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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.72 by root, Tue Oct 24 17:22:17 2006 UTC vs.
Revision 1.192 by root, Sun Jul 24 03:32:52 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
39	# include <sys/socket.h>	69	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	STRLEN stroffset; \
		113	SV *self;
		114
		115	#define EIO_NO_WRAPPERS 1
		116
		117	#include "libeio/config.h"
		118	#include "libeio/eio.h"
		119
		120	static int req_invoke (eio_req *req);
		121	#define EIO_FINISH(req) req_invoke (req)
		122	static void req_destroy (eio_req *grp);
		123	#define EIO_DESTROY(req) req_destroy (req)
		124
		125	#include "libeio/eio.c"
		126
		127	/* Linux/others */
		128	#ifndef O_ASYNC
		129	# define O_ASYNC 0
		130	#endif
		131	#ifndef O_DIRECT
		132	# define O_DIRECT 0
		133	#endif
		134	#ifndef O_NOATIME
		135	# define O_NOATIME 0
		136	#endif
		137
		138	/* POSIX */
		139	#ifndef O_CLOEXEC
		140	# define O_CLOEXEC 0
		141	#endif
		142	#ifndef O_NOFOLLOW
		143	# define O_NOFOLLOW 0
		144	#endif
		145	#ifndef O_NOCTTY
		146	# define O_NOCTTY 0
		147	#endif
		148	#ifndef O_NONBLOCK
		149	# define O_NONBLOCK 0
		150	#endif
		151	#ifndef O_EXEC
		152	# define O_EXEC 0
		153	#endif
		154	#ifndef O_SEARCH
		155	# define O_SEARCH 0
		156	#endif
		157	#ifndef O_DIRECTORY
		158	# define O_DIRECTORY 0
		159	#endif
		160	#ifndef O_DSYNC
		161	# define O_DSYNC 0
		162	#endif
		163	#ifndef O_RSYNC
		164	# define O_RSYNC 0
		165	#endif
		166	#ifndef O_SYNC
		167	# define O_SYNC 0
		168	#endif
		169	#ifndef O_TTY_INIT
		170	# define O_TTY_INIT 0
		171	#endif
		172
		173	#ifndef POSIX_FADV_NORMAL
		174	# define POSIX_FADV_NORMAL 0
		175	#endif
		176	#ifndef POSIX_FADV_SEQUENTIAL
		177	# define POSIX_FADV_SEQUENTIAL 0
		178	#endif
		179	#ifndef POSIX_FADV_RANDOM
		180	# define POSIX_FADV_RANDOM 0
		181	#endif
		182	#ifndef POSIX_FADV_NOREUSE
		183	# define POSIX_FADV_NOREUSE 0
		184	#endif
		185	#ifndef POSIX_FADV_WILLNEED
		186	# define POSIX_FADV_WILLNEED 0
		187	#endif
		188	#ifndef POSIX_FADV_DONTNEED
		189	# define POSIX_FADV_DONTNEED 0
		190	#endif
		191
		192	#if !HAVE_POSIX_FADVISE
		193	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		194	#endif
		195
		196	#ifndef POSIX_MADV_NORMAL
		197	# define POSIX_MADV_NORMAL 0
		198	#endif
		199	#ifndef POSIX_MADV_SEQUENTIAL
		200	# define POSIX_MADV_SEQUENTIAL 0
		201	#endif
		202	#ifndef POSIX_MADV_RANDOM
		203	# define POSIX_MADV_RANDOM 0
		204	#endif
		205	#ifndef POSIX_MADV_WILLNEED
		206	# define POSIX_MADV_WILLNEED 0
		207	#endif
		208	#ifndef POSIX_MADV_DONTNEED
		209	# define POSIX_MADV_DONTNEED 0
		210	#endif
		211
		212	#if !HAVE_POSIX_MADVISE
		213	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		214	#endif
		215
		216	#ifndef PROT_NONE
		217	# define PROT_NONE 0
		218	#endif
		219	#ifndef PROT_READ
		220	# define PROT_READ 0
		221	#endif
		222	#ifndef PROT_WRITE
		223	# define PROT_READ 0
		224	#endif
		225	#ifndef PROT_EXEC
		226	# define PROT_EXEC 0
		227	#endif
		228
		229	#ifndef ST_RDONLY
		230	# define ST_RDONLY 0
		231	#endif
		232	#ifndef ST_NOSUID
		233	# define ST_NOSUID 0
		234	#endif
		235	#ifndef ST_NODEV
		236	# define ST_NODEV 0
		237	#endif
		238	#ifndef ST_NOEXEC
		239	# define ST_NOEXEC 0
		240	#endif
		241	#ifndef ST_SYNCHRONOUS
		242	# define ST_SYNCHRONOUS 0
		243	#endif
		244	#ifndef ST_MANDLOCK
		245	# define ST_MANDLOCK 0
		246	#endif
		247	#ifndef ST_WRITE
		248	# define ST_WRITE 0
		249	#endif
		250	#ifndef ST_APPEND
		251	# define ST_APPEND 0
		252	#endif
		253	#ifndef ST_IMMUTABLE
		254	# define ST_IMMUTABLE 0
		255	#endif
		256	#ifndef ST_NOATIME
		257	# define ST_NOATIME 0
		258	#endif
		259	#ifndef ST_NODIRATIME
		260	# define ST_NODIRATIME 0
		261	#endif
		262	#ifndef ST_RELATIME
		263	# define ST_RELATIME 0
		264	#endif
		265
		266	#ifndef S_IFIFO
		267	# define S_IFIFO 0
		268	#endif
		269	#ifndef S_IFCHR
		270	# define S_IFCHR 0
		271	#endif
		272	#ifndef S_IFBLK
		273	# define S_IFBLK 0
		274	#endif
		275	#ifndef S_IFLNK
		276	# define S_IFLNK 0
		277	#endif
		278	#ifndef S_IFREG
		279	# define S_IFREG 0
		280	#endif
		281	#ifndef S_IFDIR
		282	# define S_IFDIR 0
		283	#endif
		284	#ifndef S_IFWHT
		285	# define S_IFWHT 0
		286	#endif
		287	#ifndef S_IFSOCK
		288	# define S_IFSOCK 0
		289	#endif
		290
		291	#ifndef MAP_ANONYMOUS
		292	# ifdef MAP_ANON
		293	# define MAP_ANONYMOUS MAP_ANON
42	# else	294	# else
43	# error sendfile support requested but not available	295	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	296	# endif
45	#endif	297	#endif
46		298	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	299	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	300	#endif
51		301	#ifndef MAP_LOCKED
52	#if __ia64	302	# define MAP_LOCKED 0
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif	303	#endif
		304	#ifndef MAP_NORESERVE
		305	# define MAP_NORESERVE 0
		306	#endif
		307	#ifndef MAP_POPULATE
		308	# define MAP_POPULATE 0
		309	#endif
		310	#ifndef MAP_NONBLOCK
		311	# define MAP_NONBLOCK 0
		312	#endif
59		313
60	/* buffer size for various temporary buffers */	314	#ifndef makedev
61	#define AIO_BUFSIZE 65536	315	# define makedev(maj,min) (((maj) << 8) | (min))
		316	#endif
		317	#ifndef major
		318	# define major(dev) ((dev) >> 8)
		319	#endif
		320	#ifndef minor
		321	# define minor(dev) ((dev) & 0xff)
		322	#endif
62		323
63	#define dBUF \	324	#ifndef PAGESIZE
64	char *aio_buf; \	325	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	326	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		327
71	enum {	328	enum {
72	REQ_QUIT,	329	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	330	};
84		331
85	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;
93	SV *fh, *fh2;
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;
101	int type;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
119		334
120	enum {	335	static SV *on_next_submit;
121	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;	337	static int max_outstanding;
134	static int respipe [2];
135		338
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	339	static s_epipe respipe;
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141		340
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	341	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
246		343
		344	static void want_poll (void)
		345	{
		346	/* write a dummy byte to the pipe so fh becomes ready */
		347	s_epipe_signal (&respipe);
		348	}
		349
		350	static void done_poll (void)
		351	{
		352	/* read any signals sent by the worker threads */
		353	s_epipe_drain (&respipe);
		354	}
		355
247	/* must be called at most once */	356	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
249	{	358	{
250	if (!req->self)	359	if (!req->self)
251	{	360	{
252	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	363	}
255		364
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	366	}
258		367
259	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
260	{	369	{
261	MAGIC *mg;	370	MAGIC *mg;
262		371
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	372	if (!SvROK (sv)
		373	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		374	&& SvSTASH (SvRV (sv)) != aio_req_stash
