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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.81 by root, Fri Oct 27 20:10:06 2006 UTC vs.
Revision 1.181 by root, Tue Feb 15 03:21:41 2011 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		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_MEMLOCK_RANGE || _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/config.h"
		124	#include "libeio/eio.h"
		125
		126	#ifndef POSIX_FADV_NORMAL
		127	# define POSIX_FADV_NORMAL 0
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if !HAVE_POSIX_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	#endif
		152	#ifndef POSIX_MADV_SEQUENTIAL
		153	# define POSIX_MADV_SEQUENTIAL 0
		154	#endif
		155	#ifndef POSIX_MADV_RANDOM
		156	# define POSIX_MADV_RANDOM 0
		157	#endif
		158	#ifndef POSIX_MADV_WILLNEED
		159	# define POSIX_MADV_WILLNEED 0
		160	#endif
		161	#ifndef POSIX_MADV_DONTNEED
		162	# define POSIX_MADV_DONTNEED 0
		163	#endif
		164
		165	#if !HAVE_POSIX_MADVISE
		166	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		167	#endif
		168
		169	#ifndef PROT_NONE
		170	# define PROT_NONE 0
		171	#endif
		172	#ifndef PROT_READ
		173	# define PROT_READ 0
		174	#endif
		175	#ifndef PROT_WRITE
		176	# define PROT_READ 0
		177	#endif
		178	#ifndef PROT_EXEC
		179	# define PROT_EXEC 0
		180	#endif
		181
		182	#ifndef ST_NODEV
		183	# define ST_NODEV 0
		184	#endif
		185	#ifndef ST_NOEXEC
		186	# define ST_NOEXEC 0
		187	#endif
		188	#ifndef ST_SYNCHRONOUS
		189	# define ST_SYNCHRONOUS 0
		190	#endif
		191	#ifndef ST_MANDLOCK
		192	# define ST_MANDLOCK 0
		193	#endif
		194	#ifndef ST_WRITE
		195	# define ST_WRITE 0
		196	#endif
		197	#ifndef ST_APPEND
		198	# define ST_APPEND 0
		199	#endif
		200	#ifndef ST_IMMUTABLE
		201	# define ST_IMMUTABLE 0
		202	#endif
		203	#ifndef ST_NOATIME
		204	# define ST_NOATIME 0
		205	#endif
		206	#ifndef ST_NODIRATIME
		207	# define ST_NODIRATIME 0
		208	#endif
		209	#ifndef ST_RELATIME
		210	# define ST_RELATIME 0
		211	#endif
		212
		213	#ifndef S_IFIFO
		214	# define S_IFIFO 0
		215	#endif
		216	#ifndef S_IFCHR
		217	# define S_IFCHR 0
		218	#endif
		219	#ifndef S_IFBLK
		220	# define S_IFBLK 0
		221	#endif
		222	#ifndef S_IFLNK
		223	# define S_IFLNK 0
		224	#endif
		225	#ifndef S_IFREG
		226	# define S_IFREG 0
		227	#endif
		228	#ifndef S_IFDIR
		229	# define S_IFDIR 0
		230	#endif
		231	#ifndef S_IFWHT
		232	# define S_IFWHT 0
		233	#endif
		234	#ifndef S_IFSOCK
		235	# define S_IFSOCK 0
		236	#endif
		237
		238	#ifndef MAP_ANONYMOUS
		239	# ifdef MAP_ANON
		240	# define MAP_ANONYMOUS MAP_ANON
43	# else	241	# else
44	# error sendfile support requested but not available	242	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	243	# endif
46	#endif	244	#endif
47		245	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	246	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif
52
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	247	#endif
		248	#ifndef MAP_LOCKED
		249	# define MAP_LOCKED 0
76	#endif	250	#endif
		251	#ifndef MAP_NORESERVE
		252	# define MAP_NORESERVE 0
		253	#endif
		254	#ifndef MAP_POPULATE
		255	# define MAP_POPULATE 0
		256	#endif
		257	#ifndef MAP_NONBLOCK
		258	# define MAP_NONBLOCK 0
		259	#endif
77		260
78	/* buffer size for various temporary buffers */	261	#ifndef makedev
79	#define AIO_BUFSIZE 65536	262	# define makedev(maj,min) (((maj) << 8) | (min))
		263	#endif
		264	#ifndef major
		265	# define major(dev) ((dev) >> 8)
		266	#endif
		267	#ifndef minor
		268	# define minor(dev) ((dev) & 0xff)
		269	#endif
80		270
81	#define dBUF \	271	#ifndef PAGESIZE
82	char *aio_buf; \	272	# define PAGESIZE sysconf (_SC_PAGESIZE)
83	LOCK (wrklock); \	273	#endif
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	274
85	UNLOCK (wrklock); \	275	static int req_invoke (eio_req *req);
86	if (!aio_buf) \	276	#define EIO_FINISH(req) req_invoke (req)
87	return -1;	277	static void req_destroy (eio_req *grp);
		278	#define EIO_DESTROY(req) req_destroy (req)
88		279
89	enum {	280	enum {
90	REQ_QUIT,	281	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_MKNOD, REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};	282	};
102		283
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	284	#include "libeio/eio.c"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		285
106	typedef struct aio_cb
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;
111	SV *fh, *fh2;
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;
119	int type;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123
124	unsigned char flags;
125	unsigned char pri;
126
127	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;	286	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	287	typedef eio_req *aio_req_ornot;
137		288
138	enum {	289	static SV *on_next_submit;
139	PRI_MIN = -4,	290	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	291	static int max_outstanding;
141		292
142	DEFAULT_PRI = 0,	293	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		294
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	295	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	296	static void req_cancel (aio_req req);
297		297
		298	static void want_poll (void)
		299	{
		300	/* write a dummy byte to the pipe so fh becomes ready */
		301	s_epipe_signal (&respipe);
		302	}
		303
		304	static void done_poll (void)
		305	{
		306	/* read any signals sent by the worker threads */
		307	s_epipe_drain (&respipe);
		308	}
		309
298	/* must be called at most once */	310	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	311	static SV *req_sv (aio_req req, HV *stash)
300	{	312	{
301	if (!req->self)	313	if (!req->self)
302	{	314	{
303	req->self = (SV *)newHV ();	315	req->self = (SV *)newHV ();
304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	316	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305	}	317	}
306		318
307	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	319	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308	}	320	}
309		321
310	static aio_req SvAIO_REQ (SV *sv)	322	static aio_req SvAIO_REQ (SV *sv)
311	{	323	{
312	MAGIC *mg;	324	MAGIC *mg;
313		325
314	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	326	if (!SvROK (sv)
		327	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		328	&& SvSTASH (SvRV (sv)) != aio_req_stash
		329	&& !sv_derived_from (sv, "IO::AIO::REQ")))
315	croak ("object of class " AIO_REQ_KLASS " expected");	330	croak ("object of class IO::AIO::REQ expected");
316		331
317	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	332	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318		333
319	return mg ? (aio_req)mg->mg_ptr : 0;	334	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	335	}
321		336
322	static void aio_grp_feed (aio_req grp)	337	static void aio_grp_feed (aio_req grp)
