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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.170 by root, Wed Aug 4 16:09:36 2010 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_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 */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif	75	#endif
38	#endif
39		76
40	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
41	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
42		82
43	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif
47
48	/* buffer size for various temporary buffers */
49	#define AIO_BUFSIZE 65536
50		84
51	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
53	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
54	#else	90	#else
		91	# define VAL64 NV
55	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
56	#endif	94	#endif
57		95
58	#define dBUF \	96	/*****************************************************************************/
59	char *aio_buf; \	97
60	LOCK (wrklock); \	98	#if __GNUC__ >= 3
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
62	UNLOCK (wrklock); \	100	#else
63	if (!aio_buf) \	101	# define expect(expr,value) (expr)
64	return -1;	102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
65		108
66	typedef SV SV8; /* byte-sv, used for argument-checking */	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/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		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 _XOPEN_SOURCE < 600 || NO_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	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef ST_NODEV
		171	# define ST_NODEV 0
		172	#endif
		173	#ifndef ST_NOEXEC
		174	# define ST_NOEXEC 0
		175	#endif
		176	#ifndef ST_SYNCHRONOUS
		177	# define ST_SYNCHRONOUS 0
		178	#endif
		179	#ifndef ST_MANDLOCK
		180	# define ST_MANDLOCK 0
		181	#endif
		182	#ifndef ST_WRITE
		183	# define ST_WRITE 0
		184	#endif
		185	#ifndef ST_APPEND
		186	# define ST_APPEND 0
		187	#endif
		188	#ifndef ST_IMMUTABLE
		189	# define ST_IMMUTABLE 0
		190	#endif
		191	#ifndef ST_NOATIME
		192	# define ST_NOATIME 0
		193	#endif
		194	#ifndef ST_NODIRATIME
		195	# define ST_NODIRATIME 0
		196	#endif
		197	#ifndef ST_RELATIME
		198	# define ST_RELATIME 0
		199	#endif
		200
		201	#ifndef MCL_CURRENT
		202	# define MCL_CURRENT 0
		203	#endif
		204	#ifndef MCL_FUTURE
		205	# define MCL_FUTURE 0
		206	#endif
		207
		208	#ifndef MAP_ANONYMOUS
		209	# ifdef MAP_ANON
		210	# define MAP_ANONYMOUS MAP_ANON
		211	# else
		212	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		213	# endif
		214	#endif
		215	#ifndef MAP_HUGETLB
		216	# define MAP_HUGETLB 0
		217	#endif
		218	#ifndef MAP_LOCKED
		219	# define MAP_LOCKED 0
		220	#endif
		221	#ifndef MAP_NORESERVE
		222	# define MAP_NORESERVE 0
		223	#endif
		224	#ifndef MAP_POPULATE
		225	# define MAP_POPULATE 0
		226	#endif
		227	#ifndef MAP_NONBLOCK
		228	# define MAP_NONBLOCK 0
		229	#endif
		230
		231	#ifndef PAGESIZE
		232	# define PAGESIZE sysconf (_SC_PAGESIZE)
		233	#endif
		234
		235	static int req_invoke (eio_req *req);
		236	#define EIO_FINISH(req) req_invoke (req)
		237	static void req_destroy (eio_req *grp);
		238	#define EIO_DESTROY(req) req_destroy (req)
67		239
68	enum {	240	enum {
69	REQ_QUIT,	241	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	242	};
84		243
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	244	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		245
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *callback;
93	SV *sv1, *sv2;
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99
100	STRLEN stroffset;
101	int type;
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};
118
119	typedef aio_cb *aio_req;	246	typedef eio_req *aio_req;
120	typedef aio_cb *aio_req_ornot;	247	typedef eio_req *aio_req_ornot;
121		248
122	enum {	249	static SV *on_next_submit;
123	PRI_MIN = -4,	250	static int next_pri = EIO_PRI_DEFAULT;
124	PRI_MAX = 4,	251	static int max_outstanding;
125		252
126	DEFAULT_PRI = 0,	253	static s_epipe respipe;
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130		254
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142
143	static thread_t main_tid;
144	static int main_sig;
145	static int block_sig_level;
146
147	void block_sig ()
148	{
149	sigset_t ss;
150
151	if (block_sig_level++)
152	return;
153
154	if (!main_sig)
155	return;
156
157	sigemptyset (&ss);
158	sigaddset (&ss, main_sig);
159	pthread_sigmask (SIG_BLOCK, &ss, 0);
160	}
161
162	void unblock_sig ()
163	{
164	sigset_t ss;
165
166	if (--block_sig_level)
167	return;
168
169	if (!main_sig)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{
202	closedir (wrk->dirp);
203	wrk->dirp = 0;
204	}
205
206	if (wrk->dbuf)
207	{
208	free (wrk->dbuf);
209	wrk->dbuf = 0;
210	}
211	}
212
213	static void worker_free (worker *wrk)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;
308
309	--q->size;
310
311	for (pri = NUM_PRI; pri--; )
312	{
313	aio_req req = q->qs[pri];
314
315	if (req)
316	{
317	if (!(q->qs[pri] = req->next))
318	q->qe[pri] = 0;
319
320	return req;
321	}
322	}
323
324	abort ();
325	}
326
327	static int poll_cb ();
328	static int req_invoke (aio_req req);
329	static void req_destroy (aio_req req);	255	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	256	static void req_cancel (aio_req req);
331		257
		258	static void want_poll (void)
		259	{
		260	/* write a dummy byte to the pipe so fh becomes ready */
		261	s_epipe_signal (&respipe);
		262	}
		263
		264	static void done_poll (void)
		265	{
		266	/* read any signals sent by the worker threads */
		267	s_epipe_drain (&respipe);
		268	}
		269
332	/* must be called at most once */	270	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	271	static SV *req_sv (aio_req req, HV *stash)
334	{	272	{
335	if (!req->self)	273	if (!req->self)
336	{	274	{
337	req->self = (SV *)newHV ();	275	req->self = (SV *)newHV ();
338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	276	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339	}	277	}
340		278
341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	279	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342	}	280	}
343		281
344	static aio_req SvAIO_REQ (SV *sv)	282	static aio_req SvAIO_REQ (SV *sv)
345	{	283	{
346	MAGIC *mg;	284	MAGIC *mg;
347		285
348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	286	if (!SvROK (sv)
		287	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		288	&& SvSTASH (SvRV (sv)) != aio_req_stash
		289	&& !sv_derived_from (sv, "IO::AIO::REQ")))
