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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.96 by root, Sat Dec 23 04:49:37 2006 UTC vs.
Revision 1.193 by root, Mon Jul 25 16:51:07 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;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	STRLEN stroffset; \
		113	SV *self;
		114
		115	#define EIO_NO_WRAPPERS 1
		116
		117	#include "libeio/config.h"
		118	#include "libeio/eio.h"
		119
		120	static int req_invoke (eio_req *req);
		121	#define EIO_FINISH(req) req_invoke (req)
		122	static void req_destroy (eio_req *grp);
		123	#define EIO_DESTROY(req) req_destroy (req)
		124
		125	#include "libeio/eio.c"
		126
		127	/* Linux/others */
		128	#ifndef O_ASYNC
		129	# define O_ASYNC 0
		130	#endif
		131	#ifndef O_DIRECT
		132	# define O_DIRECT 0
		133	#endif
		134	#ifndef O_NOATIME
		135	# define O_NOATIME 0
		136	#endif
		137
		138	/* POSIX */
		139	#ifndef O_CLOEXEC
		140	# define O_CLOEXEC 0
		141	#endif
		142	#ifndef O_NOFOLLOW
		143	# define O_NOFOLLOW 0
		144	#endif
		145	#ifndef O_NOCTTY
		146	# define O_NOCTTY 0
		147	#endif
		148	#ifndef O_NONBLOCK
		149	# define O_NONBLOCK 0
		150	#endif
		151	#ifndef O_EXEC
		152	# define O_EXEC 0
		153	#endif
		154	#ifndef O_SEARCH
		155	# define O_SEARCH 0
		156	#endif
		157	#ifndef O_DIRECTORY
		158	# define O_DIRECTORY 0
		159	#endif
		160	#ifndef O_DSYNC
		161	# define O_DSYNC 0
		162	#endif
		163	#ifndef O_RSYNC
		164	# define O_RSYNC 0
		165	#endif
		166	#ifndef O_SYNC
		167	# define O_SYNC 0
		168	#endif
		169	#ifndef O_TTY_INIT
		170	# define O_TTY_INIT 0
		171	#endif
		172
		173	#ifndef POSIX_FADV_NORMAL
		174	# define POSIX_FADV_NORMAL 0
		175	#endif
		176	#ifndef POSIX_FADV_SEQUENTIAL
		177	# define POSIX_FADV_SEQUENTIAL 0
		178	#endif
		179	#ifndef POSIX_FADV_RANDOM
		180	# define POSIX_FADV_RANDOM 0
		181	#endif
		182	#ifndef POSIX_FADV_NOREUSE
		183	# define POSIX_FADV_NOREUSE 0
		184	#endif
		185	#ifndef POSIX_FADV_WILLNEED
		186	# define POSIX_FADV_WILLNEED 0
		187	#endif
		188	#ifndef POSIX_FADV_DONTNEED
		189	# define POSIX_FADV_DONTNEED 0
		190	#endif
		191
		192	#if !HAVE_POSIX_FADVISE
		193	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		194	#endif
		195
		196	#ifndef POSIX_MADV_NORMAL
		197	# define POSIX_MADV_NORMAL 0
		198	#endif
		199	#ifndef POSIX_MADV_SEQUENTIAL
		200	# define POSIX_MADV_SEQUENTIAL 0
		201	#endif
		202	#ifndef POSIX_MADV_RANDOM
		203	# define POSIX_MADV_RANDOM 0
		204	#endif
		205	#ifndef POSIX_MADV_WILLNEED
		206	# define POSIX_MADV_WILLNEED 0
		207	#endif
		208	#ifndef POSIX_MADV_DONTNEED
		209	# define POSIX_MADV_DONTNEED 0
		210	#endif
		211
		212	#if !HAVE_POSIX_MADVISE
		213	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		214	#endif
		215
		216	#ifndef PROT_NONE
		217	# define PROT_NONE 0
		218	#endif
		219	#ifndef PROT_READ
		220	# define PROT_READ 0
		221	#endif
		222	#ifndef PROT_WRITE
		223	# define PROT_READ 0
		224	#endif
		225	#ifndef PROT_EXEC
		226	# define PROT_EXEC 0
		227	#endif
		228
		229	#ifndef ST_RDONLY
		230	# define ST_RDONLY 0
		231	#endif
		232	#ifndef ST_NOSUID
		233	# define ST_NOSUID 0
		234	#endif
		235	#ifndef ST_NODEV
		236	# define ST_NODEV 0
		237	#endif
		238	#ifndef ST_NOEXEC
		239	# define ST_NOEXEC 0
		240	#endif
		241	#ifndef ST_SYNCHRONOUS
		242	# define ST_SYNCHRONOUS 0
		243	#endif
		244	#ifndef ST_MANDLOCK
		245	# define ST_MANDLOCK 0
		246	#endif
		247	#ifndef ST_WRITE
		248	# define ST_WRITE 0
		249	#endif
		250	#ifndef ST_APPEND
		251	# define ST_APPEND 0
		252	#endif
		253	#ifndef ST_IMMUTABLE
		254	# define ST_IMMUTABLE 0
		255	#endif
		256	#ifndef ST_NOATIME
		257	# define ST_NOATIME 0
		258	#endif
		259	#ifndef ST_NODIRATIME
		260	# define ST_NODIRATIME 0
		261	#endif
		262	#ifndef ST_RELATIME
		263	# define ST_RELATIME 0
		264	#endif
		265
		266	#ifndef S_IFIFO
		267	# define S_IFIFO 0
		268	#endif
		269	#ifndef S_IFCHR
		270	# define S_IFCHR 0
		271	#endif
		272	#ifndef S_IFBLK
		273	# define S_IFBLK 0
		274	#endif
		275	#ifndef S_IFLNK
		276	# define S_IFLNK 0
		277	#endif
		278	#ifndef S_IFREG
		279	# define S_IFREG 0
		280	#endif
		281	#ifndef S_IFDIR
		282	# define S_IFDIR 0
		283	#endif
		284	#ifndef S_IFWHT
		285	# define S_IFWHT 0
		286	#endif
		287	#ifndef S_IFSOCK
		288	# define S_IFSOCK 0
		289	#endif
		290
		291	#ifndef MAP_ANONYMOUS
		292	# ifdef MAP_ANON
		293	# define MAP_ANONYMOUS MAP_ANON
44	# else	294	# else
45	# error sendfile support requested but not available	295	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46	# endif	296	# endif
47	#endif	297	#endif
48		298	#ifndef MAP_HUGETLB
49	/* number of seconds after which idle threads exit */	299	# 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	300	#endif
		301	#ifndef MAP_LOCKED
		302	# define MAP_LOCKED 0
80	#endif	303	#endif
		304	#ifndef MAP_NORESERVE
		305	# define MAP_NORESERVE 0
		306	#endif
		307	#ifndef MAP_POPULATE
		308	# define MAP_POPULATE 0
		309	#endif
		310	#ifndef MAP_NONBLOCK
		311	# define MAP_NONBLOCK 0
		312	#endif
81		313
82	/* buffer size for various temporary buffers */	314	#ifndef makedev
83	#define AIO_BUFSIZE 65536	315	# define makedev(maj,min) (((maj) << 8) | (min))
		316	#endif
		317	#ifndef major
		318	# define major(dev) ((dev) >> 8)
		319	#endif
		320	#ifndef minor
		321	# define minor(dev) ((dev) & 0xff)
		322	#endif
84		323
85	#define dBUF \	324	#ifndef PAGESIZE
86	char *aio_buf; \	325	# define PAGESIZE sysconf (_SC_PAGESIZE)
87	LOCK (wrklock); \	326	#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		327
95	enum {	328	enum {
96	REQ_QUIT,	329	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
97	REQ_OPEN, REQ_CLOSE,
98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
99	REQ_SENDFILE,
100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101	REQ_FSYNC, REQ_FDATASYNC,
102	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
103	REQ_MKNOD, REQ_READDIR,
104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105	REQ_GROUP, REQ_NOP,
106	REQ_BUSY,
107	};	330	};
108		331
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;	332	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
144		334
145	enum {	335	static SV *on_next_submit;
146	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	337	static int max_outstanding;
148		338
149	DEFAULT_PRI = 0,	339	static s_epipe respipe;
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		340
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);	341	static void req_destroy (aio_req req);
362	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
363		343
		344	static void want_poll (void)
		345	{
		346	/* write a dummy byte to the pipe so fh becomes ready */
		347	s_epipe_signal (&respipe);
		348	}
		349
		350	static void done_poll (void)
		351	{
		352	/* read any signals sent by the worker threads */
		353	s_epipe_drain (&respipe);
		354	}
		355
364	/* must be called at most once */	356	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
366	{	358	{
367	if (!req->self)	359	if (!req->self)
368	{	360	{
369	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371	}	363	}
372		364
373	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374	}	366	}
