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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.107 by root, Wed Oct 3 21:27:51 2007 UTC vs.
Revision 1.250 by root, Fri Sep 22 05:20:39 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
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
71	# include <sys/sendfile.h>	112	#include <sys/time.h>
72	# elif __freebsd
73	# include <sys/socket.h>	113	#include <sys/resource.h>
74	# include <sys/uio.h>	114	#endif
75	# elif __hpux	115
76	# include <sys/socket.h>	116	typedef SV SV8; /* byte-sv, used for argument-checking */
77	# elif __solaris /* not yet */	117	typedef int aio_rfd; /* read file desriptor */
78	# include <sys/sendfile.h>	118	typedef int aio_wfd; /* write file descriptor */
		119
		120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		121
		122	#define EIO_REQ_MEMBERS \
		123	SV *callback; \
		124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
		126	STRLEN stroffset; \
		127	SV *self;
		128
		129	#define EIO_NO_WRAPPERS 1
		130
		131	#include "libeio/eio.h"
		132
		133	static int req_invoke (eio_req *req);
		134	#define EIO_FINISH(req) req_invoke (req)
		135	static void req_destroy (eio_req *grp);
		136	#define EIO_DESTROY(req) req_destroy (req)
		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
79	# else	151	# else
80	# error sendfile support requested but not available	152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81	# endif	153	# endif
82	#endif	154	#endif
83		155
84	/* number of seconds after which idle threads exit */	156	/* defines all sorts of constants to 0 unless they are already defined */
85	#define IDLE_TIMEOUT 10	157	/* also provides const_iv_ and const_niv_ macros for them */
		158	#include "def0.h"
86		159
87	/* used for struct dirent, AIX doesn't provide it */	160	#ifndef makedev
88	#ifndef NAME_MAX	161	# define makedev(maj,min) (((maj) << 8) | (min))
89	# define NAME_MAX 4096
90	#endif	162	#endif
91		163	#ifndef major
92	/* buffer size for various temporary buffers */	164	# 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	165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
101		169
102	static HV *stash;	170	#if PAGESIZE <= 0
		171	# define PAGESIZE sysconf (_SC_PAGESIZE)
		172	#endif
103		173
104	#define dBUF \	174	/*****************************************************************************/
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		175
112	typedef SV SV8; /* byte-sv, used for argument-checking */	176	static void
113		177	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	{	178	{
137	struct aio_cb *volatile next;	179	req->result = -1;
138		180
139	SV *callback;	181	#if HAVE_FIEMAP
140	SV *sv1, *sv2;	182	/* assume some c99 */
141	void *ptr1, *ptr2;	183	struct fiemap *fiemap = 0;
142	off_t offs;	184	size_t end_offset;
143	size_t size;	185	int count = req->int3;
144	ssize_t result;
145	double nv1, nv2;
146		186
147	STRLEN stroffset;	187	req->flags |= EIO_FLAG_PTR1_FREE;
148	int type;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		188
153	unsigned char flags;	189	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
154	unsigned char pri;	190	/* increase in 3.5kb steps */
		191	if (count < 0)
		192	count = 8;
155		193
156	SV *self; /* the perl counterpart of this request, if any */	194	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	195	errno = ENOMEM;
158	} aio_cb;	196	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;	197	return;
200		198
201	if (!main_sig)	199	req->ptr1 = fiemap;
		200
		201	fiemap->fm_start = req->offs;
		202	fiemap->fm_length = req->size;
		203	fiemap->fm_flags = req->int2;
		204	fiemap->fm_extent_count = count;
		205
		206	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
202	return;	207	return;
203		208
204	sigemptyset (&ss);	209	if (req->int3 >= 0 /* not autosizing */
205	sigaddset (&ss, main_sig);	210	|| !fiemap->fm_mapped_extents /* no more extents */
206	pthread_sigmask (SIG_BLOCK, &ss, 0);	211	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
207	}	212	goto done;
208		213
209	void unblock_sig ()	214	/* else we have to loop -
210	{	215	* it would be tempting (actually I tried that first) to just query the
211	sigset_t ss;	216	* number of extents needed, but linux often feels like not returning all
		217	* extents, without telling us it left any out. this complicates
		218	* this quite a bit.
		219	*/
212		220
213	if (--block_sig_level)	221	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
214	return;
215		222
216	if (!main_sig)	223	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	{	224	{
249	closedir (wrk->dirp);	225	/* 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;	226	char scratch[3072];
251	}	227	struct fiemap *incmap = (struct fiemap *)scratch;
252		228
253	if (wrk->dbuf)	229	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
254	{	230	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
255	free (wrk->dbuf);	231	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
256	wrk->dbuf = 0;	232	incmap->fm_flags = fiemap->fm_flags;
257	}	233	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
258	}
259		234
260	static void worker_free (worker *wrk)	235	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;	236	return;
355		237
356	--q->size;	238	if (!incmap->fm_mapped_extents)
		239	goto done;
357		240
358	for (pri = NUM_PRI; pri--; )	241	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
359	{	242	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360	aio_req req = q->qs[pri];	243	errno = ENOMEM;
361
362	if (req)	244	if (!fiemap)
		245	return;
		246
		247	req->ptr1 = fiemap;
		248
		249	for (count = 0; count < incmap->fm_mapped_extents; ++count)
363	{	250	{
364	if (!(q->qs[pri] = req->next))	251	struct fiemap_extent *e = incmap->fm_extents + count;
365	q->qe[pri] = 0;
366		252
367	return req;	253	if (e->fe_logical + e->fe_length >= end_offset)
		254	goto done;
		255
		256	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		257
		258	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		259	goto done;
		260
368	}	261	}
369	}	262	}
370		263
371	abort ();	264	done:
372	}	265	req->result = 0;
373		266
374	static int poll_cb ();	267	#else
375	static int req_invoke (aio_req req);	268	errno = ENOSYS;
		269	#endif
		270	}
		271
		272	/*****************************************************************************/
		273
		274	enum {
		275	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		276	};
		277
		278	typedef eio_req *aio_req;
		279	typedef eio_req *aio_req_ornot;
		280	typedef eio_wd aio_wd;
		281
		282	static SV *on_next_submit;
		283	static int next_pri = EIO_PRI_DEFAULT;
		284	static int max_outstanding;
		285
		286	static s_epipe respipe;
		287
376	static void req_destroy (aio_req req);	288	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	289	static void req_cancel (aio_req req);
378		290
		291	static void
		292	want_poll (void)
		293	{
		294	/* write a dummy byte to the pipe so fh becomes ready */
		295	s_epipe_signal (&respipe);
		296	}
		297
		298	static void
		299	done_poll (void)
		300	{
		301	/* read any signals sent by the worker threads */
		302	s_epipe_drain (&respipe);
		303	}
		304
379	/* must be called at most once */	305	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	306	static SV *
		307	req_sv (aio_req req, HV *stash)
381	{	308	{
382	if (!req->self)	309	if (!req->self)
383	{	310	{
384	req->self = (SV *)newHV ();	311	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	312	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	313	}
387		314
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	315	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	316	}
390		317
391	static aio_req SvAIO_REQ (SV *sv)	318	static SV *
		319	newSVaio_wd (aio_wd wd)
		320	{
		321	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		322	}
		323
		324	static aio_req
		325	SvAIO_REQ (SV *sv)
392	{	326	{
393	MAGIC *mg;	327	MAGIC *mg;
394		328
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	329	if (!SvROK (sv)
		330	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		331	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		332	&& SvSTASH (SvRV (sv)) != aio_req_stash
		333	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	334	croak ("object of class IO::AIO::REQ expected");
397		335
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	336	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		337
400	return mg ? (aio_req)mg->mg_ptr : 0;	338	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	339	}
402		340
		341	static aio_wd
		342	SvAIO_WD (SV *sv)
		343	{
		344	if (!SvROK (sv)
		345	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		346	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		347	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		348
		349	return (aio_wd)(long)SvIVX (SvRV (sv));
		350	}
		351
		352	static SV *
		353	newmortalFH (int fd, int flags)
		354	{
		355	if (fd < 0)
		356	return &PL_sv_undef;
		357
		358	GV *gv = (GV *)sv_newmortal ();
		359	char sym[64];
		360	int symlen;
		361
		362	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		363	gv_init (gv, aio_stash, sym, symlen, 0);
		364
		365	symlen = snprintf (
		366	sym,
		367	sizeof (sym),
		368	"%s&=%d",
		369	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		370	fd
		371	);
		372
		373	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		374	? (SV *)gv : &PL_sv_undef;
		375	}
		376
		377	static void
403	static void aio_grp_feed (aio_req grp)	378	aio_grp_feed (aio_req grp)
404	{	379	{
405	block_sig ();	380	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	381	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	382	dSP;
414		383
415	ENTER;	384	ENTER;
416	SAVETMPS;	385	SAVETMPS;
417	PUSHMARK (SP);	386	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	387	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	388	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	389	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	390	SPAGAIN;
422	FREETMPS;	391	FREETMPS;
423	LEAVE;	392	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	}	393	}
434
435	unblock_sig ();
436	}	394	}
437		395
438	static void aio_grp_dec (aio_req grp)	396	static void
		397	req_submit (eio_req *req)
439	{	398	{
440	--grp->size;	399	eio_submit (req);
441		400
442	/* call feeder, if applicable */	401	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	402	{
448	block_sig ();	403	dSP;
		404	SV *cb = sv_2mortal (on_next_submit);
449		405
450	if (!req_invoke (grp))	406	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		407
457	req_destroy (grp);	408	PUSHMARK (SP);
458	unblock_sig ();	409	PUTBACK;
		410	call_sv (cb, G_DISCARD | G_EVAL);
459	}	411	}
460	}	412	}
461		413
		414	static int
462	static int req_invoke (aio_req req)	415	req_invoke (eio_req *req)
463	{	416	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	417	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	418	SvREADONLY_off (req->sv2);
468		419
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	420	if (!EIO_CANCELLED (req) && req->callback)
470	{	421	{
		422	dSP;
		423	static SV *sv_result_cache; /* caches the result integer SV */
		424	SV *sv_result;
		425
471	ENTER;	426	ENTER;
472	SAVETMPS;	427	SAVETMPS;
473	PUSHMARK (SP);	428	PUSHMARK (SP);
474	EXTEND (SP, 1);	429	EXTEND (SP, 1);
475		430
		431	/* do not recreate the result IV from scratch each time */
		432	if (expect_true (sv_result_cache))
		433	{
		434	sv_result = sv_result_cache; sv_result_cache = 0;
		435	SvIV_set (sv_result, req->result);
		436	SvIOK_only (sv_result);
		437	}
		438	else
		439	{
		440	sv_result = newSViv (req->result);
		441	SvREADONLY_on (sv_result);
		442	}
		443
476	switch (req->type)	444	switch (req->type)
477	{	445	{
		446	case EIO_WD_OPEN:
		447	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		448	break;
		449
478	case REQ_READDIR:	450	case EIO_READDIR:
479	{	451	{
480	SV *rv = &PL_sv_undef;	452	SV *rv = &PL_sv_undef;
481		453
482	if (req->result >= 0)	454	if (req->result >= 0)
483	{	455	{
484	int i;	456	int i;
485	char *buf = req->ptr2;	457	char *names = (char *)req->ptr2;
		458	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	459	AV *av = newAV ();
487		460
488	av_extend (av, req->result - 1);	461	av_extend (av, req->result - 1);
489		462
490	for (i = 0; i < req->result; ++i)	463	for (i = 0; i < req->result; ++i)
491	{	464	{
492	SV *sv = newSVpv (buf, 0);	465	if (req->int1 & EIO_READDIR_DENTS)
		466	{
		467	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		468
		469	if (req->int1 & EIO_READDIR_CUSTOM2)
		470	{
		471	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		472	AV *avent = newAV ();
		473
		474	av_extend (avent, 2);
		475
		476	if (!sv_type [ent->type])
		477	{
		478	sv_type [ent->type] = newSViv (ent->type);
		479	SvREADONLY_on (sv_type [ent->type]);
		480	}
		481
		482	av_store (avent, 0, namesv);
		483	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		484	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		485
		486	av_store (av, i, newRV_noinc ((SV *)avent));
		487	}
		488	else
494	av_store (av, i, sv);	489	av_store (av, i, namesv);
		490
		491	++ent;
		492	}
		493	else
		494	{
		495	SV *name = newSVpv (names, 0);
		496	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	497	names += SvCUR (name) + 1;
		498	}
496	}	499	}
497		500
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	501	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	502	}
500		503
501	PUSHs (rv);	504	PUSHs (rv);
		505
		506	if (req->int1 & EIO_READDIR_CUSTOM1)
		507	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	508	}
503	break;	509	break;
504		510
505	case REQ_OPEN:	511	case EIO_OPEN:
		512	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		513	break;
		514
		515	case EIO_STATVFS:
		516	case EIO_FSTATVFS:
506	{	517	{
507	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	518	SV *rv = &PL_sv_undef;
509		519
		520	#ifndef _WIN32
510	if (req->result >= 0)	521	if (req->result >= 0)
511	{	522	{
		523	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
512	GV *gv = (GV *)sv_newmortal ();	524	HV *hv = newHV ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	525	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
514	char sym [64];	526	* chooses to make it a struct.
