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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.84 by root, Sat Oct 28 01:24:19 2006 UTC vs.
Revision 1.150 by root, Wed Jul 1 08:11:24 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"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
32		17
33	#if HAVE_SENDFILE	18	/* perl namespace pollution */
34	# if __linux	19	#undef VERSION
35	# include <sys/sendfile.h>	20
36	# elif __freebsd	21	#ifdef _WIN32
37	# include <sys/socket.h>	22
38	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	24	# undef malloc
40	# include <sys/socket.h>	25	# undef free
41	# elif __solaris /* not yet */	26
42	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
43	# else	59	#else
44	# error sendfile support requested but not available	60
45	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
46	#endif	68	#endif
47		69
48	/* number of seconds after which idle threads exit */	70	/* perl stupidly overrides readdir and maybe others */
49	#define IDLE_TIMEOUT 10	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
50		75
51	/* used for struct dirent, AIX doesn't provide it */	76	#define EIO_STRUCT_STAT Stat_t
52	#ifndef NAME_MAX	77
53	# define NAME_MAX 4096	78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
54	#endif	87	#endif
55		88
56	#ifndef PTHREAD_STACK_MIN	89	/*****************************************************************************/
57	/* care for broken platforms, e.g. windows */	90
58	# define PTHREAD_STACK_MIN 16384	91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
		93	#else
		94	# define expect(expr,value) (expr)
59	#endif	95	#endif
60		96
61	#if __ia64	97	#define expect_false(expr) expect ((expr) != 0, 0)
62	# define STACKSIZE 65536	98	#define expect_true(expr) expect ((expr) != 0, 1)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68		99
69	/* wether word reads are potentially non-atomic.	100	/*****************************************************************************/
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDREAD_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDREAD_UNSAFE 0
76	# else
77	# define WORDREAD_UNSAFE 1
78	# endif
79	#endif
80		101
81	/* buffer size for various temporary buffers */	102	static HV *stash;
82	#define AIO_BUFSIZE 65536	103	typedef SV SV8; /* byte-sv, used for argument-checking */
83		104	typedef int aio_rfd; /* read file desriptor */
84	#define dBUF \	105	typedef int aio_wfd; /* write file descriptor */
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	enum {
93	REQ_QUIT,
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};
105		106
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		109
109	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;	111	SV *callback; \
114	SV *fh, *fh2;	112	SV *sv1, *sv2; \
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;	113	STRLEN stroffset; \
122	int type;	114	SV *self;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126		115
127	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
128	unsigned char pri;
129		117
130	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
132	} aio_cb;	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)
133		149
134	enum {	150	enum {
135	FLAG_CANCELLED = 0x01,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
136	};	152	};
137		153
		154	#include "libeio/eio.c"
		155
138	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
140		158
141	enum {	159	static SV *on_next_submit;
142	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	161	static int max_outstanding;
144		162
145	DEFAULT_PRI = 0,	163	static int respipe_osf [2], respipe [2] = { -1, -1 };
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		164
150	static int next_pri = DEFAULT_PRI + PRI_BIAS;
151
152	static unsigned int started, idle, wanted;
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static volatile unsigned int nreqs, nready, npending;
204	static volatile unsigned int max_idle = 4;
205	static volatile unsigned int max_outstanding = 0xffffffff;
206	static int respipe [2];
207
208	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
209	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
210	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212	#if WORDREAD_UNSAFE
213
214	static unsigned int get_nready ()
215	{
216	unsigned int retval;
217
218	LOCK (reqlock);
219	retval = nready;
220	UNLOCK (reqlock);
221
222	return retval;
223	}
224
225	static unsigned int get_npending ()
226	{
227	unsigned int retval;
228
229	LOCK (reslock);
230	retval = npending;
231	UNLOCK (reslock);
232
233	return retval;
234	}
235
236	#else
237
238	# define get_nready() nready
239	# define get_npending() npending
240
241	#endif
242
243	/*
244	* a somewhat faster data structure might be nice, but
245	* with 8 priorities this actually needs <20 insns
246	* per shift, the most expensive operation.
247	*/
248	typedef struct {
249	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
250	int size;
251	} reqq;
252
253	static reqq req_queue;
254	static reqq res_queue;
255
256	int reqq_push (reqq *q, aio_req req)
257	{
258	int pri = req->pri;
259	req->next = 0;
260
261	if (q->qe[pri])
262	{
263	q->qe[pri]->next = req;
264	q->qe[pri] = req;
265	}
266	else
267	q->qe[pri] = q->qs[pri] = req;
268
269	return q->size++;
270	}
271
272	aio_req reqq_shift (reqq *q)
273	{
274	int pri;
275
276	if (!q->size)
277	return 0;
278
279	--q->size;
280
281	for (pri = NUM_PRI; pri--; )
282	{
283	aio_req req = q->qs[pri];
284
285	if (req)
286	{
287	if (!(q->qs[pri] = req->next))
288	q->qe[pri] = 0;
289
290	return req;
291	}
292	}
293
294	abort ();
295	}
296
297	static int poll_cb (int max);
298	static void req_invoke (aio_req req);
299	static void req_free (aio_req req);	165	static void req_destroy (aio_req req);
300	static void req_cancel (aio_req req);	166	static void req_cancel (aio_req req);
		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	char buf [4];
		178	while (respipe_read (respipe [0], buf, 4) == 4)
		179	;
		180	}
301		181
302	/* must be called at most once */	182	/* must be called at most once */
303	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
304	{	184	{
305	if (!req->self)	185	if (!req->self)
…		…
323	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
324	}	204	}
325		205
326	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
327	{	207	{
328	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
329	{	209	{
330	int old_len = grp->length;
331
332	if (grp->fh2 && SvOK (grp->fh2))
333	{
334	dSP;	210	dSP;
335		211
336	ENTER;	212	ENTER;
337	SAVETMPS;	213	SAVETMPS;
338	PUSHMARK (SP);	214	PUSHMARK (SP);
339	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
340	PUTBACK;	216	PUTBACK;
341	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342	SPAGAIN;	218	SPAGAIN;
343	FREETMPS;	219	FREETMPS;
344	LEAVE;	220	LEAVE;
