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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.81 by root, Fri Oct 27 20:10:06 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 && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>	21	# include <sys/mman.h>
39	# 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
40	# include <sys/socket.h>	69	#include <sys/time.h>
41	# elif __solaris /* not yet */
42	# 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
43	# else	295	# else
44	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	297	# endif
46	#endif	298	#endif
47		299	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	300	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif
52
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
76	#endif	304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
77		314
78	/* buffer size for various temporary buffers */	315	#ifndef makedev
79	#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
80		324
81	#define dBUF \	325	#ifndef PAGESIZE
82	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
83	LOCK (wrklock); \	327	#endif
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \
86	if (!aio_buf) \
87	return -1;
88		328
89	enum {	329	enum {
90	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};	331	};
102		332
103	#define AIO_REQ_KLASS "IO::AIO::REQ"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"
105
106	typedef struct aio_cb
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;
111	SV *fh, *fh2;
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;
119	int type;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123
124	unsigned char flags;
125	unsigned char pri;
126
127	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
137		336
138	enum {	337	static SV *on_next_submit;
139	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	339	static int max_outstanding;
141		340
142	DEFAULT_PRI = 0,	341	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		342
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
297		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
298	/* must be called at most once */	358	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
300	{	360	{
301	if (!req->self)	361	if (!req->self)
302	{	362	{
303	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305	}	365	}
306		366
307	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);
308	}	374	}
309		375
310	static aio_req SvAIO_REQ (SV *sv)	376	static aio_req SvAIO_REQ (SV *sv)
311	{	377	{
312	MAGIC *mg;	378	MAGIC *mg;
313		379
314	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")))
315	croak ("object of class " AIO_REQ_KLASS " expected");	384	croak ("object of class IO::AIO::REQ expected");
316		385
317	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	386	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318		387
319	return mg ? (aio_req)mg->mg_ptr : 0;	388	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	389	}
321		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
322	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
323	{	402	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	403	if (grp->sv2 && SvOK (grp->sv2))
325	{	404	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	405	dSP;
331		406
332	ENTER;	407	ENTER;
333	SAVETMPS;	408	SAVETMPS;
334	PUSHMARK (SP);	409	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	410	XPUSHs (req_sv (grp, aio_grp_stash));
336	PUTBACK;	411	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	412	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	413	SPAGAIN;
339	FREETMPS;	414	FREETMPS;
340	LEAVE;	415	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	416	}
351	}	417	}
352		418
353	static void aio_grp_dec (aio_req grp)	419	static void req_submit (eio_req *req)
354	{	420	{
355	--grp->length;	421	eio_submit (req);
356		422
357	/* call feeder, if applicable */	423	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	424	{
363	req_invoke (grp);	425	dSP;
364	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);
365	}	433	}
366	}	434	}
367		435
368	static void req_invoke (aio_req req)	436	static int req_invoke (eio_req *req)
369	{	437	{
370	dSP;	438	if (req->flags & FLAG_SV2_RO_OFF)
		439	SvREADONLY_off (req->sv2);
371		440
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	441	if (!EIO_CANCELLED (req) && req->callback)
373	{	442	{
		443	dSP;
		444	static SV *sv_result_cache; /* caches the result integer SV */
		445	SV *sv_result;
		446
374	ENTER;	447	ENTER;
375	SAVETMPS;	448	SAVETMPS;
376	PUSHMARK (SP);	449	PUSHMARK (SP);
377	EXTEND (SP, 1);	450	EXTEND (SP, 1);
378		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
379	switch (req->type)	465	switch (req->type)
380	{	466	{
		467	case EIO_WD_OPEN:
		468	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		469	break;
		470
381	case REQ_READDIR:	471	case EIO_READDIR:
382	{	472	{
383	SV *rv = &PL_sv_undef;	473	SV *rv = &PL_sv_undef;
384		474
385	if (req->result >= 0)	475	if (req->result >= 0)
386	{	476	{
