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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.82 by root, Fri Oct 27 20:11:58 2006 UTC vs.
Revision 1.160 by root, Thu Jan 7 18:25:51 2010 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>
		16	#include <sys/statvfs.h>
27	#include <limits.h>	17	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	18	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	19	#include <sched.h>
32		20
33	#if HAVE_SENDFILE	21	/* perl namespace pollution */
34	# if __linux	22	#undef VERSION
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>
43	# else
44	# error sendfile support requested but not available
45	# endif
46	#endif
47		23
48	/* used for struct dirent, AIX doesn't provide it */	24	#ifdef _WIN32
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif
52		25
53	#ifndef PTHREAD_STACK_MIN	26	# define EIO_STRUCT_DIRENT Direntry_t
54	/* care for broken platforms, e.g. windows */	27	# undef malloc
55	# define PTHREAD_STACK_MIN 16384	28	# undef free
56	#endif
57		29
58	#if __ia64	30	// perl overrides all those nice win32 functions
59	# define STACKSIZE 65536	31	# undef open
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	32	# undef read
61	# define STACKSIZE PTHREAD_STACK_MIN	33	# undef write
		34	# undef send
		35	# undef recv
		36	# undef stat
		37	# undef fstat
		38	# define lstat stat
		39	# undef truncate
		40	# undef ftruncate
		41	# undef open
		42	# undef close
		43	# undef unlink
		44	# undef rmdir
		45	# undef rename
		46	# undef lseek
		47
		48	# define chown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchown(a,b,c) (errno = ENOSYS, -1)
		50	# define fchmod(a,b) (errno = ENOSYS, -1)
		51	# define symlink(a,b) (errno = ENOSYS, -1)
		52	# define readlink(a,b,c) (errno = ENOSYS, -1)
		53	# define mknod(a,b,c) (errno = ENOSYS, -1)
		54	# define truncate(a,b) (errno = ENOSYS, -1)
		55	# define ftruncate(fd,o) chsize ((fd), (o))
		56	# define fsync(fd) _commit (fd)
		57	# define opendir(fd) (errno = ENOSYS, 0)
		58	# define readdir(fd) (errno = ENOSYS, -1)
		59	# define closedir(fd) (errno = ENOSYS, -1)
		60	# define mkdir(a,b) mkdir (a)
		61
62	#else	62	#else
63	# define STACKSIZE 16384
64	#endif
65		63
66	/* wether word reads are potentially non-atomic.	64	# include <sys/time.h>
67	* this is conservatice, likely most arches this runs	65	# include <sys/select.h>
68	* on have atomic word read/writes.	66	# include <unistd.h>
69	*/	67	# include <utime.h>
70	#ifndef WORDREAD_UNSAFE	68	# include <signal.h>
71	# if __i386 || __x86_64	69	# define EIO_STRUCT_DIRENT struct dirent
72	# define WORDREAD_UNSAFE 0	70
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	71	#endif
76	#endif
77		72
78	/* buffer size for various temporary buffers */	73	/* perl stupidly overrides readdir and maybe others */
79	#define AIO_BUFSIZE 65536	74	/* with thread-unsafe versions, imagine that :( */
		75	#undef readdir
		76	#undef opendir
		77	#undef closedir
80		78
81	#define dBUF \	79	#define EIO_STRUCT_STAT Stat_t
82	char *aio_buf; \	80
83	LOCK (wrklock); \	81	/* use NV for 32 bit perls as it allows larger offsets */
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	82	#if IVSIZE >= 8
85	UNLOCK (wrklock); \	83	# define VAL64 IV
86	if (!aio_buf) \	84	# define SvVAL64 SvIV
87	return -1;	85	# define newSVval64 newSViv
		86	#else
		87	# define VAL64 NV
		88	# define SvVAL64 SvNV
		89	# define newSVval64 newSVnv
		90	#endif
		91
		92	/*****************************************************************************/
		93
		94	#if __GNUC__ >= 3
		95	# define expect(expr,value) __builtin_expect ((expr),(value))
		96	#else
		97	# define expect(expr,value) (expr)
		98	#endif
		99
		100	#define expect_false(expr) expect ((expr) != 0, 0)
		101	#define expect_true(expr) expect ((expr) != 0, 1)
		102
		103	/*****************************************************************************/
		104
		105	typedef SV SV8; /* byte-sv, used for argument-checking */
		106	typedef int aio_rfd; /* read file desriptor */
		107	typedef int aio_wfd; /* write file descriptor */
		108
		109	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		110
		111	#define EIO_REQ_MEMBERS \
		112	SV *callback; \
		113	SV *sv1, *sv2; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/eio.h"
		120
		121	#ifndef POSIX_FADV_NORMAL
		122	# define POSIX_FADV_NORMAL 0
		123	# define NO_FADVISE 1
		124	#endif
		125
		126	#ifndef POSIX_FADV_SEQUENTIAL
		127	# define POSIX_FADV_SEQUENTIAL 0
		128	#endif
		129
		130	#ifndef POSIX_FADV_RANDOM
		131	# define POSIX_FADV_RANDOM 0
		132	#endif
		133
		134	#ifndef POSIX_FADV_NOREUSE
		135	# define POSIX_FADV_NOREUSE 0
		136	#endif
		137
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141
		142	#ifndef POSIX_FADV_DONTNEED
		143	# define POSIX_FADV_DONTNEED 0
		144	#endif
		145
		146	#ifndef ST_NODEV
		147	# define ST_NODEV 0
		148	#endif
		149
		150	#ifndef ST_NOEXEC
		151	# define ST_NOEXEC 0
		152	#endif
		153
		154	#ifndef ST_SYNCHRONOUS
		155	# define ST_SYNCHRONOUS 0
		156	#endif
		157
		158	#ifndef ST_MANDLOCK
		159	# define ST_MANDLOCK 0
		160	#endif
		161
		162	#ifndef ST_WRITE
		163	# define ST_WRITE 0
		164	#endif
		165
		166	#ifndef ST_APPEND
		167	# define ST_APPEND 0
		168	#endif
		169
		170	#ifndef ST_IMMUTABLE
		171	# define ST_IMMUTABLE 0
		172	#endif
		173
		174	#ifndef ST_NOATIME
		175	# define ST_NOATIME 0
		176	#endif
		177
		178	#ifndef ST_NODIRATIME
		179	# define ST_NODIRATIME 0
		180	#endif
		181
		182	#ifndef ST_RELATIME
		183	# define ST_RELATIME 0
		184	#endif
		185
		186	static int req_invoke (eio_req *req);
		187	#define EIO_FINISH(req) req_invoke (req)
		188	static void req_destroy (eio_req *grp);
		189	#define EIO_DESTROY(req) req_destroy (req)
88		190
89	enum {	191	enum {
90	REQ_QUIT,	192	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
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	};	193	};
102		194
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	195	#include "libeio/eio.c"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		196
106	typedef struct aio_cb
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;
111	SV *fh, *fh2;
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;
119	int type;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123
124	unsigned char flags;
125	unsigned char pri;
126
