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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC vs.
Revision 1.195 by root, Mon Sep 26 20:19:08 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
22	#include <stdlib.h>	12	#include <stdlib.h>
23	#include <errno.h>	13	#include <errno.h>
24	#include <sys/time.h>
25	#include <sys/select.h>
26	#include <sys/types.h>	14	#include <sys/types.h>
27	#include <sys/stat.h>	15	#include <sys/stat.h>
28	#include <limits.h>	16	#include <limits.h>
29	#include <unistd.h>
30	#include <fcntl.h>	17	#include <fcntl.h>
31	#include <signal.h>
32	#include <sched.h>	18	#include <sched.h>
33		19
34	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
35	# if __linux
36	# include <sys/sendfile.h>
37	# elif __freebsd
38	# include <sys/socket.h>
39	# include <sys/uio.h>	21	# include <sys/mman.h>
40	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
41	# include <sys/socket.h>	69	#include <sys/time.h>
42	# elif __solaris /* not yet */
43	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
44	# else	295	# else
45	# error sendfile support requested but not available	296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46	# endif	297	# endif
47	#endif	298	#endif
48		299	#ifndef MAP_HUGETLB
49	/* number of seconds after which idle threads exit */	300	# define MAP_HUGETLB 0
50	#define IDLE_TIMEOUT 10
51
52	/* used for struct dirent, AIX doesn't provide it */
53	#ifndef NAME_MAX
54	# define NAME_MAX 4096
55	#endif
56
57	#ifndef PTHREAD_STACK_MIN
58	/* care for broken platforms, e.g. windows */
59	# define PTHREAD_STACK_MIN 16384
60	#endif
61
62	#if __ia64
63	# define STACKSIZE 65536
64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65	# define STACKSIZE PTHREAD_STACK_MIN
66	#else
67	# define STACKSIZE 16384
68	#endif
69
70	/* wether word reads are potentially non-atomic.
71	* this is conservatice, likely most arches this runs
72	* on have atomic word read/writes.
73	*/
74	#ifndef WORDACCESS_UNSAFE
75	# if __i386 || __x86_64
76	# define WORDACCESS_UNSAFE 0
77	# else
78	# define WORDACCESS_UNSAFE 1
79	# endif	301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
80	#endif	304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
81		314
82	/* buffer size for various temporary buffers */	315	#ifndef makedev
83	#define AIO_BUFSIZE 65536	316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
84		324
85	#define dBUF \	325	#ifndef PAGESIZE
86	char *aio_buf; \	326	# define PAGESIZE sysconf (_SC_PAGESIZE)
87	LOCK (wrklock); \	327	#endif
88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
89	UNLOCK (wrklock); \
90	if (!aio_buf) \
91	return -1;
92
93	typedef SV SV8; /* byte-sv, used for argument-checking */
94		328
95	enum {	329	enum {
96	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
97	REQ_OPEN, REQ_CLOSE,
98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
99	REQ_SENDFILE,
100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101	REQ_FSYNC, REQ_FDATASYNC,
102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
103	REQ_MKNOD, REQ_READDIR,
104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105	REQ_GROUP, REQ_NOP,
106	REQ_BUSY,
107	};	331	};
108		332
109	#define AIO_REQ_KLASS "IO::AIO::REQ"
110	#define AIO_GRP_KLASS "IO::AIO::GRP"
111
112	typedef struct aio_cb
113	{
114	struct aio_cb *volatile next;
115
116	SV *callback, *fh;
117	SV *sv1, *sv2;
118	void *ptr1, *ptr2;
119	off_t offs;
120	size_t size;
121	ssize_t result;
122
123	STRLEN stroffset;
124	int type;
125	int int1, int2;
126	int errorno;
127	mode_t mode; /* open */
128
129	unsigned char flags;
130	unsigned char pri;
131
132	SV *self; /* the perl counterpart of this request, if any */
133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
134	} aio_cb;
135
136	enum {
137	FLAG_CANCELLED = 0x01, /* request was cancelled */
138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140	};
141
142	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
		335	typedef eio_wd *aio_wd;
144		336
145	enum {	337	static SV *on_next_submit;
146	PRI_MIN = -4,	338	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	339	static int max_outstanding;
148		340
149	DEFAULT_PRI = 0,	341	static s_epipe respipe;
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		342
154	#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156	static unsigned int max_poll_time = 0;
157	static unsigned int max_poll_reqs = 0;
158
159	/* calculcate time difference in ~1/AIO_TICKS of a second */
160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161	{
162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
164	}
165
166	static pthread_t main_tid;
167	static int main_sig;
168	static int block_sig_level;
169
170	void block_sig ()
171	{
172	sigset_t ss;
173
174	if (block_sig_level++)
175	return;
176
177	if (!main_sig)
178	return;
179
180	sigemptyset (&ss);
181	sigaddset (&ss, main_sig);
182	pthread_sigmask (SIG_BLOCK, &ss, 0);
183	}
184
185	void unblock_sig ()
186	{
187	sigset_t ss;
188
189	if (--block_sig_level)
190	return;
191
192	if (!main_sig)
193	return;
194
195	sigemptyset (&ss);
196	sigaddset (&ss, main_sig);
197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198	}
199
200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202	static unsigned int started, idle, wanted;
203
204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206	#else
207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208	#endif
209
210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213	/* worker threads management */
214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216	typedef struct worker {
217	/* locked by wrklock */
218	struct worker *prev, *next;
219
220	pthread_t tid;
221
222	/* locked by reslock, reqlock or wrklock */
223	aio_req req; /* currently processed request */
224	void *dbuf;
225	DIR *dirp;
226	} worker;
227
228	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230	static void worker_clear (worker *wrk)
231	{
232	if (wrk->dirp)
233	{
234	closedir (wrk->dirp);
235	wrk->dirp = 0;
236	}
237
238	if (wrk->dbuf)
239	{
240	free (wrk->dbuf);
241	wrk->dbuf = 0;
242	}
243	}
244
245	static void worker_free (worker *wrk)
246	{
247	wrk->next->prev = wrk->prev;
248	wrk->prev->next = wrk->next;
249
250	free (wrk);
251	}
252
253	static volatile unsigned int nreqs, nready, npending;
254	static volatile unsigned int max_idle = 4;
255	static volatile unsigned int max_outstanding = 0xffffffff;
256	static int respipe [2];
257
258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262	#if WORDACCESS_UNSAFE
263
264	static unsigned int get_nready ()
265	{
266	unsigned int retval;
267
268	LOCK (reqlock);
269	retval = nready;
270	UNLOCK (reqlock);
271
272	return retval;
273	}
274
275	static unsigned int get_npending ()
276	{
277	unsigned int retval;
278
279	LOCK (reslock);
280	retval = npending;
281	UNLOCK (reslock);
282
283	return retval;
284	}
285
286	static unsigned int get_nthreads ()
287	{
288	unsigned int retval;
289
290	LOCK (wrklock);
291	retval = started;
292	UNLOCK (wrklock);
293
294	return retval;
295	}
296
297	#else
298
299	# define get_nready() nready
300	# define get_npending() npending
301	# define get_nthreads() started
302
303	#endif
304
305	/*
306	* a somewhat faster data structure might be nice, but
307	* with 8 priorities this actually needs <20 insns
308	* per shift, the most expensive operation.
