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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC vs.
Revision 1.169 by root, Wed Aug 4 16:06:54 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
27	#include <limits.h>	17	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	18	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	19	#include <sched.h>
32		20
33	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>	22	# include <sys/mman.h>
36	# elif __freebsd	23	#endif
37	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
38	# include <sys/uio.h>	68	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		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	#ifndef POSIX_MADV_NORMAL
		146	# define POSIX_MADV_NORMAL 0
		147	# define NO_MADVISE 1
		148	#endif
		149	#ifndef POSIX_MADV_SEQUENTIAL
		150	# define POSIX_MADV_SEQUENTIAL 0
		151	#endif
		152	#ifndef POSIX_MADV_RANDOM
		153	# define POSIX_MADV_RANDOM 0
		154	#endif
		155	#ifndef POSIX_MADV_WILLNEED
		156	# define POSIX_MADV_WILLNEED 0
		157	#endif
		158	#ifndef POSIX_MADV_DONTNEED
		159	# define POSIX_MADV_DONTNEED 0
		160	#endif
		161
		162	#ifndef ST_NODEV
		163	# define ST_NODEV 0
		164	#endif
		165	#ifndef ST_NOEXEC
		166	# define ST_NOEXEC 0
		167	#endif
		168	#ifndef ST_SYNCHRONOUS
		169	# define ST_SYNCHRONOUS 0
		170	#endif
		171	#ifndef ST_MANDLOCK
		172	# define ST_MANDLOCK 0
		173	#endif
		174	#ifndef ST_WRITE
		175	# define ST_WRITE 0
		176	#endif
		177	#ifndef ST_APPEND
		178	# define ST_APPEND 0
		179	#endif
		180	#ifndef ST_IMMUTABLE
		181	# define ST_IMMUTABLE 0
		182	#endif
		183	#ifndef ST_NOATIME
		184	# define ST_NOATIME 0
		185	#endif
		186	#ifndef ST_NODIRATIME
		187	# define ST_NODIRATIME 0
		188	#endif
		189	#ifndef ST_RELATIME
		190	# define ST_RELATIME 0
		191	#endif
		192
		193	#ifndef MCL_CURRENT
		194	# define MCL_CURRENT 0
		195	#endif
		196	#ifndef MCL_FUTURE
		197	# define MCL_FUTURE 0
		198	#endif
		199
		200	#ifndef MAP_ANONYMOUS
		201	# ifdef MAP_ANON
		202	# define MAP_ANONYMOUS MAP_ANON
43	# else	203	# else
44	# error sendfile support requested but not available	204	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	205	# endif
46	#endif	206	#endif
47		207	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	208	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif	209	#endif
52		210	#ifndef MAP_LOCKED
53	#ifndef PTHREAD_STACK_MIN	211	# define MAP_LOCKED 0
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif	212	#endif
57		213	#ifndef MAP_NORESERVE
58	#if __ia64	214	# define MAP_NORESERVE 0
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif	215	#endif
		216	#ifndef MAP_POPULATE
		217	# define MAP_POPULATE 0
		218	#endif
		219	#ifndef MAP_NONBLOCK
		220	# define MAP_NONBLOCK 0
		221	#endif
65		222
66	/* buffer size for various temporary buffers */	223	#ifndef PAGESIZE
67	#define AIO_BUFSIZE 65536	224	# define PAGESIZE sysconf (_SC_PAGESIZE)
		225	#endif
68		226
69	#define dBUF \	227	static int req_invoke (eio_req *req);
70	char *aio_buf; \	228	#define EIO_FINISH(req) req_invoke (req)
71	LOCK (wrklock); \	229	static void req_destroy (eio_req *grp);
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	230	#define EIO_DESTROY(req) req_destroy (req)
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76		231
77	enum {	232	enum {
78	REQ_QUIT,	233	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};	234	};
90		235
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	236	#include "libeio/eio.c"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"
93		237
94	typedef struct aio_cb
95	{
96	struct aio_cb *volatile next;
97
98	SV *data, *callback;
99	SV *fh, *fh2;
100	void *dataptr, *data2ptr;
101	Stat_t *statdata;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105
106	STRLEN dataoffset;
107	int type;
108	int fd, fd2;
109	int errorno;
110	mode_t mode; /* open */
111
112	unsigned char flags;
113	unsigned char pri;
114
115	SV *self; /* the perl counterpart of this request, if any */
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;
118
119	enum {
120	FLAG_CANCELLED = 0x01,
121	};
122
123	typedef aio_cb *aio_req;	238	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	239	typedef eio_req *aio_req_ornot;
125		240
126	enum {	241	static SV *on_next_submit;
127	PRI_MIN = -4,	242	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	243	static int max_outstanding;
129		244
130	DEFAULT_PRI = 0,	245	static s_epipe respipe;
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		246
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136
137	static int started, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149
150	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
152
153	typedef struct worker {
154	/* locked by wrklock */
155	struct worker *prev, *next;
156
157	pthread_t tid;
158
159	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */
161	void *dbuf;
162	DIR *dirp;
163	} worker;
164
165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
166
167	static void worker_clear (worker *wrk)
168	{
169	if (wrk->dirp)
170	{
171	closedir (wrk->dirp);
172	wrk->dirp = 0;
173	}
174
175	if (wrk->dbuf)
176	{
177	free (wrk->dbuf);
178	wrk->dbuf = 0;
179	}
180	}
181
182	static void worker_free (worker *wrk)
183	{
184	wrk->next->prev = wrk->prev;
185	wrk->prev->next = wrk->next;
186
187	free (wrk);
188	}
189
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
193
194	/*
195	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.
