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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 1.195 by root, Mon Sep 26 20:19:08 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !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));
308	}	368	}
309		369
310	static aio_req SvAIO_REQ (SV *sv)	370	static aio_req SvAIO_REQ (SV *sv)
311	{	371	{
312	MAGIC *mg;	372	MAGIC *mg;
313		373
314	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	374	if (!SvROK (sv)
		375	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		376	&& SvSTASH (SvRV (sv)) != aio_req_stash
		377	&& !sv_derived_from (sv, "IO::AIO::REQ")))
315	croak ("object of class " AIO_REQ_KLASS " expected");	378	croak ("object of class IO::AIO::REQ expected");
316		379
317	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	380	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318		381
319	return mg ? (aio_req)mg->mg_ptr : 0;	382	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	383	}
321		384
		385	static aio_wd SvAIO_WD (SV *sv)
		386	{
		387	if (!SvROK (sv)
		388	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		389	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		390	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		391
		392	return (aio_wd)(long)SvIVX (SvRV (sv));
		393	}
		394
322	static void aio_grp_feed (aio_req grp)	395	static void aio_grp_feed (aio_req grp)
323	{	396	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	397	if (grp->sv2 && SvOK (grp->sv2))
325	{	398	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	399	dSP;
331		400
332	ENTER;	401	ENTER;
333	SAVETMPS;	402	SAVETMPS;
334	PUSHMARK (SP);	403	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	404	XPUSHs (req_sv (grp, aio_grp_stash));
336	PUTBACK;	405	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	406	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	407	SPAGAIN;
339	FREETMPS;	408	FREETMPS;
340	LEAVE;	409	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	}	410	}
351	}	411	}
352		412
353	static void aio_grp_dec (aio_req grp)	413	static void req_submit (eio_req *req)
354	{	414	{
355	--grp->length;	415	eio_submit (req);
356		416
357	/* call feeder, if applicable */	417	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	418	{
363	req_invoke (grp);	419	dSP;
364	req_free (grp);	420	SV *cb = sv_2mortal (on_next_submit);
		421
		422	on_next_submit = 0;
		423
		424	PUSHMARK (SP);
		425	PUTBACK;
		426	call_sv (cb, G_DISCARD | G_EVAL);
365	}	427	}
366	}	428	}
367		429
368	static void req_invoke (aio_req req)	430	static int req_invoke (eio_req *req)
369	{	431	{
370	dSP;	432	if (req->flags & FLAG_SV2_RO_OFF)
		433	SvREADONLY_off (req->sv2);
371		434
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	435	if (!EIO_CANCELLED (req) && req->callback)
373	{	436	{
		437	dSP;
		438	static SV *sv_result_cache; /* caches the result integer SV */
		439	SV *sv_result;
		440
374	ENTER;	441	ENTER;
375	SAVETMPS;	442	SAVETMPS;
376	PUSHMARK (SP);	443	PUSHMARK (SP);
377	EXTEND (SP, 1);	444	EXTEND (SP, 1);
378		445
		446	/* do not recreate the result IV from scratch each time */
		447	if (expect_true (sv_result_cache))
		448	{
		449	sv_result = sv_result_cache; sv_result_cache = 0;
		450	SvIV_set (sv_result, req->result);
		451	SvIOK_only (sv_result);
		452	}
		453	else
		454	{
		455	sv_result = newSViv (req->result);
		456	SvREADONLY_on (sv_result);
		457	}
		458
379	switch (req->type)	459	switch (req->type)
380	{	460	{
		461	case EIO_WD_OPEN:
		462	PUSHs (sv_2mortal (sv_bless (newRV_noinc (newSViv (((long)req->wd))), aio_wd_stash)));
		463	break;
		464
381	case REQ_READDIR:	465	case EIO_READDIR:
382	{	466	{
383	SV *rv = &PL_sv_undef;	467	SV *rv = &PL_sv_undef;
384		468
385	if (req->result >= 0)	469	if (req->result >= 0)
386	{	470	{
387	int i;	471	int i;
388	char *buf = req->data2ptr;	472	char *names = (char *)req->ptr2;
		473	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	474	AV *av = newAV ();
390		475
391	av_extend (av, req->result - 1);	476	av_extend (av, req->result - 1);
392		477
393	for (i = 0; i < req->result; ++i)	478	for (i = 0; i < req->result; ++i)
394	{	479	{
395	SV *sv = newSVpv (buf, 0);	480	if (req->int1 & EIO_READDIR_DENTS)
		481	{
		482	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		483
		484	if (req->int1 & EIO_READDIR_CUSTOM2)
		485	{
		486	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		487	AV *avent = newAV ();
		488
		489	av_extend (avent, 2);
		490
		491	if (!sv_type [ent->type])
		492	{
		493	sv_type [ent->type] = newSViv (ent->type);
		494	SvREADONLY_on (sv_type [ent->type]);
		495	}
		496
		497	av_store (avent, 0, namesv);
		498	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		499	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		500
		501	av_store (av, i, newRV_noinc ((SV *)avent));
		502	}
		503	else
397	av_store (av, i, sv);	504	av_store (av, i, namesv);
		505
		506	++ent;
		507	}
		508	else
		509	{
		510	SV *name = newSVpv (names, 0);
		511	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	512	names += SvCUR (name) + 1;
		513	}
399	}	514	}
400		515
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	516	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	517	}
403		518
404	PUSHs (rv);	519	PUSHs (rv);
		520
		521	if (req->int1 & EIO_READDIR_CUSTOM1)
		522	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405	}	523	}
406	break;	524	break;
407		525
408	case REQ_OPEN:	526	case EIO_OPEN:
409	{	527	{
410	/* convert fd to fh */	528	/* convert fd to fh */
411	SV *fh;	529	SV *fh = &PL_sv_undef;
412		530
413	PUSHs (sv_2mortal (newSViv (req->result)));	531	if (req->result >= 0)
414	PUTBACK;	532	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	533	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	534	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		535	char sym [64];
		536	int symlen;
		537
