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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC vs.
Revision 1.179 by root, Fri Jan 7 21:47:15 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
27	#include <limits.h>	17	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	18	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	19	#include <sched.h>
32		20
33	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>	22	# include <sys/mman.h>
36	# elif __freebsd	23	#endif
37	# 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
38	# include <sys/uio.h>	68	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# 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
43	# else	216	# else
44	# error sendfile support requested but not available	217	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	218	# endif
46	#endif	219	#endif
47		220	#ifndef MAP_HUGETLB
48	/* number of seconds after which idle threads exit */	221	# define MAP_HUGETLB 0
49	#define IDLE_TIMEOUT 10
50
51	/* used for struct dirent, AIX doesn't provide it */
52	#ifndef NAME_MAX
53	# define NAME_MAX 4096
54	#endif
55
56	#ifndef PTHREAD_STACK_MIN
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	222	#endif
		223	#ifndef MAP_LOCKED
		224	# define MAP_LOCKED 0
79	#endif	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
80		235
81	/* buffer size for various temporary buffers */	236	#ifndef PAGESIZE
82	#define AIO_BUFSIZE 65536	237	# define PAGESIZE sysconf (_SC_PAGESIZE)
		238	#endif
83		239
84	#define dBUF \	240	static int req_invoke (eio_req *req);
85	char *aio_buf; \	241	#define EIO_FINISH(req) req_invoke (req)
86	LOCK (wrklock); \	242	static void req_destroy (eio_req *grp);
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	243	#define EIO_DESTROY(req) req_destroy (req)
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	typedef SV SV8; /* byte-sv, used for argument-checking */
93		244
94	enum {	245	enum {
95	REQ_QUIT,	246	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
96	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
98	REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100	REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,
106	};	247	};
107		248
108	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"
110		250
111	typedef struct aio_cb
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;
116	SV *sv1, *sv2;
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;
123	int type;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127
128	unsigned char flags;
129	unsigned char pri;
130
131	SV *self; /* the perl counterpart of this request, if any */
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
133	} aio_cb;
134
135	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};
140
141	typedef aio_cb *aio_req;	251	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
143		253
144	enum {	254	static SV *on_next_submit;
145	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	256	static int max_outstanding;
147		257
148	DEFAULT_PRI = 0,	258	static s_epipe respipe;
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152		259
153	#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155	static unsigned int max_poll_time = 0;
156	static unsigned int max_poll_reqs = 0;
157
158	/* calculcate time difference in ~1/AIO_TICKS of a second */
159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181	typedef struct worker {
182	/* locked by wrklock */
183	struct worker *prev, *next;
184
185	pthread_t tid;
186
187	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */
189	void *dbuf;
190	DIR *dirp;
191	} worker;
192
193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195	static void worker_clear (worker *wrk)
196	{
197	if (wrk->dirp)
198	{
199	closedir (wrk->dirp);
200	wrk->dirp = 0;
201	}
202
203	if (wrk->dbuf)
204	{
205	free (wrk->dbuf);
206	wrk->dbuf = 0;
207	}
208	}
209
210	static void worker_free (worker *wrk)
211	{
212	wrk->next->prev = wrk->prev;
213	wrk->prev->next = wrk->next;
214
215	free (wrk);
216	}
217
218	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];
222
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227	#if WORDACCESS_UNSAFE
228
229	static unsigned int get_nready ()
230	{
231	unsigned int retval;
232
233	LOCK (reqlock);
234	retval = nready;
235	UNLOCK (reqlock);
236
237	return retval;
238	}
239
240	static unsigned int get_npending ()
241	{
242	unsigned int retval;
243
244	LOCK (reslock);
245	retval = npending;
246	UNLOCK (reslock);
247
248	return retval;
249	}
250
251	static unsigned int get_nthreads ()
252	{
253	unsigned int retval;
254
255	LOCK (wrklock);
256	retval = started;
257	UNLOCK (wrklock);
258
259	return retval;
260	}
261
262	#else
263
264	# define get_nready() nready
265	# define get_npending() npending
266	# define get_nthreads() started
267
268	#endif
269
270	/*
271	* a somewhat faster data structure might be nice, but
272	* with 8 priorities this actually needs <20 insns
273	* per shift, the most expensive operation.
274	*/
275	typedef struct {
276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277	int size;
278	} reqq;
279
280	static reqq req_queue;
281	static reqq res_queue;
282
283	int reqq_push (reqq *q, aio_req req)
284	{
285	int pri = req->pri;
286	req->next = 0;
287
288	if (q->qe[pri])
289	{
290	q->qe[pri]->next = req;
291	q->qe[pri] = req;
292	}
293	else
294	q->qe[pri] = q->qs[pri] = req;
295
296	return q->size++;
297	}
298
299	aio_req reqq_shift (reqq *q)
300	{
301	int pri;
302
303	if (!q->size)
304	return 0;
305
306	--q->size;
307
308	for (pri = NUM_PRI; pri--; )
309	{
310	aio_req req = q->qs[pri];
311
312	if (req)
313	{
314	if (!(q->qs[pri] = req->next))
315	q->qe[pri] = 0;
316
317	return req;
318	}
319	}
320
321	abort ();
322	}
323
324	static int poll_cb ();
325	static void req_invoke (aio_req req);
326	static void req_free (aio_req req);	260	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	261	static void req_cancel (aio_req req);
328		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
329	/* must be called at most once */	275	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
331	{	277	{
332	if (!req->self)	278	if (!req->self)
333	{	279	{
334	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
335	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336	}	282	}
337		283
338	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339	}	285	}
340		286
341	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
342	{	288	{
343	MAGIC *mg;	289	MAGIC *mg;
344		290
345	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")))
346	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
347		296
348	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349		298
350	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	300	}
352		301
353	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
354	{	303	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	304	if (grp->sv2 && SvOK (grp->sv2))
356	{	305	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	306	dSP;
362		307
363	ENTER;	308	ENTER;
364	SAVETMPS;	309	SAVETMPS;
365	PUSHMARK (SP);	310	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	311	XPUSHs (req_sv (grp, aio_grp_stash));
367	PUTBACK;	312	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	314	SPAGAIN;
370	FREETMPS;	315	FREETMPS;
371	LEAVE;	316	LEAVE;
372	}
373
374	/* stop if no progress has been made */
375	if (old_len == grp->size)
376	{
377	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;
379	break;
380	}
381	}	317	}
382	}	318	}
383		319
384	static void aio_grp_dec (aio_req grp)	320	static void req_submit (eio_req *req)
385	{	321	{
386	--grp->size;	322	eio_submit (req);
387		323
388	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	325	{
394	req_invoke (grp);	326	dSP;
395	req_free (grp);	327	SV *cb = sv_2mortal (on_next_submit);
		328
		329	on_next_submit = 0;
		330
		331	PUSHMARK (SP);
		332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
396	}	334	}
397	}	335	}
398		336
399	static void req_invoke (aio_req req)	337	static int req_invoke (eio_req *req)
400	{	338	{
401	dSP;
402
403	if (req->flags & FLAG_SV1_RO_OFF)	339	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	340	SvREADONLY_off (req->sv2);
405		341
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	342	if (!EIO_CANCELLED (req) && req->callback)
407	{	343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
408	ENTER;	348	ENTER;
409	SAVETMPS;	349	SAVETMPS;
410	PUSHMARK (SP);	350	PUSHMARK (SP);
411	EXTEND (SP, 1);	351	EXTEND (SP, 1);
412		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
413	switch (req->type)	366	switch (req->type)
414	{	367	{
415	case REQ_READDIR:	368	case EIO_READDIR:
416	{	369	{
417	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
418		371
419	if (req->result >= 0)	372	if (req->result >= 0)
420	{	373	{
421	int i;	374	int i;
422	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423	AV *av = newAV ();	377	AV *av = newAV ();