198	*/
199	typedef struct {
200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
201	int size;
202	} reqq;
203
204	static reqq req_queue;
205	static reqq res_queue;
206
207	int reqq_push (reqq *q, aio_req req)
208	{
209	int pri = req->pri;
210	req->next = 0;
211
212	if (q->qe[pri])
213	{
214	q->qe[pri]->next = req;
215	q->qe[pri] = req;
216	}
217	else
218	q->qe[pri] = q->qs[pri] = req;
219
220	return q->size++;
221	}
222
223	aio_req reqq_shift (reqq *q)
224	{
225	int pri;
226
227	if (!q->size)
228	return 0;
229
230	--q->size;
231
232	for (pri = NUM_PRI; pri--; )
233	{
234	aio_req req = q->qs[pri];
235
236	if (req)
237	{
238	if (!(q->qs[pri] = req->next))
239	q->qe[pri] = 0;
240
241	return req;
242	}
243	}
244
245	abort ();
246	}
247
248	static int poll_cb (int max);
249	static void req_invoke (aio_req req);
250	static void req_free (aio_req req);	247	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	248	static void req_cancel (aio_req req);
252		249
		250	static void want_poll (void)
		251	{
		252	/* write a dummy byte to the pipe so fh becomes ready */
		253	s_epipe_signal (&respipe);
		254	}
		255
		256	static void done_poll (void)
		257	{
		258	/* read any signals sent by the worker threads */
		259	s_epipe_drain (&respipe);
		260	}
		261
253	/* must be called at most once */	262	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	263	static SV *req_sv (aio_req req, HV *stash)
255	{	264	{
256	if (!req->self)	265	if (!req->self)
257	{	266	{
258	req->self = (SV *)newHV ();	267	req->self = (SV *)newHV ();
259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	268	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260	}	269	}
261		270
262	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	271	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263	}	272	}
264		273
265	static aio_req SvAIO_REQ (SV *sv)	274	static aio_req SvAIO_REQ (SV *sv)
266	{	275	{
267	MAGIC *mg;	276	MAGIC *mg;
268		277
269	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	278	if (!SvROK (sv)
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
270	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
271		283
272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273		285
274	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	287	}
276		288
277	static void aio_grp_feed (aio_req grp)	289	static void aio_grp_feed (aio_req grp)
278	{	290	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	291	if (grp->sv2 && SvOK (grp->sv2))
280	{	292	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	293	dSP;
286		294
287	ENTER;	295	ENTER;
288	SAVETMPS;	296	SAVETMPS;
289	PUSHMARK (SP);	297	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	298	XPUSHs (req_sv (grp, aio_grp_stash));
291	PUTBACK;	299	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	300	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	301	SPAGAIN;
294	FREETMPS;	302	FREETMPS;
295	LEAVE;	303	LEAVE;
296	}
297
298	/* stop if no progress has been made */
299	if (old_len == grp->length)
300	{
301	SvREFCNT_dec (grp->fh2);
302	grp->fh2 = 0;
303	break;
304	}
305	}	304	}
306	}	305	}
307		306
308	static void aio_grp_dec (aio_req grp)	307	static void req_submit (eio_req *req)
309	{	308	{
310	--grp->length;	309	eio_submit (req);
311		310
312	/* call feeder, if applicable */	311	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	312	{
318	req_invoke (grp);	313	dSP;
319	req_free (grp);	314	SV *cb = sv_2mortal (on_next_submit);
		315
		316	on_next_submit = 0;
		317
		318	PUSHMARK (SP);
		319	PUTBACK;
		320	call_sv (cb, G_DISCARD | G_EVAL);
320	}	321	}
321	}	322	}
322		323
323	static void poll_wait ()	324	static int req_invoke (eio_req *req)
324	{	325	{
325	fd_set rfd;	326	if (req->flags & FLAG_SV2_RO_OFF)
		327	SvREADONLY_off (req->sv2);
326		328
327	while (nreqs)	329	if (!EIO_CANCELLED (req) && req->callback)
328	{	330	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)
349	{
350	dSP;	331	dSP;
351		332	static SV *sv_result_cache; /* caches the result integer SV */
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	333	SV *sv_result;
353	{
354	errno = req->errorno;
355		334
356	ENTER;	335	ENTER;
357	SAVETMPS;	336	SAVETMPS;
358	PUSHMARK (SP);	337	PUSHMARK (SP);
359	EXTEND (SP, 1);	338	EXTEND (SP, 1);
360		339
		340	/* do not recreate the result IV from scratch each time */
		341	if (expect_true (sv_result_cache))
		342	{
		343	sv_result = sv_result_cache; sv_result_cache = 0;
		344	SvIV_set (sv_result, req->result);
		345	}
		346	else
		347	{
		348	sv_result = newSViv (req->result);
		349	SvREADONLY_on (sv_result);
		350	}
		351
361	switch (req->type)	352	switch (req->type)
362	{	353	{
363	case REQ_READDIR:	354	case EIO_READDIR:
364	{	355	{
365	SV *rv = &PL_sv_undef;	356	SV *rv = &PL_sv_undef;
366		357
367	if (req->result >= 0)	358	if (req->result >= 0)
368	{	359	{
369	int i;	360	int i;
370	char *buf = req->data2ptr;	361	char *names = (char *)req->ptr2;
		362	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	363	AV *av = newAV ();
372		364
373	av_extend (av, req->result - 1);	365	av_extend (av, req->result - 1);
374		366
375	for (i = 0; i < req->result; ++i)	367	for (i = 0; i < req->result; ++i)
376	{	368	{
377	SV *sv = newSVpv (buf, 0);	369	if (req->int1 & EIO_READDIR_DENTS)
		370	{
		371	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		372
		373	if (req->int1 & EIO_READDIR_CUSTOM2)
		374	{
		375	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		376	AV *avent = newAV ();
		377
		378	av_extend (avent, 2);
		379
		380	if (!sv_type [ent->type])
		381	{
		382	sv_type [ent->type] = newSViv (ent->type);
		383	SvREADONLY_on (sv_type [ent->type]);
		384	}
		385
		386	av_store (avent, 0, namesv);
		387	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		388	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		389
		390	av_store (av, i, newRV_noinc ((SV *)avent));
		391	}
		392	else
379	av_store (av, i, sv);	393	av_store (av, i, namesv);
		394
		395	++ent;
		396	}
		397	else
		398	{
		399	SV *name = newSVpv (names, 0);
		400	av_store (av, i, name);
380	buf += SvCUR (sv) + 1;	401	names += SvCUR (name) + 1;
		402	}
381	}	403	}
382		404
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	405	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	406	}
385		407
386	PUSHs (rv);	408	PUSHs (rv);
		409
		410	if (req->int1 & EIO_READDIR_CUSTOM1)
		411	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
387	}	412	}
388	break;	413	break;
389		414
390	case REQ_OPEN:	415	case EIO_OPEN:
391	{	416	{
392	/* convert fd to fh */	417	/* convert fd to fh */
393	SV *fh;	418	SV *fh = &PL_sv_undef;
394		419
395	PUSHs (sv_2mortal (newSViv (req->result)));	420	if (req->result >= 0)
396	PUTBACK;	421	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	422	GV *gv = (GV *)sv_newmortal ();
398	SPAGAIN;	423	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		424	char sym [64];
		425	int symlen;
		426
		427	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		428	gv_init (gv, aio_stash, sym, symlen, 0);
399		429
400	fh = SvREFCNT_inc (POPs);	430	symlen = snprintf (
		431	sym,
		432	sizeof (sym),
		433	"%s&=%d",
		434	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		435	(int)req->result
		436	);
401		437
		438	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		439	fh = (SV *)gv;
		440	}
		441
402	PUSHMARK (SP);	442	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	443	}
405	break;	444	break;
406		445
		446	case EIO_STATVFS:
		447	case EIO_FSTATVFS:
		448	{
		449	SV *rv = &PL_sv_undef;
		450
		451	if (req->result >= 0)
		452	{
		453	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		454	HV *hv = newHV ();
		455
		456	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		457
