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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 1.186 by root, Thu Jul 14 22:36:17 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
		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
18	#ifdef _WIN32	27	#ifdef _WIN32
19		28
20	# define SIGIO 0	29	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	30	# undef malloc
23	#undef free	31	# undef free
24		32
25	// perl overrides all those nice win32 functions	33	// perl overrides all those nice win32 functions
26	# undef open	34	# undef open
27	# undef read	35	# undef read
28	# undef write	36	# undef write
		37	# undef send
		38	# undef recv
29	# undef stat	39	# undef stat
30	# undef fstat	40	# undef fstat
31	# define lstat stat	41	# define lstat stat
32	# undef truncate	42	# undef truncate
33	# undef ftruncate	43	# undef ftruncate
…		…
36	# undef unlink	46	# undef unlink
37	# undef rmdir	47	# undef rmdir
38	# undef rename	48	# undef rename
39	# undef lseek	49	# undef lseek
40		50
41	# define chown(a,b,c) (errno = ENOSYS, -1)
42	# define fchown(a,b,c) (errno = ENOSYS, -1)
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 opendir(fd) (errno = ENOSYS, 0)
51	# define readdir(fd) (errno = ENOSYS, -1)	52	# define readdir(fd) (errno = ENOSYS, -1)
52	# define closedir(fd) (errno = ENOSYS, -1)	53	# define closedir(fd) (errno = ENOSYS, -1)
53	# define mkdir(a,b) mkdir (a)
54		54
55	#else	55	#else
56		56
57	# include "autoconf/config.h"
58	# include <sys/time.h>	57	# include <sys/time.h>
59	# include <sys/select.h>	58	# include <sys/select.h>
60	# include <unistd.h>	59	# include <unistd.h>
61	# include <utime.h>	60	# include <utime.h>
62	# include <signal.h>	61	# include <signal.h>
63	typedef struct dirent X_DIRENT;	62	# define EIO_STRUCT_DIRENT struct dirent
64		63
65	#endif
66
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	64	#endif
80	#endif
81		65
82	/* number of seconds after which idle threads exit */	66	/* perl stupidly overrides readdir and maybe others */
83	#define IDLE_TIMEOUT 10	67	/* with thread-unsafe versions, imagine that :( */
		68	#undef readdir
		69	#undef opendir
		70	#undef closedir
84		71
85	/* used for struct dirent, AIX doesn't provide it */	72	#define EIO_STRUCT_STAT Stat_t
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		73
93	/* use NV for 32 bit perls as it allows larger offsets */	74	/* use NV for 32 bit perls as it allows larger offsets */
94	#if IVSIZE >= 8	75	#if IVSIZE >= 8
		76	# define VAL64 IV
95	# define SvVAL64 SvIV	77	# define SvVAL64 SvIV
		78	# define newSVval64 newSViv
96	#else	79	#else
		80	# define VAL64 NV
97	# define SvVAL64 SvNV	81	# define SvVAL64 SvNV
		82	# define newSVval64 newSVnv
98	#endif	83	#endif
99		84
100	#define dBUF \	85	/*****************************************************************************/
101	char *aio_buf; \	86
102	X_LOCK (wrklock); \	87	#if __GNUC__ >= 3
103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	88	# define expect(expr,value) __builtin_expect ((expr),(value))
104	X_UNLOCK (wrklock); \	89	#else
105	if (!aio_buf) \	90	# define expect(expr,value) (expr)
106	return -1;	91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
107		97
108	typedef SV SV8; /* byte-sv, used for argument-checking */	98	typedef SV SV8; /* byte-sv, used for argument-checking */
		99	typedef int aio_rfd; /* read file desriptor */
		100	typedef int aio_wfd; /* write file descriptor */
		101
		102	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/config.h"
		113	#include "libeio/eio.h"
		114
		115	/* Linux/others */
		116	#ifndef O_ASYNC
		117	# define O_ASYNC 0
		118	#endif
		119	#ifndef O_DIRECT
		120	# define O_DIRECT 0
		121	#endif
		122	#ifndef O_NOATIME
		123	# define O_NOATIME 0
		124	#endif
		125
		126	/* POSIX */
		127	#ifndef O_CLOEXEC
		128	# define O_CLOEXEC 0
		129	#endif
		130	#ifndef O_NOFOLLOW
		131	# define O_NOFOLLOW 0
		132	#endif
		133	#ifndef O_NOCTTY
		134	# define O_NOCTTY 0
		135	#endif
		136	#ifndef O_NONBLOCK
		137	# define O_NONBLOCK 0
		138	#endif
		139	#ifndef O_EXEC
		140	# define O_EXEC 0
		141	#endif
		142	#ifndef O_SEARCH
		143	# define O_SEARCH 0
		144	#endif
		145	#ifndef O_DIRECTORY
		146	# define O_DIRECTORY 0
		147	#endif
		148	#ifndef O_DSYNC
		149	# define O_DSYNC 0
		150	#endif
		151	#ifndef O_RSYNC
		152	# define O_RSYNC 0
		153	#endif
		154	#ifndef O_SYNC
		155	# define O_SYNC 0
		156	#endif
		157	#ifndef O_TTY_INIT
		158	# define O_TTY_INIT 0
		159	#endif
		160
		161	#ifndef POSIX_FADV_NORMAL
		162	# define POSIX_FADV_NORMAL 0
		163	#endif
		164	#ifndef POSIX_FADV_SEQUENTIAL
		165	# define POSIX_FADV_SEQUENTIAL 0
		166	#endif
		167	#ifndef POSIX_FADV_RANDOM
		168	# define POSIX_FADV_RANDOM 0
		169	#endif
		170	#ifndef POSIX_FADV_NOREUSE
		171	# define POSIX_FADV_NOREUSE 0
		172	#endif
		173	#ifndef POSIX_FADV_WILLNEED
		174	# define POSIX_FADV_WILLNEED 0
		175	#endif
		176	#ifndef POSIX_FADV_DONTNEED
		177	# define POSIX_FADV_DONTNEED 0
		178	#endif
		179
		180	#if !HAVE_POSIX_FADVISE
		181	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		182	#endif
		183
		184	#ifndef POSIX_MADV_NORMAL
		185	# define POSIX_MADV_NORMAL 0
		186	#endif
		187	#ifndef POSIX_MADV_SEQUENTIAL
		188	# define POSIX_MADV_SEQUENTIAL 0
		189	#endif
		190	#ifndef POSIX_MADV_RANDOM
		191	# define POSIX_MADV_RANDOM 0
		192	#endif
		193	#ifndef POSIX_MADV_WILLNEED
		194	# define POSIX_MADV_WILLNEED 0
		195	#endif
		196	#ifndef POSIX_MADV_DONTNEED
		197	# define POSIX_MADV_DONTNEED 0
		198	#endif
		199
		200	#if !HAVE_POSIX_MADVISE
		201	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		202	#endif
		203
		204	#ifndef PROT_NONE
		205	# define PROT_NONE 0
		206	#endif
		207	#ifndef PROT_READ
		208	# define PROT_READ 0
		209	#endif
		210	#ifndef PROT_WRITE
		211	# define PROT_READ 0
		212	#endif
		213	#ifndef PROT_EXEC
		214	# define PROT_EXEC 0
		215	#endif
		216
		217	#ifndef ST_NODEV
		218	# define ST_NODEV 0
		219	#endif
		220	#ifndef ST_NOEXEC
		221	# define ST_NOEXEC 0
		222	#endif
		223	#ifndef ST_SYNCHRONOUS
		224	# define ST_SYNCHRONOUS 0
		225	#endif
		226	#ifndef ST_MANDLOCK
		227	# define ST_MANDLOCK 0
		228	#endif
		229	#ifndef ST_WRITE
		230	# define ST_WRITE 0
		231	#endif
		232	#ifndef ST_APPEND
		233	# define ST_APPEND 0
		234	#endif
		235	#ifndef ST_IMMUTABLE
		236	# define ST_IMMUTABLE 0
		237	#endif
		238	#ifndef ST_NOATIME
		239	# define ST_NOATIME 0
		240	#endif
		241	#ifndef ST_NODIRATIME
		242	# define ST_NODIRATIME 0
		243	#endif
		244	#ifndef ST_RELATIME
		245	# define ST_RELATIME 0
		246	#endif
		247
		248	#ifndef S_IFIFO
		249	# define S_IFIFO 0
		250	#endif
		251	#ifndef S_IFCHR
		252	# define S_IFCHR 0
		253	#endif
		254	#ifndef S_IFBLK
		255	# define S_IFBLK 0
		256	#endif
		257	#ifndef S_IFLNK
		258	# define S_IFLNK 0
		259	#endif
		260	#ifndef S_IFREG
		261	# define S_IFREG 0
		262	#endif
		263	#ifndef S_IFDIR
		264	# define S_IFDIR 0
		265	#endif
		266	#ifndef S_IFWHT
		267	# define S_IFWHT 0
		268	#endif
		269	#ifndef S_IFSOCK
		270	# define S_IFSOCK 0
		271	#endif
		272
		273	#ifndef MAP_ANONYMOUS
		274	# ifdef MAP_ANON
		275	# define MAP_ANONYMOUS MAP_ANON
		276	# else
