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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.87 by root, Mon Oct 30 23:42:27 2006 UTC vs.
Revision 1.206 by root, Tue Oct 4 18:22:37 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>	21	# include <sys/mman.h>
39	# 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
40	# include <sys/socket.h>	69	#include <sys/time.h>
41	# elif __solaris /* not yet */
42	# 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
43	# else	295	# else
44	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	297	# endif
46	#endif	298	#endif
47		299	#ifndef MAP_HUGETLB
48	/* number of seconds after which idle threads exit */	300	# define MAP_HUGETLB 0
49	#define IDLE_TIMEOUT 10
50
51	/* used for struct dirent, AIX doesn't provide it */
52	#ifndef NAME_MAX
53	# define NAME_MAX 4096
54	#endif
55
56	#ifndef PTHREAD_STACK_MIN
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
79	#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
80		314
81	/* buffer size for various temporary buffers */	315	#ifndef makedev
82	#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
83		324
84	#define dBUF \	325	#ifndef PAGESIZE
85	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
86	LOCK (wrklock); \	327	#endif
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91		328
92	enum {	329	enum {
93	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};	331	};
105		332
106	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"
108
109	typedef struct aio_cb
110	{
111	struct aio_cb *volatile next;
112
113	SV *callback, *fh;
114	SV *sv1, *sv2;
115	void *ptr1, *ptr2;
116	off_t offs;
117	size_t size;
118	ssize_t result;
119
120	STRLEN stroffset;
121	int type;
122	int int1, int2;
123	int errorno;
124	mode_t mode; /* open */
125
126	unsigned char flags;
127	unsigned char pri;
128
129	SV *self; /* the perl counterpart of this request, if any */
130	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
131	} aio_cb;
132
133	enum {
134	FLAG_CANCELLED = 0x01,
135	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
136	FLAG_PTR2_FREE = 0x80, /* need free(ptr2) */
137	};
138
139	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
140	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd aio_wd;
141		336
142	enum {	337	static SV *on_next_submit;
143	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
144	PRI_MAX = 4,	339	static int max_outstanding;
145		340
146	DEFAULT_PRI = 0,	341	static s_epipe respipe;
147	PRI_BIAS = -PRI_MIN,
148	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149	};
150		342
151	#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153	static unsigned int max_poll_time = 0;
154	static unsigned int max_poll_reqs = 0;
155
156	/* calculcate time difference in ~1/AIO_TICKS of a second */
157	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158	{
159	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
161	}
162
163	static int next_pri = DEFAULT_PRI + PRI_BIAS;
164
165	static unsigned int started, idle, wanted;
166
167	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169	#else
170	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171	#endif
172
173	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176	/* worker threads management */
177	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179	typedef struct worker {
180	/* locked by wrklock */
181	struct worker *prev, *next;
182
183	pthread_t tid;
184
185	/* locked by reslock, reqlock or wrklock */
186	aio_req req; /* currently processed request */
187	void *dbuf;
188	DIR *dirp;
189	} worker;
190
191	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193	static void worker_clear (worker *wrk)
194	{
195	if (wrk->dirp)
196	{
197	closedir (wrk->dirp);
198	wrk->dirp = 0;
199	}
200
201	if (wrk->dbuf)
202	{
203	free (wrk->dbuf);
204	wrk->dbuf = 0;
205	}
206	}
207
208	static void worker_free (worker *wrk)
209	{
210	wrk->next->prev = wrk->prev;
211	wrk->prev->next = wrk->next;
212
213	free (wrk);
214	}
215
216	static volatile unsigned int nreqs, nready, npending;
217	static volatile unsigned int max_idle = 4;
218	static volatile unsigned int max_outstanding = 0xffffffff;
219	static int respipe [2];
220
221	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225	#if WORDACCESS_UNSAFE
226
227	static unsigned int get_nready ()
228	{
229	unsigned int retval;
230
231	LOCK (reqlock);
232	retval = nready;
233	UNLOCK (reqlock);
234
235	return retval;
236	}
237
238	static unsigned int get_npending ()
239	{
240	unsigned int retval;
241
242	LOCK (reslock);
243	retval = npending;
244	UNLOCK (reslock);
245
246	return retval;
247	}
248
249	static unsigned int get_nthreads ()
250	{
251	unsigned int retval;
252
253	LOCK (wrklock);
254	retval = started;
255	UNLOCK (wrklock);
256
257	return retval;
258	}
259
260	#else
261
262	# define get_nready() nready
263	# define get_npending() npending
264	# define get_nthreads() started
265
266	#endif
267
268	/*
269	* a somewhat faster data structure might be nice, but
270	* with 8 priorities this actually needs <20 insns
271	* per shift, the most expensive operation.
272	*/
273	typedef struct {
274	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275	int size;
276	} reqq;
277
278	static reqq req_queue;
279	static reqq res_queue;
280
281	int reqq_push (reqq *q, aio_req req)
282	{
283	int pri = req->pri;
284	req->next = 0;
285
286	if (q->qe[pri])
287	{
288	q->qe[pri]->next = req;
289	q->qe[pri] = req;
290	}
291	else
292	q->qe[pri] = q->qs[pri] = req;
293
294	return q->size++;
295	}
296
297	aio_req reqq_shift (reqq *q)
298	{
299	int pri;
300
301	if (!q->size)
302	return 0;
303
304	--q->size;
305
306	for (pri = NUM_PRI; pri--; )
307	{
308	aio_req req = q->qs[pri];
309
310	if (req)
311	{
312	if (!(q->qs[pri] = req->next))
313	q->qe[pri] = 0;
314
315	return req;
316	}
317	}
318
319	abort ();
320	}
321
322	static int poll_cb ();
323	static void req_invoke (aio_req req);
324	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
325	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
326		345
		346	static void
		347	want_poll (void)
		348	{
		349	/* write a dummy byte to the pipe so fh becomes ready */
		350	s_epipe_signal (&respipe);
		351	}
		352
		353	static void
		354	done_poll (void)
		355	{
		356	/* read any signals sent by the worker threads */
		357	s_epipe_drain (&respipe);
		358	}
		359
327	/* must be called at most once */	360	/* must be called at most once */
328	static SV *req_sv (aio_req req, const char *klass)	361	static SV *
		362	req_sv (aio_req req, HV *stash)
329	{	363	{
330	if (!req->self)	364	if (!req->self)
331	{	365	{
332	req->self = (SV *)newHV ();	366	req->self = (SV *)newHV ();
333	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	367	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334	}	368	}
335		369
336	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	370	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337	}	371	}
338		372
339	static aio_req SvAIO_REQ (SV *sv)	373	static SV *
		374	newSVaio_wd (aio_wd wd)
		375	{
		376	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		377	}
		378
		379	static aio_req
		380	SvAIO_REQ (SV *sv)
340	{	381	{
341	MAGIC *mg;	382	MAGIC *mg;
342		383
343	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	384	if (!SvROK (sv)
		385	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		386	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		387	&& SvSTASH (SvRV (sv)) != aio_req_stash
		388	&& !sv_derived_from (sv, "IO::AIO::REQ")))
344	croak ("object of class " AIO_REQ_KLASS " expected");	389	croak ("object of class IO::AIO::REQ expected");
345		390
346	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	391	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347		392
348	return mg ? (aio_req)mg->mg_ptr : 0;	393	return mg ? (aio_req)mg->mg_ptr : 0;
349	}	394	}
350		395
		396	static aio_wd
		397	SvAIO_WD (SV *sv)
		398	{
		399	if (!SvROK (sv)
		400	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		401	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		402	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		403
		404	return (aio_wd)(long)SvIVX (SvRV (sv));
		405	}
		406
		407	static void
351	static void aio_grp_feed (aio_req grp)	408	aio_grp_feed (aio_req grp)
352	{	409	{
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	410	if (grp->sv2 && SvOK (grp->sv2))
354	{	411	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	412	dSP;
360		413
361	ENTER;	414	ENTER;
362	SAVETMPS;	415	SAVETMPS;
363	PUSHMARK (SP);	416	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	417	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	418	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	419	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	420	SPAGAIN;
368	FREETMPS;	421	FREETMPS;
369	LEAVE;	422	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	}	423	}
380	}	424	}
381		425
382	static void aio_grp_dec (aio_req grp)	426	static void
		427	req_submit (eio_req *req)
383	{	428	{
384	--grp->size;	429	eio_submit (req);
385		430
386	/* call feeder, if applicable */	431	if (expect_false (on_next_submit))
387	aio_grp_feed (grp);
388
389	/* finish, if done */
390	if (!grp->size && grp->int1)
391	{	432	{
392	req_invoke (grp);	433	dSP;