		375	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
265		377
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		379
268	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	381	}
270		382
271	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
272	{	384	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	385	if (grp->sv2 && SvOK (grp->sv2))
274	{	386	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	387	dSP;
280		388
281	ENTER;	389	ENTER;
282	SAVETMPS;	390	SAVETMPS;
283	PUSHMARK (SP);	391	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	393	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	395	SPAGAIN;
288	FREETMPS;	396	FREETMPS;
289	LEAVE;	397	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	398	}
300	}	399	}
301		400
302	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
303	{	402	{
304	--grp->length;	403	eio_submit (req);
305		404
306	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	406	{
312	req_invoke (grp);	407	dSP;
313	req_free (grp);	408	SV *cb = sv_2mortal (on_next_submit);
		409
		410	on_next_submit = 0;
		411
		412	PUSHMARK (SP);
		413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
314	}	415	}
315	}	416	}
316		417
317	static void poll_wait ()	418	static int req_invoke (eio_req *req)
318	{	419	{
319	fd_set rfd;	420	if (req->flags & FLAG_SV2_RO_OFF)
		421	SvREADONLY_off (req->sv2);
320		422
321	while (nreqs)	423	if (!EIO_CANCELLED (req) && req->callback)
322	{	424	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;	425	dSP;
345		426	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	427	SV *sv_result;
347	{
348	errno = req->errorno;
349		428
350	ENTER;	429	ENTER;
351	SAVETMPS;	430	SAVETMPS;
352	PUSHMARK (SP);	431	PUSHMARK (SP);
353	EXTEND (SP, 1);	432	EXTEND (SP, 1);
354		433
		434	/* do not recreate the result IV from scratch each time */
		435	if (expect_true (sv_result_cache))
		436	{
		437	sv_result = sv_result_cache; sv_result_cache = 0;
		438	SvIV_set (sv_result, req->result);
		439	SvIOK_only (sv_result);
		440	}
		441	else
		442	{
		443	sv_result = newSViv (req->result);
		444	SvREADONLY_on (sv_result);
		445	}
		446
355	switch (req->type)	447	switch (req->type)
356	{	448	{
357	case REQ_READDIR:	449	case EIO_READDIR:
358	{	450	{
359	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
360		452
361	if (req->result >= 0)	453	if (req->result >= 0)
362	{	454	{
363	int i;	455	int i;
364	char *buf = req->data2ptr;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	458	AV *av = newAV ();
366		459
367	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
368		461
369	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
370	{	463	{
371	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		467
		468	if (req->int1 & EIO_READDIR_CUSTOM2)
		469	{
		470	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		471	AV *avent = newAV ();
		472
		473	av_extend (avent, 2);
		474
		475	if (!sv_type [ent->type])
		476	{
		477	sv_type [ent->type] = newSViv (ent->type);
		478	SvREADONLY_on (sv_type [ent->type]);
		479	}
		480
		481	av_store (avent, 0, namesv);
		482	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		483	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		484
		485	av_store (av, i, newRV_noinc ((SV *)avent));
		486	}
		487	else
373	av_store (av, i, sv);	488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
		494	SV *name = newSVpv (names, 0);
		495	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
375	}	498	}
376		499
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	501	}
379		502
380	PUSHs (rv);	503	PUSHs (rv);
		504
		505	if (req->int1 & EIO_READDIR_CUSTOM1)
		506	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	507	}
382	break;	508	break;
383		509
384	case REQ_OPEN:	510	case EIO_OPEN:
385	{	511	{
386	/* convert fd to fh */	512	/* convert fd to fh */
387	SV *fh;	513	SV *fh = &PL_sv_undef;
388		514
389	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
390	PUTBACK;	516	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		519	char sym [64];
		520	int symlen;
		521
		522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		523	gv_init (gv, aio_stash, sym, symlen, 0);
393		524
394	fh = SvREFCNT_inc (POPs);	525	symlen = snprintf (
		526	sym,
		527	sizeof (sym),
		528	"%s&=%d",
		529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		530	(int)req->result
		531	);
395		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
396	PUSHMARK (SP);	537	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	538	}
399	break;	539	break;
400		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	#ifndef _WIN32
		547	if (req->result >= 0)
		548	{
		549	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		550	HV *hv = newHV ();
		551
		552	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		553
		554	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		555	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		556	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		557	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		558	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		559	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		560	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		561	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		562	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		563	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		564	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		565	}
		566	#endif
		567
		568	PUSHs (rv);
		569	}
		570
		571	break;
		572
401	case REQ_GROUP:	573	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	574	req->int1 = 2; /* mark group as finished */
403		575
404	if (req->data)	576	if (req->sv1)
405	{	577	{
406	int i;	578	int i;
407	AV *av = (AV *)req->data;	579	AV *av = (AV *)req->sv1;
408		580
409	EXTEND (SP, AvFILL (av) + 1);	581	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	582	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	583	PUSHs (*av_fetch (av, i, 0));
412	}	584	}
413	break;	585	break;
414		586
415	case REQ_NOP:	587	case EIO_NOP:
416	case REQ_BUSY:	588	case EIO_BUSY:
417	break;	589	break;
418		590
		591	case EIO_READLINK:
		592	case EIO_REALPATH:
		593	if (req->result > 0)
		594	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		595	break;
		596
		597	case EIO_STAT:
		598	case EIO_LSTAT:
		599	case EIO_FSTAT:
		600	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		601	PL_laststatval = req->result;
		602	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		603	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		604	PUSHs (sv_result);
		605	break;
		606
		607	case EIO_READ:
		608	{
		609	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		610	*SvEND (req->sv2) = 0;
		611	SvPOK_only (req->sv2);
		612	SvSETMAGIC (req->sv2);
		613	PUSHs (sv_result);
		614	}
		615	break;
		616
		617	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		618	if (req->result > 0)
		619	SvIV_set (sv_result, 0);
		620	/* FALLTHROUGH */
		621
419	default:	622	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	623	PUSHs (sv_result);
421	break;	624	break;
422	}	625	}
423		626
		627	errno = req->errorno;
424		628
