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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.77 by root, Thu Oct 26 13:25:40 2006 UTC vs.
Revision 1.165 by root, Sun May 9 20:42:55 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 ST_NODEV
		146	# define ST_NODEV 0
		147	#endif
		148	#ifndef ST_NOEXEC
		149	# define ST_NOEXEC 0
		150	#endif
		151	#ifndef ST_SYNCHRONOUS
		152	# define ST_SYNCHRONOUS 0
		153	#endif
		154	#ifndef ST_MANDLOCK
		155	# define ST_MANDLOCK 0
		156	#endif
		157	#ifndef ST_WRITE
		158	# define ST_WRITE 0
		159	#endif
		160	#ifndef ST_APPEND
		161	# define ST_APPEND 0
		162	#endif
		163	#ifndef ST_IMMUTABLE
		164	# define ST_IMMUTABLE 0
		165	#endif
		166	#ifndef ST_NOATIME
		167	# define ST_NOATIME 0
		168	#endif
		169	#ifndef ST_NODIRATIME
		170	# define ST_NODIRATIME 0
		171	#endif
		172	#ifndef ST_RELATIME
		173	# define ST_RELATIME 0
		174	#endif
		175
		176	#ifndef MCL_CURRENT
		177	# define MCL_CURRENT 0
		178	#endif
		179	#ifndef MCL_FUTURE
		180	# define MCL_FUTURE 0
		181	#endif
		182
		183	#ifndef MAP_ANONYMOUS
		184	# ifdef MAP_ANON
		185	# define MAP_ANONYMOUS MAP_ANON
43	# else	186	# else
44	# error sendfile support requested but not available	187	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	188	# endif
46	#endif	189	#endif
47		190	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	191	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif	192	#endif
52		193	#ifndef MAP_LOCKED
53	#ifndef PTHREAD_STACK_MIN	194	# define MAP_LOCKED 0
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif	195	#endif
57		196	#ifndef MAP_NORESERVE
58	#if __ia64	197	# 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	198	#endif
		199	#ifndef MAP_POPULATE
		200	# define MAP_POPULATE 0
		201	#endif
		202	#ifndef MAP_NONBLOCK
		203	# define MAP_NONBLOCK 0
		204	#endif
65		205
66	/* buffer size for various temporary buffers */	206	#ifndef PAGESIZE
67	#define AIO_BUFSIZE 65536	207	# define PAGESIZE sysconf (_SC_PAGESIZE)
		208	#endif
68		209
69	#define dBUF \	210	static int req_invoke (eio_req *req);
70	char *aio_buf; \	211	#define EIO_FINISH(req) req_invoke (req)
71	LOCK (wrklock); \	212	static void req_destroy (eio_req *grp);
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	213	#define EIO_DESTROY(req) req_destroy (req)
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76		214
77	enum {	215	enum {
78	REQ_QUIT,	216	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	};	217	};
90		218
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"
93		220
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;	221	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
125		223
126	enum {	224	static SV *on_next_submit;
127	PRI_MIN = -4,	225	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	226	static int max_outstanding;
129		227
130	DEFAULT_PRI = 0,	228	static s_epipe respipe;
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		229
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);	230	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	231	static void req_cancel (aio_req req);
252		232
		233	static void want_poll (void)
		234	{
		235	/* write a dummy byte to the pipe so fh becomes ready */
		236	s_epipe_signal (&respipe);
		237	}
		238
		239	static void done_poll (void)
		240	{
		241	/* read any signals sent by the worker threads */
		242	s_epipe_drain (&respipe);
		243	}
		244
253	/* must be called at most once */	245	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
255	{	247	{
256	if (!req->self)	248	if (!req->self)
257	{	249	{
258	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260	}	252	}
261		253
262	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263	}	255	}
264		256
265	static aio_req SvAIO_REQ (SV *sv)	257	static aio_req SvAIO_REQ (SV *sv)
266	{	258	{
267	MAGIC *mg;	259	MAGIC *mg;
268		260
269	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	261	if (!SvROK (sv)
		262	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		263	&& SvSTASH (SvRV (sv)) != aio_req_stash
		264	&& !sv_derived_from (sv, "IO::AIO::REQ")))
270	croak ("object of class " AIO_REQ_KLASS " expected");	265	croak ("object of class IO::AIO::REQ expected");
271		266
272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273		268
274	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	270	}
276		271
277	static void aio_grp_feed (aio_req grp)	272	static void aio_grp_feed (aio_req grp)
278	{	273	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	274	if (grp->sv2 && SvOK (grp->sv2))
280	{	275	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	276	dSP;
286		277
287	ENTER;	278	ENTER;
288	SAVETMPS;	279	SAVETMPS;
289	PUSHMARK (SP);	280	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	281	XPUSHs (req_sv (grp, aio_grp_stash));
291	PUTBACK;	282	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	284	SPAGAIN;
294	FREETMPS;	285	FREETMPS;
295	LEAVE;	286	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	}	287	}
306	}	288	}
307		289
308	static void aio_grp_dec (aio_req grp)	290	static void req_submit (eio_req *req)
309	{	291	{
310	--grp->length;	292	eio_submit (req);
311		293
312	/* call feeder, if applicable */	294	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	295	{
318	req_invoke (grp);	296	dSP;
319	req_free (grp);	297	SV *cb = sv_2mortal (on_next_submit);
