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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC vs.
Revision 1.152 by root, Tue Jul 14 00:32:27 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	/* perl namespace pollution */
33	# if __linux	21	#undef VERSION
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>
42	# else
43	# error sendfile support requested but not available
44	# endif
45	#endif
46		22
47	/* used for struct dirent, AIX doesn't provide it */	23	#ifdef _WIN32
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif
51		24
52	#if __ia64	25	# define EIO_STRUCT_DIRENT Direntry_t
53	# define STACKSIZE 65536	26	# undef malloc
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	27	# undef free
55	# define STACKSIZE PTHREAD_STACK_MIN	28
		29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
56	#else	61	#else
57	# define STACKSIZE 16384
58	#endif
59		62
60	/* buffer size for various temporary buffers */	63	# include <sys/time.h>
61	#define AIO_BUFSIZE 65536	64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
62		69
63	#define dBUF \	70	#endif
64	char *aio_buf; \
65	LOCK (wrklock); \
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		71
71	enum {	72	/* perl stupidly overrides readdir and maybe others */
72	REQ_QUIT,	73	/* with thread-unsafe versions, imagine that :( */
73	REQ_OPEN, REQ_CLOSE,	74	#undef readdir
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,	75	#undef opendir
75	REQ_SENDFILE,	76	#undef closedir
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	77
77	REQ_FSYNC, REQ_FDATASYNC,	78	#define EIO_STRUCT_STAT Stat_t
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	79
79	REQ_READDIR,	80	/* use NV for 32 bit perls as it allows larger offsets */
80	REQ_LINK, REQ_SYMLINK,	81	#if IVSIZE >= 8
81	REQ_GROUP, REQ_NOP,	82	# define VAL64 IV
82	REQ_BUSY,	83	# define SvVAL64 SvIV
83	};	84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
		89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	static HV *stash;
		105	typedef SV SV8; /* byte-sv, used for argument-checking */
		106	typedef int aio_rfd; /* read file desriptor */
		107	typedef int aio_wfd; /* write file descriptor */
84		108
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		111
88	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;	113	SV *callback; \
93	SV *fh, *fh2;	114	SV *sv1, *sv2; \
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;	115	STRLEN stroffset; \
101	int type;	116	SV *self;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105		117
106	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
107	unsigned char pri;
108		119
109	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
111	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
112		151
113	enum {	152	enum {
114	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
115	};	154	};
116		155
		156	#include "libeio/eio.c"
		157
117	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
119		160
120	enum {	161	static SV *on_next_submit;
121	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;	163	static int max_outstanding;
134	static int respipe [2];
135		164
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141		166
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))	167	static void req_destroy (aio_req req);
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);	168	static void req_cancel (aio_req req);
244	static void req_free (aio_req req);	169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	char buf [4];
		180	while (respipe_read (respipe [0], buf, 4) == 4)
		181	;
		182	}
245		183
246	/* must be called at most once */	184	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
248	{	186	{
249	if (!req->self)	187	if (!req->self)
…		…
267	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	206	}
269		207
270	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
271	{	209	{
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
273	{	211	{
274	int old_len = grp->length;
275
276	if (grp->fh2 && SvOK (grp->fh2))
277	{
278	dSP;	212	dSP;
279		213
280	ENTER;	214	ENTER;
281	SAVETMPS;	215	SAVETMPS;
282	PUSHMARK (SP);	216	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
284	PUTBACK;	218	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	220	SPAGAIN;
287	FREETMPS;	221	FREETMPS;
288	LEAVE;	222	LEAVE;
289	}
290
291	/* stop if no progress has been made */
292	if (old_len == grp->length)
293	{
294	SvREFCNT_dec (grp->fh2);
295	grp->fh2 = 0;
296	break;
297	}
298	}	223	}
299	}	224	}
300		225
301	static void aio_grp_dec (aio_req grp)	226	static void req_submit (eio_req *req)
302	{	227	{
303	--grp->length;	228	eio_submit (req);
304		229
305	/* call feeder, if applicable */	230	if (expect_false (on_next_submit))
306	aio_grp_feed (grp);
307
308	/* finish, if done */
309	if (!grp->length && grp->fd)
310	{	231	{
311	req_invoke (grp);	232	dSP;
312	req_free (grp);	233	SV *cb = sv_2mortal (on_next_submit);
		234
		235	on_next_submit = 0;
		236
		237	PUSHMARK (SP);
		238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
313	}	240	}
314	}	241	}
315		242
316	static void poll_wait ()	243	static int req_invoke (eio_req *req)
317	{	244	{
318	fd_set rfd;	245	dSP;
319		246
320	while (nreqs)	247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
321	{	251	{
322	int size;
323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324	LOCK (reslock);
325	#endif
326	size = res_queue.size;
327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328	UNLOCK (reslock);
329	#endif
330
331	if (size)
332	return;
333
334	FD_ZERO(&rfd);
335	FD_SET(respipe [0], &rfd);
336
337	select (respipe [0] + 1, &rfd, 0, 0, 0);
338	}
339	}
340
341	static void req_invoke (aio_req req)
342	{
343	dSP;
344
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
346	{
347	errno = req->errorno;
348
349	ENTER;	252	ENTER;
350	SAVETMPS;	253	SAVETMPS;
351	PUSHMARK (SP);	254	PUSHMARK (SP);
352	EXTEND (SP, 1);	255	EXTEND (SP, 1);
353		256
354	switch (req->type)	257	switch (req->type)
355	{	258	{
356	case REQ_READDIR:	259	case EIO_READDIR:
357	{	260	{
358	SV *rv = &PL_sv_undef;	261	SV *rv = &PL_sv_undef;
359		262
360	if (req->result >= 0)	263	if (req->result >= 0)
361	{	264	{
362	int i;	265	int i;
363	char *buf = req->data2ptr;	266	char *names = (char *)req->ptr2;
		267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
