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/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 1.158 by root, Sat Jan 2 14:11:32 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>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	/* perl namespace pollution */
33	# if __linux	21	#undef VERSION
34	# include <sys/sendfile.h>	22
35	# elif __freebsd	23	#ifdef _WIN32
36	# include <sys/socket.h>	24
37	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
38	# elif __hpux	26	# undef malloc
39	# include <sys/socket.h>	27	# undef free
40	# elif __solaris /* not yet */	28
41	# include <sys/sendfile.h>	29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
42	# else	61	#else
43	# error sendfile support requested but not available	62
44	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
45	#endif	70	#endif
46		71
47	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
48	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
49	# define NAME_MAX 4096	74	#undef readdir
		75	#undef opendir
		76	#undef closedir
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
50	#endif	89	#endif
51		90
52	#if __ia64	91	/*****************************************************************************/
53	# define STACKSIZE 65536	92
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	93	#if __GNUC__ >= 3
55	# define STACKSIZE PTHREAD_STACK_MIN	94	# define expect(expr,value) __builtin_expect ((expr),(value))
56	#else	95	#else
57	# define STACKSIZE 16384	96	# define expect(expr,value) (expr)
58	#endif	97	#endif
59		98
60	/* buffer size for various temporary buffers */	99	#define expect_false(expr) expect ((expr) != 0, 0)
61	#define AIO_BUFSIZE 65536	100	#define expect_true(expr) expect ((expr) != 0, 1)
62		101
63	#define dBUF \	102	/*****************************************************************************/
64	char *aio_buf; \	103
65	LOCK (wrklock); \	104	typedef SV SV8; /* byte-sv, used for argument-checking */
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	105	typedef int aio_rfd; /* read file desriptor */
67	UNLOCK (wrklock); \	106	typedef int aio_wfd; /* write file descriptor */
68	if (!aio_buf) \	107
69	return -1;	108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/eio.h"
		119
		120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
70		149
71	enum {	150	enum {
72	REQ_QUIT,	151	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	};	152	};
84		153
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	154	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		155
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;	156	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
119		158
120	enum {	159	static SV *on_next_submit;
121	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,	161	static int max_outstanding;
123		162
124	DEFAULT_PRI = 0,	163	static s_epipe respipe;
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128		164
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);	165	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	166	static void req_cancel (aio_req req);
246		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	s_epipe_signal (&respipe);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	s_epipe_drain (&respipe);
		178	}
		179
247	/* must be called at most once */	180	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	181	static SV *req_sv (aio_req req, HV *stash)
249	{	182	{
250	if (!req->self)	183	if (!req->self)
251	{	184	{
252	req->self = (SV *)newHV ();	185	req->self = (SV *)newHV ();
253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
254	}	187	}
255		188
256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
257	}	190	}
258		191
259	static aio_req SvAIO_REQ (SV *sv)	192	static aio_req SvAIO_REQ (SV *sv)
260	{	193	{
261	MAGIC *mg;	194	MAGIC *mg;
262		195
263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	196	if (!SvROK (sv)
		197	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		198	&& SvSTASH (SvRV (sv)) != aio_req_stash
		199	&& !sv_derived_from (sv, "IO::AIO::REQ")))
264	croak ("object of class " AIO_REQ_KLASS " expected");	200	croak ("object of class IO::AIO::REQ expected");
265		201
266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
267		203
268	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	205	}
270		206
271	static void aio_grp_feed (aio_req grp)	207	static void aio_grp_feed (aio_req grp)
272	{	208	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	209	if (grp->sv2 && SvOK (grp->sv2))
274	{	210	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	211	dSP;
280		212
281	ENTER;	213	ENTER;
282	SAVETMPS;	214	SAVETMPS;
283	PUSHMARK (SP);	215	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	XPUSHs (req_sv (grp, aio_grp_stash));
