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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.85 by root, Sat Oct 28 23:32:29 2006 UTC vs.
Revision 1.211 by root, Sat Apr 7 00:50:33 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__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/fiemap.h>
		28	# define HAVE_FIEMAP 1
		29	# endif
		30	#endif
		31
		32	/* perl namespace pollution */
		33	#undef VERSION
		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>
35	# include <sys/sendfile.h>	81	#include <sys/select.h>
36	# elif __freebsd	82	#include <unistd.h>
37	# include <sys/socket.h>	83	#include <utime.h>
38	# include <sys/uio.h>	84	#include <signal.h>
39	# elif __hpux	85
40	# include <sys/socket.h>	86	#define EIO_STRUCT_STAT Stat_t
41	# elif __solaris /* not yet */	87
42	# include <sys/sendfile.h>	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	#if !HAVE_POSIX_FADVISE
		129	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		130	#endif
		131
		132	#if !HAVE_POSIX_MADVISE
		133	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		134	#endif
		135
		136	#ifndef MAP_ANONYMOUS
		137	# ifdef MAP_ANON
		138	# define MAP_ANONYMOUS MAP_ANON
43	# else	139	# else
44	# error sendfile support requested but not available	140	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	141	# endif
46	#endif	142	#endif
47		143
48	/* number of seconds after which idle threads exit */	144	/* defines all sorts of constants to 0 unless they are already defined */
49	#define IDLE_TIMEOUT 10	145	#include "def0.h"
50		146
51	/* used for struct dirent, AIX doesn't provide it */	147	#ifndef makedev
52	#ifndef NAME_MAX	148	# define makedev(maj,min) (((maj) << 8) | (min))
53	# define NAME_MAX 4096
54	#endif	149	#endif
55		150	#ifndef major
56	#ifndef PTHREAD_STACK_MIN	151	# define major(dev) ((dev) >> 8)
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif	152	#endif
		153	#ifndef minor
		154	# define minor(dev) ((dev) & 0xff)
		155	#endif
60		156
61	#if __ia64	157	#ifndef PAGESIZE
62	# define STACKSIZE 65536	158	# define PAGESIZE sysconf (_SC_PAGESIZE)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	159	#endif
64	# define STACKSIZE PTHREAD_STACK_MIN	160
		161	/*****************************************************************************/
		162
		163	static void
		164	fiemap (eio_req *req)
		165	{
		166	req->result = -1;
		167
		168	#if HAVE_FIEMAP
		169	int count = req->int3;
		170
		171	/* heuristic: first try with 64 extents if we don't know how many, */
		172	/* as most files have (hopefully) fewer than this many extents */
		173	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		174	if (count < 0)
		175	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		176
		177	for (;;)
		178	{
		179	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		180	errno = ENOMEM;
		181	if (!fiemap)
		182	return;
		183
		184	req->ptr1 = fiemap;
		185	req->flags |= EIO_FLAG_PTR1_FREE;
		186
		187	fiemap->fm_start = req->offs;
		188	fiemap->fm_length = req->size;
		189	fiemap->fm_flags = req->int2;
		190	fiemap->fm_extent_count = count;
		191
		192	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		193	return;
		194
		195	if (req->int3 >= 0)
		196	break; /* when not autosizing we are done */
		197
		198	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		199	break; /* autosizing successful, we are done */
		200
		201	fiemap->fm_flags = req->int2;
		202	fiemap->fm_extent_count = 0;
		203
		204	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		205	return;
		206
		207	count = fiemap->fm_mapped_extents;
		208
		209	free (fiemap);
		210	}
		211
		212	req->result = 0;
		213
65	#else	214	#else
66	# define STACKSIZE 16384	215	errno = ENOSYS;
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	216	#endif
79	#endif	217	}
80		218
81	/* buffer size for various temporary buffers */	219	/*****************************************************************************/
82	#define AIO_BUFSIZE 65536
83
84	#define dBUF \
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91		220
92	enum {	221	enum {
93	REQ_QUIT,	222	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};	223	};
105		224
106	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"
108
109	typedef struct aio_cb
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;
114	SV *fh, *fh2;
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;
122	int type;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126
127	unsigned char flags;
128	unsigned char pri;
129
130	SV *self; /* the perl counterpart of this request, if any */
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132	} aio_cb;
133
134	enum {
135	FLAG_CANCELLED = 0x01,
136	};
137
138	typedef aio_cb *aio_req;	225	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	226	typedef eio_req *aio_req_ornot;
		227	typedef eio_wd aio_wd;
140		228
141	enum {	229	static SV *on_next_submit;
142	PRI_MIN = -4,	230	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	231	static int max_outstanding;
144		232
145	DEFAULT_PRI = 0,	233	static s_epipe respipe;
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		234
150	#define AIO_TICKS ((1000000 + 1023) >> 10)
151
152	static unsigned int max_poll_time = 0;
153	static unsigned int max_poll_reqs = 0;
154
155	/* calculcate time difference in ~1/AIO_TICKS of a second */
156	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
157	{
158	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
159	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
160	}
161
162	static int next_pri = DEFAULT_PRI + PRI_BIAS;
163
164	static unsigned int started, idle, wanted;
165
166	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
167	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
168	#else
169	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
170	#endif
171
172	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
173	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
174
175	/* worker threads management */
176	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
177
178	typedef struct worker {
179	/* locked by wrklock */
180	struct worker *prev, *next;
181
182	pthread_t tid;
183
184	/* locked by reslock, reqlock or wrklock */
185	aio_req req; /* currently processed request */
186	void *dbuf;
187	DIR *dirp;
188	} worker;
189
190	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
191
192	static void worker_clear (worker *wrk)
193	{
194	if (wrk->dirp)
195	{
196	closedir (wrk->dirp);
197	wrk->dirp = 0;
198	}
199
200	if (wrk->dbuf)
201	{
202	free (wrk->dbuf);
203	wrk->dbuf = 0;
204	}
205	}
206
207	static void worker_free (worker *wrk)
208	{
209	wrk->next->prev = wrk->prev;
210	wrk->prev->next = wrk->next;
211
212	free (wrk);
213	}
214
215	static volatile unsigned int nreqs, nready, npending;
216	static volatile unsigned int max_idle = 4;
217	static volatile unsigned int max_outstanding = 0xffffffff;
218	static int respipe [2];
219
220	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
221	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
222	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
223
224	#if WORDACCESS_UNSAFE
225
226	static unsigned int get_nready ()
227	{
228	unsigned int retval;
229
230	LOCK (reqlock);
231	retval = nready;
232	UNLOCK (reqlock);
233
234	return retval;
235	}
236
237	static unsigned int get_npending ()
238	{
239	unsigned int retval;
240
241	LOCK (reslock);
242	retval = npending;
243	UNLOCK (reslock);
244
245	return retval;
246	}
247
248	static unsigned int get_nthreads ()
249	{
250	unsigned int retval;
251
252	LOCK (wrklock);
253	retval = started;
254	UNLOCK (wrklock);
255
256	return retval;
257	}
258
259	#else
260
261	# define get_nready() nready
262	# define get_npending() npending
263	# define get_nthreads() started
264
265	#endif
266
267	/*
268	* a somewhat faster data structure might be nice, but
269	* with 8 priorities this actually needs <20 insns
270	* per shift, the most expensive operation.