387	int i;	477	int i;
388	char *buf = req->data2ptr;	478	char *names = (char *)req->ptr2;
		479	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	480	AV *av = newAV ();
390		481
391	av_extend (av, req->result - 1);	482	av_extend (av, req->result - 1);
392		483
393	for (i = 0; i < req->result; ++i)	484	for (i = 0; i < req->result; ++i)
394	{	485	{
395	SV *sv = newSVpv (buf, 0);	486	if (req->int1 & EIO_READDIR_DENTS)
		487	{
		488	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		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
397	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);
398	buf += SvCUR (sv) + 1;	518	names += SvCUR (name) + 1;
		519	}
399	}	520	}
400		521
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	522	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	523	}
403		524
404	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))));
405	}	529	}
406	break;	530	break;
407		531
408	case REQ_OPEN:	532	case EIO_OPEN:
409	{	533	{
410	/* convert fd to fh */	534	/* convert fd to fh */
411	SV *fh;	535	SV *fh = &PL_sv_undef;
412		536
413	PUSHs (sv_2mortal (newSViv (req->result)));	537	if (req->result >= 0)
414	PUTBACK;	538	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	539	GV *gv = (GV *)sv_newmortal ();
416	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);
417		546
418	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	);
419		554
		555	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		556	fh = (SV *)gv;
		557	}
		558
420	PUSHMARK (SP);	559	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	560	}
423	break;	561	break;
424		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
425	case REQ_GROUP:	595	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	596	req->int1 = 2; /* mark group as finished */
427		597
428	if (req->data)	598	if (req->sv1)
429	{	599	{
430	int i;	600	int i;
431	AV *av = (AV *)req->data;	601	AV *av = (AV *)req->sv1;
432		602
433	EXTEND (SP, AvFILL (av) + 1);	603	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	604	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	605	PUSHs (*av_fetch (av, i, 0));
436	}	606	}
437	break;	607	break;
438		608
439	case REQ_NOP:	609	case EIO_NOP:
440	case REQ_BUSY:	610	case EIO_BUSY:
441	break;	611	break;
442		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
443	default:	644	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	645	PUSHs (sv_result);
445	break;	646	break;
446	}	647	}
447		648
448	errno = req->errorno;	649	errno = req->errorno;
449		650
450	PUTBACK;	651	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	652	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	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;
453		659
454	FREETMPS;	660	FREETMPS;
455	LEAVE;	661	LEAVE;
		662
		663	PUTBACK;
456	}	664	}
457		665
458	if (req->grp)	666	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	667	}
478		668
479	static void req_free (aio_req req)	669	static void req_destroy (aio_req req)
480	{	670	{
481	if (req->self)	671	if (req->self)
482	{	672	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	673	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	674	SvREFCNT_dec (req->self);
485	}	675	}
486		676
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	677	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	678	SvREFCNT_dec (req->sv2);
		679	SvREFCNT_dec (req->sv3);
		680	SvREFCNT_dec (req->sv4);
490	SvREFCNT_dec (req->callback);	681	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		682
496	Safefree (req);	683	Safefree (req);
497	}	684	}
498		685
499	static void req_cancel_subs (aio_req grp)	686	static void req_cancel_subs (aio_req grp)
500	{	687	{
501	aio_req sub;
502
503	if (grp->type != REQ_GROUP)	688	if (grp->type != EIO_GROUP)
504	return;	689	return;
505		690
506	SvREFCNT_dec (grp->fh2);	691	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	692	grp->sv2 = 0;
508		693
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	694	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	695	}
512		696
513	static void req_cancel (aio_req req)	697	static void create_respipe (void)
514	{	698	{
515	req->flags |= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
516		700	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	701	}
519		702
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif
538
539	sigfillset (&fullsigset);
540
541	LOCK (wrklock);
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545	{
546	wrk->prev = &wrk_first;
547	wrk->next = wrk_first.next;
548	wrk_first.next->prev = wrk;
549	wrk_first.next = wrk;
550	++started;
551	}
552	else
553	free (wrk);
554
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
556	UNLOCK (wrklock);
557	}
558
559	static void maybe_start_thread ()
560	{
561	#if 0
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif
565
566	if (started >= wanted)
567	return;
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}
592
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	703	static void poll_wait (void)