		277	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		278	# endif
		279	#endif
		280	#ifndef MAP_HUGETLB
		281	# define MAP_HUGETLB 0
		282	#endif
		283	#ifndef MAP_LOCKED
		284	# define MAP_LOCKED 0
		285	#endif
		286	#ifndef MAP_NORESERVE
		287	# define MAP_NORESERVE 0
		288	#endif
		289	#ifndef MAP_POPULATE
		290	# define MAP_POPULATE 0
		291	#endif
		292	#ifndef MAP_NONBLOCK
		293	# define MAP_NONBLOCK 0
		294	#endif
		295
		296	#ifndef makedev
		297	# define makedev(maj,min) (((maj) << 8) | (min))
		298	#endif
		299	#ifndef major
		300	# define major(dev) ((dev) >> 8)
		301	#endif
		302	#ifndef minor
		303	# define minor(dev) ((dev) & 0xff)
		304	#endif
		305
		306	#ifndef PAGESIZE
		307	# define PAGESIZE sysconf (_SC_PAGESIZE)
		308	#endif
		309
		310	static int req_invoke (eio_req *req);
		311	#define EIO_FINISH(req) req_invoke (req)
		312	static void req_destroy (eio_req *grp);
		313	#define EIO_DESTROY(req) req_destroy (req)
109		314
110	enum {	315	enum {
111	REQ_QUIT,	316	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	};	317	};
127		318
128	#define AIO_REQ_KLASS "IO::AIO::REQ"	319	#include "libeio/eio.c"
129	#define AIO_GRP_KLASS "IO::AIO::GRP"
130		320
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;	321	typedef eio_req *aio_req;
163	typedef aio_cb *aio_req_ornot;	322	typedef eio_req *aio_req_ornot;
164		323
165	enum {	324	static SV *on_next_submit;
166	PRI_MIN = -4,	325	static int next_pri = EIO_PRI_DEFAULT;
167	PRI_MAX = 4,	326	static int max_outstanding;
168		327
169	DEFAULT_PRI = 0,	328	static s_epipe respipe;
170	PRI_BIAS = -PRI_MIN,
171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
172	};
173		329
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);	330	static void req_destroy (aio_req req);
373	static void req_cancel (aio_req req);	331	static void req_cancel (aio_req req);
374		332
		333	static void want_poll (void)
		334	{
		335	/* write a dummy byte to the pipe so fh becomes ready */
		336	s_epipe_signal (&respipe);
		337	}
		338
		339	static void done_poll (void)
		340	{
		341	/* read any signals sent by the worker threads */
		342	s_epipe_drain (&respipe);
		343	}
		344
375	/* must be called at most once */	345	/* must be called at most once */
376	static SV *req_sv (aio_req req, const char *klass)	346	static SV *req_sv (aio_req req, HV *stash)
377	{	347	{
378	if (!req->self)	348	if (!req->self)
379	{	349	{
380	req->self = (SV *)newHV ();	350	req->self = (SV *)newHV ();
381	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	351	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
382	}	352	}
383		353
384	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	354	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
385	}	355	}
386		356
387	static aio_req SvAIO_REQ (SV *sv)	357	static aio_req SvAIO_REQ (SV *sv)
388	{	358	{
389	MAGIC *mg;	359	MAGIC *mg;
390		360
391	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	361	if (!SvROK (sv)
		362	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		363	&& SvSTASH (SvRV (sv)) != aio_req_stash
		364	&& !sv_derived_from (sv, "IO::AIO::REQ")))
392	croak ("object of class " AIO_REQ_KLASS " expected");	365	croak ("object of class IO::AIO::REQ expected");
393		366
394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	367	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
395		368
396	return mg ? (aio_req)mg->mg_ptr : 0;	369	return mg ? (aio_req)mg->mg_ptr : 0;
397	}	370	}
398		371
399	static void aio_grp_feed (aio_req grp)	372	static void aio_grp_feed (aio_req grp)
400	{	373	{
401	block_sig ();	374	if (grp->sv2 && SvOK (grp->sv2))
402
403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
404	{	375	{
405	int old_len = grp->size;
406
407	if (grp->sv2 && SvOK (grp->sv2))
408	{
409	dSP;	376	dSP;
410		377
411	ENTER;	378	ENTER;
412	SAVETMPS;	379	SAVETMPS;
413	PUSHMARK (SP);	380	PUSHMARK (SP);
414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	381	XPUSHs (req_sv (grp, aio_grp_stash));
415	PUTBACK;	382	PUTBACK;
416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
417	SPAGAIN;	384	SPAGAIN;
418	FREETMPS;	385	FREETMPS;
419	LEAVE;	386	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	}	387	}
430
431	unblock_sig ();
432	}	388	}
433		389
434	static void aio_grp_dec (aio_req grp)	390	static void req_submit (eio_req *req)
435	{	391	{
436	--grp->size;	392	eio_submit (req);
437		393
438	/* call feeder, if applicable */	394	if (expect_false (on_next_submit))
439	aio_grp_feed (grp);
440
441	/* finish, if done */
442	if (!grp->size && grp->int1)
443	{	395	{
444	block_sig ();	396	dSP;
		397	SV *cb = sv_2mortal (on_next_submit);
445		398
446	if (!req_invoke (grp))	399	on_next_submit = 0;
447	{
448	req_destroy (grp);
449	unblock_sig ();
450	croak (0);
451	}
452		400
453	req_destroy (grp);	401	PUSHMARK (SP);
454	unblock_sig ();	402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
455	}	404	}
456	}	405	}
457		406
458	static int req_invoke (aio_req req)	407	static int req_invoke (eio_req *req)
459	{	408	{
460	dSP;
461
462	if (req->flags & FLAG_SV2_RO_OFF)	409	if (req->flags & FLAG_SV2_RO_OFF)
463	SvREADONLY_off (req->sv2);	410	SvREADONLY_off (req->sv2);
464		411
465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	412	if (!EIO_CANCELLED (req) && req->callback)
466	{	413	{
		414	dSP;
		415	static SV *sv_result_cache; /* caches the result integer SV */
		416	SV *sv_result;
		417
467	ENTER;	418	ENTER;
468	SAVETMPS;	419	SAVETMPS;
469	PUSHMARK (SP);	420	PUSHMARK (SP);
470	EXTEND (SP, 1);	421	EXTEND (SP, 1);
471		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
		425	{
		426	sv_result = sv_result_cache; sv_result_cache = 0;
		427	SvIV_set (sv_result, req->result);
		428	SvIOK_only (sv_result);
		429	}
		430	else
		431	{
		432	sv_result = newSViv (req->result);
		433	SvREADONLY_on (sv_result);
		434	}
		435
472	switch (req->type)	436	switch (req->type)
473	{	437	{
474	case REQ_READDIR:	438	case EIO_READDIR:
475	{	439	{
476	SV *rv = &PL_sv_undef;	440	SV *rv = &PL_sv_undef;
477		441
478	if (req->result >= 0)	442	if (req->result >= 0)
479	{	443	{
480	int i;	444	int i;
481	char *buf = req->ptr2;	445	char *names = (char *)req->ptr2;
		446	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
482	AV *av = newAV ();	447	AV *av = newAV ();
483		448
484	av_extend (av, req->result - 1);	449	av_extend (av, req->result - 1);
485		450
486	for (i = 0; i < req->result; ++i)	451	for (i = 0; i < req->result; ++i)
487	{	452	{
488	SV *sv = newSVpv (buf, 0);	453	if (req->int1 & EIO_READDIR_DENTS)
		454	{
		455	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
489		456
		457	if (req->int1 & EIO_READDIR_CUSTOM2)
		458	{
		459	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		460	AV *avent = newAV ();
		461
		462	av_extend (avent, 2);
		463
		464	if (!sv_type [ent->type])
		465	{
		466	sv_type [ent->type] = newSViv (ent->type);
		467	SvREADONLY_on (sv_type [ent->type]);
		468	}
		469
		470	av_store (avent, 0, namesv);
		471	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		472	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		473
		474	av_store (av, i, newRV_noinc ((SV *)avent));
		475	}
		476	else
490	av_store (av, i, sv);	477	av_store (av, i, namesv);
