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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 1.148 by root, Wed Jun 17 01:14:48 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
32		17
33	#if HAVE_SENDFILE	18	/* perl namespace pollution */
34	# if __linux	19	#undef VERSION
35	# include <sys/sendfile.h>	20
36	# elif __freebsd	21	#ifdef _WIN32
37	# include <sys/socket.h>	22
38	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	24	# undef malloc
40	# include <sys/socket.h>	25	# undef free
41	# elif __solaris /* not yet */	26
42	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
43	# else	59	#else
44	# error sendfile support requested but not available	60
45	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
46	#endif	68	#endif
47		69
48	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
49	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
50	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
51	#endif	87	#endif
52		88
53	#ifndef PTHREAD_STACK_MIN	89	/*****************************************************************************/
54	/* care for broken platforms, e.g. windows */	90
55	# define PTHREAD_STACK_MIN 16384	91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
		93	#else
		94	# define expect(expr,value) (expr)
56	#endif	95	#endif
57		96
58	#if __ia64	97	#define expect_false(expr) expect ((expr) != 0, 0)
59	# define STACKSIZE 65536	98	#define expect_true(expr) expect ((expr) != 0, 1)
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65		99
66	/* buffer size for various temporary buffers */	100	/*****************************************************************************/
67	#define AIO_BUFSIZE 65536
68		101
69	#define dBUF \	102	static HV *stash;
70	char *aio_buf; \	103	typedef SV SV8; /* byte-sv, used for argument-checking */
71	LOCK (wrklock); \	104	typedef int aio_rfd; /* read file desriptor */
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	105	typedef int aio_wfd; /* write file descriptor */
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76
77	enum {
78	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};
90		106
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
93		109
94	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
95	{
96	struct aio_cb *volatile next;
97
98	SV *data, *callback;	111	SV *callback; \
99	SV *fh, *fh2;	112	SV *sv1, *sv2; \
100	void *dataptr, *data2ptr;
101	Stat_t *statdata;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105
106	STRLEN dataoffset;	113	STRLEN stroffset; \
107	int type;	114	SV *self;
108	int fd, fd2;
109	int errorno;
110	mode_t mode; /* open */
111		115
112	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
113	unsigned char pri;
114		117
115	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
117	} aio_cb;	120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	#endif
		123
		124	#ifndef POSIX_FADV_SEQUENTIAL
		125	# define POSIX_FADV_SEQUENTIAL 0
		126	#endif
		127
		128	#ifndef POSIX_FADV_RANDOM
		129	# define POSIX_FADV_RANDOM 0
		130	#endif
		131
		132	#ifndef POSIX_FADV_NOREUSE
		133	# define POSIX_FADV_NOREUSE 0
		134	#endif
		135
		136	#ifndef POSIX_FADV_WILLNEED
		137	# define POSIX_FADV_WILLNEED 0
		138	#endif
		139
		140	#ifndef POSIX_FADV_DONTNEED
		141	# define POSIX_FADV_DONTNEED 0
		142	#endif
		143
		144	static int req_invoke (eio_req *req);
		145	#define EIO_FINISH(req) req_invoke (req)
		146	static void req_destroy (eio_req *grp);
		147	#define EIO_DESTROY(req) req_destroy (req)
118		148
119	enum {	149	enum {
120	FLAG_CANCELLED = 0x01,	150	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121	};	151	};
122		152
		153	#include "libeio/eio.c"
		154
123	typedef aio_cb *aio_req;	155	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	156	typedef eio_req *aio_req_ornot;
125		157
126	enum {	158	static SV *on_next_submit;
127	PRI_MIN = -4,	159	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	160	static int max_outstanding;
129		161
130	DEFAULT_PRI = 0,	162	static int respipe_osf [2], respipe [2] = { -1, -1 };
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		163
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);	164	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	165	static void req_cancel (aio_req req);
		166
		167	static void want_poll (void)
		168	{
		169	/* write a dummy byte to the pipe so fh becomes ready */
		170	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		171	}
		172
		173	static void done_poll (void)
		174	{
		175	/* read any signals sent by the worker threads */
		176	char buf [4];
		177	while (respipe_read (respipe [0], buf, 4) == 4)
		178	;
		179	}
252		180
253	/* must be called at most once */	181	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	182	static SV *req_sv (aio_req req, const char *klass)
255	{	183	{
256	if (!req->self)	184	if (!req->self)
…		…
274	return mg ? (aio_req)mg->mg_ptr : 0;	202	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	203	}
