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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.101 by root, Fri Jun 1 13:25:51 2007 UTC vs.
Revision 1.259 by root, Sun Jul 22 20:39:19 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	#if !defined mg_findext
		10	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		11	#endif
10		12
11	#include <stddef.h>	13	#include <stddef.h>
12	#include <stdlib.h>	14	#include <stdlib.h>
13	#include <errno.h>	15	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	16	#include <sys/types.h>
17	#include <sys/stat.h>	17	#include <sys/stat.h>
18	#include <limits.h>	18	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	19	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	20	#include <sched.h>
		21
		22	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		23	# include <sys/mman.h>
		24	#endif
		25
		26	/* the incompetent fool that created musl keeps __linux__, refuses
		27	* to implement any linux standard apis, and also has no way to test
		28	* for his broken iplementation. don't complain to me if this fails
		29	* for you.
		30	*/
		31	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		32	# include <linux/fs.h>
		33	# ifdef FS_IOC_FIEMAP
		34	# include <linux/types.h>
		35	# include <linux/fiemap.h>
		36	# define HAVE_FIEMAP 1
		37	# endif
		38	#endif
		39
		40	/* perl namespace pollution */
		41	#undef VERSION
		42
		43	/* perl stupidly overrides readdir and maybe others */
		44	/* with thread-unsafe versions, imagine that :( */
		45	#undef readdir
		46	#undef opendir
		47	#undef closedir
		48
		49	#ifdef _WIN32
		50
		51	// perl overrides all those nice libc functions
		52
		53	#undef malloc
		54	#undef free
		55	#undef open
		56	#undef read
		57	#undef write
		58	#undef send
		59	#undef recv
		60	#undef stat
		61	#undef lstat
		62	#undef fstat
		63	#undef truncate
		64	#undef ftruncate
		65	#undef open
		66	#undef link
		67	#undef close
		68	#undef unlink
		69	#undef mkdir
		70	#undef rmdir
		71	#undef rename
		72	#undef lseek
		73	#undef opendir
		74	#undef readdir
		75	#undef closedir
		76	#undef chmod
		77	#undef fchmod
		78	#undef dup
		79	#undef dup2
		80	#undef abort
		81	#undef pipe
		82
		83	#define EIO_STRUCT_STAT struct _stati64
		84	#define EIO_STRUCT_STATI64
		85
		86	#else
		87
		88	#include <sys/time.h>
		89	#include <sys/select.h>
		90	#include <unistd.h>
23	#include <utime.h>	91	#include <utime.h>
		92	#include <signal.h>
24		93
25	#if HAVE_SENDFILE	94	#define EIO_STRUCT_STAT Stat_t
26	# if __linux	95
		96	#endif
		97
		98	/*****************************************************************************/
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	#else
		103	# define expect(expr,value) (expr)
		104	#endif
		105
		106	#define expect_false(expr) expect ((expr) != 0, 0)
		107	#define expect_true(expr) expect ((expr) != 0, 1)
		108
		109	/*****************************************************************************/
		110
		111	#include "libeio/config.h"
		112
		113	#include "schmorp.h"
		114
		115	#if HAVE_EVENTFD
27	# include <sys/sendfile.h>	116	# include <sys/eventfd.h>
28	# elif __freebsd	117	#endif
29	# include <sys/socket.h>	118
		119	#if HAVE_TIMERFD
30	# include <sys/uio.h>	120	# include <sys/timerfd.h>
31	# elif __hpux	121	#endif
		122
		123	#if HAVE_RLIMITS
		124	#include <sys/time.h>
32	# include <sys/socket.h>	125	#include <sys/resource.h>
33	# elif __solaris /* not yet */	126	#endif
34	# include <sys/sendfile.h>	127
		128	typedef SV SV8; /* byte-sv, used for argument-checking */
		129	typedef int aio_rfd; /* read file desriptor */
		130	typedef int aio_wfd; /* write file descriptor */
		131
		132	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		133
		134	#define EIO_REQ_MEMBERS \
		135	SV *callback; \
		136	SV *sv1, *sv2; \
		137	SV *sv3, *sv4; \
		138	STRLEN stroffset; \
		139	SV *self;
		140
		141	#define EIO_NO_WRAPPERS 1
		142
		143	#include "libeio/eio.h"
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
		149
		150	#include "libeio/eio.c"
		151
		152	#if !HAVE_POSIX_FADVISE
		153	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		154	#endif
		155
		156	#if !HAVE_POSIX_MADVISE
		157	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		158	#endif
		159
		160	#ifndef MAP_ANONYMOUS
		161	# ifdef MAP_ANON
		162	# define MAP_ANONYMOUS MAP_ANON
35	# else	163	# else
36	# error sendfile support requested but not available	164	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	165	# endif
38	#endif	166	#endif
39		167
40	/* number of seconds after which idle threads exit */	168	/* defines all sorts of constants to 0 unless they are already defined */
41	#define IDLE_TIMEOUT 10	169	/* also provides const_iv_ and const_niv_ macros for them */
		170	#include "def0.h"
42		171
43	/* used for struct dirent, AIX doesn't provide it */	172	#ifndef makedev
44	#ifndef NAME_MAX	173	# define makedev(maj,min) (((maj) << 8) | (min))
45	# define NAME_MAX 4096
46	#endif	174	#endif
47		175	#ifndef major
48	/* buffer size for various temporary buffers */	176	# 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	177	#endif
		178	#ifndef minor
		179	# define minor(dev) ((dev) & 0xff)
		180	#endif
57		181
58	#define dBUF \	182	#if PAGESIZE <= 0
59	char *aio_buf; \	183	# define PAGESIZE sysconf (_SC_PAGESIZE)
60	LOCK (wrklock); \	184	#endif
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	185
62	UNLOCK (wrklock); \	186	/*****************************************************************************/
63	if (!aio_buf) \	187
		188	#if !_POSIX_MAPPED_FILES
		189	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		190	# define munmap(addr,length) EIO_ENOSYS ()
		191	#endif
		192
		193	#if !_POSIX_MEMORY_PROTECTION
		194	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		195	#endif
		196
		197	#if !MREMAP_MAYMOVE
		198	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		199	#endif
		200
		201	#define FOREIGN_MAGIC PERL_MAGIC_ext
		202
		203	static int ecb_cold
		204	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		205	{
		206	int old_errno = errno;
		207	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		208	errno = old_errno;
		209
		210	mg->mg_obj = 0; /* just in case */
		211
		212	SvREADONLY_off (sv);
		213
		214	if (SvPVX (sv) != mg->mg_ptr)
		215	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		216
		217	SvCUR_set (sv, 0);
		218	SvPVX (sv) = 0;
		219	SvOK_off (sv);
		220
64	return -1;	221	return 0;
		222	}
65		223
66	typedef SV SV8; /* byte-sv, used for argument-checking */	224	static MGVTBL mmap_vtbl = {
67		225	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	};	226	};
84		227
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	228	static int ecb_cold
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	229	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88	typedef struct aio_cb
89	{	230	{
90	struct aio_cb *volatile next;	231	free (mg->mg_ptr);
		232	mg->mg_obj = 0; /* just in case */
91		233
92	SV *callback;	234	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		235
100	STRLEN stroffset;	236	if (SvPVX (sv) != mg->mg_ptr)
101	int type;	237	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		238
106	unsigned char flags;	239	SvCUR_set (sv, 0);
107	unsigned char pri;	240	SvPVX (sv) = 0;
		241	SvOK_off (sv);
108		242
109	SV *self; /* the perl counterpart of this request, if any */	243	return 0;
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	244	}
111	} aio_cb;
112		245
113	enum {	246	static MGVTBL sysfree_vtbl = {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */	247	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	};	248	};
118		249
119	typedef aio_cb *aio_req;	250	/*****************************************************************************/
120	typedef aio_cb *aio_req_ornot;
121		251
122	enum {	252	/* helper: set scalar to foreign ptr with custom free */
123	PRI_MIN = -4,	253	static void
124	PRI_MAX = 4,	254	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	{	255	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	256	sv_force_normal (sv);
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142		257
143	static thread_t main_tid;	258	/* we store the length in mg_obj, as namlen is I32 :/ */
144	static int main_sig;	259	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
145	static int block_sig_level;	260	->mg_obj = (SV *)length;
146		261
147	void block_sig ()	262	SvUPGRADE (sv, SVt_PV); /* nop... */
148	{
149	sigset_t ss;
150		263
151	if (block_sig_level++)	264	if (SvLEN (sv))
		265	Safefree (SvPVX (sv));
		266
		267	SvPVX (sv) = (char *)addr;
		268	SvCUR_set (sv, length);
		269	SvLEN_set (sv, 0);
		270	SvPOK_only (sv);
		271	}
		272
		273	static void
		274	sv_clear_foreign (SV *sv)
		275	{
		276	/* todo: iterate over magic and only free ours, but of course */
		277	/* the perl5porters will call that (correct) behaviour buggy */
		278	sv_unmagic (sv, FOREIGN_MAGIC);
		279	}
		280
		281	/*****************************************************************************/
		282
		283	static void
		284	fiemap (eio_req *req)
		285	{
		286	req->result = -1;
		287
		288	#if HAVE_FIEMAP
		289	/* assume some c99 */
		290	struct fiemap *fiemap = 0;
		291	size_t end_offset;
		292	int count = req->int3;
		293
		294	req->flags |= EIO_FLAG_PTR1_FREE;
		295
		296	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		297	/* increase in 3.5kb steps */
		298	if (count < 0)
		299	count = 8;
		300
		301	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		302	errno = ENOMEM;
		303	if (!fiemap)
152	return;	304	return;
153		305
154	if (!main_sig)	306	req->ptr1 = fiemap;
		307
		308	fiemap->fm_start = req->offs;
		309	fiemap->fm_length = req->size;
		310	fiemap->fm_flags = req->int2;
		311	fiemap->fm_extent_count = count;
		312
		313	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
155	return;	314	return;
156		315
157	sigemptyset (&ss);	316	if (req->int3 >= 0 /* not autosizing */
158	sigaddset (&ss, main_sig);	317	|| !fiemap->fm_mapped_extents /* no more extents */
159	pthread_sigmask (SIG_BLOCK, &ss, 0);	318	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160	}	319	goto done;
161		320
162	void unblock_sig ()	321	/* else we have to loop -
163	{	322	* it would be tempting (actually I tried that first) to just query the
164	sigset_t ss;	323	* number of extents needed, but linux often feels like not returning all
		324	* extents, without telling us it left any out. this complicates
		325	* this quite a bit.
