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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.85 by root, Sat Oct 28 23:32:29 2006 UTC vs.
Revision 1.159 by root, Thu Jan 7 18:08:21 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !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	/* number of seconds after which idle threads exit */	24	#ifdef _WIN32
49	#define IDLE_TIMEOUT 10
50		25
51	/* used for struct dirent, AIX doesn't provide it */	26	# define EIO_STRUCT_DIRENT Direntry_t
52	#ifndef NAME_MAX	27	# undef malloc
53	# define NAME_MAX 4096	28	# undef free
54	#endif
55		29
56	#ifndef PTHREAD_STACK_MIN	30	// perl overrides all those nice win32 functions
57	/* care for broken platforms, e.g. windows */	31	# undef open
58	# define PTHREAD_STACK_MIN 16384	32	# undef read
59	#endif	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
60		47
61	#if __ia64	48	# define chown(a,b,c) (errno = ENOSYS, -1)
62	# define STACKSIZE 65536	49	# define fchown(a,b,c) (errno = ENOSYS, -1)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	50	# define fchmod(a,b) (errno = ENOSYS, -1)
64	# define STACKSIZE PTHREAD_STACK_MIN	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
65	#else	62	#else
66	# define STACKSIZE 16384
67	#endif
68		63
69	/* wether word reads are potentially non-atomic.	64	# include <sys/time.h>
70	* this is conservatice, likely most arches this runs	65	# include <sys/select.h>
71	* on have atomic word read/writes.	66	# include <unistd.h>
72	*/	67	# include <utime.h>
73	#ifndef WORDACCESS_UNSAFE	68	# include <signal.h>
74	# if __i386 || __x86_64	69	# define EIO_STRUCT_DIRENT struct dirent
75	# define WORDACCESS_UNSAFE 0	70
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	71	#endif
79	#endif
80		72
81	/* buffer size for various temporary buffers */	73	/* perl stupidly overrides readdir and maybe others */
82	#define AIO_BUFSIZE 65536	74	/* with thread-unsafe versions, imagine that :( */
		75	#undef readdir
		76	#undef opendir
		77	#undef closedir
83		78
84	#define dBUF \	79	#define EIO_STRUCT_STAT Stat_t
85	char *aio_buf; \	80
86	LOCK (wrklock); \	81	/* use NV for 32 bit perls as it allows larger offsets */
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	82	#if IVSIZE >= 8
88	UNLOCK (wrklock); \	83	# define VAL64 IV
89	if (!aio_buf) \	84	# define SvVAL64 SvIV
90	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)
91		190
92	enum {	191	enum {
93	REQ_QUIT,	192	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
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	};	193	};
105		194
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	195	#include "libeio/eio.c"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		196
109	typedef struct aio_cb
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;
114	SV *fh, *fh2;
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;
122	int type;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126
127	unsigned char flags;
128	unsigned char pri;
129
130	SV *self; /* the perl counterpart of this request, if any */
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132	} aio_cb;
133
134	enum {
135	FLAG_CANCELLED = 0x01,
136	};
137
138	typedef aio_cb *aio_req;	197	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	198	typedef eio_req *aio_req_ornot;
140		199
141	enum {	200	static SV *on_next_submit;
142	PRI_MIN = -4,	201	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	202	static int max_outstanding;
144		203
145	DEFAULT_PRI = 0,	204	static s_epipe respipe;
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		205
150	#define AIO_TICKS ((1000000 + 1023) >> 10)
151
152	static unsigned int max_poll_time = 0;
153	static unsigned int max_poll_reqs = 0;
154
155	/* calculcate time difference in ~1/AIO_TICKS of a second */
156	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
157	{
158	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
159	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
160	}
161
162	static int next_pri = DEFAULT_PRI + PRI_BIAS;
163
164	static unsigned int started, idle, wanted;
165
166	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
167	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
168	#else
169	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
170	#endif
171
172	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
173	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
174
175	/* worker threads management */
176	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
177
178	typedef struct worker {
179	/* locked by wrklock */
180	struct worker *prev, *next;
181
182	pthread_t tid;
183
184	/* locked by reslock, reqlock or wrklock */
185	aio_req req; /* currently processed request */
186	void *dbuf;
187	DIR *dirp;
188	} worker;
189
190	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
191
192	static void worker_clear (worker *wrk)
193	{
194	if (wrk->dirp)
195	{
196	closedir (wrk->dirp);
197	wrk->dirp = 0;
198	}
199
200	if (wrk->dbuf)
201	{
202	free (wrk->dbuf);
203	wrk->dbuf = 0;
204	}
205	}
206
207	static void worker_free (worker *wrk)
208	{
209	wrk->next->prev = wrk->prev;
210	wrk->prev->next = wrk->next;
211
212	free (wrk);
213	}
214
215	static volatile unsigned int nreqs, nready, npending;
216	static volatile unsigned int max_idle = 4;
217	static volatile unsigned int max_outstanding = 0xffffffff;
218	static int respipe [2];
219
220	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
221	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
222	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
223
224	#if WORDACCESS_UNSAFE
225
226	static unsigned int get_nready ()
227	{
228	unsigned int retval;
229
230	LOCK (reqlock);
231	retval = nready;
232	UNLOCK (reqlock);
233
234	return retval;
235	}
236
237	static unsigned int get_npending ()
238	{
239	unsigned int retval;
240
241	LOCK (reslock);
242	retval = npending;
243	UNLOCK (reslock);
244
245	return retval;
246	}
247
248	static unsigned int get_nthreads ()
249	{
250	unsigned int retval;
251
252	LOCK (wrklock);
253	retval = started;
254	UNLOCK (wrklock);
255
256	return retval;
257	}
258
259	#else
260
261	# define get_nready() nready
262	# define get_npending() npending
263	# define get_nthreads() started
264
265	#endif
266
267	/*
268	* a somewhat faster data structure might be nice, but
269	* with 8 priorities this actually needs <20 insns
270	* per shift, the most expensive operation.