424		378
425	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
426		380
427	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
428	{	382	{
429	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430		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
431	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);
432	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
433	}	417	}
434		418
435	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
436	}	420	}
437		421
438	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))));
439	}	426	}
440	break;	427	break;
441		428
442	case REQ_OPEN:	429	case EIO_OPEN:
443	{	430	{
444	/* convert fd to fh */	431	/* convert fd to fh */
445	SV *fh;	432	SV *fh = &PL_sv_undef;
446		433
447	PUSHs (sv_2mortal (newSViv (req->result)));	434	if (req->result >= 0)
448	PUTBACK;	435	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	436	GV *gv = (GV *)sv_newmortal ();
450	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);
451		443
452	fh = POPs;	444	symlen = snprintf (
453	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
454	XPUSHs (fh);	456	PUSHs (fh);
455	}	457	}
456	break;	458	break;
457		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
458	case REQ_GROUP:	490	case EIO_GROUP:
459	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
460		492
461	if (req->sv1)	493	if (req->sv1)
462	{	494	{
463	int i;	495	int i;
…		…
467	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
468	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
469	}	501	}
470	break;	502	break;
471		503
472	case REQ_NOP:	504	case EIO_NOP:
473	case REQ_BUSY:	505	case EIO_BUSY:
474	break;	506	break;
475		507
476	case REQ_READLINK:	508	case EIO_READLINK:
477	if (req->result > 0)	509	if (req->result > 0)
478	{	510	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
479	SvCUR_set (req->sv1, req->result);
480	*SvEND (req->sv1) = 0;
481	PUSHs (req->sv1);
482	}
483	break;	511	break;
484		512
485	case REQ_STAT:	513	case EIO_STAT:
486	case REQ_LSTAT:	514	case EIO_LSTAT:
487	case REQ_FSTAT:	515	case EIO_FSTAT:
488	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
489	PL_laststatval = req->result;	517	PL_laststatval = req->result;
490	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
491	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
492	break;	520	break;
493		521
494	case REQ_READ:	522	case EIO_READ:
		523	{
495	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));
496	*SvEND (req->sv1) = 0;	525	*SvEND (req->sv2) = 0;
497	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
498	break;	530	break;
499		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
500	default:	537	default:
501	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
502	break;	539	break;
503	}	540	}
504		541
505	errno = req->errorno;	542	errno = req->errorno;
506		543
507	PUTBACK;	544	PUTBACK;
508	call_sv (req->callback, G_VOID | G_EVAL);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
509	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;
510		552
511	FREETMPS;	553	FREETMPS;
512	LEAVE;	554	LEAVE;
		555
		556	PUTBACK;
513	}	557	}
514		558
515	if (req->grp)	559	return !!SvTRUE (ERRSV);
516	{
517	aio_req grp = req->grp;
518
519	/* unlink request */
520	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
521	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
522
523	if (grp->grp_first == req)
524	grp->grp_first = req->grp_next;
525
526	aio_grp_dec (grp);
527	}
528
529	if (SvTRUE (ERRSV))
530	{
531	req_free (req);
532	croak (0);
533	}
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	sigset_t fullsigset, oldsigset;
581	pthread_attr_t attr;
582
583	worker *wrk = calloc (1, sizeof (worker));
584
585	if (!wrk)
586	croak ("unable to allocate worker thread data");
587
588	pthread_attr_init (&attr);
589	pthread_attr_setstacksize (&attr, STACKSIZE);
590	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
591	#ifdef PTHREAD_SCOPE_PROCESS
592	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
593	#endif
594
595	sigfillset (&fullsigset);
596
597	LOCK (wrklock);
598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
599
600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
601	{
602	wrk->prev = &wrk_first;
603	wrk->next = wrk_first.next;
604	wrk_first.next->prev = wrk;
605	wrk_first.next = wrk;
606	++started;
607	}
608	else
609	free (wrk);
610
611	sigprocmask (SIG_SETMASK, &oldsigset, 0);
612	UNLOCK (wrklock);
613	}
614
615	static void maybe_start_thread ()
616	{
617	if (get_nthreads () >= wanted)
618	return;
619
620	/* todo: maybe use idle here, but might be less exact */
621	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
622	return;
623
624	start_thread ();
625	}
626
627	static void req_send (aio_req req)
628	{
629	++nreqs;
630
631	LOCK (reqlock);
632	++nready;
633	reqq_push (&req_queue, req);
634	pthread_cond_signal (&reqwait);
635	UNLOCK (reqlock);
636
637	maybe_start_thread ();
638	}
639
640	static void end_thread (void)
641	{
642	aio_req req;
643
644	Newz (0, req, 1, aio_cb);
645
646	req->type = REQ_QUIT;
647	req->pri = PRI_MAX + PRI_BIAS;
648
649	LOCK (reqlock);
650	reqq_push (&req_queue, req);
651	pthread_cond_signal (&reqwait);
652	UNLOCK (reqlock);
653
654	LOCK (wrklock);
655	--started;
656	UNLOCK (wrklock);
657	}
658
659	static void set_max_idle (int nthreads)
660	{
661	if (WORDACCESS_UNSAFE) LOCK (reqlock);
662	max_idle = nthreads <= 0 ? 1 : nthreads;
663	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
664	}
665
666	static void min_parallel (int nthreads)
667	{
668	if (wanted < nthreads)
669	wanted = nthreads;
670	}
671
672	static void max_parallel (int nthreads)
673	{
674	if (wanted > nthreads)
675	wanted = nthreads;
676
677	while (started > wanted)
678	end_thread ();
679	}
680
681	static void poll_wait ()	597	static void poll_wait (void)
682	{	598	{
683	fd_set rfd;
684
685	while (nreqs)	599	while (eio_nreqs ())
686	{	600	{
687	int size;	601	int size;
688	if (WORDACCESS_UNSAFE) LOCK (reslock);	602
		603	X_LOCK (reslock);
689	size = res_queue.size;	604	size = res_queue.size;
690	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	605	X_UNLOCK (reslock);
691		606
692	if (size)	607	if (size)
693	return;	608	return;
694		609
695	maybe_start_thread ();	610	etp_maybe_start_thread ();
696		611
697	FD_ZERO(&rfd);	612	s_epipe_wait (&respipe);
698	FD_SET(respipe [0], &rfd);
699
700	select (respipe [0] + 1, &rfd, 0, 0, 0);
701	}	613	}
702	}	614	}
703		615
704	static int poll_cb ()	616	static int poll_cb (void)
705	{	617	{
706	dSP;
707	int count = 0;
708	int maxreqs = max_poll_reqs;
709	int do_croak = 0;
710	struct timeval tv_start, tv_now;
711	aio_req req;
712
713	if (max_poll_time)
714	gettimeofday (&tv_start, 0);
715
716	for (;;)	618	for (;;)
717	{	619	{
718	for (;;)	620	int res = eio_poll ();
719	{
720	maybe_start_thread ();
721		621
722	LOCK (reslock);	622	if (res > 0)
723	req = reqq_shift (&res_queue);
724
725	if (req)
726	{
727	--npending;
728
729	if (!res_queue.size)
730	{
731	/* read any signals sent by the worker threads */
732	char buf [32];
733	while (read (respipe [0], buf, 32) == 32)
734	;
735	}
736	}
737
738	UNLOCK (reslock);
739
740	if (!req)
741	break;
742
743	--nreqs;
744
745	if (req->type == REQ_GROUP && req->size)
746	{
747	req->int1 = 1; /* mark request as delayed */
748	continue;
749	}
750	else
751	{
752	req_invoke (req);
753
754	count++;
755	}
756
757	req_free (req);
758
759	if (maxreqs && !--maxreqs)
760	break;
761
762	if (max_poll_time)
763	{
764	gettimeofday (&tv_now, 0);
765
766	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
767	break;
768	}
769	}
770
771	if (nreqs <= max_outstanding)
772	break;	623	croak (0);
		624
		625	if (!max_outstanding || max_outstanding > eio_nreqs ())
		626	return res;
773		627
774	poll_wait ();	628	poll_wait ();
775
776	++maxreqs;
777	}	629	}
778
779	return count;
780	}	630	}
781		631
782	static void create_pipe ()	632	static void atfork_child (void)
783	{	633	{
784	if (pipe (respipe))	634	create_respipe ();
785	croak ("unable to initialize result pipe");
786
787	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
788	croak ("cannot set result pipe to nonblocking mode");
789
790	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
791	croak ("cannot set result pipe to nonblocking mode");
792	}	635	}
793		636
794	/*****************************************************************************/	637	/*****************************************************************************/
795	/* work around various missing functions */
796		638
797	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
798	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
799	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
800
801	/*
802	* make our pread/pwrite safe against themselves, but not against
803	* normal read/write by using a mutex. slows down execution a lot,
804	* but that's your problem, not mine.