364	AV *av = newAV ();	268	AV *av = newAV ();
365		269
366	av_extend (av, req->result - 1);	270	av_extend (av, req->result - 1);
367		271
368	for (i = 0; i < req->result; ++i)	272	for (i = 0; i < req->result; ++i)
369	{	273	{
370	SV *sv = newSVpv (buf, 0);	274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
371		277
		278	if (req->int1 & EIO_READDIR_CUSTOM2)
		279	{
		280	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		281	AV *avent = newAV ();
		282
		283	av_extend (avent, 2);
		284
		285	if (!sv_type [ent->type])
		286	{
		287	sv_type [ent->type] = newSViv (ent->type);
		288	SvREADONLY_on (sv_type [ent->type]);
		289	}
		290
		291	av_store (avent, 0, namesv);
		292	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		293	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		294
		295	av_store (av, i, newRV_noinc ((SV *)avent));
		296	}
		297	else
372	av_store (av, i, sv);	298	av_store (av, i, namesv);
		299
		300	++ent;
		301	}
		302	else
		303	{
		304	SV *name = newSVpv (names, 0);
		305	av_store (av, i, name);
373	buf += SvCUR (sv) + 1;	306	names += SvCUR (name) + 1;
		307	}
374	}	308	}
375		309
376	rv = sv_2mortal (newRV_noinc ((SV *)av));	310	rv = sv_2mortal (newRV_noinc ((SV *)av));
377	}	311	}
378		312
379	PUSHs (rv);	313	PUSHs (rv);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM1)
		316	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
380	}	317	}
381	break;	318	break;
382		319
383	case REQ_OPEN:	320	case EIO_OPEN:
384	{	321	{
385	/* convert fd to fh */	322	/* convert fd to fh */
386	SV *fh;	323	SV *fh = &PL_sv_undef;
387		324
388	PUSHs (sv_2mortal (newSViv (req->result)));	325	if (req->result >= 0)
389	PUTBACK;	326	{
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	327	GV *gv = (GV *)sv_newmortal ();
391	SPAGAIN;	328	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		329	char sym [64];
		330	int symlen;
		331
		332	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		333	gv_init (gv, stash, sym, symlen, 0);
392		334
393	fh = SvREFCNT_inc (POPs);	335	symlen = snprintf (
		336	sym,
		337	sizeof (sym),
		338	"%s&=%d",
		339	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		340	(int)req->result
		341	);
394		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
395	PUSHMARK (SP);	347	PUSHs (fh);
396	XPUSHs (sv_2mortal (fh));
397	}	348	}
398	break;	349	break;
399		350
400	case REQ_GROUP:	351	case EIO_GROUP:
401	req->fd = 2; /* mark group as finished */	352	req->int1 = 2; /* mark group as finished */
402		353
403	if (req->data)	354	if (req->sv1)
404	{	355	{
405	int i;	356	int i;
406	AV *av = (AV *)req->data;	357	AV *av = (AV *)req->sv1;
407		358
408	EXTEND (SP, AvFILL (av) + 1);	359	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	360	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	361	PUSHs (*av_fetch (av, i, 0));
411	}	362	}
412	break;	363	break;
413		364
414	case REQ_NOP:	365	case EIO_NOP:
415	case REQ_BUSY:	366	case EIO_BUSY:
416	break;	367	break;
		368
		369	case EIO_READLINK:
		370	if (req->result > 0)
		371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		372	break;
		373
		374	case EIO_STAT:
		375	case EIO_LSTAT:
		376	case EIO_FSTAT:
		377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		378	PL_laststatval = req->result;
		379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		380	PUSHs (sv_2mortal (newSViv (req->result)));
		381	break;
		382
		383	case EIO_READ:
		384	{
		385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
		391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
417		397
418	default:	398	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	399	PUSHs (sv_2mortal (newSViv (req->result)));
420	break;	400	break;
421	}	401	}
422		402
		403	errno = req->errorno;
423		404
424	PUTBACK;	405	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426	SPAGAIN;	407	SPAGAIN;
427		408
428	FREETMPS;	409	FREETMPS;
429	LEAVE;	410	LEAVE;
		411
		412	PUTBACK;
430	}	413	}
431		414
432	if (req->grp)	415	return !!SvTRUE (ERRSV);
433	{
434	aio_req grp = req->grp;
435
436	/* unlink request */
437	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
438	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
439
440	if (grp->grp_first == req)
441	grp->grp_first = req->grp_next;
442
443	aio_grp_dec (grp);
444	}
445
446	if (SvTRUE (ERRSV))
447	{
448	req_free (req);
449	croak (0);
450	}
451	}	416	}
452		417
453	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
454	{	419	{
455	if (req->self)	420	if (req->self)
456	{	421	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
459	}	424	}
460		425
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
464	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466
467	if (req->type == REQ_READDIR)
468	free (req->data2ptr);
469		429
470	Safefree (req);	430	Safefree (req);
471	}	431	}
472		432
473	static void req_cancel (aio_req req)	433	static void req_cancel_subs (aio_req grp)
474	{	434	{
475	req->flags |= FLAG_CANCELLED;	435	aio_req sub;
476		436
477	if (req->type == REQ_GROUP)	437	if (grp->type != EIO_GROUP)
		438	return;
		439
		440	SvREFCNT_dec (grp->sv2);
		441	grp->sv2 = 0;
		442
		443	eio_grp_cancel (grp);
		444	}
		445
		446	#ifdef USE_SOCKETS_AS_HANDLES
		447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
		451
		452	static void
		453	create_respipe (void)
		454	{
		455	int old_readfd = respipe [0];
		456
		457	if (respipe [1] >= 0)
		458	respipe_close (TO_SOCKET (respipe [1]));
		459
		460	#ifdef _WIN32
		461	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		462	#else
		463	if (pipe (respipe))
		464	#endif
		465	croak ("unable to initialize result pipe");
		466
		467	if (old_readfd >= 0)
478	{	468	{
479	aio_req sub;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		470	croak ("unable to initialize result pipe(2)");
480		471
481	for (sub = req->grp_first; sub; sub = sub->grp_next)	472	respipe_close (respipe [0]);
482	req_cancel (sub);	473	respipe [0] = old_readfd;
483	}	474	}
484	}
485		475
		476	#ifdef _WIN32
		477	int arg = 1;
		478	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		479	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		480	#else
		481	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		482	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		483	#endif
		484	croak ("unable to initialize result pipe(3)");
