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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.94 by root, Sun Nov 26 18:28:37 2006 UTC vs.
Revision 1.196 by root, Tue Sep 27 00:41:51 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>
22	#include <stdlib.h>	12	#include <stdlib.h>
23	#include <errno.h>	13	#include <errno.h>
24	#include <sys/time.h>
25	#include <sys/select.h>
26	#include <sys/types.h>	14	#include <sys/types.h>
27	#include <sys/stat.h>	15	#include <sys/stat.h>
28	#include <limits.h>	16	#include <limits.h>
29	#include <unistd.h>
30	#include <fcntl.h>	17	#include <fcntl.h>
31	#include <signal.h>
32	#include <sched.h>	18	#include <sched.h>
33		19
34	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
35	# if __linux
36	# include <sys/sendfile.h>
37	# elif __freebsd
38	# include <sys/socket.h>
39	# include <sys/uio.h>	21	# include <sys/mman.h>
40	# elif __hpux	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
41	# include <sys/socket.h>	69	#include <sys/time.h>
42	# elif __solaris /* not yet */
43	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		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
44	# else	295	# else
45	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46	# endif	297	# endif
47	#endif	298	#endif
48		299	#ifndef MAP_HUGETLB
49	/* number of seconds after which idle threads exit */	300	# define MAP_HUGETLB 0
50	#define IDLE_TIMEOUT 10
51
52	/* used for struct dirent, AIX doesn't provide it */
53	#ifndef NAME_MAX
54	# define NAME_MAX 4096
55	#endif
56
57	#ifndef PTHREAD_STACK_MIN
58	/* care for broken platforms, e.g. windows */
59	# define PTHREAD_STACK_MIN 16384
60	#endif
61
62	#if __ia64
63	# define STACKSIZE 65536
64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65	# define STACKSIZE PTHREAD_STACK_MIN
66	#else
67	# define STACKSIZE 16384
68	#endif
69
70	/* wether word reads are potentially non-atomic.
71	* this is conservatice, likely most arches this runs
72	* on have atomic word read/writes.
73	*/
74	#ifndef WORDACCESS_UNSAFE
75	# if __i386 || __x86_64
76	# define WORDACCESS_UNSAFE 0
77	# else
78	# define WORDACCESS_UNSAFE 1
79	# endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
80	#endif	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
81		314
82	/* buffer size for various temporary buffers */	315	#ifndef makedev
83	#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
84		324
85	#define dBUF \	325	#ifndef PAGESIZE
86	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
87	LOCK (wrklock); \	327	#endif
88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
89	UNLOCK (wrklock); \
90	if (!aio_buf) \
91	return -1;
92
93	typedef SV SV8; /* byte-sv, used for argument-checking */
94		328
95	enum {	329	enum {
96	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
97	REQ_OPEN, REQ_CLOSE,
98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
99	REQ_SENDFILE,
100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101	REQ_FSYNC, REQ_FDATASYNC,
102	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
103	REQ_MKNOD, REQ_READDIR,
104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105	REQ_GROUP, REQ_NOP,
106	REQ_BUSY,
107	};	331	};
108		332
109	#define AIO_REQ_KLASS "IO::AIO::REQ"
110	#define AIO_GRP_KLASS "IO::AIO::GRP"
111
112	typedef struct aio_cb
113	{
114	struct aio_cb *volatile next;
115
116	SV *callback, *fh;
117	SV *sv1, *sv2;
118	void *ptr1, *ptr2;
119	off_t offs;
120	size_t size;
121	ssize_t result;
122
123	STRLEN stroffset;
124	int type;
125	int int1, int2;
126	int errorno;
127	mode_t mode; /* open */
128
129	unsigned char flags;
130	unsigned char pri;
131
132	SV *self; /* the perl counterpart of this request, if any */
133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
134	} aio_cb;
135
136	enum {
137	FLAG_CANCELLED = 0x01, /* request was cancelled */
138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140	};
141
142	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
144		336
145	enum {	337	static SV *on_next_submit;
146	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	339	static int max_outstanding;
148		340
149	DEFAULT_PRI = 0,	341	static s_epipe respipe;
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		342
154	#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156	static unsigned int max_poll_time = 0;
157	static unsigned int max_poll_reqs = 0;
158
159	/* calculcate time difference in ~1/AIO_TICKS of a second */
160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161	{
162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
164	}
165
166	static pthread_t main_tid;
167	static int main_sig;
168	static int block_sig_level;
169
170	void block_sig ()
171	{
172	sigset_t ss;
173
174	if (block_sig_level++)
175	return;
176
177	if (!main_sig)
178	return;
179
180	sigemptyset (&ss);
181	sigaddset (&ss, main_sig);
182	pthread_sigmask (SIG_BLOCK, &ss, 0);
183	}
184
185	void unblock_sig ()
186	{
187	sigset_t ss;
188
189	if (--block_sig_level)
190	return;
191
192	if (!main_sig)
193	return;
194
195	sigemptyset (&ss);
196	sigaddset (&ss, main_sig);
197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198	}
199
200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202	static unsigned int started, idle, wanted;
203
204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206	#else
207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208	#endif
209
210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213	/* worker threads management */
214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216	typedef struct worker {
217	/* locked by wrklock */
218	struct worker *prev, *next;
219
220	pthread_t tid;
221
222	/* locked by reslock, reqlock or wrklock */
223	aio_req req; /* currently processed request */
224	void *dbuf;
225	DIR *dirp;
226	} worker;
227
228	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230	static void worker_clear (worker *wrk)
231	{
232	if (wrk->dirp)
233	{
234	closedir (wrk->dirp);
235	wrk->dirp = 0;
236	}
237
238	if (wrk->dbuf)
239	{
240	free (wrk->dbuf);
241	wrk->dbuf = 0;
242	}
243	}
244
245	static void worker_free (worker *wrk)
246	{
247	wrk->next->prev = wrk->prev;
248	wrk->prev->next = wrk->next;
249
250	free (wrk);
251	}
252
253	static volatile unsigned int nreqs, nready, npending;
254	static volatile unsigned int max_idle = 4;
255	static volatile unsigned int max_outstanding = 0xffffffff;
256	static int respipe [2];
257
258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262	#if WORDACCESS_UNSAFE
263
264	static unsigned int get_nready ()
265	{
266	unsigned int retval;
267
268	LOCK (reqlock);
269	retval = nready;
270	UNLOCK (reqlock);
271
272	return retval;
273	}
274
275	static unsigned int get_npending ()
276	{
277	unsigned int retval;
278
279	LOCK (reslock);
280	retval = npending;
281	UNLOCK (reslock);
282
283	return retval;
284	}
285
286	static unsigned int get_nthreads ()
287	{
288	unsigned int retval;
289
290	LOCK (wrklock);
291	retval = started;
292	UNLOCK (wrklock);
293
294	return retval;
295	}
296
297	#else
298
299	# define get_nready() nready
300	# define get_npending() npending
301	# define get_nthreads() started
302
303	#endif
304
305	/*
306	* a somewhat faster data structure might be nice, but
307	* with 8 priorities this actually needs <20 insns
308	* per shift, the most expensive operation.