276		204
277	static void aio_grp_feed (aio_req grp)	205	static void aio_grp_feed (aio_req grp)
278	{	206	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	207	if (grp->sv2 && SvOK (grp->sv2))
280	{	208	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	209	dSP;
286		210
287	ENTER;	211	ENTER;
288	SAVETMPS;	212	SAVETMPS;
289	PUSHMARK (SP);	213	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
291	PUTBACK;	215	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	216	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	217	SPAGAIN;
294	FREETMPS;	218	FREETMPS;
295	LEAVE;	219	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	}	220	}
306	}	221	}
307		222
308	static void aio_grp_dec (aio_req grp)	223	static void req_submit (eio_req *req)
309	{	224	{
310	--grp->length;	225	eio_submit (req);
311		226
312	/* call feeder, if applicable */	227	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	228	{
318	req_invoke (grp);	229	dSP;
319	req_free (grp);	230	SV *cb = sv_2mortal (on_next_submit);
		231
		232	on_next_submit = 0;
		233
		234	PUSHMARK (SP);
		235	PUTBACK;
		236	call_sv (cb, G_DISCARD | G_EVAL);
320	}	237	}
321	}	238	}
322		239
323	static void poll_wait ()	240	static int req_invoke (eio_req *req)
324	{	241	{
325	fd_set rfd;	242	dSP;
326		243
327	while (nreqs)	244	if (req->flags & FLAG_SV2_RO_OFF)
		245	SvREADONLY_off (req->sv2);
		246
		247	if (!EIO_CANCELLED (req) && req->callback)
328	{	248	{
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;	249	ENTER;
357	SAVETMPS;	250	SAVETMPS;
358	PUSHMARK (SP);	251	PUSHMARK (SP);
359	EXTEND (SP, 1);	252	EXTEND (SP, 1);
360		253
361	switch (req->type)	254	switch (req->type)
362	{	255	{
363	case REQ_READDIR:	256	case EIO_READDIR:
364	{	257	{
365	SV *rv = &PL_sv_undef;	258	SV *rv = &PL_sv_undef;
366		259
367	if (req->result >= 0)	260	if (req->result >= 0)
368	{	261	{
369	int i;	262	int i;
370	char *buf = req->data2ptr;	263	char *names = (char *)req->ptr2;
		264	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	265	AV *av = newAV ();
372		266
373	av_extend (av, req->result - 1);	267	av_extend (av, req->result - 1);
374		268
375	for (i = 0; i < req->result; ++i)	269	for (i = 0; i < req->result; ++i)
376	{	270	{
377	SV *sv = newSVpv (buf, 0);	271	if (req->int1 & EIO_READDIR_DENTS)
		272	{
		273	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		274
		275	if (req->int1 & EIO_READDIR_CUSTOM2)
		276	{
		277	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		278	AV *avent = newAV ();
		279
		280	av_extend (avent, 2);
		281
		282	if (!sv_type [ent->type])
		283	{
		284	sv_type [ent->type] = newSViv (ent->type);
		285	SvREADONLY_on (sv_type [ent->type]);
		286	}
		287
		288	av_store (avent, 0, namesv);
		289	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		290	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		291
		292	av_store (av, i, newRV_noinc ((SV *)avent));
		293	}
		294	else
379	av_store (av, i, sv);	295	av_store (av, i, namesv);
		296
		297	++ent;
		298	}
		299	else
		300	{
		301	SV *name = newSVpv (names, 0);
		302	av_store (av, i, name);
380	buf += SvCUR (sv) + 1;	303	names += SvCUR (name) + 1;
		304	}
381	}	305	}
382		306
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	307	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	308	}
385		309
386	PUSHs (rv);	310	PUSHs (rv);
		311
		312	if (req->int1 & EIO_READDIR_CUSTOM1)
		313	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
387	}	314	}
388	break;	315	break;
389		316
390	case REQ_OPEN:	317	case EIO_OPEN:
391	{	318	{
392	/* convert fd to fh */	319	/* convert fd to fh */
393	SV *fh;	320	SV *fh = &PL_sv_undef;
394		321
395	PUSHs (sv_2mortal (newSViv (req->result)));	322	if (req->result >= 0)
396	PUTBACK;	323	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	324	GV *gv = (GV *)sv_newmortal ();
398	SPAGAIN;	325	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		326	char sym [64];
		327	int symlen;
		328
		329	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		330	gv_init (gv, stash, sym, symlen, 0);
399		331
400	fh = SvREFCNT_inc (POPs);	332	symlen = snprintf (
		333	sym,
		334	sizeof (sym),
		335	"%s&=%d",
		336	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		337	(int)req->result
		338	);
401		339
		340	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		341	fh = (SV *)gv;
		342	}
		343
402	PUSHMARK (SP);	344	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	345	}
405	break;	346	break;
406		347
407	case REQ_GROUP:	348	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	349	req->int1 = 2; /* mark group as finished */
409		350
410	if (req->data)	351	if (req->sv1)
411	{	352	{
412	int i;	353	int i;
413	AV *av = (AV *)req->data;	354	AV *av = (AV *)req->sv1;
414		355
415	EXTEND (SP, AvFILL (av) + 1);	356	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	357	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	358	PUSHs (*av_fetch (av, i, 0));
