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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.155 by root, Fri Jul 17 00:56:54 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	/* wether word reads are potentially non-atomic.	102	/*****************************************************************************/
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif
77		103
78	/* buffer size for various temporary buffers */	104	static HV *stash;
79	#define AIO_BUFSIZE 65536	105	typedef SV SV8; /* byte-sv, used for argument-checking */
80		106	typedef int aio_rfd; /* read file desriptor */
81	#define dBUF \	107	typedef int aio_wfd; /* write file descriptor */
82	char *aio_buf; \
83	LOCK (wrklock); \
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \
86	if (!aio_buf) \
87	return -1;
88
89	enum {
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		108
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		111
106	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;	113	SV *callback; \
111	SV *fh, *fh2;	114	SV *sv1, *sv2; \
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;	115	STRLEN stroffset; \
119	int type;	116	SV *self;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123		117
124	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
125	unsigned char pri;
126		119
127	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
129	} 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)
130		151
131	enum {	152	enum {
132	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
133	};	154	};
134		155
		156	#include "libeio/eio.c"
		157
135	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
137		160
138	enum {	161	static SV *on_next_submit;
139	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	163	static int max_outstanding;
141		164
142	DEFAULT_PRI = 0,	165	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		166
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
206
207	/*
208	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.
211	*/
212	typedef struct {
213	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
214	int size;
215	} reqq;
216
217	static reqq req_queue;
218	static reqq res_queue;
219
220	int reqq_push (reqq *q, aio_req req)
221	{
222	int pri = req->pri;
223	req->next = 0;
224
225	if (q->qe[pri])
226	{
227	q->qe[pri]->next = req;
228	q->qe[pri] = req;
229	}
230	else
231	q->qe[pri] = q->qs[pri] = req;
232
233	return q->size++;
234	}
235
236	aio_req reqq_shift (reqq *q)
237	{
238	int pri;
239
240	if (!q->size)
241	return 0;
242
243	--q->size;
244
245	for (pri = NUM_PRI; pri--; )
246	{
247	aio_req req = q->qs[pri];
248
249	if (req)
250	{
251	if (!(q->qs[pri] = req->next))
252	q->qe[pri] = 0;
253
254	return req;
255	}
256	}
257
258	abort ();
259	}
260
261	static int poll_cb (int max);
262	static void req_invoke (aio_req req);
263	static void req_free (aio_req req);	167	static void req_destroy (aio_req req);
264	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	s_epipe_signal (&respipe);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	s_epipe_drain (&respipe);
		180	}
265		181
266	/* must be called at most once */	182	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
268	{	184	{
269	if (!req->self)	185	if (!req->self)
…		…
287	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	204	}
289		205
290	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
291	{	207	{
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
293	{	209	{
294	int old_len = grp->length;
295
296	if (grp->fh2 && SvOK (grp->fh2))
297	{
298	dSP;	210	dSP;
299		211
300	ENTER;	212	ENTER;
301	SAVETMPS;	213	SAVETMPS;
302	PUSHMARK (SP);	214	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
304	PUTBACK;	216	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	218	SPAGAIN;
307	FREETMPS;	219	FREETMPS;
308	LEAVE;	220	LEAVE;
309	}
310
311	/* stop if no progress has been made */
312	if (old_len == grp->length)
313	{
314	SvREFCNT_dec (grp->fh2);
315	grp->fh2 = 0;
316	break;
317	}
318	}	221	}
319	}	222	}
320		223
321	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
322	{	225	{
323	--grp->length;	226	eio_submit (req);
324		227
325	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
326	aio_grp_feed (grp);
327
328	/* finish, if done */
329	if (!grp->length && grp->fd)
330	{	229	{
331	req_invoke (grp);	230	dSP;
332	req_free (grp);	231	SV *cb = sv_2mortal (on_next_submit);
		232
		233	on_next_submit = 0;
		234
		235	PUSHMARK (SP);
		236	PUTBACK;
		237	call_sv (cb, G_DISCARD | G_EVAL);
333	}	238	}
334	}	239	}
335		240
336	static void poll_wait ()
337	{
338	fd_set rfd;
339
340	while (nreqs)
341	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)	241	static int req_invoke (eio_req *req)
358	{	242	{
359	dSP;	243	dSP;
360		244
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	245	if (req->flags & FLAG_SV2_RO_OFF)
		246	SvREADONLY_off (req->sv2);
		247
		248	if (!EIO_CANCELLED (req) && req->callback)
362	{	249	{
363	ENTER;	250	ENTER;
364	SAVETMPS;	251	SAVETMPS;
365	PUSHMARK (SP);	252	PUSHMARK (SP);
366	EXTEND (SP, 1);	253	EXTEND (SP, 1);
367		254
368	switch (req->type)	255	switch (req->type)
369	{	256	{
370	case REQ_READDIR:	257	case EIO_READDIR:
371	{	258	{
372	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
373		260
374	if (req->result >= 0)	261	if (req->result >= 0)
375	{	262	{
376	int i;	263	int i;
377	char *buf = req->data2ptr;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
378	AV *av = newAV ();	266	AV *av = newAV ();
379		267
380	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
381		269
382	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
383	{	271	{
384	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
385		275
		276	if (req->int1 & EIO_READDIR_CUSTOM2)
		277	{
		278	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		279	AV *avent = newAV ();
		280
		281	av_extend (avent, 2);
		282
		283	if (!sv_type [ent->type])
		284	{
		285	sv_type [ent->type] = newSViv (ent->type);
		286	SvREADONLY_on (sv_type [ent->type]);
		287	}
		288
		289	av_store (avent, 0, namesv);
		290	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		291	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		292
		293	av_store (av, i, newRV_noinc ((SV *)avent));
		294	}
		295	else
386	av_store (av, i, sv);	296	av_store (av, i, namesv);
		297
		298	++ent;
		299	}
		300	else
		301	{
		302	SV *name = newSVpv (names, 0);
		303	av_store (av, i, name);
387	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
388	}	306	}
389		307
390	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
391	}	309	}
392		310
393	PUSHs (rv);	311	PUSHs (rv);
		312
		313	if (req->int1 & EIO_READDIR_CUSTOM1)
		314	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
394	}	315	}
395	break;	316	break;
396		317
397	case REQ_OPEN:	318	case EIO_OPEN:
398	{	319	{
399	/* convert fd to fh */	320	/* convert fd to fh */
400	SV *fh;	321	SV *fh = &PL_sv_undef;
401		322