805	*/
806	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
807
808	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
809	{
810	ssize_t res;
811	off_t ooffset;
812
813	LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);
816	res = read (fd, buf, count);
817	lseek (fd, ooffset, SEEK_SET);
818	UNLOCK (preadwritelock);
819
820	return res;
821	}
822
823	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
824	{
825	ssize_t res;
826	off_t ooffset;
827
828	LOCK (preadwritelock);
829	ooffset = lseek (fd, 0, SEEK_CUR);
830	lseek (fd, offset, SEEK_SET);
831	res = write (fd, buf, count);
832	lseek (fd, offset, SEEK_SET);
833	UNLOCK (preadwritelock);
834
835	return res;
836	}
837	#endif
838
839	#if !HAVE_FDATASYNC
840	# define fdatasync fsync
841	#endif
842
843	#if !HAVE_READAHEAD
844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
845
846	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
847	{
848	dBUF;
849
850	while (count > 0)
851	{
852	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
853
854	pread (fd, aio_buf, len, offset);
855	offset += len;
856	count -= len;
857	}
858
859	errno = 0;
860	}
861
862	#endif
863
864	#if !HAVE_READDIR_R
865	# define readdir_r aio_readdir_r
866
867	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
868
869	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
870	{
871	struct dirent *e;
872	int errorno;
873
874	LOCK (readdirlock);
875
876	e = readdir (dirp);
877	errorno = errno;
878
879	if (e)
880	{
881	*res = ent;
882	strcpy (ent->d_name, e->d_name);
883	}
884	else
885	*res = 0;
886
887	UNLOCK (readdirlock);
888
889	errno = errorno;
890	return e ? 0 : -1;
891	}
892	#endif
893
894	/* sendfile always needs emulation */
895	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
896	{
897	ssize_t res;
898
899	if (!count)
900	return 0;
901
902	#if HAVE_SENDFILE
903	# if __linux
904	res = sendfile (ofd, ifd, &offset, count);
905
906	# elif __freebsd
907	/*
908	* Of course, the freebsd sendfile is a dire hack with no thoughts
909	* wasted on making it similar to other I/O functions.
910	*/
911	{
912	off_t sbytes;
913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
914
915	if (res < 0 && sbytes)
916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
917	res = sbytes;
918	}
919
920	# elif __hpux
921	res = sendfile (ofd, ifd, offset, count, 0, 0);
922
923	# elif __solaris
924	{
925	struct sendfilevec vec;
926	size_t sbytes;
927
928	vec.sfv_fd = ifd;
929	vec.sfv_flag = 0;
930	vec.sfv_off = offset;
931	vec.sfv_len = count;
932
933	res = sendfilev (ofd, &vec, 1, &sbytes);
934
935	if (res < 0 && sbytes)
936	res = sbytes;
937	}
938
939	# endif	642	#endif
940	#else
941	res = -1;
942	errno = ENOSYS;
943	#endif
944		643
945	if (res < 0	644	#if !_POSIX_MEMORY_PROTECTION
946	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	645	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
947	#if __solaris	646	# define PROT_NONE 0
948	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	647	# define PROT_WRITE 0
		648	# define MAP_PRIVATE 0
		649	# define MAP_SHARED 0
		650	# define MAP_FIXED 0
949	#endif	651	#endif
950	)
951	)
952	{
953	/* emulate sendfile. this is a major pain in the ass */
954	dBUF;
955		652
956	res = 0;	653	#define MMAP_MAGIC PERL_MAGIC_ext
957		654
958	while (count)	655	static int
959	{	656	mmap_free (pTHX_ SV *sv, MAGIC *mg)
960	ssize_t cnt;	657	{
961		658	int old_errno = errno;
962	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	659	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		660	errno = old_errno;
963		661
964	if (cnt <= 0)	662	mg->mg_obj = 0; /* just in case */
965	{
966	if (cnt && !res) res = -1;
967	break;
968	}
969		663
970	cnt = write (ofd, aio_buf, cnt);	664	SvREADONLY_off (sv);
971		665
972	if (cnt <= 0)	666	if (SvPVX (sv) != mg->mg_ptr)
973	{	667	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
974	if (cnt && !res) res = -1;
975	break;
976	}
977		668
978	offset += cnt;	669	SvCUR_set (sv, 0);
979	res += cnt;	670	SvPVX (sv) = 0;
980	count -= cnt;	671	SvOK_off (sv);
981	}
982	}
983		672
984	return res;	673	return 0;
985	}	674	}
986		675
987	/* read a full directory */	676	static MGVTBL mmap_vtbl = {
988	static void scandir_ (aio_req req, worker *self)	677	0, 0, 0, 0, mmap_free
989	{	678	};
990	DIR *dirp;
991	union
992	{
993	struct dirent d;
994	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
995	} *u;
996	struct dirent *entp;
997	char *name, *names;
998	int memlen = 4096;
999	int memofs = 0;
1000	int res = 0;
1001	int errorno;
1002
1003	LOCK (wrklock);
1004	self->dirp = dirp = opendir (req->ptr1);
1005	self->dbuf = u = malloc (sizeof (*u));
1006	req->flags |= FLAG_PTR2_FREE;
1007	req->ptr2 = names = malloc (memlen);
1008	UNLOCK (wrklock);
1009
1010	if (dirp && u && names)
1011	for (;;)
1012	{
1013	errno = 0;
1014	readdir_r (dirp, &u->d, &entp);
1015
1016	if (!entp)
1017	break;
1018
1019	name = entp->d_name;
1020
1021	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1022	{
1023	int len = strlen (name) + 1;
1024
1025	res++;
1026
1027	while (memofs + len > memlen)
1028	{
1029	memlen *= 2;
1030	LOCK (wrklock);
1031	req->ptr2 = names = realloc (names, memlen);
1032	UNLOCK (wrklock);
1033
1034	if (!names)
1035	break;
1036	}
1037
1038	memcpy (names + memofs, name, len);
1039	memofs += len;
1040	}
1041	}
1042
1043	if (errno)
1044	res = -1;
1045
1046	req->result = res;
1047	}
1048		679
1049	/*****************************************************************************/	680	/*****************************************************************************/
1050		681
1051	static void *aio_proc (void *thr_arg)	682	static SV *
		683	get_cb (SV *cb_sv)
1052	{	684	{
1053	aio_req req;	685	SvGETMAGIC (cb_sv);
1054	struct timespec ts;	686	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1055	worker *self = (worker *)thr_arg;
1056
1057	/* try to distribute timeouts somewhat evenly */
1058	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1059	* (1000000000UL / 1024UL);
1060
1061	for (;;)
1062	{
1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1064
1065	LOCK (reqlock);
1066
1067	for (;;)
1068	{
1069	self->req = req = reqq_shift (&req_queue);
1070
1071	if (req)
1072	break;
1073
1074	++idle;
1075
1076	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1077	== ETIMEDOUT)
1078	{
1079	if (idle > max_idle)
1080	{
1081	--idle;
1082	UNLOCK (reqlock);
1083	LOCK (wrklock);
1084	--started;
1085	UNLOCK (wrklock);
1086	goto quit;
1087	}
1088
1089	/* we are allowed to idle, so do so without any timeout */
1090	pthread_cond_wait (&reqwait, &reqlock);
1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1092	}
1093
1094	--idle;
1095	}
1096
1097	--nready;
1098
1099	UNLOCK (reqlock);
1100
1101	errno = 0; /* strictly unnecessary */
1102