309	*/
310	typedef struct {
311	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312	int size;
313	} reqq;
314
315	static reqq req_queue;
316	static reqq res_queue;
317
318	int reqq_push (reqq *q, aio_req req)
319	{
320	int pri = req->pri;
321	req->next = 0;
322
323	if (q->qe[pri])
324	{
325	q->qe[pri]->next = req;
326	q->qe[pri] = req;
327	}
328	else
329	q->qe[pri] = q->qs[pri] = req;
330
331	return q->size++;
332	}
333
334	aio_req reqq_shift (reqq *q)
335	{
336	int pri;
337
338	if (!q->size)
339	return 0;
340
341	--q->size;
342
343	for (pri = NUM_PRI; pri--; )
344	{
345	aio_req req = q->qs[pri];
346
347	if (req)
348	{
349	if (!(q->qs[pri] = req->next))
350	q->qe[pri] = 0;
351
352	return req;
353	}
354	}
355
356	abort ();
357	}
358
359	static int poll_cb ();
360	static int req_invoke (aio_req req);
361	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
362	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
363		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
364	/* must be called at most once */	358	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
366	{	360	{
367	if (!req->self)	361	if (!req->self)
368	{	362	{
369	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371	}	365	}
372		366
373	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		368	}
		369
		370	static SV *
		371	newSVaio_wd (aio_wd wd)
		372	{
		373	return sv_bless (newRV_noinc (newSViv ((long)wd)), aio_wd_stash);
374	}	374	}
375		375
376	static aio_req SvAIO_REQ (SV *sv)	376	static aio_req SvAIO_REQ (SV *sv)
377	{	377	{
378	MAGIC *mg;	378	MAGIC *mg;
379		379
380	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	380	if (!SvROK (sv)
		381	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		382	&& SvSTASH (SvRV (sv)) != aio_req_stash
		383	&& !sv_derived_from (sv, "IO::AIO::REQ")))
381	croak ("object of class " AIO_REQ_KLASS " expected");	384	croak ("object of class IO::AIO::REQ expected");
382		385
383	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	386	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384		387
385	return mg ? (aio_req)mg->mg_ptr : 0;	388	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	389	}
387		390
		391	static aio_wd SvAIO_WD (SV *sv)
		392	{
		393	if (!SvROK (sv)
		394	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		395	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		396	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		397
		398	return (aio_wd)(long)SvIVX (SvRV (sv));
		399	}
		400
388	static void aio_grp_feed (aio_req grp)	401	static void aio_grp_feed (aio_req grp)
389	{	402	{
390	block_sig ();	403	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	404	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	405	dSP;
399		406
400	ENTER;	407	ENTER;
401	SAVETMPS;	408	SAVETMPS;
402	PUSHMARK (SP);	409	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	410	XPUSHs (req_sv (grp, aio_grp_stash));
404	PUTBACK;	411	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	412	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	413	SPAGAIN;
407	FREETMPS;	414	FREETMPS;
408	LEAVE;	415	LEAVE;
409	}
410
411	/* stop if no progress has been made */
412	if (old_len == grp->size)
413	{
414	SvREFCNT_dec (grp->sv2);
415	grp->sv2 = 0;
416	break;
417	}
418	}	416	}
419
420	unblock_sig ();
421	}	417	}
422		418
423	static void aio_grp_dec (aio_req grp)	419	static void req_submit (eio_req *req)
424	{	420	{
425	--grp->size;	421	eio_submit (req);
426		422
427	/* call feeder, if applicable */	423	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	424	{
433	block_sig ();	425	dSP;
		426	SV *cb = sv_2mortal (on_next_submit);
434		427
435	if (!req_invoke (grp))	428	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		429
442	req_free (grp);	430	PUSHMARK (SP);
443	unblock_sig ();	431	PUTBACK;
		432	call_sv (cb, G_DISCARD | G_EVAL);
444	}	433	}
445	}	434	}
446		435
447	static int req_invoke (aio_req req)	436	static int req_invoke (eio_req *req)
448	{	437	{
449	dSP;
450
451	if (req->flags & FLAG_SV1_RO_OFF)	438	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	439	SvREADONLY_off (req->sv2);
453		440
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	441	if (!EIO_CANCELLED (req) && req->callback)
455	{	442	{
		443	dSP;
		444	static SV *sv_result_cache; /* caches the result integer SV */
		445	SV *sv_result;
		446
456	ENTER;	447	ENTER;
457	SAVETMPS;	448	SAVETMPS;
458	PUSHMARK (SP);	449	PUSHMARK (SP);
459	EXTEND (SP, 1);	450	EXTEND (SP, 1);
460		451
		452	/* do not recreate the result IV from scratch each time */
		453	if (expect_true (sv_result_cache))
		454	{
		455	sv_result = sv_result_cache; sv_result_cache = 0;
		456	SvIV_set (sv_result, req->result);
		457	SvIOK_only (sv_result);
		458	}
		459	else
		460	{
		461	sv_result = newSViv (req->result);
		462	SvREADONLY_on (sv_result);
		463	}
		464
461	switch (req->type)	465	switch (req->type)
462	{	466	{
		467	case EIO_WD_OPEN:
		468	PUSHs (sv_2mortal (newSVaio_wd (req->wd)));
		469	break;
		470
463	case REQ_READDIR:	471	case EIO_READDIR:
464	{	472	{
465	SV *rv = &PL_sv_undef;	473	SV *rv = &PL_sv_undef;
466		474
467	if (req->result >= 0)	475	if (req->result >= 0)
468	{	476	{
469	int i;	477	int i;
470	char *buf = req->ptr2;	478	char *names = (char *)req->ptr2;
		479	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471	AV *av = newAV ();	480	AV *av = newAV ();
472		481
473	av_extend (av, req->result - 1);	482	av_extend (av, req->result - 1);
474		483
475	for (i = 0; i < req->result; ++i)	484	for (i = 0; i < req->result; ++i)
476	{	485	{
477	SV *sv = newSVpv (buf, 0);	486	if (req->int1 & EIO_READDIR_DENTS)
		487	{
		488	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478		489
		490	if (req->int1 & EIO_READDIR_CUSTOM2)
		491	{
		492	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		493	AV *avent = newAV ();
		494
		495	av_extend (avent, 2);
		496
		497	if (!sv_type [ent->type])
		498	{
		499	sv_type [ent->type] = newSViv (ent->type);
		500	SvREADONLY_on (sv_type [ent->type]);
		501	}
		502
		503	av_store (avent, 0, namesv);
		504	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		505	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		506
		507	av_store (av, i, newRV_noinc ((SV *)avent));
		508	}
		509	else
479	av_store (av, i, sv);	510	av_store (av, i, namesv);
		511
		512	++ent;
		513	}
		514	else
		515	{
		516	SV *name = newSVpv (names, 0);
		517	av_store (av, i, name);
480	buf += SvCUR (sv) + 1;	518	names += SvCUR (name) + 1;
		519	}
481	}	520	}
482		521
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	522	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	523	}
485		524
486	PUSHs (rv);	525	PUSHs (rv);
		526
		527	if (req->int1 & EIO_READDIR_CUSTOM1)
		528	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487	}	529	}
488	break;	530	break;
489		531
490	case REQ_OPEN:	532	case EIO_OPEN:
491	{	533	{
492	/* convert fd to fh */	534	/* convert fd to fh */
493	SV *fh;	535	SV *fh = &PL_sv_undef;
494		536
495	PUSHs (sv_2mortal (newSViv (req->result)));	537	if (req->result >= 0)
496	PUTBACK;	538	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	539	GV *gv = (GV *)sv_newmortal ();
498	SPAGAIN;	540	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		541	char sym [64];
		542	int symlen;
		543
		544	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		545	gv_init (gv, aio_stash, sym, symlen, 0);
499		546
500	fh = POPs;	547	symlen = snprintf (
501	PUSHMARK (SP);	548	sym,
		549	sizeof (sym),
		550	"%s&=%d",
		551	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		552	(int)req->result
		553	);
		554
		555	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		556	fh = (SV *)gv;
		557	}
		558
502	XPUSHs (fh);	559	PUSHs (fh);
503	}	560	}
504	break;	561	break;
505		562
		563	case EIO_STATVFS:
		564	case EIO_FSTATVFS:
		565	{
		566	SV *rv = &PL_sv_undef;
		567
		568	#ifndef _WIN32
		569	if (req->result >= 0)
		570	{
		571	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		572	HV *hv = newHV ();
		573
		574	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		575
		576	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		577	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		578	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		579	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		580	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		581	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		582	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		583	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		584	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		585	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		586	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		587	}
		588	#endif
		589
		590	PUSHs (rv);
		591	}
		592
		593	break;
		594
506	case REQ_GROUP:	595	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	596	req->int1 = 2; /* mark group as finished */
508		597
509	if (req->sv1)	598	if (req->sv1)
510	{	599	{
511	int i;	600	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	604	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	605	PUSHs (*av_fetch (av, i, 0));
517	}	606	}
518	break;	607	break;
519		608
520	case REQ_NOP:	609	case EIO_NOP:
521	case REQ_BUSY:	610	case EIO_BUSY:
522	break;	611	break;
523		612
524	case REQ_READLINK:	613	case EIO_READLINK:
		614	case EIO_REALPATH:
525	if (req->result > 0)	615	if (req->result > 0)
526	{	616	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
527	SvCUR_set (req->sv1, req->result);
528	*SvEND (req->sv1) = 0;
529	PUSHs (req->sv1);
530	}
531	break;	617	break;
532		618
533	case REQ_STAT:	619	case EIO_STAT:
534	case REQ_LSTAT:	620	case EIO_LSTAT:
535	case REQ_FSTAT:	621	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	622	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	623	PL_laststatval = req->result;
		624	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
538	PL_statcache = *(Stat_t *)(req->ptr2);	625	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	626	PUSHs (sv_result);
540	break;	627	break;
541		628
542	case REQ_READ:	629	case EIO_READ:
		630	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	631	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	632	*SvEND (req->sv2) = 0;
545	PUSHs (sv_2mortal (newSViv (req->result)));	633	SvPOK_only (req->sv2);