402	PUSHs (sv_2mortal (newSViv (req->result)));	323	if (req->result >= 0)
403	PUTBACK;	324	{
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	325	GV *gv = (GV *)sv_newmortal ();
405	SPAGAIN;	326	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		327	char sym [64];
		328	int symlen;
		329
		330	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		331	gv_init (gv, stash, sym, symlen, 0);
406		332
407	fh = SvREFCNT_inc (POPs);	333	symlen = snprintf (
		334	sym,
		335	sizeof (sym),
		336	"%s&=%d",
		337	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		338	(int)req->result
		339	);
408		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
409	PUSHMARK (SP);	345	PUSHs (fh);
410	XPUSHs (sv_2mortal (fh));
411	}	346	}
412	break;	347	break;
413		348
414	case REQ_GROUP:	349	case EIO_GROUP:
415	req->fd = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
416		351
417	if (req->data)	352	if (req->sv1)
418	{	353	{
419	int i;	354	int i;
420	AV *av = (AV *)req->data;	355	AV *av = (AV *)req->sv1;
421		356
422	EXTEND (SP, AvFILL (av) + 1);	357	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
425	}	360	}
426	break;	361	break;
427		362
428	case REQ_NOP:	363	case EIO_NOP:
429	case REQ_BUSY:	364	case EIO_BUSY:
430	break;	365	break;
		366
		367	case EIO_READLINK:
		368	if (req->result > 0)
		369	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		370	break;
		371
		372	case EIO_STAT:
		373	case EIO_LSTAT:
		374	case EIO_FSTAT:
		375	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		376	PL_laststatval = req->result;
		377	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		378	PUSHs (sv_2mortal (newSViv (req->result)));
		379	break;
		380
		381	case EIO_READ:
		382	{
		383	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		384	*SvEND (req->sv2) = 0;
		385	SvPOK_only (req->sv2);
		386	SvSETMAGIC (req->sv2);
		387	PUSHs (sv_2mortal (newSViv (req->result)));
		388	}
		389	break;
		390
		391	case EIO_DUP2:
		392	if (req->result > 0)
		393	req->result = 0;
		394	/* FALLTHROUGH */
431		395
432	default:	396	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
434	break;	398	break;
435	}	399	}
436		400
437	errno = req->errorno;	401	errno = req->errorno;
438		402
439	PUTBACK;	403	PUTBACK;
440	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
441	SPAGAIN;	405	SPAGAIN;
442		406
443	FREETMPS;	407	FREETMPS;
444	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
445	}	411	}
446		412
447	if (req->grp)	413	return !!SvTRUE (ERRSV);
448	{
449	aio_req grp = req->grp;
450
451	/* unlink request */
452	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
453	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
454
455	if (grp->grp_first == req)
456	grp->grp_first = req->grp_next;
457
458	aio_grp_dec (grp);
459	}
460
461	if (SvTRUE (ERRSV))
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	414	}
467		415
468	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
469	{	417	{
470	if (req->self)	418	if (req->self)
471	{	419	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
474	}	422	}
475		423
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
479	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481
482	if (req->type == REQ_READDIR)
483	free (req->data2ptr);
484		427
485	Safefree (req);	428	Safefree (req);
486	}	429	}
487		430
488	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
489	{	432	{
490	aio_req sub;	433	aio_req sub;
491		434
492	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
493	return;	436	return;
494		437
495	SvREFCNT_dec (grp->fh2);	438	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	439	grp->sv2 = 0;
497		440
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
499	req_cancel (sub);
500	}	442	}
501		443
502	static void req_cancel (aio_req req)	444	static void
		445	create_respipe (void)
503	{	446	{
504	req->flags |= FLAG_CANCELLED;	447	if (s_epipe_renew (&respipe))
505		448	croak ("IO::AIO: unable to initialize result pipe");
506	req_cancel_subs (req);
507	}	449	}
508		450
		451	static void poll_wait (void)
		452	{
		453	while (eio_nreqs ())
		454	{
		455	int size;
		456
		457	X_LOCK (reslock);
		458	size = res_queue.size;
		459	X_UNLOCK (reslock);
		460
		461	if (size)
		462	return;
		463
		464	etp_maybe_start_thread ();
		465
		466	s_epipe_wait (&respipe);
		467	}
		468	}
		469
509	static int poll_cb (int max)	470	static int poll_cb (void)
510	{	471	{
511	dSP;
512	int count = 0;
513	int do_croak = 0;
514	aio_req req;
515
516	for (;;)	472	for (;;)
517	{	473	{
518	while (max <= 0 || count < max)	474	int res = eio_poll ();
519	{
520	LOCK (reslock);
521	req = reqq_shift (&res_queue);
522		475
523	if (req)	476	if (res > 0)
524	{
525	--npending;
526
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}
550	else
551	{
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}
572
573	if (nreqs <= max_outstanding)
574	break;	477	croak (0);
		478
		479	if (!max_outstanding || max_outstanding > eio_nreqs ())
		480	return res;
575		481
576	poll_wait ();	482	poll_wait ();
577
578	max = 0;
579	}	483	}
580
581	return count;
582	}
583
584	static void *aio_proc(void *arg);
585
586	static void start_thread (void)
587	{
588	sigset_t fullsigset, oldsigset;
589	pthread_attr_t attr;
590
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600	sigfillset (&fullsigset);
601
602	LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606	{
607	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;
609	wrk_first.next->prev = wrk;
610	wrk_first.next = wrk;
611	++started;
612	}
613	else
614	free (wrk);
615
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);
618	}
619
620	static void req_send (aio_req req)
621	{
622	while (started < wanted && nreqs >= started)
623	start_thread ();
624
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	req_send (req);
644	}
645
646	static void min_parallel (int nthreads)
647	{
648	if (wanted < nthreads)
649	wanted = nthreads;
650	}
651
652	static void max_parallel (int nthreads)
653	{
654	int cur = started;
655
656	if (wanted > nthreads)
657	wanted = nthreads;
658
659	while (cur > wanted)
660	{
661	end_thread ();
662	cur--;
663	}
664
665	while (started > wanted)
666	{
667	poll_wait ();
668	poll_cb (0);
669	}
670	}
671
672	static void create_pipe ()
673	{
674	if (pipe (respipe))
675	croak ("unable to initialize result pipe");
676
677	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
678	croak ("cannot set result pipe to nonblocking mode");
679
680	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
681	croak ("cannot set result pipe to nonblocking mode");
682	}
683
684	/*****************************************************************************/
685	/* work around various missing functions */
686
687	#if !HAVE_PREADWRITE
688	# define pread aio_pread
689	# define pwrite aio_pwrite
690
691	/*
692	* make our pread/pwrite safe against themselves, but not against
693	* normal read/write by using a mutex. slows down execution a lot,
694	* but that's your problem, not mine.