345	}
346
347	/* stop if no progress has been made */
348	if (old_len == grp->length)
349	{
350	SvREFCNT_dec (grp->fh2);
351	grp->fh2 = 0;
352	break;
353	}
354	}	221	}
355	}	222	}
356		223
357	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
358	{	225	{
359	--grp->length;	226	eio_submit (req);
360		227
361	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
362	aio_grp_feed (grp);
363
364	/* finish, if done */
365	if (!grp->length && grp->fd)
366	{	229	{
367	req_invoke (grp);	230	dSP;
368	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);
369	}	238	}
370	}	239	}
371		240
372	static void req_invoke (aio_req req)	241	static int req_invoke (eio_req *req)
373	{	242	{
374	dSP;	243	dSP;
375		244
376	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)
377	{	249	{
378	ENTER;	250	ENTER;
379	SAVETMPS;	251	SAVETMPS;
380	PUSHMARK (SP);	252	PUSHMARK (SP);
381	EXTEND (SP, 1);	253	EXTEND (SP, 1);
382		254
383	switch (req->type)	255	switch (req->type)
384	{	256	{
385	case REQ_READDIR:	257	case EIO_READDIR:
386	{	258	{
387	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
388		260
389	if (req->result >= 0)	261	if (req->result >= 0)
390	{	262	{
391	int i;	263	int i;
392	char *buf = req->data2ptr;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
393	AV *av = newAV ();	266	AV *av = newAV ();
394		267
395	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
396		269
397	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
398	{	271	{
399	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
400		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
401	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);
402	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
403	}	306	}
404		307
405	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
406	}	309	}
407		310
408	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))));
409	}	315	}
410	break;	316	break;
411		317
412	case REQ_OPEN:	318	case EIO_OPEN:
413	{	319	{
414	/* convert fd to fh */	320	/* convert fd to fh */
415	SV *fh;	321	SV *fh = &PL_sv_undef;
416		322
417	PUSHs (sv_2mortal (newSViv (req->result)));	323	if (req->result >= 0)
418	PUTBACK;	324	{
419	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	325	GV *gv = (GV *)sv_newmortal ();
420	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);
421		332
422	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	);
423		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
424	PUSHMARK (SP);	345	PUSHs (fh);
425	XPUSHs (sv_2mortal (fh));
426	}	346	}
427	break;	347	break;
428		348
429	case REQ_GROUP:	349	case EIO_GROUP:
430	req->fd = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
431		351
432	if (req->data)	352	if (req->sv1)
433	{	353	{
434	int i;	354	int i;
435	AV *av = (AV *)req->data;	355	AV *av = (AV *)req->sv1;
436		356
437	EXTEND (SP, AvFILL (av) + 1);	357	EXTEND (SP, AvFILL (av) + 1);
438	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
439	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
440	}	360	}
441	break;	361	break;
442		362
443	case REQ_NOP:	363	case EIO_NOP:
444	case REQ_BUSY:	364	case EIO_BUSY:
445	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 */
446		395
447	default:	396	default:
448	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
449	break;	398	break;
450	}	399	}
451		400
452	errno = req->errorno;	401	errno = req->errorno;
453		402
454	PUTBACK;	403	PUTBACK;
455	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456	SPAGAIN;	405	SPAGAIN;
457		406
458	FREETMPS;	407	FREETMPS;
459	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
460	}	411	}
461		412
462	if (req->grp)	413	return !!SvTRUE (ERRSV);
463	{
464	aio_req grp = req->grp;
465
466	/* unlink request */
467	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
468	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
469
470	if (grp->grp_first == req)
471	grp->grp_first = req->grp_next;
472
473	aio_grp_dec (grp);
474	}
475
476	if (SvTRUE (ERRSV))
477	{
478	req_free (req);
479	croak (0);
480	}
481	}	414	}
482		415
483	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
484	{	417	{
485	if (req->self)	418	if (req->self)
486	{	419	{
487	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
488	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
489	}	422	}
490		423
491	SvREFCNT_dec (req->data);
492	SvREFCNT_dec (req->fh);	424	SvREFCNT_dec (req->sv1);
493	SvREFCNT_dec (req->fh2);	425	SvREFCNT_dec (req->sv2);
494	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
495	Safefree (req->statdata);
496
497	if (req->type == REQ_READDIR)
498	free (req->data2ptr);
499		427
500	Safefree (req);	428	Safefree (req);
501	}	429	}
502		430
503	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
504	{	432	{
505	aio_req sub;	433	aio_req sub;
506		434
507	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
508	return;	436	return;
509		437
510	SvREFCNT_dec (grp->fh2);	438	SvREFCNT_dec (grp->sv2);
511	grp->fh2 = 0;	439	grp->sv2 = 0;
512		440
513	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
514	req_cancel (sub);
515	}	442	}
516		443
517	static void req_cancel (aio_req req)	444	#ifdef USE_SOCKETS_AS_HANDLES
518	{	445	# define TO_SOCKET(x) (win32_get_osfhandle (x))
519	req->flags |= FLAG_CANCELLED;	446	#else
520		447	# define TO_SOCKET(x) (x)
521	req_cancel_subs (req);
522	}
523
524	static void *aio_proc(void *arg);
525
526	static void start_thread (void)
527	{
528	sigset_t fullsigset, oldsigset;
529	pthread_attr_t attr;
530
531	worker *wrk = calloc (1, sizeof (worker));
532
533	if (!wrk)
534	croak ("unable to allocate worker thread data");
535
536	pthread_attr_init (&attr);
537	pthread_attr_setstacksize (&attr, STACKSIZE);
538	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539	#ifdef PTHREAD_SCOPE_PROCESS
540	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541	#endif	448	#endif
542		449
543	sigfillset (&fullsigset);	450	static void
		451	create_respipe (void)
		452	{
		453	int old_readfd = respipe [0];
544		454
545	LOCK (wrklock);	455	if (respipe [1] >= 0)
546	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	456	respipe_close (TO_SOCKET (respipe [1]));
547		457
548	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	458	#ifdef _WIN32
		459	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		460	#else
		461	if (pipe (respipe))
		462	#endif
		463	croak ("unable to initialize result pipe");
		464
		465	if (old_readfd >= 0)
549	{	466	{
550	wrk->prev = &wrk_first;	467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
551	wrk->next = wrk_first.next;	468	croak ("unable to initialize result pipe(2)");
552	wrk_first.next->prev = wrk;	469
553	wrk_first.next = wrk;	470	respipe_close (respipe [0]);
554	++started;	471	respipe [0] = old_readfd;
555	}	472	}
556	else
557	free (wrk);
558		473
559	sigprocmask (SIG_SETMASK, &oldsigset, 0);	474	#ifdef _WIN32