349	croak ("object of class " AIO_REQ_KLASS " expected");	290	croak ("object of class IO::AIO::REQ expected");
350		291
351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	292	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352		293
353	return mg ? (aio_req)mg->mg_ptr : 0;	294	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	295	}
355		296
356	static void aio_grp_feed (aio_req grp)	297	static void aio_grp_feed (aio_req grp)
357	{	298	{
358	block_sig ();	299	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	300	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	301	dSP;
367		302
368	ENTER;	303	ENTER;
369	SAVETMPS;	304	SAVETMPS;
370	PUSHMARK (SP);	305	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	306	XPUSHs (req_sv (grp, aio_grp_stash));
372	PUTBACK;	307	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	308	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	309	SPAGAIN;
375	FREETMPS;	310	FREETMPS;
376	LEAVE;	311	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	312	}
387
388	unblock_sig ();
389	}	313	}
390		314
391	static void aio_grp_dec (aio_req grp)	315	static void req_submit (eio_req *req)
392	{	316	{
393	--grp->size;	317	eio_submit (req);
394		318
395	/* call feeder, if applicable */	319	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	320	{
401	block_sig ();	321	dSP;
		322	SV *cb = sv_2mortal (on_next_submit);
402		323
403	if (!req_invoke (grp))	324	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		325
410	req_destroy (grp);	326	PUSHMARK (SP);
411	unblock_sig ();	327	PUTBACK;
		328	call_sv (cb, G_DISCARD | G_EVAL);
412	}	329	}
413	}	330	}
414		331
415	static int req_invoke (aio_req req)	332	static int req_invoke (eio_req *req)
416	{	333	{
417	dSP;
418
419	if (req->flags & FLAG_SV2_RO_OFF)	334	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	335	SvREADONLY_off (req->sv2);
421		336
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	337	if (!EIO_CANCELLED (req) && req->callback)
423	{	338	{
		339	dSP;
		340	static SV *sv_result_cache; /* caches the result integer SV */
		341	SV *sv_result;
		342
424	ENTER;	343	ENTER;
425	SAVETMPS;	344	SAVETMPS;
426	PUSHMARK (SP);	345	PUSHMARK (SP);
427	EXTEND (SP, 1);	346	EXTEND (SP, 1);
428		347
		348	/* do not recreate the result IV from scratch each time */
		349	if (expect_true (sv_result_cache))
		350	{
		351	sv_result = sv_result_cache; sv_result_cache = 0;
		352	SvIV_set (sv_result, req->result);
		353	}
		354	else
		355	{
		356	sv_result = newSViv (req->result);
		357	SvREADONLY_on (sv_result);
		358	}
		359
429	switch (req->type)	360	switch (req->type)
430	{	361	{
431	case REQ_READDIR:	362	case EIO_READDIR:
432	{	363	{
433	SV *rv = &PL_sv_undef;	364	SV *rv = &PL_sv_undef;
434		365
435	if (req->result >= 0)	366	if (req->result >= 0)
436	{	367	{
437	int i;	368	int i;
438	char *buf = req->ptr2;	369	char *names = (char *)req->ptr2;
		370	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	371	AV *av = newAV ();
440		372
441	av_extend (av, req->result - 1);	373	av_extend (av, req->result - 1);
442		374
443	for (i = 0; i < req->result; ++i)	375	for (i = 0; i < req->result; ++i)
444	{	376	{
445	SV *sv = newSVpv (buf, 0);	377	if (req->int1 & EIO_READDIR_DENTS)
		378	{
		379	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		380
		381	if (req->int1 & EIO_READDIR_CUSTOM2)
		382	{
		383	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		384	AV *avent = newAV ();
		385
		386	av_extend (avent, 2);
		387
		388	if (!sv_type [ent->type])
		389	{
		390	sv_type [ent->type] = newSViv (ent->type);
		391	SvREADONLY_on (sv_type [ent->type]);
		392	}
		393
		394	av_store (avent, 0, namesv);
		395	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		396	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		397
		398	av_store (av, i, newRV_noinc ((SV *)avent));
		399	}
		400	else
447	av_store (av, i, sv);	401	av_store (av, i, namesv);
		402
		403	++ent;
		404	}
		405	else
		406	{
		407	SV *name = newSVpv (names, 0);
		408	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	409	names += SvCUR (name) + 1;
		410	}
449	}	411	}
450		412
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	413	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	414	}
453		415
454	PUSHs (rv);	416	PUSHs (rv);
		417
		418	if (req->int1 & EIO_READDIR_CUSTOM1)
		419	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	420	}
456	break;	421	break;
457		422
458	case REQ_OPEN:	423	case EIO_OPEN:
459	{	424	{
460	/* convert fd to fh */	425	/* convert fd to fh */
461	SV *fh;	426	SV *fh = &PL_sv_undef;
462		427
463	PUSHs (sv_2mortal (newSViv (req->result)));	428	if (req->result >= 0)
464	PUTBACK;	429	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	430	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	431	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		432	char sym [64];
		433	int symlen;
		434
		435	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		436	gv_init (gv, aio_stash, sym, symlen, 0);
467		437
468	fh = POPs;	438	symlen = snprintf (
469	PUSHMARK (SP);	439	sym,
		440	sizeof (sym),
		441	"%s&=%d",
		442	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		443	(int)req->result
		444	);
		445
		446	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		447	fh = (SV *)gv;
		448	}
		449
470	XPUSHs (fh);	450	PUSHs (fh);
471	}	451	}
472	break;	452	break;
473		453
		454	case EIO_STATVFS:
		455	case EIO_FSTATVFS:
		456	{
		457	SV *rv = &PL_sv_undef;
		458
		459	if (req->result >= 0)
		460	{
		461	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		462	HV *hv = newHV ();
		463
		464	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		465
		466	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		467	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		468	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		469	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		470	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		471	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		472	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		473	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		474	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		475	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		476	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		477	}
		478
		479	PUSHs (rv);
		480	}
		481
		482	break;
		483
474	case REQ_GROUP:	484	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	485	req->int1 = 2; /* mark group as finished */
476		486
477	if (req->sv1)	487	if (req->sv1)