		458	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		459	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		460	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		461	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		462	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		463	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		464	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		465	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		466	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		467	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		468	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		469	}
		470
		471	PUSHs (rv);
		472	}
		473
		474	break;
		475
407	case REQ_GROUP:	476	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	477	req->int1 = 2; /* mark group as finished */
409		478
410	if (req->data)	479	if (req->sv1)
411	{	480	{
412	int i;	481	int i;
413	AV *av = (AV *)req->data;	482	AV *av = (AV *)req->sv1;
414		483
415	EXTEND (SP, AvFILL (av) + 1);	484	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	485	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	486	PUSHs (*av_fetch (av, i, 0));
418	}	487	}
419	break;	488	break;
420		489
421	case REQ_NOP:	490	case EIO_NOP:
422	case REQ_BUSY:	491	case EIO_BUSY:
423	break;	492	break;
424		493
		494	case EIO_READLINK:
		495	if (req->result > 0)
		496	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		497	break;
		498
		499	case EIO_STAT:
		500	case EIO_LSTAT:
		501	case EIO_FSTAT:
		502	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		503	PL_laststatval = req->result;
		504	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		505	PUSHs (sv_result);
		506	break;
		507
		508	case EIO_READ:
		509	{
		510	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		511	*SvEND (req->sv2) = 0;
		512	SvPOK_only (req->sv2);
		513	SvSETMAGIC (req->sv2);
		514	PUSHs (sv_result);
		515	}
		516	break;
		517
		518	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		519	if (req->result > 0)
		520	SvIV_set (sv_result, 0);
		521	/* FALLTHROUGH */
		522
425	default:	523	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	524	PUSHs (sv_result);
427	break;	525	break;
428	}	526	}
429		527
		528	errno = req->errorno;
430		529
431	PUTBACK;	530	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	531	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	532	SPAGAIN;
		533
		534	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		535	SvREFCNT_dec (sv_result);
		536	else
		537	sv_result_cache = sv_result;
434		538
435	FREETMPS;	539	FREETMPS;
436	LEAVE;	540	LEAVE;
		541
		542	PUTBACK;
437	}	543	}
438		544
439	if (req->grp)	545	return !!SvTRUE (ERRSV);
440	{
441	aio_req grp = req->grp;
442
443	/* unlink request */
444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
446
447	if (grp->grp_first == req)
448	grp->grp_first = req->grp_next;
449
450	aio_grp_dec (grp);
451	}
452
453	if (SvTRUE (ERRSV))
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	546	}
459		547
460	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
461	{	549	{
462	if (req->self)	550	if (req->self)
463	{	551	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
466	}	554	}
467		555
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476		559
477	Safefree (req);	560	Safefree (req);
478	}	561	}
479		562
480	static void req_cancel_subs (aio_req grp)	563	static void req_cancel_subs (aio_req grp)
481	{	564	{
482	aio_req sub;	565	aio_req sub;
483		566
484	if (grp->type != REQ_GROUP)	567	if (grp->type != EIO_GROUP)
485	return;	568	return;
486		569
487	SvREFCNT_dec (grp->fh2);	570	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	571	grp->sv2 = 0;
489		572
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	573	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	574	}
493		575
494	static void req_cancel (aio_req req)	576	static void
		577	create_respipe (void)
495	{	578	{
496	req->flags |= FLAG_CANCELLED;	579	if (s_epipe_renew (&respipe))
497		580	croak ("IO::AIO: unable to initialize result pipe");
498	req_cancel_subs (req);
499	}	581	}
500		582
501	static int poll_cb (int max)	583	static void poll_wait (void)
502	{	584	{
503	dSP;	585	while (eio_nreqs ())
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507
508	while (max <= 0 || count < max)
509	{	586	{
		587	int size;
		588
510	LOCK (reslock);	589	X_LOCK (reslock);
511	req = reqq_shift (&res_queue);	590	size = res_queue.size;
512
513	if (req)
514	{
515	if (!res_queue.size)
516	{
517	/* read any signals sent by the worker threads */
518	char buf [32];
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}
522	}
523
524	UNLOCK (reslock);	591	X_UNLOCK (reslock);
525		592
526	if (!req)	593	if (size)
527	break;	594	return;
528		595
529	--nreqs;	596	etp_maybe_start_thread ();
530		597
531	if (req->type == REQ_QUIT)	598	s_epipe_wait (&respipe);
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{
535	req->fd = 1; /* mark request as delayed */
536	continue;
537	}
538	else
539	{
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}	599	}
560
561	return count;
562	}	600	}
563		601
564	static void *aio_proc(void *arg);	602	static int poll_cb (void)
565
566	static void start_thread (void)
567	{	603	{
568	sigset_t fullsigset, oldsigset;	604	for (;;)
569	pthread_attr_t attr;
570
571	worker *wrk = calloc (1, sizeof (worker));
572
573	if (!wrk)
574	croak ("unable to allocate worker thread data");
575
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586	{	605	{
587	wrk->prev = &wrk_first;	606	int res = eio_poll ();
588	wrk->next = wrk_first.next;	607
589	wrk_first.next->prev = wrk;	608	if (res > 0)
590	wrk_first.next = wrk;	609	croak (0);
591	started++;	610
		611	if (!max_outstanding || max_outstanding > eio_nreqs ())
		612	return res;
		613
		614	poll_wait ();
592	}	615	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	616	}
599		617
600	static void req_send (aio_req req)	618	static void atfork_child (void)
601	{	619	{
602	while (started < wanted && nreqs >= started)	620	create_respipe ();
603	start_thread ();
604
605	++nreqs;
606
607	LOCK (reqlock);
608	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);
610	UNLOCK (reqlock);
611	}
612
613	static void end_thread (void)
614	{
615	aio_req req;
616
617	Newz (0, req, 1, aio_cb);
618
619	req->type = REQ_QUIT;
620	req->pri = PRI_MAX + PRI_BIAS;
621
622	req_send (req);
623	}
624
625	static void min_parallel (int nthreads)
626	{
627	if (wanted < nthreads)
628	wanted = nthreads;
629	}
630
631	static void max_parallel (int nthreads)
632	{
633	int cur = started;
634
635	if (wanted > nthreads)
636	wanted = nthreads;
637
638	while (cur > wanted)
639	{
640	end_thread ();
641	cur--;
642	}
643
644	while (started > wanted)
645	{
646	poll_wait ();
647	poll_cb (0);
648	}
649	}
650
651	static void create_pipe ()
652	{
653	if (pipe (respipe))
654	croak ("unable to initialize result pipe");
655
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
657	croak ("cannot set result pipe to nonblocking mode");
658
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
660	croak ("cannot set result pipe to nonblocking mode");
661	}	621	}
662		622
663	/*****************************************************************************/	623	/*****************************************************************************/
664	/* work around various missing functions */
665		624
666	#if !HAVE_PREADWRITE	625	#if !_POSIX_MAPPED_FILES
667	# define pread aio_pread	626	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
668	# define pwrite aio_pwrite	627	# define munmap(addr,length) (errno = ENOSYS, -1)
669
670	/*
671	* make our pread/pwrite safe against themselves, but not against
672	* normal read/write by using a mutex. slows down execution a lot,
673	* but that's your problem, not mine.