		485
		486	respipe_osf [0] = TO_SOCKET (respipe [0]);
		487	respipe_osf [1] = TO_SOCKET (respipe [1]);
		488	}
		489
		490	static void poll_wait (void)
		491	{
		492	fd_set rfd;
		493
		494	while (eio_nreqs ())
		495	{
		496	int size;
		497
		498	X_LOCK (reslock);
		499	size = res_queue.size;
		500	X_UNLOCK (reslock);
		501
		502	if (size)
		503	return;
		504
		505	etp_maybe_start_thread ();
		506
		507	FD_ZERO (&rfd);
		508	FD_SET (respipe [0], &rfd);
		509
		510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		511	}
		512	}
		513
486	static int poll_cb ()	514	static int poll_cb (void)
487	{	515	{
488	dSP;
489	int count = 0;
490	int do_croak = 0;
491	aio_req req;
492
493	for (;;)	516	for (;;)
494	{	517	{
495	LOCK (reslock);	518	int res = eio_poll ();
496	req = reqq_shift (&res_queue);
497		519
498	if (req)	520	if (res > 0)
499	{
500	if (!res_queue.size)
501	{
502	/* read any signals sent by the worker threads */
503	char buf [32];
504	while (read (respipe [0], buf, 32) == 32)
505	;
506	}
507	}
508
509	UNLOCK (reslock);
510
511	if (!req)
512	break;	521	croak (0);
513		522
514	--nreqs;	523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
515		525
516	if (req->type == REQ_QUIT)	526	poll_wait ();
517	started--;
518	else if (req->type == REQ_GROUP && req->length)
519	{
520	req->fd = 1; /* mark request as delayed */
521	continue;
522	}
523	else
524	{
525	if (req->type == REQ_READ)
526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529	SvREADONLY_off (req->data);
530
531	if (req->statdata)
532	{
533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534	PL_laststatval = req->result;
535	PL_statcache = *(req->statdata);
536	}
537
538	req_invoke (req);
539
540	count++;
541	}
542
543	req_free (req);
544	}	527	}
545
546	return count;
547	}
548
549	static void *aio_proc(void *arg);
550
551	static void start_thread (void)
552	{
553	worker *wrk = calloc (1, sizeof (worker));
554
555	if (!wrk)
556	croak ("unable to allocate worker thread data");
557
558	sigset_t fullsigset, oldsigset;
559	pthread_attr_t attr;
560
561	pthread_attr_init (&attr);
562	pthread_attr_setstacksize (&attr, STACKSIZE);
563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
564
565	sigfillset (&fullsigset);
566
567	LOCK (wrklock);
568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
569
570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
571	{
572	wrk->prev = &wrk_first;
573	wrk->next = wrk_first.next;
574	wrk_first.next->prev = wrk;
575	wrk_first.next = wrk;
576	started++;
577	}
578	else
579	free (wrk);
580
581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
582	UNLOCK (wrklock);
583	}
584
585	static void req_send (aio_req req)
586	{
587	while (started < wanted && nreqs >= started)
588	start_thread ();
589
590	++nreqs;
591
592	LOCK (reqlock);
593	reqq_push (&req_queue, req);
594	pthread_cond_signal (&reqwait);
595	UNLOCK (reqlock);
596
597	if (nreqs > max_outstanding)
598	for (;;)
599	{
600	poll_cb ();
601
602	if (nreqs <= max_outstanding)
603	break;
604
605	poll_wait ();
606	}
607	}
608
609	static void end_thread (void)
610	{
611	aio_req req;
612
613	Newz (0, req, 1, aio_cb);
614
615	req->type = REQ_QUIT;
616	req->pri = PRI_MAX + PRI_BIAS;
617
618	req_send (req);
619	}
620
621	static void min_parallel (int nthreads)
622	{
623	if (wanted < nthreads)
624	wanted = nthreads;
625	}
626
627	static void max_parallel (int nthreads)
628	{
629	int cur = started;
630
631	if (wanted > nthreads)
632	wanted = nthreads;
633
634	while (cur > wanted)
635	{
636	end_thread ();
637	cur--;
638	}
639
640	while (started > wanted)
641	{
642	poll_wait ();
643	poll_cb ();
644	}
645	}
646
647	static void create_pipe ()
648	{
649	if (pipe (respipe))
650	croak ("unable to initialize result pipe");
651
652	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
653	croak ("cannot set result pipe to nonblocking mode");
654
655	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657	}
658
659	/*****************************************************************************/
660	/* work around various missing functions */
661
662	#if !HAVE_PREADWRITE
663	# define pread aio_pread
664	# define pwrite aio_pwrite
665
666	/*
667	* make our pread/pwrite safe against themselves, but not against
668	* normal read/write by using a mutex. slows down execution a lot,
669	* but that's your problem, not mine.
670	*/
671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
672
673	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
674	{
675	ssize_t res;
676	off_t ooffset;
677
678	LOCK (preadwritelock);
679	ooffset = lseek (fd, 0, SEEK_CUR);
680	lseek (fd, offset, SEEK_SET);
681	res = read (fd, buf, count);
682	lseek (fd, ooffset, SEEK_SET);
683	UNLOCK (preadwritelock);
684
685	return res;
686	}
687
688	static ssize_t pwrite (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 = write (fd, buf, count);
697	lseek (fd, offset, SEEK_SET);
698	UNLOCK (preadwritelock);
699
700	return res;
701	}
702	#endif
703
704	#if !HAVE_FDATASYNC
705	# define fdatasync fsync
706	#endif
707
708	#if !HAVE_READAHEAD
709	# define readahead aio_readahead
710
711	static ssize_t readahead (int fd, off_t offset, size_t count)
712	{
713	dBUF;
714
715	while (count > 0)
716	{
717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
718
719	pread (fd, aio_buf, len, offset);
720	offset += len;
721	count -= len;
722	}
723
724	errno = 0;
725	}
726	#endif
727
728	#if !HAVE_READDIR_R
729	# define readdir_r aio_readdir_r
730
731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
732
733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
734	{
735	struct dirent *e;
736	int errorno;
737
738	LOCK (readdirlock);
739
740	e = readdir (dirp);
741	errorno = errno;
742
743	if (e)
744	{
745	*res = ent;
746	strcpy (ent->d_name, e->d_name);
747	}
748	else
749	*res = 0;
750
751	UNLOCK (readdirlock);
752
753	errno = errorno;
754	return e ? 0 : -1;
755	}
756	#endif
757
758	/* sendfile always needs emulation */
759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
760	{
761	ssize_t res;
762
763	if (!count)
764	return 0;
765
766	#if HAVE_SENDFILE
767	# if __linux
768	res = sendfile (ofd, ifd, &offset, count);
769
770	# elif __freebsd
771	/*
772	* Of course, the freebsd sendfile is a dire hack with no thoughts
773	* wasted on making it similar to other I/O functions.