478	{	488	{
479	int i;	489	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	493	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	494	PUSHs (*av_fetch (av, i, 0));
485	}	495	}
486	break;	496	break;
487		497
488	case REQ_NOP:	498	case EIO_NOP:
489	case REQ_BUSY:	499	case EIO_BUSY:
490	break;	500	break;
491		501
492	case REQ_READLINK:	502	case EIO_READLINK:
493	if (req->result > 0)	503	if (req->result > 0)
494	{	504	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
495	SvCUR_set (req->sv2, req->result);
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);
498	}
499	break;	505	break;
500		506
501	case REQ_STAT:	507	case EIO_STAT:
502	case REQ_LSTAT:	508	case EIO_LSTAT:
503	case REQ_FSTAT:	509	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	510	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	511	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	512	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	513	PUSHs (sv_result);
508	break;	514	break;
509		515
510	case REQ_READ:	516	case EIO_READ:
		517	{
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	518	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	519	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));	520	SvPOK_only (req->sv2);
		521	SvSETMAGIC (req->sv2);
		522	PUSHs (sv_result);
		523	}
514	break;	524	break;
515		525
		526	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		527	if (req->result > 0)
		528	SvIV_set (sv_result, 0);
		529	/* FALLTHROUGH */
		530
516	default:	531	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	532	PUSHs (sv_result);
518	break;	533	break;
519	}	534	}
520		535
521	errno = req->errorno;	536	errno = req->errorno;
522		537
523	PUTBACK;	538	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	539	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	540	SPAGAIN;
		541
		542	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		543	SvREFCNT_dec (sv_result);
		544	else
		545	sv_result_cache = sv_result;
526		546
527	FREETMPS;	547	FREETMPS;
528	LEAVE;	548	LEAVE;
		549
		550	PUTBACK;
529	}	551	}
530		552
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	553	return !!SvTRUE (ERRSV);
546	}	554	}
547		555
548	static void req_destroy (aio_req req)	556	static void req_destroy (aio_req req)
549	{	557	{
550	if (req->self)	558	if (req->self)
…		…
555		563
556	SvREFCNT_dec (req->sv1);	564	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	565	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	566	SvREFCNT_dec (req->callback);
559		567
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	568	Safefree (req);
564	}	569	}
565		570
566	static void req_cancel_subs (aio_req grp)	571	static void req_cancel_subs (aio_req grp)
567	{	572	{
568	aio_req sub;	573	aio_req sub;
569		574
570	if (grp->type != REQ_GROUP)	575	if (grp->type != EIO_GROUP)
571	return;	576	return;
572		577
573	SvREFCNT_dec (grp->sv2);	578	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	579	grp->sv2 = 0;
575		580
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	581	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	582	}
579		583
580	static void req_cancel (aio_req req)	584	static void
		585	create_respipe (void)
581	{	586	{
582	req->flags |= FLAG_CANCELLED;	587	if (s_epipe_renew (&respipe))
583		588	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	589	}
586		590
587	static void *aio_proc (void *arg);
588
589	static void start_thread (void)
590	{
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	LOCK (wrklock);
597
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599	{
600	wrk->prev = &wrk_first;
601	wrk->next = wrk_first.next;
602	wrk_first.next->prev = wrk;
603	wrk_first.next = wrk;
604	++started;
605	}
606	else
607	free (wrk);
608
609	UNLOCK (wrklock);
610	}
611
612	static void maybe_start_thread ()
613	{
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}
623
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	591	static void poll_wait (void)
683	{	592	{
684	fd_set rfd;
685
686	while (nreqs)	593	while (eio_nreqs ())
687	{	594	{
688	int size;	595	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	596
		597	X_LOCK (reslock);
690	size = res_queue.size;	598	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	599	X_UNLOCK (reslock);
692		600
693	if (size)	601	if (size)
694	return;	602	return;
695		603
696	maybe_start_thread ();	604	etp_maybe_start_thread ();
697		605
698	FD_ZERO(&rfd);	606	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	607	}
703	}	608	}
704		609
705	static int poll_cb ()	610	static int poll_cb (void)
706	{	611	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	block_sig ();
718
719	for (;;)	612	for (;;)
720	{	613	{
721	for (;;)	614	int res = eio_poll ();
722	{
723	maybe_start_thread ();
724		615
725	LOCK (reslock);	616	if (res > 0)
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{
730	--npending;
731
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}
753	else
754	{
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);	617	croak (0);
760	}
761		618
762	count++;	619	if (!max_outstanding || max_outstanding > eio_nreqs ())
763	}	620	return res;
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}
778
779	if (nreqs <= max_outstanding)
780	break;
781		621
782	poll_wait ();	622	poll_wait ();
783
784	++maxreqs;
785	}	623	}
786
787	unblock_sig ();
788	return count;
789	}	624	}
790		625
791	static void create_pipe ()	626	static void atfork_child (void)
792	{	627	{
793	if (pipe (respipe))	628	create_respipe ();
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}	629	}
802		630
803	/*****************************************************************************/	631	/*****************************************************************************/
804	/* work around various missing functions */
805		632
806	#if !HAVE_PREADWRITE	633	#if !_POSIX_MAPPED_FILES
807	# define pread aio_pread	634	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
808	# define pwrite aio_pwrite	635	# define munmap(addr,length) (errno = ENOSYS, -1)
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{
819	ssize_t res;
820	off_t ooffset;
821
822	LOCK (preadwritelock);
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828
829	return res;
830	}
831
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;
938
939	#if HAVE_SENDFILE
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942
943	# elif __freebsd
944	/*
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952	if (res < 0 && sbytes)
