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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 1.195 by root, Mon Sep 26 20:19:08 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, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
42	# else	295	# else
43	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	297	# endif
45	#endif	298	#endif
46		299	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	301	#endif
51		302	#ifndef MAP_LOCKED
52	#if __ia64	303	# 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	304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
59		314
60	/* buffer size for various temporary buffers */	315	#ifndef makedev
61	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
62		324
63	#define dBUF \	325	#ifndef PAGESIZE
64	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
65	LOCK (wrklock); \	327	#endif
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		328
71	enum {	329	enum {
72	REQ_QUIT,	330	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	};	331	};
84		332
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;	333	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd *aio_wd;
119		336
120	enum {	337	static SV *on_next_submit;
121	PRI_MIN = -4,	338	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;	339	static int max_outstanding;
134	static int respipe [2];
135		340
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	341	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		342
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);	343	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
246		345
		346	static void want_poll (void)
		347	{
		348	/* write a dummy byte to the pipe so fh becomes ready */
		349	s_epipe_signal (&respipe);
		350	}
		351
		352	static void done_poll (void)
		353	{
		354	/* read any signals sent by the worker threads */
		355	s_epipe_drain (&respipe);
		356	}
		357
247	/* must be called at most once */	358	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
249	{	360	{
250	if (!req->self)	361	if (!req->self)
251	{	362	{
252	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	365	}
255		366
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	368	}
258		369
259	static aio_req SvAIO_REQ (SV *sv)	370	static aio_req SvAIO_REQ (SV *sv)
260	{	371	{
261	MAGIC *mg;	372	MAGIC *mg;
262		373
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	374	if (!SvROK (sv)
		375	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		376	&& SvSTASH (SvRV (sv)) != aio_req_stash
		377	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	378	croak ("object of class IO::AIO::REQ expected");
265		379
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	380	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		381
268	return mg ? (aio_req)mg->mg_ptr : 0;	382	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	383	}
270		384
		385	static aio_wd SvAIO_WD (SV *sv)
		386	{
		387	if (!SvROK (sv)
		388	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		389	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		390	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		391
		392	return (aio_wd)(long)SvIVX (SvRV (sv));
		393	}
		394
271	static void aio_grp_feed (aio_req grp)	395	static void aio_grp_feed (aio_req grp)
272	{	396	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	397	if (grp->sv2 && SvOK (grp->sv2))
274	{	398	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	399	dSP;
280		400
281	ENTER;	401	ENTER;
282	SAVETMPS;	402	SAVETMPS;
283	PUSHMARK (SP);	403	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	404	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	405	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	406	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	407	SPAGAIN;
288	FREETMPS;	408	FREETMPS;
289	LEAVE;	409	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	}	410	}
300	}	411	}
301		412
302	static void aio_grp_dec (aio_req grp)	413	static void req_submit (eio_req *req)
303	{	414	{
304	--grp->length;	415	eio_submit (req);
305		416
306	/* call feeder, if applicable */	417	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	418	{
312	req_invoke (grp);	419	dSP;
313	req_free (grp);	420	SV *cb = sv_2mortal (on_next_submit);
		421
		422	on_next_submit = 0;
		423
		424	PUSHMARK (SP);
		425	PUTBACK;
		426	call_sv (cb, G_DISCARD | G_EVAL);
314	}	427	}
315	}	428	}
316		429
317	static void poll_wait ()	430	static int req_invoke (eio_req *req)
318	{	431	{
319	fd_set rfd;	432	if (req->flags & FLAG_SV2_RO_OFF)
		433	SvREADONLY_off (req->sv2);
320		434
321	while (nreqs)	435	if (!EIO_CANCELLED (req) && req->callback)
322	{	436	{
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;	437	dSP;
345		438	static SV *sv_result_cache; /* caches the result integer SV */
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	439	SV *sv_result;
347	{
348	errno = req->errorno;
349		440
350	ENTER;	441	ENTER;
351	SAVETMPS;	442	SAVETMPS;
352	PUSHMARK (SP);	443	PUSHMARK (SP);
353	EXTEND (SP, 1);	444	EXTEND (SP, 1);
354		445
		446	/* do not recreate the result IV from scratch each time */
		447	if (expect_true (sv_result_cache))
		448	{
		449	sv_result = sv_result_cache; sv_result_cache = 0;
		450	SvIV_set (sv_result, req->result);
		451	SvIOK_only (sv_result);
		452	}
		453	else
		454	{
		455	sv_result = newSViv (req->result);
		456	SvREADONLY_on (sv_result);
		457	}
		458
355	switch (req->type)	459	switch (req->type)
356	{	460	{
		461	case EIO_WD_OPEN:
		462	PUSHs (sv_2mortal (sv_bless (newRV_noinc (newSViv (((long)req->wd))), aio_wd_stash)));
		463	break;
		464
357	case REQ_READDIR:	465	case EIO_READDIR:
358	{	466	{
359	SV *rv = &PL_sv_undef;	467	SV *rv = &PL_sv_undef;
360		468
361	if (req->result >= 0)	469	if (req->result >= 0)
362	{	470	{
363	int i;	471	int i;
364	char *buf = req->data2ptr;	472	char *names = (char *)req->ptr2;
		473	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	474	AV *av = newAV ();
366		475