774	*/
775	{
776	off_t sbytes;
777	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778
779	if (res < 0 && sbytes)
780	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
781	res = sbytes;
782	}
783
784	# elif __hpux
785	res = sendfile (ofd, ifd, offset, count, 0, 0);
786
787	# elif __solaris
788	{
789	struct sendfilevec vec;
790	size_t sbytes;
791
792	vec.sfv_fd = ifd;
793	vec.sfv_flag = 0;
794	vec.sfv_off = offset;
795	vec.sfv_len = count;
796
797	res = sendfilev (ofd, &vec, 1, &sbytes);
798
799	if (res < 0 && sbytes)
800	res = sbytes;
801	}
802
803	# endif
804	#else
805	res = -1;
806	errno = ENOSYS;
807	#endif
808
809	if (res < 0
810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
811	#if __solaris
812	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
813	#endif
814	)
815	)
816	{
817	/* emulate sendfile. this is a major pain in the ass */
818	dBUF;
819
820	res = 0;
821
822	while (count)
823	{
824	ssize_t cnt;
825
826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
827
828	if (cnt <= 0)
829	{
830	if (cnt && !res) res = -1;
831	break;
832	}
833
834	cnt = write (ofd, aio_buf, cnt);
835
836	if (cnt <= 0)
837	{
838	if (cnt && !res) res = -1;
839	break;
840	}
841
842	offset += cnt;
843	res += cnt;
844	count -= cnt;
845	}
846	}
847
848	return res;
849	}
850
851	/* read a full directory */
852	static void scandir_ (aio_req req, worker *self)
853	{
854	DIR *dirp;
855	union
856	{
857	struct dirent d;
858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
859	} *u;
860	struct dirent *entp;
861	char *name, *names;
862	int memlen = 4096;
863	int memofs = 0;
864	int res = 0;
865	int errorno;
866
867	LOCK (wrklock);
868	self->dirp = dirp = opendir (req->dataptr);
869	self->dbuf = u = malloc (sizeof (*u));
870	UNLOCK (wrklock);
871
872	req->data2ptr = names = malloc (memlen);
873
874	if (dirp && u && names)
875	for (;;)
876	{
877	errno = 0;
878	readdir_r (dirp, &u->d, &entp);
879
880	if (!entp)
881	break;
882
883	name = entp->d_name;
884
885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
886	{
887	int len = strlen (name) + 1;
888
889	res++;
890
891	while (memofs + len > memlen)
892	{
893	memlen *= 2;
894	LOCK (wrklock);
895	req->data2ptr = names = realloc (names, memlen);
896	UNLOCK (wrklock);
897
898	if (!names)
899	break;
900	}
901
902	memcpy (names + memofs, name, len);
903	memofs += len;
904	}
905	}
906
907	if (errno)
908	res = -1;
909
910	req->result = res;
911	}
912
913	/*****************************************************************************/
914
915	static void *aio_proc (void *thr_arg)
916	{
917	aio_req req;
918	int type;
919	worker *self = (worker *)thr_arg;
920
921	do
922	{
923	LOCK (reqlock);
924
925	for (;;)
926	{
927	self->req = req = reqq_shift (&req_queue);
928
929	if (req)
930	break;
931
932	pthread_cond_wait (&reqwait, &reqlock);
933	}
934
935	UNLOCK (reqlock);
936
937	errno = 0; /* strictly unnecessary */
938	type = req->type; /* remember type for QUIT check */
939
940	if (!(req->flags & FLAG_CANCELLED))
941	switch (type)
942	{
943	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
944	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
945
946	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
948
949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
952
953	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
954	case REQ_CLOSE: req->result = close (req->fd); break;
955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
956	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
960
961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
962	case REQ_FSYNC: req->result = fsync (req->fd); break;
963	case REQ_READDIR: scandir_ (req, self); break;
964
965	case REQ_BUSY:
966	{
967	struct timeval tv;
968
969	tv.tv_sec = req->fd;
970	tv.tv_usec = req->fd2;
971
972	req->result = select (0, 0, 0, 0, &tv);
973	}
974
975	case REQ_GROUP:
976	case REQ_NOP:
977	case REQ_QUIT:
978	break;
979
980	default:
981	req->result = ENOSYS;
982	break;
983	}
984
985	req->errorno = errno;
986
987	LOCK (reslock);
988
989	if (!reqq_push (&res_queue, req))
990	/* write a dummy byte to the pipe so fh becomes ready */
991	write (respipe [1], &respipe, 1);
992
993	self->req = 0;
994	worker_clear (self);
995
996	UNLOCK (reslock);
997	}
998	while (type != REQ_QUIT);
999
1000	LOCK (wrklock);
1001	worker_free (self);
1002	UNLOCK (wrklock);
1003
1004	return 0;
1005	}
1006
1007	/*****************************************************************************/
1008
1009	static void atfork_prepare (void)
1010	{
1011	LOCK (wrklock);
1012	LOCK (reqlock);
1013	LOCK (reslock);
1014	#if !HAVE_PREADWRITE
1015	LOCK (preadwritelock);
1016	#endif
1017	#if !HAVE_READDIR_R
1018	LOCK (readdirlock);
1019	#endif
1020	}
1021
1022	static void atfork_parent (void)
1023	{
1024	#if !HAVE_READDIR_R
1025	UNLOCK (readdirlock);
1026	#endif
1027	#if !HAVE_PREADWRITE
1028	UNLOCK (preadwritelock);
1029	#endif
1030	UNLOCK (reslock);
1031	UNLOCK (reqlock);
1032	UNLOCK (wrklock);
1033	}	528	}
1034		529
1035	static void atfork_child (void)	530	static void atfork_child (void)
1036	{	531	{
1037	aio_req prv;
1038
1039	while (prv = reqq_shift (&req_queue))
1040	req_free (prv);
1041
1042	while (prv = reqq_shift (&res_queue))
1043	req_free (prv);
1044
1045	while (wrk_first.next != &wrk_first)
1046	{
1047	worker *wrk = wrk_first.next;
1048
1049	if (wrk->req)
1050	req_free (wrk->req);
1051
1052	worker_clear (wrk);
1053	worker_free (wrk);
1054	}
1055
1056	started = 0;
1057	nreqs = 0;
1058
1059	close (respipe [0]);
1060	close (respipe [1]);
1061	create_pipe ();	532	create_respipe ();
		533	}
1062		534
1063	atfork_parent ();	535	static SV *
		536	get_cb (SV *cb_sv)
		537	{
		538	SvGETMAGIC (cb_sv);
		539	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1064	}	540	}
1065		541
1066	#define dREQ \	542	#define dREQ \
		543	SV *cb_cv; \
1067	aio_req req; \	544	aio_req req; \
1068	int req_pri = next_pri; \	545	int req_pri = next_pri; \
1069	next_pri = DEFAULT_PRI + PRI_BIAS; \	546	next_pri = EIO_PRI_DEFAULT; \
1070	\	547	\