560	UNLOCK (wrklock);	475	int arg = 1;
561	}	476	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		477	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		478	#else
		479	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		480	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		481	#endif
		482	croak ("unable to initialize result pipe(3)");
562		483
563	static void maybe_start_thread ()	484	respipe_osf [0] = TO_SOCKET (respipe [0]);
564	{	485	respipe_osf [1] = TO_SOCKET (respipe [1]);
565	if (started >= wanted)
566	return;
567
568	/* todo: maybe use idle here, but might be less exact */
569	if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570	return;
571
572	start_thread ();
573	}	486	}
574		487
575	static void req_send (aio_req req)
576	{
577	++nreqs;
578
579	LOCK (reqlock);
580	++nready;
581	reqq_push (&req_queue, req);
582	pthread_cond_signal (&reqwait);
583	UNLOCK (reqlock);
584
585	maybe_start_thread ();
586	}
587
588	static void end_thread (void)
589	{
590	aio_req req;
591
592	Newz (0, req, 1, aio_cb);
593
594	req->type = REQ_QUIT;
595	req->pri = PRI_MAX + PRI_BIAS;
596
597	LOCK (reqlock);
598	reqq_push (&req_queue, req);
599	pthread_cond_signal (&reqwait);
600	UNLOCK (reqlock);
601
602	LOCK (wrklock);
603	--started;
604	UNLOCK (wrklock);
605	}
606
607	static void min_parallel (int nthreads)
608	{
609	if (wanted < nthreads)
610	wanted = nthreads;
611	}
612
613	static void max_parallel (int nthreads)
614	{
615	if (wanted > nthreads)
616	wanted = nthreads;
617
618	while (started > wanted)
619	end_thread ();
620	}
621
622	static void poll_wait ()	488	static void poll_wait (void)
623	{	489	{
624	fd_set rfd;	490	fd_set rfd;
625		491
626	while (nreqs)	492	while (eio_nreqs ())
627	{	493	{
628	int size;	494	int size;
629	if (WORDREAD_UNSAFE) LOCK (reslock);	495
		496	X_LOCK (reslock);
630	size = res_queue.size;	497	size = res_queue.size;
631	if (WORDREAD_UNSAFE) UNLOCK (reslock);	498	X_UNLOCK (reslock);
632		499
633	if (size)	500	if (size)
634	return;	501	return;
635		502
636	maybe_start_thread ();	503	etp_maybe_start_thread ();
637		504
638	FD_ZERO(&rfd);	505	FD_ZERO (&rfd);
639	FD_SET(respipe [0], &rfd);	506	FD_SET (respipe [0], &rfd);
640		507
641	select (respipe [0] + 1, &rfd, 0, 0, 0);	508	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	509	}
643	}	510	}
644		511
645	static int poll_cb (int max)	512	static int poll_cb (void)
646	{	513	{
647	dSP;
648	int count = 0;
649	int do_croak = 0;
650	aio_req req;
651
652	for (;;)	514	for (;;)
653	{	515	{
654	while (max <= 0 || count < max)	516	int res = eio_poll ();
655	{
656	maybe_start_thread ();
657		517
658	LOCK (reslock);	518	if (res > 0)
659	req = reqq_shift (&res_queue);
660
661	if (req)
662	{
663	--npending;
664
665	if (!res_queue.size)
666	{
667	/* read any signals sent by the worker threads */
668	char buf [32];
669	while (read (respipe [0], buf, 32) == 32)
670	;
671	}
672	}
673
674	UNLOCK (reslock);
675
676	if (!req)
677	break;
678
679	--nreqs;
680
681	if (req->type == REQ_GROUP && req->length)
682	{
683	req->fd = 1; /* mark request as delayed */
684	continue;
685	}
686	else
687	{
688	if (req->type == REQ_READ)
689	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692	SvREADONLY_off (req->data);
693
694	if (req->statdata)
695	{
696	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697	PL_laststatval = req->result;
698	PL_statcache = *(req->statdata);
699	}
700
701	req_invoke (req);
702
703	count++;
704	}
705
706	req_free (req);
707	}
708
709	if (nreqs <= max_outstanding)
710	break;	519	croak (0);
		520
		521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
711		523
712	poll_wait ();	524	poll_wait ();
713
714	max = 0;
715	}	525	}
716
717	return count;
718	}	526	}
719		527
720	static void create_pipe ()	528	static void atfork_child (void)
721	{	529	{
722	if (pipe (respipe))	530	create_respipe ();
723	croak ("unable to initialize result pipe");
724
725	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
726	croak ("cannot set result pipe to nonblocking mode");
727
728	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
729	croak ("cannot set result pipe to nonblocking mode");
730	}	531	}
731		532
732	/*****************************************************************************/	533	static SV *
733	/* work around various missing functions */	534	get_cb (SV *cb_sv)
734
735	#if !HAVE_PREADWRITE
736	# define pread aio_pread
737	# define pwrite aio_pwrite
738
739	/*
740	* make our pread/pwrite safe against themselves, but not against
741	* normal read/write by using a mutex. slows down execution a lot,
742	* but that's your problem, not mine.
743	*/
744	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
745
746	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
747	{	535	{
748	ssize_t res;	536	HV *st;
749	off_t ooffset;	537	GV *gvp;
		538	CV *cv;
750		539
751	LOCK (preadwritelock);	540	if (!SvOK (cb_sv))
752	ooffset = lseek (fd, 0, SEEK_CUR);
753	lseek (fd, offset, SEEK_SET);
754	res = read (fd, buf, count);
755	lseek (fd, ooffset, SEEK_SET);
756	UNLOCK (preadwritelock);
757
758	return res;
759	}
760
761	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = write (fd, buf, count);
770	lseek (fd, offset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775	#endif
776
777	#if !HAVE_FDATASYNC
778	# define fdatasync fsync
779	#endif
780
781	#if !HAVE_READAHEAD
782	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
783
784	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
785	{
786	dBUF;
787
788	while (count > 0)
789	{
790	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
791
792	pread (fd, aio_buf, len, offset);
793	offset += len;
794	count -= len;
795	}
796
797	errno = 0;
798	}
799
800	#endif
801
802	#if !HAVE_READDIR_R
803	# define readdir_r aio_readdir_r
804
805	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
806
807	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
808	{
809	struct dirent *e;
810	int errorno;
811
812	LOCK (readdirlock);
813
814	e = readdir (dirp);
815	errorno = errno;
816
817	if (e)
818	{
819	*res = ent;
820	strcpy (ent->d_name, e->d_name);
821	}
822	else
823	*res = 0;
824
825	UNLOCK (readdirlock);
826
827	errno = errorno;
828	return e ? 0 : -1;
829	}
830	#endif
831
832	/* sendfile always needs emulation */
833	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
834	{
835	ssize_t res;
836
837	if (!count)
838	return 0;	541	return 0;
839		542
840	#if HAVE_SENDFILE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
841	# if __linux
842	res = sendfile (ofd, ifd, &offset, count);
843		544
844	# elif __freebsd	545	if (!cv)
845	/*	546	croak ("IO::AIO callback must be undef or a CODE reference");
846	* Of course, the freebsd sendfile is a dire hack with no thoughts
847	* wasted on making it similar to other I/O functions.
