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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs.
Revision 1.165 by root, Sun May 9 20:42:55 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
		68	# include <sys/time.h>
		69	# include <sys/select.h>
		70	# include <unistd.h>
23	#include <utime.h>	71	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	72	# include <signal.h>
31	# elif __hpux	73	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	74
33	# elif __solaris /* not yet */	75	#endif
34	# include <sys/sendfile.h>	76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#ifndef ST_NODEV
		146	# define ST_NODEV 0
		147	#endif
		148	#ifndef ST_NOEXEC
		149	# define ST_NOEXEC 0
		150	#endif
		151	#ifndef ST_SYNCHRONOUS
		152	# define ST_SYNCHRONOUS 0
		153	#endif
		154	#ifndef ST_MANDLOCK
		155	# define ST_MANDLOCK 0
		156	#endif
		157	#ifndef ST_WRITE
		158	# define ST_WRITE 0
		159	#endif
		160	#ifndef ST_APPEND
		161	# define ST_APPEND 0
		162	#endif
		163	#ifndef ST_IMMUTABLE
		164	# define ST_IMMUTABLE 0
		165	#endif
		166	#ifndef ST_NOATIME
		167	# define ST_NOATIME 0
		168	#endif
		169	#ifndef ST_NODIRATIME
		170	# define ST_NODIRATIME 0
		171	#endif
		172	#ifndef ST_RELATIME
		173	# define ST_RELATIME 0
		174	#endif
		175
		176	#ifndef MCL_CURRENT
		177	# define MCL_CURRENT 0
		178	#endif
		179	#ifndef MCL_FUTURE
		180	# define MCL_FUTURE 0
		181	#endif
		182
		183	#ifndef MAP_ANONYMOUS
		184	# ifdef MAP_ANON
		185	# define MAP_ANONYMOUS MAP_ANON
35	# else	186	# else
36	# error sendfile support requested but not available	187	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	188	# endif
38	#endif	189	#endif
39		190	#ifndef MAP_HUGETLB
40	/* number of seconds after which idle threads exit */	191	# define MAP_HUGETLB 0
41	#define IDLE_TIMEOUT 10
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif	192	#endif
		193	#ifndef MAP_LOCKED
		194	# define MAP_LOCKED 0
		195	#endif
		196	#ifndef MAP_NORESERVE
		197	# define MAP_NORESERVE 0
		198	#endif
		199	#ifndef MAP_POPULATE
		200	# define MAP_POPULATE 0
		201	#endif
		202	#ifndef MAP_NONBLOCK
		203	# define MAP_NONBLOCK 0
		204	#endif
47		205
48	/* buffer size for various temporary buffers */	206	#ifndef PAGESIZE
49	#define AIO_BUFSIZE 65536	207	# define PAGESIZE sysconf (_SC_PAGESIZE)
		208	#endif
50		209
51	#define dBUF \	210	static int req_invoke (eio_req *req);
52	char *aio_buf; \	211	#define EIO_FINISH(req) req_invoke (req)
53	LOCK (wrklock); \	212	static void req_destroy (eio_req *grp);
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	213	#define EIO_DESTROY(req) req_destroy (req)
55	UNLOCK (wrklock); \
56	if (!aio_buf) \
57	return -1;
58
59	typedef SV SV8; /* byte-sv, used for argument-checking */
60		214
61	enum {	215	enum {
62	REQ_QUIT,	216	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	217	};
77		218
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
79	#define AIO_GRP_KLASS "IO::AIO::GRP"
80		220
81	typedef struct aio_cb
82	{
83	struct aio_cb *volatile next;
84
85	SV *callback;
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92
93	STRLEN stroffset;
94	int type;
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98
99	unsigned char flags;
100	unsigned char pri;
101
102	SV *self; /* the perl counterpart of this request, if any */
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
104	} aio_cb;
105
106	enum {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */
108	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};
111
112	typedef aio_cb *aio_req;	221	typedef eio_req *aio_req;
113	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
114		223
115	enum {	224	static SV *on_next_submit;
116	PRI_MIN = -4,	225	static int next_pri = EIO_PRI_DEFAULT;
117	PRI_MAX = 4,	226	static int max_outstanding;
118		227
119	DEFAULT_PRI = 0,	228	static s_epipe respipe;
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123		229
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135
136	static thread_t main_tid;
137	static int main_sig;
138	static int block_sig_level;
139
140	void block_sig ()
141	{
142	sigset_t ss;
143
144	if (block_sig_level++)
145	return;
146
147	if (!main_sig)
148	return;
149
150	sigemptyset (&ss);
151	sigaddset (&ss, main_sig);
152	pthread_sigmask (SIG_BLOCK, &ss, 0);
153	}
154
155	void unblock_sig ()
156	{
157	sigset_t ss;
158
159	if (--block_sig_level)
160	return;
161
162	if (!main_sig)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{
195	closedir (wrk->dirp);
196	wrk->dirp = 0;
197	}
198
199	if (wrk->dbuf)
200	{
201	free (wrk->dbuf);
202	wrk->dbuf = 0;
203	}
204	}
205
206	static void worker_free (worker *wrk)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;
301
302	--q->size;
303
304	for (pri = NUM_PRI; pri--; )
305	{
306	aio_req req = q->qs[pri];
307
308	if (req)
309	{
310	if (!(q->qs[pri] = req->next))
311	q->qe[pri] = 0;
312
313	return req;
314	}
315	}
316
317	abort ();
318	}
319
320	static int poll_cb ();
321	static int req_invoke (aio_req req);
322	static void req_free (aio_req req);	230	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	231	static void req_cancel (aio_req req);
324		232
		233	static void want_poll (void)
		234	{
		235	/* write a dummy byte to the pipe so fh becomes ready */
		236	s_epipe_signal (&respipe);
		237	}
		238
		239	static void done_poll (void)
		240	{
		241	/* read any signals sent by the worker threads */
		242	s_epipe_drain (&respipe);
		243	}
		244
325	/* must be called at most once */	245	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
327	{	247	{
328	if (!req->self)	248	if (!req->self)
329	{	249	{
330	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	252	}
333		253
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	255	}
336		256
337	static aio_req SvAIO_REQ (SV *sv)	257	static aio_req SvAIO_REQ (SV *sv)
338	{	258	{
339	MAGIC *mg;	259	MAGIC *mg;
340		260
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	261	if (!SvROK (sv)
