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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.209 by root, Sun Apr 1 17:46:02 2012 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	#define EIO_STRUCT_STAT struct _stati64
		68	#define EIO_STRUCT_STATI64
		69
		70	#else
		71
40	# include <sys/socket.h>	72	#include <sys/time.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	73	#include <sys/select.h>
		74	#include <unistd.h>
		75	#include <utime.h>
		76	#include <signal.h>
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	#endif
		81
		82	/* use NV for 32 bit perls as it allows larger offsets */
		83	#if IVSIZE >= 8
		84	# define VAL64 IV
		85	# define SvVAL64 SvIV
		86	# define newSVval64 newSViv
		87	#else
		88	# define VAL64 NV
		89	# define SvVAL64 SvNV
		90	# define newSVval64 newSVnv
		91	#endif
		92
		93	/*****************************************************************************/
		94
		95	#if __GNUC__ >= 3
		96	# define expect(expr,value) __builtin_expect ((expr),(value))
		97	#else
		98	# define expect(expr,value) (expr)
		99	#endif
		100
		101	#define expect_false(expr) expect ((expr) != 0, 0)
		102	#define expect_true(expr) expect ((expr) != 0, 1)
		103
		104	/*****************************************************************************/
		105
		106	typedef SV SV8; /* byte-sv, used for argument-checking */
		107	typedef int aio_rfd; /* read file desriptor */
		108	typedef int aio_wfd; /* write file descriptor */
		109
		110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		111
		112	#define EIO_REQ_MEMBERS \
		113	SV *callback; \
		114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
		116	STRLEN stroffset; \
		117	SV *self;
		118
		119	#define EIO_NO_WRAPPERS 1
		120
		121	#include "libeio/config.h"
		122	#include "libeio/eio.h"
		123
		124	static int req_invoke (eio_req *req);
		125	#define EIO_FINISH(req) req_invoke (req)
		126	static void req_destroy (eio_req *grp);
		127	#define EIO_DESTROY(req) req_destroy (req)
		128
		129	#include "libeio/eio.c"
		130
		131	/* Linux/others */
		132	#ifndef O_ASYNC
		133	# define O_ASYNC 0
		134	#endif
		135	#ifndef O_DIRECT
		136	# define O_DIRECT 0
		137	#endif
		138	#ifndef O_NOATIME
		139	# define O_NOATIME 0
		140	#endif
		141
		142	/* POSIX */
		143	#ifndef O_CLOEXEC
		144	# define O_CLOEXEC 0
		145	#endif
		146	#ifndef O_NOFOLLOW
		147	# define O_NOFOLLOW 0
		148	#endif
		149	#ifndef O_NOCTTY
		150	# define O_NOCTTY 0
		151	#endif
		152	#ifndef O_NONBLOCK
		153	# define O_NONBLOCK 0
		154	#endif
		155	#ifndef O_EXEC
		156	# define O_EXEC 0
		157	#endif
		158	#ifndef O_SEARCH
		159	# define O_SEARCH 0
		160	#endif
		161	#ifndef O_DIRECTORY
		162	# define O_DIRECTORY 0
		163	#endif
		164	#ifndef O_DSYNC
		165	# define O_DSYNC 0
		166	#endif
		167	#ifndef O_RSYNC
		168	# define O_RSYNC 0
		169	#endif
		170	#ifndef O_SYNC
		171	# define O_SYNC 0
		172	#endif
		173	#ifndef O_TTY_INIT
		174	# define O_TTY_INIT 0
		175	#endif
		176
		177	#ifndef POSIX_FADV_NORMAL
		178	# define POSIX_FADV_NORMAL 0
		179	#endif
		180	#ifndef POSIX_FADV_SEQUENTIAL
		181	# define POSIX_FADV_SEQUENTIAL 0
		182	#endif
		183	#ifndef POSIX_FADV_RANDOM
		184	# define POSIX_FADV_RANDOM 0
		185	#endif
		186	#ifndef POSIX_FADV_NOREUSE
		187	# define POSIX_FADV_NOREUSE 0
		188	#endif
		189	#ifndef POSIX_FADV_WILLNEED
		190	# define POSIX_FADV_WILLNEED 0
		191	#endif
		192	#ifndef POSIX_FADV_DONTNEED
		193	# define POSIX_FADV_DONTNEED 0
		194	#endif
		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef POSIX_MADV_NORMAL
		201	# define POSIX_MADV_NORMAL 0
		202	#endif
		203	#ifndef POSIX_MADV_SEQUENTIAL
		204	# define POSIX_MADV_SEQUENTIAL 0
		205	#endif
		206	#ifndef POSIX_MADV_RANDOM
		207	# define POSIX_MADV_RANDOM 0
		208	#endif
		209	#ifndef POSIX_MADV_WILLNEED
		210	# define POSIX_MADV_WILLNEED 0
		211	#endif
		212	#ifndef POSIX_MADV_DONTNEED
		213	# define POSIX_MADV_DONTNEED 0
		214	#endif
		215
		216	#if !HAVE_POSIX_MADVISE
		217	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		218	#endif
		219
		220	#ifndef PROT_NONE
		221	# define PROT_NONE 0
		222	#endif
		223	#ifndef PROT_READ
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_WRITE
		227	# define PROT_READ 0
		228	#endif
		229	#ifndef PROT_EXEC
		230	# define PROT_EXEC 0
		231	#endif
		232
		233	#ifndef ST_RDONLY
		234	# define ST_RDONLY 0
		235	#endif
		236	#ifndef ST_NOSUID
		237	# define ST_NOSUID 0
		238	#endif
		239	#ifndef ST_NODEV
		240	# define ST_NODEV 0
		241	#endif
		242	#ifndef ST_NOEXEC
		243	# define ST_NOEXEC 0
		244	#endif
		245	#ifndef ST_SYNCHRONOUS
		246	# define ST_SYNCHRONOUS 0
		247	#endif
		248	#ifndef ST_MANDLOCK
		249	# define ST_MANDLOCK 0
		250	#endif
		251	#ifndef ST_WRITE
		252	# define ST_WRITE 0
		253	#endif
		254	#ifndef ST_APPEND
		255	# define ST_APPEND 0
		256	#endif
		257	#ifndef ST_IMMUTABLE
		258	# define ST_IMMUTABLE 0
		259	#endif
		260	#ifndef ST_NOATIME
		261	# define ST_NOATIME 0
		262	#endif
		263	#ifndef ST_NODIRATIME
		264	# define ST_NODIRATIME 0
		265	#endif
		266	#ifndef ST_RELATIME
		267	# define ST_RELATIME 0
		268	#endif
		269
		270	#ifndef S_IFIFO
		271	# define S_IFIFO 0
		272	#endif
		273	#ifndef S_IFCHR
		274	# define S_IFCHR 0
		275	#endif
		276	#ifndef S_IFBLK
		277	# define S_IFBLK 0
		278	#endif
		279	#ifndef S_IFLNK
		280	# define S_IFLNK 0
		281	#endif
		282	#ifndef S_IFREG
		283	# define S_IFREG 0
		284	#endif
		285	#ifndef S_IFDIR
		286	# define S_IFDIR 0
		287	#endif
		288	#ifndef S_IFWHT
		289	# define S_IFWHT 0
		290	#endif
		291	#ifndef S_IFSOCK
		292	# define S_IFSOCK 0
		293	#endif
		294
		295	#ifndef MAP_ANONYMOUS
		296	# ifdef MAP_ANON
		297	# define MAP_ANONYMOUS MAP_ANON
43	# else	298	# else
44	# error sendfile support requested but not available	299	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	300	# endif
46	#endif	301	#endif
47		302	#ifndef MAP_HUGETLB
48	/* number of seconds after which idle threads exit */	303	# 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	304	#endif
		305	#ifndef MAP_LOCKED
		306	# define MAP_LOCKED 0
79	#endif	307	#endif
		308	#ifndef MAP_NORESERVE
		309	# define MAP_NORESERVE 0
		310	#endif
		311	#ifndef MAP_POPULATE
		312	# define MAP_POPULATE 0
		313	#endif
		314	#ifndef MAP_NONBLOCK
		315	# define MAP_NONBLOCK 0
		316	#endif
80		317
81	/* buffer size for various temporary buffers */	318	#ifndef makedev
82	#define AIO_BUFSIZE 65536	319	# define makedev(maj,min) (((maj) << 8) | (min))
		320	#endif
		321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
83		327
84	#define dBUF \	328	#ifndef PAGESIZE
85	char *aio_buf; \	329	# define PAGESIZE sysconf (_SC_PAGESIZE)
86	LOCK (wrklock); \	330	#endif
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91		331
92	enum {	332	enum {
93	REQ_QUIT,	333	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	};	334	};
105		335
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	Stat_t *statdata;
117	off_t offs;
118	size_t size;
119	ssize_t result;
120
121	STRLEN stroffset;
122	int type;
123	int int1, int2;
124	int errorno;
125	mode_t mode; /* open */
126
127	unsigned char flags;
128	unsigned char pri;
129
130	SV *self; /* the perl counterpart of this request, if any */
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132	} aio_cb;
133
134	enum {
135	FLAG_CANCELLED = 0x01,
136	FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */
137	};
138
139	typedef aio_cb *aio_req;	336	typedef eio_req *aio_req;
140	typedef aio_cb *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
141		339
142	enum {	340	static SV *on_next_submit;
143	PRI_MIN = -4,	341	static int next_pri = EIO_PRI_DEFAULT;
144	PRI_MAX = 4,	342	static int max_outstanding;
145		343
146	DEFAULT_PRI = 0,	344	static s_epipe respipe;
147	PRI_BIAS = -PRI_MIN,
148	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149	};
150		345
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);	346	static void req_destroy (aio_req req);
325	static void req_cancel (aio_req req);	347	static void req_cancel (aio_req req);
326		348
		349	static void
		350	want_poll (void)
		351	{
		352	/* write a dummy byte to the pipe so fh becomes ready */
		353	s_epipe_signal (&respipe);
		354	}
		355
		356	static void
		357	done_poll (void)
		358	{
		359	/* read any signals sent by the worker threads */
		360	s_epipe_drain (&respipe);
		361	}
		362
327	/* must be called at most once */	363	/* must be called at most once */
328	static SV *req_sv (aio_req req, const char *klass)	364	static SV *
		365	req_sv (aio_req req, HV *stash)
329	{	366	{
330	if (!req->self)	367	if (!req->self)
331	{	368	{
332	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
333	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
334	}	371	}
335		372
336	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
337	}	374	}
338		375
339	static aio_req SvAIO_REQ (SV *sv)	376	static SV *
		377	newSVaio_wd (aio_wd wd)
		378	{
		379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
340	{	384	{
341	MAGIC *mg;	385	MAGIC *mg;
342		386
343	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	387	if (!SvROK (sv)
		388	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		389	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		390	&& SvSTASH (SvRV (sv)) != aio_req_stash
		391	&& !sv_derived_from (sv, "IO::AIO::REQ")))
344	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
345		393
346	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
347		395
348	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
349	}	397	}
350		398
		399	static aio_wd
		400	SvAIO_WD (SV *sv)
		401	{
		402	if (!SvROK (sv)
