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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs.
Revision 1.195 by root, Mon Sep 26 20:19:08 2011 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
		69	#include <sys/time.h>
		70	#include <sys/select.h>
		71	#include <unistd.h>
23	#include <utime.h>	72	#include <utime.h>
		73	#include <signal.h>
24		74
25	#if HAVE_SENDFILE	75	#endif
26	# if __linux	76
27	# include <sys/sendfile.h>	77	#define EIO_STRUCT_STAT Stat_t
28	# elif __freebsd	78
29	# include <sys/socket.h>	79	/* use NV for 32 bit perls as it allows larger offsets */
30	# include <sys/uio.h>	80	#if IVSIZE >= 8
31	# elif __hpux	81	# define VAL64 IV
32	# include <sys/socket.h>	82	# define SvVAL64 SvIV
33	# elif __solaris /* not yet */	83	# define newSVval64 newSViv
34	# include <sys/sendfile.h>	84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
35	# else	295	# else
36	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	297	# endif
38	#endif	298	#endif
39		299	#ifndef MAP_HUGETLB
40	/* number of seconds after which idle threads exit */	300	# define MAP_HUGETLB 0
41	#define IDLE_TIMEOUT 10
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
		304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
47		314
48	/* buffer size for various temporary buffers */	315	#ifndef makedev
49	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
50		324
51	#define dBUF \	325	#ifndef PAGESIZE
52	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
53	LOCK (wrklock); \	327	#endif
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
55	UNLOCK (wrklock); \
56	if (!aio_buf) \
57	return -1;
58
59	typedef SV SV8; /* byte-sv, used for argument-checking */
60		328
61	enum {	329	enum {
62	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	331	};
77		332
78	#define AIO_REQ_KLASS "IO::AIO::REQ"
79	#define AIO_GRP_KLASS "IO::AIO::GRP"
80
81	typedef struct aio_cb
82	{
83	struct aio_cb *volatile next;
84
85	SV *callback;
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92
93	STRLEN stroffset;
94	int type;
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98
99	unsigned char flags;
100	unsigned char pri;
101
102	SV *self; /* the perl counterpart of this request, if any */
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
104	} aio_cb;
105
106	enum {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */
108	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};
111
112	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
113	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd *aio_wd;
114		336
115	enum {	337	static SV *on_next_submit;
116	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
117	PRI_MAX = 4,	339	static int max_outstanding;
118		340
119	DEFAULT_PRI = 0,	341	static s_epipe respipe;
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123		342
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135
136	static thread_t main_tid;
137	static int main_sig;
138	static int block_sig_level;
139
140	void block_sig ()
141	{
142	sigset_t ss;
143
144	if (block_sig_level++)
145	return;
146
147	if (!main_sig)
148	return;
149
150	sigemptyset (&ss);
151	sigaddset (&ss, main_sig);
152	pthread_sigmask (SIG_BLOCK, &ss, 0);
153	}
154
155	void unblock_sig ()
156	{
157	sigset_t ss;
158
159	if (--block_sig_level)
160	return;
161
162	if (!main_sig)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{
195	closedir (wrk->dirp);
196	wrk->dirp = 0;
197	}
198
199	if (wrk->dbuf)
200	{
201	free (wrk->dbuf);
202	wrk->dbuf = 0;
203	}
204	}
205
206	static void worker_free (worker *wrk)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;
301
302	--q->size;
303
304	for (pri = NUM_PRI; pri--; )
305	{
306	aio_req req = q->qs[pri];
307
308	if (req)
309	{
310	if (!(q->qs[pri] = req->next))
311	q->qe[pri] = 0;
312
313	return req;
314	}
315	}
316
317	abort ();
318	}
319
320	static int poll_cb ();
321	static int req_invoke (aio_req req);
322	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
324		345
		346	static void want_poll (void)
		347	{
		348	/* write a dummy byte to the pipe so fh becomes ready */
		349	s_epipe_signal (&respipe);
		350	}
		351
		352	static void done_poll (void)
		353	{
		354	/* read any signals sent by the worker threads */
		355	s_epipe_drain (&respipe);
		356	}
		357
325	/* must be called at most once */	358	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
327	{	360	{
328	if (!req->self)	361	if (!req->self)
329	{	362	{
330	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	365	}
333		366
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	368	}
336		369
337	static aio_req SvAIO_REQ (SV *sv)	370	static aio_req SvAIO_REQ (SV *sv)
338	{	371	{
339	MAGIC *mg;	372	MAGIC *mg;
340		373
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	374	if (!SvROK (sv)
		375	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		376	&& SvSTASH (SvRV (sv)) != aio_req_stash
		377	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	378	croak ("object of class IO::AIO::REQ expected");
343		379
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	380	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		381
346	return mg ? (aio_req)mg->mg_ptr : 0;	382	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	383	}
348		384
		385	static aio_wd SvAIO_WD (SV *sv)
		386	{
		387	if (!SvROK (sv)
		388	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		389	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		390	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		391
		392	return (aio_wd)(long)SvIVX (SvRV (sv));
		393	}
		394
349	static void aio_grp_feed (aio_req grp)	395	static void aio_grp_feed (aio_req grp)
350	{	396	{
351	block_sig ();	397	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	398	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	399	dSP;
360		400
361	ENTER;	401	ENTER;
362	SAVETMPS;	402	SAVETMPS;
363	PUSHMARK (SP);	403	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	404	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	405	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	406	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	407	SPAGAIN;
368	FREETMPS;	408	FREETMPS;
369	LEAVE;	409	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	}	410	}
380
381	unblock_sig ();
382	}	411	}
383		412
384	static void aio_grp_dec (aio_req grp)	413	static void req_submit (eio_req *req)
385	{	414	{
386	--grp->size;	415	eio_submit (req);
387		416