285	PUTBACK;	217	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	219	SPAGAIN;
288	FREETMPS;	220	FREETMPS;
289	LEAVE;	221	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	}	222	}
300	}	223	}
301		224
302	static void aio_grp_dec (aio_req grp)	225	static void req_submit (eio_req *req)
303	{	226	{
304	--grp->length;	227	eio_submit (req);
305		228
306	/* call feeder, if applicable */	229	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	230	{
312	req_invoke (grp);	231	dSP;
313	req_free (grp);	232	SV *cb = sv_2mortal (on_next_submit);
		233
		234	on_next_submit = 0;
		235
		236	PUSHMARK (SP);
		237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
314	}	239	}
315	}	240	}
316		241
317	static void poll_wait ()	242	static int req_invoke (eio_req *req)
318	{	243	{
319	fd_set rfd;	244	dSP;
320		245
321	while (nreqs)	246	if (req->flags & FLAG_SV2_RO_OFF)
		247	SvREADONLY_off (req->sv2);
		248
		249	if (!EIO_CANCELLED (req) && req->callback)
322	{	250	{
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;	251	ENTER;
351	SAVETMPS;	252	SAVETMPS;
352	PUSHMARK (SP);	253	PUSHMARK (SP);
353	EXTEND (SP, 1);	254	EXTEND (SP, 1);
354		255
355	switch (req->type)	256	switch (req->type)
356	{	257	{
357	case REQ_READDIR:	258	case EIO_READDIR:
358	{	259	{
359	SV *rv = &PL_sv_undef;	260	SV *rv = &PL_sv_undef;
360		261
361	if (req->result >= 0)	262	if (req->result >= 0)
362	{	263	{
363	int i;	264	int i;
364	char *buf = req->data2ptr;	265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	267	AV *av = newAV ();
366		268
367	av_extend (av, req->result - 1);	269	av_extend (av, req->result - 1);
368		270
369	for (i = 0; i < req->result; ++i)	271	for (i = 0; i < req->result; ++i)
370	{	272	{
371	SV *sv = newSVpv (buf, 0);	273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		276
		277	if (req->int1 & EIO_READDIR_CUSTOM2)
		278	{
		279	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		280	AV *avent = newAV ();
		281
		282	av_extend (avent, 2);
		283
		284	if (!sv_type [ent->type])
		285	{
		286	sv_type [ent->type] = newSViv (ent->type);
		287	SvREADONLY_on (sv_type [ent->type]);
		288	}
		289
		290	av_store (avent, 0, namesv);
		291	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		292	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		293
		294	av_store (av, i, newRV_noinc ((SV *)avent));
		295	}
		296	else
373	av_store (av, i, sv);	297	av_store (av, i, namesv);
		298
		299	++ent;
		300	}
		301	else
		302	{
		303	SV *name = newSVpv (names, 0);
		304	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
		306	}
375	}	307	}
376		308
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	309	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	310	}
379		311
380	PUSHs (rv);	312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	316	}
382	break;	317	break;
383		318
384	case REQ_OPEN:	319	case EIO_OPEN:
385	{	320	{
386	/* convert fd to fh */	321	/* convert fd to fh */
387	SV *fh;	322	SV *fh = &PL_sv_undef;
388		323
389	PUSHs (sv_2mortal (newSViv (req->result)));	324	if (req->result >= 0)
390	PUTBACK;	325	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	326	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	327	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		328	char sym [64];
		329	int symlen;
		330
		331	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		332	gv_init (gv, aio_stash, sym, symlen, 0);
393		333
394	fh = SvREFCNT_inc (POPs);	334	symlen = snprintf (
		335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
395		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
396	PUSHMARK (SP);	346	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	347	}
399	break;	348	break;
400		349
401	case REQ_GROUP:	350	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	351	req->int1 = 2; /* mark group as finished */
403		352
404	if (req->data)	353	if (req->sv1)
405	{	354	{
406	int i;	355	int i;
407	AV *av = (AV *)req->data;	356	AV *av = (AV *)req->sv1;
408		357
409	EXTEND (SP, AvFILL (av) + 1);	358	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	359	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	360	PUSHs (*av_fetch (av, i, 0));
412	}	361	}
413	break;	362	break;
414		363
415	case REQ_NOP:	364	case EIO_NOP:
416	case REQ_BUSY:	365	case EIO_BUSY:
417	break;	366	break;
		367
		368	case EIO_READLINK:
		369	if (req->result > 0)
		370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		371	break;
		372
		373	case EIO_STAT:
		374	case EIO_LSTAT:
		375	case EIO_FSTAT:
		376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		377	PL_laststatval = req->result;
		378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		379	PUSHs (sv_2mortal (newSViv (req->result)));
		380	break;
		381