695	*/
696	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
697
698	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699	{
700	ssize_t res;
701	off_t ooffset;
702
703	LOCK (preadwritelock);
704	ooffset = lseek (fd, 0, SEEK_CUR);
705	lseek (fd, offset, SEEK_SET);
706	res = read (fd, buf, count);
707	lseek (fd, ooffset, SEEK_SET);
708	UNLOCK (preadwritelock);
709
710	return res;
711	}
712
713	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
714	{
715	ssize_t res;
716	off_t ooffset;
717
718	LOCK (preadwritelock);
719	ooffset = lseek (fd, 0, SEEK_CUR);
720	lseek (fd, offset, SEEK_SET);
721	res = write (fd, buf, count);
722	lseek (fd, offset, SEEK_SET);
723	UNLOCK (preadwritelock);
724
725	return res;
726	}
727	#endif
728
729	#if !HAVE_FDATASYNC
730	# define fdatasync fsync
731	#endif
732
733	#if !HAVE_READAHEAD
734	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
735
736	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
737	{
738	dBUF;
739
740	while (count > 0)
741	{
742	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
743
744	pread (fd, aio_buf, len, offset);
745	offset += len;
746	count -= len;
747	}
748
749	errno = 0;
750	}
751
752	#endif
753
754	#if !HAVE_READDIR_R
755	# define readdir_r aio_readdir_r
756
757	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
758
759	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760	{
761	struct dirent *e;
762	int errorno;
763
764	LOCK (readdirlock);
765
766	e = readdir (dirp);
767	errorno = errno;
768
769	if (e)
770	{
771	*res = ent;
772	strcpy (ent->d_name, e->d_name);
773	}
774	else
775	*res = 0;
776
777	UNLOCK (readdirlock);
778
779	errno = errorno;
780	return e ? 0 : -1;
781	}
782	#endif
783
784	/* sendfile always needs emulation */
785	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
786	{
787	ssize_t res;
788
789	if (!count)
790	return 0;
791
792	#if HAVE_SENDFILE
793	# if __linux
794	res = sendfile (ofd, ifd, &offset, count);
795
796	# elif __freebsd
797	/*
798	* Of course, the freebsd sendfile is a dire hack with no thoughts
799	* wasted on making it similar to other I/O functions.
800	*/
801	{
802	off_t sbytes;
803	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
804
805	if (res < 0 && sbytes)
806	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
807	res = sbytes;
808	}
809
810	# elif __hpux
811	res = sendfile (ofd, ifd, offset, count, 0, 0);
812
813	# elif __solaris
814	{
815	struct sendfilevec vec;
816	size_t sbytes;
817
818	vec.sfv_fd = ifd;
819	vec.sfv_flag = 0;
820	vec.sfv_off = offset;
821	vec.sfv_len = count;
822
823	res = sendfilev (ofd, &vec, 1, &sbytes);
824
825	if (res < 0 && sbytes)
826	res = sbytes;
827	}
828
829	# endif
830	#else
831	res = -1;
832	errno = ENOSYS;
833	#endif
834
835	if (res < 0
836	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
837	#if __solaris
838	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
839	#endif
840	)
841	)
842	{
843	/* emulate sendfile. this is a major pain in the ass */
844	dBUF;
845
846	res = 0;
847
848	while (count)
849	{
850	ssize_t cnt;
851
852	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
853
854	if (cnt <= 0)
855	{
856	if (cnt && !res) res = -1;
857	break;
858	}
859
860	cnt = write (ofd, aio_buf, cnt);
861
862	if (cnt <= 0)
863	{
864	if (cnt && !res) res = -1;
865	break;
866	}
867
868	offset += cnt;
869	res += cnt;
870	count -= cnt;
871	}
872	}
873
874	return res;
875	}
876
877	/* read a full directory */
878	static void scandir_ (aio_req req, worker *self)
879	{
880	DIR *dirp;
881	union
882	{
883	struct dirent d;
884	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
885	} *u;
886	struct dirent *entp;
887	char *name, *names;
888	int memlen = 4096;
889	int memofs = 0;
890	int res = 0;
891	int errorno;
892
893	LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);
895	self->dbuf = u = malloc (sizeof (*u));
896	req->data2ptr = names = malloc (memlen);
897	UNLOCK (wrklock);
898
899	if (dirp && u && names)
900	for (;;)
901	{
902	errno = 0;
903	readdir_r (dirp, &u->d, &entp);
904
905	if (!entp)
906	break;
907
908	name = entp->d_name;
909
910	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
911	{
912	int len = strlen (name) + 1;
913
914	res++;
915
916	while (memofs + len > memlen)
917	{
918	memlen *= 2;
919	LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);
921	UNLOCK (wrklock);
922
923	if (!names)
924	break;
925	}
926
927	memcpy (names + memofs, name, len);
928	memofs += len;
929	}
930	}
931
932	if (errno)
933	res = -1;
934
935	req->result = res;
936	}
937
938	/*****************************************************************************/
939
940	static void *aio_proc (void *thr_arg)
941	{
942	aio_req req;
943	int type;
944	worker *self = (worker *)thr_arg;
945
946	do
947	{
948	LOCK (reqlock);
949
950	for (;;)
951	{
952	self->req = req = reqq_shift (&req_queue);
953
954	if (req)
955	break;
956
957	pthread_cond_wait (&reqwait, &reqlock);
958	}
959
960	--nready;
961
962	UNLOCK (reqlock);
963
964	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966
967	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)
969	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
972
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
975
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
979
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
987
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;
990	case REQ_READDIR: scandir_ (req, self); break;
991