		326	*/
165		327
166	if (--block_sig_level)	328	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167	return;
168		329
169	if (!main_sig)	330	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	{	331	{
202	closedir (wrk->dirp);	332	/* 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;	333	char scratch[3072];
204	}	334	struct fiemap *incmap = (struct fiemap *)scratch;
205		335
206	if (wrk->dbuf)	336	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207	{	337	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208	free (wrk->dbuf);	338	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209	wrk->dbuf = 0;	339	incmap->fm_flags = fiemap->fm_flags;
210	}	340	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211	}
212		341
213	static void worker_free (worker *wrk)	342	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;	343	return;
308		344
309	--q->size;	345	if (!incmap->fm_mapped_extents)
		346	goto done;
310		347
311	for (pri = NUM_PRI; pri--; )	348	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
312	{	349	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
313	aio_req req = q->qs[pri];	350	errno = ENOMEM;
314
315	if (req)	351	if (!fiemap)
		352	return;
		353
		354	req->ptr1 = fiemap;
		355
		356	for (count = 0; count < incmap->fm_mapped_extents; ++count)
316	{	357	{
317	if (!(q->qs[pri] = req->next))	358	struct fiemap_extent *e = incmap->fm_extents + count;
318	q->qe[pri] = 0;
319		359
320	return req;	360	if (e->fe_logical + e->fe_length >= end_offset)
		361	goto done;
		362
		363	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		364
		365	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		366	goto done;
		367
321	}	368	}
322	}	369	}
323		370
324	abort ();	371	done:
325	}	372	req->result = 0;
326		373
327	static int poll_cb ();	374	#else
328	static int req_invoke (aio_req req);	375	errno = ENOSYS;
		376	#endif
		377	}
		378
		379	/*****************************************************************************/
		380
		381	enum {
		382	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		383	};
		384
		385	typedef eio_req *aio_req;
		386	typedef eio_req *aio_req_ornot;
		387	typedef eio_wd aio_wd;
		388
		389	static SV *on_next_submit;
		390	static int next_pri = EIO_PRI_DEFAULT;
		391	static int max_outstanding;
		392
		393	static s_epipe respipe;
		394
329	static void req_destroy (aio_req req);	395	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	396	static void req_cancel (aio_req req);
331		397
		398	static void
		399	want_poll (void)
		400	{
		401	/* write a dummy byte to the pipe so fh becomes ready */
		402	s_epipe_signal (&respipe);
		403	}
		404
		405	static void
		406	done_poll (void)
		407	{
		408	/* read any signals sent by the worker threads */
		409	s_epipe_drain (&respipe);
		410	}
		411
332	/* must be called at most once */	412	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	413	static SV *
		414	req_sv (aio_req req, HV *stash)
334	{	415	{
335	if (!req->self)	416	if (!req->self)
336	{	417	{
337	req->self = (SV *)newHV ();	418	req->self = (SV *)newHV ();
338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	419	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339	}	420	}
340		421
341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	422	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342	}	423	}
343		424
344	static aio_req SvAIO_REQ (SV *sv)	425	static SV *
		426	newSVaio_wd (aio_wd wd)
		427	{
		428	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		429	}
		430
		431	static aio_req
		432	SvAIO_REQ (SV *sv)
345	{	433	{
346	MAGIC *mg;	434	MAGIC *mg;
347		435
348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	436	if (!SvROK (sv)
		437	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		438	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		439	&& SvSTASH (SvRV (sv)) != aio_req_stash
		440	&& !sv_derived_from (sv, "IO::AIO::REQ")))
349	croak ("object of class " AIO_REQ_KLASS " expected");	441	croak ("object of class IO::AIO::REQ expected");
350		442
351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	443	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352		444
353	return mg ? (aio_req)mg->mg_ptr : 0;	445	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	446	}
355		447
		448	static aio_wd
		449	SvAIO_WD (SV *sv)
		450	{
		451	if (!SvROK (sv)
		452	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		453	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		454	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		455
		456	return (aio_wd)(long)SvIVX (SvRV (sv));
		457	}
		458
		459	static SV *
		460	newmortalFH (int fd, int flags)
		461	{
		462	if (fd < 0)
		463	return &PL_sv_undef;
		464
		465	GV *gv = (GV *)sv_newmortal ();
		466	char sym[64];
		467	int symlen;
		468
		469	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		470	gv_init (gv, aio_stash, sym, symlen, 0);
		471
		472	symlen = snprintf (
		473	sym,
		474	sizeof (sym),
		475	"%s&=%d",
		476	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		477	fd
		478	);
		479
		480	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		481	? (SV *)gv : &PL_sv_undef;
		482	}
		483
		484	static void
356	static void aio_grp_feed (aio_req grp)	485	aio_grp_feed (aio_req grp)
357	{	486	{
358	block_sig ();	487	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	488	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	489	dSP;
367		490
368	ENTER;	491	ENTER;
369	SAVETMPS;	492	SAVETMPS;
370	PUSHMARK (SP);	493	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	494	XPUSHs (req_sv (grp, aio_grp_stash));
372	PUTBACK;	495	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	496	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	497	SPAGAIN;
375	FREETMPS;	498	FREETMPS;
376	LEAVE;	499	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	}	500	}
387
388	unblock_sig ();
389	}	501	}
390		502
391	static void aio_grp_dec (aio_req grp)	503	static void
		504	req_submit (eio_req *req)
392	{	505	{
393	--grp->size;	506	eio_submit (req);
394		507
395	/* call feeder, if applicable */	508	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	509	{
401	block_sig ();	510	dSP;
		511	SV *cb = sv_2mortal (on_next_submit);
402		512
403	if (!req_invoke (grp))	513	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		514
410	req_destroy (grp);	515	PUSHMARK (SP);
411	unblock_sig ();	516	PUTBACK;
		517	call_sv (cb, G_DISCARD | G_EVAL);
412	}	518	}
413	}	519	}
414		520
		521	static int
415	static int req_invoke (aio_req req)	522	req_invoke (eio_req *req)
416	{	523	{
417	dSP;
418
419	if (req->flags & FLAG_SV2_RO_OFF)	524	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	525	SvREADONLY_off (req->sv2);
421		526
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	527	if (!EIO_CANCELLED (req) && req->callback)
423	{	528	{
		529	dSP;
		530	static SV *sv_result_cache; /* caches the result integer SV */
		531	SV *sv_result;
		532
424	ENTER;	533	ENTER;
425	SAVETMPS;	534	SAVETMPS;
426	PUSHMARK (SP);	535	PUSHMARK (SP);
427	EXTEND (SP, 1);	536	EXTEND (SP, 1);
428		537
		538	/* do not recreate the result IV from scratch each time */
		539	if (expect_true (sv_result_cache))
		540	{
		541	sv_result = sv_result_cache; sv_result_cache = 0;
		542	SvIV_set (sv_result, req->result);
		543	SvIOK_only (sv_result);
		544	}
		545	else
		546	{
		547	sv_result = newSViv (req->result);
		548	SvREADONLY_on (sv_result);
		549	}
		550
429	switch (req->type)	551	switch (req->type)
430	{	552	{
		553	case EIO_WD_OPEN:
		554	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		555	break;
		556
431	case REQ_READDIR:	557	case EIO_READDIR:
432	{	558	{
433	SV *rv = &PL_sv_undef;	559	SV *rv = &PL_sv_undef;
434		560
435	if (req->result >= 0)	561	if (req->result >= 0)
436	{	562	{
437	int i;	563	int i;
438	char *buf = req->ptr2;	564	char *names = (char *)req->ptr2;
		565	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	566	AV *av = newAV ();
440		567
441	av_extend (av, req->result - 1);	568	av_extend (av, req->result - 1);
442		569
443	for (i = 0; i < req->result; ++i)	570	for (i = 0; i < req->result; ++i)
444	{	571	{
445	SV *sv = newSVpv (buf, 0);	572	if (req->int1 & EIO_READDIR_DENTS)
		573	{
		574	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		575
		576	if (req->int1 & EIO_READDIR_CUSTOM2)
		577	{
		578	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		579	AV *avent = newAV ();
		580
		581	av_extend (avent, 2);
		582
		583	if (!sv_type [ent->type])
		584	{
		585	sv_type [ent->type] = newSViv (ent->type);
		586	SvREADONLY_on (sv_type [ent->type]);
		587	}
		588
		589	av_store (avent, 0, namesv);
		590	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		591	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		592
		593	av_store (av, i, newRV_noinc ((SV *)avent));
		594	}
		595	else
447	av_store (av, i, sv);	596	av_store (av, i, namesv);
		597
		598	++ent;
		599	}
		600	else
		601	{
		602	SV *name = newSVpv (names, 0);
		603	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	604	names += SvCUR (name) + 1;
		605	}
449	}	606	}
450		607
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	608	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	609	}
453		610
454	PUSHs (rv);	611	PUSHs (rv);
		612
		613	if (req->int1 & EIO_READDIR_CUSTOM1)
		614	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	615	}
456	break;	616	break;
457		617
458	case REQ_OPEN:	618	case EIO_OPEN:
		619	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		620	break;
		621
		622	case EIO_STATVFS:
		623	case EIO_FSTATVFS:
459	{	624	{
460	/* convert fd to fh */	625	SV *rv = &PL_sv_undef;
461	SV *fh;	626
		627	#ifndef _WIN32
		628	if (req->result >= 0)
		629	{
		630	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		631	HV *hv = newHV ();
		632	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		633	* chooses to make it a struct.