848	*/
849	{
850	off_t sbytes;
851	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
852		547
853	if (res < 0 && sbytes)	548	return (SV *)cv;
854	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
855	res = sbytes;
856	}
857
858	# elif __hpux
859	res = sendfile (ofd, ifd, offset, count, 0, 0);
860
861	# elif __solaris
862	{
863	struct sendfilevec vec;
864	size_t sbytes;
865
866	vec.sfv_fd = ifd;
867	vec.sfv_flag = 0;
868	vec.sfv_off = offset;
869	vec.sfv_len = count;
870
871	res = sendfilev (ofd, &vec, 1, &sbytes);
872
873	if (res < 0 && sbytes)
874	res = sbytes;
875	}
876
877	# endif
878	#else
879	res = -1;
880	errno = ENOSYS;
881	#endif
882
883	if (res < 0
884	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
885	#if __solaris
886	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
887	#endif
888	)
889	)
890	{
891	/* emulate sendfile. this is a major pain in the ass */
892	dBUF;
893
894	res = 0;
895
896	while (count)
897	{
898	ssize_t cnt;
899
900	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
901
902	if (cnt <= 0)
903	{
904	if (cnt && !res) res = -1;
905	break;
906	}
907
908	cnt = write (ofd, aio_buf, cnt);
909
910	if (cnt <= 0)
911	{
912	if (cnt && !res) res = -1;
913	break;
914	}
915
916	offset += cnt;
917	res += cnt;
918	count -= cnt;
919	}
920	}
921
922	return res;
923	}
924
925	/* read a full directory */
926	static void scandir_ (aio_req req, worker *self)
927	{
928	DIR *dirp;
929	union
930	{
931	struct dirent d;
932	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
933	} *u;
934	struct dirent *entp;
935	char *name, *names;
936	int memlen = 4096;
937	int memofs = 0;
938	int res = 0;
939	int errorno;
940
941	LOCK (wrklock);
942	self->dirp = dirp = opendir (req->dataptr);
943	self->dbuf = u = malloc (sizeof (*u));
944	req->data2ptr = names = malloc (memlen);
945	UNLOCK (wrklock);
946
947	if (dirp && u && names)
948	for (;;)
949	{
950	errno = 0;
951	readdir_r (dirp, &u->d, &entp);
952
953	if (!entp)
954	break;
955
956	name = entp->d_name;
957
958	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
959	{
960	int len = strlen (name) + 1;
961
962	res++;
963
964	while (memofs + len > memlen)
965	{
966	memlen *= 2;
967	LOCK (wrklock);
968	req->data2ptr = names = realloc (names, memlen);
969	UNLOCK (wrklock);
970
971	if (!names)
972	break;
973	}
974
975	memcpy (names + memofs, name, len);
976	memofs += len;
977	}
978	}
979
980	if (errno)
981	res = -1;
982
983	req->result = res;
984	}
985
986	/*****************************************************************************/
987
988	static void *aio_proc (void *thr_arg)
989	{
990	aio_req req;
991	struct timespec ts;
992	worker *self = (worker *)thr_arg;
993
994	/* try to distribute timeouts somewhat evenly */
995	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996	* (1000000000UL / 1024UL);
997
998	for (;;)
999	{
1000	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
1002	LOCK (reqlock);
1003
1004	for (;;)
1005	{
1006	self->req = req = reqq_shift (&req_queue);
1007
1008	if (req)
1009	break;
1010
1011	++idle;
1012
1013	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014	== ETIMEDOUT)
1015	{
1016	if (idle > max_idle)
1017	{
1018	--idle;
1019	UNLOCK (reqlock);
1020	LOCK (wrklock);
1021	--started;
1022	UNLOCK (wrklock);
1023	goto quit;
1024	}
1025
1026	/* we are allowed to idle, so do so without any timeout */
1027	pthread_cond_wait (&reqwait, &reqlock);
1028	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029	}
1030
1031	--idle;
1032	}
1033
1034	--nready;
1035
1036	UNLOCK (reqlock);
1037
1038	errno = 0; /* strictly unnecessary */
1039
1040	if (!(req->flags & FLAG_CANCELLED))
1041	switch (req->type)
1042	{
1043	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1044	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1045
1046	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1047	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1048
1049	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1050	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1051	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1052
1053	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1054	case REQ_CLOSE: req->result = close (req->fd); break;
1055	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1056	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1057	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1058	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1059	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1061
1062	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1063	case REQ_FSYNC: req->result = fsync (req->fd); break;
1064	case REQ_READDIR: scandir_ (req, self); break;
1065
1066	case REQ_BUSY:
1067	{
1068	struct timeval tv;
1069
1070	tv.tv_sec = req->fd;
1071	tv.tv_usec = req->fd2;
1072
1073	req->result = select (0, 0, 0, 0, &tv);
1074	}
1075
1076	case REQ_GROUP:
1077	case REQ_NOP:
1078	break;
1079
1080	case REQ_QUIT:
1081	goto quit;
1082
1083	default:
1084	req->result = ENOSYS;
1085	break;
1086	}
1087
1088	req->errorno = errno;
1089
1090	LOCK (reslock);
1091
1092	++npending;
1093
1094	if (!reqq_push (&res_queue, req))
1095	/* write a dummy byte to the pipe so fh becomes ready */
1096	write (respipe [1], &respipe, 1);
1097
1098	self->req = 0;
1099	worker_clear (self);
1100
1101	UNLOCK (reslock);
1102	}
1103
1104	quit:
1105	LOCK (wrklock);
1106	worker_free (self);
1107	UNLOCK (wrklock);
1108
1109	return 0;
1110	}
1111
1112	/*****************************************************************************/
1113
1114	static void atfork_prepare (void)
1115	{
1116	LOCK (wrklock);
1117	LOCK (reqlock);
1118	LOCK (reslock);
1119	#if !HAVE_PREADWRITE
1120	LOCK (preadwritelock);
1121	#endif
1122	#if !HAVE_READDIR_R
1123	LOCK (readdirlock);
1124	#endif
1125	}
1126
1127	static void atfork_parent (void)
1128	{
1129	#if !HAVE_READDIR_R
1130	UNLOCK (readdirlock);
1131	#endif
1132	#if !HAVE_PREADWRITE
1133	UNLOCK (preadwritelock);
1134	#endif
1135	UNLOCK (reslock);
1136	UNLOCK (reqlock);
1137	UNLOCK (wrklock);
1138	}
1139
1140	static void atfork_child (void)
1141	{
1142	aio_req prv;
1143
1144	while (prv = reqq_shift (&req_queue))
1145	req_free (prv);
1146
1147	while (prv = reqq_shift (&res_queue))
1148	req_free (prv);
1149
1150	while (wrk_first.next != &wrk_first)
1151	{
1152	worker *wrk = wrk_first.next;
1153
