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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.232 by root, Sat Jun 13 00:06:13 2015 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
29	# undef send	55	#undef send
30	# undef recv	56	#undef recv
31	# undef stat	57	#undef stat
		58	#undef lstat
32	# undef fstat	59	#undef fstat
33	# define lstat stat
34	# undef truncate	60	#undef truncate
35	# undef ftruncate	61	#undef ftruncate
36	# undef open	62	#undef open
		63	#undef link
37	# undef close	64	#undef close
38	# undef unlink	65	#undef unlink
		66	#undef mkdir
39	# undef rmdir	67	#undef rmdir
40	# undef rename	68	#undef rename
41	# 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
42		79
43	# define chown(a,b,c) (errno = ENOSYS, -1)	80	#define EIO_STRUCT_STAT struct _stati64
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	81	#define EIO_STRUCT_STATI64
45	# define fchmod(a,b) (errno = ENOSYS, -1)
46	# define symlink(a,b) (errno = ENOSYS, -1)
47	# define readlink(a,b,c) (errno = ENOSYS, -1)
48	# define mknod(a,b,c) (errno = ENOSYS, -1)
49	# define truncate(a,b) (errno = ENOSYS, -1)
50	# define ftruncate(fd,o) chsize ((fd), (o))
51	# define fsync(fd) _commit (fd)
52	# define opendir(fd) (errno = ENOSYS, 0)
53	# define readdir(fd) (errno = ENOSYS, -1)
54	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)
56		82
57	#else	83	#else
58		84
59	# include "autoconf/config.h"
60	# include <sys/time.h>	85	#include <sys/time.h>
61	# include <sys/select.h>	86	#include <sys/select.h>
62	# include <unistd.h>	87	#include <unistd.h>
63	# include <utime.h>	88	#include <utime.h>
64	# include <signal.h>	89	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		90
67	#endif	91	#define EIO_STRUCT_STAT Stat_t
68		92
69	#if HAVE_SENDFILE	93	#endif
70	# if __linux	94
71	# include <sys/sendfile.h>	95	/*****************************************************************************/
72	# elif __freebsd	96
73	# include <sys/socket.h>	97	#if __GNUC__ >= 3
74	# include <sys/uio.h>	98	# define expect(expr,value) __builtin_expect ((expr),(value))
75	# elif __hpux	99	#else
76	# include <sys/socket.h>	100	# define expect(expr,value) (expr)
77	# elif __solaris /* not yet */	101	#endif
78	# 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
79	# else	144	# else
80	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81	# endif	146	# endif
82	#endif	147	#endif
83		148
84	/* number of seconds after which idle threads exit */	149	/* defines all sorts of constants to 0 unless they are already defined */
85	#define IDLE_TIMEOUT 10	150	#include "def0.h"
86		151
87	/* used for struct dirent, AIX doesn't provide it */	152	#ifndef makedev
88	#ifndef NAME_MAX	153	# define makedev(maj,min) (((maj) << 8) | (min))
89	# define NAME_MAX 4096
90	#endif	154	#endif
91		155	#ifndef major
92	/* buffer size for various temporary buffers */	156	# define major(dev) ((dev) >> 8)
93	#define AIO_BUFSIZE 65536
94
95	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8
97	# define SvVAL64 SvIV
98	#else
99	# define SvVAL64 SvNV
100	#endif	157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
101		161
102	#define dBUF \	162	#if PAGESIZE <= 0
103	char *aio_buf; \	163	# define PAGESIZE sysconf (_SC_PAGESIZE)
104	X_LOCK (wrklock); \	164	#endif
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
106	X_UNLOCK (wrklock); \
107	if (!aio_buf) \
108	return -1;
109		165
110	typedef SV SV8; /* byte-sv, used for argument-checking */	166	/*****************************************************************************/
111		167
112	enum {	168	static void
113	REQ_QUIT,	169	fiemap (eio_req *req)
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};
129
130	#define AIO_REQ_KLASS "IO::AIO::REQ"
131	#define AIO_GRP_KLASS "IO::AIO::GRP"
132
133	typedef struct aio_cb
134	{	170	{
135	struct aio_cb *volatile next;	171	req->result = -1;
136		172
137	SV *callback;	173	#if HAVE_FIEMAP
138	SV *sv1, *sv2;	174	/* assume some c99 */
139	void *ptr1, *ptr2;	175	struct fiemap *fiemap = 0;
140	off_t offs;	176	size_t end_offset;
141	size_t size;	177	int count = req->int3;
142	ssize_t result;
143	double nv1, nv2;
144		178
145	STRLEN stroffset;	179	req->flags |= EIO_FLAG_PTR1_FREE;
146	int type;
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150		180
151	unsigned char flags;	181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
152	unsigned char pri;	182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
153		185
154	SV *self; /* the perl counterpart of this request, if any */	186	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	187	errno = ENOMEM;
156	} aio_cb;	188	if (!fiemap)
157
158	enum {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};
163
164	typedef aio_cb *aio_req;
165	typedef aio_cb *aio_req_ornot;
166
167	enum {
168	PRI_MIN = -4,
169	PRI_MAX = 4,
170
171	DEFAULT_PRI = 0,
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187
188	static thread_t main_tid;
189	static int main_sig;
190	static int block_sig_level;
191
192	void block_sig ()
193	{
194	sigset_t ss;
195
196	if (block_sig_level++)
197	return;	189	return;
198		190
199	if (!main_sig)	191	req->ptr1 = fiemap;
		192
		193	fiemap->fm_start = req->offs;
		194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
		197
		198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
200	return;	199	return;
201		200
202	sigemptyset (&ss);	201	if (req->int3 >= 0 /* not autosizing */
203	sigaddset (&ss, main_sig);	202	|| !fiemap->fm_mapped_extents /* no more extents */
204	pthread_sigmask (SIG_BLOCK, &ss, 0);	203	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
205	}	204	goto done;
206		205
207	void unblock_sig ()	206	/* else we have to loop -
208	{	207	* it would be tempting (actually I tried that first) to just query the
209	sigset_t ss;	208	* number of extents needed, but linux often feels like not returning all
		209	* extents, without telling us it left any out. this complicates
		210	* this quite a bit.
		211	*/
210		212
211	if (--block_sig_level)	213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
212	return;
213		214
214	if (!main_sig)	215	for (;;)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224	static unsigned int started, idle, wanted;
225
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{	216	{
247	closedir (wrk->dirp);	217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
248	wrk->dirp = 0;	218	char scratch[3072];
249	}	219	struct fiemap *incmap = (struct fiemap *)scratch;
250		220
251	if (wrk->dbuf)	221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
252	{	222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
253	free (wrk->dbuf);	223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
254	wrk->dbuf = 0;	224	incmap->fm_flags = fiemap->fm_flags;
255	}	225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
256	}
257		226
258	static void worker_free (worker *wrk)	227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe_osf [2], respipe [2] = { -1, -1 };
270
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;	228	return;
353		229
354	--q->size;	230	if (!incmap->fm_mapped_extents)
		231	goto done;
355		232
356	for (pri = NUM_PRI; pri--; )	233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
357	{	234	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
358	aio_req req = q->qs[pri];	235	errno = ENOMEM;
359
360	if (req)	236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
361	{	242	{
362	if (!(q->qs[pri] = req->next))	243	struct fiemap_extent *e = incmap->fm_extents + count;
363	q->qe[pri] = 0;
364		244
365	return req;	245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
366	}	253	}
367	}	254	}
368		255
369	abort ();	256	done:
370	}	257	req->result = 0;
371		258
372	static int poll_cb ();	259	#else
373	static int req_invoke (aio_req req);	260	errno = ENOSYS;
		261	#endif
		262	}
		263
		264	/*****************************************************************************/
		265
		266	enum {
		267	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		268	};
		269
		270	typedef eio_req *aio_req;
		271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
		273
		274	static SV *on_next_submit;
		275	static int next_pri = EIO_PRI_DEFAULT;
		276	static int max_outstanding;
		277
		278	static s_epipe respipe;
		279
374	static void req_destroy (aio_req req);	280	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	281	static void req_cancel (aio_req req);
376		282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
		296
377	/* must be called at most once */	297	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
379	{	300	{
380	if (!req->self)	301	if (!req->self)
381	{	302	{
382	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384	}	305	}
385		306
386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387	}	308	}
388		309
389	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
390	{	318	{
391	MAGIC *mg;	319	MAGIC *mg;
392		320
393	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
394	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
395		327
396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397		329
398	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	331	}
400		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static void
401	static void aio_grp_feed (aio_req grp)	345	aio_grp_feed (aio_req grp)
402	{	346	{
403	block_sig ();	347	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	348	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	349	dSP;
412		350
413	ENTER;	351	ENTER;
414	SAVETMPS;	352	SAVETMPS;
415	PUSHMARK (SP);	353	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	354	XPUSHs (req_sv (grp, aio_grp_stash));
417	PUTBACK;	355	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	356	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	357	SPAGAIN;
420	FREETMPS;	358	FREETMPS;
421	LEAVE;	359	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	360	}
432
433	unblock_sig ();
434	}	361	}
435		362
436	static void aio_grp_dec (aio_req grp)	363	static void
		364	req_submit (eio_req *req)
437	{	365	{
438	--grp->size;	366	eio_submit (req);
439		367
440	/* call feeder, if applicable */	368	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	369	{
446	block_sig ();	370	dSP;
		371	SV *cb = sv_2mortal (on_next_submit);
447		372
448	if (!req_invoke (grp))	373	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		374
455	req_destroy (grp);	375	PUSHMARK (SP);
456	unblock_sig ();	376	PUTBACK;
		377	call_sv (cb, G_DISCARD | G_EVAL);
457	}	378	}
458	}	379	}
459		380
		381	static int
460	static int req_invoke (aio_req req)	382	req_invoke (eio_req *req)
461	{	383	{
462	dSP;
463