127	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;	197	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	198	typedef eio_req *aio_req_ornot;
137		199
138	enum {	200	static SV *on_next_submit;
139	PRI_MIN = -4,	201	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	202	static int max_outstanding;
141		203
142	DEFAULT_PRI = 0,	204	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		205
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);	206	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	207	static void req_cancel (aio_req req);
297		208
		209	static void want_poll (void)
		210	{
		211	/* write a dummy byte to the pipe so fh becomes ready */
		212	s_epipe_signal (&respipe);
		213	}
		214
		215	static void done_poll (void)
		216	{
		217	/* read any signals sent by the worker threads */
		218	s_epipe_drain (&respipe);
		219	}
		220
298	/* must be called at most once */	221	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	222	static SV *req_sv (aio_req req, HV *stash)
300	{	223	{
301	if (!req->self)	224	if (!req->self)
302	{	225	{
303	req->self = (SV *)newHV ();	226	req->self = (SV *)newHV ();
304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	227	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305	}	228	}
306		229
307	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	230	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308	}	231	}
309		232
310	static aio_req SvAIO_REQ (SV *sv)	233	static aio_req SvAIO_REQ (SV *sv)
311	{	234	{
312	MAGIC *mg;	235	MAGIC *mg;
313		236
314	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	237	if (!SvROK (sv)
		238	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		239	&& SvSTASH (SvRV (sv)) != aio_req_stash
		240	&& !sv_derived_from (sv, "IO::AIO::REQ")))
315	croak ("object of class " AIO_REQ_KLASS " expected");	241	croak ("object of class IO::AIO::REQ expected");
316		242
317	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	243	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318		244
319	return mg ? (aio_req)mg->mg_ptr : 0;	245	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	246	}
321		247
322	static void aio_grp_feed (aio_req grp)	248	static void aio_grp_feed (aio_req grp)
323	{	249	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	250	if (grp->sv2 && SvOK (grp->sv2))
325	{	251	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	252	dSP;
331		253
332	ENTER;	254	ENTER;
333	SAVETMPS;	255	SAVETMPS;
334	PUSHMARK (SP);	256	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	257	XPUSHs (req_sv (grp, aio_grp_stash));
336	PUTBACK;	258	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	259	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	260	SPAGAIN;
339	FREETMPS;	261	FREETMPS;
340	LEAVE;	262	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	}	263	}
351	}	264	}
352		265
353	static void aio_grp_dec (aio_req grp)	266	static void req_submit (eio_req *req)
354	{	267	{
355	--grp->length;	268	eio_submit (req);
356		269
357	/* call feeder, if applicable */	270	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	271	{
363	req_invoke (grp);	272	dSP;
364	req_free (grp);	273	SV *cb = sv_2mortal (on_next_submit);
		274
		275	on_next_submit = 0;
		276
		277	PUSHMARK (SP);
		278	PUTBACK;
		279	call_sv (cb, G_DISCARD | G_EVAL);
365	}	280	}
366	}	281	}
367		282
368	static void req_invoke (aio_req req)	283	static int req_invoke (eio_req *req)
369	{	284	{
370	dSP;	285	dSP;
371		286
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	287	if (req->flags & FLAG_SV2_RO_OFF)
		288	SvREADONLY_off (req->sv2);
		289
		290	if (!EIO_CANCELLED (req) && req->callback)
373	{	291	{
374	ENTER;	292	ENTER;
375	SAVETMPS;	293	SAVETMPS;
376	PUSHMARK (SP);	294	PUSHMARK (SP);
377	EXTEND (SP, 1);	295	EXTEND (SP, 1);
378		296
379	switch (req->type)	297	switch (req->type)
380	{	298	{
381	case REQ_READDIR:	299	case EIO_READDIR:
382	{	300	{
383	SV *rv = &PL_sv_undef;	301	SV *rv = &PL_sv_undef;
384		302
385	if (req->result >= 0)	303	if (req->result >= 0)
386	{	304	{
387	int i;	305	int i;
388	char *buf = req->data2ptr;	306	char *names = (char *)req->ptr2;
		307	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	308	AV *av = newAV ();
390		309
391	av_extend (av, req->result - 1);	310	av_extend (av, req->result - 1);
392		311
393	for (i = 0; i < req->result; ++i)	312	for (i = 0; i < req->result; ++i)
394	{	313	{
395	SV *sv = newSVpv (buf, 0);	314	if (req->int1 & EIO_READDIR_DENTS)
		315	{
		316	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		317
		318	if (req->int1 & EIO_READDIR_CUSTOM2)
		319	{
		320	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		321	AV *avent = newAV ();
		322
		323	av_extend (avent, 2);
		324
		325	if (!sv_type [ent->type])
		326	{
		327	sv_type [ent->type] = newSViv (ent->type);
		328	SvREADONLY_on (sv_type [ent->type]);
		329	}
		330
		331	av_store (avent, 0, namesv);
		332	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		333	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		334
		335	av_store (av, i, newRV_noinc ((SV *)avent));
		336	}
		337	else
397	av_store (av, i, sv);	338	av_store (av, i, namesv);
		339
		340	++ent;
		341	}
		342	else
		343	{
		344	SV *name = newSVpv (names, 0);
		345	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	346	names += SvCUR (name) + 1;
		347	}
399	}	348	}
400		349
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	350	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	351	}
403		352
404	PUSHs (rv);	353	PUSHs (rv);
		354
		355	if (req->int1 & EIO_READDIR_CUSTOM1)
		356	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405	}	357	}
406	break;	358	break;
407		359
408	case REQ_OPEN:	360	case EIO_OPEN:
409	{	361	{
410	/* convert fd to fh */	362	/* convert fd to fh */
411	SV *fh;	363	SV *fh = &PL_sv_undef;
412		364
413	PUSHs (sv_2mortal (newSViv (req->result)));	365	if (req->result >= 0)
414	PUTBACK;	366	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	367	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	368	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		369	char sym [64];
		370	int symlen;
		371
		372	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		373	gv_init (gv, aio_stash, sym, symlen, 0);
417		374
418	fh = SvREFCNT_inc (POPs);	375	symlen = snprintf (
		376	sym,
		377	sizeof (sym),
		378	"%s&=%d",
		379	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		380	(int)req->result
		381	);
419		382