271	*/
272	typedef struct {
273	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
274	int size;
275	} reqq;
276
277	static reqq req_queue;
278	static reqq res_queue;
279
280	int reqq_push (reqq *q, aio_req req)
281	{
282	int pri = req->pri;
283	req->next = 0;
284
285	if (q->qe[pri])
286	{
287	q->qe[pri]->next = req;
288	q->qe[pri] = req;
289	}
290	else
291	q->qe[pri] = q->qs[pri] = req;
292
293	return q->size++;
294	}
295
296	aio_req reqq_shift (reqq *q)
297	{
298	int pri;
299
300	if (!q->size)
301	return 0;
302
303	--q->size;
304
305	for (pri = NUM_PRI; pri--; )
306	{
307	aio_req req = q->qs[pri];
308
309	if (req)
310	{
311	if (!(q->qs[pri] = req->next))
312	q->qe[pri] = 0;
313
314	return req;
315	}
316	}
317
318	abort ();
319	}
320
321	static int poll_cb ();
322	static void req_invoke (aio_req req);
323	static void req_free (aio_req req);	206	static void req_destroy (aio_req req);
324	static void req_cancel (aio_req req);	207	static void req_cancel (aio_req req);
325		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
326	/* must be called at most once */	221	/* must be called at most once */
327	static SV *req_sv (aio_req req, const char *klass)	222	static SV *req_sv (aio_req req, HV *stash)
328	{	223	{
329	if (!req->self)	224	if (!req->self)
330	{	225	{
331	req->self = (SV *)newHV ();	226	req->self = (SV *)newHV ();
332	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	227	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
333	}	228	}
334		229
335	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	230	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
336	}	231	}
337		232
338	static aio_req SvAIO_REQ (SV *sv)	233	static aio_req SvAIO_REQ (SV *sv)
339	{	234	{
340	MAGIC *mg;	235	MAGIC *mg;
341		236
342	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")))
343	croak ("object of class " AIO_REQ_KLASS " expected");	241	croak ("object of class IO::AIO::REQ expected");
344		242
345	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	243	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
346		244
347	return mg ? (aio_req)mg->mg_ptr : 0;	245	return mg ? (aio_req)mg->mg_ptr : 0;
348	}	246	}
349		247
350	static void aio_grp_feed (aio_req grp)	248	static void aio_grp_feed (aio_req grp)
351	{	249	{
352	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	250	if (grp->sv2 && SvOK (grp->sv2))
353	{	251	{
354	int old_len = grp->length;
355
356	if (grp->fh2 && SvOK (grp->fh2))
357	{
358	dSP;	252	dSP;
359		253
360	ENTER;	254	ENTER;
361	SAVETMPS;	255	SAVETMPS;
362	PUSHMARK (SP);	256	PUSHMARK (SP);
363	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	257	XPUSHs (req_sv (grp, aio_grp_stash));
364	PUTBACK;	258	PUTBACK;
365	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	259	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
366	SPAGAIN;	260	SPAGAIN;
367	FREETMPS;	261	FREETMPS;
368	LEAVE;	262	LEAVE;
369	}
370
371	/* stop if no progress has been made */
372	if (old_len == grp->length)
373	{
374	SvREFCNT_dec (grp->fh2);
375	grp->fh2 = 0;
376	break;
377	}
378	}	263	}
379	}	264	}
380		265
381	static void aio_grp_dec (aio_req grp)	266	static void req_submit (eio_req *req)
382	{	267	{
383	--grp->length;	268	eio_submit (req);
384		269
385	/* call feeder, if applicable */	270	if (expect_false (on_next_submit))
386	aio_grp_feed (grp);
387
388	/* finish, if done */
389	if (!grp->length && grp->fd)
390	{	271	{
391	req_invoke (grp);	272	dSP;
392	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);
393	}	280	}
394	}	281	}
395		282
396	static void req_invoke (aio_req req)	283	static int req_invoke (eio_req *req)
397	{	284	{
398	dSP;	285	dSP;
399		286
400	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)
401	{	291	{
402	ENTER;	292	ENTER;
403	SAVETMPS;	293	SAVETMPS;
404	PUSHMARK (SP);	294	PUSHMARK (SP);
405	EXTEND (SP, 1);	295	EXTEND (SP, 1);
406		296
407	switch (req->type)	297	switch (req->type)
408	{	298	{
409	case REQ_READDIR:	299	case EIO_READDIR:
410	{	300	{
411	SV *rv = &PL_sv_undef;	301	SV *rv = &PL_sv_undef;
412		302
413	if (req->result >= 0)	303	if (req->result >= 0)
414	{	304	{
415	int i;	305	int i;
416	char *buf = req->data2ptr;	306	char *names = (char *)req->ptr2;
		307	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
417	AV *av = newAV ();	308	AV *av = newAV ();
418		309
419	av_extend (av, req->result - 1);	310	av_extend (av, req->result - 1);
420		311
421	for (i = 0; i < req->result; ++i)	312	for (i = 0; i < req->result; ++i)
422	{	313	{
423	SV *sv = newSVpv (buf, 0);	314	if (req->int1 & EIO_READDIR_DENTS)
		315	{
		316	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
424		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
425	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);
426	buf += SvCUR (sv) + 1;	346	names += SvCUR (name) + 1;
		347	}
427	}	348	}
428		349
429	rv = sv_2mortal (newRV_noinc ((SV *)av));	350	rv = sv_2mortal (newRV_noinc ((SV *)av));
430	}	351	}
431		352
432	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))));
433	}	357	}
434	break;	358	break;
435		359
436	case REQ_OPEN:	360	case EIO_OPEN:
437	{	361	{
438	/* convert fd to fh */	362	/* convert fd to fh */
439	SV *fh;	363	SV *fh = &PL_sv_undef;
440		364
441	PUSHs (sv_2mortal (newSViv (req->result)));	365	if (req->result >= 0)
442	PUTBACK;	366	{
443	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	367	GV *gv = (GV *)sv_newmortal ();
444	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);
445		374
446	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	);
447		382
		383	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		384	fh = (SV *)gv;
		385	}
		386
448	PUSHMARK (SP);	387	PUSHs (fh);
449	XPUSHs (sv_2mortal (fh));
450	}	388	}
451	break;	389	break;
452		390
		391	case EIO_STATVFS:
		392	case EIO_FSTATVFS:
		393	{
		394	SV *rv = &PL_sv_undef;
		395
		396	if (req->result >= 0)
		397	{
		398	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		399	HV *hv = newHV ();
		400
		401	rv = sv_2mortal (newRV_noinc (hv));
		402
		403	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		404	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		405	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		406	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		407	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		408	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		409	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		410	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		411	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		412	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		413	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		414	}
		415
		416	PUSHs (rv);
		417	}
		418
		419	break;
		420
453	case REQ_GROUP:	421	case EIO_GROUP:
454	req->fd = 2; /* mark group as finished */	422	req->int1 = 2; /* mark group as finished */
455		423
456	if (req->data)	424	if (req->sv1)
457	{	425	{
458	int i;	426	int i;
459	AV *av = (AV *)req->data;	427	AV *av = (AV *)req->sv1;
460		428
461	EXTEND (SP, AvFILL (av) + 1);	429	EXTEND (SP, AvFILL (av) + 1);
462	for (i = 0; i <= AvFILL (av); ++i)	430	for (i = 0; i <= AvFILL (av); ++i)
463	PUSHs (*av_fetch (av, i, 0));	431	PUSHs (*av_fetch (av, i, 0));
464	}	432	}
465	break;	433	break;
466		434
467	case REQ_NOP:	435	case EIO_NOP:
468	case REQ_BUSY:	436	case EIO_BUSY:
469	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 */
470		467
471	default:	468	default:
472	PUSHs (sv_2mortal (newSViv (req->result)));	469	PUSHs (sv_2mortal (newSViv (req->result)));
473	break;	470	break;
474	}	471	}
475		472