638	{	704	{
639	fd_set rfd;
640
641	while (nreqs)	705	while (eio_nreqs ())
642	{	706	{
643	int size;	707	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	708
		709	X_LOCK (reslock);
645	size = res_queue.size;	710	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	711	X_UNLOCK (reslock);
647		712
648	if (size)	713	if (size)
649	return;	714	return;
650		715
651	maybe_start_thread ();	716	etp_maybe_start_thread ();
652		717
653	FD_ZERO(&rfd);	718	s_epipe_wait (&respipe);
654	FD_SET(respipe [0], &rfd);
655
656	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	719	}
658	}	720	}
659		721
660	static int poll_cb (int max)	722	static int poll_cb (void)
661	{	723	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	724	for (;;)
668	{	725	{
669	while (max <= 0 || count < max)	726	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		727
673	LOCK (reslock);	728	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	729	croak (0);
		730
		731	if (!max_outstanding || max_outstanding > eio_nreqs ())
		732	return res;
726		733
727	poll_wait ();	734	poll_wait ();
728
729	max = 0;
730	}	735	}
731
732	return count;
733	}	736	}
734		737
735	static void create_pipe ()	738	static void ecb_cold
		739	reinit (void)
736	{	740	{
737	if (pipe (respipe))	741	create_respipe ();
738	croak ("unable to initialize result pipe");
739		742
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	743	if (eio_init (want_poll, done_poll) < 0)
741	croak ("cannot set result pipe to nonblocking mode");	744	croak ("IO::AIO: unable to initialise eio library");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}	745	}
746		746
747	/*****************************************************************************/	747	/*****************************************************************************/
748	/* work around various missing functions */
749		748
750	#if !HAVE_PREADWRITE	749	#if !_POSIX_MAPPED_FILES
751	# define pread aio_pread	750	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
752	# define pwrite aio_pwrite	751	# define munmap(addr,length) (errno = ENOSYS, -1)
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (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 = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;
854
855	#if HAVE_SENDFILE
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858
859	# elif __freebsd
860	/*
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868	if (res < 0 && sbytes)
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif	752	#endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897		753
898	if (res < 0	754	#if !_POSIX_MEMORY_PROTECTION
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	755	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
900	#if __solaris	756	# define PROT_NONE 0
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	757	# define PROT_WRITE 0
		758	# define MAP_PRIVATE 0
		759	# define MAP_SHARED 0
		760	# define MAP_FIXED 0
902	#endif	761	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908		762
909	res = 0;	763	#define MMAP_MAGIC PERL_MAGIC_ext
910		764
911	while (count)	765	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
912	{	766	{
913	ssize_t cnt;	767	int old_errno = errno;
914		768	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	769	errno = old_errno;
916		770
917	if (cnt <= 0)	771	mg->mg_obj = 0; /* just in case */
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922		772
923	cnt = write (ofd, aio_buf, cnt);	773	SvREADONLY_off (sv);
924		774
925	if (cnt <= 0)	775	if (SvPVX (sv) != mg->mg_ptr)
926	{	776	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
927	if (cnt && !res) res = -1;
928	break;
929	}
930		777
931	offset += cnt;	778	SvCUR_set (sv, 0);
932	res += cnt;	779	SvPVX (sv) = 0;
933	count -= cnt;	780	SvOK_off (sv);
934	}
935	}
936		781
937	return res;	782	return 0;
938	}	783	}
939		784
940	/* read a full directory */	785	static MGVTBL mmap_vtbl = {
941	static void scandir_ (aio_req req, worker *self)	786	0, 0, 0, 0, mmap_free
942	{	787	};
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000		788
1001	/*****************************************************************************/	789	/*****************************************************************************/
1002		790
1003	static void *aio_proc (void *thr_arg)	791	static SV * get_cb (SV *cb_sv)
1004	{	792	{
1005	aio_req req;	793	SvGETMAGIC (cb_sv);
1006	worker *self = (worker *)thr_arg;	794	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1049
1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1051	case REQ_FSYNC: req->result = fsync (req->fd); break;
1052	case REQ_READDIR: scandir_ (req, self); break;
1053
1054	case REQ_BUSY:
1055	{
1056	struct timeval tv;
1057
1058	tv.tv_sec = req->fd;
1059	tv.tv_usec = req->fd2;
1060
1061	req->result = select (0, 0, 0, 0, &tv);
1062	}
1063
1064	case REQ_GROUP:
1065	case REQ_NOP:
1066	break;
1067
1068	case REQ_QUIT:
1069	LOCK (wrklock);
1070	worker_free (self);
1071	--started;
1072	UNLOCK (wrklock);
1073	return 0;
