ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.159 by root, Thu Jan 7 18:08:21 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	/* perl namespace pollution */
33	# if __linux	22	#undef VERSION
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>
38	# elif __hpux
39	# include <sys/socket.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>
42	# else
43	# error sendfile support requested but not available
44	# endif
45	#endif
46		23
47	/* used for struct dirent, AIX doesn't provide it */	24	#ifdef _WIN32
48	#ifndef NAME_MAX
49	# define NAME_MAX 4096
50	#endif
51		25
52	#if __ia64	26	# define EIO_STRUCT_DIRENT Direntry_t
53	# define STACKSIZE 65536	27	# undef malloc
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	28	# undef free
55	# define STACKSIZE PTHREAD_STACK_MIN	29
		30	// perl overrides all those nice win32 functions
		31	# undef open
		32	# undef read
		33	# undef write
		34	# undef send
		35	# undef recv
		36	# undef stat
		37	# undef fstat
		38	# define lstat stat
		39	# undef truncate
		40	# undef ftruncate
		41	# undef open
		42	# undef close
		43	# undef unlink
		44	# undef rmdir
		45	# undef rename
		46	# undef lseek
		47
		48	# define chown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchown(a,b,c) (errno = ENOSYS, -1)
		50	# define fchmod(a,b) (errno = ENOSYS, -1)
		51	# define symlink(a,b) (errno = ENOSYS, -1)
		52	# define readlink(a,b,c) (errno = ENOSYS, -1)
		53	# define mknod(a,b,c) (errno = ENOSYS, -1)
		54	# define truncate(a,b) (errno = ENOSYS, -1)
		55	# define ftruncate(fd,o) chsize ((fd), (o))
		56	# define fsync(fd) _commit (fd)
		57	# define opendir(fd) (errno = ENOSYS, 0)
		58	# define readdir(fd) (errno = ENOSYS, -1)
		59	# define closedir(fd) (errno = ENOSYS, -1)
		60	# define mkdir(a,b) mkdir (a)
		61
56	#else	62	#else
57	# define STACKSIZE 16384
58	#endif
59		63
60	/* buffer size for various temporary buffers */	64	# include <sys/time.h>
61	#define AIO_BUFSIZE 65536	65	# include <sys/select.h>
		66	# include <unistd.h>
		67	# include <utime.h>
		68	# include <signal.h>
		69	# define EIO_STRUCT_DIRENT struct dirent
62		70
63	#define dBUF \	71	#endif
64	char *aio_buf; \	72
65	LOCK (wrklock); \	73	/* perl stupidly overrides readdir and maybe others */
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	74	/* with thread-unsafe versions, imagine that :( */
67	UNLOCK (wrklock); \	75	#undef readdir
68	if (!aio_buf) \	76	#undef opendir
69	return -1;	77	#undef closedir
		78
		79	#define EIO_STRUCT_STAT Stat_t
		80
		81	/* use NV for 32 bit perls as it allows larger offsets */
		82	#if IVSIZE >= 8
		83	# define VAL64 IV
		84	# define SvVAL64 SvIV
		85	# define newSVval64 newSViv
		86	#else
		87	# define VAL64 NV
		88	# define SvVAL64 SvNV
		89	# define newSVval64 newSVnv
		90	#endif
		91
		92	/*****************************************************************************/
		93
		94	#if __GNUC__ >= 3
		95	# define expect(expr,value) __builtin_expect ((expr),(value))
		96	#else
		97	# define expect(expr,value) (expr)
		98	#endif
		99
		100	#define expect_false(expr) expect ((expr) != 0, 0)
		101	#define expect_true(expr) expect ((expr) != 0, 1)
		102
		103	/*****************************************************************************/
		104
		105	typedef SV SV8; /* byte-sv, used for argument-checking */
		106	typedef int aio_rfd; /* read file desriptor */
		107	typedef int aio_wfd; /* write file descriptor */
		108
		109	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		110
		111	#define EIO_REQ_MEMBERS \
		112	SV *callback; \
		113	SV *sv1, *sv2; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/eio.h"
		120
		121	#ifndef POSIX_FADV_NORMAL
		122	# define POSIX_FADV_NORMAL 0
		123	# define NO_FADVISE 1
		124	#endif
		125
		126	#ifndef POSIX_FADV_SEQUENTIAL
		127	# define POSIX_FADV_SEQUENTIAL 0
		128	#endif
		129
		130	#ifndef POSIX_FADV_RANDOM
		131	# define POSIX_FADV_RANDOM 0
		132	#endif
		133
		134	#ifndef POSIX_FADV_NOREUSE
		135	# define POSIX_FADV_NOREUSE 0
		136	#endif
		137
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141
		142	#ifndef POSIX_FADV_DONTNEED
		143	# define POSIX_FADV_DONTNEED 0
		144	#endif
		145
		146	#ifndef ST_NODEV
		147	# define ST_NODEV 0
		148	#endif
		149
		150	#ifndef ST_NOEXEC
		151	# define ST_NOEXEC 0
		152	#endif
		153
		154	#ifndef ST_SYNCHRONOUS
		155	# define ST_SYNCHRONOUS 0
		156	#endif
		157
		158	#ifndef ST_MANDLOCK
		159	# define ST_MANDLOCK 0
		160	#endif
		161
		162	#ifndef ST_WRITE
		163	# define ST_WRITE 0
		164	#endif
		165
		166	#ifndef ST_APPEND
		167	# define ST_APPEND 0
		168	#endif
		169
		170	#ifndef ST_IMMUTABLE
		171	# define ST_IMMUTABLE 0
		172	#endif
		173
		174	#ifndef ST_NOATIME
		175	# define ST_NOATIME 0
		176	#endif
		177
		178	#ifndef ST_NODIRATIME
		179	# define ST_NODIRATIME 0
		180	#endif
		181
		182	#ifndef ST_RELATIME
		183	# define ST_RELATIME 0
		184	#endif
		185
		186	static int req_invoke (eio_req *req);
		187	#define EIO_FINISH(req) req_invoke (req)
		188	static void req_destroy (eio_req *grp);
		189	#define EIO_DESTROY(req) req_destroy (req)
70		190
71	enum {	191	enum {
72	REQ_QUIT,	192	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	193	};
84		194
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	195	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		196
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;
93	SV *fh, *fh2;
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;
101	int type;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;	197	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	198	typedef eio_req *aio_req_ornot;
119		199
120	enum {	200	static SV *on_next_submit;
121	PRI_MIN = -4,	201	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,	202	static int max_outstanding;
123		203
124	DEFAULT_PRI = 0,	204	static s_epipe respipe;
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128		205
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int respipe [2];
134
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140
141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143
144	/* worker threasd management */
145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
146
147	typedef struct worker {
148	/* locked by wrklock */
149	struct worker *prev, *next;
150
151	pthread_t tid;
152
153	/* locked by reslock, reqlock or wrklock */
154	aio_req req; /* currently processed request */
155	void *dbuf;
156	DIR *dirp;
157	} worker;
158
159	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
160
161	static void worker_clear (worker *wrk)
162	{
163	if (wrk->dirp)
164	{
165	closedir (wrk->dirp);
166	wrk->dirp = 0;
167	}
168
169	if (wrk->dbuf)
170	{
171	free (wrk->dbuf);
172	wrk->dbuf = 0;
173	}
174	}
175
176	static void worker_free (worker *wrk)
177	{
178	wrk->next->prev = wrk->prev;
179	wrk->prev->next = wrk->next;
180
181	free (wrk);
182	}
183
184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
187
188	/*
189	* a somewhat faster data structure might be nice, but
190	* with 8 priorities this actually needs <20 insns
191	* per shift, the most expensive operation.
