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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs.
Revision 1.179 by root, Fri Jan 7 21:47:15 2011 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
		20
		21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
		68	# include <sys/time.h>
		69	# include <sys/select.h>
		70	# include <unistd.h>
23	#include <utime.h>	71	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	72	# include <signal.h>
31	# elif __hpux	73	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	74
33	# elif __solaris /* not yet */	75	#endif
34	# include <sys/sendfile.h>	76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	#ifndef POSIX_FADV_NORMAL
		127	# define POSIX_FADV_NORMAL 0
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if !HAVE_POSIX_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	#endif
		152	#ifndef POSIX_MADV_SEQUENTIAL
		153	# define POSIX_MADV_SEQUENTIAL 0
		154	#endif
		155	#ifndef POSIX_MADV_RANDOM
		156	# define POSIX_MADV_RANDOM 0
		157	#endif
		158	#ifndef POSIX_MADV_WILLNEED
		159	# define POSIX_MADV_WILLNEED 0
		160	#endif
		161	#ifndef POSIX_MADV_DONTNEED
		162	# define POSIX_MADV_DONTNEED 0
		163	#endif
		164
		165	#if !HAVE_POSIX_MADVISE
		166	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		167	#endif
		168
		169	#ifndef PROT_NONE
		170	# define PROT_NONE 0
		171	#endif
		172	#ifndef PROT_READ
		173	# define PROT_READ 0
		174	#endif
		175	#ifndef PROT_WRITE
		176	# define PROT_READ 0
		177	#endif
		178	#ifndef PROT_EXEC
		179	# define PROT_EXEC 0
		180	#endif
		181
		182	#ifndef ST_NODEV
		183	# define ST_NODEV 0
		184	#endif
		185	#ifndef ST_NOEXEC
		186	# define ST_NOEXEC 0
		187	#endif
		188	#ifndef ST_SYNCHRONOUS
		189	# define ST_SYNCHRONOUS 0
		190	#endif
		191	#ifndef ST_MANDLOCK
		192	# define ST_MANDLOCK 0
		193	#endif
		194	#ifndef ST_WRITE
		195	# define ST_WRITE 0
		196	#endif
		197	#ifndef ST_APPEND
		198	# define ST_APPEND 0
		199	#endif
		200	#ifndef ST_IMMUTABLE
		201	# define ST_IMMUTABLE 0
		202	#endif
		203	#ifndef ST_NOATIME
		204	# define ST_NOATIME 0
		205	#endif
		206	#ifndef ST_NODIRATIME
		207	# define ST_NODIRATIME 0
		208	#endif
		209	#ifndef ST_RELATIME
		210	# define ST_RELATIME 0
		211	#endif
		212
		213	#ifndef MAP_ANONYMOUS
		214	# ifdef MAP_ANON
		215	# define MAP_ANONYMOUS MAP_ANON
35	# else	216	# else
36	# error sendfile support requested but not available	217	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	218	# endif
38	#endif	219	#endif
39		220	#ifndef MAP_HUGETLB
40	/* number of seconds after which idle threads exit */	221	# define MAP_HUGETLB 0
41	#define IDLE_TIMEOUT 10
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif	222	#endif
		223	#ifndef MAP_LOCKED
		224	# define MAP_LOCKED 0
		225	#endif
		226	#ifndef MAP_NORESERVE
		227	# define MAP_NORESERVE 0
		228	#endif
		229	#ifndef MAP_POPULATE
		230	# define MAP_POPULATE 0
		231	#endif
		232	#ifndef MAP_NONBLOCK
		233	# define MAP_NONBLOCK 0
		234	#endif
47		235
48	/* buffer size for various temporary buffers */	236	#ifndef PAGESIZE
49	#define AIO_BUFSIZE 65536	237	# define PAGESIZE sysconf (_SC_PAGESIZE)
		238	#endif
50		239
51	#define dBUF \	240	static int req_invoke (eio_req *req);
52	char *aio_buf; \	241	#define EIO_FINISH(req) req_invoke (req)
53	LOCK (wrklock); \	242	static void req_destroy (eio_req *grp);
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	243	#define EIO_DESTROY(req) req_destroy (req)
55	UNLOCK (wrklock); \
56	if (!aio_buf) \
57	return -1;
58
59	typedef SV SV8; /* byte-sv, used for argument-checking */
60		244
61	enum {	245	enum {
62	REQ_QUIT,	246	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	247	};
77		248
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
79	#define AIO_GRP_KLASS "IO::AIO::GRP"
80		250
81	typedef struct aio_cb
82	{
83	struct aio_cb *volatile next;
84
85	SV *callback;
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92
93	STRLEN stroffset;
94	int type;
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98
99	unsigned char flags;
100	unsigned char pri;
101
102	SV *self; /* the perl counterpart of this request, if any */
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
104	} aio_cb;
105
106	enum {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */
108	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};
111
112	typedef aio_cb *aio_req;	251	typedef eio_req *aio_req;
113	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
114		253
115	enum {	254	static SV *on_next_submit;
116	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
117	PRI_MAX = 4,	256	static int max_outstanding;
118		257
119	DEFAULT_PRI = 0,	258	static s_epipe respipe;
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123		259
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135
136	static thread_t main_tid;
137	static int main_sig;
138	static int block_sig_level;
139
140	void block_sig ()
141	{
142	sigset_t ss;
143
144	if (block_sig_level++)
145	return;
146
147	if (!main_sig)
148	return;
149
150	sigemptyset (&ss);
151	sigaddset (&ss, main_sig);
152	pthread_sigmask (SIG_BLOCK, &ss, 0);
153	}
154
155	void unblock_sig ()
156	{
157	sigset_t ss;
158
159	if (--block_sig_level)
160	return;
161
162	if (!main_sig)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{
195	closedir (wrk->dirp);
196	wrk->dirp = 0;
197	}
198
199	if (wrk->dbuf)
200	{
201	free (wrk->dbuf);
202	wrk->dbuf = 0;
203	}
204	}
205
206	static void worker_free (worker *wrk)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;
301
302	--q->size;
303
304	for (pri = NUM_PRI; pri--; )
305	{
306	aio_req req = q->qs[pri];
307
308	if (req)
309	{
310	if (!(q->qs[pri] = req->next))
311	q->qe[pri] = 0;
312
313	return req;
314	}
315	}
316
317	abort ();
318	}
319
320	static int poll_cb ();
321	static int req_invoke (aio_req req);
322	static void req_free (aio_req req);	260	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	261	static void req_cancel (aio_req req);
324		262
		263	static void want_poll (void)
		264	{
		265	/* write a dummy byte to the pipe so fh becomes ready */
		266	s_epipe_signal (&respipe);
		267	}
		268
		269	static void done_poll (void)
		270	{
		271	/* read any signals sent by the worker threads */
		272	s_epipe_drain (&respipe);
		273	}
		274