1154	if (wrk->req)
1155	req_free (wrk->req);
1156
1157	worker_clear (wrk);
1158	worker_free (wrk);
1159	}
1160
1161	started = 0;
1162	idle = 0;
1163	nreqs = 0;
1164	nready = 0;
1165	npending = 0;
1166
1167	close (respipe [0]);
1168	close (respipe [1]);
1169	create_pipe ();
1170
1171	atfork_parent ();
1172	}	549	}
1173		550
1174	#define dREQ \	551	#define dREQ \
		552	SV *cb_cv; \
1175	aio_req req; \	553	aio_req req; \
1176	int req_pri = next_pri; \	554	int req_pri = next_pri; \
1177	next_pri = DEFAULT_PRI + PRI_BIAS; \	555	next_pri = EIO_PRI_DEFAULT; \
1178	\	556	\
1179	if (SvOK (callback) && !SvROK (callback)) \	557	cb_cv = get_cb (callback); \
1180	croak ("callback must be undef or of reference type"); \
1181	\	558	\
1182	Newz (0, req, 1, aio_cb); \	559	Newz (0, req, 1, eio_req); \
1183	if (!req) \	560	if (!req) \
1184	croak ("out of memory during aio_req allocation"); \	561	croak ("out of memory during eio_req allocation"); \
1185	\	562	\
1186	req->callback = newSVsv (callback); \	563	req->callback = SvREFCNT_inc (cb_cv); \
1187	req->pri = req_pri	564	req->pri = req_pri
1188		565
1189	#define REQ_SEND \	566	#define REQ_SEND \
		567	PUTBACK; \
1190	req_send (req); \	568	req_submit (req); \
		569	SPAGAIN; \
1191	\	570	\
1192	if (GIMME_V != G_VOID) \	571	if (GIMME_V != G_VOID) \
1193	XPUSHs (req_sv (req, AIO_REQ_KLASS));	572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1194		573
		574	static int
		575	extract_fd (SV *fh, int wr)
		576	{
		577	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		578
		579	if (fd < 0)
		580	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		581
		582	return fd;
		583	}
		584
1195	MODULE = IO::AIO PACKAGE = IO::AIO	585	MODULE = IO::AIO PACKAGE = IO::AIO
1196		586
1197	PROTOTYPES: ENABLE	587	PROTOTYPES: ENABLE
1198		588
1199	BOOT:	589	BOOT:
1200	{	590	{
		591	static const struct {
		592	const char *name;
		593	IV iv;
		594	} *civ, const_iv[] = {
		595	# define const_iv(name, value) { # name, (IV) value },
		596	# define const_eio(name) { # name, (IV) EIO_ ## name },
		597	const_iv (EXDEV , EXDEV)
		598	const_iv (ENOSYS , ENOSYS)
		599	const_iv (O_RDONLY, O_RDONLY)
		600	const_iv (O_WRONLY, O_WRONLY)
		601	const_iv (O_CREAT , O_CREAT)
		602	const_iv (O_TRUNC , O_TRUNC)
		603	#ifndef _WIN32
		604	const_iv (S_IFIFO , S_IFIFO)
		605	#endif
		606	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		607	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		608	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		609	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		610	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		611	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		612
		613	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		614	const_eio (SYNC_FILE_RANGE_WRITE)
		615	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		616
		617	const_eio (READDIR_DENTS)
		618	const_eio (READDIR_DIRS_FIRST)
		619	const_eio (READDIR_STAT_ORDER)
		620	const_eio (READDIR_FOUND_UNKNOWN)
		621
		622	const_eio (DT_UNKNOWN)
		623	const_eio (DT_FIFO)
		624	const_eio (DT_CHR)
		625	const_eio (DT_DIR)
		626	const_eio (DT_BLK)
		627	const_eio (DT_REG)
		628	const_eio (DT_LNK)
		629	const_eio (DT_SOCK)
		630	const_eio (DT_WHT)
		631	};
		632
1201	HV *stash = gv_stashpv ("IO::AIO", 1);	633	stash = gv_stashpv ("IO::AIO", 1);
1202		634
1203	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	635	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1204	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	636	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1205	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1208	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1209		637
1210	create_pipe ();	638	create_respipe ();
1211	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	639
		640	if (eio_init (want_poll, done_poll) < 0)
		641	croak ("IO::AIO: unable to initialise eio library");
		642
		643	/* atfork child called in fifo order, so before eio's handler */
		644	X_THREAD_ATFORK (0, 0, atfork_child);
1212	}	645	}
		646
		647	void
		648	max_poll_reqs (int nreqs)
		649	PROTOTYPE: $
		650	CODE:
		651	eio_set_max_poll_reqs (nreqs);
		652
		653	void
		654	max_poll_time (double nseconds)
		655	PROTOTYPE: $
		656	CODE:
		657	eio_set_max_poll_time (nseconds);
1213		658
1214	void	659	void
1215	min_parallel (int nthreads)	660	min_parallel (int nthreads)
1216	PROTOTYPE: $	661	PROTOTYPE: $
		662	CODE:
		663	eio_set_min_parallel (nthreads);
1217		664
1218	void	665	void
1219	max_parallel (int nthreads)	666	max_parallel (int nthreads)
1220	PROTOTYPE: $	667	PROTOTYPE: $
		668	CODE:
		669	eio_set_max_parallel (nthreads);
1221		670
1222	int	671	void
		672	max_idle (int nthreads)
		673	PROTOTYPE: $
		674	CODE:
		675	eio_set_max_idle (nthreads);
		676
		677	void
1223	max_outstanding (int maxreqs)	678	max_outstanding (int maxreqs)
1224	PROTOTYPE: $	679	PROTOTYPE: $
1225	CODE:	680	CODE:
1226	RETVAL = max_outstanding;
1227	max_outstanding = maxreqs;	681	max_outstanding = maxreqs;
1228	OUTPUT:
1229	RETVAL
1230		682
1231	void	683	void
1232	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	684	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1233	SV * pathname
1234	int flags
1235	int mode
1236	SV * callback
1237	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1238	PPCODE:	686	PPCODE:
1239	{	687	{
1240	dREQ;	688	dREQ;
1241		689
1242	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
1243	req->data = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
1244	req->dataptr = SvPVbyte_nolen (req->data);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
1245	req->fd = flags;	693	req->int1 = flags;
1246	req->mode = mode;	694	req->int2 = mode;
1247		695
1248	REQ_SEND;	696	REQ_SEND;
1249	}	697	}
1250		698
1251	void	699	void
1252	aio_close (fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1253	SV * fh
1254	SV * callback
1255	PROTOTYPE: $;$	701	PROTOTYPE: $;$
1256	ALIAS:	702	ALIAS:
1257	aio_close = REQ_CLOSE
1258	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
1259	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
1260	PPCODE:	705	PPCODE:
1261	{	706	{
		707	int fd = extract_fd (fh, 0);
1262	dREQ;	708	dREQ;
1263		709
1264	req->type = ix;	710	req->type = ix;
1265	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
1267		713
1268	REQ_SEND (req);	714	REQ_SEND (req);
