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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.176 by root, Thu Dec 2 10:04:47 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
26	#include <limits.h>	17	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	18	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	19	#include <sched.h>
31		20
32	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>	22	# include <sys/mman.h>
35	# elif __freebsd	23	#endif
36	# 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
37	# include <sys/uio.h>	68	# include <sys/time.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# 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
42	# else	216	# else
43	# error sendfile support requested but not available	217	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	218	# endif
45	#endif	219	#endif
46		220	#ifndef MAP_HUGETLB
47	/* used for struct dirent, AIX doesn't provide it */	221	# define MAP_HUGETLB 0
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif	222	#endif
51		223	#ifndef MAP_LOCKED
52	#ifndef PTHREAD_STACK_MIN	224	# define MAP_LOCKED 0
53	/* care for broken platforms, e.g. windows */
54	# define PTHREAD_STACK_MIN 16384
55	#endif	225	#endif
56		226	#ifndef MAP_NORESERVE
57	#if __ia64	227	# define MAP_NORESERVE 0
58	# define STACKSIZE 65536
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
60	# define STACKSIZE PTHREAD_STACK_MIN
61	#else
62	# define STACKSIZE 16384
63	#endif	228	#endif
		229	#ifndef MAP_POPULATE
		230	# define MAP_POPULATE 0
		231	#endif
		232	#ifndef MAP_NONBLOCK
		233	# define MAP_NONBLOCK 0
		234	#endif
64		235
65	/* buffer size for various temporary buffers */	236	#ifndef PAGESIZE
66	#define AIO_BUFSIZE 65536	237	# define PAGESIZE sysconf (_SC_PAGESIZE)
		238	#endif
67		239
68	#define dBUF \	240	static int req_invoke (eio_req *req);
69	char *aio_buf; \	241	#define EIO_FINISH(req) req_invoke (req)
70	LOCK (wrklock); \	242	static void req_destroy (eio_req *grp);
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	243	#define EIO_DESTROY(req) req_destroy (req)
72	UNLOCK (wrklock); \
73	if (!aio_buf) \
74	return -1;
75		244
76	enum {	245	enum {
77	REQ_QUIT,	246	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};	247	};
89		248
90	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
91	#define AIO_GRP_KLASS "IO::AIO::GRP"
92		250
93	typedef struct aio_cb
94	{
95	struct aio_cb *volatile next;
96
97	SV *data, *callback;
98	SV *fh, *fh2;
99	void *dataptr, *data2ptr;
100	Stat_t *statdata;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104
105	STRLEN dataoffset;
106	int type;
107	int fd, fd2;
108	int errorno;
109	mode_t mode; /* open */
110
111	unsigned char flags;
112	unsigned char pri;
113
114	SV *self; /* the perl counterpart of this request, if any */
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
116	} aio_cb;
117
118	enum {
119	FLAG_CANCELLED = 0x01,
120	};
121
122	typedef aio_cb *aio_req;	251	typedef eio_req *aio_req;
123	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
124		253
125	enum {	254	static SV *on_next_submit;
126	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
127	PRI_MAX = 4,	256	static int max_outstanding;
128		257
129	DEFAULT_PRI = 0,	258	static s_epipe respipe;
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133		259
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135
136	static int started, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{
170	closedir (wrk->dirp);
171	wrk->dirp = 0;
172	}
173
174	if (wrk->dbuf)
175	{
176	free (wrk->dbuf);
177	wrk->dbuf = 0;
178	}
179	}
180
181	static void worker_free (worker *wrk)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;
228
229	--q->size;
230
231	for (pri = NUM_PRI; pri--; )
232	{
233	aio_req req = q->qs[pri];
234
235	if (req)
236	{
237	if (!(q->qs[pri] = req->next))
238	q->qe[pri] = 0;
239
240	return req;
241	}
242	}
243
244	abort ();
245	}
246
247	static int poll_cb ();
248	static void req_invoke (aio_req req);
249	static void req_free (aio_req req);	260	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	261	static void req_cancel (aio_req req);
251		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
252	/* must be called at most once */	275	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
254	{	277	{
255	if (!req->self)	278	if (!req->self)
256	{	279	{
257	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
258	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
259	}	282	}
260		283
261	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
262	}	285	}
263		286
264	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
265	{	288	{
266	MAGIC *mg;	289	MAGIC *mg;
267		290
268	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")))
269	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
270		296
271	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
272		298
273	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	300	}
275		301
276	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
277	{	303	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	304	if (grp->sv2 && SvOK (grp->sv2))
279	{	305	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	306	dSP;
285		307
286	ENTER;	308	ENTER;
287	SAVETMPS;	309	SAVETMPS;
288	PUSHMARK (SP);	310	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	311	XPUSHs (req_sv (grp, aio_grp_stash));
290	PUTBACK;	312	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	314	SPAGAIN;
293	FREETMPS;	315	FREETMPS;
294	LEAVE;	316	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	317	}
305	}	318	}
306		319
307	static void aio_grp_dec (aio_req grp)	320	static void req_submit (eio_req *req)
308	{	321	{
309	--grp->length;	322	eio_submit (req);
310		323
311	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	325	{
317	req_invoke (grp);	326	dSP;
318	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);
319	}	334	}
320	}	335	}
321		336
322	static void poll_wait ()	337	static int req_invoke (eio_req *req)
323	{	338	{
324	fd_set rfd;	339	if (req->flags & FLAG_SV2_RO_OFF)
		340	SvREADONLY_off (req->sv2);
325		341
326	while (nreqs)	342	if (!EIO_CANCELLED (req) && req->callback)