388	/* call feeder, if applicable */	417	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	418	{
394	block_sig ();	419	dSP;
		420	SV *cb = sv_2mortal (on_next_submit);
395		421
396	if (!req_invoke (grp))	422	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		423
403	req_free (grp);	424	PUSHMARK (SP);
404	unblock_sig ();	425	PUTBACK;
		426	call_sv (cb, G_DISCARD | G_EVAL);
405	}	427	}
406	}	428	}
407		429
408	static int req_invoke (aio_req req)	430	static int req_invoke (eio_req *req)
409	{	431	{
410	dSP;
411
412	if (req->flags & FLAG_SV1_RO_OFF)	432	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv1);	433	SvREADONLY_off (req->sv2);
414		434
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	435	if (!EIO_CANCELLED (req) && req->callback)
416	{	436	{
		437	dSP;
		438	static SV *sv_result_cache; /* caches the result integer SV */
		439	SV *sv_result;
		440
417	ENTER;	441	ENTER;
418	SAVETMPS;	442	SAVETMPS;
419	PUSHMARK (SP);	443	PUSHMARK (SP);
420	EXTEND (SP, 1);	444	EXTEND (SP, 1);
421		445
		446	/* do not recreate the result IV from scratch each time */
		447	if (expect_true (sv_result_cache))
		448	{
		449	sv_result = sv_result_cache; sv_result_cache = 0;
		450	SvIV_set (sv_result, req->result);
		451	SvIOK_only (sv_result);
		452	}
		453	else
		454	{
		455	sv_result = newSViv (req->result);
		456	SvREADONLY_on (sv_result);
		457	}
		458
422	switch (req->type)	459	switch (req->type)
423	{	460	{
		461	case EIO_WD_OPEN:
		462	PUSHs (sv_2mortal (sv_bless (newRV_noinc (newSViv (((long)req->wd))), aio_wd_stash)));
		463	break;
		464
424	case REQ_READDIR:	465	case EIO_READDIR:
425	{	466	{
426	SV *rv = &PL_sv_undef;	467	SV *rv = &PL_sv_undef;
427		468
428	if (req->result >= 0)	469	if (req->result >= 0)
429	{	470	{
430	int i;	471	int i;
431	char *buf = req->ptr2;	472	char *names = (char *)req->ptr2;
		473	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	474	AV *av = newAV ();
433		475
434	av_extend (av, req->result - 1);	476	av_extend (av, req->result - 1);
435		477
436	for (i = 0; i < req->result; ++i)	478	for (i = 0; i < req->result; ++i)
437	{	479	{
438	SV *sv = newSVpv (buf, 0);	480	if (req->int1 & EIO_READDIR_DENTS)
		481	{
		482	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		483
		484	if (req->int1 & EIO_READDIR_CUSTOM2)
		485	{
		486	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		487	AV *avent = newAV ();
		488
		489	av_extend (avent, 2);
		490
		491	if (!sv_type [ent->type])
		492	{
		493	sv_type [ent->type] = newSViv (ent->type);
		494	SvREADONLY_on (sv_type [ent->type]);
		495	}
		496
		497	av_store (avent, 0, namesv);
		498	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		499	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		500
		501	av_store (av, i, newRV_noinc ((SV *)avent));
		502	}
		503	else
440	av_store (av, i, sv);	504	av_store (av, i, namesv);
		505
		506	++ent;
		507	}
		508	else
		509	{
		510	SV *name = newSVpv (names, 0);
		511	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	512	names += SvCUR (name) + 1;
		513	}
442	}	514	}
443		515
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	516	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	517	}
446		518
447	PUSHs (rv);	519	PUSHs (rv);
		520
		521	if (req->int1 & EIO_READDIR_CUSTOM1)
		522	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	523	}
449	break;	524	break;
450		525
451	case REQ_OPEN:	526	case EIO_OPEN:
452	{	527	{
453	/* convert fd to fh */	528	/* convert fd to fh */
454	SV *fh;	529	SV *fh = &PL_sv_undef;
455		530
456	PUSHs (sv_2mortal (newSViv (req->result)));	531	if (req->result >= 0)
457	PUTBACK;	532	{
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	533	GV *gv = (GV *)sv_newmortal ();
459	SPAGAIN;	534	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		535	char sym [64];
		536	int symlen;
		537
		538	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		539	gv_init (gv, aio_stash, sym, symlen, 0);
460		540
461	fh = POPs;	541	symlen = snprintf (
462	PUSHMARK (SP);	542	sym,
		543	sizeof (sym),
		544	"%s&=%d",
		545	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		546	(int)req->result
		547	);
		548
		549	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		550	fh = (SV *)gv;
		551	}
		552
463	XPUSHs (fh);	553	PUSHs (fh);
464	}	554	}
465	break;	555	break;
466		556
		557	case EIO_STATVFS:
		558	case EIO_FSTATVFS:
		559	{
		560	SV *rv = &PL_sv_undef;
		561
		562	#ifndef _WIN32
		563	if (req->result >= 0)
		564	{
		565	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		566	HV *hv = newHV ();
		567
		568	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		569
		570	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		571	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		572	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		573	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		574	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		575	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		576	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		577	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		578	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		579	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		580	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		581	}
		582	#endif
		583
		584	PUSHs (rv);
		585	}
		586
		587	break;
		588
467	case REQ_GROUP:	589	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	590	req->int1 = 2; /* mark group as finished */
469		591
470	if (req->sv1)	592	if (req->sv1)
471	{	593	{
472	int i;	594	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	598	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	599	PUSHs (*av_fetch (av, i, 0));
478	}	600	}
479	break;	601	break;
480		602
481	case REQ_NOP:	603	case EIO_NOP:
482	case REQ_BUSY:	604	case EIO_BUSY:
483	break;	605	break;
484		606
485	case REQ_READLINK:	607	case EIO_READLINK:
		608	case EIO_REALPATH:
486	if (req->result > 0)	609	if (req->result > 0)
487	{	610	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
488	SvCUR_set (req->sv2, req->result);
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);
491	}
492	break;	611	break;
493		612
494	case REQ_STAT:	613	case EIO_STAT:
495	case REQ_LSTAT:	614	case EIO_LSTAT:
496	case REQ_FSTAT:	615	case EIO_FSTAT:
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	616	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
498	PL_laststatval = req->result;	617	PL_laststatval = req->result;
		618	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