418	}	359	}
419	break;	360	break;
420		361
421	case REQ_NOP:	362	case EIO_NOP:
422	case REQ_BUSY:	363	case EIO_BUSY:
423	break;	364	break;
		365
		366	case EIO_READLINK:
		367	if (req->result > 0)
		368	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		369	break;
		370
		371	case EIO_STAT:
		372	case EIO_LSTAT:
		373	case EIO_FSTAT:
		374	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		375	PL_laststatval = req->result;
		376	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		377	PUSHs (sv_2mortal (newSViv (req->result)));
		378	break;
		379
		380	case EIO_READ:
		381	{
		382	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		383	*SvEND (req->sv2) = 0;
		384	SvPOK_only (req->sv2);
		385	SvSETMAGIC (req->sv2);
		386	PUSHs (sv_2mortal (newSViv (req->result)));
		387	}
		388	break;
		389
		390	case EIO_DUP2:
		391	if (req->result > 0)
		392	req->result = 0;
		393	/* FALLTHROUGH */
424		394
425	default:	395	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	396	PUSHs (sv_2mortal (newSViv (req->result)));
427	break;	397	break;
428	}	398	}
429		399
		400	errno = req->errorno;
430		401
431	PUTBACK;	402	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	403	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	404	SPAGAIN;
434		405
435	FREETMPS;	406	FREETMPS;
436	LEAVE;	407	LEAVE;
		408
		409	PUTBACK;
437	}	410	}
438		411
439	if (req->grp)	412	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	}	413	}
459		414
460	static void req_free (aio_req req)	415	static void req_destroy (aio_req req)
461	{	416	{
462	if (req->self)	417	if (req->self)
463	{	418	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	419	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	420	SvREFCNT_dec (req->self);
466	}	421	}
467		422
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	423	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	424	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	425	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476		426
477	Safefree (req);	427	Safefree (req);
478	}	428	}
479		429
480	static void req_cancel_subs (aio_req grp)	430	static void req_cancel_subs (aio_req grp)
481	{	431	{
482	aio_req sub;	432	aio_req sub;
483		433
484	if (grp->type != REQ_GROUP)	434	if (grp->type != EIO_GROUP)
485	return;	435	return;
486		436
487	SvREFCNT_dec (grp->fh2);	437	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	438	grp->sv2 = 0;
489		439
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	440	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	441	}
493		442
494	static void req_cancel (aio_req req)	443	#ifdef USE_SOCKETS_AS_HANDLES
495	{	444	# define TO_SOCKET(x) (win32_get_osfhandle (x))
496	req->flags |= FLAG_CANCELLED;	445	#else
		446	# define TO_SOCKET(x) (x)
		447	#endif
497		448
498	req_cancel_subs (req);	449	static void
499	}	450	create_respipe (void)
500
501	static int poll_cb (int max)
502	{	451	{
503	dSP;	452	int old_readfd = respipe [0];
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507		453
508	while (max <= 0 || count < max)	454	if (respipe [1] >= 0)
		455	respipe_close (TO_SOCKET (respipe [1]));
		456
		457	#ifdef _WIN32
		458	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		459	#else
		460	if (pipe (respipe))
		461	#endif
		462	croak ("unable to initialize result pipe");
		463
		464	if (old_readfd >= 0)
509	{	465	{
510	LOCK (reslock);	466	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
511	req = reqq_shift (&res_queue);	467	croak ("unable to initialize result pipe(2)");
512		468
513	if (req)	469	respipe_close (respipe [0]);
514	{	470	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	}	471	}
560		472
561	return count;	473	#ifdef _WIN32
562	}	474	int arg = 1;
		475	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		476	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		477	#else
		478	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		479	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		480	#endif
		481	croak ("unable to initialize result pipe(3)");
563		482
564	static void *aio_proc(void *arg);	483	respipe_osf [0] = TO_SOCKET (respipe [0]);
		484	respipe_osf [1] = TO_SOCKET (respipe [1]);
		485	}
565		486
566	static void start_thread (void)	487	static void poll_wait (void)
567	{	488	{
568	sigset_t fullsigset, oldsigset;	489	fd_set rfd;
569	pthread_attr_t attr;
570		490
571	worker *wrk = calloc (1, sizeof (worker));	491	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	{	492	{
587	wrk->prev = &wrk_first;	493	int size;
588	wrk->next = wrk_first.next;	494
589	wrk_first.next->prev = wrk;	495	X_LOCK (reslock);
590	wrk_first.next = wrk;	496	size = res_queue.size;
591	started++;	497	X_UNLOCK (reslock);
		498
		499	if (size)
		500	return;
		501
		502	etp_maybe_start_thread ();
		503
		504	FD_ZERO (&rfd);
		505	FD_SET (respipe [0], &rfd);