367	av_extend (av, req->result - 1);	476	av_extend (av, req->result - 1);
368		477
369	for (i = 0; i < req->result; ++i)	478	for (i = 0; i < req->result; ++i)
370	{	479	{
371	SV *sv = newSVpv (buf, 0);	480	if (req->int1 & EIO_READDIR_DENTS)
		481	{
		482	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		483
		484	if (req->int1 & EIO_READDIR_CUSTOM2)
		485	{
		486	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		487	AV *avent = newAV ();
		488
		489	av_extend (avent, 2);
		490
		491	if (!sv_type [ent->type])
		492	{
		493	sv_type [ent->type] = newSViv (ent->type);
		494	SvREADONLY_on (sv_type [ent->type]);
		495	}
		496
		497	av_store (avent, 0, namesv);
		498	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		499	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		500
		501	av_store (av, i, newRV_noinc ((SV *)avent));
		502	}
		503	else
373	av_store (av, i, sv);	504	av_store (av, i, namesv);
		505
		506	++ent;
		507	}
		508	else
		509	{
		510	SV *name = newSVpv (names, 0);
		511	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	512	names += SvCUR (name) + 1;
		513	}
375	}	514	}
376		515
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	516	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	517	}
379		518
380	PUSHs (rv);	519	PUSHs (rv);
		520
		521	if (req->int1 & EIO_READDIR_CUSTOM1)
		522	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	523	}
382	break;	524	break;
383		525
384	case REQ_OPEN:	526	case EIO_OPEN:
385	{	527	{
386	/* convert fd to fh */	528	/* convert fd to fh */
387	SV *fh;	529	SV *fh = &PL_sv_undef;
388		530
389	PUSHs (sv_2mortal (newSViv (req->result)));	531	if (req->result >= 0)
390	PUTBACK;	532	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	533	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	534	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		535	char sym [64];
		536	int symlen;
		537
		538	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		539	gv_init (gv, aio_stash, sym, symlen, 0);
393		540
394	fh = SvREFCNT_inc (POPs);	541	symlen = snprintf (
		542	sym,
		543	sizeof (sym),
		544	"%s&=%d",
		545	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		546	(int)req->result
		547	);
395		548
		549	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		550	fh = (SV *)gv;
		551	}
		552
396	PUSHMARK (SP);	553	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	554	}
399	break;	555	break;
400		556
		557	case EIO_STATVFS:
		558	case EIO_FSTATVFS:
		559	{
		560	SV *rv = &PL_sv_undef;
		561
		562	#ifndef _WIN32
		563	if (req->result >= 0)
		564	{
		565	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		566	HV *hv = newHV ();
		567
		568	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		569
		570	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		571	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		572	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		573	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		574	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		575	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		576	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		577	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		578	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		579	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		580	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		581	}
		582	#endif
		583
		584	PUSHs (rv);
		585	}
		586
		587	break;
		588
401	case REQ_GROUP:	589	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	590	req->int1 = 2; /* mark group as finished */
403		591
404	if (req->data)	592	if (req->sv1)
405	{	593	{
406	int i;	594	int i;
407	AV *av = (AV *)req->data;	595	AV *av = (AV *)req->sv1;
408		596
409	EXTEND (SP, AvFILL (av) + 1);	597	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	598	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	599	PUSHs (*av_fetch (av, i, 0));
412	}	600	}
413	break;	601	break;
414		602
415	case REQ_NOP:	603	case EIO_NOP:
416	case REQ_BUSY:	604	case EIO_BUSY:
417	break;	605	break;
418		606
		607	case EIO_READLINK:
		608	case EIO_REALPATH:
		609	if (req->result > 0)
		610	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		611	break;
		612
		613	case EIO_STAT:
		614	case EIO_LSTAT:
		615	case EIO_FSTAT:
		616	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		617	PL_laststatval = req->result;
		618	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		619	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		620	PUSHs (sv_result);
		621	break;
		622
		623	case EIO_READ:
		624	{
		625	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		626	*SvEND (req->sv2) = 0;
		627	SvPOK_only (req->sv2);
		628	SvSETMAGIC (req->sv2);
		629	PUSHs (sv_result);
		630	}
		631	break;
		632
		633	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		634	if (req->result > 0)
		635	SvIV_set (sv_result, 0);
		636	/* FALLTHROUGH */
		637
419	default:	638	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	639	PUSHs (sv_result);
421	break;	640	break;
422	}	641	}
423		642
		643	errno = req->errorno;
424		644
425	PUTBACK;	645	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	646	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	647	SPAGAIN;
		648
		649	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		650	SvREFCNT_dec (sv_result);
		651	else
		652	sv_result_cache = sv_result;
428		653
429	FREETMPS;	654	FREETMPS;
430	LEAVE;	655	LEAVE;
		656
		657	PUTBACK;
431	}	658	}
432		659
433	if (req->grp)	660	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	}	661	}
453		662
454	static void req_free (aio_req req)	663	static void req_destroy (aio_req req)
455	{	664	{
456	if (req->self)	665	if (req->self)
457	{	666	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	667	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	668	SvREFCNT_dec (req->self);
460	}	669	}
461		670