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif	636	#endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981		637
982	if (res < 0	638	#define MMAP_MAGIC PERL_MAGIC_ext
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992		639
993	res = 0;	640	static int
		641	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		642	{
		643	int old_errno = errno;
		644	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		645	errno = old_errno;
994		646
995	while (count)	647	mg->mg_obj = 0; /* just in case */
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000		648
1001	if (cnt <= 0)	649	SvREADONLY_off (sv);
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006		650
1007	cnt = write (ofd, aio_buf, cnt);	651	if (SvPVX (sv) != mg->mg_ptr)
		652	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1008		653
1009	if (cnt <= 0)	654	SvCUR_set (sv, 0);
1010	{	655	SvPVX (sv) = 0;
1011	if (cnt && !res) res = -1;	656	SvOK_off (sv);
1012	break;
1013	}
1014		657
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;	658	return 0;
1022	}	659	}
1023		660
1024	/* read a full directory */	661	static MGVTBL mmap_vtbl = {
1025	static void scandir_ (aio_req req, worker *self)	662	0, 0, 0, 0, mmap_free
1026	{	663	};
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085		664
1086	/*****************************************************************************/	665	/*****************************************************************************/
1087		666
1088	static void *aio_proc (void *thr_arg)	667	static SV *
		668	get_cb (SV *cb_sv)
1089	{	669	{
1090	aio_req req;	670	SvGETMAGIC (cb_sv);
1091	struct timespec ts;	671	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)
1282	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();
1311
1312	atfork_parent ();
1313	}	672	}
1314		673
1315	#define dREQ \	674	#define dREQ \
		675	SV *cb_cv; \
1316	aio_req req; \	676	aio_req req; \
1317	int req_pri = next_pri; \	677	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	678	next_pri = EIO_PRI_DEFAULT; \
1319	\	679	\
1320	if (SvOK (callback) && !SvROK (callback)) \	680	cb_cv = get_cb (callback); \
1321	croak ("callback must be undef or of reference type"); \
1322	\	681	\
1323	Newz (0, req, 1, aio_cb); \	682	Newz (0, req, 1, eio_req); \
1324	if (!req) \	683	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	684	croak ("out of memory during eio_req allocation"); \
1326	\	685	\
1327	req->callback = newSVsv (callback); \	686	req->callback = SvREFCNT_inc (cb_cv); \
1328	req->pri = req_pri	687	req->pri = req_pri
1329		688
1330	#define REQ_SEND \	689	#define REQ_SEND \
		690	PUTBACK; \
1331	req_send (req); \	691	req_submit (req); \
		692	SPAGAIN; \
1332	\	693	\
1333	if (GIMME_V != G_VOID) \	694	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	695	XPUSHs (req_sv (req, aio_req_stash));
1335		696
1336	MODULE = IO::AIO PACKAGE = IO::AIO	697	MODULE = IO::AIO PACKAGE = IO::AIO
1337		698
1338	PROTOTYPES: ENABLE	699	PROTOTYPES: ENABLE
1339		700
1340	BOOT:	701	BOOT:
1341	{	702	{
		703	static const struct {
		704	const char *name;
		705	IV iv;
		706	} *civ, const_iv[] = {
		707	# define const_niv(name, value) { # name, (IV) value },
		708	# define const_iv(name) { # name, (IV) name },
		709	# define const_eio(name) { # name, (IV) EIO_ ## name },
		710	const_iv (EXDEV)
		711	const_iv (ENOSYS)
		712	const_iv (O_RDONLY)
		713	const_iv (O_WRONLY)
		714	const_iv (O_RDWR)
		715	const_iv (O_CREAT)
		716	const_iv (O_TRUNC)
		717	const_iv (O_EXCL)
		718	const_iv (O_APPEND)
		719	#ifndef _WIN32
		720	const_iv (S_IFIFO)
		721	#endif
		722	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		723	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		724	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		725	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		726	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		727	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		728
		729	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		730	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		731	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		732	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		733	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		734
		735	const_iv (ST_RDONLY)
		736	const_iv (ST_NOSUID)
		737	const_iv (ST_NODEV)
		738	const_iv (ST_NOEXEC)
		739	const_iv (ST_SYNCHRONOUS)
		740	const_iv (ST_MANDLOCK)
		741	const_iv (ST_WRITE)
		742	const_iv (ST_APPEND)
		743	const_iv (ST_IMMUTABLE)
		744	const_iv (ST_NOATIME)
		745	const_iv (ST_NODIRATIME)
		746	const_iv (ST_RELATIME)
		747
		748	const_iv (PROT_EXEC)
		749	const_iv (PROT_NONE)
		750	const_iv (PROT_READ)
		751	const_iv (PROT_WRITE)
		752
		753	/*const_iv (MAP_FIXED)*/
		754	const_iv (MAP_PRIVATE)
		755	const_iv (MAP_SHARED)
		756	const_iv (MAP_ANONYMOUS)
		757
		758	/* linuxish */
		759	const_iv (MAP_HUGETLB)
		760	const_iv (MAP_LOCKED)
		761	const_iv (MAP_NORESERVE)
		762	const_iv (MAP_POPULATE)
		763	const_iv (MAP_NONBLOCK)
		764
		765	const_iv (MCL_FUTURE)
		766	const_iv (MCL_CURRENT)
		767
		768	const_eio (MS_ASYNC)
		769	const_eio (MS_INVALIDATE)
		770	const_eio (MS_SYNC)
		771
		772	const_eio (MT_MODIFY)
		773
		774	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		775	const_eio (SYNC_FILE_RANGE_WRITE)
		776	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		777
		778	const_eio (READDIR_DENTS)
		779	const_eio (READDIR_DIRS_FIRST)
		780	const_eio (READDIR_STAT_ORDER)
		781	const_eio (READDIR_FOUND_UNKNOWN)
		782
		783	const_eio (DT_UNKNOWN)
		784	const_eio (DT_FIFO)
		785	const_eio (DT_CHR)
		786	const_eio (DT_DIR)
		787	const_eio (DT_BLK)
		788	const_eio (DT_REG)
		789	const_eio (DT_LNK)
		790	const_eio (DT_SOCK)
		791	const_eio (DT_WHT)
		792	};
		793
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	794	aio_stash = gv_stashpv ("IO::AIO" , 1);
		795	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		796	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1343		797
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	798	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	799	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351		800
		801	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		802
1352	create_pipe ();	803	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	804
		805	if (eio_init (want_poll, done_poll) < 0)
		806	croak ("IO::AIO: unable to initialise eio library");
		807
		808	/* atfork child called in fifo order, so before eio's handler */
		809	X_THREAD_ATFORK (0, 0, atfork_child);
1354	}	810	}
1355		811
1356	void	812	void