515	int symlen;
516		527	*/
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	528	unsigned long fsid = 0;
518	gv_init (gv, stash, sym, symlen, 0);	529	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
519		530
520	symlen = snprintf (	531	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		532
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	533	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
529	fh = gv;	534	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		535	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		536	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		537	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		538	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		539	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		540	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		541	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		542	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		543	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
530	}	544	}
		545	#endif
531		546
532	XPUSHs (fh);	547	PUSHs (rv);
533	}	548	}
		549
534	break;	550	break;
535		551
536	case REQ_GROUP:	552	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	553	req->int1 = 2; /* mark group as finished */
538		554
539	if (req->sv1)	555	if (req->sv1)
540	{	556	{
541	int i;	557	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	561	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	562	PUSHs (*av_fetch (av, i, 0));
547	}	563	}
548	break;	564	break;
549		565
550	case REQ_NOP:	566	case EIO_NOP:
551	case REQ_BUSY:	567	case EIO_BUSY:
552	break;	568	break;
553		569
554	case REQ_READLINK:	570	case EIO_READLINK:
		571	case EIO_REALPATH:
555	if (req->result > 0)	572	if (req->result > 0)
		573	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		574	break;
		575
		576	case EIO_STAT:
		577	case EIO_LSTAT:
		578	case EIO_FSTAT:
		579	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		580
		581	if (!(PL_laststatval = req->result))
		582	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		583	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		584
		585	PUSHs (sv_result);
		586	break;
		587
		588	case EIO_SEEK:
		589	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		590	break;
		591
		592	case EIO_READ:
		593	{
		594	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		595	*SvEND (req->sv2) = 0;
		596	SvPOK_only (req->sv2);
		597	SvSETMAGIC (req->sv2);
		598	PUSHs (sv_result);
		599	}
		600	break;
		601
		602	case EIO_CUSTOM:
		603	if (req->feed == fiemap)
556	{	604	{
557	SvCUR_set (req->sv2, req->result);	605	#if HAVE_FIEMAP
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);	606	if (!req->result)
		607	{
		608	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		609
		610	if (fiemap->fm_extent_count)
		611	{
		612	AV *av = newAV ();
		613	int i;
		614
		615	while (fiemap->fm_mapped_extents)
		616	{
		617	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		618	AV *ext_av = newAV ();
		619
		620	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		621	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		622	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		623	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		624
		625	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		626	}
		627
		628	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		629	}
		630	else
		631	{
		632	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		633	PUSHs (sv_result);
		634	}
		635	}
		636	#endif
560	}	637	}
		638	else
		639	PUSHs (sv_result);
561	break;	640	break;
562		641
563	case REQ_STAT:	642	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
564	case REQ_LSTAT:	643	if (req->result > 0)
565	case REQ_FSTAT:	644	SvIV_set (sv_result, 0);
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	645	/* 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		646
578	default:	647	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	648	PUSHs (sv_result);
580	break;	649	break;
581	}	650	}
582		651
583	errno = req->errorno;	652	errno = req->errorno;
584		653
585	PUTBACK;	654	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL);	655	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	656	SPAGAIN;
		657
		658	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		659	SvREFCNT_dec (sv_result);
		660	else
		661	sv_result_cache = sv_result;
588		662
589	FREETMPS;	663	FREETMPS;
590	LEAVE;	664	LEAVE;
		665
		666	PUTBACK;
591	}	667	}
592		668
593	if (req->grp)
594	{
595	aio_req grp = req->grp;
596
597	/* unlink request */
598	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
599	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
600
601	if (grp->grp_first == req)
602	grp->grp_first = req->grp_next;
603
604	aio_grp_dec (grp);
605	}
606
607	return !SvTRUE (ERRSV);	669	return !!SvTRUE (ERRSV);
608	}	670	}
609		671
		672	static void
610	static void req_destroy (aio_req req)	673	req_destroy (aio_req req)
611	{	674	{
612	if (req->self)	675	if (req->self)
613	{	676	{
614	sv_unmagic (req->self, PERL_MAGIC_ext);	677	sv_unmagic (req->self, PERL_MAGIC_ext);
615	SvREFCNT_dec (req->self);	678	SvREFCNT_dec (req->self);
616	}	679	}
617		680
618	SvREFCNT_dec (req->sv1);	681	SvREFCNT_dec (req->sv1);
619	SvREFCNT_dec (req->sv2);	682	SvREFCNT_dec (req->sv2);
		683	SvREFCNT_dec (req->sv3);
		684	SvREFCNT_dec (req->sv4);
620	SvREFCNT_dec (req->callback);	685	SvREFCNT_dec (req->callback);
621		686
622	if (req->flags & FLAG_PTR2_FREE)
623	free (req->ptr2);
624
625	Safefree (req);	687	free (req);
626	}	688	}
627		689
		690	static void
628	static void req_cancel_subs (aio_req grp)	691	req_cancel_subs (aio_req grp)
629	{	692	{
630	aio_req sub;
631
632	if (grp->type != REQ_GROUP)	693	if (grp->type != EIO_GROUP)
633	return;	694	return;
634		695
635	SvREFCNT_dec (grp->sv2);	696	SvREFCNT_dec (grp->sv2);
636	grp->sv2 = 0;	697	grp->sv2 = 0;
637		698
638	for (sub = grp->grp_first; sub; sub = sub->grp_next)	699	eio_grp_cancel (grp);
639	req_cancel (sub);
640	}	700	}
641		701
642	static void req_cancel (aio_req req)	702	static void ecb_cold
		703	create_respipe (void)
643	{	704	{
644	req->flags |= FLAG_CANCELLED;	705	if (s_epipe_renew (&respipe))
645		706	croak ("IO::AIO: unable to initialize result pipe");
646	req_cancel_subs (req);
647	}	707	}
648
649	#ifdef USE_SOCKETS_AS_HANDLES
650	# define TO_SOCKET(x) (win32_get_osfhandle (x))
651	#else
652	# define TO_SOCKET(x) (x)
653	#endif
654		708
655	static void	709	static void
656	create_respipe ()	710	poll_wait (void)
657	{	711	{
658	int old_readfd = respipe [0];
659
660	if (respipe [1] >= 0)
661	respipe_close (TO_SOCKET (respipe [1]));
662
663	#ifdef _WIN32
664	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
665	#else
666	if (pipe (respipe))
667	#endif
668	croak ("unable to initialize result pipe");
669
670	if (old_readfd >= 0)
671	{
672	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
673	croak ("unable to initialize result pipe(2)");
674
675	respipe_close (respipe [0]);
676	respipe [0] = old_readfd;
677	}
678
679	#ifdef _WIN32
680	int arg = 1;
681	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
682	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
683	#else
684	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
685	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
686	#endif
687	croak ("unable to initialize result pipe(3)");
688
689	respipe_osf [0] = TO_SOCKET (respipe [0]);
690	respipe_osf [1] = TO_SOCKET (respipe [1]);
691	}
692
693	X_THREAD_PROC (aio_proc);
694
695	static void start_thread (void)
696	{
697	worker *wrk = calloc (1, sizeof (worker));
698
699	if (!wrk)
700	croak ("unable to allocate worker thread data");
701
702	X_LOCK (wrklock);
703
704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
705	{
706	wrk->prev = &wrk_first;
707	wrk->next = wrk_first.next;
708	wrk_first.next->prev = wrk;
709	wrk_first.next = wrk;
710	++started;
711	}
712	else
713	free (wrk);
714
715	X_UNLOCK (wrklock);
716	}
717
718	static void maybe_start_thread ()
719	{
720	if (get_nthreads () >= wanted)
721	return;
722
723	/* todo: maybe use idle here, but might be less exact */
724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
725	return;
726
727	start_thread ();
728	}
729
730	static void req_send (aio_req req)
731	{
732	block_sig ();
733
734	++nreqs;
735
736	X_LOCK (reqlock);
737	++nready;
738	reqq_push (&req_queue, req);
739	X_COND_SIGNAL (reqwait);
740	X_UNLOCK (reqlock);
741
742	unblock_sig ();
743
744	maybe_start_thread ();
745	}
746
747	static void end_thread (void)
748	{
749	aio_req req;
750
751	Newz (0, req, 1, aio_cb);
752
753	req->type = REQ_QUIT;
754	req->pri = PRI_MAX + PRI_BIAS;
755
756	X_LOCK (reqlock);
757	reqq_push (&req_queue, req);
758	X_COND_SIGNAL (reqwait);
759	X_UNLOCK (reqlock);
760
761	X_LOCK (wrklock);
762	--started;
763	X_UNLOCK (wrklock);
764	}
765
766	static void set_max_idle (int nthreads)
767	{
768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
769	max_idle = nthreads <= 0 ? 1 : nthreads;
770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
771	}
772
773	static void min_parallel (int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void max_parallel (int nthreads)
780	{
781	if (wanted > nthreads)
782	wanted = nthreads;
783
784	while (started > wanted)
785	end_thread ();
786	}
787
788	static void poll_wait ()
789	{
790	fd_set rfd;
791
792	while (nreqs)	712	while (eio_nreqs ())
793	{	713	{
794	int size;	714	int size;
795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	715
		716	X_LOCK (EIO_POOL->reslock);
796	size = res_queue.size;	717	size = EIO_POOL->res_queue.size;
797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	718	X_UNLOCK (EIO_POOL->reslock);
798		719
799	if (size)	720	if (size)
800	return;	721	return;
801		722
802	maybe_start_thread ();	723	etp_maybe_start_thread (EIO_POOL);
803		724
804	FD_ZERO (&rfd);	725	s_epipe_wait (&respipe);
805	FD_SET (respipe [0], &rfd);
806
807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
808	}	726	}
809	}	727	}
810		728
811	static int poll_cb ()	729	static int
		730	poll_cb (void)
812	{	731	{
813	dSP;
814	int count = 0;
815	int maxreqs = max_poll_reqs;
816	int do_croak = 0;
817	struct timeval tv_start, tv_now;
818	aio_req req;
819
820	if (max_poll_time)
821	gettimeofday (&tv_start, 0);
822
823	block_sig ();
824
825	for (;;)	732	for (;;)
826	{	733	{
827	for (;;)	734	int res = eio_poll ();
		735
		736	if (res > 0)
		737	croak (0);
		738
		739	if (!max_outstanding || max_outstanding > eio_nreqs ())
		740	return res;
		741
		742	poll_wait ();
		743	}
		744	}
		745
		746	static void ecb_cold
		747	reinit (void)
		748	{
		749	create_respipe ();
		750
		751	if (eio_init (want_poll, done_poll) < 0)
		752	croak ("IO::AIO: unable to initialise eio library");
		753	}
		754
		755	/*****************************************************************************/
		756
		757	#if !_POSIX_MAPPED_FILES
		758	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		759	# define munmap(addr,length) EIO_ENOSYS ()
		760	#endif
		761
		762	#if !_POSIX_MEMORY_PROTECTION
		763	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		764	#endif
		765
		766	#define MMAP_MAGIC PERL_MAGIC_ext
		767
		768	static int ecb_cold
		769	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		770	{
		771	int old_errno = errno;
		772	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		773	errno = old_errno;
		774
		775	mg->mg_obj = 0; /* just in case */
		776
		777	SvREADONLY_off (sv);
		778
		779	if (SvPVX (sv) != mg->mg_ptr)
		780	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		781
		782	SvCUR_set (sv, 0);
		783	SvPVX (sv) = 0;
