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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.202 by root, Thu Sep 29 10:01:35 2011 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
31	# include <sys/socket.h>	69	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
34	# else	295	# else
35	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	297	# endif
37	#endif	298	#endif
38		299	#ifndef MAP_HUGETLB
39	/* number of seconds after which idle threads exit */	300	# define MAP_HUGETLB 0
40	#define IDLE_TIMEOUT 10
41
42	/* used for struct dirent, AIX doesn't provide it */
43	#ifndef NAME_MAX
44	# define NAME_MAX 4096
45	#endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
		304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
46		314
47	/* buffer size for various temporary buffers */	315	#ifndef makedev
48	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
49		324
50	#define dBUF \	325	#ifndef PAGESIZE
51	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
52	LOCK (wrklock); \	327	#endif
53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
54	UNLOCK (wrklock); \
55	if (!aio_buf) \
56	return -1;
57
58	typedef SV SV8; /* byte-sv, used for argument-checking */
59		328
60	enum {	329	enum {
61	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
62	REQ_OPEN, REQ_CLOSE,
63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
64	REQ_SENDFILE,
65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66	REQ_FSYNC, REQ_FDATASYNC,
67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68	REQ_MKNOD, REQ_READDIR,
69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70	REQ_GROUP, REQ_NOP,
71	REQ_BUSY,
72	};	331	};
73		332
74	#define AIO_REQ_KLASS "IO::AIO::REQ"
75	#define AIO_GRP_KLASS "IO::AIO::GRP"
76
77	typedef struct aio_cb
78	{
79	struct aio_cb *volatile next;
80
81	SV *callback, *fh;
82	SV *sv1, *sv2;
83	void *ptr1, *ptr2;
84	off_t offs;
85	size_t size;
86	ssize_t result;
87
88	STRLEN stroffset;
89	int type;
90	int int1, int2;
91	int errorno;
92	mode_t mode; /* open */
93
94	unsigned char flags;
95	unsigned char pri;
96
97	SV *self; /* the perl counterpart of this request, if any */
98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
99	} aio_cb;
100
101	enum {
102	FLAG_CANCELLED = 0x01, /* request was cancelled */
103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105	};
106
107	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
108	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
109		336
110	enum {	337	static SV *on_next_submit;
111	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
112	PRI_MAX = 4,	339	static int max_outstanding;
113		340
114	DEFAULT_PRI = 0,	341	static s_epipe respipe;
115	PRI_BIAS = -PRI_MIN,
116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117	};
118		342
119	#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121	static unsigned int max_poll_time = 0;
122	static unsigned int max_poll_reqs = 0;
123
124	/* calculcate time difference in ~1/AIO_TICKS of a second */
125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126	{
127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
129	}
130
131	static thread_t main_tid;
132	static int main_sig;
133	static int block_sig_level;
134
135	void block_sig ()
136	{
137	sigset_t ss;
138
139	if (block_sig_level++)
140	return;
141
142	if (!main_sig)
143	return;
144
145	sigemptyset (&ss);
146	sigaddset (&ss, main_sig);
147	pthread_sigmask (SIG_BLOCK, &ss, 0);
148	}
149
150	void unblock_sig ()
151	{
152	sigset_t ss;
153
154	if (--block_sig_level)
155	return;
156
157	if (!main_sig)
158	return;
159
160	sigemptyset (&ss);
161	sigaddset (&ss, main_sig);
162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	/* worker threads management */
170	static mutex_t wrklock = MUTEX_INIT;
171
172	typedef struct worker {
173	/* locked by wrklock */
174	struct worker *prev, *next;
175
176	thread_t tid;
177
178	/* locked by reslock, reqlock or wrklock */
179	aio_req req; /* currently processed request */
180	void *dbuf;
181	DIR *dirp;
182	} worker;
183
184	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186	static void worker_clear (worker *wrk)
187	{
188	if (wrk->dirp)
189	{
190	closedir (wrk->dirp);
191	wrk->dirp = 0;
192	}
193
194	if (wrk->dbuf)
195	{
196	free (wrk->dbuf);
197	wrk->dbuf = 0;
198	}
199	}
200
201	static void worker_free (worker *wrk)
202	{
203	wrk->next->prev = wrk->prev;
204	wrk->prev->next = wrk->next;
205
206	free (wrk);
207	}
208
209	static volatile unsigned int nreqs, nready, npending;
210	static volatile unsigned int max_idle = 4;
211	static volatile unsigned int max_outstanding = 0xffffffff;
212	static int respipe [2];
213
214	static mutex_t reslock = MUTEX_INIT;
215	static mutex_t reqlock = MUTEX_INIT;
216	static cond_t reqwait = COND_INIT;
217
218	#if WORDACCESS_UNSAFE
219
220	static unsigned int get_nready ()
221	{
222	unsigned int retval;
223
224	LOCK (reqlock);
225	retval = nready;
226	UNLOCK (reqlock);
227
228	return retval;
229	}
230
231	static unsigned int get_npending ()
232	{
233	unsigned int retval;
234
235	LOCK (reslock);
236	retval = npending;
237	UNLOCK (reslock);
238
239	return retval;
240	}
241
242	static unsigned int get_nthreads ()
243	{
244	unsigned int retval;
245
246	LOCK (wrklock);
247	retval = started;
248	UNLOCK (wrklock);
249
250	return retval;
251	}
252
253	#else
254
255	# define get_nready() nready
256	# define get_npending() npending
257	# define get_nthreads() started
258
259	#endif
260
261	/*
262	* a somewhat faster data structure might be nice, but
263	* with 8 priorities this actually needs <20 insns
264	* per shift, the most expensive operation.
265	*/
266	typedef struct {
267	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268	int size;
269	} reqq;
270
271	static reqq req_queue;
272	static reqq res_queue;
273
274	int reqq_push (reqq *q, aio_req req)
275	{
276	int pri = req->pri;
277	req->next = 0;
278
279	if (q->qe[pri])
280	{
281	q->qe[pri]->next = req;
282	q->qe[pri] = req;
283	}
284	else
285	q->qe[pri] = q->qs[pri] = req;
286
287	return q->size++;
288	}
289
290	aio_req reqq_shift (reqq *q)
291	{
292	int pri;
293
294	if (!q->size)
295	return 0;
296
297	--q->size;
298
299	for (pri = NUM_PRI; pri--; )
300	{
301	aio_req req = q->qs[pri];
302
303	if (req)
304	{
305	if (!(q->qs[pri] = req->next))
306	q->qe[pri] = 0;
307
308	return req;
309	}
310	}
311
312	abort ();
313	}
314
315	static int poll_cb ();
316	static int req_invoke (aio_req req);
317	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
318	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
319		345
		346	static void
		347	want_poll (void)
		348	{
		349	/* write a dummy byte to the pipe so fh becomes ready */
		350	s_epipe_signal (&respipe);
		351	}
		352
		353	static void
		354	done_poll (void)
		355	{
		356	/* read any signals sent by the worker threads */
		357	s_epipe_drain (&respipe);
		358	}
		359
320	/* must be called at most once */	360	/* must be called at most once */
321	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
322	{	363	{
323	if (!req->self)	364	if (!req->self)
324	{	365	{
325	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
326	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327	}	368	}
328		369
329	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330	}	371	}
331		372
332	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
333	{	381	{
334	MAGIC *mg;	382	MAGIC *mg;
335		383
336	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		386	&& SvSTASH (SvRV (sv)) != aio_req_stash
		387	&& !sv_derived_from (sv, "IO::AIO::REQ")))
337	croak ("object of class " AIO_REQ_KLASS " expected");	388	croak ("object of class IO::AIO::REQ expected");
338		389
339	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	390	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340		391
341	return mg ? (aio_req)mg->mg_ptr : 0;	392	return mg ? (aio_req)mg->mg_ptr : 0;
342	}	393	}
343		394
		395	static aio_wd
		396	SvAIO_WD (SV *sv)
		397	{
		398	if (!SvROK (sv)
		399	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		401	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		402
		403	return (aio_wd)(long)SvIVX (SvRV (sv));
		404	}
		405
		406	static void
344	static void aio_grp_feed (aio_req grp)	407	aio_grp_feed (aio_req grp)
345	{	408	{
346	block_sig ();	409	if (grp->sv2 && SvOK (grp->sv2))
347
348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349	{	410	{
350	int old_len = grp->size;
351
352	if (grp->sv2 && SvOK (grp->sv2))
353	{
354	dSP;	411	dSP;
355		412
356	ENTER;	413	ENTER;
357	SAVETMPS;	414	SAVETMPS;
358	PUSHMARK (SP);	415	PUSHMARK (SP);
359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	416	XPUSHs (req_sv (grp, aio_grp_stash));
360	PUTBACK;	417	PUTBACK;