		538	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		539	gv_init (gv, aio_stash, sym, symlen, 0);
417		540
418	fh = SvREFCNT_inc (POPs);	541	symlen = snprintf (
		542	sym,
		543	sizeof (sym),
		544	"%s&=%d",
		545	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		546	(int)req->result
		547	);
419		548
		549	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		550	fh = (SV *)gv;
		551	}
		552
420	PUSHMARK (SP);	553	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	554	}
423	break;	555	break;
424		556
		557	case EIO_STATVFS:
		558	case EIO_FSTATVFS:
		559	{
		560	SV *rv = &PL_sv_undef;
		561
		562	#ifndef _WIN32
		563	if (req->result >= 0)
		564	{
		565	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		566	HV *hv = newHV ();
		567
		568	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		569
		570	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		571	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		572	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		573	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		574	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		575	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		576	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		577	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		578	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		579	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		580	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		581	}
		582	#endif
		583
		584	PUSHs (rv);
		585	}
		586
		587	break;
		588
425	case REQ_GROUP:	589	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	590	req->int1 = 2; /* mark group as finished */
427		591
428	if (req->data)	592	if (req->sv1)
429	{	593	{
430	int i;	594	int i;
431	AV *av = (AV *)req->data;	595	AV *av = (AV *)req->sv1;
432		596
433	EXTEND (SP, AvFILL (av) + 1);	597	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	598	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	599	PUSHs (*av_fetch (av, i, 0));
436	}	600	}
437	break;	601	break;
438		602
439	case REQ_NOP:	603	case EIO_NOP:
440	case REQ_BUSY:	604	case EIO_BUSY:
441	break;	605	break;
442		606
		607	case EIO_READLINK:
		608	case EIO_REALPATH:
		609	if (req->result > 0)
		610	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		611	break;
		612
		613	case EIO_STAT:
		614	case EIO_LSTAT:
		615	case EIO_FSTAT:
		616	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		617	PL_laststatval = req->result;
		618	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		619	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		620	PUSHs (sv_result);
		621	break;
		622
		623	case EIO_READ:
		624	{
		625	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		626	*SvEND (req->sv2) = 0;
		627	SvPOK_only (req->sv2);
		628	SvSETMAGIC (req->sv2);
		629	PUSHs (sv_result);
		630	}
		631	break;
		632
		633	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		634	if (req->result > 0)
		635	SvIV_set (sv_result, 0);
		636	/* FALLTHROUGH */
		637
443	default:	638	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	639	PUSHs (sv_result);
445	break;	640	break;
446	}	641	}
447		642
448	errno = req->errorno;	643	errno = req->errorno;
449		644
450	PUTBACK;	645	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	646	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	647	SPAGAIN;
		648
		649	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		650	SvREFCNT_dec (sv_result);
		651	else
		652	sv_result_cache = sv_result;
453		653
454	FREETMPS;	654	FREETMPS;
455	LEAVE;	655	LEAVE;
		656
		657	PUTBACK;
456	}	658	}
457		659
458	if (req->grp)	660	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	}	661	}
478		662
479	static void req_free (aio_req req)	663	static void req_destroy (aio_req req)
480	{	664	{
481	if (req->self)	665	if (req->self)
482	{	666	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	667	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	668	SvREFCNT_dec (req->self);
485	}	669	}
486		670
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	671	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	672	SvREFCNT_dec (req->sv2);
		673	SvREFCNT_dec (req->sv3);
		674	SvREFCNT_dec (req->sv4);
490	SvREFCNT_dec (req->callback);	675	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		676
496	Safefree (req);	677	Safefree (req);
497	}	678	}
498		679
499	static void req_cancel_subs (aio_req grp)	680	static void req_cancel_subs (aio_req grp)
500	{	681	{
501	aio_req sub;
502
503	if (grp->type != REQ_GROUP)	682	if (grp->type != EIO_GROUP)
504	return;	683	return;
505		684
506	SvREFCNT_dec (grp->fh2);	685	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	686	grp->sv2 = 0;
508		687
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	688	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	689	}
512		690
513	static void req_cancel (aio_req req)	691	static void create_respipe (void)
514	{	692	{
515	req->flags |= FLAG_CANCELLED;	693	if (s_epipe_renew (&respipe))
516		694	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	695	}
519		696
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 ()	697	static void poll_wait (void)
638	{	698	{
639	fd_set rfd;
640
641	while (nreqs)	699	while (eio_nreqs ())
642	{	700	{
643	int size;	701	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	702
		703	X_LOCK (reslock);
645	size = res_queue.size;	704	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	705	X_UNLOCK (reslock);
647		706
648	if (size)	707	if (size)
649	return;	708	return;
650		709
651	maybe_start_thread ();	710	etp_maybe_start_thread ();
652		711
653	FD_ZERO(&rfd);	712	s_epipe_wait (&respipe);
654	FD_SET(respipe [0], &rfd);
655
656	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	713	}
658	}	714	}
659		715
660	static int poll_cb (int max)	716	static int poll_cb (void)
661	{	717	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	718	for (;;)
668	{	719	{