464	if (req->flags & FLAG_SV2_RO_OFF)	384	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	385	SvREADONLY_off (req->sv2);
466		386
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	387	if (!EIO_CANCELLED (req) && req->callback)
468	{	388	{
		389	dSP;
		390	static SV *sv_result_cache; /* caches the result integer SV */
		391	SV *sv_result;
		392
469	ENTER;	393	ENTER;
470	SAVETMPS;	394	SAVETMPS;
471	PUSHMARK (SP);	395	PUSHMARK (SP);
472	EXTEND (SP, 1);	396	EXTEND (SP, 1);
473		397
		398	/* do not recreate the result IV from scratch each time */
		399	if (expect_true (sv_result_cache))
		400	{
		401	sv_result = sv_result_cache; sv_result_cache = 0;
		402	SvIV_set (sv_result, req->result);
		403	SvIOK_only (sv_result);
		404	}
		405	else
		406	{
		407	sv_result = newSViv (req->result);
		408	SvREADONLY_on (sv_result);
		409	}
		410
474	switch (req->type)	411	switch (req->type)
475	{	412	{
		413	case EIO_WD_OPEN:
		414	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		415	break;
		416
476	case REQ_READDIR:	417	case EIO_READDIR:
477	{	418	{
478	SV *rv = &PL_sv_undef;	419	SV *rv = &PL_sv_undef;
479		420
480	if (req->result >= 0)	421	if (req->result >= 0)
481	{	422	{
482	int i;	423	int i;
483	char *buf = req->ptr2;	424	char *names = (char *)req->ptr2;
		425	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484	AV *av = newAV ();	426	AV *av = newAV ();
485		427
486	av_extend (av, req->result - 1);	428	av_extend (av, req->result - 1);
487		429
488	for (i = 0; i < req->result; ++i)	430	for (i = 0; i < req->result; ++i)
489	{	431	{
490	SV *sv = newSVpv (buf, 0);	432	if (req->int1 & EIO_READDIR_DENTS)
		433	{
		434	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491		435
		436	if (req->int1 & EIO_READDIR_CUSTOM2)
		437	{
		438	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		439	AV *avent = newAV ();
		440
		441	av_extend (avent, 2);
		442
		443	if (!sv_type [ent->type])
		444	{
		445	sv_type [ent->type] = newSViv (ent->type);
		446	SvREADONLY_on (sv_type [ent->type]);
		447	}
		448
		449	av_store (avent, 0, namesv);
		450	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		451	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		452
		453	av_store (av, i, newRV_noinc ((SV *)avent));
		454	}
		455	else
492	av_store (av, i, sv);	456	av_store (av, i, namesv);
		457
		458	++ent;
		459	}
		460	else
		461	{
		462	SV *name = newSVpv (names, 0);
		463	av_store (av, i, name);
493	buf += SvCUR (sv) + 1;	464	names += SvCUR (name) + 1;
		465	}
494	}	466	}
495		467
496	rv = sv_2mortal (newRV_noinc ((SV *)av));	468	rv = sv_2mortal (newRV_noinc ((SV *)av));
497	}	469	}
498		470
499	PUSHs (rv);	471	PUSHs (rv);
		472
		473	if (req->int1 & EIO_READDIR_CUSTOM1)
		474	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500	}	475	}
501	break;	476	break;
502		477
503	case REQ_OPEN:	478	case EIO_OPEN:
504	{	479	{
505	/* convert fd to fh */	480	/* convert fd to fh */
506	SV *fh;	481	SV *fh = &PL_sv_undef;
507		482
508	PUSHs (sv_2mortal (newSViv (req->result)));	483	if (req->result >= 0)
509	PUTBACK;	484	{
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	485	GV *gv = (GV *)sv_newmortal ();
511	SPAGAIN;	486	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		487	char sym [64];
		488	int symlen;
		489
		490	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		491	gv_init (gv, aio_stash, sym, symlen, 0);
512		492
513	fh = POPs;	493	symlen = snprintf (
514	PUSHMARK (SP);	494	sym,
		495	sizeof (sym),
		496	"%s&=%d",
		497	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		498	(int)req->result
		499	);
		500
		501	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		502	fh = (SV *)gv;
		503	}
		504
515	XPUSHs (fh);	505	PUSHs (fh);
516	}	506	}
517	break;	507	break;
518		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
		511	{
		512	SV *rv = &PL_sv_undef;
		513
		514	#ifndef _WIN32
		515	if (req->result >= 0)
		516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		518	HV *hv = newHV ();
		519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		520	* chooses to make it a struct.
		521	*/
		522	unsigned long fsid = 0;
		523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		524
		525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		526
		527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		528	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		529	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		530	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		531	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		532	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		533	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		534	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		535	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		536	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		537	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		538	}
		539	#endif
		540
		541	PUSHs (rv);
		542	}
		543
		544	break;
		545
519	case REQ_GROUP:	546	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	547	req->int1 = 2; /* mark group as finished */
521		548
522	if (req->sv1)	549	if (req->sv1)
523	{	550	{
524	int i;	551	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	555	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	556	PUSHs (*av_fetch (av, i, 0));
530	}	557	}
531	break;	558	break;
532		559
533	case REQ_NOP:	560	case EIO_NOP:
534	case REQ_BUSY:	561	case EIO_BUSY:
535	break;	562	break;
536		563
537	case REQ_READLINK:	564	case EIO_READLINK:
		565	case EIO_REALPATH:
538	if (req->result > 0)	566	if (req->result > 0)
		567	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		568	break;
		569
		570	case EIO_STAT:
		571	case EIO_LSTAT:
		572	case EIO_FSTAT:
		573	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		574
		575	if (!(PL_laststatval = req->result))
		576	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		577	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		578
		579	PUSHs (sv_result);
		580	break;
		581
		582	case EIO_SEEK:
		583	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		584	break;
		585
		586	case EIO_READ:
		587	{
		588	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		589	*SvEND (req->sv2) = 0;
		590	SvPOK_only (req->sv2);
		591	SvSETMAGIC (req->sv2);
		592	PUSHs (sv_result);
		593	}
		594	break;
		595
		596	case EIO_CUSTOM:
		597	if (req->feed == fiemap)
539	{	598	{
540	SvCUR_set (req->sv2, req->result);	599	#if HAVE_FIEMAP
541	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);	600	if (!req->result)
		601	{
		602	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		603
		604	if (fiemap->fm_extent_count)
		605	{
		606	AV *av = newAV ();
		607	int i;
		608
		609	while (fiemap->fm_mapped_extents)
		610	{
		611	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		612	AV *ext_av = newAV ();
		613
		614	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		615	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		616	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		617	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		618
		619	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		620	}
		621
		622	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		623	}
		624	else
		625	{
		626	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		627	PUSHs (sv_result);
		628	}
		629	}
		630	#endif
543	}	631	}
		632	else
		633	PUSHs (sv_result);
544	break;	634	break;
545		635
546	case REQ_STAT:	636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
547	case REQ_LSTAT:	637	if (req->result > 0)
548	case REQ_FSTAT:	638	SvIV_set (sv_result, 0);
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	639	/* FALLTHROUGH */
550	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));
553	break;
554
555	case REQ_READ:
556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));
559	break;
560		640
561	default:	641	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	642	PUSHs (sv_result);
563	break;	643	break;
564	}	644	}
565		645
566	errno = req->errorno;	646	errno = req->errorno;
567		647
568	PUTBACK;	648	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	649	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	650	SPAGAIN;
		651
		652	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		653	SvREFCNT_dec (sv_result);
		654	else
		655	sv_result_cache = sv_result;
571		656
572	FREETMPS;	657	FREETMPS;
573	LEAVE;	658	LEAVE;
		659
		660	PUTBACK;
574	}	661	}
575		662
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	663	return !!SvTRUE (ERRSV);
591	}	664	}
592		665
		666	static void
593	static void req_destroy (aio_req req)	667	req_destroy (aio_req req)
594	{	668	{
595	if (req->self)	669	if (req->self)
596	{	670	{
597	sv_unmagic (req->self, PERL_MAGIC_ext);	671	sv_unmagic (req->self, PERL_MAGIC_ext);
598	SvREFCNT_dec (req->self);	672	SvREFCNT_dec (req->self);
599	}	673	}
600		674
601	SvREFCNT_dec (req->sv1);	675	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
603	SvREFCNT_dec (req->callback);	679	SvREFCNT_dec (req->callback);
604		680
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	681	free (req);
609	}	682	}
610		683
		684	static void
611	static void req_cancel_subs (aio_req grp)	685	req_cancel_subs (aio_req grp)
612	{	686	{
613	aio_req sub;
614
615	if (grp->type != REQ_GROUP)	687	if (grp->type != EIO_GROUP)
616	return;	688	return;
617		689
618	SvREFCNT_dec (grp->sv2);	690	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	691	grp->sv2 = 0;
620		692
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	693	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}	694	}
624		695
625	static void req_cancel (aio_req req)	696	static void ecb_cold
		697	create_respipe (void)
626	{	698	{
627	req->flags |= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
628		700	croak ("IO::AIO: unable to initialize result pipe");
629	req_cancel_subs (req);
630	}	701	}
631
632	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else
635	# define TO_SOCKET(x) (x)
636	#endif
637		702
638	static void	703	static void
639	create_respipe ()	704	poll_wait (void)
640	{	705	{
641	int old_readfd = respipe [0];
642
643	if (respipe [1] >= 0)
644	respipe_close (TO_SOCKET (respipe [1]));
645
646	#ifdef _WIN32
647	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
648	#else
649	if (pipe (respipe))
650	#endif
651	croak ("unable to initialize result pipe");
652
653	if (old_readfd >= 0)
654	{
655	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
656	croak ("unable to initialize result pipe(2)");
657
658	respipe_close (respipe [0]);
659	respipe [0] = old_readfd;
660	}
661
