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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.109 by root, Sat Oct 6 14:05:19 2007 UTC vs.
Revision 1.246 by root, Fri Jun 23 21:43:51 2017 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14	#include <limits.h>	16	#include <limits.h>
15	#include <fcntl.h>	17	#include <fcntl.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		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. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
		38	/* perl namespace pollution */
		39	#undef VERSION
		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
18	#ifdef _WIN32	47	#ifdef _WIN32
19		48
20	# define SIGIO 0	49	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	50
22	#undef malloc	51	#undef malloc
23	#undef free	52	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	53	#undef open
27	# undef read	54	#undef read
28	# undef write	55	#undef write
29	# undef send	56	#undef send
30	# undef recv	57	#undef recv
31	# undef stat	58	#undef stat
		59	#undef lstat
32	# undef fstat	60	#undef fstat
33	# define lstat stat
34	# undef truncate	61	#undef truncate
35	# undef ftruncate	62	#undef ftruncate
36	# undef open	63	#undef open
		64	#undef link
37	# undef close	65	#undef close
38	# undef unlink	66	#undef unlink
		67	#undef mkdir
39	# undef rmdir	68	#undef rmdir
40	# undef rename	69	#undef rename
41	# undef lseek	70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
42		80
43	# define chown(a,b,c) (errno = ENOSYS, -1)	81	#define EIO_STRUCT_STAT struct _stati64
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	82	#define EIO_STRUCT_STATI64
45	# define fchmod(a,b) (errno = ENOSYS, -1)
46	# define symlink(a,b) (errno = ENOSYS, -1)
47	# define readlink(a,b,c) (errno = ENOSYS, -1)
48	# define mknod(a,b,c) (errno = ENOSYS, -1)
49	# define truncate(a,b) (errno = ENOSYS, -1)
50	# define ftruncate(fd,o) chsize ((fd), (o))
51	# define fsync(fd) _commit (fd)
52	# define opendir(fd) (errno = ENOSYS, 0)
53	# define readdir(fd) (errno = ENOSYS, -1)
54	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)
56		83
57	#else	84	#else
58		85
59	# include "autoconf/config.h"
60	# include <sys/time.h>	86	#include <sys/time.h>
61	# include <sys/select.h>	87	#include <sys/select.h>
62	# include <unistd.h>	88	#include <unistd.h>
63	# include <utime.h>	89	#include <utime.h>
64	# include <signal.h>	90	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		91
67	#endif	92	#define EIO_STRUCT_STAT Stat_t
68		93
69	#if HAVE_SENDFILE	94	#endif
70	# if __linux	95
71	# include <sys/sendfile.h>	96	/*****************************************************************************/
72	# elif __freebsd	97
73	# include <sys/socket.h>	98	#if __GNUC__ >= 3
74	# include <sys/uio.h>	99	# define expect(expr,value) __builtin_expect ((expr),(value))
75	# elif __hpux	100	#else
76	# include <sys/socket.h>	101	# define expect(expr,value) (expr)
77	# elif __solaris /* not yet */	102	#endif
78	# include <sys/sendfile.h>	103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	SV *sv3, *sv4; \
		119	STRLEN stroffset; \
		120	SV *self;
		121
		122	#define EIO_NO_WRAPPERS 1
		123
		124	#include "libeio/config.h"
		125	#include "libeio/eio.h"
		126
		127	static int req_invoke (eio_req *req);
		128	#define EIO_FINISH(req) req_invoke (req)
		129	static void req_destroy (eio_req *grp);
		130	#define EIO_DESTROY(req) req_destroy (req)
		131
		132	#include "libeio/eio.c"
		133
		134	#if !HAVE_POSIX_FADVISE
		135	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		136	#endif
		137
		138	#if !HAVE_POSIX_MADVISE
		139	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		140	#endif
		141
		142	#ifndef MAP_ANONYMOUS
		143	# ifdef MAP_ANON
		144	# define MAP_ANONYMOUS MAP_ANON
79	# else	145	# else
80	# error sendfile support requested but not available	146	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81	# endif	147	# endif
82	#endif	148	#endif
83		149
84	/* number of seconds after which idle threads exit */	150	/* defines all sorts of constants to 0 unless they are already defined */
85	#define IDLE_TIMEOUT 10	151	/* also provides const_iv_ and const_niv_ macros for them */
		152	#include "def0.h"
86		153
87	/* used for struct dirent, AIX doesn't provide it */	154	#ifndef makedev
88	#ifndef NAME_MAX	155	# define makedev(maj,min) (((maj) << 8) | (min))
89	# define NAME_MAX 4096
90	#endif	156	#endif
91		157	#ifndef major
92	/* buffer size for various temporary buffers */	158	# define major(dev) ((dev) >> 8)
93	#define AIO_BUFSIZE 65536
94
95	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8
97	# define SvVAL64 SvIV
98	#else
99	# define SvVAL64 SvNV
100	#endif	159	#endif
		160	#ifndef minor
		161	# define minor(dev) ((dev) & 0xff)
		162	#endif
101		163
102	static HV *stash;	164	#if PAGESIZE <= 0
		165	# define PAGESIZE sysconf (_SC_PAGESIZE)
		166	#endif
103		167
104	#define dBUF \	168	/*****************************************************************************/
105	char *aio_buf; \
106	X_LOCK (wrklock); \
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
108	X_UNLOCK (wrklock); \
109	if (!aio_buf) \
110	return -1;
111		169
112	typedef SV SV8; /* byte-sv, used for argument-checking */	170	static void
113		171	fiemap (eio_req *req)
114	enum {
115	REQ_QUIT,
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};
131
132	#define AIO_REQ_KLASS "IO::AIO::REQ"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134
135	typedef struct aio_cb
136	{	172	{
137	struct aio_cb *volatile next;	173	req->result = -1;
138		174
139	SV *callback;	175	#if HAVE_FIEMAP
140	SV *sv1, *sv2;	176	/* assume some c99 */
141	void *ptr1, *ptr2;	177	struct fiemap *fiemap = 0;
142	off_t offs;	178	size_t end_offset;
143	size_t size;	179	int count = req->int3;
144	ssize_t result;
145	double nv1, nv2;
146		180
147	STRLEN stroffset;	181	req->flags |= EIO_FLAG_PTR1_FREE;
148	int type;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		182
153	unsigned char flags;	183	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
154	unsigned char pri;	184	/* increase in 3.5kb steps */
		185	if (count < 0)
		186	count = 8;
155		187
156	SV *self; /* the perl counterpart of this request, if any */	188	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	189	errno = ENOMEM;
158	} aio_cb;	190	if (!fiemap)
159
160	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};
165
166	typedef aio_cb *aio_req;
167	typedef aio_cb *aio_req_ornot;
168
169	enum {
170	PRI_MIN = -4,
171	PRI_MAX = 4,
172
173	DEFAULT_PRI = 0,
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig ()
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;	191	return;
200		192
201	if (!main_sig)	193	req->ptr1 = fiemap;
		194
		195	fiemap->fm_start = req->offs;
		196	fiemap->fm_length = req->size;
		197	fiemap->fm_flags = req->int2;
		198	fiemap->fm_extent_count = count;
		199
		200	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
202	return;	201	return;
203		202
204	sigemptyset (&ss);	203	if (req->int3 >= 0 /* not autosizing */
205	sigaddset (&ss, main_sig);	204	|| !fiemap->fm_mapped_extents /* no more extents */
206	pthread_sigmask (SIG_BLOCK, &ss, 0);	205	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
207	}	206	goto done;
208		207
209	void unblock_sig ()	208	/* else we have to loop -
210	{	209	* it would be tempting (actually I tried that first) to just query the
211	sigset_t ss;	210	* number of extents needed, but linux often feels like not returning all
		211	* extents, without telling us it left any out. this complicates
		212	* this quite a bit.
