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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC vs.
Revision 1.164 by root, Tue May 4 21:14:01 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
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
18	#ifdef _WIN32	28	#ifdef _WIN32
19		29
20	# define SIGIO 0	30	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	31	# undef malloc
23	#undef free	32	# undef free
24		33
25	// perl overrides all those nice win32 functions	34	// perl overrides all those nice win32 functions
26	# undef open	35	# undef open
27	# undef read	36	# undef read
28	# undef write	37	# undef write
		38	# undef send
		39	# undef recv
29	# undef stat	40	# undef stat
30	# undef fstat	41	# undef fstat
31	# define lstat stat	42	# define lstat stat
32	# undef truncate	43	# undef truncate
33	# undef ftruncate	44	# undef ftruncate
…		…
52	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
53	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
54		65
55	#else	66	#else
56		67
57	# include "autoconf/config.h"
58	# include <sys/time.h>	68	# include <sys/time.h>
59	# include <sys/select.h>	69	# include <sys/select.h>
60	# include <unistd.h>	70	# include <unistd.h>
61	# include <utime.h>	71	# include <utime.h>
62	# include <signal.h>	72	# include <signal.h>
63	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
64		74
65	#endif
66
67	#if HAVE_SENDFILE
68	# if __linux
69	# include <sys/sendfile.h>
70	# elif __freebsd
71	# include <sys/socket.h>
72	# include <sys/uio.h>
73	# elif __hpux
74	# include <sys/socket.h>
75	# elif __solaris /* not yet */
76	# include <sys/sendfile.h>
77	# else
78	# error sendfile support requested but not available
79	# endif	75	#endif
80	#endif
81		76
82	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
83	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
84		82
85	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
86	#ifndef NAME_MAX
87	# define NAME_MAX 4096
88	#endif
89
90	/* buffer size for various temporary buffers */
91	#define AIO_BUFSIZE 65536
92		84
93	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
94	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
95	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
96	#else	90	#else
		91	# define VAL64 NV
97	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
98	#endif	94	#endif
99		95
100	#define dBUF \	96	/*****************************************************************************/
101	char *aio_buf; \	97
102	X_LOCK (wrklock); \	98	#if __GNUC__ >= 3
103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
104	X_UNLOCK (wrklock); \	100	#else
105	if (!aio_buf) \	101	# define expect(expr,value) (expr)
106	return -1;	102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
107		108
108	typedef SV SV8; /* byte-sv, used for argument-checking */	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
		186	# else
		187	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		188	# endif
		189	#endif
		190	#ifndef MAP_HUGETLB
		191	# define MAP_HUGETLB 0
		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
		205
		206	#ifndef PAGESIZE
		207	# define PAGESIZE sysconf (_SC_PAGESIZE)
		208	#endif
		209
		210	static int req_invoke (eio_req *req);
		211	#define EIO_FINISH(req) req_invoke (req)
		212	static void req_destroy (eio_req *grp);
		213	#define EIO_DESTROY(req) req_destroy (req)
109		214
110	enum {	215	enum {
111	REQ_QUIT,	216	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
112	REQ_OPEN, REQ_CLOSE,
113	REQ_READ, REQ_WRITE,
114	REQ_READAHEAD, REQ_SENDFILE,
115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
116	REQ_TRUNCATE, REQ_FTRUNCATE,
117	REQ_UTIME, REQ_FUTIME,
118	REQ_CHMOD, REQ_FCHMOD,
119	REQ_CHOWN, REQ_FCHOWN,
120	REQ_FSYNC, REQ_FDATASYNC,
121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
122	REQ_MKNOD, REQ_READDIR,
123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
124	REQ_GROUP, REQ_NOP,
125	REQ_BUSY,
126	};	217	};
127		218
128	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
129	#define AIO_GRP_KLASS "IO::AIO::GRP"
