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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.92 by root, Wed Nov 8 01:59:59 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
92	typedef SV SV8; /* byte-sv, used for argument-checking */
93		331
94	enum {	332	enum {
95	REQ_QUIT,	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
96	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
98	REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100	REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,
106	};	334	};
107		335
108	#define AIO_REQ_KLASS "IO::AIO::REQ"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"
110
111	typedef struct aio_cb
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;
116	SV *sv1, *sv2;
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;
123	int type;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127
128	unsigned char flags;
129	unsigned char pri;
130
131	SV *self; /* the perl counterpart of this request, if any */
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
133	} aio_cb;
134
135	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};
140
141	typedef aio_cb *aio_req;	336	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
143		339
144	enum {	340	static SV *on_next_submit;
145	PRI_MIN = -4,	341	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	342	static int max_outstanding;
147		343
148	DEFAULT_PRI = 0,	344	static s_epipe respipe;
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152		345
153	#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155	static unsigned int max_poll_time = 0;
156	static unsigned int max_poll_reqs = 0;
157
158	/* calculcate time difference in ~1/AIO_TICKS of a second */
159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181	typedef struct worker {
182	/* locked by wrklock */
183	struct worker *prev, *next;
184
185	pthread_t tid;
186
187	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */
189	void *dbuf;
190	DIR *dirp;
191	} worker;
192
193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195	static void worker_clear (worker *wrk)
196	{
197	if (wrk->dirp)
198	{
199	closedir (wrk->dirp);
200	wrk->dirp = 0;
201	}
202
203	if (wrk->dbuf)
204	{
205	free (wrk->dbuf);
206	wrk->dbuf = 0;
207	}
208	}
209
210	static void worker_free (worker *wrk)
211	{
212	wrk->next->prev = wrk->prev;
213	wrk->prev->next = wrk->next;
214
215	free (wrk);
216	}
217
218	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];
222
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227	#if WORDACCESS_UNSAFE
228
229	static unsigned int get_nready ()
230	{
231	unsigned int retval;
232
233	LOCK (reqlock);
234	retval = nready;
235	UNLOCK (reqlock);
236
237	return retval;
238	}
239
240	static unsigned int get_npending ()
241	{
242	unsigned int retval;
243
244	LOCK (reslock);
245	retval = npending;
246	UNLOCK (reslock);
247
248	return retval;
249	}
250
251	static unsigned int get_nthreads ()
252	{
253	unsigned int retval;
254
255	LOCK (wrklock);
256	retval = started;
257	UNLOCK (wrklock);
258
259	return retval;
260	}
261
262	#else
263
264	# define get_nready() nready
265	# define get_npending() npending
266	# define get_nthreads() started
267
268	#endif
269
270	/*
271	* a somewhat faster data structure might be nice, but
272	* with 8 priorities this actually needs <20 insns
273	* per shift, the most expensive operation.
274	*/
275	typedef struct {
276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277	int size;
278	} reqq;
279
280	static reqq req_queue;
281	static reqq res_queue;
282
283	int reqq_push (reqq *q, aio_req req)
284	{
285	int pri = req->pri;
286	req->next = 0;
287
288	if (q->qe[pri])
289	{
290	q->qe[pri]->next = req;
291	q->qe[pri] = req;
292	}
293	else
294	q->qe[pri] = q->qs[pri] = req;
295
296	return q->size++;
297	}
298
299	aio_req reqq_shift (reqq *q)
300	{
301	int pri;
302
303	if (!q->size)
304	return 0;
305
306	--q->size;
307
308	for (pri = NUM_PRI; pri--; )
309	{
310	aio_req req = q->qs[pri];
311
312	if (req)
313	{
314	if (!(q->qs[pri] = req->next))
315	q->qe[pri] = 0;
316
317	return req;
318	}
319	}
320
321	abort ();
322	}
323
324	static int poll_cb ();
325	static void req_invoke (aio_req req);
326	static void req_free (aio_req req);	346	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	347	static void req_cancel (aio_req req);
328		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
329	/* must be called at most once */	363	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	364	static SV *
		365	req_sv (aio_req req, HV *stash)
331	{	366	{
332	if (!req->self)	367	if (!req->self)
333	{	368	{
334	req->self = (SV *)newHV ();	369	req->self = (SV *)newHV ();
335	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336	}	371	}
337		372
338	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339	}	374	}
340		375
341	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)
342	{	384	{
343	MAGIC *mg;	385	MAGIC *mg;
344		386
345	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")))
346	croak ("object of class " AIO_REQ_KLASS " expected");	392	croak ("object of class IO::AIO::REQ expected");
347		393
348	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349		395
350	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	397	}
352		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
353	static void aio_grp_feed (aio_req grp)	411	aio_grp_feed (aio_req grp)
354	{	412	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	413	if (grp->sv2 && SvOK (grp->sv2))
356	{	414	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	415	dSP;
362		416
363	ENTER;	417	ENTER;
364	SAVETMPS;	418	SAVETMPS;
365	PUSHMARK (SP);	419	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	420	XPUSHs (req_sv (grp, aio_grp_stash));