		298
		299	on_next_submit = 0;
		300
		301	PUSHMARK (SP);
		302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
320	}	304	}
321	}	305	}
322		306
323	static void poll_wait ()	307	static int req_invoke (eio_req *req)
324	{	308	{
325	fd_set rfd;	309	dSP;
326		310
327	while (nreqs)	311	if (req->flags & FLAG_SV2_RO_OFF)
		312	SvREADONLY_off (req->sv2);
		313
		314	if (!EIO_CANCELLED (req) && req->callback)
328	{	315	{
329	int size;	316	static SV *sv_result_cache; /* caches the result integer SV */
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */	317	SV *sv_result;
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;
351
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353	{
354	errno = req->errorno;
355		318
356	ENTER;	319	ENTER;
357	SAVETMPS;	320	SAVETMPS;
358	PUSHMARK (SP);	321	PUSHMARK (SP);
359	EXTEND (SP, 1);	322	EXTEND (SP, 1);
360		323
		324	/* do not recreate the result IV from scratch each time */
		325	if (expect_true (sv_result_cache))
		326	{
		327	sv_result = sv_result_cache; sv_result_cache = 0;
		328	SvIV_set (sv_result, req->result);
		329	}
		330	else
		331	{
		332	sv_result = newSViv (req->result);
		333	SvREADONLY_on (sv_result);
		334	}
		335
361	switch (req->type)	336	switch (req->type)
362	{	337	{
363	case REQ_READDIR:	338	case EIO_READDIR:
364	{	339	{
365	SV *rv = &PL_sv_undef;	340	SV *rv = &PL_sv_undef;
366		341
367	if (req->result >= 0)	342	if (req->result >= 0)
368	{	343	{
369	int i;	344	int i;
370	char *buf = req->data2ptr;	345	char *names = (char *)req->ptr2;
		346	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	347	AV *av = newAV ();
372		348
373	av_extend (av, req->result - 1);	349	av_extend (av, req->result - 1);
374		350
375	for (i = 0; i < req->result; ++i)	351	for (i = 0; i < req->result; ++i)
376	{	352	{
377	SV *sv = newSVpv (buf, 0);	353	if (req->int1 & EIO_READDIR_DENTS)
		354	{
		355	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		356
		357	if (req->int1 & EIO_READDIR_CUSTOM2)
		358	{
		359	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		360	AV *avent = newAV ();
		361
		362	av_extend (avent, 2);
		363
		364	if (!sv_type [ent->type])
		365	{
		366	sv_type [ent->type] = newSViv (ent->type);
		367	SvREADONLY_on (sv_type [ent->type]);
		368	}
		369
		370	av_store (avent, 0, namesv);
		371	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		372	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		373
		374	av_store (av, i, newRV_noinc ((SV *)avent));
		375	}
		376	else
379	av_store (av, i, sv);	377	av_store (av, i, namesv);
		378
		379	++ent;
		380	}
		381	else
		382	{
		383	SV *name = newSVpv (names, 0);
		384	av_store (av, i, name);
380	buf += SvCUR (sv) + 1;	385	names += SvCUR (name) + 1;
		386	}
381	}	387	}
382		388
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	389	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	390	}
385		391
386	PUSHs (rv);	392	PUSHs (rv);
		393
		394	if (req->int1 & EIO_READDIR_CUSTOM1)
		395	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
387	}	396	}
388	break;	397	break;
389		398
390	case REQ_OPEN:	399	case EIO_OPEN:
391	{	400	{
392	/* convert fd to fh */	401	/* convert fd to fh */
393	SV *fh;	402	SV *fh = &PL_sv_undef;
394		403
395	PUSHs (sv_2mortal (newSViv (req->result)));	404	if (req->result >= 0)
396	PUTBACK;	405	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	406	GV *gv = (GV *)sv_newmortal ();
398	SPAGAIN;	407	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		408	char sym [64];
		409	int symlen;
		410
		411	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		412	gv_init (gv, aio_stash, sym, symlen, 0);
399		413
400	fh = SvREFCNT_inc (POPs);	414	symlen = snprintf (
		415	sym,
		416	sizeof (sym),
		417	"%s&=%d",
		418	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		419	(int)req->result
		420	);
401		421
		422	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		423	fh = (SV *)gv;
		424	}
		425
402	PUSHMARK (SP);	426	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	427	}
405	break;	428	break;
406		429
		430	case EIO_STATVFS:
		431	case EIO_FSTATVFS:
		432	{
		433	SV *rv = &PL_sv_undef;
		434
		435	if (req->result >= 0)
		436	{
		437	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		438	HV *hv = newHV ();
		439
		440	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		441
		442	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		443	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		444	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		445	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		446	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		447	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		448	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		449	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		450	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		451	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		452	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		453	}
		454
		455	PUSHs (rv);
		456	}
		457
		458	break;
		459
407	case REQ_GROUP:	460	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	461	req->int1 = 2; /* mark group as finished */
409		462
410	if (req->data)	463	if (req->sv1)
411	{	464	{
412	int i;	465	int i;
413	AV *av = (AV *)req->data;	466	AV *av = (AV *)req->sv1;
414		467