		634	SvSETMAGIC (req->sv2);
		635	PUSHs (sv_result);
		636	}
546	break;	637	break;
547		638
		639	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		640	if (req->result > 0)
		641	SvIV_set (sv_result, 0);
		642	/* FALLTHROUGH */
		643
548	default:	644	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	645	PUSHs (sv_result);
550	break;	646	break;
551	}	647	}
552		648
553	errno = req->errorno;	649	errno = req->errorno;
554		650
555	PUTBACK;	651	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	652	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	653	SPAGAIN;
		654
		655	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		656	SvREFCNT_dec (sv_result);
		657	else
		658	sv_result_cache = sv_result;
558		659
559	FREETMPS;	660	FREETMPS;
560	LEAVE;	661	LEAVE;
		662
		663	PUTBACK;
561	}	664	}
562		665
563	if (req->grp)
564	{
565	aio_req grp = req->grp;
566
567	/* unlink request */
568	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571	if (grp->grp_first == req)
572	grp->grp_first = req->grp_next;
573
574	aio_grp_dec (grp);
575	}
576
577	return !SvTRUE (ERRSV);	666	return !!SvTRUE (ERRSV);
578	}	667	}
579		668
580	static void req_free (aio_req req)	669	static void req_destroy (aio_req req)
581	{	670	{
582	if (req->self)	671	if (req->self)
583	{	672	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	673	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	674	SvREFCNT_dec (req->self);
586	}	675	}
587		676
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	677	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	678	SvREFCNT_dec (req->sv2);
		679	SvREFCNT_dec (req->sv3);
		680	SvREFCNT_dec (req->sv4);
591	SvREFCNT_dec (req->callback);	681	SvREFCNT_dec (req->callback);
592		682
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	683	Safefree (req);
597	}	684	}
598		685
599	static void req_cancel_subs (aio_req grp)	686	static void req_cancel_subs (aio_req grp)
600	{	687	{
601	aio_req sub;
602
603	if (grp->type != REQ_GROUP)	688	if (grp->type != EIO_GROUP)
604	return;	689	return;
605		690
606	SvREFCNT_dec (grp->sv2);	691	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	692	grp->sv2 = 0;
608		693
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	694	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	695	}
612		696
613	static void req_cancel (aio_req req)	697	static void create_respipe (void)
614	{	698	{
615	req->flags |= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
616		700	croak ("IO::AIO: unable to initialize result pipe");
617	req_cancel_subs (req);
618	}	701	}
619		702
620	static void *aio_proc(void *arg);
621
622	static void start_thread (void)
623	{
624	sigset_t fullsigset, oldsigset;
625	pthread_attr_t attr;
626
627	worker *wrk = calloc (1, sizeof (worker));
628
629	if (!wrk)
630	croak ("unable to allocate worker thread data");
631
632	pthread_attr_init (&attr);
633	pthread_attr_setstacksize (&attr, STACKSIZE);
634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635	#ifdef PTHREAD_SCOPE_PROCESS
636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637	#endif
638
639	sigfillset (&fullsigset);
640
641	LOCK (wrklock);
642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
643
644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
645	{
646	wrk->prev = &wrk_first;
647	wrk->next = wrk_first.next;
648	wrk_first.next->prev = wrk;
649	wrk_first.next = wrk;
650	++started;
651	}
652	else
653	free (wrk);
654
655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
656	UNLOCK (wrklock);
657	}
658
659	static void maybe_start_thread ()
660	{
661	if (get_nthreads () >= wanted)
662	return;
663
664	/* todo: maybe use idle here, but might be less exact */
665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666	return;
667
668	start_thread ();
669	}
670
671	static void req_send (aio_req req)
672	{
673	block_sig ();
674
675	++nreqs;
676
677	LOCK (reqlock);
678	++nready;
679	reqq_push (&req_queue, req);
680	pthread_cond_signal (&reqwait);
681	UNLOCK (reqlock);
682
683	unblock_sig ();
684
685	maybe_start_thread ();
686	}
687
688	static void end_thread (void)
689	{
690	aio_req req;
691
692	Newz (0, req, 1, aio_cb);
693
694	req->type = REQ_QUIT;
695	req->pri = PRI_MAX + PRI_BIAS;
696
697	LOCK (reqlock);
698	reqq_push (&req_queue, req);
699	pthread_cond_signal (&reqwait);
700	UNLOCK (reqlock);
701
702	LOCK (wrklock);
703	--started;
704	UNLOCK (wrklock);
705	}
706
707	static void set_max_idle (int nthreads)
708	{
709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
710	max_idle = nthreads <= 0 ? 1 : nthreads;
711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712	}
713
714	static void min_parallel (int nthreads)
715	{
716	if (wanted < nthreads)
717	wanted = nthreads;
718	}
719
720	static void max_parallel (int nthreads)
721	{
722	if (wanted > nthreads)
723	wanted = nthreads;
724
725	while (started > wanted)
726	end_thread ();
727	}
728
729	static void poll_wait ()	703	static void poll_wait (void)
730	{	704	{
731	fd_set rfd;
732
733	while (nreqs)	705	while (eio_nreqs ())
734	{	706	{
735	int size;	707	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	708
		709	X_LOCK (reslock);
737	size = res_queue.size;	710	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	711	X_UNLOCK (reslock);
739		712
740	if (size)	713	if (size)
741	return;	714	return;
742		715
743	maybe_start_thread ();	716	etp_maybe_start_thread ();
744		717
745	FD_ZERO(&rfd);	718	s_epipe_wait (&respipe);
746	FD_SET(respipe [0], &rfd);
747
748	select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	719	}
750	}	720	}
751		721
752	static int poll_cb ()	722	static int poll_cb (void)
753	{	723	{
754	dSP;
755	int count = 0;
756	int maxreqs = max_poll_reqs;
757	int do_croak = 0;
758	struct timeval tv_start, tv_now;
759	aio_req req;
760
761	if (max_poll_time)
762	gettimeofday (&tv_start, 0);
763
764	block_sig ();
765
766	for (;;)	724	for (;;)
767	{	725	{
768	for (;;)	726	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		727
772	LOCK (reslock);	728	if (res > 0)
773	req = reqq_shift (&res_queue);
774
775	if (req)
776	{
777	--npending;
778
779	if (!res_queue.size)
780	{
781	/* read any signals sent by the worker threads */
782	char buf [32];
783	while (read (respipe [0], buf, 32) == 32)
784	;
785	}
786	}
787
788	UNLOCK (reslock);
789
790	if (!req)
791	break;
792
793	--nreqs;
794
795	if (req->type == REQ_GROUP && req->size)
796	{
797	req->int1 = 1; /* mark request as delayed */
798	continue;
799	}
800	else
801	{
802	if (!req_invoke (req))
803	{
804	req_free (req);
805	unblock_sig ();
806	croak (0);	729	croak (0);
807	}
808		730
809	count++;	731	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	732	return res;
811
812	req_free (req);
813
814	if (maxreqs && !--maxreqs)
815	break;
816
817	if (max_poll_time)
818	{
819	gettimeofday (&tv_now, 0);
820
821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822	break;
823	}
824	}
825
826	if (nreqs <= max_outstanding)
827	break;
828		733
829	poll_wait ();	734	poll_wait ();
830
831	++maxreqs;
832	}	735	}
833
834	unblock_sig ();
835	return count;
836	}	736	}
837		737
838	static void create_pipe ()	738	static void ecb_cold
		739	reinit (void)
839	{	740	{
840	if (pipe (respipe))	741	create_respipe ();
841	croak ("unable to initialize result pipe");
842		742
843	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	743	if (eio_init (want_poll, done_poll) < 0)
844	croak ("cannot set result pipe to nonblocking mode");	744	croak ("IO::AIO: unable to initialise eio library");
845
846	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847	croak ("cannot set result pipe to nonblocking mode");
848	}	745	}
849		746
850	/*****************************************************************************/	747	/*****************************************************************************/
851	/* work around various missing functions */
852		748
853	#if !HAVE_PREADWRITE	749	#if !_POSIX_MAPPED_FILES
854	# define pread aio_pread	750	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
855	# define pwrite aio_pwrite	751	# define munmap(addr,length) (errno = ENOSYS, -1)
856
857	/*
858	* make our pread/pwrite safe against themselves, but not against
859	* normal read/write by using a mutex. slows down execution a lot,
860	* but that's your problem, not mine.
861	*/
862	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865	{
866	ssize_t res;
867	off_t ooffset;
868
869	LOCK (preadwritelock);
870	ooffset = lseek (fd, 0, SEEK_CUR);
871	lseek (fd, offset, SEEK_SET);
872	res = read (fd, buf, count);
873	lseek (fd, ooffset, SEEK_SET);
874	UNLOCK (preadwritelock);
875
876	return res;
877	}
878
879	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
880	{
881	ssize_t res;
882	off_t ooffset;
883
884	LOCK (preadwritelock);
885	ooffset = lseek (fd, 0, SEEK_CUR);
886	lseek (fd, offset, SEEK_SET);
887	res = write (fd, buf, count);
888	lseek (fd, offset, SEEK_SET);
889	UNLOCK (preadwritelock);
890
891	return res;
892	}
893	#endif
894
895	#if !HAVE_FDATASYNC
896	# define fdatasync fsync
897	#endif
898
899	#if !HAVE_READAHEAD
900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901
902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
903	{
904	dBUF;
905
906	while (count > 0)
907	{
908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909
910	pread (fd, aio_buf, len, offset);
911	offset += len;
912	count -= len;
913	}
914
915	errno = 0;
916	}
917
918	#endif
919
920	#if !HAVE_READDIR_R
921	# define readdir_r aio_readdir_r
922
923	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926	{
927	struct dirent *e;
928	int errorno;
929
930	LOCK (readdirlock);
931
932	e = readdir (dirp);
933	errorno = errno;
934
935	if (e)
936	{
937	*res = ent;
938	strcpy (ent->d_name, e->d_name);
939	}
940	else
941	*res = 0;
942
943	UNLOCK (readdirlock);
944
945	errno = errorno;
946	return e ? 0 : -1;
947	}
948	#endif
949
950	/* sendfile always needs emulation */
951	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
952	{
953	ssize_t res;
954
955	if (!count)
956	return 0;
957
958	#if HAVE_SENDFILE
959	# if __linux
960	res = sendfile (ofd, ifd, &offset, count);
961
962	# elif __freebsd
963	/*
964	* Of course, the freebsd sendfile is a dire hack with no thoughts
965	* wasted on making it similar to other I/O functions.
