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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.95 by root, Sun Nov 26 22:47:58 2006 UTC vs.
Revision 1.176 by root, Thu Dec 2 10:04:47 2010 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>
		16	#include <sys/statvfs.h>
28	#include <limits.h>	17	#include <limits.h>
29	#include <unistd.h>
30	#include <fcntl.h>	18	#include <fcntl.h>
31	#include <signal.h>
32	#include <sched.h>	19	#include <sched.h>
33		20
34	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
35	# if __linux
36	# include <sys/sendfile.h>	22	# include <sys/mman.h>
37	# elif __freebsd	23	#endif
38	# include <sys/socket.h>	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
39	# include <sys/uio.h>	68	# include <sys/time.h>
40	# elif __hpux
41	# include <sys/socket.h>
42	# elif __solaris /* not yet */
43	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		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/config.h"
		124	#include "libeio/eio.h"
		125
		126	#ifndef POSIX_FADV_NORMAL
		127	# define POSIX_FADV_NORMAL 0
		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 !HAVE_POSIX_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	#endif
		152	#ifndef POSIX_MADV_SEQUENTIAL
		153	# define POSIX_MADV_SEQUENTIAL 0
		154	#endif
		155	#ifndef POSIX_MADV_RANDOM
		156	# define POSIX_MADV_RANDOM 0
		157	#endif
		158	#ifndef POSIX_MADV_WILLNEED
		159	# define POSIX_MADV_WILLNEED 0
		160	#endif
		161	#ifndef POSIX_MADV_DONTNEED
		162	# define POSIX_MADV_DONTNEED 0
		163	#endif
		164
		165	#if !HAVE_POSIX_MADVISE
		166	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		167	#endif
		168
		169	#ifndef PROT_NONE
		170	# define PROT_NONE 0
		171	#endif
		172	#ifndef PROT_READ
		173	# define PROT_READ 0
		174	#endif
		175	#ifndef PROT_WRITE
		176	# define PROT_READ 0
		177	#endif
		178	#ifndef PROT_EXEC
		179	# define PROT_EXEC 0
		180	#endif
		181
		182	#ifndef ST_NODEV
		183	# define ST_NODEV 0
		184	#endif
		185	#ifndef ST_NOEXEC
		186	# define ST_NOEXEC 0
		187	#endif
		188	#ifndef ST_SYNCHRONOUS
		189	# define ST_SYNCHRONOUS 0
		190	#endif
		191	#ifndef ST_MANDLOCK
		192	# define ST_MANDLOCK 0
		193	#endif
		194	#ifndef ST_WRITE
		195	# define ST_WRITE 0
		196	#endif
		197	#ifndef ST_APPEND
		198	# define ST_APPEND 0
		199	#endif
		200	#ifndef ST_IMMUTABLE
		201	# define ST_IMMUTABLE 0
		202	#endif
		203	#ifndef ST_NOATIME
		204	# define ST_NOATIME 0
		205	#endif
		206	#ifndef ST_NODIRATIME
		207	# define ST_NODIRATIME 0
		208	#endif
		209	#ifndef ST_RELATIME
		210	# define ST_RELATIME 0
		211	#endif
		212
		213	#ifndef MAP_ANONYMOUS
		214	# ifdef MAP_ANON
		215	# define MAP_ANONYMOUS MAP_ANON
44	# else	216	# else
45	# error sendfile support requested but not available	217	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46	# endif	218	# endif
47	#endif	219	#endif
48		220	#ifndef MAP_HUGETLB
49	/* number of seconds after which idle threads exit */	221	# 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	222	#endif
		223	#ifndef MAP_LOCKED
		224	# define MAP_LOCKED 0
80	#endif	225	#endif
		226	#ifndef MAP_NORESERVE
		227	# define MAP_NORESERVE 0
		228	#endif
		229	#ifndef MAP_POPULATE
		230	# define MAP_POPULATE 0
		231	#endif
		232	#ifndef MAP_NONBLOCK
		233	# define MAP_NONBLOCK 0
		234	#endif
81		235
82	/* buffer size for various temporary buffers */	236	#ifndef PAGESIZE
83	#define AIO_BUFSIZE 65536	237	# define PAGESIZE sysconf (_SC_PAGESIZE)
		238	#endif
84		239
85	#define dBUF \	240	static int req_invoke (eio_req *req);
86	char *aio_buf; \	241	#define EIO_FINISH(req) req_invoke (req)
87	LOCK (wrklock); \	242	static void req_destroy (eio_req *grp);
88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	243	#define EIO_DESTROY(req) req_destroy (req)
89	UNLOCK (wrklock); \
90	if (!aio_buf) \
91	return -1;
92
93	typedef SV SV8; /* byte-sv, used for argument-checking */
94		244
95	enum {	245	enum {
96	REQ_QUIT,	246	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
97	REQ_OPEN, REQ_CLOSE,
98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
99	REQ_SENDFILE,
100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101	REQ_FSYNC, REQ_FDATASYNC,
102	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
103	REQ_MKNOD, REQ_READDIR,
104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105	REQ_GROUP, REQ_NOP,
106	REQ_BUSY,
107	};	247	};
108		248
109	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
110	#define AIO_GRP_KLASS "IO::AIO::GRP"
111		250
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;	251	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
144		253
145	enum {	254	static SV *on_next_submit;
146	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	256	static int max_outstanding;
148		257
149	DEFAULT_PRI = 0,	258	static s_epipe respipe;
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		259
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);	260	static void req_destroy (aio_req req);
362	static void req_cancel (aio_req req);	261	static void req_cancel (aio_req req);
363		262
		263	static void want_poll (void)
		264	{
		265	/* write a dummy byte to the pipe so fh becomes ready */
		266	s_epipe_signal (&respipe);
		267	}
		268
		269	static void done_poll (void)
		270	{
		271	/* read any signals sent by the worker threads */
		272	s_epipe_drain (&respipe);
		273	}
		274
364	/* must be called at most once */	275	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
366	{	277	{
367	if (!req->self)	278	if (!req->self)
368	{	279	{
369	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371	}	282	}
372		283
373	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374	}	285	}
375		286
376	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
377	{	288	{
378	MAGIC *mg;	289	MAGIC *mg;
379		290
380	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	291	if (!SvROK (sv)
		292	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		293	&& SvSTASH (SvRV (sv)) != aio_req_stash
		294	&& !sv_derived_from (sv, "IO::AIO::REQ")))
381	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
382		296
383	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384		298
385	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	300	}
387		301
388	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
389	{	303	{
390	block_sig ();	304	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	305	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	306	dSP;
399		307
400	ENTER;	308	ENTER;
401	SAVETMPS;	309	SAVETMPS;
402	PUSHMARK (SP);	310	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	311	XPUSHs (req_sv (grp, aio_grp_stash));
404	PUTBACK;	312	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	314	SPAGAIN;
407	FREETMPS;	315	FREETMPS;
408	LEAVE;	316	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	}	317	}
419
420	unblock_sig ();
421	}	318	}
422		319
423	static void aio_grp_dec (aio_req grp)	320	static void req_submit (eio_req *req)
424	{	321	{
425	--grp->size;	322	eio_submit (req);
426		323
427	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	325	{
433	block_sig ();	326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
