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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC vs.
Revision 1.151 by root, Tue Jul 14 00:13:36 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	/* perl namespace pollution */
33	# if __linux	21	#undef VERSION
34	# include <sys/sendfile.h>	22
35	# elif __freebsd	23	#ifdef _WIN32
36	# include <sys/socket.h>	24
37	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
38	# elif __hpux	26	# undef malloc
39	# include <sys/socket.h>	27	# undef free
40	# elif __solaris /* not yet */	28
41	# 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
42	# else	61	#else
43	# error sendfile support requested but not available	62
44	# 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
45	#endif	70	#endif
46		71
47	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
48	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
49	# 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
50	#endif	89	#endif
51		90
52	#if __ia64	91	/*****************************************************************************/
53	# define STACKSIZE 65536	92
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	93	#if __GNUC__ >= 3
55	# define STACKSIZE PTHREAD_STACK_MIN	94	# define expect(expr,value) __builtin_expect ((expr),(value))
56	#else	95	#else
57	# define STACKSIZE 16384	96	# define expect(expr,value) (expr)
58	#endif	97	#endif
59		98
60	/* buffer size for various temporary buffers */	99	#define expect_false(expr) expect ((expr) != 0, 0)
61	#define AIO_BUFSIZE 65536	100	#define expect_true(expr) expect ((expr) != 0, 1)
62		101
63	#define dBUF \	102	/*****************************************************************************/
64	char *aio_buf; \
65	LOCK (wrklock); \
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		103
71	enum {	104	static HV *stash;
72	REQ_QUIT,	105	typedef SV SV8; /* byte-sv, used for argument-checking */
73	REQ_OPEN, REQ_CLOSE,	106	typedef int aio_rfd; /* read file desriptor */
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,	107	typedef int aio_wfd; /* write file descriptor */
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		108
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		111
88	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;	113	SV *callback; \
93	SV *fh, *fh2;	114	SV *sv1, *sv2; \
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;	115	STRLEN stroffset; \
101	int type;	116	SV *self;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105		117
106	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
107	unsigned char pri;
108		119
109	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
111	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
112		151
113	enum {	152	enum {
114	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
115	};	154	};
116		155
		156	#include "libeio/eio.c"
		157
117	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
119		160
120	enum {	161	static SV *on_next_submit;
121	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;	163	static int max_outstanding;
134	static int respipe [2];
135		164
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141		166
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	167	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	168	static void req_cancel (aio_req req);
		169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	char buf [4];
		180	while (respipe_read (respipe [0], buf, 4) == 4)
		181	;
		182	}
246		183
247	/* must be called at most once */	184	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
249	{	186	{
250	if (!req->self)	187	if (!req->self)
…		…
268	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	206	}
270		207
271	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
272	{	209	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
274	{	211	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	212	dSP;
280		213
281	ENTER;	214	ENTER;
282	SAVETMPS;	215	SAVETMPS;
283	PUSHMARK (SP);	216	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
285	PUTBACK;	218	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	220	SPAGAIN;
288	FREETMPS;	221	FREETMPS;
289	LEAVE;	222	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	223	}
300	}	224	}
301		225
302	static void aio_grp_dec (aio_req grp)	226	static void req_submit (eio_req *req)
303	{	227	{
304	--grp->length;	228	eio_submit (req);
305		229
306	/* call feeder, if applicable */	230	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	231	{
312	req_invoke (grp);	232	dSP;
313	req_free (grp);	233	SV *cb = sv_2mortal (on_next_submit);
		234
		235	on_next_submit = 0;
		236
		237	PUSHMARK (SP);
		238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
314	}	240	}
315	}	241	}
316		242
317	static void poll_wait ()	243	static int req_invoke (eio_req *req)
318	{	244	{
319	fd_set rfd;	245	dSP;
320		246
321	while (nreqs)	247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
322	{	251	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;
345
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347	{
348	errno = req->errorno;
349
350	ENTER;	252	ENTER;
351	SAVETMPS;	253	SAVETMPS;
352	PUSHMARK (SP);	254	PUSHMARK (SP);
353	EXTEND (SP, 1);	255	EXTEND (SP, 1);
354		256
355	switch (req->type)	257	switch (req->type)
356	{	258	{
357	case REQ_READDIR:	259	case EIO_READDIR:
358	{	260	{
359	SV *rv = &PL_sv_undef;	261	SV *rv = &PL_sv_undef;
360		262
361	if (req->result >= 0)	263	if (req->result >= 0)
362	{	264	{
363	int i;	265	int i;
364	char *buf = req->data2ptr;	266	char *names = (char *)req->ptr2;
		267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	268	AV *av = newAV ();
366		269
367	av_extend (av, req->result - 1);	270	av_extend (av, req->result - 1);
368		271
369	for (i = 0; i < req->result; ++i)	272	for (i = 0; i < req->result; ++i)
370	{	273	{
371	SV *sv = newSVpv (buf, 0);	274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		277
		278	if (req->int1 & EIO_READDIR_CUSTOM2)
		279	{
		280	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		281	AV *avent = newAV ();
		282
		283	av_extend (avent, 2);
		284
		285	if (!sv_type [ent->type])
		286	{
		287	sv_type [ent->type] = newSViv (ent->type);
		288	SvREADONLY_on (sv_type [ent->type]);
		289	}
		290
		291	av_store (avent, 0, namesv);
		292	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		293	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		294
		295	av_store (av, i, newRV_noinc ((SV *)avent));
		296	}
		297	else
373	av_store (av, i, sv);	298	av_store (av, i, namesv);
		299
		300	++ent;
		301	}
		302	else
		303	{
		304	SV *name = newSVpv (names, 0);
		305	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	306	names += SvCUR (name) + 1;
		307	}
375	}	308	}
376		309
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	310	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	311	}
379		312
380	PUSHs (rv);	313	PUSHs (rv);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM1)
		316	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	317	}
382	break;	318	break;
383		319
384	case REQ_OPEN:	320	case EIO_OPEN:
385	{	321	{
386	/* convert fd to fh */	322	/* convert fd to fh */
387	SV *fh;	323	SV *fh = &PL_sv_undef;
388		324
389	PUSHs (sv_2mortal (newSViv (req->result)));	325	if (req->result >= 0)
390	PUTBACK;	326	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	327	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	328	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		329	char sym [64];
		330	int symlen;
		331
		332	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		333	gv_init (gv, stash, sym, symlen, 0);