1103	if (!(req->flags & FLAG_CANCELLED))
1104	switch (req->type)
1105	{
1106	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1107	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1108
1109	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1110	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1111
1112	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1113	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1115
1116	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1117	case REQ_CLOSE: req->result = close (req->int1); break;
1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1122	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1123	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1124	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1125
1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
1128	case REQ_READDIR: scandir_ (req, self); break;
1129
1130	case REQ_BUSY:
1131	{
1132	struct timeval tv;
1133
1134	tv.tv_sec = req->int1;
1135	tv.tv_usec = req->int2;
1136
1137	req->result = select (0, 0, 0, 0, &tv);
1138	}
1139
1140	case REQ_GROUP:
1141	case REQ_NOP:
1142	break;
1143
1144	case REQ_QUIT:
1145	goto quit;
1146
1147	default:
1148	req->result = ENOSYS;
1149	break;
1150	}
1151
1152	req->errorno = errno;
1153
1154	LOCK (reslock);
1155
1156	++npending;
1157
1158	if (!reqq_push (&res_queue, req))
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	self->req = 0;
1163	worker_clear (self);
1164
1165	UNLOCK (reslock);
1166	}
1167
1168	quit:
1169	LOCK (wrklock);
1170	worker_free (self);
1171	UNLOCK (wrklock);
1172
1173	return 0;
1174	}
1175
1176	/*****************************************************************************/
1177
1178	static void atfork_prepare (void)
1179	{
1180	LOCK (wrklock);
1181	LOCK (reqlock);
1182	LOCK (reslock);
1183	#if !HAVE_PREADWRITE
1184	LOCK (preadwritelock);
1185	#endif
1186	#if !HAVE_READDIR_R
1187	LOCK (readdirlock);
1188	#endif
1189	}
1190
1191	static void atfork_parent (void)
1192	{
1193	#if !HAVE_READDIR_R
1194	UNLOCK (readdirlock);
1195	#endif
1196	#if !HAVE_PREADWRITE
1197	UNLOCK (preadwritelock);
1198	#endif
1199	UNLOCK (reslock);
1200	UNLOCK (reqlock);
1201	UNLOCK (wrklock);
1202	}
1203
1204	static void atfork_child (void)
1205	{
1206	aio_req prv;
1207
1208	while (prv = reqq_shift (&req_queue))
1209	req_free (prv);
1210
1211	while (prv = reqq_shift (&res_queue))
1212	req_free (prv);
1213
1214	while (wrk_first.next != &wrk_first)
1215	{
1216	worker *wrk = wrk_first.next;
1217
1218	if (wrk->req)
1219	req_free (wrk->req);
1220
1221	worker_clear (wrk);
1222	worker_free (wrk);
1223	}
1224
1225	started = 0;
1226	idle = 0;
1227	nreqs = 0;
1228	nready = 0;
1229	npending = 0;
1230
1231	close (respipe [0]);
1232	close (respipe [1]);
1233	create_pipe ();
1234
1235	atfork_parent ();
1236	}	687	}
1237		688
1238	#define dREQ \	689	#define dREQ \
		690	SV *cb_cv; \
1239	aio_req req; \	691	aio_req req; \
1240	int req_pri = next_pri; \	692	int req_pri = next_pri; \
1241	next_pri = DEFAULT_PRI + PRI_BIAS; \	693	next_pri = EIO_PRI_DEFAULT; \
1242	\	694	\
1243	if (SvOK (callback) && !SvROK (callback)) \	695	cb_cv = get_cb (callback); \
1244	croak ("callback must be undef or of reference type"); \
1245	\	696	\
1246	Newz (0, req, 1, aio_cb); \	697	Newz (0, req, 1, eio_req); \
1247	if (!req) \	698	if (!req) \
1248	croak ("out of memory during aio_req allocation"); \	699	croak ("out of memory during eio_req allocation"); \
1249	\	700	\
1250	req->callback = newSVsv (callback); \	701	req->callback = SvREFCNT_inc (cb_cv); \
1251	req->pri = req_pri	702	req->pri = req_pri
1252		703
1253	#define REQ_SEND \	704	#define REQ_SEND \
		705	PUTBACK; \
1254	req_send (req); \	706	req_submit (req); \
		707	SPAGAIN; \
1255	\	708	\
1256	if (GIMME_V != G_VOID) \	709	if (GIMME_V != G_VOID) \
1257	XPUSHs (req_sv (req, AIO_REQ_KLASS));	710	XPUSHs (req_sv (req, aio_req_stash));
1258		711
1259	MODULE = IO::AIO PACKAGE = IO::AIO	712	MODULE = IO::AIO PACKAGE = IO::AIO
1260		713
1261	PROTOTYPES: ENABLE	714	PROTOTYPES: ENABLE
1262		715
1263	BOOT:	716	BOOT:
1264	{	717	{
		718	static const struct {
		719	const char *name;
		720	IV iv;
		721	} *civ, const_iv[] = {
		722	# define const_niv(name, value) { # name, (IV) value },
		723	# define const_iv(name) { # name, (IV) name },
		724	# define const_eio(name) { # name, (IV) EIO_ ## name },
		725	const_iv (EXDEV)
		726	const_iv (ENOSYS)
		727	const_iv (O_RDONLY)
		728	const_iv (O_WRONLY)
		729	const_iv (O_RDWR)
		730	const_iv (O_CREAT)
		731	const_iv (O_TRUNC)
		732	const_iv (O_EXCL)
		733	const_iv (O_APPEND)
		734	#ifndef _WIN32
		735	const_iv (S_IFIFO)
		736	#endif
		737	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		738	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		739	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		740	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		741	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		742	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		743
		744	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		745	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		746	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		747	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		748	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		749
		750	const_iv (ST_RDONLY)
		751	const_iv (ST_NOSUID)
		752	const_iv (ST_NODEV)
		753	const_iv (ST_NOEXEC)
		754	const_iv (ST_SYNCHRONOUS)
		755	const_iv (ST_MANDLOCK)
		756	const_iv (ST_WRITE)
		757	const_iv (ST_APPEND)
		758	const_iv (ST_IMMUTABLE)
		759	const_iv (ST_NOATIME)
		760	const_iv (ST_NODIRATIME)
		761	const_iv (ST_RELATIME)
		762
		763	const_iv (PROT_NONE)
		764	const_iv (PROT_EXEC)
		765	const_iv (PROT_READ)
		766	const_iv (PROT_WRITE)
		767
		768	/*const_iv (MAP_FIXED)*/
		769	const_iv (MAP_PRIVATE)
		770	const_iv (MAP_SHARED)
		771	const_iv (MAP_ANONYMOUS)
		772
		773	/* linuxish */
		774	const_iv (MAP_HUGETLB)
		775	const_iv (MAP_LOCKED)
		776	const_iv (MAP_NORESERVE)
		777	const_iv (MAP_POPULATE)
		778	const_iv (MAP_NONBLOCK)
		779
		780	const_eio (MCL_FUTURE)
		781	const_eio (MCL_CURRENT)
		782
		783	const_eio (MS_ASYNC)
		784	const_eio (MS_INVALIDATE)
		785	const_eio (MS_SYNC)
		786
		787	const_eio (MT_MODIFY)
		788
		789	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		790	const_eio (SYNC_FILE_RANGE_WRITE)
		791	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		792
		793	const_eio (READDIR_DENTS)
		794	const_eio (READDIR_DIRS_FIRST)
		795	const_eio (READDIR_STAT_ORDER)
		796	const_eio (READDIR_FOUND_UNKNOWN)
		797
		798	const_eio (DT_UNKNOWN)
		799	const_eio (DT_FIFO)
		800	const_eio (DT_CHR)
		801	const_eio (DT_DIR)
		802	const_eio (DT_BLK)
		803	const_eio (DT_REG)
		804	const_eio (DT_LNK)
