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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.100 by root, Fri Jun 1 06:00:40 2007 UTC vs.
Revision 1.171 by root, Wed Aug 4 17:16:19 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
		68	# include <sys/time.h>
		69	# include <sys/select.h>
		70	# include <unistd.h>
23	#include <utime.h>	71	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	72	# include <signal.h>
31	# elif __hpux	73	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	74
33	# elif __solaris /* not yet */	75	#endif
34	# include <sys/sendfile.h>	76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if _XOPEN_SOURCE < 600 || NO_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef PROT_NONE
		171	# define PROT_NONE 0
		172	#endif
		173	#ifndef PROT_READ
		174	# define PROT_READ 0
		175	#endif
		176	#ifndef PROT_WRITE
		177	# define PROT_READ 0
		178	#endif
		179	#ifndef PROT_EXEC
		180	# define PROT_EXEC 0
		181	#endif
		182
		183	#ifndef ST_NODEV
		184	# define ST_NODEV 0
		185	#endif
		186	#ifndef ST_NOEXEC
		187	# define ST_NOEXEC 0
		188	#endif
		189	#ifndef ST_SYNCHRONOUS
		190	# define ST_SYNCHRONOUS 0
		191	#endif
		192	#ifndef ST_MANDLOCK
		193	# define ST_MANDLOCK 0
		194	#endif
		195	#ifndef ST_WRITE
		196	# define ST_WRITE 0
		197	#endif
		198	#ifndef ST_APPEND
		199	# define ST_APPEND 0
		200	#endif
		201	#ifndef ST_IMMUTABLE
		202	# define ST_IMMUTABLE 0
		203	#endif
		204	#ifndef ST_NOATIME
		205	# define ST_NOATIME 0
		206	#endif
		207	#ifndef ST_NODIRATIME
		208	# define ST_NODIRATIME 0
		209	#endif
		210	#ifndef ST_RELATIME
		211	# define ST_RELATIME 0
		212	#endif
		213
		214	#ifndef MCL_CURRENT
		215	# define MCL_CURRENT 0
		216	#endif
		217	#ifndef MCL_FUTURE
		218	# define MCL_FUTURE 0
		219	#endif
		220
		221	#ifndef MAP_ANONYMOUS
		222	# ifdef MAP_ANON
		223	# define MAP_ANONYMOUS MAP_ANON
35	# else	224	# else
36	# error sendfile support requested but not available	225	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	226	# endif
38	#endif	227	#endif
39		228	#ifndef MAP_HUGETLB
40	/* number of seconds after which idle threads exit */	229	# define MAP_HUGETLB 0
41	#define IDLE_TIMEOUT 10
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif	230	#endif
		231	#ifndef MAP_LOCKED
		232	# define MAP_LOCKED 0
		233	#endif
		234	#ifndef MAP_NORESERVE
		235	# define MAP_NORESERVE 0
		236	#endif
		237	#ifndef MAP_POPULATE
		238	# define MAP_POPULATE 0
		239	#endif
		240	#ifndef MAP_NONBLOCK
		241	# define MAP_NONBLOCK 0
		242	#endif
47		243
48	/* buffer size for various temporary buffers */	244	#ifndef PAGESIZE
49	#define AIO_BUFSIZE 65536	245	# define PAGESIZE sysconf (_SC_PAGESIZE)
		246	#endif
50		247
51	#define dBUF \	248	static int req_invoke (eio_req *req);
52	char *aio_buf; \	249	#define EIO_FINISH(req) req_invoke (req)
53	LOCK (wrklock); \	250	static void req_destroy (eio_req *grp);
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	251	#define EIO_DESTROY(req) req_destroy (req)
55	UNLOCK (wrklock); \
56	if (!aio_buf) \
57	return -1;
58
59	typedef SV SV8; /* byte-sv, used for argument-checking */
60		252
61	enum {	253	enum {
62	REQ_QUIT,	254	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	255	};
77		256
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	257	#include "libeio/eio.c"
79	#define AIO_GRP_KLASS "IO::AIO::GRP"
80		258
81	typedef struct aio_cb
82	{
83	struct aio_cb *volatile next;
84
85	SV *callback;
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92
93	STRLEN stroffset;
94	int type;
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98
99	unsigned char flags;
100	unsigned char pri;
101
102	SV *self; /* the perl counterpart of this request, if any */
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
104	} aio_cb;
105
106	enum {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */
108	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};
111
112	typedef aio_cb *aio_req;	259	typedef eio_req *aio_req;
113	typedef aio_cb *aio_req_ornot;	260	typedef eio_req *aio_req_ornot;
114		261
115	enum {	262	static SV *on_next_submit;
116	PRI_MIN = -4,	263	static int next_pri = EIO_PRI_DEFAULT;
117	PRI_MAX = 4,	264	static int max_outstanding;
118		265
119	DEFAULT_PRI = 0,	266	static s_epipe respipe;
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123		267
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135
136	static thread_t main_tid;
137	static int main_sig;
138	static int block_sig_level;
139
140	void block_sig ()
141	{
142	sigset_t ss;
143
144	if (block_sig_level++)
145	return;
146
147	if (!main_sig)
148	return;
149
150	sigemptyset (&ss);
151	sigaddset (&ss, main_sig);
152	pthread_sigmask (SIG_BLOCK, &ss, 0);
153	}
154
155	void unblock_sig ()
156	{
157	sigset_t ss;
158
159	if (--block_sig_level)
160	return;
161
162	if (!main_sig)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{
195	closedir (wrk->dirp);
196	wrk->dirp = 0;
197	}
198
199	if (wrk->dbuf)
200	{
201	free (wrk->dbuf);
202	wrk->dbuf = 0;
203	}
204	}
205
206	static void worker_free (worker *wrk)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;
301
302	--q->size;
303
304	for (pri = NUM_PRI; pri--; )
305	{
306	aio_req req = q->qs[pri];
307
308	if (req)
309	{
310	if (!(q->qs[pri] = req->next))
311	q->qe[pri] = 0;
312
313	return req;
314	}
315	}
316
317	abort ();
318	}
319
320	static int poll_cb ();
321	static int req_invoke (aio_req req);
322	static void req_free (aio_req req);	268	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	269	static void req_cancel (aio_req req);
324		270
		271	static void want_poll (void)
		272	{
		273	/* write a dummy byte to the pipe so fh becomes ready */
		274	s_epipe_signal (&respipe);
		275	}
		276
		277	static void done_poll (void)
		278	{
		279	/* read any signals sent by the worker threads */
		280	s_epipe_drain (&respipe);
		281	}
		282
325	/* must be called at most once */	283	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	284	static SV *req_sv (aio_req req, HV *stash)
327	{	285	{
328	if (!req->self)	286	if (!req->self)
329	{	287	{