425	PUTBACK;	629	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	630	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	631	SPAGAIN;
		632
		633	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		634	SvREFCNT_dec (sv_result);
		635	else
		636	sv_result_cache = sv_result;
428		637
429	FREETMPS;	638	FREETMPS;
430	LEAVE;	639	LEAVE;
		640
		641	PUTBACK;
431	}	642	}
432		643
433	if (req->grp)	644	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	645	}
453		646
454	static void req_free (aio_req req)	647	static void req_destroy (aio_req req)
455	{	648	{
456	if (req->self)	649	if (req->self)
457	{	650	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	651	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	652	SvREFCNT_dec (req->self);
460	}	653	}
461		654
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	655	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	656	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		658
471	Safefree (req);	659	Safefree (req);
472	}	660	}
473		661
474	static void req_cancel_subs (aio_req grp)	662	static void req_cancel_subs (aio_req grp)
475	{	663	{
476	aio_req sub;
477
478	if (grp->type != REQ_GROUP)	664	if (grp->type != EIO_GROUP)
479	return;	665	return;
480		666
481	SvREFCNT_dec (grp->fh2);	667	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	668	grp->sv2 = 0;
483		669
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	670	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	671	}
487		672
488	static void req_cancel (aio_req req)	673	static void create_respipe (void)
489	{	674	{
490	req->flags |= FLAG_CANCELLED;	675	if (s_epipe_renew (&respipe))
491		676	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	677	}
494		678
		679	static void poll_wait (void)
		680	{
		681	while (eio_nreqs ())
		682	{
		683	int size;
		684
		685	X_LOCK (reslock);
		686	size = res_queue.size;
		687	X_UNLOCK (reslock);
		688
		689	if (size)
		690	return;
		691
		692	etp_maybe_start_thread ();
		693
		694	s_epipe_wait (&respipe);
		695	}
		696	}
		697
495	static int poll_cb ()	698	static int poll_cb (void)
496	{	699	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	700	for (;;)
503	{	701	{
504	LOCK (reslock);	702	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		703
507	if (req)	704	if (res > 0)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;	705	croak (0);
522		706
523	--nreqs;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
		708	return res;
524		709
525	if (req->type == REQ_QUIT)	710	poll_wait ();
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	711	}
554
555	return count;
556	}	712	}
557		713
558	static void *aio_proc(void *arg);	714	static void ecb_cold
559		715	reinit (void)
560	static void start_thread (void)
561	{	716	{
562	worker *wrk = calloc (1, sizeof (worker));	717	create_respipe ();
563		718
564	if (!wrk)	719	if (eio_init (want_poll, done_poll) < 0)
565	croak ("unable to allocate worker thread data");	720	croak ("IO::AIO: unable to initialise eio library");
566
567	sigset_t fullsigset, oldsigset;
568	pthread_attr_t attr;
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{
581	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;
585	started++;
586	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}
593
594	static void req_send (aio_req req)
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598
599	++nreqs;
600
601	LOCK (reqlock);
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605
606	if (nreqs > max_outstanding)
607	for (;;)
608	{
609	poll_cb ();
610
611	if (nreqs <= max_outstanding)
612	break;
613
614	poll_wait ();
615	}
616	}
617
618	static void end_thread (void)
619	{
620	aio_req req;
621
622	Newz (0, req, 1, aio_cb);
623
624	req->type = REQ_QUIT;
625	req->pri = PRI_MAX + PRI_BIAS;
626
627	req_send (req);
628	}
629
630	static void min_parallel (int nthreads)
631	{
632	if (wanted < nthreads)
633	wanted = nthreads;
634	}
635
636	static void max_parallel (int nthreads)
637	{
638	int cur = started;
639
640	if (wanted > nthreads)
641	wanted = nthreads;
642
643	while (cur > wanted)
644	{
645	end_thread ();
646	cur--;
647	}
648
649	while (started > wanted)
650	{
651	poll_wait ();
652	poll_cb ();
653	}
654	}
655
656	static void create_pipe ()
657	{
658	if (pipe (respipe))
659	croak ("unable to initialize result pipe");
660
661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
662	croak ("cannot set result pipe to nonblocking mode");
663
664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
665	croak ("cannot set result pipe to nonblocking mode");
666	}	721	}
667		722
668	/*****************************************************************************/	723	/*****************************************************************************/
669	/* work around various missing functions */
670		724
671	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
672	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
673	# define pwrite aio_pwrite	727	# define munmap(addr,length) (errno = ENOSYS, -1)
674
675	/*
676	* make our pread/pwrite safe against themselves, but not against
677	* normal read/write by using a mutex. slows down execution a lot,
678	* but that's your problem, not mine.
679	*/
680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681
682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
683	{
684	ssize_t res;
685	off_t ooffset;
686
687	LOCK (preadwritelock);
688	ooffset = lseek (fd, 0, SEEK_CUR);
689	lseek (fd, offset, SEEK_SET);
690	res = read (fd, buf, count);
691	lseek (fd, ooffset, SEEK_SET);
692	UNLOCK (preadwritelock);
693
694	return res;
695	}
696
697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
698	{
699	ssize_t res;
700	off_t ooffset;
701
702	LOCK (preadwritelock);
703	ooffset = lseek (fd, 0, SEEK_CUR);
704	lseek (fd, offset, SEEK_SET);
705	res = write (fd, buf, count);
706	lseek (fd, offset, SEEK_SET);
707	UNLOCK (preadwritelock);
708
709	return res;
710	}
711	#endif
712
713	#if !HAVE_FDATASYNC
714	# define fdatasync fsync
715	#endif
716
717	#if !HAVE_READAHEAD
718	# define readahead aio_readahead
719
720	static ssize_t readahead (int fd, off_t offset, size_t count)
721	{
722	dBUF;
723
724	while (count > 0)
725	{
726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
727
728	pread (fd, aio_buf, len, offset);
729	offset += len;
730	count -= len;
731	}
732
733	errno = 0;
734	}
735	#endif
736
737	#if !HAVE_READDIR_R
738	# define readdir_r aio_readdir_r
739
740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
741
742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
743	{
744	struct dirent *e;
745	int errorno;
746
747	LOCK (readdirlock);
748
749	e = readdir (dirp);
750	errorno = errno;
751
752	if (e)
753	{
754	*res = ent;
755	strcpy (ent->d_name, e->d_name);
756	}
757	else
758	*res = 0;
759
760	UNLOCK (readdirlock);
761
762	errno = errorno;
763	return e ? 0 : -1;
764	}
765	#endif
766
767	/* sendfile always needs emulation */
768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
769	{
770	ssize_t res;
771
772	if (!count)
773	return 0;
774
775	#if HAVE_SENDFILE
776	# if __linux
777	res = sendfile (ofd, ifd, &offset, count);
778
779	# elif __freebsd
780	/*
781	* Of course, the freebsd sendfile is a dire hack with no thoughts
782	* wasted on making it similar to other I/O functions.