393		334
394	fh = SvREFCNT_inc (POPs);	335	symlen = snprintf (
		336	sym,
		337	sizeof (sym),
		338	"%s&=%d",
		339	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		340	(int)req->result
		341	);
395		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
396	PUSHMARK (SP);	347	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	348	}
399	break;	349	break;
400		350
401	case REQ_GROUP:	351	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	352	req->int1 = 2; /* mark group as finished */
403		353
404	if (req->data)	354	if (req->sv1)
405	{	355	{
406	int i;	356	int i;
407	AV *av = (AV *)req->data;	357	AV *av = (AV *)req->sv1;
408		358
409	EXTEND (SP, AvFILL (av) + 1);	359	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	360	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	361	PUSHs (*av_fetch (av, i, 0));
412	}	362	}
413	break;	363	break;
414		364
415	case REQ_NOP:	365	case EIO_NOP:
416	case REQ_BUSY:	366	case EIO_BUSY:
417	break;	367	break;
		368
		369	case EIO_READLINK:
		370	if (req->result > 0)
		371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		372	break;
		373
		374	case EIO_STAT:
		375	case EIO_LSTAT:
		376	case EIO_FSTAT:
		377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		378	PL_laststatval = req->result;
		379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		380	PUSHs (sv_2mortal (newSViv (req->result)));
		381	break;
		382
		383	case EIO_READ:
		384	{
		385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
		391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
418		397
419	default:	398	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	399	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	400	break;
422	}	401	}
423		402
		403	errno = req->errorno;
424		404
425	PUTBACK;	405	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	407	SPAGAIN;
428		408
429	FREETMPS;	409	FREETMPS;
430	LEAVE;	410	LEAVE;
		411
		412	PUTBACK;
431	}	413	}
432		414
433	if (req->grp)	415	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	416	}
453		417
454	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
455	{	419	{
456	if (req->self)	420	if (req->self)
457	{	421	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
460	}	424	}
461		425
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		429
471	Safefree (req);	430	Safefree (req);
472	}	431	}
473		432
474	static void req_cancel_subs (aio_req grp)	433	static void req_cancel_subs (aio_req grp)
475	{	434	{
476	aio_req sub;	435	aio_req sub;
477		436
478	if (grp->type != REQ_GROUP)	437	if (grp->type != EIO_GROUP)
479	return;	438	return;
480		439
481	SvREFCNT_dec (grp->fh2);	440	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	441	grp->sv2 = 0;
483		442
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	443	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	444	}
487		445
488	static void req_cancel (aio_req req)	446	#ifdef USE_SOCKETS_AS_HANDLES
489	{	447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
490	req->flags |= FLAG_CANCELLED;	448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
491		451
492	req_cancel_subs (req);	452	static void
493	}	453	create_respipe (void)
		454	{
		455	int old_readfd = respipe [0];
494		456
		457	if (respipe [1] >= 0)
		458	respipe_close (TO_SOCKET (respipe [1]));
		459
		460	#ifdef _WIN32
		461	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		462	#else
		463	if (pipe (respipe))
		464	#endif
		465	croak ("unable to initialize result pipe");
		466
		467	if (old_readfd >= 0)
		468	{
		469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		470	croak ("unable to initialize result pipe(2)");
		471
		472	respipe_close (respipe [0]);
		473	respipe [0] = old_readfd;
		474	}
		475
		476	#ifdef _WIN32
		477	int arg = 1;
		478	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		479	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		480	#else
		481	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		482	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		483	#endif
		484	croak ("unable to initialize result pipe(3)");
		485
		486	respipe_osf [0] = TO_SOCKET (respipe [0]);
		487	respipe_osf [1] = TO_SOCKET (respipe [1]);
		488	}
		489
		490	static void poll_wait (void)
		491	{
		492	fd_set rfd;
		493
		494	while (eio_nreqs ())
		495	{
		496	int size;
		497
		498	X_LOCK (reslock);
		499	size = res_queue.size;
		500	X_UNLOCK (reslock);
		501
		502	if (size)
		503	return;
		504
		505	etp_maybe_start_thread ();
		506
		507	FD_ZERO (&rfd);
		508	FD_SET (respipe [0], &rfd);
		509
		510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		511	}
		512	}
		513
495	static int poll_cb ()	514	static int poll_cb (void)
496	{	515	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	516	for (;;)
503	{	517	{
504	LOCK (reslock);	518	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		519
507	if (req)	520	if (res > 0)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;	521	croak (0);
522		522
523	--nreqs;	523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
524		525
525	if (req->type == REQ_QUIT)	526	poll_wait ();
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	527	}
554
555	return count;
556	}	528	}
557		529
558	static void *aio_proc(void *arg);
559
560	static void start_thread (void)	530	static void atfork_child (void)
561	{	531	{
562	sigset_t fullsigset, oldsigset;	532	create_respipe ();
563	pthread_attr_t attr;
564
565	worker *wrk = calloc (1, sizeof (worker));
566
567	if (!wrk)
568	croak ("unable to allocate worker thread data");
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{
581	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;
585	started++;
586	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}	533	}
593		534
594	static void req_send (aio_req req)	535	static SV *
		536	get_cb (SV *cb_sv)
595	{	537	{
596	while (started < wanted && nreqs >= started)	538	HV *st;
597	start_thread ();	539	GV *gvp;
		540	CV *cv;
598		541
599	++nreqs;	542	if (!SvOK (cb_sv))
600
601	LOCK (reqlock);
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605
606	if (nreqs > max_outstanding)
607	for (;;)
608	{
609	poll_cb ();
610
611	if (nreqs <= max_outstanding)
612	break;
613
614	poll_wait ();
615	}
616	}
617
618	static void end_thread (void)
619	{
620	aio_req req;
621
622	Newz (0, req, 1, aio_cb);
623
624	req->type = REQ_QUIT;
625	req->pri = PRI_MAX + PRI_BIAS;
626
627	req_send (req);
628	}
629
630	static void min_parallel (int nthreads)
631	{
632	if (wanted < nthreads)
633	wanted = nthreads;
634	}
635
636	static void max_parallel (int nthreads)
637	{
638	int cur = started;
639
640	if (wanted > nthreads)
641	wanted = nthreads;
642
643	while (cur > wanted)
644	{
645	end_thread ();
646	cur--;
647	}
648
649	while (started > wanted)
650	{
651	poll_wait ();
652	poll_cb ();
653	}
654	}
655
656	static void create_pipe ()
657	{
658	if (pipe (respipe))
659	croak ("unable to initialize result pipe");
660
661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
662	croak ("cannot set result pipe to nonblocking mode");
663
664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
665	croak ("cannot set result pipe to nonblocking mode");
666	}
667
668	/*****************************************************************************/
669	/* work around various missing functions */
670
671	#if !HAVE_PREADWRITE
672	# define pread aio_pread
673	# define pwrite aio_pwrite
674
675	/*
676	* make our pread/pwrite safe against themselves, but not against
677	* normal read/write by using a mutex. slows down execution a lot,
678	* but that's your problem, not mine.