361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362	SPAGAIN;	419	SPAGAIN;
363	FREETMPS;	420	FREETMPS;
364	LEAVE;	421	LEAVE;
365	}
366
367	/* stop if no progress has been made */
368	if (old_len == grp->size)
369	{
370	SvREFCNT_dec (grp->sv2);
371	grp->sv2 = 0;
372	break;
373	}
374	}	422	}
375
376	unblock_sig ();
377	}	423	}
378		424
379	static void aio_grp_dec (aio_req grp)	425	static void
		426	req_submit (eio_req *req)
380	{	427	{
381	--grp->size;	428	eio_submit (req);
382		429
383	/* call feeder, if applicable */	430	if (expect_false (on_next_submit))
384	aio_grp_feed (grp);
385
386	/* finish, if done */
387	if (!grp->size && grp->int1)
388	{	431	{
389	block_sig ();	432	dSP;
		433	SV *cb = sv_2mortal (on_next_submit);
390		434
391	if (!req_invoke (grp))	435	on_next_submit = 0;
392	{
393	req_free (grp);
394	unblock_sig ();
395	croak (0);
396	}
397		436
398	req_free (grp);	437	PUSHMARK (SP);
399	unblock_sig ();	438	PUTBACK;
		439	call_sv (cb, G_DISCARD | G_EVAL);
400	}	440	}
401	}	441	}
402		442
		443	static int
403	static int req_invoke (aio_req req)	444	req_invoke (eio_req *req)
404	{	445	{
405	dSP;
406
407	if (req->flags & FLAG_SV1_RO_OFF)	446	if (req->flags & FLAG_SV2_RO_OFF)
408	SvREADONLY_off (req->sv1);	447	SvREADONLY_off (req->sv2);
409		448
410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	449	if (!EIO_CANCELLED (req) && req->callback)
411	{	450	{
		451	dSP;
		452	static SV *sv_result_cache; /* caches the result integer SV */
		453	SV *sv_result;
		454
412	ENTER;	455	ENTER;
413	SAVETMPS;	456	SAVETMPS;
414	PUSHMARK (SP);	457	PUSHMARK (SP);
415	EXTEND (SP, 1);	458	EXTEND (SP, 1);
416		459
		460	/* do not recreate the result IV from scratch each time */
		461	if (expect_true (sv_result_cache))
		462	{
		463	sv_result = sv_result_cache; sv_result_cache = 0;
		464	SvIV_set (sv_result, req->result);
		465	SvIOK_only (sv_result);
		466	}
		467	else
		468	{
		469	sv_result = newSViv (req->result);
		470	SvREADONLY_on (sv_result);
		471	}
		472
417	switch (req->type)	473	switch (req->type)
418	{	474	{
		475	case EIO_WD_OPEN:
		476	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		477	break;
		478
419	case REQ_READDIR:	479	case EIO_READDIR:
420	{	480	{
421	SV *rv = &PL_sv_undef;	481	SV *rv = &PL_sv_undef;
422		482
423	if (req->result >= 0)	483	if (req->result >= 0)
424	{	484	{
425	int i;	485	int i;
426	char *buf = req->ptr2;	486	char *names = (char *)req->ptr2;
		487	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427	AV *av = newAV ();	488	AV *av = newAV ();
428		489
429	av_extend (av, req->result - 1);	490	av_extend (av, req->result - 1);
430		491
431	for (i = 0; i < req->result; ++i)	492	for (i = 0; i < req->result; ++i)
432	{	493	{
433	SV *sv = newSVpv (buf, 0);	494	if (req->int1 & EIO_READDIR_DENTS)
		495	{
		496	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434		497
		498	if (req->int1 & EIO_READDIR_CUSTOM2)
		499	{
		500	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		501	AV *avent = newAV ();
		502
		503	av_extend (avent, 2);
		504
		505	if (!sv_type [ent->type])
		506	{
		507	sv_type [ent->type] = newSViv (ent->type);
		508	SvREADONLY_on (sv_type [ent->type]);
		509	}
		510
		511	av_store (avent, 0, namesv);
		512	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		513	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		514
		515	av_store (av, i, newRV_noinc ((SV *)avent));
		516	}
		517	else
435	av_store (av, i, sv);	518	av_store (av, i, namesv);
		519
		520	++ent;
		521	}
		522	else
		523	{
		524	SV *name = newSVpv (names, 0);
		525	av_store (av, i, name);
436	buf += SvCUR (sv) + 1;	526	names += SvCUR (name) + 1;
		527	}
437	}	528	}
438		529
439	rv = sv_2mortal (newRV_noinc ((SV *)av));	530	rv = sv_2mortal (newRV_noinc ((SV *)av));
440	}	531	}
441		532
442	PUSHs (rv);	533	PUSHs (rv);
		534
		535	if (req->int1 & EIO_READDIR_CUSTOM1)
		536	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
443	}	537	}
444	break;	538	break;
445		539
446	case REQ_OPEN:	540	case EIO_OPEN:
447	{	541	{
448	/* convert fd to fh */	542	/* convert fd to fh */
449	SV *fh;	543	SV *fh = &PL_sv_undef;
450		544
451	PUSHs (sv_2mortal (newSViv (req->result)));	545	if (req->result >= 0)
452	PUTBACK;	546	{
453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	547	GV *gv = (GV *)sv_newmortal ();
454	SPAGAIN;	548	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		549	char sym [64];
		550	int symlen;
		551
		552	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		553	gv_init (gv, aio_stash, sym, symlen, 0);
455		554
456	fh = POPs;	555	symlen = snprintf (
457	PUSHMARK (SP);	556	sym,
		557	sizeof (sym),
		558	"%s&=%d",
		559	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		560	(int)req->result
		561	);
		562
		563	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		564	fh = (SV *)gv;
		565	}
		566
458	XPUSHs (fh);	567	PUSHs (fh);
459	}	568	}
460	break;	569	break;
461		570
		571	case EIO_STATVFS:
		572	case EIO_FSTATVFS:
		573	{
		574	SV *rv = &PL_sv_undef;
		575
		576	#ifndef _WIN32
		577	if (req->result >= 0)
		578	{
		579	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		580	HV *hv = newHV ();
		581
		582	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		583
		584	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		585	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		586	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		587	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		588	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		589	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		590	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		591	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		592	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		593	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		594	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		595	}
		596	#endif
		597
		598	PUSHs (rv);
		599	}
		600
		601	break;
		602
462	case REQ_GROUP:	603	case EIO_GROUP:
463	req->int1 = 2; /* mark group as finished */	604	req->int1 = 2; /* mark group as finished */
464		605
465	if (req->sv1)	606	if (req->sv1)
466	{	607	{
467	int i;	608	int i;
…		…
471	for (i = 0; i <= AvFILL (av); ++i)	612	for (i = 0; i <= AvFILL (av); ++i)
472	PUSHs (*av_fetch (av, i, 0));	613	PUSHs (*av_fetch (av, i, 0));
473	}	614	}
474	break;	615	break;
475		616
476	case REQ_NOP:	617	case EIO_NOP:
477	case REQ_BUSY:	618	case EIO_BUSY:
478	break;	619	break;
479		620
480	case REQ_READLINK:	621	case EIO_READLINK:
		622	case EIO_REALPATH:
481	if (req->result > 0)	623	if (req->result > 0)
482	{	624	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
483	SvCUR_set (req->sv1, req->result);
484	*SvEND (req->sv1) = 0;
485	PUSHs (req->sv1);
486	}
487	break;	625	break;
488		626
489	case REQ_STAT:	627	case EIO_STAT:
490	case REQ_LSTAT:	628	case EIO_LSTAT:
491	case REQ_FSTAT:	629	case EIO_FSTAT:
492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	630	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		631
493	PL_laststatval = req->result;	632	if (!(PL_laststatval = req->result))
		633	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
494	PL_statcache = *(Stat_t *)(req->ptr2);	634	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
495	PUSHs (sv_2mortal (newSViv (req->result)));	635
		636	PUSHs (sv_result);
496	break;	637	break;
497		638
498	case REQ_READ:	639	case EIO_READ:
		640	{
499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	641	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
500	*SvEND (req->sv1) = 0;	642	*SvEND (req->sv2) = 0;
501	PUSHs (sv_2mortal (newSViv (req->result)));	643	SvPOK_only (req->sv2);
		644	SvSETMAGIC (req->sv2);
		645	PUSHs (sv_result);
		646	}
502	break;	647	break;
503		648
		649	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		650	if (req->result > 0)
		651	SvIV_set (sv_result, 0);
		652	/* FALLTHROUGH */
		653
504	default:	654	default:
505	PUSHs (sv_2mortal (newSViv (req->result)));	655	PUSHs (sv_result);
506	break;	656	break;
507	}	657	}
508		658
509	errno = req->errorno;	659	errno = req->errorno;
510		660
511	PUTBACK;	661	PUTBACK;
512	call_sv (req->callback, G_VOID | G_EVAL);	662	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513	SPAGAIN;	663	SPAGAIN;
		664
		665	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		666	SvREFCNT_dec (sv_result);
		667	else
		668	sv_result_cache = sv_result;
514		669
515	FREETMPS;	670	FREETMPS;
516	LEAVE;	671	LEAVE;
		672
		673	PUTBACK;
517	}	674	}
518		675
519	if (req->grp)
520	{
521	aio_req grp = req->grp;
522
523	/* unlink request */
524	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527	if (grp->grp_first == req)
528	grp->grp_first = req->grp_next;
529
530	aio_grp_dec (grp);
531	}
532
