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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

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

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