367	PUTBACK;	421	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	422	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	423	SPAGAIN;
370	FREETMPS;	424	FREETMPS;
371	LEAVE;	425	LEAVE;
372	}
373
374	/* stop if no progress has been made */
375	if (old_len == grp->size)
376	{
377	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;
379	break;
380	}
381	}	426	}
382	}	427	}
383		428
384	static void aio_grp_dec (aio_req grp)	429	static void
		430	req_submit (eio_req *req)
385	{	431	{
386	--grp->size;	432	eio_submit (req);
387		433
388	/* call feeder, if applicable */	434	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	435	{
394	req_invoke (grp);	436	dSP;
395	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);
396	}	444	}
397	}	445	}
398		446
		447	static int
399	static void req_invoke (aio_req req)	448	req_invoke (eio_req *req)
400	{	449	{
401	dSP;
402
403	if (req->flags & FLAG_SV1_RO_OFF)	450	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	451	SvREADONLY_off (req->sv2);
405		452
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	453	if (!EIO_CANCELLED (req) && req->callback)
407	{	454	{
		455	dSP;
		456	static SV *sv_result_cache; /* caches the result integer SV */
		457	SV *sv_result;
		458
408	ENTER;	459	ENTER;
409	SAVETMPS;	460	SAVETMPS;
410	PUSHMARK (SP);	461	PUSHMARK (SP);
411	EXTEND (SP, 1);	462	EXTEND (SP, 1);
412		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
413	switch (req->type)	477	switch (req->type)
414	{	478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
415	case REQ_READDIR:	483	case EIO_READDIR:
416	{	484	{
417	SV *rv = &PL_sv_undef;	485	SV *rv = &PL_sv_undef;
418		486
419	if (req->result >= 0)	487	if (req->result >= 0)
420	{	488	{
421	int i;	489	int i;
422	char *buf = req->ptr2;	490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423	AV *av = newAV ();	492	AV *av = newAV ();
424		493
425	av_extend (av, req->result - 1);	494	av_extend (av, req->result - 1);
426		495
427	for (i = 0; i < req->result; ++i)	496	for (i = 0; i < req->result; ++i)
428	{	497	{
429	SV *sv = newSVpv (buf, 0);	498	if (req->int1 & EIO_READDIR_DENTS)
		499	{
		500	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430		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
431	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);
432	buf += SvCUR (sv) + 1;	530	names += SvCUR (name) + 1;
		531	}
433	}	532	}
434		533
435	rv = sv_2mortal (newRV_noinc ((SV *)av));	534	rv = sv_2mortal (newRV_noinc ((SV *)av));
436	}	535	}
437		536
438	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))));
439	}	541	}
440	break;	542	break;
441		543
442	case REQ_OPEN:	544	case EIO_OPEN:
443	{	545	{
444	/* convert fd to fh */	546	/* convert fd to fh */
445	SV *fh;	547	SV *fh = &PL_sv_undef;
446		548
447	PUSHs (sv_2mortal (newSViv (req->result)));	549	if (req->result >= 0)
448	PUTBACK;	550	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	551	GV *gv = (GV *)sv_newmortal ();
450	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);
451		558
452	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	);
453		566
		567	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		568	fh = (SV *)gv;
		569	}
		570
454	PUSHMARK (SP);	571	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	572	}
457	break;	573	break;
458		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
459	case REQ_GROUP:	607	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	608	req->int1 = 2; /* mark group as finished */
461		609
462	if (req->sv1)	610	if (req->sv1)
463	{	611	{
464	int i;	612	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	616	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	617	PUSHs (*av_fetch (av, i, 0));
470	}	618	}
471	break;	619	break;
472		620
473	case REQ_NOP:	621	case EIO_NOP:
474	case REQ_BUSY:	622	case EIO_BUSY:
475	break;	623	break;
476		624
477	case REQ_READLINK:	625	case EIO_READLINK:
		626	case EIO_REALPATH:
478	if (req->result > 0)	627	if (req->result > 0)
479	{	628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480	SvCUR_set (req->sv1, req->result);
481	*SvEND (req->sv1) = 0;
482	PUSHs (req->sv1);
483	}
484	break;	629	break;
485		630
486	case REQ_STAT:	631	case EIO_STAT:
487	case REQ_LSTAT:	632	case EIO_LSTAT:
488	case REQ_FSTAT:	633	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
490	PL_laststatval = req->result;	636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
491	PL_statcache = *(Stat_t *)(req->ptr2);	638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	639
		640	PUSHs (sv_result);
493	break;	641	break;
494		642
495	case REQ_READ:	643	case EIO_SEEK:
496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	644	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
497	*SvEND (req->sv1) = 0;
498	PUSHs (sv_2mortal (newSViv (req->result)));
499	break;	645	break;
500		646
		647	case EIO_READ:
		648	{
		649	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		650	*SvEND (req->sv2) = 0;
		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
501	default:	662	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	663	PUSHs (sv_result);
503	break;	664	break;
504	}	665	}
505		666
506	errno = req->errorno;	667	errno = req->errorno;
507		668
508	PUTBACK;	669	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	670	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	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;
511		677
512	FREETMPS;	678	FREETMPS;
513	LEAVE;	679	LEAVE;
		680
		681	PUTBACK;
514	}	682	}
515		683
516	if (req->grp)	684	return !!SvTRUE (ERRSV);
517	{
518	aio_req grp = req->grp;
519
520	/* unlink request */
521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524	if (grp->grp_first == req)