669	while (max <= 0 || count < max)	720	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		721
673	LOCK (reslock);	722	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;	723	croak (0);
		724
		725	if (!max_outstanding || max_outstanding > eio_nreqs ())
		726	return res;
726		727
727	poll_wait ();	728	poll_wait ();
728
729	max = 0;
730	}	729	}
731
732	return count;
733	}	730	}
734		731
735	static void create_pipe ()	732	static void ecb_cold
		733	reinit (void)
736	{	734	{
737	if (pipe (respipe))	735	create_respipe ();
738	croak ("unable to initialize result pipe");
739		736
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	737	if (eio_init (want_poll, done_poll) < 0)
741	croak ("cannot set result pipe to nonblocking mode");	738	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	}	739	}
746		740
747	/*****************************************************************************/	741	/*****************************************************************************/
748	/* work around various missing functions */
749		742
750	#if !HAVE_PREADWRITE	743	#if !_POSIX_MAPPED_FILES
751	# define pread aio_pread	744	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
752	# define pwrite aio_pwrite	745	# 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	746	#endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897		747
898	if (res < 0	748	#if !_POSIX_MEMORY_PROTECTION
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	749	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
900	#if __solaris	750	# define PROT_NONE 0
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	751	# define PROT_WRITE 0
		752	# define MAP_PRIVATE 0
		753	# define MAP_SHARED 0
		754	# define MAP_FIXED 0
902	#endif	755	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908		756
909	res = 0;	757	#define MMAP_MAGIC PERL_MAGIC_ext
910		758
911	while (count)	759	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
912	{	760	{
913	ssize_t cnt;	761	int old_errno = errno;
914		762	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	763	errno = old_errno;
916		764
917	if (cnt <= 0)	765	mg->mg_obj = 0; /* just in case */
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922		766
923	cnt = write (ofd, aio_buf, cnt);	767	SvREADONLY_off (sv);
924		768
925	if (cnt <= 0)	769	if (SvPVX (sv) != mg->mg_ptr)
926	{	770	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
927	if (cnt && !res) res = -1;
928	break;
929	}
930		771
931	offset += cnt;	772	SvCUR_set (sv, 0);
932	res += cnt;	773	SvPVX (sv) = 0;
933	count -= cnt;	774	SvOK_off (sv);
934	}
935	}
936		775
937	return res;	776	return 0;
938	}	777	}
939		778
940	/* read a full directory */	779	static MGVTBL mmap_vtbl = {
941	static void scandir_ (aio_req req, worker *self)	780	0, 0, 0, 0, mmap_free
942	{	781	};
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		782
1001	/*****************************************************************************/	783	/*****************************************************************************/
1002		784
1003	static void *aio_proc (void *thr_arg)	785	static SV * get_cb (SV *cb_sv)
1004	{	786	{
1005	aio_req req;	787	SvGETMAGIC (cb_sv);
1006	worker *self = (worker *)thr_arg;	788	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	}	789	}
1155		790
1156	#define dREQ \	791	#define dREQ \
		792	SV *cb_cv; \
1157	aio_req req; \	793	aio_req req; \
1158	int req_pri = next_pri; \	794	int req_pri = next_pri; \
1159	next_pri = DEFAULT_PRI + PRI_BIAS; \	795	next_pri = EIO_PRI_DEFAULT; \
1160	\	796	\
1161	if (SvOK (callback) && !SvROK (callback)) \	797	cb_cv = get_cb (callback); \
1162	croak ("callback must be undef or of reference type"); \
1163	\	798	\
1164	Newz (0, req, 1, aio_cb); \	799	Newz (0, req, 1, eio_req); \
1165	if (!req) \	800	if (!req) \
1166	croak ("out of memory during aio_req allocation"); \	801	croak ("out of memory during eio_req allocation"); \
1167	\	802	\
1168	req->callback = newSVsv (callback); \	803	req->callback = SvREFCNT_inc (cb_cv); \
1169	req->pri = req_pri	804	req->pri = req_pri
1170		805
1171	#define REQ_SEND \	806	#define REQ_SEND \
		807	PUTBACK; \
1172	req_send (req); \	808	req_submit (req); \
		809	SPAGAIN; \
1173	\	810	\
1174	if (GIMME_V != G_VOID) \	811	if (GIMME_V != G_VOID) \
1175	XPUSHs (req_sv (req, AIO_REQ_KLASS));	812	XPUSHs (req_sv (req, aio_req_stash));
1176		813
		814	static void
		815	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		816	{
		817	if (SvROK (path))
		818	{
		819	AV *av = (AV *)SvRV (path);
		820	SV *wdob;
		821
		822	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		823	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		824
		825	path = AvARRAY (av)[1];
		826	wdob = AvARRAY (av)[0];
		827
		828	*wd = SvAIO_WD (wdob);
		829	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		830	}
		831
		832	*pathsv = newSVsv (path);
		833	*ptr = SvPVbyte_nolen (*pathsv);
		834	}
		835
		836	static void
		837	req_set_path1 (aio_req req, SV *path)
		838	{
		839	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		840	}
		841
		842	static void
		843	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		844	{
		845	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		846
		847	switch (SvTYPE (rv))
		848	{
		849	case SVt_PVIO:
		850	case SVt_PVLV:
		851	case SVt_PVGV:
		852	req->type = type_fh;
		853	req->sv1 = newSVsv (fh_or_path);
		854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		855	break;
		856
		857	default:
		858	req->type = type_path;
		859	req_set_path1 (req, fh_or_path);
		860	break;
		861	}
		862
		863	}
		864
1177	MODULE = IO::AIO PACKAGE = IO::AIO	865	MODULE = IO::AIO PACKAGE = IO::AIO
1178		866
1179	PROTOTYPES: ENABLE	867	PROTOTYPES: ENABLE
1180		868
1181	BOOT:	869	BOOT:
1182	{	870	{
		871	static const struct {
		872	const char *name;
		873	IV iv;
		874	} *civ, const_iv[] = {
		875	# define const_niv(name, value) { # name, (IV) value },
		876	# define const_iv(name) { # name, (IV) name },