327	{	343	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;	344	dSP;
350		345	static SV *sv_result_cache; /* caches the result integer SV */
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	346	SV *sv_result;
352	{
353	errno = req->errorno;
354		347
355	ENTER;	348	ENTER;
356	SAVETMPS;	349	SAVETMPS;
357	PUSHMARK (SP);	350	PUSHMARK (SP);
358	EXTEND (SP, 1);	351	EXTEND (SP, 1);
359		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	}
		359	else
		360	{
		361	sv_result = newSViv (req->result);
		362	SvREADONLY_on (sv_result);
		363	}
		364
360	switch (req->type)	365	switch (req->type)
361	{	366	{
362	case REQ_READDIR:	367	case EIO_READDIR:
363	{	368	{
364	SV *rv = &PL_sv_undef;	369	SV *rv = &PL_sv_undef;
365		370
366	if (req->result >= 0)	371	if (req->result >= 0)
367	{	372	{
368	int i;	373	int i;
369	char *buf = req->data2ptr;	374	char *names = (char *)req->ptr2;
		375	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
370	AV *av = newAV ();	376	AV *av = newAV ();
371		377
372	av_extend (av, req->result - 1);	378	av_extend (av, req->result - 1);
373		379
374	for (i = 0; i < req->result; ++i)	380	for (i = 0; i < req->result; ++i)
375	{	381	{
376	SV *sv = newSVpv (buf, 0);	382	if (req->int1 & EIO_READDIR_DENTS)
		383	{
		384	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
377		385
		386	if (req->int1 & EIO_READDIR_CUSTOM2)
		387	{
		388	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		389	AV *avent = newAV ();
		390
		391	av_extend (avent, 2);
		392
		393	if (!sv_type [ent->type])
		394	{
		395	sv_type [ent->type] = newSViv (ent->type);
		396	SvREADONLY_on (sv_type [ent->type]);
		397	}
		398
		399	av_store (avent, 0, namesv);
		400	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		401	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		402
		403	av_store (av, i, newRV_noinc ((SV *)avent));
		404	}
		405	else
378	av_store (av, i, sv);	406	av_store (av, i, namesv);
		407
		408	++ent;
		409	}
		410	else
		411	{
		412	SV *name = newSVpv (names, 0);
		413	av_store (av, i, name);
379	buf += SvCUR (sv) + 1;	414	names += SvCUR (name) + 1;
		415	}
380	}	416	}
381		417
382	rv = sv_2mortal (newRV_noinc ((SV *)av));	418	rv = sv_2mortal (newRV_noinc ((SV *)av));
383	}	419	}
384		420
385	PUSHs (rv);	421	PUSHs (rv);
		422
		423	if (req->int1 & EIO_READDIR_CUSTOM1)
		424	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
386	}	425	}
387	break;	426	break;
388		427
389	case REQ_OPEN:	428	case EIO_OPEN:
390	{	429	{
391	/* convert fd to fh */	430	/* convert fd to fh */
392	SV *fh;	431	SV *fh = &PL_sv_undef;
393		432
394	PUSHs (sv_2mortal (newSViv (req->result)));	433	if (req->result >= 0)
395	PUTBACK;	434	{
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	435	GV *gv = (GV *)sv_newmortal ();
397	SPAGAIN;	436	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		437	char sym [64];
		438	int symlen;
		439
		440	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		441	gv_init (gv, aio_stash, sym, symlen, 0);
398		442
399	fh = SvREFCNT_inc (POPs);	443	symlen = snprintf (
		444	sym,
		445	sizeof (sym),
		446	"%s&=%d",
		447	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		448	(int)req->result
		449	);
400		450
		451	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		452	fh = (SV *)gv;
		453	}
		454
401	PUSHMARK (SP);	455	PUSHs (fh);
402	XPUSHs (sv_2mortal (fh));
403	}	456	}
404	break;	457	break;
405		458
		459	case EIO_STATVFS:
		460	case EIO_FSTATVFS:
		461	{
		462	SV *rv = &PL_sv_undef;
		463
		464	if (req->result >= 0)
		465	{
		466	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		467	HV *hv = newHV ();
		468
		469	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		470
		471	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		472	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		473	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		474	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		475	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		476	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		477	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		478	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		479	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		480	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		481	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		482	}
		483
		484	PUSHs (rv);
		485	}
		486
		487	break;
		488
406	case REQ_GROUP:	489	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	490	req->int1 = 2; /* mark group as finished */
408		491
409	if (req->data)	492	if (req->sv1)
410	{	493	{
411	int i;	494	int i;
412	AV *av = (AV *)req->data;	495	AV *av = (AV *)req->sv1;
413		496
414	EXTEND (SP, AvFILL (av) + 1);	497	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	498	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	499	PUSHs (*av_fetch (av, i, 0));
417	}	500	}
418	break;	501	break;
419		502
420	case REQ_NOP:	503	case EIO_NOP:
421	case REQ_BUSY:	504	case EIO_BUSY:
422	break;	505	break;
423		506
		507	case EIO_READLINK:
		508	if (req->result > 0)
		509	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		510	break;
		511
		512	case EIO_STAT:
		513	case EIO_LSTAT:
		514	case EIO_FSTAT:
		515	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		516	PL_laststatval = req->result;
		517	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		518	PUSHs (sv_result);
		519	break;
		520
		521	case EIO_READ:
		522	{
		523	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		524	*SvEND (req->sv2) = 0;
		525	SvPOK_only (req->sv2);
		526	SvSETMAGIC (req->sv2);
		527	PUSHs (sv_result);
		528	}
		529	break;
		530
		531	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		532	if (req->result > 0)
		533	SvIV_set (sv_result, 0);
		534	/* FALLTHROUGH */
		535
424	default:	536	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	537	PUSHs (sv_result);
426	break;	538	break;
427	}	539	}
428		540
		541	errno = req->errorno;
429		542
430	PUTBACK;	543	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	544	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	SPAGAIN;	545	SPAGAIN;
		546
