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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 1.151 by root, Tue Jul 14 00:13:36 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"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	/* perl namespace pollution */
34	# if __linux	21	#undef VERSION
35	# include <sys/sendfile.h>	22
36	# elif __freebsd	23	#ifdef _WIN32
37	# include <sys/socket.h>	24
38	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	26	# undef malloc
40	# include <sys/socket.h>	27	# undef free
41	# elif __solaris /* not yet */	28
42	# include <sys/sendfile.h>	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
43	# else	61	#else
44	# error sendfile support requested but not available	62
45	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
46	#endif	70	#endif
47		71
48	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
49	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
50	# define NAME_MAX 4096	74	#undef readdir
		75	#undef opendir
		76	#undef closedir
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
51	#endif	89	#endif
52		90
53	#ifndef PTHREAD_STACK_MIN	91	/*****************************************************************************/
54	/* care for broken platforms, e.g. windows */	92
55	# define PTHREAD_STACK_MIN 16384	93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
56	#endif	97	#endif
57		98
58	#if __ia64	99	#define expect_false(expr) expect ((expr) != 0, 0)
59	# define STACKSIZE 65536	100	#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		101
66	/* buffer size for various temporary buffers */	102	/*****************************************************************************/
67	#define AIO_BUFSIZE 65536
68		103
69	#define dBUF \	104	static HV *stash;
70	char *aio_buf; \	105	typedef SV SV8; /* byte-sv, used for argument-checking */
71	LOCK (wrklock); \	106	typedef int aio_rfd; /* read file desriptor */
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	107	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		108
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
93		111
94	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
95	{
96	struct aio_cb *volatile next;
97
98	SV *data, *callback;	113	SV *callback; \
99	SV *fh, *fh2;	114	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;	115	STRLEN stroffset; \
107	int type;	116	SV *self;
108	int fd, fd2;
109	int errorno;
110	mode_t mode; /* open */
111		117
112	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
113	unsigned char pri;
114		119
115	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
117	} 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)
118		151
119	enum {	152	enum {
120	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121	};	154	};
122		155
		156	#include "libeio/eio.c"
		157
123	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
125		160
126	enum {	161	static SV *on_next_submit;
127	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	163	static int max_outstanding;
129		164
130	DEFAULT_PRI = 0,	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		166
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);	167	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	168	static void req_cancel (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	}
252		183
253	/* must be called at most once */	184	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
255	{	186	{
256	if (!req->self)	187	if (!req->self)
…		…
274	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	206	}
276		207
277	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
278	{	209	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
280	{	211	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	212	dSP;
286		213
287	ENTER;	214	ENTER;
288	SAVETMPS;	215	SAVETMPS;
289	PUSHMARK (SP);	216	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
291	PUTBACK;	218	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	220	SPAGAIN;
294	FREETMPS;	221	FREETMPS;
295	LEAVE;	222	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	}	223	}
306	}	224	}
307		225
308	static void aio_grp_dec (aio_req grp)	226	static void req_submit (eio_req *req)
309	{	227	{
310	--grp->length;	228	eio_submit (req);
