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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC vs.
Revision 1.240 by root, Tue Feb 23 19:42:59 2016 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14	#include <limits.h>	16	#include <limits.h>
15	#include <fcntl.h>	17	#include <fcntl.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
18	#ifdef _WIN32	46	#ifdef _WIN32
19		47
20	# define SIGIO 0	48	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	49
22	#undef malloc	50	#undef malloc
23	#undef free	51	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	52	#undef open
27	# undef read	53	#undef read
28	# undef write	54	#undef write
		55	#undef send
		56	#undef recv
29	# undef stat	57	#undef stat
		58	#undef lstat
30	# undef fstat	59	#undef fstat
31	# define lstat stat
32	# undef truncate	60	#undef truncate
33	# undef ftruncate	61	#undef ftruncate
34	# undef open	62	#undef open
		63	#undef link
35	# undef close	64	#undef close
36	# undef unlink	65	#undef unlink
		66	#undef mkdir
37	# undef rmdir	67	#undef rmdir
38	# undef rename	68	#undef rename
39	# undef lseek	69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
40		79
41	# define chown(a,b,c) (errno = ENOSYS, -1)	80	#define EIO_STRUCT_STAT struct _stati64
42	# define fchown(a,b,c) (errno = ENOSYS, -1)	81	#define EIO_STRUCT_STATI64
43	# define fchmod(a,b) (errno = ENOSYS, -1)
44	# define symlink(a,b) (errno = ENOSYS, -1)
45	# define readlink(a,b,c) (errno = ENOSYS, -1)
46	# define mknod(a,b,c) (errno = ENOSYS, -1)
47	# define truncate(a,b) (errno = ENOSYS, -1)
48	# define ftruncate(fd,o) chsize ((fd), (o))
49	# define fsync(fd) _commit (fd)
50	# define opendir(fd) (errno = ENOSYS, 0)
51	# define readdir(fd) (errno = ENOSYS, -1)
52	# define closedir(fd) (errno = ENOSYS, -1)
53	# define mkdir(a,b) mkdir (a)
54		82
55	#else	83	#else
56		84
57	# include "autoconf/config.h"
58	# include <sys/time.h>	85	#include <sys/time.h>
59	# include <sys/select.h>	86	#include <sys/select.h>
60	# include <unistd.h>	87	#include <unistd.h>
61	# include <utime.h>	88	#include <utime.h>
62	# include <signal.h>	89	#include <signal.h>
63	typedef struct dirent X_DIRENT;
64		90
65	#endif	91	#define EIO_STRUCT_STAT Stat_t
66		92
67	#if HAVE_SENDFILE	93	#endif
68	# if __linux	94
69	# include <sys/sendfile.h>	95	/*****************************************************************************/
70	# elif __freebsd	96
71	# include <sys/socket.h>	97	#if __GNUC__ >= 3
72	# include <sys/uio.h>	98	# define expect(expr,value) __builtin_expect ((expr),(value))
73	# elif __hpux	99	#else
74	# include <sys/socket.h>	100	# define expect(expr,value) (expr)
75	# elif __solaris /* not yet */	101	#endif
76	# include <sys/sendfile.h>	102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV *sv1, *sv2; \
		117	SV *sv3, *sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
77	# else	144	# else
78	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
79	# endif	146	# endif
80	#endif	147	#endif
81		148
82	/* number of seconds after which idle threads exit */	149	/* defines all sorts of constants to 0 unless they are already defined */
83	#define IDLE_TIMEOUT 10	150	/* also provides const_iv_ and const_niv_ macros for them */
		151	#include "def0.h"
84		152
85	/* used for struct dirent, AIX doesn't provide it */	153	#ifndef makedev
86	#ifndef NAME_MAX	154	# define makedev(maj,min) (((maj) << 8) | (min))
87	# define NAME_MAX 4096
88	#endif	155	#endif
89		156	#ifndef major
90	/* buffer size for various temporary buffers */	157	# define major(dev) ((dev) >> 8)
91	#define AIO_BUFSIZE 65536
92
93	/* use NV for 32 bit perls as it allows larger offsets */
94	#if IVSIZE >= 8
95	# define SvVAL64 SvIV
96	#else
97	# define SvVAL64 SvNV
98	#endif	158	#endif
		159	#ifndef minor
		160	# define minor(dev) ((dev) & 0xff)
		161	#endif
99		162
100	#define dBUF \	163	#if PAGESIZE <= 0
101	char *aio_buf; \	164	# define PAGESIZE sysconf (_SC_PAGESIZE)
102	X_LOCK (wrklock); \	165	#endif
103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
104	X_UNLOCK (wrklock); \
105	if (!aio_buf) \
106	return -1;
107		166
108	typedef SV SV8; /* byte-sv, used for argument-checking */	167	/*****************************************************************************/
109		168
110	enum {	169	static void
111	REQ_QUIT,	170	fiemap (eio_req *req)
112	REQ_OPEN, REQ_CLOSE,
113	REQ_READ, REQ_WRITE,
114	REQ_READAHEAD, REQ_SENDFILE,
115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
116	REQ_TRUNCATE, REQ_FTRUNCATE,
117	REQ_UTIME, REQ_FUTIME,
118	REQ_CHMOD, REQ_FCHMOD,
119	REQ_CHOWN, REQ_FCHOWN,
120	REQ_FSYNC, REQ_FDATASYNC,
121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
122	REQ_MKNOD, REQ_READDIR,
123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
124	REQ_GROUP, REQ_NOP,
125	REQ_BUSY,
126	};
127
128	#define AIO_REQ_KLASS "IO::AIO::REQ"
129	#define AIO_GRP_KLASS "IO::AIO::GRP"
130
131	typedef struct aio_cb
132	{	171	{
133	struct aio_cb *volatile next;	172	req->result = -1;
134		173
135	SV *callback;	174	#if HAVE_FIEMAP
136	SV *sv1, *sv2;	175	/* assume some c99 */
137	void *ptr1, *ptr2;	176	struct fiemap *fiemap = 0;
138	off_t offs;	177	size_t end_offset;
139	size_t size;	178	int count = req->int3;
140	ssize_t result;
141	double nv1, nv2;
142		179
143	STRLEN stroffset;	180	req->flags |= EIO_FLAG_PTR1_FREE;
144	int type;
145	int int1, int2, int3;
146	int errorno;
147	mode_t mode; /* open */
148		181
149	unsigned char flags;	182	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
150	unsigned char pri;	183	/* increase in 3.5kb steps */
		184	if (count < 0)
		185	count = 8;
151		186
152	SV *self; /* the perl counterpart of this request, if any */	187	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	188	errno = ENOMEM;
154	} aio_cb;	189	if (!fiemap)
155
156	enum {
157	FLAG_CANCELLED = 0x01, /* request was cancelled */
158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
160	};
161
162	typedef aio_cb *aio_req;
163	typedef aio_cb *aio_req_ornot;
164
165	enum {
166	PRI_MIN = -4,
167	PRI_MAX = 4,
168
169	DEFAULT_PRI = 0,
170	PRI_BIAS = -PRI_MIN,
171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
172	};
173
174	#define AIO_TICKS ((1000000 + 1023) >> 10)
175
176	static unsigned int max_poll_time = 0;
177	static unsigned int max_poll_reqs = 0;
178
179	/* calculcate time difference in ~1/AIO_TICKS of a second */
180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
181	{
182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
184	}
185
186	static thread_t main_tid;
187	static int main_sig;
188	static int block_sig_level;
189
190	void block_sig ()
191	{
192	sigset_t ss;
193
194	if (block_sig_level++)
195	return;	190	return;
196		191
197	if (!main_sig)	192	req->ptr1 = fiemap;
		193
		194	fiemap->fm_start = req->offs;
		195	fiemap->fm_length = req->size;
		196	fiemap->fm_flags = req->int2;
		197	fiemap->fm_extent_count = count;
		198
		199	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
198	return;	200	return;
199		201
200	sigemptyset (&ss);	202	if (req->int3 >= 0 /* not autosizing */
201	sigaddset (&ss, main_sig);	203	|| !fiemap->fm_mapped_extents /* no more extents */
202	pthread_sigmask (SIG_BLOCK, &ss, 0);	204	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
203	}	205	goto done;
204		206
205	void unblock_sig ()	207	/* else we have to loop -
206	{	208	* it would be tempting (actually I tried that first) to just query the
207	sigset_t ss;	209	* number of extents needed, but linux often feels like not returning all
		210	* extents, without telling us it left any out. this complicates
		211	* this quite a bit.
		212	*/
208		213
209	if (--block_sig_level)	214	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
210	return;
211		215
212	if (!main_sig)	216	for (;;)
213	return;
214
215	sigemptyset (&ss);
216	sigaddset (&ss, main_sig);
217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
218	}
219
220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
221
222	static unsigned int started, idle, wanted;
223
224	/* worker threads management */
225	static mutex_t wrklock = X_MUTEX_INIT;
226
227	typedef struct worker {
228	/* locked by wrklock */
229	struct worker *prev, *next;
230
231	thread_t tid;
232
233	/* locked by reslock, reqlock or wrklock */
234	aio_req req; /* currently processed request */
235	void *dbuf;
236	DIR *dirp;
237	} worker;
238
239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
240
241	static void worker_clear (worker *wrk)
242	{
243	if (wrk->dirp)
244	{	217	{
245	closedir (wrk->dirp);	218	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
246	wrk->dirp = 0;	219	char scratch[3072];
247	}	220	struct fiemap *incmap = (struct fiemap *)scratch;
248		221
249	if (wrk->dbuf)	222	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
250	{	223	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
251	free (wrk->dbuf);	224	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
252	wrk->dbuf = 0;	225	incmap->fm_flags = fiemap->fm_flags;
253	}	226	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
254	}
255		227
256	static void worker_free (worker *wrk)	228	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
257	{
258	wrk->next->prev = wrk->prev;
259	wrk->prev->next = wrk->next;
260
261	free (wrk);
262	}
263
264	static volatile unsigned int nreqs, nready, npending;
265	static volatile unsigned int max_idle = 4;
266	static volatile unsigned int max_outstanding = 0xffffffff;
267	static int respipe [2];
268
269	static mutex_t reslock = X_MUTEX_INIT;
270	static mutex_t reqlock = X_MUTEX_INIT;
271	static cond_t reqwait = X_COND_INIT;
272
273	#if WORDACCESS_UNSAFE
274
275	static unsigned int get_nready ()
276	{
277	unsigned int retval;
278
279	X_LOCK (reqlock);
280	retval = nready;
281	X_UNLOCK (reqlock);
282
283	return retval;
284	}
285
286	static unsigned int get_npending ()
287	{
288	unsigned int retval;
289
290	X_LOCK (reslock);
291	retval = npending;
292	X_UNLOCK (reslock);
293
294	return retval;
295	}
296
297	static unsigned int get_nthreads ()
298	{
299	unsigned int retval;
300
301	X_LOCK (wrklock);
302	retval = started;
303	X_UNLOCK (wrklock);
304
305	return retval;
306	}
307
308	#else
309
310	# define get_nready() nready
311	# define get_npending() npending
312	# define get_nthreads() started
313
314	#endif
315
316	/*
317	* a somewhat faster data structure might be nice, but
318	* with 8 priorities this actually needs <20 insns
319	* per shift, the most expensive operation.
