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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC vs.
Revision 1.175 by root, Wed Dec 1 04:43:12 2010 UTC

1	#if __linux	1	#include "libeio/xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"	9	#include "schmorp.h"
14
15	#include <pthread.h>
16		10
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>
20	#include <sys/select.h>
21	#include <sys/types.h>	14	#include <sys/types.h>
22	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
23	#include <limits.h>	17	#include <limits.h>
24	#include <unistd.h>
25	#include <fcntl.h>	18	#include <fcntl.h>
26	#include <signal.h>
27	#include <sched.h>	19	#include <sched.h>
28		20
29	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
30	# if __linux
31	# include <sys/sendfile.h>	22	# include <sys/mman.h>
32	# elif __freebsd	23	#endif
33	# 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
34	# include <sys/uio.h>	68	# include <sys/time.h>
35	# elif __hpux
36	# include <sys/socket.h>
37	# elif __solaris /* not yet */
38	# 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/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	#endif
		128	#ifndef POSIX_FADV_SEQUENTIAL
		129	# define POSIX_FADV_SEQUENTIAL 0
		130	#endif
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134	#ifndef POSIX_FADV_NOREUSE
		135	# define POSIX_FADV_NOREUSE 0
		136	#endif
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140	#ifndef POSIX_FADV_DONTNEED
		141	# define POSIX_FADV_DONTNEED 0
		142	#endif
		143
		144	#if !HAVE_POSIX_FADVISE
		145	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef POSIX_MADV_NORMAL
		149	# define POSIX_MADV_NORMAL 0
		150	#endif
		151	#ifndef POSIX_MADV_SEQUENTIAL
		152	# define POSIX_MADV_SEQUENTIAL 0
		153	#endif
		154	#ifndef POSIX_MADV_RANDOM
		155	# define POSIX_MADV_RANDOM 0
		156	#endif
		157	#ifndef POSIX_MADV_WILLNEED
		158	# define POSIX_MADV_WILLNEED 0
		159	#endif
		160	#ifndef POSIX_MADV_DONTNEED
		161	# define POSIX_MADV_DONTNEED 0
		162	#endif
		163
		164	#if !HAVE_POSIX_MADVISE
		165	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		166	#endif
		167
		168	#ifndef PROT_NONE
		169	# define PROT_NONE 0
		170	#endif
		171	#ifndef PROT_READ
		172	# define PROT_READ 0
		173	#endif
		174	#ifndef PROT_WRITE
		175	# define PROT_READ 0
		176	#endif
		177	#ifndef PROT_EXEC
		178	# define PROT_EXEC 0
		179	#endif
		180
		181	#ifndef ST_NODEV
		182	# define ST_NODEV 0
		183	#endif
		184	#ifndef ST_NOEXEC
		185	# define ST_NOEXEC 0
		186	#endif
		187	#ifndef ST_SYNCHRONOUS
		188	# define ST_SYNCHRONOUS 0
		189	#endif
		190	#ifndef ST_MANDLOCK
		191	# define ST_MANDLOCK 0
		192	#endif
		193	#ifndef ST_WRITE
		194	# define ST_WRITE 0
		195	#endif
		196	#ifndef ST_APPEND
		197	# define ST_APPEND 0
		198	#endif
		199	#ifndef ST_IMMUTABLE
		200	# define ST_IMMUTABLE 0
		201	#endif
		202	#ifndef ST_NOATIME
		203	# define ST_NOATIME 0
		204	#endif
		205	#ifndef ST_NODIRATIME
		206	# define ST_NODIRATIME 0
		207	#endif
		208	#ifndef ST_RELATIME
		209	# define ST_RELATIME 0
		210	#endif
		211
		212	#ifndef MAP_ANONYMOUS
		213	# ifdef MAP_ANON
		214	# define MAP_ANONYMOUS MAP_ANON
39	# else	215	# else
40	# error sendfile support requested but not available	216	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	217	# endif
42	#endif	218	#endif
43		219	#ifndef MAP_HUGETLB
44	/* used for struct dirent, AIX doesn't provide it */	220	# define MAP_HUGETLB 0
45	#ifndef NAME_MAX
46	# define NAME_MAX 4096
47	#endif	221	#endif
48		222	#ifndef MAP_LOCKED
49	#if __ia64	223	# define MAP_LOCKED 0
50	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif	224	#endif
		225	#ifndef MAP_NORESERVE
		226	# define MAP_NORESERVE 0
		227	#endif
		228	#ifndef MAP_POPULATE
		229	# define MAP_POPULATE 0
		230	#endif
		231	#ifndef MAP_NONBLOCK
		232	# define MAP_NONBLOCK 0
		233	#endif
56		234
57	/* buffer size for various temporary buffers */	235	#ifndef PAGESIZE
58	#define AIO_BUFSIZE 65536	236	# define PAGESIZE sysconf (_SC_PAGESIZE)
		237	#endif
59		238
60	#define dBUF \	239	static int req_invoke (eio_req *req);
61	char *aio_buf = malloc (AIO_BUFSIZE); \	240	#define EIO_FINISH(req) req_invoke (req)
62	if (!aio_buf) \	241	static void req_destroy (eio_req *grp);
63	return -1;	242	#define EIO_DESTROY(req) req_destroy (req)
64
65	#define fBUF free (aio_buf)
66		243
67	enum {	244	enum {
68	REQ_QUIT,	245	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
69	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
73	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
75	REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,
77	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,
79	};	246	};
80		247
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	248	#include "libeio/eio.c"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		249
84	typedef struct aio_cb
85	{
86	struct aio_cb *volatile next;
87
88	SV *data, *callback;
89	SV *fh, *fh2;
90	void *dataptr, *data2ptr;
91	Stat_t *statdata;
92	off_t offset;
93	size_t length;
94	ssize_t result;
95
96	STRLEN dataoffset;
97	int type;
98	int fd, fd2;
99	int errorno;
100	mode_t mode; /* open */
101
102	unsigned char flags;
103	unsigned char pri;
104
105	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;
108
109	enum {
110	FLAG_CANCELLED = 0x01,
111	};
112
113	typedef aio_cb *aio_req;	250	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	251	typedef eio_req *aio_req_ornot;
115		252
116	enum {	253	static SV *on_next_submit;
117	PRI_MIN = -4,	254	static int next_pri = EIO_PRI_DEFAULT;
118	PRI_MAX = 4,
119
120	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};
124
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126
127	static int started, wanted;
128	static volatile int nreqs;
129	static int max_outstanding = 1<<30;	255	static int max_outstanding;
130	static int respipe [2];
131		256
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	257	static s_epipe respipe;
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
134	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
136	#endif
137		258
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	259	static void req_destroy (aio_req req);
139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
141
142	/*
143	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.