		784	SvOK_off (sv);
		785
		786	return 0;
		787	}
		788
		789	static MGVTBL mmap_vtbl = {
		790	0, 0, 0, 0, mmap_free
		791	};
		792
		793	/*****************************************************************************/
		794
		795	static SV *
		796	get_cb (SV *cb_sv)
		797	{
		798	SvGETMAGIC (cb_sv);
		799	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		800	}
		801
		802	static aio_req ecb_noinline
		803	dreq (SV *callback)
		804	{
		805	SV *cb_cv;
		806	aio_req req;
		807	int req_pri = next_pri;
		808	next_pri = EIO_PRI_DEFAULT;
		809
		810	cb_cv = get_cb (callback);
		811
		812	req = calloc (sizeof (*req), 1);
		813	if (!req)
		814	croak ("out of memory during eio_req allocation");
		815
		816	req->callback = SvREFCNT_inc (cb_cv);
		817	req->pri = req_pri;
		818
		819	return req;
		820	}
		821
		822	#define dREQ \
		823	aio_req req = dreq (callback); \
		824
		825	#define REQ_SEND \
		826	PUTBACK; \
		827	req_submit (req); \
		828	SPAGAIN; \
		829	\
		830	if (GIMME_V != G_VOID) \
		831	XPUSHs (req_sv (req, aio_req_stash));
		832
		833	ecb_inline void
		834	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		835	{
		836	if (expect_false (SvROK (path)))
		837	{
		838	SV *rv = SvRV (path);
		839	SV *wdob;
		840
		841	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
828	{	842	{
829	maybe_start_thread ();	843	path = AvARRAY (rv)[1];
		844	wdob = AvARRAY (rv)[0];
830		845
831	X_LOCK (reslock);	846	if (SvOK (wdob))
832	req = reqq_shift (&res_queue);
833
834	if (req)
835	{	847	{
836	--npending;	848	*wd = SvAIO_WD (wdob);
837		849	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
838	if (!res_queue.size)
839	{
840	/* read any signals sent by the worker threads */
841	char buf [4];
842	while (respipe_read (respipe [0], buf, 4) == 4)
843	;
844	}
845	}
846
847	X_UNLOCK (reslock);
848
849	if (!req)
850	break;
851
852	--nreqs;
853
854	if (req->type == REQ_GROUP && req->size)
855	{
856	req->int1 = 1; /* mark request as delayed */
857	continue;
858	}	850	}
859	else	851	else
860	{	852	*wd = EIO_INVALID_WD;
861	if (!req_invoke (req))
862	{
863	req_destroy (req);
864	unblock_sig ();
865	croak (0);
866	}
867
868	count++;
869	}
870
871	req_destroy (req);
872
873	if (maxreqs && !--maxreqs)
874	break;
875
876	if (max_poll_time)
877	{
878	gettimeofday (&tv_now, 0);
879
880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
881	break;
882	}
883	}	853	}
		854	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		855	{
		856	*wd = (aio_wd)(long)SvIVX (rv);
		857	*wdsv = SvREFCNT_inc_NN (rv);
		858	*ptr = ".";
		859	return; /* path set to "." */
		860	}
		861	else
		862	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		863	}
884		864
885	if (nreqs <= max_outstanding)	865	*pathsv = newSVsv (path);
		866	*ptr = SvPVbyte_nolen (*pathsv);
		867	}
		868
		869	static void ecb_noinline
		870	req_set_path1 (aio_req req, SV *path)
		871	{
		872	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		873	}
		874
		875	static void ecb_noinline
		876	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		877	{
		878	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		879
		880	switch (SvTYPE (rv))
		881	{
		882	case SVt_PVIO:
		883	case SVt_PVLV:
		884	case SVt_PVGV:
		885	req->type = type_fh;
		886	req->sv1 = newSVsv (fh_or_path);
		887	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
886	break;	888	break;
887		889
888	poll_wait ();	890	default:
889		891	req->type = type_path;
890	++maxreqs;	892	req_set_path1 (req, fh_or_path);
		893	break;
891	}	894	}
892
893	unblock_sig ();
894	return count;
895	}	895	}
896		896
897	/*****************************************************************************/	897	XS(boot_IO__AIO) ecb_cold;
898	/* work around various missing functions */
899		898
900	#if !HAVE_PREADWRITE
901	# define pread aio_pread
902	# define pwrite aio_pwrite
903
904	/*
905	* make our pread/pwrite safe against themselves, but not against
906	* normal read/write by using a mutex. slows down execution a lot,
907	* but that's your problem, not mine.
908	*/
909	static mutex_t preadwritelock = X_MUTEX_INIT;
910
911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
912	{
913	ssize_t res;
914	off_t ooffset;
915
916	X_LOCK (preadwritelock);
917	ooffset = lseek (fd, 0, SEEK_CUR);
918	lseek (fd, offset, SEEK_SET);
919	res = read (fd, buf, count);
920	lseek (fd, ooffset, SEEK_SET);
921	X_UNLOCK (preadwritelock);
922
923	return res;
924	}
925
926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
927	{
928	ssize_t res;
929	off_t ooffset;
930
931	X_LOCK (preadwritelock);
932	ooffset = lseek (fd, 0, SEEK_CUR);
933	lseek (fd, offset, SEEK_SET);
934	res = write (fd, buf, count);
935	lseek (fd, offset, SEEK_SET);
936	X_UNLOCK (preadwritelock);
937
938	return res;
939	}
940	#endif
941
942	#ifndef HAVE_FUTIMES
943
944	# define utimes(path,times) aio_utimes (path, times)
945	# define futimes(fd,times) aio_futimes (fd, times)
946
947	int aio_utimes (const char *filename, const struct timeval times[2])
948	{
949	if (times)
950	{
951	struct utimbuf buf;
952
953	buf.actime = times[0].tv_sec;
954	buf.modtime = times[1].tv_sec;
955
956	return utime (filename, &buf);
957	}
958	else
959	return utime (filename, 0);
960	}
961
962	int aio_futimes (int fd, const struct timeval tv[2])
963	{
964	errno = ENOSYS;
965	return -1;
966	}
967
968	#endif
969
970	#if !HAVE_FDATASYNC
971	# define fdatasync fsync
972	#endif
973
974	#if !HAVE_READAHEAD
975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
976
977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
978	{
979	size_t todo = count;
980	dBUF;
981
982	while (todo > 0)
983	{
984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
985
986	pread (fd, aio_buf, len, offset);
987	offset += len;
988	todo -= len;
989	}
990
991	errno = 0;
992	return count;
993	}
994
995	#endif
996
997	#if !HAVE_READDIR_R
998	# define readdir_r aio_readdir_r
999
1000	static mutex_t readdirlock = X_MUTEX_INIT;
1001
1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1003	{
1004	X_DIRENT *e;
1005	int errorno;
1006
1007	X_LOCK (readdirlock);
1008
1009	e = readdir (dirp);
1010	errorno = errno;
1011
1012	if (e)
1013	{
1014	*res = ent;
1015	strcpy (ent->d_name, e->d_name);
1016	}
1017	else
1018	*res = 0;
1019
1020	X_UNLOCK (readdirlock);
1021
1022	errno = errorno;
1023	return e ? 0 : -1;
1024	}
1025	#endif
1026
1027	/* sendfile always needs emulation */
1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1029	{
1030	ssize_t res;
1031
1032	if (!count)
1033	return 0;
1034
1035	#if HAVE_SENDFILE
1036	# if __linux
1037	res = sendfile (ofd, ifd, &offset, count);
1038
1039	# elif __freebsd
1040	/*
1041	* Of course, the freebsd sendfile is a dire hack with no thoughts
1042	* wasted on making it similar to other I/O functions.
1043	*/
1044	{
1045	off_t sbytes;
1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1047
1048	if (res < 0 && sbytes)
1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1050	res = sbytes;
1051	}
1052
1053	# elif __hpux
1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
1055
1056	# elif __solaris
1057	{
1058	struct sendfilevec vec;
1059	size_t sbytes;
1060
1061	vec.sfv_fd = ifd;
1062	vec.sfv_flag = 0;
1063	vec.sfv_off = offset;
1064	vec.sfv_len = count;
1065
1066	res = sendfilev (ofd, &vec, 1, &sbytes);
1067
1068	if (res < 0 && sbytes)
1069	res = sbytes;
1070	}
1071
1072	# endif
1073	#else
1074	res = -1;
1075	errno = ENOSYS;
1076	#endif
1077
1078	if (res < 0
1079	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1080	#if __solaris
1081	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1082	#endif
1083	)
1084	)
1085	{
1086	/* emulate sendfile. this is a major pain in the ass */
1087	dBUF;
1088
1089	res = 0;
1090
1091	while (count)
1092	{
1093	ssize_t cnt;
1094
1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1096
1097	if (cnt <= 0)
1098	{
1099	if (cnt && !res) res = -1;
1100	break;
1101	}
1102
1103	cnt = write (ofd, aio_buf, cnt);
1104
1105	if (cnt <= 0)
1106	{
1107	if (cnt && !res) res = -1;
1108	break;
1109	}
1110
1111	offset += cnt;
1112	res += cnt;
1113	count -= cnt;
1114	}
1115	}
1116
1117	return res;
1118	}
1119
1120	/* read a full directory */
1121	static void scandir_ (aio_req req, worker *self)
1122	{
1123	DIR *dirp;
1124	union
1125	{
1126	X_DIRENT d;
1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1128	} *u;
1129	X_DIRENT *entp;
1130	char *name, *names;
1131	int memlen = 4096;
1132	int memofs = 0;
1133	int res = 0;
1134
1135	X_LOCK (wrklock);
1136	self->dirp = dirp = opendir (req->ptr1);
1137	self->dbuf = u = malloc (sizeof (*u));
1138	req->flags |= FLAG_PTR2_FREE;
1139	req->ptr2 = names = malloc (memlen);
1140	X_UNLOCK (wrklock);
1141
1142	if (dirp && u && names)
1143	for (;;)
1144	{
1145	errno = 0;
1146	readdir_r (dirp, &u->d, &entp);
1147
1148	if (!entp)
1149	break;
1150
1151	name = entp->d_name;
1152
1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1154	{
1155	int len = strlen (name) + 1;
1156
1157	res++;
1158
1159	while (memofs + len > memlen)
1160	{
1161	memlen *= 2;
1162	X_LOCK (wrklock);
1163	req->ptr2 = names = realloc (names, memlen);
1164	X_UNLOCK (wrklock);
1165
1166	if (!names)
1167	break;
1168	}
1169
1170	memcpy (names + memofs, name, len);
1171	memofs += len;
1172	}
1173	}
1174
1175	if (errno)
1176	res = -1;
1177
1178	req->result = res;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	X_THREAD_PROC (aio_proc)
1184	{
1185	{//D
1186	aio_req req;
1187	struct timespec ts;
1188	worker *self = (worker *)thr_arg;
1189
1190	/* try to distribute timeouts somewhat randomly */
1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1192
1193	for (;;)
1194	{
1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1196
1197	X_LOCK (reqlock);
1198
1199	for (;;)
1200	{
1201	self->req = req = reqq_shift (&req_queue);
1202
1203	if (req)
1204	break;
1205
1206	++idle;
1207
1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1209	== ETIMEDOUT)
1210	{
1211	if (idle > max_idle)
1212	{
1213	--idle;
1214	X_UNLOCK (reqlock);
1215	X_LOCK (wrklock);
1216	--started;
1217	X_UNLOCK (wrklock);
1218	goto quit;
1219	}
1220
1221	/* we are allowed to idle, so do so without any timeout */
1222	X_COND_WAIT (reqwait, reqlock);
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224	}
1225
1226	--idle;
1227	}
1228
1229	--nready;
1230
1231	X_UNLOCK (reqlock);
1232
1233	errno = 0; /* strictly unnecessary */
1234
1235	if (!(req->flags & FLAG_CANCELLED))
1236	switch (req->type)
1237	{
1238	case REQ_READ: req->result = req->offs >= 0
1239	? pread (req->int1, req->ptr1, req->size, req->offs)
1240	: read (req->int1, req->ptr1, req->size); break;
1241	case REQ_WRITE: req->result = req->offs >= 0
1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1243	: write (req->int1, req->ptr1, req->size); break;
1244
1245	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1247
1248	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1249	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1251
1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1258
1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1269
1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
1272	case REQ_READDIR: scandir_ (req, self); break;
1273
1274	case REQ_BUSY:
1275	#ifdef _WIN32
1276	Sleep (req->nv1 * 1000.);
1277	#else
1278	{
1279	struct timeval tv;
1280
1281	tv.tv_sec = req->nv1;
1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1283
1284	req->result = select (0, 0, 0, 0, &tv);
1285	}
1286	#endif
1287	break;
1288
1289	case REQ_UTIME:
1290	case REQ_FUTIME:
1291	{
1292	struct timeval tv[2];
1293	struct timeval *times;
1294
1295	if (req->nv1 != -1. || req->nv2 != -1.)