192	*/
193	typedef struct {
194	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
195	int size;
196	} reqq;
197
198	static reqq req_queue;
199	static reqq res_queue;
200
201	int reqq_push (reqq *q, aio_req req)
202	{
203	int pri = req->pri;
204	req->next = 0;
205
206	if (q->qe[pri])
207	{
208	q->qe[pri]->next = req;
209	q->qe[pri] = req;
210	}
211	else
212	q->qe[pri] = q->qs[pri] = req;
213
214	return q->size++;
215	}
216
217	aio_req reqq_shift (reqq *q)
218	{
219	int pri;
220
221	if (!q->size)
222	return 0;
223
224	--q->size;
225
226	for (pri = NUM_PRI; pri--; )
227	{
228	aio_req req = q->qs[pri];
229
230	if (req)
231	{
232	if (!(q->qs[pri] = req->next))
233	q->qe[pri] = 0;
234
235	return req;
236	}
237	}
238
239	abort ();
240	}
241
242	static int poll_cb ();
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	206	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	207	static void req_cancel (aio_req req);
246		208
		209	static void want_poll (void)
		210	{
		211	/* write a dummy byte to the pipe so fh becomes ready */
		212	s_epipe_signal (&respipe);
		213	}
		214
		215	static void done_poll (void)
		216	{
		217	/* read any signals sent by the worker threads */
		218	s_epipe_drain (&respipe);
		219	}
		220
247	/* must be called at most once */	221	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	222	static SV *req_sv (aio_req req, HV *stash)
249	{	223	{
250	if (!req->self)	224	if (!req->self)
251	{	225	{
252	req->self = (SV *)newHV ();	226	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	227	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	228	}
255		229
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	230	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	231	}
258		232
259	static aio_req SvAIO_REQ (SV *sv)	233	static aio_req SvAIO_REQ (SV *sv)
260	{	234	{
261	MAGIC *mg;	235	MAGIC *mg;
262		236
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	237	if (!SvROK (sv)
		238	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		239	&& SvSTASH (SvRV (sv)) != aio_req_stash
		240	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	241	croak ("object of class IO::AIO::REQ expected");
265		242
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	243	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		244
268	return mg ? (aio_req)mg->mg_ptr : 0;	245	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	246	}
270		247
271	static void aio_grp_feed (aio_req grp)	248	static void aio_grp_feed (aio_req grp)
272	{	249	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	250	if (grp->sv2 && SvOK (grp->sv2))
274	{	251	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	252	dSP;
280		253
281	ENTER;	254	ENTER;
282	SAVETMPS;	255	SAVETMPS;
283	PUSHMARK (SP);	256	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	257	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	258	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	259	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	260	SPAGAIN;
288	FREETMPS;	261	FREETMPS;
289	LEAVE;	262	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	263	}
300	}	264	}
301		265
302	static void aio_grp_dec (aio_req grp)	266	static void req_submit (eio_req *req)
303	{	267	{
304	--grp->length;	268	eio_submit (req);
305		269
306	/* call feeder, if applicable */	270	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	271	{
312	req_invoke (grp);	272	dSP;
313	req_free (grp);	273	SV *cb = sv_2mortal (on_next_submit);
		274
		275	on_next_submit = 0;
		276
		277	PUSHMARK (SP);
		278	PUTBACK;
		279	call_sv (cb, G_DISCARD | G_EVAL);
314	}	280	}
315	}	281	}
316		282
317	static void poll_wait ()	283	static int req_invoke (eio_req *req)
318	{	284	{
319	fd_set rfd;	285	dSP;
320		286
321	while (nreqs)	287	if (req->flags & FLAG_SV2_RO_OFF)
		288	SvREADONLY_off (req->sv2);
		289
		290	if (!EIO_CANCELLED (req) && req->callback)
322	{	291	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;
345
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347	{
348	errno = req->errorno;
349
350	ENTER;	292	ENTER;
351	SAVETMPS;	293	SAVETMPS;
352	PUSHMARK (SP);	294	PUSHMARK (SP);
353	EXTEND (SP, 1);	295	EXTEND (SP, 1);
354		296
355	switch (req->type)	297	switch (req->type)
356	{	298	{
357	case REQ_READDIR:	299	case EIO_READDIR:
358	{	300	{
359	SV *rv = &PL_sv_undef;	301	SV *rv = &PL_sv_undef;
360		302
361	if (req->result >= 0)	303	if (req->result >= 0)
362	{	304	{
363	int i;	305	int i;
364	char *buf = req->data2ptr;	306	char *names = (char *)req->ptr2;
		307	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	308	AV *av = newAV ();
366		309
367	av_extend (av, req->result - 1);	310	av_extend (av, req->result - 1);
368		311
369	for (i = 0; i < req->result; ++i)	312	for (i = 0; i < req->result; ++i)
370	{	313	{
371	SV *sv = newSVpv (buf, 0);	314	if (req->int1 & EIO_READDIR_DENTS)
		315	{
		316	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		317
		318	if (req->int1 & EIO_READDIR_CUSTOM2)
		319	{
		320	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		321	AV *avent = newAV ();
		322
		323	av_extend (avent, 2);
		324
		325	if (!sv_type [ent->type])
		326	{
		327	sv_type [ent->type] = newSViv (ent->type);
		328	SvREADONLY_on (sv_type [ent->type]);
		329	}
		330
		331	av_store (avent, 0, namesv);
		332	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		333	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		334
		335	av_store (av, i, newRV_noinc ((SV *)avent));
		336	}
		337	else
373	av_store (av, i, sv);	338	av_store (av, i, namesv);
		339
		340	++ent;
		341	}
		342	else
		343	{
		344	SV *name = newSVpv (names, 0);
		345	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	346	names += SvCUR (name) + 1;
		347	}
375	}	348	}
376		349
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	350	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	351	}
379		352
380	PUSHs (rv);	353	PUSHs (rv);
		354
		355	if (req->int1 & EIO_READDIR_CUSTOM1)
		356	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	357	}
382	break;	358	break;
383		359
384	case REQ_OPEN:	360	case EIO_OPEN:
385	{	361	{
386	/* convert fd to fh */	362	/* convert fd to fh */
387	SV *fh;	363	SV *fh = &PL_sv_undef;
388		364
389	PUSHs (sv_2mortal (newSViv (req->result)));	365	if (req->result >= 0)
390	PUTBACK;	366	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	367	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	368	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		369	char sym [64];
		370	int symlen;
		371
		372	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		373	gv_init (gv, aio_stash, sym, symlen, 0);
393		374
394	fh = SvREFCNT_inc (POPs);	375	symlen = snprintf (
		376	sym,
		377	sizeof (sym),
		378	"%s&=%d",
		379	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		380	(int)req->result
		381	);
395		382
		383	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		384	fh = (SV *)gv;
		385	}
		386
396	PUSHMARK (SP);	387	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	388	}
399	break;	389	break;
400		390
		391	case EIO_STATVFS:
		392	case EIO_FSTATVFS:
		393	{
		394	SV *rv = &PL_sv_undef;
		395
		396	if (req->result >= 0)
		397	{
		398	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		399	HV *hv = newHV ();
		400
		401	rv = sv_2mortal (newRV_noinc (hv));
		402
		403	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		404	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		405	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		406	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		407	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		408	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		409	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		410	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		411	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		412	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		413	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		414	}
		415
		416	PUSHs (rv);
		417	}
		418
		419	break;
		420
401	case REQ_GROUP:	421	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	422	req->int1 = 2; /* mark group as finished */
403		423