146	*/
147	typedef struct {
148	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
149	int size;
150	} reqq;
151
152	static reqq req_queue;
153	static reqq res_queue;
154
155	int reqq_push (reqq *q, aio_req req)
156	{
157	int pri = req->pri;
158	req->next = 0;
159
160	if (q->qe[pri])
161	{
162	q->qe[pri]->next = req;
163	q->qe[pri] = req;
164	}
165	else
166	q->qe[pri] = q->qs[pri] = req;
167
168	return q->size++;
169	}
170
171	aio_req reqq_shift (reqq *q)
172	{
173	int pri;
174
175	if (!q->size)
176	return 0;
177
178	--q->size;
179
180	for (pri = NUM_PRI; pri--; )
181	{
182	aio_req req = q->qs[pri];
183
184	if (req)
185	{
186	if (!(q->qs[pri] = req->next))
187	q->qe[pri] = 0;
188
189	return req;
190	}
191	}
192
193	abort ();
194	}
195
196	static void req_invoke (aio_req req);	260	static void req_cancel (aio_req req);
197	static void req_free (aio_req req);	261
		262	static void want_poll (void)
		263	{
		264	/* write a dummy byte to the pipe so fh becomes ready */
		265	s_epipe_signal (&respipe);
		266	}
		267
		268	static void done_poll (void)
		269	{
		270	/* read any signals sent by the worker threads */
		271	s_epipe_drain (&respipe);
		272	}
198		273
199	/* must be called at most once */	274	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	275	static SV *req_sv (aio_req req, HV *stash)
201	{	276	{
202	if (!req->self)	277	if (!req->self)
203	{	278	{
204	req->self = (SV *)newHV ();	279	req->self = (SV *)newHV ();
205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	280	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
206	}	281	}
207		282
208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	283	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
209	}	284	}
210		285
211	static aio_req SvAIO_REQ (SV *sv)	286	static aio_req SvAIO_REQ (SV *sv)
212	{	287	{
213	MAGIC *mg;	288	MAGIC *mg;
214		289
215	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	290	if (!SvROK (sv)
		291	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		292	&& SvSTASH (SvRV (sv)) != aio_req_stash
		293	&& !sv_derived_from (sv, "IO::AIO::REQ")))
216	croak ("object of class " AIO_REQ_KLASS " expected");	294	croak ("object of class IO::AIO::REQ expected");
217		295
218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	296	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
219		297
220	return mg ? (aio_req)mg->mg_ptr : 0;	298	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	299	}
222		300
223	static void aio_grp_feed (aio_req grp)	301	static void aio_grp_feed (aio_req grp)
224	{	302	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	303	if (grp->sv2 && SvOK (grp->sv2))
226	{	304	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	305	dSP;
232		306
233	ENTER;	307	ENTER;
234	SAVETMPS;	308	SAVETMPS;
235	PUSHMARK (SP);	309	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
237	PUTBACK;	311	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	313	SPAGAIN;
240	FREETMPS;	314	FREETMPS;
241	LEAVE;	315	LEAVE;
242	}
243
244	/* stop if no progress has been made */
245	if (old_len == grp->length)
246	{
247	SvREFCNT_dec (grp->fh2);
248	grp->fh2 = 0;
249	break;
250	}
251	}	316	}
252	}	317	}
253		318
254	static void aio_grp_dec (aio_req grp)	319	static void req_submit (eio_req *req)
255	{	320	{
256	--grp->length;	321	eio_submit (req);
257		322
258	/* call feeder, if applicable */	323	if (expect_false (on_next_submit))
259	aio_grp_feed (grp);
260
261	/* finish, if done */
262	if (!grp->length && grp->fd)
263	{	324	{
264	req_invoke (grp);	325	dSP;
265	req_free (grp);	326	SV *cb = sv_2mortal (on_next_submit);
		327
		328	on_next_submit = 0;
		329
		330	PUSHMARK (SP);
		331	PUTBACK;
		332	call_sv (cb, G_DISCARD | G_EVAL);
266	}	333	}
267	}	334	}
268		335
269	static void poll_wait ()	336	static int req_invoke (eio_req *req)
270	{	337	{
271	fd_set rfd;	338	if (req->flags & FLAG_SV2_RO_OFF)
		339	SvREADONLY_off (req->sv2);
272		340
273	while (nreqs)	341	if (!EIO_CANCELLED (req) && req->callback)
274	{	342	{
275	int size;
276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277	pthread_mutex_lock (&reslock);
278	#endif
279	size = res_queue.size;
280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281	pthread_mutex_unlock (&reslock);
282	#endif
283
284	if (size)
285	return;
286
287	FD_ZERO(&rfd);
288	FD_SET(respipe [0], &rfd);
289
290	select (respipe [0] + 1, &rfd, 0, 0, 0);
291	}
292	}
293
294	static void req_invoke (aio_req req)
295	{
296	dSP;	343	dSP;
297		344	static SV *sv_result_cache; /* caches the result integer SV */
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	345	SV *sv_result;
299	{
300	errno = req->errorno;
301		346
302	ENTER;	347	ENTER;
303	SAVETMPS;	348	SAVETMPS;
304	PUSHMARK (SP);	349	PUSHMARK (SP);
305	EXTEND (SP, 1);	350	EXTEND (SP, 1);
306		351
		352	/* do not recreate the result IV from scratch each time */
		353	if (expect_true (sv_result_cache))
		354	{
		355	sv_result = sv_result_cache; sv_result_cache = 0;
		356	SvIV_set (sv_result, req->result);
		357	}
		358	else
		359	{
		360	sv_result = newSViv (req->result);
		361	SvREADONLY_on (sv_result);
		362	}
		363
307	switch (req->type)	364	switch (req->type)
308	{	365	{
309	case REQ_READDIR:	366	case EIO_READDIR:
310	{	367	{
311	SV *rv = &PL_sv_undef;	368	SV *rv = &PL_sv_undef;
312		369
313	if (req->result >= 0)	370	if (req->result >= 0)
314	{	371	{
		372	int i;
315	char *buf = req->data2ptr;	373	char *names = (char *)req->ptr2;
		374	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316	AV *av = newAV ();	375	AV *av = newAV ();
317		376
318	while (req->result)	377	av_extend (av, req->result - 1);
		378
		379	for (i = 0; i < req->result; ++i)
319	{	380	{
		381	if (req->int1 & EIO_READDIR_DENTS)
		382	{
		383	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		384
		385	if (req->int1 & EIO_READDIR_CUSTOM2)
		386	{
		387	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		388	AV *avent = newAV ();
		389
		390	av_extend (avent, 2);
		391
		392	if (!sv_type [ent->type])
		393	{
		394	sv_type [ent->type] = newSViv (ent->type);
		395	SvREADONLY_on (sv_type [ent->type]);
		396	}
		397
		398	av_store (avent, 0, namesv);
		399	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		400	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		401
		402	av_store (av, i, newRV_noinc ((SV *)avent));
		403	}
		404	else
		405	av_store (av, i, namesv);
		406
		407	++ent;
		408	}
		409	else
		410	{
320	SV *sv = newSVpv (buf, 0);	411	SV *name = newSVpv (names, 0);
321
322	av_push (av, sv);	412	av_store (av, i, name);
323	buf += SvCUR (sv) + 1;	413	names += SvCUR (name) + 1;
324	req->result--;	414	}
325	}	415	}
326		416
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	417	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	418	}
329		419
330	PUSHs (rv);	420	PUSHs (rv);
		421
		422	if (req->int1 & EIO_READDIR_CUSTOM1)
		423	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331	}	424	}
332	break;	425	break;
333		426
334	case REQ_OPEN:	427	case EIO_OPEN:
335	{	428	{
336	/* convert fd to fh */	429	/* convert fd to fh */
337	SV *fh;	430	SV *fh = &PL_sv_undef;
338		431
339	PUSHs (sv_2mortal (newSViv (req->result)));	432	if (req->result >= 0)
340	PUTBACK;	433	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	434	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	435	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		436	char sym [64];
		437	int symlen;
		438
		439	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		440	gv_init (gv, aio_stash, sym, symlen, 0);
343		441
344	fh = SvREFCNT_inc (POPs);	442	symlen = snprintf (
		443	sym,
		444	sizeof (sym),
		445	"%s&=%d",
		446	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		447	(int)req->result
		448	);
345		449
		450	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		451	fh = (SV *)gv;
		452	}
		453
346	PUSHMARK (SP);	454	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	455	}
349	break;	456	break;
350		457
		458	case EIO_STATVFS:
		459	case EIO_FSTATVFS:
		460	{
		461	SV *rv = &PL_sv_undef;
		462
		463	if (req->result >= 0)
		464	{
		465	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		466	HV *hv = newHV ();
		467
		468	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		469
		470	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		471	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		472	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		473	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		474	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		475	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		476	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		477	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		478	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		479	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		480	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		481	}
		482
		483	PUSHs (rv);
		484	}
		485
		486	break;
		487
351	case REQ_GROUP:	488	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	489	req->int1 = 2; /* mark group as finished */
353		490
354	if (req->data)	491	if (req->sv1)
355	{	492	{
356	int i;	493	int i;
357	AV *av = (AV *)req->data;	494	AV *av = (AV *)req->sv1;
358		495
359	EXTEND (SP, AvFILL (av) + 1);	496	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	497	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	498	PUSHs (*av_fetch (av, i, 0));
362	}	499	}
363	break;	500	break;
