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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.83 by root, Sat Oct 28 00:17:30 2006 UTC vs.
Revision 1.155 by root, Fri Jul 17 00:56:54 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	/* perl namespace pollution */
34	# if __linux	21	#undef VERSION
35	# include <sys/sendfile.h>	22
36	# elif __freebsd	23	#ifdef _WIN32
37	# include <sys/socket.h>	24
38	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	26	# undef malloc
40	# include <sys/socket.h>	27	# undef free
41	# elif __solaris /* not yet */	28
42	# 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
43	# else	61	#else
44	# error sendfile support requested but not available	62
45	# 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
46	#endif	70	#endif
47		71
48	/* used for struct dirent, AIX doesn't provide it */	72	/* perl stupidly overrides readdir and maybe others */
49	#ifndef NAME_MAX	73	/* with thread-unsafe versions, imagine that :( */
50	# 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
51	#endif	89	#endif
52		90
53	#ifndef PTHREAD_STACK_MIN	91	/*****************************************************************************/
54	/* care for broken platforms, e.g. windows */	92
55	# define PTHREAD_STACK_MIN 16384	93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
56	#endif	97	#endif
57		98
58	#if __ia64	99	#define expect_false(expr) expect ((expr) != 0, 0)
59	# define STACKSIZE 65536	100	#define expect_true(expr) expect ((expr) != 0, 1)
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65		101
66	/* wether word reads are potentially non-atomic.	102	/*****************************************************************************/
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif
77		103
78	/* buffer size for various temporary buffers */	104	static HV *stash;
79	#define AIO_BUFSIZE 65536	105	typedef SV SV8; /* byte-sv, used for argument-checking */
80		106	typedef int aio_rfd; /* read file desriptor */
81	#define dBUF \	107	typedef int aio_wfd; /* write file descriptor */
82	char *aio_buf; \
83	LOCK (wrklock); \
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \
86	if (!aio_buf) \
87	return -1;
88
89	enum {
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		108
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		111
106	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;	113	SV *callback; \
111	SV *fh, *fh2;	114	SV *sv1, *sv2; \
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;	115	STRLEN stroffset; \
119	int type;	116	SV *self;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123		117
124	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
125	unsigned char pri;
126		119
127	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
129	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
130		151
131	enum {	152	enum {
132	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
133	};	154	};
134		155
		156	#include "libeio/eio.c"
		157
135	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
137		160
138	enum {	161	static SV *on_next_submit;
139	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	163	static int max_outstanding;
141		164
142	DEFAULT_PRI = 0,	165	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		166
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	167	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	168	static void req_cancel (aio_req req);
		169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	s_epipe_signal (&respipe);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	s_epipe_drain (&respipe);
		180	}
297		181
298	/* must be called at most once */	182	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
300	{	184	{
301	if (!req->self)	185	if (!req->self)
…		…
319	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	204	}
321		205
322	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
323	{	207	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
325	{	209	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	210	dSP;
331		211
332	ENTER;	212	ENTER;
333	SAVETMPS;	213	SAVETMPS;
334	PUSHMARK (SP);	214	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
336	PUTBACK;	216	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	218	SPAGAIN;
339	FREETMPS;	219	FREETMPS;
340	LEAVE;	220	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	221	}
351	}	222	}
352		223
353	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
354	{	225	{
355	--grp->length;	226	eio_submit (req);
356		227
357	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	229	{
363	req_invoke (grp);	230	dSP;
364	req_free (grp);	231	SV *cb = sv_2mortal (on_next_submit);
		232
		233	on_next_submit = 0;
		234
		235	PUSHMARK (SP);
		236	PUTBACK;
		237	call_sv (cb, G_DISCARD | G_EVAL);
365	}	238	}
366	}	239	}
367		240
368	static void req_invoke (aio_req req)	241	static int req_invoke (eio_req *req)
369	{	242	{
370	dSP;	243	dSP;
371		244
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	245	if (req->flags & FLAG_SV2_RO_OFF)
		246	SvREADONLY_off (req->sv2);
		247
		248	if (!EIO_CANCELLED (req) && req->callback)
373	{	249	{
374	ENTER;	250	ENTER;
375	SAVETMPS;	251	SAVETMPS;
376	PUSHMARK (SP);	252	PUSHMARK (SP);
377	EXTEND (SP, 1);	253	EXTEND (SP, 1);
378		254
379	switch (req->type)	255	switch (req->type)
380	{	256	{
381	case REQ_READDIR:	257	case EIO_READDIR:
382	{	258	{
383	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
384		260
385	if (req->result >= 0)	261	if (req->result >= 0)
386	{	262	{
387	int i;	263	int i;
388	char *buf = req->data2ptr;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	266	AV *av = newAV ();
390		267
391	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
392		269
393	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
394	{	271	{
395	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		275
		276	if (req->int1 & EIO_READDIR_CUSTOM2)
		277	{
		278	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		279	AV *avent = newAV ();
		280
		281	av_extend (avent, 2);
		282
		283	if (!sv_type [ent->type])
		284	{
		285	sv_type [ent->type] = newSViv (ent->type);
		286	SvREADONLY_on (sv_type [ent->type]);
		287	}
		288
		289	av_store (avent, 0, namesv);
		290	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		291	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		292
		293	av_store (av, i, newRV_noinc ((SV *)avent));
		294	}
		295	else
397	av_store (av, i, sv);	296	av_store (av, i, namesv);
		297
		298	++ent;
		299	}
		300	else
		301	{
		302	SV *name = newSVpv (names, 0);
		303	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
399	}	306	}
400		307
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	309	}
403		310
404	PUSHs (rv);	311	PUSHs (rv);
		312
		313	if (req->int1 & EIO_READDIR_CUSTOM1)
		314	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405	}	315	}
406	break;	316	break;
407		317
408	case REQ_OPEN:	318	case EIO_OPEN:
409	{	319	{
410	/* convert fd to fh */	320	/* convert fd to fh */
411	SV *fh;	321	SV *fh = &PL_sv_undef;
412		322
413	PUSHs (sv_2mortal (newSViv (req->result)));	323	if (req->result >= 0)
414	PUTBACK;	324	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	325	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	326	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		327	char sym [64];