		383	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		384	fh = (SV *)gv;
		385	}
		386
420	PUSHMARK (SP);	387	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	388	}
423	break;	389	break;
424		390
		391	case EIO_STATVFS:
		392	case EIO_FSTATVFS:
		393	{
		394	SV *rv = &PL_sv_undef;
		395
		396	if (req->result >= 0)
		397	{
		398	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		399	HV *hv = newHV ();
		400
		401	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		402
		403	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		404	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		405	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		406	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		407	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		408	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		409	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		410	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		411	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		412	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		413	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		414	}
		415
		416	PUSHs (rv);
		417	}
		418
		419	break;
		420
425	case REQ_GROUP:	421	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	422	req->int1 = 2; /* mark group as finished */
427		423
428	if (req->data)	424	if (req->sv1)
429	{	425	{
430	int i;	426	int i;
431	AV *av = (AV *)req->data;	427	AV *av = (AV *)req->sv1;
432		428
433	EXTEND (SP, AvFILL (av) + 1);	429	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	430	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	431	PUSHs (*av_fetch (av, i, 0));
436	}	432	}
437	break;	433	break;
438		434
439	case REQ_NOP:	435	case EIO_NOP:
440	case REQ_BUSY:	436	case EIO_BUSY:
441	break;	437	break;
		438
		439	case EIO_READLINK:
		440	if (req->result > 0)
		441	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		442	break;
		443
		444	case EIO_STAT:
		445	case EIO_LSTAT:
		446	case EIO_FSTAT:
		447	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		448	PL_laststatval = req->result;
		449	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		450	PUSHs (sv_2mortal (newSViv (req->result)));
		451	break;
		452
		453	case EIO_READ:
		454	{
		455	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		456	*SvEND (req->sv2) = 0;
		457	SvPOK_only (req->sv2);
		458	SvSETMAGIC (req->sv2);
		459	PUSHs (sv_2mortal (newSViv (req->result)));
		460	}
		461	break;
		462
		463	case EIO_DUP2:
		464	if (req->result > 0)
		465	req->result = 0;
		466	/* FALLTHROUGH */
442		467
443	default:	468	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	469	PUSHs (sv_2mortal (newSViv (req->result)));
445	break;	470	break;
446	}	471	}
447		472
448	errno = req->errorno;	473	errno = req->errorno;
449		474
450	PUTBACK;	475	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	476	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	477	SPAGAIN;
453		478
454	FREETMPS;	479	FREETMPS;
455	LEAVE;	480	LEAVE;
		481
		482	PUTBACK;
456	}	483	}
457		484
458	if (req->grp)	485	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	}	486	}
478		487
479	static void req_free (aio_req req)	488	static void req_destroy (aio_req req)
480	{	489	{
481	if (req->self)	490	if (req->self)
482	{	491	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	492	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	493	SvREFCNT_dec (req->self);
485	}	494	}
486		495
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	496	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	497	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	498	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		499
496	Safefree (req);	500	Safefree (req);
497	}	501	}
498		502
499	static void req_cancel_subs (aio_req grp)	503	static void req_cancel_subs (aio_req grp)
500	{	504	{
501	aio_req sub;	505	aio_req sub;
502		506
503	if (grp->type != REQ_GROUP)	507	if (grp->type != EIO_GROUP)
504	return;	508	return;
505		509
506	SvREFCNT_dec (grp->fh2);	510	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	511	grp->sv2 = 0;
508		512
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	513	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	514	}
512		515
513	static void req_cancel (aio_req req)	516	static void
		517	create_respipe (void)
514	{	518	{
515	req->flags |= FLAG_CANCELLED;	519	if (s_epipe_renew (&respipe))
516		520	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	521	}
519		522
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	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	523	static void poll_wait (void)
638	{	524	{
639	fd_set rfd;
640
641	while (nreqs)	525	while (eio_nreqs ())
642	{	526	{
643	int size;	527	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	528
		529	X_LOCK (reslock);
645	size = res_queue.size;	530	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	531	X_UNLOCK (reslock);
647		532
648	if (size)	533	if (size)
649	return;	534	return;
650		535
651	maybe_start_thread ();	536	etp_maybe_start_thread ();
652		537
653	FD_ZERO(&rfd);	538	s_epipe_wait (&respipe);
654	FD_SET(respipe [0], &rfd);
655
656	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	539	}
658	}	540	}
659		541
660	static int poll_cb (int max)	542	static int poll_cb (void)
661	{	543	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	544	for (;;)
668	{	545	{
669	while (max <= 0 || count < max)	546	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		547
673	LOCK (reslock);	548	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	549	croak (0);
		550
		551	if (!max_outstanding || max_outstanding > eio_nreqs ())
		552	return res;
726		553
727	poll_wait ();	554	poll_wait ();
728
729	max = 0;
730	}	555	}
731
732	return count;
733	}
734
735	static void create_pipe ()
736	{
737	if (pipe (respipe))
738	croak ("unable to initialize result pipe");
739
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}
746
747	/*****************************************************************************/
748	/* work around various missing functions */
749
750	#if !HAVE_PREADWRITE
751	# define pread aio_pread
752	# define pwrite aio_pwrite
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (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 = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;
854
855	#if HAVE_SENDFILE
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858
859	# elif __freebsd