		403	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		404	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		405	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		406
		407	return (aio_wd)(long)SvIVX (SvRV (sv));
		408	}
		409
		410	static void
351	static void aio_grp_feed (aio_req grp)	411	aio_grp_feed (aio_req grp)
352	{	412	{
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	413	if (grp->sv2 && SvOK (grp->sv2))
354	{	414	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	415	dSP;
360		416
361	ENTER;	417	ENTER;
362	SAVETMPS;	418	SAVETMPS;
363	PUSHMARK (SP);	419	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	420	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	421	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	422	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	423	SPAGAIN;
368	FREETMPS;	424	FREETMPS;
369	LEAVE;	425	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	}	426	}
380	}	427	}
381		428
382	static void aio_grp_dec (aio_req grp)	429	static void
		430	req_submit (eio_req *req)
383	{	431	{
384	--grp->size;	432	eio_submit (req);
385		433
386	/* call feeder, if applicable */	434	if (expect_false (on_next_submit))
387	aio_grp_feed (grp);
388
389	/* finish, if done */
390	if (!grp->size && grp->int1)
391	{	435	{
392	req_invoke (grp);	436	dSP;
393	req_free (grp);	437	SV *cb = sv_2mortal (on_next_submit);
		438
		439	on_next_submit = 0;
		440
		441	PUSHMARK (SP);
		442	PUTBACK;
		443	call_sv (cb, G_DISCARD | G_EVAL);
394	}	444	}
395	}	445	}
396		446
		447	static int
397	static void req_invoke (aio_req req)	448	req_invoke (eio_req *req)
398	{	449	{
399	dSP;
400
401	if (req->flags & FLAG_DATA_RO_OFF)	450	if (req->flags & FLAG_SV2_RO_OFF)
402	SvREADONLY_off (req->sv1);	451	SvREADONLY_off (req->sv2);
403		452
404	if (req->statdata)	453	if (!EIO_CANCELLED (req) && req->callback)
405	{	454	{
406	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	455	dSP;
407	PL_laststatval = req->result;	456	static SV *sv_result_cache; /* caches the result integer SV */
408	PL_statcache = *(req->statdata);	457	SV *sv_result;
409	}
410		458
411	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412	{
413	ENTER;	459	ENTER;
414	SAVETMPS;	460	SAVETMPS;
415	PUSHMARK (SP);	461	PUSHMARK (SP);
416	EXTEND (SP, 1);	462	EXTEND (SP, 1);
417		463
		464	/* do not recreate the result IV from scratch each time */
		465	if (expect_true (sv_result_cache))
		466	{
		467	sv_result = sv_result_cache; sv_result_cache = 0;
		468	SvIV_set (sv_result, req->result);
		469	SvIOK_only (sv_result);
		470	}
		471	else
		472	{
		473	sv_result = newSViv (req->result);
		474	SvREADONLY_on (sv_result);
		475	}
		476
418	switch (req->type)	477	switch (req->type)
419	{	478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
420	case REQ_READDIR:	483	case EIO_READDIR:
421	{	484	{
422	SV *rv = &PL_sv_undef;	485	SV *rv = &PL_sv_undef;
423		486
424	if (req->result >= 0)	487	if (req->result >= 0)
425	{	488	{
426	int i;	489	int i;
427	char *buf = req->ptr2;	490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428	AV *av = newAV ();	492	AV *av = newAV ();
429		493
430	av_extend (av, req->result - 1);	494	av_extend (av, req->result - 1);
431		495
432	for (i = 0; i < req->result; ++i)	496	for (i = 0; i < req->result; ++i)
433	{	497	{
434	SV *sv = newSVpv (buf, 0);	498	if (req->int1 & EIO_READDIR_DENTS)
		499	{
		500	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435		501
		502	if (req->int1 & EIO_READDIR_CUSTOM2)
		503	{
		504	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		505	AV *avent = newAV ();
		506
		507	av_extend (avent, 2);
		508
		509	if (!sv_type [ent->type])
		510	{
		511	sv_type [ent->type] = newSViv (ent->type);
		512	SvREADONLY_on (sv_type [ent->type]);
		513	}
		514
		515	av_store (avent, 0, namesv);
		516	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		517	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		518
		519	av_store (av, i, newRV_noinc ((SV *)avent));
		520	}
		521	else
436	av_store (av, i, sv);	522	av_store (av, i, namesv);
		523
		524	++ent;
		525	}
		526	else
		527	{
		528	SV *name = newSVpv (names, 0);
		529	av_store (av, i, name);
437	buf += SvCUR (sv) + 1;	530	names += SvCUR (name) + 1;
		531	}
438	}	532	}
439		533
440	rv = sv_2mortal (newRV_noinc ((SV *)av));	534	rv = sv_2mortal (newRV_noinc ((SV *)av));
441	}	535	}
442		536
443	PUSHs (rv);	537	PUSHs (rv);
		538
		539	if (req->int1 & EIO_READDIR_CUSTOM1)
		540	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
444	}	541	}
445	break;	542	break;
446		543
447	case REQ_OPEN:	544	case EIO_OPEN:
448	{	545	{
449	/* convert fd to fh */	546	/* convert fd to fh */
450	SV *fh;	547	SV *fh = &PL_sv_undef;
451		548
452	PUSHs (sv_2mortal (newSViv (req->result)));	549	if (req->result >= 0)
453	PUTBACK;	550	{
454	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	551	GV *gv = (GV *)sv_newmortal ();
455	SPAGAIN;	552	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		553	char sym [64];
		554	int symlen;
		555
		556	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		557	gv_init (gv, aio_stash, sym, symlen, 0);
456		558
457	fh = SvREFCNT_inc (POPs);	559	symlen = snprintf (
		560	sym,
		561	sizeof (sym),
		562	"%s&=%d",
		563	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		564	(int)req->result
		565	);
458		566
		567	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		568	fh = (SV *)gv;
		569	}
		570
459	PUSHMARK (SP);	571	PUSHs (fh);
460	XPUSHs (sv_2mortal (fh));
461	}	572	}
462	break;	573	break;
463		574
		575	case EIO_STATVFS:
		576	case EIO_FSTATVFS:
		577	{
		578	SV *rv = &PL_sv_undef;
		579
		580	#ifndef _WIN32
		581	if (req->result >= 0)
		582	{
		583	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		584	HV *hv = newHV ();
		585
		586	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		587
		588	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		589	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		590	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		591	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		592	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		593	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		594	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		595	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		596	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		597	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		598	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		599	}
		600	#endif
		601
		602	PUSHs (rv);
		603	}
		604
		605	break;
		606
464	case REQ_GROUP:	607	case EIO_GROUP:
465	req->int1 = 2; /* mark group as finished */	608	req->int1 = 2; /* mark group as finished */
466		609
467	if (req->sv1)	610	if (req->sv1)
468	{	611	{
469	int i;	612	int i;
…		…
473	for (i = 0; i <= AvFILL (av); ++i)	616	for (i = 0; i <= AvFILL (av); ++i)
474	PUSHs (*av_fetch (av, i, 0));	617	PUSHs (*av_fetch (av, i, 0));
475	}	618	}
476	break;	619	break;
477		620
478	case REQ_NOP:	621	case EIO_NOP:
479	case REQ_BUSY:	622	case EIO_BUSY:
480	break;	623	break;
481		624
482	case REQ_READLINK:	625	case EIO_READLINK:
		626	case EIO_REALPATH:
483	if (req->result > 0)	627	if (req->result > 0)
484	{	628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
485	SvCUR_set (req->sv1, req->result);
486	*SvEND (req->sv1) = 0;
487	PUSHs (req->sv1);
488	}
489	break;	629	break;
490		630
		631	case EIO_STAT:
		632	case EIO_LSTAT:
		633	case EIO_FSTAT:
		634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
		636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		639
		640	PUSHs (sv_result);
		641	break;
		642
		643	case EIO_SEEK:
		644	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		645	break;
		646
491	case REQ_READ:	647	case EIO_READ:
		648	{
492	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	649	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
493	*SvEND (req->sv1) = 0;	650	*SvEND (req->sv2) = 0;
494	/* fall through */	651	SvPOK_only (req->sv2);
		652	SvSETMAGIC (req->sv2);
		653	PUSHs (sv_result);
		654	}
		655	break;
		656
		657	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		658	if (req->result > 0)
		659	SvIV_set (sv_result, 0);
		660	/* FALLTHROUGH */
		661
495	default:	662	default:
496	PUSHs (sv_2mortal (newSViv (req->result)));	663	PUSHs (sv_result);
497	break;	664	break;
498	}	665	}
499		666
500	errno = req->errorno;	667	errno = req->errorno;
501		668
502	PUTBACK;	669	PUTBACK;
503	call_sv (req->callback, G_VOID | G_EVAL);	670	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504	SPAGAIN;	671	SPAGAIN;
		672
		673	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		674	SvREFCNT_dec (sv_result);
		675	else
		676	sv_result_cache = sv_result;
505		677
506	FREETMPS;	678	FREETMPS;
507	LEAVE;	679	LEAVE;
		680
		681	PUTBACK;
508	}	682	}
509		683
510	if (req->grp)	684	return !!SvTRUE (ERRSV);
511	{
512	aio_req grp = req->grp;
513
514	/* unlink request */
515	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518	if (grp->grp_first == req)
519	grp->grp_first = req->grp_next;
520
521	aio_grp_dec (grp);
522	}
523
524	if (SvTRUE (ERRSV))
525	{
526	req_free (req);
527	croak (0);
528	}
529	}	685	}
530		686
531	static void req_free (aio_req req)	687	static void
		688	req_destroy (aio_req req)
532	{	689	{
533	if (req->self)	690	if (req->self)
534	{	691	{
535	sv_unmagic (req->self, PERL_MAGIC_ext);	692	sv_unmagic (req->self, PERL_MAGIC_ext);
536	SvREFCNT_dec (req->self);	693	SvREFCNT_dec (req->self);
537	}	694	}
538		695
539	SvREFCNT_dec (req->fh);
540	SvREFCNT_dec (req->sv1);	696	SvREFCNT_dec (req->sv1);