662	#ifdef _WIN32
663	int arg = 1;
664	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
665	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
666	#else
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
668	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
669	#endif
670	croak ("unable to initialize result pipe(3)");
671
672	respipe_osf [0] = TO_SOCKET (respipe [0]);
673	respipe_osf [1] = TO_SOCKET (respipe [1]);
674	}
675
676	X_THREAD_PROC (aio_proc);
677
678	static void start_thread (void)
679	{
680	worker *wrk = calloc (1, sizeof (worker));
681
682	if (!wrk)
683	croak ("unable to allocate worker thread data");
684
685	X_LOCK (wrklock);
686
687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688	{
689	wrk->prev = &wrk_first;
690	wrk->next = wrk_first.next;
691	wrk_first.next->prev = wrk;
692	wrk_first.next = wrk;
693	++started;
694	}
695	else
696	free (wrk);
697
698	X_UNLOCK (wrklock);
699	}
700
701	static void maybe_start_thread ()
702	{
703	if (get_nthreads () >= wanted)
704	return;
705
706	/* todo: maybe use idle here, but might be less exact */
707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708	return;
709
710	start_thread ();
711	}
712
713	static void req_send (aio_req req)
714	{
715	block_sig ();
716
717	++nreqs;
718
719	X_LOCK (reqlock);
720	++nready;
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	unblock_sig ();
726
727	maybe_start_thread ();
728	}
729
730	static void end_thread (void)
731	{
732	aio_req req;
733
734	Newz (0, req, 1, aio_cb);
735
736	req->type = REQ_QUIT;
737	req->pri = PRI_MAX + PRI_BIAS;
738
739	X_LOCK (reqlock);
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	X_LOCK (wrklock);
745	--started;
746	X_UNLOCK (wrklock);
747	}
748
749	static void set_max_idle (int nthreads)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752	max_idle = nthreads <= 0 ? 1 : nthreads;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754	}
755
756	static void min_parallel (int nthreads)
757	{
758	if (wanted < nthreads)
759	wanted = nthreads;
760	}
761
762	static void max_parallel (int nthreads)
763	{
764	if (wanted > nthreads)
765	wanted = nthreads;
766
767	while (started > wanted)
768	end_thread ();
769	}
770
771	static void poll_wait ()
772	{
773	fd_set rfd;
774
775	while (nreqs)	706	while (eio_nreqs ())
776	{	707	{
777	int size;	708	int size;
778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	709
		710	X_LOCK (reslock);
779	size = res_queue.size;	711	size = res_queue.size;
780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	712	X_UNLOCK (reslock);
781		713
782	if (size)	714	if (size)
783	return;	715	return;
784		716
785	maybe_start_thread ();	717	etp_maybe_start_thread ();
786		718
787	FD_ZERO (&rfd);	719	s_epipe_wait (&respipe);
788	FD_SET (respipe [0], &rfd);
789
790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791	}	720	}
792	}	721	}
793		722
794	static int poll_cb ()	723	static int
		724	poll_cb (void)
795	{	725	{
796	dSP;
797	int count = 0;
798	int maxreqs = max_poll_reqs;
799	int do_croak = 0;
800	struct timeval tv_start, tv_now;
801	aio_req req;
802
803	if (max_poll_time)
804	gettimeofday (&tv_start, 0);
805
806	block_sig ();
807
808	for (;;)	726	for (;;)
809	{	727	{
810	for (;;)	728	int res = eio_poll ();
		729
		730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		753	# define munmap(addr,length) EIO_ENOSYS ()
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int ecb_cold
		768	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		769	{
		770	int old_errno = errno;
		771	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		772	errno = old_errno;
		773
		774	mg->mg_obj = 0; /* just in case */
		775
		776	SvREADONLY_off (sv);
		777
		778	if (SvPVX (sv) != mg->mg_ptr)
		779	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		780
		781	SvCUR_set (sv, 0);
		782	SvPVX (sv) = 0;
		783	SvOK_off (sv);
		784
		785	return 0;
		786	}
		787
		788	static MGVTBL mmap_vtbl = {
		789	0, 0, 0, 0, mmap_free
		790	};
		791
		792	/*****************************************************************************/
		793
		794	static SV *
		795	get_cb (SV *cb_sv)
		796	{
		797	SvGETMAGIC (cb_sv);
		798	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		799	}
		800
		801	static aio_req ecb_noinline
		802	dreq (SV *callback)
		803	{
		804	SV *cb_cv;
		805	aio_req req;
		806	int req_pri = next_pri;
		807	next_pri = EIO_PRI_DEFAULT;
		808
		809	cb_cv = get_cb (callback);
		810
		811	req = calloc (sizeof (*req), 1);
		812	if (!req)
		813	croak ("out of memory during eio_req allocation");
		814
		815	req->callback = SvREFCNT_inc (cb_cv);
		816	req->pri = req_pri;
		817
		818	return req;
		819	}
		820
		821	#define dREQ \
		822	aio_req req = dreq (callback); \
		823
		824	#define REQ_SEND \
		825	PUTBACK; \
		826	req_submit (req); \
		827	SPAGAIN; \
		828	\
		829	if (GIMME_V != G_VOID) \
		830	XPUSHs (req_sv (req, aio_req_stash));
		831
		832	ecb_inline void
		833	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		834	{
		835	if (expect_false (SvROK (path)))
		836	{
		837	SV *rv = SvRV (path);
		838	SV *wdob;
		839
		840	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
811	{	841	{
812	maybe_start_thread ();	842	path = AvARRAY (rv)[1];
		843	wdob = AvARRAY (rv)[0];
813		844
814	X_LOCK (reslock);	845	if (SvOK (wdob))
815	req = reqq_shift (&res_queue);
816
817	if (req)
818	{	846	{
819	--npending;	847	*wd = SvAIO_WD (wdob);
820		848	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
821	if (!res_queue.size)
822	{
823	/* read any signals sent by the worker threads */
824	char buf [4];
825	while (respipe_read (respipe [0], buf, 4) == 4)
826	;
827	}
828	}
829
830	X_UNLOCK (reslock);
831
832	if (!req)
833	break;
834
835	--nreqs;
836
837	if (req->type == REQ_GROUP && req->size)
838	{
839	req->int1 = 1; /* mark request as delayed */
840	continue;
841	}	849	}
842	else	850	else
843	{	851	*wd = EIO_INVALID_WD;
844	if (!req_invoke (req))
845	{
846	req_destroy (req);
847	unblock_sig ();
848	croak (0);
849	}
850
851	count++;
852	}
853
854	req_destroy (req);
855
856	if (maxreqs && !--maxreqs)
857	break;
858
859	if (max_poll_time)
860	{
861	gettimeofday (&tv_now, 0);
862
863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864	break;
865	}
866	}	852	}
		853	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		854	{
		855	*wd = (aio_wd)(long)SvIVX (rv);
		856	*wdsv = SvREFCNT_inc_NN (rv);
		857	*ptr = ".";
		858	return; /* path set to "." */
		859	}
		860	else
		861	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		862	}
867		863
868	if (nreqs <= max_outstanding)	864	*pathsv = newSVsv (path);
		865	*ptr = SvPVbyte_nolen (*pathsv);
		866	}
		867
		868	static void ecb_noinline
		869	req_set_path1 (aio_req req, SV *path)
		870	{
		871	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		872	}
		873
		874	static void ecb_noinline
		875	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		876	{
		877	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		878
		879	switch (SvTYPE (rv))
		880	{
		881	case SVt_PVIO:
		882	case SVt_PVLV:
		883	case SVt_PVGV:
		884	req->type = type_fh;
		885	req->sv1 = newSVsv (fh_or_path);
		886	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
869	break;	887	break;
870		888
871	poll_wait ();	889	default:
872		890	req->type = type_path;
873	++maxreqs;	891	req_set_path1 (req, fh_or_path);
		892	break;
874	}	893	}
875
876	unblock_sig ();
877	return count;
878	}	894	}
879		895
880	/*****************************************************************************/	896	XS(boot_IO__AIO) ecb_cold;
881	/* work around various missing functions */
882		897
883	#if !HAVE_PREADWRITE
884	# define pread aio_pread
885	# define pwrite aio_pwrite
886
887	/*
888	* make our pread/pwrite safe against themselves, but not against
889	* normal read/write by using a mutex. slows down execution a lot,
890	* but that's your problem, not mine.
891	*/
892	static mutex_t preadwritelock = X_MUTEX_INIT;
893
894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895	{
896	ssize_t res;
897	off_t ooffset;
898
899	X_LOCK (preadwritelock);
900	ooffset = lseek (fd, 0, SEEK_CUR);
901	lseek (fd, offset, SEEK_SET);
902	res = read (fd, buf, count);
903	lseek (fd, ooffset, SEEK_SET);
904	X_UNLOCK (preadwritelock);
905
906	return res;
907	}
908
909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
910	{
911	ssize_t res;
912	off_t ooffset;
913
914	X_LOCK (preadwritelock);
915	ooffset = lseek (fd, 0, SEEK_CUR);
916	lseek (fd, offset, SEEK_SET);
917	res = write (fd, buf, count);
918	lseek (fd, offset, SEEK_SET);
919	X_UNLOCK (preadwritelock);
920
921	return res;
922	}
923	#endif
924
925	#ifndef HAVE_FUTIMES
926
927	# define utimes(path,times) aio_utimes (path, times)
928	# define futimes(fd,times) aio_futimes (fd, times)
929
930	int aio_utimes (const char *filename, const struct timeval times[2])
931	{
932	if (times)
933	{
934	struct utimbuf buf;
935
936	buf.actime = times[0].tv_sec;
937	buf.modtime = times[1].tv_sec;
938
939	return utime (filename, &buf);
940	}
941	else
942	return utime (filename, 0);
943	}
944
945	int aio_futimes (int fd, const struct timeval tv[2])
946	{
947	errno = ENOSYS;
948	return -1;
949	}
950
951	#endif
952
953	#if !HAVE_FDATASYNC
954	# define fdatasync fsync
955	#endif
956
957	#if !HAVE_READAHEAD
958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
959
960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
961	{
962	size_t todo = count;
963	dBUF;
964
965	while (todo > 0)
966	{
967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968
969	pread (fd, aio_buf, len, offset);
970	offset += len;
971	todo -= len;
972	}
973
974	errno = 0;
975	return count;
976	}
977
978	#endif
979
980	#if !HAVE_READDIR_R
981	# define readdir_r aio_readdir_r
982
983	static mutex_t readdirlock = X_MUTEX_INIT;
984
985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
986	{
987	X_DIRENT *e;
988	int errorno;
989
990	X_LOCK (readdirlock);
991
992	e = readdir (dirp);
993	errorno = errno;
994
995	if (e)
996	{
997	*res = ent;
998	strcpy (ent->d_name, e->d_name);
999	}
1000	else
1001	*res = 0;
1002
1003	X_UNLOCK (readdirlock);
1004
1005	errno = errorno;
1006	return e ? 0 : -1;
1007	}
1008	#endif
1009
1010	/* sendfile always needs emulation */
1011	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1012	{
1013	ssize_t res;
1014
1015	if (!count)
1016	return 0;
1017
1018	#if HAVE_SENDFILE
1019	# if __linux
1020	res = sendfile (ofd, ifd, &offset, count);
1021
1022	# elif __freebsd
1023	/*
1024	* Of course, the freebsd sendfile is a dire hack with no thoughts
1025	* wasted on making it similar to other I/O functions.