320	*/
321	typedef struct {
322	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
323	int size;
324	} reqq;
325
326	static reqq req_queue;
327	static reqq res_queue;
328
329	int reqq_push (reqq *q, aio_req req)
330	{
331	int pri = req->pri;
332	req->next = 0;
333
334	if (q->qe[pri])
335	{
336	q->qe[pri]->next = req;
337	q->qe[pri] = req;
338	}
339	else
340	q->qe[pri] = q->qs[pri] = req;
341
342	return q->size++;
343	}
344
345	aio_req reqq_shift (reqq *q)
346	{
347	int pri;
348
349	if (!q->size)
350	return 0;	229	return;
351		230
352	--q->size;	231	if (!incmap->fm_mapped_extents)
		232	goto done;
353		233
354	for (pri = NUM_PRI; pri--; )	234	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
355	{	235	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
356	aio_req req = q->qs[pri];	236	errno = ENOMEM;
357
358	if (req)	237	if (!fiemap)
		238	return;
		239
		240	req->ptr1 = fiemap;
		241
		242	for (count = 0; count < incmap->fm_mapped_extents; ++count)
359	{	243	{
360	if (!(q->qs[pri] = req->next))	244	struct fiemap_extent *e = incmap->fm_extents + count;
361	q->qe[pri] = 0;
362		245
363	return req;	246	if (e->fe_logical + e->fe_length >= end_offset)
		247	goto done;
		248
		249	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		250
		251	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		252	goto done;
		253
364	}	254	}
365	}	255	}
366		256
367	abort ();	257	done:
368	}	258	req->result = 0;
369		259
370	static int poll_cb ();	260	#else
371	static int req_invoke (aio_req req);	261	errno = ENOSYS;
		262	#endif
		263	}
		264
		265	/*****************************************************************************/
		266
		267	enum {
		268	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		269	};
		270
		271	typedef eio_req *aio_req;
		272	typedef eio_req *aio_req_ornot;
		273	typedef eio_wd aio_wd;
		274
		275	static SV *on_next_submit;
		276	static int next_pri = EIO_PRI_DEFAULT;
		277	static int max_outstanding;
		278
		279	static s_epipe respipe;
		280
372	static void req_destroy (aio_req req);	281	static void req_destroy (aio_req req);
373	static void req_cancel (aio_req req);	282	static void req_cancel (aio_req req);
374		283
		284	static void
		285	want_poll (void)
		286	{
		287	/* write a dummy byte to the pipe so fh becomes ready */
		288	s_epipe_signal (&respipe);
		289	}
		290
		291	static void
		292	done_poll (void)
		293	{
		294	/* read any signals sent by the worker threads */
		295	s_epipe_drain (&respipe);
		296	}
		297
375	/* must be called at most once */	298	/* must be called at most once */
376	static SV *req_sv (aio_req req, const char *klass)	299	static SV *
		300	req_sv (aio_req req, HV *stash)
377	{	301	{
378	if (!req->self)	302	if (!req->self)
379	{	303	{
380	req->self = (SV *)newHV ();	304	req->self = (SV *)newHV ();
381	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	305	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
382	}	306	}
383		307
384	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	308	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
385	}	309	}
386		310
387	static aio_req SvAIO_REQ (SV *sv)	311	static SV *
		312	newSVaio_wd (aio_wd wd)
		313	{
		314	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		315	}
		316
		317	static aio_req
		318	SvAIO_REQ (SV *sv)
388	{	319	{
389	MAGIC *mg;	320	MAGIC *mg;
390		321
391	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	322	if (!SvROK (sv)
		323	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		324	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		325	&& SvSTASH (SvRV (sv)) != aio_req_stash
		326	&& !sv_derived_from (sv, "IO::AIO::REQ")))
392	croak ("object of class " AIO_REQ_KLASS " expected");	327	croak ("object of class IO::AIO::REQ expected");
393		328
394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	329	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
395		330
396	return mg ? (aio_req)mg->mg_ptr : 0;	331	return mg ? (aio_req)mg->mg_ptr : 0;
397	}	332	}
398		333
		334	static aio_wd
		335	SvAIO_WD (SV *sv)
		336	{
		337	if (!SvROK (sv)
		338	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		339	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		340	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		341
		342	return (aio_wd)(long)SvIVX (SvRV (sv));
		343	}
		344
		345	static SV *
		346	newmortalFH (int fd, int flags)
		347	{
		348	if (fd < 0)
		349	return &PL_sv_undef;
		350
		351	GV *gv = (GV *)sv_newmortal ();
		352	char sym[64];
		353	int symlen;
		354
		355	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		356	gv_init (gv, aio_stash, sym, symlen, 0);
		357
		358	symlen = snprintf (
		359	sym,
		360	sizeof (sym),
		361	"%s&=%d",
		362	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		363	fd
		364	);
		365
		366	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		367	? (SV *)gv : &PL_sv_undef;
		368	}
		369
		370	static void
399	static void aio_grp_feed (aio_req grp)	371	aio_grp_feed (aio_req grp)
400	{	372	{
401	block_sig ();	373	if (grp->sv2 && SvOK (grp->sv2))
402
403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
404	{	374	{
405	int old_len = grp->size;
406
407	if (grp->sv2 && SvOK (grp->sv2))
408	{
409	dSP;	375	dSP;
410		376
411	ENTER;	377	ENTER;
412	SAVETMPS;	378	SAVETMPS;
413	PUSHMARK (SP);	379	PUSHMARK (SP);
414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	380	XPUSHs (req_sv (grp, aio_grp_stash));
415	PUTBACK;	381	PUTBACK;
416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	382	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
417	SPAGAIN;	383	SPAGAIN;
418	FREETMPS;	384	FREETMPS;
419	LEAVE;	385	LEAVE;
420	}
421
422	/* stop if no progress has been made */
423	if (old_len == grp->size)
424	{
425	SvREFCNT_dec (grp->sv2);
426	grp->sv2 = 0;
427	break;
428	}
429	}	386	}
430
431	unblock_sig ();
432	}	387	}
433		388
434	static void aio_grp_dec (aio_req grp)	389	static void
		390	req_submit (eio_req *req)
435	{	391	{
436	--grp->size;	392	eio_submit (req);
437		393
438	/* call feeder, if applicable */	394	if (expect_false (on_next_submit))
439	aio_grp_feed (grp);
440
441	/* finish, if done */
442	if (!grp->size && grp->int1)
443	{	395	{
444	block_sig ();	396	dSP;
		397	SV *cb = sv_2mortal (on_next_submit);
445		398
446	if (!req_invoke (grp))	399	on_next_submit = 0;
447	{
448	req_destroy (grp);
449	unblock_sig ();
450	croak (0);
451	}
452		400
453	req_destroy (grp);	401	PUSHMARK (SP);
454	unblock_sig ();	402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
455	}	404	}
456	}	405	}
457		406
		407	static int
458	static int req_invoke (aio_req req)	408	req_invoke (eio_req *req)
459	{	409	{
460	dSP;
461
462	if (req->flags & FLAG_SV2_RO_OFF)	410	if (req->flags & FLAG_SV2_RO_OFF)
463	SvREADONLY_off (req->sv2);	411	SvREADONLY_off (req->sv2);
464		412
465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	413	if (!EIO_CANCELLED (req) && req->callback)
466	{	414	{
		415	dSP;
		416	static SV *sv_result_cache; /* caches the result integer SV */
		417	SV *sv_result;
		418
467	ENTER;	419	ENTER;
468	SAVETMPS;	420	SAVETMPS;
469	PUSHMARK (SP);	421	PUSHMARK (SP);
470	EXTEND (SP, 1);	422	EXTEND (SP, 1);
471		423
		424	/* do not recreate the result IV from scratch each time */
		425	if (expect_true (sv_result_cache))
		426	{
		427	sv_result = sv_result_cache; sv_result_cache = 0;
		428	SvIV_set (sv_result, req->result);
		429	SvIOK_only (sv_result);
		430	}
		431	else
		432	{
		433	sv_result = newSViv (req->result);
		434	SvREADONLY_on (sv_result);
		435	}
		436
472	switch (req->type)	437	switch (req->type)
473	{	438	{
		439	case EIO_WD_OPEN:
		440	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		441	break;
		442
474	case REQ_READDIR:	443	case EIO_READDIR:
475	{	444	{
476	SV *rv = &PL_sv_undef;	445	SV *rv = &PL_sv_undef;
477		446
478	if (req->result >= 0)	447	if (req->result >= 0)
479	{	448	{
480	int i;	449	int i;
481	char *buf = req->ptr2;	450	char *names = (char *)req->ptr2;
		451	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
482	AV *av = newAV ();	452	AV *av = newAV ();
483		453
484	av_extend (av, req->result - 1);	454	av_extend (av, req->result - 1);
485		455
486	for (i = 0; i < req->result; ++i)	456	for (i = 0; i < req->result; ++i)
487	{	457	{
488	SV *sv = newSVpv (buf, 0);	458	if (req->int1 & EIO_READDIR_DENTS)
		459	{
		460	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
489		461
		462	if (req->int1 & EIO_READDIR_CUSTOM2)
		463	{
		464	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		465	AV *avent = newAV ();
		466
		467	av_extend (avent, 2);
		468
		469	if (!sv_type [ent->type])
		470	{
		471	sv_type [ent->type] = newSViv (ent->type);
		472	SvREADONLY_on (sv_type [ent->type]);
		473	}
		474
		475	av_store (avent, 0, namesv);
		476	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		477	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		478
		479	av_store (av, i, newRV_noinc ((SV *)avent));
		480	}
		481	else
490	av_store (av, i, sv);	482	av_store (av, i, namesv);
		483
		484	++ent;
		485	}
		486	else
		487	{
		488	SV *name = newSVpv (names, 0);
		489	av_store (av, i, name);
491	buf += SvCUR (sv) + 1;	490	names += SvCUR (name) + 1;
		491	}
492	}	492	}
493		493
494	rv = sv_2mortal (newRV_noinc ((SV *)av));	494	rv = sv_2mortal (newRV_noinc ((SV *)av));
495	}	495	}
496		496
497	PUSHs (rv);	497	PUSHs (rv);
		498
		499	if (req->int1 & EIO_READDIR_CUSTOM1)
		500	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
498	}	501	}
499	break;	502	break;
500		503
501	case REQ_OPEN:	504	case EIO_OPEN:
		505	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		506	break;
		507
		508	case EIO_STATVFS:
		509	case EIO_FSTATVFS:
502	{	510	{
503	/* convert fd to fh */	511	SV *rv = &PL_sv_undef;
504	SV *fh;	512
		513	#ifndef _WIN32
		514	if (req->result >= 0)
		515	{
		516	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		517	HV *hv = newHV ();
		518	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		519	* chooses to make it a struct.