1071	if (SvOK (callback) && !SvROK (callback)) \	548	cb_cv = get_cb (callback); \
1072	croak ("callback must be undef or of reference type"); \
1073	\	549	\
1074	Newz (0, req, 1, aio_cb); \	550	Newz (0, req, 1, eio_req); \
1075	if (!req) \	551	if (!req) \
1076	croak ("out of memory during aio_req allocation"); \	552	croak ("out of memory during eio_req allocation"); \
1077	\	553	\
1078	req->callback = newSVsv (callback); \	554	req->callback = SvREFCNT_inc (cb_cv); \
1079	req->pri = req_pri	555	req->pri = req_pri
1080		556
1081	#define REQ_SEND \	557	#define REQ_SEND \
		558	PUTBACK; \
1082	req_send (req); \	559	req_submit (req); \
		560	SPAGAIN; \
1083	\	561	\
1084	if (GIMME_V != G_VOID) \	562	if (GIMME_V != G_VOID) \
1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));	563	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1086		564
1087	MODULE = IO::AIO PACKAGE = IO::AIO	565	MODULE = IO::AIO PACKAGE = IO::AIO
1088		566
1089	PROTOTYPES: ENABLE	567	PROTOTYPES: ENABLE
1090		568
1091	BOOT:	569	BOOT:
1092	{	570	{
		571	static const struct {
		572	const char *name;
		573	IV iv;
		574	} *civ, const_iv[] = {
		575	# define const_iv(name, value) { # name, (IV) value },
		576	# define const_eio(name) { # name, (IV) EIO_ ## name },
		577	const_iv (EXDEV , EXDEV)
		578	const_iv (ENOSYS , ENOSYS)
		579	const_iv (O_RDONLY, O_RDONLY)
		580	const_iv (O_WRONLY, O_WRONLY)
		581	const_iv (O_CREAT , O_CREAT)
		582	const_iv (O_TRUNC , O_TRUNC)
		583	#ifndef _WIN32
		584	const_iv (S_IFIFO , S_IFIFO)
		585	#endif
		586	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		587	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		588	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		589	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		590	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		591	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		592
		593	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		594	const_eio (SYNC_FILE_RANGE_WRITE)
		595	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		596
		597	const_eio (READDIR_DENTS)
		598	const_eio (READDIR_DIRS_FIRST)
		599	const_eio (READDIR_STAT_ORDER)
		600	const_eio (READDIR_FOUND_UNKNOWN)
		601
		602	const_eio (DT_UNKNOWN)
		603	const_eio (DT_FIFO)
		604	const_eio (DT_CHR)
		605	const_eio (DT_DIR)
		606	const_eio (DT_BLK)
		607	const_eio (DT_REG)
		608	const_eio (DT_LNK)
		609	const_eio (DT_SOCK)
		610	const_eio (DT_WHT)
		611	};
		612
1093	HV *stash = gv_stashpv ("IO::AIO", 1);	613	stash = gv_stashpv ("IO::AIO", 1);
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1097		614
		615	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		616	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		617
1098	create_pipe ();	618	create_respipe ();
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100	}
1101		619
		620	if (eio_init (want_poll, done_poll) < 0)
		621	croak ("IO::AIO: unable to initialise eio library");
		622
		623	/* atfork child called in fifo order, so before eio's handler */
		624	X_THREAD_ATFORK (0, 0, atfork_child);
		625	}
		626
1102	void	627	void
1103	min_parallel (nthreads)	628	max_poll_reqs (int nreqs)
1104	int nthreads
1105	PROTOTYPE: $	629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_poll_reqs (nreqs);
1106		632
1107	void	633	void
1108	max_parallel (nthreads)	634	max_poll_time (double nseconds)
1109	int nthreads
1110	PROTOTYPE: $	635	PROTOTYPE: $
1111
1112	int
1113	max_outstanding (nreqs)
1114	int nreqs
1115	PROTOTYPE: $
1116	CODE:	636	CODE:
1117	RETVAL = max_outstanding;	637	eio_set_max_poll_time (nseconds);
		638
		639	void
		640	min_parallel (int nthreads)
		641	PROTOTYPE: $
		642	CODE:
		643	eio_set_min_parallel (nthreads);
		644
		645	void
		646	max_parallel (int nthreads)
		647	PROTOTYPE: $
		648	CODE:
		649	eio_set_max_parallel (nthreads);
		650
		651	void
		652	max_idle (int nthreads)
		653	PROTOTYPE: $
		654	CODE:
		655	eio_set_max_idle (nthreads);
		656
		657	void
		658	max_outstanding (int maxreqs)
		659	PROTOTYPE: $
		660	CODE:
1118	max_outstanding = nreqs;	661	max_outstanding = maxreqs;
1119		662
1120	void	663	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	664	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1122	SV * pathname
1123	int flags
1124	int mode
1125	SV * callback
1126	PROTOTYPE: $$$;$	665	PROTOTYPE: $$$;$
1127	PPCODE:	666	PPCODE:
1128	{	667	{
1129	dREQ;	668	dREQ;
1130		669
1131	req->type = REQ_OPEN;	670	req->type = EIO_OPEN;
1132	req->data = newSVsv (pathname);	671	req->sv1 = newSVsv (pathname);
1133	req->dataptr = SvPVbyte_nolen (req->data);	672	req->ptr1 = SvPVbyte_nolen (req->sv1);
1134	req->fd = flags;	673	req->int1 = flags;
1135	req->mode = mode;	674	req->int2 = mode;
1136		675
1137	REQ_SEND;	676	REQ_SEND;
1138	}	677	}
1139		678
1140	void	679	void
1141	aio_close (fh,callback=&PL_sv_undef)	680	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	SV * callback
1144	PROTOTYPE: $;$	681	PROTOTYPE: $;$
1145	ALIAS:	682	ALIAS:
1146	aio_close = REQ_CLOSE
1147	aio_fsync = REQ_FSYNC	683	aio_fsync = EIO_FSYNC
1148	aio_fdatasync = REQ_FDATASYNC	684	aio_fdatasync = EIO_FDATASYNC
1149	PPCODE:	685	PPCODE:
1150	{	686	{
		687	int fd = s_fileno_croak (fh, 0);
1151	dREQ;	688	dREQ;
1152		689
1153	req->type = ix;	690	req->type = ix;
1154	req->fh = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = fd;
1156		693
1157	REQ_SEND (req);	694	REQ_SEND (req);
1158	}	695	}
1159		696
1160	void	697	void
		698	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $$$$;$
		700	PPCODE:
		701	{
		702	int fd = s_fileno_croak (fh, 0);
		703	dREQ;
		704
		705	req->type = EIO_SYNC_FILE_RANGE;
		706	req->sv1 = newSVsv (fh);
		707	req->int1 = fd;
		708	req->offs = offset;
		709	req->size = nbytes;
		710	req->int2 = flags;
		711
		712	REQ_SEND (req);
		713	}
		714
		715	void
		716	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		717	PROTOTYPE: $;$
		718	PPCODE:
		719	{
		720	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		721	int fd = s_fileno_croak (fh, 0);
		722	dREQ;
		723
