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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.84 by root, Sat Oct 28 01:24:19 2006 UTC vs.
Revision 1.184 by root, Tue Jul 5 20:34:42 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
27	#include <limits.h>	17	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	18	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	19	#include <sched.h>
32		20
33	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>	22	# include <sys/mman.h>
36	# elif __freebsd	23	#endif
37	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
38	# include <sys/uio.h>	68	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	/* Linux/others */
		127	#ifndef O_ASYNC
		128	# define O_ASYNC 0
		129	#endif
		130	#ifndef O_DIRECT
		131	# define O_DIRECT 0
		132	#endif
		133	#ifndef O_NOATIME
		134	# define O_NOATIME 0
		135	#endif
		136
		137	/* POSIX */
		138	#ifndef O_CLOEXEC
		139	# define O_CLOEXEC 0
		140	#endif
		141	#ifndef O_NOFOLLOW
		142	# define O_NOFOLLOW 0
		143	#endif
		144	#ifndef O_NOCTTY
		145	# define O_NOCTTY 0
		146	#endif
		147	#ifndef O_NONBLOCK
		148	# define O_NONBLOCK 0
		149	#endif
		150	#ifndef O_EXEC
		151	# define O_EXEC 0
		152	#endif
		153	#ifndef O_SEARCH
		154	# define O_SEARCH 0
		155	#endif
		156	#ifndef O_DIRECTORY
		157	# define O_DIRECTORY 0
		158	#endif
		159	#ifndef O_DSYNC
		160	# define O_DSYNC 0
		161	#endif
		162	#ifndef O_RSYNC
		163	# define O_RSYNC 0
		164	#endif
		165	#ifndef O_SYNC
		166	# define O_SYNC 0
		167	#endif
		168	#ifndef O_TTY_INIT
		169	# define O_TTY_INIT 0
		170	#endif
		171
		172	#ifndef POSIX_FADV_NORMAL
		173	# define POSIX_FADV_NORMAL 0
		174	#endif
		175	#ifndef POSIX_FADV_SEQUENTIAL
		176	# define POSIX_FADV_SEQUENTIAL 0
		177	#endif
		178	#ifndef POSIX_FADV_RANDOM
		179	# define POSIX_FADV_RANDOM 0
		180	#endif
		181	#ifndef POSIX_FADV_NOREUSE
		182	# define POSIX_FADV_NOREUSE 0
		183	#endif
		184	#ifndef POSIX_FADV_WILLNEED
		185	# define POSIX_FADV_WILLNEED 0
		186	#endif
		187	#ifndef POSIX_FADV_DONTNEED
		188	# define POSIX_FADV_DONTNEED 0
		189	#endif
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#ifndef POSIX_MADV_NORMAL
		196	# define POSIX_MADV_NORMAL 0
		197	#endif
		198	#ifndef POSIX_MADV_SEQUENTIAL
		199	# define POSIX_MADV_SEQUENTIAL 0
		200	#endif
		201	#ifndef POSIX_MADV_RANDOM
		202	# define POSIX_MADV_RANDOM 0
		203	#endif
		204	#ifndef POSIX_MADV_WILLNEED
		205	# define POSIX_MADV_WILLNEED 0
		206	#endif
		207	#ifndef POSIX_MADV_DONTNEED
		208	# define POSIX_MADV_DONTNEED 0
		209	#endif
		210
		211	#if !HAVE_POSIX_MADVISE
		212	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		213	#endif
		214
		215	#ifndef PROT_NONE
		216	# define PROT_NONE 0
		217	#endif
		218	#ifndef PROT_READ
		219	# define PROT_READ 0
		220	#endif
		221	#ifndef PROT_WRITE
		222	# define PROT_READ 0
		223	#endif
		224	#ifndef PROT_EXEC
		225	# define PROT_EXEC 0
		226	#endif
		227
		228	#ifndef ST_NODEV
		229	# define ST_NODEV 0
		230	#endif
		231	#ifndef ST_NOEXEC
		232	# define ST_NOEXEC 0
		233	#endif
		234	#ifndef ST_SYNCHRONOUS
		235	# define ST_SYNCHRONOUS 0
		236	#endif
		237	#ifndef ST_MANDLOCK
		238	# define ST_MANDLOCK 0
		239	#endif
		240	#ifndef ST_WRITE
		241	# define ST_WRITE 0
		242	#endif
		243	#ifndef ST_APPEND
		244	# define ST_APPEND 0
		245	#endif
		246	#ifndef ST_IMMUTABLE
		247	# define ST_IMMUTABLE 0
		248	#endif
		249	#ifndef ST_NOATIME
		250	# define ST_NOATIME 0
		251	#endif
		252	#ifndef ST_NODIRATIME
		253	# define ST_NODIRATIME 0
		254	#endif
		255	#ifndef ST_RELATIME
		256	# define ST_RELATIME 0
		257	#endif
		258
		259	#ifndef S_IFIFO
		260	# define S_IFIFO 0
		261	#endif
		262	#ifndef S_IFCHR
		263	# define S_IFCHR 0
		264	#endif
		265	#ifndef S_IFBLK
		266	# define S_IFBLK 0
		267	#endif
		268	#ifndef S_IFLNK
		269	# define S_IFLNK 0
		270	#endif
		271	#ifndef S_IFREG
		272	# define S_IFREG 0
		273	#endif
		274	#ifndef S_IFDIR
		275	# define S_IFDIR 0
		276	#endif
		277	#ifndef S_IFWHT
		278	# define S_IFWHT 0
		279	#endif
		280	#ifndef S_IFSOCK
		281	# define S_IFSOCK 0
		282	#endif
		283
		284	#ifndef MAP_ANONYMOUS
		285	# ifdef MAP_ANON
		286	# define MAP_ANONYMOUS MAP_ANON
43	# else	287	# else
44	# error sendfile support requested but not available	288	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	289	# endif
46	#endif	290	#endif
47		291	#ifndef MAP_HUGETLB
48	/* number of seconds after which idle threads exit */	292	# define MAP_HUGETLB 0
49	#define IDLE_TIMEOUT 10
50
51	/* used for struct dirent, AIX doesn't provide it */
52	#ifndef NAME_MAX
53	# define NAME_MAX 4096
54	#endif
55
56	#ifndef PTHREAD_STACK_MIN
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDREAD_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDREAD_UNSAFE 0
76	# else
77	# define WORDREAD_UNSAFE 1
78	# endif	293	#endif
		294	#ifndef MAP_LOCKED
		295	# define MAP_LOCKED 0
79	#endif	296	#endif
		297	#ifndef MAP_NORESERVE
		298	# define MAP_NORESERVE 0
		299	#endif
		300	#ifndef MAP_POPULATE
		301	# define MAP_POPULATE 0
		302	#endif
		303	#ifndef MAP_NONBLOCK
		304	# define MAP_NONBLOCK 0
		305	#endif
80		306
81	/* buffer size for various temporary buffers */	307	#ifndef makedev
82	#define AIO_BUFSIZE 65536	308	# define makedev(maj,min) (((maj) << 8) | (min))
		309	#endif
		310	#ifndef major
		311	# define major(dev) ((dev) >> 8)
		312	#endif
		313	#ifndef minor
		314	# define minor(dev) ((dev) & 0xff)
		315	#endif
83		316
84	#define dBUF \	317	#ifndef PAGESIZE
85	char *aio_buf; \	318	# define PAGESIZE sysconf (_SC_PAGESIZE)
86	LOCK (wrklock); \	319	#endif
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	320
88	UNLOCK (wrklock); \	321	static int req_invoke (eio_req *req);
89	if (!aio_buf) \	322	#define EIO_FINISH(req) req_invoke (req)
90	return -1;	323	static void req_destroy (eio_req *grp);
		324	#define EIO_DESTROY(req) req_destroy (req)
91		325
92	enum {	326	enum {
93	REQ_QUIT,	327	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};	328	};
105		329
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	330	#include "libeio/eio.c"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		331
109	typedef struct aio_cb
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;
114	SV *fh, *fh2;
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;
122	int type;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126
127	unsigned char flags;
128	unsigned char pri;
129
130	SV *self; /* the perl counterpart of this request, if any */
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132	} aio_cb;
133
134	enum {
135	FLAG_CANCELLED = 0x01,
136	};
137
138	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
140		334
141	enum {	335	static SV *on_next_submit;
142	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	337	static int max_outstanding;
144		338
145	DEFAULT_PRI = 0,	339	static s_epipe respipe;
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		340
150	static int next_pri = DEFAULT_PRI + PRI_BIAS;
151
152	static unsigned int started, idle, wanted;
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static volatile unsigned int nreqs, nready, npending;
204	static volatile unsigned int max_idle = 4;
205	static volatile unsigned int max_outstanding = 0xffffffff;
206	static int respipe [2];
207
208	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
209	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
210	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212	#if WORDREAD_UNSAFE
213
214	static unsigned int get_nready ()
215	{
216	unsigned int retval;
217
218	LOCK (reqlock);
219	retval = nready;
220	UNLOCK (reqlock);
221
222	return retval;
223	}
224
225	static unsigned int get_npending ()
226	{
227	unsigned int retval;
228
229	LOCK (reslock);
230	retval = npending;
231	UNLOCK (reslock);
232
233	return retval;
234	}
235
236	#else
237
238	# define get_nready() nready
239	# define get_npending() npending
240
241	#endif
242
243	/*
244	* a somewhat faster data structure might be nice, but
245	* with 8 priorities this actually needs <20 insns
246	* per shift, the most expensive operation.