541	SvREFCNT_dec (req->sv2);	697	SvREFCNT_dec (req->sv2);
		698	SvREFCNT_dec (req->sv3);
		699	SvREFCNT_dec (req->sv4);
542	SvREFCNT_dec (req->callback);	700	SvREFCNT_dec (req->callback);
543	Safefree (req->statdata);
544		701
545	if (req->type == REQ_READDIR)
546	free (req->ptr2);
547
548	Safefree (req);	702	free (req);
549	}	703	}
550		704
		705	static void
551	static void req_cancel_subs (aio_req grp)	706	req_cancel_subs (aio_req grp)
552	{	707	{
553	aio_req sub;
554
555	if (grp->type != REQ_GROUP)	708	if (grp->type != EIO_GROUP)
556	return;	709	return;
557		710
558	SvREFCNT_dec (grp->sv2);	711	SvREFCNT_dec (grp->sv2);
559	grp->sv2 = 0;	712	grp->sv2 = 0;
560		713
561	for (sub = grp->grp_first; sub; sub = sub->grp_next)	714	eio_grp_cancel (grp);
562	req_cancel (sub);
563	}	715	}
564		716
565	static void req_cancel (aio_req req)	717	static void ecb_cold
		718	create_respipe (void)
566	{	719	{
567	req->flags |= FLAG_CANCELLED;	720	if (s_epipe_renew (&respipe))
568		721	croak ("IO::AIO: unable to initialize result pipe");
569	req_cancel_subs (req);
570	}	722	}
571		723
572	static void *aio_proc(void *arg);	724	static void
573		725	poll_wait (void)
574	static void start_thread (void)
575	{	726	{
576	sigset_t fullsigset, oldsigset;
577	pthread_attr_t attr;
578
579	worker *wrk = calloc (1, sizeof (worker));
580
581	if (!wrk)
582	croak ("unable to allocate worker thread data");
583
584	pthread_attr_init (&attr);
585	pthread_attr_setstacksize (&attr, STACKSIZE);
586	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587	#ifdef PTHREAD_SCOPE_PROCESS
588	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589	#endif
590
591	sigfillset (&fullsigset);
592
593	LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
597	{
598	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;
600	wrk_first.next->prev = wrk;
601	wrk_first.next = wrk;
602	++started;
603	}
604	else
605	free (wrk);
606
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);
609	}
610
611	static void maybe_start_thread ()
612	{
613	if (get_nthreads () >= wanted)
614	return;
615
616	/* todo: maybe use idle here, but might be less exact */
617	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618	return;
619
620	start_thread ();
621	}
622
623	static void req_send (aio_req req)
624	{
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632
633	maybe_start_thread ();
634	}
635
636	static void end_thread (void)
637	{
638	aio_req req;
639
640	Newz (0, req, 1, aio_cb);
641
642	req->type = REQ_QUIT;
643	req->pri = PRI_MAX + PRI_BIAS;
644
645	LOCK (reqlock);
646	reqq_push (&req_queue, req);
647	pthread_cond_signal (&reqwait);
648	UNLOCK (reqlock);
649
650	LOCK (wrklock);
651	--started;
652	UNLOCK (wrklock);
653	}
654
655	static void set_max_idle (int nthreads)
656	{
657	if (WORDACCESS_UNSAFE) LOCK (reqlock);
658	max_idle = nthreads <= 0 ? 1 : nthreads;
659	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660	}
661
662	static void min_parallel (int nthreads)
663	{
664	if (wanted < nthreads)
665	wanted = nthreads;
666	}
667
668	static void max_parallel (int nthreads)
669	{
670	if (wanted > nthreads)
671	wanted = nthreads;
672
673	while (started > wanted)
674	end_thread ();
675	}
676
677	static void poll_wait ()
678	{
679	fd_set rfd;
680
681	while (nreqs)	727	while (eio_nreqs ())
682	{	728	{
683	int size;	729	int size;
684	if (WORDACCESS_UNSAFE) LOCK (reslock);	730
		731	X_LOCK (reslock);
685	size = res_queue.size;	732	size = res_queue.size;
686	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	733	X_UNLOCK (reslock);
687		734
688	if (size)	735	if (size)
689	return;	736	return;
690		737
691	maybe_start_thread ();	738	etp_maybe_start_thread ();
692		739
693	FD_ZERO(&rfd);	740	s_epipe_wait (&respipe);
694	FD_SET(respipe [0], &rfd);
695
696	select (respipe [0] + 1, &rfd, 0, 0, 0);
697	}	741	}
698	}	742	}
699		743
700	static int poll_cb ()	744	static int
		745	poll_cb (void)
701	{	746	{
702	dSP;
703	int count = 0;
704	int maxreqs = max_poll_reqs;
705	int do_croak = 0;
706	struct timeval tv_start, tv_now;
707	aio_req req;
708
709	if (max_poll_time)
710	gettimeofday (&tv_start, 0);
711
712	for (;;)	747	for (;;)
713	{	748	{
714	for (;;)	749	int res = eio_poll ();
		750
		751	if (res > 0)
		752	croak (0);
		753
		754	if (!max_outstanding || max_outstanding > eio_nreqs ())
		755	return res;
		756
		757	poll_wait ();
		758	}
		759	}
		760
		761	static void ecb_cold
		762	reinit (void)
		763	{
		764	create_respipe ();
		765
		766	if (eio_init (want_poll, done_poll) < 0)
		767	croak ("IO::AIO: unable to initialise eio library");
		768	}
		769
		770	/*****************************************************************************/
		771
		772	#if !_POSIX_MAPPED_FILES
		773	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		774	# define munmap(addr,length) (errno = ENOSYS, -1)
		775	#endif
		776
		777	#if !_POSIX_MEMORY_PROTECTION
		778	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		779	# define PROT_NONE 0
		780	# define PROT_WRITE 0
		781	# define MAP_PRIVATE 0
		782	# define MAP_SHARED 0
		783	# define MAP_FIXED 0
		784	#endif
		785
		786	#define MMAP_MAGIC PERL_MAGIC_ext
		787
		788	static int ecb_cold
		789	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		790	{
		791	int old_errno = errno;
		792	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		793	errno = old_errno;
		794
		795	mg->mg_obj = 0; /* just in case */
		796
		797	SvREADONLY_off (sv);
		798
		799	if (SvPVX (sv) != mg->mg_ptr)
		800	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		801
		802	SvCUR_set (sv, 0);
		803	SvPVX (sv) = 0;
		804	SvOK_off (sv);
		805
		806	return 0;
		807	}
		808
		809	static MGVTBL mmap_vtbl = {
		810	0, 0, 0, 0, mmap_free
		811	};
		812
		813	/*****************************************************************************/
		814
		815	static SV *
		816	get_cb (SV *cb_sv)
		817	{
		818	SvGETMAGIC (cb_sv);
		819	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		820	}
		821
		822	static aio_req ecb_noinline
		823	dreq (SV *callback)
		824	{
		825	SV *cb_cv;
		826	aio_req req;
		827	int req_pri = next_pri;
		828	next_pri = EIO_PRI_DEFAULT;
		829
		830	cb_cv = get_cb (callback);
		831
		832	req = calloc (sizeof (*req), 1);
		833	if (!req)
		834	croak ("out of memory during eio_req allocation");
		835
		836	req->callback = SvREFCNT_inc (cb_cv);
		837	req->pri = req_pri;
		838
		839	return req;
		840	}
		841
		842	#define dREQ \
		843	aio_req req = dreq (callback); \
		844
		845	#define REQ_SEND \
		846	PUTBACK; \
		847	req_submit (req); \
		848	SPAGAIN; \
		849	\
		850	if (GIMME_V != G_VOID) \
		851	XPUSHs (req_sv (req, aio_req_stash));
		852
		853	ecb_inline void
		854	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		855	{
		856	if (expect_false (SvROK (path)))
		857	{
		858	SV *rv = SvRV (path);
		859	SV *wdob;
		860
		861	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715	{	862	{
716	maybe_start_thread ();	863	path = AvARRAY (rv)[1];
		864	wdob = AvARRAY (rv)[0];
717		865
718	LOCK (reslock);	866	if (SvOK (wdob))
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{	867	{
723	--npending;	868	*wd = SvAIO_WD (wdob);
724		869	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [32];
729	while (read (respipe [0], buf, 32) == 32)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}	870	}
746	else	871	else
747	{	872	*wd = EIO_INVALID_WD;
748	req_invoke (req);
749
750	count++;
751	}
752
753	req_free (req);
754
755	if (maxreqs && !--maxreqs)
756	break;
757
758	if (max_poll_time)
759	{
760	gettimeofday (&tv_now, 0);
761
762	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763	break;
764	}
765	}	873	}
		874	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		875	{
		876	*wd = (aio_wd)(long)SvIVX (rv);
		877	*wdsv = SvREFCNT_inc_NN (rv);
		878	*ptr = ".";
		879	return; /* path set to "." */
		880	}
		881	else
		882	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		883	}
766		884
767	if (nreqs <= max_outstanding)	885	*pathsv = newSVsv (path);
		886	*ptr = SvPVbyte_nolen (*pathsv);
		887	}
		888
		889	static void ecb_noinline
		890	req_set_path1 (aio_req req, SV *path)
		891	{
		892	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		893	}
		894
		895	static void ecb_noinline
		896	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		897	{
		898	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		899
		900	switch (SvTYPE (rv))
		901	{
		902	case SVt_PVIO:
		903	case SVt_PVLV:
		904	case SVt_PVGV:
		905	req->type = type_fh;
		906	req->sv1 = newSVsv (fh_or_path);
		907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
768	break;	908	break;
769		909
770	poll_wait ();	910	default:
771		911	req->type = type_path;
772	++maxreqs;	912	req_set_path1 (req, fh_or_path);
		913	break;
773	}	914	}
774
775	return count;
776	}	915	}
777		916
778	static void create_pipe ()	917	XS(boot_IO__AIO) ecb_cold;
779	{
780	if (pipe (respipe))
781	croak ("unable to initialize result pipe");
782		918
783	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784	croak ("cannot set result pipe to nonblocking mode");
785
786	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787	croak ("cannot set result pipe to nonblocking mode");
788	}
789
790	/*****************************************************************************/
791	/* work around various missing functions */
792
793	#if !HAVE_PREADWRITE
794	# define pread aio_pread
795	# define pwrite aio_pwrite
796
797	/*
798	* make our pread/pwrite safe against themselves, but not against
799	* normal read/write by using a mutex. slows down execution a lot,
800	* but that's your problem, not mine.
