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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC vs.
Revision 1.208 by root, Sat Jan 7 18:42:43 2012 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	/* 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
18	#ifdef _WIN32	33	#ifdef _WIN32
19		34
20	# define SIGIO 0	35	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	36
22	#undef malloc	37	#undef malloc
23	#undef free	38	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	39	#undef open
27	# undef read	40	#undef read
28	# undef write	41	#undef write
		42	#undef send
		43	#undef recv
29	# undef stat	44	#undef stat
		45	#undef lstat
30	# undef fstat	46	#undef fstat
31	# define lstat stat
32	# undef truncate	47	#undef truncate
33	# undef ftruncate	48	#undef ftruncate
34	# undef open	49	#undef open
		50	#undef link
35	# undef close	51	#undef close
36	# undef unlink	52	#undef unlink
		53	#undef mkdir
37	# undef rmdir	54	#undef rmdir
38	# undef rename	55	#undef rename
39	# undef lseek	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
40		66
41	# define chown(a,b,c) (errno = ENOSYS, -1)	67	#define EIO_STRUCT_STAT struct _stati64
42	# define fchown(a,b,c) (errno = ENOSYS, -1)	68	#define EIO_STRUCT_STATI64
43	# define fchmod(a,b) (errno = ENOSYS, -1)
44	# define symlink(a,b) (errno = ENOSYS, -1)
45	# define readlink(a,b,c) (errno = ENOSYS, -1)
46	# define mknod(a,b,c) (errno = ENOSYS, -1)
47	# define truncate(a,b) (errno = ENOSYS, -1)
48	# define ftruncate(fd,o) chsize ((fd), (o))
49	# define fsync(fd) _commit (fd)
50	# define opendir(fd) (errno = ENOSYS, 0)
51	# define readdir(fd) (errno = ENOSYS, -1)
52	# define closedir(fd) (errno = ENOSYS, -1)
53	# define mkdir(a,b) mkdir (a)
54		69
55	#else	70	#else
56		71
57	# include "autoconf/config.h"
58	# include <sys/time.h>	72	#include <sys/time.h>
59	# include <sys/select.h>	73	#include <sys/select.h>
60	# include <unistd.h>	74	#include <unistd.h>
61	# include <utime.h>	75	#include <utime.h>
62	# include <signal.h>	76	#include <signal.h>
63	typedef struct dirent X_DIRENT;
64		77
65	#endif	78	#define EIO_STRUCT_STAT Stat_t
66		79
67	#if HAVE_SENDFILE
68	# if __linux
69	# include <sys/sendfile.h>
70	# elif __freebsd
71	# include <sys/socket.h>
72	# include <sys/uio.h>
73	# elif __hpux
74	# include <sys/socket.h>
75	# elif __solaris /* not yet */
76	# include <sys/sendfile.h>
77	# else
78	# error sendfile support requested but not available
79	# endif	80	#endif
80	#endif
81
82	/* number of seconds after which idle threads exit */
83	#define IDLE_TIMEOUT 10
84
85	/* used for struct dirent, AIX doesn't provide it */
86	#ifndef NAME_MAX
87	# define NAME_MAX 4096
88	#endif
89
90	/* buffer size for various temporary buffers */
91	#define AIO_BUFSIZE 65536
92		81
93	/* use NV for 32 bit perls as it allows larger offsets */	82	/* use NV for 32 bit perls as it allows larger offsets */
94	#if IVSIZE >= 8	83	#if IVSIZE >= 8
		84	# define VAL64 IV
95	# define SvVAL64 SvIV	85	# define SvVAL64 SvIV
		86	# define newSVval64 newSViv
96	#else	87	#else
		88	# define VAL64 NV
97	# define SvVAL64 SvNV	89	# define SvVAL64 SvNV
		90	# define newSVval64 newSVnv
98	#endif	91	#endif
99		92
100	#define dBUF \	93	/*****************************************************************************/
101	char *aio_buf; \	94
102	X_LOCK (wrklock); \	95	#if __GNUC__ >= 3
103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	96	# define expect(expr,value) __builtin_expect ((expr),(value))
104	X_UNLOCK (wrklock); \	97	#else
105	if (!aio_buf) \	98	# define expect(expr,value) (expr)
106	return -1;	99	#endif
		100
		101	#define expect_false(expr) expect ((expr) != 0, 0)
		102	#define expect_true(expr) expect ((expr) != 0, 1)
		103
		104	/*****************************************************************************/
107		105
108	typedef SV SV8; /* byte-sv, used for argument-checking */	106	typedef SV SV8; /* byte-sv, used for argument-checking */
		107	typedef int aio_rfd; /* read file desriptor */
		108	typedef int aio_wfd; /* write file descriptor */
		109
		110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		111
		112	#define EIO_REQ_MEMBERS \
		113	SV *callback; \
		114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
		116	STRLEN stroffset; \
		117	SV *self;
		118
		119	#define EIO_NO_WRAPPERS 1
		120
		121	#include "libeio/config.h"
		122	#include "libeio/eio.h"
		123
		124	static int req_invoke (eio_req *req);
		125	#define EIO_FINISH(req) req_invoke (req)
		126	static void req_destroy (eio_req *grp);
		127	#define EIO_DESTROY(req) req_destroy (req)
		128
		129	#include "libeio/eio.c"
		130
		131	/* Linux/others */
		132	#ifndef O_ASYNC
		133	# define O_ASYNC 0
		134	#endif
		135	#ifndef O_DIRECT
		136	# define O_DIRECT 0
		137	#endif
		138	#ifndef O_NOATIME
		139	# define O_NOATIME 0
		140	#endif
		141
		142	/* POSIX */
		143	#ifndef O_CLOEXEC
		144	# define O_CLOEXEC 0
		145	#endif
		146	#ifndef O_NOFOLLOW
		147	# define O_NOFOLLOW 0
		148	#endif
		149	#ifndef O_NOCTTY
		150	# define O_NOCTTY 0
		151	#endif
		152	#ifndef O_NONBLOCK
		153	# define O_NONBLOCK 0
		154	#endif
		155	#ifndef O_EXEC
		156	# define O_EXEC 0
		157	#endif
		158	#ifndef O_SEARCH
		159	# define O_SEARCH 0
		160	#endif
		161	#ifndef O_DIRECTORY
		162	# define O_DIRECTORY 0
		163	#endif
		164	#ifndef O_DSYNC
		165	# define O_DSYNC 0
		166	#endif
		167	#ifndef O_RSYNC
		168	# define O_RSYNC 0
		169	#endif
		170	#ifndef O_SYNC
		171	# define O_SYNC 0
		172	#endif
		173	#ifndef O_TTY_INIT
		174	# define O_TTY_INIT 0
		175	#endif
		176
		177	#ifndef POSIX_FADV_NORMAL
		178	# define POSIX_FADV_NORMAL 0
		179	#endif
		180	#ifndef POSIX_FADV_SEQUENTIAL
		181	# define POSIX_FADV_SEQUENTIAL 0
		182	#endif
		183	#ifndef POSIX_FADV_RANDOM
		184	# define POSIX_FADV_RANDOM 0
		185	#endif
		186	#ifndef POSIX_FADV_NOREUSE
		187	# define POSIX_FADV_NOREUSE 0
		188	#endif
		189	#ifndef POSIX_FADV_WILLNEED
		190	# define POSIX_FADV_WILLNEED 0
		191	#endif
		192	#ifndef POSIX_FADV_DONTNEED
		193	# define POSIX_FADV_DONTNEED 0
		194	#endif
		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef POSIX_MADV_NORMAL
		201	# define POSIX_MADV_NORMAL 0
		202	#endif
		203	#ifndef POSIX_MADV_SEQUENTIAL
		204	# define POSIX_MADV_SEQUENTIAL 0
		205	#endif
		206	#ifndef POSIX_MADV_RANDOM
		207	# define POSIX_MADV_RANDOM 0
		208	#endif
		209	#ifndef POSIX_MADV_WILLNEED
		210	# define POSIX_MADV_WILLNEED 0
		211	#endif
		212	#ifndef POSIX_MADV_DONTNEED
		213	# define POSIX_MADV_DONTNEED 0
		214	#endif
		215
		216	#if !HAVE_POSIX_MADVISE
		217	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		218	#endif
		219
		220	#ifndef PROT_NONE
		221	# define PROT_NONE 0
		222	#endif
		223	#ifndef PROT_READ
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_WRITE
		227	# define PROT_READ 0
		228	#endif
		229	#ifndef PROT_EXEC
		230	# define PROT_EXEC 0
		231	#endif
		232
		233	#ifndef ST_RDONLY
		234	# define ST_RDONLY 0
		235	#endif
		236	#ifndef ST_NOSUID
		237	# define ST_NOSUID 0
		238	#endif
		239	#ifndef ST_NODEV
		240	# define ST_NODEV 0
		241	#endif
		242	#ifndef ST_NOEXEC
		243	# define ST_NOEXEC 0
		244	#endif
		245	#ifndef ST_SYNCHRONOUS
		246	# define ST_SYNCHRONOUS 0
		247	#endif
		248	#ifndef ST_MANDLOCK
		249	# define ST_MANDLOCK 0
		250	#endif
		251	#ifndef ST_WRITE
		252	# define ST_WRITE 0
		253	#endif
		254	#ifndef ST_APPEND
		255	# define ST_APPEND 0
		256	#endif
		257	#ifndef ST_IMMUTABLE
		258	# define ST_IMMUTABLE 0
		259	#endif
		260	#ifndef ST_NOATIME
		261	# define ST_NOATIME 0
		262	#endif
		263	#ifndef ST_NODIRATIME
		264	# define ST_NODIRATIME 0
		265	#endif
		266	#ifndef ST_RELATIME
		267	# define ST_RELATIME 0
		268	#endif
		269
		270	#ifndef S_IFIFO
		271	# define S_IFIFO 0
		272	#endif
		273	#ifndef S_IFCHR
		274	# define S_IFCHR 0
		275	#endif
		276	#ifndef S_IFBLK
		277	# define S_IFBLK 0
		278	#endif
		279	#ifndef S_IFLNK
		280	# define S_IFLNK 0
		281	#endif
		282	#ifndef S_IFREG
		283	# define S_IFREG 0
		284	#endif
		285	#ifndef S_IFDIR
		286	# define S_IFDIR 0
		287	#endif
		288	#ifndef S_IFWHT
		289	# define S_IFWHT 0
		290	#endif
		291	#ifndef S_IFSOCK
		292	# define S_IFSOCK 0
		293	#endif
		294
		295	#ifndef MAP_ANONYMOUS
		296	# ifdef MAP_ANON
		297	# define MAP_ANONYMOUS MAP_ANON
		298	# else
		299	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		300	# endif
		301	#endif
		302	#ifndef MAP_HUGETLB
		303	# define MAP_HUGETLB 0
		304	#endif
		305	#ifndef MAP_LOCKED
		306	# define MAP_LOCKED 0
		307	#endif
		308	#ifndef MAP_NORESERVE
		309	# define MAP_NORESERVE 0
		310	#endif
		311	#ifndef MAP_POPULATE
		312	# define MAP_POPULATE 0
		313	#endif
		314	#ifndef MAP_NONBLOCK
		315	# define MAP_NONBLOCK 0
		316	#endif
		317
		318	#ifndef makedev
		319	# define makedev(maj,min) (((maj) << 8) | (min))
		320	#endif
		321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
		327
		328	#ifndef PAGESIZE
		329	# define PAGESIZE sysconf (_SC_PAGESIZE)
		330	#endif
109		331
110	enum {	332	enum {
111	REQ_QUIT,	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
112	REQ_OPEN, REQ_CLOSE,
113	REQ_READ, REQ_WRITE,
114	REQ_READAHEAD, REQ_SENDFILE,
115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
116	REQ_TRUNCATE, REQ_FTRUNCATE,
117	REQ_UTIME, REQ_FUTIME,
118	REQ_CHMOD, REQ_FCHMOD,
119	REQ_CHOWN, REQ_FCHOWN,
120	REQ_FSYNC, REQ_FDATASYNC,
121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
122	REQ_MKNOD, REQ_READDIR,
123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
124	REQ_GROUP, REQ_NOP,
125	REQ_BUSY,
126	};	334	};
127		335
128	#define AIO_REQ_KLASS "IO::AIO::REQ"
129	#define AIO_GRP_KLASS "IO::AIO::GRP"
130
131	typedef struct aio_cb
132	{
133	struct aio_cb *volatile next;
134
135	SV *callback;
136	SV *sv1, *sv2;
137	void *ptr1, *ptr2;
138	off_t offs;
139	size_t size;
140	ssize_t result;
141	double nv1, nv2;
142
143	STRLEN stroffset;
144	int type;
145	int int1, int2, int3;
146	int errorno;
147	mode_t mode; /* open */
148
149	unsigned char flags;
150	unsigned char pri;
151
152	SV *self; /* the perl counterpart of this request, if any */
153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
154	} aio_cb;
155
156	enum {
157	FLAG_CANCELLED = 0x01, /* request was cancelled */
158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
160	};
161
162	typedef aio_cb *aio_req;	336	typedef eio_req *aio_req;
163	typedef aio_cb *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
164		339
165	enum {	340	static SV *on_next_submit;
166	PRI_MIN = -4,	341	static int next_pri = EIO_PRI_DEFAULT;
167	PRI_MAX = 4,	342	static int max_outstanding;
168		343
169	DEFAULT_PRI = 0,	344	static s_epipe respipe;
170	PRI_BIAS = -PRI_MIN,
171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
172	};
173		345
174	#define AIO_TICKS ((1000000 + 1023) >> 10)
175
176	static unsigned int max_poll_time = 0;