325	/* must be called at most once */	275	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
327	{	277	{
328	if (!req->self)	278	if (!req->self)
329	{	279	{
330	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	282	}
333		283
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	285	}
336		286
337	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
338	{	288	{
339	MAGIC *mg;	289	MAGIC *mg;
340		290
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	291	if (!SvROK (sv)
		292	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		293	&& SvSTASH (SvRV (sv)) != aio_req_stash
		294	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
343		296
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		298
346	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	300	}
348		301
349	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
350	{	303	{
351	block_sig ();	304	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	305	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	306	dSP;
360		307
361	ENTER;	308	ENTER;
362	SAVETMPS;	309	SAVETMPS;
363	PUSHMARK (SP);	310	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	311	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	312	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	314	SPAGAIN;
368	FREETMPS;	315	FREETMPS;
369	LEAVE;	316	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	317	}
380
381	unblock_sig ();
382	}	318	}
383		319
384	static void aio_grp_dec (aio_req grp)	320	static void req_submit (eio_req *req)
385	{	321	{
386	--grp->size;	322	eio_submit (req);
387		323
388	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	325	{
394	block_sig ();	326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
395		328
396	if (!req_invoke (grp))	329	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		330
403	req_free (grp);	331	PUSHMARK (SP);
404	unblock_sig ();	332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
405	}	334	}
406	}	335	}
407		336
408	static int req_invoke (aio_req req)	337	static int req_invoke (eio_req *req)
409	{	338	{
410	dSP;
411
412	if (req->flags & FLAG_SV1_RO_OFF)	339	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv1);	340	SvREADONLY_off (req->sv2);
414		341
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	342	if (!EIO_CANCELLED (req) && req->callback)
416	{	343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
417	ENTER;	348	ENTER;
418	SAVETMPS;	349	SAVETMPS;
419	PUSHMARK (SP);	350	PUSHMARK (SP);
420	EXTEND (SP, 1);	351	EXTEND (SP, 1);
421		352
		353	/* do not recreate the result IV from scratch each time */
		354	if (expect_true (sv_result_cache))
		355	{
		356	sv_result = sv_result_cache; sv_result_cache = 0;
		357	SvIV_set (sv_result, req->result);
		358	SvIOK_only (sv_result);
		359	}
		360	else
		361	{
		362	sv_result = newSViv (req->result);
		363	SvREADONLY_on (sv_result);
		364	}
		365
422	switch (req->type)	366	switch (req->type)
423	{	367	{
424	case REQ_READDIR:	368	case EIO_READDIR:
425	{	369	{
426	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
427		371
428	if (req->result >= 0)	372	if (req->result >= 0)
429	{	373	{
430	int i;	374	int i;
431	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	377	AV *av = newAV ();
433		378
434	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
435		380
436	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
437	{	382	{
438	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		386
		387	if (req->int1 & EIO_READDIR_CUSTOM2)
		388	{
		389	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		390	AV *avent = newAV ();
		391
		392	av_extend (avent, 2);
		393
		394	if (!sv_type [ent->type])
		395	{
		396	sv_type [ent->type] = newSViv (ent->type);
		397	SvREADONLY_on (sv_type [ent->type]);
		398	}
		399
		400	av_store (avent, 0, namesv);
		401	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		402	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		403
		404	av_store (av, i, newRV_noinc ((SV *)avent));
		405	}
		406	else
440	av_store (av, i, sv);	407	av_store (av, i, namesv);
		408
		409	++ent;
		410	}
		411	else
		412	{
		413	SV *name = newSVpv (names, 0);
		414	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
442	}	417	}
443		418
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	420	}
446		421
447	PUSHs (rv);	422	PUSHs (rv);
		423
		424	if (req->int1 & EIO_READDIR_CUSTOM1)
		425	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	426	}
449	break;	427	break;
450		428
451	case REQ_OPEN:	429	case EIO_OPEN:
452	{	430	{
453	/* convert fd to fh */	431	/* convert fd to fh */
454	SV *fh;	432	SV *fh = &PL_sv_undef;
455		433
456	PUSHs (sv_2mortal (newSViv (req->result)));	434	if (req->result >= 0)
457	PUTBACK;	435	{
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	436	GV *gv = (GV *)sv_newmortal ();
459	SPAGAIN;	437	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		438	char sym [64];
		439	int symlen;
		440
		441	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		442	gv_init (gv, aio_stash, sym, symlen, 0);
460		443
461	fh = POPs;	444	symlen = snprintf (
462	PUSHMARK (SP);	445	sym,
		446	sizeof (sym),
		447	"%s&=%d",
		448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		449	(int)req->result
		450	);
		451
		452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		453	fh = (SV *)gv;
		454	}
		455
463	XPUSHs (fh);	456	PUSHs (fh);
464	}	457	}
465	break;	458	break;
466		459
		460	case EIO_STATVFS:
		461	case EIO_FSTATVFS:
		462	{
		463	SV *rv = &PL_sv_undef;
		464
		465	if (req->result >= 0)
		466	{
		467	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		468	HV *hv = newHV ();
		469
		470	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		471
		472	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		473	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		474	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		475	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		476	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		477	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		478	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		479	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		480	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		481	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		482	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		483	}
		484
		485	PUSHs (rv);
