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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.80 by root, Fri Oct 27 19:17:23 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	/* wether word reads are potentially non-atomic.	100	/*****************************************************************************/
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif
77		101
78	/* buffer size for various temporary buffers */	102	static HV *stash;
79	#define AIO_BUFSIZE 65536	103	typedef SV SV8; /* byte-sv, used for argument-checking */
80		104	typedef int aio_rfd; /* read file desriptor */
81	#define dBUF \	105	typedef int aio_wfd; /* write file descriptor */
82	char *aio_buf; \
83	LOCK (wrklock); \
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \
86	if (!aio_buf) \
87	return -1;
88
89	enum {
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		106
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		109
106	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;	111	SV *callback; \
111	SV *fh, *fh2;	112	SV *sv1, *sv2; \
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;	113	STRLEN stroffset; \
119	int type;	114	SV *self;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123		115
124	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
125	unsigned char pri;
126		117
127	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
129	} 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)
130		148
131	enum {	149	enum {
132	FLAG_CANCELLED = 0x01,	150	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
133	};	151	};
134		152
		153	#include "libeio/eio.c"
		154
135	typedef aio_cb *aio_req;	155	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	156	typedef eio_req *aio_req_ornot;
137		157
138	enum {	158	static SV *on_next_submit;
139	PRI_MIN = -4,	159	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	160	static int max_outstanding;
141		161
142	DEFAULT_PRI = 0,	162	static int respipe_osf [2], respipe [2] = { -1, -1 };
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		163
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	164	static void req_destroy (aio_req req);
296	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	}
297		180
298	/* must be called at most once */	181	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	182	static SV *req_sv (aio_req req, const char *klass)
300	{	183	{
301	if (!req->self)	184	if (!req->self)
…		…
319	return mg ? (aio_req)mg->mg_ptr : 0;	202	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	203	}
321		204
322	static void aio_grp_feed (aio_req grp)	205	static void aio_grp_feed (aio_req grp)
323	{	206	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	207	if (grp->sv2 && SvOK (grp->sv2))
325	{	208	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	209	dSP;
331		210
332	ENTER;	211	ENTER;
333	SAVETMPS;	212	SAVETMPS;
334	PUSHMARK (SP);	213	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
336	PUTBACK;	215	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	216	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	217	SPAGAIN;
339	FREETMPS;	218	FREETMPS;
340	LEAVE;	219	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	220	}
351	}	221	}
352		222
353	static void aio_grp_dec (aio_req grp)	223	static void req_submit (eio_req *req)
354	{	224	{
355	--grp->length;	225	eio_submit (req);
356		226
357	/* call feeder, if applicable */	227	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	228	{
363	req_invoke (grp);	229	dSP;
364	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);
365	}	237	}
366	}	238	}
367		239
368	static void req_invoke (aio_req req)	240	static int req_invoke (eio_req *req)
369	{	241	{
370	dSP;	242	dSP;
371		243
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	244	if (req->flags & FLAG_SV2_RO_OFF)
		245	SvREADONLY_off (req->sv2);
		246
		247	if (!EIO_CANCELLED (req) && req->callback)
373	{	248	{
374	ENTER;	249	ENTER;
375	SAVETMPS;	250	SAVETMPS;
376	PUSHMARK (SP);	251	PUSHMARK (SP);
377	EXTEND (SP, 1);	252	EXTEND (SP, 1);
378		253
379	switch (req->type)	254	switch (req->type)
380	{	255	{
381	case REQ_READDIR:	256	case EIO_READDIR:
382	{	257	{
383	SV *rv = &PL_sv_undef;	258	SV *rv = &PL_sv_undef;
384		259
385	if (req->result >= 0)	260	if (req->result >= 0)
386	{	261	{
387	int i;	262	int i;
388	char *buf = req->data2ptr;	263	char *names = (char *)req->ptr2;
		264	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	265	AV *av = newAV ();
