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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.196 by root, Tue Sep 27 00:41:51 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	#ifndef PTHREAD_STACK_MIN	303	# define MAP_LOCKED 0
53	/* care for broken platforms, e.g. windows */
54	# define PTHREAD_STACK_MIN 16384
55	#endif	304	#endif
56		305	#ifndef MAP_NORESERVE
57	#if __ia64	306	# define MAP_NORESERVE 0
58	# define STACKSIZE 65536
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
60	# define STACKSIZE PTHREAD_STACK_MIN
61	#else
62	# define STACKSIZE 16384
63	#endif	307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
64		314
65	/* buffer size for various temporary buffers */	315	#ifndef makedev
66	#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
67		324
68	#define dBUF \	325	#ifndef PAGESIZE
69	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
70	LOCK (wrklock); \	327	#endif
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
72	UNLOCK (wrklock); \
73	if (!aio_buf) \
74	return -1;
75		328
76	enum {	329	enum {
77	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};	331	};
89		332
90	#define AIO_REQ_KLASS "IO::AIO::REQ"
91	#define AIO_GRP_KLASS "IO::AIO::GRP"
92
93	typedef struct aio_cb
94	{
95	struct aio_cb *volatile next;
96
97	SV *data, *callback;
98	SV *fh, *fh2;
99	void *dataptr, *data2ptr;
100	Stat_t *statdata;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104
105	STRLEN dataoffset;
106	int type;
107	int fd, fd2;
108	int errorno;
109	mode_t mode; /* open */
110
111	unsigned char flags;
112	unsigned char pri;
113
114	SV *self; /* the perl counterpart of this request, if any */
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
116	} aio_cb;
117
118	enum {
119	FLAG_CANCELLED = 0x01,
120	};
121
122	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
123	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
124		336
125	enum {	337	static SV *on_next_submit;
126	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
127	PRI_MAX = 4,	339	static int max_outstanding;
128		340
129	DEFAULT_PRI = 0,	341	static s_epipe respipe;
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133		342
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135
136	static int started, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{
170	closedir (wrk->dirp);
171	wrk->dirp = 0;
172	}
173
174	if (wrk->dbuf)
175	{
176	free (wrk->dbuf);
177	wrk->dbuf = 0;
178	}
179	}
180
181	static void worker_free (worker *wrk)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;
228
229	--q->size;
230
231	for (pri = NUM_PRI; pri--; )
232	{
233	aio_req req = q->qs[pri];
234
235	if (req)
236	{
237	if (!(q->qs[pri] = req->next))
238	q->qe[pri] = 0;
239
240	return req;
241	}
242	}
243
244	abort ();
245	}
246
247	static int poll_cb ();
248	static void req_invoke (aio_req req);
249	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
251		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
252	/* must be called at most once */	358	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
254	{	360	{
255	if (!req->self)	361	if (!req->self)
256	{	362	{
257	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
259	}	365	}
260		366
261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		368	}
		369
		370	static SV *
		371	newSVaio_wd (aio_wd wd)
		372	{
		373	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
262	}	374	}
263		375
264	static aio_req SvAIO_REQ (SV *sv)	376	static aio_req SvAIO_REQ (SV *sv)
265	{	377	{
266	MAGIC *mg;	378	MAGIC *mg;
267		379
268	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	380	if (!SvROK (sv)
		381	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		382	&& SvSTASH (SvRV (sv)) != aio_req_stash
		383	&& !sv_derived_from (sv, "IO::AIO::REQ")))
269	croak ("object of class " AIO_REQ_KLASS " expected");	384	croak ("object of class IO::AIO::REQ expected");
270		385
271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	386	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
272		387
273	return mg ? (aio_req)mg->mg_ptr : 0;	388	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	389	}
275		390
		391	static aio_wd SvAIO_WD (SV *sv)
		392	{
		393	if (!SvROK (sv)
		394	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		395	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		396	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		397
		398	return (aio_wd)(long)SvIVX (SvRV (sv));
		399	}
		400
276	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
277	{	402	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	403	if (grp->sv2 && SvOK (grp->sv2))
279	{	404	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	405	dSP;
285		406
286	ENTER;	407	ENTER;
287	SAVETMPS;	408	SAVETMPS;
288	PUSHMARK (SP);	409	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	410	XPUSHs (req_sv (grp, aio_grp_stash));
290	PUTBACK;	411	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	412	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	413	SPAGAIN;
293	FREETMPS;	414	FREETMPS;
294	LEAVE;	415	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	416	}
305	}	417	}
306		418
307	static void aio_grp_dec (aio_req grp)	419	static void req_submit (eio_req *req)
308	{	420	{
309	--grp->length;	421	eio_submit (req);
310		422
311	/* call feeder, if applicable */	423	if (expect_false (on_next_submit))
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	424	{
317	req_invoke (grp);	425	dSP;
318	req_free (grp);	426	SV *cb = sv_2mortal (on_next_submit);
		427
		428	on_next_submit = 0;
		429
		430	PUSHMARK (SP);
		431	PUTBACK;
		432	call_sv (cb, G_DISCARD | G_EVAL);
319	}	433	}
320	}	434	}
321		435
322	static void poll_wait ()	436	static int req_invoke (eio_req *req)
323	{	437	{
324	fd_set rfd;	438	if (req->flags & FLAG_SV2_RO_OFF)
		439	SvREADONLY_off (req->sv2);
325		440
326	while (nreqs)	441	if (!EIO_CANCELLED (req) && req->callback)
327	{	442	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;	443	dSP;
350		444	static SV *sv_result_cache; /* caches the result integer SV */
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	445	SV *sv_result;
352	{
353	errno = req->errorno;
354		446
355	ENTER;	447	ENTER;
356	SAVETMPS;	448	SAVETMPS;
357	PUSHMARK (SP);	449	PUSHMARK (SP);
358	EXTEND (SP, 1);	450	EXTEND (SP, 1);
359		451
		452	/* do not recreate the result IV from scratch each time */
		453	if (expect_true (sv_result_cache))
		454	{