533	return !SvTRUE (ERRSV);	676	return !!SvTRUE (ERRSV);
534	}	677	}
535		678
536	static void req_free (aio_req req)	679	static void
		680	req_destroy (aio_req req)
537	{	681	{
538	if (req->self)	682	if (req->self)
539	{	683	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	684	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	685	SvREFCNT_dec (req->self);
542	}	686	}
543		687
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	688	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	689	SvREFCNT_dec (req->sv2);
		690	SvREFCNT_dec (req->sv3);
		691	SvREFCNT_dec (req->sv4);
547	SvREFCNT_dec (req->callback);	692	SvREFCNT_dec (req->callback);
548		693
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	694	Safefree (req);
553	}	695	}
554		696
		697	static void
555	static void req_cancel_subs (aio_req grp)	698	req_cancel_subs (aio_req grp)
556	{	699	{
557	aio_req sub;
558
559	if (grp->type != REQ_GROUP)	700	if (grp->type != EIO_GROUP)
560	return;	701	return;
561		702
562	SvREFCNT_dec (grp->sv2);	703	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	704	grp->sv2 = 0;
564		705
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	706	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	707	}
568		708
569	static void req_cancel (aio_req req)	709	static void ecb_cold
		710	create_respipe (void)
570	{	711	{
571	req->flags |= FLAG_CANCELLED;	712	if (s_epipe_renew (&respipe))
572		713	croak ("IO::AIO: unable to initialize result pipe");
573	req_cancel_subs (req);
574	}	714	}
575		715
576	static void *aio_proc(void *arg);	716	static void
577		717	poll_wait (void)
578	static void start_thread (void)
579	{	718	{
580	worker *wrk = calloc (1, sizeof (worker));
581
582	if (!wrk)
583	croak ("unable to allocate worker thread data");
584
585	LOCK (wrklock);
586
587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
588	{
589	wrk->prev = &wrk_first;
590	wrk->next = wrk_first.next;
591	wrk_first.next->prev = wrk;
592	wrk_first.next = wrk;
593	++started;
594	}
595	else
596	free (wrk);
597
598	UNLOCK (wrklock);
599	}
600
601	static void maybe_start_thread ()
602	{
603	if (get_nthreads () >= wanted)
604	return;
605
606	/* todo: maybe use idle here, but might be less exact */
607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608	return;
609
610	start_thread ();
611	}
612
613	static void req_send (aio_req req)
614	{
615	block_sig ();
616
617	++nreqs;
618
619	LOCK (reqlock);
620	++nready;
621	reqq_push (&req_queue, req);
622	COND_SIGNAL (reqwait);
623	UNLOCK (reqlock);
624
625	unblock_sig ();
626
627	maybe_start_thread ();
628	}
629
630	static void end_thread (void)
631	{
632	aio_req req;
633
634	Newz (0, req, 1, aio_cb);
635
636	req->type = REQ_QUIT;
637	req->pri = PRI_MAX + PRI_BIAS;
638
639	LOCK (reqlock);
640	reqq_push (&req_queue, req);
641	COND_SIGNAL (reqwait);
642	UNLOCK (reqlock);
643
644	LOCK (wrklock);
645	--started;
646	UNLOCK (wrklock);
647	}
648
649	static void set_max_idle (int nthreads)
650	{
651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
652	max_idle = nthreads <= 0 ? 1 : nthreads;
653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654	}
655
656	static void min_parallel (int nthreads)
657	{
658	if (wanted < nthreads)
659	wanted = nthreads;
660	}
661
662	static void max_parallel (int nthreads)
663	{
664	if (wanted > nthreads)
665	wanted = nthreads;
666
667	while (started > wanted)
668	end_thread ();
669	}
670
671	static void poll_wait ()
672	{
673	fd_set rfd;
674
675	while (nreqs)	719	while (eio_nreqs ())
676	{	720	{
677	int size;	721	int size;
678	if (WORDACCESS_UNSAFE) LOCK (reslock);	722
		723	X_LOCK (reslock);
679	size = res_queue.size;	724	size = res_queue.size;
680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	725	X_UNLOCK (reslock);
681		726
682	if (size)	727	if (size)
683	return;	728	return;
684		729
685	maybe_start_thread ();	730	etp_maybe_start_thread ();
686		731
687	FD_ZERO(&rfd);	732	s_epipe_wait (&respipe);
688	FD_SET(respipe [0], &rfd);
689
690	select (respipe [0] + 1, &rfd, 0, 0, 0);
691	}	733	}
692	}	734	}
693		735
694	static int poll_cb ()	736	static int
		737	poll_cb (void)
695	{	738	{
696	dSP;
697	int count = 0;
698	int maxreqs = max_poll_reqs;
699	int do_croak = 0;
700	struct timeval tv_start, tv_now;
701	aio_req req;
702
703	if (max_poll_time)
704	gettimeofday (&tv_start, 0);
705
706	block_sig ();
707
708	for (;;)	739	for (;;)
709	{	740	{
710	for (;;)	741	int res = eio_poll ();
711	{
712	maybe_start_thread ();
713		742
714	LOCK (reslock);	743	if (res > 0)
715	req = reqq_shift (&res_queue);
716
717	if (req)
718	{
719	--npending;
720
721	if (!res_queue.size)
722	{
723	/* read any signals sent by the worker threads */
724	char buf [4];
725	while (read (respipe [0], buf, 4) == 4)
726	;
727	}
728	}
729
730	UNLOCK (reslock);
731
732	if (!req)
733	break;
734
735	--nreqs;
736
737	if (req->type == REQ_GROUP && req->size)
738	{
739	req->int1 = 1; /* mark request as delayed */
740	continue;
741	}
742	else
743	{
744	if (!req_invoke (req))
745	{
746	req_free (req);
747	unblock_sig ();
748	croak (0);	744	croak (0);
749	}
750		745
751	count++;	746	if (!max_outstanding || max_outstanding > eio_nreqs ())
752	}	747	return res;
753
754	req_free (req);
755
756	if (maxreqs && !--maxreqs)
757	break;
758
759	if (max_poll_time)
760	{
761	gettimeofday (&tv_now, 0);
762
763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764	break;
765	}
766	}
767
768	if (nreqs <= max_outstanding)
769	break;
770		748
771	poll_wait ();	749	poll_wait ();
772
773	++maxreqs;
774	}	750	}
775
776	unblock_sig ();
777	return count;
778	}	751	}
779		752
780	static void create_pipe ()	753	static void ecb_cold
		754	reinit (void)
781	{	755	{
782	if (pipe (respipe))	756	create_respipe ();
783	croak ("unable to initialize result pipe");
784		757
785	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	758	if (eio_init (want_poll, done_poll) < 0)
786	croak ("cannot set result pipe to nonblocking mode");	759	croak ("IO::AIO: unable to initialise eio library");
787
788	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790	}	760	}
791		761
792	/*****************************************************************************/	762	/*****************************************************************************/
793	/* work around various missing functions */
794		763
795	#if !HAVE_PREADWRITE	764	#if !_POSIX_MAPPED_FILES
796	# define pread aio_pread	765	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
797	# define pwrite aio_pwrite	766	# define munmap(addr,length) (errno = ENOSYS, -1)
798
799	/*
800	* make our pread/pwrite safe against themselves, but not against
801	* normal read/write by using a mutex. slows down execution a lot,
802	* but that's your problem, not mine.
803	*/
804	static mutex_t preadwritelock = MUTEX_INIT;
805
806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807	{
808	ssize_t res;
809	off_t ooffset;
810
811	LOCK (preadwritelock);
812	ooffset = lseek (fd, 0, SEEK_CUR);
813	lseek (fd, offset, SEEK_SET);
814	res = read (fd, buf, count);
815	lseek (fd, ooffset, SEEK_SET);
816	UNLOCK (preadwritelock);
817
818	return res;
819	}
820
821	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822	{
823	ssize_t res;
824	off_t ooffset;
825
826	LOCK (preadwritelock);
827	ooffset = lseek (fd, 0, SEEK_CUR);
828	lseek (fd, offset, SEEK_SET);
829	res = write (fd, buf, count);
830	lseek (fd, offset, SEEK_SET);
831	UNLOCK (preadwritelock);
832
833	return res;
834	}
835	#endif
836
837	#if !HAVE_FDATASYNC
838	# define fdatasync fsync
839	#endif
840
841	#if !HAVE_READAHEAD
842	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845	{
846	dBUF;
847
848	while (count > 0)
849	{
850	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852	pread (fd, aio_buf, len, offset);
853	offset += len;
854	count -= len;
855	}
856
857	errno = 0;
858	}
859
860	#endif
861
862	#if !HAVE_READDIR_R
863	# define readdir_r aio_readdir_r
864
865	static mutex_t readdirlock = MUTEX_INIT;
866
867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868	{
869	struct dirent *e;
870	int errorno;
871
872	LOCK (readdirlock);
873
874	e = readdir (dirp);
875	errorno = errno;
876
877	if (e)
878	{
879	*res = ent;
880	strcpy (ent->d_name, e->d_name);
881	}
882	else
883	*res = 0;
884
885	UNLOCK (readdirlock);
886
887	errno = errorno;
888	return e ? 0 : -1;
889	}
890	#endif
891
892	/* sendfile always needs emulation */
893	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894	{
895	ssize_t res;
896
897	if (!count)
898	return 0;
899
900	#if HAVE_SENDFILE
901	# if __linux
902	res = sendfile (ofd, ifd, &offset, count);
903
904	# elif __freebsd
905	/*
906	* Of course, the freebsd sendfile is a dire hack with no thoughts
907	* wasted on making it similar to other I/O functions.