783	*/
784	{
785	off_t sbytes;
786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787
788	if (res < 0 && sbytes)
789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
790	res = sbytes;
791	}
792
793	# elif __hpux
794	res = sendfile (ofd, ifd, offset, count, 0, 0);
795
796	# elif __solaris
797	{
798	struct sendfilevec vec;
799	size_t sbytes;
800
801	vec.sfv_fd = ifd;
802	vec.sfv_flag = 0;
803	vec.sfv_off = offset;
804	vec.sfv_len = count;
805
806	res = sendfilev (ofd, &vec, 1, &sbytes);
807
808	if (res < 0 && sbytes)
809	res = sbytes;
810	}
811
812	# endif	728	#endif
813	#else
814	res = -1;
815	errno = ENOSYS;
816	#endif
817		729
818	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
820	#if __solaris	732	# define PROT_NONE 0
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
822	#endif	737	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828		738
829	res = 0;	739	#define MMAP_MAGIC PERL_MAGIC_ext
830		740
831	while (count)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
832	{	742	{
833	ssize_t cnt;	743	int old_errno = errno;
834		744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	745	errno = old_errno;
836		746
837	if (cnt <= 0)	747	mg->mg_obj = 0; /* just in case */
838	{
839	if (cnt && !res) res = -1;
840	break;
841	}
842		748
843	cnt = write (ofd, aio_buf, cnt);	749	SvREADONLY_off (sv);
844		750
845	if (cnt <= 0)	751	if (SvPVX (sv) != mg->mg_ptr)
846	{	752	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
847	if (cnt && !res) res = -1;
848	break;
849	}
850		753
851	offset += cnt;	754	SvCUR_set (sv, 0);
852	res += cnt;	755	SvPVX (sv) = 0;
853	count -= cnt;	756	SvOK_off (sv);
854	}
855	}
856		757
857	return res;	758	return 0;
858	}	759	}
859		760
860	/* read a full directory */	761	static MGVTBL mmap_vtbl = {
861	static void scandir_ (aio_req req, worker *self)	762	0, 0, 0, 0, mmap_free
862	{	763	};
863	DIR *dirp;
864	union
865	{
866	struct dirent d;
867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
868	} *u;
869	struct dirent *entp;
870	char *name, *names;
871	int memlen = 4096;
872	int memofs = 0;
873	int res = 0;
874	int errorno;
875
876	LOCK (wrklock);
877	self->dirp = dirp = opendir (req->dataptr);
878	self->dbuf = u = malloc (sizeof (*u));
879	UNLOCK (wrklock);
880
881	req->data2ptr = names = malloc (memlen);
882
883	if (dirp && u && names)
884	for (;;)
885	{
886	errno = 0;
887	readdir_r (dirp, &u->d, &entp);
888
889	if (!entp)
890	break;
891
892	name = entp->d_name;
893
894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
895	{
896	int len = strlen (name) + 1;
897
898	res++;
899
900	while (memofs + len > memlen)
901	{
902	memlen *= 2;
903	LOCK (wrklock);
904	req->data2ptr = names = realloc (names, memlen);
905	UNLOCK (wrklock);
906
907	if (!names)
908	break;
909	}
910
911	memcpy (names + memofs, name, len);
912	memofs += len;
913	}
914	}
915
916	if (errno)
917	res = -1;
918
919	req->result = res;
920	}
921		764
922	/*****************************************************************************/	765	/*****************************************************************************/
923		766
924	static void *aio_proc (void *thr_arg)	767	static SV * get_cb (SV *cb_sv)
925	{	768	{
926	aio_req req;	769	SvGETMAGIC (cb_sv);
927	int type;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
928	worker *self = (worker *)thr_arg;
929
930	do
931	{
932	LOCK (reqlock);
933
934	for (;;)
935	{
936	self->req = req = reqq_shift (&req_queue);
937
938	if (req)
939	break;
940
941	pthread_cond_wait (&reqwait, &reqlock);
942	}
943
944	UNLOCK (reqlock);
945
946	errno = 0; /* strictly unnecessary */
947	type = req->type; /* remember type for QUIT check */
948
949	if (!(req->flags & FLAG_CANCELLED))
950	switch (type)
951	{
952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
954
955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
957
958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
961
962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
963	case REQ_CLOSE: req->result = close (req->fd); break;
964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
969
970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
971	case REQ_FSYNC: req->result = fsync (req->fd); break;
972	case REQ_READDIR: scandir_ (req, self); break;
973
974	case REQ_BUSY:
975	{
976	struct timeval tv;
977
978	tv.tv_sec = req->fd;
979	tv.tv_usec = req->fd2;
980
981	req->result = select (0, 0, 0, 0, &tv);
982	}
983
984	case REQ_GROUP:
985	case REQ_NOP:
986	case REQ_QUIT:
987	break;
988
989	default:
990	req->result = ENOSYS;
991	break;
992	}
993
994	req->errorno = errno;
995
996	LOCK (reslock);
997
998	if (!reqq_push (&res_queue, req))
999	/* write a dummy byte to the pipe so fh becomes ready */
1000	write (respipe [1], &respipe, 1);
1001
1002	self->req = 0;
1003	worker_clear (self);
1004
1005	UNLOCK (reslock);
1006	}
1007	while (type != REQ_QUIT);
1008
1009	LOCK (wrklock);
1010	worker_free (self);
1011	UNLOCK (wrklock);
1012
1013	return 0;
1014	}
1015
1016	/*****************************************************************************/
1017
1018	static void atfork_prepare (void)
1019	{
1020	LOCK (wrklock);
1021	LOCK (reqlock);
1022	LOCK (reslock);
1023	#if !HAVE_PREADWRITE
1024	LOCK (preadwritelock);
1025	#endif
1026	#if !HAVE_READDIR_R
1027	LOCK (readdirlock);
1028	#endif
1029	}
1030
1031	static void atfork_parent (void)
1032	{
1033	#if !HAVE_READDIR_R
1034	UNLOCK (readdirlock);
1035	#endif
1036	#if !HAVE_PREADWRITE
1037	UNLOCK (preadwritelock);
1038	#endif
1039	UNLOCK (reslock);
1040	UNLOCK (reqlock);
1041	UNLOCK (wrklock);
1042	}
1043
1044	static void atfork_child (void)
1045	{
1046	aio_req prv;
1047
1048	while (prv = reqq_shift (&req_queue))
1049	req_free (prv);
1050
1051	while (prv = reqq_shift (&res_queue))
1052	req_free (prv);
1053
1054	while (wrk_first.next != &wrk_first)
1055	{
1056	worker *wrk = wrk_first.next;
1057
1058	if (wrk->req)
1059	req_free (wrk->req);
1060
1061	worker_clear (wrk);
1062	worker_free (wrk);
1063	}
1064
1065	started = 0;
1066	nreqs = 0;
1067
1068	close (respipe [0]);
1069	close (respipe [1]);
1070	create_pipe ();
1071
1072	atfork_parent ();
1073	}	771	}
1074		772
1075	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
1076	aio_req req; \	775	aio_req req; \
1077	int req_pri = next_pri; \	776	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \	777	next_pri = EIO_PRI_DEFAULT; \
1079	\	778	\
1080	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
1081	croak ("callback must be undef or of reference type"); \
1082	\	780	\
1083	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
1084	if (!req) \	782	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
1086	\	784	\
1087	req->callback = newSVsv (callback); \	785	req->callback = SvREFCNT_inc (cb_cv); \
1088	req->pri = req_pri	786	req->pri = req_pri
1089		787
1090	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
1091	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
1092	\	792	\
1093	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
1095		795
1096	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
1097		797
1098	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
1099		799
1100	BOOT:	800	BOOT:
1101	{	801	{
		802	static const struct {
		803	const char *name;
		804	IV iv;