1296	{
1297	tv[0].tv_sec = req->nv1;
1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1299	tv[1].tv_sec = req->nv2;
1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1301
1302	times = tv;
1303	}
1304	else
1305	times = 0;
1306
1307
1308	req->result = req->type == REQ_FUTIME
1309	? futimes (req->int1, times)
1310	: utimes (req->ptr1, times);
1311	}
1312
1313	case REQ_GROUP:
1314	case REQ_NOP:
1315	break;
1316
1317	case REQ_QUIT:
1318	goto quit;
1319
1320	default:
1321	req->result = -1;
1322	break;
1323	}
1324
1325	req->errorno = errno;
1326
1327	X_LOCK (reslock);
1328
1329	++npending;
1330
1331	if (!reqq_push (&res_queue, req))
1332	{
1333	/* write a dummy byte to the pipe so fh becomes ready */
1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1335
1336	/* optionally signal the main thread asynchronously */
1337	if (main_sig)
1338	pthread_kill (main_tid, main_sig);
1339	}
1340
1341	self->req = 0;
1342	worker_clear (self);
1343
1344	X_UNLOCK (reslock);
1345	}
1346
1347	quit:
1348	X_LOCK (wrklock);
1349	worker_free (self);
1350	X_UNLOCK (wrklock);
1351
1352	return 0;
1353	}//D
1354	}
1355
1356	/*****************************************************************************/
1357
1358	static void atfork_prepare (void)
1359	{
1360	X_LOCK (wrklock);
1361	X_LOCK (reqlock);
1362	X_LOCK (reslock);
1363	#if !HAVE_PREADWRITE
1364	X_LOCK (preadwritelock);
1365	#endif
1366	#if !HAVE_READDIR_R
1367	X_LOCK (readdirlock);
1368	#endif
1369	}
1370
1371	static void atfork_parent (void)
1372	{
1373	#if !HAVE_READDIR_R
1374	X_UNLOCK (readdirlock);
1375	#endif
1376	#if !HAVE_PREADWRITE
1377	X_UNLOCK (preadwritelock);
1378	#endif
1379	X_UNLOCK (reslock);
1380	X_UNLOCK (reqlock);
1381	X_UNLOCK (wrklock);
1382	}
1383
1384	static void atfork_child (void)
1385	{
1386	aio_req prv;
1387
1388	while (prv = reqq_shift (&req_queue))
1389	req_destroy (prv);
1390
1391	while (prv = reqq_shift (&res_queue))
1392	req_destroy (prv);
1393
1394	while (wrk_first.next != &wrk_first)
1395	{
1396	worker *wrk = wrk_first.next;
1397
1398	if (wrk->req)
1399	req_destroy (wrk->req);
1400
1401	worker_clear (wrk);
1402	worker_free (wrk);
1403	}
1404
1405	started = 0;
1406	idle = 0;
1407	nreqs = 0;
1408	nready = 0;
1409	npending = 0;
1410
1411	create_respipe ();
1412
1413	atfork_parent ();
1414	}
1415
1416	#define dREQ \
1417	aio_req req; \
1418	int req_pri = next_pri; \
1419	next_pri = DEFAULT_PRI + PRI_BIAS; \
1420	\
1421	if (SvOK (callback) && !SvROK (callback)) \
1422	croak ("callback must be undef or of reference type"); \
1423	\
1424	Newz (0, req, 1, aio_cb); \
1425	if (!req) \
1426	croak ("out of memory during aio_req allocation"); \
1427	\
1428	req->callback = newSVsv (callback); \
1429	req->pri = req_pri
1430
1431	#define REQ_SEND \
1432	req_send (req); \
1433	\
1434	if (GIMME_V != G_VOID) \
1435	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1436
1437	MODULE = IO::AIO PACKAGE = IO::AIO	899	MODULE = IO::AIO PACKAGE = IO::AIO
1438		900
1439	PROTOTYPES: ENABLE	901	PROTOTYPES: ENABLE
1440		902
1441	BOOT:	903	BOOT:
1442	{	904	{
		905	static const struct {
		906	const char *name;
		907	IV iv;
		908	} *civ, const_iv[] = {
		909	# define const_niv(name, value) { # name, (IV) value },
		910	# define const_iv(name) { # name, (IV) name },
		911	# define const_eio(name) { # name, (IV) EIO_ ## name },
		912
		913	/* you have to re-run ./gendef0 after adding/removing any constants here */
		914	/* the first block can be undef if missing */
		915	const_iv (ENOSYS)
		916	const_iv (EXDEV)
		917	const_iv (EBADR)
		918
		919	/* for lseek */
		920	const_iv (SEEK_DATA)
		921	const_iv (SEEK_HOLE)
		922
		923	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		924	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		925	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		926	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		927	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		928	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		929
		930	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		931	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		932	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		933	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		934	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		935
		936	/* the second block will be 0 when missing */
		937	const_iv (O_RDONLY)
		938	const_iv (O_WRONLY)
		939	const_iv (O_RDWR)
		940	const_iv (O_CREAT)
		941	const_iv (O_TRUNC)
		942	const_iv (O_EXCL)
		943	const_iv (O_APPEND)
		944
		945	const_iv (O_ASYNC)
		946	const_iv (O_DIRECT)
		947	const_iv (O_NOATIME)
		948
		949	const_iv (O_CLOEXEC)
		950	const_iv (O_NOCTTY)
		951	const_iv (O_NOFOLLOW)
		952	const_iv (O_NONBLOCK)
		953	const_iv (O_EXEC)
		954	const_iv (O_SEARCH)
		955	const_iv (O_DIRECTORY)
		956	const_iv (O_DSYNC)
		957	const_iv (O_RSYNC)
		958	const_iv (O_SYNC)
		959	const_iv (O_PATH)
		960	const_iv (O_TMPFILE)
		961	const_iv (O_TTY_INIT)
		962
		963	const_iv (S_IFIFO)
		964	const_iv (S_IFCHR)
		965	const_iv (S_IFBLK)
		966	const_iv (S_IFLNK)
		967	const_iv (S_IFREG)
		968	const_iv (S_IFDIR)
		969	const_iv (S_IFWHT)
		970	const_iv (S_IFSOCK)
		971	const_iv (S_IFMT)
		972
		973	const_iv (ST_RDONLY)
		974	const_iv (ST_NOSUID)
		975	const_iv (ST_NODEV)
		976	const_iv (ST_NOEXEC)
		977	const_iv (ST_SYNCHRONOUS)
		978	const_iv (ST_MANDLOCK)
		979	const_iv (ST_WRITE)
		980	const_iv (ST_APPEND)
		981	const_iv (ST_IMMUTABLE)
		982	const_iv (ST_NOATIME)
		983	const_iv (ST_NODIRATIME)
		984	const_iv (ST_RELATIME)
		985
		986	const_iv (PROT_NONE)
		987	const_iv (PROT_EXEC)
		988	const_iv (PROT_READ)
		989	const_iv (PROT_WRITE)
		990
		991	const_iv (MAP_PRIVATE)
		992	const_iv (MAP_SHARED)
		993	const_iv (MAP_FIXED)
		994	const_iv (MAP_ANONYMOUS)
		995
		996	/* linuxish */
		997	const_iv (MAP_LOCKED)
		998	const_iv (MAP_NORESERVE)
		999	const_iv (MAP_POPULATE)
		1000	const_iv (MAP_NONBLOCK)
		1001	const_iv (MAP_GROWSDOWN)
		1002	const_iv (MAP_32BIT)
		1003	const_iv (MAP_HUGETLB)
		1004	const_iv (MAP_STACK)
		1005
		1006	const_iv (F_DUPFD_CLOEXEC)
		1007
		1008	const_iv (F_OFD_GETLK)
		1009	const_iv (F_OFD_SETLK)
		1010	const_iv (F_OFD_GETLKW)
		1011
		1012	const_iv (FIFREEZE)
		1013	const_iv (FITHAW)
		1014	const_iv (FITRIM)
		1015	const_iv (FICLONE)
		1016	const_iv (FICLONERANGE)
		1017	const_iv (FIDEDUPERANGE)
		1018
		1019	const_iv (FS_IOC_GETFLAGS)
		1020	const_iv (FS_IOC_SETFLAGS)
		1021	const_iv (FS_IOC_GETVERSION)
		1022	const_iv (FS_IOC_SETVERSION)
		1023	const_iv (FS_IOC_FIEMAP)
		1024	const_iv (FS_IOC_FSGETXATTR)
		1025	const_iv (FS_IOC_FSSETXATTR)
		1026	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1027	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1028	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1029
		1030	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1031
		1032	const_iv (FS_SECRM_FL)
		1033	const_iv (FS_UNRM_FL)
		1034	const_iv (FS_COMPR_FL)
		1035	const_iv (FS_SYNC_FL)
		1036	const_iv (FS_IMMUTABLE_FL)
		1037	const_iv (FS_APPEND_FL)
		1038	const_iv (FS_NODUMP_FL)
		1039	const_iv (FS_NOATIME_FL)
		1040	const_iv (FS_DIRTY_FL)
		1041	const_iv (FS_COMPRBLK_FL)
		1042	const_iv (FS_NOCOMP_FL)
		1043	const_iv (FS_ENCRYPT_FL)
		1044	const_iv (FS_BTREE_FL)
		1045	const_iv (FS_INDEX_FL)
		1046	const_iv (FS_JOURNAL_DATA_FL)
		1047	const_iv (FS_NOTAIL_FL)
		1048	const_iv (FS_DIRSYNC_FL)
		1049	const_iv (FS_TOPDIR_FL)
		1050	const_iv (FS_FL_USER_MODIFIABLE)
		1051
		1052	const_iv (FS_XFLAG_REALTIME)
		1053	const_iv (FS_XFLAG_PREALLOC)
		1054	const_iv (FS_XFLAG_IMMUTABLE)
		1055	const_iv (FS_XFLAG_APPEND)
		1056	const_iv (FS_XFLAG_SYNC)
		1057	const_iv (FS_XFLAG_NOATIME)
		1058	const_iv (FS_XFLAG_NODUMP)
		1059	const_iv (FS_XFLAG_RTINHERIT)
		1060	const_iv (FS_XFLAG_PROJINHERIT)
		1061	const_iv (FS_XFLAG_NOSYMLINKS)
		1062	const_iv (FS_XFLAG_EXTSIZE)
		1063	const_iv (FS_XFLAG_EXTSZINHERIT)
		1064	const_iv (FS_XFLAG_NODEFRAG)
		1065	const_iv (FS_XFLAG_FILESTREAM)
		1066	const_iv (FS_XFLAG_DAX)
		1067	const_iv (FS_XFLAG_HASATTR)
		1068
		1069	const_iv (FIEMAP_FLAG_SYNC)
		1070	const_iv (FIEMAP_FLAG_XATTR)
		1071	const_iv (FIEMAP_FLAGS_COMPAT)
		1072	const_iv (FIEMAP_EXTENT_LAST)
		1073	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1074	const_iv (FIEMAP_EXTENT_DELALLOC)
		1075	const_iv (FIEMAP_EXTENT_ENCODED)
		1076	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1077	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1078	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1079	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1080	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1081	const_iv (FIEMAP_EXTENT_MERGED)
		1082	const_iv (FIEMAP_EXTENT_SHARED)
