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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.177 by root, Thu Dec 30 07:19:31 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>
23		20
24	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>	22	# include <sys/mman.h>
27	# elif __freebsd	23	#endif
28	# include <sys/socket.h>	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
29	# include <sys/uio.h>	68	# include <sys/time.h>
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		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
34	# else	216	# else
35	# error sendfile support requested but not available	217	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	218	# endif
37	#endif	219	#endif
38		220	#ifndef MAP_HUGETLB
39	/* number of seconds after which idle threads exit */	221	# define MAP_HUGETLB 0
40	#define IDLE_TIMEOUT 10
41
42	/* used for struct dirent, AIX doesn't provide it */
43	#ifndef NAME_MAX
44	# define NAME_MAX 4096
45	#endif	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
46		235
47	/* buffer size for various temporary buffers */	236	#ifndef PAGESIZE
48	#define AIO_BUFSIZE 65536	237	# define PAGESIZE sysconf (_SC_PAGESIZE)
		238	#endif
49		239
50	#define dBUF \	240	static int req_invoke (eio_req *req);
51	char *aio_buf; \	241	#define EIO_FINISH(req) req_invoke (req)
52	LOCK (wrklock); \	242	static void req_destroy (eio_req *grp);
53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	243	#define EIO_DESTROY(req) req_destroy (req)
54	UNLOCK (wrklock); \
55	if (!aio_buf) \
56	return -1;
57
58	typedef SV SV8; /* byte-sv, used for argument-checking */
59		244
60	enum {	245	enum {
61	REQ_QUIT,	246	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
62	REQ_OPEN, REQ_CLOSE,
63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
64	REQ_SENDFILE,
65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66	REQ_FSYNC, REQ_FDATASYNC,
67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68	REQ_MKNOD, REQ_READDIR,
69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70	REQ_GROUP, REQ_NOP,
71	REQ_BUSY,
72	};	247	};
73		248
74	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
75	#define AIO_GRP_KLASS "IO::AIO::GRP"
76		250
77	typedef struct aio_cb
78	{
79	struct aio_cb *volatile next;
80
81	SV *callback, *fh;
82	SV *sv1, *sv2;
83	void *ptr1, *ptr2;
84	off_t offs;
85	size_t size;
86	ssize_t result;
87
88	STRLEN stroffset;
89	int type;
90	int int1, int2;
91	int errorno;
92	mode_t mode; /* open */
93
94	unsigned char flags;
95	unsigned char pri;
96
97	SV *self; /* the perl counterpart of this request, if any */
98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
99	} aio_cb;
100
101	enum {
102	FLAG_CANCELLED = 0x01, /* request was cancelled */
103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105	};
106
107	typedef aio_cb *aio_req;	251	typedef eio_req *aio_req;
108	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
109		253
110	enum {	254	static SV *on_next_submit;
111	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
112	PRI_MAX = 4,	256	static int max_outstanding;
113		257
114	DEFAULT_PRI = 0,	258	static s_epipe respipe;
115	PRI_BIAS = -PRI_MIN,
116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117	};
118		259
119	#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121	static unsigned int max_poll_time = 0;
122	static unsigned int max_poll_reqs = 0;
123
124	/* calculcate time difference in ~1/AIO_TICKS of a second */
125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126	{
127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
129	}
130
131	static thread_t main_tid;
132	static int main_sig;
133	static int block_sig_level;
134
135	void block_sig ()
136	{
137	sigset_t ss;
138
139	if (block_sig_level++)
140	return;
141
142	if (!main_sig)
143	return;
144
145	sigemptyset (&ss);
146	sigaddset (&ss, main_sig);
147	pthread_sigmask (SIG_BLOCK, &ss, 0);
148	}
149
150	void unblock_sig ()
151	{
152	sigset_t ss;
153
154	if (--block_sig_level)
155	return;
156
157	if (!main_sig)
158	return;
159
160	sigemptyset (&ss);
161	sigaddset (&ss, main_sig);
162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	/* worker threads management */
170	static mutex_t wrklock = MUTEX_INIT;
171
172	typedef struct worker {
173	/* locked by wrklock */
174	struct worker *prev, *next;
175
176	thread_t tid;
177
178	/* locked by reslock, reqlock or wrklock */
179	aio_req req; /* currently processed request */
180	void *dbuf;
181	DIR *dirp;
182	} worker;
183
184	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186	static void worker_clear (worker *wrk)
187	{
188	if (wrk->dirp)
189	{
190	closedir (wrk->dirp);
191	wrk->dirp = 0;
192	}
193
194	if (wrk->dbuf)
195	{
196	free (wrk->dbuf);
197	wrk->dbuf = 0;
198	}
199	}
200
201	static void worker_free (worker *wrk)
202	{
203	wrk->next->prev = wrk->prev;
204	wrk->prev->next = wrk->next;
205
206	free (wrk);
207	}
208
209	static volatile unsigned int nreqs, nready, npending;
210	static volatile unsigned int max_idle = 4;
211	static volatile unsigned int max_outstanding = 0xffffffff;
212	static int respipe [2];
213
214	static mutex_t reslock = MUTEX_INIT;
215	static mutex_t reqlock = MUTEX_INIT;
216	static cond_t reqwait = COND_INIT;
217
218	#if WORDACCESS_UNSAFE
219
220	static unsigned int get_nready ()
221	{
222	unsigned int retval;
223
224	LOCK (reqlock);
225	retval = nready;
226	UNLOCK (reqlock);
227
228	return retval;
229	}
230
231	static unsigned int get_npending ()
232	{
233	unsigned int retval;
234
235	LOCK (reslock);
236	retval = npending;
237	UNLOCK (reslock);
238
239	return retval;
240	}
241
242	static unsigned int get_nthreads ()
243	{
244	unsigned int retval;
245
246	LOCK (wrklock);
247	retval = started;
248	UNLOCK (wrklock);
249
250	return retval;
251	}
252
253	#else
254
255	# define get_nready() nready
256	# define get_npending() npending
257	# define get_nthreads() started
258
259	#endif
260
261	/*
262	* a somewhat faster data structure might be nice, but
263	* with 8 priorities this actually needs <20 insns
264	* per shift, the most expensive operation.
265	*/
266	typedef struct {
267	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268	int size;
269	} reqq;
270
271	static reqq req_queue;
272	static reqq res_queue;
273
274	int reqq_push (reqq *q, aio_req req)
275	{
276	int pri = req->pri;
277	req->next = 0;
278
279	if (q->qe[pri])
280	{
281	q->qe[pri]->next = req;
282	q->qe[pri] = req;
283	}
284	else
285	q->qe[pri] = q->qs[pri] = req;
286
287	return q->size++;
288	}
289
290	aio_req reqq_shift (reqq *q)
291	{
292	int pri;
293
294	if (!q->size)
295	return 0;
296
297	--q->size;
298
299	for (pri = NUM_PRI; pri--; )
300	{
301	aio_req req = q->qs[pri];
302
303	if (req)
304	{
305	if (!(q->qs[pri] = req->next))
306	q->qe[pri] = 0;
307
308	return req;
309	}
310	}
311
312	abort ();
313	}
314
315	static int poll_cb ();
316	static int req_invoke (aio_req req);
317	static void req_free (aio_req req);	260	static void req_destroy (aio_req req);
318	static void req_cancel (aio_req req);	261	static void req_cancel (aio_req req);
319		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
320	/* must be called at most once */	275	/* must be called at most once */
321	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
322	{	277	{
323	if (!req->self)	278	if (!req->self)
324	{	279	{
325	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
326	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327	}	282	}
328		283
329	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330	}	285	}
331		286
332	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
