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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.252 by root, Sat Jan 6 02:11:10 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_RLIMITS
27	# include <sys/sendfile.h>	112	#include <sys/time.h>
28	# elif __freebsd
29	# include <sys/socket.h>	113	#include <sys/resource.h>
30	# include <sys/uio.h>	114	#endif
31	# elif __hpux	115
32	# include <sys/socket.h>	116	typedef SV SV8; /* byte-sv, used for argument-checking */
33	# elif __solaris /* not yet */	117	typedef int aio_rfd; /* read file desriptor */
34	# include <sys/sendfile.h>	118	typedef int aio_wfd; /* write file descriptor */
		119
		120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		121
		122	#define EIO_REQ_MEMBERS \
		123	SV *callback; \
		124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
		126	STRLEN stroffset; \
		127	SV *self;
		128
		129	#define EIO_NO_WRAPPERS 1
		130
		131	#include "libeio/eio.h"
		132
		133	static int req_invoke (eio_req *req);
		134	#define EIO_FINISH(req) req_invoke (req)
		135	static void req_destroy (eio_req *grp);
		136	#define EIO_DESTROY(req) req_destroy (req)
		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
35	# else	151	# else
36	# error sendfile support requested but not available	152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	153	# endif
38	#endif	154	#endif
39		155
40	/* number of seconds after which idle threads exit */	156	/* defines all sorts of constants to 0 unless they are already defined */
41	#define IDLE_TIMEOUT 10	157	/* also provides const_iv_ and const_niv_ macros for them */
		158	#include "def0.h"
42		159
43	/* used for struct dirent, AIX doesn't provide it */	160	#ifndef makedev
44	#ifndef NAME_MAX	161	# define makedev(maj,min) (((maj) << 8) | (min))
45	# define NAME_MAX 4096
46	#endif	162	#endif
47		163	#ifndef major
48	/* buffer size for various temporary buffers */	164	# define major(dev) ((dev) >> 8)
49	#define AIO_BUFSIZE 65536
50
51	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8
53	# define SvVAL64 SvIV
54	#else
55	# define SvVAL64 SvNV
56	#endif	165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
57		169
58	#define dBUF \	170	#if PAGESIZE <= 0
59	char *aio_buf; \	171	# define PAGESIZE sysconf (_SC_PAGESIZE)
60	LOCK (wrklock); \	172	#endif
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	173
62	UNLOCK (wrklock); \	174	/*****************************************************************************/
63	if (!aio_buf) \	175
		176	#if !_POSIX_MAPPED_FILES
		177	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		178	# define munmap(addr,length) EIO_ENOSYS ()
		179	#endif
		180
		181	#if !_POSIX_MEMORY_PROTECTION
		182	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		183	#endif
		184
		185	#define FOREIGN_MAGIC PERL_MAGIC_ext
		186
		187	static int ecb_cold
		188	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		189	{
		190	int old_errno = errno;
		191	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		192	errno = old_errno;
		193
		194	mg->mg_obj = 0; /* just in case */
		195
		196	SvREADONLY_off (sv);
		197
		198	if (SvPVX (sv) != mg->mg_ptr)
		199	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		200
		201	SvCUR_set (sv, 0);
		202	SvPVX (sv) = 0;
		203	SvOK_off (sv);
		204
64	return -1;	205	return 0;
		206	}
65		207
66	typedef SV SV8; /* byte-sv, used for argument-checking */	208	static MGVTBL mmap_vtbl = {
67		209	0, 0, 0, 0, mmap_free
68	enum {
69	REQ_QUIT,
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	210	};
84		211
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	212	static int ecb_cold
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	213	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88	typedef struct aio_cb
89	{	214	{
90	struct aio_cb *volatile next;	215	free (mg->mg_ptr);
		216	mg->mg_obj = 0; /* just in case */
91		217
92	SV *callback;	218	SvREADONLY_off (sv);
93	SV *sv1, *sv2;
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99		219
100	STRLEN stroffset;	220	if (SvPVX (sv) != mg->mg_ptr)
101	int type;	221	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		222
106	unsigned char flags;	223	SvCUR_set (sv, 0);
107	unsigned char pri;	224	SvPVX (sv) = 0;
		225	SvOK_off (sv);
108		226
109	SV *self; /* the perl counterpart of this request, if any */	227	return 0;
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	228	}
111	} aio_cb;
112		229
113	enum {	230	static MGVTBL sysfree_vtbl = {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */	231	0, 0, 0, 0, sysfree_free
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};	232	};
118		233
119	typedef aio_cb *aio_req;	234	/*****************************************************************************/
120	typedef aio_cb *aio_req_ornot;
121		235
122	enum {	236	/* helper: set scalar to foreign ptr with custom free */
123	PRI_MIN = -4,	237	static void
124	PRI_MAX = 4,	238	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
125
126	DEFAULT_PRI = 0,
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{	239	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	240	sv_force_normal (sv);
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142		241
143	static thread_t main_tid;	242	/* we store the length in mg_obj, as namlen is I32 :/ */
144	static int main_sig;	243	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
145	static int block_sig_level;	244	->mg_obj = (SV *)length;
146		245
147	void block_sig ()	246	SvUPGRADE (sv, SVt_PV); /* nop... */
148	{
149	sigset_t ss;
150		247
151	if (block_sig_level++)	248	if (SvLEN (sv))
		249	Safefree (SvPVX (sv));
		250
		251	SvPVX (sv) = (char *)addr;
		252	SvCUR_set (sv, length);
		253	SvLEN_set (sv, 0);
		254	SvPOK_only (sv);
		255	}
		256
		257	static void
		258	sv_clear_foreign (SV *sv)
		259	{
		260	/* todo: iterate over magic and only free ours, but of course */
		261	/* the perl5porters will call that (correct) behaviour buggy */
		262	sv_unmagic (sv, FOREIGN_MAGIC);
		263	}
		264
		265	/*****************************************************************************/
		266
		267	static void
		268	fiemap (eio_req *req)
		269	{
		270	req->result = -1;
		271
		272	#if HAVE_FIEMAP
		273	/* assume some c99 */
		274	struct fiemap *fiemap = 0;
		275	size_t end_offset;
		276	int count = req->int3;
		277
		278	req->flags |= EIO_FLAG_PTR1_FREE;
		279
		280	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		281	/* increase in 3.5kb steps */
		282	if (count < 0)
		283	count = 8;
		284
		285	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		286	errno = ENOMEM;
		287	if (!fiemap)
152	return;	288	return;
153		289
154	if (!main_sig)	290	req->ptr1 = fiemap;
		291
		292	fiemap->fm_start = req->offs;
		293	fiemap->fm_length = req->size;
		294	fiemap->fm_flags = req->int2;
		295	fiemap->fm_extent_count = count;
		296
		297	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
155	return;	298	return;
156		299
157	sigemptyset (&ss);	300	if (req->int3 >= 0 /* not autosizing */
158	sigaddset (&ss, main_sig);	301	|| !fiemap->fm_mapped_extents /* no more extents */
159	pthread_sigmask (SIG_BLOCK, &ss, 0);	302	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160	}	303	goto done;
161		304
162	void unblock_sig ()	305	/* else we have to loop -
163	{	306	* it would be tempting (actually I tried that first) to just query the
164	sigset_t ss;	307	* number of extents needed, but linux often feels like not returning all
		308	* extents, without telling us it left any out. this complicates
		309	* this quite a bit.
