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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.100 by root, Fri Jun 1 06:00:40 2007 UTC vs.
Revision 1.253 by root, Tue Feb 20 04:32:59 2018 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		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
		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
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		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
		80
		81	#define EIO_STRUCT_STAT struct _stati64
		82	#define EIO_STRUCT_STATI64
		83
		84	#else
		85
		86	#include <sys/time.h>
		87	#include <sys/select.h>
		88	#include <unistd.h>
23	#include <utime.h>	89	#include <utime.h>
		90	#include <signal.h>
24		91
25	#if HAVE_SENDFILE	92	#define EIO_STRUCT_STAT Stat_t
26	# if __linux	93
		94	#endif
		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_EVENTFD
27	# include <sys/sendfile.h>	112	# include <sys/eventfd.h>
28	# elif __freebsd	113	#endif
		114
		115	#if HAVE_RLIMITS
		116	#include <sys/time.h>
29	# include <sys/socket.h>	117	#include <sys/resource.h>
30	# include <sys/uio.h>	118	#endif
31	# elif __hpux	119
32	# include <sys/socket.h>	120	typedef SV SV8; /* byte-sv, used for argument-checking */
33	# elif __solaris /* not yet */	121	typedef int aio_rfd; /* read file desriptor */
34	# include <sys/sendfile.h>	122	typedef int aio_wfd; /* write file descriptor */
		123
		124	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		125
		126	#define EIO_REQ_MEMBERS \
		127	SV *callback; \
		128	SV *sv1, *sv2; \
		129	SV *sv3, *sv4; \
		130	STRLEN stroffset; \
		131	SV *self;
		132
		133	#define EIO_NO_WRAPPERS 1
		134
		135	#include "libeio/eio.h"
		136
		137	static int req_invoke (eio_req *req);
		138	#define EIO_FINISH(req) req_invoke (req)
		139	static void req_destroy (eio_req *grp);
		140	#define EIO_DESTROY(req) req_destroy (req)
		141
		142	#include "libeio/eio.c"
		143
		144	#if !HAVE_POSIX_FADVISE
		145	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#if !HAVE_POSIX_MADVISE
		149	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		150	#endif
		151
		152	#ifndef MAP_ANONYMOUS
		153	# ifdef MAP_ANON
		154	# define MAP_ANONYMOUS MAP_ANON
35	# else	155	# else
36	# error sendfile support requested but not available	156	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	157	# endif
38	#endif	158	#endif
39		159
40	/* number of seconds after which idle threads exit */	160	/* defines all sorts of constants to 0 unless they are already defined */
41	#define IDLE_TIMEOUT 10	161	/* also provides const_iv_ and const_niv_ macros for them */
		162	#include "def0.h"
42		163
43	/* used for struct dirent, AIX doesn't provide it */	164	#ifndef makedev
44	#ifndef NAME_MAX	165	# define makedev(maj,min) (((maj) << 8) | (min))
45	# define NAME_MAX 4096
46	#endif	166	#endif
		167	#ifndef major
		168	# define major(dev) ((dev) >> 8)
		169	#endif
		170	#ifndef minor
		171	# define minor(dev) ((dev) & 0xff)
		172	#endif
47		173
48	/* buffer size for various temporary buffers */	174	#if PAGESIZE <= 0
49	#define AIO_BUFSIZE 65536	175	# define PAGESIZE sysconf (_SC_PAGESIZE)
		176	#endif
50		177
51	#define dBUF \	178	/*****************************************************************************/
52	char *aio_buf; \	179
53	LOCK (wrklock); \	180	#if !_POSIX_MAPPED_FILES
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	181	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
55	UNLOCK (wrklock); \	182	# define munmap(addr,length) EIO_ENOSYS ()
56	if (!aio_buf) \	183	#endif
		184
		185	#if !_POSIX_MEMORY_PROTECTION
		186	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		187	#endif
		188
		189	#define FOREIGN_MAGIC PERL_MAGIC_ext
		190
		191	static int ecb_cold
		192	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		193	{
		194	int old_errno = errno;
		195	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		196	errno = old_errno;
		197
		198	mg->mg_obj = 0; /* just in case */
		199
		200	SvREADONLY_off (sv);
		201
		202	if (SvPVX (sv) != mg->mg_ptr)
		203	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		204
		205	SvCUR_set (sv, 0);
		206	SvPVX (sv) = 0;
		207	SvOK_off (sv);
		208
57	return -1;	209	return 0;
		210	}
58		211
59	typedef SV SV8; /* byte-sv, used for argument-checking */	212	static MGVTBL mmap_vtbl = {
60		213	0, 0, 0, 0, mmap_free
61	enum {
62	REQ_QUIT,
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	214	};
77		215
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	216	static int ecb_cold
79	#define AIO_GRP_KLASS "IO::AIO::GRP"	217	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
80
81	typedef struct aio_cb
82	{	218	{
83	struct aio_cb *volatile next;	219	free (mg->mg_ptr);
		220	mg->mg_obj = 0; /* just in case */
84		221
85	SV *callback;	222	SvREADONLY_off (sv);
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92		223
93	STRLEN stroffset;	224	if (SvPVX (sv) != mg->mg_ptr)
94	int type;	225	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98		226
99	unsigned char flags;	227	SvCUR_set (sv, 0);
100	unsigned char pri;	228	SvPVX (sv) = 0;
		229	SvOK_off (sv);
101		230
102	SV *self; /* the perl counterpart of this request, if any */	231	return 0;
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	232	}
104	} aio_cb;
105		233
106	enum {	234	static MGVTBL sysfree_vtbl = {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */	235	0, 0, 0, 0, sysfree_free
108	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};	236	};
111		237
112	typedef aio_cb *aio_req;	238	/*****************************************************************************/
113	typedef aio_cb *aio_req_ornot;
114		239
115	enum {	240	/* helper: set scalar to foreign ptr with custom free */
116	PRI_MIN = -4,	241	static void
117	PRI_MAX = 4,	242	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
118
119	DEFAULT_PRI = 0,
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{	243	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	244	sv_force_normal (sv);
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135		245
136	static thread_t main_tid;	246	/* we store the length in mg_obj, as namlen is I32 :/ */
137	static int main_sig;	247	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
138	static int block_sig_level;	248	->mg_obj = (SV *)length;
139		249
140	void block_sig ()	250	SvUPGRADE (sv, SVt_PV); /* nop... */
141	{
142	sigset_t ss;
143		251
144	if (block_sig_level++)	252	if (SvLEN (sv))
		253	Safefree (SvPVX (sv));
		254
		255	SvPVX (sv) = (char *)addr;
		256	SvCUR_set (sv, length);
		257	SvLEN_set (sv, 0);
		258	SvPOK_only (sv);
		259	}
		260
		261	static void
		262	sv_clear_foreign (SV *sv)
		263	{
		264	/* todo: iterate over magic and only free ours, but of course */
		265	/* the perl5porters will call that (correct) behaviour buggy */
		266	sv_unmagic (sv, FOREIGN_MAGIC);
		267	}
		268
		269	/*****************************************************************************/
		270
		271	static void
		272	fiemap (eio_req *req)
		273	{
		274	req->result = -1;
		275
		276	#if HAVE_FIEMAP
		277	/* assume some c99 */
		278	struct fiemap *fiemap = 0;
		279	size_t end_offset;
		280	int count = req->int3;
		281
		282	req->flags |= EIO_FLAG_PTR1_FREE;
		283
		284	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		285	/* increase in 3.5kb steps */
		286	if (count < 0)
		287	count = 8;
		288
		289	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		290	errno = ENOMEM;
		291	if (!fiemap)
145	return;	292	return;
146		293
147	if (!main_sig)	294	req->ptr1 = fiemap;
		295
		296	fiemap->fm_start = req->offs;
		297	fiemap->fm_length = req->size;
		298	fiemap->fm_flags = req->int2;
		299	fiemap->fm_extent_count = count;
		300
		301	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
148	return;	302	return;
149		303
150	sigemptyset (&ss);	304	if (req->int3 >= 0 /* not autosizing */
151	sigaddset (&ss, main_sig);	305	|| !fiemap->fm_mapped_extents /* no more extents */
152	pthread_sigmask (SIG_BLOCK, &ss, 0);	306	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
153	}	307	goto done;
154		308
155	void unblock_sig ()	309	/* else we have to loop -
156	{	310	* it would be tempting (actually I tried that first) to just query the
157	sigset_t ss;	311	* number of extents needed, but linux often feels like not returning all
		312	* extents, without telling us it left any out. this complicates
		313	* this quite a bit.