333	{	288	{
334	MAGIC *mg;	289	MAGIC *mg;
335		290
336	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")))
337	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
338		296
339	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340		298
341	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
342	}	300	}
343		301
344	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
345	{	303	{
346	block_sig ();	304	if (grp->sv2 && SvOK (grp->sv2))
347
348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349	{	305	{
350	int old_len = grp->size;
351
352	if (grp->sv2 && SvOK (grp->sv2))
353	{
354	dSP;	306	dSP;
355		307
356	ENTER;	308	ENTER;
357	SAVETMPS;	309	SAVETMPS;
358	PUSHMARK (SP);	310	PUSHMARK (SP);
359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	311	XPUSHs (req_sv (grp, aio_grp_stash));
360	PUTBACK;	312	PUTBACK;
361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362	SPAGAIN;	314	SPAGAIN;
363	FREETMPS;	315	FREETMPS;
364	LEAVE;	316	LEAVE;
365	}
366
367	/* stop if no progress has been made */
368	if (old_len == grp->size)
369	{
370	SvREFCNT_dec (grp->sv2);
371	grp->sv2 = 0;
372	break;
373	}
374	}	317	}
375
376	unblock_sig ();
377	}	318	}
378		319
379	static void aio_grp_dec (aio_req grp)	320	static void req_submit (eio_req *req)
380	{	321	{
381	--grp->size;	322	eio_submit (req);
382		323
383	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
384	aio_grp_feed (grp);
385
386	/* finish, if done */
387	if (!grp->size && grp->int1)
388	{	325	{
389	block_sig ();	326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
390		328
391	if (!req_invoke (grp))	329	on_next_submit = 0;
392	{
393	req_free (grp);
394	unblock_sig ();
395	croak (0);
396	}
397		330
398	req_free (grp);	331	PUSHMARK (SP);
399	unblock_sig ();	332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
400	}	334	}
401	}	335	}
402		336
403	static int req_invoke (aio_req req)	337	static int req_invoke (eio_req *req)
404	{	338	{
405	dSP;
406
407	if (req->flags & FLAG_SV1_RO_OFF)	339	if (req->flags & FLAG_SV2_RO_OFF)
408	SvREADONLY_off (req->sv1);	340	SvREADONLY_off (req->sv2);
409		341
410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	342	if (!EIO_CANCELLED (req) && req->callback)
411	{	343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
412	ENTER;	348	ENTER;
413	SAVETMPS;	349	SAVETMPS;
414	PUSHMARK (SP);	350	PUSHMARK (SP);
415	EXTEND (SP, 1);	351	EXTEND (SP, 1);
416		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
417	switch (req->type)	366	switch (req->type)
418	{	367	{
419	case REQ_READDIR:	368	case EIO_READDIR:
420	{	369	{
421	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
422		371
423	if (req->result >= 0)	372	if (req->result >= 0)
424	{	373	{
425	int i;	374	int i;
426	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427	AV *av = newAV ();	377	AV *av = newAV ();
428		378
429	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
430		380
431	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
432	{	382	{
433	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434		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
435	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);
436	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
437	}	417	}
438		418
439	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
440	}	420	}
441		421
442	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))));
443	}	426	}
444	break;	427	break;
445		428
446	case REQ_OPEN:	429	case EIO_OPEN:
447	{	430	{
448	/* convert fd to fh */	431	/* convert fd to fh */
449	SV *fh;	432	SV *fh = &PL_sv_undef;
450		433
451	PUSHs (sv_2mortal (newSViv (req->result)));	434	if (req->result >= 0)
452	PUTBACK;	435	{
453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	436	GV *gv = (GV *)sv_newmortal ();
454	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);
455		443
456	fh = POPs;	444	symlen = snprintf (
457	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
458	XPUSHs (fh);	456	PUSHs (fh);
459	}	457	}
460	break;	458	break;
461		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
462	case REQ_GROUP:	490	case EIO_GROUP:
463	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
464		492
465	if (req->sv1)	493	if (req->sv1)
466	{	494	{
467	int i;	495	int i;
…		…
471	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
472	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
473	}	501	}
474	break;	502	break;
475		503
476	case REQ_NOP:	504	case EIO_NOP:
477	case REQ_BUSY:	505	case EIO_BUSY:
478	break;	506	break;
479		507
480	case REQ_READLINK:	508	case EIO_READLINK:
481	if (req->result > 0)	509	if (req->result > 0)
482	{	510	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
483	SvCUR_set (req->sv1, req->result);
484	*SvEND (req->sv1) = 0;
485	PUSHs (req->sv1);
486	}
487	break;	511	break;
488		512
489	case REQ_STAT:	513	case EIO_STAT:
490	case REQ_LSTAT:	514	case EIO_LSTAT:
491	case REQ_FSTAT:	515	case EIO_FSTAT:
492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
493	PL_laststatval = req->result;	517	PL_laststatval = req->result;
494	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
495	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
496	break;	520	break;
497		521
498	case REQ_READ:	522	case EIO_READ:
		523	{
499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	524	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
500	*SvEND (req->sv1) = 0;	525	*SvEND (req->sv2) = 0;
501	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
502	break;	530	break;
503		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
504	default:	537	default:
505	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
506	break;	539	break;
507	}	540	}
508		541
509	errno = req->errorno;	542	errno = req->errorno;
510		543
511	PUTBACK;	544	PUTBACK;
512	call_sv (req->callback, G_VOID | G_EVAL);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513	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;
514		552
515	FREETMPS;	553	FREETMPS;
516	LEAVE;	554	LEAVE;
		555
		556	PUTBACK;
517	}	557	}
518		558
519	if (req->grp)
520	{
521	aio_req grp = req->grp;
522
523	/* unlink request */
524	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527	if (grp->grp_first == req)
528	grp->grp_first = req->grp_next;
529
530	aio_grp_dec (grp);
531	}
532
533	return !SvTRUE (ERRSV);	559	return !!SvTRUE (ERRSV);
534	}	560	}
535		561
536	static void req_free (aio_req req)	562	static void req_destroy (aio_req req)
537	{	563	{
538	if (req->self)	564	if (req->self)
539	{	565	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	566	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	567	SvREFCNT_dec (req->self);
542	}	568	}
543		569
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
548		573
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	574	Safefree (req);
553	}	575	}
554		576
555	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
556	{	578	{
557	aio_req sub;	579	aio_req sub;
558		580
559	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
560	return;	582	return;
561		583
562	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	585	grp->sv2 = 0;
564		586
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	588	}
568		589
569	static void req_cancel (aio_req req)	590	static void
		591	create_respipe (void)
570	{	592	{
571	req->flags |= FLAG_CANCELLED;	593	if (s_epipe_renew (&respipe))
572		594	croak ("IO::AIO: unable to initialize result pipe");
573	req_cancel_subs (req);
574	}	595	}
575		596
576	static void *aio_proc(void *arg);
577
578	static void start_thread (void)
579	{
580	worker *wrk = calloc (1, sizeof (worker));
581
582	if (!wrk)
583	croak ("unable to allocate worker thread data");