		310	*/
165		311
166	if (--block_sig_level)	312	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167	return;
168		313
169	if (!main_sig)	314	for (;;)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{	315	{
202	closedir (wrk->dirp);	316	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
203	wrk->dirp = 0;	317	char scratch[3072];
204	}	318	struct fiemap *incmap = (struct fiemap *)scratch;
205		319
206	if (wrk->dbuf)	320	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207	{	321	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208	free (wrk->dbuf);	322	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209	wrk->dbuf = 0;	323	incmap->fm_flags = fiemap->fm_flags;
210	}	324	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211	}
212		325
213	static void worker_free (worker *wrk)	326	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;	327	return;
308		328
309	--q->size;	329	if (!incmap->fm_mapped_extents)
		330	goto done;
310		331
311	for (pri = NUM_PRI; pri--; )	332	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
312	{	333	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
313	aio_req req = q->qs[pri];	334	errno = ENOMEM;
314
315	if (req)	335	if (!fiemap)
		336	return;
		337
		338	req->ptr1 = fiemap;
		339
		340	for (count = 0; count < incmap->fm_mapped_extents; ++count)
316	{	341	{
317	if (!(q->qs[pri] = req->next))	342	struct fiemap_extent *e = incmap->fm_extents + count;
318	q->qe[pri] = 0;
319		343
320	return req;	344	if (e->fe_logical + e->fe_length >= end_offset)
		345	goto done;
		346
		347	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		348
		349	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		350	goto done;
		351
321	}	352	}
322	}	353	}
323		354
324	abort ();	355	done:
325	}	356	req->result = 0;
326		357
327	static int poll_cb ();	358	#else
328	static int req_invoke (aio_req req);	359	errno = ENOSYS;
		360	#endif
		361	}
		362
		363	/*****************************************************************************/
		364
		365	enum {
		366	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		367	};
		368
		369	typedef eio_req *aio_req;
		370	typedef eio_req *aio_req_ornot;
		371	typedef eio_wd aio_wd;
		372
		373	static SV *on_next_submit;
		374	static int next_pri = EIO_PRI_DEFAULT;
		375	static int max_outstanding;
		376
		377	static s_epipe respipe;
		378
329	static void req_destroy (aio_req req);	379	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	380	static void req_cancel (aio_req req);
331		381
		382	static void
		383	want_poll (void)
		384	{
		385	/* write a dummy byte to the pipe so fh becomes ready */
		386	s_epipe_signal (&respipe);
		387	}
		388
		389	static void
		390	done_poll (void)
		391	{
		392	/* read any signals sent by the worker threads */
		393	s_epipe_drain (&respipe);
		394	}
		395
332	/* must be called at most once */	396	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	397	static SV *
		398	req_sv (aio_req req, HV *stash)
334	{	399	{
335	if (!req->self)	400	if (!req->self)
336	{	401	{
337	req->self = (SV *)newHV ();	402	req->self = (SV *)newHV ();
338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	403	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339	}	404	}
340		405
341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	406	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342	}	407	}
343		408
344	static aio_req SvAIO_REQ (SV *sv)	409	static SV *
		410	newSVaio_wd (aio_wd wd)
		411	{
		412	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		413	}
		414
		415	static aio_req
		416	SvAIO_REQ (SV *sv)
345	{	417	{
346	MAGIC *mg;	418	MAGIC *mg;
347		419
348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	420	if (!SvROK (sv)
		421	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		422	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		423	&& SvSTASH (SvRV (sv)) != aio_req_stash
		424	&& !sv_derived_from (sv, "IO::AIO::REQ")))
349	croak ("object of class " AIO_REQ_KLASS " expected");	425	croak ("object of class IO::AIO::REQ expected");
350		426
351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	427	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352		428
353	return mg ? (aio_req)mg->mg_ptr : 0;	429	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	430	}
355		431
		432	static aio_wd
		433	SvAIO_WD (SV *sv)
		434	{
		435	if (!SvROK (sv)
		436	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		437	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		438	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		439
		440	return (aio_wd)(long)SvIVX (SvRV (sv));
		441	}
		442
		443	static SV *
		444	newmortalFH (int fd, int flags)
		445	{
		446	if (fd < 0)
		447	return &PL_sv_undef;
		448
		449	GV *gv = (GV *)sv_newmortal ();
		450	char sym[64];
		451	int symlen;
		452
		453	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		454	gv_init (gv, aio_stash, sym, symlen, 0);
		455
		456	symlen = snprintf (
		457	sym,
		458	sizeof (sym),
		459	"%s&=%d",
		460	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		461	fd
		462	);
		463
		464	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		465	? (SV *)gv : &PL_sv_undef;
		466	}
		467
		468	static void
356	static void aio_grp_feed (aio_req grp)	469	aio_grp_feed (aio_req grp)
357	{	470	{
358	block_sig ();	471	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	472	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	473	dSP;
367		474
368	ENTER;	475	ENTER;
369	SAVETMPS;	476	SAVETMPS;
370	PUSHMARK (SP);	477	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	478	XPUSHs (req_sv (grp, aio_grp_stash));
372	PUTBACK;	479	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	480	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	481	SPAGAIN;
375	FREETMPS;	482	FREETMPS;
376	LEAVE;	483	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	484	}
387
388	unblock_sig ();
389	}	485	}
390		486
391	static void aio_grp_dec (aio_req grp)	487	static void
		488	req_submit (eio_req *req)
392	{	489	{
393	--grp->size;	490	eio_submit (req);
394		491
395	/* call feeder, if applicable */	492	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	493	{
401	block_sig ();	494	dSP;
		495	SV *cb = sv_2mortal (on_next_submit);
402		496
403	if (!req_invoke (grp))	497	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		498
410	req_destroy (grp);	499	PUSHMARK (SP);
411	unblock_sig ();	500	PUTBACK;
		501	call_sv (cb, G_DISCARD | G_EVAL);
412	}	502	}
413	}	503	}
414		504
		505	static int
415	static int req_invoke (aio_req req)	506	req_invoke (eio_req *req)
416	{	507	{
417	dSP;
418
419	if (req->flags & FLAG_SV2_RO_OFF)	508	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	509	SvREADONLY_off (req->sv2);
421		510
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	511	if (!EIO_CANCELLED (req) && req->callback)
423	{	512	{
		513	dSP;
		514	static SV *sv_result_cache; /* caches the result integer SV */
		515	SV *sv_result;
		516
424	ENTER;	517	ENTER;
425	SAVETMPS;	518	SAVETMPS;
426	PUSHMARK (SP);	519	PUSHMARK (SP);
427	EXTEND (SP, 1);	520	EXTEND (SP, 1);
428		521
		522	/* do not recreate the result IV from scratch each time */
		523	if (expect_true (sv_result_cache))
		524	{
		525	sv_result = sv_result_cache; sv_result_cache = 0;
		526	SvIV_set (sv_result, req->result);
		527	SvIOK_only (sv_result);
		528	}
		529	else
		530	{
		531	sv_result = newSViv (req->result);
		532	SvREADONLY_on (sv_result);
		533	}
		534
429	switch (req->type)	535	switch (req->type)
430	{	536	{
		537	case EIO_WD_OPEN:
		538	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		539	break;
		540
431	case REQ_READDIR:	541	case EIO_READDIR:
432	{	542	{
433	SV *rv = &PL_sv_undef;	543	SV *rv = &PL_sv_undef;
434		544
435	if (req->result >= 0)	545	if (req->result >= 0)
436	{	546	{
437	int i;	547	int i;
438	char *buf = req->ptr2;	548	char *names = (char *)req->ptr2;
		549	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	550	AV *av = newAV ();
440		551
441	av_extend (av, req->result - 1);	552	av_extend (av, req->result - 1);
442		553
443	for (i = 0; i < req->result; ++i)	554	for (i = 0; i < req->result; ++i)
444	{	555	{
445	SV *sv = newSVpv (buf, 0);	556	if (req->int1 & EIO_READDIR_DENTS)
		557	{
		558	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		559
		560	if (req->int1 & EIO_READDIR_CUSTOM2)
		561	{
		562	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		563	AV *avent = newAV ();
		564
		565	av_extend (avent, 2);
		566
		567	if (!sv_type [ent->type])
		568	{
		569	sv_type [ent->type] = newSViv (ent->type);
		570	SvREADONLY_on (sv_type [ent->type]);
		571	}
		572
		573	av_store (avent, 0, namesv);
		574	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		575	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		576
		577	av_store (av, i, newRV_noinc ((SV *)avent));
		578	}
		579	else
447	av_store (av, i, sv);	580	av_store (av, i, namesv);
		581
		582	++ent;
		583	}
		584	else
		585	{
		586	SV *name = newSVpv (names, 0);
		587	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	588	names += SvCUR (name) + 1;
		589	}
449	}	590	}
450		591
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	592	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	593	}
453		594
454	PUSHs (rv);	595	PUSHs (rv);
		596
		597	if (req->int1 & EIO_READDIR_CUSTOM1)
		598	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	599	}
456	break;	600	break;
457		601
458	case REQ_OPEN:	602	case EIO_OPEN:
		603	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		604	break;
		605
		606	case EIO_STATVFS:
		607	case EIO_FSTATVFS:
459	{	608	{