499	PL_statcache = *(Stat_t *)(req->ptr2);	619	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));	620	PUSHs (sv_result);
501	break;	621	break;
502		622
503	case REQ_READ:	623	case EIO_READ:
		624	{
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	625	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;	626	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));	627	SvPOK_only (req->sv2);
		628	SvSETMAGIC (req->sv2);
		629	PUSHs (sv_result);
		630	}
507	break;	631	break;
508		632
		633	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		634	if (req->result > 0)
		635	SvIV_set (sv_result, 0);
		636	/* FALLTHROUGH */
		637
509	default:	638	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	639	PUSHs (sv_result);
511	break;	640	break;
512	}	641	}
513		642
514	errno = req->errorno;	643	errno = req->errorno;
515		644
516	PUTBACK;	645	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	646	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	647	SPAGAIN;
		648
		649	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		650	SvREFCNT_dec (sv_result);
		651	else
		652	sv_result_cache = sv_result;
519		653
520	FREETMPS;	654	FREETMPS;
521	LEAVE;	655	LEAVE;
		656
		657	PUTBACK;
522	}	658	}
523		659
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	660	return !!SvTRUE (ERRSV);
539	}	661	}
540		662
541	static void req_free (aio_req req)	663	static void req_destroy (aio_req req)
542	{	664	{
543	if (req->self)	665	if (req->self)
544	{	666	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	667	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	668	SvREFCNT_dec (req->self);
547	}	669	}
548		670
549	SvREFCNT_dec (req->sv1);	671	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	672	SvREFCNT_dec (req->sv2);
		673	SvREFCNT_dec (req->sv3);
		674	SvREFCNT_dec (req->sv4);
551	SvREFCNT_dec (req->callback);	675	SvREFCNT_dec (req->callback);
552		676
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	677	Safefree (req);
557	}	678	}
558		679
559	static void req_cancel_subs (aio_req grp)	680	static void req_cancel_subs (aio_req grp)
560	{	681	{
561	aio_req sub;
562
563	if (grp->type != REQ_GROUP)	682	if (grp->type != EIO_GROUP)
564	return;	683	return;
565		684
566	SvREFCNT_dec (grp->sv2);	685	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	686	grp->sv2 = 0;
568		687
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	688	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	689	}
572		690
573	static void req_cancel (aio_req req)	691	static void create_respipe (void)
574	{	692	{
575	req->flags |= FLAG_CANCELLED;	693	if (s_epipe_renew (&respipe))
576		694	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	695	}
579		696
580	static void *aio_proc(void *arg);
581
582	static void start_thread (void)
583	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()	697	static void poll_wait (void)
676	{	698	{
677	fd_set rfd;
678
679	while (nreqs)	699	while (eio_nreqs ())
680	{	700	{
681	int size;	701	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	702
		703	X_LOCK (reslock);
683	size = res_queue.size;	704	size = res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	705	X_UNLOCK (reslock);
685		706
686	if (size)	707	if (size)
687	return;	708	return;
688		709
689	maybe_start_thread ();	710	etp_maybe_start_thread ();
690		711
691	FD_ZERO(&rfd);	712	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	713	}
696	}	714	}
697		715
698	static int poll_cb ()	716	static int poll_cb (void)
699	{	717	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	718	for (;;)
713	{	719	{
714	for (;;)	720	int res = eio_poll ();
715	{
716	maybe_start_thread ();
717		721
718	LOCK (reslock);	722	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 [4];
729	while (read (respipe [0], buf, 4) == 4)
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	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);	723	croak (0);
753	}
754		724
755	count++;	725	if (!max_outstanding || max_outstanding > eio_nreqs ())
756	}	726	return res;
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;
774		727
775	poll_wait ();	728	poll_wait ();
776
777	++maxreqs;
778	}	729	}
779
780	unblock_sig ();
781	return count;
782	}	730	}
783		731
784	static void create_pipe ()	732	static void ecb_cold
		733	reinit (void)
785	{	734	{
786	if (pipe (respipe))	735	create_respipe ();
787	croak ("unable to initialize result pipe");
788		736
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	737	if (eio_init (want_poll, done_poll) < 0)
790	croak ("cannot set result pipe to nonblocking mode");	738	croak ("IO::AIO: unable to initialise eio library");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}	739	}
795		740
796	/*****************************************************************************/	741	/*****************************************************************************/
797	/* work around various missing functions */
798		742
799	#if !HAVE_PREADWRITE	743	#if !_POSIX_MAPPED_FILES
800	# define pread aio_pread	744	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
801	# define pwrite aio_pwrite	745	# define munmap(addr,length) (errno = ENOSYS, -1)
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}
824
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif	746	#endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974		747
975	if (res < 0	748	#if !_POSIX_MEMORY_PROTECTION
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	749	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
977	#if __solaris	750	# define PROT_NONE 0
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	751	# define PROT_WRITE 0
		752	# define MAP_PRIVATE 0
		753	# define MAP_SHARED 0
		754	# define MAP_FIXED 0
979	#endif	755	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985		756
986	res = 0;	757	#define MMAP_MAGIC PERL_MAGIC_ext
987		758
988	while (count)	759	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
989	{	760	{
990	ssize_t cnt;	761	int old_errno = errno;
991		762	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	763	errno = old_errno;
993		764
994	if (cnt <= 0)	765	mg->mg_obj = 0; /* just in case */
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999		766
1000	cnt = write (ofd, aio_buf, cnt);	767	SvREADONLY_off (sv);
1001		768
1002	if (cnt <= 0)	769	if (SvPVX (sv) != mg->mg_ptr)
1003	{	770	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007		771
1008	offset += cnt;	772	SvCUR_set (sv, 0);
1009	res += cnt;	773	SvPVX (sv) = 0;