		455	sv_result = sv_result_cache; sv_result_cache = 0;
		456	SvIV_set (sv_result, req->result);
		457	SvIOK_only (sv_result);
		458	}
		459	else
		460	{
		461	sv_result = newSViv (req->result);
		462	SvREADONLY_on (sv_result);
		463	}
		464
360	switch (req->type)	465	switch (req->type)
361	{	466	{
		467	case EIO_WD_OPEN:
		468	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		469	break;
		470
362	case REQ_READDIR:	471	case EIO_READDIR:
363	{	472	{
364	SV *rv = &PL_sv_undef;	473	SV *rv = &PL_sv_undef;
365		474
366	if (req->result >= 0)	475	if (req->result >= 0)
367	{	476	{
368	int i;	477	int i;
369	char *buf = req->data2ptr;	478	char *names = (char *)req->ptr2;
		479	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
370	AV *av = newAV ();	480	AV *av = newAV ();
371		481
372	av_extend (av, req->result - 1);	482	av_extend (av, req->result - 1);
373		483
374	for (i = 0; i < req->result; ++i)	484	for (i = 0; i < req->result; ++i)
375	{	485	{
376	SV *sv = newSVpv (buf, 0);	486	if (req->int1 & EIO_READDIR_DENTS)
		487	{
		488	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
377		489
		490	if (req->int1 & EIO_READDIR_CUSTOM2)
		491	{
		492	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		493	AV *avent = newAV ();
		494
		495	av_extend (avent, 2);
		496
		497	if (!sv_type [ent->type])
		498	{
		499	sv_type [ent->type] = newSViv (ent->type);
		500	SvREADONLY_on (sv_type [ent->type]);
		501	}
		502
		503	av_store (avent, 0, namesv);
		504	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		505	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		506
		507	av_store (av, i, newRV_noinc ((SV *)avent));
		508	}
		509	else
378	av_store (av, i, sv);	510	av_store (av, i, namesv);
		511
		512	++ent;
		513	}
		514	else
		515	{
		516	SV *name = newSVpv (names, 0);
		517	av_store (av, i, name);
379	buf += SvCUR (sv) + 1;	518	names += SvCUR (name) + 1;
		519	}
380	}	520	}
381		521
382	rv = sv_2mortal (newRV_noinc ((SV *)av));	522	rv = sv_2mortal (newRV_noinc ((SV *)av));
383	}	523	}
384		524
385	PUSHs (rv);	525	PUSHs (rv);
		526
		527	if (req->int1 & EIO_READDIR_CUSTOM1)
		528	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
386	}	529	}
387	break;	530	break;
388		531
389	case REQ_OPEN:	532	case EIO_OPEN:
390	{	533	{
391	/* convert fd to fh */	534	/* convert fd to fh */
392	SV *fh;	535	SV *fh = &PL_sv_undef;
393		536
394	PUSHs (sv_2mortal (newSViv (req->result)));	537	if (req->result >= 0)
395	PUTBACK;	538	{
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	539	GV *gv = (GV *)sv_newmortal ();
397	SPAGAIN;	540	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		541	char sym [64];
		542	int symlen;
		543
		544	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		545	gv_init (gv, aio_stash, sym, symlen, 0);
398		546
399	fh = SvREFCNT_inc (POPs);	547	symlen = snprintf (
		548	sym,
		549	sizeof (sym),
		550	"%s&=%d",
		551	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		552	(int)req->result
		553	);
400		554
		555	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		556	fh = (SV *)gv;
		557	}
		558
401	PUSHMARK (SP);	559	PUSHs (fh);
402	XPUSHs (sv_2mortal (fh));
403	}	560	}
404	break;	561	break;
405		562
		563	case EIO_STATVFS:
		564	case EIO_FSTATVFS:
		565	{
		566	SV *rv = &PL_sv_undef;
		567
		568	#ifndef _WIN32
		569	if (req->result >= 0)
		570	{
		571	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		572	HV *hv = newHV ();
		573
		574	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		575
		576	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		577	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		578	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		579	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		580	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		581	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		582	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		583	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		584	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		585	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		586	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		587	}
		588	#endif
		589
		590	PUSHs (rv);
		591	}
		592
		593	break;
		594
406	case REQ_GROUP:	595	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	596	req->int1 = 2; /* mark group as finished */
408		597
409	if (req->data)	598	if (req->sv1)
410	{	599	{
411	int i;	600	int i;
412	AV *av = (AV *)req->data;	601	AV *av = (AV *)req->sv1;
413		602
414	EXTEND (SP, AvFILL (av) + 1);	603	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	604	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	605	PUSHs (*av_fetch (av, i, 0));
417	}	606	}
418	break;	607	break;
419		608
420	case REQ_NOP:	609	case EIO_NOP:
421	case REQ_BUSY:	610	case EIO_BUSY:
422	break;	611	break;
423		612
		613	case EIO_READLINK:
		614	case EIO_REALPATH:
		615	if (req->result > 0)
		616	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		617	break;
		618
		619	case EIO_STAT:
		620	case EIO_LSTAT:
		621	case EIO_FSTAT:
		622	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		623	PL_laststatval = req->result;
		624	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		625	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		626	PUSHs (sv_result);
		627	break;
		628
		629	case EIO_READ:
		630	{
		631	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		632	*SvEND (req->sv2) = 0;
		633	SvPOK_only (req->sv2);
		634	SvSETMAGIC (req->sv2);
		635	PUSHs (sv_result);
		636	}
		637	break;
		638
		639	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		640	if (req->result > 0)
		641	SvIV_set (sv_result, 0);
		642	/* FALLTHROUGH */
		643
424	default:	644	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	645	PUSHs (sv_result);
426	break;	646	break;
427	}	647	}
428		648
		649	errno = req->errorno;
429		650
430	PUTBACK;	651	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	652	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	SPAGAIN;	653	SPAGAIN;
		654
		655	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		656	SvREFCNT_dec (sv_result);
		657	else
		658	sv_result_cache = sv_result;
433		659
434	FREETMPS;	660	FREETMPS;
435	LEAVE;	661	LEAVE;
		662
		663	PUTBACK;
436	}	664	}
437		665
438	if (req->grp)	666	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	667	}
458		668
459	static void req_free (aio_req req)	669	static void req_destroy (aio_req req)
460	{	670	{