		382	case EIO_READ:
		383	{
		384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
		390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
418		396
419	default:	397	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	398	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	399	break;
422	}	400	}
423		401
		402	errno = req->errorno;
424		403
425	PUTBACK;	404	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	406	SPAGAIN;
428		407
429	FREETMPS;	408	FREETMPS;
430	LEAVE;	409	LEAVE;
		410
		411	PUTBACK;
431	}	412	}
432		413
433	if (req->grp)	414	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	}	415	}
453		416
454	static void req_free (aio_req req)	417	static void req_destroy (aio_req req)
455	{	418	{
456	if (req->self)	419	if (req->self)
457	{	420	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	421	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	422	SvREFCNT_dec (req->self);
460	}	423	}
461		424
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	425	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	426	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		428
471	Safefree (req);	429	Safefree (req);
472	}	430	}
473		431
474	static void req_cancel_subs (aio_req grp)	432	static void req_cancel_subs (aio_req grp)
475	{	433	{
476	aio_req sub;	434	aio_req sub;
477		435
478	if (grp->type != REQ_GROUP)	436	if (grp->type != EIO_GROUP)
479	return;	437	return;
480		438
481	SvREFCNT_dec (grp->fh2);	439	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	440	grp->sv2 = 0;
483		441
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	442	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	443	}
487		444
488	static void req_cancel (aio_req req)	445	static void
		446	create_respipe (void)
489	{	447	{
490	req->flags |= FLAG_CANCELLED;	448	if (s_epipe_renew (&respipe))
491		449	croak ("IO::AIO: unable to initialize result pipe");
492	req_cancel_subs (req);
493	}	450	}
494		451
		452	static void poll_wait (void)
		453	{
		454	while (eio_nreqs ())
		455	{
		456	int size;
		457
		458	X_LOCK (reslock);
		459	size = res_queue.size;
		460	X_UNLOCK (reslock);
		461
		462	if (size)
		463	return;
		464
		465	etp_maybe_start_thread ();
		466
		467	s_epipe_wait (&respipe);
		468	}
		469	}
		470
495	static int poll_cb ()	471	static int poll_cb (void)
496	{	472	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	473	for (;;)
503	{	474	{
504	LOCK (reslock);	475	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		476
507	if (req)	477	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;	478	croak (0);
522		479
523	--nreqs;	480	if (!max_outstanding || max_outstanding > eio_nreqs ())
		481	return res;
524		482
525	if (req->type == REQ_QUIT)	483	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	}	484	}
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	}	485	}
1032		486
1033	static void atfork_child (void)	487	static void atfork_child (void)
1034	{	488	{
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 ();	489	create_respipe ();
		490	}
1060		491
1061	atfork_parent ();	492	static SV *
		493	get_cb (SV *cb_sv)
		494	{
		495	SvGETMAGIC (cb_sv);
		496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1062	}	497	}
1063		498
1064	#define dREQ \	499	#define dREQ \
		500	SV *cb_cv; \
1065	aio_req req; \	501	aio_req req; \
1066	int req_pri = next_pri; \	502	int req_pri = next_pri; \
1067	next_pri = DEFAULT_PRI + PRI_BIAS; \	503	next_pri = EIO_PRI_DEFAULT; \
1068	\	504	\
1069	if (SvOK (callback) && !SvROK (callback)) \	505	cb_cv = get_cb (callback); \
1070	croak ("callback must be undef or of reference type"); \
1071	\	506	\
1072	Newz (0, req, 1, aio_cb); \	507	Newz (0, req, 1, eio_req); \
1073	if (!req) \	508	if (!req) \
1074	croak ("out of memory during aio_req allocation"); \	509	croak ("out of memory during eio_req allocation"); \
1075	\	510	\
1076	req->callback = newSVsv (callback); \	511	req->callback = SvREFCNT_inc (cb_cv); \
1077	req->pri = req_pri	512	req->pri = req_pri
1078		513
1079	#define REQ_SEND \	514	#define REQ_SEND \
		515	PUTBACK; \
1080	req_send (req); \	516	req_submit (req); \
		517	SPAGAIN; \
1081	\	518	\
1082	if (GIMME_V != G_VOID) \	519	if (GIMME_V != G_VOID) \
1083	XPUSHs (req_sv (req, AIO_REQ_KLASS));	520	XPUSHs (req_sv (req, aio_req_stash));
1084		521
1085	MODULE = IO::AIO PACKAGE = IO::AIO	522	MODULE = IO::AIO PACKAGE = IO::AIO
1086		523
1087	PROTOTYPES: ENABLE	524	PROTOTYPES: ENABLE
1088		525
1089	BOOT:	526	BOOT:
1090	{	527	{
		528	static const struct {
		529	const char *name;
		530	IV iv;
		531	} *civ, const_iv[] = {
		532	# define const_iv(name, value) { # name, (IV) value },
		533	# define const_eio(name) { # name, (IV) EIO_ ## name },
		534	const_iv (EXDEV , EXDEV)