		547	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		548	SvREFCNT_dec (sv_result);
		549	else
		550	sv_result_cache = sv_result;
433		551
434	FREETMPS;	552	FREETMPS;
435	LEAVE;	553	LEAVE;
		554
		555	PUTBACK;
436	}	556	}
437		557
438	if (req->grp)	558	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	559	}
458		560
459	static void req_free (aio_req req)	561	static void req_destroy (aio_req req)
460	{	562	{
461	if (req->self)	563	if (req->self)
462	{	564	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	565	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	566	SvREFCNT_dec (req->self);
465	}	567	}
466		568
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	569	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	570	SvREFCNT_dec (req->sv2);
470	SvREFCNT_dec (req->callback);	571	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475		572
476	Safefree (req);	573	Safefree (req);
477	}	574	}
478		575
479	static void req_cancel_subs (aio_req grp)	576	static void req_cancel_subs (aio_req grp)
480	{	577	{
481	aio_req sub;	578	aio_req sub;
482		579
483	if (grp->type != REQ_GROUP)	580	if (grp->type != EIO_GROUP)
484	return;	581	return;
485		582
486	SvREFCNT_dec (grp->fh2);	583	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	584	grp->sv2 = 0;
488		585
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	586	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	587	}
492		588
493	static void req_cancel (aio_req req)	589	static void
		590	create_respipe (void)
494	{	591	{
495	req->flags |= FLAG_CANCELLED;	592	if (s_epipe_renew (&respipe))
496		593	croak ("IO::AIO: unable to initialize result pipe");
497	req_cancel_subs (req);
498	}	594	}
499		595
		596	static void poll_wait (void)
		597	{
		598	while (eio_nreqs ())
		599	{
		600	int size;
		601
		602	X_LOCK (reslock);
		603	size = res_queue.size;
		604	X_UNLOCK (reslock);
		605
		606	if (size)
		607	return;
		608
		609	etp_maybe_start_thread ();
		610
		611	s_epipe_wait (&respipe);
		612	}
		613	}
		614
500	static int poll_cb ()	615	static int poll_cb (void)
501	{	616	{
502	dSP;
503	int count = 0;
504	int do_croak = 0;
505	aio_req req;
506
507	for (;;)	617	for (;;)
508	{	618	{
509	LOCK (reslock);	619	int res = eio_poll ();
510	req = reqq_shift (&res_queue);
511		620
512	if (req)	621	if (res > 0)
513	{
514	if (!res_queue.size)
515	{
516	/* read any signals sent by the worker threads */
517	char buf [32];
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}
521	}
522
523	UNLOCK (reslock);
524
525	if (!req)
526	break;	622	croak (0);
527		623
528	--nreqs;	624	if (!max_outstanding || max_outstanding > eio_nreqs ())
		625	return res;
529		626
530	if (req->type == REQ_QUIT)	627	poll_wait ();
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{
534	req->fd = 1; /* mark request as delayed */
535	continue;
536	}
537	else
538	{
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	628	}
559
560	return count;
561	}	629	}
562		630
563	static void *aio_proc(void *arg);
564
565	static void start_thread (void)	631	static void atfork_child (void)
566	{	632	{
567	sigset_t fullsigset, oldsigset;	633	create_respipe ();
568	pthread_attr_t attr;
569
570	worker *wrk = calloc (1, sizeof (worker));
571
572	if (!wrk)
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{
586	wrk->prev = &wrk_first;
587	wrk->next = wrk_first.next;
588	wrk_first.next->prev = wrk;
589	wrk_first.next = wrk;
590	started++;
591	}
592	else
593	free (wrk);
594
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}
598
599	static void req_send (aio_req req)
600	{
601	while (started < wanted && nreqs >= started)
602	start_thread ();
603
604	++nreqs;
605
606	LOCK (reqlock);
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	req_send (req);
622	}
623
624	static void min_parallel (int nthreads)
625	{
626	if (wanted < nthreads)
627	wanted = nthreads;
628	}
629
630	static void max_parallel (int nthreads)
631	{
632	int cur = started;
633
634	if (wanted > nthreads)
635	wanted = nthreads;
636
637	while (cur > wanted)
638	{
639	end_thread ();
640	cur--;
641	}
642
643	while (started > wanted)
644	{
645	poll_wait ();
646	poll_cb ();
647	}
648	}
649
650	static void create_pipe ()
651	{
652	if (pipe (respipe))
653	croak ("unable to initialize result pipe");
654
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
659	croak ("cannot set result pipe to nonblocking mode");
660	}	634	}
661		635
662	/*****************************************************************************/	636	/*****************************************************************************/
663	/* work around various missing functions */
664		637
665	#if !HAVE_PREADWRITE	638	#if !_POSIX_MAPPED_FILES
666	# define pread aio_pread	639	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
667	# define pwrite aio_pwrite	640	# define munmap(addr,length) (errno = ENOSYS, -1)
668		641	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
669	/*	642	# define PROT_NONE 0
670	* make our pread/pwrite safe against themselves, but not against	643	# define PROT_WRITE 0
671	* normal read/write by using a mutex. slows down execution a lot,	644	# define MAP_PRIVATE 0
672	* but that's your problem, not mine.	645	# define MAP_SHARED 0
673	*/	646	# define MAP_FIXED 0
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
677	{
678	ssize_t res;
679	off_t ooffset;
680
681	LOCK (preadwritelock);
682	ooffset = lseek (fd, 0, SEEK_CUR);
683	lseek (fd, offset, SEEK_SET);
684	res = read (fd, buf, count);
685	lseek (fd, ooffset, SEEK_SET);
686	UNLOCK (preadwritelock);
687
688	return res;
689	}
690
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
692	{
693	ssize_t res;
694	off_t ooffset;
695
696	LOCK (preadwritelock);
697	ooffset = lseek (fd, 0, SEEK_CUR);
698	lseek (fd, offset, SEEK_SET);
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702
703	return res;
704	}
705	#endif
706
707	#if !HAVE_FDATASYNC
708	# define fdatasync fsync
709	#endif
710
711	#if !HAVE_READAHEAD
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
713
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
715	{
716	dBUF;
717
718	while (count > 0)
719	{
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;
769
770	#if HAVE_SENDFILE