434		328
435	if (!req_invoke (grp))	329	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		330
442	req_free (grp);	331	PUSHMARK (SP);
443	unblock_sig ();	332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
444	}	334	}
445	}	335	}
446		336
447	static int req_invoke (aio_req req)	337	static int req_invoke (eio_req *req)
448	{	338	{
449	dSP;
450
451	if (req->flags & FLAG_SV1_RO_OFF)	339	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	340	SvREADONLY_off (req->sv2);
453		341
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	342	if (!EIO_CANCELLED (req) && req->callback)
455	{	343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
456	ENTER;	348	ENTER;
457	SAVETMPS;	349	SAVETMPS;
458	PUSHMARK (SP);	350	PUSHMARK (SP);
459	EXTEND (SP, 1);	351	EXTEND (SP, 1);
460		352
		353	/* do not recreate the result IV from scratch each time */
		354	if (expect_true (sv_result_cache))
		355	{
		356	sv_result = sv_result_cache; sv_result_cache = 0;
		357	SvIV_set (sv_result, req->result);
		358	}
		359	else
		360	{
		361	sv_result = newSViv (req->result);
		362	SvREADONLY_on (sv_result);
		363	}
		364
461	switch (req->type)	365	switch (req->type)
462	{	366	{
463	case REQ_READDIR:	367	case EIO_READDIR:
464	{	368	{
465	SV *rv = &PL_sv_undef;	369	SV *rv = &PL_sv_undef;
466		370
467	if (req->result >= 0)	371	if (req->result >= 0)
468	{	372	{
469	int i;	373	int i;
470	char *buf = req->ptr2;	374	char *names = (char *)req->ptr2;
		375	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471	AV *av = newAV ();	376	AV *av = newAV ();
472		377
473	av_extend (av, req->result - 1);	378	av_extend (av, req->result - 1);
474		379
475	for (i = 0; i < req->result; ++i)	380	for (i = 0; i < req->result; ++i)
476	{	381	{
477	SV *sv = newSVpv (buf, 0);	382	if (req->int1 & EIO_READDIR_DENTS)
		383	{
		384	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478		385
		386	if (req->int1 & EIO_READDIR_CUSTOM2)
		387	{
		388	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		389	AV *avent = newAV ();
		390
		391	av_extend (avent, 2);
		392
		393	if (!sv_type [ent->type])
		394	{
		395	sv_type [ent->type] = newSViv (ent->type);
		396	SvREADONLY_on (sv_type [ent->type]);
		397	}
		398
		399	av_store (avent, 0, namesv);
		400	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		401	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		402
		403	av_store (av, i, newRV_noinc ((SV *)avent));
		404	}
		405	else
479	av_store (av, i, sv);	406	av_store (av, i, namesv);
		407
		408	++ent;
		409	}
		410	else
		411	{
		412	SV *name = newSVpv (names, 0);
		413	av_store (av, i, name);
480	buf += SvCUR (sv) + 1;	414	names += SvCUR (name) + 1;
		415	}
481	}	416	}
482		417
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	418	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	419	}
485		420
486	PUSHs (rv);	421	PUSHs (rv);
		422
		423	if (req->int1 & EIO_READDIR_CUSTOM1)
		424	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487	}	425	}
488	break;	426	break;
489		427
490	case REQ_OPEN:	428	case EIO_OPEN:
491	{	429	{
492	/* convert fd to fh */	430	/* convert fd to fh */
493	SV *fh;	431	SV *fh = &PL_sv_undef;
494		432
495	PUSHs (sv_2mortal (newSViv (req->result)));	433	if (req->result >= 0)
496	PUTBACK;	434	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	435	GV *gv = (GV *)sv_newmortal ();
498	SPAGAIN;	436	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		437	char sym [64];
		438	int symlen;
		439
		440	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		441	gv_init (gv, aio_stash, sym, symlen, 0);
499		442
500	fh = POPs;	443	symlen = snprintf (
501	PUSHMARK (SP);	444	sym,
		445	sizeof (sym),
		446	"%s&=%d",
		447	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		448	(int)req->result
		449	);
		450
		451	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		452	fh = (SV *)gv;
		453	}
		454
502	XPUSHs (fh);	455	PUSHs (fh);
503	}	456	}
504	break;	457	break;
505		458
		459	case EIO_STATVFS:
		460	case EIO_FSTATVFS:
		461	{
		462	SV *rv = &PL_sv_undef;
		463
		464	if (req->result >= 0)
		465	{
		466	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		467	HV *hv = newHV ();
		468
		469	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		470
		471	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		472	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		473	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		474	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		475	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		476	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		477	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		478	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		479	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		480	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		481	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		482	}
		483
		484	PUSHs (rv);
		485	}
		486
		487	break;
		488
506	case REQ_GROUP:	489	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	490	req->int1 = 2; /* mark group as finished */
508		491
509	if (req->sv1)	492	if (req->sv1)
510	{	493	{
511	int i;	494	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	498	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	499	PUSHs (*av_fetch (av, i, 0));
517	}	500	}
518	break;	501	break;
519		502
520	case REQ_NOP:	503	case EIO_NOP:
521	case REQ_BUSY:	504	case EIO_BUSY:
522	break;	505	break;
523		506
524	case REQ_READLINK:	507	case EIO_READLINK:
525	if (req->result > 0)	508	if (req->result > 0)
526	{	509	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;	510	break;
532		511
533	case REQ_STAT:	512	case EIO_STAT:
534	case REQ_LSTAT:	513	case EIO_LSTAT:
535	case REQ_FSTAT:	514	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	515	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	516	PL_laststatval = req->result;
538	PL_statcache = *(Stat_t *)(req->ptr2);	517	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	518	PUSHs (sv_result);
540	break;	519	break;
541		520
542	case REQ_READ:	521	case EIO_READ:
		522	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	523	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	524	*SvEND (req->sv2) = 0;
545	PUSHs (sv_2mortal (newSViv (req->result)));	525	SvPOK_only (req->sv2);
		526	SvSETMAGIC (req->sv2);
		527	PUSHs (sv_result);
		528	}
546	break;	529	break;
547		530
		531	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		532	if (req->result > 0)
		533	SvIV_set (sv_result, 0);
		534	/* FALLTHROUGH */
		535
548	default:	536	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	537	PUSHs (sv_result);
550	break;	538	break;
551	}	539	}
552		540
553	errno = req->errorno;	541	errno = req->errorno;
554		542
555	PUTBACK;	543	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	544	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	545	SPAGAIN;
		546
		547	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		548	SvREFCNT_dec (sv_result);
		549	else
		550	sv_result_cache = sv_result;
558		551
559	FREETMPS;	552	FREETMPS;
560	LEAVE;	553	LEAVE;
		554
		555	PUTBACK;
561	}	556	}