		805	const_eio (DT_SOCK)
		806	const_eio (DT_WHT)
		807	};
		808
1265	HV *stash = gv_stashpv ("IO::AIO", 1);	809	aio_stash = gv_stashpv ("IO::AIO" , 1);
		810	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		811	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1266		812
1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	813	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	814	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1269	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1270	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1271	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1272	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1273		815
		816	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		817
1274	create_pipe ();	818	create_respipe ();
1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	819
		820	if (eio_init (want_poll, done_poll) < 0)
		821	croak ("IO::AIO: unable to initialise eio library");
		822
		823	/* atfork child called in fifo order, so before eio's handler */
		824	X_THREAD_ATFORK (0, 0, atfork_child);
1276	}	825	}
1277		826
1278	void	827	void
1279	max_poll_reqs (int nreqs)	828	max_poll_reqs (int nreqs)
1280	PROTOTYPE: $	829	PROTOTYPE: $
1281	CODE:	830	CODE:
1282	max_poll_reqs = nreqs;	831	eio_set_max_poll_reqs (nreqs);
1283		832
1284	void	833	void
1285	max_poll_time (double nseconds)	834	max_poll_time (double nseconds)
1286	PROTOTYPE: $	835	PROTOTYPE: $
1287	CODE:	836	CODE:
1288	max_poll_time = nseconds * AIO_TICKS;	837	eio_set_max_poll_time (nseconds);
1289		838
1290	void	839	void
1291	min_parallel (int nthreads)	840	min_parallel (int nthreads)
1292	PROTOTYPE: $	841	PROTOTYPE: $
		842	CODE:
		843	eio_set_min_parallel (nthreads);
1293		844
1294	void	845	void
1295	max_parallel (int nthreads)	846	max_parallel (int nthreads)
1296	PROTOTYPE: $	847	PROTOTYPE: $
		848	CODE:
		849	eio_set_max_parallel (nthreads);
1297		850
1298	void	851	void
1299	max_idle (int nthreads)	852	max_idle (int nthreads)
1300	PROTOTYPE: $	853	PROTOTYPE: $
1301	CODE:	854	CODE:
1302	set_max_idle (nthreads);	855	eio_set_max_idle (nthreads);
1303		856
1304	int	857	void
1305	max_outstanding (int maxreqs)	858	max_outstanding (int maxreqs)
1306	PROTOTYPE: $	859	PROTOTYPE: $
1307	CODE:	860	CODE:
1308	RETVAL = max_outstanding;
1309	max_outstanding = maxreqs;	861	max_outstanding = maxreqs;
1310	OUTPUT:
1311	RETVAL
1312		862
1313	void	863	void
1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	864	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1315	SV8 * pathname
1316	int flags
1317	int mode
1318	SV * callback
1319	PROTOTYPE: $$$;$
1320	PPCODE:	865	PPCODE:
1321	{	866	{
1322	dREQ;	867	dREQ;
1323		868
1324	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
1325	req->sv1 = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
1326	req->ptr1 = SvPVbyte_nolen (req->sv1);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1327	req->int1 = flags;	872	req->int1 = flags;
1328	req->mode = mode;	873	req->int2 = mode;
1329		874
1330	REQ_SEND;	875	REQ_SEND;
1331	}	876	}
1332		877
1333	void	878	void
1334	aio_close (fh,callback=&PL_sv_undef)	879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1335	SV * fh
1336	SV * callback
1337	PROTOTYPE: $;$
1338	ALIAS:	880	ALIAS:
1339	aio_close = REQ_CLOSE
1340	aio_fsync = REQ_FSYNC	881	aio_fsync = EIO_FSYNC
1341	aio_fdatasync = REQ_FDATASYNC	882	aio_fdatasync = EIO_FDATASYNC
1342	PPCODE:	883	PPCODE:
1343	{	884	{
		885	int fd = s_fileno_croak (fh, 0);
1344	dREQ;	886	dREQ;
1345		887
1346	req->type = ix;	888	req->type = ix;
1347	req->fh = newSVsv (fh);	889	req->sv1 = newSVsv (fh);
1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	890	req->int1 = fd;
1349		891
1350	REQ_SEND (req);	892	REQ_SEND (req);
1351	}	893	}
1352		894
1353	void	895	void
		896	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	int fd = s_fileno_croak (fh, 0);
		900	dREQ;
		901
		902	req->type = EIO_SYNC_FILE_RANGE;
		903	req->sv1 = newSVsv (fh);
		904	req->int1 = fd;
		905	req->offs = offset;
		906	req->size = nbytes;
		907	req->int2 = flags;
		908
		909	REQ_SEND (req);
		910	}
		911
		912	void
		913	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		914	PPCODE:
		915	{
		916	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		917	int fd = s_fileno_croak (fh, 0);
		918	dREQ;
		919
		920	if (close_pipe < 0)
		921	{
		922	int pipefd [2];
		923
		924	if (pipe (pipefd) < 0
		925	|| close (pipefd [1]) < 0
		926	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		927	abort (); /*D*/
		928
		929	close_pipe = pipefd [0];
		930	}
		931
		932	req->type = EIO_DUP2;
		933	req->int1 = close_pipe;
		934	req->sv2 = newSVsv (fh);
		935	req->int2 = fd;
		936
		937	REQ_SEND (req);
		938	}
		939
		940	void
1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	941	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1355	SV * fh
1356	UV offset
1357	UV length
1358	SV8 * data
1359	UV dataoffset
1360	SV * callback
1361	ALIAS:	942	ALIAS:
1362	aio_read = REQ_READ	943	aio_read = EIO_READ
1363	aio_write = REQ_WRITE	944	aio_write = EIO_WRITE
1364	PROTOTYPE: $$$$$;$
1365	PPCODE:	945	PPCODE:
1366	{	946	{
1367	STRLEN svlen;	947	STRLEN svlen;
		948	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1368	char *svptr = SvPVbyte (data, svlen);	949	char *svptr = SvPVbyte (data, svlen);
1369		950	UV len = SvUV (length);
1370	SvUPGRADE (data, SVt_PV);
1371	SvPOK_on (data);
1372		951
1373	if (dataoffset < 0)	952	if (dataoffset < 0)
1374	dataoffset += svlen;	953	dataoffset += svlen;
1375		954
1376	if (dataoffset < 0 || dataoffset > svlen)	955	if (dataoffset < 0 || dataoffset > svlen)
1377	croak ("data offset outside of string");	956	croak ("dataoffset outside of data scalar");
1378		957
1379	if (ix == REQ_WRITE)	958	if (ix == EIO_WRITE)
1380	{	959	{
1381	/* write: check length and adjust. */	960	/* write: check length and adjust. */
1382	if (length < 0 || length + dataoffset > svlen)	961	if (!SvOK (length) || len + dataoffset > svlen)
1383	length = svlen - dataoffset;	962	len = svlen - dataoffset;
1384	}	963	}
1385	else	964	else
1386	{	965	{
1387	/* read: grow scalar as necessary */	966	/* read: check type and grow scalar as necessary */
		967	SvUPGRADE (data, SVt_PV);
1388	svptr = SvGROW (data, length + dataoffset);	968	svptr = SvGROW (data, len + dataoffset + 1);
1389	}	969	}
1390
1391	if (length < 0)
1392	croak ("length must not be negative");
1393		970
1394	{	971	{
1395	dREQ;	972	dREQ;
1396		973
1397	req->type = ix;	974	req->type = ix;
1398	req->fh = newSVsv (fh);	975	req->sv1 = newSVsv (fh);
1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	976	req->int1 = fd;
1400	: IoOFP (sv_2io (fh)));	977	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1401	req->offs = offset;
1402	req->size = length;	978	req->size = len;