404	if (req->data)	424	if (req->sv1)
405	{	425	{
406	int i;	426	int i;
407	AV *av = (AV *)req->data;	427	AV *av = (AV *)req->sv1;
408		428
409	EXTEND (SP, AvFILL (av) + 1);	429	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	430	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	431	PUSHs (*av_fetch (av, i, 0));
412	}	432	}
413	break;	433	break;
414		434
415	case REQ_NOP:	435	case EIO_NOP:
416	case REQ_BUSY:	436	case EIO_BUSY:
417	break;	437	break;
		438
		439	case EIO_READLINK:
		440	if (req->result > 0)
		441	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		442	break;
		443
		444	case EIO_STAT:
		445	case EIO_LSTAT:
		446	case EIO_FSTAT:
		447	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		448	PL_laststatval = req->result;
		449	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		450	PUSHs (sv_2mortal (newSViv (req->result)));
		451	break;
		452
		453	case EIO_READ:
		454	{
		455	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		456	*SvEND (req->sv2) = 0;
		457	SvPOK_only (req->sv2);
		458	SvSETMAGIC (req->sv2);
		459	PUSHs (sv_2mortal (newSViv (req->result)));
		460	}
		461	break;
		462
		463	case EIO_DUP2:
		464	if (req->result > 0)
		465	req->result = 0;
		466	/* FALLTHROUGH */
418		467
419	default:	468	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	469	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	470	break;
422	}	471	}
423		472
		473	errno = req->errorno;
424		474
425	PUTBACK;	475	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	476	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	477	SPAGAIN;
428		478
429	FREETMPS;	479	FREETMPS;
430	LEAVE;	480	LEAVE;
		481
		482	PUTBACK;
431	}	483	}
432		484
433	if (req->grp)	485	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	486	}
453		487
454	static void req_free (aio_req req)	488	static void req_destroy (aio_req req)
455	{	489	{
456	if (req->self)	490	if (req->self)
457	{	491	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	492	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	493	SvREFCNT_dec (req->self);
460	}	494	}
461		495
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	496	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	497	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	498	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		499
471	Safefree (req);	500	Safefree (req);
472	}	501	}
473		502
474	static void req_cancel_subs (aio_req grp)	503	static void req_cancel_subs (aio_req grp)
475	{	504	{
476	aio_req sub;	505	aio_req sub;
477		506
478	if (grp->type != REQ_GROUP)	507	if (grp->type != EIO_GROUP)
479	return;	508	return;
480		509
481	SvREFCNT_dec (grp->fh2);	510	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	511	grp->sv2 = 0;
483		512
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	513	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	514	}
487		515
488	static void req_cancel (aio_req req)	516	static void
		517	create_respipe (void)
489	{	518	{
490	req->flags |= FLAG_CANCELLED;	519	if (s_epipe_renew (&respipe))
491		520	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	521	}
494		522
		523	static void poll_wait (void)
		524	{
		525	while (eio_nreqs ())
		526	{
		527	int size;
		528
		529	X_LOCK (reslock);
		530	size = res_queue.size;
		531	X_UNLOCK (reslock);
		532
		533	if (size)
		534	return;
		535
		536	etp_maybe_start_thread ();
		537
		538	s_epipe_wait (&respipe);
		539	}
		540	}
		541
495	static int poll_cb ()	542	static int poll_cb (void)
496	{	543	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	544	for (;;)
503	{	545	{
504	LOCK (reslock);	546	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		547
507	if (req)	548	if (res > 0)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;	549	croak (0);
522		550
523	--nreqs;	551	if (!max_outstanding || max_outstanding > eio_nreqs ())
		552	return res;
524		553
525	if (req->type == REQ_QUIT)	554	poll_wait ();
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	555	}
554
555	return count;
556	}
557
558	static void *aio_proc(void *arg);
559
560	static void start_thread (void)
561	{
562	sigset_t fullsigset, oldsigset;
563	pthread_attr_t attr;
564
565	worker *wrk = calloc (1, sizeof (worker));
566
567	if (!wrk)
568	croak ("unable to allocate worker thread data");
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{
581	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;
585	started++;
586	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}
593
594	static void req_send (aio_req req)
595	{
596	while (started < wanted && nreqs >= started)
597	start_thread ();
598
599	++nreqs;
600
601	LOCK (reqlock);
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605	}
606
607	static void end_thread (void)
608	{
609	aio_req req;
610
611	Newz (0, req, 1, aio_cb);
612
613	req->type = REQ_QUIT;
614	req->pri = PRI_MAX + PRI_BIAS;
615
616	req_send (req);
617	}
618
619	static void min_parallel (int nthreads)
620	{
621	if (wanted < nthreads)
622	wanted = nthreads;
623	}
624
625	static void max_parallel (int nthreads)
626	{
627	int cur = started;
628
629	if (wanted > nthreads)
630	wanted = nthreads;
631
632	while (cur > wanted)
633	{
634	end_thread ();
635	cur--;
636	}
637
638	while (started > wanted)
639	{
640	poll_wait ();
641	poll_cb ();
642	}
643	}
644
645	static void create_pipe ()
646	{
647	if (pipe (respipe))
648	croak ("unable to initialize result pipe");
649
650	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
651	croak ("cannot set result pipe to nonblocking mode");
652
653	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
654	croak ("cannot set result pipe to nonblocking mode");
655	}
656
657	/*****************************************************************************/
658	/* work around various missing functions */
659
660	#if !HAVE_PREADWRITE
661	# define pread aio_pread
662	# define pwrite aio_pwrite
663
664	/*
665	* make our pread/pwrite safe against themselves, but not against
666	* normal read/write by using a mutex. slows down execution a lot,
667	* but that's your problem, not mine.
668	*/
669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
670
671	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
672	{
673	ssize_t res;
674	off_t ooffset;
675
676	LOCK (preadwritelock);
677	ooffset = lseek (fd, 0, SEEK_CUR);
678	lseek (fd, offset, SEEK_SET);
679	res = read (fd, buf, count);
680	lseek (fd, ooffset, SEEK_SET);
681	UNLOCK (preadwritelock);
682
683	return res;
684	}
685
686	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
687	{
688	ssize_t res;
689	off_t ooffset;
690
691	LOCK (preadwritelock);
692	ooffset = lseek (fd, 0, SEEK_CUR);
693	lseek (fd, offset, SEEK_SET);
694	res = write (fd, buf, count);
695	lseek (fd, offset, SEEK_SET);
696	UNLOCK (preadwritelock);
697
698	return res;
699	}
700	#endif
701
702	#if !HAVE_FDATASYNC
703	# define fdatasync fsync
704	#endif
705
706	#if !HAVE_READAHEAD
707	# define readahead aio_readahead
708
709	static ssize_t readahead (int fd, off_t offset, size_t count)
710	{
711	dBUF;
712
713	while (count > 0)
714	{
715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
716
717	pread (fd, aio_buf, len, offset);
718	offset += len;
719	count -= len;
720	}
721
722	errno = 0;
723	}
724	#endif
725
726	#if !HAVE_READDIR_R
727	# define readdir_r aio_readdir_r
728
729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
730
731	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
732	{
733	struct dirent *e;
734	int errorno;
735
736	LOCK (readdirlock);
737
738	e = readdir (dirp);
739	errorno = errno;
740
741	if (e)
742	{
743	*res = ent;
744	strcpy (ent->d_name, e->d_name);
745	}
746	else
747	*res = 0;
748
749	UNLOCK (readdirlock);
750
751	errno = errorno;
752	return e ? 0 : -1;
753	}
754	#endif
755
756	/* sendfile always needs emulation */
757	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
758	{
759	ssize_t res;
760
761	if (!count)
762	return 0;
763
764	#if HAVE_SENDFILE
765	# if __linux
766	res = sendfile (ofd, ifd, &offset, count);
767
768	# elif __freebsd
769	/*
770	* Of course, the freebsd sendfile is a dire hack with no thoughts
771	* wasted on making it similar to other I/O functions.