679	*/
680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681
682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
683	{
684	ssize_t res;
685	off_t ooffset;
686
687	LOCK (preadwritelock);
688	ooffset = lseek (fd, 0, SEEK_CUR);
689	lseek (fd, offset, SEEK_SET);
690	res = read (fd, buf, count);
691	lseek (fd, ooffset, SEEK_SET);
692	UNLOCK (preadwritelock);
693
694	return res;
695	}
696
697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
698	{
699	ssize_t res;
700	off_t ooffset;
701
702	LOCK (preadwritelock);
703	ooffset = lseek (fd, 0, SEEK_CUR);
704	lseek (fd, offset, SEEK_SET);
705	res = write (fd, buf, count);
706	lseek (fd, offset, SEEK_SET);
707	UNLOCK (preadwritelock);
708
709	return res;
710	}
711	#endif
712
713	#if !HAVE_FDATASYNC
714	# define fdatasync fsync
715	#endif
716
717	#if !HAVE_READAHEAD
718	# define readahead aio_readahead
719
720	static ssize_t readahead (int fd, off_t offset, size_t count)
721	{
722	dBUF;
723
724	while (count > 0)
725	{
726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
727
728	pread (fd, aio_buf, len, offset);
729	offset += len;
730	count -= len;
731	}
732
733	errno = 0;
734	}
735	#endif
736
737	#if !HAVE_READDIR_R
738	# define readdir_r aio_readdir_r
739
740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
741
742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
743	{
744	struct dirent *e;
745	int errorno;
746
747	LOCK (readdirlock);
748
749	e = readdir (dirp);
750	errorno = errno;
751
752	if (e)
753	{
754	*res = ent;
755	strcpy (ent->d_name, e->d_name);
756	}
757	else
758	*res = 0;
759
760	UNLOCK (readdirlock);
761
762	errno = errorno;
763	return e ? 0 : -1;
764	}
765	#endif
766
767	/* sendfile always needs emulation */
768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
769	{
770	ssize_t res;
771
772	if (!count)
773	return 0;	543	return 0;
774		544
775	#if HAVE_SENDFILE	545	cv = sv_2cv (cb_sv, &st, &gvp, 0);
776	# if __linux
777	res = sendfile (ofd, ifd, &offset, count);
778		546
779	# elif __freebsd	547	if (!cv)
780	/*	548	croak ("IO::AIO callback must be undef or a CODE reference");
781	* Of course, the freebsd sendfile is a dire hack with no thoughts
782	* wasted on making it similar to other I/O functions.