130		220
131	typedef struct aio_cb
132	{
133	struct aio_cb *volatile next;
134
135	SV *callback;
136	SV *sv1, *sv2;
137	void *ptr1, *ptr2;
138	off_t offs;
139	size_t size;
140	ssize_t result;
141	double nv1, nv2;
142
143	STRLEN stroffset;
144	int type;
145	int int1, int2, int3;
146	int errorno;
147	mode_t mode; /* open */
148
149	unsigned char flags;
150	unsigned char pri;
151
152	SV *self; /* the perl counterpart of this request, if any */
153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
154	} aio_cb;
155
156	enum {
157	FLAG_CANCELLED = 0x01, /* request was cancelled */
158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
160	};
161
162	typedef aio_cb *aio_req;	221	typedef eio_req *aio_req;
163	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
164		223
165	enum {	224	static SV *on_next_submit;
166	PRI_MIN = -4,	225	static int next_pri = EIO_PRI_DEFAULT;
167	PRI_MAX = 4,	226	static int max_outstanding;
168		227
169	DEFAULT_PRI = 0,	228	static s_epipe respipe;
170	PRI_BIAS = -PRI_MIN,
171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
172	};
173		229
174	#define AIO_TICKS ((1000000 + 1023) >> 10)
175
176	static unsigned int max_poll_time = 0;
177	static unsigned int max_poll_reqs = 0;
178
179	/* calculcate time difference in ~1/AIO_TICKS of a second */
180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
181	{
182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
184	}
185
186	static thread_t main_tid;
187	static int main_sig;
188	static int block_sig_level;
189
190	void block_sig ()
191	{
192	sigset_t ss;
193
194	if (block_sig_level++)
195	return;
196
197	if (!main_sig)
198	return;
199
200	sigemptyset (&ss);
201	sigaddset (&ss, main_sig);
202	pthread_sigmask (SIG_BLOCK, &ss, 0);
203	}
204
205	void unblock_sig ()
206	{
207	sigset_t ss;
208
209	if (--block_sig_level)
210	return;
211
212	if (!main_sig)
213	return;
214
215	sigemptyset (&ss);
216	sigaddset (&ss, main_sig);
217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
218	}
219
220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
221
222	static unsigned int started, idle, wanted;
223
224	/* worker threads management */
225	static mutex_t wrklock = X_MUTEX_INIT;
226
227	typedef struct worker {
228	/* locked by wrklock */
229	struct worker *prev, *next;
230
231	thread_t tid;
232
233	/* locked by reslock, reqlock or wrklock */
234	aio_req req; /* currently processed request */
235	void *dbuf;
236	DIR *dirp;
237	} worker;
238
239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
240
241	static void worker_clear (worker *wrk)
242	{
243	if (wrk->dirp)
244	{
245	closedir (wrk->dirp);
246	wrk->dirp = 0;
247	}
248
249	if (wrk->dbuf)
250	{
251	free (wrk->dbuf);
252	wrk->dbuf = 0;
253	}
254	}
255
256	static void worker_free (worker *wrk)
257	{
258	wrk->next->prev = wrk->prev;
259	wrk->prev->next = wrk->next;
260
261	free (wrk);
262	}
263
264	static volatile unsigned int nreqs, nready, npending;
265	static volatile unsigned int max_idle = 4;
266	static volatile unsigned int max_outstanding = 0xffffffff;
267	static int respipe [2];
268
269	static mutex_t reslock = X_MUTEX_INIT;
270	static mutex_t reqlock = X_MUTEX_INIT;
271	static cond_t reqwait = X_COND_INIT;
272
273	#if WORDACCESS_UNSAFE
274
275	static unsigned int get_nready ()
276	{
277	unsigned int retval;
278
279	X_LOCK (reqlock);
280	retval = nready;
281	X_UNLOCK (reqlock);
282
283	return retval;
284	}
285
286	static unsigned int get_npending ()
287	{
288	unsigned int retval;
289
290	X_LOCK (reslock);
291	retval = npending;
292	X_UNLOCK (reslock);
293
294	return retval;
295	}
296
297	static unsigned int get_nthreads ()
298	{
299	unsigned int retval;
300
301	X_LOCK (wrklock);
302	retval = started;
303	X_UNLOCK (wrklock);
304
305	return retval;
306	}
307
308	#else
309
310	# define get_nready() nready
311	# define get_npending() npending
312	# define get_nthreads() started
313
314	#endif
315
316	/*
317	* a somewhat faster data structure might be nice, but
318	* with 8 priorities this actually needs <20 insns
319	* per shift, the most expensive operation.