247	*/
248	typedef struct {
249	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
250	int size;
251	} reqq;
252
253	static reqq req_queue;
254	static reqq res_queue;
255
256	int reqq_push (reqq *q, aio_req req)
257	{
258	int pri = req->pri;
259	req->next = 0;
260
261	if (q->qe[pri])
262	{
263	q->qe[pri]->next = req;
264	q->qe[pri] = req;
265	}
266	else
267	q->qe[pri] = q->qs[pri] = req;
268
269	return q->size++;
270	}
271
272	aio_req reqq_shift (reqq *q)
273	{
274	int pri;
275
276	if (!q->size)
277	return 0;
278
279	--q->size;
280
281	for (pri = NUM_PRI; pri--; )
282	{
283	aio_req req = q->qs[pri];
284
285	if (req)
286	{
287	if (!(q->qs[pri] = req->next))
288	q->qe[pri] = 0;
289
290	return req;
291	}
292	}
293
294	abort ();
295	}
296
297	static int poll_cb (int max);
298	static void req_invoke (aio_req req);
299	static void req_free (aio_req req);	341	static void req_destroy (aio_req req);
300	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
301		343
		344	static void want_poll (void)
		345	{
		346	/* write a dummy byte to the pipe so fh becomes ready */
		347	s_epipe_signal (&respipe);
		348	}
		349
		350	static void done_poll (void)
		351	{
		352	/* read any signals sent by the worker threads */
		353	s_epipe_drain (&respipe);
		354	}
		355
302	/* must be called at most once */	356	/* must be called at most once */
303	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
304	{	358	{
305	if (!req->self)	359	if (!req->self)
306	{	360	{
307	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
308	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
309	}	363	}
310		364
311	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
312	}	366	}
313		367
314	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
315	{	369	{
316	MAGIC *mg;	370	MAGIC *mg;
317		371
318	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	372	if (!SvROK (sv)
		373	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		374	&& SvSTASH (SvRV (sv)) != aio_req_stash
		375	&& !sv_derived_from (sv, "IO::AIO::REQ")))
319	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
320		377
321	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
322		379
323	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
324	}	381	}
325		382
326	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
327	{	384	{
328	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	385	if (grp->sv2 && SvOK (grp->sv2))
329	{	386	{
330	int old_len = grp->length;
331
332	if (grp->fh2 && SvOK (grp->fh2))
333	{
334	dSP;	387	dSP;
335		388
336	ENTER;	389	ENTER;
337	SAVETMPS;	390	SAVETMPS;
338	PUSHMARK (SP);	391	PUSHMARK (SP);
339	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
340	PUTBACK;	393	PUTBACK;
341	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342	SPAGAIN;	395	SPAGAIN;
343	FREETMPS;	396	FREETMPS;
344	LEAVE;	397	LEAVE;
345	}
346
347	/* stop if no progress has been made */
348	if (old_len == grp->length)
349	{
350	SvREFCNT_dec (grp->fh2);
351	grp->fh2 = 0;
352	break;
353	}
354	}	398	}
355	}	399	}
356		400
357	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
358	{	402	{
359	--grp->length;	403	eio_submit (req);
360		404
361	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
362	aio_grp_feed (grp);
363
364	/* finish, if done */
365	if (!grp->length && grp->fd)
366	{	406	{
367	req_invoke (grp);	407	dSP;
368	req_free (grp);	408	SV *cb = sv_2mortal (on_next_submit);
		409
		410	on_next_submit = 0;
		411
		412	PUSHMARK (SP);
		413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
369	}	415	}
370	}	416	}
371		417
372	static void req_invoke (aio_req req)	418	static int req_invoke (eio_req *req)
373	{	419	{
374	dSP;	420	if (req->flags & FLAG_SV2_RO_OFF)
		421	SvREADONLY_off (req->sv2);
375		422
376	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	423	if (!EIO_CANCELLED (req) && req->callback)
377	{	424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
378	ENTER;	429	ENTER;
379	SAVETMPS;	430	SAVETMPS;
380	PUSHMARK (SP);	431	PUSHMARK (SP);
381	EXTEND (SP, 1);	432	EXTEND (SP, 1);
382		433
		434	/* do not recreate the result IV from scratch each time */
		435	if (expect_true (sv_result_cache))
		436	{
		437	sv_result = sv_result_cache; sv_result_cache = 0;
		438	SvIV_set (sv_result, req->result);
		439	SvIOK_only (sv_result);
		440	}
		441	else
		442	{
		443	sv_result = newSViv (req->result);
		444	SvREADONLY_on (sv_result);
		445	}
		446
383	switch (req->type)	447	switch (req->type)
384	{	448	{
385	case REQ_READDIR:	449	case EIO_READDIR:
386	{	450	{
387	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
388		452
389	if (req->result >= 0)	453	if (req->result >= 0)
390	{	454	{
391	int i;	455	int i;
392	char *buf = req->data2ptr;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
393	AV *av = newAV ();	458	AV *av = newAV ();
394		459
395	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
396		461
397	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
398	{	463	{
399	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
400		467
		468	if (req->int1 & EIO_READDIR_CUSTOM2)
		469	{
		470	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		471	AV *avent = newAV ();
		472
		473	av_extend (avent, 2);
		474
		475	if (!sv_type [ent->type])
		476	{
		477	sv_type [ent->type] = newSViv (ent->type);
		478	SvREADONLY_on (sv_type [ent->type]);
		479	}
		480
		481	av_store (avent, 0, namesv);
		482	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		483	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		484
		485	av_store (av, i, newRV_noinc ((SV *)avent));
		486	}
		487	else
401	av_store (av, i, sv);	488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
		494	SV *name = newSVpv (names, 0);
		495	av_store (av, i, name);
402	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
403	}	498	}
404		499
405	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
406	}	501	}
407		502
408	PUSHs (rv);	503	PUSHs (rv);
		504
		505	if (req->int1 & EIO_READDIR_CUSTOM1)
		506	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
409	}	507	}
410	break;	508	break;
411		509
412	case REQ_OPEN:	510	case EIO_OPEN:
413	{	511	{
414	/* convert fd to fh */	512	/* convert fd to fh */
415	SV *fh;	513	SV *fh = &PL_sv_undef;
416		514
417	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
418	PUTBACK;	516	{
419	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
420	SPAGAIN;	518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		519	char sym [64];
		520	int symlen;
		521
		522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		523	gv_init (gv, aio_stash, sym, symlen, 0);
421		524
422	fh = SvREFCNT_inc (POPs);	525	symlen = snprintf (
		526	sym,
		527	sizeof (sym),
		528	"%s&=%d",
		529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		530	(int)req->result
		531	);
423		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
424	PUSHMARK (SP);	537	PUSHs (fh);
425	XPUSHs (sv_2mortal (fh));
426	}	538	}
427	break;	539	break;
428		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	if (req->result >= 0)
		547	{
		548	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		549	HV *hv = newHV ();
		550
		551	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		552
		553	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		554	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		555	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		556	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		557	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		558	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		559	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		560	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		561	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		562	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		563	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		564	}
		565
		566	PUSHs (rv);
		567	}
		568
		569	break;
		570
429	case REQ_GROUP:	571	case EIO_GROUP:
430	req->fd = 2; /* mark group as finished */	572	req->int1 = 2; /* mark group as finished */
431		573
432	if (req->data)	574	if (req->sv1)
433	{	575	{
434	int i;	576	int i;
435	AV *av = (AV *)req->data;	577	AV *av = (AV *)req->sv1;
436		578
437	EXTEND (SP, AvFILL (av) + 1);	579	EXTEND (SP, AvFILL (av) + 1);
438	for (i = 0; i <= AvFILL (av); ++i)	580	for (i = 0; i <= AvFILL (av); ++i)
439	PUSHs (*av_fetch (av, i, 0));	581	PUSHs (*av_fetch (av, i, 0));
440	}	582	}
441	break;	583	break;
442		584
443	case REQ_NOP:	585	case EIO_NOP:
444	case REQ_BUSY:	586	case EIO_BUSY:
445	break;	587	break;
446		588
		589	case EIO_READLINK:
		590	case EIO_REALPATH:
		591	if (req->result > 0)
		592	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		593	break;
		594
		595	case EIO_STAT:
		596	case EIO_LSTAT:
		597	case EIO_FSTAT:
		598	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		599	PL_laststatval = req->result;
		600	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		601	PUSHs (sv_result);
		602	break;
		603
		604	case EIO_READ:
		605	{
		606	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		607	*SvEND (req->sv2) = 0;
		608	SvPOK_only (req->sv2);
		609	SvSETMAGIC (req->sv2);
		610	PUSHs (sv_result);
		611	}
		612	break;
		613
		614	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		615	if (req->result > 0)
		616	SvIV_set (sv_result, 0);
		617	/* FALLTHROUGH */
		618
447	default:	619	default:
448	PUSHs (sv_2mortal (newSViv (req->result)));	620	PUSHs (sv_result);
449	break;	621	break;
450	}	622	}
451		623