908	*/
909	{
910	off_t sbytes;
911	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913	if (res < 0 && sbytes)
914	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915	res = sbytes;
916	}
917
918	# elif __hpux
919	res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921	# elif __solaris
922	{
923	struct sendfilevec vec;
924	size_t sbytes;
925
926	vec.sfv_fd = ifd;
927	vec.sfv_flag = 0;
928	vec.sfv_off = offset;
929	vec.sfv_len = count;
930
931	res = sendfilev (ofd, &vec, 1, &sbytes);
932
933	if (res < 0 && sbytes)
934	res = sbytes;
935	}
936
937	# endif	767	#endif
938	#else
939	res = -1;
940	errno = ENOSYS;
941	#endif
942		768
943	if (res < 0	769	#if !_POSIX_MEMORY_PROTECTION
944	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	770	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
945	#if __solaris	771	# define PROT_NONE 0
946	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	772	# define PROT_WRITE 0
		773	# define MAP_PRIVATE 0
		774	# define MAP_SHARED 0
		775	# define MAP_FIXED 0
947	#endif	776	#endif
948	)
949	)
950	{
951	/* emulate sendfile. this is a major pain in the ass */
952	dBUF;
953		777
954	res = 0;	778	#define MMAP_MAGIC PERL_MAGIC_ext
955		779
956	while (count)	780	static int ecb_cold
957	{	781	mmap_free (pTHX_ SV *sv, MAGIC *mg)
958	ssize_t cnt;	782	{
959		783	int old_errno = errno;
960	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	784	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		785	errno = old_errno;
961		786
962	if (cnt <= 0)	787	mg->mg_obj = 0; /* just in case */
963	{
964	if (cnt && !res) res = -1;
965	break;
966	}
967		788
968	cnt = write (ofd, aio_buf, cnt);	789	SvREADONLY_off (sv);
969		790
970	if (cnt <= 0)	791	if (SvPVX (sv) != mg->mg_ptr)
971	{	792	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
972	if (cnt && !res) res = -1;
973	break;
974	}
975		793
976	offset += cnt;	794	SvCUR_set (sv, 0);
977	res += cnt;	795	SvPVX (sv) = 0;
978	count -= cnt;	796	SvOK_off (sv);
979	}
980	}
981		797
982	return res;	798	return 0;
983	}	799	}
984		800
985	/* read a full directory */	801	static MGVTBL mmap_vtbl = {
986	static void scandir_ (aio_req req, worker *self)	802	0, 0, 0, 0, mmap_free
987	{	803	};
988	DIR *dirp;
989	union
990	{
991	struct dirent d;
992	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993	} *u;
994	struct dirent *entp;
995	char *name, *names;
996	int memlen = 4096;
997	int memofs = 0;
998	int res = 0;
999	int errorno;
1000
1001	LOCK (wrklock);
1002	self->dirp = dirp = opendir (req->ptr1);
1003	self->dbuf = u = malloc (sizeof (*u));
1004	req->flags |= FLAG_PTR2_FREE;
1005	req->ptr2 = names = malloc (memlen);
1006	UNLOCK (wrklock);
1007
1008	if (dirp && u && names)
1009	for (;;)
1010	{
1011	errno = 0;
1012	readdir_r (dirp, &u->d, &entp);
1013
1014	if (!entp)
1015	break;
1016
1017	name = entp->d_name;
1018
1019	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020	{
1021	int len = strlen (name) + 1;
1022
1023	res++;
1024
1025	while (memofs + len > memlen)
1026	{
1027	memlen *= 2;
1028	LOCK (wrklock);
1029	req->ptr2 = names = realloc (names, memlen);
1030	UNLOCK (wrklock);
1031
1032	if (!names)
1033	break;
1034	}
1035
1036	memcpy (names + memofs, name, len);
1037	memofs += len;
1038	}
1039	}
1040
1041	if (errno)
1042	res = -1;
1043
1044	req->result = res;
1045	}
1046		804
1047	/*****************************************************************************/	805	/*****************************************************************************/
1048		806
1049	static void *aio_proc (void *thr_arg)	807	static SV *
		808	get_cb (SV *cb_sv)
1050	{	809	{
1051	aio_req req;	810	SvGETMAGIC (cb_sv);
1052	struct timespec ts;	811	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1053	worker *self = (worker *)thr_arg;
1054
1055	/* try to distribute timeouts somewhat evenly */
1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057	* (1000000000UL / 1024UL);
1058
1059	for (;;)
1060	{
1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063	LOCK (reqlock);
1064
1065	for (;;)
1066	{
1067	self->req = req = reqq_shift (&req_queue);
1068
1069	if (req)
1070	break;
1071
1072	++idle;
1073
1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075	== ETIMEDOUT)
1076	{
1077	if (idle > max_idle)
1078	{
1079	--idle;
1080	UNLOCK (reqlock);
1081	LOCK (wrklock);
1082	--started;
1083	UNLOCK (wrklock);
1084	goto quit;
1085	}
1086
1087	/* we are allowed to idle, so do so without any timeout */
1088	COND_WAIT (reqwait, reqlock);
1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090	}
1091
1092	--idle;
1093	}
1094
1095	--nready;
1096
1097	UNLOCK (reqlock);
1098
1099	errno = 0; /* strictly unnecessary */
1100
1101	if (!(req->flags & FLAG_CANCELLED))
1102	switch (req->type)
1103	{
1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115	case REQ_CLOSE: req->result = close (req->int1); break;
1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
1127	case REQ_READDIR: scandir_ (req, self); break;
1128
1129	case REQ_BUSY:
1130	{
1131	struct timeval tv;
1132
1133	tv.tv_sec = req->int1;
1134	tv.tv_usec = req->int2;
1135
1136	req->result = select (0, 0, 0, 0, &tv);
1137	}
1138
1139	case REQ_GROUP:
1140	case REQ_NOP:
1141	break;
1142
1143	case REQ_QUIT:
1144	goto quit;
1145
1146	default:
1147	req->result = ENOSYS;
1148	break;
1149	}
1150
1151	req->errorno = errno;
1152
1153	LOCK (reslock);
1154
1155	++npending;
1156
1157	if (!reqq_push (&res_queue, req))
1158	{
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	/* optionally signal the main thread asynchronously */
1163	if (main_sig)
1164	pthread_kill (main_tid, main_sig);
1165	}
1166
1167	self->req = 0;
1168	worker_clear (self);
1169
1170	UNLOCK (reslock);
1171	}
1172
1173	quit:
1174	LOCK (wrklock);
1175	worker_free (self);
1176	UNLOCK (wrklock);
1177
1178	return 0;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	static void atfork_prepare (void)
1184	{
1185	LOCK (wrklock);
1186	LOCK (reqlock);
1187	LOCK (reslock);
1188	#if !HAVE_PREADWRITE
1189	LOCK (preadwritelock);
1190	#endif
1191	#if !HAVE_READDIR_R
1192	LOCK (readdirlock);
1193	#endif
1194	}
1195
1196	static void atfork_parent (void)
1197	{
1198	#if !HAVE_READDIR_R
1199	UNLOCK (readdirlock);
1200	#endif
1201	#if !HAVE_PREADWRITE
1202	UNLOCK (preadwritelock);
1203	#endif
1204	UNLOCK (reslock);
1205	UNLOCK (reqlock);
1206	UNLOCK (wrklock);
1207	}
1208
1209	static void atfork_child (void)
1210	{
1211	aio_req prv;
1212
1213	while (prv = reqq_shift (&req_queue))
1214	req_free (prv);
1215
1216	while (prv = reqq_shift (&res_queue))
1217	req_free (prv);
1218
1219	while (wrk_first.next != &wrk_first)
1220	{
1221	worker *wrk = wrk_first.next;
1222
1223	if (wrk->req)
1224	req_free (wrk->req);
1225
1226	worker_clear (wrk);
1227	worker_free (wrk);
1228	}
1229
1230	started = 0;
1231	idle = 0;
1232	nreqs = 0;
1233	nready = 0;
1234	npending = 0;
1235
1236	close (respipe [0]);
1237	close (respipe [1]);
1238	create_pipe ();
1239
1240	atfork_parent ();
1241	}	812	}
1242		813
1243	#define dREQ \	814	#define dREQ \
		815	SV *cb_cv; \
1244	aio_req req; \	816	aio_req req; \
1245	int req_pri = next_pri; \	817	int req_pri = next_pri; \
1246	next_pri = DEFAULT_PRI + PRI_BIAS; \	818	next_pri = EIO_PRI_DEFAULT; \
1247	\	819	\
1248	if (SvOK (callback) && !SvROK (callback)) \	820	cb_cv = get_cb (callback); \
1249	croak ("callback must be undef or of reference type"); \
1250	\	821	\
1251	Newz (0, req, 1, aio_cb); \	822	Newz (0, req, 1, eio_req); \
1252	if (!req) \	823	if (!req) \
1253	croak ("out of memory during aio_req allocation"); \	824	croak ("out of memory during eio_req allocation"); \
1254	\	825	\
1255	req->callback = newSVsv (callback); \	826	req->callback = SvREFCNT_inc (cb_cv); \
1256	req->pri = req_pri	827	req->pri = req_pri
1257		828
1258	#define REQ_SEND \	829	#define REQ_SEND \
		830	PUTBACK; \
1259	req_send (req); \	831	req_submit (req); \
		832	SPAGAIN; \
1260	\	833	\
1261	if (GIMME_V != G_VOID) \	834	if (GIMME_V != G_VOID) \
1262	XPUSHs (req_sv (req, AIO_REQ_KLASS));	835	XPUSHs (req_sv (req, aio_req_stash));
1263		836
		837	ecb_inline void
		838	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		839	{
		840	if (expect_false (SvROK (path)))
		841	{
		842	AV *av = (AV *)SvRV (path);
		843	SV *wdob;
		844
		845	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		846	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		847