460	/* convert fd to fh */	609	SV *rv = &PL_sv_undef;
461	SV *fh;	610
		611	#ifndef _WIN32
		612	if (req->result >= 0)
		613	{
		614	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		615	HV *hv = newHV ();
		616	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		617	* chooses to make it a struct.
		618	*/
		619	unsigned long fsid = 0;
		620	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
462		621
463	PUSHs (sv_2mortal (newSViv (req->result)));	622	rv = sv_2mortal (newRV_noinc ((SV *)hv));
464	PUTBACK;
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
466	SPAGAIN;
467		623
468	fh = POPs;	624	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
469	PUSHMARK (SP);	625	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		626	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		627	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		628	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		629	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		630	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		631	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		632	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		633	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		634	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		635	}
		636	#endif
		637
470	XPUSHs (fh);	638	PUSHs (rv);
471	}	639	}
		640
472	break;	641	break;
473		642
474	case REQ_GROUP:	643	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	644	req->int1 = 2; /* mark group as finished */
476		645
477	if (req->sv1)	646	if (req->sv1)
478	{	647	{
479	int i;	648	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	652	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	653	PUSHs (*av_fetch (av, i, 0));
485	}	654	}
486	break;	655	break;
487		656
488	case REQ_NOP:	657	case EIO_NOP:
489	case REQ_BUSY:	658	case EIO_BUSY:
490	break;	659	break;
491		660
492	case REQ_READLINK:	661	case EIO_READLINK:
		662	case EIO_REALPATH:
493	if (req->result > 0)	663	if (req->result > 0)
		664	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		665	break;
		666
		667	case EIO_STAT:
		668	case EIO_LSTAT:
		669	case EIO_FSTAT:
		670	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		671
		672	if (!(PL_laststatval = req->result))
		673	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		674	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		675
		676	PUSHs (sv_result);
		677	break;
		678
		679	case EIO_SEEK:
		680	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		681	break;
		682
		683	case EIO_READ:
		684	{
		685	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		686	*SvEND (req->sv2) = 0;
		687	SvPOK_only (req->sv2);
		688	SvSETMAGIC (req->sv2);
		689	PUSHs (sv_result);
		690	}
		691	break;
		692
		693	case EIO_SLURP:
		694	{
		695	if (req->result >= 0)
		696	{
		697	/* if length was originally not known, we steal the malloc'ed memory */
		698	if (req->flags & EIO_FLAG_PTR2_FREE)
		699	{
		700	req->flags &= ~EIO_FLAG_PTR2_FREE;
		701	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		702	}
		703	else
		704	{
		705	SvCUR_set (req->sv2, req->result);
		706	*SvEND (req->sv2) = 0;
		707	SvPOK_only (req->sv2);
		708	}
		709
		710	SvSETMAGIC (req->sv2);
		711	}
		712
		713	PUSHs (sv_result);
		714	}
		715	break;
		716
		717	case EIO_CUSTOM:
		718	if (req->feed == fiemap)
494	{	719	{
495	SvCUR_set (req->sv2, req->result);	720	#if HAVE_FIEMAP
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);	721	if (!req->result)
		722	{
		723	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		724
		725	if (fiemap->fm_extent_count)
		726	{
		727	AV *av = newAV ();
		728	int i;
		729
		730	while (fiemap->fm_mapped_extents)
		731	{
		732	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		733	AV *ext_av = newAV ();
		734
		735	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		736	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		737	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		738	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		739
		740	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		741	}
		742
		743	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		744	}
		745	else
		746	{
		747	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		748	PUSHs (sv_result);
		749	}
		750	}
		751	#endif
498	}	752	}
		753	else
		754	PUSHs (sv_result);
499	break;	755	break;
500		756
501	case REQ_STAT:	757	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502	case REQ_LSTAT:	758	if (req->result > 0)
503	case REQ_FSTAT:	759	SvIV_set (sv_result, 0);
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	760	/* FALLTHROUGH */
505	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));
508	break;
509
510	case REQ_READ:
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));
514	break;
515		761
516	default:	762	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	763	PUSHs (sv_result);
518	break;	764	break;
519	}	765	}
520		766
521	errno = req->errorno;	767	errno = req->errorno;
522		768
523	PUTBACK;	769	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	770	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	771	SPAGAIN;
		772
		773	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		774	SvREFCNT_dec (sv_result);
		775	else
		776	sv_result_cache = sv_result;
526		777
527	FREETMPS;	778	FREETMPS;
528	LEAVE;	779	LEAVE;
		780
		781	PUTBACK;
529	}	782	}
530		783
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	784	return !!SvTRUE (ERRSV);
546	}	785	}
547		786
		787	static void
548	static void req_destroy (aio_req req)	788	req_destroy (aio_req req)
549	{	789	{
550	if (req->self)	790	if (req->self)
551	{	791	{
552	sv_unmagic (req->self, PERL_MAGIC_ext);	792	sv_unmagic (req->self, PERL_MAGIC_ext);
553	SvREFCNT_dec (req->self);	793	SvREFCNT_dec (req->self);
554	}	794	}
555		795
556	SvREFCNT_dec (req->sv1);	796	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	797	SvREFCNT_dec (req->sv2);
		798	SvREFCNT_dec (req->sv3);
		799	SvREFCNT_dec (req->sv4);
558	SvREFCNT_dec (req->callback);	800	SvREFCNT_dec (req->callback);
559		801
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	802	free (req);
564	}	803	}
565		804
		805	static void
566	static void req_cancel_subs (aio_req grp)	806	req_cancel_subs (aio_req grp)
567	{	807	{
568	aio_req sub;
569
570	if (grp->type != REQ_GROUP)	808	if (grp->type != EIO_GROUP)
571	return;	809	return;
572		810
573	SvREFCNT_dec (grp->sv2);	811	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	812	grp->sv2 = 0;
575		813
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	814	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	815	}
579		816
580	static void req_cancel (aio_req req)	817	static void ecb_cold
		818	create_respipe (void)
581	{	819	{
582	req->flags |= FLAG_CANCELLED;	820	if (s_epipe_renew (&respipe))
583		821	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	822	}
586		823
587	static void *aio_proc (void *arg);	824	static void
588		825	poll_wait (void)
589	static void start_thread (void)
590	{	826	{
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	LOCK (wrklock);
597
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599	{
600	wrk->prev = &wrk_first;
601	wrk->next = wrk_first.next;
602	wrk_first.next->prev = wrk;
603	wrk_first.next = wrk;
604	++started;
605	}
606	else
607	free (wrk);
608
609	UNLOCK (wrklock);
610	}
611
612	static void maybe_start_thread ()
613	{
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}
623
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()
683	{
684	fd_set rfd;
685
686	while (nreqs)	827	while (eio_nreqs ())
687	{	828	{
688	int size;	829	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	830
		831	X_LOCK (EIO_POOL->reslock);
690	size = res_queue.size;	832	size = EIO_POOL->res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	833	X_UNLOCK (EIO_POOL->reslock);
692		834
693	if (size)	835	if (size)
694	return;	836	return;
695		837
696	maybe_start_thread ();	838	etp_maybe_start_thread (EIO_POOL);
697		839
698	FD_ZERO(&rfd);	840	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	841	}
703	}	842	}
704		843
705	static int poll_cb ()	844	static int
		845	poll_cb (void)
706	{	846	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	block_sig ();
718
719	for (;;)	847	for (;;)
720	{	848	{
721	for (;;)	849	int res = eio_poll ();
		850
		851	if (res > 0)
		852	croak (0);
		853
		854	if (!max_outstanding || max_outstanding > eio_nreqs ())
		855	return res;
		856
		857	poll_wait ();
		858	}
		859	}
		860
		861	static void ecb_cold
		862	reinit (void)
		863	{
		864	create_respipe ();
		865
		866	if (eio_init (want_poll, done_poll) < 0)
		867	croak ("IO::AIO: unable to initialise eio library");
		868	}
		869
		870	/*****************************************************************************/
		871
		872	static SV *
		873	get_cb (SV *cb_sv)
		874	{
		875	SvGETMAGIC (cb_sv);
		876	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		877	}
		878
		879	static aio_req ecb_noinline
		880	dreq (SV *callback)
		881	{
		882	SV *cb_cv;
		883	aio_req req;
		884	int req_pri = next_pri;
		885	next_pri = EIO_PRI_DEFAULT;
		886
		887	cb_cv = get_cb (callback);
		888
		889	req = calloc (sizeof (*req), 1);
		890	if (!req)
		891	croak ("out of memory during eio_req allocation");
		892
		893	req->callback = SvREFCNT_inc (cb_cv);
		894	req->pri = req_pri;
		895
		896	return req;
		897	}
		898
		899	#define dREQ \
		900	aio_req req = dreq (callback); \
		901
		902	#define REQ_SEND \
		903	PUTBACK; \
		904	req_submit (req); \
		905	SPAGAIN; \
		906	\
		907	if (GIMME_V != G_VOID) \
		908	XPUSHs (req_sv (req, aio_req_stash));