525	grp->grp_first = req->grp_next;
526
527	aio_grp_dec (grp);
528	}
529
530	if (SvTRUE (ERRSV))
531	{
532	req_free (req);
533	croak (0);
534	}
535	}	685	}
536		686
537	static void req_free (aio_req req)	687	static void
		688	req_destroy (aio_req req)
538	{	689	{
539	if (req->self)	690	if (req->self)
540	{	691	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	692	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	693	SvREFCNT_dec (req->self);
543	}	694	}
544		695
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	696	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	697	SvREFCNT_dec (req->sv2);
		698	SvREFCNT_dec (req->sv3);
		699	SvREFCNT_dec (req->sv4);
548	SvREFCNT_dec (req->callback);	700	SvREFCNT_dec (req->callback);
549		701
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	702	free (req);
554	}	703	}
555		704
		705	static void
556	static void req_cancel_subs (aio_req grp)	706	req_cancel_subs (aio_req grp)
557	{	707	{
558	aio_req sub;
559
560	if (grp->type != REQ_GROUP)	708	if (grp->type != EIO_GROUP)
561	return;	709	return;
562		710
563	SvREFCNT_dec (grp->sv2);	711	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	712	grp->sv2 = 0;
565		713
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	714	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	715	}
569		716
570	static void req_cancel (aio_req req)	717	static void ecb_cold
		718	create_respipe (void)
571	{	719	{
572	req->flags |= FLAG_CANCELLED;	720	if (s_epipe_renew (&respipe))
573		721	croak ("IO::AIO: unable to initialize result pipe");
574	req_cancel_subs (req);
575	}	722	}
576		723
577	static void *aio_proc(void *arg);	724	static void
578		725	poll_wait (void)
579	static void start_thread (void)
580	{	726	{
581	sigset_t fullsigset, oldsigset;
582	pthread_attr_t attr;
583
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	pthread_attr_init (&attr);
590	pthread_attr_setstacksize (&attr, STACKSIZE);
591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592	#ifdef PTHREAD_SCOPE_PROCESS
593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594	#endif
595
596	sigfillset (&fullsigset);
597
598	LOCK (wrklock);
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
602	{
603	wrk->prev = &wrk_first;
604	wrk->next = wrk_first.next;
605	wrk_first.next->prev = wrk;
606	wrk_first.next = wrk;
607	++started;
608	}
609	else
610	free (wrk);
611
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);
613	UNLOCK (wrklock);
614	}
615
616	static void maybe_start_thread ()
617	{
618	if (get_nthreads () >= wanted)
619	return;
620
621	/* todo: maybe use idle here, but might be less exact */
622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623	return;
624
625	start_thread ();
626	}
627
628	static void req_send (aio_req req)
629	{
630	++nreqs;
631
632	LOCK (reqlock);
633	++nready;
634	reqq_push (&req_queue, req);
635	pthread_cond_signal (&reqwait);
636	UNLOCK (reqlock);
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	pthread_cond_signal (&reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()
683	{
684	fd_set rfd;
685
686	while (nreqs)	727	while (eio_nreqs ())
687	{	728	{
688	int size;	729	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	730
		731	X_LOCK (reslock);
690	size = res_queue.size;	732	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	733	X_UNLOCK (reslock);
692		734
693	if (size)	735	if (size)
694	return;	736	return;
695		737
696	maybe_start_thread ();	738	etp_maybe_start_thread ();
697		739
698	FD_ZERO(&rfd);	740	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	741	}
703	}	742	}
704		743
705	static int poll_cb ()	744	static int
		745	poll_cb (void)
706	{	746	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	for (;;)	747	for (;;)
718	{	748	{
719	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)
720	{	862	{
721	maybe_start_thread ();	863	path = AvARRAY (rv)[1];
		864	wdob = AvARRAY (rv)[0];
722		865
723	LOCK (reslock);	866	if (SvOK (wdob))
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{	867	{
728	--npending;	868	*wd = SvAIO_WD (wdob);
729		869	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
730	if (!res_queue.size)
731	{
732	/* read any signals sent by the worker threads */
733	char buf [32];
734	while (read (respipe [0], buf, 32) == 32)
735	;
736	}
737	}
738
739	UNLOCK (reslock);
740
741	if (!req)
742	break;
743
744	--nreqs;
745
746	if (req->type == REQ_GROUP && req->size)
747	{
748	req->int1 = 1; /* mark request as delayed */
749	continue;
750	}	870	}
751	else	871	else
752	{	872	*wd = EIO_INVALID_WD;
753	req_invoke (req);
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}	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	}
771		884
772	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)));
773	break;	908	break;
774		909
775	poll_wait ();	910	default:
776		911	req->type = type_path;
777	++maxreqs;	912	req_set_path1 (req, fh_or_path);
		913	break;
778	}	914	}
779
780	return count;
781	}	915	}
782		916
783	static void create_pipe ()	917	XS(boot_IO__AIO) ecb_cold;
784	{
785	if (pipe (respipe))
786	croak ("unable to initialize result pipe");
787		918
788	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790
791	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792	croak ("cannot set result pipe to nonblocking mode");
793	}
794
795	/*****************************************************************************/
796	/* work around various missing functions */
797
798	#if !HAVE_PREADWRITE
799	# define pread aio_pread
800	# define pwrite aio_pwrite
801
802	/*
803	* make our pread/pwrite safe against themselves, but not against
804	* normal read/write by using a mutex. slows down execution a lot,
805	* but that's your problem, not mine.