309	*/
310	typedef struct {
311	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312	int size;
313	} reqq;
314
315	static reqq req_queue;
316	static reqq res_queue;
317
318	int reqq_push (reqq *q, aio_req req)
319	{
320	int pri = req->pri;
321	req->next = 0;
322
323	if (q->qe[pri])
324	{
325	q->qe[pri]->next = req;
326	q->qe[pri] = req;
327	}
328	else
329	q->qe[pri] = q->qs[pri] = req;
330
331	return q->size++;
332	}
333
334	aio_req reqq_shift (reqq *q)
335	{
336	int pri;
337
338	if (!q->size)
339	return 0;
340
341	--q->size;
342
343	for (pri = NUM_PRI; pri--; )
344	{
345	aio_req req = q->qs[pri];
346
347	if (req)
348	{
349	if (!(q->qs[pri] = req->next))
350	q->qe[pri] = 0;
351
352	return req;
353	}
354	}
355
356	abort ();
357	}
358
359	static int poll_cb ();
360	static int req_invoke (aio_req req);
361	static void req_free (aio_req req);	343	static void req_destroy (aio_req req);
362	static void req_cancel (aio_req req);	344	static void req_cancel (aio_req req);
363		345
		346	static void want_poll (void)
		347	{
		348	/* write a dummy byte to the pipe so fh becomes ready */
		349	s_epipe_signal (&respipe);
		350	}
		351
		352	static void done_poll (void)
		353	{
		354	/* read any signals sent by the worker threads */
		355	s_epipe_drain (&respipe);
		356	}
		357
364	/* must be called at most once */	358	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	359	static SV *req_sv (aio_req req, HV *stash)
366	{	360	{
367	if (!req->self)	361	if (!req->self)
368	{	362	{
369	req->self = (SV *)newHV ();	363	req->self = (SV *)newHV ();
370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	364	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371	}	365	}
372		366
373	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	367	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374	}	368	}
375		369
376	static aio_req SvAIO_REQ (SV *sv)	370	static aio_req SvAIO_REQ (SV *sv)
377	{	371	{
378	MAGIC *mg;	372	MAGIC *mg;
379		373
380	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	374	if (!SvROK (sv)
		375	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		376	&& SvSTASH (SvRV (sv)) != aio_req_stash
		377	&& !sv_derived_from (sv, "IO::AIO::REQ")))
381	croak ("object of class " AIO_REQ_KLASS " expected");	378	croak ("object of class IO::AIO::REQ expected");
382		379
383	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	380	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384		381
385	return mg ? (aio_req)mg->mg_ptr : 0;	382	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	383	}
387		384
		385	static aio_wd SvAIO_WD (SV *sv)
		386	{
		387	if (!SvROK (sv)
		388	|| SvSTASH (SvRV (sv)) != aio_wd_stash
		389	|| SvTYPE (SvRV (sv)) != SVt_PVMG)
		390	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		391
		392	return (aio_wd)(long)SvIVX (SvRV (sv));
		393	}
		394
388	static void aio_grp_feed (aio_req grp)	395	static void aio_grp_feed (aio_req grp)
389	{	396	{
390	block_sig ();	397	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	398	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	399	dSP;
399		400
400	ENTER;	401	ENTER;
401	SAVETMPS;	402	SAVETMPS;
402	PUSHMARK (SP);	403	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	404	XPUSHs (req_sv (grp, aio_grp_stash));
404	PUTBACK;	405	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	406	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	407	SPAGAIN;
407	FREETMPS;	408	FREETMPS;
408	LEAVE;	409	LEAVE;
409	}
410
411	/* stop if no progress has been made */
412	if (old_len == grp->size)
413	{
414	SvREFCNT_dec (grp->sv2);
415	grp->sv2 = 0;
416	break;
417	}
418	}	410	}
419
420	unblock_sig ();
421	}	411	}
422		412
423	static void aio_grp_dec (aio_req grp)	413	static void req_submit (eio_req *req)
424	{	414	{
425	--grp->size;	415	eio_submit (req);
426		416
427	/* call feeder, if applicable */	417	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	418	{
433	block_sig ();	419	dSP;
		420	SV *cb = sv_2mortal (on_next_submit);
434		421
435	if (!req_invoke (grp))	422	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		423
442	req_free (grp);	424	PUSHMARK (SP);
443	unblock_sig ();	425	PUTBACK;
		426	call_sv (cb, G_DISCARD | G_EVAL);
444	}	427	}
445	}	428	}
446		429
447	static int req_invoke (aio_req req)	430	static int req_invoke (eio_req *req)
448	{	431	{
449	dSP;
450
451	if (req->flags & FLAG_SV1_RO_OFF)	432	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	433	SvREADONLY_off (req->sv2);
453		434
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	435	if (!EIO_CANCELLED (req) && req->callback)
455	{	436	{
		437	dSP;
		438	static SV *sv_result_cache; /* caches the result integer SV */
		439	SV *sv_result;
		440
456	ENTER;	441	ENTER;
457	SAVETMPS;	442	SAVETMPS;
458	PUSHMARK (SP);	443	PUSHMARK (SP);
459	EXTEND (SP, 1);	444	EXTEND (SP, 1);
460		445
		446	/* do not recreate the result IV from scratch each time */
		447	if (expect_true (sv_result_cache))
		448	{
		449	sv_result = sv_result_cache; sv_result_cache = 0;
		450	SvIV_set (sv_result, req->result);
		451	SvIOK_only (sv_result);
		452	}
		453	else
		454	{
		455	sv_result = newSViv (req->result);
		456	SvREADONLY_on (sv_result);
		457	}
		458
461	switch (req->type)	459	switch (req->type)
462	{	460	{
		461	case EIO_WD_OPEN:
		462	PUSHs (sv_2mortal (sv_bless (newRV_noinc (newSViv (((long)req->wd))), aio_wd_stash)));
		463	break;
		464
463	case REQ_READDIR:	465	case EIO_READDIR:
464	{	466	{
465	SV *rv = &PL_sv_undef;	467	SV *rv = &PL_sv_undef;
466		468
467	if (req->result >= 0)	469	if (req->result >= 0)
468	{	470	{
469	int i;	471	int i;
470	char *buf = req->ptr2;	472	char *names = (char *)req->ptr2;
		473	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471	AV *av = newAV ();	474	AV *av = newAV ();
472		475
473	av_extend (av, req->result - 1);	476	av_extend (av, req->result - 1);
474		477
475	for (i = 0; i < req->result; ++i)	478	for (i = 0; i < req->result; ++i)
476	{	479	{
477	SV *sv = newSVpv (buf, 0);	480	if (req->int1 & EIO_READDIR_DENTS)
		481	{
		482	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478		483
		484	if (req->int1 & EIO_READDIR_CUSTOM2)
		485	{
		486	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		487	AV *avent = newAV ();
		488
		489	av_extend (avent, 2);
		490
		491	if (!sv_type [ent->type])
		492	{
		493	sv_type [ent->type] = newSViv (ent->type);
		494	SvREADONLY_on (sv_type [ent->type]);
		495	}
		496
		497	av_store (avent, 0, namesv);
		498	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		499	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		500
		501	av_store (av, i, newRV_noinc ((SV *)avent));
		502	}
		503	else
479	av_store (av, i, sv);	504	av_store (av, i, namesv);
		505
		506	++ent;
		507	}
		508	else
		509	{
		510	SV *name = newSVpv (names, 0);
		511	av_store (av, i, name);
480	buf += SvCUR (sv) + 1;	512	names += SvCUR (name) + 1;
		513	}
481	}	514	}
482		515
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	516	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	517	}
485		518
486	PUSHs (rv);	519	PUSHs (rv);
		520
		521	if (req->int1 & EIO_READDIR_CUSTOM1)
		522	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487	}	523	}
488	break;	524	break;
489		525
490	case REQ_OPEN:	526	case EIO_OPEN:
491	{	527	{
492	/* convert fd to fh */	528	/* convert fd to fh */
493	SV *fh;	529	SV *fh = &PL_sv_undef;
494		530
495	PUSHs (sv_2mortal (newSViv (req->result)));	531	if (req->result >= 0)
496	PUTBACK;	532	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	533	GV *gv = (GV *)sv_newmortal ();
498	SPAGAIN;	534	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		535	char sym [64];
		536	int symlen;
		537
		538	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		539	gv_init (gv, aio_stash, sym, symlen, 0);
499		540
500	fh = POPs;	541	symlen = snprintf (
501	PUSHMARK (SP);	542	sym,
		543	sizeof (sym),
		544	"%s&=%d",
		545	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		546	(int)req->result
		547	);
		548
		549	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		550	fh = (SV *)gv;
		551	}
		552
502	XPUSHs (fh);	553	PUSHs (fh);
503	}	554	}
504	break;	555	break;
505		556
		557	case EIO_STATVFS:
		558	case EIO_FSTATVFS:
		559	{
		560	SV *rv = &PL_sv_undef;
		561
		562	#ifndef _WIN32
		563	if (req->result >= 0)
		564	{
		565	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		566	HV *hv = newHV ();
		567
		568	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		569
		570	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		571	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		572	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		573	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		574	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		575	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		576	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		577	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		578	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		579	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		580	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		581	}
		582	#endif
		583
		584	PUSHs (rv);
		585	}
		586
		587	break;
		588
506	case REQ_GROUP:	589	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	590	req->int1 = 2; /* mark group as finished */
508		591
509	if (req->sv1)	592	if (req->sv1)
510	{	593	{
511	int i;	594	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	598	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	599	PUSHs (*av_fetch (av, i, 0));
517	}	600	}
518	break;	601	break;
519		602
520	case REQ_NOP:	603	case EIO_NOP:
521	case REQ_BUSY:	604	case EIO_BUSY:
522	break;	605	break;
523		606
524	case REQ_READLINK:	607	case EIO_READLINK:
		608	case EIO_REALPATH:
525	if (req->result > 0)	609	if (req->result > 0)
526	{	610	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
527	SvCUR_set (req->sv1, req->result);
528	*SvEND (req->sv1) = 0;
529	PUSHs (req->sv1);
530	}
531	break;	611	break;
532		612
533	case REQ_STAT:	613	case EIO_STAT:
534	case REQ_LSTAT:	614	case EIO_LSTAT:
535	case REQ_FSTAT:	615	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	616	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	617	PL_laststatval = req->result;
		618	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
538	PL_statcache = *(Stat_t *)(req->ptr2);	619	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	620	PUSHs (sv_result);
540	break;	621	break;
541		622
542	case REQ_READ:	623	case EIO_READ:
		624	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	625	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	626	*SvEND (req->sv2) = 0;
545	PUSHs (sv_2mortal (newSViv (req->result)));	627	SvPOK_only (req->sv2);
		628	SvSETMAGIC (req->sv2);
		629	PUSHs (sv_result);
		630	}
546	break;	631	break;
547		632
		633	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		634	if (req->result > 0)
		635	SvIV_set (sv_result, 0);
		636	/* FALLTHROUGH */
		637
548	default:	638	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	639	PUSHs (sv_result);
550	break;	640	break;
551	}	641	}
552		642
553	errno = req->errorno;	643	errno = req->errorno;
554		644
555	PUTBACK;	645	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	646	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	647	SPAGAIN;
		648
		649	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		650	SvREFCNT_dec (sv_result);
		651	else
		652	sv_result_cache = sv_result;
558		653
559	FREETMPS;	654	FREETMPS;
560	LEAVE;	655	LEAVE;
		656
		657	PUTBACK;
561	}	658	}
562		659
563	if (req->grp)
564	{
565	aio_req grp = req->grp;
566
567	/* unlink request */
568	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571	if (grp->grp_first == req)
572	grp->grp_first = req->grp_next;
573
574	aio_grp_dec (grp);
575	}
576
577	return !SvTRUE (ERRSV);	660	return !!SvTRUE (ERRSV);
578	}	661	}
579		662
580	static void req_free (aio_req req)	663	static void req_destroy (aio_req req)
581	{	664	{
582	if (req->self)	665	if (req->self)
583	{	666	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	667	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	668	SvREFCNT_dec (req->self);
586	}	669	}
587		670
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	671	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	672	SvREFCNT_dec (req->sv2);
		673	SvREFCNT_dec (req->sv3);
		674	SvREFCNT_dec (req->sv4);
591	SvREFCNT_dec (req->callback);	675	SvREFCNT_dec (req->callback);
592		676
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	677	Safefree (req);
597	}	678	}
598		679
599	static void req_cancel_subs (aio_req grp)	680	static void req_cancel_subs (aio_req grp)
600	{	681	{
601	aio_req sub;
602
603	if (grp->type != REQ_GROUP)	682	if (grp->type != EIO_GROUP)
604	return;	683	return;
605		684
606	SvREFCNT_dec (grp->sv2);	685	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	686	grp->sv2 = 0;
608		687
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	688	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	689	}
612		690
613	static void req_cancel (aio_req req)	691	static void create_respipe (void)
614	{	692	{
615	req->flags |= FLAG_CANCELLED;	693	if (s_epipe_renew (&respipe))
616		694	croak ("IO::AIO: unable to initialize result pipe");
617	req_cancel_subs (req);
618	}	695	}
619		696
620	static void *aio_proc(void *arg);
621
622	static void start_thread (void)
623	{
624	sigset_t fullsigset, oldsigset;
625	pthread_attr_t attr;
626
627	worker *wrk = calloc (1, sizeof (worker));
628
629	if (!wrk)
630	croak ("unable to allocate worker thread data");
631
632	pthread_attr_init (&attr);
633	pthread_attr_setstacksize (&attr, STACKSIZE);
634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635	#ifdef PTHREAD_SCOPE_PROCESS
636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637	#endif
638
639	sigfillset (&fullsigset);
640
641	LOCK (wrklock);
642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
643
644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
645	{
646	wrk->prev = &wrk_first;
647	wrk->next = wrk_first.next;
648	wrk_first.next->prev = wrk;
649	wrk_first.next = wrk;
650	++started;
651	}
652	else
653	free (wrk);
654
655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
656	UNLOCK (wrklock);
657	}
658
659	static void maybe_start_thread ()
660	{
661	if (get_nthreads () >= wanted)
662	return;
663
664	/* todo: maybe use idle here, but might be less exact */
665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666	return;
667
668	start_thread ();
669	}
670
671	static void req_send (aio_req req)
672	{
673	block_sig ();
674
675	++nreqs;
676
677	LOCK (reqlock);
678	++nready;
679	reqq_push (&req_queue, req);
680	pthread_cond_signal (&reqwait);
681	UNLOCK (reqlock);
682
683	unblock_sig ();
684
685	maybe_start_thread ();
686	}
687
688	static void end_thread (void)
689	{
690	aio_req req;
691
692	Newz (0, req, 1, aio_cb);
693
694	req->type = REQ_QUIT;
695	req->pri = PRI_MAX + PRI_BIAS;
696
697	LOCK (reqlock);
698	reqq_push (&req_queue, req);
699	pthread_cond_signal (&reqwait);
700	UNLOCK (reqlock);
701
702	LOCK (wrklock);
703	--started;
704	UNLOCK (wrklock);
705	}
706
707	static void set_max_idle (int nthreads)
708	{
709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
710	max_idle = nthreads <= 0 ? 1 : nthreads;
711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712	}
713
714	static void min_parallel (int nthreads)
715	{
716	if (wanted < nthreads)
717	wanted = nthreads;
718	}
719
720	static void max_parallel (int nthreads)
721	{
722	if (wanted > nthreads)
723	wanted = nthreads;
724
725	while (started > wanted)
726	end_thread ();
727	}
728
729	static void poll_wait ()	697	static void poll_wait (void)
730	{	698	{
731	fd_set rfd;
732
733	while (nreqs)	699	while (eio_nreqs ())
734	{	700	{
735	int size;	701	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	702
		703	X_LOCK (reslock);
737	size = res_queue.size;	704	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	705	X_UNLOCK (reslock);
739		706
740	if (size)	707	if (size)
741	return;	708	return;
742		709
743	maybe_start_thread ();	710	etp_maybe_start_thread ();
744		711
745	FD_ZERO(&rfd);	712	s_epipe_wait (&respipe);
746	FD_SET(respipe [0], &rfd);
747
748	select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	713	}
750	}	714	}
751		715
752	static int poll_cb ()	716	static int poll_cb (void)
753	{	717	{
754	dSP;
755	int count = 0;
756	int maxreqs = max_poll_reqs;
757	int do_croak = 0;
758	struct timeval tv_start, tv_now;
759	aio_req req;
760
761	if (max_poll_time)
762	gettimeofday (&tv_start, 0);
763
764	block_sig ();
765
766	for (;;)	718	for (;;)
767	{	719	{
768	for (;;)	720	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		721
772	LOCK (reslock);	722	if (res > 0)
773	req = reqq_shift (&res_queue);
774
775	if (req)
776	{
777	--npending;
778
779	if (!res_queue.size)
780	{
781	/* read any signals sent by the worker threads */
782	char buf [4];
783	while (read (respipe [0], buf, 4) == 4)
784	;
785	}
786	}
787
788	UNLOCK (reslock);
789
790	if (!req)
791	break;
792
793	--nreqs;
794
795	if (req->type == REQ_GROUP && req->size)
796	{
797	req->int1 = 1; /* mark request as delayed */
798	continue;
799	}
800	else
801	{
802	if (!req_invoke (req))
803	{
804	req_free (req);
805	unblock_sig ();
806	croak (0);	723	croak (0);
807	}
808		724
809	count++;	725	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	726	return res;
811
812	req_free (req);
813
814	if (maxreqs && !--maxreqs)
815	break;
816
817	if (max_poll_time)
818	{
819	gettimeofday (&tv_now, 0);
820
821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822	break;
823	}
824	}
825
826	if (nreqs <= max_outstanding)
827	break;
828		727
829	poll_wait ();	728	poll_wait ();
830
831	++maxreqs;
832	}	729	}
833
834	unblock_sig ();
835	return count;
836	}	730	}
837		731
838	static void create_pipe ()	732	static void ecb_cold
		733	reinit (void)
839	{	734	{
840	if (pipe (respipe))	735	create_respipe ();
841	croak ("unable to initialize result pipe");
842		736
843	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	737	if (eio_init (want_poll, done_poll) < 0)
844	croak ("cannot set result pipe to nonblocking mode");	738	croak ("IO::AIO: unable to initialise eio library");
845
846	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847	croak ("cannot set result pipe to nonblocking mode");
848	}	739	}
849		740
850	/*****************************************************************************/	741	/*****************************************************************************/
851	/* work around various missing functions */
852		742
853	#if !HAVE_PREADWRITE	743	#if !_POSIX_MAPPED_FILES
854	# define pread aio_pread	744	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
855	# define pwrite aio_pwrite	745	# define munmap(addr,length) (errno = ENOSYS, -1)
856
857	/*
858	* make our pread/pwrite safe against themselves, but not against
859	* normal read/write by using a mutex. slows down execution a lot,
860	* but that's your problem, not mine.
861	*/
862	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865	{
866	ssize_t res;
867	off_t ooffset;
868
869	LOCK (preadwritelock);
870	ooffset = lseek (fd, 0, SEEK_CUR);
871	lseek (fd, offset, SEEK_SET);
872	res = read (fd, buf, count);
873	lseek (fd, ooffset, SEEK_SET);
874	UNLOCK (preadwritelock);
875
876	return res;
877	}
878
879	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
880	{
881	ssize_t res;
882	off_t ooffset;
883
884	LOCK (preadwritelock);
885	ooffset = lseek (fd, 0, SEEK_CUR);
886	lseek (fd, offset, SEEK_SET);
887	res = write (fd, buf, count);
888	lseek (fd, offset, SEEK_SET);
889	UNLOCK (preadwritelock);
890
891	return res;
892	}
893	#endif
894
895	#if !HAVE_FDATASYNC
896	# define fdatasync fsync
897	#endif
898
899	#if !HAVE_READAHEAD
900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901
902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
903	{
904	dBUF;
905
906	while (count > 0)
907	{
908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909
910	pread (fd, aio_buf, len, offset);
911	offset += len;
912	count -= len;
913	}
914
915	errno = 0;
916	}
917
918	#endif
919
920	#if !HAVE_READDIR_R
921	# define readdir_r aio_readdir_r
922
923	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926	{
927	struct dirent *e;
928	int errorno;
929
930	LOCK (readdirlock);
931
932	e = readdir (dirp);
933	errorno = errno;
934
935	if (e)
936	{
937	*res = ent;
938	strcpy (ent->d_name, e->d_name);
939	}
940	else
941	*res = 0;
942
943	UNLOCK (readdirlock);
944
945	errno = errorno;
946	return e ? 0 : -1;
947	}
948	#endif
949
950	/* sendfile always needs emulation */
951	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
952	{
953	ssize_t res;
954
955	if (!count)
956	return 0;
957
958	#if HAVE_SENDFILE
959	# if __linux
960	res = sendfile (ofd, ifd, &offset, count);
961
962	# elif __freebsd
963	/*
964	* Of course, the freebsd sendfile is a dire hack with no thoughts
965	* wasted on making it similar to other I/O functions.