271	*/
272	typedef struct {
273	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
274	int size;
275	} reqq;
276
277	static reqq req_queue;
278	static reqq res_queue;
279
280	int reqq_push (reqq *q, aio_req req)
281	{
282	int pri = req->pri;
283	req->next = 0;
284
285	if (q->qe[pri])
286	{
287	q->qe[pri]->next = req;
288	q->qe[pri] = req;
289	}
290	else
291	q->qe[pri] = q->qs[pri] = req;
292
293	return q->size++;
294	}
295
296	aio_req reqq_shift (reqq *q)
297	{
298	int pri;
299
300	if (!q->size)
301	return 0;
302
303	--q->size;
304
305	for (pri = NUM_PRI; pri--; )
306	{
307	aio_req req = q->qs[pri];
308
309	if (req)
310	{
311	if (!(q->qs[pri] = req->next))
312	q->qe[pri] = 0;
313
314	return req;
315	}
316	}
317
318	abort ();
319	}
320
321	static int poll_cb ();
322	static void req_invoke (aio_req req);
323	static void req_free (aio_req req);	235	static void req_destroy (aio_req req);
324	static void req_cancel (aio_req req);	236	static void req_cancel (aio_req req);
325		237
		238	static void
		239	want_poll (void)
		240	{
		241	/* write a dummy byte to the pipe so fh becomes ready */
		242	s_epipe_signal (&respipe);
		243	}
		244
		245	static void
		246	done_poll (void)
		247	{
		248	/* read any signals sent by the worker threads */
		249	s_epipe_drain (&respipe);
		250	}
		251
326	/* must be called at most once */	252	/* must be called at most once */
327	static SV *req_sv (aio_req req, const char *klass)	253	static SV *
		254	req_sv (aio_req req, HV *stash)
328	{	255	{
329	if (!req->self)	256	if (!req->self)
330	{	257	{
331	req->self = (SV *)newHV ();	258	req->self = (SV *)newHV ();
332	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
333	}	260	}
334		261
335	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	262	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
336	}	263	}
337		264
338	static aio_req SvAIO_REQ (SV *sv)	265	static SV *
		266	newSVaio_wd (aio_wd wd)
		267	{
		268	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		269	}
		270
		271	static aio_req
		272	SvAIO_REQ (SV *sv)
339	{	273	{
340	MAGIC *mg;	274	MAGIC *mg;
341		275
342	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	276	if (!SvROK (sv)
		277	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		278	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		279	&& SvSTASH (SvRV (sv)) != aio_req_stash
		280	&& !sv_derived_from (sv, "IO::AIO::REQ")))
343	croak ("object of class " AIO_REQ_KLASS " expected");	281	croak ("object of class IO::AIO::REQ expected");
344		282
345	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	283	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
346		284
347	return mg ? (aio_req)mg->mg_ptr : 0;	285	return mg ? (aio_req)mg->mg_ptr : 0;
348	}	286	}
349		287
		288	static aio_wd
		289	SvAIO_WD (SV *sv)
		290	{
		291	if (!SvROK (sv)
		292	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		293	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		294	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		295
		296	return (aio_wd)(long)SvIVX (SvRV (sv));
		297	}
		298
		299	static void
350	static void aio_grp_feed (aio_req grp)	300	aio_grp_feed (aio_req grp)
351	{	301	{
352	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	302	if (grp->sv2 && SvOK (grp->sv2))
353	{	303	{
354	int old_len = grp->length;
355
356	if (grp->fh2 && SvOK (grp->fh2))
357	{
358	dSP;	304	dSP;
359		305
360	ENTER;	306	ENTER;
361	SAVETMPS;	307	SAVETMPS;
362	PUSHMARK (SP);	308	PUSHMARK (SP);
363	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	309	XPUSHs (req_sv (grp, aio_grp_stash));
364	PUTBACK;	310	PUTBACK;
365	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	311	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
366	SPAGAIN;	312	SPAGAIN;
367	FREETMPS;	313	FREETMPS;
368	LEAVE;	314	LEAVE;
369	}
370
371	/* stop if no progress has been made */
372	if (old_len == grp->length)
373	{
374	SvREFCNT_dec (grp->fh2);
375	grp->fh2 = 0;
376	break;
377	}
378	}	315	}
379	}	316	}
380		317
381	static void aio_grp_dec (aio_req grp)	318	static void
		319	req_submit (eio_req *req)
382	{	320	{
383	--grp->length;	321	eio_submit (req);
384		322
385	/* call feeder, if applicable */	323	if (expect_false (on_next_submit))
386	aio_grp_feed (grp);
387
388	/* finish, if done */
389	if (!grp->length && grp->fd)
390	{	324	{
391	req_invoke (grp);	325	dSP;
392	req_free (grp);	326	SV *cb = sv_2mortal (on_next_submit);
		327
		328	on_next_submit = 0;
		329
		330	PUSHMARK (SP);
		331	PUTBACK;
		332	call_sv (cb, G_DISCARD | G_EVAL);
393	}	333	}
394	}	334	}
395		335
		336	static int
396	static void req_invoke (aio_req req)	337	req_invoke (eio_req *req)
397	{	338	{
398	dSP;	339	if (req->flags & FLAG_SV2_RO_OFF)
		340	SvREADONLY_off (req->sv2);
399		341
400	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	342	if (!EIO_CANCELLED (req) && req->callback)
401	{	343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
402	ENTER;	348	ENTER;
403	SAVETMPS;	349	SAVETMPS;
404	PUSHMARK (SP);	350	PUSHMARK (SP);
405	EXTEND (SP, 1);	351	EXTEND (SP, 1);
406		352
		353	/* do not recreate the result IV from scratch each time */
		354	if (expect_true (sv_result_cache))
		355	{
		356	sv_result = sv_result_cache; sv_result_cache = 0;
		357	SvIV_set (sv_result, req->result);
		358	SvIOK_only (sv_result);
		359	}
		360	else
		361	{
		362	sv_result = newSViv (req->result);
		363	SvREADONLY_on (sv_result);
		364	}
		365
407	switch (req->type)	366	switch (req->type)
408	{	367	{
		368	case EIO_WD_OPEN:
		369	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		370	break;
		371
409	case REQ_READDIR:	372	case EIO_READDIR:
410	{	373	{
411	SV *rv = &PL_sv_undef;	374	SV *rv = &PL_sv_undef;
412		375
413	if (req->result >= 0)	376	if (req->result >= 0)
414	{	377	{
415	int i;	378	int i;
416	char *buf = req->data2ptr;	379	char *names = (char *)req->ptr2;
		380	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
417	AV *av = newAV ();	381	AV *av = newAV ();
418		382
419	av_extend (av, req->result - 1);	383	av_extend (av, req->result - 1);
420		384
421	for (i = 0; i < req->result; ++i)	385	for (i = 0; i < req->result; ++i)
422	{	386	{
423	SV *sv = newSVpv (buf, 0);	387	if (req->int1 & EIO_READDIR_DENTS)
		388	{
		389	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
424		390
		391	if (req->int1 & EIO_READDIR_CUSTOM2)
		392	{
		393	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		394	AV *avent = newAV ();
		395
		396	av_extend (avent, 2);
		397
		398	if (!sv_type [ent->type])
		399	{
		400	sv_type [ent->type] = newSViv (ent->type);
		401	SvREADONLY_on (sv_type [ent->type]);
		402	}
		403
		404	av_store (avent, 0, namesv);
		405	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		406	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		407
		408	av_store (av, i, newRV_noinc ((SV *)avent));
		409	}
		410	else
425	av_store (av, i, sv);	411	av_store (av, i, namesv);
		412
		413	++ent;
		414	}
		415	else
		416	{
		417	SV *name = newSVpv (names, 0);
		418	av_store (av, i, name);
426	buf += SvCUR (sv) + 1;	419	names += SvCUR (name) + 1;
		420	}
427	}	421	}
428		422
429	rv = sv_2mortal (newRV_noinc ((SV *)av));	423	rv = sv_2mortal (newRV_noinc ((SV *)av));
430	}	424	}
431		425
432	PUSHs (rv);	426	PUSHs (rv);
		427
		428	if (req->int1 & EIO_READDIR_CUSTOM1)
		429	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
433	}	430	}
434	break;	431	break;
435		432
436	case REQ_OPEN:	433	case EIO_OPEN:
437	{	434	{
438	/* convert fd to fh */	435	/* convert fd to fh */
439	SV *fh;	436	SV *fh = &PL_sv_undef;
440		437
441	PUSHs (sv_2mortal (newSViv (req->result)));	438	if (req->result >= 0)
442	PUTBACK;	439	{
443	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	440	GV *gv = (GV *)sv_newmortal ();
444	SPAGAIN;	441	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		442	char sym [64];
		443	int symlen;
		444
		445	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		446	gv_init (gv, aio_stash, sym, symlen, 0);
445		447
446	fh = SvREFCNT_inc (POPs);	448	symlen = snprintf (
		449	sym,
		450	sizeof (sym),
		451	"%s&=%d",
		452	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		453	(int)req->result
		454	);
447		455
		456	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		457	fh = (SV *)gv;
		458	}
		459
448	PUSHMARK (SP);	460	PUSHs (fh);
449	XPUSHs (sv_2mortal (fh));
450	}	461	}
451	break;	462	break;
452		463
		464	case EIO_STATVFS:
		465	case EIO_FSTATVFS:
		466	{
		467	SV *rv = &PL_sv_undef;
		468
		469	#ifndef _WIN32
		470	if (req->result >= 0)
		471	{
		472	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		473	HV *hv = newHV ();
		474
		475	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		476
		477	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		478	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		479	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		480	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		481	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		482	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		483	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		484	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		485	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		486	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		487	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		488	}
		489	#endif
		490
		491	PUSHs (rv);
		492	}
		493
		494	break;
		495
453	case REQ_GROUP:	496	case EIO_GROUP:
454	req->fd = 2; /* mark group as finished */	497	req->int1 = 2; /* mark group as finished */
455		498
456	if (req->data)	499	if (req->sv1)
457	{	500	{
458	int i;	501	int i;
459	AV *av = (AV *)req->data;	502	AV *av = (AV *)req->sv1;
460		503
461	EXTEND (SP, AvFILL (av) + 1);	504	EXTEND (SP, AvFILL (av) + 1);
462	for (i = 0; i <= AvFILL (av); ++i)	505	for (i = 0; i <= AvFILL (av); ++i)
463	PUSHs (*av_fetch (av, i, 0));	506	PUSHs (*av_fetch (av, i, 0));
464	}	507	}
465	break;	508	break;
466		509
467	case REQ_NOP:	510	case EIO_NOP:
468	case REQ_BUSY:	511	case EIO_BUSY:
469	break;	512	break;
470		513
		514	case EIO_READLINK:
		515	case EIO_REALPATH:
		516	if (req->result > 0)
		517	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		518	break;
		519
		520	case EIO_STAT:
		521	case EIO_LSTAT:
		522	case EIO_FSTAT:
		523	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		524
		525	if (!(PL_laststatval = req->result))
		526	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		527	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		528
		529	PUSHs (sv_result);
		530	break;
		531
		532	case EIO_SEEK:
		533	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		534	break;
		535
		536	case EIO_READ:
		537	{
		538	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		539	*SvEND (req->sv2) = 0;
		540	SvPOK_only (req->sv2);
		541	SvSETMAGIC (req->sv2);
		542	PUSHs (sv_result);
		543	}
		544	break;
		545
		546	case EIO_CUSTOM:
		547	if (req->feed == fiemap)
		548	{
		549	#if HAVE_FIEMAP
		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	#endif
		581	}
		582	else
		583	PUSHs (sv_result);
		584	break;
		585
		586	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		587	if (req->result > 0)
		588	SvIV_set (sv_result, 0);
		589	/* FALLTHROUGH */
		590
471	default:	591	default:
472	PUSHs (sv_2mortal (newSViv (req->result)));	592	PUSHs (sv_result);
473	break;	593	break;
474	}	594	}
475		595
476	errno = req->errorno;	596	errno = req->errorno;
477		597
478	PUTBACK;	598	PUTBACK;
