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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 1.180 by root, Fri Feb 11 00:05:17 2011 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_MEMLOCK_RANGE || _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/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 S_IFIFO
		214	# define S_IFIFO 0
		215	#endif
		216	#ifndef S_IFCHR
		217	# define S_IFCHR 0
		218	#endif
		219	#ifndef S_IFBLK
		220	# define S_IFBLK 0
		221	#endif
		222	#ifndef S_IFLNK
		223	# define S_IFLNK 0
		224	#endif
		225	#ifndef S_IFREG
		226	# define S_IFREG 0
		227	#endif
		228	#ifndef S_IFDIR
		229	# define S_IFDIR 0
		230	#endif
		231	#ifndef S_IFWHT
		232	# define S_IFWHT 0
		233	#endif
		234	#ifndef S_IFSOCK
		235	# define S_IFSOCK 0
		236	#endif
		237
		238	#ifndef MAP_ANONYMOUS
		239	# ifdef MAP_ANON
		240	# define MAP_ANONYMOUS MAP_ANON
39	# else	241	# else
40	# error sendfile support requested but not available	242	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
41	# endif	243	# endif
42	#endif	244	#endif
43		245	#ifndef MAP_HUGETLB
44	/* used for struct dirent, AIX doesn't provide it */	246	# define MAP_HUGETLB 0
45	#ifndef NAME_MAX
46	# define NAME_MAX 4096
47	#endif	247	#endif
48		248	#ifndef MAP_LOCKED
49	#if __ia64	249	# 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	250	#endif
		251	#ifndef MAP_NORESERVE
		252	# define MAP_NORESERVE 0
		253	#endif
		254	#ifndef MAP_POPULATE
		255	# define MAP_POPULATE 0
		256	#endif
		257	#ifndef MAP_NONBLOCK
		258	# define MAP_NONBLOCK 0
		259	#endif
56		260
57	/* buffer size for various temporary buffers */	261	#ifndef makedev
58	#define AIO_BUFSIZE 65536	262	# define makedev(maj,min) (((maj) << 8) | (min))
		263	#endif
		264	#ifndef major
		265	# define major(dev) ((dev) >> 8)
		266	#endif
		267	#ifndef minor
		268	# define minor(dev) ((dev) & 0xff)
		269	#endif
59		270
60	#define dBUF \	271	#ifndef PAGESIZE
61	char *aio_buf = malloc (AIO_BUFSIZE); \	272	# define PAGESIZE sysconf (_SC_PAGESIZE)
62	if (!aio_buf) \	273	#endif
63	return -1;
64		274
65	#define fBUF free (aio_buf)	275	static int req_invoke (eio_req *req);
		276	#define EIO_FINISH(req) req_invoke (req)
		277	static void req_destroy (eio_req *grp);
		278	#define EIO_DESTROY(req) req_destroy (req)
66		279
67	enum {	280	enum {
68	REQ_QUIT,	281	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	};	282	};
80		283
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	284	#include "libeio/eio.c"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		285
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;	286	typedef eio_req *aio_req;
114	typedef aio_cb *aio_req_ornot;	287	typedef eio_req *aio_req_ornot;
115		288
116	enum {	289	static SV *on_next_submit;
117	PRI_MIN = -4,	290	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;	291	static int max_outstanding;
130	static int respipe [2];
131		292
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	293	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		294
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	295	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);	296	static void req_cancel (aio_req req);
197	static void req_free (aio_req req);	297
		298	static void want_poll (void)
		299	{
		300	/* write a dummy byte to the pipe so fh becomes ready */
		301	s_epipe_signal (&respipe);
		302	}
		303
		304	static void done_poll (void)
		305	{
		306	/* read any signals sent by the worker threads */
		307	s_epipe_drain (&respipe);
		308	}
198		309
199	/* must be called at most once */	310	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	311	static SV *req_sv (aio_req req, HV *stash)
201	{	312	{
202	if (!req->self)	313	if (!req->self)
203	{	314	{
204	req->self = (SV *)newHV ();	315	req->self = (SV *)newHV ();
205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	316	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
206	}	317	}
207		318
208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	319	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
209	}	320	}
210		321
211	static aio_req SvAIO_REQ (SV *sv)	322	static aio_req SvAIO_REQ (SV *sv)
212	{	323	{
213	MAGIC *mg;	324	MAGIC *mg;
214		325
215	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	326	if (!SvROK (sv)
		327	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		328	&& SvSTASH (SvRV (sv)) != aio_req_stash
		329	&& !sv_derived_from (sv, "IO::AIO::REQ")))
216	croak ("object of class " AIO_REQ_KLASS " expected");	330	croak ("object of class IO::AIO::REQ expected");
217		331
218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	332	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
219		333
220	return mg ? (aio_req)mg->mg_ptr : 0;	334	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	335	}
222		336
223	static void aio_grp_feed (aio_req grp)	337	static void aio_grp_feed (aio_req grp)
224	{	338	{
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	339	if (grp->sv2 && SvOK (grp->sv2))
226	{	340	{
227	int old_len = grp->length;
228
229	if (grp->fh2 && SvOK (grp->fh2))
230	{
231	dSP;	341	dSP;
232		342
233	ENTER;	343	ENTER;
234	SAVETMPS;	344	SAVETMPS;
235	PUSHMARK (SP);	345	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	346	XPUSHs (req_sv (grp, aio_grp_stash));
237	PUTBACK;	347	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	348	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	349	SPAGAIN;
240	FREETMPS;	350	FREETMPS;
241	LEAVE;	351	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	}	352	}
252	}	353	}
253		354
254	static void aio_grp_dec (aio_req grp)	355	static void req_submit (eio_req *req)
255	{	356	{
256	--grp->length;	357	eio_submit (req);
257		358
258	/* call feeder, if applicable */	359	if (expect_false (on_next_submit))
259	aio_grp_feed (grp);
260
261	/* finish, if done */
262	if (!grp->length && grp->fd)
263	{	360	{
264	req_invoke (grp);	361	dSP;
265	req_free (grp);	362	SV *cb = sv_2mortal (on_next_submit);
		363