323	{	338	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	339	if (grp->sv2 && SvOK (grp->sv2))
325	{	340	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	341	dSP;
331		342
332	ENTER;	343	ENTER;
333	SAVETMPS;	344	SAVETMPS;
334	PUSHMARK (SP);	345	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	346	XPUSHs (req_sv (grp, aio_grp_stash));
336	PUTBACK;	347	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	348	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	349	SPAGAIN;
339	FREETMPS;	350	FREETMPS;
340	LEAVE;	351	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	352	}
351	}	353	}
352		354
353	static void aio_grp_dec (aio_req grp)	355	static void req_submit (eio_req *req)
354	{	356	{
355	--grp->length;	357	eio_submit (req);
356		358
357	/* call feeder, if applicable */	359	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	360	{
363	req_invoke (grp);	361	dSP;
364	req_free (grp);	362	SV *cb = sv_2mortal (on_next_submit);
		363
		364	on_next_submit = 0;
		365
		366	PUSHMARK (SP);
		367	PUTBACK;
		368	call_sv (cb, G_DISCARD | G_EVAL);
365	}	369	}
366	}	370	}
367		371
368	static void req_invoke (aio_req req)	372	static int req_invoke (eio_req *req)
369	{	373	{
370	dSP;	374	if (req->flags & FLAG_SV2_RO_OFF)
		375	SvREADONLY_off (req->sv2);
371		376
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	377	if (!EIO_CANCELLED (req) && req->callback)
373	{	378	{
		379	dSP;
		380	static SV *sv_result_cache; /* caches the result integer SV */
		381	SV *sv_result;
		382
374	ENTER;	383	ENTER;
375	SAVETMPS;	384	SAVETMPS;
376	PUSHMARK (SP);	385	PUSHMARK (SP);
377	EXTEND (SP, 1);	386	EXTEND (SP, 1);
378		387
		388	/* do not recreate the result IV from scratch each time */
		389	if (expect_true (sv_result_cache))
		390	{
		391	sv_result = sv_result_cache; sv_result_cache = 0;
		392	SvIV_set (sv_result, req->result);
		393	SvIOK_only (sv_result);
		394	}
		395	else
		396	{
		397	sv_result = newSViv (req->result);
		398	SvREADONLY_on (sv_result);
		399	}
		400
379	switch (req->type)	401	switch (req->type)
380	{	402	{
381	case REQ_READDIR:	403	case EIO_READDIR:
382	{	404	{
383	SV *rv = &PL_sv_undef;	405	SV *rv = &PL_sv_undef;
384		406
385	if (req->result >= 0)	407	if (req->result >= 0)
386	{	408	{
387	int i;	409	int i;
388	char *buf = req->data2ptr;	410	char *names = (char *)req->ptr2;
		411	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	412	AV *av = newAV ();
390		413
391	av_extend (av, req->result - 1);	414	av_extend (av, req->result - 1);
392		415
393	for (i = 0; i < req->result; ++i)	416	for (i = 0; i < req->result; ++i)
394	{	417	{
395	SV *sv = newSVpv (buf, 0);	418	if (req->int1 & EIO_READDIR_DENTS)
		419	{
		420	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		421
		422	if (req->int1 & EIO_READDIR_CUSTOM2)
		423	{
		424	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		425	AV *avent = newAV ();
		426
		427	av_extend (avent, 2);
		428
		429	if (!sv_type [ent->type])
		430	{
		431	sv_type [ent->type] = newSViv (ent->type);
		432	SvREADONLY_on (sv_type [ent->type]);
		433	}
		434
		435	av_store (avent, 0, namesv);
		436	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		437	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		438
		439	av_store (av, i, newRV_noinc ((SV *)avent));
		440	}
		441	else
397	av_store (av, i, sv);	442	av_store (av, i, namesv);
		443
		444	++ent;
		445	}
		446	else
		447	{
		448	SV *name = newSVpv (names, 0);
		449	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	450	names += SvCUR (name) + 1;
		451	}
399	}	452	}
400		453
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	454	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	455	}
403		456
404	PUSHs (rv);	457	PUSHs (rv);
		458
		459	if (req->int1 & EIO_READDIR_CUSTOM1)
		460	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405	}	461	}
406	break;	462	break;
407		463
408	case REQ_OPEN:	464	case EIO_OPEN:
409	{	465	{
410	/* convert fd to fh */	466	/* convert fd to fh */
411	SV *fh;	467	SV *fh = &PL_sv_undef;
412		468
413	PUSHs (sv_2mortal (newSViv (req->result)));	469	if (req->result >= 0)
414	PUTBACK;	470	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	471	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	472	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		473	char sym [64];
		474	int symlen;
		475
		476	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		477	gv_init (gv, aio_stash, sym, symlen, 0);
417		478
418	fh = SvREFCNT_inc (POPs);	479	symlen = snprintf (
		480	sym,
		481	sizeof (sym),
		482	"%s&=%d",
		483	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		484	(int)req->result
		485	);
419		486
		487	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		488	fh = (SV *)gv;
		489	}
		490
420	PUSHMARK (SP);	491	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	492	}
423	break;	493	break;
424		494
		495	case EIO_STATVFS:
		496	case EIO_FSTATVFS:
		497	{
		498	SV *rv = &PL_sv_undef;
		499
		500	if (req->result >= 0)
		501	{
		502	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		503	HV *hv = newHV ();
		504
		505	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		506
		507	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		508	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		509	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		510	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		511	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		512	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		513	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		514	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		515	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		516	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		517	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		518	}
		519
		520	PUSHs (rv);
		521	}
		522
		523	break;
		524
425	case REQ_GROUP:	525	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	526	req->int1 = 2; /* mark group as finished */
427		527
428	if (req->data)	528	if (req->sv1)
429	{	529	{
430	int i;	530	int i;
431	AV *av = (AV *)req->data;	531	AV *av = (AV *)req->sv1;
432		532
433	EXTEND (SP, AvFILL (av) + 1);	533	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	534	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	535	PUSHs (*av_fetch (av, i, 0));
436	}	536	}
437	break;	537	break;
438		538
439	case REQ_NOP:	539	case EIO_NOP:
440	case REQ_BUSY:	540	case EIO_BUSY:
441	break;	541	break;
442		542
		543	case EIO_READLINK:
		544	if (req->result > 0)
		545	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		546	break;
		547
		548	case EIO_STAT:
		549	case EIO_LSTAT:
		550	case EIO_FSTAT:
		551	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		552	PL_laststatval = req->result;