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	671	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	672	SvREFCNT_dec (req->sv2);
		673	SvREFCNT_dec (req->sv3);
		674	SvREFCNT_dec (req->sv4);
465	SvREFCNT_dec (req->callback);	675	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		676
471	Safefree (req);	677	Safefree (req);
472	}	678	}
473		679
474	static void req_cancel_subs (aio_req grp)	680	static void req_cancel_subs (aio_req grp)
475	{	681	{
476	aio_req sub;
477
478	if (grp->type != REQ_GROUP)	682	if (grp->type != EIO_GROUP)
479	return;	683	return;
480		684
481	SvREFCNT_dec (grp->fh2);	685	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	686	grp->sv2 = 0;
483		687
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	688	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	689	}
487		690
488	static void req_cancel (aio_req req)	691	static void create_respipe (void)
489	{	692	{
490	req->flags |= FLAG_CANCELLED;	693	if (s_epipe_renew (&respipe))
491		694	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	695	}
494		696
		697	static void poll_wait (void)
		698	{
		699	while (eio_nreqs ())
		700	{
		701	int size;
		702
		703	X_LOCK (reslock);
		704	size = res_queue.size;
		705	X_UNLOCK (reslock);
		706
		707	if (size)
		708	return;
		709
		710	etp_maybe_start_thread ();
		711
		712	s_epipe_wait (&respipe);
		713	}
		714	}
		715
495	static int poll_cb ()	716	static int poll_cb (void)
496	{	717	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	718	for (;;)
503	{	719	{
504	LOCK (reslock);	720	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		721
507	if (req)	722	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;	723	croak (0);
522		724
523	--nreqs;	725	if (!max_outstanding || max_outstanding > eio_nreqs ())
		726	return res;
524		727
525	if (req->type == REQ_QUIT)	728	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	}	729	}
554
555	return count;
556	}	730	}
557		731
558	static void *aio_proc(void *arg);	732	static void ecb_cold
559		733	reinit (void)
560	static void start_thread (void)
561	{	734	{
562	worker *wrk = calloc (1, sizeof (worker));	735	create_respipe ();
563		736
564	if (!wrk)	737	if (eio_init (want_poll, done_poll) < 0)
565	croak ("unable to allocate worker thread data");	738	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	}	739	}
667		740
668	/*****************************************************************************/	741	/*****************************************************************************/
669	/* work around various missing functions */
670		742
671	#if !HAVE_PREADWRITE	743	#if !_POSIX_MAPPED_FILES
672	# define pread aio_pread	744	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
673	# define pwrite aio_pwrite	745	# 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	746	#endif
813	#else
814	res = -1;
815	errno = ENOSYS;
816	#endif
817		747
818	if (res < 0	748	#if !_POSIX_MEMORY_PROTECTION
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	749	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
820	#if __solaris	750	# define PROT_NONE 0
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	751	# define PROT_WRITE 0
		752	# define MAP_PRIVATE 0
		753	# define MAP_SHARED 0
		754	# define MAP_FIXED 0
822	#endif	755	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828		756
829	res = 0;	757	#define MMAP_MAGIC PERL_MAGIC_ext
830		758
831	while (count)	759	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
832	{	760	{
833	ssize_t cnt;	761	int old_errno = errno;
834		762	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	763	errno = old_errno;
836		764
837	if (cnt <= 0)	765	mg->mg_obj = 0; /* just in case */
838	{
839	if (cnt && !res) res = -1;
840	break;
841	}
842		766
843	cnt = write (ofd, aio_buf, cnt);	767	SvREADONLY_off (sv);
844		768
845	if (cnt <= 0)	769	if (SvPVX (sv) != mg->mg_ptr)
846	{	770	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
847	if (cnt && !res) res = -1;
848	break;
849	}
850		771
851	offset += cnt;	772	SvCUR_set (sv, 0);
852	res += cnt;	773	SvPVX (sv) = 0;
853	count -= cnt;	774	SvOK_off (sv);
854	}
855	}
856		775
857	return res;	776	return 0;
858	}	777	}
859		778
860	/* read a full directory */	779	static MGVTBL mmap_vtbl = {
861	static void scandir_ (aio_req req, worker *self)	780	0, 0, 0, 0, mmap_free
862	{	781	};
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		782
922	/*****************************************************************************/	783	/*****************************************************************************/
923		784
924	static void *aio_proc (void *thr_arg)	785	static SV * get_cb (SV *cb_sv)
925	{	786	{
926	aio_req req;	787	SvGETMAGIC (cb_sv);
927	int type;	788	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	}	789	}
1074		790
1075	#define dREQ \	791	#define dREQ \
		792	SV *cb_cv; \
1076	aio_req req; \	793	aio_req req; \
1077	int req_pri = next_pri; \	794	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \	795	next_pri = EIO_PRI_DEFAULT; \
1079	\	796	\
1080	if (SvOK (callback) && !SvROK (callback)) \	797	cb_cv = get_cb (callback); \
1081	croak ("callback must be undef or of reference type"); \
1082	\	798	\
1083	Newz (0, req, 1, aio_cb); \	799	Newz (0, req, 1, eio_req); \
1084	if (!req) \	800	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \	801	croak ("out of memory during eio_req allocation"); \
1086	\	802	\
1087	req->callback = newSVsv (callback); \	803	req->callback = SvREFCNT_inc (cb_cv); \
1088	req->pri = req_pri	804	req->pri = req_pri
1089		805
1090	#define REQ_SEND \	806	#define REQ_SEND \
		807	PUTBACK; \
1091	req_send (req); \	808	req_submit (req); \
		809	SPAGAIN; \
1092	\	810	\
1093	if (GIMME_V != G_VOID) \	811	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));	812	XPUSHs (req_sv (req, aio_req_stash));
1095		813
		814	static void
		815	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		816	{
		817	if (SvROK (path))
		818	{
		819	AV *av = (AV *)SvRV (path);
		820	SV *wdob;
		821