375		367
376	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
377	{	369	{
378	MAGIC *mg;	370	MAGIC *mg;
379		371
380	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	372	if (!SvROK (sv)
		373	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		374	&& SvSTASH (SvRV (sv)) != aio_req_stash
		375	&& !sv_derived_from (sv, "IO::AIO::REQ")))
381	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
382		377
383	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384		379
385	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	381	}
387		382
388	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
389	{	384	{
390	block_sig ();	385	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	386	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	387	dSP;
399		388
400	ENTER;	389	ENTER;
401	SAVETMPS;	390	SAVETMPS;
402	PUSHMARK (SP);	391	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
404	PUTBACK;	393	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	395	SPAGAIN;
407	FREETMPS;	396	FREETMPS;
408	LEAVE;	397	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	}	398	}
419
420	unblock_sig ();
421	}	399	}
422		400
423	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
424	{	402	{
425	--grp->size;	403	eio_submit (req);
426		404
427	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	406	{
433	block_sig ();	407	dSP;
		408	SV *cb = sv_2mortal (on_next_submit);
434		409
435	if (!req_invoke (grp))	410	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		411
442	req_free (grp);	412	PUSHMARK (SP);
443	unblock_sig ();	413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
444	}	415	}
445	}	416	}
446		417
447	static int req_invoke (aio_req req)	418	static int req_invoke (eio_req *req)
448	{	419	{
449	dSP;
450
451	if (req->flags & FLAG_SV1_RO_OFF)	420	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	421	SvREADONLY_off (req->sv2);
453		422
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	423	if (!EIO_CANCELLED (req) && req->callback)
455	{	424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
456	ENTER;	429	ENTER;
457	SAVETMPS;	430	SAVETMPS;
458	PUSHMARK (SP);	431	PUSHMARK (SP);
459	EXTEND (SP, 1);	432	EXTEND (SP, 1);
460		433
		434	/* do not recreate the result IV from scratch each time */
		435	if (expect_true (sv_result_cache))
		436	{
		437	sv_result = sv_result_cache; sv_result_cache = 0;
		438	SvIV_set (sv_result, req->result);
		439	SvIOK_only (sv_result);
		440	}
		441	else
		442	{
		443	sv_result = newSViv (req->result);
		444	SvREADONLY_on (sv_result);
		445	}
		446
461	switch (req->type)	447	switch (req->type)
462	{	448	{
463	case REQ_READDIR:	449	case EIO_READDIR:
464	{	450	{
465	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
466		452
467	if (req->result >= 0)	453	if (req->result >= 0)
468	{	454	{
469	int i;	455	int i;
470	char *buf = req->ptr2;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471	AV *av = newAV ();	458	AV *av = newAV ();
472		459
473	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
474		461
475	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
476	{	463	{
477	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478		467
		468	if (req->int1 & EIO_READDIR_CUSTOM2)
		469	{
		470	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		471	AV *avent = newAV ();
		472
		473	av_extend (avent, 2);
		474
		475	if (!sv_type [ent->type])
		476	{
		477	sv_type [ent->type] = newSViv (ent->type);
		478	SvREADONLY_on (sv_type [ent->type]);
		479	}
		480
		481	av_store (avent, 0, namesv);
		482	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		483	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		484
		485	av_store (av, i, newRV_noinc ((SV *)avent));
		486	}
		487	else
479	av_store (av, i, sv);	488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
		494	SV *name = newSVpv (names, 0);
		495	av_store (av, i, name);
480	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
481	}	498	}
482		499
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	501	}
485		502
486	PUSHs (rv);	503	PUSHs (rv);
		504
		505	if (req->int1 & EIO_READDIR_CUSTOM1)
		506	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487	}	507	}
488	break;	508	break;
489		509
490	case REQ_OPEN:	510	case EIO_OPEN:
491	{	511	{
492	/* convert fd to fh */	512	/* convert fd to fh */
493	SV *fh;	513	SV *fh = &PL_sv_undef;
494		514
495	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
496	PUTBACK;	516	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
498	SPAGAIN;	518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		519	char sym [64];
		520	int symlen;
		521
		522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		523	gv_init (gv, aio_stash, sym, symlen, 0);
499		524
500	fh = POPs;	525	symlen = snprintf (
501	PUSHMARK (SP);	526	sym,
		527	sizeof (sym),
		528	"%s&=%d",
		529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		530	(int)req->result
		531	);
		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
502	XPUSHs (fh);	537	PUSHs (fh);
503	}	538	}
504	break;	539	break;
505		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	#ifndef _WIN32
		547	if (req->result >= 0)
		548	{
		549	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		550	HV *hv = newHV ();
		551
		552	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		553
		554	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		555	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		556	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		557	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		558	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		559	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		560	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		561	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		562	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		563	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		564	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		565	}
		566	#endif
		567
		568	PUSHs (rv);
		569	}
		570
		571	break;
		572
506	case REQ_GROUP:	573	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	574	req->int1 = 2; /* mark group as finished */
508		575
509	if (req->sv1)	576	if (req->sv1)
510	{	577	{
511	int i;	578	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	582	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	583	PUSHs (*av_fetch (av, i, 0));
517	}	584	}
518	break;	585	break;
519		586
520	case REQ_NOP:	587	case EIO_NOP:
521	case REQ_BUSY:	588	case EIO_BUSY:
522	break;	589	break;
523		590
524	case REQ_READLINK:	591	case EIO_READLINK:
		592	case EIO_REALPATH:
525	if (req->result > 0)	593	if (req->result > 0)
526	{	594	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;	595	break;
532		596
533	case REQ_STAT:	597	case EIO_STAT:
534	case REQ_LSTAT:	598	case EIO_LSTAT:
535	case REQ_FSTAT:	599	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	600	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	601	PL_laststatval = req->result;
		602	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
538	PL_statcache = *(Stat_t *)(req->ptr2);	603	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	604	PUSHs (sv_result);