		506
		507	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
592	}	508	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	509	}
599		510
600	static void req_send (aio_req req)	511	static int poll_cb (void)
601	{	512	{
602	while (started < wanted && nreqs >= started)	513	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	{	514	{
640	end_thread ();	515	int res = eio_poll ();
641	cur--;	516
		517	if (res > 0)
		518	croak (0);
		519
		520	if (!max_outstanding || max_outstanding > eio_nreqs ())
		521	return res;
		522
		523	poll_wait ();
642	}	524	}
643
644	while (started > wanted)
645	{
646	poll_wait ();
647	poll_cb (0);
648	}
649	}	525	}
650		526
651	static void create_pipe ()	527	static void atfork_child (void)
652	{	528	{
653	if (pipe (respipe))	529	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	}	530	}
662		531
663	/*****************************************************************************/	532	static SV *
664	/* work around various missing functions */	533	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	{	534	{
679	ssize_t res;	535	HV *st;
680	off_t ooffset;	536	GV *gvp;
		537	CV *cv;
681		538
682	LOCK (preadwritelock);	539	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;	540	return 0;
770		541
771	#if HAVE_SENDFILE	542	cv = sv_2cv (cb_sv, &st, &gvp, 0);
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774		543
775	# elif __freebsd	544	if (!cv)
776	/*	545	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		546
784	if (res < 0 && sbytes)	547	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	}	548	}
1069		549
1070	#define dREQ \	550	#define dREQ \
		551	SV *cb_cv; \
1071	aio_req req; \	552	aio_req req; \
1072	int req_pri = next_pri; \	553	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	554	next_pri = EIO_PRI_DEFAULT; \
1074	\	555	\
1075	if (SvOK (callback) && !SvROK (callback)) \	556	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	557	\
1078	Newz (0, req, 1, aio_cb); \	558	Newz (0, req, 1, eio_req); \
1079	if (!req) \	559	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	560	croak ("out of memory during eio_req allocation"); \
1081	\	561	\
1082	req->callback = newSVsv (callback); \	562	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	563	req->pri = req_pri
1084		564
1085	#define REQ_SEND \	565	#define REQ_SEND \
		566	PUTBACK; \
1086	req_send (req); \	567	req_submit (req); \
		568	SPAGAIN; \
1087	\	569	\
1088	if (GIMME_V != G_VOID) \	570	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	571	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090		572
		573	static int
		574	extract_fd (SV *fh, int wr)
		575	{
		576	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		577
		578	if (fd < 0)
		579	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		580
		581	return fd;
		582	}
		583
1091	MODULE = IO::AIO PACKAGE = IO::AIO	584	MODULE = IO::AIO PACKAGE = IO::AIO
1092		585
1093	PROTOTYPES: ENABLE	586	PROTOTYPES: ENABLE
1094		587
1095	BOOT:	588	BOOT:
1096	{	589	{
		590	static const struct {
		591	const char *name;
		592	IV iv;
		593	} *civ, const_iv[] = {
		594	# define const_iv(name, value) { # name, (IV) value },
		595	# define const_eio(name) { # name, (IV) EIO_ ## name },
		596	const_iv (EXDEV , EXDEV)
		597	const_iv (ENOSYS , ENOSYS)
		598	const_iv (O_RDONLY, O_RDONLY)
		599	const_iv (O_WRONLY, O_WRONLY)
		600	const_iv (O_CREAT , O_CREAT)
		601	const_iv (O_TRUNC , O_TRUNC)
		602	#ifndef _WIN32
		603	const_iv (S_IFIFO , S_IFIFO)
		604	#endif
		605	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		606	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		607	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		608	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		609	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		610	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		611
		612	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		613	const_eio (SYNC_FILE_RANGE_WRITE)
		614	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		615
		616	const_eio (READDIR_DENTS)
		617	const_eio (READDIR_DIRS_FIRST)
		618	const_eio (READDIR_STAT_ORDER)
		619	const_eio (READDIR_FOUND_UNKNOWN)
		620
		621	const_eio (DT_UNKNOWN)
		622	const_eio (DT_FIFO)
		623	const_eio (DT_CHR)
		624	const_eio (DT_DIR)
		625	const_eio (DT_BLK)
		626	const_eio (DT_REG)
		627	const_eio (DT_LNK)
		628	const_eio (DT_SOCK)
		629	const_eio (DT_WHT)
		630	};
		631
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	632	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		633
		634	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		635	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		636
1102	create_pipe ();	637	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		638
		639	if (eio_init (want_poll, done_poll) < 0)
		640	croak ("IO::AIO: unable to initialise eio library");
		641
		642	/* atfork child called in fifo order, so before eio's handler */