		328	int symlen;
		329
		330	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		331	gv_init (gv, stash, sym, symlen, 0);
417		332
418	fh = SvREFCNT_inc (POPs);	333	symlen = snprintf (
		334	sym,
		335	sizeof (sym),
		336	"%s&=%d",
		337	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		338	(int)req->result
		339	);
419		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
420	PUSHMARK (SP);	345	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	346	}
423	break;	347	break;
424		348
425	case REQ_GROUP:	349	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
427		351
428	if (req->data)	352	if (req->sv1)
429	{	353	{
430	int i;	354	int i;
431	AV *av = (AV *)req->data;	355	AV *av = (AV *)req->sv1;
432		356
433	EXTEND (SP, AvFILL (av) + 1);	357	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
436	}	360	}
437	break;	361	break;
438		362
439	case REQ_NOP:	363	case EIO_NOP:
440	case REQ_BUSY:	364	case EIO_BUSY:
441	break;	365	break;
		366
		367	case EIO_READLINK:
		368	if (req->result > 0)
		369	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		370	break;
		371
		372	case EIO_STAT:
		373	case EIO_LSTAT:
		374	case EIO_FSTAT:
		375	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		376	PL_laststatval = req->result;
		377	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		378	PUSHs (sv_2mortal (newSViv (req->result)));
		379	break;
		380
		381	case EIO_READ:
		382	{
		383	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		384	*SvEND (req->sv2) = 0;
		385	SvPOK_only (req->sv2);
		386	SvSETMAGIC (req->sv2);
		387	PUSHs (sv_2mortal (newSViv (req->result)));
		388	}
		389	break;
		390
		391	case EIO_DUP2:
		392	if (req->result > 0)
		393	req->result = 0;
		394	/* FALLTHROUGH */
442		395
443	default:	396	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
445	break;	398	break;
446	}	399	}
447		400
448	errno = req->errorno;	401	errno = req->errorno;
449		402
450	PUTBACK;	403	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	405	SPAGAIN;
453		406
454	FREETMPS;	407	FREETMPS;
455	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
456	}	411	}
457		412
458	if (req->grp)	413	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	414	}
478		415
479	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
480	{	417	{
481	if (req->self)	418	if (req->self)
482	{	419	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
485	}	422	}
486		423
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		427
496	Safefree (req);	428	Safefree (req);
497	}	429	}
498		430
499	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
500	{	432	{
501	aio_req sub;	433	aio_req sub;
502		434
503	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
504	return;	436	return;
505		437
506	SvREFCNT_dec (grp->fh2);	438	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	439	grp->sv2 = 0;
508		440
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	442	}
512		443
513	static void req_cancel (aio_req req)	444	static void
		445	create_respipe (void)
514	{	446	{
515	req->flags |= FLAG_CANCELLED;	447	if (s_epipe_renew (&respipe))
516		448	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	449	}
519		450
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif
538
539	sigfillset (&fullsigset);
540
541	LOCK (wrklock);
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545	{
546	wrk->prev = &wrk_first;
547	wrk->next = wrk_first.next;
548	wrk_first.next->prev = wrk;
549	wrk_first.next = wrk;
550	++started;
551	}
552	else
553	free (wrk);
554
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
556	UNLOCK (wrklock);
557	}
558
559	static void maybe_start_thread ()
560	{
561	#if 0
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif
565
566	if (started >= wanted)
567	return;
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}
592
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	LOCK (reqlock);
616	reqq_push (&req_queue, req);
617	pthread_cond_signal (&reqwait);
618	UNLOCK (reqlock);
619
620	LOCK (wrklock);
621	--started;
622	UNLOCK (wrklock);
623	}
624
625	static void min_parallel (int nthreads)
626	{
627	if (wanted < nthreads)
628	wanted = nthreads;
629	}
630
631	static void max_parallel (int nthreads)
632	{
633	if (wanted > nthreads)
634	wanted = nthreads;
635
636	while (started > wanted)
637	end_thread ();
638	}
639
640	static void poll_wait ()	451	static void poll_wait (void)
641	{	452	{
642	fd_set rfd;
643
644	while (nreqs)	453	while (eio_nreqs ())
645	{	454	{
646	int size;	455	int size;
647	if (WORDREAD_UNSAFE) LOCK (reslock);	456
		457	X_LOCK (reslock);
648	size = res_queue.size;	458	size = res_queue.size;
649	if (WORDREAD_UNSAFE) UNLOCK (reslock);	459	X_UNLOCK (reslock);
650		460
651	if (size)	461	if (size)
652	return;	462	return;
653		463
654	maybe_start_thread ();	464	etp_maybe_start_thread ();
655		465
656	FD_ZERO(&rfd);	466	s_epipe_wait (&respipe);
657	FD_SET(respipe [0], &rfd);
658
659	select (respipe [0] + 1, &rfd, 0, 0, 0);
660	}	467	}
661	}	468	}
662		469
663	static int poll_cb (int max)	470	static int poll_cb (void)
664	{	471	{
665	dSP;
666	int count = 0;
667	int do_croak = 0;
668	aio_req req;
669
670	for (;;)	472	for (;;)
671	{	473	{
672	while (max <= 0 || count < max)	474	int res = eio_poll ();
673	{
674	maybe_start_thread ();
675		475
676	LOCK (reslock);	476	if (res > 0)
677	req = reqq_shift (&res_queue);
678
679	if (req)
680	{
681	--npending;
682
683	if (!res_queue.size)
684	{
685	/* read any signals sent by the worker threads */
686	char buf [32];
687	while (read (respipe [0], buf, 32) == 32)
688	;
689	}
690	}
691
692	UNLOCK (reslock);
693
694	if (!req)
695	break;
696
697	--nreqs;
698
699	if (req->type == REQ_GROUP && req->length)
700	{
701	req->fd = 1; /* mark request as delayed */
702	continue;
703	}
704	else
705	{
706	if (req->type == REQ_READ)
707	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
708
709	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
710	SvREADONLY_off (req->data);
711
712	if (req->statdata)
713	{
714	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
715	PL_laststatval = req->result;
716	PL_statcache = *(req->statdata);
717	}
718
719	req_invoke (req);
720
721	count++;
722	}
723
724	req_free (req);
725	}
726
727	if (nreqs <= max_outstanding)
728	break;	477	croak (0);
		478
		479	if (!max_outstanding || max_outstanding > eio_nreqs ())
		480	return res;
729		481
730	poll_wait ();	482	poll_wait ();
731
732	max = 0;
733	}	483	}
734
735	return count;
736	}
737
738	static void create_pipe ()
739	{
740	if (pipe (respipe))
741	croak ("unable to initialize result pipe");
742
743	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745
746	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
747	croak ("cannot set result pipe to nonblocking mode");
748	}
749
750	/*****************************************************************************/
751	/* work around various missing functions */
752
753	#if !HAVE_PREADWRITE
754	# define pread aio_pread
755	# define pwrite aio_pwrite
756
757	/*
758	* make our pread/pwrite safe against themselves, but not against
759	* normal read/write by using a mutex. slows down execution a lot,
760	* but that's your problem, not mine.