540	break;	605	break;
541		606
542	case REQ_READ:	607	case EIO_READ:
		608	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	609	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	610	*SvEND (req->sv2) = 0;
545	PUSHs (sv_2mortal (newSViv (req->result)));	611	SvPOK_only (req->sv2);
		612	SvSETMAGIC (req->sv2);
		613	PUSHs (sv_result);
		614	}
546	break;	615	break;
547		616
		617	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		618	if (req->result > 0)
		619	SvIV_set (sv_result, 0);
		620	/* FALLTHROUGH */
		621
548	default:	622	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	623	PUSHs (sv_result);
550	break;	624	break;
551	}	625	}
552		626
553	errno = req->errorno;	627	errno = req->errorno;
554		628
555	PUTBACK;	629	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	630	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	631	SPAGAIN;
		632
		633	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		634	SvREFCNT_dec (sv_result);
		635	else
		636	sv_result_cache = sv_result;
558		637
559	FREETMPS;	638	FREETMPS;
560	LEAVE;	639	LEAVE;
		640
		641	PUTBACK;
561	}	642	}
562		643
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);	644	return !!SvTRUE (ERRSV);
578	}	645	}
579		646
580	static void req_free (aio_req req)	647	static void req_destroy (aio_req req)
581	{	648	{
582	if (req->self)	649	if (req->self)
583	{	650	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	651	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	652	SvREFCNT_dec (req->self);
586	}	653	}
587		654
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	655	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	656	SvREFCNT_dec (req->sv2);
591	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
592		658
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	659	Safefree (req);
597	}	660	}
598		661
599	static void req_cancel_subs (aio_req grp)	662	static void req_cancel_subs (aio_req grp)
600	{	663	{
601	aio_req sub;
602
603	if (grp->type != REQ_GROUP)	664	if (grp->type != EIO_GROUP)
604	return;	665	return;
605		666
606	SvREFCNT_dec (grp->sv2);	667	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	668	grp->sv2 = 0;
608		669
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	670	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	671	}
612		672
613	static void req_cancel (aio_req req)	673	static void create_respipe (void)
614	{	674	{
615	req->flags |= FLAG_CANCELLED;	675	if (s_epipe_renew (&respipe))
616		676	croak ("IO::AIO: unable to initialize result pipe");
617	req_cancel_subs (req);
618	}	677	}
619		678
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 ()	679	static void poll_wait (void)
730	{	680	{
731	fd_set rfd;
732
733	while (nreqs)	681	while (eio_nreqs ())
734	{	682	{
735	int size;	683	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	684
		685	X_LOCK (reslock);
737	size = res_queue.size;	686	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	687	X_UNLOCK (reslock);
739		688
740	if (size)	689	if (size)
741	return;	690	return;
742		691
743	maybe_start_thread ();	692	etp_maybe_start_thread ();
744		693
745	FD_ZERO(&rfd);	694	s_epipe_wait (&respipe);
746	FD_SET(respipe [0], &rfd);
747
748	select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	695	}
750	}	696	}
751		697
752	static int poll_cb ()	698	static int poll_cb (void)
753	{	699	{
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 (;;)	700	for (;;)
767	{	701	{
768	for (;;)	702	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		703
772	LOCK (reslock);	704	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);	705	croak (0);
807	}
808		706
809	count++;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	708	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		709
829	poll_wait ();	710	poll_wait ();
830
831	++maxreqs;
832	}	711	}
833
834	unblock_sig ();
835	return count;
836	}	712	}
837		713
838	static void create_pipe ()	714	static void ecb_cold
		715	reinit (void)
839	{	716	{
840	if (pipe (respipe))	717	create_respipe ();
841	croak ("unable to initialize result pipe");
842		718
843	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	719	if (eio_init (want_poll, done_poll) < 0)
844	croak ("cannot set result pipe to nonblocking mode");	720	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	}	721	}
849		722
850	/*****************************************************************************/	723	/*****************************************************************************/
851	/* work around various missing functions */
852		724
853	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
854	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
855	# define pwrite aio_pwrite	727	# 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	728	#endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000		729
1001	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
1002	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1003	#if __solaris	732	# define PROT_NONE 0
1004	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
1005	#endif	737	#endif
1006	)
1007	)
1008	{
1009	/* emulate sendfile. this is a major pain in the ass */
1010	dBUF;
1011		738
1012	res = 0;	739	#define MMAP_MAGIC PERL_MAGIC_ext
1013		740
1014	while (count)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
1015	{	742	{
1016	ssize_t cnt;	743	int old_errno = errno;
1017		744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	745	errno = old_errno;
1019		746
1020	if (cnt <= 0)	747	mg->mg_obj = 0; /* just in case */
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025		748
1026	cnt = write (ofd, aio_buf, cnt);	749	SvREADONLY_off (sv);
1027		750
1028	if (cnt <= 0)	751	if (SvPVX (sv) != mg->mg_ptr)
1029	{	752	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1030	if (cnt && !res) res = -1;
1031	break;
1032	}
1033		753
1034	offset += cnt;	754	SvCUR_set (sv, 0);
1035	res += cnt;	755	SvPVX (sv) = 0;
1036	count -= cnt;	756	SvOK_off (sv);
1037	}
1038	}
1039		757
1040	return res;	758	return 0;
1041	}	759	}
1042		760
1043	/* read a full directory */	761	static MGVTBL mmap_vtbl = {
1044	static void scandir_ (aio_req req, worker *self)	762	0, 0, 0, 0, mmap_free
1045	{	763	};
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		764
1105	/*****************************************************************************/	765	/*****************************************************************************/
1106		766
1107	static void *aio_proc (void *thr_arg)	767	static SV * get_cb (SV *cb_sv)
1108	{	768	{
1109	aio_req req;	769	SvGETMAGIC (cb_sv);
1110	struct timespec ts;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1111	worker *self = (worker *)thr_arg;
1112
1113	/* try to distribute timeouts somewhat evenly */
1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115	* (1000000000UL / 1024UL);
1116
1117	for (;;)
1118	{
1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121	LOCK (reqlock);
1122
1123	for (;;)
1124	{
1125	self->req = req = reqq_shift (&req_queue);
1126
1127	if (req)
1128	break;
1129
1130	++idle;
1131
1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133	== ETIMEDOUT)
1134	{
1135	if (idle > max_idle)
1136	{
1137	--idle;
1138	UNLOCK (reqlock);