177	static unsigned int max_poll_reqs = 0;
178
179	/* calculcate time difference in ~1/AIO_TICKS of a second */
180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
181	{
182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
184	}
185
186	static thread_t main_tid;
187	static int main_sig;
188	static int block_sig_level;
189
190	void block_sig ()
191	{
192	sigset_t ss;
193
194	if (block_sig_level++)
195	return;
196
197	if (!main_sig)
198	return;
199
200	sigemptyset (&ss);
201	sigaddset (&ss, main_sig);
202	pthread_sigmask (SIG_BLOCK, &ss, 0);
203	}
204
205	void unblock_sig ()
206	{
207	sigset_t ss;
208
209	if (--block_sig_level)
210	return;
211
212	if (!main_sig)
213	return;
214
215	sigemptyset (&ss);
216	sigaddset (&ss, main_sig);
217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
218	}
219
220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
221
222	static unsigned int started, idle, wanted;
223
224	/* worker threads management */
225	static mutex_t wrklock = X_MUTEX_INIT;
226
227	typedef struct worker {
228	/* locked by wrklock */
229	struct worker *prev, *next;
230
231	thread_t tid;
232
233	/* locked by reslock, reqlock or wrklock */
234	aio_req req; /* currently processed request */
235	void *dbuf;
236	DIR *dirp;
237	} worker;
238
239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
240
241	static void worker_clear (worker *wrk)
242	{
243	if (wrk->dirp)
244	{
245	closedir (wrk->dirp);
246	wrk->dirp = 0;
247	}
248
249	if (wrk->dbuf)
250	{
251	free (wrk->dbuf);
252	wrk->dbuf = 0;
253	}
254	}
255
256	static void worker_free (worker *wrk)
257	{
258	wrk->next->prev = wrk->prev;
259	wrk->prev->next = wrk->next;
260
261	free (wrk);
262	}
263
264	static volatile unsigned int nreqs, nready, npending;
265	static volatile unsigned int max_idle = 4;
266	static volatile unsigned int max_outstanding = 0xffffffff;
267	static int respipe [2];
268
269	static mutex_t reslock = X_MUTEX_INIT;
270	static mutex_t reqlock = X_MUTEX_INIT;
271	static cond_t reqwait = X_COND_INIT;
272
273	#if WORDACCESS_UNSAFE
274
275	static unsigned int get_nready ()
276	{
277	unsigned int retval;
278
279	X_LOCK (reqlock);
280	retval = nready;
281	X_UNLOCK (reqlock);
282
283	return retval;
284	}
285
286	static unsigned int get_npending ()
287	{
288	unsigned int retval;
289
290	X_LOCK (reslock);
291	retval = npending;
292	X_UNLOCK (reslock);
293
294	return retval;
295	}
296
297	static unsigned int get_nthreads ()
298	{
299	unsigned int retval;
300
301	X_LOCK (wrklock);
302	retval = started;
303	X_UNLOCK (wrklock);
304
305	return retval;
306	}
307
308	#else
309
310	# define get_nready() nready
311	# define get_npending() npending
312	# define get_nthreads() started
313
314	#endif
315
316	/*
317	* a somewhat faster data structure might be nice, but
318	* with 8 priorities this actually needs <20 insns
319	* per shift, the most expensive operation.
320	*/
321	typedef struct {
322	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
323	int size;
324	} reqq;
325
326	static reqq req_queue;
327	static reqq res_queue;
328
329	int reqq_push (reqq *q, aio_req req)
330	{
331	int pri = req->pri;
332	req->next = 0;
333
334	if (q->qe[pri])
335	{
336	q->qe[pri]->next = req;
337	q->qe[pri] = req;
338	}
339	else
340	q->qe[pri] = q->qs[pri] = req;
341
342	return q->size++;
343	}
344
345	aio_req reqq_shift (reqq *q)
346	{
347	int pri;
348
349	if (!q->size)
350	return 0;
351
352	--q->size;
353
354	for (pri = NUM_PRI; pri--; )
355	{
356	aio_req req = q->qs[pri];
357
358	if (req)
359	{
360	if (!(q->qs[pri] = req->next))
361	q->qe[pri] = 0;
362
363	return req;
364	}
365	}
366
367	abort ();
368	}
369
370	static int poll_cb ();
371	static int req_invoke (aio_req req);
372	static void req_destroy (aio_req req);	346	static void req_destroy (aio_req req);
373	static void req_cancel (aio_req req);	347	static void req_cancel (aio_req req);
374		348
		349	static void
		350	want_poll (void)
		351	{
		352	/* write a dummy byte to the pipe so fh becomes ready */
		353	s_epipe_signal (&respipe);
		354	}
		355
		356	static void
		357	done_poll (void)
		358	{
		359	/* read any signals sent by the worker threads */
		360	s_epipe_drain (&respipe);
		361	}
		362
375	/* must be called at most once */	363	/* must be called at most once */
376	static SV *req_sv (aio_req req, const char *klass)	364	static SV *
		365	req_sv (aio_req req, HV *stash)
377	{	366	{
378	if (!req->self)	367	if (!req->self)
379	{	368	{
380	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
381	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
382	}	371	}
383		372
384	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
385	}	374	}
386		375
387	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
		378	{
		379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
388	{	384	{
389	MAGIC *mg;	385	MAGIC *mg;
390		386
391	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	387	if (!SvROK (sv)
		388	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		389	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		390	&& SvSTASH (SvRV (sv)) != aio_req_stash
		391	&& !sv_derived_from (sv, "IO::AIO::REQ")))
392	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
393		393
394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
395		395
396	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
397	}	397	}
398		398
		399	static aio_wd
		400	SvAIO_WD (SV *sv)
		401	{
		402	if (!SvROK (sv)
		403	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		404	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		405	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		406
		407	return (aio_wd)(long)SvIVX (SvRV (sv));
		408	}
		409
		410	static void
399	static void aio_grp_feed (aio_req grp)	411	aio_grp_feed (aio_req grp)
400	{	412	{
401	block_sig ();	413	if (grp->sv2 && SvOK (grp->sv2))
402
403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
404	{	414	{
405	int old_len = grp->size;
406
407	if (grp->sv2 && SvOK (grp->sv2))
408	{
409	dSP;	415	dSP;
410		416
411	ENTER;	417	ENTER;
412	SAVETMPS;	418	SAVETMPS;
413	PUSHMARK (SP);	419	PUSHMARK (SP);
414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	420	XPUSHs (req_sv (grp, aio_grp_stash));
415	PUTBACK;	421	PUTBACK;
416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	422	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
417	SPAGAIN;	423	SPAGAIN;
418	FREETMPS;	424	FREETMPS;
419	LEAVE;	425	LEAVE;
420	}
421
422	/* stop if no progress has been made */
423	if (old_len == grp->size)
424	{
425	SvREFCNT_dec (grp->sv2);
426	grp->sv2 = 0;
427	break;
428	}
429	}	426	}
430
431	unblock_sig ();
432	}	427	}
433		428
434	static void aio_grp_dec (aio_req grp)	429	static void
		430	req_submit (eio_req *req)
435	{	431	{
436	--grp->size;	432	eio_submit (req);
437		433
438	/* call feeder, if applicable */	434	if (expect_false (on_next_submit))
439	aio_grp_feed (grp);
440
441	/* finish, if done */
442	if (!grp->size && grp->int1)
443	{	435	{
444	block_sig ();	436	dSP;
		437	SV *cb = sv_2mortal (on_next_submit);
445		438
446	if (!req_invoke (grp))	439	on_next_submit = 0;
447	{
448	req_destroy (grp);
449	unblock_sig ();
450	croak (0);
451	}
452		440
453	req_destroy (grp);	441	PUSHMARK (SP);
454	unblock_sig ();	442	PUTBACK;
		443	call_sv (cb, G_DISCARD | G_EVAL);
455	}	444	}
456	}	445	}
457		446
		447	static int
458	static int req_invoke (aio_req req)	448	req_invoke (eio_req *req)
459	{	449	{
460	dSP;
461
462	if (req->flags & FLAG_SV2_RO_OFF)	450	if (req->flags & FLAG_SV2_RO_OFF)
463	SvREADONLY_off (req->sv2);	451	SvREADONLY_off (req->sv2);
464		452
465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	453	if (!EIO_CANCELLED (req) && req->callback)
466	{	454	{
		455	dSP;
		456	static SV *sv_result_cache; /* caches the result integer SV */
		457	SV *sv_result;
		458
467	ENTER;	459	ENTER;
468	SAVETMPS;	460	SAVETMPS;
469	PUSHMARK (SP);	461	PUSHMARK (SP);
470	EXTEND (SP, 1);	462	EXTEND (SP, 1);
471		463
		464	/* do not recreate the result IV from scratch each time */
		465	if (expect_true (sv_result_cache))
		466	{
		467	sv_result = sv_result_cache; sv_result_cache = 0;
		468	SvIV_set (sv_result, req->result);
		469	SvIOK_only (sv_result);
		470	}
		471	else
		472	{
		473	sv_result = newSViv (req->result);
		474	SvREADONLY_on (sv_result);
		475	}
		476
472	switch (req->type)	477	switch (req->type)
473	{	478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
474	case REQ_READDIR:	483	case EIO_READDIR:
475	{	484	{
476	SV *rv = &PL_sv_undef;	485	SV *rv = &PL_sv_undef;
477		486
478	if (req->result >= 0)	487	if (req->result >= 0)
479	{	488	{
480	int i;	489	int i;
481	char *buf = req->ptr2;	490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
482	AV *av = newAV ();	492	AV *av = newAV ();
483		493
484	av_extend (av, req->result - 1);	494	av_extend (av, req->result - 1);
485		495
486	for (i = 0; i < req->result; ++i)	496	for (i = 0; i < req->result; ++i)
487	{	497	{
488	SV *sv = newSVpv (buf, 0);	498	if (req->int1 & EIO_READDIR_DENTS)
		499	{
		500	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
489		501
		502	if (req->int1 & EIO_READDIR_CUSTOM2)
		503	{
		504	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		505	AV *avent = newAV ();
		506
		507	av_extend (avent, 2);
		508
		509	if (!sv_type [ent->type])
		510	{
		511	sv_type [ent->type] = newSViv (ent->type);
		512	SvREADONLY_on (sv_type [ent->type]);
		513	}
		514
		515	av_store (avent, 0, namesv);
		516	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		517	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		518
		519	av_store (av, i, newRV_noinc ((SV *)avent));
		520	}
		521	else
490	av_store (av, i, sv);	522	av_store (av, i, namesv);
		523
		524	++ent;
		525	}
		526	else
		527	{
		528	SV *name = newSVpv (names, 0);
		529	av_store (av, i, name);
491	buf += SvCUR (sv) + 1;	530	names += SvCUR (name) + 1;
		531	}
492	}	532	}
493		533
494	rv = sv_2mortal (newRV_noinc ((SV *)av));	534	rv = sv_2mortal (newRV_noinc ((SV *)av));
495	}	535	}
496		536
497	PUSHs (rv);	537	PUSHs (rv);
		538
		539	if (req->int1 & EIO_READDIR_CUSTOM1)
		540	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
498	}	541	}
499	break;	542	break;
500		543
501	case REQ_OPEN:	544	case EIO_OPEN:
502	{	545	{
503	/* convert fd to fh */	546	/* convert fd to fh */
504	SV *fh;	547	SV *fh = &PL_sv_undef;
505		548
506	PUSHs (sv_2mortal (newSViv (req->result)));	549	if (req->result >= 0)
507	PUTBACK;	550	{
508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	551	GV *gv = (GV *)sv_newmortal ();
509	SPAGAIN;	552	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		553	char sym [64];
		554	int symlen;
		555
		556	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		557	gv_init (gv, aio_stash, sym, symlen, 0);
510		558
511	fh = POPs;	559	symlen = snprintf (
512	PUSHMARK (SP);	560	sym,