		848	path = AvARRAY (av)[1];
		849	wdob = AvARRAY (av)[0];
		850
		851	if (SvOK (wdob))
		852	{
		853	*wd = SvAIO_WD (wdob);
		854	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		855	}
		856	else
		857	*wd = EIO_INVALID_WD;
		858	}
		859
		860	*pathsv = newSVsv (path);
		861	*ptr = SvPVbyte_nolen (*pathsv);
		862	}
		863
		864	static void ecb_noinline
		865	req_set_path1 (aio_req req, SV *path)
		866	{
		867	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		868	}
		869
		870	static void ecb_noinline
		871	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		872	{
		873	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		874
		875	switch (SvTYPE (rv))
		876	{
		877	case SVt_PVIO:
		878	case SVt_PVLV:
		879	case SVt_PVGV:
		880	req->type = type_fh;
		881	req->sv1 = newSVsv (fh_or_path);
		882	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		883	break;
		884
		885	default:
		886	req->type = type_path;
		887	req_set_path1 (req, fh_or_path);
		888	break;
		889	}
		890	}
		891
		892	XS(boot_IO__AIO) ecb_cold;
		893
1264	MODULE = IO::AIO PACKAGE = IO::AIO	894	MODULE = IO::AIO PACKAGE = IO::AIO
1265		895
1266	PROTOTYPES: ENABLE	896	PROTOTYPES: ENABLE
1267		897
1268	BOOT:	898	BOOT:
1269	{	899	{
		900	static const struct {
		901	const char *name;
		902	IV iv;
		903	} *civ, const_iv[] = {
		904	# define const_niv(name, value) { # name, (IV) value },
		905	# define const_iv(name) { # name, (IV) name },
		906	# define const_eio(name) { # name, (IV) EIO_ ## name },
		907	const_iv (EXDEV)
		908	const_iv (ENOSYS)
		909	const_iv (O_RDONLY)
		910	const_iv (O_WRONLY)
		911	const_iv (O_RDWR)
		912	const_iv (O_CREAT)
		913	const_iv (O_TRUNC)
		914	const_iv (O_EXCL)
		915	const_iv (O_APPEND)
		916
		917	const_iv (O_ASYNC)
		918	const_iv (O_DIRECT)
		919	const_iv (O_NOATIME)
		920
		921	const_iv (O_CLOEXEC)
		922	const_iv (O_NOCTTY)
		923	const_iv (O_NOFOLLOW)
		924	const_iv (O_NONBLOCK)
		925	const_iv (O_EXEC)
		926	const_iv (O_SEARCH)
		927	const_iv (O_DIRECTORY)
		928	const_iv (O_DSYNC)
		929	const_iv (O_RSYNC)
		930	const_iv (O_SYNC)
		931	const_iv (O_TTY_INIT)
		932
		933	const_iv (S_IFIFO)
		934	const_iv (S_IFCHR)
		935	const_iv (S_IFBLK)
		936	const_iv (S_IFLNK)
		937	const_iv (S_IFREG)
		938	const_iv (S_IFDIR)
		939	const_iv (S_IFWHT)
		940	const_iv (S_IFSOCK)
		941	const_iv (S_IFMT)
		942
		943	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		944	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		945	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		946	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		947	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		948	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		949
		950	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		951	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		952	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		953	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		954	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		955
		956	const_iv (ST_RDONLY)
		957	const_iv (ST_NOSUID)
		958	const_iv (ST_NODEV)
		959	const_iv (ST_NOEXEC)
		960	const_iv (ST_SYNCHRONOUS)
		961	const_iv (ST_MANDLOCK)
		962	const_iv (ST_WRITE)
		963	const_iv (ST_APPEND)
		964	const_iv (ST_IMMUTABLE)
		965	const_iv (ST_NOATIME)
		966	const_iv (ST_NODIRATIME)
		967	const_iv (ST_RELATIME)
		968
		969	const_iv (PROT_NONE)
		970	const_iv (PROT_EXEC)
		971	const_iv (PROT_READ)
		972	const_iv (PROT_WRITE)
		973
		974	/*const_iv (MAP_FIXED)*/
		975	const_iv (MAP_PRIVATE)
		976	const_iv (MAP_SHARED)
		977	const_iv (MAP_ANONYMOUS)
		978
		979	/* linuxish */
		980	const_iv (MAP_HUGETLB)
		981	const_iv (MAP_LOCKED)
		982	const_iv (MAP_NORESERVE)
		983	const_iv (MAP_POPULATE)
		984	const_iv (MAP_NONBLOCK)
		985
		986	const_eio (MCL_FUTURE)
		987	const_eio (MCL_CURRENT)
		988
		989	const_eio (MS_ASYNC)
		990	const_eio (MS_INVALIDATE)
		991	const_eio (MS_SYNC)
		992
		993	const_eio (MT_MODIFY)
		994
		995	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		996	const_eio (SYNC_FILE_RANGE_WRITE)
		997	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		998
		999	const_eio (FALLOC_FL_KEEP_SIZE)
		1000
		1001	const_eio (READDIR_DENTS)
		1002	const_eio (READDIR_DIRS_FIRST)
		1003	const_eio (READDIR_STAT_ORDER)
		1004	const_eio (READDIR_FOUND_UNKNOWN)
		1005
		1006	const_eio (DT_UNKNOWN)
		1007	const_eio (DT_FIFO)
		1008	const_eio (DT_CHR)
		1009	const_eio (DT_DIR)
		1010	const_eio (DT_BLK)
		1011	const_eio (DT_REG)
		1012	const_eio (DT_LNK)
		1013	const_eio (DT_SOCK)
		1014	const_eio (DT_WHT)
		1015	};
		1016
1270	HV *stash = gv_stashpv ("IO::AIO", 1);	1017	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1018	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1019	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1020	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1271		1021
1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1022	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1023	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279		1024
1280	create_pipe ();	1025	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282	}
1283		1026
		1027	reinit ();
		1028	}
		1029
1284	void	1030	void
		1031	reinit ()
		1032	PROTOTYPE:
		1033
		1034	void
1285	max_poll_reqs (int nreqs)	1035	max_poll_reqs (unsigned int nreqs)
1286	PROTOTYPE: $	1036	PROTOTYPE: $
1287	CODE:	1037	CODE:
1288	max_poll_reqs = nreqs;	1038	eio_set_max_poll_reqs (nreqs);
1289		1039
1290	void	1040	void
1291	max_poll_time (double nseconds)	1041	max_poll_time (double nseconds)
1292	PROTOTYPE: $	1042	PROTOTYPE: $
1293	CODE:	1043	CODE:
1294	max_poll_time = nseconds * AIO_TICKS;	1044	eio_set_max_poll_time (nseconds);
1295		1045
1296	void	1046	void
1297	min_parallel (int nthreads)	1047	min_parallel (unsigned int nthreads)
1298	PROTOTYPE: $
1299
1300	void
1301	max_parallel (int nthreads)
1302	PROTOTYPE: $
1303
1304	void
1305	max_idle (int nthreads)
1306	PROTOTYPE: $	1048	PROTOTYPE: $
1307	CODE:	1049	CODE:
1308	set_max_idle (nthreads);	1050	eio_set_min_parallel (nthreads);
1309		1051
1310	int	1052	void
1311	max_outstanding (int maxreqs)	1053	max_parallel (unsigned int nthreads)
1312	PROTOTYPE: $	1054	PROTOTYPE: $
1313	CODE:	1055	CODE:
1314	RETVAL = max_outstanding;	1056	eio_set_max_parallel (nthreads);
		1057
		1058	void
		1059	max_idle (unsigned int nthreads)
		1060	PROTOTYPE: $
		1061	CODE:
		1062	eio_set_max_idle (nthreads);
		1063
		1064	void
		1065	idle_timeout (unsigned int seconds)
		1066	PROTOTYPE: $
		1067	CODE:
		1068	eio_set_idle_timeout (seconds);
		1069
		1070	void
		1071	max_outstanding (unsigned int maxreqs)
		1072	PROTOTYPE: $
		1073	CODE:
1315	max_outstanding = maxreqs;	1074	max_outstanding = maxreqs;
1316	OUTPUT:
1317	RETVAL
1318		1075
1319	void	1076	void
1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1077	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1321	SV8 * pathname
1322	int flags
1323	int mode
1324	SV * callback
1325	PROTOTYPE: $$$;$
1326	PPCODE:	1078	PPCODE:
1327	{	1079	{
1328	dREQ;	1080	dREQ;
1329		1081
		1082	req->type = EIO_WD_OPEN;
		1083	req_set_path1 (req, pathname);
		1084
		1085	REQ_SEND;
		1086	}
		1087
		1088	void
		1089	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1090	PPCODE:
		1091	{
		1092	dREQ;
		1093
1330	req->type = REQ_OPEN;	1094	req->type = EIO_OPEN;
1331	req->sv1 = newSVsv (pathname);	1095	req_set_path1 (req, pathname);
1332	req->ptr1 = SvPVbyte_nolen (req->sv1);
1333	req->int1 = flags;	1096	req->int1 = flags;
1334	req->mode = mode;	1097	req->int2 = mode;
1335		1098
1336	REQ_SEND;	1099	REQ_SEND;
1337	}	1100	}
1338		1101
1339	void	1102	void
1340	aio_close (fh,callback=&PL_sv_undef)	1103	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341	SV * fh
1342	SV * callback
1343	PROTOTYPE: $;$
1344	ALIAS:	1104	ALIAS:
1345	aio_close = REQ_CLOSE
1346	aio_fsync = REQ_FSYNC	1105	aio_fsync = EIO_FSYNC
1347	aio_fdatasync = REQ_FDATASYNC	1106	aio_fdatasync = EIO_FDATASYNC
		1107	aio_syncfs = EIO_SYNCFS
1348	PPCODE:	1108	PPCODE:
1349	{	1109	{
		1110	int fd = s_fileno_croak (fh, 0);
1350	dREQ;	1111	dREQ;
1351		1112
1352	req->type = ix;	1113	req->type = ix;
1353	req->fh = newSVsv (fh);	1114	req->sv1 = newSVsv (fh);
1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1115	req->int1 = fd;
1355		1116
1356	REQ_SEND (req);	1117	REQ_SEND (req);