		364	on_next_submit = 0;
		365
		366	PUSHMARK (SP);
		367	PUTBACK;
		368	call_sv (cb, G_DISCARD | G_EVAL);
266	}	369	}
267	}	370	}
268		371
269	static void poll_wait ()	372	static int req_invoke (eio_req *req)
270	{	373	{
271	fd_set rfd;	374	if (req->flags & FLAG_SV2_RO_OFF)
		375	SvREADONLY_off (req->sv2);
272		376
273	while (nreqs)	377	if (!EIO_CANCELLED (req) && req->callback)
274	{	378	{
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;	379	dSP;
297		380	static SV *sv_result_cache; /* caches the result integer SV */
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	381	SV *sv_result;
299	{
300	errno = req->errorno;
301		382
302	ENTER;	383	ENTER;
303	SAVETMPS;	384	SAVETMPS;
304	PUSHMARK (SP);	385	PUSHMARK (SP);
305	EXTEND (SP, 1);	386	EXTEND (SP, 1);
306		387
		388	/* do not recreate the result IV from scratch each time */
		389	if (expect_true (sv_result_cache))
		390	{
		391	sv_result = sv_result_cache; sv_result_cache = 0;
		392	SvIV_set (sv_result, req->result);
		393	SvIOK_only (sv_result);
		394	}
		395	else
		396	{
		397	sv_result = newSViv (req->result);
		398	SvREADONLY_on (sv_result);
		399	}
		400
307	switch (req->type)	401	switch (req->type)
308	{	402	{
309	case REQ_READDIR:	403	case EIO_READDIR:
310	{	404	{
311	SV *rv = &PL_sv_undef;	405	SV *rv = &PL_sv_undef;
312		406
313	if (req->result >= 0)	407	if (req->result >= 0)
314	{	408	{
		409	int i;
315	char *buf = req->data2ptr;	410	char *names = (char *)req->ptr2;
		411	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
316	AV *av = newAV ();	412	AV *av = newAV ();
317		413
318	while (req->result)	414	av_extend (av, req->result - 1);
		415
		416	for (i = 0; i < req->result; ++i)
319	{	417	{
		418	if (req->int1 & EIO_READDIR_DENTS)
		419	{
		420	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		421
		422	if (req->int1 & EIO_READDIR_CUSTOM2)
		423	{
		424	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		425	AV *avent = newAV ();
		426
		427	av_extend (avent, 2);
		428
		429	if (!sv_type [ent->type])
		430	{
		431	sv_type [ent->type] = newSViv (ent->type);
		432	SvREADONLY_on (sv_type [ent->type]);
		433	}
		434
		435	av_store (avent, 0, namesv);
		436	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		437	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		438
		439	av_store (av, i, newRV_noinc ((SV *)avent));
		440	}
		441	else
		442	av_store (av, i, namesv);
		443
		444	++ent;
		445	}
		446	else
		447	{
320	SV *sv = newSVpv (buf, 0);	448	SV *name = newSVpv (names, 0);
321
322	av_push (av, sv);	449	av_store (av, i, name);
323	buf += SvCUR (sv) + 1;	450	names += SvCUR (name) + 1;
324	req->result--;	451	}
325	}	452	}
326		453
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	454	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	455	}
329		456
330	PUSHs (rv);	457	PUSHs (rv);
		458
		459	if (req->int1 & EIO_READDIR_CUSTOM1)
		460	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
331	}	461	}
332	break;	462	break;
333		463
334	case REQ_OPEN:	464	case EIO_OPEN:
335	{	465	{
336	/* convert fd to fh */	466	/* convert fd to fh */
337	SV *fh;	467	SV *fh = &PL_sv_undef;
338		468
339	PUSHs (sv_2mortal (newSViv (req->result)));	469	if (req->result >= 0)
340	PUTBACK;	470	{
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	471	GV *gv = (GV *)sv_newmortal ();
342	SPAGAIN;	472	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		473	char sym [64];
		474	int symlen;
		475
		476	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		477	gv_init (gv, aio_stash, sym, symlen, 0);
343		478
344	fh = SvREFCNT_inc (POPs);	479	symlen = snprintf (
		480	sym,
		481	sizeof (sym),
		482	"%s&=%d",
		483	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		484	(int)req->result
		485	);
345		486
		487	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		488	fh = (SV *)gv;
		489	}
		490
346	PUSHMARK (SP);	491	PUSHs (fh);
347	XPUSHs (sv_2mortal (fh));
348	}	492	}
349	break;	493	break;
350		494
		495	case EIO_STATVFS:
		496	case EIO_FSTATVFS:
		497	{
		498	SV *rv = &PL_sv_undef;
		499
		500	if (req->result >= 0)
		501	{
		502	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		503	HV *hv = newHV ();
		504
		505	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		506
		507	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		508	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		509	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		510	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		511	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		512	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		513	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		514	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		515	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		516	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		517	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		518	}
		519
		520	PUSHs (rv);
		521	}
		522
		523	break;
		524
351	case REQ_GROUP:	525	case EIO_GROUP:
352	req->fd = 2; /* mark group as finished */	526	req->int1 = 2; /* mark group as finished */
353		527
354	if (req->data)	528	if (req->sv1)
355	{	529	{
356	int i;	530	int i;
357	AV *av = (AV *)req->data;	531	AV *av = (AV *)req->sv1;
358		532
359	EXTEND (SP, AvFILL (av) + 1);	533	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	534	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	535	PUSHs (*av_fetch (av, i, 0));
362	}	536	}
363	break;	537	break;
364		538
365	case REQ_NOP:	539	case EIO_NOP:
366	case REQ_SLEEP:	540	case EIO_BUSY:
367	break;	541	break;
368		542
		543	case EIO_READLINK:
		544	if (req->result > 0)
		545	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		546	break;
		547
		548	case EIO_STAT:
		549	case EIO_LSTAT:
		550	case EIO_FSTAT:
		551	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		552	PL_laststatval = req->result;
		553	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		554	PUSHs (sv_result);
		555	break;
		556