		724	if (close_pipe < 0)
		725	{
		726	int pipefd [2];
		727
		728	if (pipe (pipefd) < 0
		729	|| close (pipefd [1]) < 0
		730	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		731	abort (); /*D*/
		732
		733	close_pipe = pipefd [0];
		734	}
		735
		736	req->type = EIO_DUP2;
		737	req->int1 = close_pipe;
		738	req->sv2 = newSVsv (fh);
		739	req->int2 = fd;
		740
		741	REQ_SEND (req);
		742	}
		743
		744	void
1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	745	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1162	SV * fh
1163	UV offset
1164	UV length
1165	SV * data
1166	UV dataoffset
1167	SV * callback
1168	ALIAS:	746	ALIAS:
1169	aio_read = REQ_READ	747	aio_read = EIO_READ
1170	aio_write = REQ_WRITE	748	aio_write = EIO_WRITE
1171	PROTOTYPE: $$$$$;$	749	PROTOTYPE: $$$$$;$
1172	PPCODE:	750	PPCODE:
1173	{	751	{
1174	aio_req req;
1175	STRLEN svlen;	752	STRLEN svlen;
		753	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1176	char *svptr = SvPVbyte (data, svlen);	754	char *svptr = SvPVbyte (data, svlen);
1177		755	UV len = SvUV (length);
1178	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);
1180		756
1181	if (dataoffset < 0)	757	if (dataoffset < 0)
1182	dataoffset += svlen;	758	dataoffset += svlen;
1183		759
1184	if (dataoffset < 0 || dataoffset > svlen)	760	if (dataoffset < 0 || dataoffset > svlen)
1185	croak ("data offset outside of string");	761	croak ("dataoffset outside of data scalar");
1186		762
1187	if (ix == REQ_WRITE)	763	if (ix == EIO_WRITE)
1188	{	764	{
1189	/* write: check length and adjust. */	765	/* write: check length and adjust. */
1190	if (length < 0 || length + dataoffset > svlen)	766	if (!SvOK (length) || len + dataoffset > svlen)
1191	length = svlen - dataoffset;	767	len = svlen - dataoffset;
1192	}	768	}
1193	else	769	else
1194	{	770	{
1195	/* read: grow scalar as necessary */	771	/* read: check type and grow scalar as necessary */
		772	SvUPGRADE (data, SVt_PV);
1196	svptr = SvGROW (data, length + dataoffset);	773	svptr = SvGROW (data, len + dataoffset + 1);
1197	}	774	}
1198
1199	if (length < 0)
1200	croak ("length must not be negative");
1201		775
1202	{	776	{
1203	dREQ;	777	dREQ;
1204		778
1205	req->type = ix;	779	req->type = ix;
1206	req->fh = newSVsv (fh);	780	req->sv1 = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	781	req->int1 = fd;
1208	: IoOFP (sv_2io (fh)));	782	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209	req->offset = offset;	783	req->size = len;
1210	req->length = length;
1211	req->data = SvREFCNT_inc (data);	784	req->sv2 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	785	req->ptr2 = (char *)svptr + dataoffset;
		786	req->stroffset = dataoffset;
1213		787
1214	if (!SvREADONLY (data))	788	if (!SvREADONLY (data))
1215	{	789	{
1216	SvREADONLY_on (data);	790	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	791	req->flags |= FLAG_SV2_RO_OFF;
1218	}	792	}
1219		793
1220	REQ_SEND;	794	REQ_SEND;
1221	}	795	}
1222	}	796	}
1223		797
1224	void	798	void
		799	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		800	PROTOTYPE: $$;$
		801	PPCODE:
		802	{
		803	SV *data;
		804	dREQ;
		805
		806	req->type = EIO_READLINK;
		807	req->sv1 = newSVsv (path);
		808	req->ptr1 = SvPVbyte_nolen (req->sv1);
		809
		810	REQ_SEND;
		811	}
		812
		813	void
1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	814	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1226	SV * out_fh
1227	SV * in_fh
1228	UV in_offset
1229	UV length
1230	SV * callback
1231	PROTOTYPE: $$$$;$	815	PROTOTYPE: $$$$;$
1232	PPCODE:	816	PPCODE:
1233	{	817	{
		818	int ifd = s_fileno_croak (in_fh , 0);
		819	int ofd = s_fileno_croak (out_fh, 1);
1234	dREQ;	820	dREQ;
1235		821
1236	req->type = REQ_SENDFILE;	822	req->type = EIO_SENDFILE;
1237	req->fh = newSVsv (out_fh);	823	req->sv1 = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	824	req->int1 = ofd;
1239	req->fh2 = newSVsv (in_fh);	825	req->sv2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	826	req->int2 = ifd;
1241	req->offset = in_offset;	827	req->offs = in_offset;
1242	req->length = length;	828	req->size = length;
1243		829
1244	REQ_SEND;	830	REQ_SEND;
1245	}	831	}
1246		832
1247	void	833	void
1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	834	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1249	SV * fh
1250	UV offset
1251	IV length
1252	SV * callback
1253	PROTOTYPE: $$$;$	835	PROTOTYPE: $$$;$
1254	PPCODE:	836	PPCODE:
1255	{	837	{
		838	int fd = s_fileno_croak (fh, 0);
1256	dREQ;	839	dREQ;
1257		840
1258	req->type = REQ_READAHEAD;	841	req->type = EIO_READAHEAD;
1259	req->fh = newSVsv (fh);	842	req->sv1 = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	843	req->int1 = fd;
1261	req->offset = offset;	844	req->offs = offset;
1262	req->length = length;	845	req->size = length;
1263		846
1264	REQ_SEND;	847	REQ_SEND;
1265	}	848	}
1266		849
1267	void	850	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)	851	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1269	SV * fh_or_path
1270	SV * callback
1271	ALIAS:	852	ALIAS:
1272	aio_stat = REQ_STAT	853	aio_stat = EIO_STAT
1273	aio_lstat = REQ_LSTAT	854	aio_lstat = EIO_LSTAT
1274	PPCODE:	855	PPCODE:
1275	{	856	{
1276	dREQ;	857	dREQ;
1277		858
1278	New (0, req->statdata, 1, Stat_t);	859	req->sv1 = newSVsv (fh_or_path);
1279	if (!req->statdata)
1280	{
1281	req_free (req);
1282	croak ("out of memory during aio_req->statdata allocation");
1283	}
1284		860
1285	if (SvPOK (fh_or_path))	861	if (SvPOK (req->sv1))
1286	{	862	{
1287	req->type = ix;	863	req->type = ix;
1288	req->data = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);	864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1290	}	865	}
1291	else	866	else
1292	{	867	{
1293	req->type = REQ_FSTAT;	868	req->type = EIO_FSTAT;
1294	req->fh = newSVsv (fh_or_path);
1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	869	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1296	}	870	}
1297		871
1298	REQ_SEND;	872	REQ_SEND;
1299	}	873	}
1300		874
1301	void	875	void