1403	req->sv1 = SvREFCNT_inc (data);	979	req->sv2 = SvREFCNT_inc (data);
1404	req->ptr1 = (char *)svptr + dataoffset;	980	req->ptr2 = (char *)svptr + dataoffset;
1405	req->stroffset = dataoffset;	981	req->stroffset = dataoffset;
1406		982
1407	if (!SvREADONLY (data))	983	if (!SvREADONLY (data))
1408	{	984	{
1409	SvREADONLY_on (data);	985	SvREADONLY_on (data);
1410	req->flags |= FLAG_SV1_RO_OFF;	986	req->flags |= FLAG_SV2_RO_OFF;
1411	}	987	}
1412		988
1413	REQ_SEND;	989	REQ_SEND;
1414	}	990	}
1415	}	991	}
1416		992
1417	void	993	void
1418	aio_readlink (path,callback=&PL_sv_undef)	994	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1419	SV8 * path
1420	SV * callback
1421	PROTOTYPE: $$;$
1422	PPCODE:	995	PPCODE:
1423	{	996	{
1424	SV *data;	997	SV *data;
1425	dREQ;	998	dREQ;
1426		999
1427	data = newSV (NAME_MAX);
1428	SvPOK_on (data);
1429
1430	req->type = REQ_READLINK;	1000	req->type = EIO_READLINK;
1431	req->fh = newSVsv (path);	1001	req->sv1 = newSVsv (path);
1432	req->ptr2 = SvPVbyte_nolen (req->fh);	1002	req->ptr1 = SvPVbyte_nolen (req->sv1);
1433	req->sv1 = data;
1434	req->ptr1 = SvPVbyte_nolen (data);
1435		1003
1436	REQ_SEND;	1004	REQ_SEND;
1437	}	1005	}
1438		1006
1439	void	1007	void
1440	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1008	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1441	SV * out_fh
1442	SV * in_fh
1443	UV in_offset
1444	UV length
1445	SV * callback
1446	PROTOTYPE: $$$$;$
1447	PPCODE:	1009	PPCODE:
1448	{	1010	{
		1011	int ifd = s_fileno_croak (in_fh , 0);
		1012	int ofd = s_fileno_croak (out_fh, 1);
1449	dREQ;	1013	dREQ;
1450		1014
1451	req->type = REQ_SENDFILE;	1015	req->type = EIO_SENDFILE;
1452	req->fh = newSVsv (out_fh);	1016	req->sv1 = newSVsv (out_fh);
1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1017	req->int1 = ofd;
1454	req->sv2 = newSVsv (in_fh);	1018	req->sv2 = newSVsv (in_fh);
1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1019	req->int2 = ifd;
1456	req->offs = in_offset;	1020	req->offs = in_offset;
1457	req->size = length;	1021	req->size = length;
1458		1022
1459	REQ_SEND;	1023	REQ_SEND;
1460	}	1024	}
1461		1025
1462	void	1026	void
1463	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1027	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1464	SV * fh
1465	UV offset
1466	IV length
1467	SV * callback
1468	PROTOTYPE: $$$;$
1469	PPCODE:	1028	PPCODE:
1470	{	1029	{
		1030	int fd = s_fileno_croak (fh, 0);
1471	dREQ;	1031	dREQ;
1472		1032
1473	req->type = REQ_READAHEAD;	1033	req->type = EIO_READAHEAD;
1474	req->fh = newSVsv (fh);	1034	req->sv1 = newSVsv (fh);
1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1035	req->int1 = fd;
1476	req->offs = offset;	1036	req->offs = offset;
1477	req->size = length;	1037	req->size = length;
1478		1038
1479	REQ_SEND;	1039	REQ_SEND;
1480	}	1040	}
1481		1041
1482	void	1042	void
1483	aio_stat (fh_or_path,callback=&PL_sv_undef)	1043	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1484	SV8 * fh_or_path
1485	SV * callback
1486	ALIAS:	1044	ALIAS:
1487	aio_stat = REQ_STAT	1045	aio_stat = EIO_STAT
1488	aio_lstat = REQ_LSTAT	1046	aio_lstat = EIO_LSTAT
		1047	aio_statvfs = EIO_STATVFS
1489	PPCODE:	1048	PPCODE:
1490	{	1049	{
1491	dREQ;	1050	dREQ;
1492		1051
1493	req->ptr2 = malloc (sizeof (Stat_t));	1052	req->sv1 = newSVsv (fh_or_path);
1494	if (!req->ptr2)
1495	{
1496	req_free (req);
1497	croak ("out of memory during aio_stat statdata allocation");
1498	}
1499		1053
1500	req->flags |= FLAG_PTR2_FREE;	1054	if (SvPOK (req->sv1))
1501
1502	if (SvPOK (fh_or_path))
1503	{	1055	{
1504	req->type = ix;	1056	req->type = ix;
1505	req->sv1 = newSVsv (fh_or_path);
1506	req->ptr1 = SvPVbyte_nolen (req->sv1);	1057	req->ptr1 = SvPVbyte_nolen (req->sv1);
1507	}	1058	}
1508	else	1059	else
1509	{	1060	{
1510	req->type = REQ_FSTAT;	1061	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1511	req->fh = newSVsv (fh_or_path);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1062	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1513	}	1063	}
1514		1064
1515	REQ_SEND;	1065	REQ_SEND;
1516	}	1066	}
1517		1067
1518	void	1068	void
		1069	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1070	PPCODE:
		1071	{
		1072	dREQ;
		1073
		1074	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1075	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1076	req->sv1 = newSVsv (fh_or_path);
		1077
		1078	if (SvPOK (req->sv1))
		1079	{
		1080	req->type = EIO_UTIME;
		1081	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1082	}
		1083	else
		1084	{
		1085	req->type = EIO_FUTIME;
		1086	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1087	}
		1088
		1089	REQ_SEND;
		1090	}
		1091
		1092	void
		1093	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1094	PPCODE:
		1095	{
		1096	dREQ;
		1097
		1098	req->sv1 = newSVsv (fh_or_path);
		1099	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1100
		1101	if (SvPOK (req->sv1))
		1102	{
		1103	req->type = EIO_TRUNCATE;
		1104	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1105	}
		1106	else
		1107	{
		1108	req->type = EIO_FTRUNCATE;
		1109	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1110	}
		1111
		1112	REQ_SEND;
		1113	}
		1114
		1115	void
		1116	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1117	ALIAS:
		1118	aio_chmod = EIO_CHMOD
		1119	aio_mkdir = EIO_MKDIR
		1120	PPCODE:
		1121	{
		1122	dREQ;
		1123
		1124	req->int2 = mode;
		1125	req->sv1 = newSVsv (fh_or_path);
		1126
		1127	if (SvPOK (req->sv1))
		1128	{
		1129	req->type = ix;
		1130	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1131	}
		1132	else
		1133	{
		1134	req->type = EIO_FCHMOD;
		1135	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1136	}
		1137
		1138	REQ_SEND;
		1139	}
		1140
		1141	void
		1142	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1143	PPCODE:
		1144	{
		1145	dREQ;
		1146
		1147	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1148	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1149	req->sv1 = newSVsv (fh_or_path);
		1150
		1151	if (SvPOK (req->sv1))
		1152	{
		1153	req->type = EIO_CHOWN;
		1154	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1155	}
		1156	else
		1157	{
		1158	req->type = EIO_FCHOWN;
		1159	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1160	}
		1161
		1162	REQ_SEND;
		1163	}
		1164
		1165	void
		1166	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1167	PPCODE:
		1168	{
		1169	dREQ;
		1170
		1171	req->type = EIO_READDIR;
		1172	req->sv1 = newSVsv (pathname);
		1173	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1174	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1175
		1176	if (flags & EIO_READDIR_DENTS)
		1177	req->int1 |= EIO_READDIR_CUSTOM2;
		1178
		1179	REQ_SEND;
		1180	}
		1181