		557	case EIO_READ:
		558	{
		559	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		560	*SvEND (req->sv2) = 0;
		561	SvPOK_only (req->sv2);
		562	SvSETMAGIC (req->sv2);
		563	PUSHs (sv_result);
		564	}
		565	break;
		566
		567	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		568	if (req->result > 0)
		569	SvIV_set (sv_result, 0);
		570	/* FALLTHROUGH */
		571
369	default:	572	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	573	PUSHs (sv_result);
371	break;	574	break;
372	}	575	}
373		576
		577	errno = req->errorno;
374		578
375	PUTBACK;	579	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	580	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
377	SPAGAIN;	581	SPAGAIN;
		582
		583	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		584	SvREFCNT_dec (sv_result);
		585	else
		586	sv_result_cache = sv_result;
378		587
379	FREETMPS;	588	FREETMPS;
380	LEAVE;	589	LEAVE;
		590
		591	PUTBACK;
381	}	592	}
382		593
383	if (req->grp)	594	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	}	595	}
403		596
404	static void req_free (aio_req req)	597	static void req_destroy (aio_req req)
405	{	598	{
406	if (req->self)	599	if (req->self)
407	{	600	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	601	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	602	SvREFCNT_dec (req->self);
410	}	603	}
411		604
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	605	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	606	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	607	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417
418	if (req->type == REQ_READDIR && req->result >= 0)
419	free (req->data2ptr);
420		608
421	Safefree (req);	609	Safefree (req);
422	}	610	}
423		611
424	static void req_cancel (aio_req req)	612	static void req_cancel_subs (aio_req grp)
425	{	613	{
426	req->flags |= FLAG_CANCELLED;	614	aio_req sub;
427		615
428	if (req->type == REQ_GROUP)	616	if (grp->type != EIO_GROUP)
		617	return;
		618
		619	SvREFCNT_dec (grp->sv2);
		620	grp->sv2 = 0;
		621
		622	eio_grp_cancel (grp);
		623	}
		624
		625	static void
		626	create_respipe (void)
		627	{
		628	if (s_epipe_renew (&respipe))
		629	croak ("IO::AIO: unable to initialize result pipe");
		630	}
		631
		632	static void poll_wait (void)
		633	{
		634	while (eio_nreqs ())
429	{	635	{
430	aio_req sub;	636	int size;
431		637
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	638	X_LOCK (reslock);
433	req_cancel (sub);	639	size = res_queue.size;
		640	X_UNLOCK (reslock);
		641
		642	if (size)
		643	return;
		644
		645	etp_maybe_start_thread ();
		646
		647	s_epipe_wait (&respipe);
434	}	648	}
435	}	649	}
436		650
437	static int poll_cb ()	651	static int poll_cb (void)
438	{	652	{
439	dSP;
440	int count = 0;
441	int do_croak = 0;
442	aio_req req;
443
444	for (;;)	653	for (;;)
445	{	654	{
446	pthread_mutex_lock (&reslock);	655	int res = eio_poll ();
447	req = reqq_shift (&res_queue);
448		656
449	if (req)	657	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;	658	croak (0);
464		659
465	--nreqs;	660	if (!max_outstanding || max_outstanding > eio_nreqs ())
		661	return res;
466		662
467	if (req->type == REQ_QUIT)	663	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	}	664	}
496
497	return count;
498	}	665	}
499		666
500	static void *aio_proc(void *arg);
501
502	static void start_thread (void)	667	static void atfork_child (void)
503	{	668	{
504	sigset_t fullsigset, oldsigset;	669	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	}	670	}
594		671
595	/*****************************************************************************/	672	/*****************************************************************************/
596	/* work around various missing functions */
597		673
598	#if !HAVE_PREADWRITE	674	#if !_POSIX_MAPPED_FILES
599	# define pread aio_pread	675	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
600	# define pwrite aio_pwrite	676	# define munmap(addr,length) (errno = ENOSYS, -1)
601
602	/*
603	* make our pread/pwrite safe against themselves, but not against
604	* normal read/write by using a mutex. slows down execution a lot,
605	* but that's your problem, not mine.
606	*/
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	677	#endif
742	#else
743	res = -1;
744	errno = ENOSYS;
745	#endif
746		678
747	if (res < 0	679	#if !_POSIX_MEMORY_PROTECTION
748	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	680	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
749	#if __solaris	681	# define PROT_NONE 0
750	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	682	# define PROT_WRITE 0
		683	# define MAP_PRIVATE 0
		684	# define MAP_SHARED 0
		685	# define MAP_FIXED 0
751	#endif	686	#endif
752	)
753	)
754	{
755	/* emulate sendfile. this is a major pain in the ass */
756	dBUF;
757		687
758	res = 0;	688	#define MMAP_MAGIC PERL_MAGIC_ext
759		689
760	while (count)	690	static int
761	{	691	mmap_free (pTHX_ SV *sv, MAGIC *mg)
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	{	692	{
794	DIR *dirp;	693	int old_errno = errno;
795	union	694	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;	695	errno = old_errno;
845	free (u);
846	closedir (dirp);
847		696
848	if (errorno)	697	mg->mg_obj = 0; /* just in case */
849	{
850	free (names);
851	errno = errorno;
852	res = -1;
853	}
854		698
855	*namesp = (void *)names;	699	SvREADONLY_off (sv);
		700
		701	if (SvPVX (sv) != mg->mg_ptr)
		702	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		703
		704	SvCUR_set (sv, 0);
		705	SvPVX (sv) = 0;
		706	SvOK_off (sv);
		707
856	return res;	708	return 0;
857	}	709	}
		710
		711	static MGVTBL mmap_vtbl = {
		712	0, 0, 0, 0, mmap_free
		713	};
858		714
859	/*****************************************************************************/	715	/*****************************************************************************/
860		716
861	static void *aio_proc (void *thr_arg)	717	static SV *
		718	get_cb (SV *cb_sv)
862	{	719	{
863	aio_req req;	720	SvGETMAGIC (cb_sv);