860	/*
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868	if (res < 0 && sbytes)
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897
898	if (res < 0
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900	#if __solaris
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908
909	res = 0;
910
911	while (count)
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917	if (cnt <= 0)
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922
923	cnt = write (ofd, aio_buf, cnt);
924
925	if (cnt <= 0)
926	{
927	if (cnt && !res) res = -1;
928	break;
929	}
930
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;
938	}
939
940	/* read a full directory */
941	static void scandir_ (aio_req req, worker *self)
942	{
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000
1001	/*****************************************************************************/
1002
1003	static void *aio_proc (void *thr_arg)
1004	{
1005	aio_req req;
1006	worker *self = (worker *)thr_arg;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1049
1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1051	case REQ_FSYNC: req->result = fsync (req->fd); break;
1052	case REQ_READDIR: scandir_ (req, self); break;
1053
1054	case REQ_BUSY:
1055	{
1056	struct timeval tv;
1057
1058	tv.tv_sec = req->fd;
1059	tv.tv_usec = req->fd2;
1060
1061	req->result = select (0, 0, 0, 0, &tv);
1062	}
1063
1064	case REQ_GROUP:
1065	case REQ_NOP:
1066	break;
1067
1068	case REQ_QUIT:
1069	LOCK (wrklock);
1070	worker_free (self);
1071	--started;
1072	UNLOCK (wrklock);
1073	return 0;
1074
1075	default:
1076	req->result = ENOSYS;
1077	break;
1078	}
1079
1080	req->errorno = errno;
1081
1082	LOCK (reslock);
1083
1084	++npending;
1085
1086	if (!reqq_push (&res_queue, req))
1087	/* write a dummy byte to the pipe so fh becomes ready */
1088	write (respipe [1], &respipe, 1);
1089
1090	self->req = 0;
1091	worker_clear (self);
1092
1093	UNLOCK (reslock);
1094	}
1095	}
1096
1097	/*****************************************************************************/
1098
1099	static void atfork_prepare (void)
1100	{
1101	LOCK (wrklock);
1102	LOCK (reqlock);
1103	LOCK (reslock);
1104	#if !HAVE_PREADWRITE
1105	LOCK (preadwritelock);
1106	#endif
1107	#if !HAVE_READDIR_R
1108	LOCK (readdirlock);
1109	#endif
1110	}
1111
1112	static void atfork_parent (void)
1113	{
1114	#if !HAVE_READDIR_R
1115	UNLOCK (readdirlock);
1116	#endif
1117	#if !HAVE_PREADWRITE
1118	UNLOCK (preadwritelock);
1119	#endif
1120	UNLOCK (reslock);
1121	UNLOCK (reqlock);
1122	UNLOCK (wrklock);
1123	}	556	}
1124		557
1125	static void atfork_child (void)	558	static void atfork_child (void)
1126	{	559	{
1127	aio_req prv;
1128
1129	while (prv = reqq_shift (&req_queue))
1130	req_free (prv);
1131
1132	while (prv = reqq_shift (&res_queue))
1133	req_free (prv);
1134
1135	while (wrk_first.next != &wrk_first)
1136	{
1137	worker *wrk = wrk_first.next;
1138
1139	if (wrk->req)
1140	req_free (wrk->req);
1141
1142	worker_clear (wrk);
1143	worker_free (wrk);
1144	}
1145
1146	started = 0;
1147	nreqs = 0;
1148
1149	close (respipe [0]);
1150	close (respipe [1]);
1151	create_pipe ();	560	create_respipe ();
		561	}
1152		562
1153	atfork_parent ();	563	static SV *
		564	get_cb (SV *cb_sv)
		565	{
		566	SvGETMAGIC (cb_sv);
		567	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1154	}	568	}
1155		569
1156	#define dREQ \	570	#define dREQ \
		571	SV *cb_cv; \
1157	aio_req req; \	572	aio_req req; \
1158	int req_pri = next_pri; \	573	int req_pri = next_pri; \
1159	next_pri = DEFAULT_PRI + PRI_BIAS; \	574	next_pri = EIO_PRI_DEFAULT; \
1160	\	575	\
1161	if (SvOK (callback) && !SvROK (callback)) \	576	cb_cv = get_cb (callback); \
1162	croak ("callback must be undef or of reference type"); \
1163	\	577	\
1164	Newz (0, req, 1, aio_cb); \	578	Newz (0, req, 1, eio_req); \
1165	if (!req) \	579	if (!req) \
1166	croak ("out of memory during aio_req allocation"); \	580	croak ("out of memory during eio_req allocation"); \
1167	\	581	\
1168	req->callback = newSVsv (callback); \	582	req->callback = SvREFCNT_inc (cb_cv); \
1169	req->pri = req_pri	583	req->pri = req_pri
1170		584
1171	#define REQ_SEND \	585	#define REQ_SEND \
		586	PUTBACK; \
1172	req_send (req); \	587	req_submit (req); \
		588	SPAGAIN; \
1173	\	589	\
1174	if (GIMME_V != G_VOID) \	590	if (GIMME_V != G_VOID) \
1175	XPUSHs (req_sv (req, AIO_REQ_KLASS));	591	XPUSHs (req_sv (req, aio_req_stash));
1176		592
1177	MODULE = IO::AIO PACKAGE = IO::AIO	593	MODULE = IO::AIO PACKAGE = IO::AIO
1178		594
1179	PROTOTYPES: ENABLE	595	PROTOTYPES: ENABLE
1180		596
1181	BOOT:	597	BOOT:
1182	{	598	{
		599	static const struct {
		600	const char *name;
		601	IV iv;
		602	} *civ, const_iv[] = {
		603	# define const_iv(name, value) { # name, (IV) value },
		604	# define const_eio(name) { # name, (IV) EIO_ ## name },
		605	const_iv (EXDEV , EXDEV)
		606	const_iv (ENOSYS , ENOSYS)
		607	const_iv (O_RDONLY, O_RDONLY)
		608	const_iv (O_WRONLY, O_WRONLY)
		609	const_iv (O_CREAT , O_CREAT)
		610	const_iv (O_TRUNC , O_TRUNC)
		611	#ifndef _WIN32
		612	const_iv (S_IFIFO , S_IFIFO)
		613	#endif
		614	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		615	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		616	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		617	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		618	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		619	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		620
		621	const_iv (ST_RDONLY , ST_RDONLY)
		622	const_iv (ST_NOSUID , ST_NOSUID)
		623	const_iv (ST_NODEV , ST_NODEV)
		624	const_iv (ST_NOEXEC , ST_NOEXEC)
		625	const_iv (ST_SYNCHRONOUS , ST_SYNCHRONOUS)
		626	const_iv (ST_MANDLOCK , ST_MANDLOCK)
		627	const_iv (ST_WRITE , ST_WRITE)
		628	const_iv (ST_APPEND , ST_APPEND)
		629	const_iv (ST_IMMUTABLE , ST_IMMUTABLE)
		630	const_iv (ST_NOATIME , ST_NOATIME)
		631	const_iv (ST_NODIRATIME , ST_NODIRATIME)
		632	const_iv (ST_RELATIME , ST_RELATIME)
		633
		634	const_eio (MS_ASYNC)
		635	const_eio (MS_INVALIDATE)
		636	const_eio (MS_SYNC)
		637
		638	const_eio (MT_MODIFY)
		639
		640	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		641	const_eio (SYNC_FILE_RANGE_WRITE)
		642	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		643
		644	const_eio (READDIR_DENTS)
		645	const_eio (READDIR_DIRS_FIRST)
		646	const_eio (READDIR_STAT_ORDER)
		647	const_eio (READDIR_FOUND_UNKNOWN)