1357	}	1118	}
1358		1119
1359	void	1120	void
		1121	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1122	PPCODE:
		1123	{
		1124	int fd = s_fileno_croak (fh, 0);
		1125	dREQ;
		1126
		1127	req->type = EIO_SYNC_FILE_RANGE;
		1128	req->sv1 = newSVsv (fh);
		1129	req->int1 = fd;
		1130	req->offs = offset;
		1131	req->size = nbytes;
		1132	req->int2 = flags;
		1133
		1134	REQ_SEND (req);
		1135	}
		1136
		1137	void
		1138	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1139	PPCODE:
		1140	{
		1141	int fd = s_fileno_croak (fh, 0);
		1142	dREQ;
		1143
		1144	req->type = EIO_FALLOCATE;
		1145	req->sv1 = newSVsv (fh);
		1146	req->int1 = fd;
		1147	req->int2 = mode;
		1148	req->offs = offset;
		1149	req->size = len;
		1150
		1151	REQ_SEND (req);
		1152	}
		1153
		1154	void
		1155	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1156	PPCODE:
		1157	{
		1158	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1159	int fd = s_fileno_croak (fh, 0);
		1160	dREQ;
		1161
		1162	if (expect_false (close_fd < 0))
		1163	{
		1164	int pipefd [2];
		1165
		1166	if (
		1167	#ifdef _WIN32
		1168	_pipe (pipefd, 1, _O_BINARY) < 0
		1169	#else
		1170	pipe (pipefd) < 0
		1171	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1172	#endif
		1173	|| close (pipefd [1]) < 0
		1174	)
		1175	abort (); /*D*/
		1176
		1177	close_fd = pipefd [0];
		1178	}
		1179
		1180	req->type = EIO_DUP2;
		1181	req->int1 = close_fd;
		1182	req->sv2 = newSVsv (fh);
		1183	req->int2 = fd;
		1184
		1185	REQ_SEND (req);
		1186	}
		1187
		1188	void
1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1189	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1361	SV * fh
1362	UV offset
1363	UV length
1364	SV8 * data
1365	UV dataoffset
1366	SV * callback
1367	ALIAS:	1190	ALIAS:
1368	aio_read = REQ_READ	1191	aio_read = EIO_READ
1369	aio_write = REQ_WRITE	1192	aio_write = EIO_WRITE
1370	PROTOTYPE: $$$$$;$
1371	PPCODE:	1193	PPCODE:
1372	{	1194	{
1373	STRLEN svlen;	1195	STRLEN svlen;
		1196	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374	char *svptr = SvPVbyte (data, svlen);	1197	char *svptr = SvPVbyte (data, svlen);
1375		1198	UV len = SvUV (length);
1376	SvUPGRADE (data, SVt_PV);
1377	SvPOK_on (data);
1378		1199
1379	if (dataoffset < 0)	1200	if (dataoffset < 0)
1380	dataoffset += svlen;	1201	dataoffset += svlen;
1381		1202
1382	if (dataoffset < 0 || dataoffset > svlen)	1203	if (dataoffset < 0 || dataoffset > svlen)
1383	croak ("data offset outside of string");	1204	croak ("dataoffset outside of data scalar");
1384		1205
1385	if (ix == REQ_WRITE)	1206	if (ix == EIO_WRITE)
1386	{	1207	{
1387	/* write: check length and adjust. */	1208	/* write: check length and adjust. */
1388	if (length < 0 || length + dataoffset > svlen)	1209	if (!SvOK (length) || len + dataoffset > svlen)
1389	length = svlen - dataoffset;	1210	len = svlen - dataoffset;
1390	}	1211	}
1391	else	1212	else
1392	{	1213	{
1393	/* read: grow scalar as necessary */	1214	/* read: check type and grow scalar as necessary */
		1215	SvUPGRADE (data, SVt_PV);
1394	svptr = SvGROW (data, length + dataoffset + 1);	1216	svptr = SvGROW (data, len + dataoffset + 1);
1395	}	1217	}
1396
1397	if (length < 0)
1398	croak ("length must not be negative");
1399		1218
1400	{	1219	{
1401	dREQ;	1220	dREQ;
1402		1221
1403	req->type = ix;	1222	req->type = ix;
1404	req->fh = newSVsv (fh);	1223	req->sv1 = newSVsv (fh);
1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1224	req->int1 = fd;
1406	: IoOFP (sv_2io (fh)));	1225	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407	req->offs = offset;
1408	req->size = length;	1226	req->size = len;
1409	req->sv1 = SvREFCNT_inc (data);	1227	req->sv2 = SvREFCNT_inc (data);
1410	req->ptr1 = (char *)svptr + dataoffset;	1228	req->ptr2 = (char *)svptr + dataoffset;
1411	req->stroffset = dataoffset;	1229	req->stroffset = dataoffset;
1412		1230
1413	if (!SvREADONLY (data))	1231	if (!SvREADONLY (data))
1414	{	1232	{
1415	SvREADONLY_on (data);	1233	SvREADONLY_on (data);
1416	req->flags |= FLAG_SV1_RO_OFF;	1234	req->flags |= FLAG_SV2_RO_OFF;
1417	}	1235	}
1418		1236
1419	REQ_SEND;	1237	REQ_SEND;
1420	}	1238	}
1421	}	1239	}
1422		1240
1423	void	1241	void
1424	aio_readlink (path,callback=&PL_sv_undef)	1242	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1425	SV8 * path	1243	ALIAS:
1426	SV * callback	1244	aio_readlink = EIO_READLINK
1427	PROTOTYPE: $$;$	1245	aio_realpath = EIO_REALPATH
1428	PPCODE:	1246	PPCODE:
1429	{	1247	{
1430	SV *data;
1431	dREQ;	1248	dREQ;
1432		1249
1433	data = newSV (NAME_MAX);
1434	SvPOK_on (data);
1435
1436	req->type = REQ_READLINK;	1250	req->type = ix;
1437	req->fh = newSVsv (path);	1251	req_set_path1 (req, pathname);
1438	req->ptr2 = SvPVbyte_nolen (req->fh);
1439	req->sv1 = data;
1440	req->ptr1 = SvPVbyte_nolen (data);
1441		1252
1442	REQ_SEND;	1253	REQ_SEND;
1443	}	1254	}
1444		1255
1445	void	1256	void
1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1257	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1447	SV * out_fh
1448	SV * in_fh
1449	UV in_offset
1450	UV length
1451	SV * callback
1452	PROTOTYPE: $$$$;$
1453	PPCODE:	1258	PPCODE:
1454	{	1259	{
		1260	int ifd = s_fileno_croak (in_fh , 0);
		1261	int ofd = s_fileno_croak (out_fh, 1);
1455	dREQ;	1262	dREQ;
1456		1263
1457	req->type = REQ_SENDFILE;	1264	req->type = EIO_SENDFILE;
1458	req->fh = newSVsv (out_fh);	1265	req->sv1 = newSVsv (out_fh);
1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1266	req->int1 = ofd;
1460	req->sv2 = newSVsv (in_fh);	1267	req->sv2 = newSVsv (in_fh);
1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1268	req->int2 = ifd;
1462	req->offs = in_offset;	1269	req->offs = in_offset;
1463	req->size = length;	1270	req->size = length;
1464		1271
1465	REQ_SEND;	1272	REQ_SEND;
1466	}	1273	}
1467		1274
1468	void	1275	void
1469	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1276	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470	SV * fh
1471	UV offset
1472	IV length
1473	SV * callback
1474	PROTOTYPE: $$$;$
1475	PPCODE:	1277	PPCODE:
1476	{	1278	{
		1279	int fd = s_fileno_croak (fh, 0);
1477	dREQ;	1280	dREQ;
1478		1281
1479	req->type = REQ_READAHEAD;	1282	req->type = EIO_READAHEAD;
1480	req->fh = newSVsv (fh);	1283	req->sv1 = newSVsv (fh);
1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1284	req->int1 = fd;
1482	req->offs = offset;	1285	req->offs = offset;
1483	req->size = length;	1286	req->size = length;
1484		1287
1485	REQ_SEND;	1288	REQ_SEND;
1486	}	1289	}
1487		1290
1488	void	1291	void
1489	aio_stat (fh_or_path,callback=&PL_sv_undef)	1292	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490	SV8 * fh_or_path
1491	SV * callback
1492	ALIAS:	1293	ALIAS:
1493	aio_stat = REQ_STAT	1294	aio_stat = EIO_STAT
1494	aio_lstat = REQ_LSTAT	1295	aio_lstat = EIO_LSTAT
		1296	aio_statvfs = EIO_STATVFS
1495	PPCODE:	1297	PPCODE:
1496	{	1298	{
1497	dREQ;	1299	dREQ;
1498		1300
1499	req->ptr2 = malloc (sizeof (Stat_t));
1500	if (!req->ptr2)
1501	{
1502	req_free (req);
1503	croak ("out of memory during aio_stat statdata allocation");
1504	}
1505
1506	req->flags |= FLAG_PTR2_FREE;
1507
1508	if (SvPOK (fh_or_path))
1509	{
1510	req->type = ix;
1511	req->sv1 = newSVsv (fh_or_path);	1301	req->sv1 = newSVsv (fh_or_path);
1512	req->ptr1 = SvPVbyte_nolen (req->sv1);	1302	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1513	}
1514	else
1515	{
1516	req->type = REQ_FSTAT;
1517	req->fh = newSVsv (fh_or_path);
1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519	}
1520
1521	REQ_SEND;	1303	REQ_SEND;
1522	}	1304	}
1523		1305
		1306	UV
		1307	major (UV dev)
		1308	ALIAS:
		1309	minor = 1
		1310	CODE:
		1311	RETVAL = ix ? major (dev) : minor (dev);
		1312	OUTPUT:
		1313	RETVAL
		1314
		1315	UV
		1316	makedev (UV maj, UV min)
		1317	CODE:
		1318	RETVAL = makedev (maj, min);
		1319	OUTPUT:
		1320	RETVAL
		1321
1524	void	1322	void
		1323	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1329	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1330	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1331
		1332	REQ_SEND;
		1333	}
		1334
		1335	void
		1336	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1337	PPCODE:
		1338	{
		1339	dREQ;
		1340
		1341	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1342	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1343
		1344	REQ_SEND;
		1345	}