		634	*/
		635	unsigned long fsid = 0;
		636	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
462		637
463	PUSHs (sv_2mortal (newSViv (req->result)));	638	rv = sv_2mortal (newRV_noinc ((SV *)hv));
464	PUTBACK;
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
466	SPAGAIN;
467		639
468	fh = POPs;	640	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
469	PUSHMARK (SP);	641	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		642	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		643	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		644	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		645	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		646	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		647	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		648	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		649	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		650	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		651	}
		652	#endif
		653
470	XPUSHs (fh);	654	PUSHs (rv);
471	}	655	}
		656
472	break;	657	break;
473		658
474	case REQ_GROUP:	659	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	660	req->int1 = 2; /* mark group as finished */
476		661
477	if (req->sv1)	662	if (req->sv1)
478	{	663	{
479	int i;	664	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	668	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	669	PUSHs (*av_fetch (av, i, 0));
485	}	670	}
486	break;	671	break;
487		672
488	case REQ_NOP:	673	case EIO_NOP:
489	case REQ_BUSY:	674	case EIO_BUSY:
490	break;	675	break;
491		676
492	case REQ_READLINK:	677	case EIO_READLINK:
		678	case EIO_REALPATH:
493	if (req->result > 0)	679	if (req->result > 0)
		680	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		681	break;
		682
		683	case EIO_STAT:
		684	case EIO_LSTAT:
		685	case EIO_FSTAT:
		686	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		687
		688	if (!(PL_laststatval = req->result))
		689	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		690	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		691
		692	PUSHs (sv_result);
		693	break;
		694
		695	case EIO_SEEK:
		696	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		697	break;
		698
		699	case EIO_READ:
		700	{
		701	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		702	*SvEND (req->sv2) = 0;
		703	SvPOK_only (req->sv2);
		704	SvSETMAGIC (req->sv2);
		705	PUSHs (sv_result);
		706	}
		707	break;
		708
		709	case EIO_SLURP:
		710	{
		711	if (req->result >= 0)
		712	{
		713	/* if length was originally not known, we steal the malloc'ed memory */
		714	if (req->flags & EIO_FLAG_PTR2_FREE)
		715	{
		716	req->flags &= ~EIO_FLAG_PTR2_FREE;
		717	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		718	}
		719	else
		720	{
		721	SvCUR_set (req->sv2, req->result);
		722	*SvEND (req->sv2) = 0;
		723	SvPOK_only (req->sv2);
		724	}
		725
		726	SvSETMAGIC (req->sv2);
		727	}
		728
		729	PUSHs (sv_result);
		730	}
		731	break;
		732
		733	case EIO_CUSTOM:
		734	if (req->feed == fiemap)
494	{	735	{
495	SvCUR_set (req->sv2, req->result);	736	#if HAVE_FIEMAP
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);	737	if (!req->result)
		738	{
		739	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		740
		741	if (fiemap->fm_extent_count)
		742	{
		743	AV *av = newAV ();
		744	int i;
		745
		746	while (fiemap->fm_mapped_extents)
		747	{
		748	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		749	AV *ext_av = newAV ();
		750
		751	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		752	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		753	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		754	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		755
		756	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		757	}
		758
		759	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		760	}
		761	else
		762	{
		763	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		764	PUSHs (sv_result);
		765	}
		766	}
		767	#endif
498	}	768	}
		769	else
		770	PUSHs (sv_result);
499	break;	771	break;
500		772
501	case REQ_STAT:	773	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502	case REQ_LSTAT:	774	if (req->result > 0)
503	case REQ_FSTAT:	775	SvIV_set (sv_result, 0);
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	776	/* 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		777
516	default:	778	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	779	PUSHs (sv_result);
518	break;	780	break;
519	}	781	}
520		782
521	errno = req->errorno;	783	errno = req->errorno;
522		784
523	PUTBACK;	785	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	786	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	787	SPAGAIN;
		788
		789	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		790	SvREFCNT_dec (sv_result);
		791	else
		792	sv_result_cache = sv_result;
526		793
527	FREETMPS;	794	FREETMPS;
528	LEAVE;	795	LEAVE;
		796
		797	PUTBACK;
529	}	798	}
530		799
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);	800	return !!SvTRUE (ERRSV);
546	}	801	}
547		802
		803	static void
548	static void req_destroy (aio_req req)	804	req_destroy (aio_req req)
549	{	805	{
550	if (req->self)	806	if (req->self)
551	{	807	{
552	sv_unmagic (req->self, PERL_MAGIC_ext);	808	sv_unmagic (req->self, PERL_MAGIC_ext);
553	SvREFCNT_dec (req->self);	809	SvREFCNT_dec (req->self);
554	}	810	}
555		811
556	SvREFCNT_dec (req->sv1);	812	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	813	SvREFCNT_dec (req->sv2);
		814	SvREFCNT_dec (req->sv3);
		815	SvREFCNT_dec (req->sv4);
558	SvREFCNT_dec (req->callback);	816	SvREFCNT_dec (req->callback);
559		817
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	818	free (req);
564	}	819	}
565		820
		821	static void
566	static void req_cancel_subs (aio_req grp)	822	req_cancel_subs (aio_req grp)
567	{	823	{
568	aio_req sub;
569
570	if (grp->type != REQ_GROUP)	824	if (grp->type != EIO_GROUP)
571	return;	825	return;
572		826
573	SvREFCNT_dec (grp->sv2);	827	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	828	grp->sv2 = 0;
575		829
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	830	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	831	}
579		832
580	static void req_cancel (aio_req req)	833	static void ecb_cold
		834	create_respipe (void)
581	{	835	{
582	req->flags |= FLAG_CANCELLED;	836	if (s_epipe_renew (&respipe))
583		837	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	838	}
586		839
587	static void *aio_proc (void *arg);	840	static void
588		841	poll_wait (void)
589	static void start_thread (void)
590	{	842	{
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)	843	while (eio_nreqs ())
687	{	844	{
688	int size;	845	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	846
		847	X_LOCK (EIO_POOL->reslock);
690	size = res_queue.size;	848	size = EIO_POOL->res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	849	X_UNLOCK (EIO_POOL->reslock);
692		850
693	if (size)	851	if (size)
694	return;	852	return;
695		853
696	maybe_start_thread ();	854	etp_maybe_start_thread (EIO_POOL);
697		855
698	FD_ZERO(&rfd);	856	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	857	}
703	}	858	}
704		859
705	static int poll_cb ()	860	static int
		861	poll_cb (void)
706	{	862	{
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 (;;)	863	for (;;)
720	{	864	{
721	for (;;)	865	int res = eio_poll ();
		866
		867	if (res > 0)
		868	croak (0);
		869
		870	if (!max_outstanding || max_outstanding > eio_nreqs ())
		871	return res;
		872
		873	poll_wait ();
		874	}
		875	}
		876
		877	static void ecb_cold
		878	reinit (void)
		879	{
		880	create_respipe ();
		881
		882	if (eio_init (want_poll, done_poll) < 0)
		883	croak ("IO::AIO: unable to initialise eio library");
		884	}
		885
		886	/*****************************************************************************/
		887
		888	static SV *
		889	get_cb (SV *cb_sv)
		890	{
		891	SvGETMAGIC (cb_sv);
		892	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		893	}
		894
		895	static aio_req ecb_noinline
		896	dreq (SV *callback)
		897	{
		898	SV *cb_cv;
		899	aio_req req;
		900	int req_pri = next_pri;
		901	next_pri = EIO_PRI_DEFAULT;
		902
		903	cb_cv = get_cb (callback);
		904
		905	req = calloc (sizeof (*req), 1);
		906	if (!req)
		907	croak ("out of memory during eio_req allocation");
		908
		909	req->callback = SvREFCNT_inc (cb_cv);
		910	req->pri = req_pri;
		911
		912	return req;
		913	}
		914
		915	#define dREQ \
		916	aio_req req = dreq (callback); \
		917
		918	#define REQ_SEND \
		919	PUTBACK; \
		920	req_submit (req); \
		921	SPAGAIN; \
		922	\
		923	if (GIMME_V != G_VOID) \
		924	XPUSHs (req_sv (req, aio_req_stash));
		925
		926	ecb_inline void
		927	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		928	{
		929	if (expect_false (SvROK (path)))
		930	{
		931	SV *rv = SvRV (path);
		932	SV *wdob;
		933
		934	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
722	{	935	{
723	maybe_start_thread ();	936	path = AvARRAY (rv)[1];
		937	wdob = AvARRAY (rv)[0];
724		938
725	LOCK (reslock);	939	if (SvOK (wdob))
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{	940	{
730	--npending;	941	*wd = SvAIO_WD (wdob);
731		942	*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	}	943	}
753	else	944	else
754	{	945	*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	}	946	}
		947	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		948	{
		949	*wd = (aio_wd)(long)SvIVX (rv);
		950	*wdsv = SvREFCNT_inc_NN (rv);
		951	*ptr = ".";
		952	return; /* path set to "." */
		953	}
		954	else
		955	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		956	}
778		957
779	if (nreqs <= max_outstanding)	958	*pathsv = newSVsv (path);
		959	*ptr = SvPVbyte_nolen (*pathsv);
		960	}
		961
		962	static void ecb_noinline