1026	*/
1027	{
1028	off_t sbytes;
1029	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030
1031	if (res < 0 && sbytes)
1032	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1033	res = sbytes;
1034	}
1035
1036	# elif __hpux
1037	res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039	# elif __solaris
1040	{
1041	struct sendfilevec vec;
1042	size_t sbytes;
1043
1044	vec.sfv_fd = ifd;
1045	vec.sfv_flag = 0;
1046	vec.sfv_off = offset;
1047	vec.sfv_len = count;
1048
1049	res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051	if (res < 0 && sbytes)
1052	res = sbytes;
1053	}
1054
1055	# endif
1056	#else
1057	res = -1;
1058	errno = ENOSYS;
1059	#endif
1060
1061	if (res < 0
1062	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1063	#if __solaris
1064	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1065	#endif
1066	)
1067	)
1068	{
1069	/* emulate sendfile. this is a major pain in the ass */
1070	dBUF;
1071
1072	res = 0;
1073
1074	while (count)
1075	{
1076	ssize_t cnt;
1077
1078	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1079
1080	if (cnt <= 0)
1081	{
1082	if (cnt && !res) res = -1;
1083	break;
1084	}
1085
1086	cnt = write (ofd, aio_buf, cnt);
1087
1088	if (cnt <= 0)
1089	{
1090	if (cnt && !res) res = -1;
1091	break;
1092	}
1093
1094	offset += cnt;
1095	res += cnt;
1096	count -= cnt;
1097	}
1098	}
1099
1100	return res;
1101	}
1102
1103	/* read a full directory */
1104	static void scandir_ (aio_req req, worker *self)
1105	{
1106	DIR *dirp;
1107	union
1108	{
1109	X_DIRENT d;
1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111	} *u;
1112	X_DIRENT *entp;
1113	char *name, *names;
1114	int memlen = 4096;
1115	int memofs = 0;
1116	int res = 0;
1117
1118	X_LOCK (wrklock);
1119	self->dirp = dirp = opendir (req->ptr1);
1120	self->dbuf = u = malloc (sizeof (*u));
1121	req->flags |= FLAG_PTR2_FREE;
1122	req->ptr2 = names = malloc (memlen);
1123	X_UNLOCK (wrklock);
1124
1125	if (dirp && u && names)
1126	for (;;)
1127	{
1128	errno = 0;
1129	readdir_r (dirp, &u->d, &entp);
1130
1131	if (!entp)
1132	break;
1133
1134	name = entp->d_name;
1135
1136	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137	{
1138	int len = strlen (name) + 1;
1139
1140	res++;
1141
1142	while (memofs + len > memlen)
1143	{
1144	memlen *= 2;
1145	X_LOCK (wrklock);
1146	req->ptr2 = names = realloc (names, memlen);
1147	X_UNLOCK (wrklock);
1148
1149	if (!names)
1150	break;
1151	}
1152
1153	memcpy (names + memofs, name, len);
1154	memofs += len;
1155	}
1156	}
1157
1158	if (errno)
1159	res = -1;
1160
1161	req->result = res;
1162	}
1163
1164	/*****************************************************************************/
1165
1166	X_THREAD_PROC (aio_proc)
1167	{
1168	{//D
1169	aio_req req;
1170	struct timespec ts;
1171	worker *self = (worker *)thr_arg;
1172
1173	/* try to distribute timeouts somewhat randomly */
1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176	for (;;)
1177	{
1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180	X_LOCK (reqlock);
1181
1182	for (;;)
1183	{
1184	self->req = req = reqq_shift (&req_queue);
1185
1186	if (req)
1187	break;
1188
1189	++idle;
1190
1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192	== ETIMEDOUT)
1193	{
1194	if (idle > max_idle)
1195	{
1196	--idle;
1197	X_UNLOCK (reqlock);
1198	X_LOCK (wrklock);
1199	--started;
1200	X_UNLOCK (wrklock);
1201	goto quit;
1202	}
1203
1204	/* we are allowed to idle, so do so without any timeout */
1205	X_COND_WAIT (reqwait, reqlock);
1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207	}
1208
1209	--idle;
1210	}
1211
1212	--nready;
1213
1214	X_UNLOCK (reqlock);
1215
1216	errno = 0; /* strictly unnecessary */
1217
1218	if (!(req->flags & FLAG_CANCELLED))
1219	switch (req->type)
1220	{
1221	case REQ_READ: req->result = req->offs >= 0
1222	? pread (req->int1, req->ptr1, req->size, req->offs)
1223	: read (req->int1, req->ptr1, req->size); break;
1224	case REQ_WRITE: req->result = req->offs >= 0
1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226	: write (req->int1, req->ptr1, req->size); break;
1227
1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243	case REQ_CLOSE: req->result = close (req->int1); break;
1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
1255	case REQ_READDIR: scandir_ (req, self); break;
1256
1257	case REQ_BUSY:
1258	#ifdef _WIN32
1259	Sleep (req->nv1 * 1000.);
1260	#else
1261	{
1262	struct timeval tv;
1263
1264	tv.tv_sec = req->nv1;
1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267	req->result = select (0, 0, 0, 0, &tv);
1268	}
1269	#endif
1270	break;
1271
1272	case REQ_UTIME:
1273	case REQ_FUTIME:
1274	{
1275	struct timeval tv[2];
1276	struct timeval *times;
1277
1278	if (req->nv1 != -1. || req->nv2 != -1.)
1279	{
1280	tv[0].tv_sec = req->nv1;
1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282	tv[1].tv_sec = req->nv2;
1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285	times = tv;
1286	}
1287	else
1288	times = 0;
1289
1290
1291	req->result = req->type == REQ_FUTIME
1292	? futimes (req->int1, times)
1293	: utimes (req->ptr1, times);
1294	}
1295
1296	case REQ_GROUP:
1297	case REQ_NOP:
1298	break;
1299
1300	case REQ_QUIT:
1301	goto quit;
1302
1303	default:
1304	req->result = -1;
1305	break;
1306	}
1307
1308	req->errorno = errno;
1309
1310	X_LOCK (reslock);
1311
1312	++npending;
1313
1314	if (!reqq_push (&res_queue, req))
1315	{
1316	/* write a dummy byte to the pipe so fh becomes ready */
1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319	/* optionally signal the main thread asynchronously */
1320	if (main_sig)
1321	pthread_kill (main_tid, main_sig);
1322	}
1323
1324	self->req = 0;
1325	worker_clear (self);
1326
1327	X_UNLOCK (reslock);
1328	}
1329
1330	quit:
1331	X_LOCK (wrklock);
1332	worker_free (self);
1333	X_UNLOCK (wrklock);
1334
1335	return 0;
1336	}//D
1337	}
1338
1339	/*****************************************************************************/
1340
1341	static void atfork_prepare (void)
1342	{
1343	X_LOCK (wrklock);
1344	X_LOCK (reqlock);
1345	X_LOCK (reslock);
1346	#if !HAVE_PREADWRITE
1347	X_LOCK (preadwritelock);
1348	#endif
1349	#if !HAVE_READDIR_R
1350	X_LOCK (readdirlock);
1351	#endif
1352	}
1353
1354	static void atfork_parent (void)
1355	{
1356	#if !HAVE_READDIR_R
1357	X_UNLOCK (readdirlock);
1358	#endif
1359	#if !HAVE_PREADWRITE
1360	X_UNLOCK (preadwritelock);
1361	#endif
1362	X_UNLOCK (reslock);
1363	X_UNLOCK (reqlock);
1364	X_UNLOCK (wrklock);
1365	}
1366
1367	static void atfork_child (void)
1368	{
1369	aio_req prv;
1370
1371	while (prv = reqq_shift (&req_queue))
1372	req_destroy (prv);
1373
1374	while (prv = reqq_shift (&res_queue))
1375	req_destroy (prv);
1376
1377	while (wrk_first.next != &wrk_first)
1378	{
1379	worker *wrk = wrk_first.next;
1380
1381	if (wrk->req)
1382	req_destroy (wrk->req);
1383
1384	worker_clear (wrk);
1385	worker_free (wrk);
1386	}
1387
1388	started = 0;
1389	idle = 0;
1390	nreqs = 0;
1391	nready = 0;
1392	npending = 0;
1393
1394	create_respipe ();
1395
1396	atfork_parent ();
1397	}
1398
1399	#define dREQ \
1400	aio_req req; \
1401	int req_pri = next_pri; \
1402	next_pri = DEFAULT_PRI + PRI_BIAS; \
1403	\
1404	if (SvOK (callback) && !SvROK (callback)) \
1405	croak ("callback must be undef or of reference type"); \
1406	\
1407	Newz (0, req, 1, aio_cb); \
1408	if (!req) \
1409	croak ("out of memory during aio_req allocation"); \
1410	\
1411	req->callback = newSVsv (callback); \
1412	req->pri = req_pri
1413
1414	#define REQ_SEND \
1415	req_send (req); \
1416	\
1417	if (GIMME_V != G_VOID) \
1418	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1419
1420	MODULE = IO::AIO PACKAGE = IO::AIO	898	MODULE = IO::AIO PACKAGE = IO::AIO
1421		899
1422	PROTOTYPES: ENABLE	900	PROTOTYPES: ENABLE
1423		901
1424	BOOT:	902	BOOT:
1425	{	903	{
		904	static const struct {
		905	const char *name;
		906	IV iv;
		907	} *civ, const_iv[] = {
		908	# define const_niv(name, value) { # name, (IV) value },
		909	# define const_iv(name) { # name, (IV) name },
		910	# define const_eio(name) { # name, (IV) EIO_ ## name },
		911
		912	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		913
		914	const_iv (ENOSYS)
		915	const_iv (EXDEV)
		916	const_iv (EBADR)
		917
		918	const_iv (O_RDONLY)
		919	const_iv (O_WRONLY)
		920	const_iv (O_RDWR)
		921	const_iv (O_CREAT)
		922	const_iv (O_TRUNC)
		923	const_iv (O_EXCL)
		924	const_iv (O_APPEND)
		925
		926	const_iv (O_ASYNC)
		927	const_iv (O_DIRECT)
		928	const_iv (O_NOATIME)
		929
		930	const_iv (O_CLOEXEC)
		931	const_iv (O_NOCTTY)
		932	const_iv (O_NOFOLLOW)
		933	const_iv (O_NONBLOCK)
		934	const_iv (O_EXEC)
		935	const_iv (O_SEARCH)
		936	const_iv (O_DIRECTORY)
		937	const_iv (O_DSYNC)
		938	const_iv (O_RSYNC)
		939	const_iv (O_SYNC)
		940	const_iv (O_TTY_INIT)