992	case REQ_BUSY:
993	{
994	struct timeval tv;
995
996	tv.tv_sec = req->fd;
997	tv.tv_usec = req->fd2;
998
999	req->result = select (0, 0, 0, 0, &tv);
1000	}
1001
1002	case REQ_GROUP:
1003	case REQ_NOP:
1004	case REQ_QUIT:
1005	break;
1006
1007	default:
1008	req->result = ENOSYS;
1009	break;
1010	}
1011
1012	req->errorno = errno;
1013
1014	LOCK (reslock);
1015
1016	++npending;
1017
1018	if (!reqq_push (&res_queue, req))
1019	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);
1021
1022	self->req = 0;
1023	worker_clear (self);
1024
1025	UNLOCK (reslock);
1026	}
1027	while (type != REQ_QUIT);
1028
1029	LOCK (wrklock);
1030	worker_free (self);
1031	UNLOCK (wrklock);
1032
1033	return 0;
1034	}
1035
1036	/*****************************************************************************/
1037
1038	static void atfork_prepare (void)
1039	{
1040	LOCK (wrklock);
1041	LOCK (reqlock);
1042	LOCK (reslock);
1043	#if !HAVE_PREADWRITE
1044	LOCK (preadwritelock);
1045	#endif
1046	#if !HAVE_READDIR_R
1047	LOCK (readdirlock);
1048	#endif
1049	}
1050
1051	static void atfork_parent (void)
1052	{
1053	#if !HAVE_READDIR_R
1054	UNLOCK (readdirlock);
1055	#endif
1056	#if !HAVE_PREADWRITE
1057	UNLOCK (preadwritelock);
1058	#endif
1059	UNLOCK (reslock);
1060	UNLOCK (reqlock);
1061	UNLOCK (wrklock);
1062	}	484	}
1063		485
1064	static void atfork_child (void)	486	static void atfork_child (void)
1065	{	487	{
1066	aio_req prv;
1067
1068	while (prv = reqq_shift (&req_queue))
1069	req_free (prv);
1070
1071	while (prv = reqq_shift (&res_queue))
1072	req_free (prv);
1073
1074	while (wrk_first.next != &wrk_first)
1075	{
1076	worker *wrk = wrk_first.next;
1077
1078	if (wrk->req)
1079	req_free (wrk->req);
1080
1081	worker_clear (wrk);
1082	worker_free (wrk);
1083	}
1084
1085	started = 0;
1086	nreqs = 0;
1087
1088	close (respipe [0]);
1089	close (respipe [1]);
1090	create_pipe ();	488	create_respipe ();
		489	}
1091		490
1092	atfork_parent ();	491	static SV *
		492	get_cb (SV *cb_sv)
		493	{
		494	SvGETMAGIC (cb_sv);
		495	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1093	}	496	}
1094		497
1095	#define dREQ \	498	#define dREQ \
		499	SV *cb_cv; \
1096	aio_req req; \	500	aio_req req; \
1097	int req_pri = next_pri; \	501	int req_pri = next_pri; \
1098	next_pri = DEFAULT_PRI + PRI_BIAS; \	502	next_pri = EIO_PRI_DEFAULT; \
1099	\	503	\
1100	if (SvOK (callback) && !SvROK (callback)) \	504	cb_cv = get_cb (callback); \
1101	croak ("callback must be undef or of reference type"); \
1102	\	505	\
1103	Newz (0, req, 1, aio_cb); \	506	Newz (0, req, 1, eio_req); \
1104	if (!req) \	507	if (!req) \
1105	croak ("out of memory during aio_req allocation"); \	508	croak ("out of memory during eio_req allocation"); \
1106	\	509	\
1107	req->callback = newSVsv (callback); \	510	req->callback = SvREFCNT_inc (cb_cv); \
1108	req->pri = req_pri	511	req->pri = req_pri
1109		512
1110	#define REQ_SEND \	513	#define REQ_SEND \
		514	PUTBACK; \
1111	req_send (req); \	515	req_submit (req); \
		516	SPAGAIN; \
1112	\	517	\
1113	if (GIMME_V != G_VOID) \	518	if (GIMME_V != G_VOID) \
1114	XPUSHs (req_sv (req, AIO_REQ_KLASS));	519	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1115		520
1116	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
1117		522
1118	PROTOTYPES: ENABLE	523	PROTOTYPES: ENABLE
1119		524
1120	BOOT:	525	BOOT:
1121	{	526	{
		527	static const struct {
		528	const char *name;
		529	IV iv;
		530	} *civ, const_iv[] = {
		531	# define const_iv(name, value) { # name, (IV) value },
		532	# define const_eio(name) { # name, (IV) EIO_ ## name },
		533	const_iv (EXDEV , EXDEV)
		534	const_iv (ENOSYS , ENOSYS)
		535	const_iv (O_RDONLY, O_RDONLY)
		536	const_iv (O_WRONLY, O_WRONLY)
		537	const_iv (O_CREAT , O_CREAT)
		538	const_iv (O_TRUNC , O_TRUNC)
		539	#ifndef _WIN32
		540	const_iv (S_IFIFO , S_IFIFO)
		541	#endif
		542	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		543	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		544	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		545	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		546	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		547	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		548
		549	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		550	const_eio (SYNC_FILE_RANGE_WRITE)
		551	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		552
		553	const_eio (READDIR_DENTS)
		554	const_eio (READDIR_DIRS_FIRST)
		555	const_eio (READDIR_STAT_ORDER)
		556	const_eio (READDIR_FOUND_UNKNOWN)
		557
		558	const_eio (DT_UNKNOWN)
		559	const_eio (DT_FIFO)
		560	const_eio (DT_CHR)
		561	const_eio (DT_DIR)
		562	const_eio (DT_BLK)
		563	const_eio (DT_REG)
		564	const_eio (DT_LNK)
		565	const_eio (DT_SOCK)
		566	const_eio (DT_WHT)
		567	};
		568
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	569	stash = gv_stashpv ("IO::AIO", 1);
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1126		570
		571	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		572	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		573
1127	create_pipe ();	574	create_respipe ();
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	575
		576	if (eio_init (want_poll, done_poll) < 0)
		577	croak ("IO::AIO: unable to initialise eio library");
		578
		579	/* atfork child called in fifo order, so before eio's handler */
		580	X_THREAD_ATFORK (0, 0, atfork_child);
1129	}	581	}
		582
		583	void
		584	max_poll_reqs (int nreqs)