479	call_sv (req->callback, G_VOID | G_EVAL);	599	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
480	SPAGAIN;	600	SPAGAIN;
		601
		602	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		603	SvREFCNT_dec (sv_result);
		604	else
		605	sv_result_cache = sv_result;
481		606
482	FREETMPS;	607	FREETMPS;
483	LEAVE;	608	LEAVE;
		609
		610	PUTBACK;
484	}	611	}
485		612
486	if (req->grp)	613	return !!SvTRUE (ERRSV);
487	{
488	aio_req grp = req->grp;
489
490	/* unlink request */
491	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
492	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
493
494	if (grp->grp_first == req)
495	grp->grp_first = req->grp_next;
496
497	aio_grp_dec (grp);
498	}
499
500	if (SvTRUE (ERRSV))
501	{
502	req_free (req);
503	croak (0);
504	}
505	}	614	}
506		615
507	static void req_free (aio_req req)	616	static void
		617	req_destroy (aio_req req)
508	{	618	{
509	if (req->self)	619	if (req->self)
510	{	620	{
511	sv_unmagic (req->self, PERL_MAGIC_ext);	621	sv_unmagic (req->self, PERL_MAGIC_ext);
512	SvREFCNT_dec (req->self);	622	SvREFCNT_dec (req->self);
513	}	623	}
514		624
515	SvREFCNT_dec (req->data);
516	SvREFCNT_dec (req->fh);	625	SvREFCNT_dec (req->sv1);
517	SvREFCNT_dec (req->fh2);	626	SvREFCNT_dec (req->sv2);
		627	SvREFCNT_dec (req->sv3);
		628	SvREFCNT_dec (req->sv4);
518	SvREFCNT_dec (req->callback);	629	SvREFCNT_dec (req->callback);
519	Safefree (req->statdata);
520		630
521	if (req->type == REQ_READDIR)
522	free (req->data2ptr);
523
524	Safefree (req);	631	free (req);
525	}	632	}
526		633
		634	static void
527	static void req_cancel_subs (aio_req grp)	635	req_cancel_subs (aio_req grp)
528	{	636	{
529	aio_req sub;
530
531	if (grp->type != REQ_GROUP)	637	if (grp->type != EIO_GROUP)
532	return;	638	return;
533		639
534	SvREFCNT_dec (grp->fh2);	640	SvREFCNT_dec (grp->sv2);
535	grp->fh2 = 0;	641	grp->sv2 = 0;
536		642
537	for (sub = grp->grp_first; sub; sub = sub->grp_next)	643	eio_grp_cancel (grp);
538	req_cancel (sub);
539	}	644	}
540		645
541	static void req_cancel (aio_req req)	646	static void ecb_cold
		647	create_respipe (void)
542	{	648	{
543	req->flags |= FLAG_CANCELLED;	649	if (s_epipe_renew (&respipe))
544		650	croak ("IO::AIO: unable to initialize result pipe");
545	req_cancel_subs (req);
546	}	651	}
547		652
548	static void *aio_proc(void *arg);	653	static void
549		654	poll_wait (void)
550	static void start_thread (void)
551	{	655	{
552	sigset_t fullsigset, oldsigset;
553	pthread_attr_t attr;
554
555	worker *wrk = calloc (1, sizeof (worker));
556
557	if (!wrk)
558	croak ("unable to allocate worker thread data");
559
560	pthread_attr_init (&attr);
561	pthread_attr_setstacksize (&attr, STACKSIZE);
562	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
563	#ifdef PTHREAD_SCOPE_PROCESS
564	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
565	#endif
566
567	sigfillset (&fullsigset);
568
569	LOCK (wrklock);
570	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
571
572	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
573	{
574	wrk->prev = &wrk_first;
575	wrk->next = wrk_first.next;
576	wrk_first.next->prev = wrk;
577	wrk_first.next = wrk;
578	++started;
579	}
580	else
581	free (wrk);
582
583	sigprocmask (SIG_SETMASK, &oldsigset, 0);
584	UNLOCK (wrklock);
585	}
586
587	static void maybe_start_thread ()
588	{
589	if (get_nthreads () >= wanted)
590	return;
591
592	/* todo: maybe use idle here, but might be less exact */
593	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
594	return;
595
596	start_thread ();
597	}
598
599	static void req_send (aio_req req)
600	{
601	++nreqs;
602
603	LOCK (reqlock);
604	++nready;
605	reqq_push (&req_queue, req);
606	pthread_cond_signal (&reqwait);
607	UNLOCK (reqlock);
608
609	maybe_start_thread ();
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	LOCK (reqlock);
622	reqq_push (&req_queue, req);
623	pthread_cond_signal (&reqwait);
624	UNLOCK (reqlock);
625
626	LOCK (wrklock);
627	--started;
628	UNLOCK (wrklock);
629	}
630
631	static void set_max_idle (int nthreads)
632	{
633	if (WORDACCESS_UNSAFE) LOCK (reqlock);
634	max_idle = nthreads <= 0 ? 1 : nthreads;
635	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
636	}
637
638	static void min_parallel (int nthreads)
639	{
640	if (wanted < nthreads)
641	wanted = nthreads;
642	}
643
644	static void max_parallel (int nthreads)
645	{
646	if (wanted > nthreads)
647	wanted = nthreads;
648
649	while (started > wanted)
650	end_thread ();
651	}
652
653	static void poll_wait ()
654	{
655	fd_set rfd;
656
657	while (nreqs)	656	while (eio_nreqs ())
658	{	657	{
659	int size;	658	int size;
660	if (WORDACCESS_UNSAFE) LOCK (reslock);	659
		660	X_LOCK (reslock);
661	size = res_queue.size;	661	size = res_queue.size;
662	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	662	X_UNLOCK (reslock);
663		663
664	if (size)	664	if (size)
665	return;	665	return;
666		666
667	maybe_start_thread ();	667	etp_maybe_start_thread ();
668		668
669	FD_ZERO(&rfd);	669	s_epipe_wait (&respipe);
670	FD_SET(respipe [0], &rfd);
671
672	select (respipe [0] + 1, &rfd, 0, 0, 0);
673	}	670	}
674	}	671	}
675		672
676	static int poll_cb ()	673	static int
		674	poll_cb (void)
677	{	675	{
678	dSP;
679	int count = 0;
680	int maxreqs = max_poll_reqs;
681	int do_croak = 0;
682	struct timeval tv_start, tv_now;
683	aio_req req;
684
685	if (max_poll_time)
686	gettimeofday (&tv_start, 0);
687
688	for (;;)	676	for (;;)
689	{	677	{
690	for (;;)	678	int res = eio_poll ();
		679
		680	if (res > 0)
		681	croak (0);
		682
		683	if (!max_outstanding || max_outstanding > eio_nreqs ())
		684	return res;
		685
		686	poll_wait ();
		687	}
		688	}
		689
		690	static void ecb_cold
		691	reinit (void)
		692	{
		693	create_respipe ();
		694
		695	if (eio_init (want_poll, done_poll) < 0)
		696	croak ("IO::AIO: unable to initialise eio library");
		697	}
		698
		699	/*****************************************************************************/
		700
		701	#if !_POSIX_MAPPED_FILES
		702	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		703	# define munmap(addr,length) (errno = ENOSYS, -1)
		704	#endif
		705
		706	#if !_POSIX_MEMORY_PROTECTION
		707	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		708	# define PROT_NONE 0
		709	# define PROT_WRITE 0
		710	# define MAP_PRIVATE 0
		711	# define MAP_SHARED 0
		712	# define MAP_FIXED 0
		713	#endif
		714
		715	#define MMAP_MAGIC PERL_MAGIC_ext
		716
		717	static int ecb_cold
		718	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		719	{
		720	int old_errno = errno;
		721	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		722	errno = old_errno;
		723
		724	mg->mg_obj = 0; /* just in case */
		725
		726	SvREADONLY_off (sv);
		727
		728	if (SvPVX (sv) != mg->mg_ptr)
		729	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		730
		731	SvCUR_set (sv, 0);
		732	SvPVX (sv) = 0;
		733	SvOK_off (sv);
		734
		735	return 0;
		736	}
		737
		738	static MGVTBL mmap_vtbl = {
		739	0, 0, 0, 0, mmap_free
		740	};
		741
		742	/*****************************************************************************/
		743
		744	static SV *
		745	get_cb (SV *cb_sv)
		746	{
		747	SvGETMAGIC (cb_sv);
		748	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		749	}
		750
		751	static aio_req ecb_noinline
		752	dreq (SV *callback)
		753	{
		754	SV *cb_cv;
		755	aio_req req;
		756	int req_pri = next_pri;
		757	next_pri = EIO_PRI_DEFAULT;
		758
		759	cb_cv = get_cb (callback);
		760
		761	req = calloc (sizeof (*req), 1);
		762	if (!req)
		763	croak ("out of memory during eio_req allocation");
		764
		765	req->callback = SvREFCNT_inc (cb_cv);
		766	req->pri = req_pri;
		767
		768	return req;
		769	}
		770
		771	#define dREQ \
		772	aio_req req = dreq (callback); \
		773
		774	#define REQ_SEND \
		775	PUTBACK; \
		776	req_submit (req); \
		777	SPAGAIN; \
		778	\
		779	if (GIMME_V != G_VOID) \
		780	XPUSHs (req_sv (req, aio_req_stash));
		781
		782	ecb_inline void
		783	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		784	{
		785	if (expect_false (SvROK (path)))
		786	{
		787	SV *rv = SvRV (path);
		788	SV *wdob;
		789
		790	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
691	{	791	{
692	maybe_start_thread ();	792	path = AvARRAY (rv)[1];
		793	wdob = AvARRAY (rv)[0];
693		794
694	LOCK (reslock);	795	if (SvOK (wdob))
695	req = reqq_shift (&res_queue);
696
697	if (req)
698	{	796	{
699	--npending;	797	*wd = SvAIO_WD (wdob);
700		798	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
701	if (!res_queue.size)
702	{
703	/* read any signals sent by the worker threads */
704	char buf [32];
705	while (read (respipe [0], buf, 32) == 32)
706	;
707	}
708	}
709
710	UNLOCK (reslock);
711
712	if (!req)
713	break;
714
715	--nreqs;
716
717	if (req->type == REQ_GROUP && req->length)
718	{
719	req->fd = 1; /* mark request as delayed */
720	continue;
721	}	799	}
722	else	800	else
723	{	801	*wd = EIO_INVALID_WD;
724	if (req->type == REQ_READ)
725	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
726
727	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
728	SvREADONLY_off (req->data);
729
730	if (req->statdata)
731	{
732	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
733	PL_laststatval = req->result;
734	PL_statcache = *(req->statdata);
735	}
736
737	req_invoke (req);
738
739	count++;
740	}
741
742	req_free (req);
743
744	if (maxreqs && !--maxreqs)
745	break;
746
747	if (max_poll_time)
748	{
749	gettimeofday (&tv_now, 0);
750
751	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
752	break;
753	}
754	}	802	}
		803	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		804	{
		805	*wd = (aio_wd)(long)SvIVX (rv);
		806	*wdsv = SvREFCNT_inc_NN (rv);
		807	*ptr = ".";
		808	return; /* path set to "." */
		809	}
		810	else
		811	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		812	}
755		813
756	if (nreqs <= max_outstanding)	814	*pathsv = newSVsv (path);
		815	*ptr = SvPVbyte_nolen (*pathsv);
		816	}
		817
		818	static void ecb_noinline
		819	req_set_path1 (aio_req req, SV *path)
		820	{
		821	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		822	}
		823
		824	static void ecb_noinline
		825	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		826	{
		827	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		828
		829	switch (SvTYPE (rv))
		830	{
		831	case SVt_PVIO:
		832	case SVt_PVLV:
		833	case SVt_PVGV:
		834	req->type = type_fh;
		835	req->sv1 = newSVsv (fh_or_path);
		836	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
757	break;	837	break;
758		838
759	poll_wait ();	839	default:
760		840	req->type = type_path;
761	++maxreqs;	841	req_set_path1 (req, fh_or_path);
		842	break;
762	}	843	}
763
764	return count;
765	}	844	}
766		845
767	static void create_pipe ()	846	XS(boot_IO__AIO) ecb_cold;
768	{
769	if (pipe (respipe))
770	croak ("unable to initialize result pipe");
771		847
772	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
773	croak ("cannot set result pipe to nonblocking mode");
774
775	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
776	croak ("cannot set result pipe to nonblocking mode");
777	}
778
779	/*****************************************************************************/
780	/* work around various missing functions */
781
782	#if !HAVE_PREADWRITE
783	# define pread aio_pread
784	# define pwrite aio_pwrite
785
786	/*
787	* make our pread/pwrite safe against themselves, but not against
788	* normal read/write by using a mutex. slows down execution a lot,
789	* but that's your problem, not mine.