		262	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		263	&& SvSTASH (SvRV (sv)) != aio_req_stash
		264	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	265	croak ("object of class IO::AIO::REQ expected");
343		266
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		268
346	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	270	}
348		271
349	static void aio_grp_feed (aio_req grp)	272	static void aio_grp_feed (aio_req grp)
350	{	273	{
351	block_sig ();	274	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	275	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	276	dSP;
360		277
361	ENTER;	278	ENTER;
362	SAVETMPS;	279	SAVETMPS;
363	PUSHMARK (SP);	280	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	281	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	282	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	284	SPAGAIN;
368	FREETMPS;	285	FREETMPS;
369	LEAVE;	286	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	287	}
380
381	unblock_sig ();
382	}	288	}
383		289
384	static void aio_grp_dec (aio_req grp)	290	static void req_submit (eio_req *req)
385	{	291	{
386	--grp->size;	292	eio_submit (req);
387		293
388	/* call feeder, if applicable */	294	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	295	{
394	block_sig ();	296	dSP;
		297	SV *cb = sv_2mortal (on_next_submit);
395		298
396	if (!req_invoke (grp))	299	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		300
403	req_free (grp);	301	PUSHMARK (SP);
404	unblock_sig ();	302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
405	}	304	}
406	}	305	}
407		306
408	static int req_invoke (aio_req req)	307	static int req_invoke (eio_req *req)
409	{	308	{
410	dSP;	309	dSP;
411		310
412	if (req->flags & FLAG_SV1_RO_OFF)	311	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv1);	312	SvREADONLY_off (req->sv2);
414		313
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	314	if (!EIO_CANCELLED (req) && req->callback)
416	{	315	{
		316	static SV *sv_result_cache; /* caches the result integer SV */
		317	SV *sv_result;
		318
417	ENTER;	319	ENTER;
418	SAVETMPS;	320	SAVETMPS;
419	PUSHMARK (SP);	321	PUSHMARK (SP);
420	EXTEND (SP, 1);	322	EXTEND (SP, 1);
421		323
		324	/* do not recreate the result IV from scratch each time */
		325	if (expect_true (sv_result_cache))
		326	{
		327	sv_result = sv_result_cache; sv_result_cache = 0;
		328	SvIV_set (sv_result, req->result);
		329	}
		330	else
		331	{
		332	sv_result = newSViv (req->result);
		333	SvREADONLY_on (sv_result);
		334	}
		335
422	switch (req->type)	336	switch (req->type)
423	{	337	{
424	case REQ_READDIR:	338	case EIO_READDIR:
425	{	339	{
426	SV *rv = &PL_sv_undef;	340	SV *rv = &PL_sv_undef;
427		341
428	if (req->result >= 0)	342	if (req->result >= 0)
429	{	343	{
430	int i;	344	int i;
431	char *buf = req->ptr2;	345	char *names = (char *)req->ptr2;
		346	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	347	AV *av = newAV ();
433		348
434	av_extend (av, req->result - 1);	349	av_extend (av, req->result - 1);
435		350
436	for (i = 0; i < req->result; ++i)	351	for (i = 0; i < req->result; ++i)
437	{	352	{
438	SV *sv = newSVpv (buf, 0);	353	if (req->int1 & EIO_READDIR_DENTS)
		354	{
		355	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		356
		357	if (req->int1 & EIO_READDIR_CUSTOM2)
		358	{
		359	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		360	AV *avent = newAV ();
		361
		362	av_extend (avent, 2);
		363
		364	if (!sv_type [ent->type])
		365	{
		366	sv_type [ent->type] = newSViv (ent->type);
		367	SvREADONLY_on (sv_type [ent->type]);
		368	}
		369
		370	av_store (avent, 0, namesv);
		371	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		372	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		373
		374	av_store (av, i, newRV_noinc ((SV *)avent));
		375	}
		376	else
440	av_store (av, i, sv);	377	av_store (av, i, namesv);
		378
		379	++ent;
		380	}
		381	else
		382	{
		383	SV *name = newSVpv (names, 0);
		384	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	385	names += SvCUR (name) + 1;
		386	}
442	}	387	}
443		388
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	389	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	390	}
446		391
447	PUSHs (rv);	392	PUSHs (rv);
		393
		394	if (req->int1 & EIO_READDIR_CUSTOM1)
		395	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	396	}
449	break;	397	break;
450		398
451	case REQ_OPEN:	399	case EIO_OPEN:
452	{	400	{
453	/* convert fd to fh */	401	/* convert fd to fh */
454	SV *fh;	402	SV *fh = &PL_sv_undef;
455		403
456	PUSHs (sv_2mortal (newSViv (req->result)));	404	if (req->result >= 0)
457	PUTBACK;	405	{
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	406	GV *gv = (GV *)sv_newmortal ();
459	SPAGAIN;	407	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		408	char sym [64];
		409	int symlen;
		410
		411	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		412	gv_init (gv, aio_stash, sym, symlen, 0);
460		413
461	fh = POPs;	414	symlen = snprintf (
462	PUSHMARK (SP);	415	sym,
		416	sizeof (sym),
		417	"%s&=%d",
		418	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		419	(int)req->result
		420	);
		421
		422	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		423	fh = (SV *)gv;
		424	}
		425
463	XPUSHs (fh);	426	PUSHs (fh);
464	}	427	}
465	break;	428	break;
466		429
		430	case EIO_STATVFS:
		431	case EIO_FSTATVFS:
		432	{
		433	SV *rv = &PL_sv_undef;
		434
		435	if (req->result >= 0)
		436	{
		437	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		438	HV *hv = newHV ();
		439
		440	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		441
		442	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		443	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		444	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		445	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		446	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		447	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		448	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		449	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		450	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		451	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		452	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		453	}