		486	}
		487
		488	break;
		489
467	case REQ_GROUP:	490	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
469		492
470	if (req->sv1)	493	if (req->sv1)
471	{	494	{
472	int i;	495	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
478	}	501	}
479	break;	502	break;
480		503
481	case REQ_NOP:	504	case EIO_NOP:
482	case REQ_BUSY:	505	case EIO_BUSY:
483	break;	506	break;
484		507
485	case REQ_READLINK:	508	case EIO_READLINK:
486	if (req->result > 0)	509	if (req->result > 0)
487	{	510	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
488	SvCUR_set (req->sv2, req->result);
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);
491	}
492	break;	511	break;
493		512
494	case REQ_STAT:	513	case EIO_STAT:
495	case REQ_LSTAT:	514	case EIO_LSTAT:
496	case REQ_FSTAT:	515	case EIO_FSTAT:
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
498	PL_laststatval = req->result;	517	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
501	break;	520	break;
502		521
503	case REQ_READ:	522	case EIO_READ:
		523	{
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	524	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;	525	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
507	break;	530	break;
508		531
		532	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		533	if (req->result > 0)
		534	SvIV_set (sv_result, 0);
		535	/* FALLTHROUGH */
		536
509	default:	537	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
511	break;	539	break;
512	}	540	}
513		541
514	errno = req->errorno;	542	errno = req->errorno;
515		543
516	PUTBACK;	544	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	546	SPAGAIN;
		547
		548	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		549	SvREFCNT_dec (sv_result);
		550	else
		551	sv_result_cache = sv_result;
519		552
520	FREETMPS;	553	FREETMPS;
521	LEAVE;	554	LEAVE;
		555
		556	PUTBACK;
522	}	557	}
523		558
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	559	return !!SvTRUE (ERRSV);
539	}	560	}
540		561
541	static void req_free (aio_req req)	562	static void req_destroy (aio_req req)
542	{	563	{
543	if (req->self)	564	if (req->self)
544	{	565	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	566	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	567	SvREFCNT_dec (req->self);
…		…
548		569
549	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
551	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
552		573
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	574	Safefree (req);
557	}	575	}
558		576
559	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
560	{	578	{
561	aio_req sub;	579	aio_req sub;
562		580
563	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
564	return;	582	return;
565		583
566	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	585	grp->sv2 = 0;
568		586
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	588	}
572		589
573	static void req_cancel (aio_req req)	590	static void
		591	create_respipe (void)
574	{	592	{
575	req->flags |= FLAG_CANCELLED;	593	if (s_epipe_renew (&respipe))
576		594	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	595	}
579		596
580	static void *aio_proc(void *arg);
581
582	static void start_thread (void)
583	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()	597	static void poll_wait (void)
676	{	598	{
677	fd_set rfd;
678
679	while (nreqs)	599	while (eio_nreqs ())
680	{	600	{
681	int size;	601	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	602
		603	X_LOCK (reslock);
683	size = res_queue.size;	604	size = res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	605	X_UNLOCK (reslock);
685		606
686	if (size)	607	if (size)
687	return;	608	return;
688		609
689	maybe_start_thread ();	610	etp_maybe_start_thread ();
690		611
691	FD_ZERO(&rfd);	612	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	613	}
696	}	614	}
697		615
698	static int poll_cb ()	616	static int poll_cb (void)
699	{	617	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	618	for (;;)
713	{	619	{
714	for (;;)	620	int res = eio_poll ();
715	{
716	maybe_start_thread ();
717		621
718	LOCK (reslock);	622	if (res > 0)
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);	623	croak (0);
753	}
754		624
755	count++;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
756	}	626	return res;
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;
774		627
775	poll_wait ();	628	poll_wait ();
776
777	++maxreqs;
778	}	629	}
779
780	unblock_sig ();
781	return count;
782	}	630	}
783		631
784	static void create_pipe ()	632	static void atfork_child (void)
785	{	633	{
786	if (pipe (respipe))	634	create_respipe ();
787	croak ("unable to initialize result pipe");
788
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}	635	}
795		636
796	/*****************************************************************************/	637	/*****************************************************************************/
797	/* work around various missing functions */
798		638
799	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
800	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
801	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}
824
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif	642	#endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974		643
975	if (res < 0	644	#if !_POSIX_MEMORY_PROTECTION
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	645	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
977	#if __solaris	646	# define PROT_NONE 0
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	647	# define PROT_WRITE 0
		648	# define MAP_PRIVATE 0
		649	# define MAP_SHARED 0
		650	# define MAP_FIXED 0
979	#endif	651	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985		652
986	res = 0;	653	#define MMAP_MAGIC PERL_MAGIC_ext
987		654
988	while (count)	655	static int
989	{	656	mmap_free (pTHX_ SV *sv, MAGIC *mg)
990	ssize_t cnt;	657	{
991		658	int old_errno = errno;
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	659	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		660	errno = old_errno;
993		661
994	if (cnt <= 0)	662	mg->mg_obj = 0; /* just in case */
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999		663
1000	cnt = write (ofd, aio_buf, cnt);	664	SvREADONLY_off (sv);
1001		665
1002	if (cnt <= 0)	666	if (SvPVX (sv) != mg->mg_ptr)