		478
		479	++ent;
		480	}
		481	else
		482	{
		483	SV *name = newSVpv (names, 0);
		484	av_store (av, i, name);
491	buf += SvCUR (sv) + 1;	485	names += SvCUR (name) + 1;
		486	}
492	}	487	}
493		488
494	rv = sv_2mortal (newRV_noinc ((SV *)av));	489	rv = sv_2mortal (newRV_noinc ((SV *)av));
495	}	490	}
496		491
497	PUSHs (rv);	492	PUSHs (rv);
		493
		494	if (req->int1 & EIO_READDIR_CUSTOM1)
		495	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
498	}	496	}
499	break;	497	break;
500		498
501	case REQ_OPEN:	499	case EIO_OPEN:
502	{	500	{
503	/* convert fd to fh */	501	/* convert fd to fh */
504	SV *fh;	502	SV *fh = &PL_sv_undef;
505		503
506	PUSHs (sv_2mortal (newSViv (req->result)));	504	if (req->result >= 0)
507	PUTBACK;	505	{
508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	506	GV *gv = (GV *)sv_newmortal ();
509	SPAGAIN;	507	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		508	char sym [64];
		509	int symlen;
		510
		511	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		512	gv_init (gv, aio_stash, sym, symlen, 0);
510		513
511	fh = POPs;	514	symlen = snprintf (
512	PUSHMARK (SP);	515	sym,
		516	sizeof (sym),
		517	"%s&=%d",
		518	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		519	(int)req->result
		520	);
		521
		522	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		523	fh = (SV *)gv;
		524	}
		525
513	XPUSHs (fh);	526	PUSHs (fh);
514	}	527	}
515	break;	528	break;
516		529
		530	case EIO_STATVFS:
		531	case EIO_FSTATVFS:
		532	{
		533	SV *rv = &PL_sv_undef;
		534
		535	if (req->result >= 0)
		536	{
		537	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		538	HV *hv = newHV ();
		539
		540	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		541
		542	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		543	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		544	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		545	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		546	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		547	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		548	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		549	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		550	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		551	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		552	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		553	}
		554
		555	PUSHs (rv);
		556	}
		557
		558	break;
		559
517	case REQ_GROUP:	560	case EIO_GROUP:
518	req->int1 = 2; /* mark group as finished */	561	req->int1 = 2; /* mark group as finished */
519		562
520	if (req->sv1)	563	if (req->sv1)
521	{	564	{
522	int i;	565	int i;
…		…
526	for (i = 0; i <= AvFILL (av); ++i)	569	for (i = 0; i <= AvFILL (av); ++i)
527	PUSHs (*av_fetch (av, i, 0));	570	PUSHs (*av_fetch (av, i, 0));
528	}	571	}
529	break;	572	break;
530		573
531	case REQ_NOP:	574	case EIO_NOP:
532	case REQ_BUSY:	575	case EIO_BUSY:
533	break;	576	break;
534		577
535	case REQ_READLINK:	578	case EIO_READLINK:
		579	case EIO_REALPATH:
536	if (req->result > 0)	580	if (req->result > 0)
537	{	581	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;	582	break;
543		583
544	case REQ_STAT:	584	case EIO_STAT:
545	case REQ_LSTAT:	585	case EIO_LSTAT:
546	case REQ_FSTAT:	586	case EIO_FSTAT:
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	587	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;	588	PL_laststatval = req->result;
549	PL_statcache = *(Stat_t *)(req->ptr2);	589	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
550	PUSHs (sv_2mortal (newSViv (req->result)));	590	PUSHs (sv_result);
551	break;	591	break;
552		592
553	case REQ_READ:	593	case EIO_READ:
		594	{
554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	595	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
555	*SvEND (req->sv2) = 0;	596	*SvEND (req->sv2) = 0;
556	PUSHs (sv_2mortal (newSViv (req->result)));	597	SvPOK_only (req->sv2);
		598	SvSETMAGIC (req->sv2);
		599	PUSHs (sv_result);
		600	}
557	break;	601	break;
558		602
		603	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		604	if (req->result > 0)
		605	SvIV_set (sv_result, 0);
		606	/* FALLTHROUGH */
		607
559	default:	608	default:
560	PUSHs (sv_2mortal (newSViv (req->result)));	609	PUSHs (sv_result);
561	break;	610	break;
562	}	611	}
563		612
564	errno = req->errorno;	613	errno = req->errorno;
565		614
566	PUTBACK;	615	PUTBACK;
567	call_sv (req->callback, G_VOID | G_EVAL);	616	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
568	SPAGAIN;	617	SPAGAIN;
		618
		619	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		620	SvREFCNT_dec (sv_result);
		621	else
		622	sv_result_cache = sv_result;
569		623
570	FREETMPS;	624	FREETMPS;
571	LEAVE;	625	LEAVE;
		626
		627	PUTBACK;
572	}	628	}
573		629
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);	630	return !!SvTRUE (ERRSV);
589	}	631	}
590		632
591	static void req_destroy (aio_req req)	633	static void req_destroy (aio_req req)
592	{	634	{
593	if (req->self)	635	if (req->self)
…		…
598		640
599	SvREFCNT_dec (req->sv1);	641	SvREFCNT_dec (req->sv1);
600	SvREFCNT_dec (req->sv2);	642	SvREFCNT_dec (req->sv2);
601	SvREFCNT_dec (req->callback);	643	SvREFCNT_dec (req->callback);
602		644
603	if (req->flags & FLAG_PTR2_FREE)
604	free (req->ptr2);
605
606	Safefree (req);	645	Safefree (req);
607	}	646	}
608		647
609	static void req_cancel_subs (aio_req grp)	648	static void req_cancel_subs (aio_req grp)
610	{	649	{
611	aio_req sub;	650	aio_req sub;
612		651
613	if (grp->type != REQ_GROUP)	652	if (grp->type != EIO_GROUP)
614	return;	653	return;
615		654
616	SvREFCNT_dec (grp->sv2);	655	SvREFCNT_dec (grp->sv2);
617	grp->sv2 = 0;	656	grp->sv2 = 0;
618		657
619	for (sub = grp->grp_first; sub; sub = sub->grp_next)	658	eio_grp_cancel (grp);
620	req_cancel (sub);
621	}	659	}
622		660
623	static void req_cancel (aio_req req)	661	static void create_respipe (void)
624	{	662	{
625	req->flags |= FLAG_CANCELLED;	663	if (s_epipe_renew (&respipe))
626		664	croak ("IO::AIO: unable to initialize result pipe");
627	req_cancel_subs (req);
628	}	665	}
629		666
630	X_THREAD_PROC (aio_proc);
631
632	static void start_thread (void)
633	{
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 ()	667	static void poll_wait (void)
726	{	668	{
727	fd_set rfd;
728
729	while (nreqs)	669	while (eio_nreqs ())
730	{	670	{
731	int size;	671	int size;
732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	672
		673	X_LOCK (reslock);
733	size = res_queue.size;	674	size = res_queue.size;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	675	X_UNLOCK (reslock);
735		676
736	if (size)	677	if (size)
737	return;	678	return;
738		679
739	maybe_start_thread ();	680	etp_maybe_start_thread ();
740		681
741	FD_ZERO(&rfd);	682	s_epipe_wait (&respipe);
742	FD_SET(respipe [0], &rfd);
743
744	select (respipe [0] + 1, &rfd, 0, 0, 0);
745	}	683	}
746	}	684	}
747		685
748	static int poll_cb ()	686	static int poll_cb (void)
749	{	687	{
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 (;;)	688	for (;;)
763	{	689	{
764	for (;;)	690	int res = eio_poll ();
765	{
766	maybe_start_thread ();
767		691
768	X_LOCK (reslock);	692	if (res > 0)