		963	req_set_path1 (aio_req req, SV *path)
		964	{
		965	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		966	}
		967
		968	static void ecb_noinline
		969	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		970	{
		971	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		972
		973	switch (SvTYPE (rv))
		974	{
		975	case SVt_PVIO:
		976	case SVt_PVLV:
		977	case SVt_PVGV:
		978	req->type = type_fh;
		979	req->sv1 = newSVsv (fh_or_path);
		980	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780	break;	981	break;
781		982
782	poll_wait ();	983	default:
783		984	req->type = type_path;
784	++maxreqs;	985	req_set_path1 (req, fh_or_path);
		986	break;
785	}	987	}
786
787	unblock_sig ();
788	return count;
789	}
790
791	static void create_pipe ()
792	{
793	if (pipe (respipe))
794	croak ("unable to initialize result pipe");
795
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	}	988	}
802		989
803	/*****************************************************************************/	990	/*****************************************************************************/
804	/* work around various missing functions */
805		991
806	#if !HAVE_PREADWRITE	992	static void
807	# define pread aio_pread	993	ts_set (struct timespec *ts, NV value)
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	{	994	{
819	ssize_t res;	995	ts->tv_sec = value;
820	off_t ooffset;	996	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
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	}	997	}
831		998
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	999	static NV
		1000	ts_get (const struct timespec *ts)
833	{	1001	{
834	ssize_t res;	1002	return ts->tv_sec + ts->tv_nsec * 1e-9;
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	}	1003	}
1085		1004
1086	/*****************************************************************************/	1005	/*****************************************************************************/
1087		1006
1088	static void *aio_proc (void *thr_arg)	1007	XS(boot_IO__AIO) ecb_cold;
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093		1008
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	1009	MODULE = IO::AIO PACKAGE = IO::AIO
1337		1010
1338	PROTOTYPES: ENABLE	1011	PROTOTYPES: ENABLE
1339		1012
1340	BOOT:	1013	BOOT:
1341	{	1014	{
		1015	static const struct {
		1016	const char *name;
		1017	IV iv;
		1018	} *civ, const_iv[] = {
		1019	# define const_niv(name, value) { # name, (IV) value },
		1020	# define const_iv(name) { # name, (IV) name },
		1021	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1022
		1023	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1024	/* the first block can be undef if missing */
		1025	const_iv (ENOSYS)
		1026	const_iv (EXDEV)
		1027	const_iv (EBADR)
		1028
		1029	/* for lseek */
		1030	const_iv (SEEK_DATA)
		1031	const_iv (SEEK_HOLE)
		1032
		1033	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1034	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1035	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1036	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1037	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1038	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1039
		1040	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1041	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1042	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1043	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1044	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1045
		1046	/* the second block will be 0 when missing */
		1047	const_iv (O_ACCMODE)
		1048
		1049	const_iv (O_RDONLY)
		1050	const_iv (O_WRONLY)
		1051	const_iv (O_RDWR)
		1052	const_iv (O_CREAT)
		1053	const_iv (O_TRUNC)
		1054	const_iv (O_EXCL)
		1055	const_iv (O_APPEND)
		1056
		1057	const_iv (O_ASYNC)
		1058	const_iv (O_DIRECT)
		1059	const_iv (O_NOATIME)
		1060
		1061	const_iv (O_CLOEXEC)
		1062	const_iv (O_NOCTTY)
		1063	const_iv (O_NOFOLLOW)
		1064	const_iv (O_NONBLOCK)
		1065	const_iv (O_EXEC)
		1066	const_iv (O_SEARCH)
		1067	const_iv (O_DIRECTORY)
		1068	const_iv (O_DSYNC)
		1069	const_iv (O_RSYNC)
		1070	const_iv (O_SYNC)
		1071	const_iv (O_PATH)
		1072	const_iv (O_TMPFILE)
		1073	const_iv (O_TTY_INIT)
		1074
		1075	const_iv (S_IFIFO)
		1076	const_iv (S_IFCHR)
		1077	const_iv (S_IFBLK)
		1078	const_iv (S_IFLNK)
		1079	const_iv (S_IFREG)
		1080	const_iv (S_IFDIR)
		1081	const_iv (S_IFWHT)
		1082	const_iv (S_IFSOCK)
		1083	const_iv (S_IFMT)
		1084
		1085	const_iv (ST_RDONLY)
		1086	const_iv (ST_NOSUID)
		1087	const_iv (ST_NODEV)
		1088	const_iv (ST_NOEXEC)
		1089	const_iv (ST_SYNCHRONOUS)
		1090	const_iv (ST_MANDLOCK)
		1091	const_iv (ST_WRITE)
		1092	const_iv (ST_APPEND)
		1093	const_iv (ST_IMMUTABLE)
		1094	const_iv (ST_NOATIME)
		1095	const_iv (ST_NODIRATIME)
		1096	const_iv (ST_RELATIME)
		1097
		1098	const_iv (PROT_NONE)
		1099	const_iv (PROT_EXEC)
		1100	const_iv (PROT_READ)
		1101	const_iv (PROT_WRITE)
		1102
		1103	const_iv (MAP_PRIVATE)
		1104	const_iv (MAP_SHARED)
		1105	const_iv (MAP_FIXED)
		1106	const_iv (MAP_ANONYMOUS)
		1107
		1108	/* linuxish */
		1109	const_iv (MAP_LOCKED)
		1110	const_iv (MAP_NORESERVE)
		1111	const_iv (MAP_POPULATE)
		1112	const_iv (MAP_NONBLOCK)
		1113	const_iv (MAP_GROWSDOWN)
		1114	const_iv (MAP_32BIT)
		1115	const_iv (MAP_HUGETLB)
		1116	const_iv (MAP_STACK)
		1117
		1118	const_iv (MREMAP_MAYMOVE)
		1119	const_iv (MREMAP_FIXED)
		1120
		1121	const_iv (F_DUPFD_CLOEXEC)
		1122
		1123	const_iv (F_OFD_GETLK)
		1124	const_iv (F_OFD_SETLK)
		1125	const_iv (F_OFD_GETLKW)
		1126
		1127	const_iv (FIFREEZE)
		1128	const_iv (FITHAW)
		1129	const_iv (FITRIM)
		1130	const_iv (FICLONE)
		1131	const_iv (FICLONERANGE)
		1132	const_iv (FIDEDUPERANGE)
		1133
		1134	const_iv (FS_IOC_GETFLAGS)
		1135	const_iv (FS_IOC_SETFLAGS)
		1136	const_iv (FS_IOC_GETVERSION)
		1137	const_iv (FS_IOC_SETVERSION)
		1138	const_iv (FS_IOC_FIEMAP)
		1139	const_iv (FS_IOC_FSGETXATTR)
		1140	const_iv (FS_IOC_FSSETXATTR)
		1141	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1142	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1143	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1144
		1145	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1146
		1147	const_iv (FS_SECRM_FL)
		1148	const_iv (FS_UNRM_FL)
		1149	const_iv (FS_COMPR_FL)
		1150	const_iv (FS_SYNC_FL)
		1151	const_iv (FS_IMMUTABLE_FL)
		1152	const_iv (FS_APPEND_FL)
		1153	const_iv (FS_NODUMP_FL)
		1154	const_iv (FS_NOATIME_FL)
		1155	const_iv (FS_DIRTY_FL)
		1156	const_iv (FS_COMPRBLK_FL)
		1157	const_iv (FS_NOCOMP_FL)
		1158	const_iv (FS_ENCRYPT_FL)
		1159	const_iv (FS_BTREE_FL)
		1160	const_iv (FS_INDEX_FL)
		1161	const_iv (FS_JOURNAL_DATA_FL)
		1162	const_iv (FS_NOTAIL_FL)
		1163	const_iv (FS_DIRSYNC_FL)
		1164	const_iv (FS_TOPDIR_FL)
		1165	const_iv (FS_FL_USER_MODIFIABLE)
		1166
		1167	const_iv (FS_XFLAG_REALTIME)
		1168	const_iv (FS_XFLAG_PREALLOC)
		1169	const_iv (FS_XFLAG_IMMUTABLE)
		1170	const_iv (FS_XFLAG_APPEND)
		1171	const_iv (FS_XFLAG_SYNC)
		1172	const_iv (FS_XFLAG_NOATIME)
		1173	const_iv (FS_XFLAG_NODUMP)
		1174	const_iv (FS_XFLAG_RTINHERIT)
		1175	const_iv (FS_XFLAG_PROJINHERIT)
		1176	const_iv (FS_XFLAG_NOSYMLINKS)
		1177	const_iv (FS_XFLAG_EXTSIZE)
		1178	const_iv (FS_XFLAG_EXTSZINHERIT)
		1179	const_iv (FS_XFLAG_NODEFRAG)
		1180	const_iv (FS_XFLAG_FILESTREAM)
		1181	const_iv (FS_XFLAG_DAX)
		1182	const_iv (FS_XFLAG_HASATTR)
		1183
		1184	const_iv (FIEMAP_FLAG_SYNC)
		1185	const_iv (FIEMAP_FLAG_XATTR)
		1186	const_iv (FIEMAP_FLAGS_COMPAT)
		1187	const_iv (FIEMAP_EXTENT_LAST)
		1188	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1189	const_iv (FIEMAP_EXTENT_DELALLOC)
		1190	const_iv (FIEMAP_EXTENT_ENCODED)
		1191	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1192	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1193	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1194	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1195	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1196	const_iv (FIEMAP_EXTENT_MERGED)
		1197	const_iv (FIEMAP_EXTENT_SHARED)
		1198
		1199	const_iv (SPLICE_F_MOVE)
		1200	const_iv (SPLICE_F_NONBLOCK)
		1201	const_iv (SPLICE_F_MORE)
		1202	const_iv (SPLICE_F_GIFT)
		1203
		1204	const_iv (EFD_CLOEXEC)
		1205	const_iv (EFD_NONBLOCK)
		1206	const_iv (EFD_SEMAPHORE)
		1207
		1208	const_iv (CLOCK_REALTIME)
		1209	const_iv (CLOCK_MONOTONIC)
		1210	const_iv (CLOCK_BOOTTIME)
		1211	const_iv (CLOCK_REALTIME_ALARM)
		1212	const_iv (CLOCK_BOOTTIME_ALARM)
		1213
		1214	const_iv (TFD_NONBLOCK)
		1215	const_iv (TFD_CLOEXEC)
		1216
		1217	const_iv (TFD_TIMER_ABSTIME)
		1218	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1219
		1220	/* these are libeio constants, and are independent of gendef0 */
		1221	const_eio (SEEK_SET)
		1222	const_eio (SEEK_CUR)
		1223	const_eio (SEEK_END)
		1224
		1225	const_eio (MCL_FUTURE)
		1226	const_eio (MCL_CURRENT)
		1227
		1228	const_eio (MS_ASYNC)
		1229	const_eio (MS_INVALIDATE)
		1230	const_eio (MS_SYNC)
		1231
		1232	const_eio (MT_MODIFY)
		1233
		1234	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1235	const_eio (SYNC_FILE_RANGE_WRITE)
		1236	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1237
		1238	const_eio (FALLOC_FL_KEEP_SIZE)
		1239	const_eio (FALLOC_FL_PUNCH_HOLE)
		1240	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1241	const_eio (FALLOC_FL_ZERO_RANGE)
		1242	const_eio (FALLOC_FL_INSERT_RANGE)
		1243	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1244
		1245	const_eio (RENAME_NOREPLACE)
		1246	const_eio (RENAME_EXCHANGE)
		1247	const_eio (RENAME_WHITEOUT)
		1248
		1249	const_eio (READDIR_DENTS)
		1250	const_eio (READDIR_DIRS_FIRST)
		1251	const_eio (READDIR_STAT_ORDER)
		1252	const_eio (READDIR_FOUND_UNKNOWN)
		1253
