[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.232 by root, Sat Jun 13 00:06:13 2015 UTC

…		…
1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>	21	# include <sys/mman.h>
39	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ \|\| defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79
		80	#define EIO_STRUCT_STAT struct _stati64
		81	#define EIO_STRUCT_STATI64
		82
		83	#else
		84
40	# include <sys/socket.h>	85	#include <sys/time.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	86	#include <sys/select.h>
		87	#include <unistd.h>
		88	#include <utime.h>
		89	#include <signal.h>
		90
		91	#define EIO_STRUCT_STAT Stat_t
		92
		93	#endif
		94
		95	/*****************************************************************************/
		96
		97	#if __GNUC__ >= 3
		98	# define expect(expr,value) __builtin_expect ((expr),(value))
		99	#else
		100	# define expect(expr,value) (expr)
		101	#endif
		102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV aio_stash, aio_req_stash, aio_grp_stash, aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV sv1, sv2; \
		117	SV sv3, sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
43	# else	144	# else
44	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	146	# endif
46	#endif	147	#endif
47		148
48	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
49	#ifndef NAME_MAX	150	#include "def0.h"
50	# define NAME_MAX 4096
51	#endif
52		151
53	#ifndef PTHREAD_STACK_MIN	152	#ifndef makedev
54	/* care for broken platforms, e.g. windows */	153	# define makedev(maj,min) (((maj) << 8) \| (min))
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 \|\| __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	154	#endif
		155	#ifndef major
		156	# define major(dev) ((dev) >> 8)
76	#endif	157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
77		161
78	/* buffer size for various temporary buffers */	162	#if PAGESIZE <= 0
79	#define AIO_BUFSIZE 65536	163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
80		165
81	#define dBUF \	166	/*****************************************************************************/
82	char *aio_buf; \	167
83	LOCK (wrklock); \	168	static void
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	169	fiemap (eio_req *req)
85	UNLOCK (wrklock); \	170	{
86	if (!aio_buf) \	171	req->result = -1;
		172
		173	#if HAVE_FIEMAP
		174	/* assume some c99 */
		175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
		178
		179	req->flags \|= EIO_FLAG_PTR1_FREE;
		180
		181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
		185
		186	fiemap = malloc (sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		187	errno = ENOMEM;
		188	if (!fiemap)
87	return -1;	189	return;
88		190
89	enum {	191	req->ptr1 = fiemap;
90	REQ_QUIT,
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	};
102		192
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	193	fiemap->fm_start = req->offs;
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
105		197
106	typedef struct aio_cb	198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
107	{	199	return;
108	struct aio_cb *volatile next;
109		200
110	SV data, callback;	201	if (req->int3 >= 0 /* not autosizing */
111	SV fh, fh2;	202	\|\| !fiemap->fm_mapped_extents /* no more extents */
112	void dataptr, data2ptr;	203	\|\| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
113	Stat_t *statdata;	204	goto done;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117		205
118	STRLEN dataoffset;	206	/* else we have to loop -
119	int type;	207	* it would be tempting (actually I tried that first) to just query the
120	int fd, fd2;	208	* number of extents needed, but linux often feels like not returning all
121	int errorno;	209	* extents, without telling us it left any out. this complicates
122	mode_t mode; /* open */	210	* this quite a bit.
		211	*/
123		212
124	unsigned char flags;	213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125	unsigned char pri;
126		214
127	SV self; / the perl counterpart of this request, if any */	215	for (;;)
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;
136	typedef aio_cb *aio_req_ornot;
137
138	enum {
139	PRI_MIN = -4,
140	PRI_MAX = 4,
141
142	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146
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	{	216	{
184	closedir (wrk->dirp);	217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
185	wrk->dirp = 0;	218	char scratch[3072];
186	}	219	struct fiemap incmap = (struct fiemap )scratch;
187		220
188	if (wrk->dbuf)	221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
189	{	222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
190	free (wrk->dbuf);	223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
191	wrk->dbuf = 0;	224	incmap->fm_flags = fiemap->fm_flags;
192	}	225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
193	}
194		226
195	static void worker_free (worker *wrk)	227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
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;	228	return;
242		229
243	--q->size;	230	if (!incmap->fm_mapped_extents)
		231	goto done;
244		232
245	for (pri = NUM_PRI; pri--; )	233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
246	{	234	fiemap = realloc (fiemap, sizeof (fiemap) + sizeof (struct fiemap_extent) count);
247	aio_req req = q->qs[pri];	235	errno = ENOMEM;
248
249	if (req)	236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
250	{	242	{
251	if (!(q->qs[pri] = req->next))	243	struct fiemap_extent *e = incmap->fm_extents + count;
252	q->qe[pri] = 0;
253		244
254	return req;	245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
255	}	253	}
256	}	254	}
257		255
258	abort ();	256	done:
259	}	257	req->result = 0;
260		258
261	static int poll_cb (int max);	259	#else
262	static void req_invoke (aio_req req);	260	errno = ENOSYS;
		261	#endif
		262	}
		263
		264	/*****************************************************************************/
		265
		266	enum {
		267	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		268	};
		269
		270	typedef eio_req *aio_req;
		271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
		273
		274	static SV *on_next_submit;
		275	static int next_pri = EIO_PRI_DEFAULT;
		276	static int max_outstanding;
		277
		278	static s_epipe respipe;
		279
263	static void req_free (aio_req req);	280	static void req_destroy (aio_req req);
264	static void req_cancel (aio_req req);	281	static void req_cancel (aio_req req);
265		282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
		296
266	/* must be called at most once */	297	/* must be called at most once */
267	static SV req_sv (aio_req req, const char klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
268	{	300	{
269	if (!req->self)	301	if (!req->self)
270	{	302	{
271	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
272	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
273	}	305	}
274		306
275	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
276	}	308	}
277		309
278	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
279	{	318	{
280	MAGIC *mg;	319	MAGIC *mg;
281		320