		213	*/
212		214
213	if (--block_sig_level)	215	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
214	return;
215		216
216	if (!main_sig)	217	for (;;)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{	218	{
249	closedir (wrk->dirp);	219	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
250	wrk->dirp = 0;	220	char scratch[3072];
251	}	221	struct fiemap *incmap = (struct fiemap *)scratch;
252		222
253	if (wrk->dbuf)	223	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
254	{	224	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
255	free (wrk->dbuf);	225	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
256	wrk->dbuf = 0;	226	incmap->fm_flags = fiemap->fm_flags;
257	}	227	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
258	}
259		228
260	static void worker_free (worker *wrk)	229	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready ()
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending ()
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads ()
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;	230	return;
355		231
356	--q->size;	232	if (!incmap->fm_mapped_extents)
		233	goto done;
357		234
358	for (pri = NUM_PRI; pri--; )	235	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
359	{	236	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360	aio_req req = q->qs[pri];	237	errno = ENOMEM;
361
362	if (req)	238	if (!fiemap)
		239	return;
		240
		241	req->ptr1 = fiemap;
		242
		243	for (count = 0; count < incmap->fm_mapped_extents; ++count)
363	{	244	{
364	if (!(q->qs[pri] = req->next))	245	struct fiemap_extent *e = incmap->fm_extents + count;
365	q->qe[pri] = 0;
366		246
367	return req;	247	if (e->fe_logical + e->fe_length >= end_offset)
		248	goto done;
		249
		250	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		251
		252	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		253	goto done;
		254
368	}	255	}
369	}	256	}
370		257
371	abort ();	258	done:
372	}	259	req->result = 0;
373		260
374	static int poll_cb ();	261	#else
375	static int req_invoke (aio_req req);	262	errno = ENOSYS;
		263	#endif
		264	}
		265
		266	/*****************************************************************************/
		267
		268	enum {
		269	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		270	};
		271
		272	typedef eio_req *aio_req;
		273	typedef eio_req *aio_req_ornot;
		274	typedef eio_wd aio_wd;
		275
		276	static SV *on_next_submit;
		277	static int next_pri = EIO_PRI_DEFAULT;
		278	static int max_outstanding;
		279
		280	static s_epipe respipe;
		281
376	static void req_destroy (aio_req req);	282	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	283	static void req_cancel (aio_req req);
378		284
		285	static void
		286	want_poll (void)
		287	{
		288	/* write a dummy byte to the pipe so fh becomes ready */
		289	s_epipe_signal (&respipe);
		290	}
		291
		292	static void
		293	done_poll (void)
		294	{
		295	/* read any signals sent by the worker threads */
		296	s_epipe_drain (&respipe);
		297	}
		298
379	/* must be called at most once */	299	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	300	static SV *
		301	req_sv (aio_req req, HV *stash)
381	{	302	{
382	if (!req->self)	303	if (!req->self)
383	{	304	{
384	req->self = (SV *)newHV ();	305	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	306	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	307	}
387		308
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	309	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	310	}
390		311
391	static aio_req SvAIO_REQ (SV *sv)	312	static SV *
		313	newSVaio_wd (aio_wd wd)
		314	{
		315	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		316	}
		317
		318	static aio_req
		319	SvAIO_REQ (SV *sv)
392	{	320	{
393	MAGIC *mg;	321	MAGIC *mg;
394		322
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	323	if (!SvROK (sv)
		324	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		325	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		326	&& SvSTASH (SvRV (sv)) != aio_req_stash
		327	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	328	croak ("object of class IO::AIO::REQ expected");
397		329
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	330	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		331
400	return mg ? (aio_req)mg->mg_ptr : 0;	332	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	333	}
402		334
		335	static aio_wd
		336	SvAIO_WD (SV *sv)
		337	{
		338	if (!SvROK (sv)
		339	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		340	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		341	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		342
		343	return (aio_wd)(long)SvIVX (SvRV (sv));
		344	}
		345
		346	static SV *
		347	newmortalFH (int fd, int flags)
		348	{
		349	if (fd < 0)
		350	return &PL_sv_undef;
		351
		352	GV *gv = (GV *)sv_newmortal ();
		353	char sym[64];
		354	int symlen;
		355
		356	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		357	gv_init (gv, aio_stash, sym, symlen, 0);
		358
		359	symlen = snprintf (
		360	sym,
		361	sizeof (sym),
		362	"%s&=%d",
		363	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		364	fd
		365	);
		366
		367	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		368	? (SV *)gv : &PL_sv_undef;
		369	}
		370
		371	static void
403	static void aio_grp_feed (aio_req grp)	372	aio_grp_feed (aio_req grp)
404	{	373	{
405	block_sig ();	374	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	375	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	376	dSP;
414		377
415	ENTER;	378	ENTER;
416	SAVETMPS;	379	SAVETMPS;
417	PUSHMARK (SP);	380	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	381	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	382	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	384	SPAGAIN;
422	FREETMPS;	385	FREETMPS;
423	LEAVE;	386	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	387	}
434
435	unblock_sig ();
436	}	388	}
437		389
438	static void aio_grp_dec (aio_req grp)	390	static void
		391	req_submit (eio_req *req)
439	{	392	{
440	--grp->size;	393	eio_submit (req);
441		394
442	/* call feeder, if applicable */	395	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	396	{
448	block_sig ();	397	dSP;
		398	SV *cb = sv_2mortal (on_next_submit);
449		399
450	if (!req_invoke (grp))	400	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		401
457	req_destroy (grp);	402	PUSHMARK (SP);
458	unblock_sig ();	403	PUTBACK;
		404	call_sv (cb, G_DISCARD | G_EVAL);
459	}	405	}
460	}	406	}
461		407
		408	static int
462	static int req_invoke (aio_req req)	409	req_invoke (eio_req *req)
463	{	410	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	411	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	412	SvREADONLY_off (req->sv2);
468		413
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	414	if (!EIO_CANCELLED (req) && req->callback)
470	{	415	{
		416	dSP;
		417	static SV *sv_result_cache; /* caches the result integer SV */
		418	SV *sv_result;
		419
471	ENTER;	420	ENTER;
472	SAVETMPS;	421	SAVETMPS;
473	PUSHMARK (SP);	422	PUSHMARK (SP);
474	EXTEND (SP, 1);	423	EXTEND (SP, 1);
475		424
		425	/* do not recreate the result IV from scratch each time */
		426	if (expect_true (sv_result_cache))
		427	{
		428	sv_result = sv_result_cache; sv_result_cache = 0;
		429	SvIV_set (sv_result, req->result);
		430	SvIOK_only (sv_result);
		431	}
		432	else
		433	{
		434	sv_result = newSViv (req->result);
		435	SvREADONLY_on (sv_result);
		436	}
		437
476	switch (req->type)	438	switch (req->type)
477	{	439	{
		440	case EIO_WD_OPEN:
		441	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		442	break;
		443
478	case REQ_READDIR:	444	case EIO_READDIR:
479	{	445	{
480	SV *rv = &PL_sv_undef;	446	SV *rv = &PL_sv_undef;
481		447
482	if (req->result >= 0)	448	if (req->result >= 0)
483	{	449	{
484	int i;	450	int i;
485	char *buf = req->ptr2;	451	char *names = (char *)req->ptr2;
		452	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	453	AV *av = newAV ();
487		454
488	av_extend (av, req->result - 1);	455	av_extend (av, req->result - 1);
489		456
490	for (i = 0; i < req->result; ++i)	457	for (i = 0; i < req->result; ++i)
491	{	458	{
492	SV *sv = newSVpv (buf, 0);	459	if (req->int1 & EIO_READDIR_DENTS)
		460	{
		461	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		462
		463	if (req->int1 & EIO_READDIR_CUSTOM2)
		464	{
		465	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		466	AV *avent = newAV ();
		467
		468	av_extend (avent, 2);
		469
		470	if (!sv_type [ent->type])
		471	{
		472	sv_type [ent->type] = newSViv (ent->type);
		473	SvREADONLY_on (sv_type [ent->type]);
		474	}
		475
		476	av_store (avent, 0, namesv);
		477	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		478	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		479
		480	av_store (av, i, newRV_noinc ((SV *)avent));
		481	}
		482	else
494	av_store (av, i, sv);	483	av_store (av, i, namesv);
		484
		485	++ent;
		486	}
		487	else
		488	{
		489	SV *name = newSVpv (names, 0);
		490	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	491	names += SvCUR (name) + 1;
		492	}
496	}	493	}
497		494
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	495	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	496	}
500		497
501	PUSHs (rv);	498	PUSHs (rv);
		499
		500	if (req->int1 & EIO_READDIR_CUSTOM1)