769	req = reqq_shift (&res_queue);
770
771	if (req)
772	{
773	--npending;
774
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	}
796	else
797	{
798	if (!req_invoke (req))
799	{
800	req_destroy (req);
801	unblock_sig ();
802	croak (0);	693	croak (0);
803	}
804		694
805	count++;	695	if (!max_outstanding || max_outstanding > eio_nreqs ())
806	}	696	return res;
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	}
821
822	if (nreqs <= max_outstanding)
823	break;
824		697
825	poll_wait ();	698	poll_wait ();
826
827	++maxreqs;
828	}	699	}
		700	}
829		701
830	unblock_sig ();	702	static void atfork_child (void)
831	return count;	703	{
		704	create_respipe ();
832	}	705	}
833		706
834	/*****************************************************************************/	707	/*****************************************************************************/
835	/* work around various missing functions */
836		708
837	#if !HAVE_PREADWRITE	709	#if !_POSIX_MAPPED_FILES
838	# define pread aio_pread	710	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
839	# define pwrite aio_pwrite	711	# define munmap(addr,length) (errno = ENOSYS, -1)
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	712	#endif
1010	#else
1011	res = -1;
1012	errno = ENOSYS;
1013	#endif
1014		713
1015	if (res < 0	714	#if !_POSIX_MEMORY_PROTECTION
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	715	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1017	#if __solaris	716	# define PROT_NONE 0
1018	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
1019	#endif	721	#endif
1020	)
1021	)
1022	{
1023	/* emulate sendfile. this is a major pain in the ass */
1024	dBUF;
1025		722
1026	res = 0;	723	#define MMAP_MAGIC PERL_MAGIC_ext
1027		724
1028	while (count)	725	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
1029	{	726	{
1030	ssize_t cnt;	727	int old_errno = errno;
1031		728	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	729	errno = old_errno;
1033		730
1034	if (cnt <= 0)	731	mg->mg_obj = 0; /* just in case */
1035	{
1036	if (cnt && !res) res = -1;
1037	break;
1038	}
1039		732
1040	cnt = write (ofd, aio_buf, cnt);	733	SvREADONLY_off (sv);
1041		734
1042	if (cnt <= 0)	735	if (SvPVX (sv) != mg->mg_ptr)
1043	{	736	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1044	if (cnt && !res) res = -1;
1045	break;
1046	}
1047		737
1048	offset += cnt;	738	SvCUR_set (sv, 0);
1049	res += cnt;	739	SvPVX (sv) = 0;
1050	count -= cnt;	740	SvOK_off (sv);
1051	}
1052	}
1053		741
1054	return res;	742	return 0;
1055	}	743	}
1056		744
1057	/* read a full directory */	745	static MGVTBL mmap_vtbl = {
1058	static void scandir_ (aio_req req, worker *self)	746	0, 0, 0, 0, mmap_free
1059	{	747	};
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		748
1118	/*****************************************************************************/	749	/*****************************************************************************/
1119		750
1120	X_THREAD_PROC (aio_proc)	751	static SV * get_cb (SV *cb_sv)
1121	{	752	{
1122	{//D	753	SvGETMAGIC (cb_sv);
1123	aio_req req;	754	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
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	}	755	}
1356		756
1357	#define dREQ \	757	#define dREQ \
		758	SV *cb_cv; \
1358	aio_req req; \	759	aio_req req; \
1359	int req_pri = next_pri; \	760	int req_pri = next_pri; \
1360	next_pri = DEFAULT_PRI + PRI_BIAS; \	761	next_pri = EIO_PRI_DEFAULT; \
1361	\	762	\
1362	if (SvOK (callback) && !SvROK (callback)) \	763	cb_cv = get_cb (callback); \
1363	croak ("callback must be undef or of reference type"); \
1364	\	764	\
1365	Newz (0, req, 1, aio_cb); \	765	Newz (0, req, 1, eio_req); \
1366	if (!req) \	766	if (!req) \
1367	croak ("out of memory during aio_req allocation"); \	767	croak ("out of memory during eio_req allocation"); \
1368	\	768	\
1369	req->callback = newSVsv (callback); \	769	req->callback = SvREFCNT_inc (cb_cv); \
1370	req->pri = req_pri	770	req->pri = req_pri
1371		771
1372	#define REQ_SEND \	772	#define REQ_SEND \
		773	PUTBACK; \
1373	req_send (req); \	774	req_submit (req); \
		775	SPAGAIN; \
1374	\	776	\
1375	if (GIMME_V != G_VOID) \	777	if (GIMME_V != G_VOID) \
1376	XPUSHs (req_sv (req, AIO_REQ_KLASS));	778	XPUSHs (req_sv (req, aio_req_stash));
1377		779
1378	MODULE = IO::AIO PACKAGE = IO::AIO	780	MODULE = IO::AIO PACKAGE = IO::AIO
1379		781
1380	PROTOTYPES: ENABLE	782	PROTOTYPES: ENABLE
1381		783
1382	BOOT:	784	BOOT:
1383	{	785	{
		786	static const struct {
		787	const char *name;
		788	IV iv;
		789	} *civ, const_iv[] = {
		790	# define const_niv(name, value) { # name, (IV) value },
		791	# define const_iv(name) { # name, (IV) name },
		792	# define const_eio(name) { # name, (IV) EIO_ ## name },
		793	const_iv (EXDEV)
		794	const_iv (ENOSYS)
		795	const_iv (O_RDONLY)
		796	const_iv (O_WRONLY)
		797	const_iv (O_RDWR)
		798	const_iv (O_CREAT)
		799	const_iv (O_TRUNC)
		800	const_iv (O_EXCL)
		801	const_iv (O_APPEND)
		802
		803	const_iv (O_ASYNC)
		804	const_iv (O_DIRECT)
		805	const_iv (O_NOATIME)
		806
		807	const_iv (O_CLOEXEC)
		808	const_iv (O_NOCTTY)
		809	const_iv (O_NOFOLLOW)
		810	const_iv (O_NONBLOCK)
		811	const_iv (O_EXEC)
		812	const_iv (O_SEARCH)
		813	const_iv (O_DIRECTORY)
		814	const_iv (O_DSYNC)
		815	const_iv (O_RSYNC)
		816	const_iv (O_SYNC)
		817	const_iv (O_TTY_INIT)
		818
		819	const_iv (S_IFIFO)
		820	const_iv (S_IFCHR)
		821	const_iv (S_IFBLK)
		822	const_iv (S_IFLNK)
		823	const_iv (S_IFREG)
		824	const_iv (S_IFDIR)
		825	const_iv (S_IFWHT)
		826	const_iv (S_IFSOCK)
		827	const_iv (S_IFMT)
		828
		829	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		830	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		831	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		832	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		833	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		834	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		835
		836	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		837	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		838	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		839	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		840	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		841
		842	const_iv (ST_RDONLY)
		843	const_iv (ST_NOSUID)
		844	const_iv (ST_NODEV)
		845	const_iv (ST_NOEXEC)
		846	const_iv (ST_SYNCHRONOUS)
		847	const_iv (ST_MANDLOCK)
		848	const_iv (ST_WRITE)
		849	const_iv (ST_APPEND)
		850	const_iv (ST_IMMUTABLE)
		851	const_iv (ST_NOATIME)
		852	const_iv (ST_NODIRATIME)
		853	const_iv (ST_RELATIME)
		854
		855	const_iv (PROT_NONE)
		856	const_iv (PROT_EXEC)
		857	const_iv (PROT_READ)
		858	const_iv (PROT_WRITE)
		859
		860	/*const_iv (MAP_FIXED)*/
		861	const_iv (MAP_PRIVATE)
		862	const_iv (MAP_SHARED)
		863	const_iv (MAP_ANONYMOUS)
		864
		865	/* linuxish */
		866	const_iv (MAP_HUGETLB)
		867	const_iv (MAP_LOCKED)
		868	const_iv (MAP_NORESERVE)
		869	const_iv (MAP_POPULATE)
		870	const_iv (MAP_NONBLOCK)
		871
		872	const_eio (MCL_FUTURE)
		873	const_eio (MCL_CURRENT)
		874
		875	const_eio (MS_ASYNC)
		876	const_eio (MS_INVALIDATE)
		877	const_eio (MS_SYNC)
		878
		879	const_eio (MT_MODIFY)
		880