966	*/
967	{
968	off_t sbytes;
969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970
971	if (res < 0 && sbytes)
972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
973	res = sbytes;
974	}
975
976	# elif __hpux
977	res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979	# elif __solaris
980	{
981	struct sendfilevec vec;
982	size_t sbytes;
983
984	vec.sfv_fd = ifd;
985	vec.sfv_flag = 0;
986	vec.sfv_off = offset;
987	vec.sfv_len = count;
988
989	res = sendfilev (ofd, &vec, 1, &sbytes);
990
991	if (res < 0 && sbytes)
992	res = sbytes;
993	}
994
995	# endif	752	#endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000		753
1001	if (res < 0	754	#if !_POSIX_MEMORY_PROTECTION
1002	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	755	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1003	#if __solaris	756	# define PROT_NONE 0
1004	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	757	# define PROT_WRITE 0
		758	# define MAP_PRIVATE 0
		759	# define MAP_SHARED 0
		760	# define MAP_FIXED 0
1005	#endif	761	#endif
1006	)
1007	)
1008	{
1009	/* emulate sendfile. this is a major pain in the ass */
1010	dBUF;
1011		762
1012	res = 0;	763	#define MMAP_MAGIC PERL_MAGIC_ext
1013		764
1014	while (count)	765	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
1015	{	766	{
1016	ssize_t cnt;	767	int old_errno = errno;
1017		768	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	769	errno = old_errno;
1019		770
1020	if (cnt <= 0)	771	mg->mg_obj = 0; /* just in case */
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025		772
1026	cnt = write (ofd, aio_buf, cnt);	773	SvREADONLY_off (sv);
1027		774
1028	if (cnt <= 0)	775	if (SvPVX (sv) != mg->mg_ptr)
1029	{	776	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1030	if (cnt && !res) res = -1;
1031	break;
1032	}
1033		777
1034	offset += cnt;	778	SvCUR_set (sv, 0);
1035	res += cnt;	779	SvPVX (sv) = 0;
1036	count -= cnt;	780	SvOK_off (sv);
1037	}
1038	}
1039		781
1040	return res;	782	return 0;
1041	}	783	}
1042		784
1043	/* read a full directory */	785	static MGVTBL mmap_vtbl = {
1044	static void scandir_ (aio_req req, worker *self)	786	0, 0, 0, 0, mmap_free
1045	{	787	};
1046	DIR *dirp;
1047	union
1048	{
1049	struct dirent d;
1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051	} *u;
1052	struct dirent *entp;
1053	char *name, *names;
1054	int memlen = 4096;
1055	int memofs = 0;
1056	int res = 0;
1057	int errorno;
1058
1059	LOCK (wrklock);
1060	self->dirp = dirp = opendir (req->ptr1);
1061	self->dbuf = u = malloc (sizeof (*u));
1062	req->flags |= FLAG_PTR2_FREE;
1063	req->ptr2 = names = malloc (memlen);
1064	UNLOCK (wrklock);
1065
1066	if (dirp && u && names)
1067	for (;;)
1068	{
1069	errno = 0;
1070	readdir_r (dirp, &u->d, &entp);
1071
1072	if (!entp)
1073	break;
1074
1075	name = entp->d_name;
1076
1077	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078	{
1079	int len = strlen (name) + 1;
1080
1081	res++;
1082
1083	while (memofs + len > memlen)
1084	{
1085	memlen *= 2;
1086	LOCK (wrklock);
1087	req->ptr2 = names = realloc (names, memlen);
1088	UNLOCK (wrklock);
1089
1090	if (!names)
1091	break;
1092	}
1093
1094	memcpy (names + memofs, name, len);
1095	memofs += len;
1096	}
1097	}
1098
1099	if (errno)
1100	res = -1;
1101
1102	req->result = res;
1103	}
1104		788
1105	/*****************************************************************************/	789	/*****************************************************************************/
1106		790
1107	static void *aio_proc (void *thr_arg)	791	static SV * get_cb (SV *cb_sv)
1108	{	792	{
1109	aio_req req;	793	SvGETMAGIC (cb_sv);
1110	struct timespec ts;	794	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1111	worker *self = (worker *)thr_arg;
1112
1113	/* try to distribute timeouts somewhat evenly */
1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115	* (1000000000UL / 1024UL);
1116
1117	for (;;)
1118	{
1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121	LOCK (reqlock);
1122
1123	for (;;)
1124	{
1125	self->req = req = reqq_shift (&req_queue);
1126
1127	if (req)
1128	break;
1129
1130	++idle;
1131
1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133	== ETIMEDOUT)
1134	{
1135	if (idle > max_idle)
1136	{
1137	--idle;
1138	UNLOCK (reqlock);
1139	LOCK (wrklock);
1140	--started;
1141	UNLOCK (wrklock);
1142	goto quit;
1143	}
1144
1145	/* we are allowed to idle, so do so without any timeout */
1146	pthread_cond_wait (&reqwait, &reqlock);
1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148	}
1149
1150	--idle;
1151	}
1152
1153	--nready;
1154
1155	UNLOCK (reqlock);
1156
1157	errno = 0; /* strictly unnecessary */
1158
1159	if (!(req->flags & FLAG_CANCELLED))
1160	switch (req->type)
1161	{
1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173	case REQ_CLOSE: req->result = close (req->int1); break;
1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1177	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1178	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1179	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1180	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1181
1182	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1183	case REQ_FSYNC: req->result = fsync (req->int1); break;
1184	case REQ_READDIR: scandir_ (req, self); break;
1185
1186	case REQ_BUSY:
1187	{
1188	struct timeval tv;
1189
1190	tv.tv_sec = req->int1;
1191	tv.tv_usec = req->int2;
1192
1193	req->result = select (0, 0, 0, 0, &tv);
1194	}
1195
1196	case REQ_GROUP:
1197	case REQ_NOP:
1198	break;
1199
1200	case REQ_QUIT:
1201	goto quit;
1202
1203	default:
1204	req->result = ENOSYS;
1205	break;
1206	}
1207
1208	req->errorno = errno;
1209
1210	LOCK (reslock);
1211
1212	++npending;
1213
1214	if (!reqq_push (&res_queue, req))
1215	{
1216	/* write a dummy byte to the pipe so fh becomes ready */
1217	write (respipe [1], &respipe, 1);
1218
1219	/* optionally signal the main thread asynchronously */
1220	if (main_sig)
1221	pthread_kill (main_tid, main_sig);
1222	}
1223
1224	self->req = 0;
1225	worker_clear (self);
1226
1227	UNLOCK (reslock);
1228	}
1229
1230	quit:
1231	LOCK (wrklock);
1232	worker_free (self);
1233	UNLOCK (wrklock);
1234
1235	return 0;
1236	}
1237
1238	/*****************************************************************************/
1239
1240	static void atfork_prepare (void)
1241	{
1242	LOCK (wrklock);
1243	LOCK (reqlock);
1244	LOCK (reslock);
1245	#if !HAVE_PREADWRITE
1246	LOCK (preadwritelock);
1247	#endif
1248	#if !HAVE_READDIR_R
1249	LOCK (readdirlock);
1250	#endif
1251	}
1252
1253	static void atfork_parent (void)
1254	{
1255	#if !HAVE_READDIR_R
1256	UNLOCK (readdirlock);
1257	#endif
1258	#if !HAVE_PREADWRITE
1259	UNLOCK (preadwritelock);
1260	#endif
1261	UNLOCK (reslock);
1262	UNLOCK (reqlock);
1263	UNLOCK (wrklock);
1264	}
1265
1266	static void atfork_child (void)
1267	{
1268	aio_req prv;
1269
1270	while (prv = reqq_shift (&req_queue))
1271	req_free (prv);
1272
1273	while (prv = reqq_shift (&res_queue))
1274	req_free (prv);
1275
1276	while (wrk_first.next != &wrk_first)
1277	{
1278	worker *wrk = wrk_first.next;
1279
1280	if (wrk->req)
1281	req_free (wrk->req);
1282
1283	worker_clear (wrk);
1284	worker_free (wrk);
1285	}
1286
1287	started = 0;
1288	idle = 0;
1289	nreqs = 0;
1290	nready = 0;
1291	npending = 0;
1292
1293	close (respipe [0]);
1294	close (respipe [1]);
1295	create_pipe ();
1296
1297	atfork_parent ();
1298	}	795	}
1299		796
1300	#define dREQ \	797	#define dREQ \
		798	SV *cb_cv; \
1301	aio_req req; \	799	aio_req req; \
1302	int req_pri = next_pri; \	800	int req_pri = next_pri; \
1303	next_pri = DEFAULT_PRI + PRI_BIAS; \	801	next_pri = EIO_PRI_DEFAULT; \
1304	\	802	\
1305	if (SvOK (callback) && !SvROK (callback)) \	803	cb_cv = get_cb (callback); \
1306	croak ("callback must be undef or of reference type"); \
1307	\	804	\
1308	Newz (0, req, 1, aio_cb); \	805	Newz (0, req, 1, eio_req); \
1309	if (!req) \	806	if (!req) \
1310	croak ("out of memory during aio_req allocation"); \	807	croak ("out of memory during eio_req allocation"); \
1311	\	808	\
1312	req->callback = newSVsv (callback); \	809	req->callback = SvREFCNT_inc (cb_cv); \
1313	req->pri = req_pri	810	req->pri = req_pri
1314		811
1315	#define REQ_SEND \	812	#define REQ_SEND \
		813	PUTBACK; \
1316	req_send (req); \	814	req_submit (req); \
		815	SPAGAIN; \
1317	\	816	\
1318	if (GIMME_V != G_VOID) \	817	if (GIMME_V != G_VOID) \