		501	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	502	}
503	break;	503	break;
504		504
505	case REQ_OPEN:	505	case EIO_OPEN:
		506	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		507	break;
		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
506	{	511	{
507	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	512	SV *rv = &PL_sv_undef;
509		513
		514	#ifndef _WIN32
510	if (req->result >= 0)	515	if (req->result >= 0)
511	{	516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
512	GV *gv = (GV *)sv_newmortal ();	518	HV *hv = newHV ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
514	char sym [64];	520	* chooses to make it a struct.
515	int symlen;
516		521	*/
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	522	unsigned long fsid = 0;
518	gv_init (gv, stash, sym, symlen, 0);	523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
519		524
520	symlen = snprintf (	525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
521	sym,
522	sizeof (sym),
523	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result
526	);
527		526
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
529	fh = (SV *)gv;	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);
530	}	538	}
		539	#endif
531		540
532	PUSHs (fh);	541	PUSHs (rv);
533	}	542	}
		543
534	break;	544	break;
535		545
536	case REQ_GROUP:	546	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	547	req->int1 = 2; /* mark group as finished */
538		548
539	if (req->sv1)	549	if (req->sv1)
540	{	550	{
541	int i;	551	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	555	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	556	PUSHs (*av_fetch (av, i, 0));
547	}	557	}
548	break;	558	break;
549		559
550	case REQ_NOP:	560	case EIO_NOP:
551	case REQ_BUSY:	561	case EIO_BUSY:
552	break;	562	break;
553		563
554	case REQ_READLINK:	564	case EIO_READLINK:
		565	case EIO_REALPATH:
555	if (req->result > 0)	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)
556	{	598	{
557	SvCUR_set (req->sv2, req->result);	599	#if HAVE_FIEMAP
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);	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
560	}	631	}
		632	else
		633	PUSHs (sv_result);
561	break;	634	break;
562		635
563	case REQ_STAT:	636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
564	case REQ_LSTAT:	637	if (req->result > 0)
565	case REQ_FSTAT:	638	SvIV_set (sv_result, 0);
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	639	/* FALLTHROUGH */
567	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;
571
572	case REQ_READ:
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));
576	break;
577		640
578	default:	641	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	642	PUSHs (sv_result);
580	break;	643	break;
581	}	644	}
582		645
583	errno = req->errorno;	646	errno = req->errorno;
584		647
585	PUTBACK;	648	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	649	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	650	SPAGAIN;
588		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
589	FREETMPS;	657	FREETMPS;
590	LEAVE;	658	LEAVE;
591		659
592	PUTBACK;	660	PUTBACK;
593	}	661	}
594		662
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	663	return !!SvTRUE (ERRSV);
610	}	664	}
611		665
		666	static void
612	static void req_destroy (aio_req req)	667	req_destroy (aio_req req)
613	{	668	{
614	if (req->self)	669	if (req->self)
615	{	670	{
616	sv_unmagic (req->self, PERL_MAGIC_ext);	671	sv_unmagic (req->self, PERL_MAGIC_ext);
617	SvREFCNT_dec (req->self);	672	SvREFCNT_dec (req->self);
618	}	673	}
619		674
620	SvREFCNT_dec (req->sv1);	675	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
622	SvREFCNT_dec (req->callback);	679	SvREFCNT_dec (req->callback);
623		680
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	681	free (req);
628	}	682	}
629		683
		684	static void
630	static void req_cancel_subs (aio_req grp)	685	req_cancel_subs (aio_req grp)
631	{	686	{
632	aio_req sub;
633
634	if (grp->type != REQ_GROUP)	687	if (grp->type != EIO_GROUP)
635	return;	688	return;
636		689
637	SvREFCNT_dec (grp->sv2);	690	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	691	grp->sv2 = 0;
639		692
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	693	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	694	}
643		695
644	static void req_cancel (aio_req req)	696	static void ecb_cold
		697	create_respipe (void)
645	{	698	{
646	req->flags |= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
647		700	croak ("IO::AIO: unable to initialize result pipe");
648	req_cancel_subs (req);
649	}	701	}
650
651	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else
654	# define TO_SOCKET(x) (x)
655	#endif
656		702
657	static void	703	static void
658	create_respipe ()	704	poll_wait (void)
659	{	705	{
660	int old_readfd = respipe [0];
661
662	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));
664
665	#ifdef _WIN32
666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667	#else
668	if (pipe (respipe))
669	#endif
670	croak ("unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}
694
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread ()
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}
789
790	static void poll_wait ()
791	{
792	fd_set rfd;
793
794	while (nreqs)	706	while (eio_nreqs ())
795	{	707	{
796	int size;	708	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	709
		710	X_LOCK (EIO_POOL->reslock);
798	size = res_queue.size;	711	size = EIO_POOL->res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	712	X_UNLOCK (EIO_POOL->reslock);
800		713
801	if (size)	714	if (size)
802	return;	715	return;
803		716
804	maybe_start_thread ();	717	etp_maybe_start_thread (EIO_POOL);
805		718
806	FD_ZERO (&rfd);	719	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	720	}
811	}	721	}
812		722
813	static int poll_cb ()	723	static int
		724	poll_cb (void)
814	{	725	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	726	for (;;)
828	{	727	{
829	for (;;)	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	#endif
		759
		760	#define MMAP_MAGIC PERL_MAGIC_ext
		761
		762	static int ecb_cold
		763	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		764	{
		765	int old_errno = errno;
		766	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		767	errno = old_errno;
		768
		769	mg->mg_obj = 0; /* just in case */
		770
		771	SvREADONLY_off (sv);
		772
		773	if (SvPVX (sv) != mg->mg_ptr)
		774	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		775
		776	SvCUR_set (sv, 0);
		777	SvPVX (sv) = 0;
		778	SvOK_off (sv);
		779
		780	return 0;
		781	}
		782
		783	static MGVTBL mmap_vtbl = {
		784	0, 0, 0, 0, mmap_free
		785	};
		786
		787	/*****************************************************************************/
		788
		789	static SV *
		790	get_cb (SV *cb_sv)
		791	{
		792	SvGETMAGIC (cb_sv);
		793	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		794	}
		795
		796	static aio_req ecb_noinline
		797	dreq (SV *callback)
		798	{
		799	SV *cb_cv;
		800	aio_req req;
		801	int req_pri = next_pri;
		802	next_pri = EIO_PRI_DEFAULT;
		803
		804	cb_cv = get_cb (callback);
		805
		806	req = calloc (sizeof (*req), 1);
		807	if (!req)
		808	croak ("out of memory during eio_req allocation");
		809
		810	req->callback = SvREFCNT_inc (cb_cv);
		811	req->pri = req_pri;
		812
		813	return req;
		814	}
		815
		816	#define dREQ \
		817	aio_req req = dreq (callback); \
		818
		819	#define REQ_SEND \
		820	PUTBACK; \
		821	req_submit (req); \
		822	SPAGAIN; \
		823	\
		824	if (GIMME_V != G_VOID) \
		825	XPUSHs (req_sv (req, aio_req_stash));
		826
		827	ecb_inline void
		828	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		829	{
		830	if (expect_false (SvROK (path)))
		831	{
		832	SV *rv = SvRV (path);
		833	SV *wdob;
		834
		835	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
830	{	836	{
831	maybe_start_thread ();	837	path = AvARRAY (rv)[1];
		838	wdob = AvARRAY (rv)[0];
832		839
833	X_LOCK (reslock);	840	if (SvOK (wdob))
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{	841	{
838	--npending;	842	*wd = SvAIO_WD (wdob);
839		843	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}	844	}
861	else	845	else
862	{	846	*wd = EIO_INVALID_WD;
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);
868	}
869
870	count++;
871	}
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}	847	}
		848	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		849	{
		850	*wd = (aio_wd)(long)SvIVX (rv);
		851	*wdsv = SvREFCNT_inc_NN (rv);
		852	*ptr = ".";
		853	return; /* path set to "." */
		854	}
		855	else
		856	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		857	}
886		858
887	if (nreqs <= max_outstanding)	859	*pathsv = newSVsv (path);
		860	*ptr = SvPVbyte_nolen (*pathsv);
		861	}
		862
		863	static void ecb_noinline
		864	req_set_path1 (aio_req req, SV *path)
		865	{
		866	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		867	}
		868
		869	static void ecb_noinline
		870	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		871	{
		872	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		873
		874	switch (SvTYPE (rv))
		875	{
		876	case SVt_PVIO:
		877	case SVt_PVLV:
		878	case SVt_PVGV:
		879	req->type = type_fh;
		880	req->sv1 = newSVsv (fh_or_path);
		881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
888	break;	882	break;
889		883
890	poll_wait ();	884	default:
891		885	req->type = type_path;
892	++maxreqs;	886	req_set_path1 (req, fh_or_path);
		887	break;
893	}	888	}
894
895	unblock_sig ();
896	return count;
897	}	889	}
898		890
899	/*****************************************************************************/	891	XS(boot_IO__AIO) ecb_cold;
900	/* work around various missing functions */
901		892
902	#if !HAVE_PREADWRITE
903	# define pread aio_pread
904	# define pwrite aio_pwrite
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079
1080	if (res < 0
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182
1183	/*****************************************************************************/
1184
1185	X_THREAD_PROC (aio_proc)
1186	{
1187	{//D
1188	aio_req req;
1189	struct timespec ts;
1190	worker *self = (worker *)thr_arg;
1191
1192	/* try to distribute timeouts somewhat randomly */
1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195	for (;;)
1196	{
1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199	X_LOCK (reqlock);
1200
1201	for (;;)
1202	{
1203	self->req = req = reqq_shift (&req_queue);
1204
1205	if (req)
1206	break;
1207
1208	++idle;
1209
1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211	== ETIMEDOUT)
1212	{
1213	if (idle > max_idle)
1214	{
1215	--idle;
1216	X_UNLOCK (reqlock);
1217	X_LOCK (wrklock);
1218	--started;
1219	X_UNLOCK (wrklock);
1220	goto quit;
1221	}
1222
1223	/* we are allowed to idle, so do so without any timeout */
1224	X_COND_WAIT (reqwait, reqlock);
1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226	}
1227
1228	--idle;
1229	}
1230
1231	--nready;
1232
1233	X_UNLOCK (reqlock);
1234
1235	errno = 0; /* strictly unnecessary */
1236
1237	if (!(req->flags & FLAG_CANCELLED))
1238	switch (req->type)
1239	{
1240	case REQ_READ: req->result = req->offs >= 0
1241	? pread (req->int1, req->ptr1, req->size, req->offs)
1242	: read (req->int1, req->ptr1, req->size); break;
1243	case REQ_WRITE: req->result = req->offs >= 0
1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245	: write (req->int1, req->ptr1, req->size); break;
1246
1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262	case REQ_CLOSE: req->result = close (req->int1); break;
1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
1274	case REQ_READDIR: scandir_ (req, self); break;
1275
1276	case REQ_BUSY:
1277	#ifdef _WIN32
1278	Sleep (req->nv1 * 1000.);
1279	#else
1280	{
1281	struct timeval tv;
1282
1283	tv.tv_sec = req->nv1;
1284	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1285
1286	req->result = select (0, 0, 0, 0, &tv);
1287	}
1288	#endif
1289	break;
1290
1291	case REQ_UTIME:
1292	case REQ_FUTIME:
1293	{
1294	struct timeval tv[2];
1295	struct timeval *times;
1296
1297	if (req->nv1 != -1. || req->nv2 != -1.)
1298	{
1299	tv[0].tv_sec = req->nv1;
1300	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1301	tv[1].tv_sec = req->nv2;
1302	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1303
1304	times = tv;
1305	}
1306	else
1307	times = 0;
1308
1309
1310	req->result = req->type == REQ_FUTIME
1311	? futimes (req->int1, times)
1312	: utimes (req->ptr1, times);
1313	}
1314
1315	case REQ_GROUP:
1316	case REQ_NOP:
1317	break;
1318
1319	case REQ_QUIT:
1320	goto quit;
1321
1322	default:
1323	req->result = -1;
1324	break;
1325	}
1326
1327	req->errorno = errno;
1328
1329	X_LOCK (reslock);
1330
1331	++npending;
1332
1333	if (!reqq_push (&res_queue, req))
1334	{
1335	/* write a dummy byte to the pipe so fh becomes ready */
1336	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1337
1338	/* optionally signal the main thread asynchronously */
1339	if (main_sig)
1340	pthread_kill (main_tid, main_sig);
1341	}
1342
1343	self->req = 0;
1344	worker_clear (self);
1345
1346	X_UNLOCK (reslock);
1347	}
1348
1349	quit:
1350	X_LOCK (wrklock);
1351	worker_free (self);
1352	X_UNLOCK (wrklock);
1353
1354	return 0;
1355	}//D
1356	}
1357
1358	/*****************************************************************************/
1359
1360	static void atfork_prepare (void)
1361	{
1362	X_LOCK (wrklock);
1363	X_LOCK (reqlock);
1364	X_LOCK (reslock);
1365	#if !HAVE_PREADWRITE
1366	X_LOCK (preadwritelock);
1367	#endif
1368	#if !HAVE_READDIR_R
1369	X_LOCK (readdirlock);
1370	#endif
1371	}
1372
1373	static void atfork_parent (void)
1374	{
1375	#if !HAVE_READDIR_R
1376	X_UNLOCK (readdirlock);
1377	#endif
1378	#if !HAVE_PREADWRITE
1379	X_UNLOCK (preadwritelock);
1380	#endif
1381	X_UNLOCK (reslock);
1382	X_UNLOCK (reqlock);
1383	X_UNLOCK (wrklock);
1384	}
1385
1386	static void atfork_child (void)
1387	{
1388	aio_req prv;
1389
1390	while (prv = reqq_shift (&req_queue))
1391	req_destroy (prv);
1392
1393	while (prv = reqq_shift (&res_queue))
1394	req_destroy (prv);
1395
1396	while (wrk_first.next != &wrk_first)
1397	{
1398	worker *wrk = wrk_first.next;
1399
1400	if (wrk->req)
1401	req_destroy (wrk->req);
1402
1403	worker_clear (wrk);
1404	worker_free (wrk);
1405	}
1406
1407	started = 0;
1408	idle = 0;
1409	nreqs = 0;
1410	nready = 0;
1411	npending = 0;
1412
1413	create_respipe ();
1414
1415	atfork_parent ();
1416	}
1417
1418	#define dREQ \
1419	aio_req req; \
1420	int req_pri = next_pri; \
1421	next_pri = DEFAULT_PRI + PRI_BIAS; \
1422	\
1423	if (SvOK (callback) && !SvROK (callback)) \
1424	croak ("callback must be undef or of reference type"); \
1425	\
1426	Newz (0, req, 1, aio_cb); \
1427	if (!req) \
1428	croak ("out of memory during aio_req allocation"); \
1429	\
1430	req->callback = newSVsv (callback); \
1431	req->pri = req_pri
1432
1433	#define REQ_SEND \
1434	req_send (req); \
1435	\
1436	if (GIMME_V != G_VOID) \
1437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1438
1439	MODULE = IO::AIO PACKAGE = IO::AIO	893	MODULE = IO::AIO PACKAGE = IO::AIO
1440		894
1441	PROTOTYPES: ENABLE	895	PROTOTYPES: ENABLE
1442		896
1443	BOOT:	897	BOOT:
1444	{	898	{
		899	static const struct {
		900	const char *name;
		901	IV iv;
		902	} *civ, const_iv[] = {
		903	# define const_niv(name, value) { # name, (IV) value },
		904	# define const_iv(name) { # name, (IV) name },
		905	# define const_eio(name) { # name, (IV) EIO_ ## name },
		906
		907	/* you have to re-run ./gendef0 after adding/removing any constants here */
		908	/* the first block can be undef if missing */
		909	const_iv (ENOSYS)
		910	const_iv (EXDEV)
		911	const_iv (EBADR)
		912
		913	/* for lseek */
		914	const_iv (SEEK_DATA)
		915	const_iv (SEEK_HOLE)
		916
		917	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		918	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		919	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		920	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		921	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		922	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		923
		924	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		925	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		926	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		927	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		928	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		929	const_niv (MADV_FREE , POSIX_MADV_FREE)
		930
		931	/* the second block will be 0 when missing */
		932	const_iv (O_RDONLY)
		933	const_iv (O_WRONLY)
		934	const_iv (O_RDWR)
		935	const_iv (O_CREAT)
		936	const_iv (O_TRUNC)
		937	const_iv (O_EXCL)
		938	const_iv (O_APPEND)
		939
		940	const_iv (O_ASYNC)
		941	const_iv (O_DIRECT)
		942	const_iv (O_NOATIME)
		943
		944	const_iv (O_CLOEXEC)
		945	const_iv (O_NOCTTY)
		946	const_iv (O_NOFOLLOW)
		947	const_iv (O_NONBLOCK)
		948	const_iv (O_EXEC)
		949	const_iv (O_SEARCH)
		950	const_iv (O_DIRECTORY)
		951	const_iv (O_DSYNC)
		952	const_iv (O_RSYNC)
		953	const_iv (O_SYNC)
		954	const_iv (O_PATH)
		955	const_iv (O_TMPFILE)
		956	const_iv (O_TTY_INIT)
		957
		958	const_iv (S_IFIFO)
		959	const_iv (S_IFCHR)
		960	const_iv (S_IFBLK)
		961	const_iv (S_IFLNK)
		962	const_iv (S_IFREG)
		963	const_iv (S_IFDIR)
		964	const_iv (S_IFWHT)
		965	const_iv (S_IFSOCK)
		966	const_iv (S_IFMT)
		967
		968	const_iv (ST_RDONLY)
		969	const_iv (ST_NOSUID)
		970	const_iv (ST_NODEV)
		971	const_iv (ST_NOEXEC)
		972	const_iv (ST_SYNCHRONOUS)
		973	const_iv (ST_MANDLOCK)
		974	const_iv (ST_WRITE)
		975	const_iv (ST_APPEND)
		976	const_iv (ST_IMMUTABLE)
		977	const_iv (ST_NOATIME)
		978	const_iv (ST_NODIRATIME)
		979	const_iv (ST_RELATIME)
		980
		981	const_iv (PROT_NONE)
		982	const_iv (PROT_EXEC)
		983	const_iv (PROT_READ)
		984	const_iv (PROT_WRITE)
		985
		986	const_iv (MAP_PRIVATE)
		987	const_iv (MAP_SHARED)
		988	const_iv (MAP_FIXED)
		989	const_iv (MAP_ANONYMOUS)
		990
		991	/* linuxish */
		992	const_iv (MAP_LOCKED)
		993	const_iv (MAP_NORESERVE)
		994	const_iv (MAP_POPULATE)
		995	const_iv (MAP_NONBLOCK)
		996	const_iv (MAP_GROWSDOWN)
		997	const_iv (MAP_32BIT)
		998	const_iv (MAP_HUGETLB)
		999	const_iv (MAP_STACK)
		1000
		1001	const_iv (F_DUPFD_CLOEXEC)
		1002
		1003	const_iv (F_OFD_GETLK)
		1004	const_iv (F_OFD_SETLK)
		1005	const_iv (F_OFD_GETLKW)
		1006
		1007	const_iv (FIFREEZE)
		1008	const_iv (FITHAW)
		1009	const_iv (FITRIM)
		1010	const_iv (FICLONE)
		1011	const_iv (FICLONERANGE)
		1012	const_iv (FIDEDUPERANGE)
		1013
		1014	const_iv (FS_IOC_GETFLAGS)
		1015	const_iv (FS_IOC_SETFLAGS)
		1016	const_iv (FS_IOC_GETVERSION)
		1017	const_iv (FS_IOC_SETVERSION)
		1018	const_iv (FS_IOC_FIEMAP)
		1019	const_iv (FS_IOC_FSGETXATTR)