364		501
365	case REQ_NOP:	502	case EIO_NOP:
366	case REQ_SLEEP:	503	case EIO_BUSY:
367	break;	504	break;
368		505
		506	case EIO_READLINK:
		507	if (req->result > 0)
		508	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		509	break;
		510
		511	case EIO_STAT:
		512	case EIO_LSTAT:
		513	case EIO_FSTAT:
		514	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		515	PL_laststatval = req->result;
		516	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		517	PUSHs (sv_result);
		518	break;
		519
		520	case EIO_READ:
		521	{
		522	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		523	*SvEND (req->sv2) = 0;
		524	SvPOK_only (req->sv2);
		525	SvSETMAGIC (req->sv2);
		526	PUSHs (sv_result);
		527	}
		528	break;
		529
		530	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		531	if (req->result > 0)
		532	SvIV_set (sv_result, 0);
		533	/* FALLTHROUGH */
		534
369	default:	535	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	536	PUSHs (sv_result);
371	break;	537	break;
372	}	538	}
373		539
		540	errno = req->errorno;
374		541
375	PUTBACK;	542	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	543	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	544	SPAGAIN;
		545
		546	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		547	SvREFCNT_dec (sv_result);
		548	else
		549	sv_result_cache = sv_result;
378		550
379	FREETMPS;	551	FREETMPS;
380	LEAVE;	552	LEAVE;
		553
		554	PUTBACK;
381	}	555	}
382		556
383	if (req->grp)	557	return !!SvTRUE (ERRSV);
384	{
385	aio_req grp = req->grp;
386
387	/* unlink request */
388	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
389	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
390
391	if (grp->grp_first == req)
392	grp->grp_first = req->grp_next;
393
394	aio_grp_dec (grp);
395	}
396
397	if (SvTRUE (ERRSV))
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	558	}
403		559
404	static void req_free (aio_req req)	560	static void req_destroy (aio_req req)
405	{	561	{
406	if (req->self)	562	if (req->self)
407	{	563	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	564	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	565	SvREFCNT_dec (req->self);
410	}	566	}
411		567
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	568	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	569	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	570	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420		571
421	Safefree (req);	572	Safefree (req);
422	}	573	}
423		574
424	static void req_cancel (aio_req req)	575	static void req_cancel_subs (aio_req grp)
425	{	576	{
426	req->flags |= FLAG_CANCELLED;	577	aio_req sub;
427		578
428	if (req->type == REQ_GROUP)	579	if (grp->type != EIO_GROUP)
		580	return;
		581
		582	SvREFCNT_dec (grp->sv2);
		583	grp->sv2 = 0;
		584
		585	eio_grp_cancel (grp);
		586	}
		587
		588	static void
		589	create_respipe (void)
		590	{
		591	if (s_epipe_renew (&respipe))
		592	croak ("IO::AIO: unable to initialize result pipe");
		593	}
		594
		595	static void poll_wait (void)
		596	{
		597	while (eio_nreqs ())
429	{	598	{
430	aio_req sub;	599	int size;
431		600
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	601	X_LOCK (reslock);
433	req_cancel (sub);	602	size = res_queue.size;
		603	X_UNLOCK (reslock);
		604
		605	if (size)
		606	return;
		607
		608	etp_maybe_start_thread ();
		609
		610	s_epipe_wait (&respipe);
434	}	611	}
435	}	612	}
436		613
437	static int poll_cb ()	614	static int poll_cb (void)
438	{	615	{
439	dSP;
440	int count = 0;
441	int do_croak = 0;
442	aio_req req;
443
444	for (;;)	616	for (;;)
445	{	617	{
446	pthread_mutex_lock (&reslock);	618	int res = eio_poll ();
447	req = reqq_shift (&res_queue);
448		619
449	if (req)	620	if (res > 0)
450	{
451	if (!res_queue.size)
452	{
453	/* read any signals sent by the worker threads */
454	char buf [32];
455	while (read (respipe [0], buf, 32) == 32)
456	;
457	}
458	}
459
460	pthread_mutex_unlock (&reslock);
461
462	if (!req)
463	break;	621	croak (0);
464		622
465	--nreqs;	623	if (!max_outstanding || max_outstanding > eio_nreqs ())
		624	return res;
466		625
467	if (req->type == REQ_QUIT)	626	poll_wait ();
468	started--;
469	else if (req->type == REQ_GROUP && req->length)
470	{
471	req->fd = 1; /* mark request as delayed */
472	continue;
473	}
474	else
475	{
476	if (req->type == REQ_READ)
477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
480	SvREADONLY_off (req->data);
481
482	if (req->statdata)
483	{
484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485	PL_laststatval = req->result;
486	PL_statcache = *(req->statdata);
487	}
488
489	req_invoke (req);
490
491	count++;
492	}
493
494	req_free (req);
495	}	627	}
496
497	return count;
498	}	628	}
499		629
500	static void *aio_proc(void *arg);
501
502	static void start_thread (void)	630	static void atfork_child (void)
503	{	631	{
504	sigset_t fullsigset, oldsigset;	632	create_respipe ();
505	pthread_t tid;
506	pthread_attr_t attr;
507
508	pthread_attr_init (&attr);
509	pthread_attr_setstacksize (&attr, STACKSIZE);
510	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
511
512	sigfillset (&fullsigset);
513	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
514
515	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
516	started++;
517
518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
519	}
520
521	static void req_send (aio_req req)
522	{
523	while (started < wanted && nreqs >= started)
524	start_thread ();
525
526	++nreqs;
527
528	pthread_mutex_lock (&reqlock);
529	reqq_push (&req_queue, req);
530	pthread_cond_signal (&reqwait);
531	pthread_mutex_unlock (&reqlock);
532
533	if (nreqs > max_outstanding)
534	for (;;)
535	{
536	poll_cb ();
537
538	if (nreqs <= max_outstanding)
539	break;
540
541	poll_wait ();
542	}
543	}
544
545	static void end_thread (void)
546	{
547	aio_req req;
548
549	Newz (0, req, 1, aio_cb);
550
551	req->type = REQ_QUIT;
552	req->pri = PRI_MAX + PRI_BIAS;
553
554	req_send (req);
555	}
556
557	static void min_parallel (int nthreads)
558	{
559	if (wanted < nthreads)
560	wanted = nthreads;
561	}
562
563	static void max_parallel (int nthreads)
564	{
565	int cur = started;
566
567	if (wanted > nthreads)
568	wanted = nthreads;
569
570	while (cur > wanted)
571	{
572	end_thread ();
573	cur--;
574	}
575
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}
582
583	static void create_pipe ()
584	{
585	if (pipe (respipe))
586	croak ("unable to initialize result pipe");
587
588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
589	croak ("cannot set result pipe to nonblocking mode");
590
591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
592	croak ("cannot set result pipe to nonblocking mode");
593	}	633	}
594		634
595	/*****************************************************************************/	635	/*****************************************************************************/
596	/* work around various missing functions */
597		636
598	#if !HAVE_PREADWRITE	637	#if !_POSIX_MAPPED_FILES
599	# define pread aio_pread	638	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
600	# define pwrite aio_pwrite	639	# define munmap(addr,length) (errno = ENOSYS, -1)
601		640	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
602	/*	641	# define PROT_NONE 0
603	* make our pread/pwrite safe against themselves, but not against	642	# define PROT_WRITE 0
604	* normal read/write by using a mutex. slows down execution a lot,	643	# define MAP_PRIVATE 0
605	* but that's your problem, not mine.	644	# define MAP_SHARED 0
606	*/	645	# define MAP_FIXED 0
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
608
609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610	{
611	ssize_t res;
612	off_t ooffset;
613
614	pthread_mutex_lock (&preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);
620
621	return res;
622	}
623
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
625	{
626	ssize_t res;
627	off_t ooffset;
628
629	pthread_mutex_lock (&preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);
635
636	return res;
637	}
638	#endif
639
640	#if !HAVE_FDATASYNC
641	# define fdatasync fsync
642	#endif
643
644	#if !HAVE_READAHEAD
645	# define readahead aio_readahead
646
647	static ssize_t readahead (int fd, off_t offset, size_t count)
648	{
649	dBUF;
650
651	while (count > 0)
652	{
653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
654
655	pread (fd, aio_buf, len, offset);
656	offset += len;
657	count -= len;
658	}
659
660	fBUF;
661
662	errno = 0;
663	}
664	#endif
665
666	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r
668
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
670
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
672	{
673	struct dirent *e;
674	int errorno;
675
676	pthread_mutex_lock (&readdirlock);
677
678	e = readdir (dirp);
679	errorno = errno;
680
681	if (e)
682	{
683	*res = ent;
684	strcpy (ent->d_name, e->d_name);
685	}
686	else
687	*res = 0;
688
689	pthread_mutex_unlock (&readdirlock);
690
691	errno = errorno;
692	return e ? 0 : -1;
693	}
694	#endif
695
696	/* sendfile always needs emulation */
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
698	{
699	ssize_t res;
700
701	if (!count)
702	return 0;
703
704	#if HAVE_SENDFILE
705	# if __linux
706	res = sendfile (ofd, ifd, &offset, count);
707
708	# elif __freebsd
709	/*
710	* Of course, the freebsd sendfile is a dire hack with no thoughts
711	* wasted on making it similar to other I/O functions.