		1182	void
1519	aio_unlink (pathname,callback=&PL_sv_undef)	1183	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1520	SV8 * pathname
1521	SV * callback
1522	ALIAS:	1184	ALIAS:
1523	aio_unlink = REQ_UNLINK	1185	aio_unlink = EIO_UNLINK
1524	aio_rmdir = REQ_RMDIR	1186	aio_rmdir = EIO_RMDIR
1525	aio_readdir = REQ_READDIR	1187	aio_readdir = EIO_READDIR
1526	PPCODE:	1188	PPCODE:
1527	{	1189	{
1528	dREQ;	1190	dREQ;
1529		1191
1530	req->type = ix;	1192	req->type = ix;
…		…
1533		1195
1534	REQ_SEND;	1196	REQ_SEND;
1535	}	1197	}
1536		1198
1537	void	1199	void
1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1200	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1539	SV8 * oldpath
1540	SV8 * newpath
1541	SV * callback
1542	ALIAS:	1201	ALIAS:
1543	aio_link = REQ_LINK	1202	aio_link = EIO_LINK
1544	aio_symlink = REQ_SYMLINK	1203	aio_symlink = EIO_SYMLINK
1545	aio_rename = REQ_RENAME	1204	aio_rename = EIO_RENAME
1546	PPCODE:	1205	PPCODE:
1547	{	1206	{
1548	dREQ;	1207	dREQ;
1549		1208
1550	req->type = ix;	1209	req->type = ix;
1551	req->fh = newSVsv (oldpath);	1210	req->sv1 = newSVsv (oldpath);
1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1553	req->sv1 = newSVsv (newpath);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);	1211	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1212	req->sv2 = newSVsv (newpath);
		1213	req->ptr2 = SvPVbyte_nolen (req->sv2);
1555		1214
1556	REQ_SEND;	1215	REQ_SEND;
1557	}	1216	}
1558		1217
1559	void	1218	void
1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1219	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1561	SV8 * pathname
1562	SV * callback
1563	UV mode
1564	UV dev
1565	PPCODE:	1220	PPCODE:
1566	{	1221	{
1567	dREQ;	1222	dREQ;
1568		1223
1569	req->type = REQ_MKNOD;	1224	req->type = EIO_MKNOD;
1570	req->sv1 = newSVsv (pathname);	1225	req->sv1 = newSVsv (pathname);
1571	req->ptr1 = SvPVbyte_nolen (req->sv1);	1226	req->ptr1 = SvPVbyte_nolen (req->sv1);
1572	req->mode = (mode_t)mode;	1227	req->int2 = (mode_t)mode;
1573	req->offs = dev;	1228	req->offs = dev;
1574		1229
1575	REQ_SEND;	1230	REQ_SEND;
1576	}	1231	}
1577		1232
1578	void	1233	void
		1234	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1235	ALIAS:
		1236	aio_mtouch = EIO_MTOUCH
		1237	aio_msync = EIO_MSYNC
		1238	PPCODE:
		1239	{
		1240	STRLEN svlen;
		1241	char *svptr = SvPVbyte (data, svlen);
		1242	UV len = SvUV (length);
		1243
		1244	if (offset < 0)
		1245	offset += svlen;
		1246
		1247	if (offset < 0 || offset > svlen)
		1248	croak ("offset outside of scalar");
		1249
		1250	if (!SvOK (length) || len + offset > svlen)
		1251	len = svlen - offset;
		1252
		1253	{
		1254	dREQ;
		1255
		1256	req->type = ix;
		1257	req->sv2 = SvREFCNT_inc (data);
		1258	req->ptr2 = (char *)svptr + offset;
		1259	req->size = len;
		1260	req->int1 = flags;
		1261
		1262	REQ_SEND;
		1263	}
		1264	}
		1265
		1266	void
		1267	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1268	PPCODE:
		1269	{
		1270	STRLEN svlen;
		1271	char *svptr = SvPVbyte (data, svlen);
		1272	UV len = SvUV (length);
		1273
		1274	if (offset < 0)
		1275	offset += svlen;
		1276
		1277	if (offset < 0 || offset > svlen)
		1278	croak ("offset outside of scalar");
		1279
		1280	if (!SvOK (length) || len + offset > svlen)
		1281	len = svlen - offset;
		1282
		1283	{
		1284	dREQ;
		1285
		1286	req->type = EIO_MLOCK;
		1287	req->sv2 = SvREFCNT_inc (data);
		1288	req->ptr2 = (char *)svptr + offset;
		1289	req->size = len;
		1290
		1291	REQ_SEND;
		1292	}
		1293	}
		1294
		1295	void
		1296	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1297	PPCODE:
		1298	{
		1299	dREQ;
		1300
		1301	req->type = EIO_MLOCKALL;
		1302	req->int1 = flags;
		1303
		1304	REQ_SEND;
		1305	}
		1306
		1307	void
1579	aio_busy (delay,callback=&PL_sv_undef)	1308	aio_busy (double delay, SV *callback=&PL_sv_undef)
1580	double delay
1581	SV * callback
1582	PPCODE:	1309	PPCODE:
1583	{	1310	{
1584	dREQ;	1311	dREQ;
1585		1312
1586	req->type = REQ_BUSY;	1313	req->type = EIO_BUSY;
1587	req->int1 = delay < 0. ? 0 : delay;	1314	req->nv1 = delay < 0. ? 0. : delay;
1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1589		1315
1590	REQ_SEND;	1316	REQ_SEND;
1591	}	1317	}
1592		1318
1593	void	1319	void
1594	aio_group (callback=&PL_sv_undef)	1320	aio_group (SV *callback=&PL_sv_undef)
1595	SV * callback
1596	PROTOTYPE: ;$
1597	PPCODE:	1321	PPCODE:
1598	{	1322	{
1599	dREQ;	1323	dREQ;
1600		1324
1601	req->type = REQ_GROUP;	1325	req->type = EIO_GROUP;
1602		1326
1603	req_send (req);	1327	req_submit (req);
1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1328	XPUSHs (req_sv (req, aio_grp_stash));
1605	}	1329	}
1606		1330
1607	void	1331	void
1608	aio_nop (callback=&PL_sv_undef)	1332	aio_nop (SV *callback=&PL_sv_undef)
1609	SV * callback	1333	ALIAS:
		1334	aio_nop = EIO_NOP
		1335	aio_sync = EIO_SYNC
1610	PPCODE:	1336	PPCODE:
1611	{	1337	{
1612	dREQ;	1338	dREQ;
1613		1339
1614	req->type = REQ_NOP;	1340	req->type = ix;
1615		1341
1616	REQ_SEND;	1342	REQ_SEND;
1617	}	1343	}
1618		1344
1619	int	1345	int
1620	aioreq_pri (int pri = 0)	1346	aioreq_pri (int pri = 0)
1621	PROTOTYPE: ;$
1622	CODE:	1347	CODE:
1623	RETVAL = next_pri - PRI_BIAS;	1348	RETVAL = next_pri;
1624	if (items > 0)	1349	if (items > 0)
1625	{	1350	{
1626	if (pri < PRI_MIN) pri = PRI_MIN;	1351	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1627	if (pri > PRI_MAX) pri = PRI_MAX;	1352	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1628	next_pri = pri + PRI_BIAS;	1353	next_pri = pri;
1629	}	1354	}
1630	OUTPUT:	1355	OUTPUT:
1631	RETVAL	1356	RETVAL
1632		1357
1633	void	1358	void
1634	aioreq_nice (int nice = 0)	1359	aioreq_nice (int nice = 0)
1635	CODE:	1360	CODE:
1636	nice = next_pri - nice;	1361	nice = next_pri - nice;
1637	if (nice < PRI_MIN) nice = PRI_MIN;	1362	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1638	if (nice > PRI_MAX) nice = PRI_MAX;	1363	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1639	next_pri = nice + PRI_BIAS;	1364	next_pri = nice;
1640		1365
1641	void	1366	void
1642	flush ()	1367	flush ()
1643	PROTOTYPE:
1644	CODE:	1368	CODE:
1645	while (nreqs)	1369	while (eio_nreqs ())
1646	{	1370	{
1647	poll_wait ();	1371	poll_wait ();
1648	poll_cb ();	1372	poll_cb ();
1649	}	1373	}
1650		1374
1651	int	1375	int
1652	poll()	1376	poll ()
1653	PROTOTYPE:
1654	CODE:	1377	CODE:
1655	poll_wait ();	1378	poll_wait ();
1656	RETVAL = poll_cb ();	1379	RETVAL = poll_cb ();
1657	OUTPUT:	1380	OUTPUT:
1658	RETVAL	1381	RETVAL
1659		1382
1660	int	1383	int
1661	poll_fileno()	1384	poll_fileno ()
1662	PROTOTYPE:
1663	CODE:	1385	CODE:
1664	RETVAL = respipe [0];	1386	RETVAL = s_epipe_fd (&respipe);
1665	OUTPUT:	1387	OUTPUT:
1666	RETVAL	1388	RETVAL
1667		1389
1668	int	1390	int
1669	poll_cb(...)	1391	poll_cb (...)