461	if (req->self)	671	if (req->self)
462	{	672	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	673	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	674	SvREFCNT_dec (req->self);
465	}	675	}
466		676
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	677	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	678	SvREFCNT_dec (req->sv2);
		679	SvREFCNT_dec (req->sv3);
		680	SvREFCNT_dec (req->sv4);
470	SvREFCNT_dec (req->callback);	681	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475		682
476	Safefree (req);	683	Safefree (req);
477	}	684	}
478		685
479	static void req_cancel_subs (aio_req grp)	686	static void req_cancel_subs (aio_req grp)
480	{	687	{
481	aio_req sub;
482
483	if (grp->type != REQ_GROUP)	688	if (grp->type != EIO_GROUP)
484	return;	689	return;
485		690
486	SvREFCNT_dec (grp->fh2);	691	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	692	grp->sv2 = 0;
488		693
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	694	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	695	}
492		696
493	static void req_cancel (aio_req req)	697	static void create_respipe (void)
494	{	698	{
495	req->flags |= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
496		700	croak ("IO::AIO: unable to initialize result pipe");
497	req_cancel_subs (req);
498	}	701	}
499		702
		703	static void poll_wait (void)
		704	{
		705	while (eio_nreqs ())
		706	{
		707	int size;
		708
		709	X_LOCK (reslock);
		710	size = res_queue.size;
		711	X_UNLOCK (reslock);
		712
		713	if (size)
		714	return;
		715
		716	etp_maybe_start_thread ();
		717
		718	s_epipe_wait (&respipe);
		719	}
		720	}
		721
500	static int poll_cb ()	722	static int poll_cb (void)
501	{	723	{
502	dSP;
503	int count = 0;
504	int do_croak = 0;
505	aio_req req;
506
507	for (;;)	724	for (;;)
508	{	725	{
509	LOCK (reslock);	726	int res = eio_poll ();
510	req = reqq_shift (&res_queue);
511		727
512	if (req)	728	if (res > 0)
		729	croak (0);
		730
		731	if (!max_outstanding || max_outstanding > eio_nreqs ())
		732	return res;
		733
		734	poll_wait ();
		735	}
		736	}
		737
		738	static void ecb_cold
		739	reinit (void)
		740	{
		741	create_respipe ();
		742
		743	if (eio_init (want_poll, done_poll) < 0)
		744	croak ("IO::AIO: unable to initialise eio library");
		745	}
		746
		747	/*****************************************************************************/
		748
		749	#if !_POSIX_MAPPED_FILES
		750	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		751	# define munmap(addr,length) (errno = ENOSYS, -1)
		752	#endif
		753
		754	#if !_POSIX_MEMORY_PROTECTION
		755	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		756	# define PROT_NONE 0
		757	# define PROT_WRITE 0
		758	# define MAP_PRIVATE 0
		759	# define MAP_SHARED 0
		760	# define MAP_FIXED 0
		761	#endif
		762
		763	#define MMAP_MAGIC PERL_MAGIC_ext
		764
		765	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
		766	{
		767	int old_errno = errno;
		768	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		769	errno = old_errno;
		770
		771	mg->mg_obj = 0; /* just in case */
		772
		773	SvREADONLY_off (sv);
		774
		775	if (SvPVX (sv) != mg->mg_ptr)
		776	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		777
		778	SvCUR_set (sv, 0);
		779	SvPVX (sv) = 0;
		780	SvOK_off (sv);
		781
		782	return 0;
		783	}
		784
		785	static MGVTBL mmap_vtbl = {
		786	0, 0, 0, 0, mmap_free
		787	};
		788
		789	/*****************************************************************************/
		790
		791	static SV * get_cb (SV *cb_sv)
		792	{
		793	SvGETMAGIC (cb_sv);
		794	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		795	}
		796
		797	#define dREQ \
		798	SV *cb_cv; \
		799	aio_req req; \
		800	int req_pri = next_pri; \
		801	next_pri = EIO_PRI_DEFAULT; \
		802	\
		803	cb_cv = get_cb (callback); \
		804	\
		805	Newz (0, req, 1, eio_req); \
		806	if (!req) \
		807	croak ("out of memory during eio_req allocation"); \
		808	\
		809	req->callback = SvREFCNT_inc (cb_cv); \
		810	req->pri = req_pri
		811
		812	#define REQ_SEND \
		813	PUTBACK; \
		814	req_submit (req); \
		815	SPAGAIN; \
		816	\
		817	if (GIMME_V != G_VOID) \
		818	XPUSHs (req_sv (req, aio_req_stash));
		819
		820	static void
		821	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		822	{
		823	if (SvROK (path))
		824	{
		825	AV *av = (AV *)SvRV (path);
		826	SV *wdob;
		827
		828	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		829	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		830
		831	path = AvARRAY (av)[1];
		832	wdob = AvARRAY (av)[0];
		833
		834	if (SvOK (wdob))
513	{	835	{
514	if (!res_queue.size)	836	*wd = SvAIO_WD (wdob);
515	{	837	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
516	/* read any signals sent by the worker threads */
517	char buf [32];
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}
521	}
522
523	UNLOCK (reslock);
524
525	if (!req)
526	break;
527
528	--nreqs;
529
530	if (req->type == REQ_QUIT)
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{
534	req->fd = 1; /* mark request as delayed */
535	continue;
536	}	838	}
537	else	839	else
538	{	840	*wd = EIO_INVALID_WD;
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	841	}
559		842
560	return count;	843	*pathsv = newSVsv (path);
		844	*ptr = SvPVbyte_nolen (*pathsv);
561	}	845	}
562		846
563	static void *aio_proc(void *arg);	847	static void
564		848	req_set_path1 (aio_req req, SV *path)
565	static void start_thread (void)
566	{	849	{
567	sigset_t fullsigset, oldsigset;	850	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
568	pthread_attr_t attr;	851	}
569		852
570	worker *wrk = calloc (1, sizeof (worker));	853	static void
		854	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		855	{
		856	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
571		857
572	if (!wrk)	858	switch (SvTYPE (rv))
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{	859	{
586	wrk->prev = &wrk_first;	860	case SVt_PVIO:
587	wrk->next = wrk_first.next;	861	case SVt_PVLV:
588	wrk_first.next->prev = wrk;	862	case SVt_PVGV:
589	wrk_first.next = wrk;	863	req->type = type_fh;
590	started++;	864	req->sv1 = newSVsv (fh_or_path);
		865	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		866	break;
		867
		868	default:
		869	req->type = type_path;
		870	req_set_path1 (req, fh_or_path);
		871	break;
591	}	872	}
592	else
593	free (wrk);
594		873
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}	874	}
598		875