		561	sizeof (sym),
		562	"%s&=%d",
		563	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		564	(int)req->result
		565	);
		566
		567	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		568	fh = (SV *)gv;
		569	}
		570
513	XPUSHs (fh);	571	PUSHs (fh);
514	}	572	}
515	break;	573	break;
516		574
		575	case EIO_STATVFS:
		576	case EIO_FSTATVFS:
		577	{
		578	SV *rv = &PL_sv_undef;
		579
		580	#ifndef _WIN32
		581	if (req->result >= 0)
		582	{
		583	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		584	HV *hv = newHV ();
		585
		586	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		587
		588	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		589	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		590	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		591	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		592	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		593	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		594	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		595	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		596	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		597	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		598	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		599	}
		600	#endif
		601
		602	PUSHs (rv);
		603	}
		604
		605	break;
		606
517	case REQ_GROUP:	607	case EIO_GROUP:
518	req->int1 = 2; /* mark group as finished */	608	req->int1 = 2; /* mark group as finished */
519		609
520	if (req->sv1)	610	if (req->sv1)
521	{	611	{
522	int i;	612	int i;
…		…
526	for (i = 0; i <= AvFILL (av); ++i)	616	for (i = 0; i <= AvFILL (av); ++i)
527	PUSHs (*av_fetch (av, i, 0));	617	PUSHs (*av_fetch (av, i, 0));
528	}	618	}
529	break;	619	break;
530		620
531	case REQ_NOP:	621	case EIO_NOP:
532	case REQ_BUSY:	622	case EIO_BUSY:
533	break;	623	break;
534		624
535	case REQ_READLINK:	625	case EIO_READLINK:
		626	case EIO_REALPATH:
536	if (req->result > 0)	627	if (req->result > 0)
537	{	628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
538	SvCUR_set (req->sv2, req->result);
539	*SvEND (req->sv2) = 0;
540	PUSHs (req->sv2);
541	}
542	break;	629	break;
543		630
544	case REQ_STAT:	631	case EIO_STAT:
545	case REQ_LSTAT:	632	case EIO_LSTAT:
546	case REQ_FSTAT:	633	case EIO_FSTAT:
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
548	PL_laststatval = req->result;	636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
549	PL_statcache = *(Stat_t *)(req->ptr2);	638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
550	PUSHs (sv_2mortal (newSViv (req->result)));	639
		640	PUSHs (sv_result);
551	break;	641	break;
552		642
553	case REQ_READ:	643	case EIO_READ:
		644	{
554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	645	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
555	*SvEND (req->sv2) = 0;	646	*SvEND (req->sv2) = 0;
556	PUSHs (sv_2mortal (newSViv (req->result)));	647	SvPOK_only (req->sv2);
		648	SvSETMAGIC (req->sv2);
		649	PUSHs (sv_result);
		650	}
557	break;	651	break;
558		652
		653	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		654	if (req->result > 0)
		655	SvIV_set (sv_result, 0);
		656	/* FALLTHROUGH */
		657
559	default:	658	default:
560	PUSHs (sv_2mortal (newSViv (req->result)));	659	PUSHs (sv_result);
561	break;	660	break;
562	}	661	}
563		662
564	errno = req->errorno;	663	errno = req->errorno;
565		664
566	PUTBACK;	665	PUTBACK;
567	call_sv (req->callback, G_VOID | G_EVAL);	666	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
568	SPAGAIN;	667	SPAGAIN;
		668
		669	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		670	SvREFCNT_dec (sv_result);
		671	else
		672	sv_result_cache = sv_result;
569		673
570	FREETMPS;	674	FREETMPS;
571	LEAVE;	675	LEAVE;
		676
		677	PUTBACK;
572	}	678	}
573		679
574	if (req->grp)
575	{
576	aio_req grp = req->grp;
577
578	/* unlink request */
579	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
580	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
581
582	if (grp->grp_first == req)
583	grp->grp_first = req->grp_next;
584
585	aio_grp_dec (grp);
586	}
587
588	return !SvTRUE (ERRSV);	680	return !!SvTRUE (ERRSV);
589	}	681	}
590		682
		683	static void
591	static void req_destroy (aio_req req)	684	req_destroy (aio_req req)
592	{	685	{
593	if (req->self)	686	if (req->self)
594	{	687	{
595	sv_unmagic (req->self, PERL_MAGIC_ext);	688	sv_unmagic (req->self, PERL_MAGIC_ext);
596	SvREFCNT_dec (req->self);	689	SvREFCNT_dec (req->self);
597	}	690	}
598		691
599	SvREFCNT_dec (req->sv1);	692	SvREFCNT_dec (req->sv1);
600	SvREFCNT_dec (req->sv2);	693	SvREFCNT_dec (req->sv2);
		694	SvREFCNT_dec (req->sv3);
		695	SvREFCNT_dec (req->sv4);
601	SvREFCNT_dec (req->callback);	696	SvREFCNT_dec (req->callback);
602		697
603	if (req->flags & FLAG_PTR2_FREE)
604	free (req->ptr2);
605
606	Safefree (req);	698	free (req);
607	}	699	}
608		700
		701	static void
609	static void req_cancel_subs (aio_req grp)	702	req_cancel_subs (aio_req grp)
610	{	703	{
611	aio_req sub;
612
613	if (grp->type != REQ_GROUP)	704	if (grp->type != EIO_GROUP)
614	return;	705	return;
615		706
616	SvREFCNT_dec (grp->sv2);	707	SvREFCNT_dec (grp->sv2);
617	grp->sv2 = 0;	708	grp->sv2 = 0;
618		709
619	for (sub = grp->grp_first; sub; sub = sub->grp_next)	710	eio_grp_cancel (grp);
620	req_cancel (sub);
621	}	711	}
622		712
623	static void req_cancel (aio_req req)	713	static void ecb_cold
		714	create_respipe (void)
624	{	715	{
625	req->flags |= FLAG_CANCELLED;	716	if (s_epipe_renew (&respipe))
626		717	croak ("IO::AIO: unable to initialize result pipe");
627	req_cancel_subs (req);
628	}	718	}
629		719
630	X_THREAD_PROC (aio_proc);	720	static void
631		721	poll_wait (void)
632	static void start_thread (void)
633	{	722	{
634	worker *wrk = calloc (1, sizeof (worker));
635
636	if (!wrk)
637	croak ("unable to allocate worker thread data");
638
639	X_LOCK (wrklock);
640
641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
642	{
643	wrk->prev = &wrk_first;
644	wrk->next = wrk_first.next;
645	wrk_first.next->prev = wrk;
646	wrk_first.next = wrk;
647	++started;
648	}
649	else
650	free (wrk);
651
652	X_UNLOCK (wrklock);
653	}
654
655	static void maybe_start_thread ()
656	{
657	if (get_nthreads () >= wanted)
658	return;
659
660	/* todo: maybe use idle here, but might be less exact */
661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
662	return;
663
664	start_thread ();
665	}
666
667	static void req_send (aio_req req)
668	{
669	block_sig ();
670
671	++nreqs;
672
673	X_LOCK (reqlock);
674	++nready;
675	reqq_push (&req_queue, req);
676	X_COND_SIGNAL (reqwait);
677	X_UNLOCK (reqlock);
678
679	unblock_sig ();
680
681	maybe_start_thread ();
682	}
683
684	static void end_thread (void)
685	{
686	aio_req req;
687
688	Newz (0, req, 1, aio_cb);
689
690	req->type = REQ_QUIT;
691	req->pri = PRI_MAX + PRI_BIAS;
692
693	X_LOCK (reqlock);
694	reqq_push (&req_queue, req);
695	X_COND_SIGNAL (reqwait);
696	X_UNLOCK (reqlock);
697
698	X_LOCK (wrklock);
699	--started;
700	X_UNLOCK (wrklock);
701	}
702
703	static void set_max_idle (int nthreads)
704	{
705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
706	max_idle = nthreads <= 0 ? 1 : nthreads;
707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
708	}
709
710	static void min_parallel (int nthreads)
711	{
712	if (wanted < nthreads)
713	wanted = nthreads;
714	}
715
716	static void max_parallel (int nthreads)
717	{
718	if (wanted > nthreads)
719	wanted = nthreads;
720
721	while (started > wanted)
722	end_thread ();
723	}
724
725	static void poll_wait ()
726	{
727	fd_set rfd;
728
729	while (nreqs)	723	while (eio_nreqs ())
730	{	724	{
731	int size;	725	int size;
732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	726
		727	X_LOCK (reslock);
733	size = res_queue.size;	728	size = res_queue.size;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	729	X_UNLOCK (reslock);
735		730
736	if (size)	731	if (size)
737	return;	732	return;
738		733
739	maybe_start_thread ();	734	etp_maybe_start_thread ();
740		735
741	FD_ZERO(&rfd);	736	s_epipe_wait (&respipe);
742	FD_SET(respipe [0], &rfd);
743
744	select (respipe [0] + 1, &rfd, 0, 0, 0);
745	}	737	}
746	}	738	}
747		739
748	static int poll_cb ()	740	static int
		741	poll_cb (void)
749	{	742	{
750	dSP;
751	int count = 0;
752	int maxreqs = max_poll_reqs;
753	int do_croak = 0;
754	struct timeval tv_start, tv_now;
755	aio_req req;
756
757	if (max_poll_time)
758	gettimeofday (&tv_start, 0);
759
760	block_sig ();
761
762	for (;;)	743	for (;;)
763	{	744	{
764	for (;;)	745	int res = eio_poll ();
		746
		747	if (res > 0)
		748	croak (0);
		749
		750	if (!max_outstanding || max_outstanding > eio_nreqs ())
		751	return res;
		752
		753	poll_wait ();
		754	}
		755	}
		756
		757	static void ecb_cold
		758	reinit (void)
		759	{
		760	create_respipe ();
		761
		762	if (eio_init (want_poll, done_poll) < 0)
		763	croak ("IO::AIO: unable to initialise eio library");
		764	}
		765
		766	/*****************************************************************************/
		767
		768	#if !_POSIX_MAPPED_FILES
		769	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		770	# define munmap(addr,length) (errno = ENOSYS, -1)
		771	#endif
		772
		773	#if !_POSIX_MEMORY_PROTECTION
		774	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		775	# define PROT_NONE 0
		776	# define PROT_WRITE 0
		777	# define MAP_PRIVATE 0
		778	# define MAP_SHARED 0
		779	# define MAP_FIXED 0
		780	#endif
		781
		782	#define MMAP_MAGIC PERL_MAGIC_ext
		783
		784	static int ecb_cold
		785	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		786	{
		787	int old_errno = errno;
		788	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		789	errno = old_errno;
		790
		791	mg->mg_obj = 0; /* just in case */
		792
		793	SvREADONLY_off (sv);
		794
		795	if (SvPVX (sv) != mg->mg_ptr)
		796	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		797
		798	SvCUR_set (sv, 0);
		799	SvPVX (sv) = 0;
		800	SvOK_off (sv);
		801
		802	return 0;
		803	}
		804
		805	static MGVTBL mmap_vtbl = {
		806	0, 0, 0, 0, mmap_free
		807	};
		808
		809	/*****************************************************************************/
		810
		811	static SV *
		812	get_cb (SV *cb_sv)
		813	{
		814	SvGETMAGIC (cb_sv);
		815	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		816	}
		817
		818	static aio_req ecb_noinline
		819	dreq (SV *callback)
		820	{
		821	SV *cb_cv;
		822	aio_req req;
		823	int req_pri = next_pri;
		824	next_pri = EIO_PRI_DEFAULT;
		825
		826	cb_cv = get_cb (callback);
		827
		828	req = calloc (sizeof (*req), 1);
		829	if (!req)
		830	croak ("out of memory during eio_req allocation");
		831
		832	req->callback = SvREFCNT_inc (cb_cv);
		833	req->pri = req_pri;
		834
		835	return req;
		836	}
		837
		838	#define dREQ \
		839	aio_req req = dreq (callback); \
		840
		841	#define REQ_SEND \
		842	PUTBACK; \