966	*/
967	{
968	off_t sbytes;
969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970
971	if (res < 0 && sbytes)
972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
973	res = sbytes;
974	}
975
976	# elif __hpux
977	res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979	# elif __solaris
980	{
981	struct sendfilevec vec;
982	size_t sbytes;
983
984	vec.sfv_fd = ifd;
985	vec.sfv_flag = 0;
986	vec.sfv_off = offset;
987	vec.sfv_len = count;
988
989	res = sendfilev (ofd, &vec, 1, &sbytes);
990
991	if (res < 0 && sbytes)
992	res = sbytes;
993	}
994
995	# endif	746	#endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000		747
1001	if (res < 0	748	#if !_POSIX_MEMORY_PROTECTION
1002	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	749	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1003	#if __solaris	750	# define PROT_NONE 0
1004	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	751	# define PROT_WRITE 0
		752	# define MAP_PRIVATE 0
		753	# define MAP_SHARED 0
		754	# define MAP_FIXED 0
1005	#endif	755	#endif
1006	)
1007	)
1008	{
1009	/* emulate sendfile. this is a major pain in the ass */
1010	dBUF;
1011		756
1012	res = 0;	757	#define MMAP_MAGIC PERL_MAGIC_ext
1013		758
1014	while (count)	759	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
1015	{	760	{
1016	ssize_t cnt;	761	int old_errno = errno;
1017		762	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	763	errno = old_errno;
1019		764
1020	if (cnt <= 0)	765	mg->mg_obj = 0; /* just in case */
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025		766
1026	cnt = write (ofd, aio_buf, cnt);	767	SvREADONLY_off (sv);
1027		768
1028	if (cnt <= 0)	769	if (SvPVX (sv) != mg->mg_ptr)
1029	{	770	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1030	if (cnt && !res) res = -1;
1031	break;
1032	}
1033		771
1034	offset += cnt;	772	SvCUR_set (sv, 0);
1035	res += cnt;	773	SvPVX (sv) = 0;
1036	count -= cnt;	774	SvOK_off (sv);
1037	}
1038	}
1039		775
1040	return res;	776	return 0;
1041	}	777	}
1042		778
1043	/* read a full directory */	779	static MGVTBL mmap_vtbl = {
1044	static void scandir_ (aio_req req, worker *self)	780	0, 0, 0, 0, mmap_free
1045	{	781	};
1046	DIR *dirp;
1047	union
1048	{
1049	struct dirent d;
1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051	} *u;
1052	struct dirent *entp;
1053	char *name, *names;
1054	int memlen = 4096;
1055	int memofs = 0;
1056	int res = 0;
1057	int errorno;
1058
1059	LOCK (wrklock);
1060	self->dirp = dirp = opendir (req->ptr1);
1061	self->dbuf = u = malloc (sizeof (*u));
1062	req->flags |= FLAG_PTR2_FREE;
1063	req->ptr2 = names = malloc (memlen);
1064	UNLOCK (wrklock);
1065
1066	if (dirp && u && names)
1067	for (;;)
1068	{
1069	errno = 0;
1070	readdir_r (dirp, &u->d, &entp);
1071
1072	if (!entp)
1073	break;
1074
1075	name = entp->d_name;
1076
1077	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078	{
1079	int len = strlen (name) + 1;
1080
1081	res++;
1082
1083	while (memofs + len > memlen)
1084	{
1085	memlen *= 2;
1086	LOCK (wrklock);
1087	req->ptr2 = names = realloc (names, memlen);
1088	UNLOCK (wrklock);
1089
1090	if (!names)
1091	break;
1092	}
1093
1094	memcpy (names + memofs, name, len);
1095	memofs += len;
1096	}
1097	}
1098
1099	if (errno)
1100	res = -1;
1101
1102	req->result = res;
1103	}
1104		782
1105	/*****************************************************************************/	783	/*****************************************************************************/
1106		784
1107	static void *aio_proc (void *thr_arg)	785	static SV * get_cb (SV *cb_sv)
1108	{	786	{
1109	aio_req req;	787	SvGETMAGIC (cb_sv);
1110	struct timespec ts;	788	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1111	worker *self = (worker *)thr_arg;
1112
1113	/* try to distribute timeouts somewhat evenly */
1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115	* (1000000000UL / 1024UL);
1116
1117	for (;;)
1118	{
1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121	LOCK (reqlock);
1122
1123	for (;;)
1124	{
1125	self->req = req = reqq_shift (&req_queue);
1126
1127	if (req)
1128	break;
1129
1130	++idle;
1131
1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133	== ETIMEDOUT)
1134	{
1135	if (idle > max_idle)
1136	{
1137	--idle;
1138	UNLOCK (reqlock);
1139	LOCK (wrklock);
1140	--started;
1141	UNLOCK (wrklock);
1142	goto quit;
1143	}
1144
1145	/* we are allowed to idle, so do so without any timeout */
1146	pthread_cond_wait (&reqwait, &reqlock);
1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148	}
1149
1150	--idle;
1151	}
1152
1153	--nready;
1154
1155	UNLOCK (reqlock);
1156
1157	errno = 0; /* strictly unnecessary */
1158
1159	if (!(req->flags & FLAG_CANCELLED))
1160	switch (req->type)
1161	{
1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173	case REQ_CLOSE: req->result = close (req->int1); break;
1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1179	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1180	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1181	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1182
1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
1185	case REQ_READDIR: scandir_ (req, self); break;
1186
1187	case REQ_BUSY:
1188	{
1189	struct timeval tv;
1190
1191	tv.tv_sec = req->int1;
1192	tv.tv_usec = req->int2;
1193
1194	req->result = select (0, 0, 0, 0, &tv);
1195	}
1196
1197	case REQ_GROUP:
1198	case REQ_NOP:
1199	break;
1200
1201	case REQ_QUIT:
1202	goto quit;
1203
1204	default:
1205	req->result = ENOSYS;
1206	break;
1207	}
1208
1209	req->errorno = errno;
1210
1211	LOCK (reslock);
1212
1213	++npending;
1214
1215	if (!reqq_push (&res_queue, req))
1216	{
1217	/* write a dummy byte to the pipe so fh becomes ready */
1218	write (respipe [1], &respipe, 1);
1219
1220	/* optionally signal the main thread asynchronously */
1221	if (main_sig)
1222	pthread_kill (main_tid, main_sig);
1223	}
1224
1225	self->req = 0;
1226	worker_clear (self);
1227
1228	UNLOCK (reslock);
1229	}
1230
1231	quit:
1232	LOCK (wrklock);
1233	worker_free (self);
1234	UNLOCK (wrklock);
1235
1236	return 0;
1237	}
1238
1239	/*****************************************************************************/
1240
1241	static void atfork_prepare (void)
1242	{
1243	LOCK (wrklock);
1244	LOCK (reqlock);
1245	LOCK (reslock);
1246	#if !HAVE_PREADWRITE
1247	LOCK (preadwritelock);
1248	#endif
1249	#if !HAVE_READDIR_R
1250	LOCK (readdirlock);
1251	#endif
1252	}
1253
1254	static void atfork_parent (void)
1255	{
1256	#if !HAVE_READDIR_R
1257	UNLOCK (readdirlock);
1258	#endif
1259	#if !HAVE_PREADWRITE
1260	UNLOCK (preadwritelock);
1261	#endif
1262	UNLOCK (reslock);
1263	UNLOCK (reqlock);
1264	UNLOCK (wrklock);
1265	}
1266
1267	static void atfork_child (void)
1268	{
1269	aio_req prv;
1270
1271	while (prv = reqq_shift (&req_queue))
1272	req_free (prv);
1273
1274	while (prv = reqq_shift (&res_queue))
1275	req_free (prv);
1276
1277	while (wrk_first.next != &wrk_first)
1278	{
1279	worker *wrk = wrk_first.next;
1280
1281	if (wrk->req)
1282	req_free (wrk->req);
1283
1284	worker_clear (wrk);
1285	worker_free (wrk);
1286	}
1287
1288	started = 0;
1289	idle = 0;
1290	nreqs = 0;
1291	nready = 0;
1292	npending = 0;
1293
1294	close (respipe [0]);
1295	close (respipe [1]);
1296	create_pipe ();
1297
1298	atfork_parent ();
1299	}	789	}
1300		790
1301	#define dREQ \	791	#define dREQ \
		792	SV *cb_cv; \
1302	aio_req req; \	793	aio_req req; \
1303	int req_pri = next_pri; \	794	int req_pri = next_pri; \
1304	next_pri = DEFAULT_PRI + PRI_BIAS; \	795	next_pri = EIO_PRI_DEFAULT; \
1305	\	796	\
1306	if (SvOK (callback) && !SvROK (callback)) \	797	cb_cv = get_cb (callback); \
1307	croak ("callback must be undef or of reference type"); \
1308	\	798	\
1309	Newz (0, req, 1, aio_cb); \	799	Newz (0, req, 1, eio_req); \
1310	if (!req) \	800	if (!req) \
1311	croak ("out of memory during aio_req allocation"); \	801	croak ("out of memory during eio_req allocation"); \
1312	\	802	\
1313	req->callback = newSVsv (callback); \	803	req->callback = SvREFCNT_inc (cb_cv); \
1314	req->pri = req_pri	804	req->pri = req_pri
1315		805
1316	#define REQ_SEND \	806	#define REQ_SEND \
		807	PUTBACK; \
1317	req_send (req); \	808	req_submit (req); \
		809	SPAGAIN; \
1318	\	810	\
1319	if (GIMME_V != G_VOID) \	811	if (GIMME_V != G_VOID) \
1320	XPUSHs (req_sv (req, AIO_REQ_KLASS));	812	XPUSHs (req_sv (req, aio_req_stash));
1321		813
		814	static void