476	errno = req->errorno;	473	errno = req->errorno;
477		474
478	PUTBACK;	475	PUTBACK;
479	call_sv (req->callback, G_VOID | G_EVAL);	476	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
480	SPAGAIN;	477	SPAGAIN;
481		478
482	FREETMPS;	479	FREETMPS;
483	LEAVE;	480	LEAVE;
		481
		482	PUTBACK;
484	}	483	}
485		484
486	if (req->grp)	485	return !!SvTRUE (ERRSV);
487	{
488	aio_req grp = req->grp;
489
490	/* unlink request */
491	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
492	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
493
494	if (grp->grp_first == req)
495	grp->grp_first = req->grp_next;
496
497	aio_grp_dec (grp);
498	}
499
500	if (SvTRUE (ERRSV))
501	{
502	req_free (req);
503	croak (0);
504	}
505	}	486	}
506		487
507	static void req_free (aio_req req)	488	static void req_destroy (aio_req req)
508	{	489	{
509	if (req->self)	490	if (req->self)
510	{	491	{
511	sv_unmagic (req->self, PERL_MAGIC_ext);	492	sv_unmagic (req->self, PERL_MAGIC_ext);
512	SvREFCNT_dec (req->self);	493	SvREFCNT_dec (req->self);
513	}	494	}
514		495
515	SvREFCNT_dec (req->data);
516	SvREFCNT_dec (req->fh);	496	SvREFCNT_dec (req->sv1);
517	SvREFCNT_dec (req->fh2);	497	SvREFCNT_dec (req->sv2);
518	SvREFCNT_dec (req->callback);	498	SvREFCNT_dec (req->callback);
519	Safefree (req->statdata);
520
521	if (req->type == REQ_READDIR)
522	free (req->data2ptr);
523		499
524	Safefree (req);	500	Safefree (req);
525	}	501	}
526		502
527	static void req_cancel_subs (aio_req grp)	503	static void req_cancel_subs (aio_req grp)
528	{	504	{
529	aio_req sub;	505	aio_req sub;
530		506
531	if (grp->type != REQ_GROUP)	507	if (grp->type != EIO_GROUP)
532	return;	508	return;
533		509
534	SvREFCNT_dec (grp->fh2);	510	SvREFCNT_dec (grp->sv2);
535	grp->fh2 = 0;	511	grp->sv2 = 0;
536		512
537	for (sub = grp->grp_first; sub; sub = sub->grp_next)	513	eio_grp_cancel (grp);
538	req_cancel (sub);
539	}	514	}
540		515
541	static void req_cancel (aio_req req)	516	static void
		517	create_respipe (void)
542	{	518	{
543	req->flags |= FLAG_CANCELLED;	519	if (s_epipe_renew (&respipe))
544		520	croak ("IO::AIO: unable to initialize result pipe");
545	req_cancel_subs (req);
546	}	521	}
547		522
548	static void *aio_proc(void *arg);
549
550	static void start_thread (void)
551	{
552	sigset_t fullsigset, oldsigset;
553	pthread_attr_t attr;
554
555	worker *wrk = calloc (1, sizeof (worker));
556
557	if (!wrk)
558	croak ("unable to allocate worker thread data");
559
560	pthread_attr_init (&attr);
561	pthread_attr_setstacksize (&attr, STACKSIZE);
562	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
563	#ifdef PTHREAD_SCOPE_PROCESS
564	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
565	#endif
566
567	sigfillset (&fullsigset);
568
569	LOCK (wrklock);
570	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
571
572	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
573	{
574	wrk->prev = &wrk_first;
575	wrk->next = wrk_first.next;
576	wrk_first.next->prev = wrk;
577	wrk_first.next = wrk;
578	++started;
579	}
580	else
581	free (wrk);
582
583	sigprocmask (SIG_SETMASK, &oldsigset, 0);
584	UNLOCK (wrklock);
585	}
586
587	static void maybe_start_thread ()
588	{
589	if (get_nthreads () >= wanted)
590	return;
591
592	/* todo: maybe use idle here, but might be less exact */
593	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
594	return;
595
596	start_thread ();
597	}
598
599	static void req_send (aio_req req)
600	{
601	++nreqs;
602
603	LOCK (reqlock);
604	++nready;
605	reqq_push (&req_queue, req);
606	pthread_cond_signal (&reqwait);
607	UNLOCK (reqlock);
608
609	maybe_start_thread ();
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	LOCK (reqlock);
622	reqq_push (&req_queue, req);
623	pthread_cond_signal (&reqwait);
624	UNLOCK (reqlock);
625
626	LOCK (wrklock);
627	--started;
628	UNLOCK (wrklock);
629	}
630
631	static void set_max_idle (int nthreads)
632	{
633	if (WORDACCESS_UNSAFE) LOCK (reqlock);
634	max_idle = nthreads <= 0 ? 1 : nthreads;
635	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
636	}
637
638	static void min_parallel (int nthreads)
639	{
640	if (wanted < nthreads)
641	wanted = nthreads;
642	}
643
644	static void max_parallel (int nthreads)
645	{
646	if (wanted > nthreads)
647	wanted = nthreads;
648
649	while (started > wanted)
650	end_thread ();
651	}
652
653	static void poll_wait ()	523	static void poll_wait (void)
654	{	524	{
655	fd_set rfd;
656
657	while (nreqs)	525	while (eio_nreqs ())
658	{	526	{
659	int size;	527	int size;
660	if (WORDACCESS_UNSAFE) LOCK (reslock);	528
		529	X_LOCK (reslock);
661	size = res_queue.size;	530	size = res_queue.size;
662	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	531	X_UNLOCK (reslock);
663		532
664	if (size)	533	if (size)
665	return;	534	return;
666		535
667	maybe_start_thread ();	536	etp_maybe_start_thread ();
668		537
669	FD_ZERO(&rfd);	538	s_epipe_wait (&respipe);
670	FD_SET(respipe [0], &rfd);
671
672	select (respipe [0] + 1, &rfd, 0, 0, 0);
673	}	539	}
674	}	540	}
675		541
676	static int poll_cb ()	542	static int poll_cb (void)
677	{	543	{
678	dSP;
679	int count = 0;
680	int maxreqs = max_poll_reqs;
681	int do_croak = 0;
682	struct timeval tv_start, tv_now;
683	aio_req req;
684
685	if (max_poll_time)
686	gettimeofday (&tv_start, 0);
687
688	for (;;)	544	for (;;)
689	{	545	{
690	for (;;)	546	int res = eio_poll ();
691	{
692	maybe_start_thread ();
693		547
694	LOCK (reslock);	548	if (res > 0)
695	req = reqq_shift (&res_queue);
696
697	if (req)
698	{
699	--npending;
700
701	if (!res_queue.size)
702	{
703	/* read any signals sent by the worker threads */
704	char buf [32];
705	while (read (respipe [0], buf, 32) == 32)
706	;
707	}
708	}
709
710	UNLOCK (reslock);
711
712	if (!req)
713	break;
714
715	--nreqs;
716
717	if (req->type == REQ_GROUP && req->length)
718	{
719	req->fd = 1; /* mark request as delayed */
720	continue;
721	}
722	else
723	{
724	if (req->type == REQ_READ)
725	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
726
727	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
728	SvREADONLY_off (req->data);
729
730	if (req->statdata)
731	{
732	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
733	PL_laststatval = req->result;
734	PL_statcache = *(req->statdata);
735	}
736
737	req_invoke (req);
738
739	count++;
740	}
741
742	req_free (req);
743
744	if (maxreqs && !--maxreqs)
745	break;
746
747	if (max_poll_time)
748	{
749	gettimeofday (&tv_now, 0);
750
751	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
752	break;
753	}
754	}
755
756	if (nreqs <= max_outstanding)
757	break;	549	croak (0);
		550
		551	if (!max_outstanding || max_outstanding > eio_nreqs ())
		552	return res;
758		553
759	poll_wait ();	554	poll_wait ();
760
761	++maxreqs;
762	}	555	}
763
764	return count;
765	}
766
767	static void create_pipe ()
768	{
769	if (pipe (respipe))
770	croak ("unable to initialize result pipe");
771
772	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
773	croak ("cannot set result pipe to nonblocking mode");
774
775	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
776	croak ("cannot set result pipe to nonblocking mode");
777	}
778
779	/*****************************************************************************/
780	/* work around various missing functions */
781
782	#if !HAVE_PREADWRITE
783	# define pread aio_pread
784	# define pwrite aio_pwrite
785
786	/*
787	* make our pread/pwrite safe against themselves, but not against
788	* normal read/write by using a mutex. slows down execution a lot,
789	* but that's your problem, not mine.