674	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
676
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
678	{
679	ssize_t res;
680	off_t ooffset;
681
682	LOCK (preadwritelock);
683	ooffset = lseek (fd, 0, SEEK_CUR);
684	lseek (fd, offset, SEEK_SET);
685	res = read (fd, buf, count);
686	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);
688
689	return res;
690	}
691
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
693	{
694	ssize_t res;
695	off_t ooffset;
696
697	LOCK (preadwritelock);
698	ooffset = lseek (fd, 0, SEEK_CUR);
699	lseek (fd, offset, SEEK_SET);
700	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);
703
704	return res;
705	}
706	#endif
707
708	#if !HAVE_FDATASYNC
709	# define fdatasync fsync
710	#endif
711
712	#if !HAVE_READAHEAD
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
714
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
716	{
717	dBUF;
718
719	while (count > 0)
720	{
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
722
723	pread (fd, aio_buf, len, offset);
724	offset += len;
725	count -= len;
726	}
727
728	errno = 0;
729	}
730
731	#endif
732
733	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r
735
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
737
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
739	{
740	struct dirent *e;
741	int errorno;
742
743	LOCK (readdirlock);
744
745	e = readdir (dirp);
746	errorno = errno;
747
748	if (e)
749	{
750	*res = ent;
751	strcpy (ent->d_name, e->d_name);
752	}
753	else
754	*res = 0;
755
756	UNLOCK (readdirlock);
757
758	errno = errorno;
759	return e ? 0 : -1;
760	}
761	#endif
762
763	/* sendfile always needs emulation */
764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
765	{
766	ssize_t res;
767
768	if (!count)
769	return 0;
770
771	#if HAVE_SENDFILE
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774
775	# elif __freebsd
776	/*
777	* Of course, the freebsd sendfile is a dire hack with no thoughts
778	* wasted on making it similar to other I/O functions.
779	*/
780	{
781	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783
784	if (res < 0 && sbytes)
785	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
786	res = sbytes;
787	}
788
789	# elif __hpux
790	res = sendfile (ofd, ifd, offset, count, 0, 0);
791
792	# elif __solaris
793	{
794	struct sendfilevec vec;
795	size_t sbytes;
796
797	vec.sfv_fd = ifd;
798	vec.sfv_flag = 0;
799	vec.sfv_off = offset;
800	vec.sfv_len = count;
801
802	res = sendfilev (ofd, &vec, 1, &sbytes);
803
804	if (res < 0 && sbytes)
805	res = sbytes;
806	}
807
808	# endif	628	#endif
809	#else
810	res = -1;
811	errno = ENOSYS;
812	#endif
813		629
814	if (res < 0	630	#define MMAP_MAGIC PERL_MAGIC_ext
815	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
816	#if __solaris
817	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
818	#endif
819	)
820	)
821	{
822	/* emulate sendfile. this is a major pain in the ass */
823	dBUF;
824		631
825	res = 0;	632	static int
		633	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		634	{
		635	int old_errno = errno;
		636	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		637	errno = old_errno;
826		638
827	while (count)	639	mg->mg_obj = 0; /* just in case */
828	{
829	ssize_t cnt;
830
831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
832		640
833	if (cnt <= 0)	641	SvREADONLY_off (sv);
834	{
835	if (cnt && !res) res = -1;
836	break;
837	}
838		642
839	cnt = write (ofd, aio_buf, cnt);	643	if (SvPVX (sv) != mg->mg_ptr)
		644	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
840		645
841	if (cnt <= 0)	646	SvCUR_set (sv, 0);
842	{	647	SvPVX (sv) = 0;
843	if (cnt && !res) res = -1;	648	SvOK_off (sv);
844	break;
845	}
846		649
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;	650	return 0;
854	}	651	}
855		652
856	/* read a full directory */	653	static MGVTBL mmap_vtbl = {
857	static void scandir_ (aio_req req, worker *self)	654	0, 0, 0, 0, mmap_free
858	{	655	};
859	DIR *dirp;
860	union
861	{
862	struct dirent d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
864	} *u;
865	struct dirent *entp;
866	char *name, *names;
867	int memlen = 4096;
868	int memofs = 0;
869	int res = 0;
870	int errorno;
871
872	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);
874	self->dbuf = u = malloc (sizeof (*u));
875	req->data2ptr = names = malloc (memlen);
876	UNLOCK (wrklock);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916		656
917	/*****************************************************************************/	657	/*****************************************************************************/
918		658
919	static void *aio_proc (void *thr_arg)	659	static SV *
		660	get_cb (SV *cb_sv)
920	{	661	{
921	aio_req req;	662	SvGETMAGIC (cb_sv);
922	int type;	663	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}	664	}
1069		665
1070	#define dREQ \	666	#define dREQ \
		667	SV *cb_cv; \
1071	aio_req req; \	668	aio_req req; \
1072	int req_pri = next_pri; \	669	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	670	next_pri = EIO_PRI_DEFAULT; \
1074	\	671	\
1075	if (SvOK (callback) && !SvROK (callback)) \	672	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	673	\
1078	Newz (0, req, 1, aio_cb); \	674	Newz (0, req, 1, eio_req); \
1079	if (!req) \	675	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	676	croak ("out of memory during eio_req allocation"); \
1081	\	677	\
1082	req->callback = newSVsv (callback); \	678	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	679	req->pri = req_pri
1084		680
1085	#define REQ_SEND \	681	#define REQ_SEND \
		682	PUTBACK; \
1086	req_send (req); \	683	req_submit (req); \
		684	SPAGAIN; \
1087	\	685	\
1088	if (GIMME_V != G_VOID) \	686	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	687	XPUSHs (req_sv (req, aio_req_stash));
1090		688
1091	MODULE = IO::AIO PACKAGE = IO::AIO	689	MODULE = IO::AIO PACKAGE = IO::AIO
1092		690
1093	PROTOTYPES: ENABLE	691	PROTOTYPES: ENABLE
1094		692
1095	BOOT:	693	BOOT:
1096	{	694	{
		695	static const struct {
		696	const char *name;
		697	IV iv;
		698	} *civ, const_iv[] = {
		699	# define const_niv(name, value) { # name, (IV) value },
		700	# define const_iv(name) { # name, (IV) name },
		701	# define const_eio(name) { # name, (IV) EIO_ ## name },
		702	const_iv (EXDEV)
		703	const_iv (ENOSYS)
		704	const_iv (O_RDONLY)