		815	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		816	{
		817	if (SvROK (path))
		818	{
		819	AV *av = (AV *)SvRV (path);
		820	SV *wdob;
		821
		822	if (SvTYPE (av) != SVt_PVAV || AvFILLp (av) != 1)
		823	croak ("IO::AIO: pathname arguments must be specified as strings or [wd, path] arrayrefs");
		824
		825	path = AvARRAY (av)[1];
		826	wdob = AvARRAY (av)[0];
		827
		828	*wd = SvAIO_WD (wdob);
		829	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		830	}
		831
		832	*pathsv = newSVsv (path);
		833	*ptr = SvPVbyte_nolen (*pathsv);
		834	}
		835
		836	static void
		837	req_set_path1 (aio_req req, SV *path)
		838	{
		839	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		840	}
		841
		842	static void
		843	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		844	{
		845	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		846
		847	switch (SvTYPE (rv))
		848	{
		849	case SVt_PVIO:
		850	case SVt_PVLV:
		851	case SVt_PVGV:
		852	req->type = type_fh;
		853	req->sv1 = newSVsv (fh_or_path);
		854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		855	break;
		856
		857	default:
		858	req->type = type_path;
		859	req_set_path1 (req, fh_or_path);
		860	break;
		861	}
		862
		863	}
		864
1322	MODULE = IO::AIO PACKAGE = IO::AIO	865	MODULE = IO::AIO PACKAGE = IO::AIO
1323		866
1324	PROTOTYPES: ENABLE	867	PROTOTYPES: ENABLE
1325		868
1326	BOOT:	869	BOOT:
1327	{	870	{
		871	static const struct {
		872	const char *name;
		873	IV iv;
		874	} *civ, const_iv[] = {
		875	# define const_niv(name, value) { # name, (IV) value },
		876	# define const_iv(name) { # name, (IV) name },
		877	# define const_eio(name) { # name, (IV) EIO_ ## name },
		878	const_iv (EXDEV)
		879	const_iv (ENOSYS)
		880	const_iv (O_RDONLY)
		881	const_iv (O_WRONLY)
		882	const_iv (O_RDWR)
		883	const_iv (O_CREAT)
		884	const_iv (O_TRUNC)
		885	const_iv (O_EXCL)
		886	const_iv (O_APPEND)
		887
		888	const_iv (O_ASYNC)
		889	const_iv (O_DIRECT)
		890	const_iv (O_NOATIME)
		891
		892	const_iv (O_CLOEXEC)
		893	const_iv (O_NOCTTY)
		894	const_iv (O_NOFOLLOW)
		895	const_iv (O_NONBLOCK)
		896	const_iv (O_EXEC)
		897	const_iv (O_SEARCH)
		898	const_iv (O_DIRECTORY)
		899	const_iv (O_DSYNC)
		900	const_iv (O_RSYNC)
		901	const_iv (O_SYNC)
		902	const_iv (O_TTY_INIT)
		903
		904	const_iv (S_IFIFO)
		905	const_iv (S_IFCHR)
		906	const_iv (S_IFBLK)
		907	const_iv (S_IFLNK)
		908	const_iv (S_IFREG)
		909	const_iv (S_IFDIR)
		910	const_iv (S_IFWHT)
		911	const_iv (S_IFSOCK)
		912	const_iv (S_IFMT)
		913
		914	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		915	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		916	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		917	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		918	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		919	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		920
		921	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		922	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		923	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		924	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		925	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		926
		927	const_iv (ST_RDONLY)
		928	const_iv (ST_NOSUID)
		929	const_iv (ST_NODEV)
		930	const_iv (ST_NOEXEC)
		931	const_iv (ST_SYNCHRONOUS)
		932	const_iv (ST_MANDLOCK)
		933	const_iv (ST_WRITE)
		934	const_iv (ST_APPEND)
		935	const_iv (ST_IMMUTABLE)
		936	const_iv (ST_NOATIME)
		937	const_iv (ST_NODIRATIME)
		938	const_iv (ST_RELATIME)
		939
		940	const_iv (PROT_NONE)
		941	const_iv (PROT_EXEC)
		942	const_iv (PROT_READ)
		943	const_iv (PROT_WRITE)
		944
		945	/*const_iv (MAP_FIXED)*/
		946	const_iv (MAP_PRIVATE)
		947	const_iv (MAP_SHARED)
		948	const_iv (MAP_ANONYMOUS)
		949
		950	/* linuxish */
		951	const_iv (MAP_HUGETLB)
		952	const_iv (MAP_LOCKED)
		953	const_iv (MAP_NORESERVE)
		954	const_iv (MAP_POPULATE)
		955	const_iv (MAP_NONBLOCK)
		956
		957	const_eio (MCL_FUTURE)
		958	const_eio (MCL_CURRENT)
		959
		960	const_eio (MS_ASYNC)
		961	const_eio (MS_INVALIDATE)
		962	const_eio (MS_SYNC)
		963
		964	const_eio (MT_MODIFY)
		965
		966	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		967	const_eio (SYNC_FILE_RANGE_WRITE)
		968	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		969
		970	const_eio (FALLOC_FL_KEEP_SIZE)
		971
		972	const_eio (READDIR_DENTS)
		973	const_eio (READDIR_DIRS_FIRST)
		974	const_eio (READDIR_STAT_ORDER)
		975	const_eio (READDIR_FOUND_UNKNOWN)
		976
		977	const_eio (DT_UNKNOWN)
		978	const_eio (DT_FIFO)
		979	const_eio (DT_CHR)
		980	const_eio (DT_DIR)
		981	const_eio (DT_BLK)
		982	const_eio (DT_REG)
		983	const_eio (DT_LNK)
		984	const_eio (DT_SOCK)
		985	const_eio (DT_WHT)
		986	};
		987
1328	HV *stash = gv_stashpv ("IO::AIO", 1);	988	aio_stash = gv_stashpv ("IO::AIO" , 1);
		989	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		990	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		991	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1329		992
1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	993	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	994	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1332	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1333	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1334	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1335	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1336	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1337		995
1338	create_pipe ();	996	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1340	}
1341		997
		998	reinit ();
		999	}
		1000
1342	void	1001	void
		1002	reinit ()
		1003	PROTOTYPE:
		1004
		1005	void
1343	max_poll_reqs (int nreqs)	1006	max_poll_reqs (unsigned int nreqs)
1344	PROTOTYPE: $	1007	PROTOTYPE: $
1345	CODE:	1008	CODE:
1346	max_poll_reqs = nreqs;	1009	eio_set_max_poll_reqs (nreqs);
1347		1010
1348	void	1011	void
1349	max_poll_time (double nseconds)	1012	max_poll_time (double nseconds)
1350	PROTOTYPE: $	1013	PROTOTYPE: $
1351	CODE:	1014	CODE:
1352	max_poll_time = nseconds * AIO_TICKS;	1015	eio_set_max_poll_time (nseconds);
1353		1016
1354	void	1017	void
1355	min_parallel (int nthreads)	1018	min_parallel (unsigned int nthreads)
1356	PROTOTYPE: $
1357
1358	void
1359	max_parallel (int nthreads)
1360	PROTOTYPE: $
1361
1362	void
1363	max_idle (int nthreads)
1364	PROTOTYPE: $	1019	PROTOTYPE: $
1365	CODE:	1020	CODE:
1366	set_max_idle (nthreads);	1021	eio_set_min_parallel (nthreads);
1367		1022
1368	int	1023	void
1369	max_outstanding (int maxreqs)	1024	max_parallel (unsigned int nthreads)
1370	PROTOTYPE: $	1025	PROTOTYPE: $
1371	CODE:	1026	CODE:
1372	RETVAL = max_outstanding;	1027	eio_set_max_parallel (nthreads);
		1028
		1029	void
		1030	max_idle (unsigned int nthreads)
		1031	PROTOTYPE: $
		1032	CODE:
		1033	eio_set_max_idle (nthreads);
		1034
		1035	void
		1036	idle_timeout (unsigned int seconds)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_idle_timeout (seconds);
		1040
		1041	void
		1042	max_outstanding (unsigned int maxreqs)
		1043	PROTOTYPE: $
		1044	CODE:
1373	max_outstanding = maxreqs;	1045	max_outstanding = maxreqs;
1374	OUTPUT:
1375	RETVAL
1376		1046
1377	void	1047	void
1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1048	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1379	SV8 * pathname
1380	int flags
1381	int mode
1382	SV * callback
1383	PROTOTYPE: $$$;$
1384	PPCODE:	1049	PPCODE:
1385	{	1050	{
1386	dREQ;	1051	dREQ;
1387		1052
		1053	req->type = EIO_WD_OPEN;
		1054	req_set_path1 (req, pathname);
		1055
		1056	REQ_SEND;
		1057	}
		1058
		1059	void
		1060	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1061	PPCODE:
		1062	{
		1063	dREQ;
		1064
1388	req->type = REQ_OPEN;	1065	req->type = EIO_OPEN;
1389	req->sv1 = newSVsv (pathname);	1066	req_set_path1 (req, pathname);
1390	req->ptr1 = SvPVbyte_nolen (req->sv1);
1391	req->int1 = flags;	1067	req->int1 = flags;
1392	req->mode = mode;	1068	req->int2 = mode;
1393		1069
1394	REQ_SEND;	1070	REQ_SEND;
1395	}	1071	}
1396		1072
1397	void	1073	void
1398	aio_close (fh,callback=&PL_sv_undef)	1074	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1399	SV * fh
1400	SV * callback
1401	PROTOTYPE: $;$
1402	ALIAS:	1075	ALIAS:
1403	aio_close = REQ_CLOSE
1404	aio_fsync = REQ_FSYNC	1076	aio_fsync = EIO_FSYNC
1405	aio_fdatasync = REQ_FDATASYNC	1077	aio_fdatasync = EIO_FDATASYNC
		1078	aio_syncfs = EIO_SYNCFS