		805	} *civ, const_iv[] = {
		806	# define const_niv(name, value) { # name, (IV) value },
		807	# define const_iv(name) { # name, (IV) name },
		808	# define const_eio(name) { # name, (IV) EIO_ ## name },
		809	const_iv (EXDEV)
		810	const_iv (ENOSYS)
		811	const_iv (O_RDONLY)
		812	const_iv (O_WRONLY)
		813	const_iv (O_RDWR)
		814	const_iv (O_CREAT)
		815	const_iv (O_TRUNC)
		816	const_iv (O_EXCL)
		817	const_iv (O_APPEND)
		818
		819	const_iv (O_ASYNC)
		820	const_iv (O_DIRECT)
		821	const_iv (O_NOATIME)
		822
		823	const_iv (O_CLOEXEC)
		824	const_iv (O_NOCTTY)
		825	const_iv (O_NOFOLLOW)
		826	const_iv (O_NONBLOCK)
		827	const_iv (O_EXEC)
		828	const_iv (O_SEARCH)
		829	const_iv (O_DIRECTORY)
		830	const_iv (O_DSYNC)
		831	const_iv (O_RSYNC)
		832	const_iv (O_SYNC)
		833	const_iv (O_TTY_INIT)
		834
		835	const_iv (S_IFIFO)
		836	const_iv (S_IFCHR)
		837	const_iv (S_IFBLK)
		838	const_iv (S_IFLNK)
		839	const_iv (S_IFREG)
		840	const_iv (S_IFDIR)
		841	const_iv (S_IFWHT)
		842	const_iv (S_IFSOCK)
		843	const_iv (S_IFMT)
		844
		845	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		846	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		847	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		848	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		849	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		850	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		851
		852	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		853	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		854	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		855	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		856	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		857
		858	const_iv (ST_RDONLY)
		859	const_iv (ST_NOSUID)
		860	const_iv (ST_NODEV)
		861	const_iv (ST_NOEXEC)
		862	const_iv (ST_SYNCHRONOUS)
		863	const_iv (ST_MANDLOCK)
		864	const_iv (ST_WRITE)
		865	const_iv (ST_APPEND)
		866	const_iv (ST_IMMUTABLE)
		867	const_iv (ST_NOATIME)
		868	const_iv (ST_NODIRATIME)
		869	const_iv (ST_RELATIME)
		870
		871	const_iv (PROT_NONE)
		872	const_iv (PROT_EXEC)
		873	const_iv (PROT_READ)
		874	const_iv (PROT_WRITE)
		875
		876	/*const_iv (MAP_FIXED)*/
		877	const_iv (MAP_PRIVATE)
		878	const_iv (MAP_SHARED)
		879	const_iv (MAP_ANONYMOUS)
		880
		881	/* linuxish */
		882	const_iv (MAP_HUGETLB)
		883	const_iv (MAP_LOCKED)
		884	const_iv (MAP_NORESERVE)
		885	const_iv (MAP_POPULATE)
		886	const_iv (MAP_NONBLOCK)
		887
		888	const_eio (MCL_FUTURE)
		889	const_eio (MCL_CURRENT)
		890
		891	const_eio (MS_ASYNC)
		892	const_eio (MS_INVALIDATE)
		893	const_eio (MS_SYNC)
		894
		895	const_eio (MT_MODIFY)
		896
		897	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		898	const_eio (SYNC_FILE_RANGE_WRITE)
		899	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		900
		901	const_eio (FALLOC_FL_KEEP_SIZE)
		902
		903	const_eio (READDIR_DENTS)
		904	const_eio (READDIR_DIRS_FIRST)
		905	const_eio (READDIR_STAT_ORDER)
		906	const_eio (READDIR_FOUND_UNKNOWN)
		907
		908	const_eio (DT_UNKNOWN)
		909	const_eio (DT_FIFO)
		910	const_eio (DT_CHR)
		911	const_eio (DT_DIR)
		912	const_eio (DT_BLK)
		913	const_eio (DT_REG)
		914	const_eio (DT_LNK)
		915	const_eio (DT_SOCK)
		916	const_eio (DT_WHT)
		917	};
		918
1102	HV *stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106		922
1107	create_pipe ();	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1109	}
1110		925
		926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		927
		928	reinit ();
		929	}
		930
1111	void	931	void
1112	min_parallel (nthreads)	932	reinit ()
1113	int nthreads	933	PROTOTYPE:
		934	CODE:
		935	reinit ();
		936
		937	void
		938	max_poll_reqs (unsigned int nreqs)
1114	PROTOTYPE: $	939	PROTOTYPE: $
		940	CODE:
		941	eio_set_max_poll_reqs (nreqs);
1115		942
1116	void	943	void
1117	max_parallel (nthreads)	944	max_poll_time (double nseconds)
1118	int nthreads
1119	PROTOTYPE: $	945	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:	946	CODE:
1126	RETVAL = max_outstanding;	947	eio_set_max_poll_time (nseconds);
		948
		949	void
		950	min_parallel (unsigned int nthreads)
		951	PROTOTYPE: $
		952	CODE:
		953	eio_set_min_parallel (nthreads);
		954
		955	void
		956	max_parallel (unsigned int nthreads)
		957	PROTOTYPE: $
		958	CODE:
		959	eio_set_max_parallel (nthreads);
		960
		961	void
		962	max_idle (unsigned int nthreads)
		963	PROTOTYPE: $
		964	CODE:
		965	eio_set_max_idle (nthreads);
		966
		967	void
		968	idle_timeout (unsigned int seconds)
		969	PROTOTYPE: $
		970	CODE:
		971	eio_set_idle_timeout (seconds);
		972
		973	void
		974	max_outstanding (unsigned int maxreqs)
		975	PROTOTYPE: $
		976	CODE:
1127	max_outstanding = nreqs;	977	max_outstanding = maxreqs;
1128		978
1129	void	979	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	980	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$
1136	PPCODE:	981	PPCODE:
1137	{	982	{
1138	dREQ;	983	dREQ;
1139		984
1140	req->type = REQ_OPEN;	985	req->type = EIO_OPEN;
1141	req->data = newSVsv (pathname);	986	req->sv1 = newSVsv (pathname);
1142	req->dataptr = SvPVbyte_nolen (req->data);	987	req->ptr1 = SvPVbyte_nolen (req->sv1);
1143	req->fd = flags;	988	req->int1 = flags;
1144	req->mode = mode;	989	req->int2 = mode;
1145		990
1146	REQ_SEND;	991	REQ_SEND;
1147	}	992	}
1148		993
1149	void	994	void
1150	aio_close (fh,callback=&PL_sv_undef)	995	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$
1154	ALIAS:	996	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC	997	aio_fsync = EIO_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = EIO_FDATASYNC
		999	aio_syncfs = EIO_SYNCFS
1158	PPCODE:	1000	PPCODE:
1159	{	1001	{
		1002	int fd = s_fileno_croak (fh, 0);
1160	dREQ;	1003	dREQ;
1161		1004
1162	req->type = ix;	1005	req->type = ix;
1163	req->fh = newSVsv (fh);	1006	req->sv1 = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1007	req->int1 = fd;
1165		1008
1166	REQ_SEND (req);	1009	REQ_SEND (req);
1167	}	1010	}
1168		1011
1169	void	1012	void
		1013	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_SYNC_FILE_RANGE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->offs = offset;
		1023	req->size = nbytes;
		1024	req->int2 = flags;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	int fd = s_fileno_croak (fh, 0);
		1034	dREQ;
		1035
		1036	req->type = EIO_FALLOCATE;
		1037	req->sv1 = newSVsv (fh);
		1038	req->int1 = fd;
		1039	req->int2 = mode;
		1040	req->offs = offset;
		1041	req->size = len;
		1042
		1043	REQ_SEND (req);
		1044	}
		1045
		1046	void
		1047	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1048	PPCODE:
		1049	{
		1050	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1051	int fd = s_fileno_croak (fh, 0);
		1052	dREQ;
		1053
		1054	if (expect_false (close_fd < 0))
		1055	{
		1056	int pipefd [2];
		1057
		1058	if (
		1059	#ifdef _WIN32
		1060	_pipe (pipefd, 1, _O_BINARY) < 0
		1061	#else
		1062	pipe (pipefd) < 0
		1063	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1064	#endif
		1065	|| close (pipefd [1]) < 0
		1066	)
		1067	abort (); /*D*/
		1068
		1069	close_fd = pipefd [0];
		1070	}
		1071
		1072	req->type = EIO_DUP2;
		1073	req->int1 = close_fd;
		1074	req->sv2 = newSVsv (fh);
		1075	req->int2 = fd;
		1076
		1077	REQ_SEND (req);