390		266
391	av_extend (av, req->result - 1);	267	av_extend (av, req->result - 1);
392		268
393	for (i = 0; i < req->result; ++i)	269	for (i = 0; i < req->result; ++i)
394	{	270	{
395	SV *sv = newSVpv (buf, 0);	271	if (req->int1 & EIO_READDIR_DENTS)
		272	{
		273	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		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
397	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);
398	buf += SvCUR (sv) + 1;	303	names += SvCUR (name) + 1;
		304	}
399	}	305	}
400		306
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	307	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	308	}
403		309
404	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))));
405	}	314	}
406	break;	315	break;
407		316
408	case REQ_OPEN:	317	case EIO_OPEN:
409	{	318	{
410	/* convert fd to fh */	319	/* convert fd to fh */
411	SV *fh;	320	SV *fh = &PL_sv_undef;
412		321
413	PUSHs (sv_2mortal (newSViv (req->result)));	322	if (req->result >= 0)
414	PUTBACK;	323	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	324	GV *gv = (GV *)sv_newmortal ();
416	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);
417		331
418	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	);
419		339
		340	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		341	fh = (SV *)gv;
		342	}
		343
420	PUSHMARK (SP);	344	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	345	}
423	break;	346	break;
424		347
425	case REQ_GROUP:	348	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	349	req->int1 = 2; /* mark group as finished */
427		350
428	if (req->data)	351	if (req->sv1)
429	{	352	{
430	int i;	353	int i;
431	AV *av = (AV *)req->data;	354	AV *av = (AV *)req->sv1;
432		355
433	EXTEND (SP, AvFILL (av) + 1);	356	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	357	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	358	PUSHs (*av_fetch (av, i, 0));
436	}	359	}
437	break;	360	break;
438		361
439	case REQ_NOP:	362	case EIO_NOP:
440	case REQ_BUSY:	363	case EIO_BUSY:
441	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 */
442		394
443	default:	395	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	396	PUSHs (sv_2mortal (newSViv (req->result)));
445	break;	397	break;
446	}	398	}
447		399
448	errno = req->errorno;	400	errno = req->errorno;
449		401
450	PUTBACK;	402	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	403	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	404	SPAGAIN;
453		405
454	FREETMPS;	406	FREETMPS;
455	LEAVE;	407	LEAVE;
		408
		409	PUTBACK;
456	}	410	}
457		411
458	if (req->grp)	412	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	413	}
478		414
479	static void req_free (aio_req req)	415	static void req_destroy (aio_req req)
480	{	416	{
481	if (req->self)	417	if (req->self)
482	{	418	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	419	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	420	SvREFCNT_dec (req->self);
485	}	421	}
486		422
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	423	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	424	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	425	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		426
496	Safefree (req);	427	Safefree (req);
497	}	428	}
498		429
499	static void req_cancel_subs (aio_req grp)	430	static void req_cancel_subs (aio_req grp)
500	{	431	{
501	aio_req sub;	432	aio_req sub;
502		433
503	if (grp->type != REQ_GROUP)	434	if (grp->type != EIO_GROUP)
504	return;	435	return;
505		436
506	SvREFCNT_dec (grp->fh2);	437	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	438	grp->sv2 = 0;
508		439
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	440	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	441	}
512		442
513	static void req_cancel (aio_req req)	443	#ifdef USE_SOCKETS_AS_HANDLES
514	{	444	# define TO_SOCKET(x) (win32_get_osfhandle (x))
515	req->flags |= FLAG_CANCELLED;	445	#else
516		446	# define TO_SOCKET(x) (x)
517	req_cancel_subs (req);
518	}
519
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif	447	#endif
538		448
539	sigfillset (&fullsigset);	449	static void
		450	create_respipe (void)
		451	{
		452	int old_readfd = respipe [0];
540		453
541	LOCK (wrklock);	454	if (respipe [1] >= 0)
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	455	respipe_close (TO_SOCKET (respipe [1]));
543		456