712	*/
713	{
714	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716
717	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
719	res = sbytes;
720	}
721
722	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);
724
725	# elif __solaris
726	{
727	struct sendfilevec vec;
728	size_t sbytes;
729
730	vec.sfv_fd = ifd;
731	vec.sfv_flag = 0;
732	vec.sfv_off = offset;
733	vec.sfv_len = count;
734
735	res = sendfilev (ofd, &vec, 1, &sbytes);
736
737	if (res < 0 && sbytes)
738	res = sbytes;
739	}
740
741	# endif	646	#endif
742	#else
743	res = -1;
744	errno = ENOSYS;
745	#endif
746		647
747	if (res < 0	648	#define MMAP_MAGIC PERL_MAGIC_ext
748	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
749	#if __solaris
750	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
751	#endif
752	)
753	)
754	{
755	/* emulate sendfile. this is a major pain in the ass */
756	dBUF;
757		649
758	res = 0;	650	static int
759		651	mmap_free (pTHX_ SV *sv, MAGIC *mg)
760	while (count)
761	{
762	ssize_t cnt;
763
764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
765
766	if (cnt <= 0)
767	{
768	if (cnt && !res) res = -1;
769	break;
770	}
771
772	cnt = write (ofd, aio_buf, cnt);
773
774	if (cnt <= 0)
775	{
776	if (cnt && !res) res = -1;
777	break;
778	}
779
780	offset += cnt;
781	res += cnt;
782	count -= cnt;
783	}
784
785	fBUF;
786	}
787
788	return res;
789	}
790
791	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)
793	{	652	{
794	DIR *dirp;	653	int old_errno = errno;
795	union	654	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
796	{
797	struct dirent d;
798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
799	} *u;
800	struct dirent *entp;
801	char *name, *names;
802	int memlen = 4096;
803	int memofs = 0;
804	int res = 0;
805	int errorno;
806
807	dirp = opendir (path);
808	if (!dirp)
809	return -1;
810
811	u = malloc (sizeof (*u));
812	names = malloc (memlen);
813
814	if (u && names)
815	for (;;)
816	{
817	errno = 0;
818	readdir_r (dirp, &u->d, &entp);
819
820	if (!entp)
821	break;
822
823	name = entp->d_name;
824
825	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
826	{
827	int len = strlen (name) + 1;
828
829	res++;
830
831	while (memofs + len > memlen)
832	{
833	memlen *= 2;
834	names = realloc (names, memlen);
835	if (!names)
836	break;
837	}
838
839	memcpy (names + memofs, name, len);
840	memofs += len;
841	}
842	}
843
844	errorno = errno;	655	errno = old_errno;
845	free (u);
846	closedir (dirp);
847		656
848	if (errorno)	657	mg->mg_obj = 0; /* just in case */
849	{
850	free (names);
851	errno = errorno;
852	res = -1;
853	}
854		658
855	*namesp = (void *)names;	659	SvREADONLY_off (sv);
		660
		661	if (SvPVX (sv) != mg->mg_ptr)
		662	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		663
		664	SvCUR_set (sv, 0);
		665	SvPVX (sv) = 0;
		666	SvOK_off (sv);
		667
856	return res;	668	return 0;
857	}	669	}
		670
		671	static MGVTBL mmap_vtbl = {
		672	0, 0, 0, 0, mmap_free
		673	};
858		674
859	/*****************************************************************************/	675	/*****************************************************************************/
860		676
861	static void *aio_proc (void *thr_arg)	677	static SV *
		678	get_cb (SV *cb_sv)
862	{	679	{
863	aio_req req;	680	SvGETMAGIC (cb_sv);
864	int type;	681	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
865
866	do
867	{
868	pthread_mutex_lock (&reqlock);
869
870	for (;;)
871	{
872	req = reqq_shift (&req_queue);
873
874	if (req)
875	break;
876
877	pthread_cond_wait (&reqwait, &reqlock);
878	}
879
880	pthread_mutex_unlock (&reqlock);
881
882	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884
885	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)
887	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
890
891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
893
894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
897
898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
899	case REQ_CLOSE: req->result = close (req->fd); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
905
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
909
910	case REQ_SLEEP:
911	{
912	struct timeval tv;
913
914	tv.tv_sec = req->fd;
915	tv.tv_usec = req->fd2;
916
917	req->result = select (0, 0, 0, 0, &tv);
918	}
919
920	case REQ_GROUP:
921	case REQ_NOP:
922	case REQ_QUIT:
923	break;
924
925	default:
926	req->result = ENOSYS;
927	break;
928	}
929
930	req->errorno = errno;
931
932	pthread_mutex_lock (&reslock);
933
934	if (!reqq_push (&res_queue, req))
935	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);
937
938	pthread_mutex_unlock (&reslock);
939	}
940	while (type != REQ_QUIT);
941
942	return 0;
943	}
944
945	/*****************************************************************************/
946
947	static void atfork_prepare (void)
948	{
949	pthread_mutex_lock (&reqlock);
950	pthread_mutex_lock (&reslock);
951	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);
953	#endif
954	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);
956	#endif
957	}
958
959	static void atfork_parent (void)
960	{
961	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);
963	#endif
964	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);
966	#endif
967	pthread_mutex_unlock (&reslock);
968	pthread_mutex_unlock (&reqlock);
969	}
970
971	static void atfork_child (void)
972	{
973	aio_req prv;
974
975	started = 0;
976
977	while (prv = reqq_shift (&req_queue))
978	req_free (prv);
979
980	while (prv = reqq_shift (&res_queue))
981	req_free (prv);
982
983	close (respipe [0]);
984	close (respipe [1]);
985	create_pipe ();
986
987	atfork_parent ();
988	}	682	}
989		683
990	#define dREQ \	684	#define dREQ \
		685	SV *cb_cv; \
991	aio_req req; \	686	aio_req req; \
992	int req_pri = next_pri; \	687	int req_pri = next_pri; \
993	next_pri = DEFAULT_PRI + PRI_BIAS; \	688	next_pri = EIO_PRI_DEFAULT; \
994	\	689	\
995	if (SvOK (callback) && !SvROK (callback)) \	690	cb_cv = get_cb (callback); \
996	croak ("callback must be undef or of reference type"); \
997	\	691	\
998	Newz (0, req, 1, aio_cb); \	692	Newz (0, req, 1, eio_req); \
999	if (!req) \	693	if (!req) \
1000	croak ("out of memory during aio_req allocation"); \	694	croak ("out of memory during eio_req allocation"); \
1001	\	695	\
1002	req->callback = newSVsv (callback); \	696	req->callback = SvREFCNT_inc (cb_cv); \
1003	req->pri = req_pri	697	req->pri = req_pri
1004		698
1005	#define REQ_SEND \	699	#define REQ_SEND \
		700	PUTBACK; \
1006	req_send (req); \	701	req_submit (req); \
		702	SPAGAIN; \
1007	\	703	\
1008	if (GIMME_V != G_VOID) \	704	if (GIMME_V != G_VOID) \
1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));	705	XPUSHs (req_sv (req, aio_req_stash));
1010		706
1011	MODULE = IO::AIO PACKAGE = IO::AIO	707	MODULE = IO::AIO PACKAGE = IO::AIO
1012		708
1013	PROTOTYPES: ENABLE	709	PROTOTYPES: ENABLE
1014		710