		520	*/
		521	unsigned long fsid = 0;
		522	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
505		523
506	PUSHs (sv_2mortal (newSViv (req->result)));	524	rv = sv_2mortal (newRV_noinc ((SV *)hv));
507	PUTBACK;
508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
509	SPAGAIN;
510		525
511	fh = POPs;	526	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
512	PUSHMARK (SP);	527	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		528	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		529	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		530	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		531	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		532	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		533	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		534	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		535	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		536	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		537	}
		538	#endif
		539
513	XPUSHs (fh);	540	PUSHs (rv);
514	}	541	}
		542
515	break;	543	break;
516		544
517	case REQ_GROUP:	545	case EIO_GROUP:
518	req->int1 = 2; /* mark group as finished */	546	req->int1 = 2; /* mark group as finished */
519		547
520	if (req->sv1)	548	if (req->sv1)
521	{	549	{
522	int i;	550	int i;
…		…
526	for (i = 0; i <= AvFILL (av); ++i)	554	for (i = 0; i <= AvFILL (av); ++i)
527	PUSHs (*av_fetch (av, i, 0));	555	PUSHs (*av_fetch (av, i, 0));
528	}	556	}
529	break;	557	break;
530		558
531	case REQ_NOP:	559	case EIO_NOP:
532	case REQ_BUSY:	560	case EIO_BUSY:
533	break;	561	break;
534		562
535	case REQ_READLINK:	563	case EIO_READLINK:
		564	case EIO_REALPATH:
536	if (req->result > 0)	565	if (req->result > 0)
		566	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		567	break;
		568
		569	case EIO_STAT:
		570	case EIO_LSTAT:
		571	case EIO_FSTAT:
		572	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		573
		574	if (!(PL_laststatval = req->result))
		575	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		576	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		577
		578	PUSHs (sv_result);
		579	break;
		580
		581	case EIO_SEEK:
		582	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		583	break;
		584
		585	case EIO_READ:
		586	{
		587	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		588	*SvEND (req->sv2) = 0;
		589	SvPOK_only (req->sv2);
		590	SvSETMAGIC (req->sv2);
		591	PUSHs (sv_result);
		592	}
		593	break;
		594
		595	case EIO_CUSTOM:
		596	if (req->feed == fiemap)
537	{	597	{
538	SvCUR_set (req->sv2, req->result);	598	#if HAVE_FIEMAP
539	*SvEND (req->sv2) = 0;
540	PUSHs (req->sv2);	599	if (!req->result)
		600	{
		601	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		602
		603	if (fiemap->fm_extent_count)
		604	{
		605	AV *av = newAV ();
		606	int i;
		607
		608	while (fiemap->fm_mapped_extents)
		609	{
		610	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		611	AV *ext_av = newAV ();
		612
		613	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		614	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		615	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		616	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		617
		618	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		619	}
		620
		621	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		622	}
		623	else
		624	{
		625	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		626	PUSHs (sv_result);
		627	}
		628	}
		629	#endif
541	}	630	}
		631	else
		632	PUSHs (sv_result);
542	break;	633	break;
543		634
544	case REQ_STAT:	635	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
545	case REQ_LSTAT:	636	if (req->result > 0)
546	case REQ_FSTAT:	637	SvIV_set (sv_result, 0);
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	638	/* FALLTHROUGH */
548	PL_laststatval = req->result;
549	PL_statcache = *(Stat_t *)(req->ptr2);
550	PUSHs (sv_2mortal (newSViv (req->result)));
551	break;
552
553	case REQ_READ:
554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
555	*SvEND (req->sv2) = 0;
556	PUSHs (sv_2mortal (newSViv (req->result)));
557	break;
558		639
559	default:	640	default:
560	PUSHs (sv_2mortal (newSViv (req->result)));	641	PUSHs (sv_result);
561	break;	642	break;
562	}	643	}
563		644
564	errno = req->errorno;	645	errno = req->errorno;
565		646
566	PUTBACK;	647	PUTBACK;
567	call_sv (req->callback, G_VOID | G_EVAL);	648	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
568	SPAGAIN;	649	SPAGAIN;
		650
		651	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		652	SvREFCNT_dec (sv_result);
		653	else
		654	sv_result_cache = sv_result;
569		655
570	FREETMPS;	656	FREETMPS;
571	LEAVE;	657	LEAVE;
		658
		659	PUTBACK;
572	}	660	}
573		661
574	if (req->grp)
575	{
576	aio_req grp = req->grp;
577
578	/* unlink request */
579	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
580	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
581
582	if (grp->grp_first == req)
583	grp->grp_first = req->grp_next;
584
585	aio_grp_dec (grp);
586	}
587
588	return !SvTRUE (ERRSV);	662	return !!SvTRUE (ERRSV);
589	}	663	}
590		664
		665	static void
591	static void req_destroy (aio_req req)	666	req_destroy (aio_req req)
592	{	667	{
593	if (req->self)	668	if (req->self)
594	{	669	{
595	sv_unmagic (req->self, PERL_MAGIC_ext);	670	sv_unmagic (req->self, PERL_MAGIC_ext);
596	SvREFCNT_dec (req->self);	671	SvREFCNT_dec (req->self);
597	}	672	}
598		673
599	SvREFCNT_dec (req->sv1);	674	SvREFCNT_dec (req->sv1);
600	SvREFCNT_dec (req->sv2);	675	SvREFCNT_dec (req->sv2);
		676	SvREFCNT_dec (req->sv3);
		677	SvREFCNT_dec (req->sv4);
601	SvREFCNT_dec (req->callback);	678	SvREFCNT_dec (req->callback);
602		679
603	if (req->flags & FLAG_PTR2_FREE)
604	free (req->ptr2);
605
606	Safefree (req);	680	free (req);
607	}	681	}
608		682
		683	static void
609	static void req_cancel_subs (aio_req grp)	684	req_cancel_subs (aio_req grp)
610	{	685	{
611	aio_req sub;
612
613	if (grp->type != REQ_GROUP)	686	if (grp->type != EIO_GROUP)
614	return;	687	return;
615		688
616	SvREFCNT_dec (grp->sv2);	689	SvREFCNT_dec (grp->sv2);
617	grp->sv2 = 0;	690	grp->sv2 = 0;
618		691
619	for (sub = grp->grp_first; sub; sub = sub->grp_next)	692	eio_grp_cancel (grp);
620	req_cancel (sub);
621	}	693	}
622		694
623	static void req_cancel (aio_req req)	695	static void ecb_cold
		696	create_respipe (void)
624	{	697	{
625	req->flags |= FLAG_CANCELLED;	698	if (s_epipe_renew (&respipe))
626		699	croak ("IO::AIO: unable to initialize result pipe");
627	req_cancel_subs (req);
628	}	700	}
629		701
630	X_THREAD_PROC (aio_proc);	702	static void
631		703	poll_wait (void)
632	static void start_thread (void)
633	{	704	{
634	worker *wrk = calloc (1, sizeof (worker));
635
636	if (!wrk)
637	croak ("unable to allocate worker thread data");
638
639	X_LOCK (wrklock);
640
641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
642	{
643	wrk->prev = &wrk_first;
644	wrk->next = wrk_first.next;
645	wrk_first.next->prev = wrk;
646	wrk_first.next = wrk;
647	++started;
648	}
649	else
650	free (wrk);
651
652	X_UNLOCK (wrklock);
653	}
654
655	static void maybe_start_thread ()
656	{
657	if (get_nthreads () >= wanted)
658	return;
659
660	/* todo: maybe use idle here, but might be less exact */
661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
662	return;
663
664	start_thread ();
665	}
666
667	static void req_send (aio_req req)
668	{
669	block_sig ();
670
671	++nreqs;
672
673	X_LOCK (reqlock);
674	++nready;
675	reqq_push (&req_queue, req);
676	X_COND_SIGNAL (reqwait);
677	X_UNLOCK (reqlock);
678
679	unblock_sig ();
680
681	maybe_start_thread ();
682	}
683
684	static void end_thread (void)
685	{
686	aio_req req;
687
688	Newz (0, req, 1, aio_cb);
689
690	req->type = REQ_QUIT;
691	req->pri = PRI_MAX + PRI_BIAS;
692
693	X_LOCK (reqlock);
694	reqq_push (&req_queue, req);
695	X_COND_SIGNAL (reqwait);
696	X_UNLOCK (reqlock);
697
698	X_LOCK (wrklock);
699	--started;
700	X_UNLOCK (wrklock);
701	}
702
703	static void set_max_idle (int nthreads)
704	{
705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
706	max_idle = nthreads <= 0 ? 1 : nthreads;
707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
708	}
709
710	static void min_parallel (int nthreads)
711	{
712	if (wanted < nthreads)
713	wanted = nthreads;
714	}
715
716	static void max_parallel (int nthreads)
717	{
718	if (wanted > nthreads)
719	wanted = nthreads;
720
721	while (started > wanted)
722	end_thread ();
723	}
724
725	static void poll_wait ()
726	{
727	fd_set rfd;
728
729	while (nreqs)	705	while (eio_nreqs ())
730	{	706	{
731	int size;	707	int size;
732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	708
		709	X_LOCK (EIO_POOL->reslock);
733	size = res_queue.size;	710	size = EIO_POOL->res_queue.size;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	711	X_UNLOCK (EIO_POOL->reslock);
735		712
736	if (size)	713	if (size)
737	return;	714	return;
738		715
739	maybe_start_thread ();	716	etp_maybe_start_thread (EIO_POOL);
740		717
741	FD_ZERO(&rfd);	718	s_epipe_wait (&respipe);
742	FD_SET(respipe [0], &rfd);
743
744	select (respipe [0] + 1, &rfd, 0, 0, 0);
745	}	719	}
746	}	720	}
747		721
748	static int poll_cb ()	722	static int
		723	poll_cb (void)
749	{	724	{
750	dSP;
751	int count = 0;
752	int maxreqs = max_poll_reqs;
753	int do_croak = 0;
754	struct timeval tv_start, tv_now;
755	aio_req req;
756
757	if (max_poll_time)
758	gettimeofday (&tv_start, 0);
759
760	block_sig ();
761
762	for (;;)	725	for (;;)
763	{	726	{
764	for (;;)	727	int res = eio_poll ();
		728
		729	if (res > 0)
		730	croak (0);
		731
		732	if (!max_outstanding || max_outstanding > eio_nreqs ())
		733	return res;
		734
		735	poll_wait ();
		736	}
		737	}
		738
		739	static void ecb_cold
		740	reinit (void)
		741	{
		742	create_respipe ();
		743
		744	if (eio_init (want_poll, done_poll) < 0)
		745	croak ("IO::AIO: unable to initialise eio library");
		746	}
		747
		748	/*****************************************************************************/
		749
		750	#if !_POSIX_MAPPED_FILES
		751	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		752	# define munmap(addr,length) EIO_ENOSYS ()
		753	#endif
		754
		755	#if !_POSIX_MEMORY_PROTECTION
		756	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		757	#endif
		758
		759	#define MMAP_MAGIC PERL_MAGIC_ext
		760
		761	static int ecb_cold
		762	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		763	{
		764	int old_errno = errno;
		765	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		766	errno = old_errno;
		767
		768	mg->mg_obj = 0; /* just in case */
		769
		770	SvREADONLY_off (sv);
		771
		772	if (SvPVX (sv) != mg->mg_ptr)
		773	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		774
		775	SvCUR_set (sv, 0);
		776	SvPVX (sv) = 0;
		777	SvOK_off (sv);
		778
		779	return 0;
		780	}
		781
		782	static MGVTBL mmap_vtbl = {
		783	0, 0, 0, 0, mmap_free
		784	};
		785
		786	/*****************************************************************************/
		787
		788	static SV *
		789	get_cb (SV *cb_sv)
		790	{
		791	SvGETMAGIC (cb_sv);
		792	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		793	}
		794
		795	static aio_req ecb_noinline
		796	dreq (SV *callback)
		797	{
		798	SV *cb_cv;
		799	aio_req req;
		800	int req_pri = next_pri;
		801	next_pri = EIO_PRI_DEFAULT;
		802
		803	cb_cv = get_cb (callback);
		804
		805	req = calloc (sizeof (*req), 1);
		806	if (!req)
		807	croak ("out of memory during eio_req allocation");
		808
		809	req->callback = SvREFCNT_inc (cb_cv);
		810	req->pri = req_pri;
		811
		812	return req;
		813	}
		814
		815	#define dREQ \
		816	aio_req req = dreq (callback); \
		817
		818	#define REQ_SEND \
		819	PUTBACK; \
		820	req_submit (req); \
		821	SPAGAIN; \
		822	\
		823	if (GIMME_V != G_VOID) \
		824	XPUSHs (req_sv (req, aio_req_stash));
		825
		826	ecb_inline void
		827	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		828	{
		829	if (expect_false (SvROK (path)))
		830	{
		831	SV *rv = SvRV (path);
		832	SV *wdob;
		833
		834	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
765	{	835	{
766	maybe_start_thread ();	836	path = AvARRAY (rv)[1];
		837	wdob = AvARRAY (rv)[0];
767		838
768	X_LOCK (reslock);	839	if (SvOK (wdob))
769	req = reqq_shift (&res_queue);
770
771	if (req)
772	{	840	{
773	--npending;	841	*wd = SvAIO_WD (wdob);
774		842	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
775	if (!res_queue.size)
776	{
777	/* read any signals sent by the worker threads */
778	char buf [4];
779	while (read (respipe [0], buf, 4) == 4)
780	;
781	}
782	}
783
784	X_UNLOCK (reslock);
785
786	if (!req)
787	break;
788
789	--nreqs;
790
791	if (req->type == REQ_GROUP && req->size)
792	{
793	req->int1 = 1; /* mark request as delayed */
794	continue;
795	}	843	}
796	else	844	else
797	{	845	*wd = EIO_INVALID_WD;
798	if (!req_invoke (req))
799	{
800	req_destroy (req);
801	unblock_sig ();
802	croak (0);
803	}
804
805	count++;
806	}
807
808	req_destroy (req);
809
810	if (maxreqs && !--maxreqs)
811	break;
812
813	if (max_poll_time)
814	{
815	gettimeofday (&tv_now, 0);
816
817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
818	break;
819	}
820	}	846	}
		847	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		848	{
		849	*wd = (aio_wd)(long)SvIVX (rv);
		850	*wdsv = SvREFCNT_inc_NN (rv);
		851	*ptr = ".";
		852	return; /* path set to "." */
		853	}
		854	else
		855	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		856	}
821		857
822	if (nreqs <= max_outstanding)	858	*pathsv = newSVsv (path);
		859	*ptr = SvPVbyte_nolen (*pathsv);
		860	}
		861
		862	static void ecb_noinline
		863	req_set_path1 (aio_req req, SV *path)
		864	{
		865	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		866	}
		867
		868	static void ecb_noinline
		869	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		870	{
		871	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		872
		873	switch (SvTYPE (rv))
		874	{
		875	case SVt_PVIO:
		876	case SVt_PVLV:
		877	case SVt_PVGV:
		878	req->type = type_fh;
		879	req->sv1 = newSVsv (fh_or_path);
		880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
823	break;	881	break;
824		882
825	poll_wait ();	883	default:
826		884	req->type = type_path;
827	++maxreqs;	885	req_set_path1 (req, fh_or_path);
		886	break;
828	}	887	}
829
830	unblock_sig ();
831	return count;
832	}	888	}
833		889
834	/*****************************************************************************/	890	XS(boot_IO__AIO) ecb_cold;
835	/* work around various missing functions */
836		891
837	#if !HAVE_PREADWRITE
838	# define pread aio_pread
839	# define pwrite aio_pwrite
840
841	/*
842	* make our pread/pwrite safe against themselves, but not against
843	* normal read/write by using a mutex. slows down execution a lot,
844	* but that's your problem, not mine.