		822	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		823	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		824
		825	path = AvARRAY (av)[1];
		826	wdob = AvARRAY (av)[0];
		827
		828	*wd = SvAIO_WD (wdob);
		829	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		830	}
		831
		832	*pathsv = newSVsv (path);
		833	*ptr = SvPVbyte_nolen (*pathsv);
		834	}
		835
		836	static void
		837	req_set_path1 (aio_req req, SV *path)
		838	{
		839	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		840	}
		841
		842	static void
		843	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		844	{
		845	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		846
		847	switch (SvTYPE (rv))
		848	{
		849	case SVt_PVIO:
		850	case SVt_PVLV:
		851	case SVt_PVGV:
		852	req->type = type_fh;
		853	req->sv1 = newSVsv (fh_or_path);
		854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		855	break;
		856
		857	default:
		858	req->type = type_path;
		859	req_set_path1 (req, fh_or_path);
		860	break;
		861	}
		862
		863	}
		864
1096	MODULE = IO::AIO PACKAGE = IO::AIO	865	MODULE = IO::AIO PACKAGE = IO::AIO
1097		866
1098	PROTOTYPES: ENABLE	867	PROTOTYPES: ENABLE
1099		868
1100	BOOT:	869	BOOT:
1101	{	870	{
		871	static const struct {
		872	const char *name;
		873	IV iv;
		874	} *civ, const_iv[] = {
		875	# define const_niv(name, value) { # name, (IV) value },
		876	# define const_iv(name) { # name, (IV) name },
		877	# define const_eio(name) { # name, (IV) EIO_ ## name },
		878	const_iv (EXDEV)
		879	const_iv (ENOSYS)
		880	const_iv (O_RDONLY)
		881	const_iv (O_WRONLY)
		882	const_iv (O_RDWR)
		883	const_iv (O_CREAT)
		884	const_iv (O_TRUNC)
		885	const_iv (O_EXCL)
		886	const_iv (O_APPEND)
		887
		888	const_iv (O_ASYNC)
		889	const_iv (O_DIRECT)
		890	const_iv (O_NOATIME)
		891
		892	const_iv (O_CLOEXEC)
		893	const_iv (O_NOCTTY)
		894	const_iv (O_NOFOLLOW)
		895	const_iv (O_NONBLOCK)
		896	const_iv (O_EXEC)
		897	const_iv (O_SEARCH)
		898	const_iv (O_DIRECTORY)
		899	const_iv (O_DSYNC)
		900	const_iv (O_RSYNC)
		901	const_iv (O_SYNC)
		902	const_iv (O_TTY_INIT)
		903
		904	const_iv (S_IFIFO)
		905	const_iv (S_IFCHR)
		906	const_iv (S_IFBLK)
		907	const_iv (S_IFLNK)
		908	const_iv (S_IFREG)
		909	const_iv (S_IFDIR)
		910	const_iv (S_IFWHT)
		911	const_iv (S_IFSOCK)
		912	const_iv (S_IFMT)
		913
		914	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		915	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		916	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		917	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		918	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		919	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		920
		921	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		922	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		923	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		924	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		925	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		926
		927	const_iv (ST_RDONLY)
		928	const_iv (ST_NOSUID)
		929	const_iv (ST_NODEV)
		930	const_iv (ST_NOEXEC)
		931	const_iv (ST_SYNCHRONOUS)
		932	const_iv (ST_MANDLOCK)
		933	const_iv (ST_WRITE)
		934	const_iv (ST_APPEND)
		935	const_iv (ST_IMMUTABLE)
		936	const_iv (ST_NOATIME)
		937	const_iv (ST_NODIRATIME)
		938	const_iv (ST_RELATIME)
		939
		940	const_iv (PROT_NONE)
		941	const_iv (PROT_EXEC)
		942	const_iv (PROT_READ)
		943	const_iv (PROT_WRITE)
		944
		945	/*const_iv (MAP_FIXED)*/
		946	const_iv (MAP_PRIVATE)
		947	const_iv (MAP_SHARED)
		948	const_iv (MAP_ANONYMOUS)
		949
		950	/* linuxish */
		951	const_iv (MAP_HUGETLB)
		952	const_iv (MAP_LOCKED)
		953	const_iv (MAP_NORESERVE)
		954	const_iv (MAP_POPULATE)
		955	const_iv (MAP_NONBLOCK)
		956
		957	const_eio (MCL_FUTURE)
		958	const_eio (MCL_CURRENT)
		959
		960	const_eio (MS_ASYNC)
		961	const_eio (MS_INVALIDATE)
		962	const_eio (MS_SYNC)
		963
		964	const_eio (MT_MODIFY)
		965
		966	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		967	const_eio (SYNC_FILE_RANGE_WRITE)
		968	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		969
		970	const_eio (FALLOC_FL_KEEP_SIZE)
		971
		972	const_eio (READDIR_DENTS)
		973	const_eio (READDIR_DIRS_FIRST)
		974	const_eio (READDIR_STAT_ORDER)
		975	const_eio (READDIR_FOUND_UNKNOWN)
		976
		977	const_eio (DT_UNKNOWN)
		978	const_eio (DT_FIFO)
		979	const_eio (DT_CHR)
		980	const_eio (DT_DIR)
		981	const_eio (DT_BLK)
		982	const_eio (DT_REG)
		983	const_eio (DT_LNK)
		984	const_eio (DT_SOCK)
		985	const_eio (DT_WHT)
		986	};
		987
1102	HV *stash = gv_stashpv ("IO::AIO", 1);	988	aio_stash = gv_stashpv ("IO::AIO" , 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	989	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	990	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	991	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1106		992
1107	create_pipe ();	993	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	994	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1109	}
1110		995
		996	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		997
		998	reinit ();
		999	}
		1000
1111	void	1001	void
1112	min_parallel (nthreads)	1002	reinit ()
1113	int nthreads	1003	PROTOTYPE:
		1004
		1005	void
		1006	max_poll_reqs (unsigned int nreqs)
1114	PROTOTYPE: $	1007	PROTOTYPE: $
		1008	CODE:
		1009	eio_set_max_poll_reqs (nreqs);
1115		1010
1116	void	1011	void
1117	max_parallel (nthreads)	1012	max_poll_time (double nseconds)
1118	int nthreads
1119	PROTOTYPE: $	1013	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:	1014	CODE:
1126	RETVAL = max_outstanding;	1015	eio_set_max_poll_time (nseconds);
		1016
		1017	void
		1018	min_parallel (unsigned int nthreads)
		1019	PROTOTYPE: $
		1020	CODE:
		1021	eio_set_min_parallel (nthreads);
		1022
		1023	void
		1024	max_parallel (unsigned int nthreads)
		1025	PROTOTYPE: $
		1026	CODE:
		1027	eio_set_max_parallel (nthreads);
		1028
		1029	void