584
585	LOCK (wrklock);
586
587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
588	{
589	wrk->prev = &wrk_first;
590	wrk->next = wrk_first.next;
591	wrk_first.next->prev = wrk;
592	wrk_first.next = wrk;
593	++started;
594	}
595	else
596	free (wrk);
597
598	UNLOCK (wrklock);
599	}
600
601	static void maybe_start_thread ()
602	{
603	if (get_nthreads () >= wanted)
604	return;
605
606	/* todo: maybe use idle here, but might be less exact */
607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608	return;
609
610	start_thread ();
611	}
612
613	static void req_send (aio_req req)
614	{
615	block_sig ();
616
617	++nreqs;
618
619	LOCK (reqlock);
620	++nready;
621	reqq_push (&req_queue, req);
622	COND_SIGNAL (reqwait);
623	UNLOCK (reqlock);
624
625	unblock_sig ();
626
627	maybe_start_thread ();
628	}
629
630	static void end_thread (void)
631	{
632	aio_req req;
633
634	Newz (0, req, 1, aio_cb);
635
636	req->type = REQ_QUIT;
637	req->pri = PRI_MAX + PRI_BIAS;
638
639	LOCK (reqlock);
640	reqq_push (&req_queue, req);
641	COND_SIGNAL (reqwait);
642	UNLOCK (reqlock);
643
644	LOCK (wrklock);
645	--started;
646	UNLOCK (wrklock);
647	}
648
649	static void set_max_idle (int nthreads)
650	{
651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
652	max_idle = nthreads <= 0 ? 1 : nthreads;
653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654	}
655
656	static void min_parallel (int nthreads)
657	{
658	if (wanted < nthreads)
659	wanted = nthreads;
660	}
661
662	static void max_parallel (int nthreads)
663	{
664	if (wanted > nthreads)
665	wanted = nthreads;
666
667	while (started > wanted)
668	end_thread ();
669	}
670
671	static void poll_wait ()	597	static void poll_wait (void)
672	{	598	{
673	fd_set rfd;
674
675	while (nreqs)	599	while (eio_nreqs ())
676	{	600	{
677	int size;	601	int size;
678	if (WORDACCESS_UNSAFE) LOCK (reslock);	602
		603	X_LOCK (reslock);
679	size = res_queue.size;	604	size = res_queue.size;
680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	605	X_UNLOCK (reslock);
681		606
682	if (size)	607	if (size)
683	return;	608	return;
684		609
685	maybe_start_thread ();	610	etp_maybe_start_thread ();
686		611
687	FD_ZERO(&rfd);	612	s_epipe_wait (&respipe);
688	FD_SET(respipe [0], &rfd);
689
690	select (respipe [0] + 1, &rfd, 0, 0, 0);
691	}	613	}
692	}	614	}
693		615
694	static int poll_cb ()	616	static int poll_cb (void)
695	{	617	{
696	dSP;
697	int count = 0;
698	int maxreqs = max_poll_reqs;
699	int do_croak = 0;
700	struct timeval tv_start, tv_now;
701	aio_req req;
702
703	if (max_poll_time)
704	gettimeofday (&tv_start, 0);
705
706	block_sig ();
707
708	for (;;)	618	for (;;)
709	{	619	{
710	for (;;)	620	int res = eio_poll ();
711	{
712	maybe_start_thread ();
713		621
714	LOCK (reslock);	622	if (res > 0)
715	req = reqq_shift (&res_queue);
716
717	if (req)
718	{
719	--npending;
720
721	if (!res_queue.size)
722	{
723	/* read any signals sent by the worker threads */
724	char buf [4];
725	while (read (respipe [0], buf, 4) == 4)
726	;
727	}
728	}
729
730	UNLOCK (reslock);
731
732	if (!req)
733	break;
734
735	--nreqs;
736
737	if (req->type == REQ_GROUP && req->size)
738	{
739	req->int1 = 1; /* mark request as delayed */
740	continue;
741	}
742	else
743	{
744	if (!req_invoke (req))
745	{
746	req_free (req);
747	unblock_sig ();
748	croak (0);	623	croak (0);
749	}
750		624
751	count++;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
752	}	626	return res;
753
754	req_free (req);
755
756	if (maxreqs && !--maxreqs)
757	break;
758
759	if (max_poll_time)
760	{
761	gettimeofday (&tv_now, 0);
762
763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764	break;
765	}
766	}
767
768	if (nreqs <= max_outstanding)
769	break;
770		627
771	poll_wait ();	628	poll_wait ();
772
773	++maxreqs;
774	}	629	}
775
776	unblock_sig ();
777	return count;
778	}	630	}
779		631
780	static void create_pipe ()	632	static void atfork_child (void)
781	{	633	{
782	if (pipe (respipe))	634	create_respipe ();
783	croak ("unable to initialize result pipe");
784
785	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
786	croak ("cannot set result pipe to nonblocking mode");
787
788	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790	}	635	}
791		636
792	/*****************************************************************************/	637	/*****************************************************************************/
793	/* work around various missing functions */
794		638
795	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
796	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
797	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
798		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
799	/*	643	# define PROT_NONE 0
800	* make our pread/pwrite safe against themselves, but not against	644	# define PROT_WRITE 0
801	* normal read/write by using a mutex. slows down execution a lot,	645	# define MAP_PRIVATE 0
802	* but that's your problem, not mine.	646	# define MAP_SHARED 0
803	*/	647	# define MAP_FIXED 0
804	static mutex_t preadwritelock = MUTEX_INIT;
805
806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807	{
808	ssize_t res;
809	off_t ooffset;
810
811	LOCK (preadwritelock);
812	ooffset = lseek (fd, 0, SEEK_CUR);
813	lseek (fd, offset, SEEK_SET);
814	res = read (fd, buf, count);
815	lseek (fd, ooffset, SEEK_SET);
816	UNLOCK (preadwritelock);
817
818	return res;
819	}
820
821	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822	{
823	ssize_t res;
824	off_t ooffset;
825
826	LOCK (preadwritelock);
827	ooffset = lseek (fd, 0, SEEK_CUR);
828	lseek (fd, offset, SEEK_SET);
829	res = write (fd, buf, count);
830	lseek (fd, offset, SEEK_SET);
831	UNLOCK (preadwritelock);
832
833	return res;
834	}
835	#endif
836
837	#if !HAVE_FDATASYNC
838	# define fdatasync fsync
839	#endif
840
841	#if !HAVE_READAHEAD
842	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845	{
846	dBUF;
847
848	while (count > 0)
849	{
850	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852	pread (fd, aio_buf, len, offset);
853	offset += len;
854	count -= len;
855	}
856
857	errno = 0;
858	}
859
860	#endif
861
862	#if !HAVE_READDIR_R
863	# define readdir_r aio_readdir_r
864
865	static mutex_t readdirlock = MUTEX_INIT;
866
867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868	{
869	struct dirent *e;
870	int errorno;
871
872	LOCK (readdirlock);
873
874	e = readdir (dirp);
875	errorno = errno;
876
877	if (e)
878	{
879	*res = ent;
880	strcpy (ent->d_name, e->d_name);
881	}
882	else
883	*res = 0;
884
885	UNLOCK (readdirlock);
886
887	errno = errorno;
888	return e ? 0 : -1;
889	}
890	#endif
891
892	/* sendfile always needs emulation */
893	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894	{
895	ssize_t res;
896
897	if (!count)
898	return 0;
899
900	#if HAVE_SENDFILE
901	# if __linux
902	res = sendfile (ofd, ifd, &offset, count);
903
904	# elif __freebsd
905	/*
906	* Of course, the freebsd sendfile is a dire hack with no thoughts
907	* wasted on making it similar to other I/O functions.
908	*/
909	{
910	off_t sbytes;
911	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913	if (res < 0 && sbytes)
914	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915	res = sbytes;
916	}
917
918	# elif __hpux
919	res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921	# elif __solaris
922	{
923	struct sendfilevec vec;
924	size_t sbytes;
925
926	vec.sfv_fd = ifd;
927	vec.sfv_flag = 0;
928	vec.sfv_off = offset;
929	vec.sfv_len = count;
930
931	res = sendfilev (ofd, &vec, 1, &sbytes);
932
933	if (res < 0 && sbytes)
934	res = sbytes;
935	}
936