320	*/
321	typedef struct {
322	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
323	int size;
324	} reqq;
325
326	static reqq req_queue;
327	static reqq res_queue;
328
329	int reqq_push (reqq *q, aio_req req)
330	{
331	int pri = req->pri;
332	req->next = 0;
333
334	if (q->qe[pri])
335	{
336	q->qe[pri]->next = req;
337	q->qe[pri] = req;
338	}
339	else
340	q->qe[pri] = q->qs[pri] = req;
341
342	return q->size++;
343	}
344
345	aio_req reqq_shift (reqq *q)
346	{
347	int pri;
348
349	if (!q->size)
350	return 0;
351
352	--q->size;
353
354	for (pri = NUM_PRI; pri--; )
355	{
356	aio_req req = q->qs[pri];
357
358	if (req)
359	{
360	if (!(q->qs[pri] = req->next))
361	q->qe[pri] = 0;
362
363	return req;
364	}
365	}
366
367	abort ();
368	}
369
370	static int poll_cb ();
371	static int req_invoke (aio_req req);
372	static void req_destroy (aio_req req);	230	static void req_destroy (aio_req req);
373	static void req_cancel (aio_req req);	231	static void req_cancel (aio_req req);
374		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
375	/* must be called at most once */	245	/* must be called at most once */
376	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
377	{	247	{
378	if (!req->self)	248	if (!req->self)
379	{	249	{
380	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
381	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
382	}	252	}
383		253
384	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
385	}	255	}
386		256
387	static aio_req SvAIO_REQ (SV *sv)	257	static aio_req SvAIO_REQ (SV *sv)
388	{	258	{
389	MAGIC *mg;	259	MAGIC *mg;
390		260
391	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")))
392	croak ("object of class " AIO_REQ_KLASS " expected");	265	croak ("object of class IO::AIO::REQ expected");
393		266
394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
395		268
396	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
397	}	270	}
398		271
399	static void aio_grp_feed (aio_req grp)	272	static void aio_grp_feed (aio_req grp)
400	{	273	{
401	block_sig ();	274	if (grp->sv2 && SvOK (grp->sv2))
402
403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
404	{	275	{
405	int old_len = grp->size;
406
407	if (grp->sv2 && SvOK (grp->sv2))
408	{
409	dSP;	276	dSP;
410		277
411	ENTER;	278	ENTER;
412	SAVETMPS;	279	SAVETMPS;
413	PUSHMARK (SP);	280	PUSHMARK (SP);
414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	281	XPUSHs (req_sv (grp, aio_grp_stash));
415	PUTBACK;	282	PUTBACK;
416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
417	SPAGAIN;	284	SPAGAIN;
418	FREETMPS;	285	FREETMPS;
419	LEAVE;	286	LEAVE;
420	}
421
422	/* stop if no progress has been made */
423	if (old_len == grp->size)
424	{
425	SvREFCNT_dec (grp->sv2);
426	grp->sv2 = 0;
427	break;
428	}
429	}	287	}
430
431	unblock_sig ();
432	}	288	}
433		289
434	static void aio_grp_dec (aio_req grp)	290	static void req_submit (eio_req *req)
435	{	291	{
436	--grp->size;	292	eio_submit (req);
437		293
438	/* call feeder, if applicable */	294	if (expect_false (on_next_submit))
439	aio_grp_feed (grp);
440
441	/* finish, if done */
442	if (!grp->size && grp->int1)
443	{	295	{
444	block_sig ();	296	dSP;
		297	SV *cb = sv_2mortal (on_next_submit);
445		298
446	if (!req_invoke (grp))	299	on_next_submit = 0;
447	{
448	req_destroy (grp);
449	unblock_sig ();
450	croak (0);
451	}
452		300
453	req_destroy (grp);	301	PUSHMARK (SP);
454	unblock_sig ();	302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
455	}	304	}
456	}	305	}
457		306
458	static int req_invoke (aio_req req)	307	static int req_invoke (eio_req *req)
459	{	308	{
460	dSP;	309	dSP;
461		310
462	if (req->flags & FLAG_SV2_RO_OFF)	311	if (req->flags & FLAG_SV2_RO_OFF)
463	SvREADONLY_off (req->sv2);	312	SvREADONLY_off (req->sv2);
464		313
465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	314	if (!EIO_CANCELLED (req) && req->callback)
466	{	315	{
467	ENTER;	316	ENTER;
468	SAVETMPS;	317	SAVETMPS;
469	PUSHMARK (SP);	318	PUSHMARK (SP);
470	EXTEND (SP, 1);	319	EXTEND (SP, 1);
471		320
472	switch (req->type)	321	switch (req->type)
473	{	322	{
474	case REQ_READDIR:	323	case EIO_READDIR:
475	{	324	{
476	SV *rv = &PL_sv_undef;	325	SV *rv = &PL_sv_undef;
477		326
478	if (req->result >= 0)	327	if (req->result >= 0)
479	{	328	{
480	int i;	329	int i;
481	char *buf = req->ptr2;	330	char *names = (char *)req->ptr2;
		331	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
482	AV *av = newAV ();	332	AV *av = newAV ();
483		333
484	av_extend (av, req->result - 1);	334	av_extend (av, req->result - 1);
485		335
486	for (i = 0; i < req->result; ++i)	336	for (i = 0; i < req->result; ++i)
487	{	337	{
488	SV *sv = newSVpv (buf, 0);	338	if (req->int1 & EIO_READDIR_DENTS)
		339	{
		340	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
489		341
		342	if (req->int1 & EIO_READDIR_CUSTOM2)