1269	}	715	}
1270		716
1271	void	717	void
		718	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		719	PROTOTYPE: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
1272	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1273	SV * fh
1274	UV offset
1275	UV length
1276	SV * data
1277	UV dataoffset
1278	SV * callback
1279	ALIAS:	766	ALIAS:
1280	aio_read = REQ_READ	767	aio_read = EIO_READ
1281	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
1282	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
1283	PPCODE:	770	PPCODE:
1284	{	771	{
1285	aio_req req;
1286	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
1287	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
1288		775	UV len = SvUV (length);
1289	SvUPGRADE (data, SVt_PV);
1290	SvPOK_on (data);
1291		776
1292	if (dataoffset < 0)	777	if (dataoffset < 0)
1293	dataoffset += svlen;	778	dataoffset += svlen;
1294		779
1295	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
1296	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
1297		782
1298	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
1299	{	784	{
1300	/* write: check length and adjust. */	785	/* write: check length and adjust. */
1301	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
1302	length = svlen - dataoffset;	787	len = svlen - dataoffset;
1303	}	788	}
1304	else	789	else
1305	{	790	{
1306	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
1307	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
1308	}	794	}
1309
1310	if (length < 0)
1311	croak ("length must not be negative");
1312		795
1313	{	796	{
1314	dREQ;	797	dREQ;
1315		798
1316	req->type = ix;	799	req->type = ix;
1317	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
1318	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
1319	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320	req->offset = offset;	803	req->size = len;
1321	req->length = length;
1322	req->data = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
1323	req->dataptr = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
		806	req->stroffset = dataoffset;
1324		807
1325	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
1326	{	809	{
1327	SvREADONLY_on (data);	810	SvREADONLY_on (data);
1328	req->data2ptr = (void *)data;	811	req->flags |= FLAG_SV2_RO_OFF;
1329	}	812	}
1330		813
1331	REQ_SEND;	814	REQ_SEND;
1332	}	815	}
1333	}	816	}
1334		817
1335	void	818	void
		819	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		820	PROTOTYPE: $$;$
		821	PPCODE:
		822	{
		823	SV *data;
		824	dREQ;
		825
		826	req->type = EIO_READLINK;
		827	req->sv1 = newSVsv (path);
		828	req->ptr1 = SvPVbyte_nolen (req->sv1);
		829
		830	REQ_SEND;
		831	}
		832
		833	void
1336	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	834	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1337	SV * out_fh
1338	SV * in_fh
1339	UV in_offset
1340	UV length
1341	SV * callback
1342	PROTOTYPE: $$$$;$	835	PROTOTYPE: $$$$;$
1343	PPCODE:	836	PPCODE:
1344	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
1345	dREQ;	840	dREQ;
1346		841
1347	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
1348	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
1349	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
1350	req->fh2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
1351	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
1352	req->offset = in_offset;	847	req->offs = in_offset;
1353	req->length = length;	848	req->size = length;
1354		849
1355	REQ_SEND;	850	REQ_SEND;
1356	}	851	}
1357		852
1358	void	853	void
1359	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1360	SV * fh
1361	UV offset
1362	IV length
1363	SV * callback
1364	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
1365	PPCODE:	856	PPCODE:
1366	{	857	{
		858	int fd = extract_fd (fh, 0);
1367	dREQ;	859	dREQ;
1368		860
1369	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
1370	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
1371	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
1372	req->offset = offset;	864	req->offs = offset;
1373	req->length = length;	865	req->size = length;
1374		866
1375	REQ_SEND;	867	REQ_SEND;
1376	}	868	}
1377		869
1378	void	870	void
1379	aio_stat (fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1380	SV * fh_or_path
1381	SV * callback
1382	ALIAS:	872	ALIAS:
1383	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
1384	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
1385	PPCODE:	875	PPCODE:
1386	{	876	{
1387	dREQ;	877	dREQ;
1388		878
1389	New (0, req->statdata, 1, Stat_t);	879	req->sv1 = newSVsv (fh_or_path);
1390	if (!req->statdata)
1391	{
1392	req_free (req);
1393	croak ("out of memory during aio_req->statdata allocation");
1394	}
1395		880
1396	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1397	{	882	{
1398	req->type = ix;	883	req->type = ix;
1399	req->data = newSVsv (fh_or_path);
1400	req->dataptr = SvPVbyte_nolen (req->data);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	}	885	}
1402	else	886	else
1403	{	887	{
1404	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
1405	req->fh = newSVsv (fh_or_path);
1406	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1407	}	890	}
1408		891
1409	REQ_SEND;	892	REQ_SEND;
1410	}	893	}
1411		894
1412	void	895	void
		896	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	dREQ;
		900
		901	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		902	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		903	req->sv1 = newSVsv (fh_or_path);
		904
		905	if (SvPOK (req->sv1))
		906	{
		907	req->type = EIO_UTIME;
		908	req->ptr1 = SvPVbyte_nolen (req->sv1);
		909	}
		910	else
		911	{
		912	req->type = EIO_FUTIME;
		913	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		914	}
		915
		916	REQ_SEND;
		917	}
		918
		919	void
		920	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		921	PPCODE:
		922	{
		923	dREQ;
		924
		925	req->sv1 = newSVsv (fh_or_path);
		926	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		927
		928	if (SvPOK (req->sv1))
		929	{
		930	req->type = EIO_TRUNCATE;
		931	req->ptr1 = SvPVbyte_nolen (req->sv1);
		932	}
		933	else
		934	{
		935	req->type = EIO_FTRUNCATE;
		936	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		937	}
		938
		939	REQ_SEND;
		940	}
		941
		942	void
		943	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		944	ALIAS:
		945	aio_chmod = EIO_CHMOD
		946	aio_mkdir = EIO_MKDIR
		947	PPCODE:
		948	{
		949	dREQ;
		950
		951	req->int2 = mode;
		952	req->sv1 = newSVsv (fh_or_path);
		953
		954	if (SvPOK (req->sv1))
		955	{
		956	req->type = ix;
		957	req->ptr1 = SvPVbyte_nolen (req->sv1);
		958	}
		959	else
		960	{
		961	req->type = EIO_FCHMOD;
		962	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		963	}
		964
		965	REQ_SEND;
		966	}
		967
		968	void
		969	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		970	PPCODE:
		971	{
		972	dREQ;
		973
		974	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		975	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		976	req->sv1 = newSVsv (fh_or_path);
		977
		978	if (SvPOK (req->sv1))
		979	{
		980	req->type = EIO_CHOWN;
		981	req->ptr1 = SvPVbyte_nolen (req->sv1);
		982	}
		983	else
		984	{
		985	req->type = EIO_FCHOWN;
		986	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		987	}
		988
		989	REQ_SEND;
		990	}
		991
		992	void
		993	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = EIO_READDIR;
		999	req->sv1 = newSVsv (pathname);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1002
		1003	if (flags & EIO_READDIR_DENTS)
		1004	req->int1 |= EIO_READDIR_CUSTOM2;
		1005
		1006	REQ_SEND;
		1007	}
		1008
		1009	void
1413	aio_unlink (pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414	SV * pathname
1415	SV * callback
1416	ALIAS:	1011	ALIAS:
1417	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
1418	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
1419	aio_readdir = REQ_READDIR	1014	aio_readdir = EIO_READDIR
1420	PPCODE:	1015	PPCODE:
1421	{	1016	{
1422	dREQ;	1017	dREQ;
1423		1018
1424	req->type = ix;	1019	req->type = ix;
1425	req->data = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
1426	req->dataptr = SvPVbyte_nolen (req->data);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1427		1022
1428	REQ_SEND;	1023	REQ_SEND;
1429	}	1024	}
1430		1025
1431	void	1026	void
1432	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1433	SV * oldpath
1434	SV * newpath
1435	SV * callback
1436	ALIAS:	1028	ALIAS:
1437	aio_link = REQ_LINK	1029	aio_link = EIO_LINK
1438	aio_symlink = REQ_SYMLINK	1030	aio_symlink = EIO_SYMLINK
1439	aio_rename = REQ_RENAME	1031	aio_rename = EIO_RENAME
1440	PPCODE:	1032	PPCODE:
1441	{	1033	{
1442	dREQ;	1034	dREQ;
1443		1035
1444	req->type = ix;	1036	req->type = ix;
1445	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
1446	req->data2ptr = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
1447	req->data = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
1448	req->dataptr = SvPVbyte_nolen (req->data);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
1449		1041
1450	REQ_SEND;	1042	REQ_SEND;
1451	}	1043	}
1452		1044
1453	void	1045	void
1454	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1455	SV * pathname
1456	SV * callback
1457	UV mode
1458	UV dev
1459	PPCODE:	1047	PPCODE:
1460	{	1048	{
1461	dREQ;	1049	dREQ;
1462		1050
1463	req->type = REQ_MKNOD;	1051	req->type = EIO_MKNOD;
1464	req->data = newSVsv (pathname);	1052	req->sv1 = newSVsv (pathname);
1465	req->dataptr = SvPVbyte_nolen (req->data);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1466	req->mode = (mode_t)mode;	1054	req->int2 = (mode_t)mode;
1467	req->offset = dev;	1055	req->offs = dev;
1468		1056
1469	REQ_SEND;	1057	REQ_SEND;
1470	}	1058	}
1471		1059
1472	void	1060	void
1473	aio_busy (delay,callback=&PL_sv_undef)	1061	aio_busy (double delay, SV *callback=&PL_sv_undef)
1474	double delay
1475	SV * callback
1476	PPCODE:	1062	PPCODE:
1477	{	1063	{
1478	dREQ;	1064	dREQ;
1479		1065
1480	req->type = REQ_BUSY;	1066	req->type = EIO_BUSY;
1481	req->fd = delay < 0. ? 0 : delay;	1067	req->nv1 = delay < 0. ? 0. : delay;
1482	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1483		1068
1484	REQ_SEND;	1069	REQ_SEND;
1485	}	1070	}
1486		1071
1487	void	1072	void
1488	aio_group (callback=&PL_sv_undef)	1073	aio_group (SV *callback=&PL_sv_undef)
1489	SV * callback
1490	PROTOTYPE: ;$	1074	PROTOTYPE: ;$
1491	PPCODE:	1075	PPCODE:
1492	{	1076	{
1493	dREQ;	1077	dREQ;
1494		1078
1495	req->type = REQ_GROUP;	1079	req->type = EIO_GROUP;
		1080
1496	req_send (req);	1081	req_submit (req);
1497
1498	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1499	}	1083	}
1500		1084
1501	void	1085	void
1502	aio_nop (callback=&PL_sv_undef)	1086	aio_nop (SV *callback=&PL_sv_undef)
1503	SV * callback	1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
1504	PPCODE:	1090	PPCODE:
1505	{	1091	{
1506	dREQ;	1092	dREQ;
1507		1093
1508	req->type = REQ_NOP;	1094	req->type = ix;
1509		1095
1510	REQ_SEND;	1096	REQ_SEND;
1511	}	1097	}
1512		1098
1513	int	1099	int
1514	aioreq_pri (int pri = 0)	1100	aioreq_pri (int pri = 0)
1515	PROTOTYPE: ;$	1101	PROTOTYPE: ;$
1516	CODE:	1102	CODE:
1517	RETVAL = next_pri - PRI_BIAS;	1103	RETVAL = next_pri;
1518	if (items > 0)	1104	if (items > 0)
1519	{	1105	{
1520	if (pri < PRI_MIN) pri = PRI_MIN;	1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521	if (pri > PRI_MAX) pri = PRI_MAX;	1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522	next_pri = pri + PRI_BIAS;	1108	next_pri = pri;
1523	}	1109	}
1524	OUTPUT:	1110	OUTPUT:
1525	RETVAL	1111	RETVAL
1526		1112
1527	void	1113	void
1528	aioreq_nice (int nice = 0)	1114	aioreq_nice (int nice = 0)
1529	CODE:	1115	CODE:
1530	nice = next_pri - nice;	1116	nice = next_pri - nice;
1531	if (nice < PRI_MIN) nice = PRI_MIN;	1117	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532	if (nice > PRI_MAX) nice = PRI_MAX;	1118	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533	next_pri = nice + PRI_BIAS;	1119	next_pri = nice;
1534		1120
1535	void	1121	void
1536	flush ()	1122	flush ()
1537	PROTOTYPE:	1123	PROTOTYPE:
1538	CODE:	1124	CODE:
1539	while (nreqs)	1125	while (eio_nreqs ())
1540	{	1126	{
1541	poll_wait ();	1127	poll_wait ();
1542	poll_cb (0);	1128	poll_cb ();
1543	}	1129	}
1544		1130
1545	void	1131	int
1546	poll()	1132	poll()
1547	PROTOTYPE:	1133	PROTOTYPE:
1548	CODE:	1134	CODE:
1549	if (nreqs)
1550	{
1551	poll_wait ();	1135	poll_wait ();
1552	poll_cb (0);	1136	RETVAL = poll_cb ();
1553	}	1137	OUTPUT:
		1138	RETVAL
1554		1139
1555	int	1140	int
1556	poll_fileno()	1141	poll_fileno()
1557	PROTOTYPE:	1142	PROTOTYPE:
1558	CODE:	1143	CODE:
…		…
1562		1147
1563	int	1148	int
1564	poll_cb(...)	1149	poll_cb(...)