937	# endif	648	#endif
938	#else
939	res = -1;
940	errno = ENOSYS;
941	#endif
942		649
943	if (res < 0	650	#define MMAP_MAGIC PERL_MAGIC_ext
944	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
945	#if __solaris
946	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
947	#endif
948	)
949	)
950	{
951	/* emulate sendfile. this is a major pain in the ass */
952	dBUF;
953		651
954	res = 0;	652	static int
		653	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		654	{
		655	int old_errno = errno;
		656	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		657	errno = old_errno;
955		658
956	while (count)	659	mg->mg_obj = 0; /* just in case */
957	{
958	ssize_t cnt;
959
960	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
961		660
962	if (cnt <= 0)	661	SvREADONLY_off (sv);
963	{
964	if (cnt && !res) res = -1;
965	break;
966	}
967		662
968	cnt = write (ofd, aio_buf, cnt);	663	if (SvPVX (sv) != mg->mg_ptr)
		664	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
969		665
970	if (cnt <= 0)	666	SvCUR_set (sv, 0);
971	{	667	SvPVX (sv) = 0;
972	if (cnt && !res) res = -1;	668	SvOK_off (sv);
973	break;
974	}
975		669
976	offset += cnt;
977	res += cnt;
978	count -= cnt;
979	}
980	}
981
982	return res;	670	return 0;
983	}	671	}
984		672
985	/* read a full directory */	673	static MGVTBL mmap_vtbl = {
986	static void scandir_ (aio_req req, worker *self)	674	0, 0, 0, 0, mmap_free
987	{	675	};
988	DIR *dirp;
989	union
990	{
991	struct dirent d;
992	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993	} *u;
994	struct dirent *entp;
995	char *name, *names;
996	int memlen = 4096;
997	int memofs = 0;
998	int res = 0;
999	int errorno;
1000
1001	LOCK (wrklock);
1002	self->dirp = dirp = opendir (req->ptr1);
1003	self->dbuf = u = malloc (sizeof (*u));
1004	req->flags |= FLAG_PTR2_FREE;
1005	req->ptr2 = names = malloc (memlen);
1006	UNLOCK (wrklock);
1007
1008	if (dirp && u && names)
1009	for (;;)
1010	{
1011	errno = 0;
1012	readdir_r (dirp, &u->d, &entp);
1013
1014	if (!entp)
1015	break;
1016
1017	name = entp->d_name;
1018
1019	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020	{
1021	int len = strlen (name) + 1;
1022
1023	res++;
1024
1025	while (memofs + len > memlen)
1026	{
1027	memlen *= 2;
1028	LOCK (wrklock);
1029	req->ptr2 = names = realloc (names, memlen);
1030	UNLOCK (wrklock);
1031
1032	if (!names)
1033	break;
1034	}
1035
1036	memcpy (names + memofs, name, len);
1037	memofs += len;
1038	}
1039	}
1040
1041	if (errno)
1042	res = -1;
1043
1044	req->result = res;
1045	}
1046		676
1047	/*****************************************************************************/	677	/*****************************************************************************/
1048		678
1049	static void *aio_proc (void *thr_arg)	679	static SV *
		680	get_cb (SV *cb_sv)
1050	{	681	{
1051	aio_req req;	682	SvGETMAGIC (cb_sv);
1052	struct timespec ts;	683	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1053	worker *self = (worker *)thr_arg;
1054
1055	/* try to distribute timeouts somewhat evenly */
1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057	* (1000000000UL / 1024UL);
1058
1059	for (;;)
1060	{
1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063	LOCK (reqlock);
1064
1065	for (;;)
1066	{
1067	self->req = req = reqq_shift (&req_queue);
1068
1069	if (req)
1070	break;
1071
1072	++idle;
1073
1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075	== ETIMEDOUT)
1076	{
1077	if (idle > max_idle)
1078	{
1079	--idle;
1080	UNLOCK (reqlock);
1081	LOCK (wrklock);
1082	--started;
1083	UNLOCK (wrklock);
1084	goto quit;
1085	}
1086
1087	/* we are allowed to idle, so do so without any timeout */
1088	COND_WAIT (reqwait, reqlock);
1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090	}
1091
1092	--idle;
1093	}
1094
1095	--nready;
1096
1097	UNLOCK (reqlock);
1098
1099	errno = 0; /* strictly unnecessary */
1100
1101	if (!(req->flags & FLAG_CANCELLED))
1102	switch (req->type)
1103	{
1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115	case REQ_CLOSE: req->result = close (req->int1); break;
1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
1127	case REQ_READDIR: scandir_ (req, self); break;
1128
1129	case REQ_BUSY:
1130	{
1131	struct timeval tv;
1132
1133	tv.tv_sec = req->int1;
1134	tv.tv_usec = req->int2;
1135
1136	req->result = select (0, 0, 0, 0, &tv);
1137	}
1138
1139	case REQ_GROUP:
1140	case REQ_NOP:
1141	break;
1142
1143	case REQ_QUIT:
1144	goto quit;
1145
1146	default:
1147	req->result = ENOSYS;
1148	break;
1149	}
1150
1151	req->errorno = errno;
1152
1153	LOCK (reslock);
1154
1155	++npending;
1156
1157	if (!reqq_push (&res_queue, req))
1158	{
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	/* optionally signal the main thread asynchronously */
1163	if (main_sig)
1164	pthread_kill (main_tid, main_sig);
1165	}
1166
1167	self->req = 0;
1168	worker_clear (self);
1169
1170	UNLOCK (reslock);
1171	}
1172
1173	quit:
1174	LOCK (wrklock);
1175	worker_free (self);
1176	UNLOCK (wrklock);
1177
1178	return 0;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	static void atfork_prepare (void)
1184	{
1185	LOCK (wrklock);
1186	LOCK (reqlock);
1187	LOCK (reslock);
1188	#if !HAVE_PREADWRITE
1189	LOCK (preadwritelock);
1190	#endif
1191	#if !HAVE_READDIR_R
1192	LOCK (readdirlock);
1193	#endif
1194	}
1195
1196	static void atfork_parent (void)
1197	{
1198	#if !HAVE_READDIR_R
1199	UNLOCK (readdirlock);
1200	#endif
1201	#if !HAVE_PREADWRITE
1202	UNLOCK (preadwritelock);
1203	#endif
1204	UNLOCK (reslock);
1205	UNLOCK (reqlock);
1206	UNLOCK (wrklock);
1207	}
1208
1209	static void atfork_child (void)
1210	{
1211	aio_req prv;
1212
1213	while (prv = reqq_shift (&req_queue))
1214	req_free (prv);
1215
1216	while (prv = reqq_shift (&res_queue))
1217	req_free (prv);
1218
1219	while (wrk_first.next != &wrk_first)
1220	{
1221	worker *wrk = wrk_first.next;
1222
1223	if (wrk->req)
1224	req_free (wrk->req);
1225
1226	worker_clear (wrk);
1227	worker_free (wrk);
1228	}
1229
1230	started = 0;
1231	idle = 0;
1232	nreqs = 0;
1233	nready = 0;
1234	npending = 0;
1235
1236	close (respipe [0]);
1237	close (respipe [1]);
1238	create_pipe ();
1239
1240	atfork_parent ();
1241	}	684	}
1242		685
1243	#define dREQ \	686	#define dREQ \
		687	SV *cb_cv; \
1244	aio_req req; \	688	aio_req req; \
1245	int req_pri = next_pri; \	689	int req_pri = next_pri; \
1246	next_pri = DEFAULT_PRI + PRI_BIAS; \	690	next_pri = EIO_PRI_DEFAULT; \
1247	\	691	\
1248	if (SvOK (callback) && !SvROK (callback)) \	692	cb_cv = get_cb (callback); \
1249	croak ("callback must be undef or of reference type"); \
1250	\	693	\
1251	Newz (0, req, 1, aio_cb); \	694	Newz (0, req, 1, eio_req); \
1252	if (!req) \	695	if (!req) \
1253	croak ("out of memory during aio_req allocation"); \	696	croak ("out of memory during eio_req allocation"); \
1254	\	697	\
1255	req->callback = newSVsv (callback); \	698	req->callback = SvREFCNT_inc (cb_cv); \
1256	req->pri = req_pri	699	req->pri = req_pri
1257		700
1258	#define REQ_SEND \	701	#define REQ_SEND \
		702	PUTBACK; \
1259	req_send (req); \	703	req_submit (req); \
		704	SPAGAIN; \
1260	\	705	\
1261	if (GIMME_V != G_VOID) \	706	if (GIMME_V != G_VOID) \
1262	XPUSHs (req_sv (req, AIO_REQ_KLASS));	707	XPUSHs (req_sv (req, aio_req_stash));
1263		708
1264	MODULE = IO::AIO PACKAGE = IO::AIO	709	MODULE = IO::AIO PACKAGE = IO::AIO
1265		710
1266	PROTOTYPES: ENABLE	711	PROTOTYPES: ENABLE
1267		712
1268	BOOT:	713	BOOT:
1269	{	714	{
		715	static const struct {
		716	const char *name;
		717	IV iv;
		718	} *civ, const_iv[] = {
		719	# define const_niv(name, value) { # name, (IV) value },