790	*/
791	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
792
793	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
794	{
795	ssize_t res;
796	off_t ooffset;
797
798	LOCK (preadwritelock);
799	ooffset = lseek (fd, 0, SEEK_CUR);
800	lseek (fd, offset, SEEK_SET);
801	res = read (fd, buf, count);
802	lseek (fd, ooffset, SEEK_SET);
803	UNLOCK (preadwritelock);
804
805	return res;
806	}
807
808	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
809	{
810	ssize_t res;
811	off_t ooffset;
812
813	LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);
816	res = write (fd, buf, count);
817	lseek (fd, offset, SEEK_SET);
818	UNLOCK (preadwritelock);
819
820	return res;
821	}
822	#endif
823
824	#if !HAVE_FDATASYNC
825	# define fdatasync fsync
826	#endif
827
828	#if !HAVE_READAHEAD
829	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
830
831	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
832	{
833	dBUF;
834
835	while (count > 0)
836	{
837	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
838
839	pread (fd, aio_buf, len, offset);
840	offset += len;
841	count -= len;
842	}
843
844	errno = 0;
845	}
846
847	#endif
848
849	#if !HAVE_READDIR_R
850	# define readdir_r aio_readdir_r
851
852	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
853
854	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
855	{
856	struct dirent *e;
857	int errorno;
858
859	LOCK (readdirlock);
860
861	e = readdir (dirp);
862	errorno = errno;
863
864	if (e)
865	{
866	*res = ent;
867	strcpy (ent->d_name, e->d_name);
868	}
869	else
870	*res = 0;
871
872	UNLOCK (readdirlock);
873
874	errno = errorno;
875	return e ? 0 : -1;
876	}
877	#endif
878
879	/* sendfile always needs emulation */
880	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
881	{
882	ssize_t res;
883
884	if (!count)
885	return 0;
886
887	#if HAVE_SENDFILE
888	# if __linux
889	res = sendfile (ofd, ifd, &offset, count);
890
891	# elif __freebsd
892	/*
893	* Of course, the freebsd sendfile is a dire hack with no thoughts
894	* wasted on making it similar to other I/O functions.
895	*/
896	{
897	off_t sbytes;
898	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
899
900	if (res < 0 && sbytes)
901	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
902	res = sbytes;
903	}
904
905	# elif __hpux
906	res = sendfile (ofd, ifd, offset, count, 0, 0);
907
908	# elif __solaris
909	{
910	struct sendfilevec vec;
911	size_t sbytes;
912
913	vec.sfv_fd = ifd;
914	vec.sfv_flag = 0;
915	vec.sfv_off = offset;
916	vec.sfv_len = count;
917
918	res = sendfilev (ofd, &vec, 1, &sbytes);
919
920	if (res < 0 && sbytes)
921	res = sbytes;
922	}
923
924	# endif
925	#else
926	res = -1;
927	errno = ENOSYS;
928	#endif
929
930	if (res < 0
931	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
932	#if __solaris
933	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
934	#endif
935	)
936	)
937	{
938	/* emulate sendfile. this is a major pain in the ass */
939	dBUF;
940
941	res = 0;
942
943	while (count)
944	{
945	ssize_t cnt;
946
947	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
948
949	if (cnt <= 0)
950	{
951	if (cnt && !res) res = -1;
952	break;
953	}
954
955	cnt = write (ofd, aio_buf, cnt);
956
957	if (cnt <= 0)
958	{
959	if (cnt && !res) res = -1;
960	break;
961	}
962
963	offset += cnt;
964	res += cnt;
965	count -= cnt;
966	}
967	}
968
969	return res;
970	}
971
972	/* read a full directory */
973	static void scandir_ (aio_req req, worker *self)
974	{
975	DIR *dirp;
976	union
977	{
978	struct dirent d;
979	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
980	} *u;
981	struct dirent *entp;
982	char *name, *names;
983	int memlen = 4096;
984	int memofs = 0;
985	int res = 0;
986	int errorno;
987
988	LOCK (wrklock);
989	self->dirp = dirp = opendir (req->dataptr);
990	self->dbuf = u = malloc (sizeof (*u));
991	req->data2ptr = names = malloc (memlen);
992	UNLOCK (wrklock);
993
994	if (dirp && u && names)
995	for (;;)
996	{
997	errno = 0;
998	readdir_r (dirp, &u->d, &entp);
999
1000	if (!entp)
1001	break;
1002
1003	name = entp->d_name;
1004
1005	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1006	{
1007	int len = strlen (name) + 1;
1008
1009	res++;
1010
1011	while (memofs + len > memlen)
1012	{
1013	memlen *= 2;
1014	LOCK (wrklock);
1015	req->data2ptr = names = realloc (names, memlen);
1016	UNLOCK (wrklock);
1017
1018	if (!names)
1019	break;
1020	}
1021
1022	memcpy (names + memofs, name, len);
1023	memofs += len;
1024	}
1025	}
1026
1027	if (errno)
1028	res = -1;
1029
1030	req->result = res;
1031	}
1032
1033	/*****************************************************************************/
1034
1035	static void *aio_proc (void *thr_arg)
1036	{
1037	aio_req req;
1038	struct timespec ts;
1039	worker *self = (worker *)thr_arg;
1040
1041	/* try to distribute timeouts somewhat evenly */
1042	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1043	* (1000000000UL / 1024UL);
1044
1045	for (;;)
1046	{
1047	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1048
1049	LOCK (reqlock);
1050
1051	for (;;)
1052	{
1053	self->req = req = reqq_shift (&req_queue);
1054
1055	if (req)
1056	break;
1057
1058	++idle;
1059
1060	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1061	== ETIMEDOUT)
1062	{
1063	if (idle > max_idle)
1064	{
1065	--idle;
1066	UNLOCK (reqlock);
1067	LOCK (wrklock);
1068	--started;
1069	UNLOCK (wrklock);
1070	goto quit;
1071	}
1072
1073	/* we are allowed to idle, so do so without any timeout */
1074	pthread_cond_wait (&reqwait, &reqlock);
1075	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1076	}
1077
1078	--idle;
1079	}
1080
1081	--nready;
1082
1083	UNLOCK (reqlock);
1084
1085	errno = 0; /* strictly unnecessary */
1086
1087	if (!(req->flags & FLAG_CANCELLED))
1088	switch (req->type)
1089	{
1090	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1091	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1092
1093	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1094	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1095
1096	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1097	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1098	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1099
1100	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1101	case REQ_CLOSE: req->result = close (req->fd); break;
1102	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1103	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1104	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1105	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1106	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1107	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1108
1109	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1110	case REQ_FSYNC: req->result = fsync (req->fd); break;
1111	case REQ_READDIR: scandir_ (req, self); break;
1112
1113	case REQ_BUSY:
1114	{
1115	struct timeval tv;
1116
1117	tv.tv_sec = req->fd;
1118	tv.tv_usec = req->fd2;
1119
1120	req->result = select (0, 0, 0, 0, &tv);
1121	}
1122
1123	case REQ_GROUP:
1124	case REQ_NOP:
1125	break;
1126
1127	case REQ_QUIT:
1128	goto quit;
1129
1130	default:
1131	req->result = ENOSYS;
1132	break;
1133	}
1134
1135	req->errorno = errno;
1136
1137	LOCK (reslock);
1138
1139	++npending;
1140
1141	if (!reqq_push (&res_queue, req))
1142	/* write a dummy byte to the pipe so fh becomes ready */
1143	write (respipe [1], &respipe, 1);
1144
1145	self->req = 0;
1146	worker_clear (self);
1147
1148	UNLOCK (reslock);
1149	}
1150
1151	quit:
1152	LOCK (wrklock);
1153	worker_free (self);
1154	UNLOCK (wrklock);
1155
1156	return 0;
1157	}
1158
1159	/*****************************************************************************/
1160
1161	static void atfork_prepare (void)