		535	const_iv (ENOSYS , ENOSYS)
		536	const_iv (O_RDONLY, O_RDONLY)
		537	const_iv (O_WRONLY, O_WRONLY)
		538	const_iv (O_CREAT , O_CREAT)
		539	const_iv (O_TRUNC , O_TRUNC)
		540	#ifndef _WIN32
		541	const_iv (S_IFIFO , S_IFIFO)
		542	#endif
		543	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		544	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		545	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		546	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		547	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		548	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		549
		550	const_eio (MS_ASYNC)
		551	const_eio (MS_INVALIDATE)
		552	const_eio (MS_SYNC)
		553
		554	const_eio (MT_MODIFY)
		555
		556	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		557	const_eio (SYNC_FILE_RANGE_WRITE)
		558	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		559
		560	const_eio (READDIR_DENTS)
		561	const_eio (READDIR_DIRS_FIRST)
		562	const_eio (READDIR_STAT_ORDER)
		563	const_eio (READDIR_FOUND_UNKNOWN)
		564
		565	const_eio (DT_UNKNOWN)
		566	const_eio (DT_FIFO)
		567	const_eio (DT_CHR)
		568	const_eio (DT_DIR)
		569	const_eio (DT_BLK)
		570	const_eio (DT_REG)
		571	const_eio (DT_LNK)
		572	const_eio (DT_SOCK)
		573	const_eio (DT_WHT)
		574	};
		575
1091	HV *stash = gv_stashpv ("IO::AIO", 1);	576	aio_stash = gv_stashpv ("IO::AIO" , 1);
1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	577	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	578	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1095		579
		580	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		581	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		582
1096	create_pipe ();	583	create_respipe ();
1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1098	}
1099		584
		585	if (eio_init (want_poll, done_poll) < 0)
		586	croak ("IO::AIO: unable to initialise eio library");
		587
		588	/* atfork child called in fifo order, so before eio's handler */
		589	X_THREAD_ATFORK (0, 0, atfork_child);
		590	}
		591
1100	void	592	void
1101	min_parallel (nthreads)	593	max_poll_reqs (int nreqs)
1102	int nthreads
1103	PROTOTYPE: $	594	PROTOTYPE: $
		595	CODE:
		596	eio_set_max_poll_reqs (nreqs);
1104		597
1105	void	598	void
1106	max_parallel (nthreads)	599	max_poll_time (double nseconds)
1107	int nthreads
1108	PROTOTYPE: $	600	PROTOTYPE: $
		601	CODE:
		602	eio_set_max_poll_time (nseconds);
1109		603
1110	void	604	void
		605	min_parallel (int nthreads)
		606	PROTOTYPE: $
		607	CODE:
		608	eio_set_min_parallel (nthreads);
		609
		610	void
		611	max_parallel (int nthreads)
		612	PROTOTYPE: $
		613	CODE:
		614	eio_set_max_parallel (nthreads);
		615
		616	void
		617	max_idle (int nthreads)
		618	PROTOTYPE: $
		619	CODE:
		620	eio_set_max_idle (nthreads);
		621
		622	void
		623	max_outstanding (int maxreqs)
		624	PROTOTYPE: $
		625	CODE:
		626	max_outstanding = maxreqs;
		627
		628	void
1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	629	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: $$$;$	630	PROTOTYPE: $$$;$
1117	PPCODE:	631	PPCODE:
1118	{	632	{
1119	dREQ;	633	dREQ;
1120		634
1121	req->type = REQ_OPEN;	635	req->type = EIO_OPEN;
1122	req->data = newSVsv (pathname);	636	req->sv1 = newSVsv (pathname);
1123	req->dataptr = SvPVbyte_nolen (req->data);	637	req->ptr1 = SvPVbyte_nolen (req->sv1);
1124	req->fd = flags;	638	req->int1 = flags;
1125	req->mode = mode;	639	req->int2 = mode;
1126		640
1127	REQ_SEND;	641	REQ_SEND;
1128	}	642	}
1129		643
1130	void	644	void
1131	aio_close (fh,callback=&PL_sv_undef)	645	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1132	SV * fh
1133	SV * callback
1134	PROTOTYPE: $;$	646	PROTOTYPE: $;$
1135	ALIAS:	647	ALIAS:
1136	aio_close = REQ_CLOSE
1137	aio_fsync = REQ_FSYNC	648	aio_fsync = EIO_FSYNC
1138	aio_fdatasync = REQ_FDATASYNC	649	aio_fdatasync = EIO_FDATASYNC
1139	PPCODE:	650	PPCODE:
1140	{	651	{
		652	int fd = s_fileno_croak (fh, 0);
1141	dREQ;	653	dREQ;
1142		654
1143	req->type = ix;	655	req->type = ix;
1144	req->fh = newSVsv (fh);	656	req->sv1 = newSVsv (fh);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	657	req->int1 = fd;
1146		658
1147	REQ_SEND (req);	659	REQ_SEND (req);
1148	}	660	}
1149		661
1150	void	662	void
		663	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		664	PROTOTYPE: $$$$;$
		665	PPCODE:
		666	{
		667	int fd = s_fileno_croak (fh, 0);
		668	dREQ;
		669
		670	req->type = EIO_SYNC_FILE_RANGE;
		671	req->sv1 = newSVsv (fh);
		672	req->int1 = fd;
		673	req->offs = offset;
		674	req->size = nbytes;
		675	req->int2 = flags;
		676
		677	REQ_SEND (req);
		678	}
		679
		680	void
		681	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		682	PROTOTYPE: $;$
		683	PPCODE:
		684	{