		843	req_submit (req); \
		844	SPAGAIN; \
		845	\
		846	if (GIMME_V != G_VOID) \
		847	XPUSHs (req_sv (req, aio_req_stash));
		848
		849	ecb_inline void
		850	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		851	{
		852	if (expect_false (SvROK (path)))
		853	{
		854	SV *rv = SvRV (path);
		855	SV *wdob;
		856
		857	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
765	{	858	{
766	maybe_start_thread ();	859	path = AvARRAY (rv)[1];
		860	wdob = AvARRAY (rv)[0];
767		861
768	X_LOCK (reslock);	862	if (SvOK (wdob))
769	req = reqq_shift (&res_queue);
770
771	if (req)
772	{	863	{
773	--npending;	864	*wd = SvAIO_WD (wdob);
774		865	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
775	if (!res_queue.size)
776	{
777	/* read any signals sent by the worker threads */
778	char buf [4];
779	while (read (respipe [0], buf, 4) == 4)
780	;
781	}
782	}
783
784	X_UNLOCK (reslock);
785
786	if (!req)
787	break;
788
789	--nreqs;
790
791	if (req->type == REQ_GROUP && req->size)
792	{
793	req->int1 = 1; /* mark request as delayed */
794	continue;
795	}	866	}
796	else	867	else
797	{	868	*wd = EIO_INVALID_WD;
798	if (!req_invoke (req))
799	{
800	req_destroy (req);
801	unblock_sig ();
802	croak (0);
803	}
804
805	count++;
806	}
807
808	req_destroy (req);
809
810	if (maxreqs && !--maxreqs)
811	break;
812
813	if (max_poll_time)
814	{
815	gettimeofday (&tv_now, 0);
816
817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
818	break;
819	}
820	}	869	}
		870	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		871	{
		872	*wd = (aio_wd)(long)SvIVX (rv);
		873	*wdsv = SvREFCNT_inc_NN (rv);
		874	*ptr = ".";
		875	return; /* path set to "." */
		876	}
		877	else
		878	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		879	}
821		880
822	if (nreqs <= max_outstanding)	881	*pathsv = newSVsv (path);
		882	*ptr = SvPVbyte_nolen (*pathsv);
		883	}
		884
		885	static void ecb_noinline
		886	req_set_path1 (aio_req req, SV *path)
		887	{
		888	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		889	}
		890
		891	static void ecb_noinline
		892	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		893	{
		894	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		895
		896	switch (SvTYPE (rv))
		897	{
		898	case SVt_PVIO:
		899	case SVt_PVLV:
		900	case SVt_PVGV:
		901	req->type = type_fh;
		902	req->sv1 = newSVsv (fh_or_path);
		903	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
823	break;	904	break;
824		905
825	poll_wait ();	906	default:
826		907	req->type = type_path;
827	++maxreqs;	908	req_set_path1 (req, fh_or_path);
		909	break;
828	}	910	}
829
830	unblock_sig ();
831	return count;
832	}	911	}
833		912
834	/*****************************************************************************/	913	XS(boot_IO__AIO) ecb_cold;
835	/* work around various missing functions */
836		914
837	#if !HAVE_PREADWRITE
838	# define pread aio_pread
839	# define pwrite aio_pwrite
840
841	/*
842	* make our pread/pwrite safe against themselves, but not against
843	* normal read/write by using a mutex. slows down execution a lot,
844	* but that's your problem, not mine.
845	*/
846	static mutex_t preadwritelock = X_MUTEX_INIT;
847
848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
849	{
850	ssize_t res;
851	off_t ooffset;
852
853	X_LOCK (preadwritelock);
854	ooffset = lseek (fd, 0, SEEK_CUR);
855	lseek (fd, offset, SEEK_SET);
856	res = read (fd, buf, count);
857	lseek (fd, ooffset, SEEK_SET);
858	X_UNLOCK (preadwritelock);
859
860	return res;
861	}
862
863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
864	{
865	ssize_t res;
866	off_t ooffset;
867
868	X_LOCK (preadwritelock);
869	ooffset = lseek (fd, 0, SEEK_CUR);
870	lseek (fd, offset, SEEK_SET);
871	res = write (fd, buf, count);
872	lseek (fd, offset, SEEK_SET);
873	X_UNLOCK (preadwritelock);
874
875	return res;
876	}
877	#endif
878
879	#ifndef HAVE_FUTIMES
880
881	# define utimes(path,times) aio_utimes (path, times)
882	# define futimes(fd,times) aio_futimes (fd, times)
883
884	int aio_utimes (const char *filename, const struct timeval times[2])
885	{
886	if (times)
887	{
888	struct utimbuf buf;
889
890	buf.actime = times[0].tv_sec;
891	buf.modtime = times[1].tv_sec;
892
893	return utime (filename, &buf);
894	}
895	else
896	return utime (filename, 0);
897	}
898
899	int aio_futimes (int fd, const struct timeval tv[2])
900	{
901	errno = ENOSYS;
902	return -1;
903	}
904
905	#endif
906
907	#if !HAVE_FDATASYNC
908	# define fdatasync fsync
909	#endif
910
911	#if !HAVE_READAHEAD
912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
913
914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
915	{
916	size_t todo = count;
917	dBUF;
918
919	while (todo > 0)
920	{
921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
922
923	pread (fd, aio_buf, len, offset);
924	offset += len;
925	todo -= len;
926	}
927
928	errno = 0;
929	return count;
930	}
931
932	#endif
933
934	#if !HAVE_READDIR_R
935	# define readdir_r aio_readdir_r
936
937	static mutex_t readdirlock = X_MUTEX_INIT;
938
939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
940	{
941	X_DIRENT *e;
942	int errorno;
943
944	X_LOCK (readdirlock);
945
946	e = readdir (dirp);
947	errorno = errno;
948
949	if (e)
950	{
951	*res = ent;
952	strcpy (ent->d_name, e->d_name);
953	}
954	else
955	*res = 0;
956
957	X_UNLOCK (readdirlock);
958
959	errno = errorno;
960	return e ? 0 : -1;
961	}
962	#endif
963
964	/* sendfile always needs emulation */
965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
966	{
967	ssize_t res;
968
969	if (!count)
970	return 0;
971
972	#if HAVE_SENDFILE
973	# if __linux
974	res = sendfile (ofd, ifd, &offset, count);
975
976	# elif __freebsd
977	/*
978	* Of course, the freebsd sendfile is a dire hack with no thoughts
979	* wasted on making it similar to other I/O functions.
980	*/
981	{
982	off_t sbytes;
983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
984
985	if (res < 0 && sbytes)
986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
987	res = sbytes;
988	}
989
990	# elif __hpux
991	res = sendfile (ofd, ifd, offset, count, 0, 0);
992
993	# elif __solaris
994	{
995	struct sendfilevec vec;
996	size_t sbytes;
997
998	vec.sfv_fd = ifd;
999	vec.sfv_flag = 0;
1000	vec.sfv_off = offset;
1001	vec.sfv_len = count;
1002
1003	res = sendfilev (ofd, &vec, 1, &sbytes);
1004
1005	if (res < 0 && sbytes)
1006	res = sbytes;
1007	}
1008
1009	# endif
1010	#else
1011	res = -1;
1012	errno = ENOSYS;
1013	#endif
1014
1015	if (res < 0
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1017	#if __solaris
1018	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1019	#endif
1020	)
1021	)
1022	{
1023	/* emulate sendfile. this is a major pain in the ass */
1024	dBUF;
1025
1026	res = 0;
1027
1028	while (count)
1029	{
1030	ssize_t cnt;
1031
1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1033
1034	if (cnt <= 0)
1035	{
1036	if (cnt && !res) res = -1;
1037	break;
1038	}
1039
1040	cnt = write (ofd, aio_buf, cnt);
1041
1042	if (cnt <= 0)
1043	{
1044	if (cnt && !res) res = -1;
1045	break;
1046	}
1047
1048	offset += cnt;
1049	res += cnt;
1050	count -= cnt;
1051	}
1052	}
1053
1054	return res;
1055	}
1056
1057	/* read a full directory */
1058	static void scandir_ (aio_req req, worker *self)
1059	{
1060	DIR *dirp;
1061	union
1062	{
1063	X_DIRENT d;
1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1065	} *u;
1066	X_DIRENT *entp;
1067	char *name, *names;
1068	int memlen = 4096;
1069	int memofs = 0;
1070	int res = 0;
1071
1072	X_LOCK (wrklock);
1073	self->dirp = dirp = opendir (req->ptr1);
1074	self->dbuf = u = malloc (sizeof (*u));
1075	req->flags |= FLAG_PTR2_FREE;
1076	req->ptr2 = names = malloc (memlen);
1077	X_UNLOCK (wrklock);
1078
1079	if (dirp && u && names)
1080	for (;;)
1081	{
1082	errno = 0;
1083	readdir_r (dirp, &u->d, &entp);
1084
1085	if (!entp)
1086	break;
1087
1088	name = entp->d_name;
1089
1090	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1091	{
1092	int len = strlen (name) + 1;
1093
1094	res++;
1095
1096	while (memofs + len > memlen)
1097	{
1098	memlen *= 2;
1099	X_LOCK (wrklock);
1100	req->ptr2 = names = realloc (names, memlen);
1101	X_UNLOCK (wrklock);
1102
1103	if (!names)
1104	break;
1105	}
1106
1107	memcpy (names + memofs, name, len);
1108	memofs += len;
1109	}
1110	}
1111
1112	if (errno)
1113	res = -1;
1114
1115	req->result = res;
1116	}
1117
1118	/*****************************************************************************/
1119
1120	X_THREAD_PROC (aio_proc)
1121	{
1122	{//D
1123	aio_req req;
1124	struct timespec ts;
1125	worker *self = (worker *)thr_arg;
1126
1127	/* try to distribute timeouts somewhat randomly */
1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1129
1130	for (;;)
1131	{
1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1133
1134	X_LOCK (reqlock);
1135
1136	for (;;)
1137	{
1138	self->req = req = reqq_shift (&req_queue);
1139
1140	if (req)
1141	break;
1142
1143	++idle;
1144
1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1146	== ETIMEDOUT)
1147	{
1148	if (idle > max_idle)
1149	{
1150	--idle;
1151	X_UNLOCK (reqlock);
1152	X_LOCK (wrklock);
1153	--started;
1154	X_UNLOCK (wrklock);
1155	goto quit;
1156	}
1157
1158	/* we are allowed to idle, so do so without any timeout */
1159	X_COND_WAIT (reqwait, reqlock);
1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1161	}
1162
1163	--idle;
1164	}
1165
1166	--nready;
1167
1168	X_UNLOCK (reqlock);
1169
1170	errno = 0; /* strictly unnecessary */
1171
1172	if (!(req->flags & FLAG_CANCELLED))
1173	switch (req->type)
1174	{
1175	case REQ_READ: req->result = req->offs >= 0
1176	? pread (req->int1, req->ptr1, req->size, req->offs)
1177	: read (req->int1, req->ptr1, req->size); break;
1178	case REQ_WRITE: req->result = req->offs >= 0
1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1180	: write (req->int1, req->ptr1, req->size); break;
1181
1182	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1184
1185	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1186	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1188
1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1195
1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1197	case REQ_CLOSE: req->result = close (req->int1); break;
1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1206
1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
1209	case REQ_READDIR: scandir_ (req, self); break;
1210
1211	case REQ_BUSY:
1212	#ifdef _WIN32
1213	Sleep (req->nv1 * 1000.);
1214	#else
1215	{
1216	struct timeval tv;
1217
1218	tv.tv_sec = req->nv1;
1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1220
1221	req->result = select (0, 0, 0, 0, &tv);
1222	}
1223	#endif
1224	break;
1225
1226	case REQ_UTIME:
1227	case REQ_FUTIME:
1228	{
1229	struct timeval tv[2];
1230	struct timeval *times;
1231
1232	if (req->nv1 != -1. || req->nv2 != -1.)