806	*/
807	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810	{
811	ssize_t res;
812	off_t ooffset;
813
814	LOCK (preadwritelock);
815	ooffset = lseek (fd, 0, SEEK_CUR);
816	lseek (fd, offset, SEEK_SET);
817	res = read (fd, buf, count);
818	lseek (fd, ooffset, SEEK_SET);
819	UNLOCK (preadwritelock);
820
821	return res;
822	}
823
824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825	{
826	ssize_t res;
827	off_t ooffset;
828
829	LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);
832	res = write (fd, buf, count);
833	lseek (fd, offset, SEEK_SET);
834	UNLOCK (preadwritelock);
835
836	return res;
837	}
838	#endif
839
840	#if !HAVE_FDATASYNC
841	# define fdatasync fsync
842	#endif
843
844	#if !HAVE_READAHEAD
845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848	{
849	dBUF;
850
851	while (count > 0)
852	{
853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855	pread (fd, aio_buf, len, offset);
856	offset += len;
857	count -= len;
858	}
859
860	errno = 0;
861	}
862
863	#endif
864
865	#if !HAVE_READDIR_R
866	# define readdir_r aio_readdir_r
867
868	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871	{
872	struct dirent *e;
873	int errorno;
874
875	LOCK (readdirlock);
876
877	e = readdir (dirp);
878	errorno = errno;
879
880	if (e)
881	{
882	*res = ent;
883	strcpy (ent->d_name, e->d_name);
884	}
885	else
886	*res = 0;
887
888	UNLOCK (readdirlock);
889
890	errno = errorno;
891	return e ? 0 : -1;
892	}
893	#endif
894
895	/* sendfile always needs emulation */
896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897	{
898	ssize_t res;
899
900	if (!count)
901	return 0;
902
903	#if HAVE_SENDFILE
904	# if __linux
905	res = sendfile (ofd, ifd, &offset, count);
906
907	# elif __freebsd
908	/*
909	* Of course, the freebsd sendfile is a dire hack with no thoughts
910	* wasted on making it similar to other I/O functions.
911	*/
912	{
913	off_t sbytes;
914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916	if (res < 0 && sbytes)
917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918	res = sbytes;
919	}
920
921	# elif __hpux
922	res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924	# elif __solaris
925	{
926	struct sendfilevec vec;
927	size_t sbytes;
928
929	vec.sfv_fd = ifd;
930	vec.sfv_flag = 0;
931	vec.sfv_off = offset;
932	vec.sfv_len = count;
933
934	res = sendfilev (ofd, &vec, 1, &sbytes);
935
936	if (res < 0 && sbytes)
937	res = sbytes;
938	}
939
940	# endif
941	#else
942	res = -1;
943	errno = ENOSYS;
944	#endif
945
946	if (res < 0
947	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948	#if __solaris
949	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
950	#endif
951	)
952	)
953	{
954	/* emulate sendfile. this is a major pain in the ass */
955	dBUF;
956
957	res = 0;
958
959	while (count)
960	{
961	ssize_t cnt;
962
963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965	if (cnt <= 0)
966	{
967	if (cnt && !res) res = -1;
968	break;
969	}
970
971	cnt = write (ofd, aio_buf, cnt);
972
973	if (cnt <= 0)
974	{
975	if (cnt && !res) res = -1;
976	break;
977	}
978
979	offset += cnt;
980	res += cnt;
981	count -= cnt;
982	}
983	}
984
985	return res;
986	}
987
988	/* read a full directory */
989	static void scandir_ (aio_req req, worker *self)
990	{
991	DIR *dirp;
992	union
993	{
994	struct dirent d;
995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996	} *u;
997	struct dirent *entp;
998	char *name, *names;
999	int memlen = 4096;
1000	int memofs = 0;
1001	int res = 0;
1002	int errorno;
1003
1004	LOCK (wrklock);
1005	self->dirp = dirp = opendir (req->ptr1);
1006	self->dbuf = u = malloc (sizeof (*u));
1007	req->flags |= FLAG_PTR2_FREE;
1008	req->ptr2 = names = malloc (memlen);
1009	UNLOCK (wrklock);
1010
1011	if (dirp && u && names)
1012	for (;;)
1013	{
1014	errno = 0;
1015	readdir_r (dirp, &u->d, &entp);
1016
1017	if (!entp)
1018	break;
1019
1020	name = entp->d_name;
1021
1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023	{
1024	int len = strlen (name) + 1;
1025
1026	res++;
1027
1028	while (memofs + len > memlen)
1029	{
1030	memlen *= 2;
1031	LOCK (wrklock);
1032	req->ptr2 = names = realloc (names, memlen);
1033	UNLOCK (wrklock);
1034
1035	if (!names)
1036	break;
1037	}
1038
1039	memcpy (names + memofs, name, len);
1040	memofs += len;
1041	}
1042	}
1043
1044	if (errno)
1045	res = -1;
1046
1047	req->result = res;
1048	}
1049
1050	/*****************************************************************************/
1051
1052	static void *aio_proc (void *thr_arg)
1053	{
1054	aio_req req;
1055	struct timespec ts;
1056	worker *self = (worker *)thr_arg;
1057
1058	/* try to distribute timeouts somewhat evenly */
1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060	* (1000000000UL / 1024UL);
1061
1062	for (;;)
1063	{
1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066	LOCK (reqlock);
1067
1068	for (;;)
1069	{
1070	self->req = req = reqq_shift (&req_queue);
1071
1072	if (req)
1073	break;
1074
1075	++idle;
1076
1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078	== ETIMEDOUT)
1079	{
1080	if (idle > max_idle)
1081	{
1082	--idle;
1083	UNLOCK (reqlock);
1084	LOCK (wrklock);
1085	--started;
1086	UNLOCK (wrklock);
1087	goto quit;
1088	}
1089
1090	/* we are allowed to idle, so do so without any timeout */
1091	pthread_cond_wait (&reqwait, &reqlock);
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093	}
1094
1095	--idle;