1003	{	667	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007		668
1008	offset += cnt;	669	SvCUR_set (sv, 0);
1009	res += cnt;	670	SvPVX (sv) = 0;
1010	count -= cnt;	671	SvOK_off (sv);
1011	}
1012	}
1013		672
1014	return res;	673	return 0;
1015	}	674	}
1016		675
1017	/* read a full directory */	676	static MGVTBL mmap_vtbl = {
1018	static void scandir_ (aio_req req, worker *self)	677	0, 0, 0, 0, mmap_free
1019	{	678	};
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078		679
1079	/*****************************************************************************/	680	/*****************************************************************************/
1080		681
1081	static void *aio_proc (void *thr_arg)	682	static SV *
		683	get_cb (SV *cb_sv)
1082	{	684	{
1083	aio_req req;	685	SvGETMAGIC (cb_sv);
1084	struct timespec ts;	686	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}	687	}
1303		688
1304	#define dREQ \	689	#define dREQ \
		690	SV *cb_cv; \
1305	aio_req req; \	691	aio_req req; \
1306	int req_pri = next_pri; \	692	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \	693	next_pri = EIO_PRI_DEFAULT; \
1308	\	694	\
1309	if (SvOK (callback) && !SvROK (callback)) \	695	cb_cv = get_cb (callback); \
1310	croak ("callback must be undef or of reference type"); \
1311	\	696	\
1312	Newz (0, req, 1, aio_cb); \	697	Newz (0, req, 1, eio_req); \
1313	if (!req) \	698	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \	699	croak ("out of memory during eio_req allocation"); \
1315	\	700	\
1316	req->callback = newSVsv (callback); \	701	req->callback = SvREFCNT_inc (cb_cv); \
1317	req->pri = req_pri	702	req->pri = req_pri
1318		703
1319	#define REQ_SEND \	704	#define REQ_SEND \
		705	PUTBACK; \
1320	req_send (req); \	706	req_submit (req); \
		707	SPAGAIN; \
1321	\	708	\
1322	if (GIMME_V != G_VOID) \	709	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));	710	XPUSHs (req_sv (req, aio_req_stash));
1324		711
1325	MODULE = IO::AIO PACKAGE = IO::AIO	712	MODULE = IO::AIO PACKAGE = IO::AIO
1326		713
1327	PROTOTYPES: ENABLE	714	PROTOTYPES: ENABLE
1328		715
1329	BOOT:	716	BOOT:
1330	{	717	{
		718	static const struct {
		719	const char *name;
		720	IV iv;
		721	} *civ, const_iv[] = {
		722	# define const_niv(name, value) { # name, (IV) value },
		723	# define const_iv(name) { # name, (IV) name },
		724	# define const_eio(name) { # name, (IV) EIO_ ## name },
		725	const_iv (EXDEV)
		726	const_iv (ENOSYS)
		727	const_iv (O_RDONLY)
		728	const_iv (O_WRONLY)
		729	const_iv (O_RDWR)
		730	const_iv (O_CREAT)
		731	const_iv (O_TRUNC)
		732	const_iv (O_EXCL)
		733	const_iv (O_APPEND)
		734	#ifndef _WIN32
		735	const_iv (S_IFIFO)
		736	#endif
		737	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		738	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		739	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		740	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		741	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		742	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		743
		744	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		745	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		746	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		747	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		748	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		749
		750	const_iv (ST_RDONLY)
		751	const_iv (ST_NOSUID)
		752	const_iv (ST_NODEV)
		753	const_iv (ST_NOEXEC)
		754	const_iv (ST_SYNCHRONOUS)
		755	const_iv (ST_MANDLOCK)
		756	const_iv (ST_WRITE)
		757	const_iv (ST_APPEND)
		758	const_iv (ST_IMMUTABLE)
		759	const_iv (ST_NOATIME)
		760	const_iv (ST_NODIRATIME)
		761	const_iv (ST_RELATIME)
		762
		763	const_iv (PROT_NONE)
		764	const_iv (PROT_EXEC)
		765	const_iv (PROT_READ)
		766	const_iv (PROT_WRITE)
		767
		768	/*const_iv (MAP_FIXED)*/
		769	const_iv (MAP_PRIVATE)
		770	const_iv (MAP_SHARED)
		771	const_iv (MAP_ANONYMOUS)
		772
		773	/* linuxish */
		774	const_iv (MAP_HUGETLB)
		775	const_iv (MAP_LOCKED)
		776	const_iv (MAP_NORESERVE)
		777	const_iv (MAP_POPULATE)
		778	const_iv (MAP_NONBLOCK)
		779
		780	const_eio (MCL_FUTURE)
		781	const_eio (MCL_CURRENT)
		782
		783	const_eio (MS_ASYNC)
		784	const_eio (MS_INVALIDATE)
		785	const_eio (MS_SYNC)
		786
		787	const_eio (MT_MODIFY)
		788
		789	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		790	const_eio (SYNC_FILE_RANGE_WRITE)
		791	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		792
		793	const_eio (READDIR_DENTS)
		794	const_eio (READDIR_DIRS_FIRST)
		795	const_eio (READDIR_STAT_ORDER)
		796	const_eio (READDIR_FOUND_UNKNOWN)
		797
		798	const_eio (DT_UNKNOWN)
		799	const_eio (DT_FIFO)
		800	const_eio (DT_CHR)
		801	const_eio (DT_DIR)
		802	const_eio (DT_BLK)
		803	const_eio (DT_REG)
		804	const_eio (DT_LNK)
		805	const_eio (DT_SOCK)
		806	const_eio (DT_WHT)
		807	};
		808
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	809	aio_stash = gv_stashpv ("IO::AIO" , 1);
		810	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		811	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1332		812
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	813	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	814	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		815
		816	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		817
1341	create_pipe ();	818	create_respipe ();
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);	819
		820	if (eio_init (want_poll, done_poll) < 0)
		821	croak ("IO::AIO: unable to initialise eio library");
		822
		823	/* atfork child called in fifo order, so before eio's handler */
		824	X_THREAD_ATFORK (0, 0, atfork_child);
1343	}	825	}
1344		826
1345	void	827	void
1346	max_poll_reqs (int nreqs)	828	max_poll_reqs (int nreqs)
1347	PROTOTYPE: $	829	PROTOTYPE: $
1348	CODE:	830	CODE:
1349	max_poll_reqs = nreqs;	831	eio_set_max_poll_reqs (nreqs);
1350		832
1351	void	833	void
1352	max_poll_time (double nseconds)	834	max_poll_time (double nseconds)
1353	PROTOTYPE: $	835	PROTOTYPE: $
1354	CODE:	836	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	837	eio_set_max_poll_time (nseconds);
1356		838
1357	void	839	void
1358	min_parallel (int nthreads)	840	min_parallel (int nthreads)
1359	PROTOTYPE: $	841	PROTOTYPE: $
		842	CODE:
		843	eio_set_min_parallel (nthreads);
1360		844
1361	void	845	void