		553	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		554	PUSHs (sv_result);
		555	break;
		556
		557	case EIO_READ:
		558	{
		559	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		560	*SvEND (req->sv2) = 0;
		561	SvPOK_only (req->sv2);
		562	SvSETMAGIC (req->sv2);
		563	PUSHs (sv_result);
		564	}
		565	break;
		566
		567	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		568	if (req->result > 0)
		569	SvIV_set (sv_result, 0);
		570	/* FALLTHROUGH */
		571
443	default:	572	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	573	PUSHs (sv_result);
445	break;	574	break;
446	}	575	}
447		576
448	errno = req->errorno;	577	errno = req->errorno;
449		578
450	PUTBACK;	579	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	580	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	581	SPAGAIN;
		582
		583	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		584	SvREFCNT_dec (sv_result);
		585	else
		586	sv_result_cache = sv_result;
453		587
454	FREETMPS;	588	FREETMPS;
455	LEAVE;	589	LEAVE;
		590
		591	PUTBACK;
456	}	592	}
457		593
458	if (req->grp)	594	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	595	}
478		596
479	static void req_free (aio_req req)	597	static void req_destroy (aio_req req)
480	{	598	{
481	if (req->self)	599	if (req->self)
482	{	600	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	601	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	602	SvREFCNT_dec (req->self);
485	}	603	}
486		604
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	605	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	606	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	607	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		608
496	Safefree (req);	609	Safefree (req);
497	}	610	}
498		611
499	static void req_cancel_subs (aio_req grp)	612	static void req_cancel_subs (aio_req grp)
500	{	613	{
501	aio_req sub;	614	aio_req sub;
502		615
503	if (grp->type != REQ_GROUP)	616	if (grp->type != EIO_GROUP)
504	return;	617	return;
505		618
506	SvREFCNT_dec (grp->fh2);	619	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	620	grp->sv2 = 0;
508		621
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	622	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	623	}
512		624
513	static void req_cancel (aio_req req)	625	static void
		626	create_respipe (void)
514	{	627	{
515	req->flags |= FLAG_CANCELLED;	628	if (s_epipe_renew (&respipe))
516		629	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	630	}
519		631
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif
538
539	sigfillset (&fullsigset);
540
541	LOCK (wrklock);
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545	{
546	wrk->prev = &wrk_first;
547	wrk->next = wrk_first.next;
548	wrk_first.next->prev = wrk;
549	wrk_first.next = wrk;
550	++started;
551	}
552	else
553	free (wrk);
554
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
556	UNLOCK (wrklock);
557	}
558
559	static void maybe_start_thread ()
560	{
561	#if 0
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif
565
566	if (started >= wanted)
567	return;
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}
592
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	632	static void poll_wait (void)
638	{	633	{
639	fd_set rfd;
640
641	while (nreqs)	634	while (eio_nreqs ())
642	{	635	{
643	int size;	636	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	637
		638	X_LOCK (reslock);
645	size = res_queue.size;	639	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	640	X_UNLOCK (reslock);
647		641
648	if (size)	642	if (size)
649	return;	643	return;
650		644
651	maybe_start_thread ();	645	etp_maybe_start_thread ();
652		646
653	FD_ZERO(&rfd);	647	s_epipe_wait (&respipe);
654	FD_SET(respipe [0], &rfd);
655
656	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	648	}
658	}	649	}
659		650
660	static int poll_cb (int max)	651	static int poll_cb (void)
661	{	652	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	653	for (;;)
668	{	654	{
669	while (max <= 0 || count < max)	655	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		656
673	LOCK (reslock);	657	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	658	croak (0);
		659
		660	if (!max_outstanding || max_outstanding > eio_nreqs ())
		661	return res;
726		662
727	poll_wait ();	663	poll_wait ();
728
729	max = 0;
730	}	664	}
731
732	return count;
733	}	665	}
734		666
735	static void create_pipe ()	667	static void atfork_child (void)
736	{	668	{
737	if (pipe (respipe))	669	create_respipe ();
738	croak ("unable to initialize result pipe");
739
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}	670	}
746		671
747	/*****************************************************************************/	672	/*****************************************************************************/
748	/* work around various missing functions */
749		673
750	#if !HAVE_PREADWRITE	674	#if !_POSIX_MAPPED_FILES
751	# define pread aio_pread	675	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
752	# define pwrite aio_pwrite	676	# define munmap(addr,length) (errno = ENOSYS, -1)
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;
854
855	#if HAVE_SENDFILE
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858
859	# elif __freebsd
860	/*
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868	if (res < 0 && sbytes)
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif	677	#endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897		678
898	if (res < 0	679	#if !_POSIX_MEMORY_PROTECTION
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	680	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
900	#if __solaris	681	# define PROT_NONE 0
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	682	# define PROT_WRITE 0
		683	# define MAP_PRIVATE 0
		684	# define MAP_SHARED 0
		685	# define MAP_FIXED 0
902	#endif	686	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908		687
909	res = 0;	688	#define MMAP_MAGIC PERL_MAGIC_ext
910		689
911	while (count)	690	static int
912	{	691	mmap_free (pTHX_ SV *sv, MAGIC *mg)
913	ssize_t cnt;	692	{
914		693	int old_errno = errno;
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	694	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		695	errno = old_errno;
916		696
917	if (cnt <= 0)	697	mg->mg_obj = 0; /* just in case */
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922		698
923	cnt = write (ofd, aio_buf, cnt);	699	SvREADONLY_off (sv);
924		700
925	if (cnt <= 0)	701	if (SvPVX (sv) != mg->mg_ptr)
926	{	702	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
927	if (cnt && !res) res = -1;
928	break;
929	}
930		703
931	offset += cnt;	704	SvCUR_set (sv, 0);
932	res += cnt;	705	SvPVX (sv) = 0;
933	count -= cnt;	706	SvOK_off (sv);
934	}
935	}
936		707
937	return res;	708	return 0;
938	}	709	}
939		710
940	/* read a full directory */	711	static MGVTBL mmap_vtbl = {