393	req_free (grp);	434	SV *cb = sv_2mortal (on_next_submit);
		435
		436	on_next_submit = 0;
		437
		438	PUSHMARK (SP);
		439	PUTBACK;
		440	call_sv (cb, G_DISCARD | G_EVAL);
394	}	441	}
395	}	442	}
396		443
		444	static int
397	static void req_invoke (aio_req req)	445	req_invoke (eio_req *req)
398	{	446	{
399	dSP;
400
401	if (req->flags & FLAG_SV1_RO_OFF)	447	if (req->flags & FLAG_SV2_RO_OFF)
402	SvREADONLY_off (req->sv1);	448	SvREADONLY_off (req->sv2);
403		449
404	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	450	if (!EIO_CANCELLED (req) && req->callback)
405	{	451	{
		452	dSP;
		453	static SV *sv_result_cache; /* caches the result integer SV */
		454	SV *sv_result;
		455
406	ENTER;	456	ENTER;
407	SAVETMPS;	457	SAVETMPS;
408	PUSHMARK (SP);	458	PUSHMARK (SP);
409	EXTEND (SP, 1);	459	EXTEND (SP, 1);
410		460
		461	/* do not recreate the result IV from scratch each time */
		462	if (expect_true (sv_result_cache))
		463	{
		464	sv_result = sv_result_cache; sv_result_cache = 0;
		465	SvIV_set (sv_result, req->result);
		466	SvIOK_only (sv_result);
		467	}
		468	else
		469	{
		470	sv_result = newSViv (req->result);
		471	SvREADONLY_on (sv_result);
		472	}
		473
411	switch (req->type)	474	switch (req->type)
412	{	475	{
		476	case EIO_WD_OPEN:
		477	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		478	break;
		479
413	case REQ_READDIR:	480	case EIO_READDIR:
414	{	481	{
415	SV *rv = &PL_sv_undef;	482	SV *rv = &PL_sv_undef;
416		483
417	if (req->result >= 0)	484	if (req->result >= 0)
418	{	485	{
419	int i;	486	int i;
420	char *buf = req->ptr2;	487	char *names = (char *)req->ptr2;
		488	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
421	AV *av = newAV ();	489	AV *av = newAV ();
422		490
423	av_extend (av, req->result - 1);	491	av_extend (av, req->result - 1);
424		492
425	for (i = 0; i < req->result; ++i)	493	for (i = 0; i < req->result; ++i)
426	{	494	{
427	SV *sv = newSVpv (buf, 0);	495	if (req->int1 & EIO_READDIR_DENTS)
		496	{
		497	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
428		498
		499	if (req->int1 & EIO_READDIR_CUSTOM2)
		500	{
		501	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		502	AV *avent = newAV ();
		503
		504	av_extend (avent, 2);
		505
		506	if (!sv_type [ent->type])
		507	{
		508	sv_type [ent->type] = newSViv (ent->type);
		509	SvREADONLY_on (sv_type [ent->type]);
		510	}
		511
		512	av_store (avent, 0, namesv);
		513	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		514	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		515
		516	av_store (av, i, newRV_noinc ((SV *)avent));
		517	}
		518	else
429	av_store (av, i, sv);	519	av_store (av, i, namesv);
		520
		521	++ent;
		522	}
		523	else
		524	{
		525	SV *name = newSVpv (names, 0);
		526	av_store (av, i, name);
430	buf += SvCUR (sv) + 1;	527	names += SvCUR (name) + 1;
		528	}
431	}	529	}
432		530
433	rv = sv_2mortal (newRV_noinc ((SV *)av));	531	rv = sv_2mortal (newRV_noinc ((SV *)av));
434	}	532	}
435		533
436	PUSHs (rv);	534	PUSHs (rv);
		535
		536	if (req->int1 & EIO_READDIR_CUSTOM1)
		537	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
437	}	538	}
438	break;	539	break;
439		540
440	case REQ_OPEN:	541	case EIO_OPEN:
441	{	542	{
442	/* convert fd to fh */	543	/* convert fd to fh */
443	SV *fh;	544	SV *fh = &PL_sv_undef;
444		545
445	PUSHs (sv_2mortal (newSViv (req->result)));	546	if (req->result >= 0)
446	PUTBACK;	547	{
447	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	548	GV *gv = (GV *)sv_newmortal ();
448	SPAGAIN;	549	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		550	char sym [64];
		551	int symlen;
		552
		553	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		554	gv_init (gv, aio_stash, sym, symlen, 0);
449		555
450	fh = SvREFCNT_inc (POPs);	556	symlen = snprintf (
		557	sym,
		558	sizeof (sym),
		559	"%s&=%d",
		560	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		561	(int)req->result
		562	);
451		563
		564	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		565	fh = (SV *)gv;
		566	}
		567
452	PUSHMARK (SP);	568	PUSHs (fh);
453	XPUSHs (sv_2mortal (fh));
454	}	569	}
455	break;	570	break;
456		571
		572	case EIO_STATVFS:
		573	case EIO_FSTATVFS:
		574	{
		575	SV *rv = &PL_sv_undef;
		576
		577	#ifndef _WIN32
		578	if (req->result >= 0)
		579	{
		580	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		581	HV *hv = newHV ();
		582
		583	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		584
		585	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		586	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		587	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		588	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		589	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		590	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		591	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		592	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		593	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		594	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		595	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		596	}
		597	#endif
		598
		599	PUSHs (rv);
		600	}
		601
		602	break;
		603
457	case REQ_GROUP:	604	case EIO_GROUP:
458	req->int1 = 2; /* mark group as finished */	605	req->int1 = 2; /* mark group as finished */
459		606
460	if (req->sv1)	607	if (req->sv1)
461	{	608	{
462	int i;	609	int i;
…		…
466	for (i = 0; i <= AvFILL (av); ++i)	613	for (i = 0; i <= AvFILL (av); ++i)
467	PUSHs (*av_fetch (av, i, 0));	614	PUSHs (*av_fetch (av, i, 0));
468	}	615	}
469	break;	616	break;
470		617
471	case REQ_NOP:	618	case EIO_NOP:
472	case REQ_BUSY:	619	case EIO_BUSY:
473	break;	620	break;
474		621
475	case REQ_READLINK:	622	case EIO_READLINK:
		623	case EIO_REALPATH:
476	if (req->result > 0)	624	if (req->result > 0)
477	{	625	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
478	SvCUR_set (req->sv1, req->result);
479	*SvEND (req->sv1) = 0;
480	PUSHs (req->sv1);
481	}
482	break;	626	break;
483		627
484	case REQ_STAT:	628	case EIO_STAT:
485	case REQ_LSTAT:	629	case EIO_LSTAT:
486	case REQ_FSTAT:	630	case EIO_FSTAT:
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	631	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		632
488	PL_laststatval = req->result;	633	if (!(PL_laststatval = req->result))
		634	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
489	PL_statcache = *(Stat_t *)(req->ptr2);	635	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
490	PUSHs (sv_2mortal (newSViv (req->result)));	636
		637	PUSHs (sv_result);
491	break;	638	break;
492		639
493	case REQ_READ:	640	case EIO_READ:
		641	{
494	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	642	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
495	*SvEND (req->sv1) = 0;	643	*SvEND (req->sv2) = 0;
496	PUSHs (sv_2mortal (newSViv (req->result)));	644	SvPOK_only (req->sv2);
		645	SvSETMAGIC (req->sv2);
		646	PUSHs (sv_result);
		647	}
497	break;	648	break;
498		649
		650	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		651	if (req->result > 0)
		652	SvIV_set (sv_result, 0);
		653	/* FALLTHROUGH */
		654
499	default:	655	default:
500	PUSHs (sv_2mortal (newSViv (req->result)));	656	PUSHs (sv_result);
501	break;	657	break;
502	}	658	}
503		659
504	errno = req->errorno;	660	errno = req->errorno;
505		661
506	PUTBACK;	662	PUTBACK;
507	call_sv (req->callback, G_VOID | G_EVAL);	663	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
508	SPAGAIN;	664	SPAGAIN;
		665
		666	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		667	SvREFCNT_dec (sv_result);
		668	else
		669	sv_result_cache = sv_result;
509		670
510	FREETMPS;	671	FREETMPS;
511	LEAVE;	672	LEAVE;
		673
		674	PUTBACK;
512	}	675	}
513		676
514	if (req->grp)	677	return !!SvTRUE (ERRSV);
515	{
516	aio_req grp = req->grp;
517
518	/* unlink request */
519	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
520	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
521
522	if (grp->grp_first == req)
523	grp->grp_first = req->grp_next;
524
525	aio_grp_dec (grp);
526	}
527
528	if (SvTRUE (ERRSV))
529	{
530	req_free (req);
531	croak (0);
532	}
533	}	678	}
534		679
535	static void req_free (aio_req req)	680	static void
		681	req_destroy (aio_req req)
536	{	682	{
537	if (req->self)	683	if (req->self)
538	{	684	{
539	sv_unmagic (req->self, PERL_MAGIC_ext);	685	sv_unmagic (req->self, PERL_MAGIC_ext);
540	SvREFCNT_dec (req->self);	686	SvREFCNT_dec (req->self);
541	}	687	}
542		688
543	SvREFCNT_dec (req->fh);
544	SvREFCNT_dec (req->sv1);	689	SvREFCNT_dec (req->sv1);
545	SvREFCNT_dec (req->sv2);	690	SvREFCNT_dec (req->sv2);
		691	SvREFCNT_dec (req->sv3);
		692	SvREFCNT_dec (req->sv4);
546	SvREFCNT_dec (req->callback);	693	SvREFCNT_dec (req->callback);
547		694
548	if (req->flags & FLAG_PTR2_FREE)
549	free (req->ptr2);
550
551	Safefree (req);	695	free (req);
552	}	696	}
553		697
		698	static void
554	static void req_cancel_subs (aio_req grp)	699	req_cancel_subs (aio_req grp)
555	{	700	{
556	aio_req sub;
557
558	if (grp->type != REQ_GROUP)	701	if (grp->type != EIO_GROUP)
559	return;	702	return;
560		703
561	SvREFCNT_dec (grp->sv2);	704	SvREFCNT_dec (grp->sv2);
562	grp->sv2 = 0;	705	grp->sv2 = 0;
563		706
564	for (sub = grp->grp_first; sub; sub = sub->grp_next)	707	eio_grp_cancel (grp);