1233	{
1234	tv[0].tv_sec = req->nv1;
1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1236	tv[1].tv_sec = req->nv2;
1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1238
1239	times = tv;
1240	}
1241	else
1242	times = 0;
1243
1244
1245	req->result = req->type == REQ_FUTIME
1246	? futimes (req->int1, times)
1247	: utimes (req->ptr1, times);
1248	}
1249
1250	case REQ_GROUP:
1251	case REQ_NOP:
1252	break;
1253
1254	case REQ_QUIT:
1255	goto quit;
1256
1257	default:
1258	req->result = -1;
1259	break;
1260	}
1261
1262	req->errorno = errno;
1263
1264	X_LOCK (reslock);
1265
1266	++npending;
1267
1268	if (!reqq_push (&res_queue, req))
1269	{
1270	/* write a dummy byte to the pipe so fh becomes ready */
1271	write (respipe [1], &respipe, 1);
1272
1273	/* optionally signal the main thread asynchronously */
1274	if (main_sig)
1275	pthread_kill (main_tid, main_sig);
1276	}
1277
1278	self->req = 0;
1279	worker_clear (self);
1280
1281	X_UNLOCK (reslock);
1282	}
1283
1284	quit:
1285	X_LOCK (wrklock);
1286	worker_free (self);
1287	X_UNLOCK (wrklock);
1288
1289	return 0;
1290	}//D
1291	}
1292
1293	/*****************************************************************************/
1294
1295	static void atfork_prepare (void)
1296	{
1297	X_LOCK (wrklock);
1298	X_LOCK (reqlock);
1299	X_LOCK (reslock);
1300	#if !HAVE_PREADWRITE
1301	X_LOCK (preadwritelock);
1302	#endif
1303	#if !HAVE_READDIR_R
1304	X_LOCK (readdirlock);
1305	#endif
1306	}
1307
1308	static void atfork_parent (void)
1309	{
1310	#if !HAVE_READDIR_R
1311	X_UNLOCK (readdirlock);
1312	#endif
1313	#if !HAVE_PREADWRITE
1314	X_UNLOCK (preadwritelock);
1315	#endif
1316	X_UNLOCK (reslock);
1317	X_UNLOCK (reqlock);
1318	X_UNLOCK (wrklock);
1319	}
1320
1321	static void atfork_child (void)
1322	{
1323	aio_req prv;
1324
1325	while (prv = reqq_shift (&req_queue))
1326	req_destroy (prv);
1327
1328	while (prv = reqq_shift (&res_queue))
1329	req_destroy (prv);
1330
1331	while (wrk_first.next != &wrk_first)
1332	{
1333	worker *wrk = wrk_first.next;
1334
1335	if (wrk->req)
1336	req_destroy (wrk->req);
1337
1338	worker_clear (wrk);
1339	worker_free (wrk);
1340	}
1341
1342	started = 0;
1343	idle = 0;
1344	nreqs = 0;
1345	nready = 0;
1346	npending = 0;
1347
1348	close (respipe [0]);
1349	close (respipe [1]);
1350
1351	if (!create_pipe (respipe))
1352	croak ("cannot set result pipe to nonblocking mode");
1353
1354	atfork_parent ();
1355	}
1356
1357	#define dREQ \
1358	aio_req req; \
1359	int req_pri = next_pri; \
1360	next_pri = DEFAULT_PRI + PRI_BIAS; \
1361	\
1362	if (SvOK (callback) && !SvROK (callback)) \
1363	croak ("callback must be undef or of reference type"); \
1364	\
1365	Newz (0, req, 1, aio_cb); \
1366	if (!req) \
1367	croak ("out of memory during aio_req allocation"); \
1368	\
1369	req->callback = newSVsv (callback); \
1370	req->pri = req_pri
1371
1372	#define REQ_SEND \
1373	req_send (req); \
1374	\
1375	if (GIMME_V != G_VOID) \
1376	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1377
1378	MODULE = IO::AIO PACKAGE = IO::AIO	915	MODULE = IO::AIO PACKAGE = IO::AIO
1379		916
1380	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
1381		918
1382	BOOT:	919	BOOT:
1383	{	920	{
		921	static const struct {
		922	const char *name;
		923	IV iv;
		924	} *civ, const_iv[] = {
		925	# define const_niv(name, value) { # name, (IV) value },
		926	# define const_iv(name) { # name, (IV) name },
		927	# define const_eio(name) { # name, (IV) EIO_ ## name },
		928	const_iv (EXDEV)
		929	const_iv (ENOSYS)
		930	const_iv (O_RDONLY)
		931	const_iv (O_WRONLY)
		932	const_iv (O_RDWR)
		933	const_iv (O_CREAT)
		934	const_iv (O_TRUNC)
		935	const_iv (O_EXCL)
		936	const_iv (O_APPEND)
		937
		938	const_iv (O_ASYNC)
		939	const_iv (O_DIRECT)
		940	const_iv (O_NOATIME)
		941
		942	const_iv (O_CLOEXEC)
		943	const_iv (O_NOCTTY)
		944	const_iv (O_NOFOLLOW)
		945	const_iv (O_NONBLOCK)
		946	const_iv (O_EXEC)
		947	const_iv (O_SEARCH)
		948	const_iv (O_DIRECTORY)
		949	const_iv (O_DSYNC)
		950	const_iv (O_RSYNC)
		951	const_iv (O_SYNC)
		952	const_iv (O_TTY_INIT)
		953
		954	const_iv (S_IFIFO)
		955	const_iv (S_IFCHR)
		956	const_iv (S_IFBLK)
		957	const_iv (S_IFLNK)
		958	const_iv (S_IFREG)
		959	const_iv (S_IFDIR)
		960	const_iv (S_IFWHT)
		961	const_iv (S_IFSOCK)
		962	const_iv (S_IFMT)
		963
		964	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		965	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		966	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		967	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		968	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		969	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		970
		971	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		972	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		973	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		974	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		975	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		976
		977	const_iv (ST_RDONLY)
		978	const_iv (ST_NOSUID)
		979	const_iv (ST_NODEV)
		980	const_iv (ST_NOEXEC)
		981	const_iv (ST_SYNCHRONOUS)
		982	const_iv (ST_MANDLOCK)
		983	const_iv (ST_WRITE)
		984	const_iv (ST_APPEND)
		985	const_iv (ST_IMMUTABLE)
		986	const_iv (ST_NOATIME)
		987	const_iv (ST_NODIRATIME)
		988	const_iv (ST_RELATIME)
		989
		990	const_iv (PROT_NONE)
		991	const_iv (PROT_EXEC)
		992	const_iv (PROT_READ)
		993	const_iv (PROT_WRITE)
		994
		995	/*const_iv (MAP_FIXED)*/
		996	const_iv (MAP_PRIVATE)
		997	const_iv (MAP_SHARED)
		998	const_iv (MAP_ANONYMOUS)
		999
		1000	/* linuxish */
		1001	const_iv (MAP_HUGETLB)
		1002	const_iv (MAP_LOCKED)
		1003	const_iv (MAP_NORESERVE)
		1004	const_iv (MAP_POPULATE)
		1005	const_iv (MAP_NONBLOCK)
		1006
		1007	const_eio (MCL_FUTURE)
		1008	const_eio (MCL_CURRENT)
		1009
		1010	const_eio (MS_ASYNC)
		1011	const_eio (MS_INVALIDATE)
		1012	const_eio (MS_SYNC)
		1013
		1014	const_eio (MT_MODIFY)
		1015
		1016	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1017	const_eio (SYNC_FILE_RANGE_WRITE)
		1018	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1019
		1020	const_eio (FALLOC_FL_KEEP_SIZE)
		1021
		1022	const_eio (READDIR_DENTS)
		1023	const_eio (READDIR_DIRS_FIRST)
		1024	const_eio (READDIR_STAT_ORDER)
		1025	const_eio (READDIR_FOUND_UNKNOWN)
		1026
		1027	const_eio (DT_UNKNOWN)
		1028	const_eio (DT_FIFO)
		1029	const_eio (DT_CHR)
		1030	const_eio (DT_DIR)
		1031	const_eio (DT_BLK)
		1032	const_eio (DT_REG)
		1033	const_eio (DT_LNK)
		1034	const_eio (DT_SOCK)
		1035	const_eio (DT_WHT)
		1036	};
		1037
1384	HV *stash = gv_stashpv ("IO::AIO", 1);	1038	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1039	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1040	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1041	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1385		1042
1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1043	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1044	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1391	#ifdef _WIN32
1392	X_MUTEX_CHECK (wrklock);
1393	X_MUTEX_CHECK (reslock);
1394	X_MUTEX_CHECK (reqlock);
1395	X_MUTEX_CHECK (reqwait);
1396	X_MUTEX_CHECK (preadwritelock);
1397	X_MUTEX_CHECK (readdirlock);
1398	#else
1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1401	#endif
1402		1045
1403	if (!create_pipe (respipe))	1046	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1404	croak ("cannot set result pipe to nonblocking mode");
1405		1047
1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	1048	reinit ();
1407	}	1049	}
1408		1050
1409	void	1051	void
		1052	reinit ()
		1053	PROTOTYPE:
		1054
		1055	void
1410	max_poll_reqs (int nreqs)	1056	max_poll_reqs (unsigned int nreqs)
1411	PROTOTYPE: $	1057	PROTOTYPE: $
1412	CODE:	1058	CODE:
1413	max_poll_reqs = nreqs;	1059	eio_set_max_poll_reqs (nreqs);
1414		1060
1415	void	1061	void
1416	max_poll_time (double nseconds)	1062	max_poll_time (double nseconds)
1417	PROTOTYPE: $	1063	PROTOTYPE: $
1418	CODE:	1064	CODE:
1419	max_poll_time = nseconds * AIO_TICKS;	1065	eio_set_max_poll_time (nseconds);
1420		1066
1421	void	1067	void
1422	min_parallel (int nthreads)	1068	min_parallel (unsigned int nthreads)
1423	PROTOTYPE: $
1424
1425	void
1426	max_parallel (int nthreads)
1427	PROTOTYPE: $
1428
1429	void
1430	max_idle (int nthreads)
1431	PROTOTYPE: $	1069	PROTOTYPE: $
1432	CODE:	1070	CODE:
1433	set_max_idle (nthreads);	1071	eio_set_min_parallel (nthreads);
1434		1072
1435	int	1073	void
1436	max_outstanding (int maxreqs)	1074	max_parallel (unsigned int nthreads)
1437	PROTOTYPE: $	1075	PROTOTYPE: $
1438	CODE:	1076	CODE:
1439	RETVAL = max_outstanding;	1077	eio_set_max_parallel (nthreads);
		1078
		1079	void
		1080	max_idle (unsigned int nthreads)
		1081	PROTOTYPE: $
		1082	CODE:
		1083	eio_set_max_idle (nthreads);
		1084
		1085	void
		1086	idle_timeout (unsigned int seconds)
		1087	PROTOTYPE: $
		1088	CODE:
		1089	eio_set_idle_timeout (seconds);
		1090
		1091	void
		1092	max_outstanding (unsigned int maxreqs)
		1093	PROTOTYPE: $
		1094	CODE:
1440	max_outstanding = maxreqs;	1095	max_outstanding = maxreqs;
1441	OUTPUT:	1096
1442	RETVAL	1097	void
		1098	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1099	PPCODE:
		1100	{
		1101	dREQ;
		1102
		1103	req->type = EIO_WD_OPEN;
		1104	req_set_path1 (req, pathname);
		1105
		1106	REQ_SEND;
		1107	}
1443		1108
1444	void	1109	void