		1020	const_iv (FS_IOC_FSSETXATTR)
		1021	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1022	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1023	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1024
		1025	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1026
		1027	const_iv (FS_SECRM_FL)
		1028	const_iv (FS_UNRM_FL)
		1029	const_iv (FS_COMPR_FL)
		1030	const_iv (FS_SYNC_FL)
		1031	const_iv (FS_IMMUTABLE_FL)
		1032	const_iv (FS_APPEND_FL)
		1033	const_iv (FS_NODUMP_FL)
		1034	const_iv (FS_NOATIME_FL)
		1035	const_iv (FS_DIRTY_FL)
		1036	const_iv (FS_COMPRBLK_FL)
		1037	const_iv (FS_NOCOMP_FL)
		1038	const_iv (FS_ENCRYPT_FL)
		1039	const_iv (FS_BTREE_FL)
		1040	const_iv (FS_INDEX_FL)
		1041	const_iv (FS_JOURNAL_DATA_FL)
		1042	const_iv (FS_NOTAIL_FL)
		1043	const_iv (FS_DIRSYNC_FL)
		1044	const_iv (FS_TOPDIR_FL)
		1045	const_iv (FS_FL_USER_MODIFIABLE)
		1046
		1047	const_iv (FS_XFLAG_REALTIME)
		1048	const_iv (FS_XFLAG_PREALLOC)
		1049	const_iv (FS_XFLAG_IMMUTABLE)
		1050	const_iv (FS_XFLAG_APPEND)
		1051	const_iv (FS_XFLAG_SYNC)
		1052	const_iv (FS_XFLAG_NOATIME)
		1053	const_iv (FS_XFLAG_NODUMP)
		1054	const_iv (FS_XFLAG_RTINHERIT)
		1055	const_iv (FS_XFLAG_PROJINHERIT)
		1056	const_iv (FS_XFLAG_NOSYMLINKS)
		1057	const_iv (FS_XFLAG_EXTSIZE)
		1058	const_iv (FS_XFLAG_EXTSZINHERIT)
		1059	const_iv (FS_XFLAG_NODEFRAG)
		1060	const_iv (FS_XFLAG_FILESTREAM)
		1061	const_iv (FS_XFLAG_DAX)
		1062	const_iv (FS_XFLAG_HASATTR)
		1063
		1064	const_iv (FIEMAP_FLAG_SYNC)
		1065	const_iv (FIEMAP_FLAG_XATTR)
		1066	const_iv (FIEMAP_FLAGS_COMPAT)
		1067	const_iv (FIEMAP_EXTENT_LAST)
		1068	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1069	const_iv (FIEMAP_EXTENT_DELALLOC)
		1070	const_iv (FIEMAP_EXTENT_ENCODED)
		1071	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1072	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1073	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1074	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1075	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1076	const_iv (FIEMAP_EXTENT_MERGED)
		1077	const_iv (FIEMAP_EXTENT_SHARED)
		1078
		1079	const_iv (SPLICE_F_MOVE)
		1080	const_iv (SPLICE_F_NONBLOCK)
		1081	const_iv (SPLICE_F_MORE)
		1082	const_iv (SPLICE_F_GIFT)
		1083
		1084	/* these are libeio constants, and are independent of gendef0 */
		1085	const_eio (SEEK_SET)
		1086	const_eio (SEEK_CUR)
		1087	const_eio (SEEK_END)
		1088
		1089	const_eio (MCL_FUTURE)
		1090	const_eio (MCL_CURRENT)
		1091
		1092	const_eio (MS_ASYNC)
		1093	const_eio (MS_INVALIDATE)
		1094	const_eio (MS_SYNC)
		1095
		1096	const_eio (MT_MODIFY)
		1097
		1098	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1099	const_eio (SYNC_FILE_RANGE_WRITE)
		1100	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1101
		1102	const_eio (FALLOC_FL_KEEP_SIZE)
		1103	const_eio (FALLOC_FL_PUNCH_HOLE)
		1104	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1105	const_eio (FALLOC_FL_ZERO_RANGE)
		1106
		1107	const_eio (RENAME_NOREPLACE)
		1108	const_eio (RENAME_EXCHANGE)
		1109	const_eio (RENAME_WHITEOUT)
		1110
		1111	const_eio (READDIR_DENTS)
		1112	const_eio (READDIR_DIRS_FIRST)
		1113	const_eio (READDIR_STAT_ORDER)
		1114	const_eio (READDIR_FOUND_UNKNOWN)
		1115
		1116	const_eio (DT_UNKNOWN)
		1117	const_eio (DT_FIFO)
		1118	const_eio (DT_CHR)
		1119	const_eio (DT_DIR)
		1120	const_eio (DT_BLK)
		1121	const_eio (DT_REG)
		1122	const_eio (DT_LNK)
		1123	const_eio (DT_SOCK)
		1124	const_eio (DT_WHT)
		1125	};
		1126
1445	stash = gv_stashpv ("IO::AIO", 1);	1127	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1128	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1129	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1130	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1446		1131
1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1132	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1133	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1452	#ifdef _WIN32
1453	X_MUTEX_CHECK (wrklock);
1454	X_MUTEX_CHECK (reslock);
1455	X_MUTEX_CHECK (reqlock);
1456	X_MUTEX_CHECK (reqwait);
1457	X_MUTEX_CHECK (preadwritelock);
1458	X_MUTEX_CHECK (readdirlock);
1459		1134
1460	X_COND_CHECK (reqwait);	1135	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1461	#else
1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464	#endif
1465		1136
1466	create_respipe ();	1137	reinit ();
1467
1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1469	}	1138	}
1470		1139
1471	void	1140	void
		1141	reinit ()
		1142	PROTOTYPE:
		1143
		1144	void
1472	max_poll_reqs (int nreqs)	1145	max_poll_reqs (unsigned int nreqs)
1473	PROTOTYPE: $	1146	PROTOTYPE: $
1474	CODE:	1147	CODE:
1475	max_poll_reqs = nreqs;	1148	eio_set_max_poll_reqs (nreqs);
1476		1149
1477	void	1150	void
1478	max_poll_time (double nseconds)	1151	max_poll_time (double nseconds)
1479	PROTOTYPE: $	1152	PROTOTYPE: $
1480	CODE:	1153	CODE:
1481	max_poll_time = nseconds * AIO_TICKS;	1154	eio_set_max_poll_time (nseconds);
1482		1155
1483	void	1156	void
1484	min_parallel (int nthreads)	1157	min_parallel (unsigned int nthreads)
1485	PROTOTYPE: $
1486
1487	void
1488	max_parallel (int nthreads)
1489	PROTOTYPE: $
1490
1491	void
1492	max_idle (int nthreads)
1493	PROTOTYPE: $	1158	PROTOTYPE: $
1494	CODE:	1159	CODE:
1495	set_max_idle (nthreads);	1160	eio_set_min_parallel (nthreads);
1496		1161
1497	int	1162	void
1498	max_outstanding (int maxreqs)	1163	max_parallel (unsigned int nthreads)
1499	PROTOTYPE: $	1164	PROTOTYPE: $
1500	CODE:	1165	CODE:
1501	RETVAL = max_outstanding;	1166	eio_set_max_parallel (nthreads);
		1167
		1168	void
		1169	max_idle (unsigned int nthreads)
		1170	PROTOTYPE: $
		1171	CODE:
		1172	eio_set_max_idle (nthreads);
		1173
		1174	void
		1175	idle_timeout (unsigned int seconds)
		1176	PROTOTYPE: $
		1177	CODE:
		1178	eio_set_idle_timeout (seconds);
		1179
		1180	void
		1181	max_outstanding (unsigned int maxreqs)
		1182	PROTOTYPE: $
		1183	CODE:
1502	max_outstanding = maxreqs;	1184	max_outstanding = maxreqs;
1503	OUTPUT:
1504	RETVAL
1505		1185
1506	void	1186	void
1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1187	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1508	PROTOTYPE: $$$;$
1509	PPCODE:	1188	PPCODE:
1510	{	1189	{
1511	dREQ;	1190	dREQ;
1512		1191
		1192	req->type = EIO_WD_OPEN;
		1193	req_set_path1 (req, pathname);
		1194
		1195	REQ_SEND;
		1196	}
		1197
		1198	void
		1199	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1200	PPCODE:
		1201	{
		1202	dREQ;
		1203
1513	req->type = REQ_OPEN;	1204	req->type = EIO_OPEN;
1514	req->sv1 = newSVsv (pathname);	1205	req_set_path1 (req, pathname);
1515	req->ptr1 = SvPVbyte_nolen (req->sv1);
1516	req->int1 = flags;	1206	req->int1 = flags;
1517	req->mode = mode;	1207	req->int2 = mode;
1518		1208
1519	REQ_SEND;	1209	REQ_SEND;
1520	}	1210	}
1521		1211
1522	void	1212	void
1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1213	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1524	PROTOTYPE: $;$
1525	ALIAS:	1214	ALIAS:
1526	aio_fsync = REQ_FSYNC	1215	aio_fsync = EIO_FSYNC
1527	aio_fdatasync = REQ_FDATASYNC	1216	aio_fdatasync = EIO_FDATASYNC
		1217	aio_syncfs = EIO_SYNCFS
1528	PPCODE:	1218	PPCODE:
1529	{	1219	{
		1220	int fd = s_fileno_croak (fh, 0);
1530	dREQ;	1221	dREQ;
1531		1222
1532	req->type = ix;	1223	req->type = ix;
1533	req->sv1 = newSVsv (fh);	1224	req->sv1 = newSVsv (fh);
1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1225	req->int1 = fd;
1535		1226
1536	REQ_SEND (req);	1227	REQ_SEND;
1537	}	1228	}
1538		1229
1539	int
1540	_dup (int fd)
1541	PROTOTYPE: $
1542	CODE:
1543	RETVAL = dup (fd);
1544	OUTPUT:
1545	RETVAL
1546
1547	void	1230	void
1548	_aio_close (int fd, SV *callback=&PL_sv_undef)	1231	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1549	PROTOTYPE: $;$
1550	PPCODE:	1232	PPCODE:
1551	{	1233	{
		1234	int fd = s_fileno_croak (fh, 0);
1552	dREQ;	1235	dREQ;
1553		1236
1554	req->type = REQ_CLOSE;	1237	req->type = EIO_SYNC_FILE_RANGE;
		1238	req->sv1 = newSVsv (fh);
1555	req->int1 = fd;	1239	req->int1 = fd;
		1240	req->offs = offset;
		1241	req->size = nbytes;
		1242	req->int2 = flags;
1556		1243
1557	REQ_SEND (req);	1244	REQ_SEND;
1558	}	1245	}
1559		1246
1560	void	1247	void
		1248	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1249	PPCODE:
		1250	{
		1251	int fd = s_fileno_croak (fh, 0);
		1252	dREQ;
		1253
		1254	req->type = EIO_FALLOCATE;
		1255	req->sv1 = newSVsv (fh);
		1256	req->int1 = fd;
		1257	req->int2 = mode;
		1258	req->offs = offset;
		1259	req->size = len;
		1260
		1261	REQ_SEND;
		1262	}
		1263
		1264	void
		1265	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1266	PPCODE:
		1267	{
		1268	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1269	int fd = s_fileno_croak (fh, 0);
		1270	dREQ;
		1271
		1272	if (expect_false (close_fd < 0))
		1273	{
		1274	int pipefd [2];
		1275
		1276	if (
		1277	#ifdef _WIN32
		1278	_pipe (pipefd, 1, _O_BINARY) < 0
		1279	#else
		1280	pipe (pipefd) < 0
		1281	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1282	#endif
		1283	|| close (pipefd [1]) < 0
		1284	)
		1285	abort (); /*D*/
		1286
		1287	close_fd = pipefd [0];
		1288	}
		1289
		1290	req->type = EIO_DUP2;
		1291	req->int1 = close_fd;
		1292	req->sv2 = newSVsv (fh);
		1293	req->int2 = fd;
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	void