1406	PPCODE:	1079	PPCODE:
1407	{	1080	{
		1081	int fd = s_fileno_croak (fh, 0);
1408	dREQ;	1082	dREQ;
1409		1083
1410	req->type = ix;	1084	req->type = ix;
1411	req->fh = newSVsv (fh);	1085	req->sv1 = newSVsv (fh);
1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1086	req->int1 = fd;
1413		1087
1414	REQ_SEND (req);	1088	REQ_SEND (req);
1415	}	1089	}
1416		1090
1417	void	1091	void
		1092	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1093	PPCODE:
		1094	{
		1095	int fd = s_fileno_croak (fh, 0);
		1096	dREQ;
		1097
		1098	req->type = EIO_SYNC_FILE_RANGE;
		1099	req->sv1 = newSVsv (fh);
		1100	req->int1 = fd;
		1101	req->offs = offset;
		1102	req->size = nbytes;
		1103	req->int2 = flags;
		1104
		1105	REQ_SEND (req);
		1106	}
		1107
		1108	void
		1109	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1110	PPCODE:
		1111	{
		1112	int fd = s_fileno_croak (fh, 0);
		1113	dREQ;
		1114
		1115	req->type = EIO_FALLOCATE;
		1116	req->sv1 = newSVsv (fh);
		1117	req->int1 = fd;
		1118	req->int2 = mode;
		1119	req->offs = offset;
		1120	req->size = len;
		1121
		1122	REQ_SEND (req);
		1123	}
		1124
		1125	void
		1126	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1130	int fd = s_fileno_croak (fh, 0);
		1131	dREQ;
		1132
		1133	if (expect_false (close_fd < 0))
		1134	{
		1135	int pipefd [2];
		1136
		1137	if (
		1138	#ifdef _WIN32
		1139	_pipe (pipefd, 1, _O_BINARY) < 0
		1140	#else
		1141	pipe (pipefd) < 0
		1142	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1143	#endif
		1144	|| close (pipefd [1]) < 0
		1145	)
		1146	abort (); /*D*/
		1147
		1148	close_fd = pipefd [0];
		1149	}
		1150
		1151	req->type = EIO_DUP2;
		1152	req->int1 = close_fd;
		1153	req->sv2 = newSVsv (fh);
		1154	req->int2 = fd;
		1155
		1156	REQ_SEND (req);
		1157	}
		1158
		1159	void
1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1160	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1419	SV * fh
1420	UV offset
1421	UV length
1422	SV8 * data
1423	UV dataoffset
1424	SV * callback
1425	ALIAS:	1161	ALIAS:
1426	aio_read = REQ_READ	1162	aio_read = EIO_READ
1427	aio_write = REQ_WRITE	1163	aio_write = EIO_WRITE
1428	PROTOTYPE: $$$$$;$
1429	PPCODE:	1164	PPCODE:
1430	{	1165	{
1431	STRLEN svlen;	1166	STRLEN svlen;
		1167	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1432	char *svptr = SvPVbyte (data, svlen);	1168	char *svptr = SvPVbyte (data, svlen);
1433		1169	UV len = SvUV (length);
1434	SvUPGRADE (data, SVt_PV);
1435	SvPOK_on (data);
1436		1170
1437	if (dataoffset < 0)	1171	if (dataoffset < 0)
1438	dataoffset += svlen;	1172	dataoffset += svlen;
1439		1173
1440	if (dataoffset < 0 || dataoffset > svlen)	1174	if (dataoffset < 0 || dataoffset > svlen)
1441	croak ("data offset outside of string");	1175	croak ("dataoffset outside of data scalar");
1442		1176
1443	if (ix == REQ_WRITE)	1177	if (ix == EIO_WRITE)
1444	{	1178	{
1445	/* write: check length and adjust. */	1179	/* write: check length and adjust. */
1446	if (length < 0 || length + dataoffset > svlen)	1180	if (!SvOK (length) || len + dataoffset > svlen)
1447	length = svlen - dataoffset;	1181	len = svlen - dataoffset;
1448	}	1182	}
1449	else	1183	else
1450	{	1184	{
1451	/* read: grow scalar as necessary */	1185	/* read: check type and grow scalar as necessary */
		1186	SvUPGRADE (data, SVt_PV);
1452	svptr = SvGROW (data, length + dataoffset + 1);	1187	svptr = SvGROW (data, len + dataoffset + 1);
1453	}	1188	}
1454
1455	if (length < 0)
1456	croak ("length must not be negative");
1457		1189
1458	{	1190	{
1459	dREQ;	1191	dREQ;
1460		1192
1461	req->type = ix;	1193	req->type = ix;
1462	req->fh = newSVsv (fh);	1194	req->sv1 = newSVsv (fh);
1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1195	req->int1 = fd;
1464	: IoOFP (sv_2io (fh)));	1196	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1465	req->offs = offset;
1466	req->size = length;	1197	req->size = len;
1467	req->sv1 = SvREFCNT_inc (data);	1198	req->sv2 = SvREFCNT_inc (data);
1468	req->ptr1 = (char *)svptr + dataoffset;	1199	req->ptr2 = (char *)svptr + dataoffset;
1469	req->stroffset = dataoffset;	1200	req->stroffset = dataoffset;
1470		1201
1471	if (!SvREADONLY (data))	1202	if (!SvREADONLY (data))
1472	{	1203	{
1473	SvREADONLY_on (data);	1204	SvREADONLY_on (data);
1474	req->flags |= FLAG_SV1_RO_OFF;	1205	req->flags |= FLAG_SV2_RO_OFF;
1475	}	1206	}
1476		1207
1477	REQ_SEND;	1208	REQ_SEND;
1478	}	1209	}
1479	}	1210	}
1480		1211
1481	void	1212	void
1482	aio_readlink (path,callback=&PL_sv_undef)	1213	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1483	SV8 * path	1214	ALIAS:
1484	SV * callback	1215	aio_readlink = EIO_READLINK
1485	PROTOTYPE: $$;$	1216	aio_realpath = EIO_REALPATH
1486	PPCODE:	1217	PPCODE:
1487	{	1218	{
1488	SV *data;
1489	dREQ;	1219	dREQ;
1490		1220
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	1221	req->type = ix;
1495	req->fh = newSVsv (path);	1222	req_set_path1 (req, pathname);
1496	req->ptr2 = SvPVbyte_nolen (req->fh);
1497	req->sv1 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		1223
1500	REQ_SEND;	1224	REQ_SEND;
1501	}	1225	}
1502		1226
1503	void	1227	void
1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1228	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1505	SV * out_fh
1506	SV * in_fh
1507	UV in_offset
1508	UV length
1509	SV * callback
1510	PROTOTYPE: $$$$;$
1511	PPCODE:	1229	PPCODE:
1512	{	1230	{
		1231	int ifd = s_fileno_croak (in_fh , 0);
		1232	int ofd = s_fileno_croak (out_fh, 1);
1513	dREQ;	1233	dREQ;
1514		1234
1515	req->type = REQ_SENDFILE;	1235	req->type = EIO_SENDFILE;
1516	req->fh = newSVsv (out_fh);	1236	req->sv1 = newSVsv (out_fh);
1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1237	req->int1 = ofd;
1518	req->sv2 = newSVsv (in_fh);	1238	req->sv2 = newSVsv (in_fh);
1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1239	req->int2 = ifd;
1520	req->offs = in_offset;	1240	req->offs = in_offset;
1521	req->size = length;	1241	req->size = length;
1522		1242
1523	REQ_SEND;	1243	REQ_SEND;
1524	}	1244	}
1525		1245
1526	void	1246	void
1527	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1247	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1528	SV * fh
1529	UV offset
1530	IV length
1531	SV * callback
1532	PROTOTYPE: $$$;$
1533	PPCODE:	1248	PPCODE:
1534	{	1249	{
		1250	int fd = s_fileno_croak (fh, 0);
1535	dREQ;	1251	dREQ;
1536		1252
1537	req->type = REQ_READAHEAD;	1253	req->type = EIO_READAHEAD;
1538	req->fh = newSVsv (fh);	1254	req->sv1 = newSVsv (fh);
1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1255	req->int1 = fd;
1540	req->offs = offset;	1256	req->offs = offset;
1541	req->size = length;	1257	req->size = length;
1542		1258
1543	REQ_SEND;	1259	REQ_SEND;
1544	}	1260	}
1545		1261
1546	void	1262	void
1547	aio_stat (fh_or_path,callback=&PL_sv_undef)	1263	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1548	SV8 * fh_or_path
1549	SV * callback
1550	ALIAS:	1264	ALIAS:
1551	aio_stat = REQ_STAT	1265	aio_stat = EIO_STAT
1552	aio_lstat = REQ_LSTAT	1266	aio_lstat = EIO_LSTAT
		1267	aio_statvfs = EIO_STATVFS
1553	PPCODE:	1268	PPCODE:
1554	{	1269	{
1555	dREQ;	1270	dREQ;
1556		1271
1557	req->ptr2 = malloc (sizeof (Stat_t));
1558	if (!req->ptr2)
1559	{
1560	req_free (req);
1561	croak ("out of memory during aio_stat statdata allocation");
1562	}
1563
1564	req->flags |= FLAG_PTR2_FREE;
1565
1566	if (SvPOK (fh_or_path))
1567	{
1568	req->type = ix;
1569	req->sv1 = newSVsv (fh_or_path);	1272	req->sv1 = newSVsv (fh_or_path);
1570	req->ptr1 = SvPVbyte_nolen (req->sv1);	1273	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1571	}
1572	else
1573	{
1574	req->type = REQ_FSTAT;
1575	req->fh = newSVsv (fh_or_path);
1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1577	}
1578
1579	REQ_SEND;	1274	REQ_SEND;
1580	}	1275	}
1581		1276
		1277	UV
		1278	major (UV dev)
		1279	ALIAS:
		1280	minor = 1
		1281	CODE:
		1282	RETVAL = ix ? major (dev) : minor (dev);
		1283	OUTPUT:
		1284	RETVAL
		1285
		1286	UV
		1287	makedev (UV maj, UV min)
		1288	CODE:
		1289	RETVAL = makedev (maj, min);
		1290	OUTPUT:
		1291	RETVAL
		1292
1582	void	1293	void
		1294	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1295	PPCODE:
		1296	{
		1297	dREQ;
		1298
		1299	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1300	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1301	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1302
		1303	REQ_SEND;
		1304	}
		1305
		1306	void