		1078	}
		1079
		1080	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1081	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1171	SV * fh
1172	UV offset
1173	UV length
1174	SV * data
1175	UV dataoffset
1176	SV * callback
1177	ALIAS:	1082	ALIAS:
1178	aio_read = REQ_READ	1083	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	1084	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$
1181	PPCODE:	1085	PPCODE:
1182	{	1086	{
1183	aio_req req;
1184	STRLEN svlen;	1087	STRLEN svlen;
		1088	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	1089	char *svptr = SvPVbyte (data, svlen);
1186		1090	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		1091
1190	if (dataoffset < 0)	1092	if (dataoffset < 0)
1191	dataoffset += svlen;	1093	dataoffset += svlen;
1192		1094
1193	if (dataoffset < 0 || dataoffset > svlen)	1095	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	1096	croak ("dataoffset outside of data scalar");
1195		1097
1196	if (ix == REQ_WRITE)	1098	if (ix == EIO_WRITE)
1197	{	1099	{
1198	/* write: check length and adjust. */	1100	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	1101	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	1102	len = svlen - dataoffset;
1201	}	1103	}
1202	else	1104	else
1203	{	1105	{
1204	/* read: grow scalar as necessary */	1106	/* read: check type and grow scalar as necessary */
		1107	SvUPGRADE (data, SVt_PV);
1205	svptr = SvGROW (data, length + dataoffset);	1108	svptr = SvGROW (data, len + dataoffset + 1);
1206	}	1109	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		1110
1211	{	1111	{
1212	dREQ;	1112	dREQ;
1213		1113
1214	req->type = ix;	1114	req->type = ix;
1215	req->fh = newSVsv (fh);	1115	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1116	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	1117	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	1118	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	1119	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	1120	req->ptr2 = (char *)svptr + dataoffset;
		1121	req->stroffset = dataoffset;
1222		1122
1223	if (!SvREADONLY (data))	1123	if (!SvREADONLY (data))
1224	{	1124	{
1225	SvREADONLY_on (data);	1125	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	1126	req->flags |= FLAG_SV2_RO_OFF;
1227	}	1127	}
1228		1128
1229	REQ_SEND;	1129	REQ_SEND;
1230	}	1130	}
1231	}	1131	}
1232		1132
1233	void	1133	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1134	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1235	SV * out_fh	1135	ALIAS:
1236	SV * in_fh	1136	aio_readlink = EIO_READLINK
1237	UV in_offset	1137	aio_realpath = EIO_REALPATH
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$
1241	PPCODE:	1138	PPCODE:
1242	{	1139	{
		1140	dREQ;
		1141
		1142	req->type = ix;
		1143	req->sv1 = newSVsv (path);
		1144	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1145
		1146	REQ_SEND;
		1147	}
		1148
		1149	void
		1150	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1151	PPCODE:
		1152	{
		1153	int ifd = s_fileno_croak (in_fh , 0);
		1154	int ofd = s_fileno_croak (out_fh, 1);
1243	dREQ;	1155	dREQ;
1244		1156
1245	req->type = REQ_SENDFILE;	1157	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	1158	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1159	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	1160	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1161	req->int2 = ifd;
1250	req->offset = in_offset;	1162	req->offs = in_offset;
1251	req->length = length;	1163	req->size = length;
1252		1164
1253	REQ_SEND;	1165	REQ_SEND;
1254	}	1166	}
1255		1167
1256	void	1168	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1169	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$
1263	PPCODE:	1170	PPCODE:
1264	{	1171	{
		1172	int fd = s_fileno_croak (fh, 0);
1265	dREQ;	1173	dREQ;
1266		1174
1267	req->type = REQ_READAHEAD;	1175	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	1176	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1177	req->int1 = fd;
1270	req->offset = offset;	1178	req->offs = offset;
1271	req->length = length;	1179	req->size = length;
1272		1180
1273	REQ_SEND;	1181	REQ_SEND;
1274	}	1182	}
1275		1183
1276	void	1184	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	1185	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	1186	ALIAS:
1281	aio_stat = REQ_STAT	1187	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	1188	aio_lstat = EIO_LSTAT
		1189	aio_statvfs = EIO_STATVFS
1283	PPCODE:	1190	PPCODE:
1284	{	1191	{
1285	dREQ;	1192	dREQ;
1286		1193
1287	New (0, req->statdata, 1, Stat_t);	1194	req->sv1 = newSVsv (fh_or_path);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293		1195
1294	if (SvPOK (fh_or_path))	1196	if (SvPOK (req->sv1))
1295	{	1197	{
1296	req->type = ix;	1198	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);	1199	req->ptr1 = SvPVbyte_nolen (req->sv1);
1299	}	1200	}
1300	else	1201	else
1301	{	1202	{
1302	req->type = REQ_FSTAT;	1203	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1303	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1204	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}	1205	}
1306		1206
1307	REQ_SEND;	1207	REQ_SEND;
1308	}	1208	}
1309		1209
		1210	UV
		1211	major (UV dev)
		1212	ALIAS:
		1213	minor = 1
		1214	CODE:
		1215	RETVAL = ix ? major (dev) : minor (dev);
		1216	OUTPUT:
		1217	RETVAL
		1218
		1219	UV
		1220	makedev (UV maj, UV min)
		1221	CODE:
		1222	RETVAL = makedev (maj, min);
		1223	OUTPUT:
		1224	RETVAL
		1225
1310	void	1226	void
		1227	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1228	PPCODE:
		1229	{
		1230	dREQ;
		1231
		1232	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1233	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1234	req->sv1 = newSVsv (fh_or_path);
		1235
		1236	if (SvPOK (req->sv1))
		1237	{
		1238	req->type = EIO_UTIME;
		1239	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1240	}
		1241	else
		1242	{
		1243	req->type = EIO_FUTIME;
		1244	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1245	}
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1252	PPCODE:
		1253	{
		1254	dREQ;
		1255
		1256	req->sv1 = newSVsv (fh_or_path);
		1257	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1258
		1259	if (SvPOK (req->sv1))
		1260	{
		1261	req->type = EIO_TRUNCATE;
		1262	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1263	}
		1264	else
		1265	{
		1266	req->type = EIO_FTRUNCATE;
		1267	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1268	}
		1269
		1270	REQ_SEND;
		1271	}
		1272
		1273	void
		1274	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1275	ALIAS:
		1276	aio_chmod = EIO_CHMOD
		1277	aio_mkdir = EIO_MKDIR
		1278	PPCODE:
		1279	{
		1280	dREQ;
		1281
		1282	req->int2 = mode;
		1283	req->sv1 = newSVsv (fh_or_path);
		1284
		1285	if (SvPOK (req->sv1))
		1286	{
		1287	req->type = ix;
		1288	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1289	}
		1290	else
		1291	{
		1292	req->type = EIO_FCHMOD;
		1293	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1294	}
		1295
		1296	REQ_SEND;
		1297	}
		1298
		1299	void
		1300	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1301	PPCODE:
		1302	{
		1303	dREQ;
		1304