761	*/
762	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
763
764	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
765	{
766	ssize_t res;
767	off_t ooffset;
768
769	LOCK (preadwritelock);
770	ooffset = lseek (fd, 0, SEEK_CUR);
771	lseek (fd, offset, SEEK_SET);
772	res = read (fd, buf, count);
773	lseek (fd, ooffset, SEEK_SET);
774	UNLOCK (preadwritelock);
775
776	return res;
777	}
778
779	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
780	{
781	ssize_t res;
782	off_t ooffset;
783
784	LOCK (preadwritelock);
785	ooffset = lseek (fd, 0, SEEK_CUR);
786	lseek (fd, offset, SEEK_SET);
787	res = write (fd, buf, count);
788	lseek (fd, offset, SEEK_SET);
789	UNLOCK (preadwritelock);
790
791	return res;
792	}
793	#endif
794
795	#if !HAVE_FDATASYNC
796	# define fdatasync fsync
797	#endif
798
799	#if !HAVE_READAHEAD
800	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
801
802	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
803	{
804	dBUF;
805
806	while (count > 0)
807	{
808	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
809
810	pread (fd, aio_buf, len, offset);
811	offset += len;
812	count -= len;
813	}
814
815	errno = 0;
816	}
817
818	#endif
819
820	#if !HAVE_READDIR_R
821	# define readdir_r aio_readdir_r
822
823	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
824
825	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
826	{
827	struct dirent *e;
828	int errorno;
829
830	LOCK (readdirlock);
831
832	e = readdir (dirp);
833	errorno = errno;
834
835	if (e)
836	{
837	*res = ent;
838	strcpy (ent->d_name, e->d_name);
839	}
840	else
841	*res = 0;
842
843	UNLOCK (readdirlock);
844
845	errno = errorno;
846	return e ? 0 : -1;
847	}
848	#endif
849
850	/* sendfile always needs emulation */
851	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
852	{
853	ssize_t res;
854
855	if (!count)
856	return 0;
857
858	#if HAVE_SENDFILE
859	# if __linux
860	res = sendfile (ofd, ifd, &offset, count);
861
862	# elif __freebsd
863	/*
864	* Of course, the freebsd sendfile is a dire hack with no thoughts
865	* wasted on making it similar to other I/O functions.
866	*/
867	{
868	off_t sbytes;
869	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
870
871	if (res < 0 && sbytes)
872	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
873	res = sbytes;
874	}
875
876	# elif __hpux
877	res = sendfile (ofd, ifd, offset, count, 0, 0);
878
879	# elif __solaris
880	{
881	struct sendfilevec vec;
882	size_t sbytes;
883
884	vec.sfv_fd = ifd;
885	vec.sfv_flag = 0;
886	vec.sfv_off = offset;
887	vec.sfv_len = count;
888
889	res = sendfilev (ofd, &vec, 1, &sbytes);
890
891	if (res < 0 && sbytes)
892	res = sbytes;
893	}
894
895	# endif
896	#else
897	res = -1;
898	errno = ENOSYS;
899	#endif
900
901	if (res < 0
902	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
903	#if __solaris
904	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
905	#endif
906	)
907	)
908	{
909	/* emulate sendfile. this is a major pain in the ass */
910	dBUF;
911
912	res = 0;
913
914	while (count)
915	{
916	ssize_t cnt;
917
918	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
919
920	if (cnt <= 0)
921	{
922	if (cnt && !res) res = -1;
923	break;
924	}
925
926	cnt = write (ofd, aio_buf, cnt);
927
928	if (cnt <= 0)
929	{
930	if (cnt && !res) res = -1;
931	break;
932	}
933
934	offset += cnt;
935	res += cnt;
936	count -= cnt;
937	}
938	}
939
940	return res;
941	}
942
943	/* read a full directory */
944	static void scandir_ (aio_req req, worker *self)
945	{
946	DIR *dirp;
947	union
948	{
949	struct dirent d;
950	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
951	} *u;
952	struct dirent *entp;
953	char *name, *names;
954	int memlen = 4096;
955	int memofs = 0;
956	int res = 0;
957	int errorno;
958
959	LOCK (wrklock);
960	self->dirp = dirp = opendir (req->dataptr);
961	self->dbuf = u = malloc (sizeof (*u));
962	req->data2ptr = names = malloc (memlen);
963	UNLOCK (wrklock);
964
965	if (dirp && u && names)
966	for (;;)
967	{
968	errno = 0;
969	readdir_r (dirp, &u->d, &entp);
970
971	if (!entp)
972	break;
973
974	name = entp->d_name;
975
976	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
977	{
978	int len = strlen (name) + 1;
979
980	res++;
981
982	while (memofs + len > memlen)
983	{
984	memlen *= 2;
985	LOCK (wrklock);
986	req->data2ptr = names = realloc (names, memlen);
987	UNLOCK (wrklock);
988
989	if (!names)
990	break;
991	}
992
993	memcpy (names + memofs, name, len);
994	memofs += len;
995	}
996	}
997
998	if (errno)
999	res = -1;
1000
1001	req->result = res;
1002	}
1003
1004	/*****************************************************************************/
1005
1006	static void *aio_proc (void *thr_arg)
1007	{
1008	aio_req req;
1009	worker *self = (worker *)thr_arg;
1010
1011	for (;;)
1012	{
1013	LOCK (reqlock);
1014
1015	for (;;)
1016	{
1017	self->req = req = reqq_shift (&req_queue);
1018
1019	if (req)
1020	break;
1021
1022	pthread_cond_wait (&reqwait, &reqlock);
1023	}
1024
1025	--nready;
1026
1027	UNLOCK (reqlock);
1028
1029	errno = 0; /* strictly unnecessary */
1030
1031	if (!(req->flags & FLAG_CANCELLED))
1032	switch (req->type)
1033	{
1034	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1035	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1036
1037	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1038	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1039
1040	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1041	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1042	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1043
1044	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1045	case REQ_CLOSE: req->result = close (req->fd); break;