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	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)
545	{	465	{
546	wrk->prev = &wrk_first;	466	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
547	wrk->next = wrk_first.next;	467	croak ("unable to initialize result pipe(2)");
548	wrk_first.next->prev = wrk;	468
549	wrk_first.next = wrk;	469	respipe_close (respipe [0]);
550	++started;	470	respipe [0] = old_readfd;
551	}	471	}
552	else
553	free (wrk);
554		472
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	#ifdef _WIN32
556	UNLOCK (wrklock);	474	int arg = 1;
557	}	475	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
558		476	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
559	static void maybe_start_thread ()	477	#else
560	{	478	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
561	#if 0	479	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif	480	#endif
		481	croak ("unable to initialize result pipe(3)");
565		482
566	if (started >= wanted)	483	respipe_osf [0] = TO_SOCKET (respipe [0]);
567	return;	484	respipe_osf [1] = TO_SOCKET (respipe [1]);
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}	485	}
592		486
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	487	static void poll_wait (void)
638	{	488	{
639	fd_set rfd;	489	fd_set rfd;
640		490
641	while (nreqs)	491	while (eio_nreqs ())
642	{	492	{
643	int size;	493	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	494
		495	X_LOCK (reslock);
645	size = res_queue.size;	496	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	497	X_UNLOCK (reslock);
647		498
648	if (size)	499	if (size)
649	return;	500	return;
650		501
651	maybe_start_thread ();	502	etp_maybe_start_thread ();
652		503
653	FD_ZERO(&rfd);	504	FD_ZERO (&rfd);
654	FD_SET(respipe [0], &rfd);	505	FD_SET (respipe [0], &rfd);
655		506
656	select (respipe [0] + 1, &rfd, 0, 0, 0);	507	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	508	}
658	}	509	}
659		510
660	static int poll_cb (int max)	511	static int poll_cb (void)
661	{	512	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	513	for (;;)
668	{	514	{
669	while (max <= 0 || count < max)	515	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		516
673	LOCK (reslock);	517	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	518	croak (0);
		519
		520	if (!max_outstanding || max_outstanding > eio_nreqs ())
		521	return res;
726		522
727	poll_wait ();	523	poll_wait ();
728
729	max = 0;
730	}	524	}
731
732	return count;
733	}	525	}
734		526
735	static void create_pipe ()	527	static void atfork_child (void)
736	{	528	{
737	if (pipe (respipe))	529	create_respipe ();
738	croak ("unable to initialize result pipe");
739
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}	530	}
746		531
747	/*****************************************************************************/	532	static SV *
748	/* work around various missing functions */	533	get_cb (SV *cb_sv)
749
750	#if !HAVE_PREADWRITE
751	# define pread aio_pread
752	# define pwrite aio_pwrite
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762	{	534	{
763	ssize_t res;	535	HV *st;
764	off_t ooffset;	536	GV *gvp;
		537	CV *cv;
765		538
766	LOCK (preadwritelock);	539	if (!SvOK (cb_sv))
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;	540	return 0;
854		541
855	#if HAVE_SENDFILE	542	cv = sv_2cv (cb_sv, &st, &gvp, 0);
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858		543
859	# elif __freebsd	544	if (!cv)
860	/*	545	croak ("IO::AIO callback must be undef or a CODE reference");
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867		546
868	if (res < 0 && sbytes)	547	return (SV *)cv;
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897
898	if (res < 0
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900	#if __solaris
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908
909	res = 0;
910
911	while (count)
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917	if (cnt <= 0)
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922
923	cnt = write (ofd, aio_buf, cnt);
924
925	if (cnt <= 0)
926	{
927	if (cnt && !res) res = -1;
928	break;
929	}
930
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;
938	}
939
940	/* read a full directory */
941	static void scandir_ (aio_req req, worker *self)
942	{
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000
1001	/*****************************************************************************/
1002