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773
774	# elif __freebsd
775	/*
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782
783	if (res < 0 && sbytes)
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}
787
788	# elif __hpux
789	res = sendfile (ofd, ifd, offset, count, 0, 0);
790
791	# elif __solaris
792	{
793	struct sendfilevec vec;
794	size_t sbytes;
795
796	vec.sfv_fd = ifd;
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800
801	res = sendfilev (ofd, &vec, 1, &sbytes);
802
803	if (res < 0 && sbytes)
804	res = sbytes;
805	}
806
807	# endif	647	#endif
808	#else
809	res = -1;
810	errno = ENOSYS;
811	#endif
812		648
813	if (res < 0	649	#define MMAP_MAGIC PERL_MAGIC_ext
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
815	#if __solaris
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
817	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823		650
824	res = 0;	651	static int
		652	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		653	{
		654	int old_errno = errno;
		655	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		656	errno = old_errno;
825		657
826	while (count)	658	mg->mg_obj = 0; /* just in case */
827	{
828	ssize_t cnt;
829
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
831		659
832	if (cnt <= 0)	660	SvREADONLY_off (sv);
833	{
834	if (cnt && !res) res = -1;
835	break;
836	}
837		661
838	cnt = write (ofd, aio_buf, cnt);	662	if (SvPVX (sv) != mg->mg_ptr)
		663	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
839		664
840	if (cnt <= 0)	665	SvCUR_set (sv, 0);
841	{	666	SvPVX (sv) = 0;
842	if (cnt && !res) res = -1;	667	SvOK_off (sv);
843	break;
844	}
845		668
846	offset += cnt;
847	res += cnt;
848	count -= cnt;
849	}
850	}
851
852	return res;	669	return 0;
853	}	670	}
854		671
855	/* read a full directory */	672	static MGVTBL mmap_vtbl = {
856	static void scandir_ (aio_req req, worker *self)	673	0, 0, 0, 0, mmap_free
857	{	674	};
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916		675
917	/*****************************************************************************/	676	/*****************************************************************************/
918		677
919	static void *aio_proc (void *thr_arg)	678	static SV *
		679	get_cb (SV *cb_sv)
920	{	680	{
921	aio_req req;	681	SvGETMAGIC (cb_sv);
922	int type;	682	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}	683	}
1069		684
1070	#define dREQ \	685	#define dREQ \
		686	SV *cb_cv; \
1071	aio_req req; \	687	aio_req req; \
1072	int req_pri = next_pri; \	688	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	689	next_pri = EIO_PRI_DEFAULT; \
1074	\	690	\
1075	if (SvOK (callback) && !SvROK (callback)) \	691	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	692	\
1078	Newz (0, req, 1, aio_cb); \	693	Newz (0, req, 1, eio_req); \
1079	if (!req) \	694	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	695	croak ("out of memory during eio_req allocation"); \
1081	\	696	\
1082	req->callback = newSVsv (callback); \	697	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	698	req->pri = req_pri
1084		699
1085	#define REQ_SEND \	700	#define REQ_SEND \
		701	PUTBACK; \
1086	req_send (req); \	702	req_submit (req); \
		703	SPAGAIN; \
1087	\	704	\
1088	if (GIMME_V != G_VOID) \	705	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	706	XPUSHs (req_sv (req, aio_req_stash));
1090		707
1091	MODULE = IO::AIO PACKAGE = IO::AIO	708	MODULE = IO::AIO PACKAGE = IO::AIO
1092		709
1093	PROTOTYPES: ENABLE	710	PROTOTYPES: ENABLE
1094		711
1095	BOOT:	712	BOOT:
1096	{	713	{
		714	static const struct {
		715	const char *name;
		716	IV iv;
		717	} *civ, const_iv[] = {
		718	# define const_niv(name, value) { # name, (IV) value },
		719	# define const_iv(name) { # name, (IV) name },
		720	# define const_eio(name) { # name, (IV) EIO_ ## name },
		721	const_iv (EXDEV)
		722	const_iv (ENOSYS)
		723	const_iv (O_RDONLY)
		724	const_iv (O_WRONLY)
		725	const_iv (O_RDWR)
		726	const_iv (O_CREAT)
		727	const_iv (O_TRUNC)
		728	const_iv (O_EXCL)
		729	const_iv (O_APPEND)
		730	#ifndef _WIN32
		731	const_iv (S_IFIFO)
		732	#endif
		733	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		734	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		735	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		736	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		737	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		738	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		739
		740	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		741	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		742	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		743	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		744	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		745
		746	const_iv (ST_RDONLY)
		747	const_iv (ST_NOSUID)
		748	const_iv (ST_NODEV)
		749	const_iv (ST_NOEXEC)
		750	const_iv (ST_SYNCHRONOUS)
		751	const_iv (ST_MANDLOCK)
		752	const_iv (ST_WRITE)
		753	const_iv (ST_APPEND)
		754	const_iv (ST_IMMUTABLE)
		755	const_iv (ST_NOATIME)
		756	const_iv (ST_NODIRATIME)
		757	const_iv (ST_RELATIME)
		758
		759	const_iv (PROT_NONE)
		760	const_iv (PROT_EXEC)
		761	const_iv (PROT_READ)
		762	const_iv (PROT_WRITE)
		763
		764	/*const_iv (MAP_FIXED)*/
		765	const_iv (MAP_PRIVATE)
		766	const_iv (MAP_SHARED)
		767	const_iv (MAP_ANONYMOUS)
		768
		769	/* linuxish */
		770	const_iv (MAP_HUGETLB)
		771	const_iv (MAP_LOCKED)
		772	const_iv (MAP_NORESERVE)
		773	const_iv (MAP_POPULATE)
		774	const_iv (MAP_NONBLOCK)
		775
		776	const_eio (MCL_FUTURE)
		777	const_eio (MCL_CURRENT)
		778
		779	const_eio (MS_ASYNC)
		780	const_eio (MS_INVALIDATE)
		781	const_eio (MS_SYNC)
		782
		783	const_eio (MT_MODIFY)
		784
		785	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		786	const_eio (SYNC_FILE_RANGE_WRITE)
		787	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		788
		789	const_eio (READDIR_DENTS)
		790	const_eio (READDIR_DIRS_FIRST)
		791	const_eio (READDIR_STAT_ORDER)
		792	const_eio (READDIR_FOUND_UNKNOWN)
		793
		794	const_eio (DT_UNKNOWN)
		795	const_eio (DT_FIFO)
		796	const_eio (DT_CHR)
		797	const_eio (DT_DIR)