1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1110	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1446	PROTOTYPE: $$$;$
1447	PPCODE:	1111	PPCODE:
1448	{	1112	{
1449	dREQ;	1113	dREQ;
1450		1114
1451	req->type = REQ_OPEN;	1115	req->type = EIO_OPEN;
1452	req->sv1 = newSVsv (pathname);	1116	req_set_path1 (req, pathname);
1453	req->ptr1 = SvPVbyte_nolen (req->sv1);
1454	req->int1 = flags;	1117	req->int1 = flags;
1455	req->mode = mode;	1118	req->int2 = mode;
1456		1119
1457	REQ_SEND;	1120	REQ_SEND;
1458	}	1121	}
1459		1122
1460	void	1123	void
1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1124	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1462	PROTOTYPE: $;$
1463	ALIAS:	1125	ALIAS:
1464	aio_close = REQ_CLOSE
1465	aio_fsync = REQ_FSYNC	1126	aio_fsync = EIO_FSYNC
1466	aio_fdatasync = REQ_FDATASYNC	1127	aio_fdatasync = EIO_FDATASYNC
		1128	aio_syncfs = EIO_SYNCFS
1467	PPCODE:	1129	PPCODE:
1468	{	1130	{
		1131	int fd = s_fileno_croak (fh, 0);
1469	dREQ;	1132	dREQ;
1470		1133
1471	req->type = ix;	1134	req->type = ix;
1472	req->sv1 = newSVsv (fh);	1135	req->sv1 = newSVsv (fh);
1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1136	req->int1 = fd;
		1137
		1138	REQ_SEND (req);
		1139	}
		1140
		1141	void
		1142	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1143	PPCODE:
		1144	{
		1145	int fd = s_fileno_croak (fh, 0);
		1146	dREQ;
		1147
		1148	req->type = EIO_SYNC_FILE_RANGE;
		1149	req->sv1 = newSVsv (fh);
		1150	req->int1 = fd;
		1151	req->offs = offset;
		1152	req->size = nbytes;
		1153	req->int2 = flags;
		1154
		1155	REQ_SEND (req);
		1156	}
		1157
		1158	void
		1159	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	int fd = s_fileno_croak (fh, 0);
		1163	dREQ;
		1164
		1165	req->type = EIO_FALLOCATE;
		1166	req->sv1 = newSVsv (fh);
		1167	req->int1 = fd;
		1168	req->int2 = mode;
		1169	req->offs = offset;
		1170	req->size = len;
		1171
		1172	REQ_SEND (req);
		1173	}
		1174
		1175	void
		1176	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1177	PPCODE:
		1178	{
		1179	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1180	int fd = s_fileno_croak (fh, 0);
		1181	dREQ;
		1182
		1183	if (expect_false (close_fd < 0))
		1184	{
		1185	int pipefd [2];
		1186
		1187	if (
		1188	#ifdef _WIN32
		1189	_pipe (pipefd, 1, _O_BINARY) < 0
		1190	#else
		1191	pipe (pipefd) < 0
		1192	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1193	#endif
		1194	|| close (pipefd [1]) < 0
		1195	)
		1196	abort (); /*D*/
		1197
		1198	close_fd = pipefd [0];
		1199	}
		1200
		1201	req->type = EIO_DUP2;
		1202	req->int1 = close_fd;
		1203	req->sv2 = newSVsv (fh);
		1204	req->int2 = fd;
1474		1205
1475	REQ_SEND (req);	1206	REQ_SEND (req);
1476	}	1207	}
1477		1208
1478	void	1209	void
1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1210	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1480	ALIAS:	1211	ALIAS:
1481	aio_read = REQ_READ	1212	aio_read = EIO_READ
1482	aio_write = REQ_WRITE	1213	aio_write = EIO_WRITE
1483	PROTOTYPE: $$$$$;$
1484	PPCODE:	1214	PPCODE:
1485	{	1215	{
1486	STRLEN svlen;	1216	STRLEN svlen;
		1217	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1487	char *svptr = SvPVbyte (data, svlen);	1218	char *svptr = SvPVbyte (data, svlen);
1488	UV len = SvUV (length);	1219	UV len = SvUV (length);
1489		1220
1490	SvUPGRADE (data, SVt_PV);
1491	SvPOK_on (data);
1492
1493	if (dataoffset < 0)	1221	if (dataoffset < 0)
1494	dataoffset += svlen;	1222	dataoffset += svlen;
1495		1223
1496	if (dataoffset < 0 || dataoffset > svlen)	1224	if (dataoffset < 0 || dataoffset > svlen)
1497	croak ("dataoffset outside of data scalar");	1225	croak ("dataoffset outside of data scalar");
1498		1226
1499	if (ix == REQ_WRITE)	1227	if (ix == EIO_WRITE)
1500	{	1228	{
1501	/* write: check length and adjust. */	1229	/* write: check length and adjust. */
1502	if (!SvOK (length) || len + dataoffset > svlen)	1230	if (!SvOK (length) || len + dataoffset > svlen)
1503	len = svlen - dataoffset;	1231	len = svlen - dataoffset;
1504	}	1232	}
1505	else	1233	else
1506	{	1234	{
1507	/* read: grow scalar as necessary */	1235	/* read: check type and grow scalar as necessary */
		1236	SvUPGRADE (data, SVt_PV);
1508	svptr = SvGROW (data, len + dataoffset + 1);	1237	svptr = SvGROW (data, len + dataoffset + 1);
1509	}	1238	}
1510		1239
1511	if (len < 0)
1512	croak ("length must not be negative");
1513
1514	{	1240	{
1515	dREQ;	1241	dREQ;
1516		1242
1517	req->type = ix;	1243	req->type = ix;
1518	req->sv1 = newSVsv (fh);	1244	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1245	req->int1 = fd;
1520	: IoOFP (sv_2io (fh)));
1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1246	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1522	req->size = len;	1247	req->size = len;
1523	req->sv2 = SvREFCNT_inc (data);	1248	req->sv2 = SvREFCNT_inc (data);
1524	req->ptr1 = (char *)svptr + dataoffset;	1249	req->ptr2 = (char *)svptr + dataoffset;
1525	req->stroffset = dataoffset;	1250	req->stroffset = dataoffset;
1526		1251
1527	if (!SvREADONLY (data))	1252	if (!SvREADONLY (data))
1528	{	1253	{
1529	SvREADONLY_on (data);	1254	SvREADONLY_on (data);
…		…
1533	REQ_SEND;	1258	REQ_SEND;
1534	}	1259	}
1535	}	1260	}
1536		1261
1537	void	1262	void
1538	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1263	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $$;$	1264	ALIAS:
		1265	aio_readlink = EIO_READLINK
		1266	aio_realpath = EIO_REALPATH
1540	PPCODE:	1267	PPCODE:
1541	{	1268	{
1542	SV *data;
1543	dREQ;	1269	dREQ;
1544		1270
1545	data = newSV (NAME_MAX);
1546	SvPOK_on (data);
1547
1548	req->type = REQ_READLINK;	1271	req->type = ix;
1549	req->sv1 = newSVsv (path);	1272	req_set_path1 (req, pathname);
1550	req->ptr2 = SvPVbyte_nolen (req->sv1);
1551	req->sv2 = data;
1552	req->ptr1 = SvPVbyte_nolen (data);
1553		1273
1554	REQ_SEND;	1274	REQ_SEND;
1555	}	1275	}
1556		1276
1557	void	1277	void
1558	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1278	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1559	PROTOTYPE: $$$$;$
1560	PPCODE:	1279	PPCODE:
1561	{	1280	{
		1281	int ifd = s_fileno_croak (in_fh , 0);
		1282	int ofd = s_fileno_croak (out_fh, 1);
1562	dREQ;	1283	dREQ;
1563		1284
1564	req->type = REQ_SENDFILE;	1285	req->type = EIO_SENDFILE;
1565	req->sv1 = newSVsv (out_fh);	1286	req->sv1 = newSVsv (out_fh);
1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1287	req->int1 = ofd;
1567	req->sv2 = newSVsv (in_fh);	1288	req->sv2 = newSVsv (in_fh);
1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1289	req->int2 = ifd;
1569	req->offs = SvVAL64 (in_offset);	1290	req->offs = in_offset;
1570	req->size = length;	1291	req->size = length;
1571		1292
1572	REQ_SEND;	1293	REQ_SEND;
1573	}	1294	}
1574		1295
1575	void	1296	void
1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1297	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1577	PROTOTYPE: $$$;$
1578	PPCODE:	1298	PPCODE:
1579	{	1299	{
		1300	int fd = s_fileno_croak (fh, 0);
1580	dREQ;	1301	dREQ;
1581		1302
1582	req->type = REQ_READAHEAD;	1303	req->type = EIO_READAHEAD;
1583	req->sv1 = newSVsv (fh);	1304	req->sv1 = newSVsv (fh);
1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1305	req->int1 = fd;
1585	req->offs = SvVAL64 (offset);	1306	req->offs = offset;
1586	req->size = length;	1307	req->size = length;
1587		1308
1588	REQ_SEND;	1309	REQ_SEND;
1589	}	1310	}
1590		1311
1591	void	1312	void
1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1313	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1593	ALIAS:	1314	ALIAS:
1594	aio_stat = REQ_STAT	1315	aio_stat = EIO_STAT
1595	aio_lstat = REQ_LSTAT	1316	aio_lstat = EIO_LSTAT
		1317	aio_statvfs = EIO_STATVFS
1596	PPCODE:	1318	PPCODE:
1597	{	1319	{
1598	dREQ;	1320	dREQ;
1599		1321
1600	req->ptr2 = malloc (sizeof (Stat_t));	1322	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1601	if (!req->ptr2)
1602	{
1603	req_destroy (req);
1604	croak ("out of memory during aio_stat statdata allocation");
1605	}
1606
1607	req->flags |= FLAG_PTR2_FREE;
1608	req->sv1 = newSVsv (fh_or_path);
1609
1610	if (SvPOK (fh_or_path))
1611	{
1612	req->type = ix;
1613	req->ptr1 = SvPVbyte_nolen (req->sv1);
1614	}
1615	else
1616	{
1617	req->type = REQ_FSTAT;
1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1619	}
1620		1323
1621	REQ_SEND;	1324	REQ_SEND;
1622	}	1325	}
		1326
		1327	UV
		1328	major (UV dev)
		1329	ALIAS:
		1330	minor = 1
		1331	CODE:
		1332	RETVAL = ix ? major (dev) : minor (dev);
		1333	OUTPUT:
		1334	RETVAL
		1335
		1336	UV
		1337	makedev (UV maj, UV min)
		1338	CODE:
		1339	RETVAL = makedev (maj, min);
		1340	OUTPUT:
		1341	RETVAL
1623		1342
1624	void	1343	void
1625	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1344	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1626	PPCODE:	1345	PPCODE:
1627	{	1346	{
1628	dREQ;	1347	dREQ;
1629		1348
1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1349	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1350	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1632	req->sv1 = newSVsv (fh_or_path);	1351	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1633
1634	if (SvPOK (fh_or_path))
1635	{
1636	req->type = REQ_UTIME;
1637	req->ptr1 = SvPVbyte_nolen (req->sv1);
1638	}
1639	else
1640	{
1641	req->type = REQ_FUTIME;
1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1643	}
1644		1352
1645	REQ_SEND;	1353	REQ_SEND;
1646	}	1354	}
1647		1355