		314	*/
158		315
159	if (--block_sig_level)	316	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
160	return;
161		317
162	if (!main_sig)	318	for (;;)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{	319	{
195	closedir (wrk->dirp);	320	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
196	wrk->dirp = 0;	321	char scratch[3072];
197	}	322	struct fiemap *incmap = (struct fiemap *)scratch;
198		323
199	if (wrk->dbuf)	324	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
200	{	325	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
201	free (wrk->dbuf);	326	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
202	wrk->dbuf = 0;	327	incmap->fm_flags = fiemap->fm_flags;
203	}	328	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
204	}
205		329
206	static void worker_free (worker *wrk)	330	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;	331	return;
301		332
302	--q->size;	333	if (!incmap->fm_mapped_extents)
		334	goto done;
303		335
304	for (pri = NUM_PRI; pri--; )	336	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
305	{	337	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
306	aio_req req = q->qs[pri];	338	errno = ENOMEM;
307
308	if (req)	339	if (!fiemap)
		340	return;
		341
		342	req->ptr1 = fiemap;
		343
		344	for (count = 0; count < incmap->fm_mapped_extents; ++count)
309	{	345	{
310	if (!(q->qs[pri] = req->next))	346	struct fiemap_extent *e = incmap->fm_extents + count;
311	q->qe[pri] = 0;
312		347
313	return req;	348	if (e->fe_logical + e->fe_length >= end_offset)
		349	goto done;
		350
		351	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		352
		353	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		354	goto done;
		355
314	}	356	}
315	}	357	}
316		358
317	abort ();	359	done:
318	}	360	req->result = 0;
319		361
320	static int poll_cb ();	362	#else
321	static int req_invoke (aio_req req);	363	errno = ENOSYS;
		364	#endif
		365	}
		366
		367	/*****************************************************************************/
		368
		369	enum {
		370	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		371	};
		372
		373	typedef eio_req *aio_req;
		374	typedef eio_req *aio_req_ornot;
		375	typedef eio_wd aio_wd;
		376
		377	static SV *on_next_submit;
		378	static int next_pri = EIO_PRI_DEFAULT;
		379	static int max_outstanding;
		380
		381	static s_epipe respipe;
		382
322	static void req_free (aio_req req);	383	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	384	static void req_cancel (aio_req req);
324		385
		386	static void
		387	want_poll (void)
		388	{
		389	/* write a dummy byte to the pipe so fh becomes ready */
		390	s_epipe_signal (&respipe);
		391	}
		392
		393	static void
		394	done_poll (void)
		395	{
		396	/* read any signals sent by the worker threads */
		397	s_epipe_drain (&respipe);
		398	}
		399
325	/* must be called at most once */	400	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	401	static SV *
		402	req_sv (aio_req req, HV *stash)
327	{	403	{
328	if (!req->self)	404	if (!req->self)
329	{	405	{
330	req->self = (SV *)newHV ();	406	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	407	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	408	}
333		409
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	410	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	411	}
336		412
337	static aio_req SvAIO_REQ (SV *sv)	413	static SV *
		414	newSVaio_wd (aio_wd wd)
		415	{
		416	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		417	}
		418
		419	static aio_req
		420	SvAIO_REQ (SV *sv)
338	{	421	{
339	MAGIC *mg;	422	MAGIC *mg;
340		423
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	424	if (!SvROK (sv)
		425	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		426	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		427	&& SvSTASH (SvRV (sv)) != aio_req_stash
		428	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	429	croak ("object of class IO::AIO::REQ expected");
343		430
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	431	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		432
346	return mg ? (aio_req)mg->mg_ptr : 0;	433	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	434	}
348		435
		436	static aio_wd
		437	SvAIO_WD (SV *sv)
		438	{
		439	if (!SvROK (sv)
		440	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		441	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		442	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		443
		444	return (aio_wd)(long)SvIVX (SvRV (sv));
		445	}
		446
		447	static SV *
		448	newmortalFH (int fd, int flags)
		449	{
		450	if (fd < 0)
		451	return &PL_sv_undef;
		452
		453	GV *gv = (GV *)sv_newmortal ();
		454	char sym[64];
		455	int symlen;
		456
		457	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		458	gv_init (gv, aio_stash, sym, symlen, 0);
		459
		460	symlen = snprintf (
		461	sym,
		462	sizeof (sym),
		463	"%s&=%d",
		464	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		465	fd
		466	);
		467
		468	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		469	? (SV *)gv : &PL_sv_undef;
		470	}
		471
		472	static void
349	static void aio_grp_feed (aio_req grp)	473	aio_grp_feed (aio_req grp)
350	{	474	{
351	block_sig ();	475	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	476	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	477	dSP;
360		478
361	ENTER;	479	ENTER;
362	SAVETMPS;	480	SAVETMPS;
363	PUSHMARK (SP);	481	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	482	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	483	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	484	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	485	SPAGAIN;
368	FREETMPS;	486	FREETMPS;
369	LEAVE;	487	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	488	}
380
381	unblock_sig ();
382	}	489	}
383		490
384	static void aio_grp_dec (aio_req grp)	491	static void
		492	req_submit (eio_req *req)
385	{	493	{
386	--grp->size;	494	eio_submit (req);
387		495
388	/* call feeder, if applicable */	496	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	497	{
394	block_sig ();	498	dSP;
		499	SV *cb = sv_2mortal (on_next_submit);
395		500
396	if (!req_invoke (grp))	501	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		502
403	req_free (grp);	503	PUSHMARK (SP);
404	unblock_sig ();	504	PUTBACK;
		505	call_sv (cb, G_DISCARD | G_EVAL);
405	}	506	}
406	}	507	}
407		508
		509	static int
408	static int req_invoke (aio_req req)	510	req_invoke (eio_req *req)
409	{	511	{
410	dSP;
411
412	if (req->flags & FLAG_SV2_RO_OFF)	512	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv2);	513	SvREADONLY_off (req->sv2);
414		514
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	515	if (!EIO_CANCELLED (req) && req->callback)
416	{	516	{
		517	dSP;
		518	static SV *sv_result_cache; /* caches the result integer SV */
		519	SV *sv_result;
		520
417	ENTER;	521	ENTER;
418	SAVETMPS;	522	SAVETMPS;
419	PUSHMARK (SP);	523	PUSHMARK (SP);
420	EXTEND (SP, 1);	524	EXTEND (SP, 1);
421		525
		526	/* do not recreate the result IV from scratch each time */
		527	if (expect_true (sv_result_cache))
		528	{
		529	sv_result = sv_result_cache; sv_result_cache = 0;
		530	SvIV_set (sv_result, req->result);
		531	SvIOK_only (sv_result);
		532	}
		533	else
		534	{
		535	sv_result = newSViv (req->result);
		536	SvREADONLY_on (sv_result);
		537	}
		538
422	switch (req->type)	539	switch (req->type)
423	{	540	{
		541	case EIO_WD_OPEN:
		542	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		543	break;
		544
424	case REQ_READDIR:	545	case EIO_READDIR:
425	{	546	{
426	SV *rv = &PL_sv_undef;	547	SV *rv = &PL_sv_undef;
427		548
428	if (req->result >= 0)	549	if (req->result >= 0)
429	{	550	{
430	int i;	551	int i;
431	char *buf = req->ptr2;	552	char *names = (char *)req->ptr2;
		553	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	554	AV *av = newAV ();
433		555
434	av_extend (av, req->result - 1);	556	av_extend (av, req->result - 1);
435		557
436	for (i = 0; i < req->result; ++i)	558	for (i = 0; i < req->result; ++i)
437	{	559	{
438	SV *sv = newSVpv (buf, 0);	560	if (req->int1 & EIO_READDIR_DENTS)
		561	{
		562	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		563
		564	if (req->int1 & EIO_READDIR_CUSTOM2)
		565	{
		566	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		567	AV *avent = newAV ();
		568
		569	av_extend (avent, 2);
		570
		571	if (!sv_type [ent->type])
		572	{
		573	sv_type [ent->type] = newSViv (ent->type);
		574	SvREADONLY_on (sv_type [ent->type]);
		575	}
		576
		577	av_store (avent, 0, namesv);
		578	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		579	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		580
		581	av_store (av, i, newRV_noinc ((SV *)avent));
		582	}
		583	else
440	av_store (av, i, sv);	584	av_store (av, i, namesv);
		585
		586	++ent;
		587	}
		588	else
		589	{
		590	SV *name = newSVpv (names, 0);
		591	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	592	names += SvCUR (name) + 1;
		593	}
442	}	594	}
443		595
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	596	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	597	}
446		598
447	PUSHs (rv);	599	PUSHs (rv);
		600
		601	if (req->int1 & EIO_READDIR_CUSTOM1)
		602	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	603	}
449	break;	604	break;
450		605
451	case REQ_OPEN:	606	case EIO_OPEN:
		607	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		608	break;
		609
		610	case EIO_STATVFS:
		611	case EIO_FSTATVFS:
452	{	612	{
453	/* convert fd to fh */	613	SV *rv = &PL_sv_undef;
454	SV *fh;	614
		615	#ifndef _WIN32
		616	if (req->result >= 0)
		617	{
		618	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		619	HV *hv = newHV ();
		620	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		621	* chooses to make it a struct.