565	req_cancel (sub);
566	}	708	}
567		709
568	static void req_cancel (aio_req req)	710	static void ecb_cold
		711	create_respipe (void)
569	{	712	{
570	req->flags |= FLAG_CANCELLED;	713	if (s_epipe_renew (&respipe))
571		714	croak ("IO::AIO: unable to initialize result pipe");
572	req_cancel_subs (req);
573	}	715	}
574		716
575	static void *aio_proc(void *arg);	717	static void
576		718	poll_wait (void)
577	static void start_thread (void)
578	{	719	{
579	sigset_t fullsigset, oldsigset;
580	pthread_attr_t attr;
581
582	worker *wrk = calloc (1, sizeof (worker));
583
584	if (!wrk)
585	croak ("unable to allocate worker thread data");
586
587	pthread_attr_init (&attr);
588	pthread_attr_setstacksize (&attr, STACKSIZE);
589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
590	#ifdef PTHREAD_SCOPE_PROCESS
591	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
592	#endif
593
594	sigfillset (&fullsigset);
595
596	LOCK (wrklock);
597	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
598
599	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
600	{
601	wrk->prev = &wrk_first;
602	wrk->next = wrk_first.next;
603	wrk_first.next->prev = wrk;
604	wrk_first.next = wrk;
605	++started;
606	}
607	else
608	free (wrk);
609
610	sigprocmask (SIG_SETMASK, &oldsigset, 0);
611	UNLOCK (wrklock);
612	}
613
614	static void maybe_start_thread ()
615	{
616	if (get_nthreads () >= wanted)
617	return;
618
619	/* todo: maybe use idle here, but might be less exact */
620	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
621	return;
622
623	start_thread ();
624	}
625
626	static void req_send (aio_req req)
627	{
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	pthread_cond_signal (&reqwait);
634	UNLOCK (reqlock);
635
636	maybe_start_thread ();
637	}
638
639	static void end_thread (void)
640	{
641	aio_req req;
642
643	Newz (0, req, 1, aio_cb);
644
645	req->type = REQ_QUIT;
646	req->pri = PRI_MAX + PRI_BIAS;
647
648	LOCK (reqlock);
649	reqq_push (&req_queue, req);
650	pthread_cond_signal (&reqwait);
651	UNLOCK (reqlock);
652
653	LOCK (wrklock);
654	--started;
655	UNLOCK (wrklock);
656	}
657
658	static void set_max_idle (int nthreads)
659	{
660	if (WORDACCESS_UNSAFE) LOCK (reqlock);
661	max_idle = nthreads <= 0 ? 1 : nthreads;
662	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
663	}
664
665	static void min_parallel (int nthreads)
666	{
667	if (wanted < nthreads)
668	wanted = nthreads;
669	}
670
671	static void max_parallel (int nthreads)
672	{
673	if (wanted > nthreads)
674	wanted = nthreads;
675
676	while (started > wanted)
677	end_thread ();
678	}
679
680	static void poll_wait ()
681	{
682	fd_set rfd;
683
684	while (nreqs)	720	while (eio_nreqs ())
685	{	721	{
686	int size;	722	int size;
687	if (WORDACCESS_UNSAFE) LOCK (reslock);	723
		724	X_LOCK (reslock);
688	size = res_queue.size;	725	size = res_queue.size;
689	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	726	X_UNLOCK (reslock);
690		727
691	if (size)	728	if (size)
692	return;	729	return;
693		730
694	maybe_start_thread ();	731	etp_maybe_start_thread ();
695		732
696	FD_ZERO(&rfd);	733	s_epipe_wait (&respipe);
697	FD_SET(respipe [0], &rfd);
698
699	select (respipe [0] + 1, &rfd, 0, 0, 0);
700	}	734	}
701	}	735	}
702		736
703	static int poll_cb ()	737	static int
		738	poll_cb (void)
704	{	739	{
705	dSP;
706	int count = 0;
707	int maxreqs = max_poll_reqs;
708	int do_croak = 0;
709	struct timeval tv_start, tv_now;
710	aio_req req;
711
712	if (max_poll_time)
713	gettimeofday (&tv_start, 0);
714
715	for (;;)	740	for (;;)
716	{	741	{
717	for (;;)	742	int res = eio_poll ();
		743
		744	if (res > 0)
		745	croak (0);
		746
		747	if (!max_outstanding || max_outstanding > eio_nreqs ())
		748	return res;
		749
		750	poll_wait ();
		751	}
		752	}
		753
		754	static void ecb_cold
		755	reinit (void)
		756	{
		757	create_respipe ();
		758
		759	if (eio_init (want_poll, done_poll) < 0)
		760	croak ("IO::AIO: unable to initialise eio library");
		761	}
		762
		763	/*****************************************************************************/
		764
		765	#if !_POSIX_MAPPED_FILES
		766	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		767	# define munmap(addr,length) (errno = ENOSYS, -1)
		768	#endif
		769
		770	#if !_POSIX_MEMORY_PROTECTION
		771	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		772	# define PROT_NONE 0
		773	# define PROT_WRITE 0
		774	# define MAP_PRIVATE 0
		775	# define MAP_SHARED 0
		776	# define MAP_FIXED 0
		777	#endif
		778
		779	#define MMAP_MAGIC PERL_MAGIC_ext
		780
		781	static int ecb_cold
		782	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		783	{
		784	int old_errno = errno;
		785	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		786	errno = old_errno;
		787
		788	mg->mg_obj = 0; /* just in case */
		789
		790	SvREADONLY_off (sv);
		791
		792	if (SvPVX (sv) != mg->mg_ptr)
		793	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		794
		795	SvCUR_set (sv, 0);
		796	SvPVX (sv) = 0;
		797	SvOK_off (sv);
		798
		799	return 0;
		800	}
		801
		802	static MGVTBL mmap_vtbl = {
		803	0, 0, 0, 0, mmap_free
		804	};
		805
		806	/*****************************************************************************/
		807
		808	static SV *
		809	get_cb (SV *cb_sv)
		810	{
		811	SvGETMAGIC (cb_sv);
		812	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		813	}
		814
		815	static aio_req ecb_noinline
		816	dreq (SV *callback)
		817	{
		818	SV *cb_cv;
		819	aio_req req;
		820	int req_pri = next_pri;
		821	next_pri = EIO_PRI_DEFAULT;
		822
		823	cb_cv = get_cb (callback);
		824
		825	req = calloc (sizeof (*req), 1);
		826	if (!req)
		827	croak ("out of memory during eio_req allocation");
		828
		829	req->callback = SvREFCNT_inc (cb_cv);
		830	req->pri = req_pri;
		831
		832	return req;
		833	}
		834
		835	#define dREQ \
		836	aio_req req = dreq (callback); \
		837
		838	#define REQ_SEND \
		839	PUTBACK; \
		840	req_submit (req); \
		841	SPAGAIN; \
		842	\
		843	if (GIMME_V != G_VOID) \
		844	XPUSHs (req_sv (req, aio_req_stash));
		845
		846	ecb_inline void
		847	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		848	{
		849	if (expect_false (SvROK (path)))
		850	{
		851	SV *rv = SvRV (path);
		852	SV *wdob;
		853
		854	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
718	{	855	{
719	maybe_start_thread ();	856	path = AvARRAY (rv)[1];
		857	wdob = AvARRAY (rv)[0];
720		858
721	LOCK (reslock);	859	if (SvOK (wdob))
722	req = reqq_shift (&res_queue);
723
724	if (req)
725	{	860	{
726	--npending;	861	*wd = SvAIO_WD (wdob);
727		862	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
728	if (!res_queue.size)
729	{
730	/* read any signals sent by the worker threads */
731	char buf [32];
732	while (read (respipe [0], buf, 32) == 32)
733	;
734	}
735	}
736
737	UNLOCK (reslock);
738
739	if (!req)
740	break;
741
742	--nreqs;
743
744	if (req->type == REQ_GROUP && req->size)
745	{
746	req->int1 = 1; /* mark request as delayed */
747	continue;
748	}	863	}
749	else	864	else
750	{	865	*wd = EIO_INVALID_WD;
751	req_invoke (req);
752
753	count++;
754	}
755
756	req_free (req);
757
758	if (maxreqs && !--maxreqs)
759	break;
760
761	if (max_poll_time)
762	{
763	gettimeofday (&tv_now, 0);
764
765	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
766	break;
767	}
768	}	866	}
		867	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		868	{
		869	*wd = (aio_wd)(long)SvIVX (rv);
		870	*wdsv = SvREFCNT_inc_NN (rv);
		871	*ptr = ".";
		872	return; /* path set to "." */
		873	}
		874	else
		875	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		876	}
769		877
770	if (nreqs <= max_outstanding)	878	*pathsv = newSVsv (path);
		879	*ptr = SvPVbyte_nolen (*pathsv);
		880	}
		881
		882	static void ecb_noinline
		883	req_set_path1 (aio_req req, SV *path)
		884	{
		885	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		886	}
		887
		888	static void ecb_noinline
		889	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		890	{
		891	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		892
		893	switch (SvTYPE (rv))
		894	{
		895	case SVt_PVIO:
		896	case SVt_PVLV:
		897	case SVt_PVGV:
		898	req->type = type_fh;
		899	req->sv1 = newSVsv (fh_or_path);
		900	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
771	break;	901	break;
772		902
773	poll_wait ();	903	default:
774		904	req->type = type_path;
775	++maxreqs;	905	req_set_path1 (req, fh_or_path);
		906	break;
776	}	907	}
777
778	return count;
779	}	908	}
780		909
781	static void create_pipe ()	910	XS(boot_IO__AIO) ecb_cold;
782	{
783	if (pipe (respipe))
784	croak ("unable to initialize result pipe");
785		911
786	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
787	croak ("cannot set result pipe to nonblocking mode");
788
789	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791	}
792
793	/*****************************************************************************/
794	/* work around various missing functions */
795
796	#if !HAVE_PREADWRITE
797	# define pread aio_pread
798	# define pwrite aio_pwrite
799
800	/*
801	* make our pread/pwrite safe against themselves, but not against
802	* normal read/write by using a mutex. slows down execution a lot,
803	* but that's your problem, not mine.