1162	{
1163	LOCK (wrklock);
1164	LOCK (reqlock);
1165	LOCK (reslock);
1166	#if !HAVE_PREADWRITE
1167	LOCK (preadwritelock);
1168	#endif
1169	#if !HAVE_READDIR_R
1170	LOCK (readdirlock);
1171	#endif
1172	}
1173
1174	static void atfork_parent (void)
1175	{
1176	#if !HAVE_READDIR_R
1177	UNLOCK (readdirlock);
1178	#endif
1179	#if !HAVE_PREADWRITE
1180	UNLOCK (preadwritelock);
1181	#endif
1182	UNLOCK (reslock);
1183	UNLOCK (reqlock);
1184	UNLOCK (wrklock);
1185	}
1186
1187	static void atfork_child (void)
1188	{
1189	aio_req prv;
1190
1191	while (prv = reqq_shift (&req_queue))
1192	req_free (prv);
1193
1194	while (prv = reqq_shift (&res_queue))
1195	req_free (prv);
1196
1197	while (wrk_first.next != &wrk_first)
1198	{
1199	worker *wrk = wrk_first.next;
1200
1201	if (wrk->req)
1202	req_free (wrk->req);
1203
1204	worker_clear (wrk);
1205	worker_free (wrk);
1206	}
1207
1208	started = 0;
1209	idle = 0;
1210	nreqs = 0;
1211	nready = 0;
1212	npending = 0;
1213
1214	close (respipe [0]);
1215	close (respipe [1]);
1216	create_pipe ();
1217
1218	atfork_parent ();
1219	}
1220
1221	#define dREQ \
1222	aio_req req; \
1223	int req_pri = next_pri; \
1224	next_pri = DEFAULT_PRI + PRI_BIAS; \
1225	\
1226	if (SvOK (callback) && !SvROK (callback)) \
1227	croak ("callback must be undef or of reference type"); \
1228	\
1229	Newz (0, req, 1, aio_cb); \
1230	if (!req) \
1231	croak ("out of memory during aio_req allocation"); \
1232	\
1233	req->callback = newSVsv (callback); \
1234	req->pri = req_pri
1235
1236	#define REQ_SEND \
1237	req_send (req); \
1238	\
1239	if (GIMME_V != G_VOID) \
1240	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1241
1242	MODULE = IO::AIO PACKAGE = IO::AIO	848	MODULE = IO::AIO PACKAGE = IO::AIO
1243		849
1244	PROTOTYPES: ENABLE	850	PROTOTYPES: ENABLE
1245		851
1246	BOOT:	852	BOOT:
1247	{	853	{
		854	static const struct {
		855	const char *name;
		856	IV iv;
		857	} *civ, const_iv[] = {
		858	# define const_niv(name, value) { # name, (IV) value },
		859	# define const_iv(name) { # name, (IV) name },
		860	# define const_eio(name) { # name, (IV) EIO_ ## name },
		861
		862	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		863
		864	const_iv (ENOSYS)
		865	const_iv (EXDEV)
		866	const_iv (EBADR)
		867
		868	const_iv (O_RDONLY)
		869	const_iv (O_WRONLY)
		870	const_iv (O_RDWR)
		871	const_iv (O_CREAT)
		872	const_iv (O_TRUNC)
		873	const_iv (O_EXCL)
		874	const_iv (O_APPEND)
		875
		876	const_iv (O_ASYNC)
		877	const_iv (O_DIRECT)
		878	const_iv (O_NOATIME)
		879
		880	const_iv (O_CLOEXEC)
		881	const_iv (O_NOCTTY)
		882	const_iv (O_NOFOLLOW)
		883	const_iv (O_NONBLOCK)
		884	const_iv (O_EXEC)
		885	const_iv (O_SEARCH)
		886	const_iv (O_DIRECTORY)
		887	const_iv (O_DSYNC)
		888	const_iv (O_RSYNC)
		889	const_iv (O_SYNC)
		890	const_iv (O_TTY_INIT)
		891
		892	const_iv (S_IFIFO)
		893	const_iv (S_IFCHR)
		894	const_iv (S_IFBLK)
		895	const_iv (S_IFLNK)
		896	const_iv (S_IFREG)
		897	const_iv (S_IFDIR)
		898	const_iv (S_IFWHT)
		899	const_iv (S_IFSOCK)
		900	const_iv (S_IFMT)
		901
		902	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		903	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		904	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		905	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		906	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		907	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		908
		909	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		910	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		911	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		912	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		913	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		914
		915	const_iv (ST_RDONLY)
		916	const_iv (ST_NOSUID)
		917	const_iv (ST_NODEV)
		918	const_iv (ST_NOEXEC)
		919	const_iv (ST_SYNCHRONOUS)
		920	const_iv (ST_MANDLOCK)
		921	const_iv (ST_WRITE)
		922	const_iv (ST_APPEND)
		923	const_iv (ST_IMMUTABLE)
		924	const_iv (ST_NOATIME)
		925	const_iv (ST_NODIRATIME)
		926	const_iv (ST_RELATIME)
		927
		928	const_iv (PROT_NONE)
		929	const_iv (PROT_EXEC)
		930	const_iv (PROT_READ)
		931	const_iv (PROT_WRITE)
		932
		933	/*const_iv (MAP_FIXED)*/
		934	const_iv (MAP_PRIVATE)
		935	const_iv (MAP_SHARED)
		936	const_iv (MAP_ANONYMOUS)
		937
		938	/* linuxish */
		939	const_iv (MAP_HUGETLB)
		940	const_iv (MAP_LOCKED)
		941	const_iv (MAP_NORESERVE)
		942	const_iv (MAP_POPULATE)
		943	const_iv (MAP_NONBLOCK)
		944
		945	const_iv (FIEMAP_FLAG_SYNC)
		946	const_iv (FIEMAP_FLAG_XATTR)
		947	const_iv (FIEMAP_FLAGS_COMPAT)
		948	const_iv (FIEMAP_EXTENT_LAST)
		949	const_iv (FIEMAP_EXTENT_UNKNOWN)
		950	const_iv (FIEMAP_EXTENT_DELALLOC)
		951	const_iv (FIEMAP_EXTENT_ENCODED)
		952	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		953	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		954	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		955	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		956	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		957	const_iv (FIEMAP_EXTENT_MERGED)
		958	const_iv (FIEMAP_EXTENT_SHARED)
		959
		960	const_eio (SEEK_SET)
		961	const_eio (SEEK_CUR)
		962	const_eio (SEEK_END)
		963
		964	const_eio (MCL_FUTURE)
		965	const_eio (MCL_CURRENT)
		966
		967	const_eio (MS_ASYNC)
		968	const_eio (MS_INVALIDATE)
		969	const_eio (MS_SYNC)
		970
		971	const_eio (MT_MODIFY)
		972
		973	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		974	const_eio (SYNC_FILE_RANGE_WRITE)
		975	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		976
		977	const_eio (FALLOC_FL_KEEP_SIZE)
		978
		979	const_eio (READDIR_DENTS)
		980	const_eio (READDIR_DIRS_FIRST)
		981	const_eio (READDIR_STAT_ORDER)
		982	const_eio (READDIR_FOUND_UNKNOWN)
		983
		984	const_eio (DT_UNKNOWN)
		985	const_eio (DT_FIFO)
		986	const_eio (DT_CHR)
		987	const_eio (DT_DIR)
		988	const_eio (DT_BLK)
		989	const_eio (DT_REG)
		990	const_eio (DT_LNK)
		991	const_eio (DT_SOCK)
		992	const_eio (DT_WHT)
		993	};
		994
1248	HV *stash = gv_stashpv ("IO::AIO", 1);	995	aio_stash = gv_stashpv ("IO::AIO" , 1);
		996	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		997	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		998	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1249		999
1250	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1000	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1251	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1001	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1252	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1253	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1254	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1255	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1256		1002
1257	create_pipe ();	1003	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1258	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1259	}
1260		1004
		1005	reinit ();
		1006	}
		1007
1261	void	1008	void
		1009	reinit ()
		1010	PROTOTYPE:
		1011
		1012	void
1262	max_poll_reqs (int nreqs)	1013	max_poll_reqs (unsigned int nreqs)
1263	PROTOTYPE: $	1014	PROTOTYPE: $
1264	CODE:	1015	CODE:
1265	max_poll_reqs = nreqs;	1016	eio_set_max_poll_reqs (nreqs);
1266		1017
1267	void	1018	void
1268	max_poll_time (double nseconds)	1019	max_poll_time (double nseconds)
1269	PROTOTYPE: $	1020	PROTOTYPE: $
1270	CODE:	1021	CODE:
1271	max_poll_time = nseconds * AIO_TICKS;	1022	eio_set_max_poll_time (nseconds);
1272		1023
1273	void	1024	void
1274	min_parallel (int nthreads)	1025	min_parallel (unsigned int nthreads)
1275	PROTOTYPE: $
1276
1277	void
1278	max_parallel (int nthreads)
1279	PROTOTYPE: $
1280
1281	void
1282	max_idle (int nthreads)
1283	PROTOTYPE: $	1026	PROTOTYPE: $
