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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.210 by root, Fri Apr 6 11:39:25 2012 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
		21	# include <sys/mman.h>
		22	#endif
		23
34	# if __linux	24	#if __linux__
35	# include <sys/sendfile.h>	25	# include <linux/fs.h>
36	# elif __freebsd	26	# ifdef FS_IOC_FIEMAP
37	# include <sys/socket.h>	27	# include <linux/fiemap.h>
38	# include <sys/uio.h>	28	# define HAVE_FIEMAP 1
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>
43	# else
44	# error sendfile support requested but not available
45	# endif	29	# endif
46	#endif	30	#endif
47		31
48	/* used for struct dirent, AIX doesn't provide it */	32	/* perl namespace pollution */
49	#ifndef NAME_MAX	33	#undef VERSION
50	# define NAME_MAX 4096	34
		35	/* perl stupidly overrides readdir and maybe others */
		36	/* with thread-unsafe versions, imagine that :( */
		37	#undef readdir
		38	#undef opendir
		39	#undef closedir
		40
		41	#ifdef _WIN32
		42
		43	// perl overrides all those nice libc functions
		44
		45	#undef malloc
		46	#undef free
		47	#undef open
		48	#undef read
		49	#undef write
		50	#undef send
		51	#undef recv
		52	#undef stat
		53	#undef lstat
		54	#undef fstat
		55	#undef truncate
		56	#undef ftruncate
		57	#undef open
		58	#undef link
		59	#undef close
		60	#undef unlink
		61	#undef mkdir
		62	#undef rmdir
		63	#undef rename
		64	#undef lseek
		65	#undef opendir
		66	#undef readdir
		67	#undef closedir
		68	#undef chmod
		69	#undef fchmod
		70	#undef dup
		71	#undef dup2
		72	#undef abort
		73	#undef pipe
		74
		75	#define EIO_STRUCT_STAT struct _stati64
		76	#define EIO_STRUCT_STATI64
		77
		78	#else
		79
		80	#include <sys/time.h>
		81	#include <sys/select.h>
		82	#include <unistd.h>
		83	#include <utime.h>
		84	#include <signal.h>
		85
		86	#define EIO_STRUCT_STAT Stat_t
		87
51	#endif	88	#endif
52		89
53	#ifndef PTHREAD_STACK_MIN	90	/*****************************************************************************/
54	/* care for broken platforms, e.g. windows */	91
55	# define PTHREAD_STACK_MIN 16384	92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
56	#endif	96	#endif
57		97
58	#if __ia64	98	#define expect_false(expr) expect ((expr) != 0, 0)
59	# define STACKSIZE 65536	99	#define expect_true(expr) expect ((expr) != 0, 1)
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	100
61	# define STACKSIZE PTHREAD_STACK_MIN	101	/*****************************************************************************/
62	#else	102
63	# define STACKSIZE 16384	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	#if !HAVE_POSIX_FADVISE
		129	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
64	#endif	130	#endif
65		131
66	/* wether word reads are potentially non-atomic.	132	#if !HAVE_POSIX_MADVISE
67	* this is conservatice, likely most arches this runs	133	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
68	* on have atomic word read/writes.	134	#endif
69	*/	135
70	#ifndef WORDREAD_UNSAFE	136	#ifndef MAP_ANONYMOUS
71	# if __i386 || __x86_64	137	# ifdef MAP_ANON
72	# define WORDREAD_UNSAFE 0	138	# define MAP_ANONYMOUS MAP_ANON
73	# else	139	# else
74	# define WORDREAD_UNSAFE 1	140	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
75	# endif	141	# endif
76	#endif	142	#endif
77		143
78	/* buffer size for various temporary buffers */	144	/* defines all sorts of constants to 0 unless they are already defined */
79	#define AIO_BUFSIZE 65536	145	#include "def0.h"
80		146
81	#define dBUF \	147	#ifndef makedev
82	char *aio_buf; \	148	# define makedev(maj,min) (((maj) << 8) | (min))
83	LOCK (wrklock); \	149	#endif
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	150	#ifndef major
85	UNLOCK (wrklock); \	151	# define major(dev) ((dev) >> 8)
86	if (!aio_buf) \	152	#endif
		153	#ifndef minor
		154	# define minor(dev) ((dev) & 0xff)
		155	#endif
		156
		157	#ifndef PAGESIZE
		158	# define PAGESIZE sysconf (_SC_PAGESIZE)
		159	#endif
		160
		161	/*****************************************************************************/
		162
		163	static void
		164	fiemap (eio_req *req)
		165	{
		166	req->result = -1;
		167
		168	#if HAVE_FIEMAP
		169	for (;;)
		170	{
		171	int count = req->int3;
		172
		173	if (count < 0)
		174	{
		175	struct fiemap fiemap;
		176
		177	fiemap.fm_start = req->offs;
		178	fiemap.fm_length = req->size;
		179	fiemap.fm_flags = req->int2;
		180	fiemap.fm_extent_count = 0;
		181
		182	if (ioctl (req->int1, FS_IOC_FIEMAP, &fiemap))
		183	return;
		184
		185	count = fiemap.fm_mapped_extents;
		186	}
		187
		188	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		189	errno = ENOMEM;
		190	if (!fiemap)
87	return -1;	191	return;
		192
		193	req->ptr1 = fiemap;
		194	req->flags |= EIO_FLAG_PTR1_FREE;
		195
		196	fiemap->fm_start = req->offs;
		197	fiemap->fm_length = req->size;
		198	fiemap->fm_flags = req->int2;
		199	fiemap->fm_extent_count = count;
		200
		201	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		202	return;
		203
		204	if (req->int3 >= 0)
		205	break; /* when not autosizing we are done */
		206
		207	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		208	break; /* autosizing successful, we are done */
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
		215	#else
		216	errno = ENOSYS;
		217	#endif
		218	}
		219
		220	/*****************************************************************************/
88		221
89	enum {	222	enum {
90	REQ_QUIT,	223	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_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};	224	};
102		225
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;	226	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
137		229
138	enum {	230	static SV *on_next_submit;
139	PRI_MIN = -4,	231	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	232	static int max_outstanding;
141		233
142	DEFAULT_PRI = 0,	234	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		235
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
206
207	/*
208	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.
211	*/
212	typedef struct {
213	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
214	int size;
215	} reqq;
216
217	static reqq req_queue;
218	static reqq res_queue;
219
220	int reqq_push (reqq *q, aio_req req)
221	{
222	int pri = req->pri;
223	req->next = 0;
224
225	if (q->qe[pri])
226	{
227	q->qe[pri]->next = req;
228	q->qe[pri] = req;
229	}
230	else
231	q->qe[pri] = q->qs[pri] = req;
232
233	return q->size++;
234	}
235
236	aio_req reqq_shift (reqq *q)
237	{
238	int pri;
239
240	if (!q->size)
241	return 0;
242
243	--q->size;
244
245	for (pri = NUM_PRI; pri--; )
246	{
247	aio_req req = q->qs[pri];
248
249	if (req)
250	{
251	if (!(q->qs[pri] = req->next))
252	q->qe[pri] = 0;
253
254	return req;
255	}
256	}
257
258	abort ();
259	}
260
261	static int poll_cb (int max);
262	static void req_invoke (aio_req req);
263	static void req_free (aio_req req);	236	static void req_destroy (aio_req req);
264	static void req_cancel (aio_req req);	237	static void req_cancel (aio_req req);
265		238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
		252
266	/* must be called at most once */	253	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
268	{	256	{
269	if (!req->self)	257	if (!req->self)
270	{	258	{
271	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
272	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
273	}	261	}
274		262
275	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
276	}	264	}
277		265
278	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
		268	{
		269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
279	{	274	{
280	MAGIC *mg;	275	MAGIC *mg;
281		276
282	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
283	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
284		283
285	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
286		285
287	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	287	}
289		288
		289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
290	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
291	{	302	{
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
293	{	304	{
294	int old_len = grp->length;
295
296	if (grp->fh2 && SvOK (grp->fh2))
297	{
298	dSP;	305	dSP;
299		306
300	ENTER;	307	ENTER;
301	SAVETMPS;	308	SAVETMPS;
302	PUSHMARK (SP);	309	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
304	PUTBACK;	311	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	313	SPAGAIN;
307	FREETMPS;	314	FREETMPS;
308	LEAVE;	315	LEAVE;
309	}
310
311	/* stop if no progress has been made */
312	if (old_len == grp->length)
313	{
314	SvREFCNT_dec (grp->fh2);
315	grp->fh2 = 0;
316	break;
317	}
318	}	316	}
319	}	317	}
320		318
321	static void aio_grp_dec (aio_req grp)	319	static void