415	EXTEND (SP, AvFILL (av) + 1);	468	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	469	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	470	PUSHs (*av_fetch (av, i, 0));
418	}	471	}
419	break;	472	break;
420		473
421	case REQ_NOP:	474	case EIO_NOP:
422	case REQ_BUSY:	475	case EIO_BUSY:
423	break;	476	break;
424		477
		478	case EIO_READLINK:
		479	if (req->result > 0)
		480	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		481	break;
		482
		483	case EIO_STAT:
		484	case EIO_LSTAT:
		485	case EIO_FSTAT:
		486	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		487	PL_laststatval = req->result;
		488	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		489	PUSHs (sv_result);
		490	break;
		491
		492	case EIO_READ:
		493	{
		494	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		495	*SvEND (req->sv2) = 0;
		496	SvPOK_only (req->sv2);
		497	SvSETMAGIC (req->sv2);
		498	PUSHs (sv_result);
		499	}
		500	break;
		501
		502	case EIO_DUP2:
		503	if (req->result > 0)
		504	SvIV_set (sv_result, 0);
		505	/* FALLTHROUGH */
		506
425	default:	507	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	508	PUSHs (sv_result);
427	break;	509	break;
428	}	510	}
429		511
		512	errno = req->errorno;
430		513
431	PUTBACK;	514	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	515	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	516	SPAGAIN;
		517
		518	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		519	SvREFCNT_dec (sv_result);
		520	else
		521	sv_result_cache = sv_result;
434		522
435	FREETMPS;	523	FREETMPS;
436	LEAVE;	524	LEAVE;
		525
		526	PUTBACK;
437	}	527	}
438		528
439	if (req->grp)	529	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	}	530	}
459		531
460	static void req_free (aio_req req)	532	static void req_destroy (aio_req req)
461	{	533	{
462	if (req->self)	534	if (req->self)
463	{	535	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	536	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	537	SvREFCNT_dec (req->self);
466	}	538	}
467		539
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	540	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	541	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	542	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476		543
477	Safefree (req);	544	Safefree (req);
478	}	545	}
479		546
480	static void req_cancel_subs (aio_req grp)	547	static void req_cancel_subs (aio_req grp)
481	{	548	{
482	aio_req sub;	549	aio_req sub;
483		550
484	if (grp->type != REQ_GROUP)	551	if (grp->type != EIO_GROUP)
485	return;	552	return;
486		553
487	SvREFCNT_dec (grp->fh2);	554	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	555	grp->sv2 = 0;
489		556
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	557	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	558	}
493		559
494	static void req_cancel (aio_req req)	560	static void
		561	create_respipe (void)
495	{	562	{
496	req->flags |= FLAG_CANCELLED;	563	if (s_epipe_renew (&respipe))
497		564	croak ("IO::AIO: unable to initialize result pipe");
498	req_cancel_subs (req);
499	}	565	}
500		566
501	static int poll_cb (int max)	567	static void poll_wait (void)
502	{	568	{
503	dSP;	569	while (eio_nreqs ())
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507
508	while (max <= 0 || count < max)
509	{	570	{
		571	int size;
		572
510	LOCK (reslock);	573	X_LOCK (reslock);
511	req = reqq_shift (&res_queue);	574	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);	575	X_UNLOCK (reslock);
525		576
526	if (!req)	577	if (size)
527	break;	578	return;
528		579
529	--nreqs;	580	etp_maybe_start_thread ();
530		581
531	if (req->type == REQ_QUIT)	582	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	}	583	}
560
561	return count;
562	}	584	}
563		585
564	static void *aio_proc(void *arg);	586	static int poll_cb (void)
565
566	static void start_thread (void)
567	{	587	{
568	sigset_t fullsigset, oldsigset;	588	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	{	589	{
587	wrk->prev = &wrk_first;	590	int res = eio_poll ();
588	wrk->next = wrk_first.next;	591
589	wrk_first.next->prev = wrk;	592	if (res > 0)
590	wrk_first.next = wrk;	593	croak (0);
591	started++;	594
		595	if (!max_outstanding || max_outstanding > eio_nreqs ())
		596	return res;
		597
		598	poll_wait ();
592	}	599	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	600	}
599		601
600	static void req_send (aio_req req)	602	static void atfork_child (void)
601	{	603	{
602	while (started < wanted && nreqs >= started)	604	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	}	605	}
662		606
663	/*****************************************************************************/	607	/*****************************************************************************/
664	/* work around various missing functions */
665		608
666	#if !HAVE_PREADWRITE	609	#if !_POSIX_MAPPED_FILES
667	# define pread aio_pread	610	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
668	# define pwrite aio_pwrite	611	# 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: 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	612	#endif
809	#else
810	res = -1;
811	errno = ENOSYS;
812	#endif
813		613
814	if (res < 0	614	#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		615
825	res = 0;	616	static int
		617	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		618	{