864	int type;	721	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	}	722	}
989		723
990	#define dREQ \	724	#define dREQ \
		725	SV *cb_cv; \
991	aio_req req; \	726	aio_req req; \
992	int req_pri = next_pri; \	727	int req_pri = next_pri; \
993	next_pri = DEFAULT_PRI + PRI_BIAS; \	728	next_pri = EIO_PRI_DEFAULT; \
994	\	729	\
995	if (SvOK (callback) && !SvROK (callback)) \	730	cb_cv = get_cb (callback); \
996	croak ("callback must be undef or of reference type"); \
997	\	731	\
998	Newz (0, req, 1, aio_cb); \	732	Newz (0, req, 1, eio_req); \
999	if (!req) \	733	if (!req) \
1000	croak ("out of memory during aio_req allocation"); \	734	croak ("out of memory during eio_req allocation"); \
1001	\	735	\
1002	req->callback = newSVsv (callback); \	736	req->callback = SvREFCNT_inc (cb_cv); \
1003	req->pri = req_pri	737	req->pri = req_pri
1004		738
1005	#define REQ_SEND \	739	#define REQ_SEND \
		740	PUTBACK; \
1006	req_send (req); \	741	req_submit (req); \
		742	SPAGAIN; \
1007	\	743	\
1008	if (GIMME_V != G_VOID) \	744	if (GIMME_V != G_VOID) \
1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));	745	XPUSHs (req_sv (req, aio_req_stash));
1010		746
1011	MODULE = IO::AIO PACKAGE = IO::AIO	747	MODULE = IO::AIO PACKAGE = IO::AIO
1012		748
1013	PROTOTYPES: ENABLE	749	PROTOTYPES: ENABLE
1014		750
1015	BOOT:	751	BOOT:
1016	{	752	{
		753	static const struct {
		754	const char *name;
		755	IV iv;
		756	} *civ, const_iv[] = {
		757	# define const_niv(name, value) { # name, (IV) value },
		758	# define const_iv(name) { # name, (IV) name },
		759	# define const_eio(name) { # name, (IV) EIO_ ## name },
		760	const_iv (EXDEV)
		761	const_iv (ENOSYS)
		762	const_iv (O_RDONLY)
		763	const_iv (O_WRONLY)
		764	const_iv (O_RDWR)
		765	const_iv (O_CREAT)
		766	const_iv (O_TRUNC)
		767	const_iv (O_EXCL)
		768	const_iv (O_APPEND)
		769
		770	const_iv (S_IFIFO)
		771	const_iv (S_IFCHR)
		772	const_iv (S_IFBLK)
		773	const_iv (S_IFLNK)
		774	const_iv (S_IFREG)
		775	const_iv (S_IFDIR)
		776	const_iv (S_IFWHT)
		777	const_iv (S_IFSOCK)
		778	const_iv (S_IFMT)
		779
		780	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		781	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		782	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		783	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		784	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		785	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		786
		787	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		788	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		789	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		790	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		791	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		792
		793	const_iv (ST_RDONLY)
		794	const_iv (ST_NOSUID)
		795	const_iv (ST_NODEV)
		796	const_iv (ST_NOEXEC)
		797	const_iv (ST_SYNCHRONOUS)
		798	const_iv (ST_MANDLOCK)
		799	const_iv (ST_WRITE)
		800	const_iv (ST_APPEND)
		801	const_iv (ST_IMMUTABLE)
		802	const_iv (ST_NOATIME)
		803	const_iv (ST_NODIRATIME)
		804	const_iv (ST_RELATIME)
		805
		806	const_iv (PROT_NONE)
		807	const_iv (PROT_EXEC)
		808	const_iv (PROT_READ)
		809	const_iv (PROT_WRITE)
		810
		811	/*const_iv (MAP_FIXED)*/
		812	const_iv (MAP_PRIVATE)
		813	const_iv (MAP_SHARED)
		814	const_iv (MAP_ANONYMOUS)
		815
		816	/* linuxish */
		817	const_iv (MAP_HUGETLB)
		818	const_iv (MAP_LOCKED)
		819	const_iv (MAP_NORESERVE)
		820	const_iv (MAP_POPULATE)
		821	const_iv (MAP_NONBLOCK)
		822
		823	const_eio (MCL_FUTURE)
		824	const_eio (MCL_CURRENT)
		825
		826	const_eio (MS_ASYNC)
		827	const_eio (MS_INVALIDATE)
		828	const_eio (MS_SYNC)
		829
		830	const_eio (MT_MODIFY)
		831
		832	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		833	const_eio (SYNC_FILE_RANGE_WRITE)
		834	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		835
		836	const_eio (READDIR_DENTS)
		837	const_eio (READDIR_DIRS_FIRST)
		838	const_eio (READDIR_STAT_ORDER)
		839	const_eio (READDIR_FOUND_UNKNOWN)
		840
		841	const_eio (DT_UNKNOWN)
		842	const_eio (DT_FIFO)
		843	const_eio (DT_CHR)
		844	const_eio (DT_DIR)
		845	const_eio (DT_BLK)
		846	const_eio (DT_REG)
		847	const_eio (DT_LNK)
		848	const_eio (DT_SOCK)
		849	const_eio (DT_WHT)
		850	};
		851
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	852	aio_stash = gv_stashpv ("IO::AIO" , 1);
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	853	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	854	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1021		855
		856	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		857	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		858
		859	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		860
1022	create_pipe ();	861	create_respipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1024	}
1025		862
		863	if (eio_init (want_poll, done_poll) < 0)
		864	croak ("IO::AIO: unable to initialise eio library");
		865
		866	/* atfork child called in fifo order, so before eio's handler */
		867	X_THREAD_ATFORK (0, 0, atfork_child);
		868	}
		869
1026	void	870	void
1027	min_parallel (nthreads)	871	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	872	PROTOTYPE: $
		873	CODE:
		874	eio_set_max_poll_reqs (nreqs);
1030		875
1031	void	876	void
1032	max_parallel (nthreads)	877	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	878	PROTOTYPE: $
1035
1036	int
1037	max_outstanding (nreqs)
1038	int nreqs
1039	PROTOTYPE: $
1040	CODE:	879	CODE:
1041	RETVAL = max_outstanding;	880	eio_set_max_poll_time (nseconds);
		881
		882	void
		883	min_parallel (int nthreads)
		884	PROTOTYPE: $
		885	CODE:
		886	eio_set_min_parallel (nthreads);
		887
		888	void
		889	max_parallel (int nthreads)
		890	PROTOTYPE: $
		891	CODE:
		892	eio_set_max_parallel (nthreads);
		893
		894	void
		895	max_idle (int nthreads)
		896	PROTOTYPE: $
		897	CODE:
		898	eio_set_max_idle (nthreads);
		899
		900	void
		901	max_outstanding (int maxreqs)