		876	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		877	PPCODE:
		878	{
		879	dREQ;
		880
		881	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		882	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		883	req->sv1 = newSVsv (fh_or_path);
		884
		885	if (SvPOK (req->sv1))
		886	{
		887	req->type = EIO_UTIME;
		888	req->ptr1 = SvPVbyte_nolen (req->sv1);
		889	}
		890	else
		891	{
		892	req->type = EIO_FUTIME;
		893	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		894	}
		895
		896	REQ_SEND;
		897	}
		898
		899	void
		900	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		901	PPCODE:
		902	{
		903	dREQ;
		904
		905	req->sv1 = newSVsv (fh_or_path);
		906	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		907
		908	if (SvPOK (req->sv1))
		909	{
		910	req->type = EIO_TRUNCATE;
		911	req->ptr1 = SvPVbyte_nolen (req->sv1);
		912	}
		913	else
		914	{
		915	req->type = EIO_FTRUNCATE;
		916	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		917	}
		918
		919	REQ_SEND;
		920	}
		921
		922	void
		923	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		924	ALIAS:
		925	aio_chmod = EIO_CHMOD
		926	aio_mkdir = EIO_MKDIR
		927	PPCODE:
		928	{
		929	dREQ;
		930
		931	req->int2 = mode;
		932	req->sv1 = newSVsv (fh_or_path);
		933
		934	if (SvPOK (req->sv1))
		935	{
		936	req->type = ix;
		937	req->ptr1 = SvPVbyte_nolen (req->sv1);
		938	}
		939	else
		940	{
		941	req->type = EIO_FCHMOD;
		942	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		943	}
		944
		945	REQ_SEND;
		946	}
		947
		948	void
		949	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		950	PPCODE:
		951	{
		952	dREQ;
		953
		954	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		955	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		956	req->sv1 = newSVsv (fh_or_path);
		957
		958	if (SvPOK (req->sv1))
		959	{
		960	req->type = EIO_CHOWN;
		961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962	}
		963	else
		964	{
		965	req->type = EIO_FCHOWN;
		966	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		967	}
		968
		969	REQ_SEND;
		970	}
		971
		972	void
		973	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		974	PPCODE:
		975	{
		976	dREQ;
		977
		978	req->type = EIO_READDIR;
		979	req->sv1 = newSVsv (pathname);
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		982
		983	if (flags & EIO_READDIR_DENTS)
		984	req->int1 |= EIO_READDIR_CUSTOM2;
		985
		986	REQ_SEND;
		987	}
		988
		989	void
1302	aio_unlink (pathname,callback=&PL_sv_undef)	990	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1303	SV * pathname
1304	SV * callback
1305	ALIAS:	991	ALIAS:
1306	aio_unlink = REQ_UNLINK	992	aio_unlink = EIO_UNLINK
1307	aio_rmdir = REQ_RMDIR	993	aio_rmdir = EIO_RMDIR
1308	aio_readdir = REQ_READDIR	994	aio_readdir = EIO_READDIR
1309	PPCODE:	995	PPCODE:
1310	{	996	{
1311	dREQ;	997	dREQ;
1312		998
1313	req->type = ix;	999	req->type = ix;
1314	req->data = newSVsv (pathname);	1000	req->sv1 = newSVsv (pathname);
1315	req->dataptr = SvPVbyte_nolen (req->data);	1001	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1002
		1003	REQ_SEND;
		1004	}
		1005
		1006	void
		1007	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1008	ALIAS:
		1009	aio_link = EIO_LINK
		1010	aio_symlink = EIO_SYMLINK
		1011	aio_rename = EIO_RENAME
		1012	PPCODE:
		1013	{
		1014	dREQ;
		1015
		1016	req->type = ix;
		1017	req->sv1 = newSVsv (oldpath);
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	req->sv2 = newSVsv (newpath);
		1020	req->ptr2 = SvPVbyte_nolen (req->sv2);
1316		1021
1317	REQ_SEND;	1022	REQ_SEND;
1318	}	1023	}
1319		1024
1320	void	1025	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1322	SV * oldpath
1323	SV * newpath
1324	SV * callback
1325	ALIAS:
1326	aio_link = REQ_LINK
1327	aio_symlink = REQ_SYMLINK
1328	aio_rename = REQ_RENAME
1329	PPCODE:	1027	PPCODE:
1330	{	1028	{
1331	dREQ;	1029	dREQ;
1332		1030
1333	req->type = ix;	1031	req->type = EIO_MKNOD;
1334	req->fh = newSVsv (oldpath);	1032	req->sv1 = newSVsv (pathname);
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1033	req->ptr1 = SvPVbyte_nolen (req->sv1);
1336	req->data = newSVsv (newpath);	1034	req->int2 = (mode_t)mode;
1337	req->dataptr = SvPVbyte_nolen (req->data);	1035	req->offs = dev;
1338		1036
1339	REQ_SEND;	1037	REQ_SEND;
1340	}	1038	}
1341		1039
1342	void	1040	void
1343	aio_busy (delay,callback=&PL_sv_undef)	1041	aio_busy (double delay, SV *callback=&PL_sv_undef)
1344	double delay
1345	SV * callback
1346	PPCODE:	1042	PPCODE:
1347	{	1043	{
1348	dREQ;	1044	dREQ;
1349		1045
1350	req->type = REQ_BUSY;	1046	req->type = EIO_BUSY;
1351	req->fd = delay < 0. ? 0 : delay;	1047	req->nv1 = delay < 0. ? 0. : delay;
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1353		1048
1354	REQ_SEND;	1049	REQ_SEND;
1355	}	1050	}
1356		1051
1357	void	1052	void
1358	aio_group (callback=&PL_sv_undef)	1053	aio_group (SV *callback=&PL_sv_undef)
1359	SV * callback
1360	PROTOTYPE: ;$	1054	PROTOTYPE: ;$
1361	PPCODE:	1055	PPCODE:
1362	{	1056	{
1363	dREQ;	1057	dREQ;
1364		1058
1365	req->type = REQ_GROUP;	1059	req->type = EIO_GROUP;
		1060
1366	req_send (req);	1061	req_submit (req);
1367
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1062	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1369	}	1063	}
1370		1064
1371	void	1065	void
1372	aio_nop (callback=&PL_sv_undef)	1066	aio_nop (SV *callback=&PL_sv_undef)
1373	SV * callback	1067	ALIAS:
		1068	aio_nop = EIO_NOP
		1069	aio_sync = EIO_SYNC
1374	PPCODE:	1070	PPCODE:
1375	{	1071	{
1376	dREQ;	1072	dREQ;
1377		1073
1378	req->type = REQ_NOP;	1074	req->type = ix;
1379		1075
1380	REQ_SEND;	1076	REQ_SEND;
1381	}	1077	}
1382		1078
1383	void	1079	int
1384	aioreq_pri (int pri = DEFAULT_PRI)	1080	aioreq_pri (int pri = 0)
1385	CODE:	1081	PROTOTYPE: ;$
		1082	CODE:
		1083	RETVAL = next_pri;
		1084	if (items > 0)
		1085	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1086	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1087	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1088	next_pri = pri;