1284	CODE:	1027	CODE:
1285	set_max_idle (nthreads);	1028	eio_set_min_parallel (nthreads);
1286		1029
1287	int	1030	void
1288	max_outstanding (int maxreqs)	1031	max_parallel (unsigned int nthreads)
1289	PROTOTYPE: $	1032	PROTOTYPE: $
1290	CODE:	1033	CODE:
1291	RETVAL = max_outstanding;	1034	eio_set_max_parallel (nthreads);
		1035
		1036	void
		1037	max_idle (unsigned int nthreads)
		1038	PROTOTYPE: $
		1039	CODE:
		1040	eio_set_max_idle (nthreads);
		1041
		1042	void
		1043	idle_timeout (unsigned int seconds)
		1044	PROTOTYPE: $
		1045	CODE:
		1046	eio_set_idle_timeout (seconds);
		1047
		1048	void
		1049	max_outstanding (unsigned int maxreqs)
		1050	PROTOTYPE: $
		1051	CODE:
1292	max_outstanding = maxreqs;	1052	max_outstanding = maxreqs;
1293	OUTPUT:
1294	RETVAL
1295		1053
1296	void	1054	void
1297	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1055	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1298	SV * pathname
1299	int flags
1300	int mode
1301	SV * callback
1302	PROTOTYPE: $$$;$
1303	PPCODE:	1056	PPCODE:
1304	{	1057	{
1305	dREQ;	1058	dREQ;
1306		1059
1307	req->type = REQ_OPEN;	1060	req->type = EIO_WD_OPEN;
1308	req->data = newSVsv (pathname);	1061	req_set_path1 (req, pathname);
1309	req->dataptr = SvPVbyte_nolen (req->data);
1310	req->fd = flags;
1311	req->mode = mode;
1312		1062
1313	REQ_SEND;	1063	REQ_SEND;
1314	}	1064	}
1315		1065
1316	void	1066	void
		1067	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1068	PPCODE:
		1069	{
		1070	dREQ;
		1071
		1072	req->type = EIO_OPEN;
		1073	req_set_path1 (req, pathname);
		1074	req->int1 = flags;
		1075	req->int2 = mode;
		1076
		1077	REQ_SEND;
		1078	}
		1079
		1080	void
1317	aio_close (fh,callback=&PL_sv_undef)	1081	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1318	SV * fh
1319	SV * callback
1320	PROTOTYPE: $;$
1321	ALIAS:	1082	ALIAS:
1322	aio_close = REQ_CLOSE
1323	aio_fsync = REQ_FSYNC	1083	aio_fsync = EIO_FSYNC
1324	aio_fdatasync = REQ_FDATASYNC	1084	aio_fdatasync = EIO_FDATASYNC
		1085	aio_syncfs = EIO_SYNCFS
1325	PPCODE:	1086	PPCODE:
1326	{	1087	{
		1088	int fd = s_fileno_croak (fh, 0);
1327	dREQ;	1089	dREQ;
1328		1090
1329	req->type = ix;	1091	req->type = ix;
1330	req->fh = newSVsv (fh);	1092	req->sv1 = newSVsv (fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1093	req->int1 = fd;
1332		1094
1333	REQ_SEND (req);	1095	REQ_SEND;
1334	}	1096	}
1335		1097
1336	void	1098	void
		1099	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1100	PPCODE:
		1101	{
		1102	int fd = s_fileno_croak (fh, 0);
		1103	dREQ;
		1104
		1105	req->type = EIO_SYNC_FILE_RANGE;
		1106	req->sv1 = newSVsv (fh);
		1107	req->int1 = fd;
		1108	req->offs = offset;
		1109	req->size = nbytes;
		1110	req->int2 = flags;
		1111
		1112	REQ_SEND;
		1113	}
		1114
		1115	void
		1116	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1117	PPCODE:
		1118	{
		1119	int fd = s_fileno_croak (fh, 0);
		1120	dREQ;
		1121
		1122	req->type = EIO_FALLOCATE;
		1123	req->sv1 = newSVsv (fh);
		1124	req->int1 = fd;
		1125	req->int2 = mode;
		1126	req->offs = offset;
		1127	req->size = len;
		1128
		1129	REQ_SEND;
		1130	}
		1131
		1132	void
		1133	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1134	PPCODE:
		1135	{
		1136	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1137	int fd = s_fileno_croak (fh, 0);
		1138	dREQ;
		1139
		1140	if (expect_false (close_fd < 0))
		1141	{
		1142	int pipefd [2];
		1143
		1144	if (
		1145	#ifdef _WIN32
		1146	_pipe (pipefd, 1, _O_BINARY) < 0
		1147	#else
		1148	pipe (pipefd) < 0
		1149	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1150	#endif
		1151	|| close (pipefd [1]) < 0
		1152	)
		1153	abort (); /*D*/
		1154
		1155	close_fd = pipefd [0];
		1156	}
		1157
		1158	req->type = EIO_DUP2;
		1159	req->int1 = close_fd;
		1160	req->sv2 = newSVsv (fh);
		1161	req->int2 = fd;
		1162
		1163	REQ_SEND;
		1164	}
		1165
		1166	void
		1167	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1168	PPCODE:
		1169	{
		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
1337	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)
1338	SV * fh
1339	UV offset
1340	UV length
1341	SV * data
1342	UV dataoffset
1343	SV * callback
1344	ALIAS:	1184	ALIAS:
1345	aio_read = REQ_READ	1185	aio_read = EIO_READ
1346	aio_write = REQ_WRITE	1186	aio_write = EIO_WRITE
1347	PROTOTYPE: $$$$$;$
1348	PPCODE:	1187	PPCODE:
1349	{	1188	{
1350	aio_req req;
1351	STRLEN svlen;	1189	STRLEN svlen;
		1190	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1352	char *svptr = SvPVbyte (data, svlen);	1191	char *svptr = SvPVbyte (data, svlen);
1353		1192	UV len = SvUV (length);
1354	SvUPGRADE (data, SVt_PV);
1355	SvPOK_on (data);
1356		1193
1357	if (dataoffset < 0)	1194	if (dataoffset < 0)
1358	dataoffset += svlen;	1195	dataoffset += svlen;
1359		1196
1360	if (dataoffset < 0 || dataoffset > svlen)	1197	if (dataoffset < 0 || dataoffset > svlen)
1361	croak ("data offset outside of string");	1198	croak ("dataoffset outside of data scalar");
1362		1199
1363	if (ix == REQ_WRITE)	1200	if (ix == EIO_WRITE)
1364	{	1201	{
1365	/* write: check length and adjust. */	1202	/* write: check length and adjust. */
1366	if (length < 0 || length + dataoffset > svlen)	1203	if (!SvOK (length) || len + dataoffset > svlen)
1367	length = svlen - dataoffset;	1204	len = svlen - dataoffset;
1368	}	1205	}
1369	else	1206	else
1370	{	1207	{
1371	/* read: grow scalar as necessary */	1208	/* read: check type and grow scalar as necessary */
		1209	SvUPGRADE (data, SVt_PV);
1372	svptr = SvGROW (data, length + dataoffset);	1210	svptr = SvGROW (data, len + dataoffset + 1);
1373	}	1211	}
1374
1375	if (length < 0)
1376	croak ("length must not be negative");
1377		1212
1378	{	1213	{
1379	dREQ;	1214	dREQ;
1380		1215
1381	req->type = ix;	1216	req->type = ix;
1382	req->fh = newSVsv (fh);	1217	req->sv1 = newSVsv (fh);
1383	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1218	req->int1 = fd;
1384	: IoOFP (sv_2io (fh)));	1219	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1385	req->offset = offset;	1220	req->size = len;
1386	req->length = length;
1387	req->data = SvREFCNT_inc (data);	1221	req->sv2 = SvREFCNT_inc (data);
1388	req->dataptr = (char *)svptr + dataoffset;	1222	req->ptr2 = (char *)svptr + dataoffset;
		1223	req->stroffset = dataoffset;
1389		1224
1390	if (!SvREADONLY (data))	1225	if (!SvREADONLY (data))
1391	{	1226	{
1392	SvREADONLY_on (data);	1227	SvREADONLY_on (data);
1393	req->data2ptr = (void *)data;	1228	req->flags |= FLAG_SV2_RO_OFF;
1394	}	1229	}
1395		1230
1396	REQ_SEND;	1231	REQ_SEND;
1397	}	1232	}
1398	}	1233	}
1399		1234
1400	void	1235	void
1401	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1236	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1402	SV * out_fh	1237	ALIAS:
1403	SV * in_fh	1238	aio_readlink = EIO_READLINK
1404	UV in_offset	1239	aio_realpath = EIO_REALPATH
1405	UV length
1406	SV * callback
1407	PROTOTYPE: $$$$;$
1408	PPCODE:	1240	PPCODE:
1409	{	1241	{
		1242	dREQ;
		1243
		1244	req->type = ix;
		1245	req_set_path1 (req, pathname);
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1252	PPCODE:
		1253	{
		1254	int ifd = s_fileno_croak (in_fh , 0);
		1255	int ofd = s_fileno_croak (out_fh, 1);
1410	dREQ;	1256	dREQ;
1411		1257
1412	req->type = REQ_SENDFILE;	1258	req->type = EIO_SENDFILE;
1413	req->fh = newSVsv (out_fh);	1259	req->sv1 = newSVsv (out_fh);
1414	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1260	req->int1 = ofd;
1415	req->fh2 = newSVsv (in_fh);	1261	req->sv2 = newSVsv (in_fh);
1416	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1262	req->int2 = ifd;
1417	req->offset = in_offset;	1263	req->offs = in_offset;
1418	req->length = length;	1264	req->size = length;
1419		1265