		902	PROTOTYPE: $
		903	CODE:
1042	max_outstanding = nreqs;	904	max_outstanding = maxreqs;
1043		905
1044	void	906	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	907	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:	908	PPCODE:
1052	{	909	{
1053	dREQ;	910	dREQ;
1054		911
1055	req->type = REQ_OPEN;	912	req->type = EIO_OPEN;
1056	req->data = newSVsv (pathname);	913	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	914	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	915	req->int1 = flags;
1059	req->mode = mode;	916	req->int2 = mode;
1060		917
1061	REQ_SEND;	918	REQ_SEND;
1062	}	919	}
1063		920
1064	void	921	void
1065	aio_close (fh,callback=&PL_sv_undef)	922	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$
1069	ALIAS:	923	ALIAS:
1070	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	924	aio_fsync = EIO_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	925	aio_fdatasync = EIO_FDATASYNC
1073	PPCODE:	926	PPCODE:
1074	{	927	{
		928	int fd = s_fileno_croak (fh, 0);
1075	dREQ;	929	dREQ;
1076		930
1077	req->type = ix;	931	req->type = ix;
1078	req->fh = newSVsv (fh);	932	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	933	req->int1 = fd;
1080		934
1081	REQ_SEND (req);	935	REQ_SEND (req);
1082	}	936	}
1083		937
1084	void	938	void
		939	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		940	PPCODE:
		941	{
		942	int fd = s_fileno_croak (fh, 0);
		943	dREQ;
		944
		945	req->type = EIO_SYNC_FILE_RANGE;
		946	req->sv1 = newSVsv (fh);
		947	req->int1 = fd;
		948	req->offs = offset;
		949	req->size = nbytes;
		950	req->int2 = flags;
		951
		952	REQ_SEND (req);
		953	}
		954
		955	void
		956	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		957	PPCODE:
		958	{
		959	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		960	int fd = s_fileno_croak (fh, 0);
		961	dREQ;
		962
		963	if (close_pipe < 0)
		964	{
		965	int pipefd [2];
		966
		967	if (pipe (pipefd) < 0
		968	|| close (pipefd [1]) < 0
		969	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		970	abort (); /*D*/
		971
		972	close_pipe = pipefd [0];
		973	}
		974
		975	req->type = EIO_DUP2;
		976	req->int1 = close_pipe;
		977	req->sv2 = newSVsv (fh);
		978	req->int2 = fd;
		979
		980	REQ_SEND (req);
		981	}
		982
		983	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	984	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:	985	ALIAS:
1093	aio_read = REQ_READ	986	aio_read = EIO_READ
1094	aio_write = REQ_WRITE	987	aio_write = EIO_WRITE
1095	PROTOTYPE: $$$$$;$
1096	PPCODE:	988	PPCODE:
1097	{	989	{
1098	aio_req req;
1099	STRLEN svlen;	990	STRLEN svlen;
		991	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1100	char *svptr = SvPVbyte (data, svlen);	992	char *svptr = SvPVbyte (data, svlen);
1101		993	UV len = SvUV (length);
1102	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);
1104		994
1105	if (dataoffset < 0)	995	if (dataoffset < 0)
1106	dataoffset += svlen;	996	dataoffset += svlen;
1107		997
1108	if (dataoffset < 0 || dataoffset > svlen)	998	if (dataoffset < 0 || dataoffset > svlen)
1109	croak ("data offset outside of string");	999	croak ("dataoffset outside of data scalar");
1110		1000
1111	if (ix == REQ_WRITE)	1001	if (ix == EIO_WRITE)
1112	{	1002	{
1113	/* write: check length and adjust. */	1003	/* write: check length and adjust. */
1114	if (length < 0 || length + dataoffset > svlen)	1004	if (!SvOK (length) || len + dataoffset > svlen)
1115	length = svlen - dataoffset;	1005	len = svlen - dataoffset;
1116	}	1006	}
1117	else	1007	else
1118	{	1008	{
1119	/* read: grow scalar as necessary */	1009	/* read: check type and grow scalar as necessary */
		1010	SvUPGRADE (data, SVt_PV);
1120	svptr = SvGROW (data, length + dataoffset);	1011	svptr = SvGROW (data, len + dataoffset + 1);
1121	}	1012	}
1122
1123	if (length < 0)
1124	croak ("length must not be negative");
1125		1013
1126	{	1014	{
1127	dREQ;	1015	dREQ;
1128		1016
1129	req->type = ix;	1017	req->type = ix;
1130	req->fh = newSVsv (fh);	1018	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1019	req->int1 = fd;
1132	: IoOFP (sv_2io (fh)));	1020	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1133	req->offset = offset;	1021	req->size = len;
1134	req->length = length;
1135	req->data = SvREFCNT_inc (data);	1022	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1023	req->ptr2 = (char *)svptr + dataoffset;
		1024	req->stroffset = dataoffset;
1137		1025
1138	if (!SvREADONLY (data))	1026	if (!SvREADONLY (data))
1139	{	1027	{
1140	SvREADONLY_on (data);	1028	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1029	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1030	}
1143		1031
1144	REQ_SEND;	1032	REQ_SEND;
1145	}	1033	}
1146	}	1034	}
1147		1035
1148	void	1036	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1037	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: $$$$;$
1156	PPCODE:	1038	PPCODE:
1157	{	1039	{
		1040	SV *data;
		1041	dREQ;
		1042
		1043	req->type = EIO_READLINK;
		1044	req->sv1 = newSVsv (path);
		1045	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1046
		1047	REQ_SEND;
		1048	}
		1049
		1050	void
		1051	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1052	PPCODE:
		1053	{
		1054	int ifd = s_fileno_croak (in_fh , 0);
		1055	int ofd = s_fileno_croak (out_fh, 1);
1158	dREQ;	1056	dREQ;
1159		1057
1160	req->type = REQ_SENDFILE;	1058	req->type = EIO_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1059	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1060	req->int1 = ofd;
1163	req->fh2 = newSVsv (in_fh);	1061	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1062	req->int2 = ifd;
1165	req->offset = in_offset;	1063	req->offs = in_offset;
1166	req->length = length;	1064	req->size = length;
1167		1065
1168	REQ_SEND;	1066	REQ_SEND;
1169	}	1067	}
1170		1068
1171	void	1069	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1070	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$
1178	PPCODE:	1071	PPCODE:
1179	{	1072	{