		619	int old_errno = errno;
		620	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		621	errno = old_errno;
826		622
827	while (count)	623	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		624
833	if (cnt <= 0)	625	SvREADONLY_off (sv);
834	{	626	SvCUR_set (sv, 0);
835	if (cnt && !res) res = -1;	627	SvLEN_set (sv, 0);
836	break;	628	SvPVX (sv) = 0;
837	}	629	SvOK_off (sv);
838		630
839	cnt = write (ofd, aio_buf, cnt);
840
841	if (cnt <= 0)
842	{
843	if (cnt && !res) res = -1;
844	break;
845	}
846
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;	631	return 0;
854	}	632	}
855		633
856	/* read a full directory */	634	static MGVTBL mmap_vtbl = {
857	static void scandir_ (aio_req req, worker *self)	635	0, 0, 0, 0, mmap_free
858	{	636	};
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		637
917	/*****************************************************************************/	638	/*****************************************************************************/
918		639
919	static void *aio_proc (void *thr_arg)	640	static SV *
		641	get_cb (SV *cb_sv)
920	{	642	{
921	aio_req req;	643	SvGETMAGIC (cb_sv);
922	int type;	644	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	}	645	}
1069		646
1070	#define dREQ \	647	#define dREQ \
		648	SV *cb_cv; \
1071	aio_req req; \	649	aio_req req; \
1072	int req_pri = next_pri; \	650	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	651	next_pri = EIO_PRI_DEFAULT; \
1074	\	652	\
1075	if (SvOK (callback) && !SvROK (callback)) \	653	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	654	\
1078	Newz (0, req, 1, aio_cb); \	655	Newz (0, req, 1, eio_req); \
1079	if (!req) \	656	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	657	croak ("out of memory during eio_req allocation"); \
1081	\	658	\
1082	req->callback = newSVsv (callback); \	659	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	660	req->pri = req_pri
1084		661
1085	#define REQ_SEND \	662	#define REQ_SEND \
		663	PUTBACK; \
1086	req_send (req); \	664	req_submit (req); \
		665	SPAGAIN; \
1087	\	666	\
1088	if (GIMME_V != G_VOID) \	667	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	668	XPUSHs (req_sv (req, aio_req_stash));
1090		669
1091	MODULE = IO::AIO PACKAGE = IO::AIO	670	MODULE = IO::AIO PACKAGE = IO::AIO
1092		671
1093	PROTOTYPES: ENABLE	672	PROTOTYPES: ENABLE
1094		673
1095	BOOT:	674	BOOT:
1096	{	675	{
		676	static const struct {
		677	const char *name;
		678	IV iv;
		679	} *civ, const_iv[] = {
		680	# define const_niv(name, value) { # name, (IV) value },
		681	# define const_iv(name) { # name, (IV) name },
		682	# define const_eio(name) { # name, (IV) EIO_ ## name },
		683	const_iv (EXDEV)
		684	const_iv (ENOSYS)
		685	const_iv (O_RDONLY)
		686	const_iv (O_WRONLY)
		687	const_iv (O_RDWR)
		688	const_iv (O_CREAT)
		689	const_iv (O_TRUNC)
		690	const_iv (O_EXCL)
		691	const_iv (O_APPEND)
		692	#ifndef _WIN32
		693	const_iv (S_IFIFO)
		694	#endif
		695	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		696	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		697	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		698	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		699	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		700	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		701
		702	const_iv (ST_RDONLY)
		703	const_iv (ST_NOSUID)
		704	const_iv (ST_NODEV)
		705	const_iv (ST_NOEXEC)
		706	const_iv (ST_SYNCHRONOUS)
		707	const_iv (ST_MANDLOCK)
		708	const_iv (ST_WRITE)
		709	const_iv (ST_APPEND)
		710	const_iv (ST_IMMUTABLE)
		711	const_iv (ST_NOATIME)
		712	const_iv (ST_NODIRATIME)
		713	const_iv (ST_RELATIME)
		714
		715	const_iv (PROT_EXEC)
		716	const_iv (PROT_NONE)
		717	const_iv (PROT_READ)
		718	const_iv (PROT_WRITE)
		719
		720	/*const_iv (MAP_FIXED)*/
		721	const_iv (MAP_PRIVATE)
		722	const_iv (MAP_SHARED)
		723	const_iv (MAP_ANONYMOUS)
		724
		725	/* linuxish */
		726	const_iv (MAP_HUGETLB)
		727	const_iv (MAP_LOCKED)
		728	const_iv (MAP_NORESERVE)
		729	const_iv (MAP_POPULATE)
		730	const_iv (MAP_NONBLOCK)
		731
		732	const_iv (MCL_FUTURE)
		733	const_iv (MCL_CURRENT)
		734
		735	const_eio (MS_ASYNC)
		736	const_eio (MS_INVALIDATE)
		737	const_eio (MS_SYNC)
		738
		739	const_eio (MT_MODIFY)
		740
		741	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		742	const_eio (SYNC_FILE_RANGE_WRITE)
		743	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		744
		745	const_eio (READDIR_DENTS)
		746	const_eio (READDIR_DIRS_FIRST)
		747	const_eio (READDIR_STAT_ORDER)
		748	const_eio (READDIR_FOUND_UNKNOWN)
		749
		750	const_eio (DT_UNKNOWN)
		751	const_eio (DT_FIFO)
		752	const_eio (DT_CHR)
		753	const_eio (DT_DIR)
		754	const_eio (DT_BLK)
		755	const_eio (DT_REG)
		756	const_eio (DT_LNK)
		757	const_eio (DT_SOCK)
		758	const_eio (DT_WHT)
		759	};
		760
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	761	aio_stash = gv_stashpv ("IO::AIO" , 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	762	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	763	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101		764
		765	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		766	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		767
		768	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		769