1015	BOOT:	711	BOOT:
1016	{	712	{
		713	static const struct {
		714	const char *name;
		715	IV iv;
		716	} *civ, const_iv[] = {
		717	# define const_niv(name, value) { # name, (IV) value },
		718	# define const_iv(name) { # name, (IV) name },
		719	# define const_eio(name) { # name, (IV) EIO_ ## name },
		720	const_iv (EXDEV)
		721	const_iv (ENOSYS)
		722	const_iv (O_RDONLY)
		723	const_iv (O_WRONLY)
		724	const_iv (O_RDWR)
		725	const_iv (O_CREAT)
		726	const_iv (O_TRUNC)
		727	const_iv (O_EXCL)
		728	const_iv (O_APPEND)
		729	#ifndef _WIN32
		730	const_iv (S_IFIFO)
		731	#endif
		732	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		733	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		734	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		735	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		736	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		737	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		738
		739	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		740	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		741	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		742	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		743	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		744
		745	const_iv (ST_RDONLY)
		746	const_iv (ST_NOSUID)
		747	const_iv (ST_NODEV)
		748	const_iv (ST_NOEXEC)
		749	const_iv (ST_SYNCHRONOUS)
		750	const_iv (ST_MANDLOCK)
		751	const_iv (ST_WRITE)
		752	const_iv (ST_APPEND)
		753	const_iv (ST_IMMUTABLE)
		754	const_iv (ST_NOATIME)
		755	const_iv (ST_NODIRATIME)
		756	const_iv (ST_RELATIME)
		757
		758	const_iv (PROT_NONE)
		759	const_iv (PROT_EXEC)
		760	const_iv (PROT_READ)
		761	const_iv (PROT_WRITE)
		762
		763	/*const_iv (MAP_FIXED)*/
		764	const_iv (MAP_PRIVATE)
		765	const_iv (MAP_SHARED)
		766	const_iv (MAP_ANONYMOUS)
		767
		768	/* linuxish */
		769	const_iv (MAP_HUGETLB)
		770	const_iv (MAP_LOCKED)
		771	const_iv (MAP_NORESERVE)
		772	const_iv (MAP_POPULATE)
		773	const_iv (MAP_NONBLOCK)
		774
		775	const_eio (MCL_FUTURE)
		776	const_eio (MCL_CURRENT)
		777
		778	const_eio (MS_ASYNC)
		779	const_eio (MS_INVALIDATE)
		780	const_eio (MS_SYNC)
		781
		782	const_eio (MT_MODIFY)
		783
		784	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		785	const_eio (SYNC_FILE_RANGE_WRITE)
		786	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		787
		788	const_eio (READDIR_DENTS)
		789	const_eio (READDIR_DIRS_FIRST)
		790	const_eio (READDIR_STAT_ORDER)
		791	const_eio (READDIR_FOUND_UNKNOWN)
		792
		793	const_eio (DT_UNKNOWN)
		794	const_eio (DT_FIFO)
		795	const_eio (DT_CHR)
		796	const_eio (DT_DIR)
		797	const_eio (DT_BLK)
		798	const_eio (DT_REG)
		799	const_eio (DT_LNK)
		800	const_eio (DT_SOCK)
		801	const_eio (DT_WHT)
		802	};
		803
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	804	aio_stash = gv_stashpv ("IO::AIO" , 1);
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	805	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	806	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1021		807
		808	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		809	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		810
		811	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		812
1022	create_pipe ();	813	create_respipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1024	}
1025		814
		815	if (eio_init (want_poll, done_poll) < 0)
		816	croak ("IO::AIO: unable to initialise eio library");
		817
		818	/* atfork child called in fifo order, so before eio's handler */
		819	X_THREAD_ATFORK (0, 0, atfork_child);
		820	}
		821
1026	void	822	void
1027	min_parallel (nthreads)	823	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	824	PROTOTYPE: $
		825	CODE:
		826	eio_set_max_poll_reqs (nreqs);
1030		827
1031	void	828	void
1032	max_parallel (nthreads)	829	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	830	PROTOTYPE: $
1035
1036	int
1037	max_outstanding (nreqs)
1038	int nreqs
1039	PROTOTYPE: $
1040	CODE:	831	CODE:
1041	RETVAL = max_outstanding;	832	eio_set_max_poll_time (nseconds);
		833
		834	void
		835	min_parallel (int nthreads)
		836	PROTOTYPE: $
		837	CODE:
		838	eio_set_min_parallel (nthreads);
		839
		840	void
		841	max_parallel (int nthreads)
		842	PROTOTYPE: $
		843	CODE:
		844	eio_set_max_parallel (nthreads);
		845
		846	void
		847	max_idle (int nthreads)
		848	PROTOTYPE: $
		849	CODE:
		850	eio_set_max_idle (nthreads);
		851
		852	void
		853	max_outstanding (int maxreqs)
		854	PROTOTYPE: $
		855	CODE:
1042	max_outstanding = nreqs;	856	max_outstanding = maxreqs;
1043		857
1044	void	858	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	859	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1046	SV * pathname
1047	int flags
1048	int mode
1049	SV * callback
1050	PROTOTYPE: $$$;$
1051	PPCODE:	860	PPCODE:
1052	{	861	{
1053	dREQ;	862	dREQ;
1054		863
1055	req->type = REQ_OPEN;	864	req->type = EIO_OPEN;
1056	req->data = newSVsv (pathname);	865	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	866	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	867	req->int1 = flags;
1059	req->mode = mode;	868	req->int2 = mode;
1060		869
1061	REQ_SEND;	870	REQ_SEND;
1062	}	871	}
1063		872
1064	void	873	void
1065	aio_close (fh,callback=&PL_sv_undef)	874	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$
1069	ALIAS:	875	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	876	aio_fsync = EIO_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	877	aio_fdatasync = EIO_FDATASYNC
1073	PPCODE:	878	PPCODE:
1074	{	879	{
		880	int fd = s_fileno_croak (fh, 0);
1075	dREQ;	881	dREQ;
1076		882
1077	req->type = ix;	883	req->type = ix;
1078	req->fh = newSVsv (fh);	884	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	885	req->int1 = fd;
1080		886
1081	REQ_SEND (req);	887	REQ_SEND (req);
1082	}	888	}
1083		889
1084	void	890	void
		891	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		892	PPCODE:
		893	{
		894	int fd = s_fileno_croak (fh, 0);
		895	dREQ;
		896
		897	req->type = EIO_SYNC_FILE_RANGE;
		898	req->sv1 = newSVsv (fh);
		899	req->int1 = fd;
		900	req->offs = offset;
		901	req->size = nbytes;
		902	req->int2 = flags;
		903
		904	REQ_SEND (req);
		905	}
		906
		907	void
		908	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		909	PPCODE:
		910	{
		911	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		912	int fd = s_fileno_croak (fh, 0);
		913	dREQ;
		914
		915	if (close_pipe < 0)
		916	{
		917	int pipefd [2];
		918
		919	if (pipe (pipefd) < 0
		920	|| close (pipefd [1]) < 0
		921	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		922	abort (); /*D*/
		923
		924	close_pipe = pipefd [0];
		925	}
		926
		927	req->type = EIO_DUP2;
		928	req->int1 = close_pipe;
		929	req->sv2 = newSVsv (fh);
		930	req->int2 = fd;
		931
		932	REQ_SEND (req);
		933	}
		934
		935	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	936	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:	937	ALIAS:
1093	aio_read = REQ_READ	938	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	939	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$
1096	PPCODE:	940	PPCODE:
1097	{	941	{
1098	aio_req req;
1099	STRLEN svlen;	942	STRLEN svlen;
		943	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1100	char *svptr = SvPVbyte (data, svlen);	944	char *svptr = SvPVbyte (data, svlen);
1101		945	UV len = SvUV (length);
1102	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);
1104		946
1105	if (dataoffset < 0)	947	if (dataoffset < 0)
1106	dataoffset += svlen;	948	dataoffset += svlen;
1107		949
1108	if (dataoffset < 0 || dataoffset > svlen)	950	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	951	croak ("dataoffset outside of data scalar");
1110		952
1111	if (ix == REQ_WRITE)	953	if (ix == EIO_WRITE)
1112	{	954	{
1113	/* write: check length and adjust. */	955	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	956	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	957	len = svlen - dataoffset;
1116	}	958	}
1117	else	959	else
1118	{	960	{
1119	/* read: grow scalar as necessary */	961	/* read: check type and grow scalar as necessary */
		962	SvUPGRADE (data, SVt_PV);
1120	svptr = SvGROW (data, length + dataoffset);	963	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	964	}
1122
1123	if (length < 0)
1124	croak ("length must not be negative");
1125		965
1126	{	966	{
1127	dREQ;	967	dREQ;
1128		968
1129	req->type = ix;	969	req->type = ix;
1130	req->fh = newSVsv (fh);	970	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	971	req->int1 = fd;
1132	: IoOFP (sv_2io (fh)));	972	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	973	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	974	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	975	req->ptr2 = (char *)svptr + dataoffset;
		976	req->stroffset = dataoffset;
1137		977
1138	if (!SvREADONLY (data))	978	if (!SvREADONLY (data))
1139	{	979	{
1140	SvREADONLY_on (data);	980	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	981	req->flags |= FLAG_SV2_RO_OFF;
1142	}	982	}
1143		983
1144	REQ_SEND;	984	REQ_SEND;
1145	}	985	}
1146	}	986	}
1147		987
1148	void	988	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	989	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1150	SV * out_fh
1151	SV * in_fh
1152	UV in_offset
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$
1156	PPCODE:	990	PPCODE:
1157	{	991	{
		992	SV *data;
		993	dREQ;
		994
		995	req->type = EIO_READLINK;
		996	req->sv1 = newSVsv (path);
		997	req->ptr1 = SvPVbyte_nolen (req->sv1);
		998
		999	REQ_SEND;
		1000	}
		1001
		1002	void
		1003	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1004	PPCODE:
		1005	{
		1006	int ifd = s_fileno_croak (in_fh , 0);
		1007	int ofd = s_fileno_croak (out_fh, 1);
1158	dREQ;	1008	dREQ;
1159		1009
1160	req->type = REQ_SENDFILE;	1010	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1011	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1012	req->int1 = ofd;
1163	req->fh2 = newSVsv (in_fh);	1013	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1014	req->int2 = ifd;
1165	req->offset = in_offset;	1015	req->offs = in_offset;
1166	req->length = length;	1016	req->size = length;
1167		1017
1168	REQ_SEND;	1018	REQ_SEND;
1169	}	1019	}
1170		1020
1171	void	1021	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1022	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$
1178	PPCODE:	1023	PPCODE:
1179	{	1024	{
		1025	int fd = s_fileno_croak (fh, 0);
1180	dREQ;	1026	dREQ;
1181		1027
1182	req->type = REQ_READAHEAD;	1028	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	1029	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1030	req->int1 = fd;
1185	req->offset = offset;	1031	req->offs = offset;
1186	req->length = length;	1032	req->size = length;
1187		1033
1188	REQ_SEND;	1034	REQ_SEND;
1189	}	1035	}
1190		1036
1191	void	1037	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1038	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1039	ALIAS:
1196	aio_stat = REQ_STAT	1040	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	1041	aio_lstat = EIO_LSTAT
		1042	aio_statvfs = EIO_STATVFS
1198	PPCODE:	1043	PPCODE:
1199	{	1044	{
1200	dREQ;	1045	dREQ;
1201		1046
1202	New (0, req->statdata, 1, Stat_t);	1047	req->sv1 = newSVsv (fh_or_path);
1203	if (!req->statdata)
1204	{
1205	req_free (req);
1206	croak ("out of memory during aio_req->statdata allocation");
1207	}
1208		1048
1209	if (SvPOK (fh_or_path))	1049	if (SvPOK (req->sv1))
1210	{	1050	{
1211	req->type = ix;	1051	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	1053	}
1215	else	1054	else
1216	{	1055	{
1217	req->type = REQ_FSTAT;	1056	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1057	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	1058	}
1221		1059
1222	REQ_SEND;	1060	REQ_SEND;
1223	}	1061	}
1224		1062
1225	void	1063	void
		1064	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1065	PPCODE:
		1066	{
		1067	dREQ;
		1068
		1069	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1070	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1071	req->sv1 = newSVsv (fh_or_path);
		1072
		1073	if (SvPOK (req->sv1))
		1074	{
		1075	req->type = EIO_UTIME;
		1076	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1077	}
		1078	else
		1079	{
		1080	req->type = EIO_FUTIME;
		1081	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1082	}
		1083
		1084	REQ_SEND;
		1085	}
		1086
		1087	void
		1088	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1089	PPCODE:
		1090	{
		1091	dREQ;
		1092
		1093	req->sv1 = newSVsv (fh_or_path);
		1094	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1095
		1096	if (SvPOK (req->sv1))
		1097	{
		1098	req->type = EIO_TRUNCATE;
		1099	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1100	}
		1101	else
		1102	{
		1103	req->type = EIO_FTRUNCATE;
		1104	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1105	}
		1106
		1107	REQ_SEND;
		1108	}
		1109
		1110	void
		1111	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1112	ALIAS:
		1113	aio_chmod = EIO_CHMOD
		1114	aio_mkdir = EIO_MKDIR
		1115	PPCODE:
		1116	{
		1117	dREQ;
		1118
		1119	req->int2 = mode;
		1120	req->sv1 = newSVsv (fh_or_path);
		1121
		1122	if (SvPOK (req->sv1))
		1123	{
		1124	req->type = ix;
		1125	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1126	}
		1127	else
		1128	{
		1129	req->type = EIO_FCHMOD;
		1130	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1131	}
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
		1137	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1138	PPCODE:
		1139	{
		1140	dREQ;
		1141
		1142	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1143	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1144	req->sv1 = newSVsv (fh_or_path);
		1145
		1146	if (SvPOK (req->sv1))
		1147	{