941	static void scandir_ (aio_req req, worker *self)	712	0, 0, 0, 0, mmap_free
942	{	713	};
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000		714
1001	/*****************************************************************************/	715	/*****************************************************************************/
1002		716
1003	static void *aio_proc (void *thr_arg)	717	static SV *
		718	get_cb (SV *cb_sv)
1004	{	719	{
1005	aio_req req;	720	SvGETMAGIC (cb_sv);
1006	worker *self = (worker *)thr_arg;	721	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1049
1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1051	case REQ_FSYNC: req->result = fsync (req->fd); break;
1052	case REQ_READDIR: scandir_ (req, self); break;
1053
1054	case REQ_BUSY:
1055	{
1056	struct timeval tv;
1057
1058	tv.tv_sec = req->fd;
1059	tv.tv_usec = req->fd2;
1060
1061	req->result = select (0, 0, 0, 0, &tv);
1062	}
1063
1064	case REQ_GROUP:
1065	case REQ_NOP:
1066	break;
1067
1068	case REQ_QUIT:
1069	LOCK (wrklock);
1070	worker_free (self);
1071	--started;
1072	UNLOCK (wrklock);
1073	return 0;
1074
1075	default:
1076	req->result = ENOSYS;
1077	break;
1078	}
1079
1080	req->errorno = errno;
1081
1082	LOCK (reslock);
1083
1084	++npending;
1085
1086	if (!reqq_push (&res_queue, req))
1087	/* write a dummy byte to the pipe so fh becomes ready */
1088	write (respipe [1], &respipe, 1);
1089
1090	self->req = 0;
1091	worker_clear (self);
1092
1093	UNLOCK (reslock);
1094	}
1095	}
1096
1097	/*****************************************************************************/
1098
1099	static void atfork_prepare (void)
1100	{
1101	LOCK (wrklock);
1102	LOCK (reqlock);
1103	LOCK (reslock);
1104	#if !HAVE_PREADWRITE
1105	LOCK (preadwritelock);
1106	#endif
1107	#if !HAVE_READDIR_R
1108	LOCK (readdirlock);
1109	#endif
1110	}
1111
1112	static void atfork_parent (void)
1113	{
1114	#if !HAVE_READDIR_R
1115	UNLOCK (readdirlock);
1116	#endif
1117	#if !HAVE_PREADWRITE
1118	UNLOCK (preadwritelock);
1119	#endif
1120	UNLOCK (reslock);
1121	UNLOCK (reqlock);
1122	UNLOCK (wrklock);
1123	}
1124
1125	static void atfork_child (void)
1126	{
1127	aio_req prv;
1128
1129	while (prv = reqq_shift (&req_queue))
1130	req_free (prv);
1131
1132	while (prv = reqq_shift (&res_queue))
1133	req_free (prv);
1134
1135	while (wrk_first.next != &wrk_first)
1136	{
1137	worker *wrk = wrk_first.next;
1138
1139	if (wrk->req)
1140	req_free (wrk->req);
1141
1142	worker_clear (wrk);
1143	worker_free (wrk);
1144	}
1145
1146	started = 0;
1147	nreqs = 0;
1148
1149	close (respipe [0]);
1150	close (respipe [1]);
1151	create_pipe ();
1152
1153	atfork_parent ();
1154	}	722	}
1155		723
1156	#define dREQ \	724	#define dREQ \
		725	SV *cb_cv; \
1157	aio_req req; \	726	aio_req req; \
1158	int req_pri = next_pri; \	727	int req_pri = next_pri; \
1159	next_pri = DEFAULT_PRI + PRI_BIAS; \	728	next_pri = EIO_PRI_DEFAULT; \
1160	\	729	\
1161	if (SvOK (callback) && !SvROK (callback)) \	730	cb_cv = get_cb (callback); \
1162	croak ("callback must be undef or of reference type"); \
1163	\	731	\
1164	Newz (0, req, 1, aio_cb); \	732	Newz (0, req, 1, eio_req); \
1165	if (!req) \	733	if (!req) \
1166	croak ("out of memory during aio_req allocation"); \	734	croak ("out of memory during eio_req allocation"); \
1167	\	735	\
1168	req->callback = newSVsv (callback); \	736	req->callback = SvREFCNT_inc (cb_cv); \
1169	req->pri = req_pri	737	req->pri = req_pri
1170		738
1171	#define REQ_SEND \	739	#define REQ_SEND \
		740	PUTBACK; \
1172	req_send (req); \	741	req_submit (req); \
		742	SPAGAIN; \
1173	\	743	\
1174	if (GIMME_V != G_VOID) \	744	if (GIMME_V != G_VOID) \
1175	XPUSHs (req_sv (req, AIO_REQ_KLASS));	745	XPUSHs (req_sv (req, aio_req_stash));
1176		746
1177	MODULE = IO::AIO PACKAGE = IO::AIO	747	MODULE = IO::AIO PACKAGE = IO::AIO
1178		748
1179	PROTOTYPES: ENABLE	749	PROTOTYPES: ENABLE
1180		750
1181	BOOT:	751	BOOT:
1182	{	752	{
		753	static const struct {
		754	const char *name;
		755	IV iv;
		756	} *civ, const_iv[] = {
		757	# define const_niv(name, value) { # name, (IV) value },
		758	# define const_iv(name) { # name, (IV) name },
		759	# define const_eio(name) { # name, (IV) EIO_ ## name },
		760	const_iv (EXDEV)
		761	const_iv (ENOSYS)
		762	const_iv (O_RDONLY)
		763	const_iv (O_WRONLY)
		764	const_iv (O_RDWR)
		765	const_iv (O_CREAT)
		766	const_iv (O_TRUNC)
		767	const_iv (O_EXCL)
		768	const_iv (O_APPEND)
		769
		770	const_iv (S_IFIFO)
		771	const_iv (S_IFCHR)
		772	const_iv (S_IFBLK)
		773	const_iv (S_IFLNK)
		774	const_iv (S_IFREG)
		775	const_iv (S_IFDIR)
		776	const_iv (S_IFWHT)
		777	const_iv (S_IFSOCK)
		778	const_iv (S_IFMT)
		779
		780	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		781	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		782	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		783	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		784	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		785	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		786
		787	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		788	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		789	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		790	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		791	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		792
		793	const_iv (ST_RDONLY)
		794	const_iv (ST_NOSUID)
		795	const_iv (ST_NODEV)
		796	const_iv (ST_NOEXEC)
		797	const_iv (ST_SYNCHRONOUS)
		798	const_iv (ST_MANDLOCK)
		799	const_iv (ST_WRITE)
		800	const_iv (ST_APPEND)
		801	const_iv (ST_IMMUTABLE)
		802	const_iv (ST_NOATIME)
		803	const_iv (ST_NODIRATIME)
		804	const_iv (ST_RELATIME)
		805
		806	const_iv (PROT_NONE)
		807	const_iv (PROT_EXEC)
		808	const_iv (PROT_READ)
		809	const_iv (PROT_WRITE)
		810
		811	/*const_iv (MAP_FIXED)*/
		812	const_iv (MAP_PRIVATE)
		813	const_iv (MAP_SHARED)
		814	const_iv (MAP_ANONYMOUS)
		815
		816	/* linuxish */
		817	const_iv (MAP_HUGETLB)
		818	const_iv (MAP_LOCKED)
		819	const_iv (MAP_NORESERVE)
		820	const_iv (MAP_POPULATE)
		821	const_iv (MAP_NONBLOCK)
		822
		823	const_eio (MCL_FUTURE)
		824	const_eio (MCL_CURRENT)
		825
		826	const_eio (MS_ASYNC)
		827	const_eio (MS_INVALIDATE)
		828	const_eio (MS_SYNC)
		829
		830	const_eio (MT_MODIFY)
		831
		832	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		833	const_eio (SYNC_FILE_RANGE_WRITE)
		834	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		835
		836	const_eio (READDIR_DENTS)
		837	const_eio (READDIR_DIRS_FIRST)
		838	const_eio (READDIR_STAT_ORDER)
		839	const_eio (READDIR_FOUND_UNKNOWN)
		840
		841	const_eio (DT_UNKNOWN)
		842	const_eio (DT_FIFO)
		843	const_eio (DT_CHR)
		844	const_eio (DT_DIR)
		845	const_eio (DT_BLK)
		846	const_eio (DT_REG)
		847	const_eio (DT_LNK)
		848	const_eio (DT_SOCK)