		1305	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1306	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1307	req->sv1 = newSVsv (fh_or_path);
		1308
		1309	if (SvPOK (req->sv1))
		1310	{
		1311	req->type = EIO_CHOWN;
		1312	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1313	}
		1314	else
		1315	{
		1316	req->type = EIO_FCHOWN;
		1317	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1318	}
		1319
		1320	REQ_SEND;
		1321	}
		1322
		1323	void
		1324	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1325	PPCODE:
		1326	{
		1327	dREQ;
		1328
		1329	req->type = EIO_READDIR;
		1330	req->sv1 = newSVsv (pathname);
		1331	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1332	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1333
		1334	if (flags & EIO_READDIR_DENTS)
		1335	req->int1 |= EIO_READDIR_CUSTOM2;
		1336
		1337	REQ_SEND;
		1338	}
		1339
		1340	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1341	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1342	ALIAS:
1315	aio_unlink = REQ_UNLINK	1343	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1344	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1345	aio_readdir = EIO_READDIR
1318	PPCODE:	1346	PPCODE:
1319	{	1347	{
1320	dREQ;	1348	dREQ;
1321		1349
1322	req->type = ix;	1350	req->type = ix;
1323	req->data = newSVsv (pathname);	1351	req->sv1 = newSVsv (pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1352	req->ptr1 = SvPVbyte_nolen (req->sv1);
1325		1353
1326	REQ_SEND;	1354	REQ_SEND;
1327	}	1355	}
1328		1356
1329	void	1357	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1358	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:	1359	ALIAS:
1335	aio_link = REQ_LINK	1360	aio_link = EIO_LINK
1336	aio_symlink = REQ_SYMLINK	1361	aio_symlink = EIO_SYMLINK
1337	aio_rename = REQ_RENAME	1362	aio_rename = EIO_RENAME
1338	PPCODE:	1363	PPCODE:
1339	{	1364	{
1340	dREQ;	1365	dREQ;
1341		1366
1342	req->type = ix;	1367	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1368	req->sv1 = newSVsv (oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1369	req->ptr1 = SvPVbyte_nolen (req->sv1);
1345	req->data = newSVsv (newpath);	1370	req->sv2 = newSVsv (newpath);
1346	req->dataptr = SvPVbyte_nolen (req->data);	1371	req->ptr2 = SvPVbyte_nolen (req->sv2);
1347		1372
1348	REQ_SEND;	1373	REQ_SEND;
1349	}	1374	}
1350		1375
1351	void	1376	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1377	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1378	PPCODE:
1356	{	1379	{
1357	dREQ;	1380	dREQ;
1358		1381
1359	req->type = REQ_BUSY;	1382	req->type = EIO_MKNOD;
1360	req->fd = delay < 0. ? 0 : delay;	1383	req->sv1 = newSVsv (pathname);
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1384	req->ptr1 = SvPVbyte_nolen (req->sv1);
1362		1385	req->int2 = (mode_t)mode;
		1386	req->offs = dev;
		1387
1363	REQ_SEND;	1388	REQ_SEND;
1364	}	1389	}
1365		1390
1366	void	1391	void
1367	aio_group (callback=&PL_sv_undef)	1392	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1368	SV * callback	1393	ALIAS:
1369	PROTOTYPE: ;$	1394	aio_mtouch = EIO_MTOUCH
		1395	aio_msync = EIO_MSYNC
1370	PPCODE:	1396	PPCODE:
1371	{	1397	{
		1398	STRLEN svlen;
		1399	char *svptr = SvPVbyte (data, svlen);
		1400	UV len = SvUV (length);
		1401
		1402	if (offset < 0)
		1403	offset += svlen;
		1404
		1405	if (offset < 0 || offset > svlen)
		1406	croak ("offset outside of scalar");
		1407
		1408	if (!SvOK (length) || len + offset > svlen)
		1409	len = svlen - offset;
		1410
		1411	{
		1412	dREQ;
		1413
		1414	req->type = ix;
		1415	req->sv2 = SvREFCNT_inc (data);
		1416	req->ptr2 = (char *)svptr + offset;
		1417	req->size = len;
		1418	req->int1 = flags;
		1419
		1420	REQ_SEND;
		1421	}
		1422	}
		1423
		1424	void
		1425	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1426	PPCODE:
		1427	{
		1428	STRLEN svlen;
		1429	char *svptr = SvPVbyte (data, svlen);
		1430	UV len = SvUV (length);
		1431
		1432	if (offset < 0)
		1433	offset += svlen;
		1434
		1435	if (offset < 0 || offset > svlen)
		1436	croak ("offset outside of scalar");
		1437
		1438	if (!SvOK (length) || len + offset > svlen)
		1439	len = svlen - offset;
		1440
		1441	{
		1442	dREQ;
		1443
		1444	req->type = EIO_MLOCK;
		1445	req->sv2 = SvREFCNT_inc (data);
		1446	req->ptr2 = (char *)svptr + offset;
		1447	req->size = len;
		1448
		1449	REQ_SEND;
		1450	}
		1451	}
		1452
		1453	void
		1454	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1455	PPCODE:
		1456	{
		1457	dREQ;
		1458
		1459	req->type = EIO_MLOCKALL;
		1460	req->int1 = flags;
		1461
		1462	REQ_SEND;
		1463	}
		1464
		1465	void
		1466	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1467	PPCODE:
		1468	{
1372	dREQ;	1469	dREQ;
1373		1470
		1471	req->type = EIO_BUSY;
		1472	req->nv1 = delay < 0. ? 0. : delay;
		1473
		1474	REQ_SEND;
		1475	}
		1476
		1477	void
		1478	aio_group (SV *callback=&PL_sv_undef)
		1479	PPCODE:
		1480	{
		1481	dREQ;
		1482
1374	req->type = REQ_GROUP;	1483	req->type = EIO_GROUP;
		1484
1375	req_send (req);	1485	req_submit (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1486	XPUSHs (req_sv (req, aio_grp_stash));
1378	}	1487	}
1379		1488
1380	void	1489	void
1381	aio_nop (callback=&PL_sv_undef)	1490	aio_nop (SV *callback=&PL_sv_undef)
1382	SV * callback	1491	ALIAS:
		1492	aio_nop = EIO_NOP
		1493	aio_sync = EIO_SYNC
1383	PPCODE:	1494	PPCODE:
1384	{	1495	{
1385	dREQ;	1496	dREQ;
1386		1497
1387	req->type = REQ_NOP;	1498	req->type = ix;
1388		1499
1389	REQ_SEND;	1500	REQ_SEND;
1390	}	1501	}
1391		1502
1392	void	1503	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1504	aioreq_pri (int pri = 0)
1394	CODE:	1505	CODE:
		1506	RETVAL = next_pri;
		1507	if (items > 0)
		1508	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1509	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1510	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1511	next_pri = pri;
		1512	}
		1513	OUTPUT:
		1514	RETVAL
1398		1515
1399	void	1516	void
1400	aioreq_nice (int nice = 0)	1517	aioreq_nice (int nice = 0)
1401	CODE:	1518	CODE:
1402	nice = next_pri - nice;	1519	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1520	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1521	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1522	next_pri = nice;
1406		1523
1407	void	1524	void
1408	flush ()	1525	flush ()
1409	PROTOTYPE:
1410	CODE:	1526	CODE:
1411	while (nreqs)	1527	while (eio_nreqs ())
1412	{	1528	{
1413	poll_wait ();	1529	poll_wait ();
1414	poll_cb ();	1530	poll_cb ();
1415	}	1531	}
1416		1532
1417	void
1418	poll()
1419	PROTOTYPE:
1420	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();
1424	poll_cb ();
1425	}
1426
1427	int	1533	int
1428	poll_fileno()	1534	poll ()
1429	PROTOTYPE:
1430	CODE:	1535	CODE:
1431	RETVAL = respipe [0];	1536	poll_wait ();
1432	OUTPUT:
1433	RETVAL
1434
1435	int
1436	poll_cb(...)
1437	PROTOTYPE:
1438	CODE:
1439	RETVAL = poll_cb ();	1537	RETVAL = poll_cb ();
1440	OUTPUT:	1538	OUTPUT:
1441	RETVAL	1539	RETVAL
1442		1540
1443	void
1444	poll_wait()
1445	PROTOTYPE:
1446	CODE:
1447	if (nreqs)
1448	poll_wait ();
1449
1450	int	1541	int
1451	nreqs()	1542	poll_fileno ()
1452	PROTOTYPE:
1453	CODE:	1543	CODE:
1454	RETVAL = nreqs;	1544	RETVAL = s_epipe_fd (&respipe);
1455	OUTPUT:	1545	OUTPUT:
1456	RETVAL	1546	RETVAL
1457		1547
		1548	int
		1549	poll_cb (...)