1010	count -= cnt;	774	SvOK_off (sv);
1011	}
1012	}
1013		775
1014	return res;	776	return 0;
1015	}	777	}
1016		778
1017	/* read a full directory */	779	static MGVTBL mmap_vtbl = {
1018	static void scandir_ (aio_req req, worker *self)	780	0, 0, 0, 0, mmap_free
1019	{	781	};
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078		782
1079	/*****************************************************************************/	783	/*****************************************************************************/
1080		784
1081	static void *aio_proc (void *thr_arg)	785	static SV * get_cb (SV *cb_sv)
1082	{	786	{
1083	aio_req req;	787	SvGETMAGIC (cb_sv);
1084	struct timespec ts;	788	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}	789	}
1303		790
1304	#define dREQ \	791	#define dREQ \
		792	SV *cb_cv; \
1305	aio_req req; \	793	aio_req req; \
1306	int req_pri = next_pri; \	794	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \	795	next_pri = EIO_PRI_DEFAULT; \
1308	\	796	\
1309	if (SvOK (callback) && !SvROK (callback)) \	797	cb_cv = get_cb (callback); \
1310	croak ("callback must be undef or of reference type"); \
1311	\	798	\
1312	Newz (0, req, 1, aio_cb); \	799	Newz (0, req, 1, eio_req); \
1313	if (!req) \	800	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \	801	croak ("out of memory during eio_req allocation"); \
1315	\	802	\
1316	req->callback = newSVsv (callback); \	803	req->callback = SvREFCNT_inc (cb_cv); \
1317	req->pri = req_pri	804	req->pri = req_pri
1318		805
1319	#define REQ_SEND \	806	#define REQ_SEND \
		807	PUTBACK; \
1320	req_send (req); \	808	req_submit (req); \
		809	SPAGAIN; \
1321	\	810	\
1322	if (GIMME_V != G_VOID) \	811	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));	812	XPUSHs (req_sv (req, aio_req_stash));
1324		813
		814	static void
		815	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		816	{
		817	if (SvROK (path))
		818	{
		819	AV *av = (AV *)SvRV (path);
		820	SV *wdob;
		821
		822	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		823	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		824
		825	path = AvARRAY (av)[1];
		826	wdob = AvARRAY (av)[0];
		827
		828	*wd = SvAIO_WD (wdob);
		829	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		830	}
		831
		832	*pathsv = newSVsv (path);
		833	*ptr = SvPVbyte_nolen (*pathsv);
		834	}
		835
		836	static void
		837	req_set_path1 (aio_req req, SV *path)
		838	{
		839	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		840	}
		841
		842	static void
		843	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		844	{
		845	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		846
		847	switch (SvTYPE (rv))
		848	{
		849	case SVt_PVIO:
		850	case SVt_PVLV:
		851	case SVt_PVGV:
		852	req->type = type_fh;
		853	req->sv1 = newSVsv (fh_or_path);
		854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		855	break;
		856
		857	default:
		858	req->type = type_path;
		859	req_set_path1 (req, fh_or_path);
		860	break;
		861	}
		862
		863	}
		864
1325	MODULE = IO::AIO PACKAGE = IO::AIO	865	MODULE = IO::AIO PACKAGE = IO::AIO
1326		866
1327	PROTOTYPES: ENABLE	867	PROTOTYPES: ENABLE
1328		868
1329	BOOT:	869	BOOT:
1330	{	870	{
		871	static const struct {
		872	const char *name;
		873	IV iv;
		874	} *civ, const_iv[] = {
		875	# define const_niv(name, value) { # name, (IV) value },
		876	# define const_iv(name) { # name, (IV) name },
		877	# define const_eio(name) { # name, (IV) EIO_ ## name },
		878	const_iv (EXDEV)
		879	const_iv (ENOSYS)
		880	const_iv (O_RDONLY)
		881	const_iv (O_WRONLY)
		882	const_iv (O_RDWR)
		883	const_iv (O_CREAT)
		884	const_iv (O_TRUNC)
		885	const_iv (O_EXCL)
		886	const_iv (O_APPEND)
		887
		888	const_iv (O_ASYNC)
		889	const_iv (O_DIRECT)
		890	const_iv (O_NOATIME)
		891
		892	const_iv (O_CLOEXEC)
		893	const_iv (O_NOCTTY)
		894	const_iv (O_NOFOLLOW)
		895	const_iv (O_NONBLOCK)
		896	const_iv (O_EXEC)
		897	const_iv (O_SEARCH)
		898	const_iv (O_DIRECTORY)
		899	const_iv (O_DSYNC)
		900	const_iv (O_RSYNC)
		901	const_iv (O_SYNC)
		902	const_iv (O_TTY_INIT)
		903
		904	const_iv (S_IFIFO)
		905	const_iv (S_IFCHR)
		906	const_iv (S_IFBLK)
		907	const_iv (S_IFLNK)
		908	const_iv (S_IFREG)
		909	const_iv (S_IFDIR)
		910	const_iv (S_IFWHT)
		911	const_iv (S_IFSOCK)
		912	const_iv (S_IFMT)
		913
		914	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		915	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		916	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		917	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		918	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		919	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		920
		921	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		922	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		923	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		924	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		925	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		926
		927	const_iv (ST_RDONLY)
		928	const_iv (ST_NOSUID)
		929	const_iv (ST_NODEV)
		930	const_iv (ST_NOEXEC)
		931	const_iv (ST_SYNCHRONOUS)
		932	const_iv (ST_MANDLOCK)
		933	const_iv (ST_WRITE)
		934	const_iv (ST_APPEND)
		935	const_iv (ST_IMMUTABLE)
		936	const_iv (ST_NOATIME)
		937	const_iv (ST_NODIRATIME)
		938	const_iv (ST_RELATIME)
		939
		940	const_iv (PROT_NONE)
		941	const_iv (PROT_EXEC)
		942	const_iv (PROT_READ)
		943	const_iv (PROT_WRITE)
		944
		945	/*const_iv (MAP_FIXED)*/
		946	const_iv (MAP_PRIVATE)
		947	const_iv (MAP_SHARED)
		948	const_iv (MAP_ANONYMOUS)
		949
		950	/* linuxish */
		951	const_iv (MAP_HUGETLB)
		952	const_iv (MAP_LOCKED)
		953	const_iv (MAP_NORESERVE)
		954	const_iv (MAP_POPULATE)
		955	const_iv (MAP_NONBLOCK)
		956
		957	const_eio (MCL_FUTURE)
		958	const_eio (MCL_CURRENT)
		959
		960	const_eio (MS_ASYNC)
		961	const_eio (MS_INVALIDATE)
		962	const_eio (MS_SYNC)
		963
		964	const_eio (MT_MODIFY)
		965
		966	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		967	const_eio (SYNC_FILE_RANGE_WRITE)
		968	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		969
		970	const_eio (FALLOC_FL_KEEP_SIZE)
		971
		972	const_eio (READDIR_DENTS)
		973	const_eio (READDIR_DIRS_FIRST)
		974	const_eio (READDIR_STAT_ORDER)
		975	const_eio (READDIR_FOUND_UNKNOWN)
		976
		977	const_eio (DT_UNKNOWN)
		978	const_eio (DT_FIFO)
		979	const_eio (DT_CHR)
		980	const_eio (DT_DIR)
		981	const_eio (DT_BLK)
		982	const_eio (DT_REG)
		983	const_eio (DT_LNK)
		984	const_eio (DT_SOCK)