1362	max_parallel (int nthreads)	846	max_parallel (int nthreads)
1363	PROTOTYPE: $	847	PROTOTYPE: $
		848	CODE:
		849	eio_set_max_parallel (nthreads);
1364		850
1365	void	851	void
1366	max_idle (int nthreads)	852	max_idle (int nthreads)
1367	PROTOTYPE: $	853	PROTOTYPE: $
1368	CODE:	854	CODE:
1369	set_max_idle (nthreads);	855	eio_set_max_idle (nthreads);
1370		856
1371	int	857	void
1372	max_outstanding (int maxreqs)	858	max_outstanding (int maxreqs)
1373	PROTOTYPE: $	859	PROTOTYPE: $
1374	CODE:	860	CODE:
1375	RETVAL = max_outstanding;
1376	max_outstanding = maxreqs;	861	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		862
1380	void	863	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	864	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1382	PROTOTYPE: $$$;$
1383	PPCODE:	865	PPCODE:
1384	{	866	{
1385	dREQ;	867	dREQ;
1386		868
1387	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	872	req->int1 = flags;
1391	req->mode = mode;	873	req->int2 = mode;
1392		874
1393	REQ_SEND;	875	REQ_SEND;
1394	}	876	}
1395		877
1396	void	878	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	PROTOTYPE: $;$
1399	ALIAS:	880	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	881	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	882	aio_fdatasync = EIO_FDATASYNC
1403	PPCODE:	883	PPCODE:
1404	{	884	{
		885	int fd = s_fileno_croak (fh, 0);
1405	dREQ;	886	dREQ;
1406		887
1407	req->type = ix;	888	req->type = ix;
1408	req->sv1 = newSVsv (fh);	889	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	890	req->int1 = fd;
1410		891
1411	REQ_SEND (req);	892	REQ_SEND (req);
1412	}	893	}
1413		894
1414	void	895	void
		896	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	int fd = s_fileno_croak (fh, 0);
		900	dREQ;
		901
		902	req->type = EIO_SYNC_FILE_RANGE;
		903	req->sv1 = newSVsv (fh);
		904	req->int1 = fd;
		905	req->offs = offset;
		906	req->size = nbytes;
		907	req->int2 = flags;
		908
		909	REQ_SEND (req);
		910	}
		911
		912	void
		913	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		914	PPCODE:
		915	{
		916	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		917	int fd = s_fileno_croak (fh, 0);
		918	dREQ;
		919
		920	if (close_pipe < 0)
		921	{
		922	int pipefd [2];
		923
		924	if (pipe (pipefd) < 0
		925	|| close (pipefd [1]) < 0
		926	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		927	abort (); /*D*/
		928
		929	close_pipe = pipefd [0];
		930	}
		931
		932	req->type = EIO_DUP2;
		933	req->int1 = close_pipe;
		934	req->sv2 = newSVsv (fh);
		935	req->int2 = fd;
		936
		937	REQ_SEND (req);
		938	}
		939
		940	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	941	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1416	ALIAS:	942	ALIAS:
1417	aio_read = REQ_READ	943	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	944	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$
1420	PPCODE:	945	PPCODE:
1421	{	946	{
1422	STRLEN svlen;	947	STRLEN svlen;
		948	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	949	char *svptr = SvPVbyte (data, svlen);
1424		950	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		951
1428	if (dataoffset < 0)	952	if (dataoffset < 0)
1429	dataoffset += svlen;	953	dataoffset += svlen;
1430		954
1431	if (dataoffset < 0 || dataoffset > svlen)	955	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	956	croak ("dataoffset outside of data scalar");
1433		957
1434	if (ix == REQ_WRITE)	958	if (ix == EIO_WRITE)
1435	{	959	{
1436	/* write: check length and adjust. */	960	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	961	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	962	len = svlen - dataoffset;
1439	}	963	}
1440	else	964	else
1441	{	965	{
1442	/* read: grow scalar as necessary */	966	/* read: check type and grow scalar as necessary */
		967	SvUPGRADE (data, SVt_PV);
1443	svptr = SvGROW (data, length + dataoffset + 1);	968	svptr = SvGROW (data, len + dataoffset + 1);
1444	}	969	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		970
1449	{	971	{
1450	dREQ;	972	dREQ;
1451		973
1452	req->type = ix;	974	req->type = ix;
1453	req->sv1 = newSVsv (fh);	975	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	976	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	977	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	978	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	979	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	980	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	981	req->stroffset = dataoffset;
1461		982
1462	if (!SvREADONLY (data))	983	if (!SvREADONLY (data))
1463	{	984	{
1464	SvREADONLY_on (data);	985	SvREADONLY_on (data);
1465	req->flags |= FLAG_SV1_RO_OFF;	986	req->flags |= FLAG_SV2_RO_OFF;
1466	}	987	}
1467		988
1468	REQ_SEND;	989	REQ_SEND;
1469	}	990	}
1470	}	991	}
1471		992
1472	void	993	void
1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	994	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1474	PROTOTYPE: $$;$
1475	PPCODE:	995	PPCODE:
1476	{	996	{
1477	SV *data;	997	SV *data;
1478	dREQ;	998	dREQ;
1479		999
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	1000	req->type = EIO_READLINK;
1484	req->sv1 = newSVsv (path);	1001	req->sv1 = newSVsv (path);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);	1002	req->ptr1 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		1003
1489	REQ_SEND;	1004	REQ_SEND;
1490	}	1005	}
1491		1006
1492	void	1007	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	1008	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$
1495	PPCODE:	1009	PPCODE:
1496	{	1010	{
		1011	int ifd = s_fileno_croak (in_fh , 0);
		1012	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	1013	dREQ;
1498		1014
1499	req->type = REQ_SENDFILE;	1015	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	1016	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1017	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	1018	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1019	req->int2 = ifd;
1504	req->offs = in_offset;	1020	req->offs = in_offset;
1505	req->size = length;	1021	req->size = length;
1506		1022
1507	REQ_SEND;	1023	REQ_SEND;
1508	}	1024	}
1509		1025
1510	void	1026	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	1027	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1512	PROTOTYPE: $$$;$
1513	PPCODE:	1028	PPCODE:
1514	{	1029	{