1074
1075	default:
1076	req->result = ENOSYS;
1077	break;
1078	}
1079
1080	req->errorno = errno;
1081
1082	LOCK (reslock);
1083
1084	++npending;
1085
1086	if (!reqq_push (&res_queue, req))
1087	/* write a dummy byte to the pipe so fh becomes ready */
1088	write (respipe [1], &respipe, 1);
1089
1090	self->req = 0;
1091	worker_clear (self);
1092
1093	UNLOCK (reslock);
1094	}
1095	}
1096
1097	/*****************************************************************************/
1098
1099	static void atfork_prepare (void)
1100	{
1101	LOCK (wrklock);
1102	LOCK (reqlock);
1103	LOCK (reslock);
1104	#if !HAVE_PREADWRITE
1105	LOCK (preadwritelock);
1106	#endif
1107	#if !HAVE_READDIR_R
1108	LOCK (readdirlock);
1109	#endif
1110	}
1111
1112	static void atfork_parent (void)
1113	{
1114	#if !HAVE_READDIR_R
1115	UNLOCK (readdirlock);
1116	#endif
1117	#if !HAVE_PREADWRITE
1118	UNLOCK (preadwritelock);
1119	#endif
1120	UNLOCK (reslock);
1121	UNLOCK (reqlock);
1122	UNLOCK (wrklock);
1123	}
1124
1125	static void atfork_child (void)
1126	{
1127	aio_req prv;
1128
1129	while (prv = reqq_shift (&req_queue))
1130	req_free (prv);
1131
1132	while (prv = reqq_shift (&res_queue))
1133	req_free (prv);
1134
1135	while (wrk_first.next != &wrk_first)
1136	{
1137	worker *wrk = wrk_first.next;
1138
1139	if (wrk->req)
1140	req_free (wrk->req);
1141
1142	worker_clear (wrk);
1143	worker_free (wrk);
1144	}
1145
1146	started = 0;
1147	nreqs = 0;
1148
1149	close (respipe [0]);
1150	close (respipe [1]);
1151	create_pipe ();
1152
1153	atfork_parent ();
1154	}	795	}
1155		796
1156	#define dREQ \	797	#define dREQ \
		798	SV *cb_cv; \
1157	aio_req req; \	799	aio_req req; \
1158	int req_pri = next_pri; \	800	int req_pri = next_pri; \
1159	next_pri = DEFAULT_PRI + PRI_BIAS; \	801	next_pri = EIO_PRI_DEFAULT; \
1160	\	802	\
1161	if (SvOK (callback) && !SvROK (callback)) \	803	cb_cv = get_cb (callback); \
1162	croak ("callback must be undef or of reference type"); \
1163	\	804	\
1164	Newz (0, req, 1, aio_cb); \	805	Newz (0, req, 1, eio_req); \
1165	if (!req) \	806	if (!req) \
1166	croak ("out of memory during aio_req allocation"); \	807	croak ("out of memory during eio_req allocation"); \
1167	\	808	\
1168	req->callback = newSVsv (callback); \	809	req->callback = SvREFCNT_inc (cb_cv); \
1169	req->pri = req_pri	810	req->pri = req_pri
1170		811
1171	#define REQ_SEND \	812	#define REQ_SEND \
		813	PUTBACK; \
1172	req_send (req); \	814	req_submit (req); \
		815	SPAGAIN; \
1173	\	816	\
1174	if (GIMME_V != G_VOID) \	817	if (GIMME_V != G_VOID) \
1175	XPUSHs (req_sv (req, AIO_REQ_KLASS));	818	XPUSHs (req_sv (req, aio_req_stash));
1176		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))
		835	{
		836	*wd = SvAIO_WD (wdob);
		837	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		838	}
		839	else
		840	*wd = EIO_INVALID_WD;
		841	}
		842
		843	*pathsv = newSVsv (path);
		844	*ptr = SvPVbyte_nolen (*pathsv);
		845	}
		846
		847	static void
		848	req_set_path1 (aio_req req, SV *path)
		849	{
		850	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		851	}
		852
		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;
		857
		858	switch (SvTYPE (rv))
		859	{
		860	case SVt_PVIO:
		861	case SVt_PVLV:
		862	case SVt_PVGV:
		863	req->type = type_fh;
		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;
		872	}
		873
		874	}
		875
1177	MODULE = IO::AIO PACKAGE = IO::AIO	876	MODULE = IO::AIO PACKAGE = IO::AIO
1178		877
1179	PROTOTYPES: ENABLE	878	PROTOTYPES: ENABLE
1180		879
1181	BOOT:	880	BOOT:
1182	{	881	{
		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)
		898
		899	const_iv (O_ASYNC)
		900	const_iv (O_DIRECT)
		901	const_iv (O_NOATIME)
		902
		903	const_iv (O_CLOEXEC)
		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)
		914
		915	const_iv (S_IFIFO)
		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)
		924
		925	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		926	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		927	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		928	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		929	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		930	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		931
		932	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		933	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		934	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		935	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		936	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		937
		938	const_iv (ST_RDONLY)
		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)
		950
		951	const_iv (PROT_NONE)
		952	const_iv (PROT_EXEC)
		953	const_iv (PROT_READ)
		954	const_iv (PROT_WRITE)
		955
		956	/*const_iv (MAP_FIXED)*/
		957	const_iv (MAP_PRIVATE)
		958	const_iv (MAP_SHARED)
		959	const_iv (MAP_ANONYMOUS)
		960
		961	/* linuxish */
		962	const_iv (MAP_HUGETLB)
		963	const_iv (MAP_LOCKED)
		964	const_iv (MAP_NORESERVE)
		965	const_iv (MAP_POPULATE)