		941
		942	const_iv (S_IFIFO)
		943	const_iv (S_IFCHR)
		944	const_iv (S_IFBLK)
		945	const_iv (S_IFLNK)
		946	const_iv (S_IFREG)
		947	const_iv (S_IFDIR)
		948	const_iv (S_IFWHT)
		949	const_iv (S_IFSOCK)
		950	const_iv (S_IFMT)
		951
		952	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		953	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		954	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		955	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		956	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		957	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		958
		959	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		960	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		961	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		962	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		963	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		964
		965	const_iv (ST_RDONLY)
		966	const_iv (ST_NOSUID)
		967	const_iv (ST_NODEV)
		968	const_iv (ST_NOEXEC)
		969	const_iv (ST_SYNCHRONOUS)
		970	const_iv (ST_MANDLOCK)
		971	const_iv (ST_WRITE)
		972	const_iv (ST_APPEND)
		973	const_iv (ST_IMMUTABLE)
		974	const_iv (ST_NOATIME)
		975	const_iv (ST_NODIRATIME)
		976	const_iv (ST_RELATIME)
		977
		978	const_iv (PROT_NONE)
		979	const_iv (PROT_EXEC)
		980	const_iv (PROT_READ)
		981	const_iv (PROT_WRITE)
		982
		983	/*const_iv (MAP_FIXED)*/
		984	const_iv (MAP_PRIVATE)
		985	const_iv (MAP_SHARED)
		986	const_iv (MAP_ANONYMOUS)
		987
		988	/* linuxish */
		989	const_iv (MAP_HUGETLB)
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
		994
		995	const_iv (FIEMAP_FLAG_SYNC)
		996	const_iv (FIEMAP_FLAG_XATTR)
		997	const_iv (FIEMAP_FLAGS_COMPAT)
		998	const_iv (FIEMAP_EXTENT_LAST)
		999	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1000	const_iv (FIEMAP_EXTENT_DELALLOC)
		1001	const_iv (FIEMAP_EXTENT_ENCODED)
		1002	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1003	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1004	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1005	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1006	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1007	const_iv (FIEMAP_EXTENT_MERGED)
		1008	const_iv (FIEMAP_EXTENT_SHARED)
		1009
		1010	const_iv (SPLICE_F_MOVE)
		1011	const_iv (SPLICE_F_NONBLOCK)
		1012	const_iv (SPLICE_F_MORE)
		1013	const_iv (SPLICE_F_GIFT)
		1014
		1015	const_iv (SEEK_DATA)
		1016	const_iv (SEEK_HOLE)
		1017
		1018	/* libeio constants */
		1019	const_eio (SEEK_SET)
		1020	const_eio (SEEK_CUR)
		1021	const_eio (SEEK_END)
		1022
		1023	const_eio (MCL_FUTURE)
		1024	const_eio (MCL_CURRENT)
		1025
		1026	const_eio (MS_ASYNC)
		1027	const_eio (MS_INVALIDATE)
		1028	const_eio (MS_SYNC)
		1029
		1030	const_eio (MT_MODIFY)
		1031
		1032	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1033	const_eio (SYNC_FILE_RANGE_WRITE)
		1034	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1035
		1036	const_eio (FALLOC_FL_KEEP_SIZE)
		1037	const_eio (FALLOC_FL_PUNCH_HOLE)
		1038	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1039	const_eio (FALLOC_FL_ZERO_RANGE)
		1040
		1041	const_eio (READDIR_DENTS)
		1042	const_eio (READDIR_DIRS_FIRST)
		1043	const_eio (READDIR_STAT_ORDER)
		1044	const_eio (READDIR_FOUND_UNKNOWN)
		1045
		1046	const_eio (DT_UNKNOWN)
		1047	const_eio (DT_FIFO)
		1048	const_eio (DT_CHR)
		1049	const_eio (DT_DIR)
		1050	const_eio (DT_BLK)
		1051	const_eio (DT_REG)
		1052	const_eio (DT_LNK)
		1053	const_eio (DT_SOCK)
		1054	const_eio (DT_WHT)
		1055	};
		1056
1426	HV *stash = gv_stashpv ("IO::AIO", 1);	1057	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1058	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1059	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1060	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1427		1061
1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1062	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1063	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1433	#ifdef _WIN32
1434	X_MUTEX_CHECK (wrklock);
1435	X_MUTEX_CHECK (reslock);
1436	X_MUTEX_CHECK (reqlock);
1437	X_MUTEX_CHECK (reqwait);
1438	X_MUTEX_CHECK (preadwritelock);
1439	X_MUTEX_CHECK (readdirlock);
1440		1064
1441	X_COND_CHECK (reqwait);	1065	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1442	#else
1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445	#endif
1446		1066
1447	create_respipe ();	1067	reinit ();
1448
1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1450	}	1068	}
1451		1069
1452	void	1070	void
		1071	reinit ()
		1072	PROTOTYPE:
		1073
		1074	void
1453	max_poll_reqs (int nreqs)	1075	max_poll_reqs (unsigned int nreqs)
1454	PROTOTYPE: $	1076	PROTOTYPE: $
1455	CODE:	1077	CODE:
1456	max_poll_reqs = nreqs;	1078	eio_set_max_poll_reqs (nreqs);
1457		1079
1458	void	1080	void
1459	max_poll_time (double nseconds)	1081	max_poll_time (double nseconds)
1460	PROTOTYPE: $	1082	PROTOTYPE: $
1461	CODE:	1083	CODE:
1462	max_poll_time = nseconds * AIO_TICKS;	1084	eio_set_max_poll_time (nseconds);
1463		1085
1464	void	1086	void
1465	min_parallel (int nthreads)	1087	min_parallel (unsigned int nthreads)
1466	PROTOTYPE: $
1467
1468	void
1469	max_parallel (int nthreads)
1470	PROTOTYPE: $
1471
1472	void
1473	max_idle (int nthreads)
1474	PROTOTYPE: $	1088	PROTOTYPE: $
1475	CODE:	1089	CODE:
1476	set_max_idle (nthreads);	1090	eio_set_min_parallel (nthreads);
1477		1091
1478	int	1092	void
1479	max_outstanding (int maxreqs)	1093	max_parallel (unsigned int nthreads)
1480	PROTOTYPE: $	1094	PROTOTYPE: $
1481	CODE:	1095	CODE:
1482	RETVAL = max_outstanding;	1096	eio_set_max_parallel (nthreads);
		1097
		1098	void
		1099	max_idle (unsigned int nthreads)
		1100	PROTOTYPE: $
		1101	CODE:
		1102	eio_set_max_idle (nthreads);
		1103
		1104	void
		1105	idle_timeout (unsigned int seconds)
		1106	PROTOTYPE: $
		1107	CODE:
		1108	eio_set_idle_timeout (seconds);
		1109
		1110	void
		1111	max_outstanding (unsigned int maxreqs)
		1112	PROTOTYPE: $
		1113	CODE:
1483	max_outstanding = maxreqs;	1114	max_outstanding = maxreqs;
1484	OUTPUT:
1485	RETVAL
1486		1115
1487	void	1116	void
1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1117	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1489	PROTOTYPE: $$$;$
1490	PPCODE:	1118	PPCODE:
1491	{	1119	{
1492	dREQ;	1120	dREQ;
1493		1121
		1122	req->type = EIO_WD_OPEN;
		1123	req_set_path1 (req, pathname);
		1124
		1125	REQ_SEND;
		1126	}
		1127
		1128	void
		1129	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1130	PPCODE:
		1131	{
		1132	dREQ;
		1133
1494	req->type = REQ_OPEN;	1134	req->type = EIO_OPEN;
1495	req->sv1 = newSVsv (pathname);	1135	req_set_path1 (req, pathname);
1496	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->int1 = flags;	1136	req->int1 = flags;
1498	req->mode = mode;	1137	req->int2 = mode;
1499		1138
1500	REQ_SEND;	1139	REQ_SEND;
1501	}	1140	}
1502		1141
1503	void	1142	void
1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1143	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1505	PROTOTYPE: $;$
1506	ALIAS:	1144	ALIAS:
1507	aio_close = REQ_CLOSE
1508	aio_fsync = REQ_FSYNC	1145	aio_fsync = EIO_FSYNC
1509	aio_fdatasync = REQ_FDATASYNC	1146	aio_fdatasync = EIO_FDATASYNC
		1147	aio_syncfs = EIO_SYNCFS
1510	PPCODE:	1148	PPCODE:
1511	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1512	dREQ;	1151	dREQ;
1513		1152
1514	req->type = ix;	1153	req->type = ix;
1515	req->sv1 = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1517		1156
1518	REQ_SEND (req);	1157	REQ_SEND;
1519	}	1158	}
1520		1159
1521	void	1160	void
		1161	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1162	PPCODE:
		1163	{
		1164	int fd = s_fileno_croak (fh, 0);
		1165	dREQ;
		1166
		1167	req->type = EIO_SYNC_FILE_RANGE;
		1168	req->sv1 = newSVsv (fh);
		1169	req->int1 = fd;
		1170	req->offs = offset;
		1171	req->size = nbytes;
		1172	req->int2 = flags;
		1173
		1174	REQ_SEND;
		1175	}
		1176
		1177	void
		1178	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1179	PPCODE:
		1180	{
		1181	int fd = s_fileno_croak (fh, 0);
		1182	dREQ;
		1183
		1184	req->type = EIO_FALLOCATE;
		1185	req->sv1 = newSVsv (fh);
		1186	req->int1 = fd;
		1187	req->int2 = mode;
		1188	req->offs = offset;
		1189	req->size = len;
		1190
		1191	REQ_SEND;
		1192	}
		1193
		1194	void
		1195	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1196	PPCODE:
		1197	{
		1198	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1199	int fd = s_fileno_croak (fh, 0);
		1200	dREQ;
		1201
		1202	if (expect_false (close_fd < 0))
		1203	{
		1204	int pipefd [2];
		1205
		1206	if (
		1207	#ifdef _WIN32
		1208	_pipe (pipefd, 1, _O_BINARY) < 0
		1209	#else
		1210	pipe (pipefd) < 0
		1211	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1212	#endif