772	*/
773	{
774	off_t sbytes;
775	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
776
777	if (res < 0 && sbytes)
778	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
779	res = sbytes;
780	}
781
782	# elif __hpux
783	res = sendfile (ofd, ifd, offset, count, 0, 0);
784
785	# elif __solaris
786	{
787	struct sendfilevec vec;
788	size_t sbytes;
789
790	vec.sfv_fd = ifd;
791	vec.sfv_flag = 0;
792	vec.sfv_off = offset;
793	vec.sfv_len = count;
794
795	res = sendfilev (ofd, &vec, 1, &sbytes);
796
797	if (res < 0 && sbytes)
798	res = sbytes;
799	}
800
801	# endif
802	#else
803	res = -1;
804	errno = ENOSYS;
805	#endif
806
807	if (res < 0
808	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
809	#if __solaris
810	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
811	#endif
812	)
813	)
814	{
815	/* emulate sendfile. this is a major pain in the ass */
816	dBUF;
817
818	res = 0;
819
820	while (count)
821	{
822	ssize_t cnt;
823
824	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
825
826	if (cnt <= 0)
827	{
828	if (cnt && !res) res = -1;
829	break;
830	}
831
832	cnt = write (ofd, aio_buf, cnt);
833
834	if (cnt <= 0)
835	{
836	if (cnt && !res) res = -1;
837	break;
838	}
839
840	offset += cnt;
841	res += cnt;
842	count -= cnt;
843	}
844	}
845
846	return res;
847	}
848
849	/* read a full directory */
850	static void scandir_ (aio_req req, worker *self)
851	{
852	DIR *dirp;
853	union
854	{
855	struct dirent d;
856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
857	} *u;
858	struct dirent *entp;
859	char *name, *names;
860	int memlen = 4096;
861	int memofs = 0;
862	int res = 0;
863	int errorno;
864
865	LOCK (wrklock);
866	self->dirp = dirp = opendir (req->dataptr);
867	self->dbuf = u = malloc (sizeof (*u));
868	UNLOCK (wrklock);
869
870	req->data2ptr = names = malloc (memlen);
871
872	if (dirp && u && names)
873	for (;;)
874	{
875	errno = 0;
876	readdir_r (dirp, &u->d, &entp);
877
878	if (!entp)
879	break;
880
881	name = entp->d_name;
882
883	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
884	{
885	int len = strlen (name) + 1;
886
887	res++;
888
889	while (memofs + len > memlen)
890	{
891	memlen *= 2;
892	LOCK (wrklock);
893	req->data2ptr = names = realloc (names, memlen);
894	UNLOCK (wrklock);
895
896	if (!names)
897	break;
898	}
899
900	memcpy (names + memofs, name, len);
901	memofs += len;
902	}
903	}
904
905	if (errno)
906	res = -1;
907
908	req->result = res;
909	}
910
911	/*****************************************************************************/
912
913	static void *aio_proc (void *thr_arg)
914	{
915	aio_req req;
916	int type;
917	worker *self = (worker *)thr_arg;
918
919	do
920	{
921	LOCK (reqlock);
922
923	for (;;)
924	{
925	self->req = req = reqq_shift (&req_queue);
926
927	if (req)
928	break;
929
930	pthread_cond_wait (&reqwait, &reqlock);
931	}
932
933	UNLOCK (reqlock);
934
935	errno = 0; /* strictly unnecessary */
936	type = req->type; /* remember type for QUIT check */
937
938	if (!(req->flags & FLAG_CANCELLED))
939	switch (type)
940	{
941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
943
944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
946
947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
950
951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
952	case REQ_CLOSE: req->result = close (req->fd); break;
953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
958
959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
960	case REQ_FSYNC: req->result = fsync (req->fd); break;
961	case REQ_READDIR: scandir_ (req, self); break;
962
963	case REQ_BUSY:
964	{
965	struct timeval tv;
966
967	tv.tv_sec = req->fd;
968	tv.tv_usec = req->fd2;
969
970	req->result = select (0, 0, 0, 0, &tv);
971	}
972
973	case REQ_GROUP:
974	case REQ_NOP:
975	case REQ_QUIT:
976	break;
977
978	default:
979	req->result = ENOSYS;
980	break;
981	}
982
983	req->errorno = errno;
984
985	LOCK (reslock);
986
987	if (!reqq_push (&res_queue, req))
988	/* write a dummy byte to the pipe so fh becomes ready */
989	write (respipe [1], &respipe, 1);
990
991	self->req = 0;
992	worker_clear (self);
993
994	UNLOCK (reslock);
995	}
996	while (type != REQ_QUIT);
997
998	LOCK (wrklock);
999	worker_free (self);
1000	UNLOCK (wrklock);
1001
1002	return 0;
1003	}
1004
1005	/*****************************************************************************/
1006
1007	static void atfork_prepare (void)
1008	{
1009	LOCK (wrklock);
1010	LOCK (reqlock);
1011	LOCK (reslock);
1012	#if !HAVE_PREADWRITE
1013	LOCK (preadwritelock);
1014	#endif
1015	#if !HAVE_READDIR_R
1016	LOCK (readdirlock);
1017	#endif
1018	}
1019
1020	static void atfork_parent (void)
1021	{
1022	#if !HAVE_READDIR_R
1023	UNLOCK (readdirlock);
1024	#endif
1025	#if !HAVE_PREADWRITE
1026	UNLOCK (preadwritelock);
1027	#endif
1028	UNLOCK (reslock);
1029	UNLOCK (reqlock);
1030	UNLOCK (wrklock);
1031	}	556	}
1032		557
1033	static void atfork_child (void)	558	static void atfork_child (void)
1034	{	559	{
1035	aio_req prv;
1036
1037	while (prv = reqq_shift (&req_queue))
1038	req_free (prv);
1039
1040	while (prv = reqq_shift (&res_queue))
1041	req_free (prv);
1042
1043	while (wrk_first.next != &wrk_first)
1044	{
1045	worker *wrk = wrk_first.next;
1046
1047	if (wrk->req)
1048	req_free (wrk->req);
1049
1050	worker_clear (wrk);
1051	worker_free (wrk);
1052	}
1053
1054	started = 0;
1055	nreqs = 0;
1056
1057	close (respipe [0]);
1058	close (respipe [1]);
1059	create_pipe ();	560	create_respipe ();
		561	}
1060		562
1061	atfork_parent ();	563	static SV *
		564	get_cb (SV *cb_sv)
		565	{
		566	SvGETMAGIC (cb_sv);
		567	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1062	}	568	}
1063		569
1064	#define dREQ \	570	#define dREQ \
		571	SV *cb_cv; \
1065	aio_req req; \	572	aio_req req; \
1066	int req_pri = next_pri; \	573	int req_pri = next_pri; \
1067	next_pri = DEFAULT_PRI + PRI_BIAS; \	574	next_pri = EIO_PRI_DEFAULT; \
1068	\	575	\
1069	if (SvOK (callback) && !SvROK (callback)) \	576	cb_cv = get_cb (callback); \
1070	croak ("callback must be undef or of reference type"); \
1071	\	577	\
1072	Newz (0, req, 1, aio_cb); \	578	Newz (0, req, 1, eio_req); \
1073	if (!req) \	579	if (!req) \
1074	croak ("out of memory during aio_req allocation"); \	580	croak ("out of memory during eio_req allocation"); \
1075	\	581	\
1076	req->callback = newSVsv (callback); \	582	req->callback = SvREFCNT_inc (cb_cv); \
1077	req->pri = req_pri	583	req->pri = req_pri
1078		584
1079	#define REQ_SEND \	585	#define REQ_SEND \
		586	PUTBACK; \
1080	req_send (req); \	587	req_submit (req); \
		588	SPAGAIN; \
1081	\	589	\
1082	if (GIMME_V != G_VOID) \	590	if (GIMME_V != G_VOID) \
1083	XPUSHs (req_sv (req, AIO_REQ_KLASS));	591	XPUSHs (req_sv (req, aio_req_stash));
1084		592