311		229
312	/* call feeder, if applicable */	230	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	231	{
318	req_invoke (grp);	232	dSP;
319	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);
320	}	240	}
321	}	241	}
322		242
323	static void poll_wait ()	243	static int req_invoke (eio_req *req)
324	{	244	{
325	fd_set rfd;	245	dSP;
326		246
327	while (nreqs)	247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
328	{	251	{
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;	252	ENTER;
357	SAVETMPS;	253	SAVETMPS;
358	PUSHMARK (SP);	254	PUSHMARK (SP);
359	EXTEND (SP, 1);	255	EXTEND (SP, 1);
360		256
361	switch (req->type)	257	switch (req->type)
362	{	258	{
363	case REQ_READDIR:	259	case EIO_READDIR:
364	{	260	{
365	SV *rv = &PL_sv_undef;	261	SV *rv = &PL_sv_undef;
366		262
367	if (req->result >= 0)	263	if (req->result >= 0)
368	{	264	{
369	int i;	265	int i;
370	char *buf = req->data2ptr;	266	char *names = (char *)req->ptr2;
		267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	268	AV *av = newAV ();
372		269
373	av_extend (av, req->result - 1);	270	av_extend (av, req->result - 1);
374		271
375	for (i = 0; i < req->result; ++i)	272	for (i = 0; i < req->result; ++i)
376	{	273	{
377	SV *sv = newSVpv (buf, 0);	274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		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
379	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);
380	buf += SvCUR (sv) + 1;	306	names += SvCUR (name) + 1;
		307	}
381	}	308	}
382		309
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	310	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	311	}
385		312
386	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))));
387	}	317	}
388	break;	318	break;
389		319
390	case REQ_OPEN:	320	case EIO_OPEN:
391	{	321	{
392	/* convert fd to fh */	322	/* convert fd to fh */
393	SV *fh;	323	SV *fh = &PL_sv_undef;
394		324
395	PUSHs (sv_2mortal (newSViv (req->result)));	325	if (req->result >= 0)
396	PUTBACK;	326	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	327	GV *gv = (GV *)sv_newmortal ();
398	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);
399		334
400	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	);
401		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
402	PUSHMARK (SP);	347	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	348	}
405	break;	349	break;
406		350
407	case REQ_GROUP:	351	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	352	req->int1 = 2; /* mark group as finished */
409		353
410	if (req->data)	354	if (req->sv1)
411	{	355	{
412	int i;	356	int i;
413	AV *av = (AV *)req->data;	357	AV *av = (AV *)req->sv1;
414		358
415	EXTEND (SP, AvFILL (av) + 1);	359	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	360	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	361	PUSHs (*av_fetch (av, i, 0));
418	}	362	}
419	break;	363	break;
420		364
421	case REQ_NOP:	365	case EIO_NOP:
422	case REQ_BUSY:	366	case EIO_BUSY:
423	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 */
424		397
425	default:	398	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	399	PUSHs (sv_2mortal (newSViv (req->result)));
427	break;	400	break;
428	}	401	}
429		402
		403	errno = req->errorno;
430		404
431	PUTBACK;	405	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	407	SPAGAIN;
434		408
435	FREETMPS;	409	FREETMPS;
436	LEAVE;	410	LEAVE;
		411
		412	PUTBACK;
437	}	413	}
438		414
439	if (req->grp)	415	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	}	416	}
459		417
460	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
461	{	419	{
462	if (req->self)	420	if (req->self)
463	{	421	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
466	}	424	}
467		425
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476		429
477	Safefree (req);	430	Safefree (req);
478	}	431	}
479		432
480	static void req_cancel_subs (aio_req grp)	433	static void req_cancel_subs (aio_req grp)
481	{	434	{
482	aio_req sub;	435	aio_req sub;
483		436
484	if (grp->type != REQ_GROUP)	437	if (grp->type != EIO_GROUP)
485	return;	438	return;
486		439
487	SvREFCNT_dec (grp->fh2);	440	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	441	grp->sv2 = 0;
489		442