		909
		910	ecb_inline void
		911	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		912	{
		913	if (expect_false (SvROK (path)))
		914	{
		915	SV *rv = SvRV (path);
		916	SV *wdob;
		917
		918	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
722	{	919	{
723	maybe_start_thread ();	920	path = AvARRAY (rv)[1];
		921	wdob = AvARRAY (rv)[0];
724		922
725	LOCK (reslock);	923	if (SvOK (wdob))
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{	924	{
730	--npending;	925	*wd = SvAIO_WD (wdob);
731		926	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}	927	}
753	else	928	else
754	{	929	*wd = EIO_INVALID_WD;
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);
760	}
761
762	count++;
763	}
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}	930	}
		931	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		932	{
		933	*wd = (aio_wd)(long)SvIVX (rv);
		934	*wdsv = SvREFCNT_inc_NN (rv);
		935	*ptr = ".";
		936	return; /* path set to "." */
		937	}
		938	else
		939	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		940	}
778		941
779	if (nreqs <= max_outstanding)	942	*pathsv = newSVsv (path);
		943	*ptr = SvPVbyte_nolen (*pathsv);
		944	}
		945
		946	static void ecb_noinline
		947	req_set_path1 (aio_req req, SV *path)
		948	{
		949	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		950	}
		951
		952	static void ecb_noinline
		953	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		954	{
		955	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		956
		957	switch (SvTYPE (rv))
		958	{
		959	case SVt_PVIO:
		960	case SVt_PVLV:
		961	case SVt_PVGV:
		962	req->type = type_fh;
		963	req->sv1 = newSVsv (fh_or_path);
		964	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780	break;	965	break;
781		966
782	poll_wait ();	967	default:
783		968	req->type = type_path;
784	++maxreqs;	969	req_set_path1 (req, fh_or_path);
		970	break;
785	}	971	}
786
787	unblock_sig ();
788	return count;
789	}	972	}
790		973
791	static void create_pipe ()	974	XS(boot_IO__AIO) ecb_cold;
792	{
793	if (pipe (respipe))
794	croak ("unable to initialize result pipe");
795		975
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}
802
803	/*****************************************************************************/
804	/* work around various missing functions */
805
806	#if !HAVE_PREADWRITE
807	# define pread aio_pread
808	# define pwrite aio_pwrite
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{
819	ssize_t res;
820	off_t ooffset;
821
822	LOCK (preadwritelock);
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828
829	return res;
830	}
831
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;
938
939	#if HAVE_SENDFILE
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942
943	# elif __freebsd
944	/*
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952	if (res < 0 && sbytes)
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981
982	if (res < 0
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992
993	res = 0;
994
995	while (count)
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001	if (cnt <= 0)
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;
1022	}
1023
1024	/* read a full directory */
1025	static void scandir_ (aio_req req, worker *self)
1026	{
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085
1086	/*****************************************************************************/
1087
1088	static void *aio_proc (void *thr_arg)
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)
1282	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();
1311
1312	atfork_parent ();
1313	}
1314
1315	#define dREQ \
1316	aio_req req; \
1317	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \
1319	\
1320	if (SvOK (callback) && !SvROK (callback)) \
1321	croak ("callback must be undef or of reference type"); \
1322	\
1323	Newz (0, req, 1, aio_cb); \
1324	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \
1326	\
1327	req->callback = newSVsv (callback); \
1328	req->pri = req_pri
1329
1330	#define REQ_SEND \
1331	req_send (req); \
1332	\
1333	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335
1336	MODULE = IO::AIO PACKAGE = IO::AIO	976	MODULE = IO::AIO PACKAGE = IO::AIO
1337		977
1338	PROTOTYPES: ENABLE	978	PROTOTYPES: ENABLE
1339		979
1340	BOOT:	980	BOOT:
1341	{	981	{
		982	static const struct {
		983	const char *name;
		984	IV iv;
		985	} *civ, const_iv[] = {
		986	# define const_niv(name, value) { # name, (IV) value },
		987	# define const_iv(name) { # name, (IV) name },
		988	# define const_eio(name) { # name, (IV) EIO_ ## name },
		989
		990	/* you have to re-run ./gendef0 after adding/removing any constants here */
		991	/* the first block can be undef if missing */
		992	const_iv (ENOSYS)
		993	const_iv (EXDEV)
		994	const_iv (EBADR)
		995
		996	/* for lseek */
		997	const_iv (SEEK_DATA)
		998	const_iv (SEEK_HOLE)
		999
		1000	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1001	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1002	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1003	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1004	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1005	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1006
		1007	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1008	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1009	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1010	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1011	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1012
		1013	/* the second block will be 0 when missing */
		1014	const_iv (O_RDONLY)
		1015	const_iv (O_WRONLY)
		1016	const_iv (O_RDWR)
		1017	const_iv (O_CREAT)
		1018	const_iv (O_TRUNC)
		1019	const_iv (O_EXCL)
		1020	const_iv (O_APPEND)
		1021
		1022	const_iv (O_ASYNC)
		1023	const_iv (O_DIRECT)
		1024	const_iv (O_NOATIME)
		1025
		1026	const_iv (O_CLOEXEC)
		1027	const_iv (O_NOCTTY)
		1028	const_iv (O_NOFOLLOW)
		1029	const_iv (O_NONBLOCK)
		1030	const_iv (O_EXEC)
		1031	const_iv (O_SEARCH)
		1032	const_iv (O_DIRECTORY)
		1033	const_iv (O_DSYNC)
		1034	const_iv (O_RSYNC)
		1035	const_iv (O_SYNC)
		1036	const_iv (O_PATH)
		1037	const_iv (O_TMPFILE)
		1038	const_iv (O_TTY_INIT)
		1039
		1040	const_iv (S_IFIFO)
		1041	const_iv (S_IFCHR)
		1042	const_iv (S_IFBLK)
		1043	const_iv (S_IFLNK)
		1044	const_iv (S_IFREG)
		1045	const_iv (S_IFDIR)
		1046	const_iv (S_IFWHT)
		1047	const_iv (S_IFSOCK)
		1048	const_iv (S_IFMT)
		1049
		1050	const_iv (ST_RDONLY)
		1051	const_iv (ST_NOSUID)
		1052	const_iv (ST_NODEV)
		1053	const_iv (ST_NOEXEC)
		1054	const_iv (ST_SYNCHRONOUS)
		1055	const_iv (ST_MANDLOCK)
		1056	const_iv (ST_WRITE)
		1057	const_iv (ST_APPEND)
		1058	const_iv (ST_IMMUTABLE)
		1059	const_iv (ST_NOATIME)
		1060	const_iv (ST_NODIRATIME)
		1061	const_iv (ST_RELATIME)
		1062
		1063	const_iv (PROT_NONE)
		1064	const_iv (PROT_EXEC)
		1065	const_iv (PROT_READ)
		1066	const_iv (PROT_WRITE)
		1067
		1068	const_iv (MAP_PRIVATE)
		1069	const_iv (MAP_SHARED)
		1070	const_iv (MAP_FIXED)
		1071	const_iv (MAP_ANONYMOUS)
		1072
		1073	/* linuxish */
		1074	const_iv (MAP_LOCKED)
		1075	const_iv (MAP_NORESERVE)
		1076	const_iv (MAP_POPULATE)
		1077	const_iv (MAP_NONBLOCK)
		1078	const_iv (MAP_GROWSDOWN)
		1079	const_iv (MAP_32BIT)
		1080	const_iv (MAP_HUGETLB)
		1081	const_iv (MAP_STACK)
		1082
		1083	const_iv (F_DUPFD_CLOEXEC)
		1084
		1085	const_iv (F_OFD_GETLK)
		1086	const_iv (F_OFD_SETLK)
		1087	const_iv (F_OFD_GETLKW)
		1088
		1089	const_iv (FIFREEZE)
		1090	const_iv (FITHAW)
		1091	const_iv (FITRIM)
		1092	const_iv (FICLONE)
		1093	const_iv (FICLONERANGE)
		1094	const_iv (FIDEDUPERANGE)
		1095
		1096	const_iv (FS_IOC_GETFLAGS)
		1097	const_iv (FS_IOC_SETFLAGS)
		1098	const_iv (FS_IOC_GETVERSION)
		1099	const_iv (FS_IOC_SETVERSION)
		1100	const_iv (FS_IOC_FIEMAP)
		1101	const_iv (FS_IOC_FSGETXATTR)
		1102	const_iv (FS_IOC_FSSETXATTR)
		1103	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1104	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1105	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1106
		1107	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1108
		1109	const_iv (FS_SECRM_FL)
		1110	const_iv (FS_UNRM_FL)
		1111	const_iv (FS_COMPR_FL)
		1112	const_iv (FS_SYNC_FL)
		1113	const_iv (FS_IMMUTABLE_FL)
		1114	const_iv (FS_APPEND_FL)
		1115	const_iv (FS_NODUMP_FL)
		1116	const_iv (FS_NOATIME_FL)
		1117	const_iv (FS_DIRTY_FL)
		1118	const_iv (FS_COMPRBLK_FL)
		1119	const_iv (FS_NOCOMP_FL)
		1120	const_iv (FS_ENCRYPT_FL)
		1121	const_iv (FS_BTREE_FL)
		1122	const_iv (FS_INDEX_FL)
		1123	const_iv (FS_JOURNAL_DATA_FL)
		1124	const_iv (FS_NOTAIL_FL)
		1125	const_iv (FS_DIRSYNC_FL)
		1126	const_iv (FS_TOPDIR_FL)
		1127	const_iv (FS_FL_USER_MODIFIABLE)
		1128
		1129	const_iv (FS_XFLAG_REALTIME)
		1130	const_iv (FS_XFLAG_PREALLOC)
		1131	const_iv (FS_XFLAG_IMMUTABLE)
		1132	const_iv (FS_XFLAG_APPEND)
		1133	const_iv (FS_XFLAG_SYNC)
		1134	const_iv (FS_XFLAG_NOATIME)
		1135	const_iv (FS_XFLAG_NODUMP)
		1136	const_iv (FS_XFLAG_RTINHERIT)
		1137	const_iv (FS_XFLAG_PROJINHERIT)
		1138	const_iv (FS_XFLAG_NOSYMLINKS)
		1139	const_iv (FS_XFLAG_EXTSIZE)
		1140	const_iv (FS_XFLAG_EXTSZINHERIT)
		1141	const_iv (FS_XFLAG_NODEFRAG)
		1142	const_iv (FS_XFLAG_FILESTREAM)
		1143	const_iv (FS_XFLAG_DAX)
		1144	const_iv (FS_XFLAG_HASATTR)
		1145
		1146	const_iv (FIEMAP_FLAG_SYNC)
		1147	const_iv (FIEMAP_FLAG_XATTR)
		1148	const_iv (FIEMAP_FLAGS_COMPAT)
		1149	const_iv (FIEMAP_EXTENT_LAST)
		1150	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1151	const_iv (FIEMAP_EXTENT_DELALLOC)