		622	*/
		623	unsigned long fsid = 0;
		624	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
455		625
456	PUSHs (sv_2mortal (newSViv (req->result)));	626	rv = sv_2mortal (newRV_noinc ((SV *)hv));
457	PUTBACK;
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
459	SPAGAIN;
460		627
461	fh = POPs;	628	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
462	PUSHMARK (SP);	629	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		630	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		631	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		632	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		633	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		634	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		635	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		636	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		637	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		638	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		639	}
		640	#endif
		641
463	XPUSHs (fh);	642	PUSHs (rv);
464	}	643	}
		644
465	break;	645	break;
466		646
467	case REQ_GROUP:	647	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	648	req->int1 = 2; /* mark group as finished */
469		649
470	if (req->sv1)	650	if (req->sv1)
471	{	651	{
472	int i;	652	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	656	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	657	PUSHs (*av_fetch (av, i, 0));
478	}	658	}
479	break;	659	break;
480		660
481	case REQ_NOP:	661	case EIO_NOP:
482	case REQ_BUSY:	662	case EIO_BUSY:
483	break;	663	break;
484		664
485	case REQ_READLINK:	665	case EIO_READLINK:
		666	case EIO_REALPATH:
486	if (req->result > 0)	667	if (req->result > 0)
		668	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		669	break;
		670
		671	case EIO_STAT:
		672	case EIO_LSTAT:
		673	case EIO_FSTAT:
		674	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		675
		676	if (!(PL_laststatval = req->result))
		677	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		678	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		679
		680	PUSHs (sv_result);
		681	break;
		682
		683	case EIO_SEEK:
		684	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		685	break;
		686
		687	case EIO_READ:
		688	{
		689	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		690	*SvEND (req->sv2) = 0;
		691	SvPOK_only (req->sv2);
		692	SvSETMAGIC (req->sv2);
		693	PUSHs (sv_result);
		694	}
		695	break;
		696
		697	case EIO_SLURP:
		698	{
		699	if (req->result >= 0)
		700	{
		701	/* if length was originally not known, we steal the malloc'ed memory */
		702	if (req->flags & EIO_FLAG_PTR2_FREE)
		703	{
		704	req->flags &= ~EIO_FLAG_PTR2_FREE;
		705	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		706	}
		707	else
		708	{
		709	SvCUR_set (req->sv2, req->result);
		710	*SvEND (req->sv2) = 0;
		711	SvPOK_only (req->sv2);
		712	}
		713
		714	SvSETMAGIC (req->sv2);
		715	}
		716
		717	PUSHs (sv_result);
		718	}
		719	break;
		720
		721	case EIO_CUSTOM:
		722	if (req->feed == fiemap)
487	{	723	{
488	SvCUR_set (req->sv2, req->result);	724	#if HAVE_FIEMAP
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);	725	if (!req->result)
		726	{
		727	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		728
		729	if (fiemap->fm_extent_count)
		730	{
		731	AV *av = newAV ();
		732	int i;
		733
		734	while (fiemap->fm_mapped_extents)
		735	{
		736	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		737	AV *ext_av = newAV ();
		738
		739	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		740	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		741	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		742	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		743
		744	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		745	}
		746
		747	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		748	}
		749	else
		750	{
		751	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		752	PUSHs (sv_result);
		753	}
		754	}
		755	#endif
491	}	756	}
		757	else
		758	PUSHs (sv_result);
492	break;	759	break;
493		760
494	case REQ_STAT:	761	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
495	case REQ_LSTAT:	762	if (req->result > 0)
496	case REQ_FSTAT:	763	SvIV_set (sv_result, 0);
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	764	/* FALLTHROUGH */
498	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));
501	break;
502
503	case REQ_READ:
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));
507	break;
508		765
509	default:	766	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	767	PUSHs (sv_result);
511	break;	768	break;
512	}	769	}
513		770
514	errno = req->errorno;	771	errno = req->errorno;
515		772
516	PUTBACK;	773	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	774	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	775	SPAGAIN;
		776
		777	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		778	SvREFCNT_dec (sv_result);
		779	else
		780	sv_result_cache = sv_result;
519		781
520	FREETMPS;	782	FREETMPS;
521	LEAVE;	783	LEAVE;
		784
		785	PUTBACK;
522	}	786	}
523		787
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	788	return !!SvTRUE (ERRSV);
539	}	789	}
540		790
541	static void req_free (aio_req req)	791	static void
		792	req_destroy (aio_req req)
542	{	793	{
543	if (req->self)	794	if (req->self)
544	{	795	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	796	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	797	SvREFCNT_dec (req->self);
547	}	798	}
548		799
549	SvREFCNT_dec (req->sv1);	800	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	801	SvREFCNT_dec (req->sv2);
		802	SvREFCNT_dec (req->sv3);
		803	SvREFCNT_dec (req->sv4);
551	SvREFCNT_dec (req->callback);	804	SvREFCNT_dec (req->callback);
552		805
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	806	free (req);
557	}	807	}
558		808
		809	static void
559	static void req_cancel_subs (aio_req grp)	810	req_cancel_subs (aio_req grp)
560	{	811	{
561	aio_req sub;
562
563	if (grp->type != REQ_GROUP)	812	if (grp->type != EIO_GROUP)
564	return;	813	return;
565		814
566	SvREFCNT_dec (grp->sv2);	815	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	816	grp->sv2 = 0;
568		817
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	818	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	819	}
572		820
573	static void req_cancel (aio_req req)	821	static void ecb_cold
		822	create_respipe (void)
574	{	823	{
575	req->flags |= FLAG_CANCELLED;	824	if (s_epipe_renew (&respipe))
576		825	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	826	}
579		827
580	static void *aio_proc(void *arg);	828	static void
581		829	poll_wait (void)
582	static void start_thread (void)
583	{	830	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()
676	{
677	fd_set rfd;
678
679	while (nreqs)	831	while (eio_nreqs ())
680	{	832	{
681	int size;	833	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	834
		835	X_LOCK (EIO_POOL->reslock);
683	size = res_queue.size;	836	size = EIO_POOL->res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	837	X_UNLOCK (EIO_POOL->reslock);
685		838
686	if (size)	839	if (size)
687	return;	840	return;
688		841
689	maybe_start_thread ();	842	etp_maybe_start_thread (EIO_POOL);
690		843
691	FD_ZERO(&rfd);	844	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	845	}
696	}	846	}
697		847
698	static int poll_cb ()	848	static int
		849	poll_cb (void)
699	{	850	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	851	for (;;)
713	{	852	{
714	for (;;)	853	int res = eio_poll ();
		854
		855	if (res > 0)
		856	croak (0);
		857
		858	if (!max_outstanding || max_outstanding > eio_nreqs ())
		859	return res;
		860
		861	poll_wait ();
		862	}
		863	}
		864
		865	static void ecb_cold
		866	reinit (void)
		867	{
		868	create_respipe ();
		869
		870	if (eio_init (want_poll, done_poll) < 0)
		871	croak ("IO::AIO: unable to initialise eio library");
		872	}
		873
		874	/*****************************************************************************/
		875
		876	static SV *
		877	get_cb (SV *cb_sv)
		878	{
		879	SvGETMAGIC (cb_sv);
		880	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		881	}
		882
		883	static aio_req ecb_noinline
		884	dreq (SV *callback)
		885	{
		886	SV *cb_cv;
		887	aio_req req;
		888	int req_pri = next_pri;
		889	next_pri = EIO_PRI_DEFAULT;
		890
		891	cb_cv = get_cb (callback);
		892
		893	req = calloc (sizeof (*req), 1);
		894	if (!req)
		895	croak ("out of memory during eio_req allocation");
		896
		897	req->callback = SvREFCNT_inc (cb_cv);
		898	req->pri = req_pri;
		899
		900	return req;
		901	}
		902
		903	#define dREQ \
		904	aio_req req = dreq (callback); \
		905
		906	#define REQ_SEND \
		907	PUTBACK; \
		908	req_submit (req); \
		909	SPAGAIN; \
		910	\
		911	if (GIMME_V != G_VOID) \
		912	XPUSHs (req_sv (req, aio_req_stash));
		913
		914	ecb_inline void
		915	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		916	{
		917	if (expect_false (SvROK (path)))
		918	{
		919	SV *rv = SvRV (path);
		920	SV *wdob;
		921
		922	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715	{	923	{
716	maybe_start_thread ();	924	path = AvARRAY (rv)[1];