452	errno = req->errorno;	624	errno = req->errorno;
453		625
454	PUTBACK;	626	PUTBACK;
455	call_sv (req->callback, G_VOID | G_EVAL);	627	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456	SPAGAIN;	628	SPAGAIN;
		629
		630	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		631	SvREFCNT_dec (sv_result);
		632	else
		633	sv_result_cache = sv_result;
457		634
458	FREETMPS;	635	FREETMPS;
459	LEAVE;	636	LEAVE;
		637
		638	PUTBACK;
460	}	639	}
461		640
462	if (req->grp)	641	return !!SvTRUE (ERRSV);
463	{
464	aio_req grp = req->grp;
465
466	/* unlink request */
467	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
468	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
469
470	if (grp->grp_first == req)
471	grp->grp_first = req->grp_next;
472
473	aio_grp_dec (grp);
474	}
475
476	if (SvTRUE (ERRSV))
477	{
478	req_free (req);
479	croak (0);
480	}
481	}	642	}
482		643
483	static void req_free (aio_req req)	644	static void req_destroy (aio_req req)
484	{	645	{
485	if (req->self)	646	if (req->self)
486	{	647	{
487	sv_unmagic (req->self, PERL_MAGIC_ext);	648	sv_unmagic (req->self, PERL_MAGIC_ext);
488	SvREFCNT_dec (req->self);	649	SvREFCNT_dec (req->self);
489	}	650	}
490		651
491	SvREFCNT_dec (req->data);
492	SvREFCNT_dec (req->fh);	652	SvREFCNT_dec (req->sv1);
493	SvREFCNT_dec (req->fh2);	653	SvREFCNT_dec (req->sv2);
494	SvREFCNT_dec (req->callback);	654	SvREFCNT_dec (req->callback);
495	Safefree (req->statdata);
496
497	if (req->type == REQ_READDIR)
498	free (req->data2ptr);
499		655
500	Safefree (req);	656	Safefree (req);
501	}	657	}
502		658
503	static void req_cancel_subs (aio_req grp)	659	static void req_cancel_subs (aio_req grp)
504	{	660	{
505	aio_req sub;	661	aio_req sub;
506		662
507	if (grp->type != REQ_GROUP)	663	if (grp->type != EIO_GROUP)
508	return;	664	return;
509		665
510	SvREFCNT_dec (grp->fh2);	666	SvREFCNT_dec (grp->sv2);
511	grp->fh2 = 0;	667	grp->sv2 = 0;
512		668
513	for (sub = grp->grp_first; sub; sub = sub->grp_next)	669	eio_grp_cancel (grp);
514	req_cancel (sub);
515	}	670	}
516		671
517	static void req_cancel (aio_req req)	672	static void create_respipe (void)
518	{	673	{
519	req->flags |= FLAG_CANCELLED;	674	if (s_epipe_renew (&respipe))
520		675	croak ("IO::AIO: unable to initialize result pipe");
521	req_cancel_subs (req);
522	}	676	}
523		677
524	static void *aio_proc(void *arg);
525
526	static void start_thread (void)
527	{
528	sigset_t fullsigset, oldsigset;
529	pthread_attr_t attr;
530
531	worker *wrk = calloc (1, sizeof (worker));
532
533	if (!wrk)
534	croak ("unable to allocate worker thread data");
535
536	pthread_attr_init (&attr);
537	pthread_attr_setstacksize (&attr, STACKSIZE);
538	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539	#ifdef PTHREAD_SCOPE_PROCESS
540	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541	#endif
542
543	sigfillset (&fullsigset);
544
545	LOCK (wrklock);
546	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
547
548	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
549	{
550	wrk->prev = &wrk_first;
551	wrk->next = wrk_first.next;
552	wrk_first.next->prev = wrk;
553	wrk_first.next = wrk;
554	++started;
555	}
556	else
557	free (wrk);
558
559	sigprocmask (SIG_SETMASK, &oldsigset, 0);
560	UNLOCK (wrklock);
561	}
562
563	static void maybe_start_thread ()
564	{
565	if (started >= wanted)
566	return;
567
568	/* todo: maybe use idle here, but might be less exact */
569	if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570	return;
571
572	start_thread ();
573	}
574
575	static void req_send (aio_req req)
576	{
577	++nreqs;
578
579	LOCK (reqlock);
580	++nready;
581	reqq_push (&req_queue, req);
582	pthread_cond_signal (&reqwait);
583	UNLOCK (reqlock);
584
585	maybe_start_thread ();
586	}
587
588	static void end_thread (void)
589	{
590	aio_req req;
591
592	Newz (0, req, 1, aio_cb);
593
594	req->type = REQ_QUIT;
595	req->pri = PRI_MAX + PRI_BIAS;
596
597	LOCK (reqlock);
598	reqq_push (&req_queue, req);
599	pthread_cond_signal (&reqwait);
600	UNLOCK (reqlock);
601
602	LOCK (wrklock);
603	--started;
604	UNLOCK (wrklock);
605	}
606
607	static void min_parallel (int nthreads)
608	{
609	if (wanted < nthreads)
610	wanted = nthreads;
611	}
612
613	static void max_parallel (int nthreads)
614	{
615	if (wanted > nthreads)
616	wanted = nthreads;
617
618	while (started > wanted)
619	end_thread ();
620	}
621
622	static void poll_wait ()	678	static void poll_wait (void)
623	{	679	{
624	fd_set rfd;
625
626	while (nreqs)	680	while (eio_nreqs ())
627	{	681	{
628	int size;	682	int size;
629	if (WORDREAD_UNSAFE) LOCK (reslock);	683
		684	X_LOCK (reslock);
630	size = res_queue.size;	685	size = res_queue.size;
631	if (WORDREAD_UNSAFE) UNLOCK (reslock);	686	X_UNLOCK (reslock);
632		687
633	if (size)	688	if (size)
634	return;	689	return;
635		690
636	maybe_start_thread ();	691	etp_maybe_start_thread ();
637		692
638	FD_ZERO(&rfd);	693	s_epipe_wait (&respipe);
639	FD_SET(respipe [0], &rfd);
640
641	select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	694	}
643	}	695	}
644		696
645	static int poll_cb (int max)	697	static int poll_cb (void)
646	{	698	{
647	dSP;
648	int count = 0;
649	int do_croak = 0;
650	aio_req req;
651
652	for (;;)	699	for (;;)
653	{	700	{
654	while (max <= 0 || count < max)	701	int res = eio_poll ();
655	{
656	maybe_start_thread ();
657		702
658	LOCK (reslock);	703	if (res > 0)
659	req = reqq_shift (&res_queue);
660
661	if (req)
662	{
663	--npending;
664
665	if (!res_queue.size)
666	{
667	/* read any signals sent by the worker threads */
668	char buf [32];
669	while (read (respipe [0], buf, 32) == 32)
670	;
671	}
672	}
673
674	UNLOCK (reslock);
675
676	if (!req)
677	break;
678
679	--nreqs;
680
681	if (req->type == REQ_GROUP && req->length)
682	{
683	req->fd = 1; /* mark request as delayed */
684	continue;
685	}
686	else
687	{
688	if (req->type == REQ_READ)
689	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692	SvREADONLY_off (req->data);
693
694	if (req->statdata)
695	{
696	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697	PL_laststatval = req->result;
698	PL_statcache = *(req->statdata);
699	}
700
701	req_invoke (req);
702
703	count++;
704	}
705
706	req_free (req);
707	}
708
709	if (nreqs <= max_outstanding)
710	break;	704	croak (0);
		705
		706	if (!max_outstanding || max_outstanding > eio_nreqs ())
		707	return res;
711		708
712	poll_wait ();	709	poll_wait ();
713
714	max = 0;
715	}	710	}
716
717	return count;
718	}	711	}
719		712
720	static void create_pipe ()	713	static void atfork_child (void)
721	{	714	{
722	if (pipe (respipe))	715	create_respipe ();
723	croak ("unable to initialize result pipe");
724
725	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
726	croak ("cannot set result pipe to nonblocking mode");
727
728	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
729	croak ("cannot set result pipe to nonblocking mode");
730	}	716	}
731		717
732	/*****************************************************************************/	718	/*****************************************************************************/
733	/* work around various missing functions */
734		719
735	#if !HAVE_PREADWRITE	720	#if !_POSIX_MAPPED_FILES
736	# define pread aio_pread	721	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
737	# define pwrite aio_pwrite	722	# define munmap(addr,length) (errno = ENOSYS, -1)
738
739	/*
740	* make our pread/pwrite safe against themselves, but not against
741	* normal read/write by using a mutex. slows down execution a lot,
742	* but that's your problem, not mine.
743	*/
744	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
745
746	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
747	{
748	ssize_t res;
749	off_t ooffset;
750
751	LOCK (preadwritelock);
752	ooffset = lseek (fd, 0, SEEK_CUR);
753	lseek (fd, offset, SEEK_SET);
754	res = read (fd, buf, count);
755	lseek (fd, ooffset, SEEK_SET);
756	UNLOCK (preadwritelock);
757
758	return res;
759	}
760
761	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = write (fd, buf, count);
770	lseek (fd, offset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775	#endif
776
777	#if !HAVE_FDATASYNC
778	# define fdatasync fsync
779	#endif
780
781	#if !HAVE_READAHEAD
782	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
783
784	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
785	{
786	dBUF;
787
788	while (count > 0)
789	{
790	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
791
792	pread (fd, aio_buf, len, offset);
793	offset += len;
794	count -= len;
795	}
796
797	errno = 0;
798	}
799
800	#endif
801
802	#if !HAVE_READDIR_R
803	# define readdir_r aio_readdir_r
804
805	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
806
807	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
808	{
809	struct dirent *e;
810	int errorno;
811
812	LOCK (readdirlock);
813
814	e = readdir (dirp);
815	errorno = errno;
816
817	if (e)
818	{
819	*res = ent;
820	strcpy (ent->d_name, e->d_name);
821	}
822	else
823	*res = 0;
824
825	UNLOCK (readdirlock);
826
827	errno = errorno;
828	return e ? 0 : -1;
829	}
830	#endif
831
832	/* sendfile always needs emulation */
833	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
834	{
835	ssize_t res;
836
837	if (!count)
838	return 0;
839
840	#if HAVE_SENDFILE
841	# if __linux
842	res = sendfile (ofd, ifd, &offset, count);
843
844	# elif __freebsd
845	/*
846	* Of course, the freebsd sendfile is a dire hack with no thoughts
847	* wasted on making it similar to other I/O functions.