282	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	\|\| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
283	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
284		327
285	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
286		329
287	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	331	}
289		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	\|\| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	\|\| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static void
290	static void aio_grp_feed (aio_req grp)	345	aio_grp_feed (aio_req grp)
291	{	346	{
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	347	if (grp->sv2 && SvOK (grp->sv2))
293	{	348	{
294	int old_len = grp->length;
295
296	if (grp->fh2 && SvOK (grp->fh2))
297	{
298	dSP;	349	dSP;
299		350
300	ENTER;	351	ENTER;
301	SAVETMPS;	352	SAVETMPS;
302	PUSHMARK (SP);	353	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	354	XPUSHs (req_sv (grp, aio_grp_stash));
304	PUTBACK;	355	PUTBACK;
305	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);	356	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);
306	SPAGAIN;	357	SPAGAIN;
307	FREETMPS;	358	FREETMPS;
308	LEAVE;	359	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	}	360	}
319	}	361	}
320		362
321	static void aio_grp_dec (aio_req grp)	363	static void
		364	req_submit (eio_req *req)
322	{	365	{
323	--grp->length;	366	eio_submit (req);
324		367
325	/* call feeder, if applicable */	368	if (expect_false (on_next_submit))
326	aio_grp_feed (grp);
327
328	/* finish, if done */
329	if (!grp->length && grp->fd)
330	{	369	{
331	req_invoke (grp);	370	dSP;
332	req_free (grp);	371	SV *cb = sv_2mortal (on_next_submit);
		372
		373	on_next_submit = 0;
		374
		375	PUSHMARK (SP);
		376	PUTBACK;
		377	call_sv (cb, G_DISCARD \| G_EVAL);
333	}	378	}
334	}	379	}
335		380
336	static void poll_wait ()	381	static int
		382	req_invoke (eio_req *req)
337	{	383	{
338	fd_set rfd;	384	if (req->flags & FLAG_SV2_RO_OFF)
		385	SvREADONLY_off (req->sv2);
339		386
340	while (nreqs)	387	if (!EIO_CANCELLED (req) && req->callback)
341	{	388	{
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;	389	dSP;
		390	static SV sv_result_cache; / caches the result integer SV */
		391	SV *sv_result;
360		392
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
362	{
363	ENTER;	393	ENTER;
364	SAVETMPS;	394	SAVETMPS;
365	PUSHMARK (SP);	395	PUSHMARK (SP);
366	EXTEND (SP, 1);	396	EXTEND (SP, 1);
367		397
		398	/* do not recreate the result IV from scratch each time */
		399	if (expect_true (sv_result_cache))
		400	{
		401	sv_result = sv_result_cache; sv_result_cache = 0;
		402	SvIV_set (sv_result, req->result);
		403	SvIOK_only (sv_result);
		404	}
		405	else
		406	{
		407	sv_result = newSViv (req->result);
		408	SvREADONLY_on (sv_result);
		409	}
		410
368	switch (req->type)	411	switch (req->type)
369	{	412	{
		413	case EIO_WD_OPEN:
		414	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		415	break;
		416
370	case REQ_READDIR:	417	case EIO_READDIR:
371	{	418	{
372	SV *rv = &PL_sv_undef;	419	SV *rv = &PL_sv_undef;
373		420
374	if (req->result >= 0)	421	if (req->result >= 0)
375	{	422	{
376	int i;	423	int i;
377	char *buf = req->data2ptr;	424	char names = (char )req->ptr2;
		425	eio_dirent ent = (eio_dirent )req->ptr1; /* might be 0 */
378	AV *av = newAV ();	426	AV *av = newAV ();
379		427
380	av_extend (av, req->result - 1);	428	av_extend (av, req->result - 1);
381		429
382	for (i = 0; i < req->result; ++i)	430	for (i = 0; i < req->result; ++i)
383	{	431	{
384	SV *sv = newSVpv (buf, 0);	432	if (req->int1 & EIO_READDIR_DENTS)
		433	{
		434	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
385		435
		436	if (req->int1 & EIO_READDIR_CUSTOM2)
		437	{
		438	static SV sv_type [EIO_DT_MAX + 1]; / type sv cache */
		439	AV *avent = newAV ();
		440
		441	av_extend (avent, 2);
		442
		443	if (!sv_type [ent->type])
		444	{
		445	sv_type [ent->type] = newSViv (ent->type);
		446	SvREADONLY_on (sv_type [ent->type]);
		447	}
		448
		449	av_store (avent, 0, namesv);
		450	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		451	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		452
		453	av_store (av, i, newRV_noinc ((SV *)avent));
		454	}
		455	else
386	av_store (av, i, sv);	456	av_store (av, i, namesv);
		457
		458	++ent;
		459	}
		460	else
		461	{
		462	SV *name = newSVpv (names, 0);
		463	av_store (av, i, name);
387	buf += SvCUR (sv) + 1;	464	names += SvCUR (name) + 1;
		465	}
388	}	466	}
389		467
390	rv = sv_2mortal (newRV_noinc ((SV *)av));	468	rv = sv_2mortal (newRV_noinc ((SV *)av));
391	}	469	}
392		470
393	PUSHs (rv);	471	PUSHs (rv);
		472
		473	if (req->int1 & EIO_READDIR_CUSTOM1)
		474	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 \| EIO_READDIR_CUSTOM2))));
394	}	475	}
395	break;	476	break;
396		477
397	case REQ_OPEN:	478	case EIO_OPEN:
398	{	479	{
399	/* convert fd to fh */	480	/* convert fd to fh */
400	SV *fh;	481	SV *fh = &PL_sv_undef;
401		482
402	PUSHs (sv_2mortal (newSViv (req->result)));	483	if (req->result >= 0)
403	PUTBACK;	484	{
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	485	GV gv = (GV )sv_newmortal ();
405	SPAGAIN;	486	int flags = req->int1 & (O_RDONLY \| O_WRONLY \| O_RDWR);
		487	char sym [64];
		488	int symlen;
		489
		490	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		491	gv_init (gv, aio_stash, sym, symlen, 0);
406		492
407	fh = SvREFCNT_inc (POPs);	493	symlen = snprintf (
		494	sym,
		495	sizeof (sym),
		496	"%s&=%d",
		497	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		498	(int)req->result
		499	);
408		500
		501	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		502	fh = (SV *)gv;
		503	}
		504
409	PUSHMARK (SP);	505	PUSHs (fh);
410	XPUSHs (sv_2mortal (fh));
411	}	506	}
412	break;	507	break;
413		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
		511	{
		512	SV *rv = &PL_sv_undef;
		513
		514	#ifndef _WIN32
		515	if (req->result >= 0)
		516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		518	HV *hv = newHV ();
		519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		520	* chooses to make it a struct.
		521	*/
		522	unsigned long fsid = 0;
		523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		524
		525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		526
		527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		528	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		529	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		530	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		531	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		532	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		533	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		534	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		535	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		536	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		537	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		538	}
		539	#endif
		540
		541	PUSHs (rv);
		542	}
		543
		544	break;
		545
414	case REQ_GROUP:	546	case EIO_GROUP:
415	req->fd = 2; /* mark group as finished */	547	req->int1 = 2; /* mark group as finished */
416		548
417	if (req->data)	549	if (req->sv1)