		877	# define const_eio(name) { # name, (IV) EIO_ ## name },
		878	const_iv (EXDEV)
		879	const_iv (ENOSYS)
		880	const_iv (O_RDONLY)
		881	const_iv (O_WRONLY)
		882	const_iv (O_RDWR)
		883	const_iv (O_CREAT)
		884	const_iv (O_TRUNC)
		885	const_iv (O_EXCL)
		886	const_iv (O_APPEND)
		887
		888	const_iv (O_ASYNC)
		889	const_iv (O_DIRECT)
		890	const_iv (O_NOATIME)
		891
		892	const_iv (O_CLOEXEC)
		893	const_iv (O_NOCTTY)
		894	const_iv (O_NOFOLLOW)
		895	const_iv (O_NONBLOCK)
		896	const_iv (O_EXEC)
		897	const_iv (O_SEARCH)
		898	const_iv (O_DIRECTORY)
		899	const_iv (O_DSYNC)
		900	const_iv (O_RSYNC)
		901	const_iv (O_SYNC)
		902	const_iv (O_TTY_INIT)
		903
		904	const_iv (S_IFIFO)
		905	const_iv (S_IFCHR)
		906	const_iv (S_IFBLK)
		907	const_iv (S_IFLNK)
		908	const_iv (S_IFREG)
		909	const_iv (S_IFDIR)
		910	const_iv (S_IFWHT)
		911	const_iv (S_IFSOCK)
		912	const_iv (S_IFMT)
		913
		914	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		915	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		916	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		917	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		918	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		919	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		920
		921	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		922	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		923	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		924	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		925	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		926
		927	const_iv (ST_RDONLY)
		928	const_iv (ST_NOSUID)
		929	const_iv (ST_NODEV)
		930	const_iv (ST_NOEXEC)
		931	const_iv (ST_SYNCHRONOUS)
		932	const_iv (ST_MANDLOCK)
		933	const_iv (ST_WRITE)
		934	const_iv (ST_APPEND)
		935	const_iv (ST_IMMUTABLE)
		936	const_iv (ST_NOATIME)
		937	const_iv (ST_NODIRATIME)
		938	const_iv (ST_RELATIME)
		939
		940	const_iv (PROT_NONE)
		941	const_iv (PROT_EXEC)
		942	const_iv (PROT_READ)
		943	const_iv (PROT_WRITE)
		944
		945	/*const_iv (MAP_FIXED)*/
		946	const_iv (MAP_PRIVATE)
		947	const_iv (MAP_SHARED)
		948	const_iv (MAP_ANONYMOUS)
		949
		950	/* linuxish */
		951	const_iv (MAP_HUGETLB)
		952	const_iv (MAP_LOCKED)
		953	const_iv (MAP_NORESERVE)
		954	const_iv (MAP_POPULATE)
		955	const_iv (MAP_NONBLOCK)
		956
		957	const_eio (MCL_FUTURE)
		958	const_eio (MCL_CURRENT)
		959
		960	const_eio (MS_ASYNC)
		961	const_eio (MS_INVALIDATE)
		962	const_eio (MS_SYNC)
		963
		964	const_eio (MT_MODIFY)
		965
		966	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		967	const_eio (SYNC_FILE_RANGE_WRITE)
		968	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		969
		970	const_eio (FALLOC_FL_KEEP_SIZE)
		971
		972	const_eio (READDIR_DENTS)
		973	const_eio (READDIR_DIRS_FIRST)
		974	const_eio (READDIR_STAT_ORDER)
		975	const_eio (READDIR_FOUND_UNKNOWN)
		976
		977	const_eio (DT_UNKNOWN)
		978	const_eio (DT_FIFO)
		979	const_eio (DT_CHR)
		980	const_eio (DT_DIR)
		981	const_eio (DT_BLK)
		982	const_eio (DT_REG)
		983	const_eio (DT_LNK)
		984	const_eio (DT_SOCK)
		985	const_eio (DT_WHT)
		986	};
		987
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	988	aio_stash = gv_stashpv ("IO::AIO" , 1);
1184	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	989	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1185	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	990	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1186	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	991	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		992
1190	create_pipe ();	993	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1191	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	994	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1192		995
1193	start_thread ();	996	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1194	}
1195		997
		998	reinit ();
		999	}
		1000
1196	void	1001	void
1197	min_parallel (int nthreads)	1002	reinit ()
1198	PROTOTYPE: $	1003	PROTOTYPE:
1199		1004
1200	void	1005	void
1201	max_parallel (int nthreads)	1006	max_poll_reqs (unsigned int nreqs)
1202	PROTOTYPE: $
1203
1204	int
1205	max_outstanding (int maxreqs)
1206	PROTOTYPE: $	1007	PROTOTYPE: $
1207	CODE:	1008	CODE:
1208	RETVAL = max_outstanding;	1009	eio_set_max_poll_reqs (nreqs);
		1010
		1011	void
		1012	max_poll_time (double nseconds)
		1013	PROTOTYPE: $
		1014	CODE:
		1015	eio_set_max_poll_time (nseconds);
		1016
		1017	void
		1018	min_parallel (unsigned int nthreads)
		1019	PROTOTYPE: $
		1020	CODE:
		1021	eio_set_min_parallel (nthreads);
		1022
		1023	void
		1024	max_parallel (unsigned int nthreads)
		1025	PROTOTYPE: $
		1026	CODE:
		1027	eio_set_max_parallel (nthreads);
		1028
		1029	void
		1030	max_idle (unsigned int nthreads)
		1031	PROTOTYPE: $
		1032	CODE:
		1033	eio_set_max_idle (nthreads);
		1034
		1035	void
		1036	idle_timeout (unsigned int seconds)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_idle_timeout (seconds);
		1040
		1041	void
		1042	max_outstanding (unsigned int maxreqs)
		1043	PROTOTYPE: $
		1044	CODE:
1209	max_outstanding = maxreqs;	1045	max_outstanding = maxreqs;
1210	OUTPUT:
1211	RETVAL
1212		1046
1213	void	1047	void
1214	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1048	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:	1049	PPCODE:
1221	{	1050	{
1222	dREQ;	1051	dREQ;
1223		1052
1224	req->type = REQ_OPEN;	1053	req->type = EIO_WD_OPEN;
1225	req->data = newSVsv (pathname);	1054	req_set_path1 (req, pathname);
1226	req->dataptr = SvPVbyte_nolen (req->data);
1227	req->fd = flags;
1228	req->mode = mode;
1229		1055
1230	REQ_SEND;	1056	REQ_SEND;
1231	}	1057	}
1232		1058
1233	void	1059	void
		1060	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1061	PPCODE:
		1062	{
		1063	dREQ;
		1064
		1065	req->type = EIO_OPEN;
		1066	req_set_path1 (req, pathname);
		1067	req->int1 = flags;