1046	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1047	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1048	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1049	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1050	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1051	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1052
1053	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1054	case REQ_FSYNC: req->result = fsync (req->fd); break;
1055	case REQ_READDIR: scandir_ (req, self); break;
1056
1057	case REQ_BUSY:
1058	{
1059	struct timeval tv;
1060
1061	tv.tv_sec = req->fd;
1062	tv.tv_usec = req->fd2;
1063
1064	req->result = select (0, 0, 0, 0, &tv);
1065	}
1066
1067	case REQ_GROUP:
1068	case REQ_NOP:
1069	break;
1070
1071	case REQ_QUIT:
1072	LOCK (wrklock);
1073	worker_free (self);
1074	--started;
1075	UNLOCK (wrklock);
1076	return 0;
1077
1078	default:
1079	req->result = ENOSYS;
1080	break;
1081	}
1082
1083	req->errorno = errno;
1084
1085	LOCK (reslock);
1086
1087	++npending;
1088
1089	if (!reqq_push (&res_queue, req))
1090	/* write a dummy byte to the pipe so fh becomes ready */
1091	write (respipe [1], &respipe, 1);
1092
1093	self->req = 0;
1094	worker_clear (self);
1095
1096	UNLOCK (reslock);
1097	}
1098	}
1099
1100	/*****************************************************************************/
1101
1102	static void atfork_prepare (void)
1103	{
1104	LOCK (wrklock);
1105	LOCK (reqlock);
1106	LOCK (reslock);
1107	#if !HAVE_PREADWRITE
1108	LOCK (preadwritelock);
1109	#endif
1110	#if !HAVE_READDIR_R
1111	LOCK (readdirlock);
1112	#endif
1113	}
1114
1115	static void atfork_parent (void)
1116	{
1117	#if !HAVE_READDIR_R
1118	UNLOCK (readdirlock);
1119	#endif
1120	#if !HAVE_PREADWRITE
1121	UNLOCK (preadwritelock);
1122	#endif
1123	UNLOCK (reslock);
1124	UNLOCK (reqlock);
1125	UNLOCK (wrklock);
1126	}	484	}
1127		485
1128	static void atfork_child (void)	486	static void atfork_child (void)
1129	{	487	{
1130	aio_req prv;
1131
1132	while (prv = reqq_shift (&req_queue))
1133	req_free (prv);
1134
1135	while (prv = reqq_shift (&res_queue))
1136	req_free (prv);
1137
1138	while (wrk_first.next != &wrk_first)
1139	{
1140	worker *wrk = wrk_first.next;
1141
1142	if (wrk->req)
1143	req_free (wrk->req);
1144
1145	worker_clear (wrk);
1146	worker_free (wrk);
1147	}
1148
1149	started = 0;
1150	nreqs = 0;
1151
1152	close (respipe [0]);
1153	close (respipe [1]);
1154	create_pipe ();	488	create_respipe ();
		489	}
1155		490
1156	atfork_parent ();	491	static SV *
		492	get_cb (SV *cb_sv)
		493	{
		494	SvGETMAGIC (cb_sv);
		495	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1157	}	496	}
1158		497
1159	#define dREQ \	498	#define dREQ \
		499	SV *cb_cv; \
1160	aio_req req; \	500	aio_req req; \
1161	int req_pri = next_pri; \	501	int req_pri = next_pri; \
1162	next_pri = DEFAULT_PRI + PRI_BIAS; \	502	next_pri = EIO_PRI_DEFAULT; \
1163	\	503	\
1164	if (SvOK (callback) && !SvROK (callback)) \	504	cb_cv = get_cb (callback); \
1165	croak ("callback must be undef or of reference type"); \
1166	\	505	\
1167	Newz (0, req, 1, aio_cb); \	506	Newz (0, req, 1, eio_req); \
1168	if (!req) \	507	if (!req) \
1169	croak ("out of memory during aio_req allocation"); \	508	croak ("out of memory during eio_req allocation"); \
1170	\	509	\
1171	req->callback = newSVsv (callback); \	510	req->callback = SvREFCNT_inc (cb_cv); \
1172	req->pri = req_pri	511	req->pri = req_pri
1173		512
1174	#define REQ_SEND \	513	#define REQ_SEND \
		514	PUTBACK; \
1175	req_send (req); \	515	req_submit (req); \
		516	SPAGAIN; \
1176	\	517	\
1177	if (GIMME_V != G_VOID) \	518	if (GIMME_V != G_VOID) \
1178	XPUSHs (req_sv (req, AIO_REQ_KLASS));	519	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1179		520
1180	MODULE = IO::AIO PACKAGE = IO::AIO	521	MODULE = IO::AIO PACKAGE = IO::AIO
1181		522
1182	PROTOTYPES: ENABLE	523	PROTOTYPES: ENABLE
1183		524
1184	BOOT:	525	BOOT:
1185	{	526	{
		527	static const struct {
		528	const char *name;
		529	IV iv;
		530	} *civ, const_iv[] = {
		531	# define const_iv(name, value) { # name, (IV) value },
		532	# define const_eio(name) { # name, (IV) EIO_ ## name },
		533	const_iv (EXDEV , EXDEV)
		534	const_iv (ENOSYS , ENOSYS)
		535	const_iv (O_RDONLY, O_RDONLY)
		536	const_iv (O_WRONLY, O_WRONLY)
		537	const_iv (O_CREAT , O_CREAT)
		538	const_iv (O_TRUNC , O_TRUNC)
		539	#ifndef _WIN32
		540	const_iv (S_IFIFO , S_IFIFO)
		541	#endif
		542	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		543	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		544	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		545	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		546	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		547	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		548
		549	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		550	const_eio (SYNC_FILE_RANGE_WRITE)
		551	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		552
		553	const_eio (READDIR_DENTS)
		554	const_eio (READDIR_DIRS_FIRST)
		555	const_eio (READDIR_STAT_ORDER)
		556	const_eio (READDIR_FOUND_UNKNOWN)
		557
		558	const_eio (DT_UNKNOWN)
		559	const_eio (DT_FIFO)
		560	const_eio (DT_CHR)
		561	const_eio (DT_DIR)
		562	const_eio (DT_BLK)
		563	const_eio (DT_REG)
		564	const_eio (DT_LNK)
		565	const_eio (DT_SOCK)
		566	const_eio (DT_WHT)
		567	};
		568
1186	HV *stash = gv_stashpv ("IO::AIO", 1);	569	stash = gv_stashpv ("IO::AIO", 1);
1187		570
1188	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	571	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1189	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	572	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1190	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1191	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1192	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1193	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1194		573