848	*/
849	{
850	off_t sbytes;
851	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
852
853	if (res < 0 && sbytes)
854	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
855	res = sbytes;
856	}
857
858	# elif __hpux
859	res = sendfile (ofd, ifd, offset, count, 0, 0);
860
861	# elif __solaris
862	{
863	struct sendfilevec vec;
864	size_t sbytes;
865
866	vec.sfv_fd = ifd;
867	vec.sfv_flag = 0;
868	vec.sfv_off = offset;
869	vec.sfv_len = count;
870
871	res = sendfilev (ofd, &vec, 1, &sbytes);
872
873	if (res < 0 && sbytes)
874	res = sbytes;
875	}
876
877	# endif	723	#endif
878	#else
879	res = -1;
880	errno = ENOSYS;
881	#endif
882		724
883	if (res < 0	725	#if !_POSIX_MEMORY_PROTECTION
884	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	726	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
885	#if __solaris	727	# define PROT_NONE 0
886	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	728	# define PROT_WRITE 0
		729	# define MAP_PRIVATE 0
		730	# define MAP_SHARED 0
		731	# define MAP_FIXED 0
887	#endif	732	#endif
888	)
889	)
890	{
891	/* emulate sendfile. this is a major pain in the ass */
892	dBUF;
893		733
894	res = 0;	734	#define MMAP_MAGIC PERL_MAGIC_ext
895		735
896	while (count)	736	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
897	{	737	{
898	ssize_t cnt;	738	int old_errno = errno;
899		739	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
900	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	740	errno = old_errno;
901		741
902	if (cnt <= 0)	742	mg->mg_obj = 0; /* just in case */
903	{
904	if (cnt && !res) res = -1;
905	break;
906	}
907		743
908	cnt = write (ofd, aio_buf, cnt);	744	SvREADONLY_off (sv);
909		745
910	if (cnt <= 0)	746	if (SvPVX (sv) != mg->mg_ptr)
911	{	747	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
912	if (cnt && !res) res = -1;
913	break;
914	}
915		748
916	offset += cnt;	749	SvCUR_set (sv, 0);
917	res += cnt;	750	SvPVX (sv) = 0;
918	count -= cnt;	751	SvOK_off (sv);
919	}
920	}
921		752
922	return res;	753	return 0;
923	}	754	}
924		755
925	/* read a full directory */	756	static MGVTBL mmap_vtbl = {
926	static void scandir_ (aio_req req, worker *self)	757	0, 0, 0, 0, mmap_free
927	{	758	};
928	DIR *dirp;
929	union
930	{
931	struct dirent d;
932	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
933	} *u;
934	struct dirent *entp;
935	char *name, *names;
936	int memlen = 4096;
937	int memofs = 0;
938	int res = 0;
939	int errorno;
940
941	LOCK (wrklock);
942	self->dirp = dirp = opendir (req->dataptr);
943	self->dbuf = u = malloc (sizeof (*u));
944	req->data2ptr = names = malloc (memlen);
945	UNLOCK (wrklock);
946
947	if (dirp && u && names)
948	for (;;)
949	{
950	errno = 0;
951	readdir_r (dirp, &u->d, &entp);
952
953	if (!entp)
954	break;
955
956	name = entp->d_name;
957
958	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
959	{
960	int len = strlen (name) + 1;
961
962	res++;
963
964	while (memofs + len > memlen)
965	{
966	memlen *= 2;
967	LOCK (wrklock);
968	req->data2ptr = names = realloc (names, memlen);
969	UNLOCK (wrklock);
970
971	if (!names)
972	break;
973	}
974
975	memcpy (names + memofs, name, len);
976	memofs += len;
977	}
978	}
979
980	if (errno)
981	res = -1;
982
983	req->result = res;
984	}
985		759
986	/*****************************************************************************/	760	/*****************************************************************************/
987		761
988	static void *aio_proc (void *thr_arg)	762	static SV * get_cb (SV *cb_sv)
989	{	763	{
990	aio_req req;	764	SvGETMAGIC (cb_sv);
991	struct timespec ts;	765	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
992	worker *self = (worker *)thr_arg;
993
994	/* try to distribute timeouts somewhat evenly */
995	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996	* (1000000000UL / 1024UL);
997
998	for (;;)
999	{
1000	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
1002	LOCK (reqlock);
1003
1004	for (;;)
1005	{
1006	self->req = req = reqq_shift (&req_queue);
1007
1008	if (req)
1009	break;
1010
1011	++idle;
1012
1013	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014	== ETIMEDOUT)
1015	{
1016	if (idle > max_idle)
1017	{
1018	--idle;
1019	UNLOCK (reqlock);
1020	LOCK (wrklock);
1021	--started;
1022	UNLOCK (wrklock);
1023	goto quit;
1024	}
1025
1026	/* we are allowed to idle, so do so without any timeout */
1027	pthread_cond_wait (&reqwait, &reqlock);
1028	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029	}
1030
1031	--idle;
1032	}
1033
1034	--nready;
1035
1036	UNLOCK (reqlock);
1037
1038	errno = 0; /* strictly unnecessary */
1039
1040	if (!(req->flags & FLAG_CANCELLED))
1041	switch (req->type)
1042	{
1043	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1044	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1045
1046	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1047	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1048
1049	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1050	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1051	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1052
1053	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1054	case REQ_CLOSE: req->result = close (req->fd); break;
1055	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1056	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1057	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1058	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1059	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1061
1062	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1063	case REQ_FSYNC: req->result = fsync (req->fd); break;
1064	case REQ_READDIR: scandir_ (req, self); break;
1065
1066	case REQ_BUSY:
1067	{
1068	struct timeval tv;
1069
1070	tv.tv_sec = req->fd;
1071	tv.tv_usec = req->fd2;
1072
1073	req->result = select (0, 0, 0, 0, &tv);
1074	}
1075
1076	case REQ_GROUP:
1077	case REQ_NOP:
1078	break;
1079
1080	case REQ_QUIT:
1081	goto quit;
1082
1083	default:
1084	req->result = ENOSYS;
1085	break;
1086	}
1087
1088	req->errorno = errno;
1089
1090	LOCK (reslock);
1091
1092	++npending;
1093
1094	if (!reqq_push (&res_queue, req))
1095	/* write a dummy byte to the pipe so fh becomes ready */
1096	write (respipe [1], &respipe, 1);
1097
1098	self->req = 0;
1099	worker_clear (self);
1100
1101	UNLOCK (reslock);
1102	}
1103
1104	quit:
1105	LOCK (wrklock);
1106	worker_free (self);
1107	UNLOCK (wrklock);
1108
1109	return 0;
1110	}
1111
1112	/*****************************************************************************/
1113
1114	static void atfork_prepare (void)
1115	{
1116	LOCK (wrklock);
1117	LOCK (reqlock);
1118	LOCK (reslock);
1119	#if !HAVE_PREADWRITE
1120	LOCK (preadwritelock);
1121	#endif
1122	#if !HAVE_READDIR_R
1123	LOCK (readdirlock);
1124	#endif
1125	}
1126
1127	static void atfork_parent (void)
1128	{
1129	#if !HAVE_READDIR_R
1130	UNLOCK (readdirlock);
1131	#endif
1132	#if !HAVE_PREADWRITE
1133	UNLOCK (preadwritelock);
1134	#endif
1135	UNLOCK (reslock);
1136	UNLOCK (reqlock);
1137	UNLOCK (wrklock);
1138	}
1139
1140	static void atfork_child (void)
1141	{
1142	aio_req prv;
1143
1144	while (prv = reqq_shift (&req_queue))
1145	req_free (prv);
1146
1147	while (prv = reqq_shift (&res_queue))
1148	req_free (prv);
1149
1150	while (wrk_first.next != &wrk_first)
1151	{
1152	worker *wrk = wrk_first.next;
1153
1154	if (wrk->req)
1155	req_free (wrk->req);
1156
1157	worker_clear (wrk);
1158	worker_free (wrk);
1159	}
1160
1161	started = 0;
1162	idle = 0;
1163	nreqs = 0;
1164	nready = 0;
1165	npending = 0;
1166
1167	close (respipe [0]);
1168	close (respipe [1]);
1169	create_pipe ();
1170
1171	atfork_parent ();
1172	}	766	}
1173		767
1174	#define dREQ \	768	#define dREQ \
		769	SV *cb_cv; \
1175	aio_req req; \	770	aio_req req; \
1176	int req_pri = next_pri; \	771	int req_pri = next_pri; \
1177	next_pri = DEFAULT_PRI + PRI_BIAS; \	772	next_pri = EIO_PRI_DEFAULT; \
1178	\	773	\
1179	if (SvOK (callback) && !SvROK (callback)) \	774	cb_cv = get_cb (callback); \
1180	croak ("callback must be undef or of reference type"); \
1181	\	775	\
1182	Newz (0, req, 1, aio_cb); \	776	Newz (0, req, 1, eio_req); \