		925	wdob = AvARRAY (rv)[0];
717		926
718	LOCK (reslock);	927	if (SvOK (wdob))
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{	928	{
723	--npending;	929	*wd = SvAIO_WD (wdob);
724		930	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}	931	}
746	else	932	else
747	{	933	*wd = EIO_INVALID_WD;
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);
753	}
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}	934	}
		935	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		936	{
		937	*wd = (aio_wd)(long)SvIVX (rv);
		938	*wdsv = SvREFCNT_inc_NN (rv);
		939	*ptr = ".";
		940	return; /* path set to "." */
		941	}
		942	else
		943	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		944	}
771		945
772	if (nreqs <= max_outstanding)	946	*pathsv = newSVsv (path);
		947	*ptr = SvPVbyte_nolen (*pathsv);
		948	}
		949
		950	static void ecb_noinline
		951	req_set_path1 (aio_req req, SV *path)
		952	{
		953	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		954	}
		955
		956	static void ecb_noinline
		957	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		958	{
		959	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		960
		961	switch (SvTYPE (rv))
		962	{
		963	case SVt_PVIO:
		964	case SVt_PVLV:
		965	case SVt_PVGV:
		966	req->type = type_fh;
		967	req->sv1 = newSVsv (fh_or_path);
		968	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773	break;	969	break;
774		970
775	poll_wait ();	971	default:
776		972	req->type = type_path;
777	++maxreqs;	973	req_set_path1 (req, fh_or_path);
		974	break;
778	}	975	}
779
780	unblock_sig ();
781	return count;
782	}	976	}
783		977
784	static void create_pipe ()	978	XS(boot_IO__AIO) ecb_cold;
785	{
786	if (pipe (respipe))
787	croak ("unable to initialize result pipe");
788		979
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}
795
796	/*****************************************************************************/
797	/* work around various missing functions */
798
799	#if !HAVE_PREADWRITE
800	# define pread aio_pread
801	# define pwrite aio_pwrite
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}
824
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974
975	if (res < 0
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
977	#if __solaris
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
979	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985
986	res = 0;
987
988	while (count)
989	{
990	ssize_t cnt;
991
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
993
994	if (cnt <= 0)
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999
1000	cnt = write (ofd, aio_buf, cnt);
1001
1002	if (cnt <= 0)
1003	{
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007
1008	offset += cnt;
1009	res += cnt;
1010	count -= cnt;
1011	}
1012	}
1013
1014	return res;
1015	}
1016
1017	/* read a full directory */
1018	static void scandir_ (aio_req req, worker *self)
1019	{
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078
1079	/*****************************************************************************/
1080
1081	static void *aio_proc (void *thr_arg)
1082	{
1083	aio_req req;
1084	struct timespec ts;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}
1303
1304	#define dREQ \
1305	aio_req req; \
1306	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \
1308	\
1309	if (SvOK (callback) && !SvROK (callback)) \
1310	croak ("callback must be undef or of reference type"); \
1311	\
1312	Newz (0, req, 1, aio_cb); \
1313	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \
1315	\
1316	req->callback = newSVsv (callback); \
1317	req->pri = req_pri
1318
1319	#define REQ_SEND \
1320	req_send (req); \
1321	\
1322	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1324
1325	MODULE = IO::AIO PACKAGE = IO::AIO	980	MODULE = IO::AIO PACKAGE = IO::AIO
1326		981
1327	PROTOTYPES: ENABLE	982	PROTOTYPES: ENABLE
1328		983
1329	BOOT:	984	BOOT:
1330	{	985	{
		986	static const struct {
		987	const char *name;
		988	IV iv;
		989	} *civ, const_iv[] = {
		990	# define const_niv(name, value) { # name, (IV) value },
		991	# define const_iv(name) { # name, (IV) name },
		992	# define const_eio(name) { # name, (IV) EIO_ ## name },
		993
		994	/* you have to re-run ./gendef0 after adding/removing any constants here */
		995	/* the first block can be undef if missing */
		996	const_iv (ENOSYS)
		997	const_iv (EXDEV)
		998	const_iv (EBADR)
		999
		1000	/* for lseek */
		1001	const_iv (SEEK_DATA)
		1002	const_iv (SEEK_HOLE)
		1003
		1004	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1005	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1006	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1007	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1008	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1009	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1010
		1011	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1012	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1013	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1014	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1015	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1016
		1017	/* the second block will be 0 when missing */
		1018	const_iv (O_RDONLY)
		1019	const_iv (O_WRONLY)
		1020	const_iv (O_RDWR)
		1021	const_iv (O_CREAT)
		1022	const_iv (O_TRUNC)
		1023	const_iv (O_EXCL)
		1024	const_iv (O_APPEND)
		1025
		1026	const_iv (O_ASYNC)
		1027	const_iv (O_DIRECT)
		1028	const_iv (O_NOATIME)
		1029
		1030	const_iv (O_CLOEXEC)
		1031	const_iv (O_NOCTTY)
		1032	const_iv (O_NOFOLLOW)
		1033	const_iv (O_NONBLOCK)
		1034	const_iv (O_EXEC)
		1035	const_iv (O_SEARCH)
		1036	const_iv (O_DIRECTORY)
		1037	const_iv (O_DSYNC)
		1038	const_iv (O_RSYNC)
		1039	const_iv (O_SYNC)
		1040	const_iv (O_PATH)
		1041	const_iv (O_TMPFILE)
		1042	const_iv (O_TTY_INIT)
		1043
		1044	const_iv (S_IFIFO)
		1045	const_iv (S_IFCHR)
		1046	const_iv (S_IFBLK)
		1047	const_iv (S_IFLNK)
		1048	const_iv (S_IFREG)
		1049	const_iv (S_IFDIR)
		1050	const_iv (S_IFWHT)
		1051	const_iv (S_IFSOCK)
		1052	const_iv (S_IFMT)
		1053
		1054	const_iv (ST_RDONLY)
		1055	const_iv (ST_NOSUID)
		1056	const_iv (ST_NODEV)
		1057	const_iv (ST_NOEXEC)
		1058	const_iv (ST_SYNCHRONOUS)
		1059	const_iv (ST_MANDLOCK)
		1060	const_iv (ST_WRITE)
		1061	const_iv (ST_APPEND)
		1062	const_iv (ST_IMMUTABLE)
		1063	const_iv (ST_NOATIME)
		1064	const_iv (ST_NODIRATIME)
		1065	const_iv (ST_RELATIME)
		1066
		1067	const_iv (PROT_NONE)
		1068	const_iv (PROT_EXEC)
		1069	const_iv (PROT_READ)
		1070	const_iv (PROT_WRITE)
		1071
		1072	const_iv (MAP_PRIVATE)
		1073	const_iv (MAP_SHARED)
		1074	const_iv (MAP_FIXED)
		1075	const_iv (MAP_ANONYMOUS)
		1076
		1077	/* linuxish */
		1078	const_iv (MAP_LOCKED)
		1079	const_iv (MAP_NORESERVE)
		1080	const_iv (MAP_POPULATE)
		1081	const_iv (MAP_NONBLOCK)
		1082	const_iv (MAP_GROWSDOWN)
		1083	const_iv (MAP_32BIT)
		1084	const_iv (MAP_HUGETLB)
		1085	const_iv (MAP_STACK)
		1086
		1087	const_iv (F_DUPFD_CLOEXEC)
		1088
		1089	const_iv (F_OFD_GETLK)
		1090	const_iv (F_OFD_SETLK)
		1091	const_iv (F_OFD_GETLKW)
		1092
		1093	const_iv (FIFREEZE)
		1094	const_iv (FITHAW)
		1095	const_iv (FITRIM)
		1096	const_iv (FICLONE)
		1097	const_iv (FICLONERANGE)
		1098	const_iv (FIDEDUPERANGE)
		1099
		1100	const_iv (FS_IOC_GETFLAGS)
		1101	const_iv (FS_IOC_SETFLAGS)
		1102	const_iv (FS_IOC_GETVERSION)
		1103	const_iv (FS_IOC_SETVERSION)
		1104	const_iv (FS_IOC_FIEMAP)
		1105	const_iv (FS_IOC_FSGETXATTR)
		1106	const_iv (FS_IOC_FSSETXATTR)
		1107	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1108	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1109	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1110
		1111	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1112
		1113	const_iv (FS_SECRM_FL)
		1114	const_iv (FS_UNRM_FL)
		1115	const_iv (FS_COMPR_FL)
		1116	const_iv (FS_SYNC_FL)
		1117	const_iv (FS_IMMUTABLE_FL)
		1118	const_iv (FS_APPEND_FL)
		1119	const_iv (FS_NODUMP_FL)
		1120	const_iv (FS_NOATIME_FL)
		1121	const_iv (FS_DIRTY_FL)
		1122	const_iv (FS_COMPRBLK_FL)
		1123	const_iv (FS_NOCOMP_FL)
		1124	const_iv (FS_ENCRYPT_FL)
		1125	const_iv (FS_BTREE_FL)
		1126	const_iv (FS_INDEX_FL)
		1127	const_iv (FS_JOURNAL_DATA_FL)
		1128	const_iv (FS_NOTAIL_FL)
		1129	const_iv (FS_DIRSYNC_FL)
		1130	const_iv (FS_TOPDIR_FL)
		1131	const_iv (FS_FL_USER_MODIFIABLE)
		1132
		1133	const_iv (FS_XFLAG_REALTIME)
		1134	const_iv (FS_XFLAG_PREALLOC)
		1135	const_iv (FS_XFLAG_IMMUTABLE)
		1136	const_iv (FS_XFLAG_APPEND)
		1137	const_iv (FS_XFLAG_SYNC)
		1138	const_iv (FS_XFLAG_NOATIME)
		1139	const_iv (FS_XFLAG_NODUMP)
		1140	const_iv (FS_XFLAG_RTINHERIT)
		1141	const_iv (FS_XFLAG_PROJINHERIT)
		1142	const_iv (FS_XFLAG_NOSYMLINKS)
		1143	const_iv (FS_XFLAG_EXTSIZE)
		1144	const_iv (FS_XFLAG_EXTSZINHERIT)
		1145	const_iv (FS_XFLAG_NODEFRAG)
		1146	const_iv (FS_XFLAG_FILESTREAM)
		1147	const_iv (FS_XFLAG_DAX)
		1148	const_iv (FS_XFLAG_HASATTR)
		1149
		1150	const_iv (FIEMAP_FLAG_SYNC)
		1151	const_iv (FIEMAP_FLAG_XATTR)
		1152	const_iv (FIEMAP_FLAGS_COMPAT)
		1153	const_iv (FIEMAP_EXTENT_LAST)