845	*/
846	static mutex_t preadwritelock = X_MUTEX_INIT;
847
848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
849	{
850	ssize_t res;
851	off_t ooffset;
852
853	X_LOCK (preadwritelock);
854	ooffset = lseek (fd, 0, SEEK_CUR);
855	lseek (fd, offset, SEEK_SET);
856	res = read (fd, buf, count);
857	lseek (fd, ooffset, SEEK_SET);
858	X_UNLOCK (preadwritelock);
859
860	return res;
861	}
862
863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
864	{
865	ssize_t res;
866	off_t ooffset;
867
868	X_LOCK (preadwritelock);
869	ooffset = lseek (fd, 0, SEEK_CUR);
870	lseek (fd, offset, SEEK_SET);
871	res = write (fd, buf, count);
872	lseek (fd, offset, SEEK_SET);
873	X_UNLOCK (preadwritelock);
874
875	return res;
876	}
877	#endif
878
879	#ifndef HAVE_FUTIMES
880
881	# define utimes(path,times) aio_utimes (path, times)
882	# define futimes(fd,times) aio_futimes (fd, times)
883
884	int aio_utimes (const char *filename, const struct timeval times[2])
885	{
886	if (times)
887	{
888	struct utimbuf buf;
889
890	buf.actime = times[0].tv_sec;
891	buf.modtime = times[1].tv_sec;
892
893	return utime (filename, &buf);
894	}
895	else
896	return utime (filename, 0);
897	}
898
899	int aio_futimes (int fd, const struct timeval tv[2])
900	{
901	errno = ENOSYS;
902	return -1;
903	}
904
905	#endif
906
907	#if !HAVE_FDATASYNC
908	# define fdatasync fsync
909	#endif
910
911	#if !HAVE_READAHEAD
912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
913
914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
915	{
916	size_t todo = count;
917	dBUF;
918
919	while (todo > 0)
920	{
921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
922
923	pread (fd, aio_buf, len, offset);
924	offset += len;
925	todo -= len;
926	}
927
928	errno = 0;
929	return count;
930	}
931
932	#endif
933
934	#if !HAVE_READDIR_R
935	# define readdir_r aio_readdir_r
936
937	static mutex_t readdirlock = X_MUTEX_INIT;
938
939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
940	{
941	X_DIRENT *e;
942	int errorno;
943
944	X_LOCK (readdirlock);
945
946	e = readdir (dirp);
947	errorno = errno;
948
949	if (e)
950	{
951	*res = ent;
952	strcpy (ent->d_name, e->d_name);
953	}
954	else
955	*res = 0;
956
957	X_UNLOCK (readdirlock);
958
959	errno = errorno;
960	return e ? 0 : -1;
961	}
962	#endif
963
964	/* sendfile always needs emulation */
965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
966	{
967	ssize_t res;
968
969	if (!count)
970	return 0;
971
972	#if HAVE_SENDFILE
973	# if __linux
974	res = sendfile (ofd, ifd, &offset, count);
975
976	# elif __freebsd
977	/*
978	* Of course, the freebsd sendfile is a dire hack with no thoughts
979	* wasted on making it similar to other I/O functions.
980	*/
981	{
982	off_t sbytes;
983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
984
985	if (res < 0 && sbytes)
986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
987	res = sbytes;
988	}
989
990	# elif __hpux
991	res = sendfile (ofd, ifd, offset, count, 0, 0);
992
993	# elif __solaris
994	{
995	struct sendfilevec vec;
996	size_t sbytes;
997
998	vec.sfv_fd = ifd;
999	vec.sfv_flag = 0;
1000	vec.sfv_off = offset;
1001	vec.sfv_len = count;
1002
1003	res = sendfilev (ofd, &vec, 1, &sbytes);
1004
1005	if (res < 0 && sbytes)
1006	res = sbytes;
1007	}
1008
1009	# endif
1010	#else
1011	res = -1;
1012	errno = ENOSYS;
1013	#endif
1014
1015	if (res < 0
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1017	#if __solaris
1018	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1019	#endif
1020	)
1021	)
1022	{
1023	/* emulate sendfile. this is a major pain in the ass */
1024	dBUF;
1025
1026	res = 0;
1027
1028	while (count)
1029	{
1030	ssize_t cnt;
1031
1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1033
1034	if (cnt <= 0)
1035	{
1036	if (cnt && !res) res = -1;
1037	break;
1038	}
1039
1040	cnt = write (ofd, aio_buf, cnt);
1041
1042	if (cnt <= 0)
1043	{
1044	if (cnt && !res) res = -1;
1045	break;
1046	}
1047
1048	offset += cnt;
1049	res += cnt;
1050	count -= cnt;
1051	}
1052	}
1053
1054	return res;
1055	}
1056
1057	/* read a full directory */
1058	static void scandir_ (aio_req req, worker *self)
1059	{
1060	DIR *dirp;
1061	union
1062	{
1063	X_DIRENT d;
1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1065	} *u;
1066	X_DIRENT *entp;
1067	char *name, *names;
1068	int memlen = 4096;
1069	int memofs = 0;
1070	int res = 0;
1071
1072	X_LOCK (wrklock);
1073	self->dirp = dirp = opendir (req->ptr1);
1074	self->dbuf = u = malloc (sizeof (*u));
1075	req->flags |= FLAG_PTR2_FREE;
1076	req->ptr2 = names = malloc (memlen);
1077	X_UNLOCK (wrklock);
1078
1079	if (dirp && u && names)
1080	for (;;)
1081	{
1082	errno = 0;
1083	readdir_r (dirp, &u->d, &entp);
1084
1085	if (!entp)
1086	break;
1087
1088	name = entp->d_name;
1089
1090	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1091	{
1092	int len = strlen (name) + 1;
1093
1094	res++;
1095
1096	while (memofs + len > memlen)
1097	{
1098	memlen *= 2;
1099	X_LOCK (wrklock);
1100	req->ptr2 = names = realloc (names, memlen);
1101	X_UNLOCK (wrklock);
1102
1103	if (!names)
1104	break;
1105	}
1106
1107	memcpy (names + memofs, name, len);
1108	memofs += len;
1109	}
1110	}
1111
1112	if (errno)
1113	res = -1;
1114
1115	req->result = res;
1116	}
1117
1118	/*****************************************************************************/
1119
1120	X_THREAD_PROC (aio_proc)
1121	{
1122	{//D
1123	aio_req req;
1124	struct timespec ts;
1125	worker *self = (worker *)thr_arg;
1126
1127	/* try to distribute timeouts somewhat randomly */
1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1129
1130	for (;;)
1131	{
1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1133
1134	X_LOCK (reqlock);
1135
1136	for (;;)
1137	{
1138	self->req = req = reqq_shift (&req_queue);
1139
1140	if (req)
1141	break;
1142
1143	++idle;
1144
1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1146	== ETIMEDOUT)
1147	{
1148	if (idle > max_idle)
1149	{
1150	--idle;
1151	X_UNLOCK (reqlock);
1152	X_LOCK (wrklock);
1153	--started;
1154	X_UNLOCK (wrklock);
1155	goto quit;
1156	}
1157
1158	/* we are allowed to idle, so do so without any timeout */
1159	X_COND_WAIT (reqwait, reqlock);
1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1161	}
1162
1163	--idle;
1164	}
1165
1166	--nready;
1167
1168	X_UNLOCK (reqlock);
1169
1170	errno = 0; /* strictly unnecessary */
1171
1172	if (!(req->flags & FLAG_CANCELLED))
1173	switch (req->type)
1174	{
1175	case REQ_READ: req->result = req->offs >= 0
1176	? pread (req->int1, req->ptr1, req->size, req->offs)
1177	: read (req->int1, req->ptr1, req->size); break;
1178	case REQ_WRITE: req->result = req->offs >= 0
1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1180	: write (req->int1, req->ptr1, req->size); break;
1181
1182	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1184
1185	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1186	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1188
1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1195
1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1197	case REQ_CLOSE: req->result = close (req->int1); break;
1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1206
1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
1209	case REQ_READDIR: scandir_ (req, self); break;
1210
1211	case REQ_BUSY:
1212	#ifdef _WIN32
1213	Sleep (req->nv1 * 1000.);
1214	#else
1215	{
1216	struct timeval tv;
1217
1218	tv.tv_sec = req->nv1;
1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1220
1221	req->result = select (0, 0, 0, 0, &tv);
1222	}
1223	#endif
1224	break;
1225
1226	case REQ_UTIME:
1227	case REQ_FUTIME:
1228	{
1229	struct timeval tv[2];
1230	struct timeval *times;
1231
1232	if (req->nv1 != -1. || req->nv2 != -1.)