599	static void req_send (aio_req req)	876	MODULE = IO::AIO PACKAGE = IO::AIO
600	{
601	while (started < wanted && nreqs >= started)
602	start_thread ();
603		877
604	++nreqs;	878	PROTOTYPES: ENABLE
605		879
606	LOCK (reqlock);	880	BOOT:
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611
612	static void end_thread (void)
613	{	881	{
614	aio_req req;	882	static const struct {
		883	const char *name;
		884	IV iv;
		885	} *civ, const_iv[] = {
		886	# define const_niv(name, value) { # name, (IV) value },
		887	# define const_iv(name) { # name, (IV) name },
		888	# define const_eio(name) { # name, (IV) EIO_ ## name },
		889	const_iv (EXDEV)
		890	const_iv (ENOSYS)
		891	const_iv (O_RDONLY)
		892	const_iv (O_WRONLY)
		893	const_iv (O_RDWR)
		894	const_iv (O_CREAT)
		895	const_iv (O_TRUNC)
		896	const_iv (O_EXCL)
		897	const_iv (O_APPEND)
615		898
616	Newz (0, req, 1, aio_cb);	899	const_iv (O_ASYNC)
		900	const_iv (O_DIRECT)
		901	const_iv (O_NOATIME)
617		902
618	req->type = REQ_QUIT;	903	const_iv (O_CLOEXEC)
619	req->pri = PRI_MAX + PRI_BIAS;	904	const_iv (O_NOCTTY)
		905	const_iv (O_NOFOLLOW)
		906	const_iv (O_NONBLOCK)
		907	const_iv (O_EXEC)
		908	const_iv (O_SEARCH)
		909	const_iv (O_DIRECTORY)
		910	const_iv (O_DSYNC)
		911	const_iv (O_RSYNC)
		912	const_iv (O_SYNC)
		913	const_iv (O_TTY_INIT)
620		914
621	req_send (req);	915	const_iv (S_IFIFO)
622	}	916	const_iv (S_IFCHR)
		917	const_iv (S_IFBLK)
		918	const_iv (S_IFLNK)
		919	const_iv (S_IFREG)
		920	const_iv (S_IFDIR)
		921	const_iv (S_IFWHT)
		922	const_iv (S_IFSOCK)
		923	const_iv (S_IFMT)
623		924
624	static void min_parallel (int nthreads)	925	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
625	{	926	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
626	if (wanted < nthreads)	927	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
627	wanted = nthreads;	928	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
628	}	929	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		930	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
629		931
630	static void max_parallel (int nthreads)	932	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
631	{	933	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
632	int cur = started;	934	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		935	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		936	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
633		937
634	if (wanted > nthreads)	938	const_iv (ST_RDONLY)
635	wanted = nthreads;	939	const_iv (ST_NOSUID)
		940	const_iv (ST_NODEV)
		941	const_iv (ST_NOEXEC)
		942	const_iv (ST_SYNCHRONOUS)
		943	const_iv (ST_MANDLOCK)
		944	const_iv (ST_WRITE)
		945	const_iv (ST_APPEND)
		946	const_iv (ST_IMMUTABLE)
		947	const_iv (ST_NOATIME)
		948	const_iv (ST_NODIRATIME)
		949	const_iv (ST_RELATIME)
636		950
637	while (cur > wanted)	951	const_iv (PROT_NONE)
638	{	952	const_iv (PROT_EXEC)
639	end_thread ();	953	const_iv (PROT_READ)
640	cur--;	954	const_iv (PROT_WRITE)
641	}
642		955
643	while (started > wanted)	956	/*const_iv (MAP_FIXED)*/
644	{	957	const_iv (MAP_PRIVATE)
645	poll_wait ();	958	const_iv (MAP_SHARED)
646	poll_cb ();	959	const_iv (MAP_ANONYMOUS)
647	}
648	}
649		960
650	static void create_pipe ()	961	/* linuxish */
651	{	962	const_iv (MAP_HUGETLB)
652	if (pipe (respipe))	963	const_iv (MAP_LOCKED)
653	croak ("unable to initialize result pipe");	964	const_iv (MAP_NORESERVE)
		965	const_iv (MAP_POPULATE)
		966	const_iv (MAP_NONBLOCK)
654		967
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	968	const_eio (MCL_FUTURE)
656	croak ("cannot set result pipe to nonblocking mode");	969	const_eio (MCL_CURRENT)
657		970
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	971	const_eio (MS_ASYNC)
659	croak ("cannot set result pipe to nonblocking mode");	972	const_eio (MS_INVALIDATE)
660	}	973	const_eio (MS_SYNC)
661		974
662	/*****************************************************************************/	975	const_eio (MT_MODIFY)
663	/* work around various missing functions */
664		976
665	#if !HAVE_PREADWRITE	977	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
666	# define pread aio_pread	978	const_eio (SYNC_FILE_RANGE_WRITE)
667	# define pwrite aio_pwrite	979	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
668		980
669	/*	981	const_eio (FALLOC_FL_KEEP_SIZE)
670	* make our pread/pwrite safe against themselves, but not against
671	* normal read/write by using a mutex. slows down execution a lot,
672	* but that's your problem, not mine.
673	*/
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675		982
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	983	const_eio (READDIR_DENTS)
677	{	984	const_eio (READDIR_DIRS_FIRST)
678	ssize_t res;	985	const_eio (READDIR_STAT_ORDER)
679	off_t ooffset;	986	const_eio (READDIR_FOUND_UNKNOWN)
680		987
681	LOCK (preadwritelock);	988	const_eio (DT_UNKNOWN)
682	ooffset = lseek (fd, 0, SEEK_CUR);	989	const_eio (DT_FIFO)
683	lseek (fd, offset, SEEK_SET);	990	const_eio (DT_CHR)
684	res = read (fd, buf, count);	991	const_eio (DT_DIR)
685	lseek (fd, ooffset, SEEK_SET);	992	const_eio (DT_BLK)
686	UNLOCK (preadwritelock);	993	const_eio (DT_REG)
687		994	const_eio (DT_LNK)
688	return res;	995	const_eio (DT_SOCK)
689	}	996	const_eio (DT_WHT)
690
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
692	{
693	ssize_t res;
694	off_t ooffset;
695
696	LOCK (preadwritelock);
697	ooffset = lseek (fd, 0, SEEK_CUR);
698	lseek (fd, offset, SEEK_SET);
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702
703	return res;
704	}
705	#endif
706
707	#if !HAVE_FDATASYNC
708	# define fdatasync fsync
709	#endif
710
711	#if !HAVE_READAHEAD
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
713
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
715	{
716	dBUF;
717
718	while (count > 0)
719	{
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;
769
770	#if HAVE_SENDFILE
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773
774	# elif __freebsd
775	/*
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782
783	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}	997	};
787		998
788	# elif __hpux	999	aio_stash = gv_stashpv ("IO::AIO" , 1);
789	res = sendfile (ofd, ifd, offset, count, 0, 0);	1000	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1001	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1002	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
790		1003