1085	MODULE = IO::AIO PACKAGE = IO::AIO	593	MODULE = IO::AIO PACKAGE = IO::AIO
1086		594
1087	PROTOTYPES: ENABLE	595	PROTOTYPES: ENABLE
1088		596
1089	BOOT:	597	BOOT:
1090	{	598	{
		599	static const struct {
		600	const char *name;
		601	IV iv;
		602	} *civ, const_iv[] = {
		603	# define const_iv(name, value) { # name, (IV) value },
		604	# define const_eio(name) { # name, (IV) EIO_ ## name },
		605	const_iv (EXDEV , EXDEV)
		606	const_iv (ENOSYS , ENOSYS)
		607	const_iv (O_RDONLY, O_RDONLY)
		608	const_iv (O_WRONLY, O_WRONLY)
		609	const_iv (O_CREAT , O_CREAT)
		610	const_iv (O_TRUNC , O_TRUNC)
		611	#ifndef _WIN32
		612	const_iv (S_IFIFO , S_IFIFO)
		613	#endif
		614	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		615	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		616	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		617	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		618	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		619	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		620
		621	const_iv (ST_RDONLY , ST_RDONLY)
		622	const_iv (ST_NOSUID , ST_NOSUID)
		623	const_iv (ST_NODEV , ST_NODEV)
		624	const_iv (ST_NOEXEC , ST_NOEXEC)
		625	const_iv (ST_SYNCHRONOUS , ST_SYNCHRONOUS)
		626	const_iv (ST_MANDLOCK , ST_MANDLOCK)
		627	const_iv (ST_WRITE , ST_WRITE)
		628	const_iv (ST_APPEND , ST_APPEND)
		629	const_iv (ST_IMMUTABLE , ST_IMMUTABLE)
		630	const_iv (ST_NOATIME , ST_NOATIME)
		631	const_iv (ST_NODIRATIME , ST_NODIRATIME)
		632	const_iv (ST_RELATIME , ST_RELATIME)
		633
		634	const_eio (MS_ASYNC)
		635	const_eio (MS_INVALIDATE)
		636	const_eio (MS_SYNC)
		637
		638	const_eio (MT_MODIFY)
		639
		640	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		641	const_eio (SYNC_FILE_RANGE_WRITE)
		642	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		643
		644	const_eio (READDIR_DENTS)
		645	const_eio (READDIR_DIRS_FIRST)
		646	const_eio (READDIR_STAT_ORDER)
		647	const_eio (READDIR_FOUND_UNKNOWN)
		648
		649	const_eio (DT_UNKNOWN)
		650	const_eio (DT_FIFO)
		651	const_eio (DT_CHR)
		652	const_eio (DT_DIR)
		653	const_eio (DT_BLK)
		654	const_eio (DT_REG)
		655	const_eio (DT_LNK)
		656	const_eio (DT_SOCK)
		657	const_eio (DT_WHT)
		658	};
		659
1091	HV *stash = gv_stashpv ("IO::AIO", 1);	660	aio_stash = gv_stashpv ("IO::AIO" , 1);
1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	661	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	662	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1095		663
		664	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		665	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		666
1096	create_pipe ();	667	create_respipe ();
1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1098	}
1099		668
		669	if (eio_init (want_poll, done_poll) < 0)
		670	croak ("IO::AIO: unable to initialise eio library");
		671
		672	/* atfork child called in fifo order, so before eio's handler */
		673	X_THREAD_ATFORK (0, 0, atfork_child);
		674	}
		675
1100	void	676	void
1101	min_parallel (nthreads)	677	max_poll_reqs (int nreqs)
1102	int nthreads
1103	PROTOTYPE: $	678	PROTOTYPE: $
		679	CODE:
		680	eio_set_max_poll_reqs (nreqs);
1104		681
1105	void	682	void
1106	max_parallel (nthreads)	683	max_poll_time (double nseconds)
1107	int nthreads
1108	PROTOTYPE: $	684	PROTOTYPE: $
		685	CODE:
		686	eio_set_max_poll_time (nseconds);
1109		687
1110	void	688	void
		689	min_parallel (int nthreads)
		690	PROTOTYPE: $
		691	CODE:
		692	eio_set_min_parallel (nthreads);
		693
		694	void
		695	max_parallel (int nthreads)
		696	PROTOTYPE: $
		697	CODE:
		698	eio_set_max_parallel (nthreads);
		699
		700	void
		701	max_idle (int nthreads)
		702	PROTOTYPE: $
		703	CODE:
		704	eio_set_max_idle (nthreads);
		705
		706	void
		707	max_outstanding (int maxreqs)
		708	PROTOTYPE: $
		709	CODE:
		710	max_outstanding = maxreqs;
		711
		712	void
1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	713	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1112	SV * pathname
1113	int flags
1114	int mode
1115	SV * callback
1116	PROTOTYPE: $$$;$	714	PROTOTYPE: $$$;$
1117	PPCODE:	715	PPCODE:
1118	{	716	{
1119	dREQ;	717	dREQ;
1120		718
1121	req->type = REQ_OPEN;	719	req->type = EIO_OPEN;
1122	req->data = newSVsv (pathname);	720	req->sv1 = newSVsv (pathname);
1123	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1124	req->fd = flags;	722	req->int1 = flags;
1125	req->mode = mode;	723	req->int2 = mode;
1126		724
1127	REQ_SEND;	725	REQ_SEND;
1128	}	726	}
1129		727
1130	void	728	void
1131	aio_close (fh,callback=&PL_sv_undef)	729	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1132	SV * fh
1133	SV * callback
1134	PROTOTYPE: $;$	730	PROTOTYPE: $;$
1135	ALIAS:	731	ALIAS:
1136	aio_close = REQ_CLOSE
1137	aio_fsync = REQ_FSYNC	732	aio_fsync = EIO_FSYNC
1138	aio_fdatasync = REQ_FDATASYNC	733	aio_fdatasync = EIO_FDATASYNC
1139	PPCODE:	734	PPCODE:
1140	{	735	{
		736	int fd = s_fileno_croak (fh, 0);
1141	dREQ;	737	dREQ;
1142		738
1143	req->type = ix;	739	req->type = ix;
1144	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	741	req->int1 = fd;
1146		742
1147	REQ_SEND (req);	743	REQ_SEND (req);
1148	}	744	}
1149		745
1150	void	746	void
		747	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		748	PROTOTYPE: $$$$;$
		749	PPCODE:
		750	{
		751	int fd = s_fileno_croak (fh, 0);
		752	dREQ;
		753
		754	req->type = EIO_SYNC_FILE_RANGE;
		755	req->sv1 = newSVsv (fh);
		756	req->int1 = fd;
		757	req->offs = offset;
		758	req->size = nbytes;
		759	req->int2 = flags;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
		765	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		766	PROTOTYPE: $;$
		767	PPCODE:
		768	{
		769	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		770	int fd = s_fileno_croak (fh, 0);
		771	dREQ;
		772
		773	if (close_pipe < 0)
		774	{
		775	int pipefd [2];
		776
		777	if (pipe (pipefd) < 0
		778	|| close (pipefd [1]) < 0
		779	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		780	abort (); /*D*/
		781
		782	close_pipe = pipefd [0];
		783	}
		784
		785	req->type = EIO_DUP2;
		786	req->int1 = close_pipe;
		787	req->sv2 = newSVsv (fh);
		788	req->int2 = fd;
		789
		790	REQ_SEND (req);
		791	}
		792
		793	void
1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	794	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1152	SV * fh
1153	UV offset
1154	UV length
1155	SV * data
1156	UV dataoffset
1157	SV * callback
1158	ALIAS:	795	ALIAS:
1159	aio_read = REQ_READ	796	aio_read = EIO_READ
1160	aio_write = REQ_WRITE	797	aio_write = EIO_WRITE
1161	PROTOTYPE: $$$$$;$	798	PROTOTYPE: $$$$$;$
1162	PPCODE:	799	PPCODE:
1163	{	800	{
1164	aio_req req;
1165	STRLEN svlen;	801	STRLEN svlen;