804	*/
805	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
806
807	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
808	{
809	ssize_t res;
810	off_t ooffset;
811
812	LOCK (preadwritelock);
813	ooffset = lseek (fd, 0, SEEK_CUR);
814	lseek (fd, offset, SEEK_SET);
815	res = read (fd, buf, count);
816	lseek (fd, ooffset, SEEK_SET);
817	UNLOCK (preadwritelock);
818
819	return res;
820	}
821
822	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
823	{
824	ssize_t res;
825	off_t ooffset;
826
827	LOCK (preadwritelock);
828	ooffset = lseek (fd, 0, SEEK_CUR);
829	lseek (fd, offset, SEEK_SET);
830	res = write (fd, buf, count);
831	lseek (fd, offset, SEEK_SET);
832	UNLOCK (preadwritelock);
833
834	return res;
835	}
836	#endif
837
838	#if !HAVE_FDATASYNC
839	# define fdatasync fsync
840	#endif
841
842	#if !HAVE_READAHEAD
843	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
844
845	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
846	{
847	dBUF;
848
849	while (count > 0)
850	{
851	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
852
853	pread (fd, aio_buf, len, offset);
854	offset += len;
855	count -= len;
856	}
857
858	errno = 0;
859	}
860
861	#endif
862
863	#if !HAVE_READDIR_R
864	# define readdir_r aio_readdir_r
865
866	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
867
868	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
869	{
870	struct dirent *e;
871	int errorno;
872
873	LOCK (readdirlock);
874
875	e = readdir (dirp);
876	errorno = errno;
877
878	if (e)
879	{
880	*res = ent;
881	strcpy (ent->d_name, e->d_name);
882	}
883	else
884	*res = 0;
885
886	UNLOCK (readdirlock);
887
888	errno = errorno;
889	return e ? 0 : -1;
890	}
891	#endif
892
893	/* sendfile always needs emulation */
894	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
895	{
896	ssize_t res;
897
898	if (!count)
899	return 0;
900
901	#if HAVE_SENDFILE
902	# if __linux
903	res = sendfile (ofd, ifd, &offset, count);
904
905	# elif __freebsd
906	/*
907	* Of course, the freebsd sendfile is a dire hack with no thoughts
908	* wasted on making it similar to other I/O functions.
909	*/
910	{
911	off_t sbytes;
912	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
913
914	if (res < 0 && sbytes)
915	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
916	res = sbytes;
917	}
918
919	# elif __hpux
920	res = sendfile (ofd, ifd, offset, count, 0, 0);
921
922	# elif __solaris
923	{
924	struct sendfilevec vec;
925	size_t sbytes;
926
927	vec.sfv_fd = ifd;
928	vec.sfv_flag = 0;
929	vec.sfv_off = offset;
930	vec.sfv_len = count;
931
932	res = sendfilev (ofd, &vec, 1, &sbytes);
933
934	if (res < 0 && sbytes)
935	res = sbytes;
936	}
937
938	# endif
939	#else
940	res = -1;
941	errno = ENOSYS;
942	#endif
943
944	if (res < 0
945	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
946	#if __solaris
947	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
948	#endif
949	)
950	)
951	{
952	/* emulate sendfile. this is a major pain in the ass */
953	dBUF;
954
955	res = 0;
956
957	while (count)
958	{
959	ssize_t cnt;
960
961	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
962
963	if (cnt <= 0)
964	{
965	if (cnt && !res) res = -1;
966	break;
967	}
968
969	cnt = write (ofd, aio_buf, cnt);
970
971	if (cnt <= 0)
972	{
973	if (cnt && !res) res = -1;
974	break;
975	}
976
977	offset += cnt;
978	res += cnt;
979	count -= cnt;
980	}
981	}
982
983	return res;
984	}
985
986	/* read a full directory */
987	static void scandir_ (aio_req req, worker *self)
988	{
989	DIR *dirp;
990	union
991	{
992	struct dirent d;
993	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
994	} *u;
995	struct dirent *entp;
996	char *name, *names;
997	int memlen = 4096;
998	int memofs = 0;
999	int res = 0;
1000	int errorno;
1001
1002	LOCK (wrklock);
1003	self->dirp = dirp = opendir (req->ptr1);
1004	self->dbuf = u = malloc (sizeof (*u));
1005	req->flags |= FLAG_PTR2_FREE;
1006	req->ptr2 = names = malloc (memlen);
1007	UNLOCK (wrklock);
1008
1009	if (dirp && u && names)
1010	for (;;)
1011	{
1012	errno = 0;
1013	readdir_r (dirp, &u->d, &entp);
1014
1015	if (!entp)
1016	break;
1017
1018	name = entp->d_name;
1019
1020	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1021	{
1022	int len = strlen (name) + 1;
1023
1024	res++;
1025
1026	while (memofs + len > memlen)
1027	{
1028	memlen *= 2;
1029	LOCK (wrklock);
1030	req->ptr2 = names = realloc (names, memlen);
1031	UNLOCK (wrklock);
1032
1033	if (!names)
1034	break;
1035	}
1036
1037	memcpy (names + memofs, name, len);
1038	memofs += len;
1039	}
1040	}
1041
1042	if (errno)
1043	res = -1;
1044
1045	req->result = res;
1046	}
1047
1048	/*****************************************************************************/
1049
1050	static void *aio_proc (void *thr_arg)
1051	{
1052	aio_req req;
1053	struct timespec ts;
1054	worker *self = (worker *)thr_arg;
1055
1056	/* try to distribute timeouts somewhat evenly */
1057	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1058	* (1000000000UL / 1024UL);
1059
1060	for (;;)
1061	{
1062	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1063
1064	LOCK (reqlock);
1065
1066	for (;;)
1067	{
1068	self->req = req = reqq_shift (&req_queue);
1069
1070	if (req)
1071	break;
1072
1073	++idle;
1074
1075	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1076	== ETIMEDOUT)
1077	{
1078	if (idle > max_idle)
1079	{
1080	--idle;
1081	UNLOCK (reqlock);
1082	LOCK (wrklock);
1083	--started;
1084	UNLOCK (wrklock);
1085	goto quit;
1086	}
1087
1088	/* we are allowed to idle, so do so without any timeout */
1089	pthread_cond_wait (&reqwait, &reqlock);
1090	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1091	}
1092
1093	--idle;
1094	}
1095
1096	--nready;
1097
1098	UNLOCK (reqlock);
1099
1100	errno = 0; /* strictly unnecessary */
1101
1102	if (!(req->flags & FLAG_CANCELLED))
1103	switch (req->type)
1104	{
1105	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1106	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1107
1108	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1109	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1110
1111	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1112	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1113	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1114
1115	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1116	case REQ_CLOSE: req->result = close (req->int1); break;
1117	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1118	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
1127	case REQ_READDIR: scandir_ (req, self); break;
1128
1129	case REQ_BUSY:
1130	{
1131	struct timeval tv;
1132
1133	tv.tv_sec = req->int1;
1134	tv.tv_usec = req->int2;
1135
1136	req->result = select (0, 0, 0, 0, &tv);
1137	}
1138
1139	case REQ_GROUP:
1140	case REQ_NOP:
1141	break;
1142
1143	case REQ_QUIT:
1144	goto quit;
1145
1146	default:
1147	req->result = ENOSYS;
1148	break;
1149	}
1150
1151	req->errorno = errno;
1152
1153	LOCK (reslock);
1154
1155	++npending;
1156
1157	if (!reqq_push (&res_queue, req))
1158	/* write a dummy byte to the pipe so fh becomes ready */
1159	write (respipe [1], &respipe, 1);
1160
1161	self->req = 0;
1162	worker_clear (self);
1163
1164	UNLOCK (reslock);
1165	}
1166
1167	quit:
1168	LOCK (wrklock);
1169	worker_free (self);
1170	UNLOCK (wrklock);
1171
1172	return 0;
1173	}
1174
1175	/*****************************************************************************/
1176
1177	static void atfork_prepare (void)
1178	{
1179	LOCK (wrklock);
1180	LOCK (reqlock);
1181	LOCK (reslock);
1182	#if !HAVE_PREADWRITE
1183	LOCK (preadwritelock);
1184	#endif
1185	#if !HAVE_READDIR_R
1186	LOCK (readdirlock);
1187	#endif
1188	}
1189
1190	static void atfork_parent (void)
1191	{
1192	#if !HAVE_READDIR_R
1193	UNLOCK (readdirlock);
1194	#endif
1195	#if !HAVE_PREADWRITE
1196	UNLOCK (preadwritelock);
1197	#endif
1198	UNLOCK (reslock);
1199	UNLOCK (reqlock);
1200	UNLOCK (wrklock);
1201	}
1202
1203	static void atfork_child (void)
1204	{
1205	aio_req prv;
1206
1207	while (prv = reqq_shift (&req_queue))
1208	req_free (prv);
1209
1210	while (prv = reqq_shift (&res_queue))
1211	req_free (prv);
1212
1213	while (wrk_first.next != &wrk_first)
1214	{
1215	worker *wrk = wrk_first.next;
1216
1217	if (wrk->req)
1218	req_free (wrk->req);