		320	req_submit (eio_req *req)
322	{	321	{
323	--grp->length;	322	eio_submit (req);
324		323
325	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
326	aio_grp_feed (grp);
327
328	/* finish, if done */
329	if (!grp->length && grp->fd)
330	{	325	{
331	req_invoke (grp);	326	dSP;
332	req_free (grp);	327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
333	}	334	}
334	}	335	}
335		336
336	static void poll_wait ()	337	static int
		338	req_invoke (eio_req *req)
337	{	339	{
338	fd_set rfd;	340	if (req->flags & FLAG_SV2_RO_OFF)
		341	SvREADONLY_off (req->sv2);
339		342
340	while (nreqs)	343	if (!EIO_CANCELLED (req) && req->callback)
341	{	344	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)
358	{
359	dSP;	345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
360		348
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362	{
363	ENTER;	349	ENTER;
364	SAVETMPS;	350	SAVETMPS;
365	PUSHMARK (SP);	351	PUSHMARK (SP);
366	EXTEND (SP, 1);	352	EXTEND (SP, 1);
367		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
		356	{
		357	sv_result = sv_result_cache; sv_result_cache = 0;
		358	SvIV_set (sv_result, req->result);
		359	SvIOK_only (sv_result);
		360	}
		361	else
		362	{
		363	sv_result = newSViv (req->result);
		364	SvREADONLY_on (sv_result);
		365	}
		366
368	switch (req->type)	367	switch (req->type)
369	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
370	case REQ_READDIR:	373	case EIO_READDIR:
371	{	374	{
372	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
373		376
374	if (req->result >= 0)	377	if (req->result >= 0)
375	{	378	{
376	int i;	379	int i;
377	char *buf = req->data2ptr;	380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
378	AV *av = newAV ();	382	AV *av = newAV ();
379		383
380	av_extend (av, req->result - 1);	384	av_extend (av, req->result - 1);
381		385
382	for (i = 0; i < req->result; ++i)	386	for (i = 0; i < req->result; ++i)
383	{	387	{
384	SV *sv = newSVpv (buf, 0);	388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
385		391
		392	if (req->int1 & EIO_READDIR_CUSTOM2)
		393	{
		394	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		395	AV *avent = newAV ();
		396
		397	av_extend (avent, 2);
		398
		399	if (!sv_type [ent->type])
		400	{
		401	sv_type [ent->type] = newSViv (ent->type);
		402	SvREADONLY_on (sv_type [ent->type]);
		403	}
		404
		405	av_store (avent, 0, namesv);
		406	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		407	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		408
		409	av_store (av, i, newRV_noinc ((SV *)avent));
		410	}
		411	else
386	av_store (av, i, sv);	412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
		418	SV *name = newSVpv (names, 0);
		419	av_store (av, i, name);
387	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
		421	}
388	}	422	}
389		423
390	rv = sv_2mortal (newRV_noinc ((SV *)av));	424	rv = sv_2mortal (newRV_noinc ((SV *)av));
391	}	425	}
392		426
393	PUSHs (rv);	427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
394	}	431	}
395	break;	432	break;
396		433
397	case REQ_OPEN:	434	case EIO_OPEN:
398	{	435	{
399	/* convert fd to fh */	436	/* convert fd to fh */
400	SV *fh;	437	SV *fh = &PL_sv_undef;
401		438
402	PUSHs (sv_2mortal (newSViv (req->result)));	439	if (req->result >= 0)
403	PUTBACK;	440	{
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	441	GV *gv = (GV *)sv_newmortal ();
405	SPAGAIN;	442	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		443	char sym [64];
		444	int symlen;
		445
		446	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		447	gv_init (gv, aio_stash, sym, symlen, 0);
406		448
407	fh = SvREFCNT_inc (POPs);	449	symlen = snprintf (
		450	sym,
		451	sizeof (sym),
		452	"%s&=%d",
		453	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		454	(int)req->result
		455	);
408		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
409	PUSHMARK (SP);	461	PUSHs (fh);
410	XPUSHs (sv_2mortal (fh));
411	}	462	}
412	break;	463	break;
413		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
414	case REQ_GROUP:	497	case EIO_GROUP:
415	req->fd = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
416		499
417	if (req->data)	500	if (req->sv1)
418	{	501	{
419	int i;	502	int i;
420	AV *av = (AV *)req->data;	503	AV *av = (AV *)req->sv1;
421		504
422	EXTEND (SP, AvFILL (av) + 1);	505	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
425	}	508	}
426	break;	509	break;
427		510
428	case REQ_NOP:	511	case EIO_NOP:
429	case REQ_BUSY:	512	case EIO_BUSY:
430	break;	513	break;
431		514
		515	case EIO_READLINK:
		516	case EIO_REALPATH:
		517	if (req->result > 0)
		518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		519	break;
		520
		521	case EIO_STAT:
		522	case EIO_LSTAT:
		523	case EIO_FSTAT:
		524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
		526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		535	break;
		536
		537	case EIO_READ:
		538	{
		539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		540	*SvEND (req->sv2) = 0;
		541	SvPOK_only (req->sv2);
		542	SvSETMAGIC (req->sv2);
		543	PUSHs (sv_result);
		544	}
		545	break;
		546
		547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
		549	{
		550	if (!req->result)
		551	{
		552	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		553
		554	if (fiemap->fm_extent_count)
		555	{
		556	AV *av = newAV ();
		557	int i;
		558
		559	while (fiemap->fm_mapped_extents)
		560	{
		561	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		562	AV *ext_av = newAV ();
		563
		564	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		565	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		566	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		567	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		568
		569	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		570	}
		571
		572	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		573	}
		574	else
		575	{
		576	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		577	PUSHs (sv_result);
		578	}
		579	}
		580	}
		581	else
		582	PUSHs (sv_result);
		583	break;
		584
		585	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		586	if (req->result > 0)
		587	SvIV_set (sv_result, 0);
		588	/* FALLTHROUGH */
		589
432	default:	590	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	591	PUSHs (sv_result);
434	break;	592	break;
435	}	593	}
436		594
437	errno = req->errorno;	595	errno = req->errorno;
438		596
439	PUTBACK;	597	PUTBACK;
440	call_sv (req->callback, G_VOID | G_EVAL);	598	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
441	SPAGAIN;	599	SPAGAIN;
		600
		601	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		602	SvREFCNT_dec (sv_result);
		603	else
		604	sv_result_cache = sv_result;
442		605
443	FREETMPS;	606	FREETMPS;
444	LEAVE;	607	LEAVE;
		608
		609	PUTBACK;
445	}	610	}
446		611
447	if (req->grp)	612	return !!SvTRUE (ERRSV);
448	{
449	aio_req grp = req->grp;
450
451	/* unlink request */
452	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
453	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
454
455	if (grp->grp_first == req)
456	grp->grp_first = req->grp_next;
457
458	aio_grp_dec (grp);
459	}
460
461	if (SvTRUE (ERRSV))
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	613	}
467		614
468	static void req_free (aio_req req)	615	static void
		616	req_destroy (aio_req req)
469	{	617	{
470	if (req->self)	618	if (req->self)
471	{	619	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	620	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	621	SvREFCNT_dec (req->self);
474	}	622	}
475		623
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	624	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	625	SvREFCNT_dec (req->sv2);
		626	SvREFCNT_dec (req->sv3);
		627	SvREFCNT_dec (req->sv4);
479	SvREFCNT_dec (req->callback);	628	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481		629
482	if (req->type == REQ_READDIR)
483	free (req->data2ptr);
484
485	Safefree (req);	630	free (req);
486	}	631	}
487		632
		633	static void
488	static void req_cancel_subs (aio_req grp)	634	req_cancel_subs (aio_req grp)
489	{	635	{
490	aio_req sub;
491
492	if (grp->type != REQ_GROUP)	636	if (grp->type != EIO_GROUP)
493	return;	637	return;
494		638
495	SvREFCNT_dec (grp->fh2);	639	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	640	grp->sv2 = 0;
497		641
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	642	eio_grp_cancel (grp);
499	req_cancel (sub);
500	}	643	}
501		644
502	static void req_cancel (aio_req req)	645	static void ecb_cold
		646	create_respipe (void)
503	{	647	{
504	req->flags |= FLAG_CANCELLED;	648	if (s_epipe_renew (&respipe))
505		649	croak ("IO::AIO: unable to initialize result pipe");
506	req_cancel_subs (req);
507	}	650	}
508		651
509	static int poll_cb (int max)	652	static void
		653	poll_wait (void)
510	{	654	{
