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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.260 by root, Tue Jul 24 04:58:59 2018 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#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	#ifndef makedev
41	#define IDLE_TIMEOUT 10	169	# define makedev(maj,min) (((maj) << 8) | (min))
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif	170	#endif
47		171	#ifndef major
48	/* buffer size for various temporary buffers */	172	# 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	173	#endif
		174	#ifndef minor
		175	# define minor(dev) ((dev) & 0xff)
		176	#endif
57		177
58	#define dBUF \	178	#if PAGESIZE <= 0
59	char *aio_buf; \	179	# define PAGESIZE sysconf (_SC_PAGESIZE)
60	LOCK (wrklock); \	180	#endif
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	181
62	UNLOCK (wrklock); \	182	/*****************************************************************************/
63	if (!aio_buf) \	183
		184	#if !_POSIX_MAPPED_FILES
		185	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		186	# define munmap(addr,length) EIO_ENOSYS ()
		187	#endif
		188
		189	#if !_POSIX_MEMORY_PROTECTION
		190	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		191	#endif
		192
		193	#if !MREMAP_MAYMOVE
		194	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		195	#endif
		196
		197	#define FOREIGN_MAGIC PERL_MAGIC_ext
		198
		199	static int ecb_cold
		200	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		201	{
		202	int old_errno = errno;
		203	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		204	errno = old_errno;
		205
		206	mg->mg_obj = 0; /* just in case */
		207
		208	SvREADONLY_off (sv);
		209
		210	if (SvPVX (sv) != mg->mg_ptr)
		211	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		212
		213	SvCUR_set (sv, 0);
		214	SvPVX (sv) = 0;
		215	SvOK_off (sv);
		216
64	return -1;	217	return 0;
		218	}
65		219
66	typedef SV SV8; /* byte-sv, used for argument-checking */	220	static MGVTBL mmap_vtbl = {
67		221	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	};	222	};
84		223
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	224	static int ecb_cold
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	225	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88	typedef struct aio_cb
89	{	226	{
90	struct aio_cb *volatile next;	227	free (mg->mg_ptr);
		228	mg->mg_obj = 0; /* just in case */
91		229
92	SV *callback;	230	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		231
100	STRLEN stroffset;	232	if (SvPVX (sv) != mg->mg_ptr)
101	int type;	233	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		234
106	unsigned char flags;	235	SvCUR_set (sv, 0);
107	unsigned char pri;	236	SvPVX (sv) = 0;
		237	SvOK_off (sv);
108		238
109	SV *self; /* the perl counterpart of this request, if any */	239	return 0;
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	240	}
111	} aio_cb;
112		241
113	enum {	242	static MGVTBL sysfree_vtbl = {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */	243	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	};	244	};
118		245
119	typedef aio_cb *aio_req;	246	/*****************************************************************************/
120	typedef aio_cb *aio_req_ornot;
121		247
122	enum {	248	/* helper: set scalar to foreign ptr with custom free */
123	PRI_MIN = -4,	249	static void
124	PRI_MAX = 4,	250	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	{	251	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	252	sv_force_normal (sv);
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142		253
143	static thread_t main_tid;	254	/* we store the length in mg_obj, as namlen is I32 :/ */
144	static int main_sig;	255	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
145	static int block_sig_level;	256	->mg_obj = (SV *)length;
146		257
147	void block_sig ()	258	SvUPGRADE (sv, SVt_PV); /* nop... */
148	{
149	sigset_t ss;
150		259
151	if (block_sig_level++)	260	if (SvLEN (sv))
		261	Safefree (SvPVX (sv));
		262
		263	SvPVX (sv) = (char *)addr;
		264	SvCUR_set (sv, length);
		265	SvLEN_set (sv, 0);
		266	SvPOK_only (sv);
		267	}
		268
		269	static void
		270	sv_clear_foreign (SV *sv)
		271	{
		272	/* todo: iterate over magic and only free ours, but of course */
		273	/* the perl5porters will call that (correct) behaviour buggy */
		274	sv_unmagic (sv, FOREIGN_MAGIC);
		275	}
		276
		277	/*****************************************************************************/
		278
		279	/* defines all sorts of constants to 0 unless they are already defined */
		280	/* also provides const_iv_ and const_niv_ macros for them */
		281	#include "def0.h"
		282
		283	/*****************************************************************************/
		284
		285	static void
		286	fiemap (eio_req *req)
		287	{
		288	req->result = -1;
		289
		290	#if HAVE_FIEMAP
		291	/* assume some c99 */
		292	struct fiemap *fiemap = 0;
		293	size_t end_offset;
		294	int count = req->int3;
		295
		296	req->flags |= EIO_FLAG_PTR1_FREE;
		297
		298	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		299	/* increase in 3.5kb steps */
		300	if (count < 0)
		301	count = 8;
		302
		303	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		304	errno = ENOMEM;
		305	if (!fiemap)
152	return;	306	return;
153		307
154	if (!main_sig)	308	req->ptr1 = fiemap;
		309
		310	fiemap->fm_start = req->offs;
		311	fiemap->fm_length = req->size;
		312	fiemap->fm_flags = req->int2;
		313	fiemap->fm_extent_count = count;
		314
		315	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
155	return;	316	return;
156		317
157	sigemptyset (&ss);	318	if (req->int3 >= 0 /* not autosizing */
158	sigaddset (&ss, main_sig);	319	|| !fiemap->fm_mapped_extents /* no more extents */
159	pthread_sigmask (SIG_BLOCK, &ss, 0);	320	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160	}	321	goto done;
161		322
162	void unblock_sig ()	323	/* else we have to loop -
163	{	324	* it would be tempting (actually I tried that first) to just query the
164	sigset_t ss;	325	* number of extents needed, but linux often feels like not returning all
		326	* extents, without telling us it left any out. this complicates
		327	* this quite a bit.
		328	*/
165		329
166	if (--block_sig_level)	330	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167	return;
168		331
169	if (!main_sig)	332	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	{	333	{
202	closedir (wrk->dirp);	334	/* 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;	335	char scratch[3072];
204	}	336	struct fiemap *incmap = (struct fiemap *)scratch;
205		337
206	if (wrk->dbuf)	338	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207	{	339	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208	free (wrk->dbuf);	340	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209	wrk->dbuf = 0;	341	incmap->fm_flags = fiemap->fm_flags;
210	}	342	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211	}
212		343
213	static void worker_free (worker *wrk)	344	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;	345	return;
308		346
309	--q->size;	347	if (!incmap->fm_mapped_extents)
		348	goto done;
310		349
311	for (pri = NUM_PRI; pri--; )	350	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
312	{	351	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
313	aio_req req = q->qs[pri];	352	errno = ENOMEM;
314
315	if (req)	353	if (!fiemap)
		354	return;
		355
		356	req->ptr1 = fiemap;
		357
		358	for (count = 0; count < incmap->fm_mapped_extents; ++count)
316	{	359	{
317	if (!(q->qs[pri] = req->next))	360	struct fiemap_extent *e = incmap->fm_extents + count;
318	q->qe[pri] = 0;
319		361
320	return req;	362	if (e->fe_logical + e->fe_length >= end_offset)
		363	goto done;
		364
		365	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		366
		367	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		368	goto done;
		369
321	}	370	}
322	}	371	}
323		372
324	abort ();	373	done:
325	}	374	req->result = 0;
326		375
327	static int poll_cb ();	376	#else
328	static int req_invoke (aio_req req);	377	errno = ENOSYS;
		378	#endif
		379	}
		380
		381	/*****************************************************************************/
		382
		383	enum {
		384	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		385	};
		386
		387	typedef eio_req *aio_req;
		388	typedef eio_req *aio_req_ornot;
		389	typedef eio_wd aio_wd;
		390
		391	static SV *on_next_submit;
		392	static int next_pri = EIO_PRI_DEFAULT;
		393	static int max_outstanding;
		394
		395	static s_epipe respipe;
		396
329	static void req_destroy (aio_req req);	397	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	398	static void req_cancel (aio_req req);
331		399
		400	static void
		401	want_poll (void)
		402	{
		403	/* write a dummy byte to the pipe so fh becomes ready */
		404	s_epipe_signal (&respipe);
		405	}
		406
		407	static void
		408	done_poll (void)
		409	{
		410	/* read any signals sent by the worker threads */
		411	s_epipe_drain (&respipe);
		412	}
		413
332	/* must be called at most once */	414	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	415	static SV *
		416	req_sv (aio_req req, HV *stash)
334	{	417	{
335	if (!req->self)	418	if (!req->self)
336	{	419	{
337	req->self = (SV *)newHV ();	420	req->self = (SV *)newHV ();