1183	if (!req) \	777	if (!req) \
1184	croak ("out of memory during aio_req allocation"); \	778	croak ("out of memory during eio_req allocation"); \
1185	\	779	\
1186	req->callback = newSVsv (callback); \	780	req->callback = SvREFCNT_inc (cb_cv); \
1187	req->pri = req_pri	781	req->pri = req_pri
1188		782
1189	#define REQ_SEND \	783	#define REQ_SEND \
		784	PUTBACK; \
1190	req_send (req); \	785	req_submit (req); \
		786	SPAGAIN; \
1191	\	787	\
1192	if (GIMME_V != G_VOID) \	788	if (GIMME_V != G_VOID) \
1193	XPUSHs (req_sv (req, AIO_REQ_KLASS));	789	XPUSHs (req_sv (req, aio_req_stash));
1194		790
1195	MODULE = IO::AIO PACKAGE = IO::AIO	791	MODULE = IO::AIO PACKAGE = IO::AIO
1196		792
1197	PROTOTYPES: ENABLE	793	PROTOTYPES: ENABLE
1198		794
1199	BOOT:	795	BOOT:
1200	{	796	{
		797	static const struct {
		798	const char *name;
		799	IV iv;
		800	} *civ, const_iv[] = {
		801	# define const_niv(name, value) { # name, (IV) value },
		802	# define const_iv(name) { # name, (IV) name },
		803	# define const_eio(name) { # name, (IV) EIO_ ## name },
		804	const_iv (EXDEV)
		805	const_iv (ENOSYS)
		806	const_iv (O_RDONLY)
		807	const_iv (O_WRONLY)
		808	const_iv (O_RDWR)
		809	const_iv (O_CREAT)
		810	const_iv (O_TRUNC)
		811	const_iv (O_EXCL)
		812	const_iv (O_APPEND)
		813
		814	const_iv (O_ASYNC)
		815	const_iv (O_DIRECT)
		816	const_iv (O_NOATIME)
		817
		818	const_iv (O_CLOEXEC)
		819	const_iv (O_NOCTTY)
		820	const_iv (O_NOFOLLOW)
		821	const_iv (O_NONBLOCK)
		822	const_iv (O_EXEC)
		823	const_iv (O_SEARCH)
		824	const_iv (O_DIRECTORY)
		825	const_iv (O_DSYNC)
		826	const_iv (O_RSYNC)
		827	const_iv (O_SYNC)
		828	const_iv (O_TTY_INIT)
		829
		830	const_iv (S_IFIFO)
		831	const_iv (S_IFCHR)
		832	const_iv (S_IFBLK)
		833	const_iv (S_IFLNK)
		834	const_iv (S_IFREG)
		835	const_iv (S_IFDIR)
		836	const_iv (S_IFWHT)
		837	const_iv (S_IFSOCK)
		838	const_iv (S_IFMT)
		839
		840	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		841	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		842	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		843	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		844	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		845	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		846
		847	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		848	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		849	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		850	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		851	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		852
		853	const_iv (ST_RDONLY)
		854	const_iv (ST_NOSUID)
		855	const_iv (ST_NODEV)
		856	const_iv (ST_NOEXEC)
		857	const_iv (ST_SYNCHRONOUS)
		858	const_iv (ST_MANDLOCK)
		859	const_iv (ST_WRITE)
		860	const_iv (ST_APPEND)
		861	const_iv (ST_IMMUTABLE)
		862	const_iv (ST_NOATIME)
		863	const_iv (ST_NODIRATIME)
		864	const_iv (ST_RELATIME)
		865
		866	const_iv (PROT_NONE)
		867	const_iv (PROT_EXEC)
		868	const_iv (PROT_READ)
		869	const_iv (PROT_WRITE)
		870
		871	/*const_iv (MAP_FIXED)*/
		872	const_iv (MAP_PRIVATE)
		873	const_iv (MAP_SHARED)
		874	const_iv (MAP_ANONYMOUS)
		875
		876	/* linuxish */
		877	const_iv (MAP_HUGETLB)
		878	const_iv (MAP_LOCKED)
		879	const_iv (MAP_NORESERVE)
		880	const_iv (MAP_POPULATE)
		881	const_iv (MAP_NONBLOCK)
		882
		883	const_eio (MCL_FUTURE)
		884	const_eio (MCL_CURRENT)
		885
		886	const_eio (MS_ASYNC)
		887	const_eio (MS_INVALIDATE)
		888	const_eio (MS_SYNC)
		889
		890	const_eio (MT_MODIFY)
		891
		892	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		893	const_eio (SYNC_FILE_RANGE_WRITE)
		894	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		895
		896	const_eio (READDIR_DENTS)
		897	const_eio (READDIR_DIRS_FIRST)
		898	const_eio (READDIR_STAT_ORDER)
		899	const_eio (READDIR_FOUND_UNKNOWN)
		900
		901	const_eio (DT_UNKNOWN)
		902	const_eio (DT_FIFO)
		903	const_eio (DT_CHR)
		904	const_eio (DT_DIR)
		905	const_eio (DT_BLK)
		906	const_eio (DT_REG)
		907	const_eio (DT_LNK)
		908	const_eio (DT_SOCK)
		909	const_eio (DT_WHT)
		910	};
		911
1201	HV *stash = gv_stashpv ("IO::AIO", 1);	912	aio_stash = gv_stashpv ("IO::AIO" , 1);
		913	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		914	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1202		915
1203	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	916	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1204	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	917	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1205	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1208	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1209		918
		919	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		920
1210	create_pipe ();	921	create_respipe ();
1211	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1212	}
1213		922
1214	void	923	if (eio_init (want_poll, done_poll) < 0)
1215	min_parallel (int nthreads)	924	croak ("IO::AIO: unable to initialise eio library");
1216	PROTOTYPE: $
1217		925
1218	void	926	/* atfork child called in fifo order, so before eio's handler */
1219	max_parallel (int nthreads)	927	X_THREAD_ATFORK (0, 0, atfork_child);
1220	PROTOTYPE: $	928	}
1221		929
1222	int	930	void
1223	max_outstanding (int maxreqs)	931	max_poll_reqs (unsigned int nreqs)
1224	PROTOTYPE: $	932	PROTOTYPE: $
1225	CODE:	933	CODE:
1226	RETVAL = max_outstanding;	934	eio_set_max_poll_reqs (nreqs);
		935
		936	void
		937	max_poll_time (double nseconds)
		938	PROTOTYPE: $
		939	CODE:
		940	eio_set_max_poll_time (nseconds);
		941
		942	void
		943	min_parallel (unsigned int nthreads)
		944	PROTOTYPE: $
		945	CODE:
		946	eio_set_min_parallel (nthreads);
		947
		948	void
		949	max_parallel (unsigned int nthreads)
		950	PROTOTYPE: $
		951	CODE:
		952	eio_set_max_parallel (nthreads);
		953
		954	void
		955	max_idle (unsigned int nthreads)
		956	PROTOTYPE: $
		957	CODE:
		958	eio_set_max_idle (nthreads);
		959
		960	void
		961	idle_timeout (unsigned int seconds)
		962	PROTOTYPE: $
		963	CODE:
		964	eio_set_idle_timeout (seconds);
		965
		966	void
		967	max_outstanding (unsigned int maxreqs)
		968	PROTOTYPE: $
		969	CODE:
1227	max_outstanding = maxreqs;	970	max_outstanding = maxreqs;
1228	OUTPUT:
1229	RETVAL
1230		971
1231	void	972	void
1232	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	973	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1233	SV * pathname
1234	int flags
1235	int mode
1236	SV * callback
1237	PROTOTYPE: $$$;$
1238	PPCODE:	974	PPCODE:
1239	{	975	{
1240	dREQ;	976	dREQ;
1241		977
1242	req->type = REQ_OPEN;	978	req->type = EIO_OPEN;
1243	req->data = newSVsv (pathname);	979	req->sv1 = newSVsv (pathname);
1244	req->dataptr = SvPVbyte_nolen (req->data);	980	req->ptr1 = SvPVbyte_nolen (req->sv1);
1245	req->fd = flags;	981	req->int1 = flags;
1246	req->mode = mode;	982	req->int2 = mode;
1247		983
1248	REQ_SEND;	984	REQ_SEND;
1249	}	985	}
1250		986
1251	void	987	void
1252	aio_close (fh,callback=&PL_sv_undef)	988	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1253	SV * fh
1254	SV * callback
1255	PROTOTYPE: $;$
1256	ALIAS:	989	ALIAS:
1257	aio_close = REQ_CLOSE
1258	aio_fsync = REQ_FSYNC	990	aio_fsync = EIO_FSYNC
1259	aio_fdatasync = REQ_FDATASYNC	991	aio_fdatasync = EIO_FDATASYNC
1260	PPCODE:	992	PPCODE:
1261	{	993	{
		994	int fd = s_fileno_croak (fh, 0);
1262	dREQ;	995	dREQ;
1263		996
1264	req->type = ix;	997	req->type = ix;
1265	req->fh = newSVsv (fh);	998	req->sv1 = newSVsv (fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	999	req->int1 = fd;
1267		1000
1268	REQ_SEND (req);	1001	REQ_SEND (req);
1269	}	1002	}
1270		1003
1271	void	1004	void
		1005	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1006	PPCODE:
		1007	{
		1008	int fd = s_fileno_croak (fh, 0);
		1009	dREQ;
		1010
		1011	req->type = EIO_SYNC_FILE_RANGE;
		1012	req->sv1 = newSVsv (fh);
		1013	req->int1 = fd;
		1014	req->offs = offset;
		1015	req->size = nbytes;
		1016	req->int2 = flags;
		1017
		1018	REQ_SEND (req);
		1019	}
		1020
		1021	void
		1022	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1023	PPCODE:
		1024	{
		1025	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1026	int fd = s_fileno_croak (fh, 0);