		1154	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1155	const_iv (FIEMAP_EXTENT_DELALLOC)
		1156	const_iv (FIEMAP_EXTENT_ENCODED)
		1157	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1158	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1159	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1160	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1161	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1162	const_iv (FIEMAP_EXTENT_MERGED)
		1163	const_iv (FIEMAP_EXTENT_SHARED)
		1164
		1165	const_iv (SPLICE_F_MOVE)
		1166	const_iv (SPLICE_F_NONBLOCK)
		1167	const_iv (SPLICE_F_MORE)
		1168	const_iv (SPLICE_F_GIFT)
		1169
		1170	const_iv (EFD_CLOEXEC)
		1171	const_iv (EFD_NONBLOCK)
		1172	const_iv (EFD_SEMAPHORE)
		1173
		1174	/* these are libeio constants, and are independent of gendef0 */
		1175	const_eio (SEEK_SET)
		1176	const_eio (SEEK_CUR)
		1177	const_eio (SEEK_END)
		1178
		1179	const_eio (MCL_FUTURE)
		1180	const_eio (MCL_CURRENT)
		1181
		1182	const_eio (MS_ASYNC)
		1183	const_eio (MS_INVALIDATE)
		1184	const_eio (MS_SYNC)
		1185
		1186	const_eio (MT_MODIFY)
		1187
		1188	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1189	const_eio (SYNC_FILE_RANGE_WRITE)
		1190	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1191
		1192	const_eio (FALLOC_FL_KEEP_SIZE)
		1193	const_eio (FALLOC_FL_PUNCH_HOLE)
		1194	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1195	const_eio (FALLOC_FL_ZERO_RANGE)
		1196	const_eio (FALLOC_FL_INSERT_RANGE)
		1197	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1198
		1199	const_eio (RENAME_NOREPLACE)
		1200	const_eio (RENAME_EXCHANGE)
		1201	const_eio (RENAME_WHITEOUT)
		1202
		1203	const_eio (READDIR_DENTS)
		1204	const_eio (READDIR_DIRS_FIRST)
		1205	const_eio (READDIR_STAT_ORDER)
		1206	const_eio (READDIR_FOUND_UNKNOWN)
		1207
		1208	const_eio (DT_UNKNOWN)
		1209	const_eio (DT_FIFO)
		1210	const_eio (DT_CHR)
		1211	const_eio (DT_DIR)
		1212	const_eio (DT_BLK)
		1213	const_eio (DT_REG)
		1214	const_eio (DT_LNK)
		1215	const_eio (DT_SOCK)
		1216	const_eio (DT_WHT)
		1217	};
		1218
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	1219	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1220	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1221	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1222	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1332		1223
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1224	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1225	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		1226
1341	create_pipe ();	1227	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1343	}
1344		1228
		1229	reinit ();
		1230	}
		1231
1345	void	1232	void
		1233	reinit ()
		1234	PROTOTYPE:
		1235
		1236	void
1346	max_poll_reqs (int nreqs)	1237	max_poll_reqs (unsigned int nreqs)
1347	PROTOTYPE: $	1238	PROTOTYPE: $
1348	CODE:	1239	CODE:
1349	max_poll_reqs = nreqs;	1240	eio_set_max_poll_reqs (nreqs);
1350		1241
1351	void	1242	void
1352	max_poll_time (double nseconds)	1243	max_poll_time (double nseconds)
1353	PROTOTYPE: $	1244	PROTOTYPE: $
1354	CODE:	1245	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	1246	eio_set_max_poll_time (nseconds);
1356		1247
1357	void	1248	void
1358	min_parallel (int nthreads)	1249	min_parallel (unsigned int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_parallel (int nthreads)
1363	PROTOTYPE: $
1364
1365	void
1366	max_idle (int nthreads)
1367	PROTOTYPE: $	1250	PROTOTYPE: $
1368	CODE:	1251	CODE:
1369	set_max_idle (nthreads);	1252	eio_set_min_parallel (nthreads);
1370		1253
1371	int	1254	void
1372	max_outstanding (int maxreqs)	1255	max_parallel (unsigned int nthreads)
1373	PROTOTYPE: $	1256	PROTOTYPE: $
1374	CODE:	1257	CODE:
1375	RETVAL = max_outstanding;	1258	eio_set_max_parallel (nthreads);
		1259
		1260	void
		1261	max_idle (unsigned int nthreads)
		1262	PROTOTYPE: $
		1263	CODE:
		1264	eio_set_max_idle (nthreads);
		1265
		1266	void
		1267	idle_timeout (unsigned int seconds)
		1268	PROTOTYPE: $
		1269	CODE:
		1270	eio_set_idle_timeout (seconds);
		1271
		1272	void
		1273	max_outstanding (unsigned int maxreqs)
		1274	PROTOTYPE: $
		1275	CODE:
1376	max_outstanding = maxreqs;	1276	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		1277
1380	void	1278	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1279	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1382	PROTOTYPE: $$$;$
1383	PPCODE:	1280	PPCODE:
1384	{	1281	{
1385	dREQ;	1282	dREQ;
1386		1283
		1284	req->type = EIO_WD_OPEN;
		1285	req_set_path1 (req, pathname);
		1286
		1287	REQ_SEND;
		1288	}
		1289
		1290	void
		1291	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1292	PPCODE:
		1293	{
		1294	dREQ;
		1295
1387	req->type = REQ_OPEN;	1296	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	1297	req_set_path1 (req, pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	1298	req->int1 = flags;
1391	req->mode = mode;	1299	req->int2 = mode;
1392		1300
1393	REQ_SEND;	1301	REQ_SEND;
1394	}	1302	}
1395		1303
1396	void	1304	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1305	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1398	PROTOTYPE: $;$
1399	ALIAS:	1306	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	1307	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	1308	aio_fdatasync = EIO_FDATASYNC
		1309	aio_syncfs = EIO_SYNCFS
1403	PPCODE:	1310	PPCODE:
1404	{	1311	{
		1312	int fd = s_fileno_croak (fh, 0);
1405	dREQ;	1313	dREQ;
1406		1314
1407	req->type = ix;	1315	req->type = ix;
1408	req->sv1 = newSVsv (fh);	1316	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1317	req->int1 = fd;
1410		1318
1411	REQ_SEND (req);	1319	REQ_SEND;
1412	}	1320	}
1413		1321
1414	void	1322	void
		1323	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	int fd = s_fileno_croak (fh, 0);
		1327	dREQ;
		1328
		1329	req->type = EIO_SYNC_FILE_RANGE;
		1330	req->sv1 = newSVsv (fh);
		1331	req->int1 = fd;
		1332	req->offs = offset;
		1333	req->size = nbytes;
		1334	req->int2 = flags;
		1335
		1336	REQ_SEND;
		1337	}
		1338
		1339	void
		1340	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1341	PPCODE:
		1342	{
		1343	int fd = s_fileno_croak (fh, 0);
		1344	dREQ;
		1345
		1346	req->type = EIO_FALLOCATE;
		1347	req->sv1 = newSVsv (fh);
		1348	req->int1 = fd;
		1349	req->int2 = mode;
		1350	req->offs = offset;
		1351	req->size = len;
		1352
		1353	REQ_SEND;
		1354	}
		1355
		1356	void
		1357	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1358	PPCODE:
		1359	{
		1360	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1361	int fd = s_fileno_croak (fh, 0);
		1362	dREQ;
		1363
		1364	if (expect_false (close_fd < 0))
		1365	{
		1366	int pipefd [2];
		1367
		1368	if (
		1369	#ifdef _WIN32
		1370	_pipe (pipefd, 1, _O_BINARY) < 0
		1371	#else
		1372	pipe (pipefd) < 0
		1373	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1374	#endif
		1375	|| close (pipefd [1]) < 0
		1376	)
		1377	abort (); /*D*/
		1378
		1379	close_fd = pipefd [0];
		1380	}
		1381
		1382	req->type = EIO_DUP2;
		1383	req->int1 = close_fd;
		1384	req->sv2 = newSVsv (fh);
		1385	req->int2 = fd;
		1386
		1387	REQ_SEND;
		1388	}
		1389
		1390	void
		1391	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1392	PPCODE:
		1393	{
		1394	int fd = s_fileno_croak (fh, 0);
		1395	dREQ;
		1396
		1397	req->type = EIO_SEEK;
		1398	req->sv1 = newSVsv (fh);
		1399	req->int1 = fd;
		1400	req->offs = SvVAL64 (offset);
		1401	req->int2 = whence;
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	1407	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1416	ALIAS:	1408	ALIAS:
1417	aio_read = REQ_READ	1409	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	1410	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$
1420	PPCODE:	1411	PPCODE:
1421	{	1412	{
1422	STRLEN svlen;	1413	STRLEN svlen;
		1414	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	1415	char *svptr = SvPVbyte (data, svlen);
1424		1416	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		1417
1428	if (dataoffset < 0)	1418	if (dataoffset < 0)
1429	dataoffset += svlen;	1419	dataoffset += svlen;
1430		1420
1431	if (dataoffset < 0 || dataoffset > svlen)	1421	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	1422	croak ("dataoffset outside of data scalar");
1433		1423
1434	if (ix == REQ_WRITE)	1424	if (ix == EIO_WRITE)
1435	{	1425	{
1436	/* write: check length and adjust. */	1426	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	1427	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	1428	len = svlen - dataoffset;
1439	}	1429	}
1440	else	1430	else
1441	{	1431	{
1442	/* read: grow scalar as necessary */	1432	/* read: check type and grow scalar as necessary */
		1433	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1443	svptr = SvGROW (data, length + dataoffset + 1);	1434	svptr = sv_grow (data, len + dataoffset + 1);
		1435	else if (SvCUR (data) < len + dataoffset)
		1436	croak ("length + dataoffset outside of scalar, and cannot grow");
1444	}	1437	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		1438
1449	{	1439	{
1450	dREQ;	1440	dREQ;
1451		1441
1452	req->type = ix;	1442	req->type = ix;