		1346
		1347	void
		1348	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1349	PPCODE:
		1350	{
		1351	dREQ;
		1352
		1353	req->int2 = mode;
		1354	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1355
		1356	REQ_SEND;
		1357	}
		1358
		1359	void
		1360	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1361	PPCODE:
		1362	{
		1363	dREQ;
		1364
		1365	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1366	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1367	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1368
		1369	REQ_SEND;
		1370	}
		1371
		1372	void
		1373	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1374	PPCODE:
		1375	{
		1376	dREQ;
		1377
		1378	req->type = EIO_READDIR;
		1379	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1380
		1381	if (flags & EIO_READDIR_DENTS)
		1382	req->int1 |= EIO_READDIR_CUSTOM2;
		1383
		1384	req_set_path1 (req, pathname);
		1385
		1386	REQ_SEND;
		1387	}
		1388
		1389	void
		1390	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1391	PPCODE:
		1392	{
		1393	dREQ;
		1394
		1395	req->type = EIO_MKDIR;
		1396	req->int2 = mode;
		1397	req_set_path1 (req, pathname);
		1398
		1399	REQ_SEND;
		1400	}
		1401
		1402	void
1525	aio_unlink (pathname,callback=&PL_sv_undef)	1403	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526	SV8 * pathname
1527	SV * callback
1528	ALIAS:	1404	ALIAS:
1529	aio_unlink = REQ_UNLINK	1405	aio_unlink = EIO_UNLINK
1530	aio_rmdir = REQ_RMDIR	1406	aio_rmdir = EIO_RMDIR
1531	aio_readdir = REQ_READDIR	1407	aio_readdir = EIO_READDIR
1532	PPCODE:	1408	PPCODE:
1533	{	1409	{
1534	dREQ;	1410	dREQ;
1535		1411
1536	req->type = ix;	1412	req->type = ix;
1537	req->sv1 = newSVsv (pathname);	1413	req_set_path1 (req, pathname);
1538	req->ptr1 = SvPVbyte_nolen (req->sv1);
1539		1414
1540	REQ_SEND;	1415	REQ_SEND;
1541	}	1416	}
1542		1417
1543	void	1418	void
		1419	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1420	ALIAS:
		1421	aio_link = EIO_LINK
		1422	aio_symlink = EIO_SYMLINK
		1423	aio_rename = EIO_RENAME
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427	eio_wd wd2 = 0;
		1428
		1429	req->type = ix;
		1430	req_set_path1 (req, oldpath);
		1431	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1432	req->int3 = (long)wd2;
		1433
		1434	REQ_SEND;
		1435	}
		1436
		1437	void
1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)	1438	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1545	SV8 * pathname
1546	UV mode
1547	SV * callback
1548	PPCODE:	1439	PPCODE:
1549	{	1440	{
1550	dREQ;	1441	dREQ;
1551		1442
1552	req->type = REQ_MKDIR;	1443	req->type = EIO_MKNOD;
1553	req->sv1 = newSVsv (pathname);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1555	req->mode = mode;	1444	req->int2 = (mode_t)mode;
1556		1445	req->offs = dev;
1557	REQ_SEND;	1446	req_set_path1 (req, pathname);
1558	}
1559
1560	void
1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1562	SV8 * oldpath
1563	SV8 * newpath
1564	SV * callback
1565	ALIAS:
1566	aio_link = REQ_LINK
1567	aio_symlink = REQ_SYMLINK
1568	aio_rename = REQ_RENAME
1569	PPCODE:
1570	{
1571	dREQ;
1572
1573	req->type = ix;
1574	req->fh = newSVsv (oldpath);
1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1576	req->sv1 = newSVsv (newpath);
1577	req->ptr1 = SvPVbyte_nolen (req->sv1);
1578		1447
1579	REQ_SEND;	1448	REQ_SEND;
1580	}	1449	}
1581		1450
1582	void	1451	void
1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1452	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1584	SV8 * pathname	1453	ALIAS:
1585	UV mode	1454	aio_mtouch = EIO_MTOUCH
1586	UV dev	1455	aio_msync = EIO_MSYNC
1587	SV * callback	1456	PPCODE:
		1457	{
		1458	STRLEN svlen;
		1459	char *svptr = SvPVbyte (data, svlen);
		1460	UV len = SvUV (length);
		1461
		1462	if (offset < 0)
		1463	offset += svlen;
		1464
		1465	if (offset < 0 || offset > svlen)
		1466	croak ("offset outside of scalar");
		1467
		1468	if (!SvOK (length) || len + offset > svlen)
		1469	len = svlen - offset;
		1470
		1471	{
		1472	dREQ;
		1473
		1474	req->type = ix;
		1475	req->sv2 = SvREFCNT_inc (data);
		1476	req->ptr2 = (char *)svptr + offset;
		1477	req->size = len;
		1478	req->int1 = flags;
		1479
		1480	REQ_SEND;
		1481	}
		1482	}
		1483
		1484	void
		1485	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1486	PPCODE:
		1487	{
		1488	STRLEN svlen;
		1489	char *svptr = SvPVbyte (data, svlen);
		1490	UV len = SvUV (length);
		1491
		1492	if (offset < 0)
		1493	offset += svlen;
		1494
		1495	if (offset < 0 || offset > svlen)
		1496	croak ("offset outside of scalar");
		1497
		1498	if (!SvOK (length) || len + offset > svlen)
		1499	len = svlen - offset;
		1500
		1501	{
		1502	dREQ;
		1503
		1504	req->type = EIO_MLOCK;
		1505	req->sv2 = SvREFCNT_inc (data);
		1506	req->ptr2 = (char *)svptr + offset;
		1507	req->size = len;
		1508
		1509	REQ_SEND;
		1510	}
		1511	}
		1512
		1513	void
		1514	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1515	PPCODE:
		1516	{
		1517	dREQ;
		1518
		1519	req->type = EIO_MLOCKALL;
		1520	req->int1 = flags;
		1521
		1522	REQ_SEND;
		1523	}
		1524
		1525	void
		1526	aio_busy (double delay, SV *callback=&PL_sv_undef)
1588	PPCODE:	1527	PPCODE:
1589	{	1528	{
1590	dREQ;	1529	dREQ;
1591		1530
1592	req->type = REQ_MKNOD;	1531	req->type = EIO_BUSY;
1593	req->sv1 = newSVsv (pathname);	1532	req->nv1 = delay < 0. ? 0. : delay;
1594	req->ptr1 = SvPVbyte_nolen (req->sv1);	1533
1595	req->mode = (mode_t)mode;
1596	req->offs = dev;
1597
1598	REQ_SEND;	1534	REQ_SEND;
1599	}	1535	}
1600		1536
1601	void	1537	void
1602	aio_busy (delay,callback=&PL_sv_undef)	1538	aio_group (SV *callback=&PL_sv_undef)
1603	double delay	1539	PPCODE:
1604	SV * callback
1605	PPCODE:
1606	{	1540	{
1607	dREQ;	1541	dREQ;
1608		1542
1609	req->type = REQ_BUSY;	1543	req->type = EIO_GROUP;
1610	req->int1 = delay < 0. ? 0 : delay;
1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612		1544
1613	REQ_SEND;	1545	req_submit (req);
		1546	XPUSHs (req_sv (req, aio_grp_stash));
1614	}	1547	}
1615		1548
1616	void	1549	void
1617	aio_group (callback=&PL_sv_undef)	1550	aio_nop (SV *callback=&PL_sv_undef)
1618	SV * callback	1551	ALIAS:
1619	PROTOTYPE: ;$	1552	aio_nop = EIO_NOP
1620	PPCODE:	1553	aio_sync = EIO_SYNC
		1554	PPCODE:
1621	{	1555	{
1622	dREQ;	1556	dREQ;
1623		1557
1624	req->type = REQ_GROUP;
1625
1626	req_send (req);
1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1628	}
1629
1630	void
1631	aio_nop (callback=&PL_sv_undef)
1632	SV * callback
1633	PPCODE:
1634	{
1635	dREQ;
1636
1637	req->type = REQ_NOP;	1558	req->type = ix;
1638		1559
1639	REQ_SEND;	1560	REQ_SEND;
1640	}	1561	}
1641		1562
1642	int	1563	int
1643	aioreq_pri (int pri = 0)	1564	aioreq_pri (int pri = 0)
1644	PROTOTYPE: ;$
1645	CODE:	1565	CODE:
1646	RETVAL = next_pri - PRI_BIAS;	1566	RETVAL = next_pri;
1647	if (items > 0)	1567	if (items > 0)
1648	{	1568	{
1649	if (pri < PRI_MIN) pri = PRI_MIN;	1569	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650	if (pri > PRI_MAX) pri = PRI_MAX;	1570	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651	next_pri = pri + PRI_BIAS;	1571	next_pri = pri;
1652	}	1572	}
1653	OUTPUT:	1573	OUTPUT:
1654	RETVAL	1574	RETVAL
1655		1575
1656	void	1576	void
1657	aioreq_nice (int nice = 0)	1577	aioreq_nice (int nice = 0)
1658	CODE:	1578	CODE:
1659	nice = next_pri - nice;	1579	nice = next_pri - nice;
1660	if (nice < PRI_MIN) nice = PRI_MIN;	1580	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661	if (nice > PRI_MAX) nice = PRI_MAX;	1581	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662	next_pri = nice + PRI_BIAS;	1582	next_pri = nice;
1663		1583
1664	void	1584	void
1665	flush ()	1585	flush ()
1666	PROTOTYPE:
1667	CODE:	1586	CODE:
1668	while (nreqs)	1587	while (eio_nreqs ())
1669	{	1588	{
1670	poll_wait ();	1589	poll_wait ();
1671	poll_cb ();	1590	poll_cb ();
1672	}	1591	}
1673		1592
1674	int	1593	int
1675	poll()	1594	poll ()
1676	PROTOTYPE:
1677	CODE:	1595	CODE:
1678	poll_wait ();	1596	poll_wait ();
1679	RETVAL = poll_cb ();	1597	RETVAL = poll_cb ();
1680	OUTPUT:	1598	OUTPUT:
1681	RETVAL	1599	RETVAL
1682		1600
1683	int	1601	int
1684	poll_fileno()	1602	poll_fileno ()
1685	PROTOTYPE:
1686	CODE:	1603	CODE:
1687	RETVAL = respipe [0];	1604	RETVAL = s_epipe_fd (&respipe);
1688	OUTPUT:	1605	OUTPUT:
1689	RETVAL	1606	RETVAL
1690		1607
1691	int	1608	int
1692	poll_cb(...)	1609	poll_cb (...)