		798	const_eio (DT_BLK)
		799	const_eio (DT_REG)
		800	const_eio (DT_LNK)
		801	const_eio (DT_SOCK)
		802	const_eio (DT_WHT)
		803	};
		804
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	805	aio_stash = gv_stashpv ("IO::AIO" , 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	806	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	807	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101		808
		809	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		810	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		811
		812	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		813
1102	create_pipe ();	814	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		815
		816	if (eio_init (want_poll, done_poll) < 0)
		817	croak ("IO::AIO: unable to initialise eio library");
		818
		819	/* atfork child called in fifo order, so before eio's handler */
		820	X_THREAD_ATFORK (0, 0, atfork_child);
		821	}
		822
1106	void	823	void
1107	min_parallel (nthreads)	824	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	825	PROTOTYPE: $
		826	CODE:
		827	eio_set_max_poll_reqs (nreqs);
1110		828
1111	void	829	void
1112	max_parallel (nthreads)	830	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	831	PROTOTYPE: $
		832	CODE:
		833	eio_set_max_poll_time (nseconds);
1115		834
1116	void	835	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	836	min_parallel (int nthreads)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	837	PROTOTYPE: $
		838	CODE:
		839	eio_set_min_parallel (nthreads);
		840
		841	void
		842	max_parallel (int nthreads)
		843	PROTOTYPE: $
		844	CODE:
		845	eio_set_max_parallel (nthreads);
		846
		847	void
		848	max_idle (int nthreads)
		849	PROTOTYPE: $
		850	CODE:
		851	eio_set_max_idle (nthreads);
		852
		853	void
		854	max_outstanding (int maxreqs)
		855	PROTOTYPE: $
		856	CODE:
		857	max_outstanding = maxreqs;
		858
		859	void
		860	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1123	PPCODE:	861	PPCODE:
1124	{	862	{
1125	dREQ;	863	dREQ;
1126		864
1127	req->type = REQ_OPEN;	865	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	866	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	867	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	868	req->int1 = flags;
1131	req->mode = mode;	869	req->int2 = mode;
1132		870
1133	REQ_SEND;	871	REQ_SEND;
1134	}	872	}
1135		873
1136	void	874	void
1137	aio_close (fh,callback=&PL_sv_undef)	875	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$
1141	ALIAS:	876	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	877	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	878	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	879	PPCODE:
1146	{	880	{
		881	int fd = s_fileno_croak (fh, 0);
1147	dREQ;	882	dREQ;
1148		883
1149	req->type = ix;	884	req->type = ix;
1150	req->fh = newSVsv (fh);	885	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	886	req->int1 = fd;
1152		887
1153	REQ_SEND (req);	888	REQ_SEND (req);
1154	}	889	}
1155		890
1156	void	891	void
		892	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		893	PPCODE:
		894	{
		895	int fd = s_fileno_croak (fh, 0);
		896	dREQ;
		897
		898	req->type = EIO_SYNC_FILE_RANGE;
		899	req->sv1 = newSVsv (fh);
		900	req->int1 = fd;
		901	req->offs = offset;
		902	req->size = nbytes;
		903	req->int2 = flags;
		904
		905	REQ_SEND (req);
		906	}
		907
		908	void
		909	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		910	PPCODE:
		911	{
		912	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		913	int fd = s_fileno_croak (fh, 0);
		914	dREQ;
		915
		916	if (close_pipe < 0)
		917	{
		918	int pipefd [2];
		919
		920	if (pipe (pipefd) < 0
		921	|| close (pipefd [1]) < 0
		922	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		923	abort (); /*D*/
		924
		925	close_pipe = pipefd [0];
		926	}
		927
		928	req->type = EIO_DUP2;
		929	req->int1 = close_pipe;
		930	req->sv2 = newSVsv (fh);
		931	req->int2 = fd;
		932
		933	REQ_SEND (req);
		934	}
		935
		936	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	937	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	938	ALIAS:
1165	aio_read = REQ_READ	939	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	940	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$
1168	PPCODE:	941	PPCODE:
1169	{	942	{
1170	aio_req req;
1171	STRLEN svlen;	943	STRLEN svlen;
		944	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	945	char *svptr = SvPVbyte (data, svlen);
1173		946	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		947
1177	if (dataoffset < 0)	948	if (dataoffset < 0)
1178	dataoffset += svlen;	949	dataoffset += svlen;
1179		950
1180	if (dataoffset < 0 || dataoffset > svlen)	951	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	952	croak ("dataoffset outside of data scalar");
1182		953
1183	if (ix == REQ_WRITE)	954	if (ix == EIO_WRITE)
1184	{	955	{
1185	/* write: check length and adjust. */	956	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	957	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	958	len = svlen - dataoffset;
1188	}	959	}
1189	else	960	else
1190	{	961	{
1191	/* read: grow scalar as necessary */	962	/* read: check type and grow scalar as necessary */
		963	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	964	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	965	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		966
1198	{	967	{
1199	dREQ;	968	dREQ;
1200		969
1201	req->type = ix;	970	req->type = ix;
1202	req->fh = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	972	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	973	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	974	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	975	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	976	req->ptr2 = (char *)svptr + dataoffset;
		977	req->stroffset = dataoffset;
1209		978
1210	if (!SvREADONLY (data))	979	if (!SvREADONLY (data))
1211	{	980	{
1212	SvREADONLY_on (data);	981	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	982	req->flags |= FLAG_SV2_RO_OFF;
1214	}	983	}
1215		984
1216	REQ_SEND;	985	REQ_SEND;
1217	}	986	}
1218	}	987	}
1219		988
