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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.84 by root, Sat Oct 28 01:24:19 2006 UTC vs.
Revision 1.152 by root, Tue Jul 14 00:32:27 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	/* perl namespace pollution */
34	# if __linux	21	#undef VERSION
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>
43	# else
44	# error sendfile support requested but not available
45	# endif
46	#endif
47		22
48	/* number of seconds after which idle threads exit */	23	#ifdef _WIN32
49	#define IDLE_TIMEOUT 10
50		24
51	/* used for struct dirent, AIX doesn't provide it */	25	# define EIO_STRUCT_DIRENT Direntry_t
52	#ifndef NAME_MAX	26	# undef malloc
53	# define NAME_MAX 4096	27	# undef free
54	#endif
55		28
56	#ifndef PTHREAD_STACK_MIN	29	// perl overrides all those nice win32 functions
57	/* care for broken platforms, e.g. windows */	30	# undef open
58	# define PTHREAD_STACK_MIN 16384	31	# undef read
59	#endif	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
60		46
61	#if __ia64	47	# define chown(a,b,c) (errno = ENOSYS, -1)
62	# define STACKSIZE 65536	48	# define fchown(a,b,c) (errno = ENOSYS, -1)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	49	# define fchmod(a,b) (errno = ENOSYS, -1)
64	# define STACKSIZE PTHREAD_STACK_MIN	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
65	#else	61	#else
66	# define STACKSIZE 16384
67	#endif
68		62
69	/* wether word reads are potentially non-atomic.	63	# include <sys/time.h>
70	* this is conservatice, likely most arches this runs	64	# include <sys/select.h>
71	* on have atomic word read/writes.	65	# include <unistd.h>
72	*/	66	# include <utime.h>
73	#ifndef WORDREAD_UNSAFE	67	# include <signal.h>
74	# if __i386 || __x86_64	68	# define EIO_STRUCT_DIRENT struct dirent
75	# define WORDREAD_UNSAFE 0	69
76	# else
77	# define WORDREAD_UNSAFE 1
78	# endif	70	#endif
79	#endif
80		71
81	/* buffer size for various temporary buffers */	72	/* perl stupidly overrides readdir and maybe others */
82	#define AIO_BUFSIZE 65536	73	/* with thread-unsafe versions, imagine that :( */
		74	#undef readdir
		75	#undef opendir
		76	#undef closedir
83		77
84	#define dBUF \	78	#define EIO_STRUCT_STAT Stat_t
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91		79
92	enum {	80	/* use NV for 32 bit perls as it allows larger offsets */
93	REQ_QUIT,	81	#if IVSIZE >= 8
94	REQ_OPEN, REQ_CLOSE,	82	# define VAL64 IV
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,	83	# define SvVAL64 SvIV
96	REQ_SENDFILE,	84	# define newSVval64 newSViv
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	85	#else
98	REQ_FSYNC, REQ_FDATASYNC,	86	# define VAL64 NV
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	87	# define SvVAL64 SvNV
100	REQ_MKNOD, REQ_READDIR,	88	# define newSVval64 newSVnv
101	REQ_LINK, REQ_SYMLINK,	89	#endif
102	REQ_GROUP, REQ_NOP,	90
103	REQ_BUSY,	91	/*****************************************************************************/
104	};	92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	static HV *stash;
		105	typedef SV SV8; /* byte-sv, used for argument-checking */
		106	typedef int aio_rfd; /* read file desriptor */
		107	typedef int aio_wfd; /* write file descriptor */
105		108
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		111
109	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;	113	SV *callback; \
114	SV *fh, *fh2;	114	SV *sv1, *sv2; \
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;	115	STRLEN stroffset; \
122	int type;	116	SV *self;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126		117
127	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
128	unsigned char pri;
129		119
130	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
132	} 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)
133		151
134	enum {	152	enum {
135	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
136	};	154	};
137		155
		156	#include "libeio/eio.c"
		157
138	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
140		160
141	enum {	161	static SV *on_next_submit;
142	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	163	static int max_outstanding;
144		164
145	DEFAULT_PRI = 0,	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		166
150	static int next_pri = DEFAULT_PRI + PRI_BIAS;
151
152	static unsigned int started, idle, wanted;
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static volatile unsigned int nreqs, nready, npending;
204	static volatile unsigned int max_idle = 4;
205	static volatile unsigned int max_outstanding = 0xffffffff;
206	static int respipe [2];
207
208	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
209	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
210	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212	#if WORDREAD_UNSAFE
213
214	static unsigned int get_nready ()
215	{
216	unsigned int retval;
217
218	LOCK (reqlock);
219	retval = nready;
220	UNLOCK (reqlock);
221
222	return retval;
223	}
224
225	static unsigned int get_npending ()
226	{
227	unsigned int retval;
228
229	LOCK (reslock);
230	retval = npending;
231	UNLOCK (reslock);
232
233	return retval;
234	}
235
236	#else
237
238	# define get_nready() nready
239	# define get_npending() npending
240
241	#endif
242
243	/*
244	* a somewhat faster data structure might be nice, but
245	* with 8 priorities this actually needs <20 insns
246	* per shift, the most expensive operation.
247	*/
248	typedef struct {
249	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
250	int size;
251	} reqq;
252
253	static reqq req_queue;
254	static reqq res_queue;
255
256	int reqq_push (reqq *q, aio_req req)
257	{
258	int pri = req->pri;
259	req->next = 0;
260
261	if (q->qe[pri])
262	{
263	q->qe[pri]->next = req;
264	q->qe[pri] = req;
265	}
266	else
267	q->qe[pri] = q->qs[pri] = req;
268
269	return q->size++;
270	}
271
272	aio_req reqq_shift (reqq *q)
273	{
274	int pri;
275
276	if (!q->size)
277	return 0;
278
279	--q->size;
280
281	for (pri = NUM_PRI; pri--; )
282	{
283	aio_req req = q->qs[pri];
284
285	if (req)
286	{
287	if (!(q->qs[pri] = req->next))
288	q->qe[pri] = 0;
289
290	return req;
291	}
292	}
293
294	abort ();
295	}
296
297	static int poll_cb (int max);
298	static void req_invoke (aio_req req);
299	static void req_free (aio_req req);	167	static void req_destroy (aio_req req);
300	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	}
301		183
302	/* must be called at most once */	184	/* must be called at most once */
303	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
304	{	186	{
305	if (!req->self)	187	if (!req->self)
…		…
323	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
324	}	206	}
325		207
326	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
327	{	209	{
328	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
329	{	211	{
330	int old_len = grp->length;