		685	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		686	int fd = s_fileno_croak (fh, 0);
		687	dREQ;
		688
		689	if (close_pipe < 0)
		690	{
		691	int pipefd [2];
		692
		693	if (pipe (pipefd) < 0
		694	|| close (pipefd [1]) < 0
		695	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		696	abort (); /*D*/
		697
		698	close_pipe = pipefd [0];
		699	}
		700
		701	req->type = EIO_DUP2;
		702	req->int1 = close_pipe;
		703	req->sv2 = newSVsv (fh);
		704	req->int2 = fd;
		705
		706	REQ_SEND (req);
		707	}
		708
		709	void
1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	710	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1152	SV * fh
1153	UV offset
1154	UV length
1155	SV * data
1156	UV dataoffset
1157	SV * callback
1158	ALIAS:	711	ALIAS:
1159	aio_read = REQ_READ	712	aio_read = EIO_READ
1160	aio_write = REQ_WRITE	713	aio_write = EIO_WRITE
1161	PROTOTYPE: $$$$$;$	714	PROTOTYPE: $$$$$;$
1162	PPCODE:	715	PPCODE:
1163	{	716	{
1164	aio_req req;
1165	STRLEN svlen;	717	STRLEN svlen;
		718	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1166	char *svptr = SvPVbyte (data, svlen);	719	char *svptr = SvPVbyte (data, svlen);
1167		720	UV len = SvUV (length);
1168	SvUPGRADE (data, SVt_PV);
1169	SvPOK_on (data);
1170		721
1171	if (dataoffset < 0)	722	if (dataoffset < 0)
1172	dataoffset += svlen;	723	dataoffset += svlen;
1173		724
1174	if (dataoffset < 0 || dataoffset > svlen)	725	if (dataoffset < 0 || dataoffset > svlen)
1175	croak ("data offset outside of string");	726	croak ("dataoffset outside of data scalar");
1176		727
1177	if (ix == REQ_WRITE)	728	if (ix == EIO_WRITE)
1178	{	729	{
1179	/* write: check length and adjust. */	730	/* write: check length and adjust. */
1180	if (length < 0 || length + dataoffset > svlen)	731	if (!SvOK (length) || len + dataoffset > svlen)
1181	length = svlen - dataoffset;	732	len = svlen - dataoffset;
1182	}	733	}
1183	else	734	else
1184	{	735	{
1185	/* read: grow scalar as necessary */	736	/* read: check type and grow scalar as necessary */
		737	SvUPGRADE (data, SVt_PV);
1186	svptr = SvGROW (data, length + dataoffset);	738	svptr = SvGROW (data, len + dataoffset + 1);
1187	}	739	}
1188
1189	if (length < 0)
1190	croak ("length must not be negative");
1191		740
1192	{	741	{
1193	dREQ;	742	dREQ;
1194		743
1195	req->type = ix;	744	req->type = ix;
1196	req->fh = newSVsv (fh);	745	req->sv1 = newSVsv (fh);
1197	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	746	req->int1 = fd;
1198	: IoOFP (sv_2io (fh)));	747	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1199	req->offset = offset;	748	req->size = len;
1200	req->length = length;
1201	req->data = SvREFCNT_inc (data);	749	req->sv2 = SvREFCNT_inc (data);
1202	req->dataptr = (char *)svptr + dataoffset;	750	req->ptr2 = (char *)svptr + dataoffset;
		751	req->stroffset = dataoffset;
1203		752
1204	if (!SvREADONLY (data))	753	if (!SvREADONLY (data))
1205	{	754	{
1206	SvREADONLY_on (data);	755	SvREADONLY_on (data);
1207	req->data2ptr = (void *)data;	756	req->flags |= FLAG_SV2_RO_OFF;
1208	}	757	}
1209		758
1210	REQ_SEND;	759	REQ_SEND;
1211	}	760	}
1212	}	761	}
1213		762
1214	void	763	void
		764	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		765	PROTOTYPE: $$;$
		766	PPCODE:
		767	{
		768	SV *data;
		769	dREQ;
		770
		771	req->type = EIO_READLINK;
		772	req->sv1 = newSVsv (path);
		773	req->ptr1 = SvPVbyte_nolen (req->sv1);
		774
		775	REQ_SEND;
		776	}
		777
		778	void
1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	779	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: $$$$;$	780	PROTOTYPE: $$$$;$
1222	PPCODE:	781	PPCODE:
1223	{	782	{
		783	int ifd = s_fileno_croak (in_fh , 0);
		784	int ofd = s_fileno_croak (out_fh, 1);
1224	dREQ;	785	dREQ;
1225		786
1226	req->type = REQ_SENDFILE;	787	req->type = EIO_SENDFILE;
1227	req->fh = newSVsv (out_fh);	788	req->sv1 = newSVsv (out_fh);
1228	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	789	req->int1 = ofd;
1229	req->fh2 = newSVsv (in_fh);	790	req->sv2 = newSVsv (in_fh);
1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	791	req->int2 = ifd;
1231	req->offset = in_offset;	792	req->offs = in_offset;
1232	req->length = length;	793	req->size = length;
1233		794
1234	REQ_SEND;	795	REQ_SEND;
1235	}	796	}
1236		797
1237	void	798	void
1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	799	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1239	SV * fh
1240	UV offset
1241	IV length
1242	SV * callback
1243	PROTOTYPE: $$$;$	800	PROTOTYPE: $$$;$
1244	PPCODE:	801	PPCODE:
1245	{	802	{
		803	int fd = s_fileno_croak (fh, 0);
1246	dREQ;	804	dREQ;
1247		805
1248	req->type = REQ_READAHEAD;	806	req->type = EIO_READAHEAD;