783	*/
784	{
785	off_t sbytes;
786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787		549
788	if (res < 0 && sbytes)	550	return (SV *)cv;
789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
790	res = sbytes;
791	}
792
793	# elif __hpux
794	res = sendfile (ofd, ifd, offset, count, 0, 0);
795
796	# elif __solaris
797	{
798	struct sendfilevec vec;
799	size_t sbytes;
800
801	vec.sfv_fd = ifd;
802	vec.sfv_flag = 0;
803	vec.sfv_off = offset;
804	vec.sfv_len = count;
805
806	res = sendfilev (ofd, &vec, 1, &sbytes);
807
808	if (res < 0 && sbytes)
809	res = sbytes;
810	}
811
812	# endif
813	#else
814	res = -1;
815	errno = ENOSYS;
816	#endif
817
818	if (res < 0
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
820	#if __solaris
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
822	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828
829	res = 0;
830
831	while (count)
832	{
833	ssize_t cnt;
834
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
836
837	if (cnt <= 0)
838	{
839	if (cnt && !res) res = -1;
840	break;
841	}
842
843	cnt = write (ofd, aio_buf, cnt);
844
845	if (cnt <= 0)
846	{
847	if (cnt && !res) res = -1;
848	break;
849	}
850
851	offset += cnt;
852	res += cnt;
853	count -= cnt;
854	}
855	}
856
857	return res;
858	}
859
860	/* read a full directory */
861	static void scandir_ (aio_req req, worker *self)
862	{
863	DIR *dirp;
864	union
865	{
866	struct dirent d;
867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
868	} *u;
869	struct dirent *entp;
870	char *name, *names;
871	int memlen = 4096;
872	int memofs = 0;
873	int res = 0;
874	int errorno;
875
876	LOCK (wrklock);
877	self->dirp = dirp = opendir (req->dataptr);
878	self->dbuf = u = malloc (sizeof (*u));
879	UNLOCK (wrklock);
880
881	req->data2ptr = names = malloc (memlen);
882
883	if (dirp && u && names)
884	for (;;)
885	{
886	errno = 0;
887	readdir_r (dirp, &u->d, &entp);
888
889	if (!entp)
890	break;
891
892	name = entp->d_name;
893
894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
895	{
896	int len = strlen (name) + 1;
897
898	res++;
899
900	while (memofs + len > memlen)
901	{
902	memlen *= 2;
903	LOCK (wrklock);
904	req->data2ptr = names = realloc (names, memlen);
905	UNLOCK (wrklock);
906
907	if (!names)
908	break;
909	}
910
911	memcpy (names + memofs, name, len);
912	memofs += len;
913	}
914	}
915
916	if (errno)
917	res = -1;
918
919	req->result = res;
920	}
921
922	/*****************************************************************************/
923
924	static void *aio_proc (void *thr_arg)
925	{
926	aio_req req;
927	int type;
928	worker *self = (worker *)thr_arg;
929
930	do
931	{
932	LOCK (reqlock);
933
934	for (;;)
935	{
936	self->req = req = reqq_shift (&req_queue);
937
938	if (req)
939	break;
940
941	pthread_cond_wait (&reqwait, &reqlock);
942	}
943
944	UNLOCK (reqlock);
945
946	errno = 0; /* strictly unnecessary */
947	type = req->type; /* remember type for QUIT check */
948
949	if (!(req->flags & FLAG_CANCELLED))
950	switch (type)
951	{
952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
954
955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
957
958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
961
962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
963	case REQ_CLOSE: req->result = close (req->fd); break;
964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
969
970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
971	case REQ_FSYNC: req->result = fsync (req->fd); break;
972	case REQ_READDIR: scandir_ (req, self); break;
973
974	case REQ_BUSY:
975	{
976	struct timeval tv;
977
978	tv.tv_sec = req->fd;
979	tv.tv_usec = req->fd2;
980
981	req->result = select (0, 0, 0, 0, &tv);
982	}
983
984	case REQ_GROUP:
985	case REQ_NOP:
986	case REQ_QUIT:
987	break;
988
989	default:
990	req->result = ENOSYS;
991	break;
992	}
993
994	req->errorno = errno;
995
996	LOCK (reslock);
997
998	if (!reqq_push (&res_queue, req))
999	/* write a dummy byte to the pipe so fh becomes ready */
1000	write (respipe [1], &respipe, 1);
1001
1002	self->req = 0;
1003	worker_clear (self);
1004
1005	UNLOCK (reslock);
1006	}
1007	while (type != REQ_QUIT);
1008
1009	LOCK (wrklock);
1010	worker_free (self);
1011	UNLOCK (wrklock);
1012
1013	return 0;
1014	}
1015
1016	/*****************************************************************************/
1017
1018	static void atfork_prepare (void)
1019	{
1020	LOCK (wrklock);
1021	LOCK (reqlock);
1022	LOCK (reslock);
1023	#if !HAVE_PREADWRITE
1024	LOCK (preadwritelock);
1025	#endif
1026	#if !HAVE_READDIR_R
1027	LOCK (readdirlock);
1028	#endif
1029	}
1030
1031	static void atfork_parent (void)
1032	{
1033	#if !HAVE_READDIR_R
1034	UNLOCK (readdirlock);
1035	#endif
1036	#if !HAVE_PREADWRITE
1037	UNLOCK (preadwritelock);
1038	#endif
1039	UNLOCK (reslock);
1040	UNLOCK (reqlock);
1041	UNLOCK (wrklock);
1042	}
1043
1044	static void atfork_child (void)
1045	{
1046	aio_req prv;
1047
1048	while (prv = reqq_shift (&req_queue))
1049	req_free (prv);
1050
1051	while (prv = reqq_shift (&res_queue))
1052	req_free (prv);
1053
1054	while (wrk_first.next != &wrk_first)
1055	{
1056	worker *wrk = wrk_first.next;
1057
1058	if (wrk->req)
1059	req_free (wrk->req);
1060
1061	worker_clear (wrk);
1062	worker_free (wrk);
1063	}
1064
1065	started = 0;
1066	nreqs = 0;
1067
1068	close (respipe [0]);
1069	close (respipe [1]);
1070	create_pipe ();
1071
1072	atfork_parent ();
1073	}	551	}
1074		552
1075	#define dREQ \	553	#define dREQ \
		554	SV *cb_cv; \
1076	aio_req req; \	555	aio_req req; \
1077	int req_pri = next_pri; \	556	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \	557	next_pri = EIO_PRI_DEFAULT; \
1079	\	558	\