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	443	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	444	}
493		445
494	static void req_cancel (aio_req req)	446	#ifdef USE_SOCKETS_AS_HANDLES
495	{	447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
496	req->flags |= FLAG_CANCELLED;	448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
497		451
498	req_cancel_subs (req);	452	static void
499	}	453	create_respipe (void)
500
501	static int poll_cb (int max)
502	{	454	{
503	dSP;	455	int old_readfd = respipe [0];
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507		456
508	while (max <= 0 || count < max)	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)
509	{	468	{
510	LOCK (reslock);	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
511	req = reqq_shift (&res_queue);	470	croak ("unable to initialize result pipe(2)");
512		471
513	if (req)	472	respipe_close (respipe [0]);
514	{	473	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	}	474	}
560		475
561	return count;	476	#ifdef _WIN32
562	}	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)");
563		485
564	static void *aio_proc(void *arg);	486	respipe_osf [0] = TO_SOCKET (respipe [0]);
		487	respipe_osf [1] = TO_SOCKET (respipe [1]);
		488	}
565		489
566	static void start_thread (void)	490	static void poll_wait (void)
567	{	491	{
568	sigset_t fullsigset, oldsigset;	492	fd_set rfd;
569	pthread_attr_t attr;
570		493
571	worker *wrk = calloc (1, sizeof (worker));	494	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	{	495	{
587	wrk->prev = &wrk_first;	496	int size;
588	wrk->next = wrk_first.next;	497
589	wrk_first.next->prev = wrk;	498	X_LOCK (reslock);
590	wrk_first.next = wrk;	499	size = res_queue.size;
591	started++;	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);
592	}	511	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	512	}
599		513
600	static void req_send (aio_req req)	514	static int poll_cb (void)
601	{	515	{
602	while (started < wanted && nreqs >= started)	516	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	{	517	{
640	end_thread ();	518	int res = eio_poll ();
641	cur--;	519
		520	if (res > 0)
		521	croak (0);
		522
		523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
		525
		526	poll_wait ();
642	}	527	}
643
644	while (started > wanted)
645	{
646	poll_wait ();
647	poll_cb (0);
648	}
649	}	528	}
650		529
651	static void create_pipe ()	530	static void atfork_child (void)
652	{	531	{
653	if (pipe (respipe))	532	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	}	533	}
662		534
663	/*****************************************************************************/	535	static SV *
664	/* work around various missing functions */	536	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	{	537	{
679	ssize_t res;	538	HV *st;
680	off_t ooffset;	539	GV *gvp;
		540	CV *cv;
681		541
682	LOCK (preadwritelock);	542	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;	543	return 0;
770		544
771	#if HAVE_SENDFILE	545	cv = sv_2cv (cb_sv, &st, &gvp, 0);
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774		546
775	# elif __freebsd	547	if (!cv)
776	/*	548	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		549
784	if (res < 0 && sbytes)	550	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	}	551	}
1069		552
1070	#define dREQ \	553	#define dREQ \
		554	SV *cb_cv; \
1071	aio_req req; \	555	aio_req req; \
1072	int req_pri = next_pri; \	556	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	557	next_pri = EIO_PRI_DEFAULT; \
1074	\	558	\
1075	if (SvOK (callback) && !SvROK (callback)) \	559	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	560	\
1078	Newz (0, req, 1, aio_cb); \	561	Newz (0, req, 1, eio_req); \
1079	if (!req) \	562	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	563	croak ("out of memory during eio_req allocation"); \
1081	\	564	\
1082	req->callback = newSVsv (callback); \	565	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	566	req->pri = req_pri
1084		567
1085	#define REQ_SEND \	568	#define REQ_SEND \
		569	PUTBACK; \
1086	req_send (req); \	570	req_submit (req); \
		571	SPAGAIN; \
1087	\	572	\