		1030	max_idle (unsigned int nthreads)
		1031	PROTOTYPE: $
		1032	CODE:
		1033	eio_set_max_idle (nthreads);
		1034
		1035	void
		1036	idle_timeout (unsigned int seconds)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_idle_timeout (seconds);
		1040
		1041	void
		1042	max_outstanding (unsigned int maxreqs)
		1043	PROTOTYPE: $
		1044	CODE:
1127	max_outstanding = nreqs;	1045	max_outstanding = maxreqs;
1128		1046
1129	void	1047	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1048	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$
1136	PPCODE:	1049	PPCODE:
1137	{	1050	{
1138	dREQ;	1051	dREQ;
1139		1052
1140	req->type = REQ_OPEN;	1053	req->type = EIO_WD_OPEN;
1141	req->data = newSVsv (pathname);	1054	req_set_path1 (req, pathname);
1142	req->dataptr = SvPVbyte_nolen (req->data);
1143	req->fd = flags;
1144	req->mode = mode;
1145		1055
1146	REQ_SEND;	1056	REQ_SEND;
1147	}	1057	}
1148		1058
1149	void	1059	void
		1060	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1061	PPCODE:
		1062	{
		1063	dREQ;
		1064
		1065	req->type = EIO_OPEN;
		1066	req_set_path1 (req, pathname);
		1067	req->int1 = flags;
		1068	req->int2 = mode;
		1069
		1070	REQ_SEND;
		1071	}
		1072
		1073	void
1150	aio_close (fh,callback=&PL_sv_undef)	1074	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$
1154	ALIAS:	1075	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC	1076	aio_fsync = EIO_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC	1077	aio_fdatasync = EIO_FDATASYNC
		1078	aio_syncfs = EIO_SYNCFS
1158	PPCODE:	1079	PPCODE:
1159	{	1080	{
		1081	int fd = s_fileno_croak (fh, 0);
1160	dREQ;	1082	dREQ;
1161		1083
1162	req->type = ix;	1084	req->type = ix;
1163	req->fh = newSVsv (fh);	1085	req->sv1 = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1086	req->int1 = fd;
1165		1087
1166	REQ_SEND (req);	1088	REQ_SEND (req);
1167	}	1089	}
1168		1090
1169	void	1091	void
		1092	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1093	PPCODE:
		1094	{
		1095	int fd = s_fileno_croak (fh, 0);
		1096	dREQ;
		1097
		1098	req->type = EIO_SYNC_FILE_RANGE;
		1099	req->sv1 = newSVsv (fh);
		1100	req->int1 = fd;
		1101	req->offs = offset;
		1102	req->size = nbytes;
		1103	req->int2 = flags;
		1104
		1105	REQ_SEND (req);
		1106	}
		1107
		1108	void
		1109	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_FALLOCATE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->int2 = mode;
		1119	req->offs = offset;
		1120	req->size = len;
		1121
		1122	REQ_SEND (req);
		1123	}
		1124
		1125	void
		1126	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1130	int fd = s_fileno_croak (fh, 0);
		1131	dREQ;
		1132
		1133	if (expect_false (close_fd < 0))
		1134	{
		1135	int pipefd [2];
		1136
		1137	if (
		1138	#ifdef _WIN32
		1139	_pipe (pipefd, 1, _O_BINARY) < 0
		1140	#else
		1141	pipe (pipefd) < 0
		1142	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1143	#endif
		1144	|| close (pipefd [1]) < 0
		1145	)
		1146	abort (); /*D*/
		1147
		1148	close_fd = pipefd [0];
		1149	}
		1150
		1151	req->type = EIO_DUP2;
		1152	req->int1 = close_fd;
		1153	req->sv2 = newSVsv (fh);
		1154	req->int2 = fd;
		1155
		1156	REQ_SEND (req);
		1157	}
		1158
		1159	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1160	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:	1161	ALIAS:
1178	aio_read = REQ_READ	1162	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	1163	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$
1181	PPCODE:	1164	PPCODE:
1182	{	1165	{
1183	aio_req req;
1184	STRLEN svlen;	1166	STRLEN svlen;
		1167	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	1168	char *svptr = SvPVbyte (data, svlen);
1186		1169	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		1170
1190	if (dataoffset < 0)	1171	if (dataoffset < 0)
1191	dataoffset += svlen;	1172	dataoffset += svlen;
1192		1173
1193	if (dataoffset < 0 || dataoffset > svlen)	1174	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	1175	croak ("dataoffset outside of data scalar");
1195		1176
1196	if (ix == REQ_WRITE)	1177	if (ix == EIO_WRITE)
1197	{	1178	{
1198	/* write: check length and adjust. */	1179	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	1180	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	1181	len = svlen - dataoffset;
1201	}	1182	}
1202	else	1183	else
1203	{	1184	{
1204	/* read: grow scalar as necessary */	1185	/* read: check type and grow scalar as necessary */
		1186	SvUPGRADE (data, SVt_PV);
1205	svptr = SvGROW (data, length + dataoffset);	1187	svptr = SvGROW (data, len + dataoffset + 1);
1206	}	1188	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		1189
1211	{	1190	{
1212	dREQ;	1191	dREQ;
1213		1192
1214	req->type = ix;	1193	req->type = ix;
1215	req->fh = newSVsv (fh);	1194	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1195	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	1196	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	1197	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	1198	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	1199	req->ptr2 = (char *)svptr + dataoffset;
		1200	req->stroffset = dataoffset;
1222		1201
1223	if (!SvREADONLY (data))	1202	if (!SvREADONLY (data))
1224	{	1203	{
1225	SvREADONLY_on (data);	1204	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	1205	req->flags |= FLAG_SV2_RO_OFF;
1227	}	1206	}
1228		1207
1229	REQ_SEND;	1208	REQ_SEND;
1230	}	1209	}
1231	}	1210	}
1232		1211
1233	void	1212	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1213	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1235	SV * out_fh	1214	ALIAS:
1236	SV * in_fh	1215	aio_readlink = EIO_READLINK
1237	UV in_offset	1216	aio_realpath = EIO_REALPATH
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$
1241	PPCODE:	1217	PPCODE:
1242	{	1218	{
		1219	dREQ;
		1220
		1221	req->type = ix;
		1222	req_set_path1 (req, pathname);
		1223
		1224	REQ_SEND;
		1225	}
		1226
		1227	void
		1228	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1229	PPCODE:
		1230	{
		1231	int ifd = s_fileno_croak (in_fh , 0);
		1232	int ofd = s_fileno_croak (out_fh, 1);
1243	dREQ;	1233	dREQ;
1244		1234
1245	req->type = REQ_SENDFILE;	1235	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	1236	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1237	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	1238	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1239	req->int2 = ifd;
1250	req->offset = in_offset;	1240	req->offs = in_offset;
1251	req->length = length;	1241	req->size = length;
1252		1242
1253	REQ_SEND;	1243	REQ_SEND;
1254	}	1244	}
1255		1245
1256	void	1246	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1247	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$
1263	PPCODE:	1248	PPCODE:
1264	{	1249	{
		1250	int fd = s_fileno_croak (fh, 0);
1265	dREQ;	1251	dREQ;
1266		1252
1267	req->type = REQ_READAHEAD;	1253	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	1254	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1255	req->int1 = fd;
1270	req->offset = offset;	1256	req->offs = offset;
1271	req->length = length;	1257	req->size = length;
1272		1258
1273	REQ_SEND;	1259	REQ_SEND;
1274	}	1260	}
1275		1261
1276	void	1262	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	1263	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	1264	ALIAS:
1281	aio_stat = REQ_STAT	1265	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	1266	aio_lstat = EIO_LSTAT
		1267	aio_statvfs = EIO_STATVFS
1283	PPCODE:	1268	PPCODE:
1284	{	1269	{
1285	dREQ;	1270	dREQ;
1286		1271
1287	New (0, req->statdata, 1, Stat_t);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293
1294	if (SvPOK (fh_or_path))
1295	{
1296	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);
1299	}
1300	else
1301	{
1302	req->type = REQ_FSTAT;
1303	req->fh = newSVsv (fh_or_path);	1272	req->sv1 = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1273	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1305	}
1306
1307	REQ_SEND;	1274	REQ_SEND;
1308	}	1275	}
1309		1276
		1277	UV
		1278	major (UV dev)
		1279	ALIAS:
		1280	minor = 1
		1281	CODE:
		1282	RETVAL = ix ? major (dev) : minor (dev);
		1283	OUTPUT:
		1284	RETVAL
		1285
		1286	UV
		1287	makedev (UV maj, UV min)
		1288	CODE:
		1289	RETVAL = makedev (maj, min);
		1290	OUTPUT:
		1291	RETVAL
		1292
1310	void	1293	void
		1294	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1295	PPCODE:
		1296	{
		1297	dREQ;
		1298
		1299	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1300	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1301	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1302
		1303	REQ_SEND;
		1304	}
		1305
		1306	void
		1307	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	dREQ;
		1311
		1312	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1313	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
		1319	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1320	ALIAS:
		1321	aio_chmod = EIO_CHMOD
		1322	aio_mkdir = EIO_MKDIR
		1323	PPCODE:
		1324	{
		1325	dREQ;
		1326
		1327	req->int2 = mode;
		1328	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1329
		1330	REQ_SEND;
		1331	}
		1332
		1333	void
		1334	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1335	PPCODE:
		1336	{
		1337	dREQ;
		1338
		1339	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1340	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1341	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1342
		1343	REQ_SEND;
		1344	}
		1345
		1346	void
		1347	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1348	PPCODE:
		1349	{
		1350	dREQ;
		1351
		1352	req->type = EIO_READDIR;
		1353	req->sv1 = newSVsv (pathname);
		1354	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1355	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1356
		1357	if (flags & EIO_READDIR_DENTS)
		1358	req->int1 |= EIO_READDIR_CUSTOM2;
		1359
		1360	REQ_SEND;
		1361	}
		1362
		1363	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1364	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1365	ALIAS:
1315	aio_unlink = REQ_UNLINK	1366	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1367	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1368	aio_readdir = EIO_READDIR
1318	PPCODE:	1369	PPCODE:
1319	{	1370	{
1320	dREQ;	1371	dREQ;
1321		1372
1322	req->type = ix;	1373	req->type = ix;
1323	req->data = newSVsv (pathname);	1374	req_set_path1 (req, pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1375
		1376	REQ_SEND;
		1377	}
		1378
		1379	void
		1380	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1381	ALIAS:
		1382	aio_link = EIO_LINK
		1383	aio_symlink = EIO_SYMLINK
		1384	aio_rename = EIO_RENAME
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388	eio_wd wd2;
		1389
		1390	req->type = ix;
		1391	req_set_path1 (req, oldpath);
		1392	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1393	req->int3 = (long)wd2;
1325		1394
1326	REQ_SEND;	1395	REQ_SEND;
1327	}	1396	}
1328		1397
1329	void	1398	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1399	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:
1335	aio_link = REQ_LINK
1336	aio_symlink = REQ_SYMLINK
1337	aio_rename = REQ_RENAME
1338	PPCODE:	1400	PPCODE:
1339	{	1401	{
1340	dREQ;	1402	dREQ;
1341		1403
1342	req->type = ix;	1404	req->type = EIO_MKNOD;
1343	req->fh = newSVsv (oldpath);	1405	req->int2 = (mode_t)mode;
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1406	req->offs = dev;
1345	req->data = newSVsv (newpath);	1407	req_set_path1 (req, pathname);
1346	req->dataptr = SvPVbyte_nolen (req->data);
1347		1408
1348	REQ_SEND;	1409	REQ_SEND;
1349	}	1410	}
1350		1411
1351	void	1412	void
		1413	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1414	ALIAS:
		1415	aio_mtouch = EIO_MTOUCH
		1416	aio_msync = EIO_MSYNC
		1417	PPCODE:
		1418	{
		1419	STRLEN svlen;
		1420	char *svptr = SvPVbyte (data, svlen);
		1421	UV len = SvUV (length);
		1422
		1423	if (offset < 0)