1219
1220	worker_clear (wrk);
1221	worker_free (wrk);
1222	}
1223
1224	started = 0;
1225	idle = 0;
1226	nreqs = 0;
1227	nready = 0;
1228	npending = 0;
1229
1230	close (respipe [0]);
1231	close (respipe [1]);
1232	create_pipe ();
1233
1234	atfork_parent ();
1235	}
1236
1237	#define dREQ \
1238	aio_req req; \
1239	int req_pri = next_pri; \
1240	next_pri = DEFAULT_PRI + PRI_BIAS; \
1241	\
1242	if (SvOK (callback) && !SvROK (callback)) \
1243	croak ("callback must be undef or of reference type"); \
1244	\
1245	Newz (0, req, 1, aio_cb); \
1246	if (!req) \
1247	croak ("out of memory during aio_req allocation"); \
1248	\
1249	req->callback = newSVsv (callback); \
1250	req->pri = req_pri
1251
1252	#define REQ_SEND \
1253	req_send (req); \
1254	\
1255	if (GIMME_V != G_VOID) \
1256	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1257
1258	MODULE = IO::AIO PACKAGE = IO::AIO	912	MODULE = IO::AIO PACKAGE = IO::AIO
1259		913
1260	PROTOTYPES: ENABLE	914	PROTOTYPES: ENABLE
1261		915
1262	BOOT:	916	BOOT:
1263	{	917	{
		918	static const struct {
		919	const char *name;
		920	IV iv;
		921	} *civ, const_iv[] = {
		922	# define const_niv(name, value) { # name, (IV) value },
		923	# define const_iv(name) { # name, (IV) name },
		924	# define const_eio(name) { # name, (IV) EIO_ ## name },
		925	const_iv (EXDEV)
		926	const_iv (ENOSYS)
		927	const_iv (O_RDONLY)
		928	const_iv (O_WRONLY)
		929	const_iv (O_RDWR)
		930	const_iv (O_CREAT)
		931	const_iv (O_TRUNC)
		932	const_iv (O_EXCL)
		933	const_iv (O_APPEND)
		934
		935	const_iv (O_ASYNC)
		936	const_iv (O_DIRECT)
		937	const_iv (O_NOATIME)
		938
		939	const_iv (O_CLOEXEC)
		940	const_iv (O_NOCTTY)
		941	const_iv (O_NOFOLLOW)
		942	const_iv (O_NONBLOCK)
		943	const_iv (O_EXEC)
		944	const_iv (O_SEARCH)
		945	const_iv (O_DIRECTORY)
		946	const_iv (O_DSYNC)
		947	const_iv (O_RSYNC)
		948	const_iv (O_SYNC)
		949	const_iv (O_TTY_INIT)
		950
		951	const_iv (S_IFIFO)
		952	const_iv (S_IFCHR)
		953	const_iv (S_IFBLK)
		954	const_iv (S_IFLNK)
		955	const_iv (S_IFREG)
		956	const_iv (S_IFDIR)
		957	const_iv (S_IFWHT)
		958	const_iv (S_IFSOCK)
		959	const_iv (S_IFMT)
		960
		961	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		962	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		963	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		964	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		965	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		966	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		967
		968	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		969	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		970	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		971	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		972	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		973
		974	const_iv (ST_RDONLY)
		975	const_iv (ST_NOSUID)
		976	const_iv (ST_NODEV)
		977	const_iv (ST_NOEXEC)
		978	const_iv (ST_SYNCHRONOUS)
		979	const_iv (ST_MANDLOCK)
		980	const_iv (ST_WRITE)
		981	const_iv (ST_APPEND)
		982	const_iv (ST_IMMUTABLE)
		983	const_iv (ST_NOATIME)
		984	const_iv (ST_NODIRATIME)
		985	const_iv (ST_RELATIME)
		986
		987	const_iv (PROT_NONE)
		988	const_iv (PROT_EXEC)
		989	const_iv (PROT_READ)
		990	const_iv (PROT_WRITE)
		991
		992	/*const_iv (MAP_FIXED)*/
		993	const_iv (MAP_PRIVATE)
		994	const_iv (MAP_SHARED)
		995	const_iv (MAP_ANONYMOUS)
		996
		997	/* linuxish */
		998	const_iv (MAP_HUGETLB)
		999	const_iv (MAP_LOCKED)
		1000	const_iv (MAP_NORESERVE)
		1001	const_iv (MAP_POPULATE)
		1002	const_iv (MAP_NONBLOCK)
		1003
		1004	const_eio (MCL_FUTURE)
		1005	const_eio (MCL_CURRENT)
		1006
		1007	const_eio (MS_ASYNC)
		1008	const_eio (MS_INVALIDATE)
		1009	const_eio (MS_SYNC)
		1010
		1011	const_eio (MT_MODIFY)
		1012
		1013	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1014	const_eio (SYNC_FILE_RANGE_WRITE)
		1015	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1016
		1017	const_eio (FALLOC_FL_KEEP_SIZE)
		1018
		1019	const_eio (READDIR_DENTS)
		1020	const_eio (READDIR_DIRS_FIRST)
		1021	const_eio (READDIR_STAT_ORDER)
		1022	const_eio (READDIR_FOUND_UNKNOWN)
		1023
		1024	const_eio (DT_UNKNOWN)
		1025	const_eio (DT_FIFO)
		1026	const_eio (DT_CHR)
		1027	const_eio (DT_DIR)
		1028	const_eio (DT_BLK)
		1029	const_eio (DT_REG)
		1030	const_eio (DT_LNK)
		1031	const_eio (DT_SOCK)
		1032	const_eio (DT_WHT)
		1033	};
		1034
1264	HV *stash = gv_stashpv ("IO::AIO", 1);	1035	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1036	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1037	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1038	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1265		1039
1266	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1040	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1267	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1041	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1268	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1269	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1270	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1271	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1272		1042
1273	create_pipe ();	1043	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1274	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1275	}
1276		1044
		1045	reinit ();
		1046	}
		1047
1277	void	1048	void
		1049	reinit ()
		1050	PROTOTYPE:
		1051
		1052	void
1278	max_poll_reqs (int nreqs)	1053	max_poll_reqs (unsigned int nreqs)
1279	PROTOTYPE: $	1054	PROTOTYPE: $
1280	CODE:	1055	CODE:
1281	max_poll_reqs = nreqs;	1056	eio_set_max_poll_reqs (nreqs);
1282		1057
1283	void	1058	void
1284	max_poll_time (double nseconds)	1059	max_poll_time (double nseconds)
1285	PROTOTYPE: $	1060	PROTOTYPE: $
1286	CODE:	1061	CODE:
1287	max_poll_time = nseconds * AIO_TICKS;	1062	eio_set_max_poll_time (nseconds);
1288		1063
1289	void	1064	void
1290	min_parallel (int nthreads)	1065	min_parallel (unsigned int nthreads)
1291	PROTOTYPE: $
1292
1293	void
1294	max_parallel (int nthreads)
1295	PROTOTYPE: $
1296
1297	void
1298	max_idle (int nthreads)
1299	PROTOTYPE: $	1066	PROTOTYPE: $
1300	CODE:	1067	CODE:
1301	set_max_idle (nthreads);	1068	eio_set_min_parallel (nthreads);
1302		1069
1303	int	1070	void
1304	max_outstanding (int maxreqs)	1071	max_parallel (unsigned int nthreads)
1305	PROTOTYPE: $	1072	PROTOTYPE: $
1306	CODE:	1073	CODE:
1307	RETVAL = max_outstanding;	1074	eio_set_max_parallel (nthreads);
		1075
		1076	void
		1077	max_idle (unsigned int nthreads)
		1078	PROTOTYPE: $
		1079	CODE:
		1080	eio_set_max_idle (nthreads);
		1081
		1082	void
		1083	idle_timeout (unsigned int seconds)
		1084	PROTOTYPE: $
		1085	CODE:
		1086	eio_set_idle_timeout (seconds);
		1087
		1088	void
		1089	max_outstanding (unsigned int maxreqs)
		1090	PROTOTYPE: $
		1091	CODE:
1308	max_outstanding = maxreqs;	1092	max_outstanding = maxreqs;
1309	OUTPUT:
1310	RETVAL
1311		1093
1312	void	1094	void
1313	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1095	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1314	SV * pathname
1315	int flags
1316	int mode
1317	SV * callback
1318	PROTOTYPE: $$$;$
1319	PPCODE:	1096	PPCODE:
1320	{	1097	{
1321	dREQ;	1098	dREQ;
1322		1099
		1100	req->type = EIO_WD_OPEN;
		1101	req_set_path1 (req, pathname);
		1102
		1103	REQ_SEND;
		1104	}
		1105
		1106	void
		1107	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1108	PPCODE:
		1109	{
		1110	dREQ;
		1111
1323	req->type = REQ_OPEN;	1112	req->type = EIO_OPEN;
1324	req->sv1 = newSVsv (pathname);	1113	req_set_path1 (req, pathname);
1325	req->ptr1 = SvPVbyte_nolen (pathname);
1326	req->int1 = flags;	1114	req->int1 = flags;
1327	req->mode = mode;	1115	req->int2 = mode;
1328		1116
1329	REQ_SEND;	1117	REQ_SEND;
1330	}	1118	}
1331		1119
1332	void	1120	void
1333	aio_close (fh,callback=&PL_sv_undef)	1121	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1334	SV * fh
1335	SV * callback
1336	PROTOTYPE: $;$
1337	ALIAS:	1122	ALIAS:
1338	aio_close = REQ_CLOSE
1339	aio_fsync = REQ_FSYNC	1123	aio_fsync = EIO_FSYNC
1340	aio_fdatasync = REQ_FDATASYNC	1124	aio_fdatasync = EIO_FDATASYNC
		1125	aio_syncfs = EIO_SYNCFS
1341	PPCODE:	1126	PPCODE:
1342	{	1127	{
		1128	int fd = s_fileno_croak (fh, 0);
1343	dREQ;	1129	dREQ;