790	*/
791	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
792
793	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
794	{
795	ssize_t res;
796	off_t ooffset;
797
798	LOCK (preadwritelock);
799	ooffset = lseek (fd, 0, SEEK_CUR);
800	lseek (fd, offset, SEEK_SET);
801	res = read (fd, buf, count);
802	lseek (fd, ooffset, SEEK_SET);
803	UNLOCK (preadwritelock);
804
805	return res;
806	}
807
808	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
809	{
810	ssize_t res;
811	off_t ooffset;
812
813	LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);
816	res = write (fd, buf, count);
817	lseek (fd, offset, SEEK_SET);
818	UNLOCK (preadwritelock);
819
820	return res;
821	}
822	#endif
823
824	#if !HAVE_FDATASYNC
825	# define fdatasync fsync
826	#endif
827
828	#if !HAVE_READAHEAD
829	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
830
831	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
832	{
833	dBUF;
834
835	while (count > 0)
836	{
837	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
838
839	pread (fd, aio_buf, len, offset);
840	offset += len;
841	count -= len;
842	}
843
844	errno = 0;
845	}
846
847	#endif
848
849	#if !HAVE_READDIR_R
850	# define readdir_r aio_readdir_r
851
852	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
853
854	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
855	{
856	struct dirent *e;
857	int errorno;
858
859	LOCK (readdirlock);
860
861	e = readdir (dirp);
862	errorno = errno;
863
864	if (e)
865	{
866	*res = ent;
867	strcpy (ent->d_name, e->d_name);
868	}
869	else
870	*res = 0;
871
872	UNLOCK (readdirlock);
873
874	errno = errorno;
875	return e ? 0 : -1;
876	}
877	#endif
878
879	/* sendfile always needs emulation */
880	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
881	{
882	ssize_t res;
883
884	if (!count)
885	return 0;
886
887	#if HAVE_SENDFILE
888	# if __linux
889	res = sendfile (ofd, ifd, &offset, count);
890
891	# elif __freebsd
892	/*
893	* Of course, the freebsd sendfile is a dire hack with no thoughts
894	* wasted on making it similar to other I/O functions.
895	*/
896	{
897	off_t sbytes;
898	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
899
900	if (res < 0 && sbytes)
901	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
902	res = sbytes;
903	}
904
905	# elif __hpux
906	res = sendfile (ofd, ifd, offset, count, 0, 0);
907
908	# elif __solaris
909	{
910	struct sendfilevec vec;
911	size_t sbytes;
912
913	vec.sfv_fd = ifd;
914	vec.sfv_flag = 0;
915	vec.sfv_off = offset;
916	vec.sfv_len = count;
917
918	res = sendfilev (ofd, &vec, 1, &sbytes);
919
920	if (res < 0 && sbytes)
921	res = sbytes;
922	}
923
924	# endif
925	#else
926	res = -1;
927	errno = ENOSYS;
928	#endif
929
930	if (res < 0
931	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
932	#if __solaris
933	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
934	#endif
935	)
936	)
937	{
938	/* emulate sendfile. this is a major pain in the ass */
939	dBUF;
940
941	res = 0;
942
943	while (count)
944	{
945	ssize_t cnt;
946
947	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
948
949	if (cnt <= 0)
950	{
951	if (cnt && !res) res = -1;
952	break;
953	}
954
955	cnt = write (ofd, aio_buf, cnt);
956
957	if (cnt <= 0)
958	{
959	if (cnt && !res) res = -1;
960	break;
961	}
962
963	offset += cnt;
964	res += cnt;
965	count -= cnt;
966	}
967	}
968
969	return res;
970	}
971
972	/* read a full directory */
973	static void scandir_ (aio_req req, worker *self)
974	{
975	DIR *dirp;
976	union
977	{
978	struct dirent d;
979	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
980	} *u;
981	struct dirent *entp;
982	char *name, *names;
983	int memlen = 4096;
984	int memofs = 0;
985	int res = 0;
986	int errorno;
987
988	LOCK (wrklock);
989	self->dirp = dirp = opendir (req->dataptr);
990	self->dbuf = u = malloc (sizeof (*u));
991	req->data2ptr = names = malloc (memlen);
992	UNLOCK (wrklock);
993
994	if (dirp && u && names)
995	for (;;)
996	{
997	errno = 0;
998	readdir_r (dirp, &u->d, &entp);
999
1000	if (!entp)
1001	break;
1002
1003	name = entp->d_name;
1004
1005	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1006	{
1007	int len = strlen (name) + 1;
1008
1009	res++;
1010
1011	while (memofs + len > memlen)
1012	{
1013	memlen *= 2;
1014	LOCK (wrklock);
1015	req->data2ptr = names = realloc (names, memlen);
1016	UNLOCK (wrklock);
1017
1018	if (!names)
1019	break;
1020	}
1021
1022	memcpy (names + memofs, name, len);
1023	memofs += len;
1024	}
1025	}
1026
1027	if (errno)
1028	res = -1;
1029
1030	req->result = res;
1031	}
1032
1033	/*****************************************************************************/
1034
1035	static void *aio_proc (void *thr_arg)
1036	{
1037	aio_req req;
1038	struct timespec ts;
1039	worker *self = (worker *)thr_arg;
1040
1041	/* try to distribute timeouts somewhat evenly */
1042	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1043	* (1000000000UL / 1024UL);
1044
1045	for (;;)
1046	{
1047	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1048
1049	LOCK (reqlock);
1050
1051	for (;;)
1052	{
1053	self->req = req = reqq_shift (&req_queue);
1054
1055	if (req)
1056	break;
1057
1058	++idle;
1059
1060	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1061	== ETIMEDOUT)
1062	{
1063	if (idle > max_idle)
1064	{
1065	--idle;
1066	UNLOCK (reqlock);
1067	LOCK (wrklock);
1068	--started;
1069	UNLOCK (wrklock);
1070	goto quit;
1071	}
1072
1073	/* we are allowed to idle, so do so without any timeout */
1074	pthread_cond_wait (&reqwait, &reqlock);
1075	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1076	}
1077
1078	--idle;
1079	}
1080
1081	--nready;
1082
1083	UNLOCK (reqlock);
1084
1085	errno = 0; /* strictly unnecessary */
1086
1087	if (!(req->flags & FLAG_CANCELLED))
1088	switch (req->type)
1089	{
1090	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1091	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1092
1093	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1094	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1095
1096	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1097	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1098	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1099
1100	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1101	case REQ_CLOSE: req->result = close (req->fd); break;