		585	PROTOTYPE: $
		586	CODE:
		587	eio_set_max_poll_reqs (nreqs);
		588
		589	void
		590	max_poll_time (double nseconds)
		591	PROTOTYPE: $
		592	CODE:
		593	eio_set_max_poll_time (nseconds);
1130		594
1131	void	595	void
1132	min_parallel (int nthreads)	596	min_parallel (int nthreads)
1133	PROTOTYPE: $	597	PROTOTYPE: $
		598	CODE:
		599	eio_set_min_parallel (nthreads);
1134		600
1135	void	601	void
1136	max_parallel (int nthreads)	602	max_parallel (int nthreads)
1137	PROTOTYPE: $	603	PROTOTYPE: $
		604	CODE:
		605	eio_set_max_parallel (nthreads);
1138		606
1139	int	607	void
		608	max_idle (int nthreads)
		609	PROTOTYPE: $
		610	CODE:
		611	eio_set_max_idle (nthreads);
		612
		613	void
1140	max_outstanding (int maxreqs)	614	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	615	PROTOTYPE: $
1142	CODE:	616	CODE:
1143	RETVAL = max_outstanding;
1144	max_outstanding = maxreqs;	617	max_outstanding = maxreqs;
1145	OUTPUT:
1146	RETVAL
1147		618
1148	void	619	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	620	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	int flags
1152	int mode
1153	SV * callback
1154	PROTOTYPE: $$$;$	621	PROTOTYPE: $$$;$
1155	PPCODE:	622	PPCODE:
1156	{	623	{
1157	dREQ;	624	dREQ;
1158		625
1159	req->type = REQ_OPEN;	626	req->type = EIO_OPEN;
1160	req->data = newSVsv (pathname);	627	req->sv1 = newSVsv (pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);	628	req->ptr1 = SvPVbyte_nolen (req->sv1);
1162	req->fd = flags;	629	req->int1 = flags;
1163	req->mode = mode;	630	req->int2 = mode;
1164		631
1165	REQ_SEND;	632	REQ_SEND;
1166	}	633	}
1167		634
1168	void	635	void
1169	aio_close (fh,callback=&PL_sv_undef)	636	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1170	SV * fh
1171	SV * callback
1172	PROTOTYPE: $;$	637	PROTOTYPE: $;$
1173	ALIAS:	638	ALIAS:
1174	aio_close = REQ_CLOSE
1175	aio_fsync = REQ_FSYNC	639	aio_fsync = EIO_FSYNC
1176	aio_fdatasync = REQ_FDATASYNC	640	aio_fdatasync = EIO_FDATASYNC
1177	PPCODE:	641	PPCODE:
1178	{	642	{
		643	int fd = s_fileno_croak (fh, 0);
1179	dREQ;	644	dREQ;
1180		645
1181	req->type = ix;	646	req->type = ix;
1182	req->fh = newSVsv (fh);	647	req->sv1 = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	648	req->int1 = fd;
1184		649
1185	REQ_SEND (req);	650	REQ_SEND (req);
1186	}	651	}
1187		652
1188	void	653	void
		654	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		655	PROTOTYPE: $$$$;$
		656	PPCODE:
		657	{
		658	int fd = s_fileno_croak (fh, 0);
		659	dREQ;
		660
		661	req->type = EIO_SYNC_FILE_RANGE;
		662	req->sv1 = newSVsv (fh);
		663	req->int1 = fd;
		664	req->offs = offset;
		665	req->size = nbytes;
		666	req->int2 = flags;
		667
		668	REQ_SEND (req);
		669	}
		670
		671	void
		672	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		673	PROTOTYPE: $;$
		674	PPCODE:
		675	{
		676	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		677	int fd = s_fileno_croak (fh, 0);
		678	dREQ;
		679
		680	if (close_pipe < 0)
		681	{
		682	int pipefd [2];
		683
		684	if (pipe (pipefd) < 0
		685	|| close (pipefd [1]) < 0
		686	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		687	abort (); /*D*/
		688
		689	close_pipe = pipefd [0];
		690	}
		691
		692	req->type = EIO_DUP2;
		693	req->int1 = close_pipe;
		694	req->sv2 = newSVsv (fh);
		695	req->int2 = fd;
		696
		697	REQ_SEND (req);
		698	}
		699
		700	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	701	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1190	SV * fh
1191	UV offset
1192	UV length
1193	SV * data
1194	UV dataoffset
1195	SV * callback
1196	ALIAS:	702	ALIAS:
1197	aio_read = REQ_READ	703	aio_read = EIO_READ
1198	aio_write = REQ_WRITE	704	aio_write = EIO_WRITE
1199	PROTOTYPE: $$$$$;$	705	PROTOTYPE: $$$$$;$
1200	PPCODE:	706	PPCODE:
1201	{	707	{
1202	aio_req req;
1203	STRLEN svlen;	708	STRLEN svlen;
		709	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1204	char *svptr = SvPVbyte (data, svlen);	710	char *svptr = SvPVbyte (data, svlen);
1205		711	UV len = SvUV (length);
1206	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);
1208		712
1209	if (dataoffset < 0)	713	if (dataoffset < 0)
1210	dataoffset += svlen;	714	dataoffset += svlen;
1211		715
1212	if (dataoffset < 0 || dataoffset > svlen)	716	if (dataoffset < 0 || dataoffset > svlen)
1213	croak ("data offset outside of string");	717	croak ("dataoffset outside of data scalar");
1214		718
1215	if (ix == REQ_WRITE)	719	if (ix == EIO_WRITE)
1216	{	720	{
1217	/* write: check length and adjust. */	721	/* write: check length and adjust. */
1218	if (length < 0 || length + dataoffset > svlen)	722	if (!SvOK (length) || len + dataoffset > svlen)
1219	length = svlen - dataoffset;	723	len = svlen - dataoffset;
1220	}	724	}
1221	else	725	else
1222	{	726	{
1223	/* read: grow scalar as necessary */	727	/* read: check type and grow scalar as necessary */
		728	SvUPGRADE (data, SVt_PV);
1224	svptr = SvGROW (data, length + dataoffset);	729	svptr = SvGROW (data, len + dataoffset + 1);
1225	}	730	}
1226
1227	if (length < 0)
1228	croak ("length must not be negative");
1229		731
1230	{	732	{
1231	dREQ;	733	dREQ;
1232		734
1233	req->type = ix;	735	req->type = ix;
1234	req->fh = newSVsv (fh);	736	req->sv1 = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	737	req->int1 = fd;
1236	: IoOFP (sv_2io (fh)));	738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237	req->offset = offset;	739	req->size = len;
1238	req->length = length;