		1299	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1300	PPCODE:
		1301	{
		1302	int fd = s_fileno_croak (fh, 0);
		1303	dREQ;
		1304
		1305	req->type = EIO_SEEK;
		1306	req->sv1 = newSVsv (fh);
		1307	req->int1 = fd;
		1308	req->offs = SvVAL64 (offset);
		1309	req->int2 = whence;
		1310
		1311	REQ_SEND;
		1312	}
		1313
		1314	void
1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1315	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1562	ALIAS:	1316	ALIAS:
1563	aio_read = REQ_READ	1317	aio_read = EIO_READ
1564	aio_write = REQ_WRITE	1318	aio_write = EIO_WRITE
1565	PROTOTYPE: $$$$$;$
1566	PPCODE:	1319	PPCODE:
1567	{	1320	{
1568	STRLEN svlen;	1321	STRLEN svlen;
		1322	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1569	char *svptr = SvPVbyte (data, svlen);	1323	char *svptr = SvPVbyte (data, svlen);
1570	UV len = SvUV (length);	1324	UV len = SvUV (length);
1571		1325
1572	SvUPGRADE (data, SVt_PV);
1573	SvPOK_on (data);
1574
1575	if (dataoffset < 0)	1326	if (dataoffset < 0)
1576	dataoffset += svlen;	1327	dataoffset += svlen;
1577		1328
1578	if (dataoffset < 0 || dataoffset > svlen)	1329	if (dataoffset < 0 || dataoffset > svlen)
1579	croak ("dataoffset outside of data scalar");	1330	croak ("dataoffset outside of data scalar");
1580		1331
1581	if (ix == REQ_WRITE)	1332	if (ix == EIO_WRITE)
1582	{	1333	{
1583	/* write: check length and adjust. */	1334	/* write: check length and adjust. */
1584	if (!SvOK (length) || len + dataoffset > svlen)	1335	if (!SvOK (length) || len + dataoffset > svlen)
1585	len = svlen - dataoffset;	1336	len = svlen - dataoffset;
1586	}	1337	}
1587	else	1338	else
1588	{	1339	{
1589	/* read: grow scalar as necessary */	1340	/* read: check type and grow scalar as necessary */
		1341	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1590	svptr = SvGROW (data, len + dataoffset + 1);	1342	svptr = sv_grow (data, len + dataoffset + 1);
		1343	else if (SvCUR (data) < len + dataoffset)
		1344	croak ("length + dataoffset outside of scalar, and cannot grow");
1591	}	1345	}
1592
1593	if (len < 0)
1594	croak ("length must not be negative");
1595		1346
1596	{	1347	{
1597	dREQ;	1348	dREQ;
1598		1349
1599	req->type = ix;	1350	req->type = ix;
1600	req->sv1 = newSVsv (fh);	1351	req->sv1 = newSVsv (fh);
1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1352	req->int1 = fd;
1602	: IoOFP (sv_2io (fh)));
1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1353	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604	req->size = len;	1354	req->size = len;
1605	req->sv2 = SvREFCNT_inc (data);	1355	req->sv2 = SvREFCNT_inc (data);
1606	req->ptr1 = (char *)svptr + dataoffset;	1356	req->ptr2 = (char *)svptr + dataoffset;
1607	req->stroffset = dataoffset;	1357	req->stroffset = dataoffset;
1608		1358
1609	if (!SvREADONLY (data))	1359	if (!SvREADONLY (data))
1610	{	1360	{
1611	SvREADONLY_on (data);	1361	SvREADONLY_on (data);
…		…
1615	REQ_SEND;	1365	REQ_SEND;
1616	}	1366	}
1617	}	1367	}
1618		1368
1619	void	1369	void
1620	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1370	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1621	PROTOTYPE: $$;$	1371	ALIAS:
		1372	aio_ioctl = EIO_IOCTL
		1373	aio_fcntl = EIO_FCNTL
1622	PPCODE:	1374	PPCODE:
1623	{	1375	{
1624	SV *data;	1376	int fd = s_fileno_croak (fh, 0);
1625	dREQ;	1377	char *svptr;
1626		1378
1627	data = newSV (NAME_MAX);	1379	if (SvPOK (arg) || !SvNIOK (arg))
1628	SvPOK_on (data);
1629
1630	req->type = REQ_READLINK;
1631	req->sv1 = newSVsv (path);
1632	req->ptr2 = SvPVbyte_nolen (req->sv1);
1633	req->sv2 = data;
1634	req->ptr1 = SvPVbyte_nolen (data);
1635
1636	REQ_SEND;
1637	}
1638
1639	void
1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1641	PROTOTYPE: $$$$;$
1642	PPCODE:
1643	{
1644	dREQ;
1645
1646	req->type = REQ_SENDFILE;
1647	req->sv1 = newSVsv (out_fh);
1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1649	req->sv2 = newSVsv (in_fh);
1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1651	req->offs = SvVAL64 (in_offset);
1652	req->size = length;
1653
1654	REQ_SEND;
1655	}
1656
1657	void
1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1659	PROTOTYPE: $$$;$
1660	PPCODE:
1661	{
1662	dREQ;
1663
1664	req->type = REQ_READAHEAD;
1665	req->sv1 = newSVsv (fh);
1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1667	req->offs = SvVAL64 (offset);
1668	req->size = length;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1675	ALIAS:
1676	aio_stat = REQ_STAT
1677	aio_lstat = REQ_LSTAT
1678	PPCODE:
1679	{
1680	dREQ;
1681
1682	req->ptr2 = malloc (sizeof (Stat_t));
1683	if (!req->ptr2)
1684	{	1380	{
1685	req_destroy (req);	1381	STRLEN svlen;
1686	croak ("out of memory during aio_stat statdata allocation");	1382	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1687	}	1383	#ifdef IOCPARM_LEN
		1384	STRLEN need = IOCPARM_LEN (request);
		1385	#else
		1386	STRLEN need = 256;
		1387	#endif
1688		1388
1689	req->flags |= FLAG_PTR2_FREE;	1389	if (svlen < need)
1690	req->sv1 = newSVsv (fh_or_path);	1390	svptr = SvGROW (arg, need);
1691
1692	if (SvPOK (fh_or_path))
1693	{
1694	req->type = ix;
1695	req->ptr1 = SvPVbyte_nolen (req->sv1);
1696	}	1391	}
1697	else	1392	else
		1393	svptr = (char *)SvIV (arg);
		1394
1698	{	1395	{
		1396	dREQ;
		1397
1699	req->type = REQ_FSTAT;	1398	req->type = ix;
1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1399	req->sv1 = newSVsv (fh);
		1400	req->int1 = fd;
		1401	req->int2 = (long)request;
		1402	req->sv2 = SvREFCNT_inc (arg);
		1403	req->ptr2 = svptr;
		1404
		1405	REQ_SEND;
1701	}	1406	}
		1407	}
		1408
		1409	void
		1410	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1411	ALIAS:
		1412	aio_readlink = EIO_READLINK
		1413	aio_realpath = EIO_REALPATH
		1414	PPCODE:
		1415	{
		1416	dREQ;
		1417
		1418	req->type = ix;
		1419	req_set_path1 (req, pathname);
1702		1420
1703	REQ_SEND;	1421	REQ_SEND;
1704	}	1422	}
1705		1423
1706	void	1424	void
		1425	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1426	PPCODE:
		1427	{
		1428	int ifd = s_fileno_croak (in_fh , 0);
		1429	int ofd = s_fileno_croak (out_fh, 1);
		1430	dREQ;
		1431
		1432	req->type = EIO_SENDFILE;
		1433	req->sv1 = newSVsv (out_fh);
		1434	req->int1 = ofd;
		1435	req->sv2 = newSVsv (in_fh);
		1436	req->int2 = ifd;
		1437	req->offs = in_offset;
		1438	req->size = length;
		1439
		1440	REQ_SEND;
		1441	}
		1442
		1443	void
		1444	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1445	PPCODE:
		1446	{
		1447	int fd = s_fileno_croak (fh, 0);
		1448	dREQ;
		1449
		1450	req->type = EIO_READAHEAD;
		1451	req->sv1 = newSVsv (fh);
		1452	req->int1 = fd;
		1453	req->offs = offset;
		1454	req->size = length;
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
		1460	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1461	ALIAS:
		1462	aio_stat = EIO_STAT
		1463	aio_lstat = EIO_LSTAT
		1464	aio_statvfs = EIO_STATVFS
		1465	PPCODE:
		1466	{
		1467	dREQ;
		1468
		1469	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1470
		1471	REQ_SEND;
		1472	}
		1473
		1474	UV
		1475	major (UV dev)
		1476	ALIAS:
		1477	minor = 1
		1478	CODE:
		1479	RETVAL = ix ? minor (dev) : major (dev);
		1480	OUTPUT:
		1481	RETVAL
		1482
		1483	UV
		1484	makedev (UV maj, UV min)
		1485	CODE:
		1486	RETVAL = makedev (maj, min);
		1487	OUTPUT:
		1488	RETVAL
		1489
		1490	void
1707	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1491	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1708	PPCODE:	1492	PPCODE:
1709	{	1493	{
1710	dREQ;	1494	dREQ;
1711		1495
1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1496	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1497	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714	req->sv1 = newSVsv (fh_or_path);	1498	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1715
1716	if (SvPOK (fh_or_path))
1717	{
1718	req->type = REQ_UTIME;
1719	req->ptr1 = SvPVbyte_nolen (req->sv1);
1720	}
1721	else
1722	{
1723	req->type = REQ_FUTIME;
1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725	}
1726		1499
1727	REQ_SEND;	1500	REQ_SEND;
1728	}	1501	}
1729		1502
1730	void	1503	void
1731	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1504	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1732	PPCODE:	1505	PPCODE:
1733	{	1506	{
1734	dREQ;	1507	dREQ;
1735		1508
1736	req->sv1 = newSVsv (fh_or_path);
1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1509	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738		1510	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1739	if (SvPOK (fh_or_path))
1740	{
1741	req->type = REQ_TRUNCATE;
1742	req->ptr1 = SvPVbyte_nolen (req->sv1);
1743	}
1744	else
1745	{
1746	req->type = REQ_FTRUNCATE;
1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748	}
1749		1511
1750	REQ_SEND;	1512	REQ_SEND;
1751	}	1513	}
1752		1514
1753	void	1515	void
1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1516	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1755	PPCODE:	1517	PPCODE:
1756	{	1518	{
1757	dREQ;	1519	dREQ;
1758		1520
1759	req->mode = mode;	1521	req->int2 = mode;
1760	req->sv1 = newSVsv (fh_or_path);	1522	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1761
1762	if (SvPOK (fh_or_path))
1763	{
1764	req->type = REQ_CHMOD;
1765	req->ptr1 = SvPVbyte_nolen (req->sv1);
1766	}
1767	else
1768	{
1769	req->type = REQ_FCHMOD;
1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771	}
1772		1523