		454
		455	PUSHs (rv);
		456	}
		457
		458	break;
		459
467	case REQ_GROUP:	460	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	461	req->int1 = 2; /* mark group as finished */
469		462
470	if (req->sv1)	463	if (req->sv1)
471	{	464	{
472	int i;	465	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	469	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	470	PUSHs (*av_fetch (av, i, 0));
478	}	471	}
479	break;	472	break;
480		473
481	case REQ_NOP:	474	case EIO_NOP:
482	case REQ_BUSY:	475	case EIO_BUSY:
483	break;	476	break;
484		477
485	case REQ_READLINK:	478	case EIO_READLINK:
486	if (req->result > 0)	479	if (req->result > 0)
487	{	480	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
488	SvCUR_set (req->sv2, req->result);
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);
491	}
492	break;	481	break;
493		482
494	case REQ_STAT:	483	case EIO_STAT:
495	case REQ_LSTAT:	484	case EIO_LSTAT:
496	case REQ_FSTAT:	485	case EIO_FSTAT:
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	486	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
498	PL_laststatval = req->result;	487	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);	488	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));	489	PUSHs (sv_result);
501	break;	490	break;
502		491
503	case REQ_READ:	492	case EIO_READ:
		493	{
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	494	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;	495	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));	496	SvPOK_only (req->sv2);
		497	SvSETMAGIC (req->sv2);
		498	PUSHs (sv_result);
		499	}
507	break;	500	break;
508		501
		502	case EIO_DUP2:
		503	if (req->result > 0)
		504	SvIV_set (sv_result, 0);
		505	/* FALLTHROUGH */
		506
509	default:	507	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	508	PUSHs (sv_result);
511	break;	509	break;
512	}	510	}
513		511
514	errno = req->errorno;	512	errno = req->errorno;
515		513
516	PUTBACK;	514	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	515	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	516	SPAGAIN;
		517
		518	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		519	SvREFCNT_dec (sv_result);
		520	else
		521	sv_result_cache = sv_result;
519		522
520	FREETMPS;	523	FREETMPS;
521	LEAVE;	524	LEAVE;
		525
		526	PUTBACK;
522	}	527	}
523		528
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	529	return !!SvTRUE (ERRSV);
539	}	530	}
540		531
541	static void req_free (aio_req req)	532	static void req_destroy (aio_req req)
542	{	533	{
543	if (req->self)	534	if (req->self)
544	{	535	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	536	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	537	SvREFCNT_dec (req->self);
…		…
548		539
549	SvREFCNT_dec (req->sv1);	540	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	541	SvREFCNT_dec (req->sv2);
551	SvREFCNT_dec (req->callback);	542	SvREFCNT_dec (req->callback);
552		543
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	544	Safefree (req);
557	}	545	}
558		546
559	static void req_cancel_subs (aio_req grp)	547	static void req_cancel_subs (aio_req grp)
560	{	548	{
561	aio_req sub;	549	aio_req sub;
562		550
563	if (grp->type != REQ_GROUP)	551	if (grp->type != EIO_GROUP)
564	return;	552	return;
565		553
566	SvREFCNT_dec (grp->sv2);	554	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	555	grp->sv2 = 0;
568		556
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	557	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	558	}
572		559
573	static void req_cancel (aio_req req)	560	static void
		561	create_respipe (void)
574	{	562	{
575	req->flags |= FLAG_CANCELLED;	563	if (s_epipe_renew (&respipe))
576		564	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	565	}
579		566
580	static void *aio_proc(void *arg);
581
582	static void start_thread (void)
583	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()	567	static void poll_wait (void)
676	{	568	{
677	fd_set rfd;
678
679	while (nreqs)	569	while (eio_nreqs ())
680	{	570	{
681	int size;	571	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	572
		573	X_LOCK (reslock);
683	size = res_queue.size;	574	size = res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	575	X_UNLOCK (reslock);
685		576
686	if (size)	577	if (size)
687	return;	578	return;
688		579
689	maybe_start_thread ();	580	etp_maybe_start_thread ();
690		581
691	FD_ZERO(&rfd);	582	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	583	}
696	}	584	}
697		585
698	static int poll_cb ()	586	static int poll_cb (void)
699	{	587	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	588	for (;;)
713	{	589	{
714	for (;;)	590	int res = eio_poll ();
715	{
716	maybe_start_thread ();
717		591
718	LOCK (reslock);	592	if (res > 0)
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);	593	croak (0);
753	}
754		594
755	count++;	595	if (!max_outstanding || max_outstanding > eio_nreqs ())
756	}	596	return res;
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;
774		597
775	poll_wait ();	598	poll_wait ();
776
777	++maxreqs;
778	}	599	}
779
780	unblock_sig ();
781	return count;
782	}	600	}
783		601
784	static void create_pipe ()	602	static void atfork_child (void)
785	{	603	{
786	if (pipe (respipe))	604	create_respipe ();
787	croak ("unable to initialize result pipe");
788
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}	605	}
795		606
796	/*****************************************************************************/	607	/*****************************************************************************/
797	/* work around various missing functions */
798		608
799	#if !HAVE_PREADWRITE	609	#if !_POSIX_MAPPED_FILES