511	dSP;	655	while (eio_nreqs ())
512	int count = 0;	656	{
513	int do_croak = 0;	657	int size;
514	aio_req req;
515		658
		659	X_LOCK (reslock);
		660	size = res_queue.size;
		661	X_UNLOCK (reslock);
		662
		663	if (size)
		664	return;
		665
		666	etp_maybe_start_thread ();
		667
		668	s_epipe_wait (&respipe);
		669	}
		670	}
		671
		672	static int
		673	poll_cb (void)
		674	{
516	for (;;)	675	for (;;)
517	{	676	{
518	while (max <= 0 || count < max)	677	int res = eio_poll ();
		678
		679	if (res > 0)
		680	croak (0);
		681
		682	if (!max_outstanding || max_outstanding > eio_nreqs ())
		683	return res;
		684
		685	poll_wait ();
		686	}
		687	}
		688
		689	static void ecb_cold
		690	reinit (void)
		691	{
		692	create_respipe ();
		693
		694	if (eio_init (want_poll, done_poll) < 0)
		695	croak ("IO::AIO: unable to initialise eio library");
		696	}
		697
		698	/*****************************************************************************/
		699
		700	#if !_POSIX_MAPPED_FILES
		701	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		702	# define munmap(addr,length) (errno = ENOSYS, -1)
		703	#endif
		704
		705	#if !_POSIX_MEMORY_PROTECTION
		706	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		707	# define PROT_NONE 0
		708	# define PROT_WRITE 0
		709	# define MAP_PRIVATE 0
		710	# define MAP_SHARED 0
		711	# define MAP_FIXED 0
		712	#endif
		713
		714	#define MMAP_MAGIC PERL_MAGIC_ext
		715
		716	static int ecb_cold
		717	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		718	{
		719	int old_errno = errno;
		720	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		721	errno = old_errno;
		722
		723	mg->mg_obj = 0; /* just in case */
		724
		725	SvREADONLY_off (sv);
		726
		727	if (SvPVX (sv) != mg->mg_ptr)
		728	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		729
		730	SvCUR_set (sv, 0);
		731	SvPVX (sv) = 0;
		732	SvOK_off (sv);
		733
		734	return 0;
		735	}
		736
		737	static MGVTBL mmap_vtbl = {
		738	0, 0, 0, 0, mmap_free
		739	};
		740
		741	/*****************************************************************************/
		742
		743	static SV *
		744	get_cb (SV *cb_sv)
		745	{
		746	SvGETMAGIC (cb_sv);
		747	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		748	}
		749
		750	static aio_req ecb_noinline
		751	dreq (SV *callback)
		752	{
		753	SV *cb_cv;
		754	aio_req req;
		755	int req_pri = next_pri;
		756	next_pri = EIO_PRI_DEFAULT;
		757
		758	cb_cv = get_cb (callback);
		759
		760	req = calloc (sizeof (*req), 1);
		761	if (!req)
		762	croak ("out of memory during eio_req allocation");
		763
		764	req->callback = SvREFCNT_inc (cb_cv);
		765	req->pri = req_pri;
		766
		767	return req;
		768	}
		769
		770	#define dREQ \
		771	aio_req req = dreq (callback); \
		772
		773	#define REQ_SEND \
		774	PUTBACK; \
		775	req_submit (req); \
		776	SPAGAIN; \
		777	\
		778	if (GIMME_V != G_VOID) \
		779	XPUSHs (req_sv (req, aio_req_stash));
		780
		781	ecb_inline void
		782	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		783	{
		784	if (expect_false (SvROK (path)))
		785	{
		786	SV *rv = SvRV (path);
		787	SV *wdob;
		788
		789	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
519	{	790	{
520	LOCK (reslock);	791	path = AvARRAY (rv)[1];
521	req = reqq_shift (&res_queue);	792	wdob = AvARRAY (rv)[0];
522		793
523	if (req)	794	if (SvOK (wdob))
524	{	795	{
525	--npending;	796	*wd = SvAIO_WD (wdob);
526		797	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}	798	}
550	else	799	else
551	{	800	*wd = EIO_INVALID_WD;
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}	801	}
		802	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		803	{
		804	*wd = (aio_wd)(long)SvIVX (rv);
		805	*wdsv = SvREFCNT_inc_NN (rv);
		806	*ptr = ".";
		807	return; /* path set to "." */
		808	}
		809	else
		810	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		811	}
572		812
573	if (nreqs <= max_outstanding)	813	*pathsv = newSVsv (path);
		814	*ptr = SvPVbyte_nolen (*pathsv);
		815	}
		816
		817	static void ecb_noinline
		818	req_set_path1 (aio_req req, SV *path)
		819	{
		820	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		821	}
		822
		823	static void ecb_noinline
		824	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		825	{
		826	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		827
		828	switch (SvTYPE (rv))
		829	{
		830	case SVt_PVIO:
		831	case SVt_PVLV:
		832	case SVt_PVGV:
		833	req->type = type_fh;
		834	req->sv1 = newSVsv (fh_or_path);
		835	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
574	break;	836	break;
575		837
576	poll_wait ();	838	default:
577		839	req->type = type_path;
578	max = 0;	840	req_set_path1 (req, fh_or_path);
		841	break;
579	}	842	}
580
581	return count;
582	}	843	}
583		844
584	static void *aio_proc(void *arg);	845	XS(boot_IO__AIO) ecb_cold;
585		846
586	static void start_thread (void)
587	{
588	sigset_t fullsigset, oldsigset;
589	pthread_attr_t attr;
590
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600	sigfillset (&fullsigset);
601
602	LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606	{
607	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;
609	wrk_first.next->prev = wrk;
610	wrk_first.next = wrk;
611	++started;
612	}
613	else
614	free (wrk);
615
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);
618	}
619
620	static void req_send (aio_req req)
621	{
622	while (started < wanted && nreqs >= started)
623	start_thread ();
624
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	req_send (req);
644	}
645
646	static void min_parallel (int nthreads)
647	{
648	if (wanted < nthreads)
649	wanted = nthreads;
650	}
651
652	static void max_parallel (int nthreads)
653	{
654	int cur = started;
655
656	if (wanted > nthreads)
657	wanted = nthreads;
658
659	while (cur > wanted)
660	{
661	end_thread ();
662	cur--;
663	}
664
665	while (started > wanted)
666	{
667	poll_wait ();
668	poll_cb (0);
669	}
670	}
671
672	static void create_pipe ()
673	{
674	if (pipe (respipe))
675	croak ("unable to initialize result pipe");
676
677	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
678	croak ("cannot set result pipe to nonblocking mode");
679
680	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
681	croak ("cannot set result pipe to nonblocking mode");
682	}
683
684	/*****************************************************************************/
685	/* work around various missing functions */
686
687	#if !HAVE_PREADWRITE
688	# define pread aio_pread
689	# define pwrite aio_pwrite
690
691	/*
692	* make our pread/pwrite safe against themselves, but not against
693	* normal read/write by using a mutex. slows down execution a lot,
694	* but that's your problem, not mine.
695	*/
696	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
697
698	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699	{
700	ssize_t res;
701	off_t ooffset;
702
703	LOCK (preadwritelock);
704	ooffset = lseek (fd, 0, SEEK_CUR);
705	lseek (fd, offset, SEEK_SET);
706	res = read (fd, buf, count);
707	lseek (fd, ooffset, SEEK_SET);
708	UNLOCK (preadwritelock);
709
710	return res;
711	}
712
713	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
714	{
715	ssize_t res;
716	off_t ooffset;
717
718	LOCK (preadwritelock);
719	ooffset = lseek (fd, 0, SEEK_CUR);
720	lseek (fd, offset, SEEK_SET);
721	res = write (fd, buf, count);
722	lseek (fd, offset, SEEK_SET);
723	UNLOCK (preadwritelock);
724
725	return res;
726	}
727	#endif
728
729	#if !HAVE_FDATASYNC
730	# define fdatasync fsync
731	#endif
732
733	#if !HAVE_READAHEAD
734	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
735
736	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
737	{
738	dBUF;
739
740	while (count > 0)
741	{
742	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
743
744	pread (fd, aio_buf, len, offset);
745	offset += len;
746	count -= len;
747	}
748
749	errno = 0;
750	}
751
752	#endif
753
754	#if !HAVE_READDIR_R
755	# define readdir_r aio_readdir_r
756
757	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
758
759	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760	{
761	struct dirent *e;
762	int errorno;
763
764	LOCK (readdirlock);
765
766	e = readdir (dirp);
767	errorno = errno;
768
769	if (e)
770	{
771	*res = ent;
772	strcpy (ent->d_name, e->d_name);
773	}
774	else
775	*res = 0;
776
777	UNLOCK (readdirlock);
778
779	errno = errorno;
780	return e ? 0 : -1;
781	}
782	#endif
783
784	/* sendfile always needs emulation */
785	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
786	{
787	ssize_t res;
788
789	if (!count)
790	return 0;
791
792	#if HAVE_SENDFILE
793	# if __linux
794	res = sendfile (ofd, ifd, &offset, count);
795
796	# elif __freebsd
797	/*
798	* Of course, the freebsd sendfile is a dire hack with no thoughts
799	* wasted on making it similar to other I/O functions.