1773	REQ_SEND;	1524	REQ_SEND;
1774	}	1525	}
1775		1526
1776	void	1527	void
1777	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1528	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1778	PPCODE:	1529	PPCODE:
1779	{	1530	{
1780	dREQ;	1531	dREQ;
1781		1532
1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1533	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1534	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784	req->sv1 = newSVsv (fh_or_path);	1535	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1785
1786	if (SvPOK (fh_or_path))
1787	{
1788	req->type = REQ_CHOWN;
1789	req->ptr1 = SvPVbyte_nolen (req->sv1);
1790	}
1791	else
1792	{
1793	req->type = REQ_FCHOWN;
1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1795	}
1796		1536
1797	REQ_SEND;	1537	REQ_SEND;
1798	}	1538	}
1799		1539
1800	void	1540	void
		1541	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1542	PPCODE:
		1543	{
		1544	dREQ;
		1545
		1546	req->type = EIO_READDIR;
		1547	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1548
		1549	if (flags & EIO_READDIR_DENTS)
		1550	req->int1 |= EIO_READDIR_CUSTOM2;
		1551
		1552	req_set_path1 (req, pathname);
		1553
		1554	REQ_SEND;
		1555	}
		1556
		1557	void
		1558	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1559	PPCODE:
		1560	{
		1561	dREQ;
		1562
		1563	req->type = EIO_MKDIR;
		1564	req->int2 = mode;
		1565	req_set_path1 (req, pathname);
		1566
		1567	REQ_SEND;
		1568	}
		1569
		1570	void
1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1571	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1802	ALIAS:	1572	ALIAS:
1803	aio_unlink = REQ_UNLINK	1573	aio_unlink = EIO_UNLINK
1804	aio_rmdir = REQ_RMDIR	1574	aio_rmdir = EIO_RMDIR
1805	aio_readdir = REQ_READDIR	1575	aio_readdir = EIO_READDIR
1806	PPCODE:	1576	PPCODE:
1807	{	1577	{
1808	dREQ;	1578	dREQ;
1809		1579
1810	req->type = ix;	1580	req->type = ix;
1811	req->sv1 = newSVsv (pathname);	1581	req_set_path1 (req, pathname);
1812	req->ptr1 = SvPVbyte_nolen (req->sv1);
1813		1582
1814	REQ_SEND;	1583	REQ_SEND;
1815	}	1584	}
1816		1585
1817	void	1586	void
1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1587	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1588	ALIAS:
		1589	aio_link = EIO_LINK
		1590	aio_symlink = EIO_SYMLINK
		1591	aio_rename = EIO_RENAME
1819	PPCODE:	1592	PPCODE:
1820	{	1593	{
1821	dREQ;	1594	eio_wd wd2 = 0;
1822
1823	req->type = REQ_MKDIR;
1824	req->sv1 = newSVsv (pathname);
1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
1826	req->mode = mode;
1827
1828	REQ_SEND;
1829	}
1830
1831	void
1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833	ALIAS:
1834	aio_link = REQ_LINK
1835	aio_symlink = REQ_SYMLINK
1836	aio_rename = REQ_RENAME
1837	PPCODE:
1838	{
1839	dREQ;	1595	dREQ;
1840		1596
1841	req->type = ix;	1597	req->type = ix;
1842	req->sv2 = newSVsv (oldpath);	1598	req_set_path1 (req, oldpath);
1843	req->ptr2 = SvPVbyte_nolen (req->sv2);	1599	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1844	req->sv1 = newSVsv (newpath);	1600	req->int3 = (long)wd2;
1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1846		1601
1847	REQ_SEND;	1602	REQ_SEND;
1848	}	1603	}
1849		1604
1850	void	1605	void
1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1606	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1852	PPCODE:	1607	PPCODE:
1853	{	1608	{
		1609	eio_wd wd2 = 0;
1854	dREQ;	1610	dREQ;
1855		1611
1856	req->type = REQ_MKNOD;	1612	req->type = EIO_RENAME;
1857	req->sv1 = newSVsv (pathname);	1613	req_set_path1 (req, oldpath);
1858	req->ptr1 = SvPVbyte_nolen (req->sv1);	1614	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1859	req->mode = (mode_t)mode;	1615	req->int2 = flags;
1860	req->offs = dev;	1616	req->int3 = (long)wd2;
1861		1617
1862	REQ_SEND;	1618	REQ_SEND;
1863	}	1619	}
1864		1620
1865	void	1621	void
1866	aio_busy (double delay, SV *callback=&PL_sv_undef)	1622	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1867	PPCODE:	1623	PPCODE:
1868	{	1624	{
1869	dREQ;	1625	dREQ;
		1626
		1627	req->type = EIO_MKNOD;
		1628	req->int2 = (mode_t)mode;
		1629	req->offs = dev;
		1630	req_set_path1 (req, pathname);
		1631
		1632	REQ_SEND;
		1633	}
1870		1634
		1635	void
		1636	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1637	ALIAS:
		1638	aio_mtouch = EIO_MTOUCH
		1639	aio_msync = EIO_MSYNC
		1640	PPCODE:
		1641	{
		1642	STRLEN svlen;
		1643	char *svptr = SvPVbyte (data, svlen);
		1644	UV len = SvUV (length);
		1645
		1646	if (flags < 0)
		1647	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1648
		1649	if (offset < 0)
		1650	offset += svlen;
		1651
		1652	if (offset < 0 || offset > svlen)
		1653	croak ("offset outside of scalar");
		1654
		1655	if (!SvOK (length) || len + offset > svlen)
		1656	len = svlen - offset;
		1657
		1658	{
		1659	dREQ;
		1660
		1661	req->type = ix;
		1662	req->sv2 = SvREFCNT_inc (data);
		1663	req->ptr2 = (char *)svptr + offset;
		1664	req->size = len;
		1665	req->int1 = flags;
		1666
		1667	REQ_SEND;
		1668	}
		1669	}
		1670
		1671	void
		1672	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1673	PPCODE:
		1674	{
		1675	STRLEN svlen;
		1676	char *svptr = SvPVbyte (data, svlen);
		1677	UV len = SvUV (length);
		1678
		1679	if (offset < 0)
		1680	offset += svlen;
		1681
		1682	if (offset < 0 || offset > svlen)
		1683	croak ("offset outside of scalar");
		1684
		1685	if (!SvOK (length) || len + offset > svlen)
		1686	len = svlen - offset;
		1687
		1688	{
		1689	dREQ;
		1690
		1691	req->type = EIO_MLOCK;
		1692	req->sv2 = SvREFCNT_inc (data);
		1693	req->ptr2 = (char *)svptr + offset;
		1694	req->size = len;
		1695
		1696	REQ_SEND;
		1697	}
		1698	}
		1699
		1700	void
		1701	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1702	PPCODE:
		1703	{
		1704	dREQ;
		1705
		1706	req->type = EIO_MLOCKALL;
		1707	req->int1 = flags;
		1708
		1709	REQ_SEND;
		1710	}
		1711
		1712	void
		1713	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1714	PPCODE:
		1715	{
		1716	int fd = s_fileno_croak (fh, 0);
		1717	dREQ;
		1718
		1719	req->type = EIO_CUSTOM;
		1720	req->sv1 = newSVsv (fh);
		1721	req->int1 = fd;
		1722
		1723	req->feed = fiemap;
		1724	#if HAVE_FIEMAP
		1725	/* keep our fingers crossed that the next two types are 64 bit */
		1726	req->offs = start;
		1727	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1728	req->int2 = flags;
		1729	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1730	#endif
		1731
		1732	REQ_SEND;
		1733	}
		1734
		1735	void
		1736	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1737	PPCODE:
		1738	{
		1739	dREQ;
		1740
1871	req->type = REQ_BUSY;	1741	req->type = EIO_BUSY;
1872	req->nv1 = delay < 0. ? 0. : delay;	1742	req->nv1 = delay < 0. ? 0. : delay;
1873		1743
1874	REQ_SEND;	1744	REQ_SEND;
1875	}	1745	}
1876		1746
1877	void	1747	void
1878	aio_group (SV *callback=&PL_sv_undef)	1748	aio_group (SV *callback = &PL_sv_undef)
1879	PROTOTYPE: ;$
1880	PPCODE:	1749	PPCODE:
1881	{	1750	{
1882	dREQ;	1751	dREQ;
1883		1752
1884	req->type = REQ_GROUP;	1753	req->type = EIO_GROUP;
1885		1754
		1755	PUTBACK;
1886	req_send (req);	1756	req_submit (req);
		1757	SPAGAIN;
		1758
1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1759	XPUSHs (req_sv (req, aio_grp_stash));
1888	}	1760	}
1889		1761
1890	void	1762	void
1891	aio_nop (SV *callback=&PL_sv_undef)	1763	aio_nop (SV *callback = &PL_sv_undef)
		1764	ALIAS:
		1765	aio_nop = EIO_NOP
		1766	aio_sync = EIO_SYNC
1892	PPCODE:	1767	PPCODE:
1893	{	1768	{
1894	dREQ;	1769	dREQ;
1895		1770
1896	req->type = REQ_NOP;	1771	req->type = ix;
1897		1772
1898	REQ_SEND;	1773	REQ_SEND;
1899	}	1774	}
1900		1775
1901	int	1776	int
1902	aioreq_pri (int pri = 0)	1777	aioreq_pri (int pri = NO_INIT)
1903	PROTOTYPE: ;$
1904	CODE:	1778	CODE:
1905	RETVAL = next_pri - PRI_BIAS;	1779	RETVAL = next_pri;
1906	if (items > 0)	1780	if (items > 0)
1907	{	1781	{
1908	if (pri < PRI_MIN) pri = PRI_MIN;	1782	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1909	if (pri > PRI_MAX) pri = PRI_MAX;	1783	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1910	next_pri = pri + PRI_BIAS;	1784	next_pri = pri;
1911	}	1785	}
1912	OUTPUT:	1786	OUTPUT:
1913	RETVAL	1787	RETVAL
1914		1788
1915	void	1789	void
1916	aioreq_nice (int nice = 0)	1790	aioreq_nice (int nice = 0)
1917	CODE:	1791	CODE:
1918	nice = next_pri - nice;	1792	nice = next_pri - nice;
1919	if (nice < PRI_MIN) nice = PRI_MIN;	1793	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1920	if (nice > PRI_MAX) nice = PRI_MAX;	1794	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1921	next_pri = nice + PRI_BIAS;	1795	next_pri = nice;
1922		1796
1923	void	1797	void
1924	flush ()	1798	flush ()
1925	PROTOTYPE:
1926	CODE:	1799	CODE:
1927	while (nreqs)	1800	while (eio_nreqs ())
1928	{	1801	{
1929	poll_wait ();	1802	poll_wait ();
1930	poll_cb ();	1803	poll_cb ();
1931	}	1804	}
1932		1805
1933	int	1806	int
1934	poll()	1807	poll ()
1935	PROTOTYPE:
1936	CODE:	1808	CODE:
1937	poll_wait ();	1809	poll_wait ();
1938	RETVAL = poll_cb ();	1810	RETVAL = poll_cb ();
1939	OUTPUT:	1811	OUTPUT:
1940	RETVAL	1812	RETVAL
1941		1813
1942	int	1814	int
1943	poll_fileno()	1815	poll_fileno ()
1944	PROTOTYPE:
1945	CODE:	1816	CODE:
1946	RETVAL = respipe [0];	1817	RETVAL = s_epipe_fd (&respipe);
1947	OUTPUT:	1818	OUTPUT:
1948	RETVAL	1819	RETVAL
1949		1820
1950	int	1821	int
1951	poll_cb(...)	1822	poll_cb (...)