801	*/
802	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805	{
806	ssize_t res;
807	off_t ooffset;
808
809	LOCK (preadwritelock);
810	ooffset = lseek (fd, 0, SEEK_CUR);
811	lseek (fd, offset, SEEK_SET);
812	res = read (fd, buf, count);
813	lseek (fd, ooffset, SEEK_SET);
814	UNLOCK (preadwritelock);
815
816	return res;
817	}
818
819	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
820	{
821	ssize_t res;
822	off_t ooffset;
823
824	LOCK (preadwritelock);
825	ooffset = lseek (fd, 0, SEEK_CUR);
826	lseek (fd, offset, SEEK_SET);
827	res = write (fd, buf, count);
828	lseek (fd, offset, SEEK_SET);
829	UNLOCK (preadwritelock);
830
831	return res;
832	}
833	#endif
834
835	#if !HAVE_FDATASYNC
836	# define fdatasync fsync
837	#endif
838
839	#if !HAVE_READAHEAD
840	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841
842	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
843	{
844	dBUF;
845
846	while (count > 0)
847	{
848	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849
850	pread (fd, aio_buf, len, offset);
851	offset += len;
852	count -= len;
853	}
854
855	errno = 0;
856	}
857
858	#endif
859
860	#if !HAVE_READDIR_R
861	# define readdir_r aio_readdir_r
862
863	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866	{
867	struct dirent *e;
868	int errorno;
869
870	LOCK (readdirlock);
871
872	e = readdir (dirp);
873	errorno = errno;
874
875	if (e)
876	{
877	*res = ent;
878	strcpy (ent->d_name, e->d_name);
879	}
880	else
881	*res = 0;
882
883	UNLOCK (readdirlock);
884
885	errno = errorno;
886	return e ? 0 : -1;
887	}
888	#endif
889
890	/* sendfile always needs emulation */
891	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
892	{
893	ssize_t res;
894
895	if (!count)
896	return 0;
897
898	#if HAVE_SENDFILE
899	# if __linux
900	res = sendfile (ofd, ifd, &offset, count);
901
902	# elif __freebsd
903	/*
904	* Of course, the freebsd sendfile is a dire hack with no thoughts
905	* wasted on making it similar to other I/O functions.
906	*/
907	{
908	off_t sbytes;
909	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910
911	if (res < 0 && sbytes)
912	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
913	res = sbytes;
914	}
915
916	# elif __hpux
917	res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919	# elif __solaris
920	{
921	struct sendfilevec vec;
922	size_t sbytes;
923
924	vec.sfv_fd = ifd;
925	vec.sfv_flag = 0;
926	vec.sfv_off = offset;
927	vec.sfv_len = count;
928
929	res = sendfilev (ofd, &vec, 1, &sbytes);
930
931	if (res < 0 && sbytes)
932	res = sbytes;
933	}
934
935	# endif
936	#else
937	res = -1;
938	errno = ENOSYS;
939	#endif
940
941	if (res < 0
942	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
943	#if __solaris
944	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
945	#endif
946	)
947	)
948	{
949	/* emulate sendfile. this is a major pain in the ass */
950	dBUF;
951
952	res = 0;
953
954	while (count)
955	{
956	ssize_t cnt;
957
958	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
959
960	if (cnt <= 0)
961	{
962	if (cnt && !res) res = -1;
963	break;
964	}
965
966	cnt = write (ofd, aio_buf, cnt);
967
968	if (cnt <= 0)
969	{
970	if (cnt && !res) res = -1;
971	break;
972	}
973
974	offset += cnt;
975	res += cnt;
976	count -= cnt;
977	}
978	}
979
980	return res;
981	}
982
983	/* read a full directory */
984	static void scandir_ (aio_req req, worker *self)
985	{
986	DIR *dirp;
987	union
988	{
989	struct dirent d;
990	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991	} *u;
992	struct dirent *entp;
993	char *name, *names;
994	int memlen = 4096;
995	int memofs = 0;
996	int res = 0;
997	int errorno;
998
999	LOCK (wrklock);
1000	self->dirp = dirp = opendir (req->ptr1);
1001	self->dbuf = u = malloc (sizeof (*u));
1002	req->ptr2 = names = malloc (memlen);
1003	UNLOCK (wrklock);
1004
1005	if (dirp && u && names)
1006	for (;;)
1007	{
1008	errno = 0;
1009	readdir_r (dirp, &u->d, &entp);
1010
1011	if (!entp)
1012	break;
1013
1014	name = entp->d_name;
1015
1016	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017	{
1018	int len = strlen (name) + 1;
1019
1020	res++;
1021
1022	while (memofs + len > memlen)
1023	{
1024	memlen *= 2;
1025	LOCK (wrklock);
1026	req->ptr2 = names = realloc (names, memlen);
1027	UNLOCK (wrklock);
1028
1029	if (!names)
1030	break;
1031	}
1032
1033	memcpy (names + memofs, name, len);
1034	memofs += len;
1035	}
1036	}
1037
1038	if (errno)
1039	res = -1;
1040
1041	req->result = res;
1042	}
1043
1044	/*****************************************************************************/
1045
1046	static void *aio_proc (void *thr_arg)
1047	{
1048	aio_req req;
1049	struct timespec ts;
1050	worker *self = (worker *)thr_arg;
1051
1052	/* try to distribute timeouts somewhat evenly */
1053	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054	* (1000000000UL / 1024UL);
1055
1056	for (;;)
1057	{
1058	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060	LOCK (reqlock);
1061
1062	for (;;)
1063	{
1064	self->req = req = reqq_shift (&req_queue);
1065
1066	if (req)
1067	break;
1068
1069	++idle;
1070
1071	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072	== ETIMEDOUT)
1073	{
1074	if (idle > max_idle)
1075	{
1076	--idle;
1077	UNLOCK (reqlock);
1078	LOCK (wrklock);
1079	--started;
1080	UNLOCK (wrklock);
1081	goto quit;
1082	}
1083
1084	/* we are allowed to idle, so do so without any timeout */
1085	pthread_cond_wait (&reqwait, &reqlock);
1086	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087	}
1088
1089	--idle;
1090	}
1091
1092	--nready;
1093
1094	UNLOCK (reqlock);
1095
1096	errno = 0; /* strictly unnecessary */
1097
1098	if (!(req->flags & FLAG_CANCELLED))
1099	switch (req->type)
1100	{
1101	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107	case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108	case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109	case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112	case REQ_CLOSE: req->result = close (req->int1); break;
1113	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122	case REQ_FSYNC: req->result = fsync (req->int1); break;
1123	case REQ_READDIR: scandir_ (req, self); break;
1124
1125	case REQ_BUSY:
1126	{
1127	struct timeval tv;
1128
1129	tv.tv_sec = req->int1;
1130	tv.tv_usec = req->int2;
1131
1132	req->result = select (0, 0, 0, 0, &tv);
1133	}
1134
1135	case REQ_GROUP:
1136	case REQ_NOP:
1137	break;
1138
1139	case REQ_QUIT:
1140	goto quit;
1141
1142	default:
1143	req->result = ENOSYS;
1144	break;
1145	}
1146
1147	req->errorno = errno;
1148
1149	LOCK (reslock);
1150
1151	++npending;
1152
1153	if (!reqq_push (&res_queue, req))
1154	/* write a dummy byte to the pipe so fh becomes ready */
1155	write (respipe [1], &respipe, 1);
1156
1157	self->req = 0;
1158	worker_clear (self);
1159
1160	UNLOCK (reslock);
1161	}
1162
1163	quit:
1164	LOCK (wrklock);
1165	worker_free (self);
1166	UNLOCK (wrklock);
1167
1168	return 0;
1169	}
1170
1171	/*****************************************************************************/
1172
1173	static void atfork_prepare (void)
1174	{
1175	LOCK (wrklock);
1176	LOCK (reqlock);
1177	LOCK (reslock);
1178	#if !HAVE_PREADWRITE
1179	LOCK (preadwritelock);
1180	#endif
1181	#if !HAVE_READDIR_R
1182	LOCK (readdirlock);
1183	#endif
1184	}
1185
1186	static void atfork_parent (void)
1187	{
1188	#if !HAVE_READDIR_R
1189	UNLOCK (readdirlock);
1190	#endif
1191	#if !HAVE_PREADWRITE
1192	UNLOCK (preadwritelock);
1193	#endif
1194	UNLOCK (reslock);
1195	UNLOCK (reqlock);
1196	UNLOCK (wrklock);
1197	}
1198
1199	static void atfork_child (void)
1200	{
1201	aio_req prv;
1202
1203	while (prv = reqq_shift (&req_queue))
1204	req_free (prv);
1205
1206	while (prv = reqq_shift (&res_queue))
1207	req_free (prv);
1208
1209	while (wrk_first.next != &wrk_first)
1210	{
1211	worker *wrk = wrk_first.next;
1212
1213	if (wrk->req)
1214	req_free (wrk->req);
1215
1216	worker_clear (wrk);
1217	worker_free (wrk);
1218	}
1219
1220	started = 0;
1221	idle = 0;
1222	nreqs = 0;
1223	nready = 0;
1224	npending = 0;
1225
1226	close (respipe [0]);
1227	close (respipe [1]);
1228	create_pipe ();
1229
1230	atfork_parent ();
1231	}
1232
1233	#define dREQ \