800	# define pread aio_pread	610	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
801	# define pwrite aio_pwrite	611	# define munmap(addr,length) (errno = ENOSYS, -1)
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}
824
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif	612	#endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974		613
975	if (res < 0	614	#define MMAP_MAGIC PERL_MAGIC_ext
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
977	#if __solaris
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
979	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985		615
986	res = 0;	616	static int
		617	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		618	{
		619	int old_errno = errno;
		620	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		621	errno = old_errno;
987		622
988	while (count)	623	mg->mg_obj = 0; /* just in case */
989	{
990	ssize_t cnt;
991
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
993		624
994	if (cnt <= 0)	625	SvREADONLY_off (sv);
995	{	626	SvCUR_set (sv, 0);
996	if (cnt && !res) res = -1;	627	SvLEN_set (sv, 0);
997	break;	628	SvPVX (sv) = 0;
998	}	629	SvOK_off (sv);
999		630
1000	cnt = write (ofd, aio_buf, cnt);
1001
1002	if (cnt <= 0)
1003	{
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007
1008	offset += cnt;
1009	res += cnt;
1010	count -= cnt;
1011	}
1012	}
1013
1014	return res;	631	return 0;
1015	}	632	}
1016		633
1017	/* read a full directory */	634	static MGVTBL mmap_vtbl = {
1018	static void scandir_ (aio_req req, worker *self)	635	0, 0, 0, 0, mmap_free
1019	{	636	};
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078		637
1079	/*****************************************************************************/	638	/*****************************************************************************/
1080		639
1081	static void *aio_proc (void *thr_arg)	640	static SV *
		641	get_cb (SV *cb_sv)
1082	{	642	{
1083	aio_req req;	643	SvGETMAGIC (cb_sv);
1084	struct timespec ts;	644	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}	645	}
1303		646
1304	#define dREQ \	647	#define dREQ \
		648	SV *cb_cv; \
1305	aio_req req; \	649	aio_req req; \
1306	int req_pri = next_pri; \	650	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \	651	next_pri = EIO_PRI_DEFAULT; \
1308	\	652	\
1309	if (SvOK (callback) && !SvROK (callback)) \	653	cb_cv = get_cb (callback); \
1310	croak ("callback must be undef or of reference type"); \
1311	\	654	\
1312	Newz (0, req, 1, aio_cb); \	655	Newz (0, req, 1, eio_req); \
1313	if (!req) \	656	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \	657	croak ("out of memory during eio_req allocation"); \
1315	\	658	\
1316	req->callback = newSVsv (callback); \	659	req->callback = SvREFCNT_inc (cb_cv); \
1317	req->pri = req_pri	660	req->pri = req_pri
1318		661
1319	#define REQ_SEND \	662	#define REQ_SEND \
		663	PUTBACK; \
1320	req_send (req); \	664	req_submit (req); \
		665	SPAGAIN; \
1321	\	666	\
1322	if (GIMME_V != G_VOID) \	667	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));	668	XPUSHs (req_sv (req, aio_req_stash));
1324		669
1325	MODULE = IO::AIO PACKAGE = IO::AIO	670	MODULE = IO::AIO PACKAGE = IO::AIO
1326		671
1327	PROTOTYPES: ENABLE	672	PROTOTYPES: ENABLE
1328		673
1329	BOOT:	674	BOOT:
1330	{	675	{
		676	static const struct {
		677	const char *name;
		678	IV iv;
		679	} *civ, const_iv[] = {
		680	# define const_niv(name, value) { # name, (IV) value },
		681	# define const_iv(name) { # name, (IV) name },
		682	# define const_eio(name) { # name, (IV) EIO_ ## name },
		683	const_iv (EXDEV)
		684	const_iv (ENOSYS)
		685	const_iv (O_RDONLY)
		686	const_iv (O_WRONLY)
		687	const_iv (O_RDWR)
		688	const_iv (O_CREAT)
		689	const_iv (O_TRUNC)
		690	const_iv (O_EXCL)
		691	const_iv (O_APPEND)
		692	#ifndef _WIN32
		693	const_iv (S_IFIFO)
		694	#endif
		695	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		696	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		697	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		698	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		699	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		700	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		701
		702	const_iv (ST_RDONLY)
		703	const_iv (ST_NOSUID)
		704	const_iv (ST_NODEV)
		705	const_iv (ST_NOEXEC)
		706	const_iv (ST_SYNCHRONOUS)
		707	const_iv (ST_MANDLOCK)
		708	const_iv (ST_WRITE)
		709	const_iv (ST_APPEND)
		710	const_iv (ST_IMMUTABLE)
		711	const_iv (ST_NOATIME)
		712	const_iv (ST_NODIRATIME)
		713	const_iv (ST_RELATIME)
		714
		715	const_iv (PROT_EXEC)
		716	const_iv (PROT_NONE)
		717	const_iv (PROT_READ)
		718	const_iv (PROT_WRITE)
		719
		720	/*const_iv (MAP_FIXED)*/
		721	const_iv (MAP_PRIVATE)
		722	const_iv (MAP_SHARED)
		723	const_iv (MAP_ANONYMOUS)
		724
		725	/* linuxish */
		726	const_iv (MAP_HUGETLB)
		727	const_iv (MAP_LOCKED)
		728	const_iv (MAP_NORESERVE)
		729	const_iv (MAP_POPULATE)
		730	const_iv (MAP_NONBLOCK)
		731
		732	const_iv (MCL_FUTURE)
		733	const_iv (MCL_CURRENT)
		734
		735	const_eio (MS_ASYNC)
		736	const_eio (MS_INVALIDATE)
		737	const_eio (MS_SYNC)
		738
		739	const_eio (MT_MODIFY)
		740
		741	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		742	const_eio (SYNC_FILE_RANGE_WRITE)
		743	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		744
		745	const_eio (READDIR_DENTS)
		746	const_eio (READDIR_DIRS_FIRST)
		747	const_eio (READDIR_STAT_ORDER)
		748	const_eio (READDIR_FOUND_UNKNOWN)
		749
		750	const_eio (DT_UNKNOWN)
		751	const_eio (DT_FIFO)
		752	const_eio (DT_CHR)
		753	const_eio (DT_DIR)
		754	const_eio (DT_BLK)
		755	const_eio (DT_REG)
		756	const_eio (DT_LNK)
		757	const_eio (DT_SOCK)
		758	const_eio (DT_WHT)
		759	};
		760
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	761	aio_stash = gv_stashpv ("IO::AIO" , 1);
		762	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		763	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1332		764