		985	const_eio (DT_WHT)
		986	};
		987
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	988	aio_stash = gv_stashpv ("IO::AIO" , 1);
		989	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		990	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		991	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1332		992
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	993	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	994	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		995
1341	create_pipe ();	996	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1343	}
1344		997
		998	reinit ();
		999	}
		1000
1345	void	1001	void
		1002	reinit ()
		1003	PROTOTYPE:
		1004
		1005	void
1346	max_poll_reqs (int nreqs)	1006	max_poll_reqs (unsigned int nreqs)
1347	PROTOTYPE: $	1007	PROTOTYPE: $
1348	CODE:	1008	CODE:
1349	max_poll_reqs = nreqs;	1009	eio_set_max_poll_reqs (nreqs);
1350		1010
1351	void	1011	void
1352	max_poll_time (double nseconds)	1012	max_poll_time (double nseconds)
1353	PROTOTYPE: $	1013	PROTOTYPE: $
1354	CODE:	1014	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	1015	eio_set_max_poll_time (nseconds);
1356		1016
1357	void	1017	void
1358	min_parallel (int nthreads)	1018	min_parallel (unsigned int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_parallel (int nthreads)
1363	PROTOTYPE: $
1364
1365	void
1366	max_idle (int nthreads)
1367	PROTOTYPE: $	1019	PROTOTYPE: $
1368	CODE:	1020	CODE:
1369	set_max_idle (nthreads);	1021	eio_set_min_parallel (nthreads);
1370		1022
1371	int	1023	void
1372	max_outstanding (int maxreqs)	1024	max_parallel (unsigned int nthreads)
1373	PROTOTYPE: $	1025	PROTOTYPE: $
1374	CODE:	1026	CODE:
1375	RETVAL = max_outstanding;	1027	eio_set_max_parallel (nthreads);
		1028
		1029	void
		1030	max_idle (unsigned int nthreads)
		1031	PROTOTYPE: $
		1032	CODE:
		1033	eio_set_max_idle (nthreads);
		1034
		1035	void
		1036	idle_timeout (unsigned int seconds)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_idle_timeout (seconds);
		1040
		1041	void
		1042	max_outstanding (unsigned int maxreqs)
		1043	PROTOTYPE: $
		1044	CODE:
1376	max_outstanding = maxreqs;	1045	max_outstanding = maxreqs;
1377	OUTPUT:	1046
1378	RETVAL	1047	void
		1048	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1049	PPCODE:
		1050	{
		1051	dREQ;
		1052
		1053	req->type = EIO_WD_OPEN;
		1054	req_set_path1 (req, pathname);
		1055
		1056	REQ_SEND;
		1057	}
1379		1058
1380	void	1059	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1060	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1382	PROTOTYPE: $$$;$
1383	PPCODE:	1061	PPCODE:
1384	{	1062	{
1385	dREQ;	1063	dREQ;
1386		1064
1387	req->type = REQ_OPEN;	1065	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	1066	req_set_path1 (req, pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	1067	req->int1 = flags;
1391	req->mode = mode;	1068	req->int2 = mode;
1392		1069
1393	REQ_SEND;	1070	REQ_SEND;
1394	}	1071	}
1395		1072
1396	void	1073	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1074	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	PROTOTYPE: $;$
1399	ALIAS:	1075	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	1076	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	1077	aio_fdatasync = EIO_FDATASYNC
		1078	aio_syncfs = EIO_SYNCFS
1403	PPCODE:	1079	PPCODE:
1404	{	1080	{
		1081	int fd = s_fileno_croak (fh, 0);
1405	dREQ;	1082	dREQ;
1406		1083
1407	req->type = ix;	1084	req->type = ix;
1408	req->sv1 = newSVsv (fh);	1085	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1086	req->int1 = fd;
1410		1087
1411	REQ_SEND (req);	1088	REQ_SEND (req);
1412	}	1089	}
1413		1090
1414	void	1091	void
		1092	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1093	PPCODE:
		1094	{
		1095	int fd = s_fileno_croak (fh, 0);
		1096	dREQ;
		1097
		1098	req->type = EIO_SYNC_FILE_RANGE;
		1099	req->sv1 = newSVsv (fh);
		1100	req->int1 = fd;
		1101	req->offs = offset;
		1102	req->size = nbytes;
		1103	req->int2 = flags;
		1104
		1105	REQ_SEND (req);
		1106	}
		1107
		1108	void
		1109	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_FALLOCATE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->int2 = mode;
		1119	req->offs = offset;
		1120	req->size = len;
		1121
		1122	REQ_SEND (req);
		1123	}
		1124
		1125	void
		1126	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1130	int fd = s_fileno_croak (fh, 0);
		1131	dREQ;
		1132
		1133	if (expect_false (close_fd < 0))
		1134	{
		1135	int pipefd [2];
		1136
		1137	if (
		1138	#ifdef _WIN32
		1139	_pipe (pipefd, 1, _O_BINARY) < 0
		1140	#else
		1141	pipe (pipefd) < 0
		1142	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1143	#endif
		1144	|| close (pipefd [1]) < 0
		1145	)
		1146	abort (); /*D*/
		1147
		1148	close_fd = pipefd [0];
		1149	}
		1150
		1151	req->type = EIO_DUP2;
		1152	req->int1 = close_fd;
		1153	req->sv2 = newSVsv (fh);
		1154	req->int2 = fd;
		1155
		1156	REQ_SEND (req);
		1157	}
		1158
		1159	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	1160	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1416	ALIAS:	1161	ALIAS:
1417	aio_read = REQ_READ	1162	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	1163	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$
1420	PPCODE:	1164	PPCODE:
1421	{	1165	{
1422	STRLEN svlen;	1166	STRLEN svlen;
		1167	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	1168	char *svptr = SvPVbyte (data, svlen);
1424		1169	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		1170
1428	if (dataoffset < 0)	1171	if (dataoffset < 0)
1429	dataoffset += svlen;	1172	dataoffset += svlen;
1430		1173
1431	if (dataoffset < 0 || dataoffset > svlen)	1174	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	1175	croak ("dataoffset outside of data scalar");
1433		1176
1434	if (ix == REQ_WRITE)	1177	if (ix == EIO_WRITE)
1435	{	1178	{
1436	/* write: check length and adjust. */	1179	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	1180	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	1181	len = svlen - dataoffset;
1439	}	1182	}
1440	else	1183	else
1441	{	1184	{
1442	/* read: grow scalar as necessary */	1185	/* read: check type and grow scalar as necessary */
		1186	SvUPGRADE (data, SVt_PV);
1443	svptr = SvGROW (data, length + dataoffset + 1);	1187	svptr = SvGROW (data, len + dataoffset + 1);
1444	}	1188	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		1189
1449	{	1190	{
1450	dREQ;	1191	dREQ;
1451		1192
1452	req->type = ix;	1193	req->type = ix;