1096	}
1097
1098	--nready;
1099
1100	UNLOCK (reqlock);
1101
1102	errno = 0; /* strictly unnecessary */
1103
1104	if (!(req->flags & FLAG_CANCELLED))
1105	switch (req->type)
1106	{
1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118	case REQ_CLOSE: req->result = close (req->int1); break;
1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
1129	case REQ_READDIR: scandir_ (req, self); break;
1130
1131	case REQ_BUSY:
1132	{
1133	struct timeval tv;
1134
1135	tv.tv_sec = req->int1;
1136	tv.tv_usec = req->int2;
1137
1138	req->result = select (0, 0, 0, 0, &tv);
1139	}
1140
1141	case REQ_GROUP:
1142	case REQ_NOP:
1143	break;
1144
1145	case REQ_QUIT:
1146	goto quit;
1147
1148	default:
1149	req->result = ENOSYS;
1150	break;
1151	}
1152
1153	req->errorno = errno;
1154
1155	LOCK (reslock);
1156
1157	++npending;
1158
1159	if (!reqq_push (&res_queue, req))
1160	/* write a dummy byte to the pipe so fh becomes ready */
1161	write (respipe [1], &respipe, 1);
1162
1163	self->req = 0;
1164	worker_clear (self);
1165
1166	UNLOCK (reslock);
1167	}
1168
1169	quit:
1170	LOCK (wrklock);
1171	worker_free (self);
1172	UNLOCK (wrklock);
1173
1174	return 0;
1175	}
1176
1177	/*****************************************************************************/
1178
1179	static void atfork_prepare (void)
1180	{
1181	LOCK (wrklock);
1182	LOCK (reqlock);
1183	LOCK (reslock);
1184	#if !HAVE_PREADWRITE
1185	LOCK (preadwritelock);
1186	#endif
1187	#if !HAVE_READDIR_R
1188	LOCK (readdirlock);
1189	#endif
1190	}
1191
1192	static void atfork_parent (void)
1193	{
1194	#if !HAVE_READDIR_R
1195	UNLOCK (readdirlock);
1196	#endif
1197	#if !HAVE_PREADWRITE
1198	UNLOCK (preadwritelock);
1199	#endif
1200	UNLOCK (reslock);
1201	UNLOCK (reqlock);
1202	UNLOCK (wrklock);
1203	}
1204
1205	static void atfork_child (void)
1206	{
1207	aio_req prv;
1208
1209	while (prv = reqq_shift (&req_queue))
1210	req_free (prv);
1211
1212	while (prv = reqq_shift (&res_queue))
1213	req_free (prv);
1214
1215	while (wrk_first.next != &wrk_first)
1216	{
1217	worker *wrk = wrk_first.next;
1218
1219	if (wrk->req)
1220	req_free (wrk->req);
1221
1222	worker_clear (wrk);
1223	worker_free (wrk);
1224	}
1225
1226	started = 0;
1227	idle = 0;
1228	nreqs = 0;
1229	nready = 0;
1230	npending = 0;
1231
1232	close (respipe [0]);
1233	close (respipe [1]);
1234	create_pipe ();
1235
1236	atfork_parent ();
1237	}
1238
1239	#define dREQ \
1240	aio_req req; \
1241	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \
1243	\
1244	if (SvOK (callback) && !SvROK (callback)) \
1245	croak ("callback must be undef or of reference type"); \
1246	\
1247	Newz (0, req, 1, aio_cb); \
1248	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \
1250	\
1251	req->callback = newSVsv (callback); \
1252	req->pri = req_pri
1253
1254	#define REQ_SEND \
1255	req_send (req); \
1256	\
1257	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259
1260	MODULE = IO::AIO PACKAGE = IO::AIO	919	MODULE = IO::AIO PACKAGE = IO::AIO
1261		920
1262	PROTOTYPES: ENABLE	921	PROTOTYPES: ENABLE
1263		922
1264	BOOT:	923	BOOT:
1265	{	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
1266	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);
1267		1050
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1051	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1052	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274		1053
1275	create_pipe ();	1054	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1277	}
1278		1055
		1056	reinit ();
		1057	}
		1058
1279	void	1059	void
		1060	reinit ()
		1061	PROTOTYPE:
		1062
		1063	void
1280	max_poll_reqs (int nreqs)	1064	max_poll_reqs (unsigned int nreqs)
1281	PROTOTYPE: $	1065	PROTOTYPE: $
1282	CODE:	1066	CODE:
1283	max_poll_reqs = nreqs;	1067	eio_set_max_poll_reqs (nreqs);
1284		1068
1285	void	1069	void
1286	max_poll_time (double nseconds)	1070	max_poll_time (double nseconds)
1287	PROTOTYPE: $	1071	PROTOTYPE: $
1288	CODE:	1072	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	1073	eio_set_max_poll_time (nseconds);
1290		1074
1291	void	1075	void
1292	min_parallel (int nthreads)	1076	min_parallel (unsigned int nthreads)
1293	PROTOTYPE: $
1294
1295	void
1296	max_parallel (int nthreads)
1297	PROTOTYPE: $
1298
1299	void
1300	max_idle (int nthreads)
1301	PROTOTYPE: $	1077	PROTOTYPE: $
1302	CODE:	1078	CODE:
1303	set_max_idle (nthreads);	1079	eio_set_min_parallel (nthreads);
1304		1080
1305	int	1081	void
1306	max_outstanding (int maxreqs)	1082	max_parallel (unsigned int nthreads)
1307	PROTOTYPE: $	1083	PROTOTYPE: $
1308	CODE:	1084	CODE:
1309	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:
1310	max_outstanding = maxreqs;	1103	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		1104
1314	void	1105	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1106	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$
1321	PPCODE:	1107	PPCODE:
1322	{	1108	{
1323	dREQ;	1109	dREQ;
1324		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
1325	req->type = REQ_OPEN;	1123	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	1124	req_set_path1 (req, pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	1125	req->int1 = flags;
1329	req->mode = mode;	1126	req->int2 = mode;
1330		1127
1331	REQ_SEND;	1128	REQ_SEND;
1332	}	1129	}
1333		1130
1334	void	1131	void
1335	aio_close (fh,callback=&PL_sv_undef)	1132	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$