		966	const_iv (MAP_NONBLOCK)
		967
		968	const_eio (MCL_FUTURE)
		969	const_eio (MCL_CURRENT)
		970
		971	const_eio (MS_ASYNC)
		972	const_eio (MS_INVALIDATE)
		973	const_eio (MS_SYNC)
		974
		975	const_eio (MT_MODIFY)
		976
		977	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		978	const_eio (SYNC_FILE_RANGE_WRITE)
		979	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		980
		981	const_eio (FALLOC_FL_KEEP_SIZE)
		982
		983	const_eio (READDIR_DENTS)
		984	const_eio (READDIR_DIRS_FIRST)
		985	const_eio (READDIR_STAT_ORDER)
		986	const_eio (READDIR_FOUND_UNKNOWN)
		987
		988	const_eio (DT_UNKNOWN)
		989	const_eio (DT_FIFO)
		990	const_eio (DT_CHR)
		991	const_eio (DT_DIR)
		992	const_eio (DT_BLK)
		993	const_eio (DT_REG)
		994	const_eio (DT_LNK)
		995	const_eio (DT_SOCK)
		996	const_eio (DT_WHT)
		997	};
		998
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	999	aio_stash = gv_stashpv ("IO::AIO" , 1);
1184	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1000	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1185	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1001	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1186	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1002	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1187	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1188	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1189		1003
1190	create_pipe ();	1004	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1191	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1005	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1192		1006
1193	start_thread ();	1007	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1194	}
1195		1008
		1009	reinit ();
		1010	}
		1011
1196	void	1012	void
1197	min_parallel (int nthreads)	1013	reinit ()
1198	PROTOTYPE: $	1014	PROTOTYPE:
1199		1015
1200	void	1016	void
1201	max_parallel (int nthreads)	1017	max_poll_reqs (unsigned int nreqs)
1202	PROTOTYPE: $
1203
1204	int
1205	max_outstanding (int maxreqs)
1206	PROTOTYPE: $	1018	PROTOTYPE: $
1207	CODE:	1019	CODE:
1208	RETVAL = max_outstanding;	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:
1209	max_outstanding = maxreqs;	1056	max_outstanding = maxreqs;
1210	OUTPUT:
1211	RETVAL
1212		1057
1213	void	1058	void
1214	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1059	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1215	SV * pathname
1216	int flags
1217	int mode
1218	SV * callback
1219	PROTOTYPE: $$$;$
1220	PPCODE:	1060	PPCODE:
1221	{	1061	{
1222	dREQ;	1062	dREQ;
1223		1063
1224	req->type = REQ_OPEN;	1064	req->type = EIO_WD_OPEN;
1225	req->data = newSVsv (pathname);	1065	req_set_path1 (req, pathname);
1226	req->dataptr = SvPVbyte_nolen (req->data);
1227	req->fd = flags;
1228	req->mode = mode;
1229		1066
1230	REQ_SEND;	1067	REQ_SEND;
1231	}	1068	}
1232		1069
1233	void	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
1234	aio_close (fh,callback=&PL_sv_undef)	1085	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1235	SV * fh
1236	SV * callback
1237	PROTOTYPE: $;$
1238	ALIAS:	1086	ALIAS:
1239	aio_close = REQ_CLOSE
1240	aio_fsync = REQ_FSYNC	1087	aio_fsync = EIO_FSYNC
1241	aio_fdatasync = REQ_FDATASYNC	1088	aio_fdatasync = EIO_FDATASYNC
		1089	aio_syncfs = EIO_SYNCFS
1242	PPCODE:	1090	PPCODE:
1243	{	1091	{
		1092	int fd = s_fileno_croak (fh, 0);
1244	dREQ;	1093	dREQ;
1245		1094
1246	req->type = ix;	1095	req->type = ix;
1247	req->fh = newSVsv (fh);	1096	req->sv1 = newSVsv (fh);
1248	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1097	req->int1 = fd;
1249		1098
1250	REQ_SEND (req);	1099	REQ_SEND (req);
1251	}	1100	}
1252		1101
1253	void	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;
		1113	req->size = nbytes;
		1114	req->int2 = flags;
		1115
		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
		1151	#else
		1152	pipe (pipefd) < 0
		1153	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1154	#endif
		1155	|| close (pipefd [1]) < 0
		1156	)
		1157	abort (); /*D*/
		1158
		1159	close_fd = pipefd [0];
		1160	}
		1161
		1162	req->type = EIO_DUP2;
		1163	req->int1 = close_fd;
		1164	req->sv2 = newSVsv (fh);
		1165	req->int2 = fd;
		1166
		1167	REQ_SEND (req);
		1168	}
		1169
		1170	void
1254	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1171	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1255	SV * fh
1256	UV offset
1257	UV length
1258	SV * data
1259	UV dataoffset
1260	SV * callback
1261	ALIAS:	1172	ALIAS:
1262	aio_read = REQ_READ	1173	aio_read = EIO_READ
1263	aio_write = REQ_WRITE	1174	aio_write = EIO_WRITE
1264	PROTOTYPE: $$$$$;$
1265	PPCODE:	1175	PPCODE:
1266	{	1176	{
1267	aio_req req;
1268	STRLEN svlen;	1177	STRLEN svlen;
		1178	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1269	char *svptr = SvPVbyte (data, svlen);	1179	char *svptr = SvPVbyte (data, svlen);
1270		1180	UV len = SvUV (length);
1271	SvUPGRADE (data, SVt_PV);
1272	SvPOK_on (data);
1273		1181
1274	if (dataoffset < 0)	1182	if (dataoffset < 0)