418	{	550	{
419	int i;	551	int i;
420	AV av = (AV )req->data;	552	AV av = (AV )req->sv1;
421		553
422	EXTEND (SP, AvFILL (av) + 1);	554	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	555	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	556	PUSHs (*av_fetch (av, i, 0));
425	}	557	}
426	break;	558	break;
427		559
428	case REQ_NOP:	560	case EIO_NOP:
429	case REQ_BUSY:	561	case EIO_BUSY:
430	break;	562	break;
431		563
		564	case EIO_READLINK:
		565	case EIO_REALPATH:
		566	if (req->result > 0)
		567	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		568	break;
		569
		570	case EIO_STAT:
		571	case EIO_LSTAT:
		572	case EIO_FSTAT:
		573	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		574
		575	if (!(PL_laststatval = req->result))
		576	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		577	PL_statcache = (EIO_STRUCT_STAT )(req->ptr2);
		578
		579	PUSHs (sv_result);
		580	break;
		581
		582	case EIO_SEEK:
		583	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		584	break;
		585
		586	case EIO_READ:
		587	{
		588	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		589	*SvEND (req->sv2) = 0;
		590	SvPOK_only (req->sv2);
		591	SvSETMAGIC (req->sv2);
		592	PUSHs (sv_result);
		593	}
		594	break;
		595
		596	case EIO_CUSTOM:
		597	if (req->feed == fiemap)
		598	{
		599	#if HAVE_FIEMAP
		600	if (!req->result)
		601	{
		602	struct fiemap fiemap = (struct fiemap )req->ptr1;
		603
		604	if (fiemap->fm_extent_count)
		605	{
		606	AV *av = newAV ();
		607	int i;
		608
		609	while (fiemap->fm_mapped_extents)
		610	{
		611	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		612	AV *ext_av = newAV ();
		613
		614	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		615	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		616	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		617	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		618
		619	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		620	}
		621
		622	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		623	}
		624	else
		625	{
		626	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		627	PUSHs (sv_result);
		628	}
		629	}
		630	#endif
		631	}
		632	else
		633	PUSHs (sv_result);
		634	break;
		635
		636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		637	if (req->result > 0)
		638	SvIV_set (sv_result, 0);
		639	/* FALLTHROUGH */
		640
432	default:	641	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	642	PUSHs (sv_result);
434	break;	643	break;
435	}	644	}
436		645
437	errno = req->errorno;	646	errno = req->errorno;
438		647
439	PUTBACK;	648	PUTBACK;
440	call_sv (req->callback, G_VOID \| G_EVAL);	649	call_sv (req->callback, G_VOID \| G_EVAL \| G_DISCARD);
441	SPAGAIN;	650	SPAGAIN;
		651
		652	if (expect_false (SvREFCNT (sv_result) != 1 \|\| sv_result_cache))
		653	SvREFCNT_dec (sv_result);
		654	else
		655	sv_result_cache = sv_result;
442		656
443	FREETMPS;	657	FREETMPS;
444	LEAVE;	658	LEAVE;
		659
		660	PUTBACK;
445	}	661	}
446		662
447	if (req->grp)	663	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	}	664	}
467		665
468	static void req_free (aio_req req)	666	static void
		667	req_destroy (aio_req req)
469	{	668	{
470	if (req->self)	669	if (req->self)
471	{	670	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	671	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	672	SvREFCNT_dec (req->self);
474	}	673	}
475		674
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	675	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
479	SvREFCNT_dec (req->callback);	679	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481		680
482	if (req->type == REQ_READDIR)
483	free (req->data2ptr);
484
485	Safefree (req);	681	free (req);
486	}	682	}
487		683
		684	static void
488	static void req_cancel_subs (aio_req grp)	685	req_cancel_subs (aio_req grp)
489	{	686	{
490	aio_req sub;
491
492	if (grp->type != REQ_GROUP)	687	if (grp->type != EIO_GROUP)
493	return;	688	return;
494		689
495	SvREFCNT_dec (grp->fh2);	690	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	691	grp->sv2 = 0;
497		692
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	693	eio_grp_cancel (grp);
499	req_cancel (sub);
500	}	694	}
501		695
502	static void req_cancel (aio_req req)	696	static void ecb_cold
		697	create_respipe (void)
503	{	698	{
504	req->flags \|= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
505		700	croak ("IO::AIO: unable to initialize result pipe");
506	req_cancel_subs (req);
507	}	701	}
508		702
509	static int poll_cb (int max)	703	static void
		704	poll_wait (void)
510	{	705	{
511	dSP;	706	while (eio_nreqs ())
512	int count = 0;	707	{
513	int do_croak = 0;	708	int size;
514	aio_req req;
515		709
		710	X_LOCK (reslock);
		711	size = res_queue.size;
		712	X_UNLOCK (reslock);
		713
		714	if (size)
		715	return;
		716
		717	etp_maybe_start_thread ();
		718
		719	s_epipe_wait (&respipe);
		720	}
		721	}
		722
		723	static int
		724	poll_cb (void)
		725	{
516	for (;;)	726	for (;;)
517	{	727	{
518	while (max <= 0 \|\| count < max)	728	int res = eio_poll ();
		729
		730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding \|\| max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		753	# define munmap(addr,length) EIO_ENOSYS ()
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int ecb_cold
		768	mmap_free (pTHX_ SV sv, MAGIC mg)
		769	{
		770	int old_errno = errno;
		771	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		772	errno = old_errno;
		773
		774	mg->mg_obj = 0; /* just in case */
		775
		776	SvREADONLY_off (sv);
		777
		778	if (SvPVX (sv) != mg->mg_ptr)
		779	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		780
		781	SvCUR_set (sv, 0);
		782	SvPVX (sv) = 0;
		783	SvOK_off (sv);
		784
		785	return 0;
		786	}
		787
		788	static MGVTBL mmap_vtbl = {
		789	0, 0, 0, 0, mmap_free
		790	};
		791
		792	/*****************************************************************************/
		793
		794	static SV *
		795	get_cb (SV *cb_sv)
		796	{
		797	SvGETMAGIC (cb_sv);
		798	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		799	}
		800
		801	static aio_req ecb_noinline
		802	dreq (SV *callback)
		803	{
		804	SV *cb_cv;
		805	aio_req req;
		806	int req_pri = next_pri;
		807	next_pri = EIO_PRI_DEFAULT;
		808
		809	cb_cv = get_cb (callback);
		810
		811	req = calloc (sizeof (*req), 1);
		812	if (!req)
		813	croak ("out of memory during eio_req allocation");
		814
		815	req->callback = SvREFCNT_inc (cb_cv);
		816	req->pri = req_pri;
		817
		818	return req;
		819	}
		820
		821	#define dREQ \
		822	aio_req req = dreq (callback); \
		823
		824	#define REQ_SEND \
		825	PUTBACK; \
		826	req_submit (req); \
		827	SPAGAIN; \
		828	\
		829	if (GIMME_V != G_VOID) \
		830	XPUSHs (req_sv (req, aio_req_stash));
		831
		832	ecb_inline void
		833	req_set_path (aio_req req, SV path, SV wdsv, SV pathsv, eio_wd wd, void **ptr)
		834	{
		835	if (expect_false (SvROK (path)))
		836	{
		837	SV *rv = SvRV (path);
		838	SV *wdob;
		839
		840	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
519	{	841	{
520	LOCK (reslock);	842	path = AvARRAY (rv)[1];