1233	{
1234	tv[0].tv_sec = req->nv1;
1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1236	tv[1].tv_sec = req->nv2;
1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1238
1239	times = tv;
1240	}
1241	else
1242	times = 0;
1243
1244
1245	req->result = req->type == REQ_FUTIME
1246	? futimes (req->int1, times)
1247	: utimes (req->ptr1, times);
1248	}
1249
1250	case REQ_GROUP:
1251	case REQ_NOP:
1252	break;
1253
1254	case REQ_QUIT:
1255	goto quit;
1256
1257	default:
1258	req->result = -1;
1259	break;
1260	}
1261
1262	req->errorno = errno;
1263
1264	X_LOCK (reslock);
1265
1266	++npending;
1267
1268	if (!reqq_push (&res_queue, req))
1269	{
1270	/* write a dummy byte to the pipe so fh becomes ready */
1271	write (respipe [1], &respipe, 1);
1272
1273	/* optionally signal the main thread asynchronously */
1274	if (main_sig)
1275	pthread_kill (main_tid, main_sig);
1276	}
1277
1278	self->req = 0;
1279	worker_clear (self);
1280
1281	X_UNLOCK (reslock);
1282	}
1283
1284	quit:
1285	X_LOCK (wrklock);
1286	worker_free (self);
1287	X_UNLOCK (wrklock);
1288
1289	return 0;
1290	}//D
1291	}
1292
1293	/*****************************************************************************/
1294
1295	static void atfork_prepare (void)
1296	{
1297	X_LOCK (wrklock);
1298	X_LOCK (reqlock);
1299	X_LOCK (reslock);
1300	#if !HAVE_PREADWRITE
1301	X_LOCK (preadwritelock);
1302	#endif
1303	#if !HAVE_READDIR_R
1304	X_LOCK (readdirlock);
1305	#endif
1306	}
1307
1308	static void atfork_parent (void)
1309	{
1310	#if !HAVE_READDIR_R
1311	X_UNLOCK (readdirlock);
1312	#endif
1313	#if !HAVE_PREADWRITE
1314	X_UNLOCK (preadwritelock);
1315	#endif
1316	X_UNLOCK (reslock);
1317	X_UNLOCK (reqlock);
1318	X_UNLOCK (wrklock);
1319	}
1320
1321	static void atfork_child (void)
1322	{
1323	aio_req prv;
1324
1325	while (prv = reqq_shift (&req_queue))
1326	req_destroy (prv);
1327
1328	while (prv = reqq_shift (&res_queue))
1329	req_destroy (prv);
1330
1331	while (wrk_first.next != &wrk_first)
1332	{
1333	worker *wrk = wrk_first.next;
1334
1335	if (wrk->req)
1336	req_destroy (wrk->req);
1337
1338	worker_clear (wrk);
1339	worker_free (wrk);
1340	}
1341
1342	started = 0;
1343	idle = 0;
1344	nreqs = 0;
1345	nready = 0;
1346	npending = 0;
1347
1348	close (respipe [0]);
1349	close (respipe [1]);
1350
1351	if (!create_pipe (respipe))
1352	croak ("cannot set result pipe to nonblocking mode");
1353
1354	atfork_parent ();
1355	}
1356
1357	#define dREQ \
1358	aio_req req; \
1359	int req_pri = next_pri; \
1360	next_pri = DEFAULT_PRI + PRI_BIAS; \
1361	\
1362	if (SvOK (callback) && !SvROK (callback)) \
1363	croak ("callback must be undef or of reference type"); \
1364	\
1365	Newz (0, req, 1, aio_cb); \
1366	if (!req) \
1367	croak ("out of memory during aio_req allocation"); \
1368	\
1369	req->callback = newSVsv (callback); \
1370	req->pri = req_pri
1371
1372	#define REQ_SEND \
1373	req_send (req); \
1374	\
1375	if (GIMME_V != G_VOID) \
1376	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1377
1378	MODULE = IO::AIO PACKAGE = IO::AIO	892	MODULE = IO::AIO PACKAGE = IO::AIO
1379		893
1380	PROTOTYPES: ENABLE	894	PROTOTYPES: ENABLE
1381		895
1382	BOOT:	896	BOOT:
1383	{	897	{
		898	static const struct {
		899	const char *name;
		900	IV iv;
		901	} *civ, const_iv[] = {
		902	# define const_niv(name, value) { # name, (IV) value },
		903	# define const_iv(name) { # name, (IV) name },
		904	# define const_eio(name) { # name, (IV) EIO_ ## name },
		905
		906	/* you have to re-run ./gendef0 after adding/removing any constants here */
		907	/* the first block can be undef if missing */
		908	const_iv (ENOSYS)
		909	const_iv (EXDEV)
		910	const_iv (EBADR)
		911
		912	/* for lseek */
		913	const_iv (SEEK_DATA)
		914	const_iv (SEEK_HOLE)
		915
		916	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		917	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		918	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		919	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		920	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		921	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		922
		923	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		924	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		925	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		926	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		927	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		928
		929	/* the second block will be 0 when missing */
		930	const_iv (O_RDONLY)
		931	const_iv (O_WRONLY)
		932	const_iv (O_RDWR)
		933	const_iv (O_CREAT)
		934	const_iv (O_TRUNC)
		935	const_iv (O_EXCL)
		936	const_iv (O_APPEND)
		937
		938	const_iv (O_ASYNC)
		939	const_iv (O_DIRECT)
		940	const_iv (O_NOATIME)
		941
		942	const_iv (O_CLOEXEC)
		943	const_iv (O_NOCTTY)
		944	const_iv (O_NOFOLLOW)
		945	const_iv (O_NONBLOCK)
		946	const_iv (O_EXEC)
		947	const_iv (O_SEARCH)
		948	const_iv (O_DIRECTORY)
		949	const_iv (O_DSYNC)
		950	const_iv (O_RSYNC)
		951	const_iv (O_SYNC)
		952	const_iv (O_PATH)
		953	const_iv (O_TMPFILE)
		954	const_iv (O_TTY_INIT)
		955
		956	const_iv (S_IFIFO)
		957	const_iv (S_IFCHR)
		958	const_iv (S_IFBLK)
		959	const_iv (S_IFLNK)
		960	const_iv (S_IFREG)
		961	const_iv (S_IFDIR)
		962	const_iv (S_IFWHT)
		963	const_iv (S_IFSOCK)
		964	const_iv (S_IFMT)
		965
		966	const_iv (ST_RDONLY)
		967	const_iv (ST_NOSUID)
		968	const_iv (ST_NODEV)
		969	const_iv (ST_NOEXEC)
		970	const_iv (ST_SYNCHRONOUS)
		971	const_iv (ST_MANDLOCK)
		972	const_iv (ST_WRITE)
		973	const_iv (ST_APPEND)
		974	const_iv (ST_IMMUTABLE)
		975	const_iv (ST_NOATIME)
		976	const_iv (ST_NODIRATIME)
		977	const_iv (ST_RELATIME)
		978
		979	const_iv (PROT_NONE)
		980	const_iv (PROT_EXEC)
		981	const_iv (PROT_READ)
		982	const_iv (PROT_WRITE)
		983
		984	const_iv (MAP_PRIVATE)
		985	const_iv (MAP_SHARED)
		986	const_iv (MAP_FIXED)
		987	const_iv (MAP_ANONYMOUS)
		988
		989	/* linuxish */
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
		994	const_iv (MAP_GROWSDOWN)
		995	const_iv (MAP_32BIT)
		996	const_iv (MAP_HUGETLB)
		997	const_iv (MAP_STACK)
		998
		999	const_iv (FIEMAP_FLAG_SYNC)
		1000	const_iv (FIEMAP_FLAG_XATTR)
		1001	const_iv (FIEMAP_FLAGS_COMPAT)
		1002	const_iv (FIEMAP_EXTENT_LAST)
		1003	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1004	const_iv (FIEMAP_EXTENT_DELALLOC)
		1005	const_iv (FIEMAP_EXTENT_ENCODED)
		1006	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1007	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1008	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1009	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1010	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1011	const_iv (FIEMAP_EXTENT_MERGED)
		1012	const_iv (FIEMAP_EXTENT_SHARED)
		1013
		1014	const_iv (SPLICE_F_MOVE)
		1015	const_iv (SPLICE_F_NONBLOCK)
		1016	const_iv (SPLICE_F_MORE)
		1017	const_iv (SPLICE_F_GIFT)
		1018
		1019	/* these are libeio constants, and are independent of gendef0 */
		1020	const_eio (SEEK_SET)
		1021	const_eio (SEEK_CUR)
		1022	const_eio (SEEK_END)
		1023
		1024	const_eio (MCL_FUTURE)
		1025	const_eio (MCL_CURRENT)
		1026
		1027	const_eio (MS_ASYNC)
		1028	const_eio (MS_INVALIDATE)
		1029	const_eio (MS_SYNC)
		1030
		1031	const_eio (MT_MODIFY)
		1032
		1033	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1034	const_eio (SYNC_FILE_RANGE_WRITE)
		1035	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1036
		1037	const_eio (FALLOC_FL_KEEP_SIZE)
		1038	const_eio (FALLOC_FL_PUNCH_HOLE)
		1039	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1040	const_eio (FALLOC_FL_ZERO_RANGE)
		1041
		1042	const_eio (READDIR_DENTS)
		1043	const_eio (READDIR_DIRS_FIRST)
		1044	const_eio (READDIR_STAT_ORDER)
		1045	const_eio (READDIR_FOUND_UNKNOWN)
		1046
		1047	const_eio (DT_UNKNOWN)
		1048	const_eio (DT_FIFO)
		1049	const_eio (DT_CHR)
		1050	const_eio (DT_DIR)
		1051	const_eio (DT_BLK)
		1052	const_eio (DT_REG)
		1053	const_eio (DT_LNK)
		1054	const_eio (DT_SOCK)
		1055	const_eio (DT_WHT)
		1056	};
		1057
1384	HV *stash = gv_stashpv ("IO::AIO", 1);	1058	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1059	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1060	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1061	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1385		1062
1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1063	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1064	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1391	#ifdef _WIN32
1392	X_MUTEX_CHECK (wrklock);
1393	X_MUTEX_CHECK (reslock);
1394	X_MUTEX_CHECK (reqlock);
1395	X_MUTEX_CHECK (reqwait);
1396	X_MUTEX_CHECK (preadwritelock);
1397	X_MUTEX_CHECK (readdirlock);
1398	#else
1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1401	#endif
1402		1065
1403	if (!create_pipe (respipe))	1066	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1404	croak ("cannot set result pipe to nonblocking mode");
1405		1067
1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	1068	reinit ();
1407	}	1069	}
1408		1070
1409	void	1071	void
		1072	reinit ()
		1073	PROTOTYPE:
		1074
		1075	void
1410	max_poll_reqs (int nreqs)	1076	max_poll_reqs (unsigned int nreqs)
1411	PROTOTYPE: $	1077	PROTOTYPE: $
1412	CODE:	1078	CODE:
1413	max_poll_reqs = nreqs;	1079	eio_set_max_poll_reqs (nreqs);
1414		1080
1415	void	1081	void
1416	max_poll_time (double nseconds)	1082	max_poll_time (double nseconds)
1417	PROTOTYPE: $	1083	PROTOTYPE: $
1418	CODE:	1084	CODE:
1419	max_poll_time = nseconds * AIO_TICKS;	1085	eio_set_max_poll_time (nseconds);
1420		1086
1421	void	1087	void
1422	min_parallel (int nthreads)	1088	min_parallel (unsigned int nthreads)
1423	PROTOTYPE: $
1424
1425	void
1426	max_parallel (int nthreads)
1427	PROTOTYPE: $
1428
1429	void
1430	max_idle (int nthreads)
1431	PROTOTYPE: $	1089	PROTOTYPE: $
1432	CODE:	1090	CODE:
1433	set_max_idle (nthreads);	1091	eio_set_min_parallel (nthreads);
1434		1092
1435	int	1093	void
1436	max_outstanding (int maxreqs)	1094	max_parallel (unsigned int nthreads)
1437	PROTOTYPE: $	1095	PROTOTYPE: $
1438	CODE:	1096	CODE:
1439	RETVAL = max_outstanding;	1097	eio_set_max_parallel (nthreads);
		1098
		1099	void
		1100	max_idle (unsigned int nthreads)
		1101	PROTOTYPE: $
		1102	CODE:
		1103	eio_set_max_idle (nthreads);
		1104
		1105	void
		1106	idle_timeout (unsigned int seconds)
		1107	PROTOTYPE: $
		1108	CODE:
		1109	eio_set_idle_timeout (seconds);
		1110
		1111	void
		1112	max_outstanding (unsigned int maxreqs)
		1113	PROTOTYPE: $
		1114	CODE:
1440	max_outstanding = maxreqs;	1115	max_outstanding = maxreqs;
1441	OUTPUT:
1442	RETVAL
1443		1116