		802	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1166	char *svptr = SvPVbyte (data, svlen);	803	char *svptr = SvPVbyte (data, svlen);
1167		804	UV len = SvUV (length);
1168	SvUPGRADE (data, SVt_PV);
1169	SvPOK_on (data);
1170		805
1171	if (dataoffset < 0)	806	if (dataoffset < 0)
1172	dataoffset += svlen;	807	dataoffset += svlen;
1173		808
1174	if (dataoffset < 0 || dataoffset > svlen)	809	if (dataoffset < 0 || dataoffset > svlen)
1175	croak ("data offset outside of string");	810	croak ("dataoffset outside of data scalar");
1176		811
1177	if (ix == REQ_WRITE)	812	if (ix == EIO_WRITE)
1178	{	813	{
1179	/* write: check length and adjust. */	814	/* write: check length and adjust. */
1180	if (length < 0 || length + dataoffset > svlen)	815	if (!SvOK (length) || len + dataoffset > svlen)
1181	length = svlen - dataoffset;	816	len = svlen - dataoffset;
1182	}	817	}
1183	else	818	else
1184	{	819	{
1185	/* read: grow scalar as necessary */	820	/* read: check type and grow scalar as necessary */
		821	SvUPGRADE (data, SVt_PV);
1186	svptr = SvGROW (data, length + dataoffset);	822	svptr = SvGROW (data, len + dataoffset + 1);
1187	}	823	}
1188
1189	if (length < 0)
1190	croak ("length must not be negative");
1191		824
1192	{	825	{
1193	dREQ;	826	dREQ;
1194		827
1195	req->type = ix;	828	req->type = ix;
1196	req->fh = newSVsv (fh);	829	req->sv1 = newSVsv (fh);
1197	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	830	req->int1 = fd;
1198	: IoOFP (sv_2io (fh)));	831	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1199	req->offset = offset;	832	req->size = len;
1200	req->length = length;
1201	req->data = SvREFCNT_inc (data);	833	req->sv2 = SvREFCNT_inc (data);
1202	req->dataptr = (char *)svptr + dataoffset;	834	req->ptr2 = (char *)svptr + dataoffset;
		835	req->stroffset = dataoffset;
1203		836
1204	if (!SvREADONLY (data))	837	if (!SvREADONLY (data))
1205	{	838	{
1206	SvREADONLY_on (data);	839	SvREADONLY_on (data);
1207	req->data2ptr = (void *)data;	840	req->flags |= FLAG_SV2_RO_OFF;
1208	}	841	}
1209		842
1210	REQ_SEND;	843	REQ_SEND;
1211	}	844	}
1212	}	845	}
1213		846
1214	void	847	void
		848	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		849	PROTOTYPE: $$;$
		850	PPCODE:
		851	{
		852	SV *data;
		853	dREQ;
		854
		855	req->type = EIO_READLINK;
		856	req->sv1 = newSVsv (path);
		857	req->ptr1 = SvPVbyte_nolen (req->sv1);
		858
		859	REQ_SEND;
		860	}
		861
		862	void
1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	863	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1216	SV * out_fh
1217	SV * in_fh
1218	UV in_offset
1219	UV length
1220	SV * callback
1221	PROTOTYPE: $$$$;$	864	PROTOTYPE: $$$$;$
1222	PPCODE:	865	PPCODE:
1223	{	866	{
		867	int ifd = s_fileno_croak (in_fh , 0);
		868	int ofd = s_fileno_croak (out_fh, 1);
1224	dREQ;	869	dREQ;
1225		870
1226	req->type = REQ_SENDFILE;	871	req->type = EIO_SENDFILE;
1227	req->fh = newSVsv (out_fh);	872	req->sv1 = newSVsv (out_fh);
1228	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	873	req->int1 = ofd;
1229	req->fh2 = newSVsv (in_fh);	874	req->sv2 = newSVsv (in_fh);
1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	875	req->int2 = ifd;
1231	req->offset = in_offset;	876	req->offs = in_offset;
1232	req->length = length;	877	req->size = length;
1233		878
1234	REQ_SEND;	879	REQ_SEND;
1235	}	880	}
1236		881
1237	void	882	void
1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	883	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1239	SV * fh
1240	UV offset
1241	IV length
1242	SV * callback
1243	PROTOTYPE: $$$;$	884	PROTOTYPE: $$$;$
1244	PPCODE:	885	PPCODE:
1245	{	886	{
		887	int fd = s_fileno_croak (fh, 0);
1246	dREQ;	888	dREQ;
1247		889
1248	req->type = REQ_READAHEAD;	890	req->type = EIO_READAHEAD;
1249	req->fh = newSVsv (fh);	891	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	892	req->int1 = fd;
1251	req->offset = offset;	893	req->offs = offset;
1252	req->length = length;	894	req->size = length;
1253		895
1254	REQ_SEND;	896	REQ_SEND;
1255	}	897	}
1256		898
1257	void	899	void
1258	aio_stat (fh_or_path,callback=&PL_sv_undef)	900	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1259	SV * fh_or_path
1260	SV * callback
1261	ALIAS:	901	ALIAS:
1262	aio_stat = REQ_STAT	902	aio_stat = EIO_STAT
1263	aio_lstat = REQ_LSTAT	903	aio_lstat = EIO_LSTAT
		904	aio_statvfs = EIO_STATVFS
1264	PPCODE:	905	PPCODE:
1265	{	906	{
1266	dREQ;	907	dREQ;
1267		908
1268	New (0, req->statdata, 1, Stat_t);	909	req->sv1 = newSVsv (fh_or_path);
1269	if (!req->statdata)
1270	{
1271	req_free (req);
1272	croak ("out of memory during aio_req->statdata allocation");
1273	}
1274		910
1275	if (SvPOK (fh_or_path))	911	if (SvPOK (req->sv1))
1276	{	912	{
1277	req->type = ix;	913	req->type = ix;
1278	req->data = newSVsv (fh_or_path);
1279	req->dataptr = SvPVbyte_nolen (req->data);	914	req->ptr1 = SvPVbyte_nolen (req->sv1);
1280	}	915	}
1281	else	916	else
1282	{	917	{
1283	req->type = REQ_FSTAT;	918	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1284	req->fh = newSVsv (fh_or_path);
1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	919	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1286	}	920	}
1287		921
1288	REQ_SEND;	922	REQ_SEND;
1289	}	923	}
1290		924
1291	void	925	void
		926	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		927	PPCODE:
		928	{
		929	dREQ;
		930
		931	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		932	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		933	req->sv1 = newSVsv (fh_or_path);
		934
		935	if (SvPOK (req->sv1))
		936	{
		937	req->type = EIO_UTIME;
		938	req->ptr1 = SvPVbyte_nolen (req->sv1);
		939	}
		940	else
		941	{
		942	req->type = EIO_FUTIME;
		943	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		944	}
		945
		946	REQ_SEND;
		947	}
		948
		949	void
		950	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		951	PPCODE:
		952	{
		953	dREQ;
		954
		955	req->sv1 = newSVsv (fh_or_path);
		956	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		957
		958	if (SvPOK (req->sv1))
		959	{
		960	req->type = EIO_TRUNCATE;
		961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962	}
		963	else
		964	{
		965	req->type = EIO_FTRUNCATE;
		966	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		967	}
		968
		969	REQ_SEND;
		970	}
		971
		972	void
		973	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		974	ALIAS:
		975	aio_chmod = EIO_CHMOD
		976	aio_mkdir = EIO_MKDIR
		977	PPCODE:
		978	{
		979	dREQ;
		980
		981	req->int2 = mode;
		982	req->sv1 = newSVsv (fh_or_path);
		983
		984	if (SvPOK (req->sv1))
		985	{
		986	req->type = ix;
		987	req->ptr1 = SvPVbyte_nolen (req->sv1);
		988	}
		989	else
		990	{
		991	req->type = EIO_FCHMOD;
		992	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		993	}
		994
		995	REQ_SEND;
		996	}
