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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.96 by root, Sat Dec 23 04:49:37 2006 UTC vs.
Revision 1.174 by root, Mon Nov 1 22:03:43 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/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 MAP_ANONYMOUS
		215	# ifdef MAP_ANON
		216	# define MAP_ANONYMOUS MAP_ANON
44	# else	217	# else
45	# error sendfile support requested but not available	218	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46	# endif	219	# endif
47	#endif	220	#endif
48		221	#ifndef MAP_HUGETLB
49	/* number of seconds after which idle threads exit */	222	# 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	223	#endif
		224	#ifndef MAP_LOCKED
		225	# define MAP_LOCKED 0
80	#endif	226	#endif
		227	#ifndef MAP_NORESERVE
		228	# define MAP_NORESERVE 0
		229	#endif
		230	#ifndef MAP_POPULATE
		231	# define MAP_POPULATE 0
		232	#endif
		233	#ifndef MAP_NONBLOCK
		234	# define MAP_NONBLOCK 0
		235	#endif
81		236
82	/* buffer size for various temporary buffers */	237	#ifndef PAGESIZE
83	#define AIO_BUFSIZE 65536	238	# define PAGESIZE sysconf (_SC_PAGESIZE)
		239	#endif
84		240
85	#define dBUF \	241	static int req_invoke (eio_req *req);
86	char *aio_buf; \	242	#define EIO_FINISH(req) req_invoke (req)
87	LOCK (wrklock); \	243	static void req_destroy (eio_req *grp);
88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	244	#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		245
95	enum {	246	enum {
96	REQ_QUIT,	247	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	};	248	};
108		249
109	#define AIO_REQ_KLASS "IO::AIO::REQ"	250	#include "libeio/eio.c"
110	#define AIO_GRP_KLASS "IO::AIO::GRP"
111		251
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;	252	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	253	typedef eio_req *aio_req_ornot;
144		254
145	enum {	255	static SV *on_next_submit;
146	PRI_MIN = -4,	256	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	257	static int max_outstanding;
148		258
149	DEFAULT_PRI = 0,	259	static s_epipe respipe;
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		260
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);	261	static void req_destroy (aio_req req);
362	static void req_cancel (aio_req req);	262	static void req_cancel (aio_req req);
363		263
		264	static void want_poll (void)
		265	{
		266	/* write a dummy byte to the pipe so fh becomes ready */
		267	s_epipe_signal (&respipe);
		268	}
		269
		270	static void done_poll (void)
		271	{
		272	/* read any signals sent by the worker threads */
		273	s_epipe_drain (&respipe);
		274	}
		275
364	/* must be called at most once */	276	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	277	static SV *req_sv (aio_req req, HV *stash)
366	{	278	{
367	if (!req->self)	279	if (!req->self)
368	{	280	{
369	req->self = (SV *)newHV ();	281	req->self = (SV *)newHV ();
370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	282	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371	}	283	}
372		284
373	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	285	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374	}	286	}
375		287
376	static aio_req SvAIO_REQ (SV *sv)	288	static aio_req SvAIO_REQ (SV *sv)
377	{	289	{
378	MAGIC *mg;	290	MAGIC *mg;
379		291
380	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	292	if (!SvROK (sv)
		293	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		294	&& SvSTASH (SvRV (sv)) != aio_req_stash
		295	&& !sv_derived_from (sv, "IO::AIO::REQ")))
381	croak ("object of class " AIO_REQ_KLASS " expected");	296	croak ("object of class IO::AIO::REQ expected");
382		297
383	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	298	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384		299
385	return mg ? (aio_req)mg->mg_ptr : 0;	300	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	301	}
387		302
388	static void aio_grp_feed (aio_req grp)	303	static void aio_grp_feed (aio_req grp)
389	{	304	{
390	block_sig ();	305	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	306	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	307	dSP;
399		308
400	ENTER;	309	ENTER;
401	SAVETMPS;	310	SAVETMPS;
402	PUSHMARK (SP);	311	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	312	XPUSHs (req_sv (grp, aio_grp_stash));
404	PUTBACK;	313	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	314	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	315	SPAGAIN;
407	FREETMPS;	316	FREETMPS;
408	LEAVE;	317	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	}	318	}
419
420	unblock_sig ();
421	}	319	}
422		320
423	static void aio_grp_dec (aio_req grp)	321	static void req_submit (eio_req *req)
424	{	322	{
425	--grp->size;	323	eio_submit (req);
426		324
427	/* call feeder, if applicable */	325	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	326	{
433	block_sig ();	327	dSP;
		328	SV *cb = sv_2mortal (on_next_submit);
434		329
435	if (!req_invoke (grp))	330	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		331
442	req_free (grp);	332	PUSHMARK (SP);
443	unblock_sig ();	333	PUTBACK;
		334	call_sv (cb, G_DISCARD | G_EVAL);
444	}	335	}
445	}	336	}
446		337
447	static int req_invoke (aio_req req)	338	static int req_invoke (eio_req *req)
448	{	339	{
449	dSP;
450
451	if (req->flags & FLAG_SV1_RO_OFF)	340	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	341	SvREADONLY_off (req->sv2);
453		342
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	343	if (!EIO_CANCELLED (req) && req->callback)
455	{	344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
456	ENTER;	349	ENTER;
457	SAVETMPS;	350	SAVETMPS;
458	PUSHMARK (SP);	351	PUSHMARK (SP);
459	EXTEND (SP, 1);	352	EXTEND (SP, 1);
460		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
		356	{
		357	sv_result = sv_result_cache; sv_result_cache = 0;
		358	SvIV_set (sv_result, req->result);
		359	}
		360	else
		361	{
		362	sv_result = newSViv (req->result);
		363	SvREADONLY_on (sv_result);
		364	}
		365
461	switch (req->type)	366	switch (req->type)
462	{	367	{
463	case REQ_READDIR:	368	case EIO_READDIR:
464	{	369	{
465	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
466		371
467	if (req->result >= 0)	372	if (req->result >= 0)
468	{	373	{
469	int i;	374	int i;
470	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471	AV *av = newAV ();	377	AV *av = newAV ();
472		378
473	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
474		380
475	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
476	{	382	{
477	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478		386
		387	if (req->int1 & EIO_READDIR_CUSTOM2)
		388	{
		389	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		390	AV *avent = newAV ();
		391
		392	av_extend (avent, 2);
		393
		394	if (!sv_type [ent->type])
		395	{
		396	sv_type [ent->type] = newSViv (ent->type);
		397	SvREADONLY_on (sv_type [ent->type]);
		398	}
		399
		400	av_store (avent, 0, namesv);
		401	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		402	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		403
		404	av_store (av, i, newRV_noinc ((SV *)avent));
		405	}
		406	else
479	av_store (av, i, sv);	407	av_store (av, i, namesv);
		408
		409	++ent;
		410	}
		411	else
		412	{
		413	SV *name = newSVpv (names, 0);
		414	av_store (av, i, name);
480	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
481	}	417	}
482		418
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	420	}
485		421
486	PUSHs (rv);	422	PUSHs (rv);
		423
		424	if (req->int1 & EIO_READDIR_CUSTOM1)
		425	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487	}	426	}
488	break;	427	break;
489		428
490	case REQ_OPEN:	429	case EIO_OPEN:
491	{	430	{
492	/* convert fd to fh */	431	/* convert fd to fh */
493	SV *fh;	432	SV *fh = &PL_sv_undef;
494		433
495	PUSHs (sv_2mortal (newSViv (req->result)));	434	if (req->result >= 0)
496	PUTBACK;	435	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	436	GV *gv = (GV *)sv_newmortal ();
498	SPAGAIN;	437	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		438	char sym [64];
		439	int symlen;
		440
		441	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		442	gv_init (gv, aio_stash, sym, symlen, 0);
499		443
500	fh = POPs;	444	symlen = snprintf (
501	PUSHMARK (SP);	445	sym,
		446	sizeof (sym),
		447	"%s&=%d",
		448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		449	(int)req->result
		450	);
		451
		452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		453	fh = (SV *)gv;
		454	}
		455
502	XPUSHs (fh);	456	PUSHs (fh);
503	}	457	}
504	break;	458	break;
505		459
		460	case EIO_STATVFS:
		461	case EIO_FSTATVFS:
		462	{
		463	SV *rv = &PL_sv_undef;
		464
		465	if (req->result >= 0)
		466	{
		467	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		468	HV *hv = newHV ();
		469
		470	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		471
		472	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		473	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		474	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		475	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		476	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		477	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		478	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		479	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		480	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		481	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		482	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		483	}
		484
		485	PUSHs (rv);
		486	}
		487
		488	break;
		489
506	case REQ_GROUP:	490	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
508		492
509	if (req->sv1)	493	if (req->sv1)
510	{	494	{
511	int i;	495	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
517	}	501	}
518	break;	502	break;
519		503
520	case REQ_NOP:	504	case EIO_NOP:
521	case REQ_BUSY:	505	case EIO_BUSY:
522	break;	506	break;
523		507
524	case REQ_READLINK:	508	case EIO_READLINK:
525	if (req->result > 0)	509	if (req->result > 0)
526	{	510	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;	511	break;
532		512
533	case REQ_STAT:	513	case EIO_STAT:
534	case REQ_LSTAT:	514	case EIO_LSTAT:
535	case REQ_FSTAT:	515	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	517	PL_laststatval = req->result;
538	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
540	break;	520	break;
541		521
542	case REQ_READ:	522	case EIO_READ:
		523	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	524	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	525	*SvEND (req->sv2) = 0;
545	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
546	break;	530	break;
547		531
		532	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		533	if (req->result > 0)
		534	SvIV_set (sv_result, 0);
		535	/* FALLTHROUGH */
		536
548	default:	537	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
550	break;	539	break;
551	}	540	}
552		541
553	errno = req->errorno;	542	errno = req->errorno;
554		543
555	PUTBACK;	544	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	546	SPAGAIN;
		547
		548	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		549	SvREFCNT_dec (sv_result);
		550	else
		551	sv_result_cache = sv_result;
558		552
559	FREETMPS;	553	FREETMPS;
560	LEAVE;	554	LEAVE;
		555
		556	PUTBACK;
561	}	557	}
562		558
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);	559	return !!SvTRUE (ERRSV);
578	}	560	}
579		561
580	static void req_free (aio_req req)	562	static void req_destroy (aio_req req)
581	{	563	{
582	if (req->self)	564	if (req->self)
583	{	565	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	566	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	567	SvREFCNT_dec (req->self);
586	}	568	}
587		569
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
591	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
592		573
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	574	Safefree (req);
597	}	575	}
598		576
599	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
600	{	578	{
601	aio_req sub;	579	aio_req sub;
602		580
603	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
604	return;	582	return;
605		583
606	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	585	grp->sv2 = 0;
608		586
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	588	}
612		589
613	static void req_cancel (aio_req req)	590	static void
		591	create_respipe (void)
614	{	592	{
615	req->flags |= FLAG_CANCELLED;	593	if (s_epipe_renew (&respipe))
616		594	croak ("IO::AIO: unable to initialize result pipe");
617	req_cancel_subs (req);
618	}	595	}
619		596
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 ()	597	static void poll_wait (void)
730	{	598	{
731	fd_set rfd;
732
733	while (nreqs)	599	while (eio_nreqs ())
734	{	600	{
735	int size;	601	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	602
		603	X_LOCK (reslock);
737	size = res_queue.size;	604	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	605	X_UNLOCK (reslock);
739		606
740	if (size)	607	if (size)
741	return;	608	return;
742		609
743	maybe_start_thread ();	610	etp_maybe_start_thread ();
744		611
745	FD_ZERO(&rfd);	612	s_epipe_wait (&respipe);
746	FD_SET(respipe [0], &rfd);
747
748	select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	613	}
750	}	614	}
751		615
752	static int poll_cb ()	616	static int poll_cb (void)
753	{	617	{
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 (;;)	618	for (;;)
767	{	619	{
768	for (;;)	620	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		621
772	LOCK (reslock);	622	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);	623	croak (0);
807	}
808		624
809	count++;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	626	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		627
829	poll_wait ();	628	poll_wait ();
830
831	++maxreqs;
832	}	629	}
833
834	unblock_sig ();
835	return count;
836	}	630	}
837		631
838	static void create_pipe ()	632	static void atfork_child (void)
839	{	633	{
840	if (pipe (respipe))	634	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	}	635	}
849		636
850	/*****************************************************************************/	637	/*****************************************************************************/
851	/* work around various missing functions */
852		638
853	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
854	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
855	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
856		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
857	/*	643	# define PROT_NONE 0
858	* make our pread/pwrite safe against themselves, but not against	644	# define PROT_WRITE 0
859	* normal read/write by using a mutex. slows down execution a lot,	645	# define MAP_PRIVATE 0
860	* but that's your problem, not mine.	646	# define MAP_SHARED 0
861	*/	647	# 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	648	#endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000		649
1001	if (res < 0	650	#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		651
1012	res = 0;	652	static int
		653	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		654	{
		655	int old_errno = errno;
		656	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		657	errno = old_errno;
1013		658
1014	while (count)	659	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		660
1020	if (cnt <= 0)	661	SvREADONLY_off (sv);
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025		662
1026	cnt = write (ofd, aio_buf, cnt);	663	if (SvPVX (sv) != mg->mg_ptr)
		664	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1027		665
1028	if (cnt <= 0)	666	SvCUR_set (sv, 0);
1029	{	667	SvPVX (sv) = 0;
1030	if (cnt && !res) res = -1;	668	SvOK_off (sv);
1031	break;
1032	}
1033		669
1034	offset += cnt;
1035	res += cnt;
1036	count -= cnt;
1037	}
1038	}
1039
1040	return res;	670	return 0;
1041	}	671	}
1042		672
1043	/* read a full directory */	673	static MGVTBL mmap_vtbl = {
1044	static void scandir_ (aio_req req, worker *self)	674	0, 0, 0, 0, mmap_free
1045	{	675	};
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		676
1105	/*****************************************************************************/	677	/*****************************************************************************/
1106		678
1107	static void *aio_proc (void *thr_arg)	679	static SV *
		680	get_cb (SV *cb_sv)
1108	{	681	{
1109	aio_req req;	682	SvGETMAGIC (cb_sv);
1110	struct timespec ts;	683	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	}	684	}
1299		685
1300	#define dREQ \	686	#define dREQ \
		687	SV *cb_cv; \
1301	aio_req req; \	688	aio_req req; \
1302	int req_pri = next_pri; \	689	int req_pri = next_pri; \
1303	next_pri = DEFAULT_PRI + PRI_BIAS; \	690	next_pri = EIO_PRI_DEFAULT; \
1304	\	691	\
1305	if (SvOK (callback) && !SvROK (callback)) \	692	cb_cv = get_cb (callback); \
1306	croak ("callback must be undef or of reference type"); \
1307	\	693	\
1308	Newz (0, req, 1, aio_cb); \	694	Newz (0, req, 1, eio_req); \
1309	if (!req) \	695	if (!req) \
1310	croak ("out of memory during aio_req allocation"); \	696	croak ("out of memory during eio_req allocation"); \
1311	\	697	\
1312	req->callback = newSVsv (callback); \	698	req->callback = SvREFCNT_inc (cb_cv); \
1313	req->pri = req_pri	699	req->pri = req_pri
1314		700
1315	#define REQ_SEND \	701	#define REQ_SEND \
		702	PUTBACK; \
1316	req_send (req); \	703	req_submit (req); \
		704	SPAGAIN; \
1317	\	705	\
1318	if (GIMME_V != G_VOID) \	706	if (GIMME_V != G_VOID) \
1319	XPUSHs (req_sv (req, AIO_REQ_KLASS));	707	XPUSHs (req_sv (req, aio_req_stash));
1320		708
1321	MODULE = IO::AIO PACKAGE = IO::AIO	709	MODULE = IO::AIO PACKAGE = IO::AIO
1322		710
1323	PROTOTYPES: ENABLE	711	PROTOTYPES: ENABLE
1324		712
1325	BOOT:	713	BOOT:
1326	{	714	{
		715	static const struct {
		716	const char *name;
		717	IV iv;
		718	} *civ, const_iv[] = {
		719	# define const_niv(name, value) { # name, (IV) value },
		720	# define const_iv(name) { # name, (IV) name },
		721	# define const_eio(name) { # name, (IV) EIO_ ## name },
		722	const_iv (EXDEV)
		723	const_iv (ENOSYS)
		724	const_iv (O_RDONLY)
		725	const_iv (O_WRONLY)
		726	const_iv (O_RDWR)
		727	const_iv (O_CREAT)
		728	const_iv (O_TRUNC)
		729	const_iv (O_EXCL)
		730	const_iv (O_APPEND)
		731	#ifndef _WIN32
		732	const_iv (S_IFIFO)
		733	#endif
		734	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		735	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		736	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		737	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		738	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		739	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		740
		741	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		742	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		743	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		744	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		745	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		746
		747	const_iv (ST_RDONLY)
		748	const_iv (ST_NOSUID)
		749	const_iv (ST_NODEV)
		750	const_iv (ST_NOEXEC)
		751	const_iv (ST_SYNCHRONOUS)
		752	const_iv (ST_MANDLOCK)
		753	const_iv (ST_WRITE)
		754	const_iv (ST_APPEND)
		755	const_iv (ST_IMMUTABLE)
		756	const_iv (ST_NOATIME)
		757	const_iv (ST_NODIRATIME)
		758	const_iv (ST_RELATIME)
		759
		760	const_iv (PROT_NONE)
		761	const_iv (PROT_EXEC)
		762	const_iv (PROT_READ)
		763	const_iv (PROT_WRITE)
		764
		765	/*const_iv (MAP_FIXED)*/
		766	const_iv (MAP_PRIVATE)
		767	const_iv (MAP_SHARED)
		768	const_iv (MAP_ANONYMOUS)
		769
		770	/* linuxish */
		771	const_iv (MAP_HUGETLB)
		772	const_iv (MAP_LOCKED)
		773	const_iv (MAP_NORESERVE)
		774	const_iv (MAP_POPULATE)
		775	const_iv (MAP_NONBLOCK)
		776
		777	const_eio (MCL_FUTURE)
		778	const_eio (MCL_CURRENT)
		779
		780	const_eio (MS_ASYNC)
		781	const_eio (MS_INVALIDATE)
		782	const_eio (MS_SYNC)
		783
		784	const_eio (MT_MODIFY)
		785
		786	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		787	const_eio (SYNC_FILE_RANGE_WRITE)
		788	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		789
		790	const_eio (READDIR_DENTS)
		791	const_eio (READDIR_DIRS_FIRST)
		792	const_eio (READDIR_STAT_ORDER)
		793	const_eio (READDIR_FOUND_UNKNOWN)
		794
		795	const_eio (DT_UNKNOWN)
		796	const_eio (DT_FIFO)
		797	const_eio (DT_CHR)
		798	const_eio (DT_DIR)
		799	const_eio (DT_BLK)
		800	const_eio (DT_REG)
		801	const_eio (DT_LNK)
		802	const_eio (DT_SOCK)
		803	const_eio (DT_WHT)
		804	};
		805
1327	HV *stash = gv_stashpv ("IO::AIO", 1);	806	aio_stash = gv_stashpv ("IO::AIO" , 1);
		807	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		808	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1328		809
1329	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	810	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1330	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	811	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		812
		813	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		814
1337	create_pipe ();	815	create_respipe ();
1338	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	816
		817	if (eio_init (want_poll, done_poll) < 0)
		818	croak ("IO::AIO: unable to initialise eio library");
		819
		820	/* atfork child called in fifo order, so before eio's handler */
		821	X_THREAD_ATFORK (0, 0, atfork_child);
1339	}	822	}
1340		823
1341	void	824	void
1342	max_poll_reqs (int nreqs)	825	max_poll_reqs (int nreqs)
1343	PROTOTYPE: $	826	PROTOTYPE: $
1344	CODE:	827	CODE:
1345	max_poll_reqs = nreqs;	828	eio_set_max_poll_reqs (nreqs);
1346		829
1347	void	830	void
1348	max_poll_time (double nseconds)	831	max_poll_time (double nseconds)
1349	PROTOTYPE: $	832	PROTOTYPE: $
1350	CODE:	833	CODE:
1351	max_poll_time = nseconds * AIO_TICKS;	834	eio_set_max_poll_time (nseconds);
1352		835
1353	void	836	void
1354	min_parallel (int nthreads)	837	min_parallel (int nthreads)
1355	PROTOTYPE: $	838	PROTOTYPE: $
		839	CODE:
		840	eio_set_min_parallel (nthreads);
1356		841
1357	void	842	void
1358	max_parallel (int nthreads)	843	max_parallel (int nthreads)
1359	PROTOTYPE: $	844	PROTOTYPE: $
		845	CODE:
		846	eio_set_max_parallel (nthreads);
1360		847
1361	void	848	void
1362	max_idle (int nthreads)	849	max_idle (int nthreads)
1363	PROTOTYPE: $	850	PROTOTYPE: $
1364	CODE:	851	CODE:
1365	set_max_idle (nthreads);	852	eio_set_max_idle (nthreads);
1366		853
1367	int	854	void
1368	max_outstanding (int maxreqs)	855	max_outstanding (int maxreqs)
1369	PROTOTYPE: $	856	PROTOTYPE: $
1370	CODE:	857	CODE:
1371	RETVAL = max_outstanding;
1372	max_outstanding = maxreqs;	858	max_outstanding = maxreqs;
1373	OUTPUT:
1374	RETVAL
1375		859
1376	void	860	void
1377	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	861	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:	862	PPCODE:
1384	{	863	{
1385	dREQ;	864	dREQ;
1386		865
1387	req->type = REQ_OPEN;	866	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	867	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	868	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	869	req->int1 = flags;
1391	req->mode = mode;	870	req->int2 = mode;
1392		871
1393	REQ_SEND;	872	REQ_SEND;
1394	}	873	}
1395		874
1396	void	875	void
1397	aio_close (fh,callback=&PL_sv_undef)	876	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	SV * fh
1399	SV * callback
1400	PROTOTYPE: $;$
1401	ALIAS:	877	ALIAS:
1402	aio_close = REQ_CLOSE
1403	aio_fsync = REQ_FSYNC	878	aio_fsync = EIO_FSYNC
1404	aio_fdatasync = REQ_FDATASYNC	879	aio_fdatasync = EIO_FDATASYNC
1405	PPCODE:	880	PPCODE:
1406	{	881	{
		882	int fd = s_fileno_croak (fh, 0);
1407	dREQ;	883	dREQ;
1408		884
1409	req->type = ix;	885	req->type = ix;
1410	req->fh = newSVsv (fh);	886	req->sv1 = newSVsv (fh);
1411	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	887	req->int1 = fd;
1412		888
1413	REQ_SEND (req);	889	REQ_SEND (req);
1414	}	890	}
1415		891
1416	void	892	void
		893	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		894	PPCODE:
		895	{
		896	int fd = s_fileno_croak (fh, 0);
		897	dREQ;
		898
		899	req->type = EIO_SYNC_FILE_RANGE;
		900	req->sv1 = newSVsv (fh);
		901	req->int1 = fd;
		902	req->offs = offset;
		903	req->size = nbytes;
		904	req->int2 = flags;
		905
		906	REQ_SEND (req);
		907	}
		908
		909	void
		910	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		911	PPCODE:
		912	{
		913	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		914	int fd = s_fileno_croak (fh, 0);
		915	dREQ;
		916
		917	if (close_pipe < 0)
		918	{
		919	int pipefd [2];
		920
		921	if (pipe (pipefd) < 0
		922	|| close (pipefd [1]) < 0
		923	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		924	abort (); /*D*/
		925
		926	close_pipe = pipefd [0];
		927	}
		928
		929	req->type = EIO_DUP2;
		930	req->int1 = close_pipe;
		931	req->sv2 = newSVsv (fh);
		932	req->int2 = fd;
		933
		934	REQ_SEND (req);
		935	}
		936
		937	void
1417	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	938	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:	939	ALIAS:
1425	aio_read = REQ_READ	940	aio_read = EIO_READ
1426	aio_write = REQ_WRITE	941	aio_write = EIO_WRITE
1427	PROTOTYPE: $$$$$;$
1428	PPCODE:	942	PPCODE:
1429	{	943	{
1430	STRLEN svlen;	944	STRLEN svlen;
		945	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1431	char *svptr = SvPVbyte (data, svlen);	946	char *svptr = SvPVbyte (data, svlen);
1432		947	UV len = SvUV (length);
1433	SvUPGRADE (data, SVt_PV);
1434	SvPOK_on (data);
1435		948
1436	if (dataoffset < 0)	949	if (dataoffset < 0)
1437	dataoffset += svlen;	950	dataoffset += svlen;
1438		951
1439	if (dataoffset < 0 || dataoffset > svlen)	952	if (dataoffset < 0 || dataoffset > svlen)
1440	croak ("data offset outside of string");	953	croak ("dataoffset outside of data scalar");
1441		954
1442	if (ix == REQ_WRITE)	955	if (ix == EIO_WRITE)
1443	{	956	{
1444	/* write: check length and adjust. */	957	/* write: check length and adjust. */
1445	if (length < 0 || length + dataoffset > svlen)	958	if (!SvOK (length) || len + dataoffset > svlen)
1446	length = svlen - dataoffset;	959	len = svlen - dataoffset;
1447	}	960	}
1448	else	961	else
1449	{	962	{
1450	/* read: grow scalar as necessary */	963	/* read: check type and grow scalar as necessary */
		964	SvUPGRADE (data, SVt_PV);
1451	svptr = SvGROW (data, length + dataoffset + 1);	965	svptr = SvGROW (data, len + dataoffset + 1);
1452	}	966	}
1453
1454	if (length < 0)
1455	croak ("length must not be negative");
1456		967
1457	{	968	{
1458	dREQ;	969	dREQ;
1459		970
1460	req->type = ix;	971	req->type = ix;
1461	req->fh = newSVsv (fh);	972	req->sv1 = newSVsv (fh);
1462	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	973	req->int1 = fd;
1463	: IoOFP (sv_2io (fh)));	974	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1464	req->offs = offset;
1465	req->size = length;	975	req->size = len;
1466	req->sv1 = SvREFCNT_inc (data);	976	req->sv2 = SvREFCNT_inc (data);
1467	req->ptr1 = (char *)svptr + dataoffset;	977	req->ptr2 = (char *)svptr + dataoffset;
1468	req->stroffset = dataoffset;	978	req->stroffset = dataoffset;
1469		979
1470	if (!SvREADONLY (data))	980	if (!SvREADONLY (data))
1471	{	981	{
1472	SvREADONLY_on (data);	982	SvREADONLY_on (data);
1473	req->flags |= FLAG_SV1_RO_OFF;	983	req->flags |= FLAG_SV2_RO_OFF;
1474	}	984	}
1475		985
1476	REQ_SEND;	986	REQ_SEND;
1477	}	987	}
1478	}	988	}
1479		989
1480	void	990	void
1481	aio_readlink (path,callback=&PL_sv_undef)	991	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1482	SV8 * path
1483	SV * callback
1484	PROTOTYPE: $$;$
1485	PPCODE:	992	PPCODE:
1486	{	993	{
1487	SV *data;	994	SV *data;
1488	dREQ;	995	dREQ;
1489		996
1490	data = newSV (NAME_MAX);
1491	SvPOK_on (data);
1492
1493	req->type = REQ_READLINK;	997	req->type = EIO_READLINK;
1494	req->fh = newSVsv (path);	998	req->sv1 = newSVsv (path);
1495	req->ptr2 = SvPVbyte_nolen (req->fh);	999	req->ptr1 = SvPVbyte_nolen (req->sv1);
1496	req->sv1 = data;
1497	req->ptr1 = SvPVbyte_nolen (data);
1498		1000
1499	REQ_SEND;	1001	REQ_SEND;
1500	}	1002	}
1501		1003
1502	void	1004	void
1503	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1005	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: $$$$;$
1510	PPCODE:	1006	PPCODE:
1511	{	1007	{
		1008	int ifd = s_fileno_croak (in_fh , 0);
		1009	int ofd = s_fileno_croak (out_fh, 1);
1512	dREQ;	1010	dREQ;
1513		1011
1514	req->type = REQ_SENDFILE;	1012	req->type = EIO_SENDFILE;
1515	req->fh = newSVsv (out_fh);	1013	req->sv1 = newSVsv (out_fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1014	req->int1 = ofd;
1517	req->sv2 = newSVsv (in_fh);	1015	req->sv2 = newSVsv (in_fh);
1518	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1016	req->int2 = ifd;
1519	req->offs = in_offset;	1017	req->offs = in_offset;
1520	req->size = length;	1018	req->size = length;
1521		1019
1522	REQ_SEND;	1020	REQ_SEND;
1523	}	1021	}
1524		1022
1525	void	1023	void
1526	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1024	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1527	SV * fh
1528	UV offset
1529	IV length
1530	SV * callback
1531	PROTOTYPE: $$$;$
1532	PPCODE:	1025	PPCODE:
1533	{	1026	{
		1027	int fd = s_fileno_croak (fh, 0);
1534	dREQ;	1028	dREQ;
1535		1029
1536	req->type = REQ_READAHEAD;	1030	req->type = EIO_READAHEAD;
1537	req->fh = newSVsv (fh);	1031	req->sv1 = newSVsv (fh);
1538	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1032	req->int1 = fd;
1539	req->offs = offset;	1033	req->offs = offset;
1540	req->size = length;	1034	req->size = length;
1541		1035
1542	REQ_SEND;	1036	REQ_SEND;
1543	}	1037	}
1544		1038
1545	void	1039	void
1546	aio_stat (fh_or_path,callback=&PL_sv_undef)	1040	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1547	SV8 * fh_or_path
1548	SV * callback
1549	ALIAS:	1041	ALIAS:
1550	aio_stat = REQ_STAT	1042	aio_stat = EIO_STAT
1551	aio_lstat = REQ_LSTAT	1043	aio_lstat = EIO_LSTAT
		1044	aio_statvfs = EIO_STATVFS
1552	PPCODE:	1045	PPCODE:
1553	{	1046	{
1554	dREQ;	1047	dREQ;
1555		1048
1556	req->ptr2 = malloc (sizeof (Stat_t));	1049	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		1050
1563	req->flags |= FLAG_PTR2_FREE;	1051	if (SvPOK (req->sv1))
1564
1565	if (SvPOK (fh_or_path))
1566	{	1052	{
1567	req->type = ix;	1053	req->type = ix;
1568	req->sv1 = newSVsv (fh_or_path);
1569	req->ptr1 = SvPVbyte_nolen (req->sv1);	1054	req->ptr1 = SvPVbyte_nolen (req->sv1);
1570	}	1055	}
1571	else	1056	else
1572	{	1057	{
1573	req->type = REQ_FSTAT;	1058	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)));	1059	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1576	}	1060	}
1577		1061
1578	REQ_SEND;	1062	REQ_SEND;
1579	}	1063	}
1580		1064
1581	void	1065	void
		1066	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1067	PPCODE:
		1068	{
		1069	dREQ;
		1070
		1071	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1072	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1073	req->sv1 = newSVsv (fh_or_path);
		1074
		1075	if (SvPOK (req->sv1))
		1076	{
		1077	req->type = EIO_UTIME;
		1078	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1079	}
		1080	else
		1081	{
		1082	req->type = EIO_FUTIME;
		1083	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1084	}
		1085
		1086	REQ_SEND;
		1087	}
		1088
		1089	void
		1090	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1091	PPCODE:
		1092	{
		1093	dREQ;
		1094
		1095	req->sv1 = newSVsv (fh_or_path);
		1096	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1097
		1098	if (SvPOK (req->sv1))
		1099	{
		1100	req->type = EIO_TRUNCATE;
		1101	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1102	}
		1103	else
		1104	{
		1105	req->type = EIO_FTRUNCATE;
		1106	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1107	}
		1108
		1109	REQ_SEND;
		1110	}
		1111
		1112	void
		1113	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1114	ALIAS:
		1115	aio_chmod = EIO_CHMOD
		1116	aio_mkdir = EIO_MKDIR
		1117	PPCODE:
		1118	{
		1119	dREQ;
		1120
		1121	req->int2 = mode;
		1122	req->sv1 = newSVsv (fh_or_path);
		1123
		1124	if (SvPOK (req->sv1))
		1125	{
		1126	req->type = ix;
		1127	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1128	}
		1129	else
		1130	{
		1131	req->type = EIO_FCHMOD;
		1132	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1133	}
		1134
		1135	REQ_SEND;
		1136	}
		1137
		1138	void
		1139	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1140	PPCODE:
		1141	{
		1142	dREQ;
		1143
		1144	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1145	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1146	req->sv1 = newSVsv (fh_or_path);
		1147
		1148	if (SvPOK (req->sv1))
		1149	{
		1150	req->type = EIO_CHOWN;
		1151	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1152	}
		1153	else
		1154	{
		1155	req->type = EIO_FCHOWN;
		1156	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1157	}
		1158
		1159	REQ_SEND;
		1160	}
		1161
		1162	void
		1163	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1164	PPCODE:
		1165	{
		1166	dREQ;
		1167
		1168	req->type = EIO_READDIR;
		1169	req->sv1 = newSVsv (pathname);
		1170	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1171	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1172
		1173	if (flags & EIO_READDIR_DENTS)
		1174	req->int1 |= EIO_READDIR_CUSTOM2;
		1175
		1176	REQ_SEND;
		1177	}
		1178
		1179	void
1582	aio_unlink (pathname,callback=&PL_sv_undef)	1180	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1583	SV8 * pathname
1584	SV * callback
1585	ALIAS:	1181	ALIAS:
1586	aio_unlink = REQ_UNLINK	1182	aio_unlink = EIO_UNLINK
1587	aio_rmdir = REQ_RMDIR	1183	aio_rmdir = EIO_RMDIR
1588	aio_readdir = REQ_READDIR	1184	aio_readdir = EIO_READDIR
1589	PPCODE:	1185	PPCODE:
1590	{	1186	{
1591	dREQ;	1187	dREQ;
1592		1188
1593	req->type = ix;	1189	req->type = ix;
…		…
1596		1192
1597	REQ_SEND;	1193	REQ_SEND;
1598	}	1194	}
1599		1195
1600	void	1196	void
1601	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1197	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1602	SV8 * oldpath
1603	SV8 * newpath
1604	SV * callback
1605	ALIAS:	1198	ALIAS:
1606	aio_link = REQ_LINK	1199	aio_link = EIO_LINK
1607	aio_symlink = REQ_SYMLINK	1200	aio_symlink = EIO_SYMLINK
1608	aio_rename = REQ_RENAME	1201	aio_rename = EIO_RENAME
1609	PPCODE:	1202	PPCODE:
1610	{	1203	{
1611	dREQ;	1204	dREQ;
1612		1205
1613	req->type = ix;	1206	req->type = ix;
1614	req->fh = newSVsv (oldpath);	1207	req->sv1 = newSVsv (oldpath);
1615	req->ptr2 = SvPVbyte_nolen (req->fh);
1616	req->sv1 = newSVsv (newpath);
1617	req->ptr1 = SvPVbyte_nolen (req->sv1);	1208	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1209	req->sv2 = newSVsv (newpath);
		1210	req->ptr2 = SvPVbyte_nolen (req->sv2);
1618		1211
1619	REQ_SEND;	1212	REQ_SEND;
1620	}	1213	}
1621		1214
1622	void	1215	void
1623	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1216	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:	1217	PPCODE:
1629	{	1218	{
1630	dREQ;	1219	dREQ;
1631		1220
1632	req->type = REQ_MKNOD;	1221	req->type = EIO_MKNOD;
1633	req->sv1 = newSVsv (pathname);	1222	req->sv1 = newSVsv (pathname);
1634	req->ptr1 = SvPVbyte_nolen (req->sv1);	1223	req->ptr1 = SvPVbyte_nolen (req->sv1);
1635	req->mode = (mode_t)mode;	1224	req->int2 = (mode_t)mode;
1636	req->offs = dev;	1225	req->offs = dev;
1637		1226
1638	REQ_SEND;	1227	REQ_SEND;
1639	}	1228	}
1640		1229
1641	void	1230	void
		1231	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1232	ALIAS:
		1233	aio_mtouch = EIO_MTOUCH
		1234	aio_msync = EIO_MSYNC
		1235	PPCODE:
		1236	{
		1237	STRLEN svlen;
		1238	char *svptr = SvPVbyte (data, svlen);
		1239	UV len = SvUV (length);
		1240
		1241	if (offset < 0)
		1242	offset += svlen;
		1243
		1244	if (offset < 0 || offset > svlen)
		1245	croak ("offset outside of scalar");
		1246
		1247	if (!SvOK (length) || len + offset > svlen)
		1248	len = svlen - offset;
		1249
		1250	{
		1251	dREQ;
		1252
		1253	req->type = ix;
		1254	req->sv2 = SvREFCNT_inc (data);
		1255	req->ptr2 = (char *)svptr + offset;
		1256	req->size = len;
		1257	req->int1 = flags;
		1258
		1259	REQ_SEND;
		1260	}
		1261	}
		1262
		1263	void
		1264	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	STRLEN svlen;
		1268	char *svptr = SvPVbyte (data, svlen);
		1269	UV len = SvUV (length);
		1270
		1271	if (offset < 0)
		1272	offset += svlen;
		1273
		1274	if (offset < 0 || offset > svlen)
		1275	croak ("offset outside of scalar");
		1276
		1277	if (!SvOK (length) || len + offset > svlen)
		1278	len = svlen - offset;
		1279
		1280	{
		1281	dREQ;
		1282
		1283	req->type = EIO_MLOCK;
		1284	req->sv2 = SvREFCNT_inc (data);
		1285	req->ptr2 = (char *)svptr + offset;
		1286	req->size = len;
		1287
		1288	REQ_SEND;
		1289	}
		1290	}
		1291
		1292	void
		1293	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1294	PPCODE:
		1295	{
		1296	dREQ;
		1297
		1298	req->type = EIO_MLOCKALL;
		1299	req->int1 = flags;
		1300
		1301	REQ_SEND;
		1302	}
		1303
		1304	void
1642	aio_busy (delay,callback=&PL_sv_undef)	1305	aio_busy (double delay, SV *callback=&PL_sv_undef)
1643	double delay
1644	SV * callback
1645	PPCODE:	1306	PPCODE:
1646	{	1307	{
1647	dREQ;	1308	dREQ;
1648		1309
1649	req->type = REQ_BUSY;	1310	req->type = EIO_BUSY;
1650	req->int1 = delay < 0. ? 0 : delay;	1311	req->nv1 = delay < 0. ? 0. : delay;
1651	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1652		1312
1653	REQ_SEND;	1313	REQ_SEND;
1654	}	1314	}
1655		1315
1656	void	1316	void
1657	aio_group (callback=&PL_sv_undef)	1317	aio_group (SV *callback=&PL_sv_undef)
1658	SV * callback
1659	PROTOTYPE: ;$
1660	PPCODE:	1318	PPCODE:
1661	{	1319	{
1662	dREQ;	1320	dREQ;
1663		1321
1664	req->type = REQ_GROUP;	1322	req->type = EIO_GROUP;
1665		1323
1666	req_send (req);	1324	req_submit (req);
1667	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1325	XPUSHs (req_sv (req, aio_grp_stash));
1668	}	1326	}
1669		1327
1670	void	1328	void
1671	aio_nop (callback=&PL_sv_undef)	1329	aio_nop (SV *callback=&PL_sv_undef)
1672	SV * callback	1330	ALIAS:
		1331	aio_nop = EIO_NOP
		1332	aio_sync = EIO_SYNC
1673	PPCODE:	1333	PPCODE:
1674	{	1334	{
1675	dREQ;	1335	dREQ;
1676		1336
1677	req->type = REQ_NOP;	1337	req->type = ix;
1678		1338
1679	REQ_SEND;	1339	REQ_SEND;
1680	}	1340	}
1681		1341
1682	int	1342	int
1683	aioreq_pri (int pri = 0)	1343	aioreq_pri (int pri = 0)
1684	PROTOTYPE: ;$
1685	CODE:	1344	CODE:
1686	RETVAL = next_pri - PRI_BIAS;	1345	RETVAL = next_pri;
1687	if (items > 0)	1346	if (items > 0)
1688	{	1347	{
1689	if (pri < PRI_MIN) pri = PRI_MIN;	1348	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1690	if (pri > PRI_MAX) pri = PRI_MAX;	1349	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1691	next_pri = pri + PRI_BIAS;	1350	next_pri = pri;
1692	}	1351	}
1693	OUTPUT:	1352	OUTPUT:
1694	RETVAL	1353	RETVAL
1695		1354
1696	void	1355	void
1697	aioreq_nice (int nice = 0)	1356	aioreq_nice (int nice = 0)
1698	CODE:	1357	CODE:
1699	nice = next_pri - nice;	1358	nice = next_pri - nice;
1700	if (nice < PRI_MIN) nice = PRI_MIN;	1359	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1701	if (nice > PRI_MAX) nice = PRI_MAX;	1360	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1702	next_pri = nice + PRI_BIAS;	1361	next_pri = nice;
1703		1362
1704	void	1363	void
1705	flush ()	1364	flush ()
1706	PROTOTYPE:
1707	CODE:	1365	CODE:
1708	while (nreqs)	1366	while (eio_nreqs ())
1709	{	1367	{
1710	poll_wait ();	1368	poll_wait ();
1711	poll_cb ();	1369	poll_cb ();
1712	}	1370	}
1713		1371
1714	int	1372	int
1715	poll()	1373	poll ()
1716	PROTOTYPE:
1717	CODE:	1374	CODE:
1718	poll_wait ();	1375	poll_wait ();
1719	RETVAL = poll_cb ();	1376	RETVAL = poll_cb ();
1720	OUTPUT:	1377	OUTPUT:
1721	RETVAL	1378	RETVAL
1722		1379
1723	int	1380	int
1724	poll_fileno()	1381	poll_fileno ()
1725	PROTOTYPE:
1726	CODE:	1382	CODE:
1727	RETVAL = respipe [0];	1383	RETVAL = s_epipe_fd (&respipe);
1728	OUTPUT:	1384	OUTPUT:
1729	RETVAL	1385	RETVAL
1730		1386
1731	int	1387	int
1732	poll_cb(...)	1388	poll_cb (...)
1733	PROTOTYPE:	1389	PROTOTYPE:
1734	CODE:	1390	CODE:
1735	RETVAL = poll_cb ();	1391	RETVAL = poll_cb ();
1736	OUTPUT:	1392	OUTPUT:
1737	RETVAL	1393	RETVAL
1738		1394
1739	void	1395	void
1740	poll_wait()	1396	poll_wait ()
1741	PROTOTYPE:
1742	CODE:	1397	CODE:
1743	poll_wait ();	1398	poll_wait ();
1744		1399
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	1400	int
1783	nreqs()	1401	nreqs ()
1784	PROTOTYPE:
1785	CODE:	1402	CODE:
1786	RETVAL = nreqs;	1403	RETVAL = eio_nreqs ();
1787	OUTPUT:	1404	OUTPUT:
1788	RETVAL	1405	RETVAL
1789		1406
1790	int	1407	int
1791	nready()	1408	nready ()
1792	PROTOTYPE:
1793	CODE:	1409	CODE:
1794	RETVAL = get_nready ();	1410	RETVAL = eio_nready ();
1795	OUTPUT:	1411	OUTPUT:
1796	RETVAL	1412	RETVAL
1797		1413
1798	int	1414	int
1799	npending()	1415	npending ()
1800	PROTOTYPE:
1801	CODE:	1416	CODE:
1802	RETVAL = get_npending ();	1417	RETVAL = eio_npending ();
1803	OUTPUT:	1418	OUTPUT:
1804	RETVAL	1419	RETVAL
1805		1420
1806	int	1421	int
1807	nthreads()	1422	nthreads ()
1808	PROTOTYPE:
1809	CODE:	1423	CODE:
1810	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1424	RETVAL = eio_nthreads ();
1811	RETVAL = started;
1812	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1813	OUTPUT:	1425	OUTPUT:
1814	RETVAL	1426	RETVAL
1815		1427
		1428	int
		1429	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1430	CODE:
		1431	RETVAL = posix_fadvise (fh, offset, length, advice);
		1432	OUTPUT:
		1433	RETVAL
		1434
		1435	ssize_t
		1436	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1437	CODE:
		1438	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1439	OUTPUT:
		1440	RETVAL
		1441
		1442	void
		1443	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1444	PPCODE:
		1445	sv_unmagic (scalar, MMAP_MAGIC);
		1446	{
		1447	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1448	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1449	if (addr == (void *)-1)
		1450	XSRETURN_NO;
		1451
		1452	sv_force_normal (scalar);
		1453
		1454	/* we store the length in mg_obj, as namlen is I32 :/ */
		1455	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1456	->mg_obj = (SV *)length;
		1457
		1458	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1459
		1460	if (!(prot & PROT_WRITE))
		1461	SvREADONLY_on (scalar);
		1462
		1463	if (SvLEN (scalar))
		1464	Safefree (SvPVX (scalar));
		1465
		1466	SvPVX (scalar) = (char *)addr;
		1467	SvCUR_set (scalar, length);
		1468	SvLEN_set (scalar, 0);
		1469	SvPOK_only (scalar);
		1470
		1471	XSRETURN_YES;
		1472	}
		1473
		1474	void
		1475	munmap (SV *scalar)
		1476	CODE:
		1477	sv_unmagic (scalar, MMAP_MAGIC);
		1478
		1479	int
		1480	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1481	ALIAS:
		1482	mprotect = 1
		1483	CODE:
		1484	{
		1485	STRLEN svlen;
		1486	void *addr = SvPVbyte (scalar, svlen);
		1487	size_t len = SvUV (length);
		1488
		1489	if (offset < 0)
		1490	offset += svlen;
		1491
		1492	if (offset < 0 || offset > svlen)
		1493	croak ("offset outside of scalar");
		1494
		1495	if (!SvOK (length) || len + offset > svlen)
		1496	len = svlen - offset;
		1497
		1498	addr = (void *)(((intptr_t)addr) + offset);
		1499	eio_page_align (&addr, &len);
		1500
		1501	switch (ix)
		1502	{
		1503	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1504	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1505	}
		1506	}
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1512	CODE:
		1513	{
		1514	STRLEN svlen;
		1515	void *addr = SvPVbyte (scalar, svlen);
		1516	size_t len = SvUV (length);
		1517
		1518	if (offset < 0)
		1519	offset += svlen;
		1520
		1521	if (offset < 0 || offset > svlen)
		1522	croak ("offset outside of scalar");
		1523
		1524	if (!SvOK (length) || len + offset > svlen)
		1525	len = svlen - offset;
		1526
		1527	addr = (void *)(((intptr_t)addr) + offset);
		1528	eio_page_align (&addr, &len);
		1529	#if _POSIX_MEMLOCK
		1530	RETVAL = munlock (addr, len);
		1531	#else
		1532	RETVAL = ((errno = ENOSYS), -1);
		1533	#endif
		1534	}
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
		1539	munlockall ()
		1540	CODE:
		1541	#if _POSIX_MEMLOCK
		1542	munlockall ();
		1543	#else
		1544	RETVAL = -1;
		1545	errno = ENOSYS;
		1546	#endif
		1547	OUTPUT:
		1548	RETVAL
		1549
		1550	void _on_next_submit (SV *cb)
		1551	CODE:
		1552	SvREFCNT_dec (on_next_submit);
		1553	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1554
1816	PROTOTYPES: DISABLE	1555	PROTOTYPES: DISABLE
1817		1556
1818	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1557	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1819		1558
1820	void	1559	void
1821	cancel (aio_req_ornot req)	1560	cancel (aio_req_ornot req)
1822	CODE:	1561	CODE:
1823	req_cancel (req);	1562	eio_cancel (req);
1824		1563
1825	void	1564	void
1826	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1565	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1827	CODE:	1566	PPCODE:
		1567	{
		1568	if (GIMME_V != G_VOID)
		1569	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1570
		1571	if (items > 1)
		1572	{
		1573	SV *cb_cv =get_cb (callback);
		1574
1828	SvREFCNT_dec (req->callback);	1575	SvREFCNT_dec (req->callback);
1829	req->callback = newSVsv (callback);	1576	req->callback = SvREFCNT_inc (cb_cv);
		1577	}
		1578	}
1830		1579
1831	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1580	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1832		1581
1833	void	1582	void
1834	add (aio_req grp, ...)	1583	add (aio_req grp, ...)
1835	PPCODE:	1584	PPCODE:
1836	{	1585	{
1837	int i;	1586	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		1587
1843	if (grp->int1 == 2)	1588	if (grp->int1 == 2)
1844	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1589	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1845		1590
1846	for (i = 1; i < items; ++i )	1591	for (i = 1; i < items; ++i )
1847	{	1592	{
		1593	aio_req req;
		1594
1848	if (GIMME_V != G_VOID)	1595	if (GIMME_V != G_VOID)
1849	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1596	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1850		1597
1851	req = SvAIO_REQ (ST (i));	1598	req = SvAIO_REQ (ST (i));
1852		1599
1853	if (req)	1600	if (req)
1854	{	1601	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	}	1602	}
1867	}	1603	}
1868		1604
1869	void	1605	void
1870	cancel_subs (aio_req_ornot req)	1606	cancel_subs (aio_req_ornot req)
…		…
1879	AV *av;	1615	AV *av;
1880		1616
1881	grp->errorno = errno;	1617	grp->errorno = errno;
1882		1618
1883	av = newAV ();	1619	av = newAV ();
		1620	av_extend (av, items - 1);
1884		1621
1885	for (i = 1; i < items; ++i )	1622	for (i = 1; i < items; ++i )
1886	av_push (av, newSVsv (ST (i)));	1623	av_push (av, newSVsv (ST (i)));
1887		1624
1888	SvREFCNT_dec (grp->sv1);	1625	SvREFCNT_dec (grp->sv1);
…		…
1895	grp->errorno = errorno;	1632	grp->errorno = errorno;
1896		1633
1897	void	1634	void
1898	limit (aio_req grp, int limit)	1635	limit (aio_req grp, int limit)
1899	CODE:	1636	CODE:
1900	grp->int2 = limit;	1637	eio_grp_limit (grp, limit);
1901	aio_grp_feed (grp);
1902		1638
1903	void	1639	void
1904	feed (aio_req grp, SV *callback=&PL_sv_undef)	1640	feed (aio_req grp, SV *callback=&PL_sv_undef)
1905	CODE:	1641	CODE:
1906	{	1642	{
1907	SvREFCNT_dec (grp->sv2);	1643	SvREFCNT_dec (grp->sv2);
1908	grp->sv2 = newSVsv (callback);	1644	grp->sv2 = newSVsv (callback);
		1645	grp->feed = aio_grp_feed;
1909		1646
1910	if (grp->int2 <= 0)	1647	if (grp->int2 <= 0)
1911	grp->int2 = 2;	1648	grp->int2 = 2;
1912		1649
1913	aio_grp_feed (grp);	1650	eio_grp_limit (grp, grp->int2);
1914	}	1651	}
1915		1652

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