1648	void	1356	void
1649	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1357	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1650	PPCODE:	1358	PPCODE:
1651	{	1359	{
1652	dREQ;	1360	dREQ;
1653		1361
1654	req->sv1 = newSVsv (fh_or_path);
1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1362	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1656		1363	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1657	if (SvPOK (fh_or_path))
1658	{
1659	req->type = REQ_TRUNCATE;
1660	req->ptr1 = SvPVbyte_nolen (req->sv1);
1661	}
1662	else
1663	{
1664	req->type = REQ_FTRUNCATE;
1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1666	}
1667		1364
1668	REQ_SEND;	1365	REQ_SEND;
1669	}	1366	}
1670		1367
1671	void	1368	void
1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1369	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1673	PPCODE:	1370	PPCODE:
1674	{	1371	{
1675	dREQ;	1372	dREQ;
1676		1373
1677	req->mode = mode;	1374	req->int2 = mode;
1678	req->sv1 = newSVsv (fh_or_path);	1375	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1679
1680	if (SvPOK (fh_or_path))
1681	{
1682	req->type = REQ_CHMOD;
1683	req->ptr1 = SvPVbyte_nolen (req->sv1);
1684	}
1685	else
1686	{
1687	req->type = REQ_FCHMOD;
1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1689	}
1690		1376
1691	REQ_SEND;	1377	REQ_SEND;
1692	}	1378	}
1693		1379
1694	void	1380	void
…		…
1697	{	1383	{
1698	dREQ;	1384	dREQ;
1699		1385
1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1386	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1387	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1702	req->sv1 = newSVsv (fh_or_path);	1388	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1703		1389
1704	if (SvPOK (fh_or_path))	1390	REQ_SEND;
1705	{	1391	}
1706	req->type = REQ_CHOWN;	1392
1707	req->ptr1 = SvPVbyte_nolen (req->sv1);	1393	void
1708	}	1394	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1709	else	1395	PPCODE:
1710	{	1396	{
1711	req->type = REQ_FCHOWN;	1397	dREQ;
1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1398
1713	}	1399	req->type = EIO_READDIR;
		1400	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1401
		1402	if (flags & EIO_READDIR_DENTS)
		1403	req->int1 |= EIO_READDIR_CUSTOM2;
		1404
		1405	req_set_path1 (req, pathname);
		1406
		1407	REQ_SEND;
		1408	}
		1409
		1410	void
		1411	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1412	PPCODE:
		1413	{
		1414	dREQ;
		1415
		1416	req->type = EIO_MKDIR;
		1417	req->int2 = mode;
		1418	req_set_path1 (req, pathname);
1714		1419
1715	REQ_SEND;	1420	REQ_SEND;
1716	}	1421	}
1717		1422
1718	void	1423	void
1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1424	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1720	ALIAS:	1425	ALIAS:
1721	aio_unlink = REQ_UNLINK	1426	aio_unlink = EIO_UNLINK
1722	aio_rmdir = REQ_RMDIR	1427	aio_rmdir = EIO_RMDIR
1723	aio_readdir = REQ_READDIR	1428	aio_readdir = EIO_READDIR
1724	PPCODE:	1429	PPCODE:
1725	{	1430	{
1726	dREQ;	1431	dREQ;
1727		1432
1728	req->type = ix;	1433	req->type = ix;
1729	req->sv1 = newSVsv (pathname);	1434	req_set_path1 (req, pathname);
1730	req->ptr1 = SvPVbyte_nolen (req->sv1);
1731
1732	REQ_SEND;
1733	}
1734
1735	void
1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1737	PPCODE:
1738	{
1739	dREQ;
1740
1741	req->type = REQ_MKDIR;
1742	req->sv1 = newSVsv (pathname);
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	req->mode = mode;
1745		1435
1746	REQ_SEND;	1436	REQ_SEND;
1747	}	1437	}
1748		1438
1749	void	1439	void
1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1440	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1751	ALIAS:	1441	ALIAS:
1752	aio_link = REQ_LINK	1442	aio_link = EIO_LINK
1753	aio_symlink = REQ_SYMLINK	1443	aio_symlink = EIO_SYMLINK
1754	aio_rename = REQ_RENAME	1444	aio_rename = EIO_RENAME
1755	PPCODE:	1445	PPCODE:
1756	{	1446	{
		1447	eio_wd wd2 = 0;
1757	dREQ;	1448	dREQ;
1758		1449
1759	req->type = ix;	1450	req->type = ix;
1760	req->sv2 = newSVsv (oldpath);	1451	req_set_path1 (req, oldpath);
1761	req->ptr2 = SvPVbyte_nolen (req->sv2);	1452	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1762	req->sv1 = newSVsv (newpath);	1453	req->int3 = (long)wd2;
1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1764		1454
1765	REQ_SEND;	1455	REQ_SEND;
1766	}	1456	}
1767		1457
1768	void	1458	void
1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1459	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1770	PPCODE:	1460	PPCODE:
1771	{	1461	{
1772	dREQ;	1462	dREQ;
1773		1463
1774	req->type = REQ_MKNOD;	1464	req->type = EIO_MKNOD;
1775	req->sv1 = newSVsv (pathname);
1776	req->ptr1 = SvPVbyte_nolen (req->sv1);
1777	req->mode = (mode_t)mode;	1465	req->int2 = (mode_t)mode;
1778	req->offs = dev;	1466	req->offs = dev;
		1467	req_set_path1 (req, pathname);
1779		1468
1780	REQ_SEND;	1469	REQ_SEND;
1781	}	1470	}
1782		1471
1783	void	1472	void
		1473	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1474	ALIAS:
		1475	aio_mtouch = EIO_MTOUCH
		1476	aio_msync = EIO_MSYNC
		1477	PPCODE:
		1478	{
		1479	STRLEN svlen;
		1480	char *svptr = SvPVbyte (data, svlen);
		1481	UV len = SvUV (length);
		1482
		1483	if (offset < 0)
		1484	offset += svlen;
		1485
		1486	if (offset < 0 || offset > svlen)
		1487	croak ("offset outside of scalar");
		1488
		1489	if (!SvOK (length) || len + offset > svlen)
		1490	len = svlen - offset;
		1491
		1492	{
		1493	dREQ;
		1494
		1495	req->type = ix;
		1496	req->sv2 = SvREFCNT_inc (data);
		1497	req->ptr2 = (char *)svptr + offset;
		1498	req->size = len;
		1499	req->int1 = flags;
		1500
		1501	REQ_SEND;
		1502	}
		1503	}
		1504
		1505	void
		1506	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1507	PPCODE:
		1508	{
		1509	STRLEN svlen;
		1510	char *svptr = SvPVbyte (data, svlen);
		1511	UV len = SvUV (length);
		1512
		1513	if (offset < 0)
		1514	offset += svlen;
		1515
		1516	if (offset < 0 || offset > svlen)
		1517	croak ("offset outside of scalar");
		1518
		1519	if (!SvOK (length) || len + offset > svlen)
		1520	len = svlen - offset;
		1521
		1522	{
		1523	dREQ;
		1524
		1525	req->type = EIO_MLOCK;
		1526	req->sv2 = SvREFCNT_inc (data);
		1527	req->ptr2 = (char *)svptr + offset;
		1528	req->size = len;
		1529
		1530	REQ_SEND;
		1531	}
		1532	}
		1533
		1534	void
		1535	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1536	PPCODE:
		1537	{
		1538	dREQ;
		1539
		1540	req->type = EIO_MLOCKALL;
		1541	req->int1 = flags;
		1542
		1543	REQ_SEND;
		1544	}
		1545
		1546	void
1784	aio_busy (double delay, SV *callback=&PL_sv_undef)	1547	aio_busy (double delay, SV *callback=&PL_sv_undef)
1785	PPCODE:	1548	PPCODE:
1786	{	1549	{
1787	dREQ;	1550	dREQ;
1788		1551
1789	req->type = REQ_BUSY;	1552	req->type = EIO_BUSY;
1790	req->nv1 = delay < 0. ? 0. : delay;	1553	req->nv1 = delay < 0. ? 0. : delay;
1791		1554
1792	REQ_SEND;	1555	REQ_SEND;
1793	}	1556	}
1794		1557
1795	void	1558	void
1796	aio_group (SV *callback=&PL_sv_undef)	1559	aio_group (SV *callback=&PL_sv_undef)
1797	PROTOTYPE: ;$
1798	PPCODE:	1560	PPCODE:
1799	{	1561	{
1800	dREQ;	1562	dREQ;
1801		1563
1802	req->type = REQ_GROUP;	1564	req->type = EIO_GROUP;
1803		1565
1804	req_send (req);	1566	req_submit (req);
1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1567	XPUSHs (req_sv (req, aio_grp_stash));
1806	}	1568	}
1807		1569
1808	void	1570	void
1809	aio_nop (SV *callback=&PL_sv_undef)	1571	aio_nop (SV *callback=&PL_sv_undef)
		1572	ALIAS:
		1573	aio_nop = EIO_NOP
		1574	aio_sync = EIO_SYNC
1810	PPCODE:	1575	PPCODE:
1811	{	1576	{
1812	dREQ;	1577	dREQ;
1813		1578
1814	req->type = REQ_NOP;	1579	req->type = ix;
1815		1580
1816	REQ_SEND;	1581	REQ_SEND;
1817	}	1582	}
1818		1583
1819	int	1584	int
1820	aioreq_pri (int pri = 0)	1585	aioreq_pri (int pri = 0)
1821	PROTOTYPE: ;$
1822	CODE:	1586	CODE:
1823	RETVAL = next_pri - PRI_BIAS;	1587	RETVAL = next_pri;
1824	if (items > 0)	1588	if (items > 0)
1825	{	1589	{
1826	if (pri < PRI_MIN) pri = PRI_MIN;	1590	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1827	if (pri > PRI_MAX) pri = PRI_MAX;	1591	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1828	next_pri = pri + PRI_BIAS;	1592	next_pri = pri;
1829	}	1593	}
1830	OUTPUT:	1594	OUTPUT:
1831	RETVAL	1595	RETVAL
1832		1596
1833	void	1597	void
1834	aioreq_nice (int nice = 0)	1598	aioreq_nice (int nice = 0)
1835	CODE:	1599	CODE:
1836	nice = next_pri - nice;	1600	nice = next_pri - nice;
1837	if (nice < PRI_MIN) nice = PRI_MIN;	1601	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1838	if (nice > PRI_MAX) nice = PRI_MAX;	1602	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1839	next_pri = nice + PRI_BIAS;	1603	next_pri = nice;
1840		1604
1841	void	1605	void
1842	flush ()	1606	flush ()
1843	PROTOTYPE:
1844	CODE:	1607	CODE:
1845	while (nreqs)	1608	while (eio_nreqs ())
1846	{	1609	{
1847	poll_wait ();	1610	poll_wait ();
1848	poll_cb ();	1611	poll_cb ();
1849	}	1612	}
1850		1613
1851	int	1614	int
1852	poll()	1615	poll ()
1853	PROTOTYPE:
1854	CODE:	1616	CODE:
1855	poll_wait ();	1617	poll_wait ();
1856	RETVAL = poll_cb ();	1618	RETVAL = poll_cb ();
1857	OUTPUT:	1619	OUTPUT:
1858	RETVAL	1620	RETVAL
1859		1621
1860	int	1622	int
1861	poll_fileno()	1623	poll_fileno ()
1862	PROTOTYPE:
1863	CODE:	1624	CODE:
1864	RETVAL = respipe [0];	1625	RETVAL = s_epipe_fd (&respipe);
1865	OUTPUT:	1626	OUTPUT:
1866	RETVAL	1627	RETVAL
1867		1628
1868	int	1629	int
1869	poll_cb(...)	1630	poll_cb (...)