521	req = reqq_shift (&res_queue);	843	wdob = AvARRAY (rv)[0];
522		844
523	if (req)	845	if (SvOK (wdob))
524	{	846	{
525	--npending;	847	*wd = SvAIO_WD (wdob);
526		848	*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	}	849	}
550	else	850	else
551	{	851	*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	}	852	}
		853	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		854	{
		855	*wd = (aio_wd)(long)SvIVX (rv);
		856	*wdsv = SvREFCNT_inc_NN (rv);
		857	*ptr = ".";
		858	return; /* path set to "." */
		859	}
		860	else
		861	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		862	}
572		863
573	if (nreqs <= max_outstanding)	864	*pathsv = newSVsv (path);
		865	ptr = SvPVbyte_nolen (pathsv);
		866	}
		867
		868	static void ecb_noinline
		869	req_set_path1 (aio_req req, SV *path)
		870	{
		871	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		872	}
		873
		874	static void ecb_noinline
		875	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		876	{
		877	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		878
		879	switch (SvTYPE (rv))
		880	{
		881	case SVt_PVIO:
		882	case SVt_PVLV:
		883	case SVt_PVGV:
		884	req->type = type_fh;
		885	req->sv1 = newSVsv (fh_or_path);
		886	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
574	break;	887	break;
575		888
576	poll_wait ();	889	default:
577		890	req->type = type_path;
578	max = 0;	891	req_set_path1 (req, fh_or_path);
		892	break;
579	}	893	}
580
581	return count;
582	}	894	}
583		895
584	static void aio_proc(void arg);	896	XS(boot_IO__AIO) ecb_cold;
585		897
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	898	MODULE = IO::AIO PACKAGE = IO::AIO
1117		899
1118	PROTOTYPES: ENABLE	900	PROTOTYPES: ENABLE
1119		901
1120	BOOT:	902	BOOT:
1121	{	903	{
		904	static const struct {
		905	const char *name;
		906	IV iv;
		907	} *civ, const_iv[] = {
		908	# define const_niv(name, value) { # name, (IV) value },
		909	# define const_iv(name) { # name, (IV) name },
		910	# define const_eio(name) { # name, (IV) EIO_ ## name },
		911
		912	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		913
		914	const_iv (ENOSYS)
		915	const_iv (EXDEV)
		916	const_iv (EBADR)
		917
		918	const_iv (O_RDONLY)
		919	const_iv (O_WRONLY)
		920	const_iv (O_RDWR)
		921	const_iv (O_CREAT)
		922	const_iv (O_TRUNC)
		923	const_iv (O_EXCL)
		924	const_iv (O_APPEND)
		925
		926	const_iv (O_ASYNC)
		927	const_iv (O_DIRECT)
		928	const_iv (O_NOATIME)
		929
		930	const_iv (O_CLOEXEC)
		931	const_iv (O_NOCTTY)
		932	const_iv (O_NOFOLLOW)
		933	const_iv (O_NONBLOCK)
		934	const_iv (O_EXEC)
		935	const_iv (O_SEARCH)
		936	const_iv (O_DIRECTORY)
		937	const_iv (O_DSYNC)
		938	const_iv (O_RSYNC)
		939	const_iv (O_SYNC)
		940	const_iv (O_TTY_INIT)
		941
		942	const_iv (S_IFIFO)
		943	const_iv (S_IFCHR)
		944	const_iv (S_IFBLK)
		945	const_iv (S_IFLNK)
		946	const_iv (S_IFREG)
		947	const_iv (S_IFDIR)
		948	const_iv (S_IFWHT)
		949	const_iv (S_IFSOCK)
		950	const_iv (S_IFMT)
		951
		952	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		953	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		954	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		955	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		956	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		957	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		958
		959	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		960	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		961	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		962	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		963	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		964
		965	const_iv (ST_RDONLY)
		966	const_iv (ST_NOSUID)
		967	const_iv (ST_NODEV)
		968	const_iv (ST_NOEXEC)
		969	const_iv (ST_SYNCHRONOUS)
		970	const_iv (ST_MANDLOCK)
		971	const_iv (ST_WRITE)
		972	const_iv (ST_APPEND)
		973	const_iv (ST_IMMUTABLE)
		974	const_iv (ST_NOATIME)
		975	const_iv (ST_NODIRATIME)
		976	const_iv (ST_RELATIME)
		977
		978	const_iv (PROT_NONE)
		979	const_iv (PROT_EXEC)
		980	const_iv (PROT_READ)
		981	const_iv (PROT_WRITE)
		982
		983	/const_iv (MAP_FIXED)/
		984	const_iv (MAP_PRIVATE)
		985	const_iv (MAP_SHARED)
		986	const_iv (MAP_ANONYMOUS)
		987
		988	/* linuxish */
		989	const_iv (MAP_HUGETLB)
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
		994
		995	const_iv (FIEMAP_FLAG_SYNC)
		996	const_iv (FIEMAP_FLAG_XATTR)
		997	const_iv (FIEMAP_FLAGS_COMPAT)
		998	const_iv (FIEMAP_EXTENT_LAST)
		999	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1000	const_iv (FIEMAP_EXTENT_DELALLOC)
		1001	const_iv (FIEMAP_EXTENT_ENCODED)
		1002	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1003	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1004	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1005	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1006	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1007	const_iv (FIEMAP_EXTENT_MERGED)
		1008	const_iv (FIEMAP_EXTENT_SHARED)
		1009
		1010	const_iv (SPLICE_F_MOVE)
		1011	const_iv (SPLICE_F_NONBLOCK)
		1012	const_iv (SPLICE_F_MORE)
		1013	const_iv (SPLICE_F_GIFT)
		1014
		1015	const_iv (SEEK_DATA)
		1016	const_iv (SEEK_HOLE)
		1017
		1018	/* libeio constants */
		1019	const_eio (SEEK_SET)
		1020	const_eio (SEEK_CUR)
		1021	const_eio (SEEK_END)
		1022
		1023	const_eio (MCL_FUTURE)
		1024	const_eio (MCL_CURRENT)
		1025
		1026	const_eio (MS_ASYNC)
		1027	const_eio (MS_INVALIDATE)
		1028	const_eio (MS_SYNC)
		1029
		1030	const_eio (MT_MODIFY)
		1031
		1032	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1033	const_eio (SYNC_FILE_RANGE_WRITE)
		1034	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1035
		1036	const_eio (FALLOC_FL_KEEP_SIZE)
		1037	const_eio (FALLOC_FL_PUNCH_HOLE)
		1038	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1039	const_eio (FALLOC_FL_ZERO_RANGE)
		1040
		1041	const_eio (READDIR_DENTS)
		1042	const_eio (READDIR_DIRS_FIRST)
		1043	const_eio (READDIR_STAT_ORDER)
		1044	const_eio (READDIR_FOUND_UNKNOWN)
		1045
		1046	const_eio (DT_UNKNOWN)
		1047	const_eio (DT_FIFO)
		1048	const_eio (DT_CHR)
		1049	const_eio (DT_DIR)
		1050	const_eio (DT_BLK)
		1051	const_eio (DT_REG)
		1052	const_eio (DT_LNK)
		1053	const_eio (DT_SOCK)
		1054	const_eio (DT_WHT)
		1055	};
		1056
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	1057	aio_stash = gv_stashpv ("IO::AIO" , 1);
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1058	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1059	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1060	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1126		1061
1127	create_pipe ();	1062	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1063	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1129	}
1130		1064
		1065	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1066
		1067	reinit ();
		1068	}
		1069
1131	void	1070	void
1132	min_parallel (int nthreads)	1071	reinit ()
1133	PROTOTYPE: $	1072	PROTOTYPE:
1134		1073
1135	void	1074	void
1136	max_parallel (int nthreads)	1075	max_poll_reqs (unsigned int nreqs)
1137	PROTOTYPE: $
1138
1139	int