		1152	const_iv (FIEMAP_EXTENT_ENCODED)
		1153	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1154	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1155	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1156	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1157	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1158	const_iv (FIEMAP_EXTENT_MERGED)
		1159	const_iv (FIEMAP_EXTENT_SHARED)
		1160
		1161	const_iv (SPLICE_F_MOVE)
		1162	const_iv (SPLICE_F_NONBLOCK)
		1163	const_iv (SPLICE_F_MORE)
		1164	const_iv (SPLICE_F_GIFT)
		1165
		1166	/* these are libeio constants, and are independent of gendef0 */
		1167	const_eio (SEEK_SET)
		1168	const_eio (SEEK_CUR)
		1169	const_eio (SEEK_END)
		1170
		1171	const_eio (MCL_FUTURE)
		1172	const_eio (MCL_CURRENT)
		1173
		1174	const_eio (MS_ASYNC)
		1175	const_eio (MS_INVALIDATE)
		1176	const_eio (MS_SYNC)
		1177
		1178	const_eio (MT_MODIFY)
		1179
		1180	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1181	const_eio (SYNC_FILE_RANGE_WRITE)
		1182	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1183
		1184	const_eio (FALLOC_FL_KEEP_SIZE)
		1185	const_eio (FALLOC_FL_PUNCH_HOLE)
		1186	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1187	const_eio (FALLOC_FL_ZERO_RANGE)
		1188	const_eio (FALLOC_FL_INSERT_RANGE)
		1189	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1190
		1191	const_eio (RENAME_NOREPLACE)
		1192	const_eio (RENAME_EXCHANGE)
		1193	const_eio (RENAME_WHITEOUT)
		1194
		1195	const_eio (READDIR_DENTS)
		1196	const_eio (READDIR_DIRS_FIRST)
		1197	const_eio (READDIR_STAT_ORDER)
		1198	const_eio (READDIR_FOUND_UNKNOWN)
		1199
		1200	const_eio (DT_UNKNOWN)
		1201	const_eio (DT_FIFO)
		1202	const_eio (DT_CHR)
		1203	const_eio (DT_DIR)
		1204	const_eio (DT_BLK)
		1205	const_eio (DT_REG)
		1206	const_eio (DT_LNK)
		1207	const_eio (DT_SOCK)
		1208	const_eio (DT_WHT)
		1209	};
		1210
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	1211	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1212	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1213	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1214	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1343		1215
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1216	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1217	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351		1218
1352	create_pipe ();	1219	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354	}
1355		1220
		1221	reinit ();
		1222	}
		1223
1356	void	1224	void
		1225	reinit ()
		1226	PROTOTYPE:
		1227
		1228	void
1357	max_poll_reqs (int nreqs)	1229	max_poll_reqs (unsigned int nreqs)
1358	PROTOTYPE: $	1230	PROTOTYPE: $
1359	CODE:	1231	CODE:
1360	max_poll_reqs = nreqs;	1232	eio_set_max_poll_reqs (nreqs);
1361		1233
1362	void	1234	void
1363	max_poll_time (double nseconds)	1235	max_poll_time (double nseconds)
1364	PROTOTYPE: $	1236	PROTOTYPE: $
1365	CODE:	1237	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	1238	eio_set_max_poll_time (nseconds);
1367		1239
1368	void	1240	void
1369	min_parallel (int nthreads)	1241	min_parallel (unsigned int nthreads)
1370	PROTOTYPE: $
1371
1372	void
1373	max_parallel (int nthreads)
1374	PROTOTYPE: $
1375
1376	void
1377	max_idle (int nthreads)
1378	PROTOTYPE: $	1242	PROTOTYPE: $
1379	CODE:	1243	CODE:
1380	set_max_idle (nthreads);	1244	eio_set_min_parallel (nthreads);
1381		1245
1382	int	1246	void
1383	max_outstanding (int maxreqs)	1247	max_parallel (unsigned int nthreads)
1384	PROTOTYPE: $	1248	PROTOTYPE: $
1385	CODE:	1249	CODE:
1386	RETVAL = max_outstanding;	1250	eio_set_max_parallel (nthreads);
		1251
		1252	void
		1253	max_idle (unsigned int nthreads)
		1254	PROTOTYPE: $
		1255	CODE:
		1256	eio_set_max_idle (nthreads);
		1257
		1258	void
		1259	idle_timeout (unsigned int seconds)
		1260	PROTOTYPE: $
		1261	CODE:
		1262	eio_set_idle_timeout (seconds);
		1263
		1264	void
		1265	max_outstanding (unsigned int maxreqs)
		1266	PROTOTYPE: $
		1267	CODE:
1387	max_outstanding = maxreqs;	1268	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		1269
1391	void	1270	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1271	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1393	PROTOTYPE: $$$;$
1394	PPCODE:	1272	PPCODE:
1395	{	1273	{
1396	dREQ;	1274	dREQ;
1397		1275
		1276	req->type = EIO_WD_OPEN;
		1277	req_set_path1 (req, pathname);
		1278
		1279	REQ_SEND;
		1280	}
		1281
		1282	void
		1283	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1284	PPCODE:
		1285	{
		1286	dREQ;
		1287
1398	req->type = REQ_OPEN;	1288	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	1289	req_set_path1 (req, pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	1290	req->int1 = flags;
1402	req->mode = mode;	1291	req->int2 = mode;
1403		1292
1404	REQ_SEND;	1293	REQ_SEND;
1405	}	1294	}
1406		1295
1407	void	1296	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1297	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1409	PROTOTYPE: $;$
1410	ALIAS:	1298	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC	1299	aio_fsync = EIO_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC	1300	aio_fdatasync = EIO_FDATASYNC
		1301	aio_syncfs = EIO_SYNCFS
1414	PPCODE:	1302	PPCODE:
1415	{	1303	{
		1304	int fd = s_fileno_croak (fh, 0);
1416	dREQ;	1305	dREQ;
1417		1306
1418	req->type = ix;	1307	req->type = ix;
1419	req->sv1 = newSVsv (fh);	1308	req->sv1 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1309	req->int1 = fd;
1421		1310
1422	REQ_SEND (req);	1311	REQ_SEND;
1423	}	1312	}
1424		1313
1425	void	1314	void
		1315	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1316	PPCODE:
		1317	{
		1318	int fd = s_fileno_croak (fh, 0);
		1319	dREQ;
		1320
		1321	req->type = EIO_SYNC_FILE_RANGE;
		1322	req->sv1 = newSVsv (fh);
		1323	req->int1 = fd;
		1324	req->offs = offset;
		1325	req->size = nbytes;
		1326	req->int2 = flags;
		1327
		1328	REQ_SEND;
		1329	}
		1330
		1331	void
		1332	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1333	PPCODE:
		1334	{
		1335	int fd = s_fileno_croak (fh, 0);
		1336	dREQ;
		1337
		1338	req->type = EIO_FALLOCATE;
		1339	req->sv1 = newSVsv (fh);
		1340	req->int1 = fd;
		1341	req->int2 = mode;
		1342	req->offs = offset;
		1343	req->size = len;
		1344
		1345	REQ_SEND;
		1346	}
		1347
		1348	void
		1349	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1350	PPCODE:
		1351	{
		1352	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1353	int fd = s_fileno_croak (fh, 0);
		1354	dREQ;
		1355
		1356	if (expect_false (close_fd < 0))
		1357	{
		1358	int pipefd [2];
		1359
		1360	if (
		1361	#ifdef _WIN32
		1362	_pipe (pipefd, 1, _O_BINARY) < 0
		1363	#else
		1364	pipe (pipefd) < 0
		1365	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1366	#endif
		1367	|| close (pipefd [1]) < 0
		1368	)
		1369	abort (); /*D*/
		1370
		1371	close_fd = pipefd [0];
		1372	}
		1373
		1374	req->type = EIO_DUP2;
		1375	req->int1 = close_fd;
		1376	req->sv2 = newSVsv (fh);
		1377	req->int2 = fd;
		1378
		1379	REQ_SEND;
		1380	}
		1381
		1382	void
		1383	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1384	PPCODE:
		1385	{
		1386	int fd = s_fileno_croak (fh, 0);
		1387	dREQ;
		1388
		1389	req->type = EIO_SEEK;
		1390	req->sv1 = newSVsv (fh);
		1391	req->int1 = fd;
		1392	req->offs = SvVAL64 (offset);
		1393	req->int2 = whence;
		1394
		1395	REQ_SEND;
		1396	}
		1397
		1398	void
1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1399	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1427	ALIAS:	1400	ALIAS:
1428	aio_read = REQ_READ	1401	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	1402	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$
1431	PPCODE:	1403	PPCODE:
1432	{	1404	{
1433	STRLEN svlen;	1405	STRLEN svlen;
		1406	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	1407	char *svptr = SvPVbyte (data, svlen);
1435	UV len = SvUV (length);	1408	UV len = SvUV (length);
1436		1409
1437	SvUPGRADE (data, SVt_PV);
1438	SvPOK_on (data);
1439
1440	if (dataoffset < 0)	1410	if (dataoffset < 0)
1441	dataoffset += svlen;	1411	dataoffset += svlen;
1442		1412
1443	if (dataoffset < 0 || dataoffset > svlen)	1413	if (dataoffset < 0 || dataoffset > svlen)
1444	croak ("dataoffset outside of data scalar");	1414	croak ("dataoffset outside of data scalar");
1445		1415
1446	if (ix == REQ_WRITE)	1416	if (ix == EIO_WRITE)
1447	{	1417	{
1448	/* write: check length and adjust. */	1418	/* write: check length and adjust. */
1449	if (!SvOK (length) || len + dataoffset > svlen)	1419	if (!SvOK (length) || len + dataoffset > svlen)
1450	len = svlen - dataoffset;	1420	len = svlen - dataoffset;
1451	}	1421	}
1452	else	1422	else
1453	{	1423	{
1454	/* read: grow scalar as necessary */	1424	/* read: check type and grow scalar as necessary */
		1425	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1455	svptr = SvGROW (data, len + dataoffset + 1);	1426	svptr = sv_grow (data, len + dataoffset + 1);
		1427	else if (SvCUR (data) < len + dataoffset)
		1428	croak ("length + dataoffset outside of scalar, and cannot grow");
1456	}	1429	}
1457
1458	if (len < 0)
1459	croak ("length must not be negative");
1460		1430
1461	{	1431	{
1462	dREQ;	1432	dREQ;
1463		1433
1464	req->type = ix;	1434	req->type = ix;
1465	req->sv1 = newSVsv (fh);	1435	req->sv1 = newSVsv (fh);
1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1436	req->int1 = fd;
1467	: IoOFP (sv_2io (fh)));
1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1437	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469	req->size = len;	1438	req->size = len;
1470	req->sv2 = SvREFCNT_inc (data);	1439	req->sv2 = SvREFCNT_inc (data);