1234	aio_req req; \
1235	int req_pri = next_pri; \
1236	next_pri = DEFAULT_PRI + PRI_BIAS; \
1237	\
1238	if (SvOK (callback) && !SvROK (callback)) \
1239	croak ("callback must be undef or of reference type"); \
1240	\
1241	Newz (0, req, 1, aio_cb); \
1242	if (!req) \
1243	croak ("out of memory during aio_req allocation"); \
1244	\
1245	req->callback = newSVsv (callback); \
1246	req->pri = req_pri
1247
1248	#define REQ_SEND \
1249	req_send (req); \
1250	\
1251	if (GIMME_V != G_VOID) \
1252	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1253
1254	MODULE = IO::AIO PACKAGE = IO::AIO	919	MODULE = IO::AIO PACKAGE = IO::AIO
1255		920
1256	PROTOTYPES: ENABLE	921	PROTOTYPES: ENABLE
1257		922
1258	BOOT:	923	BOOT:
1259	{	924	{
		925	static const struct {
		926	const char *name;
		927	IV iv;
		928	} *civ, const_iv[] = {
		929	# define const_niv(name, value) { # name, (IV) value },
		930	# define const_iv(name) { # name, (IV) name },
		931	# define const_eio(name) { # name, (IV) EIO_ ## name },
		932	const_iv (EXDEV)
		933	const_iv (ENOSYS)
		934	const_iv (O_RDONLY)
		935	const_iv (O_WRONLY)
		936	const_iv (O_RDWR)
		937	const_iv (O_CREAT)
		938	const_iv (O_TRUNC)
		939	const_iv (O_EXCL)
		940	const_iv (O_APPEND)
		941
		942	const_iv (O_ASYNC)
		943	const_iv (O_DIRECT)
		944	const_iv (O_NOATIME)
		945
		946	const_iv (O_CLOEXEC)
		947	const_iv (O_NOCTTY)
		948	const_iv (O_NOFOLLOW)
		949	const_iv (O_NONBLOCK)
		950	const_iv (O_EXEC)
		951	const_iv (O_SEARCH)
		952	const_iv (O_DIRECTORY)
		953	const_iv (O_DSYNC)
		954	const_iv (O_RSYNC)
		955	const_iv (O_SYNC)
		956	const_iv (O_TTY_INIT)
		957
		958	const_iv (S_IFIFO)
		959	const_iv (S_IFCHR)
		960	const_iv (S_IFBLK)
		961	const_iv (S_IFLNK)
		962	const_iv (S_IFREG)
		963	const_iv (S_IFDIR)
		964	const_iv (S_IFWHT)
		965	const_iv (S_IFSOCK)
		966	const_iv (S_IFMT)
		967
		968	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		969	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		970	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		971	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		972	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		973	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		974
		975	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		976	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		977	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		978	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		979	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		980
		981	const_iv (ST_RDONLY)
		982	const_iv (ST_NOSUID)
		983	const_iv (ST_NODEV)
		984	const_iv (ST_NOEXEC)
		985	const_iv (ST_SYNCHRONOUS)
		986	const_iv (ST_MANDLOCK)
		987	const_iv (ST_WRITE)
		988	const_iv (ST_APPEND)
		989	const_iv (ST_IMMUTABLE)
		990	const_iv (ST_NOATIME)
		991	const_iv (ST_NODIRATIME)
		992	const_iv (ST_RELATIME)
		993
		994	const_iv (PROT_NONE)
		995	const_iv (PROT_EXEC)
		996	const_iv (PROT_READ)
		997	const_iv (PROT_WRITE)
		998
		999	/*const_iv (MAP_FIXED)*/
		1000	const_iv (MAP_PRIVATE)
		1001	const_iv (MAP_SHARED)
		1002	const_iv (MAP_ANONYMOUS)
		1003
		1004	/* linuxish */
		1005	const_iv (MAP_HUGETLB)
		1006	const_iv (MAP_LOCKED)
		1007	const_iv (MAP_NORESERVE)
		1008	const_iv (MAP_POPULATE)
		1009	const_iv (MAP_NONBLOCK)
		1010
		1011	const_eio (SEEK_SET)
		1012	const_eio (SEEK_CUR)
		1013	const_eio (SEEK_END)
		1014
		1015	const_eio (MCL_FUTURE)
		1016	const_eio (MCL_CURRENT)
		1017
		1018	const_eio (MS_ASYNC)
		1019	const_eio (MS_INVALIDATE)
		1020	const_eio (MS_SYNC)
		1021
		1022	const_eio (MT_MODIFY)
		1023
		1024	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1025	const_eio (SYNC_FILE_RANGE_WRITE)
		1026	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1027
		1028	const_eio (FALLOC_FL_KEEP_SIZE)
		1029
		1030	const_eio (READDIR_DENTS)
		1031	const_eio (READDIR_DIRS_FIRST)
		1032	const_eio (READDIR_STAT_ORDER)
		1033	const_eio (READDIR_FOUND_UNKNOWN)
		1034
		1035	const_eio (DT_UNKNOWN)
		1036	const_eio (DT_FIFO)
		1037	const_eio (DT_CHR)
		1038	const_eio (DT_DIR)
		1039	const_eio (DT_BLK)
		1040	const_eio (DT_REG)
		1041	const_eio (DT_LNK)
		1042	const_eio (DT_SOCK)
		1043	const_eio (DT_WHT)
		1044	};
		1045
1260	HV *stash = gv_stashpv ("IO::AIO", 1);	1046	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1047	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1048	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1049	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1261		1050
1262	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1051	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1263	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1052	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1264	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1267	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1268		1053
1269	create_pipe ();	1054	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1270	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1271	}
1272		1055
		1056	reinit ();
		1057	}
		1058
1273	void	1059	void
		1060	reinit ()
		1061	PROTOTYPE:
		1062
		1063	void
1274	max_poll_reqs (int nreqs)	1064	max_poll_reqs (unsigned int nreqs)
1275	PROTOTYPE: $	1065	PROTOTYPE: $
1276	CODE:	1066	CODE:
1277	max_poll_reqs = nreqs;	1067	eio_set_max_poll_reqs (nreqs);
1278		1068
1279	void	1069	void
1280	max_poll_time (double nseconds)	1070	max_poll_time (double nseconds)
1281	PROTOTYPE: $	1071	PROTOTYPE: $
1282	CODE:	1072	CODE:
1283	max_poll_time = nseconds * AIO_TICKS;	1073	eio_set_max_poll_time (nseconds);
1284		1074
1285	void	1075	void
1286	min_parallel (int nthreads)	1076	min_parallel (unsigned int nthreads)
1287	PROTOTYPE: $
1288
1289	void
1290	max_parallel (int nthreads)
1291	PROTOTYPE: $
1292
1293	void
1294	max_idle (int nthreads)
1295	PROTOTYPE: $	1077	PROTOTYPE: $
1296	CODE:	1078	CODE:
1297	set_max_idle (nthreads);	1079	eio_set_min_parallel (nthreads);
1298		1080
1299	int	1081	void
1300	max_outstanding (int maxreqs)	1082	max_parallel (unsigned int nthreads)
1301	PROTOTYPE: $	1083	PROTOTYPE: $
1302	CODE:	1084	CODE:
1303	RETVAL = max_outstanding;	1085	eio_set_max_parallel (nthreads);
		1086
		1087	void
		1088	max_idle (unsigned int nthreads)
		1089	PROTOTYPE: $
		1090	CODE:
		1091	eio_set_max_idle (nthreads);
		1092
		1093	void
		1094	idle_timeout (unsigned int seconds)
		1095	PROTOTYPE: $
		1096	CODE:
		1097	eio_set_idle_timeout (seconds);
		1098
		1099	void
		1100	max_outstanding (unsigned int maxreqs)
		1101	PROTOTYPE: $
		1102	CODE:
1304	max_outstanding = maxreqs;	1103	max_outstanding = maxreqs;
1305	OUTPUT:
1306	RETVAL
1307		1104
1308	void	1105	void
1309	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1106	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1310	SV * pathname
1311	int flags
1312	int mode
1313	SV * callback
1314	PROTOTYPE: $$$;$
1315	PPCODE:	1107	PPCODE:
1316	{	1108	{
1317	dREQ;	1109	dREQ;
1318		1110
		1111	req->type = EIO_WD_OPEN;
		1112	req_set_path1 (req, pathname);
		1113
		1114	REQ_SEND;
		1115	}
		1116
		1117	void
		1118	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1119	PPCODE:
		1120	{
		1121	dREQ;
		1122
1319	req->type = REQ_OPEN;	1123	req->type = EIO_OPEN;
1320	req->sv1 = newSVsv (pathname);	1124	req_set_path1 (req, pathname);
1321	req->ptr1 = SvPVbyte_nolen (pathname);
1322	req->int1 = flags;	1125	req->int1 = flags;
1323	req->mode = mode;	1126	req->int2 = mode;
1324		1127
1325	REQ_SEND;	1128	REQ_SEND;
1326	}	1129	}
1327		1130
1328	void	1131	void
1329	aio_close (fh,callback=&PL_sv_undef)	1132	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330	SV * fh
1331	SV * callback
1332	PROTOTYPE: $;$
1333	ALIAS:	1133	ALIAS:
1334	aio_close = REQ_CLOSE
1335	aio_fsync = REQ_FSYNC	1134	aio_fsync = EIO_FSYNC
1336	aio_fdatasync = REQ_FDATASYNC	1135	aio_fdatasync = EIO_FDATASYNC
		1136	aio_syncfs = EIO_SYNCFS
1337	PPCODE:	1137	PPCODE:
1338	{	1138	{
		1139	int fd = s_fileno_croak (fh, 0);
1339	dREQ;	1140	dREQ;
1340		1141
1341	req->type = ix;	1142	req->type = ix;
1342	req->fh = newSVsv (fh);	1143	req->sv1 = newSVsv (fh);
1343	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1144	req->int1 = fd;