1088	if (GIMME_V != G_VOID) \	573	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	574	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090		575
1091	MODULE = IO::AIO PACKAGE = IO::AIO	576	MODULE = IO::AIO PACKAGE = IO::AIO
1092		577
1093	PROTOTYPES: ENABLE	578	PROTOTYPES: ENABLE
1094		579
1095	BOOT:	580	BOOT:
1096	{	581	{
		582	static const struct {
		583	const char *name;
		584	IV iv;
		585	} *civ, const_iv[] = {
		586	# define const_iv(name, value) { # name, (IV) value },
		587	# define const_eio(name) { # name, (IV) EIO_ ## name },
		588	const_iv (EXDEV , EXDEV)
		589	const_iv (ENOSYS , ENOSYS)
		590	const_iv (O_RDONLY, O_RDONLY)
		591	const_iv (O_WRONLY, O_WRONLY)
		592	const_iv (O_CREAT , O_CREAT)
		593	const_iv (O_TRUNC , O_TRUNC)
		594	#ifndef _WIN32
		595	const_iv (S_IFIFO , S_IFIFO)
		596	#endif
		597	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		598	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		599	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		600	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		601	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		602	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		603
		604	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		605	const_eio (SYNC_FILE_RANGE_WRITE)
		606	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		607
		608	const_eio (READDIR_DENTS)
		609	const_eio (READDIR_DIRS_FIRST)
		610	const_eio (READDIR_STAT_ORDER)
		611	const_eio (READDIR_FOUND_UNKNOWN)
		612
		613	const_eio (DT_UNKNOWN)
		614	const_eio (DT_FIFO)
		615	const_eio (DT_CHR)
		616	const_eio (DT_DIR)
		617	const_eio (DT_BLK)
		618	const_eio (DT_REG)
		619	const_eio (DT_LNK)
		620	const_eio (DT_SOCK)
		621	const_eio (DT_WHT)
		622	};
		623
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	624	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		625
		626	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		627	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		628
1102	create_pipe ();	629	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		630
		631	if (eio_init (want_poll, done_poll) < 0)
		632	croak ("IO::AIO: unable to initialise eio library");
		633
		634	/* atfork child called in fifo order, so before eio's handler */
		635	X_THREAD_ATFORK (0, 0, atfork_child);
		636	}
		637
1106	void	638	void
1107	min_parallel (nthreads)	639	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	640	PROTOTYPE: $
		641	CODE:
		642	eio_set_max_poll_reqs (nreqs);
1110		643
1111	void	644	void
1112	max_parallel (nthreads)	645	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	646	PROTOTYPE: $
		647	CODE:
		648	eio_set_max_poll_time (nseconds);
1115		649
1116	void	650	void
		651	min_parallel (int nthreads)
		652	PROTOTYPE: $
		653	CODE:
		654	eio_set_min_parallel (nthreads);
		655
		656	void
		657	max_parallel (int nthreads)
		658	PROTOTYPE: $
		659	CODE:
		660	eio_set_max_parallel (nthreads);
		661
		662	void
		663	max_idle (int nthreads)
		664	PROTOTYPE: $
		665	CODE:
		666	eio_set_max_idle (nthreads);
		667
		668	void
		669	max_outstanding (int maxreqs)
		670	PROTOTYPE: $
		671	CODE:
		672	max_outstanding = maxreqs;
		673
		674	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	675	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: $$$;$	676	PROTOTYPE: $$$;$
1123	PPCODE:	677	PPCODE:
1124	{	678	{
1125	dREQ;	679	dREQ;
1126		680
1127	req->type = REQ_OPEN;	681	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	682	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	683	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	684	req->int1 = flags;
1131	req->mode = mode;	685	req->int2 = mode;
1132		686
1133	REQ_SEND;	687	REQ_SEND;
1134	}	688	}
1135		689
1136	void	690	void
1137	aio_close (fh,callback=&PL_sv_undef)	691	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	692	PROTOTYPE: $;$
1141	ALIAS:	693	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	694	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	695	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	696	PPCODE:
1146	{	697	{
		698	int fd = s_fileno_croak (fh, 0);
1147	dREQ;	699	dREQ;
1148		700
1149	req->type = ix;	701	req->type = ix;
1150	req->fh = newSVsv (fh);	702	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	703	req->int1 = fd;