562		557
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);	558	return !!SvTRUE (ERRSV);
578	}	559	}
579		560
580	static void req_free (aio_req req)	561	static void req_destroy (aio_req req)
581	{	562	{
582	if (req->self)	563	if (req->self)
583	{	564	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	565	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	566	SvREFCNT_dec (req->self);
586	}	567	}
587		568
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	569	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	570	SvREFCNT_dec (req->sv2);
591	SvREFCNT_dec (req->callback);	571	SvREFCNT_dec (req->callback);
592		572
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	573	Safefree (req);
597	}	574	}
598		575
599	static void req_cancel_subs (aio_req grp)	576	static void req_cancel_subs (aio_req grp)
600	{	577	{
601	aio_req sub;	578	aio_req sub;
602		579
603	if (grp->type != REQ_GROUP)	580	if (grp->type != EIO_GROUP)
604	return;	581	return;
605		582
606	SvREFCNT_dec (grp->sv2);	583	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	584	grp->sv2 = 0;
608		585
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	586	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	587	}
612		588
613	static void req_cancel (aio_req req)	589	static void
		590	create_respipe (void)
614	{	591	{
615	req->flags |= FLAG_CANCELLED;	592	if (s_epipe_renew (&respipe))
616		593	croak ("IO::AIO: unable to initialize result pipe");
617	req_cancel_subs (req);
618	}	594	}
619		595
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 ()	596	static void poll_wait (void)
730	{	597	{
731	fd_set rfd;
732
733	while (nreqs)	598	while (eio_nreqs ())
734	{	599	{
735	int size;	600	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	601
		602	X_LOCK (reslock);
737	size = res_queue.size;	603	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	604	X_UNLOCK (reslock);
739		605
740	if (size)	606	if (size)
741	return;	607	return;
742		608
743	maybe_start_thread ();	609	etp_maybe_start_thread ();
744		610
745	FD_ZERO(&rfd);	611	s_epipe_wait (&respipe);
746	FD_SET(respipe [0], &rfd);
747
748	select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	612	}
750	}	613	}
751		614
752	static int poll_cb ()	615	static int poll_cb (void)
753	{	616	{
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 (;;)	617	for (;;)
767	{	618	{
768	for (;;)	619	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		620
772	LOCK (reslock);	621	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);	622	croak (0);
807	}
808		623
809	count++;	624	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	625	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		626
829	poll_wait ();	627	poll_wait ();
830
831	++maxreqs;
832	}	628	}
833
834	unblock_sig ();
835	return count;
836	}	629	}
837		630
838	static void create_pipe ()	631	static void atfork_child (void)
839	{	632	{
840	if (pipe (respipe))	633	create_respipe ();
841	croak ("unable to initialize result pipe");
842
843	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844	croak ("cannot set result pipe to nonblocking mode");
845
846	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847	croak ("cannot set result pipe to nonblocking mode");
848	}	634	}
849		635
850	/*****************************************************************************/	636	/*****************************************************************************/
851	/* work around various missing functions */
852		637
853	#if !HAVE_PREADWRITE	638	#if !_POSIX_MAPPED_FILES
854	# define pread aio_pread	639	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
855	# define pwrite aio_pwrite	640	# define munmap(addr,length) (errno = ENOSYS, -1)
856		641	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
857	/*	642	# define PROT_NONE 0
858	* make our pread/pwrite safe against themselves, but not against	643	# define PROT_WRITE 0
859	* normal read/write by using a mutex. slows down execution a lot,	644	# define MAP_PRIVATE 0
860	* but that's your problem, not mine.	645	# define MAP_SHARED 0
861	*/	646	# define MAP_FIXED 0
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	647	#endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000		648
1001	if (res < 0	649	#define MMAP_MAGIC PERL_MAGIC_ext
1002	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003	#if __solaris
1004	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005	#endif
1006	)
1007	)
1008	{
1009	/* emulate sendfile. this is a major pain in the ass */
1010	dBUF;
1011		650
1012	res = 0;	651	static int
		652	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		653	{
		654	int old_errno = errno;
		655	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		656	errno = old_errno;
1013		657
1014	while (count)	658	mg->mg_obj = 0; /* just in case */
1015	{
1016	ssize_t cnt;
1017
1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019		659
1020	if (cnt <= 0)	660	SvREADONLY_off (sv);
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025		661
1026	cnt = write (ofd, aio_buf, cnt);	662	if (SvPVX (sv) != mg->mg_ptr)
		663	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1027		664
1028	if (cnt <= 0)	665	SvCUR_set (sv, 0);
1029	{	666	SvPVX (sv) = 0;
1030	if (cnt && !res) res = -1;	667	SvOK_off (sv);
1031	break;
1032	}
1033		668
1034	offset += cnt;
1035	res += cnt;
1036	count -= cnt;
1037	}
1038	}
1039
1040	return res;	669	return 0;
1041	}	670	}
1042		671
1043	/* read a full directory */	672	static MGVTBL mmap_vtbl = {
1044	static void scandir_ (aio_req req, worker *self)	673	0, 0, 0, 0, mmap_free
1045	{	674	};
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		675
1105	/*****************************************************************************/	676	/*****************************************************************************/
1106		677
1107	static void *aio_proc (void *thr_arg)	678	static SV *
		679	get_cb (SV *cb_sv)
1108	{	680	{
1109	aio_req req;	681	SvGETMAGIC (cb_sv);
1110	struct timespec ts;	682	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1111	worker *self = (worker *)thr_arg;
1112
1113	/* try to distribute timeouts somewhat evenly */
1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115	* (1000000000UL / 1024UL);
1116
1117	for (;;)
1118	{
1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121	LOCK (reqlock);
1122
1123	for (;;)
1124	{
1125	self->req = req = reqq_shift (&req_queue);
1126
1127	if (req)
1128	break;
1129
1130	++idle;
1131
1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133	== ETIMEDOUT)
1134	{
1135	if (idle > max_idle)
1136	{
1137	--idle;
1138	UNLOCK (reqlock);
1139	LOCK (wrklock);
1140	--started;
1141	UNLOCK (wrklock);
1142	goto quit;
1143	}
1144
1145	/* we are allowed to idle, so do so without any timeout */
1146	pthread_cond_wait (&reqwait, &reqlock);
1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148	}
1149
1150	--idle;
1151	}
1152
1153	--nready;
1154
1155	UNLOCK (reqlock);
1156
1157	errno = 0; /* strictly unnecessary */
1158
1159	if (!(req->flags & FLAG_CANCELLED))
1160	switch (req->type)
1161	{
1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173	case REQ_CLOSE: req->result = close (req->int1); break;
1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1177	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1178	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1179	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1180	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1181
1182	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1183	case REQ_FSYNC: req->result = fsync (req->int1); break;
1184	case REQ_READDIR: scandir_ (req, self); break;
1185
1186	case REQ_BUSY:
1187	{
1188	struct timeval tv;
1189
1190	tv.tv_sec = req->int1;
1191	tv.tv_usec = req->int2;
1192
1193	req->result = select (0, 0, 0, 0, &tv);
1194	}
1195
1196	case REQ_GROUP:
1197	case REQ_NOP:
1198	break;
1199
1200	case REQ_QUIT:
1201	goto quit;
1202
1203	default:
1204	req->result = ENOSYS;
1205	break;
1206	}
1207
1208	req->errorno = errno;
1209
1210	LOCK (reslock);
1211
1212	++npending;
1213
1214	if (!reqq_push (&res_queue, req))
1215	{
1216	/* write a dummy byte to the pipe so fh becomes ready */
1217	write (respipe [1], &respipe, 1);
1218
1219	/* optionally signal the main thread asynchronously */
1220	if (main_sig)
1221	pthread_kill (main_tid, main_sig);
1222	}
1223
1224	self->req = 0;
1225	worker_clear (self);
1226
1227	UNLOCK (reslock);
1228	}
1229
1230	quit:
1231	LOCK (wrklock);
1232	worker_free (self);
1233	UNLOCK (wrklock);
1234
1235	return 0;
1236	}
1237
1238	/*****************************************************************************/
1239
1240	static void atfork_prepare (void)
1241	{
1242	LOCK (wrklock);
1243	LOCK (reqlock);
1244	LOCK (reslock);
1245	#if !HAVE_PREADWRITE
1246	LOCK (preadwritelock);
1247	#endif
1248	#if !HAVE_READDIR_R
1249	LOCK (readdirlock);
1250	#endif
1251	}
1252
1253	static void atfork_parent (void)
1254	{
1255	#if !HAVE_READDIR_R
1256	UNLOCK (readdirlock);
1257	#endif
1258	#if !HAVE_PREADWRITE
1259	UNLOCK (preadwritelock);
1260	#endif
1261	UNLOCK (reslock);
1262	UNLOCK (reqlock);
1263	UNLOCK (wrklock);
1264	}
1265
1266	static void atfork_child (void)
1267	{
1268	aio_req prv;
1269
1270	while (prv = reqq_shift (&req_queue))
1271	req_free (prv);
1272
1273	while (prv = reqq_shift (&res_queue))
1274	req_free (prv);
1275
1276	while (wrk_first.next != &wrk_first)
1277	{
1278	worker *wrk = wrk_first.next;
1279
1280	if (wrk->req)
1281	req_free (wrk->req);
1282
1283	worker_clear (wrk);
1284	worker_free (wrk);
1285	}
1286
1287	started = 0;
1288	idle = 0;
1289	nreqs = 0;
1290	nready = 0;
1291	npending = 0;
1292
1293	close (respipe [0]);
1294	close (respipe [1]);
1295	create_pipe ();
1296
1297	atfork_parent ();
1298	}	683	}
1299		684
1300	#define dREQ \	685	#define dREQ \
		686	SV *cb_cv; \
1301	aio_req req; \	687	aio_req req; \
1302	int req_pri = next_pri; \	688	int req_pri = next_pri; \
1303	next_pri = DEFAULT_PRI + PRI_BIAS; \	689	next_pri = EIO_PRI_DEFAULT; \
1304	\	690	\
1305	if (SvOK (callback) && !SvROK (callback)) \	691	cb_cv = get_cb (callback); \
1306	croak ("callback must be undef or of reference type"); \
1307	\	692	\
1308	Newz (0, req, 1, aio_cb); \	693	Newz (0, req, 1, eio_req); \
1309	if (!req) \	694	if (!req) \
1310	croak ("out of memory during aio_req allocation"); \	695	croak ("out of memory during eio_req allocation"); \
1311	\	696	\
1312	req->callback = newSVsv (callback); \	697	req->callback = SvREFCNT_inc (cb_cv); \
1313	req->pri = req_pri	698	req->pri = req_pri
1314		699
1315	#define REQ_SEND \	700	#define REQ_SEND \
		701	PUTBACK; \
1316	req_send (req); \	702	req_submit (req); \
		703	SPAGAIN; \
1317	\	704	\
1318	if (GIMME_V != G_VOID) \	705	if (GIMME_V != G_VOID) \
1319	XPUSHs (req_sv (req, AIO_REQ_KLASS));	706	XPUSHs (req_sv (req, aio_req_stash));
1320		707
1321	MODULE = IO::AIO PACKAGE = IO::AIO	708	MODULE = IO::AIO PACKAGE = IO::AIO
1322		709
1323	PROTOTYPES: ENABLE	710	PROTOTYPES: ENABLE
1324		711
1325	BOOT:	712	BOOT:
1326	{	713	{
		714	static const struct {
		715	const char *name;
		716	IV iv;
		717	} *civ, const_iv[] = {
		718	# define const_niv(name, value) { # name, (IV) value },
		719	# define const_iv(name) { # name, (IV) name },
		720	# define const_eio(name) { # name, (IV) EIO_ ## name },
		721	const_iv (EXDEV)
		722	const_iv (ENOSYS)
		723	const_iv (O_RDONLY)
		724	const_iv (O_WRONLY)
		725	const_iv (O_RDWR)
		726	const_iv (O_CREAT)
		727	const_iv (O_TRUNC)
		728	const_iv (O_EXCL)
		729	const_iv (O_APPEND)
		730	#ifndef _WIN32
		731	const_iv (S_IFIFO)
		732	#endif
		733	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		734	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		735	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		736	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		737	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		738	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		739
		740	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		741	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		742	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		743	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		744	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		745
		746	const_iv (ST_RDONLY)
		747	const_iv (ST_NOSUID)
		748	const_iv (ST_NODEV)
		749	const_iv (ST_NOEXEC)
		750	const_iv (ST_SYNCHRONOUS)
		751	const_iv (ST_MANDLOCK)
		752	const_iv (ST_WRITE)
		753	const_iv (ST_APPEND)
		754	const_iv (ST_IMMUTABLE)
		755	const_iv (ST_NOATIME)
		756	const_iv (ST_NODIRATIME)
		757	const_iv (ST_RELATIME)
		758
		759	const_iv (PROT_NONE)
		760	const_iv (PROT_EXEC)
		761	const_iv (PROT_READ)
		762	const_iv (PROT_WRITE)
		763
		764	/*const_iv (MAP_FIXED)*/
		765	const_iv (MAP_PRIVATE)
		766	const_iv (MAP_SHARED)
		767	const_iv (MAP_ANONYMOUS)
		768
		769	/* linuxish */
		770	const_iv (MAP_HUGETLB)
		771	const_iv (MAP_LOCKED)
		772	const_iv (MAP_NORESERVE)
		773	const_iv (MAP_POPULATE)
		774	const_iv (MAP_NONBLOCK)
		775
		776	const_eio (MCL_FUTURE)
		777	const_eio (MCL_CURRENT)
		778
		779	const_eio (MS_ASYNC)
		780	const_eio (MS_INVALIDATE)
		781	const_eio (MS_SYNC)
		782
		783	const_eio (MT_MODIFY)
		784
		785	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		786	const_eio (SYNC_FILE_RANGE_WRITE)
		787	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		788
		789	const_eio (READDIR_DENTS)
		790	const_eio (READDIR_DIRS_FIRST)
		791	const_eio (READDIR_STAT_ORDER)
		792	const_eio (READDIR_FOUND_UNKNOWN)
		793
		794	const_eio (DT_UNKNOWN)
		795	const_eio (DT_FIFO)
		796	const_eio (DT_CHR)
		797	const_eio (DT_DIR)
		798	const_eio (DT_BLK)
		799	const_eio (DT_REG)
		800	const_eio (DT_LNK)
		801	const_eio (DT_SOCK)
		802	const_eio (DT_WHT)
		803	};
		804
1327	HV *stash = gv_stashpv ("IO::AIO", 1);	805	aio_stash = gv_stashpv ("IO::AIO" , 1);
		806	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		807	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1328		808
1329	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	809	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1330	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	810	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1331	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1332	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1333	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1334	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1335	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1336		811
		812	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		813
1337	create_pipe ();	814	create_respipe ();
1338	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	815
		816	if (eio_init (want_poll, done_poll) < 0)
		817	croak ("IO::AIO: unable to initialise eio library");
		818
		819	/* atfork child called in fifo order, so before eio's handler */
		820	X_THREAD_ATFORK (0, 0, atfork_child);
1339	}	821	}
1340		822
1341	void	823	void
1342	max_poll_reqs (int nreqs)	824	max_poll_reqs (int nreqs)
1343	PROTOTYPE: $	825	PROTOTYPE: $
1344	CODE:	826	CODE:
1345	max_poll_reqs = nreqs;	827	eio_set_max_poll_reqs (nreqs);
1346		828
1347	void	829	void
1348	max_poll_time (double nseconds)	830	max_poll_time (double nseconds)
1349	PROTOTYPE: $	831	PROTOTYPE: $
1350	CODE:	832	CODE:
1351	max_poll_time = nseconds * AIO_TICKS;	833	eio_set_max_poll_time (nseconds);
1352		834
1353	void	835	void
1354	min_parallel (int nthreads)	836	min_parallel (int nthreads)
1355	PROTOTYPE: $	837	PROTOTYPE: $
		838	CODE:
		839	eio_set_min_parallel (nthreads);
1356		840
1357	void	841	void
1358	max_parallel (int nthreads)	842	max_parallel (int nthreads)
1359	PROTOTYPE: $	843	PROTOTYPE: $
		844	CODE:
		845	eio_set_max_parallel (nthreads);
1360		846
1361	void	847	void
1362	max_idle (int nthreads)	848	max_idle (int nthreads)
1363	PROTOTYPE: $	849	PROTOTYPE: $
1364	CODE:	850	CODE:
1365	set_max_idle (nthreads);	851	eio_set_max_idle (nthreads);
1366		852
1367	int	853	void
1368	max_outstanding (int maxreqs)	854	max_outstanding (int maxreqs)
1369	PROTOTYPE: $	855	PROTOTYPE: $
1370	CODE:	856	CODE:
1371	RETVAL = max_outstanding;
1372	max_outstanding = maxreqs;	857	max_outstanding = maxreqs;
1373	OUTPUT:
1374	RETVAL
1375		858
1376	void	859	void
1377	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	860	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1378	SV8 * pathname
1379	int flags
1380	int mode
1381	SV * callback
1382	PROTOTYPE: $$$;$
1383	PPCODE:	861	PPCODE:
1384	{	862	{
1385	dREQ;	863	dREQ;
1386		864
1387	req->type = REQ_OPEN;	865	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	866	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	867	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	868	req->int1 = flags;
1391	req->mode = mode;	869	req->int2 = mode;
1392		870
1393	REQ_SEND;	871	REQ_SEND;
1394	}	872	}
1395		873
1396	void	874	void
1397	aio_close (fh,callback=&PL_sv_undef)	875	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	SV * fh
1399	SV * callback
1400	PROTOTYPE: $;$
1401	ALIAS:	876	ALIAS:
1402	aio_close = REQ_CLOSE
1403	aio_fsync = REQ_FSYNC	877	aio_fsync = EIO_FSYNC
1404	aio_fdatasync = REQ_FDATASYNC	878	aio_fdatasync = EIO_FDATASYNC
1405	PPCODE:	879	PPCODE:
1406	{	880	{
		881	int fd = s_fileno_croak (fh, 0);
1407	dREQ;	882	dREQ;
1408		883
1409	req->type = ix;	884	req->type = ix;
1410	req->fh = newSVsv (fh);	885	req->sv1 = newSVsv (fh);
1411	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	886	req->int1 = fd;
1412		887
1413	REQ_SEND (req);	888	REQ_SEND (req);
1414	}	889	}
1415		890
1416	void	891	void
		892	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		893	PPCODE:
		894	{
		895	int fd = s_fileno_croak (fh, 0);
		896	dREQ;
		897
		898	req->type = EIO_SYNC_FILE_RANGE;
		899	req->sv1 = newSVsv (fh);
		900	req->int1 = fd;
		901	req->offs = offset;
		902	req->size = nbytes;
		903	req->int2 = flags;
		904
		905	REQ_SEND (req);
		906	}
		907
		908	void
		909	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		910	PPCODE:
		911	{
		912	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		913	int fd = s_fileno_croak (fh, 0);
		914	dREQ;
		915
		916	if (close_pipe < 0)
		917	{
		918	int pipefd [2];
		919
		920	if (pipe (pipefd) < 0
		921	|| close (pipefd [1]) < 0
		922	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		923	abort (); /*D*/
		924
		925	close_pipe = pipefd [0];
		926	}
		927
		928	req->type = EIO_DUP2;
		929	req->int1 = close_pipe;
		930	req->sv2 = newSVsv (fh);
		931	req->int2 = fd;
		932
		933	REQ_SEND (req);
		934	}
		935
		936	void
1417	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	937	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1418	SV * fh
1419	UV offset
1420	UV length
1421	SV8 * data
1422	UV dataoffset
1423	SV * callback
1424	ALIAS:	938	ALIAS:
1425	aio_read = REQ_READ	939	aio_read = EIO_READ
1426	aio_write = REQ_WRITE	940	aio_write = EIO_WRITE
1427	PROTOTYPE: $$$$$;$
1428	PPCODE:	941	PPCODE:
1429	{	942	{
1430	STRLEN svlen;	943	STRLEN svlen;
		944	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1431	char *svptr = SvPVbyte (data, svlen);	945	char *svptr = SvPVbyte (data, svlen);
1432		946	UV len = SvUV (length);
1433	SvUPGRADE (data, SVt_PV);
1434	SvPOK_on (data);
1435		947
1436	if (dataoffset < 0)	948	if (dataoffset < 0)
1437	dataoffset += svlen;	949	dataoffset += svlen;
1438		950
1439	if (dataoffset < 0 || dataoffset > svlen)	951	if (dataoffset < 0 || dataoffset > svlen)
1440	croak ("data offset outside of string");	952	croak ("dataoffset outside of data scalar");
1441		953
1442	if (ix == REQ_WRITE)	954	if (ix == EIO_WRITE)
1443	{	955	{
1444	/* write: check length and adjust. */	956	/* write: check length and adjust. */
1445	if (length < 0 || length + dataoffset > svlen)	957	if (!SvOK (length) || len + dataoffset > svlen)
1446	length = svlen - dataoffset;	958	len = svlen - dataoffset;
1447	}	959	}
1448	else	960	else
1449	{	961	{
1450	/* read: grow scalar as necessary */	962	/* read: check type and grow scalar as necessary */
		963	SvUPGRADE (data, SVt_PV);
1451	svptr = SvGROW (data, length + dataoffset);	964	svptr = SvGROW (data, len + dataoffset + 1);
1452	}	965	}
1453
1454	if (length < 0)
1455	croak ("length must not be negative");
1456		966
1457	{	967	{
1458	dREQ;	968	dREQ;
1459		969
1460	req->type = ix;	970	req->type = ix;
1461	req->fh = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
1462	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	972	req->int1 = fd;
1463	: IoOFP (sv_2io (fh)));	973	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1464	req->offs = offset;
1465	req->size = length;	974	req->size = len;
1466	req->sv1 = SvREFCNT_inc (data);	975	req->sv2 = SvREFCNT_inc (data);
1467	req->ptr1 = (char *)svptr + dataoffset;	976	req->ptr2 = (char *)svptr + dataoffset;
1468	req->stroffset = dataoffset;	977	req->stroffset = dataoffset;
1469		978
1470	if (!SvREADONLY (data))	979	if (!SvREADONLY (data))
1471	{	980	{
1472	SvREADONLY_on (data);	981	SvREADONLY_on (data);
1473	req->flags |= FLAG_SV1_RO_OFF;	982	req->flags |= FLAG_SV2_RO_OFF;
1474	}	983	}
1475		984
1476	REQ_SEND;	985	REQ_SEND;
1477	}	986	}
1478	}	987	}
1479		988
1480	void	989	void
1481	aio_readlink (path,callback=&PL_sv_undef)	990	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1482	SV8 * path
1483	SV * callback
1484	PROTOTYPE: $$;$
1485	PPCODE:	991	PPCODE:
1486	{	992	{
1487	SV *data;	993	SV *data;
1488	dREQ;	994	dREQ;
1489		995
1490	data = newSV (NAME_MAX);
1491	SvPOK_on (data);
1492
1493	req->type = REQ_READLINK;	996	req->type = EIO_READLINK;
1494	req->fh = newSVsv (path);	997	req->sv1 = newSVsv (path);
1495	req->ptr2 = SvPVbyte_nolen (req->fh);	998	req->ptr1 = SvPVbyte_nolen (req->sv1);
1496	req->sv1 = data;
1497	req->ptr1 = SvPVbyte_nolen (data);
1498		999
1499	REQ_SEND;	1000	REQ_SEND;
1500	}	1001	}
1501		1002
1502	void	1003	void
1503	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1004	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1504	SV * out_fh
1505	SV * in_fh
1506	UV in_offset
1507	UV length
1508	SV * callback
1509	PROTOTYPE: $$$$;$
1510	PPCODE:	1005	PPCODE:
1511	{	1006	{
		1007	int ifd = s_fileno_croak (in_fh , 0);
		1008	int ofd = s_fileno_croak (out_fh, 1);
1512	dREQ;	1009	dREQ;
1513		1010
1514	req->type = REQ_SENDFILE;	1011	req->type = EIO_SENDFILE;
1515	req->fh = newSVsv (out_fh);	1012	req->sv1 = newSVsv (out_fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1013	req->int1 = ofd;
1517	req->sv2 = newSVsv (in_fh);	1014	req->sv2 = newSVsv (in_fh);
1518	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1015	req->int2 = ifd;
1519	req->offs = in_offset;	1016	req->offs = in_offset;
1520	req->size = length;	1017	req->size = length;
1521		1018
1522	REQ_SEND;	1019	REQ_SEND;
1523	}	1020	}
1524		1021
1525	void	1022	void
1526	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1023	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1527	SV * fh
1528	UV offset
1529	IV length
1530	SV * callback
1531	PROTOTYPE: $$$;$
1532	PPCODE:	1024	PPCODE:
1533	{	1025	{
		1026	int fd = s_fileno_croak (fh, 0);
1534	dREQ;	1027	dREQ;
1535		1028
1536	req->type = REQ_READAHEAD;	1029	req->type = EIO_READAHEAD;
1537	req->fh = newSVsv (fh);	1030	req->sv1 = newSVsv (fh);
1538	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1031	req->int1 = fd;
1539	req->offs = offset;	1032	req->offs = offset;
1540	req->size = length;	1033	req->size = length;
1541		1034
1542	REQ_SEND;	1035	REQ_SEND;
1543	}	1036	}
1544		1037
1545	void	1038	void
1546	aio_stat (fh_or_path,callback=&PL_sv_undef)	1039	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1547	SV8 * fh_or_path
1548	SV * callback
1549	ALIAS:	1040	ALIAS:
1550	aio_stat = REQ_STAT	1041	aio_stat = EIO_STAT
1551	aio_lstat = REQ_LSTAT	1042	aio_lstat = EIO_LSTAT
		1043	aio_statvfs = EIO_STATVFS
1552	PPCODE:	1044	PPCODE:
1553	{	1045	{
1554	dREQ;	1046	dREQ;
1555		1047
1556	req->ptr2 = malloc (sizeof (Stat_t));	1048	req->sv1 = newSVsv (fh_or_path);
1557	if (!req->ptr2)
1558	{
1559	req_free (req);
1560	croak ("out of memory during aio_stat statdata allocation");
1561	}
1562		1049
1563	req->flags |= FLAG_PTR2_FREE;	1050	if (SvPOK (req->sv1))
1564
1565	if (SvPOK (fh_or_path))
1566	{	1051	{
1567	req->type = ix;	1052	req->type = ix;
1568	req->sv1 = newSVsv (fh_or_path);
1569	req->ptr1 = SvPVbyte_nolen (req->sv1);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1570	}	1054	}
1571	else	1055	else
1572	{	1056	{
1573	req->type = REQ_FSTAT;	1057	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1574	req->fh = newSVsv (fh_or_path);
1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1058	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1576	}	1059	}
1577		1060
1578	REQ_SEND;	1061	REQ_SEND;
1579	}	1062	}
1580		1063
1581	void	1064	void
		1065	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1066	PPCODE:
		1067	{
		1068	dREQ;
		1069
		1070	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1071	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1072	req->sv1 = newSVsv (fh_or_path);
		1073
		1074	if (SvPOK (req->sv1))
		1075	{
		1076	req->type = EIO_UTIME;
		1077	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1078	}
		1079	else
		1080	{
		1081	req->type = EIO_FUTIME;
		1082	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1083	}
		1084
		1085	REQ_SEND;
		1086	}
		1087
		1088	void
		1089	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1090	PPCODE:
		1091	{
		1092	dREQ;
		1093
		1094	req->sv1 = newSVsv (fh_or_path);
		1095	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1096
		1097	if (SvPOK (req->sv1))
		1098	{
		1099	req->type = EIO_TRUNCATE;
		1100	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1101	}
		1102	else
		1103	{
		1104	req->type = EIO_FTRUNCATE;
		1105	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1106	}
		1107
		1108	REQ_SEND;
		1109	}
		1110
		1111	void
		1112	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1113	ALIAS:
		1114	aio_chmod = EIO_CHMOD
		1115	aio_mkdir = EIO_MKDIR
		1116	PPCODE:
		1117	{
		1118	dREQ;
		1119
		1120	req->int2 = mode;
		1121	req->sv1 = newSVsv (fh_or_path);
		1122
		1123	if (SvPOK (req->sv1))
		1124	{
		1125	req->type = ix;
		1126	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1127	}
		1128	else
		1129	{
		1130	req->type = EIO_FCHMOD;
		1131	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1132	}
		1133
		1134	REQ_SEND;
		1135	}
		1136
		1137	void
		1138	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1139	PPCODE:
		1140	{
		1141	dREQ;
		1142
		1143	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1144	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1145	req->sv1 = newSVsv (fh_or_path);
		1146
		1147	if (SvPOK (req->sv1))
		1148	{
		1149	req->type = EIO_CHOWN;
		1150	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1151	}
		1152	else
		1153	{
		1154	req->type = EIO_FCHOWN;
		1155	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1156	}
		1157
		1158	REQ_SEND;
		1159	}
		1160
		1161	void
		1162	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1163	PPCODE:
		1164	{
		1165	dREQ;
		1166
		1167	req->type = EIO_READDIR;
		1168	req->sv1 = newSVsv (pathname);
		1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1170	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1171
		1172	if (flags & EIO_READDIR_DENTS)
		1173	req->int1 |= EIO_READDIR_CUSTOM2;
		1174
		1175	REQ_SEND;
		1176	}
		1177
		1178	void
1582	aio_unlink (pathname,callback=&PL_sv_undef)	1179	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1583	SV8 * pathname
1584	SV * callback
1585	ALIAS:	1180	ALIAS:
1586	aio_unlink = REQ_UNLINK	1181	aio_unlink = EIO_UNLINK
1587	aio_rmdir = REQ_RMDIR	1182	aio_rmdir = EIO_RMDIR
1588	aio_readdir = REQ_READDIR	1183	aio_readdir = EIO_READDIR
1589	PPCODE:	1184	PPCODE:
1590	{	1185	{
1591	dREQ;	1186	dREQ;
1592		1187
1593	req->type = ix;	1188	req->type = ix;
…		…
1596		1191
1597	REQ_SEND;	1192	REQ_SEND;
1598	}	1193	}
1599		1194
1600	void	1195	void
1601	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1196	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1602	SV8 * oldpath
1603	SV8 * newpath
1604	SV * callback
1605	ALIAS:	1197	ALIAS:
1606	aio_link = REQ_LINK	1198	aio_link = EIO_LINK
1607	aio_symlink = REQ_SYMLINK	1199	aio_symlink = EIO_SYMLINK
1608	aio_rename = REQ_RENAME	1200	aio_rename = EIO_RENAME
1609	PPCODE:	1201	PPCODE:
1610	{	1202	{
1611	dREQ;	1203	dREQ;
1612		1204
1613	req->type = ix;	1205	req->type = ix;
1614	req->fh = newSVsv (oldpath);	1206	req->sv1 = newSVsv (oldpath);
1615	req->ptr2 = SvPVbyte_nolen (req->fh);
1616	req->sv1 = newSVsv (newpath);
1617	req->ptr1 = SvPVbyte_nolen (req->sv1);	1207	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1208	req->sv2 = newSVsv (newpath);
		1209	req->ptr2 = SvPVbyte_nolen (req->sv2);
1618		1210
1619	REQ_SEND;	1211	REQ_SEND;
1620	}	1212	}
1621		1213
1622	void	1214	void
1623	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1215	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1624	SV8 * pathname
1625	SV * callback
1626	UV mode
1627	UV dev
1628	PPCODE:	1216	PPCODE:
1629	{	1217	{
1630	dREQ;	1218	dREQ;
1631		1219
1632	req->type = REQ_MKNOD;	1220	req->type = EIO_MKNOD;
1633	req->sv1 = newSVsv (pathname);	1221	req->sv1 = newSVsv (pathname);
1634	req->ptr1 = SvPVbyte_nolen (req->sv1);	1222	req->ptr1 = SvPVbyte_nolen (req->sv1);
1635	req->mode = (mode_t)mode;	1223	req->int2 = (mode_t)mode;
1636	req->offs = dev;	1224	req->offs = dev;
1637		1225
1638	REQ_SEND;	1226	REQ_SEND;
1639	}	1227	}
1640		1228
1641	void	1229	void
		1230	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1231	ALIAS:
		1232	aio_mtouch = EIO_MTOUCH
		1233	aio_msync = EIO_MSYNC
		1234	PPCODE:
		1235	{
		1236	STRLEN svlen;
		1237	char *svptr = SvPVbyte (data, svlen);
		1238	UV len = SvUV (length);
		1239
		1240	if (offset < 0)
		1241	offset += svlen;
		1242
		1243	if (offset < 0 || offset > svlen)
		1244	croak ("offset outside of scalar");
		1245
		1246	if (!SvOK (length) || len + offset > svlen)
		1247	len = svlen - offset;
		1248
		1249	{
		1250	dREQ;
		1251
		1252	req->type = ix;
		1253	req->sv2 = SvREFCNT_inc (data);
		1254	req->ptr2 = (char *)svptr + offset;
		1255	req->size = len;
		1256	req->int1 = flags;
		1257
		1258	REQ_SEND;
		1259	}
		1260	}
		1261
		1262	void
		1263	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1264	PPCODE:
		1265	{
		1266	STRLEN svlen;
		1267	char *svptr = SvPVbyte (data, svlen);
		1268	UV len = SvUV (length);
		1269
		1270	if (offset < 0)
		1271	offset += svlen;
		1272
		1273	if (offset < 0 || offset > svlen)
		1274	croak ("offset outside of scalar");
		1275
		1276	if (!SvOK (length) || len + offset > svlen)
		1277	len = svlen - offset;
		1278
		1279	{
		1280	dREQ;
		1281
		1282	req->type = EIO_MLOCK;
		1283	req->sv2 = SvREFCNT_inc (data);
		1284	req->ptr2 = (char *)svptr + offset;
		1285	req->size = len;
		1286
		1287	REQ_SEND;
		1288	}
		1289	}
		1290
		1291	void
		1292	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1293	PPCODE:
		1294	{
		1295	dREQ;
		1296
		1297	req->type = EIO_MLOCKALL;
		1298	req->int1 = flags;
		1299
		1300	REQ_SEND;
		1301	}
		1302
		1303	void
1642	aio_busy (delay,callback=&PL_sv_undef)	1304	aio_busy (double delay, SV *callback=&PL_sv_undef)
1643	double delay
1644	SV * callback
1645	PPCODE:	1305	PPCODE:
1646	{	1306	{
1647	dREQ;	1307	dREQ;
1648		1308
1649	req->type = REQ_BUSY;	1309	req->type = EIO_BUSY;
1650	req->int1 = delay < 0. ? 0 : delay;	1310	req->nv1 = delay < 0. ? 0. : delay;
1651	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1652		1311
1653	REQ_SEND;	1312	REQ_SEND;
1654	}	1313	}
1655		1314
1656	void	1315	void
1657	aio_group (callback=&PL_sv_undef)	1316	aio_group (SV *callback=&PL_sv_undef)
1658	SV * callback
1659	PROTOTYPE: ;$
1660	PPCODE:	1317	PPCODE:
1661	{	1318	{
1662	dREQ;	1319	dREQ;
1663		1320
1664	req->type = REQ_GROUP;	1321	req->type = EIO_GROUP;
1665		1322
1666	req_send (req);	1323	req_submit (req);
1667	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1324	XPUSHs (req_sv (req, aio_grp_stash));
1668	}	1325	}
1669		1326
1670	void	1327	void
1671	aio_nop (callback=&PL_sv_undef)	1328	aio_nop (SV *callback=&PL_sv_undef)
1672	SV * callback	1329	ALIAS:
		1330	aio_nop = EIO_NOP
		1331	aio_sync = EIO_SYNC
1673	PPCODE:	1332	PPCODE:
1674	{	1333	{
1675	dREQ;	1334	dREQ;
1676		1335
1677	req->type = REQ_NOP;	1336	req->type = ix;
1678		1337
1679	REQ_SEND;	1338	REQ_SEND;
1680	}	1339	}
1681		1340
1682	int	1341	int
1683	aioreq_pri (int pri = 0)	1342	aioreq_pri (int pri = 0)
1684	PROTOTYPE: ;$
1685	CODE:	1343	CODE:
1686	RETVAL = next_pri - PRI_BIAS;	1344	RETVAL = next_pri;
1687	if (items > 0)	1345	if (items > 0)
1688	{	1346	{
1689	if (pri < PRI_MIN) pri = PRI_MIN;	1347	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1690	if (pri > PRI_MAX) pri = PRI_MAX;	1348	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1691	next_pri = pri + PRI_BIAS;	1349	next_pri = pri;
1692	}	1350	}
1693	OUTPUT:	1351	OUTPUT:
1694	RETVAL	1352	RETVAL
1695		1353
1696	void	1354	void
1697	aioreq_nice (int nice = 0)	1355	aioreq_nice (int nice = 0)
1698	CODE:	1356	CODE:
1699	nice = next_pri - nice;	1357	nice = next_pri - nice;
1700	if (nice < PRI_MIN) nice = PRI_MIN;	1358	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1701	if (nice > PRI_MAX) nice = PRI_MAX;	1359	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1702	next_pri = nice + PRI_BIAS;	1360	next_pri = nice;
1703		1361
1704	void	1362	void
1705	flush ()	1363	flush ()
1706	PROTOTYPE:
1707	CODE:	1364	CODE:
1708	while (nreqs)	1365	while (eio_nreqs ())
1709	{	1366	{
1710	poll_wait ();	1367	poll_wait ();
1711	poll_cb ();	1368	poll_cb ();
1712	}	1369	}
1713		1370
1714	int	1371	int
1715	poll()	1372	poll ()
1716	PROTOTYPE:
1717	CODE:	1373	CODE:
1718	poll_wait ();	1374	poll_wait ();
1719	RETVAL = poll_cb ();	1375	RETVAL = poll_cb ();
1720	OUTPUT:	1376	OUTPUT:
1721	RETVAL	1377	RETVAL
1722		1378
1723	int	1379	int
1724	poll_fileno()	1380	poll_fileno ()
1725	PROTOTYPE:
1726	CODE:	1381	CODE:
1727	RETVAL = respipe [0];	1382	RETVAL = s_epipe_fd (&respipe);
1728	OUTPUT:	1383	OUTPUT:
1729	RETVAL	1384	RETVAL
1730		1385
1731	int	1386	int
1732	poll_cb(...)	1387	poll_cb (...)
1733	PROTOTYPE:	1388	PROTOTYPE:
1734	CODE:	1389	CODE:
1735	RETVAL = poll_cb ();	1390	RETVAL = poll_cb ();
1736	OUTPUT:	1391	OUTPUT:
1737	RETVAL	1392	RETVAL
1738		1393
1739	void	1394	void
1740	poll_wait()	1395	poll_wait ()
1741	PROTOTYPE:
1742	CODE:	1396	CODE:
1743	poll_wait ();	1397	poll_wait ();
1744		1398
1745	void
1746	setsig (int signum = SIGIO)
1747	PROTOTYPE: ;$
1748	CODE:
1749	{
1750	if (block_sig_level)
1751	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1752
1753	LOCK (reslock);
1754	main_tid = pthread_self ();
1755	main_sig = signum;
1756	UNLOCK (reslock);
1757
1758	if (main_sig && npending)
1759	pthread_kill (main_tid, main_sig);
1760	}
1761
1762	void
1763	aio_block (SV *cb)
1764	PROTOTYPE: &
1765	PPCODE:
1766	{
1767	int count;
1768
1769	block_sig ();
1770	PUSHMARK (SP);
1771	PUTBACK;
1772	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1773	SPAGAIN;
1774	unblock_sig ();
1775
1776	if (SvTRUE (ERRSV))
1777	croak (0);
1778
1779	XSRETURN (count);
1780	}
1781
1782	int	1399	int
1783	nreqs()	1400	nreqs ()
1784	PROTOTYPE:
1785	CODE:	1401	CODE:
1786	RETVAL = nreqs;	1402	RETVAL = eio_nreqs ();
1787	OUTPUT:	1403	OUTPUT:
1788	RETVAL	1404	RETVAL
1789		1405
1790	int	1406	int
1791	nready()	1407	nready ()
1792	PROTOTYPE:
1793	CODE:	1408	CODE:
1794	RETVAL = get_nready ();	1409	RETVAL = eio_nready ();
1795	OUTPUT:	1410	OUTPUT:
1796	RETVAL	1411	RETVAL
1797		1412
1798	int	1413	int
1799	npending()	1414	npending ()
1800	PROTOTYPE:
1801	CODE:	1415	CODE:
1802	RETVAL = get_npending ();	1416	RETVAL = eio_npending ();
1803	OUTPUT:	1417	OUTPUT:
1804	RETVAL	1418	RETVAL
1805		1419
1806	int	1420	int
1807	nthreads()	1421	nthreads ()
1808	PROTOTYPE:
1809	CODE:	1422	CODE:
1810	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1423	RETVAL = eio_nthreads ();
1811	RETVAL = started;
1812	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1813	OUTPUT:	1424	OUTPUT:
1814	RETVAL	1425	RETVAL
1815		1426
		1427	int
		1428	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1429	CODE:
		1430	RETVAL = posix_fadvise (fh, offset, length, advice);
		1431	OUTPUT:
		1432	RETVAL
		1433
		1434	ssize_t
		1435	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1436	CODE:
		1437	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1438	OUTPUT:
		1439	RETVAL
		1440
		1441	void
		1442	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1443	PPCODE:
		1444	sv_unmagic (scalar, MMAP_MAGIC);
		1445	{
		1446	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1447	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1448	if (addr == (void *)-1)
		1449	XSRETURN_NO;
		1450
		1451	sv_force_normal (scalar);
		1452
		1453	/* we store the length in mg_obj, as namlen is I32 :/ */
		1454	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1455	->mg_obj = (SV *)length;
		1456
		1457	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1458
		1459	if (!(prot & PROT_WRITE))
		1460	SvREADONLY_on (scalar);
		1461
		1462	if (SvLEN (scalar))
		1463	Safefree (SvPVX (scalar));
		1464
		1465	SvPVX (scalar) = (char *)addr;
		1466	SvCUR_set (scalar, length);
		1467	SvLEN_set (scalar, 0);
		1468	SvPOK_only (scalar);
		1469
		1470	XSRETURN_YES;
		1471	}
		1472
		1473	void
		1474	munmap (SV *scalar)
		1475	CODE:
		1476	sv_unmagic (scalar, MMAP_MAGIC);
		1477
		1478	int
		1479	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1480	ALIAS:
		1481	mprotect = 1
		1482	CODE:
		1483	{
		1484	STRLEN svlen;
		1485	void *addr = SvPVbyte (scalar, svlen);
		1486	size_t len = SvUV (length);
		1487
		1488	if (offset < 0)
		1489	offset += svlen;
		1490
		1491	if (offset < 0 || offset > svlen)
		1492	croak ("offset outside of scalar");
		1493
		1494	if (!SvOK (length) || len + offset > svlen)
		1495	len = svlen - offset;
		1496
		1497	addr = (void *)(((intptr_t)addr) + offset);
		1498	eio_page_align (&addr, &len);
		1499
		1500	switch (ix)
		1501	{
		1502	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1503	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1504	}
		1505	}
		1506	OUTPUT:
		1507	RETVAL
		1508
		1509	int
		1510	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1511	CODE:
		1512	{
		1513	STRLEN svlen;
		1514	void *addr = SvPVbyte (scalar, svlen);
		1515	size_t len = SvUV (length);
		1516
		1517	if (offset < 0)
		1518	offset += svlen;
		1519
		1520	if (offset < 0 || offset > svlen)
		1521	croak ("offset outside of scalar");
		1522
		1523	if (!SvOK (length) || len + offset > svlen)
		1524	len = svlen - offset;
		1525
		1526	addr = (void *)(((intptr_t)addr) + offset);
		1527	eio_page_align (&addr, &len);
		1528	#if _POSIX_MEMLOCK
		1529	RETVAL = munlock (addr, len);
		1530	#else
		1531	RETVAL = ((errno = ENOSYS), -1);
		1532	#endif
		1533	}
		1534	OUTPUT:
		1535	RETVAL
		1536
		1537	int
		1538	munlockall ()
		1539	CODE:
		1540	#if _POSIX_MEMLOCK
		1541	munlockall ();
		1542	#else
		1543	RETVAL = -1;
		1544	errno = ENOSYS;
		1545	#endif
		1546	OUTPUT:
		1547	RETVAL
		1548
		1549	void _on_next_submit (SV *cb)
		1550	CODE:
		1551	SvREFCNT_dec (on_next_submit);
		1552	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1553
1816	PROTOTYPES: DISABLE	1554	PROTOTYPES: DISABLE
1817		1555
1818	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1556	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1819		1557
1820	void	1558	void
1821	cancel (aio_req_ornot req)	1559	cancel (aio_req_ornot req)
1822	CODE:	1560	CODE:
1823	req_cancel (req);	1561	eio_cancel (req);
1824		1562
1825	void	1563	void
1826	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1564	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1827	CODE:	1565	PPCODE:
		1566	{
		1567	if (GIMME_V != G_VOID)
		1568	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1569
		1570	if (items > 1)
		1571	{
		1572	SV *cb_cv =get_cb (callback);
		1573
1828	SvREFCNT_dec (req->callback);	1574	SvREFCNT_dec (req->callback);
1829	req->callback = newSVsv (callback);	1575	req->callback = SvREFCNT_inc (cb_cv);
		1576	}
		1577	}
1830		1578
1831	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1579	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1832		1580
1833	void	1581	void
1834	add (aio_req grp, ...)	1582	add (aio_req grp, ...)
1835	PPCODE:	1583	PPCODE:
1836	{	1584	{
1837	int i;	1585	int i;
1838	aio_req req;
1839
1840	if (main_sig && !block_sig_level)
1841	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1842		1586
1843	if (grp->int1 == 2)	1587	if (grp->int1 == 2)
1844	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1588	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1845		1589
1846	for (i = 1; i < items; ++i )	1590	for (i = 1; i < items; ++i )
1847	{	1591	{
		1592	aio_req req;
		1593
1848	if (GIMME_V != G_VOID)	1594	if (GIMME_V != G_VOID)
1849	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1595	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1850		1596
1851	req = SvAIO_REQ (ST (i));	1597	req = SvAIO_REQ (ST (i));
1852		1598
1853	if (req)	1599	if (req)
1854	{	1600	eio_grp_add (grp, req);
1855	++grp->size;
1856	req->grp = grp;
1857
1858	req->grp_prev = 0;
1859	req->grp_next = grp->grp_first;
1860
1861	if (grp->grp_first)
1862	grp->grp_first->grp_prev = req;
1863
1864	grp->grp_first = req;
1865	}
1866	}	1601	}
1867	}	1602	}
1868		1603
1869	void	1604	void
1870	cancel_subs (aio_req_ornot req)	1605	cancel_subs (aio_req_ornot req)
…		…
1879	AV *av;	1614	AV *av;
1880		1615
1881	grp->errorno = errno;	1616	grp->errorno = errno;
1882		1617
1883	av = newAV ();	1618	av = newAV ();
		1619	av_extend (av, items - 1);
1884		1620
1885	for (i = 1; i < items; ++i )	1621	for (i = 1; i < items; ++i )
1886	av_push (av, newSVsv (ST (i)));	1622	av_push (av, newSVsv (ST (i)));
1887		1623
1888	SvREFCNT_dec (grp->sv1);	1624	SvREFCNT_dec (grp->sv1);
…		…
1895	grp->errorno = errorno;	1631	grp->errorno = errorno;
1896		1632
1897	void	1633	void
1898	limit (aio_req grp, int limit)	1634	limit (aio_req grp, int limit)
1899	CODE:	1635	CODE:
1900	grp->int2 = limit;	1636	eio_grp_limit (grp, limit);
1901	aio_grp_feed (grp);
1902		1637
1903	void	1638	void
1904	feed (aio_req grp, SV *callback=&PL_sv_undef)	1639	feed (aio_req grp, SV *callback=&PL_sv_undef)
1905	CODE:	1640	CODE:
1906	{	1641	{
1907	SvREFCNT_dec (grp->sv2);	1642	SvREFCNT_dec (grp->sv2);
1908	grp->sv2 = newSVsv (callback);	1643	grp->sv2 = newSVsv (callback);
		1644	grp->feed = aio_grp_feed;
1909		1645
1910	if (grp->int2 <= 0)	1646	if (grp->int2 <= 0)
1911	grp->int2 = 2;	1647	grp->int2 = 2;
1912		1648
1913	aio_grp_feed (grp);	1649	eio_grp_limit (grp, grp->int2);
1914	}	1650	}
1915		1651

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