1344		1130
1345	req->type = ix;	1131	req->type = ix;
1346	req->fh = newSVsv (fh);	1132	req->sv1 = newSVsv (fh);
1347	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1133	req->int1 = fd;
1348		1134
1349	REQ_SEND (req);	1135	REQ_SEND (req);
1350	}	1136	}
1351		1137
1352	void	1138	void
		1139	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	int fd = s_fileno_croak (fh, 0);
		1143	dREQ;
		1144
		1145	req->type = EIO_SYNC_FILE_RANGE;
		1146	req->sv1 = newSVsv (fh);
		1147	req->int1 = fd;
		1148	req->offs = offset;
		1149	req->size = nbytes;
		1150	req->int2 = flags;
		1151
		1152	REQ_SEND (req);
		1153	}
		1154
		1155	void
		1156	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1157	PPCODE:
		1158	{
		1159	int fd = s_fileno_croak (fh, 0);
		1160	dREQ;
		1161
		1162	req->type = EIO_FALLOCATE;
		1163	req->sv1 = newSVsv (fh);
		1164	req->int1 = fd;
		1165	req->int2 = mode;
		1166	req->offs = offset;
		1167	req->size = len;
		1168
		1169	REQ_SEND (req);
		1170	}
		1171
		1172	void
		1173	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1174	PPCODE:
		1175	{
		1176	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1177	int fd = s_fileno_croak (fh, 0);
		1178	dREQ;
		1179
		1180	if (expect_false (close_fd < 0))
		1181	{
		1182	int pipefd [2];
		1183
		1184	if (
		1185	#ifdef _WIN32
		1186	_pipe (pipefd, 1, _O_BINARY) < 0
		1187	#else
		1188	pipe (pipefd) < 0
		1189	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1190	#endif
		1191	|| close (pipefd [1]) < 0
		1192	)
		1193	abort (); /*D*/
		1194
		1195	close_fd = pipefd [0];
		1196	}
		1197
		1198	req->type = EIO_DUP2;
		1199	req->int1 = close_fd;
		1200	req->sv2 = newSVsv (fh);
		1201	req->int2 = fd;
		1202
		1203	REQ_SEND (req);
		1204	}
		1205
		1206	void
1353	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1207	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1354	SV * fh
1355	UV offset
1356	UV length
1357	SV * data
1358	UV dataoffset
1359	SV * callback
1360	ALIAS:	1208	ALIAS:
1361	aio_read = REQ_READ	1209	aio_read = EIO_READ
1362	aio_write = REQ_WRITE	1210	aio_write = EIO_WRITE
1363	PROTOTYPE: $$$$$;$
1364	PPCODE:	1211	PPCODE:
1365	{	1212	{
1366	STRLEN svlen;	1213	STRLEN svlen;
		1214	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1367	char *svptr = SvPVbyte (data, svlen);	1215	char *svptr = SvPVbyte (data, svlen);
1368		1216	UV len = SvUV (length);
1369	SvUPGRADE (data, SVt_PV);
1370	SvPOK_on (data);
1371		1217
1372	if (dataoffset < 0)	1218	if (dataoffset < 0)
1373	dataoffset += svlen;	1219	dataoffset += svlen;
1374		1220
1375	if (dataoffset < 0 || dataoffset > svlen)	1221	if (dataoffset < 0 || dataoffset > svlen)
1376	croak ("data offset outside of string");	1222	croak ("dataoffset outside of data scalar");
1377		1223
1378	if (ix == REQ_WRITE)	1224	if (ix == EIO_WRITE)
1379	{	1225	{
1380	/* write: check length and adjust. */	1226	/* write: check length and adjust. */
1381	if (length < 0 || length + dataoffset > svlen)	1227	if (!SvOK (length) || len + dataoffset > svlen)
1382	length = svlen - dataoffset;	1228	len = svlen - dataoffset;
1383	}	1229	}
1384	else	1230	else
1385	{	1231	{
1386	/* read: grow scalar as necessary */	1232	/* read: check type and grow scalar as necessary */
		1233	SvUPGRADE (data, SVt_PV);
1387	svptr = SvGROW (data, length + dataoffset);	1234	svptr = SvGROW (data, len + dataoffset + 1);
1388	}	1235	}
1389
1390	if (length < 0)
1391	croak ("length must not be negative");
1392		1236
1393	{	1237	{
1394	dREQ;	1238	dREQ;
1395		1239
1396	req->type = ix;	1240	req->type = ix;
1397	req->fh = newSVsv (fh);	1241	req->sv1 = newSVsv (fh);
1398	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1242	req->int1 = fd;
1399	: IoOFP (sv_2io (fh)));	1243	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1400	req->offs = offset;
1401	req->size = length;	1244	req->size = len;
1402	req->sv1 = SvREFCNT_inc (data);	1245	req->sv2 = SvREFCNT_inc (data);
1403	req->ptr1 = (char *)svptr + dataoffset;	1246	req->ptr2 = (char *)svptr + dataoffset;
1404	req->stroffset = dataoffset;	1247	req->stroffset = dataoffset;
1405		1248
1406	if (!SvREADONLY (data))	1249	if (!SvREADONLY (data))
1407	{	1250	{
1408	SvREADONLY_on (data);	1251	SvREADONLY_on (data);
1409	req->flags |= FLAG_SV1_RO_OFF;	1252	req->flags |= FLAG_SV2_RO_OFF;
1410	}	1253	}
1411		1254
1412	REQ_SEND;	1255	REQ_SEND;
1413	}	1256	}
1414	}	1257	}
1415		1258
1416	void	1259	void
1417	aio_readlink (path,callback=&PL_sv_undef)	1260	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1418	SV * path	1261	ALIAS:
1419	SV * callback	1262	aio_readlink = EIO_READLINK
1420	PROTOTYPE: $$;$	1263	aio_realpath = EIO_REALPATH
1421	PPCODE:	1264	PPCODE:
1422	{	1265	{
1423	SV *data;
1424	dREQ;	1266	dREQ;
1425		1267
1426	data = newSV (NAME_MAX);
1427	SvPOK_on (data);
1428
1429	req->type = REQ_READLINK;	1268	req->type = ix;
1430	req->fh = newSVsv (path);	1269	req_set_path1 (req, pathname);
1431	req->ptr2 = SvPVbyte_nolen (path);
1432	req->sv1 = data;
1433	req->ptr1 = SvPVbyte_nolen (data);
1434		1270
1435	REQ_SEND;	1271	REQ_SEND;
1436	}	1272	}
1437		1273
1438	void	1274	void
1439	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1275	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1440	SV * out_fh
1441	SV * in_fh
1442	UV in_offset
1443	UV length
1444	SV * callback
1445	PROTOTYPE: $$$$;$
1446	PPCODE:	1276	PPCODE:
1447	{	1277	{
		1278	int ifd = s_fileno_croak (in_fh , 0);
		1279	int ofd = s_fileno_croak (out_fh, 1);
1448	dREQ;	1280	dREQ;
1449		1281
1450	req->type = REQ_SENDFILE;	1282	req->type = EIO_SENDFILE;
1451	req->fh = newSVsv (out_fh);	1283	req->sv1 = newSVsv (out_fh);
1452	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1284	req->int1 = ofd;
1453	req->sv2 = newSVsv (in_fh);	1285	req->sv2 = newSVsv (in_fh);
1454	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1286	req->int2 = ifd;
1455	req->offs = in_offset;	1287	req->offs = in_offset;
1456	req->size = length;	1288	req->size = length;
1457		1289
1458	REQ_SEND;	1290	REQ_SEND;
1459	}	1291	}
1460		1292
1461	void	1293	void
1462	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1294	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1463	SV * fh
1464	UV offset
1465	IV length
1466	SV * callback
1467	PROTOTYPE: $$$;$
1468	PPCODE:	1295	PPCODE:
1469	{	1296	{
		1297	int fd = s_fileno_croak (fh, 0);
1470	dREQ;	1298	dREQ;
1471		1299
1472	req->type = REQ_READAHEAD;	1300	req->type = EIO_READAHEAD;
1473	req->fh = newSVsv (fh);	1301	req->sv1 = newSVsv (fh);
1474	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1302	req->int1 = fd;
1475	req->offs = offset;	1303	req->offs = offset;
1476	req->size = length;	1304	req->size = length;
1477		1305
1478	REQ_SEND;	1306	REQ_SEND;
1479	}	1307	}
1480		1308
1481	void	1309	void
1482	aio_stat (fh_or_path,callback=&PL_sv_undef)	1310	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1483	SV * fh_or_path
1484	SV * callback
1485	ALIAS:	1311	ALIAS:
1486	aio_stat = REQ_STAT	1312	aio_stat = EIO_STAT
1487	aio_lstat = REQ_LSTAT	1313	aio_lstat = EIO_LSTAT
		1314	aio_statvfs = EIO_STATVFS
1488	PPCODE:	1315	PPCODE:
1489	{	1316	{
1490	dREQ;	1317	dREQ;
1491		1318
1492	req->ptr2 = malloc (sizeof (Stat_t));	1319	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1493	if (!req->ptr2)
1494	{
1495	req_free (req);
1496	croak ("out of memory during aio_req statdata allocation");
1497	}
1498
1499	req->flags |= FLAG_PTR2_FREE;
1500
1501	if (SvPOK (fh_or_path))
1502	{
1503	req->type = ix;
1504	req->sv1 = newSVsv (fh_or_path);
1505	req->ptr1 = SvPVbyte_nolen (fh_or_path);
1506	}
1507	else
1508	{
1509	req->type = REQ_FSTAT;
1510	req->fh = newSVsv (fh_or_path);
1511	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1512	}
1513		1320
1514	REQ_SEND;	1321	REQ_SEND;
1515	}	1322	}
1516		1323
		1324	UV
		1325	major (UV dev)
		1326	ALIAS:
		1327	minor = 1
		1328	CODE:
		1329	RETVAL = ix ? major (dev) : minor (dev);
		1330	OUTPUT:
		1331	RETVAL
		1332
		1333	UV
		1334	makedev (UV maj, UV min)
		1335	CODE:
		1336	RETVAL = makedev (maj, min);
		1337	OUTPUT:
		1338	RETVAL
		1339
1517	void	1340	void
		1341	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1342	PPCODE:
		1343	{
		1344	dREQ;
		1345
		1346	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1347	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1348	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