1152		704
1153	REQ_SEND (req);	705	REQ_SEND (req);
1154	}	706	}
1155		707
1156	void	708	void
		709	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		710	PROTOTYPE: $$$$;$
		711	PPCODE:
		712	{
		713	int fd = s_fileno_croak (fh, 0);
		714	dREQ;
		715
		716	req->type = EIO_SYNC_FILE_RANGE;
		717	req->sv1 = newSVsv (fh);
		718	req->int1 = fd;
		719	req->offs = offset;
		720	req->size = nbytes;
		721	req->int2 = flags;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
		727	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		728	PROTOTYPE: $;$
		729	PPCODE:
		730	{
		731	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		732	int fd = s_fileno_croak (fh, 0);
		733	dREQ;
		734
		735	if (close_pipe < 0)
		736	{
		737	int pipefd [2];
		738
		739	if (pipe (pipefd) < 0
		740	|| close (pipefd [1]) < 0
		741	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		742	abort (); /*D*/
		743
		744	close_pipe = pipefd [0];
		745	}
		746
		747	req->type = EIO_DUP2;
		748	req->int1 = close_pipe;
		749	req->sv2 = newSVsv (fh);
		750	req->int2 = fd;
		751
		752	REQ_SEND (req);
		753	}
		754
		755	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	756	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	757	ALIAS:
1165	aio_read = REQ_READ	758	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	759	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	760	PROTOTYPE: $$$$$;$
1168	PPCODE:	761	PPCODE:
1169	{	762	{
1170	aio_req req;
1171	STRLEN svlen;	763	STRLEN svlen;
		764	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	765	char *svptr = SvPVbyte (data, svlen);
1173		766	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		767
1177	if (dataoffset < 0)	768	if (dataoffset < 0)
1178	dataoffset += svlen;	769	dataoffset += svlen;
1179		770
1180	if (dataoffset < 0 || dataoffset > svlen)	771	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	772	croak ("dataoffset outside of data scalar");
1182		773
1183	if (ix == REQ_WRITE)	774	if (ix == EIO_WRITE)
1184	{	775	{
1185	/* write: check length and adjust. */	776	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	777	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	778	len = svlen - dataoffset;
1188	}	779	}
1189	else	780	else
1190	{	781	{
1191	/* read: grow scalar as necessary */	782	/* read: check type and grow scalar as necessary */
		783	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	784	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	785	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		786
1198	{	787	{
1199	dREQ;	788	dREQ;
1200		789
1201	req->type = ix;	790	req->type = ix;
1202	req->fh = newSVsv (fh);	791	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	792	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	793	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	794	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	795	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	796	req->ptr2 = (char *)svptr + dataoffset;
		797	req->stroffset = dataoffset;
1209		798
1210	if (!SvREADONLY (data))	799	if (!SvREADONLY (data))
1211	{	800	{
1212	SvREADONLY_on (data);	801	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	802	req->flags |= FLAG_SV2_RO_OFF;
1214	}	803	}
1215		804
1216	REQ_SEND;	805	REQ_SEND;
1217	}	806	}
1218	}	807	}
1219		808
1220	void	809	void
		810	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		811	PROTOTYPE: $$;$
		812	PPCODE:
		813	{
		814	SV *data;
		815	dREQ;
		816
		817	req->type = EIO_READLINK;
		818	req->sv1 = newSVsv (path);
		819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	825	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: $$$$;$	826	PROTOTYPE: $$$$;$
1228	PPCODE:	827	PPCODE:
1229	{	828	{
		829	int ifd = s_fileno_croak (in_fh , 0);
		830	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	831	dREQ;
1231		832
1232	req->type = REQ_SENDFILE;	833	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	834	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	835	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	836	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	837	req->int2 = ifd;
1237	req->offset = in_offset;	838	req->offs = in_offset;