1195	create_pipe ();	574	create_respipe ();
1196	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1197		575
1198	start_thread ();	576	if (eio_init (want_poll, done_poll) < 0)
		577	croak ("IO::AIO: unable to initialise eio library");
		578
		579	/* atfork child called in fifo order, so before eio's handler */
		580	X_THREAD_ATFORK (0, 0, atfork_child);
1199	}	581	}
		582
		583	void
		584	max_poll_reqs (int nreqs)
		585	PROTOTYPE: $
		586	CODE:
		587	eio_set_max_poll_reqs (nreqs);
		588
		589	void
		590	max_poll_time (double nseconds)
		591	PROTOTYPE: $
		592	CODE:
		593	eio_set_max_poll_time (nseconds);
1200		594
1201	void	595	void
1202	min_parallel (int nthreads)	596	min_parallel (int nthreads)
1203	PROTOTYPE: $	597	PROTOTYPE: $
		598	CODE:
		599	eio_set_min_parallel (nthreads);
1204		600
1205	void	601	void
1206	max_parallel (int nthreads)	602	max_parallel (int nthreads)
1207	PROTOTYPE: $	603	PROTOTYPE: $
		604	CODE:
		605	eio_set_max_parallel (nthreads);
1208		606
1209	int	607	void
		608	max_idle (int nthreads)
		609	PROTOTYPE: $
		610	CODE:
		611	eio_set_max_idle (nthreads);
		612
		613	void
1210	max_outstanding (int maxreqs)	614	max_outstanding (int maxreqs)
1211	PROTOTYPE: $	615	PROTOTYPE: $
1212	CODE:	616	CODE:
1213	RETVAL = max_outstanding;
1214	max_outstanding = maxreqs;	617	max_outstanding = maxreqs;
1215	OUTPUT:
1216	RETVAL
1217		618
1218	void	619	void
1219	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	620	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1220	SV * pathname
1221	int flags
1222	int mode
1223	SV * callback
1224	PROTOTYPE: $$$;$	621	PROTOTYPE: $$$;$
1225	PPCODE:	622	PPCODE:
1226	{	623	{
1227	dREQ;	624	dREQ;
1228		625
1229	req->type = REQ_OPEN;	626	req->type = EIO_OPEN;
1230	req->data = newSVsv (pathname);	627	req->sv1 = newSVsv (pathname);
1231	req->dataptr = SvPVbyte_nolen (req->data);	628	req->ptr1 = SvPVbyte_nolen (req->sv1);
1232	req->fd = flags;	629	req->int1 = flags;
1233	req->mode = mode;	630	req->int2 = mode;
1234		631
1235	REQ_SEND;	632	REQ_SEND;
1236	}	633	}
1237		634
1238	void	635	void
1239	aio_close (fh,callback=&PL_sv_undef)	636	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1240	SV * fh
1241	SV * callback
1242	PROTOTYPE: $;$	637	PROTOTYPE: $;$
1243	ALIAS:	638	ALIAS:
1244	aio_close = REQ_CLOSE
1245	aio_fsync = REQ_FSYNC	639	aio_fsync = EIO_FSYNC
1246	aio_fdatasync = REQ_FDATASYNC	640	aio_fdatasync = EIO_FDATASYNC
1247	PPCODE:	641	PPCODE:
1248	{	642	{
		643	int fd = s_fileno_croak (fh, 0);
1249	dREQ;	644	dREQ;
1250		645
1251	req->type = ix;	646	req->type = ix;
1252	req->fh = newSVsv (fh);	647	req->sv1 = newSVsv (fh);
1253	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	648	req->int1 = fd;
1254		649
1255	REQ_SEND (req);	650	REQ_SEND (req);
1256	}	651	}
1257		652
1258	void	653	void
		654	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		655	PROTOTYPE: $$$$;$
		656	PPCODE:
		657	{
		658	int fd = s_fileno_croak (fh, 0);
		659	dREQ;
		660
		661	req->type = EIO_SYNC_FILE_RANGE;
		662	req->sv1 = newSVsv (fh);
		663	req->int1 = fd;
		664	req->offs = offset;
		665	req->size = nbytes;
		666	req->int2 = flags;
		667
		668	REQ_SEND (req);
		669	}
		670
		671	void
		672	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		673	PROTOTYPE: $;$
		674	PPCODE:
		675	{
		676	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		677	int fd = s_fileno_croak (fh, 0);
		678	dREQ;
		679
		680	if (close_pipe < 0)
		681	{
		682	int pipefd [2];
		683
		684	if (pipe (pipefd) < 0
		685	|| close (pipefd [1]) < 0
		686	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		687	abort (); /*D*/
		688
		689	close_pipe = pipefd [0];
		690	}
		691
		692	req->type = EIO_DUP2;
		693	req->int1 = close_pipe;
		694	req->sv2 = newSVsv (fh);
		695	req->int2 = fd;
		696
		697	REQ_SEND (req);
		698	}
		699
		700	void
1259	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	701	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1260	SV * fh
1261	UV offset
1262	UV length
1263	SV * data
1264	UV dataoffset
1265	SV * callback
1266	ALIAS:	702	ALIAS:
1267	aio_read = REQ_READ	703	aio_read = EIO_READ
1268	aio_write = REQ_WRITE	704	aio_write = EIO_WRITE
1269	PROTOTYPE: $$$$$;$	705	PROTOTYPE: $$$$$;$
1270	PPCODE:	706	PPCODE:
1271	{	707	{
1272	aio_req req;
1273	STRLEN svlen;	708	STRLEN svlen;
		709	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1274	char *svptr = SvPVbyte (data, svlen);	710	char *svptr = SvPVbyte (data, svlen);
1275		711	UV len = SvUV (length);
1276	SvUPGRADE (data, SVt_PV);
1277	SvPOK_on (data);
1278		712
1279	if (dataoffset < 0)	713	if (dataoffset < 0)
1280	dataoffset += svlen;	714	dataoffset += svlen;
1281		715
1282	if (dataoffset < 0 || dataoffset > svlen)	716	if (dataoffset < 0 || dataoffset > svlen)
1283	croak ("data offset outside of string");	717	croak ("dataoffset outside of data scalar");
1284		718
1285	if (ix == REQ_WRITE)	719	if (ix == EIO_WRITE)
1286	{	720	{
1287	/* write: check length and adjust. */	721	/* write: check length and adjust. */
1288	if (length < 0 || length + dataoffset > svlen)	722	if (!SvOK (length) || len + dataoffset > svlen)
1289	length = svlen - dataoffset;	723	len = svlen - dataoffset;
1290	}	724	}
1291	else	725	else
1292	{	726	{
1293	/* read: grow scalar as necessary */	727	/* read: check type and grow scalar as necessary */
		728	SvUPGRADE (data, SVt_PV);
1294	svptr = SvGROW (data, length + dataoffset);	729	svptr = SvGROW (data, len + dataoffset + 1);
1295	}	730	}
1296
1297	if (length < 0)
1298	croak ("length must not be negative");
1299		731
1300	{	732	{
1301	dREQ;	733	dREQ;
1302		734
1303	req->type = ix;	735	req->type = ix;
1304	req->fh = newSVsv (fh);	736	req->sv1 = newSVsv (fh);
1305	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	737	req->int1 = fd;