791	# elif __solaris	1004	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
792	{	1005	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
793	struct sendfilevec vec;
794	size_t sbytes;
795		1006
796	vec.sfv_fd = ifd;	1007	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800		1008
801	res = sendfilev (ofd, &vec, 1, &sbytes);	1009	reinit ();
		1010	}
802		1011
803	if (res < 0 && sbytes)	1012	void
		1013	reinit ()
		1014	PROTOTYPE:
		1015
		1016	void
		1017	max_poll_reqs (unsigned int nreqs)
		1018	PROTOTYPE: $
		1019	CODE:
		1020	eio_set_max_poll_reqs (nreqs);
		1021
		1022	void
		1023	max_poll_time (double nseconds)
		1024	PROTOTYPE: $
		1025	CODE:
		1026	eio_set_max_poll_time (nseconds);
		1027
		1028	void
		1029	min_parallel (unsigned int nthreads)
		1030	PROTOTYPE: $
		1031	CODE:
		1032	eio_set_min_parallel (nthreads);
		1033
		1034	void
		1035	max_parallel (unsigned int nthreads)
		1036	PROTOTYPE: $
		1037	CODE:
		1038	eio_set_max_parallel (nthreads);
		1039
		1040	void
		1041	max_idle (unsigned int nthreads)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_idle (nthreads);
		1045
		1046	void
		1047	idle_timeout (unsigned int seconds)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_idle_timeout (seconds);
		1051
		1052	void
		1053	max_outstanding (unsigned int maxreqs)
		1054	PROTOTYPE: $
		1055	CODE:
		1056	max_outstanding = maxreqs;
		1057
		1058	void
		1059	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1060	PPCODE:
		1061	{
		1062	dREQ;
		1063
		1064	req->type = EIO_WD_OPEN;
		1065	req_set_path1 (req, pathname);
		1066
		1067	REQ_SEND;
		1068	}
		1069
		1070	void
		1071	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1072	PPCODE:
		1073	{
		1074	dREQ;
		1075
		1076	req->type = EIO_OPEN;
		1077	req_set_path1 (req, pathname);
		1078	req->int1 = flags;
		1079	req->int2 = mode;
		1080
		1081	REQ_SEND;
		1082	}
		1083
		1084	void
		1085	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		1086	ALIAS:
		1087	aio_fsync = EIO_FSYNC
		1088	aio_fdatasync = EIO_FDATASYNC
		1089	aio_syncfs = EIO_SYNCFS
		1090	PPCODE:
		1091	{
		1092	int fd = s_fileno_croak (fh, 0);
		1093	dREQ;
		1094
		1095	req->type = ix;
		1096	req->sv1 = newSVsv (fh);
		1097	req->int1 = fd;
		1098
		1099	REQ_SEND (req);
		1100	}
		1101
		1102	void
		1103	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	int fd = s_fileno_croak (fh, 0);
		1107	dREQ;
		1108
		1109	req->type = EIO_SYNC_FILE_RANGE;
		1110	req->sv1 = newSVsv (fh);
		1111	req->int1 = fd;
		1112	req->offs = offset;
804	res = sbytes;	1113	req->size = nbytes;
805	}	1114	req->int2 = flags;
806		1115
807	# endif	1116	REQ_SEND (req);
		1117	}
		1118
		1119	void
		1120	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1121	PPCODE:
		1122	{
		1123	int fd = s_fileno_croak (fh, 0);
		1124	dREQ;
		1125
		1126	req->type = EIO_FALLOCATE;
		1127	req->sv1 = newSVsv (fh);
		1128	req->int1 = fd;
		1129	req->int2 = mode;
		1130	req->offs = offset;
		1131	req->size = len;
		1132
		1133	REQ_SEND (req);
		1134	}
		1135
		1136	void
		1137	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1138	PPCODE:
		1139	{
		1140	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1141	int fd = s_fileno_croak (fh, 0);
		1142	dREQ;
		1143
		1144	if (expect_false (close_fd < 0))
		1145	{
		1146	int pipefd [2];
		1147
		1148	if (
		1149	#ifdef _WIN32
		1150	_pipe (pipefd, 1, _O_BINARY) < 0
808	#else	1151	#else
809	res = -1;	1152	pipe (pipefd) < 0
810	errno = ENOSYS;	1153	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
811	#endif	1154	#endif
812		1155	|| close (pipefd [1]) < 0
813	if (res < 0
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
815	#if __solaris
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
817	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823
824	res = 0;
825
826	while (count)
827	{
828	ssize_t cnt;
829
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
831
832	if (cnt <= 0)
833	{	1156	)
834	if (cnt && !res) res = -1;	1157	abort (); /*D*/
835	break;
836	}
837		1158
838	cnt = write (ofd, aio_buf, cnt);	1159	close_fd = pipefd [0];
839
840	if (cnt <= 0)
841	{
842	if (cnt && !res) res = -1;
843	break;
844	}
845
846	offset += cnt;
847	res += cnt;
848	count -= cnt;
849	}
850	}
851
852	return res;
853	}
854
855	/* read a full directory */
856	static void scandir_ (aio_req req, worker *self)
857	{
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}	1160	}
909	}
910		1161
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916
917	/*****************************************************************************/
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}
1069
1070	#define dREQ \
1071	aio_req req; \
1072	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \
1074	\
1075	if (SvOK (callback) && !SvROK (callback)) \
1076	croak ("callback must be undef or of reference type"); \
1077	\
1078	Newz (0, req, 1, aio_cb); \
1079	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \
1081	\
1082	req->callback = newSVsv (callback); \
1083	req->pri = req_pri
1084
1085	#define REQ_SEND \
1086	req_send (req); \
1087	\
1088	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090
1091	MODULE = IO::AIO PACKAGE = IO::AIO
1092
1093	PROTOTYPES: ENABLE
1094
1095	BOOT:
1096	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101
1102	create_pipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105
1106	void
1107	min_parallel (nthreads)
1108	int nthreads
1109	PROTOTYPE: $
1110
1111	void
1112	max_parallel (nthreads)
1113	int nthreads
1114	PROTOTYPE: $
1115
1116	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$
1123	PPCODE:
1124	{
1125	dREQ;
1126
1127	req->type = REQ_OPEN;	1162	req->type = EIO_DUP2;
		1163	req->int1 = close_fd;
1128	req->data = newSVsv (pathname);	1164	req->sv2 = newSVsv (fh);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1165	req->int2 = fd;
1130	req->fd = flags;
1131	req->mode = mode;
1132		1166
1133	REQ_SEND;	1167	REQ_SEND (req);
1134	}	1168	}
1135		1169
1136	void	1170	void
1137	aio_close (fh,callback=&PL_sv_undef)	1171	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	1172	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:
1146	{
1147	dREQ;
1148
1149	req->type = ix;
1150	req->fh = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152
1153	REQ_SEND (req);
1154	}
1155
1156	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:
1165	aio_read = REQ_READ	1173	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	1174	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	1175	PPCODE:
1169	{	1176	{
1170	aio_req req;
1171	STRLEN svlen;	1177	STRLEN svlen;
		1178	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	1179	char *svptr = SvPVbyte (data, svlen);
1173		1180	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		1181
1177	if (dataoffset < 0)	1182	if (dataoffset < 0)
1178	dataoffset += svlen;	1183	dataoffset += svlen;
1179		1184
1180	if (dataoffset < 0 || dataoffset > svlen)	1185	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1186	croak ("dataoffset outside of data scalar");
1182		1187
1183	if (ix == REQ_WRITE)	1188	if (ix == EIO_WRITE)
1184	{	1189	{
1185	/* write: check length and adjust. */	1190	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1191	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1192	len = svlen - dataoffset;
1188	}	1193	}
1189	else	1194	else
1190	{	1195	{
1191	/* read: grow scalar as necessary */	1196	/* read: check type and grow scalar as necessary */
		1197	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	1198	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	1199	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		1200
1198	{	1201	{
1199	dREQ;	1202	dREQ;
1200		1203
1201	req->type = ix;	1204	req->type = ix;
1202	req->fh = newSVsv (fh);	1205	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1206	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	1207	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1208	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1209	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1210	req->ptr2 = (char *)svptr + dataoffset;
		1211	req->stroffset = dataoffset;
1209		1212
1210	if (!SvREADONLY (data))	1213	if (!SvREADONLY (data))
1211	{	1214	{
1212	SvREADONLY_on (data);	1215	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1216	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1217	}
1215		1218
1216	REQ_SEND;	1219	REQ_SEND;
1217	}	1220	}
1218	}	1221	}
1219		1222
1220	void	1223	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1224	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1222	SV * out_fh	1225	ALIAS:
1223	SV * in_fh	1226	aio_readlink = EIO_READLINK
1224	UV in_offset	1227	aio_realpath = EIO_REALPATH
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	1228	PPCODE:
1229	{	1229	{
		1230	dREQ;
		1231
		1232	req->type = ix;
		1233	req_set_path1 (req, pathname);
		1234
		1235	REQ_SEND;
		1236	}
		1237
		1238	void
		1239	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1240	PPCODE:
		1241	{
		1242	int ifd = s_fileno_croak (in_fh , 0);
		1243	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	1244	dREQ;
1231		1245
1232	req->type = REQ_SENDFILE;	1246	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1247	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1248	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1249	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1250	req->int2 = ifd;
1237	req->offset = in_offset;	1251	req->offs = in_offset;
1238	req->length = length;	1252	req->size = length;
1239		1253
1240	REQ_SEND;	1254	REQ_SEND;
1241	}	1255	}
1242		1256
1243	void	1257	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1258	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:	1259	PPCODE:
1251	{	1260	{
		1261	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1262	dREQ;
1253		1263
1254	req->type = REQ_READAHEAD;	1264	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1265	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1266	req->int1 = fd;
1257	req->offset = offset;	1267	req->offs = offset;
1258	req->length = length;	1268	req->size = length;
1259		1269
1260	REQ_SEND;	1270	REQ_SEND;
1261	}	1271	}
1262		1272
1263	void	1273	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1274	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1275	ALIAS:
1268	aio_stat = REQ_STAT	1276	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1277	aio_lstat = EIO_LSTAT
		1278	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1279	PPCODE:
1271	{	1280	{
1272	dREQ;	1281	dREQ;
1273		1282
1274	New (0, req->statdata, 1, Stat_t);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280
1281	if (SvPOK (fh_or_path))
1282	{
1283	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);
1286	}
1287	else
1288	{
1289	req->type = REQ_FSTAT;
1290	req->fh = newSVsv (fh_or_path);	1283	req->sv1 = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1284	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1292	}
1293
1294	REQ_SEND;	1285	REQ_SEND;
1295	}	1286	}
1296		1287
		1288	UV
		1289	major (UV dev)
		1290	ALIAS:
		1291	minor = 1
		1292	CODE:
		1293	RETVAL = ix ? major (dev) : minor (dev);
		1294	OUTPUT:
		1295	RETVAL
		1296
		1297	UV
		1298	makedev (UV maj, UV min)
		1299	CODE:
		1300	RETVAL = makedev (maj, min);
		1301	OUTPUT:
		1302	RETVAL
		1303
1297	void	1304	void
		1305	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1306	PPCODE:
		1307	{
		1308	dREQ;
		1309
		1310	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1311	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1312	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1313
		1314	REQ_SEND;
		1315	}
		1316
		1317	void
		1318	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1319	PPCODE:
		1320	{
		1321	dREQ;
		1322
		1323	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1324	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1325
		1326	REQ_SEND;
		1327	}
		1328
		1329	void
		1330	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1331	ALIAS:
		1332	aio_chmod = EIO_CHMOD
		1333	aio_mkdir = EIO_MKDIR
		1334	PPCODE:
		1335	{
		1336	dREQ;
		1337
		1338	req->int2 = mode;
		1339	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1340
		1341	REQ_SEND;
		1342	}
		1343
		1344	void
		1345	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1346	PPCODE:
		1347	{
		1348	dREQ;
		1349
		1350	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1351	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1352	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1353
		1354	REQ_SEND;
		1355	}
		1356
		1357	void
		1358	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1359	PPCODE:
		1360	{
		1361	dREQ;
		1362
		1363	req->type = EIO_READDIR;
		1364	req->sv1 = newSVsv (pathname);
		1365	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1366	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1367
		1368	if (flags & EIO_READDIR_DENTS)