		1254	const_eio (DT_UNKNOWN)
		1255	const_eio (DT_FIFO)
		1256	const_eio (DT_CHR)
		1257	const_eio (DT_DIR)
		1258	const_eio (DT_BLK)
		1259	const_eio (DT_REG)
		1260	const_eio (DT_LNK)
		1261	const_eio (DT_SOCK)
		1262	const_eio (DT_WHT)
		1263	};
		1264
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	1265	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1266	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1267	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1268	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1343		1269
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1270	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1271	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		1272
1352	create_pipe ();	1273	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354	}
1355		1274
		1275	reinit ();
		1276	}
		1277
1356	void	1278	void
		1279	reinit ()
		1280	PROTOTYPE:
		1281
		1282	void
1357	max_poll_reqs (int nreqs)	1283	max_poll_reqs (unsigned int nreqs)
1358	PROTOTYPE: $	1284	PROTOTYPE: $
1359	CODE:	1285	CODE:
1360	max_poll_reqs = nreqs;	1286	eio_set_max_poll_reqs (nreqs);
1361		1287
1362	void	1288	void
1363	max_poll_time (double nseconds)	1289	max_poll_time (double nseconds)
1364	PROTOTYPE: $	1290	PROTOTYPE: $
1365	CODE:	1291	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	1292	eio_set_max_poll_time (nseconds);
1367		1293
1368	void	1294	void
1369	min_parallel (int nthreads)	1295	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: $	1296	PROTOTYPE: $
1379	CODE:	1297	CODE:
1380	set_max_idle (nthreads);	1298	eio_set_min_parallel (nthreads);
1381		1299
1382	int	1300	void
1383	max_outstanding (int maxreqs)	1301	max_parallel (unsigned int nthreads)
1384	PROTOTYPE: $	1302	PROTOTYPE: $
1385	CODE:	1303	CODE:
1386	RETVAL = max_outstanding;	1304	eio_set_max_parallel (nthreads);
		1305
		1306	void
		1307	max_idle (unsigned int nthreads)
		1308	PROTOTYPE: $
		1309	CODE:
		1310	eio_set_max_idle (nthreads);
		1311
		1312	void
		1313	idle_timeout (unsigned int seconds)
		1314	PROTOTYPE: $
		1315	CODE:
		1316	eio_set_idle_timeout (seconds);
		1317
		1318	void
		1319	max_outstanding (unsigned int maxreqs)
		1320	PROTOTYPE: $
		1321	CODE:
1387	max_outstanding = maxreqs;	1322	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		1323
1391	void	1324	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1325	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1393	PROTOTYPE: $$$;$
1394	PPCODE:	1326	PPCODE:
1395	{	1327	{
1396	dREQ;	1328	dREQ;
1397		1329
		1330	req->type = EIO_WD_OPEN;
		1331	req_set_path1 (req, pathname);
		1332
		1333	REQ_SEND;
		1334	}
		1335
		1336	void
		1337	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1338	PPCODE:
		1339	{
		1340	dREQ;
		1341
1398	req->type = REQ_OPEN;	1342	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	1343	req_set_path1 (req, pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	1344	req->int1 = flags;
1402	req->mode = mode;	1345	req->int2 = mode;
1403		1346
1404	REQ_SEND;	1347	REQ_SEND;
1405	}	1348	}
1406		1349
1407	void	1350	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1351	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1409	PROTOTYPE: $;$
1410	ALIAS:	1352	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC	1353	aio_fsync = EIO_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC	1354	aio_fdatasync = EIO_FDATASYNC
		1355	aio_syncfs = EIO_SYNCFS
1414	PPCODE:	1356	PPCODE:
1415	{	1357	{
		1358	int fd = s_fileno_croak (fh, 0);
1416	dREQ;	1359	dREQ;
1417		1360
1418	req->type = ix;	1361	req->type = ix;
1419	req->sv1 = newSVsv (fh);	1362	req->sv1 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1363	req->int1 = fd;
1421		1364
1422	REQ_SEND (req);	1365	REQ_SEND;
1423	}	1366	}
1424		1367
1425	void	1368	void
		1369	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1370	PPCODE:
		1371	{
		1372	int fd = s_fileno_croak (fh, 0);
		1373	dREQ;
		1374
		1375	req->type = EIO_SYNC_FILE_RANGE;
		1376	req->sv1 = newSVsv (fh);
		1377	req->int1 = fd;
		1378	req->offs = offset;
		1379	req->size = nbytes;
		1380	req->int2 = flags;
		1381
		1382	REQ_SEND;
		1383	}
		1384
		1385	void
		1386	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1387	PPCODE:
		1388	{
		1389	int fd = s_fileno_croak (fh, 0);
		1390	dREQ;
		1391
		1392	req->type = EIO_FALLOCATE;
		1393	req->sv1 = newSVsv (fh);
		1394	req->int1 = fd;
		1395	req->int2 = mode;
		1396	req->offs = offset;
		1397	req->size = len;
		1398
		1399	REQ_SEND;
		1400	}
		1401
		1402	void
		1403	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1404	PPCODE:
		1405	{
		1406	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1407	int fd = s_fileno_croak (fh, 0);
		1408	dREQ;
		1409
		1410	if (expect_false (close_fd < 0))
		1411	{
		1412	int pipefd [2];
		1413
		1414	if (
		1415	#ifdef _WIN32
		1416	_pipe (pipefd, 1, _O_BINARY) < 0
		1417	#else
		1418	pipe (pipefd) < 0
		1419	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1420	#endif
		1421	|| close (pipefd [1]) < 0
		1422	)
		1423	abort (); /*D*/
		1424
		1425	close_fd = pipefd [0];
		1426	}
		1427
		1428	req->type = EIO_DUP2;
		1429	req->int1 = close_fd;
		1430	req->sv2 = newSVsv (fh);
		1431	req->int2 = fd;
		1432
		1433	REQ_SEND;
		1434	}
		1435
		1436	void
		1437	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1438	PPCODE:
		1439	{
		1440	int fd = s_fileno_croak (fh, 0);
		1441	dREQ;
		1442
		1443	req->type = EIO_SEEK;
		1444	req->sv1 = newSVsv (fh);
		1445	req->int1 = fd;
		1446	req->offs = SvVAL64 (offset);
		1447	req->int2 = whence;
		1448
		1449	REQ_SEND;
		1450	}
		1451
		1452	void
1426	aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	1453	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1427	ALIAS:	1454	ALIAS:
1428	aio_read = REQ_READ	1455	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	1456	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$
1431	PPCODE:	1457	PPCODE:
1432	{	1458	{
1433	STRLEN svlen;	1459	STRLEN svlen;
		1460	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	1461	char *svptr = SvPVbyte (data, svlen);
1435		1462	UV len = SvUV (length);
1436	SvUPGRADE (data, SVt_PV);
1437	SvPOK_on (data);
1438		1463
1439	if (dataoffset < 0)	1464	if (dataoffset < 0)
1440	dataoffset += svlen;	1465	dataoffset += svlen;
1441		1466
1442	if (dataoffset < 0 || dataoffset > svlen)	1467	if (dataoffset < 0 || dataoffset > svlen)
1443	croak ("data offset outside of string");	1468	croak ("dataoffset outside of data scalar");
1444		1469
1445	if (ix == REQ_WRITE)	1470	if (ix == EIO_WRITE)
1446	{	1471	{
1447	/* write: check length and adjust. */	1472	/* write: check length and adjust. */
1448	if (length < 0 || length + dataoffset > svlen)	1473	if (!SvOK (length) || len + dataoffset > svlen)
1449	length = svlen - dataoffset;	1474	len = svlen - dataoffset;
1450	}	1475	}
1451	else	1476	else
1452	{	1477	{
1453	/* read: grow scalar as necessary */	1478	/* read: check type and grow scalar as necessary */
		1479	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1454	svptr = SvGROW (data, length + dataoffset + 1);	1480	svptr = sv_grow (data, len + dataoffset + 1);
		1481	else if (SvCUR (data) < len + dataoffset)
		1482	croak ("length + dataoffset outside of scalar, and cannot grow");
1455	}	1483	}
1456
1457	if (length < 0)
1458	croak ("length must not be negative");
1459		1484
1460	{	1485	{
1461	dREQ;	1486	dREQ;
1462		1487
1463	req->type = ix;	1488	req->type = ix;
1464	req->sv1 = newSVsv (fh);	1489	req->sv1 = newSVsv (fh);
1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1490	req->int1 = fd;
1466	: IoOFP (sv_2io (fh)));
1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1491	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1468	req->size = length;	1492	req->size = len;
1469	req->sv2 = SvREFCNT_inc (data);	1493	req->sv2 = SvREFCNT_inc (data);
1470	req->ptr1 = (char *)svptr + dataoffset;	1494	req->ptr2 = (char *)svptr + dataoffset;
1471	req->stroffset = dataoffset;	1495	req->stroffset = dataoffset;
1472		1496
1473	if (!SvREADONLY (data))	1497	if (!SvREADONLY (data))
1474	{	1498	{
1475	SvREADONLY_on (data);	1499	SvREADONLY_on (data);
…		…
1479	REQ_SEND;	1503	REQ_SEND;
1480	}	1504	}
1481	}	1505	}
1482		1506
1483	void	1507	void
1484	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1508	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1485	PROTOTYPE: $$;$	1509	ALIAS:
		1510	aio_ioctl = EIO_IOCTL
		1511	aio_fcntl = EIO_FCNTL
1486	PPCODE:	1512	PPCODE:
1487	{	1513	{
1488	SV *data;	1514	int fd = s_fileno_croak (fh, 0);
1489	dREQ;	1515	char *svptr;
1490		1516
1491	data = newSV (NAME_MAX);	1517	if (SvPOK (arg) || !SvNIOK (arg))
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;
1495	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->sv1);
1497	req->sv2 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499
1500	REQ_SEND;
1501	}
1502
1503	void
1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $$$$;$
1506	PPCODE:
1507	{
1508	dREQ;
1509
1510	req->type = REQ_SENDFILE;
1511	req->sv1 = newSVsv (out_fh);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1513	req->sv2 = newSVsv (in_fh);
1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1515	req->offs = SvVAL64 (in_offset);
1516	req->size = length;
1517
1518	REQ_SEND;
1519	}
1520
1521	void
1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1523	PROTOTYPE: $$$;$
1524	PPCODE:
1525	{
1526	dREQ;
1527
1528	req->type = REQ_READAHEAD;
1529	req->sv1 = newSVsv (fh);
1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1531	req->offs = SvVAL64 (offset);
1532	req->size = length;
1533
1534	REQ_SEND;
1535	}
1536
1537	void
1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1539	ALIAS:
1540	aio_stat = REQ_STAT
1541	aio_lstat = REQ_LSTAT
1542	PPCODE:
1543	{
1544	dREQ;
1545
1546	req->ptr2 = malloc (sizeof (Stat_t));