1471	req->ptr1 = (char *)svptr + dataoffset;	1440	req->ptr2 = (char *)svptr + dataoffset;
1472	req->stroffset = dataoffset;	1441	req->stroffset = dataoffset;
1473		1442
1474	if (!SvREADONLY (data))	1443	if (!SvREADONLY (data))
1475	{	1444	{
1476	SvREADONLY_on (data);	1445	SvREADONLY_on (data);
…		…
1480	REQ_SEND;	1449	REQ_SEND;
1481	}	1450	}
1482	}	1451	}
1483		1452
1484	void	1453	void
1485	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1454	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1486	PROTOTYPE: $$;$	1455	ALIAS:
		1456	aio_ioctl = EIO_IOCTL
		1457	aio_fcntl = EIO_FCNTL
1487	PPCODE:	1458	PPCODE:
1488	{	1459	{
1489	SV *data;	1460	int fd = s_fileno_croak (fh, 0);
1490	dREQ;	1461	char *svptr;
1491		1462
1492	data = newSV (NAME_MAX);	1463	if (SvPOK (arg) || !SvNIOK (arg))
1493	SvPOK_on (data);
1494
1495	req->type = REQ_READLINK;
1496	req->sv1 = newSVsv (path);
1497	req->ptr2 = SvPVbyte_nolen (req->sv1);
1498	req->sv2 = data;
1499	req->ptr1 = SvPVbyte_nolen (data);
1500
1501	REQ_SEND;
1502	}
1503
1504	void
1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$$;$
1507	PPCODE:
1508	{
1509	dREQ;
1510
1511	req->type = REQ_SENDFILE;
1512	req->sv1 = newSVsv (out_fh);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1514	req->sv2 = newSVsv (in_fh);
1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1516	req->offs = SvVAL64 (in_offset);
1517	req->size = length;
1518
1519	REQ_SEND;
1520	}
1521
1522	void
1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $$$;$
1525	PPCODE:
1526	{
1527	dREQ;
1528
1529	req->type = REQ_READAHEAD;
1530	req->sv1 = newSVsv (fh);
1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1532	req->offs = SvVAL64 (offset);
1533	req->size = length;
1534
1535	REQ_SEND;
1536	}
1537
1538	void
1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540	ALIAS:
1541	aio_stat = REQ_STAT
1542	aio_lstat = REQ_LSTAT
1543	PPCODE:
1544	{
1545	dREQ;
1546
1547	req->ptr2 = malloc (sizeof (Stat_t));
1548	if (!req->ptr2)
1549	{	1464	{
1550	req_destroy (req);	1465	STRLEN svlen;
1551	croak ("out of memory during aio_stat statdata allocation");	1466	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1552	}	1467	#ifdef IOCPARM_LEN
		1468	STRLEN need = IOCPARM_LEN (request);
		1469	#else
		1470	STRLEN need = 256;
		1471	#endif
1553		1472
1554	req->flags |= FLAG_PTR2_FREE;	1473	if (svlen < need)
1555	req->sv1 = newSVsv (fh_or_path);	1474	svptr = SvGROW (arg, need);
1556
1557	if (SvPOK (fh_or_path))
1558	{
1559	req->type = ix;
1560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1561	}	1475	}
1562	else	1476	else
		1477	svptr = (char *)SvIV (arg);
		1478
1563	{	1479	{
		1480	dREQ;
		1481
1564	req->type = REQ_FSTAT;	1482	req->type = ix;
1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1483	req->sv1 = newSVsv (fh);
		1484	req->int1 = fd;
		1485	req->int2 = (long)request;
		1486	req->sv2 = SvREFCNT_inc (arg);
		1487	req->ptr2 = svptr;
		1488
		1489	REQ_SEND;
1566	}	1490	}
		1491	}
		1492
		1493	void
		1494	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1495	ALIAS:
		1496	aio_readlink = EIO_READLINK
		1497	aio_realpath = EIO_REALPATH
		1498	PPCODE:
		1499	{
		1500	dREQ;
		1501
		1502	req->type = ix;
		1503	req_set_path1 (req, pathname);
1567		1504
1568	REQ_SEND;	1505	REQ_SEND;
1569	}	1506	}
1570		1507
1571	void	1508	void
		1509	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1510	PPCODE:
		1511	{
		1512	int ifd = s_fileno_croak (in_fh , 0);
		1513	int ofd = s_fileno_croak (out_fh, 1);
		1514	dREQ;
		1515
		1516	req->type = EIO_SENDFILE;
		1517	req->sv1 = newSVsv (out_fh);
		1518	req->int1 = ofd;
		1519	req->sv2 = newSVsv (in_fh);
		1520	req->int2 = ifd;
		1521	req->offs = in_offset;
		1522	req->size = length;
		1523
		1524	REQ_SEND;
		1525	}
		1526
		1527	void
		1528	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1529	PPCODE:
		1530	{
		1531	int fd = s_fileno_croak (fh, 0);
		1532	dREQ;
		1533
		1534	req->type = EIO_READAHEAD;
		1535	req->sv1 = newSVsv (fh);
		1536	req->int1 = fd;
		1537	req->offs = offset;
		1538	req->size = length;
		1539
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1545	ALIAS:
		1546	aio_stat = EIO_STAT
		1547	aio_lstat = EIO_LSTAT
		1548	aio_statvfs = EIO_STATVFS
		1549	PPCODE:
		1550	{
		1551	dREQ;
		1552
		1553	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1554
		1555	REQ_SEND;
		1556	}
		1557
		1558	UV
		1559	major (UV dev)
		1560	ALIAS:
		1561	minor = 1
		1562	CODE:
		1563	RETVAL = ix ? minor (dev) : major (dev);
		1564	OUTPUT:
		1565	RETVAL
		1566
		1567	UV
		1568	makedev (UV maj, UV min)
		1569	CODE:
		1570	RETVAL = makedev (maj, min);
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	void
1572	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1575	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1573	PPCODE:	1576	PPCODE:
1574	{	1577	{
1575	dREQ;	1578	dREQ;
1576		1579
1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1580	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1581	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579	req->sv1 = newSVsv (fh_or_path);	1582	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1580
1581	if (SvPOK (fh_or_path))
1582	{
1583	req->type = REQ_UTIME;
1584	req->ptr1 = SvPVbyte_nolen (req->sv1);
1585	}
1586	else
1587	{
1588	req->type = REQ_FUTIME;
1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590	}
1591		1583
1592	REQ_SEND;	1584	REQ_SEND;
1593	}	1585	}
1594		1586
1595	void	1587	void
1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1588	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1597	PPCODE:	1589	PPCODE:
1598	{	1590	{
1599	dREQ;	1591	dREQ;
1600		1592
1601	req->mode = mode;	1593	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1602	req->sv1 = newSVsv (fh_or_path);	1594	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1603
1604	if (SvPOK (fh_or_path))
1605	{
1606	req->type = REQ_CHMOD;
1607	req->ptr1 = SvPVbyte_nolen (req->sv1);
1608	}
1609	else
1610	{
1611	req->type = REQ_FCHMOD;
1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613	}
1614		1595
1615	REQ_SEND;	1596	REQ_SEND;
1616	}	1597	}
1617		1598
1618	void	1599	void
		1600	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1601	PPCODE:
		1602	{
		1603	dREQ;
		1604
		1605	req->int2 = mode;
		1606	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1607
		1608	REQ_SEND;
		1609	}
		1610
		1611	void
1619	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1612	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1620	PPCODE:	1613	PPCODE:
1621	{	1614	{
1622	dREQ;	1615	dREQ;
1623		1616
1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1617	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1618	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626	req->sv1 = newSVsv (fh_or_path);	1619	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1627
1628	if (SvPOK (fh_or_path))
1629	{
1630	req->type = REQ_CHOWN;
1631	req->ptr1 = SvPVbyte_nolen (req->sv1);
1632	}
1633	else
1634	{
1635	req->type = REQ_FCHOWN;
1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637	}
1638		1620
1639	REQ_SEND;	1621	REQ_SEND;
1640	}	1622	}
1641		1623
1642	void	1624	void
		1625	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1626	PPCODE:
		1627	{
		1628	dREQ;
		1629
		1630	req->type = EIO_READDIR;
		1631	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1632
		1633	if (flags & EIO_READDIR_DENTS)
		1634	req->int1 |= EIO_READDIR_CUSTOM2;
		1635
		1636	req_set_path1 (req, pathname);
		1637
		1638	REQ_SEND;
		1639	}
		1640
		1641	void
		1642	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1643	PPCODE:
		1644	{
		1645	dREQ;
		1646
		1647	req->type = EIO_MKDIR;
		1648	req->int2 = mode;
		1649	req_set_path1 (req, pathname);
		1650
		1651	REQ_SEND;
		1652	}
		1653
		1654	void
1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1655	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1644	ALIAS:	1656	ALIAS:
1645	aio_unlink = REQ_UNLINK	1657	aio_unlink = EIO_UNLINK
1646	aio_rmdir = REQ_RMDIR	1658	aio_rmdir = EIO_RMDIR
1647	aio_readdir = REQ_READDIR	1659	aio_readdir = EIO_READDIR
1648	PPCODE:	1660	PPCODE:
1649	{	1661	{
1650	dREQ;	1662	dREQ;
1651		1663
1652	req->type = ix;	1664	req->type = ix;
1653	req->sv1 = newSVsv (pathname);	1665	req_set_path1 (req, pathname);
1654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1655		1666
1656	REQ_SEND;	1667	REQ_SEND;
1657	}	1668	}
1658		1669
1659	void	1670	void
1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1671	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1672	ALIAS:
		1673	aio_link = EIO_LINK
		1674	aio_symlink = EIO_SYMLINK
		1675	aio_rename = EIO_RENAME
1661	PPCODE:	1676	PPCODE:
1662	{	1677	{
1663	dREQ;	1678	eio_wd wd2 = 0;
1664
1665	req->type = REQ_MKDIR;
1666	req->sv1 = newSVsv (pathname);
1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
1668	req->mode = mode;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675	ALIAS:
1676	aio_link = REQ_LINK
1677	aio_symlink = REQ_SYMLINK
1678	aio_rename = REQ_RENAME
1679	PPCODE:
1680	{
1681	dREQ;	1679	dREQ;
1682		1680
1683	req->type = ix;	1681	req->type = ix;
1684	req->sv2 = newSVsv (oldpath);	1682	req_set_path1 (req, oldpath);
1685	req->ptr2 = SvPVbyte_nolen (req->sv2);	1683	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1686	req->sv1 = newSVsv (newpath);	1684	req->int3 = (long)wd2;
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688		1685
1689	REQ_SEND;	1686	REQ_SEND;
1690	}	1687	}
1691		1688
1692	void	1689	void
1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1690	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1694	PPCODE:	1691	PPCODE:
1695	{	1692	{
		1693	eio_wd wd2 = 0;
1696	dREQ;	1694	dREQ;
1697		1695
1698	req->type = REQ_MKNOD;	1696	req->type = EIO_RENAME;
1699	req->sv1 = newSVsv (pathname);	1697	req_set_path1 (req, oldpath);
1700	req->ptr1 = SvPVbyte_nolen (req->sv1);	1698	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1701	req->mode = (mode_t)mode;	1699	req->int2 = flags;
1702	req->offs = dev;	1700	req->int3 = (long)wd2;
1703		1701
1704	REQ_SEND;	1702	REQ_SEND;
1705	}	1703	}
1706		1704
1707	void	1705	void
1708	aio_busy (double delay, SV *callback=&PL_sv_undef)	1706	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1709	PPCODE:	1707	PPCODE:
1710	{	1708	{
1711	dREQ;	1709	dREQ;
		1710
		1711	req->type = EIO_MKNOD;
		1712	req->int2 = (mode_t)mode;
		1713	req->offs = dev;
		1714	req_set_path1 (req, pathname);
		1715
		1716	REQ_SEND;
		1717	}
1712		1718
		1719	void
		1720	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1721	ALIAS:
		1722	aio_mtouch = EIO_MTOUCH
		1723	aio_msync = EIO_MSYNC
		1724	PPCODE:
		1725	{
		1726	STRLEN svlen;
		1727	char *svptr = SvPVbyte (data, svlen);
		1728	UV len = SvUV (length);
		1729
		1730	if (flags < 0)
		1731	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1732
		1733	if (offset < 0)
		1734	offset += svlen;
		1735
		1736	if (offset < 0 || offset > svlen)
		1737	croak ("offset outside of scalar");
		1738
		1739	if (!SvOK (length) || len + offset > svlen)
		1740	len = svlen - offset;
		1741
		1742	{
		1743	dREQ;
		1744
		1745	req->type = ix;
		1746	req->sv2 = SvREFCNT_inc (data);
		1747	req->ptr2 = (char *)svptr + offset;
		1748	req->size = len;
		1749	req->int1 = flags;
		1750
		1751	REQ_SEND;
		1752	}
		1753	}
		1754
		1755	void
		1756	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1757	PPCODE:
		1758	{
		1759	STRLEN svlen;
		1760	char *svptr = SvPVbyte (data, svlen);
		1761	UV len = SvUV (length);
		1762
		1763	if (offset < 0)
		1764	offset += svlen;
		1765
		1766	if (offset < 0 || offset > svlen)
		1767	croak ("offset outside of scalar");
		1768
		1769	if (!SvOK (length) || len + offset > svlen)
		1770	len = svlen - offset;
		1771
		1772	{
		1773	dREQ;
		1774
		1775	req->type = EIO_MLOCK;
		1776	req->sv2 = SvREFCNT_inc (data);
		1777	req->ptr2 = (char *)svptr + offset;
		1778	req->size = len;
		1779
		1780	REQ_SEND;
		1781	}
		1782	}
		1783
		1784	void
		1785	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1786	PPCODE:
		1787	{
		1788	dREQ;
		1789
		1790	req->type = EIO_MLOCKALL;
		1791	req->int1 = flags;
		1792
		1793	REQ_SEND;
		1794	}
		1795
		1796	void
		1797	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1798	PPCODE:
		1799	{
		1800	int fd = s_fileno_croak (fh, 0);
		1801	dREQ;
		1802
		1803	req->type = EIO_CUSTOM;
		1804	req->sv1 = newSVsv (fh);
		1805	req->int1 = fd;
		1806
		1807	req->feed = fiemap;
		1808	#if HAVE_FIEMAP
		1809	/* keep our fingers crossed that the next two types are 64 bit */
		1810	req->offs = start;
		1811	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1812	req->int2 = flags;
		1813	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1814	#endif
		1815
		1816	REQ_SEND;
		1817	}
		1818
		1819	void
		1820	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1821	PPCODE:
		1822	{
		1823	char *svptr = 0;
		1824
		1825	sv_clear_foreign (data);
		1826
		1827	if (length) /* known length, directly read into scalar */
		1828	{
		1829	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1830	svptr = sv_grow (data, length + 1);
		1831	else if (SvCUR (data) < length)
		1832	croak ("length outside of scalar, and cannot grow");
		1833	else
		1834	svptr = SvPVbyte_nolen (data);
		1835	}
		1836
		1837	{
		1838	dREQ;
		1839
		1840	req->type = EIO_SLURP;
		1841	req_set_path1 (req, pathname);
		1842	req->offs = offset;
		1843	req->size = length;
		1844	req->sv2 = SvREFCNT_inc (data);
		1845	req->ptr2 = svptr;
		1846
		1847	if (!SvREADONLY (data))
		1848	{
		1849	SvREADONLY_on (data);
		1850	req->flags |= FLAG_SV2_RO_OFF;
		1851	}
		1852
		1853	REQ_SEND;
		1854	}
		1855	}
		1856
		1857	void
		1858	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1859	PPCODE:
		1860	{
		1861	dREQ;
		1862
1713	req->type = REQ_BUSY;	1863	req->type = EIO_BUSY;
1714	req->nv1 = delay < 0. ? 0. : delay;	1864	req->nv1 = delay < 0. ? 0. : delay;
1715		1865
1716	REQ_SEND;	1866	REQ_SEND;
1717	}	1867	}
1718		1868
1719	void	1869	void
1720	aio_group (SV *callback=&PL_sv_undef)	1870	aio_group (SV *callback = &PL_sv_undef)
1721	PROTOTYPE: ;$
1722	PPCODE:	1871	PPCODE:
1723	{	1872	{
1724	dREQ;	1873	dREQ;
1725		1874
1726	req->type = REQ_GROUP;	1875	req->type = EIO_GROUP;
1727		1876
		1877	PUTBACK;
1728	req_send (req);	1878	req_submit (req);
		1879	SPAGAIN;
		1880
1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1881	XPUSHs (req_sv (req, aio_grp_stash));
1730	}	1882	}
1731		1883
1732	void	1884	void
1733	aio_nop (SV *callback=&PL_sv_undef)	1885	aio_nop (SV *callback = &PL_sv_undef)
		1886	ALIAS:
		1887	aio_nop = EIO_NOP
		1888	aio_sync = EIO_SYNC
1734	PPCODE:	1889	PPCODE:
1735	{	1890	{
1736	dREQ;	1891	dREQ;
1737		1892
1738	req->type = REQ_NOP;	1893	req->type = ix;
1739		1894
1740	REQ_SEND;	1895	REQ_SEND;
1741	}	1896	}
1742		1897
1743	int	1898	int
1744	aioreq_pri (int pri = 0)	1899	aioreq_pri (int pri = NO_INIT)
1745	PROTOTYPE: ;$
1746	CODE:	1900	CODE:
1747	RETVAL = next_pri - PRI_BIAS;	1901	RETVAL = next_pri;
1748	if (items > 0)	1902	if (items > 0)
1749	{	1903	{
1750	if (pri < PRI_MIN) pri = PRI_MIN;	1904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751	if (pri > PRI_MAX) pri = PRI_MAX;	1905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752	next_pri = pri + PRI_BIAS;	1906	next_pri = pri;
1753	}	1907	}
1754	OUTPUT:	1908	OUTPUT:
1755	RETVAL	1909	RETVAL
1756		1910
1757	void	1911	void
1758	aioreq_nice (int nice = 0)	1912	aioreq_nice (int nice = 0)
1759	CODE:	1913	CODE:
1760	nice = next_pri - nice;	1914	nice = next_pri - nice;
1761	if (nice < PRI_MIN) nice = PRI_MIN;	1915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762	if (nice > PRI_MAX) nice = PRI_MAX;	1916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763	next_pri = nice + PRI_BIAS;	1917	next_pri = nice;
1764		1918
1765	void	1919	void
1766	flush ()	1920	flush ()
1767	PROTOTYPE:
1768	CODE:	1921	CODE:
1769	while (nreqs)	1922	while (eio_nreqs ())
1770	{	1923	{
1771	poll_wait ();	1924	poll_wait ();
1772	poll_cb ();	1925	poll_cb ();
1773	}	1926	}
1774		1927
1775	int	1928	int
1776	poll()	1929	poll ()
1777	PROTOTYPE:
1778	CODE:	1930	CODE:
1779	poll_wait ();	1931	poll_wait ();
1780	RETVAL = poll_cb ();	1932	RETVAL = poll_cb ();
1781	OUTPUT:	1933	OUTPUT:
1782	RETVAL	1934	RETVAL
1783		1935
1784	int	1936	int
1785	poll_fileno()	1937	poll_fileno ()
1786	PROTOTYPE:
1787	CODE:	1938	CODE:
1788	RETVAL = respipe [0];	1939	RETVAL = s_epipe_fd (&respipe);
1789	OUTPUT:	1940	OUTPUT:
1790	RETVAL	1941	RETVAL
1791		1942
1792	int	1943	int
1793	poll_cb(...)	1944	poll_cb (...)
1794	PROTOTYPE:	1945	PROTOTYPE:
1795	CODE:	1946	CODE:
1796	RETVAL = poll_cb ();	1947	RETVAL = poll_cb ();
1797	OUTPUT:	1948	OUTPUT:
1798	RETVAL	1949	RETVAL
1799		1950
1800	void	1951	void
1801	poll_wait()	1952	poll_wait ()
1802	PROTOTYPE:
1803	CODE:	1953	CODE:
1804	poll_wait ();	1954	poll_wait ();
1805		1955
1806	void
1807	setsig (int signum = SIGIO)
1808	PROTOTYPE: ;$
1809	CODE:
1810	{
1811	if (block_sig_level)
1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814	LOCK (reslock);
1815	main_tid = pthread_self ();
1816	main_sig = signum;
1817	UNLOCK (reslock);
1818
1819	if (main_sig && npending)
1820	pthread_kill (main_tid, main_sig);
1821	}
1822
1823	void
1824	aio_block (SV *cb)
1825	PROTOTYPE: &
1826	PPCODE:
1827	{
1828	int count;
1829
1830	block_sig ();
1831	PUSHMARK (SP);
1832	PUTBACK;
1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834	SPAGAIN;
1835	unblock_sig ();
1836
1837	if (SvTRUE (ERRSV))
1838	croak (0);
1839
1840	XSRETURN (count);
1841	}
1842
1843	int	1956	int
1844	nreqs()	1957	nreqs ()
1845	PROTOTYPE:
1846	CODE:	1958	CODE:
1847	RETVAL = nreqs;	1959	RETVAL = eio_nreqs ();
1848	OUTPUT:	1960	OUTPUT:
1849	RETVAL	1961	RETVAL
1850		1962
1851	int	1963	int
1852	nready()	1964	nready ()
1853	PROTOTYPE:
1854	CODE:	1965	CODE:
1855	RETVAL = get_nready ();	1966	RETVAL = eio_nready ();
1856	OUTPUT:	1967	OUTPUT:
1857	RETVAL	1968	RETVAL
1858		1969
1859	int	1970	int
1860	npending()	1971	npending ()
1861	PROTOTYPE:
1862	CODE:	1972	CODE:
1863	RETVAL = get_npending ();	1973	RETVAL = eio_npending ();
1864	OUTPUT:	1974	OUTPUT:
1865	RETVAL	1975	RETVAL
1866		1976
1867	int	1977	int
1868	nthreads()	1978	nthreads ()
1869	PROTOTYPE:
1870	CODE:	1979	CODE:
1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1980	RETVAL = eio_nthreads ();
1872	RETVAL = started;
1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874	OUTPUT:	1981	OUTPUT:
1875	RETVAL	1982	RETVAL
1876		1983
		1984	int
		1985	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1986	CODE:
		1987	RETVAL = posix_fadvise (fh, offset, length, advice);
		1988	OUTPUT:
		1989	RETVAL
		1990
		1991	IV
		1992	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1993	CODE:
		1994	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1995	OUTPUT:
		1996	RETVAL
		1997
		1998	void
		1999	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2000	PPCODE:
		2001	sv_clear_foreign (scalar);
		2002	{
		2003	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2004	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2005	if (addr == (void *)-1)
		2006	XSRETURN_NO;
		2007
		2008	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2009
		2010	if (!(prot & PROT_WRITE))