		1027	dREQ;
		1028
		1029	if (close_pipe < 0)
		1030	{
		1031	int pipefd [2];
		1032
		1033	if (pipe (pipefd) < 0
		1034	|| close (pipefd [1]) < 0
		1035	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1036	abort (); /*D*/
		1037
		1038	close_pipe = pipefd [0];
		1039	}
		1040
		1041	req->type = EIO_DUP2;
		1042	req->int1 = close_pipe;
		1043	req->sv2 = newSVsv (fh);
		1044	req->int2 = fd;
		1045
		1046	REQ_SEND (req);
		1047	}
		1048
		1049	void
1272	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1050	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1273	SV * fh
1274	UV offset
1275	UV length
1276	SV * data
1277	UV dataoffset
1278	SV * callback
1279	ALIAS:	1051	ALIAS:
1280	aio_read = REQ_READ	1052	aio_read = EIO_READ
1281	aio_write = REQ_WRITE	1053	aio_write = EIO_WRITE
1282	PROTOTYPE: $$$$$;$
1283	PPCODE:	1054	PPCODE:
1284	{	1055	{
1285	aio_req req;
1286	STRLEN svlen;	1056	STRLEN svlen;
		1057	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1287	char *svptr = SvPVbyte (data, svlen);	1058	char *svptr = SvPVbyte (data, svlen);
1288		1059	UV len = SvUV (length);
1289	SvUPGRADE (data, SVt_PV);
1290	SvPOK_on (data);
1291		1060
1292	if (dataoffset < 0)	1061	if (dataoffset < 0)
1293	dataoffset += svlen;	1062	dataoffset += svlen;
1294		1063
1295	if (dataoffset < 0 || dataoffset > svlen)	1064	if (dataoffset < 0 || dataoffset > svlen)
1296	croak ("data offset outside of string");	1065	croak ("dataoffset outside of data scalar");
1297		1066
1298	if (ix == REQ_WRITE)	1067	if (ix == EIO_WRITE)
1299	{	1068	{
1300	/* write: check length and adjust. */	1069	/* write: check length and adjust. */
1301	if (length < 0 || length + dataoffset > svlen)	1070	if (!SvOK (length) || len + dataoffset > svlen)
1302	length = svlen - dataoffset;	1071	len = svlen - dataoffset;
1303	}	1072	}
1304	else	1073	else
1305	{	1074	{
1306	/* read: grow scalar as necessary */	1075	/* read: check type and grow scalar as necessary */
		1076	SvUPGRADE (data, SVt_PV);
1307	svptr = SvGROW (data, length + dataoffset);	1077	svptr = SvGROW (data, len + dataoffset + 1);
1308	}	1078	}
1309
1310	if (length < 0)
1311	croak ("length must not be negative");
1312		1079
1313	{	1080	{
1314	dREQ;	1081	dREQ;
1315		1082
1316	req->type = ix;	1083	req->type = ix;
1317	req->fh = newSVsv (fh);	1084	req->sv1 = newSVsv (fh);
1318	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1085	req->int1 = fd;
1319	: IoOFP (sv_2io (fh)));	1086	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320	req->offset = offset;	1087	req->size = len;
1321	req->length = length;
1322	req->data = SvREFCNT_inc (data);	1088	req->sv2 = SvREFCNT_inc (data);
1323	req->dataptr = (char *)svptr + dataoffset;	1089	req->ptr2 = (char *)svptr + dataoffset;
		1090	req->stroffset = dataoffset;
1324		1091
1325	if (!SvREADONLY (data))	1092	if (!SvREADONLY (data))
1326	{	1093	{
1327	SvREADONLY_on (data);	1094	SvREADONLY_on (data);
1328	req->data2ptr = (void *)data;	1095	req->flags |= FLAG_SV2_RO_OFF;
1329	}	1096	}
1330		1097
1331	REQ_SEND;	1098	REQ_SEND;
1332	}	1099	}
1333	}	1100	}
1334		1101
1335	void	1102	void
1336	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1103	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1337	SV * out_fh	1104	ALIAS:
1338	SV * in_fh	1105	aio_readlink = EIO_READLINK
1339	UV in_offset	1106	aio_realpath = EIO_REALPATH
1340	UV length
1341	SV * callback
1342	PROTOTYPE: $$$$;$
1343	PPCODE:	1107	PPCODE:
1344	{	1108	{
		1109	SV *data;
		1110	dREQ;
		1111
		1112	req->type = ix;
		1113	req->sv1 = newSVsv (path);
		1114	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
		1120	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1121	PPCODE:
		1122	{
		1123	int ifd = s_fileno_croak (in_fh , 0);
		1124	int ofd = s_fileno_croak (out_fh, 1);
1345	dREQ;	1125	dREQ;
1346		1126
1347	req->type = REQ_SENDFILE;	1127	req->type = EIO_SENDFILE;
1348	req->fh = newSVsv (out_fh);	1128	req->sv1 = newSVsv (out_fh);
1349	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1129	req->int1 = ofd;
1350	req->fh2 = newSVsv (in_fh);	1130	req->sv2 = newSVsv (in_fh);
1351	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1131	req->int2 = ifd;
1352	req->offset = in_offset;	1132	req->offs = in_offset;
1353	req->length = length;	1133	req->size = length;
1354		1134
1355	REQ_SEND;	1135	REQ_SEND;
1356	}	1136	}
1357		1137
1358	void	1138	void
1359	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1139	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1360	SV * fh
1361	UV offset
1362	IV length
1363	SV * callback
1364	PROTOTYPE: $$$;$
1365	PPCODE:	1140	PPCODE:
1366	{	1141	{
		1142	int fd = s_fileno_croak (fh, 0);
1367	dREQ;	1143	dREQ;
1368		1144
1369	req->type = REQ_READAHEAD;	1145	req->type = EIO_READAHEAD;
1370	req->fh = newSVsv (fh);	1146	req->sv1 = newSVsv (fh);
1371	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1147	req->int1 = fd;
1372	req->offset = offset;	1148	req->offs = offset;
1373	req->length = length;	1149	req->size = length;
1374		1150
1375	REQ_SEND;	1151	REQ_SEND;
1376	}	1152	}
1377		1153
1378	void	1154	void
1379	aio_stat (fh_or_path,callback=&PL_sv_undef)	1155	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1380	SV * fh_or_path
1381	SV * callback
1382	ALIAS:	1156	ALIAS:
1383	aio_stat = REQ_STAT	1157	aio_stat = EIO_STAT
1384	aio_lstat = REQ_LSTAT	1158	aio_lstat = EIO_LSTAT
		1159	aio_statvfs = EIO_STATVFS
1385	PPCODE:	1160	PPCODE:
1386	{	1161	{
1387	dREQ;	1162	dREQ;
1388		1163
1389	New (0, req->statdata, 1, Stat_t);	1164	req->sv1 = newSVsv (fh_or_path);
1390	if (!req->statdata)
1391	{
1392	req_free (req);
1393	croak ("out of memory during aio_req->statdata allocation");
1394	}
1395		1165
1396	if (SvPOK (fh_or_path))	1166	if (SvPOK (req->sv1))
1397	{	1167	{
1398	req->type = ix;	1168	req->type = ix;
1399	req->data = newSVsv (fh_or_path);
1400	req->dataptr = SvPVbyte_nolen (req->data);	1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	}	1170	}
1402	else	1171	else
1403	{	1172	{
1404	req->type = REQ_FSTAT;	1173	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1405	req->fh = newSVsv (fh_or_path);
1406	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1174	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1407	}	1175	}
1408		1176
1409	REQ_SEND;	1177	REQ_SEND;
1410	}	1178	}
1411		1179
		1180	UV
		1181	major (UV dev)
		1182	ALIAS:
		1183	minor = 1
		1184	CODE:
		1185	RETVAL = ix ? major (dev) : minor (dev);
		1186	OUTPUT:
		1187	RETVAL
		1188
		1189	UV
		1190	makedev (UV maj, UV min)
		1191	CODE:
		1192	RETVAL = makedev (maj, min);
		1193	OUTPUT:
		1194	RETVAL
		1195
1412	void	1196	void
		1197	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1198	PPCODE:
		1199	{
		1200	dREQ;
		1201
		1202	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1203	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1204	req->sv1 = newSVsv (fh_or_path);
		1205
		1206	if (SvPOK (req->sv1))
		1207	{
		1208	req->type = EIO_UTIME;
		1209	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1210	}
		1211	else
		1212	{
		1213	req->type = EIO_FUTIME;
		1214	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1215	}
		1216
		1217	REQ_SEND;
		1218	}
		1219
		1220	void
		1221	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1222	PPCODE:
		1223	{
		1224	dREQ;
		1225
		1226	req->sv1 = newSVsv (fh_or_path);
		1227	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1228
		1229	if (SvPOK (req->sv1))
		1230	{
		1231	req->type = EIO_TRUNCATE;
		1232	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1233	}
		1234	else
		1235	{
		1236	req->type = EIO_FTRUNCATE;
		1237	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1238	}
		1239
		1240	REQ_SEND;
		1241	}
		1242
		1243	void
		1244	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1245	ALIAS:
		1246	aio_chmod = EIO_CHMOD
		1247	aio_mkdir = EIO_MKDIR
		1248	PPCODE:
		1249	{
		1250	dREQ;
		1251
		1252	req->int2 = mode;
		1253	req->sv1 = newSVsv (fh_or_path);
		1254
		1255	if (SvPOK (req->sv1))
		1256	{
		1257	req->type = ix;
		1258	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1259	}
		1260	else
		1261	{
		1262	req->type = EIO_FCHMOD;