1080	if (SvOK (callback) && !SvROK (callback)) \	559	cb_cv = get_cb (callback); \
1081	croak ("callback must be undef or of reference type"); \
1082	\	560	\
1083	Newz (0, req, 1, aio_cb); \	561	Newz (0, req, 1, eio_req); \
1084	if (!req) \	562	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \	563	croak ("out of memory during eio_req allocation"); \
1086	\	564	\
1087	req->callback = newSVsv (callback); \	565	req->callback = SvREFCNT_inc (cb_cv); \
1088	req->pri = req_pri	566	req->pri = req_pri
1089		567
1090	#define REQ_SEND \	568	#define REQ_SEND \
		569	PUTBACK; \
1091	req_send (req); \	570	req_submit (req); \
		571	SPAGAIN; \
1092	\	572	\
1093	if (GIMME_V != G_VOID) \	573	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));	574	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1095		575
1096	MODULE = IO::AIO PACKAGE = IO::AIO	576	MODULE = IO::AIO PACKAGE = IO::AIO
1097		577
1098	PROTOTYPES: ENABLE	578	PROTOTYPES: ENABLE
1099		579
1100	BOOT:	580	BOOT:
1101	{	581	{
		582	static const struct {
		583	const char *name;
		584	IV iv;
		585	} *civ, const_iv[] = {
		586	# define const_iv(name, value) { # name, (IV) value },
		587	# define const_eio(name) { # name, (IV) EIO_ ## name },
		588	const_iv (EXDEV , EXDEV)
		589	const_iv (ENOSYS , ENOSYS)
		590	const_iv (O_RDONLY, O_RDONLY)
		591	const_iv (O_WRONLY, O_WRONLY)
		592	const_iv (O_CREAT , O_CREAT)
		593	const_iv (O_TRUNC , O_TRUNC)
		594	#ifndef _WIN32
		595	const_iv (S_IFIFO , S_IFIFO)
		596	#endif
		597	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		598	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		599	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		600	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		601	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		602	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		603
		604	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		605	const_eio (SYNC_FILE_RANGE_WRITE)
		606	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		607
		608	const_eio (READDIR_DENTS)
		609	const_eio (READDIR_DIRS_FIRST)
		610	const_eio (READDIR_STAT_ORDER)
		611	const_eio (READDIR_FOUND_UNKNOWN)
		612
		613	const_eio (DT_UNKNOWN)
		614	const_eio (DT_FIFO)
		615	const_eio (DT_CHR)
		616	const_eio (DT_DIR)
		617	const_eio (DT_BLK)
		618	const_eio (DT_REG)
		619	const_eio (DT_LNK)
		620	const_eio (DT_SOCK)
		621	const_eio (DT_WHT)
		622	};
		623
1102	HV *stash = gv_stashpv ("IO::AIO", 1);	624	stash = gv_stashpv ("IO::AIO", 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106		625
		626	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		627	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		628
1107	create_pipe ();	629	create_respipe ();
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109	}
1110		630
		631	if (eio_init (want_poll, done_poll) < 0)
		632	croak ("IO::AIO: unable to initialise eio library");
		633
		634	/* atfork child called in fifo order, so before eio's handler */
		635	X_THREAD_ATFORK (0, 0, atfork_child);
		636	}
		637
1111	void	638	void
1112	min_parallel (nthreads)	639	max_poll_reqs (int nreqs)
1113	int nthreads
1114	PROTOTYPE: $	640	PROTOTYPE: $
		641	CODE:
		642	eio_set_max_poll_reqs (nreqs);
1115		643
1116	void	644	void
1117	max_parallel (nthreads)	645	max_poll_time (double nseconds)
1118	int nthreads
1119	PROTOTYPE: $	646	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:	647	CODE:
1126	RETVAL = max_outstanding;	648	eio_set_max_poll_time (nseconds);
		649
		650	void
		651	min_parallel (int nthreads)
		652	PROTOTYPE: $
		653	CODE:
		654	eio_set_min_parallel (nthreads);
		655
		656	void
		657	max_parallel (int nthreads)
		658	PROTOTYPE: $
		659	CODE:
		660	eio_set_max_parallel (nthreads);
		661
		662	void
		663	max_idle (int nthreads)
		664	PROTOTYPE: $
		665	CODE:
		666	eio_set_max_idle (nthreads);
		667
		668	void
		669	max_outstanding (int maxreqs)
		670	PROTOTYPE: $
		671	CODE:
1127	max_outstanding = nreqs;	672	max_outstanding = maxreqs;
1128		673
1129	void	674	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	675	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$	676	PROTOTYPE: $$$;$
1136	PPCODE:	677	PPCODE:
1137	{	678	{
1138	dREQ;	679	dREQ;
1139		680
1140	req->type = REQ_OPEN;	681	req->type = EIO_OPEN;
1141	req->data = newSVsv (pathname);	682	req->sv1 = newSVsv (pathname);
1142	req->dataptr = SvPVbyte_nolen (req->data);	683	req->ptr1 = SvPVbyte_nolen (req->sv1);
1143	req->fd = flags;	684	req->int1 = flags;
1144	req->mode = mode;	685	req->int2 = mode;
1145		686
1146	REQ_SEND;	687	REQ_SEND;
1147	}	688	}
1148		689
1149	void	690	void
1150	aio_close (fh,callback=&PL_sv_undef)	691	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$	692	PROTOTYPE: $;$
1154	ALIAS:	693	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC	694	aio_fsync = EIO_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC	695	aio_fdatasync = EIO_FDATASYNC
1158	PPCODE:	696	PPCODE:
1159	{	697	{
		698	int fd = s_fileno_croak (fh, 0);
1160	dREQ;	699	dREQ;
1161		700
1162	req->type = ix;	701	req->type = ix;
1163	req->fh = newSVsv (fh);	702	req->sv1 = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	703	req->int1 = fd;
1165		704
1166	REQ_SEND (req);	705	REQ_SEND (req);
1167	}	706	}
1168		707
1169	void	708	void
		709	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		710	PROTOTYPE: $$$$;$
		711	PPCODE:
		712	{
		713	int fd = s_fileno_croak (fh, 0);
		714	dREQ;
		715
		716	req->type = EIO_SYNC_FILE_RANGE;
		717	req->sv1 = newSVsv (fh);
		718	req->int1 = fd;
		719	req->offs = offset;
		720	req->size = nbytes;
		721	req->int2 = flags;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
		727	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		728	PROTOTYPE: $;$