1220	void	989	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	990	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$
1228	PPCODE:	991	PPCODE:
1229	{	992	{
		993	SV *data;
		994	dREQ;
		995
		996	req->type = EIO_READLINK;
		997	req->sv1 = newSVsv (path);
		998	req->ptr1 = SvPVbyte_nolen (req->sv1);
		999
		1000	REQ_SEND;
		1001	}
		1002
		1003	void
		1004	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1005	PPCODE:
		1006	{
		1007	int ifd = s_fileno_croak (in_fh , 0);
		1008	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	1009	dREQ;
1231		1010
1232	req->type = REQ_SENDFILE;	1011	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1012	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1013	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1014	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1015	req->int2 = ifd;
1237	req->offset = in_offset;	1016	req->offs = in_offset;
1238	req->length = length;	1017	req->size = length;
1239		1018
1240	REQ_SEND;	1019	REQ_SEND;
1241	}	1020	}
1242		1021
1243	void	1022	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1023	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$
1250	PPCODE:	1024	PPCODE:
1251	{	1025	{
		1026	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1027	dREQ;
1253		1028
1254	req->type = REQ_READAHEAD;	1029	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1030	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1031	req->int1 = fd;
1257	req->offset = offset;	1032	req->offs = offset;
1258	req->length = length;	1033	req->size = length;
1259		1034
1260	REQ_SEND;	1035	REQ_SEND;
1261	}	1036	}
1262		1037
1263	void	1038	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1039	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1040	ALIAS:
1268	aio_stat = REQ_STAT	1041	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1042	aio_lstat = EIO_LSTAT
		1043	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1044	PPCODE:
1271	{	1045	{
1272	dREQ;	1046	dREQ;
1273		1047
1274	New (0, req->statdata, 1, Stat_t);	1048	req->sv1 = newSVsv (fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280		1049
1281	if (SvPOK (fh_or_path))	1050	if (SvPOK (req->sv1))
1282	{	1051	{
1283	req->type = ix;	1052	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	1054	}
1287	else	1055	else
1288	{	1056	{
1289	req->type = REQ_FSTAT;	1057	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1058	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1059	}
1293		1060
1294	REQ_SEND;	1061	REQ_SEND;
1295	}	1062	}
1296		1063
1297	void	1064	void
		1065	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1066	PPCODE:
		1067	{
		1068	dREQ;
		1069
		1070	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1071	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1072	req->sv1 = newSVsv (fh_or_path);
		1073
		1074	if (SvPOK (req->sv1))
		1075	{
		1076	req->type = EIO_UTIME;
		1077	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1078	}
		1079	else
		1080	{
		1081	req->type = EIO_FUTIME;
		1082	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1083	}
		1084
		1085	REQ_SEND;
		1086	}
		1087
		1088	void
		1089	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1090	PPCODE:
		1091	{
		1092	dREQ;
		1093
		1094	req->sv1 = newSVsv (fh_or_path);
		1095	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1096
		1097	if (SvPOK (req->sv1))
		1098	{
		1099	req->type = EIO_TRUNCATE;
		1100	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1101	}
		1102	else
		1103	{
		1104	req->type = EIO_FTRUNCATE;
		1105	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1106	}
		1107
		1108	REQ_SEND;
		1109	}
		1110
		1111	void
		1112	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1113	ALIAS:
		1114	aio_chmod = EIO_CHMOD
		1115	aio_mkdir = EIO_MKDIR
		1116	PPCODE:
		1117	{
		1118	dREQ;
		1119
		1120	req->int2 = mode;
		1121	req->sv1 = newSVsv (fh_or_path);
		1122
		1123	if (SvPOK (req->sv1))
		1124	{
		1125	req->type = ix;
		1126	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1127	}
		1128	else
		1129	{
		1130	req->type = EIO_FCHMOD;
		1131	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1132	}
		1133
		1134	REQ_SEND;
		1135	}
		1136
		1137	void
		1138	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1139	PPCODE:
		1140	{
		1141	dREQ;
		1142
		1143	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1144	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1145	req->sv1 = newSVsv (fh_or_path);
		1146
		1147	if (SvPOK (req->sv1))
		1148	{
		1149	req->type = EIO_CHOWN;
		1150	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1151	}
		1152	else
		1153	{
		1154	req->type = EIO_FCHOWN;
		1155	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1156	}
		1157
		1158	REQ_SEND;
		1159	}
		1160
		1161	void
		1162	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1163	PPCODE:
		1164	{
		1165	dREQ;
		1166
		1167	req->type = EIO_READDIR;
		1168	req->sv1 = newSVsv (pathname);
		1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1170	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1171
		1172	if (flags & EIO_READDIR_DENTS)
		1173	req->int1 |= EIO_READDIR_CUSTOM2;
		1174
		1175	REQ_SEND;
		1176	}
		1177
		1178	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1179	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1180	ALIAS:
1302	aio_unlink = REQ_UNLINK	1181	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1182	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1183	aio_readdir = EIO_READDIR
1305	PPCODE:	1184	PPCODE:
1306	{	1185	{
1307	dREQ;	1186	dREQ;
1308		1187
1309	req->type = ix;	1188	req->type = ix;
1310	req->data = newSVsv (pathname);	1189	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1190	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1191
1313	REQ_SEND;	1192	REQ_SEND;
1314	}	1193	}
1315		1194
1316	void	1195	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1196	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1197	ALIAS:
1322	aio_link = REQ_LINK	1198	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1199	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1200	aio_rename = EIO_RENAME
1325	PPCODE:	1201	PPCODE:
1326	{	1202	{
1327	dREQ;	1203	dREQ;
1328		1204