1003	static void *aio_proc (void *thr_arg)
1004	{
1005	aio_req req;
1006	worker *self = (worker *)thr_arg;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048
1049	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1050	case REQ_FSYNC: req->result = fsync (req->fd); break;
1051	case REQ_READDIR: scandir_ (req, self); break;
1052
1053	case REQ_BUSY:
1054	{
1055	struct timeval tv;
1056
1057	tv.tv_sec = req->fd;
1058	tv.tv_usec = req->fd2;
1059
1060	req->result = select (0, 0, 0, 0, &tv);
1061	}
1062
1063	case REQ_GROUP:
1064	case REQ_NOP:
1065	break;
1066
1067	case REQ_QUIT:
1068	LOCK (wrklock);
1069	worker_free (self);
1070	--started;
1071	UNLOCK (wrklock);
1072	return 0;
1073
1074	default:
1075	req->result = ENOSYS;
1076	break;
1077	}
1078
1079	req->errorno = errno;
1080
1081	LOCK (reslock);
1082
1083	++npending;
1084
1085	if (!reqq_push (&res_queue, req))
1086	/* write a dummy byte to the pipe so fh becomes ready */
1087	write (respipe [1], &respipe, 1);
1088
1089	self->req = 0;
1090	worker_clear (self);
1091
1092	UNLOCK (reslock);
1093	}
1094	}
1095
1096	/*****************************************************************************/
1097
1098	static void atfork_prepare (void)
1099	{
1100	LOCK (wrklock);
1101	LOCK (reqlock);
1102	LOCK (reslock);
1103	#if !HAVE_PREADWRITE
1104	LOCK (preadwritelock);
1105	#endif
1106	#if !HAVE_READDIR_R
1107	LOCK (readdirlock);
1108	#endif
1109	}
1110
1111	static void atfork_parent (void)
1112	{
1113	#if !HAVE_READDIR_R
1114	UNLOCK (readdirlock);
1115	#endif
1116	#if !HAVE_PREADWRITE
1117	UNLOCK (preadwritelock);
1118	#endif
1119	UNLOCK (reslock);
1120	UNLOCK (reqlock);
1121	UNLOCK (wrklock);
1122	}
1123
1124	static void atfork_child (void)
1125	{
1126	aio_req prv;
1127
1128	while (prv = reqq_shift (&req_queue))
1129	req_free (prv);
1130
1131	while (prv = reqq_shift (&res_queue))
1132	req_free (prv);
1133
1134	while (wrk_first.next != &wrk_first)
1135	{
1136	worker *wrk = wrk_first.next;
1137
1138	if (wrk->req)
1139	req_free (wrk->req);
1140
1141	worker_clear (wrk);
1142	worker_free (wrk);
1143	}
1144
1145	started = 0;
1146	nreqs = 0;
1147
1148	close (respipe [0]);
1149	close (respipe [1]);
1150	create_pipe ();
1151
1152	atfork_parent ();
1153	}	548	}
1154		549
1155	#define dREQ \	550	#define dREQ \
		551	SV *cb_cv; \
1156	aio_req req; \	552	aio_req req; \
1157	int req_pri = next_pri; \	553	int req_pri = next_pri; \
1158	next_pri = DEFAULT_PRI + PRI_BIAS; \	554	next_pri = EIO_PRI_DEFAULT; \
1159	\	555	\
1160	if (SvOK (callback) && !SvROK (callback)) \	556	cb_cv = get_cb (callback); \
1161	croak ("callback must be undef or of reference type"); \
1162	\	557	\
1163	Newz (0, req, 1, aio_cb); \	558	Newz (0, req, 1, eio_req); \
1164	if (!req) \	559	if (!req) \
1165	croak ("out of memory during aio_req allocation"); \	560	croak ("out of memory during eio_req allocation"); \
1166	\	561	\
1167	req->callback = newSVsv (callback); \	562	req->callback = SvREFCNT_inc (cb_cv); \
1168	req->pri = req_pri	563	req->pri = req_pri
1169		564
1170	#define REQ_SEND \	565	#define REQ_SEND \
		566	PUTBACK; \
1171	req_send (req); \	567	req_submit (req); \
		568	SPAGAIN; \
1172	\	569	\
1173	if (GIMME_V != G_VOID) \	570	if (GIMME_V != G_VOID) \
1174	XPUSHs (req_sv (req, AIO_REQ_KLASS));	571	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1175		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
1176	MODULE = IO::AIO PACKAGE = IO::AIO	584	MODULE = IO::AIO PACKAGE = IO::AIO
1177		585
1178	PROTOTYPES: ENABLE	586	PROTOTYPES: ENABLE
1179		587
1180	BOOT:	588	BOOT:
1181	{	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
1182	HV *stash = gv_stashpv ("IO::AIO", 1);	632	stash = gv_stashpv ("IO::AIO", 1);
1183	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1184	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1185	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1186		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
1187	create_pipe ();	637	create_respipe ();
1188	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1189		638
1190	start_thread ();	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);
1191	}	644	}
		645
		646	void
		647	max_poll_reqs (int nreqs)
		648	PROTOTYPE: $
		649	CODE:
		650	eio_set_max_poll_reqs (nreqs);
		651
		652	void
		653	max_poll_time (double nseconds)
		654	PROTOTYPE: $
		655	CODE:
		656	eio_set_max_poll_time (nseconds);
1192		657
1193	void	658	void