331
332	if (grp->fh2 && SvOK (grp->fh2))
333	{
334	dSP;	212	dSP;
335		213
336	ENTER;	214	ENTER;
337	SAVETMPS;	215	SAVETMPS;
338	PUSHMARK (SP);	216	PUSHMARK (SP);
339	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
340	PUTBACK;	218	PUTBACK;
341	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342	SPAGAIN;	220	SPAGAIN;
343	FREETMPS;	221	FREETMPS;
344	LEAVE;	222	LEAVE;
345	}
346
347	/* stop if no progress has been made */
348	if (old_len == grp->length)
349	{
350	SvREFCNT_dec (grp->fh2);
351	grp->fh2 = 0;
352	break;
353	}
354	}	223	}
355	}	224	}
356		225
357	static void aio_grp_dec (aio_req grp)	226	static void req_submit (eio_req *req)
358	{	227	{
359	--grp->length;	228	eio_submit (req);
360		229
361	/* call feeder, if applicable */	230	if (expect_false (on_next_submit))
362	aio_grp_feed (grp);
363
364	/* finish, if done */
365	if (!grp->length && grp->fd)
366	{	231	{
367	req_invoke (grp);	232	dSP;
368	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);
369	}	240	}
370	}	241	}
371		242
372	static void req_invoke (aio_req req)	243	static int req_invoke (eio_req *req)
373	{	244	{
374	dSP;	245	dSP;
375		246
376	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
377	{	251	{
378	ENTER;	252	ENTER;
379	SAVETMPS;	253	SAVETMPS;
380	PUSHMARK (SP);	254	PUSHMARK (SP);
381	EXTEND (SP, 1);	255	EXTEND (SP, 1);
382		256
383	switch (req->type)	257	switch (req->type)
384	{	258	{
385	case REQ_READDIR:	259	case EIO_READDIR:
386	{	260	{
387	SV *rv = &PL_sv_undef;	261	SV *rv = &PL_sv_undef;
388		262
389	if (req->result >= 0)	263	if (req->result >= 0)
390	{	264	{
391	int i;	265	int i;
392	char *buf = req->data2ptr;	266	char *names = (char *)req->ptr2;
		267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
393	AV *av = newAV ();	268	AV *av = newAV ();
394		269
395	av_extend (av, req->result - 1);	270	av_extend (av, req->result - 1);
396		271
397	for (i = 0; i < req->result; ++i)	272	for (i = 0; i < req->result; ++i)
398	{	273	{
399	SV *sv = newSVpv (buf, 0);	274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
400		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
401	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);
402	buf += SvCUR (sv) + 1;	306	names += SvCUR (name) + 1;
		307	}
403	}	308	}
404		309
405	rv = sv_2mortal (newRV_noinc ((SV *)av));	310	rv = sv_2mortal (newRV_noinc ((SV *)av));
406	}	311	}
407		312
408	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))));
409	}	317	}
410	break;	318	break;
411		319
412	case REQ_OPEN:	320	case EIO_OPEN:
413	{	321	{
414	/* convert fd to fh */	322	/* convert fd to fh */
415	SV *fh;	323	SV *fh = &PL_sv_undef;
416		324
417	PUSHs (sv_2mortal (newSViv (req->result)));	325	if (req->result >= 0)
418	PUTBACK;	326	{
419	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	327	GV *gv = (GV *)sv_newmortal ();
420	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);
421		334
422	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	);
423		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
424	PUSHMARK (SP);	347	PUSHs (fh);
425	XPUSHs (sv_2mortal (fh));
426	}	348	}
427	break;	349	break;
428		350
429	case REQ_GROUP:	351	case EIO_GROUP:
430	req->fd = 2; /* mark group as finished */	352	req->int1 = 2; /* mark group as finished */
431		353
432	if (req->data)	354	if (req->sv1)
433	{	355	{
434	int i;	356	int i;
435	AV *av = (AV *)req->data;	357	AV *av = (AV *)req->sv1;
436		358
437	EXTEND (SP, AvFILL (av) + 1);	359	EXTEND (SP, AvFILL (av) + 1);
438	for (i = 0; i <= AvFILL (av); ++i)	360	for (i = 0; i <= AvFILL (av); ++i)
439	PUSHs (*av_fetch (av, i, 0));	361	PUSHs (*av_fetch (av, i, 0));
440	}	362	}
441	break;	363	break;
442		364
443	case REQ_NOP:	365	case EIO_NOP:
444	case REQ_BUSY:	366	case EIO_BUSY:
445	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 */
446		397
447	default:	398	default:
448	PUSHs (sv_2mortal (newSViv (req->result)));	399	PUSHs (sv_2mortal (newSViv (req->result)));
449	break;	400	break;
450	}	401	}
451		402
452	errno = req->errorno;	403	errno = req->errorno;
453		404
454	PUTBACK;	405	PUTBACK;
455	call_sv (req->callback, G_VOID | G_EVAL);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456	SPAGAIN;	407	SPAGAIN;
457		408
458	FREETMPS;	409	FREETMPS;
459	LEAVE;	410	LEAVE;
		411
		412	PUTBACK;
460	}	413	}
461		414
462	if (req->grp)	415	return !!SvTRUE (ERRSV);
463	{
464	aio_req grp = req->grp;
465
466	/* unlink request */
467	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
468	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
469
470	if (grp->grp_first == req)
471	grp->grp_first = req->grp_next;
472
473	aio_grp_dec (grp);
474	}
475
476	if (SvTRUE (ERRSV))
477	{
478	req_free (req);
479	croak (0);
480	}
481	}	416	}
482		417
483	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
484	{	419	{
485	if (req->self)	420	if (req->self)
486	{	421	{
487	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
488	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
489	}	424	}
490		425
491	SvREFCNT_dec (req->data);
492	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
493	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
494	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
495	Safefree (req->statdata);
496
497	if (req->type == REQ_READDIR)
498	free (req->data2ptr);
499		429
500	Safefree (req);	430	Safefree (req);
501	}	431	}
502		432
503	static void req_cancel_subs (aio_req grp)	433	static void req_cancel_subs (aio_req grp)
504	{	434	{
505	aio_req sub;	435	aio_req sub;
506		436
507	if (grp->type != REQ_GROUP)	437	if (grp->type != EIO_GROUP)
508	return;	438	return;
509		439
510	SvREFCNT_dec (grp->fh2);	440	SvREFCNT_dec (grp->sv2);
511	grp->fh2 = 0;	441	grp->sv2 = 0;
512		442
513	for (sub = grp->grp_first; sub; sub = sub->grp_next)	443	eio_grp_cancel (grp);
514	req_cancel (sub);
515	}	444	}
516		445
517	static void req_cancel (aio_req req)	446	#ifdef USE_SOCKETS_AS_HANDLES
518	{	447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
519	req->flags |= FLAG_CANCELLED;	448	#else
520		449	# define TO_SOCKET(x) (x)
521	req_cancel_subs (req);
522	}
523
524	static void *aio_proc(void *arg);
525
526	static void start_thread (void)
527	{
528	sigset_t fullsigset, oldsigset;
529	pthread_attr_t attr;
530
531	worker *wrk = calloc (1, sizeof (worker));
532
533	if (!wrk)
534	croak ("unable to allocate worker thread data");
535
536	pthread_attr_init (&attr);
537	pthread_attr_setstacksize (&attr, STACKSIZE);
538	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539	#ifdef PTHREAD_SCOPE_PROCESS
540	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541	#endif	450	#endif
542		451
543	sigfillset (&fullsigset);	452	static void
		453	create_respipe (void)
		454	{
		455	int old_readfd = respipe [0];
544		456
545	LOCK (wrklock);	457	if (respipe [1] >= 0)