1547	if (!req->ptr2)
1548	{	1518	{
1549	req_destroy (req);	1519	STRLEN svlen;
1550	croak ("out of memory during aio_stat statdata allocation");	1520	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1551	}	1521	#ifdef IOCPARM_LEN
		1522	STRLEN need = IOCPARM_LEN (request);
		1523	#else
		1524	STRLEN need = 256;
		1525	#endif
1552		1526
1553	req->flags |= FLAG_PTR2_FREE;	1527	if (svlen < need)
1554	req->sv1 = newSVsv (fh_or_path);	1528	svptr = SvGROW (arg, need);
1555
1556	if (SvPOK (fh_or_path))
1557	{
1558	req->type = ix;
1559	req->ptr1 = SvPVbyte_nolen (req->sv1);
1560	}	1529	}
1561	else	1530	else
		1531	svptr = (char *)SvIV (arg);
		1532
1562	{	1533	{
		1534	dREQ;
		1535
1563	req->type = REQ_FSTAT;	1536	req->type = ix;
1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1537	req->sv1 = newSVsv (fh);
		1538	req->int1 = fd;
		1539	req->int2 = (long)request;
		1540	req->sv2 = SvREFCNT_inc (arg);
		1541	req->ptr2 = svptr;
		1542
		1543	REQ_SEND;
1565	}	1544	}
		1545	}
		1546
		1547	void
		1548	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1549	ALIAS:
		1550	aio_readlink = EIO_READLINK
		1551	aio_realpath = EIO_REALPATH
		1552	PPCODE:
		1553	{
		1554	dREQ;
		1555
		1556	req->type = ix;
		1557	req_set_path1 (req, pathname);
1566		1558
1567	REQ_SEND;	1559	REQ_SEND;
1568	}	1560	}
1569		1561
1570	void	1562	void
		1563	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1564	PPCODE:
		1565	{
		1566	int ifd = s_fileno_croak (in_fh , 0);
		1567	int ofd = s_fileno_croak (out_fh, 1);
		1568	dREQ;
		1569
		1570	req->type = EIO_SENDFILE;
		1571	req->sv1 = newSVsv (out_fh);
		1572	req->int1 = ofd;
		1573	req->sv2 = newSVsv (in_fh);
		1574	req->int2 = ifd;
		1575	req->offs = in_offset;
		1576	req->size = length;
		1577
		1578	REQ_SEND;
		1579	}
		1580
		1581	void
		1582	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1583	PPCODE:
		1584	{
		1585	int fd = s_fileno_croak (fh, 0);
		1586	dREQ;
		1587
		1588	req->type = EIO_READAHEAD;
		1589	req->sv1 = newSVsv (fh);
		1590	req->int1 = fd;
		1591	req->offs = offset;
		1592	req->size = length;
		1593
		1594	REQ_SEND;
		1595	}
		1596
		1597	void
		1598	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1599	ALIAS:
		1600	aio_stat = EIO_STAT
		1601	aio_lstat = EIO_LSTAT
		1602	aio_statvfs = EIO_STATVFS
		1603	PPCODE:
		1604	{
		1605	dREQ;
		1606
		1607	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1608
		1609	REQ_SEND;
		1610	}
		1611
		1612	UV
		1613	major (UV dev)
		1614	ALIAS:
		1615	minor = 1
		1616	CODE:
		1617	RETVAL = ix ? minor (dev) : major (dev);
		1618	OUTPUT:
		1619	RETVAL
		1620
		1621	UV
		1622	makedev (UV maj, UV min)
		1623	CODE:
		1624	RETVAL = makedev (maj, min);
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	void
1571	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1629	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1572	PPCODE:	1630	PPCODE:
1573	{	1631	{
1574	dREQ;	1632	dREQ;
1575		1633
1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1634	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1635	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1578	req->sv1 = newSVsv (fh_or_path);	1636	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1579
1580	if (SvPOK (fh_or_path))
1581	{
1582	req->type = REQ_UTIME;
1583	req->ptr1 = SvPVbyte_nolen (req->sv1);
1584	}
1585	else
1586	{
1587	req->type = REQ_FUTIME;
1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1589	}
1590		1637
1591	REQ_SEND;	1638	REQ_SEND;
1592	}	1639	}
1593		1640
1594	void	1641	void
1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1642	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1596	PPCODE:	1643	PPCODE:
1597	{	1644	{
1598	dREQ;	1645	dREQ;
1599		1646
1600	req->mode = mode;	1647	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1601	req->sv1 = newSVsv (fh_or_path);	1648	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1602
1603	if (SvPOK (fh_or_path))
1604	{
1605	req->type = REQ_CHMOD;
1606	req->ptr1 = SvPVbyte_nolen (req->sv1);
1607	}
1608	else
1609	{
1610	req->type = REQ_FCHMOD;
1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1612	}
1613		1649
1614	REQ_SEND;	1650	REQ_SEND;
1615	}	1651	}
1616		1652
1617	void	1653	void
		1654	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1655	PPCODE:
		1656	{
		1657	dREQ;
		1658
		1659	req->int2 = mode;
		1660	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1661
		1662	REQ_SEND;
		1663	}
		1664
		1665	void
1618	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1666	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1619	PPCODE:	1667	PPCODE:
1620	{	1668	{
1621	dREQ;	1669	dREQ;
1622		1670
1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1671	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1672	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1625	req->sv1 = newSVsv (fh_or_path);	1673	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1626
1627	if (SvPOK (fh_or_path))
1628	{
1629	req->type = REQ_CHOWN;
1630	req->ptr1 = SvPVbyte_nolen (req->sv1);
1631	}
1632	else
1633	{
1634	req->type = REQ_FCHOWN;
1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1636	}
1637		1674
1638	REQ_SEND;	1675	REQ_SEND;
1639	}	1676	}
1640		1677
1641	void	1678	void
		1679	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1680	PPCODE:
		1681	{
		1682	dREQ;
		1683
		1684	req->type = EIO_READDIR;
		1685	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1686
		1687	if (flags & EIO_READDIR_DENTS)
		1688	req->int1 |= EIO_READDIR_CUSTOM2;
		1689
		1690	req_set_path1 (req, pathname);
		1691
		1692	REQ_SEND;
		1693	}
		1694
		1695	void
		1696	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1697	PPCODE:
		1698	{
		1699	dREQ;
		1700
		1701	req->type = EIO_MKDIR;
		1702	req->int2 = mode;
		1703	req_set_path1 (req, pathname);
		1704
		1705	REQ_SEND;
		1706	}
		1707
		1708	void
1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1709	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1643	ALIAS:	1710	ALIAS:
1644	aio_unlink = REQ_UNLINK	1711	aio_unlink = EIO_UNLINK
1645	aio_rmdir = REQ_RMDIR	1712	aio_rmdir = EIO_RMDIR
1646	aio_readdir = REQ_READDIR	1713	aio_readdir = EIO_READDIR
1647	PPCODE:	1714	PPCODE:
1648	{	1715	{
1649	dREQ;	1716	dREQ;
1650		1717
1651	req->type = ix;	1718	req->type = ix;
1652	req->sv1 = newSVsv (pathname);	1719	req_set_path1 (req, pathname);
1653	req->ptr1 = SvPVbyte_nolen (req->sv1);
1654		1720
1655	REQ_SEND;	1721	REQ_SEND;
1656	}	1722	}
1657		1723
1658	void	1724	void
1659	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1725	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1726	ALIAS:
		1727	aio_link = EIO_LINK
		1728	aio_symlink = EIO_SYMLINK
		1729	aio_rename = EIO_RENAME
1660	PPCODE:	1730	PPCODE:
1661	{	1731	{
1662	dREQ;	1732	eio_wd wd2 = 0;
1663
1664	req->type = REQ_MKDIR;
1665	req->sv1 = newSVsv (pathname);
1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
1667	req->mode = mode;
1668
1669	REQ_SEND;
1670	}
1671
1672	void
1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1674	ALIAS:
1675	aio_link = REQ_LINK
1676	aio_symlink = REQ_SYMLINK
1677	aio_rename = REQ_RENAME
1678	PPCODE:
1679	{
1680	dREQ;	1733	dREQ;
1681		1734
1682	req->type = ix;	1735	req->type = ix;
1683	req->sv2 = newSVsv (oldpath);	1736	req_set_path1 (req, oldpath);
1684	req->ptr2 = SvPVbyte_nolen (req->sv2);	1737	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1685	req->sv1 = newSVsv (newpath);	1738	req->int3 = (long)wd2;
1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1687		1739
1688	REQ_SEND;	1740	REQ_SEND;
1689	}	1741	}
1690		1742
1691	void	1743	void
1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1744	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1693	PPCODE:	1745	PPCODE:
1694	{	1746	{
		1747	eio_wd wd2 = 0;
1695	dREQ;	1748	dREQ;
1696		1749
1697	req->type = REQ_MKNOD;	1750	req->type = EIO_RENAME;
1698	req->sv1 = newSVsv (pathname);	1751	req_set_path1 (req, oldpath);
1699	req->ptr1 = SvPVbyte_nolen (req->sv1);	1752	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1700	req->mode = (mode_t)mode;	1753	req->int2 = flags;
1701	req->offs = dev;	1754	req->int3 = (long)wd2;
1702		1755
1703	REQ_SEND;	1756	REQ_SEND;
1704	}	1757	}
1705		1758
1706	void	1759	void
1707	aio_busy (double delay, SV *callback=&PL_sv_undef)	1760	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1708	PPCODE:	1761	PPCODE:
1709	{	1762	{
1710	dREQ;	1763	dREQ;
		1764
		1765	req->type = EIO_MKNOD;
		1766	req->int2 = (mode_t)mode;
		1767	req->offs = dev;
		1768	req_set_path1 (req, pathname);
		1769
		1770	REQ_SEND;
		1771	}
1711		1772
		1773	void
		1774	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1775	ALIAS:
		1776	aio_mtouch = EIO_MTOUCH
		1777	aio_msync = EIO_MSYNC
		1778	PPCODE:
		1779	{
		1780	STRLEN svlen;
		1781	char *svptr = SvPVbyte (data, svlen);
		1782	UV len = SvUV (length);
		1783
		1784	if (flags < 0)
		1785	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1786
		1787	if (offset < 0)
		1788	offset += svlen;
		1789
		1790	if (offset < 0 || offset > svlen)
		1791	croak ("offset outside of scalar");
		1792
		1793	if (!SvOK (length) || len + offset > svlen)
		1794	len = svlen - offset;
		1795
		1796	{
		1797	dREQ;
		1798
		1799	req->type = ix;
		1800	req->sv2 = SvREFCNT_inc (data);
		1801	req->ptr2 = (char *)svptr + offset;
		1802	req->size = len;
		1803	req->int1 = flags;
		1804
		1805	REQ_SEND;
		1806	}
		1807	}
		1808
		1809	void
		1810	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1811	PPCODE:
		1812	{
		1813	STRLEN svlen;
		1814	char *svptr = SvPVbyte (data, svlen);
		1815	UV len = SvUV (length);
		1816
		1817	if (offset < 0)
		1818	offset += svlen;
		1819
		1820	if (offset < 0 || offset > svlen)
		1821	croak ("offset outside of scalar");
		1822
		1823	if (!SvOK (length) || len + offset > svlen)