1306	: IoOFP (sv_2io (fh)));	738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1307	req->offset = offset;	739	req->size = len;
1308	req->length = length;
1309	req->data = SvREFCNT_inc (data);	740	req->sv2 = SvREFCNT_inc (data);
1310	req->dataptr = (char *)svptr + dataoffset;	741	req->ptr2 = (char *)svptr + dataoffset;
		742	req->stroffset = dataoffset;
1311		743
1312	if (!SvREADONLY (data))	744	if (!SvREADONLY (data))
1313	{	745	{
1314	SvREADONLY_on (data);	746	SvREADONLY_on (data);
1315	req->data2ptr = (void *)data;	747	req->flags |= FLAG_SV2_RO_OFF;
1316	}	748	}
1317		749
1318	REQ_SEND;	750	REQ_SEND;
1319	}	751	}
1320	}	752	}
1321		753
1322	void	754	void
		755	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		756	PROTOTYPE: $$;$
		757	PPCODE:
		758	{
		759	SV *data;
		760	dREQ;
		761
		762	req->type = EIO_READLINK;
		763	req->sv1 = newSVsv (path);
		764	req->ptr1 = SvPVbyte_nolen (req->sv1);
		765
		766	REQ_SEND;
		767	}
		768
		769	void
1323	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	770	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1324	SV * out_fh
1325	SV * in_fh
1326	UV in_offset
1327	UV length
1328	SV * callback
1329	PROTOTYPE: $$$$;$	771	PROTOTYPE: $$$$;$
1330	PPCODE:	772	PPCODE:
1331	{	773	{
		774	int ifd = s_fileno_croak (in_fh , 0);
		775	int ofd = s_fileno_croak (out_fh, 1);
1332	dREQ;	776	dREQ;
1333		777
1334	req->type = REQ_SENDFILE;	778	req->type = EIO_SENDFILE;
1335	req->fh = newSVsv (out_fh);	779	req->sv1 = newSVsv (out_fh);
1336	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	780	req->int1 = ofd;
1337	req->fh2 = newSVsv (in_fh);	781	req->sv2 = newSVsv (in_fh);
1338	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	782	req->int2 = ifd;
1339	req->offset = in_offset;	783	req->offs = in_offset;
1340	req->length = length;	784	req->size = length;
1341		785
1342	REQ_SEND;	786	REQ_SEND;
1343	}	787	}
1344		788
1345	void	789	void
1346	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	790	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1347	SV * fh
1348	UV offset
1349	IV length
1350	SV * callback
1351	PROTOTYPE: $$$;$	791	PROTOTYPE: $$$;$
1352	PPCODE:	792	PPCODE:
1353	{	793	{
		794	int fd = s_fileno_croak (fh, 0);
1354	dREQ;	795	dREQ;
1355		796
1356	req->type = REQ_READAHEAD;	797	req->type = EIO_READAHEAD;
1357	req->fh = newSVsv (fh);	798	req->sv1 = newSVsv (fh);
1358	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	799	req->int1 = fd;
1359	req->offset = offset;	800	req->offs = offset;
1360	req->length = length;	801	req->size = length;
1361		802
1362	REQ_SEND;	803	REQ_SEND;
1363	}	804	}
1364		805
1365	void	806	void
1366	aio_stat (fh_or_path,callback=&PL_sv_undef)	807	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1367	SV * fh_or_path
1368	SV * callback
1369	ALIAS:	808	ALIAS:
1370	aio_stat = REQ_STAT	809	aio_stat = EIO_STAT
1371	aio_lstat = REQ_LSTAT	810	aio_lstat = EIO_LSTAT
1372	PPCODE:	811	PPCODE:
1373	{	812	{
1374	dREQ;	813	dREQ;
1375		814
1376	New (0, req->statdata, 1, Stat_t);	815	req->sv1 = newSVsv (fh_or_path);
1377	if (!req->statdata)
1378	{
1379	req_free (req);
1380	croak ("out of memory during aio_req->statdata allocation");
1381	}
1382		816
1383	if (SvPOK (fh_or_path))	817	if (SvPOK (req->sv1))
1384	{	818	{
1385	req->type = ix;	819	req->type = ix;
1386	req->data = newSVsv (fh_or_path);
1387	req->dataptr = SvPVbyte_nolen (req->data);	820	req->ptr1 = SvPVbyte_nolen (req->sv1);
1388	}	821	}
1389	else	822	else
1390	{	823	{
1391	req->type = REQ_FSTAT;	824	req->type = EIO_FSTAT;
1392	req->fh = newSVsv (fh_or_path);
1393	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	825	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1394	}	826	}
1395		827
1396	REQ_SEND;	828	REQ_SEND;
1397	}	829	}
1398		830
1399	void	831	void
		832	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		833	PPCODE:
		834	{
		835	dREQ;
		836
		837	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		838	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		839	req->sv1 = newSVsv (fh_or_path);
		840
		841	if (SvPOK (req->sv1))
		842	{
		843	req->type = EIO_UTIME;
		844	req->ptr1 = SvPVbyte_nolen (req->sv1);
		845	}
		846	else
		847	{
		848	req->type = EIO_FUTIME;
		849	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		850	}
		851
		852	REQ_SEND;
		853	}
		854
		855	void
		856	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		857	PPCODE:
		858	{
		859	dREQ;
		860
		861	req->sv1 = newSVsv (fh_or_path);
		862	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		863
		864	if (SvPOK (req->sv1))
		865	{
		866	req->type = EIO_TRUNCATE;
		867	req->ptr1 = SvPVbyte_nolen (req->sv1);
		868	}
		869	else
		870	{
		871	req->type = EIO_FTRUNCATE;
		872	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		873	}
		874
		875	REQ_SEND;
		876	}
		877
		878	void
		879	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		880	ALIAS:
		881	aio_chmod = EIO_CHMOD
		882	aio_mkdir = EIO_MKDIR
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->int2 = mode;
		888	req->sv1 = newSVsv (fh_or_path);
		889
		890	if (SvPOK (req->sv1))
		891	{
		892	req->type = ix;
		893	req->ptr1 = SvPVbyte_nolen (req->sv1);
		894	}
		895	else
		896	{
		897	req->type = EIO_FCHMOD;
		898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		899	}
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		906	PPCODE:
		907	{
		908	dREQ;
		909
		910	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		911	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		912	req->sv1 = newSVsv (fh_or_path);
		913
		914	if (SvPOK (req->sv1))
		915	{
		916	req->type = EIO_CHOWN;
		917	req->ptr1 = SvPVbyte_nolen (req->sv1);
		918	}
		919	else
		920	{
		921	req->type = EIO_FCHOWN;
		922	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		923	}
		924
		925	REQ_SEND;
		926	}
		927