800	*/
801	{
802	off_t sbytes;
803	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
804
805	if (res < 0 && sbytes)
806	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
807	res = sbytes;
808	}
809
810	# elif __hpux
811	res = sendfile (ofd, ifd, offset, count, 0, 0);
812
813	# elif __solaris
814	{
815	struct sendfilevec vec;
816	size_t sbytes;
817
818	vec.sfv_fd = ifd;
819	vec.sfv_flag = 0;
820	vec.sfv_off = offset;
821	vec.sfv_len = count;
822
823	res = sendfilev (ofd, &vec, 1, &sbytes);
824
825	if (res < 0 && sbytes)
826	res = sbytes;
827	}
828
829	# endif
830	#else
831	res = -1;
832	errno = ENOSYS;
833	#endif
834
835	if (res < 0
836	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
837	#if __solaris
838	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
839	#endif
840	)
841	)
842	{
843	/* emulate sendfile. this is a major pain in the ass */
844	dBUF;
845
846	res = 0;
847
848	while (count)
849	{
850	ssize_t cnt;
851
852	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
853
854	if (cnt <= 0)
855	{
856	if (cnt && !res) res = -1;
857	break;
858	}
859
860	cnt = write (ofd, aio_buf, cnt);
861
862	if (cnt <= 0)
863	{
864	if (cnt && !res) res = -1;
865	break;
866	}
867
868	offset += cnt;
869	res += cnt;
870	count -= cnt;
871	}
872	}
873
874	return res;
875	}
876
877	/* read a full directory */
878	static void scandir_ (aio_req req, worker *self)
879	{
880	DIR *dirp;
881	union
882	{
883	struct dirent d;
884	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
885	} *u;
886	struct dirent *entp;
887	char *name, *names;
888	int memlen = 4096;
889	int memofs = 0;
890	int res = 0;
891	int errorno;
892
893	LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);
895	self->dbuf = u = malloc (sizeof (*u));
896	req->data2ptr = names = malloc (memlen);
897	UNLOCK (wrklock);
898
899	if (dirp && u && names)
900	for (;;)
901	{
902	errno = 0;
903	readdir_r (dirp, &u->d, &entp);
904
905	if (!entp)
906	break;
907
908	name = entp->d_name;
909
910	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
911	{
912	int len = strlen (name) + 1;
913
914	res++;
915
916	while (memofs + len > memlen)
917	{
918	memlen *= 2;
919	LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);
921	UNLOCK (wrklock);
922
923	if (!names)
924	break;
925	}
926
927	memcpy (names + memofs, name, len);
928	memofs += len;
929	}
930	}
931
932	if (errno)
933	res = -1;
934
935	req->result = res;
936	}
937
938	/*****************************************************************************/
939
940	static void *aio_proc (void *thr_arg)
941	{
942	aio_req req;
943	int type;
944	worker *self = (worker *)thr_arg;
945
946	do
947	{
948	LOCK (reqlock);
949
950	for (;;)
951	{
952	self->req = req = reqq_shift (&req_queue);
953
954	if (req)
955	break;
956
957	pthread_cond_wait (&reqwait, &reqlock);
958	}
959
960	--nready;
961
962	UNLOCK (reqlock);
963
964	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966
967	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)
969	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
972
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
975
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
979
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
987
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;
990	case REQ_READDIR: scandir_ (req, self); break;
991
992	case REQ_BUSY:
993	{
994	struct timeval tv;
995
996	tv.tv_sec = req->fd;
997	tv.tv_usec = req->fd2;
998
999	req->result = select (0, 0, 0, 0, &tv);
1000	}
1001
1002	case REQ_GROUP:
1003	case REQ_NOP:
1004	case REQ_QUIT:
1005	break;
1006
1007	default:
1008	req->result = ENOSYS;
1009	break;
1010	}
1011
1012	req->errorno = errno;
1013
1014	LOCK (reslock);
1015
1016	++npending;
1017
1018	if (!reqq_push (&res_queue, req))
1019	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);
1021
1022	self->req = 0;
1023	worker_clear (self);
1024
1025	UNLOCK (reslock);
1026	}
1027	while (type != REQ_QUIT);
1028
1029	LOCK (wrklock);
1030	worker_free (self);
1031	UNLOCK (wrklock);
1032
1033	return 0;
1034	}
1035
1036	/*****************************************************************************/
1037
1038	static void atfork_prepare (void)
1039	{
1040	LOCK (wrklock);
1041	LOCK (reqlock);
1042	LOCK (reslock);
1043	#if !HAVE_PREADWRITE
1044	LOCK (preadwritelock);
1045	#endif
1046	#if !HAVE_READDIR_R
1047	LOCK (readdirlock);
1048	#endif
1049	}
1050
1051	static void atfork_parent (void)
1052	{
1053	#if !HAVE_READDIR_R
1054	UNLOCK (readdirlock);
1055	#endif
1056	#if !HAVE_PREADWRITE
1057	UNLOCK (preadwritelock);
1058	#endif
1059	UNLOCK (reslock);
1060	UNLOCK (reqlock);
1061	UNLOCK (wrklock);
1062	}
1063
1064	static void atfork_child (void)
1065	{
1066	aio_req prv;
1067
1068	while (prv = reqq_shift (&req_queue))
1069	req_free (prv);
1070
1071	while (prv = reqq_shift (&res_queue))
1072	req_free (prv);
1073
1074	while (wrk_first.next != &wrk_first)
1075	{
1076	worker *wrk = wrk_first.next;
1077
1078	if (wrk->req)
1079	req_free (wrk->req);
1080
1081	worker_clear (wrk);
1082	worker_free (wrk);
1083	}
1084
1085	started = 0;
1086	nreqs = 0;
1087
1088	close (respipe [0]);
1089	close (respipe [1]);
1090	create_pipe ();
1091
1092	atfork_parent ();
1093	}
1094
1095	#define dREQ \
1096	aio_req req; \
1097	int req_pri = next_pri; \
1098	next_pri = DEFAULT_PRI + PRI_BIAS; \
1099	\
1100	if (SvOK (callback) && !SvROK (callback)) \
1101	croak ("callback must be undef or of reference type"); \
1102	\
1103	Newz (0, req, 1, aio_cb); \
1104	if (!req) \
1105	croak ("out of memory during aio_req allocation"); \
1106	\
1107	req->callback = newSVsv (callback); \
1108	req->pri = req_pri
1109
1110	#define REQ_SEND \
1111	req_send (req); \
1112	\
1113	if (GIMME_V != G_VOID) \
1114	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1115
1116	MODULE = IO::AIO PACKAGE = IO::AIO	847	MODULE = IO::AIO PACKAGE = IO::AIO
1117		848
1118	PROTOTYPES: ENABLE	849	PROTOTYPES: ENABLE
1119		850
1120	BOOT:	851	BOOT:
1121	{	852	{
		853	static const struct {
		854	const char *name;
		855	IV iv;
		856	} *civ, const_iv[] = {
		857	# define const_niv(name, value) { # name, (IV) value },
		858	# define const_iv(name) { # name, (IV) name },
		859	# define const_eio(name) { # name, (IV) EIO_ ## name },
		860
		861	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		862
		863	const_iv (ENOSYS)
		864	const_iv (EXDEV)
		865	const_iv (EBADR)
		866
		867	const_iv (O_RDONLY)
		868	const_iv (O_WRONLY)
		869	const_iv (O_RDWR)
		870	const_iv (O_CREAT)
		871	const_iv (O_TRUNC)
		872	const_iv (O_EXCL)
		873	const_iv (O_APPEND)
		874
		875	const_iv (O_ASYNC)
		876	const_iv (O_DIRECT)
		877	const_iv (O_NOATIME)
		878
		879	const_iv (O_CLOEXEC)
		880	const_iv (O_NOCTTY)
		881	const_iv (O_NOFOLLOW)
		882	const_iv (O_NONBLOCK)
		883	const_iv (O_EXEC)
		884	const_iv (O_SEARCH)
		885	const_iv (O_DIRECTORY)
		886	const_iv (O_DSYNC)
		887	const_iv (O_RSYNC)
		888	const_iv (O_SYNC)
		889	const_iv (O_TTY_INIT)
		890
		891	const_iv (S_IFIFO)
		892	const_iv (S_IFCHR)
		893	const_iv (S_IFBLK)
		894	const_iv (S_IFLNK)
		895	const_iv (S_IFREG)
		896	const_iv (S_IFDIR)
		897	const_iv (S_IFWHT)
		898	const_iv (S_IFSOCK)
		899	const_iv (S_IFMT)
		900