		729	PPCODE:
		730	{
		731	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		732	int fd = s_fileno_croak (fh, 0);
		733	dREQ;
		734
		735	if (close_pipe < 0)
		736	{
		737	int pipefd [2];
		738
		739	if (pipe (pipefd) < 0
		740	|| close (pipefd [1]) < 0
		741	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		742	abort (); /*D*/
		743
		744	close_pipe = pipefd [0];
		745	}
		746
		747	req->type = EIO_DUP2;
		748	req->int1 = close_pipe;
		749	req->sv2 = newSVsv (fh);
		750	req->int2 = fd;
		751
		752	REQ_SEND (req);
		753	}
		754
		755	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	756	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1171	SV * fh
1172	UV offset
1173	UV length
1174	SV * data
1175	UV dataoffset
1176	SV * callback
1177	ALIAS:	757	ALIAS:
1178	aio_read = REQ_READ	758	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	759	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$	760	PROTOTYPE: $$$$$;$
1181	PPCODE:	761	PPCODE:
1182	{	762	{
1183	aio_req req;
1184	STRLEN svlen;	763	STRLEN svlen;
		764	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	765	char *svptr = SvPVbyte (data, svlen);
1186		766	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		767
1190	if (dataoffset < 0)	768	if (dataoffset < 0)
1191	dataoffset += svlen;	769	dataoffset += svlen;
1192		770
1193	if (dataoffset < 0 || dataoffset > svlen)	771	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	772	croak ("dataoffset outside of data scalar");
1195		773
1196	if (ix == REQ_WRITE)	774	if (ix == EIO_WRITE)
1197	{	775	{
1198	/* write: check length and adjust. */	776	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	777	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	778	len = svlen - dataoffset;
1201	}	779	}
1202	else	780	else
1203	{	781	{
1204	/* read: grow scalar as necessary */	782	/* read: check type and grow scalar as necessary */
		783	SvUPGRADE (data, SVt_PV);
1205	svptr = SvGROW (data, length + dataoffset);	784	svptr = SvGROW (data, len + dataoffset + 1);
1206	}	785	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		786
1211	{	787	{
1212	dREQ;	788	dREQ;
1213		789
1214	req->type = ix;	790	req->type = ix;
1215	req->fh = newSVsv (fh);	791	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	792	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	793	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	794	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	795	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	796	req->ptr2 = (char *)svptr + dataoffset;
		797	req->stroffset = dataoffset;
1222		798
1223	if (!SvREADONLY (data))	799	if (!SvREADONLY (data))
1224	{	800	{
1225	SvREADONLY_on (data);	801	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	802	req->flags |= FLAG_SV2_RO_OFF;
1227	}	803	}
1228		804
1229	REQ_SEND;	805	REQ_SEND;
1230	}	806	}
1231	}	807	}
1232		808
1233	void	809	void
		810	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		811	PROTOTYPE: $$;$
		812	PPCODE:
		813	{
		814	SV *data;
		815	dREQ;
		816
		817	req->type = EIO_READLINK;
		818	req->sv1 = newSVsv (path);
		819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	825	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1235	SV * out_fh
1236	SV * in_fh
1237	UV in_offset
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$	826	PROTOTYPE: $$$$;$
1241	PPCODE:	827	PPCODE:
1242	{	828	{
		829	int ifd = s_fileno_croak (in_fh , 0);
		830	int ofd = s_fileno_croak (out_fh, 1);
1243	dREQ;	831	dREQ;
1244		832
1245	req->type = REQ_SENDFILE;	833	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	834	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	835	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	836	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	837	req->int2 = ifd;
1250	req->offset = in_offset;	838	req->offs = in_offset;
1251	req->length = length;	839	req->size = length;
1252		840
1253	REQ_SEND;	841	REQ_SEND;
1254	}	842	}
1255		843
1256	void	844	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	845	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$	846	PROTOTYPE: $$$;$
1263	PPCODE:	847	PPCODE:
1264	{	848	{
		849	int fd = s_fileno_croak (fh, 0);
1265	dREQ;	850	dREQ;
1266		851
1267	req->type = REQ_READAHEAD;	852	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	853	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	854	req->int1 = fd;
1270	req->offset = offset;	855	req->offs = offset;
1271	req->length = length;	856	req->size = length;
1272		857
1273	REQ_SEND;	858	REQ_SEND;
1274	}	859	}
1275		860
1276	void	861	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	862	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	863	ALIAS:
1281	aio_stat = REQ_STAT	864	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	865	aio_lstat = EIO_LSTAT
1283	PPCODE:	866	PPCODE:
1284	{	867	{
1285	dREQ;	868	dREQ;
1286		869
1287	New (0, req->statdata, 1, Stat_t);	870	req->sv1 = newSVsv (fh_or_path);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293		871
1294	if (SvPOK (fh_or_path))	872	if (SvPOK (req->sv1))
1295	{	873	{
1296	req->type = ix;	874	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);	875	req->ptr1 = SvPVbyte_nolen (req->sv1);
1299	}	876	}
1300	else	877	else
1301	{	878	{
1302	req->type = REQ_FSTAT;	879	req->type = EIO_FSTAT;
1303	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}	881	}
1306		882
1307	REQ_SEND;	883	REQ_SEND;
1308	}	884	}
1309		885
1310	void	886	void
		887	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		888	PPCODE:
		889	{
		890	dREQ;
		891
		892	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		893	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		894	req->sv1 = newSVsv (fh_or_path);
		895