		343	{
		344	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		345	AV *avent = newAV ();
		346
		347	av_extend (avent, 2);
		348
		349	if (!sv_type [ent->type])
		350	{
		351	sv_type [ent->type] = newSViv (ent->type);
		352	SvREADONLY_on (sv_type [ent->type]);
		353	}
		354
		355	av_store (avent, 0, namesv);
		356	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		357	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		358
		359	av_store (av, i, newRV_noinc ((SV *)avent));
		360	}
		361	else
490	av_store (av, i, sv);	362	av_store (av, i, namesv);
		363
		364	++ent;
		365	}
		366	else
		367	{
		368	SV *name = newSVpv (names, 0);
		369	av_store (av, i, name);
491	buf += SvCUR (sv) + 1;	370	names += SvCUR (name) + 1;
		371	}
492	}	372	}
493		373
494	rv = sv_2mortal (newRV_noinc ((SV *)av));	374	rv = sv_2mortal (newRV_noinc ((SV *)av));
495	}	375	}
496		376
497	PUSHs (rv);	377	PUSHs (rv);
		378
		379	if (req->int1 & EIO_READDIR_CUSTOM1)
		380	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
498	}	381	}
499	break;	382	break;
500		383
501	case REQ_OPEN:	384	case EIO_OPEN:
502	{	385	{
503	/* convert fd to fh */	386	/* convert fd to fh */
504	SV *fh;	387	SV *fh = &PL_sv_undef;
505		388
506	PUSHs (sv_2mortal (newSViv (req->result)));	389	if (req->result >= 0)
507	PUTBACK;	390	{
508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	391	GV *gv = (GV *)sv_newmortal ();
509	SPAGAIN;	392	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		393	char sym [64];
		394	int symlen;
		395
		396	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		397	gv_init (gv, aio_stash, sym, symlen, 0);
510		398
511	fh = POPs;	399	symlen = snprintf (
512	PUSHMARK (SP);	400	sym,
		401	sizeof (sym),
		402	"%s&=%d",
		403	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		404	(int)req->result
		405	);
		406
		407	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		408	fh = (SV *)gv;
		409	}
		410
513	XPUSHs (fh);	411	PUSHs (fh);
514	}	412	}
515	break;	413	break;
516		414
		415	case EIO_STATVFS:
		416	case EIO_FSTATVFS:
		417	{
		418	SV *rv = &PL_sv_undef;
		419
		420	if (req->result >= 0)
		421	{
		422	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		423	HV *hv = newHV ();
		424
		425	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		426
		427	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		428	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		429	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		430	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		431	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		432	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		433	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		434	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		435	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		436	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		437	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		438	}
		439
		440	PUSHs (rv);
		441	}
		442
		443	break;
		444
517	case REQ_GROUP:	445	case EIO_GROUP:
518	req->int1 = 2; /* mark group as finished */	446	req->int1 = 2; /* mark group as finished */
519		447
520	if (req->sv1)	448	if (req->sv1)
521	{	449	{
522	int i;	450	int i;
…		…
526	for (i = 0; i <= AvFILL (av); ++i)	454	for (i = 0; i <= AvFILL (av); ++i)
527	PUSHs (*av_fetch (av, i, 0));	455	PUSHs (*av_fetch (av, i, 0));
528	}	456	}
529	break;	457	break;
530		458
531	case REQ_NOP:	459	case EIO_NOP:
532	case REQ_BUSY:	460	case EIO_BUSY:
533	break;	461	break;
534		462
535	case REQ_READLINK:	463	case EIO_READLINK:
536	if (req->result > 0)	464	if (req->result > 0)
537	{	465	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
538	SvCUR_set (req->sv2, req->result);
539	*SvEND (req->sv2) = 0;
540	PUSHs (req->sv2);
541	}
542	break;	466	break;
543		467
544	case REQ_STAT:	468	case EIO_STAT:
545	case REQ_LSTAT:	469	case EIO_LSTAT:
546	case REQ_FSTAT:	470	case EIO_FSTAT:
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	471	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;	472	PL_laststatval = req->result;
549	PL_statcache = *(Stat_t *)(req->ptr2);	473	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
550	PUSHs (sv_2mortal (newSViv (req->result)));	474	PUSHs (sv_2mortal (newSViv (req->result)));
551	break;	475	break;
552		476
553	case REQ_READ:	477	case EIO_READ:
		478	{
554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	479	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
555	*SvEND (req->sv2) = 0;	480	*SvEND (req->sv2) = 0;
		481	SvPOK_only (req->sv2);
		482	SvSETMAGIC (req->sv2);
556	PUSHs (sv_2mortal (newSViv (req->result)));	483	PUSHs (sv_2mortal (newSViv (req->result)));
		484	}
557	break;	485	break;
		486
		487	case EIO_DUP2:
		488	if (req->result > 0)
		489	req->result = 0;
		490	/* FALLTHROUGH */