546	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	458	respipe_close (TO_SOCKET (respipe [1]));
547		459
548	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	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)
549	{	468	{
550	wrk->prev = &wrk_first;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
551	wrk->next = wrk_first.next;	470	croak ("unable to initialize result pipe(2)");
552	wrk_first.next->prev = wrk;	471
553	wrk_first.next = wrk;	472	respipe_close (respipe [0]);
554	++started;	473	respipe [0] = old_readfd;
555	}	474	}
556	else
557	free (wrk);
558		475
559	sigprocmask (SIG_SETMASK, &oldsigset, 0);	476	#ifdef _WIN32
560	UNLOCK (wrklock);	477	int arg = 1;
561	}	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)");
562		485
563	static void maybe_start_thread ()	486	respipe_osf [0] = TO_SOCKET (respipe [0]);
564	{	487	respipe_osf [1] = TO_SOCKET (respipe [1]);
565	if (started >= wanted)
566	return;
567
568	/* todo: maybe use idle here, but might be less exact */
569	if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570	return;
571
572	start_thread ();
573	}	488	}
574		489
575	static void req_send (aio_req req)
576	{
577	++nreqs;
578
579	LOCK (reqlock);
580	++nready;
581	reqq_push (&req_queue, req);
582	pthread_cond_signal (&reqwait);
583	UNLOCK (reqlock);
584
585	maybe_start_thread ();
586	}
587
588	static void end_thread (void)
589	{
590	aio_req req;
591
592	Newz (0, req, 1, aio_cb);
593
594	req->type = REQ_QUIT;
595	req->pri = PRI_MAX + PRI_BIAS;
596
597	LOCK (reqlock);
598	reqq_push (&req_queue, req);
599	pthread_cond_signal (&reqwait);
600	UNLOCK (reqlock);
601
602	LOCK (wrklock);
603	--started;
604	UNLOCK (wrklock);
605	}
606
607	static void min_parallel (int nthreads)
608	{
609	if (wanted < nthreads)
610	wanted = nthreads;
611	}
612
613	static void max_parallel (int nthreads)
614	{
615	if (wanted > nthreads)
616	wanted = nthreads;
617
618	while (started > wanted)
619	end_thread ();
620	}
621
622	static void poll_wait ()	490	static void poll_wait (void)
623	{	491	{
624	fd_set rfd;	492	fd_set rfd;
625		493
626	while (nreqs)	494	while (eio_nreqs ())
627	{	495	{
628	int size;	496	int size;
629	if (WORDREAD_UNSAFE) LOCK (reslock);	497
		498	X_LOCK (reslock);
630	size = res_queue.size;	499	size = res_queue.size;
631	if (WORDREAD_UNSAFE) UNLOCK (reslock);	500	X_UNLOCK (reslock);
632		501
633	if (size)	502	if (size)
634	return;	503	return;
635		504
636	maybe_start_thread ();	505	etp_maybe_start_thread ();
637		506
638	FD_ZERO(&rfd);	507	FD_ZERO (&rfd);
639	FD_SET(respipe [0], &rfd);	508	FD_SET (respipe [0], &rfd);
640		509
641	select (respipe [0] + 1, &rfd, 0, 0, 0);	510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	511	}
643	}	512	}
644		513
645	static int poll_cb (int max)	514	static int poll_cb (void)
646	{	515	{
647	dSP;
648	int count = 0;
649	int do_croak = 0;
650	aio_req req;
651
652	for (;;)	516	for (;;)
653	{	517	{
654	while (max <= 0 || count < max)	518	int res = eio_poll ();
655	{
656	maybe_start_thread ();
657		519
658	LOCK (reslock);	520	if (res > 0)
659	req = reqq_shift (&res_queue);
660
661	if (req)
662	{
663	--npending;
664
665	if (!res_queue.size)
666	{
667	/* read any signals sent by the worker threads */
668	char buf [32];
669	while (read (respipe [0], buf, 32) == 32)
670	;
671	}
672	}
673
674	UNLOCK (reslock);
675
676	if (!req)
677	break;
678
679	--nreqs;
680
681	if (req->type == REQ_GROUP && req->length)
682	{
683	req->fd = 1; /* mark request as delayed */
684	continue;
685	}
686	else
687	{
688	if (req->type == REQ_READ)
689	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692	SvREADONLY_off (req->data);
693
694	if (req->statdata)
695	{
696	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697	PL_laststatval = req->result;
698	PL_statcache = *(req->statdata);
699	}
700
701	req_invoke (req);
702
703	count++;
704	}
705
706	req_free (req);
707	}
708
709	if (nreqs <= max_outstanding)
710	break;	521	croak (0);
		522
		523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
711		525
712	poll_wait ();	526	poll_wait ();
713
714	max = 0;
715	}	527	}
716
717	return count;
718	}
719
720	static void create_pipe ()
721	{
722	if (pipe (respipe))
723	croak ("unable to initialize result pipe");
724
725	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
726	croak ("cannot set result pipe to nonblocking mode");
727
728	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
729	croak ("cannot set result pipe to nonblocking mode");
730	}
731
732	/*****************************************************************************/
733	/* work around various missing functions */
734
735	#if !HAVE_PREADWRITE
736	# define pread aio_pread
737	# define pwrite aio_pwrite
738
739	/*
740	* make our pread/pwrite safe against themselves, but not against
741	* normal read/write by using a mutex. slows down execution a lot,
742	* but that's your problem, not mine.
743	*/
744	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
745
746	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
747	{
748	ssize_t res;
749	off_t ooffset;
750
751	LOCK (preadwritelock);
752	ooffset = lseek (fd, 0, SEEK_CUR);
753	lseek (fd, offset, SEEK_SET);
754	res = read (fd, buf, count);
755	lseek (fd, ooffset, SEEK_SET);
756	UNLOCK (preadwritelock);
757
758	return res;
759	}
760
761	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = write (fd, buf, count);
770	lseek (fd, offset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775	#endif
776
777	#if !HAVE_FDATASYNC
778	# define fdatasync fsync
779	#endif
780
781	#if !HAVE_READAHEAD
782	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
783
784	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
785	{
786	dBUF;
787
788	while (count > 0)
789	{
790	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
791
792	pread (fd, aio_buf, len, offset);
793	offset += len;
794	count -= len;
795	}
796
797	errno = 0;
798	}
799
800	#endif
801
802	#if !HAVE_READDIR_R
803	# define readdir_r aio_readdir_r
804
805	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
806
807	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
808	{
809	struct dirent *e;
810	int errorno;
811
812	LOCK (readdirlock);
813
814	e = readdir (dirp);
815	errorno = errno;
816
817	if (e)
818	{
819	*res = ent;
820	strcpy (ent->d_name, e->d_name);
821	}
822	else
823	*res = 0;
824
825	UNLOCK (readdirlock);
826
827	errno = errorno;
828	return e ? 0 : -1;
829	}
830	#endif
831
832	/* sendfile always needs emulation */
833	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
834	{
835	ssize_t res;
836
837	if (!count)
838	return 0;
839
840	#if HAVE_SENDFILE
841	# if __linux
842	res = sendfile (ofd, ifd, &offset, count);
843
844	# elif __freebsd
845	/*
846	* Of course, the freebsd sendfile is a dire hack with no thoughts
847	* wasted on making it similar to other I/O functions.