1102	create_pipe ();	770	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		771
		772	if (eio_init (want_poll, done_poll) < 0)
		773	croak ("IO::AIO: unable to initialise eio library");
		774
		775	/* atfork child called in fifo order, so before eio's handler */
		776	X_THREAD_ATFORK (0, 0, atfork_child);
		777	}
		778
1106	void	779	void
1107	min_parallel (nthreads)	780	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	781	PROTOTYPE: $
		782	CODE:
		783	eio_set_max_poll_reqs (nreqs);
1110		784
1111	void	785	void
1112	max_parallel (nthreads)	786	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	787	PROTOTYPE: $
		788	CODE:
		789	eio_set_max_poll_time (nseconds);
1115		790
1116	void	791	void
		792	min_parallel (int nthreads)
		793	PROTOTYPE: $
		794	CODE:
		795	eio_set_min_parallel (nthreads);
		796
		797	void
		798	max_parallel (int nthreads)
		799	PROTOTYPE: $
		800	CODE:
		801	eio_set_max_parallel (nthreads);
		802
		803	void
		804	max_idle (int nthreads)
		805	PROTOTYPE: $
		806	CODE:
		807	eio_set_max_idle (nthreads);
		808
		809	void
		810	max_outstanding (int maxreqs)
		811	PROTOTYPE: $
		812	CODE:
		813	max_outstanding = maxreqs;
		814
		815	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	816	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: $$$;$	817	PROTOTYPE: $$$;$
1123	PPCODE:	818	PPCODE:
1124	{	819	{
1125	dREQ;	820	dREQ;
1126		821
1127	req->type = REQ_OPEN;	822	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	823	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	824	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	825	req->int1 = flags;
1131	req->mode = mode;	826	req->int2 = mode;
1132		827
1133	REQ_SEND;	828	REQ_SEND;
1134	}	829	}
1135		830
1136	void	831	void
1137	aio_close (fh,callback=&PL_sv_undef)	832	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	833	PROTOTYPE: $;$
1141	ALIAS:	834	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	835	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	836	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	837	PPCODE:
1146	{	838	{
		839	int fd = s_fileno_croak (fh, 0);
1147	dREQ;	840	dREQ;
1148		841
1149	req->type = ix;	842	req->type = ix;
1150	req->fh = newSVsv (fh);	843	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	844	req->int1 = fd;
1152		845
1153	REQ_SEND (req);	846	REQ_SEND (req);
1154	}	847	}
1155		848
1156	void	849	void
		850	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		851	PROTOTYPE: $$$$;$
		852	PPCODE:
		853	{
		854	int fd = s_fileno_croak (fh, 0);
		855	dREQ;
		856
		857	req->type = EIO_SYNC_FILE_RANGE;
		858	req->sv1 = newSVsv (fh);
		859	req->int1 = fd;
		860	req->offs = offset;
		861	req->size = nbytes;
		862	req->int2 = flags;
		863
		864	REQ_SEND (req);
		865	}
		866
		867	void
		868	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		869	PROTOTYPE: $;$
		870	PPCODE:
		871	{
		872	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		873	int fd = s_fileno_croak (fh, 0);
		874	dREQ;
		875
		876	if (close_pipe < 0)
		877	{
		878	int pipefd [2];
		879
		880	if (pipe (pipefd) < 0
		881	|| close (pipefd [1]) < 0
		882	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		883	abort (); /*D*/
		884
		885	close_pipe = pipefd [0];
		886	}
		887
		888	req->type = EIO_DUP2;
		889	req->int1 = close_pipe;
		890	req->sv2 = newSVsv (fh);
		891	req->int2 = fd;
		892
		893	REQ_SEND (req);
		894	}
		895
		896	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	897	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	898	ALIAS:
1165	aio_read = REQ_READ	899	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	900	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	901	PROTOTYPE: $$$$$;$
1168	PPCODE:	902	PPCODE:
1169	{	903	{
1170	aio_req req;
1171	STRLEN svlen;	904	STRLEN svlen;
		905	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	906	char *svptr = SvPVbyte (data, svlen);
1173		907	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		908
1177	if (dataoffset < 0)	909	if (dataoffset < 0)
1178	dataoffset += svlen;	910	dataoffset += svlen;
1179		911
1180	if (dataoffset < 0 || dataoffset > svlen)	912	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	913	croak ("dataoffset outside of data scalar");
1182		914
1183	if (ix == REQ_WRITE)	915	if (ix == EIO_WRITE)
1184	{	916	{
1185	/* write: check length and adjust. */	917	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	918	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	919	len = svlen - dataoffset;
1188	}	920	}
1189	else	921	else
1190	{	922	{
1191	/* read: grow scalar as necessary */	923	/* read: check type and grow scalar as necessary */
		924	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	925	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	926	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		927
1198	{	928	{
1199	dREQ;	929	dREQ;
1200		930
1201	req->type = ix;	931	req->type = ix;
1202	req->fh = newSVsv (fh);	932	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	933	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	934	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	935	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	936	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	937	req->ptr2 = (char *)svptr + dataoffset;
		938	req->stroffset = dataoffset;
1209		939
1210	if (!SvREADONLY (data))	940	if (!SvREADONLY (data))