		1068	req->int2 = mode;
		1069
		1070	REQ_SEND;
		1071	}
		1072
		1073	void
1234	aio_close (fh,callback=&PL_sv_undef)	1074	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1235	SV * fh
1236	SV * callback
1237	PROTOTYPE: $;$
1238	ALIAS:	1075	ALIAS:
1239	aio_close = REQ_CLOSE
1240	aio_fsync = REQ_FSYNC	1076	aio_fsync = EIO_FSYNC
1241	aio_fdatasync = REQ_FDATASYNC	1077	aio_fdatasync = EIO_FDATASYNC
		1078	aio_syncfs = EIO_SYNCFS
1242	PPCODE:	1079	PPCODE:
1243	{	1080	{
		1081	int fd = s_fileno_croak (fh, 0);
1244	dREQ;	1082	dREQ;
1245		1083
1246	req->type = ix;	1084	req->type = ix;
1247	req->fh = newSVsv (fh);	1085	req->sv1 = newSVsv (fh);
1248	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1086	req->int1 = fd;
1249		1087
1250	REQ_SEND (req);	1088	REQ_SEND (req);
1251	}	1089	}
1252		1090
1253	void	1091	void
		1092	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1093	PPCODE:
		1094	{
		1095	int fd = s_fileno_croak (fh, 0);
		1096	dREQ;
		1097
		1098	req->type = EIO_SYNC_FILE_RANGE;
		1099	req->sv1 = newSVsv (fh);
		1100	req->int1 = fd;
		1101	req->offs = offset;
		1102	req->size = nbytes;
		1103	req->int2 = flags;
		1104
		1105	REQ_SEND (req);
		1106	}
		1107
		1108	void
		1109	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_FALLOCATE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->int2 = mode;
		1119	req->offs = offset;
		1120	req->size = len;
		1121
		1122	REQ_SEND (req);
		1123	}
		1124
		1125	void
		1126	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1130	int fd = s_fileno_croak (fh, 0);
		1131	dREQ;
		1132
		1133	if (expect_false (close_fd < 0))
		1134	{
		1135	int pipefd [2];
		1136
		1137	if (
		1138	#ifdef _WIN32
		1139	_pipe (pipefd, 1, _O_BINARY) < 0
		1140	#else
		1141	pipe (pipefd) < 0
		1142	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1143	#endif
		1144	|| close (pipefd [1]) < 0
		1145	)
		1146	abort (); /*D*/
		1147
		1148	close_fd = pipefd [0];
		1149	}
		1150
		1151	req->type = EIO_DUP2;
		1152	req->int1 = close_fd;
		1153	req->sv2 = newSVsv (fh);
		1154	req->int2 = fd;
		1155
		1156	REQ_SEND (req);
		1157	}
		1158
		1159	void
1254	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1160	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1255	SV * fh
1256	UV offset
1257	UV length
1258	SV * data
1259	UV dataoffset
1260	SV * callback
1261	ALIAS:	1161	ALIAS:
1262	aio_read = REQ_READ	1162	aio_read = EIO_READ
1263	aio_write = REQ_WRITE	1163	aio_write = EIO_WRITE
1264	PROTOTYPE: $$$$$;$
1265	PPCODE:	1164	PPCODE:
1266	{	1165	{
1267	aio_req req;
1268	STRLEN svlen;	1166	STRLEN svlen;
		1167	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1269	char *svptr = SvPVbyte (data, svlen);	1168	char *svptr = SvPVbyte (data, svlen);
1270		1169	UV len = SvUV (length);
1271	SvUPGRADE (data, SVt_PV);
1272	SvPOK_on (data);
1273		1170
1274	if (dataoffset < 0)	1171	if (dataoffset < 0)
1275	dataoffset += svlen;	1172	dataoffset += svlen;
1276		1173
1277	if (dataoffset < 0 || dataoffset > svlen)	1174	if (dataoffset < 0 || dataoffset > svlen)
1278	croak ("data offset outside of string");	1175	croak ("dataoffset outside of data scalar");
1279		1176
1280	if (ix == REQ_WRITE)	1177	if (ix == EIO_WRITE)
1281	{	1178	{
1282	/* write: check length and adjust. */	1179	/* write: check length and adjust. */
1283	if (length < 0 || length + dataoffset > svlen)	1180	if (!SvOK (length) || len + dataoffset > svlen)
1284	length = svlen - dataoffset;	1181	len = svlen - dataoffset;
1285	}	1182	}
1286	else	1183	else
1287	{	1184	{
1288	/* read: grow scalar as necessary */	1185	/* read: check type and grow scalar as necessary */
		1186	SvUPGRADE (data, SVt_PV);
1289	svptr = SvGROW (data, length + dataoffset);	1187	svptr = SvGROW (data, len + dataoffset + 1);
1290	}	1188	}
1291
1292	if (length < 0)
1293	croak ("length must not be negative");
1294		1189
1295	{	1190	{
1296	dREQ;	1191	dREQ;
1297		1192
1298	req->type = ix;	1193	req->type = ix;
1299	req->fh = newSVsv (fh);	1194	req->sv1 = newSVsv (fh);
1300	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1195	req->int1 = fd;
1301	: IoOFP (sv_2io (fh)));	1196	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1302	req->offset = offset;	1197	req->size = len;
1303	req->length = length;
1304	req->data = SvREFCNT_inc (data);	1198	req->sv2 = SvREFCNT_inc (data);
1305	req->dataptr = (char *)svptr + dataoffset;	1199	req->ptr2 = (char *)svptr + dataoffset;
		1200	req->stroffset = dataoffset;
1306		1201
1307	if (!SvREADONLY (data))	1202	if (!SvREADONLY (data))
1308	{	1203	{
1309	SvREADONLY_on (data);	1204	SvREADONLY_on (data);
1310	req->data2ptr = (void *)data;	1205	req->flags |= FLAG_SV2_RO_OFF;
1311	}	1206	}
1312		1207
1313	REQ_SEND;	1208	REQ_SEND;
1314	}	1209	}
1315	}	1210	}
1316		1211
1317	void	1212	void
1318	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1213	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1319	SV * out_fh	1214	ALIAS:
1320	SV * in_fh	1215	aio_readlink = EIO_READLINK
1321	UV in_offset	1216	aio_realpath = EIO_REALPATH
1322	UV length
1323	SV * callback
1324	PROTOTYPE: $$$$;$
1325	PPCODE:	1217	PPCODE:
1326	{	1218	{
		1219	dREQ;
		1220
		1221	req->type = ix;
		1222	req_set_path1 (req, pathname);
		1223
		1224	REQ_SEND;
		1225	}
		1226
		1227	void
		1228	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1229	PPCODE:
		1230	{
		1231	int ifd = s_fileno_croak (in_fh , 0);
		1232	int ofd = s_fileno_croak (out_fh, 1);
1327	dREQ;	1233	dREQ;
1328		1234
1329	req->type = REQ_SENDFILE;	1235	req->type = EIO_SENDFILE;
1330	req->fh = newSVsv (out_fh);	1236	req->sv1 = newSVsv (out_fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1237	req->int1 = ofd;
1332	req->fh2 = newSVsv (in_fh);	1238	req->sv2 = newSVsv (in_fh);
1333	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1239	req->int2 = ifd;
1334	req->offset = in_offset;	1240	req->offs = in_offset;
1335	req->length = length;	1241	req->size = length;
1336		1242