848	*/
849	{
850	off_t sbytes;
851	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
852
853	if (res < 0 && sbytes)
854	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
855	res = sbytes;
856	}
857
858	# elif __hpux
859	res = sendfile (ofd, ifd, offset, count, 0, 0);
860
861	# elif __solaris
862	{
863	struct sendfilevec vec;
864	size_t sbytes;
865
866	vec.sfv_fd = ifd;
867	vec.sfv_flag = 0;
868	vec.sfv_off = offset;
869	vec.sfv_len = count;
870
871	res = sendfilev (ofd, &vec, 1, &sbytes);
872
873	if (res < 0 && sbytes)
874	res = sbytes;
875	}
876
877	# endif
878	#else
879	res = -1;
880	errno = ENOSYS;
881	#endif
882
883	if (res < 0
884	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
885	#if __solaris
886	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
887	#endif
888	)
889	)
890	{
891	/* emulate sendfile. this is a major pain in the ass */
892	dBUF;
893
894	res = 0;
895
896	while (count)
897	{
898	ssize_t cnt;
899
900	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
901
902	if (cnt <= 0)
903	{
904	if (cnt && !res) res = -1;
905	break;
906	}
907
908	cnt = write (ofd, aio_buf, cnt);
909
910	if (cnt <= 0)
911	{
912	if (cnt && !res) res = -1;
913	break;
914	}
915
916	offset += cnt;
917	res += cnt;
918	count -= cnt;
919	}
920	}
921
922	return res;
923	}
924
925	/* read a full directory */
926	static void scandir_ (aio_req req, worker *self)
927	{
928	DIR *dirp;
929	union
930	{
931	struct dirent d;
932	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
933	} *u;
934	struct dirent *entp;
935	char *name, *names;
936	int memlen = 4096;
937	int memofs = 0;
938	int res = 0;
939	int errorno;
940
941	LOCK (wrklock);
942	self->dirp = dirp = opendir (req->dataptr);
943	self->dbuf = u = malloc (sizeof (*u));
944	req->data2ptr = names = malloc (memlen);
945	UNLOCK (wrklock);
946
947	if (dirp && u && names)
948	for (;;)
949	{
950	errno = 0;
951	readdir_r (dirp, &u->d, &entp);
952
953	if (!entp)
954	break;
955
956	name = entp->d_name;
957
958	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
959	{
960	int len = strlen (name) + 1;
961
962	res++;
963
964	while (memofs + len > memlen)
965	{
966	memlen *= 2;
967	LOCK (wrklock);
968	req->data2ptr = names = realloc (names, memlen);
969	UNLOCK (wrklock);
970
971	if (!names)
972	break;
973	}
974
975	memcpy (names + memofs, name, len);
976	memofs += len;
977	}
978	}
979
980	if (errno)
981	res = -1;
982
983	req->result = res;
984	}
985
986	/*****************************************************************************/
987
988	static void *aio_proc (void *thr_arg)
989	{
990	aio_req req;
991	struct timespec ts;
992	worker *self = (worker *)thr_arg;
993
994	/* try to distribute timeouts somewhat evenly */
995	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996	* (1000000000UL / 1024UL);
997
998	for (;;)
999	{
1000	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
1002	LOCK (reqlock);
1003
1004	for (;;)
1005	{
1006	self->req = req = reqq_shift (&req_queue);
1007
1008	if (req)
1009	break;
1010
1011	++idle;
1012
1013	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014	== ETIMEDOUT)
1015	{
1016	if (idle > max_idle)
1017	{
1018	--idle;
1019	UNLOCK (reqlock);
1020	LOCK (wrklock);
1021	--started;
1022	UNLOCK (wrklock);
1023	goto quit;
1024	}
1025
1026	/* we are allowed to idle, so do so without any timeout */
1027	pthread_cond_wait (&reqwait, &reqlock);
1028	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029	}
1030
1031	--idle;
1032	}
1033
1034	--nready;
1035
1036	UNLOCK (reqlock);
1037
1038	errno = 0; /* strictly unnecessary */
1039
1040	if (!(req->flags & FLAG_CANCELLED))
1041	switch (req->type)
1042	{
1043	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1044	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1045
1046	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1047	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1048
1049	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1050	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1051	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1052
1053	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1054	case REQ_CLOSE: req->result = close (req->fd); break;
1055	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1056	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1057	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1058	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1059	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1061
1062	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1063	case REQ_FSYNC: req->result = fsync (req->fd); break;
1064	case REQ_READDIR: scandir_ (req, self); break;
1065
1066	case REQ_BUSY:
1067	{
1068	struct timeval tv;
1069
1070	tv.tv_sec = req->fd;
1071	tv.tv_usec = req->fd2;
1072
1073	req->result = select (0, 0, 0, 0, &tv);
1074	}
1075
1076	case REQ_GROUP:
1077	case REQ_NOP:
1078	break;
1079
1080	case REQ_QUIT:
1081	goto quit;
1082
1083	default:
1084	req->result = ENOSYS;
1085	break;
1086	}
1087
1088	req->errorno = errno;
1089
1090	LOCK (reslock);
1091
1092	++npending;
1093
1094	if (!reqq_push (&res_queue, req))
1095	/* write a dummy byte to the pipe so fh becomes ready */
1096	write (respipe [1], &respipe, 1);
1097
1098	self->req = 0;
1099	worker_clear (self);
1100
1101	UNLOCK (reslock);
1102	}
1103
1104	quit:
1105	LOCK (wrklock);
1106	worker_free (self);
1107	UNLOCK (wrklock);
1108
1109	return 0;
1110	}
1111
1112	/*****************************************************************************/
1113
1114	static void atfork_prepare (void)
1115	{
1116	LOCK (wrklock);
1117	LOCK (reqlock);
1118	LOCK (reslock);
1119	#if !HAVE_PREADWRITE
1120	LOCK (preadwritelock);
1121	#endif
1122	#if !HAVE_READDIR_R
1123	LOCK (readdirlock);
1124	#endif
1125	}
1126
1127	static void atfork_parent (void)
1128	{
1129	#if !HAVE_READDIR_R
1130	UNLOCK (readdirlock);
1131	#endif
1132	#if !HAVE_PREADWRITE
1133	UNLOCK (preadwritelock);
1134	#endif
1135	UNLOCK (reslock);
1136	UNLOCK (reqlock);
1137	UNLOCK (wrklock);
1138	}	528	}
1139		529
1140	static void atfork_child (void)	530	static void atfork_child (void)
1141	{	531	{
1142	aio_req prv;
1143
1144	while (prv = reqq_shift (&req_queue))
1145	req_free (prv);
1146
1147	while (prv = reqq_shift (&res_queue))
1148	req_free (prv);
1149
1150	while (wrk_first.next != &wrk_first)
1151	{
1152	worker *wrk = wrk_first.next;
1153
1154	if (wrk->req)
1155	req_free (wrk->req);
1156
1157	worker_clear (wrk);
1158	worker_free (wrk);
1159	}
1160
1161	started = 0;
1162	idle = 0;
1163	nreqs = 0;
1164	nready = 0;
1165	npending = 0;
1166
1167	close (respipe [0]);
1168	close (respipe [1]);
1169	create_pipe ();	532	create_respipe ();
		533	}
1170		534
1171	atfork_parent ();	535	static SV *
		536	get_cb (SV *cb_sv)
		537	{
		538	SvGETMAGIC (cb_sv);