1444	void	1117	void
1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1118	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1446	PROTOTYPE: $$$;$
1447	PPCODE:	1119	PPCODE:
1448	{	1120	{
1449	dREQ;	1121	dREQ;
1450		1122
		1123	req->type = EIO_WD_OPEN;
		1124	req_set_path1 (req, pathname);
		1125
		1126	REQ_SEND;
		1127	}
		1128
		1129	void
		1130	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1131	PPCODE:
		1132	{
		1133	dREQ;
		1134
1451	req->type = REQ_OPEN;	1135	req->type = EIO_OPEN;
1452	req->sv1 = newSVsv (pathname);	1136	req_set_path1 (req, pathname);
1453	req->ptr1 = SvPVbyte_nolen (req->sv1);
1454	req->int1 = flags;	1137	req->int1 = flags;
1455	req->mode = mode;	1138	req->int2 = mode;
1456		1139
1457	REQ_SEND;	1140	REQ_SEND;
1458	}	1141	}
1459		1142
1460	void	1143	void
1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1144	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1462	PROTOTYPE: $;$
1463	ALIAS:	1145	ALIAS:
1464	aio_close = REQ_CLOSE
1465	aio_fsync = REQ_FSYNC	1146	aio_fsync = EIO_FSYNC
1466	aio_fdatasync = REQ_FDATASYNC	1147	aio_fdatasync = EIO_FDATASYNC
		1148	aio_syncfs = EIO_SYNCFS
1467	PPCODE:	1149	PPCODE:
1468	{	1150	{
		1151	int fd = s_fileno_croak (fh, 0);
1469	dREQ;	1152	dREQ;
1470		1153
1471	req->type = ix;	1154	req->type = ix;
1472	req->sv1 = newSVsv (fh);	1155	req->sv1 = newSVsv (fh);
1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1156	req->int1 = fd;
1474		1157
1475	REQ_SEND (req);	1158	REQ_SEND;
1476	}	1159	}
1477		1160
1478	void	1161	void
		1162	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1163	PPCODE:
		1164	{
		1165	int fd = s_fileno_croak (fh, 0);
		1166	dREQ;
		1167
		1168	req->type = EIO_SYNC_FILE_RANGE;
		1169	req->sv1 = newSVsv (fh);
		1170	req->int1 = fd;
		1171	req->offs = offset;
		1172	req->size = nbytes;
		1173	req->int2 = flags;
		1174
		1175	REQ_SEND;
		1176	}
		1177
		1178	void
		1179	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1180	PPCODE:
		1181	{
		1182	int fd = s_fileno_croak (fh, 0);
		1183	dREQ;
		1184
		1185	req->type = EIO_FALLOCATE;
		1186	req->sv1 = newSVsv (fh);
		1187	req->int1 = fd;
		1188	req->int2 = mode;
		1189	req->offs = offset;
		1190	req->size = len;
		1191
		1192	REQ_SEND;
		1193	}
		1194
		1195	void
		1196	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1197	PPCODE:
		1198	{
		1199	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1200	int fd = s_fileno_croak (fh, 0);
		1201	dREQ;
		1202
		1203	if (expect_false (close_fd < 0))
		1204	{
		1205	int pipefd [2];
		1206
		1207	if (
		1208	#ifdef _WIN32
		1209	_pipe (pipefd, 1, _O_BINARY) < 0
		1210	#else
		1211	pipe (pipefd) < 0
		1212	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1213	#endif
		1214	|| close (pipefd [1]) < 0
		1215	)
		1216	abort (); /*D*/
		1217
		1218	close_fd = pipefd [0];
		1219	}
		1220
		1221	req->type = EIO_DUP2;
		1222	req->int1 = close_fd;
		1223	req->sv2 = newSVsv (fh);
		1224	req->int2 = fd;
		1225
		1226	REQ_SEND;
		1227	}
		1228
		1229	void
		1230	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1231	PPCODE:
		1232	{
		1233	int fd = s_fileno_croak (fh, 0);
		1234	dREQ;
		1235
		1236	req->type = EIO_SEEK;
		1237	req->sv1 = newSVsv (fh);
		1238	req->int1 = fd;
		1239	req->offs = SvVAL64 (offset);
		1240	req->int2 = whence;
		1241
		1242	REQ_SEND;
		1243	}
		1244
		1245	void
1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1246	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1480	ALIAS:	1247	ALIAS:
1481	aio_read = REQ_READ	1248	aio_read = EIO_READ
1482	aio_write = REQ_WRITE	1249	aio_write = EIO_WRITE
1483	PROTOTYPE: $$$$$;$
1484	PPCODE:	1250	PPCODE:
1485	{	1251	{
1486	STRLEN svlen;	1252	STRLEN svlen;
		1253	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1487	char *svptr = SvPVbyte (data, svlen);	1254	char *svptr = SvPVbyte (data, svlen);
1488	UV len = SvUV (length);	1255	UV len = SvUV (length);
1489		1256
1490	SvUPGRADE (data, SVt_PV);
1491	SvPOK_on (data);
1492
1493	if (dataoffset < 0)	1257	if (dataoffset < 0)
1494	dataoffset += svlen;	1258	dataoffset += svlen;
1495		1259
1496	if (dataoffset < 0 || dataoffset > svlen)	1260	if (dataoffset < 0 || dataoffset > svlen)
1497	croak ("dataoffset outside of data scalar");	1261	croak ("dataoffset outside of data scalar");
1498		1262
1499	if (ix == REQ_WRITE)	1263	if (ix == EIO_WRITE)
1500	{	1264	{
1501	/* write: check length and adjust. */	1265	/* write: check length and adjust. */
1502	if (!SvOK (length) || len + dataoffset > svlen)	1266	if (!SvOK (length) || len + dataoffset > svlen)
1503	len = svlen - dataoffset;	1267	len = svlen - dataoffset;
1504	}	1268	}
1505	else	1269	else
1506	{	1270	{
1507	/* read: grow scalar as necessary */	1271	/* read: check type and grow scalar as necessary */
		1272	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1508	svptr = SvGROW (data, len + dataoffset + 1);	1273	svptr = sv_grow (data, len + dataoffset + 1);
		1274	else if (SvCUR (data) < len + dataoffset)
		1275	croak ("length + dataoffset outside of scalar, and cannot grow");
1509	}	1276	}
1510
1511	if (len < 0)
1512	croak ("length must not be negative");
1513		1277
1514	{	1278	{
1515	dREQ;	1279	dREQ;
1516		1280
1517	req->type = ix;	1281	req->type = ix;
1518	req->sv1 = newSVsv (fh);	1282	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1283	req->int1 = fd;
1520	: IoOFP (sv_2io (fh)));
1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1284	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1522	req->size = len;	1285	req->size = len;
1523	req->sv2 = SvREFCNT_inc (data);	1286	req->sv2 = SvREFCNT_inc (data);
1524	req->ptr1 = (char *)svptr + dataoffset;	1287	req->ptr2 = (char *)svptr + dataoffset;
1525	req->stroffset = dataoffset;	1288	req->stroffset = dataoffset;
1526		1289
1527	if (!SvREADONLY (data))	1290	if (!SvREADONLY (data))
1528	{	1291	{
1529	SvREADONLY_on (data);	1292	SvREADONLY_on (data);
…		…
1533	REQ_SEND;	1296	REQ_SEND;
1534	}	1297	}
1535	}	1298	}
1536		1299
1537	void	1300	void
1538	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1301	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1539	PROTOTYPE: $$;$	1302	ALIAS:
		1303	aio_ioctl = EIO_IOCTL
		1304	aio_fcntl = EIO_FCNTL
1540	PPCODE:	1305	PPCODE:
1541	{	1306	{
1542	SV *data;	1307	int fd = s_fileno_croak (fh, 0);
1543	dREQ;	1308	char *svptr;
1544		1309
1545	data = newSV (NAME_MAX);	1310	if (SvPOK (arg) || !SvNIOK (arg))
1546	SvPOK_on (data);
1547
1548	req->type = REQ_READLINK;
1549	req->sv1 = newSVsv (path);
1550	req->ptr2 = SvPVbyte_nolen (req->sv1);
1551	req->sv2 = data;
1552	req->ptr1 = SvPVbyte_nolen (data);
1553
1554	REQ_SEND;
1555	}
1556
1557	void
1558	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1559	PROTOTYPE: $$$$;$
1560	PPCODE:
1561	{
1562	dREQ;
1563
1564	req->type = REQ_SENDFILE;
1565	req->sv1 = newSVsv (out_fh);
1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1567	req->sv2 = newSVsv (in_fh);
1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1569	req->offs = SvVAL64 (in_offset);
1570	req->size = length;
1571
1572	REQ_SEND;
1573	}
1574
1575	void
1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1577	PROTOTYPE: $$$;$
1578	PPCODE:
1579	{
1580	dREQ;
1581
1582	req->type = REQ_READAHEAD;
1583	req->sv1 = newSVsv (fh);
1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1585	req->offs = SvVAL64 (offset);
1586	req->size = length;
1587
1588	REQ_SEND;
1589	}
1590
1591	void
1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1593	ALIAS:
1594	aio_stat = REQ_STAT
1595	aio_lstat = REQ_LSTAT
1596	PPCODE:
1597	{
1598	dREQ;
1599
1600	req->ptr2 = malloc (sizeof (Stat_t));
1601	if (!req->ptr2)
1602	{	1311	{
1603	req_destroy (req);	1312	STRLEN svlen;
1604	croak ("out of memory during aio_stat statdata allocation");	1313	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1605	}	1314	#ifdef IOCPARM_LEN
		1315	STRLEN need = IOCPARM_LEN (request);
		1316	#else
		1317	STRLEN need = 256;
		1318	#endif
1606		1319
1607	req->flags |= FLAG_PTR2_FREE;	1320	if (svlen < need)
1608	req->sv1 = newSVsv (fh_or_path);	1321	svptr = SvGROW (arg, need);
1609
1610	if (SvPOK (fh_or_path))
1611	{
1612	req->type = ix;
1613	req->ptr1 = SvPVbyte_nolen (req->sv1);
1614	}	1322	}
1615	else	1323	else
		1324	svptr = (char *)SvIV (arg);
		1325
1616	{	1326	{
		1327	dREQ;
		1328
1617	req->type = REQ_FSTAT;	1329	req->type = ix;
1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1330	req->sv1 = newSVsv (fh);
		1331	req->int1 = fd;
		1332	req->int2 = (long)request;
		1333	req->sv2 = SvREFCNT_inc (arg);
		1334	req->ptr2 = svptr;
		1335
		1336	REQ_SEND;
1619	}	1337	}
		1338	}
		1339
		1340	void
		1341	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1342	ALIAS:
		1343	aio_readlink = EIO_READLINK
		1344	aio_realpath = EIO_REALPATH
		1345	PPCODE:
		1346	{
		1347	dREQ;
		1348
		1349	req->type = ix;
		1350	req_set_path1 (req, pathname);
1620		1351
1621	REQ_SEND;	1352	REQ_SEND;
1622	}	1353	}
1623		1354
1624	void	1355	void
		1356	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1357	PPCODE:
		1358	{
		1359	int ifd = s_fileno_croak (in_fh , 0);
		1360	int ofd = s_fileno_croak (out_fh, 1);
		1361	dREQ;
		1362
		1363	req->type = EIO_SENDFILE;
		1364	req->sv1 = newSVsv (out_fh);
		1365	req->int1 = ofd;
		1366	req->sv2 = newSVsv (in_fh);
		1367	req->int2 = ifd;
		1368	req->offs = in_offset;
		1369	req->size = length;
		1370
		1371	REQ_SEND;
		1372	}
		1373
		1374	void
		1375	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1376	PPCODE:
		1377	{
		1378	int fd = s_fileno_croak (fh, 0);
		1379	dREQ;
		1380
		1381	req->type = EIO_READAHEAD;
		1382	req->sv1 = newSVsv (fh);
		1383	req->int1 = fd;
		1384	req->offs = offset;
		1385	req->size = length;
		1386
		1387	REQ_SEND;
		1388	}
		1389
		1390	void
		1391	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1392	ALIAS:
		1393	aio_stat = EIO_STAT
		1394	aio_lstat = EIO_LSTAT
		1395	aio_statvfs = EIO_STATVFS
		1396	PPCODE:
		1397	{
		1398	dREQ;
		1399
		1400	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	UV
		1406	major (UV dev)
		1407	ALIAS:
		1408	minor = 1
		1409	CODE:
		1410	RETVAL = ix ? major (dev) : minor (dev);
		1411	OUTPUT:
		1412	RETVAL
		1413
		1414	UV
		1415	makedev (UV maj, UV min)
		1416	CODE:
		1417	RETVAL = makedev (maj, min);
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	void
1625	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1422	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1626	PPCODE:	1423	PPCODE:
1627	{	1424	{
1628	dREQ;	1425	dREQ;
1629		1426
1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1427	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1428	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1632	req->sv1 = newSVsv (fh_or_path);	1429	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1633
1634	if (SvPOK (fh_or_path))
1635	{
1636	req->type = REQ_UTIME;
1637	req->ptr1 = SvPVbyte_nolen (req->sv1);
1638	}
1639	else
1640	{
1641	req->type = REQ_FUTIME;
1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1643	}
1644		1430
1645	REQ_SEND;	1431	REQ_SEND;
1646	}	1432	}
1647		1433
1648	void	1434	void
1649	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1435	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1650	PPCODE:	1436	PPCODE:
1651	{	1437	{
1652	dREQ;	1438	dREQ;
1653		1439
1654	req->sv1 = newSVsv (fh_or_path);
1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1440	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1656		1441	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1657	if (SvPOK (fh_or_path))
1658	{
1659	req->type = REQ_TRUNCATE;
1660	req->ptr1 = SvPVbyte_nolen (req->sv1);
1661	}
1662	else
1663	{
1664	req->type = REQ_FTRUNCATE;
1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1666	}
1667		1442
1668	REQ_SEND;	1443	REQ_SEND;
1669	}	1444	}
1670		1445
1671	void	1446	void
1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1447	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1673	PPCODE:	1448	PPCODE:
1674	{	1449	{
1675	dREQ;	1450	dREQ;
1676		1451
1677	req->mode = mode;	1452	req->int2 = mode;
1678	req->sv1 = newSVsv (fh_or_path);	1453	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1679
1680	if (SvPOK (fh_or_path))
1681	{
1682	req->type = REQ_CHMOD;
1683	req->ptr1 = SvPVbyte_nolen (req->sv1);
1684	}
1685	else
1686	{
1687	req->type = REQ_FCHMOD;
1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1689	}
1690		1454
1691	REQ_SEND;	1455	REQ_SEND;
1692	}	1456	}
1693		1457
1694	void	1458	void
1695	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1459	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1696	PPCODE:	1460	PPCODE:
1697	{	1461	{
1698	dREQ;	1462	dREQ;
1699		1463
1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1464	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1465	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1702	req->sv1 = newSVsv (fh_or_path);	1466	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1703
1704	if (SvPOK (fh_or_path))
1705	{
1706	req->type = REQ_CHOWN;
1707	req->ptr1 = SvPVbyte_nolen (req->sv1);
1708	}
1709	else
1710	{
1711	req->type = REQ_FCHOWN;
1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1713	}
1714		1467
1715	REQ_SEND;	1468	REQ_SEND;
1716	}	1469	}
1717		1470
1718	void	1471	void
		1472	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1473	PPCODE:
		1474	{
		1475	dREQ;
		1476
		1477	req->type = EIO_READDIR;
		1478	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1479
		1480	if (flags & EIO_READDIR_DENTS)
		1481	req->int1 |= EIO_READDIR_CUSTOM2;
		1482
		1483	req_set_path1 (req, pathname);
		1484
		1485	REQ_SEND;
		1486	}
		1487
		1488	void
		1489	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1490	PPCODE:
		1491	{
		1492	dREQ;
		1493
		1494	req->type = EIO_MKDIR;
		1495	req->int2 = mode;
		1496	req_set_path1 (req, pathname);
		1497
		1498	REQ_SEND;
		1499	}
		1500
		1501	void
1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1502	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1720	ALIAS:	1503	ALIAS:
1721	aio_unlink = REQ_UNLINK	1504	aio_unlink = EIO_UNLINK
1722	aio_rmdir = REQ_RMDIR	1505	aio_rmdir = EIO_RMDIR
1723	aio_readdir = REQ_READDIR	1506	aio_readdir = EIO_READDIR
1724	PPCODE:	1507	PPCODE:
1725	{	1508	{
1726	dREQ;	1509	dREQ;
1727		1510
1728	req->type = ix;	1511	req->type = ix;
1729	req->sv1 = newSVsv (pathname);	1512	req_set_path1 (req, pathname);
1730	req->ptr1 = SvPVbyte_nolen (req->sv1);
1731		1513
1732	REQ_SEND;	1514	REQ_SEND;
1733	}	1515	}
1734		1516
1735	void	1517	void
1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1518	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1519	ALIAS:
		1520	aio_link = EIO_LINK
		1521	aio_symlink = EIO_SYMLINK
		1522	aio_rename = EIO_RENAME
1737	PPCODE:	1523	PPCODE:
1738	{	1524	{
1739	dREQ;	1525	eio_wd wd2 = 0;
1740
1741	req->type = REQ_MKDIR;
1742	req->sv1 = newSVsv (pathname);
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	req->mode = mode;
1745
1746	REQ_SEND;
1747	}
1748
1749	void
1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1751	ALIAS:
1752	aio_link = REQ_LINK
1753	aio_symlink = REQ_SYMLINK
1754	aio_rename = REQ_RENAME
1755	PPCODE:
1756	{
1757	dREQ;	1526	dREQ;
1758		1527
1759	req->type = ix;	1528	req->type = ix;
1760	req->sv2 = newSVsv (oldpath);	1529	req_set_path1 (req, oldpath);
1761	req->ptr2 = SvPVbyte_nolen (req->sv2);	1530	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1762	req->sv1 = newSVsv (newpath);	1531	req->int3 = (long)wd2;
1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1764		1532
1765	REQ_SEND;	1533	REQ_SEND;
1766	}	1534	}
1767		1535
1768	void	1536	void
1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1537	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1770	PPCODE:	1538	PPCODE:
1771	{	1539	{
1772	dREQ;	1540	dREQ;
1773		1541
1774	req->type = REQ_MKNOD;	1542	req->type = EIO_MKNOD;
1775	req->sv1 = newSVsv (pathname);
1776	req->ptr1 = SvPVbyte_nolen (req->sv1);
1777	req->mode = (mode_t)mode;	1543	req->int2 = (mode_t)mode;
1778	req->offs = dev;	1544	req->offs = dev;
		1545	req_set_path1 (req, pathname);
1779		1546
1780	REQ_SEND;	1547	REQ_SEND;
1781	}	1548	}
1782		1549
1783	void	1550	void
		1551	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
		1552	ALIAS:
		1553	aio_mtouch = EIO_MTOUCH
		1554	aio_msync = EIO_MSYNC
		1555	PPCODE:
		1556	{
		1557	STRLEN svlen;
		1558	char *svptr = SvPVbyte (data, svlen);
		1559	UV len = SvUV (length);
		1560
		1561	if (offset < 0)
		1562	offset += svlen;
		1563
		1564	if (offset < 0 || offset > svlen)
		1565	croak ("offset outside of scalar");
		1566
		1567	if (!SvOK (length) || len + offset > svlen)
		1568	len = svlen - offset;
		1569
		1570	{
		1571	dREQ;
		1572
		1573	req->type = ix;
		1574	req->sv2 = SvREFCNT_inc (data);
		1575	req->ptr2 = (char *)svptr + offset;
		1576	req->size = len;
		1577	req->int1 = flags;
		1578
		1579	REQ_SEND;
		1580	}
		1581	}
		1582
		1583	void
		1584	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	STRLEN svlen;
		1588	char *svptr = SvPVbyte (data, svlen);
		1589	UV len = SvUV (length);
		1590
		1591	if (offset < 0)
		1592	offset += svlen;
		1593
		1594	if (offset < 0 || offset > svlen)
		1595	croak ("offset outside of scalar");
		1596
		1597	if (!SvOK (length) || len + offset > svlen)
		1598	len = svlen - offset;
		1599
		1600	{
		1601	dREQ;
		1602
		1603	req->type = EIO_MLOCK;
		1604	req->sv2 = SvREFCNT_inc (data);
		1605	req->ptr2 = (char *)svptr + offset;
		1606	req->size = len;
		1607
		1608	REQ_SEND;
		1609	}
		1610	}
		1611
		1612	void
		1613	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1614	PPCODE:
		1615	{
		1616	dREQ;
		1617
		1618	req->type = EIO_MLOCKALL;
		1619	req->int1 = flags;
		1620
		1621	REQ_SEND;
		1622	}
		1623
		1624	void
		1625	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1626	PPCODE:
		1627	{
		1628	int fd = s_fileno_croak (fh, 0);
		1629	dREQ;
		1630
		1631	req->type = EIO_CUSTOM;
		1632	req->sv1 = newSVsv (fh);
		1633	req->int1 = fd;
		1634
		1635	req->feed = fiemap;
		1636	#if HAVE_FIEMAP
		1637	/* keep our fingers crossed that the next two types are 64 bit */
		1638	req->offs = start;
		1639	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1640	req->int2 = flags;
		1641	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1642	#endif
		1643
		1644	REQ_SEND;
		1645	}
		1646
		1647	void
1784	aio_busy (double delay, SV *callback=&PL_sv_undef)	1648	aio_busy (double delay, SV *callback = &PL_sv_undef)
1785	PPCODE:	1649	PPCODE:
1786	{	1650	{
1787	dREQ;	1651	dREQ;
1788		1652
1789	req->type = REQ_BUSY;	1653	req->type = EIO_BUSY;
1790	req->nv1 = delay < 0. ? 0. : delay;	1654	req->nv1 = delay < 0. ? 0. : delay;
1791		1655
1792	REQ_SEND;	1656	REQ_SEND;
1793	}	1657	}
1794		1658
1795	void	1659	void
1796	aio_group (SV *callback=&PL_sv_undef)	1660	aio_group (SV *callback = &PL_sv_undef)
1797	PROTOTYPE: ;$
1798	PPCODE:	1661	PPCODE:
1799	{	1662	{
1800	dREQ;	1663	dREQ;
1801		1664
1802	req->type = REQ_GROUP;	1665	req->type = EIO_GROUP;
1803		1666
		1667	PUTBACK;
1804	req_send (req);	1668	req_submit (req);
		1669	SPAGAIN;
		1670
1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1671	XPUSHs (req_sv (req, aio_grp_stash));
1806	}	1672	}
1807		1673
1808	void	1674	void
1809	aio_nop (SV *callback=&PL_sv_undef)	1675	aio_nop (SV *callback = &PL_sv_undef)
		1676	ALIAS:
		1677	aio_nop = EIO_NOP
		1678	aio_sync = EIO_SYNC
1810	PPCODE:	1679	PPCODE:
1811	{	1680	{
1812	dREQ;	1681	dREQ;
1813		1682
1814	req->type = REQ_NOP;	1683	req->type = ix;
1815		1684
1816	REQ_SEND;	1685	REQ_SEND;
1817	}	1686	}
1818		1687
1819	int	1688	int
1820	aioreq_pri (int pri = 0)	1689	aioreq_pri (int pri = NO_INIT)
1821	PROTOTYPE: ;$
1822	CODE:	1690	CODE:
1823	RETVAL = next_pri - PRI_BIAS;	1691	RETVAL = next_pri;
1824	if (items > 0)	1692	if (items > 0)
1825	{	1693	{
1826	if (pri < PRI_MIN) pri = PRI_MIN;	1694	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1827	if (pri > PRI_MAX) pri = PRI_MAX;	1695	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1828	next_pri = pri + PRI_BIAS;	1696	next_pri = pri;
1829	}	1697	}
1830	OUTPUT:	1698	OUTPUT:
1831	RETVAL	1699	RETVAL
1832		1700
1833	void	1701	void
1834	aioreq_nice (int nice = 0)	1702	aioreq_nice (int nice = 0)
1835	CODE:	1703	CODE:
1836	nice = next_pri - nice;	1704	nice = next_pri - nice;
1837	if (nice < PRI_MIN) nice = PRI_MIN;	1705	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1838	if (nice > PRI_MAX) nice = PRI_MAX;	1706	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1839	next_pri = nice + PRI_BIAS;	1707	next_pri = nice;
1840		1708
1841	void	1709	void
1842	flush ()	1710	flush ()
1843	PROTOTYPE:
1844	CODE:	1711	CODE:
1845	while (nreqs)	1712	while (eio_nreqs ())
1846	{	1713	{
1847	poll_wait ();	1714	poll_wait ();
1848	poll_cb ();	1715	poll_cb ();
1849	}	1716	}
1850		1717
1851	int	1718	int
1852	poll()	1719	poll ()
1853	PROTOTYPE:
1854	CODE:	1720	CODE:
1855	poll_wait ();	1721	poll_wait ();
1856	RETVAL = poll_cb ();	1722	RETVAL = poll_cb ();
1857	OUTPUT:	1723	OUTPUT:
1858	RETVAL	1724	RETVAL
1859		1725
1860	int	1726	int
1861	poll_fileno()	1727	poll_fileno ()
1862	PROTOTYPE:
1863	CODE:	1728	CODE:
1864	RETVAL = respipe [0];	1729	RETVAL = s_epipe_fd (&respipe);
1865	OUTPUT:	1730	OUTPUT:
1866	RETVAL	1731	RETVAL
1867		1732
1868	int	1733	int
1869	poll_cb(...)	1734	poll_cb (...)
1870	PROTOTYPE:	1735	PROTOTYPE:
1871	CODE:	1736	CODE:
1872	RETVAL = poll_cb ();	1737	RETVAL = poll_cb ();
1873	OUTPUT:	1738	OUTPUT:
1874	RETVAL	1739	RETVAL
1875		1740
1876	void	1741	void
1877	poll_wait()	1742	poll_wait ()
1878	PROTOTYPE:
1879	CODE:	1743	CODE:
1880	poll_wait ();	1744	poll_wait ();
1881		1745
1882	void
1883	setsig (int signum = SIGIO)
1884	PROTOTYPE: ;$
1885	CODE:
1886	{
1887	if (block_sig_level)
1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1889
1890	X_LOCK (reslock);
1891	main_tid = pthread_self ();
1892	main_sig = signum;
1893	X_UNLOCK (reslock);
1894
1895	if (main_sig && npending)
1896	pthread_kill (main_tid, main_sig);
1897	}
1898
1899	void
1900	aio_block (SV *cb)
1901	PROTOTYPE: &
1902	PPCODE:
1903	{
1904	int count;
1905
1906	block_sig ();
1907	PUSHMARK (SP);
1908	PUTBACK;
1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1910	SPAGAIN;
1911	unblock_sig ();
1912
1913	if (SvTRUE (ERRSV))
1914	croak (0);
1915
1916	XSRETURN (count);
1917	}
1918
1919	int	1746	int
1920	nreqs()	1747	nreqs ()
1921	PROTOTYPE:
1922	CODE:	1748	CODE:
1923	RETVAL = nreqs;	1749	RETVAL = eio_nreqs ();
1924	OUTPUT:	1750	OUTPUT:
1925	RETVAL	1751	RETVAL
1926		1752
1927	int	1753	int
1928	nready()	1754	nready ()
1929	PROTOTYPE:
1930	CODE:	1755	CODE:
1931	RETVAL = get_nready ();	1756	RETVAL = eio_nready ();
1932	OUTPUT:	1757	OUTPUT:
1933	RETVAL	1758	RETVAL
1934		1759
1935	int	1760	int
1936	npending()	1761	npending ()
1937	PROTOTYPE:
1938	CODE:	1762	CODE:
1939	RETVAL = get_npending ();	1763	RETVAL = eio_npending ();
1940	OUTPUT:	1764	OUTPUT:
1941	RETVAL	1765	RETVAL
1942		1766
1943	int	1767	int
1944	nthreads()	1768	nthreads ()
1945	PROTOTYPE:
1946	CODE:	1769	CODE:
1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1770	RETVAL = eio_nthreads ();
1948	RETVAL = started;
1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1950	OUTPUT:	1771	OUTPUT:
1951	RETVAL	1772	RETVAL
1952		1773
		1774	int
		1775	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1776	CODE:
		1777	RETVAL = posix_fadvise (fh, offset, length, advice);
		1778	OUTPUT:
		1779	RETVAL
		1780
		1781	IV
		1782	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1783	CODE:
		1784	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1785	OUTPUT:
		1786	RETVAL
		1787
		1788	void
		1789	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1790	PPCODE:
		1791	sv_unmagic (scalar, MMAP_MAGIC);
		1792	{
		1793	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1794	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1795	if (addr == (void *)-1)
		1796	XSRETURN_NO;
		1797
		1798	sv_force_normal (scalar);
		1799
		1800	/* we store the length in mg_obj, as namlen is I32 :/ */
		1801	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1802	->mg_obj = (SV *)length;
		1803
		1804	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1805
		1806	if (!(prot & PROT_WRITE))
		1807	SvREADONLY_on (scalar);
		1808
		1809	if (SvLEN (scalar))
		1810	Safefree (SvPVX (scalar));
		1811
		1812	SvPVX (scalar) = (char *)addr;
		1813	SvCUR_set (scalar, length);
		1814	SvLEN_set (scalar, 0);
		1815	SvPOK_only (scalar);
		1816
		1817	XSRETURN_YES;
		1818	}
		1819
		1820	void
		1821	munmap (SV *scalar)
		1822	CODE:
		1823	sv_unmagic (scalar, MMAP_MAGIC);
		1824
		1825	int
		1826	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1827	ALIAS:
		1828	mprotect = 1
		1829	CODE:
		1830	{
		1831	STRLEN svlen;
		1832	void *addr = SvPVbyte (scalar, svlen);
		1833	STRLEN len = SvUV (length);
		1834
		1835	if (offset < 0)
		1836	offset += svlen;
		1837
		1838	if (offset < 0 || offset > svlen)
		1839	croak ("offset outside of scalar");
		1840
		1841	if (!SvOK (length) || len + offset > svlen)
		1842	len = svlen - offset;
		1843
		1844	addr = (void *)(((intptr_t)addr) + offset);
		1845	eio_page_align (&addr, &len);
		1846
		1847	switch (ix)
		1848	{
		1849	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1850	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1851	}
		1852	}
		1853	OUTPUT:
		1854	RETVAL
		1855
		1856	int
		1857	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1858	CODE:
		1859	{
		1860	STRLEN svlen;
		1861	void *addr = SvPVbyte (scalar, svlen);
		1862	size_t len = SvUV (length);
		1863
		1864	if (offset < 0)
		1865	offset += svlen;
		1866
		1867	if (offset < 0 || offset > svlen)
		1868	croak ("offset outside of scalar");
		1869
		1870	if (!SvOK (length) || len + offset > svlen)
		1871	len = svlen - offset;
		1872
		1873	addr = (void *)(((intptr_t)addr) + offset);
		1874	eio_page_align (&addr, &len);
		1875	#if _POSIX_MEMLOCK_RANGE
		1876	RETVAL = munlock (addr, len);
		1877	#else
		1878	RETVAL = EIO_ENOSYS ();
		1879	#endif
		1880	}
		1881	OUTPUT:
		1882	RETVAL
		1883
		1884	int
		1885	munlockall ()
		1886	CODE:
		1887	#if _POSIX_MEMLOCK
		1888	munlockall ();
		1889	#else
		1890	RETVAL = EIO_ENOSYS ();
		1891	#endif
		1892	OUTPUT:
		1893	RETVAL
		1894
		1895	int
		1896	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1897	CODE:
		1898	{
		1899	#if HAVE_LINUX_SPLICE
		1900	loff_t off_in_, off_out_;
		1901	RETVAL = splice (
		1902	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1903	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1904	length, flags
		1905	);
		1906	#else
		1907	RETVAL = EIO_ENOSYS ();
		1908	#endif
		1909	}
		1910	OUTPUT:
		1911	RETVAL
		1912
		1913	int
		1914	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1915	CODE:
		1916	#if HAVE_LINUX_SPLICE
		1917	RETVAL = tee (rfh, wfh, length, flags);
		1918	#else
		1919	RETVAL = EIO_ENOSYS ();
		1920	#endif
		1921	OUTPUT:
		1922	RETVAL
		1923
		1924	int
		1925	pipesize (aio_rfd rfh, int new_size = -1)
		1926	PROTOTYPE: $;$
		1927	CODE:
		1928	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1929	if (new_size >= 0)
		1930	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1931	else
		1932	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1933	#else
		1934	errno = ENOSYS;
		1935	RETVAL = -1;
		1936	#endif
		1937	OUTPUT:
		1938	RETVAL
		1939
		1940	void
		1941	pipe2 (int flags = 0)
		1942	PROTOTYPE: ;$
		1943	PPCODE:
		1944	{
		1945	int fd[2];
		1946	int res;
		1947
		1948	if (flags)
		1949	#if HAVE_PIPE2
		1950	res = pipe2 (fd, flags);
		1951	#else
		1952	res = (errno = ENOSYS, -1);
		1953	#endif
		1954	else
		1955	res = pipe (fd);
		1956
		1957	if (!res)
		1958	{
		1959	EXTEND (SP, 2);
		1960	PUSHs (newmortalFH (fd[0], O_RDONLY));
		1961	PUSHs (newmortalFH (fd[1], O_WRONLY));
		1962	}
		1963	}
		1964
		1965	void _on_next_submit (SV *cb)
		1966	CODE:
		1967	SvREFCNT_dec (on_next_submit);
		1968	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1969
1953	PROTOTYPES: DISABLE	1970	PROTOTYPES: DISABLE
		1971
		1972	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1973
		1974	BOOT:
		1975	{
		1976	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1977	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1978	}
		1979
		1980	void
		1981	DESTROY (SV *self)
		1982	CODE:
		1983	{
		1984	aio_wd wd = SvAIO_WD (self);
		1985	#if HAVE_AT
		1986	{
		1987	SV *callback = &PL_sv_undef;
		1988	dREQ; /* clobbers next_pri :/ */
		1989	next_pri = req->pri; /* restore next_pri */
		1990	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1991	req->type = EIO_WD_CLOSE;
		1992	req->wd = wd;
		1993	REQ_SEND;
		1994	}
		1995	#else
		1996	eio_wd_close_sync (wd);
		1997	#endif
		1998	}
1954		1999
1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2000	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1956		2001
1957	void	2002	void
1958	cancel (aio_req_ornot req)	2003	cancel (aio_req_ornot req)
1959	CODE:	2004	CODE:
1960	req_cancel (req);	2005	eio_cancel (req);
1961		2006
1962	void	2007	void
1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2008	cb (aio_req_ornot req, SV *callback = NO_INIT)
1964	CODE:	2009	PPCODE:
		2010	{
		2011	if (GIMME_V != G_VOID)
		2012	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2013
		2014	if (items > 1)
		2015	{
		2016	SV *cb_cv = get_cb (callback);
		2017
1965	SvREFCNT_dec (req->callback);	2018	SvREFCNT_dec (req->callback);
1966	req->callback = newSVsv (callback);	2019	req->callback = SvREFCNT_inc (cb_cv);
		2020	}
		2021	}
1967		2022
1968	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2023	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1969		2024
1970	void	2025	void
1971	add (aio_req grp, ...)	2026	add (aio_req grp, ...)
1972	PPCODE:	2027	PPCODE:
1973	{	2028	{
1974	int i;	2029	int i;
1975	aio_req req;
1976
1977	if (main_sig && !block_sig_level)
1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1979		2030
1980	if (grp->int1 == 2)	2031	if (grp->int1 == 2)
1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2032	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1982		2033
1983	for (i = 1; i < items; ++i )	2034	for (i = 1; i < items; ++i )
1984	{	2035	{
		2036	aio_req req;
		2037
1985	if (GIMME_V != G_VOID)	2038	if (GIMME_V != G_VOID)
1986	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2039	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1987		2040
1988	req = SvAIO_REQ (ST (i));	2041	req = SvAIO_REQ (ST (i));
1989		2042
1990	if (req)	2043	if (req)
1991	{	2044	eio_grp_add (grp, req);
1992	++grp->size;
1993	req->grp = grp;
1994
1995	req->grp_prev = 0;
1996	req->grp_next = grp->grp_first;
1997
1998	if (grp->grp_first)
1999	grp->grp_first->grp_prev = req;
2000
2001	grp->grp_first = req;
2002	}
2003	}	2045	}
2004	}	2046	}
2005		2047
2006	void	2048	void
2007	cancel_subs (aio_req_ornot req)	2049	cancel_subs (aio_req_ornot req)
…		…
2016	AV *av;	2058	AV *av;
2017		2059
2018	grp->errorno = errno;	2060	grp->errorno = errno;
2019		2061
2020	av = newAV ();	2062	av = newAV ();
		2063	av_extend (av, items - 1);
2021		2064
2022	for (i = 1; i < items; ++i )	2065	for (i = 1; i < items; ++i )
2023	av_push (av, newSVsv (ST (i)));	2066	av_push (av, newSVsv (ST (i)));
2024		2067
2025	SvREFCNT_dec (grp->sv1);	2068	SvREFCNT_dec (grp->sv1);
…		…
2032	grp->errorno = errorno;	2075	grp->errorno = errorno;
2033		2076
2034	void	2077	void
2035	limit (aio_req grp, int limit)	2078	limit (aio_req grp, int limit)
2036	CODE:	2079	CODE:
2037	grp->int2 = limit;	2080	eio_grp_limit (grp, limit);
2038	aio_grp_feed (grp);
2039		2081
2040	void	2082	void
2041	feed (aio_req grp, SV *callback=&PL_sv_undef)	2083	feed (aio_req grp, SV *callback = &PL_sv_undef)
2042	CODE:	2084	CODE:
2043	{	2085	{
2044	SvREFCNT_dec (grp->sv2);	2086	SvREFCNT_dec (grp->sv2);
2045	grp->sv2 = newSVsv (callback);	2087	grp->sv2 = newSVsv (callback);
		2088	grp->feed = aio_grp_feed;
2046		2089
2047	if (grp->int2 <= 0)	2090	if (grp->int2 <= 0)
2048	grp->int2 = 2;	2091	grp->int2 = 2;
2049		2092
2050	aio_grp_feed (grp);	2093	eio_grp_limit (grp, grp->int2);
2051	}	2094	}
2052		2095

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