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	765	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	766	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		767
		768	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		769
1341	create_pipe ();	770	create_respipe ();
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);	771
		772	if (eio_init (want_poll, done_poll) < 0)
		773	croak ("IO::AIO: unable to initialise eio library");
		774
		775	/* atfork child called in fifo order, so before eio's handler */
		776	X_THREAD_ATFORK (0, 0, atfork_child);
1343	}	777	}
1344		778
1345	void	779	void
1346	max_poll_reqs (int nreqs)	780	max_poll_reqs (int nreqs)
1347	PROTOTYPE: $	781	PROTOTYPE: $
1348	CODE:	782	CODE:
1349	max_poll_reqs = nreqs;	783	eio_set_max_poll_reqs (nreqs);
1350		784
1351	void	785	void
1352	max_poll_time (double nseconds)	786	max_poll_time (double nseconds)
1353	PROTOTYPE: $	787	PROTOTYPE: $
1354	CODE:	788	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	789	eio_set_max_poll_time (nseconds);
1356		790
1357	void	791	void
1358	min_parallel (int nthreads)	792	min_parallel (int nthreads)
1359	PROTOTYPE: $	793	PROTOTYPE: $
		794	CODE:
		795	eio_set_min_parallel (nthreads);
1360		796
1361	void	797	void
1362	max_parallel (int nthreads)	798	max_parallel (int nthreads)
1363	PROTOTYPE: $	799	PROTOTYPE: $
		800	CODE:
		801	eio_set_max_parallel (nthreads);
1364		802
1365	void	803	void
1366	max_idle (int nthreads)	804	max_idle (int nthreads)
1367	PROTOTYPE: $	805	PROTOTYPE: $
1368	CODE:	806	CODE:
1369	set_max_idle (nthreads);	807	eio_set_max_idle (nthreads);
1370		808
1371	int	809	void
1372	max_outstanding (int maxreqs)	810	max_outstanding (int maxreqs)
1373	PROTOTYPE: $	811	PROTOTYPE: $
1374	CODE:	812	CODE:
1375	RETVAL = max_outstanding;
1376	max_outstanding = maxreqs;	813	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		814
1380	void	815	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	816	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1382	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1383	PPCODE:	818	PPCODE:
1384	{	819	{
1385	dREQ;	820	dREQ;
1386		821
1387	req->type = REQ_OPEN;	822	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	823	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	824	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	825	req->int1 = flags;
1391	req->mode = mode;	826	req->int2 = mode;
1392		827
1393	REQ_SEND;	828	REQ_SEND;
		829	}
		830
		831	void
		832	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		833	PROTOTYPE: $;$
		834	ALIAS:
		835	aio_fsync = EIO_FSYNC
		836	aio_fdatasync = EIO_FDATASYNC
		837	PPCODE:
		838	{
		839	int fd = s_fileno_croak (fh, 0);
		840	dREQ;
		841
		842	req->type = ix;
		843	req->sv1 = newSVsv (fh);
		844	req->int1 = fd;
		845
		846	REQ_SEND (req);
		847	}
		848
		849	void
		850	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		851	PROTOTYPE: $$$$;$
		852	PPCODE:
		853	{
		854	int fd = s_fileno_croak (fh, 0);
		855	dREQ;
		856
		857	req->type = EIO_SYNC_FILE_RANGE;
		858	req->sv1 = newSVsv (fh);
		859	req->int1 = fd;
		860	req->offs = offset;
		861	req->size = nbytes;
		862	req->int2 = flags;
		863
		864	REQ_SEND (req);
1394	}	865	}
1395		866
1396	void	867	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	868	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1398	PROTOTYPE: $;$	869	PROTOTYPE: $;$
		870	PPCODE:
		871	{
		872	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		873	int fd = s_fileno_croak (fh, 0);
		874	dREQ;
		875
		876	if (close_pipe < 0)
		877	{
		878	int pipefd [2];
		879
		880	if (pipe (pipefd) < 0
		881	|| close (pipefd [1]) < 0
		882	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		883	abort (); /*D*/
		884
		885	close_pipe = pipefd [0];
		886	}
		887
		888	req->type = EIO_DUP2;
		889	req->int1 = close_pipe;
		890	req->sv2 = newSVsv (fh);
		891	req->int2 = fd;
		892
		893	REQ_SEND (req);
		894	}
		895
		896	void
		897	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1399	ALIAS:	898	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC
1403	PPCODE:
1404	{
1405	dREQ;
1406
1407	req->type = ix;
1408	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1410
1411	REQ_SEND (req);
1412	}
1413
1414	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1416	ALIAS:
1417	aio_read = REQ_READ	899	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	900	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$	901	PROTOTYPE: $$$$$;$
1420	PPCODE:	902	PPCODE:
1421	{	903	{
1422	STRLEN svlen;	904	STRLEN svlen;
		905	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	906	char *svptr = SvPVbyte (data, svlen);
1424		907	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		908
1428	if (dataoffset < 0)	909	if (dataoffset < 0)
1429	dataoffset += svlen;	910	dataoffset += svlen;
1430		911
1431	if (dataoffset < 0 || dataoffset > svlen)	912	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	913	croak ("dataoffset outside of data scalar");
1433		914
1434	if (ix == REQ_WRITE)	915	if (ix == EIO_WRITE)
1435	{	916	{
1436	/* write: check length and adjust. */	917	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	918	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	919	len = svlen - dataoffset;
1439	}	920	}
1440	else	921	else
1441	{	922	{
1442	/* read: grow scalar as necessary */	923	/* read: check type and grow scalar as necessary */
		924	SvUPGRADE (data, SVt_PV);
1443	svptr = SvGROW (data, length + dataoffset + 1);	925	svptr = SvGROW (data, len + dataoffset + 1);
1444	}	926	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		927
1449	{	928	{
1450	dREQ;	929	dREQ;
1451		930
1452	req->type = ix;	931	req->type = ix;
1453	req->sv1 = newSVsv (fh);	932	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	933	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	934	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	935	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	936	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	937	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	938	req->stroffset = dataoffset;