1339	ALIAS:	1133	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	1134	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	1135	aio_fdatasync = EIO_FDATASYNC
		1136	aio_syncfs = EIO_SYNCFS
1343	PPCODE:	1137	PPCODE:
1344	{	1138	{
		1139	int fd = s_fileno_croak (fh, 0);
1345	dREQ;	1140	dREQ;
1346		1141
1347	req->type = ix;	1142	req->type = ix;
1348	req->fh = newSVsv (fh);	1143	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1144	req->int1 = fd;
1350		1145
1351	REQ_SEND (req);	1146	REQ_SEND;
1352	}	1147	}
1353		1148
1354	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
1355	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)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	1236	ALIAS:
1363	aio_read = REQ_READ	1237	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	1238	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$
1366	PPCODE:	1239	PPCODE:
1367	{	1240	{
1368	STRLEN svlen;	1241	STRLEN svlen;
		1242	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369	char *svptr = SvPVbyte (data, svlen);	1243	char *svptr = SvPVbyte (data, svlen);
1370		1244	UV len = SvUV (length);
1371	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);
1373		1245
1374	if (dataoffset < 0)	1246	if (dataoffset < 0)
1375	dataoffset += svlen;	1247	dataoffset += svlen;
1376		1248
1377	if (dataoffset < 0 || dataoffset > svlen)	1249	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	1250	croak ("dataoffset outside of data scalar");
1379		1251
1380	if (ix == REQ_WRITE)	1252	if (ix == EIO_WRITE)
1381	{	1253	{
1382	/* write: check length and adjust. */	1254	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	1255	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	1256	len = svlen - dataoffset;
1385	}	1257	}
1386	else	1258	else
1387	{	1259	{
1388	/* read: grow scalar as necessary */	1260	/* read: check type and grow scalar as necessary */
		1261	SvUPGRADE (data, SVt_PV);
1389	svptr = SvGROW (data, length + dataoffset);	1262	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	1263	}
1391
1392	if (length < 0)
1393	croak ("length must not be negative");
1394		1264
1395	{	1265	{
1396	dREQ;	1266	dREQ;
1397		1267
1398	req->type = ix;	1268	req->type = ix;
1399	req->fh = newSVsv (fh);	1269	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1270	req->int1 = fd;
1401	: IoOFP (sv_2io (fh)));	1271	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->offs = offset;
1403	req->size = length;	1272	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	1273	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	1274	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	1275	req->stroffset = dataoffset;
1407		1276
1408	if (!SvREADONLY (data))	1277	if (!SvREADONLY (data))
1409	{	1278	{
1410	SvREADONLY_on (data);	1279	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	1280	req->flags |= FLAG_SV2_RO_OFF;
1412	}	1281	}
1413		1282
1414	REQ_SEND;	1283	REQ_SEND;
1415	}	1284	}
1416	}	1285	}
1417		1286
1418	void	1287	void
1419	aio_readlink (path,callback=&PL_sv_undef)	1288	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1420	SV8 * path	1289	ALIAS:
1421	SV * callback	1290	aio_readlink = EIO_READLINK
1422	PROTOTYPE: $$;$	1291	aio_realpath = EIO_REALPATH
1423	PPCODE:	1292	PPCODE:
1424	{	1293	{
1425	SV *data;
1426	dREQ;	1294	dREQ;
1427		1295
1428	data = newSV (NAME_MAX);
1429	SvPOK_on (data);
1430
1431	req->type = REQ_READLINK;	1296	req->type = ix;
1432	req->fh = newSVsv (path);	1297	req_set_path1 (req, pathname);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);
1434	req->sv1 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);
1436		1298
1437	REQ_SEND;	1299	REQ_SEND;
1438	}	1300	}
1439		1301
1440	void	1302	void
1441	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)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$
1448	PPCODE:	1304	PPCODE:
1449	{	1305	{
		1306	int ifd = s_fileno_croak (in_fh , 0);
		1307	int ofd = s_fileno_croak (out_fh, 1);
1450	dREQ;	1308	dREQ;
1451		1309
1452	req->type = REQ_SENDFILE;	1310	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	1311	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1312	req->int1 = ofd;
1455	req->sv2 = newSVsv (in_fh);	1313	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1314	req->int2 = ifd;
1457	req->offs = in_offset;	1315	req->offs = in_offset;
1458	req->size = length;	1316	req->size = length;
1459		1317
1460	REQ_SEND;	1318	REQ_SEND;
1461	}	1319	}
1462		1320
1463	void	1321	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1322	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$
1470	PPCODE:	1323	PPCODE:
1471	{	1324	{
		1325	int fd = s_fileno_croak (fh, 0);
1472	dREQ;	1326	dREQ;
1473		1327
1474	req->type = REQ_READAHEAD;	1328	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	1329	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1330	req->int1 = fd;
1477	req->offs = offset;	1331	req->offs = offset;
1478	req->size = length;	1332	req->size = length;
1479		1333
1480	REQ_SEND;	1334	REQ_SEND;
1481	}	1335	}
1482		1336
1483	void	1337	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	1338	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	1339	ALIAS:
1488	aio_stat = REQ_STAT	1340	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	1341	aio_lstat = EIO_LSTAT
		1342	aio_statvfs = EIO_STATVFS
1490	PPCODE:	1343	PPCODE:
1491	{	1344	{
1492	dREQ;	1345	dREQ;
1493		1346