		881	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		882	const_eio (SYNC_FILE_RANGE_WRITE)
		883	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		884
		885	const_eio (FALLOC_FL_KEEP_SIZE)
		886
		887	const_eio (READDIR_DENTS)
		888	const_eio (READDIR_DIRS_FIRST)
		889	const_eio (READDIR_STAT_ORDER)
		890	const_eio (READDIR_FOUND_UNKNOWN)
		891
		892	const_eio (DT_UNKNOWN)
		893	const_eio (DT_FIFO)
		894	const_eio (DT_CHR)
		895	const_eio (DT_DIR)
		896	const_eio (DT_BLK)
		897	const_eio (DT_REG)
		898	const_eio (DT_LNK)
		899	const_eio (DT_SOCK)
		900	const_eio (DT_WHT)
		901	};
		902
1384	HV *stash = gv_stashpv ("IO::AIO", 1);	903	aio_stash = gv_stashpv ("IO::AIO" , 1);
		904	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		905	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1385		906
1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	907	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	908	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->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		909
1403	if (!create_pipe (respipe))	910	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1404	croak ("cannot set result pipe to nonblocking mode");
1405		911
1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	912	create_respipe ();
1407	}
1408		913
		914	if (eio_init (want_poll, done_poll) < 0)
		915	croak ("IO::AIO: unable to initialise eio library");
		916
		917	/* atfork child called in fifo order, so before eio's handler */
		918	X_THREAD_ATFORK (0, 0, atfork_child);
		919	}
		920
1409	void	921	void
1410	max_poll_reqs (int nreqs)	922	max_poll_reqs (unsigned int nreqs)
1411	PROTOTYPE: $	923	PROTOTYPE: $
1412	CODE:	924	CODE:
1413	max_poll_reqs = nreqs;	925	eio_set_max_poll_reqs (nreqs);
1414		926
1415	void	927	void
1416	max_poll_time (double nseconds)	928	max_poll_time (double nseconds)
1417	PROTOTYPE: $	929	PROTOTYPE: $
1418	CODE:	930	CODE:
1419	max_poll_time = nseconds * AIO_TICKS;	931	eio_set_max_poll_time (nseconds);
1420		932
1421	void	933	void
1422	min_parallel (int nthreads)	934	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: $	935	PROTOTYPE: $
1432	CODE:	936	CODE:
1433	set_max_idle (nthreads);	937	eio_set_min_parallel (nthreads);
1434		938
1435	int	939	void
1436	max_outstanding (int maxreqs)	940	max_parallel (unsigned int nthreads)
1437	PROTOTYPE: $	941	PROTOTYPE: $
1438	CODE:	942	CODE:
1439	RETVAL = max_outstanding;	943	eio_set_max_parallel (nthreads);
		944
		945	void
		946	max_idle (unsigned int nthreads)
		947	PROTOTYPE: $
		948	CODE:
		949	eio_set_max_idle (nthreads);
		950
		951	void
		952	idle_timeout (unsigned int seconds)
		953	PROTOTYPE: $
		954	CODE:
		955	eio_set_idle_timeout (seconds);
		956
		957	void
		958	max_outstanding (unsigned int maxreqs)
		959	PROTOTYPE: $
		960	CODE:
1440	max_outstanding = maxreqs;	961	max_outstanding = maxreqs;
1441	OUTPUT:
1442	RETVAL
1443		962
1444	void	963	void
1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	964	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1446	PROTOTYPE: $$$;$
1447	PPCODE:	965	PPCODE:
1448	{	966	{
1449	dREQ;	967	dREQ;
1450		968
1451	req->type = REQ_OPEN;	969	req->type = EIO_OPEN;
1452	req->sv1 = newSVsv (pathname);	970	req->sv1 = newSVsv (pathname);
1453	req->ptr1 = SvPVbyte_nolen (req->sv1);	971	req->ptr1 = SvPVbyte_nolen (req->sv1);
1454	req->int1 = flags;	972	req->int1 = flags;
1455	req->mode = mode;	973	req->int2 = mode;
1456		974
1457	REQ_SEND;	975	REQ_SEND;
1458	}	976	}
1459		977
1460	void	978	void
1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)	979	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1462	PROTOTYPE: $;$
1463	ALIAS:	980	ALIAS:
1464	aio_close = REQ_CLOSE
1465	aio_fsync = REQ_FSYNC	981	aio_fsync = EIO_FSYNC
1466	aio_fdatasync = REQ_FDATASYNC	982	aio_fdatasync = EIO_FDATASYNC
1467	PPCODE:	983	PPCODE:
1468	{	984	{
		985	int fd = s_fileno_croak (fh, 0);
1469	dREQ;	986	dREQ;
1470		987
1471	req->type = ix;	988	req->type = ix;
1472	req->sv1 = newSVsv (fh);	989	req->sv1 = newSVsv (fh);
1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	990	req->int1 = fd;
		991
		992	REQ_SEND (req);
		993	}
		994
		995	void
		996	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		997	PPCODE:
		998	{
		999	int fd = s_fileno_croak (fh, 0);
		1000	dREQ;
		1001
		1002	req->type = EIO_SYNC_FILE_RANGE;
		1003	req->sv1 = newSVsv (fh);
		1004	req->int1 = fd;
		1005	req->offs = offset;
		1006	req->size = nbytes;
		1007	req->int2 = flags;
		1008
		1009	REQ_SEND (req);
		1010	}
		1011
		1012	void
		1013	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_FALLOCATE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->int2 = mode;
		1023	req->offs = offset;
		1024	req->size = len;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1034	int fd = s_fileno_croak (fh, 0);
		1035	dREQ;
		1036
		1037	if (close_pipe < 0)
		1038	{
		1039	int pipefd [2];
		1040
		1041	if (pipe (pipefd) < 0
		1042	|| close (pipefd [1]) < 0
		1043	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1044	abort (); /*D*/
		1045
		1046	close_pipe = pipefd [0];
		1047	}
		1048
		1049	req->type = EIO_DUP2;
		1050	req->int1 = close_pipe;
		1051	req->sv2 = newSVsv (fh);
		1052	req->int2 = fd;
1474		1053
1475	REQ_SEND (req);	1054	REQ_SEND (req);
1476	}	1055	}
1477		1056
1478	void	1057	void
1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1058	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1480	ALIAS:	1059	ALIAS:
1481	aio_read = REQ_READ	1060	aio_read = EIO_READ
1482	aio_write = REQ_WRITE	1061	aio_write = EIO_WRITE
1483	PROTOTYPE: $$$$$;$
1484	PPCODE:	1062	PPCODE:
1485	{	1063	{
1486	STRLEN svlen;	1064	STRLEN svlen;
		1065	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1487	char *svptr = SvPVbyte (data, svlen);	1066	char *svptr = SvPVbyte (data, svlen);
1488	UV len = SvUV (length);	1067	UV len = SvUV (length);
1489		1068
1490	SvUPGRADE (data, SVt_PV);
1491	SvPOK_on (data);
1492
1493	if (dataoffset < 0)	1069	if (dataoffset < 0)
1494	dataoffset += svlen;	1070	dataoffset += svlen;
1495		1071
1496	if (dataoffset < 0 || dataoffset > svlen)	1072	if (dataoffset < 0 || dataoffset > svlen)
1497	croak ("dataoffset outside of data scalar");	1073	croak ("dataoffset outside of data scalar");
1498		1074
1499	if (ix == REQ_WRITE)	1075	if (ix == EIO_WRITE)
1500	{	1076	{
1501	/* write: check length and adjust. */	1077	/* write: check length and adjust. */
1502	if (!SvOK (length) || len + dataoffset > svlen)	1078	if (!SvOK (length) || len + dataoffset > svlen)
1503	len = svlen - dataoffset;	1079	len = svlen - dataoffset;
1504	}	1080	}
1505	else	1081	else
1506	{	1082	{
1507	/* read: grow scalar as necessary */	1083	/* read: check type and grow scalar as necessary */
		1084	SvUPGRADE (data, SVt_PV);
1508	svptr = SvGROW (data, len + dataoffset + 1);	1085	svptr = SvGROW (data, len + dataoffset + 1);
1509	}	1086	}
1510		1087
1511	if (len < 0)
1512	croak ("length must not be negative");
1513
1514	{	1088	{
1515	dREQ;	1089	dREQ;
1516		1090
1517	req->type = ix;	1091	req->type = ix;
1518	req->sv1 = newSVsv (fh);	1092	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1093	req->int1 = fd;
1520	: IoOFP (sv_2io (fh)));