1102	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1103	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1104	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1105	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1106	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1107	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1108
1109	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1110	case REQ_FSYNC: req->result = fsync (req->fd); break;
1111	case REQ_READDIR: scandir_ (req, self); break;
1112
1113	case REQ_BUSY:
1114	{
1115	struct timeval tv;
1116
1117	tv.tv_sec = req->fd;
1118	tv.tv_usec = req->fd2;
1119
1120	req->result = select (0, 0, 0, 0, &tv);
1121	}
1122
1123	case REQ_GROUP:
1124	case REQ_NOP:
1125	break;
1126
1127	case REQ_QUIT:
1128	goto quit;
1129
1130	default:
1131	req->result = ENOSYS;
1132	break;
1133	}
1134
1135	req->errorno = errno;
1136
1137	LOCK (reslock);
1138
1139	++npending;
1140
1141	if (!reqq_push (&res_queue, req))
1142	/* write a dummy byte to the pipe so fh becomes ready */
1143	write (respipe [1], &respipe, 1);
1144
1145	self->req = 0;
1146	worker_clear (self);
1147
1148	UNLOCK (reslock);
1149	}
1150
1151	quit:
1152	LOCK (wrklock);
1153	worker_free (self);
1154	UNLOCK (wrklock);
1155
1156	return 0;
1157	}
1158
1159	/*****************************************************************************/
1160
1161	static void atfork_prepare (void)
1162	{
1163	LOCK (wrklock);
1164	LOCK (reqlock);
1165	LOCK (reslock);
1166	#if !HAVE_PREADWRITE
1167	LOCK (preadwritelock);
1168	#endif
1169	#if !HAVE_READDIR_R
1170	LOCK (readdirlock);
1171	#endif
1172	}
1173
1174	static void atfork_parent (void)
1175	{
1176	#if !HAVE_READDIR_R
1177	UNLOCK (readdirlock);
1178	#endif
1179	#if !HAVE_PREADWRITE
1180	UNLOCK (preadwritelock);
1181	#endif
1182	UNLOCK (reslock);
1183	UNLOCK (reqlock);
1184	UNLOCK (wrklock);
1185	}	556	}
1186		557
1187	static void atfork_child (void)	558	static void atfork_child (void)
1188	{	559	{
1189	aio_req prv;
1190
1191	while (prv = reqq_shift (&req_queue))
1192	req_free (prv);
1193
1194	while (prv = reqq_shift (&res_queue))
1195	req_free (prv);
1196
1197	while (wrk_first.next != &wrk_first)
1198	{
1199	worker *wrk = wrk_first.next;
1200
1201	if (wrk->req)
1202	req_free (wrk->req);
1203
1204	worker_clear (wrk);
1205	worker_free (wrk);
1206	}
1207
1208	started = 0;
1209	idle = 0;
1210	nreqs = 0;
1211	nready = 0;
1212	npending = 0;
1213
1214	close (respipe [0]);
1215	close (respipe [1]);
1216	create_pipe ();	560	create_respipe ();
		561	}
1217		562
1218	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;
1219	}	568	}
1220		569
1221	#define dREQ \	570	#define dREQ \
		571	SV *cb_cv; \
1222	aio_req req; \	572	aio_req req; \
1223	int req_pri = next_pri; \	573	int req_pri = next_pri; \
1224	next_pri = DEFAULT_PRI + PRI_BIAS; \	574	next_pri = EIO_PRI_DEFAULT; \
1225	\	575	\
1226	if (SvOK (callback) && !SvROK (callback)) \	576	cb_cv = get_cb (callback); \
1227	croak ("callback must be undef or of reference type"); \
1228	\	577	\
1229	Newz (0, req, 1, aio_cb); \	578	Newz (0, req, 1, eio_req); \
1230	if (!req) \	579	if (!req) \
1231	croak ("out of memory during aio_req allocation"); \	580	croak ("out of memory during eio_req allocation"); \
1232	\	581	\
1233	req->callback = newSVsv (callback); \	582	req->callback = SvREFCNT_inc (cb_cv); \
1234	req->pri = req_pri	583	req->pri = req_pri
1235		584
1236	#define REQ_SEND \	585	#define REQ_SEND \
		586	PUTBACK; \
1237	req_send (req); \	587	req_submit (req); \
		588	SPAGAIN; \
1238	\	589	\
1239	if (GIMME_V != G_VOID) \	590	if (GIMME_V != G_VOID) \
1240	XPUSHs (req_sv (req, AIO_REQ_KLASS));	591	XPUSHs (req_sv (req, aio_req_stash));
1241		592
1242	MODULE = IO::AIO PACKAGE = IO::AIO	593	MODULE = IO::AIO PACKAGE = IO::AIO
1243		594
1244	PROTOTYPES: ENABLE	595	PROTOTYPES: ENABLE
1245		596
1246	BOOT:	597	BOOT:
1247	{	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
1248	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);
1249		663
1250	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	664	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1251	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	665	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1252	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1253	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1254	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1255	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1256		666
1257	create_pipe ();	667	create_respipe ();
1258	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	668
		669	if (eio_init (want_poll, done_poll) < 0)
		670	croak ("IO::AIO: unable to initialise eio library");
		671
		672	/* atfork child called in fifo order, so before eio's handler */
		673	X_THREAD_ATFORK (0, 0, atfork_child);
1259	}	674	}
1260		675
1261	void	676	void
1262	max_poll_reqs (int nreqs)	677	max_poll_reqs (int nreqs)
1263	PROTOTYPE: $	678	PROTOTYPE: $
1264	CODE:	679	CODE:
1265	max_poll_reqs = nreqs;	680	eio_set_max_poll_reqs (nreqs);
1266		681
1267	void	682	void
1268	max_poll_time (double nseconds)	683	max_poll_time (double nseconds)
1269	PROTOTYPE: $	684	PROTOTYPE: $
1270	CODE:	685	CODE:
1271	max_poll_time = nseconds * AIO_TICKS;	686	eio_set_max_poll_time (nseconds);
1272		687
1273	void	688	void
1274	min_parallel (int nthreads)	689	min_parallel (int nthreads)
1275	PROTOTYPE: $	690	PROTOTYPE: $
		691	CODE:
		692	eio_set_min_parallel (nthreads);
1276		693
1277	void	694	void
1278	max_parallel (int nthreads)	695	max_parallel (int nthreads)
1279	PROTOTYPE: $	696	PROTOTYPE: $
		697	CODE:
		698	eio_set_max_parallel (nthreads);
1280		699
1281	void	700	void
1282	max_idle (int nthreads)	701	max_idle (int nthreads)
1283	PROTOTYPE: $	702	PROTOTYPE: $
1284	CODE:	703	CODE:
1285	set_max_idle (nthreads);	704	eio_set_max_idle (nthreads);
1286		705
1287	int	706	void
1288	max_outstanding (int maxreqs)	707	max_outstanding (int maxreqs)
1289	PROTOTYPE: $	708	PROTOTYPE: $
1290	CODE:	709	CODE:
1291	RETVAL = max_outstanding;
1292	max_outstanding = maxreqs;	710	max_outstanding = maxreqs;
1293	OUTPUT:
1294	RETVAL
1295		711
1296	void	712	void
1297	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	713	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1298	SV * pathname
1299	int flags
1300	int mode
1301	SV * callback
1302	PROTOTYPE: $$$;$	714	PROTOTYPE: $$$;$
1303	PPCODE:	715	PPCODE:
1304	{	716	{
1305	dREQ;	717	dREQ;
1306		718
1307	req->type = REQ_OPEN;	719	req->type = EIO_OPEN;
1308	req->data = newSVsv (pathname);	720	req->sv1 = newSVsv (pathname);