1275	dataoffset += svlen;	1183	dataoffset += svlen;
1276		1184
1277	if (dataoffset < 0 || dataoffset > svlen)	1185	if (dataoffset < 0 || dataoffset > svlen)
1278	croak ("data offset outside of string");	1186	croak ("dataoffset outside of data scalar");
1279		1187
1280	if (ix == REQ_WRITE)	1188	if (ix == EIO_WRITE)
1281	{	1189	{
1282	/* write: check length and adjust. */	1190	/* write: check length and adjust. */
1283	if (length < 0 || length + dataoffset > svlen)	1191	if (!SvOK (length) || len + dataoffset > svlen)
1284	length = svlen - dataoffset;	1192	len = svlen - dataoffset;
1285	}	1193	}
1286	else	1194	else
1287	{	1195	{
1288	/* read: grow scalar as necessary */	1196	/* read: check type and grow scalar as necessary */
		1197	SvUPGRADE (data, SVt_PV);
1289	svptr = SvGROW (data, length + dataoffset);	1198	svptr = SvGROW (data, len + dataoffset + 1);
1290	}	1199	}
1291
1292	if (length < 0)
1293	croak ("length must not be negative");
1294		1200
1295	{	1201	{
1296	dREQ;	1202	dREQ;
1297		1203
1298	req->type = ix;	1204	req->type = ix;
1299	req->fh = newSVsv (fh);	1205	req->sv1 = newSVsv (fh);
1300	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1206	req->int1 = fd;
1301	: IoOFP (sv_2io (fh)));	1207	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1302	req->offset = offset;	1208	req->size = len;
1303	req->length = length;
1304	req->data = SvREFCNT_inc (data);	1209	req->sv2 = SvREFCNT_inc (data);
1305	req->dataptr = (char *)svptr + dataoffset;	1210	req->ptr2 = (char *)svptr + dataoffset;
		1211	req->stroffset = dataoffset;
1306		1212
1307	if (!SvREADONLY (data))	1213	if (!SvREADONLY (data))
1308	{	1214	{
1309	SvREADONLY_on (data);	1215	SvREADONLY_on (data);
1310	req->data2ptr = (void *)data;	1216	req->flags |= FLAG_SV2_RO_OFF;
1311	}	1217	}
1312		1218
1313	REQ_SEND;	1219	REQ_SEND;
1314	}	1220	}
1315	}	1221	}
1316		1222
1317	void	1223	void
1318	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1224	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1319	SV * out_fh	1225	ALIAS:
1320	SV * in_fh	1226	aio_readlink = EIO_READLINK
1321	UV in_offset	1227	aio_realpath = EIO_REALPATH
1322	UV length
1323	SV * callback
1324	PROTOTYPE: $$$$;$
1325	PPCODE:	1228	PPCODE:
1326	{	1229	{
		1230	dREQ;
		1231
		1232	req->type = ix;
		1233	req_set_path1 (req, pathname);
		1234
		1235	REQ_SEND;
		1236	}
		1237
		1238	void
		1239	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1240	PPCODE:
		1241	{
		1242	int ifd = s_fileno_croak (in_fh , 0);
		1243	int ofd = s_fileno_croak (out_fh, 1);
1327	dREQ;	1244	dREQ;
1328		1245
1329	req->type = REQ_SENDFILE;	1246	req->type = EIO_SENDFILE;
1330	req->fh = newSVsv (out_fh);	1247	req->sv1 = newSVsv (out_fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1248	req->int1 = ofd;
1332	req->fh2 = newSVsv (in_fh);	1249	req->sv2 = newSVsv (in_fh);
1333	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1250	req->int2 = ifd;
1334	req->offset = in_offset;	1251	req->offs = in_offset;
1335	req->length = length;	1252	req->size = length;
1336		1253
1337	REQ_SEND;	1254	REQ_SEND;
1338	}	1255	}
1339		1256
1340	void	1257	void
1341	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1258	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1342	SV * fh
1343	UV offset
1344	IV length
1345	SV * callback
1346	PROTOTYPE: $$$;$
1347	PPCODE:	1259	PPCODE:
1348	{	1260	{
		1261	int fd = s_fileno_croak (fh, 0);
1349	dREQ;	1262	dREQ;
1350		1263
1351	req->type = REQ_READAHEAD;	1264	req->type = EIO_READAHEAD;
1352	req->fh = newSVsv (fh);	1265	req->sv1 = newSVsv (fh);
1353	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1266	req->int1 = fd;
1354	req->offset = offset;	1267	req->offs = offset;
1355	req->length = length;	1268	req->size = length;
1356		1269
1357	REQ_SEND;	1270	REQ_SEND;
1358	}	1271	}
1359		1272
1360	void	1273	void
1361	aio_stat (fh_or_path,callback=&PL_sv_undef)	1274	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1362	SV * fh_or_path
1363	SV * callback
1364	ALIAS:	1275	ALIAS:
1365	aio_stat = REQ_STAT	1276	aio_stat = EIO_STAT
1366	aio_lstat = REQ_LSTAT	1277	aio_lstat = EIO_LSTAT
		1278	aio_statvfs = EIO_STATVFS
1367	PPCODE:	1279	PPCODE:
1368	{	1280	{
1369	dREQ;	1281	dREQ;
1370		1282
1371	New (0, req->statdata, 1, Stat_t);
1372	if (!req->statdata)
1373	{
1374	req_free (req);
1375	croak ("out of memory during aio_req->statdata allocation");
1376	}
1377
1378	if (SvPOK (fh_or_path))
1379	{
1380	req->type = ix;
1381	req->data = newSVsv (fh_or_path);
1382	req->dataptr = SvPVbyte_nolen (req->data);
1383	}
1384	else
1385	{
1386	req->type = REQ_FSTAT;
1387	req->fh = newSVsv (fh_or_path);	1283	req->sv1 = newSVsv (fh_or_path);
1388	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);
1389	}
1390
1391	REQ_SEND;	1285	REQ_SEND;
1392	}	1286	}
1393		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
1394	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
1395	aio_unlink (pathname,callback=&PL_sv_undef)	1375	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1396	SV * pathname