1453	req->sv1 = newSVsv (fh);	1194	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1195	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	1196	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	1197	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	1198	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	1199	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	1200	req->stroffset = dataoffset;
1461		1201
1462	if (!SvREADONLY (data))	1202	if (!SvREADONLY (data))
1463	{	1203	{
1464	SvREADONLY_on (data);	1204	SvREADONLY_on (data);
1465	req->flags |= FLAG_SV1_RO_OFF;	1205	req->flags |= FLAG_SV2_RO_OFF;
1466	}	1206	}
1467		1207
1468	REQ_SEND;	1208	REQ_SEND;
1469	}	1209	}
1470	}	1210	}
1471		1211
1472	void	1212	void
1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1213	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1474	PROTOTYPE: $$;$	1214	ALIAS:
		1215	aio_readlink = EIO_READLINK
		1216	aio_realpath = EIO_REALPATH
1475	PPCODE:	1217	PPCODE:
1476	{	1218	{
1477	SV *data;
1478	dREQ;	1219	dREQ;
1479		1220
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	1221	req->type = ix;
1484	req->sv1 = newSVsv (path);	1222	req_set_path1 (req, pathname);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		1223
1489	REQ_SEND;	1224	REQ_SEND;
1490	}	1225	}
1491		1226
1492	void	1227	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	1228	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$
1495	PPCODE:	1229	PPCODE:
1496	{	1230	{
		1231	int ifd = s_fileno_croak (in_fh , 0);
		1232	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	1233	dREQ;
1498		1234
1499	req->type = REQ_SENDFILE;	1235	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	1236	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1237	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	1238	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1239	req->int2 = ifd;
1504	req->offs = in_offset;	1240	req->offs = in_offset;
1505	req->size = length;	1241	req->size = length;
1506		1242
1507	REQ_SEND;	1243	REQ_SEND;
1508	}	1244	}
1509		1245
1510	void	1246	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	1247	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1512	PROTOTYPE: $$$;$
1513	PPCODE:	1248	PPCODE:
1514	{	1249	{
		1250	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	1251	dREQ;
1516		1252
1517	req->type = REQ_READAHEAD;	1253	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	1254	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1255	req->int1 = fd;
1520	req->offs = offset;	1256	req->offs = offset;
1521	req->size = length;	1257	req->size = length;
1522		1258
1523	REQ_SEND;	1259	REQ_SEND;
1524	}	1260	}
1525		1261
1526	void	1262	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1263	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1528	ALIAS:	1264	ALIAS:
1529	aio_stat = REQ_STAT	1265	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1266	aio_lstat = EIO_LSTAT
		1267	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1268	PPCODE:
1532	{	1269	{
1533	dREQ;	1270	dREQ;
1534		1271
1535	req->ptr2 = malloc (sizeof (Stat_t));
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);	1272	req->sv1 = newSVsv (fh_or_path);
1544		1273	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1545	if (SvPOK (fh_or_path))
1546	{
1547	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}
1550	else
1551	{
1552	req->type = REQ_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}
1555
1556	REQ_SEND;	1274	REQ_SEND;
1557	}	1275	}
		1276
		1277	UV
		1278	major (UV dev)
		1279	ALIAS:
		1280	minor = 1
		1281	CODE:
		1282	RETVAL = ix ? major (dev) : minor (dev);
		1283	OUTPUT:
		1284	RETVAL
		1285
		1286	UV
		1287	makedev (UV maj, UV min)
		1288	CODE:
		1289	RETVAL = makedev (maj, min);
		1290	OUTPUT:
		1291	RETVAL
1558		1292
1559	void	1293	void
1560	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1294	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1561	PPCODE:	1295	PPCODE:
1562	{	1296	{
1563	dREQ;	1297	dREQ;
1564		1298
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1299	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1300	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1301	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1568
1569	if (SvPOK (fh_or_path))
1570	{
1571	req->type = REQ_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}
1574	else
1575	{
1576	req->type = REQ_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}
1579		1302
1580	REQ_SEND;	1303	REQ_SEND;
1581	}	1304	}
1582		1305
1583	void	1306	void
		1307	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	dREQ;
		1311
		1312	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1313	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1319	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1320	ALIAS:
		1321	aio_chmod = EIO_CHMOD
		1322	aio_mkdir = EIO_MKDIR
1585	PPCODE:	1323	PPCODE:
1586	{	1324	{
1587	dREQ;	1325	dREQ;
1588		1326
1589	req->mode = mode;	1327	req->int2 = mode;
1590	req->sv1 = newSVsv (fh_or_path);	1328	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1591
1592	if (SvPOK (fh_or_path))
1593	{
1594	req->type = REQ_CHMOD;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}
1597	else
1598	{
1599	req->type = REQ_FCHMOD;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}
1602		1329
1603	REQ_SEND;	1330	REQ_SEND;
1604	}	1331	}
1605		1332
1606	void	1333	void
…		…
1609	{	1336	{
1610	dREQ;	1337	dREQ;
1611		1338
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1339	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1340	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1341	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1615
1616	if (SvPOK (fh_or_path))
1617	{
1618	req->type = REQ_CHOWN;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}
1621	else
1622	{
1623	req->type = REQ_FCHOWN;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}
1626		1342
1627	REQ_SEND;	1343	REQ_SEND;
		1344	}
		1345
		1346	void
		1347	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1348	PPCODE:
		1349	{
		1350	dREQ;
		1351
		1352	req->type = EIO_READDIR;
		1353	req->sv1 = newSVsv (pathname);
		1354	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1355	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1356
		1357	if (flags & EIO_READDIR_DENTS)
		1358	req->int1 |= EIO_READDIR_CUSTOM2;
		1359
		1360	REQ_SEND;
1628	}	1361	}
1629		1362