		1083
		1084	const_iv (SPLICE_F_MOVE)
		1085	const_iv (SPLICE_F_NONBLOCK)
		1086	const_iv (SPLICE_F_MORE)
		1087	const_iv (SPLICE_F_GIFT)
		1088
		1089	/* these are libeio constants, and are independent of gendef0 */
		1090	const_eio (SEEK_SET)
		1091	const_eio (SEEK_CUR)
		1092	const_eio (SEEK_END)
		1093
		1094	const_eio (MCL_FUTURE)
		1095	const_eio (MCL_CURRENT)
		1096
		1097	const_eio (MS_ASYNC)
		1098	const_eio (MS_INVALIDATE)
		1099	const_eio (MS_SYNC)
		1100
		1101	const_eio (MT_MODIFY)
		1102
		1103	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1104	const_eio (SYNC_FILE_RANGE_WRITE)
		1105	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1106
		1107	const_eio (FALLOC_FL_KEEP_SIZE)
		1108	const_eio (FALLOC_FL_PUNCH_HOLE)
		1109	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1110	const_eio (FALLOC_FL_ZERO_RANGE)
		1111	const_eio (FALLOC_FL_INSERT_RANGE)
		1112	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1113
		1114	const_eio (RENAME_NOREPLACE)
		1115	const_eio (RENAME_EXCHANGE)
		1116	const_eio (RENAME_WHITEOUT)
		1117
		1118	const_eio (READDIR_DENTS)
		1119	const_eio (READDIR_DIRS_FIRST)
		1120	const_eio (READDIR_STAT_ORDER)
		1121	const_eio (READDIR_FOUND_UNKNOWN)
		1122
		1123	const_eio (DT_UNKNOWN)
		1124	const_eio (DT_FIFO)
		1125	const_eio (DT_CHR)
		1126	const_eio (DT_DIR)
		1127	const_eio (DT_BLK)
		1128	const_eio (DT_REG)
		1129	const_eio (DT_LNK)
		1130	const_eio (DT_SOCK)
		1131	const_eio (DT_WHT)
		1132	};
		1133
1443	stash = gv_stashpv ("IO::AIO", 1);	1134	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1135	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1136	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1137	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1444		1138
1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1139	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1140	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1450	#ifdef _WIN32
1451	X_MUTEX_CHECK (wrklock);
1452	X_MUTEX_CHECK (reslock);
1453	X_MUTEX_CHECK (reqlock);
1454	X_MUTEX_CHECK (reqwait);
1455	X_MUTEX_CHECK (preadwritelock);
1456	X_MUTEX_CHECK (readdirlock);
1457		1141
1458	X_COND_CHECK (reqwait);	1142	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1459	#else
1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1462	#endif
1463		1143
1464	create_respipe ();	1144	reinit ();
1465
1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1467	}	1145	}
1468		1146
1469	void	1147	void
		1148	reinit ()
		1149	PROTOTYPE:
		1150
		1151	void
1470	max_poll_reqs (int nreqs)	1152	max_poll_reqs (unsigned int nreqs)
1471	PROTOTYPE: $	1153	PROTOTYPE: $
1472	CODE:	1154	CODE:
1473	max_poll_reqs = nreqs;	1155	eio_set_max_poll_reqs (nreqs);
1474		1156
1475	void	1157	void
1476	max_poll_time (double nseconds)	1158	max_poll_time (double nseconds)
1477	PROTOTYPE: $	1159	PROTOTYPE: $
1478	CODE:	1160	CODE:
1479	max_poll_time = nseconds * AIO_TICKS;	1161	eio_set_max_poll_time (nseconds);
1480		1162
1481	void	1163	void
1482	min_parallel (int nthreads)	1164	min_parallel (unsigned int nthreads)
1483	PROTOTYPE: $
1484
1485	void
1486	max_parallel (int nthreads)
1487	PROTOTYPE: $
1488
1489	void
1490	max_idle (int nthreads)
1491	PROTOTYPE: $	1165	PROTOTYPE: $
1492	CODE:	1166	CODE:
1493	set_max_idle (nthreads);	1167	eio_set_min_parallel (nthreads);
1494		1168
1495	int	1169	void
1496	max_outstanding (int maxreqs)	1170	max_parallel (unsigned int nthreads)
1497	PROTOTYPE: $	1171	PROTOTYPE: $
1498	CODE:	1172	CODE:
1499	RETVAL = max_outstanding;	1173	eio_set_max_parallel (nthreads);
		1174
		1175	void
		1176	max_idle (unsigned int nthreads)
		1177	PROTOTYPE: $
		1178	CODE:
		1179	eio_set_max_idle (nthreads);
		1180
		1181	void
		1182	idle_timeout (unsigned int seconds)
		1183	PROTOTYPE: $
		1184	CODE:
		1185	eio_set_idle_timeout (seconds);
		1186
		1187	void
		1188	max_outstanding (unsigned int maxreqs)
		1189	PROTOTYPE: $
		1190	CODE:
1500	max_outstanding = maxreqs;	1191	max_outstanding = maxreqs;
1501	OUTPUT:
1502	RETVAL
1503		1192
1504	void	1193	void
1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1194	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1506	PROTOTYPE: $$$;$
1507	PPCODE:	1195	PPCODE:
1508	{	1196	{
1509	dREQ;	1197	dREQ;
1510		1198
		1199	req->type = EIO_WD_OPEN;
		1200	req_set_path1 (req, pathname);
		1201
		1202	REQ_SEND;
		1203	}
		1204
		1205	void
		1206	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1207	PPCODE:
		1208	{
		1209	dREQ;
		1210
1511	req->type = REQ_OPEN;	1211	req->type = EIO_OPEN;
1512	req->sv1 = newSVsv (pathname);	1212	req_set_path1 (req, pathname);
1513	req->ptr1 = SvPVbyte_nolen (req->sv1);
1514	req->int1 = flags;	1213	req->int1 = flags;
1515	req->mode = mode;	1214	req->int2 = mode;
1516		1215
1517	REQ_SEND;	1216	REQ_SEND;
1518	}	1217	}
1519		1218
1520	void	1219	void
1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1220	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1522	PROTOTYPE: $;$
1523	ALIAS:	1221	ALIAS:
1524	aio_fsync = REQ_FSYNC	1222	aio_fsync = EIO_FSYNC
1525	aio_fdatasync = REQ_FDATASYNC	1223	aio_fdatasync = EIO_FDATASYNC
		1224	aio_syncfs = EIO_SYNCFS
1526	PPCODE:	1225	PPCODE:
1527	{	1226	{
		1227	int fd = s_fileno_croak (fh, 0);
1528	dREQ;	1228	dREQ;
1529		1229
1530	req->type = ix;	1230	req->type = ix;
1531	req->sv1 = newSVsv (fh);	1231	req->sv1 = newSVsv (fh);
1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1232	req->int1 = fd;
1533		1233
1534	REQ_SEND (req);	1234	REQ_SEND;
1535	}	1235	}
1536		1236
1537	void	1237	void
1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1238	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1539	PROTOTYPE: $;$
1540	PPCODE:	1239	PPCODE:
1541	{	1240	{
1542	PerlIO *io = IoIFP (sv_2io (fh));	1241	int fd = s_fileno_croak (fh, 0);
1543	int fd = PerlIO_fileno (io);
1544
1545	if (fd < 0)
1546	croak ("aio_close called with fd-less filehandle");
1547
1548	PerlIO_binmode (io, 0, 0, 0);
1549
1550	{
1551	dREQ;	1242	dREQ;
1552		1243
1553	req->type = REQ_CLOSE;	1244	req->type = EIO_SYNC_FILE_RANGE;
1554	req->sv1 = newSVsv (fh);	1245	req->sv1 = newSVsv (fh);
1555	req->ptr1 = (void *)io;	1246	req->int1 = fd;
		1247	req->offs = offset;
		1248	req->size = nbytes;
		1249	req->int2 = flags;
1556		1250
1557	REQ_SEND (req);	1251	REQ_SEND;
		1252	}
		1253
		1254	void
		1255	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1256	PPCODE:
		1257	{
		1258	int fd = s_fileno_croak (fh, 0);
		1259	dREQ;
		1260
		1261	req->type = EIO_FALLOCATE;
		1262	req->sv1 = newSVsv (fh);
		1263	req->int1 = fd;
		1264	req->int2 = mode;
		1265	req->offs = offset;
		1266	req->size = len;
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1273	PPCODE:
		1274	{
		1275	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1276	int fd = s_fileno_croak (fh, 0);
		1277	dREQ;
		1278
		1279	if (expect_false (close_fd < 0))
		1280	{
		1281	int pipefd [2];
		1282
		1283	if (
		1284	#ifdef _WIN32
		1285	_pipe (pipefd, 1, _O_BINARY) < 0
		1286	#else
		1287	pipe (pipefd) < 0
		1288	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1289	#endif
		1290	|| close (pipefd [1]) < 0
		1291	)
		1292	abort (); /*D*/
		1293
		1294	close_fd = pipefd [0];
1558	}	1295	}
1559	}
1560		1296
		1297	req->type = EIO_DUP2;
		1298	req->int1 = close_fd;
		1299	req->sv2 = newSVsv (fh);
		1300	req->int2 = fd;
		1301
		1302	REQ_SEND;
		1303	}
		1304
1561	void	1305	void
		1306	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1307	PPCODE:
		1308	{
		1309	int fd = s_fileno_croak (fh, 0);
		1310	dREQ;
		1311
		1312	req->type = EIO_SEEK;
		1313	req->sv1 = newSVsv (fh);
		1314	req->int1 = fd;
		1315	req->offs = SvVAL64 (offset);
		1316	req->int2 = whence;
		1317
		1318	REQ_SEND;
		1319	}
		1320
		1321	void
1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1322	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1563	ALIAS:	1323	ALIAS:
1564	aio_read = REQ_READ	1324	aio_read = EIO_READ
1565	aio_write = REQ_WRITE	1325	aio_write = EIO_WRITE
1566	PROTOTYPE: $$$$$;$
1567	PPCODE:	1326	PPCODE:
1568	{	1327	{
1569	STRLEN svlen;	1328	STRLEN svlen;
		1329	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1570	char *svptr = SvPVbyte (data, svlen);	1330	char *svptr = SvPVbyte (data, svlen);
1571	UV len = SvUV (length);	1331	UV len = SvUV (length);
1572		1332
1573	SvUPGRADE (data, SVt_PV);
1574	SvPOK_on (data);
1575
1576	if (dataoffset < 0)	1333	if (dataoffset < 0)
1577	dataoffset += svlen;	1334	dataoffset += svlen;
1578		1335
1579	if (dataoffset < 0 || dataoffset > svlen)	1336	if (dataoffset < 0 || dataoffset > svlen)
1580	croak ("dataoffset outside of data scalar");	1337	croak ("dataoffset outside of data scalar");
1581		1338
1582	if (ix == REQ_WRITE)	1339	if (ix == EIO_WRITE)