338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	421	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339	}	422	}
340		423
341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	424	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342	}	425	}
343		426
344	static aio_req SvAIO_REQ (SV *sv)	427	static SV *
		428	newSVaio_wd (aio_wd wd)
		429	{
		430	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		431	}
		432
		433	static aio_req
		434	SvAIO_REQ (SV *sv)
345	{	435	{
346	MAGIC *mg;	436	MAGIC *mg;
347		437
348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	438	if (!SvROK (sv)
		439	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		440	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		441	&& SvSTASH (SvRV (sv)) != aio_req_stash
		442	&& !sv_derived_from (sv, "IO::AIO::REQ")))
349	croak ("object of class " AIO_REQ_KLASS " expected");	443	croak ("object of class IO::AIO::REQ expected");
350		444
351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	445	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352		446
353	return mg ? (aio_req)mg->mg_ptr : 0;	447	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	448	}
355		449
		450	static aio_wd
		451	SvAIO_WD (SV *sv)
		452	{
		453	if (!SvROK (sv)
		454	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		455	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		456	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		457
		458	return (aio_wd)(long)SvIVX (SvRV (sv));
		459	}
		460
		461	static SV *
		462	newmortalFH (int fd, int flags)
		463	{
		464	if (fd < 0)
		465	return &PL_sv_undef;
		466
		467	GV *gv = (GV *)sv_newmortal ();
		468	char sym[64];
		469	int symlen;
		470
		471	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		472	gv_init (gv, aio_stash, sym, symlen, 0);
		473
		474	symlen = snprintf (
		475	sym,
		476	sizeof (sym),
		477	"%s&=%d",
		478	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		479	fd
		480	);
		481
		482	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		483	? (SV *)gv : &PL_sv_undef;
		484	}
		485
		486	static void
356	static void aio_grp_feed (aio_req grp)	487	aio_grp_feed (aio_req grp)
357	{	488	{
358	block_sig ();	489	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	490	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	491	dSP;
367		492
368	ENTER;	493	ENTER;
369	SAVETMPS;	494	SAVETMPS;
370	PUSHMARK (SP);	495	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	496	XPUSHs (req_sv (grp, aio_grp_stash));
372	PUTBACK;	497	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	498	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	499	SPAGAIN;
375	FREETMPS;	500	FREETMPS;
376	LEAVE;	501	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	}	502	}
387
388	unblock_sig ();
389	}	503	}
390		504
391	static void aio_grp_dec (aio_req grp)	505	static void
		506	req_submit (eio_req *req)
392	{	507	{
393	--grp->size;	508	eio_submit (req);
394		509
395	/* call feeder, if applicable */	510	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	511	{
401	block_sig ();	512	dSP;
		513	SV *cb = sv_2mortal (on_next_submit);
402		514
403	if (!req_invoke (grp))	515	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		516
410	req_destroy (grp);	517	PUSHMARK (SP);
411	unblock_sig ();	518	PUTBACK;
		519	call_sv (cb, G_DISCARD | G_EVAL);
412	}	520	}
413	}	521	}
414		522
		523	static int
415	static int req_invoke (aio_req req)	524	req_invoke (eio_req *req)
416	{	525	{
417	dSP;
418
419	if (req->flags & FLAG_SV2_RO_OFF)	526	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	527	SvREADONLY_off (req->sv2);
421		528
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	529	if (!EIO_CANCELLED (req) && req->callback)
423	{	530	{
		531	dSP;
		532	static SV *sv_result_cache; /* caches the result integer SV */
		533	SV *sv_result;
		534
424	ENTER;	535	ENTER;
425	SAVETMPS;	536	SAVETMPS;
426	PUSHMARK (SP);	537	PUSHMARK (SP);
427	EXTEND (SP, 1);	538	EXTEND (SP, 1);
428		539
		540	/* do not recreate the result IV from scratch each time */
		541	if (expect_true (sv_result_cache))
		542	{
		543	sv_result = sv_result_cache; sv_result_cache = 0;
		544	SvIV_set (sv_result, req->result);
		545	SvIOK_only (sv_result);
		546	}
		547	else
		548	{
		549	sv_result = newSViv (req->result);
		550	SvREADONLY_on (sv_result);
		551	}
		552
429	switch (req->type)	553	switch (req->type)
430	{	554	{
		555	case EIO_WD_OPEN:
		556	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		557	break;
		558
431	case REQ_READDIR:	559	case EIO_READDIR:
432	{	560	{
433	SV *rv = &PL_sv_undef;	561	SV *rv = &PL_sv_undef;
434		562
435	if (req->result >= 0)	563	if (req->result >= 0)
436	{	564	{
437	int i;	565	int i;
438	char *buf = req->ptr2;	566	char *names = (char *)req->ptr2;
		567	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	568	AV *av = newAV ();
440		569
441	av_extend (av, req->result - 1);	570	av_extend (av, req->result - 1);
442		571
443	for (i = 0; i < req->result; ++i)	572	for (i = 0; i < req->result; ++i)
444	{	573	{
445	SV *sv = newSVpv (buf, 0);	574	if (req->int1 & EIO_READDIR_DENTS)
		575	{
		576	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		577
		578	if (req->int1 & EIO_READDIR_CUSTOM2)
		579	{
		580	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		581	AV *avent = newAV ();
		582
		583	av_extend (avent, 2);
		584
		585	if (!sv_type [ent->type])
		586	{
		587	sv_type [ent->type] = newSViv (ent->type);
		588	SvREADONLY_on (sv_type [ent->type]);
		589	}
		590
		591	av_store (avent, 0, namesv);
		592	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		593	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		594
		595	av_store (av, i, newRV_noinc ((SV *)avent));
		596	}
		597	else
447	av_store (av, i, sv);	598	av_store (av, i, namesv);
		599
		600	++ent;
		601	}
		602	else
		603	{
		604	SV *name = newSVpv (names, 0);
		605	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	606	names += SvCUR (name) + 1;
		607	}
449	}	608	}
450		609
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	610	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	611	}
453		612
454	PUSHs (rv);	613	PUSHs (rv);
		614
		615	if (req->int1 & EIO_READDIR_CUSTOM1)
		616	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	617	}
456	break;	618	break;
457		619
458	case REQ_OPEN:	620	case EIO_OPEN:
		621	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		622	break;
		623
		624	case EIO_STATVFS:
		625	case EIO_FSTATVFS:
459	{	626	{
460	/* convert fd to fh */	627	SV *rv = &PL_sv_undef;
461	SV *fh;	628
		629	#ifndef _WIN32
		630	if (req->result >= 0)
		631	{
		632	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		633	HV *hv = newHV ();
		634	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		635	* chooses to make it a struct.
		636	*/
		637	unsigned long fsid = 0;
		638	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
462		639
463	PUSHs (sv_2mortal (newSViv (req->result)));	640	rv = sv_2mortal (newRV_noinc ((SV *)hv));
464	PUTBACK;
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
466	SPAGAIN;
467		641
468	fh = POPs;	642	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
469	PUSHMARK (SP);	643	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		644	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		645	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		646	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		647	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		648	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		649	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		650	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		651	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		652	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		653	}
		654	#endif
		655
470	XPUSHs (fh);	656	PUSHs (rv);
471	}	657	}
		658
472	break;	659	break;
473		660
474	case REQ_GROUP:	661	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	662	req->int1 = 2; /* mark group as finished */
476		663
477	if (req->sv1)	664	if (req->sv1)
478	{	665	{
479	int i;	666	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	670	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	671	PUSHs (*av_fetch (av, i, 0));
485	}	672	}
486	break;	673	break;
487		674
488	case REQ_NOP:	675	case EIO_NOP:
489	case REQ_BUSY:	676	case EIO_BUSY:
490	break;	677	break;
491		678
492	case REQ_READLINK:	679	case EIO_READLINK:
		680	case EIO_REALPATH:
493	if (req->result > 0)	681	if (req->result > 0)
		682	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		683	break;
		684
		685	case EIO_STAT:
		686	case EIO_LSTAT:
		687	case EIO_FSTAT:
		688	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		689
		690	if (!(PL_laststatval = req->result))
		691	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		692	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		693
		694	PUSHs (sv_result);
		695	break;
		696
		697	case EIO_SEEK:
		698	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		699	break;
		700
		701	case EIO_READ:
		702	{
		703	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		704	*SvEND (req->sv2) = 0;
		705	SvPOK_only (req->sv2);
		706	SvSETMAGIC (req->sv2);
		707	PUSHs (sv_result);
		708	}
		709	break;
		710
		711	case EIO_SLURP:
		712	{
		713	if (req->result >= 0)
		714	{