		928	void
		929	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		930	PPCODE:
		931	{
		932	dREQ;
		933
		934	req->type = EIO_READDIR;
		935	req->sv1 = newSVsv (pathname);
		936	req->ptr1 = SvPVbyte_nolen (req->sv1);
		937	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		938
		939	if (flags & EIO_READDIR_DENTS)
		940	req->int1 |= EIO_READDIR_CUSTOM2;
		941
		942	REQ_SEND;
		943	}
		944
		945	void
1400	aio_unlink (pathname,callback=&PL_sv_undef)	946	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1401	SV * pathname
1402	SV * callback
1403	ALIAS:	947	ALIAS:
1404	aio_unlink = REQ_UNLINK	948	aio_unlink = EIO_UNLINK
1405	aio_rmdir = REQ_RMDIR	949	aio_rmdir = EIO_RMDIR
1406	aio_readdir = REQ_READDIR	950	aio_readdir = EIO_READDIR
1407	PPCODE:	951	PPCODE:
1408	{	952	{
1409	dREQ;	953	dREQ;
1410		954
1411	req->type = ix;	955	req->type = ix;
1412	req->data = newSVsv (pathname);	956	req->sv1 = newSVsv (pathname);
1413	req->dataptr = SvPVbyte_nolen (req->data);	957	req->ptr1 = SvPVbyte_nolen (req->sv1);
		958
		959	REQ_SEND;
		960	}
		961
		962	void
		963	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		964	ALIAS:
		965	aio_link = EIO_LINK
		966	aio_symlink = EIO_SYMLINK
		967	aio_rename = EIO_RENAME
		968	PPCODE:
		969	{
		970	dREQ;
		971
		972	req->type = ix;
		973	req->sv1 = newSVsv (oldpath);
		974	req->ptr1 = SvPVbyte_nolen (req->sv1);
		975	req->sv2 = newSVsv (newpath);
		976	req->ptr2 = SvPVbyte_nolen (req->sv2);
1414		977
1415	REQ_SEND;	978	REQ_SEND;
1416	}	979	}
1417		980
1418	void	981	void
1419	aio_link (oldpath,newpath,callback=&PL_sv_undef)	982	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1420	SV * oldpath
1421	SV * newpath
1422	SV * callback
1423	ALIAS:
1424	aio_link = REQ_LINK
1425	aio_symlink = REQ_SYMLINK
1426	aio_rename = REQ_RENAME
1427	PPCODE:	983	PPCODE:
1428	{	984	{
1429	dREQ;	985	dREQ;
1430		986
1431	req->type = ix;	987	req->type = EIO_MKNOD;
1432	req->fh = newSVsv (oldpath);	988	req->sv1 = newSVsv (pathname);
1433	req->data2ptr = SvPVbyte_nolen (req->fh);	989	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->data = newSVsv (newpath);	990	req->int2 = (mode_t)mode;
1435	req->dataptr = SvPVbyte_nolen (req->data);	991	req->offs = dev;
1436		992
1437	REQ_SEND;	993	REQ_SEND;
1438	}	994	}
1439		995
1440	void	996	void
1441	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	997	aio_busy (double delay, SV *callback=&PL_sv_undef)
1442	SV * pathname
1443	SV * callback
1444	UV mode
1445	UV dev
1446	PPCODE:	998	PPCODE:
1447	{	999	{
1448	dREQ;	1000	dREQ;
1449		1001
1450	req->type = REQ_MKNOD;	1002	req->type = EIO_BUSY;
1451	req->data = newSVsv (pathname);	1003	req->nv1 = delay < 0. ? 0. : delay;
1452	req->dataptr = SvPVbyte_nolen (req->data);	1004
1453	req->mode = (mode_t)mode;
1454	req->offset = dev;
1455
1456	REQ_SEND;	1005	REQ_SEND;
1457	}	1006	}
1458		1007
1459	void	1008	void
1460	aio_busy (delay,callback=&PL_sv_undef)
1461	double delay
1462	SV * callback
1463	PPCODE:
1464	{
1465	dREQ;
1466
1467	req->type = REQ_BUSY;
1468	req->fd = delay < 0. ? 0 : delay;
1469	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1470
1471	REQ_SEND;
1472	}
1473
1474	void
1475	aio_group (callback=&PL_sv_undef)	1009	aio_group (SV *callback=&PL_sv_undef)
1476	SV * callback
1477	PROTOTYPE: ;$	1010	PROTOTYPE: ;$
1478	PPCODE:	1011	PPCODE:
1479	{	1012	{
1480	dREQ;	1013	dREQ;
1481		1014
1482	req->type = REQ_GROUP;	1015	req->type = EIO_GROUP;
		1016
1483	req_send (req);	1017	req_submit (req);
1484
1485	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1018	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1486	}	1019	}
1487		1020
1488	void	1021	void
1489	aio_nop (callback=&PL_sv_undef)	1022	aio_nop (SV *callback=&PL_sv_undef)
1490	SV * callback	1023	ALIAS:
		1024	aio_nop = EIO_NOP
		1025	aio_sync = EIO_SYNC
1491	PPCODE:	1026	PPCODE:
1492	{	1027	{
1493	dREQ;	1028	dREQ;
1494		1029
1495	req->type = REQ_NOP;	1030	req->type = ix;
1496		1031
1497	REQ_SEND;	1032	REQ_SEND;
1498	}	1033	}
1499		1034
1500	int	1035	int
1501	aioreq_pri (int pri = 0)	1036	aioreq_pri (int pri = 0)
1502	PROTOTYPE: ;$	1037	PROTOTYPE: ;$
1503	CODE:	1038	CODE:
1504	RETVAL = next_pri - PRI_BIAS;	1039	RETVAL = next_pri;
1505	if (items > 0)	1040	if (items > 0)
1506	{	1041	{
1507	if (pri < PRI_MIN) pri = PRI_MIN;	1042	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1508	if (pri > PRI_MAX) pri = PRI_MAX;	1043	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1509	next_pri = pri + PRI_BIAS;	1044	next_pri = pri;
1510	}	1045	}
1511	OUTPUT:	1046	OUTPUT:
1512	RETVAL	1047	RETVAL
1513		1048
1514	void	1049	void
1515	aioreq_nice (int nice = 0)	1050	aioreq_nice (int nice = 0)
1516	CODE:	1051	CODE:
1517	nice = next_pri - nice;	1052	nice = next_pri - nice;
1518	if (nice < PRI_MIN) nice = PRI_MIN;	1053	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1519	if (nice > PRI_MAX) nice = PRI_MAX;	1054	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1520	next_pri = nice + PRI_BIAS;	1055	next_pri = nice;
1521		1056
1522	void	1057	void
1523	flush ()	1058	flush ()
1524	PROTOTYPE:	1059	PROTOTYPE:
1525	CODE:	1060	CODE:
1526	while (nreqs)	1061	while (eio_nreqs ())
1527	{	1062	{
1528	poll_wait ();	1063	poll_wait ();
1529	poll_cb (0);	1064	poll_cb ();
1530	}	1065	}
1531		1066
1532	void	1067	int
1533	poll()	1068	poll()
1534	PROTOTYPE:	1069	PROTOTYPE:
1535	CODE:	1070	CODE:
1536	if (nreqs)
1537	{
1538	poll_wait ();	1071	poll_wait ();
1539	poll_cb (0);	1072	RETVAL = poll_cb ();
1540	}	1073	OUTPUT:
		1074	RETVAL
1541		1075
1542	int	1076	int
1543	poll_fileno()	1077	poll_fileno()
1544	PROTOTYPE:	1078	PROTOTYPE:
1545	CODE:	1079	CODE:
1546	RETVAL = respipe [0];	1080	RETVAL = s_epipe_fd (&respipe);
1547	OUTPUT:	1081	OUTPUT:
1548	RETVAL	1082	RETVAL
1549		1083
1550	int	1084	int
1551	poll_cb(...)	1085	poll_cb(...)