		849	const_eio (DT_WHT)
		850	};
		851
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	852	aio_stash = gv_stashpv ("IO::AIO" , 1);
1184	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	853	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1185	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	854	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1186	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1187	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1188	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1189		855
		856	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		857	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		858
		859	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		860
1190	create_pipe ();	861	create_respipe ();
1191	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1192		862
1193	start_thread ();	863	if (eio_init (want_poll, done_poll) < 0)
1194	}	864	croak ("IO::AIO: unable to initialise eio library");
1195		865
1196	void	866	/* atfork child called in fifo order, so before eio's handler */
1197	min_parallel (int nthreads)	867	X_THREAD_ATFORK (0, 0, atfork_child);
1198	PROTOTYPE: $	868	}
1199		869
1200	void	870	void
1201	max_parallel (int nthreads)	871	max_poll_reqs (unsigned int nreqs)
1202	PROTOTYPE: $
1203
1204	int
1205	max_outstanding (int maxreqs)
1206	PROTOTYPE: $	872	PROTOTYPE: $
1207	CODE:	873	CODE:
1208	RETVAL = max_outstanding;	874	eio_set_max_poll_reqs (nreqs);
		875
		876	void
		877	max_poll_time (double nseconds)
		878	PROTOTYPE: $
		879	CODE:
		880	eio_set_max_poll_time (nseconds);
		881
		882	void
		883	min_parallel (unsigned int nthreads)
		884	PROTOTYPE: $
		885	CODE:
		886	eio_set_min_parallel (nthreads);
		887
		888	void
		889	max_parallel (unsigned int nthreads)
		890	PROTOTYPE: $
		891	CODE:
		892	eio_set_max_parallel (nthreads);
		893
		894	void
		895	max_idle (unsigned int nthreads)
		896	PROTOTYPE: $
		897	CODE:
		898	eio_set_max_idle (nthreads);
		899
		900	void
		901	idle_timeout (unsigned int seconds)
		902	PROTOTYPE: $
		903	CODE:
		904	eio_set_idle_timeout (seconds);
		905
		906	void
		907	max_outstanding (unsigned int maxreqs)
		908	PROTOTYPE: $
		909	CODE:
1209	max_outstanding = maxreqs;	910	max_outstanding = maxreqs;
1210	OUTPUT:
1211	RETVAL
1212		911
1213	void	912	void
1214	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	913	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1215	SV * pathname
1216	int flags
1217	int mode
1218	SV * callback
1219	PROTOTYPE: $$$;$
1220	PPCODE:	914	PPCODE:
1221	{	915	{
1222	dREQ;	916	dREQ;
1223		917
1224	req->type = REQ_OPEN;	918	req->type = EIO_OPEN;
1225	req->data = newSVsv (pathname);	919	req->sv1 = newSVsv (pathname);
1226	req->dataptr = SvPVbyte_nolen (req->data);	920	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227	req->fd = flags;	921	req->int1 = flags;
1228	req->mode = mode;	922	req->int2 = mode;
1229		923
1230	REQ_SEND;	924	REQ_SEND;
1231	}	925	}
1232		926
1233	void	927	void
1234	aio_close (fh,callback=&PL_sv_undef)	928	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1235	SV * fh
1236	SV * callback
1237	PROTOTYPE: $;$
1238	ALIAS:	929	ALIAS:
1239	aio_close = REQ_CLOSE
1240	aio_fsync = REQ_FSYNC	930	aio_fsync = EIO_FSYNC
1241	aio_fdatasync = REQ_FDATASYNC	931	aio_fdatasync = EIO_FDATASYNC
1242	PPCODE:	932	PPCODE:
1243	{	933	{
		934	int fd = s_fileno_croak (fh, 0);
1244	dREQ;	935	dREQ;
1245		936
1246	req->type = ix;	937	req->type = ix;
1247	req->fh = newSVsv (fh);	938	req->sv1 = newSVsv (fh);
1248	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	939	req->int1 = fd;
1249		940
1250	REQ_SEND (req);	941	REQ_SEND (req);
1251	}	942	}
1252		943
1253	void	944	void
		945	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		946	PPCODE:
		947	{
		948	int fd = s_fileno_croak (fh, 0);
		949	dREQ;
		950
		951	req->type = EIO_SYNC_FILE_RANGE;
		952	req->sv1 = newSVsv (fh);
		953	req->int1 = fd;
		954	req->offs = offset;
		955	req->size = nbytes;
		956	req->int2 = flags;
		957
		958	REQ_SEND (req);
		959	}
		960
		961	void
		962	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		963	PPCODE:
		964	{
		965	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		966	int fd = s_fileno_croak (fh, 0);
		967	dREQ;
		968
		969	if (close_pipe < 0)
		970	{
		971	int pipefd [2];
		972
		973	if (pipe (pipefd) < 0
		974	|| close (pipefd [1]) < 0
		975	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		976	abort (); /*D*/
		977
		978	close_pipe = pipefd [0];
		979	}
		980
		981	req->type = EIO_DUP2;
		982	req->int1 = close_pipe;
		983	req->sv2 = newSVsv (fh);
		984	req->int2 = fd;
		985
		986	REQ_SEND (req);
		987	}
		988
		989	void
1254	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	990	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1255	SV * fh
1256	UV offset
1257	UV length
1258	SV * data
1259	UV dataoffset
1260	SV * callback
1261	ALIAS:	991	ALIAS:
1262	aio_read = REQ_READ	992	aio_read = EIO_READ
1263	aio_write = REQ_WRITE	993	aio_write = EIO_WRITE
1264	PROTOTYPE: $$$$$;$
1265	PPCODE:	994	PPCODE:
1266	{	995	{
1267	aio_req req;
1268	STRLEN svlen;	996	STRLEN svlen;
		997	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1269	char *svptr = SvPVbyte (data, svlen);	998	char *svptr = SvPVbyte (data, svlen);
1270		999	UV len = SvUV (length);
1271	SvUPGRADE (data, SVt_PV);
1272	SvPOK_on (data);
1273		1000
1274	if (dataoffset < 0)	1001	if (dataoffset < 0)
1275	dataoffset += svlen;	1002	dataoffset += svlen;
1276		1003
1277	if (dataoffset < 0 || dataoffset > svlen)	1004	if (dataoffset < 0 || dataoffset > svlen)
1278	croak ("data offset outside of string");	1005	croak ("dataoffset outside of data scalar");
1279		1006
1280	if (ix == REQ_WRITE)	1007	if (ix == EIO_WRITE)
1281	{	1008	{
1282	/* write: check length and adjust. */	1009	/* write: check length and adjust. */
1283	if (length < 0 || length + dataoffset > svlen)	1010	if (!SvOK (length) || len + dataoffset > svlen)
1284	length = svlen - dataoffset;	1011	len = svlen - dataoffset;
1285	}	1012	}
1286	else	1013	else
1287	{	1014	{
1288	/* read: grow scalar as necessary */	1015	/* read: check type and grow scalar as necessary */
		1016	SvUPGRADE (data, SVt_PV);
1289	svptr = SvGROW (data, length + dataoffset);	1017	svptr = SvGROW (data, len + dataoffset + 1);
1290	}	1018	}
1291
1292	if (length < 0)
1293	croak ("length must not be negative");
1294		1019
1295	{	1020	{
1296	dREQ;	1021	dREQ;
1297		1022
1298	req->type = ix;	1023	req->type = ix;
1299	req->fh = newSVsv (fh);	1024	req->sv1 = newSVsv (fh);
1300	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1025	req->int1 = fd;
1301	: IoOFP (sv_2io (fh)));	1026	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1302	req->offset = offset;	1027	req->size = len;
1303	req->length = length;