1211	{	941	{
1212	SvREADONLY_on (data);	942	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	943	req->flags |= FLAG_SV2_RO_OFF;
1214	}	944	}
1215		945
1216	REQ_SEND;	946	REQ_SEND;
1217	}	947	}
1218	}	948	}
1219		949
1220	void	950	void
		951	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		952	PROTOTYPE: $$;$
		953	PPCODE:
		954	{
		955	SV *data;
		956	dREQ;
		957
		958	req->type = EIO_READLINK;
		959	req->sv1 = newSVsv (path);
		960	req->ptr1 = SvPVbyte_nolen (req->sv1);
		961
		962	REQ_SEND;
		963	}
		964
		965	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	966	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: $$$$;$	967	PROTOTYPE: $$$$;$
1228	PPCODE:	968	PPCODE:
1229	{	969	{
		970	int ifd = s_fileno_croak (in_fh , 0);
		971	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	972	dREQ;
1231		973
1232	req->type = REQ_SENDFILE;	974	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	975	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	976	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	977	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	978	req->int2 = ifd;
1237	req->offset = in_offset;	979	req->offs = in_offset;
1238	req->length = length;	980	req->size = length;
1239		981
1240	REQ_SEND;	982	REQ_SEND;
1241	}	983	}
1242		984
1243	void	985	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	986	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	987	PROTOTYPE: $$$;$
1250	PPCODE:	988	PPCODE:
1251	{	989	{
		990	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	991	dREQ;
1253		992
1254	req->type = REQ_READAHEAD;	993	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	994	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	995	req->int1 = fd;
1257	req->offset = offset;	996	req->offs = offset;
1258	req->length = length;	997	req->size = length;
1259		998
1260	REQ_SEND;	999	REQ_SEND;
1261	}	1000	}
1262		1001
1263	void	1002	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1003	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1004	ALIAS:
1268	aio_stat = REQ_STAT	1005	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	1006	aio_lstat = EIO_LSTAT
		1007	aio_statvfs = EIO_STATVFS
1270	PPCODE:	1008	PPCODE:
1271	{	1009	{
1272	dREQ;	1010	dREQ;
1273		1011
1274	New (0, req->statdata, 1, Stat_t);	1012	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		1013
1281	if (SvPOK (fh_or_path))	1014	if (SvPOK (req->sv1))
1282	{	1015	{
1283	req->type = ix;	1016	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	1017	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	1018	}
1287	else	1019	else
1288	{	1020	{
1289	req->type = REQ_FSTAT;	1021	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)));	1022	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1023	}
1293		1024
1294	REQ_SEND;	1025	REQ_SEND;
1295	}	1026	}
1296		1027
1297	void	1028	void
		1029	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1030	PPCODE:
		1031	{
		1032	dREQ;
		1033
		1034	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1035	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1036	req->sv1 = newSVsv (fh_or_path);
		1037
		1038	if (SvPOK (req->sv1))
		1039	{
		1040	req->type = EIO_UTIME;
		1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1042	}
		1043	else
		1044	{
		1045	req->type = EIO_FUTIME;
		1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1047	}
		1048
		1049	REQ_SEND;
		1050	}
		1051
		1052	void
		1053	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1054	PPCODE:
		1055	{
		1056	dREQ;
		1057
		1058	req->sv1 = newSVsv (fh_or_path);
		1059	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1060
		1061	if (SvPOK (req->sv1))
		1062	{
		1063	req->type = EIO_TRUNCATE;
		1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1065	}
		1066	else
		1067	{
		1068	req->type = EIO_FTRUNCATE;
		1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1070	}
		1071
		1072	REQ_SEND;
		1073	}
		1074
		1075	void
		1076	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1077	ALIAS:
		1078	aio_chmod = EIO_CHMOD
		1079	aio_mkdir = EIO_MKDIR
		1080	PPCODE:
		1081	{
		1082	dREQ;
		1083
		1084	req->int2 = mode;
		1085	req->sv1 = newSVsv (fh_or_path);
		1086
		1087	if (SvPOK (req->sv1))
		1088	{
		1089	req->type = ix;
		1090	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1091	}
		1092	else
		1093	{
		1094	req->type = EIO_FCHMOD;
		1095	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1096	}
		1097
		1098	REQ_SEND;
		1099	}
		1100
		1101	void
		1102	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1103	PPCODE:
		1104	{
		1105	dREQ;
		1106
		1107	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1108	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1109	req->sv1 = newSVsv (fh_or_path);
		1110
		1111	if (SvPOK (req->sv1))
		1112	{
		1113	req->type = EIO_CHOWN;
		1114	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1115	}
		1116	else
		1117	{
		1118	req->type = EIO_FCHOWN;
		1119	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1120	}
		1121
		1122	REQ_SEND;
		1123	}
		1124
		1125	void
		1126	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	dREQ;
		1130
		1131	req->type = EIO_READDIR;
		1132	req->sv1 = newSVsv (pathname);
		1133	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1134	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1135