1453	req->sv1 = newSVsv (fh);	1443	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1444	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	1445	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	1446	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	1447	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	1448	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	1449	req->stroffset = dataoffset;
1461		1450
1462	if (!SvREADONLY (data))	1451	if (!SvREADONLY (data))
1463	{	1452	{
1464	SvREADONLY_on (data);	1453	SvREADONLY_on (data);
…		…
1468	REQ_SEND;	1457	REQ_SEND;
1469	}	1458	}
1470	}	1459	}
1471		1460
1472	void	1461	void
1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1462	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1474	PROTOTYPE: $$;$	1463	ALIAS:
		1464	aio_ioctl = EIO_IOCTL
		1465	aio_fcntl = EIO_FCNTL
1475	PPCODE:	1466	PPCODE:
1476	{	1467	{
1477	SV *data;	1468	int fd = s_fileno_croak (fh, 0);
		1469	char *svptr;
		1470
		1471	if (SvPOK (arg) || !SvNIOK (arg))
		1472	{
		1473	STRLEN svlen;
		1474	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1475	#ifdef IOCPARM_LEN
		1476	STRLEN need = IOCPARM_LEN (request);
		1477	#else
		1478	STRLEN need = 256;
		1479	#endif
		1480
		1481	if (svlen < need)
		1482	svptr = SvGROW (arg, need);
		1483	}
		1484	else
		1485	svptr = (char *)SvIV (arg);
		1486
		1487	{
		1488	dREQ;
		1489
		1490	req->type = ix;
		1491	req->sv1 = newSVsv (fh);
		1492	req->int1 = fd;
		1493	req->int2 = (long)request;
		1494	req->sv2 = SvREFCNT_inc (arg);
		1495	req->ptr2 = svptr;
		1496
		1497	REQ_SEND;
		1498	}
		1499	}
		1500
		1501	void
		1502	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1503	ALIAS:
		1504	aio_readlink = EIO_READLINK
		1505	aio_realpath = EIO_REALPATH
		1506	PPCODE:
		1507	{
1478	dREQ;	1508	dREQ;
1479		1509
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	1510	req->type = ix;
1484	req->sv1 = newSVsv (path);	1511	req_set_path1 (req, pathname);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		1512
1489	REQ_SEND;	1513	REQ_SEND;
1490	}	1514	}
1491		1515
1492	void	1516	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	1517	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1494	PROTOTYPE: $$$$;$
1495	PPCODE:	1518	PPCODE:
1496	{	1519	{
		1520	int ifd = s_fileno_croak (in_fh , 0);
		1521	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	1522	dREQ;
1498		1523
1499	req->type = REQ_SENDFILE;	1524	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	1525	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1526	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	1527	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1528	req->int2 = ifd;
1504	req->offs = in_offset;	1529	req->offs = in_offset;
1505	req->size = length;	1530	req->size = length;
1506		1531
1507	REQ_SEND;	1532	REQ_SEND;
1508	}	1533	}
1509		1534
1510	void	1535	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	1536	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1512	PROTOTYPE: $$$;$
1513	PPCODE:	1537	PPCODE:
1514	{	1538	{
		1539	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	1540	dREQ;
1516		1541
1517	req->type = REQ_READAHEAD;	1542	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	1543	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1544	req->int1 = fd;
1520	req->offs = offset;	1545	req->offs = offset;
1521	req->size = length;	1546	req->size = length;
1522		1547
1523	REQ_SEND;	1548	REQ_SEND;
1524	}	1549	}
1525		1550
1526	void	1551	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1552	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1528	ALIAS:	1553	ALIAS:
1529	aio_stat = REQ_STAT	1554	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1555	aio_lstat = EIO_LSTAT
		1556	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1557	PPCODE:
1532	{	1558	{
1533	dREQ;	1559	dREQ;
1534		1560
1535	req->ptr2 = malloc (sizeof (Stat_t));	1561	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);
1544
1545	if (SvPOK (fh_or_path))
1546	{
1547	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}
1550	else
1551	{
1552	req->type = REQ_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}
1555		1562
1556	REQ_SEND;	1563	REQ_SEND;
1557	}	1564	}
1558		1565
		1566	UV
		1567	major (UV dev)
		1568	ALIAS:
		1569	minor = 1
		1570	CODE:
		1571	RETVAL = ix ? minor (dev) : major (dev);
		1572	OUTPUT:
		1573	RETVAL
		1574
		1575	UV
		1576	makedev (UV maj, UV min)
		1577	CODE:
		1578	RETVAL = makedev (maj, min);
		1579	OUTPUT:
		1580	RETVAL
		1581
1559	void	1582	void
1560	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1583	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1561	PPCODE:	1584	PPCODE:
1562	{	1585	{
1563	dREQ;	1586	dREQ;
1564		1587
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1588	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1589	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1590	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1568
1569	if (SvPOK (fh_or_path))
1570	{
1571	req->type = REQ_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}
1574	else
1575	{
1576	req->type = REQ_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}
1579		1591
1580	REQ_SEND;	1592	REQ_SEND;
1581	}	1593	}
1582		1594
1583	void	1595	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1596	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1585	PPCODE:	1597	PPCODE:
1586	{	1598	{
1587	dREQ;	1599	dREQ;
1588		1600
1589	req->mode = mode;	1601	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1590	req->sv1 = newSVsv (fh_or_path);	1602	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1591
1592	if (SvPOK (fh_or_path))
1593	{
1594	req->type = REQ_CHMOD;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}
1597	else
1598	{
1599	req->type = REQ_FCHMOD;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}
1602		1603
1603	REQ_SEND;	1604	REQ_SEND;
1604	}	1605	}
1605		1606
1606	void	1607	void
		1608	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1609	PPCODE:
		1610	{
		1611	dREQ;
		1612
		1613	req->int2 = mode;
		1614	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1615
		1616	REQ_SEND;
		1617	}
		1618
		1619	void
1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1620	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1608	PPCODE:	1621	PPCODE:
1609	{	1622	{
1610	dREQ;	1623	dREQ;
1611		1624
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1625	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1626	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1627	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1615
1616	if (SvPOK (fh_or_path))
1617	{
1618	req->type = REQ_CHOWN;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}
1621	else
1622	{
1623	req->type = REQ_FCHOWN;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}
1626		1628
1627	REQ_SEND;	1629	REQ_SEND;
1628	}	1630	}
1629		1631
1630	void	1632	void
		1633	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1634	PPCODE:
		1635	{
		1636	dREQ;
		1637
		1638	req->type = EIO_READDIR;
		1639	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1640
		1641	if (flags & EIO_READDIR_DENTS)
		1642	req->int1 |= EIO_READDIR_CUSTOM2;
		1643
		1644	req_set_path1 (req, pathname);
		1645
		1646	REQ_SEND;
		1647	}
		1648
		1649	void
		1650	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1651	PPCODE:
		1652	{
		1653	dREQ;
		1654
		1655	req->type = EIO_MKDIR;
		1656	req->int2 = mode;
		1657	req_set_path1 (req, pathname);
		1658
		1659	REQ_SEND;
		1660	}
		1661
		1662	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1663	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1632	ALIAS:	1664	ALIAS:
1633	aio_unlink = REQ_UNLINK	1665	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1666	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1667	aio_readdir = EIO_READDIR
1636	PPCODE:	1668	PPCODE:
1637	{	1669	{
1638	dREQ;	1670	dREQ;
1639		1671
1640	req->type = ix;	1672	req->type = ix;
1641	req->sv1 = newSVsv (pathname);	1673	req_set_path1 (req, pathname);
1642	req->ptr1 = SvPVbyte_nolen (req->sv1);
1643		1674
1644	REQ_SEND;	1675	REQ_SEND;
1645	}	1676	}
1646		1677
1647	void	1678	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1679	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1680	ALIAS:
		1681	aio_link = EIO_LINK
		1682	aio_symlink = EIO_SYMLINK
		1683	aio_rename = EIO_RENAME
1649	PPCODE:	1684	PPCODE:
1650	{	1685	{
1651	dREQ;	1686	eio_wd wd2 = 0;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:
1664	aio_link = REQ_LINK
1665	aio_symlink = REQ_SYMLINK
1666	aio_rename = REQ_RENAME
1667	PPCODE:
1668	{
1669	dREQ;	1687	dREQ;
1670		1688
1671	req->type = ix;	1689	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);	1690	req_set_path1 (req, oldpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);	1691	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1674	req->sv1 = newSVsv (newpath);	1692	req->int3 = (long)wd2;
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1693
1677	REQ_SEND;	1694	REQ_SEND;
1678	}	1695	}
1679		1696
1680	void	1697	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1698	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1682	PPCODE:	1699	PPCODE:
1683	{	1700	{