		720	# define const_iv(name) { # name, (IV) name },
		721	# define const_eio(name) { # name, (IV) EIO_ ## name },
		722	const_iv (EXDEV)
		723	const_iv (ENOSYS)
		724	const_iv (O_RDONLY)
		725	const_iv (O_WRONLY)
		726	const_iv (O_RDWR)
		727	const_iv (O_CREAT)
		728	const_iv (O_TRUNC)
		729	const_iv (O_EXCL)
		730	const_iv (O_APPEND)
		731	#ifndef _WIN32
		732	const_iv (S_IFIFO)
		733	#endif
		734	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		735	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		736	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		737	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		738	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		739	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		740
		741	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		742	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		743	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		744	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		745	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		746
		747	const_iv (ST_RDONLY)
		748	const_iv (ST_NOSUID)
		749	const_iv (ST_NODEV)
		750	const_iv (ST_NOEXEC)
		751	const_iv (ST_SYNCHRONOUS)
		752	const_iv (ST_MANDLOCK)
		753	const_iv (ST_WRITE)
		754	const_iv (ST_APPEND)
		755	const_iv (ST_IMMUTABLE)
		756	const_iv (ST_NOATIME)
		757	const_iv (ST_NODIRATIME)
		758	const_iv (ST_RELATIME)
		759
		760	const_iv (PROT_NONE)
		761	const_iv (PROT_EXEC)
		762	const_iv (PROT_READ)
		763	const_iv (PROT_WRITE)
		764
		765	/*const_iv (MAP_FIXED)*/
		766	const_iv (MAP_PRIVATE)
		767	const_iv (MAP_SHARED)
		768	const_iv (MAP_ANONYMOUS)
		769
		770	/* linuxish */
		771	const_iv (MAP_HUGETLB)
		772	const_iv (MAP_LOCKED)
		773	const_iv (MAP_NORESERVE)
		774	const_iv (MAP_POPULATE)
		775	const_iv (MAP_NONBLOCK)
		776
		777	const_eio (MCL_FUTURE)
		778	const_eio (MCL_CURRENT)
		779
		780	const_eio (MS_ASYNC)
		781	const_eio (MS_INVALIDATE)
		782	const_eio (MS_SYNC)
		783
		784	const_eio (MT_MODIFY)
		785
		786	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		787	const_eio (SYNC_FILE_RANGE_WRITE)
		788	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		789
		790	const_eio (READDIR_DENTS)
		791	const_eio (READDIR_DIRS_FIRST)
		792	const_eio (READDIR_STAT_ORDER)
		793	const_eio (READDIR_FOUND_UNKNOWN)
		794
		795	const_eio (DT_UNKNOWN)
		796	const_eio (DT_FIFO)
		797	const_eio (DT_CHR)
		798	const_eio (DT_DIR)
		799	const_eio (DT_BLK)
		800	const_eio (DT_REG)
		801	const_eio (DT_LNK)
		802	const_eio (DT_SOCK)
		803	const_eio (DT_WHT)
		804	};
		805
1270	HV *stash = gv_stashpv ("IO::AIO", 1);	806	aio_stash = gv_stashpv ("IO::AIO" , 1);
		807	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		808	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1271		809
1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	810	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	811	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279		812
		813	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		814
1280	create_pipe ();	815	create_respipe ();
1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);	816
		817	if (eio_init (want_poll, done_poll) < 0)
		818	croak ("IO::AIO: unable to initialise eio library");
		819
		820	/* atfork child called in fifo order, so before eio's handler */
		821	X_THREAD_ATFORK (0, 0, atfork_child);
1282	}	822	}
1283		823
1284	void	824	void
1285	max_poll_reqs (int nreqs)	825	max_poll_reqs (int nreqs)
1286	PROTOTYPE: $	826	PROTOTYPE: $
1287	CODE:	827	CODE:
1288	max_poll_reqs = nreqs;	828	eio_set_max_poll_reqs (nreqs);
1289		829
1290	void	830	void
1291	max_poll_time (double nseconds)	831	max_poll_time (double nseconds)
1292	PROTOTYPE: $	832	PROTOTYPE: $
1293	CODE:	833	CODE:
1294	max_poll_time = nseconds * AIO_TICKS;	834	eio_set_max_poll_time (nseconds);
1295		835
1296	void	836	void
1297	min_parallel (int nthreads)	837	min_parallel (int nthreads)
1298	PROTOTYPE: $	838	PROTOTYPE: $
		839	CODE:
		840	eio_set_min_parallel (nthreads);
1299		841
1300	void	842	void
1301	max_parallel (int nthreads)	843	max_parallel (int nthreads)
1302	PROTOTYPE: $	844	PROTOTYPE: $
		845	CODE:
		846	eio_set_max_parallel (nthreads);
1303		847
1304	void	848	void
1305	max_idle (int nthreads)	849	max_idle (int nthreads)
1306	PROTOTYPE: $	850	PROTOTYPE: $
1307	CODE:	851	CODE:
1308	set_max_idle (nthreads);	852	eio_set_max_idle (nthreads);
1309		853
1310	int	854	void
1311	max_outstanding (int maxreqs)	855	max_outstanding (int maxreqs)
1312	PROTOTYPE: $	856	PROTOTYPE: $
1313	CODE:	857	CODE:
1314	RETVAL = max_outstanding;
1315	max_outstanding = maxreqs;	858	max_outstanding = maxreqs;
1316	OUTPUT:
1317	RETVAL
1318		859
1319	void	860	void
1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	861	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1321	SV8 * pathname
1322	int flags
1323	int mode
1324	SV * callback
1325	PROTOTYPE: $$$;$
1326	PPCODE:	862	PPCODE:
1327	{	863	{
1328	dREQ;	864	dREQ;
1329		865
1330	req->type = REQ_OPEN;	866	req->type = EIO_OPEN;
1331	req->sv1 = newSVsv (pathname);	867	req->sv1 = newSVsv (pathname);
1332	req->ptr1 = SvPVbyte_nolen (req->sv1);	868	req->ptr1 = SvPVbyte_nolen (req->sv1);
1333	req->int1 = flags;	869	req->int1 = flags;
1334	req->mode = mode;	870	req->int2 = mode;
1335		871
1336	REQ_SEND;	872	REQ_SEND;
1337	}	873	}
1338		874
1339	void	875	void
1340	aio_close (fh,callback=&PL_sv_undef)	876	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341	SV * fh
1342	SV * callback
1343	PROTOTYPE: $;$
1344	ALIAS:	877	ALIAS:
1345	aio_close = REQ_CLOSE
1346	aio_fsync = REQ_FSYNC	878	aio_fsync = EIO_FSYNC
1347	aio_fdatasync = REQ_FDATASYNC	879	aio_fdatasync = EIO_FDATASYNC
1348	PPCODE:	880	PPCODE:
1349	{	881	{
		882	int fd = s_fileno_croak (fh, 0);
1350	dREQ;	883	dREQ;
1351		884
1352	req->type = ix;	885	req->type = ix;
1353	req->fh = newSVsv (fh);	886	req->sv1 = newSVsv (fh);
1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	887	req->int1 = fd;
1355		888
1356	REQ_SEND (req);	889	REQ_SEND (req);
1357	}	890	}
1358		891
1359	void	892	void
		893	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		894	PPCODE:
		895	{
		896	int fd = s_fileno_croak (fh, 0);
		897	dREQ;
		898
		899	req->type = EIO_SYNC_FILE_RANGE;
		900	req->sv1 = newSVsv (fh);
		901	req->int1 = fd;
		902	req->offs = offset;
		903	req->size = nbytes;
		904	req->int2 = flags;
		905
		906	REQ_SEND (req);
		907	}
		908
		909	void
		910	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		911	PPCODE:
		912	{
		913	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		914	int fd = s_fileno_croak (fh, 0);
		915	dREQ;
		916
		917	if (close_pipe < 0)
		918	{
		919	int pipefd [2];
		920
		921	if (pipe (pipefd) < 0
		922	|| close (pipefd [1]) < 0
		923	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		924	abort (); /*D*/
		925
		926	close_pipe = pipefd [0];
		927	}
		928
		929	req->type = EIO_DUP2;
		930	req->int1 = close_pipe;
		931	req->sv2 = newSVsv (fh);
		932	req->int2 = fd;
		933
		934	REQ_SEND (req);
		935	}
		936
		937	void
1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	938	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1361	SV * fh
1362	UV offset
1363	UV length
1364	SV8 * data
1365	UV dataoffset
1366	SV * callback
1367	ALIAS:	939	ALIAS:
1368	aio_read = REQ_READ	940	aio_read = EIO_READ
1369	aio_write = REQ_WRITE	941	aio_write = EIO_WRITE
1370	PROTOTYPE: $$$$$;$
1371	PPCODE:	942	PPCODE:
1372	{	943	{
1373	STRLEN svlen;	944	STRLEN svlen;
		945	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374	char *svptr = SvPVbyte (data, svlen);	946	char *svptr = SvPVbyte (data, svlen);