1238	req->length = length;	839	req->size = length;
1239		840
1240	REQ_SEND;	841	REQ_SEND;
1241	}	842	}
1242		843
1243	void	844	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	845	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	846	PROTOTYPE: $$$;$
1250	PPCODE:	847	PPCODE:
1251	{	848	{
		849	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	850	dREQ;
1253		851
1254	req->type = REQ_READAHEAD;	852	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	853	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	854	req->int1 = fd;
1257	req->offset = offset;	855	req->offs = offset;
1258	req->length = length;	856	req->size = length;
1259		857
1260	REQ_SEND;	858	REQ_SEND;
1261	}	859	}
1262		860
1263	void	861	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	862	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	863	ALIAS:
1268	aio_stat = REQ_STAT	864	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	865	aio_lstat = EIO_LSTAT
1270	PPCODE:	866	PPCODE:
1271	{	867	{
1272	dREQ;	868	dREQ;
1273		869
1274	New (0, req->statdata, 1, Stat_t);	870	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		871
1281	if (SvPOK (fh_or_path))	872	if (SvPOK (req->sv1))
1282	{	873	{
1283	req->type = ix;	874	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	875	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	876	}
1287	else	877	else
1288	{	878	{
1289	req->type = REQ_FSTAT;	879	req->type = EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	881	}
1293		882
1294	REQ_SEND;	883	REQ_SEND;
1295	}	884	}
1296		885
1297	void	886	void
		887	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		888	PPCODE:
		889	{
		890	dREQ;
		891
		892	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		893	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		894	req->sv1 = newSVsv (fh_or_path);
		895
		896	if (SvPOK (req->sv1))
		897	{
		898	req->type = EIO_UTIME;
		899	req->ptr1 = SvPVbyte_nolen (req->sv1);
		900	}
		901	else
		902	{
		903	req->type = EIO_FUTIME;
		904	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		905	}
		906
		907	REQ_SEND;
		908	}
		909
		910	void
		911	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		912	PPCODE:
		913	{
		914	dREQ;
		915
		916	req->sv1 = newSVsv (fh_or_path);
		917	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		918
		919	if (SvPOK (req->sv1))
		920	{
		921	req->type = EIO_TRUNCATE;
		922	req->ptr1 = SvPVbyte_nolen (req->sv1);
		923	}
		924	else
		925	{
		926	req->type = EIO_FTRUNCATE;
		927	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		928	}
		929
		930	REQ_SEND;
		931	}
		932
		933	void
		934	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		935	ALIAS:
		936	aio_chmod = EIO_CHMOD
		937	aio_mkdir = EIO_MKDIR
		938	PPCODE:
		939	{
		940	dREQ;
		941
		942	req->int2 = mode;
		943	req->sv1 = newSVsv (fh_or_path);
		944
		945	if (SvPOK (req->sv1))
		946	{
		947	req->type = ix;
		948	req->ptr1 = SvPVbyte_nolen (req->sv1);
		949	}
		950	else
		951	{
		952	req->type = EIO_FCHMOD;
		953	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		954	}
		955
		956	REQ_SEND;
		957	}
		958
		959	void
		960	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		961	PPCODE:
		962	{
		963	dREQ;
		964
		965	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		966	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		967	req->sv1 = newSVsv (fh_or_path);
		968
		969	if (SvPOK (req->sv1))
		970	{
		971	req->type = EIO_CHOWN;
		972	req->ptr1 = SvPVbyte_nolen (req->sv1);
		973	}
		974	else
		975	{
		976	req->type = EIO_FCHOWN;
		977	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		978	}
		979
		980	REQ_SEND;
		981	}
		982
		983	void
		984	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		985	PPCODE:
		986	{
		987	dREQ;
		988
		989	req->type = EIO_READDIR;
		990	req->sv1 = newSVsv (pathname);
		991	req->ptr1 = SvPVbyte_nolen (req->sv1);
		992	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		993
		994	if (flags & EIO_READDIR_DENTS)
		995	req->int1 |= EIO_READDIR_CUSTOM2;
		996
		997	REQ_SEND;
		998	}
		999
		1000	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1001	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1002	ALIAS:
1302	aio_unlink = REQ_UNLINK	1003	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1004	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1005	aio_readdir = EIO_READDIR
1305	PPCODE:	1006	PPCODE:
1306	{	1007	{
1307	dREQ;	1008	dREQ;
1308		1009
1309	req->type = ix;	1010	req->type = ix;
1310	req->data = newSVsv (pathname);	1011	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1012	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1013
1313	REQ_SEND;	1014	REQ_SEND;
1314	}	1015	}
1315		1016
1316	void	1017	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1018	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1019	ALIAS:
1322	aio_link = REQ_LINK	1020	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1021	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1022	aio_rename = EIO_RENAME
1325	PPCODE:	1023	PPCODE:
1326	{	1024	{
1327	dREQ;	1025	dREQ;
1328		1026
1329	req->type = ix;	1027	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1028	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1029	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1030	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1031	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1032
1335	REQ_SEND;	1033	REQ_SEND;
1336	}	1034	}
1337		1035
1338	void	1036	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1037	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1038	PPCODE:
1343	{	1039	{
1344	dREQ;	1040	dREQ;
1345		1041
1346	req->type = REQ_BUSY;	1042	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1043	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1045	req->int2 = (mode_t)mode;
		1046	req->offs = dev;
		1047
1350	REQ_SEND;	1048	REQ_SEND;
1351	}	1049	}
1352		1050
1353	void	1051	void
		1052	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1053	PPCODE:
		1054	{
		1055	dREQ;
		1056
		1057	req->type = EIO_BUSY;
		1058	req->nv1 = delay < 0. ? 0. : delay;
		1059
		1060	REQ_SEND;
		1061	}
		1062
		1063	void
1354	aio_group (callback=&PL_sv_undef)	1064	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1065	PROTOTYPE: ;$
1357	PPCODE:	1066	PPCODE:
1358	{	1067	{
1359	dREQ;	1068	dREQ;
1360		1069
1361	req->type = REQ_GROUP;	1070	req->type = EIO_GROUP;
		1071
1362	req_send (req);	1072	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1073	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	1074	}
1366		1075
1367	void	1076	void
1368	aio_nop (callback=&PL_sv_undef)	1077	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1078	ALIAS:
		1079	aio_nop = EIO_NOP
		1080	aio_sync = EIO_SYNC
1370	PPCODE:	1081	PPCODE:
1371	{	1082	{
1372	dREQ;	1083	dREQ;
1373		1084
1374	req->type = REQ_NOP;	1085	req->type = ix;
1375		1086
1376	REQ_SEND;	1087	REQ_SEND;
1377	}	1088	}
1378		1089
1379	void	1090	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1091	aioreq_pri (int pri = 0)
1381	CODE:	1092	PROTOTYPE: ;$
		1093	CODE:
		1094	RETVAL = next_pri;
		1095	if (items > 0)
		1096	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1097	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1098	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1099	next_pri = pri;
		1100	}
		1101	OUTPUT:
		1102	RETVAL
1385		1103
1386	void	1104	void
1387	aioreq_nice (int nice = 0)	1105	aioreq_nice (int nice = 0)
1388	CODE:	1106	CODE:
1389	nice = next_pri - nice;	1107	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1108	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1109	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1110	next_pri = nice;
1393		1111
1394	void	1112	void
1395	flush ()	1113	flush ()
1396	PROTOTYPE:	1114	PROTOTYPE:
1397	CODE:	1115	CODE:
1398	while (nreqs)	1116	while (eio_nreqs ())
1399	{	1117	{
1400	poll_wait ();	1118	poll_wait ();
1401	poll_cb (0);	1119	poll_cb ();
1402	}	1120	}
1403		1121
1404	void	1122	int
1405	poll()	1123	poll()
1406	PROTOTYPE:	1124	PROTOTYPE:
1407	CODE:	1125	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1126	poll_wait ();
1411	poll_cb (0);	1127	RETVAL = poll_cb ();
1412	}	1128	OUTPUT:
		1129	RETVAL
1413		1130
1414	int	1131	int
1415	poll_fileno()	1132	poll_fileno()
1416	PROTOTYPE:	1133	PROTOTYPE:
1417	CODE:	1134	CODE:
…		…
1421		1138
1422	int	1139	int
1423	poll_cb(...)	1140	poll_cb(...)