1309	req->dataptr = SvPVbyte_nolen (req->data);	721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1310	req->fd = flags;	722	req->int1 = flags;
1311	req->mode = mode;	723	req->int2 = mode;
1312		724
1313	REQ_SEND;	725	REQ_SEND;
1314	}	726	}
1315		727
1316	void	728	void
1317	aio_close (fh,callback=&PL_sv_undef)	729	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1318	SV * fh
1319	SV * callback
1320	PROTOTYPE: $;$	730	PROTOTYPE: $;$
1321	ALIAS:	731	ALIAS:
1322	aio_close = REQ_CLOSE
1323	aio_fsync = REQ_FSYNC	732	aio_fsync = EIO_FSYNC
1324	aio_fdatasync = REQ_FDATASYNC	733	aio_fdatasync = EIO_FDATASYNC
1325	PPCODE:	734	PPCODE:
1326	{	735	{
		736	int fd = s_fileno_croak (fh, 0);
1327	dREQ;	737	dREQ;
1328		738
1329	req->type = ix;	739	req->type = ix;
1330	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	741	req->int1 = fd;
1332		742
1333	REQ_SEND (req);	743	REQ_SEND (req);
1334	}	744	}
1335		745
1336	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: $$$$;$
		749	PPCODE:
		750	{
		751	int fd = s_fileno_croak (fh, 0);
		752	dREQ;
		753
		754	req->type = EIO_SYNC_FILE_RANGE;
		755	req->sv1 = newSVsv (fh);
		756	req->int1 = fd;
		757	req->offs = offset;
		758	req->size = nbytes;
		759	req->int2 = flags;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
		765	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		766	PROTOTYPE: $;$
		767	PPCODE:
		768	{
		769	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		770	int fd = s_fileno_croak (fh, 0);
		771	dREQ;
		772
		773	if (close_pipe < 0)
		774	{
		775	int pipefd [2];
		776
		777	if (pipe (pipefd) < 0
		778	|| close (pipefd [1]) < 0
		779	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		780	abort (); /*D*/
		781
		782	close_pipe = pipefd [0];
		783	}
		784
		785	req->type = EIO_DUP2;
		786	req->int1 = close_pipe;
		787	req->sv2 = newSVsv (fh);
		788	req->int2 = fd;
		789
		790	REQ_SEND (req);
		791	}
		792
		793	void
1337	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	794	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1338	SV * fh
1339	UV offset
1340	UV length
1341	SV * data
1342	UV dataoffset
1343	SV * callback
1344	ALIAS:	795	ALIAS:
1345	aio_read = REQ_READ	796	aio_read = EIO_READ
1346	aio_write = REQ_WRITE	797	aio_write = EIO_WRITE
1347	PROTOTYPE: $$$$$;$	798	PROTOTYPE: $$$$$;$
1348	PPCODE:	799	PPCODE:
1349	{	800	{
1350	aio_req req;
1351	STRLEN svlen;	801	STRLEN svlen;
		802	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1352	char *svptr = SvPVbyte (data, svlen);	803	char *svptr = SvPVbyte (data, svlen);
1353		804	UV len = SvUV (length);
1354	SvUPGRADE (data, SVt_PV);
1355	SvPOK_on (data);
1356		805
1357	if (dataoffset < 0)	806	if (dataoffset < 0)
1358	dataoffset += svlen;	807	dataoffset += svlen;
1359		808
1360	if (dataoffset < 0 || dataoffset > svlen)	809	if (dataoffset < 0 || dataoffset > svlen)
1361	croak ("data offset outside of string");	810	croak ("dataoffset outside of data scalar");
1362		811
1363	if (ix == REQ_WRITE)	812	if (ix == EIO_WRITE)
1364	{	813	{
1365	/* write: check length and adjust. */	814	/* write: check length and adjust. */
1366	if (length < 0 || length + dataoffset > svlen)	815	if (!SvOK (length) || len + dataoffset > svlen)
1367	length = svlen - dataoffset;	816	len = svlen - dataoffset;
1368	}	817	}
1369	else	818	else
1370	{	819	{
1371	/* read: grow scalar as necessary */	820	/* read: check type and grow scalar as necessary */
		821	SvUPGRADE (data, SVt_PV);
1372	svptr = SvGROW (data, length + dataoffset);	822	svptr = SvGROW (data, len + dataoffset + 1);
1373	}	823	}
1374
1375	if (length < 0)
1376	croak ("length must not be negative");
1377		824
1378	{	825	{
1379	dREQ;	826	dREQ;
1380		827
1381	req->type = ix;	828	req->type = ix;
1382	req->fh = newSVsv (fh);	829	req->sv1 = newSVsv (fh);
1383	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	830	req->int1 = fd;
1384	: IoOFP (sv_2io (fh)));	831	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1385	req->offset = offset;	832	req->size = len;
1386	req->length = length;
1387	req->data = SvREFCNT_inc (data);	833	req->sv2 = SvREFCNT_inc (data);
1388	req->dataptr = (char *)svptr + dataoffset;	834	req->ptr2 = (char *)svptr + dataoffset;
		835	req->stroffset = dataoffset;
1389		836
1390	if (!SvREADONLY (data))	837	if (!SvREADONLY (data))
1391	{	838	{
1392	SvREADONLY_on (data);	839	SvREADONLY_on (data);
1393	req->data2ptr = (void *)data;	840	req->flags |= FLAG_SV2_RO_OFF;
1394	}	841	}
1395		842
1396	REQ_SEND;	843	REQ_SEND;
1397	}	844	}
1398	}	845	}
1399		846
1400	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
1401	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)
1402	SV * out_fh
1403	SV * in_fh
1404	UV in_offset
1405	UV length
1406	SV * callback
1407	PROTOTYPE: $$$$;$	864	PROTOTYPE: $$$$;$
1408	PPCODE:	865	PPCODE:
1409	{	866	{
		867	int ifd = s_fileno_croak (in_fh , 0);
		868	int ofd = s_fileno_croak (out_fh, 1);
1410	dREQ;	869	dREQ;
1411		870
1412	req->type = REQ_SENDFILE;	871	req->type = EIO_SENDFILE;
1413	req->fh = newSVsv (out_fh);	872	req->sv1 = newSVsv (out_fh);
1414	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	873	req->int1 = ofd;
1415	req->fh2 = newSVsv (in_fh);	874	req->sv2 = newSVsv (in_fh);
1416	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	875	req->int2 = ifd;
1417	req->offset = in_offset;	876	req->offs = in_offset;
1418	req->length = length;	877	req->size = length;
1419		878
1420	REQ_SEND;	879	REQ_SEND;
1421	}	880	}
1422		881
1423	void	882	void
1424	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	883	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1425	SV * fh
1426	UV offset
1427	IV length
1428	SV * callback
1429	PROTOTYPE: $$$;$	884	PROTOTYPE: $$$;$
1430	PPCODE:	885	PPCODE:
1431	{	886	{
		887	int fd = s_fileno_croak (fh, 0);
1432	dREQ;	888	dREQ;
1433		889
1434	req->type = REQ_READAHEAD;	890	req->type = EIO_READAHEAD;
1435	req->fh = newSVsv (fh);	891	req->sv1 = newSVsv (fh);
1436	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	892	req->int1 = fd;
1437	req->offset = offset;	893	req->offs = offset;
1438	req->length = length;	894	req->size = length;
1439		895
1440	REQ_SEND;	896	REQ_SEND;
1441	}	897	}
1442		898
1443	void	899	void
1444	aio_stat (fh_or_path,callback=&PL_sv_undef)	900	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1445	SV * fh_or_path
1446	SV * callback
1447	ALIAS:	901	ALIAS:
1448	aio_stat = REQ_STAT	902	aio_stat = EIO_STAT
1449	aio_lstat = REQ_LSTAT	903	aio_lstat = EIO_LSTAT
		904	aio_statvfs = EIO_STATVFS
1450	PPCODE:	905	PPCODE:
1451	{	906	{
1452	dREQ;	907	dREQ;
1453		908
1454	New (0, req->statdata, 1, Stat_t);	909	req->sv1 = newSVsv (fh_or_path);
1455	if (!req->statdata)
1456	{
1457	req_free (req);
1458	croak ("out of memory during aio_req->statdata allocation");
1459	}
1460		910
1461	if (SvPOK (fh_or_path))	911	if (SvPOK (req->sv1))
1462	{	912	{
1463	req->type = ix;	913	req->type = ix;
1464	req->data = newSVsv (fh_or_path);
1465	req->dataptr = SvPVbyte_nolen (req->data);	914	req->ptr1 = SvPVbyte_nolen (req->sv1);
1466	}	915	}
1467	else	916	else
1468	{	917	{
1469	req->type = REQ_FSTAT;	918	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1470	req->fh = newSVsv (fh_or_path);
1471	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	919	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1472	}	920	}
1473		921
1474	REQ_SEND;	922	REQ_SEND;
1475	}	923	}
1476		924
1477	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
1478	aio_unlink (pathname,callback=&PL_sv_undef)	1040	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1479	SV * pathname
1480	SV * callback
1481	ALIAS:	1041	ALIAS:
1482	aio_unlink = REQ_UNLINK	1042	aio_unlink = EIO_UNLINK
1483	aio_rmdir = REQ_RMDIR	1043	aio_rmdir = EIO_RMDIR
1484	aio_readdir = REQ_READDIR	1044	aio_readdir = EIO_READDIR
1485	PPCODE:	1045	PPCODE:
1486	{	1046	{
1487	dREQ;	1047	dREQ;
1488		1048
1489	req->type = ix;	1049	req->type = ix;
1490	req->data = newSVsv (pathname);	1050	req->sv1 = newSVsv (pathname);
1491	req->dataptr = SvPVbyte_nolen (req->data);	1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
1492		1052
1493	REQ_SEND;	1053	REQ_SEND;
1494	}	1054	}
1495		1055
1496	void	1056	void
1497	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1057	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1498	SV * oldpath
1499	SV * newpath
1500	SV * callback
1501	ALIAS:	1058	ALIAS:
1502	aio_link = REQ_LINK	1059	aio_link = EIO_LINK
1503	aio_symlink = REQ_SYMLINK	1060	aio_symlink = EIO_SYMLINK
1504	aio_rename = REQ_RENAME	1061	aio_rename = EIO_RENAME
1505	PPCODE:	1062	PPCODE:
1506	{	1063	{
1507	dREQ;	1064	dREQ;
1508		1065
1509	req->type = ix;	1066	req->type = ix;
1510	req->fh = newSVsv (oldpath);	1067	req->sv1 = newSVsv (oldpath);
1511	req->data2ptr = SvPVbyte_nolen (req->fh);	1068	req->ptr1 = SvPVbyte_nolen (req->sv1);
1512	req->data = newSVsv (newpath);	1069	req->sv2 = newSVsv (newpath);
1513	req->dataptr = SvPVbyte_nolen (req->data);	1070	req->ptr2 = SvPVbyte_nolen (req->sv2);
1514		1071
1515	REQ_SEND;	1072	REQ_SEND;
1516	}	1073	}
1517		1074
1518	void	1075	void
1519	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1076	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1520	SV * pathname
1521	SV * callback
1522	UV mode
1523	UV dev
1524	PPCODE:	1077	PPCODE:
1525	{	1078	{
1526	dREQ;	1079	dREQ;
1527		1080
1528	req->type = REQ_MKNOD;	1081	req->type = EIO_MKNOD;
1529	req->data = newSVsv (pathname);	1082	req->sv1 = newSVsv (pathname);
1530	req->dataptr = SvPVbyte_nolen (req->data);	1083	req->ptr1 = SvPVbyte_nolen (req->sv1);
1531	req->mode = (mode_t)mode;	1084	req->int2 = (mode_t)mode;
1532	req->offset = dev;	1085	req->offs = dev;
1533		1086
1534	REQ_SEND;	1087	REQ_SEND;
1535	}	1088	}
1536		1089
1537	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
1538	aio_busy (delay,callback=&PL_sv_undef)	1125	aio_busy (double delay, SV *callback=&PL_sv_undef)
1539	double delay
1540	SV * callback
1541	PPCODE:	1126	PPCODE:
1542	{	1127	{
1543	dREQ;	1128	dREQ;
1544		1129
1545	req->type = REQ_BUSY;	1130	req->type = EIO_BUSY;
1546	req->fd = delay < 0. ? 0 : delay;	1131	req->nv1 = delay < 0. ? 0. : delay;
1547	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1548		1132
1549	REQ_SEND;	1133	REQ_SEND;
1550	}	1134	}
1551		1135
1552	void	1136	void
1553	aio_group (callback=&PL_sv_undef)	1137	aio_group (SV *callback=&PL_sv_undef)
1554	SV * callback
1555	PROTOTYPE: ;$	1138	PROTOTYPE: ;$
1556	PPCODE:	1139	PPCODE:
1557	{	1140	{
1558	dREQ;	1141	dREQ;
1559		1142
1560	req->type = REQ_GROUP;	1143	req->type = EIO_GROUP;
		1144
1561	req_send (req);	1145	req_submit (req);
1562
1563	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1146	XPUSHs (req_sv (req, aio_grp_stash));
1564	}	1147	}
1565		1148
1566	void	1149	void
1567	aio_nop (callback=&PL_sv_undef)	1150	aio_nop (SV *callback=&PL_sv_undef)
1568	SV * callback	1151	ALIAS:
		1152	aio_nop = EIO_NOP
		1153	aio_sync = EIO_SYNC
1569	PPCODE:	1154	PPCODE:
1570	{	1155	{
1571	dREQ;	1156	dREQ;
1572		1157
1573	req->type = REQ_NOP;	1158	req->type = ix;
1574		1159
1575	REQ_SEND;	1160	REQ_SEND;
1576	}	1161	}
1577		1162
1578	int	1163	int
1579	aioreq_pri (int pri = 0)	1164	aioreq_pri (int pri = 0)
1580	PROTOTYPE: ;$	1165	PROTOTYPE: ;$
1581	CODE:	1166	CODE:
1582	RETVAL = next_pri - PRI_BIAS;	1167	RETVAL = next_pri;
1583	if (items > 0)	1168	if (items > 0)
1584	{	1169	{
1585	if (pri < PRI_MIN) pri = PRI_MIN;	1170	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1586	if (pri > PRI_MAX) pri = PRI_MAX;	1171	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1587	next_pri = pri + PRI_BIAS;	1172	next_pri = pri;
1588	}	1173	}
1589	OUTPUT:	1174	OUTPUT:
1590	RETVAL	1175	RETVAL
1591		1176
1592	void	1177	void
1593	aioreq_nice (int nice = 0)	1178	aioreq_nice (int nice = 0)
1594	CODE:	1179	CODE:
1595	nice = next_pri - nice;	1180	nice = next_pri - nice;
1596	if (nice < PRI_MIN) nice = PRI_MIN;	1181	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1597	if (nice > PRI_MAX) nice = PRI_MAX;	1182	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1598	next_pri = nice + PRI_BIAS;	1183	next_pri = nice;
1599		1184
1600	void	1185	void
1601	flush ()	1186	flush ()
1602	PROTOTYPE:	1187	PROTOTYPE:
1603	CODE:	1188	CODE:
1604	while (nreqs)	1189	while (eio_nreqs ())
1605	{	1190	{
1606	poll_wait ();	1191	poll_wait ();
1607	poll_cb (0);	1192	poll_cb ();
1608	}	1193	}
1609		1194
1610	void	1195	int
1611	poll()	1196	poll()
1612	PROTOTYPE:	1197	PROTOTYPE:
1613	CODE:	1198	CODE:
1614	if (nreqs)
1615	{
1616	poll_wait ();	1199	poll_wait ();
1617	poll_cb (0);	1200	RETVAL = poll_cb ();
1618	}	1201	OUTPUT:
		1202	RETVAL
1619		1203
1620	int	1204	int
1621	poll_fileno()	1205	poll_fileno()
1622	PROTOTYPE:	1206	PROTOTYPE:
1623	CODE:	1207	CODE:
1624	RETVAL = respipe [0];	1208	RETVAL = s_epipe_fd (&respipe);
1625	OUTPUT:	1209	OUTPUT:
1626	RETVAL	1210	RETVAL
1627		1211
1628	int	1212	int
1629	poll_cb(...)	1213	poll_cb(...)