1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1094	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1522	req->size = len;	1095	req->size = len;
1523	req->sv2 = SvREFCNT_inc (data);	1096	req->sv2 = SvREFCNT_inc (data);
1524	req->ptr1 = (char *)svptr + dataoffset;	1097	req->ptr2 = (char *)svptr + dataoffset;
1525	req->stroffset = dataoffset;	1098	req->stroffset = dataoffset;
1526		1099
1527	if (!SvREADONLY (data))	1100	if (!SvREADONLY (data))
1528	{	1101	{
1529	SvREADONLY_on (data);	1102	SvREADONLY_on (data);
…		…
1534	}	1107	}
1535	}	1108	}
1536		1109
1537	void	1110	void
1538	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1111	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $$;$	1112	ALIAS:
		1113	aio_readlink = EIO_READLINK
		1114	aio_realpath = EIO_REALPATH
1540	PPCODE:	1115	PPCODE:
1541	{	1116	{
1542	SV *data;	1117	SV *data;
1543	dREQ;	1118	dREQ;
1544		1119
1545	data = newSV (NAME_MAX);
1546	SvPOK_on (data);
1547
1548	req->type = REQ_READLINK;	1120	req->type = ix;
1549	req->sv1 = newSVsv (path);	1121	req->sv1 = newSVsv (path);
1550	req->ptr2 = SvPVbyte_nolen (req->sv1);	1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
1551	req->sv2 = data;
1552	req->ptr1 = SvPVbyte_nolen (data);
1553		1123
1554	REQ_SEND;	1124	REQ_SEND;
1555	}	1125	}
1556		1126
1557	void	1127	void
1558	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1128	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1559	PROTOTYPE: $$$$;$
1560	PPCODE:	1129	PPCODE:
1561	{	1130	{
		1131	int ifd = s_fileno_croak (in_fh , 0);
		1132	int ofd = s_fileno_croak (out_fh, 1);
1562	dREQ;	1133	dREQ;
1563		1134
1564	req->type = REQ_SENDFILE;	1135	req->type = EIO_SENDFILE;
1565	req->sv1 = newSVsv (out_fh);	1136	req->sv1 = newSVsv (out_fh);
1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1137	req->int1 = ofd;
1567	req->sv2 = newSVsv (in_fh);	1138	req->sv2 = newSVsv (in_fh);
1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1139	req->int2 = ifd;
1569	req->offs = SvVAL64 (in_offset);	1140	req->offs = in_offset;
1570	req->size = length;	1141	req->size = length;
1571		1142
1572	REQ_SEND;	1143	REQ_SEND;
1573	}	1144	}
1574		1145
1575	void	1146	void
1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1147	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1577	PROTOTYPE: $$$;$
1578	PPCODE:	1148	PPCODE:
1579	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1580	dREQ;	1151	dREQ;
1581		1152
1582	req->type = REQ_READAHEAD;	1153	req->type = EIO_READAHEAD;
1583	req->sv1 = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1585	req->offs = SvVAL64 (offset);	1156	req->offs = offset;
1586	req->size = length;	1157	req->size = length;
1587		1158
1588	REQ_SEND;	1159	REQ_SEND;
1589	}	1160	}
1590		1161
1591	void	1162	void
1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1163	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1593	ALIAS:	1164	ALIAS:
1594	aio_stat = REQ_STAT	1165	aio_stat = EIO_STAT
1595	aio_lstat = REQ_LSTAT	1166	aio_lstat = EIO_LSTAT
		1167	aio_statvfs = EIO_STATVFS
1596	PPCODE:	1168	PPCODE:
1597	{	1169	{
1598	dREQ;	1170	dREQ;
1599		1171
1600	req->ptr2 = malloc (sizeof (Stat_t));
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);	1172	req->sv1 = newSVsv (fh_or_path);
1609		1173
1610	if (SvPOK (fh_or_path))	1174	if (SvPOK (req->sv1))
1611	{	1175	{
1612	req->type = ix;	1176	req->type = ix;
1613	req->ptr1 = SvPVbyte_nolen (req->sv1);	1177	req->ptr1 = SvPVbyte_nolen (req->sv1);
1614	}	1178	}
1615	else	1179	else
1616	{	1180	{
1617	req->type = REQ_FSTAT;	1181	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1182	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1619	}	1183	}
1620		1184
1621	REQ_SEND;	1185	REQ_SEND;
1622	}	1186	}
		1187
		1188	UV
		1189	major (UV dev)
		1190	ALIAS:
		1191	minor = 1
		1192	CODE:
		1193	RETVAL = ix ? major (dev) : minor (dev);
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	UV
		1198	makedev (UV maj, UV min)
		1199	CODE:
		1200	RETVAL = makedev (maj, min);
		1201	OUTPUT:
		1202	RETVAL
1623		1203
1624	void	1204	void
1625	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1205	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1626	PPCODE:	1206	PPCODE:
1627	{	1207	{
…		…
1629		1209
1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1210	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1211	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1632	req->sv1 = newSVsv (fh_or_path);	1212	req->sv1 = newSVsv (fh_or_path);
1633		1213
1634	if (SvPOK (fh_or_path))	1214	if (SvPOK (req->sv1))
1635	{	1215	{
1636	req->type = REQ_UTIME;	1216	req->type = EIO_UTIME;
1637	req->ptr1 = SvPVbyte_nolen (req->sv1);	1217	req->ptr1 = SvPVbyte_nolen (req->sv1);
1638	}	1218	}
1639	else	1219	else
1640	{	1220	{
1641	req->type = REQ_FUTIME;	1221	req->type = EIO_FUTIME;
1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1222	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1643	}	1223	}
1644		1224
1645	REQ_SEND;	1225	REQ_SEND;
1646	}	1226	}
…		…
1652	dREQ;	1232	dREQ;
1653		1233
1654	req->sv1 = newSVsv (fh_or_path);	1234	req->sv1 = newSVsv (fh_or_path);
1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1235	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1656		1236
1657	if (SvPOK (fh_or_path))	1237	if (SvPOK (req->sv1))
1658	{	1238	{
1659	req->type = REQ_TRUNCATE;	1239	req->type = EIO_TRUNCATE;
1660	req->ptr1 = SvPVbyte_nolen (req->sv1);	1240	req->ptr1 = SvPVbyte_nolen (req->sv1);
1661	}	1241	}
1662	else	1242	else
1663	{	1243	{
1664	req->type = REQ_FTRUNCATE;	1244	req->type = EIO_FTRUNCATE;
1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1245	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1666	}	1246	}
1667		1247
1668	REQ_SEND;	1248	REQ_SEND;
1669	}	1249	}
1670		1250
1671	void	1251	void
1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1252	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1253	ALIAS:
		1254	aio_chmod = EIO_CHMOD
		1255	aio_mkdir = EIO_MKDIR
1673	PPCODE:	1256	PPCODE:
1674	{	1257	{
1675	dREQ;	1258	dREQ;
1676		1259
1677	req->mode = mode;	1260	req->int2 = mode;
1678	req->sv1 = newSVsv (fh_or_path);	1261	req->sv1 = newSVsv (fh_or_path);
1679		1262
1680	if (SvPOK (fh_or_path))	1263	if (SvPOK (req->sv1))
1681	{	1264	{
1682	req->type = REQ_CHMOD;	1265	req->type = ix;
1683	req->ptr1 = SvPVbyte_nolen (req->sv1);	1266	req->ptr1 = SvPVbyte_nolen (req->sv1);
1684	}	1267	}
1685	else	1268	else
1686	{	1269	{
1687	req->type = REQ_FCHMOD;	1270	req->type = EIO_FCHMOD;
1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1271	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1689	}	1272	}
1690		1273
1691	REQ_SEND;	1274	REQ_SEND;
1692	}	1275	}
…		…
1699		1282
1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1283	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1284	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1702	req->sv1 = newSVsv (fh_or_path);	1285	req->sv1 = newSVsv (fh_or_path);
1703		1286
1704	if (SvPOK (fh_or_path))	1287	if (SvPOK (req->sv1))
1705	{	1288	{
1706	req->type = REQ_CHOWN;	1289	req->type = EIO_CHOWN;
1707	req->ptr1 = SvPVbyte_nolen (req->sv1);	1290	req->ptr1 = SvPVbyte_nolen (req->sv1);
1708	}	1291	}
1709	else	1292	else
1710	{	1293	{