		648
		649	const_eio (DT_UNKNOWN)
		650	const_eio (DT_FIFO)
		651	const_eio (DT_CHR)
		652	const_eio (DT_DIR)
		653	const_eio (DT_BLK)
		654	const_eio (DT_REG)
		655	const_eio (DT_LNK)
		656	const_eio (DT_SOCK)
		657	const_eio (DT_WHT)
		658	};
		659
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	660	aio_stash = gv_stashpv ("IO::AIO" , 1);
		661	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		662	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1184		663
1185	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	664	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1186	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	665	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1187	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1188	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1189	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1190	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1191		666
1192	create_pipe ();	667	create_respipe ();
1193	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1194		668
1195	start_thread ();	669	if (eio_init (want_poll, done_poll) < 0)
		670	croak ("IO::AIO: unable to initialise eio library");
		671
		672	/* atfork child called in fifo order, so before eio's handler */
		673	X_THREAD_ATFORK (0, 0, atfork_child);
1196	}	674	}
		675
		676	void
		677	max_poll_reqs (int nreqs)
		678	PROTOTYPE: $
		679	CODE:
		680	eio_set_max_poll_reqs (nreqs);
		681
		682	void
		683	max_poll_time (double nseconds)
		684	PROTOTYPE: $
		685	CODE:
		686	eio_set_max_poll_time (nseconds);
1197		687
1198	void	688	void
1199	min_parallel (int nthreads)	689	min_parallel (int nthreads)
1200	PROTOTYPE: $	690	PROTOTYPE: $
		691	CODE:
		692	eio_set_min_parallel (nthreads);
1201		693
1202	void	694	void
1203	max_parallel (int nthreads)	695	max_parallel (int nthreads)
1204	PROTOTYPE: $	696	PROTOTYPE: $
		697	CODE:
		698	eio_set_max_parallel (nthreads);
1205		699
1206	int	700	void
		701	max_idle (int nthreads)
		702	PROTOTYPE: $
		703	CODE:
		704	eio_set_max_idle (nthreads);
		705
		706	void
1207	max_outstanding (int maxreqs)	707	max_outstanding (int maxreqs)
1208	PROTOTYPE: $	708	PROTOTYPE: $
1209	CODE:	709	CODE:
1210	RETVAL = max_outstanding;
1211	max_outstanding = maxreqs;	710	max_outstanding = maxreqs;
1212	OUTPUT:
1213	RETVAL
1214		711
1215	void	712	void
1216	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	713	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1217	SV * pathname
1218	int flags
1219	int mode
1220	SV * callback
1221	PROTOTYPE: $$$;$	714	PROTOTYPE: $$$;$
1222	PPCODE:	715	PPCODE:
1223	{	716	{
1224	dREQ;	717	dREQ;
1225		718
1226	req->type = REQ_OPEN;	719	req->type = EIO_OPEN;
1227	req->data = newSVsv (pathname);	720	req->sv1 = newSVsv (pathname);
1228	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1229	req->fd = flags;	722	req->int1 = flags;
1230	req->mode = mode;	723	req->int2 = mode;
1231		724
1232	REQ_SEND;	725	REQ_SEND;
1233	}	726	}
1234		727
1235	void	728	void
1236	aio_close (fh,callback=&PL_sv_undef)	729	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1237	SV * fh
1238	SV * callback
1239	PROTOTYPE: $;$	730	PROTOTYPE: $;$
1240	ALIAS:	731	ALIAS:
1241	aio_close = REQ_CLOSE
1242	aio_fsync = REQ_FSYNC	732	aio_fsync = EIO_FSYNC
1243	aio_fdatasync = REQ_FDATASYNC	733	aio_fdatasync = EIO_FDATASYNC
1244	PPCODE:	734	PPCODE:
1245	{	735	{
		736	int fd = s_fileno_croak (fh, 0);
1246	dREQ;	737	dREQ;
1247		738
1248	req->type = ix;	739	req->type = ix;
1249	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	741	req->int1 = fd;
1251		742
1252	REQ_SEND (req);	743	REQ_SEND (req);
1253	}	744	}
1254		745
1255	void	746	void
		747	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		748	PROTOTYPE: $$$$;$
		749	PPCODE:
		750	{
		751	int fd = s_fileno_croak (fh, 0);
		752	dREQ;
		753
		754	req->type = EIO_SYNC_FILE_RANGE;
		755	req->sv1 = newSVsv (fh);
		756	req->int1 = fd;
		757	req->offs = offset;
		758	req->size = nbytes;
		759	req->int2 = flags;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
		765	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		766	PROTOTYPE: $;$
		767	PPCODE:
		768	{
		769	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		770	int fd = s_fileno_croak (fh, 0);
		771	dREQ;
		772
		773	if (close_pipe < 0)
		774	{
		775	int pipefd [2];
		776
		777	if (pipe (pipefd) < 0
		778	|| close (pipefd [1]) < 0
		779	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		780	abort (); /*D*/
		781
		782	close_pipe = pipefd [0];
		783	}
		784
		785	req->type = EIO_DUP2;
		786	req->int1 = close_pipe;
		787	req->sv2 = newSVsv (fh);
		788	req->int2 = fd;
		789
		790	REQ_SEND (req);
		791	}
		792
		793	void
1256	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	794	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1257	SV * fh
1258	UV offset
1259	UV length
1260	SV * data
1261	UV dataoffset
1262	SV * callback
1263	ALIAS:	795	ALIAS:
1264	aio_read = REQ_READ	796	aio_read = EIO_READ
1265	aio_write = REQ_WRITE	797	aio_write = EIO_WRITE
1266	PROTOTYPE: $$$$$;$	798	PROTOTYPE: $$$$$;$
1267	PPCODE:	799	PPCODE:
1268	{	800	{
1269	aio_req req;
1270	STRLEN svlen;	801	STRLEN svlen;
		802	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1271	char *svptr = SvPVbyte (data, svlen);	803	char *svptr = SvPVbyte (data, svlen);
1272		804	UV len = SvUV (length);
1273	SvUPGRADE (data, SVt_PV);
1274	SvPOK_on (data);
1275		805
1276	if (dataoffset < 0)	806	if (dataoffset < 0)
1277	dataoffset += svlen;	807	dataoffset += svlen;
1278		808
1279	if (dataoffset < 0 || dataoffset > svlen)	809	if (dataoffset < 0 || dataoffset > svlen)
1280	croak ("data offset outside of string");	810	croak ("dataoffset outside of data scalar");
1281		811
1282	if (ix == REQ_WRITE)	812	if (ix == EIO_WRITE)
1283	{	813	{
1284	/* write: check length and adjust. */	814	/* write: check length and adjust. */
1285	if (length < 0 || length + dataoffset > svlen)	815	if (!SvOK (length) || len + dataoffset > svlen)
1286	length = svlen - dataoffset;	816	len = svlen - dataoffset;
1287	}	817	}
1288	else	818	else
1289	{	819	{
1290	/* read: grow scalar as necessary */	820	/* read: check type and grow scalar as necessary */
		821	SvUPGRADE (data, SVt_PV);
1291	svptr = SvGROW (data, length + dataoffset);	822	svptr = SvGROW (data, len + dataoffset + 1);
1292	}	823	}
1293
1294	if (length < 0)
1295	croak ("length must not be negative");