		997
		998	void
		999	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1000	PPCODE:
		1001	{
		1002	dREQ;
		1003
		1004	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1005	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1006	req->sv1 = newSVsv (fh_or_path);
		1007
		1008	if (SvPOK (req->sv1))
		1009	{
		1010	req->type = EIO_CHOWN;
		1011	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1012	}
		1013	else
		1014	{
		1015	req->type = EIO_FCHOWN;
		1016	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1017	}
		1018
		1019	REQ_SEND;
		1020	}
		1021
		1022	void
		1023	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1024	PPCODE:
		1025	{
		1026	dREQ;
		1027
		1028	req->type = EIO_READDIR;
		1029	req->sv1 = newSVsv (pathname);
		1030	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1031	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1032
		1033	if (flags & EIO_READDIR_DENTS)
		1034	req->int1 |= EIO_READDIR_CUSTOM2;
		1035
		1036	REQ_SEND;
		1037	}
		1038
		1039	void
1292	aio_unlink (pathname,callback=&PL_sv_undef)	1040	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1293	SV * pathname
1294	SV * callback
1295	ALIAS:	1041	ALIAS:
1296	aio_unlink = REQ_UNLINK	1042	aio_unlink = EIO_UNLINK
1297	aio_rmdir = REQ_RMDIR	1043	aio_rmdir = EIO_RMDIR
1298	aio_readdir = REQ_READDIR	1044	aio_readdir = EIO_READDIR
1299	PPCODE:	1045	PPCODE:
1300	{	1046	{
1301	dREQ;	1047	dREQ;
1302		1048
1303	req->type = ix;	1049	req->type = ix;
1304	req->data = newSVsv (pathname);	1050	req->sv1 = newSVsv (pathname);
1305	req->dataptr = SvPVbyte_nolen (req->data);	1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
1306		1052
1307	REQ_SEND;	1053	REQ_SEND;
1308	}	1054	}
1309		1055
1310	void	1056	void
1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1057	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1312	SV * oldpath
1313	SV * newpath
1314	SV * callback
1315	ALIAS:	1058	ALIAS:
1316	aio_link = REQ_LINK	1059	aio_link = EIO_LINK
1317	aio_symlink = REQ_SYMLINK	1060	aio_symlink = EIO_SYMLINK
1318	aio_rename = REQ_RENAME	1061	aio_rename = EIO_RENAME
1319	PPCODE:	1062	PPCODE:
1320	{	1063	{
1321	dREQ;	1064	dREQ;
1322		1065
1323	req->type = ix;	1066	req->type = ix;
1324	req->fh = newSVsv (oldpath);	1067	req->sv1 = newSVsv (oldpath);
1325	req->data2ptr = SvPVbyte_nolen (req->fh);	1068	req->ptr1 = SvPVbyte_nolen (req->sv1);
1326	req->data = newSVsv (newpath);	1069	req->sv2 = newSVsv (newpath);
1327	req->dataptr = SvPVbyte_nolen (req->data);	1070	req->ptr2 = SvPVbyte_nolen (req->sv2);
1328		1071
1329	REQ_SEND;	1072	REQ_SEND;
1330	}	1073	}
1331		1074
1332	void	1075	void
1333	aio_busy (delay,callback=&PL_sv_undef)	1076	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1334	double delay
1335	SV * callback
1336	PPCODE:	1077	PPCODE:
1337	{	1078	{
1338	dREQ;	1079	dREQ;
1339		1080
1340	req->type = REQ_BUSY;	1081	req->type = EIO_MKNOD;
1341	req->fd = delay < 0. ? 0 : delay;	1082	req->sv1 = newSVsv (pathname);
1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1083	req->ptr1 = SvPVbyte_nolen (req->sv1);
1343		1084	req->int2 = (mode_t)mode;
		1085	req->offs = dev;
		1086
1344	REQ_SEND;	1087	REQ_SEND;
1345	}	1088	}
1346		1089
1347	void	1090	void
		1091	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1092	ALIAS:
		1093	aio_mtouch = EIO_MTOUCH
		1094	aio_msync = EIO_MSYNC
		1095	PROTOTYPE: $$$$;$
		1096	PPCODE:
		1097	{
		1098	STRLEN svlen;
		1099	UV len = SvUV (length);
		1100	char *svptr = SvPVbyte (data, svlen);
		1101
		1102	if (offset < 0)
		1103	offset += svlen;
		1104
		1105	if (offset < 0 || offset > svlen)
		1106	croak ("offset outside of scalar");
		1107
		1108	if (!SvOK (length) || len + offset > svlen)
		1109	len = svlen - offset;
		1110
		1111	{
		1112	dREQ;
		1113
		1114	req->type = ix;
		1115	req->size = len;
		1116	req->sv2 = SvREFCNT_inc (data);
		1117	req->ptr2 = (char *)svptr + offset;
		1118	req->int1 = flags;
		1119
		1120	REQ_SEND;
		1121	}
		1122	}
		1123
		1124	void
		1125	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1126	PPCODE:
		1127	{
		1128	dREQ;
		1129
		1130	req->type = EIO_BUSY;
		1131	req->nv1 = delay < 0. ? 0. : delay;
		1132
		1133	REQ_SEND;
		1134	}
		1135
		1136	void
1348	aio_group (callback=&PL_sv_undef)	1137	aio_group (SV *callback=&PL_sv_undef)
1349	SV * callback
1350	PROTOTYPE: ;$	1138	PROTOTYPE: ;$
1351	PPCODE:	1139	PPCODE:
1352	{	1140	{
1353	dREQ;	1141	dREQ;
1354		1142
1355	req->type = REQ_GROUP;	1143	req->type = EIO_GROUP;
		1144
1356	req_send (req);	1145	req_submit (req);
1357
1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1146	XPUSHs (req_sv (req, aio_grp_stash));
1359	}	1147	}
1360		1148
1361	void	1149	void
1362	aio_nop (callback=&PL_sv_undef)	1150	aio_nop (SV *callback=&PL_sv_undef)
1363	SV * callback	1151	ALIAS:
		1152	aio_nop = EIO_NOP
		1153	aio_sync = EIO_SYNC
1364	PPCODE:	1154	PPCODE:
1365	{	1155	{
1366	dREQ;	1156	dREQ;
1367		1157
1368	req->type = REQ_NOP;	1158	req->type = ix;
1369		1159
1370	REQ_SEND;	1160	REQ_SEND;
1371	}	1161	}
1372		1162
1373	void	1163	int
1374	aioreq_pri (int pri = DEFAULT_PRI)	1164	aioreq_pri (int pri = 0)
1375	CODE:	1165	PROTOTYPE: ;$
		1166	CODE:
		1167	RETVAL = next_pri;
		1168	if (items > 0)
		1169	{
1376	if (pri < PRI_MIN) pri = PRI_MIN;	1170	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1377	if (pri > PRI_MAX) pri = PRI_MAX;	1171	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1378	next_pri = pri + PRI_BIAS;	1172	next_pri = pri;
		1173	}
		1174	OUTPUT:
		1175	RETVAL
1379		1176
1380	void	1177	void
1381	aioreq_nice (int nice = 0)	1178	aioreq_nice (int nice = 0)
1382	CODE:	1179	CODE:
1383	nice = next_pri - nice;	1180	nice = next_pri - nice;
1384	if (nice < PRI_MIN) nice = PRI_MIN;	1181	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1385	if (nice > PRI_MAX) nice = PRI_MAX;	1182	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1386	next_pri = nice + PRI_BIAS;	1183	next_pri = nice;
1387		1184
1388	void	1185	void
1389	flush ()	1186	flush ()
1390	PROTOTYPE:	1187	PROTOTYPE:
1391	CODE:	1188	CODE:
1392	while (nreqs)	1189	while (eio_nreqs ())
1393	{	1190	{
1394	poll_wait ();	1191	poll_wait ();
1395	poll_cb ();	1192	poll_cb ();
1396	}	1193	}
1397		1194
1398	void	1195	int
1399	poll()	1196	poll()
1400	PROTOTYPE:	1197	PROTOTYPE:
1401	CODE:	1198	CODE:
1402	if (nreqs)
1403	{
1404	poll_wait ();	1199	poll_wait ();
1405	poll_cb ();	1200	RETVAL = poll_cb ();
1406	}	1201	OUTPUT:
		1202	RETVAL
1407		1203
1408	int	1204	int
1409	poll_fileno()	1205	poll_fileno()
1410	PROTOTYPE:	1206	PROTOTYPE:
1411	CODE:	1207	CODE:
1412	RETVAL = respipe [0];	1208	RETVAL = s_epipe_fd (&respipe);
1413	OUTPUT:	1209	OUTPUT:
1414	RETVAL	1210	RETVAL
1415		1211
1416	int	1212	int
1417	poll_cb(...)	1213	poll_cb(...)