		1424	offset += svlen;
		1425
		1426	if (offset < 0 || offset > svlen)
		1427	croak ("offset outside of scalar");
		1428
		1429	if (!SvOK (length) || len + offset > svlen)
		1430	len = svlen - offset;
		1431
		1432	{
		1433	dREQ;
		1434
		1435	req->type = ix;
		1436	req->sv2 = SvREFCNT_inc (data);
		1437	req->ptr2 = (char *)svptr + offset;
		1438	req->size = len;
		1439	req->int1 = flags;
		1440
		1441	REQ_SEND;
		1442	}
		1443	}
		1444
		1445	void
		1446	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1447	PPCODE:
		1448	{
		1449	STRLEN svlen;
		1450	char *svptr = SvPVbyte (data, svlen);
		1451	UV len = SvUV (length);
		1452
		1453	if (offset < 0)
		1454	offset += svlen;
		1455
		1456	if (offset < 0 || offset > svlen)
		1457	croak ("offset outside of scalar");
		1458
		1459	if (!SvOK (length) || len + offset > svlen)
		1460	len = svlen - offset;
		1461
		1462	{
		1463	dREQ;
		1464
		1465	req->type = EIO_MLOCK;
		1466	req->sv2 = SvREFCNT_inc (data);
		1467	req->ptr2 = (char *)svptr + offset;
		1468	req->size = len;
		1469
		1470	REQ_SEND;
		1471	}
		1472	}
		1473
		1474	void
		1475	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1476	PPCODE:
		1477	{
		1478	dREQ;
		1479
		1480	req->type = EIO_MLOCKALL;
		1481	req->int1 = flags;
		1482
		1483	REQ_SEND;
		1484	}
		1485
		1486	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1487	aio_busy (double delay, SV *callback=&PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1488	PPCODE:
1356	{	1489	{
1357	dREQ;	1490	dREQ;
1358		1491
1359	req->type = REQ_BUSY;	1492	req->type = EIO_BUSY;
1360	req->fd = delay < 0. ? 0 : delay;	1493	req->nv1 = delay < 0. ? 0. : delay;
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1362		1494
1363	REQ_SEND;	1495	REQ_SEND;
1364	}	1496	}
1365		1497
1366	void	1498	void
1367	aio_group (callback=&PL_sv_undef)	1499	aio_group (SV *callback=&PL_sv_undef)
1368	SV * callback
1369	PROTOTYPE: ;$
1370	PPCODE:	1500	PPCODE:
1371	{	1501	{
1372	dREQ;	1502	dREQ;
1373		1503
1374	req->type = REQ_GROUP;	1504	req->type = EIO_GROUP;
		1505
1375	req_send (req);	1506	req_submit (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1507	XPUSHs (req_sv (req, aio_grp_stash));
1378	}	1508	}
1379		1509
1380	void	1510	void
1381	aio_nop (callback=&PL_sv_undef)	1511	aio_nop (SV *callback=&PL_sv_undef)
1382	SV * callback	1512	ALIAS:
		1513	aio_nop = EIO_NOP
		1514	aio_sync = EIO_SYNC
1383	PPCODE:	1515	PPCODE:
1384	{	1516	{
1385	dREQ;	1517	dREQ;
1386		1518
1387	req->type = REQ_NOP;	1519	req->type = ix;
1388		1520
1389	REQ_SEND;	1521	REQ_SEND;
1390	}	1522	}
1391		1523
1392	void	1524	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1525	aioreq_pri (int pri = 0)
1394	CODE:	1526	CODE:
		1527	RETVAL = next_pri;
		1528	if (items > 0)
		1529	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1530	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1531	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1532	next_pri = pri;
		1533	}
		1534	OUTPUT:
		1535	RETVAL
1398		1536
1399	void	1537	void
1400	aioreq_nice (int nice = 0)	1538	aioreq_nice (int nice = 0)
1401	CODE:	1539	CODE:
1402	nice = next_pri - nice;	1540	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1541	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1542	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1543	next_pri = nice;
1406		1544
1407	void	1545	void
1408	flush ()	1546	flush ()
1409	PROTOTYPE:
1410	CODE:	1547	CODE:
1411	while (nreqs)	1548	while (eio_nreqs ())
1412	{	1549	{
1413	poll_wait ();	1550	poll_wait ();
1414	poll_cb ();	1551	poll_cb ();
1415	}	1552	}
1416		1553
1417	void
1418	poll()
1419	PROTOTYPE:
1420	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();
1424	poll_cb ();
1425	}
1426
1427	int	1554	int
1428	poll_fileno()	1555	poll ()
1429	PROTOTYPE:
1430	CODE:	1556	CODE:
1431	RETVAL = respipe [0];	1557	poll_wait ();
1432	OUTPUT:
1433	RETVAL
1434
1435	int
1436	poll_cb(...)
1437	PROTOTYPE:
1438	CODE:
1439	RETVAL = poll_cb ();	1558	RETVAL = poll_cb ();
1440	OUTPUT:	1559	OUTPUT:
1441	RETVAL	1560	RETVAL
1442		1561
1443	void
1444	poll_wait()
1445	PROTOTYPE:
1446	CODE:
1447	if (nreqs)
1448	poll_wait ();
1449
1450	int	1562	int
1451	nreqs()	1563	poll_fileno ()
1452	PROTOTYPE:
1453	CODE:	1564	CODE:
1454	RETVAL = nreqs;	1565	RETVAL = s_epipe_fd (&respipe);
1455	OUTPUT:	1566	OUTPUT:
1456	RETVAL	1567	RETVAL
1457		1568
		1569	int
		1570	poll_cb (...)
		1571	PROTOTYPE:
		1572	CODE:
		1573	RETVAL = poll_cb ();
		1574	OUTPUT:
		1575	RETVAL
		1576
		1577	void
		1578	poll_wait ()
		1579	CODE:
		1580	poll_wait ();
		1581
		1582	int
		1583	nreqs ()
		1584	CODE:
		1585	RETVAL = eio_nreqs ();
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	int
		1590	nready ()
		1591	CODE:
		1592	RETVAL = eio_nready ();
		1593	OUTPUT:
		1594	RETVAL
		1595
		1596	int
		1597	npending ()
		1598	CODE:
		1599	RETVAL = eio_npending ();
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	int
		1604	nthreads ()
		1605	CODE:
		1606	RETVAL = eio_nthreads ();
		1607	OUTPUT:
		1608	RETVAL
		1609
		1610	int
		1611	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1612	CODE:
		1613	RETVAL = posix_fadvise (fh, offset, length, advice);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	IV
		1618	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1619	CODE:
		1620	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1621	OUTPUT:
		1622	RETVAL
		1623
		1624	void
		1625	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1626	PPCODE:
		1627	sv_unmagic (scalar, MMAP_MAGIC);
		1628	{
		1629	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1630	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1631	if (addr == (void *)-1)
		1632	XSRETURN_NO;
		1633
		1634	sv_force_normal (scalar);
		1635
		1636	/* we store the length in mg_obj, as namlen is I32 :/ */
		1637	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1638	->mg_obj = (SV *)length;
		1639
		1640	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1641