		901	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		902	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		903	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		904	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		905	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		906	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		907
		908	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		909	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		910	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		911	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		912	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		913
		914	const_iv (ST_RDONLY)
		915	const_iv (ST_NOSUID)
		916	const_iv (ST_NODEV)
		917	const_iv (ST_NOEXEC)
		918	const_iv (ST_SYNCHRONOUS)
		919	const_iv (ST_MANDLOCK)
		920	const_iv (ST_WRITE)
		921	const_iv (ST_APPEND)
		922	const_iv (ST_IMMUTABLE)
		923	const_iv (ST_NOATIME)
		924	const_iv (ST_NODIRATIME)
		925	const_iv (ST_RELATIME)
		926
		927	const_iv (PROT_NONE)
		928	const_iv (PROT_EXEC)
		929	const_iv (PROT_READ)
		930	const_iv (PROT_WRITE)
		931
		932	/*const_iv (MAP_FIXED)*/
		933	const_iv (MAP_PRIVATE)
		934	const_iv (MAP_SHARED)
		935	const_iv (MAP_ANONYMOUS)
		936
		937	/* linuxish */
		938	const_iv (MAP_HUGETLB)
		939	const_iv (MAP_LOCKED)
		940	const_iv (MAP_NORESERVE)
		941	const_iv (MAP_POPULATE)
		942	const_iv (MAP_NONBLOCK)
		943
		944	const_iv (FIEMAP_FLAG_SYNC)
		945	const_iv (FIEMAP_FLAG_XATTR)
		946	const_iv (FIEMAP_FLAGS_COMPAT)
		947	const_iv (FIEMAP_EXTENT_LAST)
		948	const_iv (FIEMAP_EXTENT_UNKNOWN)
		949	const_iv (FIEMAP_EXTENT_DELALLOC)
		950	const_iv (FIEMAP_EXTENT_ENCODED)
		951	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		952	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		953	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		954	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		955	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		956	const_iv (FIEMAP_EXTENT_MERGED)
		957	const_iv (FIEMAP_EXTENT_SHARED)
		958
		959	const_eio (SEEK_SET)
		960	const_eio (SEEK_CUR)
		961	const_eio (SEEK_END)
		962
		963	const_eio (MCL_FUTURE)
		964	const_eio (MCL_CURRENT)
		965
		966	const_eio (MS_ASYNC)
		967	const_eio (MS_INVALIDATE)
		968	const_eio (MS_SYNC)
		969
		970	const_eio (MT_MODIFY)
		971
		972	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		973	const_eio (SYNC_FILE_RANGE_WRITE)
		974	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		975
		976	const_eio (FALLOC_FL_KEEP_SIZE)
		977
		978	const_eio (READDIR_DENTS)
		979	const_eio (READDIR_DIRS_FIRST)
		980	const_eio (READDIR_STAT_ORDER)
		981	const_eio (READDIR_FOUND_UNKNOWN)
		982
		983	const_eio (DT_UNKNOWN)
		984	const_eio (DT_FIFO)
		985	const_eio (DT_CHR)
		986	const_eio (DT_DIR)
		987	const_eio (DT_BLK)
		988	const_eio (DT_REG)
		989	const_eio (DT_LNK)
		990	const_eio (DT_SOCK)
		991	const_eio (DT_WHT)
		992	};
		993
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	994	aio_stash = gv_stashpv ("IO::AIO" , 1);
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	995	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	996	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	997	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1126		998
1127	create_pipe ();	999	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1000	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1129	}
1130		1001
		1002	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1003
		1004	reinit ();
		1005	}
		1006
1131	void	1007	void
1132	min_parallel (int nthreads)	1008	reinit ()
1133	PROTOTYPE: $	1009	PROTOTYPE:
1134		1010
1135	void	1011	void
1136	max_parallel (int nthreads)	1012	max_poll_reqs (unsigned int nreqs)
1137	PROTOTYPE: $
1138
1139	int
1140	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	1013	PROTOTYPE: $
1142	CODE:	1014	CODE:
1143	RETVAL = max_outstanding;	1015	eio_set_max_poll_reqs (nreqs);
		1016
		1017	void
		1018	max_poll_time (double nseconds)
		1019	PROTOTYPE: $
		1020	CODE:
		1021	eio_set_max_poll_time (nseconds);
		1022
		1023	void
		1024	min_parallel (unsigned int nthreads)
		1025	PROTOTYPE: $
		1026	CODE:
		1027	eio_set_min_parallel (nthreads);
		1028
		1029	void
		1030	max_parallel (unsigned int nthreads)
		1031	PROTOTYPE: $
		1032	CODE:
		1033	eio_set_max_parallel (nthreads);
		1034
		1035	void
		1036	max_idle (unsigned int nthreads)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_max_idle (nthreads);
		1040
		1041	void
		1042	idle_timeout (unsigned int seconds)
		1043	PROTOTYPE: $
		1044	CODE:
		1045	eio_set_idle_timeout (seconds);
		1046
		1047	void
		1048	max_outstanding (unsigned int maxreqs)
		1049	PROTOTYPE: $
		1050	CODE:
1144	max_outstanding = maxreqs;	1051	max_outstanding = maxreqs;
1145	OUTPUT:
1146	RETVAL
1147		1052
1148	void	1053	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1054	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	int flags
1152	int mode
1153	SV * callback
1154	PROTOTYPE: $$$;$
1155	PPCODE:	1055	PPCODE:
1156	{	1056	{
1157	dREQ;	1057	dREQ;
1158		1058
1159	req->type = REQ_OPEN;	1059	req->type = EIO_WD_OPEN;
1160	req->data = newSVsv (pathname);	1060	req_set_path1 (req, pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);
1162	req->fd = flags;
1163	req->mode = mode;
1164		1061
1165	REQ_SEND;	1062	REQ_SEND;
1166	}	1063	}
1167		1064
1168	void	1065	void
		1066	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1067	PPCODE:
		1068	{
		1069	dREQ;
		1070
		1071	req->type = EIO_OPEN;
		1072	req_set_path1 (req, pathname);
		1073	req->int1 = flags;
		1074	req->int2 = mode;
		1075
		1076	REQ_SEND;
		1077	}
		1078
		1079	void
1169	aio_close (fh,callback=&PL_sv_undef)	1080	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1170	SV * fh
1171	SV * callback
1172	PROTOTYPE: $;$
1173	ALIAS:	1081	ALIAS:
1174	aio_close = REQ_CLOSE
1175	aio_fsync = REQ_FSYNC	1082	aio_fsync = EIO_FSYNC
1176	aio_fdatasync = REQ_FDATASYNC	1083	aio_fdatasync = EIO_FDATASYNC
		1084	aio_syncfs = EIO_SYNCFS
1177	PPCODE:	1085	PPCODE:
1178	{	1086	{
		1087	int fd = s_fileno_croak (fh, 0);
1179	dREQ;	1088	dREQ;
1180		1089
1181	req->type = ix;	1090	req->type = ix;
1182	req->fh = newSVsv (fh);	1091	req->sv1 = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1092	req->int1 = fd;
1184		1093
1185	REQ_SEND (req);	1094	REQ_SEND;
1186	}	1095	}
1187		1096
1188	void	1097	void
		1098	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1099	PPCODE:
		1100	{
		1101	int fd = s_fileno_croak (fh, 0);
		1102	dREQ;
		1103
		1104	req->type = EIO_SYNC_FILE_RANGE;
		1105	req->sv1 = newSVsv (fh);
		1106	req->int1 = fd;
		1107	req->offs = offset;
		1108	req->size = nbytes;
		1109	req->int2 = flags;
		1110
		1111	REQ_SEND;
		1112	}
		1113
		1114	void
		1115	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1116	PPCODE:
		1117	{
		1118	int fd = s_fileno_croak (fh, 0);
		1119	dREQ;
		1120
		1121	req->type = EIO_FALLOCATE;
		1122	req->sv1 = newSVsv (fh);
		1123	req->int1 = fd;
		1124	req->int2 = mode;
		1125	req->offs = offset;
		1126	req->size = len;
		1127
		1128	REQ_SEND;
		1129	}
		1130
		1131	void
		1132	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1133	PPCODE:
		1134	{
		1135	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1136	int fd = s_fileno_croak (fh, 0);
		1137	dREQ;
		1138
		1139	if (expect_false (close_fd < 0))
		1140	{
		1141	int pipefd [2];
		1142
		1143	if (
		1144	#ifdef _WIN32