1494	req->ptr2 = malloc (sizeof (Stat_t));	1347	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1495	if (!req->ptr2)
1496	{
1497	req_free (req);
1498	croak ("out of memory during aio_stat statdata allocation");
1499	}
1500
1501	req->flags |= FLAG_PTR2_FREE;
1502
1503	if (SvPOK (fh_or_path))
1504	{
1505	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}
1509	else
1510	{
1511	req->type = REQ_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}
1515		1348
1516	REQ_SEND;	1349	REQ_SEND;
1517	}	1350	}
1518		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
1519	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
1520	aio_unlink (pathname,callback=&PL_sv_undef)	1449	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	1450	ALIAS:
1524	aio_unlink = REQ_UNLINK	1451	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	1452	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	1453	aio_readdir = EIO_READDIR
1527	PPCODE:	1454	PPCODE:
1528	{	1455	{
1529	dREQ;	1456	dREQ;
1530		1457
1531	req->type = ix;	1458	req->type = ix;
1532	req->sv1 = newSVsv (pathname);	1459	req_set_path1 (req, pathname);
1533	req->ptr1 = SvPVbyte_nolen (req->sv1);
1534		1460
1535	REQ_SEND;	1461	REQ_SEND;
1536	}	1462	}
1537		1463
1538	void	1464	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1465	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	1466	ALIAS:
1544	aio_link = REQ_LINK	1467	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	1468	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	1469	aio_rename = EIO_RENAME
1547	PPCODE:	1470	PPCODE:
1548	{	1471	{
		1472	eio_wd wd2 = 0;
1549	dREQ;	1473	dREQ;
1550		1474
1551	req->type = ix;	1475	req->type = ix;
1552	req->fh = newSVsv (oldpath);	1476	req_set_path1 (req, oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);	1477	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1554	req->sv1 = newSVsv (newpath);	1478	req->int3 = (long)wd2;
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);
1556		1479
1557	REQ_SEND;	1480	REQ_SEND;
1558	}	1481	}
1559		1482
1560	void	1483	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1484	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562	SV8 * pathname
1563	SV * callback
1564	UV mode
1565	UV dev
1566	PPCODE:	1485	PPCODE:
1567	{	1486	{
1568	dREQ;	1487	dREQ;
1569		1488
1570	req->type = REQ_MKNOD;	1489	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	1490	req->int2 = (mode_t)mode;
1574	req->offs = dev;	1491	req->offs = dev;
		1492	req_set_path1 (req, pathname);
1575		1493
1576	REQ_SEND;	1494	REQ_SEND;
1577	}	1495	}
1578		1496
1579	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
1580	aio_busy (delay,callback=&PL_sv_undef)	1572	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	1573	PPCODE:
1584	{	1574	{
1585	dREQ;	1575	dREQ;
1586		1576
1587	req->type = REQ_BUSY;	1577	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	1578	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		1579
1591	REQ_SEND;	1580	REQ_SEND;
1592	}	1581	}
1593		1582
1594	void	1583	void
1595	aio_group (callback=&PL_sv_undef)	1584	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$
1598	PPCODE:	1585	PPCODE:
1599	{	1586	{
1600	dREQ;	1587	dREQ;
1601		1588
1602	req->type = REQ_GROUP;	1589	req->type = EIO_GROUP;
1603		1590
1604	req_send (req);	1591	req_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1592	XPUSHs (req_sv (req, aio_grp_stash));
1606	}	1593	}
1607		1594
1608	void	1595	void
1609	aio_nop (callback=&PL_sv_undef)	1596	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	1597	ALIAS:
		1598	aio_nop = EIO_NOP
		1599	aio_sync = EIO_SYNC
1611	PPCODE:	1600	PPCODE:
1612	{	1601	{
1613	dREQ;	1602	dREQ;
1614		1603
1615	req->type = REQ_NOP;	1604	req->type = ix;
1616		1605
1617	REQ_SEND;	1606	REQ_SEND;
1618	}	1607	}
1619		1608
1620	int	1609	int
1621	aioreq_pri (int pri = 0)	1610	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$
1623	CODE:	1611	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	1612	RETVAL = next_pri;
1625	if (items > 0)	1613	if (items > 0)
1626	{	1614	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	1615	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	1616	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	1617	next_pri = pri;
1630	}	1618	}
1631	OUTPUT:	1619	OUTPUT:
1632	RETVAL	1620	RETVAL
1633		1621
1634	void	1622	void
1635	aioreq_nice (int nice = 0)	1623	aioreq_nice (int nice = 0)
1636	CODE:	1624	CODE:
1637	nice = next_pri - nice;	1625	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	1626	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	1627	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	1628	next_pri = nice;
1641		1629
1642	void	1630	void
1643	flush ()	1631	flush ()
1644	PROTOTYPE:
1645	CODE:	1632	CODE:
1646	while (nreqs)	1633	while (eio_nreqs ())
1647	{	1634	{
1648	poll_wait ();	1635	poll_wait ();
1649	poll_cb ();	1636	poll_cb ();
1650	}	1637	}
1651		1638
1652	int	1639	int
1653	poll()	1640	poll ()
1654	PROTOTYPE:
1655	CODE:	1641	CODE:
1656	poll_wait ();	1642	poll_wait ();
1657	RETVAL = poll_cb ();	1643	RETVAL = poll_cb ();
1658	OUTPUT:	1644	OUTPUT:
1659	RETVAL	1645	RETVAL
1660		1646
1661	int	1647	int
1662	poll_fileno()	1648	poll_fileno ()
1663	PROTOTYPE:
1664	CODE:	1649	CODE:
1665	RETVAL = respipe [0];	1650	RETVAL = s_epipe_fd (&respipe);
1666	OUTPUT:	1651	OUTPUT:
1667	RETVAL	1652	RETVAL
1668		1653
1669	int	1654	int
1670	poll_cb(...)	1655	poll_cb (...)