1239	req->data = SvREFCNT_inc (data);	740	req->sv2 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	741	req->ptr2 = (char *)svptr + dataoffset;
		742	req->stroffset = dataoffset;
1241		743
1242	if (!SvREADONLY (data))	744	if (!SvREADONLY (data))
1243	{	745	{
1244	SvREADONLY_on (data);	746	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	747	req->flags |= FLAG_SV2_RO_OFF;
1246	}	748	}
1247		749
1248	REQ_SEND;	750	REQ_SEND;
1249	}	751	}
1250	}	752	}
1251		753
1252	void	754	void
		755	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		756	PROTOTYPE: $$;$
		757	PPCODE:
		758	{
		759	SV *data;
		760	dREQ;
		761
		762	req->type = EIO_READLINK;
		763	req->sv1 = newSVsv (path);
		764	req->ptr1 = SvPVbyte_nolen (req->sv1);
		765
		766	REQ_SEND;
		767	}
		768
		769	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	770	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1254	SV * out_fh
1255	SV * in_fh
1256	UV in_offset
1257	UV length
1258	SV * callback
1259	PROTOTYPE: $$$$;$	771	PROTOTYPE: $$$$;$
1260	PPCODE:	772	PPCODE:
1261	{	773	{
		774	int ifd = s_fileno_croak (in_fh , 0);
		775	int ofd = s_fileno_croak (out_fh, 1);
1262	dREQ;	776	dREQ;
1263		777
1264	req->type = REQ_SENDFILE;	778	req->type = EIO_SENDFILE;
1265	req->fh = newSVsv (out_fh);	779	req->sv1 = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	780	req->int1 = ofd;
1267	req->fh2 = newSVsv (in_fh);	781	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	782	req->int2 = ifd;
1269	req->offset = in_offset;	783	req->offs = in_offset;
1270	req->length = length;	784	req->size = length;
1271		785
1272	REQ_SEND;	786	REQ_SEND;
1273	}	787	}
1274		788
1275	void	789	void
1276	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	790	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1277	SV * fh
1278	UV offset
1279	IV length
1280	SV * callback
1281	PROTOTYPE: $$$;$	791	PROTOTYPE: $$$;$
1282	PPCODE:	792	PPCODE:
1283	{	793	{
		794	int fd = s_fileno_croak (fh, 0);
1284	dREQ;	795	dREQ;
1285		796
1286	req->type = REQ_READAHEAD;	797	req->type = EIO_READAHEAD;
1287	req->fh = newSVsv (fh);	798	req->sv1 = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	799	req->int1 = fd;
1289	req->offset = offset;	800	req->offs = offset;
1290	req->length = length;	801	req->size = length;
1291		802
1292	REQ_SEND;	803	REQ_SEND;
1293	}	804	}
1294		805
1295	void	806	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	807	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1297	SV * fh_or_path
1298	SV * callback
1299	ALIAS:	808	ALIAS:
1300	aio_stat = REQ_STAT	809	aio_stat = EIO_STAT
1301	aio_lstat = REQ_LSTAT	810	aio_lstat = EIO_LSTAT
1302	PPCODE:	811	PPCODE:
1303	{	812	{
1304	dREQ;	813	dREQ;
1305		814
1306	New (0, req->statdata, 1, Stat_t);	815	req->sv1 = newSVsv (fh_or_path);
1307	if (!req->statdata)
1308	{
1309	req_free (req);
1310	croak ("out of memory during aio_req->statdata allocation");
1311	}
1312		816
1313	if (SvPOK (fh_or_path))	817	if (SvPOK (req->sv1))
1314	{	818	{
1315	req->type = ix;	819	req->type = ix;
1316	req->data = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);	820	req->ptr1 = SvPVbyte_nolen (req->sv1);
1318	}	821	}
1319	else	822	else
1320	{	823	{
1321	req->type = REQ_FSTAT;	824	req->type = EIO_FSTAT;
1322	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	825	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}	826	}
1325		827
1326	REQ_SEND;	828	REQ_SEND;
1327	}	829	}
1328		830
1329	void	831	void
		832	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		833	PPCODE:
		834	{
		835	dREQ;
		836
		837	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		838	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		839	req->sv1 = newSVsv (fh_or_path);
		840
		841	if (SvPOK (req->sv1))
		842	{
		843	req->type = EIO_UTIME;
		844	req->ptr1 = SvPVbyte_nolen (req->sv1);
		845	}
		846	else
		847	{
		848	req->type = EIO_FUTIME;
		849	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		850	}
		851
		852	REQ_SEND;
		853	}
		854
		855	void
		856	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		857	PPCODE:
		858	{
		859	dREQ;
		860
		861	req->sv1 = newSVsv (fh_or_path);
		862	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		863
		864	if (SvPOK (req->sv1))
		865	{
		866	req->type = EIO_TRUNCATE;
		867	req->ptr1 = SvPVbyte_nolen (req->sv1);
		868	}
		869	else
		870	{
		871	req->type = EIO_FTRUNCATE;
		872	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		873	}
		874
		875	REQ_SEND;
		876	}
		877
		878	void
		879	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		880	ALIAS:
		881	aio_chmod = EIO_CHMOD
		882	aio_mkdir = EIO_MKDIR
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->int2 = mode;
		888	req->sv1 = newSVsv (fh_or_path);
		889
		890	if (SvPOK (req->sv1))
		891	{
		892	req->type = ix;
		893	req->ptr1 = SvPVbyte_nolen (req->sv1);
		894	}
		895	else
		896	{
		897	req->type = EIO_FCHMOD;
		898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		899	}
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		906	PPCODE:
		907	{
		908	dREQ;
		909
		910	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		911	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		912	req->sv1 = newSVsv (fh_or_path);
		913
		914	if (SvPOK (req->sv1))
		915	{
		916	req->type = EIO_CHOWN;
		917	req->ptr1 = SvPVbyte_nolen (req->sv1);
		918	}
		919	else
		920	{
		921	req->type = EIO_FCHOWN;
		922	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		923	}
		924