1139	LOCK (wrklock);
1140	--started;
1141	UNLOCK (wrklock);
1142	goto quit;
1143	}
1144
1145	/* we are allowed to idle, so do so without any timeout */
1146	pthread_cond_wait (&reqwait, &reqlock);
1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148	}
1149
1150	--idle;
1151	}
1152
1153	--nready;
1154
1155	UNLOCK (reqlock);
1156
1157	errno = 0; /* strictly unnecessary */
1158
1159	if (!(req->flags & FLAG_CANCELLED))
1160	switch (req->type)
1161	{
1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173	case REQ_CLOSE: req->result = close (req->int1); break;
1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1177	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1178	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1179	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1180	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1181
1182	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1183	case REQ_FSYNC: req->result = fsync (req->int1); break;
1184	case REQ_READDIR: scandir_ (req, self); break;
1185
1186	case REQ_BUSY:
1187	{
1188	struct timeval tv;
1189
1190	tv.tv_sec = req->int1;
1191	tv.tv_usec = req->int2;
1192
1193	req->result = select (0, 0, 0, 0, &tv);
1194	}
1195
1196	case REQ_GROUP:
1197	case REQ_NOP:
1198	break;
1199
1200	case REQ_QUIT:
1201	goto quit;
1202
1203	default:
1204	req->result = ENOSYS;
1205	break;
1206	}
1207
1208	req->errorno = errno;
1209
1210	LOCK (reslock);
1211
1212	++npending;
1213
1214	if (!reqq_push (&res_queue, req))
1215	{
1216	/* write a dummy byte to the pipe so fh becomes ready */
1217	write (respipe [1], &respipe, 1);
1218
1219	/* optionally signal the main thread asynchronously */
1220	if (main_sig)
1221	pthread_kill (main_tid, main_sig);
1222	}
1223
1224	self->req = 0;
1225	worker_clear (self);
1226
1227	UNLOCK (reslock);
1228	}
1229
1230	quit:
1231	LOCK (wrklock);
1232	worker_free (self);
1233	UNLOCK (wrklock);
1234
1235	return 0;
1236	}
1237
1238	/*****************************************************************************/
1239
1240	static void atfork_prepare (void)
1241	{
1242	LOCK (wrklock);
1243	LOCK (reqlock);
1244	LOCK (reslock);
1245	#if !HAVE_PREADWRITE
1246	LOCK (preadwritelock);
1247	#endif
1248	#if !HAVE_READDIR_R
1249	LOCK (readdirlock);
1250	#endif
1251	}
1252
1253	static void atfork_parent (void)
1254	{
1255	#if !HAVE_READDIR_R
1256	UNLOCK (readdirlock);
1257	#endif
1258	#if !HAVE_PREADWRITE
1259	UNLOCK (preadwritelock);
1260	#endif
1261	UNLOCK (reslock);
1262	UNLOCK (reqlock);
1263	UNLOCK (wrklock);
1264	}
1265
1266	static void atfork_child (void)
1267	{
1268	aio_req prv;
1269
1270	while (prv = reqq_shift (&req_queue))
1271	req_free (prv);
1272
1273	while (prv = reqq_shift (&res_queue))
1274	req_free (prv);
1275
1276	while (wrk_first.next != &wrk_first)
1277	{
1278	worker *wrk = wrk_first.next;
1279
1280	if (wrk->req)
1281	req_free (wrk->req);
1282
1283	worker_clear (wrk);
1284	worker_free (wrk);
1285	}
1286
1287	started = 0;
1288	idle = 0;
1289	nreqs = 0;
1290	nready = 0;
1291	npending = 0;
1292
1293	close (respipe [0]);
1294	close (respipe [1]);
1295	create_pipe ();
1296
1297	atfork_parent ();
1298	}	771	}
1299		772
1300	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
1301	aio_req req; \	775	aio_req req; \
1302	int req_pri = next_pri; \	776	int req_pri = next_pri; \
1303	next_pri = DEFAULT_PRI + PRI_BIAS; \	777	next_pri = EIO_PRI_DEFAULT; \
1304	\	778	\
1305	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
1306	croak ("callback must be undef or of reference type"); \
1307	\	780	\
1308	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
1309	if (!req) \	782	if (!req) \
1310	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
1311	\	784	\
1312	req->callback = newSVsv (callback); \	785	req->callback = SvREFCNT_inc (cb_cv); \
1313	req->pri = req_pri	786	req->pri = req_pri
1314		787
1315	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
1316	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
1317	\	792	\
1318	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
1319	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
1320		795
1321	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
1322		797
1323	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
1324		799
1325	BOOT:	800	BOOT:
1326	{	801	{
		802	static const struct {
		803	const char *name;
		804	IV iv;
		805	} *civ, const_iv[] = {
		806	# define const_niv(name, value) { # name, (IV) value },
		807	# define const_iv(name) { # name, (IV) name },
		808	# define const_eio(name) { # name, (IV) EIO_ ## name },
		809	const_iv (EXDEV)
		810	const_iv (ENOSYS)
		811	const_iv (O_RDONLY)
		812	const_iv (O_WRONLY)
		813	const_iv (O_RDWR)
		814	const_iv (O_CREAT)
		815	const_iv (O_TRUNC)
		816	const_iv (O_EXCL)
		817	const_iv (O_APPEND)
		818
		819	const_iv (O_ASYNC)
		820	const_iv (O_DIRECT)
		821	const_iv (O_NOATIME)
		822
		823	const_iv (O_CLOEXEC)
		824	const_iv (O_NOCTTY)
		825	const_iv (O_NOFOLLOW)
		826	const_iv (O_NONBLOCK)
		827	const_iv (O_EXEC)
		828	const_iv (O_SEARCH)
		829	const_iv (O_DIRECTORY)
		830	const_iv (O_DSYNC)
		831	const_iv (O_RSYNC)
		832	const_iv (O_SYNC)
		833	const_iv (O_TTY_INIT)
		834
		835	const_iv (S_IFIFO)
		836	const_iv (S_IFCHR)
		837	const_iv (S_IFBLK)
		838	const_iv (S_IFLNK)
		839	const_iv (S_IFREG)
		840	const_iv (S_IFDIR)
		841	const_iv (S_IFWHT)
		842	const_iv (S_IFSOCK)
		843	const_iv (S_IFMT)
		844
		845	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		846	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		847	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		848	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		849	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		850	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		851
		852	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		853	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		854	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		855	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		856	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		857
		858	const_iv (ST_RDONLY)
		859	const_iv (ST_NOSUID)
		860	const_iv (ST_NODEV)
		861	const_iv (ST_NOEXEC)
		862	const_iv (ST_SYNCHRONOUS)
		863	const_iv (ST_MANDLOCK)
		864	const_iv (ST_WRITE)
		865	const_iv (ST_APPEND)
		866	const_iv (ST_IMMUTABLE)
		867	const_iv (ST_NOATIME)
		868	const_iv (ST_NODIRATIME)
		869	const_iv (ST_RELATIME)
		870
		871	const_iv (PROT_NONE)
		872	const_iv (PROT_EXEC)
		873	const_iv (PROT_READ)
		874	const_iv (PROT_WRITE)
		875
		876	/*const_iv (MAP_FIXED)*/
		877	const_iv (MAP_PRIVATE)
		878	const_iv (MAP_SHARED)
		879	const_iv (MAP_ANONYMOUS)
		880
		881	/* linuxish */
		882	const_iv (MAP_HUGETLB)
		883	const_iv (MAP_LOCKED)
		884	const_iv (MAP_NORESERVE)
		885	const_iv (MAP_POPULATE)
		886	const_iv (MAP_NONBLOCK)
		887
		888	const_eio (MCL_FUTURE)
		889	const_eio (MCL_CURRENT)
		890
		891	const_eio (MS_ASYNC)
		892	const_eio (MS_INVALIDATE)
		893	const_eio (MS_SYNC)
		894
		895	const_eio (MT_MODIFY)
		896
		897	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		898	const_eio (SYNC_FILE_RANGE_WRITE)
		899	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		900