		2011	SvREADONLY_on (scalar);
		2012
		2013	XSRETURN_YES;
		2014	}
		2015
		2016	void
		2017	munmap (SV *scalar)
		2018	CODE:
		2019	sv_clear_foreign (scalar);
		2020
		2021	int
		2022	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2023	ALIAS:
		2024	mprotect = 1
		2025	CODE:
		2026	{
		2027	STRLEN svlen;
		2028	void *addr = SvPVbyte (scalar, svlen);
		2029	STRLEN len = SvUV (length);
		2030
		2031	if (offset < 0)
		2032	offset += svlen;
		2033
		2034	if (offset < 0 || offset > svlen)
		2035	croak ("offset outside of scalar");
		2036
		2037	if (!SvOK (length) || len + offset > svlen)
		2038	len = svlen - offset;
		2039
		2040	addr = (void *)(((intptr_t)addr) + offset);
		2041	eio_page_align (&addr, &len);
		2042
		2043	switch (ix)
		2044	{
		2045	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2046	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2047	}
		2048	}
		2049	OUTPUT:
		2050	RETVAL
		2051
		2052	int
		2053	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2054	CODE:
		2055	{
		2056	STRLEN svlen;
		2057	void *addr = SvPVbyte (scalar, svlen);
		2058	size_t len = SvUV (length);
		2059
		2060	if (offset < 0)
		2061	offset += svlen;
		2062
		2063	if (offset < 0 || offset > svlen)
		2064	croak ("offset outside of scalar");
		2065
		2066	if (!SvOK (length) || len + offset > svlen)
		2067	len = svlen - offset;
		2068
		2069	addr = (void *)(((intptr_t)addr) + offset);
		2070	eio_page_align (&addr, &len);
		2071	#if _POSIX_MEMLOCK_RANGE
		2072	RETVAL = munlock (addr, len);
		2073	#else
		2074	RETVAL = EIO_ENOSYS ();
		2075	#endif
		2076	}
		2077	OUTPUT:
		2078	RETVAL
		2079
		2080	int
		2081	munlockall ()
		2082	CODE:
		2083	#if _POSIX_MEMLOCK
		2084	munlockall ();
		2085	#else
		2086	RETVAL = EIO_ENOSYS ();
		2087	#endif
		2088	OUTPUT:
		2089	RETVAL
		2090
		2091	int
		2092	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2093	CODE:
		2094	{
		2095	#if HAVE_LINUX_SPLICE
		2096	loff_t off_in_, off_out_;
		2097	RETVAL = splice (
		2098	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2099	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2100	length, flags
		2101	);
		2102	#else
		2103	RETVAL = EIO_ENOSYS ();
		2104	#endif
		2105	}
		2106	OUTPUT:
		2107	RETVAL
		2108
		2109	int
		2110	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2111	CODE:
		2112	#if HAVE_LINUX_SPLICE
		2113	RETVAL = tee (rfh, wfh, length, flags);
		2114	#else
		2115	RETVAL = EIO_ENOSYS ();
		2116	#endif
		2117	OUTPUT:
		2118	RETVAL
		2119
		2120	int
		2121	pipesize (aio_rfd rfh, int new_size = -1)
		2122	PROTOTYPE: $;$
		2123	CODE:
		2124	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2125	if (new_size >= 0)
		2126	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2127	else
		2128	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2129	#else
		2130	errno = ENOSYS;
		2131	RETVAL = -1;
		2132	#endif
		2133	OUTPUT:
		2134	RETVAL
		2135
		2136	void
		2137	pipe2 (int flags = 0)
		2138	PROTOTYPE: ;$
		2139	PPCODE:
		2140	{
		2141	int fd[2];
		2142	int res;
		2143
		2144	if (flags)
		2145	#if HAVE_PIPE2
		2146	res = pipe2 (fd, flags);
		2147	#else
		2148	res = (errno = ENOSYS, -1);
		2149	#endif
		2150	else
		2151	res = pipe (fd);
		2152
		2153	if (!res)
		2154	{
		2155	EXTEND (SP, 2);
		2156	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2157	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2158	}
		2159	}
		2160
		2161	UV
		2162	get_fdlimit ()
		2163	CODE:
		2164	#if HAVE_RLIMITS
		2165	struct rlimit rl;
		2166	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2167	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2168	#endif
		2169	XSRETURN_UNDEF;
		2170	OUTPUT:
		2171	RETVAL
		2172
		2173	void
		2174	min_fdlimit (UV limit = 0x7fffffffU)
		2175	CODE:
		2176	{
		2177	#if HAVE_RLIMITS
		2178	struct rlimit rl;
		2179	rlim_t orig_rlim_max;
		2180	UV bit;
		2181
		2182	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2183	goto fail;
		2184
		2185	if (rl.rlim_cur == RLIM_INFINITY)
		2186	XSRETURN_YES;
		2187
		2188	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2189
		2190	if (rl.rlim_cur < limit)
		2191	{
		2192	rl.rlim_cur = limit;
		2193
		2194	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2195	rl.rlim_max = rl.rlim_cur;
		2196	}
		2197
		2198	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2199	XSRETURN_YES;
		2200
		2201	if (errno == EPERM)
		2202	{
		2203	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2204	/* our limit overflows a system-wide limit */
		2205	/* try an adaptive algorithm, but do not lower the hardlimit */
		2206	rl.rlim_max = 0;
		2207	for (bit = 0x40000000U; bit; bit >>= 1)
		2208	{
		2209	rl.rlim_max |= bit;
		2210	rl.rlim_cur = rl.rlim_max;
		2211
		2212	/* nevr decrease the hard limit */
		2213	if (rl.rlim_max < orig_rlim_max)
		2214	break;
		2215
		2216	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2217	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2218	}
		2219
		2220	/* now, raise the soft limit to the max permitted */
		2221	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2222	{
		2223	rl.rlim_cur = rl.rlim_max;
		2224	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2225	errno = EPERM;
		2226	}
		2227	}
		2228	#endif
		2229	fail:
		2230	XSRETURN_UNDEF;
		2231	}
		2232
		2233	void _on_next_submit (SV *cb)
		2234	CODE:
		2235	SvREFCNT_dec (on_next_submit);
		2236	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2237
1877	PROTOTYPES: DISABLE	2238	PROTOTYPES: DISABLE
		2239
		2240	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2241
		2242	BOOT:
		2243	{
		2244	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2245	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2246	}
		2247
		2248	void
		2249	DESTROY (SV *self)
		2250	CODE:
		2251	{
		2252	aio_wd wd = SvAIO_WD (self);
		2253	#if HAVE_AT
		2254	{
		2255	SV *callback = &PL_sv_undef;
		2256	dREQ; /* clobbers next_pri :/ */
		2257	next_pri = req->pri; /* restore next_pri */
		2258	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2259	req->type = EIO_WD_CLOSE;
		2260	req->wd = wd;
		2261	REQ_SEND;
		2262	}
		2263	#else
		2264	eio_wd_close_sync (wd);
		2265	#endif
		2266	}
1878		2267
1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2268	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880		2269
1881	void	2270	void
1882	cancel (aio_req_ornot req)	2271	cancel (aio_req_ornot req)
1883	CODE:	2272	CODE:
1884	req_cancel (req);	2273	eio_cancel (req);
1885		2274
1886	void	2275	void
1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2276	cb (aio_req_ornot req, SV *callback = NO_INIT)
1888	CODE:	2277	PPCODE:
		2278	{
		2279	if (GIMME_V != G_VOID)
		2280	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2281
		2282	if (items > 1)
		2283	{
		2284	SV *cb_cv = get_cb (callback);
		2285
1889	SvREFCNT_dec (req->callback);	2286	SvREFCNT_dec (req->callback);
1890	req->callback = newSVsv (callback);	2287	req->callback = SvREFCNT_inc (cb_cv);
		2288	}
		2289	}
1891		2290
1892	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2291	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893		2292
1894	void	2293	void
1895	add (aio_req grp, ...)	2294	add (aio_req grp, ...)
1896	PPCODE:	2295	PPCODE:
1897	{	2296	{
1898	int i;	2297	int i;
1899	aio_req req;
1900
1901	if (main_sig && !block_sig_level)
1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903		2298
1904	if (grp->int1 == 2)	2299	if (grp->int1 == 2)
1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2300	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906		2301
1907	for (i = 1; i < items; ++i )	2302	for (i = 1; i < items; ++i )
1908	{	2303	{
		2304	aio_req req;
		2305
1909	if (GIMME_V != G_VOID)	2306	if (GIMME_V != G_VOID)
1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2307	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911		2308
1912	req = SvAIO_REQ (ST (i));	2309	req = SvAIO_REQ (ST (i));
1913		2310
1914	if (req)	2311	if (req)
1915	{	2312	eio_grp_add (grp, req);
1916	++grp->size;
1917	req->grp = grp;
1918
1919	req->grp_prev = 0;
1920	req->grp_next = grp->grp_first;
1921
1922	if (grp->grp_first)
1923	grp->grp_first->grp_prev = req;
1924
1925	grp->grp_first = req;
1926	}
1927	}	2313	}
1928	}	2314	}
1929		2315
1930	void	2316	void
1931	cancel_subs (aio_req_ornot req)	2317	cancel_subs (aio_req_ornot req)
…		…
1940	AV *av;	2326	AV *av;
1941		2327
1942	grp->errorno = errno;	2328	grp->errorno = errno;
1943		2329
1944	av = newAV ();	2330	av = newAV ();
		2331	av_extend (av, items - 1);
1945		2332
1946	for (i = 1; i < items; ++i )	2333	for (i = 1; i < items; ++i )
1947	av_push (av, newSVsv (ST (i)));	2334	av_push (av, newSVsv (ST (i)));
1948		2335
1949	SvREFCNT_dec (grp->sv1);	2336	SvREFCNT_dec (grp->sv1);
…		…
1956	grp->errorno = errorno;	2343	grp->errorno = errorno;
1957		2344
1958	void	2345	void
1959	limit (aio_req grp, int limit)	2346	limit (aio_req grp, int limit)
1960	CODE:	2347	CODE:
1961	grp->int2 = limit;	2348	eio_grp_limit (grp, limit);
1962	aio_grp_feed (grp);
1963		2349
1964	void	2350	void
1965	feed (aio_req grp, SV *callback=&PL_sv_undef)	2351	feed (aio_req grp, SV *callback = &PL_sv_undef)
1966	CODE:	2352	CODE:
1967	{	2353	{
1968	SvREFCNT_dec (grp->sv2);	2354	SvREFCNT_dec (grp->sv2);
1969	grp->sv2 = newSVsv (callback);	2355	grp->sv2 = newSVsv (callback);
		2356	grp->feed = aio_grp_feed;
1970		2357
1971	if (grp->int2 <= 0)	2358	if (grp->int2 <= 0)
1972	grp->int2 = 2;	2359	grp->int2 = 2;
1973		2360
1974	aio_grp_feed (grp);	2361	eio_grp_limit (grp, grp->int2);
1975	}	2362	}
1976		2363

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