1140	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	1076	PROTOTYPE: $
1142	CODE:	1077	CODE:
1143	RETVAL = max_outstanding;	1078	eio_set_max_poll_reqs (nreqs);
		1079
		1080	void
		1081	max_poll_time (double nseconds)
		1082	PROTOTYPE: $
		1083	CODE:
		1084	eio_set_max_poll_time (nseconds);
		1085
		1086	void
		1087	min_parallel (unsigned int nthreads)
		1088	PROTOTYPE: $
		1089	CODE:
		1090	eio_set_min_parallel (nthreads);
		1091
		1092	void
		1093	max_parallel (unsigned int nthreads)
		1094	PROTOTYPE: $
		1095	CODE:
		1096	eio_set_max_parallel (nthreads);
		1097
		1098	void
		1099	max_idle (unsigned int nthreads)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_max_idle (nthreads);
		1103
		1104	void
		1105	idle_timeout (unsigned int seconds)
		1106	PROTOTYPE: $
		1107	CODE:
		1108	eio_set_idle_timeout (seconds);
		1109
		1110	void
		1111	max_outstanding (unsigned int maxreqs)
		1112	PROTOTYPE: $
		1113	CODE:
1144	max_outstanding = maxreqs;	1114	max_outstanding = maxreqs;
1145	OUTPUT:
1146	RETVAL
1147		1115
1148	void	1116	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1117	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:	1118	PPCODE:
1156	{	1119	{
1157	dREQ;	1120	dREQ;
1158		1121
1159	req->type = REQ_OPEN;	1122	req->type = EIO_WD_OPEN;
1160	req->data = newSVsv (pathname);	1123	req_set_path1 (req, pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);
1162	req->fd = flags;
1163	req->mode = mode;
1164		1124
1165	REQ_SEND;	1125	REQ_SEND;
1166	}	1126	}
1167		1127
1168	void	1128	void
		1129	aio_open (SV8 pathname, int flags, int mode, SV callback = &PL_sv_undef)
		1130	PPCODE:
		1131	{
		1132	dREQ;
		1133
		1134	req->type = EIO_OPEN;
		1135	req_set_path1 (req, pathname);
		1136	req->int1 = flags;
		1137	req->int2 = mode;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
1169	aio_close (fh,callback=&PL_sv_undef)	1143	aio_fsync (SV fh, SV callback = &PL_sv_undef)
1170	SV * fh
1171	SV * callback
1172	PROTOTYPE: $;$
1173	ALIAS:	1144	ALIAS:
1174	aio_close = REQ_CLOSE
1175	aio_fsync = REQ_FSYNC	1145	aio_fsync = EIO_FSYNC
1176	aio_fdatasync = REQ_FDATASYNC	1146	aio_fdatasync = EIO_FDATASYNC
		1147	aio_syncfs = EIO_SYNCFS
1177	PPCODE:	1148	PPCODE:
1178	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1179	dREQ;	1151	dREQ;
1180		1152
1181	req->type = ix;	1153	req->type = ix;
1182	req->fh = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1184		1156
1185	REQ_SEND (req);	1157	REQ_SEND;
1186	}	1158	}
1187		1159
1188	void	1160	void
		1161	aio_sync_file_range (SV fh, off_t offset, size_t nbytes, UV flags, SV callback = &PL_sv_undef)
		1162	PPCODE:
		1163	{
		1164	int fd = s_fileno_croak (fh, 0);
		1165	dREQ;
		1166
		1167	req->type = EIO_SYNC_FILE_RANGE;
		1168	req->sv1 = newSVsv (fh);
		1169	req->int1 = fd;
		1170	req->offs = offset;
		1171	req->size = nbytes;
		1172	req->int2 = flags;
		1173
		1174	REQ_SEND;
		1175	}
		1176
		1177	void
		1178	aio_allocate (SV fh, int mode, off_t offset, size_t len, SV callback = &PL_sv_undef)
		1179	PPCODE:
		1180	{
		1181	int fd = s_fileno_croak (fh, 0);
		1182	dREQ;
		1183
		1184	req->type = EIO_FALLOCATE;
		1185	req->sv1 = newSVsv (fh);
		1186	req->int1 = fd;
		1187	req->int2 = mode;
		1188	req->offs = offset;
		1189	req->size = len;
		1190
		1191	REQ_SEND;
		1192	}
		1193
		1194	void
		1195	aio_close (SV fh, SV callback = &PL_sv_undef)
		1196	PPCODE:
		1197	{
		1198	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1199	int fd = s_fileno_croak (fh, 0);
		1200	dREQ;
		1201
		1202	if (expect_false (close_fd < 0))
		1203	{
		1204	int pipefd [2];
		1205
		1206	if (
		1207	#ifdef _WIN32
		1208	_pipe (pipefd, 1, _O_BINARY) < 0
		1209	#else
		1210	pipe (pipefd) < 0
		1211	\|\| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1212	#endif
		1213	\|\| close (pipefd [1]) < 0
		1214	)
		1215	abort (); /D/
		1216
		1217	close_fd = pipefd [0];
		1218	}
		1219
		1220	req->type = EIO_DUP2;
		1221	req->int1 = close_fd;
		1222	req->sv2 = newSVsv (fh);
		1223	req->int2 = fd;
		1224
		1225	REQ_SEND;
		1226	}
		1227
		1228	void
		1229	aio_seek (SV fh, SV offset, int whence, SV *callback = &PL_sv_undef)
		1230	PPCODE:
		1231	{
		1232	int fd = s_fileno_croak (fh, 0);
		1233	dREQ;
		1234
		1235	req->type = EIO_SEEK;
		1236	req->sv1 = newSVsv (fh);
		1237	req->int1 = fd;
		1238	req->offs = SvVAL64 (offset);
		1239	req->int2 = whence;
		1240
		1241	REQ_SEND;
		1242	}
		1243
		1244	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1245	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:	1246	ALIAS:
1197	aio_read = REQ_READ	1247	aio_read = EIO_READ
1198	aio_write = REQ_WRITE	1248	aio_write = EIO_WRITE
1199	PROTOTYPE: $$$$$;$
1200	PPCODE:	1249	PPCODE:
1201	{	1250	{
1202	aio_req req;
1203	STRLEN svlen;	1251	STRLEN svlen;
		1252	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1204	char *svptr = SvPVbyte (data, svlen);	1253	char *svptr = SvPVbyte (data, svlen);
1205		1254	UV len = SvUV (length);
1206	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);
1208		1255
1209	if (dataoffset < 0)	1256	if (dataoffset < 0)
1210	dataoffset += svlen;	1257	dataoffset += svlen;
1211		1258
1212	if (dataoffset < 0 \|\| dataoffset > svlen)	1259	if (dataoffset < 0 \|\| dataoffset > svlen)
1213	croak ("data offset outside of string");	1260	croak ("dataoffset outside of data scalar");
1214		1261
1215	if (ix == REQ_WRITE)	1262	if (ix == EIO_WRITE)
1216	{	1263	{
1217	/* write: check length and adjust. */	1264	/* write: check length and adjust. */
1218	if (length < 0 \|\| length + dataoffset > svlen)	1265	if (!SvOK (length) \|\| len + dataoffset > svlen)
1219	length = svlen - dataoffset;	1266	len = svlen - dataoffset;
1220	}	1267	}
1221	else	1268	else
1222	{	1269	{
1223	/* read: grow scalar as necessary */	1270	/* read: check type and grow scalar as necessary */
		1271	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
1224	svptr = SvGROW (data, length + dataoffset);	1272	svptr = sv_grow (data, len + dataoffset + 1);
		1273	else if (SvCUR (data) < len + dataoffset)
		1274	croak ("length + dataoffset outside of scalar, and cannot grow");
1225	}	1275	}
1226
1227	if (length < 0)
1228	croak ("length must not be negative");
1229		1276
1230	{	1277	{
1231	dREQ;	1278	dREQ;
1232		1279
1233	req->type = ix;	1280	req->type = ix;
1234	req->fh = newSVsv (fh);	1281	req->sv1 = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1282	req->int1 = fd;
1236	: IoOFP (sv_2io (fh)));	1283	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237	req->offset = offset;	1284	req->size = len;
1238	req->length = length;
1239	req->data = SvREFCNT_inc (data);	1285	req->sv2 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	1286	req->ptr2 = (char *)svptr + dataoffset;
		1287	req->stroffset = dataoffset;
1241		1288
1242	if (!SvREADONLY (data))	1289	if (!SvREADONLY (data))
1243	{	1290	{
1244	SvREADONLY_on (data);	1291	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	1292	req->flags \|= FLAG_SV2_RO_OFF;
1246	}	1293	}
1247		1294
1248	REQ_SEND;	1295	REQ_SEND;
1249	}	1296	}
1250	}	1297	}
1251		1298
1252	void	1299	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1300	aio_readlink (SV8 pathname, SV callback = &PL_sv_undef)