		1145	_pipe (pipefd, 1, _O_BINARY) < 0
		1146	#else
		1147	pipe (pipefd) < 0
		1148	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1149	#endif
		1150	|| close (pipefd [1]) < 0
		1151	)
		1152	abort (); /*D*/
		1153
		1154	close_fd = pipefd [0];
		1155	}
		1156
		1157	req->type = EIO_DUP2;
		1158	req->int1 = close_fd;
		1159	req->sv2 = newSVsv (fh);
		1160	req->int2 = fd;
		1161
		1162	REQ_SEND;
		1163	}
		1164
		1165	void
		1166	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1167	PPCODE:
		1168	{
		1169	STRLEN svlen;
		1170	int fd = s_fileno_croak (fh, 0);
		1171	dREQ;
		1172
		1173	req->type = EIO_SEEK;
		1174	req->sv1 = newSVsv (fh);
		1175	req->int1 = fd;
		1176	req->offs = SvVAL64 (offset);
		1177	req->int2 = whence;
		1178
		1179	REQ_SEND;
		1180	}
		1181
		1182	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1183	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1190	SV * fh
1191	UV offset
1192	UV length
1193	SV * data
1194	UV dataoffset
1195	SV * callback
1196	ALIAS:	1184	ALIAS:
1197	aio_read = REQ_READ	1185	aio_read = EIO_READ
1198	aio_write = REQ_WRITE	1186	aio_write = EIO_WRITE
1199	PROTOTYPE: $$$$$;$
1200	PPCODE:	1187	PPCODE:
1201	{	1188	{
1202	aio_req req;
1203	STRLEN svlen;	1189	STRLEN svlen;
		1190	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1204	char *svptr = SvPVbyte (data, svlen);	1191	char *svptr = SvPVbyte (data, svlen);
1205		1192	UV len = SvUV (length);
1206	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);
1208		1193
1209	if (dataoffset < 0)	1194	if (dataoffset < 0)
1210	dataoffset += svlen;	1195	dataoffset += svlen;
1211		1196
1212	if (dataoffset < 0 || dataoffset > svlen)	1197	if (dataoffset < 0 || dataoffset > svlen)
1213	croak ("data offset outside of string");	1198	croak ("dataoffset outside of data scalar");
1214		1199
1215	if (ix == REQ_WRITE)	1200	if (ix == EIO_WRITE)
1216	{	1201	{
1217	/* write: check length and adjust. */	1202	/* write: check length and adjust. */
1218	if (length < 0 || length + dataoffset > svlen)	1203	if (!SvOK (length) || len + dataoffset > svlen)
1219	length = svlen - dataoffset;	1204	len = svlen - dataoffset;
1220	}	1205	}
1221	else	1206	else
1222	{	1207	{
1223	/* read: grow scalar as necessary */	1208	/* read: check type and grow scalar as necessary */
		1209	SvUPGRADE (data, SVt_PV);
1224	svptr = SvGROW (data, length + dataoffset);	1210	svptr = SvGROW (data, len + dataoffset + 1);
1225	}	1211	}
1226
1227	if (length < 0)
1228	croak ("length must not be negative");
1229		1212
1230	{	1213	{
1231	dREQ;	1214	dREQ;
1232		1215
1233	req->type = ix;	1216	req->type = ix;
1234	req->fh = newSVsv (fh);	1217	req->sv1 = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1218	req->int1 = fd;
1236	: IoOFP (sv_2io (fh)));	1219	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237	req->offset = offset;	1220	req->size = len;
1238	req->length = length;
1239	req->data = SvREFCNT_inc (data);	1221	req->sv2 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	1222	req->ptr2 = (char *)svptr + dataoffset;
		1223	req->stroffset = dataoffset;
1241		1224
1242	if (!SvREADONLY (data))	1225	if (!SvREADONLY (data))
1243	{	1226	{
1244	SvREADONLY_on (data);	1227	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	1228	req->flags |= FLAG_SV2_RO_OFF;
1246	}	1229	}
1247		1230
1248	REQ_SEND;	1231	REQ_SEND;
1249	}	1232	}
1250	}	1233	}
1251		1234
1252	void	1235	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1236	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1254	SV * out_fh	1237	ALIAS:
1255	SV * in_fh	1238	aio_readlink = EIO_READLINK
1256	UV in_offset	1239	aio_realpath = EIO_REALPATH
1257	UV length
1258	SV * callback
1259	PROTOTYPE: $$$$;$
1260	PPCODE:	1240	PPCODE:
1261	{	1241	{
		1242	dREQ;
		1243
		1244	req->type = ix;
		1245	req_set_path1 (req, pathname);
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1252	PPCODE:
		1253	{
		1254	int ifd = s_fileno_croak (in_fh , 0);
		1255	int ofd = s_fileno_croak (out_fh, 1);
1262	dREQ;	1256	dREQ;
1263		1257
1264	req->type = REQ_SENDFILE;	1258	req->type = EIO_SENDFILE;
1265	req->fh = newSVsv (out_fh);	1259	req->sv1 = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1260	req->int1 = ofd;
1267	req->fh2 = newSVsv (in_fh);	1261	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1262	req->int2 = ifd;
1269	req->offset = in_offset;	1263	req->offs = in_offset;
1270	req->length = length;	1264	req->size = length;
1271		1265
1272	REQ_SEND;	1266	REQ_SEND;
1273	}	1267	}
1274		1268
1275	void	1269	void
1276	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1270	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1277	SV * fh
1278	UV offset
1279	IV length
1280	SV * callback
1281	PROTOTYPE: $$$;$
1282	PPCODE:	1271	PPCODE:
1283	{	1272	{
		1273	int fd = s_fileno_croak (fh, 0);
1284	dREQ;	1274	dREQ;
1285		1275
1286	req->type = REQ_READAHEAD;	1276	req->type = EIO_READAHEAD;
1287	req->fh = newSVsv (fh);	1277	req->sv1 = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1278	req->int1 = fd;
1289	req->offset = offset;	1279	req->offs = offset;
1290	req->length = length;	1280	req->size = length;
1291		1281
1292	REQ_SEND;	1282	REQ_SEND;
1293	}	1283	}
1294		1284
1295	void	1285	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	1286	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1297	SV * fh_or_path
1298	SV * callback
1299	ALIAS:	1287	ALIAS:
1300	aio_stat = REQ_STAT	1288	aio_stat = EIO_STAT
1301	aio_lstat = REQ_LSTAT	1289	aio_lstat = EIO_LSTAT
		1290	aio_statvfs = EIO_STATVFS
1302	PPCODE:	1291	PPCODE:
1303	{	1292	{
1304	dREQ;	1293	dREQ;
1305		1294
1306	New (0, req->statdata, 1, Stat_t);	1295	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1307	if (!req->statdata)
1308	{
1309	req_free (req);
1310	croak ("out of memory during aio_req->statdata allocation");
1311	}
1312
1313	if (SvPOK (fh_or_path))
1314	{
1315	req->type = ix;
1316	req->data = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);
1318	}
1319	else
1320	{
1321	req->type = REQ_FSTAT;
1322	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}
1325		1296
1326	REQ_SEND;	1297	REQ_SEND;
1327	}	1298	}
1328		1299
		1300	UV
		1301	major (UV dev)
		1302	ALIAS:
		1303	minor = 1
		1304	CODE:
		1305	RETVAL = ix ? major (dev) : minor (dev);
		1306	OUTPUT:
		1307	RETVAL
		1308
		1309	UV
		1310	makedev (UV maj, UV min)
		1311	CODE:
		1312	RETVAL = makedev (maj, min);
		1313	OUTPUT:
		1314	RETVAL
		1315
1329	void	1316	void
		1317	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1318	PPCODE:
		1319	{
		1320	dREQ;
		1321
		1322	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1323	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1324	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1325
		1326	REQ_SEND;
		1327	}
		1328
		1329	void
		1330	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1331	PPCODE:
		1332	{
		1333	dREQ;
		1334
		1335	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1336	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1337
		1338	REQ_SEND;
		1339	}
		1340
		1341	void
		1342	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1343	PPCODE:
		1344	{
		1345	dREQ;
		1346
		1347	req->int2 = mode;
		1348	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