		643	X_THREAD_ATFORK (0, 0, atfork_child);
		644	}
		645
1106	void	646	void
1107	min_parallel (nthreads)	647	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	648	PROTOTYPE: $
		649	CODE:
		650	eio_set_max_poll_reqs (nreqs);
1110		651
1111	void	652	void
1112	max_parallel (nthreads)	653	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	654	PROTOTYPE: $
		655	CODE:
		656	eio_set_max_poll_time (nseconds);
1115		657
1116	void	658	void
		659	min_parallel (int nthreads)
		660	PROTOTYPE: $
		661	CODE:
		662	eio_set_min_parallel (nthreads);
		663
		664	void
		665	max_parallel (int nthreads)
		666	PROTOTYPE: $
		667	CODE:
		668	eio_set_max_parallel (nthreads);
		669
		670	void
		671	max_idle (int nthreads)
		672	PROTOTYPE: $
		673	CODE:
		674	eio_set_max_idle (nthreads);
		675
		676	void
		677	max_outstanding (int maxreqs)
		678	PROTOTYPE: $
		679	CODE:
		680	max_outstanding = maxreqs;
		681
		682	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	683	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: $$$;$	684	PROTOTYPE: $$$;$
1123	PPCODE:	685	PPCODE:
1124	{	686	{
1125	dREQ;	687	dREQ;
1126		688
1127	req->type = REQ_OPEN;	689	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	690	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	691	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	692	req->int1 = flags;
1131	req->mode = mode;	693	req->int2 = mode;
1132		694
1133	REQ_SEND;	695	REQ_SEND;
1134	}	696	}
1135		697
1136	void	698	void
1137	aio_close (fh,callback=&PL_sv_undef)	699	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	700	PROTOTYPE: $;$
1141	ALIAS:	701	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	702	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	703	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	704	PPCODE:
1146	{	705	{
		706	int fd = extract_fd (fh, 0);
1147	dREQ;	707	dREQ;
1148		708
1149	req->type = ix;	709	req->type = ix;
1150	req->fh = newSVsv (fh);	710	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	711	req->int1 = fd;
1152		712
1153	REQ_SEND (req);	713	REQ_SEND (req);
1154	}	714	}
1155		715
1156	void	716	void
		717	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		718	PROTOTYPE: $$$$;$
		719	PPCODE:
		720	{
		721	int fd = extract_fd (fh, 0);
		722	dREQ;
		723
		724	req->type = EIO_SYNC_FILE_RANGE;
		725	req->sv1 = newSVsv (fh);
		726	req->int1 = fd;
		727	req->offs = offset;
		728	req->size = nbytes;
		729	req->int2 = flags;
		730
		731	REQ_SEND (req);
		732	}
		733
		734	void
		735	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		736	PROTOTYPE: $;$
		737	PPCODE:
		738	{
		739	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		740	int fd = extract_fd (fh, 0);
		741	dREQ;
		742
		743	if (close_pipe < 0)
		744	{
		745	int pipefd [2];
		746
		747	if (pipe (pipefd) < 0
		748	|| close (pipefd [1]) < 0
		749	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		750	abort (); /*D*/
		751
		752	close_pipe = pipefd [0];
		753	}
		754
		755	req->type = EIO_DUP2;
		756	req->int1 = close_pipe;
		757	req->sv2 = newSVsv (fh);
		758	req->int2 = fd;
		759
		760	REQ_SEND (req);
		761	}
		762
		763	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	764	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	765	ALIAS:
1165	aio_read = REQ_READ	766	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	767	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	768	PROTOTYPE: $$$$$;$
1168	PPCODE:	769	PPCODE:
1169	{	770	{
1170	aio_req req;
1171	STRLEN svlen;	771	STRLEN svlen;
		772	int fd = extract_fd (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	773	char *svptr = SvPVbyte (data, svlen);
1173		774	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		775
1177	if (dataoffset < 0)	776	if (dataoffset < 0)
1178	dataoffset += svlen;	777	dataoffset += svlen;
1179		778
1180	if (dataoffset < 0 || dataoffset > svlen)	779	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	780	croak ("dataoffset outside of data scalar");
1182		781
1183	if (ix == REQ_WRITE)	782	if (ix == EIO_WRITE)
1184	{	783	{
1185	/* write: check length and adjust. */	784	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	785	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	786	len = svlen - dataoffset;
1188	}	787	}
1189	else	788	else
1190	{	789	{
1191	/* read: grow scalar as necessary */	790	/* read: check type and grow scalar as necessary */
		791	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	792	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	793	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		794
1198	{	795	{
1199	dREQ;	796	dREQ;
1200		797
1201	req->type = ix;	798	req->type = ix;
1202	req->fh = newSVsv (fh);	799	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	800	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	801	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	802	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	803	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	804	req->ptr2 = (char *)svptr + dataoffset;