		1213	|| close (pipefd [1]) < 0
		1214	)
		1215	abort (); /*D*/
		1216
		1217	close_fd = pipefd [0];
		1218	}
		1219
		1220	req->type = EIO_DUP2;
		1221	req->int1 = close_fd;
		1222	req->sv2 = newSVsv (fh);
		1223	req->int2 = fd;
		1224
		1225	REQ_SEND;
		1226	}
		1227
		1228	void
		1229	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1230	PPCODE:
		1231	{
		1232	int fd = s_fileno_croak (fh, 0);
		1233	dREQ;
		1234
		1235	req->type = EIO_SEEK;
		1236	req->sv1 = newSVsv (fh);
		1237	req->int1 = fd;
		1238	req->offs = SvVAL64 (offset);
		1239	req->int2 = whence;
		1240
		1241	REQ_SEND;
		1242	}
		1243
		1244	void
1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1245	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1523	ALIAS:	1246	ALIAS:
1524	aio_read = REQ_READ	1247	aio_read = EIO_READ
1525	aio_write = REQ_WRITE	1248	aio_write = EIO_WRITE
1526	PROTOTYPE: $$$$$;$
1527	PPCODE:	1249	PPCODE:
1528	{	1250	{
1529	STRLEN svlen;	1251	STRLEN svlen;
		1252	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530	char *svptr = SvPVbyte (data, svlen);	1253	char *svptr = SvPVbyte (data, svlen);
1531	UV len = SvUV (length);	1254	UV len = SvUV (length);
1532		1255
1533	SvUPGRADE (data, SVt_PV);
1534	SvPOK_on (data);
1535
1536	if (dataoffset < 0)	1256	if (dataoffset < 0)
1537	dataoffset += svlen;	1257	dataoffset += svlen;
1538		1258
1539	if (dataoffset < 0 || dataoffset > svlen)	1259	if (dataoffset < 0 || dataoffset > svlen)
1540	croak ("dataoffset outside of data scalar");	1260	croak ("dataoffset outside of data scalar");
1541		1261
1542	if (ix == REQ_WRITE)	1262	if (ix == EIO_WRITE)
1543	{	1263	{
1544	/* write: check length and adjust. */	1264	/* write: check length and adjust. */
1545	if (!SvOK (length) || len + dataoffset > svlen)	1265	if (!SvOK (length) || len + dataoffset > svlen)
1546	len = svlen - dataoffset;	1266	len = svlen - dataoffset;
1547	}	1267	}
1548	else	1268	else
1549	{	1269	{
1550	/* read: grow scalar as necessary */	1270	/* read: check type and grow scalar as necessary */
		1271	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1551	svptr = SvGROW (data, len + dataoffset + 1);	1272	svptr = sv_grow (data, len + dataoffset + 1);
		1273	else if (SvCUR (data) < len + dataoffset)
		1274	croak ("length + dataoffset outside of scalar, and cannot grow");
1552	}	1275	}
1553
1554	if (len < 0)
1555	croak ("length must not be negative");
1556		1276
1557	{	1277	{
1558	dREQ;	1278	dREQ;
1559		1279
1560	req->type = ix;	1280	req->type = ix;
1561	req->sv1 = newSVsv (fh);	1281	req->sv1 = newSVsv (fh);
1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1282	req->int1 = fd;
1563	: IoOFP (sv_2io (fh)));
1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1283	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565	req->size = len;	1284	req->size = len;
1566	req->sv2 = SvREFCNT_inc (data);	1285	req->sv2 = SvREFCNT_inc (data);
1567	req->ptr1 = (char *)svptr + dataoffset;	1286	req->ptr2 = (char *)svptr + dataoffset;
1568	req->stroffset = dataoffset;	1287	req->stroffset = dataoffset;
1569		1288
1570	if (!SvREADONLY (data))	1289	if (!SvREADONLY (data))
1571	{	1290	{
1572	SvREADONLY_on (data);	1291	SvREADONLY_on (data);
…		…
1576	REQ_SEND;	1295	REQ_SEND;
1577	}	1296	}
1578	}	1297	}
1579		1298
1580	void	1299	void
1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1300	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1582	PROTOTYPE: $$;$	1301	ALIAS:
		1302	aio_readlink = EIO_READLINK
		1303	aio_realpath = EIO_REALPATH
1583	PPCODE:	1304	PPCODE:
1584	{	1305	{
1585	SV *data;
1586	dREQ;	1306	dREQ;
1587		1307
1588	data = newSV (NAME_MAX);
1589	SvPOK_on (data);
1590
1591	req->type = REQ_READLINK;	1308	req->type = ix;
1592	req->sv1 = newSVsv (path);	1309	req_set_path1 (req, pathname);
1593	req->ptr2 = SvPVbyte_nolen (req->sv1);
1594	req->sv2 = data;
1595	req->ptr1 = SvPVbyte_nolen (data);
1596		1310
1597	REQ_SEND;	1311	REQ_SEND;
1598	}	1312	}
1599		1313
1600	void	1314	void
1601	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1315	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1602	PROTOTYPE: $$$$;$
1603	PPCODE:	1316	PPCODE:
1604	{	1317	{
		1318	int ifd = s_fileno_croak (in_fh , 0);
		1319	int ofd = s_fileno_croak (out_fh, 1);
1605	dREQ;	1320	dREQ;
1606		1321
1607	req->type = REQ_SENDFILE;	1322	req->type = EIO_SENDFILE;
1608	req->sv1 = newSVsv (out_fh);	1323	req->sv1 = newSVsv (out_fh);
1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1324	req->int1 = ofd;
1610	req->sv2 = newSVsv (in_fh);	1325	req->sv2 = newSVsv (in_fh);
1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1326	req->int2 = ifd;
1612	req->offs = SvVAL64 (in_offset);	1327	req->offs = in_offset;
1613	req->size = length;	1328	req->size = length;
1614		1329
1615	REQ_SEND;	1330	REQ_SEND;
1616	}	1331	}
1617		1332
1618	void	1333	void
1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1334	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1620	PROTOTYPE: $$$;$
1621	PPCODE:	1335	PPCODE:
1622	{	1336	{
		1337	int fd = s_fileno_croak (fh, 0);
1623	dREQ;	1338	dREQ;
1624		1339
1625	req->type = REQ_READAHEAD;	1340	req->type = EIO_READAHEAD;
1626	req->sv1 = newSVsv (fh);	1341	req->sv1 = newSVsv (fh);
1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1342	req->int1 = fd;
1628	req->offs = SvVAL64 (offset);	1343	req->offs = offset;
1629	req->size = length;	1344	req->size = length;
1630		1345
1631	REQ_SEND;	1346	REQ_SEND;
1632	}	1347	}
1633		1348
1634	void	1349	void
1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1350	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1636	ALIAS:	1351	ALIAS:
1637	aio_stat = REQ_STAT	1352	aio_stat = EIO_STAT
1638	aio_lstat = REQ_LSTAT	1353	aio_lstat = EIO_LSTAT
		1354	aio_statvfs = EIO_STATVFS
1639	PPCODE:	1355	PPCODE:
1640	{	1356	{
1641	dREQ;	1357	dREQ;
1642		1358
1643	req->ptr2 = malloc (sizeof (Stat_t));	1359	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1644	if (!req->ptr2)
1645	{
1646	req_destroy (req);
1647	croak ("out of memory during aio_stat statdata allocation");
1648	}
1649
1650	req->flags |= FLAG_PTR2_FREE;
1651	req->sv1 = newSVsv (fh_or_path);
1652
1653	if (SvPOK (fh_or_path))
1654	{
1655	req->type = ix;
1656	req->ptr1 = SvPVbyte_nolen (req->sv1);
1657	}
1658	else
1659	{
1660	req->type = REQ_FSTAT;
1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1662	}
1663		1360
1664	REQ_SEND;	1361	REQ_SEND;
1665	}	1362	}
1666		1363
		1364	UV
		1365	major (UV dev)
		1366	ALIAS:
		1367	minor = 1
		1368	CODE:
		1369	RETVAL = ix ? major (dev) : minor (dev);
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	UV
		1374	makedev (UV maj, UV min)
		1375	CODE:
		1376	RETVAL = makedev (maj, min);
		1377	OUTPUT:
		1378	RETVAL
		1379
1667	void	1380	void
1668	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1381	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1669	PPCODE:	1382	PPCODE:
1670	{	1383	{
1671	dREQ;	1384	dREQ;
1672		1385
1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1386	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1387	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675	req->sv1 = newSVsv (fh_or_path);	1388	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1676
1677	if (SvPOK (fh_or_path))
1678	{
1679	req->type = REQ_UTIME;
1680	req->ptr1 = SvPVbyte_nolen (req->sv1);
1681	}
1682	else
1683	{
1684	req->type = REQ_FUTIME;
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686	}
1687		1389
1688	REQ_SEND;	1390	REQ_SEND;
1689	}	1391	}
1690		1392
1691	void	1393	void
1692	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1394	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1693	PPCODE:	1395	PPCODE:
1694	{	1396	{
1695	dREQ;	1397	dREQ;
1696		1398
1697	req->sv1 = newSVsv (fh_or_path);
1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1399	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699		1400	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1700	if (SvPOK (fh_or_path))
1701	{
1702	req->type = REQ_TRUNCATE;
1703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1704	}
1705	else
1706	{
1707	req->type = REQ_FTRUNCATE;
1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	}
1710		1401
1711	REQ_SEND;	1402	REQ_SEND;
1712	}	1403	}
1713		1404
1714	void	1405	void
1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1406	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1716	PPCODE:	1407	PPCODE:
1717	{	1408	{
1718	dREQ;	1409	dREQ;
1719		1410
1720	req->mode = mode;	1411	req->int2 = mode;
1721	req->sv1 = newSVsv (fh_or_path);	1412	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1722
1723	if (SvPOK (fh_or_path))
1724	{
1725	req->type = REQ_CHMOD;
1726	req->ptr1 = SvPVbyte_nolen (req->sv1);
1727	}
1728	else
1729	{
1730	req->type = REQ_FCHMOD;
1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732	}