		1701	eio_wd wd2 = 0;
1684	dREQ;	1702	dREQ;
1685		1703
1686	req->type = REQ_MKNOD;	1704	req->type = EIO_RENAME;
1687	req->sv1 = newSVsv (pathname);	1705	req_set_path1 (req, oldpath);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);	1706	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1689	req->mode = (mode_t)mode;	1707	req->int2 = flags;
1690	req->offs = dev;	1708	req->int3 = (long)wd2;
1691		1709
1692	REQ_SEND;	1710	REQ_SEND;
1693	}	1711	}
1694		1712
1695	void	1713	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1714	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1697	PPCODE:	1715	PPCODE:
1698	{	1716	{
1699	dREQ;	1717	dREQ;
		1718
		1719	req->type = EIO_MKNOD;
		1720	req->int2 = (mode_t)mode;
		1721	req->offs = dev;
		1722	req_set_path1 (req, pathname);
		1723
		1724	REQ_SEND;
		1725	}
1700		1726
		1727	void
		1728	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1729	ALIAS:
		1730	aio_mtouch = EIO_MTOUCH
		1731	aio_msync = EIO_MSYNC
		1732	PPCODE:
		1733	{
		1734	STRLEN svlen;
		1735	char *svptr = SvPVbyte (data, svlen);
		1736	UV len = SvUV (length);
		1737
		1738	if (flags < 0)
		1739	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1740
		1741	if (offset < 0)
		1742	offset += svlen;
		1743
		1744	if (offset < 0 || offset > svlen)
		1745	croak ("offset outside of scalar");
		1746
		1747	if (!SvOK (length) || len + offset > svlen)
		1748	len = svlen - offset;
		1749
		1750	{
		1751	dREQ;
		1752
		1753	req->type = ix;
		1754	req->sv2 = SvREFCNT_inc (data);
		1755	req->ptr2 = (char *)svptr + offset;
		1756	req->size = len;
		1757	req->int1 = flags;
		1758
		1759	REQ_SEND;
		1760	}
		1761	}
		1762
		1763	void
		1764	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1765	PPCODE:
		1766	{
		1767	STRLEN svlen;
		1768	char *svptr = SvPVbyte (data, svlen);
		1769	UV len = SvUV (length);
		1770
		1771	if (offset < 0)
		1772	offset += svlen;
		1773
		1774	if (offset < 0 || offset > svlen)
		1775	croak ("offset outside of scalar");
		1776
		1777	if (!SvOK (length) || len + offset > svlen)
		1778	len = svlen - offset;
		1779
		1780	{
		1781	dREQ;
		1782
		1783	req->type = EIO_MLOCK;
		1784	req->sv2 = SvREFCNT_inc (data);
		1785	req->ptr2 = (char *)svptr + offset;
		1786	req->size = len;
		1787
		1788	REQ_SEND;
		1789	}
		1790	}
		1791
		1792	void
		1793	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1794	PPCODE:
		1795	{
		1796	dREQ;
		1797
		1798	req->type = EIO_MLOCKALL;
		1799	req->int1 = flags;
		1800
		1801	REQ_SEND;
		1802	}
		1803
		1804	void
		1805	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1806	PPCODE:
		1807	{
		1808	int fd = s_fileno_croak (fh, 0);
		1809	dREQ;
		1810
		1811	req->type = EIO_CUSTOM;
		1812	req->sv1 = newSVsv (fh);
		1813	req->int1 = fd;
		1814
		1815	req->feed = fiemap;
		1816	#if HAVE_FIEMAP
		1817	/* keep our fingers crossed that the next two types are 64 bit */
		1818	req->offs = start;
		1819	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1820	req->int2 = flags;
		1821	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1822	#endif
		1823
		1824	REQ_SEND;
		1825	}
		1826
		1827	void
		1828	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1829	PPCODE:
		1830	{
		1831	char *svptr = 0;
		1832
		1833	sv_clear_foreign (data);
		1834
		1835	if (length) /* known length, directly read into scalar */
		1836	{
		1837	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1838	svptr = sv_grow (data, length + 1);
		1839	else if (SvCUR (data) < length)
		1840	croak ("length outside of scalar, and cannot grow");
		1841	else
		1842	svptr = SvPVbyte_nolen (data);
		1843	}
		1844
		1845	{
		1846	dREQ;
		1847
		1848	req->type = EIO_SLURP;
		1849	req_set_path1 (req, pathname);
		1850	req->offs = offset;
		1851	req->size = length;
		1852	req->sv2 = SvREFCNT_inc (data);
		1853	req->ptr2 = svptr;
		1854
		1855	if (!SvREADONLY (data))
		1856	{
		1857	SvREADONLY_on (data);
		1858	req->flags |= FLAG_SV2_RO_OFF;
		1859	}
		1860
		1861	REQ_SEND;
		1862	}
		1863	}
		1864
		1865	void
		1866	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1867	PPCODE:
		1868	{
		1869	dREQ;
		1870
1701	req->type = REQ_BUSY;	1871	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	1872	req->nv1 = delay < 0. ? 0. : delay;
1703		1873
1704	REQ_SEND;	1874	REQ_SEND;
1705	}	1875	}
1706		1876
1707	void	1877	void
1708	aio_group (SV *callback=&PL_sv_undef)	1878	aio_group (SV *callback = &PL_sv_undef)
1709	PROTOTYPE: ;$
1710	PPCODE:	1879	PPCODE:
1711	{	1880	{
1712	dREQ;	1881	dREQ;
1713		1882
1714	req->type = REQ_GROUP;	1883	req->type = EIO_GROUP;
1715		1884
		1885	PUTBACK;
1716	req_send (req);	1886	req_submit (req);
		1887	SPAGAIN;
		1888
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1889	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	1890	}
1719		1891
1720	void	1892	void
1721	aio_nop (SV *callback=&PL_sv_undef)	1893	aio_nop (SV *callback = &PL_sv_undef)
		1894	ALIAS:
		1895	aio_nop = EIO_NOP
		1896	aio_sync = EIO_SYNC
1722	PPCODE:	1897	PPCODE:
1723	{	1898	{
1724	dREQ;	1899	dREQ;
1725		1900
1726	req->type = REQ_NOP;	1901	req->type = ix;
1727		1902
1728	REQ_SEND;	1903	REQ_SEND;
1729	}	1904	}
1730		1905
1731	int	1906	int
1732	aioreq_pri (int pri = 0)	1907	aioreq_pri (int pri = NO_INIT)
1733	PROTOTYPE: ;$
1734	CODE:	1908	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	1909	RETVAL = next_pri;
1736	if (items > 0)	1910	if (items > 0)
1737	{	1911	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	1912	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	1913	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	1914	next_pri = pri;
1741	}	1915	}
1742	OUTPUT:	1916	OUTPUT:
1743	RETVAL	1917	RETVAL
1744		1918
1745	void	1919	void
1746	aioreq_nice (int nice = 0)	1920	aioreq_nice (int nice = 0)
1747	CODE:	1921	CODE:
1748	nice = next_pri - nice;	1922	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	1923	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	1924	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	1925	next_pri = nice;
1752		1926
1753	void	1927	void
1754	flush ()	1928	flush ()
1755	PROTOTYPE:
1756	CODE:	1929	CODE:
1757	while (nreqs)	1930	while (eio_nreqs ())
1758	{	1931	{
1759	poll_wait ();	1932	poll_wait ();
1760	poll_cb ();	1933	poll_cb ();
1761	}	1934	}
1762		1935
1763	int	1936	int
1764	poll()	1937	poll ()
1765	PROTOTYPE:
1766	CODE:	1938	CODE:
1767	poll_wait ();	1939	poll_wait ();
1768	RETVAL = poll_cb ();	1940	RETVAL = poll_cb ();
1769	OUTPUT:	1941	OUTPUT:
1770	RETVAL	1942	RETVAL
1771		1943
1772	int	1944	int
1773	poll_fileno()	1945	poll_fileno ()
1774	PROTOTYPE:
1775	CODE:	1946	CODE:
1776	RETVAL = respipe [0];	1947	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	1948	OUTPUT:
1778	RETVAL	1949	RETVAL
1779		1950
1780	int	1951	int
1781	poll_cb(...)	1952	poll_cb (...)
1782	PROTOTYPE:	1953	PROTOTYPE:
1783	CODE:	1954	CODE:
1784	RETVAL = poll_cb ();	1955	RETVAL = poll_cb ();
1785	OUTPUT:	1956	OUTPUT:
1786	RETVAL	1957	RETVAL
1787		1958
1788	void	1959	void
1789	poll_wait()	1960	poll_wait ()
1790	PROTOTYPE:
1791	CODE:	1961	CODE:
1792	poll_wait ();	1962	poll_wait ();
1793		1963
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	1964	int
1832	nreqs()	1965	nreqs ()
1833	PROTOTYPE:
1834	CODE:	1966	CODE:
1835	RETVAL = nreqs;	1967	RETVAL = eio_nreqs ();
1836	OUTPUT:	1968	OUTPUT:
1837	RETVAL	1969	RETVAL
1838		1970
1839	int	1971	int
1840	nready()	1972	nready ()
1841	PROTOTYPE:
1842	CODE:	1973	CODE:
1843	RETVAL = get_nready ();	1974	RETVAL = eio_nready ();
1844	OUTPUT:	1975	OUTPUT:
1845	RETVAL	1976	RETVAL
1846		1977
1847	int	1978	int
1848	npending()	1979	npending ()
1849	PROTOTYPE:
1850	CODE:	1980	CODE:
1851	RETVAL = get_npending ();	1981	RETVAL = eio_npending ();
1852	OUTPUT:	1982	OUTPUT:
1853	RETVAL	1983	RETVAL
1854		1984
1855	int	1985	int
1856	nthreads()	1986	nthreads ()
1857	PROTOTYPE:
1858	CODE:	1987	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1988	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1989	OUTPUT:
1863	RETVAL	1990	RETVAL
1864		1991
		1992	int
		1993	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1994	CODE:
		1995	RETVAL = posix_fadvise (fh, offset, length, advice);
		1996	OUTPUT:
		1997	RETVAL
		1998
		1999	IV
		2000	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2001	CODE:
		2002	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2003	OUTPUT:
		2004	RETVAL
		2005
		2006	void
		2007	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2008	PPCODE:
		2009	sv_clear_foreign (scalar);
		2010	{
		2011	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2012	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2013	if (addr == (void *)-1)
		2014	XSRETURN_NO;
		2015
		2016	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2017
		2018	if (!(prot & PROT_WRITE))
		2019	SvREADONLY_on (scalar);
		2020
		2021	XSRETURN_YES;
		2022	}
		2023
		2024	void
		2025	munmap (SV *scalar)
		2026	CODE:
		2027	sv_clear_foreign (scalar);
		2028
		2029	int
		2030	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2031	ALIAS:
		2032	mprotect = 1
		2033	CODE:
		2034	{
		2035	STRLEN svlen;
		2036	void *addr = SvPVbyte (scalar, svlen);
		2037	STRLEN len = SvUV (length);