1461		939
1462	if (!SvREADONLY (data))	940	if (!SvREADONLY (data))
1463	{	941	{
1464	SvREADONLY_on (data);	942	SvREADONLY_on (data);
1465	req->flags |= FLAG_SV1_RO_OFF;	943	req->flags |= FLAG_SV2_RO_OFF;
1466	}	944	}
1467		945
1468	REQ_SEND;	946	REQ_SEND;
1469	}	947	}
1470	}	948	}
…		…
1475	PPCODE:	953	PPCODE:
1476	{	954	{
1477	SV *data;	955	SV *data;
1478	dREQ;	956	dREQ;
1479		957
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	958	req->type = EIO_READLINK;
1484	req->sv1 = newSVsv (path);	959	req->sv1 = newSVsv (path);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);	960	req->ptr1 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		961
1489	REQ_SEND;	962	REQ_SEND;
1490	}	963	}
1491		964
1492	void	965	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	966	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$	967	PROTOTYPE: $$$$;$
1495	PPCODE:	968	PPCODE:
1496	{	969	{
		970	int ifd = s_fileno_croak (in_fh , 0);
		971	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	972	dREQ;
1498		973
1499	req->type = REQ_SENDFILE;	974	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	975	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	976	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	977	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	978	req->int2 = ifd;
1504	req->offs = in_offset;	979	req->offs = in_offset;
1505	req->size = length;	980	req->size = length;
1506		981
1507	REQ_SEND;	982	REQ_SEND;
1508	}	983	}
1509		984
1510	void	985	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	986	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1512	PROTOTYPE: $$$;$	987	PROTOTYPE: $$$;$
1513	PPCODE:	988	PPCODE:
1514	{	989	{
		990	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	991	dREQ;
1516		992
1517	req->type = REQ_READAHEAD;	993	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	994	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	995	req->int1 = fd;
1520	req->offs = offset;	996	req->offs = offset;
1521	req->size = length;	997	req->size = length;
1522		998
1523	REQ_SEND;	999	REQ_SEND;
1524	}	1000	}
1525		1001
1526	void	1002	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1003	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1528	ALIAS:	1004	ALIAS:
1529	aio_stat = REQ_STAT	1005	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1006	aio_lstat = EIO_LSTAT
		1007	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1008	PPCODE:
1532	{	1009	{
1533	dREQ;	1010	dREQ;
1534		1011
1535	req->ptr2 = malloc (sizeof (Stat_t));
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);	1012	req->sv1 = newSVsv (fh_or_path);
1544		1013
1545	if (SvPOK (fh_or_path))	1014	if (SvPOK (req->sv1))
1546	{	1015	{
1547	req->type = ix;	1016	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);	1017	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}	1018	}
1550	else	1019	else
1551	{	1020	{
1552	req->type = REQ_FSTAT;	1021	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1022	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}	1023	}
1555		1024
1556	REQ_SEND;	1025	REQ_SEND;
1557	}	1026	}
…		…
1564		1033
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1034	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1035	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1036	req->sv1 = newSVsv (fh_or_path);
1568		1037
1569	if (SvPOK (fh_or_path))	1038	if (SvPOK (req->sv1))
1570	{	1039	{
1571	req->type = REQ_UTIME;	1040	req->type = EIO_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}	1042	}
1574	else	1043	else
1575	{	1044	{
1576	req->type = REQ_FUTIME;	1045	req->type = EIO_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}	1047	}
1579		1048
1580	REQ_SEND;	1049	REQ_SEND;
1581	}	1050	}
1582		1051
1583	void	1052	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1053	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1585	PPCODE:	1054	PPCODE:
1586	{	1055	{
1587	dREQ;	1056	dREQ;
1588		1057
1589	req->mode = mode;
1590	req->sv1 = newSVsv (fh_or_path);	1058	req->sv1 = newSVsv (fh_or_path);
		1059	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1591		1060
1592	if (SvPOK (fh_or_path))	1061	if (SvPOK (req->sv1))
1593	{	1062	{
1594	req->type = REQ_CHMOD;	1063	req->type = EIO_TRUNCATE;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);	1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}	1065	}
1597	else	1066	else
1598	{	1067	{
1599	req->type = REQ_FCHMOD;	1068	req->type = EIO_FTRUNCATE;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}	1070	}
1602		1071
1603	REQ_SEND;	1072	REQ_SEND;
1604	}	1073	}
1605		1074
1606	void	1075	void
1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1076	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1077	ALIAS:
		1078	aio_chmod = EIO_CHMOD
		1079	aio_mkdir = EIO_MKDIR
1608	PPCODE:	1080	PPCODE:
1609	{	1081	{
1610	dREQ;	1082	dREQ;
1611		1083
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1084	req->int2 = mode;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1085	req->sv1 = newSVsv (fh_or_path);
1615		1086
1616	if (SvPOK (fh_or_path))	1087	if (SvPOK (req->sv1))
1617	{	1088	{
1618	req->type = REQ_CHOWN;	1089	req->type = ix;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);	1090	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}	1091	}
1621	else	1092	else
1622	{	1093	{
1623	req->type = REQ_FCHOWN;	1094	req->type = EIO_FCHMOD;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1095	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}	1096	}
1626		1097
1627	REQ_SEND;	1098	REQ_SEND;
1628	}	1099	}
1629		1100
1630	void	1101	void
		1102	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1103	PPCODE:
		1104	{
		1105	dREQ;
		1106
		1107	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1108	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1109	req->sv1 = newSVsv (fh_or_path);
		1110
		1111	if (SvPOK (req->sv1))