		901	const_eio (FALLOC_FL_KEEP_SIZE)
		902
		903	const_eio (READDIR_DENTS)
		904	const_eio (READDIR_DIRS_FIRST)
		905	const_eio (READDIR_STAT_ORDER)
		906	const_eio (READDIR_FOUND_UNKNOWN)
		907
		908	const_eio (DT_UNKNOWN)
		909	const_eio (DT_FIFO)
		910	const_eio (DT_CHR)
		911	const_eio (DT_DIR)
		912	const_eio (DT_BLK)
		913	const_eio (DT_REG)
		914	const_eio (DT_LNK)
		915	const_eio (DT_SOCK)
		916	const_eio (DT_WHT)
		917	};
		918
1327	HV *stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
		920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1328		922
1329	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1330	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1331	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1332	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1333	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1334	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1335	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1336		925
1337	create_pipe ();	926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1338	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1339	}
1340		927
		928	reinit ();
		929	}
		930
1341	void	931	void
		932	reinit ()
		933	PROTOTYPE:
		934
		935	void
1342	max_poll_reqs (int nreqs)	936	max_poll_reqs (unsigned int nreqs)
1343	PROTOTYPE: $	937	PROTOTYPE: $
1344	CODE:	938	CODE:
1345	max_poll_reqs = nreqs;	939	eio_set_max_poll_reqs (nreqs);
1346		940
1347	void	941	void
1348	max_poll_time (double nseconds)	942	max_poll_time (double nseconds)
1349	PROTOTYPE: $	943	PROTOTYPE: $
1350	CODE:	944	CODE:
1351	max_poll_time = nseconds * AIO_TICKS;	945	eio_set_max_poll_time (nseconds);
1352		946
1353	void	947	void
1354	min_parallel (int nthreads)	948	min_parallel (unsigned int nthreads)
1355	PROTOTYPE: $
1356
1357	void
1358	max_parallel (int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_idle (int nthreads)
1363	PROTOTYPE: $	949	PROTOTYPE: $
1364	CODE:	950	CODE:
1365	set_max_idle (nthreads);	951	eio_set_min_parallel (nthreads);
1366		952
1367	int	953	void
1368	max_outstanding (int maxreqs)	954	max_parallel (unsigned int nthreads)
1369	PROTOTYPE: $	955	PROTOTYPE: $
1370	CODE:	956	CODE:
1371	RETVAL = max_outstanding;	957	eio_set_max_parallel (nthreads);
		958
		959	void
		960	max_idle (unsigned int nthreads)
		961	PROTOTYPE: $
		962	CODE:
		963	eio_set_max_idle (nthreads);
		964
		965	void
		966	idle_timeout (unsigned int seconds)
		967	PROTOTYPE: $
		968	CODE:
		969	eio_set_idle_timeout (seconds);
		970
		971	void
		972	max_outstanding (unsigned int maxreqs)
		973	PROTOTYPE: $
		974	CODE:
1372	max_outstanding = maxreqs;	975	max_outstanding = maxreqs;
1373	OUTPUT:
1374	RETVAL
1375		976
1376	void	977	void
1377	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	978	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1378	SV8 * pathname
1379	int flags
1380	int mode
1381	SV * callback
1382	PROTOTYPE: $$$;$
1383	PPCODE:	979	PPCODE:
1384	{	980	{
1385	dREQ;	981	dREQ;
1386		982
1387	req->type = REQ_OPEN;	983	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	984	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	985	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	986	req->int1 = flags;
1391	req->mode = mode;	987	req->int2 = mode;
1392		988
1393	REQ_SEND;	989	REQ_SEND;
1394	}	990	}
1395		991
1396	void	992	void
1397	aio_close (fh,callback=&PL_sv_undef)	993	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	SV * fh
1399	SV * callback
1400	PROTOTYPE: $;$
1401	ALIAS:	994	ALIAS:
1402	aio_close = REQ_CLOSE
1403	aio_fsync = REQ_FSYNC	995	aio_fsync = EIO_FSYNC
1404	aio_fdatasync = REQ_FDATASYNC	996	aio_fdatasync = EIO_FDATASYNC
		997	aio_syncfs = EIO_SYNCFS
1405	PPCODE:	998	PPCODE:
1406	{	999	{
		1000	int fd = s_fileno_croak (fh, 0);
1407	dREQ;	1001	dREQ;
1408		1002
1409	req->type = ix;	1003	req->type = ix;
1410	req->fh = newSVsv (fh);	1004	req->sv1 = newSVsv (fh);
1411	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1005	req->int1 = fd;
1412		1006
1413	REQ_SEND (req);	1007	REQ_SEND (req);
1414	}	1008	}
1415		1009
1416	void	1010	void
		1011	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1012	PPCODE:
		1013	{
		1014	int fd = s_fileno_croak (fh, 0);
		1015	dREQ;
		1016
		1017	req->type = EIO_SYNC_FILE_RANGE;
		1018	req->sv1 = newSVsv (fh);
		1019	req->int1 = fd;
		1020	req->offs = offset;
		1021	req->size = nbytes;
		1022	req->int2 = flags;
		1023
		1024	REQ_SEND (req);
		1025	}
		1026
		1027	void
		1028	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1029	PPCODE:
		1030	{
		1031	int fd = s_fileno_croak (fh, 0);
		1032	dREQ;
		1033
		1034	req->type = EIO_FALLOCATE;
		1035	req->sv1 = newSVsv (fh);
		1036	req->int1 = fd;
		1037	req->int2 = mode;
		1038	req->offs = offset;
		1039	req->size = len;
		1040
		1041	REQ_SEND (req);
		1042	}
		1043
		1044	void
		1045	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1046	PPCODE:
		1047	{
		1048	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1049	int fd = s_fileno_croak (fh, 0);
		1050	dREQ;
		1051
		1052	if (expect_false (close_fd < 0))
		1053	{
		1054	int pipefd [2];
		1055
		1056	if (
		1057	#ifdef _WIN32
		1058	_pipe (pipefd, 1, _O_BINARY) < 0
		1059	#else
		1060	pipe (pipefd) < 0
		1061	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1062	#endif
		1063	|| close (pipefd [1]) < 0
		1064	)
		1065	abort (); /*D*/
		1066
		1067	close_fd = pipefd [0];
		1068	}
		1069
		1070	req->type = EIO_DUP2;
		1071	req->int1 = close_fd;
		1072	req->sv2 = newSVsv (fh);
		1073	req->int2 = fd;
		1074
		1075	REQ_SEND (req);
		1076	}
		1077
		1078	void
1417	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1079	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1418	SV * fh
1419	UV offset
1420	UV length
1421	SV8 * data
1422	UV dataoffset
1423	SV * callback
1424	ALIAS:	1080	ALIAS:
1425	aio_read = REQ_READ	1081	aio_read = EIO_READ
1426	aio_write = REQ_WRITE	1082	aio_write = EIO_WRITE
1427	PROTOTYPE: $$$$$;$
1428	PPCODE:	1083	PPCODE:
1429	{	1084	{
1430	STRLEN svlen;	1085	STRLEN svlen;
		1086	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1431	char *svptr = SvPVbyte (data, svlen);	1087	char *svptr = SvPVbyte (data, svlen);
1432		1088	UV len = SvUV (length);
1433	SvUPGRADE (data, SVt_PV);
1434	SvPOK_on (data);
1435		1089
1436	if (dataoffset < 0)	1090	if (dataoffset < 0)
1437	dataoffset += svlen;	1091	dataoffset += svlen;
1438		1092
1439	if (dataoffset < 0 || dataoffset > svlen)	1093	if (dataoffset < 0 || dataoffset > svlen)
1440	croak ("data offset outside of string");	1094	croak ("dataoffset outside of data scalar");
1441		1095
1442	if (ix == REQ_WRITE)	1096	if (ix == EIO_WRITE)
1443	{	1097	{
1444	/* write: check length and adjust. */	1098	/* write: check length and adjust. */
1445	if (length < 0 || length + dataoffset > svlen)	1099	if (!SvOK (length) || len + dataoffset > svlen)
1446	length = svlen - dataoffset;	1100	len = svlen - dataoffset;
1447	}	1101	}
1448	else	1102	else
1449	{	1103	{
1450	/* read: grow scalar as necessary */	1104	/* read: check type and grow scalar as necessary */
		1105	SvUPGRADE (data, SVt_PV);
1451	svptr = SvGROW (data, length + dataoffset + 1);	1106	svptr = SvGROW (data, len + dataoffset + 1);