1711	req->type = REQ_FCHOWN;	1294	req->type = EIO_FCHOWN;
1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1295	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1713	}	1296	}
1714		1297
1715	REQ_SEND;	1298	REQ_SEND;
1716	}	1299	}
1717		1300
1718	void	1301	void
		1302	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1303	PPCODE:
		1304	{
		1305	dREQ;
		1306
		1307	req->type = EIO_READDIR;
		1308	req->sv1 = newSVsv (pathname);
		1309	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1310	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1311
		1312	if (flags & EIO_READDIR_DENTS)
		1313	req->int1 |= EIO_READDIR_CUSTOM2;
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1319	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1720	ALIAS:	1320	ALIAS:
1721	aio_unlink = REQ_UNLINK	1321	aio_unlink = EIO_UNLINK
1722	aio_rmdir = REQ_RMDIR	1322	aio_rmdir = EIO_RMDIR
1723	aio_readdir = REQ_READDIR	1323	aio_readdir = EIO_READDIR
1724	PPCODE:	1324	PPCODE:
1725	{	1325	{
1726	dREQ;	1326	dREQ;
1727		1327
1728	req->type = ix;	1328	req->type = ix;
…		…
1731		1331
1732	REQ_SEND;	1332	REQ_SEND;
1733	}	1333	}
1734		1334
1735	void	1335	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
1746	REQ_SEND;
1747	}
1748
1749	void
1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1336	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1751	ALIAS:	1337	ALIAS:
1752	aio_link = REQ_LINK	1338	aio_link = EIO_LINK
1753	aio_symlink = REQ_SYMLINK	1339	aio_symlink = EIO_SYMLINK
1754	aio_rename = REQ_RENAME	1340	aio_rename = EIO_RENAME
1755	PPCODE:	1341	PPCODE:
1756	{	1342	{
1757	dREQ;	1343	dREQ;
1758		1344
1759	req->type = ix;	1345	req->type = ix;
1760	req->sv2 = newSVsv (oldpath);	1346	req->sv1 = newSVsv (oldpath);
		1347	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1348	req->sv2 = newSVsv (newpath);
1761	req->ptr2 = SvPVbyte_nolen (req->sv2);	1349	req->ptr2 = SvPVbyte_nolen (req->sv2);
1762	req->sv1 = newSVsv (newpath);
1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1764		1350
1765	REQ_SEND;	1351	REQ_SEND;
1766	}	1352	}
1767		1353
1768	void	1354	void
1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1355	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1770	PPCODE:	1356	PPCODE:
1771	{	1357	{
1772	dREQ;	1358	dREQ;
1773		1359
1774	req->type = REQ_MKNOD;	1360	req->type = EIO_MKNOD;
1775	req->sv1 = newSVsv (pathname);	1361	req->sv1 = newSVsv (pathname);
1776	req->ptr1 = SvPVbyte_nolen (req->sv1);	1362	req->ptr1 = SvPVbyte_nolen (req->sv1);
1777	req->mode = (mode_t)mode;	1363	req->int2 = (mode_t)mode;
1778	req->offs = dev;	1364	req->offs = dev;
1779		1365
1780	REQ_SEND;	1366	REQ_SEND;
1781	}	1367	}
1782		1368
1783	void	1369	void
		1370	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1371	ALIAS:
		1372	aio_mtouch = EIO_MTOUCH
		1373	aio_msync = EIO_MSYNC
		1374	PPCODE:
		1375	{
		1376	STRLEN svlen;
		1377	char *svptr = SvPVbyte (data, svlen);
		1378	UV len = SvUV (length);
		1379
		1380	if (offset < 0)
		1381	offset += svlen;
		1382
		1383	if (offset < 0 || offset > svlen)
		1384	croak ("offset outside of scalar");
		1385
		1386	if (!SvOK (length) || len + offset > svlen)
		1387	len = svlen - offset;
		1388
		1389	{
		1390	dREQ;
		1391
		1392	req->type = ix;
		1393	req->sv2 = SvREFCNT_inc (data);
		1394	req->ptr2 = (char *)svptr + offset;
		1395	req->size = len;
		1396	req->int1 = flags;
		1397
		1398	REQ_SEND;
		1399	}
		1400	}
		1401
		1402	void
		1403	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1404	PPCODE:
		1405	{
		1406	STRLEN svlen;
		1407	char *svptr = SvPVbyte (data, svlen);
		1408	UV len = SvUV (length);
		1409
		1410	if (offset < 0)
		1411	offset += svlen;
		1412
		1413	if (offset < 0 || offset > svlen)
		1414	croak ("offset outside of scalar");
		1415
		1416	if (!SvOK (length) || len + offset > svlen)
		1417	len = svlen - offset;
		1418
		1419	{
		1420	dREQ;
		1421
		1422	req->type = EIO_MLOCK;
		1423	req->sv2 = SvREFCNT_inc (data);
		1424	req->ptr2 = (char *)svptr + offset;
		1425	req->size = len;
		1426
		1427	REQ_SEND;
		1428	}
		1429	}
		1430
		1431	void
		1432	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1433	PPCODE:
		1434	{
		1435	dREQ;
		1436
		1437	req->type = EIO_MLOCKALL;
		1438	req->int1 = flags;
		1439
		1440	REQ_SEND;
		1441	}
		1442
		1443	void
1784	aio_busy (double delay, SV *callback=&PL_sv_undef)	1444	aio_busy (double delay, SV *callback=&PL_sv_undef)
1785	PPCODE:	1445	PPCODE:
1786	{	1446	{
1787	dREQ;	1447	dREQ;
1788		1448
1789	req->type = REQ_BUSY;	1449	req->type = EIO_BUSY;
1790	req->nv1 = delay < 0. ? 0. : delay;	1450	req->nv1 = delay < 0. ? 0. : delay;
1791		1451
1792	REQ_SEND;	1452	REQ_SEND;
1793	}	1453	}
1794		1454
1795	void	1455	void
1796	aio_group (SV *callback=&PL_sv_undef)	1456	aio_group (SV *callback=&PL_sv_undef)
1797	PROTOTYPE: ;$
1798	PPCODE:	1457	PPCODE:
1799	{	1458	{
1800	dREQ;	1459	dREQ;
1801		1460
1802	req->type = REQ_GROUP;	1461	req->type = EIO_GROUP;
1803		1462
1804	req_send (req);	1463	req_submit (req);
1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1464	XPUSHs (req_sv (req, aio_grp_stash));
1806	}	1465	}
1807		1466
1808	void	1467	void
1809	aio_nop (SV *callback=&PL_sv_undef)	1468	aio_nop (SV *callback=&PL_sv_undef)
		1469	ALIAS:
		1470	aio_nop = EIO_NOP
		1471	aio_sync = EIO_SYNC
1810	PPCODE:	1472	PPCODE:
1811	{	1473	{
1812	dREQ;	1474	dREQ;
1813		1475
1814	req->type = REQ_NOP;	1476	req->type = ix;
1815		1477
1816	REQ_SEND;	1478	REQ_SEND;
1817	}	1479	}
1818		1480
1819	int	1481	int
1820	aioreq_pri (int pri = 0)	1482	aioreq_pri (int pri = 0)
1821	PROTOTYPE: ;$
1822	CODE:	1483	CODE:
1823	RETVAL = next_pri - PRI_BIAS;	1484	RETVAL = next_pri;
1824	if (items > 0)	1485	if (items > 0)
1825	{	1486	{
1826	if (pri < PRI_MIN) pri = PRI_MIN;	1487	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1827	if (pri > PRI_MAX) pri = PRI_MAX;	1488	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1828	next_pri = pri + PRI_BIAS;	1489	next_pri = pri;
1829	}	1490	}
1830	OUTPUT:	1491	OUTPUT:
1831	RETVAL	1492	RETVAL
1832		1493
1833	void	1494	void
1834	aioreq_nice (int nice = 0)	1495	aioreq_nice (int nice = 0)
1835	CODE:	1496	CODE:
1836	nice = next_pri - nice;	1497	nice = next_pri - nice;
1837	if (nice < PRI_MIN) nice = PRI_MIN;	1498	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1838	if (nice > PRI_MAX) nice = PRI_MAX;	1499	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1839	next_pri = nice + PRI_BIAS;	1500	next_pri = nice;
1840		1501
1841	void	1502	void
1842	flush ()	1503	flush ()
1843	PROTOTYPE:
1844	CODE:	1504	CODE:
1845	while (nreqs)	1505	while (eio_nreqs ())
1846	{	1506	{
1847	poll_wait ();	1507	poll_wait ();
1848	poll_cb ();	1508	poll_cb ();
1849	}	1509	}
1850		1510
1851	int	1511	int
1852	poll()	1512	poll ()
1853	PROTOTYPE:
1854	CODE:	1513	CODE:
1855	poll_wait ();	1514	poll_wait ();
1856	RETVAL = poll_cb ();	1515	RETVAL = poll_cb ();
1857	OUTPUT:	1516	OUTPUT:
1858	RETVAL	1517	RETVAL
1859		1518
1860	int	1519	int
1861	poll_fileno()	1520	poll_fileno ()
1862	PROTOTYPE:
1863	CODE:	1521	CODE:
1864	RETVAL = respipe [0];	1522	RETVAL = s_epipe_fd (&respipe);
1865	OUTPUT:	1523	OUTPUT:
1866	RETVAL	1524	RETVAL
1867		1525
1868	int	1526	int
1869	poll_cb(...)	1527	poll_cb (...)