1337	REQ_SEND;	1243	REQ_SEND;
1338	}	1244	}
1339		1245
1340	void	1246	void
1341	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1247	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1342	SV * fh
1343	UV offset
1344	IV length
1345	SV * callback
1346	PROTOTYPE: $$$;$
1347	PPCODE:	1248	PPCODE:
1348	{	1249	{
		1250	int fd = s_fileno_croak (fh, 0);
1349	dREQ;	1251	dREQ;
1350		1252
1351	req->type = REQ_READAHEAD;	1253	req->type = EIO_READAHEAD;
1352	req->fh = newSVsv (fh);	1254	req->sv1 = newSVsv (fh);
1353	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1255	req->int1 = fd;
1354	req->offset = offset;	1256	req->offs = offset;
1355	req->length = length;	1257	req->size = length;
1356		1258
1357	REQ_SEND;	1259	REQ_SEND;
1358	}	1260	}
1359		1261
1360	void	1262	void
1361	aio_stat (fh_or_path,callback=&PL_sv_undef)	1263	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1362	SV * fh_or_path
1363	SV * callback
1364	ALIAS:	1264	ALIAS:
1365	aio_stat = REQ_STAT	1265	aio_stat = EIO_STAT
1366	aio_lstat = REQ_LSTAT	1266	aio_lstat = EIO_LSTAT
		1267	aio_statvfs = EIO_STATVFS
1367	PPCODE:	1268	PPCODE:
1368	{	1269	{
1369	dREQ;	1270	dREQ;
1370		1271
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);	1272	req->sv1 = newSVsv (fh_or_path);
1388	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1273	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1389	}
1390
1391	REQ_SEND;	1274	REQ_SEND;
1392	}	1275	}
1393		1276
		1277	UV
		1278	major (UV dev)
		1279	ALIAS:
		1280	minor = 1
		1281	CODE:
		1282	RETVAL = ix ? major (dev) : minor (dev);
		1283	OUTPUT:
		1284	RETVAL
		1285
		1286	UV
		1287	makedev (UV maj, UV min)
		1288	CODE:
		1289	RETVAL = makedev (maj, min);
		1290	OUTPUT:
		1291	RETVAL
		1292
1394	void	1293	void
		1294	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1295	PPCODE:
		1296	{
		1297	dREQ;
		1298
		1299	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1300	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1301	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1302
		1303	REQ_SEND;
		1304	}
		1305
		1306	void
		1307	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	dREQ;
		1311
		1312	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1313	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
		1319	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1320	ALIAS:
		1321	aio_chmod = EIO_CHMOD
		1322	aio_mkdir = EIO_MKDIR
		1323	PPCODE:
		1324	{
		1325	dREQ;
		1326
		1327	req->int2 = mode;
		1328	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1329
		1330	REQ_SEND;
		1331	}
		1332
		1333	void
		1334	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1335	PPCODE:
		1336	{
		1337	dREQ;
		1338
		1339	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1340	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1341	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1342
		1343	REQ_SEND;
		1344	}
		1345
		1346	void
		1347	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1348	PPCODE:
		1349	{
		1350	dREQ;
		1351
		1352	req->type = EIO_READDIR;
		1353	req->sv1 = newSVsv (pathname);
		1354	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1355	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1356
		1357	if (flags & EIO_READDIR_DENTS)
		1358	req->int1 |= EIO_READDIR_CUSTOM2;
		1359
		1360	REQ_SEND;
		1361	}
		1362
		1363	void
1395	aio_unlink (pathname,callback=&PL_sv_undef)	1364	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1396	SV * pathname
1397	SV * callback
1398	ALIAS:	1365	ALIAS:
1399	aio_unlink = REQ_UNLINK	1366	aio_unlink = EIO_UNLINK
1400	aio_rmdir = REQ_RMDIR	1367	aio_rmdir = EIO_RMDIR
1401	aio_readdir = REQ_READDIR	1368	aio_readdir = EIO_READDIR
1402	PPCODE:	1369	PPCODE:
1403	{	1370	{
1404	dREQ;	1371	dREQ;
1405		1372
1406	req->type = ix;	1373	req->type = ix;
1407	req->data = newSVsv (pathname);	1374	req_set_path1 (req, pathname);
1408	req->dataptr = SvPVbyte_nolen (req->data);	1375
		1376	REQ_SEND;
		1377	}
		1378
		1379	void
		1380	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1381	ALIAS:
		1382	aio_link = EIO_LINK
		1383	aio_symlink = EIO_SYMLINK
		1384	aio_rename = EIO_RENAME
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388	eio_wd wd2;
		1389
		1390	req->type = ix;
		1391	req_set_path1 (req, oldpath);
		1392	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1393	req->int3 = (long)wd2;
1409		1394
1410	REQ_SEND;	1395	REQ_SEND;
1411	}	1396	}
1412		1397
1413	void	1398	void
1414	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1399	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:	1400	PPCODE:
1423	{	1401	{
1424	dREQ;	1402	dREQ;
1425		1403
1426	req->type = ix;	1404	req->type = EIO_MKNOD;
1427	req->fh = newSVsv (oldpath);	1405	req->int2 = (mode_t)mode;
1428	req->data2ptr = SvPVbyte_nolen (req->fh);	1406	req->offs = dev;
1429	req->data = newSVsv (newpath);	1407	req_set_path1 (req, pathname);
1430	req->dataptr = SvPVbyte_nolen (req->data);
1431		1408
1432	REQ_SEND;	1409	REQ_SEND;
1433	}	1410	}
1434		1411
1435	void	1412	void
1436	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1413	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1437	SV * pathname	1414	ALIAS:
1438	SV * callback	1415	aio_mtouch = EIO_MTOUCH
1439	UV mode	1416	aio_msync = EIO_MSYNC
1440	UV dev	1417	PPCODE:
		1418	{
		1419	STRLEN svlen;
		1420	char *svptr = SvPVbyte (data, svlen);
		1421	UV len = SvUV (length);
		1422
		1423	if (offset < 0)
		1424	offset += svlen;
		1425
		1426	if (offset < 0 || offset > svlen)
		1427	croak ("offset outside of scalar");
		1428
		1429	if (!SvOK (length) || len + offset > svlen)
		1430	len = svlen - offset;
		1431
		1432	{
		1433	dREQ;
		1434
		1435	req->type = ix;
		1436	req->sv2 = SvREFCNT_inc (data);
		1437	req->ptr2 = (char *)svptr + offset;
		1438	req->size = len;
		1439	req->int1 = flags;
		1440
		1441	REQ_SEND;
		1442	}
		1443	}
		1444
		1445	void
		1446	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1447	PPCODE:
		1448	{
		1449	STRLEN svlen;
		1450	char *svptr = SvPVbyte (data, svlen);
		1451	UV len = SvUV (length);
		1452
		1453	if (offset < 0)
		1454	offset += svlen;
		1455
		1456	if (offset < 0 || offset > svlen)
		1457	croak ("offset outside of scalar");
		1458
		1459	if (!SvOK (length) || len + offset > svlen)
		1460	len = svlen - offset;
		1461
		1462	{
		1463	dREQ;
		1464
		1465	req->type = EIO_MLOCK;
		1466	req->sv2 = SvREFCNT_inc (data);
		1467	req->ptr2 = (char *)svptr + offset;
		1468	req->size = len;
		1469
		1470	REQ_SEND;
		1471	}
		1472	}
		1473
		1474	void
		1475	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1476	PPCODE:
		1477	{
		1478	dREQ;
		1479
		1480	req->type = EIO_MLOCKALL;
		1481	req->int1 = flags;
		1482
		1483	REQ_SEND;
		1484	}
		1485
		1486	void
		1487	aio_busy (double delay, SV *callback=&PL_sv_undef)
1441	PPCODE:	1488	PPCODE:
1442	{	1489	{
1443	dREQ;	1490	dREQ;
1444		1491
1445	req->type = REQ_MKNOD;	1492	req->type = EIO_BUSY;
1446	req->data = newSVsv (pathname);	1493	req->nv1 = delay < 0. ? 0. : delay;
1447	req->dataptr = SvPVbyte_nolen (req->data);	1494
1448	req->mode = (mode_t)mode;
1449	req->offset = dev;
1450
1451	REQ_SEND;	1495	REQ_SEND;
1452	}	1496	}
1453		1497
1454	void	1498	void
1455	aio_busy (delay,callback=&PL_sv_undef)	1499	aio_group (SV *callback=&PL_sv_undef)
1456	double delay	1500	PPCODE:
1457	SV * callback	1501	{
		1502	dREQ;
		1503
		1504	req->type = EIO_GROUP;
		1505
		1506	req_submit (req);
		1507	XPUSHs (req_sv (req, aio_grp_stash));
		1508	}
		1509
		1510	void
		1511	aio_nop (SV *callback=&PL_sv_undef)
		1512	ALIAS:
		1513	aio_nop = EIO_NOP
		1514	aio_sync = EIO_SYNC
1458	PPCODE:	1515	PPCODE:
1459	{	1516	{
1460	dREQ;	1517	dREQ;
1461		1518
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;	1519	req->type = ix;
1491		1520
1492	REQ_SEND;	1521	REQ_SEND;
1493	}	1522	}
1494		1523
1495	int	1524	int
1496	aioreq_pri (int pri = 0)	1525	aioreq_pri (int pri = 0)
1497	PROTOTYPE: ;$
1498	CODE:	1526	CODE:
1499	RETVAL = next_pri - PRI_BIAS;	1527	RETVAL = next_pri;
1500	if (items > 0)	1528	if (items > 0)
1501	{	1529	{
1502	if (pri < PRI_MIN) pri = PRI_MIN;	1530	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1503	if (pri > PRI_MAX) pri = PRI_MAX;	1531	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1504	next_pri = pri + PRI_BIAS;	1532	next_pri = pri;
1505	}	1533	}
1506	OUTPUT:	1534	OUTPUT:
1507	RETVAL	1535	RETVAL
1508		1536
1509	void	1537	void
1510	aioreq_nice (int nice = 0)	1538	aioreq_nice (int nice = 0)
1511	CODE:	1539	CODE:
1512	nice = next_pri - nice;	1540	nice = next_pri - nice;
1513	if (nice < PRI_MIN) nice = PRI_MIN;	1541	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1514	if (nice > PRI_MAX) nice = PRI_MAX;	1542	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1515	next_pri = nice + PRI_BIAS;	1543	next_pri = nice;
1516		1544
1517	void	1545	void
1518	flush ()	1546	flush ()
1519	PROTOTYPE:
1520	CODE:	1547	CODE:
1521	while (nreqs)	1548	while (eio_nreqs ())
1522	{	1549	{
1523	poll_wait ();	1550	poll_wait ();
1524	poll_cb (0);	1551	poll_cb ();
1525	}	1552	}
1526		1553
1527	void
1528	poll()
1529	PROTOTYPE:
1530	CODE:
1531	if (nreqs)
1532	{
1533	poll_wait ();
1534	poll_cb (0);
1535	}
1536
1537	int	1554	int
1538	poll_fileno()	1555	poll ()
1539	PROTOTYPE:
1540	CODE:	1556	CODE:
1541	RETVAL = respipe [0];	1557	poll_wait ();
		1558	RETVAL = poll_cb ();
1542	OUTPUT:	1559	OUTPUT:
1543	RETVAL	1560	RETVAL
1544		1561
1545	int	1562	int
1546	poll_cb(...)	1563	poll_fileno ()
1547	PROTOTYPE:
1548	CODE:	1564	CODE:
1549	RETVAL = poll_cb (0);	1565	RETVAL = s_epipe_fd (&respipe);
1550	OUTPUT:	1566	OUTPUT:
1551	RETVAL	1567	RETVAL
1552		1568
1553	int	1569	int
1554	poll_some(int max = 0)	1570	poll_cb (...)
1555	PROTOTYPE: $	1571	PROTOTYPE:
1556	CODE:	1572	CODE:
1557	RETVAL = poll_cb (max);	1573	RETVAL = poll_cb ();
1558	OUTPUT:	1574	OUTPUT:
1559	RETVAL	1575	RETVAL
1560		1576
1561	void	1577	void
1562	poll_wait()	1578	poll_wait ()
1563	PROTOTYPE:
1564	CODE:	1579	CODE:
1565	if (nreqs)
1566	poll_wait ();	1580	poll_wait ();
1567		1581
1568	int	1582	int
1569	nreqs()	1583	nreqs ()
1570	PROTOTYPE:
1571	CODE:	1584	CODE:
1572	RETVAL = nreqs;	1585	RETVAL = eio_nreqs ();
1573	OUTPUT:	1586	OUTPUT:
1574	RETVAL	1587	RETVAL
1575		1588
1576	int	1589	int
1577	nready()	1590	nready ()
1578	PROTOTYPE:
1579	CODE:	1591	CODE:
1580	RETVAL = get_nready ();	1592	RETVAL = eio_nready ();
1581	OUTPUT:	1593	OUTPUT:
1582	RETVAL	1594	RETVAL
1583		1595
1584	int	1596	int
1585	npending()	1597	npending ()
1586	PROTOTYPE:
1587	CODE:	1598	CODE:
1588	RETVAL = get_npending ();	1599	RETVAL = eio_npending ();
1589	OUTPUT:	1600	OUTPUT:
1590	RETVAL	1601	RETVAL
1591		1602
		1603	int
		1604	nthreads ()
		1605	CODE:
		1606	RETVAL = eio_nthreads ();
		1607	OUTPUT:
		1608	RETVAL
		1609
		1610	int
		1611	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1612	CODE:
		1613	RETVAL = posix_fadvise (fh, offset, length, advice);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	IV
		1618	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1619	CODE:
		1620	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1621	OUTPUT:
		1622	RETVAL
		1623
		1624	void
		1625	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1626	PPCODE:
		1627	sv_unmagic (scalar, MMAP_MAGIC);
		1628	{
		1629	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1630	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1631	if (addr == (void *)-1)
		1632	XSRETURN_NO;
		1633
		1634	sv_force_normal (scalar);
		1635
		1636	/* we store the length in mg_obj, as namlen is I32 :/ */
		1637	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1638	->mg_obj = (SV *)length;
		1639
		1640	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1641
		1642	if (!(prot & PROT_WRITE))
		1643	SvREADONLY_on (scalar);
		1644
		1645	if (SvLEN (scalar))
		1646	Safefree (SvPVX (scalar));
		1647