1304	req->data = SvREFCNT_inc (data);	1028	req->sv2 = SvREFCNT_inc (data);
1305	req->dataptr = (char *)svptr + dataoffset;	1029	req->ptr2 = (char *)svptr + dataoffset;
		1030	req->stroffset = dataoffset;
1306		1031
1307	if (!SvREADONLY (data))	1032	if (!SvREADONLY (data))
1308	{	1033	{
1309	SvREADONLY_on (data);	1034	SvREADONLY_on (data);
1310	req->data2ptr = (void *)data;	1035	req->flags |= FLAG_SV2_RO_OFF;
1311	}	1036	}
1312		1037
1313	REQ_SEND;	1038	REQ_SEND;
1314	}	1039	}
1315	}	1040	}
1316		1041
1317	void	1042	void
1318	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1043	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1319	SV * out_fh
1320	SV * in_fh
1321	UV in_offset
1322	UV length
1323	SV * callback
1324	PROTOTYPE: $$$$;$
1325	PPCODE:	1044	PPCODE:
1326	{	1045	{
		1046	SV *data;
		1047	dREQ;
		1048
		1049	req->type = EIO_READLINK;
		1050	req->sv1 = newSVsv (path);
		1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1052
		1053	REQ_SEND;
		1054	}
		1055
		1056	void
		1057	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1058	PPCODE:
		1059	{
		1060	int ifd = s_fileno_croak (in_fh , 0);
		1061	int ofd = s_fileno_croak (out_fh, 1);
1327	dREQ;	1062	dREQ;
1328		1063
1329	req->type = REQ_SENDFILE;	1064	req->type = EIO_SENDFILE;
1330	req->fh = newSVsv (out_fh);	1065	req->sv1 = newSVsv (out_fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1066	req->int1 = ofd;
1332	req->fh2 = newSVsv (in_fh);	1067	req->sv2 = newSVsv (in_fh);
1333	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1068	req->int2 = ifd;
1334	req->offset = in_offset;	1069	req->offs = in_offset;
1335	req->length = length;	1070	req->size = length;
1336		1071
1337	REQ_SEND;	1072	REQ_SEND;
1338	}	1073	}
1339		1074
1340	void	1075	void
1341	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1076	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1342	SV * fh
1343	UV offset
1344	IV length
1345	SV * callback
1346	PROTOTYPE: $$$;$
1347	PPCODE:	1077	PPCODE:
1348	{	1078	{
		1079	int fd = s_fileno_croak (fh, 0);
1349	dREQ;	1080	dREQ;
1350		1081
1351	req->type = REQ_READAHEAD;	1082	req->type = EIO_READAHEAD;
1352	req->fh = newSVsv (fh);	1083	req->sv1 = newSVsv (fh);
1353	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1084	req->int1 = fd;
1354	req->offset = offset;	1085	req->offs = offset;
1355	req->length = length;	1086	req->size = length;
1356		1087
1357	REQ_SEND;	1088	REQ_SEND;
1358	}	1089	}
1359		1090
1360	void	1091	void
1361	aio_stat (fh_or_path,callback=&PL_sv_undef)	1092	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1362	SV * fh_or_path
1363	SV * callback
1364	ALIAS:	1093	ALIAS:
1365	aio_stat = REQ_STAT	1094	aio_stat = EIO_STAT
1366	aio_lstat = REQ_LSTAT	1095	aio_lstat = EIO_LSTAT
		1096	aio_statvfs = EIO_STATVFS
1367	PPCODE:	1097	PPCODE:
1368	{	1098	{
1369	dREQ;	1099	dREQ;
1370		1100
1371	New (0, req->statdata, 1, Stat_t);	1101	req->sv1 = newSVsv (fh_or_path);
1372	if (!req->statdata)
1373	{
1374	req_free (req);
1375	croak ("out of memory during aio_req->statdata allocation");
1376	}
1377		1102
1378	if (SvPOK (fh_or_path))	1103	if (SvPOK (req->sv1))
1379	{	1104	{
1380	req->type = ix;	1105	req->type = ix;
1381	req->data = newSVsv (fh_or_path);
1382	req->dataptr = SvPVbyte_nolen (req->data);	1106	req->ptr1 = SvPVbyte_nolen (req->sv1);
1383	}	1107	}
1384	else	1108	else
1385	{	1109	{
1386	req->type = REQ_FSTAT;	1110	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1387	req->fh = newSVsv (fh_or_path);
1388	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1111	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1389	}	1112	}
1390		1113
1391	REQ_SEND;	1114	REQ_SEND;
1392	}	1115	}
1393		1116
		1117	UV
		1118	major (UV dev)
		1119	ALIAS:
		1120	minor = 1
		1121	CODE:
		1122	RETVAL = ix ? major (dev) : minor (dev);
		1123	OUTPUT:
		1124	RETVAL
		1125
		1126	UV
		1127	makedev (UV maj, UV min)
		1128	CODE:
		1129	RETVAL = makedev (maj, min);
		1130	OUTPUT:
		1131	RETVAL
		1132
1394	void	1133	void
		1134	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	dREQ;
		1138
		1139	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1140	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1141	req->sv1 = newSVsv (fh_or_path);
		1142
		1143	if (SvPOK (req->sv1))
		1144	{
		1145	req->type = EIO_UTIME;
		1146	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1147	}
		1148	else
		1149	{
		1150	req->type = EIO_FUTIME;
		1151	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1152	}
		1153
		1154	REQ_SEND;
		1155	}
		1156
		1157	void
		1158	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1159	PPCODE:
		1160	{
		1161	dREQ;
		1162
		1163	req->sv1 = newSVsv (fh_or_path);
		1164	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1165
		1166	if (SvPOK (req->sv1))
		1167	{
		1168	req->type = EIO_TRUNCATE;
		1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1170	}
		1171	else
		1172	{
		1173	req->type = EIO_FTRUNCATE;
		1174	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1175	}
		1176
		1177	REQ_SEND;
		1178	}
		1179
		1180	void
		1181	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1182	ALIAS:
		1183	aio_chmod = EIO_CHMOD
		1184	aio_mkdir = EIO_MKDIR
		1185	PPCODE:
		1186	{
		1187	dREQ;
		1188
		1189	req->int2 = mode;
		1190	req->sv1 = newSVsv (fh_or_path);
		1191
		1192	if (SvPOK (req->sv1))
		1193	{
		1194	req->type = ix;
		1195	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1196	}
		1197	else
		1198	{
		1199	req->type = EIO_FCHMOD;
		1200	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1201	}
		1202
		1203	REQ_SEND;
		1204	}
		1205
		1206	void
		1207	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1208	PPCODE:
		1209	{
		1210	dREQ;
		1211
		1212	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1213	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1214	req->sv1 = newSVsv (fh_or_path);
		1215
		1216	if (SvPOK (req->sv1))
		1217	{
		1218	req->type = EIO_CHOWN;
		1219	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1220	}
		1221	else
		1222	{
		1223	req->type = EIO_FCHOWN;
		1224	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1225	}
		1226
		1227	REQ_SEND;
		1228	}
		1229
		1230	void
		1231	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1232	PPCODE:
		1233	{
		1234	dREQ;
		1235
		1236	req->type = EIO_READDIR;
		1237	req->sv1 = newSVsv (pathname);
		1238	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1239	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1240
		1241	if (flags & EIO_READDIR_DENTS)
		1242	req->int1 |= EIO_READDIR_CUSTOM2;
		1243
		1244	REQ_SEND;
		1245	}
		1246
		1247	void
1395	aio_unlink (pathname,callback=&PL_sv_undef)	1248	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1396	SV * pathname
1397	SV * callback
1398	ALIAS:	1249	ALIAS:
1399	aio_unlink = REQ_UNLINK	1250	aio_unlink = EIO_UNLINK
1400	aio_rmdir = REQ_RMDIR	1251	aio_rmdir = EIO_RMDIR
1401	aio_readdir = REQ_READDIR	1252	aio_readdir = EIO_READDIR
1402	PPCODE:	1253	PPCODE:
1403	{	1254	{
1404	dREQ;	1255	dREQ;
1405		1256
1406	req->type = ix;	1257	req->type = ix;
1407	req->data = newSVsv (pathname);	1258	req->sv1 = newSVsv (pathname);
1408	req->dataptr = SvPVbyte_nolen (req->data);	1259	req->ptr1 = SvPVbyte_nolen (req->sv1);
1409		1260
1410	REQ_SEND;	1261	REQ_SEND;
1411	}	1262	}
1412		1263
1413	void	1264	void
1414	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1265	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1415	SV * oldpath
1416	SV * newpath
1417	SV * callback
1418	ALIAS:	1266	ALIAS:
1419	aio_link = REQ_LINK	1267	aio_link = EIO_LINK
1420	aio_symlink = REQ_SYMLINK	1268	aio_symlink = EIO_SYMLINK
1421	aio_rename = REQ_RENAME	1269	aio_rename = EIO_RENAME
1422	PPCODE:	1270	PPCODE:
1423	{	1271	{
1424	dREQ;	1272	dREQ;
1425		1273
1426	req->type = ix;	1274	req->type = ix;
1427	req->fh = newSVsv (oldpath);	1275	req->sv1 = newSVsv (oldpath);
1428	req->data2ptr = SvPVbyte_nolen (req->fh);	1276	req->ptr1 = SvPVbyte_nolen (req->sv1);
1429	req->data = newSVsv (newpath);	1277	req->sv2 = newSVsv (newpath);
1430	req->dataptr = SvPVbyte_nolen (req->data);	1278	req->ptr2 = SvPVbyte_nolen (req->sv2);
1431		1279
1432	REQ_SEND;	1280	REQ_SEND;
1433	}	1281	}
1434		1282
1435	void	1283	void
1436	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1284	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1437	SV * pathname
1438	SV * callback
1439	UV mode
1440	UV dev
1441	PPCODE:	1285	PPCODE:
1442	{	1286	{
1443	dREQ;	1287	dREQ;
1444		1288
1445	req->type = REQ_MKNOD;	1289	req->type = EIO_MKNOD;
1446	req->data = newSVsv (pathname);	1290	req->sv1 = newSVsv (pathname);
1447	req->dataptr = SvPVbyte_nolen (req->data);	1291	req->ptr1 = SvPVbyte_nolen (req->sv1);
1448	req->mode = (mode_t)mode;	1292	req->int2 = (mode_t)mode;
1449	req->offset = dev;	1293	req->offs = dev;
1450		1294
1451	REQ_SEND;	1295	REQ_SEND;
1452	}	1296	}
1453		1297
1454	void	1298	void
		1299	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1300	ALIAS:
		1301	aio_mtouch = EIO_MTOUCH
		1302	aio_msync = EIO_MSYNC
		1303	PPCODE:
		1304	{
		1305	STRLEN svlen;
		1306	char *svptr = SvPVbyte (data, svlen);
		1307	UV len = SvUV (length);
		1308
		1309	if (offset < 0)
		1310	offset += svlen;
		1311
		1312	if (offset < 0 || offset > svlen)
		1313	croak ("offset outside of scalar");
		1314
		1315	if (!SvOK (length) || len + offset > svlen)
		1316	len = svlen - offset;
		1317
		1318	{
		1319	dREQ;
		1320
		1321	req->type = ix;
		1322	req->sv2 = SvREFCNT_inc (data);
		1323	req->ptr2 = (char *)svptr + offset;
		1324	req->size = len;
		1325	req->int1 = flags;
		1326
		1327	REQ_SEND;
		1328	}
		1329	}
		1330
		1331	void
		1332	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1333	PPCODE:
		1334	{
		1335	STRLEN svlen;
		1336	char *svptr = SvPVbyte (data, svlen);
		1337	UV len = SvUV (length);
		1338
		1339	if (offset < 0)
		1340	offset += svlen;
		1341
		1342	if (offset < 0 || offset > svlen)
		1343	croak ("offset outside of scalar");
		1344
		1345	if (!SvOK (length) || len + offset > svlen)
		1346	len = svlen - offset;
		1347
		1348	{
		1349	dREQ;
		1350
		1351	req->type = EIO_MLOCK;
		1352	req->sv2 = SvREFCNT_inc (data);
		1353	req->ptr2 = (char *)svptr + offset;
		1354	req->size = len;
		1355
		1356	REQ_SEND;
		1357	}
		1358	}
		1359
		1360	void
		1361	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1362	PPCODE:
		1363	{
		1364	dREQ;
		1365
		1366	req->type = EIO_MLOCKALL;
		1367	req->int1 = flags;
		1368
		1369	REQ_SEND;
		1370	}
		1371
		1372	void
1455	aio_busy (delay,callback=&PL_sv_undef)	1373	aio_busy (double delay, SV *callback=&PL_sv_undef)
1456	double delay
1457	SV * callback
1458	PPCODE:	1374	PPCODE:
1459	{	1375	{
1460	dREQ;	1376	dREQ;
1461		1377
1462	req->type = REQ_BUSY;	1378	req->type = EIO_BUSY;
1463	req->fd = delay < 0. ? 0 : delay;	1379	req->nv1 = delay < 0. ? 0. : delay;
1464	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1465		1380
1466	REQ_SEND;	1381	REQ_SEND;
1467	}	1382	}
1468		1383
1469	void	1384	void
1470	aio_group (callback=&PL_sv_undef)	1385	aio_group (SV *callback=&PL_sv_undef)
1471	SV * callback
1472	PROTOTYPE: ;$
1473	PPCODE:	1386	PPCODE:
1474	{	1387	{
1475	dREQ;	1388	dREQ;
1476		1389
1477	req->type = REQ_GROUP;	1390	req->type = EIO_GROUP;
		1391
1478	req_send (req);	1392	req_submit (req);
1479
1480	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1393	XPUSHs (req_sv (req, aio_grp_stash));
1481	}	1394	}
1482		1395
1483	void	1396	void
1484	aio_nop (callback=&PL_sv_undef)	1397	aio_nop (SV *callback=&PL_sv_undef)
1485	SV * callback	1398	ALIAS:
		1399	aio_nop = EIO_NOP
		1400	aio_sync = EIO_SYNC
1486	PPCODE:	1401	PPCODE:
1487	{	1402	{
1488	dREQ;	1403	dREQ;
1489		1404
1490	req->type = REQ_NOP;	1405	req->type = ix;
1491		1406
1492	REQ_SEND;	1407	REQ_SEND;
1493	}	1408	}
1494		1409
1495	int	1410	int
1496	aioreq_pri (int pri = 0)	1411	aioreq_pri (int pri = 0)
1497	PROTOTYPE: ;$
1498	CODE:	1412	CODE:
1499	RETVAL = next_pri - PRI_BIAS;	1413	RETVAL = next_pri;
1500	if (items > 0)	1414	if (items > 0)
1501	{	1415	{
1502	if (pri < PRI_MIN) pri = PRI_MIN;	1416	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1503	if (pri > PRI_MAX) pri = PRI_MAX;	1417	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1504	next_pri = pri + PRI_BIAS;	1418	next_pri = pri;
1505	}	1419	}
1506	OUTPUT:	1420	OUTPUT:
1507	RETVAL	1421	RETVAL
1508		1422
1509	void	1423	void
1510	aioreq_nice (int nice = 0)	1424	aioreq_nice (int nice = 0)
1511	CODE:	1425	CODE:
1512	nice = next_pri - nice;	1426	nice = next_pri - nice;
1513	if (nice < PRI_MIN) nice = PRI_MIN;	1427	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1514	if (nice > PRI_MAX) nice = PRI_MAX;	1428	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1515	next_pri = nice + PRI_BIAS;	1429	next_pri = nice;
1516		1430
1517	void	1431	void
1518	flush ()	1432	flush ()
1519	PROTOTYPE:
1520	CODE:	1433	CODE:
1521	while (nreqs)	1434	while (eio_nreqs ())
1522	{	1435	{
1523	poll_wait ();	1436	poll_wait ();
1524	poll_cb (0);	1437	poll_cb ();
1525	}	1438	}
1526		1439
1527	void
1528	poll()
1529	PROTOTYPE:
1530	CODE:
1531	if (nreqs)
1532	{
1533	poll_wait ();
1534	poll_cb (0);
1535	}
1536
1537	int	1440	int
1538	poll_fileno()	1441	poll ()
1539	PROTOTYPE:
1540	CODE:	1442	CODE:
1541	RETVAL = respipe [0];	1443	poll_wait ();
		1444	RETVAL = poll_cb ();
1542	OUTPUT:	1445	OUTPUT:
1543	RETVAL	1446	RETVAL
1544		1447
1545	int	1448	int
1546	poll_cb(...)	1449	poll_fileno ()
1547	PROTOTYPE:
1548	CODE:	1450	CODE:
1549	RETVAL = poll_cb (0);	1451	RETVAL = s_epipe_fd (&respipe);
1550	OUTPUT:	1452	OUTPUT:
1551	RETVAL	1453	RETVAL
1552		1454
1553	int	1455	int
1554	poll_some(int max = 0)	1456	poll_cb (...)