		805	req->stroffset = dataoffset;
1209		806
1210	if (!SvREADONLY (data))	807	if (!SvREADONLY (data))
1211	{	808	{
1212	SvREADONLY_on (data);	809	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	810	req->flags |= FLAG_SV2_RO_OFF;
1214	}	811	}
1215		812
1216	REQ_SEND;	813	REQ_SEND;
1217	}	814	}
1218	}	815	}
1219		816
1220	void	817	void
		818	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		819	PROTOTYPE: $$;$
		820	PPCODE:
		821	{
		822	SV *data;
		823	dREQ;
		824
		825	req->type = EIO_READLINK;
		826	req->sv1 = newSVsv (path);
		827	req->ptr1 = SvPVbyte_nolen (req->sv1);
		828
		829	REQ_SEND;
		830	}
		831
		832	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	833	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: $$$$;$	834	PROTOTYPE: $$$$;$
1228	PPCODE:	835	PPCODE:
1229	{	836	{
		837	int ifd = extract_fd (in_fh , 0);
		838	int ofd = extract_fd (out_fh, 0);
1230	dREQ;	839	dREQ;
1231		840
1232	req->type = REQ_SENDFILE;	841	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	842	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	843	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	844	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	845	req->int2 = ifd;
1237	req->offset = in_offset;	846	req->offs = in_offset;
1238	req->length = length;	847	req->size = length;
1239		848
1240	REQ_SEND;	849	REQ_SEND;
1241	}	850	}
1242		851
1243	void	852	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	853	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	854	PROTOTYPE: $$$;$
1250	PPCODE:	855	PPCODE:
1251	{	856	{
		857	int fd = extract_fd (fh, 0);
1252	dREQ;	858	dREQ;
1253		859
1254	req->type = REQ_READAHEAD;	860	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	861	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	862	req->int1 = fd;
1257	req->offset = offset;	863	req->offs = offset;
1258	req->length = length;	864	req->size = length;
1259		865
1260	REQ_SEND;	866	REQ_SEND;
1261	}	867	}
1262		868
1263	void	869	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	870	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	871	ALIAS:
1268	aio_stat = REQ_STAT	872	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	873	aio_lstat = EIO_LSTAT
1270	PPCODE:	874	PPCODE:
1271	{	875	{
1272	dREQ;	876	dREQ;
1273		877
1274	New (0, req->statdata, 1, Stat_t);	878	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		879
1281	if (SvPOK (fh_or_path))	880	if (SvPOK (req->sv1))
1282	{	881	{
1283	req->type = ix;	882	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	883	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	884	}
1287	else	885	else
1288	{	886	{
1289	req->type = REQ_FSTAT;	887	req->type = EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	888	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	889	}
1293		890
1294	REQ_SEND;	891	REQ_SEND;
1295	}	892	}
1296		893
1297	void	894	void
		895	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		896	PPCODE:
		897	{
		898	dREQ;
		899
		900	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		901	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		902	req->sv1 = newSVsv (fh_or_path);
		903
		904	if (SvPOK (req->sv1))
		905	{
		906	req->type = EIO_UTIME;
		907	req->ptr1 = SvPVbyte_nolen (req->sv1);
		908	}
		909	else
		910	{
		911	req->type = EIO_FUTIME;
		912	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		913	}
		914
		915	REQ_SEND;
		916	}
		917
		918	void
		919	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		920	PPCODE:
		921	{
		922	dREQ;
		923
		924	req->sv1 = newSVsv (fh_or_path);
		925	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		926
		927	if (SvPOK (req->sv1))
		928	{
		929	req->type = EIO_TRUNCATE;
		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
		931	}
		932	else
		933	{
		934	req->type = EIO_FTRUNCATE;
		935	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		936	}
		937
		938	REQ_SEND;
		939	}
		940
		941	void
		942	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		943	ALIAS:
		944	aio_chmod = EIO_CHMOD
		945	aio_mkdir = EIO_MKDIR
		946	PPCODE:
		947	{
		948	dREQ;
		949
		950	req->int2 = mode;
		951	req->sv1 = newSVsv (fh_or_path);
		952
		953	if (SvPOK (req->sv1))
		954	{
		955	req->type = ix;
		956	req->ptr1 = SvPVbyte_nolen (req->sv1);
		957	}
		958	else
		959	{
		960	req->type = EIO_FCHMOD;
		961	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		962	}
		963
		964	REQ_SEND;
		965	}
		966
		967	void
		968	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		969	PPCODE:
		970	{
		971	dREQ;
		972
		973	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		974	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		975	req->sv1 = newSVsv (fh_or_path);
		976
		977	if (SvPOK (req->sv1))
		978	{
		979	req->type = EIO_CHOWN;