1552	PROTOTYPE:	1086	PROTOTYPE:
1553	CODE:	1087	CODE:
1554	RETVAL = poll_cb (0);	1088	RETVAL = poll_cb ();
1555	OUTPUT:	1089	OUTPUT:
1556	RETVAL	1090	RETVAL
1557		1091
1558	int
1559	poll_some(int max = 0)
1560	PROTOTYPE: $
1561	CODE:
1562	RETVAL = poll_cb (max);
1563	OUTPUT:
1564	RETVAL
1565
1566	void	1092	void
1567	poll_wait()	1093	poll_wait()
1568	PROTOTYPE:	1094	PROTOTYPE:
1569	CODE:	1095	CODE:
1570	if (nreqs)
1571	poll_wait ();	1096	poll_wait ();
1572		1097
1573	int	1098	int
1574	nreqs()	1099	nreqs()
1575	PROTOTYPE:	1100	PROTOTYPE:
1576	CODE:	1101	CODE:
1577	RETVAL = nreqs;	1102	RETVAL = eio_nreqs ();
1578	OUTPUT:	1103	OUTPUT:
1579	RETVAL	1104	RETVAL
1580		1105
1581	int	1106	int
1582	nready()	1107	nready()
1583	PROTOTYPE:	1108	PROTOTYPE:
1584	CODE:	1109	CODE:
1585	RETVAL = get_nready ();	1110	RETVAL = eio_nready ();
1586	OUTPUT:	1111	OUTPUT:
1587	RETVAL	1112	RETVAL
1588		1113
1589	int	1114	int
1590	npending()	1115	npending()
1591	PROTOTYPE:	1116	PROTOTYPE:
1592	CODE:	1117	CODE:
1593	RETVAL = get_npending ();	1118	RETVAL = eio_npending ();
1594	OUTPUT:	1119	OUTPUT:
1595	RETVAL	1120	RETVAL
1596		1121
		1122	int
		1123	nthreads()
		1124	PROTOTYPE:
		1125	CODE:
		1126	RETVAL = eio_nthreads ();
		1127	OUTPUT:
		1128	RETVAL
		1129
		1130	int
		1131	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1132	PROTOTYPE: $$$$
		1133	CODE:
		1134	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1135	RETVAL = posix_fadvise (fh, offset, length, advice);
		1136	#else
		1137	RETVAL = errno = ENOSYS;
		1138	#endif
		1139	OUTPUT:
		1140	RETVAL
		1141
		1142	ssize_t
		1143	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1144	PROTOTYPE: $$$$
		1145	CODE:
		1146	eio_sendfile_sync (ofh, ifh, offset, count);
		1147
		1148	void _on_next_submit (SV *cb)
		1149	CODE:
		1150	SvREFCNT_dec (on_next_submit);
		1151	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1152
1597	PROTOTYPES: DISABLE	1153	PROTOTYPES: DISABLE
1598		1154
1599	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1155	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1600		1156
1601	void	1157	void
1602	cancel (aio_req_ornot req)	1158	cancel (aio_req_ornot req)
1603	CODE:	1159	CODE:
1604	req_cancel (req);	1160	eio_cancel (req);
1605		1161
1606	void	1162	void
1607	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1163	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1608	CODE:	1164	PPCODE:
		1165	{
		1166	if (GIMME_V != G_VOID)
		1167	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1168
		1169	if (items > 1)
		1170	{
		1171	SV *cb_cv =get_cb (callback);
		1172
1609	SvREFCNT_dec (req->callback);	1173	SvREFCNT_dec (req->callback);
1610	req->callback = newSVsv (callback);	1174	req->callback = SvREFCNT_inc (cb_cv);
		1175	}
		1176	}
1611		1177
1612	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1178	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1613		1179
1614	void	1180	void
1615	add (aio_req grp, ...)	1181	add (aio_req grp, ...)
1616	PPCODE:	1182	PPCODE:
1617	{	1183	{
1618	int i;	1184	int i;
1619	aio_req req;
1620		1185
1621	if (grp->fd == 2)	1186	if (grp->int1 == 2)
1622	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1187	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1623		1188
1624	for (i = 1; i < items; ++i )	1189	for (i = 1; i < items; ++i )
1625	{	1190	{
		1191	aio_req req;
		1192
1626	if (GIMME_V != G_VOID)	1193	if (GIMME_V != G_VOID)
1627	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1194	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1628		1195
1629	req = SvAIO_REQ (ST (i));	1196	req = SvAIO_REQ (ST (i));
1630		1197
1631	if (req)	1198	if (req)
1632	{	1199	eio_grp_add (grp, req);
1633	++grp->length;
1634	req->grp = grp;
1635
1636	req->grp_prev = 0;
1637	req->grp_next = grp->grp_first;
1638
1639	if (grp->grp_first)
1640	grp->grp_first->grp_prev = req;
1641
1642	grp->grp_first = req;
1643	}
1644	}	1200	}
1645	}	1201	}
1646		1202
1647	void	1203	void
1648	cancel_subs (aio_req_ornot req)	1204	cancel_subs (aio_req_ornot req)
…		…
1657	AV *av;	1213	AV *av;
1658		1214
1659	grp->errorno = errno;	1215	grp->errorno = errno;
1660		1216
1661	av = newAV ();	1217	av = newAV ();
		1218	av_extend (av, items - 1);
1662		1219
1663	for (i = 1; i < items; ++i )	1220	for (i = 1; i < items; ++i )
1664	av_push (av, newSVsv (ST (i)));	1221	av_push (av, newSVsv (ST (i)));
1665		1222
1666	SvREFCNT_dec (grp->data);	1223	SvREFCNT_dec (grp->sv1);
1667	grp->data = (SV *)av;	1224	grp->sv1 = (SV *)av;
1668	}	1225	}
1669		1226
1670	void	1227	void
1671	errno (aio_req grp, int errorno = errno)	1228	errno (aio_req grp, int errorno = errno)
1672	CODE:	1229	CODE:
1673	grp->errorno = errorno;	1230	grp->errorno = errorno;
1674		1231
1675	void	1232	void
1676	limit (aio_req grp, int limit)	1233	limit (aio_req grp, int limit)
1677	CODE:	1234	CODE:
1678	grp->fd2 = limit;	1235	eio_grp_limit (grp, limit);
1679	aio_grp_feed (grp);
1680		1236
1681	void	1237	void
1682	feed (aio_req grp, SV *callback=&PL_sv_undef)	1238	feed (aio_req grp, SV *callback=&PL_sv_undef)
1683	CODE:	1239	CODE:
1684	{	1240	{
1685	SvREFCNT_dec (grp->fh2);	1241	SvREFCNT_dec (grp->sv2);
1686	grp->fh2 = newSVsv (callback);	1242	grp->sv2 = newSVsv (callback);
		1243	grp->feed = aio_grp_feed;
1687		1244
1688	if (grp->fd2 <= 0)	1245	if (grp->int2 <= 0)
1689	grp->fd2 = 2;	1246	grp->int2 = 2;
1690		1247
1691	aio_grp_feed (grp);	1248	eio_grp_limit (grp, grp->int2);
1692	}	1249	}
1693		1250

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