1194	min_parallel (int nthreads)	659	min_parallel (int nthreads)
1195	PROTOTYPE: $	660	PROTOTYPE: $
		661	CODE:
		662	eio_set_min_parallel (nthreads);
1196		663
1197	void	664	void
1198	max_parallel (int nthreads)	665	max_parallel (int nthreads)
1199	PROTOTYPE: $	666	PROTOTYPE: $
		667	CODE:
		668	eio_set_max_parallel (nthreads);
1200		669
1201	int	670	void
		671	max_idle (int nthreads)
		672	PROTOTYPE: $
		673	CODE:
		674	eio_set_max_idle (nthreads);
		675
		676	void
1202	max_outstanding (int maxreqs)	677	max_outstanding (int maxreqs)
1203	PROTOTYPE: $	678	PROTOTYPE: $
1204	CODE:	679	CODE:
1205	RETVAL = max_outstanding;
1206	max_outstanding = maxreqs;	680	max_outstanding = maxreqs;
1207	OUTPUT:
1208	RETVAL
1209		681
1210	void	682	void
1211	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	683	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1212	SV * pathname
1213	int flags
1214	int mode
1215	SV * callback
1216	PROTOTYPE: $$$;$	684	PROTOTYPE: $$$;$
1217	PPCODE:	685	PPCODE:
1218	{	686	{
1219	dREQ;	687	dREQ;
1220		688
1221	req->type = REQ_OPEN;	689	req->type = EIO_OPEN;
1222	req->data = newSVsv (pathname);	690	req->sv1 = newSVsv (pathname);
1223	req->dataptr = SvPVbyte_nolen (req->data);	691	req->ptr1 = SvPVbyte_nolen (req->sv1);
1224	req->fd = flags;	692	req->int1 = flags;
1225	req->mode = mode;	693	req->int2 = mode;
1226		694
1227	REQ_SEND;	695	REQ_SEND;
1228	}	696	}
1229		697
1230	void	698	void
1231	aio_close (fh,callback=&PL_sv_undef)	699	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1232	SV * fh
1233	SV * callback
1234	PROTOTYPE: $;$	700	PROTOTYPE: $;$
1235	ALIAS:	701	ALIAS:
1236	aio_close = REQ_CLOSE
1237	aio_fsync = REQ_FSYNC	702	aio_fsync = EIO_FSYNC
1238	aio_fdatasync = REQ_FDATASYNC	703	aio_fdatasync = EIO_FDATASYNC
1239	PPCODE:	704	PPCODE:
1240	{	705	{
		706	int fd = extract_fd (fh, 0);
1241	dREQ;	707	dREQ;
1242		708
1243	req->type = ix;	709	req->type = ix;
1244	req->fh = newSVsv (fh);	710	req->sv1 = newSVsv (fh);
1245	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	711	req->int1 = fd;
1246		712
1247	REQ_SEND (req);	713	REQ_SEND (req);
1248	}	714	}
1249		715
1250	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: $$$$;$
		719	PPCODE:
		720	{
		721	int fd = extract_fd (fh, 0);
		722	dREQ;
		723
		724	req->type = EIO_SYNC_FILE_RANGE;
		725	req->sv1 = newSVsv (fh);
		726	req->int1 = fd;
		727	req->offs = offset;
		728	req->size = nbytes;
		729	req->int2 = flags;
		730
		731	REQ_SEND (req);
		732	}
		733
		734	void
		735	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		736	PROTOTYPE: $;$
		737	PPCODE:
		738	{
		739	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		740	int fd = extract_fd (fh, 0);
		741	dREQ;
		742
		743	if (close_pipe < 0)
		744	{
		745	int pipefd [2];
		746
		747	if (pipe (pipefd) < 0
		748	|| close (pipefd [1]) < 0
		749	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		750	abort (); /*D*/
		751
		752	close_pipe = pipefd [0];
		753	}
		754
		755	req->type = EIO_DUP2;
		756	req->int1 = close_pipe;
		757	req->sv2 = newSVsv (fh);
		758	req->int2 = fd;
		759
		760	REQ_SEND (req);
		761	}
		762
		763	void
1251	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	764	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1252	SV * fh
1253	UV offset
1254	UV length
1255	SV * data
1256	UV dataoffset
1257	SV * callback
1258	ALIAS:	765	ALIAS:
1259	aio_read = REQ_READ	766	aio_read = EIO_READ
1260	aio_write = REQ_WRITE	767	aio_write = EIO_WRITE
1261	PROTOTYPE: $$$$$;$	768	PROTOTYPE: $$$$$;$
1262	PPCODE:	769	PPCODE:
1263	{	770	{
1264	aio_req req;
1265	STRLEN svlen;	771	STRLEN svlen;
		772	int fd = extract_fd (fh, ix == EIO_WRITE);
1266	char *svptr = SvPVbyte (data, svlen);	773	char *svptr = SvPVbyte (data, svlen);
1267		774	UV len = SvUV (length);
1268	SvUPGRADE (data, SVt_PV);
1269	SvPOK_on (data);
1270		775
1271	if (dataoffset < 0)	776	if (dataoffset < 0)
1272	dataoffset += svlen;	777	dataoffset += svlen;
1273		778
1274	if (dataoffset < 0 || dataoffset > svlen)	779	if (dataoffset < 0 || dataoffset > svlen)
1275	croak ("data offset outside of string");	780	croak ("dataoffset outside of data scalar");
1276		781
1277	if (ix == REQ_WRITE)	782	if (ix == EIO_WRITE)
1278	{	783	{
1279	/* write: check length and adjust. */	784	/* write: check length and adjust. */
1280	if (length < 0 || length + dataoffset > svlen)	785	if (!SvOK (length) || len + dataoffset > svlen)
1281	length = svlen - dataoffset;	786	len = svlen - dataoffset;
1282	}	787	}
1283	else	788	else
1284	{	789	{
1285	/* read: grow scalar as necessary */	790	/* read: check type and grow scalar as necessary */
		791	SvUPGRADE (data, SVt_PV);
1286	svptr = SvGROW (data, length + dataoffset);	792	svptr = SvGROW (data, len + dataoffset + 1);
1287	}	793	}
1288
1289	if (length < 0)
1290	croak ("length must not be negative");
1291		794
1292	{	795	{
1293	dREQ;	796	dREQ;
1294		797
1295	req->type = ix;	798	req->type = ix;
1296	req->fh = newSVsv (fh);	799	req->sv1 = newSVsv (fh);
1297	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	800	req->int1 = fd;
1298	: IoOFP (sv_2io (fh)));	801	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1299	req->offset = offset;	802	req->size = len;
1300	req->length = length;
1301	req->data = SvREFCNT_inc (data);	803	req->sv2 = SvREFCNT_inc (data);
1302	req->dataptr = (char *)svptr + dataoffset;	804	req->ptr2 = (char *)svptr + dataoffset;
		805	req->stroffset = dataoffset;
1303		806
1304	if (!SvREADONLY (data))	807	if (!SvREADONLY (data))
1305	{	808	{
1306	SvREADONLY_on (data);	809	SvREADONLY_on (data);
1307	req->data2ptr = (void *)data;	810	req->flags |= FLAG_SV2_RO_OFF;
1308	}	811	}
1309		812
1310	REQ_SEND;	813	REQ_SEND;
1311	}	814	}
1312	}	815	}
1313		816
1314	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
1315	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)
1316	SV * out_fh
1317	SV * in_fh
1318	UV in_offset
1319	UV length
1320	SV * callback
1321	PROTOTYPE: $$$$;$	834	PROTOTYPE: $$$$;$
1322	PPCODE:	835	PPCODE:
1323	{	836	{
		837	int ifd = extract_fd (in_fh , 0);
		838	int ofd = extract_fd (out_fh, 0);
1324	dREQ;	839	dREQ;
1325		840
1326	req->type = REQ_SENDFILE;	841	req->type = EIO_SENDFILE;
1327	req->fh = newSVsv (out_fh);	842	req->sv1 = newSVsv (out_fh);
1328	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	843	req->int1 = ofd;
1329	req->fh2 = newSVsv (in_fh);	844	req->sv2 = newSVsv (in_fh);
1330	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	845	req->int2 = ifd;
1331	req->offset = in_offset;	846	req->offs = in_offset;
1332	req->length = length;	847	req->size = length;
1333		848
1334	REQ_SEND;	849	REQ_SEND;
1335	}	850	}
1336		851
1337	void	852	void
1338	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	853	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1339	SV * fh
1340	UV offset
1341	IV length
1342	SV * callback
1343	PROTOTYPE: $$$;$	854	PROTOTYPE: $$$;$
1344	PPCODE:	855	PPCODE:
1345	{	856	{
		857	int fd = extract_fd (fh, 0);
1346	dREQ;	858	dREQ;
1347		859
1348	req->type = REQ_READAHEAD;	860	req->type = EIO_READAHEAD;
1349	req->fh = newSVsv (fh);	861	req->sv1 = newSVsv (fh);
1350	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	862	req->int1 = fd;
1351	req->offset = offset;	863	req->offs = offset;
1352	req->length = length;	864	req->size = length;
1353		865
1354	REQ_SEND;	866	REQ_SEND;
1355	}	867	}
1356		868
1357	void	869	void
1358	aio_stat (fh_or_path,callback=&PL_sv_undef)	870	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1359	SV * fh_or_path
1360	SV * callback
1361	ALIAS:	871	ALIAS:
1362	aio_stat = REQ_STAT	872	aio_stat = EIO_STAT
1363	aio_lstat = REQ_LSTAT	873	aio_lstat = EIO_LSTAT
1364	PPCODE:	874	PPCODE:
1365	{	875	{
1366	dREQ;	876	dREQ;
1367		877
1368	New (0, req->statdata, 1, Stat_t);	878	req->sv1 = newSVsv (fh_or_path);
1369	if (!req->statdata)
1370	{
1371	req_free (req);
1372	croak ("out of memory during aio_req->statdata allocation");
1373	}
1374		879
1375	if (SvPOK (fh_or_path))	880	if (SvPOK (req->sv1))
1376	{	881	{
1377	req->type = ix;	882	req->type = ix;
1378	req->data = newSVsv (fh_or_path);
1379	req->dataptr = SvPVbyte_nolen (req->data);	883	req->ptr1 = SvPVbyte_nolen (req->sv1);
1380	}	884	}
1381	else	885	else
1382	{	886	{
1383	req->type = REQ_FSTAT;	887	req->type = EIO_FSTAT;
1384	req->fh = newSVsv (fh_or_path);
1385	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	888	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1386	}	889	}
1387		890
1388	REQ_SEND;	891	REQ_SEND;
1389	}	892	}
1390		893
1391	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
1392	aio_unlink (pathname,callback=&PL_sv_undef)	1009	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1393	SV * pathname
1394	SV * callback
1395	ALIAS:	1010	ALIAS:
1396	aio_unlink = REQ_UNLINK	1011	aio_unlink = EIO_UNLINK