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	}
		982	else
		983	{
		984	req->type = EIO_FCHOWN;
		985	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		986	}
		987
		988	REQ_SEND;
		989	}
		990
		991	void
		992	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		993	PPCODE:
		994	{
		995	dREQ;
		996
		997	req->type = EIO_READDIR;
		998	req->sv1 = newSVsv (pathname);
		999	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1000	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1001
		1002	if (flags & EIO_READDIR_DENTS)
		1003	req->int1 |= EIO_READDIR_CUSTOM2;
		1004
		1005	REQ_SEND;
		1006	}
		1007
		1008	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1009	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1010	ALIAS:
1302	aio_unlink = REQ_UNLINK	1011	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1012	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1013	aio_readdir = EIO_READDIR
1305	PPCODE:	1014	PPCODE:
1306	{	1015	{
1307	dREQ;	1016	dREQ;
1308		1017
1309	req->type = ix;	1018	req->type = ix;
1310	req->data = newSVsv (pathname);	1019	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1020	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1021
1313	REQ_SEND;	1022	REQ_SEND;
1314	}	1023	}
1315		1024
1316	void	1025	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1027	ALIAS:
1322	aio_link = REQ_LINK	1028	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1029	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1030	aio_rename = EIO_RENAME
1325	PPCODE:	1031	PPCODE:
1326	{	1032	{
1327	dREQ;	1033	dREQ;
1328		1034
1329	req->type = ix;	1035	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1036	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1037	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1038	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1039	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1040
1335	REQ_SEND;	1041	REQ_SEND;
1336	}	1042	}
1337		1043
1338	void	1044	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1045	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1046	PPCODE:
1343	{	1047	{
1344	dREQ;	1048	dREQ;
1345		1049
1346	req->type = REQ_BUSY;	1050	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1051	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1053	req->int2 = (mode_t)mode;
		1054	req->offs = dev;
		1055
1350	REQ_SEND;	1056	REQ_SEND;
1351	}	1057	}
1352		1058
1353	void	1059	void
		1060	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1061	PPCODE:
		1062	{
		1063	dREQ;
		1064
		1065	req->type = EIO_BUSY;
		1066	req->nv1 = delay < 0. ? 0. : delay;
		1067
		1068	REQ_SEND;
		1069	}
		1070
		1071	void
1354	aio_group (callback=&PL_sv_undef)	1072	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1073	PROTOTYPE: ;$
1357	PPCODE:	1074	PPCODE:
1358	{	1075	{
1359	dREQ;	1076	dREQ;
1360		1077
1361	req->type = REQ_GROUP;	1078	req->type = EIO_GROUP;
		1079
1362	req_send (req);	1080	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1081	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	1082	}
1366		1083
1367	void	1084	void
1368	aio_nop (callback=&PL_sv_undef)	1085	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1086	ALIAS:
		1087	aio_nop = EIO_NOP
		1088	aio_sync = EIO_SYNC
1370	PPCODE:	1089	PPCODE:
1371	{	1090	{
1372	dREQ;	1091	dREQ;
1373		1092
1374	req->type = REQ_NOP;	1093	req->type = ix;
1375		1094
1376	REQ_SEND;	1095	REQ_SEND;
1377	}	1096	}
1378		1097
1379	void	1098	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1099	aioreq_pri (int pri = 0)
1381	CODE:	1100	PROTOTYPE: ;$
		1101	CODE:
		1102	RETVAL = next_pri;
		1103	if (items > 0)
		1104	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1105	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1106	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1107	next_pri = pri;
		1108	}
		1109	OUTPUT:
		1110	RETVAL
1385		1111
1386	void	1112	void
1387	aioreq_nice (int nice = 0)	1113	aioreq_nice (int nice = 0)
1388	CODE:	1114	CODE:
1389	nice = next_pri - nice;	1115	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1116	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1117	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1118	next_pri = nice;
1393		1119
1394	void	1120	void
1395	flush ()	1121	flush ()
1396	PROTOTYPE:	1122	PROTOTYPE:
1397	CODE:	1123	CODE:
1398	while (nreqs)	1124	while (eio_nreqs ())
1399	{	1125	{
1400	poll_wait ();	1126	poll_wait ();
1401	poll_cb (0);	1127	poll_cb ();
1402	}	1128	}
1403		1129
1404	void	1130	int
1405	poll()	1131	poll()
1406	PROTOTYPE:	1132	PROTOTYPE:
1407	CODE:	1133	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1134	poll_wait ();
1411	poll_cb (0);	1135	RETVAL = poll_cb ();
1412	}	1136	OUTPUT:
		1137	RETVAL
1413		1138
1414	int	1139	int
1415	poll_fileno()	1140	poll_fileno()
1416	PROTOTYPE:	1141	PROTOTYPE:
1417	CODE:	1142	CODE:
…		…
1421		1146
1422	int	1147	int
1423	poll_cb(...)	1148	poll_cb(...)