		1824	len = svlen - offset;
		1825
		1826	{
		1827	dREQ;
		1828
		1829	req->type = EIO_MLOCK;
		1830	req->sv2 = SvREFCNT_inc (data);
		1831	req->ptr2 = (char *)svptr + offset;
		1832	req->size = len;
		1833
		1834	REQ_SEND;
		1835	}
		1836	}
		1837
		1838	void
		1839	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1840	PPCODE:
		1841	{
		1842	dREQ;
		1843
		1844	req->type = EIO_MLOCKALL;
		1845	req->int1 = flags;
		1846
		1847	REQ_SEND;
		1848	}
		1849
		1850	void
		1851	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1852	PPCODE:
		1853	{
		1854	int fd = s_fileno_croak (fh, 0);
		1855	dREQ;
		1856
		1857	req->type = EIO_CUSTOM;
		1858	req->sv1 = newSVsv (fh);
		1859	req->int1 = fd;
		1860
		1861	req->feed = fiemap;
		1862	#if HAVE_FIEMAP
		1863	/* keep our fingers crossed that the next two types are 64 bit */
		1864	req->offs = start;
		1865	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1866	req->int2 = flags;
		1867	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1868	#endif
		1869
		1870	REQ_SEND;
		1871	}
		1872
		1873	void
		1874	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1875	PPCODE:
		1876	{
		1877	char *svptr = 0;
		1878
		1879	sv_clear_foreign (data);
		1880
		1881	if (length) /* known length, directly read into scalar */
		1882	{
		1883	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1884	svptr = sv_grow (data, length + 1);
		1885	else if (SvCUR (data) < length)
		1886	croak ("length outside of scalar, and cannot grow");
		1887	else
		1888	svptr = SvPVbyte_nolen (data);
		1889	}
		1890
		1891	{
		1892	dREQ;
		1893
		1894	req->type = EIO_SLURP;
		1895	req_set_path1 (req, pathname);
		1896	req->offs = offset;
		1897	req->size = length;
		1898	req->sv2 = SvREFCNT_inc (data);
		1899	req->ptr2 = svptr;
		1900
		1901	if (!SvREADONLY (data))
		1902	{
		1903	SvREADONLY_on (data);
		1904	req->flags |= FLAG_SV2_RO_OFF;
		1905	}
		1906
		1907	REQ_SEND;
		1908	}
		1909	}
		1910
		1911	void
		1912	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1913	PPCODE:
		1914	{
		1915	dREQ;
		1916
1712	req->type = REQ_BUSY;	1917	req->type = EIO_BUSY;
1713	req->nv1 = delay < 0. ? 0. : delay;	1918	req->nv1 = delay < 0. ? 0. : delay;
1714		1919
1715	REQ_SEND;	1920	REQ_SEND;
1716	}	1921	}
1717		1922
1718	void	1923	void
1719	aio_group (SV *callback=&PL_sv_undef)	1924	aio_group (SV *callback = &PL_sv_undef)
1720	PROTOTYPE: ;$
1721	PPCODE:	1925	PPCODE:
1722	{	1926	{
1723	dREQ;	1927	dREQ;
1724		1928
1725	req->type = REQ_GROUP;	1929	req->type = EIO_GROUP;
1726		1930
		1931	PUTBACK;
1727	req_send (req);	1932	req_submit (req);
		1933	SPAGAIN;
		1934
1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1935	XPUSHs (req_sv (req, aio_grp_stash));
1729	}	1936	}
1730		1937
1731	void	1938	void
1732	aio_nop (SV *callback=&PL_sv_undef)	1939	aio_nop (SV *callback = &PL_sv_undef)
		1940	ALIAS:
		1941	aio_nop = EIO_NOP
		1942	aio_sync = EIO_SYNC
1733	PPCODE:	1943	PPCODE:
1734	{	1944	{
1735	dREQ;	1945	dREQ;
1736		1946
1737	req->type = REQ_NOP;	1947	req->type = ix;
1738		1948
1739	REQ_SEND;	1949	REQ_SEND;
1740	}	1950	}
1741		1951
1742	int	1952	int
1743	aioreq_pri (int pri = 0)	1953	aioreq_pri (int pri = NO_INIT)
1744	PROTOTYPE: ;$
1745	CODE:	1954	CODE:
1746	RETVAL = next_pri - PRI_BIAS;	1955	RETVAL = next_pri;
1747	if (items > 0)	1956	if (items > 0)
1748	{	1957	{
1749	if (pri < PRI_MIN) pri = PRI_MIN;	1958	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1750	if (pri > PRI_MAX) pri = PRI_MAX;	1959	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1751	next_pri = pri + PRI_BIAS;	1960	next_pri = pri;
1752	}	1961	}
1753	OUTPUT:	1962	OUTPUT:
1754	RETVAL	1963	RETVAL
1755		1964
1756	void	1965	void
1757	aioreq_nice (int nice = 0)	1966	aioreq_nice (int nice = 0)
1758	CODE:	1967	CODE:
1759	nice = next_pri - nice;	1968	nice = next_pri - nice;
1760	if (nice < PRI_MIN) nice = PRI_MIN;	1969	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1761	if (nice > PRI_MAX) nice = PRI_MAX;	1970	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1762	next_pri = nice + PRI_BIAS;	1971	next_pri = nice;
1763		1972
1764	void	1973	void
1765	flush ()	1974	flush ()
1766	PROTOTYPE:
1767	CODE:	1975	CODE:
1768	while (nreqs)	1976	while (eio_nreqs ())
1769	{	1977	{
1770	poll_wait ();	1978	poll_wait ();
1771	poll_cb ();	1979	poll_cb ();
1772	}	1980	}
1773		1981
1774	int	1982	int
1775	poll()	1983	poll ()
1776	PROTOTYPE:
1777	CODE:	1984	CODE:
1778	poll_wait ();	1985	poll_wait ();
1779	RETVAL = poll_cb ();	1986	RETVAL = poll_cb ();
1780	OUTPUT:	1987	OUTPUT:
1781	RETVAL	1988	RETVAL
1782		1989
1783	int	1990	int
1784	poll_fileno()	1991	poll_fileno ()
1785	PROTOTYPE:
1786	CODE:	1992	CODE:
1787	RETVAL = respipe [0];	1993	RETVAL = s_epipe_fd (&respipe);
1788	OUTPUT:	1994	OUTPUT:
1789	RETVAL	1995	RETVAL
1790		1996
1791	int	1997	int
1792	poll_cb(...)	1998	poll_cb (...)
1793	PROTOTYPE:	1999	PROTOTYPE:
1794	CODE:	2000	CODE:
1795	RETVAL = poll_cb ();	2001	RETVAL = poll_cb ();
1796	OUTPUT:	2002	OUTPUT:
1797	RETVAL	2003	RETVAL
1798		2004
1799	void	2005	void
1800	poll_wait()	2006	poll_wait ()
1801	PROTOTYPE:
1802	CODE:	2007	CODE:
1803	poll_wait ();	2008	poll_wait ();
1804		2009
1805	void
1806	setsig (int signum = SIGIO)
1807	PROTOTYPE: ;$
1808	CODE:
1809	{
1810	if (block_sig_level)
1811	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1812
1813	LOCK (reslock);
1814	main_tid = pthread_self ();
1815	main_sig = signum;
1816	UNLOCK (reslock);
1817
1818	if (main_sig && npending)
1819	pthread_kill (main_tid, main_sig);
1820	}
1821
1822	void
1823	aio_block (SV *cb)
1824	PROTOTYPE: &
1825	PPCODE:
1826	{
1827	int count;
1828
1829	block_sig ();
1830	PUSHMARK (SP);
1831	PUTBACK;
1832	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1833	SPAGAIN;
1834	unblock_sig ();
1835
1836	if (SvTRUE (ERRSV))
1837	croak (0);
1838
1839	XSRETURN (count);
1840	}
1841
1842	int	2010	int
1843	nreqs()	2011	nreqs ()
1844	PROTOTYPE:
1845	CODE:	2012	CODE:
1846	RETVAL = nreqs;	2013	RETVAL = eio_nreqs ();
1847	OUTPUT:	2014	OUTPUT:
1848	RETVAL	2015	RETVAL
1849		2016
1850	int	2017	int
1851	nready()	2018	nready ()
1852	PROTOTYPE:
1853	CODE:	2019	CODE:
1854	RETVAL = get_nready ();	2020	RETVAL = eio_nready ();
1855	OUTPUT:	2021	OUTPUT:
1856	RETVAL	2022	RETVAL
1857		2023
1858	int	2024	int
1859	npending()	2025	npending ()
1860	PROTOTYPE:
1861	CODE:	2026	CODE:
1862	RETVAL = get_npending ();	2027	RETVAL = eio_npending ();
1863	OUTPUT:	2028	OUTPUT:
1864	RETVAL	2029	RETVAL
1865		2030
1866	int	2031	int
1867	nthreads()	2032	nthreads ()
1868	PROTOTYPE:
1869	CODE:	2033	CODE:
1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);	2034	RETVAL = eio_nthreads ();
1871	RETVAL = started;
1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1873	OUTPUT:	2035	OUTPUT:
1874	RETVAL	2036	RETVAL
1875		2037
		2038	int
		2039	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2040	CODE:
		2041	RETVAL = posix_fadvise (fh, offset, length, advice);
		2042	OUTPUT:
		2043	RETVAL
		2044
		2045	IV
		2046	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2047	CODE:
		2048	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2049	OUTPUT:
		2050	RETVAL
		2051
		2052	void
		2053	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2054	PPCODE:
		2055	sv_clear_foreign (scalar);
		2056	{
		2057	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2058	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2059	if (addr == (void *)-1)
		2060	XSRETURN_NO;
		2061
		2062	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2063
		2064	if (!(prot & PROT_WRITE))
		2065	SvREADONLY_on (scalar);
		2066
		2067	XSRETURN_YES;
		2068	}
		2069
		2070	void
		2071	munmap (SV *scalar)
		2072	CODE:
		2073	sv_clear_foreign (scalar);
		2074
		2075	SV *
		2076	mremap (SV *scalar, STRLEN new_length, int flags = 0, IV new_address = 0)
		2077	CODE:
		2078	{
		2079	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2080	void *new;
		2081
		2082	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2083	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2084
		2085	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2086
		2087	RETVAL = &PL_sv_no;
		2088
		2089	if (new != (void *)-1)
		2090	{
		2091	RETVAL = new == (void *)mg->mg_ptr
		2092	? newSVpvn ("0 but true", 10)
		2093	: &PL_sv_yes;
		2094
		2095	mg->mg_ptr = (char *)new;
		2096	mg->mg_obj = (SV *)new_length;
		2097
		2098	SvPVX (scalar) = mg->mg_ptr;
		2099	SvCUR_set (scalar, new_length);
		2100	}
		2101	}
		2102	OUTPUT:
		2103	RETVAL
		2104
		2105	int
		2106	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2107	ALIAS:
		2108	mprotect = 1
		2109	CODE:
		2110	{
		2111	STRLEN svlen;
		2112	void *addr = SvPVbyte (scalar, svlen);
		2113	STRLEN len = SvUV (length);
		2114
		2115	if (offset < 0)
		2116	offset += svlen;
		2117
		2118	if (offset < 0 || offset > svlen)
		2119	croak ("offset outside of scalar");
		2120
		2121	if (!SvOK (length) || len + offset > svlen)
		2122	len = svlen - offset;
		2123
		2124	addr = (void *)(((intptr_t)addr) + offset);
		2125	eio_page_align (&addr, &len);
		2126
		2127	switch (ix)
		2128	{
		2129	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2130	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2131	}
		2132	}
		2133	OUTPUT:
		2134	RETVAL
		2135
		2136	int
		2137	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2138	CODE:
		2139	{
		2140	STRLEN svlen;
		2141	void *addr = SvPVbyte (scalar, svlen);
		2142	size_t len = SvUV (length);
		2143
		2144	if (offset < 0)
		2145	offset += svlen;
		2146
		2147	if (offset < 0 || offset > svlen)
		2148	croak ("offset outside of scalar");
		2149
		2150	if (!SvOK (length) || len + offset > svlen)
		2151	len = svlen - offset;
		2152
		2153	addr = (void *)(((intptr_t)addr) + offset);
		2154	eio_page_align (&addr, &len);
		2155	#if _POSIX_MEMLOCK_RANGE