1397	aio_rmdir = REQ_RMDIR	1012	aio_rmdir = EIO_RMDIR
1398	aio_readdir = REQ_READDIR	1013	aio_readdir = EIO_READDIR
1399	PPCODE:	1014	PPCODE:
1400	{	1015	{
1401	dREQ;	1016	dREQ;
1402		1017
1403	req->type = ix;	1018	req->type = ix;
1404	req->data = newSVsv (pathname);	1019	req->sv1 = newSVsv (pathname);
1405	req->dataptr = SvPVbyte_nolen (req->data);	1020	req->ptr1 = SvPVbyte_nolen (req->sv1);
1406		1021
1407	REQ_SEND;	1022	REQ_SEND;
1408	}	1023	}
1409		1024
1410	void	1025	void
1411	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1412	SV * oldpath
1413	SV * newpath
1414	SV * callback
1415	ALIAS:	1027	ALIAS:
1416	aio_link = REQ_LINK	1028	aio_link = EIO_LINK
1417	aio_symlink = REQ_SYMLINK	1029	aio_symlink = EIO_SYMLINK
1418	aio_rename = REQ_RENAME	1030	aio_rename = EIO_RENAME
1419	PPCODE:	1031	PPCODE:
1420	{	1032	{
1421	dREQ;	1033	dREQ;
1422		1034
1423	req->type = ix;	1035	req->type = ix;
1424	req->fh = newSVsv (oldpath);	1036	req->sv1 = newSVsv (oldpath);
1425	req->data2ptr = SvPVbyte_nolen (req->fh);	1037	req->ptr1 = SvPVbyte_nolen (req->sv1);
1426	req->data = newSVsv (newpath);	1038	req->sv2 = newSVsv (newpath);
1427	req->dataptr = SvPVbyte_nolen (req->data);	1039	req->ptr2 = SvPVbyte_nolen (req->sv2);
1428		1040
1429	REQ_SEND;	1041	REQ_SEND;
1430	}	1042	}
1431		1043
1432	void	1044	void
1433	aio_busy (delay,callback=&PL_sv_undef)	1045	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1434	double delay
1435	SV * callback
1436	PPCODE:	1046	PPCODE:
1437	{	1047	{
1438	dREQ;	1048	dREQ;
1439		1049
1440	req->type = REQ_BUSY;	1050	req->type = EIO_MKNOD;
1441	req->fd = delay < 0. ? 0 : delay;	1051	req->sv1 = newSVsv (pathname);
1442	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1443		1053	req->int2 = (mode_t)mode;
		1054	req->offs = dev;
		1055
1444	REQ_SEND;	1056	REQ_SEND;
1445	}	1057	}
1446		1058
1447	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
1448	aio_group (callback=&PL_sv_undef)	1072	aio_group (SV *callback=&PL_sv_undef)
1449	SV * callback
1450	PROTOTYPE: ;$	1073	PROTOTYPE: ;$
1451	PPCODE:	1074	PPCODE:
1452	{	1075	{
1453	dREQ;	1076	dREQ;
1454		1077
1455	req->type = REQ_GROUP;	1078	req->type = EIO_GROUP;
		1079
1456	req_send (req);	1080	req_submit (req);
1457
1458	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1081	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1459	}	1082	}
1460		1083
1461	void	1084	void
1462	aio_nop (callback=&PL_sv_undef)	1085	aio_nop (SV *callback=&PL_sv_undef)
1463	SV * callback	1086	ALIAS:
		1087	aio_nop = EIO_NOP
		1088	aio_sync = EIO_SYNC
1464	PPCODE:	1089	PPCODE:
1465	{	1090	{
1466	dREQ;	1091	dREQ;
1467		1092
1468	req->type = REQ_NOP;	1093	req->type = ix;
1469		1094
1470	REQ_SEND;	1095	REQ_SEND;
1471	}	1096	}
1472		1097
1473	int	1098	int
1474	aioreq_pri (int pri = 0)	1099	aioreq_pri (int pri = 0)
1475	PROTOTYPE: ;$	1100	PROTOTYPE: ;$
1476	CODE:	1101	CODE:
1477	RETVAL = next_pri - PRI_BIAS;	1102	RETVAL = next_pri;
1478	if (items > 0)	1103	if (items > 0)
1479	{	1104	{
1480	if (pri < PRI_MIN) pri = PRI_MIN;	1105	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1481	if (pri > PRI_MAX) pri = PRI_MAX;	1106	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1482	next_pri = pri + PRI_BIAS;	1107	next_pri = pri;
1483	}	1108	}
1484	OUTPUT:	1109	OUTPUT:
1485	RETVAL	1110	RETVAL
1486		1111
1487	void	1112	void
1488	aioreq_nice (int nice = 0)	1113	aioreq_nice (int nice = 0)
1489	CODE:	1114	CODE:
1490	nice = next_pri - nice;	1115	nice = next_pri - nice;
1491	if (nice < PRI_MIN) nice = PRI_MIN;	1116	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1492	if (nice > PRI_MAX) nice = PRI_MAX;	1117	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1493	next_pri = nice + PRI_BIAS;	1118	next_pri = nice;
1494		1119
1495	void	1120	void
1496	flush ()	1121	flush ()
1497	PROTOTYPE:	1122	PROTOTYPE:
1498	CODE:	1123	CODE:
1499	while (nreqs)	1124	while (eio_nreqs ())
1500	{	1125	{
1501	poll_wait ();	1126	poll_wait ();
1502	poll_cb (0);	1127	poll_cb ();
1503	}	1128	}
1504		1129
1505	void	1130	int
1506	poll()	1131	poll()
1507	PROTOTYPE:	1132	PROTOTYPE:
1508	CODE:	1133	CODE:
1509	if (nreqs)
1510	{
1511	poll_wait ();	1134	poll_wait ();
1512	poll_cb (0);	1135	RETVAL = poll_cb ();
1513	}	1136	OUTPUT:
		1137	RETVAL
1514		1138
1515	int	1139	int
1516	poll_fileno()	1140	poll_fileno()
1517	PROTOTYPE:	1141	PROTOTYPE:
1518	CODE:	1142	CODE:
…		…
1522		1146
1523	int	1147	int
1524	poll_cb(...)	1148	poll_cb(...)