1249	req->fh = newSVsv (fh);	807	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	808	req->int1 = fd;
1251	req->offset = offset;	809	req->offs = offset;
1252	req->length = length;	810	req->size = length;
1253		811
1254	REQ_SEND;	812	REQ_SEND;
1255	}	813	}
1256		814
1257	void	815	void
1258	aio_stat (fh_or_path,callback=&PL_sv_undef)	816	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1259	SV * fh_or_path
1260	SV * callback
1261	ALIAS:	817	ALIAS:
1262	aio_stat = REQ_STAT	818	aio_stat = EIO_STAT
1263	aio_lstat = REQ_LSTAT	819	aio_lstat = EIO_LSTAT
1264	PPCODE:	820	PPCODE:
1265	{	821	{
1266	dREQ;	822	dREQ;
1267		823
1268	New (0, req->statdata, 1, Stat_t);	824	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		825
1275	if (SvPOK (fh_or_path))	826	if (SvPOK (req->sv1))
1276	{	827	{
1277	req->type = ix;	828	req->type = ix;
1278	req->data = newSVsv (fh_or_path);
1279	req->dataptr = SvPVbyte_nolen (req->data);	829	req->ptr1 = SvPVbyte_nolen (req->sv1);
1280	}	830	}
1281	else	831	else
1282	{	832	{
1283	req->type = REQ_FSTAT;	833	req->type = EIO_FSTAT;
1284	req->fh = newSVsv (fh_or_path);
1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	834	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1286	}	835	}
1287		836
1288	REQ_SEND;	837	REQ_SEND;
1289	}	838	}
1290		839
1291	void	840	void
		841	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		842	PPCODE:
		843	{
		844	dREQ;
		845
		846	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		847	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		848	req->sv1 = newSVsv (fh_or_path);
		849
		850	if (SvPOK (req->sv1))
		851	{
		852	req->type = EIO_UTIME;
		853	req->ptr1 = SvPVbyte_nolen (req->sv1);
		854	}
		855	else
		856	{
		857	req->type = EIO_FUTIME;
		858	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		859	}
		860
		861	REQ_SEND;
		862	}
		863
		864	void
		865	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		866	PPCODE:
		867	{
		868	dREQ;
		869
		870	req->sv1 = newSVsv (fh_or_path);
		871	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		872
		873	if (SvPOK (req->sv1))
		874	{
		875	req->type = EIO_TRUNCATE;
		876	req->ptr1 = SvPVbyte_nolen (req->sv1);
		877	}
		878	else
		879	{
		880	req->type = EIO_FTRUNCATE;
		881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		882	}
		883
		884	REQ_SEND;
		885	}
		886
		887	void
		888	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		889	ALIAS:
		890	aio_chmod = EIO_CHMOD
		891	aio_mkdir = EIO_MKDIR
		892	PPCODE:
		893	{
		894	dREQ;
		895
		896	req->int2 = mode;
		897	req->sv1 = newSVsv (fh_or_path);
		898
		899	if (SvPOK (req->sv1))
		900	{
		901	req->type = ix;
		902	req->ptr1 = SvPVbyte_nolen (req->sv1);
		903	}
		904	else
		905	{
		906	req->type = EIO_FCHMOD;
		907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		908	}
		909
		910	REQ_SEND;
		911	}
		912
		913	void
		914	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		915	PPCODE:
		916	{
		917	dREQ;
		918
		919	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		920	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		921	req->sv1 = newSVsv (fh_or_path);
		922
		923	if (SvPOK (req->sv1))
		924	{
		925	req->type = EIO_CHOWN;
		926	req->ptr1 = SvPVbyte_nolen (req->sv1);
		927	}
		928	else
		929	{
		930	req->type = EIO_FCHOWN;
		931	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		932	}
		933
		934	REQ_SEND;
		935	}
		936
		937	void
		938	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		939	PPCODE:
		940	{
		941	dREQ;
		942
		943	req->type = EIO_READDIR;
		944	req->sv1 = newSVsv (pathname);
		945	req->ptr1 = SvPVbyte_nolen (req->sv1);
		946	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		947
		948	if (flags & EIO_READDIR_DENTS)
		949	req->int1 |= EIO_READDIR_CUSTOM2;
		950
		951	REQ_SEND;
		952	}
		953
		954	void
1292	aio_unlink (pathname,callback=&PL_sv_undef)	955	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1293	SV * pathname
1294	SV * callback
1295	ALIAS:	956	ALIAS:
1296	aio_unlink = REQ_UNLINK	957	aio_unlink = EIO_UNLINK
1297	aio_rmdir = REQ_RMDIR	958	aio_rmdir = EIO_RMDIR
1298	aio_readdir = REQ_READDIR	959	aio_readdir = EIO_READDIR
1299	PPCODE:	960	PPCODE:
1300	{	961	{
1301	dREQ;	962	dREQ;
1302		963
1303	req->type = ix;	964	req->type = ix;
1304	req->data = newSVsv (pathname);	965	req->sv1 = newSVsv (pathname);
1305	req->dataptr = SvPVbyte_nolen (req->data);	966	req->ptr1 = SvPVbyte_nolen (req->sv1);
		967
		968	REQ_SEND;
		969	}
		970
		971	void
		972	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		973	ALIAS:
		974	aio_link = EIO_LINK
		975	aio_symlink = EIO_SYMLINK
		976	aio_rename = EIO_RENAME
		977	PPCODE:
		978	{
		979	dREQ;
		980
		981	req->type = ix;
		982	req->sv1 = newSVsv (oldpath);