1733		1413
1734	REQ_SEND;	1414	REQ_SEND;
1735	}	1415	}
1736		1416
1737	void	1417	void
1738	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1418	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1739	PPCODE:	1419	PPCODE:
1740	{	1420	{
1741	dREQ;	1421	dREQ;
1742		1422
1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1423	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1424	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745	req->sv1 = newSVsv (fh_or_path);	1425	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1746
1747	if (SvPOK (fh_or_path))
1748	{
1749	req->type = REQ_CHOWN;
1750	req->ptr1 = SvPVbyte_nolen (req->sv1);
1751	}
1752	else
1753	{
1754	req->type = REQ_FCHOWN;
1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756	}
1757		1426
1758	REQ_SEND;	1427	REQ_SEND;
1759	}	1428	}
1760		1429
1761	void	1430	void
		1431	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1432	PPCODE:
		1433	{
		1434	dREQ;
		1435
		1436	req->type = EIO_READDIR;
		1437	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1438
		1439	if (flags & EIO_READDIR_DENTS)
		1440	req->int1 |= EIO_READDIR_CUSTOM2;
		1441
		1442	req_set_path1 (req, pathname);
		1443
		1444	REQ_SEND;
		1445	}
		1446
		1447	void
		1448	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->type = EIO_MKDIR;
		1454	req->int2 = mode;
		1455	req_set_path1 (req, pathname);
		1456
		1457	REQ_SEND;
		1458	}
		1459
		1460	void
1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1461	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1763	ALIAS:	1462	ALIAS:
1764	aio_unlink = REQ_UNLINK	1463	aio_unlink = EIO_UNLINK
1765	aio_rmdir = REQ_RMDIR	1464	aio_rmdir = EIO_RMDIR
1766	aio_readdir = REQ_READDIR	1465	aio_readdir = EIO_READDIR
1767	PPCODE:	1466	PPCODE:
1768	{	1467	{
1769	dREQ;	1468	dREQ;
1770		1469
1771	req->type = ix;	1470	req->type = ix;
1772	req->sv1 = newSVsv (pathname);	1471	req_set_path1 (req, pathname);
1773	req->ptr1 = SvPVbyte_nolen (req->sv1);
1774		1472
1775	REQ_SEND;	1473	REQ_SEND;
1776	}	1474	}
1777		1475
1778	void	1476	void
1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1477	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1478	ALIAS:
		1479	aio_link = EIO_LINK
		1480	aio_symlink = EIO_SYMLINK
		1481	aio_rename = EIO_RENAME
1780	PPCODE:	1482	PPCODE:
1781	{	1483	{
1782	dREQ;	1484	eio_wd wd2 = 0;
1783
1784	req->type = REQ_MKDIR;
1785	req->sv1 = newSVsv (pathname);
1786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1787	req->mode = mode;
1788
1789	REQ_SEND;
1790	}
1791
1792	void
1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794	ALIAS:
1795	aio_link = REQ_LINK
1796	aio_symlink = REQ_SYMLINK
1797	aio_rename = REQ_RENAME
1798	PPCODE:
1799	{
1800	dREQ;	1485	dREQ;
1801		1486
1802	req->type = ix;	1487	req->type = ix;
1803	req->sv2 = newSVsv (oldpath);	1488	req_set_path1 (req, oldpath);
1804	req->ptr2 = SvPVbyte_nolen (req->sv2);	1489	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1805	req->sv1 = newSVsv (newpath);	1490	req->int3 = (long)wd2;
1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1807		1491
1808	REQ_SEND;	1492	REQ_SEND;
1809	}	1493	}
1810		1494
1811	void	1495	void
1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1496	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1813	PPCODE:	1497	PPCODE:
1814	{	1498	{
1815	dREQ;	1499	dREQ;
1816		1500
1817	req->type = REQ_MKNOD;	1501	req->type = EIO_MKNOD;
1818	req->sv1 = newSVsv (pathname);
1819	req->ptr1 = SvPVbyte_nolen (req->sv1);
1820	req->mode = (mode_t)mode;	1502	req->int2 = (mode_t)mode;
1821	req->offs = dev;	1503	req->offs = dev;
		1504	req_set_path1 (req, pathname);
1822		1505
1823	REQ_SEND;	1506	REQ_SEND;
1824	}	1507	}
1825		1508
1826	void	1509	void
		1510	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback = &PL_sv_undef)
		1511	ALIAS:
		1512	aio_mtouch = EIO_MTOUCH
		1513	aio_msync = EIO_MSYNC
		1514	PPCODE:
		1515	{
		1516	STRLEN svlen;
		1517	char *svptr = SvPVbyte (data, svlen);
		1518	UV len = SvUV (length);
		1519
		1520	if (offset < 0)
		1521	offset += svlen;
		1522
		1523	if (offset < 0 || offset > svlen)
		1524	croak ("offset outside of scalar");
		1525
		1526	if (!SvOK (length) || len + offset > svlen)
		1527	len = svlen - offset;
		1528
		1529	{
		1530	dREQ;
		1531
		1532	req->type = ix;
		1533	req->sv2 = SvREFCNT_inc (data);
		1534	req->ptr2 = (char *)svptr + offset;
		1535	req->size = len;
		1536	req->int1 = flags;
		1537
		1538	REQ_SEND;
		1539	}
		1540	}
		1541
		1542	void
		1543	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1544	PPCODE:
		1545	{
		1546	STRLEN svlen;
		1547	char *svptr = SvPVbyte (data, svlen);
		1548	UV len = SvUV (length);
		1549
		1550	if (offset < 0)
		1551	offset += svlen;
		1552
		1553	if (offset < 0 || offset > svlen)
		1554	croak ("offset outside of scalar");
		1555
		1556	if (!SvOK (length) || len + offset > svlen)
		1557	len = svlen - offset;
		1558
		1559	{
		1560	dREQ;
		1561
		1562	req->type = EIO_MLOCK;
		1563	req->sv2 = SvREFCNT_inc (data);
		1564	req->ptr2 = (char *)svptr + offset;
		1565	req->size = len;
		1566
		1567	REQ_SEND;
		1568	}
		1569	}
		1570
		1571	void
		1572	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->type = EIO_MLOCKALL;
		1578	req->int1 = flags;
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	int fd = s_fileno_croak (fh, 0);
		1588	dREQ;
		1589
		1590	req->type = EIO_CUSTOM;
		1591	req->sv1 = newSVsv (fh);
		1592	req->int1 = fd;
		1593
		1594	req->feed = fiemap;
		1595	#if HAVE_FIEMAP
		1596	/* keep our fingers crossed that the next two types are 64 bit */
		1597	req->offs = start;
		1598	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1599	req->int2 = flags;
		1600	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1601	#endif
		1602
		1603	REQ_SEND;
		1604	}
		1605
		1606	void
1827	aio_busy (double delay, SV *callback=&PL_sv_undef)	1607	aio_busy (double delay, SV *callback = &PL_sv_undef)
1828	PPCODE:	1608	PPCODE:
1829	{	1609	{
1830	dREQ;	1610	dREQ;
1831		1611
1832	req->type = REQ_BUSY;	1612	req->type = EIO_BUSY;
1833	req->nv1 = delay < 0. ? 0. : delay;	1613	req->nv1 = delay < 0. ? 0. : delay;
1834		1614
1835	REQ_SEND;	1615	REQ_SEND;
1836	}	1616	}
1837		1617
1838	void	1618	void
1839	aio_group (SV *callback=&PL_sv_undef)	1619	aio_group (SV *callback = &PL_sv_undef)
1840	PROTOTYPE: ;$
1841	PPCODE:	1620	PPCODE:
1842	{	1621	{
1843	dREQ;	1622	dREQ;
1844		1623
1845	req->type = REQ_GROUP;	1624	req->type = EIO_GROUP;
1846		1625
		1626	PUTBACK;
1847	req_send (req);	1627	req_submit (req);
		1628	SPAGAIN;
		1629
1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1630	XPUSHs (req_sv (req, aio_grp_stash));
1849	}	1631	}
1850		1632
1851	void	1633	void
1852	aio_nop (SV *callback=&PL_sv_undef)	1634	aio_nop (SV *callback = &PL_sv_undef)
		1635	ALIAS:
		1636	aio_nop = EIO_NOP
		1637	aio_sync = EIO_SYNC
1853	PPCODE:	1638	PPCODE:
1854	{	1639	{
1855	dREQ;	1640	dREQ;
1856		1641
1857	req->type = REQ_NOP;	1642	req->type = ix;
1858		1643
1859	REQ_SEND;	1644	REQ_SEND;
1860	}	1645	}
1861		1646
1862	int	1647	int
1863	aioreq_pri (int pri = 0)	1648	aioreq_pri (int pri = NO_INIT)
1864	PROTOTYPE: ;$
1865	CODE:	1649	CODE:
1866	RETVAL = next_pri - PRI_BIAS;	1650	RETVAL = next_pri;
1867	if (items > 0)	1651	if (items > 0)
1868	{	1652	{
1869	if (pri < PRI_MIN) pri = PRI_MIN;	1653	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870	if (pri > PRI_MAX) pri = PRI_MAX;	1654	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871	next_pri = pri + PRI_BIAS;	1655	next_pri = pri;
1872	}	1656	}
1873	OUTPUT:	1657	OUTPUT:
1874	RETVAL	1658	RETVAL
1875		1659
1876	void	1660	void
1877	aioreq_nice (int nice = 0)	1661	aioreq_nice (int nice = 0)
1878	CODE:	1662	CODE:
1879	nice = next_pri - nice;	1663	nice = next_pri - nice;
1880	if (nice < PRI_MIN) nice = PRI_MIN;	1664	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881	if (nice > PRI_MAX) nice = PRI_MAX;	1665	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882	next_pri = nice + PRI_BIAS;	1666	next_pri = nice;
1883		1667
1884	void	1668	void
1885	flush ()	1669	flush ()
1886	PROTOTYPE:
1887	CODE:	1670	CODE:
1888	while (nreqs)	1671	while (eio_nreqs ())
1889	{	1672	{
1890	poll_wait ();	1673	poll_wait ();
1891	poll_cb ();	1674	poll_cb ();
1892	}	1675	}
1893		1676
1894	int	1677	int
1895	poll()	1678	poll ()
1896	PROTOTYPE:
1897	CODE:	1679	CODE:
1898	poll_wait ();	1680	poll_wait ();
1899	RETVAL = poll_cb ();	1681	RETVAL = poll_cb ();
1900	OUTPUT:	1682	OUTPUT:
1901	RETVAL	1683	RETVAL
1902		1684
1903	int	1685	int
1904	poll_fileno()	1686	poll_fileno ()
1905	PROTOTYPE:
1906	CODE:	1687	CODE:
1907	RETVAL = respipe [0];	1688	RETVAL = s_epipe_fd (&respipe);
1908	OUTPUT:	1689	OUTPUT:
1909	RETVAL	1690	RETVAL
1910		1691
1911	int	1692	int
1912	poll_cb(...)	1693	poll_cb (...)