1357	max_poll_reqs (int nreqs)	813	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	814	PROTOTYPE: $
1359	CODE:	815	CODE:
1360	max_poll_reqs = nreqs;	816	eio_set_max_poll_reqs (nreqs);
1361		817
1362	void	818	void
1363	max_poll_time (double nseconds)	819	max_poll_time (double nseconds)
1364	PROTOTYPE: $	820	PROTOTYPE: $
1365	CODE:	821	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	822	eio_set_max_poll_time (nseconds);
1367		823
1368	void	824	void
1369	min_parallel (int nthreads)	825	min_parallel (int nthreads)
1370	PROTOTYPE: $	826	PROTOTYPE: $
		827	CODE:
		828	eio_set_min_parallel (nthreads);
1371		829
1372	void	830	void
1373	max_parallel (int nthreads)	831	max_parallel (int nthreads)
1374	PROTOTYPE: $	832	PROTOTYPE: $
		833	CODE:
		834	eio_set_max_parallel (nthreads);
1375		835
1376	void	836	void
1377	max_idle (int nthreads)	837	max_idle (int nthreads)
1378	PROTOTYPE: $	838	PROTOTYPE: $
1379	CODE:	839	CODE:
1380	set_max_idle (nthreads);	840	eio_set_max_idle (nthreads);
1381		841
1382	int	842	void
1383	max_outstanding (int maxreqs)	843	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	844	PROTOTYPE: $
1385	CODE:	845	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	846	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		847
1391	void	848	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	849	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	850	PROTOTYPE: $$$;$
1394	PPCODE:	851	PPCODE:
1395	{	852	{
1396	dREQ;	853	dREQ;
1397		854
1398	req->type = REQ_OPEN;	855	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	856	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	857	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	858	req->int1 = flags;
1402	req->mode = mode;	859	req->int2 = mode;
1403		860
1404	REQ_SEND;	861	REQ_SEND;
		862	}
		863
		864	void
		865	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		866	PROTOTYPE: $;$
		867	ALIAS:
		868	aio_fsync = EIO_FSYNC
		869	aio_fdatasync = EIO_FDATASYNC
		870	PPCODE:
		871	{
		872	int fd = s_fileno_croak (fh, 0);
		873	dREQ;
		874
		875	req->type = ix;
		876	req->sv1 = newSVsv (fh);
		877	req->int1 = fd;
		878
		879	REQ_SEND (req);
		880	}
		881
		882	void
		883	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		884	PROTOTYPE: $$$$;$
		885	PPCODE:
		886	{
		887	int fd = s_fileno_croak (fh, 0);
		888	dREQ;
		889
		890	req->type = EIO_SYNC_FILE_RANGE;
		891	req->sv1 = newSVsv (fh);
		892	req->int1 = fd;
		893	req->offs = offset;
		894	req->size = nbytes;
		895	req->int2 = flags;
		896
		897	REQ_SEND (req);
1405	}	898	}
1406		899
1407	void	900	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	901	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	902	PROTOTYPE: $;$
1410	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC
1414	PPCODE:	903	PPCODE:
1415	{	904	{
		905	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		906	int fd = s_fileno_croak (fh, 0);
1416	dREQ;	907	dREQ;
1417		908
		909	if (close_pipe < 0)
		910	{
		911	int pipefd [2];
		912
		913	if (pipe (pipefd) < 0
		914	|| close (pipefd [1]) < 0
		915	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		916	abort (); /*D*/
		917
		918	close_pipe = pipefd [0];
		919	}
		920
1418	req->type = ix;	921	req->type = EIO_DUP2;
		922	req->int1 = close_pipe;
1419	req->sv1 = newSVsv (fh);	923	req->sv2 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	924	req->int2 = fd;
1421		925
1422	REQ_SEND (req);	926	REQ_SEND (req);
1423	}	927	}
1424		928
1425	void	929	void
1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	930	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:	931	ALIAS:
1428	aio_read = REQ_READ	932	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	933	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	934	PROTOTYPE: $$$$$;$
1431	PPCODE:	935	PPCODE:
1432	{	936	{
1433	STRLEN svlen;	937	STRLEN svlen;
		938	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	939	char *svptr = SvPVbyte (data, svlen);
1435	UV len = SvUV (length);	940	UV len = SvUV (length);
1436		941
1437	SvUPGRADE (data, SVt_PV);
1438	SvPOK_on (data);
1439
1440	if (dataoffset < 0)	942	if (dataoffset < 0)
1441	dataoffset += svlen;	943	dataoffset += svlen;
1442		944
1443	if (dataoffset < 0 || dataoffset > svlen)	945	if (dataoffset < 0 || dataoffset > svlen)
1444	croak ("dataoffset outside of data scalar");	946	croak ("dataoffset outside of data scalar");
1445		947
1446	if (ix == REQ_WRITE)	948	if (ix == EIO_WRITE)
1447	{	949	{
1448	/* write: check length and adjust. */	950	/* write: check length and adjust. */
1449	if (!SvOK (length) || len + dataoffset > svlen)	951	if (!SvOK (length) || len + dataoffset > svlen)
1450	len = svlen - dataoffset;	952	len = svlen - dataoffset;
1451	}	953	}
1452	else	954	else
1453	{	955	{
1454	/* read: grow scalar as necessary */	956	/* read: check type and grow scalar as necessary */
		957	SvUPGRADE (data, SVt_PV);
1455	svptr = SvGROW (data, len + dataoffset + 1);	958	svptr = SvGROW (data, len + dataoffset + 1);
1456	}	959	}
1457		960
1458	if (len < 0)
1459	croak ("length must not be negative");
1460
1461	{	961	{
1462	dREQ;	962	dREQ;
1463		963
1464	req->type = ix;	964	req->type = ix;
1465	req->sv1 = newSVsv (fh);	965	req->sv1 = newSVsv (fh);
1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	966	req->int1 = fd;
1467	: IoOFP (sv_2io (fh)));
1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	967	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469	req->size = len;	968	req->size = len;
1470	req->sv2 = SvREFCNT_inc (data);	969	req->sv2 = SvREFCNT_inc (data);
1471	req->ptr1 = (char *)svptr + dataoffset;	970	req->ptr2 = (char *)svptr + dataoffset;
1472	req->stroffset = dataoffset;	971	req->stroffset = dataoffset;
1473		972
1474	if (!SvREADONLY (data))	973	if (!SvREADONLY (data))
1475	{	974	{
1476	SvREADONLY_on (data);	975	SvREADONLY_on (data);
…		…
1487	PPCODE:	986	PPCODE:
1488	{	987	{
1489	SV *data;	988	SV *data;
1490	dREQ;	989	dREQ;
1491		990
1492	data = newSV (NAME_MAX);
1493	SvPOK_on (data);
1494
1495	req->type = REQ_READLINK;	991	req->type = EIO_READLINK;
1496	req->sv1 = newSVsv (path);	992	req->sv1 = newSVsv (path);
1497	req->ptr2 = SvPVbyte_nolen (req->sv1);	993	req->ptr1 = SvPVbyte_nolen (req->sv1);
1498	req->sv2 = data;
1499	req->ptr1 = SvPVbyte_nolen (data);
1500		994
1501	REQ_SEND;	995	REQ_SEND;
1502	}	996	}
1503		997
1504	void	998	void
1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	999	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$$;$	1000	PROTOTYPE: $$$$;$
1507	PPCODE:	1001	PPCODE:
1508	{	1002	{