1555	PROTOTYPE: $	1457	PROTOTYPE:
1556	CODE:	1458	CODE:
1557	RETVAL = poll_cb (max);	1459	RETVAL = poll_cb ();
1558	OUTPUT:	1460	OUTPUT:
1559	RETVAL	1461	RETVAL
1560		1462
1561	void	1463	void
1562	poll_wait()	1464	poll_wait ()
1563	PROTOTYPE:
1564	CODE:	1465	CODE:
1565	if (nreqs)
1566	poll_wait ();	1466	poll_wait ();
1567		1467
1568	int	1468	int
1569	nreqs()	1469	nreqs ()
1570	PROTOTYPE:
1571	CODE:	1470	CODE:
1572	RETVAL = nreqs;	1471	RETVAL = eio_nreqs ();
1573	OUTPUT:	1472	OUTPUT:
1574	RETVAL	1473	RETVAL
1575		1474
1576	int	1475	int
1577	nready()	1476	nready ()
1578	PROTOTYPE:
1579	CODE:	1477	CODE:
1580	RETVAL = get_nready ();	1478	RETVAL = eio_nready ();
1581	OUTPUT:	1479	OUTPUT:
1582	RETVAL	1480	RETVAL
1583		1481
1584	int	1482	int
1585	npending()	1483	npending ()
1586	PROTOTYPE:
1587	CODE:	1484	CODE:
1588	RETVAL = get_npending ();	1485	RETVAL = eio_npending ();
1589	OUTPUT:	1486	OUTPUT:
1590	RETVAL	1487	RETVAL
1591		1488
		1489	int
		1490	nthreads ()
		1491	CODE:
		1492	RETVAL = eio_nthreads ();
		1493	OUTPUT:
		1494	RETVAL
		1495
		1496	int
		1497	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1498	CODE:
		1499	RETVAL = posix_fadvise (fh, offset, length, advice);
		1500	OUTPUT:
		1501	RETVAL
		1502
		1503	ssize_t
		1504	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1505	CODE:
		1506	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	void
		1511	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1512	PPCODE:
		1513	sv_unmagic (scalar, MMAP_MAGIC);
		1514	{
		1515	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1516	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1517	if (addr == (void *)-1)
		1518	XSRETURN_NO;
		1519
		1520	sv_force_normal (scalar);
		1521
		1522	/* we store the length in mg_obj, as namlen is I32 :/ */
		1523	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1524	->mg_obj = (SV *)length;
		1525
		1526	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1527
		1528	if (!(prot & PROT_WRITE))
		1529	SvREADONLY_on (scalar);
		1530
		1531	if (SvLEN (scalar))
		1532	Safefree (SvPVX (scalar));
		1533
		1534	SvPVX (scalar) = (char *)addr;
		1535	SvCUR_set (scalar, length);
		1536	SvLEN_set (scalar, 0);
		1537	SvPOK_only (scalar);
		1538
		1539	XSRETURN_YES;
		1540	}
		1541
		1542	void
		1543	munmap (SV *scalar)
		1544	CODE:
		1545	sv_unmagic (scalar, MMAP_MAGIC);
		1546
		1547	int
		1548	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1549	ALIAS:
		1550	mprotect = 1
		1551	CODE:
		1552	{
		1553	STRLEN svlen;
		1554	void *addr = SvPVbyte (scalar, svlen);
		1555	size_t len = SvUV (length);
		1556
		1557	if (offset < 0)
		1558	offset += svlen;
		1559
		1560	if (offset < 0 || offset > svlen)
		1561	croak ("offset outside of scalar");
		1562
		1563	if (!SvOK (length) || len + offset > svlen)
		1564	len = svlen - offset;
		1565
		1566	addr = (void *)(((intptr_t)addr) + offset);
		1567	eio_page_align (&addr, &len);
		1568
		1569	switch (ix)
		1570	{
		1571	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1572	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1573	}
		1574	}
		1575	OUTPUT:
		1576	RETVAL
		1577
		1578	int
		1579	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1580	CODE:
		1581	{
		1582	STRLEN svlen;
		1583	void *addr = SvPVbyte (scalar, svlen);
		1584	size_t len = SvUV (length);
		1585
		1586	if (offset < 0)
		1587	offset += svlen;
		1588
		1589	if (offset < 0 || offset > svlen)
		1590	croak ("offset outside of scalar");
		1591
		1592	if (!SvOK (length) || len + offset > svlen)
		1593	len = svlen - offset;
		1594
		1595	addr = (void *)(((intptr_t)addr) + offset);
		1596	eio_page_align (&addr, &len);
		1597	#if _POSIX_MEMLOCK_RANGE
		1598	RETVAL = munlock (addr, len);
		1599	#else
		1600	RETVAL = ((errno = ENOSYS), -1);
		1601	#endif
		1602	}
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	int
		1607	munlockall ()
		1608	CODE:
		1609	#if _POSIX_MEMLOCK
		1610	munlockall ();
		1611	#else
		1612	RETVAL = -1;
		1613	errno = ENOSYS;
		1614	#endif
		1615	OUTPUT:
		1616	RETVAL
		1617
		1618	void _on_next_submit (SV *cb)
		1619	CODE:
		1620	SvREFCNT_dec (on_next_submit);
		1621	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1622
1592	PROTOTYPES: DISABLE	1623	PROTOTYPES: DISABLE
1593		1624
1594	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1625	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1595		1626
1596	void	1627	void
1597	cancel (aio_req_ornot req)	1628	cancel (aio_req_ornot req)
1598	CODE:	1629	CODE:
1599	req_cancel (req);	1630	eio_cancel (req);
1600		1631
1601	void	1632	void
1602	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1633	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1603	CODE:	1634	PPCODE:
		1635	{
		1636	if (GIMME_V != G_VOID)
		1637	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1638
		1639	if (items > 1)
		1640	{
		1641	SV *cb_cv =get_cb (callback);
		1642
1604	SvREFCNT_dec (req->callback);	1643	SvREFCNT_dec (req->callback);
1605	req->callback = newSVsv (callback);	1644	req->callback = SvREFCNT_inc (cb_cv);
		1645	}
		1646	}
1606		1647
1607	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1648	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1608		1649
1609	void	1650	void
1610	add (aio_req grp, ...)	1651	add (aio_req grp, ...)
1611	PPCODE:	1652	PPCODE:
1612	{	1653	{
1613	int i;	1654	int i;
1614	aio_req req;
1615		1655
1616	if (grp->fd == 2)	1656	if (grp->int1 == 2)
1617	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1657	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1618		1658
1619	for (i = 1; i < items; ++i )	1659	for (i = 1; i < items; ++i )
1620	{	1660	{
		1661	aio_req req;
		1662
1621	if (GIMME_V != G_VOID)	1663	if (GIMME_V != G_VOID)
1622	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1664	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1623		1665
1624	req = SvAIO_REQ (ST (i));	1666	req = SvAIO_REQ (ST (i));
1625		1667
1626	if (req)	1668	if (req)
1627	{	1669	eio_grp_add (grp, req);
1628	++grp->length;
1629	req->grp = grp;
1630
1631	req->grp_prev = 0;
1632	req->grp_next = grp->grp_first;
1633
1634	if (grp->grp_first)
1635	grp->grp_first->grp_prev = req;
1636
1637	grp->grp_first = req;
1638	}
1639	}	1670	}
1640	}	1671	}
1641		1672
1642	void	1673	void
1643	cancel_subs (aio_req_ornot req)	1674	cancel_subs (aio_req_ornot req)
…		…
1652	AV *av;	1683	AV *av;
1653		1684
1654	grp->errorno = errno;	1685	grp->errorno = errno;
1655		1686
1656	av = newAV ();	1687	av = newAV ();
		1688	av_extend (av, items - 1);
1657		1689
1658	for (i = 1; i < items; ++i )	1690	for (i = 1; i < items; ++i )
1659	av_push (av, newSVsv (ST (i)));	1691	av_push (av, newSVsv (ST (i)));
1660		1692
1661	SvREFCNT_dec (grp->data);	1693	SvREFCNT_dec (grp->sv1);
1662	grp->data = (SV *)av;	1694	grp->sv1 = (SV *)av;
1663	}	1695	}
1664		1696
1665	void	1697	void
1666	errno (aio_req grp, int errorno = errno)	1698	errno (aio_req grp, int errorno = errno)
1667	CODE:	1699	CODE:
1668	grp->errorno = errorno;	1700	grp->errorno = errorno;
1669		1701
1670	void	1702	void
1671	limit (aio_req grp, int limit)	1703	limit (aio_req grp, int limit)
1672	CODE:	1704	CODE:
1673	grp->fd2 = limit;	1705	eio_grp_limit (grp, limit);
1674	aio_grp_feed (grp);
1675		1706
1676	void	1707	void
1677	feed (aio_req grp, SV *callback=&PL_sv_undef)	1708	feed (aio_req grp, SV *callback=&PL_sv_undef)
1678	CODE:	1709	CODE:
1679	{	1710	{
1680	SvREFCNT_dec (grp->fh2);	1711	SvREFCNT_dec (grp->sv2);
1681	grp->fh2 = newSVsv (callback);	1712	grp->sv2 = newSVsv (callback);
		1713	grp->feed = aio_grp_feed;
1682		1714
1683	if (grp->fd2 <= 0)	1715	if (grp->int2 <= 0)
1684	grp->fd2 = 2;	1716	grp->int2 = 2;
1685		1717
1686	aio_grp_feed (grp);	1718	eio_grp_limit (grp, grp->int2);
1687	}	1719	}
1688		1720

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