1375		947	UV len = SvUV (length);
1376	SvUPGRADE (data, SVt_PV);
1377	SvPOK_on (data);
1378		948
1379	if (dataoffset < 0)	949	if (dataoffset < 0)
1380	dataoffset += svlen;	950	dataoffset += svlen;
1381		951
1382	if (dataoffset < 0 || dataoffset > svlen)	952	if (dataoffset < 0 || dataoffset > svlen)
1383	croak ("data offset outside of string");	953	croak ("dataoffset outside of data scalar");
1384		954
1385	if (ix == REQ_WRITE)	955	if (ix == EIO_WRITE)
1386	{	956	{
1387	/* write: check length and adjust. */	957	/* write: check length and adjust. */
1388	if (length < 0 || length + dataoffset > svlen)	958	if (!SvOK (length) || len + dataoffset > svlen)
1389	length = svlen - dataoffset;	959	len = svlen - dataoffset;
1390	}	960	}
1391	else	961	else
1392	{	962	{
1393	/* read: grow scalar as necessary */	963	/* read: check type and grow scalar as necessary */
		964	SvUPGRADE (data, SVt_PV);
1394	svptr = SvGROW (data, length + dataoffset + 1);	965	svptr = SvGROW (data, len + dataoffset + 1);
1395	}	966	}
1396
1397	if (length < 0)
1398	croak ("length must not be negative");
1399		967
1400	{	968	{
1401	dREQ;	969	dREQ;
1402		970
1403	req->type = ix;	971	req->type = ix;
1404	req->fh = newSVsv (fh);	972	req->sv1 = newSVsv (fh);
1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	973	req->int1 = fd;
1406	: IoOFP (sv_2io (fh)));	974	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407	req->offs = offset;
1408	req->size = length;	975	req->size = len;
1409	req->sv1 = SvREFCNT_inc (data);	976	req->sv2 = SvREFCNT_inc (data);
1410	req->ptr1 = (char *)svptr + dataoffset;	977	req->ptr2 = (char *)svptr + dataoffset;
1411	req->stroffset = dataoffset;	978	req->stroffset = dataoffset;
1412		979
1413	if (!SvREADONLY (data))	980	if (!SvREADONLY (data))
1414	{	981	{
1415	SvREADONLY_on (data);	982	SvREADONLY_on (data);
1416	req->flags |= FLAG_SV1_RO_OFF;	983	req->flags |= FLAG_SV2_RO_OFF;
1417	}	984	}
1418		985
1419	REQ_SEND;	986	REQ_SEND;
1420	}	987	}
1421	}	988	}
1422		989
1423	void	990	void
1424	aio_readlink (path,callback=&PL_sv_undef)	991	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1425	SV8 * path
1426	SV * callback
1427	PROTOTYPE: $$;$
1428	PPCODE:	992	PPCODE:
1429	{	993	{
1430	SV *data;	994	SV *data;
1431	dREQ;	995	dREQ;
1432		996
1433	data = newSV (NAME_MAX);
1434	SvPOK_on (data);
1435
1436	req->type = REQ_READLINK;	997	req->type = EIO_READLINK;
1437	req->fh = newSVsv (path);	998	req->sv1 = newSVsv (path);
1438	req->ptr2 = SvPVbyte_nolen (req->fh);	999	req->ptr1 = SvPVbyte_nolen (req->sv1);
1439	req->sv1 = data;
1440	req->ptr1 = SvPVbyte_nolen (data);
1441		1000
1442	REQ_SEND;	1001	REQ_SEND;
1443	}	1002	}
1444		1003
1445	void	1004	void
1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1005	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1447	SV * out_fh
1448	SV * in_fh
1449	UV in_offset
1450	UV length
1451	SV * callback
1452	PROTOTYPE: $$$$;$
1453	PPCODE:	1006	PPCODE:
1454	{	1007	{
		1008	int ifd = s_fileno_croak (in_fh , 0);
		1009	int ofd = s_fileno_croak (out_fh, 1);
1455	dREQ;	1010	dREQ;
1456		1011
1457	req->type = REQ_SENDFILE;	1012	req->type = EIO_SENDFILE;
1458	req->fh = newSVsv (out_fh);	1013	req->sv1 = newSVsv (out_fh);
1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1014	req->int1 = ofd;
1460	req->sv2 = newSVsv (in_fh);	1015	req->sv2 = newSVsv (in_fh);
1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1016	req->int2 = ifd;
1462	req->offs = in_offset;	1017	req->offs = in_offset;
1463	req->size = length;	1018	req->size = length;
1464		1019
1465	REQ_SEND;	1020	REQ_SEND;
1466	}	1021	}
1467		1022
1468	void	1023	void
1469	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1024	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470	SV * fh
1471	UV offset
1472	IV length
1473	SV * callback
1474	PROTOTYPE: $$$;$
1475	PPCODE:	1025	PPCODE:
1476	{	1026	{
		1027	int fd = s_fileno_croak (fh, 0);
1477	dREQ;	1028	dREQ;
1478		1029
1479	req->type = REQ_READAHEAD;	1030	req->type = EIO_READAHEAD;
1480	req->fh = newSVsv (fh);	1031	req->sv1 = newSVsv (fh);
1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1032	req->int1 = fd;
1482	req->offs = offset;	1033	req->offs = offset;
1483	req->size = length;	1034	req->size = length;
1484		1035
1485	REQ_SEND;	1036	REQ_SEND;
1486	}	1037	}
1487		1038
1488	void	1039	void
1489	aio_stat (fh_or_path,callback=&PL_sv_undef)	1040	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490	SV8 * fh_or_path
1491	SV * callback
1492	ALIAS:	1041	ALIAS:
1493	aio_stat = REQ_STAT	1042	aio_stat = EIO_STAT
1494	aio_lstat = REQ_LSTAT	1043	aio_lstat = EIO_LSTAT
		1044	aio_statvfs = EIO_STATVFS
1495	PPCODE:	1045	PPCODE:
1496	{	1046	{
1497	dREQ;	1047	dREQ;
1498		1048
1499	req->ptr2 = malloc (sizeof (Stat_t));	1049	req->sv1 = newSVsv (fh_or_path);
1500	if (!req->ptr2)
1501	{
1502	req_free (req);
1503	croak ("out of memory during aio_stat statdata allocation");
1504	}
1505		1050
1506	req->flags |= FLAG_PTR2_FREE;	1051	if (SvPOK (req->sv1))
1507
1508	if (SvPOK (fh_or_path))
1509	{	1052	{
1510	req->type = ix;	1053	req->type = ix;
1511	req->sv1 = newSVsv (fh_or_path);
1512	req->ptr1 = SvPVbyte_nolen (req->sv1);	1054	req->ptr1 = SvPVbyte_nolen (req->sv1);
1513	}	1055	}
1514	else	1056	else
1515	{	1057	{
1516	req->type = REQ_FSTAT;	1058	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1517	req->fh = newSVsv (fh_or_path);
1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1059	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519	}	1060	}
1520		1061
1521	REQ_SEND;	1062	REQ_SEND;
1522	}	1063	}
1523		1064
1524	void	1065	void
		1066	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1067	PPCODE:
		1068	{
		1069	dREQ;
		1070
		1071	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1072	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1073	req->sv1 = newSVsv (fh_or_path);
		1074
		1075	if (SvPOK (req->sv1))
		1076	{
		1077	req->type = EIO_UTIME;
		1078	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1079	}
		1080	else
		1081	{
		1082	req->type = EIO_FUTIME;
		1083	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1084	}
		1085
		1086	REQ_SEND;
		1087	}
		1088
		1089	void
		1090	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1091	PPCODE:
		1092	{
		1093	dREQ;
		1094
		1095	req->sv1 = newSVsv (fh_or_path);
		1096	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1097
		1098	if (SvPOK (req->sv1))
		1099	{
		1100	req->type = EIO_TRUNCATE;
		1101	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1102	}
		1103	else
		1104	{
		1105	req->type = EIO_FTRUNCATE;
		1106	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1107	}
		1108
		1109	REQ_SEND;
		1110	}
		1111
		1112	void
		1113	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1114	ALIAS:
		1115	aio_chmod = EIO_CHMOD
		1116	aio_mkdir = EIO_MKDIR
		1117	PPCODE:
		1118	{
		1119	dREQ;
		1120
		1121	req->int2 = mode;
		1122	req->sv1 = newSVsv (fh_or_path);
		1123
		1124	if (SvPOK (req->sv1))
		1125	{
		1126	req->type = ix;
		1127	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1128	}
		1129	else
		1130	{
		1131	req->type = EIO_FCHMOD;
		1132	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1133	}
		1134
		1135	REQ_SEND;
		1136	}
		1137
		1138	void
		1139	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	dREQ;
		1143
		1144	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1145	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1146	req->sv1 = newSVsv (fh_or_path);
		1147
		1148	if (SvPOK (req->sv1))
		1149	{
		1150	req->type = EIO_CHOWN;
		1151	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1152	}