		1030	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	1031	dREQ;
1516		1032
1517	req->type = REQ_READAHEAD;	1033	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	1034	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1035	req->int1 = fd;
1520	req->offs = offset;	1036	req->offs = offset;
1521	req->size = length;	1037	req->size = length;
1522		1038
1523	REQ_SEND;	1039	REQ_SEND;
1524	}	1040	}
1525		1041
1526	void	1042	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1043	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1528	ALIAS:	1044	ALIAS:
1529	aio_stat = REQ_STAT	1045	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1046	aio_lstat = EIO_LSTAT
		1047	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1048	PPCODE:
1532	{	1049	{
1533	dREQ;	1050	dREQ;
1534		1051
1535	req->ptr2 = malloc (sizeof (Stat_t));
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);	1052	req->sv1 = newSVsv (fh_or_path);
1544		1053
1545	if (SvPOK (fh_or_path))	1054	if (SvPOK (req->sv1))
1546	{	1055	{
1547	req->type = ix;	1056	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);	1057	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}	1058	}
1550	else	1059	else
1551	{	1060	{
1552	req->type = REQ_FSTAT;	1061	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1062	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}	1063	}
1555		1064
1556	REQ_SEND;	1065	REQ_SEND;
1557	}	1066	}
…		…
1564		1073
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1074	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1075	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1076	req->sv1 = newSVsv (fh_or_path);
1568		1077
1569	if (SvPOK (fh_or_path))	1078	if (SvPOK (req->sv1))
1570	{	1079	{
1571	req->type = REQ_UTIME;	1080	req->type = EIO_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1081	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}	1082	}
1574	else	1083	else
1575	{	1084	{
1576	req->type = REQ_FUTIME;	1085	req->type = EIO_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1086	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}	1087	}
1579		1088
1580	REQ_SEND;	1089	REQ_SEND;
1581	}	1090	}
1582		1091
1583	void	1092	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1093	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1585	PPCODE:	1094	PPCODE:
1586	{	1095	{
1587	dREQ;	1096	dREQ;
1588		1097
1589	req->mode = mode;
1590	req->sv1 = newSVsv (fh_or_path);	1098	req->sv1 = newSVsv (fh_or_path);
		1099	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1591		1100
1592	if (SvPOK (fh_or_path))	1101	if (SvPOK (req->sv1))
1593	{	1102	{
1594	req->type = REQ_CHMOD;	1103	req->type = EIO_TRUNCATE;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);	1104	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}	1105	}
1597	else	1106	else
1598	{	1107	{
1599	req->type = REQ_FCHMOD;	1108	req->type = EIO_FTRUNCATE;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1109	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}	1110	}
1602		1111
1603	REQ_SEND;	1112	REQ_SEND;
1604	}	1113	}
1605		1114
1606	void	1115	void
1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1116	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1117	ALIAS:
		1118	aio_chmod = EIO_CHMOD
		1119	aio_mkdir = EIO_MKDIR
1608	PPCODE:	1120	PPCODE:
1609	{	1121	{
1610	dREQ;	1122	dREQ;
1611		1123
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1124	req->int2 = mode;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1125	req->sv1 = newSVsv (fh_or_path);
1615		1126
1616	if (SvPOK (fh_or_path))	1127	if (SvPOK (req->sv1))
1617	{	1128	{
1618	req->type = REQ_CHOWN;	1129	req->type = ix;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);	1130	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}	1131	}
1621	else	1132	else
1622	{	1133	{
1623	req->type = REQ_FCHOWN;	1134	req->type = EIO_FCHMOD;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1135	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}	1136	}
1626		1137
1627	REQ_SEND;	1138	REQ_SEND;
1628	}	1139	}
1629		1140
1630	void	1141	void
		1142	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1143	PPCODE:
		1144	{
		1145	dREQ;
		1146
		1147	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1148	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1149	req->sv1 = newSVsv (fh_or_path);
		1150
		1151	if (SvPOK (req->sv1))
		1152	{
		1153	req->type = EIO_CHOWN;
		1154	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1155	}
		1156	else
		1157	{
		1158	req->type = EIO_FCHOWN;
		1159	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1160	}
		1161
		1162	REQ_SEND;
		1163	}
		1164
		1165	void
		1166	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1167	PPCODE:
		1168	{
		1169	dREQ;
		1170
		1171	req->type = EIO_READDIR;
		1172	req->sv1 = newSVsv (pathname);
		1173	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1174	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1175
		1176	if (flags & EIO_READDIR_DENTS)
		1177	req->int1 |= EIO_READDIR_CUSTOM2;
		1178
		1179	REQ_SEND;
		1180	}
		1181
		1182	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1183	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1632	ALIAS:	1184	ALIAS:
1633	aio_unlink = REQ_UNLINK	1185	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1186	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1187	aio_readdir = EIO_READDIR
1636	PPCODE:	1188	PPCODE:
1637	{	1189	{
1638	dREQ;	1190	dREQ;
1639		1191
1640	req->type = ix;	1192	req->type = ix;
…		…
1643		1195
1644	REQ_SEND;	1196	REQ_SEND;
1645	}	1197	}
1646		1198
1647	void	1199	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1649	PPCODE:
1650	{
1651	dREQ;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1200	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:	1201	ALIAS:
1664	aio_link = REQ_LINK	1202	aio_link = EIO_LINK
1665	aio_symlink = REQ_SYMLINK	1203	aio_symlink = EIO_SYMLINK
1666	aio_rename = REQ_RENAME	1204	aio_rename = EIO_RENAME
1667	PPCODE:	1205	PPCODE:
1668	{	1206	{
1669	dREQ;	1207	dREQ;
1670		1208
1671	req->type = ix;	1209	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);	1210	req->sv1 = newSVsv (oldpath);
		1211	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1212	req->sv2 = newSVsv (newpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);	1213	req->ptr2 = SvPVbyte_nolen (req->sv2);