558		491
559	default:	492	default:
560	PUSHs (sv_2mortal (newSViv (req->result)));	493	PUSHs (sv_2mortal (newSViv (req->result)));
561	break;	494	break;
562	}	495	}
563		496
564	errno = req->errorno;	497	errno = req->errorno;
565		498
566	PUTBACK;	499	PUTBACK;
567	call_sv (req->callback, G_VOID | G_EVAL);	500	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
568	SPAGAIN;	501	SPAGAIN;
569		502
570	FREETMPS;	503	FREETMPS;
571	LEAVE;	504	LEAVE;
		505
		506	PUTBACK;
572	}	507	}
573		508
574	if (req->grp)
575	{
576	aio_req grp = req->grp;
577
578	/* unlink request */
579	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
580	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
581
582	if (grp->grp_first == req)
583	grp->grp_first = req->grp_next;
584
585	aio_grp_dec (grp);
586	}
587
588	return !SvTRUE (ERRSV);	509	return !!SvTRUE (ERRSV);
589	}	510	}
590		511
591	static void req_destroy (aio_req req)	512	static void req_destroy (aio_req req)
592	{	513	{
593	if (req->self)	514	if (req->self)
…		…
598		519
599	SvREFCNT_dec (req->sv1);	520	SvREFCNT_dec (req->sv1);
600	SvREFCNT_dec (req->sv2);	521	SvREFCNT_dec (req->sv2);
601	SvREFCNT_dec (req->callback);	522	SvREFCNT_dec (req->callback);
602		523
603	if (req->flags & FLAG_PTR2_FREE)
604	free (req->ptr2);
605
606	Safefree (req);	524	Safefree (req);
607	}	525	}
608		526
609	static void req_cancel_subs (aio_req grp)	527	static void req_cancel_subs (aio_req grp)
610	{	528	{
611	aio_req sub;	529	aio_req sub;
612		530
613	if (grp->type != REQ_GROUP)	531	if (grp->type != EIO_GROUP)
614	return;	532	return;
615		533
616	SvREFCNT_dec (grp->sv2);	534	SvREFCNT_dec (grp->sv2);
617	grp->sv2 = 0;	535	grp->sv2 = 0;
618		536
619	for (sub = grp->grp_first; sub; sub = sub->grp_next)	537	eio_grp_cancel (grp);
620	req_cancel (sub);
621	}	538	}
622		539
623	static void req_cancel (aio_req req)	540	static void
		541	create_respipe (void)
624	{	542	{
625	req->flags |= FLAG_CANCELLED;	543	if (s_epipe_renew (&respipe))
626		544	croak ("IO::AIO: unable to initialize result pipe");
627	req_cancel_subs (req);
628	}	545	}
629		546
630	X_THREAD_PROC (aio_proc);
631
632	static void start_thread (void)
633	{
634	worker *wrk = calloc (1, sizeof (worker));
635
636	if (!wrk)
637	croak ("unable to allocate worker thread data");
638
639	X_LOCK (wrklock);
640
641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
642	{
643	wrk->prev = &wrk_first;
644	wrk->next = wrk_first.next;
645	wrk_first.next->prev = wrk;
646	wrk_first.next = wrk;
647	++started;
648	}
649	else
650	free (wrk);
651
652	X_UNLOCK (wrklock);
653	}
654
655	static void maybe_start_thread ()
656	{
657	if (get_nthreads () >= wanted)
658	return;
659
660	/* todo: maybe use idle here, but might be less exact */
661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
662	return;
663
664	start_thread ();
665	}
666
667	static void req_send (aio_req req)
668	{
669	block_sig ();
670
671	++nreqs;
672
673	X_LOCK (reqlock);
674	++nready;
675	reqq_push (&req_queue, req);
676	X_COND_SIGNAL (reqwait);
677	X_UNLOCK (reqlock);
678
679	unblock_sig ();
680
681	maybe_start_thread ();
682	}
683
684	static void end_thread (void)
685	{
686	aio_req req;
687
688	Newz (0, req, 1, aio_cb);
689
690	req->type = REQ_QUIT;
691	req->pri = PRI_MAX + PRI_BIAS;
692
693	X_LOCK (reqlock);
694	reqq_push (&req_queue, req);
695	X_COND_SIGNAL (reqwait);
696	X_UNLOCK (reqlock);
697
698	X_LOCK (wrklock);
699	--started;
700	X_UNLOCK (wrklock);
701	}
702
703	static void set_max_idle (int nthreads)
704	{
705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
706	max_idle = nthreads <= 0 ? 1 : nthreads;
707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
708	}
709
710	static void min_parallel (int nthreads)
711	{
712	if (wanted < nthreads)
713	wanted = nthreads;
714	}
715
716	static void max_parallel (int nthreads)
717	{
718	if (wanted > nthreads)
719	wanted = nthreads;
720
721	while (started > wanted)
722	end_thread ();
723	}
724
725	static void poll_wait ()	547	static void poll_wait (void)
726	{	548	{
727	fd_set rfd;
728
729	while (nreqs)	549	while (eio_nreqs ())
730	{	550	{
731	int size;	551	int size;
732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	552
		553	X_LOCK (reslock);
733	size = res_queue.size;	554	size = res_queue.size;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	555	X_UNLOCK (reslock);
735		556
736	if (size)	557	if (size)
737	return;	558	return;
738		559
739	maybe_start_thread ();	560	etp_maybe_start_thread ();
740		561
741	FD_ZERO(&rfd);	562	s_epipe_wait (&respipe);
742	FD_SET(respipe [0], &rfd);
743
744	select (respipe [0] + 1, &rfd, 0, 0, 0);
745	}	563	}
746	}	564	}
747		565
748	static int poll_cb ()	566	static int poll_cb (void)
749	{	567	{
750	dSP;
751	int count = 0;
752	int maxreqs = max_poll_reqs;
753	int do_croak = 0;
754	struct timeval tv_start, tv_now;
755	aio_req req;
756
757	if (max_poll_time)
758	gettimeofday (&tv_start, 0);
759
760	block_sig ();
761
762	for (;;)	568	for (;;)
763	{	569	{
764	for (;;)	570	int res = eio_poll ();
765	{
766	maybe_start_thread ();
767		571
768	X_LOCK (reslock);	572	if (res > 0)
769	req = reqq_shift (&res_queue);
770
771	if (req)
772	{
773	--npending;
774
775	if (!res_queue.size)
776	{
777	/* read any signals sent by the worker threads */
778	char buf [4];
779	while (read (respipe [0], buf, 4) == 4)
780	;
781	}
782	}
783
784	X_UNLOCK (reslock);
785
786	if (!req)
787	break;
788
789	--nreqs;
790
791	if (req->type == REQ_GROUP && req->size)
792	{
793	req->int1 = 1; /* mark request as delayed */
794	continue;
795	}
796	else
797	{
798	if (!req_invoke (req))
799	{
800	req_destroy (req);
801	unblock_sig ();
802	croak (0);	573	croak (0);
803	}
804		574
805	count++;	575	if (!max_outstanding || max_outstanding > eio_nreqs ())
806	}	576	return res;
807
808	req_destroy (req);
809
810	if (maxreqs && !--maxreqs)
811	break;
812
813	if (max_poll_time)
814	{
815	gettimeofday (&tv_now, 0);
816
817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
818	break;
819	}
820	}
821
822	if (nreqs <= max_outstanding)
823	break;
824		577
825	poll_wait ();	578	poll_wait ();
826
827	++maxreqs;
828	}	579	}
		580	}
829		581
830	unblock_sig ();	582	static void atfork_child (void)
831	return count;	583	{
		584	create_respipe ();
832	}	585	}
833		586
834	/*****************************************************************************/	587	/*****************************************************************************/
835	/* work around various missing functions */
836		588
837	#if !HAVE_PREADWRITE	589	#if !_POSIX_MAPPED_FILES
838	# define pread aio_pread	590	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
839	# define pwrite aio_pwrite	591	# define munmap(addr,length) (errno = ENOSYS, -1)
840
841	/*
842	* make our pread/pwrite safe against themselves, but not against
843	* normal read/write by using a mutex. slows down execution a lot,
844	* but that's your problem, not mine.
845	*/
846	static mutex_t preadwritelock = X_MUTEX_INIT;
847
848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
849	{
850	ssize_t res;
851	off_t ooffset;
852
853	X_LOCK (preadwritelock);
854	ooffset = lseek (fd, 0, SEEK_CUR);
855	lseek (fd, offset, SEEK_SET);
856	res = read (fd, buf, count);
857	lseek (fd, ooffset, SEEK_SET);
858	X_UNLOCK (preadwritelock);
859
860	return res;
861	}
862
863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
864	{
865	ssize_t res;
866	off_t ooffset;
867
868	X_LOCK (preadwritelock);
869	ooffset = lseek (fd, 0, SEEK_CUR);
870	lseek (fd, offset, SEEK_SET);
871	res = write (fd, buf, count);
872	lseek (fd, offset, SEEK_SET);
873	X_UNLOCK (preadwritelock);
874
875	return res;
876	}
877	#endif
878
879	#ifndef HAVE_FUTIMES
880
881	# define utimes(path,times) aio_utimes (path, times)
882	# define futimes(fd,times) aio_futimes (fd, times)
883
884	int aio_utimes (const char *filename, const struct timeval times[2])
885	{
886	if (times)
887	{
888	struct utimbuf buf;
889
890	buf.actime = times[0].tv_sec;
891	buf.modtime = times[1].tv_sec;
892
893	return utime (filename, &buf);
894	}
895	else
896	return utime (filename, 0);
897	}
898
899	int aio_futimes (int fd, const struct timeval tv[2])
900	{
901	errno = ENOSYS;
902	return -1;
903	}
904
905	#endif
906
907	#if !HAVE_FDATASYNC
908	# define fdatasync fsync
909	#endif
910
911	#if !HAVE_READAHEAD
912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
913
914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
915	{
916	size_t todo = count;
917	dBUF;
918
919	while (todo > 0)
920	{
921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
922
923	pread (fd, aio_buf, len, offset);
924	offset += len;
925	todo -= len;
926	}
927
928	errno = 0;
929	return count;
930	}
931
932	#endif
933
934	#if !HAVE_READDIR_R
935	# define readdir_r aio_readdir_r
936
937	static mutex_t readdirlock = X_MUTEX_INIT;
938
939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
940	{
941	X_DIRENT *e;
942	int errorno;
943
944	X_LOCK (readdirlock);
945
946	e = readdir (dirp);
947	errorno = errno;
948
949	if (e)
950	{
951	*res = ent;
952	strcpy (ent->d_name, e->d_name);
953	}
954	else
955	*res = 0;
956
957	X_UNLOCK (readdirlock);
958
959	errno = errorno;
960	return e ? 0 : -1;
961	}
962	#endif
963
964	/* sendfile always needs emulation */
965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
966	{
967	ssize_t res;
968
969	if (!count)
970	return 0;
971
972	#if HAVE_SENDFILE
973	# if __linux
974	res = sendfile (ofd, ifd, &offset, count);
975
976	# elif __freebsd
977	/*
978	* Of course, the freebsd sendfile is a dire hack with no thoughts
979	* wasted on making it similar to other I/O functions.
980	*/
981	{
982	off_t sbytes;
983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
984
985	if (res < 0 && sbytes)
986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
987	res = sbytes;
988	}
989
990	# elif __hpux
991	res = sendfile (ofd, ifd, offset, count, 0, 0);
992
993	# elif __solaris
994	{
995	struct sendfilevec vec;
996	size_t sbytes;
997
998	vec.sfv_fd = ifd;
999	vec.sfv_flag = 0;
1000	vec.sfv_off = offset;
1001	vec.sfv_len = count;
1002
1003	res = sendfilev (ofd, &vec, 1, &sbytes);
1004
1005	if (res < 0 && sbytes)
1006	res = sbytes;
1007	}
1008
1009	# endif	592	#endif
1010	#else
1011	res = -1;
1012	errno = ENOSYS;
1013	#endif
1014		593
1015	if (res < 0	594	#define MMAP_MAGIC PERL_MAGIC_ext
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1017	#if __solaris
1018	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1019	#endif
1020	)
1021	)
1022	{
1023	/* emulate sendfile. this is a major pain in the ass */
1024	dBUF;
1025		595
1026	res = 0;	596	static int
		597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		598	{
		599	int old_errno = errno;
		600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		601	errno = old_errno;
1027		602
1028	while (count)	603	mg->mg_obj = 0; /* just in case */
1029	{
1030	ssize_t cnt;
1031
1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1033		604
1034	if (cnt <= 0)	605	SvREADONLY_off (sv);
1035	{	606	SvCUR_set (sv, 0);
1036	if (cnt && !res) res = -1;	607	SvLEN_set (sv, 0);
1037	break;	608	SvPVX (sv) = 0;
1038	}	609	SvOK_off (sv);
1039		610
1040	cnt = write (ofd, aio_buf, cnt);
1041
1042	if (cnt <= 0)
1043	{
1044	if (cnt && !res) res = -1;
1045	break;
1046	}
1047
1048	offset += cnt;
1049	res += cnt;
1050	count -= cnt;
1051	}
1052	}
1053
1054	return res;	611	return 0;
1055	}	612	}
1056		613
1057	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
1058	static void scandir_ (aio_req req, worker *self)	615	0, 0, 0, 0, mmap_free
1059	{	616	};
1060	DIR *dirp;
1061	union
1062	{
1063	X_DIRENT d;
1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1065	} *u;
1066	X_DIRENT *entp;
1067	char *name, *names;
1068	int memlen = 4096;
1069	int memofs = 0;
1070	int res = 0;
1071
1072	X_LOCK (wrklock);
1073	self->dirp = dirp = opendir (req->ptr1);
1074	self->dbuf = u = malloc (sizeof (*u));
1075	req->flags |= FLAG_PTR2_FREE;
1076	req->ptr2 = names = malloc (memlen);
1077	X_UNLOCK (wrklock);
1078
1079	if (dirp && u && names)
1080	for (;;)
1081	{
1082	errno = 0;
1083	readdir_r (dirp, &u->d, &entp);
1084
1085	if (!entp)
1086	break;
1087
1088	name = entp->d_name;
1089
1090	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1091	{
1092	int len = strlen (name) + 1;
1093
1094	res++;
1095
1096	while (memofs + len > memlen)
1097	{
1098	memlen *= 2;
1099	X_LOCK (wrklock);
1100	req->ptr2 = names = realloc (names, memlen);
1101	X_UNLOCK (wrklock);
1102
1103	if (!names)
1104	break;
1105	}
1106
1107	memcpy (names + memofs, name, len);
1108	memofs += len;
1109	}
1110	}
1111
1112	if (errno)
1113	res = -1;
1114
1115	req->result = res;
1116	}
1117		617
1118	/*****************************************************************************/	618	/*****************************************************************************/
1119		619
1120	X_THREAD_PROC (aio_proc)	620	static SV *
		621	get_cb (SV *cb_sv)
1121	{	622	{
1122	{//D	623	SvGETMAGIC (cb_sv);
1123	aio_req req;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1124	struct timespec ts;
1125	worker *self = (worker *)thr_arg;
1126
1127	/* try to distribute timeouts somewhat randomly */
1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1129
1130	for (;;)
1131	{
1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1133
1134	X_LOCK (reqlock);
1135
1136	for (;;)
1137	{
1138	self->req = req = reqq_shift (&req_queue);