		1153	else
		1154	{
		1155	req->type = EIO_FCHOWN;
		1156	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1157	}
		1158
		1159	REQ_SEND;
		1160	}
		1161
		1162	void
		1163	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1164	PPCODE:
		1165	{
		1166	dREQ;
		1167
		1168	req->type = EIO_READDIR;
		1169	req->sv1 = newSVsv (pathname);
		1170	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1171	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1172
		1173	if (flags & EIO_READDIR_DENTS)
		1174	req->int1 |= EIO_READDIR_CUSTOM2;
		1175
		1176	REQ_SEND;
		1177	}
		1178
		1179	void
1525	aio_unlink (pathname,callback=&PL_sv_undef)	1180	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526	SV8 * pathname
1527	SV * callback
1528	ALIAS:	1181	ALIAS:
1529	aio_unlink = REQ_UNLINK	1182	aio_unlink = EIO_UNLINK
1530	aio_rmdir = REQ_RMDIR	1183	aio_rmdir = EIO_RMDIR
1531	aio_readdir = REQ_READDIR	1184	aio_readdir = EIO_READDIR
1532	PPCODE:	1185	PPCODE:
1533	{	1186	{
1534	dREQ;	1187	dREQ;
1535		1188
1536	req->type = ix;	1189	req->type = ix;
…		…
1539		1192
1540	REQ_SEND;	1193	REQ_SEND;
1541	}	1194	}
1542		1195
1543	void	1196	void
1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
1545	SV8 * pathname
1546	UV mode
1547	SV * callback
1548	PPCODE:
1549	{
1550	dREQ;
1551
1552	req->type = REQ_MKDIR;
1553	req->sv1 = newSVsv (pathname);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1555	req->mode = mode;
1556
1557	REQ_SEND;
1558	}
1559
1560	void
1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1197	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1562	SV8 * oldpath
1563	SV8 * newpath
1564	SV * callback
1565	ALIAS:	1198	ALIAS:
1566	aio_link = REQ_LINK	1199	aio_link = EIO_LINK
1567	aio_symlink = REQ_SYMLINK	1200	aio_symlink = EIO_SYMLINK
1568	aio_rename = REQ_RENAME	1201	aio_rename = EIO_RENAME
1569	PPCODE:	1202	PPCODE:
1570	{	1203	{
1571	dREQ;	1204	dREQ;
1572		1205
1573	req->type = ix;	1206	req->type = ix;
1574	req->fh = newSVsv (oldpath);	1207	req->sv1 = newSVsv (oldpath);
1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1576	req->sv1 = newSVsv (newpath);
1577	req->ptr1 = SvPVbyte_nolen (req->sv1);	1208	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1209	req->sv2 = newSVsv (newpath);
		1210	req->ptr2 = SvPVbyte_nolen (req->sv2);
1578		1211
1579	REQ_SEND;	1212	REQ_SEND;
1580	}	1213	}
1581		1214
1582	void	1215	void
1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1216	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	UV mode
1586	UV dev
1587	SV * callback
1588	PPCODE:	1217	PPCODE:
1589	{	1218	{
1590	dREQ;	1219	dREQ;
1591		1220
1592	req->type = REQ_MKNOD;	1221	req->type = EIO_MKNOD;
1593	req->sv1 = newSVsv (pathname);	1222	req->sv1 = newSVsv (pathname);
1594	req->ptr1 = SvPVbyte_nolen (req->sv1);	1223	req->ptr1 = SvPVbyte_nolen (req->sv1);
1595	req->mode = (mode_t)mode;	1224	req->int2 = (mode_t)mode;
1596	req->offs = dev;	1225	req->offs = dev;
1597		1226
1598	REQ_SEND;	1227	REQ_SEND;
1599	}	1228	}
1600		1229
1601	void	1230	void
		1231	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1232	ALIAS:
		1233	aio_mtouch = EIO_MTOUCH
		1234	aio_msync = EIO_MSYNC
		1235	PPCODE:
		1236	{
		1237	STRLEN svlen;
		1238	char *svptr = SvPVbyte (data, svlen);
		1239	UV len = SvUV (length);
		1240
		1241	if (offset < 0)
		1242	offset += svlen;
		1243
		1244	if (offset < 0 || offset > svlen)
		1245	croak ("offset outside of scalar");
		1246
		1247	if (!SvOK (length) || len + offset > svlen)
		1248	len = svlen - offset;
		1249
		1250	{
		1251	dREQ;
		1252
		1253	req->type = ix;
		1254	req->sv2 = SvREFCNT_inc (data);
		1255	req->ptr2 = (char *)svptr + offset;
		1256	req->size = len;
		1257	req->int1 = flags;
		1258
		1259	REQ_SEND;
		1260	}
		1261	}
		1262
		1263	void
		1264	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	STRLEN svlen;
		1268	char *svptr = SvPVbyte (data, svlen);
		1269	UV len = SvUV (length);
		1270
		1271	if (offset < 0)
		1272	offset += svlen;
		1273
		1274	if (offset < 0 || offset > svlen)
		1275	croak ("offset outside of scalar");
		1276
		1277	if (!SvOK (length) || len + offset > svlen)
		1278	len = svlen - offset;
		1279
		1280	{
		1281	dREQ;
		1282
		1283	req->type = EIO_MLOCK;
		1284	req->sv2 = SvREFCNT_inc (data);
		1285	req->ptr2 = (char *)svptr + offset;
		1286	req->size = len;
		1287
		1288	REQ_SEND;
		1289	}
		1290	}
		1291
		1292	void
		1293	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1294	PPCODE:
		1295	{
		1296	dREQ;
		1297
		1298	req->type = EIO_MLOCKALL;
		1299	req->int1 = flags;
		1300
		1301	REQ_SEND;
		1302	}
		1303
		1304	void
1602	aio_busy (delay,callback=&PL_sv_undef)	1305	aio_busy (double delay, SV *callback=&PL_sv_undef)
1603	double delay
1604	SV * callback
1605	PPCODE:	1306	PPCODE:
1606	{	1307	{
1607	dREQ;	1308	dREQ;
1608		1309
1609	req->type = REQ_BUSY;	1310	req->type = EIO_BUSY;
1610	req->int1 = delay < 0. ? 0 : delay;	1311	req->nv1 = delay < 0. ? 0. : delay;
1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612		1312
1613	REQ_SEND;	1313	REQ_SEND;
1614	}	1314	}
1615		1315
1616	void	1316	void
1617	aio_group (callback=&PL_sv_undef)	1317	aio_group (SV *callback=&PL_sv_undef)
1618	SV * callback
1619	PROTOTYPE: ;$
1620	PPCODE:	1318	PPCODE:
1621	{	1319	{
1622	dREQ;	1320	dREQ;
1623		1321
1624	req->type = REQ_GROUP;	1322	req->type = EIO_GROUP;
1625		1323
1626	req_send (req);	1324	req_submit (req);
1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1325	XPUSHs (req_sv (req, aio_grp_stash));
1628	}	1326	}
1629		1327
1630	void	1328	void
1631	aio_nop (callback=&PL_sv_undef)	1329	aio_nop (SV *callback=&PL_sv_undef)
1632	SV * callback	1330	ALIAS:
		1331	aio_nop = EIO_NOP
		1332	aio_sync = EIO_SYNC
1633	PPCODE:	1333	PPCODE:
1634	{	1334	{
1635	dREQ;	1335	dREQ;
1636		1336
1637	req->type = REQ_NOP;	1337	req->type = ix;
1638		1338
1639	REQ_SEND;	1339	REQ_SEND;
1640	}	1340	}
1641		1341
1642	int	1342	int
1643	aioreq_pri (int pri = 0)	1343	aioreq_pri (int pri = 0)
1644	PROTOTYPE: ;$
1645	CODE:	1344	CODE:
1646	RETVAL = next_pri - PRI_BIAS;	1345	RETVAL = next_pri;
1647	if (items > 0)	1346	if (items > 0)
1648	{	1347	{
1649	if (pri < PRI_MIN) pri = PRI_MIN;	1348	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650	if (pri > PRI_MAX) pri = PRI_MAX;	1349	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651	next_pri = pri + PRI_BIAS;	1350	next_pri = pri;
1652	}	1351	}
1653	OUTPUT:	1352	OUTPUT:
1654	RETVAL	1353	RETVAL
1655		1354
1656	void	1355	void
1657	aioreq_nice (int nice = 0)	1356	aioreq_nice (int nice = 0)
1658	CODE:	1357	CODE:
1659	nice = next_pri - nice;	1358	nice = next_pri - nice;
1660	if (nice < PRI_MIN) nice = PRI_MIN;	1359	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661	if (nice > PRI_MAX) nice = PRI_MAX;	1360	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662	next_pri = nice + PRI_BIAS;	1361	next_pri = nice;
1663		1362
1664	void	1363	void
1665	flush ()	1364	flush ()
1666	PROTOTYPE:
1667	CODE:	1365	CODE:
1668	while (nreqs)	1366	while (eio_nreqs ())
1669	{	1367	{
1670	poll_wait ();	1368	poll_wait ();
1671	poll_cb ();	1369	poll_cb ();
1672	}	1370	}
1673		1371
1674	int	1372	int
1675	poll()	1373	poll ()
1676	PROTOTYPE:
1677	CODE:	1374	CODE:
1678	poll_wait ();	1375	poll_wait ();
1679	RETVAL = poll_cb ();	1376	RETVAL = poll_cb ();
1680	OUTPUT:	1377	OUTPUT:
1681	RETVAL	1378	RETVAL
1682		1379
1683	int	1380	int
1684	poll_fileno()	1381	poll_fileno ()
1685	PROTOTYPE:
1686	CODE:	1382	CODE:
1687	RETVAL = respipe [0];	1383	RETVAL = s_epipe_fd (&respipe);
1688	OUTPUT:	1384	OUTPUT:
1689	RETVAL	1385	RETVAL
1690		1386
1691	int	1387	int
1692	poll_cb(...)	1388	poll_cb (...)