1952	PROTOTYPE:	1823	PROTOTYPE:
1953	CODE:	1824	CODE:
1954	RETVAL = poll_cb ();	1825	RETVAL = poll_cb ();
1955	OUTPUT:	1826	OUTPUT:
1956	RETVAL	1827	RETVAL
1957		1828
1958	void	1829	void
1959	poll_wait()	1830	poll_wait ()
1960	PROTOTYPE:
1961	CODE:	1831	CODE:
1962	poll_wait ();	1832	poll_wait ();
1963		1833
1964	void
1965	setsig (int signum = SIGIO)
1966	PROTOTYPE: ;$
1967	CODE:
1968	{
1969	if (block_sig_level)
1970	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1971
1972	X_LOCK (reslock);
1973	main_tid = pthread_self ();
1974	main_sig = signum;
1975	X_UNLOCK (reslock);
1976
1977	if (main_sig && npending)
1978	pthread_kill (main_tid, main_sig);
1979	}
1980
1981	void
1982	aio_block (SV *cb)
1983	PROTOTYPE: &
1984	PPCODE:
1985	{
1986	int count;
1987
1988	block_sig ();
1989	PUSHMARK (SP);
1990	PUTBACK;
1991	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1992	SPAGAIN;
1993	unblock_sig ();
1994
1995	if (SvTRUE (ERRSV))
1996	croak (0);
1997
1998	XSRETURN (count);
1999	}
2000
2001	int	1834	int
2002	nreqs()	1835	nreqs ()
2003	PROTOTYPE:
2004	CODE:	1836	CODE:
2005	RETVAL = nreqs;	1837	RETVAL = eio_nreqs ();
2006	OUTPUT:	1838	OUTPUT:
2007	RETVAL	1839	RETVAL
2008		1840
2009	int	1841	int
2010	nready()	1842	nready ()
2011	PROTOTYPE:
2012	CODE:	1843	CODE:
2013	RETVAL = get_nready ();	1844	RETVAL = eio_nready ();
2014	OUTPUT:	1845	OUTPUT:
2015	RETVAL	1846	RETVAL
2016		1847
2017	int	1848	int
2018	npending()	1849	npending ()
2019	PROTOTYPE:
2020	CODE:	1850	CODE:
2021	RETVAL = get_npending ();	1851	RETVAL = eio_npending ();
2022	OUTPUT:	1852	OUTPUT:
2023	RETVAL	1853	RETVAL
2024		1854
2025	int	1855	int
2026	nthreads()	1856	nthreads ()
2027	PROTOTYPE:
2028	CODE:	1857	CODE:
2029	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1858	RETVAL = eio_nthreads ();
2030	RETVAL = started;
2031	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2032	OUTPUT:	1859	OUTPUT:
2033	RETVAL	1860	RETVAL
2034		1861
		1862	int
		1863	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1864	CODE:
		1865	RETVAL = posix_fadvise (fh, offset, length, advice);
		1866	OUTPUT:
		1867	RETVAL
		1868
		1869	IV
		1870	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1871	CODE:
		1872	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1873	OUTPUT:
		1874	RETVAL
		1875
		1876	void
		1877	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1878	PPCODE:
		1879	sv_unmagic (scalar, MMAP_MAGIC);
		1880	{
		1881	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1882	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1883	if (addr == (void *)-1)
		1884	XSRETURN_NO;
		1885
		1886	sv_force_normal (scalar);
		1887
		1888	/* we store the length in mg_obj, as namlen is I32 :/ */
		1889	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1890	->mg_obj = (SV *)length;
		1891
		1892	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1893
		1894	if (!(prot & PROT_WRITE))
		1895	SvREADONLY_on (scalar);
		1896
		1897	if (SvLEN (scalar))
		1898	Safefree (SvPVX (scalar));
		1899
		1900	SvPVX (scalar) = (char *)addr;
		1901	SvCUR_set (scalar, length);
		1902	SvLEN_set (scalar, 0);
		1903	SvPOK_only (scalar);
		1904
		1905	XSRETURN_YES;
		1906	}
		1907
		1908	void
		1909	munmap (SV *scalar)
		1910	CODE:
		1911	sv_unmagic (scalar, MMAP_MAGIC);
		1912
		1913	int
		1914	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1915	ALIAS:
		1916	mprotect = 1
		1917	CODE:
		1918	{
		1919	STRLEN svlen;
		1920	void *addr = SvPVbyte (scalar, svlen);
		1921	STRLEN len = SvUV (length);
		1922
		1923	if (offset < 0)
		1924	offset += svlen;
		1925
		1926	if (offset < 0 || offset > svlen)
		1927	croak ("offset outside of scalar");
		1928
		1929	if (!SvOK (length) || len + offset > svlen)
		1930	len = svlen - offset;
		1931
		1932	addr = (void *)(((intptr_t)addr) + offset);
		1933	eio_page_align (&addr, &len);
		1934
		1935	switch (ix)
		1936	{
		1937	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1938	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1939	}
		1940	}
		1941	OUTPUT:
		1942	RETVAL
		1943
		1944	int
		1945	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1946	CODE:
		1947	{
		1948	STRLEN svlen;
		1949	void *addr = SvPVbyte (scalar, svlen);
		1950	size_t len = SvUV (length);
		1951
		1952	if (offset < 0)
		1953	offset += svlen;
		1954
		1955	if (offset < 0 || offset > svlen)
		1956	croak ("offset outside of scalar");
		1957
		1958	if (!SvOK (length) || len + offset > svlen)
		1959	len = svlen - offset;
		1960
		1961	addr = (void *)(((intptr_t)addr) + offset);
		1962	eio_page_align (&addr, &len);
		1963	#if _POSIX_MEMLOCK_RANGE
		1964	RETVAL = munlock (addr, len);
		1965	#else
		1966	RETVAL = EIO_ENOSYS ();
		1967	#endif
		1968	}
		1969	OUTPUT:
		1970	RETVAL
		1971
		1972	int
		1973	munlockall ()
		1974	CODE:
		1975	#if _POSIX_MEMLOCK
		1976	munlockall ();
		1977	#else
		1978	RETVAL = EIO_ENOSYS ();
		1979	#endif
		1980	OUTPUT:
		1981	RETVAL
		1982
		1983	int
		1984	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1985	CODE:
		1986	{
		1987	#if HAVE_LINUX_SPLICE
		1988	loff_t off_in_, off_out_;
		1989	RETVAL = splice (
		1990	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1991	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1992	length, flags
		1993	);
		1994	#else
		1995	RETVAL = EIO_ENOSYS ();
		1996	#endif
		1997	}
		1998	OUTPUT:
		1999	RETVAL
		2000
		2001	int
		2002	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2003	CODE:
		2004	#if HAVE_LINUX_SPLICE
		2005	RETVAL = tee (rfh, wfh, length, flags);
		2006	#else
		2007	RETVAL = EIO_ENOSYS ();
		2008	#endif
		2009	OUTPUT:
		2010	RETVAL
		2011
		2012	int
		2013	pipesize (aio_rfd rfh, int new_size = -1)
		2014	PROTOTYPE: $;$
		2015	CODE:
		2016	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2017	if (new_size >= 0)
		2018	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2019	else
		2020	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2021	#else
		2022	errno = ENOSYS;
		2023	RETVAL = -1;
		2024	#endif
		2025	OUTPUT:
		2026	RETVAL
		2027
		2028	void
		2029	pipe2 (int flags = 0)
		2030	PROTOTYPE: ;$
		2031	PPCODE:
		2032	{
		2033	int fd[2];
		2034	int res;
		2035
		2036	if (flags)
		2037	#if HAVE_PIPE2
		2038	res = pipe2 (fd, flags);
		2039	#else
		2040	res = (errno = ENOSYS, -1);
		2041	#endif
		2042	else
		2043	res = pipe (fd);
		2044
		2045	if (!res)
		2046	{
		2047	EXTEND (SP, 2);
		2048	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2049	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2050	}
		2051	}
		2052
		2053	void _on_next_submit (SV *cb)
		2054	CODE:
		2055	SvREFCNT_dec (on_next_submit);
		2056	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2057
2035	PROTOTYPES: DISABLE	2058	PROTOTYPES: DISABLE
		2059
		2060	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2061
		2062	BOOT:
		2063	{
		2064	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2065	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2066	}
		2067
		2068	void
		2069	DESTROY (SV *self)
		2070	CODE:
		2071	{
		2072	aio_wd wd = SvAIO_WD (self);
		2073	#if HAVE_AT
		2074	{
		2075	SV *callback = &PL_sv_undef;
		2076	dREQ; /* clobbers next_pri :/ */
		2077	next_pri = req->pri; /* restore next_pri */
		2078	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2079	req->type = EIO_WD_CLOSE;
		2080	req->wd = wd;
		2081	REQ_SEND;
		2082	}
		2083	#else
		2084	eio_wd_close_sync (wd);
		2085	#endif
		2086	}
2036		2087
2037	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2088	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2038		2089
2039	void	2090	void
2040	cancel (aio_req_ornot req)	2091	cancel (aio_req_ornot req)
2041	CODE:	2092	CODE:
2042	req_cancel (req);	2093	eio_cancel (req);
2043		2094
2044	void	2095	void
2045	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2096	cb (aio_req_ornot req, SV *callback = NO_INIT)
2046	CODE:	2097	PPCODE:
		2098	{
		2099	if (GIMME_V != G_VOID)
		2100	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2101
		2102	if (items > 1)
		2103	{
		2104	SV *cb_cv = get_cb (callback);
		2105
2047	SvREFCNT_dec (req->callback);	2106	SvREFCNT_dec (req->callback);
2048	req->callback = newSVsv (callback);	2107	req->callback = SvREFCNT_inc (cb_cv);
		2108	}
		2109	}
2049		2110
2050	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2111	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2051		2112
2052	void	2113	void
2053	add (aio_req grp, ...)	2114	add (aio_req grp, ...)
2054	PPCODE:	2115	PPCODE:
2055	{	2116	{
2056	int i;	2117	int i;
2057	aio_req req;
2058
2059	if (main_sig && !block_sig_level)
2060	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2061		2118
2062	if (grp->int1 == 2)	2119	if (grp->int1 == 2)
2063	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2120	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2064		2121
2065	for (i = 1; i < items; ++i )	2122	for (i = 1; i < items; ++i )
2066	{	2123	{
		2124	aio_req req;
		2125
2067	if (GIMME_V != G_VOID)	2126	if (GIMME_V != G_VOID)
2068	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2127	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2069		2128
2070	req = SvAIO_REQ (ST (i));	2129	req = SvAIO_REQ (ST (i));
2071		2130
2072	if (req)	2131	if (req)
2073	{	2132	eio_grp_add (grp, req);
2074	++grp->size;
2075	req->grp = grp;
2076
2077	req->grp_prev = 0;
2078	req->grp_next = grp->grp_first;
2079
2080	if (grp->grp_first)
2081	grp->grp_first->grp_prev = req;
2082
2083	grp->grp_first = req;
2084	}
2085	}	2133	}
2086	}	2134	}
2087		2135
2088	void	2136	void
2089	cancel_subs (aio_req_ornot req)	2137	cancel_subs (aio_req_ornot req)
…		…
2098	AV *av;	2146	AV *av;
2099		2147
2100	grp->errorno = errno;	2148	grp->errorno = errno;
2101		2149
2102	av = newAV ();	2150	av = newAV ();
		2151	av_extend (av, items - 1);
2103		2152
2104	for (i = 1; i < items; ++i )	2153	for (i = 1; i < items; ++i )
2105	av_push (av, newSVsv (ST (i)));	2154	av_push (av, newSVsv (ST (i)));
2106		2155
2107	SvREFCNT_dec (grp->sv1);	2156	SvREFCNT_dec (grp->sv1);
…		…
2114	grp->errorno = errorno;	2163	grp->errorno = errorno;
2115		2164
2116	void	2165	void
2117	limit (aio_req grp, int limit)	2166	limit (aio_req grp, int limit)
2118	CODE:	2167	CODE:
2119	grp->int2 = limit;	2168	eio_grp_limit (grp, limit);
2120	aio_grp_feed (grp);
2121		2169
2122	void	2170	void
2123	feed (aio_req grp, SV *callback=&PL_sv_undef)	2171	feed (aio_req grp, SV *callback = &PL_sv_undef)
2124	CODE:	2172	CODE:
2125	{	2173	{
2126	SvREFCNT_dec (grp->sv2);	2174	SvREFCNT_dec (grp->sv2);
2127	grp->sv2 = newSVsv (callback);	2175	grp->sv2 = newSVsv (callback);
		2176	grp->feed = aio_grp_feed;
2128		2177
2129	if (grp->int2 <= 0)	2178	if (grp->int2 <= 0)
2130	grp->int2 = 2;	2179	grp->int2 = 2;
2131		2180
2132	aio_grp_feed (grp);	2181	eio_grp_limit (grp, grp->int2);
2133	}	2182	}
2134		2183

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