		1073	int fd = s_fileno_croak (fh, 0);
1180	dREQ;	1074	dREQ;
1181		1075
1182	req->type = REQ_READAHEAD;	1076	req->type = EIO_READAHEAD;
1183	req->fh = newSVsv (fh);	1077	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1078	req->int1 = fd;
1185	req->offset = offset;	1079	req->offs = offset;
1186	req->length = length;	1080	req->size = length;
1187		1081
1188	REQ_SEND;	1082	REQ_SEND;
1189	}	1083	}
1190		1084
1191	void	1085	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1086	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1087	ALIAS:
1196	aio_stat = REQ_STAT	1088	aio_stat = EIO_STAT
1197	aio_lstat = REQ_LSTAT	1089	aio_lstat = EIO_LSTAT
		1090	aio_statvfs = EIO_STATVFS
1198	PPCODE:	1091	PPCODE:
1199	{	1092	{
1200	dREQ;	1093	dREQ;
1201		1094
1202	New (0, req->statdata, 1, Stat_t);	1095	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		1096
1209	if (SvPOK (fh_or_path))	1097	if (SvPOK (req->sv1))
1210	{	1098	{
1211	req->type = ix;	1099	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	1100	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	1101	}
1215	else	1102	else
1216	{	1103	{
1217	req->type = REQ_FSTAT;	1104	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)));	1105	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	1106	}
1221		1107
1222	REQ_SEND;	1108	REQ_SEND;
1223	}	1109	}
1224		1110
		1111	UV
		1112	major (UV dev)
		1113	ALIAS:
		1114	minor = 1
		1115	CODE:
		1116	RETVAL = ix ? major (dev) : minor (dev);
		1117	OUTPUT:
		1118	RETVAL
		1119
		1120	UV
		1121	makedev (UV maj, UV min)
		1122	CODE:
		1123	RETVAL = makedev (maj, min);
		1124	OUTPUT:
		1125	RETVAL
		1126
1225	void	1127	void
		1128	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1129	PPCODE:
		1130	{
		1131	dREQ;
		1132
		1133	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1134	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1135	req->sv1 = newSVsv (fh_or_path);
		1136
		1137	if (SvPOK (req->sv1))
		1138	{
		1139	req->type = EIO_UTIME;
		1140	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1141	}
		1142	else
		1143	{
		1144	req->type = EIO_FUTIME;
		1145	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1146	}
		1147
		1148	REQ_SEND;
		1149	}
		1150
		1151	void
		1152	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1153	PPCODE:
		1154	{
		1155	dREQ;
		1156
		1157	req->sv1 = newSVsv (fh_or_path);
		1158	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1159
		1160	if (SvPOK (req->sv1))
		1161	{
		1162	req->type = EIO_TRUNCATE;
		1163	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1164	}
		1165	else
		1166	{
		1167	req->type = EIO_FTRUNCATE;
		1168	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1169	}
		1170
		1171	REQ_SEND;
		1172	}
		1173
		1174	void
		1175	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1176	ALIAS:
		1177	aio_chmod = EIO_CHMOD
		1178	aio_mkdir = EIO_MKDIR
		1179	PPCODE:
		1180	{
		1181	dREQ;
		1182
		1183	req->int2 = mode;
		1184	req->sv1 = newSVsv (fh_or_path);
		1185
		1186	if (SvPOK (req->sv1))
		1187	{
		1188	req->type = ix;
		1189	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1190	}
		1191	else
		1192	{
		1193	req->type = EIO_FCHMOD;
		1194	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1195	}
		1196
		1197	REQ_SEND;
		1198	}
		1199
		1200	void
		1201	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1202	PPCODE:
		1203	{
		1204	dREQ;
		1205
		1206	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1207	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1208	req->sv1 = newSVsv (fh_or_path);
		1209
		1210	if (SvPOK (req->sv1))
		1211	{
		1212	req->type = EIO_CHOWN;
		1213	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1214	}
		1215	else
		1216	{
		1217	req->type = EIO_FCHOWN;
		1218	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1219	}
		1220
		1221	REQ_SEND;
		1222	}
		1223
		1224	void
		1225	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1226	PPCODE:
		1227	{
		1228	dREQ;
		1229
		1230	req->type = EIO_READDIR;
		1231	req->sv1 = newSVsv (pathname);
		1232	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1233	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1234
		1235	if (flags & EIO_READDIR_DENTS)
		1236	req->int1 |= EIO_READDIR_CUSTOM2;
		1237
		1238	REQ_SEND;
		1239	}
		1240
		1241	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1242	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1243	ALIAS:
1230	aio_unlink = REQ_UNLINK	1244	aio_unlink = EIO_UNLINK
1231	aio_rmdir = REQ_RMDIR	1245	aio_rmdir = EIO_RMDIR
1232	aio_readdir = REQ_READDIR	1246	aio_readdir = EIO_READDIR
1233	PPCODE:	1247	PPCODE:
1234	{	1248	{
1235	dREQ;	1249	dREQ;
1236		1250
1237	req->type = ix;	1251	req->type = ix;
1238	req->data = newSVsv (pathname);	1252	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1253	req->ptr1 = SvPVbyte_nolen (req->sv1);
1240		1254
1241	REQ_SEND;	1255	REQ_SEND;
1242	}	1256	}
1243		1257
1244	void	1258	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1259	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1260	ALIAS:
1250	aio_link = REQ_LINK	1261	aio_link = EIO_LINK
1251	aio_symlink = REQ_SYMLINK	1262	aio_symlink = EIO_SYMLINK
1252	aio_rename = REQ_RENAME	1263	aio_rename = EIO_RENAME
1253	PPCODE:	1264	PPCODE:
1254	{	1265	{
1255	dREQ;	1266	dREQ;
1256		1267
1257	req->type = ix;	1268	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1269	req->sv1 = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1270	req->ptr1 = SvPVbyte_nolen (req->sv1);
1260	req->data = newSVsv (newpath);	1271	req->sv2 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1272	req->ptr2 = SvPVbyte_nolen (req->sv2);
1262		1273
1263	REQ_SEND;	1274	REQ_SEND;
1264	}	1275	}
1265		1276
1266	void	1277	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1278	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1279	PPCODE:
1271	{	1280	{
1272	dREQ;	1281	dREQ;
1273		1282
1274	req->type = REQ_SLEEP;	1283	req->type = EIO_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1284	req->sv1 = newSVsv (pathname);