1583	{	1340	{
1584	/* write: check length and adjust. */	1341	/* write: check length and adjust. */
1585	if (!SvOK (length) || len + dataoffset > svlen)	1342	if (!SvOK (length) || len + dataoffset > svlen)
1586	len = svlen - dataoffset;	1343	len = svlen - dataoffset;
1587	}	1344	}
1588	else	1345	else
1589	{	1346	{
1590	/* read: grow scalar as necessary */	1347	/* read: check type and grow scalar as necessary */
		1348	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1591	svptr = SvGROW (data, len + dataoffset + 1);	1349	svptr = sv_grow (data, len + dataoffset + 1);
		1350	else if (SvCUR (data) < len + dataoffset)
		1351	croak ("length + dataoffset outside of scalar, and cannot grow");
1592	}	1352	}
1593
1594	if (len < 0)
1595	croak ("length must not be negative");
1596		1353
1597	{	1354	{
1598	dREQ;	1355	dREQ;
1599		1356
1600	req->type = ix;	1357	req->type = ix;
1601	req->sv1 = newSVsv (fh);	1358	req->sv1 = newSVsv (fh);
1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1359	req->int1 = fd;
1603	: IoOFP (sv_2io (fh)));
1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1360	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1605	req->size = len;	1361	req->size = len;
1606	req->sv2 = SvREFCNT_inc (data);	1362	req->sv2 = SvREFCNT_inc (data);
1607	req->ptr1 = (char *)svptr + dataoffset;	1363	req->ptr2 = (char *)svptr + dataoffset;
1608	req->stroffset = dataoffset;	1364	req->stroffset = dataoffset;
1609		1365
1610	if (!SvREADONLY (data))	1366	if (!SvREADONLY (data))
1611	{	1367	{
1612	SvREADONLY_on (data);	1368	SvREADONLY_on (data);
…		…
1616	REQ_SEND;	1372	REQ_SEND;
1617	}	1373	}
1618	}	1374	}
1619		1375
1620	void	1376	void
1621	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1377	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1622	PROTOTYPE: $$;$	1378	ALIAS:
		1379	aio_ioctl = EIO_IOCTL
		1380	aio_fcntl = EIO_FCNTL
1623	PPCODE:	1381	PPCODE:
1624	{	1382	{
1625	SV *data;	1383	int fd = s_fileno_croak (fh, 0);
1626	dREQ;	1384	char *svptr;
1627		1385
1628	data = newSV (NAME_MAX);	1386	if (SvPOK (arg) || !SvNIOK (arg))
1629	SvPOK_on (data);
1630
1631	req->type = REQ_READLINK;
1632	req->sv1 = newSVsv (path);
1633	req->ptr2 = SvPVbyte_nolen (req->sv1);
1634	req->sv2 = data;
1635	req->ptr1 = SvPVbyte_nolen (data);
1636
1637	REQ_SEND;
1638	}
1639
1640	void
1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1642	PROTOTYPE: $$$$;$
1643	PPCODE:
1644	{
1645	dREQ;
1646
1647	req->type = REQ_SENDFILE;
1648	req->sv1 = newSVsv (out_fh);
1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1650	req->sv2 = newSVsv (in_fh);
1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1652	req->offs = SvVAL64 (in_offset);
1653	req->size = length;
1654
1655	REQ_SEND;
1656	}
1657
1658	void
1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$;$
1661	PPCODE:
1662	{
1663	dREQ;
1664
1665	req->type = REQ_READAHEAD;
1666	req->sv1 = newSVsv (fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1668	req->offs = SvVAL64 (offset);
1669	req->size = length;
1670
1671	REQ_SEND;
1672	}
1673
1674	void
1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1676	ALIAS:
1677	aio_stat = REQ_STAT
1678	aio_lstat = REQ_LSTAT
1679	PPCODE:
1680	{
1681	dREQ;
1682
1683	req->ptr2 = malloc (sizeof (Stat_t));
1684	if (!req->ptr2)
1685	{	1387	{
1686	req_destroy (req);	1388	STRLEN svlen;
1687	croak ("out of memory during aio_stat statdata allocation");	1389	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1688	}	1390	#ifdef IOCPARM_LEN
		1391	STRLEN need = IOCPARM_LEN (request);
		1392	#else
		1393	STRLEN need = 256;
		1394	#endif
1689		1395
1690	req->flags |= FLAG_PTR2_FREE;	1396	if (svlen < need)
1691	req->sv1 = newSVsv (fh_or_path);	1397	svptr = SvGROW (arg, need);
1692
1693	if (SvPOK (fh_or_path))
1694	{
1695	req->type = ix;
1696	req->ptr1 = SvPVbyte_nolen (req->sv1);
1697	}	1398	}
1698	else	1399	else
		1400	svptr = (char *)SvIV (arg);
		1401
1699	{	1402	{
		1403	dREQ;
		1404
1700	req->type = REQ_FSTAT;	1405	req->type = ix;
1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1406	req->sv1 = newSVsv (fh);
		1407	req->int1 = fd;
		1408	req->int2 = (long)request;
		1409	req->sv2 = SvREFCNT_inc (arg);
		1410	req->ptr2 = svptr;
		1411
		1412	REQ_SEND;
1702	}	1413	}
		1414	}
		1415
		1416	void
		1417	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1418	ALIAS:
		1419	aio_readlink = EIO_READLINK
		1420	aio_realpath = EIO_REALPATH
		1421	PPCODE:
		1422	{
		1423	dREQ;
		1424
		1425	req->type = ix;
		1426	req_set_path1 (req, pathname);
1703		1427
1704	REQ_SEND;	1428	REQ_SEND;
1705	}	1429	}
1706		1430
1707	void	1431	void
		1432	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1433	PPCODE:
		1434	{
		1435	int ifd = s_fileno_croak (in_fh , 0);
		1436	int ofd = s_fileno_croak (out_fh, 1);
		1437	dREQ;
		1438
		1439	req->type = EIO_SENDFILE;
		1440	req->sv1 = newSVsv (out_fh);
		1441	req->int1 = ofd;
		1442	req->sv2 = newSVsv (in_fh);
		1443	req->int2 = ifd;
		1444	req->offs = in_offset;
		1445	req->size = length;
		1446
		1447	REQ_SEND;
		1448	}
		1449
		1450	void
		1451	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1452	PPCODE:
		1453	{
		1454	int fd = s_fileno_croak (fh, 0);
		1455	dREQ;
		1456
		1457	req->type = EIO_READAHEAD;
		1458	req->sv1 = newSVsv (fh);
		1459	req->int1 = fd;
		1460	req->offs = offset;
		1461	req->size = length;
		1462
		1463	REQ_SEND;
		1464	}
		1465
		1466	void
		1467	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1468	ALIAS:
		1469	aio_stat = EIO_STAT
		1470	aio_lstat = EIO_LSTAT
		1471	aio_statvfs = EIO_STATVFS
		1472	PPCODE:
		1473	{
		1474	dREQ;
		1475
		1476	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1477
		1478	REQ_SEND;
		1479	}
		1480
		1481	UV
		1482	major (UV dev)
		1483	ALIAS:
		1484	minor = 1
		1485	CODE:
		1486	RETVAL = ix ? minor (dev) : major (dev);
		1487	OUTPUT:
		1488	RETVAL
		1489
		1490	UV
		1491	makedev (UV maj, UV min)
		1492	CODE:
		1493	RETVAL = makedev (maj, min);
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void
1708	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1498	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1709	PPCODE:	1499	PPCODE:
1710	{	1500	{
1711	dREQ;	1501	dREQ;
1712		1502
1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1503	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1504	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1715	req->sv1 = newSVsv (fh_or_path);	1505	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1716
1717	if (SvPOK (fh_or_path))
1718	{
1719	req->type = REQ_UTIME;
1720	req->ptr1 = SvPVbyte_nolen (req->sv1);
1721	}
1722	else
1723	{
1724	req->type = REQ_FUTIME;
1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1726	}
1727		1506
1728	REQ_SEND;	1507	REQ_SEND;
1729	}	1508	}
1730		1509
1731	void	1510	void
1732	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1511	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1733	PPCODE:	1512	PPCODE:
1734	{	1513	{
1735	dREQ;	1514	dREQ;
1736		1515
1737	req->sv1 = newSVsv (fh_or_path);
1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1516	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1739		1517	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1740	if (SvPOK (fh_or_path))
1741	{
1742	req->type = REQ_TRUNCATE;
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	}
1745	else
1746	{
1747	req->type = REQ_FTRUNCATE;
1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1749	}
1750		1518
1751	REQ_SEND;	1519	REQ_SEND;
1752	}	1520	}
1753		1521
1754	void	1522	void
1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1523	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1756	PPCODE:	1524	PPCODE:
1757	{	1525	{
1758	dREQ;	1526	dREQ;
1759		1527
1760	req->mode = mode;	1528	req->int2 = mode;
1761	req->sv1 = newSVsv (fh_or_path);	1529	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1762
1763	if (SvPOK (fh_or_path))
1764	{
1765	req->type = REQ_CHMOD;
1766	req->ptr1 = SvPVbyte_nolen (req->sv1);
1767	}
1768	else
1769	{
1770	req->type = REQ_FCHMOD;
1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1772	}
1773		1530
1774	REQ_SEND;	1531	REQ_SEND;
1775	}	1532	}
1776		1533
1777	void	1534	void
1778	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1535	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1779	PPCODE:	1536	PPCODE:
1780	{	1537	{
1781	dREQ;	1538	dREQ;
1782		1539
1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1540	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1541	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1785	req->sv1 = newSVsv (fh_or_path);	1542	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1786
1787	if (SvPOK (fh_or_path))
1788	{
1789	req->type = REQ_CHOWN;