1424	PROTOTYPE:	1141	PROTOTYPE:
1425	CODE:	1142	CODE:
1426	RETVAL = poll_cb (0);	1143	RETVAL = poll_cb ();
1427	OUTPUT:	1144	OUTPUT:
1428	RETVAL	1145	RETVAL
1429		1146
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void	1147	void
1439	poll_wait()	1148	poll_wait()
1440	PROTOTYPE:	1149	PROTOTYPE:
1441	CODE:	1150	CODE:
1442	if (nreqs)
1443	poll_wait ();	1151	poll_wait ();
1444		1152
1445	int	1153	int
1446	nreqs()	1154	nreqs()
1447	PROTOTYPE:	1155	PROTOTYPE:
1448	CODE:	1156	CODE:
1449	RETVAL = nreqs;	1157	RETVAL = eio_nreqs ();
1450	OUTPUT:	1158	OUTPUT:
1451	RETVAL	1159	RETVAL
1452		1160
		1161	int
		1162	nready()
		1163	PROTOTYPE:
		1164	CODE:
		1165	RETVAL = eio_nready ();
		1166	OUTPUT:
		1167	RETVAL
		1168
		1169	int
		1170	npending()
		1171	PROTOTYPE:
		1172	CODE:
		1173	RETVAL = eio_npending ();
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	int
		1178	nthreads()
		1179	PROTOTYPE:
		1180	CODE:
		1181	RETVAL = eio_nthreads ();
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1190	RETVAL = posix_fadvise (fh, offset, length, advice);
		1191	#else
		1192	RETVAL = errno = ENOSYS;
		1193	#endif
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	ssize_t
		1198	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1199	PROTOTYPE: $$$$
		1200	CODE:
		1201	eio_sendfile_sync (ofh, ifh, offset, count);
		1202
		1203	void _on_next_submit (SV *cb)
		1204	CODE:
		1205	SvREFCNT_dec (on_next_submit);
		1206	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1207
1453	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
1454		1209
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1211
1457	void	1212	void
1458	cancel (aio_req_ornot req)	1213	cancel (aio_req_ornot req)
1459	CODE:	1214	CODE:
1460	req_cancel (req);	1215	eio_cancel (req);
1461		1216
1462	void	1217	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1218	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1219	PPCODE:
		1220	{
		1221	if (GIMME_V != G_VOID)
		1222	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1223
		1224	if (items > 1)
		1225	{
		1226	SV *cb_cv = get_cb (callback);
		1227
1465	SvREFCNT_dec (req->callback);	1228	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1229	req->callback = SvREFCNT_inc (cb_cv);
		1230	}
		1231	}
1467		1232
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1233	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1234
1470	void	1235	void
1471	add (aio_req grp, ...)	1236	add (aio_req grp, ...)
1472	PPCODE:	1237	PPCODE:
1473	{	1238	{
1474	int i;	1239	int i;
1475	aio_req req;
1476		1240
1477	if (grp->fd == 2)	1241	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1242	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1243
1480	for (i = 1; i < items; ++i )	1244	for (i = 1; i < items; ++i )
1481	{	1245	{
		1246	aio_req req;
		1247
1482	if (GIMME_V != G_VOID)	1248	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1249	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1250
1485	req = SvAIO_REQ (ST (i));	1251	req = SvAIO_REQ (ST (i));
1486		1252
1487	if (req)	1253	if (req)
1488	{	1254	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	}	1255	}
1501	}	1256	}
1502		1257
1503	void	1258	void
1504	cancel_subs (aio_req_ornot req)	1259	cancel_subs (aio_req_ornot req)
…		…
1508	void	1263	void
1509	result (aio_req grp, ...)	1264	result (aio_req grp, ...)
1510	CODE:	1265	CODE:
1511	{	1266	{
1512	int i;	1267	int i;
		1268	AV *av;
		1269
		1270	grp->errorno = errno;
		1271
1513	AV *av = newAV ();	1272	av = newAV ();
		1273	av_extend (av, items - 1);
1514		1274
1515	for (i = 1; i < items; ++i )	1275	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1276	av_push (av, newSVsv (ST (i)));
1517		1277
1518	SvREFCNT_dec (grp->data);	1278	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1279	grp->sv1 = (SV *)av;
1520	}	1280	}
		1281
		1282	void
		1283	errno (aio_req grp, int errorno = errno)
		1284	CODE:
		1285	grp->errorno = errorno;
1521		1286
1522	void	1287	void
1523	limit (aio_req grp, int limit)	1288	limit (aio_req grp, int limit)
1524	CODE:	1289	CODE:
1525	grp->fd2 = limit;	1290	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1291
1528	void	1292	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1293	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1294	CODE:
1531	{	1295	{
1532	SvREFCNT_dec (grp->fh2);	1296	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1297	grp->sv2 = newSVsv (callback);
		1298	grp->feed = aio_grp_feed;
1534		1299
1535	if (grp->fd2 <= 0)	1300	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1301	grp->int2 = 2;
1537		1302
1538	aio_grp_feed (grp);	1303	eio_grp_limit (grp, grp->int2);
1539	}	1304	}
1540		1305

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