1670	PROTOTYPE:	1392	PROTOTYPE:
1671	CODE:	1393	CODE:
1672	RETVAL = poll_cb ();	1394	RETVAL = poll_cb ();
1673	OUTPUT:	1395	OUTPUT:
1674	RETVAL	1396	RETVAL
1675		1397
1676	void	1398	void
1677	poll_wait()	1399	poll_wait ()
1678	PROTOTYPE:
1679	CODE:	1400	CODE:
1680	poll_wait ();	1401	poll_wait ();
1681		1402
1682	int	1403	int
1683	nreqs()	1404	nreqs ()
1684	PROTOTYPE:
1685	CODE:	1405	CODE:
1686	RETVAL = nreqs;	1406	RETVAL = eio_nreqs ();
1687	OUTPUT:	1407	OUTPUT:
1688	RETVAL	1408	RETVAL
1689		1409
1690	int	1410	int
1691	nready()	1411	nready ()
1692	PROTOTYPE:
1693	CODE:	1412	CODE:
1694	RETVAL = get_nready ();	1413	RETVAL = eio_nready ();
1695	OUTPUT:	1414	OUTPUT:
1696	RETVAL	1415	RETVAL
1697		1416
1698	int	1417	int
1699	npending()	1418	npending ()
1700	PROTOTYPE:
1701	CODE:	1419	CODE:
1702	RETVAL = get_npending ();	1420	RETVAL = eio_npending ();
1703	OUTPUT:	1421	OUTPUT:
1704	RETVAL	1422	RETVAL
1705		1423
1706	int	1424	int
1707	nthreads()	1425	nthreads ()
1708	PROTOTYPE:
1709	CODE:	1426	CODE:
1710	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1427	RETVAL = eio_nthreads ();
1711	RETVAL = started;
1712	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1713	OUTPUT:	1428	OUTPUT:
1714	RETVAL	1429	RETVAL
1715		1430
		1431	int
		1432	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1433	CODE:
		1434	RETVAL = posix_fadvise (fh, offset, length, advice);
		1435	OUTPUT:
		1436	RETVAL
		1437
		1438	ssize_t
		1439	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1440	CODE:
		1441	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1442	OUTPUT:
		1443	RETVAL
		1444
		1445	void
		1446	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1447	PPCODE:
		1448	sv_unmagic (scalar, MMAP_MAGIC);
		1449	{
		1450	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1451	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1452	if (addr == (void *)-1)
		1453	XSRETURN_NO;
		1454
		1455	sv_force_normal (scalar);
		1456
		1457	/* we store the length in mg_obj, as namlen is I32 :/ */
		1458	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1459	->mg_obj = (SV *)length;
		1460
		1461	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1462
		1463	if (!(prot & PROT_WRITE))
		1464	SvREADONLY_on (scalar);
		1465
		1466	if (SvLEN (scalar))
		1467	Safefree (SvPVX (scalar));
		1468
		1469	SvPVX (scalar) = (char *)addr;
		1470	SvCUR_set (scalar, length);
		1471	SvLEN_set (scalar, 0);
		1472	SvPOK_only (scalar);
		1473
		1474	XSRETURN_YES;
		1475	}
		1476
		1477	void
		1478	munmap (SV *scalar)
		1479	CODE:
		1480	sv_unmagic (scalar, MMAP_MAGIC);
		1481
		1482	int
		1483	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1484	ALIAS:
		1485	mprotect = 1
		1486	CODE:
		1487	{
		1488	STRLEN svlen;
		1489	void *addr = SvPVbyte (scalar, svlen);
		1490	size_t len = SvUV (length);
		1491
		1492	if (offset < 0)
		1493	offset += svlen;
		1494
		1495	if (offset < 0 || offset > svlen)
		1496	croak ("offset outside of scalar");
		1497
		1498	if (!SvOK (length) || len + offset > svlen)
		1499	len = svlen - offset;
		1500
		1501	addr = (void *)(((intptr_t)addr) + offset);
		1502	eio_page_align (&addr, &len);
		1503
		1504	switch (ix)
		1505	{
		1506	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1507	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1508	}
		1509	}
		1510	OUTPUT:
		1511	RETVAL
		1512
		1513	int
		1514	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1515	CODE:
		1516	{
		1517	STRLEN svlen;
		1518	void *addr = SvPVbyte (scalar, svlen);
		1519	size_t len = SvUV (length);
		1520
		1521	if (offset < 0)
		1522	offset += svlen;
		1523
		1524	if (offset < 0 || offset > svlen)
		1525	croak ("offset outside of scalar");
		1526
		1527	if (!SvOK (length) || len + offset > svlen)
		1528	len = svlen - offset;
		1529
		1530	addr = (void *)(((intptr_t)addr) + offset);
		1531	eio_page_align (&addr, &len);
		1532	#if _POSIX_MEMLOCK_RANGE
		1533	RETVAL = munlock (addr, len);
		1534	#else
		1535	RETVAL = ((errno = ENOSYS), -1);
		1536	#endif
		1537	}
		1538	OUTPUT:
		1539	RETVAL
		1540
		1541	int
		1542	munlockall ()
		1543	CODE:
		1544	#if _POSIX_MEMLOCK
		1545	munlockall ();
		1546	#else
		1547	RETVAL = -1;
		1548	errno = ENOSYS;
		1549	#endif
		1550	OUTPUT:
		1551	RETVAL
		1552
		1553	void _on_next_submit (SV *cb)
		1554	CODE:
		1555	SvREFCNT_dec (on_next_submit);
		1556	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1557
1716	PROTOTYPES: DISABLE	1558	PROTOTYPES: DISABLE
1717		1559
1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1560	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1719		1561
1720	void	1562	void
1721	cancel (aio_req_ornot req)	1563	cancel (aio_req_ornot req)
1722	CODE:	1564	CODE:
1723	req_cancel (req);	1565	eio_cancel (req);
1724		1566
1725	void	1567	void
1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1568	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1727	CODE:	1569	PPCODE:
		1570	{
		1571	if (GIMME_V != G_VOID)
		1572	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1573
		1574	if (items > 1)
		1575	{
		1576	SV *cb_cv =get_cb (callback);
		1577
1728	SvREFCNT_dec (req->callback);	1578	SvREFCNT_dec (req->callback);
1729	req->callback = newSVsv (callback);	1579	req->callback = SvREFCNT_inc (cb_cv);
		1580	}
		1581	}
1730		1582
1731	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1583	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1732		1584
1733	void	1585	void
1734	add (aio_req grp, ...)	1586	add (aio_req grp, ...)
1735	PPCODE:	1587	PPCODE:
1736	{	1588	{
1737	int i;	1589	int i;
1738	aio_req req;
1739		1590
1740	if (grp->int1 == 2)	1591	if (grp->int1 == 2)
1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1592	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1742		1593
1743	for (i = 1; i < items; ++i )	1594	for (i = 1; i < items; ++i )
1744	{	1595	{
		1596	aio_req req;
		1597
1745	if (GIMME_V != G_VOID)	1598	if (GIMME_V != G_VOID)
1746	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1599	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1747		1600
1748	req = SvAIO_REQ (ST (i));	1601	req = SvAIO_REQ (ST (i));
1749		1602
1750	if (req)	1603	if (req)
1751	{	1604	eio_grp_add (grp, req);
1752	++grp->size;
1753	req->grp = grp;
1754
1755	req->grp_prev = 0;
1756	req->grp_next = grp->grp_first;
1757
1758	if (grp->grp_first)
1759	grp->grp_first->grp_prev = req;
1760
1761	grp->grp_first = req;
1762	}
1763	}	1605	}
1764	}	1606	}
1765		1607
1766	void	1608	void
1767	cancel_subs (aio_req_ornot req)	1609	cancel_subs (aio_req_ornot req)
…		…
1776	AV *av;	1618	AV *av;
1777		1619
1778	grp->errorno = errno;	1620	grp->errorno = errno;
1779		1621
1780	av = newAV ();	1622	av = newAV ();
		1623	av_extend (av, items - 1);
1781		1624
1782	for (i = 1; i < items; ++i )	1625	for (i = 1; i < items; ++i )
1783	av_push (av, newSVsv (ST (i)));	1626	av_push (av, newSVsv (ST (i)));
1784		1627
1785	SvREFCNT_dec (grp->sv1);	1628	SvREFCNT_dec (grp->sv1);
…		…
1792	grp->errorno = errorno;	1635	grp->errorno = errorno;
1793		1636
1794	void	1637	void
1795	limit (aio_req grp, int limit)	1638	limit (aio_req grp, int limit)
1796	CODE:	1639	CODE:
1797	grp->int2 = limit;	1640	eio_grp_limit (grp, limit);
1798	aio_grp_feed (grp);
1799		1641
1800	void	1642	void
1801	feed (aio_req grp, SV *callback=&PL_sv_undef)	1643	feed (aio_req grp, SV *callback=&PL_sv_undef)
1802	CODE:	1644	CODE:
1803	{	1645	{
1804	SvREFCNT_dec (grp->sv2);	1646	SvREFCNT_dec (grp->sv2);
1805	grp->sv2 = newSVsv (callback);	1647	grp->sv2 = newSVsv (callback);
		1648	grp->feed = aio_grp_feed;
1806		1649
1807	if (grp->int2 <= 0)	1650	if (grp->int2 <= 0)
1808	grp->int2 = 2;	1651	grp->int2 = 2;
1809		1652
1810	aio_grp_feed (grp);	1653	eio_grp_limit (grp, grp->int2);
1811	}	1654	}
1812		1655

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