1420	REQ_SEND;	1266	REQ_SEND;
1421	}	1267	}
1422		1268
1423	void	1269	void
1424	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1270	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1425	SV * fh
1426	UV offset
1427	IV length
1428	SV * callback
1429	PROTOTYPE: $$$;$
1430	PPCODE:	1271	PPCODE:
1431	{	1272	{
		1273	int fd = s_fileno_croak (fh, 0);
1432	dREQ;	1274	dREQ;
1433		1275
1434	req->type = REQ_READAHEAD;	1276	req->type = EIO_READAHEAD;
1435	req->fh = newSVsv (fh);	1277	req->sv1 = newSVsv (fh);
1436	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1278	req->int1 = fd;
1437	req->offset = offset;	1279	req->offs = offset;
1438	req->length = length;	1280	req->size = length;
1439		1281
1440	REQ_SEND;	1282	REQ_SEND;
1441	}	1283	}
1442		1284
1443	void	1285	void
1444	aio_stat (fh_or_path,callback=&PL_sv_undef)	1286	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1445	SV * fh_or_path
1446	SV * callback
1447	ALIAS:	1287	ALIAS:
1448	aio_stat = REQ_STAT	1288	aio_stat = EIO_STAT
1449	aio_lstat = REQ_LSTAT	1289	aio_lstat = EIO_LSTAT
		1290	aio_statvfs = EIO_STATVFS
1450	PPCODE:	1291	PPCODE:
1451	{	1292	{
1452	dREQ;	1293	dREQ;
1453		1294
1454	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);
1455	if (!req->statdata)
1456	{
1457	req_free (req);
1458	croak ("out of memory during aio_req->statdata allocation");
1459	}
1460
1461	if (SvPOK (fh_or_path))
1462	{
1463	req->type = ix;
1464	req->data = newSVsv (fh_or_path);
1465	req->dataptr = SvPVbyte_nolen (req->data);
1466	}
1467	else
1468	{
1469	req->type = REQ_FSTAT;
1470	req->fh = newSVsv (fh_or_path);
1471	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1472	}
1473		1296
1474	REQ_SEND;	1297	REQ_SEND;
1475	}	1298	}
1476		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
1477	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
1478	aio_unlink (pathname,callback=&PL_sv_undef)	1397	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1479	SV * pathname
1480	SV * callback
1481	ALIAS:	1398	ALIAS:
1482	aio_unlink = REQ_UNLINK	1399	aio_unlink = EIO_UNLINK
1483	aio_rmdir = REQ_RMDIR	1400	aio_rmdir = EIO_RMDIR
1484	aio_readdir = REQ_READDIR	1401	aio_readdir = EIO_READDIR
1485	PPCODE:	1402	PPCODE:
1486	{	1403	{
1487	dREQ;	1404	dREQ;
1488		1405
1489	req->type = ix;	1406	req->type = ix;
1490	req->data = newSVsv (pathname);	1407	req_set_path1 (req, pathname);
1491	req->dataptr = SvPVbyte_nolen (req->data);	1408
1492
1493	REQ_SEND;	1409	REQ_SEND;
1494	}	1410	}
1495		1411
1496	void	1412	void
1497	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1413	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1498	SV * oldpath
1499	SV * newpath
1500	SV * callback
1501	ALIAS:	1414	ALIAS:
1502	aio_link = REQ_LINK	1415	aio_link = EIO_LINK
1503	aio_symlink = REQ_SYMLINK	1416	aio_symlink = EIO_SYMLINK
1504	aio_rename = REQ_RENAME	1417	aio_rename = EIO_RENAME
1505	PPCODE:	1418	PPCODE:
1506	{	1419	{
		1420	eio_wd wd2 = 0;
1507	dREQ;	1421	dREQ;
1508		1422
1509	req->type = ix;	1423	req->type = ix;
1510	req->fh = newSVsv (oldpath);	1424	req_set_path1 (req, oldpath);
1511	req->data2ptr = SvPVbyte_nolen (req->fh);	1425	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1512	req->data = newSVsv (newpath);	1426	req->int3 = (long)wd2;
1513	req->dataptr = SvPVbyte_nolen (req->data);
1514		1427
1515	REQ_SEND;	1428	REQ_SEND;
1516	}	1429	}
1517		1430
1518	void	1431	void
1519	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1432	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1520	SV * pathname
1521	SV * callback
1522	UV mode
1523	UV dev
1524	PPCODE:	1433	PPCODE:
1525	{	1434	{
1526	dREQ;	1435	dREQ;
1527		1436
1528	req->type = REQ_MKNOD;	1437	req->type = EIO_MKNOD;
1529	req->data = newSVsv (pathname);
1530	req->dataptr = SvPVbyte_nolen (req->data);
1531	req->mode = (mode_t)mode;	1438	req->int2 = (mode_t)mode;
1532	req->offset = dev;	1439	req->offs = dev;
		1440	req_set_path1 (req, pathname);
1533		1441
1534	REQ_SEND;	1442	REQ_SEND;
1535	}	1443	}
1536		1444
1537	void	1445	void
		1446	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1447	ALIAS:
		1448	aio_mtouch = EIO_MTOUCH
		1449	aio_msync = EIO_MSYNC
		1450	PPCODE:
		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);
		1524	dREQ;
		1525
		1526	req->type = EIO_CUSTOM;
		1527	req->sv1 = newSVsv (fh);
		1528	req->int1 = fd;
		1529
		1530	req->feed = fiemap;
		1531	#if HAVE_FIEMAP
		1532	/* keep our fingers crossed that the next two types are 64 bit */
		1533	req->offs = start;
		1534	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1535	req->int2 = flags;
		1536	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1537	#endif
		1538
		1539	REQ_SEND;
		1540	}
		1541
		1542	void
1538	aio_busy (delay,callback=&PL_sv_undef)	1543	aio_busy (double delay, SV *callback=&PL_sv_undef)
1539	double delay
1540	SV * callback
1541	PPCODE:	1544	PPCODE:
1542	{	1545	{
1543	dREQ;	1546	dREQ;
1544		1547
1545	req->type = REQ_BUSY;	1548	req->type = EIO_BUSY;
1546	req->fd = delay < 0. ? 0 : delay;	1549	req->nv1 = delay < 0. ? 0. : delay;
1547	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1548		1550
1549	REQ_SEND;	1551	REQ_SEND;
1550	}	1552	}
1551		1553
1552	void	1554	void
1553	aio_group (callback=&PL_sv_undef)	1555	aio_group (SV *callback=&PL_sv_undef)
1554	SV * callback
1555	PROTOTYPE: ;$
1556	PPCODE:	1556	PPCODE:
1557	{	1557	{
1558	dREQ;	1558	dREQ;
1559		1559
1560	req->type = REQ_GROUP;	1560	req->type = EIO_GROUP;
		1561
1561	req_send (req);	1562	req_submit (req);
1562
1563	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1563	XPUSHs (req_sv (req, aio_grp_stash));
1564	}	1564	}
1565		1565
1566	void	1566	void
1567	aio_nop (callback=&PL_sv_undef)	1567	aio_nop (SV *callback=&PL_sv_undef)
1568	SV * callback	1568	ALIAS:
		1569	aio_nop = EIO_NOP
		1570	aio_sync = EIO_SYNC
1569	PPCODE:	1571	PPCODE:
1570	{	1572	{
1571	dREQ;	1573	dREQ;
1572		1574
1573	req->type = REQ_NOP;	1575	req->type = ix;
1574		1576
1575	REQ_SEND;	1577	REQ_SEND;
1576	}	1578	}
1577		1579
1578	int	1580	int
1579	aioreq_pri (int pri = 0)	1581	aioreq_pri (int pri = 0)
1580	PROTOTYPE: ;$
1581	CODE:	1582	CODE:
1582	RETVAL = next_pri - PRI_BIAS;	1583	RETVAL = next_pri;
1583	if (items > 0)	1584	if (items > 0)
1584	{	1585	{
1585	if (pri < PRI_MIN) pri = PRI_MIN;	1586	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1586	if (pri > PRI_MAX) pri = PRI_MAX;	1587	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1587	next_pri = pri + PRI_BIAS;	1588	next_pri = pri;
1588	}	1589	}
1589	OUTPUT:	1590	OUTPUT:
1590	RETVAL	1591	RETVAL
1591		1592
1592	void	1593	void
1593	aioreq_nice (int nice = 0)	1594	aioreq_nice (int nice = 0)
1594	CODE:	1595	CODE:
1595	nice = next_pri - nice;	1596	nice = next_pri - nice;
1596	if (nice < PRI_MIN) nice = PRI_MIN;	1597	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1597	if (nice > PRI_MAX) nice = PRI_MAX;	1598	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1598	next_pri = nice + PRI_BIAS;	1599	next_pri = nice;
1599		1600
1600	void	1601	void
1601	flush ()	1602	flush ()
1602	PROTOTYPE:
1603	CODE:	1603	CODE:
1604	while (nreqs)	1604	while (eio_nreqs ())
1605	{	1605	{
1606	poll_wait ();	1606	poll_wait ();
1607	poll_cb (0);	1607	poll_cb ();
1608	}	1608	}
1609		1609
1610	void	1610	int
1611	poll()	1611	poll ()
1612	PROTOTYPE:
1613	CODE:	1612	CODE:
1614	if (nreqs)
1615	{
1616	poll_wait ();	1613	poll_wait ();
1617	poll_cb (0);	1614	RETVAL = poll_cb ();
1618	}
1619
1620	int
1621	poll_fileno()
1622	PROTOTYPE:
1623	CODE:
1624	RETVAL = respipe [0];
1625	OUTPUT:	1615	OUTPUT:
1626	RETVAL	1616	RETVAL
1627		1617
1628	int	1618	int
		1619	poll_fileno ()
		1620	CODE:
		1621	RETVAL = s_epipe_fd (&respipe);
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625	int
1629	poll_cb(...)	1626	poll_cb (...)