1565	PROTOTYPE:	1150	PROTOTYPE:
1566	CODE:	1151	CODE:
1567	RETVAL = poll_cb (0);	1152	RETVAL = poll_cb ();
1568	OUTPUT:	1153	OUTPUT:
1569	RETVAL	1154	RETVAL
1570		1155
1571	int
1572	poll_some(int max = 0)
1573	PROTOTYPE: $
1574	CODE:
1575	RETVAL = poll_cb (max);
1576	OUTPUT:
1577	RETVAL
1578
1579	void	1156	void
1580	poll_wait()	1157	poll_wait()
1581	PROTOTYPE:	1158	PROTOTYPE:
1582	CODE:	1159	CODE:
1583	if (nreqs)
1584	poll_wait ();	1160	poll_wait ();
1585		1161
1586	int	1162	int
1587	nreqs()	1163	nreqs()
1588	PROTOTYPE:	1164	PROTOTYPE:
1589	CODE:	1165	CODE:
1590	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
1591	OUTPUT:	1167	OUTPUT:
1592	RETVAL	1168	RETVAL
1593		1169
1594	int	1170	int
1595	nready()	1171	nready()
1596	PROTOTYPE:	1172	PROTOTYPE:
1597	CODE:	1173	CODE:
1598	RETVAL = get_nready ();	1174	RETVAL = eio_nready ();
1599	OUTPUT:	1175	OUTPUT:
1600	RETVAL	1176	RETVAL
1601		1177
1602	int	1178	int
1603	npending()	1179	npending()
1604	PROTOTYPE:	1180	PROTOTYPE:
1605	CODE:	1181	CODE:
1606	RETVAL = get_npending ();	1182	RETVAL = eio_npending ();
1607	OUTPUT:	1183	OUTPUT:
1608	RETVAL	1184	RETVAL
1609		1185
		1186	int
		1187	nthreads()
		1188	PROTOTYPE:
		1189	CODE:
		1190	RETVAL = eio_nthreads ();
		1191	OUTPUT:
		1192	RETVAL
		1193
		1194	int
		1195	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1196	PROTOTYPE: $$$$
		1197	CODE:
		1198	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	OUTPUT:
		1204	RETVAL
		1205
		1206	ssize_t
		1207	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1208	PROTOTYPE: $$$$
		1209	CODE:
		1210	eio_sendfile_sync (ofh, ifh, offset, count);
		1211
		1212	void _on_next_submit (SV *cb)
		1213	CODE:
		1214	SvREFCNT_dec (on_next_submit);
		1215	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1216
1610	PROTOTYPES: DISABLE	1217	PROTOTYPES: DISABLE
1611		1218
1612	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1219	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613		1220
1614	void	1221	void
1615	cancel (aio_req_ornot req)	1222	cancel (aio_req_ornot req)
1616	CODE:	1223	CODE:
1617	req_cancel (req);	1224	eio_cancel (req);
1618		1225
1619	void	1226	void
1620	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1227	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1621	CODE:	1228	PPCODE:
		1229	{
		1230	if (GIMME_V != G_VOID)
		1231	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1232
		1233	if (items > 1)
		1234	{
		1235	SV *cb_cv = get_cb (callback);
		1236
1622	SvREFCNT_dec (req->callback);	1237	SvREFCNT_dec (req->callback);
1623	req->callback = newSVsv (callback);	1238	req->callback = SvREFCNT_inc (cb_cv);
		1239	}
		1240	}
1624		1241
1625	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1242	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1626		1243
1627	void	1244	void
1628	add (aio_req grp, ...)	1245	add (aio_req grp, ...)
1629	PPCODE:	1246	PPCODE:
1630	{	1247	{
1631	int i;	1248	int i;
1632	aio_req req;
1633		1249
1634	if (grp->fd == 2)	1250	if (grp->int1 == 2)
1635	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1251	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1636		1252
1637	for (i = 1; i < items; ++i )	1253	for (i = 1; i < items; ++i )
1638	{	1254	{
		1255	aio_req req;
		1256
1639	if (GIMME_V != G_VOID)	1257	if (GIMME_V != G_VOID)
1640	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1258	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641		1259
1642	req = SvAIO_REQ (ST (i));	1260	req = SvAIO_REQ (ST (i));
1643		1261
1644	if (req)	1262	if (req)
1645	{	1263	eio_grp_add (grp, req);
1646	++grp->length;
1647	req->grp = grp;
1648
1649	req->grp_prev = 0;
1650	req->grp_next = grp->grp_first;
1651
1652	if (grp->grp_first)
1653	grp->grp_first->grp_prev = req;
1654
1655	grp->grp_first = req;
1656	}
1657	}	1264	}
1658	}	1265	}
1659		1266
1660	void	1267	void
1661	cancel_subs (aio_req_ornot req)	1268	cancel_subs (aio_req_ornot req)
…		…
1670	AV *av;	1277	AV *av;
1671		1278
1672	grp->errorno = errno;	1279	grp->errorno = errno;
1673		1280
1674	av = newAV ();	1281	av = newAV ();
		1282	av_extend (av, items - 1);
1675		1283
1676	for (i = 1; i < items; ++i )	1284	for (i = 1; i < items; ++i )
1677	av_push (av, newSVsv (ST (i)));	1285	av_push (av, newSVsv (ST (i)));
1678		1286
1679	SvREFCNT_dec (grp->data);	1287	SvREFCNT_dec (grp->sv1);
1680	grp->data = (SV *)av;	1288	grp->sv1 = (SV *)av;
1681	}	1289	}
1682		1290
1683	void	1291	void
1684	errno (aio_req grp, int errorno = errno)	1292	errno (aio_req grp, int errorno = errno)
1685	CODE:	1293	CODE:
1686	grp->errorno = errorno;	1294	grp->errorno = errorno;
1687		1295
1688	void	1296	void
1689	limit (aio_req grp, int limit)	1297	limit (aio_req grp, int limit)
1690	CODE:	1298	CODE:
1691	grp->fd2 = limit;	1299	eio_grp_limit (grp, limit);
1692	aio_grp_feed (grp);
1693		1300
1694	void	1301	void
1695	feed (aio_req grp, SV *callback=&PL_sv_undef)	1302	feed (aio_req grp, SV *callback=&PL_sv_undef)
1696	CODE:	1303	CODE:
1697	{	1304	{
1698	SvREFCNT_dec (grp->fh2);	1305	SvREFCNT_dec (grp->sv2);
1699	grp->fh2 = newSVsv (callback);	1306	grp->sv2 = newSVsv (callback);
		1307	grp->feed = aio_grp_feed;
1700		1308
1701	if (grp->fd2 <= 0)	1309	if (grp->int2 <= 0)
1702	grp->fd2 = 2;	1310	grp->int2 = 2;
1703		1311
1704	aio_grp_feed (grp);	1312	eio_grp_limit (grp, grp->int2);
1705	}	1313	}
1706		1314

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