		1307	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1308	PPCODE:
		1309	{
		1310	dREQ;
		1311
		1312	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1313	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
		1319	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1320	ALIAS:
		1321	aio_chmod = EIO_CHMOD
		1322	aio_mkdir = EIO_MKDIR
		1323	PPCODE:
		1324	{
		1325	dREQ;
		1326
		1327	req->int2 = mode;
		1328	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1329
		1330	REQ_SEND;
		1331	}
		1332
		1333	void
		1334	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1335	PPCODE:
		1336	{
		1337	dREQ;
		1338
		1339	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1340	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1341	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1342
		1343	REQ_SEND;
		1344	}
		1345
		1346	void
		1347	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1348	PPCODE:
		1349	{
		1350	dREQ;
		1351
		1352	req->type = EIO_READDIR;
		1353	req->sv1 = newSVsv (pathname);
		1354	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1355	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1356
		1357	if (flags & EIO_READDIR_DENTS)
		1358	req->int1 |= EIO_READDIR_CUSTOM2;
		1359
		1360	REQ_SEND;
		1361	}
		1362
		1363	void
1583	aio_unlink (pathname,callback=&PL_sv_undef)	1364	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	SV * callback
1586	ALIAS:	1365	ALIAS:
1587	aio_unlink = REQ_UNLINK	1366	aio_unlink = EIO_UNLINK
1588	aio_rmdir = REQ_RMDIR	1367	aio_rmdir = EIO_RMDIR
1589	aio_readdir = REQ_READDIR	1368	aio_readdir = EIO_READDIR
1590	PPCODE:	1369	PPCODE:
1591	{	1370	{
1592	dREQ;	1371	dREQ;
1593		1372
1594	req->type = ix;	1373	req->type = ix;
1595	req->sv1 = newSVsv (pathname);	1374	req_set_path1 (req, pathname);
1596	req->ptr1 = SvPVbyte_nolen (req->sv1);
1597		1375
1598	REQ_SEND;	1376	REQ_SEND;
1599	}	1377	}
1600		1378
1601	void	1379	void
		1380	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		1381	ALIAS:
		1382	aio_link = EIO_LINK
		1383	aio_symlink = EIO_SYMLINK
		1384	aio_rename = EIO_RENAME
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388	eio_wd wd2;
		1389
		1390	req->type = ix;
		1391	req_set_path1 (req, oldpath);
		1392	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1393	req->int3 = (long)wd2;
		1394
		1395	REQ_SEND;
		1396	}
		1397
		1398	void
1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)	1399	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1603	SV8 * pathname
1604	UV mode
1605	SV * callback
1606	PPCODE:	1400	PPCODE:
1607	{	1401	{
1608	dREQ;	1402	dREQ;
1609		1403
1610	req->type = REQ_MKDIR;	1404	req->type = EIO_MKNOD;
1611	req->sv1 = newSVsv (pathname);
1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
1613	req->mode = mode;	1405	req->int2 = (mode_t)mode;
1614		1406	req->offs = dev;
1615	REQ_SEND;	1407	req_set_path1 (req, pathname);
1616	}
1617
1618	void
1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1620	SV8 * oldpath
1621	SV8 * newpath
1622	SV * callback
1623	ALIAS:
1624	aio_link = REQ_LINK
1625	aio_symlink = REQ_SYMLINK
1626	aio_rename = REQ_RENAME
1627	PPCODE:
1628	{
1629	dREQ;
1630
1631	req->type = ix;
1632	req->fh = newSVsv (oldpath);
1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1634	req->sv1 = newSVsv (newpath);
1635	req->ptr1 = SvPVbyte_nolen (req->sv1);
1636		1408
1637	REQ_SEND;	1409	REQ_SEND;
1638	}	1410	}
1639		1411
1640	void	1412	void
1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1413	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1642	SV8 * pathname	1414	ALIAS:
1643	UV mode	1415	aio_mtouch = EIO_MTOUCH
1644	UV dev	1416	aio_msync = EIO_MSYNC
1645	SV * callback	1417	PPCODE:
		1418	{
		1419	STRLEN svlen;
		1420	char *svptr = SvPVbyte (data, svlen);
		1421	UV len = SvUV (length);
		1422
		1423	if (offset < 0)
		1424	offset += svlen;
		1425
		1426	if (offset < 0 || offset > svlen)
		1427	croak ("offset outside of scalar");
		1428
		1429	if (!SvOK (length) || len + offset > svlen)
		1430	len = svlen - offset;
		1431
		1432	{
		1433	dREQ;
		1434
		1435	req->type = ix;
		1436	req->sv2 = SvREFCNT_inc (data);
		1437	req->ptr2 = (char *)svptr + offset;
		1438	req->size = len;
		1439	req->int1 = flags;
		1440
		1441	REQ_SEND;
		1442	}
		1443	}
		1444
		1445	void
		1446	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1447	PPCODE:
		1448	{
		1449	STRLEN svlen;
		1450	char *svptr = SvPVbyte (data, svlen);
		1451	UV len = SvUV (length);
		1452
		1453	if (offset < 0)
		1454	offset += svlen;
		1455
		1456	if (offset < 0 || offset > svlen)
		1457	croak ("offset outside of scalar");
		1458
		1459	if (!SvOK (length) || len + offset > svlen)
		1460	len = svlen - offset;
		1461
		1462	{
		1463	dREQ;
		1464
		1465	req->type = EIO_MLOCK;
		1466	req->sv2 = SvREFCNT_inc (data);
		1467	req->ptr2 = (char *)svptr + offset;
		1468	req->size = len;
		1469
		1470	REQ_SEND;
		1471	}
		1472	}
		1473
		1474	void
		1475	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1476	PPCODE:
		1477	{
		1478	dREQ;
		1479
		1480	req->type = EIO_MLOCKALL;
		1481	req->int1 = flags;
		1482
		1483	REQ_SEND;
		1484	}
		1485
		1486	void
		1487	aio_busy (double delay, SV *callback=&PL_sv_undef)
1646	PPCODE:	1488	PPCODE:
1647	{	1489	{
1648	dREQ;	1490	dREQ;
1649		1491
1650	req->type = REQ_MKNOD;	1492	req->type = EIO_BUSY;
1651	req->sv1 = newSVsv (pathname);	1493	req->nv1 = delay < 0. ? 0. : delay;
1652	req->ptr1 = SvPVbyte_nolen (req->sv1);	1494
1653	req->mode = (mode_t)mode;
1654	req->offs = dev;
1655
1656	REQ_SEND;	1495	REQ_SEND;
1657	}	1496	}
1658		1497
1659	void	1498	void
1660	aio_busy (delay,callback=&PL_sv_undef)	1499	aio_group (SV *callback=&PL_sv_undef)
1661	double delay	1500	PPCODE:
1662	SV * callback	1501	{
		1502	dREQ;
		1503
		1504	req->type = EIO_GROUP;
		1505
		1506	req_submit (req);
		1507	XPUSHs (req_sv (req, aio_grp_stash));
		1508	}
		1509
		1510	void
		1511	aio_nop (SV *callback=&PL_sv_undef)
		1512	ALIAS:
		1513	aio_nop = EIO_NOP
		1514	aio_sync = EIO_SYNC
1663	PPCODE:	1515	PPCODE:
1664	{	1516	{
1665	dREQ;	1517	dREQ;
1666		1518
1667	req->type = REQ_BUSY;
1668	req->int1 = delay < 0. ? 0 : delay;
1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1670
1671	REQ_SEND;
1672	}
1673
1674	void
1675	aio_group (callback=&PL_sv_undef)
1676	SV * callback
1677	PROTOTYPE: ;$
1678	PPCODE:
1679	{
1680	dREQ;
1681
1682	req->type = REQ_GROUP;
1683
1684	req_send (req);
1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1686	}
1687
1688	void
1689	aio_nop (callback=&PL_sv_undef)
1690	SV * callback
1691	PPCODE:
1692	{
1693	dREQ;
1694
1695	req->type = REQ_NOP;	1519	req->type = ix;
1696		1520
1697	REQ_SEND;	1521	REQ_SEND;
1698	}	1522	}
1699		1523
1700	int	1524	int
1701	aioreq_pri (int pri = 0)	1525	aioreq_pri (int pri = 0)
1702	PROTOTYPE: ;$
1703	CODE:	1526	CODE:
1704	RETVAL = next_pri - PRI_BIAS;	1527	RETVAL = next_pri;
1705	if (items > 0)	1528	if (items > 0)
1706	{	1529	{
1707	if (pri < PRI_MIN) pri = PRI_MIN;	1530	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1708	if (pri > PRI_MAX) pri = PRI_MAX;	1531	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1709	next_pri = pri + PRI_BIAS;	1532	next_pri = pri;
1710	}	1533	}
1711	OUTPUT:	1534	OUTPUT:
1712	RETVAL	1535	RETVAL
1713		1536
1714	void	1537	void
1715	aioreq_nice (int nice = 0)	1538	aioreq_nice (int nice = 0)
1716	CODE:	1539	CODE:
1717	nice = next_pri - nice;	1540	nice = next_pri - nice;
1718	if (nice < PRI_MIN) nice = PRI_MIN;	1541	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1719	if (nice > PRI_MAX) nice = PRI_MAX;	1542	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1720	next_pri = nice + PRI_BIAS;	1543	next_pri = nice;
1721		1544
1722	void	1545	void
1723	flush ()	1546	flush ()
1724	PROTOTYPE:
1725	CODE:	1547	CODE:
1726	while (nreqs)	1548	while (eio_nreqs ())
1727	{	1549	{
1728	poll_wait ();	1550	poll_wait ();
1729	poll_cb ();	1551	poll_cb ();
1730	}	1552	}
1731		1553
1732	int	1554	int
1733	poll()	1555	poll ()
1734	PROTOTYPE:
1735	CODE:	1556	CODE:
1736	poll_wait ();	1557	poll_wait ();
1737	RETVAL = poll_cb ();	1558	RETVAL = poll_cb ();
1738	OUTPUT:	1559	OUTPUT:
1739	RETVAL	1560	RETVAL
1740		1561
1741	int	1562	int
1742	poll_fileno()	1563	poll_fileno ()
1743	PROTOTYPE:
1744	CODE:	1564	CODE:
1745	RETVAL = respipe [0];	1565	RETVAL = s_epipe_fd (&respipe);
1746	OUTPUT:	1566	OUTPUT:
1747	RETVAL	1567	RETVAL
1748		1568
1749	int	1569	int
1750	poll_cb(...)	1570	poll_cb (...)