1671	PROTOTYPE:	1656	PROTOTYPE:
1672	CODE:	1657	CODE:
1673	RETVAL = poll_cb ();	1658	RETVAL = poll_cb ();
1674	OUTPUT:	1659	OUTPUT:
1675	RETVAL	1660	RETVAL
1676		1661
1677	void	1662	void
1678	poll_wait()	1663	poll_wait ()
1679	PROTOTYPE:
1680	CODE:	1664	CODE:
1681	poll_wait ();	1665	poll_wait ();
1682		1666
1683	int	1667	int
1684	nreqs()	1668	nreqs ()
1685	PROTOTYPE:
1686	CODE:	1669	CODE:
1687	RETVAL = nreqs;	1670	RETVAL = eio_nreqs ();
1688	OUTPUT:	1671	OUTPUT:
1689	RETVAL	1672	RETVAL
1690		1673
1691	int	1674	int
1692	nready()	1675	nready ()
1693	PROTOTYPE:
1694	CODE:	1676	CODE:
1695	RETVAL = get_nready ();	1677	RETVAL = eio_nready ();
1696	OUTPUT:	1678	OUTPUT:
1697	RETVAL	1679	RETVAL
1698		1680
1699	int	1681	int
1700	npending()	1682	npending ()
1701	PROTOTYPE:
1702	CODE:	1683	CODE:
1703	RETVAL = get_npending ();	1684	RETVAL = eio_npending ();
1704	OUTPUT:	1685	OUTPUT:
1705	RETVAL	1686	RETVAL
1706		1687
1707	int	1688	int
1708	nthreads()	1689	nthreads ()
1709	PROTOTYPE:
1710	CODE:	1690	CODE:
1711	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1691	RETVAL = eio_nthreads ();
1712	RETVAL = started;
1713	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714	OUTPUT:	1692	OUTPUT:
1715	RETVAL	1693	RETVAL
1716		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
1717	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	}
1718		1851
1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1852	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720		1853
1721	void	1854	void
1722	cancel (aio_req_ornot req)	1855	cancel (aio_req_ornot req)
1723	CODE:	1856	CODE:
1724	req_cancel (req);	1857	eio_cancel (req);
1725		1858
1726	void	1859	void
1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1860	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728	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
1729	SvREFCNT_dec (req->callback);	1870	SvREFCNT_dec (req->callback);
1730	req->callback = newSVsv (callback);	1871	req->callback = SvREFCNT_inc (cb_cv);
		1872	}
		1873	}
1731		1874
1732	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1875	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733		1876
1734	void	1877	void
1735	add (aio_req grp, ...)	1878	add (aio_req grp, ...)
1736	PPCODE:	1879	PPCODE:
1737	{	1880	{
1738	int i;	1881	int i;
1739	aio_req req;
1740		1882
1741	if (grp->int1 == 2)	1883	if (grp->int1 == 2)
1742	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");
1743		1885
1744	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1745	{	1887	{
		1888	aio_req req;
		1889
1746	if (GIMME_V != G_VOID)	1890	if (GIMME_V != G_VOID)
1747	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1891	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748		1892
1749	req = SvAIO_REQ (ST (i));	1893	req = SvAIO_REQ (ST (i));
1750		1894
1751	if (req)	1895	if (req)
1752	{	1896	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	}	1897	}
1765	}	1898	}
1766		1899
1767	void	1900	void
1768	cancel_subs (aio_req_ornot req)	1901	cancel_subs (aio_req_ornot req)
…		…
1777	AV *av;	1910	AV *av;
1778		1911
1779	grp->errorno = errno;	1912	grp->errorno = errno;
1780		1913
1781	av = newAV ();	1914	av = newAV ();
		1915	av_extend (av, items - 1);
1782		1916
1783	for (i = 1; i < items; ++i )	1917	for (i = 1; i < items; ++i )
1784	av_push (av, newSVsv (ST (i)));	1918	av_push (av, newSVsv (ST (i)));
1785		1919
1786	SvREFCNT_dec (grp->sv1);	1920	SvREFCNT_dec (grp->sv1);
…		…
1793	grp->errorno = errorno;	1927	grp->errorno = errorno;
1794		1928
1795	void	1929	void
1796	limit (aio_req grp, int limit)	1930	limit (aio_req grp, int limit)
1797	CODE:	1931	CODE:
1798	grp->int2 = limit;	1932	eio_grp_limit (grp, limit);
1799	aio_grp_feed (grp);
1800		1933
1801	void	1934	void
1802	feed (aio_req grp, SV *callback=&PL_sv_undef)	1935	feed (aio_req grp, SV *callback=&PL_sv_undef)
1803	CODE:	1936	CODE:
1804	{	1937	{
1805	SvREFCNT_dec (grp->sv2);	1938	SvREFCNT_dec (grp->sv2);
1806	grp->sv2 = newSVsv (callback);	1939	grp->sv2 = newSVsv (callback);
		1940	grp->feed = aio_grp_feed;
1807		1941
1808	if (grp->int2 <= 0)	1942	if (grp->int2 <= 0)
1809	grp->int2 = 2;	1943	grp->int2 = 2;
1810		1944
1811	aio_grp_feed (grp);	1945	eio_grp_limit (grp, grp->int2);
1812	}	1946	}
1813		1947

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