		1369	req->int1 |= EIO_READDIR_CUSTOM2;
		1370
		1371	REQ_SEND;
		1372	}
		1373
		1374	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1375	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1376	ALIAS:
1302	aio_unlink = REQ_UNLINK	1377	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1378	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1379	aio_readdir = EIO_READDIR
1305	PPCODE:	1380	PPCODE:
1306	{	1381	{
1307	dREQ;	1382	dREQ;
1308		1383
1309	req->type = ix;	1384	req->type = ix;
1310	req->data = newSVsv (pathname);	1385	req_set_path1 (req, pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1386
		1387	REQ_SEND;
		1388	}
		1389
		1390	void
		1391	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1392	ALIAS:
		1393	aio_link = EIO_LINK
		1394	aio_symlink = EIO_SYMLINK
		1395	aio_rename = EIO_RENAME
		1396	PPCODE:
		1397	{
		1398	dREQ;
		1399	eio_wd wd2;
		1400
		1401	req->type = ix;
		1402	req_set_path1 (req, oldpath);
		1403	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1404	req->int3 = (long)wd2;
1312		1405
1313	REQ_SEND;	1406	REQ_SEND;
1314	}	1407	}
1315		1408
1316	void	1409	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1410	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:
1322	aio_link = REQ_LINK
1323	aio_symlink = REQ_SYMLINK
1324	aio_rename = REQ_RENAME
1325	PPCODE:	1411	PPCODE:
1326	{	1412	{
1327	dREQ;	1413	dREQ;
1328		1414
1329	req->type = ix;	1415	req->type = EIO_MKNOD;
1330	req->fh = newSVsv (oldpath);	1416	req->int2 = (mode_t)mode;
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1417	req->offs = dev;
1332	req->data = newSVsv (newpath);	1418	req_set_path1 (req, pathname);
1333	req->dataptr = SvPVbyte_nolen (req->data);
1334		1419
1335	REQ_SEND;	1420	REQ_SEND;
1336	}	1421	}
1337		1422
1338	void	1423	void
		1424	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1425	ALIAS:
		1426	aio_mtouch = EIO_MTOUCH
		1427	aio_msync = EIO_MSYNC
		1428	PPCODE:
		1429	{
		1430	STRLEN svlen;
		1431	char *svptr = SvPVbyte (data, svlen);
		1432	UV len = SvUV (length);
		1433
		1434	if (offset < 0)
		1435	offset += svlen;
		1436
		1437	if (offset < 0 || offset > svlen)
		1438	croak ("offset outside of scalar");
		1439
		1440	if (!SvOK (length) || len + offset > svlen)
		1441	len = svlen - offset;
		1442
		1443	{
		1444	dREQ;
		1445
		1446	req->type = ix;
		1447	req->sv2 = SvREFCNT_inc (data);
		1448	req->ptr2 = (char *)svptr + offset;
		1449	req->size = len;
		1450	req->int1 = flags;
		1451
		1452	REQ_SEND;
		1453	}
		1454	}
		1455
		1456	void
		1457	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1458	PPCODE:
		1459	{
		1460	STRLEN svlen;
		1461	char *svptr = SvPVbyte (data, svlen);
		1462	UV len = SvUV (length);
		1463
		1464	if (offset < 0)
		1465	offset += svlen;
		1466
		1467	if (offset < 0 || offset > svlen)
		1468	croak ("offset outside of scalar");
		1469
		1470	if (!SvOK (length) || len + offset > svlen)
		1471	len = svlen - offset;
		1472
		1473	{
		1474	dREQ;
		1475
		1476	req->type = EIO_MLOCK;
		1477	req->sv2 = SvREFCNT_inc (data);
		1478	req->ptr2 = (char *)svptr + offset;
		1479	req->size = len;
		1480
		1481	REQ_SEND;
		1482	}
		1483	}
		1484
		1485	void
		1486	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1487	PPCODE:
		1488	{
		1489	dREQ;
		1490
		1491	req->type = EIO_MLOCKALL;
		1492	req->int1 = flags;
		1493
		1494	REQ_SEND;
		1495	}
		1496
		1497	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1498	aio_busy (double delay, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1499	PPCODE:
1343	{	1500	{
1344	dREQ;	1501	dREQ;
1345		1502
1346	req->type = REQ_BUSY;	1503	req->type = EIO_BUSY;
1347	req->fd = delay < 0. ? 0 : delay;	1504	req->nv1 = delay < 0. ? 0. : delay;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1349		1505
1350	REQ_SEND;	1506	REQ_SEND;
1351	}	1507	}
1352		1508
1353	void	1509	void
1354	aio_group (callback=&PL_sv_undef)	1510	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$
1357	PPCODE:	1511	PPCODE:
1358	{	1512	{
1359	dREQ;	1513	dREQ;
1360		1514
1361	req->type = REQ_GROUP;	1515	req->type = EIO_GROUP;
		1516
1362	req_send (req);	1517	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1518	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1519	}
1366		1520
1367	void	1521	void
1368	aio_nop (callback=&PL_sv_undef)	1522	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1523	ALIAS:
		1524	aio_nop = EIO_NOP
		1525	aio_sync = EIO_SYNC
1370	PPCODE:	1526	PPCODE:
1371	{	1527	{
1372	dREQ;	1528	dREQ;
1373		1529
1374	req->type = REQ_NOP;	1530	req->type = ix;
1375		1531
1376	REQ_SEND;	1532	REQ_SEND;
1377	}	1533	}
1378		1534
1379	void	1535	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1536	aioreq_pri (int pri = 0)
1381	CODE:	1537	CODE:
		1538	RETVAL = next_pri;
		1539	if (items > 0)
		1540	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1541	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1542	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1543	next_pri = pri;
		1544	}
		1545	OUTPUT:
		1546	RETVAL
1385		1547
1386	void	1548	void
1387	aioreq_nice (int nice = 0)	1549	aioreq_nice (int nice = 0)
1388	CODE:	1550	CODE:
1389	nice = next_pri - nice;	1551	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1552	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1553	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1554	next_pri = nice;
1393		1555
1394	void	1556	void
1395	flush ()	1557	flush ()
1396	PROTOTYPE:
1397	CODE:	1558	CODE:
1398	while (nreqs)	1559	while (eio_nreqs ())
1399	{	1560	{
1400	poll_wait ();	1561	poll_wait ();
1401	poll_cb ();	1562	poll_cb ();
1402	}	1563	}
1403		1564
1404	void
1405	poll()
1406	PROTOTYPE:
1407	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();
1411	poll_cb ();
1412	}
1413
1414	int	1565	int
1415	poll_fileno()	1566	poll ()
1416	PROTOTYPE:
1417	CODE:	1567	CODE:
1418	RETVAL = respipe [0];	1568	poll_wait ();
1419	OUTPUT:
1420	RETVAL
1421
1422	int
1423	poll_cb(...)
1424	PROTOTYPE:
1425	CODE:
1426	RETVAL = poll_cb ();	1569	RETVAL = poll_cb ();
1427	OUTPUT:	1570	OUTPUT:
1428	RETVAL	1571	RETVAL
1429		1572
1430	void
1431	poll_wait()
1432	PROTOTYPE:
1433	CODE:
1434	if (nreqs)
1435	poll_wait ();
1436
1437	int	1573	int
1438	nreqs()	1574	poll_fileno ()
1439	PROTOTYPE:
1440	CODE:	1575	CODE:
1441	RETVAL = nreqs;	1576	RETVAL = s_epipe_fd (&respipe);
1442	OUTPUT:	1577	OUTPUT:
1443	RETVAL	1578	RETVAL
1444		1579
		1580	int
		1581	poll_cb (...)