1397	SV * callback
1398	ALIAS:	1376	ALIAS:
1399	aio_unlink = REQ_UNLINK	1377	aio_unlink = EIO_UNLINK
1400	aio_rmdir = REQ_RMDIR	1378	aio_rmdir = EIO_RMDIR
1401	aio_readdir = REQ_READDIR	1379	aio_readdir = EIO_READDIR
1402	PPCODE:	1380	PPCODE:
1403	{	1381	{
1404	dREQ;	1382	dREQ;
1405		1383
1406	req->type = ix;	1384	req->type = ix;
1407	req->data = newSVsv (pathname);	1385	req_set_path1 (req, pathname);
1408	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;
1409		1405
1410	REQ_SEND;	1406	REQ_SEND;
1411	}	1407	}
1412		1408
1413	void	1409	void
1414	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1410	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1415	SV * oldpath
1416	SV * newpath
1417	SV * callback
1418	ALIAS:
1419	aio_link = REQ_LINK
1420	aio_symlink = REQ_SYMLINK
1421	aio_rename = REQ_RENAME
1422	PPCODE:	1411	PPCODE:
1423	{	1412	{
1424	dREQ;	1413	dREQ;
1425		1414
1426	req->type = ix;	1415	req->type = EIO_MKNOD;
1427	req->fh = newSVsv (oldpath);	1416	req->int2 = (mode_t)mode;
1428	req->data2ptr = SvPVbyte_nolen (req->fh);	1417	req->offs = dev;
1429	req->data = newSVsv (newpath);	1418	req_set_path1 (req, pathname);
1430	req->dataptr = SvPVbyte_nolen (req->data);
1431		1419
1432	REQ_SEND;	1420	REQ_SEND;
1433	}	1421	}
1434		1422
1435	void	1423	void
1436	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1424	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1437	SV * pathname	1425	ALIAS:
1438	SV * callback	1426	aio_mtouch = EIO_MTOUCH
1439	UV mode	1427	aio_msync = EIO_MSYNC
1440	UV dev	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
		1498	aio_busy (double delay, SV *callback=&PL_sv_undef)
1441	PPCODE:	1499	PPCODE:
1442	{	1500	{
1443	dREQ;	1501	dREQ;
1444		1502
1445	req->type = REQ_MKNOD;	1503	req->type = EIO_BUSY;
1446	req->data = newSVsv (pathname);	1504	req->nv1 = delay < 0. ? 0. : delay;
1447	req->dataptr = SvPVbyte_nolen (req->data);	1505
1448	req->mode = (mode_t)mode;
1449	req->offset = dev;
1450
1451	REQ_SEND;	1506	REQ_SEND;
1452	}	1507	}
1453		1508
1454	void	1509	void
1455	aio_busy (delay,callback=&PL_sv_undef)	1510	aio_group (SV *callback=&PL_sv_undef)
1456	double delay	1511	PPCODE:
1457	SV * callback	1512	{
		1513	dREQ;
		1514
		1515	req->type = EIO_GROUP;
		1516
		1517	req_submit (req);
		1518	XPUSHs (req_sv (req, aio_grp_stash));
		1519	}
		1520
		1521	void
		1522	aio_nop (SV *callback=&PL_sv_undef)
		1523	ALIAS:
		1524	aio_nop = EIO_NOP
		1525	aio_sync = EIO_SYNC
1458	PPCODE:	1526	PPCODE:
1459	{	1527	{
1460	dREQ;	1528	dREQ;
1461		1529
1462	req->type = REQ_BUSY;
1463	req->fd = delay < 0. ? 0 : delay;
1464	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1465
1466	REQ_SEND;
1467	}
1468
1469	void
1470	aio_group (callback=&PL_sv_undef)
1471	SV * callback
1472	PROTOTYPE: ;$
1473	PPCODE:
1474	{
1475	dREQ;
1476
1477	req->type = REQ_GROUP;
1478	req_send (req);
1479
1480	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1481	}
1482
1483	void
1484	aio_nop (callback=&PL_sv_undef)
1485	SV * callback
1486	PPCODE:
1487	{
1488	dREQ;
1489
1490	req->type = REQ_NOP;	1530	req->type = ix;
1491		1531
1492	REQ_SEND;	1532	REQ_SEND;
1493	}	1533	}
1494		1534
1495	int	1535	int
1496	aioreq_pri (int pri = 0)	1536	aioreq_pri (int pri = 0)
1497	PROTOTYPE: ;$
1498	CODE:	1537	CODE:
1499	RETVAL = next_pri - PRI_BIAS;	1538	RETVAL = next_pri;
1500	if (items > 0)	1539	if (items > 0)
1501	{	1540	{
1502	if (pri < PRI_MIN) pri = PRI_MIN;	1541	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1503	if (pri > PRI_MAX) pri = PRI_MAX;	1542	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1504	next_pri = pri + PRI_BIAS;	1543	next_pri = pri;
1505	}	1544	}
1506	OUTPUT:	1545	OUTPUT:
1507	RETVAL	1546	RETVAL
1508		1547
1509	void	1548	void
1510	aioreq_nice (int nice = 0)	1549	aioreq_nice (int nice = 0)
1511	CODE:	1550	CODE:
1512	nice = next_pri - nice;	1551	nice = next_pri - nice;
1513	if (nice < PRI_MIN) nice = PRI_MIN;	1552	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1514	if (nice > PRI_MAX) nice = PRI_MAX;	1553	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1515	next_pri = nice + PRI_BIAS;	1554	next_pri = nice;
1516		1555
1517	void	1556	void
1518	flush ()	1557	flush ()
1519	PROTOTYPE:
1520	CODE:	1558	CODE:
1521	while (nreqs)	1559	while (eio_nreqs ())
1522	{	1560	{
1523	poll_wait ();	1561	poll_wait ();
1524	poll_cb (0);	1562	poll_cb ();
1525	}	1563	}
1526		1564
1527	void
1528	poll()
1529	PROTOTYPE:
1530	CODE:
1531	if (nreqs)
1532	{
1533	poll_wait ();
1534	poll_cb (0);
1535	}
1536
1537	int	1565	int
1538	poll_fileno()	1566	poll ()
1539	PROTOTYPE:
1540	CODE:	1567	CODE:
1541	RETVAL = respipe [0];	1568	poll_wait ();
		1569	RETVAL = poll_cb ();
1542	OUTPUT:	1570	OUTPUT:
1543	RETVAL	1571	RETVAL
1544		1572
1545	int	1573	int
1546	poll_cb(...)	1574	poll_fileno ()
1547	PROTOTYPE:
1548	CODE:	1575	CODE:
1549	RETVAL = poll_cb (0);	1576	RETVAL = s_epipe_fd (&respipe);
1550	OUTPUT:	1577	OUTPUT:
1551	RETVAL	1578	RETVAL
1552		1579
1553	int	1580	int
1554	poll_some(int max = 0)	1581	poll_cb (...)