1452	}	1107	}
1453
1454	if (length < 0)
1455	croak ("length must not be negative");
1456		1108
1457	{	1109	{
1458	dREQ;	1110	dREQ;
1459		1111
1460	req->type = ix;	1112	req->type = ix;
1461	req->fh = newSVsv (fh);	1113	req->sv1 = newSVsv (fh);
1462	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1114	req->int1 = fd;
1463	: IoOFP (sv_2io (fh)));	1115	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1464	req->offs = offset;
1465	req->size = length;	1116	req->size = len;
1466	req->sv1 = SvREFCNT_inc (data);	1117	req->sv2 = SvREFCNT_inc (data);
1467	req->ptr1 = (char *)svptr + dataoffset;	1118	req->ptr2 = (char *)svptr + dataoffset;
1468	req->stroffset = dataoffset;	1119	req->stroffset = dataoffset;
1469		1120
1470	if (!SvREADONLY (data))	1121	if (!SvREADONLY (data))
1471	{	1122	{
1472	SvREADONLY_on (data);	1123	SvREADONLY_on (data);
1473	req->flags |= FLAG_SV1_RO_OFF;	1124	req->flags |= FLAG_SV2_RO_OFF;
1474	}	1125	}
1475		1126
1476	REQ_SEND;	1127	REQ_SEND;
1477	}	1128	}
1478	}	1129	}
1479		1130
1480	void	1131	void
1481	aio_readlink (path,callback=&PL_sv_undef)	1132	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1482	SV8 * path	1133	ALIAS:
1483	SV * callback	1134	aio_readlink = EIO_READLINK
1484	PROTOTYPE: $$;$	1135	aio_realpath = EIO_REALPATH
1485	PPCODE:	1136	PPCODE:
1486	{	1137	{
1487	SV *data;
1488	dREQ;	1138	dREQ;
1489		1139
1490	data = newSV (NAME_MAX);
1491	SvPOK_on (data);
1492
1493	req->type = REQ_READLINK;	1140	req->type = ix;
1494	req->fh = newSVsv (path);	1141	req->sv1 = newSVsv (path);
1495	req->ptr2 = SvPVbyte_nolen (req->fh);	1142	req->ptr1 = SvPVbyte_nolen (req->sv1);
1496	req->sv1 = data;
1497	req->ptr1 = SvPVbyte_nolen (data);
1498		1143
1499	REQ_SEND;	1144	REQ_SEND;
1500	}	1145	}
1501		1146
1502	void	1147	void
1503	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1148	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1504	SV * out_fh
1505	SV * in_fh
1506	UV in_offset
1507	UV length
1508	SV * callback
1509	PROTOTYPE: $$$$;$
1510	PPCODE:	1149	PPCODE:
1511	{	1150	{
		1151	int ifd = s_fileno_croak (in_fh , 0);
		1152	int ofd = s_fileno_croak (out_fh, 1);
1512	dREQ;	1153	dREQ;
1513		1154
1514	req->type = REQ_SENDFILE;	1155	req->type = EIO_SENDFILE;
1515	req->fh = newSVsv (out_fh);	1156	req->sv1 = newSVsv (out_fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1157	req->int1 = ofd;
1517	req->sv2 = newSVsv (in_fh);	1158	req->sv2 = newSVsv (in_fh);
1518	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1159	req->int2 = ifd;
1519	req->offs = in_offset;	1160	req->offs = in_offset;
1520	req->size = length;	1161	req->size = length;
1521		1162
1522	REQ_SEND;	1163	REQ_SEND;
1523	}	1164	}
1524		1165
1525	void	1166	void
1526	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1167	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1527	SV * fh
1528	UV offset
1529	IV length
1530	SV * callback
1531	PROTOTYPE: $$$;$
1532	PPCODE:	1168	PPCODE:
1533	{	1169	{
		1170	int fd = s_fileno_croak (fh, 0);
1534	dREQ;	1171	dREQ;
1535		1172
1536	req->type = REQ_READAHEAD;	1173	req->type = EIO_READAHEAD;
1537	req->fh = newSVsv (fh);	1174	req->sv1 = newSVsv (fh);
1538	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1175	req->int1 = fd;
1539	req->offs = offset;	1176	req->offs = offset;
1540	req->size = length;	1177	req->size = length;
1541		1178
1542	REQ_SEND;	1179	REQ_SEND;
1543	}	1180	}
1544		1181
1545	void	1182	void
1546	aio_stat (fh_or_path,callback=&PL_sv_undef)	1183	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1547	SV8 * fh_or_path
1548	SV * callback
1549	ALIAS:	1184	ALIAS:
1550	aio_stat = REQ_STAT	1185	aio_stat = EIO_STAT
1551	aio_lstat = REQ_LSTAT	1186	aio_lstat = EIO_LSTAT
		1187	aio_statvfs = EIO_STATVFS
1552	PPCODE:	1188	PPCODE:
1553	{	1189	{
1554	dREQ;	1190	dREQ;
1555		1191
1556	req->ptr2 = malloc (sizeof (Stat_t));	1192	req->sv1 = newSVsv (fh_or_path);
1557	if (!req->ptr2)
1558	{
1559	req_free (req);
1560	croak ("out of memory during aio_stat statdata allocation");
1561	}
1562		1193
1563	req->flags |= FLAG_PTR2_FREE;	1194	if (SvPOK (req->sv1))
1564
1565	if (SvPOK (fh_or_path))
1566	{	1195	{
1567	req->type = ix;	1196	req->type = ix;
1568	req->sv1 = newSVsv (fh_or_path);
1569	req->ptr1 = SvPVbyte_nolen (req->sv1);	1197	req->ptr1 = SvPVbyte_nolen (req->sv1);
1570	}	1198	}
1571	else	1199	else
1572	{	1200	{
1573	req->type = REQ_FSTAT;	1201	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1574	req->fh = newSVsv (fh_or_path);
1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1202	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1576	}	1203	}
1577		1204
1578	REQ_SEND;	1205	REQ_SEND;
1579	}	1206	}
1580		1207
		1208	UV
		1209	major (UV dev)
		1210	ALIAS:
		1211	minor = 1
		1212	CODE:
		1213	RETVAL = ix ? major (dev) : minor (dev);
		1214	OUTPUT:
		1215	RETVAL
		1216
		1217	UV
		1218	makedev (UV maj, UV min)
		1219	CODE:
		1220	RETVAL = makedev (maj, min);
		1221	OUTPUT:
		1222	RETVAL
		1223
1581	void	1224	void
		1225	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1226	PPCODE:
		1227	{
		1228	dREQ;
		1229
		1230	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1231	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1232	req->sv1 = newSVsv (fh_or_path);
		1233
		1234	if (SvPOK (req->sv1))
		1235	{
		1236	req->type = EIO_UTIME;
		1237	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1238	}
		1239	else
		1240	{
		1241	req->type = EIO_FUTIME;
		1242	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1243	}
		1244
		1245	REQ_SEND;
		1246	}
		1247
		1248	void
		1249	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1250	PPCODE:
		1251	{
		1252	dREQ;
		1253
		1254	req->sv1 = newSVsv (fh_or_path);
		1255	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1256
		1257	if (SvPOK (req->sv1))
		1258	{
		1259	req->type = EIO_TRUNCATE;
		1260	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1261	}
		1262	else
		1263	{
		1264	req->type = EIO_FTRUNCATE;
		1265	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1266	}
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1273	ALIAS:
		1274	aio_chmod = EIO_CHMOD
		1275	aio_mkdir = EIO_MKDIR
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->int2 = mode;
		1281	req->sv1 = newSVsv (fh_or_path);
		1282
		1283	if (SvPOK (req->sv1))
		1284	{
		1285	req->type = ix;
		1286	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1287	}
		1288	else
		1289	{
		1290	req->type = EIO_FCHMOD;
		1291	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1292	}
		1293
		1294	REQ_SEND;
		1295	}
		1296
		1297	void
		1298	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1299	PPCODE:
		1300	{
		1301	dREQ;
		1302
		1303	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1304	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1305	req->sv1 = newSVsv (fh_or_path);
		1306
		1307	if (SvPOK (req->sv1))
		1308	{
		1309	req->type = EIO_CHOWN;
		1310	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1311	}
		1312	else
		1313	{
		1314	req->type = EIO_FCHOWN;
		1315	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1316	}
		1317
		1318	REQ_SEND;
		1319	}
		1320
		1321	void