1674	req->sv1 = newSVsv (newpath);
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1214
1677	REQ_SEND;	1215	REQ_SEND;
1678	}	1216	}
1679		1217
1680	void	1218	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1219	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1682	PPCODE:	1220	PPCODE:
1683	{	1221	{
1684	dREQ;	1222	dREQ;
1685		1223
1686	req->type = REQ_MKNOD;	1224	req->type = EIO_MKNOD;
1687	req->sv1 = newSVsv (pathname);	1225	req->sv1 = newSVsv (pathname);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);	1226	req->ptr1 = SvPVbyte_nolen (req->sv1);
1689	req->mode = (mode_t)mode;	1227	req->int2 = (mode_t)mode;
1690	req->offs = dev;	1228	req->offs = dev;
1691		1229
1692	REQ_SEND;	1230	REQ_SEND;
1693	}	1231	}
1694		1232
1695	void	1233	void
		1234	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1235	ALIAS:
		1236	aio_mtouch = EIO_MTOUCH
		1237	aio_msync = EIO_MSYNC
		1238	PPCODE:
		1239	{
		1240	STRLEN svlen;
		1241	char *svptr = SvPVbyte (data, svlen);
		1242	UV len = SvUV (length);
		1243
		1244	if (offset < 0)
		1245	offset += svlen;
		1246
		1247	if (offset < 0 || offset > svlen)
		1248	croak ("offset outside of scalar");
		1249
		1250	if (!SvOK (length) || len + offset > svlen)
		1251	len = svlen - offset;
		1252
		1253	{
		1254	dREQ;
		1255
		1256	req->type = ix;
		1257	req->sv2 = SvREFCNT_inc (data);
		1258	req->ptr2 = (char *)svptr + offset;
		1259	req->size = len;
		1260	req->int1 = flags;
		1261
		1262	REQ_SEND;
		1263	}
		1264	}
		1265
		1266	void
		1267	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1268	PPCODE:
		1269	{
		1270	STRLEN svlen;
		1271	char *svptr = SvPVbyte (data, svlen);
		1272	UV len = SvUV (length);
		1273
		1274	if (offset < 0)
		1275	offset += svlen;
		1276
		1277	if (offset < 0 || offset > svlen)
		1278	croak ("offset outside of scalar");
		1279
		1280	if (!SvOK (length) || len + offset > svlen)
		1281	len = svlen - offset;
		1282
		1283	{
		1284	dREQ;
		1285
		1286	req->type = EIO_MLOCK;
		1287	req->sv2 = SvREFCNT_inc (data);
		1288	req->ptr2 = (char *)svptr + offset;
		1289	req->size = len;
		1290
		1291	REQ_SEND;
		1292	}
		1293	}
		1294
		1295	void
		1296	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1297	PPCODE:
		1298	{
		1299	dREQ;
		1300
		1301	req->type = EIO_MLOCKALL;
		1302	req->int1 = flags;
		1303
		1304	REQ_SEND;
		1305	}
		1306
		1307	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1308	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:	1309	PPCODE:
1698	{	1310	{
1699	dREQ;	1311	dREQ;
1700		1312
1701	req->type = REQ_BUSY;	1313	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	1314	req->nv1 = delay < 0. ? 0. : delay;
1703		1315
1704	REQ_SEND;	1316	REQ_SEND;
1705	}	1317	}
1706		1318
1707	void	1319	void
1708	aio_group (SV *callback=&PL_sv_undef)	1320	aio_group (SV *callback=&PL_sv_undef)
1709	PROTOTYPE: ;$
1710	PPCODE:	1321	PPCODE:
1711	{	1322	{
1712	dREQ;	1323	dREQ;
1713		1324
1714	req->type = REQ_GROUP;	1325	req->type = EIO_GROUP;
1715		1326
1716	req_send (req);	1327	req_submit (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1328	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	1329	}
1719		1330
1720	void	1331	void
1721	aio_nop (SV *callback=&PL_sv_undef)	1332	aio_nop (SV *callback=&PL_sv_undef)
		1333	ALIAS:
		1334	aio_nop = EIO_NOP
		1335	aio_sync = EIO_SYNC
1722	PPCODE:	1336	PPCODE:
1723	{	1337	{
1724	dREQ;	1338	dREQ;
1725		1339
1726	req->type = REQ_NOP;	1340	req->type = ix;
1727		1341
1728	REQ_SEND;	1342	REQ_SEND;
1729	}	1343	}
1730		1344
1731	int	1345	int
1732	aioreq_pri (int pri = 0)	1346	aioreq_pri (int pri = 0)
1733	PROTOTYPE: ;$
1734	CODE:	1347	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	1348	RETVAL = next_pri;
1736	if (items > 0)	1349	if (items > 0)
1737	{	1350	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	1351	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	1352	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	1353	next_pri = pri;
1741	}	1354	}
1742	OUTPUT:	1355	OUTPUT:
1743	RETVAL	1356	RETVAL
1744		1357
1745	void	1358	void
1746	aioreq_nice (int nice = 0)	1359	aioreq_nice (int nice = 0)
1747	CODE:	1360	CODE:
1748	nice = next_pri - nice;	1361	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	1362	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	1363	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	1364	next_pri = nice;
1752		1365
1753	void	1366	void
1754	flush ()	1367	flush ()
1755	PROTOTYPE:
1756	CODE:	1368	CODE:
1757	while (nreqs)	1369	while (eio_nreqs ())
1758	{	1370	{
1759	poll_wait ();	1371	poll_wait ();
1760	poll_cb ();	1372	poll_cb ();
1761	}	1373	}
1762		1374
1763	int	1375	int
1764	poll()	1376	poll ()
1765	PROTOTYPE:
1766	CODE:	1377	CODE:
1767	poll_wait ();	1378	poll_wait ();
1768	RETVAL = poll_cb ();	1379	RETVAL = poll_cb ();
1769	OUTPUT:	1380	OUTPUT:
1770	RETVAL	1381	RETVAL
1771		1382
1772	int	1383	int
1773	poll_fileno()	1384	poll_fileno ()
1774	PROTOTYPE:
1775	CODE:	1385	CODE:
1776	RETVAL = respipe [0];	1386	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	1387	OUTPUT:
1778	RETVAL	1388	RETVAL
1779		1389
1780	int	1390	int
1781	poll_cb(...)	1391	poll_cb (...)
1782	PROTOTYPE:	1392	PROTOTYPE:
1783	CODE:	1393	CODE:
1784	RETVAL = poll_cb ();	1394	RETVAL = poll_cb ();
1785	OUTPUT:	1395	OUTPUT:
1786	RETVAL	1396	RETVAL
1787		1397
1788	void	1398	void
1789	poll_wait()	1399	poll_wait ()
1790	PROTOTYPE:
1791	CODE:	1400	CODE:
1792	poll_wait ();	1401	poll_wait ();
1793		1402
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	1403	int
1832	nreqs()	1404	nreqs ()
1833	PROTOTYPE:
1834	CODE:	1405	CODE:
1835	RETVAL = nreqs;	1406	RETVAL = eio_nreqs ();
1836	OUTPUT:	1407	OUTPUT:
1837	RETVAL	1408	RETVAL
1838		1409
1839	int	1410	int
1840	nready()	1411	nready ()
1841	PROTOTYPE:
1842	CODE:	1412	CODE:
1843	RETVAL = get_nready ();	1413	RETVAL = eio_nready ();
1844	OUTPUT:	1414	OUTPUT:
1845	RETVAL	1415	RETVAL
1846		1416
1847	int	1417	int
1848	npending()	1418	npending ()
1849	PROTOTYPE:
1850	CODE:	1419	CODE:
1851	RETVAL = get_npending ();	1420	RETVAL = eio_npending ();
1852	OUTPUT:	1421	OUTPUT:
1853	RETVAL	1422	RETVAL
1854		1423
1855	int	1424	int
1856	nthreads()	1425	nthreads ()
1857	PROTOTYPE:
1858	CODE:	1426	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1427	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1428	OUTPUT:
1863	RETVAL	1429	RETVAL
1864		1430
		1431	int
		1432	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1433	CODE:
		1434	RETVAL = posix_fadvise (fh, offset, length, advice);
		1435	OUTPUT:
		1436	RETVAL
		1437
		1438	ssize_t
		1439	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1440	CODE:
		1441	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1442	OUTPUT:
		1443	RETVAL
		1444
		1445	void
		1446	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1447	PPCODE:
		1448	sv_unmagic (scalar, MMAP_MAGIC);
		1449	{
		1450	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1451	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1452	if (addr == (void *)-1)
		1453	XSRETURN_NO;
		1454
		1455	sv_force_normal (scalar);
		1456
		1457	/* we store the length in mg_obj, as namlen is I32 :/ */
		1458	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1459	->mg_obj = (SV *)length;
		1460
		1461	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1462
		1463	if (!(prot & PROT_WRITE))
		1464	SvREADONLY_on (scalar);
		1465
		1466	if (SvLEN (scalar))
		1467	Safefree (SvPVX (scalar));
		1468
		1469	SvPVX (scalar) = (char *)addr;
		1470	SvCUR_set (scalar, length);
		1471	SvLEN_set (scalar, 0);
		1472	SvPOK_only (scalar);
		1473
		1474	XSRETURN_YES;
		1475	}
		1476
		1477	void
		1478	munmap (SV *scalar)
		1479	CODE:
		1480	sv_unmagic (scalar, MMAP_MAGIC);
		1481
		1482	int
		1483	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1484	ALIAS:
		1485	mprotect = 1
		1486	CODE:
		1487	{
		1488	STRLEN svlen;
		1489	void *addr = SvPVbyte (scalar, svlen);
		1490	size_t len = SvUV (length);
		1491
		1492	if (offset < 0)
		1493	offset += svlen;
		1494
		1495	if (offset < 0 || offset > svlen)
		1496	croak ("offset outside of scalar");
		1497
		1498	if (!SvOK (length) || len + offset > svlen)
		1499	len = svlen - offset;
		1500
		1501	addr = (void *)(((intptr_t)addr) + offset);
		1502	eio_page_align (&addr, &len);
		1503
		1504	switch (ix)
		1505	{
		1506	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1507	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1508	}
		1509	}
		1510	OUTPUT:
		1511	RETVAL
		1512
		1513	int
		1514	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1515	CODE:
		1516	{
		1517	STRLEN svlen;
		1518	void *addr = SvPVbyte (scalar, svlen);
		1519	size_t len = SvUV (length);
		1520
		1521	if (offset < 0)
		1522	offset += svlen;
		1523
		1524	if (offset < 0 || offset > svlen)
		1525	croak ("offset outside of scalar");
		1526
		1527	if (!SvOK (length) || len + offset > svlen)
		1528	len = svlen - offset;
		1529
		1530	addr = (void *)(((intptr_t)addr) + offset);
		1531	eio_page_align (&addr, &len);
		1532	#if _POSIX_MEMLOCK_RANGE
		1533	RETVAL = munlock (addr, len);
		1534	#else
		1535	RETVAL = ((errno = ENOSYS), -1);
		1536	#endif
		1537	}
		1538	OUTPUT:
		1539	RETVAL
		1540
		1541	int
		1542	munlockall ()
		1543	CODE:
		1544	#if _POSIX_MEMLOCK
		1545	munlockall ();
		1546	#else
		1547	RETVAL = -1;
		1548	errno = ENOSYS;
		1549	#endif
		1550	OUTPUT:
		1551	RETVAL
		1552
		1553	void _on_next_submit (SV *cb)
		1554	CODE:
		1555	SvREFCNT_dec (on_next_submit);
		1556	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1557
1865	PROTOTYPES: DISABLE	1558	PROTOTYPES: DISABLE
1866		1559
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1560	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		1561
1869	void	1562	void
1870	cancel (aio_req_ornot req)	1563	cancel (aio_req_ornot req)
1871	CODE:	1564	CODE:
1872	req_cancel (req);	1565	eio_cancel (req);
1873		1566
1874	void	1567	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1568	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1876	CODE:	1569	PPCODE:
		1570	{
		1571	if (GIMME_V != G_VOID)
		1572	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1573
		1574	if (items > 1)
		1575	{
		1576	SV *cb_cv =get_cb (callback);
		1577
1877	SvREFCNT_dec (req->callback);	1578	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	1579	req->callback = SvREFCNT_inc (cb_cv);
		1580	}
		1581	}
1879		1582
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1583	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		1584
1882	void	1585	void
1883	add (aio_req grp, ...)	1586	add (aio_req grp, ...)
1884	PPCODE:	1587	PPCODE:
1885	{	1588	{
1886	int i;	1589	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		1590
1892	if (grp->int1 == 2)	1591	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1592	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		1593
1895	for (i = 1; i < items; ++i )	1594	for (i = 1; i < items; ++i )
1896	{	1595	{
		1596	aio_req req;
		1597
1897	if (GIMME_V != G_VOID)	1598	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1599	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		1600
1900	req = SvAIO_REQ (ST (i));	1601	req = SvAIO_REQ (ST (i));
1901		1602
1902	if (req)	1603	if (req)
1903	{	1604	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	1605	}
1916	}	1606	}
1917		1607
1918	void	1608	void
1919	cancel_subs (aio_req_ornot req)	1609	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	1618	AV *av;
1929		1619
1930	grp->errorno = errno;	1620	grp->errorno = errno;
1931		1621
1932	av = newAV ();	1622	av = newAV ();
		1623	av_extend (av, items - 1);
1933		1624
1934	for (i = 1; i < items; ++i )	1625	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	1626	av_push (av, newSVsv (ST (i)));
1936		1627
1937	SvREFCNT_dec (grp->sv1);	1628	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	1635	grp->errorno = errorno;
1945		1636
1946	void	1637	void
1947	limit (aio_req grp, int limit)	1638	limit (aio_req grp, int limit)
1948	CODE:	1639	CODE:
1949	grp->int2 = limit;	1640	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		1641
1952	void	1642	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	1643	feed (aio_req grp, SV *callback=&PL_sv_undef)
1954	CODE:	1644	CODE:
1955	{	1645	{
1956	SvREFCNT_dec (grp->sv2);	1646	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	1647	grp->sv2 = newSVsv (callback);
		1648	grp->feed = aio_grp_feed;
1958		1649
1959	if (grp->int2 <= 0)	1650	if (grp->int2 <= 0)
1960	grp->int2 = 2;	1651	grp->int2 = 2;
1961		1652
1962	aio_grp_feed (grp);	1653	eio_grp_limit (grp, grp->int2);
1963	}	1654	}
1964		1655

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