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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.186 by root, Thu Jul 14 22:36:17 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>	21	# include <sys/mman.h>
36	# elif __freebsd	22	#endif
37	# include <sys/socket.h>	23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	#ifdef _WIN32
		28
		29	# define EIO_STRUCT_DIRENT Direntry_t
		30	# undef malloc
		31	# undef free
		32
		33	// perl overrides all those nice win32 functions
		34	# undef open
		35	# undef read
		36	# undef write
		37	# undef send
		38	# undef recv
		39	# undef stat
		40	# undef fstat
		41	# define lstat stat
		42	# undef truncate
		43	# undef ftruncate
		44	# undef open
		45	# undef close
		46	# undef unlink
		47	# undef rmdir
		48	# undef rename
		49	# undef lseek
		50
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54
		55	#else
		56
38	# include <sys/uio.h>	57	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	58	# include <sys/select.h>
		59	# include <unistd.h>
		60	# include <utime.h>
		61	# include <signal.h>
		62	# define EIO_STRUCT_DIRENT struct dirent
		63
		64	#endif
		65
		66	/* perl stupidly overrides readdir and maybe others */
		67	/* with thread-unsafe versions, imagine that :( */
		68	#undef readdir
		69	#undef opendir
		70	#undef closedir
		71
		72	#define EIO_STRUCT_STAT Stat_t
		73
		74	/* use NV for 32 bit perls as it allows larger offsets */
		75	#if IVSIZE >= 8
		76	# define VAL64 IV
		77	# define SvVAL64 SvIV
		78	# define newSVval64 newSViv
		79	#else
		80	# define VAL64 NV
		81	# define SvVAL64 SvNV
		82	# define newSVval64 newSVnv
		83	#endif
		84
		85	/*****************************************************************************/
		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	typedef SV SV8; /* byte-sv, used for argument-checking */
		99	typedef int aio_rfd; /* read file desriptor */
		100	typedef int aio_wfd; /* write file descriptor */
		101
		102	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/config.h"
		113	#include "libeio/eio.h"
		114
		115	/* Linux/others */
		116	#ifndef O_ASYNC
		117	# define O_ASYNC 0
		118	#endif
		119	#ifndef O_DIRECT
		120	# define O_DIRECT 0
		121	#endif
		122	#ifndef O_NOATIME
		123	# define O_NOATIME 0
		124	#endif
		125
		126	/* POSIX */
		127	#ifndef O_CLOEXEC
		128	# define O_CLOEXEC 0
		129	#endif
		130	#ifndef O_NOFOLLOW
		131	# define O_NOFOLLOW 0
		132	#endif
		133	#ifndef O_NOCTTY
		134	# define O_NOCTTY 0
		135	#endif
		136	#ifndef O_NONBLOCK
		137	# define O_NONBLOCK 0
		138	#endif
		139	#ifndef O_EXEC
		140	# define O_EXEC 0
		141	#endif
		142	#ifndef O_SEARCH
		143	# define O_SEARCH 0
		144	#endif
		145	#ifndef O_DIRECTORY
		146	# define O_DIRECTORY 0
		147	#endif
		148	#ifndef O_DSYNC
		149	# define O_DSYNC 0
		150	#endif
		151	#ifndef O_RSYNC
		152	# define O_RSYNC 0
		153	#endif
		154	#ifndef O_SYNC
		155	# define O_SYNC 0
		156	#endif
		157	#ifndef O_TTY_INIT
		158	# define O_TTY_INIT 0
		159	#endif
		160
		161	#ifndef POSIX_FADV_NORMAL
		162	# define POSIX_FADV_NORMAL 0
		163	#endif
		164	#ifndef POSIX_FADV_SEQUENTIAL
		165	# define POSIX_FADV_SEQUENTIAL 0
		166	#endif
		167	#ifndef POSIX_FADV_RANDOM
		168	# define POSIX_FADV_RANDOM 0
		169	#endif
		170	#ifndef POSIX_FADV_NOREUSE
		171	# define POSIX_FADV_NOREUSE 0
		172	#endif
		173	#ifndef POSIX_FADV_WILLNEED
		174	# define POSIX_FADV_WILLNEED 0
		175	#endif
		176	#ifndef POSIX_FADV_DONTNEED
		177	# define POSIX_FADV_DONTNEED 0
		178	#endif
		179
		180	#if !HAVE_POSIX_FADVISE
		181	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		182	#endif
		183
		184	#ifndef POSIX_MADV_NORMAL
		185	# define POSIX_MADV_NORMAL 0
		186	#endif
		187	#ifndef POSIX_MADV_SEQUENTIAL
		188	# define POSIX_MADV_SEQUENTIAL 0
		189	#endif
		190	#ifndef POSIX_MADV_RANDOM
		191	# define POSIX_MADV_RANDOM 0
		192	#endif
		193	#ifndef POSIX_MADV_WILLNEED
		194	# define POSIX_MADV_WILLNEED 0
		195	#endif
		196	#ifndef POSIX_MADV_DONTNEED
		197	# define POSIX_MADV_DONTNEED 0
		198	#endif
		199
		200	#if !HAVE_POSIX_MADVISE
		201	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		202	#endif
		203
		204	#ifndef PROT_NONE
		205	# define PROT_NONE 0
		206	#endif
		207	#ifndef PROT_READ
		208	# define PROT_READ 0
		209	#endif
		210	#ifndef PROT_WRITE
		211	# define PROT_READ 0
		212	#endif
		213	#ifndef PROT_EXEC
		214	# define PROT_EXEC 0
		215	#endif
		216
		217	#ifndef ST_NODEV
		218	# define ST_NODEV 0
		219	#endif
		220	#ifndef ST_NOEXEC
		221	# define ST_NOEXEC 0
		222	#endif
		223	#ifndef ST_SYNCHRONOUS
		224	# define ST_SYNCHRONOUS 0
		225	#endif
		226	#ifndef ST_MANDLOCK
		227	# define ST_MANDLOCK 0
		228	#endif
		229	#ifndef ST_WRITE
		230	# define ST_WRITE 0
		231	#endif
		232	#ifndef ST_APPEND
		233	# define ST_APPEND 0
		234	#endif
		235	#ifndef ST_IMMUTABLE
		236	# define ST_IMMUTABLE 0
		237	#endif
		238	#ifndef ST_NOATIME
		239	# define ST_NOATIME 0
		240	#endif
		241	#ifndef ST_NODIRATIME
		242	# define ST_NODIRATIME 0
		243	#endif
		244	#ifndef ST_RELATIME
		245	# define ST_RELATIME 0
		246	#endif
		247
		248	#ifndef S_IFIFO
		249	# define S_IFIFO 0
		250	#endif
		251	#ifndef S_IFCHR
		252	# define S_IFCHR 0
		253	#endif
		254	#ifndef S_IFBLK
		255	# define S_IFBLK 0
		256	#endif
		257	#ifndef S_IFLNK
		258	# define S_IFLNK 0
		259	#endif
		260	#ifndef S_IFREG
		261	# define S_IFREG 0
		262	#endif
		263	#ifndef S_IFDIR
		264	# define S_IFDIR 0
		265	#endif
		266	#ifndef S_IFWHT
		267	# define S_IFWHT 0
		268	#endif
		269	#ifndef S_IFSOCK
		270	# define S_IFSOCK 0
		271	#endif
		272
		273	#ifndef MAP_ANONYMOUS
		274	# ifdef MAP_ANON
		275	# define MAP_ANONYMOUS MAP_ANON
43	# else	276	# else
44	# error sendfile support requested but not available	277	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	278	# endif
46	#endif	279	#endif
47		280	#ifndef MAP_HUGETLB
48	/* number of seconds after which idle threads exit */	281	# define MAP_HUGETLB 0
49	#define IDLE_TIMEOUT 10
50
51	/* used for struct dirent, AIX doesn't provide it */
52	#ifndef NAME_MAX
53	# define NAME_MAX 4096
54	#endif
55
56	#ifndef PTHREAD_STACK_MIN
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	282	#endif
		283	#ifndef MAP_LOCKED
		284	# define MAP_LOCKED 0
79	#endif	285	#endif
		286	#ifndef MAP_NORESERVE
		287	# define MAP_NORESERVE 0
		288	#endif
		289	#ifndef MAP_POPULATE
		290	# define MAP_POPULATE 0
		291	#endif
		292	#ifndef MAP_NONBLOCK
		293	# define MAP_NONBLOCK 0
		294	#endif
80		295
81	/* buffer size for various temporary buffers */	296	#ifndef makedev
82	#define AIO_BUFSIZE 65536	297	# define makedev(maj,min) (((maj) << 8) | (min))
		298	#endif
		299	#ifndef major
		300	# define major(dev) ((dev) >> 8)
		301	#endif
		302	#ifndef minor
		303	# define minor(dev) ((dev) & 0xff)
		304	#endif
83		305
84	#define dBUF \	306	#ifndef PAGESIZE
85	char *aio_buf; \	307	# define PAGESIZE sysconf (_SC_PAGESIZE)
86	LOCK (wrklock); \	308	#endif
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	309
88	UNLOCK (wrklock); \	310	static int req_invoke (eio_req *req);
89	if (!aio_buf) \	311	#define EIO_FINISH(req) req_invoke (req)
90	return -1;	312	static void req_destroy (eio_req *grp);
		313	#define EIO_DESTROY(req) req_destroy (req)
91		314
92	enum {	315	enum {
93	REQ_QUIT,	316	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, REQ_READLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};	317	};
105		318
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	319	#include "libeio/eio.c"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		320
109	typedef struct aio_cb
110	{
111	struct aio_cb *volatile next;
112
113	SV *callback, *fh;
114	SV *sv1, *sv2;
115	void *ptr1, *ptr2;
116	Stat_t *statdata;
117	off_t offs;
118	size_t size;
119	ssize_t result;
120
121	STRLEN stroffset;
122	int type;
123	int int1, int2;
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	FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */
137	};
138
139	typedef aio_cb *aio_req;	321	typedef eio_req *aio_req;
140	typedef aio_cb *aio_req_ornot;	322	typedef eio_req *aio_req_ornot;
141		323
142	enum {	324	static SV *on_next_submit;
143	PRI_MIN = -4,	325	static int next_pri = EIO_PRI_DEFAULT;
144	PRI_MAX = 4,	326	static int max_outstanding;
145		327
146	DEFAULT_PRI = 0,	328	static s_epipe respipe;
147	PRI_BIAS = -PRI_MIN,
148	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149	};
150		329
151	#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153	static unsigned int max_poll_time = 0;
154	static unsigned int max_poll_reqs = 0;
155
156	/* calculcate time difference in ~1/AIO_TICKS of a second */
157	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158	{
159	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
161	}
162
163	static int next_pri = DEFAULT_PRI + PRI_BIAS;
164
165	static unsigned int started, idle, wanted;
166
167	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169	#else
170	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171	#endif
172
173	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176	/* worker threads management */
177	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179	typedef struct worker {
180	/* locked by wrklock */
181	struct worker *prev, *next;
182
183	pthread_t tid;
184
185	/* locked by reslock, reqlock or wrklock */
186	aio_req req; /* currently processed request */
187	void *dbuf;
188	DIR *dirp;
189	} worker;
190
191	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193	static void worker_clear (worker *wrk)
194	{
195	if (wrk->dirp)
196	{
197	closedir (wrk->dirp);
198	wrk->dirp = 0;
199	}
200
201	if (wrk->dbuf)
202	{
203	free (wrk->dbuf);
204	wrk->dbuf = 0;
205	}
206	}
207
208	static void worker_free (worker *wrk)
209	{
210	wrk->next->prev = wrk->prev;
211	wrk->prev->next = wrk->next;
212
213	free (wrk);
214	}
215
216	static volatile unsigned int nreqs, nready, npending;
217	static volatile unsigned int max_idle = 4;
218	static volatile unsigned int max_outstanding = 0xffffffff;
219	static int respipe [2];
220
221	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225	#if WORDACCESS_UNSAFE
226
227	static unsigned int get_nready ()
228	{
229	unsigned int retval;
230
231	LOCK (reqlock);
232	retval = nready;
233	UNLOCK (reqlock);
234
235	return retval;
236	}
237
238	static unsigned int get_npending ()
239	{
240	unsigned int retval;
241
242	LOCK (reslock);
243	retval = npending;
244	UNLOCK (reslock);
245
246	return retval;
247	}
248
249	static unsigned int get_nthreads ()
250	{
251	unsigned int retval;
252
253	LOCK (wrklock);
254	retval = started;
255	UNLOCK (wrklock);
256
257	return retval;
258	}
259
260	#else
261
262	# define get_nready() nready
263	# define get_npending() npending
264	# define get_nthreads() started
265
266	#endif
267
268	/*
269	* a somewhat faster data structure might be nice, but
270	* with 8 priorities this actually needs <20 insns
271	* per shift, the most expensive operation.
272	*/
273	typedef struct {
274	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275	int size;
276	} reqq;
277
278	static reqq req_queue;
279	static reqq res_queue;
280
281	int reqq_push (reqq *q, aio_req req)
282	{
283	int pri = req->pri;
284	req->next = 0;
285
286	if (q->qe[pri])
287	{
288	q->qe[pri]->next = req;
289	q->qe[pri] = req;
290	}
291	else
292	q->qe[pri] = q->qs[pri] = req;
293
294	return q->size++;
295	}
296
297	aio_req reqq_shift (reqq *q)
298	{
299	int pri;
300
301	if (!q->size)
302	return 0;
303
304	--q->size;
305
306	for (pri = NUM_PRI; pri--; )
307	{
308	aio_req req = q->qs[pri];
309
310	if (req)
311	{
312	if (!(q->qs[pri] = req->next))
313	q->qe[pri] = 0;
314
315	return req;
316	}
317	}
318
319	abort ();
320	}
321
322	static int poll_cb ();
323	static void req_invoke (aio_req req);
324	static void req_free (aio_req req);	330	static void req_destroy (aio_req req);
325	static void req_cancel (aio_req req);	331	static void req_cancel (aio_req req);
326		332
		333	static void want_poll (void)
		334	{
		335	/* write a dummy byte to the pipe so fh becomes ready */
		336	s_epipe_signal (&respipe);
		337	}
		338
		339	static void done_poll (void)
		340	{
		341	/* read any signals sent by the worker threads */
		342	s_epipe_drain (&respipe);
		343	}
		344
327	/* must be called at most once */	345	/* must be called at most once */
328	static SV *req_sv (aio_req req, const char *klass)	346	static SV *req_sv (aio_req req, HV *stash)
329	{	347	{
330	if (!req->self)	348	if (!req->self)
331	{	349	{
332	req->self = (SV *)newHV ();	350	req->self = (SV *)newHV ();
333	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	351	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334	}	352	}
335		353
336	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	354	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337	}	355	}
338		356
339	static aio_req SvAIO_REQ (SV *sv)	357	static aio_req SvAIO_REQ (SV *sv)
340	{	358	{
341	MAGIC *mg;	359	MAGIC *mg;
342		360
343	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	361	if (!SvROK (sv)
		362	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		363	&& SvSTASH (SvRV (sv)) != aio_req_stash
		364	&& !sv_derived_from (sv, "IO::AIO::REQ")))
344	croak ("object of class " AIO_REQ_KLASS " expected");	365	croak ("object of class IO::AIO::REQ expected");
345		366
346	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	367	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347		368
348	return mg ? (aio_req)mg->mg_ptr : 0;	369	return mg ? (aio_req)mg->mg_ptr : 0;
349	}	370	}
350		371
351	static void aio_grp_feed (aio_req grp)	372	static void aio_grp_feed (aio_req grp)
352	{	373	{
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	374	if (grp->sv2 && SvOK (grp->sv2))
354	{	375	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	376	dSP;
360		377
361	ENTER;	378	ENTER;
362	SAVETMPS;	379	SAVETMPS;
363	PUSHMARK (SP);	380	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	381	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	382	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	384	SPAGAIN;
368	FREETMPS;	385	FREETMPS;
369	LEAVE;	386	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	387	}
380	}	388	}
381		389
382	static void aio_grp_dec (aio_req grp)	390	static void req_submit (eio_req *req)
383	{	391	{
384	--grp->size;	392	eio_submit (req);
385		393
386	/* call feeder, if applicable */	394	if (expect_false (on_next_submit))
387	aio_grp_feed (grp);
388
389	/* finish, if done */
390	if (!grp->size && grp->int1)
391	{	395	{
392	req_invoke (grp);	396	dSP;
393	req_free (grp);	397	SV *cb = sv_2mortal (on_next_submit);
		398
		399	on_next_submit = 0;
		400
		401	PUSHMARK (SP);
		402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
394	}	404	}
395	}	405	}
396		406
397	static void req_invoke (aio_req req)	407	static int req_invoke (eio_req *req)
398	{	408	{
399	dSP;
400
401	if (req->flags & FLAG_DATA_RO_OFF)	409	if (req->flags & FLAG_SV2_RO_OFF)
402	SvREADONLY_off (req->sv1);	410	SvREADONLY_off (req->sv2);
403		411
404	if (req->statdata)	412	if (!EIO_CANCELLED (req) && req->callback)
405	{	413	{
406	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	414	dSP;
407	PL_laststatval = req->result;	415	static SV *sv_result_cache; /* caches the result integer SV */
408	PL_statcache = *(req->statdata);	416	SV *sv_result;
409	}
410		417
411	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412	{
413	ENTER;	418	ENTER;
414	SAVETMPS;	419	SAVETMPS;
415	PUSHMARK (SP);	420	PUSHMARK (SP);
416	EXTEND (SP, 1);	421	EXTEND (SP, 1);
417		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
		425	{
		426	sv_result = sv_result_cache; sv_result_cache = 0;
		427	SvIV_set (sv_result, req->result);
		428	SvIOK_only (sv_result);
		429	}
		430	else
		431	{
		432	sv_result = newSViv (req->result);
		433	SvREADONLY_on (sv_result);
		434	}
		435
418	switch (req->type)	436	switch (req->type)
419	{	437	{
420	case REQ_READDIR:	438	case EIO_READDIR:
421	{	439	{
422	SV *rv = &PL_sv_undef;	440	SV *rv = &PL_sv_undef;
423		441
424	if (req->result >= 0)	442	if (req->result >= 0)
425	{	443	{
426	int i;	444	int i;
427	char *buf = req->ptr2;	445	char *names = (char *)req->ptr2;
		446	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428	AV *av = newAV ();	447	AV *av = newAV ();
429		448
430	av_extend (av, req->result - 1);	449	av_extend (av, req->result - 1);
431		450
432	for (i = 0; i < req->result; ++i)	451	for (i = 0; i < req->result; ++i)
433	{	452	{
434	SV *sv = newSVpv (buf, 0);	453	if (req->int1 & EIO_READDIR_DENTS)
		454	{
		455	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435		456
		457	if (req->int1 & EIO_READDIR_CUSTOM2)
		458	{
		459	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		460	AV *avent = newAV ();
		461
		462	av_extend (avent, 2);
		463
		464	if (!sv_type [ent->type])
		465	{
		466	sv_type [ent->type] = newSViv (ent->type);
		467	SvREADONLY_on (sv_type [ent->type]);
		468	}
		469
		470	av_store (avent, 0, namesv);
		471	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		472	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		473
		474	av_store (av, i, newRV_noinc ((SV *)avent));
		475	}
		476	else
436	av_store (av, i, sv);	477	av_store (av, i, namesv);
		478
		479	++ent;
		480	}
		481	else
		482	{
		483	SV *name = newSVpv (names, 0);
		484	av_store (av, i, name);
437	buf += SvCUR (sv) + 1;	485	names += SvCUR (name) + 1;
		486	}
438	}	487	}
439		488
440	rv = sv_2mortal (newRV_noinc ((SV *)av));	489	rv = sv_2mortal (newRV_noinc ((SV *)av));
441	}	490	}
442		491
443	PUSHs (rv);	492	PUSHs (rv);
		493
		494	if (req->int1 & EIO_READDIR_CUSTOM1)
		495	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
444	}	496	}
445	break;	497	break;
446		498
447	case REQ_OPEN:	499	case EIO_OPEN:
448	{	500	{
449	/* convert fd to fh */	501	/* convert fd to fh */
450	SV *fh;	502	SV *fh = &PL_sv_undef;
451		503
452	PUSHs (sv_2mortal (newSViv (req->result)));	504	if (req->result >= 0)
453	PUTBACK;	505	{
454	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	506	GV *gv = (GV *)sv_newmortal ();
455	SPAGAIN;	507	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		508	char sym [64];
		509	int symlen;
		510
		511	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		512	gv_init (gv, aio_stash, sym, symlen, 0);
456		513
457	fh = SvREFCNT_inc (POPs);	514	symlen = snprintf (
		515	sym,
		516	sizeof (sym),
		517	"%s&=%d",
		518	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		519	(int)req->result
		520	);
458		521
		522	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		523	fh = (SV *)gv;
		524	}
		525
459	PUSHMARK (SP);	526	PUSHs (fh);
460	XPUSHs (sv_2mortal (fh));
461	}	527	}
462	break;	528	break;
463		529
		530	case EIO_STATVFS:
		531	case EIO_FSTATVFS:
		532	{
		533	SV *rv = &PL_sv_undef;
		534
		535	if (req->result >= 0)
		536	{
		537	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		538	HV *hv = newHV ();
		539
		540	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		541
		542	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		543	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		544	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		545	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		546	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		547	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		548	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		549	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		550	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		551	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		552	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		553	}
		554
		555	PUSHs (rv);
		556	}
		557
		558	break;
		559
464	case REQ_GROUP:	560	case EIO_GROUP:
465	req->int1 = 2; /* mark group as finished */	561	req->int1 = 2; /* mark group as finished */
466		562
467	if (req->sv1)	563	if (req->sv1)
468	{	564	{
469	int i;	565	int i;
…		…
473	for (i = 0; i <= AvFILL (av); ++i)	569	for (i = 0; i <= AvFILL (av); ++i)
474	PUSHs (*av_fetch (av, i, 0));	570	PUSHs (*av_fetch (av, i, 0));
475	}	571	}
476	break;	572	break;
477		573
478	case REQ_NOP:	574	case EIO_NOP:
479	case REQ_BUSY:	575	case EIO_BUSY:
480	break;	576	break;
481		577
482	case REQ_READLINK:	578	case EIO_READLINK:
		579	case EIO_REALPATH:
483	if (req->result > 0)	580	if (req->result > 0)
484	{	581	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
485	SvCUR_set (req->sv1, req->result);
486	*SvEND (req->sv1) = 0;
487	PUSHs (req->sv1);
488	}
489	break;	582	break;
490		583
		584	case EIO_STAT:
		585	case EIO_LSTAT:
		586	case EIO_FSTAT:
		587	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		588	PL_laststatval = req->result;
		589	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		590	PUSHs (sv_result);
		591	break;
		592
491	case REQ_READ:	593	case EIO_READ:
		594	{
492	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	595	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
493	*SvEND (req->sv1) = 0;	596	*SvEND (req->sv2) = 0;
494	/* fall through */	597	SvPOK_only (req->sv2);
		598	SvSETMAGIC (req->sv2);
		599	PUSHs (sv_result);
		600	}
		601	break;
		602
		603	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		604	if (req->result > 0)
		605	SvIV_set (sv_result, 0);
		606	/* FALLTHROUGH */
		607
495	default:	608	default:
496	PUSHs (sv_2mortal (newSViv (req->result)));	609	PUSHs (sv_result);
497	break;	610	break;
498	}	611	}
499		612
500	errno = req->errorno;	613	errno = req->errorno;
501		614
502	PUTBACK;	615	PUTBACK;
503	call_sv (req->callback, G_VOID | G_EVAL);	616	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504	SPAGAIN;	617	SPAGAIN;
		618
		619	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		620	SvREFCNT_dec (sv_result);
		621	else
		622	sv_result_cache = sv_result;
505		623
506	FREETMPS;	624	FREETMPS;
507	LEAVE;	625	LEAVE;
		626
		627	PUTBACK;
508	}	628	}
509		629
510	if (req->grp)	630	return !!SvTRUE (ERRSV);
511	{
512	aio_req grp = req->grp;
513
514	/* unlink request */
515	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518	if (grp->grp_first == req)
519	grp->grp_first = req->grp_next;
520
521	aio_grp_dec (grp);
522	}
523
524	if (SvTRUE (ERRSV))
525	{
526	req_free (req);
527	croak (0);
528	}
529	}	631	}
530		632
531	static void req_free (aio_req req)	633	static void req_destroy (aio_req req)
532	{	634	{
533	if (req->self)	635	if (req->self)
534	{	636	{
535	sv_unmagic (req->self, PERL_MAGIC_ext);	637	sv_unmagic (req->self, PERL_MAGIC_ext);
536	SvREFCNT_dec (req->self);	638	SvREFCNT_dec (req->self);
537	}	639	}
538		640
539	SvREFCNT_dec (req->fh);
540	SvREFCNT_dec (req->sv1);	641	SvREFCNT_dec (req->sv1);
541	SvREFCNT_dec (req->sv2);	642	SvREFCNT_dec (req->sv2);
542	SvREFCNT_dec (req->callback);	643	SvREFCNT_dec (req->callback);
543	Safefree (req->statdata);
544
545	if (req->type == REQ_READDIR)
546	free (req->ptr2);
547		644
548	Safefree (req);	645	Safefree (req);
549	}	646	}
550		647
551	static void req_cancel_subs (aio_req grp)	648	static void req_cancel_subs (aio_req grp)
552	{	649	{
553	aio_req sub;	650	aio_req sub;
554		651
555	if (grp->type != REQ_GROUP)	652	if (grp->type != EIO_GROUP)
556	return;	653	return;
557		654
558	SvREFCNT_dec (grp->sv2);	655	SvREFCNT_dec (grp->sv2);
559	grp->sv2 = 0;	656	grp->sv2 = 0;
560		657
561	for (sub = grp->grp_first; sub; sub = sub->grp_next)	658	eio_grp_cancel (grp);
562	req_cancel (sub);
563	}	659	}
564		660
565	static void req_cancel (aio_req req)	661	static void create_respipe (void)
566	{	662	{
567	req->flags |= FLAG_CANCELLED;	663	if (s_epipe_renew (&respipe))
568		664	croak ("IO::AIO: unable to initialize result pipe");
569	req_cancel_subs (req);
570	}	665	}
571		666
572	static void *aio_proc(void *arg);
573
574	static void start_thread (void)
575	{
576	sigset_t fullsigset, oldsigset;
577	pthread_attr_t attr;
578
579	worker *wrk = calloc (1, sizeof (worker));
580
581	if (!wrk)
582	croak ("unable to allocate worker thread data");
583
584	pthread_attr_init (&attr);
585	pthread_attr_setstacksize (&attr, STACKSIZE);
586	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587	#ifdef PTHREAD_SCOPE_PROCESS
588	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589	#endif
590
591	sigfillset (&fullsigset);
592
593	LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597	{
598	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;
600	wrk_first.next->prev = wrk;
601	wrk_first.next = wrk;
602	++started;
603	}
604	else
605	free (wrk);
606
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);
609	}
610
611	static void maybe_start_thread ()
612	{
613	if (get_nthreads () >= wanted)
614	return;
615
616	/* todo: maybe use idle here, but might be less exact */
617	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618	return;
619
620	start_thread ();
621	}
622
623	static void req_send (aio_req req)
624	{
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632
633	maybe_start_thread ();
634	}
635
636	static void end_thread (void)
637	{
638	aio_req req;
639
640	Newz (0, req, 1, aio_cb);
641
642	req->type = REQ_QUIT;
643	req->pri = PRI_MAX + PRI_BIAS;
644
645	LOCK (reqlock);
646	reqq_push (&req_queue, req);
647	pthread_cond_signal (&reqwait);
648	UNLOCK (reqlock);
649
650	LOCK (wrklock);
651	--started;
652	UNLOCK (wrklock);
653	}
654
655	static void set_max_idle (int nthreads)
656	{
657	if (WORDACCESS_UNSAFE) LOCK (reqlock);
658	max_idle = nthreads <= 0 ? 1 : nthreads;
659	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660	}
661
662	static void min_parallel (int nthreads)
663	{
664	if (wanted < nthreads)
665	wanted = nthreads;
666	}
667
668	static void max_parallel (int nthreads)
669	{
670	if (wanted > nthreads)
671	wanted = nthreads;
672
673	while (started > wanted)
674	end_thread ();
675	}
676
677	static void poll_wait ()	667	static void poll_wait (void)
678	{	668	{
679	fd_set rfd;
680
681	while (nreqs)	669	while (eio_nreqs ())
682	{	670	{
683	int size;	671	int size;
684	if (WORDACCESS_UNSAFE) LOCK (reslock);	672
		673	X_LOCK (reslock);
685	size = res_queue.size;	674	size = res_queue.size;
686	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	675	X_UNLOCK (reslock);
687		676
688	if (size)	677	if (size)
689	return;	678	return;
690		679
691	maybe_start_thread ();	680	etp_maybe_start_thread ();
692		681
693	FD_ZERO(&rfd);	682	s_epipe_wait (&respipe);
694	FD_SET(respipe [0], &rfd);
695
696	select (respipe [0] + 1, &rfd, 0, 0, 0);
697	}	683	}
698	}	684	}
699		685
700	static int poll_cb ()	686	static int poll_cb (void)
701	{	687	{
702	dSP;
703	int count = 0;
704	int maxreqs = max_poll_reqs;
705	int do_croak = 0;
706	struct timeval tv_start, tv_now;
707	aio_req req;
708
709	if (max_poll_time)
710	gettimeofday (&tv_start, 0);
711
712	for (;;)	688	for (;;)
713	{	689	{
714	for (;;)	690	int res = eio_poll ();
715	{
716	maybe_start_thread ();
717		691
718	LOCK (reslock);	692	if (res > 0)
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [32];
729	while (read (respipe [0], buf, 32) == 32)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	req_invoke (req);
749
750	count++;
751	}
752
753	req_free (req);
754
755	if (maxreqs && !--maxreqs)
756	break;
757
758	if (max_poll_time)
759	{
760	gettimeofday (&tv_now, 0);
761
762	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763	break;
764	}
765	}
766
767	if (nreqs <= max_outstanding)
768	break;	693	croak (0);
		694
		695	if (!max_outstanding || max_outstanding > eio_nreqs ())
		696	return res;
769		697
770	poll_wait ();	698	poll_wait ();
771
772	++maxreqs;
773	}	699	}
774
775	return count;
776	}	700	}
777		701
778	static void create_pipe ()	702	static void atfork_child (void)
779	{	703	{
780	if (pipe (respipe))	704	create_respipe ();
781	croak ("unable to initialize result pipe");
782
783	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784	croak ("cannot set result pipe to nonblocking mode");
785
786	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787	croak ("cannot set result pipe to nonblocking mode");
788	}	705	}
789		706
790	/*****************************************************************************/	707	/*****************************************************************************/
791	/* work around various missing functions */
792		708
793	#if !HAVE_PREADWRITE	709	#if !_POSIX_MAPPED_FILES
794	# define pread aio_pread	710	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
795	# define pwrite aio_pwrite	711	# define munmap(addr,length) (errno = ENOSYS, -1)
796
797	/*
798	* make our pread/pwrite safe against themselves, but not against
799	* normal read/write by using a mutex. slows down execution a lot,
800	* but that's your problem, not mine.
801	*/
802	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805	{
806	ssize_t res;
807	off_t ooffset;
808
809	LOCK (preadwritelock);
810	ooffset = lseek (fd, 0, SEEK_CUR);
811	lseek (fd, offset, SEEK_SET);
812	res = read (fd, buf, count);
813	lseek (fd, ooffset, SEEK_SET);
814	UNLOCK (preadwritelock);
815
816	return res;
817	}
818
819	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
820	{
821	ssize_t res;
822	off_t ooffset;
823
824	LOCK (preadwritelock);
825	ooffset = lseek (fd, 0, SEEK_CUR);
826	lseek (fd, offset, SEEK_SET);
827	res = write (fd, buf, count);
828	lseek (fd, offset, SEEK_SET);
829	UNLOCK (preadwritelock);
830
831	return res;
832	}
833	#endif
834
835	#if !HAVE_FDATASYNC
836	# define fdatasync fsync
837	#endif
838
839	#if !HAVE_READAHEAD
840	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841
842	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
843	{
844	dBUF;
845
846	while (count > 0)
847	{
848	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849
850	pread (fd, aio_buf, len, offset);
851	offset += len;
852	count -= len;
853	}
854
855	errno = 0;
856	}
857
858	#endif
859
860	#if !HAVE_READDIR_R
861	# define readdir_r aio_readdir_r
862
863	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866	{
867	struct dirent *e;
868	int errorno;
869
870	LOCK (readdirlock);
871
872	e = readdir (dirp);
873	errorno = errno;
874
875	if (e)
876	{
877	*res = ent;
878	strcpy (ent->d_name, e->d_name);
879	}
880	else
881	*res = 0;
882
883	UNLOCK (readdirlock);
884
885	errno = errorno;
886	return e ? 0 : -1;
887	}
888	#endif
889
890	/* sendfile always needs emulation */
891	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
892	{
893	ssize_t res;
894
895	if (!count)
896	return 0;
897
898	#if HAVE_SENDFILE
899	# if __linux
900	res = sendfile (ofd, ifd, &offset, count);
901
902	# elif __freebsd
903	/*
904	* Of course, the freebsd sendfile is a dire hack with no thoughts
905	* wasted on making it similar to other I/O functions.
906	*/
907	{
908	off_t sbytes;
909	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910
911	if (res < 0 && sbytes)
912	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
913	res = sbytes;
914	}
915
916	# elif __hpux
917	res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919	# elif __solaris
920	{
921	struct sendfilevec vec;
922	size_t sbytes;
923
924	vec.sfv_fd = ifd;
925	vec.sfv_flag = 0;
926	vec.sfv_off = offset;
927	vec.sfv_len = count;
928
929	res = sendfilev (ofd, &vec, 1, &sbytes);
930
931	if (res < 0 && sbytes)
932	res = sbytes;
933	}
934
935	# endif	712	#endif
936	#else
937	res = -1;
938	errno = ENOSYS;
939	#endif
940		713
941	if (res < 0	714	#if !_POSIX_MEMORY_PROTECTION
942	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	715	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
943	#if __solaris	716	# define PROT_NONE 0
944	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
945	#endif	721	#endif
946	)
947	)
948	{
949	/* emulate sendfile. this is a major pain in the ass */
950	dBUF;
951		722
952	res = 0;	723	#define MMAP_MAGIC PERL_MAGIC_ext
953		724
954	while (count)	725	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
955	{	726	{
956	ssize_t cnt;	727	int old_errno = errno;
957		728	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
958	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	729	errno = old_errno;
959		730
960	if (cnt <= 0)	731	mg->mg_obj = 0; /* just in case */
961	{
962	if (cnt && !res) res = -1;
963	break;
964	}
965		732
966	cnt = write (ofd, aio_buf, cnt);	733	SvREADONLY_off (sv);
967		734
968	if (cnt <= 0)	735	if (SvPVX (sv) != mg->mg_ptr)
969	{	736	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
970	if (cnt && !res) res = -1;
971	break;
972	}
973		737
974	offset += cnt;	738	SvCUR_set (sv, 0);
975	res += cnt;	739	SvPVX (sv) = 0;
976	count -= cnt;	740	SvOK_off (sv);
977	}
978	}
979		741
980	return res;	742	return 0;
981	}	743	}
982		744
983	/* read a full directory */	745	static MGVTBL mmap_vtbl = {
984	static void scandir_ (aio_req req, worker *self)	746	0, 0, 0, 0, mmap_free
985	{	747	};
986	DIR *dirp;
987	union
988	{
989	struct dirent d;
990	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991	} *u;
992	struct dirent *entp;
993	char *name, *names;
994	int memlen = 4096;
995	int memofs = 0;
996	int res = 0;
997	int errorno;
998
999	LOCK (wrklock);
1000	self->dirp = dirp = opendir (req->ptr1);
1001	self->dbuf = u = malloc (sizeof (*u));
1002	req->ptr2 = names = malloc (memlen);
1003	UNLOCK (wrklock);
1004
1005	if (dirp && u && names)
1006	for (;;)
1007	{
1008	errno = 0;
1009	readdir_r (dirp, &u->d, &entp);
1010
1011	if (!entp)
1012	break;
1013
1014	name = entp->d_name;
1015
1016	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017	{
1018	int len = strlen (name) + 1;
1019
1020	res++;
1021
1022	while (memofs + len > memlen)
1023	{
1024	memlen *= 2;
1025	LOCK (wrklock);
1026	req->ptr2 = names = realloc (names, memlen);
1027	UNLOCK (wrklock);
1028
1029	if (!names)
1030	break;
1031	}
1032
1033	memcpy (names + memofs, name, len);
1034	memofs += len;
1035	}
1036	}
1037
1038	if (errno)
1039	res = -1;
1040
1041	req->result = res;
1042	}
1043		748
1044	/*****************************************************************************/	749	/*****************************************************************************/
1045		750
1046	static void *aio_proc (void *thr_arg)	751	static SV * get_cb (SV *cb_sv)
1047	{	752	{
1048	aio_req req;	753	SvGETMAGIC (cb_sv);
1049	struct timespec ts;	754	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1050	worker *self = (worker *)thr_arg;
1051
1052	/* try to distribute timeouts somewhat evenly */
1053	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054	* (1000000000UL / 1024UL);
1055
1056	for (;;)
1057	{
1058	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060	LOCK (reqlock);
1061
1062	for (;;)
1063	{
1064	self->req = req = reqq_shift (&req_queue);
1065
1066	if (req)
1067	break;
1068
1069	++idle;
1070
1071	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072	== ETIMEDOUT)
1073	{
1074	if (idle > max_idle)
1075	{
1076	--idle;
1077	UNLOCK (reqlock);
1078	LOCK (wrklock);
1079	--started;
1080	UNLOCK (wrklock);
1081	goto quit;
1082	}
1083
1084	/* we are allowed to idle, so do so without any timeout */
1085	pthread_cond_wait (&reqwait, &reqlock);
1086	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087	}
1088
1089	--idle;
1090	}
1091
1092	--nready;
1093
1094	UNLOCK (reqlock);
1095
1096	errno = 0; /* strictly unnecessary */
1097
1098	if (!(req->flags & FLAG_CANCELLED))
1099	switch (req->type)
1100	{
1101	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107	case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108	case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109	case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112	case REQ_CLOSE: req->result = close (req->int1); break;
1113	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122	case REQ_FSYNC: req->result = fsync (req->int1); break;
1123	case REQ_READDIR: scandir_ (req, self); break;
1124
1125	case REQ_BUSY:
1126	{
1127	struct timeval tv;
1128
1129	tv.tv_sec = req->int1;
1130	tv.tv_usec = req->int2;
1131
1132	req->result = select (0, 0, 0, 0, &tv);
1133	}
1134
1135	case REQ_GROUP:
1136	case REQ_NOP:
1137	break;
1138
1139	case REQ_QUIT:
1140	goto quit;
1141
1142	default:
1143	req->result = ENOSYS;
1144	break;
1145	}
1146
1147	req->errorno = errno;
1148
1149	LOCK (reslock);
1150
1151	++npending;
1152
1153	if (!reqq_push (&res_queue, req))
1154	/* write a dummy byte to the pipe so fh becomes ready */
1155	write (respipe [1], &respipe, 1);
1156
1157	self->req = 0;
1158	worker_clear (self);
1159
1160	UNLOCK (reslock);
1161	}
1162
1163	quit:
1164	LOCK (wrklock);
1165	worker_free (self);
1166	UNLOCK (wrklock);
1167
1168	return 0;
1169	}
1170
1171	/*****************************************************************************/
1172
1173	static void atfork_prepare (void)
1174	{
1175	LOCK (wrklock);
1176	LOCK (reqlock);
1177	LOCK (reslock);
1178	#if !HAVE_PREADWRITE
1179	LOCK (preadwritelock);
1180	#endif
1181	#if !HAVE_READDIR_R
1182	LOCK (readdirlock);
1183	#endif
1184	}
1185
1186	static void atfork_parent (void)
1187	{
1188	#if !HAVE_READDIR_R
1189	UNLOCK (readdirlock);
1190	#endif
1191	#if !HAVE_PREADWRITE
1192	UNLOCK (preadwritelock);
1193	#endif
1194	UNLOCK (reslock);
1195	UNLOCK (reqlock);
1196	UNLOCK (wrklock);
1197	}
1198
1199	static void atfork_child (void)
1200	{
1201	aio_req prv;
1202
1203	while (prv = reqq_shift (&req_queue))
1204	req_free (prv);
1205
1206	while (prv = reqq_shift (&res_queue))
1207	req_free (prv);
1208
1209	while (wrk_first.next != &wrk_first)
1210	{
1211	worker *wrk = wrk_first.next;
1212
1213	if (wrk->req)
1214	req_free (wrk->req);
1215
1216	worker_clear (wrk);
1217	worker_free (wrk);
1218	}
1219
1220	started = 0;
1221	idle = 0;
1222	nreqs = 0;
1223	nready = 0;
1224	npending = 0;
1225
1226	close (respipe [0]);
1227	close (respipe [1]);
1228	create_pipe ();
1229
1230	atfork_parent ();
1231	}	755	}
1232		756
1233	#define dREQ \	757	#define dREQ \
		758	SV *cb_cv; \
1234	aio_req req; \	759	aio_req req; \
1235	int req_pri = next_pri; \	760	int req_pri = next_pri; \
1236	next_pri = DEFAULT_PRI + PRI_BIAS; \	761	next_pri = EIO_PRI_DEFAULT; \
1237	\	762	\
1238	if (SvOK (callback) && !SvROK (callback)) \	763	cb_cv = get_cb (callback); \
1239	croak ("callback must be undef or of reference type"); \
1240	\	764	\
1241	Newz (0, req, 1, aio_cb); \	765	Newz (0, req, 1, eio_req); \
1242	if (!req) \	766	if (!req) \
1243	croak ("out of memory during aio_req allocation"); \	767	croak ("out of memory during eio_req allocation"); \
1244	\	768	\
1245	req->callback = newSVsv (callback); \	769	req->callback = SvREFCNT_inc (cb_cv); \
1246	req->pri = req_pri	770	req->pri = req_pri
1247		771
1248	#define REQ_SEND \	772	#define REQ_SEND \
		773	PUTBACK; \
1249	req_send (req); \	774	req_submit (req); \
		775	SPAGAIN; \
1250	\	776	\
1251	if (GIMME_V != G_VOID) \	777	if (GIMME_V != G_VOID) \
1252	XPUSHs (req_sv (req, AIO_REQ_KLASS));	778	XPUSHs (req_sv (req, aio_req_stash));
1253		779
1254	MODULE = IO::AIO PACKAGE = IO::AIO	780	MODULE = IO::AIO PACKAGE = IO::AIO
1255		781
1256	PROTOTYPES: ENABLE	782	PROTOTYPES: ENABLE
1257		783
1258	BOOT:	784	BOOT:
1259	{	785	{
		786	static const struct {
		787	const char *name;
		788	IV iv;
		789	} *civ, const_iv[] = {
		790	# define const_niv(name, value) { # name, (IV) value },
		791	# define const_iv(name) { # name, (IV) name },
		792	# define const_eio(name) { # name, (IV) EIO_ ## name },
		793	const_iv (EXDEV)
		794	const_iv (ENOSYS)
		795	const_iv (O_RDONLY)
		796	const_iv (O_WRONLY)
		797	const_iv (O_RDWR)
		798	const_iv (O_CREAT)
		799	const_iv (O_TRUNC)
		800	const_iv (O_EXCL)
		801	const_iv (O_APPEND)
		802
		803	const_iv (O_ASYNC)
		804	const_iv (O_DIRECT)
		805	const_iv (O_NOATIME)
		806
		807	const_iv (O_CLOEXEC)
		808	const_iv (O_NOCTTY)
		809	const_iv (O_NOFOLLOW)
		810	const_iv (O_NONBLOCK)
		811	const_iv (O_EXEC)
		812	const_iv (O_SEARCH)
		813	const_iv (O_DIRECTORY)
		814	const_iv (O_DSYNC)
		815	const_iv (O_RSYNC)
		816	const_iv (O_SYNC)
		817	const_iv (O_TTY_INIT)
		818
		819	const_iv (S_IFIFO)
		820	const_iv (S_IFCHR)
		821	const_iv (S_IFBLK)
		822	const_iv (S_IFLNK)
		823	const_iv (S_IFREG)
		824	const_iv (S_IFDIR)
		825	const_iv (S_IFWHT)
		826	const_iv (S_IFSOCK)
		827	const_iv (S_IFMT)
		828
		829	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		830	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		831	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		832	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		833	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		834	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		835
		836	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		837	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		838	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		839	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		840	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		841
		842	const_iv (ST_RDONLY)
		843	const_iv (ST_NOSUID)
		844	const_iv (ST_NODEV)
		845	const_iv (ST_NOEXEC)
		846	const_iv (ST_SYNCHRONOUS)
		847	const_iv (ST_MANDLOCK)
		848	const_iv (ST_WRITE)
		849	const_iv (ST_APPEND)
		850	const_iv (ST_IMMUTABLE)
		851	const_iv (ST_NOATIME)
		852	const_iv (ST_NODIRATIME)
		853	const_iv (ST_RELATIME)
		854
		855	const_iv (PROT_NONE)
		856	const_iv (PROT_EXEC)
		857	const_iv (PROT_READ)
		858	const_iv (PROT_WRITE)
		859
		860	/*const_iv (MAP_FIXED)*/
		861	const_iv (MAP_PRIVATE)
		862	const_iv (MAP_SHARED)
		863	const_iv (MAP_ANONYMOUS)
		864
		865	/* linuxish */
		866	const_iv (MAP_HUGETLB)
		867	const_iv (MAP_LOCKED)
		868	const_iv (MAP_NORESERVE)
		869	const_iv (MAP_POPULATE)
		870	const_iv (MAP_NONBLOCK)
		871
		872	const_eio (MCL_FUTURE)
		873	const_eio (MCL_CURRENT)
		874
		875	const_eio (MS_ASYNC)
		876	const_eio (MS_INVALIDATE)
		877	const_eio (MS_SYNC)
		878
		879	const_eio (MT_MODIFY)
		880
		881	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		882	const_eio (SYNC_FILE_RANGE_WRITE)
		883	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		884
		885	const_eio (FALLOC_FL_KEEP_SIZE)
		886
		887	const_eio (READDIR_DENTS)
		888	const_eio (READDIR_DIRS_FIRST)
		889	const_eio (READDIR_STAT_ORDER)
		890	const_eio (READDIR_FOUND_UNKNOWN)
		891
		892	const_eio (DT_UNKNOWN)
		893	const_eio (DT_FIFO)
		894	const_eio (DT_CHR)
		895	const_eio (DT_DIR)
		896	const_eio (DT_BLK)
		897	const_eio (DT_REG)
		898	const_eio (DT_LNK)
		899	const_eio (DT_SOCK)
		900	const_eio (DT_WHT)
		901	};
		902
1260	HV *stash = gv_stashpv ("IO::AIO", 1);	903	aio_stash = gv_stashpv ("IO::AIO" , 1);
		904	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		905	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1261		906
1262	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	907	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1263	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	908	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1264	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1267	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1268		909
		910	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		911
1269	create_pipe ();	912	create_respipe ();
1270	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1271	}
1272		913
		914	if (eio_init (want_poll, done_poll) < 0)
		915	croak ("IO::AIO: unable to initialise eio library");
		916
		917	/* atfork child called in fifo order, so before eio's handler */
		918	X_THREAD_ATFORK (0, 0, atfork_child);
		919	}
		920
1273	void	921	void
1274	max_poll_reqs (int nreqs)	922	max_poll_reqs (unsigned int nreqs)
1275	PROTOTYPE: $	923	PROTOTYPE: $
1276	CODE:	924	CODE:
1277	max_poll_reqs = nreqs;	925	eio_set_max_poll_reqs (nreqs);
1278		926
1279	void	927	void
1280	max_poll_time (double nseconds)	928	max_poll_time (double nseconds)
1281	PROTOTYPE: $	929	PROTOTYPE: $
1282	CODE:	930	CODE:
1283	max_poll_time = nseconds * AIO_TICKS;	931	eio_set_max_poll_time (nseconds);
1284		932
1285	void	933	void
1286	min_parallel (int nthreads)	934	min_parallel (unsigned int nthreads)
1287	PROTOTYPE: $
1288
1289	void
1290	max_parallel (int nthreads)
1291	PROTOTYPE: $
1292
1293	void
1294	max_idle (int nthreads)
1295	PROTOTYPE: $	935	PROTOTYPE: $
1296	CODE:	936	CODE:
1297	set_max_idle (nthreads);	937	eio_set_min_parallel (nthreads);
1298		938
1299	int	939	void
1300	max_outstanding (int maxreqs)	940	max_parallel (unsigned int nthreads)
1301	PROTOTYPE: $	941	PROTOTYPE: $
1302	CODE:	942	CODE:
1303	RETVAL = max_outstanding;	943	eio_set_max_parallel (nthreads);
		944
		945	void
		946	max_idle (unsigned int nthreads)
		947	PROTOTYPE: $
		948	CODE:
		949	eio_set_max_idle (nthreads);
		950
		951	void
		952	idle_timeout (unsigned int seconds)
		953	PROTOTYPE: $
		954	CODE:
		955	eio_set_idle_timeout (seconds);
		956
		957	void
		958	max_outstanding (unsigned int maxreqs)
		959	PROTOTYPE: $
		960	CODE:
1304	max_outstanding = maxreqs;	961	max_outstanding = maxreqs;
1305	OUTPUT:
1306	RETVAL
1307		962
1308	void	963	void
1309	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	964	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1310	SV * pathname
1311	int flags
1312	int mode
1313	SV * callback
1314	PROTOTYPE: $$$;$
1315	PPCODE:	965	PPCODE:
1316	{	966	{
1317	dREQ;	967	dREQ;
1318		968
1319	req->type = REQ_OPEN;	969	req->type = EIO_OPEN;
1320	req->sv1 = newSVsv (pathname);	970	req->sv1 = newSVsv (pathname);
1321	req->ptr1 = SvPVbyte_nolen (pathname);	971	req->ptr1 = SvPVbyte_nolen (req->sv1);
1322	req->int1 = flags;	972	req->int1 = flags;
1323	req->mode = mode;	973	req->int2 = mode;
1324		974
1325	REQ_SEND;	975	REQ_SEND;
1326	}	976	}
1327		977
1328	void	978	void
1329	aio_close (fh,callback=&PL_sv_undef)	979	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330	SV * fh
1331	SV * callback
1332	PROTOTYPE: $;$
1333	ALIAS:	980	ALIAS:
1334	aio_close = REQ_CLOSE
1335	aio_fsync = REQ_FSYNC	981	aio_fsync = EIO_FSYNC
1336	aio_fdatasync = REQ_FDATASYNC	982	aio_fdatasync = EIO_FDATASYNC
1337	PPCODE:	983	PPCODE:
1338	{	984	{
		985	int fd = s_fileno_croak (fh, 0);
1339	dREQ;	986	dREQ;
1340		987
1341	req->type = ix;	988	req->type = ix;
1342	req->fh = newSVsv (fh);	989	req->sv1 = newSVsv (fh);
1343	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	990	req->int1 = fd;
1344		991
1345	REQ_SEND (req);	992	REQ_SEND (req);
1346	}	993	}
1347		994
1348	void	995	void
		996	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		997	PPCODE:
		998	{
		999	int fd = s_fileno_croak (fh, 0);
		1000	dREQ;
		1001
		1002	req->type = EIO_SYNC_FILE_RANGE;
		1003	req->sv1 = newSVsv (fh);
		1004	req->int1 = fd;
		1005	req->offs = offset;
		1006	req->size = nbytes;
		1007	req->int2 = flags;
		1008
		1009	REQ_SEND (req);
		1010	}
		1011
		1012	void
		1013	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_FALLOCATE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->int2 = mode;
		1023	req->offs = offset;
		1024	req->size = len;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1034	int fd = s_fileno_croak (fh, 0);
		1035	dREQ;
		1036
		1037	if (close_pipe < 0)
		1038	{
		1039	int pipefd [2];
		1040
		1041	if (pipe (pipefd) < 0
		1042	|| close (pipefd [1]) < 0
		1043	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1044	abort (); /*D*/
		1045
		1046	close_pipe = pipefd [0];
		1047	}
		1048
		1049	req->type = EIO_DUP2;
		1050	req->int1 = close_pipe;
		1051	req->sv2 = newSVsv (fh);
		1052	req->int2 = fd;
		1053
		1054	REQ_SEND (req);
		1055	}
		1056
		1057	void
1349	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1058	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350	SV * fh
1351	UV offset
1352	UV length
1353	SV * data
1354	UV dataoffset
1355	SV * callback
1356	ALIAS:	1059	ALIAS:
1357	aio_read = REQ_READ	1060	aio_read = EIO_READ
1358	aio_write = REQ_WRITE	1061	aio_write = EIO_WRITE
1359	PROTOTYPE: $$$$$;$
1360	PPCODE:	1062	PPCODE:
1361	{	1063	{
1362	STRLEN svlen;	1064	STRLEN svlen;
		1065	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1363	char *svptr = SvPVbyte (data, svlen);	1066	char *svptr = SvPVbyte (data, svlen);
1364		1067	UV len = SvUV (length);
1365	SvUPGRADE (data, SVt_PV);
1366	SvPOK_on (data);
1367		1068
1368	if (dataoffset < 0)	1069	if (dataoffset < 0)
1369	dataoffset += svlen;	1070	dataoffset += svlen;
1370		1071
1371	if (dataoffset < 0 || dataoffset > svlen)	1072	if (dataoffset < 0 || dataoffset > svlen)
1372	croak ("data offset outside of string");	1073	croak ("dataoffset outside of data scalar");
1373		1074
1374	if (ix == REQ_WRITE)	1075	if (ix == EIO_WRITE)
1375	{	1076	{
1376	/* write: check length and adjust. */	1077	/* write: check length and adjust. */
1377	if (length < 0 || length + dataoffset > svlen)	1078	if (!SvOK (length) || len + dataoffset > svlen)
1378	length = svlen - dataoffset;	1079	len = svlen - dataoffset;
1379	}	1080	}
1380	else	1081	else
1381	{	1082	{
1382	/* read: grow scalar as necessary */	1083	/* read: check type and grow scalar as necessary */
		1084	SvUPGRADE (data, SVt_PV);
1383	svptr = SvGROW (data, length + dataoffset);	1085	svptr = SvGROW (data, len + dataoffset + 1);
1384	}	1086	}
1385
1386	if (length < 0)
1387	croak ("length must not be negative");
1388		1087
1389	{	1088	{
1390	dREQ;	1089	dREQ;
1391		1090
1392	req->type = ix;	1091	req->type = ix;
1393	req->fh = newSVsv (fh);	1092	req->sv1 = newSVsv (fh);
1394	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1093	req->int1 = fd;
1395	: IoOFP (sv_2io (fh)));	1094	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396	req->offs = offset;
1397	req->size = length;	1095	req->size = len;
1398	req->sv1 = SvREFCNT_inc (data);	1096	req->sv2 = SvREFCNT_inc (data);
1399	req->ptr1 = (char *)svptr + dataoffset;	1097	req->ptr2 = (char *)svptr + dataoffset;
1400	req->stroffset = dataoffset;	1098	req->stroffset = dataoffset;
1401		1099
1402	if (!SvREADONLY (data))	1100	if (!SvREADONLY (data))
1403	{	1101	{
1404	SvREADONLY_on (data);	1102	SvREADONLY_on (data);
1405	req->flags |= FLAG_DATA_RO_OFF;	1103	req->flags |= FLAG_SV2_RO_OFF;
1406	}	1104	}
1407		1105
1408	REQ_SEND;	1106	REQ_SEND;
1409	}	1107	}
1410	}	1108	}
1411		1109
1412	void	1110	void
1413	aio_readlink (path,callback=&PL_sv_undef)	1111	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1414	SV * path	1112	ALIAS:
1415	SV * callback	1113	aio_readlink = EIO_READLINK
1416	PROTOTYPE: $$;$	1114	aio_realpath = EIO_REALPATH
1417	PPCODE:	1115	PPCODE:
1418	{	1116	{
1419	SV *data;	1117	SV *data;
1420	dREQ;	1118	dREQ;
1421		1119
1422	data = newSV (NAME_MAX);
1423	SvPOK_on (data);
1424
1425	req->type = REQ_READLINK;	1120	req->type = ix;
1426	req->fh = newSVsv (path);	1121	req->sv1 = newSVsv (path);
1427	req->ptr2 = SvPVbyte_nolen (path);
1428	req->sv1 = data;
1429	req->ptr1 = SvPVbyte_nolen (data);	1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
1430		1123
1431	REQ_SEND;	1124	REQ_SEND;
1432	}	1125	}
1433		1126
1434	void	1127	void
1435	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1128	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1436	SV * out_fh
1437	SV * in_fh
1438	UV in_offset
1439	UV length
1440	SV * callback
1441	PROTOTYPE: $$$$;$
1442	PPCODE:	1129	PPCODE:
1443	{	1130	{
		1131	int ifd = s_fileno_croak (in_fh , 0);
		1132	int ofd = s_fileno_croak (out_fh, 1);
1444	dREQ;	1133	dREQ;
1445		1134
1446	req->type = REQ_SENDFILE;	1135	req->type = EIO_SENDFILE;
1447	req->fh = newSVsv (out_fh);	1136	req->sv1 = newSVsv (out_fh);
1448	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1137	req->int1 = ofd;
1449	req->sv2 = newSVsv (in_fh);	1138	req->sv2 = newSVsv (in_fh);
1450	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1139	req->int2 = ifd;
1451	req->offs = in_offset;	1140	req->offs = in_offset;
1452	req->size = length;	1141	req->size = length;
1453		1142
1454	REQ_SEND;	1143	REQ_SEND;
1455	}	1144	}
1456		1145
1457	void	1146	void
1458	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1147	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1459	SV * fh
1460	UV offset
1461	IV length
1462	SV * callback
1463	PROTOTYPE: $$$;$
1464	PPCODE:	1148	PPCODE:
1465	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1466	dREQ;	1151	dREQ;
1467		1152
1468	req->type = REQ_READAHEAD;	1153	req->type = EIO_READAHEAD;
1469	req->fh = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1470	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1471	req->offs = offset;	1156	req->offs = offset;
1472	req->size = length;	1157	req->size = length;
1473		1158
1474	REQ_SEND;	1159	REQ_SEND;
1475	}	1160	}
1476		1161
1477	void	1162	void
1478	aio_stat (fh_or_path,callback=&PL_sv_undef)	1163	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479	SV * fh_or_path
1480	SV * callback
1481	ALIAS:	1164	ALIAS:
1482	aio_stat = REQ_STAT	1165	aio_stat = EIO_STAT
1483	aio_lstat = REQ_LSTAT	1166	aio_lstat = EIO_LSTAT
		1167	aio_statvfs = EIO_STATVFS
1484	PPCODE:	1168	PPCODE:
1485	{	1169	{
1486	dREQ;	1170	dREQ;
1487		1171
1488	New (0, req->statdata, 1, Stat_t);	1172	req->sv1 = newSVsv (fh_or_path);
1489	if (!req->statdata)
1490	{
1491	req_free (req);
1492	croak ("out of memory during aio_req->statdata allocation");
1493	}
1494		1173
1495	if (SvPOK (fh_or_path))	1174	if (SvPOK (req->sv1))
1496	{	1175	{
1497	req->type = ix;	1176	req->type = ix;
1498	req->sv1 = newSVsv (fh_or_path);
1499	req->ptr1 = SvPVbyte_nolen (fh_or_path);	1177	req->ptr1 = SvPVbyte_nolen (req->sv1);
1500	}	1178	}
1501	else	1179	else
1502	{	1180	{
1503	req->type = REQ_FSTAT;	1181	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1504	req->fh = newSVsv (fh_or_path);
1505	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1182	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506	}	1183	}
1507		1184
1508	REQ_SEND;	1185	REQ_SEND;
1509	}	1186	}
1510		1187
		1188	UV
		1189	major (UV dev)
		1190	ALIAS:
		1191	minor = 1
		1192	CODE:
		1193	RETVAL = ix ? major (dev) : minor (dev);
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	UV
		1198	makedev (UV maj, UV min)
		1199	CODE:
		1200	RETVAL = makedev (maj, min);
		1201	OUTPUT:
		1202	RETVAL
		1203
1511	void	1204	void
		1205	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1206	PPCODE:
		1207	{
		1208	dREQ;
		1209
		1210	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1211	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1212	req->sv1 = newSVsv (fh_or_path);
		1213
		1214	if (SvPOK (req->sv1))
		1215	{
		1216	req->type = EIO_UTIME;
		1217	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1218	}
		1219	else
		1220	{
		1221	req->type = EIO_FUTIME;
		1222	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1223	}
		1224
		1225	REQ_SEND;
		1226	}
		1227
		1228	void
		1229	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1230	PPCODE:
		1231	{
		1232	dREQ;
		1233
		1234	req->sv1 = newSVsv (fh_or_path);
		1235	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1236
		1237	if (SvPOK (req->sv1))
		1238	{
		1239	req->type = EIO_TRUNCATE;
		1240	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1241	}
		1242	else
		1243	{
		1244	req->type = EIO_FTRUNCATE;
		1245	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1246	}
		1247
		1248	REQ_SEND;
		1249	}
		1250
		1251	void
		1252	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1253	ALIAS:
		1254	aio_chmod = EIO_CHMOD
		1255	aio_mkdir = EIO_MKDIR
		1256	PPCODE:
		1257	{
		1258	dREQ;
		1259
		1260	req->int2 = mode;
		1261	req->sv1 = newSVsv (fh_or_path);
		1262
		1263	if (SvPOK (req->sv1))
		1264	{
		1265	req->type = ix;
		1266	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1267	}
		1268	else
		1269	{
		1270	req->type = EIO_FCHMOD;
		1271	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1272	}
		1273
		1274	REQ_SEND;
		1275	}
		1276
		1277	void
		1278	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1279	PPCODE:
		1280	{
		1281	dREQ;
		1282
		1283	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1284	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1285	req->sv1 = newSVsv (fh_or_path);
		1286
		1287	if (SvPOK (req->sv1))
		1288	{
		1289	req->type = EIO_CHOWN;
		1290	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1291	}
		1292	else
		1293	{
		1294	req->type = EIO_FCHOWN;
		1295	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1296	}
		1297
		1298	REQ_SEND;
		1299	}
		1300
		1301	void
		1302	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1303	PPCODE:
		1304	{
		1305	dREQ;
		1306
		1307	req->type = EIO_READDIR;
		1308	req->sv1 = newSVsv (pathname);
		1309	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1310	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1311
		1312	if (flags & EIO_READDIR_DENTS)
		1313	req->int1 |= EIO_READDIR_CUSTOM2;
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
1512	aio_unlink (pathname,callback=&PL_sv_undef)	1319	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513	SV * pathname
1514	SV * callback
1515	ALIAS:	1320	ALIAS:
1516	aio_unlink = REQ_UNLINK	1321	aio_unlink = EIO_UNLINK
1517	aio_rmdir = REQ_RMDIR	1322	aio_rmdir = EIO_RMDIR
1518	aio_readdir = REQ_READDIR	1323	aio_readdir = EIO_READDIR
1519	PPCODE:	1324	PPCODE:
1520	{	1325	{
1521	dREQ;	1326	dREQ;
1522		1327
1523	req->type = ix;	1328	req->type = ix;
1524	req->sv1 = newSVsv (pathname);	1329	req->sv1 = newSVsv (pathname);
1525	req->ptr1 = SvPVbyte_nolen (pathname);	1330	req->ptr1 = SvPVbyte_nolen (req->sv1);
1526		1331
1527	REQ_SEND;	1332	REQ_SEND;
1528	}	1333	}
1529		1334
1530	void	1335	void
1531	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1336	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1532	SV * oldpath
1533	SV * newpath
1534	SV * callback
1535	ALIAS:	1337	ALIAS:
1536	aio_link = REQ_LINK	1338	aio_link = EIO_LINK
1537	aio_symlink = REQ_SYMLINK	1339	aio_symlink = EIO_SYMLINK
1538	aio_rename = REQ_RENAME	1340	aio_rename = EIO_RENAME
1539	PPCODE:	1341	PPCODE:
1540	{	1342	{
1541	dREQ;	1343	dREQ;
1542		1344
1543	req->type = ix;	1345	req->type = ix;
1544	req->fh = newSVsv (oldpath);	1346	req->sv1 = newSVsv (oldpath);
1545	req->ptr2 = SvPVbyte_nolen (req->fh);	1347	req->ptr1 = SvPVbyte_nolen (req->sv1);
1546	req->sv1 = newSVsv (newpath);	1348	req->sv2 = newSVsv (newpath);
1547	req->ptr1 = SvPVbyte_nolen (newpath);	1349	req->ptr2 = SvPVbyte_nolen (req->sv2);
1548		1350
1549	REQ_SEND;	1351	REQ_SEND;
1550	}	1352	}
1551		1353
1552	void	1354	void
1553	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1355	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1554	SV * pathname
1555	SV * callback
1556	UV mode
1557	UV dev
1558	PPCODE:	1356	PPCODE:
1559	{	1357	{
1560	dREQ;	1358	dREQ;
1561		1359
1562	req->type = REQ_MKNOD;	1360	req->type = EIO_MKNOD;
1563	req->sv1 = newSVsv (pathname);	1361	req->sv1 = newSVsv (pathname);
1564	req->ptr1 = SvPVbyte_nolen (pathname);	1362	req->ptr1 = SvPVbyte_nolen (req->sv1);
1565	req->mode = (mode_t)mode;	1363	req->int2 = (mode_t)mode;
1566	req->offs = dev;	1364	req->offs = dev;
1567		1365
1568	REQ_SEND;	1366	REQ_SEND;
1569	}	1367	}
1570		1368
1571	void	1369	void
		1370	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1371	ALIAS:
		1372	aio_mtouch = EIO_MTOUCH
		1373	aio_msync = EIO_MSYNC
		1374	PPCODE:
		1375	{
		1376	STRLEN svlen;
		1377	char *svptr = SvPVbyte (data, svlen);
		1378	UV len = SvUV (length);
		1379
		1380	if (offset < 0)
		1381	offset += svlen;
		1382
		1383	if (offset < 0 || offset > svlen)
		1384	croak ("offset outside of scalar");
		1385
		1386	if (!SvOK (length) || len + offset > svlen)
		1387	len = svlen - offset;
		1388
		1389	{
		1390	dREQ;
		1391
		1392	req->type = ix;
		1393	req->sv2 = SvREFCNT_inc (data);
		1394	req->ptr2 = (char *)svptr + offset;
		1395	req->size = len;
		1396	req->int1 = flags;
		1397
		1398	REQ_SEND;
		1399	}
		1400	}
		1401
		1402	void
		1403	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1404	PPCODE:
		1405	{
		1406	STRLEN svlen;
		1407	char *svptr = SvPVbyte (data, svlen);
		1408	UV len = SvUV (length);
		1409
		1410	if (offset < 0)
		1411	offset += svlen;
		1412
		1413	if (offset < 0 || offset > svlen)
		1414	croak ("offset outside of scalar");
		1415
		1416	if (!SvOK (length) || len + offset > svlen)
		1417	len = svlen - offset;
		1418
		1419	{
		1420	dREQ;
		1421
		1422	req->type = EIO_MLOCK;
		1423	req->sv2 = SvREFCNT_inc (data);
		1424	req->ptr2 = (char *)svptr + offset;
		1425	req->size = len;
		1426
		1427	REQ_SEND;
		1428	}
		1429	}
		1430
		1431	void
		1432	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1433	PPCODE:
		1434	{
		1435	dREQ;
		1436
		1437	req->type = EIO_MLOCKALL;
		1438	req->int1 = flags;
		1439
		1440	REQ_SEND;
		1441	}
		1442
		1443	void
1572	aio_busy (delay,callback=&PL_sv_undef)	1444	aio_busy (double delay, SV *callback=&PL_sv_undef)
1573	double delay
1574	SV * callback
1575	PPCODE:	1445	PPCODE:
1576	{	1446	{
1577	dREQ;	1447	dREQ;
1578		1448
1579	req->type = REQ_BUSY;	1449	req->type = EIO_BUSY;
1580	req->int1 = delay < 0. ? 0 : delay;	1450	req->nv1 = delay < 0. ? 0. : delay;
1581	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582		1451
1583	REQ_SEND;	1452	REQ_SEND;
1584	}	1453	}
1585		1454
1586	void	1455	void
1587	aio_group (callback=&PL_sv_undef)	1456	aio_group (SV *callback=&PL_sv_undef)
1588	SV * callback
1589	PROTOTYPE: ;$
1590	PPCODE:	1457	PPCODE:
1591	{	1458	{
1592	dREQ;	1459	dREQ;
1593		1460
1594	req->type = REQ_GROUP;	1461	req->type = EIO_GROUP;
1595		1462
1596	req_send (req);	1463	req_submit (req);
1597	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1464	XPUSHs (req_sv (req, aio_grp_stash));
1598	}	1465	}
1599		1466
1600	void	1467	void
1601	aio_nop (callback=&PL_sv_undef)	1468	aio_nop (SV *callback=&PL_sv_undef)
1602	SV * callback	1469	ALIAS:
		1470	aio_nop = EIO_NOP
		1471	aio_sync = EIO_SYNC
1603	PPCODE:	1472	PPCODE:
1604	{	1473	{
1605	dREQ;	1474	dREQ;
1606		1475
1607	req->type = REQ_NOP;	1476	req->type = ix;
1608		1477
1609	REQ_SEND;	1478	REQ_SEND;
1610	}	1479	}
1611		1480
1612	int	1481	int
1613	aioreq_pri (int pri = 0)	1482	aioreq_pri (int pri = 0)
1614	PROTOTYPE: ;$
1615	CODE:	1483	CODE:
1616	RETVAL = next_pri - PRI_BIAS;	1484	RETVAL = next_pri;
1617	if (items > 0)	1485	if (items > 0)
1618	{	1486	{
1619	if (pri < PRI_MIN) pri = PRI_MIN;	1487	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620	if (pri > PRI_MAX) pri = PRI_MAX;	1488	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621	next_pri = pri + PRI_BIAS;	1489	next_pri = pri;
1622	}	1490	}
1623	OUTPUT:	1491	OUTPUT:
1624	RETVAL	1492	RETVAL
1625		1493
1626	void	1494	void
1627	aioreq_nice (int nice = 0)	1495	aioreq_nice (int nice = 0)
1628	CODE:	1496	CODE:
1629	nice = next_pri - nice;	1497	nice = next_pri - nice;
1630	if (nice < PRI_MIN) nice = PRI_MIN;	1498	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631	if (nice > PRI_MAX) nice = PRI_MAX;	1499	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632	next_pri = nice + PRI_BIAS;	1500	next_pri = nice;
1633		1501
1634	void	1502	void
1635	flush ()	1503	flush ()
1636	PROTOTYPE:
1637	CODE:	1504	CODE:
1638	while (nreqs)	1505	while (eio_nreqs ())
1639	{	1506	{
1640	poll_wait ();	1507	poll_wait ();
1641	poll_cb (0);	1508	poll_cb ();
1642	}	1509	}
1643		1510
1644	void
1645	poll()
1646	PROTOTYPE:
1647	CODE:
1648	if (nreqs)
1649	{
1650	poll_wait ();
1651	poll_cb (0);
1652	}
1653
1654	int	1511	int
1655	poll_fileno()	1512	poll ()
1656	PROTOTYPE:
1657	CODE:	1513	CODE:
1658	RETVAL = respipe [0];	1514	poll_wait ();
1659	OUTPUT:
1660	RETVAL
1661
1662	int
1663	poll_cb(...)
1664	PROTOTYPE:
1665	CODE:
1666	RETVAL = poll_cb ();	1515	RETVAL = poll_cb ();
1667	OUTPUT:	1516	OUTPUT:
1668	RETVAL	1517	RETVAL
1669		1518
1670	void
1671	poll_wait()
1672	PROTOTYPE:
1673	CODE:
1674	if (nreqs)
1675	poll_wait ();
1676
1677	int	1519	int
1678	nreqs()	1520	poll_fileno ()
1679	PROTOTYPE:
1680	CODE:	1521	CODE:
1681	RETVAL = nreqs;	1522	RETVAL = s_epipe_fd (&respipe);
1682	OUTPUT:	1523	OUTPUT:
1683	RETVAL	1524	RETVAL
1684		1525
1685	int	1526	int
1686	nready()	1527	poll_cb (...)
1687	PROTOTYPE:	1528	PROTOTYPE:
1688	CODE:	1529	CODE:
1689	RETVAL = get_nready ();	1530	RETVAL = poll_cb ();
1690	OUTPUT:	1531	OUTPUT:
1691	RETVAL	1532	RETVAL
1692		1533
		1534	void
		1535	poll_wait ()
		1536	CODE:
		1537	poll_wait ();
		1538
1693	int	1539	int
1694	npending()	1540	nreqs ()
1695	PROTOTYPE:
1696	CODE:	1541	CODE:
1697	RETVAL = get_npending ();	1542	RETVAL = eio_nreqs ();
1698	OUTPUT:	1543	OUTPUT:
1699	RETVAL	1544	RETVAL
1700		1545
1701	int	1546	int
1702	nthreads()	1547	nready ()
1703	PROTOTYPE:
1704	CODE:	1548	CODE:
1705	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1549	RETVAL = eio_nready ();
1706	RETVAL = started;
1707	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1708	OUTPUT:	1550	OUTPUT:
1709	RETVAL	1551	RETVAL
1710		1552
		1553	int
		1554	npending ()
		1555	CODE:
		1556	RETVAL = eio_npending ();
		1557	OUTPUT:
		1558	RETVAL
		1559
		1560	int
		1561	nthreads ()
		1562	CODE:
		1563	RETVAL = eio_nthreads ();
		1564	OUTPUT:
		1565	RETVAL
		1566
		1567	int
		1568	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1569	CODE:
		1570	RETVAL = posix_fadvise (fh, offset, length, advice);
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	ssize_t
		1575	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1576	CODE:
		1577	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	void
		1582	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1583	PPCODE:
		1584	sv_unmagic (scalar, MMAP_MAGIC);
		1585	{
		1586	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1587	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1588	if (addr == (void *)-1)
		1589	XSRETURN_NO;
		1590
		1591	sv_force_normal (scalar);
		1592
		1593	/* we store the length in mg_obj, as namlen is I32 :/ */
		1594	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1595	->mg_obj = (SV *)length;
		1596
		1597	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1598
		1599	if (!(prot & PROT_WRITE))
		1600	SvREADONLY_on (scalar);
		1601
		1602	if (SvLEN (scalar))
		1603	Safefree (SvPVX (scalar));
		1604
		1605	SvPVX (scalar) = (char *)addr;
		1606	SvCUR_set (scalar, length);
		1607	SvLEN_set (scalar, 0);
		1608	SvPOK_only (scalar);
		1609
		1610	XSRETURN_YES;
		1611	}
		1612
		1613	void
		1614	munmap (SV *scalar)
		1615	CODE:
		1616	sv_unmagic (scalar, MMAP_MAGIC);
		1617
		1618	int
		1619	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1620	ALIAS:
		1621	mprotect = 1
		1622	CODE:
		1623	{
		1624	STRLEN svlen;
		1625	void *addr = SvPVbyte (scalar, svlen);
		1626	size_t len = SvUV (length);
		1627
		1628	if (offset < 0)
		1629	offset += svlen;
		1630
		1631	if (offset < 0 || offset > svlen)
		1632	croak ("offset outside of scalar");
		1633
		1634	if (!SvOK (length) || len + offset > svlen)
		1635	len = svlen - offset;
		1636
		1637	addr = (void *)(((intptr_t)addr) + offset);
		1638	eio_page_align (&addr, &len);
		1639
		1640	switch (ix)
		1641	{
		1642	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1643	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1644	}
		1645	}
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1651	CODE:
		1652	{
		1653	STRLEN svlen;
		1654	void *addr = SvPVbyte (scalar, svlen);
		1655	size_t len = SvUV (length);
		1656
		1657	if (offset < 0)
		1658	offset += svlen;
		1659
		1660	if (offset < 0 || offset > svlen)
		1661	croak ("offset outside of scalar");
		1662
		1663	if (!SvOK (length) || len + offset > svlen)
		1664	len = svlen - offset;
		1665
		1666	addr = (void *)(((intptr_t)addr) + offset);
		1667	eio_page_align (&addr, &len);
		1668	#if _POSIX_MEMLOCK_RANGE
		1669	RETVAL = munlock (addr, len);
		1670	#else
		1671	RETVAL = ((errno = ENOSYS), -1);
		1672	#endif
		1673	}
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	int
		1678	munlockall ()
		1679	CODE:
		1680	#if _POSIX_MEMLOCK
		1681	munlockall ();
		1682	#else
		1683	RETVAL = -1;
		1684	errno = ENOSYS;
		1685	#endif
		1686	OUTPUT:
		1687	RETVAL
		1688
		1689	void _on_next_submit (SV *cb)
		1690	CODE:
		1691	SvREFCNT_dec (on_next_submit);
		1692	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1693
1711	PROTOTYPES: DISABLE	1694	PROTOTYPES: DISABLE
1712		1695
1713	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1696	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714		1697
1715	void	1698	void
1716	cancel (aio_req_ornot req)	1699	cancel (aio_req_ornot req)
1717	CODE:	1700	CODE:
1718	req_cancel (req);	1701	eio_cancel (req);
1719		1702
1720	void	1703	void
1721	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1704	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1722	CODE:	1705	PPCODE:
		1706	{
		1707	if (GIMME_V != G_VOID)
		1708	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1709
		1710	if (items > 1)
		1711	{
		1712	SV *cb_cv =get_cb (callback);
		1713
1723	SvREFCNT_dec (req->callback);	1714	SvREFCNT_dec (req->callback);
1724	req->callback = newSVsv (callback);	1715	req->callback = SvREFCNT_inc (cb_cv);
		1716	}
		1717	}
1725		1718
1726	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1719	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727		1720
1728	void	1721	void
1729	add (aio_req grp, ...)	1722	add (aio_req grp, ...)
1730	PPCODE:	1723	PPCODE:
1731	{	1724	{
1732	int i;	1725	int i;
1733	aio_req req;
1734		1726
1735	if (grp->int1 == 2)	1727	if (grp->int1 == 2)
1736	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1728	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737		1729
1738	for (i = 1; i < items; ++i )	1730	for (i = 1; i < items; ++i )
1739	{	1731	{
		1732	aio_req req;
		1733
1740	if (GIMME_V != G_VOID)	1734	if (GIMME_V != G_VOID)
1741	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1735	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742		1736
1743	req = SvAIO_REQ (ST (i));	1737	req = SvAIO_REQ (ST (i));
1744		1738
1745	if (req)	1739	if (req)
1746	{	1740	eio_grp_add (grp, req);
1747	++grp->size;
1748	req->grp = grp;
1749
1750	req->grp_prev = 0;
1751	req->grp_next = grp->grp_first;
1752
1753	if (grp->grp_first)
1754	grp->grp_first->grp_prev = req;
1755
1756	grp->grp_first = req;
1757	}
1758	}	1741	}
1759	}	1742	}
1760		1743
1761	void	1744	void
1762	cancel_subs (aio_req_ornot req)	1745	cancel_subs (aio_req_ornot req)
…		…
1771	AV *av;	1754	AV *av;
1772		1755
1773	grp->errorno = errno;	1756	grp->errorno = errno;
1774		1757
1775	av = newAV ();	1758	av = newAV ();
		1759	av_extend (av, items - 1);
1776		1760
1777	for (i = 1; i < items; ++i )	1761	for (i = 1; i < items; ++i )
1778	av_push (av, newSVsv (ST (i)));	1762	av_push (av, newSVsv (ST (i)));
1779		1763
1780	SvREFCNT_dec (grp->sv1);	1764	SvREFCNT_dec (grp->sv1);
…		…
1787	grp->errorno = errorno;	1771	grp->errorno = errorno;
1788		1772
1789	void	1773	void
1790	limit (aio_req grp, int limit)	1774	limit (aio_req grp, int limit)
1791	CODE:	1775	CODE:
1792	grp->int2 = limit;	1776	eio_grp_limit (grp, limit);
1793	aio_grp_feed (grp);
1794		1777
1795	void	1778	void
1796	feed (aio_req grp, SV *callback=&PL_sv_undef)	1779	feed (aio_req grp, SV *callback=&PL_sv_undef)
1797	CODE:	1780	CODE:
1798	{	1781	{
1799	SvREFCNT_dec (grp->sv2);	1782	SvREFCNT_dec (grp->sv2);
1800	grp->sv2 = newSVsv (callback);	1783	grp->sv2 = newSVsv (callback);
		1784	grp->feed = aio_grp_feed;
1801		1785
1802	if (grp->int2 <= 0)	1786	if (grp->int2 <= 0)
1803	grp->int2 = 2;	1787	grp->int2 = 2;
1804		1788
1805	aio_grp_feed (grp);	1789	eio_grp_limit (grp, grp->int2);
1806	}	1790	}
1807		1791

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