		1582	PROTOTYPE:
		1583	CODE:
		1584	RETVAL = poll_cb ();
		1585	OUTPUT:
		1586	RETVAL
		1587
		1588	void
		1589	poll_wait ()
		1590	CODE:
		1591	poll_wait ();
		1592
		1593	int
		1594	nreqs ()
		1595	CODE:
		1596	RETVAL = eio_nreqs ();
		1597	OUTPUT:
		1598	RETVAL
		1599
		1600	int
		1601	nready ()
		1602	CODE:
		1603	RETVAL = eio_nready ();
		1604	OUTPUT:
		1605	RETVAL
		1606
		1607	int
		1608	npending ()
		1609	CODE:
		1610	RETVAL = eio_npending ();
		1611	OUTPUT:
		1612	RETVAL
		1613
		1614	int
		1615	nthreads ()
		1616	CODE:
		1617	RETVAL = eio_nthreads ();
		1618	OUTPUT:
		1619	RETVAL
		1620
		1621	int
		1622	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1623	CODE:
		1624	RETVAL = posix_fadvise (fh, offset, length, advice);
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	IV
		1629	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1630	CODE:
		1631	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	void
		1636	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1637	PPCODE:
		1638	sv_unmagic (scalar, MMAP_MAGIC);
		1639	{
		1640	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1641	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1642	if (addr == (void *)-1)
		1643	XSRETURN_NO;
		1644
		1645	sv_force_normal (scalar);
		1646
		1647	/* we store the length in mg_obj, as namlen is I32 :/ */
		1648	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1649	->mg_obj = (SV *)length;
		1650
		1651	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1652
		1653	if (!(prot & PROT_WRITE))
		1654	SvREADONLY_on (scalar);
		1655
		1656	if (SvLEN (scalar))
		1657	Safefree (SvPVX (scalar));
		1658
		1659	SvPVX (scalar) = (char *)addr;
		1660	SvCUR_set (scalar, length);
		1661	SvLEN_set (scalar, 0);
		1662	SvPOK_only (scalar);
		1663
		1664	XSRETURN_YES;
		1665	}
		1666
		1667	void
		1668	munmap (SV *scalar)
		1669	CODE:
		1670	sv_unmagic (scalar, MMAP_MAGIC);
		1671
		1672	int
		1673	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1674	ALIAS:
		1675	mprotect = 1
		1676	CODE:
		1677	{
		1678	STRLEN svlen;
		1679	void *addr = SvPVbyte (scalar, svlen);
		1680	size_t len = SvUV (length);
		1681
		1682	if (offset < 0)
		1683	offset += svlen;
		1684
		1685	if (offset < 0 || offset > svlen)
		1686	croak ("offset outside of scalar");
		1687
		1688	if (!SvOK (length) || len + offset > svlen)
		1689	len = svlen - offset;
		1690
		1691	addr = (void *)(((intptr_t)addr) + offset);
		1692	eio_page_align (&addr, &len);
		1693
		1694	switch (ix)
		1695	{
		1696	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1697	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1698	}
		1699	}
		1700	OUTPUT:
		1701	RETVAL
		1702
		1703	int
		1704	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1705	CODE:
		1706	{
		1707	STRLEN svlen;
		1708	void *addr = SvPVbyte (scalar, svlen);
		1709	size_t len = SvUV (length);
		1710
		1711	if (offset < 0)
		1712	offset += svlen;
		1713
		1714	if (offset < 0 || offset > svlen)
		1715	croak ("offset outside of scalar");
		1716
		1717	if (!SvOK (length) || len + offset > svlen)
		1718	len = svlen - offset;
		1719
		1720	addr = (void *)(((intptr_t)addr) + offset);
		1721	eio_page_align (&addr, &len);
		1722	#if _POSIX_MEMLOCK_RANGE
		1723	RETVAL = munlock (addr, len);
		1724	#else
		1725	RETVAL = ((errno = ENOSYS), -1);
		1726	#endif
		1727	}
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	munlockall ()
		1733	CODE:
		1734	#if _POSIX_MEMLOCK
		1735	munlockall ();
		1736	#else
		1737	RETVAL = -1;
		1738	errno = ENOSYS;
		1739	#endif
		1740	OUTPUT:
		1741	RETVAL
		1742
		1743	void _on_next_submit (SV *cb)
		1744	CODE:
		1745	SvREFCNT_dec (on_next_submit);
		1746	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1747
1445	PROTOTYPES: DISABLE	1748	PROTOTYPES: DISABLE
1446		1749
		1750	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1751
		1752	BOOT:
		1753	{
		1754	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1755	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1756	}
		1757
		1758	void
		1759	DESTROY (SV *self)
		1760	CODE:
		1761	{
		1762	aio_wd wd = SvAIO_WD (self);
		1763	#if HAVE_AT
		1764	SV *callback = &PL_sv_undef;
		1765	dREQ; /* clobbers next_pri :/ */
		1766	req->type = EIO_WD_CLOSE;
		1767	req->wd = wd;
		1768	REQ_SEND;
		1769	#else
		1770	eio_wd_close_sync (wd);
		1771	#endif
		1772	}
		1773
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1774	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1775
1449	void	1776	void
1450	cancel (aio_req_ornot req)	1777	cancel (aio_req_ornot req)
1451	CODE:	1778	CODE:
1452	req_cancel (req);	1779	eio_cancel (req);
1453		1780
1454	void	1781	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1782	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1456	CODE:	1783	PPCODE:
		1784	{
		1785	if (GIMME_V != G_VOID)
		1786	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1787
		1788	if (items > 1)
		1789	{
		1790	SV *cb_cv =get_cb (callback);
		1791
1457	SvREFCNT_dec (req->callback);	1792	SvREFCNT_dec (req->callback);
1458	req->callback = newSVsv (callback);	1793	req->callback = SvREFCNT_inc (cb_cv);
		1794	}
		1795	}
1459		1796
1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1797	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1461		1798
1462	void	1799	void
1463	add (aio_req grp, ...)	1800	add (aio_req grp, ...)
1464	PPCODE:	1801	PPCODE:
1465	{	1802	{
1466	int i;	1803	int i;
1467	aio_req req;
1468		1804
1469	if (grp->fd == 2)	1805	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1806	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1807
1472	for (i = 1; i < items; ++i )	1808	for (i = 1; i < items; ++i )
1473	{	1809	{
		1810	aio_req req;
		1811
1474	if (GIMME_V != G_VOID)	1812	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1813	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		1814
1477	req = SvAIO_REQ (ST (i));	1815	req = SvAIO_REQ (ST (i));
1478		1816
1479	if (req)	1817	if (req)
1480	{	1818	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	1819	}
1493	}	1820	}
1494		1821
1495	void	1822	void
1496	cancel_subs (aio_req_ornot req)	1823	cancel_subs (aio_req_ornot req)
…		…
1500	void	1827	void
1501	result (aio_req grp, ...)	1828	result (aio_req grp, ...)
1502	CODE:	1829	CODE:
1503	{	1830	{
1504	int i;	1831	int i;
		1832	AV *av;
		1833
		1834	grp->errorno = errno;
		1835
1505	AV *av = newAV ();	1836	av = newAV ();
		1837	av_extend (av, items - 1);
1506		1838
1507	for (i = 1; i < items; ++i )	1839	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1840	av_push (av, newSVsv (ST (i)));
1509		1841
1510	SvREFCNT_dec (grp->data);	1842	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1843	grp->sv1 = (SV *)av;
1512	}	1844	}
		1845
		1846	void
		1847	errno (aio_req grp, int errorno = errno)
		1848	CODE:
		1849	grp->errorno = errorno;
1513		1850
1514	void	1851	void
1515	limit (aio_req grp, int limit)	1852	limit (aio_req grp, int limit)
1516	CODE:	1853	CODE:
1517	grp->fd2 = limit;	1854	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		1855
1520	void	1856	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1857	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1858	CODE:
1523	{	1859	{
1524	SvREFCNT_dec (grp->fh2);	1860	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1861	grp->sv2 = newSVsv (callback);
		1862	grp->feed = aio_grp_feed;
1526		1863
1527	if (grp->fd2 <= 0)	1864	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1865	grp->int2 = 2;
1529		1866
1530	aio_grp_feed (grp);	1867	eio_grp_limit (grp, grp->int2);
1531	}	1868	}
1532		1869

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