		1550	PROTOTYPE:
		1551	CODE:
		1552	RETVAL = poll_cb ();
		1553	OUTPUT:
		1554	RETVAL
		1555
		1556	void
		1557	poll_wait ()
		1558	CODE:
		1559	poll_wait ();
		1560
		1561	int
		1562	nreqs ()
		1563	CODE:
		1564	RETVAL = eio_nreqs ();
		1565	OUTPUT:
		1566	RETVAL
		1567
		1568	int
		1569	nready ()
		1570	CODE:
		1571	RETVAL = eio_nready ();
		1572	OUTPUT:
		1573	RETVAL
		1574
		1575	int
		1576	npending ()
		1577	CODE:
		1578	RETVAL = eio_npending ();
		1579	OUTPUT:
		1580	RETVAL
		1581
		1582	int
		1583	nthreads ()
		1584	CODE:
		1585	RETVAL = eio_nthreads ();
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	int
		1590	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1591	CODE:
		1592	RETVAL = posix_fadvise (fh, offset, length, advice);
		1593	OUTPUT:
		1594	RETVAL
		1595
		1596	IV
		1597	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1598	CODE:
		1599	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	void
		1604	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1605	PPCODE:
		1606	sv_unmagic (scalar, MMAP_MAGIC);
		1607	{
		1608	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1609	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1610	if (addr == (void *)-1)
		1611	XSRETURN_NO;
		1612
		1613	sv_force_normal (scalar);
		1614
		1615	/* we store the length in mg_obj, as namlen is I32 :/ */
		1616	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1617	->mg_obj = (SV *)length;
		1618
		1619	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1620
		1621	if (!(prot & PROT_WRITE))
		1622	SvREADONLY_on (scalar);
		1623
		1624	if (SvLEN (scalar))
		1625	Safefree (SvPVX (scalar));
		1626
		1627	SvPVX (scalar) = (char *)addr;
		1628	SvCUR_set (scalar, length);
		1629	SvLEN_set (scalar, 0);
		1630	SvPOK_only (scalar);
		1631
		1632	XSRETURN_YES;
		1633	}
		1634
		1635	void
		1636	munmap (SV *scalar)
		1637	CODE:
		1638	sv_unmagic (scalar, MMAP_MAGIC);
		1639
		1640	int
		1641	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1642	ALIAS:
		1643	mprotect = 1
		1644	CODE:
		1645	{
		1646	STRLEN svlen;
		1647	void *addr = SvPVbyte (scalar, svlen);
		1648	size_t len = SvUV (length);
		1649
		1650	if (offset < 0)
		1651	offset += svlen;
		1652
		1653	if (offset < 0 || offset > svlen)
		1654	croak ("offset outside of scalar");
		1655
		1656	if (!SvOK (length) || len + offset > svlen)
		1657	len = svlen - offset;
		1658
		1659	addr = (void *)(((intptr_t)addr) + offset);
		1660	eio_page_align (&addr, &len);
		1661
		1662	switch (ix)
		1663	{
		1664	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1665	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1666	}
		1667	}
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	int
		1672	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1673	CODE:
		1674	{
		1675	STRLEN svlen;
		1676	void *addr = SvPVbyte (scalar, svlen);
		1677	size_t len = SvUV (length);
		1678
		1679	if (offset < 0)
		1680	offset += svlen;
		1681
		1682	if (offset < 0 || offset > svlen)
		1683	croak ("offset outside of scalar");
		1684
		1685	if (!SvOK (length) || len + offset > svlen)
		1686	len = svlen - offset;
		1687
		1688	addr = (void *)(((intptr_t)addr) + offset);
		1689	eio_page_align (&addr, &len);
		1690	#if _POSIX_MEMLOCK_RANGE
		1691	RETVAL = munlock (addr, len);
		1692	#else
		1693	RETVAL = ((errno = ENOSYS), -1);
		1694	#endif
		1695	}
		1696	OUTPUT:
		1697	RETVAL
		1698
		1699	int
		1700	munlockall ()
		1701	CODE:
		1702	#if _POSIX_MEMLOCK
		1703	munlockall ();
		1704	#else
		1705	RETVAL = -1;
		1706	errno = ENOSYS;
		1707	#endif
		1708	OUTPUT:
		1709	RETVAL
		1710
		1711	void _on_next_submit (SV *cb)
		1712	CODE:
		1713	SvREFCNT_dec (on_next_submit);
		1714	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1715
1458	PROTOTYPES: DISABLE	1716	PROTOTYPES: DISABLE
1459		1717
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1719
1462	void	1720	void
1463	cancel (aio_req_ornot req)	1721	cancel (aio_req_ornot req)
1464	CODE:	1722	CODE:
1465	req_cancel (req);	1723	eio_cancel (req);
1466		1724
1467	void	1725	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1469	CODE:	1727	PPCODE:
		1728	{
		1729	if (GIMME_V != G_VOID)
		1730	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1731
		1732	if (items > 1)
		1733	{
		1734	SV *cb_cv =get_cb (callback);
		1735
1470	SvREFCNT_dec (req->callback);	1736	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1737	req->callback = SvREFCNT_inc (cb_cv);
		1738	}
		1739	}
1472		1740
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1741	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1742
1475	void	1743	void
1476	add (aio_req grp, ...)	1744	add (aio_req grp, ...)
1477	PPCODE:	1745	PPCODE:
1478	{	1746	{
1479	int i;	1747	int i;
1480	aio_req req;
1481		1748
1482	if (grp->fd == 2)	1749	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1750	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1751
1485	for (i = 1; i < items; ++i )	1752	for (i = 1; i < items; ++i )
1486	{	1753	{
		1754	aio_req req;
		1755
1487	if (GIMME_V != G_VOID)	1756	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1757	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1758
1490	req = SvAIO_REQ (ST (i));	1759	req = SvAIO_REQ (ST (i));
1491		1760
1492	if (req)	1761	if (req)
1493	{	1762	eio_grp_add (grp, req);
1494	++grp->length;
1495	req->grp = grp;
1496
1497	req->grp_prev = 0;
1498	req->grp_next = grp->grp_first;
1499
1500	if (grp->grp_first)
1501	grp->grp_first->grp_prev = req;
1502
1503	grp->grp_first = req;
1504	}
1505	}	1763	}
1506	}	1764	}
1507		1765
1508	void	1766	void
1509	cancel_subs (aio_req_ornot req)	1767	cancel_subs (aio_req_ornot req)
…		…
1513	void	1771	void
1514	result (aio_req grp, ...)	1772	result (aio_req grp, ...)
1515	CODE:	1773	CODE:
1516	{	1774	{
1517	int i;	1775	int i;
		1776	AV *av;
		1777
		1778	grp->errorno = errno;
		1779
1518	AV *av = newAV ();	1780	av = newAV ();
		1781	av_extend (av, items - 1);
1519		1782
1520	for (i = 1; i < items; ++i )	1783	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1784	av_push (av, newSVsv (ST (i)));
1522		1785
1523	SvREFCNT_dec (grp->data);	1786	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1787	grp->sv1 = (SV *)av;
1525	}	1788	}
		1789
		1790	void
		1791	errno (aio_req grp, int errorno = errno)
		1792	CODE:
		1793	grp->errorno = errorno;
1526		1794
1527	void	1795	void
1528	limit (aio_req grp, int limit)	1796	limit (aio_req grp, int limit)
1529	CODE:	1797	CODE:
1530	grp->fd2 = limit;	1798	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		1799
1533	void	1800	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1801	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1802	CODE:
1536	{	1803	{
1537	SvREFCNT_dec (grp->fh2);	1804	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1805	grp->sv2 = newSVsv (callback);
		1806	grp->feed = aio_grp_feed;
1539		1807
1540	if (grp->fd2 <= 0)	1808	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1809	grp->int2 = 2;
1542		1810
1543	aio_grp_feed (grp);	1811	eio_grp_limit (grp, grp->int2);
1544	}	1812	}
1545		1813

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