1693	PROTOTYPE:	1389	PROTOTYPE:
1694	CODE:	1390	CODE:
1695	RETVAL = poll_cb ();	1391	RETVAL = poll_cb ();
1696	OUTPUT:	1392	OUTPUT:
1697	RETVAL	1393	RETVAL
1698		1394
1699	void	1395	void
1700	poll_wait()	1396	poll_wait ()
1701	PROTOTYPE:
1702	CODE:	1397	CODE:
1703	poll_wait ();	1398	poll_wait ();
1704		1399
1705	void
1706	setsig (int signum = SIGIO)
1707	PROTOTYPE: ;$
1708	CODE:
1709	{
1710	if (block_sig_level)
1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713	LOCK (reslock);
1714	main_tid = pthread_self ();
1715	main_sig = signum;
1716	UNLOCK (reslock);
1717
1718	if (main_sig && npending)
1719	pthread_kill (main_tid, main_sig);
1720	}
1721
1722	void
1723	aio_block (SV *cb)
1724	PROTOTYPE: &
1725	PPCODE:
1726	{
1727	int count;
1728
1729	block_sig ();
1730	PUSHMARK (SP);
1731	PUTBACK;
1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733	SPAGAIN;
1734	unblock_sig ();
1735
1736	if (SvTRUE (ERRSV))
1737	croak (0);
1738
1739	XSRETURN (count);
1740	}
1741
1742	int	1400	int
1743	nreqs()	1401	nreqs ()
1744	PROTOTYPE:
1745	CODE:	1402	CODE:
1746	RETVAL = nreqs;	1403	RETVAL = eio_nreqs ();
1747	OUTPUT:	1404	OUTPUT:
1748	RETVAL	1405	RETVAL
1749		1406
1750	int	1407	int
1751	nready()	1408	nready ()
1752	PROTOTYPE:
1753	CODE:	1409	CODE:
1754	RETVAL = get_nready ();	1410	RETVAL = eio_nready ();
1755	OUTPUT:	1411	OUTPUT:
1756	RETVAL	1412	RETVAL
1757		1413
1758	int	1414	int
1759	npending()	1415	npending ()
1760	PROTOTYPE:
1761	CODE:	1416	CODE:
1762	RETVAL = get_npending ();	1417	RETVAL = eio_npending ();
1763	OUTPUT:	1418	OUTPUT:
1764	RETVAL	1419	RETVAL
1765		1420
1766	int	1421	int
1767	nthreads()	1422	nthreads ()
1768	PROTOTYPE:
1769	CODE:	1423	CODE:
1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1424	RETVAL = eio_nthreads ();
1771	RETVAL = started;
1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773	OUTPUT:	1425	OUTPUT:
1774	RETVAL	1426	RETVAL
1775		1427
		1428	int
		1429	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1430	CODE:
		1431	RETVAL = posix_fadvise (fh, offset, length, advice);
		1432	OUTPUT:
		1433	RETVAL
		1434
		1435	ssize_t
		1436	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1437	CODE:
		1438	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1439	OUTPUT:
		1440	RETVAL
		1441
		1442	void
		1443	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1444	PPCODE:
		1445	sv_unmagic (scalar, MMAP_MAGIC);
		1446	{
		1447	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1448	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1449	if (addr == (void *)-1)
		1450	XSRETURN_NO;
		1451
		1452	sv_force_normal (scalar);
		1453
		1454	/* we store the length in mg_obj, as namlen is I32 :/ */
		1455	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1456	->mg_obj = (SV *)length;
		1457
		1458	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1459
		1460	if (!(prot & PROT_WRITE))
		1461	SvREADONLY_on (scalar);
		1462
		1463	if (SvLEN (scalar))
		1464	Safefree (SvPVX (scalar));
		1465
		1466	SvPVX (scalar) = (char *)addr;
		1467	SvCUR_set (scalar, length);
		1468	SvLEN_set (scalar, 0);
		1469	SvPOK_only (scalar);
		1470
		1471	XSRETURN_YES;
		1472	}
		1473
		1474	void
		1475	munmap (SV *scalar)
		1476	CODE:
		1477	sv_unmagic (scalar, MMAP_MAGIC);
		1478
		1479	int
		1480	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1481	ALIAS:
		1482	mprotect = 1
		1483	CODE:
		1484	{
		1485	STRLEN svlen;
		1486	void *addr = SvPVbyte (scalar, svlen);
		1487	size_t len = SvUV (length);
		1488
		1489	if (offset < 0)
		1490	offset += svlen;
		1491
		1492	if (offset < 0 || offset > svlen)
		1493	croak ("offset outside of scalar");
		1494
		1495	if (!SvOK (length) || len + offset > svlen)
		1496	len = svlen - offset;
		1497
		1498	addr = (void *)(((intptr_t)addr) + offset);
		1499	eio_page_align (&addr, &len);
		1500
		1501	switch (ix)
		1502	{
		1503	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1504	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1505	}
		1506	}
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1512	CODE:
		1513	{
		1514	STRLEN svlen;
		1515	void *addr = SvPVbyte (scalar, svlen);
		1516	size_t len = SvUV (length);
		1517
		1518	if (offset < 0)
		1519	offset += svlen;
		1520
		1521	if (offset < 0 || offset > svlen)
		1522	croak ("offset outside of scalar");
		1523
		1524	if (!SvOK (length) || len + offset > svlen)
		1525	len = svlen - offset;
		1526
		1527	addr = (void *)(((intptr_t)addr) + offset);
		1528	eio_page_align (&addr, &len);
		1529	#if _POSIX_MEMLOCK
		1530	RETVAL = munlock (addr, len);
		1531	#else
		1532	RETVAL = ((errno = ENOSYS), -1);
		1533	#endif
		1534	}
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
		1539	munlockall ()
		1540	CODE:
		1541	#if _POSIX_MEMLOCK
		1542	munlockall ();
		1543	#else
		1544	RETVAL = -1;
		1545	errno = ENOSYS;
		1546	#endif
		1547	OUTPUT:
		1548	RETVAL
		1549
		1550	void _on_next_submit (SV *cb)
		1551	CODE:
		1552	SvREFCNT_dec (on_next_submit);
		1553	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1554
1776	PROTOTYPES: DISABLE	1555	PROTOTYPES: DISABLE
1777		1556
1778	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1557	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779		1558
1780	void	1559	void
1781	cancel (aio_req_ornot req)	1560	cancel (aio_req_ornot req)
1782	CODE:	1561	CODE:
1783	req_cancel (req);	1562	eio_cancel (req);
1784		1563
1785	void	1564	void
1786	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1565	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787	CODE:	1566	PPCODE:
		1567	{
		1568	if (GIMME_V != G_VOID)
		1569	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1570
		1571	if (items > 1)
		1572	{
		1573	SV *cb_cv =get_cb (callback);
		1574
1788	SvREFCNT_dec (req->callback);	1575	SvREFCNT_dec (req->callback);
1789	req->callback = newSVsv (callback);	1576	req->callback = SvREFCNT_inc (cb_cv);
		1577	}
		1578	}
1790		1579
1791	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1580	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792		1581
1793	void	1582	void
1794	add (aio_req grp, ...)	1583	add (aio_req grp, ...)
1795	PPCODE:	1584	PPCODE:
1796	{	1585	{
1797	int i;	1586	int i;
1798	aio_req req;
1799
1800	if (main_sig && !block_sig_level)
1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802		1587
1803	if (grp->int1 == 2)	1588	if (grp->int1 == 2)
1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1589	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805		1590
1806	for (i = 1; i < items; ++i )	1591	for (i = 1; i < items; ++i )
1807	{	1592	{
		1593	aio_req req;
		1594
1808	if (GIMME_V != G_VOID)	1595	if (GIMME_V != G_VOID)
1809	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1596	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810		1597
1811	req = SvAIO_REQ (ST (i));	1598	req = SvAIO_REQ (ST (i));
1812		1599
1813	if (req)	1600	if (req)
1814	{	1601	eio_grp_add (grp, req);
1815	++grp->size;
1816	req->grp = grp;
1817
1818	req->grp_prev = 0;
1819	req->grp_next = grp->grp_first;
1820
1821	if (grp->grp_first)
1822	grp->grp_first->grp_prev = req;
1823
1824	grp->grp_first = req;
1825	}
1826	}	1602	}
1827	}	1603	}
1828		1604
1829	void	1605	void
1830	cancel_subs (aio_req_ornot req)	1606	cancel_subs (aio_req_ornot req)
…		…
1839	AV *av;	1615	AV *av;
1840		1616
1841	grp->errorno = errno;	1617	grp->errorno = errno;
1842		1618
1843	av = newAV ();	1619	av = newAV ();
		1620	av_extend (av, items - 1);
1844		1621
1845	for (i = 1; i < items; ++i )	1622	for (i = 1; i < items; ++i )
1846	av_push (av, newSVsv (ST (i)));	1623	av_push (av, newSVsv (ST (i)));
1847		1624
1848	SvREFCNT_dec (grp->sv1);	1625	SvREFCNT_dec (grp->sv1);
…		…
1855	grp->errorno = errorno;	1632	grp->errorno = errorno;
1856		1633
1857	void	1634	void
1858	limit (aio_req grp, int limit)	1635	limit (aio_req grp, int limit)
1859	CODE:	1636	CODE:
1860	grp->int2 = limit;	1637	eio_grp_limit (grp, limit);
1861	aio_grp_feed (grp);
1862		1638
1863	void	1639	void
1864	feed (aio_req grp, SV *callback=&PL_sv_undef)	1640	feed (aio_req grp, SV *callback=&PL_sv_undef)
1865	CODE:	1641	CODE:
1866	{	1642	{
1867	SvREFCNT_dec (grp->sv2);	1643	SvREFCNT_dec (grp->sv2);
1868	grp->sv2 = newSVsv (callback);	1644	grp->sv2 = newSVsv (callback);
		1645	grp->feed = aio_grp_feed;
1869		1646
1870	if (grp->int2 <= 0)	1647	if (grp->int2 <= 0)
1871	grp->int2 = 2;	1648	grp->int2 = 2;
1872		1649
1873	aio_grp_feed (grp);	1650	eio_grp_limit (grp, grp->int2);
1874	}	1651	}
1875		1652

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