		1354	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1360	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1361
		1362	REQ_SEND;
		1363	}
		1364
		1365	void
		1366	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1367	PPCODE:
		1368	{
		1369	dREQ;
		1370
		1371	req->int2 = mode;
		1372	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1373
		1374	REQ_SEND;
		1375	}
		1376
		1377	void
		1378	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1379	PPCODE:
		1380	{
		1381	dREQ;
		1382
		1383	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1384	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1385	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1386
		1387	REQ_SEND;
		1388	}
		1389
		1390	void
		1391	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1392	PPCODE:
		1393	{
		1394	dREQ;
		1395
		1396	req->type = EIO_READDIR;
		1397	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1398
		1399	if (flags & EIO_READDIR_DENTS)
		1400	req->int1 |= EIO_READDIR_CUSTOM2;
		1401
		1402	req_set_path1 (req, pathname);
		1403
		1404	REQ_SEND;
		1405	}
		1406
		1407	void
		1408	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1409	PPCODE:
		1410	{
		1411	dREQ;
		1412
		1413	req->type = EIO_MKDIR;
		1414	req->int2 = mode;
		1415	req_set_path1 (req, pathname);
		1416
		1417	REQ_SEND;
		1418	}
		1419
		1420	void
1518	aio_unlink (pathname,callback=&PL_sv_undef)	1421	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1519	SV * pathname
1520	SV * callback
1521	ALIAS:	1422	ALIAS:
1522	aio_unlink = REQ_UNLINK	1423	aio_unlink = EIO_UNLINK
1523	aio_rmdir = REQ_RMDIR	1424	aio_rmdir = EIO_RMDIR
1524	aio_readdir = REQ_READDIR	1425	aio_readdir = EIO_READDIR
1525	PPCODE:	1426	PPCODE:
1526	{	1427	{
1527	dREQ;	1428	dREQ;
1528		1429
1529	req->type = ix;	1430	req->type = ix;
1530	req->sv1 = newSVsv (pathname);	1431	req_set_path1 (req, pathname);
1531	req->ptr1 = SvPVbyte_nolen (pathname);
1532		1432
1533	REQ_SEND;	1433	REQ_SEND;
1534	}	1434	}
1535		1435
1536	void	1436	void
1537	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1437	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1538	SV * oldpath
1539	SV * newpath
1540	SV * callback
1541	ALIAS:	1438	ALIAS:
1542	aio_link = REQ_LINK	1439	aio_link = EIO_LINK
1543	aio_symlink = REQ_SYMLINK	1440	aio_symlink = EIO_SYMLINK
1544	aio_rename = REQ_RENAME	1441	aio_rename = EIO_RENAME
		1442	PPCODE:
		1443	{
		1444	dREQ;
		1445	eio_wd wd2 = 0;
		1446
		1447	req->type = ix;
		1448	req_set_path1 (req, oldpath);
		1449	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1450	req->int3 = (long)wd2;
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
		1456	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1545	PPCODE:	1457	PPCODE:
1546	{	1458	{
1547	dREQ;	1459	dREQ;
1548		1460
1549	req->type = ix;	1461	req->type = EIO_MKNOD;
1550	req->fh = newSVsv (oldpath);	1462	req->int2 = (mode_t)mode;
1551	req->ptr2 = SvPVbyte_nolen (req->fh);	1463	req->offs = dev;
1552	req->sv1 = newSVsv (newpath);	1464	req_set_path1 (req, pathname);
1553	req->ptr1 = SvPVbyte_nolen (newpath);
1554		1465
1555	REQ_SEND;	1466	REQ_SEND;
1556	}	1467	}
1557		1468
1558	void	1469	void
1559	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1470	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1560	SV * pathname	1471	ALIAS:
1561	SV * callback	1472	aio_mtouch = EIO_MTOUCH
1562	UV mode	1473	aio_msync = EIO_MSYNC
1563	UV dev	1474	PPCODE:
		1475	{
		1476	STRLEN svlen;
		1477	char *svptr = SvPVbyte (data, svlen);
		1478	UV len = SvUV (length);
		1479
		1480	if (offset < 0)
		1481	offset += svlen;
		1482
		1483	if (offset < 0 || offset > svlen)
		1484	croak ("offset outside of scalar");
		1485
		1486	if (!SvOK (length) || len + offset > svlen)
		1487	len = svlen - offset;
		1488
		1489	{
		1490	dREQ;
		1491
		1492	req->type = ix;
		1493	req->sv2 = SvREFCNT_inc (data);
		1494	req->ptr2 = (char *)svptr + offset;
		1495	req->size = len;
		1496	req->int1 = flags;
		1497
		1498	REQ_SEND;
		1499	}
		1500	}
		1501
		1502	void
		1503	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1504	PPCODE:
		1505	{
		1506	STRLEN svlen;
		1507	char *svptr = SvPVbyte (data, svlen);
		1508	UV len = SvUV (length);
		1509
		1510	if (offset < 0)
		1511	offset += svlen;
		1512
		1513	if (offset < 0 || offset > svlen)
		1514	croak ("offset outside of scalar");
		1515
		1516	if (!SvOK (length) || len + offset > svlen)
		1517	len = svlen - offset;
		1518
		1519	{
		1520	dREQ;
		1521
		1522	req->type = EIO_MLOCK;
		1523	req->sv2 = SvREFCNT_inc (data);
		1524	req->ptr2 = (char *)svptr + offset;
		1525	req->size = len;
		1526
		1527	REQ_SEND;
		1528	}
		1529	}
		1530
		1531	void
		1532	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1533	PPCODE:
		1534	{
		1535	dREQ;
		1536
		1537	req->type = EIO_MLOCKALL;
		1538	req->int1 = flags;
		1539
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	aio_busy (double delay, SV *callback=&PL_sv_undef)
1564	PPCODE:	1545	PPCODE:
1565	{	1546	{
1566	dREQ;	1547	dREQ;
1567		1548
1568	req->type = REQ_MKNOD;	1549	req->type = EIO_BUSY;
1569	req->sv1 = newSVsv (pathname);	1550	req->nv1 = delay < 0. ? 0. : delay;
1570	req->ptr1 = SvPVbyte_nolen (pathname);	1551
1571	req->mode = (mode_t)mode;
1572	req->offs = dev;
1573
1574	REQ_SEND;	1552	REQ_SEND;
1575	}	1553	}
1576		1554
1577	void	1555	void
1578	aio_busy (delay,callback=&PL_sv_undef)	1556	aio_group (SV *callback=&PL_sv_undef)
1579	double delay	1557	PPCODE:
1580	SV * callback	1558	{
		1559	dREQ;
		1560
		1561	req->type = EIO_GROUP;
		1562
		1563	req_submit (req);
		1564	XPUSHs (req_sv (req, aio_grp_stash));
		1565	}
		1566
		1567	void
		1568	aio_nop (SV *callback=&PL_sv_undef)
		1569	ALIAS:
		1570	aio_nop = EIO_NOP
		1571	aio_sync = EIO_SYNC
1581	PPCODE:	1572	PPCODE:
1582	{	1573	{
1583	dREQ;	1574	dREQ;
1584		1575
1585	req->type = REQ_BUSY;
1586	req->int1 = delay < 0. ? 0 : delay;
1587	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1588
1589	REQ_SEND;
1590	}
1591
1592	void
1593	aio_group (callback=&PL_sv_undef)
1594	SV * callback
1595	PROTOTYPE: ;$
1596	PPCODE:
1597	{
1598	dREQ;
1599
1600	req->type = REQ_GROUP;
1601
1602	req_send (req);
1603	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1604	}
1605
1606	void
1607	aio_nop (callback=&PL_sv_undef)
1608	SV * callback
1609	PPCODE:
1610	{
1611	dREQ;
1612
1613	req->type = REQ_NOP;	1576	req->type = ix;
1614		1577
1615	REQ_SEND;	1578	REQ_SEND;
1616	}	1579	}
1617		1580
1618	int	1581	int
1619	aioreq_pri (int pri = 0)	1582	aioreq_pri (int pri = 0)
1620	PROTOTYPE: ;$
1621	CODE:	1583	CODE:
1622	RETVAL = next_pri - PRI_BIAS;	1584	RETVAL = next_pri;
1623	if (items > 0)	1585	if (items > 0)
1624	{	1586	{
1625	if (pri < PRI_MIN) pri = PRI_MIN;	1587	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1626	if (pri > PRI_MAX) pri = PRI_MAX;	1588	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1627	next_pri = pri + PRI_BIAS;	1589	next_pri = pri;
1628	}	1590	}
1629	OUTPUT:	1591	OUTPUT:
1630	RETVAL	1592	RETVAL
1631		1593
1632	void	1594	void
1633	aioreq_nice (int nice = 0)	1595	aioreq_nice (int nice = 0)
1634	CODE:	1596	CODE:
1635	nice = next_pri - nice;	1597	nice = next_pri - nice;
1636	if (nice < PRI_MIN) nice = PRI_MIN;	1598	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1637	if (nice > PRI_MAX) nice = PRI_MAX;	1599	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1638	next_pri = nice + PRI_BIAS;	1600	next_pri = nice;
1639		1601
1640	void	1602	void
1641	flush ()	1603	flush ()
1642	PROTOTYPE:
1643	CODE:	1604	CODE:
1644	while (nreqs)	1605	while (eio_nreqs ())
1645	{	1606	{
1646	poll_wait ();	1607	poll_wait ();
1647	poll_cb (0);	1608	poll_cb ();
1648	}	1609	}
1649		1610
1650	void	1611	int
1651	poll()	1612	poll ()
1652	PROTOTYPE:
1653	CODE:	1613	CODE:
1654	if (nreqs)
1655	{
1656	poll_wait ();	1614	poll_wait ();
1657	poll_cb (0);	1615	RETVAL = poll_cb ();
1658	}
1659
1660	int
1661	poll_fileno()
1662	PROTOTYPE:
1663	CODE:
1664	RETVAL = respipe [0];
1665	OUTPUT:	1616	OUTPUT:
1666	RETVAL	1617	RETVAL
1667		1618
1668	int	1619	int
		1620	poll_fileno ()
		1621	CODE:
		1622	RETVAL = s_epipe_fd (&respipe);
		1623	OUTPUT:
		1624	RETVAL
		1625
		1626	int
1669	poll_cb(...)	1627	poll_cb (...)