		1003	int ifd = s_fileno_croak (in_fh , 0);
		1004	int ofd = s_fileno_croak (out_fh, 1);
1509	dREQ;	1005	dREQ;
1510		1006
1511	req->type = REQ_SENDFILE;	1007	req->type = EIO_SENDFILE;
1512	req->sv1 = newSVsv (out_fh);	1008	req->sv1 = newSVsv (out_fh);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1009	req->int1 = ofd;
1514	req->sv2 = newSVsv (in_fh);	1010	req->sv2 = newSVsv (in_fh);
1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1011	req->int2 = ifd;
1516	req->offs = SvVAL64 (in_offset);	1012	req->offs = in_offset;
1517	req->size = length;	1013	req->size = length;
1518		1014
1519	REQ_SEND;	1015	REQ_SEND;
1520	}	1016	}
1521		1017
1522	void	1018	void
1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1019	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $$$;$	1020	PROTOTYPE: $$$;$
1525	PPCODE:	1021	PPCODE:
1526	{	1022	{
		1023	int fd = s_fileno_croak (fh, 0);
1527	dREQ;	1024	dREQ;
1528		1025
1529	req->type = REQ_READAHEAD;	1026	req->type = EIO_READAHEAD;
1530	req->sv1 = newSVsv (fh);	1027	req->sv1 = newSVsv (fh);
1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1028	req->int1 = fd;
1532	req->offs = SvVAL64 (offset);	1029	req->offs = offset;
1533	req->size = length;	1030	req->size = length;
1534		1031
1535	REQ_SEND;	1032	REQ_SEND;
1536	}	1033	}
1537		1034
1538	void	1035	void
1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1036	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540	ALIAS:	1037	ALIAS:
1541	aio_stat = REQ_STAT	1038	aio_stat = EIO_STAT
1542	aio_lstat = REQ_LSTAT	1039	aio_lstat = EIO_LSTAT
		1040	aio_statvfs = EIO_STATVFS
1543	PPCODE:	1041	PPCODE:
1544	{	1042	{
1545	dREQ;	1043	dREQ;
1546		1044
1547	req->ptr2 = malloc (sizeof (Stat_t));
1548	if (!req->ptr2)
1549	{
1550	req_destroy (req);
1551	croak ("out of memory during aio_stat statdata allocation");
1552	}
1553
1554	req->flags |= FLAG_PTR2_FREE;
1555	req->sv1 = newSVsv (fh_or_path);	1045	req->sv1 = newSVsv (fh_or_path);
1556		1046
1557	if (SvPOK (fh_or_path))	1047	if (SvPOK (req->sv1))
1558	{	1048	{
1559	req->type = ix;	1049	req->type = ix;
1560	req->ptr1 = SvPVbyte_nolen (req->sv1);	1050	req->ptr1 = SvPVbyte_nolen (req->sv1);
1561	}	1051	}
1562	else	1052	else
1563	{	1053	{
1564	req->type = REQ_FSTAT;	1054	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1055	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1566	}	1056	}
1567		1057
1568	REQ_SEND;	1058	REQ_SEND;
1569	}	1059	}
…		…
1576		1066
1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1067	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1068	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579	req->sv1 = newSVsv (fh_or_path);	1069	req->sv1 = newSVsv (fh_or_path);
1580		1070
1581	if (SvPOK (fh_or_path))	1071	if (SvPOK (req->sv1))
1582	{	1072	{
1583	req->type = REQ_UTIME;	1073	req->type = EIO_UTIME;
1584	req->ptr1 = SvPVbyte_nolen (req->sv1);	1074	req->ptr1 = SvPVbyte_nolen (req->sv1);
1585	}	1075	}
1586	else	1076	else
1587	{	1077	{
1588	req->type = REQ_FUTIME;	1078	req->type = EIO_FUTIME;
1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1079	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590	}	1080	}
1591		1081
1592	REQ_SEND;	1082	REQ_SEND;
1593	}	1083	}
1594		1084
1595	void	1085	void
1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1086	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1597	PPCODE:	1087	PPCODE:
1598	{	1088	{
1599	dREQ;	1089	dREQ;
1600		1090
1601	req->mode = mode;
1602	req->sv1 = newSVsv (fh_or_path);	1091	req->sv1 = newSVsv (fh_or_path);
		1092	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1603		1093
1604	if (SvPOK (fh_or_path))	1094	if (SvPOK (req->sv1))
1605	{	1095	{
1606	req->type = REQ_CHMOD;	1096	req->type = EIO_TRUNCATE;
1607	req->ptr1 = SvPVbyte_nolen (req->sv1);	1097	req->ptr1 = SvPVbyte_nolen (req->sv1);
1608	}	1098	}
1609	else	1099	else
1610	{	1100	{
1611	req->type = REQ_FCHMOD;	1101	req->type = EIO_FTRUNCATE;
1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1102	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613	}	1103	}
1614		1104
1615	REQ_SEND;	1105	REQ_SEND;
1616	}	1106	}
1617		1107
1618	void	1108	void
1619	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1109	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1110	ALIAS:
		1111	aio_chmod = EIO_CHMOD
		1112	aio_mkdir = EIO_MKDIR
1620	PPCODE:	1113	PPCODE:
1621	{	1114	{
1622	dREQ;	1115	dREQ;
1623		1116
1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1117	req->int2 = mode;
1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626	req->sv1 = newSVsv (fh_or_path);	1118	req->sv1 = newSVsv (fh_or_path);
1627		1119
1628	if (SvPOK (fh_or_path))	1120	if (SvPOK (req->sv1))
1629	{	1121	{
1630	req->type = REQ_CHOWN;	1122	req->type = ix;
1631	req->ptr1 = SvPVbyte_nolen (req->sv1);	1123	req->ptr1 = SvPVbyte_nolen (req->sv1);
1632	}	1124	}
1633	else	1125	else
1634	{	1126	{
1635	req->type = REQ_FCHOWN;	1127	req->type = EIO_FCHMOD;
1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1128	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637	}	1129	}
1638		1130
1639	REQ_SEND;	1131	REQ_SEND;
1640	}	1132	}
1641		1133
1642	void	1134	void
		1135	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1136	PPCODE:
		1137	{
		1138	dREQ;
		1139
		1140	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1141	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1142	req->sv1 = newSVsv (fh_or_path);
		1143
		1144	if (SvPOK (req->sv1))
		1145	{
		1146	req->type = EIO_CHOWN;
		1147	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1148	}
		1149	else
		1150	{
		1151	req->type = EIO_FCHOWN;
		1152	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1153	}
		1154
		1155	REQ_SEND;
		1156	}
		1157
		1158	void
		1159	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	dREQ;
		1163
		1164	req->type = EIO_READDIR;
		1165	req->sv1 = newSVsv (pathname);
		1166	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1167	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1168
		1169	if (flags & EIO_READDIR_DENTS)
		1170	req->int1 |= EIO_READDIR_CUSTOM2;
		1171
		1172	REQ_SEND;
		1173	}
		1174
		1175	void
1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1176	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1644	ALIAS:	1177	ALIAS:
1645	aio_unlink = REQ_UNLINK	1178	aio_unlink = EIO_UNLINK
1646	aio_rmdir = REQ_RMDIR	1179	aio_rmdir = EIO_RMDIR
1647	aio_readdir = REQ_READDIR	1180	aio_readdir = EIO_READDIR
1648	PPCODE:	1181	PPCODE:
1649	{	1182	{
1650	dREQ;	1183	dREQ;
1651		1184
1652	req->type = ix;	1185	req->type = ix;
…		…
1655		1188