		896	if (SvPOK (req->sv1))
		897	{
		898	req->type = EIO_UTIME;
		899	req->ptr1 = SvPVbyte_nolen (req->sv1);
		900	}
		901	else
		902	{
		903	req->type = EIO_FUTIME;
		904	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		905	}
		906
		907	REQ_SEND;
		908	}
		909
		910	void
		911	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		912	PPCODE:
		913	{
		914	dREQ;
		915
		916	req->sv1 = newSVsv (fh_or_path);
		917	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		918
		919	if (SvPOK (req->sv1))
		920	{
		921	req->type = EIO_TRUNCATE;
		922	req->ptr1 = SvPVbyte_nolen (req->sv1);
		923	}
		924	else
		925	{
		926	req->type = EIO_FTRUNCATE;
		927	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		928	}
		929
		930	REQ_SEND;
		931	}
		932
		933	void
		934	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		935	ALIAS:
		936	aio_chmod = EIO_CHMOD
		937	aio_mkdir = EIO_MKDIR
		938	PPCODE:
		939	{
		940	dREQ;
		941
		942	req->int2 = mode;
		943	req->sv1 = newSVsv (fh_or_path);
		944
		945	if (SvPOK (req->sv1))
		946	{
		947	req->type = ix;
		948	req->ptr1 = SvPVbyte_nolen (req->sv1);
		949	}
		950	else
		951	{
		952	req->type = EIO_FCHMOD;
		953	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		954	}
		955
		956	REQ_SEND;
		957	}
		958
		959	void
		960	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		961	PPCODE:
		962	{
		963	dREQ;
		964
		965	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		966	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		967	req->sv1 = newSVsv (fh_or_path);
		968
		969	if (SvPOK (req->sv1))
		970	{
		971	req->type = EIO_CHOWN;
		972	req->ptr1 = SvPVbyte_nolen (req->sv1);
		973	}
		974	else
		975	{
		976	req->type = EIO_FCHOWN;
		977	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		978	}
		979
		980	REQ_SEND;
		981	}
		982
		983	void
		984	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		985	PPCODE:
		986	{
		987	dREQ;
		988
		989	req->type = EIO_READDIR;
		990	req->sv1 = newSVsv (pathname);
		991	req->ptr1 = SvPVbyte_nolen (req->sv1);
		992	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		993
		994	if (flags & EIO_READDIR_DENTS)
		995	req->int1 |= EIO_READDIR_CUSTOM2;
		996
		997	REQ_SEND;
		998	}
		999
		1000	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1001	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1002	ALIAS:
1315	aio_unlink = REQ_UNLINK	1003	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1004	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1005	aio_readdir = EIO_READDIR
1318	PPCODE:	1006	PPCODE:
1319	{	1007	{
1320	dREQ;	1008	dREQ;
1321		1009
1322	req->type = ix;	1010	req->type = ix;
1323	req->data = newSVsv (pathname);	1011	req->sv1 = newSVsv (pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1012	req->ptr1 = SvPVbyte_nolen (req->sv1);
1325		1013
1326	REQ_SEND;	1014	REQ_SEND;
1327	}	1015	}
1328		1016
1329	void	1017	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1018	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:	1019	ALIAS:
1335	aio_link = REQ_LINK	1020	aio_link = EIO_LINK
1336	aio_symlink = REQ_SYMLINK	1021	aio_symlink = EIO_SYMLINK
1337	aio_rename = REQ_RENAME	1022	aio_rename = EIO_RENAME
1338	PPCODE:	1023	PPCODE:
1339	{	1024	{
1340	dREQ;	1025	dREQ;
1341		1026
1342	req->type = ix;	1027	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1028	req->sv1 = newSVsv (oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1029	req->ptr1 = SvPVbyte_nolen (req->sv1);
1345	req->data = newSVsv (newpath);	1030	req->sv2 = newSVsv (newpath);
1346	req->dataptr = SvPVbyte_nolen (req->data);	1031	req->ptr2 = SvPVbyte_nolen (req->sv2);
1347		1032
1348	REQ_SEND;	1033	REQ_SEND;
1349	}	1034	}
1350		1035
1351	void	1036	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1037	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1038	PPCODE:
1356	{	1039	{
1357	dREQ;	1040	dREQ;
1358		1041
1359	req->type = REQ_BUSY;	1042	req->type = EIO_MKNOD;
1360	req->fd = delay < 0. ? 0 : delay;	1043	req->sv1 = newSVsv (pathname);
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
1362		1045	req->int2 = (mode_t)mode;
		1046	req->offs = dev;
		1047
1363	REQ_SEND;	1048	REQ_SEND;
1364	}	1049	}
1365		1050
1366	void	1051	void
		1052	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1053	PPCODE:
		1054	{
		1055	dREQ;
		1056
		1057	req->type = EIO_BUSY;
		1058	req->nv1 = delay < 0. ? 0. : delay;
		1059
		1060	REQ_SEND;
		1061	}
		1062
		1063	void
1367	aio_group (callback=&PL_sv_undef)	1064	aio_group (SV *callback=&PL_sv_undef)
1368	SV * callback
1369	PROTOTYPE: ;$	1065	PROTOTYPE: ;$
1370	PPCODE:	1066	PPCODE:
1371	{	1067	{
1372	dREQ;	1068	dREQ;
1373		1069
1374	req->type = REQ_GROUP;	1070	req->type = EIO_GROUP;
		1071
1375	req_send (req);	1072	req_submit (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1073	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1378	}	1074	}
1379		1075
1380	void	1076	void
1381	aio_nop (callback=&PL_sv_undef)	1077	aio_nop (SV *callback=&PL_sv_undef)
1382	SV * callback	1078	ALIAS:
		1079	aio_nop = EIO_NOP
		1080	aio_sync = EIO_SYNC
1383	PPCODE:	1081	PPCODE:
1384	{	1082	{
1385	dREQ;	1083	dREQ;
1386		1084
1387	req->type = REQ_NOP;	1085	req->type = ix;
1388		1086
1389	REQ_SEND;	1087	REQ_SEND;
1390	}	1088	}
1391		1089
1392	void	1090	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1091	aioreq_pri (int pri = 0)
1394	CODE:	1092	PROTOTYPE: ;$
		1093	CODE:
		1094	RETVAL = next_pri;
		1095	if (items > 0)
		1096	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1097	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1098	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1099	next_pri = pri;
		1100	}
		1101	OUTPUT:
		1102	RETVAL
1398		1103
