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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 1.190 by root, Mon Jul 18 02:02:26 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_MKDIR, 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_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	}	771	}
1300		772
1301	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
1302	aio_req req; \	775	aio_req req; \
1303	int req_pri = next_pri; \	776	int req_pri = next_pri; \
1304	next_pri = DEFAULT_PRI + PRI_BIAS; \	777	next_pri = EIO_PRI_DEFAULT; \
1305	\	778	\
1306	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
1307	croak ("callback must be undef or of reference type"); \
1308	\	780	\
1309	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
1310	if (!req) \	782	if (!req) \
1311	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
1312	\	784	\
1313	req->callback = newSVsv (callback); \	785	req->callback = SvREFCNT_inc (cb_cv); \
1314	req->pri = req_pri	786	req->pri = req_pri
1315		787
1316	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
1317	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
1318	\	792	\
1319	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
1320	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
1321		795
1322	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
1323		797
1324	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
1325		799
1326	BOOT:	800	BOOT:
1327	{	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
1328	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);
1329		922
1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->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		925
1338	create_pipe ();	926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1340	}
1341		927
		928	reinit ();
		929	}
		930
1342	void	931	void
		932	reinit ()
		933	PROTOTYPE:
		934	CODE:
		935	reinit ();
		936
		937	void
1343	max_poll_reqs (int nreqs)	938	max_poll_reqs (unsigned int nreqs)
1344	PROTOTYPE: $	939	PROTOTYPE: $
1345	CODE:	940	CODE:
1346	max_poll_reqs = nreqs;	941	eio_set_max_poll_reqs (nreqs);
1347		942
1348	void	943	void
1349	max_poll_time (double nseconds)	944	max_poll_time (double nseconds)
1350	PROTOTYPE: $	945	PROTOTYPE: $
1351	CODE:	946	CODE:
1352	max_poll_time = nseconds * AIO_TICKS;	947	eio_set_max_poll_time (nseconds);
1353		948
1354	void	949	void
1355	min_parallel (int nthreads)	950	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: $	951	PROTOTYPE: $
1365	CODE:	952	CODE:
1366	set_max_idle (nthreads);	953	eio_set_min_parallel (nthreads);
1367		954
1368	int	955	void
1369	max_outstanding (int maxreqs)	956	max_parallel (unsigned int nthreads)
1370	PROTOTYPE: $	957	PROTOTYPE: $
1371	CODE:	958	CODE:
1372	RETVAL = max_outstanding;	959	eio_set_max_parallel (nthreads);
		960
		961	void
		962	max_idle (unsigned int nthreads)
		963	PROTOTYPE: $
		964	CODE:
		965	eio_set_max_idle (nthreads);
		966
		967	void
		968	idle_timeout (unsigned int seconds)
		969	PROTOTYPE: $
		970	CODE:
		971	eio_set_idle_timeout (seconds);
		972
		973	void
		974	max_outstanding (unsigned int maxreqs)
		975	PROTOTYPE: $
		976	CODE:
1373	max_outstanding = maxreqs;	977	max_outstanding = maxreqs;
1374	OUTPUT:
1375	RETVAL
1376		978
1377	void	979	void
1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	980	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1379	SV8 * pathname
1380	int flags
1381	int mode
1382	SV * callback
1383	PROTOTYPE: $$$;$
1384	PPCODE:	981	PPCODE:
1385	{	982	{
1386	dREQ;	983	dREQ;
1387		984
1388	req->type = REQ_OPEN;	985	req->type = EIO_OPEN;
1389	req->sv1 = newSVsv (pathname);	986	req->sv1 = newSVsv (pathname);
1390	req->ptr1 = SvPVbyte_nolen (req->sv1);	987	req->ptr1 = SvPVbyte_nolen (req->sv1);
1391	req->int1 = flags;	988	req->int1 = flags;
1392	req->mode = mode;	989	req->int2 = mode;
1393		990
1394	REQ_SEND;	991	REQ_SEND;
1395	}	992	}
1396		993
1397	void	994	void
1398	aio_close (fh,callback=&PL_sv_undef)	995	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1399	SV * fh
1400	SV * callback
1401	PROTOTYPE: $;$
1402	ALIAS:	996	ALIAS:
1403	aio_close = REQ_CLOSE
1404	aio_fsync = REQ_FSYNC	997	aio_fsync = EIO_FSYNC
1405	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = EIO_FDATASYNC
1406	PPCODE:	999	PPCODE:
1407	{	1000	{
		1001	int fd = s_fileno_croak (fh, 0);
1408	dREQ;	1002	dREQ;
1409		1003
1410	req->type = ix;	1004	req->type = ix;
1411	req->fh = newSVsv (fh);	1005	req->sv1 = newSVsv (fh);
1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1006	req->int1 = fd;
1413		1007
1414	REQ_SEND (req);	1008	REQ_SEND (req);
1415	}	1009	}
1416		1010
1417	void	1011	void
		1012	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1013	PPCODE:
		1014	{
		1015	int fd = s_fileno_croak (fh, 0);
		1016	dREQ;
		1017
		1018	req->type = EIO_SYNC_FILE_RANGE;
		1019	req->sv1 = newSVsv (fh);
		1020	req->int1 = fd;
		1021	req->offs = offset;
		1022	req->size = nbytes;
		1023	req->int2 = flags;
		1024
		1025	REQ_SEND (req);
		1026	}
		1027
		1028	void
		1029	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1030	PPCODE:
		1031	{
		1032	int fd = s_fileno_croak (fh, 0);
		1033	dREQ;
		1034
		1035	req->type = EIO_FALLOCATE;
		1036	req->sv1 = newSVsv (fh);
		1037	req->int1 = fd;
		1038	req->int2 = mode;
		1039	req->offs = offset;
		1040	req->size = len;
		1041
		1042	REQ_SEND (req);
		1043	}
		1044
		1045	void
		1046	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1047	PPCODE:
		1048	{
		1049	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1050	int fd = s_fileno_croak (fh, 0);
		1051	dREQ;
		1052
		1053	if (expect_false (close_fd < 0))
		1054	{
		1055	int pipefd [2];
		1056
		1057	if (
		1058	#ifdef _WIN32
		1059	_pipe (pipefd, 1, _O_BINARY) < 0
		1060	#else
		1061	pipe (pipefd) < 0
		1062	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1063	#endif
		1064	|| close (pipefd [1]) < 0
		1065	)
		1066	abort (); /*D*/
		1067
		1068	close_fd = pipefd [0];
		1069	}
		1070
		1071	req->type = EIO_DUP2;
		1072	req->int1 = close_fd;
		1073	req->sv2 = newSVsv (fh);
		1074	req->int2 = fd;
		1075
		1076	REQ_SEND (req);
		1077	}
		1078
		1079	void
1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1080	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:	1081	ALIAS:
1426	aio_read = REQ_READ	1082	aio_read = EIO_READ
1427	aio_write = REQ_WRITE	1083	aio_write = EIO_WRITE
1428	PROTOTYPE: $$$$$;$
1429	PPCODE:	1084	PPCODE:
1430	{	1085	{
1431	STRLEN svlen;	1086	STRLEN svlen;
		1087	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1432	char *svptr = SvPVbyte (data, svlen);	1088	char *svptr = SvPVbyte (data, svlen);
1433		1089	UV len = SvUV (length);
1434	SvUPGRADE (data, SVt_PV);
1435	SvPOK_on (data);
1436		1090
1437	if (dataoffset < 0)	1091	if (dataoffset < 0)
1438	dataoffset += svlen;	1092	dataoffset += svlen;
1439		1093
1440	if (dataoffset < 0 || dataoffset > svlen)	1094	if (dataoffset < 0 || dataoffset > svlen)
1441	croak ("data offset outside of string");	1095	croak ("dataoffset outside of data scalar");
1442		1096
1443	if (ix == REQ_WRITE)	1097	if (ix == EIO_WRITE)
1444	{	1098	{
1445	/* write: check length and adjust. */	1099	/* write: check length and adjust. */
1446	if (length < 0 || length + dataoffset > svlen)	1100	if (!SvOK (length) || len + dataoffset > svlen)
1447	length = svlen - dataoffset;	1101	len = svlen - dataoffset;
1448	}	1102	}
1449	else	1103	else
1450	{	1104	{
1451	/* read: grow scalar as necessary */	1105	/* read: check type and grow scalar as necessary */
		1106	SvUPGRADE (data, SVt_PV);
1452	svptr = SvGROW (data, length + dataoffset + 1);	1107	svptr = SvGROW (data, len + dataoffset + 1);
1453	}	1108	}
1454
1455	if (length < 0)
1456	croak ("length must not be negative");
1457		1109
1458	{	1110	{
1459	dREQ;	1111	dREQ;
1460		1112
1461	req->type = ix;	1113	req->type = ix;
1462	req->fh = newSVsv (fh);	1114	req->sv1 = newSVsv (fh);
1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1115	req->int1 = fd;
1464	: IoOFP (sv_2io (fh)));	1116	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1465	req->offs = offset;
1466	req->size = length;	1117	req->size = len;
1467	req->sv1 = SvREFCNT_inc (data);	1118	req->sv2 = SvREFCNT_inc (data);
1468	req->ptr1 = (char *)svptr + dataoffset;	1119	req->ptr2 = (char *)svptr + dataoffset;
1469	req->stroffset = dataoffset;	1120	req->stroffset = dataoffset;
1470		1121
1471	if (!SvREADONLY (data))	1122	if (!SvREADONLY (data))
1472	{	1123	{
1473	SvREADONLY_on (data);	1124	SvREADONLY_on (data);
1474	req->flags |= FLAG_SV1_RO_OFF;	1125	req->flags |= FLAG_SV2_RO_OFF;
1475	}	1126	}
1476		1127
1477	REQ_SEND;	1128	REQ_SEND;
1478	}	1129	}
1479	}	1130	}
1480		1131
1481	void	1132	void
1482	aio_readlink (path,callback=&PL_sv_undef)	1133	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1483	SV8 * path	1134	ALIAS:
1484	SV * callback	1135	aio_readlink = EIO_READLINK
1485	PROTOTYPE: $$;$	1136	aio_realpath = EIO_REALPATH
1486	PPCODE:	1137	PPCODE:
1487	{	1138	{
1488	SV *data;
1489	dREQ;	1139	dREQ;
1490		1140
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	1141	req->type = ix;
1495	req->fh = newSVsv (path);	1142	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->fh);	1143	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->sv1 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		1144
1500	REQ_SEND;	1145	REQ_SEND;
1501	}	1146	}
1502		1147
1503	void	1148	void
1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1149	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: $$$$;$
1511	PPCODE:	1150	PPCODE:
1512	{	1151	{
		1152	int ifd = s_fileno_croak (in_fh , 0);
		1153	int ofd = s_fileno_croak (out_fh, 1);
1513	dREQ;	1154	dREQ;
1514		1155
1515	req->type = REQ_SENDFILE;	1156	req->type = EIO_SENDFILE;
1516	req->fh = newSVsv (out_fh);	1157	req->sv1 = newSVsv (out_fh);
1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1158	req->int1 = ofd;
1518	req->sv2 = newSVsv (in_fh);	1159	req->sv2 = newSVsv (in_fh);
1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1160	req->int2 = ifd;
1520	req->offs = in_offset;	1161	req->offs = in_offset;
1521	req->size = length;	1162	req->size = length;
1522		1163
1523	REQ_SEND;	1164	REQ_SEND;
1524	}	1165	}
1525		1166
1526	void	1167	void
1527	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1168	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1528	SV * fh
1529	UV offset
1530	IV length
1531	SV * callback
1532	PROTOTYPE: $$$;$
1533	PPCODE:	1169	PPCODE:
1534	{	1170	{
		1171	int fd = s_fileno_croak (fh, 0);
1535	dREQ;	1172	dREQ;
1536		1173
1537	req->type = REQ_READAHEAD;	1174	req->type = EIO_READAHEAD;
1538	req->fh = newSVsv (fh);	1175	req->sv1 = newSVsv (fh);
1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1176	req->int1 = fd;
1540	req->offs = offset;	1177	req->offs = offset;
1541	req->size = length;	1178	req->size = length;
1542		1179
1543	REQ_SEND;	1180	REQ_SEND;
1544	}	1181	}
1545		1182
1546	void	1183	void
1547	aio_stat (fh_or_path,callback=&PL_sv_undef)	1184	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1548	SV8 * fh_or_path
1549	SV * callback
1550	ALIAS:	1185	ALIAS:
1551	aio_stat = REQ_STAT	1186	aio_stat = EIO_STAT
1552	aio_lstat = REQ_LSTAT	1187	aio_lstat = EIO_LSTAT
		1188	aio_statvfs = EIO_STATVFS
1553	PPCODE:	1189	PPCODE:
1554	{	1190	{
1555	dREQ;	1191	dREQ;
1556		1192
1557	req->ptr2 = malloc (sizeof (Stat_t));	1193	req->sv1 = newSVsv (fh_or_path);
1558	if (!req->ptr2)
1559	{
1560	req_free (req);
1561	croak ("out of memory during aio_stat statdata allocation");
1562	}
1563		1194
1564	req->flags |= FLAG_PTR2_FREE;	1195	if (SvPOK (req->sv1))
1565
1566	if (SvPOK (fh_or_path))
1567	{	1196	{
1568	req->type = ix;	1197	req->type = ix;
1569	req->sv1 = newSVsv (fh_or_path);
1570	req->ptr1 = SvPVbyte_nolen (req->sv1);	1198	req->ptr1 = SvPVbyte_nolen (req->sv1);
1571	}	1199	}
1572	else	1200	else
1573	{	1201	{
1574	req->type = REQ_FSTAT;	1202	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1575	req->fh = newSVsv (fh_or_path);
1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1203	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1577	}	1204	}
1578		1205
1579	REQ_SEND;	1206	REQ_SEND;
1580	}	1207	}
1581		1208
		1209	UV
		1210	major (UV dev)
		1211	ALIAS:
		1212	minor = 1
		1213	CODE:
		1214	RETVAL = ix ? major (dev) : minor (dev);
		1215	OUTPUT:
		1216	RETVAL
		1217
		1218	UV
		1219	makedev (UV maj, UV min)
		1220	CODE:
		1221	RETVAL = makedev (maj, min);
		1222	OUTPUT:
		1223	RETVAL
		1224
1582	void	1225	void
		1226	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1227	PPCODE:
		1228	{
		1229	dREQ;
		1230
		1231	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1232	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1233	req->sv1 = newSVsv (fh_or_path);
		1234
		1235	if (SvPOK (req->sv1))
		1236	{
		1237	req->type = EIO_UTIME;
		1238	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1239	}
		1240	else
		1241	{
		1242	req->type = EIO_FUTIME;
		1243	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1244	}
		1245
		1246	REQ_SEND;
		1247	}
		1248
		1249	void
		1250	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1251	PPCODE:
		1252	{
		1253	dREQ;
		1254
		1255	req->sv1 = newSVsv (fh_or_path);
		1256	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1257
		1258	if (SvPOK (req->sv1))
		1259	{
		1260	req->type = EIO_TRUNCATE;
		1261	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1262	}
		1263	else
		1264	{
		1265	req->type = EIO_FTRUNCATE;
		1266	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1267	}
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
		1273	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1274	ALIAS:
		1275	aio_chmod = EIO_CHMOD
		1276	aio_mkdir = EIO_MKDIR
		1277	PPCODE:
		1278	{
		1279	dREQ;
		1280
		1281	req->int2 = mode;
		1282	req->sv1 = newSVsv (fh_or_path);
		1283
		1284	if (SvPOK (req->sv1))
		1285	{
		1286	req->type = ix;
		1287	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1288	}
		1289	else
		1290	{
		1291	req->type = EIO_FCHMOD;
		1292	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1293	}
		1294
		1295	REQ_SEND;
		1296	}
		1297
		1298	void
		1299	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1300	PPCODE:
		1301	{
		1302	dREQ;
		1303
		1304	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1305	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1306	req->sv1 = newSVsv (fh_or_path);
		1307
		1308	if (SvPOK (req->sv1))
		1309	{
		1310	req->type = EIO_CHOWN;
		1311	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1312	}
		1313	else
		1314	{
		1315	req->type = EIO_FCHOWN;
		1316	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1317	}
		1318
		1319	REQ_SEND;
		1320	}
		1321
		1322	void
		1323	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->type = EIO_READDIR;
		1329	req->sv1 = newSVsv (pathname);
		1330	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1331	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1332
		1333	if (flags & EIO_READDIR_DENTS)
		1334	req->int1 |= EIO_READDIR_CUSTOM2;
		1335
		1336	REQ_SEND;
		1337	}
		1338
		1339	void
1583	aio_unlink (pathname,callback=&PL_sv_undef)	1340	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	SV * callback
1586	ALIAS:	1341	ALIAS:
1587	aio_unlink = REQ_UNLINK	1342	aio_unlink = EIO_UNLINK
1588	aio_rmdir = REQ_RMDIR	1343	aio_rmdir = EIO_RMDIR
1589	aio_readdir = REQ_READDIR	1344	aio_readdir = EIO_READDIR
1590	PPCODE:	1345	PPCODE:
1591	{	1346	{
1592	dREQ;	1347	dREQ;
1593		1348
1594	req->type = ix;	1349	req->type = ix;
…		…
1597		1352
1598	REQ_SEND;	1353	REQ_SEND;
1599	}	1354	}
1600		1355
1601	void	1356	void
1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
1603	SV8 * pathname
1604	UV mode
1605	SV * callback
1606	PPCODE:
1607	{
1608	dREQ;
1609
1610	req->type = REQ_MKDIR;
1611	req->sv1 = newSVsv (pathname);
1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
1613	req->mode = mode;
1614
1615	REQ_SEND;
1616	}
1617
1618	void
1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1357	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1620	SV8 * oldpath
1621	SV8 * newpath
1622	SV * callback
1623	ALIAS:	1358	ALIAS:
1624	aio_link = REQ_LINK	1359	aio_link = EIO_LINK
1625	aio_symlink = REQ_SYMLINK	1360	aio_symlink = EIO_SYMLINK
1626	aio_rename = REQ_RENAME	1361	aio_rename = EIO_RENAME
1627	PPCODE:	1362	PPCODE:
1628	{	1363	{
1629	dREQ;	1364	dREQ;
1630		1365
1631	req->type = ix;	1366	req->type = ix;
1632	req->fh = newSVsv (oldpath);	1367	req->sv1 = newSVsv (oldpath);
1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1634	req->sv1 = newSVsv (newpath);
1635	req->ptr1 = SvPVbyte_nolen (req->sv1);	1368	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1369	req->sv2 = newSVsv (newpath);
		1370	req->ptr2 = SvPVbyte_nolen (req->sv2);
1636		1371
1637	REQ_SEND;	1372	REQ_SEND;
1638	}	1373	}
1639		1374
1640	void	1375	void
1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1376	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1642	SV8 * pathname
1643	UV mode
1644	UV dev
1645	SV * callback
1646	PPCODE:	1377	PPCODE:
1647	{	1378	{
1648	dREQ;	1379	dREQ;
1649		1380
1650	req->type = REQ_MKNOD;	1381	req->type = EIO_MKNOD;
1651	req->sv1 = newSVsv (pathname);	1382	req->sv1 = newSVsv (pathname);
1652	req->ptr1 = SvPVbyte_nolen (req->sv1);	1383	req->ptr1 = SvPVbyte_nolen (req->sv1);
1653	req->mode = (mode_t)mode;	1384	req->int2 = (mode_t)mode;
1654	req->offs = dev;	1385	req->offs = dev;
1655		1386
1656	REQ_SEND;	1387	REQ_SEND;
1657	}	1388	}
1658		1389
1659	void	1390	void
		1391	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1392	ALIAS:
		1393	aio_mtouch = EIO_MTOUCH
		1394	aio_msync = EIO_MSYNC
		1395	PPCODE:
		1396	{
		1397	STRLEN svlen;
		1398	char *svptr = SvPVbyte (data, svlen);
		1399	UV len = SvUV (length);
		1400
		1401	if (offset < 0)
		1402	offset += svlen;
		1403
		1404	if (offset < 0 || offset > svlen)
		1405	croak ("offset outside of scalar");
		1406
		1407	if (!SvOK (length) || len + offset > svlen)
		1408	len = svlen - offset;
		1409
		1410	{
		1411	dREQ;
		1412
		1413	req->type = ix;
		1414	req->sv2 = SvREFCNT_inc (data);
		1415	req->ptr2 = (char *)svptr + offset;
		1416	req->size = len;
		1417	req->int1 = flags;
		1418
		1419	REQ_SEND;
		1420	}
		1421	}
		1422
		1423	void
		1424	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1425	PPCODE:
		1426	{
		1427	STRLEN svlen;
		1428	char *svptr = SvPVbyte (data, svlen);
		1429	UV len = SvUV (length);
		1430
		1431	if (offset < 0)
		1432	offset += svlen;
		1433
		1434	if (offset < 0 || offset > svlen)
		1435	croak ("offset outside of scalar");
		1436
		1437	if (!SvOK (length) || len + offset > svlen)
		1438	len = svlen - offset;
		1439
		1440	{
		1441	dREQ;
		1442
		1443	req->type = EIO_MLOCK;
		1444	req->sv2 = SvREFCNT_inc (data);
		1445	req->ptr2 = (char *)svptr + offset;
		1446	req->size = len;
		1447
		1448	REQ_SEND;
		1449	}
		1450	}
		1451
		1452	void
		1453	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1454	PPCODE:
		1455	{
		1456	dREQ;
		1457
		1458	req->type = EIO_MLOCKALL;
		1459	req->int1 = flags;
		1460
		1461	REQ_SEND;
		1462	}
		1463
		1464	void
1660	aio_busy (delay,callback=&PL_sv_undef)	1465	aio_busy (double delay, SV *callback=&PL_sv_undef)
1661	double delay
1662	SV * callback
1663	PPCODE:	1466	PPCODE:
1664	{	1467	{
1665	dREQ;	1468	dREQ;
1666		1469
1667	req->type = REQ_BUSY;	1470	req->type = EIO_BUSY;
1668	req->int1 = delay < 0. ? 0 : delay;	1471	req->nv1 = delay < 0. ? 0. : delay;
1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1670		1472
1671	REQ_SEND;	1473	REQ_SEND;
1672	}	1474	}
1673		1475
1674	void	1476	void
1675	aio_group (callback=&PL_sv_undef)	1477	aio_group (SV *callback=&PL_sv_undef)
1676	SV * callback
1677	PROTOTYPE: ;$
1678	PPCODE:	1478	PPCODE:
1679	{	1479	{
1680	dREQ;	1480	dREQ;
1681		1481
1682	req->type = REQ_GROUP;	1482	req->type = EIO_GROUP;
1683		1483
1684	req_send (req);	1484	req_submit (req);
1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1485	XPUSHs (req_sv (req, aio_grp_stash));
1686	}	1486	}
1687		1487
1688	void	1488	void
1689	aio_nop (callback=&PL_sv_undef)	1489	aio_nop (SV *callback=&PL_sv_undef)
1690	SV * callback	1490	ALIAS:
		1491	aio_nop = EIO_NOP
		1492	aio_sync = EIO_SYNC
1691	PPCODE:	1493	PPCODE:
1692	{	1494	{
1693	dREQ;	1495	dREQ;
1694		1496
1695	req->type = REQ_NOP;	1497	req->type = ix;
1696		1498
1697	REQ_SEND;	1499	REQ_SEND;
1698	}	1500	}
1699		1501
1700	int	1502	int
1701	aioreq_pri (int pri = 0)	1503	aioreq_pri (int pri = 0)
1702	PROTOTYPE: ;$
1703	CODE:	1504	CODE:
1704	RETVAL = next_pri - PRI_BIAS;	1505	RETVAL = next_pri;
1705	if (items > 0)	1506	if (items > 0)
1706	{	1507	{
1707	if (pri < PRI_MIN) pri = PRI_MIN;	1508	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1708	if (pri > PRI_MAX) pri = PRI_MAX;	1509	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1709	next_pri = pri + PRI_BIAS;	1510	next_pri = pri;
1710	}	1511	}
1711	OUTPUT:	1512	OUTPUT:
1712	RETVAL	1513	RETVAL
1713		1514
1714	void	1515	void
1715	aioreq_nice (int nice = 0)	1516	aioreq_nice (int nice = 0)
1716	CODE:	1517	CODE:
1717	nice = next_pri - nice;	1518	nice = next_pri - nice;
1718	if (nice < PRI_MIN) nice = PRI_MIN;	1519	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1719	if (nice > PRI_MAX) nice = PRI_MAX;	1520	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1720	next_pri = nice + PRI_BIAS;	1521	next_pri = nice;
1721		1522
1722	void	1523	void
1723	flush ()	1524	flush ()
1724	PROTOTYPE:
1725	CODE:	1525	CODE:
1726	while (nreqs)	1526	while (eio_nreqs ())
1727	{	1527	{
1728	poll_wait ();	1528	poll_wait ();
1729	poll_cb ();	1529	poll_cb ();
1730	}	1530	}
1731		1531
1732	int	1532	int
1733	poll()	1533	poll ()
1734	PROTOTYPE:
1735	CODE:	1534	CODE:
1736	poll_wait ();	1535	poll_wait ();
1737	RETVAL = poll_cb ();	1536	RETVAL = poll_cb ();
1738	OUTPUT:	1537	OUTPUT:
1739	RETVAL	1538	RETVAL
1740		1539
1741	int	1540	int
1742	poll_fileno()	1541	poll_fileno ()
1743	PROTOTYPE:
1744	CODE:	1542	CODE:
1745	RETVAL = respipe [0];	1543	RETVAL = s_epipe_fd (&respipe);
1746	OUTPUT:	1544	OUTPUT:
1747	RETVAL	1545	RETVAL
1748		1546
1749	int	1547	int
1750	poll_cb(...)	1548	poll_cb (...)
1751	PROTOTYPE:	1549	PROTOTYPE:
1752	CODE:	1550	CODE:
1753	RETVAL = poll_cb ();	1551	RETVAL = poll_cb ();
1754	OUTPUT:	1552	OUTPUT:
1755	RETVAL	1553	RETVAL
1756		1554
1757	void	1555	void
1758	poll_wait()	1556	poll_wait ()
1759	PROTOTYPE:
1760	CODE:	1557	CODE:
1761	poll_wait ();	1558	poll_wait ();
1762		1559
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	1560	int
1801	nreqs()	1561	nreqs ()
1802	PROTOTYPE:
1803	CODE:	1562	CODE:
1804	RETVAL = nreqs;	1563	RETVAL = eio_nreqs ();
1805	OUTPUT:	1564	OUTPUT:
1806	RETVAL	1565	RETVAL
1807		1566
1808	int	1567	int
1809	nready()	1568	nready ()
1810	PROTOTYPE:
1811	CODE:	1569	CODE:
1812	RETVAL = get_nready ();	1570	RETVAL = eio_nready ();
1813	OUTPUT:	1571	OUTPUT:
1814	RETVAL	1572	RETVAL
1815		1573
1816	int	1574	int
1817	npending()	1575	npending ()
1818	PROTOTYPE:
1819	CODE:	1576	CODE:
1820	RETVAL = get_npending ();	1577	RETVAL = eio_npending ();
1821	OUTPUT:	1578	OUTPUT:
1822	RETVAL	1579	RETVAL
1823		1580
1824	int	1581	int
1825	nthreads()	1582	nthreads ()
1826	PROTOTYPE:
1827	CODE:	1583	CODE:
1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1584	RETVAL = eio_nthreads ();
1829	RETVAL = started;
1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1831	OUTPUT:	1585	OUTPUT:
1832	RETVAL	1586	RETVAL
1833		1587
		1588	int
		1589	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1590	CODE:
		1591	RETVAL = posix_fadvise (fh, offset, length, advice);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595	ssize_t
		1596	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1597	CODE:
		1598	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	void
		1603	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1604	PPCODE:
		1605	sv_unmagic (scalar, MMAP_MAGIC);
		1606	{
		1607	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1608	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1609	if (addr == (void *)-1)
		1610	XSRETURN_NO;
		1611
		1612	sv_force_normal (scalar);
		1613
		1614	/* we store the length in mg_obj, as namlen is I32 :/ */
		1615	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1616	->mg_obj = (SV *)length;
		1617
		1618	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1619
		1620	if (!(prot & PROT_WRITE))
		1621	SvREADONLY_on (scalar);
		1622
		1623	if (SvLEN (scalar))
		1624	Safefree (SvPVX (scalar));
		1625
		1626	SvPVX (scalar) = (char *)addr;
		1627	SvCUR_set (scalar, length);
		1628	SvLEN_set (scalar, 0);
		1629	SvPOK_only (scalar);
		1630
		1631	XSRETURN_YES;
		1632	}
		1633
		1634	void
		1635	munmap (SV *scalar)
		1636	CODE:
		1637	sv_unmagic (scalar, MMAP_MAGIC);
		1638
		1639	int
		1640	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1641	ALIAS:
		1642	mprotect = 1
		1643	CODE:
		1644	{
		1645	STRLEN svlen;
		1646	void *addr = SvPVbyte (scalar, svlen);
		1647	size_t len = SvUV (length);
		1648
		1649	if (offset < 0)
		1650	offset += svlen;
		1651
		1652	if (offset < 0 || offset > svlen)
		1653	croak ("offset outside of scalar");
		1654
		1655	if (!SvOK (length) || len + offset > svlen)
		1656	len = svlen - offset;
		1657
		1658	addr = (void *)(((intptr_t)addr) + offset);
		1659	eio_page_align (&addr, &len);
		1660
		1661	switch (ix)
		1662	{
		1663	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1664	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1665	}
		1666	}
		1667	OUTPUT:
		1668	RETVAL
		1669
		1670	int
		1671	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1672	CODE:
		1673	{
		1674	STRLEN svlen;
		1675	void *addr = SvPVbyte (scalar, svlen);
		1676	size_t len = SvUV (length);
		1677
		1678	if (offset < 0)
		1679	offset += svlen;
		1680
		1681	if (offset < 0 || offset > svlen)
		1682	croak ("offset outside of scalar");
		1683
		1684	if (!SvOK (length) || len + offset > svlen)
		1685	len = svlen - offset;
		1686
		1687	addr = (void *)(((intptr_t)addr) + offset);
		1688	eio_page_align (&addr, &len);
		1689	#if _POSIX_MEMLOCK_RANGE
		1690	RETVAL = munlock (addr, len);
		1691	#else
		1692	RETVAL = ((errno = ENOSYS), -1);
		1693	#endif
		1694	}
		1695	OUTPUT:
		1696	RETVAL
		1697
		1698	int
		1699	munlockall ()
		1700	CODE:
		1701	#if _POSIX_MEMLOCK
		1702	munlockall ();
		1703	#else
		1704	RETVAL = -1;
		1705	errno = ENOSYS;
		1706	#endif
		1707	OUTPUT:
		1708	RETVAL
		1709
		1710	void _on_next_submit (SV *cb)
		1711	CODE:
		1712	SvREFCNT_dec (on_next_submit);
		1713	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1714
1834	PROTOTYPES: DISABLE	1715	PROTOTYPES: DISABLE
1835		1716
1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1717	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1837		1718
1838	void	1719	void
1839	cancel (aio_req_ornot req)	1720	cancel (aio_req_ornot req)
1840	CODE:	1721	CODE:
1841	req_cancel (req);	1722	eio_cancel (req);
1842		1723
1843	void	1724	void
1844	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1725	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1845	CODE:	1726	PPCODE:
		1727	{
		1728	if (GIMME_V != G_VOID)
		1729	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1730
		1731	if (items > 1)
		1732	{
		1733	SV *cb_cv =get_cb (callback);
		1734
1846	SvREFCNT_dec (req->callback);	1735	SvREFCNT_dec (req->callback);
1847	req->callback = newSVsv (callback);	1736	req->callback = SvREFCNT_inc (cb_cv);
		1737	}
		1738	}
1848		1739
1849	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1740	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1850		1741
1851	void	1742	void
1852	add (aio_req grp, ...)	1743	add (aio_req grp, ...)
1853	PPCODE:	1744	PPCODE:
1854	{	1745	{
1855	int i;	1746	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		1747
1861	if (grp->int1 == 2)	1748	if (grp->int1 == 2)
1862	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1749	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1863		1750
1864	for (i = 1; i < items; ++i )	1751	for (i = 1; i < items; ++i )
1865	{	1752	{
		1753	aio_req req;
		1754
1866	if (GIMME_V != G_VOID)	1755	if (GIMME_V != G_VOID)
1867	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1756	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1868		1757
1869	req = SvAIO_REQ (ST (i));	1758	req = SvAIO_REQ (ST (i));
1870		1759
1871	if (req)	1760	if (req)
1872	{	1761	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	}	1762	}
1885	}	1763	}
1886		1764
1887	void	1765	void
1888	cancel_subs (aio_req_ornot req)	1766	cancel_subs (aio_req_ornot req)
…		…
1897	AV *av;	1775	AV *av;
1898		1776
1899	grp->errorno = errno;	1777	grp->errorno = errno;
1900		1778
1901	av = newAV ();	1779	av = newAV ();
		1780	av_extend (av, items - 1);
1902		1781
1903	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
1904	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
1905		1784
1906	SvREFCNT_dec (grp->sv1);	1785	SvREFCNT_dec (grp->sv1);
…		…
1913	grp->errorno = errorno;	1792	grp->errorno = errorno;
1914		1793
1915	void	1794	void
1916	limit (aio_req grp, int limit)	1795	limit (aio_req grp, int limit)
1917	CODE:	1796	CODE:
1918	grp->int2 = limit;	1797	eio_grp_limit (grp, limit);
1919	aio_grp_feed (grp);
1920		1798
1921	void	1799	void
1922	feed (aio_req grp, SV *callback=&PL_sv_undef)	1800	feed (aio_req grp, SV *callback=&PL_sv_undef)
1923	CODE:	1801	CODE:
1924	{	1802	{
1925	SvREFCNT_dec (grp->sv2);	1803	SvREFCNT_dec (grp->sv2);
1926	grp->sv2 = newSVsv (callback);	1804	grp->sv2 = newSVsv (callback);
		1805	grp->feed = aio_grp_feed;
1927		1806
1928	if (grp->int2 <= 0)	1807	if (grp->int2 <= 0)
1929	grp->int2 = 2;	1808	grp->int2 = 2;
1930		1809
1931	aio_grp_feed (grp);	1810	eio_grp_limit (grp, grp->int2);
1932	}	1811	}
1933		1812

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