1525	PROTOTYPE:	1149	PROTOTYPE:
1526	CODE:	1150	CODE:
1527	RETVAL = poll_cb (0);	1151	RETVAL = poll_cb ();
1528	OUTPUT:	1152	OUTPUT:
1529	RETVAL	1153	RETVAL
1530		1154
1531	int
1532	poll_some(int max = 0)
1533	PROTOTYPE: $
1534	CODE:
1535	RETVAL = poll_cb (max);
1536	OUTPUT:
1537	RETVAL
1538
1539	void	1155	void
1540	poll_wait()	1156	poll_wait()
1541	PROTOTYPE:	1157	PROTOTYPE:
1542	CODE:	1158	CODE:
1543	if (nreqs)
1544	poll_wait ();	1159	poll_wait ();
1545		1160
1546	int	1161	int
1547	nreqs()	1162	nreqs()
1548	PROTOTYPE:	1163	PROTOTYPE:
1549	CODE:	1164	CODE:
1550	RETVAL = nreqs;	1165	RETVAL = eio_nreqs ();
1551	OUTPUT:	1166	OUTPUT:
1552	RETVAL	1167	RETVAL
1553		1168
1554	int	1169	int
1555	nready()	1170	nready()
1556	PROTOTYPE:	1171	PROTOTYPE:
1557	CODE:	1172	CODE:
1558	RETVAL = get_nready ();	1173	RETVAL = eio_nready ();
1559	OUTPUT:	1174	OUTPUT:
1560	RETVAL	1175	RETVAL
1561		1176
1562	int	1177	int
1563	npending()	1178	npending()
1564	PROTOTYPE:	1179	PROTOTYPE:
1565	CODE:	1180	CODE:
1566	RETVAL = get_npending ();	1181	RETVAL = eio_npending ();
1567	OUTPUT:	1182	OUTPUT:
1568	RETVAL	1183	RETVAL
1569		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
1570	PROTOTYPES: DISABLE	1218	PROTOTYPES: DISABLE
1571		1219
1572	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1220	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1573		1221
1574	void	1222	void
1575	cancel (aio_req_ornot req)	1223	cancel (aio_req_ornot req)
1576	CODE:	1224	CODE:
1577	req_cancel (req);	1225	eio_cancel (req);
1578		1226
1579	void	1227	void
1580	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1228	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1581	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
1582	SvREFCNT_dec (req->callback);	1238	SvREFCNT_dec (req->callback);
1583	req->callback = newSVsv (callback);	1239	req->callback = SvREFCNT_inc (cb_cv);
		1240	}
		1241	}
1584		1242
1585	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1243	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1586		1244
1587	void	1245	void
1588	add (aio_req grp, ...)	1246	add (aio_req grp, ...)
1589	PPCODE:	1247	PPCODE:
1590	{	1248	{
1591	int i;	1249	int i;
1592	aio_req req;
1593		1250
1594	if (grp->fd == 2)	1251	if (grp->int1 == 2)
1595	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");
1596		1253
1597	for (i = 1; i < items; ++i )	1254	for (i = 1; i < items; ++i )
1598	{	1255	{
		1256	aio_req req;
		1257
1599	if (GIMME_V != G_VOID)	1258	if (GIMME_V != G_VOID)
1600	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1259	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1601		1260
1602	req = SvAIO_REQ (ST (i));	1261	req = SvAIO_REQ (ST (i));
1603		1262
1604	if (req)	1263	if (req)
1605	{	1264	eio_grp_add (grp, req);
1606	++grp->length;
1607	req->grp = grp;
1608
1609	req->grp_prev = 0;
1610	req->grp_next = grp->grp_first;
1611
1612	if (grp->grp_first)
1613	grp->grp_first->grp_prev = req;
1614
1615	grp->grp_first = req;
1616	}
1617	}	1265	}
1618	}	1266	}
1619		1267
1620	void	1268	void
1621	cancel_subs (aio_req_ornot req)	1269	cancel_subs (aio_req_ornot req)
…		…
1630	AV *av;	1278	AV *av;
1631		1279
1632	grp->errorno = errno;	1280	grp->errorno = errno;
1633		1281
1634	av = newAV ();	1282	av = newAV ();
		1283	av_extend (av, items - 1);
1635		1284
1636	for (i = 1; i < items; ++i )	1285	for (i = 1; i < items; ++i )
1637	av_push (av, newSVsv (ST (i)));	1286	av_push (av, newSVsv (ST (i)));
1638		1287
1639	SvREFCNT_dec (grp->data);	1288	SvREFCNT_dec (grp->sv1);
1640	grp->data = (SV *)av;	1289	grp->sv1 = (SV *)av;
1641	}	1290	}
1642		1291
1643	void	1292	void
1644	errno (aio_req grp, int errorno = errno)	1293	errno (aio_req grp, int errorno = errno)
1645	CODE:	1294	CODE:
1646	grp->errorno = errorno;	1295	grp->errorno = errorno;
1647		1296
1648	void	1297	void
1649	limit (aio_req grp, int limit)	1298	limit (aio_req grp, int limit)
1650	CODE:	1299	CODE:
1651	grp->fd2 = limit;	1300	eio_grp_limit (grp, limit);
1652	aio_grp_feed (grp);
1653		1301
1654	void	1302	void
1655	feed (aio_req grp, SV *callback=&PL_sv_undef)	1303	feed (aio_req grp, SV *callback=&PL_sv_undef)
1656	CODE:	1304	CODE:
1657	{	1305	{
1658	SvREFCNT_dec (grp->fh2);	1306	SvREFCNT_dec (grp->sv2);
1659	grp->fh2 = newSVsv (callback);	1307	grp->sv2 = newSVsv (callback);
		1308	grp->feed = aio_grp_feed;
1660		1309
1661	if (grp->fd2 <= 0)	1310	if (grp->int2 <= 0)
1662	grp->fd2 = 2;	1311	grp->int2 = 2;
1663		1312
1664	aio_grp_feed (grp);	1313	eio_grp_limit (grp, grp->int2);
1665	}	1314	}
1666		1315

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