		2038
		2039	if (offset < 0)
		2040	offset += svlen;
		2041
		2042	if (offset < 0 || offset > svlen)
		2043	croak ("offset outside of scalar");
		2044
		2045	if (!SvOK (length) || len + offset > svlen)
		2046	len = svlen - offset;
		2047
		2048	addr = (void *)(((intptr_t)addr) + offset);
		2049	eio_page_align (&addr, &len);
		2050
		2051	switch (ix)
		2052	{
		2053	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2054	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2055	}
		2056	}
		2057	OUTPUT:
		2058	RETVAL
		2059
		2060	int
		2061	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2062	CODE:
		2063	{
		2064	STRLEN svlen;
		2065	void *addr = SvPVbyte (scalar, svlen);
		2066	size_t len = SvUV (length);
		2067
		2068	if (offset < 0)
		2069	offset += svlen;
		2070
		2071	if (offset < 0 || offset > svlen)
		2072	croak ("offset outside of scalar");
		2073
		2074	if (!SvOK (length) || len + offset > svlen)
		2075	len = svlen - offset;
		2076
		2077	addr = (void *)(((intptr_t)addr) + offset);
		2078	eio_page_align (&addr, &len);
		2079	#if _POSIX_MEMLOCK_RANGE
		2080	RETVAL = munlock (addr, len);
		2081	#else
		2082	RETVAL = EIO_ENOSYS ();
		2083	#endif
		2084	}
		2085	OUTPUT:
		2086	RETVAL
		2087
		2088	int
		2089	munlockall ()
		2090	CODE:
		2091	#if _POSIX_MEMLOCK
		2092	munlockall ();
		2093	#else
		2094	RETVAL = EIO_ENOSYS ();
		2095	#endif
		2096	OUTPUT:
		2097	RETVAL
		2098
		2099	int
		2100	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2101	CODE:
		2102	{
		2103	#if HAVE_LINUX_SPLICE
		2104	loff_t off_in_, off_out_;
		2105	RETVAL = splice (
		2106	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2107	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2108	length, flags
		2109	);
		2110	#else
		2111	RETVAL = EIO_ENOSYS ();
		2112	#endif
		2113	}
		2114	OUTPUT:
		2115	RETVAL
		2116
		2117	int
		2118	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2119	CODE:
		2120	#if HAVE_LINUX_SPLICE
		2121	RETVAL = tee (rfh, wfh, length, flags);
		2122	#else
		2123	RETVAL = EIO_ENOSYS ();
		2124	#endif
		2125	OUTPUT:
		2126	RETVAL
		2127
		2128	int
		2129	pipesize (aio_rfd rfh, int new_size = -1)
		2130	PROTOTYPE: $;$
		2131	CODE:
		2132	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2133	if (new_size >= 0)
		2134	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2135	else
		2136	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2137	#else
		2138	errno = ENOSYS;
		2139	RETVAL = -1;
		2140	#endif
		2141	OUTPUT:
		2142	RETVAL
		2143
		2144	void
		2145	pipe2 (int flags = 0)
		2146	PROTOTYPE: ;$
		2147	PPCODE:
		2148	{
		2149	int fd[2];
		2150	int res;
		2151
		2152	if (flags)
		2153	#if HAVE_PIPE2
		2154	res = pipe2 (fd, flags);
		2155	#else
		2156	res = (errno = ENOSYS, -1);
		2157	#endif
		2158	else
		2159	res = pipe (fd);
		2160
		2161	if (!res)
		2162	{
		2163	EXTEND (SP, 2);
		2164	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2165	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2166	}
		2167	}
		2168
		2169	void
		2170	eventfd (unsigned int initval = 0, int flags = 0)
		2171	PPCODE:
		2172	{
		2173	int fd;
		2174	#if HAVE_EVENTFD
		2175	fd = eventfd (initval, flags);
		2176	#else
		2177	fd = (errno = ENOSYS, -1);
		2178	#endif
		2179
		2180	XPUSHs (newmortalFH (fd, O_RDWR));
		2181	}
		2182
		2183	UV
		2184	get_fdlimit ()
		2185	CODE:
		2186	#if HAVE_RLIMITS
		2187	struct rlimit rl;
		2188	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2189	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2190	#endif
		2191	XSRETURN_UNDEF;
		2192	OUTPUT:
		2193	RETVAL
		2194
		2195	void
		2196	min_fdlimit (UV limit = 0x7fffffffU)
		2197	CODE:
		2198	{
		2199	#if HAVE_RLIMITS
		2200	struct rlimit rl;
		2201	rlim_t orig_rlim_max;
		2202	UV bit;
		2203
		2204	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2205	goto fail;
		2206
		2207	if (rl.rlim_cur == RLIM_INFINITY)
		2208	XSRETURN_YES;
		2209
		2210	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2211
		2212	if (rl.rlim_cur < limit)
		2213	{
		2214	rl.rlim_cur = limit;
		2215
		2216	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2217	rl.rlim_max = rl.rlim_cur;
		2218	}
		2219
		2220	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2221	XSRETURN_YES;
		2222
		2223	if (errno == EPERM)
		2224	{
		2225	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2226	/* our limit overflows a system-wide limit */
		2227	/* try an adaptive algorithm, but do not lower the hardlimit */
		2228	rl.rlim_max = 0;
		2229	for (bit = 0x40000000U; bit; bit >>= 1)
		2230	{
		2231	rl.rlim_max |= bit;
		2232	rl.rlim_cur = rl.rlim_max;
		2233
		2234	/* nevr decrease the hard limit */
		2235	if (rl.rlim_max < orig_rlim_max)
		2236	break;
		2237
		2238	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2239	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2240	}
		2241
		2242	/* now, raise the soft limit to the max permitted */
		2243	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2244	{
		2245	rl.rlim_cur = rl.rlim_max;
		2246	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2247	errno = EPERM;
		2248	}
		2249	}
		2250	#endif
		2251	fail:
		2252	XSRETURN_UNDEF;
		2253	}
		2254
		2255	void _on_next_submit (SV *cb)
		2256	CODE:
		2257	SvREFCNT_dec (on_next_submit);
		2258	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2259
1865	PROTOTYPES: DISABLE	2260	PROTOTYPES: DISABLE
		2261
		2262	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2263
		2264	BOOT:
		2265	{
		2266	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2267	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2268	}
		2269
		2270	void
		2271	DESTROY (SV *self)
		2272	CODE:
		2273	{
		2274	aio_wd wd = SvAIO_WD (self);
		2275	#if HAVE_AT
		2276	{
		2277	SV *callback = &PL_sv_undef;
		2278	dREQ; /* clobbers next_pri :/ */
		2279	next_pri = req->pri; /* restore next_pri */
		2280	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2281	req->type = EIO_WD_CLOSE;
		2282	req->wd = wd;
		2283	REQ_SEND;
		2284	}
		2285	#else
		2286	eio_wd_close_sync (wd);
		2287	#endif
		2288	}
1866		2289
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2290	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		2291
1869	void	2292	void
1870	cancel (aio_req_ornot req)	2293	cancel (aio_req_ornot req)
1871	CODE:	2294	CODE:
1872	req_cancel (req);	2295	eio_cancel (req);
1873		2296
1874	void	2297	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2298	cb (aio_req_ornot req, SV *callback = NO_INIT)
1876	CODE:	2299	PPCODE:
		2300	{
		2301	if (GIMME_V != G_VOID)
		2302	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2303
		2304	if (items > 1)
		2305	{
		2306	SV *cb_cv = get_cb (callback);
		2307
1877	SvREFCNT_dec (req->callback);	2308	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	2309	req->callback = SvREFCNT_inc (cb_cv);
		2310	}
		2311	}
1879		2312
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2313	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		2314
1882	void	2315	void
1883	add (aio_req grp, ...)	2316	add (aio_req grp, ...)
1884	PPCODE:	2317	PPCODE:
1885	{	2318	{
1886	int i;	2319	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		2320
1892	if (grp->int1 == 2)	2321	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2322	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		2323
1895	for (i = 1; i < items; ++i )	2324	for (i = 1; i < items; ++i )
1896	{	2325	{
		2326	aio_req req;
		2327
1897	if (GIMME_V != G_VOID)	2328	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2329	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		2330
1900	req = SvAIO_REQ (ST (i));	2331	req = SvAIO_REQ (ST (i));
1901		2332
1902	if (req)	2333	if (req)
1903	{	2334	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	2335	}
1916	}	2336	}
1917		2337
1918	void	2338	void
1919	cancel_subs (aio_req_ornot req)	2339	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	2348	AV *av;
1929		2349
1930	grp->errorno = errno;	2350	grp->errorno = errno;
1931		2351
1932	av = newAV ();	2352	av = newAV ();
		2353	av_extend (av, items - 1);
1933		2354
1934	for (i = 1; i < items; ++i )	2355	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	2356	av_push (av, newSVsv (ST (i)));
1936		2357
1937	SvREFCNT_dec (grp->sv1);	2358	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	2365	grp->errorno = errorno;
1945		2366
1946	void	2367	void
1947	limit (aio_req grp, int limit)	2368	limit (aio_req grp, int limit)
1948	CODE:	2369	CODE:
1949	grp->int2 = limit;	2370	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		2371
1952	void	2372	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	2373	feed (aio_req grp, SV *callback = &PL_sv_undef)
1954	CODE:	2374	CODE:
1955	{	2375	{
1956	SvREFCNT_dec (grp->sv2);	2376	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	2377	grp->sv2 = newSVsv (callback);
		2378	grp->feed = aio_grp_feed;
1958		2379
1959	if (grp->int2 <= 0)	2380	if (grp->int2 <= 0)
1960	grp->int2 = 2;	2381	grp->int2 = 2;
1961		2382
1962	aio_grp_feed (grp);	2383	eio_grp_limit (grp, grp->int2);
1963	}	2384	}
1964		2385

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