		539	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1172	}	540	}
1173		541
1174	#define dREQ \	542	#define dREQ \
		543	SV *cb_cv; \
1175	aio_req req; \	544	aio_req req; \
1176	int req_pri = next_pri; \	545	int req_pri = next_pri; \
1177	next_pri = DEFAULT_PRI + PRI_BIAS; \	546	next_pri = EIO_PRI_DEFAULT; \
1178	\	547	\
1179	if (SvOK (callback) && !SvROK (callback)) \	548	cb_cv = get_cb (callback); \
1180	croak ("callback must be undef or of reference type"); \
1181	\	549	\
1182	Newz (0, req, 1, aio_cb); \	550	Newz (0, req, 1, eio_req); \
1183	if (!req) \	551	if (!req) \
1184	croak ("out of memory during aio_req allocation"); \	552	croak ("out of memory during eio_req allocation"); \
1185	\	553	\
1186	req->callback = newSVsv (callback); \	554	req->callback = SvREFCNT_inc (cb_cv); \
1187	req->pri = req_pri	555	req->pri = req_pri
1188		556
1189	#define REQ_SEND \	557	#define REQ_SEND \
		558	PUTBACK; \
1190	req_send (req); \	559	req_submit (req); \
		560	SPAGAIN; \
1191	\	561	\
1192	if (GIMME_V != G_VOID) \	562	if (GIMME_V != G_VOID) \
1193	XPUSHs (req_sv (req, AIO_REQ_KLASS));	563	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1194		564
1195	MODULE = IO::AIO PACKAGE = IO::AIO	565	MODULE = IO::AIO PACKAGE = IO::AIO
1196		566
1197	PROTOTYPES: ENABLE	567	PROTOTYPES: ENABLE
1198		568
1199	BOOT:	569	BOOT:
1200	{	570	{
		571	static const struct {
		572	const char *name;
		573	IV iv;
		574	} *civ, const_iv[] = {
		575	# define const_iv(name, value) { # name, (IV) value },
		576	# define const_eio(name) { # name, (IV) EIO_ ## name },
		577	const_iv (EXDEV , EXDEV)
		578	const_iv (ENOSYS , ENOSYS)
		579	const_iv (O_RDONLY, O_RDONLY)
		580	const_iv (O_WRONLY, O_WRONLY)
		581	const_iv (O_CREAT , O_CREAT)
		582	const_iv (O_TRUNC , O_TRUNC)
		583	#ifndef _WIN32
		584	const_iv (S_IFIFO , S_IFIFO)
		585	#endif
		586	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		587	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		588	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		589	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		590	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		591	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		592
		593	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		594	const_eio (SYNC_FILE_RANGE_WRITE)
		595	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		596
		597	const_eio (READDIR_DENTS)
		598	const_eio (READDIR_DIRS_FIRST)
		599	const_eio (READDIR_STAT_ORDER)
		600	const_eio (READDIR_FOUND_UNKNOWN)
		601
		602	const_eio (DT_UNKNOWN)
		603	const_eio (DT_FIFO)
		604	const_eio (DT_CHR)
		605	const_eio (DT_DIR)
		606	const_eio (DT_BLK)
		607	const_eio (DT_REG)
		608	const_eio (DT_LNK)
		609	const_eio (DT_SOCK)
		610	const_eio (DT_WHT)
		611	};
		612
1201	HV *stash = gv_stashpv ("IO::AIO", 1);	613	stash = gv_stashpv ("IO::AIO", 1);
1202		614
1203	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	615	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1204	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	616	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1205	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1208	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1209		617
1210	create_pipe ();	618	create_respipe ();
1211	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	619
		620	if (eio_init (want_poll, done_poll) < 0)
		621	croak ("IO::AIO: unable to initialise eio library");
		622
		623	/* atfork child called in fifo order, so before eio's handler */
		624	X_THREAD_ATFORK (0, 0, atfork_child);
1212	}	625	}
		626
		627	void
		628	max_poll_reqs (int nreqs)
		629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_poll_reqs (nreqs);
		632
		633	void
		634	max_poll_time (double nseconds)
		635	PROTOTYPE: $
		636	CODE:
		637	eio_set_max_poll_time (nseconds);
1213		638
1214	void	639	void
1215	min_parallel (int nthreads)	640	min_parallel (int nthreads)
1216	PROTOTYPE: $	641	PROTOTYPE: $
		642	CODE:
		643	eio_set_min_parallel (nthreads);
1217		644
1218	void	645	void
1219	max_parallel (int nthreads)	646	max_parallel (int nthreads)
1220	PROTOTYPE: $	647	PROTOTYPE: $
		648	CODE:
		649	eio_set_max_parallel (nthreads);
1221		650
1222	int	651	void
		652	max_idle (int nthreads)
		653	PROTOTYPE: $
		654	CODE:
		655	eio_set_max_idle (nthreads);
		656
		657	void
1223	max_outstanding (int maxreqs)	658	max_outstanding (int maxreqs)
1224	PROTOTYPE: $	659	PROTOTYPE: $
1225	CODE:	660	CODE:
1226	RETVAL = max_outstanding;
1227	max_outstanding = maxreqs;	661	max_outstanding = maxreqs;
1228	OUTPUT:
1229	RETVAL
1230		662
1231	void	663	void
1232	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	664	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1233	SV * pathname
1234	int flags
1235	int mode
1236	SV * callback
1237	PROTOTYPE: $$$;$	665	PROTOTYPE: $$$;$
1238	PPCODE:	666	PPCODE:
1239	{	667	{
1240	dREQ;	668	dREQ;
1241		669
1242	req->type = REQ_OPEN;	670	req->type = EIO_OPEN;
1243	req->data = newSVsv (pathname);	671	req->sv1 = newSVsv (pathname);
1244	req->dataptr = SvPVbyte_nolen (req->data);	672	req->ptr1 = SvPVbyte_nolen (req->sv1);
1245	req->fd = flags;	673	req->int1 = flags;
1246	req->mode = mode;	674	req->int2 = mode;
1247		675
1248	REQ_SEND;	676	REQ_SEND;
1249	}	677	}
1250		678
1251	void	679	void
1252	aio_close (fh,callback=&PL_sv_undef)	680	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1253	SV * fh
1254	SV * callback
1255	PROTOTYPE: $;$	681	PROTOTYPE: $;$
1256	ALIAS:	682	ALIAS:
1257	aio_close = REQ_CLOSE
1258	aio_fsync = REQ_FSYNC	683	aio_fsync = EIO_FSYNC
1259	aio_fdatasync = REQ_FDATASYNC	684	aio_fdatasync = EIO_FDATASYNC
1260	PPCODE:	685	PPCODE:
1261	{	686	{
		687	int fd = s_fileno_croak (fh, 0);
1262	dREQ;	688	dREQ;
1263		689
1264	req->type = ix;	690	req->type = ix;
1265	req->fh = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = fd;
1267		693
1268	REQ_SEND (req);	694	REQ_SEND (req);
1269	}	695	}
1270		696
1271	void	697	void
		698	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $$$$;$
		700	PPCODE:
		701	{
		702	int fd = s_fileno_croak (fh, 0);
		703	dREQ;
		704
		705	req->type = EIO_SYNC_FILE_RANGE;
		706	req->sv1 = newSVsv (fh);
		707	req->int1 = fd;
		708	req->offs = offset;
		709	req->size = nbytes;
		710	req->int2 = flags;
		711
		712	REQ_SEND (req);
		713	}
		714
		715	void
		716	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		717	PROTOTYPE: $;$
		718	PPCODE:
		719	{
		720	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		721	int fd = s_fileno_croak (fh, 0);
		722	dREQ;
		723
		724	if (close_pipe < 0)
		725	{
		726	int pipefd [2];
		727
		728	if (pipe (pipefd) < 0
		729	|| close (pipefd [1]) < 0
		730	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		731	abort (); /*D*/
		732
		733	close_pipe = pipefd [0];
		734	}
		735
		736	req->type = EIO_DUP2;