1296		824
1297	{	825	{
1298	dREQ;	826	dREQ;
1299		827
1300	req->type = ix;	828	req->type = ix;
1301	req->fh = newSVsv (fh);	829	req->sv1 = newSVsv (fh);
1302	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	830	req->int1 = fd;
1303	: IoOFP (sv_2io (fh)));	831	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1304	req->offset = offset;	832	req->size = len;
1305	req->length = length;
1306	req->data = SvREFCNT_inc (data);	833	req->sv2 = SvREFCNT_inc (data);
1307	req->dataptr = (char *)svptr + dataoffset;	834	req->ptr2 = (char *)svptr + dataoffset;
		835	req->stroffset = dataoffset;
1308		836
1309	if (!SvREADONLY (data))	837	if (!SvREADONLY (data))
1310	{	838	{
1311	SvREADONLY_on (data);	839	SvREADONLY_on (data);
1312	req->data2ptr = (void *)data;	840	req->flags |= FLAG_SV2_RO_OFF;
1313	}	841	}
1314		842
1315	REQ_SEND;	843	REQ_SEND;
1316	}	844	}
1317	}	845	}
1318		846
1319	void	847	void
		848	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		849	PROTOTYPE: $$;$
		850	PPCODE:
		851	{
		852	SV *data;
		853	dREQ;
		854
		855	req->type = EIO_READLINK;
		856	req->sv1 = newSVsv (path);
		857	req->ptr1 = SvPVbyte_nolen (req->sv1);
		858
		859	REQ_SEND;
		860	}
		861
		862	void
1320	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	863	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1321	SV * out_fh
1322	SV * in_fh
1323	UV in_offset
1324	UV length
1325	SV * callback
1326	PROTOTYPE: $$$$;$	864	PROTOTYPE: $$$$;$
1327	PPCODE:	865	PPCODE:
1328	{	866	{
		867	int ifd = s_fileno_croak (in_fh , 0);
		868	int ofd = s_fileno_croak (out_fh, 1);
1329	dREQ;	869	dREQ;
1330		870
1331	req->type = REQ_SENDFILE;	871	req->type = EIO_SENDFILE;
1332	req->fh = newSVsv (out_fh);	872	req->sv1 = newSVsv (out_fh);
1333	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	873	req->int1 = ofd;
1334	req->fh2 = newSVsv (in_fh);	874	req->sv2 = newSVsv (in_fh);
1335	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	875	req->int2 = ifd;
1336	req->offset = in_offset;	876	req->offs = in_offset;
1337	req->length = length;	877	req->size = length;
1338		878
1339	REQ_SEND;	879	REQ_SEND;
1340	}	880	}
1341		881
1342	void	882	void
1343	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	883	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1344	SV * fh
1345	UV offset
1346	IV length
1347	SV * callback
1348	PROTOTYPE: $$$;$	884	PROTOTYPE: $$$;$
1349	PPCODE:	885	PPCODE:
1350	{	886	{
		887	int fd = s_fileno_croak (fh, 0);
1351	dREQ;	888	dREQ;
1352		889
1353	req->type = REQ_READAHEAD;	890	req->type = EIO_READAHEAD;
1354	req->fh = newSVsv (fh);	891	req->sv1 = newSVsv (fh);
1355	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	892	req->int1 = fd;
1356	req->offset = offset;	893	req->offs = offset;
1357	req->length = length;	894	req->size = length;
1358		895
1359	REQ_SEND;	896	REQ_SEND;
1360	}	897	}
1361		898
1362	void	899	void
1363	aio_stat (fh_or_path,callback=&PL_sv_undef)	900	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1364	SV * fh_or_path
1365	SV * callback
1366	ALIAS:	901	ALIAS:
1367	aio_stat = REQ_STAT	902	aio_stat = EIO_STAT
1368	aio_lstat = REQ_LSTAT	903	aio_lstat = EIO_LSTAT
		904	aio_statvfs = EIO_STATVFS
1369	PPCODE:	905	PPCODE:
1370	{	906	{
1371	dREQ;	907	dREQ;
1372		908
1373	New (0, req->statdata, 1, Stat_t);	909	req->sv1 = newSVsv (fh_or_path);
1374	if (!req->statdata)
1375	{
1376	req_free (req);
1377	croak ("out of memory during aio_req->statdata allocation");
1378	}
1379		910
1380	if (SvPOK (fh_or_path))	911	if (SvPOK (req->sv1))
1381	{	912	{
1382	req->type = ix;	913	req->type = ix;
1383	req->data = newSVsv (fh_or_path);
1384	req->dataptr = SvPVbyte_nolen (req->data);	914	req->ptr1 = SvPVbyte_nolen (req->sv1);
1385	}	915	}
1386	else	916	else
1387	{	917	{
1388	req->type = REQ_FSTAT;	918	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1389	req->fh = newSVsv (fh_or_path);
1390	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	919	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1391	}	920	}
1392		921
1393	REQ_SEND;	922	REQ_SEND;
1394	}	923	}
1395		924
1396	void	925	void
		926	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		927	PPCODE:
		928	{
		929	dREQ;
		930
		931	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		932	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		933	req->sv1 = newSVsv (fh_or_path);
		934
		935	if (SvPOK (req->sv1))
		936	{
		937	req->type = EIO_UTIME;
		938	req->ptr1 = SvPVbyte_nolen (req->sv1);
		939	}
		940	else
		941	{
		942	req->type = EIO_FUTIME;
		943	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		944	}
		945
		946	REQ_SEND;
		947	}
		948
		949	void
		950	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		951	PPCODE:
		952	{
		953	dREQ;
		954
		955	req->sv1 = newSVsv (fh_or_path);
		956	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		957
		958	if (SvPOK (req->sv1))
		959	{
		960	req->type = EIO_TRUNCATE;
		961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962	}
		963	else
		964	{
		965	req->type = EIO_FTRUNCATE;
		966	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		967	}
		968
		969	REQ_SEND;
		970	}
		971
		972	void
		973	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		974	ALIAS:
		975	aio_chmod = EIO_CHMOD
		976	aio_mkdir = EIO_MKDIR
		977	PPCODE:
		978	{
		979	dREQ;
		980
		981	req->int2 = mode;
		982	req->sv1 = newSVsv (fh_or_path);
		983
		984	if (SvPOK (req->sv1))
		985	{
		986	req->type = ix;
		987	req->ptr1 = SvPVbyte_nolen (req->sv1);
		988	}
		989	else
		990	{
		991	req->type = EIO_FCHMOD;
		992	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		993	}
		994
		995	REQ_SEND;
		996	}
		997
		998	void
		999	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1000	PPCODE:
		1001	{
		1002	dREQ;
		1003
		1004	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1005	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1006	req->sv1 = newSVsv (fh_or_path);
		1007
		1008	if (SvPOK (req->sv1))
		1009	{
		1010	req->type = EIO_CHOWN;
		1011	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1012	}
		1013	else
		1014	{
		1015	req->type = EIO_FCHOWN;
		1016	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1017	}
		1018
		1019	REQ_SEND;
		1020	}
		1021
		1022	void
		1023	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1024	PPCODE:
		1025	{
		1026	dREQ;
		1027
		1028	req->type = EIO_READDIR;
		1029	req->sv1 = newSVsv (pathname);