		1148	req->type = EIO_CHOWN;
		1149	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1150	}
		1151	else
		1152	{
		1153	req->type = EIO_FCHOWN;
		1154	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1155	}
		1156
		1157	REQ_SEND;
		1158	}
		1159
		1160	void
		1161	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1162	PPCODE:
		1163	{
		1164	dREQ;
		1165
		1166	req->type = EIO_READDIR;
		1167	req->sv1 = newSVsv (pathname);
		1168	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1169	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1170
		1171	if (flags & EIO_READDIR_DENTS)
		1172	req->int1 |= EIO_READDIR_CUSTOM2;
		1173
		1174	REQ_SEND;
		1175	}
		1176
		1177	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1178	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1179	ALIAS:
1230	aio_unlink = REQ_UNLINK	1180	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	1181	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	1182	aio_readdir = EIO_READDIR
1233	PPCODE:	1183	PPCODE:
1234	{	1184	{
1235	dREQ;	1185	dREQ;
1236		1186
1237	req->type = ix;	1187	req->type = ix;
1238	req->data = newSVsv (pathname);	1188	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1189	req->ptr1 = SvPVbyte_nolen (req->sv1);
1240		1190
1241	REQ_SEND;	1191	REQ_SEND;
1242	}	1192	}
1243		1193
1244	void	1194	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1195	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1196	ALIAS:
1250	aio_link = REQ_LINK	1197	aio_link = EIO_LINK
1251	aio_symlink = REQ_SYMLINK	1198	aio_symlink = EIO_SYMLINK
1252	aio_rename = REQ_RENAME	1199	aio_rename = EIO_RENAME
1253	PPCODE:	1200	PPCODE:
1254	{	1201	{
1255	dREQ;	1202	dREQ;
1256		1203
1257	req->type = ix;	1204	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1205	req->sv1 = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1206	req->ptr1 = SvPVbyte_nolen (req->sv1);
1260	req->data = newSVsv (newpath);	1207	req->sv2 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1208	req->ptr2 = SvPVbyte_nolen (req->sv2);
1262		1209
1263	REQ_SEND;	1210	REQ_SEND;
1264	}	1211	}
1265		1212
1266	void	1213	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1214	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1215	PPCODE:
1271	{	1216	{
1272	dREQ;	1217	dREQ;
1273		1218
1274	req->type = REQ_SLEEP;	1219	req->type = EIO_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1220	req->sv1 = newSVsv (pathname);
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1221	req->ptr1 = SvPVbyte_nolen (req->sv1);
1277		1222	req->int2 = (mode_t)mode;
		1223	req->offs = dev;
		1224
1278	REQ_SEND;	1225	REQ_SEND;
1279	}	1226	}
1280		1227
1281	void	1228	void
1282	aio_group (callback=&PL_sv_undef)	1229	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1283	SV * callback	1230	ALIAS:
1284	PROTOTYPE: ;$	1231	aio_mtouch = EIO_MTOUCH
		1232	aio_msync = EIO_MSYNC
1285	PPCODE:	1233	PPCODE:
1286	{	1234	{
		1235	STRLEN svlen;
		1236	char *svptr = SvPVbyte (data, svlen);
		1237	UV len = SvUV (length);
		1238
		1239	if (offset < 0)
		1240	offset += svlen;
		1241
		1242	if (offset < 0 || offset > svlen)
		1243	croak ("offset outside of scalar");
		1244
		1245	if (!SvOK (length) || len + offset > svlen)
		1246	len = svlen - offset;
		1247
		1248	{
		1249	dREQ;
		1250
		1251	req->type = ix;
		1252	req->sv2 = SvREFCNT_inc (data);
		1253	req->ptr2 = (char *)svptr + offset;
		1254	req->size = len;
		1255	req->int1 = flags;
		1256
		1257	REQ_SEND;
		1258	}
		1259	}
		1260
		1261	void
		1262	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1263	PPCODE:
		1264	{
		1265	STRLEN svlen;
		1266	char *svptr = SvPVbyte (data, svlen);
		1267	UV len = SvUV (length);
		1268
		1269	if (offset < 0)
		1270	offset += svlen;
		1271
		1272	if (offset < 0 || offset > svlen)
		1273	croak ("offset outside of scalar");
		1274
		1275	if (!SvOK (length) || len + offset > svlen)
		1276	len = svlen - offset;
		1277
		1278	{
		1279	dREQ;
		1280
		1281	req->type = EIO_MLOCK;
		1282	req->sv2 = SvREFCNT_inc (data);
		1283	req->ptr2 = (char *)svptr + offset;
		1284	req->size = len;
		1285
		1286	REQ_SEND;
		1287	}
		1288	}
		1289
		1290	void
		1291	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1292	PPCODE:
		1293	{
		1294	dREQ;
		1295
		1296	req->type = EIO_MLOCKALL;
		1297	req->int1 = flags;
		1298
		1299	REQ_SEND;
		1300	}
		1301
		1302	void
		1303	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1304	PPCODE:
		1305	{
1287	dREQ;	1306	dREQ;
1288		1307
		1308	req->type = EIO_BUSY;
		1309	req->nv1 = delay < 0. ? 0. : delay;
		1310
		1311	REQ_SEND;
		1312	}
		1313
		1314	void
		1315	aio_group (SV *callback=&PL_sv_undef)
		1316	PPCODE:
		1317	{
		1318	dREQ;
		1319
1289	req->type = REQ_GROUP;	1320	req->type = EIO_GROUP;
		1321
1290	req_send (req);	1322	req_submit (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1323	XPUSHs (req_sv (req, aio_grp_stash));
1293	}	1324	}
1294		1325
1295	void	1326	void
1296	aio_nop (callback=&PL_sv_undef)	1327	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback	1328	ALIAS:
		1329	aio_nop = EIO_NOP
		1330	aio_sync = EIO_SYNC
1298	PPCODE:	1331	PPCODE:
1299	{	1332	{
1300	dREQ;	1333	dREQ;
1301		1334
1302	req->type = REQ_NOP;	1335	req->type = ix;
1303		1336
1304	REQ_SEND;	1337	REQ_SEND;
1305	}	1338	}
1306		1339
1307	void	1340	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1341	aioreq_pri (int pri = 0)
1309	CODE:	1342	CODE:
		1343	RETVAL = next_pri;
		1344	if (items > 0)
		1345	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1346	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1347	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1348	next_pri = pri;
		1349	}
		1350	OUTPUT:
		1351	RETVAL
1313		1352
1314	void	1353	void
1315	aioreq_nice (int nice = 0)	1354	aioreq_nice (int nice = 0)
1316	CODE:	1355	CODE:
1317	nice = next_pri - nice;	1356	nice = next_pri - nice;
1318	if (nice < PRI_MIN) nice = PRI_MIN;	1357	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1319	if (nice > PRI_MAX) nice = PRI_MAX;	1358	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1320	next_pri = nice + PRI_BIAS;	1359	next_pri = nice;
1321		1360
1322	void	1361	void
1323	flush ()	1362	flush ()
1324	PROTOTYPE:
1325	CODE:	1363	CODE:
1326	while (nreqs)	1364	while (eio_nreqs ())
1327	{	1365	{
1328	poll_wait ();	1366	poll_wait ();
1329	poll_cb ();	1367	poll_cb ();
1330	}	1368	}
1331		1369
1332	void	1370	int
1333	poll()	1371	poll ()
1334	PROTOTYPE:
1335	CODE:	1372	CODE:
1336	if (nreqs)
1337	{
1338	poll_wait ();	1373	poll_wait ();
1339	poll_cb ();	1374	RETVAL = poll_cb ();
1340	}
1341
1342	int
1343	poll_fileno()
1344	PROTOTYPE:
1345	CODE:
1346	RETVAL = respipe [0];
1347	OUTPUT:	1375	OUTPUT:
1348	RETVAL	1376	RETVAL
1349		1377
1350	int	1378	int
		1379	poll_fileno ()
		1380	CODE:
		1381	RETVAL = s_epipe_fd (&respipe);
		1382	OUTPUT:
		1383	RETVAL
		1384
		1385	int
1351	poll_cb(...)	1386	poll_cb (...)