		737	req->int1 = close_pipe;
		738	req->sv2 = newSVsv (fh);
		739	req->int2 = fd;
		740
		741	REQ_SEND (req);
		742	}
		743
		744	void
1272	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	745	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1273	SV * fh
1274	UV offset
1275	UV length
1276	SV * data
1277	UV dataoffset
1278	SV * callback
1279	ALIAS:	746	ALIAS:
1280	aio_read = REQ_READ	747	aio_read = EIO_READ
1281	aio_write = REQ_WRITE	748	aio_write = EIO_WRITE
1282	PROTOTYPE: $$$$$;$	749	PROTOTYPE: $$$$$;$
1283	PPCODE:	750	PPCODE:
1284	{	751	{
1285	aio_req req;
1286	STRLEN svlen;	752	STRLEN svlen;
		753	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1287	char *svptr = SvPVbyte (data, svlen);	754	char *svptr = SvPVbyte (data, svlen);
1288		755	UV len = SvUV (length);
1289	SvUPGRADE (data, SVt_PV);
1290	SvPOK_on (data);
1291		756
1292	if (dataoffset < 0)	757	if (dataoffset < 0)
1293	dataoffset += svlen;	758	dataoffset += svlen;
1294		759
1295	if (dataoffset < 0 || dataoffset > svlen)	760	if (dataoffset < 0 || dataoffset > svlen)
1296	croak ("data offset outside of string");	761	croak ("dataoffset outside of data scalar");
1297		762
1298	if (ix == REQ_WRITE)	763	if (ix == EIO_WRITE)
1299	{	764	{
1300	/* write: check length and adjust. */	765	/* write: check length and adjust. */
1301	if (length < 0 || length + dataoffset > svlen)	766	if (!SvOK (length) || len + dataoffset > svlen)
1302	length = svlen - dataoffset;	767	len = svlen - dataoffset;
1303	}	768	}
1304	else	769	else
1305	{	770	{
1306	/* read: grow scalar as necessary */	771	/* read: check type and grow scalar as necessary */
		772	SvUPGRADE (data, SVt_PV);
1307	svptr = SvGROW (data, length + dataoffset);	773	svptr = SvGROW (data, len + dataoffset + 1);
1308	}	774	}
1309
1310	if (length < 0)
1311	croak ("length must not be negative");
1312		775
1313	{	776	{
1314	dREQ;	777	dREQ;
1315		778
1316	req->type = ix;	779	req->type = ix;
1317	req->fh = newSVsv (fh);	780	req->sv1 = newSVsv (fh);
1318	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	781	req->int1 = fd;
1319	: IoOFP (sv_2io (fh)));	782	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320	req->offset = offset;	783	req->size = len;
1321	req->length = length;
1322	req->data = SvREFCNT_inc (data);	784	req->sv2 = SvREFCNT_inc (data);
1323	req->dataptr = (char *)svptr + dataoffset;	785	req->ptr2 = (char *)svptr + dataoffset;
		786	req->stroffset = dataoffset;
1324		787
1325	if (!SvREADONLY (data))	788	if (!SvREADONLY (data))
1326	{	789	{
1327	SvREADONLY_on (data);	790	SvREADONLY_on (data);
1328	req->data2ptr = (void *)data;	791	req->flags |= FLAG_SV2_RO_OFF;
1329	}	792	}
1330		793
1331	REQ_SEND;	794	REQ_SEND;
1332	}	795	}
1333	}	796	}
1334		797
1335	void	798	void
		799	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		800	PROTOTYPE: $$;$
		801	PPCODE:
		802	{
		803	SV *data;
		804	dREQ;
		805
		806	req->type = EIO_READLINK;
		807	req->sv1 = newSVsv (path);
		808	req->ptr1 = SvPVbyte_nolen (req->sv1);
		809
		810	REQ_SEND;
		811	}
		812
		813	void
1336	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	814	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1337	SV * out_fh
1338	SV * in_fh
1339	UV in_offset
1340	UV length
1341	SV * callback
1342	PROTOTYPE: $$$$;$	815	PROTOTYPE: $$$$;$
1343	PPCODE:	816	PPCODE:
1344	{	817	{
		818	int ifd = s_fileno_croak (in_fh , 0);
		819	int ofd = s_fileno_croak (out_fh, 1);
1345	dREQ;	820	dREQ;
1346		821
1347	req->type = REQ_SENDFILE;	822	req->type = EIO_SENDFILE;
1348	req->fh = newSVsv (out_fh);	823	req->sv1 = newSVsv (out_fh);
1349	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	824	req->int1 = ofd;
1350	req->fh2 = newSVsv (in_fh);	825	req->sv2 = newSVsv (in_fh);
1351	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	826	req->int2 = ifd;
1352	req->offset = in_offset;	827	req->offs = in_offset;
1353	req->length = length;	828	req->size = length;
1354		829
1355	REQ_SEND;	830	REQ_SEND;
1356	}	831	}
1357		832
1358	void	833	void
1359	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	834	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1360	SV * fh
1361	UV offset
1362	IV length
1363	SV * callback
1364	PROTOTYPE: $$$;$	835	PROTOTYPE: $$$;$
1365	PPCODE:	836	PPCODE:
1366	{	837	{
		838	int fd = s_fileno_croak (fh, 0);
1367	dREQ;	839	dREQ;
1368		840
1369	req->type = REQ_READAHEAD;	841	req->type = EIO_READAHEAD;
1370	req->fh = newSVsv (fh);	842	req->sv1 = newSVsv (fh);
1371	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	843	req->int1 = fd;
1372	req->offset = offset;	844	req->offs = offset;
1373	req->length = length;	845	req->size = length;
1374		846
1375	REQ_SEND;	847	REQ_SEND;
1376	}	848	}
1377		849
1378	void	850	void
1379	aio_stat (fh_or_path,callback=&PL_sv_undef)	851	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1380	SV * fh_or_path
1381	SV * callback
1382	ALIAS:	852	ALIAS:
1383	aio_stat = REQ_STAT	853	aio_stat = EIO_STAT
1384	aio_lstat = REQ_LSTAT	854	aio_lstat = EIO_LSTAT
1385	PPCODE:	855	PPCODE:
1386	{	856	{
1387	dREQ;	857	dREQ;
1388		858
1389	New (0, req->statdata, 1, Stat_t);	859	req->sv1 = newSVsv (fh_or_path);
1390	if (!req->statdata)
1391	{
1392	req_free (req);
1393	croak ("out of memory during aio_req->statdata allocation");
1394	}
1395		860
1396	if (SvPOK (fh_or_path))	861	if (SvPOK (req->sv1))
1397	{	862	{
1398	req->type = ix;	863	req->type = ix;
1399	req->data = newSVsv (fh_or_path);
1400	req->dataptr = SvPVbyte_nolen (req->data);	864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	}	865	}
1402	else	866	else
1403	{	867	{
1404	req->type = REQ_FSTAT;	868	req->type = EIO_FSTAT;
1405	req->fh = newSVsv (fh_or_path);
1406	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	869	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1407	}	870	}
1408		871
1409	REQ_SEND;	872	REQ_SEND;
1410	}	873	}
1411		874
1412	void	875	void
		876	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		877	PPCODE:
		878	{
		879	dREQ;
		880
		881	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		882	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		883	req->sv1 = newSVsv (fh_or_path);
		884
		885	if (SvPOK (req->sv1))
		886	{
		887	req->type = EIO_UTIME;
		888	req->ptr1 = SvPVbyte_nolen (req->sv1);
		889	}
		890	else
		891	{
		892	req->type = EIO_FUTIME;
		893	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		894	}
		895
		896	REQ_SEND;
		897	}
		898
		899	void
		900	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		901	PPCODE:
		902	{
		903	dREQ;
		904
		905	req->sv1 = newSVsv (fh_or_path);
		906	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		907
		908	if (SvPOK (req->sv1))
		909	{
		910	req->type = EIO_TRUNCATE;
		911	req->ptr1 = SvPVbyte_nolen (req->sv1);
		912	}
		913	else
		914	{
		915	req->type = EIO_FTRUNCATE;