1344		1145
1345	REQ_SEND (req);	1146	REQ_SEND;
1346	}	1147	}
1347		1148
1348	void	1149	void
		1150	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1151	PPCODE:
		1152	{
		1153	int fd = s_fileno_croak (fh, 0);
		1154	dREQ;
		1155
		1156	req->type = EIO_SYNC_FILE_RANGE;
		1157	req->sv1 = newSVsv (fh);
		1158	req->int1 = fd;
		1159	req->offs = offset;
		1160	req->size = nbytes;
		1161	req->int2 = flags;
		1162
		1163	REQ_SEND;
		1164	}
		1165
		1166	void
		1167	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1168	PPCODE:
		1169	{
		1170	int fd = s_fileno_croak (fh, 0);
		1171	dREQ;
		1172
		1173	req->type = EIO_FALLOCATE;
		1174	req->sv1 = newSVsv (fh);
		1175	req->int1 = fd;
		1176	req->int2 = mode;
		1177	req->offs = offset;
		1178	req->size = len;
		1179
		1180	REQ_SEND;
		1181	}
		1182
		1183	void
		1184	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1185	PPCODE:
		1186	{
		1187	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1188	int fd = s_fileno_croak (fh, 0);
		1189	dREQ;
		1190
		1191	if (expect_false (close_fd < 0))
		1192	{
		1193	int pipefd [2];
		1194
		1195	if (
		1196	#ifdef _WIN32
		1197	_pipe (pipefd, 1, _O_BINARY) < 0
		1198	#else
		1199	pipe (pipefd) < 0
		1200	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1201	#endif
		1202	|| close (pipefd [1]) < 0
		1203	)
		1204	abort (); /*D*/
		1205
		1206	close_fd = pipefd [0];
		1207	}
		1208
		1209	req->type = EIO_DUP2;
		1210	req->int1 = close_fd;
		1211	req->sv2 = newSVsv (fh);
		1212	req->int2 = fd;
		1213
		1214	REQ_SEND;
		1215	}
		1216
		1217	void
		1218	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1219	PPCODE:
		1220	{
		1221	STRLEN svlen;
		1222	int fd = s_fileno_croak (fh, 0);
		1223	dREQ;
		1224
		1225	req->type = EIO_SEEK;
		1226	req->sv1 = newSVsv (fh);
		1227	req->int1 = fd;
		1228	req->offs = SvVAL64 (offset);
		1229	req->int2 = whence;
		1230
		1231	REQ_SEND;
		1232	}
		1233
		1234	void
1349	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1235	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350	SV * fh
1351	UV offset
1352	UV length
1353	SV * data
1354	UV dataoffset
1355	SV * callback
1356	ALIAS:	1236	ALIAS:
1357	aio_read = REQ_READ	1237	aio_read = EIO_READ
1358	aio_write = REQ_WRITE	1238	aio_write = EIO_WRITE
1359	PROTOTYPE: $$$$$;$
1360	PPCODE:	1239	PPCODE:
1361	{	1240	{
1362	STRLEN svlen;	1241	STRLEN svlen;
		1242	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1363	char *svptr = SvPVbyte (data, svlen);	1243	char *svptr = SvPVbyte (data, svlen);
1364		1244	UV len = SvUV (length);
1365	SvUPGRADE (data, SVt_PV);
1366	SvPOK_on (data);
1367		1245
1368	if (dataoffset < 0)	1246	if (dataoffset < 0)
1369	dataoffset += svlen;	1247	dataoffset += svlen;
1370		1248
1371	if (dataoffset < 0 || dataoffset > svlen)	1249	if (dataoffset < 0 || dataoffset > svlen)
1372	croak ("data offset outside of string");	1250	croak ("dataoffset outside of data scalar");
1373		1251
1374	if (ix == REQ_WRITE)	1252	if (ix == EIO_WRITE)
1375	{	1253	{
1376	/* write: check length and adjust. */	1254	/* write: check length and adjust. */
1377	if (length < 0 || length + dataoffset > svlen)	1255	if (!SvOK (length) || len + dataoffset > svlen)
1378	length = svlen - dataoffset;	1256	len = svlen - dataoffset;
1379	}	1257	}
1380	else	1258	else
1381	{	1259	{
1382	/* read: grow scalar as necessary */	1260	/* read: check type and grow scalar as necessary */
		1261	SvUPGRADE (data, SVt_PV);
1383	svptr = SvGROW (data, length + dataoffset);	1262	svptr = SvGROW (data, len + dataoffset + 1);
1384	}	1263	}
1385
1386	if (length < 0)
1387	croak ("length must not be negative");
1388		1264
1389	{	1265	{
1390	dREQ;	1266	dREQ;
1391		1267
1392	req->type = ix;	1268	req->type = ix;
1393	req->fh = newSVsv (fh);	1269	req->sv1 = newSVsv (fh);
1394	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1270	req->int1 = fd;
1395	: IoOFP (sv_2io (fh)));	1271	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396	req->offs = offset;
1397	req->size = length;	1272	req->size = len;
1398	req->sv1 = SvREFCNT_inc (data);	1273	req->sv2 = SvREFCNT_inc (data);
1399	req->ptr1 = (char *)svptr + dataoffset;	1274	req->ptr2 = (char *)svptr + dataoffset;
1400	req->stroffset = dataoffset;	1275	req->stroffset = dataoffset;
1401		1276
1402	if (!SvREADONLY (data))	1277	if (!SvREADONLY (data))
1403	{	1278	{
1404	SvREADONLY_on (data);	1279	SvREADONLY_on (data);
1405	req->flags |= FLAG_DATA_RO_OFF;	1280	req->flags |= FLAG_SV2_RO_OFF;
1406	}	1281	}
1407		1282
1408	REQ_SEND;	1283	REQ_SEND;
1409	}	1284	}
1410	}	1285	}
1411		1286
1412	void	1287	void
1413	aio_readlink (path,callback=&PL_sv_undef)	1288	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414	SV * path	1289	ALIAS:
1415	SV * callback	1290	aio_readlink = EIO_READLINK
1416	PROTOTYPE: $$;$	1291	aio_realpath = EIO_REALPATH
1417	PPCODE:	1292	PPCODE:
1418	{	1293	{
1419	SV *data;
1420	dREQ;	1294	dREQ;
1421		1295
1422	data = newSV (NAME_MAX);
1423	SvPOK_on (data);
1424
1425	req->type = REQ_READLINK;	1296	req->type = ix;
1426	req->fh = newSVsv (path);	1297	req_set_path1 (req, pathname);
1427	req->ptr2 = SvPVbyte_nolen (path);
1428	req->sv1 = data;
1429	req->ptr1 = SvPVbyte_nolen (data);
1430		1298
1431	REQ_SEND;	1299	REQ_SEND;
1432	}	1300	}
1433		1301
1434	void	1302	void
1435	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1303	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1436	SV * out_fh
1437	SV * in_fh
1438	UV in_offset
1439	UV length
1440	SV * callback
1441	PROTOTYPE: $$$$;$
1442	PPCODE:	1304	PPCODE:
1443	{	1305	{
		1306	int ifd = s_fileno_croak (in_fh , 0);
		1307	int ofd = s_fileno_croak (out_fh, 1);
1444	dREQ;	1308	dREQ;
1445		1309
1446	req->type = REQ_SENDFILE;	1310	req->type = EIO_SENDFILE;
1447	req->fh = newSVsv (out_fh);	1311	req->sv1 = newSVsv (out_fh);
1448	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1312	req->int1 = ofd;
1449	req->sv2 = newSVsv (in_fh);	1313	req->sv2 = newSVsv (in_fh);
1450	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1314	req->int2 = ifd;
1451	req->offs = in_offset;	1315	req->offs = in_offset;
1452	req->size = length;	1316	req->size = length;
1453		1317
1454	REQ_SEND;	1318	REQ_SEND;
1455	}	1319	}
1456		1320
1457	void	1321	void
1458	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1322	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1459	SV * fh
1460	UV offset
1461	IV length
1462	SV * callback
1463	PROTOTYPE: $$$;$
1464	PPCODE:	1323	PPCODE:
1465	{	1324	{
		1325	int fd = s_fileno_croak (fh, 0);
1466	dREQ;	1326	dREQ;
1467		1327
1468	req->type = REQ_READAHEAD;	1328	req->type = EIO_READAHEAD;
1469	req->fh = newSVsv (fh);	1329	req->sv1 = newSVsv (fh);
1470	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1330	req->int1 = fd;
1471	req->offs = offset;	1331	req->offs = offset;
1472	req->size = length;	1332	req->size = length;
1473		1333
1474	REQ_SEND;	1334	REQ_SEND;
1475	}	1335	}
1476		1336
1477	void	1337	void
1478	aio_stat (fh_or_path,callback=&PL_sv_undef)	1338	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479	SV * fh_or_path
1480	SV * callback
1481	ALIAS:	1339	ALIAS:
1482	aio_stat = REQ_STAT	1340	aio_stat = EIO_STAT
1483	aio_lstat = REQ_LSTAT	1341	aio_lstat = EIO_LSTAT
		1342	aio_statvfs = EIO_STATVFS
1484	PPCODE:	1343	PPCODE:
1485	{	1344	{
1486	dREQ;	1345	dREQ;
1487		1346
1488	New (0, req->statdata, 1, Stat_t);	1347	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1489	if (!req->statdata)
1490	{
1491	req_free (req);
1492	croak ("out of memory during aio_req->statdata allocation");
1493	}
1494
1495	if (SvPOK (fh_or_path))
1496	{
1497	req->type = ix;
1498	req->sv1 = newSVsv (fh_or_path);
1499	req->ptr1 = SvPVbyte_nolen (fh_or_path);
1500	}
1501	else
1502	{
1503	req->type = REQ_FSTAT;
1504	req->fh = newSVsv (fh_or_path);
1505	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506	}
1507		1348
1508	REQ_SEND;	1349	REQ_SEND;
1509	}	1350	}
1510		1351
		1352	UV
		1353	major (UV dev)
		1354	ALIAS:
		1355	minor = 1
		1356	CODE:
		1357	RETVAL = ix ? major (dev) : minor (dev);
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	UV
		1362	makedev (UV maj, UV min)
		1363	CODE:
		1364	RETVAL = makedev (maj, min);