1352	PROTOTYPE:	1387	PROTOTYPE:
1353	CODE:	1388	CODE:
1354	RETVAL = poll_cb ();	1389	RETVAL = poll_cb ();
1355	OUTPUT:	1390	OUTPUT:
1356	RETVAL	1391	RETVAL
1357		1392
1358	void	1393	void
1359	poll_wait()	1394	poll_wait ()
1360	PROTOTYPE:
1361	CODE:	1395	CODE:
1362	if (nreqs)
1363	poll_wait ();	1396	poll_wait ();
1364		1397
1365	int	1398	int
1366	nreqs()	1399	nreqs ()
1367	PROTOTYPE:
1368	CODE:	1400	CODE:
1369	RETVAL = nreqs;	1401	RETVAL = eio_nreqs ();
1370	OUTPUT:	1402	OUTPUT:
1371	RETVAL	1403	RETVAL
1372		1404
		1405	int
		1406	nready ()
		1407	CODE:
		1408	RETVAL = eio_nready ();
		1409	OUTPUT:
		1410	RETVAL
		1411
		1412	int
		1413	npending ()
		1414	CODE:
		1415	RETVAL = eio_npending ();
		1416	OUTPUT:
		1417	RETVAL
		1418
		1419	int
		1420	nthreads ()
		1421	CODE:
		1422	RETVAL = eio_nthreads ();
		1423	OUTPUT:
		1424	RETVAL
		1425
		1426	int
		1427	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1428	CODE:
		1429	RETVAL = posix_fadvise (fh, offset, length, advice);
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	ssize_t
		1434	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1435	CODE:
		1436	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1437	OUTPUT:
		1438	RETVAL
		1439
		1440	void
		1441	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1442	PPCODE:
		1443	sv_unmagic (scalar, MMAP_MAGIC);
		1444	{
		1445	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1446	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1447	if (addr == (void *)-1)
		1448	XSRETURN_NO;
		1449
		1450	sv_force_normal (scalar);
		1451
		1452	/* we store the length in mg_obj, as namlen is I32 :/ */
		1453	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1454	->mg_obj = (SV *)length;
		1455
		1456	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1457
		1458	if (!(prot & PROT_WRITE))
		1459	SvREADONLY_on (scalar);
		1460
		1461	if (SvLEN (scalar))
		1462	Safefree (SvPVX (scalar));
		1463
		1464	SvPVX (scalar) = (char *)addr;
		1465	SvCUR_set (scalar, length);
		1466	SvLEN_set (scalar, 0);
		1467	SvPOK_only (scalar);
		1468
		1469	XSRETURN_YES;
		1470	}
		1471
		1472	void
		1473	munmap (SV *scalar)
		1474	CODE:
		1475	sv_unmagic (scalar, MMAP_MAGIC);
		1476
		1477	int
		1478	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1479	ALIAS:
		1480	mprotect = 1
		1481	CODE:
		1482	{
		1483	STRLEN svlen;
		1484	void *addr = SvPVbyte (scalar, svlen);
		1485	size_t len = SvUV (length);
		1486
		1487	if (offset < 0)
		1488	offset += svlen;
		1489
		1490	if (offset < 0 || offset > svlen)
		1491	croak ("offset outside of scalar");
		1492
		1493	if (!SvOK (length) || len + offset > svlen)
		1494	len = svlen - offset;
		1495
		1496	addr = (void *)(((intptr_t)addr) + offset);
		1497	eio_page_align (&addr, &len);
		1498
		1499	switch (ix)
		1500	{
		1501	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1502	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1503	}
		1504	}
		1505	OUTPUT:
		1506	RETVAL
		1507
		1508	int
		1509	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1510	CODE:
		1511	{
		1512	STRLEN svlen;
		1513	void *addr = SvPVbyte (scalar, svlen);
		1514	size_t len = SvUV (length);
		1515
		1516	if (offset < 0)
		1517	offset += svlen;
		1518
		1519	if (offset < 0 || offset > svlen)
		1520	croak ("offset outside of scalar");
		1521
		1522	if (!SvOK (length) || len + offset > svlen)
		1523	len = svlen - offset;
		1524
		1525	addr = (void *)(((intptr_t)addr) + offset);
		1526	eio_page_align (&addr, &len);
		1527	#if _POSIX_MEMLOCK
		1528	RETVAL = munlock (addr, len);
		1529	#else
		1530	RETVAL = ((errno = ENOSYS), -1);
		1531	#endif
		1532	}
		1533	OUTPUT:
		1534	RETVAL
		1535
		1536	int
		1537	munlockall ()
		1538	CODE:
		1539	#if _POSIX_MEMLOCK
		1540	munlockall ();
		1541	#else
		1542	RETVAL = -1;
		1543	errno = ENOSYS;
		1544	#endif
		1545	OUTPUT:
		1546	RETVAL
		1547
		1548	void _on_next_submit (SV *cb)
		1549	CODE:
		1550	SvREFCNT_dec (on_next_submit);
		1551	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1552
1373	PROTOTYPES: DISABLE	1553	PROTOTYPES: DISABLE
1374		1554
1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1555	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376		1556
1377	void	1557	void
1378	cancel (aio_req_ornot req)	1558	cancel (aio_req_ornot req)
1379	CODE:	1559	CODE:
1380	req_cancel (req);	1560	eio_cancel (req);
1381		1561
1382	void	1562	void
1383	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1563	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1384	CODE:	1564	PPCODE:
		1565	{
		1566	if (GIMME_V != G_VOID)
		1567	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1568
		1569	if (items > 1)
		1570	{
		1571	SV *cb_cv =get_cb (callback);
		1572
1385	SvREFCNT_dec (req->callback);	1573	SvREFCNT_dec (req->callback);
1386	req->callback = newSVsv (callback);	1574	req->callback = SvREFCNT_inc (cb_cv);
		1575	}
		1576	}
1387		1577
1388	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1578	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1389		1579
1390	void	1580	void
1391	add (aio_req grp, ...)	1581	add (aio_req grp, ...)
1392	PPCODE:	1582	PPCODE:
1393	{	1583	{
1394	int i;	1584	int i;
1395	aio_req req;
1396		1585
1397	if (grp->fd == 2)	1586	if (grp->int1 == 2)
1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1587	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399		1588
1400	for (i = 1; i < items; ++i )	1589	for (i = 1; i < items; ++i )
1401	{	1590	{
		1591	aio_req req;
		1592
1402	if (GIMME_V != G_VOID)	1593	if (GIMME_V != G_VOID)
1403	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1594	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1404		1595
1405	req = SvAIO_REQ (ST (i));	1596	req = SvAIO_REQ (ST (i));
1406		1597
1407	if (req)	1598	if (req)
1408	{	1599	eio_grp_add (grp, req);
1409	++grp->length;
1410	req->grp = grp;
1411
1412	req->grp_prev = 0;
1413	req->grp_next = grp->grp_first;
1414
1415	if (grp->grp_first)
1416	grp->grp_first->grp_prev = req;
1417
1418	grp->grp_first = req;
1419	}
1420	}	1600	}
1421	}	1601	}
		1602
		1603	void
		1604	cancel_subs (aio_req_ornot req)
		1605	CODE:
		1606	req_cancel_subs (req);
1422		1607
1423	void	1608	void
1424	result (aio_req grp, ...)	1609	result (aio_req grp, ...)
1425	CODE:	1610	CODE:
1426	{	1611	{
1427	int i;	1612	int i;
		1613	AV *av;
		1614
		1615	grp->errorno = errno;
		1616
1428	AV *av = newAV ();	1617	av = newAV ();
		1618	av_extend (av, items - 1);
1429		1619
1430	for (i = 1; i < items; ++i )	1620	for (i = 1; i < items; ++i )
1431	av_push (av, newSVsv (ST (i)));	1621	av_push (av, newSVsv (ST (i)));
1432		1622
1433	SvREFCNT_dec (grp->data);	1623	SvREFCNT_dec (grp->sv1);
1434	grp->data = (SV *)av;	1624	grp->sv1 = (SV *)av;
1435	}	1625	}
		1626
		1627	void
		1628	errno (aio_req grp, int errorno = errno)
		1629	CODE:
		1630	grp->errorno = errorno;
1436		1631
1437	void	1632	void
1438	limit (aio_req grp, int limit)	1633	limit (aio_req grp, int limit)
1439	CODE:	1634	CODE:
1440	grp->fd2 = limit;	1635	eio_grp_limit (grp, limit);
1441	aio_grp_feed (grp);
1442		1636
1443	void	1637	void
1444	feed (aio_req grp, SV *callback=&PL_sv_undef)	1638	feed (aio_req grp, SV *callback=&PL_sv_undef)
1445	CODE:	1639	CODE:
1446	{	1640	{
1447	SvREFCNT_dec (grp->fh2);	1641	SvREFCNT_dec (grp->sv2);
1448	grp->fh2 = newSVsv (callback);	1642	grp->sv2 = newSVsv (callback);
		1643	grp->feed = aio_grp_feed;
1449		1644
1450	if (grp->fd2 <= 0)	1645	if (grp->int2 <= 0)
1451	grp->fd2 = 2;	1646	grp->int2 = 2;
1452		1647
1453	aio_grp_feed (grp);	1648	eio_grp_limit (grp, grp->int2);
1454	}	1649	}
1455		1650

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