		983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984	req->sv2 = newSVsv (newpath);
		985	req->ptr2 = SvPVbyte_nolen (req->sv2);
1306		986
1307	REQ_SEND;	987	REQ_SEND;
1308	}	988	}
1309		989
1310	void	990	void
1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)	991	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1312	SV * oldpath
1313	SV * newpath
1314	SV * callback
1315	ALIAS:
1316	aio_link = REQ_LINK
1317	aio_symlink = REQ_SYMLINK
1318	aio_rename = REQ_RENAME
1319	PPCODE:	992	PPCODE:
1320	{	993	{
1321	dREQ;	994	dREQ;
1322		995
1323	req->type = ix;	996	req->type = EIO_MKNOD;
1324	req->fh = newSVsv (oldpath);	997	req->sv1 = newSVsv (pathname);
1325	req->data2ptr = SvPVbyte_nolen (req->fh);	998	req->ptr1 = SvPVbyte_nolen (req->sv1);
1326	req->data = newSVsv (newpath);	999	req->int2 = (mode_t)mode;
1327	req->dataptr = SvPVbyte_nolen (req->data);	1000	req->offs = dev;
1328		1001
1329	REQ_SEND;	1002	REQ_SEND;
1330	}	1003	}
1331		1004
1332	void	1005	void
		1006	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1007	ALIAS:
		1008	aio_mtouch = EIO_MTOUCH
		1009	aio_msync = EIO_MSYNC
		1010	PROTOTYPE: $$$$;$
		1011	PPCODE:
		1012	{
		1013	STRLEN svlen;
		1014	UV len = SvUV (length);
		1015	char *svptr = SvPVbyte (data, svlen);
		1016
		1017	if (offset < 0)
		1018	offset += svlen;
		1019
		1020	if (offset < 0 || offset > svlen)
		1021	croak ("offset outside of scalar");
		1022
		1023	if (!SvOK (length) || len + offset > svlen)
		1024	len = svlen - offset;
		1025
		1026	{
		1027	dREQ;
		1028
		1029	req->type = ix;
		1030	req->size = len;
		1031	req->sv2 = SvREFCNT_inc (data);
		1032	req->ptr2 = (char *)svptr + offset;
		1033	req->int1 = flags;
		1034
		1035	REQ_SEND;
		1036	}
		1037	}
		1038
		1039	void
1333	aio_busy (delay,callback=&PL_sv_undef)	1040	aio_busy (double delay, SV *callback=&PL_sv_undef)
1334	double delay
1335	SV * callback
1336	PPCODE:	1041	PPCODE:
1337	{	1042	{
1338	dREQ;	1043	dREQ;
1339		1044
1340	req->type = REQ_BUSY;	1045	req->type = EIO_BUSY;
1341	req->fd = delay < 0. ? 0 : delay;	1046	req->nv1 = delay < 0. ? 0. : delay;
1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1343		1047
1344	REQ_SEND;	1048	REQ_SEND;
1345	}	1049	}
1346		1050
1347	void	1051	void
1348	aio_group (callback=&PL_sv_undef)	1052	aio_group (SV *callback=&PL_sv_undef)
1349	SV * callback
1350	PROTOTYPE: ;$	1053	PROTOTYPE: ;$
1351	PPCODE:	1054	PPCODE:
1352	{	1055	{
1353	dREQ;	1056	dREQ;
1354		1057
1355	req->type = REQ_GROUP;	1058	req->type = EIO_GROUP;
		1059
1356	req_send (req);	1060	req_submit (req);
1357
1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1061	XPUSHs (req_sv (req, aio_grp_stash));
1359	}	1062	}
1360		1063
1361	void	1064	void
1362	aio_nop (callback=&PL_sv_undef)	1065	aio_nop (SV *callback=&PL_sv_undef)
1363	SV * callback	1066	ALIAS:
		1067	aio_nop = EIO_NOP
		1068	aio_sync = EIO_SYNC
1364	PPCODE:	1069	PPCODE:
1365	{	1070	{
1366	dREQ;	1071	dREQ;
1367		1072
1368	req->type = REQ_NOP;	1073	req->type = ix;
1369		1074
1370	REQ_SEND;	1075	REQ_SEND;
1371	}	1076	}
1372		1077
1373	void	1078	int
1374	aioreq_pri (int pri = DEFAULT_PRI)	1079	aioreq_pri (int pri = 0)
1375	CODE:	1080	PROTOTYPE: ;$
		1081	CODE:
		1082	RETVAL = next_pri;
		1083	if (items > 0)
		1084	{
1376	if (pri < PRI_MIN) pri = PRI_MIN;	1085	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1377	if (pri > PRI_MAX) pri = PRI_MAX;	1086	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1378	next_pri = pri + PRI_BIAS;	1087	next_pri = pri;
		1088	}
		1089	OUTPUT:
		1090	RETVAL
1379		1091
1380	void	1092	void
1381	aioreq_nice (int nice = 0)	1093	aioreq_nice (int nice = 0)
1382	CODE:	1094	CODE:
1383	nice = next_pri - nice;	1095	nice = next_pri - nice;
1384	if (nice < PRI_MIN) nice = PRI_MIN;	1096	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1385	if (nice > PRI_MAX) nice = PRI_MAX;	1097	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1386	next_pri = nice + PRI_BIAS;	1098	next_pri = nice;
1387		1099
1388	void	1100	void
1389	flush ()	1101	flush ()
1390	PROTOTYPE:	1102	PROTOTYPE:
1391	CODE:	1103	CODE:
1392	while (nreqs)	1104	while (eio_nreqs ())
1393	{	1105	{
1394	poll_wait ();	1106	poll_wait ();
1395	poll_cb ();	1107	poll_cb ();
1396	}	1108	}
1397		1109
1398	void	1110	int
1399	poll()	1111	poll()
1400	PROTOTYPE:	1112	PROTOTYPE:
1401	CODE:	1113	CODE:
1402	if (nreqs)
1403	{
1404	poll_wait ();	1114	poll_wait ();
1405	poll_cb ();	1115	RETVAL = poll_cb ();
1406	}	1116	OUTPUT:
		1117	RETVAL
1407		1118
1408	int	1119	int
1409	poll_fileno()	1120	poll_fileno()
1410	PROTOTYPE:	1121	PROTOTYPE:
1411	CODE:	1122	CODE:
1412	RETVAL = respipe [0];	1123	RETVAL = s_epipe_fd (&respipe);
1413	OUTPUT:	1124	OUTPUT:
1414	RETVAL	1125	RETVAL
1415		1126
1416	int	1127	int
1417	poll_cb(...)	1128	poll_cb(...)