		1263	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1264	}
		1265
		1266	REQ_SEND;
		1267	}
		1268
		1269	void
		1270	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1271	PPCODE:
		1272	{
		1273	dREQ;
		1274
		1275	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1276	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1277	req->sv1 = newSVsv (fh_or_path);
		1278
		1279	if (SvPOK (req->sv1))
		1280	{
		1281	req->type = EIO_CHOWN;
		1282	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1283	}
		1284	else
		1285	{
		1286	req->type = EIO_FCHOWN;
		1287	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1288	}
		1289
		1290	REQ_SEND;
		1291	}
		1292
		1293	void
		1294	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1295	PPCODE:
		1296	{
		1297	dREQ;
		1298
		1299	req->type = EIO_READDIR;
		1300	req->sv1 = newSVsv (pathname);
		1301	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1302	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1303
		1304	if (flags & EIO_READDIR_DENTS)
		1305	req->int1 |= EIO_READDIR_CUSTOM2;
		1306
		1307	REQ_SEND;
		1308	}
		1309
		1310	void
1413	aio_unlink (pathname,callback=&PL_sv_undef)	1311	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414	SV * pathname
1415	SV * callback
1416	ALIAS:	1312	ALIAS:
1417	aio_unlink = REQ_UNLINK	1313	aio_unlink = EIO_UNLINK
1418	aio_rmdir = REQ_RMDIR	1314	aio_rmdir = EIO_RMDIR
1419	aio_readdir = REQ_READDIR	1315	aio_readdir = EIO_READDIR
1420	PPCODE:	1316	PPCODE:
1421	{	1317	{
1422	dREQ;	1318	dREQ;
1423		1319
1424	req->type = ix;	1320	req->type = ix;
1425	req->data = newSVsv (pathname);	1321	req->sv1 = newSVsv (pathname);
1426	req->dataptr = SvPVbyte_nolen (req->data);	1322	req->ptr1 = SvPVbyte_nolen (req->sv1);
1427		1323
1428	REQ_SEND;	1324	REQ_SEND;
1429	}	1325	}
1430		1326
1431	void	1327	void
1432	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1328	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1433	SV * oldpath
1434	SV * newpath
1435	SV * callback
1436	ALIAS:	1329	ALIAS:
1437	aio_link = REQ_LINK	1330	aio_link = EIO_LINK
1438	aio_symlink = REQ_SYMLINK	1331	aio_symlink = EIO_SYMLINK
1439	aio_rename = REQ_RENAME	1332	aio_rename = EIO_RENAME
1440	PPCODE:	1333	PPCODE:
1441	{	1334	{
1442	dREQ;	1335	dREQ;
1443		1336
1444	req->type = ix;	1337	req->type = ix;
1445	req->fh = newSVsv (oldpath);	1338	req->sv1 = newSVsv (oldpath);
1446	req->data2ptr = SvPVbyte_nolen (req->fh);	1339	req->ptr1 = SvPVbyte_nolen (req->sv1);
1447	req->data = newSVsv (newpath);	1340	req->sv2 = newSVsv (newpath);
1448	req->dataptr = SvPVbyte_nolen (req->data);	1341	req->ptr2 = SvPVbyte_nolen (req->sv2);
1449		1342
1450	REQ_SEND;	1343	REQ_SEND;
1451	}	1344	}
1452		1345
1453	void	1346	void
1454	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1347	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1455	SV * pathname
1456	SV * callback
1457	UV mode
1458	UV dev
1459	PPCODE:	1348	PPCODE:
1460	{	1349	{
1461	dREQ;	1350	dREQ;
1462		1351
1463	req->type = REQ_MKNOD;	1352	req->type = EIO_MKNOD;
1464	req->data = newSVsv (pathname);	1353	req->sv1 = newSVsv (pathname);
1465	req->dataptr = SvPVbyte_nolen (req->data);	1354	req->ptr1 = SvPVbyte_nolen (req->sv1);
1466	req->mode = (mode_t)mode;	1355	req->int2 = (mode_t)mode;
1467	req->offset = dev;	1356	req->offs = dev;
1468		1357
1469	REQ_SEND;	1358	REQ_SEND;
1470	}	1359	}
1471		1360
1472	void	1361	void
		1362	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1363	ALIAS:
		1364	aio_mtouch = EIO_MTOUCH
		1365	aio_msync = EIO_MSYNC
		1366	PPCODE:
		1367	{
		1368	STRLEN svlen;
		1369	char *svptr = SvPVbyte (data, svlen);
		1370	UV len = SvUV (length);
		1371
		1372	if (offset < 0)
		1373	offset += svlen;
		1374
		1375	if (offset < 0 || offset > svlen)
		1376	croak ("offset outside of scalar");
		1377
		1378	if (!SvOK (length) || len + offset > svlen)
		1379	len = svlen - offset;
		1380
		1381	{
		1382	dREQ;
		1383
		1384	req->type = ix;
		1385	req->sv2 = SvREFCNT_inc (data);
		1386	req->ptr2 = (char *)svptr + offset;
		1387	req->size = len;
		1388	req->int1 = flags;
		1389
		1390	REQ_SEND;
		1391	}
		1392	}
		1393
		1394	void
		1395	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1396	PPCODE:
		1397	{
		1398	STRLEN svlen;
		1399	char *svptr = SvPVbyte (data, svlen);
		1400	UV len = SvUV (length);
		1401
		1402	if (offset < 0)
		1403	offset += svlen;
		1404
		1405	if (offset < 0 || offset > svlen)
		1406	croak ("offset outside of scalar");
		1407
		1408	if (!SvOK (length) || len + offset > svlen)
		1409	len = svlen - offset;
		1410
		1411	{
		1412	dREQ;
		1413
		1414	req->type = EIO_MLOCK;
		1415	req->sv2 = SvREFCNT_inc (data);
		1416	req->ptr2 = (char *)svptr + offset;
		1417	req->size = len;
		1418
		1419	REQ_SEND;
		1420	}
		1421	}
		1422
		1423	void
		1424	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1425	PPCODE:
		1426	{
		1427	dREQ;
		1428
		1429	req->type = EIO_MLOCKALL;
		1430	req->int1 = flags;
		1431
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
1473	aio_busy (delay,callback=&PL_sv_undef)	1436	aio_busy (double delay, SV *callback=&PL_sv_undef)
1474	double delay
1475	SV * callback
1476	PPCODE:	1437	PPCODE:
1477	{	1438	{
1478	dREQ;	1439	dREQ;
1479		1440
1480	req->type = REQ_BUSY;	1441	req->type = EIO_BUSY;
1481	req->fd = delay < 0. ? 0 : delay;	1442	req->nv1 = delay < 0. ? 0. : delay;
1482	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1483		1443
1484	REQ_SEND;	1444	REQ_SEND;
1485	}	1445	}
1486		1446
1487	void	1447	void
1488	aio_group (callback=&PL_sv_undef)	1448	aio_group (SV *callback=&PL_sv_undef)
1489	SV * callback
1490	PROTOTYPE: ;$
1491	PPCODE:	1449	PPCODE:
1492	{	1450	{
1493	dREQ;	1451	dREQ;
1494		1452
1495	req->type = REQ_GROUP;	1453	req->type = EIO_GROUP;
		1454
1496	req_send (req);	1455	req_submit (req);
1497
1498	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1456	XPUSHs (req_sv (req, aio_grp_stash));
1499	}	1457	}
1500		1458
1501	void	1459	void
1502	aio_nop (callback=&PL_sv_undef)	1460	aio_nop (SV *callback=&PL_sv_undef)
1503	SV * callback	1461	ALIAS:
		1462	aio_nop = EIO_NOP
		1463	aio_sync = EIO_SYNC
1504	PPCODE:	1464	PPCODE:
1505	{	1465	{
1506	dREQ;	1466	dREQ;
1507		1467
1508	req->type = REQ_NOP;	1468	req->type = ix;
1509		1469
1510	REQ_SEND;	1470	REQ_SEND;
1511	}	1471	}
1512		1472
1513	int	1473	int
1514	aioreq_pri (int pri = 0)	1474	aioreq_pri (int pri = 0)
1515	PROTOTYPE: ;$
1516	CODE:	1475	CODE:
1517	RETVAL = next_pri - PRI_BIAS;	1476	RETVAL = next_pri;
1518	if (items > 0)	1477	if (items > 0)
1519	{	1478	{
1520	if (pri < PRI_MIN) pri = PRI_MIN;	1479	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521	if (pri > PRI_MAX) pri = PRI_MAX;	1480	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522	next_pri = pri + PRI_BIAS;	1481	next_pri = pri;
1523	}	1482	}
1524	OUTPUT:	1483	OUTPUT:
1525	RETVAL	1484	RETVAL
1526		1485
1527	void	1486	void
1528	aioreq_nice (int nice = 0)	1487	aioreq_nice (int nice = 0)
1529	CODE:	1488	CODE:
1530	nice = next_pri - nice;	1489	nice = next_pri - nice;
1531	if (nice < PRI_MIN) nice = PRI_MIN;	1490	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532	if (nice > PRI_MAX) nice = PRI_MAX;	1491	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533	next_pri = nice + PRI_BIAS;	1492	next_pri = nice;
1534		1493
1535	void	1494	void
1536	flush ()	1495	flush ()
1537	PROTOTYPE:
1538	CODE:	1496	CODE:
1539	while (nreqs)	1497	while (eio_nreqs ())
1540	{	1498	{
1541	poll_wait ();	1499	poll_wait ();
1542	poll_cb (0);	1500	poll_cb ();
1543	}	1501	}
1544		1502
1545	void
1546	poll()
1547	PROTOTYPE:
1548	CODE:
1549	if (nreqs)
1550	{
1551	poll_wait ();
1552	poll_cb (0);
1553	}
1554
1555	int	1503	int
1556	poll_fileno()	1504	poll ()
1557	PROTOTYPE:
1558	CODE:	1505	CODE:
1559	RETVAL = respipe [0];	1506	poll_wait ();
		1507	RETVAL = poll_cb ();
1560	OUTPUT:	1508	OUTPUT:
1561	RETVAL	1509	RETVAL
1562		1510
1563	int	1511	int
1564	poll_cb(...)	1512	poll_fileno ()
1565	PROTOTYPE:
1566	CODE:	1513	CODE:
1567	RETVAL = poll_cb (0);	1514	RETVAL = s_epipe_fd (&respipe);
1568	OUTPUT:	1515	OUTPUT:
1569	RETVAL	1516	RETVAL
1570		1517
1571	int	1518	int
1572	poll_some(int max = 0)	1519	poll_cb (...)
1573	PROTOTYPE: $	1520	PROTOTYPE:
1574	CODE:	1521	CODE:
1575	RETVAL = poll_cb (max);	1522	RETVAL = poll_cb ();
1576	OUTPUT:	1523	OUTPUT:
1577	RETVAL	1524	RETVAL
1578		1525
1579	void	1526	void
1580	poll_wait()	1527	poll_wait ()
1581	PROTOTYPE:
1582	CODE:	1528	CODE:
1583	if (nreqs)
1584	poll_wait ();	1529	poll_wait ();
1585		1530
1586	int	1531	int
1587	nreqs()	1532	nreqs ()
1588	PROTOTYPE:
1589	CODE:	1533	CODE:
1590	RETVAL = nreqs;	1534	RETVAL = eio_nreqs ();
1591	OUTPUT:	1535	OUTPUT:
1592	RETVAL	1536	RETVAL
1593		1537
1594	int	1538	int
1595	nready()	1539	nready ()
1596	PROTOTYPE:
1597	CODE:	1540	CODE:
1598	RETVAL = get_nready ();	1541	RETVAL = eio_nready ();
1599	OUTPUT:	1542	OUTPUT:
1600	RETVAL	1543	RETVAL
1601		1544
1602	int	1545	int
1603	npending()	1546	npending ()
1604	PROTOTYPE:
1605	CODE:	1547	CODE:
1606	RETVAL = get_npending ();	1548	RETVAL = eio_npending ();
1607	OUTPUT:	1549	OUTPUT:
1608	RETVAL	1550	RETVAL
1609		1551
		1552	int
		1553	nthreads ()
		1554	CODE:
		1555	RETVAL = eio_nthreads ();
		1556	OUTPUT:
		1557	RETVAL
		1558
		1559	int
		1560	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1561	CODE:
		1562	RETVAL = posix_fadvise (fh, offset, length, advice);
		1563	OUTPUT:
		1564	RETVAL
		1565
		1566	ssize_t
		1567	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1568	CODE:
		1569	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1570	OUTPUT:
		1571	RETVAL
		1572
		1573	void
		1574	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1575	PPCODE:
		1576	sv_unmagic (scalar, MMAP_MAGIC);
		1577	{
		1578	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1579	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1580	if (addr == (void *)-1)
		1581	XSRETURN_NO;
		1582
		1583	sv_force_normal (scalar);
		1584
		1585	/* we store the length in mg_obj, as namlen is I32 :/ */
		1586	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1587	->mg_obj = (SV *)length;
		1588
		1589	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1590
		1591	if (!(prot & PROT_WRITE))
		1592	SvREADONLY_on (scalar);
		1593
		1594	if (SvLEN (scalar))
		1595	Safefree (SvPVX (scalar));
		1596
		1597	SvPVX (scalar) = (char *)addr;
		1598	SvCUR_set (scalar, length);
		1599	SvLEN_set (scalar, 0);
		1600	SvPOK_only (scalar);
		1601
		1602	XSRETURN_YES;
		1603	}
		1604
		1605	void
		1606	munmap (SV *scalar)
		1607	CODE:
		1608	sv_unmagic (scalar, MMAP_MAGIC);
		1609
		1610	int
		1611	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1612	ALIAS:
		1613	mprotect = 1
		1614	CODE:
		1615	{
		1616	STRLEN svlen;
		1617	void *addr = SvPVbyte (scalar, svlen);
		1618	size_t len = SvUV (length);
		1619
		1620	if (offset < 0)
		1621	offset += svlen;
		1622
		1623	if (offset < 0 || offset > svlen)
		1624	croak ("offset outside of scalar");
		1625
		1626	if (!SvOK (length) || len + offset > svlen)
		1627	len = svlen - offset;
		1628
		1629	addr = (void *)(((intptr_t)addr) + offset);
		1630	eio_page_align (&addr, &len);
		1631
		1632	switch (ix)
		1633	{
		1634	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1635	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1636	}
		1637	}
		1638	OUTPUT:
		1639	RETVAL
		1640
		1641	int
		1642	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1643	CODE:
		1644	{
		1645	STRLEN svlen;
		1646	void *addr = SvPVbyte (scalar, svlen);
		1647	size_t len = SvUV (length);
		1648
		1649	if (offset < 0)
		1650	offset += svlen;
		1651
		1652	if (offset < 0 || offset > svlen)
		1653	croak ("offset outside of scalar");
		1654
		1655	if (!SvOK (length) || len + offset > svlen)
		1656	len = svlen - offset;
		1657
		1658	addr = (void *)(((intptr_t)addr) + offset);
		1659	eio_page_align (&addr, &len);
		1660	#if _POSIX_MEMLOCK_RANGE
		1661	RETVAL = munlock (addr, len);
		1662	#else
		1663	RETVAL = ((errno = ENOSYS), -1);
		1664	#endif
		1665	}
		1666	OUTPUT:
		1667	RETVAL
		1668
		1669	int
		1670	munlockall ()
		1671	CODE:
		1672	#if _POSIX_MEMLOCK
		1673	munlockall ();
		1674	#else
		1675	RETVAL = -1;
		1676	errno = ENOSYS;
		1677	#endif
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void _on_next_submit (SV *cb)
		1682	CODE:
		1683	SvREFCNT_dec (on_next_submit);
		1684	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1685
1610	PROTOTYPES: DISABLE	1686	PROTOTYPES: DISABLE
1611		1687
1612	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1688	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613		1689
1614	void	1690	void
1615	cancel (aio_req_ornot req)	1691	cancel (aio_req_ornot req)
1616	CODE:	1692	CODE:
1617	req_cancel (req);	1693	eio_cancel (req);
1618		1694
1619	void	1695	void
1620	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1696	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1621	CODE:	1697	PPCODE:
		1698	{
		1699	if (GIMME_V != G_VOID)
		1700	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1701
		1702	if (items > 1)
		1703	{
		1704	SV *cb_cv =get_cb (callback);
		1705
1622	SvREFCNT_dec (req->callback);	1706	SvREFCNT_dec (req->callback);
1623	req->callback = newSVsv (callback);	1707	req->callback = SvREFCNT_inc (cb_cv);
		1708	}
		1709	}
1624		1710
1625	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1711	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1626		1712
1627	void	1713	void
1628	add (aio_req grp, ...)	1714	add (aio_req grp, ...)
1629	PPCODE:	1715	PPCODE:
1630	{	1716	{
1631	int i;	1717	int i;
1632	aio_req req;
1633		1718
1634	if (grp->fd == 2)	1719	if (grp->int1 == 2)
1635	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1720	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1636		1721
1637	for (i = 1; i < items; ++i )	1722	for (i = 1; i < items; ++i )
1638	{	1723	{
		1724	aio_req req;
		1725
1639	if (GIMME_V != G_VOID)	1726	if (GIMME_V != G_VOID)
1640	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1727	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641		1728
1642	req = SvAIO_REQ (ST (i));	1729	req = SvAIO_REQ (ST (i));
1643		1730
1644	if (req)	1731	if (req)
1645	{	1732	eio_grp_add (grp, req);
1646	++grp->length;
1647	req->grp = grp;
1648
1649	req->grp_prev = 0;
1650	req->grp_next = grp->grp_first;
1651
1652	if (grp->grp_first)
1653	grp->grp_first->grp_prev = req;
1654
1655	grp->grp_first = req;
1656	}
1657	}	1733	}
1658	}	1734	}
1659		1735
1660	void	1736	void
1661	cancel_subs (aio_req_ornot req)	1737	cancel_subs (aio_req_ornot req)
…		…
1670	AV *av;	1746	AV *av;
1671		1747
1672	grp->errorno = errno;	1748	grp->errorno = errno;
1673		1749
1674	av = newAV ();	1750	av = newAV ();
		1751	av_extend (av, items - 1);
1675		1752
1676	for (i = 1; i < items; ++i )	1753	for (i = 1; i < items; ++i )
1677	av_push (av, newSVsv (ST (i)));	1754	av_push (av, newSVsv (ST (i)));
1678		1755
1679	SvREFCNT_dec (grp->data);	1756	SvREFCNT_dec (grp->sv1);
1680	grp->data = (SV *)av;	1757	grp->sv1 = (SV *)av;
1681	}	1758	}
1682		1759
1683	void	1760	void
1684	errno (aio_req grp, int errorno = errno)	1761	errno (aio_req grp, int errorno = errno)
1685	CODE:	1762	CODE:
1686	grp->errorno = errorno;	1763	grp->errorno = errorno;
1687		1764
1688	void	1765	void
1689	limit (aio_req grp, int limit)	1766	limit (aio_req grp, int limit)
1690	CODE:	1767	CODE:
1691	grp->fd2 = limit;	1768	eio_grp_limit (grp, limit);
1692	aio_grp_feed (grp);
1693		1769
1694	void	1770	void
1695	feed (aio_req grp, SV *callback=&PL_sv_undef)	1771	feed (aio_req grp, SV *callback=&PL_sv_undef)
1696	CODE:	1772	CODE:
1697	{	1773	{
1698	SvREFCNT_dec (grp->fh2);	1774	SvREFCNT_dec (grp->sv2);
1699	grp->fh2 = newSVsv (callback);	1775	grp->sv2 = newSVsv (callback);
		1776	grp->feed = aio_grp_feed;
1700		1777
1701	if (grp->fd2 <= 0)	1778	if (grp->int2 <= 0)
1702	grp->fd2 = 2;	1779	grp->int2 = 2;
1703		1780
1704	aio_grp_feed (grp);	1781	eio_grp_limit (grp, grp->int2);
1705	}	1782	}
1706		1783

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