		705	const_iv (O_WRONLY)
		706	const_iv (O_RDWR)
		707	const_iv (O_CREAT)
		708	const_iv (O_TRUNC)
		709	const_iv (O_EXCL)
		710	const_iv (O_APPEND)
		711	#ifndef _WIN32
		712	const_iv (S_IFIFO)
		713	#endif
		714	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		715	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		716	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		717	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		718	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		719	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		720
		721	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		722	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		723	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		724	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		725	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		726
		727	const_iv (ST_RDONLY)
		728	const_iv (ST_NOSUID)
		729	const_iv (ST_NODEV)
		730	const_iv (ST_NOEXEC)
		731	const_iv (ST_SYNCHRONOUS)
		732	const_iv (ST_MANDLOCK)
		733	const_iv (ST_WRITE)
		734	const_iv (ST_APPEND)
		735	const_iv (ST_IMMUTABLE)
		736	const_iv (ST_NOATIME)
		737	const_iv (ST_NODIRATIME)
		738	const_iv (ST_RELATIME)
		739
		740	const_iv (PROT_EXEC)
		741	const_iv (PROT_NONE)
		742	const_iv (PROT_READ)
		743	const_iv (PROT_WRITE)
		744
		745	/*const_iv (MAP_FIXED)*/
		746	const_iv (MAP_PRIVATE)
		747	const_iv (MAP_SHARED)
		748	const_iv (MAP_ANONYMOUS)
		749
		750	/* linuxish */
		751	const_iv (MAP_HUGETLB)
		752	const_iv (MAP_LOCKED)
		753	const_iv (MAP_NORESERVE)
		754	const_iv (MAP_POPULATE)
		755	const_iv (MAP_NONBLOCK)
		756
		757	const_iv (MCL_FUTURE)
		758	const_iv (MCL_CURRENT)
		759
		760	const_eio (MS_ASYNC)
		761	const_eio (MS_INVALIDATE)
		762	const_eio (MS_SYNC)
		763
		764	const_eio (MT_MODIFY)
		765
		766	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		767	const_eio (SYNC_FILE_RANGE_WRITE)
		768	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		769
		770	const_eio (READDIR_DENTS)
		771	const_eio (READDIR_DIRS_FIRST)
		772	const_eio (READDIR_STAT_ORDER)
		773	const_eio (READDIR_FOUND_UNKNOWN)
		774
		775	const_eio (DT_UNKNOWN)
		776	const_eio (DT_FIFO)
		777	const_eio (DT_CHR)
		778	const_eio (DT_DIR)
		779	const_eio (DT_BLK)
		780	const_eio (DT_REG)
		781	const_eio (DT_LNK)
		782	const_eio (DT_SOCK)
		783	const_eio (DT_WHT)
		784	};
		785
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	786	aio_stash = gv_stashpv ("IO::AIO" , 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	787	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	788	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101		789
		790	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		791	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		792
		793	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		794
1102	create_pipe ();	795	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		796
		797	if (eio_init (want_poll, done_poll) < 0)
		798	croak ("IO::AIO: unable to initialise eio library");
		799
		800	/* atfork child called in fifo order, so before eio's handler */
		801	X_THREAD_ATFORK (0, 0, atfork_child);
		802	}
		803
1106	void	804	void
1107	min_parallel (nthreads)	805	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	806	PROTOTYPE: $
		807	CODE:
		808	eio_set_max_poll_reqs (nreqs);
1110		809
1111	void	810	void
1112	max_parallel (nthreads)	811	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	812	PROTOTYPE: $
		813	CODE:
		814	eio_set_max_poll_time (nseconds);
1115		815
1116	void	816	void
		817	min_parallel (int nthreads)
		818	PROTOTYPE: $
		819	CODE:
		820	eio_set_min_parallel (nthreads);
		821
		822	void
		823	max_parallel (int nthreads)
		824	PROTOTYPE: $
		825	CODE:
		826	eio_set_max_parallel (nthreads);
		827
		828	void
		829	max_idle (int nthreads)
		830	PROTOTYPE: $
		831	CODE:
		832	eio_set_max_idle (nthreads);
		833
		834	void
		835	max_outstanding (int maxreqs)
		836	PROTOTYPE: $
		837	CODE:
		838	max_outstanding = maxreqs;
		839
		840	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	841	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	842	PROTOTYPE: $$$;$
1123	PPCODE:	843	PPCODE:
1124	{	844	{
1125	dREQ;	845	dREQ;
1126		846
1127	req->type = REQ_OPEN;	847	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	848	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	849	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	850	req->int1 = flags;
1131	req->mode = mode;	851	req->int2 = mode;
1132		852
1133	REQ_SEND;	853	REQ_SEND;
1134	}	854	}
1135		855
1136	void	856	void
1137	aio_close (fh,callback=&PL_sv_undef)	857	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	858	PROTOTYPE: $;$
1141	ALIAS:	859	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	860	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	861	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	862	PPCODE:
1146	{	863	{
		864	int fd = s_fileno_croak (fh, 0);
1147	dREQ;	865	dREQ;
1148		866
1149	req->type = ix;	867	req->type = ix;
1150	req->fh = newSVsv (fh);	868	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	869	req->int1 = fd;
1152		870
1153	REQ_SEND (req);	871	REQ_SEND (req);
1154	}	872	}
1155		873
1156	void	874	void
		875	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		876	PROTOTYPE: $$$$;$
		877	PPCODE:
		878	{
		879	int fd = s_fileno_croak (fh, 0);
		880	dREQ;
		881
		882	req->type = EIO_SYNC_FILE_RANGE;
		883	req->sv1 = newSVsv (fh);
		884	req->int1 = fd;
		885	req->offs = offset;
		886	req->size = nbytes;
		887	req->int2 = flags;
		888
		889	REQ_SEND (req);
		890	}
		891
		892	void
		893	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		894	PROTOTYPE: $;$
		895	PPCODE:
		896	{
		897	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		898	int fd = s_fileno_croak (fh, 0);
		899	dREQ;
		900
		901	if (close_pipe < 0)
		902	{
		903	int pipefd [2];
		904
		905	if (pipe (pipefd) < 0
		906	|| close (pipefd [1]) < 0
		907	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		908	abort (); /*D*/
		909
		910	close_pipe = pipefd [0];
		911	}
		912
		913	req->type = EIO_DUP2;
		914	req->int1 = close_pipe;
		915	req->sv2 = newSVsv (fh);
		916	req->int2 = fd;
		917
		918	REQ_SEND (req);
		919	}
		920
		921	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	922	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	923	ALIAS:
1165	aio_read = REQ_READ	924	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	925	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	926	PROTOTYPE: $$$$$;$
1168	PPCODE:	927	PPCODE:
1169	{	928	{
1170	aio_req req;
1171	STRLEN svlen;	929	STRLEN svlen;
		930	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	931	char *svptr = SvPVbyte (data, svlen);
1173		932	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		933
1177	if (dataoffset < 0)	934	if (dataoffset < 0)
1178	dataoffset += svlen;	935	dataoffset += svlen;
1179		936
1180	if (dataoffset < 0 || dataoffset > svlen)	937	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	938	croak ("dataoffset outside of data scalar");
1182		939
1183	if (ix == REQ_WRITE)	940	if (ix == EIO_WRITE)
1184	{	941	{
1185	/* write: check length and adjust. */	942	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	943	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	944	len = svlen - dataoffset;
1188	}	945	}
1189	else	946	else
1190	{	947	{
1191	/* read: grow scalar as necessary */	948	/* read: check type and grow scalar as necessary */
		949	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	950	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	951	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		952
1198	{	953	{
1199	dREQ;	954	dREQ;
1200		955
1201	req->type = ix;	956	req->type = ix;
1202	req->fh = newSVsv (fh);	957	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	958	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	959	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	960	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	961	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	962	req->ptr2 = (char *)svptr + dataoffset;
		963	req->stroffset = dataoffset;
1209		964
1210	if (!SvREADONLY (data))	965	if (!SvREADONLY (data))
1211	{	966	{
1212	SvREADONLY_on (data);	967	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	968	req->flags |= FLAG_SV2_RO_OFF;
1214	}	969	}
1215		970
1216	REQ_SEND;	971	REQ_SEND;
1217	}	972	}
1218	}	973	}
1219		974
1220	void	975	void
		976	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		977	PROTOTYPE: $$;$
		978	PPCODE:
		979	{
		980	SV *data;
		981	dREQ;
		982
		983	req->type = EIO_READLINK;
		984	req->sv1 = newSVsv (path);
		985	req->ptr1 = SvPVbyte_nolen (req->sv1);
		986
		987	REQ_SEND;
		988	}
		989
		990	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	991	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	992	PROTOTYPE: $$$$;$
1228	PPCODE:	993	PPCODE:
1229	{	994	{
		995	int ifd = s_fileno_croak (in_fh , 0);
		996	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	997	dREQ;
1231		998
1232	req->type = REQ_SENDFILE;	999	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1000	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1001	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	1002	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1003	req->int2 = ifd;
1237	req->offset = in_offset;	1004	req->offs = in_offset;
1238	req->length = length;	1005	req->size = length;
1239		1006
1240	REQ_SEND;	1007	REQ_SEND;
1241	}	1008	}
1242		1009
1243	void	1010	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1011	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	1012	PROTOTYPE: $$$;$
1250	PPCODE:	1013	PPCODE:
1251	{	1014	{
		1015	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	1016	dREQ;
1253		1017
1254	req->type = REQ_READAHEAD;	1018	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	1019	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1020	req->int1 = fd;
1257	req->offset = offset;	1021	req->offs = offset;
1258	req->length = length;	1022	req->size = length;
1259		1023
1260	REQ_SEND;	1024	REQ_SEND;
1261	}	1025	}
1262		1026
1263	void	1027	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1028	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1029	ALIAS:
1268	aio_stat = REQ_STAT	1030	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1031	aio_lstat = EIO_LSTAT
		1032	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1033	PPCODE:
1271	{	1034	{
1272	dREQ;	1035	dREQ;
1273		1036
1274	New (0, req->statdata, 1, Stat_t);	1037	req->sv1 = newSVsv (fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280		1038
1281	if (SvPOK (fh_or_path))	1039	if (SvPOK (req->sv1))
1282	{	1040	{
1283	req->type = ix;	1041	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	1042	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	1043	}
1287	else	1044	else
1288	{	1045	{
1289	req->type = REQ_FSTAT;	1046	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1047	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1048	}
1293		1049
1294	REQ_SEND;	1050	REQ_SEND;
1295	}	1051	}
1296		1052
1297	void	1053	void
		1054	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1055	PPCODE:
		1056	{
		1057	dREQ;
		1058
		1059	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1060	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1061	req->sv1 = newSVsv (fh_or_path);
		1062
		1063	if (SvPOK (req->sv1))
		1064	{
		1065	req->type = EIO_UTIME;
		1066	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1067	}
		1068	else
		1069	{
		1070	req->type = EIO_FUTIME;
		1071	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1072	}
		1073
		1074	REQ_SEND;
		1075	}
		1076
		1077	void
		1078	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1079	PPCODE:
		1080	{
		1081	dREQ;
		1082
		1083	req->sv1 = newSVsv (fh_or_path);
		1084	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1085
		1086	if (SvPOK (req->sv1))
		1087	{
		1088	req->type = EIO_TRUNCATE;
		1089	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1090	}
		1091	else
		1092	{
		1093	req->type = EIO_FTRUNCATE;
		1094	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1095	}
		1096
		1097	REQ_SEND;
		1098	}
		1099
		1100	void
		1101	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1102	ALIAS:
		1103	aio_chmod = EIO_CHMOD
		1104	aio_mkdir = EIO_MKDIR
		1105	PPCODE:
		1106	{
		1107	dREQ;
		1108
		1109	req->int2 = mode;
		1110	req->sv1 = newSVsv (fh_or_path);
		1111
		1112	if (SvPOK (req->sv1))
		1113	{
		1114	req->type = ix;
		1115	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1116	}
		1117	else
		1118	{
		1119	req->type = EIO_FCHMOD;
		1120	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1121	}