		1136	if (flags & EIO_READDIR_DENTS)
		1137	req->int1 |= EIO_READDIR_CUSTOM2;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1143	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1144	ALIAS:
1302	aio_unlink = REQ_UNLINK	1145	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1146	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1147	aio_readdir = EIO_READDIR
1305	PPCODE:	1148	PPCODE:
1306	{	1149	{
1307	dREQ;	1150	dREQ;
1308		1151
1309	req->type = ix;	1152	req->type = ix;
1310	req->data = newSVsv (pathname);	1153	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1154	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1155
1313	REQ_SEND;	1156	REQ_SEND;
1314	}	1157	}
1315		1158
1316	void	1159	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1160	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1161	ALIAS:
1322	aio_link = REQ_LINK	1162	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1163	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1164	aio_rename = EIO_RENAME
1325	PPCODE:	1165	PPCODE:
1326	{	1166	{
1327	dREQ;	1167	dREQ;
1328		1168
1329	req->type = ix;	1169	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1170	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1171	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1172	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1173	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1174
1335	REQ_SEND;	1175	REQ_SEND;
1336	}	1176	}
1337		1177
1338	void	1178	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1179	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1180	PPCODE:
1343	{	1181	{
1344	dREQ;	1182	dREQ;
1345		1183
1346	req->type = REQ_BUSY;	1184	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1185	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1186	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1187	req->int2 = (mode_t)mode;
		1188	req->offs = dev;
		1189
1350	REQ_SEND;	1190	REQ_SEND;
1351	}	1191	}
1352		1192
1353	void	1193	void
		1194	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1195	ALIAS:
		1196	aio_mtouch = EIO_MTOUCH
		1197	aio_msync = EIO_MSYNC
		1198	PROTOTYPE: $$$$;$
		1199	PPCODE:
		1200	{
		1201	STRLEN svlen;
		1202	UV len = SvUV (length);
		1203	char *svptr = SvPVbyte (data, svlen);
		1204
		1205	if (offset < 0)
		1206	offset += svlen;
		1207
		1208	if (offset < 0 || offset > svlen)
		1209	croak ("offset outside of scalar");
		1210
		1211	if (!SvOK (length) || len + offset > svlen)
		1212	len = svlen - offset;
		1213
		1214	{
		1215	dREQ;
		1216
		1217	req->type = ix;
		1218	req->size = len;
		1219	req->sv2 = SvREFCNT_inc (data);
		1220	req->ptr2 = (char *)svptr + offset;
		1221	req->int1 = flags;
		1222
		1223	REQ_SEND;
		1224	}
		1225	}
		1226
		1227	void
		1228	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1229	PPCODE:
		1230	{
		1231	dREQ;
		1232
		1233	req->type = EIO_BUSY;
		1234	req->nv1 = delay < 0. ? 0. : delay;
		1235
		1236	REQ_SEND;
		1237	}
		1238
		1239	void
1354	aio_group (callback=&PL_sv_undef)	1240	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1241	PROTOTYPE: ;$
1357	PPCODE:	1242	PPCODE:
1358	{	1243	{
1359	dREQ;	1244	dREQ;
1360		1245
1361	req->type = REQ_GROUP;	1246	req->type = EIO_GROUP;
		1247
1362	req_send (req);	1248	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1249	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1250	}
1366		1251
1367	void	1252	void
1368	aio_nop (callback=&PL_sv_undef)	1253	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1254	ALIAS:
		1255	aio_nop = EIO_NOP
		1256	aio_sync = EIO_SYNC
1370	PPCODE:	1257	PPCODE:
1371	{	1258	{
1372	dREQ;	1259	dREQ;
1373		1260
1374	req->type = REQ_NOP;	1261	req->type = ix;
1375		1262
1376	REQ_SEND;	1263	REQ_SEND;
1377	}	1264	}
1378		1265
1379	void	1266	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1267	aioreq_pri (int pri = 0)
1381	CODE:	1268	PROTOTYPE: ;$
		1269	CODE:
		1270	RETVAL = next_pri;
		1271	if (items > 0)
		1272	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1273	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1274	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1275	next_pri = pri;
		1276	}
		1277	OUTPUT:
		1278	RETVAL
1385		1279
1386	void	1280	void
1387	aioreq_nice (int nice = 0)	1281	aioreq_nice (int nice = 0)
1388	CODE:	1282	CODE:
1389	nice = next_pri - nice;	1283	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1284	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1285	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1286	next_pri = nice;
1393		1287
1394	void	1288	void
1395	flush ()	1289	flush ()
1396	PROTOTYPE:	1290	PROTOTYPE:
1397	CODE:	1291	CODE:
1398	while (nreqs)	1292	while (eio_nreqs ())
1399	{	1293	{
1400	poll_wait ();	1294	poll_wait ();
1401	poll_cb (0);	1295	poll_cb ();
1402	}	1296	}
1403		1297
1404	void	1298	int
1405	poll()	1299	poll()
1406	PROTOTYPE:	1300	PROTOTYPE:
1407	CODE:	1301	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1302	poll_wait ();
1411	poll_cb (0);	1303	RETVAL = poll_cb ();
1412	}	1304	OUTPUT:
		1305	RETVAL
1413		1306
1414	int	1307	int
1415	poll_fileno()	1308	poll_fileno()
1416	PROTOTYPE:	1309	PROTOTYPE:
1417	CODE:	1310	CODE:
1418	RETVAL = respipe [0];	1311	RETVAL = s_epipe_fd (&respipe);
1419	OUTPUT:	1312	OUTPUT:
1420	RETVAL	1313	RETVAL
1421		1314
1422	int	1315	int
1423	poll_cb(...)	1316	poll_cb(...)