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1285	req->ptr1 = SvPVbyte_nolen (req->sv1);
1277		1286	req->int2 = (mode_t)mode;
		1287	req->offs = dev;
		1288
1278	REQ_SEND;	1289	REQ_SEND;
1279	}	1290	}
1280		1291
1281	void	1292	void
1282	aio_group (callback=&PL_sv_undef)	1293	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1283	SV * callback	1294	ALIAS:
1284	PROTOTYPE: ;$	1295	aio_mtouch = EIO_MTOUCH
		1296	aio_msync = EIO_MSYNC
1285	PPCODE:	1297	PPCODE:
1286	{	1298	{
		1299	STRLEN svlen;
		1300	char *svptr = SvPVbyte (data, svlen);
		1301	UV len = SvUV (length);
		1302
		1303	if (offset < 0)
		1304	offset += svlen;
		1305
		1306	if (offset < 0 || offset > svlen)
		1307	croak ("offset outside of scalar");
		1308
		1309	if (!SvOK (length) || len + offset > svlen)
		1310	len = svlen - offset;
		1311
		1312	{
		1313	dREQ;
		1314
		1315	req->type = ix;
		1316	req->sv2 = SvREFCNT_inc (data);
		1317	req->ptr2 = (char *)svptr + offset;
		1318	req->size = len;
		1319	req->int1 = flags;
		1320
		1321	REQ_SEND;
		1322	}
		1323	}
		1324
		1325	void
		1326	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1327	PPCODE:
		1328	{
		1329	STRLEN svlen;
		1330	char *svptr = SvPVbyte (data, svlen);
		1331	UV len = SvUV (length);
		1332
		1333	if (offset < 0)
		1334	offset += svlen;
		1335
		1336	if (offset < 0 || offset > svlen)
		1337	croak ("offset outside of scalar");
		1338
		1339	if (!SvOK (length) || len + offset > svlen)
		1340	len = svlen - offset;
		1341
		1342	{
		1343	dREQ;
		1344
		1345	req->type = EIO_MLOCK;
		1346	req->sv2 = SvREFCNT_inc (data);
		1347	req->ptr2 = (char *)svptr + offset;
		1348	req->size = len;
		1349
		1350	REQ_SEND;
		1351	}
		1352	}
		1353
		1354	void
		1355	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1356	PPCODE:
		1357	{
		1358	dREQ;
		1359
		1360	req->type = EIO_MLOCKALL;
		1361	req->int1 = flags;
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1368	PPCODE:
		1369	{
1287	dREQ;	1370	dREQ;
1288		1371
		1372	req->type = EIO_BUSY;
		1373	req->nv1 = delay < 0. ? 0. : delay;
		1374
		1375	REQ_SEND;
		1376	}
		1377
		1378	void
		1379	aio_group (SV *callback=&PL_sv_undef)
		1380	PPCODE:
		1381	{
		1382	dREQ;
		1383
1289	req->type = REQ_GROUP;	1384	req->type = EIO_GROUP;
		1385
1290	req_send (req);	1386	req_submit (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1387	XPUSHs (req_sv (req, aio_grp_stash));
1293	}	1388	}
1294		1389
1295	void	1390	void
1296	aio_nop (callback=&PL_sv_undef)	1391	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback	1392	ALIAS:
		1393	aio_nop = EIO_NOP
		1394	aio_sync = EIO_SYNC
1298	PPCODE:	1395	PPCODE:
1299	{	1396	{
1300	dREQ;	1397	dREQ;
1301		1398
1302	req->type = REQ_NOP;	1399	req->type = ix;
1303		1400
1304	REQ_SEND;	1401	REQ_SEND;
1305	}	1402	}
1306		1403
1307	void	1404	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1405	aioreq_pri (int pri = 0)
1309	CODE:	1406	CODE:
		1407	RETVAL = next_pri;
		1408	if (items > 0)
		1409	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1410	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1411	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1412	next_pri = pri;
		1413	}
		1414	OUTPUT:
		1415	RETVAL
1313		1416
1314	void	1417	void
1315	aioreq_nice (int nice = 0)	1418	aioreq_nice (int nice = 0)
1316	CODE:	1419	CODE:
1317	nice = next_pri - nice;	1420	nice = next_pri - nice;
1318	if (nice < PRI_MIN) nice = PRI_MIN;	1421	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1319	if (nice > PRI_MAX) nice = PRI_MAX;	1422	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1320	next_pri = nice + PRI_BIAS;	1423	next_pri = nice;
1321		1424
1322	void	1425	void
1323	flush ()	1426	flush ()
1324	PROTOTYPE:
1325	CODE:	1427	CODE:
1326	while (nreqs)	1428	while (eio_nreqs ())
1327	{	1429	{
1328	poll_wait ();	1430	poll_wait ();
1329	poll_cb ();	1431	poll_cb ();
1330	}	1432	}
1331		1433
1332	void
1333	poll()
1334	PROTOTYPE:
1335	CODE:
1336	if (nreqs)
1337	{
1338	poll_wait ();
1339	poll_cb ();
1340	}
1341
1342	int	1434	int
1343	poll_fileno()	1435	poll ()
1344	PROTOTYPE:
1345	CODE:	1436	CODE:
1346	RETVAL = respipe [0];	1437	poll_wait ();
1347	OUTPUT:
1348	RETVAL
1349
1350	int
1351	poll_cb(...)
1352	PROTOTYPE:
1353	CODE:
1354	RETVAL = poll_cb ();	1438	RETVAL = poll_cb ();
1355	OUTPUT:	1439	OUTPUT:
1356	RETVAL	1440	RETVAL
1357		1441
1358	void
1359	poll_wait()
1360	PROTOTYPE:
1361	CODE:
1362	if (nreqs)
1363	poll_wait ();
1364
1365	int	1442	int
1366	nreqs()	1443	poll_fileno ()
1367	PROTOTYPE:
1368	CODE:	1444	CODE:
1369	RETVAL = nreqs;	1445	RETVAL = s_epipe_fd (&respipe);
1370	OUTPUT:	1446	OUTPUT:
1371	RETVAL	1447	RETVAL
1372		1448
		1449	int
		1450	poll_cb (...)
		1451	PROTOTYPE:
		1452	CODE:
		1453	RETVAL = poll_cb ();
		1454	OUTPUT:
		1455	RETVAL
		1456
		1457	void
		1458	poll_wait ()
		1459	CODE:
		1460	poll_wait ();
		1461
		1462	int
		1463	nreqs ()
		1464	CODE:
		1465	RETVAL = eio_nreqs ();
		1466	OUTPUT:
		1467	RETVAL
		1468
		1469	int
		1470	nready ()
		1471	CODE:
		1472	RETVAL = eio_nready ();
		1473	OUTPUT:
		1474	RETVAL
		1475
		1476	int
		1477	npending ()
		1478	CODE:
		1479	RETVAL = eio_npending ();
		1480	OUTPUT:
		1481	RETVAL
		1482
		1483	int
		1484	nthreads ()
		1485	CODE:
		1486	RETVAL = eio_nthreads ();
		1487	OUTPUT:
		1488	RETVAL
		1489
		1490	int
		1491	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1492	CODE:
		1493	RETVAL = posix_fadvise (fh, offset, length, advice);
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	ssize_t
		1498	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1499	CODE:
		1500	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1501	OUTPUT:
		1502	RETVAL
		1503
		1504	void
		1505	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1506	PPCODE:
		1507	sv_unmagic (scalar, MMAP_MAGIC);
		1508	{
		1509	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1510	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1511	if (addr == (void *)-1)