1630	PROTOTYPE:	1627	PROTOTYPE:
1631	CODE:	1628	CODE:
1632	RETVAL = poll_cb ();	1629	RETVAL = poll_cb ();
1633	OUTPUT:	1630	OUTPUT:
1634	RETVAL	1631	RETVAL
1635		1632
1636	void	1633	void
1637	poll_wait()	1634	poll_wait ()
1638	PROTOTYPE:
1639	CODE:	1635	CODE:
1640	if (nreqs)
1641	poll_wait ();	1636	poll_wait ();
1642		1637
1643	int	1638	int
1644	nreqs()	1639	nreqs ()
1645	PROTOTYPE:
1646	CODE:	1640	CODE:
1647	RETVAL = nreqs;	1641	RETVAL = eio_nreqs ();
1648	OUTPUT:	1642	OUTPUT:
1649	RETVAL	1643	RETVAL
1650		1644
1651	int	1645	int
1652	nready()	1646	nready ()
1653	PROTOTYPE:
1654	CODE:	1647	CODE:
1655	RETVAL = get_nready ();	1648	RETVAL = eio_nready ();
1656	OUTPUT:	1649	OUTPUT:
1657	RETVAL	1650	RETVAL
1658		1651
1659	int	1652	int
1660	npending()	1653	npending ()
1661	PROTOTYPE:
1662	CODE:	1654	CODE:
1663	RETVAL = get_npending ();	1655	RETVAL = eio_npending ();
1664	OUTPUT:	1656	OUTPUT:
1665	RETVAL	1657	RETVAL
1666		1658
1667	int	1659	int
1668	nthreads()	1660	nthreads ()
1669	PROTOTYPE:
1670	CODE:	1661	CODE:
1671	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1662	RETVAL = eio_nthreads ();
1672	RETVAL = started;
1673	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1674	OUTPUT:	1663	OUTPUT:
1675	RETVAL	1664	RETVAL
1676		1665
		1666	int
		1667	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1668	CODE:
		1669	RETVAL = posix_fadvise (fh, offset, length, advice);
		1670	OUTPUT:
		1671	RETVAL
		1672
		1673	IV
		1674	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1675	CODE:
		1676	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	void
		1681	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1682	PPCODE:
		1683	sv_unmagic (scalar, MMAP_MAGIC);
		1684	{
		1685	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1686	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1687	if (addr == (void *)-1)
		1688	XSRETURN_NO;
		1689
		1690	sv_force_normal (scalar);
		1691
		1692	/* we store the length in mg_obj, as namlen is I32 :/ */
		1693	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1694	->mg_obj = (SV *)length;
		1695
		1696	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1697
		1698	if (!(prot & PROT_WRITE))
		1699	SvREADONLY_on (scalar);
		1700
		1701	if (SvLEN (scalar))
		1702	Safefree (SvPVX (scalar));
		1703
		1704	SvPVX (scalar) = (char *)addr;
		1705	SvCUR_set (scalar, length);
		1706	SvLEN_set (scalar, 0);
		1707	SvPOK_only (scalar);
		1708
		1709	XSRETURN_YES;
		1710	}
		1711
		1712	void
		1713	munmap (SV *scalar)
		1714	CODE:
		1715	sv_unmagic (scalar, MMAP_MAGIC);
		1716
		1717	int
		1718	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1719	ALIAS:
		1720	mprotect = 1
		1721	CODE:
		1722	{
		1723	STRLEN svlen;
		1724	void *addr = SvPVbyte (scalar, svlen);
		1725	size_t len = SvUV (length);
		1726
		1727	if (offset < 0)
		1728	offset += svlen;
		1729
		1730	if (offset < 0 || offset > svlen)
		1731	croak ("offset outside of scalar");
		1732
		1733	if (!SvOK (length) || len + offset > svlen)
		1734	len = svlen - offset;
		1735
		1736	addr = (void *)(((intptr_t)addr) + offset);
		1737	eio_page_align (&addr, &len);
		1738
		1739	switch (ix)
		1740	{
		1741	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1742	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1743	}
		1744	}
		1745	OUTPUT:
		1746	RETVAL
		1747
		1748	int
		1749	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1750	CODE:
		1751	{
		1752	STRLEN svlen;
		1753	void *addr = SvPVbyte (scalar, svlen);
		1754	size_t len = SvUV (length);
		1755
		1756	if (offset < 0)
		1757	offset += svlen;
		1758
		1759	if (offset < 0 || offset > svlen)
		1760	croak ("offset outside of scalar");
		1761
		1762	if (!SvOK (length) || len + offset > svlen)
		1763	len = svlen - offset;
		1764
		1765	addr = (void *)(((intptr_t)addr) + offset);
		1766	eio_page_align (&addr, &len);
		1767	#if _POSIX_MEMLOCK_RANGE
		1768	RETVAL = munlock (addr, len);
		1769	#else
		1770	RETVAL = ((errno = ENOSYS), -1);
		1771	#endif
		1772	}
		1773	OUTPUT:
		1774	RETVAL
		1775
		1776	int
		1777	munlockall ()
		1778	CODE:
		1779	#if _POSIX_MEMLOCK
		1780	munlockall ();
		1781	#else
		1782	RETVAL = -1;
		1783	errno = ENOSYS;
		1784	#endif
		1785	OUTPUT:
		1786	RETVAL
		1787
		1788	void _on_next_submit (SV *cb)
		1789	CODE:
		1790	SvREFCNT_dec (on_next_submit);
		1791	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1792
1677	PROTOTYPES: DISABLE	1793	PROTOTYPES: DISABLE
		1794
		1795	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1796
		1797	BOOT:
		1798	{
		1799	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1800	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1801	}
		1802
		1803	void
		1804	DESTROY (SV *self)
		1805	CODE:
		1806	{
		1807	aio_wd wd = SvAIO_WD (self);
		1808	#if HAVE_AT
		1809	{
		1810	SV *callback = &PL_sv_undef;
		1811	dREQ; /* clobbers next_pri :/ */
		1812	next_pri = req->pri; /* restore next_pri */
		1813	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1814	req->type = EIO_WD_CLOSE;
		1815	req->wd = wd;
		1816	REQ_SEND;
		1817	}
		1818	#else
		1819	eio_wd_close_sync (wd);
		1820	#endif
		1821	}
1678		1822
1679	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1823	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1680		1824
1681	void	1825	void
1682	cancel (aio_req_ornot req)	1826	cancel (aio_req_ornot req)
1683	CODE:	1827	CODE:
1684	req_cancel (req);	1828	eio_cancel (req);
1685		1829
1686	void	1830	void
1687	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1831	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1688	CODE:	1832	PPCODE:
		1833	{
		1834	if (GIMME_V != G_VOID)
		1835	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1836
		1837	if (items > 1)
		1838	{
		1839	SV *cb_cv =get_cb (callback);
		1840
1689	SvREFCNT_dec (req->callback);	1841	SvREFCNT_dec (req->callback);
1690	req->callback = newSVsv (callback);	1842	req->callback = SvREFCNT_inc (cb_cv);
		1843	}
		1844	}
1691		1845
1692	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1846	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1693		1847
1694	void	1848	void
1695	add (aio_req grp, ...)	1849	add (aio_req grp, ...)
1696	PPCODE:	1850	PPCODE:
1697	{	1851	{
1698	int i;	1852	int i;
1699	aio_req req;
1700		1853
1701	if (grp->fd == 2)	1854	if (grp->int1 == 2)
1702	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1855	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1703		1856
1704	for (i = 1; i < items; ++i )	1857	for (i = 1; i < items; ++i )
1705	{	1858	{
		1859	aio_req req;
		1860
1706	if (GIMME_V != G_VOID)	1861	if (GIMME_V != G_VOID)
1707	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1862	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1708		1863
1709	req = SvAIO_REQ (ST (i));	1864	req = SvAIO_REQ (ST (i));
1710		1865
1711	if (req)	1866	if (req)
1712	{	1867	eio_grp_add (grp, req);
1713	++grp->length;
1714	req->grp = grp;
1715
1716	req->grp_prev = 0;
1717	req->grp_next = grp->grp_first;
1718
1719	if (grp->grp_first)
1720	grp->grp_first->grp_prev = req;
1721
1722	grp->grp_first = req;
1723	}
1724	}	1868	}
1725	}	1869	}
1726		1870
1727	void	1871	void
1728	cancel_subs (aio_req_ornot req)	1872	cancel_subs (aio_req_ornot req)
…		…
1737	AV *av;	1881	AV *av;
1738		1882
1739	grp->errorno = errno;	1883	grp->errorno = errno;
1740		1884
1741	av = newAV ();	1885	av = newAV ();
		1886	av_extend (av, items - 1);
1742		1887
1743	for (i = 1; i < items; ++i )	1888	for (i = 1; i < items; ++i )
1744	av_push (av, newSVsv (ST (i)));	1889	av_push (av, newSVsv (ST (i)));
1745		1890
1746	SvREFCNT_dec (grp->data);	1891	SvREFCNT_dec (grp->sv1);
1747	grp->data = (SV *)av;	1892	grp->sv1 = (SV *)av;
1748	}	1893	}
1749		1894
1750	void	1895	void
1751	errno (aio_req grp, int errorno = errno)	1896	errno (aio_req grp, int errorno = errno)
1752	CODE:	1897	CODE:
1753	grp->errorno = errorno;	1898	grp->errorno = errorno;
1754		1899
1755	void	1900	void
1756	limit (aio_req grp, int limit)	1901	limit (aio_req grp, int limit)
1757	CODE:	1902	CODE:
1758	grp->fd2 = limit;	1903	eio_grp_limit (grp, limit);
1759	aio_grp_feed (grp);
1760		1904
1761	void	1905	void
1762	feed (aio_req grp, SV *callback=&PL_sv_undef)	1906	feed (aio_req grp, SV *callback=&PL_sv_undef)
1763	CODE:	1907	CODE:
1764	{	1908	{
1765	SvREFCNT_dec (grp->fh2);	1909	SvREFCNT_dec (grp->sv2);
1766	grp->fh2 = newSVsv (callback);	1910	grp->sv2 = newSVsv (callback);
		1911	grp->feed = aio_grp_feed;
1767		1912
1768	if (grp->fd2 <= 0)	1913	if (grp->int2 <= 0)
1769	grp->fd2 = 2;	1914	grp->int2 = 2;
1770		1915
1771	aio_grp_feed (grp);	1916	eio_grp_limit (grp, grp->int2);
1772	}	1917	}
1773		1918

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