		1030	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1031	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1032
		1033	if (flags & EIO_READDIR_DENTS)
		1034	req->int1 |= EIO_READDIR_CUSTOM2;
		1035
		1036	REQ_SEND;
		1037	}
		1038
		1039	void
1397	aio_unlink (pathname,callback=&PL_sv_undef)	1040	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1398	SV * pathname
1399	SV * callback
1400	ALIAS:	1041	ALIAS:
1401	aio_unlink = REQ_UNLINK	1042	aio_unlink = EIO_UNLINK
1402	aio_rmdir = REQ_RMDIR	1043	aio_rmdir = EIO_RMDIR
1403	aio_readdir = REQ_READDIR	1044	aio_readdir = EIO_READDIR
1404	PPCODE:	1045	PPCODE:
1405	{	1046	{
1406	dREQ;	1047	dREQ;
1407		1048
1408	req->type = ix;	1049	req->type = ix;
1409	req->data = newSVsv (pathname);	1050	req->sv1 = newSVsv (pathname);
1410	req->dataptr = SvPVbyte_nolen (req->data);	1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
1411		1052
1412	REQ_SEND;	1053	REQ_SEND;
1413	}	1054	}
1414		1055
1415	void	1056	void
1416	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1057	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1417	SV * oldpath
1418	SV * newpath
1419	SV * callback
1420	ALIAS:	1058	ALIAS:
1421	aio_link = REQ_LINK	1059	aio_link = EIO_LINK
1422	aio_symlink = REQ_SYMLINK	1060	aio_symlink = EIO_SYMLINK
1423	aio_rename = REQ_RENAME	1061	aio_rename = EIO_RENAME
1424	PPCODE:	1062	PPCODE:
1425	{	1063	{
1426	dREQ;	1064	dREQ;
1427		1065
1428	req->type = ix;	1066	req->type = ix;
1429	req->fh = newSVsv (oldpath);	1067	req->sv1 = newSVsv (oldpath);
1430	req->data2ptr = SvPVbyte_nolen (req->fh);	1068	req->ptr1 = SvPVbyte_nolen (req->sv1);
1431	req->data = newSVsv (newpath);	1069	req->sv2 = newSVsv (newpath);
1432	req->dataptr = SvPVbyte_nolen (req->data);	1070	req->ptr2 = SvPVbyte_nolen (req->sv2);
1433		1071
1434	REQ_SEND;	1072	REQ_SEND;
1435	}	1073	}
1436		1074
1437	void	1075	void
1438	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1076	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1439	SV * pathname
1440	SV * callback
1441	UV mode
1442	UV dev
1443	PPCODE:	1077	PPCODE:
1444	{	1078	{
1445	dREQ;	1079	dREQ;
1446		1080
1447	req->type = REQ_MKNOD;	1081	req->type = EIO_MKNOD;
1448	req->data = newSVsv (pathname);	1082	req->sv1 = newSVsv (pathname);
1449	req->dataptr = SvPVbyte_nolen (req->data);	1083	req->ptr1 = SvPVbyte_nolen (req->sv1);
1450	req->mode = (mode_t)mode;	1084	req->int2 = (mode_t)mode;
1451	req->offset = dev;	1085	req->offs = dev;
1452		1086
1453	REQ_SEND;	1087	REQ_SEND;
1454	}	1088	}
1455		1089
1456	void	1090	void
		1091	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1092	ALIAS:
		1093	aio_mtouch = EIO_MTOUCH
		1094	aio_msync = EIO_MSYNC
		1095	PROTOTYPE: $$$$;$
		1096	PPCODE:
		1097	{
		1098	STRLEN svlen;
		1099	UV len = SvUV (length);
		1100	char *svptr = SvPVbyte (data, svlen);
		1101
		1102	if (offset < 0)
		1103	offset += svlen;
		1104
		1105	if (offset < 0 || offset > svlen)
		1106	croak ("offset outside of scalar");
		1107
		1108	if (!SvOK (length) || len + offset > svlen)
		1109	len = svlen - offset;
		1110
		1111	{
		1112	dREQ;
		1113
		1114	req->type = ix;
		1115	req->size = len;
		1116	req->sv2 = SvREFCNT_inc (data);
		1117	req->ptr2 = (char *)svptr + offset;
		1118	req->int1 = flags;
		1119
		1120	REQ_SEND;
		1121	}
		1122	}
		1123
		1124	void
1457	aio_busy (delay,callback=&PL_sv_undef)	1125	aio_busy (double delay, SV *callback=&PL_sv_undef)
1458	double delay
1459	SV * callback
1460	PPCODE:	1126	PPCODE:
1461	{	1127	{
1462	dREQ;	1128	dREQ;
1463		1129
1464	req->type = REQ_BUSY;	1130	req->type = EIO_BUSY;
1465	req->fd = delay < 0. ? 0 : delay;	1131	req->nv1 = delay < 0. ? 0. : delay;
1466	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1467		1132
1468	REQ_SEND;	1133	REQ_SEND;
1469	}	1134	}
1470		1135
1471	void	1136	void
1472	aio_group (callback=&PL_sv_undef)	1137	aio_group (SV *callback=&PL_sv_undef)
1473	SV * callback
1474	PROTOTYPE: ;$	1138	PROTOTYPE: ;$
1475	PPCODE:	1139	PPCODE:
1476	{	1140	{
1477	dREQ;	1141	dREQ;
1478		1142
1479	req->type = REQ_GROUP;	1143	req->type = EIO_GROUP;
		1144
1480	req_send (req);	1145	req_submit (req);
1481
1482	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1146	XPUSHs (req_sv (req, aio_grp_stash));
1483	}	1147	}
1484		1148
1485	void	1149	void
1486	aio_nop (callback=&PL_sv_undef)	1150	aio_nop (SV *callback=&PL_sv_undef)
1487	SV * callback	1151	ALIAS:
		1152	aio_nop = EIO_NOP
		1153	aio_sync = EIO_SYNC
1488	PPCODE:	1154	PPCODE:
1489	{	1155	{
1490	dREQ;	1156	dREQ;
1491		1157
1492	req->type = REQ_NOP;	1158	req->type = ix;
1493		1159
1494	REQ_SEND;	1160	REQ_SEND;
1495	}	1161	}
1496		1162
1497	int	1163	int
1498	aioreq_pri (int pri = 0)	1164	aioreq_pri (int pri = 0)
1499	PROTOTYPE: ;$	1165	PROTOTYPE: ;$
1500	CODE:	1166	CODE:
1501	RETVAL = next_pri - PRI_BIAS;	1167	RETVAL = next_pri;
1502	if (items > 0)	1168	if (items > 0)
1503	{	1169	{
1504	if (pri < PRI_MIN) pri = PRI_MIN;	1170	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1505	if (pri > PRI_MAX) pri = PRI_MAX;	1171	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1506	next_pri = pri + PRI_BIAS;	1172	next_pri = pri;
1507	}	1173	}
1508	OUTPUT:	1174	OUTPUT:
1509	RETVAL	1175	RETVAL
1510		1176
1511	void	1177	void
1512	aioreq_nice (int nice = 0)	1178	aioreq_nice (int nice = 0)
1513	CODE:	1179	CODE:
1514	nice = next_pri - nice;	1180	nice = next_pri - nice;
1515	if (nice < PRI_MIN) nice = PRI_MIN;	1181	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1516	if (nice > PRI_MAX) nice = PRI_MAX;	1182	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1517	next_pri = nice + PRI_BIAS;	1183	next_pri = nice;
1518		1184
1519	void	1185	void
1520	flush ()	1186	flush ()
1521	PROTOTYPE:	1187	PROTOTYPE:
1522	CODE:	1188	CODE:
1523	while (nreqs)	1189	while (eio_nreqs ())
1524	{	1190	{
1525	poll_wait ();	1191	poll_wait ();
1526	poll_cb (0);	1192	poll_cb ();
1527	}	1193	}
1528		1194
1529	void	1195	int
1530	poll()	1196	poll()
1531	PROTOTYPE:	1197	PROTOTYPE:
1532	CODE:	1198	CODE:
1533	if (nreqs)
1534	{
1535	poll_wait ();	1199	poll_wait ();
1536	poll_cb (0);	1200	RETVAL = poll_cb ();
1537	}	1201	OUTPUT:
		1202	RETVAL
1538		1203
1539	int	1204	int
1540	poll_fileno()	1205	poll_fileno()
1541	PROTOTYPE:	1206	PROTOTYPE:
1542	CODE:	1207	CODE:
1543	RETVAL = respipe [0];	1208	RETVAL = s_epipe_fd (&respipe);
1544	OUTPUT:	1209	OUTPUT:
1545	RETVAL	1210	RETVAL
1546		1211
1547	int	1212	int
1548	poll_cb(...)	1213	poll_cb(...)