		1365	OUTPUT:
		1366	RETVAL
		1367
1511	void	1368	void
		1369	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1375	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1376	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1377
		1378	REQ_SEND;
		1379	}
		1380
		1381	void
		1382	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1388	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->int2 = mode;
		1400	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	dREQ;
		1410
		1411	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1412	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1413	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1414
		1415	REQ_SEND;
		1416	}
		1417
		1418	void
		1419	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1420	PPCODE:
		1421	{
		1422	dREQ;
		1423
		1424	req->type = EIO_READDIR;
		1425	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1426
		1427	if (flags & EIO_READDIR_DENTS)
		1428	req->int1 |= EIO_READDIR_CUSTOM2;
		1429
		1430	req_set_path1 (req, pathname);
		1431
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
		1436	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1437	PPCODE:
		1438	{
		1439	dREQ;
		1440
		1441	req->type = EIO_MKDIR;
		1442	req->int2 = mode;
		1443	req_set_path1 (req, pathname);
		1444
		1445	REQ_SEND;
		1446	}
		1447
		1448	void
1512	aio_unlink (pathname,callback=&PL_sv_undef)	1449	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513	SV * pathname
1514	SV * callback
1515	ALIAS:	1450	ALIAS:
1516	aio_unlink = REQ_UNLINK	1451	aio_unlink = EIO_UNLINK
1517	aio_rmdir = REQ_RMDIR	1452	aio_rmdir = EIO_RMDIR
1518	aio_readdir = REQ_READDIR	1453	aio_readdir = EIO_READDIR
1519	PPCODE:	1454	PPCODE:
1520	{	1455	{
1521	dREQ;	1456	dREQ;
1522		1457
1523	req->type = ix;	1458	req->type = ix;
1524	req->sv1 = newSVsv (pathname);	1459	req_set_path1 (req, pathname);
1525	req->ptr1 = SvPVbyte_nolen (pathname);	1460
1526
1527	REQ_SEND;	1461	REQ_SEND;
1528	}	1462	}
1529		1463
1530	void	1464	void
1531	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1465	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1532	SV * oldpath
1533	SV * newpath
1534	SV * callback
1535	ALIAS:	1466	ALIAS:
1536	aio_link = REQ_LINK	1467	aio_link = EIO_LINK
1537	aio_symlink = REQ_SYMLINK	1468	aio_symlink = EIO_SYMLINK
1538	aio_rename = REQ_RENAME	1469	aio_rename = EIO_RENAME
1539	PPCODE:	1470	PPCODE:
1540	{	1471	{
		1472	eio_wd wd2 = 0;
1541	dREQ;	1473	dREQ;
1542		1474
1543	req->type = ix;	1475	req->type = ix;
1544	req->fh = newSVsv (oldpath);	1476	req_set_path1 (req, oldpath);
1545	req->ptr2 = SvPVbyte_nolen (req->fh);	1477	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1546	req->sv1 = newSVsv (newpath);	1478	req->int3 = (long)wd2;
1547	req->ptr1 = SvPVbyte_nolen (newpath);
1548		1479
1549	REQ_SEND;	1480	REQ_SEND;
1550	}	1481	}
1551		1482
1552	void	1483	void
1553	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1484	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1554	SV * pathname
1555	SV * callback
1556	UV mode
1557	UV dev
1558	PPCODE:	1485	PPCODE:
1559	{	1486	{
1560	dREQ;	1487	dREQ;
1561		1488
1562	req->type = REQ_MKNOD;	1489	req->type = EIO_MKNOD;
1563	req->sv1 = newSVsv (pathname);
1564	req->ptr1 = SvPVbyte_nolen (pathname);
1565	req->mode = (mode_t)mode;	1490	req->int2 = (mode_t)mode;
1566	req->offs = dev;	1491	req->offs = dev;
		1492	req_set_path1 (req, pathname);
1567		1493
1568	REQ_SEND;	1494	REQ_SEND;
1569	}	1495	}
1570		1496
1571	void	1497	void
		1498	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1499	ALIAS:
		1500	aio_mtouch = EIO_MTOUCH
		1501	aio_msync = EIO_MSYNC
		1502	PPCODE:
		1503	{
		1504	STRLEN svlen;
		1505	char *svptr = SvPVbyte (data, svlen);
		1506	UV len = SvUV (length);
		1507
		1508	if (offset < 0)
		1509	offset += svlen;
		1510
		1511	if (offset < 0 || offset > svlen)
		1512	croak ("offset outside of scalar");
		1513
		1514	if (!SvOK (length) || len + offset > svlen)
		1515	len = svlen - offset;
		1516
		1517	{
		1518	dREQ;
		1519
		1520	req->type = ix;
		1521	req->sv2 = SvREFCNT_inc (data);
		1522	req->ptr2 = (char *)svptr + offset;
		1523	req->size = len;
		1524	req->int1 = flags;
		1525
		1526	REQ_SEND;
		1527	}
		1528	}
		1529
		1530	void
		1531	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1532	PPCODE:
		1533	{
		1534	STRLEN svlen;
		1535	char *svptr = SvPVbyte (data, svlen);
		1536	UV len = SvUV (length);
		1537
		1538	if (offset < 0)
		1539	offset += svlen;
		1540
		1541	if (offset < 0 || offset > svlen)
		1542	croak ("offset outside of scalar");
		1543
		1544	if (!SvOK (length) || len + offset > svlen)
		1545	len = svlen - offset;
		1546
		1547	{
		1548	dREQ;
		1549
		1550	req->type = EIO_MLOCK;
		1551	req->sv2 = SvREFCNT_inc (data);
		1552	req->ptr2 = (char *)svptr + offset;
		1553	req->size = len;
		1554
		1555	REQ_SEND;
		1556	}
		1557	}
		1558
		1559	void
		1560	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1561	PPCODE:
		1562	{
		1563	dREQ;
		1564
		1565	req->type = EIO_MLOCKALL;
		1566	req->int1 = flags;
		1567
		1568	REQ_SEND;
		1569	}
		1570
		1571	void
1572	aio_busy (delay,callback=&PL_sv_undef)	1572	aio_busy (double delay, SV *callback=&PL_sv_undef)
1573	double delay
1574	SV * callback
1575	PPCODE:	1573	PPCODE:
1576	{	1574	{
1577	dREQ;	1575	dREQ;
1578		1576
1579	req->type = REQ_BUSY;	1577	req->type = EIO_BUSY;
1580	req->int1 = delay < 0. ? 0 : delay;	1578	req->nv1 = delay < 0. ? 0. : delay;
1581	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582		1579
1583	REQ_SEND;	1580	REQ_SEND;
1584	}	1581	}
1585		1582
1586	void	1583	void
1587	aio_group (callback=&PL_sv_undef)	1584	aio_group (SV *callback=&PL_sv_undef)
1588	SV * callback
1589	PROTOTYPE: ;$
1590	PPCODE:	1585	PPCODE:
1591	{	1586	{
1592	dREQ;	1587	dREQ;
1593		1588
1594	req->type = REQ_GROUP;	1589	req->type = EIO_GROUP;
1595		1590
1596	req_send (req);	1591	req_submit (req);
1597	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1592	XPUSHs (req_sv (req, aio_grp_stash));
1598	}	1593	}
1599		1594
1600	void	1595	void
1601	aio_nop (callback=&PL_sv_undef)	1596	aio_nop (SV *callback=&PL_sv_undef)
1602	SV * callback	1597	ALIAS:
		1598	aio_nop = EIO_NOP
		1599	aio_sync = EIO_SYNC
1603	PPCODE:	1600	PPCODE:
1604	{	1601	{
1605	dREQ;	1602	dREQ;
1606		1603
1607	req->type = REQ_NOP;	1604	req->type = ix;
1608		1605
1609	REQ_SEND;	1606	REQ_SEND;
1610	}	1607	}
1611		1608
1612	int	1609	int
1613	aioreq_pri (int pri = 0)	1610	aioreq_pri (int pri = 0)
1614	PROTOTYPE: ;$
1615	CODE:	1611	CODE:
1616	RETVAL = next_pri - PRI_BIAS;	1612	RETVAL = next_pri;
1617	if (items > 0)	1613	if (items > 0)
1618	{	1614	{
1619	if (pri < PRI_MIN) pri = PRI_MIN;	1615	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620	if (pri > PRI_MAX) pri = PRI_MAX;	1616	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621	next_pri = pri + PRI_BIAS;	1617	next_pri = pri;
1622	}	1618	}
1623	OUTPUT:	1619	OUTPUT:
1624	RETVAL	1620	RETVAL
1625		1621
1626	void	1622	void
1627	aioreq_nice (int nice = 0)	1623	aioreq_nice (int nice = 0)
1628	CODE:	1624	CODE:
1629	nice = next_pri - nice;	1625	nice = next_pri - nice;
1630	if (nice < PRI_MIN) nice = PRI_MIN;	1626	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631	if (nice > PRI_MAX) nice = PRI_MAX;	1627	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632	next_pri = nice + PRI_BIAS;	1628	next_pri = nice;
1633		1629
1634	void	1630	void
1635	flush ()	1631	flush ()
1636	PROTOTYPE:
1637	CODE:	1632	CODE:
1638	while (nreqs)	1633	while (eio_nreqs ())
1639	{	1634	{
1640	poll_wait ();	1635	poll_wait ();
1641	poll_cb (0);	1636	poll_cb ();
1642	}	1637	}
1643		1638
1644	void	1639	int
1645	poll()	1640	poll ()
1646	PROTOTYPE:
1647	CODE:	1641	CODE:
1648	if (nreqs)
1649	{
1650	poll_wait ();	1642	poll_wait ();
1651	poll_cb (0);	1643	RETVAL = poll_cb ();
1652	}
1653
1654	int
1655	poll_fileno()
1656	PROTOTYPE:
1657	CODE:
1658	RETVAL = respipe [0];
1659	OUTPUT:	1644	OUTPUT:
1660	RETVAL	1645	RETVAL
1661		1646
1662	int	1647	int
		1648	poll_fileno ()
		1649	CODE:
		1650	RETVAL = s_epipe_fd (&respipe);
		1651	OUTPUT:
		1652	RETVAL
		1653
		1654	int
1663	poll_cb(...)	1655	poll_cb (...)