1630	void	1363	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1364	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1632	ALIAS:	1365	ALIAS:
1633	aio_unlink = REQ_UNLINK	1366	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1367	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1368	aio_readdir = EIO_READDIR
1636	PPCODE:	1369	PPCODE:
1637	{	1370	{
1638	dREQ;	1371	dREQ;
1639		1372
1640	req->type = ix;	1373	req->type = ix;
1641	req->sv1 = newSVsv (pathname);	1374	req_set_path1 (req, pathname);
1642	req->ptr1 = SvPVbyte_nolen (req->sv1);
1643		1375
1644	REQ_SEND;	1376	REQ_SEND;
1645	}	1377	}
1646		1378
1647	void	1379	void
		1380	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1381	ALIAS:
		1382	aio_link = EIO_LINK
		1383	aio_symlink = EIO_SYMLINK
		1384	aio_rename = EIO_RENAME
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388	eio_wd wd2;
		1389
		1390	req->type = ix;
		1391	req_set_path1 (req, oldpath);
		1392	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1393	req->int3 = (long)wd2;
		1394
		1395	REQ_SEND;
		1396	}
		1397
		1398	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1399	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1649	PPCODE:	1400	PPCODE:
1650	{	1401	{
1651	dREQ;	1402	dREQ;
1652		1403
1653	req->type = REQ_MKDIR;	1404	req->type = EIO_MKNOD;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;	1405	req->int2 = (mode_t)mode;
1657		1406	req->offs = dev;
1658	REQ_SEND;	1407	req_set_path1 (req, pathname);
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:
1664	aio_link = REQ_LINK
1665	aio_symlink = REQ_SYMLINK
1666	aio_rename = REQ_RENAME
1667	PPCODE:
1668	{
1669	dREQ;
1670
1671	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);
1674	req->sv1 = newSVsv (newpath);
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1408
1677	REQ_SEND;	1409	REQ_SEND;
1678	}	1410	}
1679		1411
1680	void	1412	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1413	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1682	PPCODE:	1414	ALIAS:
		1415	aio_mtouch = EIO_MTOUCH
		1416	aio_msync = EIO_MSYNC
		1417	PPCODE:
1683	{	1418	{
1684	dREQ;	1419	STRLEN svlen;
1685		1420	char *svptr = SvPVbyte (data, svlen);
		1421	UV len = SvUV (length);
		1422
		1423	if (offset < 0)
		1424	offset += svlen;
		1425
		1426	if (offset < 0 || offset > svlen)
		1427	croak ("offset outside of scalar");
		1428
		1429	if (!SvOK (length) || len + offset > svlen)
		1430	len = svlen - offset;
		1431
		1432	{
		1433	dREQ;
		1434
		1435	req->type = ix;
		1436	req->sv2 = SvREFCNT_inc (data);
		1437	req->ptr2 = (char *)svptr + offset;
		1438	req->size = len;
		1439	req->int1 = flags;
		1440
		1441	REQ_SEND;
		1442	}
		1443	}
		1444
		1445	void
		1446	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1447	PPCODE:
		1448	{
		1449	STRLEN svlen;
		1450	char *svptr = SvPVbyte (data, svlen);
		1451	UV len = SvUV (length);
		1452
		1453	if (offset < 0)
		1454	offset += svlen;
		1455
		1456	if (offset < 0 || offset > svlen)
		1457	croak ("offset outside of scalar");
		1458
		1459	if (!SvOK (length) || len + offset > svlen)
		1460	len = svlen - offset;
		1461
		1462	{
		1463	dREQ;
		1464
1686	req->type = REQ_MKNOD;	1465	req->type = EIO_MLOCK;
1687	req->sv1 = newSVsv (pathname);	1466	req->sv2 = SvREFCNT_inc (data);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);	1467	req->ptr2 = (char *)svptr + offset;
1689	req->mode = (mode_t)mode;
1690	req->offs = dev;	1468	req->size = len;
1691		1469
1692	REQ_SEND;	1470	REQ_SEND;
		1471	}
		1472	}
		1473
		1474	void
		1475	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1476	PPCODE:
		1477	{
		1478	dREQ;
		1479
		1480	req->type = EIO_MLOCKALL;
		1481	req->int1 = flags;
		1482
		1483	REQ_SEND;
1693	}	1484	}
1694		1485
1695	void	1486	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1487	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:	1488	PPCODE:
1698	{	1489	{
1699	dREQ;	1490	dREQ;
1700		1491
1701	req->type = REQ_BUSY;	1492	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	1493	req->nv1 = delay < 0. ? 0. : delay;
1703		1494
1704	REQ_SEND;	1495	REQ_SEND;
1705	}	1496	}
1706		1497
1707	void	1498	void
1708	aio_group (SV *callback=&PL_sv_undef)	1499	aio_group (SV *callback=&PL_sv_undef)
1709	PROTOTYPE: ;$
1710	PPCODE:	1500	PPCODE:
1711	{	1501	{
1712	dREQ;	1502	dREQ;
1713		1503
1714	req->type = REQ_GROUP;	1504	req->type = EIO_GROUP;
1715		1505
1716	req_send (req);	1506	req_submit (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1507	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	1508	}
1719		1509
1720	void	1510	void
1721	aio_nop (SV *callback=&PL_sv_undef)	1511	aio_nop (SV *callback=&PL_sv_undef)
		1512	ALIAS:
		1513	aio_nop = EIO_NOP
		1514	aio_sync = EIO_SYNC
1722	PPCODE:	1515	PPCODE:
1723	{	1516	{
1724	dREQ;	1517	dREQ;
1725		1518
1726	req->type = REQ_NOP;	1519	req->type = ix;
1727		1520
1728	REQ_SEND;	1521	REQ_SEND;
1729	}	1522	}
1730		1523
1731	int	1524	int
1732	aioreq_pri (int pri = 0)	1525	aioreq_pri (int pri = 0)
1733	PROTOTYPE: ;$
1734	CODE:	1526	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	1527	RETVAL = next_pri;
1736	if (items > 0)	1528	if (items > 0)
1737	{	1529	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	1530	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	1531	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	1532	next_pri = pri;
1741	}	1533	}
1742	OUTPUT:	1534	OUTPUT:
1743	RETVAL	1535	RETVAL
1744		1536
1745	void	1537	void
1746	aioreq_nice (int nice = 0)	1538	aioreq_nice (int nice = 0)
1747	CODE:	1539	CODE:
1748	nice = next_pri - nice;	1540	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	1541	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	1542	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	1543	next_pri = nice;
1752		1544
1753	void	1545	void
1754	flush ()	1546	flush ()
1755	PROTOTYPE:
1756	CODE:	1547	CODE:
1757	while (nreqs)	1548	while (eio_nreqs ())
1758	{	1549	{
1759	poll_wait ();	1550	poll_wait ();
1760	poll_cb ();	1551	poll_cb ();
1761	}	1552	}
1762		1553
1763	int	1554	int
1764	poll()	1555	poll ()
1765	PROTOTYPE:
1766	CODE:	1556	CODE:
1767	poll_wait ();	1557	poll_wait ();
1768	RETVAL = poll_cb ();	1558	RETVAL = poll_cb ();
1769	OUTPUT:	1559	OUTPUT:
1770	RETVAL	1560	RETVAL
1771		1561
1772	int	1562	int
1773	poll_fileno()	1563	poll_fileno ()
1774	PROTOTYPE:
1775	CODE:	1564	CODE:
1776	RETVAL = respipe [0];	1565	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	1566	OUTPUT:
1778	RETVAL	1567	RETVAL
1779		1568
1780	int	1569	int
1781	poll_cb(...)	1570	poll_cb (...)