		925	REQ_SEND;
		926	}
		927
		928	void
		929	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		930	PPCODE:
		931	{
		932	dREQ;
		933
		934	req->type = EIO_READDIR;
		935	req->sv1 = newSVsv (pathname);
		936	req->ptr1 = SvPVbyte_nolen (req->sv1);
		937	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		938
		939	if (flags & EIO_READDIR_DENTS)
		940	req->int1 |= EIO_READDIR_CUSTOM2;
		941
		942	REQ_SEND;
		943	}
		944
		945	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	946	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1331	SV * pathname
1332	SV * callback
1333	ALIAS:	947	ALIAS:
1334	aio_unlink = REQ_UNLINK	948	aio_unlink = EIO_UNLINK
1335	aio_rmdir = REQ_RMDIR	949	aio_rmdir = EIO_RMDIR
1336	aio_readdir = REQ_READDIR	950	aio_readdir = EIO_READDIR
1337	PPCODE:	951	PPCODE:
1338	{	952	{
1339	dREQ;	953	dREQ;
1340		954
1341	req->type = ix;	955	req->type = ix;
1342	req->data = newSVsv (pathname);	956	req->sv1 = newSVsv (pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	957	req->ptr1 = SvPVbyte_nolen (req->sv1);
		958
		959	REQ_SEND;
		960	}
		961
		962	void
		963	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		964	ALIAS:
		965	aio_link = EIO_LINK
		966	aio_symlink = EIO_SYMLINK
		967	aio_rename = EIO_RENAME
		968	PPCODE:
		969	{
		970	dREQ;
		971
		972	req->type = ix;
		973	req->sv1 = newSVsv (oldpath);
		974	req->ptr1 = SvPVbyte_nolen (req->sv1);
		975	req->sv2 = newSVsv (newpath);
		976	req->ptr2 = SvPVbyte_nolen (req->sv2);
1344		977
1345	REQ_SEND;	978	REQ_SEND;
1346	}	979	}
1347		980
1348	void	981	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	982	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1350	SV * oldpath
1351	SV * newpath
1352	SV * callback
1353	ALIAS:
1354	aio_link = REQ_LINK
1355	aio_symlink = REQ_SYMLINK
1356	aio_rename = REQ_RENAME
1357	PPCODE:	983	PPCODE:
1358	{	984	{
1359	dREQ;	985	dREQ;
1360		986
1361	req->type = ix;	987	req->type = EIO_MKNOD;
1362	req->fh = newSVsv (oldpath);	988	req->sv1 = newSVsv (pathname);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	989	req->ptr1 = SvPVbyte_nolen (req->sv1);
1364	req->data = newSVsv (newpath);	990	req->int2 = (mode_t)mode;
1365	req->dataptr = SvPVbyte_nolen (req->data);	991	req->offs = dev;
1366		992
1367	REQ_SEND;	993	REQ_SEND;
1368	}	994	}
1369		995
1370	void	996	void
1371	aio_busy (delay,callback=&PL_sv_undef)	997	aio_busy (double delay, SV *callback=&PL_sv_undef)
1372	double delay
1373	SV * callback
1374	PPCODE:	998	PPCODE:
1375	{	999	{
1376	dREQ;	1000	dREQ;
1377		1001
1378	req->type = REQ_BUSY;	1002	req->type = EIO_BUSY;
1379	req->fd = delay < 0. ? 0 : delay;	1003	req->nv1 = delay < 0. ? 0. : delay;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1381		1004
1382	REQ_SEND;	1005	REQ_SEND;
1383	}	1006	}
1384		1007
1385	void	1008	void
1386	aio_group (callback=&PL_sv_undef)	1009	aio_group (SV *callback=&PL_sv_undef)
1387	SV * callback
1388	PROTOTYPE: ;$	1010	PROTOTYPE: ;$
1389	PPCODE:	1011	PPCODE:
1390	{	1012	{
1391	dREQ;	1013	dREQ;
1392		1014
1393	req->type = REQ_GROUP;	1015	req->type = EIO_GROUP;
		1016
1394	req_send (req);	1017	req_submit (req);
1395
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1018	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1397	}	1019	}
1398		1020
1399	void	1021	void
1400	aio_nop (callback=&PL_sv_undef)	1022	aio_nop (SV *callback=&PL_sv_undef)
1401	SV * callback	1023	ALIAS:
		1024	aio_nop = EIO_NOP
		1025	aio_sync = EIO_SYNC
1402	PPCODE:	1026	PPCODE:
1403	{	1027	{
1404	dREQ;	1028	dREQ;
1405		1029
1406	req->type = REQ_NOP;	1030	req->type = ix;
1407		1031
1408	REQ_SEND;	1032	REQ_SEND;
1409	}	1033	}
1410		1034
1411	int	1035	int
1412	aioreq_pri (int pri = 0)	1036	aioreq_pri (int pri = 0)
1413	PROTOTYPE: ;$	1037	PROTOTYPE: ;$
1414	CODE:	1038	CODE:
1415	RETVAL = next_pri - PRI_BIAS;	1039	RETVAL = next_pri;
1416	if (items > 0)	1040	if (items > 0)
1417	{	1041	{
1418	if (pri < PRI_MIN) pri = PRI_MIN;	1042	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1419	if (pri > PRI_MAX) pri = PRI_MAX;	1043	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1420	next_pri = pri + PRI_BIAS;	1044	next_pri = pri;
1421	}	1045	}
1422	OUTPUT:	1046	OUTPUT:
1423	RETVAL	1047	RETVAL
1424		1048
1425	void	1049	void
1426	aioreq_nice (int nice = 0)	1050	aioreq_nice (int nice = 0)
1427	CODE:	1051	CODE:
1428	nice = next_pri - nice;	1052	nice = next_pri - nice;
1429	if (nice < PRI_MIN) nice = PRI_MIN;	1053	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1430	if (nice > PRI_MAX) nice = PRI_MAX;	1054	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1431	next_pri = nice + PRI_BIAS;	1055	next_pri = nice;
1432		1056
1433	void	1057	void
1434	flush ()	1058	flush ()
1435	PROTOTYPE:	1059	PROTOTYPE:
1436	CODE:	1060	CODE:
1437	while (nreqs)	1061	while (eio_nreqs ())
1438	{	1062	{
1439	poll_wait ();	1063	poll_wait ();
1440	poll_cb (0);	1064	poll_cb ();
1441	}	1065	}
1442		1066
1443	void	1067	int
1444	poll()	1068	poll()
1445	PROTOTYPE:	1069	PROTOTYPE:
1446	CODE:	1070	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();	1071	poll_wait ();
1450	poll_cb (0);	1072	RETVAL = poll_cb ();
1451	}	1073	OUTPUT:
		1074	RETVAL
1452		1075
1453	int	1076	int
1454	poll_fileno()	1077	poll_fileno()
1455	PROTOTYPE:	1078	PROTOTYPE:
1456	CODE:	1079	CODE:
1457	RETVAL = respipe [0];	1080	RETVAL = s_epipe_fd (&respipe);
1458	OUTPUT:	1081	OUTPUT:
1459	RETVAL	1082	RETVAL
1460		1083
1461	int	1084	int
1462	poll_cb(...)	1085	poll_cb(...)