1424	PROTOTYPE:	1149	PROTOTYPE:
1425	CODE:	1150	CODE:
1426	RETVAL = poll_cb (0);	1151	RETVAL = poll_cb ();
1427	OUTPUT:	1152	OUTPUT:
1428	RETVAL	1153	RETVAL
1429		1154
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void	1155	void
1439	poll_wait()	1156	poll_wait()
1440	PROTOTYPE:	1157	PROTOTYPE:
1441	CODE:	1158	CODE:
1442	if (nreqs)
1443	poll_wait ();	1159	poll_wait ();
1444		1160
1445	int	1161	int
1446	nreqs()	1162	nreqs()
1447	PROTOTYPE:	1163	PROTOTYPE:
1448	CODE:	1164	CODE:
1449	RETVAL = nreqs;	1165	RETVAL = eio_nreqs ();
1450	OUTPUT:	1166	OUTPUT:
1451	RETVAL	1167	RETVAL
1452		1168
		1169	int
		1170	nready()
		1171	PROTOTYPE:
		1172	CODE:
		1173	RETVAL = eio_nready ();
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	int
		1178	npending()
		1179	PROTOTYPE:
		1180	CODE:
		1181	RETVAL = eio_npending ();
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	nthreads()
		1187	PROTOTYPE:
		1188	CODE:
		1189	RETVAL = eio_nthreads ();
		1190	OUTPUT:
		1191	RETVAL
		1192
		1193	int
		1194	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1195	PROTOTYPE: $$$$
		1196	CODE:
		1197	{
		1198	#if _XOPEN_SOURCE >= 600
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	}
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	ssize_t
		1208	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1209	PROTOTYPE: $$$$
		1210	CODE:
		1211	eio_sendfile_sync (ofh, ifh, offset, count);
		1212
		1213	void _on_next_submit (SV *cb)
		1214	CODE:
		1215	SvREFCNT_dec (on_next_submit);
		1216	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1217
1453	PROTOTYPES: DISABLE	1218	PROTOTYPES: DISABLE
1454		1219
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1220	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1221
1457	void	1222	void
1458	cancel (aio_req_ornot req)	1223	cancel (aio_req_ornot req)
1459	CODE:	1224	CODE:
1460	req_cancel (req);	1225	eio_cancel (req);
1461		1226
1462	void	1227	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1228	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1229	PPCODE:
		1230	{
		1231	if (GIMME_V != G_VOID)
		1232	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1233
		1234	if (items > 1)
		1235	{
		1236	SV *cb_cv = get_cb (callback);
		1237
1465	SvREFCNT_dec (req->callback);	1238	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1239	req->callback = SvREFCNT_inc (cb_cv);
		1240	}
		1241	}
1467		1242
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1243	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1244
1470	void	1245	void
1471	add (aio_req grp, ...)	1246	add (aio_req grp, ...)
1472	PPCODE:	1247	PPCODE:
1473	{	1248	{
1474	int i;	1249	int i;
1475	aio_req req;
1476		1250
1477	if (grp->fd == 2)	1251	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1252	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1253
1480	for (i = 1; i < items; ++i )	1254	for (i = 1; i < items; ++i )
1481	{	1255	{
		1256	aio_req req;
		1257
1482	if (GIMME_V != G_VOID)	1258	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1259	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1260
1485	req = SvAIO_REQ (ST (i));	1261	req = SvAIO_REQ (ST (i));
1486		1262
1487	if (req)	1263	if (req)
1488	{	1264	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	}	1265	}
1501	}	1266	}
1502		1267
1503	void	1268	void
1504	cancel_subs (aio_req_ornot req)	1269	cancel_subs (aio_req_ornot req)
…		…
1508	void	1273	void
1509	result (aio_req grp, ...)	1274	result (aio_req grp, ...)
1510	CODE:	1275	CODE:
1511	{	1276	{
1512	int i;	1277	int i;
		1278	AV *av;
		1279
		1280	grp->errorno = errno;
		1281
1513	AV *av = newAV ();	1282	av = newAV ();
		1283	av_extend (av, items - 1);
1514		1284
1515	for (i = 1; i < items; ++i )	1285	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1286	av_push (av, newSVsv (ST (i)));
1517		1287
1518	SvREFCNT_dec (grp->data);	1288	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1289	grp->sv1 = (SV *)av;
1520	}	1290	}
		1291
		1292	void
		1293	errno (aio_req grp, int errorno = errno)
		1294	CODE:
		1295	grp->errorno = errorno;
1521		1296
1522	void	1297	void
1523	limit (aio_req grp, int limit)	1298	limit (aio_req grp, int limit)
1524	CODE:	1299	CODE:
1525	grp->fd2 = limit;	1300	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1301
1528	void	1302	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1303	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1304	CODE:
1531	{	1305	{
1532	SvREFCNT_dec (grp->fh2);	1306	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1307	grp->sv2 = newSVsv (callback);
		1308	grp->feed = aio_grp_feed;
1534		1309
1535	if (grp->fd2 <= 0)	1310	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1311	grp->int2 = 2;
1537		1312
1538	aio_grp_feed (grp);	1313	eio_grp_limit (grp, grp->int2);
1539	}	1314	}
1540		1315

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