		1122
		1123	REQ_SEND;
		1124	}
		1125
		1126	void
		1127	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1128	PPCODE:
		1129	{
		1130	dREQ;
		1131
		1132	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1133	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1134	req->sv1 = newSVsv (fh_or_path);
		1135
		1136	if (SvPOK (req->sv1))
		1137	{
		1138	req->type = EIO_CHOWN;
		1139	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1140	}
		1141	else
		1142	{
		1143	req->type = EIO_FCHOWN;
		1144	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1145	}
		1146
		1147	REQ_SEND;
		1148	}
		1149
		1150	void
		1151	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1152	PPCODE:
		1153	{
		1154	dREQ;
		1155
		1156	req->type = EIO_READDIR;
		1157	req->sv1 = newSVsv (pathname);
		1158	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1159	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1160
		1161	if (flags & EIO_READDIR_DENTS)
		1162	req->int1 |= EIO_READDIR_CUSTOM2;
		1163
		1164	REQ_SEND;
		1165	}
		1166
		1167	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1168	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1169	ALIAS:
1302	aio_unlink = REQ_UNLINK	1170	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1171	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1172	aio_readdir = EIO_READDIR
1305	PPCODE:	1173	PPCODE:
1306	{	1174	{
1307	dREQ;	1175	dREQ;
1308		1176
1309	req->type = ix;	1177	req->type = ix;
1310	req->data = newSVsv (pathname);	1178	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1179	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1180
1313	REQ_SEND;	1181	REQ_SEND;
1314	}	1182	}
1315		1183
1316	void	1184	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1185	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1186	ALIAS:
1322	aio_link = REQ_LINK	1187	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1188	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1189	aio_rename = EIO_RENAME
1325	PPCODE:	1190	PPCODE:
1326	{	1191	{
1327	dREQ;	1192	dREQ;
1328		1193
1329	req->type = ix;	1194	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1195	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1196	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1197	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1198	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1199
1335	REQ_SEND;	1200	REQ_SEND;
1336	}	1201	}
1337		1202
1338	void	1203	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1204	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1205	PPCODE:
1343	{	1206	{
1344	dREQ;	1207	dREQ;
1345		1208
1346	req->type = REQ_BUSY;	1209	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1210	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1211	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1212	req->int2 = (mode_t)mode;
		1213	req->offs = dev;
		1214
1350	REQ_SEND;	1215	REQ_SEND;
1351	}	1216	}
1352		1217
1353	void	1218	void
		1219	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1220	ALIAS:
		1221	aio_mtouch = EIO_MTOUCH
		1222	aio_msync = EIO_MSYNC
		1223	PROTOTYPE: $$$$;$
		1224	PPCODE:
		1225	{
		1226	STRLEN svlen;
		1227	UV len = SvUV (length);
		1228	char *svptr = SvPVbyte (data, svlen);
		1229
		1230	if (offset < 0)
		1231	offset += svlen;
		1232
		1233	if (offset < 0 || offset > svlen)
		1234	croak ("offset outside of scalar");
		1235
		1236	if (!SvOK (length) || len + offset > svlen)
		1237	len = svlen - offset;
		1238
		1239	{
		1240	dREQ;
		1241
		1242	req->type = ix;
		1243	req->size = len;
		1244	req->sv2 = SvREFCNT_inc (data);
		1245	req->ptr2 = (char *)svptr + offset;
		1246	req->int1 = flags;
		1247
		1248	REQ_SEND;
		1249	}
		1250	}
		1251
		1252	void
		1253	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1254	PPCODE:
		1255	{
		1256	dREQ;
		1257
		1258	req->type = EIO_BUSY;
		1259	req->nv1 = delay < 0. ? 0. : delay;
		1260
		1261	REQ_SEND;
		1262	}
		1263
		1264	void
1354	aio_group (callback=&PL_sv_undef)	1265	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1266	PROTOTYPE: ;$
1357	PPCODE:	1267	PPCODE:
1358	{	1268	{
1359	dREQ;	1269	dREQ;
1360		1270
1361	req->type = REQ_GROUP;	1271	req->type = EIO_GROUP;
		1272
1362	req_send (req);	1273	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1274	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1275	}
1366		1276
1367	void	1277	void
1368	aio_nop (callback=&PL_sv_undef)	1278	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1279	ALIAS:
		1280	aio_nop = EIO_NOP
		1281	aio_sync = EIO_SYNC
1370	PPCODE:	1282	PPCODE:
1371	{	1283	{
1372	dREQ;	1284	dREQ;
1373		1285
1374	req->type = REQ_NOP;	1286	req->type = ix;
1375		1287
1376	REQ_SEND;	1288	REQ_SEND;
1377	}	1289	}
1378		1290
1379	void	1291	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1292	aioreq_pri (int pri = 0)
1381	CODE:	1293	PROTOTYPE: ;$
		1294	CODE:
		1295	RETVAL = next_pri;
		1296	if (items > 0)
		1297	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1298	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1299	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1300	next_pri = pri;
		1301	}
		1302	OUTPUT:
		1303	RETVAL
1385		1304
1386	void	1305	void
1387	aioreq_nice (int nice = 0)	1306	aioreq_nice (int nice = 0)
1388	CODE:	1307	CODE:
1389	nice = next_pri - nice;	1308	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1309	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1310	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1311	next_pri = nice;
1393		1312
1394	void	1313	void
1395	flush ()	1314	flush ()
1396	PROTOTYPE:	1315	PROTOTYPE:
1397	CODE:	1316	CODE:
1398	while (nreqs)	1317	while (eio_nreqs ())
1399	{	1318	{
1400	poll_wait ();	1319	poll_wait ();
1401	poll_cb (0);	1320	poll_cb ();
1402	}	1321	}
1403		1322
1404	void	1323	int
1405	poll()	1324	poll()
1406	PROTOTYPE:	1325	PROTOTYPE:
1407	CODE:	1326	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1327	poll_wait ();
1411	poll_cb (0);	1328	RETVAL = poll_cb ();
1412	}	1329	OUTPUT:
		1330	RETVAL
1413		1331
1414	int	1332	int
1415	poll_fileno()	1333	poll_fileno()
1416	PROTOTYPE:	1334	PROTOTYPE:
1417	CODE:	1335	CODE:
1418	RETVAL = respipe [0];	1336	RETVAL = s_epipe_fd (&respipe);
1419	OUTPUT:	1337	OUTPUT:
1420	RETVAL	1338	RETVAL
1421		1339
1422	int	1340	int
1423	poll_cb(...)	1341	poll_cb(...)