1555	PROTOTYPE: $	1582	PROTOTYPE:
1556	CODE:	1583	CODE:
1557	RETVAL = poll_cb (max);	1584	RETVAL = poll_cb ();
1558	OUTPUT:	1585	OUTPUT:
1559	RETVAL	1586	RETVAL
1560		1587
1561	void	1588	void
1562	poll_wait()	1589	poll_wait ()
1563	PROTOTYPE:
1564	CODE:	1590	CODE:
1565	if (nreqs)
1566	poll_wait ();	1591	poll_wait ();
1567		1592
1568	int	1593	int
1569	nreqs()	1594	nreqs ()
1570	PROTOTYPE:
1571	CODE:	1595	CODE:
1572	RETVAL = nreqs;	1596	RETVAL = eio_nreqs ();
1573	OUTPUT:	1597	OUTPUT:
1574	RETVAL	1598	RETVAL
1575		1599
1576	int	1600	int
1577	nready()	1601	nready ()
1578	PROTOTYPE:
1579	CODE:	1602	CODE:
1580	RETVAL = get_nready ();	1603	RETVAL = eio_nready ();
1581	OUTPUT:	1604	OUTPUT:
1582	RETVAL	1605	RETVAL
1583		1606
1584	int	1607	int
1585	npending()	1608	npending ()
1586	PROTOTYPE:
1587	CODE:	1609	CODE:
1588	RETVAL = get_npending ();	1610	RETVAL = eio_npending ();
1589	OUTPUT:	1611	OUTPUT:
1590	RETVAL	1612	RETVAL
1591		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
1592	PROTOTYPES: DISABLE	1748	PROTOTYPES: DISABLE
1593		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
1594	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1774	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1595		1775
1596	void	1776	void
1597	cancel (aio_req_ornot req)	1777	cancel (aio_req_ornot req)
1598	CODE:	1778	CODE:
1599	req_cancel (req);	1779	eio_cancel (req);
1600		1780
1601	void	1781	void
1602	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1782	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1603	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
1604	SvREFCNT_dec (req->callback);	1792	SvREFCNT_dec (req->callback);
1605	req->callback = newSVsv (callback);	1793	req->callback = SvREFCNT_inc (cb_cv);
		1794	}
		1795	}
1606		1796
1607	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1797	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1608		1798
1609	void	1799	void
1610	add (aio_req grp, ...)	1800	add (aio_req grp, ...)
1611	PPCODE:	1801	PPCODE:
1612	{	1802	{
1613	int i;	1803	int i;
1614	aio_req req;
1615		1804
1616	if (grp->fd == 2)	1805	if (grp->int1 == 2)
1617	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");
1618		1807
1619	for (i = 1; i < items; ++i )	1808	for (i = 1; i < items; ++i )
1620	{	1809	{
		1810	aio_req req;
		1811
1621	if (GIMME_V != G_VOID)	1812	if (GIMME_V != G_VOID)
1622	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1813	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1623		1814
1624	req = SvAIO_REQ (ST (i));	1815	req = SvAIO_REQ (ST (i));
1625		1816
1626	if (req)	1817	if (req)
1627	{	1818	eio_grp_add (grp, req);
1628	++grp->length;
1629	req->grp = grp;
1630
1631	req->grp_prev = 0;
1632	req->grp_next = grp->grp_first;
1633
1634	if (grp->grp_first)
1635	grp->grp_first->grp_prev = req;
1636
1637	grp->grp_first = req;
1638	}
1639	}	1819	}
1640	}	1820	}
1641		1821
1642	void	1822	void
1643	cancel_subs (aio_req_ornot req)	1823	cancel_subs (aio_req_ornot req)
…		…
1652	AV *av;	1832	AV *av;
1653		1833
1654	grp->errorno = errno;	1834	grp->errorno = errno;
1655		1835
1656	av = newAV ();	1836	av = newAV ();
		1837	av_extend (av, items - 1);
1657		1838
1658	for (i = 1; i < items; ++i )	1839	for (i = 1; i < items; ++i )
1659	av_push (av, newSVsv (ST (i)));	1840	av_push (av, newSVsv (ST (i)));
1660		1841
1661	SvREFCNT_dec (grp->data);	1842	SvREFCNT_dec (grp->sv1);
1662	grp->data = (SV *)av;	1843	grp->sv1 = (SV *)av;
1663	}	1844	}
1664		1845
1665	void	1846	void
1666	errno (aio_req grp, int errorno = errno)	1847	errno (aio_req grp, int errorno = errno)
1667	CODE:	1848	CODE:
1668	grp->errorno = errorno;	1849	grp->errorno = errorno;
1669		1850
1670	void	1851	void
1671	limit (aio_req grp, int limit)	1852	limit (aio_req grp, int limit)
1672	CODE:	1853	CODE:
1673	grp->fd2 = limit;	1854	eio_grp_limit (grp, limit);
1674	aio_grp_feed (grp);
1675		1855
1676	void	1856	void
1677	feed (aio_req grp, SV *callback=&PL_sv_undef)	1857	feed (aio_req grp, SV *callback=&PL_sv_undef)
1678	CODE:	1858	CODE:
1679	{	1859	{
1680	SvREFCNT_dec (grp->fh2);	1860	SvREFCNT_dec (grp->sv2);
1681	grp->fh2 = newSVsv (callback);	1861	grp->sv2 = newSVsv (callback);
		1862	grp->feed = aio_grp_feed;
1682		1863
1683	if (grp->fd2 <= 0)	1864	if (grp->int2 <= 0)
1684	grp->fd2 = 2;	1865	grp->int2 = 2;
1685		1866
1686	aio_grp_feed (grp);	1867	eio_grp_limit (grp, grp->int2);
1687	}	1868	}
1688		1869

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