1693	PROTOTYPE:	1610	PROTOTYPE:
1694	CODE:	1611	CODE:
1695	RETVAL = poll_cb ();	1612	RETVAL = poll_cb ();
1696	OUTPUT:	1613	OUTPUT:
1697	RETVAL	1614	RETVAL
1698		1615
1699	void	1616	void
1700	poll_wait()	1617	poll_wait ()
1701	PROTOTYPE:
1702	CODE:	1618	CODE:
1703	poll_wait ();	1619	poll_wait ();
1704		1620
1705	void
1706	setsig (int signum = SIGIO)
1707	PROTOTYPE: ;$
1708	CODE:
1709	{
1710	if (block_sig_level)
1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713	LOCK (reslock);
1714	main_tid = pthread_self ();
1715	main_sig = signum;
1716	UNLOCK (reslock);
1717
1718	if (main_sig && npending)
1719	pthread_kill (main_tid, main_sig);
1720	}
1721
1722	void
1723	aio_block (SV *cb)
1724	PROTOTYPE: &
1725	PPCODE:
1726	{
1727	int count;
1728
1729	block_sig ();
1730	PUSHMARK (SP);
1731	PUTBACK;
1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733	SPAGAIN;
1734	unblock_sig ();
1735
1736	if (SvTRUE (ERRSV))
1737	croak (0);
1738
1739	XSRETURN (count);
1740	}
1741
1742	int	1621	int
1743	nreqs()	1622	nreqs ()
1744	PROTOTYPE:
1745	CODE:	1623	CODE:
1746	RETVAL = nreqs;	1624	RETVAL = eio_nreqs ();
1747	OUTPUT:	1625	OUTPUT:
1748	RETVAL	1626	RETVAL
1749		1627
1750	int	1628	int
1751	nready()	1629	nready ()
1752	PROTOTYPE:
1753	CODE:	1630	CODE:
1754	RETVAL = get_nready ();	1631	RETVAL = eio_nready ();
1755	OUTPUT:	1632	OUTPUT:
1756	RETVAL	1633	RETVAL
1757		1634
1758	int	1635	int
1759	npending()	1636	npending ()
1760	PROTOTYPE:
1761	CODE:	1637	CODE:
1762	RETVAL = get_npending ();	1638	RETVAL = eio_npending ();
1763	OUTPUT:	1639	OUTPUT:
1764	RETVAL	1640	RETVAL
1765		1641
1766	int	1642	int
1767	nthreads()	1643	nthreads ()
1768	PROTOTYPE:
1769	CODE:	1644	CODE:
1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1645	RETVAL = eio_nthreads ();
1771	RETVAL = started;
1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773	OUTPUT:	1646	OUTPUT:
1774	RETVAL	1647	RETVAL
1775		1648
		1649	int
		1650	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1651	CODE:
		1652	RETVAL = posix_fadvise (fh, offset, length, advice);
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	IV
		1657	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1658	CODE:
		1659	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1660	OUTPUT:
		1661	RETVAL
		1662
		1663	void
		1664	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1665	PPCODE:
		1666	sv_unmagic (scalar, MMAP_MAGIC);
		1667	{
		1668	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1669	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1670	if (addr == (void *)-1)
		1671	XSRETURN_NO;
		1672
		1673	sv_force_normal (scalar);
		1674
		1675	/* we store the length in mg_obj, as namlen is I32 :/ */
		1676	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1677	->mg_obj = (SV *)length;
		1678
		1679	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1680
		1681	if (!(prot & PROT_WRITE))
		1682	SvREADONLY_on (scalar);
		1683
		1684	if (SvLEN (scalar))
		1685	Safefree (SvPVX (scalar));
		1686
		1687	SvPVX (scalar) = (char *)addr;
		1688	SvCUR_set (scalar, length);
		1689	SvLEN_set (scalar, 0);
		1690	SvPOK_only (scalar);
		1691
		1692	XSRETURN_YES;
		1693	}
		1694
		1695	void
		1696	munmap (SV *scalar)
		1697	CODE:
		1698	sv_unmagic (scalar, MMAP_MAGIC);
		1699
		1700	int
		1701	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1702	ALIAS:
		1703	mprotect = 1
		1704	CODE:
		1705	{
		1706	STRLEN svlen;
		1707	void *addr = SvPVbyte (scalar, svlen);
		1708	size_t len = SvUV (length);
		1709
		1710	if (offset < 0)
		1711	offset += svlen;
		1712
		1713	if (offset < 0 || offset > svlen)
		1714	croak ("offset outside of scalar");
		1715
		1716	if (!SvOK (length) || len + offset > svlen)
		1717	len = svlen - offset;
		1718
		1719	addr = (void *)(((intptr_t)addr) + offset);
		1720	eio_page_align (&addr, &len);
		1721
		1722	switch (ix)
		1723	{
		1724	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1725	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1726	}
		1727	}
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1733	CODE:
		1734	{
		1735	STRLEN svlen;
		1736	void *addr = SvPVbyte (scalar, svlen);
		1737	size_t len = SvUV (length);
		1738
		1739	if (offset < 0)
		1740	offset += svlen;
		1741
		1742	if (offset < 0 || offset > svlen)
		1743	croak ("offset outside of scalar");
		1744
		1745	if (!SvOK (length) || len + offset > svlen)
		1746	len = svlen - offset;
		1747
		1748	addr = (void *)(((intptr_t)addr) + offset);
		1749	eio_page_align (&addr, &len);
		1750	#if _POSIX_MEMLOCK_RANGE
		1751	RETVAL = munlock (addr, len);
		1752	#else
		1753	RETVAL = ((errno = ENOSYS), -1);
		1754	#endif
		1755	}
		1756	OUTPUT:
		1757	RETVAL
		1758
		1759	int
		1760	munlockall ()
		1761	CODE:
		1762	#if _POSIX_MEMLOCK
		1763	munlockall ();
		1764	#else
		1765	RETVAL = -1;
		1766	errno = ENOSYS;
		1767	#endif
		1768	OUTPUT:
		1769	RETVAL
		1770
		1771	void _on_next_submit (SV *cb)
		1772	CODE:
		1773	SvREFCNT_dec (on_next_submit);
		1774	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1775
1776	PROTOTYPES: DISABLE	1776	PROTOTYPES: DISABLE
1777		1777
		1778	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1779
		1780	BOOT:
		1781	{
		1782	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1783	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1784	}
		1785
		1786	void
		1787	DESTROY (SV *self)
		1788	CODE:
		1789	{
		1790	aio_wd wd = SvAIO_WD (self);
		1791	#if HAVE_AT
		1792	SV *callback = &PL_sv_undef;
		1793	dREQ; /* clobbers next_pri :/ */
		1794	req->type = EIO_WD_CLOSE;
		1795	req->wd = wd;
		1796	REQ_SEND;
		1797	#else
		1798	eio_wd_close_sync (wd);
		1799	#endif
		1800	}
		1801
1778	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1802	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779		1803
1780	void	1804	void
1781	cancel (aio_req_ornot req)	1805	cancel (aio_req_ornot req)
1782	CODE:	1806	CODE:
1783	req_cancel (req);	1807	eio_cancel (req);
1784		1808
1785	void	1809	void
1786	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1810	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787	CODE:	1811	PPCODE:
		1812	{
		1813	if (GIMME_V != G_VOID)
		1814	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1815
		1816	if (items > 1)
		1817	{
		1818	SV *cb_cv =get_cb (callback);
		1819
1788	SvREFCNT_dec (req->callback);	1820	SvREFCNT_dec (req->callback);
1789	req->callback = newSVsv (callback);	1821	req->callback = SvREFCNT_inc (cb_cv);
		1822	}
		1823	}
1790		1824
1791	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1825	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792		1826
1793	void	1827	void
1794	add (aio_req grp, ...)	1828	add (aio_req grp, ...)
1795	PPCODE:	1829	PPCODE:
1796	{	1830	{
1797	int i;	1831	int i;
1798	aio_req req;
1799
1800	if (main_sig && !block_sig_level)
1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802		1832
1803	if (grp->int1 == 2)	1833	if (grp->int1 == 2)
1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1834	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805		1835
1806	for (i = 1; i < items; ++i )	1836	for (i = 1; i < items; ++i )
1807	{	1837	{
		1838	aio_req req;
		1839
1808	if (GIMME_V != G_VOID)	1840	if (GIMME_V != G_VOID)
1809	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1841	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810		1842
1811	req = SvAIO_REQ (ST (i));	1843	req = SvAIO_REQ (ST (i));
1812		1844
1813	if (req)	1845	if (req)
1814	{	1846	eio_grp_add (grp, req);
1815	++grp->size;
1816	req->grp = grp;
1817
1818	req->grp_prev = 0;
1819	req->grp_next = grp->grp_first;
1820
1821	if (grp->grp_first)
1822	grp->grp_first->grp_prev = req;
1823
1824	grp->grp_first = req;
1825	}
1826	}	1847	}
1827	}	1848	}
1828		1849
1829	void	1850	void
1830	cancel_subs (aio_req_ornot req)	1851	cancel_subs (aio_req_ornot req)
…		…
1839	AV *av;	1860	AV *av;
1840		1861
1841	grp->errorno = errno;	1862	grp->errorno = errno;
1842		1863
1843	av = newAV ();	1864	av = newAV ();
		1865	av_extend (av, items - 1);
1844		1866
1845	for (i = 1; i < items; ++i )	1867	for (i = 1; i < items; ++i )
1846	av_push (av, newSVsv (ST (i)));	1868	av_push (av, newSVsv (ST (i)));
1847		1869
1848	SvREFCNT_dec (grp->sv1);	1870	SvREFCNT_dec (grp->sv1);
…		…
1855	grp->errorno = errorno;	1877	grp->errorno = errorno;
1856		1878
1857	void	1879	void
1858	limit (aio_req grp, int limit)	1880	limit (aio_req grp, int limit)
1859	CODE:	1881	CODE:
1860	grp->int2 = limit;	1882	eio_grp_limit (grp, limit);
1861	aio_grp_feed (grp);
1862		1883
1863	void	1884	void
1864	feed (aio_req grp, SV *callback=&PL_sv_undef)	1885	feed (aio_req grp, SV *callback=&PL_sv_undef)
1865	CODE:	1886	CODE:
1866	{	1887	{
1867	SvREFCNT_dec (grp->sv2);	1888	SvREFCNT_dec (grp->sv2);
1868	grp->sv2 = newSVsv (callback);	1889	grp->sv2 = newSVsv (callback);
		1890	grp->feed = aio_grp_feed;
1869		1891
1870	if (grp->int2 <= 0)	1892	if (grp->int2 <= 0)
1871	grp->int2 = 2;	1893	grp->int2 = 2;
1872		1894
1873	aio_grp_feed (grp);	1895	eio_grp_limit (grp, grp->int2);
1874	}	1896	}
1875		1897

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