1254	SV * out_fh	1301	ALIAS:
1255	SV * in_fh	1302	aio_readlink = EIO_READLINK
1256	UV in_offset	1303	aio_realpath = EIO_REALPATH
1257	UV length
1258	SV * callback
1259	PROTOTYPE: $$$$;$
1260	PPCODE:	1304	PPCODE:
1261	{	1305	{
		1306	dREQ;
		1307
		1308	req->type = ix;
		1309	req_set_path1 (req, pathname);
		1310
		1311	REQ_SEND;
		1312	}
		1313
		1314	void
		1315	aio_sendfile (SV out_fh, SV in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1316	PPCODE:
		1317	{
		1318	int ifd = s_fileno_croak (in_fh , 0);
		1319	int ofd = s_fileno_croak (out_fh, 1);
1262	dREQ;	1320	dREQ;
1263		1321
1264	req->type = REQ_SENDFILE;	1322	req->type = EIO_SENDFILE;
1265	req->fh = newSVsv (out_fh);	1323	req->sv1 = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1324	req->int1 = ofd;
1267	req->fh2 = newSVsv (in_fh);	1325	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1326	req->int2 = ifd;
1269	req->offset = in_offset;	1327	req->offs = in_offset;
1270	req->length = length;	1328	req->size = length;
1271		1329
1272	REQ_SEND;	1330	REQ_SEND;
1273	}	1331	}
1274		1332
1275	void	1333	void
1276	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1334	aio_readahead (SV fh, off_t offset, size_t length, SV callback = &PL_sv_undef)
1277	SV * fh
1278	UV offset
1279	IV length
1280	SV * callback
1281	PROTOTYPE: $$$;$
1282	PPCODE:	1335	PPCODE:
1283	{	1336	{
		1337	int fd = s_fileno_croak (fh, 0);
1284	dREQ;	1338	dREQ;
1285		1339
1286	req->type = REQ_READAHEAD;	1340	req->type = EIO_READAHEAD;
1287	req->fh = newSVsv (fh);	1341	req->sv1 = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1342	req->int1 = fd;
1289	req->offset = offset;	1343	req->offs = offset;
1290	req->length = length;	1344	req->size = length;
1291		1345
1292	REQ_SEND;	1346	REQ_SEND;
1293	}	1347	}
1294		1348
1295	void	1349	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	1350	aio_stat (SV8 fh_or_path, SV callback = &PL_sv_undef)
1297	SV * fh_or_path
1298	SV * callback
1299	ALIAS:	1351	ALIAS:
1300	aio_stat = REQ_STAT	1352	aio_stat = EIO_STAT
1301	aio_lstat = REQ_LSTAT	1353	aio_lstat = EIO_LSTAT
		1354	aio_statvfs = EIO_STATVFS
1302	PPCODE:	1355	PPCODE:
1303	{	1356	{
1304	dREQ;	1357	dREQ;
1305		1358
1306	New (0, req->statdata, 1, Stat_t);	1359	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		1360
1326	REQ_SEND;	1361	REQ_SEND;
1327	}	1362	}
1328		1363
		1364	UV
		1365	major (UV dev)
		1366	ALIAS:
		1367	minor = 1
		1368	CODE:
		1369	RETVAL = ix ? major (dev) : minor (dev);
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	UV
		1374	makedev (UV maj, UV min)
		1375	CODE:
		1376	RETVAL = makedev (maj, min);
		1377	OUTPUT:
		1378	RETVAL
		1379
1329	void	1380	void
		1381	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback = &PL_sv_undef)
		1382	PPCODE:
		1383	{
		1384	dREQ;
		1385
		1386	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1387	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1388	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_truncate (SV8 fh_or_path, SV offset, SV *callback = &PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1400	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_chmod (SV8 fh_or_path, int mode, SV callback = &PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	dREQ;
		1410
		1411	req->int2 = mode;
		1412	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1413
		1414	REQ_SEND;
		1415	}
		1416
		1417	void
		1418	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback = &PL_sv_undef)
		1419	PPCODE:
		1420	{
		1421	dREQ;
		1422
		1423	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1424	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1425	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1426
		1427	REQ_SEND;
		1428	}
		1429
		1430	void
		1431	aio_readdirx (SV8 pathname, IV flags, SV callback = &PL_sv_undef)
		1432	PPCODE:
		1433	{
		1434	dREQ;
		1435
		1436	req->type = EIO_READDIR;
		1437	req->int1 = flags \| EIO_READDIR_DENTS \| EIO_READDIR_CUSTOM1;
		1438
		1439	if (flags & EIO_READDIR_DENTS)
		1440	req->int1 \|= EIO_READDIR_CUSTOM2;
		1441
		1442	req_set_path1 (req, pathname);
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_mkdir (SV8 pathname, int mode, SV callback = &PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->type = EIO_MKDIR;
		1454	req->int2 = mode;
		1455	req_set_path1 (req, pathname);
		1456
		1457	REQ_SEND;
		1458	}
		1459
		1460	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	1461	aio_unlink (SV8 pathname, SV callback = &PL_sv_undef)
1331	SV * pathname
1332	SV * callback
1333	ALIAS:	1462	ALIAS:
1334	aio_unlink = REQ_UNLINK	1463	aio_unlink = EIO_UNLINK
1335	aio_rmdir = REQ_RMDIR	1464	aio_rmdir = EIO_RMDIR
1336	aio_readdir = REQ_READDIR	1465	aio_readdir = EIO_READDIR
1337	PPCODE:	1466	PPCODE:
1338	{	1467	{
1339	dREQ;	1468	dREQ;
1340		1469
1341	req->type = ix;	1470	req->type = ix;
1342	req->data = newSVsv (pathname);	1471	req_set_path1 (req, pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	1472
1344
1345	REQ_SEND;	1473	REQ_SEND;
1346	}	1474	}
1347		1475
1348	void	1476	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1477	aio_link (SV8 oldpath, SV8 newpath, SV *callback = &PL_sv_undef)
1350	SV * oldpath
1351	SV * newpath
1352	SV * callback
1353	ALIAS:	1478	ALIAS:
1354	aio_link = REQ_LINK	1479	aio_link = EIO_LINK
1355	aio_symlink = REQ_SYMLINK	1480	aio_symlink = EIO_SYMLINK
1356	aio_rename = REQ_RENAME	1481	aio_rename = EIO_RENAME
1357	PPCODE:	1482	PPCODE:
1358	{	1483	{
		1484	eio_wd wd2 = 0;
1359	dREQ;	1485	dREQ;
1360		1486
1361	req->type = ix;	1487	req->type = ix;
1362	req->fh = newSVsv (oldpath);	1488	req_set_path1 (req, oldpath);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	1489	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1364	req->data = newSVsv (newpath);	1490	req->int3 = (long)wd2;
1365	req->dataptr = SvPVbyte_nolen (req->data);
1366		1491
1367	REQ_SEND;	1492	REQ_SEND;
1368	}	1493	}
1369		1494
1370	void	1495	void
1371	aio_busy (delay,callback=&PL_sv_undef)	1496	aio_mknod (SV8 pathname, int mode, UV dev, SV callback = &PL_sv_undef)
1372	double delay
1373	SV * callback
1374	PPCODE:	1497	PPCODE:
1375	{	1498	{
1376	dREQ;	1499	dREQ;
1377		1500
1378	req->type = REQ_BUSY;	1501	req->type = EIO_MKNOD;
1379	req->fd = delay < 0. ? 0 : delay;	1502	req->int2 = (mode_t)mode;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1503	req->offs = dev;
1381		1504	req_set_path1 (req, pathname);
		1505
1382	REQ_SEND;	1506	REQ_SEND;
1383	}	1507	}
1384		1508
1385	void	1509	void
1386	aio_group (callback=&PL_sv_undef)	1510	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
1387	SV * callback	1511	ALIAS:
1388	PROTOTYPE: ;$	1512	aio_mtouch = EIO_MTOUCH
		1513	aio_msync = EIO_MSYNC
1389	PPCODE:	1514	PPCODE:
1390	{	1515	{
		1516	STRLEN svlen;
		1517	char *svptr = SvPVbyte (data, svlen);
		1518	UV len = SvUV (length);
		1519
		1520	if (offset < 0)
		1521	offset += svlen;
		1522
		1523	if (offset < 0 \|\| offset > svlen)
		1524	croak ("offset outside of scalar");
		1525
		1526	if (!SvOK (length) \|\| len + offset > svlen)
		1527	len = svlen - offset;
		1528
		1529	{
		1530	dREQ;
		1531
		1532	req->type = ix;
		1533	req->sv2 = SvREFCNT_inc (data);
		1534	req->ptr2 = (char *)svptr + offset;
		1535	req->size = len;
		1536	req->int1 = flags;
		1537
		1538	REQ_SEND;
		1539	}
		1540	}
		1541
		1542	void
		1543	aio_mlock (SV8 data, IV offset = 0, SV length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1544	PPCODE:
		1545	{
		1546	STRLEN svlen;
		1547	char *svptr = SvPVbyte (data, svlen);
		1548	UV len = SvUV (length);
		1549
		1550	if (offset < 0)
		1551	offset += svlen;
		1552
		1553	if (offset < 0 \|\| offset > svlen)
		1554	croak ("offset outside of scalar");
		1555
		1556	if (!SvOK (length) \|\| len + offset > svlen)
		1557	len = svlen - offset;
		1558
		1559	{
		1560	dREQ;
		1561
		1562	req->type = EIO_MLOCK;
		1563	req->sv2 = SvREFCNT_inc (data);
		1564	req->ptr2 = (char *)svptr + offset;
		1565	req->size = len;
		1566
		1567	REQ_SEND;
		1568	}
		1569	}
		1570
		1571	void
		1572	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->type = EIO_MLOCKALL;
		1578	req->int1 = flags;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_fiemap (SV fh, off_t start, SV length, U32 flags, SV count, SV callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	int fd = s_fileno_croak (fh, 0);
1391	dREQ;	1588	dREQ;
1392		1589
1393	req->type = REQ_GROUP;	1590	req->type = EIO_CUSTOM;
1394	req_send (req);	1591	req->sv1 = newSVsv (fh);
		1592	req->int1 = fd;
1395		1593
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1594	req->feed = fiemap;
1397	}	1595	#if HAVE_FIEMAP
		1596	/* keep our fingers crossed that the next two types are 64 bit */
		1597	req->offs = start;
		1598	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1599	req->int2 = flags;
		1600	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1601	#endif
1398		1602
		1603	REQ_SEND;
		1604	}
		1605
1399	void	1606	void
1400	aio_nop (callback=&PL_sv_undef)	1607	aio_busy (double delay, SV *callback = &PL_sv_undef)
1401	SV * callback
1402	PPCODE:	1608	PPCODE:
1403	{	1609	{
1404	dREQ;	1610	dREQ;
1405		1611
1406	req->type = REQ_NOP;	1612	req->type = EIO_BUSY;
		1613	req->nv1 = delay < 0. ? 0. : delay;
1407		1614
1408	REQ_SEND;	1615	REQ_SEND;
1409	}	1616	}
1410		1617
		1618	void
		1619	aio_group (SV *callback = &PL_sv_undef)
		1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->type = EIO_GROUP;
		1625
		1626	PUTBACK;
		1627	req_submit (req);
		1628	SPAGAIN;
		1629
		1630	XPUSHs (req_sv (req, aio_grp_stash));
		1631	}
		1632
		1633	void
		1634	aio_nop (SV *callback = &PL_sv_undef)
		1635	ALIAS:
		1636	aio_nop = EIO_NOP
		1637	aio_sync = EIO_SYNC
		1638	PPCODE:
		1639	{
		1640	dREQ;
		1641
		1642	req->type = ix;
		1643
		1644	REQ_SEND;
		1645	}
		1646
1411	int	1647	int
1412	aioreq_pri (int pri = 0)	1648	aioreq_pri (int pri = NO_INIT)
1413	PROTOTYPE: ;$
1414	CODE:	1649	CODE:
1415	RETVAL = next_pri - PRI_BIAS;	1650	RETVAL = next_pri;
1416	if (items > 0)	1651	if (items > 0)
1417	{	1652	{
1418	if (pri < PRI_MIN) pri = PRI_MIN;	1653	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1419	if (pri > PRI_MAX) pri = PRI_MAX;	1654	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1420	next_pri = pri + PRI_BIAS;	1655	next_pri = pri;
1421	}	1656	}
1422	OUTPUT:	1657	OUTPUT:
1423	RETVAL	1658	RETVAL
1424		1659
1425	void	1660	void
1426	aioreq_nice (int nice = 0)	1661	aioreq_nice (int nice = 0)
1427	CODE:	1662	CODE:
1428	nice = next_pri - nice;	1663	nice = next_pri - nice;
1429	if (nice < PRI_MIN) nice = PRI_MIN;	1664	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1430	if (nice > PRI_MAX) nice = PRI_MAX;	1665	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1431	next_pri = nice + PRI_BIAS;	1666	next_pri = nice;
1432		1667
1433	void	1668	void
1434	flush ()	1669	flush ()
		1670	CODE:
		1671	while (eio_nreqs ())
		1672	{
		1673	poll_wait ();
		1674	poll_cb ();
		1675	}
		1676
		1677	int
		1678	poll ()
		1679	CODE:
		1680	poll_wait ();
		1681	RETVAL = poll_cb ();
		1682	OUTPUT:
		1683	RETVAL
		1684
		1685	int
		1686	poll_fileno ()
		1687	CODE:
		1688	RETVAL = s_epipe_fd (&respipe);
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
		1693	poll_cb (...)
1435	PROTOTYPE:	1694	PROTOTYPE:
1436	CODE:	1695	CODE:
1437	while (nreqs)
1438	{
1439	poll_wait ();
1440	poll_cb (0);	1696	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:	1697	OUTPUT:
1459	RETVAL	1698	RETVAL
1460		1699
		1700	void
		1701	poll_wait ()
		1702	CODE:
		1703	poll_wait ();
		1704
1461	int	1705	int
1462	poll_cb(...)	1706	nreqs ()
1463	PROTOTYPE:
1464	CODE:	1707	CODE:
1465	RETVAL = poll_cb (0);	1708	RETVAL = eio_nreqs ();
1466	OUTPUT:	1709	OUTPUT:
1467	RETVAL	1710	RETVAL
1468		1711
1469	int	1712	int
1470	poll_some(int max = 0)	1713	nready ()
1471	PROTOTYPE: $
1472	CODE:	1714	CODE:
1473	RETVAL = poll_cb (max);	1715	RETVAL = eio_nready ();
1474	OUTPUT:	1716	OUTPUT:
1475	RETVAL	1717	RETVAL
1476		1718
1477	void	1719	int
1478	poll_wait()	1720	npending ()
1479	PROTOTYPE:
1480	CODE:	1721	CODE:
1481	if (nreqs)	1722	RETVAL = eio_npending ();
1482	poll_wait ();
1483
1484	int
1485	nreqs()
1486	PROTOTYPE:
1487	CODE:
1488	RETVAL = nreqs;
1489	OUTPUT:	1723	OUTPUT:
1490	RETVAL	1724	RETVAL
1491		1725
1492	int	1726	int
1493	nready()	1727	nthreads ()
1494	PROTOTYPE:
1495	CODE:	1728	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1729	RETVAL = eio_nthreads ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1730	OUTPUT:
1500	RETVAL	1731	RETVAL
1501		1732
1502	int	1733	int
1503	npending()	1734	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1504	PROTOTYPE:	1735	CODE:
		1736	RETVAL = posix_fadvise (fh, offset, length, advice);
		1737	OUTPUT:
		1738	RETVAL
		1739
		1740	IV
		1741	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1742	CODE:
		1743	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1744	OUTPUT:
		1745	RETVAL
		1746
		1747	void
		1748	mmap (SV scalar, STRLEN length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
		1749	PPCODE:
		1750	sv_unmagic (scalar, MMAP_MAGIC);
		1751	{
		1752	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1753	void addr = (void )mmap (0, length, prot, flags, fd, offset);
		1754	if (addr == (void *)-1)
		1755	XSRETURN_NO;
		1756
		1757	sv_force_normal (scalar);
		1758
		1759	/* we store the length in mg_obj, as namlen is I32 :/ */
		1760	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1761	->mg_obj = (SV *)length;
		1762
		1763	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1764
		1765	if (!(prot & PROT_WRITE))
		1766	SvREADONLY_on (scalar);
		1767
		1768	if (SvLEN (scalar))
		1769	Safefree (SvPVX (scalar));
		1770
		1771	SvPVX (scalar) = (char *)addr;
		1772	SvCUR_set (scalar, length);
		1773	SvLEN_set (scalar, 0);
		1774	SvPOK_only (scalar);
		1775
		1776	XSRETURN_YES;
		1777	}
		1778
		1779	void
		1780	munmap (SV *scalar)
1505	CODE:	1781	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);	1782	sv_unmagic (scalar, MMAP_MAGIC);
1507	RETVAL = npending;	1783
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);	1784	int
		1785	madvise (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
		1786	ALIAS:
		1787	mprotect = 1
		1788	CODE:
		1789	{
		1790	STRLEN svlen;
		1791	void *addr = SvPVbyte (scalar, svlen);
		1792	STRLEN len = SvUV (length);
		1793
		1794	if (offset < 0)
		1795	offset += svlen;
		1796
		1797	if (offset < 0 \|\| offset > svlen)
		1798	croak ("offset outside of scalar");
		1799
		1800	if (!SvOK (length) \|\| len + offset > svlen)
		1801	len = svlen - offset;
		1802
		1803	addr = (void *)(((intptr_t)addr) + offset);
		1804	eio_page_align (&addr, &len);
		1805
		1806	switch (ix)
		1807	{
		1808	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1809	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1810	}
		1811	}
1509	OUTPUT:	1812	OUTPUT:
1510	RETVAL	1813	RETVAL
		1814
		1815	int
		1816	munlock (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef)
		1817	CODE:
		1818	{
		1819	STRLEN svlen;
		1820	void *addr = SvPVbyte (scalar, svlen);
		1821	size_t len = SvUV (length);
		1822
		1823	if (offset < 0)
		1824	offset += svlen;
		1825
		1826	if (offset < 0 \|\| offset > svlen)
		1827	croak ("offset outside of scalar");
		1828
		1829	if (!SvOK (length) \|\| len + offset > svlen)
		1830	len = svlen - offset;
		1831
		1832	addr = (void *)(((intptr_t)addr) + offset);
		1833	eio_page_align (&addr, &len);
		1834	#if _POSIX_MEMLOCK_RANGE
		1835	RETVAL = munlock (addr, len);
		1836	#else
		1837	RETVAL = EIO_ENOSYS ();
		1838	#endif
		1839	}
		1840	OUTPUT:
		1841	RETVAL
		1842
		1843	int
		1844	munlockall ()
		1845	CODE:
		1846	#if _POSIX_MEMLOCK
		1847	munlockall ();
		1848	#else
		1849	RETVAL = EIO_ENOSYS ();
		1850	#endif
		1851	OUTPUT:
		1852	RETVAL
		1853
		1854	int
		1855	splice (aio_rfd rfh, SV off_in, aio_wfd wfh, SV off_out, size_t length, unsigned int flags)
		1856	CODE:
		1857	{
		1858	#if HAVE_LINUX_SPLICE
		1859	loff_t off_in_, off_out_;
		1860	RETVAL = splice (
		1861	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1862	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1863	length, flags
		1864	);
		1865	#else
		1866	RETVAL = EIO_ENOSYS ();
		1867	#endif
		1868	}
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	int
		1873	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1874	CODE:
		1875	#if HAVE_LINUX_SPLICE
		1876	RETVAL = tee (rfh, wfh, length, flags);
		1877	#else
		1878	RETVAL = EIO_ENOSYS ();
		1879	#endif
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	int
		1884	pipesize (aio_rfd rfh, int new_size = -1)
		1885	PROTOTYPE: $;$
		1886	CODE:
		1887	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1888	if (new_size >= 0)
		1889	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1890	else
		1891	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1892	#else
		1893	errno = ENOSYS;
		1894	RETVAL = -1;
		1895	#endif
		1896	OUTPUT:
		1897	RETVAL
		1898
		1899	void _on_next_submit (SV *cb)
		1900	CODE:
		1901	SvREFCNT_dec (on_next_submit);
		1902	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1511		1903
1512	PROTOTYPES: DISABLE	1904	PROTOTYPES: DISABLE
		1905
		1906	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1907
		1908	BOOT:
		1909	{
		1910	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1911	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1912	}
		1913
		1914	void
		1915	DESTROY (SV *self)
		1916	CODE:
		1917	{
		1918	aio_wd wd = SvAIO_WD (self);
		1919	#if HAVE_AT
		1920	{
		1921	SV *callback = &PL_sv_undef;
		1922	dREQ; /* clobbers next_pri :/ */
		1923	next_pri = req->pri; /* restore next_pri */
		1924	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1925	req->type = EIO_WD_CLOSE;
		1926	req->wd = wd;
		1927	REQ_SEND;
		1928	}
		1929	#else
		1930	eio_wd_close_sync (wd);
		1931	#endif
		1932	}
1513		1933
1514	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1934	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515		1935
1516	void	1936	void
1517	cancel (aio_req_ornot req)	1937	cancel (aio_req_ornot req)
1518	CODE:	1938	CODE:
1519	req_cancel (req);	1939	eio_cancel (req);
1520		1940
1521	void	1941	void
1522	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1942	cb (aio_req_ornot req, SV *callback = NO_INIT)
1523	CODE:	1943	PPCODE:
		1944	{
		1945	if (GIMME_V != G_VOID)
		1946	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1947
		1948	if (items > 1)
		1949	{
		1950	SV *cb_cv = get_cb (callback);
		1951
1524	SvREFCNT_dec (req->callback);	1952	SvREFCNT_dec (req->callback);
1525	req->callback = newSVsv (callback);	1953	req->callback = SvREFCNT_inc (cb_cv);
		1954	}
		1955	}
1526		1956
1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1957	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528		1958
1529	void	1959	void
1530	add (aio_req grp, ...)	1960	add (aio_req grp, ...)
1531	PPCODE:	1961	PPCODE:
1532	{	1962	{
1533	int i;	1963	int i;
1534	aio_req req;
1535		1964
1536	if (grp->fd == 2)	1965	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1966	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		1967
1539	for (i = 1; i < items; ++i )	1968	for (i = 1; i < items; ++i )
1540	{	1969	{
		1970	aio_req req;
		1971
1541	if (GIMME_V != G_VOID)	1972	if (GIMME_V != G_VOID)
1542	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1973	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543		1974
1544	req = SvAIO_REQ (ST (i));	1975	req = SvAIO_REQ (ST (i));
1545		1976
1546	if (req)	1977	if (req)
1547	{	1978	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	}	1979	}
1560	}	1980	}
1561		1981
1562	void	1982	void
1563	cancel_subs (aio_req_ornot req)	1983	cancel_subs (aio_req_ornot req)
1572	AV *av;	1992	AV *av;
1573		1993
1574	grp->errorno = errno;	1994	grp->errorno = errno;
1575		1995
1576	av = newAV ();	1996	av = newAV ();
		1997	av_extend (av, items - 1);
1577		1998
1578	for (i = 1; i < items; ++i )	1999	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	2000	av_push (av, newSVsv (ST (i)));
1580		2001
1581	SvREFCNT_dec (grp->data);	2002	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	2003	grp->sv1 = (SV *)av;
1583	}	2004	}
1584		2005
1585	void	2006	void
1586	errno (aio_req grp, int errorno = errno)	2007	errno (aio_req grp, int errorno = errno)
1587	CODE:	2008	CODE:
1588	grp->errorno = errorno;	2009	grp->errorno = errorno;
1589		2010
1590	void	2011	void
1591	limit (aio_req grp, int limit)	2012	limit (aio_req grp, int limit)
1592	CODE:	2013	CODE:
1593	grp->fd2 = limit;	2014	eio_grp_limit (grp, limit);
1594	aio_grp_feed (grp);
1595		2015
1596	void	2016	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	2017	feed (aio_req grp, SV *callback = &PL_sv_undef)
1598	CODE:	2018	CODE:
1599	{	2019	{
1600	SvREFCNT_dec (grp->fh2);	2020	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	2021	grp->sv2 = newSVsv (callback);
		2022	grp->feed = aio_grp_feed;
1602		2023
1603	if (grp->fd2 <= 0)	2024	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	2025	grp->int2 = 2;
1605		2026
1606	aio_grp_feed (grp);	2027	eio_grp_limit (grp, grp->int2);
1607	}	2028	}
1608		2029

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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 1.232 by root, Sat Jun 13 00:06:13 2015 UTC

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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 1.232 by root, Sat Jun 13 00:06:13 2015 UTC