		1354	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1360	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1361	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1368	PPCODE:
		1369	{
		1370	dREQ;
		1371
		1372	req->type = EIO_READDIR;
		1373	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1374
		1375	if (flags & EIO_READDIR_DENTS)
		1376	req->int1 |= EIO_READDIR_CUSTOM2;
		1377
		1378	req_set_path1 (req, pathname);
		1379
		1380	REQ_SEND;
		1381	}
		1382
		1383	void
		1384	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388
		1389	req->type = EIO_MKDIR;
		1390	req->int2 = mode;
		1391	req_set_path1 (req, pathname);
		1392
		1393	REQ_SEND;
		1394	}
		1395
		1396	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	1397	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1331	SV * pathname
1332	SV * callback
1333	ALIAS:	1398	ALIAS:
1334	aio_unlink = REQ_UNLINK	1399	aio_unlink = EIO_UNLINK
1335	aio_rmdir = REQ_RMDIR	1400	aio_rmdir = EIO_RMDIR
1336	aio_readdir = REQ_READDIR	1401	aio_readdir = EIO_READDIR
1337	PPCODE:	1402	PPCODE:
1338	{	1403	{
1339	dREQ;	1404	dREQ;
1340		1405
1341	req->type = ix;	1406	req->type = ix;
1342	req->data = newSVsv (pathname);	1407	req_set_path1 (req, pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	1408
1344
1345	REQ_SEND;	1409	REQ_SEND;
1346	}	1410	}
1347		1411
1348	void	1412	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1413	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1350	SV * oldpath
1351	SV * newpath
1352	SV * callback
1353	ALIAS:	1414	ALIAS:
1354	aio_link = REQ_LINK	1415	aio_link = EIO_LINK
1355	aio_symlink = REQ_SYMLINK	1416	aio_symlink = EIO_SYMLINK
1356	aio_rename = REQ_RENAME	1417	aio_rename = EIO_RENAME
1357	PPCODE:	1418	PPCODE:
1358	{	1419	{
		1420	eio_wd wd2 = 0;
1359	dREQ;	1421	dREQ;
1360		1422
1361	req->type = ix;	1423	req->type = ix;
1362	req->fh = newSVsv (oldpath);	1424	req_set_path1 (req, oldpath);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	1425	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1364	req->data = newSVsv (newpath);	1426	req->int3 = (long)wd2;
1365	req->dataptr = SvPVbyte_nolen (req->data);
1366		1427
1367	REQ_SEND;	1428	REQ_SEND;
1368	}	1429	}
1369		1430
1370	void	1431	void
1371	aio_busy (delay,callback=&PL_sv_undef)	1432	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1372	double delay
1373	SV * callback
1374	PPCODE:	1433	PPCODE:
1375	{	1434	{
1376	dREQ;	1435	dREQ;
1377		1436
1378	req->type = REQ_BUSY;	1437	req->type = EIO_MKNOD;
1379	req->fd = delay < 0. ? 0 : delay;	1438	req->int2 = (mode_t)mode;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1439	req->offs = dev;
1381		1440	req_set_path1 (req, pathname);
		1441
1382	REQ_SEND;	1442	REQ_SEND;
1383	}	1443	}
1384		1444
1385	void	1445	void
1386	aio_group (callback=&PL_sv_undef)	1446	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1387	SV * callback	1447	ALIAS:
1388	PROTOTYPE: ;$	1448	aio_mtouch = EIO_MTOUCH
		1449	aio_msync = EIO_MSYNC
1389	PPCODE:	1450	PPCODE:
1390	{	1451	{
		1452	STRLEN svlen;
		1453	char *svptr = SvPVbyte (data, svlen);
		1454	UV len = SvUV (length);
		1455
		1456	if (offset < 0)
		1457	offset += svlen;
		1458
		1459	if (offset < 0 || offset > svlen)
		1460	croak ("offset outside of scalar");
		1461
		1462	if (!SvOK (length) || len + offset > svlen)
		1463	len = svlen - offset;
		1464
		1465	{
		1466	dREQ;
		1467
		1468	req->type = ix;
		1469	req->sv2 = SvREFCNT_inc (data);
		1470	req->ptr2 = (char *)svptr + offset;
		1471	req->size = len;
		1472	req->int1 = flags;
		1473
		1474	REQ_SEND;
		1475	}
		1476	}
		1477
		1478	void
		1479	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1480	PPCODE:
		1481	{
		1482	STRLEN svlen;
		1483	char *svptr = SvPVbyte (data, svlen);
		1484	UV len = SvUV (length);
		1485
		1486	if (offset < 0)
		1487	offset += svlen;
		1488
		1489	if (offset < 0 || offset > svlen)
		1490	croak ("offset outside of scalar");
		1491
		1492	if (!SvOK (length) || len + offset > svlen)
		1493	len = svlen - offset;
		1494
		1495	{
		1496	dREQ;
		1497
		1498	req->type = EIO_MLOCK;
		1499	req->sv2 = SvREFCNT_inc (data);
		1500	req->ptr2 = (char *)svptr + offset;
		1501	req->size = len;
		1502
		1503	REQ_SEND;
		1504	}
		1505	}
		1506
		1507	void
		1508	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1509	PPCODE:
		1510	{
		1511	dREQ;
		1512
		1513	req->type = EIO_MLOCKALL;
		1514	req->int1 = flags;
		1515
		1516	REQ_SEND;
		1517	}
		1518
		1519	void
		1520	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1521	PPCODE:
		1522	{
		1523	int fd = s_fileno_croak (fh, 0);
1391	dREQ;	1524	dREQ;
1392		1525
1393	req->type = REQ_GROUP;	1526	req->type = EIO_CUSTOM;
1394	req_send (req);	1527	req->sv1 = newSVsv (fh);
		1528	req->int1 = fd;
1395		1529
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1530	req->feed = fiemap;
1397	}	1531	/* keep our fingers crossed that the next two types are 64 bit */
		1532	req->offs = start;
		1533	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1534	req->int2 = flags;
		1535	req->int3 = SvOK (count) ? SvIV (count) : -1;
1398		1536
		1537	REQ_SEND;
		1538	}
		1539
1399	void	1540	void
1400	aio_nop (callback=&PL_sv_undef)	1541	aio_busy (double delay, SV *callback=&PL_sv_undef)
1401	SV * callback
1402	PPCODE:	1542	PPCODE:
1403	{	1543	{
1404	dREQ;	1544	dREQ;
1405		1545
		1546	req->type = EIO_BUSY;
		1547	req->nv1 = delay < 0. ? 0. : delay;
		1548
		1549	REQ_SEND;
		1550	}
		1551
		1552	void
		1553	aio_group (SV *callback=&PL_sv_undef)
		1554	PPCODE:
		1555	{
		1556	dREQ;
		1557
1406	req->type = REQ_NOP;	1558	req->type = EIO_GROUP;
		1559
		1560	req_submit (req);
		1561	XPUSHs (req_sv (req, aio_grp_stash));
		1562	}
		1563
		1564	void
		1565	aio_nop (SV *callback=&PL_sv_undef)
		1566	ALIAS:
		1567	aio_nop = EIO_NOP
		1568	aio_sync = EIO_SYNC
		1569	PPCODE:
		1570	{
		1571	dREQ;
		1572
		1573	req->type = ix;
1407		1574
1408	REQ_SEND;	1575	REQ_SEND;
1409	}	1576	}
1410		1577
1411	int	1578	int
1412	aioreq_pri (int pri = 0)	1579	aioreq_pri (int pri = 0)
1413	PROTOTYPE: ;$
1414	CODE:	1580	CODE:
1415	RETVAL = next_pri - PRI_BIAS;	1581	RETVAL = next_pri;
1416	if (items > 0)	1582	if (items > 0)
1417	{	1583	{
1418	if (pri < PRI_MIN) pri = PRI_MIN;	1584	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1419	if (pri > PRI_MAX) pri = PRI_MAX;	1585	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1420	next_pri = pri + PRI_BIAS;	1586	next_pri = pri;
1421	}	1587	}
1422	OUTPUT:	1588	OUTPUT:
1423	RETVAL	1589	RETVAL
1424		1590
1425	void	1591	void
1426	aioreq_nice (int nice = 0)	1592	aioreq_nice (int nice = 0)
1427	CODE:	1593	CODE:
1428	nice = next_pri - nice;	1594	nice = next_pri - nice;
1429	if (nice < PRI_MIN) nice = PRI_MIN;	1595	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1430	if (nice > PRI_MAX) nice = PRI_MAX;	1596	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1431	next_pri = nice + PRI_BIAS;	1597	next_pri = nice;
1432		1598
1433	void	1599	void
1434	flush ()	1600	flush ()
		1601	CODE:
		1602	while (eio_nreqs ())
		1603	{
		1604	poll_wait ();
		1605	poll_cb ();
		1606	}
		1607
		1608	int
		1609	poll ()
		1610	CODE:
		1611	poll_wait ();
		1612	RETVAL = poll_cb ();
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	int
		1617	poll_fileno ()
		1618	CODE:
		1619	RETVAL = s_epipe_fd (&respipe);
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623	int
		1624	poll_cb (...)