1424	PROTOTYPE:	1342	PROTOTYPE:
1425	CODE:	1343	CODE:
1426	RETVAL = poll_cb (0);	1344	RETVAL = poll_cb ();
1427	OUTPUT:	1345	OUTPUT:
1428	RETVAL	1346	RETVAL
1429		1347
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void	1348	void
1439	poll_wait()	1349	poll_wait()
1440	PROTOTYPE:	1350	PROTOTYPE:
1441	CODE:	1351	CODE:
1442	if (nreqs)
1443	poll_wait ();	1352	poll_wait ();
1444		1353
1445	int	1354	int
1446	nreqs()	1355	nreqs()
1447	PROTOTYPE:	1356	PROTOTYPE:
1448	CODE:	1357	CODE:
1449	RETVAL = nreqs;	1358	RETVAL = eio_nreqs ();
1450	OUTPUT:	1359	OUTPUT:
1451	RETVAL	1360	RETVAL
1452		1361
		1362	int
		1363	nready()
		1364	PROTOTYPE:
		1365	CODE:
		1366	RETVAL = eio_nready ();
		1367	OUTPUT:
		1368	RETVAL
		1369
		1370	int
		1371	npending()
		1372	PROTOTYPE:
		1373	CODE:
		1374	RETVAL = eio_npending ();
		1375	OUTPUT:
		1376	RETVAL
		1377
		1378	int
		1379	nthreads()
		1380	PROTOTYPE:
		1381	CODE:
		1382	RETVAL = eio_nthreads ();
		1383	OUTPUT:
		1384	RETVAL
		1385
		1386	int
		1387	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1388	PROTOTYPE: $$$$
		1389	CODE:
		1390	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1391	RETVAL = posix_fadvise (fh, offset, length, advice);
		1392	#else
		1393	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1394	#endif
		1395	OUTPUT:
		1396	RETVAL
		1397
		1398	ssize_t
		1399	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1400	PROTOTYPE: $$$$
		1401	CODE:
		1402	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1403	OUTPUT:
		1404	RETVAL
		1405
		1406	void
		1407	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1408	PROTOTYPE: $$$$$;$
		1409	PPCODE:
		1410	sv_unmagic (scalar, MMAP_MAGIC);
		1411	{
		1412	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1413	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1414	if (addr == (void *)-1)
		1415	XSRETURN_NO;
		1416
		1417	sv_force_normal (scalar);
		1418
		1419	/* we store the length in mg_obj, as namlen is I32 :/ */
		1420	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1421	->mg_obj = (SV *)length;
		1422
		1423	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1424
		1425	if (!(prot & PROT_WRITE))
		1426	SvREADONLY_on (scalar);
		1427
		1428	if (SvLEN (scalar))
		1429	Safefree (SvPVX (scalar));
		1430
		1431	SvPVX (scalar) = (char *)addr;
		1432	SvCUR_set (scalar, length);
		1433	SvLEN_set (scalar, 0);
		1434	SvPOK_only (scalar);
		1435
		1436	XSRETURN_YES;
		1437	}
		1438
		1439	void
		1440	munmap (SV *scalar)
		1441	PROTOTYPE: $
		1442	CODE:
		1443	sv_unmagic (scalar, MMAP_MAGIC);
		1444
		1445	int
		1446	madvise (SV *scalar, off_t offset, off_t length, IV advice)
		1447	PROTOTYPE: $$$$
		1448	CODE:
		1449	{
		1450	char *addr = SvPV_nolen (scalar) + offset;
		1451
		1452	if (!SvOK (ST (2)))
		1453	length = SvCUR (scalar) - offset;
		1454
		1455	if (addr >= SvEND (scalar) || length <= 0)
		1456	XSRETURN_EMPTY;
		1457
		1458	#if _XOPEN_SOURCE >= 600 && !NO_MADVISE
		1459	RETVAL = posix_madvise (addr, length, advice);
		1460	#else
		1461	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1462	#endif
		1463	}
		1464	OUTPUT:
		1465	RETVAL
		1466
		1467	int
		1468	mlockall (int flags)
		1469	PROTOTYPE: $
		1470	CODE:
		1471	#if _POSIX_MEMLOCK
		1472	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1473	extern int mallopt (int, int);
		1474	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1475	#endif
		1476	mlockall (flags);
		1477	#else
		1478	RETVAL = -1;
		1479	errno = ENOSYS;
		1480	#endif
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	int
		1485	munlockall ()
		1486	PROTOTYPE:
		1487	CODE:
		1488	#if _POSIX_MEMLOCK
		1489	munlockall ();
		1490	#else
		1491	RETVAL = -1;
		1492	errno = ENOSYS;
		1493	#endif
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void _on_next_submit (SV *cb)
		1498	CODE:
		1499	SvREFCNT_dec (on_next_submit);
		1500	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1501
1453	PROTOTYPES: DISABLE	1502	PROTOTYPES: DISABLE
1454		1503
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1504	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1505
1457	void	1506	void
1458	cancel (aio_req_ornot req)	1507	cancel (aio_req_ornot req)
1459	CODE:	1508	CODE:
1460	req_cancel (req);	1509	eio_cancel (req);
1461		1510
1462	void	1511	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1512	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1513	PPCODE:
		1514	{
		1515	if (GIMME_V != G_VOID)
		1516	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1517
		1518	if (items > 1)
		1519	{
		1520	SV *cb_cv =get_cb (callback);
		1521
1465	SvREFCNT_dec (req->callback);	1522	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1523	req->callback = SvREFCNT_inc (cb_cv);
		1524	}
		1525	}
1467		1526
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1528
1470	void	1529	void
1471	add (aio_req grp, ...)	1530	add (aio_req grp, ...)
1472	PPCODE:	1531	PPCODE:
1473	{	1532	{
1474	int i;	1533	int i;
1475	aio_req req;
1476		1534
1477	if (grp->fd == 2)	1535	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1536	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1537
1480	for (i = 1; i < items; ++i )	1538	for (i = 1; i < items; ++i )
1481	{	1539	{
		1540	aio_req req;
		1541
1482	if (GIMME_V != G_VOID)	1542	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1543	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1544
1485	req = SvAIO_REQ (ST (i));	1545	req = SvAIO_REQ (ST (i));
1486		1546
1487	if (req)	1547	if (req)
1488	{	1548	eio_grp_add (grp, req);
1489	++grp->length;
1490	req->grp = grp;
1491
1492	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;
1494
1495	if (grp->grp_first)
1496	grp->grp_first->grp_prev = req;
1497
1498	grp->grp_first = req;
1499	}
1500	}	1549	}
1501	}	1550	}
1502		1551
1503	void	1552	void
1504	cancel_subs (aio_req_ornot req)	1553	cancel_subs (aio_req_ornot req)
…		…
1508	void	1557	void
1509	result (aio_req grp, ...)	1558	result (aio_req grp, ...)
1510	CODE:	1559	CODE:
1511	{	1560	{
1512	int i;	1561	int i;
		1562	AV *av;
		1563
		1564	grp->errorno = errno;
		1565
1513	AV *av = newAV ();	1566	av = newAV ();
		1567	av_extend (av, items - 1);
1514		1568
1515	for (i = 1; i < items; ++i )	1569	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1570	av_push (av, newSVsv (ST (i)));
1517		1571
1518	SvREFCNT_dec (grp->data);	1572	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1573	grp->sv1 = (SV *)av;
1520	}	1574	}
		1575
		1576	void
		1577	errno (aio_req grp, int errorno = errno)
		1578	CODE:
		1579	grp->errorno = errorno;
1521		1580
1522	void	1581	void
1523	limit (aio_req grp, int limit)	1582	limit (aio_req grp, int limit)
1524	CODE:	1583	CODE:
1525	grp->fd2 = limit;	1584	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1585
1528	void	1586	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1587	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1588	CODE:
1531	{	1589	{
1532	SvREFCNT_dec (grp->fh2);	1590	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1591	grp->sv2 = newSVsv (callback);
		1592	grp->feed = aio_grp_feed;
1534		1593
1535	if (grp->fd2 <= 0)	1594	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1595	grp->int2 = 2;
1537		1596
1538	aio_grp_feed (grp);	1597	eio_grp_limit (grp, grp->int2);
1539	}	1598	}
1540		1599

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