1656	REQ_SEND;	1189	REQ_SEND;
1657	}	1190	}
1658		1191
1659	void	1192	void
1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1661	PPCODE:
1662	{
1663	dREQ;
1664
1665	req->type = REQ_MKDIR;
1666	req->sv1 = newSVsv (pathname);
1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
1668	req->mode = mode;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1193	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675	ALIAS:	1194	ALIAS:
1676	aio_link = REQ_LINK	1195	aio_link = EIO_LINK
1677	aio_symlink = REQ_SYMLINK	1196	aio_symlink = EIO_SYMLINK
1678	aio_rename = REQ_RENAME	1197	aio_rename = EIO_RENAME
1679	PPCODE:	1198	PPCODE:
1680	{	1199	{
1681	dREQ;	1200	dREQ;
1682		1201
1683	req->type = ix;	1202	req->type = ix;
1684	req->sv2 = newSVsv (oldpath);	1203	req->sv1 = newSVsv (oldpath);
		1204	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1205	req->sv2 = newSVsv (newpath);
1685	req->ptr2 = SvPVbyte_nolen (req->sv2);	1206	req->ptr2 = SvPVbyte_nolen (req->sv2);
1686	req->sv1 = newSVsv (newpath);
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688		1207
1689	REQ_SEND;	1208	REQ_SEND;
1690	}	1209	}
1691		1210
1692	void	1211	void
1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1212	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1694	PPCODE:	1213	PPCODE:
1695	{	1214	{
1696	dREQ;	1215	dREQ;
1697		1216
1698	req->type = REQ_MKNOD;	1217	req->type = EIO_MKNOD;
1699	req->sv1 = newSVsv (pathname);	1218	req->sv1 = newSVsv (pathname);
1700	req->ptr1 = SvPVbyte_nolen (req->sv1);	1219	req->ptr1 = SvPVbyte_nolen (req->sv1);
1701	req->mode = (mode_t)mode;	1220	req->int2 = (mode_t)mode;
1702	req->offs = dev;	1221	req->offs = dev;
1703		1222
1704	REQ_SEND;	1223	REQ_SEND;
1705	}	1224	}
1706		1225
1707	void	1226	void
		1227	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1228	ALIAS:
		1229	aio_mtouch = EIO_MTOUCH
		1230	aio_msync = EIO_MSYNC
		1231	PROTOTYPE: $$$$;$
		1232	PPCODE:
		1233	{
		1234	STRLEN svlen;
		1235	UV len = SvUV (length);
		1236	char *svptr = SvPVbyte (data, svlen);
		1237
		1238	if (offset < 0)
		1239	offset += svlen;
		1240
		1241	if (offset < 0 || offset > svlen)
		1242	croak ("offset outside of scalar");
		1243
		1244	if (!SvOK (length) || len + offset > svlen)
		1245	len = svlen - offset;
		1246
		1247	{
		1248	dREQ;
		1249
		1250	req->type = ix;
		1251	req->size = len;
		1252	req->sv2 = SvREFCNT_inc (data);
		1253	req->ptr2 = (char *)svptr + offset;
		1254	req->int1 = flags;
		1255
		1256	REQ_SEND;
		1257	}
		1258	}
		1259
		1260	void
1708	aio_busy (double delay, SV *callback=&PL_sv_undef)	1261	aio_busy (double delay, SV *callback=&PL_sv_undef)
1709	PPCODE:	1262	PPCODE:
1710	{	1263	{
1711	dREQ;	1264	dREQ;
1712		1265
1713	req->type = REQ_BUSY;	1266	req->type = EIO_BUSY;
1714	req->nv1 = delay < 0. ? 0. : delay;	1267	req->nv1 = delay < 0. ? 0. : delay;
1715		1268
1716	REQ_SEND;	1269	REQ_SEND;
1717	}	1270	}
1718		1271
…		…
1721	PROTOTYPE: ;$	1274	PROTOTYPE: ;$
1722	PPCODE:	1275	PPCODE:
1723	{	1276	{
1724	dREQ;	1277	dREQ;
1725		1278
1726	req->type = REQ_GROUP;	1279	req->type = EIO_GROUP;
1727		1280
1728	req_send (req);	1281	req_submit (req);
1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1282	XPUSHs (req_sv (req, aio_grp_stash));
1730	}	1283	}
1731		1284
1732	void	1285	void
1733	aio_nop (SV *callback=&PL_sv_undef)	1286	aio_nop (SV *callback=&PL_sv_undef)
		1287	ALIAS:
		1288	aio_nop = EIO_NOP
		1289	aio_sync = EIO_SYNC
1734	PPCODE:	1290	PPCODE:
1735	{	1291	{
1736	dREQ;	1292	dREQ;
1737		1293
1738	req->type = REQ_NOP;	1294	req->type = ix;
1739		1295
1740	REQ_SEND;	1296	REQ_SEND;
1741	}	1297	}
1742		1298
1743	int	1299	int
1744	aioreq_pri (int pri = 0)	1300	aioreq_pri (int pri = 0)
1745	PROTOTYPE: ;$	1301	PROTOTYPE: ;$
1746	CODE:	1302	CODE:
1747	RETVAL = next_pri - PRI_BIAS;	1303	RETVAL = next_pri;
1748	if (items > 0)	1304	if (items > 0)
1749	{	1305	{
1750	if (pri < PRI_MIN) pri = PRI_MIN;	1306	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751	if (pri > PRI_MAX) pri = PRI_MAX;	1307	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752	next_pri = pri + PRI_BIAS;	1308	next_pri = pri;
1753	}	1309	}
1754	OUTPUT:	1310	OUTPUT:
1755	RETVAL	1311	RETVAL
1756		1312
1757	void	1313	void
1758	aioreq_nice (int nice = 0)	1314	aioreq_nice (int nice = 0)
1759	CODE:	1315	CODE:
1760	nice = next_pri - nice;	1316	nice = next_pri - nice;
1761	if (nice < PRI_MIN) nice = PRI_MIN;	1317	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762	if (nice > PRI_MAX) nice = PRI_MAX;	1318	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763	next_pri = nice + PRI_BIAS;	1319	next_pri = nice;
1764		1320
1765	void	1321	void
1766	flush ()	1322	flush ()
1767	PROTOTYPE:	1323	PROTOTYPE:
1768	CODE:	1324	CODE:
1769	while (nreqs)	1325	while (eio_nreqs ())
1770	{	1326	{
1771	poll_wait ();	1327	poll_wait ();
1772	poll_cb ();	1328	poll_cb ();
1773	}	1329	}
1774		1330
…		…
1783		1339
1784	int	1340	int
1785	poll_fileno()	1341	poll_fileno()
1786	PROTOTYPE:	1342	PROTOTYPE:
1787	CODE:	1343	CODE:
1788	RETVAL = respipe [0];	1344	RETVAL = s_epipe_fd (&respipe);
1789	OUTPUT:	1345	OUTPUT:
1790	RETVAL	1346	RETVAL
1791		1347
1792	int	1348	int
1793	poll_cb(...)	1349	poll_cb(...)
…		…
1801	poll_wait()	1357	poll_wait()
1802	PROTOTYPE:	1358	PROTOTYPE:
1803	CODE:	1359	CODE:
1804	poll_wait ();	1360	poll_wait ();
1805		1361
1806	void
1807	setsig (int signum = SIGIO)
1808	PROTOTYPE: ;$
1809	CODE:
1810	{
1811	if (block_sig_level)
1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814	LOCK (reslock);
1815	main_tid = pthread_self ();
1816	main_sig = signum;
1817	UNLOCK (reslock);
1818
1819	if (main_sig && npending)
1820	pthread_kill (main_tid, main_sig);
1821	}
1822
1823	void
1824	aio_block (SV *cb)
1825	PROTOTYPE: &
1826	PPCODE:
1827	{
1828	int count;
1829
1830	block_sig ();
1831	PUSHMARK (SP);
1832	PUTBACK;
1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834	SPAGAIN;
1835	unblock_sig ();
1836
1837	if (SvTRUE (ERRSV))
1838	croak (0);
1839
1840	XSRETURN (count);
1841	}
1842
1843	int	1362	int
1844	nreqs()	1363	nreqs()
1845	PROTOTYPE:	1364	PROTOTYPE:
1846	CODE:	1365	CODE:
1847	RETVAL = nreqs;	1366	RETVAL = eio_nreqs ();
1848	OUTPUT:	1367	OUTPUT:
1849	RETVAL	1368	RETVAL
1850		1369
1851	int	1370	int
1852	nready()	1371	nready()
1853	PROTOTYPE:	1372	PROTOTYPE:
1854	CODE:	1373	CODE:
1855	RETVAL = get_nready ();	1374	RETVAL = eio_nready ();
1856	OUTPUT:	1375	OUTPUT:
1857	RETVAL	1376	RETVAL
1858		1377
1859	int	1378	int
1860	npending()	1379	npending()
1861	PROTOTYPE:	1380	PROTOTYPE:
1862	CODE:	1381	CODE:
1863	RETVAL = get_npending ();	1382	RETVAL = eio_npending ();
1864	OUTPUT:	1383	OUTPUT:
1865	RETVAL	1384	RETVAL
1866		1385
1867	int	1386	int
1868	nthreads()	1387	nthreads()
1869	PROTOTYPE:	1388	PROTOTYPE:
1870	CODE:	1389	CODE:
1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1390	RETVAL = eio_nthreads ();
1872	RETVAL = started;
1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874	OUTPUT:	1391	OUTPUT:
1875	RETVAL	1392	RETVAL
1876		1393
		1394	int
		1395	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1396	PROTOTYPE: $$$$
		1397	CODE:
		1398	RETVAL = posix_fadvise (fh, offset, length, advice);
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	ssize_t
		1403	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1404	PROTOTYPE: $$$$
		1405	CODE:
		1406	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1407	OUTPUT:
		1408	RETVAL
		1409
		1410	void
		1411	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1412	PROTOTYPE: $$$$$;$
		1413	PPCODE:
		1414	sv_unmagic (scalar, MMAP_MAGIC);
		1415	{
		1416	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1417	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1418	if (addr == (void *)-1)
		1419	XSRETURN_NO;
		1420
		1421	sv_force_normal (scalar);
		1422
		1423	/* we store the length in mg_obj, as namlen is I32 :/ */
		1424	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1425	->mg_obj = (SV *)length;
		1426
		1427	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1428
		1429	if (!(prot & PROT_WRITE))
		1430	SvREADONLY_on (scalar);
		1431
		1432	if (SvLEN (scalar))
		1433	Safefree (SvPVX (scalar));
		1434
		1435	SvPVX (scalar) = (char *)addr;
		1436	SvCUR_set (scalar, length);
		1437	SvLEN_set (scalar, 0);
		1438	SvPOK_only (scalar);
		1439
		1440	XSRETURN_YES;
		1441	}
		1442
		1443	void
		1444	munmap (SV *scalar)
		1445	PROTOTYPE: $
		1446	CODE:
		1447	sv_unmagic (scalar, MMAP_MAGIC);
		1448
		1449	int
		1450	madvise (SV *scalar, off_t offset, off_t length, IV advice)
		1451	PROTOTYPE: $$$$
		1452	CODE:
		1453	{
		1454	char *addr = SvPV_nolen (scalar) + offset;
		1455
		1456	if (!SvOK (ST (2)))
		1457	length = SvCUR (scalar) - offset;
		1458
		1459	if (addr >= SvEND (scalar) || length <= 0)
		1460	XSRETURN_EMPTY;
		1461
		1462	RETVAL = posix_madvise (addr, length, advice);
		1463	}
		1464	OUTPUT:
		1465	RETVAL
		1466
		1467	int
		1468	mlockall (int flags)
		1469	PROTOTYPE: $
		1470	CODE:
		1471	#if _POSIX_MEMLOCK
		1472	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1473	extern int mallopt (int, int);
		1474	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1475	#endif
		1476	mlockall (flags);
		1477	#else
		1478	RETVAL = -1;
		1479	errno = ENOSYS;
		1480	#endif
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	int
		1485	munlockall ()
		1486	PROTOTYPE:
		1487	CODE:
		1488	#if _POSIX_MEMLOCK
		1489	munlockall ();
		1490	#else
		1491	RETVAL = -1;
		1492	errno = ENOSYS;
		1493	#endif
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void _on_next_submit (SV *cb)
		1498	CODE:
		1499	SvREFCNT_dec (on_next_submit);
		1500	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1501
1877	PROTOTYPES: DISABLE	1502	PROTOTYPES: DISABLE
1878		1503
1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1504	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880		1505
1881	void	1506	void
1882	cancel (aio_req_ornot req)	1507	cancel (aio_req_ornot req)
1883	CODE:	1508	CODE:
1884	req_cancel (req);	1509	eio_cancel (req);
1885		1510
1886	void	1511	void
1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1512	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1888	CODE:	1513	PPCODE:
		1514	{
		1515	if (GIMME_V != G_VOID)
		1516	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1517
		1518	if (items > 1)
		1519	{
		1520	SV *cb_cv =get_cb (callback);
		1521
1889	SvREFCNT_dec (req->callback);	1522	SvREFCNT_dec (req->callback);
1890	req->callback = newSVsv (callback);	1523	req->callback = SvREFCNT_inc (cb_cv);
		1524	}
		1525	}
1891		1526
1892	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893		1528
1894	void	1529	void
1895	add (aio_req grp, ...)	1530	add (aio_req grp, ...)
1896	PPCODE:	1531	PPCODE:
1897	{	1532	{
1898	int i;	1533	int i;
1899	aio_req req;
1900
1901	if (main_sig && !block_sig_level)
1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903		1534
1904	if (grp->int1 == 2)	1535	if (grp->int1 == 2)
1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1536	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906		1537
1907	for (i = 1; i < items; ++i )	1538	for (i = 1; i < items; ++i )
1908	{	1539	{
		1540	aio_req req;
		1541
1909	if (GIMME_V != G_VOID)	1542	if (GIMME_V != G_VOID)
1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1543	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911		1544
1912	req = SvAIO_REQ (ST (i));	1545	req = SvAIO_REQ (ST (i));
1913		1546
1914	if (req)	1547	if (req)
1915	{	1548	eio_grp_add (grp, req);
1916	++grp->size;
1917	req->grp = grp;
1918
1919	req->grp_prev = 0;
1920	req->grp_next = grp->grp_first;
1921
1922	if (grp->grp_first)
1923	grp->grp_first->grp_prev = req;
1924
1925	grp->grp_first = req;
1926	}
1927	}	1549	}
1928	}	1550	}
1929		1551
1930	void	1552	void
1931	cancel_subs (aio_req_ornot req)	1553	cancel_subs (aio_req_ornot req)
…		…
1940	AV *av;	1562	AV *av;
1941		1563
1942	grp->errorno = errno;	1564	grp->errorno = errno;
1943		1565
1944	av = newAV ();	1566	av = newAV ();
		1567	av_extend (av, items - 1);
1945		1568
1946	for (i = 1; i < items; ++i )	1569	for (i = 1; i < items; ++i )
1947	av_push (av, newSVsv (ST (i)));	1570	av_push (av, newSVsv (ST (i)));
1948		1571
1949	SvREFCNT_dec (grp->sv1);	1572	SvREFCNT_dec (grp->sv1);
…		…
1956	grp->errorno = errorno;	1579	grp->errorno = errorno;
1957		1580
1958	void	1581	void
1959	limit (aio_req grp, int limit)	1582	limit (aio_req grp, int limit)
1960	CODE:	1583	CODE:
1961	grp->int2 = limit;	1584	eio_grp_limit (grp, limit);
1962	aio_grp_feed (grp);
1963		1585
1964	void	1586	void
1965	feed (aio_req grp, SV *callback=&PL_sv_undef)	1587	feed (aio_req grp, SV *callback=&PL_sv_undef)
1966	CODE:	1588	CODE:
1967	{	1589	{
1968	SvREFCNT_dec (grp->sv2);	1590	SvREFCNT_dec (grp->sv2);
1969	grp->sv2 = newSVsv (callback);	1591	grp->sv2 = newSVsv (callback);
		1592	grp->feed = aio_grp_feed;
1970		1593
1971	if (grp->int2 <= 0)	1594	if (grp->int2 <= 0)
1972	grp->int2 = 2;	1595	grp->int2 = 2;
1973		1596
1974	aio_grp_feed (grp);	1597	eio_grp_limit (grp, grp->int2);
1975	}	1598	}
1976		1599

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