		1648	SvPVX (scalar) = (char *)addr;
		1649	SvCUR_set (scalar, length);
		1650	SvLEN_set (scalar, 0);
		1651	SvPOK_only (scalar);
		1652
		1653	XSRETURN_YES;
		1654	}
		1655
		1656	void
		1657	munmap (SV *scalar)
		1658	CODE:
		1659	sv_unmagic (scalar, MMAP_MAGIC);
		1660
		1661	int
		1662	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1663	ALIAS:
		1664	mprotect = 1
		1665	CODE:
		1666	{
		1667	STRLEN svlen;
		1668	void *addr = SvPVbyte (scalar, svlen);
		1669	size_t len = SvUV (length);
		1670
		1671	if (offset < 0)
		1672	offset += svlen;
		1673
		1674	if (offset < 0 || offset > svlen)
		1675	croak ("offset outside of scalar");
		1676
		1677	if (!SvOK (length) || len + offset > svlen)
		1678	len = svlen - offset;
		1679
		1680	addr = (void *)(((intptr_t)addr) + offset);
		1681	eio_page_align (&addr, &len);
		1682
		1683	switch (ix)
		1684	{
		1685	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1686	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1687	}
		1688	}
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
		1693	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1694	CODE:
		1695	{
		1696	STRLEN svlen;
		1697	void *addr = SvPVbyte (scalar, svlen);
		1698	size_t len = SvUV (length);
		1699
		1700	if (offset < 0)
		1701	offset += svlen;
		1702
		1703	if (offset < 0 || offset > svlen)
		1704	croak ("offset outside of scalar");
		1705
		1706	if (!SvOK (length) || len + offset > svlen)
		1707	len = svlen - offset;
		1708
		1709	addr = (void *)(((intptr_t)addr) + offset);
		1710	eio_page_align (&addr, &len);
		1711	#if _POSIX_MEMLOCK_RANGE
		1712	RETVAL = munlock (addr, len);
		1713	#else
		1714	RETVAL = ((errno = ENOSYS), -1);
		1715	#endif
		1716	}
		1717	OUTPUT:
		1718	RETVAL
		1719
		1720	int
		1721	munlockall ()
		1722	CODE:
		1723	#if _POSIX_MEMLOCK
		1724	munlockall ();
		1725	#else
		1726	RETVAL = -1;
		1727	errno = ENOSYS;
		1728	#endif
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	void _on_next_submit (SV *cb)
		1733	CODE:
		1734	SvREFCNT_dec (on_next_submit);
		1735	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1736
1592	PROTOTYPES: DISABLE	1737	PROTOTYPES: DISABLE
1593		1738
		1739	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1740
		1741	void
		1742	DESTROY (SV *self)
		1743	CODE:
		1744	{
		1745	aio_wd wd = SvAIO_WD (self);
		1746	#if HAVE_AT
		1747	SV *callback = &PL_sv_undef;
		1748	dREQ; /* clobbers next_pri :/ */
		1749	req->type = EIO_WD_CLOSE;
		1750	req->wd = wd;
		1751	REQ_SEND;
		1752	#else
		1753	eio_wd_close_sync (wd);
		1754	#endif
		1755	}
		1756
1594	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1757	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1595		1758
1596	void	1759	void
1597	cancel (aio_req_ornot req)	1760	cancel (aio_req_ornot req)
1598	CODE:	1761	CODE:
1599	req_cancel (req);	1762	eio_cancel (req);
1600		1763
1601	void	1764	void
1602	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1765	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1603	CODE:	1766	PPCODE:
		1767	{
		1768	if (GIMME_V != G_VOID)
		1769	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1770
		1771	if (items > 1)
		1772	{
		1773	SV *cb_cv =get_cb (callback);
		1774
1604	SvREFCNT_dec (req->callback);	1775	SvREFCNT_dec (req->callback);
1605	req->callback = newSVsv (callback);	1776	req->callback = SvREFCNT_inc (cb_cv);
		1777	}
		1778	}
1606		1779
1607	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1780	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1608		1781
1609	void	1782	void
1610	add (aio_req grp, ...)	1783	add (aio_req grp, ...)
1611	PPCODE:	1784	PPCODE:
1612	{	1785	{
1613	int i;	1786	int i;
1614	aio_req req;
1615		1787
1616	if (grp->fd == 2)	1788	if (grp->int1 == 2)
1617	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1789	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1618		1790
1619	for (i = 1; i < items; ++i )	1791	for (i = 1; i < items; ++i )
1620	{	1792	{
		1793	aio_req req;
		1794
1621	if (GIMME_V != G_VOID)	1795	if (GIMME_V != G_VOID)
1622	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1796	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1623		1797
1624	req = SvAIO_REQ (ST (i));	1798	req = SvAIO_REQ (ST (i));
1625		1799
1626	if (req)	1800	if (req)
1627	{	1801	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	}	1802	}
1640	}	1803	}
1641		1804
1642	void	1805	void
1643	cancel_subs (aio_req_ornot req)	1806	cancel_subs (aio_req_ornot req)
…		…
1652	AV *av;	1815	AV *av;
1653		1816
1654	grp->errorno = errno;	1817	grp->errorno = errno;
1655		1818
1656	av = newAV ();	1819	av = newAV ();
		1820	av_extend (av, items - 1);
1657		1821
1658	for (i = 1; i < items; ++i )	1822	for (i = 1; i < items; ++i )
1659	av_push (av, newSVsv (ST (i)));	1823	av_push (av, newSVsv (ST (i)));
1660		1824
1661	SvREFCNT_dec (grp->data);	1825	SvREFCNT_dec (grp->sv1);
1662	grp->data = (SV *)av;	1826	grp->sv1 = (SV *)av;
1663	}	1827	}
1664		1828
1665	void	1829	void
1666	errno (aio_req grp, int errorno = errno)	1830	errno (aio_req grp, int errorno = errno)
1667	CODE:	1831	CODE:
1668	grp->errorno = errorno;	1832	grp->errorno = errorno;
1669		1833
1670	void	1834	void
1671	limit (aio_req grp, int limit)	1835	limit (aio_req grp, int limit)
1672	CODE:	1836	CODE:
1673	grp->fd2 = limit;	1837	eio_grp_limit (grp, limit);
1674	aio_grp_feed (grp);
1675		1838
1676	void	1839	void
1677	feed (aio_req grp, SV *callback=&PL_sv_undef)	1840	feed (aio_req grp, SV *callback=&PL_sv_undef)
1678	CODE:	1841	CODE:
1679	{	1842	{
1680	SvREFCNT_dec (grp->fh2);	1843	SvREFCNT_dec (grp->sv2);
1681	grp->fh2 = newSVsv (callback);	1844	grp->sv2 = newSVsv (callback);
		1845	grp->feed = aio_grp_feed;
1682		1846
1683	if (grp->fd2 <= 0)	1847	if (grp->int2 <= 0)
1684	grp->fd2 = 2;	1848	grp->int2 = 2;
1685		1849
1686	aio_grp_feed (grp);	1850	eio_grp_limit (grp, grp->int2);
1687	}	1851	}
1688		1852

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