		916	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		917	}
		918
		919	REQ_SEND;
		920	}
		921
		922	void
		923	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		924	ALIAS:
		925	aio_chmod = EIO_CHMOD
		926	aio_mkdir = EIO_MKDIR
		927	PPCODE:
		928	{
		929	dREQ;
		930
		931	req->int2 = mode;
		932	req->sv1 = newSVsv (fh_or_path);
		933
		934	if (SvPOK (req->sv1))
		935	{
		936	req->type = ix;
		937	req->ptr1 = SvPVbyte_nolen (req->sv1);
		938	}
		939	else
		940	{
		941	req->type = EIO_FCHMOD;
		942	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		943	}
		944
		945	REQ_SEND;
		946	}
		947
		948	void
		949	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		950	PPCODE:
		951	{
		952	dREQ;
		953
		954	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		955	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		956	req->sv1 = newSVsv (fh_or_path);
		957
		958	if (SvPOK (req->sv1))
		959	{
		960	req->type = EIO_CHOWN;
		961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962	}
		963	else
		964	{
		965	req->type = EIO_FCHOWN;
		966	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		967	}
		968
		969	REQ_SEND;
		970	}
		971
		972	void
		973	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		974	PPCODE:
		975	{
		976	dREQ;
		977
		978	req->type = EIO_READDIR;
		979	req->sv1 = newSVsv (pathname);
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		982
		983	if (flags & EIO_READDIR_DENTS)
		984	req->int1 |= EIO_READDIR_CUSTOM2;
		985
		986	REQ_SEND;
		987	}
		988
		989	void
1413	aio_unlink (pathname,callback=&PL_sv_undef)	990	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414	SV * pathname
1415	SV * callback
1416	ALIAS:	991	ALIAS:
1417	aio_unlink = REQ_UNLINK	992	aio_unlink = EIO_UNLINK
1418	aio_rmdir = REQ_RMDIR	993	aio_rmdir = EIO_RMDIR
1419	aio_readdir = REQ_READDIR	994	aio_readdir = EIO_READDIR
1420	PPCODE:	995	PPCODE:
1421	{	996	{
1422	dREQ;	997	dREQ;
1423		998
1424	req->type = ix;	999	req->type = ix;
1425	req->data = newSVsv (pathname);	1000	req->sv1 = newSVsv (pathname);
1426	req->dataptr = SvPVbyte_nolen (req->data);	1001	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1002
		1003	REQ_SEND;
		1004	}
		1005
		1006	void
		1007	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1008	ALIAS:
		1009	aio_link = EIO_LINK
		1010	aio_symlink = EIO_SYMLINK
		1011	aio_rename = EIO_RENAME
		1012	PPCODE:
		1013	{
		1014	dREQ;
		1015
		1016	req->type = ix;
		1017	req->sv1 = newSVsv (oldpath);
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	req->sv2 = newSVsv (newpath);
		1020	req->ptr2 = SvPVbyte_nolen (req->sv2);
1427		1021
1428	REQ_SEND;	1022	REQ_SEND;
1429	}	1023	}
1430		1024
1431	void	1025	void
1432	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1433	SV * oldpath
1434	SV * newpath
1435	SV * callback
1436	ALIAS:
1437	aio_link = REQ_LINK
1438	aio_symlink = REQ_SYMLINK
1439	aio_rename = REQ_RENAME
1440	PPCODE:	1027	PPCODE:
1441	{	1028	{
1442	dREQ;	1029	dREQ;
1443		1030
1444	req->type = ix;	1031	req->type = EIO_MKNOD;
1445	req->fh = newSVsv (oldpath);	1032	req->sv1 = newSVsv (pathname);
1446	req->data2ptr = SvPVbyte_nolen (req->fh);	1033	req->ptr1 = SvPVbyte_nolen (req->sv1);
1447	req->data = newSVsv (newpath);	1034	req->int2 = (mode_t)mode;
1448	req->dataptr = SvPVbyte_nolen (req->data);	1035	req->offs = dev;
1449		1036
1450	REQ_SEND;	1037	REQ_SEND;
1451	}	1038	}
1452		1039
1453	void	1040	void
1454	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1041	aio_busy (double delay, SV *callback=&PL_sv_undef)
1455	SV * pathname
1456	SV * callback
1457	UV mode
1458	UV dev
1459	PPCODE:	1042	PPCODE:
1460	{	1043	{
1461	dREQ;	1044	dREQ;
1462		1045
1463	req->type = REQ_MKNOD;	1046	req->type = EIO_BUSY;
1464	req->data = newSVsv (pathname);	1047	req->nv1 = delay < 0. ? 0. : delay;
1465	req->dataptr = SvPVbyte_nolen (req->data);	1048
1466	req->mode = (mode_t)mode;
1467	req->offset = dev;
1468
1469	REQ_SEND;	1049	REQ_SEND;
1470	}	1050	}
1471		1051
1472	void	1052	void
1473	aio_busy (delay,callback=&PL_sv_undef)
1474	double delay
1475	SV * callback
1476	PPCODE:
1477	{
1478	dREQ;
1479
1480	req->type = REQ_BUSY;
1481	req->fd = delay < 0. ? 0 : delay;
1482	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1483
1484	REQ_SEND;
1485	}
1486
1487	void
1488	aio_group (callback=&PL_sv_undef)	1053	aio_group (SV *callback=&PL_sv_undef)
1489	SV * callback
1490	PROTOTYPE: ;$	1054	PROTOTYPE: ;$
1491	PPCODE:	1055	PPCODE:
1492	{	1056	{
1493	dREQ;	1057	dREQ;
1494		1058
1495	req->type = REQ_GROUP;	1059	req->type = EIO_GROUP;
		1060
1496	req_send (req);	1061	req_submit (req);
1497
1498	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1062	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1499	}	1063	}
1500		1064
1501	void	1065	void
1502	aio_nop (callback=&PL_sv_undef)	1066	aio_nop (SV *callback=&PL_sv_undef)
1503	SV * callback	1067	ALIAS:
		1068	aio_nop = EIO_NOP
		1069	aio_sync = EIO_SYNC
1504	PPCODE:	1070	PPCODE:
1505	{	1071	{
1506	dREQ;	1072	dREQ;
1507		1073
1508	req->type = REQ_NOP;	1074	req->type = ix;
1509		1075
1510	REQ_SEND;	1076	REQ_SEND;
1511	}	1077	}
1512		1078
1513	int	1079	int
1514	aioreq_pri (int pri = 0)	1080	aioreq_pri (int pri = 0)
1515	PROTOTYPE: ;$	1081	PROTOTYPE: ;$
1516	CODE:	1082	CODE:
1517	RETVAL = next_pri - PRI_BIAS;	1083	RETVAL = next_pri;
1518	if (items > 0)	1084	if (items > 0)
1519	{	1085	{
1520	if (pri < PRI_MIN) pri = PRI_MIN;	1086	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521	if (pri > PRI_MAX) pri = PRI_MAX;	1087	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522	next_pri = pri + PRI_BIAS;	1088	next_pri = pri;
1523	}	1089	}
1524	OUTPUT:	1090	OUTPUT:
1525	RETVAL	1091	RETVAL
1526		1092
1527	void	1093	void
1528	aioreq_nice (int nice = 0)	1094	aioreq_nice (int nice = 0)
1529	CODE:	1095	CODE:
1530	nice = next_pri - nice;	1096	nice = next_pri - nice;
1531	if (nice < PRI_MIN) nice = PRI_MIN;	1097	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532	if (nice > PRI_MAX) nice = PRI_MAX;	1098	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533	next_pri = nice + PRI_BIAS;	1099	next_pri = nice;
1534		1100
1535	void	1101	void
1536	flush ()	1102	flush ()
1537	PROTOTYPE:	1103	PROTOTYPE:
1538	CODE:	1104	CODE:
1539	while (nreqs)	1105	while (eio_nreqs ())
1540	{	1106	{
1541	poll_wait ();	1107	poll_wait ();
1542	poll_cb (0);	1108	poll_cb ();
1543	}	1109	}
1544		1110
1545	void	1111	int
1546	poll()	1112	poll()
1547	PROTOTYPE:	1113	PROTOTYPE:
1548	CODE:	1114	CODE:
1549	if (nreqs)
1550	{
1551	poll_wait ();	1115	poll_wait ();
1552	poll_cb (0);	1116	RETVAL = poll_cb ();
1553	}	1117	OUTPUT:
		1118	RETVAL
1554		1119
1555	int	1120	int
1556	poll_fileno()	1121	poll_fileno()
1557	PROTOTYPE:	1122	PROTOTYPE:
1558	CODE:	1123	CODE:
…		…
1562		1127
1563	int	1128	int
1564	poll_cb(...)	1129	poll_cb(...)