1670	PROTOTYPE:	1628	PROTOTYPE:
1671	CODE:	1629	CODE:
1672	RETVAL = poll_cb ();	1630	RETVAL = poll_cb ();
1673	OUTPUT:	1631	OUTPUT:
1674	RETVAL	1632	RETVAL
1675		1633
1676	void	1634	void
1677	poll_wait()	1635	poll_wait ()
1678	PROTOTYPE:
1679	CODE:	1636	CODE:
1680	if (nreqs)
1681	poll_wait ();	1637	poll_wait ();
1682		1638
1683	int	1639	int
1684	nreqs()	1640	nreqs ()
1685	PROTOTYPE:
1686	CODE:	1641	CODE:
1687	RETVAL = nreqs;	1642	RETVAL = eio_nreqs ();
1688	OUTPUT:	1643	OUTPUT:
1689	RETVAL	1644	RETVAL
1690		1645
1691	int	1646	int
1692	nready()	1647	nready ()
1693	PROTOTYPE:
1694	CODE:	1648	CODE:
1695	RETVAL = get_nready ();	1649	RETVAL = eio_nready ();
1696	OUTPUT:	1650	OUTPUT:
1697	RETVAL	1651	RETVAL
1698		1652
1699	int	1653	int
1700	npending()	1654	npending ()
1701	PROTOTYPE:
1702	CODE:	1655	CODE:
1703	RETVAL = get_npending ();	1656	RETVAL = eio_npending ();
1704	OUTPUT:	1657	OUTPUT:
1705	RETVAL	1658	RETVAL
1706		1659
1707	int	1660	int
1708	nthreads()	1661	nthreads ()
1709	PROTOTYPE:
1710	CODE:	1662	CODE:
1711	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1663	RETVAL = eio_nthreads ();
1712	RETVAL = started;
1713	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714	OUTPUT:	1664	OUTPUT:
1715	RETVAL	1665	RETVAL
1716		1666
		1667	int
		1668	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1669	CODE:
		1670	RETVAL = posix_fadvise (fh, offset, length, advice);
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	IV
		1675	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1676	CODE:
		1677	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void
		1682	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1683	PPCODE:
		1684	sv_unmagic (scalar, MMAP_MAGIC);
		1685	{
		1686	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1687	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1688	if (addr == (void *)-1)
		1689	XSRETURN_NO;
		1690
		1691	sv_force_normal (scalar);
		1692
		1693	/* we store the length in mg_obj, as namlen is I32 :/ */
		1694	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1695	->mg_obj = (SV *)length;
		1696
		1697	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1698
		1699	if (!(prot & PROT_WRITE))
		1700	SvREADONLY_on (scalar);
		1701
		1702	if (SvLEN (scalar))
		1703	Safefree (SvPVX (scalar));
		1704
		1705	SvPVX (scalar) = (char *)addr;
		1706	SvCUR_set (scalar, length);
		1707	SvLEN_set (scalar, 0);
		1708	SvPOK_only (scalar);
		1709
		1710	XSRETURN_YES;
		1711	}
		1712
		1713	void
		1714	munmap (SV *scalar)
		1715	CODE:
		1716	sv_unmagic (scalar, MMAP_MAGIC);
		1717
		1718	int
		1719	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1720	ALIAS:
		1721	mprotect = 1
		1722	CODE:
		1723	{
		1724	STRLEN svlen;
		1725	void *addr = SvPVbyte (scalar, svlen);
		1726	size_t len = SvUV (length);
		1727
		1728	if (offset < 0)
		1729	offset += svlen;
		1730
		1731	if (offset < 0 || offset > svlen)
		1732	croak ("offset outside of scalar");
		1733
		1734	if (!SvOK (length) || len + offset > svlen)
		1735	len = svlen - offset;
		1736
		1737	addr = (void *)(((intptr_t)addr) + offset);
		1738	eio_page_align (&addr, &len);
		1739
		1740	switch (ix)
		1741	{
		1742	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1743	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1744	}
		1745	}
		1746	OUTPUT:
		1747	RETVAL
		1748
		1749	int
		1750	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1751	CODE:
		1752	{
		1753	STRLEN svlen;
		1754	void *addr = SvPVbyte (scalar, svlen);
		1755	size_t len = SvUV (length);
		1756
		1757	if (offset < 0)
		1758	offset += svlen;
		1759
		1760	if (offset < 0 || offset > svlen)
		1761	croak ("offset outside of scalar");
		1762
		1763	if (!SvOK (length) || len + offset > svlen)
		1764	len = svlen - offset;
		1765
		1766	addr = (void *)(((intptr_t)addr) + offset);
		1767	eio_page_align (&addr, &len);
		1768	#if _POSIX_MEMLOCK_RANGE
		1769	RETVAL = munlock (addr, len);
		1770	#else
		1771	RETVAL = ((errno = ENOSYS), -1);
		1772	#endif
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlockall ()
		1779	CODE:
		1780	#if _POSIX_MEMLOCK
		1781	munlockall ();
		1782	#else
		1783	RETVAL = -1;
		1784	errno = ENOSYS;
		1785	#endif
		1786	OUTPUT:
		1787	RETVAL
		1788
		1789	void _on_next_submit (SV *cb)
		1790	CODE:
		1791	SvREFCNT_dec (on_next_submit);
		1792	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1793
1717	PROTOTYPES: DISABLE	1794	PROTOTYPES: DISABLE
		1795
		1796	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1797
		1798	BOOT:
		1799	{
		1800	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1801	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1802	}
		1803
		1804	void
		1805	DESTROY (SV *self)
		1806	CODE:
		1807	{
		1808	aio_wd wd = SvAIO_WD (self);
		1809	#if HAVE_AT
		1810	{
		1811	SV *callback = &PL_sv_undef;
		1812	dREQ; /* clobbers next_pri :/ */
		1813	next_pri = req->pri; /* restore next_pri */
		1814	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1815	req->type = EIO_WD_CLOSE;
		1816	req->wd = wd;
		1817	REQ_SEND;
		1818	}
		1819	#else
		1820	eio_wd_close_sync (wd);
		1821	#endif
		1822	}
1718		1823
1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1824	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720		1825
1721	void	1826	void
1722	cancel (aio_req_ornot req)	1827	cancel (aio_req_ornot req)
1723	CODE:	1828	CODE:
1724	req_cancel (req);	1829	eio_cancel (req);
1725		1830
1726	void	1831	void
1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1832	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728	CODE:	1833	PPCODE:
		1834	{
		1835	if (GIMME_V != G_VOID)
		1836	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1837
		1838	if (items > 1)
		1839	{
		1840	SV *cb_cv =get_cb (callback);
		1841
1729	SvREFCNT_dec (req->callback);	1842	SvREFCNT_dec (req->callback);
1730	req->callback = newSVsv (callback);	1843	req->callback = SvREFCNT_inc (cb_cv);
		1844	}
		1845	}
1731		1846
1732	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1847	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733		1848
1734	void	1849	void
1735	add (aio_req grp, ...)	1850	add (aio_req grp, ...)
1736	PPCODE:	1851	PPCODE:
1737	{	1852	{
1738	int i;	1853	int i;
1739	aio_req req;
1740		1854
1741	if (grp->int1 == 2)	1855	if (grp->int1 == 2)
1742	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1856	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743		1857
1744	for (i = 1; i < items; ++i )	1858	for (i = 1; i < items; ++i )
1745	{	1859	{
		1860	aio_req req;
		1861
1746	if (GIMME_V != G_VOID)	1862	if (GIMME_V != G_VOID)
1747	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1863	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748		1864
1749	req = SvAIO_REQ (ST (i));	1865	req = SvAIO_REQ (ST (i));
1750		1866
1751	if (req)	1867	if (req)
1752	{	1868	eio_grp_add (grp, req);
1753	++grp->size;
1754	req->grp = grp;
1755
1756	req->grp_prev = 0;
1757	req->grp_next = grp->grp_first;
1758
1759	if (grp->grp_first)
1760	grp->grp_first->grp_prev = req;
1761
1762	grp->grp_first = req;
1763	}
1764	}	1869	}
1765	}	1870	}
1766		1871
1767	void	1872	void
1768	cancel_subs (aio_req_ornot req)	1873	cancel_subs (aio_req_ornot req)
…		…
1777	AV *av;	1882	AV *av;
1778		1883
1779	grp->errorno = errno;	1884	grp->errorno = errno;
1780		1885
1781	av = newAV ();	1886	av = newAV ();
		1887	av_extend (av, items - 1);
1782		1888
1783	for (i = 1; i < items; ++i )	1889	for (i = 1; i < items; ++i )
1784	av_push (av, newSVsv (ST (i)));	1890	av_push (av, newSVsv (ST (i)));
1785		1891
1786	SvREFCNT_dec (grp->sv1);	1892	SvREFCNT_dec (grp->sv1);
…		…
1793	grp->errorno = errorno;	1899	grp->errorno = errorno;
1794		1900
1795	void	1901	void
1796	limit (aio_req grp, int limit)	1902	limit (aio_req grp, int limit)
1797	CODE:	1903	CODE:
1798	grp->int2 = limit;	1904	eio_grp_limit (grp, limit);
1799	aio_grp_feed (grp);
1800		1905
1801	void	1906	void
1802	feed (aio_req grp, SV *callback=&PL_sv_undef)	1907	feed (aio_req grp, SV *callback=&PL_sv_undef)
1803	CODE:	1908	CODE:
1804	{	1909	{
1805	SvREFCNT_dec (grp->sv2);	1910	SvREFCNT_dec (grp->sv2);
1806	grp->sv2 = newSVsv (callback);	1911	grp->sv2 = newSVsv (callback);
		1912	grp->feed = aio_grp_feed;
1807		1913
1808	if (grp->int2 <= 0)	1914	if (grp->int2 <= 0)
1809	grp->int2 = 2;	1915	grp->int2 = 2;
1810		1916
1811	aio_grp_feed (grp);	1917	eio_grp_limit (grp, grp->int2);
1812	}	1918	}
1813		1919

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