1319	XPUSHs (req_sv (req, AIO_REQ_KLASS));	818	XPUSHs (req_sv (req, aio_req_stash));
1320		819
		820	static void
		821	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		822	{
		823	if (SvROK (path))
		824	{
		825	AV *av = (AV *)SvRV (path);
		826	SV *wdob;
		827
		828	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		829	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		830
		831	path = AvARRAY (av)[1];
		832	wdob = AvARRAY (av)[0];
		833
		834	if (SvOK (wdob))
		835	{
		836	*wd = SvAIO_WD (wdob);
		837	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		838	}
		839	else
		840	*wd = EIO_INVALID_WD;
		841	}
		842
		843	*pathsv = newSVsv (path);
		844	*ptr = SvPVbyte_nolen (*pathsv);
		845	}
		846
		847	static void
		848	req_set_path1 (aio_req req, SV *path)
		849	{
		850	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		851	}
		852
		853	static void
		854	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		855	{
		856	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		857
		858	switch (SvTYPE (rv))
		859	{
		860	case SVt_PVIO:
		861	case SVt_PVLV:
		862	case SVt_PVGV:
		863	req->type = type_fh;
		864	req->sv1 = newSVsv (fh_or_path);
		865	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		866	break;
		867
		868	default:
		869	req->type = type_path;
		870	req_set_path1 (req, fh_or_path);
		871	break;
		872	}
		873
		874	}
		875
1321	MODULE = IO::AIO PACKAGE = IO::AIO	876	MODULE = IO::AIO PACKAGE = IO::AIO
1322		877
1323	PROTOTYPES: ENABLE	878	PROTOTYPES: ENABLE
1324		879
1325	BOOT:	880	BOOT:
1326	{	881	{
		882	static const struct {
		883	const char *name;
		884	IV iv;
		885	} *civ, const_iv[] = {
		886	# define const_niv(name, value) { # name, (IV) value },
		887	# define const_iv(name) { # name, (IV) name },
		888	# define const_eio(name) { # name, (IV) EIO_ ## name },
		889	const_iv (EXDEV)
		890	const_iv (ENOSYS)
		891	const_iv (O_RDONLY)
		892	const_iv (O_WRONLY)
		893	const_iv (O_RDWR)
		894	const_iv (O_CREAT)
		895	const_iv (O_TRUNC)
		896	const_iv (O_EXCL)
		897	const_iv (O_APPEND)
		898
		899	const_iv (O_ASYNC)
		900	const_iv (O_DIRECT)
		901	const_iv (O_NOATIME)
		902
		903	const_iv (O_CLOEXEC)
		904	const_iv (O_NOCTTY)
		905	const_iv (O_NOFOLLOW)
		906	const_iv (O_NONBLOCK)
		907	const_iv (O_EXEC)
		908	const_iv (O_SEARCH)
		909	const_iv (O_DIRECTORY)
		910	const_iv (O_DSYNC)
		911	const_iv (O_RSYNC)
		912	const_iv (O_SYNC)
		913	const_iv (O_TTY_INIT)
		914
		915	const_iv (S_IFIFO)
		916	const_iv (S_IFCHR)
		917	const_iv (S_IFBLK)
		918	const_iv (S_IFLNK)
		919	const_iv (S_IFREG)
		920	const_iv (S_IFDIR)
		921	const_iv (S_IFWHT)
		922	const_iv (S_IFSOCK)
		923	const_iv (S_IFMT)
		924
		925	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		926	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		927	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		928	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		929	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		930	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		931
		932	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		933	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		934	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		935	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		936	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		937
		938	const_iv (ST_RDONLY)
		939	const_iv (ST_NOSUID)
		940	const_iv (ST_NODEV)
		941	const_iv (ST_NOEXEC)
		942	const_iv (ST_SYNCHRONOUS)
		943	const_iv (ST_MANDLOCK)
		944	const_iv (ST_WRITE)
		945	const_iv (ST_APPEND)
		946	const_iv (ST_IMMUTABLE)
		947	const_iv (ST_NOATIME)
		948	const_iv (ST_NODIRATIME)
		949	const_iv (ST_RELATIME)
		950
		951	const_iv (PROT_NONE)
		952	const_iv (PROT_EXEC)
		953	const_iv (PROT_READ)
		954	const_iv (PROT_WRITE)
		955
		956	/*const_iv (MAP_FIXED)*/
		957	const_iv (MAP_PRIVATE)
		958	const_iv (MAP_SHARED)
		959	const_iv (MAP_ANONYMOUS)
		960
		961	/* linuxish */
		962	const_iv (MAP_HUGETLB)
		963	const_iv (MAP_LOCKED)
		964	const_iv (MAP_NORESERVE)
		965	const_iv (MAP_POPULATE)
		966	const_iv (MAP_NONBLOCK)
		967
		968	const_eio (MCL_FUTURE)
		969	const_eio (MCL_CURRENT)
		970
		971	const_eio (MS_ASYNC)
		972	const_eio (MS_INVALIDATE)
		973	const_eio (MS_SYNC)
		974
		975	const_eio (MT_MODIFY)
		976
		977	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		978	const_eio (SYNC_FILE_RANGE_WRITE)
		979	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		980
		981	const_eio (FALLOC_FL_KEEP_SIZE)
		982
		983	const_eio (READDIR_DENTS)
		984	const_eio (READDIR_DIRS_FIRST)
		985	const_eio (READDIR_STAT_ORDER)
		986	const_eio (READDIR_FOUND_UNKNOWN)
		987
		988	const_eio (DT_UNKNOWN)
		989	const_eio (DT_FIFO)
		990	const_eio (DT_CHR)
		991	const_eio (DT_DIR)
		992	const_eio (DT_BLK)
		993	const_eio (DT_REG)
		994	const_eio (DT_LNK)
		995	const_eio (DT_SOCK)
		996	const_eio (DT_WHT)
		997	};
		998
1327	HV *stash = gv_stashpv ("IO::AIO", 1);	999	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1000	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1001	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1002	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1328		1003
1329	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1004	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1330	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1005	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1331	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1332	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1333	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1334	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1335	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1336		1006
1337	create_pipe ();	1007	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1338	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1339	}
1340		1008
		1009	reinit ();
		1010	}
		1011
1341	void	1012	void
		1013	reinit ()
		1014	PROTOTYPE:
		1015
		1016	void
1342	max_poll_reqs (int nreqs)	1017	max_poll_reqs (unsigned int nreqs)
1343	PROTOTYPE: $	1018	PROTOTYPE: $
1344	CODE:	1019	CODE:
1345	max_poll_reqs = nreqs;	1020	eio_set_max_poll_reqs (nreqs);
1346		1021
1347	void	1022	void
1348	max_poll_time (double nseconds)	1023	max_poll_time (double nseconds)
1349	PROTOTYPE: $	1024	PROTOTYPE: $
1350	CODE:	1025	CODE:
1351	max_poll_time = nseconds * AIO_TICKS;	1026	eio_set_max_poll_time (nseconds);
1352		1027
1353	void	1028	void
1354	min_parallel (int nthreads)	1029	min_parallel (unsigned int nthreads)
1355	PROTOTYPE: $
1356
1357	void
1358	max_parallel (int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_idle (int nthreads)
1363	PROTOTYPE: $	1030	PROTOTYPE: $
1364	CODE:	1031	CODE:
1365	set_max_idle (nthreads);	1032	eio_set_min_parallel (nthreads);
1366		1033
1367	int	1034	void
1368	max_outstanding (int maxreqs)	1035	max_parallel (unsigned int nthreads)
1369	PROTOTYPE: $	1036	PROTOTYPE: $
1370	CODE:	1037	CODE:
1371	RETVAL = max_outstanding;	1038	eio_set_max_parallel (nthreads);
		1039
		1040	void
		1041	max_idle (unsigned int nthreads)
		1042	PROTOTYPE: $
		1043	CODE:
		1044	eio_set_max_idle (nthreads);
		1045
		1046	void
		1047	idle_timeout (unsigned int seconds)
		1048	PROTOTYPE: $
		1049	CODE:
		1050	eio_set_idle_timeout (seconds);
		1051
		1052	void
		1053	max_outstanding (unsigned int maxreqs)
		1054	PROTOTYPE: $
		1055	CODE:
1372	max_outstanding = maxreqs;	1056	max_outstanding = maxreqs;
1373	OUTPUT:
1374	RETVAL
1375		1057
1376	void	1058	void
1377	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1059	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1378	SV8 * pathname
1379	int flags
1380	int mode
1381	SV * callback
1382	PROTOTYPE: $$$;$
1383	PPCODE:	1060	PPCODE:
1384	{	1061	{
1385	dREQ;	1062	dREQ;
1386		1063
		1064	req->type = EIO_WD_OPEN;
		1065	req_set_path1 (req, pathname);
		1066
		1067	REQ_SEND;
		1068	}
		1069
		1070	void
		1071	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1072	PPCODE:
		1073	{
		1074	dREQ;
		1075
1387	req->type = REQ_OPEN;	1076	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	1077	req_set_path1 (req, pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	1078	req->int1 = flags;
1391	req->mode = mode;	1079	req->int2 = mode;
1392		1080
1393	REQ_SEND;	1081	REQ_SEND;
1394	}	1082	}
1395		1083
1396	void	1084	void
1397	aio_close (fh,callback=&PL_sv_undef)	1085	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	SV * fh
1399	SV * callback
1400	PROTOTYPE: $;$