		1642	if (!(prot & PROT_WRITE))
		1643	SvREADONLY_on (scalar);
		1644
		1645	if (SvLEN (scalar))
		1646	Safefree (SvPVX (scalar));
		1647
		1648	SvPVX (scalar) = (char *)addr;
		1649	SvCUR_set (scalar, length);
		1650	SvLEN_set (scalar, 0);
		1651	SvPOK_only (scalar);
		1652
		1653	XSRETURN_YES;
		1654	}
		1655
		1656	void
		1657	munmap (SV *scalar)
		1658	CODE:
		1659	sv_unmagic (scalar, MMAP_MAGIC);
		1660
		1661	int
		1662	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1663	ALIAS:
		1664	mprotect = 1
		1665	CODE:
		1666	{
		1667	STRLEN svlen;
		1668	void *addr = SvPVbyte (scalar, svlen);
		1669	size_t len = SvUV (length);
		1670
		1671	if (offset < 0)
		1672	offset += svlen;
		1673
		1674	if (offset < 0 || offset > svlen)
		1675	croak ("offset outside of scalar");
		1676
		1677	if (!SvOK (length) || len + offset > svlen)
		1678	len = svlen - offset;
		1679
		1680	addr = (void *)(((intptr_t)addr) + offset);
		1681	eio_page_align (&addr, &len);
		1682
		1683	switch (ix)
		1684	{
		1685	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1686	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1687	}
		1688	}
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
		1693	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1694	CODE:
		1695	{
		1696	STRLEN svlen;
		1697	void *addr = SvPVbyte (scalar, svlen);
		1698	size_t len = SvUV (length);
		1699
		1700	if (offset < 0)
		1701	offset += svlen;
		1702
		1703	if (offset < 0 || offset > svlen)
		1704	croak ("offset outside of scalar");
		1705
		1706	if (!SvOK (length) || len + offset > svlen)
		1707	len = svlen - offset;
		1708
		1709	addr = (void *)(((intptr_t)addr) + offset);
		1710	eio_page_align (&addr, &len);
		1711	#if _POSIX_MEMLOCK_RANGE
		1712	RETVAL = munlock (addr, len);
		1713	#else
		1714	RETVAL = ((errno = ENOSYS), -1);
		1715	#endif
		1716	}
		1717	OUTPUT:
		1718	RETVAL
		1719
		1720	int
		1721	munlockall ()
		1722	CODE:
		1723	#if _POSIX_MEMLOCK
		1724	munlockall ();
		1725	#else
		1726	RETVAL = -1;
		1727	errno = ENOSYS;
		1728	#endif
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	void _on_next_submit (SV *cb)
		1733	CODE:
		1734	SvREFCNT_dec (on_next_submit);
		1735	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1736
1458	PROTOTYPES: DISABLE	1737	PROTOTYPES: DISABLE
1459		1738
		1739	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1740
		1741	void
		1742	DESTROY (SV *self)
		1743	CODE:
		1744	{
		1745	aio_wd wd = SvAIO_WD (self);
		1746	#if HAVE_AT
		1747	SV *callback = &PL_sv_undef;
		1748	dREQ; /* clobbers next_pri :/ */
		1749	req->type = EIO_WD_CLOSE;
		1750	req->wd = wd;
		1751	REQ_SEND;
		1752	#else
		1753	eio_wd_close_sync (wd);
		1754	#endif
		1755	}
		1756
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1757	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1758
1462	void	1759	void
1463	cancel (aio_req_ornot req)	1760	cancel (aio_req_ornot req)
1464	CODE:	1761	CODE:
1465	req_cancel (req);	1762	eio_cancel (req);
1466		1763
1467	void	1764	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1765	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1469	CODE:	1766	PPCODE:
		1767	{
		1768	if (GIMME_V != G_VOID)
		1769	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1770
		1771	if (items > 1)
		1772	{
		1773	SV *cb_cv =get_cb (callback);
		1774
1470	SvREFCNT_dec (req->callback);	1775	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1776	req->callback = SvREFCNT_inc (cb_cv);
		1777	}
		1778	}
1472		1779
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1780	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1781
1475	void	1782	void
1476	add (aio_req grp, ...)	1783	add (aio_req grp, ...)
1477	PPCODE:	1784	PPCODE:
1478	{	1785	{
1479	int i;	1786	int i;
1480	aio_req req;
1481		1787
1482	if (grp->fd == 2)	1788	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1789	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1790
1485	for (i = 1; i < items; ++i )	1791	for (i = 1; i < items; ++i )
1486	{	1792	{
		1793	aio_req req;
		1794
1487	if (GIMME_V != G_VOID)	1795	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1796	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1797
1490	req = SvAIO_REQ (ST (i));	1798	req = SvAIO_REQ (ST (i));
1491		1799
1492	if (req)	1800	if (req)
1493	{	1801	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	}	1802	}
1506	}	1803	}
1507		1804
1508	void	1805	void
1509	cancel_subs (aio_req_ornot req)	1806	cancel_subs (aio_req_ornot req)
…		…
1513	void	1810	void
1514	result (aio_req grp, ...)	1811	result (aio_req grp, ...)
1515	CODE:	1812	CODE:
1516	{	1813	{
1517	int i;	1814	int i;
		1815	AV *av;
		1816
		1817	grp->errorno = errno;
		1818
1518	AV *av = newAV ();	1819	av = newAV ();
		1820	av_extend (av, items - 1);
1519		1821
1520	for (i = 1; i < items; ++i )	1822	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1823	av_push (av, newSVsv (ST (i)));
1522		1824
1523	SvREFCNT_dec (grp->data);	1825	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1826	grp->sv1 = (SV *)av;
1525	}	1827	}
		1828
		1829	void
		1830	errno (aio_req grp, int errorno = errno)
		1831	CODE:
		1832	grp->errorno = errorno;
1526		1833
1527	void	1834	void
1528	limit (aio_req grp, int limit)	1835	limit (aio_req grp, int limit)
1529	CODE:	1836	CODE:
1530	grp->fd2 = limit;	1837	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		1838
1533	void	1839	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1840	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1841	CODE:
1536	{	1842	{
1537	SvREFCNT_dec (grp->fh2);	1843	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1844	grp->sv2 = newSVsv (callback);
		1845	grp->feed = aio_grp_feed;
1539		1846
1540	if (grp->fd2 <= 0)	1847	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1848	grp->int2 = 2;
1542		1849
1543	aio_grp_feed (grp);	1850	eio_grp_limit (grp, grp->int2);
1544	}	1851	}
1545		1852

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