1399	void	1104	void
1400	aioreq_nice (int nice = 0)	1105	aioreq_nice (int nice = 0)
1401	CODE:	1106	CODE:
1402	nice = next_pri - nice;	1107	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1108	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1109	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1110	next_pri = nice;
1406		1111
1407	void	1112	void
1408	flush ()	1113	flush ()
1409	PROTOTYPE:	1114	PROTOTYPE:
1410	CODE:	1115	CODE:
1411	while (nreqs)	1116	while (eio_nreqs ())
1412	{	1117	{
1413	poll_wait ();	1118	poll_wait ();
1414	poll_cb ();	1119	poll_cb ();
1415	}	1120	}
1416		1121
1417	void	1122	int
1418	poll()	1123	poll()
1419	PROTOTYPE:	1124	PROTOTYPE:
1420	CODE:	1125	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();	1126	poll_wait ();
1424	poll_cb ();	1127	RETVAL = poll_cb ();
1425	}	1128	OUTPUT:
		1129	RETVAL
1426		1130
1427	int	1131	int
1428	poll_fileno()	1132	poll_fileno()
1429	PROTOTYPE:	1133	PROTOTYPE:
1430	CODE:	1134	CODE:
…		…
1442		1146
1443	void	1147	void
1444	poll_wait()	1148	poll_wait()
1445	PROTOTYPE:	1149	PROTOTYPE:
1446	CODE:	1150	CODE:
1447	if (nreqs)
1448	poll_wait ();	1151	poll_wait ();
1449		1152
1450	int	1153	int
1451	nreqs()	1154	nreqs()
1452	PROTOTYPE:	1155	PROTOTYPE:
1453	CODE:	1156	CODE:
1454	RETVAL = nreqs;	1157	RETVAL = eio_nreqs ();
1455	OUTPUT:	1158	OUTPUT:
1456	RETVAL	1159	RETVAL
1457		1160
		1161	int
		1162	nready()
		1163	PROTOTYPE:
		1164	CODE:
		1165	RETVAL = eio_nready ();
		1166	OUTPUT:
		1167	RETVAL
		1168
		1169	int
		1170	npending()
		1171	PROTOTYPE:
		1172	CODE:
		1173	RETVAL = eio_npending ();
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	int
		1178	nthreads()
		1179	PROTOTYPE:
		1180	CODE:
		1181	RETVAL = eio_nthreads ();
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1190	RETVAL = posix_fadvise (fh, offset, length, advice);
		1191	#else
		1192	RETVAL = errno = ENOSYS;
		1193	#endif
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	ssize_t
		1198	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1199	PROTOTYPE: $$$$
		1200	CODE:
		1201	eio_sendfile_sync (ofh, ifh, offset, count);
		1202
		1203	void _on_next_submit (SV *cb)
		1204	CODE:
		1205	SvREFCNT_dec (on_next_submit);
		1206	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1207
1458	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
1459		1209
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1211
1462	void	1212	void
1463	cancel (aio_req_ornot req)	1213	cancel (aio_req_ornot req)
1464	CODE:	1214	CODE:
1465	req_cancel (req);	1215	eio_cancel (req);
1466		1216
1467	void	1217	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1218	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1469	CODE:	1219	PPCODE:
		1220	{
		1221	if (GIMME_V != G_VOID)
		1222	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1223
		1224	if (items > 1)
		1225	{
		1226	SV *cb_cv = get_cb (callback);
		1227
1470	SvREFCNT_dec (req->callback);	1228	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1229	req->callback = SvREFCNT_inc (cb_cv);
		1230	}
		1231	}
1472		1232
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1233	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1234
1475	void	1235	void
1476	add (aio_req grp, ...)	1236	add (aio_req grp, ...)
1477	PPCODE:	1237	PPCODE:
1478	{	1238	{
1479	int i;	1239	int i;
1480	aio_req req;
1481		1240
1482	if (grp->fd == 2)	1241	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1242	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1243
1485	for (i = 1; i < items; ++i )	1244	for (i = 1; i < items; ++i )
1486	{	1245	{
		1246	aio_req req;
		1247
1487	if (GIMME_V != G_VOID)	1248	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1249	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1250
1490	req = SvAIO_REQ (ST (i));	1251	req = SvAIO_REQ (ST (i));
1491		1252
1492	if (req)	1253	if (req)
1493	{	1254	eio_grp_add (grp, req);
1494	++grp->length;
1495	req->grp = grp;
1496
1497	req->grp_prev = 0;
1498	req->grp_next = grp->grp_first;
1499
1500	if (grp->grp_first)
1501	grp->grp_first->grp_prev = req;
1502
1503	grp->grp_first = req;
1504	}
1505	}	1255	}
1506	}	1256	}
1507		1257
1508	void	1258	void
1509	cancel_subs (aio_req_ornot req)	1259	cancel_subs (aio_req_ornot req)
…		…
1513	void	1263	void
1514	result (aio_req grp, ...)	1264	result (aio_req grp, ...)
1515	CODE:	1265	CODE:
1516	{	1266	{
1517	int i;	1267	int i;
		1268	AV *av;
		1269
		1270	grp->errorno = errno;
		1271
1518	AV *av = newAV ();	1272	av = newAV ();
		1273	av_extend (av, items - 1);
1519		1274
1520	for (i = 1; i < items; ++i )	1275	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1276	av_push (av, newSVsv (ST (i)));
1522		1277
1523	SvREFCNT_dec (grp->data);	1278	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1279	grp->sv1 = (SV *)av;
1525	}	1280	}
		1281
		1282	void
		1283	errno (aio_req grp, int errorno = errno)
		1284	CODE:
		1285	grp->errorno = errorno;
1526		1286
1527	void	1287	void
1528	limit (aio_req grp, int limit)	1288	limit (aio_req grp, int limit)
1529	CODE:	1289	CODE:
1530	grp->fd2 = limit;	1290	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		1291
1533	void	1292	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1293	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1294	CODE:
1536	{	1295	{
1537	SvREFCNT_dec (grp->fh2);	1296	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1297	grp->sv2 = newSVsv (callback);
		1298	grp->feed = aio_grp_feed;
1539		1299
1540	if (grp->fd2 <= 0)	1300	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1301	grp->int2 = 2;
1542		1302
1543	aio_grp_feed (grp);	1303	eio_grp_limit (grp, grp->int2);
1544	}	1304	}
1545		1305

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