1782	PROTOTYPE:	1571	PROTOTYPE:
1783	CODE:	1572	CODE:
1784	RETVAL = poll_cb ();	1573	RETVAL = poll_cb ();
1785	OUTPUT:	1574	OUTPUT:
1786	RETVAL	1575	RETVAL
1787		1576
1788	void	1577	void
1789	poll_wait()	1578	poll_wait ()
1790	PROTOTYPE:
1791	CODE:	1579	CODE:
1792	poll_wait ();	1580	poll_wait ();
1793		1581
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	1582	int
1832	nreqs()	1583	nreqs ()
1833	PROTOTYPE:
1834	CODE:	1584	CODE:
1835	RETVAL = nreqs;	1585	RETVAL = eio_nreqs ();
1836	OUTPUT:	1586	OUTPUT:
1837	RETVAL	1587	RETVAL
1838		1588
1839	int	1589	int
1840	nready()	1590	nready ()
1841	PROTOTYPE:
1842	CODE:	1591	CODE:
1843	RETVAL = get_nready ();	1592	RETVAL = eio_nready ();
1844	OUTPUT:	1593	OUTPUT:
1845	RETVAL	1594	RETVAL
1846		1595
1847	int	1596	int
1848	npending()	1597	npending ()
1849	PROTOTYPE:
1850	CODE:	1598	CODE:
1851	RETVAL = get_npending ();	1599	RETVAL = eio_npending ();
1852	OUTPUT:	1600	OUTPUT:
1853	RETVAL	1601	RETVAL
1854		1602
1855	int	1603	int
1856	nthreads()	1604	nthreads ()
1857	PROTOTYPE:
1858	CODE:	1605	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1606	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1607	OUTPUT:
1863	RETVAL	1608	RETVAL
1864		1609
		1610	int
		1611	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1612	CODE:
		1613	RETVAL = posix_fadvise (fh, offset, length, advice);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	IV
		1618	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1619	CODE:
		1620	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1621	OUTPUT:
		1622	RETVAL
		1623
		1624	void
		1625	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1626	PPCODE:
		1627	sv_unmagic (scalar, MMAP_MAGIC);
		1628	{
		1629	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1630	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1631	if (addr == (void *)-1)
		1632	XSRETURN_NO;
		1633
		1634	sv_force_normal (scalar);
		1635
		1636	/* we store the length in mg_obj, as namlen is I32 :/ */
		1637	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1638	->mg_obj = (SV *)length;
		1639
		1640	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1641
		1642	if (!(prot & PROT_WRITE))
		1643	SvREADONLY_on (scalar);
		1644
		1645	if (SvLEN (scalar))
		1646	Safefree (SvPVX (scalar));
		1647
		1648	SvPVX (scalar) = (char *)addr;
		1649	SvCUR_set (scalar, length);
		1650	SvLEN_set (scalar, 0);
		1651	SvPOK_only (scalar);
		1652
		1653	XSRETURN_YES;
		1654	}
		1655
		1656	void
		1657	munmap (SV *scalar)
		1658	CODE:
		1659	sv_unmagic (scalar, MMAP_MAGIC);
		1660
		1661	int
		1662	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1663	ALIAS:
		1664	mprotect = 1
		1665	CODE:
		1666	{
		1667	STRLEN svlen;
		1668	void *addr = SvPVbyte (scalar, svlen);
		1669	size_t len = SvUV (length);
		1670
		1671	if (offset < 0)
		1672	offset += svlen;
		1673
		1674	if (offset < 0 || offset > svlen)
		1675	croak ("offset outside of scalar");
		1676
		1677	if (!SvOK (length) || len + offset > svlen)
		1678	len = svlen - offset;
		1679
		1680	addr = (void *)(((intptr_t)addr) + offset);
		1681	eio_page_align (&addr, &len);
		1682
		1683	switch (ix)
		1684	{
		1685	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1686	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1687	}
		1688	}
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
		1693	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1694	CODE:
		1695	{
		1696	STRLEN svlen;
		1697	void *addr = SvPVbyte (scalar, svlen);
		1698	size_t len = SvUV (length);
		1699
		1700	if (offset < 0)
		1701	offset += svlen;
		1702
		1703	if (offset < 0 || offset > svlen)
		1704	croak ("offset outside of scalar");
		1705
		1706	if (!SvOK (length) || len + offset > svlen)
		1707	len = svlen - offset;
		1708
		1709	addr = (void *)(((intptr_t)addr) + offset);
		1710	eio_page_align (&addr, &len);
		1711	#if _POSIX_MEMLOCK_RANGE
		1712	RETVAL = munlock (addr, len);
		1713	#else
		1714	RETVAL = ((errno = ENOSYS), -1);
		1715	#endif
		1716	}
		1717	OUTPUT:
		1718	RETVAL
		1719
		1720	int
		1721	munlockall ()
		1722	CODE:
		1723	#if _POSIX_MEMLOCK
		1724	munlockall ();
		1725	#else
		1726	RETVAL = -1;
		1727	errno = ENOSYS;
		1728	#endif
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	void _on_next_submit (SV *cb)
		1733	CODE:
		1734	SvREFCNT_dec (on_next_submit);
		1735	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1736
1865	PROTOTYPES: DISABLE	1737	PROTOTYPES: DISABLE
1866		1738
		1739	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1740
		1741	void
		1742	DESTROY (SV *self)
		1743	CODE:
		1744	{
		1745	aio_wd wd = SvAIO_WD (self);
		1746	#if HAVE_AT
		1747	SV *callback = &PL_sv_undef;
		1748	dREQ; /* clobbers next_pri :/ */
		1749	req->type = EIO_WD_CLOSE;
		1750	req->wd = wd;
		1751	REQ_SEND;
		1752	#else
		1753	eio_wd_close_sync (wd);
		1754	#endif
		1755	}
		1756
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1757	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		1758
1869	void	1759	void
1870	cancel (aio_req_ornot req)	1760	cancel (aio_req_ornot req)
1871	CODE:	1761	CODE:
1872	req_cancel (req);	1762	eio_cancel (req);
1873		1763
1874	void	1764	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1765	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1876	CODE:	1766	PPCODE:
		1767	{
		1768	if (GIMME_V != G_VOID)
		1769	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1770
		1771	if (items > 1)
		1772	{
		1773	SV *cb_cv =get_cb (callback);
		1774
1877	SvREFCNT_dec (req->callback);	1775	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	1776	req->callback = SvREFCNT_inc (cb_cv);
		1777	}
		1778	}
1879		1779
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1780	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		1781
1882	void	1782	void
1883	add (aio_req grp, ...)	1783	add (aio_req grp, ...)
1884	PPCODE:	1784	PPCODE:
1885	{	1785	{
1886	int i;	1786	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		1787
1892	if (grp->int1 == 2)	1788	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1789	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		1790
1895	for (i = 1; i < items; ++i )	1791	for (i = 1; i < items; ++i )
1896	{	1792	{
		1793	aio_req req;
		1794
1897	if (GIMME_V != G_VOID)	1795	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1796	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		1797
1900	req = SvAIO_REQ (ST (i));	1798	req = SvAIO_REQ (ST (i));
1901		1799
1902	if (req)	1800	if (req)
1903	{	1801	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	1802	}
1916	}	1803	}
1917		1804
1918	void	1805	void
1919	cancel_subs (aio_req_ornot req)	1806	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	1815	AV *av;
1929		1816
1930	grp->errorno = errno;	1817	grp->errorno = errno;
1931		1818
1932	av = newAV ();	1819	av = newAV ();
		1820	av_extend (av, items - 1);
1933		1821
1934	for (i = 1; i < items; ++i )	1822	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	1823	av_push (av, newSVsv (ST (i)));
1936		1824
1937	SvREFCNT_dec (grp->sv1);	1825	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	1832	grp->errorno = errorno;
1945		1833
1946	void	1834	void
1947	limit (aio_req grp, int limit)	1835	limit (aio_req grp, int limit)
1948	CODE:	1836	CODE:
1949	grp->int2 = limit;	1837	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		1838
1952	void	1839	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	1840	feed (aio_req grp, SV *callback=&PL_sv_undef)
1954	CODE:	1841	CODE:
1955	{	1842	{
1956	SvREFCNT_dec (grp->sv2);	1843	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	1844	grp->sv2 = newSVsv (callback);
		1845	grp->feed = aio_grp_feed;
1958		1846
1959	if (grp->int2 <= 0)	1847	if (grp->int2 <= 0)
1960	grp->int2 = 2;	1848	grp->int2 = 2;
1961		1849
1962	aio_grp_feed (grp);	1850	eio_grp_limit (grp, grp->int2);
1963	}	1851	}
1964		1852

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