		1112	{
		1113	req->type = EIO_CHOWN;
		1114	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1115	}
		1116	else
		1117	{
		1118	req->type = EIO_FCHOWN;
		1119	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1120	}
		1121
		1122	REQ_SEND;
		1123	}
		1124
		1125	void
		1126	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	dREQ;
		1130
		1131	req->type = EIO_READDIR;
		1132	req->sv1 = newSVsv (pathname);
		1133	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1134	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1135
		1136	if (flags & EIO_READDIR_DENTS)
		1137	req->int1 |= EIO_READDIR_CUSTOM2;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1143	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1632	ALIAS:	1144	ALIAS:
1633	aio_unlink = REQ_UNLINK	1145	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1146	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1147	aio_readdir = EIO_READDIR
1636	PPCODE:	1148	PPCODE:
1637	{	1149	{
1638	dREQ;	1150	dREQ;
1639		1151
1640	req->type = ix;	1152	req->type = ix;
…		…
1643		1155
1644	REQ_SEND;	1156	REQ_SEND;
1645	}	1157	}
1646		1158
1647	void	1159	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1649	PPCODE:
1650	{
1651	dREQ;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1160	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:	1161	ALIAS:
1664	aio_link = REQ_LINK	1162	aio_link = EIO_LINK
1665	aio_symlink = REQ_SYMLINK	1163	aio_symlink = EIO_SYMLINK
1666	aio_rename = REQ_RENAME	1164	aio_rename = EIO_RENAME
1667	PPCODE:	1165	PPCODE:
1668	{	1166	{
1669	dREQ;	1167	dREQ;
1670		1168
1671	req->type = ix;	1169	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);	1170	req->sv1 = newSVsv (oldpath);
		1171	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1172	req->sv2 = newSVsv (newpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);	1173	req->ptr2 = SvPVbyte_nolen (req->sv2);
1674	req->sv1 = newSVsv (newpath);
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1174
1677	REQ_SEND;	1175	REQ_SEND;
1678	}	1176	}
1679		1177
1680	void	1178	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1179	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1682	PPCODE:	1180	PPCODE:
1683	{	1181	{
1684	dREQ;	1182	dREQ;
1685		1183
1686	req->type = REQ_MKNOD;	1184	req->type = EIO_MKNOD;
1687	req->sv1 = newSVsv (pathname);	1185	req->sv1 = newSVsv (pathname);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);	1186	req->ptr1 = SvPVbyte_nolen (req->sv1);
1689	req->mode = (mode_t)mode;	1187	req->int2 = (mode_t)mode;
1690	req->offs = dev;	1188	req->offs = dev;
1691		1189
1692	REQ_SEND;	1190	REQ_SEND;
1693	}	1191	}
1694		1192
1695	void	1193	void
		1194	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1195	ALIAS:
		1196	aio_mtouch = EIO_MTOUCH
		1197	aio_msync = EIO_MSYNC
		1198	PROTOTYPE: $$$$;$
		1199	PPCODE:
		1200	{
		1201	STRLEN svlen;
		1202	UV len = SvUV (length);
		1203	char *svptr = SvPVbyte (data, svlen);
		1204
		1205	if (offset < 0)
		1206	offset += svlen;
		1207
		1208	if (offset < 0 || offset > svlen)
		1209	croak ("offset outside of scalar");
		1210
		1211	if (!SvOK (length) || len + offset > svlen)
		1212	len = svlen - offset;
		1213
		1214	{
		1215	dREQ;
		1216
		1217	req->type = ix;
		1218	req->size = len;
		1219	req->sv2 = SvREFCNT_inc (data);
		1220	req->ptr2 = (char *)svptr + offset;
		1221	req->int1 = flags;
		1222
		1223	REQ_SEND;
		1224	}
		1225	}
		1226
		1227	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1228	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:	1229	PPCODE:
1698	{	1230	{
1699	dREQ;	1231	dREQ;
1700		1232
1701	req->type = REQ_BUSY;	1233	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	1234	req->nv1 = delay < 0. ? 0. : delay;
1703		1235
1704	REQ_SEND;	1236	REQ_SEND;
1705	}	1237	}
1706		1238
…		…
1709	PROTOTYPE: ;$	1241	PROTOTYPE: ;$
1710	PPCODE:	1242	PPCODE:
1711	{	1243	{
1712	dREQ;	1244	dREQ;
1713		1245
1714	req->type = REQ_GROUP;	1246	req->type = EIO_GROUP;
1715		1247
1716	req_send (req);	1248	req_submit (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1249	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	1250	}
1719		1251
1720	void	1252	void
1721	aio_nop (SV *callback=&PL_sv_undef)	1253	aio_nop (SV *callback=&PL_sv_undef)
		1254	ALIAS:
		1255	aio_nop = EIO_NOP
		1256	aio_sync = EIO_SYNC
1722	PPCODE:	1257	PPCODE:
1723	{	1258	{
1724	dREQ;	1259	dREQ;
1725		1260
1726	req->type = REQ_NOP;	1261	req->type = ix;
1727		1262
1728	REQ_SEND;	1263	REQ_SEND;
1729	}	1264	}
1730		1265
1731	int	1266	int
1732	aioreq_pri (int pri = 0)	1267	aioreq_pri (int pri = 0)
1733	PROTOTYPE: ;$	1268	PROTOTYPE: ;$
1734	CODE:	1269	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	1270	RETVAL = next_pri;
1736	if (items > 0)	1271	if (items > 0)
1737	{	1272	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	1273	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	1274	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	1275	next_pri = pri;
1741	}	1276	}
1742	OUTPUT:	1277	OUTPUT:
1743	RETVAL	1278	RETVAL
1744		1279
1745	void	1280	void
1746	aioreq_nice (int nice = 0)	1281	aioreq_nice (int nice = 0)
1747	CODE:	1282	CODE:
1748	nice = next_pri - nice;	1283	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	1284	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	1285	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	1286	next_pri = nice;
1752		1287
1753	void	1288	void
1754	flush ()	1289	flush ()
1755	PROTOTYPE:	1290	PROTOTYPE:
1756	CODE:	1291	CODE:
1757	while (nreqs)	1292	while (eio_nreqs ())
1758	{	1293	{
1759	poll_wait ();	1294	poll_wait ();
1760	poll_cb ();	1295	poll_cb ();
1761	}	1296	}
1762		1297
…		…
1771		1306
1772	int	1307	int
1773	poll_fileno()	1308	poll_fileno()
1774	PROTOTYPE:	1309	PROTOTYPE:
1775	CODE:	1310	CODE:
1776	RETVAL = respipe [0];	1311	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	1312	OUTPUT:
1778	RETVAL	1313	RETVAL
1779		1314
1780	int	1315	int
1781	poll_cb(...)	1316	poll_cb(...)