1565	PROTOTYPE:	1130	PROTOTYPE:
1566	CODE:	1131	CODE:
1567	RETVAL = poll_cb (0);	1132	RETVAL = poll_cb ();
1568	OUTPUT:	1133	OUTPUT:
1569	RETVAL	1134	RETVAL
1570		1135
1571	int
1572	poll_some(int max = 0)
1573	PROTOTYPE: $
1574	CODE:
1575	RETVAL = poll_cb (max);
1576	OUTPUT:
1577	RETVAL
1578
1579	void	1136	void
1580	poll_wait()	1137	poll_wait()
1581	PROTOTYPE:	1138	PROTOTYPE:
1582	CODE:	1139	CODE:
1583	if (nreqs)
1584	poll_wait ();	1140	poll_wait ();
1585		1141
1586	int	1142	int
1587	nreqs()	1143	nreqs()
1588	PROTOTYPE:	1144	PROTOTYPE:
1589	CODE:	1145	CODE:
1590	RETVAL = nreqs;	1146	RETVAL = eio_nreqs ();
1591	OUTPUT:	1147	OUTPUT:
1592	RETVAL	1148	RETVAL
1593		1149
1594	int	1150	int
1595	nready()	1151	nready()
1596	PROTOTYPE:	1152	PROTOTYPE:
1597	CODE:	1153	CODE:
1598	RETVAL = get_nready ();	1154	RETVAL = eio_nready ();
1599	OUTPUT:	1155	OUTPUT:
1600	RETVAL	1156	RETVAL
1601		1157
1602	int	1158	int
1603	npending()	1159	npending()
1604	PROTOTYPE:	1160	PROTOTYPE:
1605	CODE:	1161	CODE:
1606	RETVAL = get_npending ();	1162	RETVAL = eio_npending ();
1607	OUTPUT:	1163	OUTPUT:
1608	RETVAL	1164	RETVAL
1609		1165
		1166	int
		1167	nthreads()
		1168	PROTOTYPE:
		1169	CODE:
		1170	RETVAL = eio_nthreads ();
		1171	OUTPUT:
		1172	RETVAL
		1173
		1174	int
		1175	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1176	PROTOTYPE: $$$$
		1177	CODE:
		1178	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1179	RETVAL = posix_fadvise (fh, offset, length, advice);
		1180	#else
		1181	RETVAL = errno = ENOSYS;
		1182	#endif
		1183	OUTPUT:
		1184	RETVAL
		1185
		1186	ssize_t
		1187	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1188	PROTOTYPE: $$$$
		1189	CODE:
		1190	eio_sendfile_sync (ofh, ifh, offset, count);
		1191
		1192	void _on_next_submit (SV *cb)
		1193	CODE:
		1194	SvREFCNT_dec (on_next_submit);
		1195	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1196
1610	PROTOTYPES: DISABLE	1197	PROTOTYPES: DISABLE
1611		1198
1612	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1199	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613		1200
1614	void	1201	void
1615	cancel (aio_req_ornot req)	1202	cancel (aio_req_ornot req)
1616	CODE:	1203	CODE:
1617	req_cancel (req);	1204	eio_cancel (req);
1618		1205
1619	void	1206	void
1620	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1207	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1621	CODE:	1208	PPCODE:
		1209	{
		1210	if (GIMME_V != G_VOID)
		1211	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1212
		1213	if (items > 1)
		1214	{
		1215	SV *cb_cv =get_cb (callback);
		1216
1622	SvREFCNT_dec (req->callback);	1217	SvREFCNT_dec (req->callback);
1623	req->callback = newSVsv (callback);	1218	req->callback = SvREFCNT_inc (cb_cv);
		1219	}
		1220	}
1624		1221
1625	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1222	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1626		1223
1627	void	1224	void
1628	add (aio_req grp, ...)	1225	add (aio_req grp, ...)
1629	PPCODE:	1226	PPCODE:
1630	{	1227	{
1631	int i;	1228	int i;
1632	aio_req req;
1633		1229
1634	if (grp->fd == 2)	1230	if (grp->int1 == 2)
1635	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1231	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1636		1232
1637	for (i = 1; i < items; ++i )	1233	for (i = 1; i < items; ++i )
1638	{	1234	{
		1235	aio_req req;
		1236
1639	if (GIMME_V != G_VOID)	1237	if (GIMME_V != G_VOID)
1640	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1238	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641		1239
1642	req = SvAIO_REQ (ST (i));	1240	req = SvAIO_REQ (ST (i));
1643		1241
1644	if (req)	1242	if (req)
1645	{	1243	eio_grp_add (grp, req);
1646	++grp->length;
1647	req->grp = grp;
1648
1649	req->grp_prev = 0;
1650	req->grp_next = grp->grp_first;
1651
1652	if (grp->grp_first)
1653	grp->grp_first->grp_prev = req;
1654
1655	grp->grp_first = req;
1656	}
1657	}	1244	}
1658	}	1245	}
1659		1246
1660	void	1247	void
1661	cancel_subs (aio_req_ornot req)	1248	cancel_subs (aio_req_ornot req)
…		…
1670	AV *av;	1257	AV *av;
1671		1258
1672	grp->errorno = errno;	1259	grp->errorno = errno;
1673		1260
1674	av = newAV ();	1261	av = newAV ();
		1262	av_extend (av, items - 1);
1675		1263
1676	for (i = 1; i < items; ++i )	1264	for (i = 1; i < items; ++i )
1677	av_push (av, newSVsv (ST (i)));	1265	av_push (av, newSVsv (ST (i)));
1678		1266
1679	SvREFCNT_dec (grp->data);	1267	SvREFCNT_dec (grp->sv1);
1680	grp->data = (SV *)av;	1268	grp->sv1 = (SV *)av;
1681	}	1269	}
1682		1270
1683	void	1271	void
1684	errno (aio_req grp, int errorno = errno)	1272	errno (aio_req grp, int errorno = errno)
1685	CODE:	1273	CODE:
1686	grp->errorno = errorno;	1274	grp->errorno = errorno;
1687		1275
1688	void	1276	void
1689	limit (aio_req grp, int limit)	1277	limit (aio_req grp, int limit)
1690	CODE:	1278	CODE:
1691	grp->fd2 = limit;	1279	eio_grp_limit (grp, limit);
1692	aio_grp_feed (grp);
1693		1280
1694	void	1281	void
1695	feed (aio_req grp, SV *callback=&PL_sv_undef)	1282	feed (aio_req grp, SV *callback=&PL_sv_undef)
1696	CODE:	1283	CODE:
1697	{	1284	{
1698	SvREFCNT_dec (grp->fh2);	1285	SvREFCNT_dec (grp->sv2);
1699	grp->fh2 = newSVsv (callback);	1286	grp->sv2 = newSVsv (callback);
		1287	grp->feed = aio_grp_feed;
1700		1288
1701	if (grp->fd2 <= 0)	1289	if (grp->int2 <= 0)
1702	grp->fd2 = 2;	1290	grp->int2 = 2;
1703		1291
1704	aio_grp_feed (grp);	1292	eio_grp_limit (grp, grp->int2);
1705	}	1293	}
1706		1294

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