		2156	RETVAL = munlock (addr, len);
		2157	#else
		2158	RETVAL = EIO_ENOSYS ();
		2159	#endif
		2160	}
		2161	OUTPUT:
		2162	RETVAL
		2163
		2164	int
		2165	munlockall ()
		2166	CODE:
		2167	#if _POSIX_MEMLOCK
		2168	munlockall ();
		2169	#else
		2170	RETVAL = EIO_ENOSYS ();
		2171	#endif
		2172	OUTPUT:
		2173	RETVAL
		2174
		2175	int
		2176	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2177	CODE:
		2178	{
		2179	#if HAVE_LINUX_SPLICE
		2180	loff_t off_in_, off_out_;
		2181	RETVAL = splice (
		2182	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2183	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2184	length, flags
		2185	);
		2186	#else
		2187	RETVAL = EIO_ENOSYS ();
		2188	#endif
		2189	}
		2190	OUTPUT:
		2191	RETVAL
		2192
		2193	int
		2194	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2195	CODE:
		2196	#if HAVE_LINUX_SPLICE
		2197	RETVAL = tee (rfh, wfh, length, flags);
		2198	#else
		2199	RETVAL = EIO_ENOSYS ();
		2200	#endif
		2201	OUTPUT:
		2202	RETVAL
		2203
		2204	int
		2205	pipesize (aio_rfd rfh, int new_size = -1)
		2206	PROTOTYPE: $;$
		2207	CODE:
		2208	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2209	if (new_size >= 0)
		2210	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2211	else
		2212	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2213	#else
		2214	errno = ENOSYS;
		2215	RETVAL = -1;
		2216	#endif
		2217	OUTPUT:
		2218	RETVAL
		2219
		2220	void
		2221	pipe2 (int flags = 0)
		2222	PROTOTYPE: ;$
		2223	PPCODE:
		2224	{
		2225	int fd[2];
		2226	int res;
		2227
		2228	if (flags)
		2229	#if HAVE_PIPE2
		2230	res = pipe2 (fd, flags);
		2231	#else
		2232	res = (errno = ENOSYS, -1);
		2233	#endif
		2234	else
		2235	res = pipe (fd);
		2236
		2237	if (!res)
		2238	{
		2239	EXTEND (SP, 2);
		2240	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2241	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2242	}
		2243	}
		2244
		2245	void
		2246	eventfd (unsigned int initval = 0, int flags = 0)
		2247	PPCODE:
		2248	{
		2249	int fd;
		2250	#if HAVE_EVENTFD
		2251	fd = eventfd (initval, flags);
		2252	#else
		2253	fd = (errno = ENOSYS, -1);
		2254	#endif
		2255
		2256	XPUSHs (newmortalFH (fd, O_RDWR));
		2257	}
		2258
		2259	void
		2260	timerfd_create (int clockid, int flags = 0)
		2261	PPCODE:
		2262	{
		2263	int fd;
		2264	#if HAVE_TIMERFD
		2265	fd = timerfd_create (clockid, flags);
		2266	#else
		2267	fd = (errno = ENOSYS, -1);
		2268	#endif
		2269
		2270	XPUSHs (newmortalFH (fd, O_RDWR));
		2271	}
		2272
		2273	void
		2274	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2275	PPCODE:
		2276	{
		2277	int fd = s_fileno_croak (fh, 0);
		2278	#if HAVE_TIMERFD
		2279	int res;
		2280	struct itimerspec its, ots;
		2281
		2282	ts_set (&its.it_interval, interval);
		2283	ts_set (&its.it_value , value);
		2284	res = timerfd_settime (fd, flags, &its, &ots);
		2285
		2286	if (!res)
		2287	{
		2288	EXTEND (SP, 2);
		2289	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2290	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2291	}
		2292	#else
		2293	errno = ENOSYS;
		2294	#endif
		2295	}
		2296
		2297	void
		2298	timerfd_gettime (SV *fh)
		2299	PPCODE:
		2300	{
		2301	int fd = s_fileno_croak (fh, 0);
		2302	#if HAVE_TIMERFD
		2303	int res;
		2304	struct itimerspec ots;
		2305	res = timerfd_gettime (fd, &ots);
		2306
		2307	if (!res)
		2308	{
		2309	EXTEND (SP, 2);
		2310	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2311	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2312	}
		2313	#else
		2314	errno = ENOSYS;
		2315	#endif
		2316	}
		2317
		2318	UV
		2319	get_fdlimit ()
		2320	CODE:
		2321	#if HAVE_RLIMITS
		2322	struct rlimit rl;
		2323	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2324	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2325	#endif
		2326	XSRETURN_UNDEF;
		2327	OUTPUT:
		2328	RETVAL
		2329
		2330	void
		2331	min_fdlimit (UV limit = 0x7fffffffU)
		2332	CODE:
		2333	{
		2334	#if HAVE_RLIMITS
		2335	struct rlimit rl;
		2336	rlim_t orig_rlim_max;
		2337	UV bit;
		2338
		2339	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2340	goto fail;
		2341
		2342	if (rl.rlim_cur == RLIM_INFINITY)
		2343	XSRETURN_YES;
		2344
		2345	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2346
		2347	if (rl.rlim_cur < limit)
		2348	{
		2349	rl.rlim_cur = limit;
		2350
		2351	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2352	rl.rlim_max = rl.rlim_cur;
		2353	}
		2354
		2355	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2356	XSRETURN_YES;
		2357
		2358	if (errno == EPERM)
		2359	{
		2360	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2361	/* our limit overflows a system-wide limit */
		2362	/* try an adaptive algorithm, but do not lower the hardlimit */
		2363	rl.rlim_max = 0;
		2364	for (bit = 0x40000000U; bit; bit >>= 1)
		2365	{
		2366	rl.rlim_max |= bit;
		2367	rl.rlim_cur = rl.rlim_max;
		2368
		2369	/* nevr decrease the hard limit */
		2370	if (rl.rlim_max < orig_rlim_max)
		2371	break;
		2372
		2373	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2374	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2375	}
		2376
		2377	/* now, raise the soft limit to the max permitted */
		2378	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2379	{
		2380	rl.rlim_cur = rl.rlim_max;
		2381	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2382	errno = EPERM;
		2383	}
		2384	}
		2385	#endif
		2386	fail:
		2387	XSRETURN_UNDEF;
		2388	}
		2389
		2390	void _on_next_submit (SV *cb)
		2391	CODE:
		2392	SvREFCNT_dec (on_next_submit);
		2393	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2394
1876	PROTOTYPES: DISABLE	2395	PROTOTYPES: DISABLE
		2396
		2397	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2398
		2399	BOOT:
		2400	{
		2401	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2402	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2403	}
		2404
		2405	void
		2406	DESTROY (SV *self)
		2407	CODE:
		2408	{
		2409	aio_wd wd = SvAIO_WD (self);
		2410	#if HAVE_AT
		2411	{
		2412	SV *callback = &PL_sv_undef;
		2413	dREQ; /* clobbers next_pri :/ */
		2414	next_pri = req->pri; /* restore next_pri */
		2415	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2416	req->type = EIO_WD_CLOSE;
		2417	req->wd = wd;
		2418	REQ_SEND;
		2419	}
		2420	#else
		2421	eio_wd_close_sync (wd);
		2422	#endif
		2423	}
1877		2424
1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2425	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1879		2426
1880	void	2427	void
1881	cancel (aio_req_ornot req)	2428	cancel (aio_req_ornot req)
1882	CODE:	2429	CODE:
1883	req_cancel (req);	2430	eio_cancel (req);
1884		2431
1885	void	2432	void
1886	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2433	cb (aio_req_ornot req, SV *callback = NO_INIT)
1887	CODE:	2434	PPCODE:
		2435	{
		2436	if (GIMME_V != G_VOID)
		2437	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2438
		2439	if (items > 1)
		2440	{
		2441	SV *cb_cv = get_cb (callback);
		2442
1888	SvREFCNT_dec (req->callback);	2443	SvREFCNT_dec (req->callback);
1889	req->callback = newSVsv (callback);	2444	req->callback = SvREFCNT_inc (cb_cv);
		2445	}
		2446	}
1890		2447
1891	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2448	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1892		2449
1893	void	2450	void
1894	add (aio_req grp, ...)	2451	add (aio_req grp, ...)
1895	PPCODE:	2452	PPCODE:
1896	{	2453	{
1897	int i;	2454	int i;
1898	aio_req req;
1899
1900	if (main_sig && !block_sig_level)
1901	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1902		2455
1903	if (grp->int1 == 2)	2456	if (grp->int1 == 2)
1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2457	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1905		2458
1906	for (i = 1; i < items; ++i )	2459	for (i = 1; i < items; ++i )
1907	{	2460	{
		2461	aio_req req;
		2462
1908	if (GIMME_V != G_VOID)	2463	if (GIMME_V != G_VOID)
1909	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2464	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1910		2465
1911	req = SvAIO_REQ (ST (i));	2466	req = SvAIO_REQ (ST (i));
1912		2467
1913	if (req)	2468	if (req)
1914	{	2469	eio_grp_add (grp, req);
1915	++grp->size;
1916	req->grp = grp;
1917
1918	req->grp_prev = 0;
1919	req->grp_next = grp->grp_first;
1920
1921	if (grp->grp_first)
1922	grp->grp_first->grp_prev = req;
1923
1924	grp->grp_first = req;
1925	}
1926	}	2470	}
1927	}	2471	}
1928		2472
1929	void	2473	void
1930	cancel_subs (aio_req_ornot req)	2474	cancel_subs (aio_req_ornot req)
…		…
1939	AV *av;	2483	AV *av;
1940		2484
1941	grp->errorno = errno;	2485	grp->errorno = errno;
1942		2486
1943	av = newAV ();	2487	av = newAV ();
		2488	av_extend (av, items - 1);
1944		2489
1945	for (i = 1; i < items; ++i )	2490	for (i = 1; i < items; ++i )
1946	av_push (av, newSVsv (ST (i)));	2491	av_push (av, newSVsv (ST (i)));
1947		2492
1948	SvREFCNT_dec (grp->sv1);	2493	SvREFCNT_dec (grp->sv1);
…		…
1955	grp->errorno = errorno;	2500	grp->errorno = errorno;
1956		2501
1957	void	2502	void
1958	limit (aio_req grp, int limit)	2503	limit (aio_req grp, int limit)
1959	CODE:	2504	CODE:
1960	grp->int2 = limit;	2505	eio_grp_limit (grp, limit);
1961	aio_grp_feed (grp);
1962		2506
1963	void	2507	void
1964	feed (aio_req grp, SV *callback=&PL_sv_undef)	2508	feed (aio_req grp, SV *callback = &PL_sv_undef)
1965	CODE:	2509	CODE:
1966	{	2510	{
1967	SvREFCNT_dec (grp->sv2);	2511	SvREFCNT_dec (grp->sv2);
1968	grp->sv2 = newSVsv (callback);	2512	grp->sv2 = newSVsv (callback);
		2513	grp->feed = aio_grp_feed;
1969		2514
1970	if (grp->int2 <= 0)	2515	if (grp->int2 <= 0)
1971	grp->int2 = 2;	2516	grp->int2 = 2;
1972		2517
1973	aio_grp_feed (grp);	2518	eio_grp_limit (grp, grp->int2);
1974	}	2519	}
1975		2520

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