		1089	}
		1090	OUTPUT:
		1091	RETVAL
1389		1092
1390	void	1093	void
1391	aioreq_nice (int nice = 0)	1094	aioreq_nice (int nice = 0)
1392	CODE:	1095	CODE:
1393	nice = next_pri - nice;	1096	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1097	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1098	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1099	next_pri = nice;
1397		1100
1398	void	1101	void
1399	flush ()	1102	flush ()
1400	PROTOTYPE:	1103	PROTOTYPE:
1401	CODE:	1104	CODE:
1402	while (nreqs)	1105	while (eio_nreqs ())
1403	{	1106	{
1404	poll_wait ();	1107	poll_wait ();
1405	poll_cb ();	1108	poll_cb ();
1406	}	1109	}
1407		1110
1408	void	1111	int
1409	poll()	1112	poll()
1410	PROTOTYPE:	1113	PROTOTYPE:
1411	CODE:	1114	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();	1115	poll_wait ();
1415	poll_cb ();	1116	RETVAL = poll_cb ();
1416	}	1117	OUTPUT:
		1118	RETVAL
1417		1119
1418	int	1120	int
1419	poll_fileno()	1121	poll_fileno()
1420	PROTOTYPE:	1122	PROTOTYPE:
1421	CODE:	1123	CODE:
…		…
1433		1135
1434	void	1136	void
1435	poll_wait()	1137	poll_wait()
1436	PROTOTYPE:	1138	PROTOTYPE:
1437	CODE:	1139	CODE:
1438	if (nreqs)
1439	poll_wait ();	1140	poll_wait ();
1440		1141
1441	int	1142	int
1442	nreqs()	1143	nreqs()
1443	PROTOTYPE:	1144	PROTOTYPE:
1444	CODE:	1145	CODE:
1445	RETVAL = nreqs;	1146	RETVAL = eio_nreqs ();
1446	OUTPUT:	1147	OUTPUT:
1447	RETVAL	1148	RETVAL
1448		1149
		1150	int
		1151	nready()
		1152	PROTOTYPE:
		1153	CODE:
		1154	RETVAL = eio_nready ();
		1155	OUTPUT:
		1156	RETVAL
		1157
		1158	int
		1159	npending()
		1160	PROTOTYPE:
		1161	CODE:
		1162	RETVAL = eio_npending ();
		1163	OUTPUT:
		1164	RETVAL
		1165
		1166	int
		1167	nthreads()
		1168	PROTOTYPE:
		1169	CODE:
		1170	RETVAL = eio_nthreads ();
		1171	OUTPUT:
		1172	RETVAL
		1173
		1174	int
		1175	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1176	PROTOTYPE: $$$$
		1177	CODE:
		1178	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1179	RETVAL = posix_fadvise (fh, offset, length, advice);
		1180	#else
		1181	RETVAL = errno = ENOSYS;
		1182	#endif
		1183	OUTPUT:
		1184	RETVAL
		1185
		1186	ssize_t
		1187	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1188	PROTOTYPE: $$$$
		1189	CODE:
		1190	eio_sendfile_sync (ofh, ifh, offset, count);
		1191
		1192	void _on_next_submit (SV *cb)
		1193	CODE:
		1194	SvREFCNT_dec (on_next_submit);
		1195	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1196
1449	PROTOTYPES: DISABLE	1197	PROTOTYPES: DISABLE
1450		1198
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1199	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		1200
1453	void	1201	void
1454	cancel (aio_req_ornot req)	1202	cancel (aio_req_ornot req)
1455	CODE:	1203	CODE:
1456	req_cancel (req);	1204	eio_cancel (req);
1457		1205
1458	void	1206	void
1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1207	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1460	CODE:	1208	PPCODE:
		1209	{
		1210	if (GIMME_V != G_VOID)
		1211	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1212
		1213	if (items > 1)
		1214	{
		1215	SV *cb_cv =get_cb (callback);
		1216
1461	SvREFCNT_dec (req->callback);	1217	SvREFCNT_dec (req->callback);
1462	req->callback = newSVsv (callback);	1218	req->callback = SvREFCNT_inc (cb_cv);
		1219	}
		1220	}
1463		1221
1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1222	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1465		1223
1466	void	1224	void
1467	add (aio_req grp, ...)	1225	add (aio_req grp, ...)
1468	PPCODE:	1226	PPCODE:
1469	{	1227	{
1470	int i;	1228	int i;
1471	aio_req req;
1472		1229
1473	if (grp->fd == 2)	1230	if (grp->int1 == 2)
1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1231	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1475		1232
1476	for (i = 1; i < items; ++i )	1233	for (i = 1; i < items; ++i )
1477	{	1234	{
		1235	aio_req req;
		1236
1478	if (GIMME_V != G_VOID)	1237	if (GIMME_V != G_VOID)
1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1238	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1480		1239
1481	req = SvAIO_REQ (ST (i));	1240	req = SvAIO_REQ (ST (i));
1482		1241
1483	if (req)	1242	if (req)
1484	{	1243	eio_grp_add (grp, req);
1485	++grp->length;
1486	req->grp = grp;
1487
1488	req->grp_prev = 0;
1489	req->grp_next = grp->grp_first;
1490
1491	if (grp->grp_first)
1492	grp->grp_first->grp_prev = req;
1493
1494	grp->grp_first = req;
1495	}	1244	}
1496	}
1497	}	1245	}
		1246
		1247	void
		1248	cancel_subs (aio_req_ornot req)
		1249	CODE:
		1250	req_cancel_subs (req);
1498		1251
1499	void	1252	void
1500	result (aio_req grp, ...)	1253	result (aio_req grp, ...)
1501	CODE:	1254	CODE:
1502	{	1255	{
1503	int i;	1256	int i;
		1257	AV *av;
		1258
		1259	grp->errorno = errno;
		1260
1504	AV *av = newAV ();	1261	av = newAV ();
		1262	av_extend (av, items - 1);
1505		1263
1506	for (i = 1; i < items; ++i )	1264	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	1265	av_push (av, newSVsv (ST (i)));
1508		1266
1509	SvREFCNT_dec (grp->data);	1267	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	1268	grp->sv1 = (SV *)av;
1511	}	1269	}
		1270
		1271	void
		1272	errno (aio_req grp, int errorno = errno)
		1273	CODE:
		1274	grp->errorno = errorno;
1512		1275
1513	void	1276	void
1514	limit (aio_req grp, int limit)	1277	limit (aio_req grp, int limit)
1515	CODE:	1278	CODE:
1516	grp->fd2 = limit;	1279	eio_grp_limit (grp, limit);
1517	aio_grp_feed (grp);
1518		1280
1519	void	1281	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	1282	feed (aio_req grp, SV *callback=&PL_sv_undef)
1521	CODE:	1283	CODE:
1522	{	1284	{
1523	SvREFCNT_dec (grp->fh2);	1285	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	1286	grp->sv2 = newSVsv (callback);
		1287	grp->feed = aio_grp_feed;
1525		1288
1526	if (grp->fd2 <= 0)	1289	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	1290	grp->int2 = 2;
1528		1291
1529	aio_grp_feed (grp);	1292	eio_grp_limit (grp, grp->int2);
1530	}	1293	}
1531		1294

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