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791	}
1792	else
1793	{
1794	req->type = REQ_FCHOWN;
1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1796	}
1797		1543
1798	REQ_SEND;	1544	REQ_SEND;
1799	}	1545	}
1800		1546
1801	void	1547	void
		1548	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1549	PPCODE:
		1550	{
		1551	dREQ;
		1552
		1553	req->type = EIO_READDIR;
		1554	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1555
		1556	if (flags & EIO_READDIR_DENTS)
		1557	req->int1 |= EIO_READDIR_CUSTOM2;
		1558
		1559	req_set_path1 (req, pathname);
		1560
		1561	REQ_SEND;
		1562	}
		1563
		1564	void
		1565	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1566	PPCODE:
		1567	{
		1568	dREQ;
		1569
		1570	req->type = EIO_MKDIR;
		1571	req->int2 = mode;
		1572	req_set_path1 (req, pathname);
		1573
		1574	REQ_SEND;
		1575	}
		1576
		1577	void
1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1578	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1803	ALIAS:	1579	ALIAS:
1804	aio_unlink = REQ_UNLINK	1580	aio_unlink = EIO_UNLINK
1805	aio_rmdir = REQ_RMDIR	1581	aio_rmdir = EIO_RMDIR
1806	aio_readdir = REQ_READDIR	1582	aio_readdir = EIO_READDIR
1807	PPCODE:	1583	PPCODE:
1808	{	1584	{
1809	dREQ;	1585	dREQ;
1810		1586
1811	req->type = ix;	1587	req->type = ix;
1812	req->sv1 = newSVsv (pathname);	1588	req_set_path1 (req, pathname);
1813	req->ptr1 = SvPVbyte_nolen (req->sv1);
1814		1589
1815	REQ_SEND;	1590	REQ_SEND;
1816	}	1591	}
1817		1592
1818	void	1593	void
1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1594	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1595	ALIAS:
		1596	aio_link = EIO_LINK
		1597	aio_symlink = EIO_SYMLINK
		1598	aio_rename = EIO_RENAME
1820	PPCODE:	1599	PPCODE:
1821	{	1600	{
1822	dREQ;	1601	eio_wd wd2 = 0;
1823
1824	req->type = REQ_MKDIR;
1825	req->sv1 = newSVsv (pathname);
1826	req->ptr1 = SvPVbyte_nolen (req->sv1);
1827	req->mode = mode;
1828
1829	REQ_SEND;
1830	}
1831
1832	void
1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1834	ALIAS:
1835	aio_link = REQ_LINK
1836	aio_symlink = REQ_SYMLINK
1837	aio_rename = REQ_RENAME
1838	PPCODE:
1839	{
1840	dREQ;	1602	dREQ;
1841		1603
1842	req->type = ix;	1604	req->type = ix;
1843	req->sv2 = newSVsv (oldpath);	1605	req_set_path1 (req, oldpath);
1844	req->ptr2 = SvPVbyte_nolen (req->sv2);	1606	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1845	req->sv1 = newSVsv (newpath);	1607	req->int3 = (long)wd2;
1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1847		1608
1848	REQ_SEND;	1609	REQ_SEND;
1849	}	1610	}
1850		1611
1851	void	1612	void
1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1613	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1853	PPCODE:	1614	PPCODE:
1854	{	1615	{
		1616	eio_wd wd2 = 0;
1855	dREQ;	1617	dREQ;
1856		1618
1857	req->type = REQ_MKNOD;	1619	req->type = EIO_RENAME;
1858	req->sv1 = newSVsv (pathname);	1620	req_set_path1 (req, oldpath);
1859	req->ptr1 = SvPVbyte_nolen (req->sv1);	1621	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1860	req->mode = (mode_t)mode;	1622	req->int2 = flags;
1861	req->offs = dev;	1623	req->int3 = (long)wd2;
1862		1624
1863	REQ_SEND;	1625	REQ_SEND;
1864	}	1626	}
1865		1627
1866	void	1628	void
1867	aio_busy (double delay, SV *callback=&PL_sv_undef)	1629	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1868	PPCODE:	1630	PPCODE:
1869	{	1631	{
1870	dREQ;	1632	dREQ;
		1633
		1634	req->type = EIO_MKNOD;
		1635	req->int2 = (mode_t)mode;
		1636	req->offs = dev;
		1637	req_set_path1 (req, pathname);
		1638
		1639	REQ_SEND;
		1640	}
1871		1641
		1642	void
		1643	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1644	ALIAS:
		1645	aio_mtouch = EIO_MTOUCH
		1646	aio_msync = EIO_MSYNC
		1647	PPCODE:
		1648	{
		1649	STRLEN svlen;
		1650	char *svptr = SvPVbyte (data, svlen);
		1651	UV len = SvUV (length);
		1652
		1653	if (flags < 0)
		1654	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1655
		1656	if (offset < 0)
		1657	offset += svlen;
		1658
		1659	if (offset < 0 || offset > svlen)
		1660	croak ("offset outside of scalar");
		1661
		1662	if (!SvOK (length) || len + offset > svlen)
		1663	len = svlen - offset;
		1664
		1665	{
		1666	dREQ;
		1667
		1668	req->type = ix;
		1669	req->sv2 = SvREFCNT_inc (data);
		1670	req->ptr2 = (char *)svptr + offset;
		1671	req->size = len;
		1672	req->int1 = flags;
		1673
		1674	REQ_SEND;
		1675	}
		1676	}
		1677
		1678	void
		1679	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1680	PPCODE:
		1681	{
		1682	STRLEN svlen;
		1683	char *svptr = SvPVbyte (data, svlen);
		1684	UV len = SvUV (length);
		1685
		1686	if (offset < 0)
		1687	offset += svlen;
		1688
		1689	if (offset < 0 || offset > svlen)
		1690	croak ("offset outside of scalar");
		1691
		1692	if (!SvOK (length) || len + offset > svlen)
		1693	len = svlen - offset;
		1694
		1695	{
		1696	dREQ;
		1697
		1698	req->type = EIO_MLOCK;
		1699	req->sv2 = SvREFCNT_inc (data);
		1700	req->ptr2 = (char *)svptr + offset;
		1701	req->size = len;
		1702
		1703	REQ_SEND;
		1704	}
		1705	}
		1706
		1707	void
		1708	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
		1712
		1713	req->type = EIO_MLOCKALL;
		1714	req->int1 = flags;
		1715
		1716	REQ_SEND;
		1717	}
		1718
		1719	void
		1720	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1721	PPCODE:
		1722	{
		1723	int fd = s_fileno_croak (fh, 0);
		1724	dREQ;
		1725
		1726	req->type = EIO_CUSTOM;
		1727	req->sv1 = newSVsv (fh);
		1728	req->int1 = fd;
		1729
		1730	req->feed = fiemap;
		1731	#if HAVE_FIEMAP
		1732	/* keep our fingers crossed that the next two types are 64 bit */
		1733	req->offs = start;
		1734	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1735	req->int2 = flags;
		1736	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1737	#endif
		1738
		1739	REQ_SEND;
		1740	}
		1741
		1742	void
		1743	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1744	PPCODE:
		1745	{
		1746	dREQ;
		1747
1872	req->type = REQ_BUSY;	1748	req->type = EIO_BUSY;
1873	req->nv1 = delay < 0. ? 0. : delay;	1749	req->nv1 = delay < 0. ? 0. : delay;
1874		1750
1875	REQ_SEND;	1751	REQ_SEND;
1876	}	1752	}
1877		1753
1878	void	1754	void
1879	aio_group (SV *callback=&PL_sv_undef)	1755	aio_group (SV *callback = &PL_sv_undef)
1880	PROTOTYPE: ;$
1881	PPCODE:	1756	PPCODE:
1882	{	1757	{
1883	dREQ;	1758	dREQ;
1884		1759
1885	req->type = REQ_GROUP;	1760	req->type = EIO_GROUP;
1886		1761
		1762	PUTBACK;
1887	req_send (req);	1763	req_submit (req);
		1764	SPAGAIN;
		1765
1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1766	XPUSHs (req_sv (req, aio_grp_stash));
1889	}	1767	}
1890		1768
1891	void	1769	void
1892	aio_nop (SV *callback=&PL_sv_undef)	1770	aio_nop (SV *callback = &PL_sv_undef)
		1771	ALIAS:
		1772	aio_nop = EIO_NOP
		1773	aio_sync = EIO_SYNC
1893	PPCODE:	1774	PPCODE:
1894	{	1775	{
1895	dREQ;	1776	dREQ;
1896		1777
1897	req->type = REQ_NOP;	1778	req->type = ix;
1898		1779
1899	REQ_SEND;	1780	REQ_SEND;
1900	}	1781	}
1901		1782
1902	int	1783	int
1903	aioreq_pri (int pri = 0)	1784	aioreq_pri (int pri = NO_INIT)
1904	PROTOTYPE: ;$
1905	CODE:	1785	CODE:
1906	RETVAL = next_pri - PRI_BIAS;	1786	RETVAL = next_pri;
1907	if (items > 0)	1787	if (items > 0)
1908	{	1788	{
1909	if (pri < PRI_MIN) pri = PRI_MIN;	1789	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1910	if (pri > PRI_MAX) pri = PRI_MAX;	1790	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1911	next_pri = pri + PRI_BIAS;	1791	next_pri = pri;
1912	}	1792	}
1913	OUTPUT:	1793	OUTPUT:
1914	RETVAL	1794	RETVAL
1915		1795
1916	void	1796	void
1917	aioreq_nice (int nice = 0)	1797	aioreq_nice (int nice = 0)
1918	CODE:	1798	CODE:
1919	nice = next_pri - nice;	1799	nice = next_pri - nice;
1920	if (nice < PRI_MIN) nice = PRI_MIN;	1800	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1921	if (nice > PRI_MAX) nice = PRI_MAX;	1801	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1922	next_pri = nice + PRI_BIAS;	1802	next_pri = nice;
1923		1803
1924	void	1804	void
1925	flush ()	1805	flush ()
1926	PROTOTYPE:
1927	CODE:	1806	CODE:
1928	while (nreqs)	1807	while (eio_nreqs ())
1929	{	1808	{
1930	poll_wait ();	1809	poll_wait ();
1931	poll_cb ();	1810	poll_cb ();
1932	}	1811	}
1933		1812
1934	int	1813	int
1935	poll()	1814	poll ()
1936	PROTOTYPE:
1937	CODE:	1815	CODE:
1938	poll_wait ();	1816	poll_wait ();
1939	RETVAL = poll_cb ();	1817	RETVAL = poll_cb ();
1940	OUTPUT:	1818	OUTPUT:
1941	RETVAL	1819	RETVAL
1942		1820
1943	int	1821	int
1944	poll_fileno()	1822	poll_fileno ()
1945	PROTOTYPE:
1946	CODE:	1823	CODE:
1947	RETVAL = respipe [0];	1824	RETVAL = s_epipe_fd (&respipe);
1948	OUTPUT:	1825	OUTPUT:
1949	RETVAL	1826	RETVAL
1950		1827
1951	int	1828	int
1952	poll_cb(...)	1829	poll_cb (...)