1913	PROTOTYPE:	1694	PROTOTYPE:
1914	CODE:	1695	CODE:
1915	RETVAL = poll_cb ();	1696	RETVAL = poll_cb ();
1916	OUTPUT:	1697	OUTPUT:
1917	RETVAL	1698	RETVAL
1918		1699
1919	void	1700	void
1920	poll_wait()	1701	poll_wait ()
1921	PROTOTYPE:
1922	CODE:	1702	CODE:
1923	poll_wait ();	1703	poll_wait ();
1924		1704
1925	void
1926	setsig (int signum = SIGIO)
1927	PROTOTYPE: ;$
1928	CODE:
1929	{
1930	if (block_sig_level)
1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933	X_LOCK (reslock);
1934	main_tid = pthread_self ();
1935	main_sig = signum;
1936	X_UNLOCK (reslock);
1937
1938	if (main_sig && npending)
1939	pthread_kill (main_tid, main_sig);
1940	}
1941
1942	void
1943	aio_block (SV *cb)
1944	PROTOTYPE: &
1945	PPCODE:
1946	{
1947	int count;
1948
1949	block_sig ();
1950	PUSHMARK (SP);
1951	PUTBACK;
1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953	SPAGAIN;
1954	unblock_sig ();
1955
1956	if (SvTRUE (ERRSV))
1957	croak (0);
1958
1959	XSRETURN (count);
1960	}
1961
1962	int	1705	int
1963	nreqs()	1706	nreqs ()
1964	PROTOTYPE:
1965	CODE:	1707	CODE:
1966	RETVAL = nreqs;	1708	RETVAL = eio_nreqs ();
1967	OUTPUT:	1709	OUTPUT:
1968	RETVAL	1710	RETVAL
1969		1711
1970	int	1712	int
1971	nready()	1713	nready ()
1972	PROTOTYPE:
1973	CODE:	1714	CODE:
1974	RETVAL = get_nready ();	1715	RETVAL = eio_nready ();
1975	OUTPUT:	1716	OUTPUT:
1976	RETVAL	1717	RETVAL
1977		1718
1978	int	1719	int
1979	npending()	1720	npending ()
1980	PROTOTYPE:
1981	CODE:	1721	CODE:
1982	RETVAL = get_npending ();	1722	RETVAL = eio_npending ();
1983	OUTPUT:	1723	OUTPUT:
1984	RETVAL	1724	RETVAL
1985		1725
1986	int	1726	int
1987	nthreads()	1727	nthreads ()
1988	PROTOTYPE:
1989	CODE:	1728	CODE:
1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1729	RETVAL = eio_nthreads ();
1991	RETVAL = started;
1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993	OUTPUT:	1730	OUTPUT:
1994	RETVAL	1731	RETVAL
1995		1732
		1733	int
		1734	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1735	CODE:
		1736	RETVAL = posix_fadvise (fh, offset, length, advice);
		1737	OUTPUT:
		1738	RETVAL
		1739
		1740	IV
		1741	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1742	CODE:
		1743	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1744	OUTPUT:
		1745	RETVAL
		1746
		1747	void
		1748	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1749	PPCODE:
		1750	sv_unmagic (scalar, MMAP_MAGIC);
		1751	{
		1752	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1753	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1754	if (addr == (void *)-1)
		1755	XSRETURN_NO;
		1756
		1757	sv_force_normal (scalar);
		1758
		1759	/* we store the length in mg_obj, as namlen is I32 :/ */
		1760	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1761	->mg_obj = (SV *)length;
		1762
		1763	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1764
		1765	if (!(prot & PROT_WRITE))
		1766	SvREADONLY_on (scalar);
		1767
		1768	if (SvLEN (scalar))
		1769	Safefree (SvPVX (scalar));
		1770
		1771	SvPVX (scalar) = (char *)addr;
		1772	SvCUR_set (scalar, length);
		1773	SvLEN_set (scalar, 0);
		1774	SvPOK_only (scalar);
		1775
		1776	XSRETURN_YES;
		1777	}
		1778
		1779	void
		1780	munmap (SV *scalar)
		1781	CODE:
		1782	sv_unmagic (scalar, MMAP_MAGIC);
		1783
		1784	int
		1785	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1786	ALIAS:
		1787	mprotect = 1
		1788	CODE:
		1789	{
		1790	STRLEN svlen;
		1791	void *addr = SvPVbyte (scalar, svlen);
		1792	STRLEN len = SvUV (length);
		1793
		1794	if (offset < 0)
		1795	offset += svlen;
		1796
		1797	if (offset < 0 || offset > svlen)
		1798	croak ("offset outside of scalar");
		1799
		1800	if (!SvOK (length) || len + offset > svlen)
		1801	len = svlen - offset;
		1802
		1803	addr = (void *)(((intptr_t)addr) + offset);
		1804	eio_page_align (&addr, &len);
		1805
		1806	switch (ix)
		1807	{
		1808	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1809	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1810	}
		1811	}
		1812	OUTPUT:
		1813	RETVAL
		1814
		1815	int
		1816	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1817	CODE:
		1818	{
		1819	STRLEN svlen;
		1820	void *addr = SvPVbyte (scalar, svlen);
		1821	size_t len = SvUV (length);
		1822
		1823	if (offset < 0)
		1824	offset += svlen;
		1825
		1826	if (offset < 0 || offset > svlen)
		1827	croak ("offset outside of scalar");
		1828
		1829	if (!SvOK (length) || len + offset > svlen)
		1830	len = svlen - offset;
		1831
		1832	addr = (void *)(((intptr_t)addr) + offset);
		1833	eio_page_align (&addr, &len);
		1834	#if _POSIX_MEMLOCK_RANGE
		1835	RETVAL = munlock (addr, len);
		1836	#else
		1837	RETVAL = EIO_ENOSYS ();
		1838	#endif
		1839	}
		1840	OUTPUT:
		1841	RETVAL
		1842
		1843	int
		1844	munlockall ()
		1845	CODE:
		1846	#if _POSIX_MEMLOCK
		1847	munlockall ();
		1848	#else
		1849	RETVAL = EIO_ENOSYS ();
		1850	#endif
		1851	OUTPUT:
		1852	RETVAL
		1853
		1854	int
		1855	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1856	CODE:
		1857	{
		1858	#if HAVE_LINUX_SPLICE
		1859	loff_t off_in_, off_out_;
		1860	RETVAL = splice (
		1861	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1862	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1863	length, flags
		1864	);
		1865	#else
		1866	RETVAL = EIO_ENOSYS ();
		1867	#endif
		1868	}
		1869	OUTPUT:
		1870	RETVAL
		1871
		1872	int
		1873	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1874	CODE:
		1875	#if HAVE_LINUX_SPLICE
		1876	RETVAL = tee (rfh, wfh, length, flags);
		1877	#else
		1878	RETVAL = EIO_ENOSYS ();
		1879	#endif
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	int
		1884	pipesize (aio_rfd rfh, int new_size = -1)
		1885	PROTOTYPE: $;$
		1886	CODE:
		1887	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1888	if (new_size >= 0)
		1889	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1890	else
		1891	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1892	#else
		1893	errno = ENOSYS;
		1894	RETVAL = -1;
		1895	#endif
		1896	OUTPUT:
		1897	RETVAL
		1898
		1899	void _on_next_submit (SV *cb)
		1900	CODE:
		1901	SvREFCNT_dec (on_next_submit);
		1902	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1903
1996	PROTOTYPES: DISABLE	1904	PROTOTYPES: DISABLE
		1905
		1906	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1907
		1908	BOOT:
		1909	{
		1910	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1911	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1912	}
		1913
		1914	void
		1915	DESTROY (SV *self)
		1916	CODE:
		1917	{
		1918	aio_wd wd = SvAIO_WD (self);
		1919	#if HAVE_AT
		1920	{
		1921	SV *callback = &PL_sv_undef;
		1922	dREQ; /* clobbers next_pri :/ */
		1923	next_pri = req->pri; /* restore next_pri */
		1924	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1925	req->type = EIO_WD_CLOSE;
		1926	req->wd = wd;
		1927	REQ_SEND;
		1928	}
		1929	#else
		1930	eio_wd_close_sync (wd);
		1931	#endif
		1932	}
1997		1933
1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1934	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999		1935
2000	void	1936	void
2001	cancel (aio_req_ornot req)	1937	cancel (aio_req_ornot req)
2002	CODE:	1938	CODE:
2003	req_cancel (req);	1939	eio_cancel (req);
2004		1940
2005	void	1941	void
2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1942	cb (aio_req_ornot req, SV *callback = NO_INIT)
2007	CODE:	1943	PPCODE:
		1944	{
		1945	if (GIMME_V != G_VOID)
		1946	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1947
		1948	if (items > 1)
		1949	{
		1950	SV *cb_cv = get_cb (callback);
		1951
2008	SvREFCNT_dec (req->callback);	1952	SvREFCNT_dec (req->callback);
2009	req->callback = newSVsv (callback);	1953	req->callback = SvREFCNT_inc (cb_cv);
		1954	}
		1955	}
2010		1956
2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1957	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012		1958
2013	void	1959	void
2014	add (aio_req grp, ...)	1960	add (aio_req grp, ...)
2015	PPCODE:	1961	PPCODE:
2016	{	1962	{
2017	int i;	1963	int i;
2018	aio_req req;
2019
2020	if (main_sig && !block_sig_level)
2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022		1964
2023	if (grp->int1 == 2)	1965	if (grp->int1 == 2)
2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1966	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025		1967
2026	for (i = 1; i < items; ++i )	1968	for (i = 1; i < items; ++i )
2027	{	1969	{
		1970	aio_req req;
		1971
2028	if (GIMME_V != G_VOID)	1972	if (GIMME_V != G_VOID)
2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1973	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030		1974
2031	req = SvAIO_REQ (ST (i));	1975	req = SvAIO_REQ (ST (i));
2032		1976
2033	if (req)	1977	if (req)
2034	{	1978	eio_grp_add (grp, req);
2035	++grp->size;
2036	req->grp = grp;
2037
2038	req->grp_prev = 0;
2039	req->grp_next = grp->grp_first;
2040
2041	if (grp->grp_first)
2042	grp->grp_first->grp_prev = req;
2043
2044	grp->grp_first = req;
2045	}
2046	}	1979	}
2047	}	1980	}
2048		1981
2049	void	1982	void
2050	cancel_subs (aio_req_ornot req)	1983	cancel_subs (aio_req_ornot req)
…		…
2059	AV *av;	1992	AV *av;
2060		1993
2061	grp->errorno = errno;	1994	grp->errorno = errno;
2062		1995
2063	av = newAV ();	1996	av = newAV ();
		1997	av_extend (av, items - 1);
2064		1998
2065	for (i = 1; i < items; ++i )	1999	for (i = 1; i < items; ++i )
2066	av_push (av, newSVsv (ST (i)));	2000	av_push (av, newSVsv (ST (i)));
2067		2001
2068	SvREFCNT_dec (grp->sv1);	2002	SvREFCNT_dec (grp->sv1);
…		…
2075	grp->errorno = errorno;	2009	grp->errorno = errorno;
2076		2010
2077	void	2011	void
2078	limit (aio_req grp, int limit)	2012	limit (aio_req grp, int limit)
2079	CODE:	2013	CODE:
2080	grp->int2 = limit;	2014	eio_grp_limit (grp, limit);
2081	aio_grp_feed (grp);
2082		2015
2083	void	2016	void
2084	feed (aio_req grp, SV *callback=&PL_sv_undef)	2017	feed (aio_req grp, SV *callback = &PL_sv_undef)
2085	CODE:	2018	CODE:
2086	{	2019	{
2087	SvREFCNT_dec (grp->sv2);	2020	SvREFCNT_dec (grp->sv2);
2088	grp->sv2 = newSVsv (callback);	2021	grp->sv2 = newSVsv (callback);
		2022	grp->feed = aio_grp_feed;
2089		2023
2090	if (grp->int2 <= 0)	2024	if (grp->int2 <= 0)
2091	grp->int2 = 2;	2025	grp->int2 = 2;
2092		2026
2093	aio_grp_feed (grp);	2027	eio_grp_limit (grp, grp->int2);
2094	}	2028	}
2095		2029

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