1870	PROTOTYPE:	1631	PROTOTYPE:
1871	CODE:	1632	CODE:
1872	RETVAL = poll_cb ();	1633	RETVAL = poll_cb ();
1873	OUTPUT:	1634	OUTPUT:
1874	RETVAL	1635	RETVAL
1875		1636
1876	void	1637	void
1877	poll_wait()	1638	poll_wait ()
1878	PROTOTYPE:
1879	CODE:	1639	CODE:
1880	poll_wait ();	1640	poll_wait ();
1881		1641
1882	void
1883	setsig (int signum = SIGIO)
1884	PROTOTYPE: ;$
1885	CODE:
1886	{
1887	if (block_sig_level)
1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1889
1890	X_LOCK (reslock);
1891	main_tid = pthread_self ();
1892	main_sig = signum;
1893	X_UNLOCK (reslock);
1894
1895	if (main_sig && npending)
1896	pthread_kill (main_tid, main_sig);
1897	}
1898
1899	void
1900	aio_block (SV *cb)
1901	PROTOTYPE: &
1902	PPCODE:
1903	{
1904	int count;
1905
1906	block_sig ();
1907	PUSHMARK (SP);
1908	PUTBACK;
1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1910	SPAGAIN;
1911	unblock_sig ();
1912
1913	if (SvTRUE (ERRSV))
1914	croak (0);
1915
1916	XSRETURN (count);
1917	}
1918
1919	int	1642	int
1920	nreqs()	1643	nreqs ()
1921	PROTOTYPE:
1922	CODE:	1644	CODE:
1923	RETVAL = nreqs;	1645	RETVAL = eio_nreqs ();
1924	OUTPUT:	1646	OUTPUT:
1925	RETVAL	1647	RETVAL
1926		1648
1927	int	1649	int
1928	nready()	1650	nready ()
1929	PROTOTYPE:
1930	CODE:	1651	CODE:
1931	RETVAL = get_nready ();	1652	RETVAL = eio_nready ();
1932	OUTPUT:	1653	OUTPUT:
1933	RETVAL	1654	RETVAL
1934		1655
1935	int	1656	int
1936	npending()	1657	npending ()
1937	PROTOTYPE:
1938	CODE:	1658	CODE:
1939	RETVAL = get_npending ();	1659	RETVAL = eio_npending ();
1940	OUTPUT:	1660	OUTPUT:
1941	RETVAL	1661	RETVAL
1942		1662
1943	int	1663	int
1944	nthreads()	1664	nthreads ()
1945	PROTOTYPE:
1946	CODE:	1665	CODE:
1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1666	RETVAL = eio_nthreads ();
1948	RETVAL = started;
1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1950	OUTPUT:	1667	OUTPUT:
1951	RETVAL	1668	RETVAL
1952		1669
		1670	int
		1671	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1672	CODE:
		1673	RETVAL = posix_fadvise (fh, offset, length, advice);
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	IV
		1678	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1679	CODE:
		1680	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1681	OUTPUT:
		1682	RETVAL
		1683
		1684	void
		1685	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1686	PPCODE:
		1687	sv_unmagic (scalar, MMAP_MAGIC);
		1688	{
		1689	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1690	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1691	if (addr == (void *)-1)
		1692	XSRETURN_NO;
		1693
		1694	sv_force_normal (scalar);
		1695
		1696	/* we store the length in mg_obj, as namlen is I32 :/ */
		1697	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1698	->mg_obj = (SV *)length;
		1699
		1700	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1701
		1702	if (!(prot & PROT_WRITE))
		1703	SvREADONLY_on (scalar);
		1704
		1705	if (SvLEN (scalar))
		1706	Safefree (SvPVX (scalar));
		1707
		1708	SvPVX (scalar) = (char *)addr;
		1709	SvCUR_set (scalar, length);
		1710	SvLEN_set (scalar, 0);
		1711	SvPOK_only (scalar);
		1712
		1713	XSRETURN_YES;
		1714	}
		1715
		1716	void
		1717	munmap (SV *scalar)
		1718	CODE:
		1719	sv_unmagic (scalar, MMAP_MAGIC);
		1720
		1721	int
		1722	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1723	ALIAS:
		1724	mprotect = 1
		1725	CODE:
		1726	{
		1727	STRLEN svlen;
		1728	void *addr = SvPVbyte (scalar, svlen);
		1729	size_t len = SvUV (length);
		1730
		1731	if (offset < 0)
		1732	offset += svlen;
		1733
		1734	if (offset < 0 || offset > svlen)
		1735	croak ("offset outside of scalar");
		1736
		1737	if (!SvOK (length) || len + offset > svlen)
		1738	len = svlen - offset;
		1739
		1740	addr = (void *)(((intptr_t)addr) + offset);
		1741	eio_page_align (&addr, &len);
		1742
		1743	switch (ix)
		1744	{
		1745	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1746	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1747	}
		1748	}
		1749	OUTPUT:
		1750	RETVAL
		1751
		1752	int
		1753	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1754	CODE:
		1755	{
		1756	STRLEN svlen;
		1757	void *addr = SvPVbyte (scalar, svlen);
		1758	size_t len = SvUV (length);
		1759
		1760	if (offset < 0)
		1761	offset += svlen;
		1762
		1763	if (offset < 0 || offset > svlen)
		1764	croak ("offset outside of scalar");
		1765
		1766	if (!SvOK (length) || len + offset > svlen)
		1767	len = svlen - offset;
		1768
		1769	addr = (void *)(((intptr_t)addr) + offset);
		1770	eio_page_align (&addr, &len);
		1771	#if _POSIX_MEMLOCK_RANGE
		1772	RETVAL = munlock (addr, len);
		1773	#else
		1774	RETVAL = ((errno = ENOSYS), -1);
		1775	#endif
		1776	}
		1777	OUTPUT:
		1778	RETVAL
		1779
		1780	int
		1781	munlockall ()
		1782	CODE:
		1783	#if _POSIX_MEMLOCK
		1784	munlockall ();
		1785	#else
		1786	RETVAL = -1;
		1787	errno = ENOSYS;
		1788	#endif
		1789	OUTPUT:
		1790	RETVAL
		1791
		1792	void _on_next_submit (SV *cb)
		1793	CODE:
		1794	SvREFCNT_dec (on_next_submit);
		1795	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1796
1953	PROTOTYPES: DISABLE	1797	PROTOTYPES: DISABLE
		1798
		1799	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1800
		1801	BOOT:
		1802	{
		1803	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1804	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1805	}
		1806
		1807	void
		1808	DESTROY (SV *self)
		1809	CODE:
		1810	{
		1811	aio_wd wd = SvAIO_WD (self);
		1812	#if HAVE_AT
		1813	{
		1814	SV *callback = &PL_sv_undef;
		1815	dREQ; /* clobbers next_pri :/ */
		1816	next_pri = req->pri; /* restore next_pri */
		1817	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1818	req->type = EIO_WD_CLOSE;
		1819	req->wd = wd;
		1820	REQ_SEND;
		1821	}
		1822	#else
		1823	eio_wd_close_sync (wd);
		1824	#endif
		1825	}
1954		1826
1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1827	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1956		1828
1957	void	1829	void
1958	cancel (aio_req_ornot req)	1830	cancel (aio_req_ornot req)
1959	CODE:	1831	CODE:
1960	req_cancel (req);	1832	eio_cancel (req);
1961		1833
1962	void	1834	void
1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1835	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1964	CODE:	1836	PPCODE:
		1837	{
		1838	if (GIMME_V != G_VOID)
		1839	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1840
		1841	if (items > 1)
		1842	{
		1843	SV *cb_cv =get_cb (callback);
		1844
1965	SvREFCNT_dec (req->callback);	1845	SvREFCNT_dec (req->callback);
1966	req->callback = newSVsv (callback);	1846	req->callback = SvREFCNT_inc (cb_cv);
		1847	}
		1848	}
1967		1849
1968	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1850	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1969		1851
1970	void	1852	void
1971	add (aio_req grp, ...)	1853	add (aio_req grp, ...)
1972	PPCODE:	1854	PPCODE:
1973	{	1855	{
1974	int i;	1856	int i;
1975	aio_req req;
1976
1977	if (main_sig && !block_sig_level)
1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1979		1857
1980	if (grp->int1 == 2)	1858	if (grp->int1 == 2)
1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1859	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1982		1860
1983	for (i = 1; i < items; ++i )	1861	for (i = 1; i < items; ++i )
1984	{	1862	{
		1863	aio_req req;
		1864
1985	if (GIMME_V != G_VOID)	1865	if (GIMME_V != G_VOID)
1986	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1866	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1987		1867
1988	req = SvAIO_REQ (ST (i));	1868	req = SvAIO_REQ (ST (i));
1989		1869
1990	if (req)	1870	if (req)
1991	{	1871	eio_grp_add (grp, req);
1992	++grp->size;
1993	req->grp = grp;
1994
1995	req->grp_prev = 0;
1996	req->grp_next = grp->grp_first;
1997
1998	if (grp->grp_first)
1999	grp->grp_first->grp_prev = req;
2000
2001	grp->grp_first = req;
2002	}
2003	}	1872	}
2004	}	1873	}
2005		1874
2006	void	1875	void
2007	cancel_subs (aio_req_ornot req)	1876	cancel_subs (aio_req_ornot req)
…		…
2016	AV *av;	1885	AV *av;
2017		1886
2018	grp->errorno = errno;	1887	grp->errorno = errno;
2019		1888
2020	av = newAV ();	1889	av = newAV ();
		1890	av_extend (av, items - 1);
2021		1891
2022	for (i = 1; i < items; ++i )	1892	for (i = 1; i < items; ++i )
2023	av_push (av, newSVsv (ST (i)));	1893	av_push (av, newSVsv (ST (i)));
2024		1894
2025	SvREFCNT_dec (grp->sv1);	1895	SvREFCNT_dec (grp->sv1);
…		…
2032	grp->errorno = errorno;	1902	grp->errorno = errorno;
2033		1903
2034	void	1904	void
2035	limit (aio_req grp, int limit)	1905	limit (aio_req grp, int limit)
2036	CODE:	1906	CODE:
2037	grp->int2 = limit;	1907	eio_grp_limit (grp, limit);
2038	aio_grp_feed (grp);
2039		1908
2040	void	1909	void
2041	feed (aio_req grp, SV *callback=&PL_sv_undef)	1910	feed (aio_req grp, SV *callback=&PL_sv_undef)
2042	CODE:	1911	CODE:
2043	{	1912	{
2044	SvREFCNT_dec (grp->sv2);	1913	SvREFCNT_dec (grp->sv2);
2045	grp->sv2 = newSVsv (callback);	1914	grp->sv2 = newSVsv (callback);
		1915	grp->feed = aio_grp_feed;
2046		1916
2047	if (grp->int2 <= 0)	1917	if (grp->int2 <= 0)
2048	grp->int2 = 2;	1918	grp->int2 = 2;
2049		1919
2050	aio_grp_feed (grp);	1920	eio_grp_limit (grp, grp->int2);
2051	}	1921	}
2052		1922

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