		1322	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1323	PPCODE:
		1324	{
		1325	dREQ;
		1326
		1327	req->type = EIO_READDIR;
		1328	req->sv1 = newSVsv (pathname);
		1329	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1330	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1331
		1332	if (flags & EIO_READDIR_DENTS)
		1333	req->int1 |= EIO_READDIR_CUSTOM2;
		1334
		1335	REQ_SEND;
		1336	}
		1337
		1338	void
1582	aio_unlink (pathname,callback=&PL_sv_undef)	1339	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1583	SV8 * pathname
1584	SV * callback
1585	ALIAS:	1340	ALIAS:
1586	aio_unlink = REQ_UNLINK	1341	aio_unlink = EIO_UNLINK
1587	aio_rmdir = REQ_RMDIR	1342	aio_rmdir = EIO_RMDIR
1588	aio_readdir = REQ_READDIR	1343	aio_readdir = EIO_READDIR
1589	PPCODE:	1344	PPCODE:
1590	{	1345	{
1591	dREQ;	1346	dREQ;
1592		1347
1593	req->type = ix;	1348	req->type = ix;
…		…
1596		1351
1597	REQ_SEND;	1352	REQ_SEND;
1598	}	1353	}
1599		1354
1600	void	1355	void
1601	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1356	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1602	SV8 * oldpath
1603	SV8 * newpath
1604	SV * callback
1605	ALIAS:	1357	ALIAS:
1606	aio_link = REQ_LINK	1358	aio_link = EIO_LINK
1607	aio_symlink = REQ_SYMLINK	1359	aio_symlink = EIO_SYMLINK
1608	aio_rename = REQ_RENAME	1360	aio_rename = EIO_RENAME
1609	PPCODE:	1361	PPCODE:
1610	{	1362	{
1611	dREQ;	1363	dREQ;
1612		1364
1613	req->type = ix;	1365	req->type = ix;
1614	req->fh = newSVsv (oldpath);	1366	req->sv1 = newSVsv (oldpath);
1615	req->ptr2 = SvPVbyte_nolen (req->fh);
1616	req->sv1 = newSVsv (newpath);
1617	req->ptr1 = SvPVbyte_nolen (req->sv1);	1367	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1368	req->sv2 = newSVsv (newpath);
		1369	req->ptr2 = SvPVbyte_nolen (req->sv2);
1618		1370
1619	REQ_SEND;	1371	REQ_SEND;
1620	}	1372	}
1621		1373
1622	void	1374	void
1623	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1375	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1624	SV8 * pathname
1625	SV * callback
1626	UV mode
1627	UV dev
1628	PPCODE:	1376	PPCODE:
1629	{	1377	{
1630	dREQ;	1378	dREQ;
1631		1379
1632	req->type = REQ_MKNOD;	1380	req->type = EIO_MKNOD;
1633	req->sv1 = newSVsv (pathname);	1381	req->sv1 = newSVsv (pathname);
1634	req->ptr1 = SvPVbyte_nolen (req->sv1);	1382	req->ptr1 = SvPVbyte_nolen (req->sv1);
1635	req->mode = (mode_t)mode;	1383	req->int2 = (mode_t)mode;
1636	req->offs = dev;	1384	req->offs = dev;
1637		1385
1638	REQ_SEND;	1386	REQ_SEND;
1639	}	1387	}
1640		1388
1641	void	1389	void
		1390	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1391	ALIAS:
		1392	aio_mtouch = EIO_MTOUCH
		1393	aio_msync = EIO_MSYNC
		1394	PPCODE:
		1395	{
		1396	STRLEN svlen;
		1397	char *svptr = SvPVbyte (data, svlen);
		1398	UV len = SvUV (length);
		1399
		1400	if (offset < 0)
		1401	offset += svlen;
		1402
		1403	if (offset < 0 || offset > svlen)
		1404	croak ("offset outside of scalar");
		1405
		1406	if (!SvOK (length) || len + offset > svlen)
		1407	len = svlen - offset;
		1408
		1409	{
		1410	dREQ;
		1411
		1412	req->type = ix;
		1413	req->sv2 = SvREFCNT_inc (data);
		1414	req->ptr2 = (char *)svptr + offset;
		1415	req->size = len;
		1416	req->int1 = flags;
		1417
		1418	REQ_SEND;
		1419	}
		1420	}
		1421
		1422	void
		1423	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1424	PPCODE:
		1425	{
		1426	STRLEN svlen;
		1427	char *svptr = SvPVbyte (data, svlen);
		1428	UV len = SvUV (length);
		1429
		1430	if (offset < 0)
		1431	offset += svlen;
		1432
		1433	if (offset < 0 || offset > svlen)
		1434	croak ("offset outside of scalar");
		1435
		1436	if (!SvOK (length) || len + offset > svlen)
		1437	len = svlen - offset;
		1438
		1439	{
		1440	dREQ;
		1441
		1442	req->type = EIO_MLOCK;
		1443	req->sv2 = SvREFCNT_inc (data);
		1444	req->ptr2 = (char *)svptr + offset;
		1445	req->size = len;
		1446
		1447	REQ_SEND;
		1448	}
		1449	}
		1450
		1451	void
		1452	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1453	PPCODE:
		1454	{
		1455	dREQ;
		1456
		1457	req->type = EIO_MLOCKALL;
		1458	req->int1 = flags;
		1459
		1460	REQ_SEND;
		1461	}
		1462
		1463	void
1642	aio_busy (delay,callback=&PL_sv_undef)	1464	aio_busy (double delay, SV *callback=&PL_sv_undef)
1643	double delay
1644	SV * callback
1645	PPCODE:	1465	PPCODE:
1646	{	1466	{
1647	dREQ;	1467	dREQ;
1648		1468
1649	req->type = REQ_BUSY;	1469	req->type = EIO_BUSY;
1650	req->int1 = delay < 0. ? 0 : delay;	1470	req->nv1 = delay < 0. ? 0. : delay;
1651	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1652		1471
1653	REQ_SEND;	1472	REQ_SEND;
1654	}	1473	}
1655		1474
1656	void	1475	void
1657	aio_group (callback=&PL_sv_undef)	1476	aio_group (SV *callback=&PL_sv_undef)
1658	SV * callback
1659	PROTOTYPE: ;$
1660	PPCODE:	1477	PPCODE:
1661	{	1478	{
1662	dREQ;	1479	dREQ;
1663		1480
1664	req->type = REQ_GROUP;	1481	req->type = EIO_GROUP;
1665		1482
1666	req_send (req);	1483	req_submit (req);
1667	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1484	XPUSHs (req_sv (req, aio_grp_stash));
1668	}	1485	}
1669		1486
1670	void	1487	void
1671	aio_nop (callback=&PL_sv_undef)	1488	aio_nop (SV *callback=&PL_sv_undef)
1672	SV * callback	1489	ALIAS:
		1490	aio_nop = EIO_NOP
		1491	aio_sync = EIO_SYNC
1673	PPCODE:	1492	PPCODE:
1674	{	1493	{
1675	dREQ;	1494	dREQ;
1676		1495
1677	req->type = REQ_NOP;	1496	req->type = ix;
1678		1497
1679	REQ_SEND;	1498	REQ_SEND;
1680	}	1499	}
1681		1500
1682	int	1501	int
1683	aioreq_pri (int pri = 0)	1502	aioreq_pri (int pri = 0)
1684	PROTOTYPE: ;$
1685	CODE:	1503	CODE:
1686	RETVAL = next_pri - PRI_BIAS;	1504	RETVAL = next_pri;
1687	if (items > 0)	1505	if (items > 0)
1688	{	1506	{
1689	if (pri < PRI_MIN) pri = PRI_MIN;	1507	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1690	if (pri > PRI_MAX) pri = PRI_MAX;	1508	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1691	next_pri = pri + PRI_BIAS;	1509	next_pri = pri;
1692	}	1510	}
1693	OUTPUT:	1511	OUTPUT:
1694	RETVAL	1512	RETVAL
1695		1513
1696	void	1514	void
1697	aioreq_nice (int nice = 0)	1515	aioreq_nice (int nice = 0)
1698	CODE:	1516	CODE:
1699	nice = next_pri - nice;	1517	nice = next_pri - nice;
1700	if (nice < PRI_MIN) nice = PRI_MIN;	1518	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1701	if (nice > PRI_MAX) nice = PRI_MAX;	1519	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1702	next_pri = nice + PRI_BIAS;	1520	next_pri = nice;
1703		1521
1704	void	1522	void
1705	flush ()	1523	flush ()
1706	PROTOTYPE:
1707	CODE:	1524	CODE:
1708	while (nreqs)	1525	while (eio_nreqs ())
1709	{	1526	{
1710	poll_wait ();	1527	poll_wait ();
1711	poll_cb ();	1528	poll_cb ();
1712	}	1529	}
1713		1530
1714	int	1531	int
1715	poll()	1532	poll ()
1716	PROTOTYPE:
1717	CODE:	1533	CODE:
1718	poll_wait ();	1534	poll_wait ();
1719	RETVAL = poll_cb ();	1535	RETVAL = poll_cb ();
1720	OUTPUT:	1536	OUTPUT:
1721	RETVAL	1537	RETVAL
1722		1538
1723	int	1539	int
1724	poll_fileno()	1540	poll_fileno ()
1725	PROTOTYPE:
1726	CODE:	1541	CODE:
1727	RETVAL = respipe [0];	1542	RETVAL = s_epipe_fd (&respipe);
1728	OUTPUT:	1543	OUTPUT:
1729	RETVAL	1544	RETVAL
1730		1545
1731	int	1546	int
1732	poll_cb(...)	1547	poll_cb (...)