1664	PROTOTYPE:	1656	PROTOTYPE:
1665	CODE:	1657	CODE:
1666	RETVAL = poll_cb ();	1658	RETVAL = poll_cb ();
1667	OUTPUT:	1659	OUTPUT:
1668	RETVAL	1660	RETVAL
1669		1661
1670	void	1662	void
1671	poll_wait()	1663	poll_wait ()
1672	PROTOTYPE:
1673	CODE:	1664	CODE:
1674	if (nreqs)
1675	poll_wait ();	1665	poll_wait ();
1676		1666
1677	int	1667	int
1678	nreqs()	1668	nreqs ()
1679	PROTOTYPE:
1680	CODE:	1669	CODE:
1681	RETVAL = nreqs;	1670	RETVAL = eio_nreqs ();
1682	OUTPUT:	1671	OUTPUT:
1683	RETVAL	1672	RETVAL
1684		1673
1685	int	1674	int
1686	nready()	1675	nready ()
1687	PROTOTYPE:
1688	CODE:	1676	CODE:
1689	RETVAL = get_nready ();	1677	RETVAL = eio_nready ();
1690	OUTPUT:	1678	OUTPUT:
1691	RETVAL	1679	RETVAL
1692		1680
1693	int	1681	int
1694	npending()	1682	npending ()
1695	PROTOTYPE:
1696	CODE:	1683	CODE:
1697	RETVAL = get_npending ();	1684	RETVAL = eio_npending ();
1698	OUTPUT:	1685	OUTPUT:
1699	RETVAL	1686	RETVAL
1700		1687
1701	int	1688	int
1702	nthreads()	1689	nthreads ()
1703	PROTOTYPE:
1704	CODE:	1690	CODE:
1705	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1691	RETVAL = eio_nthreads ();
1706	RETVAL = started;
1707	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1708	OUTPUT:	1692	OUTPUT:
1709	RETVAL	1693	RETVAL
1710		1694
		1695	int
		1696	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1697	CODE:
		1698	RETVAL = posix_fadvise (fh, offset, length, advice);
		1699	OUTPUT:
		1700	RETVAL
		1701
		1702	IV
		1703	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1704	CODE:
		1705	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1706	OUTPUT:
		1707	RETVAL
		1708
		1709	void
		1710	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1711	PPCODE:
		1712	sv_unmagic (scalar, MMAP_MAGIC);
		1713	{
		1714	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1715	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1716	if (addr == (void *)-1)
		1717	XSRETURN_NO;
		1718
		1719	sv_force_normal (scalar);
		1720
		1721	/* we store the length in mg_obj, as namlen is I32 :/ */
		1722	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1723	->mg_obj = (SV *)length;
		1724
		1725	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1726
		1727	if (!(prot & PROT_WRITE))
		1728	SvREADONLY_on (scalar);
		1729
		1730	if (SvLEN (scalar))
		1731	Safefree (SvPVX (scalar));
		1732
		1733	SvPVX (scalar) = (char *)addr;
		1734	SvCUR_set (scalar, length);
		1735	SvLEN_set (scalar, 0);
		1736	SvPOK_only (scalar);
		1737
		1738	XSRETURN_YES;
		1739	}
		1740
		1741	void
		1742	munmap (SV *scalar)
		1743	CODE:
		1744	sv_unmagic (scalar, MMAP_MAGIC);
		1745
		1746	int
		1747	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1748	ALIAS:
		1749	mprotect = 1
		1750	CODE:
		1751	{
		1752	STRLEN svlen;
		1753	void *addr = SvPVbyte (scalar, svlen);
		1754	size_t len = SvUV (length);
		1755
		1756	if (offset < 0)
		1757	offset += svlen;
		1758
		1759	if (offset < 0 || offset > svlen)
		1760	croak ("offset outside of scalar");
		1761
		1762	if (!SvOK (length) || len + offset > svlen)
		1763	len = svlen - offset;
		1764
		1765	addr = (void *)(((intptr_t)addr) + offset);
		1766	eio_page_align (&addr, &len);
		1767
		1768	switch (ix)
		1769	{
		1770	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1771	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1772	}
		1773	}
		1774	OUTPUT:
		1775	RETVAL
		1776
		1777	int
		1778	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1779	CODE:
		1780	{
		1781	STRLEN svlen;
		1782	void *addr = SvPVbyte (scalar, svlen);
		1783	size_t len = SvUV (length);
		1784
		1785	if (offset < 0)
		1786	offset += svlen;
		1787
		1788	if (offset < 0 || offset > svlen)
		1789	croak ("offset outside of scalar");
		1790
		1791	if (!SvOK (length) || len + offset > svlen)
		1792	len = svlen - offset;
		1793
		1794	addr = (void *)(((intptr_t)addr) + offset);
		1795	eio_page_align (&addr, &len);
		1796	#if _POSIX_MEMLOCK_RANGE
		1797	RETVAL = munlock (addr, len);
		1798	#else
		1799	RETVAL = ((errno = ENOSYS), -1);
		1800	#endif
		1801	}
		1802	OUTPUT:
		1803	RETVAL
		1804
		1805	int
		1806	munlockall ()
		1807	CODE:
		1808	#if _POSIX_MEMLOCK
		1809	munlockall ();
		1810	#else
		1811	RETVAL = -1;
		1812	errno = ENOSYS;
		1813	#endif
		1814	OUTPUT:
		1815	RETVAL
		1816
		1817	void _on_next_submit (SV *cb)
		1818	CODE:
		1819	SvREFCNT_dec (on_next_submit);
		1820	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1821
1711	PROTOTYPES: DISABLE	1822	PROTOTYPES: DISABLE
		1823
		1824	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1825
		1826	BOOT:
		1827	{
		1828	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1829	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1830	}
		1831
		1832	void
		1833	DESTROY (SV *self)
		1834	CODE:
		1835	{
		1836	aio_wd wd = SvAIO_WD (self);
		1837	#if HAVE_AT
		1838	{
		1839	SV *callback = &PL_sv_undef;
		1840	dREQ; /* clobbers next_pri :/ */
		1841	next_pri = req->pri; /* restore next_pri */
		1842	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1843	req->type = EIO_WD_CLOSE;
		1844	req->wd = wd;
		1845	REQ_SEND;
		1846	}
		1847	#else
		1848	eio_wd_close_sync (wd);
		1849	#endif
		1850	}
1712		1851
1713	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1852	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714		1853
1715	void	1854	void
1716	cancel (aio_req_ornot req)	1855	cancel (aio_req_ornot req)
1717	CODE:	1856	CODE:
1718	req_cancel (req);	1857	eio_cancel (req);
1719		1858
1720	void	1859	void
1721	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1860	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1722	CODE:	1861	PPCODE:
		1862	{
		1863	if (GIMME_V != G_VOID)
		1864	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1865
		1866	if (items > 1)
		1867	{
		1868	SV *cb_cv =get_cb (callback);
		1869
1723	SvREFCNT_dec (req->callback);	1870	SvREFCNT_dec (req->callback);
1724	req->callback = newSVsv (callback);	1871	req->callback = SvREFCNT_inc (cb_cv);
		1872	}
		1873	}
1725		1874
1726	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1875	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727		1876
1728	void	1877	void
1729	add (aio_req grp, ...)	1878	add (aio_req grp, ...)
1730	PPCODE:	1879	PPCODE:
1731	{	1880	{
1732	int i;	1881	int i;
1733	aio_req req;
1734		1882
1735	if (grp->int1 == 2)	1883	if (grp->int1 == 2)
1736	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1884	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737		1885
1738	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1739	{	1887	{
		1888	aio_req req;
		1889
1740	if (GIMME_V != G_VOID)	1890	if (GIMME_V != G_VOID)
1741	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1891	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742		1892
1743	req = SvAIO_REQ (ST (i));	1893	req = SvAIO_REQ (ST (i));
1744		1894
1745	if (req)	1895	if (req)
1746	{	1896	eio_grp_add (grp, req);
1747	++grp->size;
1748	req->grp = grp;
1749
1750	req->grp_prev = 0;
1751	req->grp_next = grp->grp_first;
1752
1753	if (grp->grp_first)
1754	grp->grp_first->grp_prev = req;
1755
1756	grp->grp_first = req;
1757	}
1758	}	1897	}
1759	}	1898	}
1760		1899
1761	void	1900	void
1762	cancel_subs (aio_req_ornot req)	1901	cancel_subs (aio_req_ornot req)
…		…
1771	AV *av;	1910	AV *av;
1772		1911
1773	grp->errorno = errno;	1912	grp->errorno = errno;
1774		1913
1775	av = newAV ();	1914	av = newAV ();
		1915	av_extend (av, items - 1);
1776		1916
1777	for (i = 1; i < items; ++i )	1917	for (i = 1; i < items; ++i )
1778	av_push (av, newSVsv (ST (i)));	1918	av_push (av, newSVsv (ST (i)));
1779		1919
1780	SvREFCNT_dec (grp->sv1);	1920	SvREFCNT_dec (grp->sv1);
…		…
1787	grp->errorno = errorno;	1927	grp->errorno = errorno;
1788		1928
1789	void	1929	void
1790	limit (aio_req grp, int limit)	1930	limit (aio_req grp, int limit)
1791	CODE:	1931	CODE:
1792	grp->int2 = limit;	1932	eio_grp_limit (grp, limit);
1793	aio_grp_feed (grp);
1794		1933
1795	void	1934	void
1796	feed (aio_req grp, SV *callback=&PL_sv_undef)	1935	feed (aio_req grp, SV *callback=&PL_sv_undef)
1797	CODE:	1936	CODE:
1798	{	1937	{
1799	SvREFCNT_dec (grp->sv2);	1938	SvREFCNT_dec (grp->sv2);
1800	grp->sv2 = newSVsv (callback);	1939	grp->sv2 = newSVsv (callback);
		1940	grp->feed = aio_grp_feed;
1801		1941
1802	if (grp->int2 <= 0)	1942	if (grp->int2 <= 0)
1803	grp->int2 = 2;	1943	grp->int2 = 2;
1804		1944
1805	aio_grp_feed (grp);	1945	eio_grp_limit (grp, grp->int2);
1806	}	1946	}
1807		1947

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