…		…
1635		1219
1636	void	1220	void
1637	poll_wait()	1221	poll_wait()
1638	PROTOTYPE:	1222	PROTOTYPE:
1639	CODE:	1223	CODE:
1640	if (nreqs)
1641	poll_wait ();	1224	poll_wait ();
1642		1225
1643	int	1226	int
1644	nreqs()	1227	nreqs()
1645	PROTOTYPE:	1228	PROTOTYPE:
1646	CODE:	1229	CODE:
1647	RETVAL = nreqs;	1230	RETVAL = eio_nreqs ();
1648	OUTPUT:	1231	OUTPUT:
1649	RETVAL	1232	RETVAL
1650		1233
1651	int	1234	int
1652	nready()	1235	nready()
1653	PROTOTYPE:	1236	PROTOTYPE:
1654	CODE:	1237	CODE:
1655	RETVAL = get_nready ();	1238	RETVAL = eio_nready ();
1656	OUTPUT:	1239	OUTPUT:
1657	RETVAL	1240	RETVAL
1658		1241
1659	int	1242	int
1660	npending()	1243	npending()
1661	PROTOTYPE:	1244	PROTOTYPE:
1662	CODE:	1245	CODE:
1663	RETVAL = get_npending ();	1246	RETVAL = eio_npending ();
1664	OUTPUT:	1247	OUTPUT:
1665	RETVAL	1248	RETVAL
1666		1249
1667	int	1250	int
1668	nthreads()	1251	nthreads()
1669	PROTOTYPE:	1252	PROTOTYPE:
1670	CODE:	1253	CODE:
1671	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1254	RETVAL = eio_nthreads ();
1672	RETVAL = started;
1673	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1674	OUTPUT:	1255	OUTPUT:
1675	RETVAL	1256	RETVAL
1676		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
1677	PROTOTYPES: DISABLE	1283	PROTOTYPES: DISABLE
1678		1284
1679	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1285	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1680		1286
1681	void	1287	void
1682	cancel (aio_req_ornot req)	1288	cancel (aio_req_ornot req)
1683	CODE:	1289	CODE:
1684	req_cancel (req);	1290	eio_cancel (req);
1685		1291
1686	void	1292	void
1687	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1293	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1688	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
1689	SvREFCNT_dec (req->callback);	1303	SvREFCNT_dec (req->callback);
1690	req->callback = newSVsv (callback);	1304	req->callback = SvREFCNT_inc (cb_cv);
		1305	}
		1306	}
1691		1307
1692	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1308	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1693		1309
1694	void	1310	void
1695	add (aio_req grp, ...)	1311	add (aio_req grp, ...)
1696	PPCODE:	1312	PPCODE:
1697	{	1313	{
1698	int i;	1314	int i;
1699	aio_req req;
1700		1315
1701	if (grp->fd == 2)	1316	if (grp->int1 == 2)
1702	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");
1703		1318
1704	for (i = 1; i < items; ++i )	1319	for (i = 1; i < items; ++i )
1705	{	1320	{
		1321	aio_req req;
		1322
1706	if (GIMME_V != G_VOID)	1323	if (GIMME_V != G_VOID)
1707	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1324	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1708		1325
1709	req = SvAIO_REQ (ST (i));	1326	req = SvAIO_REQ (ST (i));
1710		1327
1711	if (req)	1328	if (req)
1712	{	1329	eio_grp_add (grp, req);
1713	++grp->length;
1714	req->grp = grp;
1715
1716	req->grp_prev = 0;
1717	req->grp_next = grp->grp_first;
1718
1719	if (grp->grp_first)
1720	grp->grp_first->grp_prev = req;
1721
1722	grp->grp_first = req;
1723	}
1724	}	1330	}
1725	}	1331	}
1726		1332
1727	void	1333	void
1728	cancel_subs (aio_req_ornot req)	1334	cancel_subs (aio_req_ornot req)
…		…
1737	AV *av;	1343	AV *av;
1738		1344
1739	grp->errorno = errno;	1345	grp->errorno = errno;
1740		1346
1741	av = newAV ();	1347	av = newAV ();
		1348	av_extend (av, items - 1);
1742		1349
1743	for (i = 1; i < items; ++i )	1350	for (i = 1; i < items; ++i )
1744	av_push (av, newSVsv (ST (i)));	1351	av_push (av, newSVsv (ST (i)));
1745		1352
1746	SvREFCNT_dec (grp->data);	1353	SvREFCNT_dec (grp->sv1);
1747	grp->data = (SV *)av;	1354	grp->sv1 = (SV *)av;
1748	}	1355	}
1749		1356
1750	void	1357	void
1751	errno (aio_req grp, int errorno = errno)	1358	errno (aio_req grp, int errorno = errno)
1752	CODE:	1359	CODE:
1753	grp->errorno = errorno;	1360	grp->errorno = errorno;
1754		1361
1755	void	1362	void
1756	limit (aio_req grp, int limit)	1363	limit (aio_req grp, int limit)
1757	CODE:	1364	CODE:
1758	grp->fd2 = limit;	1365	eio_grp_limit (grp, limit);
1759	aio_grp_feed (grp);
1760		1366
1761	void	1367	void
1762	feed (aio_req grp, SV *callback=&PL_sv_undef)	1368	feed (aio_req grp, SV *callback=&PL_sv_undef)
1763	CODE:	1369	CODE:
1764	{	1370	{
1765	SvREFCNT_dec (grp->fh2);	1371	SvREFCNT_dec (grp->sv2);
1766	grp->fh2 = newSVsv (callback);	1372	grp->sv2 = newSVsv (callback);
		1373	grp->feed = aio_grp_feed;
1767		1374
1768	if (grp->fd2 <= 0)	1375	if (grp->int2 <= 0)
1769	grp->fd2 = 2;	1376	grp->int2 = 2;
1770		1377
1771	aio_grp_feed (grp);	1378	eio_grp_limit (grp, grp->int2);
1772	}	1379	}
1773		1380

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