1870	PROTOTYPE:	1528	PROTOTYPE:
1871	CODE:	1529	CODE:
1872	RETVAL = poll_cb ();	1530	RETVAL = poll_cb ();
1873	OUTPUT:	1531	OUTPUT:
1874	RETVAL	1532	RETVAL
1875		1533
1876	void	1534	void
1877	poll_wait()	1535	poll_wait ()
1878	PROTOTYPE:
1879	CODE:	1536	CODE:
1880	poll_wait ();	1537	poll_wait ();
1881		1538
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	1539	int
1920	nreqs()	1540	nreqs ()
1921	PROTOTYPE:
1922	CODE:	1541	CODE:
1923	RETVAL = nreqs;	1542	RETVAL = eio_nreqs ();
1924	OUTPUT:	1543	OUTPUT:
1925	RETVAL	1544	RETVAL
1926		1545
1927	int	1546	int
1928	nready()	1547	nready ()
1929	PROTOTYPE:
1930	CODE:	1548	CODE:
1931	RETVAL = get_nready ();	1549	RETVAL = eio_nready ();
1932	OUTPUT:	1550	OUTPUT:
1933	RETVAL	1551	RETVAL
1934		1552
1935	int	1553	int
1936	npending()	1554	npending ()
1937	PROTOTYPE:
1938	CODE:	1555	CODE:
1939	RETVAL = get_npending ();	1556	RETVAL = eio_npending ();
1940	OUTPUT:	1557	OUTPUT:
1941	RETVAL	1558	RETVAL
1942		1559
1943	int	1560	int
1944	nthreads()	1561	nthreads ()
1945	PROTOTYPE:
1946	CODE:	1562	CODE:
1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1563	RETVAL = eio_nthreads ();
1948	RETVAL = started;
1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1950	OUTPUT:	1564	OUTPUT:
1951	RETVAL	1565	RETVAL
1952		1566
		1567	int
		1568	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1569	CODE:
		1570	RETVAL = posix_fadvise (fh, offset, length, advice);
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	ssize_t
		1575	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1576	CODE:
		1577	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	void
		1582	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1583	PPCODE:
		1584	sv_unmagic (scalar, MMAP_MAGIC);
		1585	{
		1586	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1587	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1588	if (addr == (void *)-1)
		1589	XSRETURN_NO;
		1590
		1591	sv_force_normal (scalar);
		1592
		1593	/* we store the length in mg_obj, as namlen is I32 :/ */
		1594	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1595	->mg_obj = (SV *)length;
		1596
		1597	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1598
		1599	if (!(prot & PROT_WRITE))
		1600	SvREADONLY_on (scalar);
		1601
		1602	if (SvLEN (scalar))
		1603	Safefree (SvPVX (scalar));
		1604
		1605	SvPVX (scalar) = (char *)addr;
		1606	SvCUR_set (scalar, length);
		1607	SvLEN_set (scalar, 0);
		1608	SvPOK_only (scalar);
		1609
		1610	XSRETURN_YES;
		1611	}
		1612
		1613	void
		1614	munmap (SV *scalar)
		1615	CODE:
		1616	sv_unmagic (scalar, MMAP_MAGIC);
		1617
		1618	int
		1619	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1620	ALIAS:
		1621	mprotect = 1
		1622	CODE:
		1623	{
		1624	STRLEN svlen;
		1625	void *addr = SvPVbyte (scalar, svlen);
		1626	size_t len = SvUV (length);
		1627
		1628	if (offset < 0)
		1629	offset += svlen;
		1630
		1631	if (offset < 0 || offset > svlen)
		1632	croak ("offset outside of scalar");
		1633
		1634	if (!SvOK (length) || len + offset > svlen)
		1635	len = svlen - offset;
		1636
		1637	addr = (void *)(((intptr_t)addr) + offset);
		1638	eio_page_align (&addr, &len);
		1639
		1640	switch (ix)
		1641	{
		1642	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1643	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1644	}
		1645	}
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1651	CODE:
		1652	{
		1653	STRLEN svlen;
		1654	void *addr = SvPVbyte (scalar, svlen);
		1655	size_t len = SvUV (length);
		1656
		1657	if (offset < 0)
		1658	offset += svlen;
		1659
		1660	if (offset < 0 || offset > svlen)
		1661	croak ("offset outside of scalar");
		1662
		1663	if (!SvOK (length) || len + offset > svlen)
		1664	len = svlen - offset;
		1665
		1666	addr = (void *)(((intptr_t)addr) + offset);
		1667	eio_page_align (&addr, &len);
		1668	#if _POSIX_MEMLOCK_RANGE
		1669	RETVAL = munlock (addr, len);
		1670	#else
		1671	RETVAL = ((errno = ENOSYS), -1);
		1672	#endif
		1673	}
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	int
		1678	munlockall ()
		1679	CODE:
		1680	#if _POSIX_MEMLOCK
		1681	munlockall ();
		1682	#else
		1683	RETVAL = -1;
		1684	errno = ENOSYS;
		1685	#endif
		1686	OUTPUT:
		1687	RETVAL
		1688
		1689	void _on_next_submit (SV *cb)
		1690	CODE:
		1691	SvREFCNT_dec (on_next_submit);
		1692	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1693
1953	PROTOTYPES: DISABLE	1694	PROTOTYPES: DISABLE
1954		1695
1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1696	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1956		1697
1957	void	1698	void
1958	cancel (aio_req_ornot req)	1699	cancel (aio_req_ornot req)
1959	CODE:	1700	CODE:
1960	req_cancel (req);	1701	eio_cancel (req);
1961		1702
1962	void	1703	void
1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1704	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1964	CODE:	1705	PPCODE:
		1706	{
		1707	if (GIMME_V != G_VOID)
		1708	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1709
		1710	if (items > 1)
		1711	{
		1712	SV *cb_cv =get_cb (callback);
		1713
1965	SvREFCNT_dec (req->callback);	1714	SvREFCNT_dec (req->callback);
1966	req->callback = newSVsv (callback);	1715	req->callback = SvREFCNT_inc (cb_cv);
		1716	}
		1717	}
1967		1718
1968	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1719	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1969		1720
1970	void	1721	void
1971	add (aio_req grp, ...)	1722	add (aio_req grp, ...)
1972	PPCODE:	1723	PPCODE:
1973	{	1724	{
1974	int i;	1725	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		1726
1980	if (grp->int1 == 2)	1727	if (grp->int1 == 2)
1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1728	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1982		1729
1983	for (i = 1; i < items; ++i )	1730	for (i = 1; i < items; ++i )
1984	{	1731	{
		1732	aio_req req;
		1733
1985	if (GIMME_V != G_VOID)	1734	if (GIMME_V != G_VOID)
1986	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1735	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1987		1736
1988	req = SvAIO_REQ (ST (i));	1737	req = SvAIO_REQ (ST (i));
1989		1738
1990	if (req)	1739	if (req)
1991	{	1740	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	}	1741	}
2004	}	1742	}
2005		1743
2006	void	1744	void
2007	cancel_subs (aio_req_ornot req)	1745	cancel_subs (aio_req_ornot req)
…		…
2016	AV *av;	1754	AV *av;
2017		1755
2018	grp->errorno = errno;	1756	grp->errorno = errno;
2019		1757
2020	av = newAV ();	1758	av = newAV ();
		1759	av_extend (av, items - 1);
2021		1760
2022	for (i = 1; i < items; ++i )	1761	for (i = 1; i < items; ++i )
2023	av_push (av, newSVsv (ST (i)));	1762	av_push (av, newSVsv (ST (i)));
2024		1763
2025	SvREFCNT_dec (grp->sv1);	1764	SvREFCNT_dec (grp->sv1);
…		…
2032	grp->errorno = errorno;	1771	grp->errorno = errorno;
2033		1772
2034	void	1773	void
2035	limit (aio_req grp, int limit)	1774	limit (aio_req grp, int limit)
2036	CODE:	1775	CODE:
2037	grp->int2 = limit;	1776	eio_grp_limit (grp, limit);
2038	aio_grp_feed (grp);
2039		1777
2040	void	1778	void
2041	feed (aio_req grp, SV *callback=&PL_sv_undef)	1779	feed (aio_req grp, SV *callback=&PL_sv_undef)
2042	CODE:	1780	CODE:
2043	{	1781	{
2044	SvREFCNT_dec (grp->sv2);	1782	SvREFCNT_dec (grp->sv2);
2045	grp->sv2 = newSVsv (callback);	1783	grp->sv2 = newSVsv (callback);
		1784	grp->feed = aio_grp_feed;
2046		1785
2047	if (grp->int2 <= 0)	1786	if (grp->int2 <= 0)
2048	grp->int2 = 2;	1787	grp->int2 = 2;
2049		1788
2050	aio_grp_feed (grp);	1789	eio_grp_limit (grp, grp->int2);
2051	}	1790	}
2052		1791

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