330	req->self = (SV *)newHV ();	288	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	289	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	290	}
333		291
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	292	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	293	}
336		294
337	static aio_req SvAIO_REQ (SV *sv)	295	static aio_req SvAIO_REQ (SV *sv)
338	{	296	{
339	MAGIC *mg;	297	MAGIC *mg;
340		298
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	299	if (!SvROK (sv)
		300	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		301	&& SvSTASH (SvRV (sv)) != aio_req_stash
		302	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	303	croak ("object of class IO::AIO::REQ expected");
343		304
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	305	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		306
346	return mg ? (aio_req)mg->mg_ptr : 0;	307	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	308	}
348		309
349	static void aio_grp_feed (aio_req grp)	310	static void aio_grp_feed (aio_req grp)
350	{	311	{
351	block_sig ();	312	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	313	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	314	dSP;
360		315
361	ENTER;	316	ENTER;
362	SAVETMPS;	317	SAVETMPS;
363	PUSHMARK (SP);	318	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	319	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	320	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	321	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	322	SPAGAIN;
368	FREETMPS;	323	FREETMPS;
369	LEAVE;	324	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	325	}
380
381	unblock_sig ();
382	}	326	}
383		327
384	static void aio_grp_dec (aio_req grp)	328	static void req_submit (eio_req *req)
385	{	329	{
386	--grp->size;	330	eio_submit (req);
387		331
388	/* call feeder, if applicable */	332	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	333	{
394	block_sig ();	334	dSP;
		335	SV *cb = sv_2mortal (on_next_submit);
395		336
396	if (!req_invoke (grp))	337	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		338
403	req_free (grp);	339	PUSHMARK (SP);
404	unblock_sig ();	340	PUTBACK;
		341	call_sv (cb, G_DISCARD | G_EVAL);
405	}	342	}
406	}	343	}
407		344
408	static int req_invoke (aio_req req)	345	static int req_invoke (eio_req *req)
409	{	346	{
410	dSP;
411
412	if (req->flags & FLAG_SV2_RO_OFF)	347	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv2);	348	SvREADONLY_off (req->sv2);
414		349
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	350	if (!EIO_CANCELLED (req) && req->callback)
416	{	351	{
		352	dSP;
		353	static SV *sv_result_cache; /* caches the result integer SV */
		354	SV *sv_result;
		355
417	ENTER;	356	ENTER;
418	SAVETMPS;	357	SAVETMPS;
419	PUSHMARK (SP);	358	PUSHMARK (SP);
420	EXTEND (SP, 1);	359	EXTEND (SP, 1);
421		360
		361	/* do not recreate the result IV from scratch each time */
		362	if (expect_true (sv_result_cache))
		363	{
		364	sv_result = sv_result_cache; sv_result_cache = 0;
		365	SvIV_set (sv_result, req->result);
		366	}
		367	else
		368	{
		369	sv_result = newSViv (req->result);
		370	SvREADONLY_on (sv_result);
		371	}
		372
422	switch (req->type)	373	switch (req->type)
423	{	374	{
424	case REQ_READDIR:	375	case EIO_READDIR:
425	{	376	{
426	SV *rv = &PL_sv_undef;	377	SV *rv = &PL_sv_undef;
427		378
428	if (req->result >= 0)	379	if (req->result >= 0)
429	{	380	{
430	int i;	381	int i;
431	char *buf = req->ptr2;	382	char *names = (char *)req->ptr2;
		383	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	384	AV *av = newAV ();
433		385
434	av_extend (av, req->result - 1);	386	av_extend (av, req->result - 1);
435		387
436	for (i = 0; i < req->result; ++i)	388	for (i = 0; i < req->result; ++i)
437	{	389	{
438	SV *sv = newSVpv (buf, 0);	390	if (req->int1 & EIO_READDIR_DENTS)
		391	{
		392	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		393
		394	if (req->int1 & EIO_READDIR_CUSTOM2)
		395	{
		396	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		397	AV *avent = newAV ();
		398
		399	av_extend (avent, 2);
		400
		401	if (!sv_type [ent->type])
		402	{
		403	sv_type [ent->type] = newSViv (ent->type);
		404	SvREADONLY_on (sv_type [ent->type]);
		405	}
		406
		407	av_store (avent, 0, namesv);
		408	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		409	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		410
		411	av_store (av, i, newRV_noinc ((SV *)avent));
		412	}
		413	else
440	av_store (av, i, sv);	414	av_store (av, i, namesv);
		415
		416	++ent;
		417	}
		418	else
		419	{
		420	SV *name = newSVpv (names, 0);
		421	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	422	names += SvCUR (name) + 1;
		423	}
442	}	424	}
443		425
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	426	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	427	}
446		428
447	PUSHs (rv);	429	PUSHs (rv);
		430
		431	if (req->int1 & EIO_READDIR_CUSTOM1)
		432	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	433	}
449	break;	434	break;
450		435
451	case REQ_OPEN:	436	case EIO_OPEN:
452	{	437	{
453	/* convert fd to fh */	438	/* convert fd to fh */
454	SV *fh;	439	SV *fh = &PL_sv_undef;
455		440
456	PUSHs (sv_2mortal (newSViv (req->result)));	441	if (req->result >= 0)
457	PUTBACK;	442	{
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	443	GV *gv = (GV *)sv_newmortal ();
459	SPAGAIN;	444	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		445	char sym [64];
		446	int symlen;
		447
		448	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		449	gv_init (gv, aio_stash, sym, symlen, 0);
460		450
461	fh = POPs;	451	symlen = snprintf (
462	PUSHMARK (SP);	452	sym,
		453	sizeof (sym),
		454	"%s&=%d",
		455	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		456	(int)req->result
		457	);
		458
		459	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		460	fh = (SV *)gv;
		461	}
		462
463	XPUSHs (fh);	463	PUSHs (fh);
464	}	464	}
465	break;	465	break;
466		466
		467	case EIO_STATVFS:
		468	case EIO_FSTATVFS:
		469	{
		470	SV *rv = &PL_sv_undef;
		471
		472	if (req->result >= 0)
		473	{
		474	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		475	HV *hv = newHV ();
		476
		477	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		478
		479	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		480	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		481	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		482	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		483	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		484	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		485	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		486	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		487	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		488	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		489	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		490	}
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
467	case REQ_GROUP:	497	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
469		499
470	if (req->sv1)	500	if (req->sv1)
471	{	501	{
472	int i;	502	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
478	}	508	}
479	break;	509	break;
480		510
481	case REQ_NOP:	511	case EIO_NOP:
482	case REQ_BUSY:	512	case EIO_BUSY:
483	break;	513	break;
484		514
485	case REQ_READLINK:	515	case EIO_READLINK:
486	if (req->result > 0)	516	if (req->result > 0)
487	{	517	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
488	SvCUR_set (req->sv2, req->result);
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);
491	}
492	break;	518	break;
493		519
494	case REQ_STAT:	520	case EIO_STAT:
495	case REQ_LSTAT:	521	case EIO_LSTAT:
496	case REQ_FSTAT:	522	case EIO_FSTAT:
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	523	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
498	PL_laststatval = req->result;	524	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);	525	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));	526	PUSHs (sv_result);
501	break;	527	break;
502		528
503	case REQ_READ:	529	case EIO_READ:
		530	{
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	531	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;	532	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));	533	SvPOK_only (req->sv2);
		534	SvSETMAGIC (req->sv2);
		535	PUSHs (sv_result);
		536	}
507	break;	537	break;
508		538
		539	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		540	if (req->result > 0)
		541	SvIV_set (sv_result, 0);
		542	/* FALLTHROUGH */
		543
509	default:	544	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	545	PUSHs (sv_result);
511	break;	546	break;
512	}	547	}
513		548
514	errno = req->errorno;	549	errno = req->errorno;
515		550
516	PUTBACK;	551	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	552	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	553	SPAGAIN;
		554
		555	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		556	SvREFCNT_dec (sv_result);
		557	else
		558	sv_result_cache = sv_result;
519		559
520	FREETMPS;	560	FREETMPS;
521	LEAVE;	561	LEAVE;
		562
		563	PUTBACK;
522	}	564	}
523		565
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	566	return !!SvTRUE (ERRSV);
539	}	567	}
540		568
541	static void req_free (aio_req req)	569	static void req_destroy (aio_req req)
542	{	570	{
543	if (req->self)	571	if (req->self)
544	{	572	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	573	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	574	SvREFCNT_dec (req->self);
…		…
548		576
549	SvREFCNT_dec (req->sv1);	577	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	578	SvREFCNT_dec (req->sv2);
551	SvREFCNT_dec (req->callback);	579	SvREFCNT_dec (req->callback);
552		580
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	581	Safefree (req);
557	}	582	}
558		583
559	static void req_cancel_subs (aio_req grp)	584	static void req_cancel_subs (aio_req grp)
560	{	585	{
561	aio_req sub;	586	aio_req sub;
562		587
563	if (grp->type != REQ_GROUP)	588	if (grp->type != EIO_GROUP)
564	return;	589	return;
565		590
566	SvREFCNT_dec (grp->sv2);	591	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	592	grp->sv2 = 0;
568		593
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	594	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	595	}
572		596
573	static void req_cancel (aio_req req)	597	static void
		598	create_respipe (void)
574	{	599	{
575	req->flags |= FLAG_CANCELLED;	600	if (s_epipe_renew (&respipe))
576		601	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	602	}
579		603
580	static void *aio_proc(void *arg);
581
582	static void start_thread (void)
583	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()	604	static void poll_wait (void)
676	{	605	{
677	fd_set rfd;
678
679	while (nreqs)	606	while (eio_nreqs ())
680	{	607	{
681	int size;	608	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	609
		610	X_LOCK (reslock);
683	size = res_queue.size;	611	size = res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	612	X_UNLOCK (reslock);
685		613
686	if (size)	614	if (size)
687	return;	615	return;
688		616
689	maybe_start_thread ();	617	etp_maybe_start_thread ();
690		618
691	FD_ZERO(&rfd);	619	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	620	}
696	}	621	}
697		622
698	static int poll_cb ()	623	static int poll_cb (void)
699	{	624	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	625	for (;;)
713	{	626	{
714	for (;;)	627	int res = eio_poll ();
715	{
716	maybe_start_thread ();
717		628
718	LOCK (reslock);	629	if (res > 0)
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);	630	croak (0);
753	}
754		631
755	count++;	632	if (!max_outstanding || max_outstanding > eio_nreqs ())
756	}	633	return res;
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;
774		634
775	poll_wait ();	635	poll_wait ();
776
777	++maxreqs;
778	}	636	}
779
780	unblock_sig ();
781	return count;
782	}	637	}
783		638
784	static void create_pipe ()	639	static void atfork_child (void)
785	{	640	{
786	if (pipe (respipe))	641	create_respipe ();
787	croak ("unable to initialize result pipe");
788
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}	642	}
795		643
796	/*****************************************************************************/	644	/*****************************************************************************/
797	/* work around various missing functions */
798		645
799	#if !HAVE_PREADWRITE	646	#if !_POSIX_MAPPED_FILES
800	# define pread aio_pread	647	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
801	# define pwrite aio_pwrite	648	# define munmap(addr,length) (errno = ENOSYS, -1)
802		649	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}
824
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif	650	#endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974		651
975	if (res < 0	652	#define MMAP_MAGIC PERL_MAGIC_ext
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
977	#if __solaris
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
979	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985		653
986	res = 0;	654	static int
		655	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		656	{
		657	int old_errno = errno;
		658	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		659	errno = old_errno;
987		660
988	while (count)	661	mg->mg_obj = 0; /* just in case */
989	{
990	ssize_t cnt;
991
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
993		662
994	if (cnt <= 0)	663	SvREADONLY_off (sv);
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999		664
1000	cnt = write (ofd, aio_buf, cnt);	665	if (SvPVX (sv) != mg->mg_ptr)
		666	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1001		667
1002	if (cnt <= 0)	668	SvCUR_set (sv, 0);
1003	{	669	SvPVX (sv) = 0;
1004	if (cnt && !res) res = -1;	670	SvOK_off (sv);
1005	break;
1006	}
1007		671
1008	offset += cnt;
1009	res += cnt;
1010	count -= cnt;
1011	}
1012	}
1013
1014	return res;	672	return 0;
1015	}	673	}
1016		674
1017	/* read a full directory */	675	static MGVTBL mmap_vtbl = {
1018	static void scandir_ (aio_req req, worker *self)	676	0, 0, 0, 0, mmap_free
1019	{	677	};
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078		678
1079	/*****************************************************************************/	679	/*****************************************************************************/
1080		680
1081	static void *aio_proc (void *thr_arg)	681	static SV *
		682	get_cb (SV *cb_sv)
1082	{	683	{
1083	aio_req req;	684	SvGETMAGIC (cb_sv);
1084	struct timespec ts;	685	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}	686	}
1303		687
1304	#define dREQ \	688	#define dREQ \
		689	SV *cb_cv; \
1305	aio_req req; \	690	aio_req req; \
1306	int req_pri = next_pri; \	691	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \	692	next_pri = EIO_PRI_DEFAULT; \
1308	\	693	\
1309	if (SvOK (callback) && !SvROK (callback)) \	694	cb_cv = get_cb (callback); \
1310	croak ("callback must be undef or of reference type"); \
1311	\	695	\
1312	Newz (0, req, 1, aio_cb); \	696	Newz (0, req, 1, eio_req); \
1313	if (!req) \	697	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \	698	croak ("out of memory during eio_req allocation"); \
1315	\	699	\
1316	req->callback = newSVsv (callback); \	700	req->callback = SvREFCNT_inc (cb_cv); \
1317	req->pri = req_pri	701	req->pri = req_pri
1318		702
1319	#define REQ_SEND \	703	#define REQ_SEND \
		704	PUTBACK; \
1320	req_send (req); \	705	req_submit (req); \
		706	SPAGAIN; \
1321	\	707	\
1322	if (GIMME_V != G_VOID) \	708	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));	709	XPUSHs (req_sv (req, aio_req_stash));
1324		710
1325	MODULE = IO::AIO PACKAGE = IO::AIO	711	MODULE = IO::AIO PACKAGE = IO::AIO
1326		712
1327	PROTOTYPES: ENABLE	713	PROTOTYPES: ENABLE
1328		714
1329	BOOT:	715	BOOT:
1330	{	716	{
		717	static const struct {
		718	const char *name;
		719	IV iv;
		720	} *civ, const_iv[] = {
		721	# define const_niv(name, value) { # name, (IV) value },
		722	# define const_iv(name) { # name, (IV) name },
		723	# define const_eio(name) { # name, (IV) EIO_ ## name },
		724	const_iv (EXDEV)
		725	const_iv (ENOSYS)
		726	const_iv (O_RDONLY)
		727	const_iv (O_WRONLY)
		728	const_iv (O_RDWR)
		729	const_iv (O_CREAT)
		730	const_iv (O_TRUNC)
		731	const_iv (O_EXCL)
		732	const_iv (O_APPEND)
		733	#ifndef _WIN32
		734	const_iv (S_IFIFO)
		735	#endif
		736	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		737	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		738	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		739	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		740	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		741	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		742
		743	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		744	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		745	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		746	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		747	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		748
		749	const_iv (ST_RDONLY)
		750	const_iv (ST_NOSUID)
		751	const_iv (ST_NODEV)
		752	const_iv (ST_NOEXEC)
		753	const_iv (ST_SYNCHRONOUS)
		754	const_iv (ST_MANDLOCK)
		755	const_iv (ST_WRITE)
		756	const_iv (ST_APPEND)
		757	const_iv (ST_IMMUTABLE)
		758	const_iv (ST_NOATIME)
		759	const_iv (ST_NODIRATIME)
		760	const_iv (ST_RELATIME)
		761
		762	const_iv (PROT_NONE)
		763	const_iv (PROT_EXEC)
		764	const_iv (PROT_READ)
		765	const_iv (PROT_WRITE)
		766
		767	/*const_iv (MAP_FIXED)*/
		768	const_iv (MAP_PRIVATE)
		769	const_iv (MAP_SHARED)
		770	const_iv (MAP_ANONYMOUS)
		771
		772	/* linuxish */
		773	const_iv (MAP_HUGETLB)
		774	const_iv (MAP_LOCKED)
		775	const_iv (MAP_NORESERVE)
		776	const_iv (MAP_POPULATE)
		777	const_iv (MAP_NONBLOCK)
		778
		779	const_iv (MCL_FUTURE)
		780	const_iv (MCL_CURRENT)
		781
		782	const_eio (MS_ASYNC)
		783	const_eio (MS_INVALIDATE)
		784	const_eio (MS_SYNC)
		785
		786	const_eio (MT_MODIFY)
		787
		788	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		789	const_eio (SYNC_FILE_RANGE_WRITE)
		790	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		791
		792	const_eio (READDIR_DENTS)
		793	const_eio (READDIR_DIRS_FIRST)
		794	const_eio (READDIR_STAT_ORDER)
		795	const_eio (READDIR_FOUND_UNKNOWN)
		796
		797	const_eio (DT_UNKNOWN)
		798	const_eio (DT_FIFO)
		799	const_eio (DT_CHR)
		800	const_eio (DT_DIR)
		801	const_eio (DT_BLK)
		802	const_eio (DT_REG)
		803	const_eio (DT_LNK)
		804	const_eio (DT_SOCK)
		805	const_eio (DT_WHT)
		806	};
		807
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	808	aio_stash = gv_stashpv ("IO::AIO" , 1);
		809	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		810	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1332		811
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	812	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	813	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		814
		815	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		816
1341	create_pipe ();	817	create_respipe ();
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);	818
		819	if (eio_init (want_poll, done_poll) < 0)
		820	croak ("IO::AIO: unable to initialise eio library");
		821
		822	/* atfork child called in fifo order, so before eio's handler */
		823	X_THREAD_ATFORK (0, 0, atfork_child);
1343	}	824	}
1344		825
1345	void	826	void
1346	max_poll_reqs (int nreqs)	827	max_poll_reqs (int nreqs)
1347	PROTOTYPE: $	828	PROTOTYPE: $
1348	CODE:	829	CODE:
1349	max_poll_reqs = nreqs;	830	eio_set_max_poll_reqs (nreqs);
1350		831
1351	void	832	void
1352	max_poll_time (double nseconds)	833	max_poll_time (double nseconds)
1353	PROTOTYPE: $	834	PROTOTYPE: $
1354	CODE:	835	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	836	eio_set_max_poll_time (nseconds);
1356		837
1357	void	838	void
1358	min_parallel (int nthreads)	839	min_parallel (int nthreads)
1359	PROTOTYPE: $	840	PROTOTYPE: $
		841	CODE:
		842	eio_set_min_parallel (nthreads);
1360		843
1361	void	844	void
1362	max_parallel (int nthreads)	845	max_parallel (int nthreads)
1363	PROTOTYPE: $	846	PROTOTYPE: $
		847	CODE:
		848	eio_set_max_parallel (nthreads);
1364		849
1365	void	850	void
1366	max_idle (int nthreads)	851	max_idle (int nthreads)
1367	PROTOTYPE: $	852	PROTOTYPE: $
1368	CODE:	853	CODE:
1369	set_max_idle (nthreads);	854	eio_set_max_idle (nthreads);
1370		855
1371	int	856	void
1372	max_outstanding (int maxreqs)	857	max_outstanding (int maxreqs)
1373	PROTOTYPE: $	858	PROTOTYPE: $
1374	CODE:	859	CODE:
1375	RETVAL = max_outstanding;
1376	max_outstanding = maxreqs;	860	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		861
1380	void	862	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	863	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1382	PROTOTYPE: $$$;$	864	PROTOTYPE: $$$;$
1383	PPCODE:	865	PPCODE:
1384	{	866	{
1385	dREQ;	867	dREQ;
1386		868
1387	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	872	req->int1 = flags;
1391	req->mode = mode;	873	req->int2 = mode;
1392		874
1393	REQ_SEND;	875	REQ_SEND;
		876	}
		877
		878	void
		879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		880	PROTOTYPE: $;$
		881	ALIAS:
		882	aio_fsync = EIO_FSYNC
		883	aio_fdatasync = EIO_FDATASYNC
		884	PPCODE:
		885	{
		886	int fd = s_fileno_croak (fh, 0);
		887	dREQ;
		888
		889	req->type = ix;
		890	req->sv1 = newSVsv (fh);
		891	req->int1 = fd;
		892
		893	REQ_SEND (req);
		894	}
		895
		896	void
		897	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		898	PROTOTYPE: $$$$;$
		899	PPCODE:
		900	{
		901	int fd = s_fileno_croak (fh, 0);
		902	dREQ;
		903
		904	req->type = EIO_SYNC_FILE_RANGE;
		905	req->sv1 = newSVsv (fh);
		906	req->int1 = fd;
		907	req->offs = offset;
		908	req->size = nbytes;
		909	req->int2 = flags;
		910
		911	REQ_SEND (req);
1394	}	912	}
1395		913
1396	void	914	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	915	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1398	PROTOTYPE: $;$	916	PROTOTYPE: $;$
		917	PPCODE:
		918	{
		919	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		920	int fd = s_fileno_croak (fh, 0);
		921	dREQ;
		922
		923	if (close_pipe < 0)
		924	{
		925	int pipefd [2];
		926
		927	if (pipe (pipefd) < 0
		928	|| close (pipefd [1]) < 0
		929	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		930	abort (); /*D*/
		931
		932	close_pipe = pipefd [0];
		933	}
		934
		935	req->type = EIO_DUP2;
		936	req->int1 = close_pipe;
		937	req->sv2 = newSVsv (fh);
		938	req->int2 = fd;
		939
		940	REQ_SEND (req);
		941	}
		942
		943	void
		944	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1399	ALIAS:	945	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC
1403	PPCODE:
1404	{
1405	dREQ;
1406
1407	req->type = ix;
1408	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1410
1411	REQ_SEND (req);
1412	}
1413
1414	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1416	ALIAS:
1417	aio_read = REQ_READ	946	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	947	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$	948	PROTOTYPE: $$$$$;$
1420	PPCODE:	949	PPCODE:
1421	{	950	{
1422	STRLEN svlen;	951	STRLEN svlen;
		952	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	953	char *svptr = SvPVbyte (data, svlen);
1424		954	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		955
1428	if (dataoffset < 0)	956	if (dataoffset < 0)
1429	dataoffset += svlen;	957	dataoffset += svlen;
1430		958
1431	if (dataoffset < 0 || dataoffset > svlen)	959	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	960	croak ("dataoffset outside of data scalar");
1433		961
1434	if (ix == REQ_WRITE)	962	if (ix == EIO_WRITE)
1435	{	963	{
1436	/* write: check length and adjust. */	964	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	965	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	966	len = svlen - dataoffset;
1439	}	967	}
1440	else	968	else
1441	{	969	{
1442	/* read: grow scalar as necessary */	970	/* read: check type and grow scalar as necessary */
		971	SvUPGRADE (data, SVt_PV);
1443	svptr = SvGROW (data, length + dataoffset + 1);	972	svptr = SvGROW (data, len + dataoffset + 1);
1444	}	973	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		974
1449	{	975	{
1450	dREQ;	976	dREQ;
1451		977
1452	req->type = ix;	978	req->type = ix;
1453	req->sv1 = newSVsv (fh);	979	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	980	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	981	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	982	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	983	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	984	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	985	req->stroffset = dataoffset;
1461		986
1462	if (!SvREADONLY (data))	987	if (!SvREADONLY (data))
1463	{	988	{
1464	SvREADONLY_on (data);	989	SvREADONLY_on (data);
…		…
1475	PPCODE:	1000	PPCODE:
1476	{	1001	{
1477	SV *data;	1002	SV *data;
1478	dREQ;	1003	dREQ;
1479		1004
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	1005	req->type = EIO_READLINK;
1484	req->sv1 = newSVsv (path);	1006	req->sv1 = newSVsv (path);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);	1007	req->ptr1 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		1008
1489	REQ_SEND;	1009	REQ_SEND;
1490	}	1010	}
1491		1011
1492	void	1012	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	1013	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$	1014	PROTOTYPE: $$$$;$
1495	PPCODE:	1015	PPCODE:
1496	{	1016	{
		1017	int ifd = s_fileno_croak (in_fh , 0);
		1018	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	1019	dREQ;
1498		1020
1499	req->type = REQ_SENDFILE;	1021	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	1022	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1023	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	1024	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1025	req->int2 = ifd;
1504	req->offs = in_offset;	1026	req->offs = in_offset;
1505	req->size = length;	1027	req->size = length;
1506		1028
1507	REQ_SEND;	1029	REQ_SEND;
1508	}	1030	}
1509		1031
1510	void	1032	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	1033	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1512	PROTOTYPE: $$$;$	1034	PROTOTYPE: $$$;$
1513	PPCODE:	1035	PPCODE:
1514	{	1036	{
		1037	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	1038	dREQ;
1516		1039
1517	req->type = REQ_READAHEAD;	1040	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	1041	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1042	req->int1 = fd;
1520	req->offs = offset;	1043	req->offs = offset;
1521	req->size = length;	1044	req->size = length;
1522		1045
1523	REQ_SEND;	1046	REQ_SEND;
1524	}	1047	}
1525		1048
1526	void	1049	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1050	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1528	ALIAS:	1051	ALIAS:
1529	aio_stat = REQ_STAT	1052	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1053	aio_lstat = EIO_LSTAT
		1054	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1055	PPCODE:
1532	{	1056	{
1533	dREQ;	1057	dREQ;
1534		1058
1535	req->ptr2 = malloc (sizeof (Stat_t));
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);	1059	req->sv1 = newSVsv (fh_or_path);
1544		1060
1545	if (SvPOK (fh_or_path))	1061	if (SvPOK (req->sv1))
1546	{	1062	{
1547	req->type = ix;	1063	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);	1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}	1065	}
1550	else	1066	else
1551	{	1067	{
1552	req->type = REQ_FSTAT;	1068	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}	1070	}
1555		1071
1556	REQ_SEND;	1072	REQ_SEND;
1557	}	1073	}
…		…
1564		1080
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1081	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1082	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1083	req->sv1 = newSVsv (fh_or_path);
1568		1084
1569	if (SvPOK (fh_or_path))	1085	if (SvPOK (req->sv1))
1570	{	1086	{
1571	req->type = REQ_UTIME;	1087	req->type = EIO_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1088	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}	1089	}
1574	else	1090	else
1575	{	1091	{
1576	req->type = REQ_FUTIME;	1092	req->type = EIO_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1093	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}	1094	}
1579		1095
1580	REQ_SEND;	1096	REQ_SEND;
1581	}	1097	}
1582		1098
1583	void	1099	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1100	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1585	PPCODE:	1101	PPCODE:
1586	{	1102	{
1587	dREQ;	1103	dREQ;
1588		1104
1589	req->mode = mode;
1590	req->sv1 = newSVsv (fh_or_path);	1105	req->sv1 = newSVsv (fh_or_path);
		1106	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1591		1107
1592	if (SvPOK (fh_or_path))	1108	if (SvPOK (req->sv1))
1593	{	1109	{
1594	req->type = REQ_CHMOD;	1110	req->type = EIO_TRUNCATE;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);	1111	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}	1112	}
1597	else	1113	else
1598	{	1114	{
1599	req->type = REQ_FCHMOD;	1115	req->type = EIO_FTRUNCATE;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1116	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}	1117	}
1602		1118
1603	REQ_SEND;	1119	REQ_SEND;
1604	}	1120	}
1605		1121
1606	void	1122	void
1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1123	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1124	ALIAS:
		1125	aio_chmod = EIO_CHMOD
		1126	aio_mkdir = EIO_MKDIR
1608	PPCODE:	1127	PPCODE:
1609	{	1128	{
1610	dREQ;	1129	dREQ;
1611		1130
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1131	req->int2 = mode;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1132	req->sv1 = newSVsv (fh_or_path);
1615		1133
1616	if (SvPOK (fh_or_path))	1134	if (SvPOK (req->sv1))
1617	{	1135	{
1618	req->type = REQ_CHOWN;	1136	req->type = ix;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);	1137	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}	1138	}
1621	else	1139	else
1622	{	1140	{
1623	req->type = REQ_FCHOWN;	1141	req->type = EIO_FCHMOD;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1142	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}	1143	}
1626		1144
1627	REQ_SEND;	1145	REQ_SEND;
1628	}	1146	}
1629		1147
1630	void	1148	void
		1149	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1150	PPCODE:
		1151	{
		1152	dREQ;
		1153
		1154	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1155	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1156	req->sv1 = newSVsv (fh_or_path);
		1157
		1158	if (SvPOK (req->sv1))
		1159	{
		1160	req->type = EIO_CHOWN;
		1161	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1162	}
		1163	else
		1164	{
		1165	req->type = EIO_FCHOWN;
		1166	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1167	}
		1168
		1169	REQ_SEND;
		1170	}
		1171
		1172	void
		1173	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1174	PPCODE:
		1175	{
		1176	dREQ;
		1177
		1178	req->type = EIO_READDIR;
		1179	req->sv1 = newSVsv (pathname);
		1180	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1181	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1182
		1183	if (flags & EIO_READDIR_DENTS)
		1184	req->int1 |= EIO_READDIR_CUSTOM2;
		1185
		1186	REQ_SEND;
		1187	}
		1188
		1189	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1190	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1632	ALIAS:	1191	ALIAS:
1633	aio_unlink = REQ_UNLINK	1192	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1193	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1194	aio_readdir = EIO_READDIR
1636	PPCODE:	1195	PPCODE:
1637	{	1196	{
1638	dREQ;	1197	dREQ;
1639		1198
1640	req->type = ix;	1199	req->type = ix;
…		…
1643		1202
1644	REQ_SEND;	1203	REQ_SEND;
1645	}	1204	}
1646		1205
1647	void	1206	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1649	PPCODE:
1650	{
1651	dREQ;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1207	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:	1208	ALIAS:
1664	aio_link = REQ_LINK	1209	aio_link = EIO_LINK
1665	aio_symlink = REQ_SYMLINK	1210	aio_symlink = EIO_SYMLINK
1666	aio_rename = REQ_RENAME	1211	aio_rename = EIO_RENAME
1667	PPCODE:	1212	PPCODE:
1668	{	1213	{
1669	dREQ;	1214	dREQ;
1670		1215
1671	req->type = ix;	1216	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);	1217	req->sv1 = newSVsv (oldpath);
		1218	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1219	req->sv2 = newSVsv (newpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);	1220	req->ptr2 = SvPVbyte_nolen (req->sv2);
1674	req->sv1 = newSVsv (newpath);
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1221
1677	REQ_SEND;	1222	REQ_SEND;
1678	}	1223	}
1679		1224
1680	void	1225	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1226	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1682	PPCODE:	1227	PPCODE:
1683	{	1228	{
1684	dREQ;	1229	dREQ;
1685		1230
1686	req->type = REQ_MKNOD;	1231	req->type = EIO_MKNOD;
1687	req->sv1 = newSVsv (pathname);	1232	req->sv1 = newSVsv (pathname);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);	1233	req->ptr1 = SvPVbyte_nolen (req->sv1);
1689	req->mode = (mode_t)mode;	1234	req->int2 = (mode_t)mode;
1690	req->offs = dev;	1235	req->offs = dev;
1691		1236
1692	REQ_SEND;	1237	REQ_SEND;
1693	}	1238	}
1694		1239
1695	void	1240	void
		1241	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1242	ALIAS:
		1243	aio_mtouch = EIO_MTOUCH
		1244	aio_msync = EIO_MSYNC
		1245	PROTOTYPE: $$$$;$
		1246	PPCODE:
		1247	{
		1248	STRLEN svlen;
		1249	UV len = SvUV (length);
		1250	char *svptr = SvPVbyte (data, svlen);
		1251
		1252	if (offset < 0)
		1253	offset += svlen;
		1254
		1255	if (offset < 0 || offset > svlen)
		1256	croak ("offset outside of scalar");
		1257
		1258	if (!SvOK (length) || len + offset > svlen)
		1259	len = svlen - offset;
		1260
		1261	{
		1262	dREQ;
		1263
		1264	req->type = ix;
		1265	req->size = len;
		1266	req->sv2 = SvREFCNT_inc (data);
		1267	req->ptr2 = (char *)svptr + offset;
		1268	req->int1 = flags;
		1269
		1270	REQ_SEND;
		1271	}
		1272	}
		1273
		1274	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1275	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:	1276	PPCODE:
1698	{	1277	{
1699	dREQ;	1278	dREQ;
1700		1279
1701	req->type = REQ_BUSY;	1280	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	1281	req->nv1 = delay < 0. ? 0. : delay;
1703		1282
1704	REQ_SEND;	1283	REQ_SEND;
1705	}	1284	}
1706		1285
…		…
1709	PROTOTYPE: ;$	1288	PROTOTYPE: ;$
1710	PPCODE:	1289	PPCODE:
1711	{	1290	{
1712	dREQ;	1291	dREQ;
1713		1292
1714	req->type = REQ_GROUP;	1293	req->type = EIO_GROUP;
1715		1294
1716	req_send (req);	1295	req_submit (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1296	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	1297	}
1719		1298
1720	void	1299	void
1721	aio_nop (SV *callback=&PL_sv_undef)	1300	aio_nop (SV *callback=&PL_sv_undef)
		1301	ALIAS:
		1302	aio_nop = EIO_NOP
		1303	aio_sync = EIO_SYNC
1722	PPCODE:	1304	PPCODE:
1723	{	1305	{
1724	dREQ;	1306	dREQ;
1725		1307
1726	req->type = REQ_NOP;	1308	req->type = ix;
1727		1309
1728	REQ_SEND;	1310	REQ_SEND;
1729	}	1311	}
1730		1312
1731	int	1313	int
1732	aioreq_pri (int pri = 0)	1314	aioreq_pri (int pri = 0)
1733	PROTOTYPE: ;$	1315	PROTOTYPE: ;$
1734	CODE:	1316	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	1317	RETVAL = next_pri;
1736	if (items > 0)	1318	if (items > 0)
1737	{	1319	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	1320	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	1321	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	1322	next_pri = pri;
1741	}	1323	}
1742	OUTPUT:	1324	OUTPUT:
1743	RETVAL	1325	RETVAL
1744		1326
1745	void	1327	void
1746	aioreq_nice (int nice = 0)	1328	aioreq_nice (int nice = 0)
1747	CODE:	1329	CODE:
1748	nice = next_pri - nice;	1330	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	1331	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	1332	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	1333	next_pri = nice;
1752		1334
1753	void	1335	void
1754	flush ()	1336	flush ()
1755	PROTOTYPE:	1337	PROTOTYPE:
1756	CODE:	1338	CODE:
1757	while (nreqs)	1339	while (eio_nreqs ())
1758	{	1340	{
1759	poll_wait ();	1341	poll_wait ();
1760	poll_cb ();	1342	poll_cb ();
1761	}	1343	}
1762		1344
…		…
1771		1353
1772	int	1354	int
1773	poll_fileno()	1355	poll_fileno()
1774	PROTOTYPE:	1356	PROTOTYPE:
1775	CODE:	1357	CODE:
1776	RETVAL = respipe [0];	1358	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	1359	OUTPUT:
1778	RETVAL	1360	RETVAL
1779		1361
1780	int	1362	int
1781	poll_cb(...)	1363	poll_cb(...)
…		…
1789	poll_wait()	1371	poll_wait()
1790	PROTOTYPE:	1372	PROTOTYPE:
1791	CODE:	1373	CODE:
1792	poll_wait ();	1374	poll_wait ();
1793		1375
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	1376	int
1832	nreqs()	1377	nreqs()
1833	PROTOTYPE:	1378	PROTOTYPE:
1834	CODE:	1379	CODE:
1835	RETVAL = nreqs;	1380	RETVAL = eio_nreqs ();
1836	OUTPUT:	1381	OUTPUT:
1837	RETVAL	1382	RETVAL
1838		1383
1839	int	1384	int
1840	nready()	1385	nready()
1841	PROTOTYPE:	1386	PROTOTYPE:
1842	CODE:	1387	CODE:
1843	RETVAL = get_nready ();	1388	RETVAL = eio_nready ();
1844	OUTPUT:	1389	OUTPUT:
1845	RETVAL	1390	RETVAL
1846		1391
1847	int	1392	int
1848	npending()	1393	npending()
1849	PROTOTYPE:	1394	PROTOTYPE:
1850	CODE:	1395	CODE:
1851	RETVAL = get_npending ();	1396	RETVAL = eio_npending ();
1852	OUTPUT:	1397	OUTPUT:
1853	RETVAL	1398	RETVAL
1854		1399
1855	int	1400	int
1856	nthreads()	1401	nthreads()
1857	PROTOTYPE:	1402	PROTOTYPE:
1858	CODE:	1403	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1404	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1405	OUTPUT:
1863	RETVAL	1406	RETVAL
1864		1407
		1408	int
		1409	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1410	PROTOTYPE: $$$$
		1411	CODE:
		1412	RETVAL = posix_fadvise (fh, offset, length, advice);
		1413	OUTPUT:
		1414	RETVAL
		1415
		1416	ssize_t
		1417	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1418	PROTOTYPE: $$$$
		1419	CODE:
		1420	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1421	OUTPUT:
		1422	RETVAL
		1423
		1424	void
		1425	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1426	PROTOTYPE: $$$$$;$
		1427	PPCODE:
		1428	sv_unmagic (scalar, MMAP_MAGIC);
		1429	{
		1430	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1431	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1432	if (addr == (void *)-1)
		1433	XSRETURN_NO;
		1434
		1435	sv_force_normal (scalar);
		1436
		1437	/* we store the length in mg_obj, as namlen is I32 :/ */
		1438	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1439	->mg_obj = (SV *)length;
		1440
		1441	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1442
		1443	if (!(prot & PROT_WRITE))
		1444	SvREADONLY_on (scalar);
		1445
		1446	if (SvLEN (scalar))
		1447	Safefree (SvPVX (scalar));
		1448
		1449	SvPVX (scalar) = (char *)addr;
		1450	SvCUR_set (scalar, length);
		1451	SvLEN_set (scalar, 0);
		1452	SvPOK_only (scalar);
		1453
		1454	XSRETURN_YES;
		1455	}
		1456
		1457	void
		1458	munmap (SV *scalar)
		1459	PROTOTYPE: $
		1460	CODE:
		1461	sv_unmagic (scalar, MMAP_MAGIC);
		1462
		1463	int
		1464	madvise (SV *scalar, off_t offset, off_t length, IV advice_or_prot)
		1465	ALIAS:
		1466	mprotect = 1
		1467	PROTOTYPE: $$$$
		1468	CODE:
		1469	{
		1470	STRLEN cur;
		1471	char *addr = SvPVbyte (scalar, cur);
		1472
		1473	if (offset > cur)
		1474	RETVAL = errno = EFAULT;
		1475	else
		1476	{
		1477	if (!SvOK (ST (2)))
		1478	length = cur - offset;
		1479
		1480	if (offset + length > cur)
		1481	RETVAL = errno = EFAULT;
		1482	else
		1483	switch (ix)
		1484	{
		1485	case 0: RETVAL = posix_madvise (addr + offset, length, advice_or_prot); break;
		1486	case 1: RETVAL = mprotect (addr + offset, length, advice_or_prot); break;
		1487	}
		1488	}
		1489	}
		1490	OUTPUT:
		1491	RETVAL
		1492
		1493	int
		1494	mlockall (int flags)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	#if _POSIX_MEMLOCK
		1498	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1499	extern int mallopt (int, int);
		1500	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1501	#endif
		1502	mlockall (flags);
		1503	#else
		1504	RETVAL = -1;
		1505	errno = ENOSYS;
		1506	#endif
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlockall ()
		1512	PROTOTYPE:
		1513	CODE:
		1514	#if _POSIX_MEMLOCK
		1515	munlockall ();
		1516	#else
		1517	RETVAL = -1;
		1518	errno = ENOSYS;
		1519	#endif
		1520	OUTPUT:
		1521	RETVAL
		1522
		1523	void _on_next_submit (SV *cb)
		1524	CODE:
		1525	SvREFCNT_dec (on_next_submit);
		1526	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1527
1865	PROTOTYPES: DISABLE	1528	PROTOTYPES: DISABLE
1866		1529
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1530	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		1531
1869	void	1532	void
1870	cancel (aio_req_ornot req)	1533	cancel (aio_req_ornot req)
1871	CODE:	1534	CODE:
1872	req_cancel (req);	1535	eio_cancel (req);
1873		1536
1874	void	1537	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1538	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1876	CODE:	1539	PPCODE:
		1540	{
		1541	if (GIMME_V != G_VOID)
		1542	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1543
		1544	if (items > 1)
		1545	{
		1546	SV *cb_cv =get_cb (callback);
		1547
1877	SvREFCNT_dec (req->callback);	1548	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	1549	req->callback = SvREFCNT_inc (cb_cv);
		1550	}
		1551	}
1879		1552
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1553	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		1554
1882	void	1555	void
1883	add (aio_req grp, ...)	1556	add (aio_req grp, ...)
1884	PPCODE:	1557	PPCODE:
1885	{	1558	{
1886	int i;	1559	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		1560
1892	if (grp->int1 == 2)	1561	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1562	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		1563
1895	for (i = 1; i < items; ++i )	1564	for (i = 1; i < items; ++i )
1896	{	1565	{
		1566	aio_req req;
		1567
1897	if (GIMME_V != G_VOID)	1568	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1569	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		1570
1900	req = SvAIO_REQ (ST (i));	1571	req = SvAIO_REQ (ST (i));
1901		1572
1902	if (req)	1573	if (req)
1903	{	1574	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	1575	}
1916	}	1576	}
1917		1577
1918	void	1578	void
1919	cancel_subs (aio_req_ornot req)	1579	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	1588	AV *av;
1929		1589
1930	grp->errorno = errno;	1590	grp->errorno = errno;
1931		1591
1932	av = newAV ();	1592	av = newAV ();
		1593	av_extend (av, items - 1);
1933		1594
1934	for (i = 1; i < items; ++i )	1595	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	1596	av_push (av, newSVsv (ST (i)));
1936		1597
1937	SvREFCNT_dec (grp->sv1);	1598	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	1605	grp->errorno = errorno;
1945		1606
1946	void	1607	void
1947	limit (aio_req grp, int limit)	1608	limit (aio_req grp, int limit)
1948	CODE:	1609	CODE:
1949	grp->int2 = limit;	1610	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		1611
1952	void	1612	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	1613	feed (aio_req grp, SV *callback=&PL_sv_undef)
1954	CODE:	1614	CODE:
1955	{	1615	{
1956	SvREFCNT_dec (grp->sv2);	1616	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	1617	grp->sv2 = newSVsv (callback);
		1618	grp->feed = aio_grp_feed;
1958		1619
1959	if (grp->int2 <= 0)	1620	if (grp->int2 <= 0)
1960	grp->int2 = 2;	1621	grp->int2 = 2;
1961		1622
1962	aio_grp_feed (grp);	1623	eio_grp_limit (grp, grp->int2);
1963	}	1624	}
1964		1625

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