1549	PROTOTYPE:	1214	PROTOTYPE:
1550	CODE:	1215	CODE:
1551	RETVAL = poll_cb (0);	1216	RETVAL = poll_cb ();
1552	OUTPUT:	1217	OUTPUT:
1553	RETVAL	1218	RETVAL
1554		1219
1555	int
1556	poll_some(int max = 0)
1557	PROTOTYPE: $
1558	CODE:
1559	RETVAL = poll_cb (max);
1560	OUTPUT:
1561	RETVAL
1562
1563	void	1220	void
1564	poll_wait()	1221	poll_wait()
1565	PROTOTYPE:	1222	PROTOTYPE:
1566	CODE:	1223	CODE:
1567	if (nreqs)
1568	poll_wait ();	1224	poll_wait ();
1569		1225
1570	int	1226	int
1571	nreqs()	1227	nreqs()
1572	PROTOTYPE:	1228	PROTOTYPE:
1573	CODE:	1229	CODE:
1574	RETVAL = nreqs;	1230	RETVAL = eio_nreqs ();
1575	OUTPUT:	1231	OUTPUT:
1576	RETVAL	1232	RETVAL
1577		1233
1578	int	1234	int
1579	nready()	1235	nready()
1580	PROTOTYPE:	1236	PROTOTYPE:
1581	CODE:	1237	CODE:
1582	RETVAL = get_nready ();	1238	RETVAL = eio_nready ();
1583	OUTPUT:	1239	OUTPUT:
1584	RETVAL	1240	RETVAL
1585		1241
1586	int	1242	int
1587	npending()	1243	npending()
1588	PROTOTYPE:	1244	PROTOTYPE:
1589	CODE:	1245	CODE:
1590	RETVAL = get_npending ();	1246	RETVAL = eio_npending ();
1591	OUTPUT:	1247	OUTPUT:
1592	RETVAL	1248	RETVAL
1593		1249
		1250	int
		1251	nthreads()
		1252	PROTOTYPE:
		1253	CODE:
		1254	RETVAL = eio_nthreads ();
		1255	OUTPUT:
		1256	RETVAL
		1257
		1258	int
		1259	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1260	PROTOTYPE: $$$$
		1261	CODE:
		1262	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1263	RETVAL = posix_fadvise (fh, offset, length, advice);
		1264	#else
		1265	RETVAL = errno = ENOSYS;
		1266	#endif
		1267	OUTPUT:
		1268	RETVAL
		1269
		1270	ssize_t
		1271	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1272	PROTOTYPE: $$$$
		1273	CODE:
		1274	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1275	OUTPUT:
		1276	RETVAL
		1277
		1278	void _on_next_submit (SV *cb)
		1279	CODE:
		1280	SvREFCNT_dec (on_next_submit);
		1281	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1282
1594	PROTOTYPES: DISABLE	1283	PROTOTYPES: DISABLE
1595		1284
1596	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1285	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1597		1286
1598	void	1287	void
1599	cancel (aio_req_ornot req)	1288	cancel (aio_req_ornot req)
1600	CODE:	1289	CODE:
1601	req_cancel (req);	1290	eio_cancel (req);
1602		1291
1603	void	1292	void
1604	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1293	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1605	CODE:	1294	PPCODE:
		1295	{
		1296	if (GIMME_V != G_VOID)
		1297	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1298
		1299	if (items > 1)
		1300	{
		1301	SV *cb_cv =get_cb (callback);
		1302
1606	SvREFCNT_dec (req->callback);	1303	SvREFCNT_dec (req->callback);
1607	req->callback = newSVsv (callback);	1304	req->callback = SvREFCNT_inc (cb_cv);
		1305	}
		1306	}
1608		1307
1609	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1308	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1610		1309
1611	void	1310	void
1612	add (aio_req grp, ...)	1311	add (aio_req grp, ...)
1613	PPCODE:	1312	PPCODE:
1614	{	1313	{
1615	int i;	1314	int i;
1616	aio_req req;
1617		1315
1618	if (grp->fd == 2)	1316	if (grp->int1 == 2)
1619	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1317	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1620		1318
1621	for (i = 1; i < items; ++i )	1319	for (i = 1; i < items; ++i )
1622	{	1320	{
		1321	aio_req req;
		1322
1623	if (GIMME_V != G_VOID)	1323	if (GIMME_V != G_VOID)
1624	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1324	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1625		1325
1626	req = SvAIO_REQ (ST (i));	1326	req = SvAIO_REQ (ST (i));
1627		1327
1628	if (req)	1328	if (req)
1629	{	1329	eio_grp_add (grp, req);
1630	++grp->length;
1631	req->grp = grp;
1632
1633	req->grp_prev = 0;
1634	req->grp_next = grp->grp_first;
1635
1636	if (grp->grp_first)
1637	grp->grp_first->grp_prev = req;
1638
1639	grp->grp_first = req;
1640	}
1641	}	1330	}
1642	}	1331	}
1643		1332
1644	void	1333	void
1645	cancel_subs (aio_req_ornot req)	1334	cancel_subs (aio_req_ornot req)
…		…
1654	AV *av;	1343	AV *av;
1655		1344
1656	grp->errorno = errno;	1345	grp->errorno = errno;
1657		1346
1658	av = newAV ();	1347	av = newAV ();
		1348	av_extend (av, items - 1);
1659		1349
1660	for (i = 1; i < items; ++i )	1350	for (i = 1; i < items; ++i )
1661	av_push (av, newSVsv (ST (i)));	1351	av_push (av, newSVsv (ST (i)));
1662		1352
1663	SvREFCNT_dec (grp->data);	1353	SvREFCNT_dec (grp->sv1);
1664	grp->data = (SV *)av;	1354	grp->sv1 = (SV *)av;
1665	}	1355	}
1666		1356
1667	void	1357	void
1668	errno (aio_req grp, int errorno = errno)	1358	errno (aio_req grp, int errorno = errno)
1669	CODE:	1359	CODE:
1670	grp->errorno = errorno;	1360	grp->errorno = errorno;
1671		1361
1672	void	1362	void
1673	limit (aio_req grp, int limit)	1363	limit (aio_req grp, int limit)
1674	CODE:	1364	CODE:
1675	grp->fd2 = limit;	1365	eio_grp_limit (grp, limit);
1676	aio_grp_feed (grp);
1677		1366
1678	void	1367	void
1679	feed (aio_req grp, SV *callback=&PL_sv_undef)	1368	feed (aio_req grp, SV *callback=&PL_sv_undef)
1680	CODE:	1369	CODE:
1681	{	1370	{
1682	SvREFCNT_dec (grp->fh2);	1371	SvREFCNT_dec (grp->sv2);
1683	grp->fh2 = newSVsv (callback);	1372	grp->sv2 = newSVsv (callback);
		1373	grp->feed = aio_grp_feed;
1684		1374
1685	if (grp->fd2 <= 0)	1375	if (grp->int2 <= 0)
1686	grp->fd2 = 2;	1376	grp->int2 = 2;
1687		1377
1688	aio_grp_feed (grp);	1378	eio_grp_limit (grp, grp->int2);
1689	}	1379	}
1690		1380

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