1401	ALIAS:	1086	ALIAS:
1402	aio_close = REQ_CLOSE
1403	aio_fsync = REQ_FSYNC	1087	aio_fsync = EIO_FSYNC
1404	aio_fdatasync = REQ_FDATASYNC	1088	aio_fdatasync = EIO_FDATASYNC
		1089	aio_syncfs = EIO_SYNCFS
1405	PPCODE:	1090	PPCODE:
1406	{	1091	{
		1092	int fd = s_fileno_croak (fh, 0);
1407	dREQ;	1093	dREQ;
1408		1094
1409	req->type = ix;	1095	req->type = ix;
1410	req->fh = newSVsv (fh);	1096	req->sv1 = newSVsv (fh);
1411	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1097	req->int1 = fd;
1412		1098
1413	REQ_SEND (req);	1099	REQ_SEND (req);
1414	}	1100	}
1415		1101
1416	void	1102	void
		1103	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	int fd = s_fileno_croak (fh, 0);
		1107	dREQ;
		1108
		1109	req->type = EIO_SYNC_FILE_RANGE;
		1110	req->sv1 = newSVsv (fh);
		1111	req->int1 = fd;
		1112	req->offs = offset;
		1113	req->size = nbytes;
		1114	req->int2 = flags;
		1115
		1116	REQ_SEND (req);
		1117	}
		1118
		1119	void
		1120	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1121	PPCODE:
		1122	{
		1123	int fd = s_fileno_croak (fh, 0);
		1124	dREQ;
		1125
		1126	req->type = EIO_FALLOCATE;
		1127	req->sv1 = newSVsv (fh);
		1128	req->int1 = fd;
		1129	req->int2 = mode;
		1130	req->offs = offset;
		1131	req->size = len;
		1132
		1133	REQ_SEND (req);
		1134	}
		1135
		1136	void
		1137	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1138	PPCODE:
		1139	{
		1140	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1141	int fd = s_fileno_croak (fh, 0);
		1142	dREQ;
		1143
		1144	if (expect_false (close_fd < 0))
		1145	{
		1146	int pipefd [2];
		1147
		1148	if (
		1149	#ifdef _WIN32
		1150	_pipe (pipefd, 1, _O_BINARY) < 0
		1151	#else
		1152	pipe (pipefd) < 0
		1153	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1154	#endif
		1155	|| close (pipefd [1]) < 0
		1156	)
		1157	abort (); /*D*/
		1158
		1159	close_fd = pipefd [0];
		1160	}
		1161
		1162	req->type = EIO_DUP2;
		1163	req->int1 = close_fd;
		1164	req->sv2 = newSVsv (fh);
		1165	req->int2 = fd;
		1166
		1167	REQ_SEND (req);
		1168	}
		1169
		1170	void
1417	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1171	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1418	SV * fh
1419	UV offset
1420	UV length
1421	SV8 * data
1422	UV dataoffset
1423	SV * callback
1424	ALIAS:	1172	ALIAS:
1425	aio_read = REQ_READ	1173	aio_read = EIO_READ
1426	aio_write = REQ_WRITE	1174	aio_write = EIO_WRITE
1427	PROTOTYPE: $$$$$;$
1428	PPCODE:	1175	PPCODE:
1429	{	1176	{
1430	STRLEN svlen;	1177	STRLEN svlen;
		1178	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1431	char *svptr = SvPVbyte (data, svlen);	1179	char *svptr = SvPVbyte (data, svlen);
1432		1180	UV len = SvUV (length);
1433	SvUPGRADE (data, SVt_PV);
1434	SvPOK_on (data);
1435		1181
1436	if (dataoffset < 0)	1182	if (dataoffset < 0)
1437	dataoffset += svlen;	1183	dataoffset += svlen;
1438		1184
1439	if (dataoffset < 0 || dataoffset > svlen)	1185	if (dataoffset < 0 || dataoffset > svlen)
1440	croak ("data offset outside of string");	1186	croak ("dataoffset outside of data scalar");
1441		1187
1442	if (ix == REQ_WRITE)	1188	if (ix == EIO_WRITE)
1443	{	1189	{
1444	/* write: check length and adjust. */	1190	/* write: check length and adjust. */
1445	if (length < 0 || length + dataoffset > svlen)	1191	if (!SvOK (length) || len + dataoffset > svlen)
1446	length = svlen - dataoffset;	1192	len = svlen - dataoffset;
1447	}	1193	}
1448	else	1194	else
1449	{	1195	{
1450	/* read: grow scalar as necessary */	1196	/* read: check type and grow scalar as necessary */
		1197	SvUPGRADE (data, SVt_PV);
1451	svptr = SvGROW (data, length + dataoffset);	1198	svptr = SvGROW (data, len + dataoffset + 1);
1452	}	1199	}
1453
1454	if (length < 0)
1455	croak ("length must not be negative");
1456		1200
1457	{	1201	{
1458	dREQ;	1202	dREQ;
1459		1203
1460	req->type = ix;	1204	req->type = ix;
1461	req->fh = newSVsv (fh);	1205	req->sv1 = newSVsv (fh);
1462	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1206	req->int1 = fd;
1463	: IoOFP (sv_2io (fh)));	1207	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1464	req->offs = offset;
1465	req->size = length;	1208	req->size = len;
1466	req->sv1 = SvREFCNT_inc (data);	1209	req->sv2 = SvREFCNT_inc (data);
1467	req->ptr1 = (char *)svptr + dataoffset;	1210	req->ptr2 = (char *)svptr + dataoffset;
1468	req->stroffset = dataoffset;	1211	req->stroffset = dataoffset;
1469		1212
1470	if (!SvREADONLY (data))	1213	if (!SvREADONLY (data))
1471	{	1214	{
1472	SvREADONLY_on (data);	1215	SvREADONLY_on (data);
1473	req->flags |= FLAG_SV1_RO_OFF;	1216	req->flags |= FLAG_SV2_RO_OFF;
1474	}	1217	}
1475		1218
1476	REQ_SEND;	1219	REQ_SEND;
1477	}	1220	}
1478	}	1221	}
1479		1222
1480	void	1223	void
1481	aio_readlink (path,callback=&PL_sv_undef)	1224	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1482	SV8 * path	1225	ALIAS:
1483	SV * callback	1226	aio_readlink = EIO_READLINK
1484	PROTOTYPE: $$;$	1227	aio_realpath = EIO_REALPATH
1485	PPCODE:	1228	PPCODE:
1486	{	1229	{
1487	SV *data;
1488	dREQ;	1230	dREQ;
1489		1231
1490	data = newSV (NAME_MAX);
1491	SvPOK_on (data);
1492
1493	req->type = REQ_READLINK;	1232	req->type = ix;
1494	req->fh = newSVsv (path);	1233	req_set_path1 (req, pathname);
1495	req->ptr2 = SvPVbyte_nolen (req->fh);
1496	req->sv1 = data;
1497	req->ptr1 = SvPVbyte_nolen (data);
1498		1234
1499	REQ_SEND;	1235	REQ_SEND;
1500	}	1236	}
1501		1237
1502	void	1238	void
1503	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1239	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1504	SV * out_fh
1505	SV * in_fh
1506	UV in_offset
1507	UV length
1508	SV * callback
1509	PROTOTYPE: $$$$;$
1510	PPCODE:	1240	PPCODE:
1511	{	1241	{
		1242	int ifd = s_fileno_croak (in_fh , 0);
		1243	int ofd = s_fileno_croak (out_fh, 1);
1512	dREQ;	1244	dREQ;
1513		1245
1514	req->type = REQ_SENDFILE;	1246	req->type = EIO_SENDFILE;
1515	req->fh = newSVsv (out_fh);	1247	req->sv1 = newSVsv (out_fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1248	req->int1 = ofd;
1517	req->sv2 = newSVsv (in_fh);	1249	req->sv2 = newSVsv (in_fh);
1518	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1250	req->int2 = ifd;
1519	req->offs = in_offset;	1251	req->offs = in_offset;
1520	req->size = length;	1252	req->size = length;
1521		1253
1522	REQ_SEND;	1254	REQ_SEND;
1523	}	1255	}
1524		1256
1525	void	1257	void
1526	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1258	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1527	SV * fh
1528	UV offset
1529	IV length
1530	SV * callback
1531	PROTOTYPE: $$$;$
1532	PPCODE:	1259	PPCODE:
1533	{	1260	{
		1261	int fd = s_fileno_croak (fh, 0);
1534	dREQ;	1262	dREQ;
1535		1263
1536	req->type = REQ_READAHEAD;	1264	req->type = EIO_READAHEAD;
1537	req->fh = newSVsv (fh);	1265	req->sv1 = newSVsv (fh);
1538	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1266	req->int1 = fd;
1539	req->offs = offset;	1267	req->offs = offset;
1540	req->size = length;	1268	req->size = length;
1541		1269
1542	REQ_SEND;	1270	REQ_SEND;
1543	}	1271	}
1544		1272
1545	void	1273	void
1546	aio_stat (fh_or_path,callback=&PL_sv_undef)	1274	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1547	SV8 * fh_or_path
1548	SV * callback
1549	ALIAS:	1275	ALIAS:
1550	aio_stat = REQ_STAT	1276	aio_stat = EIO_STAT
1551	aio_lstat = REQ_LSTAT	1277	aio_lstat = EIO_LSTAT
		1278	aio_statvfs = EIO_STATVFS
1552	PPCODE:	1279	PPCODE:
1553	{	1280	{
1554	dREQ;	1281	dREQ;
1555		1282
1556	req->ptr2 = malloc (sizeof (Stat_t));
1557	if (!req->ptr2)
1558	{
1559	req_free (req);
1560	croak ("out of memory during aio_stat statdata allocation");
1561	}
1562
1563	req->flags |= FLAG_PTR2_FREE;
1564
1565	if (SvPOK (fh_or_path))
1566	{
1567	req->type = ix;
1568	req->sv1 = newSVsv (fh_or_path);	1283	req->sv1 = newSVsv (fh_or_path);
1569	req->ptr1 = SvPVbyte_nolen (req->sv1);	1284	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1570	}
1571	else
1572	{
1573	req->type = REQ_FSTAT;
1574	req->fh = newSVsv (fh_or_path);
1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1576	}
1577
1578	REQ_SEND;	1285	REQ_SEND;
1579	}	1286	}
1580		1287
		1288	UV
		1289	major (UV dev)
		1290	ALIAS:
		1291	minor = 1
		1292	CODE:
		1293	RETVAL = ix ? major (dev) : minor (dev);
		1294	OUTPUT:
		1295	RETVAL
		1296
		1297	UV
		1298	makedev (UV maj, UV min)
		1299	CODE:
		1300	RETVAL = makedev (maj, min);
		1301	OUTPUT:
		1302	RETVAL
		1303
1581	void	1304	void
		1305	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1306	PPCODE:
		1307	{
		1308	dREQ;
		1309
		1310	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1311	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1312	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1313
		1314	REQ_SEND;
		1315	}
		1316
		1317	void
		1318	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1319	PPCODE:
		1320	{
		1321	dREQ;
		1322
		1323	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1324	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1325
		1326	REQ_SEND;
		1327	}
		1328
		1329	void
		1330	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1331	ALIAS:
		1332	aio_chmod = EIO_CHMOD
		1333	aio_mkdir = EIO_MKDIR
		1334	PPCODE:
		1335	{
		1336	dREQ;
		1337
		1338	req->int2 = mode;
		1339	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1340
		1341	REQ_SEND;
		1342	}
		1343
		1344	void
		1345	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1346	PPCODE:
		1347	{
		1348	dREQ;
		1349
		1350	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1351	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1352	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1353
		1354	REQ_SEND;
		1355	}
		1356
		1357	void
		1358	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1359	PPCODE:
		1360	{
		1361	dREQ;
		1362
		1363	req->type = EIO_READDIR;
		1364	req->sv1 = newSVsv (pathname);
		1365	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1366	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1367
		1368	if (flags & EIO_READDIR_DENTS)
		1369	req->int1 |= EIO_READDIR_CUSTOM2;
		1370
		1371	REQ_SEND;
		1372	}
		1373
		1374	void
1582	aio_unlink (pathname,callback=&PL_sv_undef)	1375	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1583	SV8 * pathname
1584	SV * callback
1585	ALIAS:	1376	ALIAS:
1586	aio_unlink = REQ_UNLINK	1377	aio_unlink = EIO_UNLINK
1587	aio_rmdir = REQ_RMDIR	1378	aio_rmdir = EIO_RMDIR
1588	aio_readdir = REQ_READDIR	1379	aio_readdir = EIO_READDIR
1589	PPCODE:	1380	PPCODE:
1590	{	1381	{
1591	dREQ;	1382	dREQ;
1592		1383
1593	req->type = ix;	1384	req->type = ix;
1594	req->sv1 = newSVsv (pathname);	1385	req_set_path1 (req, pathname);
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596		1386
1597	REQ_SEND;	1387	REQ_SEND;
1598	}	1388	}
1599		1389
1600	void	1390	void
1601	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1391	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1602	SV8 * oldpath
1603	SV8 * newpath
1604	SV * callback
1605	ALIAS:	1392	ALIAS:
1606	aio_link = REQ_LINK	1393	aio_link = EIO_LINK
1607	aio_symlink = REQ_SYMLINK	1394	aio_symlink = EIO_SYMLINK
1608	aio_rename = REQ_RENAME	1395	aio_rename = EIO_RENAME
		1396	PPCODE:
		1397	{
		1398	dREQ;
		1399	eio_wd wd2;
		1400
		1401	req->type = ix;
		1402	req_set_path1 (req, oldpath);
		1403	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1404	req->int3 = (long)wd2;
		1405
		1406	REQ_SEND;
		1407	}
		1408
		1409	void
		1410	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1609	PPCODE:	1411	PPCODE:
1610	{	1412	{
1611	dREQ;	1413	dREQ;
1612		1414
1613	req->type = ix;	1415	req->type = EIO_MKNOD;
1614	req->fh = newSVsv (oldpath);	1416	req->int2 = (mode_t)mode;
1615	req->ptr2 = SvPVbyte_nolen (req->fh);	1417	req->offs = dev;
1616	req->sv1 = newSVsv (newpath);	1418	req_set_path1 (req, pathname);
1617	req->ptr1 = SvPVbyte_nolen (req->sv1);
1618		1419
1619	REQ_SEND;	1420	REQ_SEND;
1620	}	1421	}
1621		1422
1622	void	1423	void
1623	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1424	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1624	SV8 * pathname	1425	ALIAS:
1625	SV * callback	1426	aio_mtouch = EIO_MTOUCH
1626	UV mode	1427	aio_msync = EIO_MSYNC
1627	UV dev	1428	PPCODE:
		1429	{
		1430	STRLEN svlen;
		1431	char *svptr = SvPVbyte (data, svlen);
		1432	UV len = SvUV (length);
		1433
		1434	if (offset < 0)
		1435	offset += svlen;
		1436
		1437	if (offset < 0 || offset > svlen)
		1438	croak ("offset outside of scalar");
		1439
		1440	if (!SvOK (length) || len + offset > svlen)
		1441	len = svlen - offset;
		1442
		1443	{
		1444	dREQ;
		1445
		1446	req->type = ix;
		1447	req->sv2 = SvREFCNT_inc (data);
		1448	req->ptr2 = (char *)svptr + offset;
		1449	req->size = len;
		1450	req->int1 = flags;
		1451
		1452	REQ_SEND;
		1453	}
		1454	}
		1455
		1456	void
		1457	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1458	PPCODE:
		1459	{
		1460	STRLEN svlen;
		1461	char *svptr = SvPVbyte (data, svlen);
		1462	UV len = SvUV (length);
		1463
		1464	if (offset < 0)
		1465	offset += svlen;
		1466
		1467	if (offset < 0 || offset > svlen)
		1468	croak ("offset outside of scalar");
		1469
		1470	if (!SvOK (length) || len + offset > svlen)
		1471	len = svlen - offset;
		1472
		1473	{
		1474	dREQ;
		1475
		1476	req->type = EIO_MLOCK;
		1477	req->sv2 = SvREFCNT_inc (data);
		1478	req->ptr2 = (char *)svptr + offset;
		1479	req->size = len;
		1480
		1481	REQ_SEND;
		1482	}
		1483	}
		1484
		1485	void
		1486	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1487	PPCODE:
		1488	{
		1489	dREQ;
		1490
		1491	req->type = EIO_MLOCKALL;
		1492	req->int1 = flags;
		1493
		1494	REQ_SEND;
		1495	}
		1496
		1497	void
		1498	aio_busy (double delay, SV *callback=&PL_sv_undef)
1628	PPCODE:	1499	PPCODE:
1629	{	1500	{
1630	dREQ;	1501	dREQ;
1631		1502
1632	req->type = REQ_MKNOD;	1503	req->type = EIO_BUSY;
1633	req->sv1 = newSVsv (pathname);	1504	req->nv1 = delay < 0. ? 0. : delay;
1634	req->ptr1 = SvPVbyte_nolen (req->sv1);	1505
1635	req->mode = (mode_t)mode;
1636	req->offs = dev;
1637
1638	REQ_SEND;	1506	REQ_SEND;
1639	}	1507	}
1640		1508
1641	void	1509	void
1642	aio_busy (delay,callback=&PL_sv_undef)	1510	aio_group (SV *callback=&PL_sv_undef)
1643	double delay	1511	PPCODE:
1644	SV * callback	1512	{
		1513	dREQ;
		1514
		1515	req->type = EIO_GROUP;
		1516
		1517	req_submit (req);
		1518	XPUSHs (req_sv (req, aio_grp_stash));
		1519	}
		1520
		1521	void
		1522	aio_nop (SV *callback=&PL_sv_undef)
		1523	ALIAS:
		1524	aio_nop = EIO_NOP
		1525	aio_sync = EIO_SYNC
1645	PPCODE:	1526	PPCODE:
1646	{	1527	{
1647	dREQ;	1528	dREQ;
1648		1529
1649	req->type = REQ_BUSY;
1650	req->int1 = delay < 0. ? 0 : delay;
1651	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1652
1653	REQ_SEND;
1654	}
1655
1656	void
1657	aio_group (callback=&PL_sv_undef)
1658	SV * callback
1659	PROTOTYPE: ;$
1660	PPCODE:
1661	{
1662	dREQ;
1663
1664	req->type = REQ_GROUP;
1665
1666	req_send (req);
1667	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1668	}
1669
1670	void
1671	aio_nop (callback=&PL_sv_undef)
1672	SV * callback
1673	PPCODE:
1674	{
1675	dREQ;
1676
1677	req->type = REQ_NOP;	1530	req->type = ix;
1678		1531
1679	REQ_SEND;	1532	REQ_SEND;
1680	}	1533	}
1681		1534
1682	int	1535	int
1683	aioreq_pri (int pri = 0)	1536	aioreq_pri (int pri = 0)
1684	PROTOTYPE: ;$
1685	CODE:	1537	CODE:
1686	RETVAL = next_pri - PRI_BIAS;	1538	RETVAL = next_pri;
1687	if (items > 0)	1539	if (items > 0)
1688	{	1540	{
1689	if (pri < PRI_MIN) pri = PRI_MIN;	1541	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1690	if (pri > PRI_MAX) pri = PRI_MAX;	1542	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1691	next_pri = pri + PRI_BIAS;	1543	next_pri = pri;
1692	}	1544	}
1693	OUTPUT:	1545	OUTPUT:
1694	RETVAL	1546	RETVAL
1695		1547
1696	void	1548	void
1697	aioreq_nice (int nice = 0)	1549	aioreq_nice (int nice = 0)
1698	CODE:	1550	CODE:
1699	nice = next_pri - nice;	1551	nice = next_pri - nice;
1700	if (nice < PRI_MIN) nice = PRI_MIN;	1552	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1701	if (nice > PRI_MAX) nice = PRI_MAX;	1553	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1702	next_pri = nice + PRI_BIAS;	1554	next_pri = nice;
1703		1555
1704	void	1556	void
1705	flush ()	1557	flush ()
1706	PROTOTYPE:
1707	CODE:	1558	CODE:
1708	while (nreqs)	1559	while (eio_nreqs ())
1709	{	1560	{
1710	poll_wait ();	1561	poll_wait ();
1711	poll_cb ();	1562	poll_cb ();
1712	}	1563	}
1713		1564
1714	int	1565	int
1715	poll()	1566	poll ()
1716	PROTOTYPE:
1717	CODE:	1567	CODE:
1718	poll_wait ();	1568	poll_wait ();
1719	RETVAL = poll_cb ();	1569	RETVAL = poll_cb ();
1720	OUTPUT:	1570	OUTPUT:
1721	RETVAL	1571	RETVAL
1722		1572
1723	int	1573	int
1724	poll_fileno()	1574	poll_fileno ()
1725	PROTOTYPE:
1726	CODE:	1575	CODE:
1727	RETVAL = respipe [0];	1576	RETVAL = s_epipe_fd (&respipe);
1728	OUTPUT:	1577	OUTPUT:
1729	RETVAL	1578	RETVAL
1730		1579
1731	int	1580	int
1732	poll_cb(...)	1581	poll_cb (...)