		715	/* if length was originally not known, we steal the malloc'ed memory */
		716	if (req->flags & EIO_FLAG_PTR2_FREE)
		717	{
		718	req->flags &= ~EIO_FLAG_PTR2_FREE;
		719	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		720	}
		721	else
		722	{
		723	SvCUR_set (req->sv2, req->result);
		724	*SvEND (req->sv2) = 0;
		725	SvPOK_only (req->sv2);
		726	}
		727
		728	SvSETMAGIC (req->sv2);
		729	}
		730
		731	PUSHs (sv_result);
		732	}
		733	break;
		734
		735	case EIO_CUSTOM:
		736	if (req->feed == fiemap)
494	{	737	{
495	SvCUR_set (req->sv2, req->result);	738	#if HAVE_FIEMAP
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);	739	if (!req->result)
		740	{
		741	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		742
		743	if (fiemap->fm_extent_count)
		744	{
		745	AV *av = newAV ();
		746	int i;
		747
		748	while (fiemap->fm_mapped_extents)
		749	{
		750	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		751	AV *ext_av = newAV ();
		752
		753	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		754	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		755	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		756	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		757
		758	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		759	}
		760
		761	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		762	}
		763	else
		764	{
		765	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		766	PUSHs (sv_result);
		767	}
		768	}
		769	#endif
498	}	770	}
		771	else
		772	PUSHs (sv_result);
499	break;	773	break;
500		774
501	case REQ_STAT:	775	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502	case REQ_LSTAT:	776	if (req->result > 0)
503	case REQ_FSTAT:	777	SvIV_set (sv_result, 0);
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	778	/* 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		779
516	default:	780	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	781	PUSHs (sv_result);
518	break;	782	break;
519	}	783	}
520		784
521	errno = req->errorno;	785	errno = req->errorno;
522		786
523	PUTBACK;	787	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	788	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	789	SPAGAIN;
		790
		791	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		792	SvREFCNT_dec (sv_result);
		793	else
		794	sv_result_cache = sv_result;
526		795
527	FREETMPS;	796	FREETMPS;
528	LEAVE;	797	LEAVE;
		798
		799	PUTBACK;
529	}	800	}
530		801
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);	802	return !!SvTRUE (ERRSV);
546	}	803	}
547		804
		805	static void
548	static void req_destroy (aio_req req)	806	req_destroy (aio_req req)
549	{	807	{
550	if (req->self)	808	if (req->self)
551	{	809	{
552	sv_unmagic (req->self, PERL_MAGIC_ext);	810	sv_unmagic (req->self, PERL_MAGIC_ext);
553	SvREFCNT_dec (req->self);	811	SvREFCNT_dec (req->self);
554	}	812	}
555		813
556	SvREFCNT_dec (req->sv1);	814	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	815	SvREFCNT_dec (req->sv2);
		816	SvREFCNT_dec (req->sv3);
		817	SvREFCNT_dec (req->sv4);
558	SvREFCNT_dec (req->callback);	818	SvREFCNT_dec (req->callback);
559		819
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	820	free (req);
564	}	821	}
565		822
		823	static void
566	static void req_cancel_subs (aio_req grp)	824	req_cancel_subs (aio_req grp)
567	{	825	{
568	aio_req sub;
569
570	if (grp->type != REQ_GROUP)	826	if (grp->type != EIO_GROUP)
571	return;	827	return;
572		828
573	SvREFCNT_dec (grp->sv2);	829	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	830	grp->sv2 = 0;
575		831
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	832	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	833	}
579		834
580	static void req_cancel (aio_req req)	835	static void ecb_cold
		836	create_respipe (void)
581	{	837	{
582	req->flags |= FLAG_CANCELLED;	838	if (s_epipe_renew (&respipe))
583		839	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	840	}
586		841
587	static void *aio_proc (void *arg);	842	static void
588		843	poll_wait (void)
589	static void start_thread (void)
590	{	844	{
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)	845	while (eio_nreqs ())
687	{	846	{
688	int size;	847	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	848
		849	X_LOCK (EIO_POOL->reslock);
690	size = res_queue.size;	850	size = EIO_POOL->res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	851	X_UNLOCK (EIO_POOL->reslock);
692		852
693	if (size)	853	if (size)
694	return;	854	return;
695		855
696	maybe_start_thread ();	856	etp_maybe_start_thread (EIO_POOL);
697		857
698	FD_ZERO(&rfd);	858	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	859	}
703	}	860	}
704		861
705	static int poll_cb ()	862	static int
		863	poll_cb (void)
706	{	864	{
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 (;;)	865	for (;;)
720	{	866	{
721	for (;;)	867	int res = eio_poll ();
		868
		869	if (res > 0)
		870	croak (0);
		871
		872	if (!max_outstanding || max_outstanding > eio_nreqs ())
		873	return res;
		874
		875	poll_wait ();
		876	}
		877	}
		878
		879	static void ecb_cold
		880	reinit (void)
		881	{
		882	create_respipe ();
		883
		884	if (eio_init (want_poll, done_poll) < 0)
		885	croak ("IO::AIO: unable to initialise eio library");
		886	}
		887
		888	/*****************************************************************************/
		889
		890	static SV *
		891	get_cb (SV *cb_sv)
		892	{
		893	SvGETMAGIC (cb_sv);
		894	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		895	}
		896
		897	static aio_req ecb_noinline
		898	dreq (SV *callback)
		899	{
		900	SV *cb_cv;
		901	aio_req req;
		902	int req_pri = next_pri;
		903	next_pri = EIO_PRI_DEFAULT;
		904
		905	cb_cv = get_cb (callback);
		906
		907	req = calloc (sizeof (*req), 1);
		908	if (!req)
		909	croak ("out of memory during eio_req allocation");
		910
		911	req->callback = SvREFCNT_inc (cb_cv);
		912	req->pri = req_pri;
		913
		914	return req;
		915	}
		916
		917	#define dREQ \
		918	aio_req req = dreq (callback); \
		919
		920	#define REQ_SEND \
		921	PUTBACK; \
		922	req_submit (req); \
		923	SPAGAIN; \
		924	\
		925	if (GIMME_V != G_VOID) \
		926	XPUSHs (req_sv (req, aio_req_stash));
		927
		928	ecb_inline void
		929	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		930	{
		931	if (expect_false (SvROK (path)))
		932	{
		933	SV *rv = SvRV (path);
		934	SV *wdob;
		935
		936	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
722	{	937	{
723	maybe_start_thread ();	938	path = AvARRAY (rv)[1];
		939	wdob = AvARRAY (rv)[0];
724		940
725	LOCK (reslock);	941	if (SvOK (wdob))
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{	942	{
730	--npending;	943	*wd = SvAIO_WD (wdob);
731		944	*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	}	945	}
753	else	946	else
754	{	947	*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	}	948	}
		949	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		950	{
		951	*wd = (aio_wd)(long)SvIVX (rv);
		952	*wdsv = SvREFCNT_inc_NN (rv);
		953	*ptr = ".";
		954	return; /* path set to "." */
		955	}
		956	else
		957	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		958	}
778		959
779	if (nreqs <= max_outstanding)	960	*pathsv = newSVsv (path);
		961	*ptr = SvPVbyte_nolen (*pathsv);
		962	}
		963
		964	static void ecb_noinline
		965	req_set_path1 (aio_req req, SV *path)
		966	{
		967	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		968	}
		969
		970	static void ecb_noinline
		971	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		972	{
		973	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		974
		975	switch (SvTYPE (rv))
		976	{
		977	case SVt_PVIO:
		978	case SVt_PVLV:
		979	case SVt_PVGV:
		980	req->type = type_fh;
		981	req->sv1 = newSVsv (fh_or_path);
		982	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780	break;	983	break;
781		984
782	poll_wait ();	985	default:
783		986	req->type = type_path;
784	++maxreqs;	987	req_set_path1 (req, fh_or_path);
		988	break;
785	}	989	}
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	}	990	}
802		991
803	/*****************************************************************************/	992	/*****************************************************************************/
804	/* work around various missing functions */
805		993
806	#if !HAVE_PREADWRITE	994	static void
807	# define pread aio_pread	995	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	{	996	{
819	ssize_t res;	997	ts->tv_sec = value;
820	off_t ooffset;	998	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	}	999	}
831		1000
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1001	static NV
		1002	ts_get (const struct timespec *ts)
833	{	1003	{
834	ssize_t res;	1004	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	}	1005	}
1085		1006
1086	/*****************************************************************************/	1007	/*****************************************************************************/
1087		1008
1088	static void *aio_proc (void *thr_arg)	1009	XS(boot_IO__AIO) ecb_cold;
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093		1010
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	1011	MODULE = IO::AIO PACKAGE = IO::AIO
1337		1012
1338	PROTOTYPES: ENABLE	1013	PROTOTYPES: ENABLE
1339		1014
1340	BOOT:	1015	BOOT:
1341	{	1016	{
		1017	static const struct {
		1018	const char *name;
		1019	IV iv;
		1020	} *civ, const_iv[] = {
		1021	# define const_niv(name, value) { # name, (IV) value },
		1022	# define const_iv(name) { # name, (IV) name },
		1023	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1024
		1025	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1026	/* the first block can be undef if missing */
		1027	const_iv (ENOSYS)
		1028	const_iv (EXDEV)
		1029	const_iv (EBADR)
		1030
		1031	/* for lseek */
		1032	const_iv (SEEK_DATA)
		1033	const_iv (SEEK_HOLE)
		1034
		1035	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1036	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1037	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1038	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1039	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1040	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1041
		1042	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1043	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1044	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1045	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1046	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1047
		1048	/* the second block will be 0 when missing */
		1049	const_iv (O_ACCMODE)
		1050
		1051	const_iv (O_RDONLY)
		1052	const_iv (O_WRONLY)
		1053	const_iv (O_RDWR)
		1054	const_iv (O_CREAT)
		1055	const_iv (O_TRUNC)
		1056	const_iv (O_EXCL)
		1057	const_iv (O_APPEND)
		1058
		1059	const_iv (O_ASYNC)
		1060	const_iv (O_DIRECT)
		1061	const_iv (O_NOATIME)
		1062
		1063	const_iv (O_CLOEXEC)
		1064	const_iv (O_NOCTTY)
		1065	const_iv (O_NOFOLLOW)
		1066	const_iv (O_NONBLOCK)
		1067	const_iv (O_EXEC)
		1068	const_iv (O_SEARCH)
		1069	const_iv (O_DIRECTORY)
		1070	const_iv (O_DSYNC)
		1071	const_iv (O_RSYNC)
		1072	const_iv (O_SYNC)
		1073	const_iv (O_PATH)
		1074	const_iv (O_TMPFILE)
		1075	const_iv (O_TTY_INIT)
		1076
		1077	const_iv (S_IFIFO)
		1078	const_iv (S_IFCHR)
		1079	const_iv (S_IFBLK)
		1080	const_iv (S_IFLNK)
		1081	const_iv (S_IFREG)
		1082	const_iv (S_IFDIR)
		1083	const_iv (S_IFWHT)
		1084	const_iv (S_IFSOCK)
		1085	const_iv (S_IFMT)
		1086
		1087	const_iv (ST_RDONLY)
		1088	const_iv (ST_NOSUID)
		1089	const_iv (ST_NODEV)
		1090	const_iv (ST_NOEXEC)
		1091	const_iv (ST_SYNCHRONOUS)
		1092	const_iv (ST_MANDLOCK)
		1093	const_iv (ST_WRITE)
		1094	const_iv (ST_APPEND)
		1095	const_iv (ST_IMMUTABLE)
		1096	const_iv (ST_NOATIME)
		1097	const_iv (ST_NODIRATIME)
		1098	const_iv (ST_RELATIME)
		1099
		1100	const_iv (PROT_NONE)
		1101	const_iv (PROT_EXEC)
		1102	const_iv (PROT_READ)
		1103	const_iv (PROT_WRITE)
		1104
		1105	const_iv (MAP_PRIVATE)
		1106	const_iv (MAP_SHARED)
		1107	const_iv (MAP_FIXED)
		1108	const_iv (MAP_ANONYMOUS)
		1109
		1110	/* linuxish */
		1111	const_iv (MAP_LOCKED)
		1112	const_iv (MAP_NORESERVE)
		1113	const_iv (MAP_POPULATE)
		1114	const_iv (MAP_NONBLOCK)
		1115	const_iv (MAP_GROWSDOWN)
		1116	const_iv (MAP_32BIT)
		1117	const_iv (MAP_HUGETLB)
		1118	const_iv (MAP_STACK)
		1119
		1120	const_iv (MREMAP_MAYMOVE)
		1121	const_iv (MREMAP_FIXED)
		1122
		1123	const_iv (F_DUPFD_CLOEXEC)
		1124
		1125	const_iv (F_OFD_GETLK)
		1126	const_iv (F_OFD_SETLK)
		1127	const_iv (F_OFD_GETLKW)
		1128
		1129	const_iv (FIFREEZE)
		1130	const_iv (FITHAW)
		1131	const_iv (FITRIM)
		1132	const_iv (FICLONE)
		1133	const_iv (FICLONERANGE)
		1134	const_iv (FIDEDUPERANGE)
		1135
		1136	const_iv (FS_IOC_GETFLAGS)
		1137	const_iv (FS_IOC_SETFLAGS)
		1138	const_iv (FS_IOC_GETVERSION)
		1139	const_iv (FS_IOC_SETVERSION)
		1140	const_iv (FS_IOC_FIEMAP)
		1141	const_iv (FS_IOC_FSGETXATTR)
		1142	const_iv (FS_IOC_FSSETXATTR)
		1143	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1144	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1145	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1146
		1147	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1148
		1149	const_iv (FS_SECRM_FL)
		1150	const_iv (FS_UNRM_FL)
		1151	const_iv (FS_COMPR_FL)
		1152	const_iv (FS_SYNC_FL)
		1153	const_iv (FS_IMMUTABLE_FL)
		1154	const_iv (FS_APPEND_FL)
		1155	const_iv (FS_NODUMP_FL)
		1156	const_iv (FS_NOATIME_FL)
		1157	const_iv (FS_DIRTY_FL)
		1158	const_iv (FS_COMPRBLK_FL)
		1159	const_iv (FS_NOCOMP_FL)
		1160	const_iv (FS_ENCRYPT_FL)
		1161	const_iv (FS_BTREE_FL)
		1162	const_iv (FS_INDEX_FL)
		1163	const_iv (FS_JOURNAL_DATA_FL)
		1164	const_iv (FS_NOTAIL_FL)
		1165	const_iv (FS_DIRSYNC_FL)
		1166	const_iv (FS_TOPDIR_FL)
		1167	const_iv (FS_FL_USER_MODIFIABLE)
		1168
		1169	const_iv (FS_XFLAG_REALTIME)
		1170	const_iv (FS_XFLAG_PREALLOC)
		1171	const_iv (FS_XFLAG_IMMUTABLE)
		1172	const_iv (FS_XFLAG_APPEND)
		1173	const_iv (FS_XFLAG_SYNC)
		1174	const_iv (FS_XFLAG_NOATIME)
		1175	const_iv (FS_XFLAG_NODUMP)
		1176	const_iv (FS_XFLAG_RTINHERIT)
		1177	const_iv (FS_XFLAG_PROJINHERIT)
		1178	const_iv (FS_XFLAG_NOSYMLINKS)
		1179	const_iv (FS_XFLAG_EXTSIZE)
		1180	const_iv (FS_XFLAG_EXTSZINHERIT)
		1181	const_iv (FS_XFLAG_NODEFRAG)
		1182	const_iv (FS_XFLAG_FILESTREAM)
		1183	const_iv (FS_XFLAG_DAX)
		1184	const_iv (FS_XFLAG_HASATTR)
		1185
		1186	const_iv (FIEMAP_FLAG_SYNC)
		1187	const_iv (FIEMAP_FLAG_XATTR)
		1188	const_iv (FIEMAP_FLAGS_COMPAT)
		1189	const_iv (FIEMAP_EXTENT_LAST)
		1190	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1191	const_iv (FIEMAP_EXTENT_DELALLOC)
		1192	const_iv (FIEMAP_EXTENT_ENCODED)
		1193	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1194	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1195	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1196	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1197	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1198	const_iv (FIEMAP_EXTENT_MERGED)
		1199	const_iv (FIEMAP_EXTENT_SHARED)
		1200
		1201	const_iv (SPLICE_F_MOVE)
		1202	const_iv (SPLICE_F_NONBLOCK)
		1203	const_iv (SPLICE_F_MORE)
		1204	const_iv (SPLICE_F_GIFT)
		1205
		1206	const_iv (EFD_CLOEXEC)
		1207	const_iv (EFD_NONBLOCK)
		1208	const_iv (EFD_SEMAPHORE)
		1209
		1210	const_iv (CLOCK_REALTIME)
		1211	const_iv (CLOCK_MONOTONIC)
		1212	const_iv (CLOCK_BOOTTIME)
		1213	const_iv (CLOCK_REALTIME_ALARM)
		1214	const_iv (CLOCK_BOOTTIME_ALARM)
		1215
		1216	const_iv (TFD_NONBLOCK)
		1217	const_iv (TFD_CLOEXEC)
		1218
		1219	const_iv (TFD_TIMER_ABSTIME)
		1220	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1221
		1222	/* these are libeio constants, and are independent of gendef0 */
		1223	const_eio (SEEK_SET)
		1224	const_eio (SEEK_CUR)
		1225	const_eio (SEEK_END)
		1226
		1227	const_eio (MCL_FUTURE)
		1228	const_eio (MCL_CURRENT)
		1229
		1230	const_eio (MS_ASYNC)
		1231	const_eio (MS_INVALIDATE)
		1232	const_eio (MS_SYNC)
		1233
		1234	const_eio (MT_MODIFY)
		1235
		1236	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1237	const_eio (SYNC_FILE_RANGE_WRITE)
		1238	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1239
		1240	const_eio (FALLOC_FL_KEEP_SIZE)
		1241	const_eio (FALLOC_FL_PUNCH_HOLE)
		1242	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1243	const_eio (FALLOC_FL_ZERO_RANGE)
		1244	const_eio (FALLOC_FL_INSERT_RANGE)
		1245	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1246
		1247	const_eio (RENAME_NOREPLACE)
		1248	const_eio (RENAME_EXCHANGE)
		1249	const_eio (RENAME_WHITEOUT)
		1250
		1251	const_eio (READDIR_DENTS)
		1252	const_eio (READDIR_DIRS_FIRST)
		1253	const_eio (READDIR_STAT_ORDER)
		1254	const_eio (READDIR_FOUND_UNKNOWN)
		1255
		1256	const_eio (DT_UNKNOWN)
		1257	const_eio (DT_FIFO)
		1258	const_eio (DT_CHR)
		1259	const_eio (DT_DIR)
		1260	const_eio (DT_BLK)
		1261	const_eio (DT_REG)
		1262	const_eio (DT_LNK)
		1263	const_eio (DT_SOCK)
		1264	const_eio (DT_WHT)
		1265	};
		1266
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	1267	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1268	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1269	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1270	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1343		1271
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1272	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1273	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		1274
1352	create_pipe ();	1275	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354	}
1355		1276
		1277	reinit ();
		1278	}
		1279
1356	void	1280	void
		1281	reinit ()
		1282	PROTOTYPE:
		1283
		1284	void
1357	max_poll_reqs (int nreqs)	1285	max_poll_reqs (unsigned int nreqs)
1358	PROTOTYPE: $	1286	PROTOTYPE: $
1359	CODE:	1287	CODE:
1360	max_poll_reqs = nreqs;	1288	eio_set_max_poll_reqs (nreqs);
1361		1289
1362	void	1290	void
1363	max_poll_time (double nseconds)	1291	max_poll_time (double nseconds)
1364	PROTOTYPE: $	1292	PROTOTYPE: $
1365	CODE:	1293	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	1294	eio_set_max_poll_time (nseconds);
1367		1295
1368	void	1296	void
1369	min_parallel (int nthreads)	1297	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: $	1298	PROTOTYPE: $
1379	CODE:	1299	CODE:
1380	set_max_idle (nthreads);	1300	eio_set_min_parallel (nthreads);
1381		1301
1382	int	1302	void
1383	max_outstanding (int maxreqs)	1303	max_parallel (unsigned int nthreads)
1384	PROTOTYPE: $	1304	PROTOTYPE: $
1385	CODE:	1305	CODE:
1386	RETVAL = max_outstanding;	1306	eio_set_max_parallel (nthreads);
		1307
		1308	void
		1309	max_idle (unsigned int nthreads)
		1310	PROTOTYPE: $
		1311	CODE:
		1312	eio_set_max_idle (nthreads);
		1313
		1314	void
		1315	idle_timeout (unsigned int seconds)
		1316	PROTOTYPE: $
		1317	CODE:
		1318	eio_set_idle_timeout (seconds);
		1319
		1320	void
		1321	max_outstanding (unsigned int maxreqs)
		1322	PROTOTYPE: $
		1323	CODE:
1387	max_outstanding = maxreqs;	1324	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		1325
1391	void	1326	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1327	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1393	PROTOTYPE: $$$;$
1394	PPCODE:	1328	PPCODE:
1395	{	1329	{
1396	dREQ;	1330	dREQ;
1397		1331
		1332	req->type = EIO_WD_OPEN;
		1333	req_set_path1 (req, pathname);
		1334
		1335	REQ_SEND;
		1336	}
		1337
		1338	void
		1339	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1340	PPCODE:
		1341	{
		1342	dREQ;
		1343
1398	req->type = REQ_OPEN;	1344	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	1345	req_set_path1 (req, pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	1346	req->int1 = flags;
1402	req->mode = mode;	1347	req->int2 = mode;
1403		1348
1404	REQ_SEND;	1349	REQ_SEND;
1405	}	1350	}
1406		1351
1407	void	1352	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1353	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1409	PROTOTYPE: $;$
1410	ALIAS:	1354	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC	1355	aio_fsync = EIO_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC	1356	aio_fdatasync = EIO_FDATASYNC
		1357	aio_syncfs = EIO_SYNCFS
1414	PPCODE:	1358	PPCODE:
1415	{	1359	{
		1360	int fd = s_fileno_croak (fh, 0);
1416	dREQ;	1361	dREQ;
1417		1362
1418	req->type = ix;	1363	req->type = ix;
1419	req->sv1 = newSVsv (fh);	1364	req->sv1 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1365	req->int1 = fd;
1421		1366
1422	REQ_SEND (req);	1367	REQ_SEND;
1423	}	1368	}
1424		1369
1425	void	1370	void
		1371	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1372	PPCODE:
		1373	{
		1374	int fd = s_fileno_croak (fh, 0);
		1375	dREQ;
		1376
		1377	req->type = EIO_SYNC_FILE_RANGE;
		1378	req->sv1 = newSVsv (fh);
		1379	req->int1 = fd;
		1380	req->offs = offset;
		1381	req->size = nbytes;
		1382	req->int2 = flags;
		1383
		1384	REQ_SEND;
		1385	}
		1386
		1387	void
		1388	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1389	PPCODE:
		1390	{
		1391	int fd = s_fileno_croak (fh, 0);
		1392	dREQ;
		1393
		1394	req->type = EIO_FALLOCATE;
		1395	req->sv1 = newSVsv (fh);
		1396	req->int1 = fd;
		1397	req->int2 = mode;
		1398	req->offs = offset;
		1399	req->size = len;
		1400
		1401	REQ_SEND;
		1402	}
		1403
		1404	void
		1405	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1406	PPCODE:
		1407	{
		1408	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1409	int fd = s_fileno_croak (fh, 0);
		1410	dREQ;
		1411
		1412	if (expect_false (close_fd < 0))
		1413	{
		1414	int pipefd [2];
		1415
		1416	if (
		1417	#ifdef _WIN32
		1418	_pipe (pipefd, 1, _O_BINARY) < 0
		1419	#else
		1420	pipe (pipefd) < 0
		1421	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1422	#endif
		1423	|| close (pipefd [1]) < 0
		1424	)
		1425	abort (); /*D*/
		1426
		1427	close_fd = pipefd [0];
		1428	}
		1429
		1430	req->type = EIO_DUP2;
		1431	req->int1 = close_fd;
		1432	req->sv2 = newSVsv (fh);
		1433	req->int2 = fd;
		1434
		1435	REQ_SEND;
		1436	}
		1437
		1438	void
		1439	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1440	PPCODE:
		1441	{
		1442	int fd = s_fileno_croak (fh, 0);
		1443	dREQ;
		1444
		1445	req->type = EIO_SEEK;
		1446	req->sv1 = newSVsv (fh);
		1447	req->int1 = fd;
		1448	req->offs = SvVAL64 (offset);
		1449	req->int2 = whence;
		1450
		1451	REQ_SEND;
		1452	}
		1453
		1454	void
1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1455	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1427	ALIAS:	1456	ALIAS:
1428	aio_read = REQ_READ	1457	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	1458	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$
1431	PPCODE:	1459	PPCODE:
1432	{	1460	{
1433	STRLEN svlen;	1461	STRLEN svlen;
		1462	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	1463	char *svptr = SvPVbyte (data, svlen);
1435	UV len = SvUV (length);	1464	UV len = SvUV (length);
1436		1465
1437	SvUPGRADE (data, SVt_PV);
1438	SvPOK_on (data);
1439
1440	if (dataoffset < 0)	1466	if (dataoffset < 0)
1441	dataoffset += svlen;	1467	dataoffset += svlen;
1442		1468
1443	if (dataoffset < 0 || dataoffset > svlen)	1469	if (dataoffset < 0 || dataoffset > svlen)
1444	croak ("dataoffset outside of data scalar");	1470	croak ("dataoffset outside of data scalar");
1445		1471
1446	if (ix == REQ_WRITE)	1472	if (ix == EIO_WRITE)
1447	{	1473	{
1448	/* write: check length and adjust. */	1474	/* write: check length and adjust. */
1449	if (!SvOK (length) || len + dataoffset > svlen)	1475	if (!SvOK (length) || len + dataoffset > svlen)
1450	len = svlen - dataoffset;	1476	len = svlen - dataoffset;
1451	}	1477	}
1452	else	1478	else
1453	{	1479	{
1454	/* read: grow scalar as necessary */	1480	/* read: check type and grow scalar as necessary */
		1481	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1455	svptr = SvGROW (data, len + dataoffset + 1);	1482	svptr = sv_grow (data, len + dataoffset + 1);
		1483	else if (SvCUR (data) < len + dataoffset)
		1484	croak ("length + dataoffset outside of scalar, and cannot grow");
1456	}	1485	}
1457
1458	if (len < 0)
1459	croak ("length must not be negative");
1460		1486
1461	{	1487	{
1462	dREQ;	1488	dREQ;
1463		1489
1464	req->type = ix;	1490	req->type = ix;
1465	req->sv1 = newSVsv (fh);	1491	req->sv1 = newSVsv (fh);
1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1492	req->int1 = fd;
1467	: IoOFP (sv_2io (fh)));
1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1493	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469	req->size = len;	1494	req->size = len;
1470	req->sv2 = SvREFCNT_inc (data);	1495	req->sv2 = SvREFCNT_inc (data);
1471	req->ptr1 = (char *)svptr + dataoffset;	1496	req->ptr2 = (char *)svptr + dataoffset;
1472	req->stroffset = dataoffset;	1497	req->stroffset = dataoffset;
1473		1498
1474	if (!SvREADONLY (data))	1499	if (!SvREADONLY (data))
1475	{	1500	{
1476	SvREADONLY_on (data);	1501	SvREADONLY_on (data);
…		…
1480	REQ_SEND;	1505	REQ_SEND;
1481	}	1506	}
1482	}	1507	}
1483		1508
1484	void	1509	void
1485	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1510	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1486	PROTOTYPE: $$;$	1511	ALIAS:
		1512	aio_ioctl = EIO_IOCTL
		1513	aio_fcntl = EIO_FCNTL
1487	PPCODE:	1514	PPCODE:
1488	{	1515	{
1489	SV *data;	1516	int fd = s_fileno_croak (fh, 0);
1490	dREQ;	1517	char *svptr;
1491		1518
1492	data = newSV (NAME_MAX);	1519	if (SvPOK (arg) || !SvNIOK (arg))
1493	SvPOK_on (data);
1494
1495	req->type = REQ_READLINK;
1496	req->sv1 = newSVsv (path);
1497	req->ptr2 = SvPVbyte_nolen (req->sv1);
1498	req->sv2 = data;
1499	req->ptr1 = SvPVbyte_nolen (data);
1500
1501	REQ_SEND;
1502	}
1503
1504	void
1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$$;$
1507	PPCODE:
1508	{
1509	dREQ;
1510
1511	req->type = REQ_SENDFILE;
1512	req->sv1 = newSVsv (out_fh);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1514	req->sv2 = newSVsv (in_fh);
1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1516	req->offs = SvVAL64 (in_offset);
1517	req->size = length;
1518
1519	REQ_SEND;
1520	}
1521
1522	void
1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $$$;$
1525	PPCODE:
1526	{
1527	dREQ;
1528
1529	req->type = REQ_READAHEAD;
1530	req->sv1 = newSVsv (fh);
1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1532	req->offs = SvVAL64 (offset);
1533	req->size = length;
1534
1535	REQ_SEND;
1536	}
1537
1538	void
1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540	ALIAS:
1541	aio_stat = REQ_STAT
1542	aio_lstat = REQ_LSTAT
1543	PPCODE:
1544	{
1545	dREQ;
1546
1547	req->ptr2 = malloc (sizeof (Stat_t));
1548	if (!req->ptr2)
1549	{	1520	{
1550	req_destroy (req);	1521	STRLEN svlen;
1551	croak ("out of memory during aio_stat statdata allocation");	1522	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1552	}	1523	#ifdef IOCPARM_LEN
		1524	STRLEN need = IOCPARM_LEN (request);
		1525	#else
		1526	STRLEN need = 256;
		1527	#endif
1553		1528
1554	req->flags |= FLAG_PTR2_FREE;	1529	if (svlen < need)
1555	req->sv1 = newSVsv (fh_or_path);	1530	svptr = SvGROW (arg, need);
1556
1557	if (SvPOK (fh_or_path))
1558	{
1559	req->type = ix;
1560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1561	}	1531	}
1562	else	1532	else
		1533	svptr = (char *)SvIV (arg);
		1534
1563	{	1535	{
		1536	dREQ;
		1537
1564	req->type = REQ_FSTAT;	1538	req->type = ix;
1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1539	req->sv1 = newSVsv (fh);
		1540	req->int1 = fd;
		1541	req->int2 = (long)request;
		1542	req->sv2 = SvREFCNT_inc (arg);
		1543	req->ptr2 = svptr;
		1544
		1545	REQ_SEND;
1566	}	1546	}
		1547	}
		1548
		1549	void
		1550	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1551	ALIAS:
		1552	aio_readlink = EIO_READLINK
		1553	aio_realpath = EIO_REALPATH
		1554	PPCODE:
		1555	{
		1556	dREQ;
		1557
		1558	req->type = ix;
		1559	req_set_path1 (req, pathname);
1567		1560
1568	REQ_SEND;	1561	REQ_SEND;
1569	}	1562	}
1570		1563
1571	void	1564	void
		1565	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1566	PPCODE:
		1567	{
		1568	int ifd = s_fileno_croak (in_fh , 0);
		1569	int ofd = s_fileno_croak (out_fh, 1);
		1570	dREQ;
		1571
		1572	req->type = EIO_SENDFILE;
		1573	req->sv1 = newSVsv (out_fh);
		1574	req->int1 = ofd;
		1575	req->sv2 = newSVsv (in_fh);
		1576	req->int2 = ifd;
		1577	req->offs = in_offset;
		1578	req->size = length;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	int fd = s_fileno_croak (fh, 0);
		1588	dREQ;
		1589
		1590	req->type = EIO_READAHEAD;
		1591	req->sv1 = newSVsv (fh);
		1592	req->int1 = fd;
		1593	req->offs = offset;
		1594	req->size = length;
		1595
		1596	REQ_SEND;
		1597	}
		1598
		1599	void
		1600	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1601	ALIAS:
		1602	aio_stat = EIO_STAT
		1603	aio_lstat = EIO_LSTAT
		1604	aio_statvfs = EIO_STATVFS
		1605	PPCODE:
		1606	{
		1607	dREQ;
		1608
		1609	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1610
		1611	REQ_SEND;
		1612	}
		1613
		1614	UV
		1615	major (UV dev)
		1616	ALIAS:
		1617	minor = 1
		1618	CODE:
		1619	RETVAL = ix ? minor (dev) : major (dev);
		1620	OUTPUT:
		1621	RETVAL
		1622
		1623	UV
		1624	makedev (UV maj, UV min)
		1625	CODE:
		1626	RETVAL = makedev (maj, min);
		1627	OUTPUT:
		1628	RETVAL
		1629
		1630	void
1572	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1631	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1573	PPCODE:	1632	PPCODE:
1574	{	1633	{
1575	dREQ;	1634	dREQ;
1576		1635
1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1636	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1637	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579	req->sv1 = newSVsv (fh_or_path);	1638	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1580
1581	if (SvPOK (fh_or_path))
1582	{
1583	req->type = REQ_UTIME;
1584	req->ptr1 = SvPVbyte_nolen (req->sv1);
1585	}
1586	else
1587	{
1588	req->type = REQ_FUTIME;
1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590	}
1591		1639
1592	REQ_SEND;	1640	REQ_SEND;
1593	}	1641	}
1594		1642
1595	void	1643	void
1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1644	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1597	PPCODE:	1645	PPCODE:
1598	{	1646	{
1599	dREQ;	1647	dREQ;
1600		1648
1601	req->mode = mode;	1649	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1602	req->sv1 = newSVsv (fh_or_path);	1650	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1603
1604	if (SvPOK (fh_or_path))
1605	{
1606	req->type = REQ_CHMOD;
1607	req->ptr1 = SvPVbyte_nolen (req->sv1);
1608	}
1609	else
1610	{
1611	req->type = REQ_FCHMOD;
1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613	}
1614		1651
1615	REQ_SEND;	1652	REQ_SEND;
1616	}	1653	}
1617		1654
1618	void	1655	void
		1656	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1657	PPCODE:
		1658	{
		1659	dREQ;
		1660
		1661	req->int2 = mode;
		1662	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1663
		1664	REQ_SEND;
		1665	}
		1666
		1667	void
1619	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1668	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1620	PPCODE:	1669	PPCODE:
1621	{	1670	{
1622	dREQ;	1671	dREQ;
1623		1672
1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1673	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1674	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626	req->sv1 = newSVsv (fh_or_path);	1675	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1627
1628	if (SvPOK (fh_or_path))
1629	{
1630	req->type = REQ_CHOWN;
1631	req->ptr1 = SvPVbyte_nolen (req->sv1);
1632	}
1633	else
1634	{
1635	req->type = REQ_FCHOWN;
1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637	}
1638		1676
1639	REQ_SEND;	1677	REQ_SEND;
1640	}	1678	}
1641		1679
1642	void	1680	void
		1681	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1682	PPCODE:
		1683	{
		1684	dREQ;
		1685
		1686	req->type = EIO_READDIR;
		1687	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1688
		1689	if (flags & EIO_READDIR_DENTS)
		1690	req->int1 |= EIO_READDIR_CUSTOM2;
		1691
		1692	req_set_path1 (req, pathname);
		1693
		1694	REQ_SEND;
		1695	}
		1696
		1697	void
		1698	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1699	PPCODE:
		1700	{
		1701	dREQ;
		1702
		1703	req->type = EIO_MKDIR;
		1704	req->int2 = mode;
		1705	req_set_path1 (req, pathname);
		1706
		1707	REQ_SEND;
		1708	}
		1709
		1710	void
1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1711	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1644	ALIAS:	1712	ALIAS:
1645	aio_unlink = REQ_UNLINK	1713	aio_unlink = EIO_UNLINK
1646	aio_rmdir = REQ_RMDIR	1714	aio_rmdir = EIO_RMDIR
1647	aio_readdir = REQ_READDIR	1715	aio_readdir = EIO_READDIR
1648	PPCODE:	1716	PPCODE:
1649	{	1717	{
1650	dREQ;	1718	dREQ;
1651		1719
1652	req->type = ix;	1720	req->type = ix;
1653	req->sv1 = newSVsv (pathname);	1721	req_set_path1 (req, pathname);
1654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1655		1722
1656	REQ_SEND;	1723	REQ_SEND;
1657	}	1724	}
1658		1725
1659	void	1726	void
1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1727	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1728	ALIAS:
		1729	aio_link = EIO_LINK
		1730	aio_symlink = EIO_SYMLINK
		1731	aio_rename = EIO_RENAME
1661	PPCODE:	1732	PPCODE:
1662	{	1733	{
1663	dREQ;	1734	eio_wd wd2 = 0;
1664
1665	req->type = REQ_MKDIR;
1666	req->sv1 = newSVsv (pathname);
1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
1668	req->mode = mode;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675	ALIAS:
1676	aio_link = REQ_LINK
1677	aio_symlink = REQ_SYMLINK
1678	aio_rename = REQ_RENAME
1679	PPCODE:
1680	{
1681	dREQ;	1735	dREQ;
1682		1736
1683	req->type = ix;	1737	req->type = ix;
1684	req->sv2 = newSVsv (oldpath);	1738	req_set_path1 (req, oldpath);
1685	req->ptr2 = SvPVbyte_nolen (req->sv2);	1739	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1686	req->sv1 = newSVsv (newpath);	1740	req->int3 = (long)wd2;
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688		1741
1689	REQ_SEND;	1742	REQ_SEND;
1690	}	1743	}
1691		1744
1692	void	1745	void
1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1746	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1694	PPCODE:	1747	PPCODE:
1695	{	1748	{
		1749	eio_wd wd2 = 0;
1696	dREQ;	1750	dREQ;
1697		1751
1698	req->type = REQ_MKNOD;	1752	req->type = EIO_RENAME;
1699	req->sv1 = newSVsv (pathname);	1753	req_set_path1 (req, oldpath);
1700	req->ptr1 = SvPVbyte_nolen (req->sv1);	1754	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1701	req->mode = (mode_t)mode;	1755	req->int2 = flags;
1702	req->offs = dev;	1756	req->int3 = (long)wd2;
1703		1757
1704	REQ_SEND;	1758	REQ_SEND;
1705	}	1759	}
1706		1760
1707	void	1761	void
1708	aio_busy (double delay, SV *callback=&PL_sv_undef)	1762	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1709	PPCODE:	1763	PPCODE:
1710	{	1764	{
1711	dREQ;	1765	dREQ;
		1766
		1767	req->type = EIO_MKNOD;
		1768	req->int2 = (mode_t)mode;
		1769	req->offs = dev;
		1770	req_set_path1 (req, pathname);
		1771
		1772	REQ_SEND;
		1773	}
1712		1774
		1775	void
		1776	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1777	ALIAS:
		1778	aio_mtouch = EIO_MTOUCH
		1779	aio_msync = EIO_MSYNC
		1780	PPCODE:
		1781	{
		1782	STRLEN svlen;
		1783	char *svptr = SvPVbyte (data, svlen);
		1784	UV len = SvUV (length);
		1785
		1786	if (flags < 0)
		1787	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1788
		1789	if (offset < 0)
		1790	offset += svlen;
		1791
		1792	if (offset < 0 || offset > svlen)
		1793	croak ("offset outside of scalar");
		1794
		1795	if (!SvOK (length) || len + offset > svlen)
		1796	len = svlen - offset;
		1797
		1798	{
		1799	dREQ;
		1800
		1801	req->type = ix;
		1802	req->sv2 = SvREFCNT_inc (data);
		1803	req->ptr2 = (char *)svptr + offset;
		1804	req->size = len;
		1805	req->int1 = flags;
		1806
		1807	REQ_SEND;
		1808	}
		1809	}
		1810
		1811	void
		1812	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1813	PPCODE:
		1814	{
		1815	STRLEN svlen;
		1816	char *svptr = SvPVbyte (data, svlen);
		1817	UV len = SvUV (length);
		1818
		1819	if (offset < 0)
		1820	offset += svlen;
		1821
		1822	if (offset < 0 || offset > svlen)
		1823	croak ("offset outside of scalar");
		1824
		1825	if (!SvOK (length) || len + offset > svlen)
		1826	len = svlen - offset;
		1827
		1828	{
		1829	dREQ;
		1830
		1831	req->type = EIO_MLOCK;
		1832	req->sv2 = SvREFCNT_inc (data);
		1833	req->ptr2 = (char *)svptr + offset;
		1834	req->size = len;
		1835
		1836	REQ_SEND;
		1837	}
		1838	}
		1839
		1840	void
		1841	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1842	PPCODE:
		1843	{
		1844	dREQ;
		1845
		1846	req->type = EIO_MLOCKALL;
		1847	req->int1 = flags;
		1848
		1849	REQ_SEND;
		1850	}
		1851
		1852	void
		1853	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1854	PPCODE:
		1855	{
		1856	int fd = s_fileno_croak (fh, 0);
		1857	dREQ;
		1858
		1859	req->type = EIO_CUSTOM;
		1860	req->sv1 = newSVsv (fh);
		1861	req->int1 = fd;
		1862
		1863	req->feed = fiemap;
		1864	#if HAVE_FIEMAP
		1865	/* keep our fingers crossed that the next two types are 64 bit */
		1866	req->offs = start;
		1867	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1868	req->int2 = flags;
		1869	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1870	#endif
		1871
		1872	REQ_SEND;
		1873	}
		1874
		1875	void
		1876	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1877	PPCODE:
		1878	{
		1879	char *svptr = 0;
		1880
		1881	sv_clear_foreign (data);
		1882
		1883	if (length) /* known length, directly read into scalar */
		1884	{
		1885	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1886	svptr = sv_grow (data, length + 1);
		1887	else if (SvCUR (data) < length)
		1888	croak ("length outside of scalar, and cannot grow");
		1889	else
		1890	svptr = SvPVbyte_nolen (data);
		1891	}
		1892
		1893	{
		1894	dREQ;
		1895
		1896	req->type = EIO_SLURP;
		1897	req_set_path1 (req, pathname);
		1898	req->offs = offset;
		1899	req->size = length;
		1900	req->sv2 = SvREFCNT_inc (data);
		1901	req->ptr2 = svptr;
		1902
		1903	if (!SvREADONLY (data))
		1904	{
		1905	SvREADONLY_on (data);
		1906	req->flags |= FLAG_SV2_RO_OFF;
		1907	}
		1908
		1909	REQ_SEND;
		1910	}
		1911	}
		1912
		1913	void
		1914	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1915	PPCODE:
		1916	{
		1917	dREQ;
		1918
1713	req->type = REQ_BUSY;	1919	req->type = EIO_BUSY;
1714	req->nv1 = delay < 0. ? 0. : delay;	1920	req->nv1 = delay < 0. ? 0. : delay;
1715		1921
1716	REQ_SEND;	1922	REQ_SEND;
1717	}	1923	}
1718		1924
1719	void	1925	void
1720	aio_group (SV *callback=&PL_sv_undef)	1926	aio_group (SV *callback = &PL_sv_undef)
1721	PROTOTYPE: ;$
1722	PPCODE:	1927	PPCODE:
1723	{	1928	{
1724	dREQ;	1929	dREQ;
1725		1930
1726	req->type = REQ_GROUP;	1931	req->type = EIO_GROUP;
1727		1932
		1933	PUTBACK;
1728	req_send (req);	1934	req_submit (req);
		1935	SPAGAIN;
		1936
1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1937	XPUSHs (req_sv (req, aio_grp_stash));
1730	}	1938	}
1731		1939
1732	void	1940	void
1733	aio_nop (SV *callback=&PL_sv_undef)	1941	aio_nop (SV *callback = &PL_sv_undef)
		1942	ALIAS:
		1943	aio_nop = EIO_NOP
		1944	aio_sync = EIO_SYNC
1734	PPCODE:	1945	PPCODE:
1735	{	1946	{
1736	dREQ;	1947	dREQ;
1737		1948
1738	req->type = REQ_NOP;	1949	req->type = ix;
1739		1950
1740	REQ_SEND;	1951	REQ_SEND;
1741	}	1952	}
1742		1953
1743	int	1954	int
1744	aioreq_pri (int pri = 0)	1955	aioreq_pri (int pri = NO_INIT)
1745	PROTOTYPE: ;$
1746	CODE:	1956	CODE:
1747	RETVAL = next_pri - PRI_BIAS;	1957	RETVAL = next_pri;
1748	if (items > 0)	1958	if (items > 0)
1749	{	1959	{
1750	if (pri < PRI_MIN) pri = PRI_MIN;	1960	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751	if (pri > PRI_MAX) pri = PRI_MAX;	1961	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752	next_pri = pri + PRI_BIAS;	1962	next_pri = pri;
1753	}	1963	}
1754	OUTPUT:	1964	OUTPUT:
1755	RETVAL	1965	RETVAL
1756		1966
1757	void	1967	void
1758	aioreq_nice (int nice = 0)	1968	aioreq_nice (int nice = 0)
1759	CODE:	1969	CODE:
1760	nice = next_pri - nice;	1970	nice = next_pri - nice;
1761	if (nice < PRI_MIN) nice = PRI_MIN;	1971	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762	if (nice > PRI_MAX) nice = PRI_MAX;	1972	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763	next_pri = nice + PRI_BIAS;	1973	next_pri = nice;
1764		1974
1765	void	1975	void
1766	flush ()	1976	flush ()
1767	PROTOTYPE:
1768	CODE:	1977	CODE:
1769	while (nreqs)	1978	while (eio_nreqs ())
1770	{	1979	{
1771	poll_wait ();	1980	poll_wait ();
1772	poll_cb ();	1981	poll_cb ();
1773	}	1982	}
1774		1983
1775	int	1984	int
1776	poll()	1985	poll ()
1777	PROTOTYPE:
1778	CODE:	1986	CODE:
1779	poll_wait ();	1987	poll_wait ();
1780	RETVAL = poll_cb ();	1988	RETVAL = poll_cb ();
1781	OUTPUT:	1989	OUTPUT:
1782	RETVAL	1990	RETVAL
1783		1991
1784	int	1992	int
1785	poll_fileno()	1993	poll_fileno ()
1786	PROTOTYPE:
1787	CODE:	1994	CODE:
1788	RETVAL = respipe [0];	1995	RETVAL = s_epipe_fd (&respipe);
1789	OUTPUT:	1996	OUTPUT:
1790	RETVAL	1997	RETVAL
1791		1998
1792	int	1999	int
1793	poll_cb(...)	2000	poll_cb (...)
1794	PROTOTYPE:	2001	PROTOTYPE:
1795	CODE:	2002	CODE:
1796	RETVAL = poll_cb ();	2003	RETVAL = poll_cb ();
1797	OUTPUT:	2004	OUTPUT:
1798	RETVAL	2005	RETVAL
1799		2006
1800	void	2007	void
1801	poll_wait()	2008	poll_wait ()
1802	PROTOTYPE:
1803	CODE:	2009	CODE:
1804	poll_wait ();	2010	poll_wait ();
1805		2011
1806	void
1807	setsig (int signum = SIGIO)
1808	PROTOTYPE: ;$
1809	CODE:
1810	{
1811	if (block_sig_level)
1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814	LOCK (reslock);
1815	main_tid = pthread_self ();
1816	main_sig = signum;
1817	UNLOCK (reslock);
1818
1819	if (main_sig && npending)
1820	pthread_kill (main_tid, main_sig);
1821	}
1822
1823	void
1824	aio_block (SV *cb)
1825	PROTOTYPE: &
1826	PPCODE:
1827	{
1828	int count;
1829
1830	block_sig ();
1831	PUSHMARK (SP);
1832	PUTBACK;
1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834	SPAGAIN;
1835	unblock_sig ();
1836
1837	if (SvTRUE (ERRSV))
1838	croak (0);
1839
1840	XSRETURN (count);
1841	}
1842
1843	int	2012	int
1844	nreqs()	2013	nreqs ()
1845	PROTOTYPE:
1846	CODE:	2014	CODE:
1847	RETVAL = nreqs;	2015	RETVAL = eio_nreqs ();
1848	OUTPUT:	2016	OUTPUT:
1849	RETVAL	2017	RETVAL
1850		2018
1851	int	2019	int
1852	nready()	2020	nready ()
1853	PROTOTYPE:
1854	CODE:	2021	CODE:
1855	RETVAL = get_nready ();	2022	RETVAL = eio_nready ();
1856	OUTPUT:	2023	OUTPUT:
1857	RETVAL	2024	RETVAL
1858		2025
1859	int	2026	int
1860	npending()	2027	npending ()
1861	PROTOTYPE:
1862	CODE:	2028	CODE:
1863	RETVAL = get_npending ();	2029	RETVAL = eio_npending ();
1864	OUTPUT:	2030	OUTPUT:
1865	RETVAL	2031	RETVAL
1866		2032
1867	int	2033	int
1868	nthreads()	2034	nthreads ()
1869	PROTOTYPE:
1870	CODE:	2035	CODE:
1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);	2036	RETVAL = eio_nthreads ();
1872	RETVAL = started;
1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874	OUTPUT:	2037	OUTPUT:
1875	RETVAL	2038	RETVAL
1876		2039
		2040	int
		2041	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2042	CODE:
		2043	RETVAL = posix_fadvise (fh, offset, length, advice);
		2044	OUTPUT:
		2045	RETVAL
		2046
		2047	IV
		2048	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2049	CODE:
		2050	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2051	OUTPUT:
		2052	RETVAL
		2053
		2054	void
		2055	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2056	PPCODE:
		2057	sv_clear_foreign (scalar);
		2058	{
		2059	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2060	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2061	if (addr == (void *)-1)
		2062	XSRETURN_NO;
		2063
		2064	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2065
		2066	if (!(prot & PROT_WRITE))
		2067	SvREADONLY_on (scalar);
		2068
		2069	XSRETURN_YES;
		2070	}
		2071
		2072	void
		2073	munmap (SV *scalar)
		2074	CODE:
		2075	sv_clear_foreign (scalar);
		2076
		2077	SV *
		2078	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2079	CODE:
		2080	{
		2081	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2082	void *new;
		2083
		2084	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2085	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2086
		2087	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2088
		2089	RETVAL = &PL_sv_no;
		2090
		2091	if (new != (void *)-1)
		2092	{
		2093	RETVAL = new == (void *)mg->mg_ptr
		2094	? newSVpvn ("0 but true", 10)
		2095	: &PL_sv_yes;
		2096
		2097	mg->mg_ptr = (char *)new;
		2098	mg->mg_obj = (SV *)new_length;
		2099
		2100	SvPVX (scalar) = mg->mg_ptr;
		2101	SvCUR_set (scalar, new_length);
		2102	}
		2103	}
		2104	OUTPUT:
		2105	RETVAL
		2106
		2107	int
		2108	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2109	ALIAS:
		2110	mprotect = 1
		2111	CODE:
		2112	{
		2113	STRLEN svlen;
		2114	void *addr = SvPVbyte (scalar, svlen);
		2115	STRLEN len = SvUV (length);
		2116
		2117	if (offset < 0)
		2118	offset += svlen;
		2119
		2120	if (offset < 0 || offset > svlen)
		2121	croak ("offset outside of scalar");
		2122
		2123	if (!SvOK (length) || len + offset > svlen)
		2124	len = svlen - offset;
		2125
		2126	addr = (void *)(((intptr_t)addr) + offset);
		2127	eio_page_align (&addr, &len);
		2128
		2129	switch (ix)
		2130	{
		2131	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2132	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2133	}
		2134	}
		2135	OUTPUT:
		2136	RETVAL
		2137
		2138	int
		2139	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2140	CODE:
		2141	{
		2142	STRLEN svlen;
		2143	void *addr = SvPVbyte (scalar, svlen);
		2144	size_t len = SvUV (length);
		2145
		2146	if (offset < 0)
		2147	offset += svlen;
		2148
		2149	if (offset < 0 || offset > svlen)
		2150	croak ("offset outside of scalar");
		2151
		2152	if (!SvOK (length) || len + offset > svlen)
		2153	len = svlen - offset;
		2154
		2155	addr = (void *)(((intptr_t)addr) + offset);
		2156	eio_page_align (&addr, &len);
		2157	#if _POSIX_MEMLOCK_RANGE
		2158	RETVAL = munlock (addr, len);
		2159	#else
		2160	RETVAL = EIO_ENOSYS ();
		2161	#endif
		2162	}
		2163	OUTPUT:
		2164	RETVAL
		2165
		2166	int
		2167	munlockall ()
		2168	CODE:
		2169	#if _POSIX_MEMLOCK
		2170	munlockall ();
		2171	#else
		2172	RETVAL = EIO_ENOSYS ();
		2173	#endif
		2174	OUTPUT:
		2175	RETVAL
		2176
		2177	int
		2178	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2179	CODE:
		2180	{
		2181	#if HAVE_LINUX_SPLICE
		2182	loff_t off_in_, off_out_;