1733	PROTOTYPE:	1548	PROTOTYPE:
1734	CODE:	1549	CODE:
1735	RETVAL = poll_cb ();	1550	RETVAL = poll_cb ();
1736	OUTPUT:	1551	OUTPUT:
1737	RETVAL	1552	RETVAL
1738		1553
1739	void	1554	void
1740	poll_wait()	1555	poll_wait ()
1741	PROTOTYPE:
1742	CODE:	1556	CODE:
1743	poll_wait ();	1557	poll_wait ();
1744		1558
1745	void
1746	setsig (int signum = SIGIO)
1747	PROTOTYPE: ;$
1748	CODE:
1749	{
1750	if (block_sig_level)
1751	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1752
1753	LOCK (reslock);
1754	main_tid = pthread_self ();
1755	main_sig = signum;
1756	UNLOCK (reslock);
1757
1758	if (main_sig && npending)
1759	pthread_kill (main_tid, main_sig);
1760	}
1761
1762	void
1763	aio_block (SV *cb)
1764	PROTOTYPE: &
1765	PPCODE:
1766	{
1767	int count;
1768
1769	block_sig ();
1770	PUSHMARK (SP);
1771	PUTBACK;
1772	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1773	SPAGAIN;
1774	unblock_sig ();
1775
1776	if (SvTRUE (ERRSV))
1777	croak (0);
1778
1779	XSRETURN (count);
1780	}
1781
1782	int	1559	int
1783	nreqs()	1560	nreqs ()
1784	PROTOTYPE:
1785	CODE:	1561	CODE:
1786	RETVAL = nreqs;	1562	RETVAL = eio_nreqs ();
1787	OUTPUT:	1563	OUTPUT:
1788	RETVAL	1564	RETVAL
1789		1565
1790	int	1566	int
1791	nready()	1567	nready ()
1792	PROTOTYPE:
1793	CODE:	1568	CODE:
1794	RETVAL = get_nready ();	1569	RETVAL = eio_nready ();
1795	OUTPUT:	1570	OUTPUT:
1796	RETVAL	1571	RETVAL
1797		1572
1798	int	1573	int
1799	npending()	1574	npending ()
1800	PROTOTYPE:
1801	CODE:	1575	CODE:
1802	RETVAL = get_npending ();	1576	RETVAL = eio_npending ();
1803	OUTPUT:	1577	OUTPUT:
1804	RETVAL	1578	RETVAL
1805		1579
1806	int	1580	int
1807	nthreads()	1581	nthreads ()
1808	PROTOTYPE:
1809	CODE:	1582	CODE:
1810	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1583	RETVAL = eio_nthreads ();
1811	RETVAL = started;
1812	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1813	OUTPUT:	1584	OUTPUT:
1814	RETVAL	1585	RETVAL
1815		1586
		1587	int
		1588	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1589	CODE:
		1590	RETVAL = posix_fadvise (fh, offset, length, advice);
		1591	OUTPUT:
		1592	RETVAL
		1593
		1594	IV
		1595	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1596	CODE:
		1597	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1598	OUTPUT:
		1599	RETVAL
		1600
		1601	void
		1602	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1603	PPCODE:
		1604	sv_unmagic (scalar, MMAP_MAGIC);
		1605	{
		1606	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1607	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1608	if (addr == (void *)-1)
		1609	XSRETURN_NO;
		1610
		1611	sv_force_normal (scalar);
		1612
		1613	/* we store the length in mg_obj, as namlen is I32 :/ */
		1614	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1615	->mg_obj = (SV *)length;
		1616
		1617	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1618
		1619	if (!(prot & PROT_WRITE))
		1620	SvREADONLY_on (scalar);
		1621
		1622	if (SvLEN (scalar))
		1623	Safefree (SvPVX (scalar));
		1624
		1625	SvPVX (scalar) = (char *)addr;
		1626	SvCUR_set (scalar, length);
		1627	SvLEN_set (scalar, 0);
		1628	SvPOK_only (scalar);
		1629
		1630	XSRETURN_YES;
		1631	}
		1632
		1633	void
		1634	munmap (SV *scalar)
		1635	CODE:
		1636	sv_unmagic (scalar, MMAP_MAGIC);
		1637
		1638	int
		1639	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1640	ALIAS:
		1641	mprotect = 1
		1642	CODE:
		1643	{
		1644	STRLEN svlen;
		1645	void *addr = SvPVbyte (scalar, svlen);
		1646	size_t len = SvUV (length);
		1647
		1648	if (offset < 0)
		1649	offset += svlen;
		1650
		1651	if (offset < 0 || offset > svlen)
		1652	croak ("offset outside of scalar");
		1653
		1654	if (!SvOK (length) || len + offset > svlen)
		1655	len = svlen - offset;
		1656
		1657	addr = (void *)(((intptr_t)addr) + offset);
		1658	eio_page_align (&addr, &len);
		1659
		1660	switch (ix)
		1661	{
		1662	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1663	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1664	}
		1665	}
		1666	OUTPUT:
		1667	RETVAL
		1668
		1669	int
		1670	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1671	CODE:
		1672	{
		1673	STRLEN svlen;
		1674	void *addr = SvPVbyte (scalar, svlen);
		1675	size_t len = SvUV (length);
		1676
		1677	if (offset < 0)
		1678	offset += svlen;
		1679
		1680	if (offset < 0 || offset > svlen)
		1681	croak ("offset outside of scalar");
		1682
		1683	if (!SvOK (length) || len + offset > svlen)
		1684	len = svlen - offset;
		1685
		1686	addr = (void *)(((intptr_t)addr) + offset);
		1687	eio_page_align (&addr, &len);
		1688	#if _POSIX_MEMLOCK_RANGE
		1689	RETVAL = munlock (addr, len);
		1690	#else
		1691	RETVAL = ((errno = ENOSYS), -1);
		1692	#endif
		1693	}
		1694	OUTPUT:
		1695	RETVAL
		1696
		1697	int
		1698	munlockall ()
		1699	CODE:
		1700	#if _POSIX_MEMLOCK
		1701	munlockall ();
		1702	#else
		1703	RETVAL = -1;
		1704	errno = ENOSYS;
		1705	#endif
		1706	OUTPUT:
		1707	RETVAL
		1708
		1709	void _on_next_submit (SV *cb)
		1710	CODE:
		1711	SvREFCNT_dec (on_next_submit);
		1712	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1713
1816	PROTOTYPES: DISABLE	1714	PROTOTYPES: DISABLE
1817		1715
1818	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1716	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1819		1717
1820	void	1718	void
1821	cancel (aio_req_ornot req)	1719	cancel (aio_req_ornot req)
1822	CODE:	1720	CODE:
1823	req_cancel (req);	1721	eio_cancel (req);
1824		1722
1825	void	1723	void
1826	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1724	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1827	CODE:	1725	PPCODE:
		1726	{
		1727	if (GIMME_V != G_VOID)
		1728	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1729
		1730	if (items > 1)
		1731	{
		1732	SV *cb_cv =get_cb (callback);
		1733
1828	SvREFCNT_dec (req->callback);	1734	SvREFCNT_dec (req->callback);
1829	req->callback = newSVsv (callback);	1735	req->callback = SvREFCNT_inc (cb_cv);
		1736	}
		1737	}
1830		1738
1831	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1739	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1832		1740
1833	void	1741	void
1834	add (aio_req grp, ...)	1742	add (aio_req grp, ...)
1835	PPCODE:	1743	PPCODE:
1836	{	1744	{
1837	int i;	1745	int i;
1838	aio_req req;
1839
1840	if (main_sig && !block_sig_level)
1841	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1842		1746
1843	if (grp->int1 == 2)	1747	if (grp->int1 == 2)
1844	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1748	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1845		1749
1846	for (i = 1; i < items; ++i )	1750	for (i = 1; i < items; ++i )
1847	{	1751	{
		1752	aio_req req;
		1753
1848	if (GIMME_V != G_VOID)	1754	if (GIMME_V != G_VOID)
1849	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1755	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1850		1756
1851	req = SvAIO_REQ (ST (i));	1757	req = SvAIO_REQ (ST (i));
1852		1758
1853	if (req)	1759	if (req)
1854	{	1760	eio_grp_add (grp, req);
1855	++grp->size;
1856	req->grp = grp;
1857
1858	req->grp_prev = 0;
1859	req->grp_next = grp->grp_first;
1860
1861	if (grp->grp_first)
1862	grp->grp_first->grp_prev = req;
1863
1864	grp->grp_first = req;
1865	}
1866	}	1761	}
1867	}	1762	}
1868		1763
1869	void	1764	void
1870	cancel_subs (aio_req_ornot req)	1765	cancel_subs (aio_req_ornot req)
…		…
1879	AV *av;	1774	AV *av;
1880		1775
1881	grp->errorno = errno;	1776	grp->errorno = errno;
1882		1777
1883	av = newAV ();	1778	av = newAV ();
		1779	av_extend (av, items - 1);
1884		1780
1885	for (i = 1; i < items; ++i )	1781	for (i = 1; i < items; ++i )
1886	av_push (av, newSVsv (ST (i)));	1782	av_push (av, newSVsv (ST (i)));
1887		1783
1888	SvREFCNT_dec (grp->sv1);	1784	SvREFCNT_dec (grp->sv1);
…		…
1895	grp->errorno = errorno;	1791	grp->errorno = errorno;
1896		1792
1897	void	1793	void
1898	limit (aio_req grp, int limit)	1794	limit (aio_req grp, int limit)
1899	CODE:	1795	CODE:
1900	grp->int2 = limit;	1796	eio_grp_limit (grp, limit);
1901	aio_grp_feed (grp);
1902		1797
1903	void	1798	void
1904	feed (aio_req grp, SV *callback=&PL_sv_undef)	1799	feed (aio_req grp, SV *callback=&PL_sv_undef)
1905	CODE:	1800	CODE:
1906	{	1801	{
1907	SvREFCNT_dec (grp->sv2);	1802	SvREFCNT_dec (grp->sv2);
1908	grp->sv2 = newSVsv (callback);	1803	grp->sv2 = newSVsv (callback);
		1804	grp->feed = aio_grp_feed;
1909		1805
1910	if (grp->int2 <= 0)	1806	if (grp->int2 <= 0)
1911	grp->int2 = 2;	1807	grp->int2 = 2;
1912		1808
1913	aio_grp_feed (grp);	1809	eio_grp_limit (grp, grp->int2);
1914	}	1810	}
1915		1811

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