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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs.
Revision 1.230 by root, Tue Jun 3 01:30:33 2014 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"	9	#include "schmorp.h"
9		10
		11	#include <stddef.h>
		12	#include <stdlib.h>
		13	#include <errno.h>
10	#include <sys/types.h>	14	#include <sys/types.h>
11	#include <sys/stat.h>	15	#include <sys/stat.h>
12
13	#include <unistd.h>	16	#include <limits.h>
14	#include <fcntl.h>	17	#include <fcntl.h>
15	#include <signal.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
18	#include <pthread.h>	20	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
19		23
20	typedef void InputStream; / hack, but 5.6.1 is simply toooo old ;) */	24	/* the incompetent fool that created musl keeps __linux__, refuses
21	typedef void OutputStream; / hack, but 5.6.1 is simply toooo old ;) */	25	* to implement any linux standard apis, and also has no way to test
22	typedef void InOutStream; / hack, but 5.6.1 is simply toooo old ;) */	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
23		36
24	#if __ia64	37	/* perl namespace pollution */
25	# define STACKSIZE 65536	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
26	#else	83	#else
27	# define STACKSIZE 4096	84
		85	#include <sys/time.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
		144	# else
		145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
28	#endif	146	# endif
		147	#endif
29		148
30	enum {	149	/* defines all sorts of constants to 0 unless they are already defined */
31	REQ_QUIT,	150	#include "def0.h"
32	REQ_OPEN, REQ_CLOSE,
33	REQ_READ, REQ_WRITE, REQ_READAHEAD,
34	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
35	REQ_FSYNC, REQ_FDATASYNC,
36	REQ_UNLINK, REQ_RMDIR,
37	REQ_SYMLINK,
38	};
39		151
40	typedef struct aio_cb {	152	#ifndef makedev
41	struct aio_cb *volatile next;	153	# define makedev(maj,min) (((maj) << 8) \| (min))
		154	#endif
		155	#ifndef major
		156	# define major(dev) ((dev) >> 8)
		157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
42		161
43	int type;	162	#if PAGESIZE <= 0
		163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
44		165
45	int fd;	166	/*****************************************************************************/
46	off_t offset;
47	size_t length;
48	ssize_t result;
49	mode_t mode; /* open */
50	int errorno;
51	SV data, callback, *fh;
52	void dataptr, data2ptr;
53	STRLEN dataoffset;
54
55	Stat_t *statdata;
56	} aio_cb;
57
58	typedef aio_cb *aio_req;
59
60	static int started;
61	static volatile int nreqs;
62	static int max_outstanding = 1<<30;
63	static int respipe [2];
64
65	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
66	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
67	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
68
69	static volatile aio_req reqs, reqe; /* queue start, queue end */
70	static volatile aio_req ress, rese; /* queue start, queue end */
71
72	static void free_req (aio_req req)
73	{
74	if (req->data)
75	SvREFCNT_dec (req->data);
76
77	if (req->fh)
78	SvREFCNT_dec (req->fh);
79
80	if (req->statdata)
81	Safefree (req->statdata);
82
83	if (req->callback)
84	SvREFCNT_dec (req->callback);
85
86	Safefree (req);
87	}
88		167
89	static void	168	static void
90	poll_wait ()	169	fiemap (eio_req *req)
91	{	170	{
92	if (nreqs && !ress)	171	req->result = -1;
93	{
94	fd_set rfd;
95	FD_ZERO(&rfd);
96	FD_SET(respipe [0], &rfd);
97		172
98	select (respipe [0] + 1, &rfd, 0, 0, 0);	173	#if HAVE_FIEMAP
99	}	174	/* assume some c99 */
100	}	175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
101		178
102	static int	179	req->flags \|= EIO_FLAG_PTR1_FREE;
103	poll_cb ()	180
104	{	181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
105	dSP;	182	/* increase in 3.5kb steps */
		183	if (count < 0)
106	int count = 0;	184	count = 8;
107	int do_croak = 0;	185
108	aio_req req;	186	fiemap = malloc (sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		187	errno = ENOMEM;
		188	if (!fiemap)
		189	return;
		190
		191	req->ptr1 = fiemap;
		192
		193	fiemap->fm_start = req->offs;
		194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
		197
		198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		199	return;
		200
		201	if (req->int3 >= 0 /* not autosizing */
		202	\|\| !fiemap->fm_mapped_extents /* no more extents */
		203	\|\| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		204	goto done;
		205
		206	/* else we have to loop -
		207	* it would be tempting (actually I tried that first) to just query the
		208	* number of extents needed, but linux often feels like not returning all
		209	* extents, without telling us it left any out. this complicates
		210	* this quite a bit.
		211	*/
		212
		213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
109		214
110	for (;;)	215	for (;;)
111	{	216	{
112	pthread_mutex_lock (&reslock);	217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
113	req = ress;	218	char scratch[3072];
		219	struct fiemap incmap = (struct fiemap )scratch;
114		220
		221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		224	incmap->fm_flags = fiemap->fm_flags;
		225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		226
		227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		228	return;
		229
		230	if (!incmap->fm_mapped_extents)
		231	goto done;
		232
		233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		234	fiemap = realloc (fiemap, sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		235	errno = ENOMEM;
115	if (req)	236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
116	{	242	{
117	ress = req->next;	243	struct fiemap_extent *e = incmap->fm_extents + count;
118		244
119	if (!ress)	245	if (e->fe_logical + e->fe_length >= end_offset)
120	{	246	goto done;
121	rese = 0;
122		247
123	/* read any signals sent by the worker threads */	248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
124	char buf [32];	249
125	while (read (respipe [0], buf, 32) == 32)	250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
126	;	251	goto done;
127	}	252
128	}	253	}
		254	}
129		255
130	pthread_mutex_unlock (&reslock);	256	done:
		257	req->result = 0;
131		258
132	if (!req)	259	#else
133	break;	260	errno = ENOSYS;
		261	#endif
		262	}
134		263