		1512	XSRETURN_NO;
		1513
		1514	sv_force_normal (scalar);
		1515
		1516	/* we store the length in mg_obj, as namlen is I32 :/ */
		1517	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1518	->mg_obj = (SV *)length;
		1519
		1520	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1521
		1522	if (!(prot & PROT_WRITE))
		1523	SvREADONLY_on (scalar);
		1524
		1525	if (SvLEN (scalar))
		1526	Safefree (SvPVX (scalar));
		1527
		1528	SvPVX (scalar) = (char *)addr;
		1529	SvCUR_set (scalar, length);
		1530	SvLEN_set (scalar, 0);
		1531	SvPOK_only (scalar);
		1532
		1533	XSRETURN_YES;
		1534	}
		1535
		1536	void
		1537	munmap (SV *scalar)
		1538	CODE:
		1539	sv_unmagic (scalar, MMAP_MAGIC);
		1540
		1541	int
		1542	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1543	ALIAS:
		1544	mprotect = 1
		1545	CODE:
		1546	{
		1547	STRLEN svlen;
		1548	void *addr = SvPVbyte (scalar, svlen);
		1549	size_t len = SvUV (length);
		1550
		1551	if (offset < 0)
		1552	offset += svlen;
		1553
		1554	if (offset < 0 || offset > svlen)
		1555	croak ("offset outside of scalar");
		1556
		1557	if (!SvOK (length) || len + offset > svlen)
		1558	len = svlen - offset;
		1559
		1560	addr = (void *)(((intptr_t)addr) + offset);
		1561	eio_page_align (&addr, &len);
		1562
		1563	switch (ix)
		1564	{
		1565	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1566	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1567	}
		1568	}
		1569	OUTPUT:
		1570	RETVAL
		1571
		1572	int
		1573	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1574	CODE:
		1575	{
		1576	STRLEN svlen;
		1577	void *addr = SvPVbyte (scalar, svlen);
		1578	size_t len = SvUV (length);
		1579
		1580	if (offset < 0)
		1581	offset += svlen;
		1582
		1583	if (offset < 0 || offset > svlen)
		1584	croak ("offset outside of scalar");
		1585
		1586	if (!SvOK (length) || len + offset > svlen)
		1587	len = svlen - offset;
		1588
		1589	addr = (void *)(((intptr_t)addr) + offset);
		1590	eio_page_align (&addr, &len);
		1591	#if _POSIX_MEMLOCK_RANGE
		1592	RETVAL = munlock (addr, len);
		1593	#else
		1594	RETVAL = ((errno = ENOSYS), -1);
		1595	#endif
		1596	}
		1597	OUTPUT:
		1598	RETVAL
		1599
		1600	int
		1601	munlockall ()
		1602	CODE:
		1603	#if _POSIX_MEMLOCK
		1604	munlockall ();
		1605	#else
		1606	RETVAL = -1;
		1607	errno = ENOSYS;
		1608	#endif
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	void _on_next_submit (SV *cb)
		1613	CODE:
		1614	SvREFCNT_dec (on_next_submit);
		1615	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1616
1373	PROTOTYPES: DISABLE	1617	PROTOTYPES: DISABLE
1374		1618
1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1619	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376		1620
1377	void	1621	void
1378	cancel (aio_req_ornot req)	1622	cancel (aio_req_ornot req)
1379	CODE:	1623	CODE:
1380	req_cancel (req);	1624	eio_cancel (req);
1381		1625
1382	void	1626	void
1383	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1627	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1384	CODE:	1628	PPCODE:
		1629	{
		1630	if (GIMME_V != G_VOID)
		1631	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1632
		1633	if (items > 1)
		1634	{
		1635	SV *cb_cv =get_cb (callback);
		1636
1385	SvREFCNT_dec (req->callback);	1637	SvREFCNT_dec (req->callback);
1386	req->callback = newSVsv (callback);	1638	req->callback = SvREFCNT_inc (cb_cv);
		1639	}
		1640	}
1387		1641
1388	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1642	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1389		1643
1390	void	1644	void
1391	add (aio_req grp, ...)	1645	add (aio_req grp, ...)
1392	PPCODE:	1646	PPCODE:
1393	{	1647	{
1394	int i;	1648	int i;
1395	aio_req req;
1396		1649
1397	if (grp->fd == 2)	1650	if (grp->int1 == 2)
1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1651	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399		1652
1400	for (i = 1; i < items; ++i )	1653	for (i = 1; i < items; ++i )
1401	{	1654	{
		1655	aio_req req;
		1656
1402	if (GIMME_V != G_VOID)	1657	if (GIMME_V != G_VOID)
1403	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1658	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1404		1659
1405	req = SvAIO_REQ (ST (i));	1660	req = SvAIO_REQ (ST (i));
1406		1661
1407	if (req)	1662	if (req)
1408	{	1663	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	}	1664	}
1421	}	1665	}
		1666
		1667	void
		1668	cancel_subs (aio_req_ornot req)
		1669	CODE:
		1670	req_cancel_subs (req);
1422		1671
1423	void	1672	void
1424	result (aio_req grp, ...)	1673	result (aio_req grp, ...)
1425	CODE:	1674	CODE:
1426	{	1675	{
1427	int i;	1676	int i;
		1677	AV *av;
		1678
		1679	grp->errorno = errno;
		1680
1428	AV *av = newAV ();	1681	av = newAV ();
		1682	av_extend (av, items - 1);
1429		1683
1430	for (i = 1; i < items; ++i )	1684	for (i = 1; i < items; ++i )
1431	av_push (av, newSVsv (ST (i)));	1685	av_push (av, newSVsv (ST (i)));
1432		1686
1433	SvREFCNT_dec (grp->data);	1687	SvREFCNT_dec (grp->sv1);
1434	grp->data = (SV *)av;	1688	grp->sv1 = (SV *)av;
1435	}	1689	}
		1690
		1691	void
		1692	errno (aio_req grp, int errorno = errno)
		1693	CODE:
		1694	grp->errorno = errorno;
1436		1695
1437	void	1696	void
1438	limit (aio_req grp, int limit)	1697	limit (aio_req grp, int limit)
1439	CODE:	1698	CODE:
1440	grp->fd2 = limit;	1699	eio_grp_limit (grp, limit);
1441	aio_grp_feed (grp);
1442		1700
1443	void	1701	void
1444	feed (aio_req grp, SV *callback=&PL_sv_undef)	1702	feed (aio_req grp, SV *callback=&PL_sv_undef)
1445	CODE:	1703	CODE:
1446	{	1704	{
1447	SvREFCNT_dec (grp->fh2);	1705	SvREFCNT_dec (grp->sv2);
1448	grp->fh2 = newSVsv (callback);	1706	grp->sv2 = newSVsv (callback);
		1707	grp->feed = aio_grp_feed;
1449		1708
1450	if (grp->fd2 <= 0)	1709	if (grp->int2 <= 0)
1451	grp->fd2 = 2;	1710	grp->int2 = 2;
1452		1711
1453	aio_grp_feed (grp);	1712	eio_grp_limit (grp, grp->int2);
1454	}	1713	}
1455		1714

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