		2183	RETVAL = splice (
		2184	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2185	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2186	length, flags
		2187	);
		2188	#else
		2189	RETVAL = EIO_ENOSYS ();
		2190	#endif
		2191	}
		2192	OUTPUT:
		2193	RETVAL
		2194
		2195	int
		2196	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2197	CODE:
		2198	#if HAVE_LINUX_SPLICE
		2199	RETVAL = tee (rfh, wfh, length, flags);
		2200	#else
		2201	RETVAL = EIO_ENOSYS ();
		2202	#endif
		2203	OUTPUT:
		2204	RETVAL
		2205
		2206	int
		2207	pipesize (aio_rfd rfh, int new_size = -1)
		2208	PROTOTYPE: $;$
		2209	CODE:
		2210	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2211	if (new_size >= 0)
		2212	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2213	else
		2214	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2215	#else
		2216	errno = ENOSYS;
		2217	RETVAL = -1;
		2218	#endif
		2219	OUTPUT:
		2220	RETVAL
		2221
		2222	void
		2223	pipe2 (int flags = 0)
		2224	PROTOTYPE: ;$
		2225	PPCODE:
		2226	{
		2227	int fd[2];
		2228	int res;
		2229
		2230	if (flags)
		2231	#if HAVE_PIPE2
		2232	res = pipe2 (fd, flags);
		2233	#else
		2234	res = (errno = ENOSYS, -1);
		2235	#endif
		2236	else
		2237	res = pipe (fd);
		2238
		2239	if (!res)
		2240	{
		2241	EXTEND (SP, 2);
		2242	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2243	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2244	}
		2245	}
		2246
		2247	void
		2248	eventfd (unsigned int initval = 0, int flags = 0)
		2249	PPCODE:
		2250	{
		2251	int fd;
		2252	#if HAVE_EVENTFD
		2253	fd = eventfd (initval, flags);
		2254	#else
		2255	fd = (errno = ENOSYS, -1);
		2256	#endif
		2257
		2258	XPUSHs (newmortalFH (fd, O_RDWR));
		2259	}
		2260
		2261	void
		2262	timerfd_create (int clockid, int flags = 0)
		2263	PPCODE:
		2264	{
		2265	int fd;
		2266	#if HAVE_TIMERFD
		2267	fd = timerfd_create (clockid, flags);
		2268	#else
		2269	fd = (errno = ENOSYS, -1);
		2270	#endif
		2271
		2272	XPUSHs (newmortalFH (fd, O_RDWR));
		2273	}
		2274
		2275	void
		2276	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2277	PPCODE:
		2278	{
		2279	int fd = s_fileno_croak (fh, 0);
		2280	#if HAVE_TIMERFD
		2281	int res;
		2282	struct itimerspec its, ots;
		2283
		2284	ts_set (&its.it_interval, interval);
		2285	ts_set (&its.it_value , value);
		2286	res = timerfd_settime (fd, flags, &its, &ots);
		2287
		2288	if (!res)
		2289	{
		2290	EXTEND (SP, 2);
		2291	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2292	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2293	}
		2294	#else
		2295	errno = ENOSYS;
		2296	#endif
		2297	}
		2298
		2299	void
		2300	timerfd_gettime (SV *fh)
		2301	PPCODE:
		2302	{
		2303	int fd = s_fileno_croak (fh, 0);
		2304	#if HAVE_TIMERFD
		2305	int res;
		2306	struct itimerspec ots;
		2307	res = timerfd_gettime (fd, &ots);
		2308
		2309	if (!res)
		2310	{
		2311	EXTEND (SP, 2);
		2312	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2313	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2314	}
		2315	#else
		2316	errno = ENOSYS;
		2317	#endif
		2318	}
		2319
		2320	UV
		2321	get_fdlimit ()
		2322	CODE:
		2323	#if HAVE_RLIMITS
		2324	struct rlimit rl;
		2325	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2326	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2327	#endif
		2328	XSRETURN_UNDEF;
		2329	OUTPUT:
		2330	RETVAL
		2331
		2332	void
		2333	min_fdlimit (UV limit = 0x7fffffffU)
		2334	CODE:
		2335	{
		2336	#if HAVE_RLIMITS
		2337	struct rlimit rl;
		2338	rlim_t orig_rlim_max;
		2339	UV bit;
		2340
		2341	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2342	goto fail;
		2343
		2344	if (rl.rlim_cur == RLIM_INFINITY)
		2345	XSRETURN_YES;
		2346
		2347	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2348
		2349	if (rl.rlim_cur < limit)
		2350	{
		2351	rl.rlim_cur = limit;
		2352
		2353	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2354	rl.rlim_max = rl.rlim_cur;
		2355	}
		2356
		2357	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2358	XSRETURN_YES;
		2359
		2360	if (errno == EPERM)
		2361	{
		2362	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2363	/* our limit overflows a system-wide limit */
		2364	/* try an adaptive algorithm, but do not lower the hardlimit */
		2365	rl.rlim_max = 0;
		2366	for (bit = 0x40000000U; bit; bit >>= 1)
		2367	{
		2368	rl.rlim_max |= bit;
		2369	rl.rlim_cur = rl.rlim_max;
		2370
		2371	/* nevr decrease the hard limit */
		2372	if (rl.rlim_max < orig_rlim_max)
		2373	break;
		2374
		2375	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2376	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2377	}
		2378
		2379	/* now, raise the soft limit to the max permitted */
		2380	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2381	{
		2382	rl.rlim_cur = rl.rlim_max;
		2383	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2384	errno = EPERM;
		2385	}
		2386	}
		2387	#endif
		2388	fail:
		2389	XSRETURN_UNDEF;
		2390	}
		2391
		2392	void _on_next_submit (SV *cb)
		2393	CODE:
		2394	SvREFCNT_dec (on_next_submit);
		2395	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2396
1877	PROTOTYPES: DISABLE	2397	PROTOTYPES: DISABLE
		2398
		2399	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2400
		2401	BOOT:
		2402	{
		2403	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2404	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2405	}
		2406
		2407	void
		2408	DESTROY (SV *self)
		2409	CODE:
		2410	{
		2411	aio_wd wd = SvAIO_WD (self);
		2412	#if HAVE_AT
		2413	{
		2414	SV *callback = &PL_sv_undef;
		2415	dREQ; /* clobbers next_pri :/ */
		2416	next_pri = req->pri; /* restore next_pri */
		2417	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2418	req->type = EIO_WD_CLOSE;
		2419	req->wd = wd;
		2420	REQ_SEND;
		2421	}
		2422	#else
		2423	eio_wd_close_sync (wd);
		2424	#endif
		2425	}
1878		2426
1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2427	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880		2428
1881	void	2429	void
1882	cancel (aio_req_ornot req)	2430	cancel (aio_req_ornot req)
1883	CODE:	2431	CODE:
1884	req_cancel (req);	2432	eio_cancel (req);
1885		2433
1886	void	2434	void
1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2435	cb (aio_req_ornot req, SV *callback = NO_INIT)
1888	CODE:	2436	PPCODE:
		2437	{
		2438	if (GIMME_V != G_VOID)
		2439	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2440
		2441	if (items > 1)
		2442	{
		2443	SV *cb_cv = get_cb (callback);
		2444
1889	SvREFCNT_dec (req->callback);	2445	SvREFCNT_dec (req->callback);
1890	req->callback = newSVsv (callback);	2446	req->callback = SvREFCNT_inc (cb_cv);
		2447	}
		2448	}
1891		2449
1892	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2450	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893		2451
1894	void	2452	void
1895	add (aio_req grp, ...)	2453	add (aio_req grp, ...)
1896	PPCODE:	2454	PPCODE:
1897	{	2455	{
1898	int i;	2456	int i;
1899	aio_req req;
1900
1901	if (main_sig && !block_sig_level)
1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903		2457
1904	if (grp->int1 == 2)	2458	if (grp->int1 == 2)
1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2459	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906		2460
1907	for (i = 1; i < items; ++i )	2461	for (i = 1; i < items; ++i )
1908	{	2462	{
		2463	aio_req req;
		2464
1909	if (GIMME_V != G_VOID)	2465	if (GIMME_V != G_VOID)
1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2466	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911		2467
1912	req = SvAIO_REQ (ST (i));	2468	req = SvAIO_REQ (ST (i));
1913		2469
1914	if (req)	2470	if (req)
1915	{	2471	eio_grp_add (grp, req);
1916	++grp->size;
1917	req->grp = grp;
1918
1919	req->grp_prev = 0;
1920	req->grp_next = grp->grp_first;
1921
1922	if (grp->grp_first)
1923	grp->grp_first->grp_prev = req;
1924
1925	grp->grp_first = req;
1926	}
1927	}	2472	}
1928	}	2473	}
1929		2474
1930	void	2475	void
1931	cancel_subs (aio_req_ornot req)	2476	cancel_subs (aio_req_ornot req)
…		…
1940	AV *av;	2485	AV *av;
1941		2486
1942	grp->errorno = errno;	2487	grp->errorno = errno;
1943		2488
1944	av = newAV ();	2489	av = newAV ();
		2490	av_extend (av, items - 1);
1945		2491
1946	for (i = 1; i < items; ++i )	2492	for (i = 1; i < items; ++i )
1947	av_push (av, newSVsv (ST (i)));	2493	av_push (av, newSVsv (ST (i)));
1948		2494
1949	SvREFCNT_dec (grp->sv1);	2495	SvREFCNT_dec (grp->sv1);
…		…
1956	grp->errorno = errorno;	2502	grp->errorno = errorno;
1957		2503
1958	void	2504	void
1959	limit (aio_req grp, int limit)	2505	limit (aio_req grp, int limit)
1960	CODE:	2506	CODE:
1961	grp->int2 = limit;	2507	eio_grp_limit (grp, limit);
1962	aio_grp_feed (grp);
1963		2508
1964	void	2509	void
1965	feed (aio_req grp, SV *callback=&PL_sv_undef)	2510	feed (aio_req grp, SV *callback = &PL_sv_undef)
1966	CODE:	2511	CODE:
1967	{	2512	{
1968	SvREFCNT_dec (grp->sv2);	2513	SvREFCNT_dec (grp->sv2);
1969	grp->sv2 = newSVsv (callback);	2514	grp->sv2 = newSVsv (callback);
		2515	grp->feed = aio_grp_feed;
1970		2516
1971	if (grp->int2 <= 0)	2517	if (grp->int2 <= 0)
1972	grp->int2 = 2;	2518	grp->int2 = 2;
1973		2519
1974	aio_grp_feed (grp);	2520	eio_grp_limit (grp, grp->int2);
1975	}	2521	}
1976		2522

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