1953	PROTOTYPE:	1830	PROTOTYPE:
1954	CODE:	1831	CODE:
1955	RETVAL = poll_cb ();	1832	RETVAL = poll_cb ();
1956	OUTPUT:	1833	OUTPUT:
1957	RETVAL	1834	RETVAL
1958		1835
1959	void	1836	void
1960	poll_wait()	1837	poll_wait ()
1961	PROTOTYPE:
1962	CODE:	1838	CODE:
1963	poll_wait ();	1839	poll_wait ();
1964		1840
1965	void
1966	setsig (int signum = SIGIO)
1967	PROTOTYPE: ;$
1968	CODE:
1969	{
1970	if (block_sig_level)
1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1972
1973	X_LOCK (reslock);
1974	main_tid = pthread_self ();
1975	main_sig = signum;
1976	X_UNLOCK (reslock);
1977
1978	if (main_sig && npending)
1979	pthread_kill (main_tid, main_sig);
1980	}
1981
1982	void
1983	aio_block (SV *cb)
1984	PROTOTYPE: &
1985	PPCODE:
1986	{
1987	int count;
1988
1989	block_sig ();
1990	PUSHMARK (SP);
1991	PUTBACK;
1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1993	SPAGAIN;
1994	unblock_sig ();
1995
1996	if (SvTRUE (ERRSV))
1997	croak (0);
1998
1999	XSRETURN (count);
2000	}
2001
2002	int	1841	int
2003	nreqs()	1842	nreqs ()
2004	PROTOTYPE:
2005	CODE:	1843	CODE:
2006	RETVAL = nreqs;	1844	RETVAL = eio_nreqs ();
2007	OUTPUT:	1845	OUTPUT:
2008	RETVAL	1846	RETVAL
2009		1847
2010	int	1848	int
2011	nready()	1849	nready ()
2012	PROTOTYPE:
2013	CODE:	1850	CODE:
2014	RETVAL = get_nready ();	1851	RETVAL = eio_nready ();
2015	OUTPUT:	1852	OUTPUT:
2016	RETVAL	1853	RETVAL
2017		1854
2018	int	1855	int
2019	npending()	1856	npending ()
2020	PROTOTYPE:
2021	CODE:	1857	CODE:
2022	RETVAL = get_npending ();	1858	RETVAL = eio_npending ();
2023	OUTPUT:	1859	OUTPUT:
2024	RETVAL	1860	RETVAL
2025		1861
2026	int	1862	int
2027	nthreads()	1863	nthreads ()
2028	PROTOTYPE:
2029	CODE:	1864	CODE:
2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1865	RETVAL = eio_nthreads ();
2031	RETVAL = started;
2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2033	OUTPUT:	1866	OUTPUT:
2034	RETVAL	1867	RETVAL
2035		1868
		1869	int
		1870	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1871	CODE:
		1872	RETVAL = posix_fadvise (fh, offset, length, advice);
		1873	OUTPUT:
		1874	RETVAL
		1875
		1876	IV
		1877	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1878	CODE:
		1879	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	void
		1884	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1885	PPCODE:
		1886	sv_unmagic (scalar, MMAP_MAGIC);
		1887	{
		1888	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1889	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1890	if (addr == (void *)-1)
		1891	XSRETURN_NO;
		1892
		1893	sv_force_normal (scalar);
		1894
		1895	/* we store the length in mg_obj, as namlen is I32 :/ */
		1896	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1897	->mg_obj = (SV *)length;
		1898
		1899	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1900
		1901	if (!(prot & PROT_WRITE))
		1902	SvREADONLY_on (scalar);
		1903
		1904	if (SvLEN (scalar))
		1905	Safefree (SvPVX (scalar));
		1906
		1907	SvPVX (scalar) = (char *)addr;
		1908	SvCUR_set (scalar, length);
		1909	SvLEN_set (scalar, 0);
		1910	SvPOK_only (scalar);
		1911
		1912	XSRETURN_YES;
		1913	}
		1914
		1915	void
		1916	munmap (SV *scalar)
		1917	CODE:
		1918	sv_unmagic (scalar, MMAP_MAGIC);
		1919
		1920	int
		1921	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1922	ALIAS:
		1923	mprotect = 1
		1924	CODE:
		1925	{
		1926	STRLEN svlen;
		1927	void *addr = SvPVbyte (scalar, svlen);
		1928	STRLEN len = SvUV (length);
		1929
		1930	if (offset < 0)
		1931	offset += svlen;
		1932
		1933	if (offset < 0 || offset > svlen)
		1934	croak ("offset outside of scalar");
		1935
		1936	if (!SvOK (length) || len + offset > svlen)
		1937	len = svlen - offset;
		1938
		1939	addr = (void *)(((intptr_t)addr) + offset);
		1940	eio_page_align (&addr, &len);
		1941
		1942	switch (ix)
		1943	{
		1944	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1945	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1946	}
		1947	}
		1948	OUTPUT:
		1949	RETVAL
		1950
		1951	int
		1952	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1953	CODE:
		1954	{
		1955	STRLEN svlen;
		1956	void *addr = SvPVbyte (scalar, svlen);
		1957	size_t len = SvUV (length);
		1958
		1959	if (offset < 0)
		1960	offset += svlen;
		1961
		1962	if (offset < 0 || offset > svlen)
		1963	croak ("offset outside of scalar");
		1964
		1965	if (!SvOK (length) || len + offset > svlen)
		1966	len = svlen - offset;
		1967
		1968	addr = (void *)(((intptr_t)addr) + offset);
		1969	eio_page_align (&addr, &len);
		1970	#if _POSIX_MEMLOCK_RANGE
		1971	RETVAL = munlock (addr, len);
		1972	#else
		1973	RETVAL = EIO_ENOSYS ();
		1974	#endif
		1975	}
		1976	OUTPUT:
		1977	RETVAL
		1978
		1979	int
		1980	munlockall ()
		1981	CODE:
		1982	#if _POSIX_MEMLOCK
		1983	munlockall ();
		1984	#else
		1985	RETVAL = EIO_ENOSYS ();
		1986	#endif
		1987	OUTPUT:
		1988	RETVAL
		1989
		1990	int
		1991	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1992	CODE:
		1993	{
		1994	#if HAVE_LINUX_SPLICE
		1995	loff_t off_in_, off_out_;
		1996	RETVAL = splice (
		1997	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1998	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1999	length, flags
		2000	);
		2001	#else
		2002	RETVAL = EIO_ENOSYS ();
		2003	#endif
		2004	}
		2005	OUTPUT:
		2006	RETVAL
		2007
		2008	int
		2009	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2010	CODE:
		2011	#if HAVE_LINUX_SPLICE
		2012	RETVAL = tee (rfh, wfh, length, flags);
		2013	#else
		2014	RETVAL = EIO_ENOSYS ();
		2015	#endif
		2016	OUTPUT:
		2017	RETVAL
		2018
		2019	int
		2020	pipesize (aio_rfd rfh, int new_size = -1)
		2021	PROTOTYPE: $;$
		2022	CODE:
		2023	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2024	if (new_size >= 0)
		2025	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2026	else
		2027	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2028	#else
		2029	errno = ENOSYS;
		2030	RETVAL = -1;
		2031	#endif
		2032	OUTPUT:
		2033	RETVAL
		2034
		2035	void
		2036	pipe2 (int flags = 0)
		2037	PROTOTYPE: ;$
		2038	PPCODE:
		2039	{
		2040	int fd[2];
		2041	int res;
		2042
		2043	if (flags)
		2044	#if HAVE_PIPE2
		2045	res = pipe2 (fd, flags);
		2046	#else
		2047	res = (errno = ENOSYS, -1);
		2048	#endif
		2049	else
		2050	res = pipe (fd);
		2051
		2052	if (!res)
		2053	{
		2054	EXTEND (SP, 2);
		2055	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2056	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2057	}
		2058	}
		2059
		2060	UV
		2061	get_fdlimit ()
		2062	CODE:
		2063	#if HAVE_RLIMITS
		2064	struct rlimit rl;
		2065	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2066	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2067	#endif
		2068	XSRETURN_UNDEF;
		2069	OUTPUT:
		2070	RETVAL
		2071
		2072	void
		2073	min_fdlimit (UV limit = 0x7fffffffU)
		2074	CODE:
		2075	{
		2076	#if HAVE_RLIMITS
		2077	struct rlimit rl;
		2078	rlim_t orig_rlim_max;
		2079	UV bit;
		2080
		2081	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2082	goto fail;
		2083
		2084	if (rl.rlim_cur == RLIM_INFINITY)
		2085	XSRETURN_YES;
		2086
		2087	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2088
		2089	if (rl.rlim_cur < limit)
		2090	{
		2091	rl.rlim_cur = limit;
		2092
		2093	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2094	rl.rlim_max = rl.rlim_cur;
		2095	}
		2096
		2097	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2098	XSRETURN_YES;
		2099
		2100	if (errno == EPERM)
		2101	{
		2102	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2103	/* our limit overflows a system-wide limit */
		2104	/* try an adaptive algorithm, but do not lower the hardlimit */
		2105	rl.rlim_max = 0;
		2106	for (bit = 0x40000000U; bit; bit >>= 1)
		2107	{
		2108	rl.rlim_max |= bit;
		2109	rl.rlim_cur = rl.rlim_max;
		2110
		2111	/* nevr decrease the hard limit */
		2112	if (rl.rlim_max < orig_rlim_max)
		2113	break;
		2114
		2115	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2116	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2117	}
		2118
		2119	/* now, raise the soft limit to the max permitted */
		2120	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2121	{
		2122	rl.rlim_cur = rl.rlim_max;
		2123	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2124	errno = EPERM;
		2125	}
		2126	}
		2127	#endif
		2128	fail:
		2129	XSRETURN_UNDEF;
		2130	}
		2131
		2132	void _on_next_submit (SV *cb)
		2133	CODE:
		2134	SvREFCNT_dec (on_next_submit);
		2135	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2136
2036	PROTOTYPES: DISABLE	2137	PROTOTYPES: DISABLE
		2138
		2139	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2140
		2141	BOOT:
		2142	{
		2143	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2144	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2145	}
		2146
		2147	void
		2148	DESTROY (SV *self)
		2149	CODE:
		2150	{
		2151	aio_wd wd = SvAIO_WD (self);
		2152	#if HAVE_AT
		2153	{
		2154	SV *callback = &PL_sv_undef;
		2155	dREQ; /* clobbers next_pri :/ */
		2156	next_pri = req->pri; /* restore next_pri */
		2157	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2158	req->type = EIO_WD_CLOSE;
		2159	req->wd = wd;
		2160	REQ_SEND;
		2161	}
		2162	#else
		2163	eio_wd_close_sync (wd);
		2164	#endif
		2165	}
2037		2166
2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2167	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2039		2168
2040	void	2169	void
2041	cancel (aio_req_ornot req)	2170	cancel (aio_req_ornot req)
2042	CODE:	2171	CODE:
2043	req_cancel (req);	2172	eio_cancel (req);
2044		2173
2045	void	2174	void
2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2175	cb (aio_req_ornot req, SV *callback = NO_INIT)
2047	CODE:	2176	PPCODE:
		2177	{
		2178	if (GIMME_V != G_VOID)
		2179	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2180
		2181	if (items > 1)
		2182	{
		2183	SV *cb_cv = get_cb (callback);
		2184
2048	SvREFCNT_dec (req->callback);	2185	SvREFCNT_dec (req->callback);
2049	req->callback = newSVsv (callback);	2186	req->callback = SvREFCNT_inc (cb_cv);
		2187	}
		2188	}
2050		2189
2051	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2190	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2052		2191
2053	void	2192	void
2054	add (aio_req grp, ...)	2193	add (aio_req grp, ...)
2055	PPCODE:	2194	PPCODE:
2056	{	2195	{
2057	int i;	2196	int i;
2058	aio_req req;
2059
2060	if (main_sig && !block_sig_level)
2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2062		2197
2063	if (grp->int1 == 2)	2198	if (grp->int1 == 2)
2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2199	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2065		2200
2066	for (i = 1; i < items; ++i )	2201	for (i = 1; i < items; ++i )
2067	{	2202	{
		2203	aio_req req;
		2204
2068	if (GIMME_V != G_VOID)	2205	if (GIMME_V != G_VOID)
2069	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2206	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2070		2207
2071	req = SvAIO_REQ (ST (i));	2208	req = SvAIO_REQ (ST (i));
2072		2209
2073	if (req)	2210	if (req)
2074	{	2211	eio_grp_add (grp, req);
2075	++grp->size;
2076	req->grp = grp;
2077
2078	req->grp_prev = 0;
2079	req->grp_next = grp->grp_first;
2080
2081	if (grp->grp_first)
2082	grp->grp_first->grp_prev = req;
2083
2084	grp->grp_first = req;
2085	}
2086	}	2212	}
2087	}	2213	}
2088		2214
2089	void	2215	void
2090	cancel_subs (aio_req_ornot req)	2216	cancel_subs (aio_req_ornot req)
…		…
2099	AV *av;	2225	AV *av;
2100		2226
2101	grp->errorno = errno;	2227	grp->errorno = errno;
2102		2228
2103	av = newAV ();	2229	av = newAV ();
		2230	av_extend (av, items - 1);
2104		2231
2105	for (i = 1; i < items; ++i )	2232	for (i = 1; i < items; ++i )
2106	av_push (av, newSVsv (ST (i)));	2233	av_push (av, newSVsv (ST (i)));
2107		2234
2108	SvREFCNT_dec (grp->sv1);	2235	SvREFCNT_dec (grp->sv1);
…		…
2115	grp->errorno = errorno;	2242	grp->errorno = errorno;
2116		2243
2117	void	2244	void
2118	limit (aio_req grp, int limit)	2245	limit (aio_req grp, int limit)
2119	CODE:	2246	CODE:
2120	grp->int2 = limit;	2247	eio_grp_limit (grp, limit);
2121	aio_grp_feed (grp);
2122		2248
2123	void	2249	void
2124	feed (aio_req grp, SV *callback=&PL_sv_undef)	2250	feed (aio_req grp, SV *callback = &PL_sv_undef)
2125	CODE:	2251	CODE:
2126	{	2252	{
2127	SvREFCNT_dec (grp->sv2);	2253	SvREFCNT_dec (grp->sv2);
2128	grp->sv2 = newSVsv (callback);	2254	grp->sv2 = newSVsv (callback);
		2255	grp->feed = aio_grp_feed;
2129		2256
2130	if (grp->int2 <= 0)	2257	if (grp->int2 <= 0)
2131	grp->int2 = 2;	2258	grp->int2 = 2;
2132		2259
2133	aio_grp_feed (grp);	2260	eio_grp_limit (grp, grp->int2);
2134	}	2261	}
2135		2262

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