1733	PROTOTYPE:	1582	PROTOTYPE:
1734	CODE:	1583	CODE:
1735	RETVAL = poll_cb ();	1584	RETVAL = poll_cb ();
1736	OUTPUT:	1585	OUTPUT:
1737	RETVAL	1586	RETVAL
1738		1587
1739	void	1588	void
1740	poll_wait()	1589	poll_wait ()
1741	PROTOTYPE:
1742	CODE:	1590	CODE:
1743	poll_wait ();	1591	poll_wait ();
1744		1592
1745	void
1746	setsig (int signum = SIGIO)
1747	PROTOTYPE: ;$
1748	CODE:
1749	{
1750	if (block_sig_level)
1751	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1752
1753	LOCK (reslock);
1754	main_tid = pthread_self ();
1755	main_sig = signum;
1756	UNLOCK (reslock);
1757
1758	if (main_sig && npending)
1759	pthread_kill (main_tid, main_sig);
1760	}
1761
1762	void
1763	aio_block (SV *cb)
1764	PROTOTYPE: &
1765	PPCODE:
1766	{
1767	int count;
1768
1769	block_sig ();
1770	PUSHMARK (SP);
1771	PUTBACK;
1772	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1773	SPAGAIN;
1774	unblock_sig ();
1775
1776	if (SvTRUE (ERRSV))
1777	croak (0);
1778
1779	XSRETURN (count);
1780	}
1781
1782	int	1593	int
1783	nreqs()	1594	nreqs ()
1784	PROTOTYPE:
1785	CODE:	1595	CODE:
1786	RETVAL = nreqs;	1596	RETVAL = eio_nreqs ();
1787	OUTPUT:	1597	OUTPUT:
1788	RETVAL	1598	RETVAL
1789		1599
1790	int	1600	int
1791	nready()	1601	nready ()
1792	PROTOTYPE:
1793	CODE:	1602	CODE:
1794	RETVAL = get_nready ();	1603	RETVAL = eio_nready ();
1795	OUTPUT:	1604	OUTPUT:
1796	RETVAL	1605	RETVAL
1797		1606
1798	int	1607	int
1799	npending()	1608	npending ()
1800	PROTOTYPE:
1801	CODE:	1609	CODE:
1802	RETVAL = get_npending ();	1610	RETVAL = eio_npending ();
1803	OUTPUT:	1611	OUTPUT:
1804	RETVAL	1612	RETVAL
1805		1613
1806	int	1614	int
1807	nthreads()	1615	nthreads ()
1808	PROTOTYPE:
1809	CODE:	1616	CODE:
1810	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1617	RETVAL = eio_nthreads ();
1811	RETVAL = started;
1812	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1813	OUTPUT:	1618	OUTPUT:
1814	RETVAL	1619	RETVAL
1815		1620
		1621	int
		1622	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1623	CODE:
		1624	RETVAL = posix_fadvise (fh, offset, length, advice);
		1625	OUTPUT:
		1626	RETVAL
		1627
		1628	IV
		1629	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1630	CODE:
		1631	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1632	OUTPUT:
		1633	RETVAL
		1634
		1635	void
		1636	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1637	PPCODE:
		1638	sv_unmagic (scalar, MMAP_MAGIC);
		1639	{
		1640	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1641	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1642	if (addr == (void *)-1)
		1643	XSRETURN_NO;
		1644
		1645	sv_force_normal (scalar);
		1646
		1647	/* we store the length in mg_obj, as namlen is I32 :/ */
		1648	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1649	->mg_obj = (SV *)length;
		1650
		1651	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1652
		1653	if (!(prot & PROT_WRITE))
		1654	SvREADONLY_on (scalar);
		1655
		1656	if (SvLEN (scalar))
		1657	Safefree (SvPVX (scalar));
		1658
		1659	SvPVX (scalar) = (char *)addr;
		1660	SvCUR_set (scalar, length);
		1661	SvLEN_set (scalar, 0);
		1662	SvPOK_only (scalar);
		1663
		1664	XSRETURN_YES;
		1665	}
		1666
		1667	void
		1668	munmap (SV *scalar)
		1669	CODE:
		1670	sv_unmagic (scalar, MMAP_MAGIC);
		1671
		1672	int
		1673	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1674	ALIAS:
		1675	mprotect = 1
		1676	CODE:
		1677	{
		1678	STRLEN svlen;
		1679	void *addr = SvPVbyte (scalar, svlen);
		1680	size_t len = SvUV (length);
		1681
		1682	if (offset < 0)
		1683	offset += svlen;
		1684
		1685	if (offset < 0 || offset > svlen)
		1686	croak ("offset outside of scalar");
		1687
		1688	if (!SvOK (length) || len + offset > svlen)
		1689	len = svlen - offset;
		1690
		1691	addr = (void *)(((intptr_t)addr) + offset);
		1692	eio_page_align (&addr, &len);
		1693
		1694	switch (ix)
		1695	{
		1696	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1697	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1698	}
		1699	}
		1700	OUTPUT:
		1701	RETVAL
		1702
		1703	int
		1704	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1705	CODE:
		1706	{
		1707	STRLEN svlen;
		1708	void *addr = SvPVbyte (scalar, svlen);
		1709	size_t len = SvUV (length);
		1710
		1711	if (offset < 0)
		1712	offset += svlen;
		1713
		1714	if (offset < 0 || offset > svlen)
		1715	croak ("offset outside of scalar");
		1716
		1717	if (!SvOK (length) || len + offset > svlen)
		1718	len = svlen - offset;
		1719
		1720	addr = (void *)(((intptr_t)addr) + offset);
		1721	eio_page_align (&addr, &len);
		1722	#if _POSIX_MEMLOCK_RANGE
		1723	RETVAL = munlock (addr, len);
		1724	#else
		1725	RETVAL = ((errno = ENOSYS), -1);
		1726	#endif
		1727	}
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	int
		1732	munlockall ()
		1733	CODE:
		1734	#if _POSIX_MEMLOCK
		1735	munlockall ();
		1736	#else
		1737	RETVAL = -1;
		1738	errno = ENOSYS;
		1739	#endif
		1740	OUTPUT:
		1741	RETVAL
		1742
		1743	void _on_next_submit (SV *cb)
		1744	CODE:
		1745	SvREFCNT_dec (on_next_submit);
		1746	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1747
1816	PROTOTYPES: DISABLE	1748	PROTOTYPES: DISABLE
1817		1749
		1750	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1751
		1752	BOOT:
		1753	{
		1754	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1755	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1756	}
		1757
		1758	void
		1759	DESTROY (SV *self)
		1760	CODE:
		1761	{
		1762	aio_wd wd = SvAIO_WD (self);
		1763	#if HAVE_AT
		1764	SV *callback = &PL_sv_undef;
		1765	dREQ; /* clobbers next_pri :/ */
		1766	req->type = EIO_WD_CLOSE;
		1767	req->wd = wd;
		1768	REQ_SEND;
		1769	#else
		1770	eio_wd_close_sync (wd);
		1771	#endif
		1772	}
		1773
1818	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1774	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1819		1775
1820	void	1776	void
1821	cancel (aio_req_ornot req)	1777	cancel (aio_req_ornot req)
1822	CODE:	1778	CODE:
1823	req_cancel (req);	1779	eio_cancel (req);
1824		1780
1825	void	1781	void
1826	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1782	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1827	CODE:	1783	PPCODE:
		1784	{
		1785	if (GIMME_V != G_VOID)
		1786	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1787
		1788	if (items > 1)
		1789	{
		1790	SV *cb_cv =get_cb (callback);
		1791
1828	SvREFCNT_dec (req->callback);	1792	SvREFCNT_dec (req->callback);
1829	req->callback = newSVsv (callback);	1793	req->callback = SvREFCNT_inc (cb_cv);
		1794	}
		1795	}
1830		1796
1831	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1797	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1832		1798
1833	void	1799	void
1834	add (aio_req grp, ...)	1800	add (aio_req grp, ...)
1835	PPCODE:	1801	PPCODE:
1836	{	1802	{
1837	int i;	1803	int i;
1838	aio_req req;
1839
1840	if (main_sig && !block_sig_level)
1841	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1842		1804
1843	if (grp->int1 == 2)	1805	if (grp->int1 == 2)
1844	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1806	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1845		1807
1846	for (i = 1; i < items; ++i )	1808	for (i = 1; i < items; ++i )
1847	{	1809	{
		1810	aio_req req;
		1811
1848	if (GIMME_V != G_VOID)	1812	if (GIMME_V != G_VOID)
1849	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1813	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1850		1814
1851	req = SvAIO_REQ (ST (i));	1815	req = SvAIO_REQ (ST (i));
1852		1816
1853	if (req)	1817	if (req)
1854	{	1818	eio_grp_add (grp, req);
1855	++grp->size;
1856	req->grp = grp;
1857
1858	req->grp_prev = 0;
1859	req->grp_next = grp->grp_first;
1860
1861	if (grp->grp_first)
1862	grp->grp_first->grp_prev = req;
1863
1864	grp->grp_first = req;
1865	}
1866	}	1819	}
1867	}	1820	}
1868		1821
1869	void	1822	void
1870	cancel_subs (aio_req_ornot req)	1823	cancel_subs (aio_req_ornot req)
…		…
1879	AV *av;	1832	AV *av;
1880		1833
1881	grp->errorno = errno;	1834	grp->errorno = errno;
1882		1835
1883	av = newAV ();	1836	av = newAV ();
		1837	av_extend (av, items - 1);
1884		1838
1885	for (i = 1; i < items; ++i )	1839	for (i = 1; i < items; ++i )
1886	av_push (av, newSVsv (ST (i)));	1840	av_push (av, newSVsv (ST (i)));
1887		1841
1888	SvREFCNT_dec (grp->sv1);	1842	SvREFCNT_dec (grp->sv1);
…		…
1895	grp->errorno = errorno;	1849	grp->errorno = errorno;
1896		1850
1897	void	1851	void
1898	limit (aio_req grp, int limit)	1852	limit (aio_req grp, int limit)
1899	CODE:	1853	CODE:
1900	grp->int2 = limit;	1854	eio_grp_limit (grp, limit);
1901	aio_grp_feed (grp);
1902		1855
1903	void	1856	void
1904	feed (aio_req grp, SV *callback=&PL_sv_undef)	1857	feed (aio_req grp, SV *callback=&PL_sv_undef)
1905	CODE:	1858	CODE:
1906	{	1859	{
1907	SvREFCNT_dec (grp->sv2);	1860	SvREFCNT_dec (grp->sv2);
1908	grp->sv2 = newSVsv (callback);	1861	grp->sv2 = newSVsv (callback);
		1862	grp->feed = aio_grp_feed;
1909		1863
1910	if (grp->int2 <= 0)	1864	if (grp->int2 <= 0)
1911	grp->int2 = 2;	1865	grp->int2 = 2;
1912		1866
1913	aio_grp_feed (grp);	1867	eio_grp_limit (grp, grp->int2);
1914	}	1868	}
1915		1869

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