1435	PROTOTYPE:	1625	PROTOTYPE:
1436	CODE:	1626	CODE:
1437	while (nreqs)
1438	{
1439	poll_wait ();
1440	poll_cb (0);	1627	RETVAL = poll_cb ();
1441	}
1442
1443	void
1444	poll()
1445	PROTOTYPE:
1446	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();
1450	poll_cb (0);
1451	}
1452
1453	int
1454	poll_fileno()
1455	PROTOTYPE:
1456	CODE:
1457	RETVAL = respipe [0];
1458	OUTPUT:	1628	OUTPUT:
1459	RETVAL	1629	RETVAL
1460		1630
		1631	void
		1632	poll_wait ()
		1633	CODE:
		1634	poll_wait ();
		1635
1461	int	1636	int
1462	poll_cb(...)	1637	nreqs ()
1463	PROTOTYPE:
1464	CODE:	1638	CODE:
1465	RETVAL = poll_cb (0);	1639	RETVAL = eio_nreqs ();
1466	OUTPUT:	1640	OUTPUT:
1467	RETVAL	1641	RETVAL
1468		1642
1469	int	1643	int
1470	poll_some(int max = 0)	1644	nready ()
1471	PROTOTYPE: $
1472	CODE:	1645	CODE:
1473	RETVAL = poll_cb (max);	1646	RETVAL = eio_nready ();
1474	OUTPUT:	1647	OUTPUT:
1475	RETVAL	1648	RETVAL
1476		1649
1477	void	1650	int
1478	poll_wait()	1651	npending ()
1479	PROTOTYPE:
1480	CODE:	1652	CODE:
1481	if (nreqs)	1653	RETVAL = eio_npending ();
1482	poll_wait ();
1483
1484	int
1485	nreqs()
1486	PROTOTYPE:
1487	CODE:
1488	RETVAL = nreqs;
1489	OUTPUT:	1654	OUTPUT:
1490	RETVAL	1655	RETVAL
1491		1656
1492	int	1657	int
1493	nready()	1658	nthreads ()
1494	PROTOTYPE:
1495	CODE:	1659	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1660	RETVAL = eio_nthreads ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1661	OUTPUT:
1500	RETVAL	1662	RETVAL
1501		1663
1502	int	1664	int
1503	npending()	1665	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1504	PROTOTYPE:	1666	CODE:
		1667	RETVAL = posix_fadvise (fh, offset, length, advice);
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	IV
		1672	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1673	CODE:
		1674	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1675	OUTPUT:
		1676	RETVAL
		1677
		1678	void
		1679	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1680	PPCODE:
		1681	sv_unmagic (scalar, MMAP_MAGIC);
		1682	{
		1683	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1684	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1685	if (addr == (void *)-1)
		1686	XSRETURN_NO;
		1687
		1688	sv_force_normal (scalar);
		1689
		1690	/* we store the length in mg_obj, as namlen is I32 :/ */
		1691	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1692	->mg_obj = (SV *)length;
		1693
		1694	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1695
		1696	if (!(prot & PROT_WRITE))
		1697	SvREADONLY_on (scalar);
		1698
		1699	if (SvLEN (scalar))
		1700	Safefree (SvPVX (scalar));
		1701
		1702	SvPVX (scalar) = (char *)addr;
		1703	SvCUR_set (scalar, length);
		1704	SvLEN_set (scalar, 0);
		1705	SvPOK_only (scalar);
		1706
		1707	XSRETURN_YES;
		1708	}
		1709
		1710	void
		1711	munmap (SV *scalar)
1505	CODE:	1712	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);	1713	sv_unmagic (scalar, MMAP_MAGIC);
1507	RETVAL = npending;	1714
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);	1715	int
		1716	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1717	ALIAS:
		1718	mprotect = 1
		1719	CODE:
		1720	{
		1721	STRLEN svlen;
		1722	void *addr = SvPVbyte (scalar, svlen);
		1723	size_t len = SvUV (length);
		1724
		1725	if (offset < 0)
		1726	offset += svlen;
		1727
		1728	if (offset < 0 || offset > svlen)
		1729	croak ("offset outside of scalar");
		1730
		1731	if (!SvOK (length) || len + offset > svlen)
		1732	len = svlen - offset;
		1733
		1734	addr = (void *)(((intptr_t)addr) + offset);
		1735	eio_page_align (&addr, &len);
		1736
		1737	switch (ix)
		1738	{
		1739	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1740	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1741	}
		1742	}
1509	OUTPUT:	1743	OUTPUT:
1510	RETVAL	1744	RETVAL
		1745
		1746	int
		1747	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1748	CODE:
		1749	{
		1750	STRLEN svlen;
		1751	void *addr = SvPVbyte (scalar, svlen);
		1752	size_t len = SvUV (length);
		1753
		1754	if (offset < 0)
		1755	offset += svlen;
		1756
		1757	if (offset < 0 || offset > svlen)
		1758	croak ("offset outside of scalar");
		1759
		1760	if (!SvOK (length) || len + offset > svlen)
		1761	len = svlen - offset;
		1762
		1763	addr = (void *)(((intptr_t)addr) + offset);
		1764	eio_page_align (&addr, &len);
		1765	#if _POSIX_MEMLOCK_RANGE
		1766	RETVAL = munlock (addr, len);
		1767	#else
		1768	RETVAL = ((errno = ENOSYS), -1);
		1769	#endif
		1770	}
		1771	OUTPUT:
		1772	RETVAL
		1773
		1774	int
		1775	munlockall ()
		1776	CODE:
		1777	#if _POSIX_MEMLOCK
		1778	munlockall ();
		1779	#else
		1780	RETVAL = -1;
		1781	errno = ENOSYS;
		1782	#endif
		1783	OUTPUT:
		1784	RETVAL
		1785
		1786	void _on_next_submit (SV *cb)
		1787	CODE:
		1788	SvREFCNT_dec (on_next_submit);
		1789	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1511		1790
1512	PROTOTYPES: DISABLE	1791	PROTOTYPES: DISABLE
		1792
		1793	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1794
		1795	BOOT:
		1796	{
		1797	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1798	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1799	}
		1800
		1801	void
		1802	DESTROY (SV *self)
		1803	CODE:
		1804	{
		1805	aio_wd wd = SvAIO_WD (self);
		1806	#if HAVE_AT
		1807	{
		1808	SV *callback = &PL_sv_undef;
		1809	dREQ; /* clobbers next_pri :/ */
		1810	next_pri = req->pri; /* restore next_pri */
		1811	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1812	req->type = EIO_WD_CLOSE;
		1813	req->wd = wd;
		1814	REQ_SEND;
		1815	}
		1816	#else
		1817	eio_wd_close_sync (wd);
		1818	#endif
		1819	}
1513		1820
1514	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1821	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515		1822
1516	void	1823	void
1517	cancel (aio_req_ornot req)	1824	cancel (aio_req_ornot req)
1518	CODE:	1825	CODE:
1519	req_cancel (req);	1826	eio_cancel (req);
1520		1827
1521	void	1828	void
1522	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1829	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1523	CODE:	1830	PPCODE:
		1831	{
		1832	if (GIMME_V != G_VOID)
		1833	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1834
		1835	if (items > 1)
		1836	{
		1837	SV *cb_cv =get_cb (callback);
		1838
1524	SvREFCNT_dec (req->callback);	1839	SvREFCNT_dec (req->callback);
1525	req->callback = newSVsv (callback);	1840	req->callback = SvREFCNT_inc (cb_cv);
		1841	}
		1842	}
1526		1843
1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1844	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528		1845
1529	void	1846	void
1530	add (aio_req grp, ...)	1847	add (aio_req grp, ...)
1531	PPCODE:	1848	PPCODE:
1532	{	1849	{
1533	int i;	1850	int i;
1534	aio_req req;
1535		1851
1536	if (grp->fd == 2)	1852	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1853	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		1854
1539	for (i = 1; i < items; ++i )	1855	for (i = 1; i < items; ++i )
1540	{	1856	{
		1857	aio_req req;
		1858
1541	if (GIMME_V != G_VOID)	1859	if (GIMME_V != G_VOID)
1542	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1860	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543		1861
1544	req = SvAIO_REQ (ST (i));	1862	req = SvAIO_REQ (ST (i));
1545		1863
1546	if (req)	1864	if (req)
1547	{	1865	eio_grp_add (grp, req);
1548	++grp->length;
1549	req->grp = grp;
1550
1551	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;
1553
1554	if (grp->grp_first)
1555	grp->grp_first->grp_prev = req;
1556
1557	grp->grp_first = req;
1558	}
1559	}	1866	}
1560	}	1867	}
1561		1868
1562	void	1869	void
1563	cancel_subs (aio_req_ornot req)	1870	cancel_subs (aio_req_ornot req)
…		…
1572	AV *av;	1879	AV *av;
1573		1880
1574	grp->errorno = errno;	1881	grp->errorno = errno;
1575		1882
1576	av = newAV ();	1883	av = newAV ();
		1884	av_extend (av, items - 1);
1577		1885
1578	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	1887	av_push (av, newSVsv (ST (i)));
1580		1888
1581	SvREFCNT_dec (grp->data);	1889	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	1890	grp->sv1 = (SV *)av;
1583	}	1891	}
1584		1892
1585	void	1893	void
1586	errno (aio_req grp, int errorno = errno)	1894	errno (aio_req grp, int errorno = errno)
1587	CODE:	1895	CODE:
1588	grp->errorno = errorno;	1896	grp->errorno = errorno;
1589		1897
1590	void	1898	void
1591	limit (aio_req grp, int limit)	1899	limit (aio_req grp, int limit)
1592	CODE:	1900	CODE:
1593	grp->fd2 = limit;	1901	eio_grp_limit (grp, limit);
1594	aio_grp_feed (grp);
1595		1902
1596	void	1903	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	1904	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	1905	CODE:
1599	{	1906	{
1600	SvREFCNT_dec (grp->fh2);	1907	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	1908	grp->sv2 = newSVsv (callback);
		1909	grp->feed = aio_grp_feed;
1602		1910
1603	if (grp->fd2 <= 0)	1911	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	1912	grp->int2 = 2;
1605		1913
1606	aio_grp_feed (grp);	1914	eio_grp_limit (grp, grp->int2);
1607	}	1915	}
1608		1916

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