1424	PROTOTYPE:	1317	PROTOTYPE:
1425	CODE:	1318	CODE:
1426	RETVAL = poll_cb (0);	1319	RETVAL = poll_cb ();
1427	OUTPUT:	1320	OUTPUT:
1428	RETVAL	1321	RETVAL
1429		1322
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void	1323	void
1439	poll_wait()	1324	poll_wait()
1440	PROTOTYPE:	1325	PROTOTYPE:
1441	CODE:	1326	CODE:
1442	if (nreqs)
1443	poll_wait ();	1327	poll_wait ();
1444		1328
1445	int	1329	int
1446	nreqs()	1330	nreqs()
1447	PROTOTYPE:	1331	PROTOTYPE:
1448	CODE:	1332	CODE:
1449	RETVAL = nreqs;	1333	RETVAL = eio_nreqs ();
1450	OUTPUT:	1334	OUTPUT:
1451	RETVAL	1335	RETVAL
1452		1336
		1337	int
		1338	nready()
		1339	PROTOTYPE:
		1340	CODE:
		1341	RETVAL = eio_nready ();
		1342	OUTPUT:
		1343	RETVAL
		1344
		1345	int
		1346	npending()
		1347	PROTOTYPE:
		1348	CODE:
		1349	RETVAL = eio_npending ();
		1350	OUTPUT:
		1351	RETVAL
		1352
		1353	int
		1354	nthreads()
		1355	PROTOTYPE:
		1356	CODE:
		1357	RETVAL = eio_nthreads ();
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	int
		1362	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1363	PROTOTYPE: $$$$
		1364	CODE:
		1365	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1366	RETVAL = posix_fadvise (fh, offset, length, advice);
		1367	#else
		1368	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1369	#endif
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	ssize_t
		1374	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1375	PROTOTYPE: $$$$
		1376	CODE:
		1377	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1378	OUTPUT:
		1379	RETVAL
		1380
		1381	void
		1382	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1383	PROTOTYPE: $$$$$;$
		1384	PPCODE:
		1385	sv_unmagic (scalar, MMAP_MAGIC);
		1386	{
		1387	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1388	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1389	if (addr == (void *)-1)
		1390	XSRETURN_NO;
		1391
		1392	/* we store the length in mg_obj, as namlen is I32 :/ */
		1393	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1394	->mg_obj = (SV *)length;
		1395
		1396	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1397	if (!(prot & PROT_WRITE))
		1398	SvREADONLY_on (scalar);
		1399
		1400	SvPVX (scalar) = (char *)addr;
		1401	SvCUR_set (scalar, length);
		1402	SvLEN_set (scalar, 0);
		1403	SvPOK_only (scalar);
		1404
		1405	XSRETURN_YES;
		1406	}
		1407
		1408	void
		1409	munmap (SV *scalar)
		1410	PROTOTYPE: $
		1411	CODE:
		1412	sv_unmagic (scalar, MMAP_MAGIC);
		1413
		1414	int
		1415	mlockall (int flags)
		1416	PROTOTYPE: $
		1417	CODE:
		1418	#if _POSIX_MEMLOCK
		1419	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1420	extern int mallopt (int, int);
		1421	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1422	#endif
		1423	mlockall (flags);
		1424	#else
		1425	RETVAL = -1;
		1426	errno = ENOSYS;
		1427	#endif
		1428	OUTPUT:
		1429	RETVAL
		1430
		1431	int
		1432	munlockall ()
		1433	PROTOTYPE:
		1434	CODE:
		1435	#if _POSIX_MEMLOCK
		1436	munlockall ();
		1437	#else
		1438	RETVAL = -1;
		1439	errno = ENOSYS;
		1440	#endif
		1441	OUTPUT:
		1442	RETVAL
		1443
		1444	void _on_next_submit (SV *cb)
		1445	CODE:
		1446	SvREFCNT_dec (on_next_submit);
		1447	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1448
1453	PROTOTYPES: DISABLE	1449	PROTOTYPES: DISABLE
1454		1450
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1452
1457	void	1453	void
1458	cancel (aio_req_ornot req)	1454	cancel (aio_req_ornot req)
1459	CODE:	1455	CODE:
1460	req_cancel (req);	1456	eio_cancel (req);
1461		1457
1462	void	1458	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1460	PPCODE:
		1461	{
		1462	if (GIMME_V != G_VOID)
		1463	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1464
		1465	if (items > 1)
		1466	{
		1467	SV *cb_cv =get_cb (callback);
		1468
1465	SvREFCNT_dec (req->callback);	1469	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1470	req->callback = SvREFCNT_inc (cb_cv);
		1471	}
		1472	}
1467		1473
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1474	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1475
1470	void	1476	void
1471	add (aio_req grp, ...)	1477	add (aio_req grp, ...)
1472	PPCODE:	1478	PPCODE:
1473	{	1479	{
1474	int i;	1480	int i;
1475	aio_req req;
1476		1481
1477	if (grp->fd == 2)	1482	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1484
1480	for (i = 1; i < items; ++i )	1485	for (i = 1; i < items; ++i )
1481	{	1486	{
		1487	aio_req req;
		1488
1482	if (GIMME_V != G_VOID)	1489	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1490	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1491
1485	req = SvAIO_REQ (ST (i));	1492	req = SvAIO_REQ (ST (i));
1486		1493
1487	if (req)	1494	if (req)
1488	{	1495	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	}	1496	}
1501	}	1497	}
1502		1498
1503	void	1499	void
1504	cancel_subs (aio_req_ornot req)	1500	cancel_subs (aio_req_ornot req)
…		…
1508	void	1504	void
1509	result (aio_req grp, ...)	1505	result (aio_req grp, ...)
1510	CODE:	1506	CODE:
1511	{	1507	{
1512	int i;	1508	int i;
		1509	AV *av;
		1510
		1511	grp->errorno = errno;
		1512
1513	AV *av = newAV ();	1513	av = newAV ();
		1514	av_extend (av, items - 1);
1514		1515
1515	for (i = 1; i < items; ++i )	1516	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1517	av_push (av, newSVsv (ST (i)));
1517		1518
1518	SvREFCNT_dec (grp->data);	1519	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1520	grp->sv1 = (SV *)av;
1520	}	1521	}
		1522
		1523	void
		1524	errno (aio_req grp, int errorno = errno)
		1525	CODE:
		1526	grp->errorno = errorno;
1521		1527
1522	void	1528	void
1523	limit (aio_req grp, int limit)	1529	limit (aio_req grp, int limit)
1524	CODE:	1530	CODE:
1525	grp->fd2 = limit;	1531	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1532
1528	void	1533	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1535	CODE:
1531	{	1536	{
1532	SvREFCNT_dec (grp->fh2);	1537	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1538	grp->sv2 = newSVsv (callback);
		1539	grp->feed = aio_grp_feed;
1534		1540
1535	if (grp->fd2 <= 0)	1541	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1542	grp->int2 = 2;
1537		1543
1538	aio_grp_feed (grp);	1544	eio_grp_limit (grp, grp->int2);
1539	}	1545	}
1540		1546

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