…		…
1423		1219
1424	void	1220	void
1425	poll_wait()	1221	poll_wait()
1426	PROTOTYPE:	1222	PROTOTYPE:
1427	CODE:	1223	CODE:
1428	if (nreqs)
1429	poll_wait ();	1224	poll_wait ();
1430		1225
1431	int	1226	int
1432	nreqs()	1227	nreqs()
1433	PROTOTYPE:	1228	PROTOTYPE:
1434	CODE:	1229	CODE:
1435	RETVAL = nreqs;	1230	RETVAL = eio_nreqs ();
1436	OUTPUT:	1231	OUTPUT:
1437	RETVAL	1232	RETVAL
1438		1233
		1234	int
		1235	nready()
		1236	PROTOTYPE:
		1237	CODE:
		1238	RETVAL = eio_nready ();
		1239	OUTPUT:
		1240	RETVAL
		1241
		1242	int
		1243	npending()
		1244	PROTOTYPE:
		1245	CODE:
		1246	RETVAL = eio_npending ();
		1247	OUTPUT:
		1248	RETVAL
		1249
		1250	int
		1251	nthreads()
		1252	PROTOTYPE:
		1253	CODE:
		1254	RETVAL = eio_nthreads ();
		1255	OUTPUT:
		1256	RETVAL
		1257
		1258	int
		1259	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1260	PROTOTYPE: $$$$
		1261	CODE:
		1262	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1263	RETVAL = posix_fadvise (fh, offset, length, advice);
		1264	#else
		1265	RETVAL = errno = ENOSYS;
		1266	#endif
		1267	OUTPUT:
		1268	RETVAL
		1269
		1270	ssize_t
		1271	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1272	PROTOTYPE: $$$$
		1273	CODE:
		1274	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1275	OUTPUT:
		1276	RETVAL
		1277
		1278	void _on_next_submit (SV *cb)
		1279	CODE:
		1280	SvREFCNT_dec (on_next_submit);
		1281	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1282
1439	PROTOTYPES: DISABLE	1283	PROTOTYPES: DISABLE
1440		1284
1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1285	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442		1286
1443	void	1287	void
1444	cancel (aio_req_ornot req)	1288	cancel (aio_req_ornot req)
1445	CODE:	1289	CODE:
1446	req_cancel (req);	1290	eio_cancel (req);
1447		1291
1448	void	1292	void
1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1293	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1450	CODE:	1294	PPCODE:
		1295	{
		1296	if (GIMME_V != G_VOID)
		1297	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1298
		1299	if (items > 1)
		1300	{
		1301	SV *cb_cv =get_cb (callback);
		1302
1451	SvREFCNT_dec (req->callback);	1303	SvREFCNT_dec (req->callback);
1452	req->callback = newSVsv (callback);	1304	req->callback = SvREFCNT_inc (cb_cv);
		1305	}
		1306	}
1453		1307
1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1308	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1455		1309
1456	void	1310	void
1457	add (aio_req grp, ...)	1311	add (aio_req grp, ...)
1458	PPCODE:	1312	PPCODE:
1459	{	1313	{
1460	int i;	1314	int i;
1461	aio_req req;
1462		1315
1463	if (grp->fd == 2)	1316	if (grp->int1 == 2)
1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1317	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1465		1318
1466	for (i = 1; i < items; ++i )	1319	for (i = 1; i < items; ++i )
1467	{	1320	{
		1321	aio_req req;
		1322
1468	if (GIMME_V != G_VOID)	1323	if (GIMME_V != G_VOID)
1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1324	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1470		1325
1471	req = SvAIO_REQ (ST (i));	1326	req = SvAIO_REQ (ST (i));
1472		1327
1473	if (req)	1328	if (req)
1474	{	1329	eio_grp_add (grp, req);
1475	++grp->length;
1476	req->grp = grp;
1477
1478	req->grp_prev = 0;
1479	req->grp_next = grp->grp_first;
1480
1481	if (grp->grp_first)
1482	grp->grp_first->grp_prev = req;
1483
1484	grp->grp_first = req;
1485	}
1486	}	1330	}
1487	}	1331	}
1488		1332
1489	void	1333	void
1490	cancel_subs (aio_req_ornot req)	1334	cancel_subs (aio_req_ornot req)
…		…
1494	void	1338	void
1495	result (aio_req grp, ...)	1339	result (aio_req grp, ...)
1496	CODE:	1340	CODE:
1497	{	1341	{
1498	int i;	1342	int i;
		1343	AV *av;
		1344
		1345	grp->errorno = errno;
		1346
1499	AV *av = newAV ();	1347	av = newAV ();
		1348	av_extend (av, items - 1);
1500		1349
1501	for (i = 1; i < items; ++i )	1350	for (i = 1; i < items; ++i )
1502	av_push (av, newSVsv (ST (i)));	1351	av_push (av, newSVsv (ST (i)));
1503		1352
1504	SvREFCNT_dec (grp->data);	1353	SvREFCNT_dec (grp->sv1);
1505	grp->data = (SV *)av;	1354	grp->sv1 = (SV *)av;
1506	}	1355	}
		1356
		1357	void
		1358	errno (aio_req grp, int errorno = errno)
		1359	CODE:
		1360	grp->errorno = errorno;
1507		1361
1508	void	1362	void
1509	limit (aio_req grp, int limit)	1363	limit (aio_req grp, int limit)
1510	CODE:	1364	CODE:
1511	grp->fd2 = limit;	1365	eio_grp_limit (grp, limit);
1512	aio_grp_feed (grp);
1513		1366
1514	void	1367	void
1515	feed (aio_req grp, SV *callback=&PL_sv_undef)	1368	feed (aio_req grp, SV *callback=&PL_sv_undef)
1516	CODE:	1369	CODE:
1517	{	1370	{
1518	SvREFCNT_dec (grp->fh2);	1371	SvREFCNT_dec (grp->sv2);
1519	grp->fh2 = newSVsv (callback);	1372	grp->sv2 = newSVsv (callback);
		1373	grp->feed = aio_grp_feed;
1520		1374
1521	if (grp->fd2 <= 0)	1375	if (grp->int2 <= 0)
1522	grp->fd2 = 2;	1376	grp->int2 = 2;
1523		1377
1524	aio_grp_feed (grp);	1378	eio_grp_limit (grp, grp->int2);
1525	}	1379	}
1526		1380

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines