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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.90 by root, Tue Oct 31 00:32:19 2006 UTC vs.
Revision 1.172 by root, Sun Sep 12 03:36:27 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>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
27	#include <limits.h>	17	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	18	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	19	#include <sched.h>
32		20
33	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>	22	# include <sys/mman.h>
36	# elif __freebsd	23	#endif
37	# 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
38	# include <sys/uio.h>	68	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# 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
43	# else	217	# else
44	# error sendfile support requested but not available	218	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	219	# endif
46	#endif	220	#endif
47		221	#ifndef MAP_HUGETLB
48	/* number of seconds after which idle threads exit */	222	# define MAP_HUGETLB 0
49	#define IDLE_TIMEOUT 10
50
51	/* used for struct dirent, AIX doesn't provide it */
52	#ifndef NAME_MAX
53	# define NAME_MAX 4096
54	#endif
55
56	#ifndef PTHREAD_STACK_MIN
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	223	#endif
		224	#ifndef MAP_LOCKED
		225	# define MAP_LOCKED 0
79	#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
80		236
81	/* buffer size for various temporary buffers */	237	#ifndef PAGESIZE
82	#define AIO_BUFSIZE 65536	238	# define PAGESIZE sysconf (_SC_PAGESIZE)
		239	#endif
83		240
84	#define dBUF \	241	static int req_invoke (eio_req *req);
85	char *aio_buf; \	242	#define EIO_FINISH(req) req_invoke (req)
86	LOCK (wrklock); \	243	static void req_destroy (eio_req *grp);
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	244	#define EIO_DESTROY(req) req_destroy (req)
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	typedef SV SV8; /* byte-sv, used for argument-checking */
93		245
94	enum {	246	enum {
95	REQ_QUIT,	247	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
96	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
98	REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100	REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,
106	};	248	};
107		249
108	#define AIO_REQ_KLASS "IO::AIO::REQ"	250	#include "libeio/eio.c"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"
110		251
111	typedef struct aio_cb
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;
116	SV *sv1, *sv2;
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;
123	int type;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127
128	unsigned char flags;
129	unsigned char pri;
130
131	SV *self; /* the perl counterpart of this request, if any */
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
133	} aio_cb;
134
135	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};
140
141	typedef aio_cb *aio_req;	252	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	253	typedef eio_req *aio_req_ornot;
143		254
144	enum {	255	static SV *on_next_submit;
145	PRI_MIN = -4,	256	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	257	static int max_outstanding;
147		258
148	DEFAULT_PRI = 0,	259	static s_epipe respipe;
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152		260
153	#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155	static unsigned int max_poll_time = 0;
156	static unsigned int max_poll_reqs = 0;
157
158	/* calculcate time difference in ~1/AIO_TICKS of a second */
159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181	typedef struct worker {
182	/* locked by wrklock */
183	struct worker *prev, *next;
184
185	pthread_t tid;
186
187	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */
189	void *dbuf;
190	DIR *dirp;
191	} worker;
192
193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195	static void worker_clear (worker *wrk)
196	{
197	if (wrk->dirp)
198	{
199	closedir (wrk->dirp);
200	wrk->dirp = 0;
201	}
202
203	if (wrk->dbuf)
204	{
205	free (wrk->dbuf);
206	wrk->dbuf = 0;
207	}
208	}
209
210	static void worker_free (worker *wrk)
211	{
212	wrk->next->prev = wrk->prev;
213	wrk->prev->next = wrk->next;
214
215	free (wrk);
216	}
217
218	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];
222
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227	#if WORDACCESS_UNSAFE
228
229	static unsigned int get_nready ()
230	{
231	unsigned int retval;
232
233	LOCK (reqlock);
234	retval = nready;
235	UNLOCK (reqlock);
236
237	return retval;
238	}
239
240	static unsigned int get_npending ()
241	{
242	unsigned int retval;
243
244	LOCK (reslock);
245	retval = npending;
246	UNLOCK (reslock);
247
248	return retval;
249	}
250
251	static unsigned int get_nthreads ()
252	{
253	unsigned int retval;
254
255	LOCK (wrklock);
256	retval = started;
257	UNLOCK (wrklock);
258
259	return retval;
260	}
261
262	#else
263
264	# define get_nready() nready
265	# define get_npending() npending
266	# define get_nthreads() started
267
268	#endif
269
270	/*
271	* a somewhat faster data structure might be nice, but
272	* with 8 priorities this actually needs <20 insns
273	* per shift, the most expensive operation.
274	*/
275	typedef struct {
276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277	int size;
278	} reqq;
279
280	static reqq req_queue;
281	static reqq res_queue;
282
283	int reqq_push (reqq *q, aio_req req)
284	{
285	int pri = req->pri;
286	req->next = 0;
287
288	if (q->qe[pri])
289	{
290	q->qe[pri]->next = req;
291	q->qe[pri] = req;
292	}
293	else
294	q->qe[pri] = q->qs[pri] = req;
295
296	return q->size++;
297	}
298
299	aio_req reqq_shift (reqq *q)
300	{
301	int pri;
302
303	if (!q->size)
304	return 0;
305
306	--q->size;
307
308	for (pri = NUM_PRI; pri--; )
309	{
310	aio_req req = q->qs[pri];
311
312	if (req)
313	{
314	if (!(q->qs[pri] = req->next))
315	q->qe[pri] = 0;
316
317	return req;
318	}
319	}
320
321	abort ();
322	}
323
324	static int poll_cb ();
325	static void req_invoke (aio_req req);
326	static void req_free (aio_req req);	261	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	262	static void req_cancel (aio_req req);
328		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
329	/* must be called at most once */	276	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	277	static SV *req_sv (aio_req req, HV *stash)
331	{	278	{
332	if (!req->self)	279	if (!req->self)
333	{	280	{
334	req->self = (SV *)newHV ();	281	req->self = (SV *)newHV ();
335	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	282	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336	}	283	}
337		284
338	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	285	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339	}	286	}
340		287
341	static aio_req SvAIO_REQ (SV *sv)	288	static aio_req SvAIO_REQ (SV *sv)
342	{	289	{
343	MAGIC *mg;	290	MAGIC *mg;
344		291
345	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")))
346	croak ("object of class " AIO_REQ_KLASS " expected");	296	croak ("object of class IO::AIO::REQ expected");
347		297
348	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	298	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349		299
350	return mg ? (aio_req)mg->mg_ptr : 0;	300	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	301	}
352		302
353	static void aio_grp_feed (aio_req grp)	303	static void aio_grp_feed (aio_req grp)
354	{	304	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	305	if (grp->sv2 && SvOK (grp->sv2))
356	{	306	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	307	dSP;
362		308
363	ENTER;	309	ENTER;
364	SAVETMPS;	310	SAVETMPS;
365	PUSHMARK (SP);	311	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	312	XPUSHs (req_sv (grp, aio_grp_stash));
367	PUTBACK;	313	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	314	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	315	SPAGAIN;
370	FREETMPS;	316	FREETMPS;
371	LEAVE;	317	LEAVE;
372	}
373
374	/* stop if no progress has been made */
375	if (old_len == grp->size)
376	{
377	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;
379	break;
380	}
381	}	318	}
382	}	319	}
383		320
384	static void aio_grp_dec (aio_req grp)	321	static void req_submit (eio_req *req)
385	{	322	{
386	--grp->size;	323	eio_submit (req);
387		324
388	/* call feeder, if applicable */	325	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	326	{
394	req_invoke (grp);	327	dSP;
395	req_free (grp);	328	SV *cb = sv_2mortal (on_next_submit);
		329
		330	on_next_submit = 0;
		331
		332	PUSHMARK (SP);
		333	PUTBACK;
		334	call_sv (cb, G_DISCARD | G_EVAL);
396	}	335	}
397	}	336	}
398		337
399	static void req_invoke (aio_req req)	338	static int req_invoke (eio_req *req)
400	{	339	{
401	dSP;
402
403	if (req->flags & FLAG_SV1_RO_OFF)	340	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	341	SvREADONLY_off (req->sv2);
405		342
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	343	if (!EIO_CANCELLED (req) && req->callback)
407	{	344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
408	ENTER;	349	ENTER;
409	SAVETMPS;	350	SAVETMPS;
410	PUSHMARK (SP);	351	PUSHMARK (SP);
411	EXTEND (SP, 1);	352	EXTEND (SP, 1);
412		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
413	switch (req->type)	366	switch (req->type)
414	{	367	{
415	case REQ_READDIR:	368	case EIO_READDIR:
416	{	369	{
417	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
418		371
419	if (req->result >= 0)	372	if (req->result >= 0)
420	{	373	{
421	int i;	374	int i;
422	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423	AV *av = newAV ();	377	AV *av = newAV ();
424		378
425	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
426		380
427	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
428	{	382	{
429	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430		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
431	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);
432	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
433	}	417	}
434		418
435	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
436	}	420	}
437		421
438	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))));
439	}	426	}
440	break;	427	break;
441		428
442	case REQ_OPEN:	429	case EIO_OPEN:
443	{	430	{
444	/* convert fd to fh */	431	/* convert fd to fh */
445	SV *fh;	432	SV *fh = &PL_sv_undef;
446		433
447	PUSHs (sv_2mortal (newSViv (req->result)));	434	if (req->result >= 0)
448	PUTBACK;	435	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	436	GV *gv = (GV *)sv_newmortal ();
450	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);
451		443
452	fh = SvREFCNT_inc (POPs);	444	symlen = snprintf (
		445	sym,
		446	sizeof (sym),
		447	"%s&=%d",
		448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		449	(int)req->result
		450	);
453		451
		452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		453	fh = (SV *)gv;
		454	}
		455
454	PUSHMARK (SP);	456	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	457	}
457	break;	458	break;
458		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
459	case REQ_GROUP:	490	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
461		492
462	if (req->sv1)	493	if (req->sv1)
463	{	494	{
464	int i;	495	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
470	}	501	}
471	break;	502	break;
472		503
473	case REQ_NOP:	504	case EIO_NOP:
474	case REQ_BUSY:	505	case EIO_BUSY:
475	break;	506	break;
476		507
477	case REQ_READLINK:	508	case EIO_READLINK:
478	if (req->result > 0)	509	if (req->result > 0)
479	{	510	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480	SvCUR_set (req->sv1, req->result);
481	*SvEND (req->sv1) = 0;
482	PUSHs (req->sv1);
483	}
484	break;	511	break;
485		512
486	case REQ_STAT:	513	case EIO_STAT:
487	case REQ_LSTAT:	514	case EIO_LSTAT:
488	case REQ_FSTAT:	515	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
490	PL_laststatval = req->result;	517	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
493	break;	520	break;
494		521
495	case REQ_READ:	522	case EIO_READ:
		523	{
496	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));
497	*SvEND (req->sv1) = 0;	525	*SvEND (req->sv2) = 0;
498	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
499	break;	530	break;
500		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
501	default:	537	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
503	break;	539	break;
504	}	540	}
505		541
506	errno = req->errorno;	542	errno = req->errorno;
507		543
508	PUTBACK;	544	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	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;
511		552
512	FREETMPS;	553	FREETMPS;
513	LEAVE;	554	LEAVE;
		555
		556	PUTBACK;
514	}	557	}
515		558
516	if (req->grp)	559	return !!SvTRUE (ERRSV);
517	{
518	aio_req grp = req->grp;
519
520	/* unlink request */
521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524	if (grp->grp_first == req)
525	grp->grp_first = req->grp_next;
526
527	aio_grp_dec (grp);
528	}
529
530	if (SvTRUE (ERRSV))
531	{
532	req_free (req);
533	croak (0);
534	}
535	}	560	}
536		561
537	static void req_free (aio_req req)	562	static void req_destroy (aio_req req)
538	{	563	{
539	if (req->self)	564	if (req->self)
540	{	565	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	566	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	567	SvREFCNT_dec (req->self);
543	}	568	}
544		569
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
548	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
549		573
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	574	Safefree (req);
554	}	575	}
555		576
556	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
557	{	578	{
558	aio_req sub;	579	aio_req sub;
559		580
560	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
561	return;	582	return;
562		583
563	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	585	grp->sv2 = 0;
565		586
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	588	}
569		589
570	static void req_cancel (aio_req req)	590	static void
		591	create_respipe (void)
571	{	592	{
572	req->flags |= FLAG_CANCELLED;	593	if (s_epipe_renew (&respipe))
573		594	croak ("IO::AIO: unable to initialize result pipe");
574	req_cancel_subs (req);
575	}	595	}
576		596
577	static void *aio_proc(void *arg);
578
579	static void start_thread (void)
580	{
581	sigset_t fullsigset, oldsigset;
582	pthread_attr_t attr;
583
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	pthread_attr_init (&attr);
590	pthread_attr_setstacksize (&attr, STACKSIZE);
591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592	#ifdef PTHREAD_SCOPE_PROCESS
593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594	#endif
595
596	sigfillset (&fullsigset);
597
598	LOCK (wrklock);
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
602	{
603	wrk->prev = &wrk_first;
604	wrk->next = wrk_first.next;
605	wrk_first.next->prev = wrk;
606	wrk_first.next = wrk;
607	++started;
608	}
609	else
610	free (wrk);
611
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);
613	UNLOCK (wrklock);
614	}
615
616	static void maybe_start_thread ()
617	{
618	if (get_nthreads () >= wanted)
619	return;
620
621	/* todo: maybe use idle here, but might be less exact */
622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623	return;
624
625	start_thread ();
626	}
627
628	static void req_send (aio_req req)
629	{
630	++nreqs;
631
632	LOCK (reqlock);
633	++nready;
634	reqq_push (&req_queue, req);
635	pthread_cond_signal (&reqwait);
636	UNLOCK (reqlock);
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	pthread_cond_signal (&reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	597	static void poll_wait (void)
683	{	598	{
684	fd_set rfd;
685
686	while (nreqs)	599	while (eio_nreqs ())
687	{	600	{
688	int size;	601	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	602
		603	X_LOCK (reslock);
690	size = res_queue.size;	604	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	605	X_UNLOCK (reslock);
692		606
693	if (size)	607	if (size)
694	return;	608	return;
695		609
696	maybe_start_thread ();	610	etp_maybe_start_thread ();
697		611
698	FD_ZERO(&rfd);	612	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	613	}
703	}	614	}
704		615
705	static int poll_cb ()	616	static int poll_cb (void)
706	{	617	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	for (;;)	618	for (;;)
718	{	619	{
719	for (;;)	620	int res = eio_poll ();
720	{
721	maybe_start_thread ();
722		621
723	LOCK (reslock);	622	if (res > 0)
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{
728	--npending;
729
730	if (!res_queue.size)
731	{
732	/* read any signals sent by the worker threads */
733	char buf [32];
734	while (read (respipe [0], buf, 32) == 32)
735	;
736	}
737	}
738
739	UNLOCK (reslock);
740
741	if (!req)
742	break;
743
744	--nreqs;
745
746	if (req->type == REQ_GROUP && req->size)
747	{
748	req->int1 = 1; /* mark request as delayed */
749	continue;
750	}
751	else
752	{
753	req_invoke (req);
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;	623	croak (0);
		624
		625	if (!max_outstanding || max_outstanding > eio_nreqs ())
		626	return res;
774		627
775	poll_wait ();	628	poll_wait ();
776
777	++maxreqs;
778	}	629	}
779
780	return count;
781	}	630	}
782		631
783	static void create_pipe ()	632	static void atfork_child (void)
784	{	633	{
785	if (pipe (respipe))	634	create_respipe ();
786	croak ("unable to initialize result pipe");
787
788	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790
791	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792	croak ("cannot set result pipe to nonblocking mode");
793	}	635	}
794		636
795	/*****************************************************************************/	637	/*****************************************************************************/
796	/* work around various missing functions */
797		638
798	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
799	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
800	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
801		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
802	/*
803	* make our pread/pwrite safe against themselves, but not against
804	* normal read/write by using a mutex. slows down execution a lot,
805	* but that's your problem, not mine.
806	*/
807	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810	{
811	ssize_t res;
812	off_t ooffset;
813
814	LOCK (preadwritelock);
815	ooffset = lseek (fd, 0, SEEK_CUR);
816	lseek (fd, offset, SEEK_SET);
817	res = read (fd, buf, count);
818	lseek (fd, ooffset, SEEK_SET);
819	UNLOCK (preadwritelock);
820
821	return res;
822	}
823
824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825	{
826	ssize_t res;
827	off_t ooffset;
828
829	LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);
832	res = write (fd, buf, count);
833	lseek (fd, offset, SEEK_SET);
834	UNLOCK (preadwritelock);
835
836	return res;
837	}
838	#endif
839
840	#if !HAVE_FDATASYNC
841	# define fdatasync fsync
842	#endif
843
844	#if !HAVE_READAHEAD
845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848	{
849	dBUF;
850
851	while (count > 0)
852	{
853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855	pread (fd, aio_buf, len, offset);
856	offset += len;
857	count -= len;
858	}
859
860	errno = 0;
861	}
862
863	#endif
864
865	#if !HAVE_READDIR_R
866	# define readdir_r aio_readdir_r
867
868	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871	{
872	struct dirent *e;
873	int errorno;
874
875	LOCK (readdirlock);
876
877	e = readdir (dirp);
878	errorno = errno;
879
880	if (e)
881	{
882	*res = ent;
883	strcpy (ent->d_name, e->d_name);
884	}
885	else
886	*res = 0;
887
888	UNLOCK (readdirlock);
889
890	errno = errorno;
891	return e ? 0 : -1;
892	}
893	#endif
894
895	/* sendfile always needs emulation */
896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897	{
898	ssize_t res;
899
900	if (!count)
901	return 0;
902
903	#if HAVE_SENDFILE
904	# if __linux
905	res = sendfile (ofd, ifd, &offset, count);
906
907	# elif __freebsd
908	/*
909	* Of course, the freebsd sendfile is a dire hack with no thoughts
910	* wasted on making it similar to other I/O functions.
911	*/
912	{
913	off_t sbytes;
914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916	if (res < 0 && sbytes)
917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918	res = sbytes;
919	}
920
921	# elif __hpux
922	res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924	# elif __solaris
925	{
926	struct sendfilevec vec;
927	size_t sbytes;
928
929	vec.sfv_fd = ifd;
930	vec.sfv_flag = 0;
931	vec.sfv_off = offset;
932	vec.sfv_len = count;
933
934	res = sendfilev (ofd, &vec, 1, &sbytes);
935
936	if (res < 0 && sbytes)
937	res = sbytes;
938	}
939
940	# endif	643	#endif
941	#else
942	res = -1;
943	errno = ENOSYS;
944	#endif
945		644
946	if (res < 0	645	#define MMAP_MAGIC PERL_MAGIC_ext
947	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948	#if __solaris
949	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
950	#endif
951	)
952	)
953	{
954	/* emulate sendfile. this is a major pain in the ass */
955	dBUF;
956		646
957	res = 0;	647	static int
		648	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		649	{
		650	int old_errno = errno;
		651	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		652	errno = old_errno;
958		653
959	while (count)	654	mg->mg_obj = 0; /* just in case */
960	{
961	ssize_t cnt;
962
963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964		655
965	if (cnt <= 0)	656	SvREADONLY_off (sv);
966	{
967	if (cnt && !res) res = -1;
968	break;
969	}
970		657
971	cnt = write (ofd, aio_buf, cnt);	658	if (SvPVX (sv) != mg->mg_ptr)
		659	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
972		660
973	if (cnt <= 0)	661	SvCUR_set (sv, 0);
974	{	662	SvPVX (sv) = 0;
975	if (cnt && !res) res = -1;	663	SvOK_off (sv);
976	break;
977	}
978		664
979	offset += cnt;
980	res += cnt;
981	count -= cnt;
982	}
983	}
984
985	return res;	665	return 0;
986	}	666	}
987		667
988	/* read a full directory */	668	static MGVTBL mmap_vtbl = {
989	static void scandir_ (aio_req req, worker *self)	669	0, 0, 0, 0, mmap_free
990	{	670	};
991	DIR *dirp;
992	union
993	{
994	struct dirent d;
995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996	} *u;
997	struct dirent *entp;
998	char *name, *names;
999	int memlen = 4096;
1000	int memofs = 0;
1001	int res = 0;
1002	int errorno;
1003
1004	LOCK (wrklock);
1005	self->dirp = dirp = opendir (req->ptr1);
1006	self->dbuf = u = malloc (sizeof (*u));
1007	req->flags |= FLAG_PTR2_FREE;
1008	req->ptr2 = names = malloc (memlen);
1009	UNLOCK (wrklock);
1010
1011	if (dirp && u && names)
1012	for (;;)
1013	{
1014	errno = 0;
1015	readdir_r (dirp, &u->d, &entp);
1016
1017	if (!entp)
1018	break;
1019
1020	name = entp->d_name;
1021
1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023	{
1024	int len = strlen (name) + 1;
1025
1026	res++;
1027
1028	while (memofs + len > memlen)
1029	{
1030	memlen *= 2;
1031	LOCK (wrklock);
1032	req->ptr2 = names = realloc (names, memlen);
1033	UNLOCK (wrklock);
1034
1035	if (!names)
1036	break;
1037	}
1038
1039	memcpy (names + memofs, name, len);
1040	memofs += len;
1041	}
1042	}
1043
1044	if (errno)
1045	res = -1;
1046
1047	req->result = res;
1048	}
1049		671
1050	/*****************************************************************************/	672	/*****************************************************************************/
1051		673
1052	static void *aio_proc (void *thr_arg)	674	static SV *
		675	get_cb (SV *cb_sv)
1053	{	676	{
1054	aio_req req;	677	SvGETMAGIC (cb_sv);
1055	struct timespec ts;	678	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1056	worker *self = (worker *)thr_arg;
1057
1058	/* try to distribute timeouts somewhat evenly */
1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060	* (1000000000UL / 1024UL);
1061
1062	for (;;)
1063	{
1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066	LOCK (reqlock);
1067
1068	for (;;)
1069	{
1070	self->req = req = reqq_shift (&req_queue);
1071
1072	if (req)
1073	break;
1074
1075	++idle;
1076
1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078	== ETIMEDOUT)
1079	{
1080	if (idle > max_idle)
1081	{
1082	--idle;
1083	UNLOCK (reqlock);
1084	LOCK (wrklock);
1085	--started;
1086	UNLOCK (wrklock);
1087	goto quit;
1088	}
1089
1090	/* we are allowed to idle, so do so without any timeout */
1091	pthread_cond_wait (&reqwait, &reqlock);
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093	}
1094
1095	--idle;
1096	}
1097
1098	--nready;
1099
1100	UNLOCK (reqlock);
1101
1102	errno = 0; /* strictly unnecessary */
1103
1104	if (!(req->flags & FLAG_CANCELLED))
1105	switch (req->type)
1106	{
1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118	case REQ_CLOSE: req->result = close (req->int1); break;
1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
1129	case REQ_READDIR: scandir_ (req, self); break;
1130
1131	case REQ_BUSY:
1132	{
1133	struct timeval tv;
1134
1135	tv.tv_sec = req->int1;
1136	tv.tv_usec = req->int2;
1137
1138	req->result = select (0, 0, 0, 0, &tv);
1139	}
1140
1141	case REQ_GROUP:
1142	case REQ_NOP:
1143	break;
1144
1145	case REQ_QUIT:
1146	goto quit;
1147
1148	default:
1149	req->result = ENOSYS;
1150	break;
1151	}
1152
1153	req->errorno = errno;
1154
1155	LOCK (reslock);
1156
1157	++npending;
1158
1159	if (!reqq_push (&res_queue, req))
1160	/* write a dummy byte to the pipe so fh becomes ready */
1161	write (respipe [1], &respipe, 1);
1162
1163	self->req = 0;
1164	worker_clear (self);
1165
1166	UNLOCK (reslock);
1167	}
1168
1169	quit:
1170	LOCK (wrklock);
1171	worker_free (self);
1172	UNLOCK (wrklock);
1173
1174	return 0;
1175	}
1176
1177	/*****************************************************************************/
1178
1179	static void atfork_prepare (void)
1180	{
1181	LOCK (wrklock);
1182	LOCK (reqlock);
1183	LOCK (reslock);
1184	#if !HAVE_PREADWRITE
1185	LOCK (preadwritelock);
1186	#endif
1187	#if !HAVE_READDIR_R
1188	LOCK (readdirlock);
1189	#endif
1190	}
1191
1192	static void atfork_parent (void)
1193	{
1194	#if !HAVE_READDIR_R
1195	UNLOCK (readdirlock);
1196	#endif
1197	#if !HAVE_PREADWRITE
1198	UNLOCK (preadwritelock);
1199	#endif
1200	UNLOCK (reslock);
1201	UNLOCK (reqlock);
1202	UNLOCK (wrklock);
1203	}
1204
1205	static void atfork_child (void)
1206	{
1207	aio_req prv;
1208
1209	while (prv = reqq_shift (&req_queue))
1210	req_free (prv);
1211
1212	while (prv = reqq_shift (&res_queue))
1213	req_free (prv);
1214
1215	while (wrk_first.next != &wrk_first)
1216	{
1217	worker *wrk = wrk_first.next;
1218
1219	if (wrk->req)
1220	req_free (wrk->req);
1221
1222	worker_clear (wrk);
1223	worker_free (wrk);
1224	}
1225
1226	started = 0;
1227	idle = 0;
1228	nreqs = 0;
1229	nready = 0;
1230	npending = 0;
1231
1232	close (respipe [0]);
1233	close (respipe [1]);
1234	create_pipe ();
1235
1236	atfork_parent ();
1237	}	679	}
1238		680
1239	#define dREQ \	681	#define dREQ \
		682	SV *cb_cv; \
1240	aio_req req; \	683	aio_req req; \
1241	int req_pri = next_pri; \	684	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \	685	next_pri = EIO_PRI_DEFAULT; \
1243	\	686	\
1244	if (SvOK (callback) && !SvROK (callback)) \	687	cb_cv = get_cb (callback); \
1245	croak ("callback must be undef or of reference type"); \
1246	\	688	\
1247	Newz (0, req, 1, aio_cb); \	689	Newz (0, req, 1, eio_req); \
1248	if (!req) \	690	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \	691	croak ("out of memory during eio_req allocation"); \
1250	\	692	\
1251	req->callback = newSVsv (callback); \	693	req->callback = SvREFCNT_inc (cb_cv); \
1252	req->pri = req_pri	694	req->pri = req_pri
1253		695
1254	#define REQ_SEND \	696	#define REQ_SEND \
		697	PUTBACK; \
1255	req_send (req); \	698	req_submit (req); \
		699	SPAGAIN; \
1256	\	700	\
1257	if (GIMME_V != G_VOID) \	701	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));	702	XPUSHs (req_sv (req, aio_req_stash));
1259		703
1260	MODULE = IO::AIO PACKAGE = IO::AIO	704	MODULE = IO::AIO PACKAGE = IO::AIO
1261		705
1262	PROTOTYPES: ENABLE	706	PROTOTYPES: ENABLE
1263		707
1264	BOOT:	708	BOOT:
1265	{	709	{
		710	static const struct {
		711	const char *name;
		712	IV iv;
		713	} *civ, const_iv[] = {
		714	# define const_niv(name, value) { # name, (IV) value },
		715	# define const_iv(name) { # name, (IV) name },
		716	# define const_eio(name) { # name, (IV) EIO_ ## name },
		717	const_iv (EXDEV)
		718	const_iv (ENOSYS)
		719	const_iv (O_RDONLY)
		720	const_iv (O_WRONLY)
		721	const_iv (O_RDWR)
		722	const_iv (O_CREAT)
		723	const_iv (O_TRUNC)
		724	const_iv (O_EXCL)
		725	const_iv (O_APPEND)
		726	#ifndef _WIN32
		727	const_iv (S_IFIFO)
		728	#endif
		729	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		730	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		731	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		732	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		733	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		734	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		735
		736	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		737	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		738	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		739	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		740	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		741
		742	const_iv (ST_RDONLY)
		743	const_iv (ST_NOSUID)
		744	const_iv (ST_NODEV)
		745	const_iv (ST_NOEXEC)
		746	const_iv (ST_SYNCHRONOUS)
		747	const_iv (ST_MANDLOCK)
		748	const_iv (ST_WRITE)
		749	const_iv (ST_APPEND)
		750	const_iv (ST_IMMUTABLE)
		751	const_iv (ST_NOATIME)
		752	const_iv (ST_NODIRATIME)
		753	const_iv (ST_RELATIME)
		754
		755	const_iv (PROT_NONE)
		756	const_iv (PROT_EXEC)
		757	const_iv (PROT_READ)
		758	const_iv (PROT_WRITE)
		759
		760	/*const_iv (MAP_FIXED)*/
		761	const_iv (MAP_PRIVATE)
		762	const_iv (MAP_SHARED)
		763	const_iv (MAP_ANONYMOUS)
		764
		765	/* linuxish */
		766	const_iv (MAP_HUGETLB)
		767	const_iv (MAP_LOCKED)
		768	const_iv (MAP_NORESERVE)
		769	const_iv (MAP_POPULATE)
		770	const_iv (MAP_NONBLOCK)
		771
		772	const_eio (MCL_FUTURE)
		773	const_eio (MCL_CURRENT)
		774
		775	const_eio (MS_ASYNC)
		776	const_eio (MS_INVALIDATE)
		777	const_eio (MS_SYNC)
		778
		779	const_eio (MT_MODIFY)
		780
		781	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		782	const_eio (SYNC_FILE_RANGE_WRITE)
		783	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		784
		785	const_eio (READDIR_DENTS)
		786	const_eio (READDIR_DIRS_FIRST)
		787	const_eio (READDIR_STAT_ORDER)
		788	const_eio (READDIR_FOUND_UNKNOWN)
		789
		790	const_eio (DT_UNKNOWN)
		791	const_eio (DT_FIFO)
		792	const_eio (DT_CHR)
		793	const_eio (DT_DIR)
		794	const_eio (DT_BLK)
		795	const_eio (DT_REG)
		796	const_eio (DT_LNK)
		797	const_eio (DT_SOCK)
		798	const_eio (DT_WHT)
		799	};
		800
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	801	aio_stash = gv_stashpv ("IO::AIO" , 1);
		802	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		803	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1267		804
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	805	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	806	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274		807
		808	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		809
1275	create_pipe ();	810	create_respipe ();
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	811
		812	if (eio_init (want_poll, done_poll) < 0)
		813	croak ("IO::AIO: unable to initialise eio library");
		814
		815	/* atfork child called in fifo order, so before eio's handler */
		816	X_THREAD_ATFORK (0, 0, atfork_child);
1277	}	817	}
1278		818
1279	void	819	void
1280	max_poll_reqs (int nreqs)	820	max_poll_reqs (int nreqs)
1281	PROTOTYPE: $	821	PROTOTYPE: $
1282	CODE:	822	CODE:
1283	max_poll_reqs = nreqs;	823	eio_set_max_poll_reqs (nreqs);
1284		824
1285	void	825	void
1286	max_poll_time (double nseconds)	826	max_poll_time (double nseconds)
1287	PROTOTYPE: $	827	PROTOTYPE: $
1288	CODE:	828	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	829	eio_set_max_poll_time (nseconds);
1290		830
1291	void	831	void
1292	min_parallel (int nthreads)	832	min_parallel (int nthreads)
1293	PROTOTYPE: $	833	PROTOTYPE: $
		834	CODE:
		835	eio_set_min_parallel (nthreads);
1294		836
1295	void	837	void
1296	max_parallel (int nthreads)	838	max_parallel (int nthreads)
1297	PROTOTYPE: $	839	PROTOTYPE: $
		840	CODE:
		841	eio_set_max_parallel (nthreads);
1298		842
1299	void	843	void
1300	max_idle (int nthreads)	844	max_idle (int nthreads)
1301	PROTOTYPE: $	845	PROTOTYPE: $
1302	CODE:	846	CODE:
1303	set_max_idle (nthreads);	847	eio_set_max_idle (nthreads);
1304		848
1305	int	849	void
1306	max_outstanding (int maxreqs)	850	max_outstanding (int maxreqs)
1307	PROTOTYPE: $	851	PROTOTYPE: $
1308	CODE:	852	CODE:
1309	RETVAL = max_outstanding;
1310	max_outstanding = maxreqs;	853	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		854
1314	void	855	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	856	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$
1321	PPCODE:	857	PPCODE:
1322	{	858	{
1323	dREQ;	859	dREQ;
1324		860
1325	req->type = REQ_OPEN;	861	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	862	req->sv1 = newSVsv (pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);	863	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	864	req->int1 = flags;
1329	req->mode = mode;	865	req->int2 = mode;
1330		866
1331	REQ_SEND;	867	REQ_SEND;
1332	}	868	}
1333		869
1334	void	870	void
1335	aio_close (fh,callback=&PL_sv_undef)	871	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$
1339	ALIAS:	872	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	873	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	874	aio_fdatasync = EIO_FDATASYNC
1343	PPCODE:	875	PPCODE:
1344	{	876	{
		877	int fd = s_fileno_croak (fh, 0);
1345	dREQ;	878	dREQ;
1346		879
1347	req->type = ix;	880	req->type = ix;
1348	req->fh = newSVsv (fh);	881	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	882	req->int1 = fd;
1350		883
1351	REQ_SEND (req);	884	REQ_SEND (req);
1352	}	885	}
1353		886
1354	void	887	void
		888	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		889	PPCODE:
		890	{
		891	int fd = s_fileno_croak (fh, 0);
		892	dREQ;
		893
		894	req->type = EIO_SYNC_FILE_RANGE;
		895	req->sv1 = newSVsv (fh);
		896	req->int1 = fd;
		897	req->offs = offset;
		898	req->size = nbytes;
		899	req->int2 = flags;
		900
		901	REQ_SEND (req);
		902	}
		903
		904	void
		905	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		906	PPCODE:
		907	{
		908	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		909	int fd = s_fileno_croak (fh, 0);
		910	dREQ;
		911
		912	if (close_pipe < 0)
		913	{
		914	int pipefd [2];
		915
		916	if (pipe (pipefd) < 0
		917	|| close (pipefd [1]) < 0
		918	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		919	abort (); /*D*/
		920
		921	close_pipe = pipefd [0];
		922	}
		923
		924	req->type = EIO_DUP2;
		925	req->int1 = close_pipe;
		926	req->sv2 = newSVsv (fh);
		927	req->int2 = fd;
		928
		929	REQ_SEND (req);
		930	}
		931
		932	void
1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	933	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	934	ALIAS:
1363	aio_read = REQ_READ	935	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	936	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$
1366	PPCODE:	937	PPCODE:
1367	{	938	{
1368	STRLEN svlen;	939	STRLEN svlen;
		940	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369	char *svptr = SvPVbyte (data, svlen);	941	char *svptr = SvPVbyte (data, svlen);
1370		942	UV len = SvUV (length);
1371	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);
1373		943
1374	if (dataoffset < 0)	944	if (dataoffset < 0)
1375	dataoffset += svlen;	945	dataoffset += svlen;
1376		946
1377	if (dataoffset < 0 || dataoffset > svlen)	947	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	948	croak ("dataoffset outside of data scalar");
1379		949
1380	if (ix == REQ_WRITE)	950	if (ix == EIO_WRITE)
1381	{	951	{
1382	/* write: check length and adjust. */	952	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	953	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	954	len = svlen - dataoffset;
1385	}	955	}
1386	else	956	else
1387	{	957	{
1388	/* read: grow scalar as necessary */	958	/* read: check type and grow scalar as necessary */
		959	SvUPGRADE (data, SVt_PV);
1389	svptr = SvGROW (data, length + dataoffset);	960	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	961	}
1391
1392	if (length < 0)
1393	croak ("length must not be negative");
1394		962
1395	{	963	{
1396	dREQ;	964	dREQ;
1397		965
1398	req->type = ix;	966	req->type = ix;
1399	req->fh = newSVsv (fh);	967	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	968	req->int1 = fd;
1401	: IoOFP (sv_2io (fh)));	969	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->offs = offset;
1403	req->size = length;	970	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	971	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	972	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	973	req->stroffset = dataoffset;
1407		974
1408	if (!SvREADONLY (data))	975	if (!SvREADONLY (data))
1409	{	976	{
1410	SvREADONLY_on (data);	977	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	978	req->flags |= FLAG_SV2_RO_OFF;
1412	}	979	}
1413		980
1414	REQ_SEND;	981	REQ_SEND;
1415	}	982	}
1416	}	983	}
1417		984
1418	void	985	void
1419	aio_readlink (path,callback=&PL_sv_undef)	986	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1420	SV8 * path
1421	SV * callback
1422	PROTOTYPE: $$;$
1423	PPCODE:	987	PPCODE:
1424	{	988	{
1425	SV *data;	989	SV *data;
1426	dREQ;	990	dREQ;
1427		991
1428	data = newSV (NAME_MAX);
1429	SvPOK_on (data);
1430
1431	req->type = REQ_READLINK;	992	req->type = EIO_READLINK;
1432	req->fh = newSVsv (path);	993	req->sv1 = newSVsv (path);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->sv1 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);
1436		995
1437	REQ_SEND;	996	REQ_SEND;
1438	}	997	}
1439		998
1440	void	999	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1000	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$
1448	PPCODE:	1001	PPCODE:
1449	{	1002	{
		1003	int ifd = s_fileno_croak (in_fh , 0);
		1004	int ofd = s_fileno_croak (out_fh, 1);
1450	dREQ;	1005	dREQ;
1451		1006
1452	req->type = REQ_SENDFILE;	1007	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	1008	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1009	req->int1 = ofd;
1455	req->sv2 = newSVsv (in_fh);	1010	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1011	req->int2 = ifd;
1457	req->offs = in_offset;	1012	req->offs = in_offset;
1458	req->size = length;	1013	req->size = length;
1459		1014
1460	REQ_SEND;	1015	REQ_SEND;
1461	}	1016	}
1462		1017
1463	void	1018	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1019	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$
1470	PPCODE:	1020	PPCODE:
1471	{	1021	{
		1022	int fd = s_fileno_croak (fh, 0);
1472	dREQ;	1023	dREQ;
1473		1024
1474	req->type = REQ_READAHEAD;	1025	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	1026	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1027	req->int1 = fd;
1477	req->offs = offset;	1028	req->offs = offset;
1478	req->size = length;	1029	req->size = length;
1479		1030
1480	REQ_SEND;	1031	REQ_SEND;
1481	}	1032	}
1482		1033
1483	void	1034	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	1035	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	1036	ALIAS:
1488	aio_stat = REQ_STAT	1037	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	1038	aio_lstat = EIO_LSTAT
		1039	aio_statvfs = EIO_STATVFS
1490	PPCODE:	1040	PPCODE:
1491	{	1041	{
1492	dREQ;	1042	dREQ;
1493		1043
1494	req->ptr2 = malloc (sizeof (Stat_t));	1044	req->sv1 = newSVsv (fh_or_path);
1495	if (!req->ptr2)
1496	{
1497	req_free (req);
1498	croak ("out of memory during aio_stat statdata allocation");
1499	}
1500		1045
1501	req->flags |= FLAG_PTR2_FREE;	1046	if (SvPOK (req->sv1))
1502
1503	if (SvPOK (fh_or_path))
1504	{	1047	{
1505	req->type = ix;	1048	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);	1049	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}	1050	}
1509	else	1051	else
1510	{	1052	{
1511	req->type = REQ_FSTAT;	1053	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1054	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}	1055	}
1515		1056
1516	REQ_SEND;	1057	REQ_SEND;
1517	}	1058	}
1518		1059
1519	void	1060	void
		1061	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1062	PPCODE:
		1063	{
		1064	dREQ;
		1065
		1066	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1067	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1068	req->sv1 = newSVsv (fh_or_path);
		1069
		1070	if (SvPOK (req->sv1))
		1071	{
		1072	req->type = EIO_UTIME;
		1073	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1074	}
		1075	else
		1076	{
		1077	req->type = EIO_FUTIME;
		1078	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1079	}
		1080
		1081	REQ_SEND;
		1082	}
		1083
		1084	void
		1085	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1086	PPCODE:
		1087	{
		1088	dREQ;
		1089
		1090	req->sv1 = newSVsv (fh_or_path);
		1091	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1092
		1093	if (SvPOK (req->sv1))
		1094	{
		1095	req->type = EIO_TRUNCATE;
		1096	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1097	}
		1098	else
		1099	{
		1100	req->type = EIO_FTRUNCATE;
		1101	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1102	}
		1103
		1104	REQ_SEND;
		1105	}
		1106
		1107	void
		1108	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1109	ALIAS:
		1110	aio_chmod = EIO_CHMOD
		1111	aio_mkdir = EIO_MKDIR
		1112	PPCODE:
		1113	{
		1114	dREQ;
		1115
		1116	req->int2 = mode;
		1117	req->sv1 = newSVsv (fh_or_path);
		1118
		1119	if (SvPOK (req->sv1))
		1120	{
		1121	req->type = ix;
		1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1123	}
		1124	else
		1125	{
		1126	req->type = EIO_FCHMOD;
		1127	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1128	}
		1129
		1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	dREQ;
		1138
		1139	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1140	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1141	req->sv1 = newSVsv (fh_or_path);
		1142
		1143	if (SvPOK (req->sv1))
		1144	{
		1145	req->type = EIO_CHOWN;
		1146	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1147	}
		1148	else
		1149	{
		1150	req->type = EIO_FCHOWN;
		1151	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1152	}
		1153
		1154	REQ_SEND;
		1155	}
		1156
		1157	void
		1158	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1159	PPCODE:
		1160	{
		1161	dREQ;
		1162
		1163	req->type = EIO_READDIR;
		1164	req->sv1 = newSVsv (pathname);
		1165	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1166	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1167
		1168	if (flags & EIO_READDIR_DENTS)
		1169	req->int1 |= EIO_READDIR_CUSTOM2;
		1170
		1171	REQ_SEND;
		1172	}
		1173
		1174	void
1520	aio_unlink (pathname,callback=&PL_sv_undef)	1175	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	1176	ALIAS:
1524	aio_unlink = REQ_UNLINK	1177	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	1178	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	1179	aio_readdir = EIO_READDIR
1527	PPCODE:	1180	PPCODE:
1528	{	1181	{
1529	dREQ;	1182	dREQ;
1530		1183
1531	req->type = ix;	1184	req->type = ix;
…		…
1534		1187
1535	REQ_SEND;	1188	REQ_SEND;
1536	}	1189	}
1537		1190
1538	void	1191	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1192	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	1193	ALIAS:
1544	aio_link = REQ_LINK	1194	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	1195	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	1196	aio_rename = EIO_RENAME
1547	PPCODE:	1197	PPCODE:
1548	{	1198	{
1549	dREQ;	1199	dREQ;
1550		1200
1551	req->type = ix;	1201	req->type = ix;
1552	req->fh = newSVsv (oldpath);	1202	req->sv1 = newSVsv (oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1554	req->sv1 = newSVsv (newpath);
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);	1203	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1204	req->sv2 = newSVsv (newpath);
		1205	req->ptr2 = SvPVbyte_nolen (req->sv2);
1556		1206
1557	REQ_SEND;	1207	REQ_SEND;
1558	}	1208	}
1559		1209
1560	void	1210	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1211	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562	SV8 * pathname
1563	SV * callback
1564	UV mode
1565	UV dev
1566	PPCODE:	1212	PPCODE:
1567	{	1213	{
1568	dREQ;	1214	dREQ;
1569		1215
1570	req->type = REQ_MKNOD;	1216	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);	1217	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1218	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	1219	req->int2 = (mode_t)mode;
1574	req->offs = dev;	1220	req->offs = dev;
1575		1221
1576	REQ_SEND;	1222	REQ_SEND;
1577	}	1223	}
1578		1224
1579	void	1225	void
		1226	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1227	ALIAS:
		1228	aio_mtouch = EIO_MTOUCH
		1229	aio_msync = EIO_MSYNC
		1230	PPCODE:
		1231	{
		1232	STRLEN svlen;
		1233	char *svptr = SvPVbyte (data, svlen);
		1234	UV len = SvUV (length);
		1235
		1236	if (offset < 0)
		1237	offset += svlen;
		1238
		1239	if (offset < 0 || offset > svlen)
		1240	croak ("offset outside of scalar");
		1241
		1242	if (!SvOK (length) || len + offset > svlen)
		1243	len = svlen - offset;
		1244
		1245	{
		1246	dREQ;
		1247
		1248	req->type = ix;
		1249	req->sv2 = SvREFCNT_inc (data);
		1250	req->ptr2 = (char *)svptr + offset;
		1251	req->size = len;
		1252	req->int1 = flags;
		1253
		1254	REQ_SEND;
		1255	}
		1256	}
		1257
		1258	void
		1259	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1260	PPCODE:
		1261	{
		1262
		1263	STRLEN svlen;
		1264	char *svptr = SvPVbyte (data, svlen);
		1265	UV len = SvUV (length);
		1266
		1267	if (offset < 0)
		1268	offset += svlen;
		1269
		1270	if (offset < 0 || offset > svlen)
		1271	croak ("offset outside of scalar");
		1272
		1273	if (!SvOK (length) || len + offset > svlen)
		1274	len = svlen - offset;
		1275
		1276	{
		1277	dREQ;
		1278
		1279	req->type = EIO_MLOCK;
		1280	req->sv2 = SvREFCNT_inc (data);
		1281	req->ptr2 = (char *)svptr + offset;
		1282	req->size = len;
		1283
		1284	REQ_SEND;
		1285	}
		1286	}
		1287
		1288	void
		1289	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1290	PPCODE:
		1291	{
		1292	dREQ;
		1293
		1294	req->type = EIO_MLOCKALL;
		1295	req->int1 = flags;
		1296
		1297	REQ_SEND;
		1298	}
		1299
		1300	void
1580	aio_busy (delay,callback=&PL_sv_undef)	1301	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	1302	PPCODE:
1584	{	1303	{
1585	dREQ;	1304	dREQ;
1586		1305
1587	req->type = REQ_BUSY;	1306	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	1307	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		1308
1591	REQ_SEND;	1309	REQ_SEND;
1592	}	1310	}
1593		1311
1594	void	1312	void
1595	aio_group (callback=&PL_sv_undef)	1313	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$
1598	PPCODE:	1314	PPCODE:
1599	{	1315	{
1600	dREQ;	1316	dREQ;
1601		1317
1602	req->type = REQ_GROUP;	1318	req->type = EIO_GROUP;
1603		1319
1604	req_send (req);	1320	req_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1321	XPUSHs (req_sv (req, aio_grp_stash));
1606	}	1322	}
1607		1323
1608	void	1324	void
1609	aio_nop (callback=&PL_sv_undef)	1325	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	1326	ALIAS:
		1327	aio_nop = EIO_NOP
		1328	aio_sync = EIO_SYNC
1611	PPCODE:	1329	PPCODE:
1612	{	1330	{
1613	dREQ;	1331	dREQ;
1614		1332
1615	req->type = REQ_NOP;	1333	req->type = ix;
1616		1334
1617	REQ_SEND;	1335	REQ_SEND;
1618	}	1336	}
1619		1337
1620	int	1338	int
1621	aioreq_pri (int pri = 0)	1339	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$
1623	CODE:	1340	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	1341	RETVAL = next_pri;
1625	if (items > 0)	1342	if (items > 0)
1626	{	1343	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	1344	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	1345	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	1346	next_pri = pri;
1630	}	1347	}
1631	OUTPUT:	1348	OUTPUT:
1632	RETVAL	1349	RETVAL
1633		1350
1634	void	1351	void
1635	aioreq_nice (int nice = 0)	1352	aioreq_nice (int nice = 0)
1636	CODE:	1353	CODE:
1637	nice = next_pri - nice;	1354	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	1355	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	1356	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	1357	next_pri = nice;
1641		1358
1642	void	1359	void
1643	flush ()	1360	flush ()
1644	PROTOTYPE:
1645	CODE:	1361	CODE:
1646	while (nreqs)	1362	while (eio_nreqs ())
1647	{	1363	{
1648	poll_wait ();	1364	poll_wait ();
1649	poll_cb (0);	1365	poll_cb ();
1650	}	1366	}
1651		1367
1652	void	1368	int
1653	poll()	1369	poll ()
1654	PROTOTYPE:
1655	CODE:	1370	CODE:
1656	if (nreqs)
1657	{
1658	poll_wait ();	1371	poll_wait ();
1659	poll_cb (0);	1372	RETVAL = poll_cb ();
1660	}
1661
1662	int
1663	poll_fileno()
1664	PROTOTYPE:
1665	CODE:
1666	RETVAL = respipe [0];
1667	OUTPUT:	1373	OUTPUT:
1668	RETVAL	1374	RETVAL
1669		1375
1670	int	1376	int
		1377	poll_fileno ()
		1378	CODE:
		1379	RETVAL = s_epipe_fd (&respipe);
		1380	OUTPUT:
		1381	RETVAL
		1382
		1383	int
1671	poll_cb(...)	1384	poll_cb (...)
1672	PROTOTYPE:	1385	PROTOTYPE:
1673	CODE:	1386	CODE:
1674	RETVAL = poll_cb ();	1387	RETVAL = poll_cb ();
1675	OUTPUT:	1388	OUTPUT:
1676	RETVAL	1389	RETVAL
1677		1390
1678	void	1391	void
1679	poll_wait()	1392	poll_wait ()
1680	PROTOTYPE:
1681	CODE:	1393	CODE:
1682	if (nreqs)
1683	poll_wait ();	1394	poll_wait ();
1684		1395
1685	int	1396	int
1686	nreqs()	1397	nreqs ()
1687	PROTOTYPE:
1688	CODE:	1398	CODE:
1689	RETVAL = nreqs;	1399	RETVAL = eio_nreqs ();
1690	OUTPUT:	1400	OUTPUT:
1691	RETVAL	1401	RETVAL
1692		1402
1693	int	1403	int
1694	nready()	1404	nready ()
1695	PROTOTYPE:
1696	CODE:	1405	CODE:
1697	RETVAL = get_nready ();	1406	RETVAL = eio_nready ();
1698	OUTPUT:	1407	OUTPUT:
1699	RETVAL	1408	RETVAL
1700		1409
1701	int	1410	int
1702	npending()	1411	npending ()
1703	PROTOTYPE:
1704	CODE:	1412	CODE:
1705	RETVAL = get_npending ();	1413	RETVAL = eio_npending ();
1706	OUTPUT:	1414	OUTPUT:
1707	RETVAL	1415	RETVAL
1708		1416
1709	int	1417	int
1710	nthreads()	1418	nthreads ()
1711	PROTOTYPE:
1712	CODE:	1419	CODE:
1713	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1420	RETVAL = eio_nthreads ();
1714	RETVAL = started;
1715	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1716	OUTPUT:	1421	OUTPUT:
1717	RETVAL	1422	RETVAL
1718		1423
		1424	int
		1425	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1426	CODE:
		1427	RETVAL = posix_fadvise (fh, offset, length, advice);
		1428	OUTPUT:
		1429	RETVAL
		1430
		1431	ssize_t
		1432	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1433	CODE:
		1434	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1435	OUTPUT:
		1436	RETVAL
		1437
		1438	void
		1439	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1440	PPCODE:
		1441	sv_unmagic (scalar, MMAP_MAGIC);
		1442	{
		1443	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1444	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1445	if (addr == (void *)-1)
		1446	XSRETURN_NO;
		1447
		1448	sv_force_normal (scalar);
		1449
		1450	/* we store the length in mg_obj, as namlen is I32 :/ */
		1451	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1452	->mg_obj = (SV *)length;
		1453
		1454	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1455
		1456	if (!(prot & PROT_WRITE))
		1457	SvREADONLY_on (scalar);
		1458
		1459	if (SvLEN (scalar))
		1460	Safefree (SvPVX (scalar));
		1461
		1462	SvPVX (scalar) = (char *)addr;
		1463	SvCUR_set (scalar, length);
		1464	SvLEN_set (scalar, 0);
		1465	SvPOK_only (scalar);
		1466
		1467	XSRETURN_YES;
		1468	}
		1469
		1470	void
		1471	munmap (SV *scalar)
		1472	CODE:
		1473	sv_unmagic (scalar, MMAP_MAGIC);
		1474
		1475	int
		1476	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1477	ALIAS:
		1478	mprotect = 1
		1479	CODE:
		1480	{
		1481	STRLEN svlen;
		1482	void *addr = SvPVbyte (scalar, svlen);
		1483	size_t len = SvUV (length);
		1484
		1485	if (offset < 0)
		1486	offset += svlen;
		1487
		1488	if (offset < 0 || offset > svlen)
		1489	croak ("offset outside of scalar");
		1490
		1491	if (!SvOK (length) || len + offset > svlen)
		1492	len = svlen - offset;
		1493
		1494	addr = (void *)(((intptr_t)addr) + offset);
		1495	eio_page_align (&addr, &len);
		1496
		1497	switch (ix)
		1498	{
		1499	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1500	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1501	}
		1502	}
		1503	OUTPUT:
		1504	RETVAL
		1505
		1506	int
		1507	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1508	CODE:
		1509	{
		1510	STRLEN svlen;
		1511	void *addr = SvPVbyte (scalar, svlen);
		1512	size_t len = SvUV (length);
		1513
		1514	if (offset < 0)
		1515	offset += svlen;
		1516
		1517	if (offset < 0 || offset > svlen)
		1518	croak ("offset outside of scalar");
		1519
		1520	if (!SvOK (length) || len + offset > svlen)
		1521	len = svlen - offset;
		1522
		1523	addr = (void *)(((intptr_t)addr) + offset);
		1524	eio_page_align (&addr, &len);
		1525	#if _POSIX_MEMLOCK
		1526	RETVAL = munlock (addr, len);
		1527	#else
		1528	RETVAL = ((errno = ENOSYS), -1);
		1529	#endif
		1530	}
		1531	OUTPUT:
		1532	RETVAL
		1533
		1534	int
		1535	munlockall ()
		1536	CODE:
		1537	#if _POSIX_MEMLOCK
		1538	munlockall ();
		1539	#else
		1540	RETVAL = -1;
		1541	errno = ENOSYS;
		1542	#endif
		1543	OUTPUT:
		1544	RETVAL
		1545
		1546	void _on_next_submit (SV *cb)
		1547	CODE:
		1548	SvREFCNT_dec (on_next_submit);
		1549	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1550
1719	PROTOTYPES: DISABLE	1551	PROTOTYPES: DISABLE
1720		1552
1721	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1553	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1722		1554
1723	void	1555	void
1724	cancel (aio_req_ornot req)	1556	cancel (aio_req_ornot req)
1725	CODE:	1557	CODE:
1726	req_cancel (req);	1558	eio_cancel (req);
1727		1559
1728	void	1560	void
1729	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1561	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1730	CODE:	1562	PPCODE:
		1563	{
		1564	if (GIMME_V != G_VOID)
		1565	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1566
		1567	if (items > 1)
		1568	{
		1569	SV *cb_cv =get_cb (callback);
		1570
1731	SvREFCNT_dec (req->callback);	1571	SvREFCNT_dec (req->callback);
1732	req->callback = newSVsv (callback);	1572	req->callback = SvREFCNT_inc (cb_cv);
		1573	}
		1574	}
1733		1575
1734	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1576	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1735		1577
1736	void	1578	void
1737	add (aio_req grp, ...)	1579	add (aio_req grp, ...)
1738	PPCODE:	1580	PPCODE:
1739	{	1581	{
1740	int i;	1582	int i;
1741	aio_req req;
1742		1583
1743	if (grp->int1 == 2)	1584	if (grp->int1 == 2)
1744	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1585	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1745		1586
1746	for (i = 1; i < items; ++i )	1587	for (i = 1; i < items; ++i )
1747	{	1588	{
		1589	aio_req req;
		1590
1748	if (GIMME_V != G_VOID)	1591	if (GIMME_V != G_VOID)
1749	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1592	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1750		1593
1751	req = SvAIO_REQ (ST (i));	1594	req = SvAIO_REQ (ST (i));
1752		1595
1753	if (req)	1596	if (req)
1754	{	1597	eio_grp_add (grp, req);
1755	++grp->size;
1756	req->grp = grp;
1757
1758	req->grp_prev = 0;
1759	req->grp_next = grp->grp_first;
1760
1761	if (grp->grp_first)
1762	grp->grp_first->grp_prev = req;
1763
1764	grp->grp_first = req;
1765	}
1766	}	1598	}
1767	}	1599	}
1768		1600
1769	void	1601	void
1770	cancel_subs (aio_req_ornot req)	1602	cancel_subs (aio_req_ornot req)
…		…
1779	AV *av;	1611	AV *av;
1780		1612
1781	grp->errorno = errno;	1613	grp->errorno = errno;
1782		1614
1783	av = newAV ();	1615	av = newAV ();
		1616	av_extend (av, items - 1);
1784		1617
1785	for (i = 1; i < items; ++i )	1618	for (i = 1; i < items; ++i )
1786	av_push (av, newSVsv (ST (i)));	1619	av_push (av, newSVsv (ST (i)));
1787		1620
1788	SvREFCNT_dec (grp->sv1);	1621	SvREFCNT_dec (grp->sv1);
…		…
1795	grp->errorno = errorno;	1628	grp->errorno = errorno;
1796		1629
1797	void	1630	void
1798	limit (aio_req grp, int limit)	1631	limit (aio_req grp, int limit)
1799	CODE:	1632	CODE:
1800	grp->int2 = limit;	1633	eio_grp_limit (grp, limit);
1801	aio_grp_feed (grp);
1802		1634
1803	void	1635	void
1804	feed (aio_req grp, SV *callback=&PL_sv_undef)	1636	feed (aio_req grp, SV *callback=&PL_sv_undef)
1805	CODE:	1637	CODE:
1806	{	1638	{
1807	SvREFCNT_dec (grp->sv2);	1639	SvREFCNT_dec (grp->sv2);
1808	grp->sv2 = newSVsv (callback);	1640	grp->sv2 = newSVsv (callback);
		1641	grp->feed = aio_grp_feed;
1809		1642
1810	if (grp->int2 <= 0)	1643	if (grp->int2 <= 0)
1811	grp->int2 = 2;	1644	grp->int2 = 2;
1812		1645
1813	aio_grp_feed (grp);	1646	eio_grp_limit (grp, grp->int2);
1814	}	1647	}
1815		1648

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