1463	PROTOTYPE:	1086	PROTOTYPE:
1464	CODE:	1087	CODE:
1465	RETVAL = poll_cb (0);	1088	RETVAL = poll_cb ();
1466	OUTPUT:	1089	OUTPUT:
1467	RETVAL	1090	RETVAL
1468		1091
1469	int
1470	poll_some(int max = 0)
1471	PROTOTYPE: $
1472	CODE:
1473	RETVAL = poll_cb (max);
1474	OUTPUT:
1475	RETVAL
1476
1477	void	1092	void
1478	poll_wait()	1093	poll_wait()
1479	PROTOTYPE:	1094	PROTOTYPE:
1480	CODE:	1095	CODE:
1481	if (nreqs)
1482	poll_wait ();	1096	poll_wait ();
1483		1097
1484	int	1098	int
1485	nreqs()	1099	nreqs()
1486	PROTOTYPE:	1100	PROTOTYPE:
1487	CODE:	1101	CODE:
1488	RETVAL = nreqs;	1102	RETVAL = eio_nreqs ();
1489	OUTPUT:	1103	OUTPUT:
1490	RETVAL	1104	RETVAL
1491		1105
1492	int	1106	int
1493	nready()	1107	nready()
1494	PROTOTYPE:	1108	PROTOTYPE:
1495	CODE:	1109	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1110	RETVAL = eio_nready ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1111	OUTPUT:
1500	RETVAL	1112	RETVAL
1501		1113
1502	int	1114	int
1503	npending()	1115	npending()
1504	PROTOTYPE:	1116	PROTOTYPE:
1505	CODE:	1117	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);
1507	RETVAL = npending;	1118	RETVAL = eio_npending ();
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);
1509	OUTPUT:	1119	OUTPUT:
1510	RETVAL	1120	RETVAL
1511		1121
		1122	int
		1123	nthreads()
		1124	PROTOTYPE:
		1125	CODE:
		1126	RETVAL = eio_nthreads ();
		1127	OUTPUT:
		1128	RETVAL
		1129
		1130	int
		1131	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1132	PROTOTYPE: $$$$
		1133	CODE:
		1134	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1135	RETVAL = posix_fadvise (fh, offset, length, advice);
		1136	#else
		1137	RETVAL = errno = ENOSYS;
		1138	#endif
		1139	OUTPUT:
		1140	RETVAL
		1141
		1142	ssize_t
		1143	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1144	PROTOTYPE: $$$$
		1145	CODE:
		1146	eio_sendfile_sync (ofh, ifh, offset, count);
		1147
		1148	void _on_next_submit (SV *cb)
		1149	CODE:
		1150	SvREFCNT_dec (on_next_submit);
		1151	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1152
1512	PROTOTYPES: DISABLE	1153	PROTOTYPES: DISABLE
1513		1154
1514	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1155	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515		1156
1516	void	1157	void
1517	cancel (aio_req_ornot req)	1158	cancel (aio_req_ornot req)
1518	CODE:	1159	CODE:
1519	req_cancel (req);	1160	eio_cancel (req);
1520		1161
1521	void	1162	void
1522	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1163	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1523	CODE:	1164	PPCODE:
		1165	{
		1166	if (GIMME_V != G_VOID)
		1167	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1168
		1169	if (items > 1)
		1170	{
		1171	SV *cb_cv =get_cb (callback);
		1172
1524	SvREFCNT_dec (req->callback);	1173	SvREFCNT_dec (req->callback);
1525	req->callback = newSVsv (callback);	1174	req->callback = SvREFCNT_inc (cb_cv);
		1175	}
		1176	}
1526		1177
1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1178	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528		1179
1529	void	1180	void
1530	add (aio_req grp, ...)	1181	add (aio_req grp, ...)
1531	PPCODE:	1182	PPCODE:
1532	{	1183	{
1533	int i;	1184	int i;
1534	aio_req req;
1535		1185
1536	if (grp->fd == 2)	1186	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1187	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		1188
1539	for (i = 1; i < items; ++i )	1189	for (i = 1; i < items; ++i )
1540	{	1190	{
		1191	aio_req req;
		1192
1541	if (GIMME_V != G_VOID)	1193	if (GIMME_V != G_VOID)
1542	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1194	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543		1195
1544	req = SvAIO_REQ (ST (i));	1196	req = SvAIO_REQ (ST (i));
1545		1197
1546	if (req)	1198	if (req)
1547	{	1199	eio_grp_add (grp, req);
1548	++grp->length;
1549	req->grp = grp;
1550
1551	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;
1553
1554	if (grp->grp_first)
1555	grp->grp_first->grp_prev = req;
1556
1557	grp->grp_first = req;
1558	}
1559	}	1200	}
1560	}	1201	}
1561		1202
1562	void	1203	void
1563	cancel_subs (aio_req_ornot req)	1204	cancel_subs (aio_req_ornot req)
…		…
1572	AV *av;	1213	AV *av;
1573		1214
1574	grp->errorno = errno;	1215	grp->errorno = errno;
1575		1216
1576	av = newAV ();	1217	av = newAV ();
		1218	av_extend (av, items - 1);
1577		1219
1578	for (i = 1; i < items; ++i )	1220	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	1221	av_push (av, newSVsv (ST (i)));
1580		1222
1581	SvREFCNT_dec (grp->data);	1223	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	1224	grp->sv1 = (SV *)av;
1583	}	1225	}
1584		1226
1585	void	1227	void
1586	errno (aio_req grp, int errorno = errno)	1228	errno (aio_req grp, int errorno = errno)
1587	CODE:	1229	CODE:
1588	grp->errorno = errorno;	1230	grp->errorno = errorno;
1589		1231
1590	void	1232	void
1591	limit (aio_req grp, int limit)	1233	limit (aio_req grp, int limit)
1592	CODE:	1234	CODE:
1593	grp->fd2 = limit;	1235	eio_grp_limit (grp, limit);
1594	aio_grp_feed (grp);
1595		1236
1596	void	1237	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	1238	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	1239	CODE:
1599	{	1240	{
1600	SvREFCNT_dec (grp->fh2);	1241	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	1242	grp->sv2 = newSVsv (callback);
		1243	grp->feed = aio_grp_feed;
1602		1244
1603	if (grp->fd2 <= 0)	1245	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	1246	grp->int2 = 2;
1605		1247
1606	aio_grp_feed (grp);	1248	eio_grp_limit (grp, grp->int2);
1607	}	1249	}
1608		1250

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