…		…
1789	poll_wait()	1324	poll_wait()
1790	PROTOTYPE:	1325	PROTOTYPE:
1791	CODE:	1326	CODE:
1792	poll_wait ();	1327	poll_wait ();
1793		1328
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	1329	int
1832	nreqs()	1330	nreqs()
1833	PROTOTYPE:	1331	PROTOTYPE:
1834	CODE:	1332	CODE:
1835	RETVAL = nreqs;	1333	RETVAL = eio_nreqs ();
1836	OUTPUT:	1334	OUTPUT:
1837	RETVAL	1335	RETVAL
1838		1336
1839	int	1337	int
1840	nready()	1338	nready()
1841	PROTOTYPE:	1339	PROTOTYPE:
1842	CODE:	1340	CODE:
1843	RETVAL = get_nready ();	1341	RETVAL = eio_nready ();
1844	OUTPUT:	1342	OUTPUT:
1845	RETVAL	1343	RETVAL
1846		1344
1847	int	1345	int
1848	npending()	1346	npending()
1849	PROTOTYPE:	1347	PROTOTYPE:
1850	CODE:	1348	CODE:
1851	RETVAL = get_npending ();	1349	RETVAL = eio_npending ();
1852	OUTPUT:	1350	OUTPUT:
1853	RETVAL	1351	RETVAL
1854		1352
1855	int	1353	int
1856	nthreads()	1354	nthreads()
1857	PROTOTYPE:	1355	PROTOTYPE:
1858	CODE:	1356	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1357	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1358	OUTPUT:
1863	RETVAL	1359	RETVAL
1864		1360
		1361	int
		1362	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1363	PROTOTYPE: $$$$
		1364	CODE:
		1365	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1366	RETVAL = posix_fadvise (fh, offset, length, advice);
		1367	#else
		1368	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1369	#endif
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	ssize_t
		1374	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1375	PROTOTYPE: $$$$
		1376	CODE:
		1377	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1378	OUTPUT:
		1379	RETVAL
		1380
		1381	void
		1382	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1383	PROTOTYPE: $$$$$;$
		1384	PPCODE:
		1385	sv_unmagic (scalar, MMAP_MAGIC);
		1386	{
		1387	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1388	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1389	if (addr == (void *)-1)
		1390	XSRETURN_NO;
		1391
		1392	/* we store the length in mg_obj, as namlen is I32 :/ */
		1393	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1394	->mg_obj = (SV *)length;
		1395
		1396	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1397	if (!(prot & PROT_WRITE))
		1398	SvREADONLY_on (scalar);
		1399
		1400	SvPVX (scalar) = (char *)addr;
		1401	SvCUR_set (scalar, length);
		1402	SvLEN_set (scalar, 0);
		1403	SvPOK_only (scalar);
		1404
		1405	XSRETURN_YES;
		1406	}
		1407
		1408	void
		1409	munmap (SV *scalar)
		1410	PROTOTYPE: $
		1411	CODE:
		1412	sv_unmagic (scalar, MMAP_MAGIC);
		1413
		1414	int
		1415	mlockall (int flags)
		1416	PROTOTYPE: $
		1417	CODE:
		1418	#if _POSIX_MEMLOCK
		1419	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1420	extern int mallopt (int, int);
		1421	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1422	#endif
		1423	mlockall (flags);
		1424	#else
		1425	RETVAL = -1;
		1426	errno = ENOSYS;
		1427	#endif
		1428	OUTPUT:
		1429	RETVAL
		1430
		1431	int
		1432	munlockall ()
		1433	PROTOTYPE:
		1434	CODE:
		1435	#if _POSIX_MEMLOCK
		1436	munlockall ();
		1437	#else
		1438	RETVAL = -1;
		1439	errno = ENOSYS;
		1440	#endif
		1441	OUTPUT:
		1442	RETVAL
		1443
		1444	void _on_next_submit (SV *cb)
		1445	CODE:
		1446	SvREFCNT_dec (on_next_submit);
		1447	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1448
1865	PROTOTYPES: DISABLE	1449	PROTOTYPES: DISABLE
1866		1450
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		1452
1869	void	1453	void
1870	cancel (aio_req_ornot req)	1454	cancel (aio_req_ornot req)
1871	CODE:	1455	CODE:
1872	req_cancel (req);	1456	eio_cancel (req);
1873		1457
1874	void	1458	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1876	CODE:	1460	PPCODE:
		1461	{
		1462	if (GIMME_V != G_VOID)
		1463	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1464
		1465	if (items > 1)
		1466	{
		1467	SV *cb_cv =get_cb (callback);
		1468
1877	SvREFCNT_dec (req->callback);	1469	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	1470	req->callback = SvREFCNT_inc (cb_cv);
		1471	}
		1472	}
1879		1473
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1474	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		1475
1882	void	1476	void
1883	add (aio_req grp, ...)	1477	add (aio_req grp, ...)
1884	PPCODE:	1478	PPCODE:
1885	{	1479	{
1886	int i;	1480	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		1481
1892	if (grp->int1 == 2)	1482	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		1484
1895	for (i = 1; i < items; ++i )	1485	for (i = 1; i < items; ++i )
1896	{	1486	{
		1487	aio_req req;
		1488
1897	if (GIMME_V != G_VOID)	1489	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1490	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		1491
1900	req = SvAIO_REQ (ST (i));	1492	req = SvAIO_REQ (ST (i));
1901		1493
1902	if (req)	1494	if (req)
1903	{	1495	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	1496	}
1916	}	1497	}
1917		1498
1918	void	1499	void
1919	cancel_subs (aio_req_ornot req)	1500	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	1509	AV *av;
1929		1510
1930	grp->errorno = errno;	1511	grp->errorno = errno;
1931		1512
1932	av = newAV ();	1513	av = newAV ();
		1514	av_extend (av, items - 1);
1933		1515
1934	for (i = 1; i < items; ++i )	1516	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	1517	av_push (av, newSVsv (ST (i)));
1936		1518
1937	SvREFCNT_dec (grp->sv1);	1519	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	1526	grp->errorno = errorno;
1945		1527
1946	void	1528	void
1947	limit (aio_req grp, int limit)	1529	limit (aio_req grp, int limit)
1948	CODE:	1530	CODE:
1949	grp->int2 = limit;	1531	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		1532
1952	void	1533	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
1954	CODE:	1535	CODE:
1955	{	1536	{
1956	SvREFCNT_dec (grp->sv2);	1537	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	1538	grp->sv2 = newSVsv (callback);
		1539	grp->feed = aio_grp_feed;
1958		1540
1959	if (grp->int2 <= 0)	1541	if (grp->int2 <= 0)
1960	grp->int2 = 2;	1542	grp->int2 = 2;
1961		1543
1962	aio_grp_feed (grp);	1544	eio_grp_limit (grp, grp->int2);
1963	}	1545	}
1964		1546

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