1751	PROTOTYPE:	1571	PROTOTYPE:
1752	CODE:	1572	CODE:
1753	RETVAL = poll_cb ();	1573	RETVAL = poll_cb ();
1754	OUTPUT:	1574	OUTPUT:
1755	RETVAL	1575	RETVAL
1756		1576
1757	void	1577	void
1758	poll_wait()	1578	poll_wait ()
1759	PROTOTYPE:
1760	CODE:	1579	CODE:
1761	poll_wait ();	1580	poll_wait ();
1762		1581
1763	void
1764	setsig (int signum = SIGIO)
1765	PROTOTYPE: ;$
1766	CODE:
1767	{
1768	if (block_sig_level)
1769	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1770
1771	LOCK (reslock);
1772	main_tid = pthread_self ();
1773	main_sig = signum;
1774	UNLOCK (reslock);
1775
1776	if (main_sig && npending)
1777	pthread_kill (main_tid, main_sig);
1778	}
1779
1780	void
1781	aio_block (SV *cb)
1782	PROTOTYPE: &
1783	PPCODE:
1784	{
1785	int count;
1786
1787	block_sig ();
1788	PUSHMARK (SP);
1789	PUTBACK;
1790	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1791	SPAGAIN;
1792	unblock_sig ();
1793
1794	if (SvTRUE (ERRSV))
1795	croak (0);
1796
1797	XSRETURN (count);
1798	}
1799
1800	int	1582	int
1801	nreqs()	1583	nreqs ()
1802	PROTOTYPE:
1803	CODE:	1584	CODE:
1804	RETVAL = nreqs;	1585	RETVAL = eio_nreqs ();
1805	OUTPUT:	1586	OUTPUT:
1806	RETVAL	1587	RETVAL
1807		1588
1808	int	1589	int
1809	nready()	1590	nready ()
1810	PROTOTYPE:
1811	CODE:	1591	CODE:
1812	RETVAL = get_nready ();	1592	RETVAL = eio_nready ();
1813	OUTPUT:	1593	OUTPUT:
1814	RETVAL	1594	RETVAL
1815		1595
1816	int	1596	int
1817	npending()	1597	npending ()
1818	PROTOTYPE:
1819	CODE:	1598	CODE:
1820	RETVAL = get_npending ();	1599	RETVAL = eio_npending ();
1821	OUTPUT:	1600	OUTPUT:
1822	RETVAL	1601	RETVAL
1823		1602
1824	int	1603	int
1825	nthreads()	1604	nthreads ()
1826	PROTOTYPE:
1827	CODE:	1605	CODE:
1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1606	RETVAL = eio_nthreads ();
1829	RETVAL = started;
1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1831	OUTPUT:	1607	OUTPUT:
1832	RETVAL	1608	RETVAL
1833		1609
		1610	int
		1611	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1612	CODE:
		1613	RETVAL = posix_fadvise (fh, offset, length, advice);
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617	IV
		1618	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1619	CODE:
		1620	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1621	OUTPUT:
		1622	RETVAL
		1623
		1624	void
		1625	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1626	PPCODE:
		1627	sv_unmagic (scalar, MMAP_MAGIC);
		1628	{
		1629	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1630	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1631	if (addr == (void *)-1)
		1632	XSRETURN_NO;
		1633
		1634	sv_force_normal (scalar);
		1635
		1636	/* we store the length in mg_obj, as namlen is I32 :/ */
		1637	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1638	->mg_obj = (SV *)length;
		1639
		1640	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1641
		1642	if (!(prot & PROT_WRITE))
		1643	SvREADONLY_on (scalar);
		1644
		1645	if (SvLEN (scalar))
		1646	Safefree (SvPVX (scalar));
		1647
		1648	SvPVX (scalar) = (char *)addr;
		1649	SvCUR_set (scalar, length);
		1650	SvLEN_set (scalar, 0);
		1651	SvPOK_only (scalar);
		1652
		1653	XSRETURN_YES;
		1654	}
		1655
		1656	void
		1657	munmap (SV *scalar)
		1658	CODE:
		1659	sv_unmagic (scalar, MMAP_MAGIC);
		1660
		1661	int
		1662	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1663	ALIAS:
		1664	mprotect = 1
		1665	CODE:
		1666	{
		1667	STRLEN svlen;
		1668	void *addr = SvPVbyte (scalar, svlen);
		1669	size_t len = SvUV (length);
		1670
		1671	if (offset < 0)
		1672	offset += svlen;
		1673
		1674	if (offset < 0 || offset > svlen)
		1675	croak ("offset outside of scalar");
		1676
		1677	if (!SvOK (length) || len + offset > svlen)
		1678	len = svlen - offset;
		1679
		1680	addr = (void *)(((intptr_t)addr) + offset);
		1681	eio_page_align (&addr, &len);
		1682
		1683	switch (ix)
		1684	{
		1685	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1686	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1687	}
		1688	}
		1689	OUTPUT:
		1690	RETVAL
		1691
		1692	int
		1693	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1694	CODE:
		1695	{
		1696	STRLEN svlen;
		1697	void *addr = SvPVbyte (scalar, svlen);
		1698	size_t len = SvUV (length);
		1699
		1700	if (offset < 0)
		1701	offset += svlen;
		1702
		1703	if (offset < 0 || offset > svlen)
		1704	croak ("offset outside of scalar");
		1705
		1706	if (!SvOK (length) || len + offset > svlen)
		1707	len = svlen - offset;
		1708
		1709	addr = (void *)(((intptr_t)addr) + offset);
		1710	eio_page_align (&addr, &len);
		1711	#if _POSIX_MEMLOCK_RANGE
		1712	RETVAL = munlock (addr, len);
		1713	#else
		1714	RETVAL = ((errno = ENOSYS), -1);
		1715	#endif
		1716	}
		1717	OUTPUT:
		1718	RETVAL
		1719
		1720	int
		1721	munlockall ()
		1722	CODE:
		1723	#if _POSIX_MEMLOCK
		1724	munlockall ();
		1725	#else
		1726	RETVAL = -1;
		1727	errno = ENOSYS;
		1728	#endif
		1729	OUTPUT:
		1730	RETVAL
		1731
		1732	void _on_next_submit (SV *cb)
		1733	CODE:
		1734	SvREFCNT_dec (on_next_submit);
		1735	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1736
1834	PROTOTYPES: DISABLE	1737	PROTOTYPES: DISABLE
1835		1738
		1739	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1740
		1741	void
		1742	DESTROY (SV *self)
		1743	CODE:
		1744	{
		1745	aio_wd wd = SvAIO_WD (self);
		1746	#if HAVE_AT
		1747	SV *callback = &PL_sv_undef;
		1748	dREQ; /* clobbers next_pri :/ */
		1749	req->type = EIO_WD_CLOSE;
		1750	req->wd = wd;
		1751	REQ_SEND;
		1752	#else
		1753	eio_wd_close_sync (wd);
		1754	#endif
		1755	}
		1756
1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1757	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1837		1758
1838	void	1759	void
1839	cancel (aio_req_ornot req)	1760	cancel (aio_req_ornot req)
1840	CODE:	1761	CODE:
1841	req_cancel (req);	1762	eio_cancel (req);
1842		1763
1843	void	1764	void
1844	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1765	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1845	CODE:	1766	PPCODE:
		1767	{
		1768	if (GIMME_V != G_VOID)
		1769	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1770
		1771	if (items > 1)
		1772	{
		1773	SV *cb_cv =get_cb (callback);
		1774
1846	SvREFCNT_dec (req->callback);	1775	SvREFCNT_dec (req->callback);
1847	req->callback = newSVsv (callback);	1776	req->callback = SvREFCNT_inc (cb_cv);
		1777	}
		1778	}
1848		1779
1849	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1780	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1850		1781
1851	void	1782	void
1852	add (aio_req grp, ...)	1783	add (aio_req grp, ...)
1853	PPCODE:	1784	PPCODE:
1854	{	1785	{
1855	int i;	1786	int i;
1856	aio_req req;
1857
1858	if (main_sig && !block_sig_level)
1859	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1860		1787
1861	if (grp->int1 == 2)	1788	if (grp->int1 == 2)
1862	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1789	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1863		1790
1864	for (i = 1; i < items; ++i )	1791	for (i = 1; i < items; ++i )
1865	{	1792	{
		1793	aio_req req;
		1794
1866	if (GIMME_V != G_VOID)	1795	if (GIMME_V != G_VOID)
1867	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1796	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1868		1797
1869	req = SvAIO_REQ (ST (i));	1798	req = SvAIO_REQ (ST (i));
1870		1799
1871	if (req)	1800	if (req)
1872	{	1801	eio_grp_add (grp, req);
1873	++grp->size;
1874	req->grp = grp;
1875
1876	req->grp_prev = 0;
1877	req->grp_next = grp->grp_first;
1878
1879	if (grp->grp_first)
1880	grp->grp_first->grp_prev = req;
1881
1882	grp->grp_first = req;
1883	}
1884	}	1802	}
1885	}	1803	}
1886		1804
1887	void	1805	void
1888	cancel_subs (aio_req_ornot req)	1806	cancel_subs (aio_req_ornot req)
…		…
1897	AV *av;	1815	AV *av;
1898		1816
1899	grp->errorno = errno;	1817	grp->errorno = errno;
1900		1818
1901	av = newAV ();	1819	av = newAV ();
		1820	av_extend (av, items - 1);
1902		1821
1903	for (i = 1; i < items; ++i )	1822	for (i = 1; i < items; ++i )
1904	av_push (av, newSVsv (ST (i)));	1823	av_push (av, newSVsv (ST (i)));
1905		1824
1906	SvREFCNT_dec (grp->sv1);	1825	SvREFCNT_dec (grp->sv1);
…		…
1913	grp->errorno = errorno;	1832	grp->errorno = errorno;
1914		1833
1915	void	1834	void
1916	limit (aio_req grp, int limit)	1835	limit (aio_req grp, int limit)
1917	CODE:	1836	CODE:
1918	grp->int2 = limit;	1837	eio_grp_limit (grp, limit);
1919	aio_grp_feed (grp);
1920		1838
1921	void	1839	void
1922	feed (aio_req grp, SV *callback=&PL_sv_undef)	1840	feed (aio_req grp, SV *callback=&PL_sv_undef)
1923	CODE:	1841	CODE:
1924	{	1842	{
1925	SvREFCNT_dec (grp->sv2);	1843	SvREFCNT_dec (grp->sv2);
1926	grp->sv2 = newSVsv (callback);	1844	grp->sv2 = newSVsv (callback);
		1845	grp->feed = aio_grp_feed;
1927		1846
1928	if (grp->int2 <= 0)	1847	if (grp->int2 <= 0)
1929	grp->int2 = 2;	1848	grp->int2 = 2;
1930		1849
1931	aio_grp_feed (grp);	1850	eio_grp_limit (grp, grp->int2);
1932	}	1851	}
1933		1852

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