1329	req->type = ix;	1205	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1206	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1207	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1208	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1209	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1210
1335	REQ_SEND;	1211	REQ_SEND;
1336	}	1212	}
1337		1213
1338	void	1214	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1215	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1216	PPCODE:
1343	{	1217	{
1344	dREQ;	1218	dREQ;
1345		1219
1346	req->type = REQ_BUSY;	1220	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1221	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1222	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1223	req->int2 = (mode_t)mode;
		1224	req->offs = dev;
		1225
1350	REQ_SEND;	1226	REQ_SEND;
1351	}	1227	}
1352		1228
1353	void	1229	void
1354	aio_group (callback=&PL_sv_undef)	1230	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1355	SV * callback	1231	ALIAS:
1356	PROTOTYPE: ;$	1232	aio_mtouch = EIO_MTOUCH
		1233	aio_msync = EIO_MSYNC
1357	PPCODE:	1234	PPCODE:
1358	{	1235	{
		1236	STRLEN svlen;
		1237	char *svptr = SvPVbyte (data, svlen);
		1238	UV len = SvUV (length);
		1239
		1240	if (offset < 0)
		1241	offset += svlen;
		1242
		1243	if (offset < 0 || offset > svlen)
		1244	croak ("offset outside of scalar");
		1245
		1246	if (!SvOK (length) || len + offset > svlen)
		1247	len = svlen - offset;
		1248
		1249	{
		1250	dREQ;
		1251
		1252	req->type = ix;
		1253	req->sv2 = SvREFCNT_inc (data);
		1254	req->ptr2 = (char *)svptr + offset;
		1255	req->size = len;
		1256	req->int1 = flags;
		1257
		1258	REQ_SEND;
		1259	}
		1260	}
		1261
		1262	void
		1263	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1264	PPCODE:
		1265	{
		1266	STRLEN svlen;
		1267	char *svptr = SvPVbyte (data, svlen);
		1268	UV len = SvUV (length);
		1269
		1270	if (offset < 0)
		1271	offset += svlen;
		1272
		1273	if (offset < 0 || offset > svlen)
		1274	croak ("offset outside of scalar");
		1275
		1276	if (!SvOK (length) || len + offset > svlen)
		1277	len = svlen - offset;
		1278
		1279	{
		1280	dREQ;
		1281
		1282	req->type = EIO_MLOCK;
		1283	req->sv2 = SvREFCNT_inc (data);
		1284	req->ptr2 = (char *)svptr + offset;
		1285	req->size = len;
		1286
		1287	REQ_SEND;
		1288	}
		1289	}
		1290
		1291	void
		1292	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1293	PPCODE:
		1294	{
		1295	dREQ;
		1296
		1297	req->type = EIO_MLOCKALL;
		1298	req->int1 = flags;
		1299
		1300	REQ_SEND;
		1301	}
		1302
		1303	void
		1304	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1305	PPCODE:
		1306	{
1359	dREQ;	1307	dREQ;
1360		1308
		1309	req->type = EIO_BUSY;
		1310	req->nv1 = delay < 0. ? 0. : delay;
		1311
		1312	REQ_SEND;
		1313	}
		1314
		1315	void
		1316	aio_group (SV *callback=&PL_sv_undef)
		1317	PPCODE:
		1318	{
		1319	dREQ;
		1320
1361	req->type = REQ_GROUP;	1321	req->type = EIO_GROUP;
		1322
1362	req_send (req);	1323	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1324	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1325	}
1366		1326
1367	void	1327	void
1368	aio_nop (callback=&PL_sv_undef)	1328	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1329	ALIAS:
		1330	aio_nop = EIO_NOP
		1331	aio_sync = EIO_SYNC
1370	PPCODE:	1332	PPCODE:
1371	{	1333	{
1372	dREQ;	1334	dREQ;
1373		1335
1374	req->type = REQ_NOP;	1336	req->type = ix;
1375		1337
1376	REQ_SEND;	1338	REQ_SEND;
1377	}	1339	}
1378		1340
1379	void	1341	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1342	aioreq_pri (int pri = 0)
1381	CODE:	1343	CODE:
		1344	RETVAL = next_pri;
		1345	if (items > 0)
		1346	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1347	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1348	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1349	next_pri = pri;
		1350	}
		1351	OUTPUT:
		1352	RETVAL
1385		1353
1386	void	1354	void
1387	aioreq_nice (int nice = 0)	1355	aioreq_nice (int nice = 0)
1388	CODE:	1356	CODE:
1389	nice = next_pri - nice;	1357	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1358	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1359	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1360	next_pri = nice;
1393		1361
1394	void	1362	void
1395	flush ()	1363	flush ()
1396	PROTOTYPE:
1397	CODE:	1364	CODE:
1398	while (nreqs)	1365	while (eio_nreqs ())
1399	{	1366	{
1400	poll_wait ();	1367	poll_wait ();
1401	poll_cb ();	1368	poll_cb ();
1402	}	1369	}
1403		1370
1404	void	1371	int
1405	poll()	1372	poll ()
1406	PROTOTYPE:
1407	CODE:	1373	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1374	poll_wait ();
1411	poll_cb ();	1375	RETVAL = poll_cb ();
1412	}
1413
1414	int
1415	poll_fileno()
1416	PROTOTYPE:
1417	CODE:
1418	RETVAL = respipe [0];
1419	OUTPUT:	1376	OUTPUT:
1420	RETVAL	1377	RETVAL
1421		1378
1422	int	1379	int
		1380	poll_fileno ()
		1381	CODE:
		1382	RETVAL = s_epipe_fd (&respipe);
		1383	OUTPUT:
		1384	RETVAL
		1385
		1386	int
1423	poll_cb(...)	1387	poll_cb (...)
1424	PROTOTYPE:	1388	PROTOTYPE:
1425	CODE:	1389	CODE:
1426	RETVAL = poll_cb ();	1390	RETVAL = poll_cb ();
1427	OUTPUT:	1391	OUTPUT:
1428	RETVAL	1392	RETVAL
1429		1393
1430	void	1394	void
1431	poll_wait()	1395	poll_wait ()
1432	PROTOTYPE:
1433	CODE:	1396	CODE:
1434	if (nreqs)
1435	poll_wait ();	1397	poll_wait ();
1436		1398
1437	int	1399	int
1438	nreqs()	1400	nreqs ()
1439	PROTOTYPE:
1440	CODE:	1401	CODE:
1441	RETVAL = nreqs;	1402	RETVAL = eio_nreqs ();
1442	OUTPUT:	1403	OUTPUT:
1443	RETVAL	1404	RETVAL
1444		1405
		1406	int
		1407	nready ()
		1408	CODE:
		1409	RETVAL = eio_nready ();
		1410	OUTPUT:
		1411	RETVAL
		1412
		1413	int
		1414	npending ()
		1415	CODE:
		1416	RETVAL = eio_npending ();
		1417	OUTPUT:
		1418	RETVAL
		1419
		1420	int
		1421	nthreads ()
		1422	CODE:
		1423	RETVAL = eio_nthreads ();
		1424	OUTPUT:
		1425	RETVAL
		1426
		1427	int
		1428	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1429	CODE:
		1430	RETVAL = posix_fadvise (fh, offset, length, advice);
		1431	OUTPUT:
		1432	RETVAL
		1433
		1434	ssize_t
		1435	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1436	CODE:
		1437	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441	void
		1442	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1443	PPCODE:
		1444	sv_unmagic (scalar, MMAP_MAGIC);
		1445	{
		1446	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1447	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1448	if (addr == (void *)-1)
		1449	XSRETURN_NO;
		1450
		1451	sv_force_normal (scalar);
		1452
		1453	/* we store the length in mg_obj, as namlen is I32 :/ */
		1454	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1455	->mg_obj = (SV *)length;
		1456
		1457	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1458
		1459	if (!(prot & PROT_WRITE))
		1460	SvREADONLY_on (scalar);
		1461
		1462	if (SvLEN (scalar))
		1463	Safefree (SvPVX (scalar));
		1464
		1465	SvPVX (scalar) = (char *)addr;
		1466	SvCUR_set (scalar, length);
		1467	SvLEN_set (scalar, 0);
		1468	SvPOK_only (scalar);
		1469
		1470	XSRETURN_YES;
		1471	}
		1472
		1473	void
		1474	munmap (SV *scalar)
		1475	CODE:
		1476	sv_unmagic (scalar, MMAP_MAGIC);
		1477
		1478	int
		1479	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1480	ALIAS:
		1481	mprotect = 1
		1482	CODE:
		1483	{
		1484	STRLEN svlen;
		1485	void *addr = SvPVbyte (scalar, svlen);
		1486	size_t len = SvUV (length);
		1487
		1488	if (offset < 0)
		1489	offset += svlen;
		1490
		1491	if (offset < 0 || offset > svlen)
		1492	croak ("offset outside of scalar");
		1493
		1494	if (!SvOK (length) || len + offset > svlen)
		1495	len = svlen - offset;
		1496
		1497	addr = (void *)(((intptr_t)addr) + offset);
		1498	eio_page_align (&addr, &len);
		1499
		1500	switch (ix)
		1501	{
		1502	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1503	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1504	}
		1505	}
		1506	OUTPUT:
		1507	RETVAL
		1508
		1509	int
		1510	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1511	CODE:
		1512	{
		1513	STRLEN svlen;
		1514	void *addr = SvPVbyte (scalar, svlen);
		1515	size_t len = SvUV (length);
		1516
		1517	if (offset < 0)
		1518	offset += svlen;
		1519
		1520	if (offset < 0 || offset > svlen)
		1521	croak ("offset outside of scalar");
		1522
		1523	if (!SvOK (length) || len + offset > svlen)
		1524	len = svlen - offset;
		1525
		1526	addr = (void *)(((intptr_t)addr) + offset);
		1527	eio_page_align (&addr, &len);
		1528	#if _POSIX_MEMLOCK
		1529	RETVAL = munlock (addr, len);
		1530	#else
		1531	RETVAL = ((errno = ENOSYS), -1);
		1532	#endif
		1533	}
		1534	OUTPUT:
		1535	RETVAL
		1536
		1537	int
		1538	munlockall ()
		1539	CODE:
		1540	#if _POSIX_MEMLOCK
		1541	munlockall ();
		1542	#else
		1543	RETVAL = -1;
		1544	errno = ENOSYS;
		1545	#endif
		1546	OUTPUT:
		1547	RETVAL
		1548
		1549	void _on_next_submit (SV *cb)
		1550	CODE:
		1551	SvREFCNT_dec (on_next_submit);
		1552	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1553
1445	PROTOTYPES: DISABLE	1554	PROTOTYPES: DISABLE
1446		1555
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1556	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1557
1449	void	1558	void
1450	cancel (aio_req_ornot req)	1559	cancel (aio_req_ornot req)
1451	CODE:	1560	CODE:
1452	req_cancel (req);	1561	eio_cancel (req);
1453		1562
1454	void	1563	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1564	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1456	CODE:	1565	PPCODE:
		1566	{
		1567	if (GIMME_V != G_VOID)
		1568	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1569
		1570	if (items > 1)
		1571	{
		1572	SV *cb_cv =get_cb (callback);
		1573
1457	SvREFCNT_dec (req->callback);	1574	SvREFCNT_dec (req->callback);
1458	req->callback = newSVsv (callback);	1575	req->callback = SvREFCNT_inc (cb_cv);
		1576	}
		1577	}
1459		1578
1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1579	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1461		1580
1462	void	1581	void
1463	add (aio_req grp, ...)	1582	add (aio_req grp, ...)
1464	PPCODE:	1583	PPCODE:
1465	{	1584	{
1466	int i;	1585	int i;
1467	aio_req req;
1468		1586
1469	if (grp->fd == 2)	1587	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1588	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1589
1472	for (i = 1; i < items; ++i )	1590	for (i = 1; i < items; ++i )
1473	{	1591	{
		1592	aio_req req;
		1593
1474	if (GIMME_V != G_VOID)	1594	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1595	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		1596
1477	req = SvAIO_REQ (ST (i));	1597	req = SvAIO_REQ (ST (i));
1478		1598
1479	if (req)	1599	if (req)
1480	{	1600	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	1601	}
1493	}	1602	}
1494		1603
1495	void	1604	void
1496	cancel_subs (aio_req_ornot req)	1605	cancel_subs (aio_req_ornot req)
…		…
1500	void	1609	void
1501	result (aio_req grp, ...)	1610	result (aio_req grp, ...)
1502	CODE:	1611	CODE:
1503	{	1612	{
1504	int i;	1613	int i;
		1614	AV *av;
		1615
		1616	grp->errorno = errno;
		1617
1505	AV *av = newAV ();	1618	av = newAV ();
		1619	av_extend (av, items - 1);
1506		1620
1507	for (i = 1; i < items; ++i )	1621	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1622	av_push (av, newSVsv (ST (i)));
1509		1623
1510	SvREFCNT_dec (grp->data);	1624	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1625	grp->sv1 = (SV *)av;
1512	}	1626	}
		1627
		1628	void
		1629	errno (aio_req grp, int errorno = errno)
		1630	CODE:
		1631	grp->errorno = errorno;
1513		1632
1514	void	1633	void
1515	limit (aio_req grp, int limit)	1634	limit (aio_req grp, int limit)
1516	CODE:	1635	CODE:
1517	grp->fd2 = limit;	1636	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		1637
1520	void	1638	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1639	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1640	CODE:
1523	{	1641	{
1524	SvREFCNT_dec (grp->fh2);	1642	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1643	grp->sv2 = newSVsv (callback);
		1644	grp->feed = aio_grp_feed;
1526		1645
1527	if (grp->fd2 <= 0)	1646	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1647	grp->int2 = 2;
1529		1648
1530	aio_grp_feed (grp);	1649	eio_grp_limit (grp, grp->int2);
1531	}	1650	}
1532		1651

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