…		…
1423		1134
1424	void	1135	void
1425	poll_wait()	1136	poll_wait()
1426	PROTOTYPE:	1137	PROTOTYPE:
1427	CODE:	1138	CODE:
1428	if (nreqs)
1429	poll_wait ();	1139	poll_wait ();
1430		1140
1431	int	1141	int
1432	nreqs()	1142	nreqs()
1433	PROTOTYPE:	1143	PROTOTYPE:
1434	CODE:	1144	CODE:
1435	RETVAL = nreqs;	1145	RETVAL = eio_nreqs ();
1436	OUTPUT:	1146	OUTPUT:
1437	RETVAL	1147	RETVAL
1438		1148
		1149	int
		1150	nready()
		1151	PROTOTYPE:
		1152	CODE:
		1153	RETVAL = eio_nready ();
		1154	OUTPUT:
		1155	RETVAL
		1156
		1157	int
		1158	npending()
		1159	PROTOTYPE:
		1160	CODE:
		1161	RETVAL = eio_npending ();
		1162	OUTPUT:
		1163	RETVAL
		1164
		1165	int
		1166	nthreads()
		1167	PROTOTYPE:
		1168	CODE:
		1169	RETVAL = eio_nthreads ();
		1170	OUTPUT:
		1171	RETVAL
		1172
		1173	int
		1174	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1175	PROTOTYPE: $$$$
		1176	CODE:
		1177	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1178	RETVAL = posix_fadvise (fh, offset, length, advice);
		1179	#else
		1180	RETVAL = errno = ENOSYS;
		1181	#endif
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	ssize_t
		1186	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1190	OUTPUT:
		1191	RETVAL
		1192
		1193	void _on_next_submit (SV *cb)
		1194	CODE:
		1195	SvREFCNT_dec (on_next_submit);
		1196	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1197
1439	PROTOTYPES: DISABLE	1198	PROTOTYPES: DISABLE
1440		1199
1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1200	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442		1201
1443	void	1202	void
1444	cancel (aio_req_ornot req)	1203	cancel (aio_req_ornot req)
1445	CODE:	1204	CODE:
1446	req_cancel (req);	1205	eio_cancel (req);
1447		1206
1448	void	1207	void
1449	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1208	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1450	CODE:	1209	PPCODE:
		1210	{
		1211	if (GIMME_V != G_VOID)
		1212	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1213
		1214	if (items > 1)
		1215	{
		1216	SV *cb_cv =get_cb (callback);
		1217
1451	SvREFCNT_dec (req->callback);	1218	SvREFCNT_dec (req->callback);
1452	req->callback = newSVsv (callback);	1219	req->callback = SvREFCNT_inc (cb_cv);
		1220	}
		1221	}
1453		1222
1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1223	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1455		1224
1456	void	1225	void
1457	add (aio_req grp, ...)	1226	add (aio_req grp, ...)
1458	PPCODE:	1227	PPCODE:
1459	{	1228	{
1460	int i;	1229	int i;
1461	aio_req req;
1462		1230
1463	if (grp->fd == 2)	1231	if (grp->int1 == 2)
1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1232	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1465		1233
1466	for (i = 1; i < items; ++i )	1234	for (i = 1; i < items; ++i )
1467	{	1235	{
		1236	aio_req req;
		1237
1468	if (GIMME_V != G_VOID)	1238	if (GIMME_V != G_VOID)
1469	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1470		1240
1471	req = SvAIO_REQ (ST (i));	1241	req = SvAIO_REQ (ST (i));
1472		1242
1473	if (req)	1243	if (req)
1474	{	1244	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	}	1245	}
1487	}	1246	}
1488		1247
1489	void	1248	void
1490	cancel_subs (aio_req_ornot req)	1249	cancel_subs (aio_req_ornot req)
…		…
1494	void	1253	void
1495	result (aio_req grp, ...)	1254	result (aio_req grp, ...)
1496	CODE:	1255	CODE:
1497	{	1256	{
1498	int i;	1257	int i;
		1258	AV *av;
		1259
		1260	grp->errorno = errno;
		1261
1499	AV *av = newAV ();	1262	av = newAV ();
		1263	av_extend (av, items - 1);
1500		1264
1501	for (i = 1; i < items; ++i )	1265	for (i = 1; i < items; ++i )
1502	av_push (av, newSVsv (ST (i)));	1266	av_push (av, newSVsv (ST (i)));
1503		1267
1504	SvREFCNT_dec (grp->data);	1268	SvREFCNT_dec (grp->sv1);
1505	grp->data = (SV *)av;	1269	grp->sv1 = (SV *)av;
1506	}	1270	}
		1271
		1272	void
		1273	errno (aio_req grp, int errorno = errno)
		1274	CODE:
		1275	grp->errorno = errorno;
1507		1276
1508	void	1277	void
1509	limit (aio_req grp, int limit)	1278	limit (aio_req grp, int limit)
1510	CODE:	1279	CODE:
1511	grp->fd2 = limit;	1280	eio_grp_limit (grp, limit);
1512	aio_grp_feed (grp);
1513		1281
1514	void	1282	void
1515	feed (aio_req grp, SV *callback=&PL_sv_undef)	1283	feed (aio_req grp, SV *callback=&PL_sv_undef)
1516	CODE:	1284	CODE:
1517	{	1285	{
1518	SvREFCNT_dec (grp->fh2);	1286	SvREFCNT_dec (grp->sv2);
1519	grp->fh2 = newSVsv (callback);	1287	grp->sv2 = newSVsv (callback);
		1288	grp->feed = aio_grp_feed;
1520		1289
1521	if (grp->fd2 <= 0)	1290	if (grp->int2 <= 0)
1522	grp->fd2 = 2;	1291	grp->int2 = 2;
1523		1292
1524	aio_grp_feed (grp);	1293	eio_grp_limit (grp, grp->int2);
1525	}	1294	}
1526		1295

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