135	nreqs--;	264	/*****************************************************************************/
136		265
137	if (req->type == REQ_QUIT)	266	enum {
138	started--;	267	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
139	else	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
		280	static void req_destroy (aio_req req);
		281	static void req_cancel (aio_req req);
		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
		297	/* must be called at most once */
		298	static SV *
		299	req_sv (aio_req req, HV *stash)
		300	{
		301	if (!req->self)
		302	{
		303	req->self = (SV *)newHV ();
		304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		305	}
		306
		307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		308	}
		309
		310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
		318	{
		319	MAGIC *mg;
		320
		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")))
		326	croak ("object of class IO::AIO::REQ expected");
		327
		328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		329
		330	return mg ? (aio_req)mg->mg_ptr : 0;
		331	}
		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
		345	aio_grp_feed (aio_req grp)
		346	{
		347	if (grp->sv2 && SvOK (grp->sv2))
		348	{
		349	dSP;
		350
		351	ENTER;
		352	SAVETMPS;
		353	PUSHMARK (SP);
		354	XPUSHs (req_sv (grp, aio_grp_stash));
		355	PUTBACK;
		356	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);
		357	SPAGAIN;
		358	FREETMPS;
		359	LEAVE;
		360	}
		361	}
		362
		363	static void
		364	req_submit (eio_req *req)
		365	{
		366	eio_submit (req);
		367
		368	if (expect_false (on_next_submit))
		369	{
		370	dSP;
		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);
		378	}
		379	}
		380
		381	static int
		382	req_invoke (eio_req *req)
		383	{
		384	if (req->flags & FLAG_SV2_RO_OFF)
		385	SvREADONLY_off (req->sv2);
		386
		387	if (!EIO_CANCELLED (req) && req->callback)
		388	{
		389	dSP;
		390	static SV sv_result_cache; / caches the result integer SV */
		391	SV *sv_result;
		392
		393	ENTER;
		394	SAVETMPS;
		395	PUSHMARK (SP);
		396	EXTEND (SP, 1);
		397
		398	/* do not recreate the result IV from scratch each time */
		399	if (expect_true (sv_result_cache))
140	{	400	{
141	int errorno = errno;	401	sv_result = sv_result_cache; sv_result_cache = 0;
142	errno = req->errorno;	402	SvIV_set (sv_result, req->result);
143		403	SvIOK_only (sv_result);
144	if (req->type == REQ_READ)
145	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
146
147	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
148	SvREADONLY_off (req->data);
149
150	if (req->statdata)
151	{
152	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
153	PL_laststatval = req->result;
154	PL_statcache = *(req->statdata);
155	}
156
157	ENTER;
158	PUSHMARK (SP);
159	XPUSHs (sv_2mortal (newSViv (req->result)));
160
161	if (req->type == REQ_OPEN)
162	{
163	/* convert fd to fh */
164	SV *fh;
165
166	PUTBACK;
167	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
168	SPAGAIN;
169
170	fh = SvREFCNT_inc (POPs);
171
172	PUSHMARK (SP);
173	XPUSHs (sv_2mortal (fh));
174	}
175
176	if (SvOK (req->callback))
177	{
178	PUTBACK;
179	call_sv (req->callback, G_VOID \| G_EVAL);
180	SPAGAIN;
181
182	if (SvTRUE (ERRSV))
183	{
184	free_req (req);
185	croak (0);
186	}
187	}
188
189	LEAVE;
190
191	errno = errorno;
192	count++;
193	}
194
195	free_req (req);
196	}
197
198	return count;
199	}
200
201	static void aio_proc(void arg);
202
203	static void
204	start_thread (void)
205	{
206	sigset_t fullsigset, oldsigset;
207	pthread_t tid;
208	pthread_attr_t attr;
209
210	pthread_attr_init (&attr);
211	pthread_attr_setstacksize (&attr, STACKSIZE);
212	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
213
214	sigfillset (&fullsigset);
215	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
216
217	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
218	started++;
219
220	sigprocmask (SIG_SETMASK, &oldsigset, 0);
221	}
222
223	static void
224	send_req (aio_req req)
225	{
226	nreqs++;
227
228	pthread_mutex_lock (&reqlock);
229
230	req->next = 0;
231
232	if (reqe)
233	{
234	reqe->next = req;
235	reqe = req;
236	}
237	else
238	reqe = reqs = req;
239
240	pthread_cond_signal (&reqwait);
241	pthread_mutex_unlock (&reqlock);
242
243	if (nreqs > max_outstanding)
244	for (;;)
245	{
246	poll_cb ();
247
248	if (nreqs <= max_outstanding)
249	break;
250
251	poll_wait ();
252	}
253	}
254
255	static void
256	end_thread (void)
257	{
258	aio_req req;
259	Newz (0, req, 1, aio_cb);
260	req->type = REQ_QUIT;
261
262	send_req (req);
263	}
264
265	static void min_parallel (int nthreads)
266	{
267	while (nthreads > started)
268	start_thread ();
269	}
270
271	static void max_parallel (int nthreads)
272	{
273	int cur = started;
274
275	while (cur > nthreads)
276	{
277	end_thread ();
278	cur--;
279	}
280
281	while (started > nthreads)
282	{
283	poll_wait ();
284	poll_cb ();
285	}
286	}
287
288	static void create_pipe ()
289	{
290	if (pipe (respipe))
291	croak ("unable to initialize result pipe");
292
293	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
294	croak ("cannot set result pipe to nonblocking mode");
295
296	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
297	croak ("cannot set result pipe to nonblocking mode");
298	}
299
300	static void atfork_prepare (void)
301	{
302	pthread_mutex_lock (&reqlock);
303	pthread_mutex_lock (&reslock);
304	}
305
306	static void atfork_parent (void)
307	{
308	pthread_mutex_unlock (&reslock);
309	pthread_mutex_unlock (&reqlock);
310	}
311
312	static void atfork_child (void)
313	{
314	aio_req prv;
315
316	int restart = started;
317	started = 0;
318
319	while (reqs)
320	{
321	prv = reqs;
322	reqs = prv->next;
323	free_req (prv);
324	}
325
326	reqs = reqe = 0;
327
328	while (ress)
329	{
330	prv = ress;
331	ress = prv->next;
332	free_req (prv);
333	}
334
335	ress = rese = 0;
336
337	atfork_parent ();
338
339	min_parallel (restart);
340	}
341
342	/*****************************************************************************/
343	/* work around various missing functions */
344
345	#if !HAVE_PREADWRITE
346	# define pread aio_pread
347	# define pwrite aio_pwrite
348
349	/*
350	* make our pread/pwrite safe against themselves, but not against
351	* normal read/write by using a mutex. slows down execution a lot,
352	* but that's your problem, not mine.
353	*/
354	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;
355
356	static ssize_t
357	pread (int fd, void *buf, size_t count, off_t offset)
358	{
359	ssize_t res;
360	off_t ooffset;
361
362	pthread_mutex_lock (&iolock);
363	ooffset = lseek (fd, 0, SEEK_CUR);
364	lseek (fd, offset, SEEK_SET);
365	res = read (fd, buf, count);
366	lseek (fd, ooffset, SEEK_SET);
367	pthread_mutex_unlock (&iolock);
368
369	return res;
370	}
371
372	static ssize_t
373	pwrite (int fd, void *buf, size_t count, off_t offset)
374	{
375	ssize_t res;
376	off_t ooffset;
377
378	pthread_mutex_lock (&iolock);
379	ooffset = lseek (fd, 0, SEEK_CUR);
380	lseek (fd, offset, SEEK_SET);
381	res = write (fd, buf, count);
382	lseek (fd, offset, SEEK_SET);
383	pthread_mutex_unlock (&iolock);
384
385	return res;
386	}
387	#endif
388
389	#if !HAVE_FDATASYNC
390	# define fdatasync fsync
391	#endif
392
393	#if !HAVE_READAHEAD
394	# define readahead aio_readahead
395
396	static char readahead_buf[4096];
397
398	static ssize_t
399	readahead (int fd, off_t offset, size_t count)
400	{
401	while (count > 0)
402	{
403	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
404
405	pread (fd, readahead_buf, len, offset);
406	offset += len;
407	count -= len;
408	}
409
410	errno = 0;
411	}
412	#endif
413
414	/*****************************************************************************/
415
416	static void *
417	aio_proc (void *thr_arg)
418	{
419	aio_req req;
420	int type;
421
422	do
423	{
424	pthread_mutex_lock (&reqlock);
425
426	for (;;)
427	{
428	req = reqs;
429
430	if (reqs)
431	{
432	reqs = reqs->next;
433	if (!reqs) reqe = 0;
434	}
435
436	if (req)
437	break;
438
439	pthread_cond_wait (&reqwait, &reqlock);
440	}
441
442	pthread_mutex_unlock (&reqlock);
443
444	errno = 0; /* strictly unnecessary */
445
446	type = req->type;
447
448	switch (type)
449	{
450	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
451	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
452
453	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
454
455	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
456	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
457	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
458
459	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
460	case REQ_CLOSE: req->result = close (req->fd); break;
461	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
462	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
463	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
464
465	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
466	case REQ_FSYNC: req->result = fsync (req->fd); break;
467
468	case REQ_QUIT:
469	break;
470
471	default:
472	req->result = ENOSYS;
473	break;
474	}
475
476	req->errorno = errno;
477
478	pthread_mutex_lock (&reslock);
479
480	req->next = 0;
481
482	if (rese)
483	{
484	rese->next = req;
485	rese = req;
486	}	404	}
487	else	405	else
488	{	406	{
489	rese = ress = req;	407	sv_result = newSViv (req->result);
490		408	SvREADONLY_on (sv_result);
491	/* write a dummy byte to the pipe so fh becomes ready */
492	write (respipe [1], &respipe, 1);
493	}	409	}
494		410
495	pthread_mutex_unlock (&reslock);	411	switch (req->type)
		412	{
		413	case EIO_WD_OPEN:
		414	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		415	break;
		416
		417	case EIO_READDIR:
		418	{
		419	SV *rv = &PL_sv_undef;
		420
		421	if (req->result >= 0)
		422	{
		423	int i;
		424	char names = (char )req->ptr2;
		425	eio_dirent ent = (eio_dirent )req->ptr1; /* might be 0 */
		426	AV *av = newAV ();
		427
		428	av_extend (av, req->result - 1);
		429
		430	for (i = 0; i < req->result; ++i)
		431	{
		432	if (req->int1 & EIO_READDIR_DENTS)
		433	{
		434	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		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
		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);
		464	names += SvCUR (name) + 1;
		465	}
		466	}
		467
		468	rv = sv_2mortal (newRV_noinc ((SV *)av));
		469	}
		470
		471	PUSHs (rv);
		472
		473	if (req->int1 & EIO_READDIR_CUSTOM1)
		474	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 \| EIO_READDIR_CUSTOM2))));
		475	}
		476	break;
		477
		478	case EIO_OPEN:
		479	{
		480	/* convert fd to fh */
		481	SV *fh = &PL_sv_undef;
		482
		483	if (req->result >= 0)
		484	{
		485	GV gv = (GV )sv_newmortal ();
		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);
		492
		493	symlen = snprintf (
		494	sym,
		495	sizeof (sym),
		496	"%s&=%d",
		497	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		498	(int)req->result
		499	);
		500
		501	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		502	fh = (SV *)gv;
		503	}
		504
		505	PUSHs (fh);
		506	}
		507	break;
		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
		546	case EIO_GROUP:
		547	req->int1 = 2; /* mark group as finished */
		548
		549	if (req->sv1)
		550	{
		551	int i;
		552	AV av = (AV )req->sv1;
		553
		554	EXTEND (SP, AvFILL (av) + 1);
		555	for (i = 0; i <= AvFILL (av); ++i)
		556	PUSHs (*av_fetch (av, i, 0));
		557	}
		558	break;
		559
		560	case EIO_NOP:
		561	case EIO_BUSY:
		562	break;
		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
		641	default:
		642	PUSHs (sv_result);
		643	break;
		644	}
		645
		646	errno = req->errorno;
		647
		648	PUTBACK;
		649	call_sv (req->callback, G_VOID \| G_EVAL \| G_DISCARD);
		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;
		656
		657	FREETMPS;
		658	LEAVE;
		659
		660	PUTBACK;
496	}	661	}
497	while (type != REQ_QUIT);	662
		663	return !!SvTRUE (ERRSV);
		664	}
		665
		666	static void
		667	req_destroy (aio_req req)
		668	{
		669	if (req->self)
		670	{
		671	sv_unmagic (req->self, PERL_MAGIC_ext);
		672	SvREFCNT_dec (req->self);
		673	}
		674
		675	SvREFCNT_dec (req->sv1);
		676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
		679	SvREFCNT_dec (req->callback);
		680
		681	free (req);
		682	}
		683
		684	static void
		685	req_cancel_subs (aio_req grp)
		686	{
		687	if (grp->type != EIO_GROUP)
		688	return;
		689
		690	SvREFCNT_dec (grp->sv2);
		691	grp->sv2 = 0;
		692
		693	eio_grp_cancel (grp);
		694	}
		695
		696	static void ecb_cold
		697	create_respipe (void)
		698	{
		699	if (s_epipe_renew (&respipe))
		700	croak ("IO::AIO: unable to initialize result pipe");
		701	}
		702
		703	static void
		704	poll_wait (void)
		705	{
		706	while (eio_nreqs ())
		707	{
		708	int size;
		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	{
		726	for (;;)
		727	{
		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);
498		784
499	return 0;	785	return 0;
500	}	786	}
501		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
502	#define dREQ \	821	#define dREQ \
503	aio_req req; \	822	aio_req req = dreq (callback); \
		823
		824	#define REQ_SEND \
		825	PUTBACK; \
		826	req_submit (req); \
		827	SPAGAIN; \
504	\	828	\
505	if (SvOK (callback) && !SvROK (callback)) \	829	if (GIMME_V != G_VOID) \
506	croak ("clalback must be undef or of reference type"); \	830	XPUSHs (req_sv (req, aio_req_stash));
507	\	831
508	Newz (0, req, 1, aio_cb); \	832	ecb_inline void
509	if (!req) \	833	req_set_path (aio_req req, SV path, SV wdsv, SV pathsv, eio_wd wd, void **ptr)
510	croak ("out of memory during aio_req allocation"); \	834	{
511	\	835	if (expect_false (SvROK (path)))
512	req->callback = newSVsv (callback);	836	{
513		837	SV *rv = SvRV (path);
		838	SV *wdob;
		839
		840	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		841	{
		842	path = AvARRAY (rv)[1];
		843	wdob = AvARRAY (rv)[0];
		844
		845	if (SvOK (wdob))
		846	{
		847	*wd = SvAIO_WD (wdob);
		848	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		849	}
		850	else
		851	*wd = EIO_INVALID_WD;
		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	}
		863
		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)));
		887	break;
		888
		889	default:
		890	req->type = type_path;
		891	req_set_path1 (req, fh_or_path);
		892	break;
		893	}
		894	}
		895
		896	XS(boot_IO__AIO) ecb_cold;
		897
514	MODULE = IO::AIO PACKAGE = IO::AIO	898	MODULE = IO::AIO PACKAGE = IO::AIO
515		899
516	PROTOTYPES: ENABLE	900	PROTOTYPES: ENABLE
517		901
518	BOOT:	902	BOOT:
519	{	903	{
520	create_pipe ();	904	static const struct {
521	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	905	const char *name;
522	}	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 },
523		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
		1039	const_eio (READDIR_DENTS)
		1040	const_eio (READDIR_DIRS_FIRST)
		1041	const_eio (READDIR_STAT_ORDER)
		1042	const_eio (READDIR_FOUND_UNKNOWN)
		1043
		1044	const_eio (DT_UNKNOWN)
		1045	const_eio (DT_FIFO)
		1046	const_eio (DT_CHR)
		1047	const_eio (DT_DIR)
		1048	const_eio (DT_BLK)
		1049	const_eio (DT_REG)
		1050	const_eio (DT_LNK)
		1051	const_eio (DT_SOCK)
		1052	const_eio (DT_WHT)
		1053	};
		1054
		1055	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1056	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1057	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1058	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1059
		1060	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1061	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1062
		1063	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1064
		1065	reinit ();
		1066	}
		1067
524	void	1068	void
525	min_parallel(nthreads)	1069	reinit ()
526	int nthreads	1070	PROTOTYPE:
		1071
		1072	void
		1073	max_poll_reqs (unsigned int nreqs)
527	PROTOTYPE: $	1074	PROTOTYPE: $
		1075	CODE:
		1076	eio_set_max_poll_reqs (nreqs);
528		1077
529	void	1078	void
530	max_parallel(nthreads)	1079	max_poll_time (double nseconds)
531	int nthreads
532	PROTOTYPE: $	1080	PROTOTYPE: $
533
534	int
535	max_outstanding(nreqs)
536	int nreqs
537	PROTOTYPE: $
538	CODE:	1081	CODE:
539	RETVAL = max_outstanding;	1082	eio_set_max_poll_time (nseconds);
		1083
		1084	void
		1085	min_parallel (unsigned int nthreads)
		1086	PROTOTYPE: $
		1087	CODE:
		1088	eio_set_min_parallel (nthreads);
		1089
		1090	void
		1091	max_parallel (unsigned int nthreads)
		1092	PROTOTYPE: $
		1093	CODE:
		1094	eio_set_max_parallel (nthreads);
		1095
		1096	void
		1097	max_idle (unsigned int nthreads)
		1098	PROTOTYPE: $
		1099	CODE:
		1100	eio_set_max_idle (nthreads);
		1101
		1102	void
		1103	idle_timeout (unsigned int seconds)
		1104	PROTOTYPE: $
		1105	CODE:
		1106	eio_set_idle_timeout (seconds);
		1107
		1108	void
		1109	max_outstanding (unsigned int maxreqs)
		1110	PROTOTYPE: $
		1111	CODE:
540	max_outstanding = nreqs;	1112	max_outstanding = maxreqs;
541		1113
542	void	1114	void
543	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1115	aio_wd (SV8 pathname, SV callback=&PL_sv_undef)
544	SV * pathname
545	int flags
546	int mode
547	SV * callback
548	PROTOTYPE: $$$;$
549	CODE:	1116	PPCODE:
550	{	1117	{
551	dREQ;	1118	dREQ;
552		1119
		1120	req->type = EIO_WD_OPEN;
		1121	req_set_path1 (req, pathname);
		1122
		1123	REQ_SEND;
		1124	}
		1125
		1126	void
		1127	aio_open (SV8 pathname, int flags, int mode, SV callback=&PL_sv_undef)
		1128	PPCODE:
		1129	{
		1130	dREQ;
		1131
553	req->type = REQ_OPEN;	1132	req->type = EIO_OPEN;
554	req->data = newSVsv (pathname);	1133	req_set_path1 (req, pathname);
555	req->dataptr = SvPVbyte_nolen (req->data);
556	req->fd = flags;	1134	req->int1 = flags;
557	req->mode = mode;	1135	req->int2 = mode;
558		1136
559	send_req (req);	1137	REQ_SEND;
560	}	1138	}
561		1139
562	void	1140	void
563	aio_close(fh,callback=&PL_sv_undef)	1141	aio_fsync (SV fh, SV callback=&PL_sv_undef)
564	SV * fh
565	SV * callback
566	PROTOTYPE: $;$
567	ALIAS:	1142	ALIAS:
568	aio_close = REQ_CLOSE
569	aio_fsync = REQ_FSYNC	1143	aio_fsync = EIO_FSYNC
570	aio_fdatasync = REQ_FDATASYNC	1144	aio_fdatasync = EIO_FDATASYNC
		1145	aio_syncfs = EIO_SYNCFS
571	CODE:	1146	PPCODE:
572	{	1147	{
		1148	int fd = s_fileno_croak (fh, 0);
573	dREQ;	1149	dREQ;
574		1150
575	req->type = ix;	1151	req->type = ix;
576	req->fh = newSVsv (fh);	1152	req->sv1 = newSVsv (fh);
577	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1153	req->int1 = fd;
578		1154
579	send_req (req);	1155	REQ_SEND;
580	}	1156	}
581		1157
582	void	1158	void
		1159	aio_sync_file_range (SV fh, off_t offset, size_t nbytes, UV flags, SV callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	int fd = s_fileno_croak (fh, 0);
		1163	dREQ;
		1164
		1165	req->type = EIO_SYNC_FILE_RANGE;
		1166	req->sv1 = newSVsv (fh);
		1167	req->int1 = fd;
		1168	req->offs = offset;
		1169	req->size = nbytes;
		1170	req->int2 = flags;
		1171
		1172	REQ_SEND;
		1173	}
		1174
		1175	void
		1176	aio_allocate (SV fh, int mode, off_t offset, size_t len, SV callback=&PL_sv_undef)
		1177	PPCODE:
		1178	{
		1179	int fd = s_fileno_croak (fh, 0);
		1180	dREQ;
		1181
		1182	req->type = EIO_FALLOCATE;
		1183	req->sv1 = newSVsv (fh);
		1184	req->int1 = fd;
		1185	req->int2 = mode;
		1186	req->offs = offset;
		1187	req->size = len;
		1188
		1189	REQ_SEND;
		1190	}
		1191
		1192	void
		1193	aio_close (SV fh, SV callback=&PL_sv_undef)
		1194	PPCODE:
		1195	{
		1196	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1197	int fd = s_fileno_croak (fh, 0);
		1198	dREQ;
		1199
		1200	if (expect_false (close_fd < 0))
		1201	{
		1202	int pipefd [2];
		1203
		1204	if (
		1205	#ifdef _WIN32
		1206	_pipe (pipefd, 1, _O_BINARY) < 0
		1207	#else
		1208	pipe (pipefd) < 0
		1209	\|\| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1210	#endif
		1211	\|\| close (pipefd [1]) < 0
		1212	)
		1213	abort (); /D/
		1214
		1215	close_fd = pipefd [0];
		1216	}
		1217
		1218	req->type = EIO_DUP2;
		1219	req->int1 = close_fd;
		1220	req->sv2 = newSVsv (fh);
		1221	req->int2 = fd;
		1222
		1223	REQ_SEND;
		1224	}
		1225
		1226	void
		1227	aio_seek (SV fh, SV offset, int whence, SV *callback=&PL_sv_undef)
		1228	PPCODE:
		1229	{
		1230	int fd = s_fileno_croak (fh, 0);
		1231	dREQ;
		1232
		1233	req->type = EIO_SEEK;
		1234	req->sv1 = newSVsv (fh);
		1235	req->int1 = fd;
		1236	req->offs = SvVAL64 (offset);
		1237	req->int2 = whence;
		1238
		1239	REQ_SEND;
		1240	}
		1241
		1242	void
583	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1243	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback=&PL_sv_undef)
584	SV * fh
585	UV offset
586	IV length
587	SV * data
588	IV dataoffset
589	SV * callback
590	ALIAS:	1244	ALIAS:
591	aio_read = REQ_READ	1245	aio_read = EIO_READ
592	aio_write = REQ_WRITE	1246	aio_write = EIO_WRITE
593	PROTOTYPE: $$$$$;$
594	CODE:	1247	PPCODE:
595	{	1248	{
596	aio_req req;
597	STRLEN svlen;	1249	STRLEN svlen;
		1250	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
598	char *svptr = SvPVbyte (data, svlen);	1251	char *svptr = SvPVbyte (data, svlen);
599		1252	UV len = SvUV (length);
600	SvUPGRADE (data, SVt_PV);
601	SvPOK_on (data);
602		1253
603	if (dataoffset < 0)	1254	if (dataoffset < 0)
604	dataoffset += svlen;	1255	dataoffset += svlen;
605		1256
606	if (dataoffset < 0 \|\| dataoffset > svlen)	1257	if (dataoffset < 0 \|\| dataoffset > svlen)
607	croak ("data offset outside of string");	1258	croak ("dataoffset outside of data scalar");
608		1259
609	if (ix == REQ_WRITE)	1260	if (ix == EIO_WRITE)
610	{	1261	{
611	/* write: check length and adjust. */	1262	/* write: check length and adjust. */
612	if (length < 0 \|\| length + dataoffset > svlen)	1263	if (!SvOK (length) \|\| len + dataoffset > svlen)
613	length = svlen - dataoffset;	1264	len = svlen - dataoffset;
614	}	1265	}
615	else	1266	else
616	{	1267	{
617	/* read: grow scalar as necessary */	1268	/* read: check type and grow scalar as necessary */
		1269	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
618	svptr = SvGROW (data, length + dataoffset);	1270	svptr = sv_grow (data, len + dataoffset + 1);
		1271	else if (SvCUR (data) < len + dataoffset)
		1272	croak ("length + dataoffset outside of scalar, and cannot grow");
619	}	1273	}
620
621	if (length < 0)
622	croak ("length must not be negative");
623		1274
624	{	1275	{
625	dREQ;	1276	dREQ;
626		1277
627	req->type = ix;	1278	req->type = ix;
628	req->fh = newSVsv (fh);	1279	req->sv1 = newSVsv (fh);
629	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1280	req->int1 = fd;
630	: IoOFP (sv_2io (fh)));	1281	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
631	req->offset = offset;	1282	req->size = len;
632	req->length = length;
633	req->data = SvREFCNT_inc (data);	1283	req->sv2 = SvREFCNT_inc (data);
634	req->dataptr = (char *)svptr + dataoffset;	1284	req->ptr2 = (char *)svptr + dataoffset;
		1285	req->stroffset = dataoffset;
635		1286
636	if (!SvREADONLY (data))	1287	if (!SvREADONLY (data))
637	{	1288	{
638	SvREADONLY_on (data);	1289	SvREADONLY_on (data);
639	req->data2ptr = (void *)data;	1290	req->flags \|= FLAG_SV2_RO_OFF;
640	}	1291	}
641		1292
642	send_req (req);	1293	REQ_SEND;
643	}	1294	}
644	}	1295	}
645		1296
646	void	1297	void
647	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1298	aio_readlink (SV8 pathname, SV callback=&PL_sv_undef)
648	SV * fh	1299	ALIAS:
649	UV offset	1300	aio_readlink = EIO_READLINK
650	IV length	1301	aio_realpath = EIO_REALPATH
651	SV * callback
652	PROTOTYPE: $$$;$
653	CODE:	1302	PPCODE:
654	{	1303	{
		1304	dREQ;
		1305
		1306	req->type = ix;
		1307	req_set_path1 (req, pathname);
		1308
		1309	REQ_SEND;
		1310	}
		1311
		1312	void
		1313	aio_sendfile (SV out_fh, SV in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1314	PPCODE:
		1315	{
		1316	int ifd = s_fileno_croak (in_fh , 0);
		1317	int ofd = s_fileno_croak (out_fh, 1);
655	dREQ;	1318	dREQ;
656		1319
		1320	req->type = EIO_SENDFILE;
		1321	req->sv1 = newSVsv (out_fh);
		1322	req->int1 = ofd;
		1323	req->sv2 = newSVsv (in_fh);
		1324	req->int2 = ifd;
		1325	req->offs = in_offset;
		1326	req->size = length;
		1327
		1328	REQ_SEND;
		1329	}
		1330
		1331	void
		1332	aio_readahead (SV fh, off_t offset, size_t length, SV callback=&PL_sv_undef)
		1333	PPCODE:
		1334	{
		1335	int fd = s_fileno_croak (fh, 0);
		1336	dREQ;
		1337
657	req->type = REQ_READAHEAD;	1338	req->type = EIO_READAHEAD;
658	req->fh = newSVsv (fh);	1339	req->sv1 = newSVsv (fh);
659	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1340	req->int1 = fd;
660	req->offset = offset;	1341	req->offs = offset;
661	req->length = length;	1342	req->size = length;
662		1343
663	send_req (req);	1344	REQ_SEND;
664	}	1345	}
665		1346
666	void	1347	void
667	aio_stat(fh_or_path,callback=&PL_sv_undef)	1348	aio_stat (SV8 fh_or_path, SV callback=&PL_sv_undef)
668	SV * fh_or_path
669	SV * callback
670	ALIAS:	1349	ALIAS:
671	aio_stat = REQ_STAT	1350	aio_stat = EIO_STAT
672	aio_lstat = REQ_LSTAT	1351	aio_lstat = EIO_LSTAT
		1352	aio_statvfs = EIO_STATVFS
		1353	PPCODE:
		1354	{
		1355	dREQ;
		1356
		1357	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1358
		1359	REQ_SEND;
		1360	}
		1361
		1362	UV
		1363	major (UV dev)
		1364	ALIAS:
		1365	minor = 1
673	CODE:	1366	CODE:
		1367	RETVAL = ix ? major (dev) : minor (dev);
		1368	OUTPUT:
		1369	RETVAL
		1370
		1371	UV
		1372	makedev (UV maj, UV min)
		1373	CODE:
		1374	RETVAL = makedev (maj, min);
		1375	OUTPUT:
		1376	RETVAL
		1377
		1378	void
		1379	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback=&PL_sv_undef)
		1380	PPCODE:
674	{	1381	{
675	dREQ;	1382	dREQ;
676		1383
677	New (0, req->statdata, 1, Stat_t);	1384	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
678	if (!req->statdata)	1385	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
679	{	1386	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
680	free_req (req);
681	croak ("out of memory during aio_req->statdata allocation");
682	}
683		1387
684	if (SvPOK (fh_or_path))	1388	REQ_SEND;
685	{
686	req->type = ix;
687	req->data = newSVsv (fh_or_path);
688	req->dataptr = SvPVbyte_nolen (req->data);
689	}
690	else
691	{
692	req->type = REQ_FSTAT;
693	req->fh = newSVsv (fh_or_path);
694	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
695	}
696
697	send_req (req);
698	}	1389	}
699		1390
700	void	1391	void
		1392	aio_truncate (SV8 fh_or_path, SV offset, SV *callback=&PL_sv_undef)
		1393	PPCODE:
		1394	{
		1395	dREQ;
		1396
		1397	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1398	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1399
		1400	REQ_SEND;
		1401	}
		1402
		1403	void
		1404	aio_chmod (SV8 fh_or_path, int mode, SV callback=&PL_sv_undef)
		1405	PPCODE:
		1406	{
		1407	dREQ;
		1408
		1409	req->int2 = mode;
		1410	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1411
		1412	REQ_SEND;
		1413	}
		1414
		1415	void
		1416	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback=&PL_sv_undef)
		1417	PPCODE:
		1418	{
		1419	dREQ;
		1420
		1421	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1422	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1423	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1424
		1425	REQ_SEND;
		1426	}
		1427
		1428	void
		1429	aio_readdirx (SV8 pathname, IV flags, SV callback=&PL_sv_undef)
		1430	PPCODE:
		1431	{
		1432	dREQ;
		1433
		1434	req->type = EIO_READDIR;
		1435	req->int1 = flags \| EIO_READDIR_DENTS \| EIO_READDIR_CUSTOM1;
		1436
		1437	if (flags & EIO_READDIR_DENTS)
		1438	req->int1 \|= EIO_READDIR_CUSTOM2;
		1439
		1440	req_set_path1 (req, pathname);
		1441
		1442	REQ_SEND;
		1443	}
		1444
		1445	void
		1446	aio_mkdir (SV8 pathname, int mode, SV callback=&PL_sv_undef)
		1447	PPCODE:
		1448	{
		1449	dREQ;
		1450
		1451	req->type = EIO_MKDIR;
		1452	req->int2 = mode;
		1453	req_set_path1 (req, pathname);
		1454
		1455	REQ_SEND;
		1456	}
		1457
		1458	void
701	aio_unlink(pathname,callback=&PL_sv_undef)	1459	aio_unlink (SV8 pathname, SV callback=&PL_sv_undef)
702	SV * pathname
703	SV * callback
704	ALIAS:	1460	ALIAS:
705	aio_unlink = REQ_UNLINK	1461	aio_unlink = EIO_UNLINK
706	aio_rmdir = REQ_RMDIR	1462	aio_rmdir = EIO_RMDIR
		1463	aio_readdir = EIO_READDIR
707	CODE:	1464	PPCODE:
708	{	1465	{
709	dREQ;	1466	dREQ;
710		1467
711	req->type = ix;	1468	req->type = ix;
712	req->data = newSVsv (pathname);	1469	req_set_path1 (req, pathname);
713	req->dataptr = SvPVbyte_nolen (req->data);
714
715	send_req (req);
716	}
717		1470
		1471	REQ_SEND;
		1472	}
		1473
718	void	1474	void
719	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1475	aio_link (SV8 oldpath, SV8 newpath, SV *callback=&PL_sv_undef)
720	SV * oldpath	1476	ALIAS:
721	SV * newpath	1477	aio_link = EIO_LINK
722	SV * callback	1478	aio_symlink = EIO_SYMLINK
		1479	aio_rename = EIO_RENAME
723	CODE:	1480	PPCODE:
724	{	1481	{
		1482	eio_wd wd2 = 0;
725	dREQ;	1483	dREQ;
726		1484
727	req->type = REQ_SYMLINK;	1485	req->type = ix;
728	req->fh = newSVsv (oldpath);	1486	req_set_path1 (req, oldpath);
729	req->data2ptr = SvPVbyte_nolen (req->fh);	1487	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
730	req->data = newSVsv (newpath);	1488	req->int3 = (long)wd2;
731	req->dataptr = SvPVbyte_nolen (req->data);
732		1489
733	send_req (req);	1490	REQ_SEND;
734	}	1491	}
735		1492
736	void	1493	void
737	flush()	1494	aio_mknod (SV8 pathname, int mode, UV dev, SV callback=&PL_sv_undef)
738	PROTOTYPE:	1495	PPCODE:
		1496	{
		1497	dREQ;
		1498
		1499	req->type = EIO_MKNOD;
		1500	req->int2 = (mode_t)mode;
		1501	req->offs = dev;
		1502	req_set_path1 (req, pathname);
		1503
		1504	REQ_SEND;
		1505	}
		1506
		1507	void
		1508	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1509	ALIAS:
		1510	aio_mtouch = EIO_MTOUCH
		1511	aio_msync = EIO_MSYNC
		1512	PPCODE:
		1513	{
		1514	STRLEN svlen;
		1515	char *svptr = SvPVbyte (data, svlen);
		1516	UV len = SvUV (length);
		1517
		1518	if (offset < 0)
		1519	offset += svlen;
		1520
		1521	if (offset < 0 \|\| offset > svlen)
		1522	croak ("offset outside of scalar");
		1523
		1524	if (!SvOK (length) \|\| len + offset > svlen)
		1525	len = svlen - offset;
		1526
		1527	{
		1528	dREQ;
		1529
		1530	req->type = ix;
		1531	req->sv2 = SvREFCNT_inc (data);
		1532	req->ptr2 = (char *)svptr + offset;
		1533	req->size = len;
		1534	req->int1 = flags;
		1535
		1536	REQ_SEND;
		1537	}
		1538	}
		1539
		1540	void
		1541	aio_mlock (SV8 data, IV offset = 0, SV length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1542	PPCODE:
		1543	{
		1544	STRLEN svlen;
		1545	char *svptr = SvPVbyte (data, svlen);
		1546	UV len = SvUV (length);
		1547
		1548	if (offset < 0)
		1549	offset += svlen;
		1550
		1551	if (offset < 0 \|\| offset > svlen)
		1552	croak ("offset outside of scalar");
		1553
		1554	if (!SvOK (length) \|\| len + offset > svlen)
		1555	len = svlen - offset;
		1556
		1557	{
		1558	dREQ;
		1559
		1560	req->type = EIO_MLOCK;
		1561	req->sv2 = SvREFCNT_inc (data);
		1562	req->ptr2 = (char *)svptr + offset;
		1563	req->size = len;
		1564
		1565	REQ_SEND;
		1566	}
		1567	}
		1568
		1569	void
		1570	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1571	PPCODE:
		1572	{
		1573	dREQ;
		1574
		1575	req->type = EIO_MLOCKALL;
		1576	req->int1 = flags;
		1577
		1578	REQ_SEND;
		1579	}
		1580
		1581	void
		1582	aio_fiemap (SV fh, off_t start, SV length, U32 flags, SV count, SV callback=&PL_sv_undef)
		1583	PPCODE:
		1584	{
		1585	int fd = s_fileno_croak (fh, 0);
		1586	dREQ;
		1587
		1588	req->type = EIO_CUSTOM;
		1589	req->sv1 = newSVsv (fh);
		1590	req->int1 = fd;
		1591
		1592	req->feed = fiemap;
		1593	#if HAVE_FIEMAP
		1594	/* keep our fingers crossed that the next two types are 64 bit */
		1595	req->offs = start;
		1596	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1597	req->int2 = flags;
		1598	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1599	#endif
		1600
		1601	REQ_SEND;
		1602	}
		1603
		1604	void
		1605	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1606	PPCODE:
		1607	{
		1608	dREQ;
		1609
		1610	req->type = EIO_BUSY;
		1611	req->nv1 = delay < 0. ? 0. : delay;
		1612
		1613	REQ_SEND;
		1614	}
		1615
		1616	void
		1617	aio_group (SV *callback=&PL_sv_undef)
		1618	PPCODE:
		1619	{
		1620	dREQ;
		1621
		1622	req->type = EIO_GROUP;
		1623
		1624	PUTBACK;
		1625	req_submit (req);
		1626	SPAGAIN;
		1627
		1628	XPUSHs (req_sv (req, aio_grp_stash));
		1629	}
		1630
		1631	void
		1632	aio_nop (SV *callback=&PL_sv_undef)
		1633	ALIAS:
		1634	aio_nop = EIO_NOP
		1635	aio_sync = EIO_SYNC
		1636	PPCODE:
		1637	{
		1638	dREQ;
		1639
		1640	req->type = ix;
		1641
		1642	REQ_SEND;
		1643	}
		1644
		1645	int
		1646	aioreq_pri (int pri = 0)
739	CODE:	1647	CODE:
		1648	RETVAL = next_pri;
		1649	if (items > 0)
		1650	{
		1651	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1652	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1653	next_pri = pri;
		1654	}
		1655	OUTPUT:
		1656	RETVAL
		1657
		1658	void
		1659	aioreq_nice (int nice = 0)
		1660	CODE:
		1661	nice = next_pri - nice;
		1662	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1663	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1664	next_pri = nice;
		1665
		1666	void
		1667	flush ()
		1668	CODE:
740	while (nreqs)	1669	while (eio_nreqs ())
741	{	1670	{
742	poll_wait ();	1671	poll_wait ();
743	poll_cb ();	1672	poll_cb ();
744	}	1673	}
745		1674
746	void	1675	int
747	poll()	1676	poll ()
748	PROTOTYPE:
749	CODE:	1677	CODE:
750	if (nreqs)
751	{
752	poll_wait ();	1678	poll_wait ();
753	poll_cb ();	1679	RETVAL = poll_cb ();
754	}
755
756	int
757	poll_fileno()
758	PROTOTYPE:
759	CODE:
760	RETVAL = respipe [0];
761	OUTPUT:	1680	OUTPUT:
762	RETVAL	1681	RETVAL
763		1682
764	int	1683	int
		1684	poll_fileno ()
		1685	CODE:
		1686	RETVAL = s_epipe_fd (&respipe);
		1687	OUTPUT:
		1688	RETVAL
		1689
		1690	int
765	poll_cb(...)	1691	poll_cb (...)
766	PROTOTYPE:	1692	PROTOTYPE:
767	CODE:	1693	CODE:
768	RETVAL = poll_cb ();	1694	RETVAL = poll_cb ();
769	OUTPUT:	1695	OUTPUT:
770	RETVAL	1696	RETVAL
771		1697
772	void	1698	void
773	poll_wait()	1699	poll_wait ()
774	PROTOTYPE:
775	CODE:	1700	CODE:
776	if (nreqs)
777	poll_wait ();	1701	poll_wait ();
778		1702
779	int	1703	int
780	nreqs()	1704	nreqs ()
781	PROTOTYPE:
782	CODE:	1705	CODE:
783	RETVAL = nreqs;	1706	RETVAL = eio_nreqs ();
784	OUTPUT:	1707	OUTPUT:
785	RETVAL	1708	RETVAL
786		1709
		1710	int
		1711	nready ()
		1712	CODE:
		1713	RETVAL = eio_nready ();
		1714	OUTPUT:
		1715	RETVAL
		1716
		1717	int
		1718	npending ()
		1719	CODE:
		1720	RETVAL = eio_npending ();
		1721	OUTPUT:
		1722	RETVAL
		1723
		1724	int
		1725	nthreads ()
		1726	CODE:
		1727	RETVAL = eio_nthreads ();
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1733	CODE:
		1734	RETVAL = posix_fadvise (fh, offset, length, advice);
		1735	OUTPUT:
		1736	RETVAL
		1737
		1738	IV
		1739	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1740	CODE:
		1741	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	void
		1746	mmap (SV scalar, size_t length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
		1747	PPCODE:
		1748	sv_unmagic (scalar, MMAP_MAGIC);
		1749	{
		1750	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1751	void addr = (void )mmap (0, length, prot, flags, fd, offset);
		1752	if (addr == (void *)-1)
		1753	XSRETURN_NO;
		1754
		1755	sv_force_normal (scalar);
		1756
		1757	/* we store the length in mg_obj, as namlen is I32 :/ */
		1758	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1759	->mg_obj = (SV *)length;
		1760
		1761	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1762
		1763	if (!(prot & PROT_WRITE))
		1764	SvREADONLY_on (scalar);
		1765
		1766	if (SvLEN (scalar))
		1767	Safefree (SvPVX (scalar));
		1768
		1769	SvPVX (scalar) = (char *)addr;
		1770	SvCUR_set (scalar, length);
		1771	SvLEN_set (scalar, 0);
		1772	SvPOK_only (scalar);
		1773
		1774	XSRETURN_YES;
		1775	}
		1776
		1777	void
		1778	munmap (SV *scalar)
		1779	CODE:
		1780	sv_unmagic (scalar, MMAP_MAGIC);
		1781
		1782	int
		1783	madvise (SV scalar, off_t offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
		1784	ALIAS:
		1785	mprotect = 1
		1786	CODE:
		1787	{
		1788	STRLEN svlen;
		1789	void *addr = SvPVbyte (scalar, svlen);
		1790	size_t len = SvUV (length);
		1791
		1792	if (offset < 0)
		1793	offset += svlen;
		1794
		1795	if (offset < 0 \|\| offset > svlen)
		1796	croak ("offset outside of scalar");
		1797
		1798	if (!SvOK (length) \|\| len + offset > svlen)
		1799	len = svlen - offset;
		1800
		1801	addr = (void *)(((intptr_t)addr) + offset);
		1802	eio_page_align (&addr, &len);
		1803
		1804	switch (ix)
		1805	{
		1806	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1807	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1808	}
		1809	}
		1810	OUTPUT:
		1811	RETVAL
		1812
		1813	int
		1814	munlock (SV scalar, off_t offset = 0, SV length = &PL_sv_undef)
		1815	CODE:
		1816	{
		1817	STRLEN svlen;
		1818	void *addr = SvPVbyte (scalar, svlen);
		1819	size_t len = SvUV (length);
		1820
		1821	if (offset < 0)
		1822	offset += svlen;
		1823
		1824	if (offset < 0 \|\| offset > svlen)
		1825	croak ("offset outside of scalar");
		1826
		1827	if (!SvOK (length) \|\| len + offset > svlen)
		1828	len = svlen - offset;
		1829
		1830	addr = (void *)(((intptr_t)addr) + offset);
		1831	eio_page_align (&addr, &len);
		1832	#if _POSIX_MEMLOCK_RANGE
		1833	RETVAL = munlock (addr, len);
		1834	#else
		1835	RETVAL = EIO_ENOSYS ();
		1836	#endif
		1837	}
		1838	OUTPUT:
		1839	RETVAL
		1840
		1841	int
		1842	munlockall ()
		1843	CODE:
		1844	#if _POSIX_MEMLOCK
		1845	munlockall ();
		1846	#else
		1847	RETVAL = EIO_ENOSYS ();
		1848	#endif
		1849	OUTPUT:
		1850	RETVAL
		1851
		1852	int
		1853	splice (aio_rfd rfh, SV off_in, aio_wfd wfh, SV off_out, size_t length, unsigned int flags)
		1854	CODE:
		1855	{
		1856	#if HAVE_LINUX_SPLICE
		1857	loff_t off_in_, off_out_;
		1858	RETVAL = splice (
		1859	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1860	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1861	length, flags
		1862	);
		1863	#else
		1864	RETVAL = EIO_ENOSYS ();
		1865	#endif
		1866	}
		1867	OUTPUT:
		1868	RETVAL
		1869
		1870	int
		1871	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1872	CODE:
		1873	#if HAVE_LINUX_SPLICE
		1874	RETVAL = tee (rfh, wfh, length, flags);
		1875	#else
		1876	RETVAL = EIO_ENOSYS ();
		1877	#endif
		1878	OUTPUT:
		1879	RETVAL
		1880
		1881	int
		1882	pipesize (aio_rfd rfh, int new_size = -1)
		1883	PROTOTYPE: $;$
		1884	CODE:
		1885	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1886	if (new_size >= 0)
		1887	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1888	else
		1889	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1890	#else
		1891	errno = ENOSYS;
		1892	RETVAL = -1;
		1893	#endif
		1894	OUTPUT:
		1895	RETVAL
		1896
		1897	void _on_next_submit (SV *cb)
		1898	CODE:
		1899	SvREFCNT_dec (on_next_submit);
		1900	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1901
		1902	PROTOTYPES: DISABLE
		1903
		1904	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1905
		1906	BOOT:
		1907	{
		1908	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1909	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1910	}
		1911
		1912	void
		1913	DESTROY (SV *self)
		1914	CODE:
		1915	{
		1916	aio_wd wd = SvAIO_WD (self);
		1917	#if HAVE_AT
		1918	{
		1919	SV *callback = &PL_sv_undef;
		1920	dREQ; /* clobbers next_pri :/ */
		1921	next_pri = req->pri; /* restore next_pri */
		1922	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1923	req->type = EIO_WD_CLOSE;
		1924	req->wd = wd;
		1925	REQ_SEND;
		1926	}
		1927	#else
		1928	eio_wd_close_sync (wd);
		1929	#endif
		1930	}
		1931
		1932	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1933
		1934	void
		1935	cancel (aio_req_ornot req)
		1936	CODE:
		1937	eio_cancel (req);
		1938
		1939	void
		1940	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1941	PPCODE:
		1942	{
		1943	if (GIMME_V != G_VOID)
		1944	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1945
		1946	if (items > 1)
		1947	{
		1948	SV *cb_cv =get_cb (callback);
		1949
		1950	SvREFCNT_dec (req->callback);
		1951	req->callback = SvREFCNT_inc (cb_cv);
		1952	}
		1953	}
		1954
		1955	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1956
		1957	void
		1958	add (aio_req grp, ...)
		1959	PPCODE:
		1960	{
		1961	int i;
		1962
		1963	if (grp->int1 == 2)
		1964	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1965
		1966	for (i = 1; i < items; ++i )
		1967	{
		1968	aio_req req;
		1969
		1970	if (GIMME_V != G_VOID)
		1971	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1972
		1973	req = SvAIO_REQ (ST (i));
		1974
		1975	if (req)
		1976	eio_grp_add (grp, req);
		1977	}
		1978	}
		1979
		1980	void
		1981	cancel_subs (aio_req_ornot req)
		1982	CODE:
		1983	req_cancel_subs (req);
		1984
		1985	void
		1986	result (aio_req grp, ...)
		1987	CODE:
		1988	{
		1989	int i;
		1990	AV *av;
		1991
		1992	grp->errorno = errno;
		1993
		1994	av = newAV ();
		1995	av_extend (av, items - 1);
		1996
		1997	for (i = 1; i < items; ++i )
		1998	av_push (av, newSVsv (ST (i)));
		1999
		2000	SvREFCNT_dec (grp->sv1);
		2001	grp->sv1 = (SV *)av;
		2002	}
		2003
		2004	void
		2005	errno (aio_req grp, int errorno = errno)
		2006	CODE:
		2007	grp->errorno = errorno;
		2008
		2009	void
		2010	limit (aio_req grp, int limit)
		2011	CODE:
		2012	eio_grp_limit (grp, limit);
		2013
		2014	void
		2015	feed (aio_req grp, SV *callback=&PL_sv_undef)
		2016	CODE:
		2017	{
		2018	SvREFCNT_dec (grp->sv2);
		2019	grp->sv2 = newSVsv (callback);
		2020	grp->feed = aio_grp_feed;
		2021
		2022	if (grp->int2 <= 0)
		2023	grp->int2 = 2;
		2024
		2025	eio_grp_limit (grp, grp->int2);
		2026	}
		2027

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs. Revision 1.230 by root, Tue Jun 3 01:30:33 2014 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.28 by root, Wed Aug 17 05:06:59 2005 UTC vs.
Revision 1.230 by root, Tue Jun 3 01:30:33 2014 UTC