1139
1140	if (req)
1141	break;
1142
1143	++idle;
1144
1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1146	== ETIMEDOUT)
1147	{
1148	if (idle > max_idle)
1149	{
1150	--idle;
1151	X_UNLOCK (reqlock);
1152	X_LOCK (wrklock);
1153	--started;
1154	X_UNLOCK (wrklock);
1155	goto quit;
1156	}
1157
1158	/* we are allowed to idle, so do so without any timeout */
1159	X_COND_WAIT (reqwait, reqlock);
1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1161	}
1162
1163	--idle;
1164	}
1165
1166	--nready;
1167
1168	X_UNLOCK (reqlock);
1169
1170	errno = 0; /* strictly unnecessary */
1171
1172	if (!(req->flags & FLAG_CANCELLED))
1173	switch (req->type)
1174	{
1175	case REQ_READ: req->result = req->offs >= 0
1176	? pread (req->int1, req->ptr1, req->size, req->offs)
1177	: read (req->int1, req->ptr1, req->size); break;
1178	case REQ_WRITE: req->result = req->offs >= 0
1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1180	: write (req->int1, req->ptr1, req->size); break;
1181
1182	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1184
1185	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1186	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1188
1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1195
1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1197	case REQ_CLOSE: req->result = close (req->int1); break;
1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1206
1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
1209	case REQ_READDIR: scandir_ (req, self); break;
1210
1211	case REQ_BUSY:
1212	#ifdef _WIN32
1213	Sleep (req->nv1 * 1000.);
1214	#else
1215	{
1216	struct timeval tv;
1217
1218	tv.tv_sec = req->nv1;
1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1220
1221	req->result = select (0, 0, 0, 0, &tv);
1222	}
1223	#endif
1224	break;
1225
1226	case REQ_UTIME:
1227	case REQ_FUTIME:
1228	{
1229	struct timeval tv[2];
1230	struct timeval *times;
1231
1232	if (req->nv1 != -1. || req->nv2 != -1.)
1233	{
1234	tv[0].tv_sec = req->nv1;
1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1236	tv[1].tv_sec = req->nv2;
1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1238
1239	times = tv;
1240	}
1241	else
1242	times = 0;
1243
1244
1245	req->result = req->type == REQ_FUTIME
1246	? futimes (req->int1, times)
1247	: utimes (req->ptr1, times);
1248	}
1249
1250	case REQ_GROUP:
1251	case REQ_NOP:
1252	break;
1253
1254	case REQ_QUIT:
1255	goto quit;
1256
1257	default:
1258	req->result = -1;
1259	break;
1260	}
1261
1262	req->errorno = errno;
1263
1264	X_LOCK (reslock);
1265
1266	++npending;
1267
1268	if (!reqq_push (&res_queue, req))
1269	{
1270	/* write a dummy byte to the pipe so fh becomes ready */
1271	write (respipe [1], &respipe, 1);
1272
1273	/* optionally signal the main thread asynchronously */
1274	if (main_sig)
1275	pthread_kill (main_tid, main_sig);
1276	}
1277
1278	self->req = 0;
1279	worker_clear (self);
1280
1281	X_UNLOCK (reslock);
1282	}
1283
1284	quit:
1285	X_LOCK (wrklock);
1286	worker_free (self);
1287	X_UNLOCK (wrklock);
1288
1289	return 0;
1290	}//D
1291	}
1292
1293	/*****************************************************************************/
1294
1295	static void atfork_prepare (void)
1296	{
1297	X_LOCK (wrklock);
1298	X_LOCK (reqlock);
1299	X_LOCK (reslock);
1300	#if !HAVE_PREADWRITE
1301	X_LOCK (preadwritelock);
1302	#endif
1303	#if !HAVE_READDIR_R
1304	X_LOCK (readdirlock);
1305	#endif
1306	}
1307
1308	static void atfork_parent (void)
1309	{
1310	#if !HAVE_READDIR_R
1311	X_UNLOCK (readdirlock);
1312	#endif
1313	#if !HAVE_PREADWRITE
1314	X_UNLOCK (preadwritelock);
1315	#endif
1316	X_UNLOCK (reslock);
1317	X_UNLOCK (reqlock);
1318	X_UNLOCK (wrklock);
1319	}
1320
1321	static void atfork_child (void)
1322	{
1323	aio_req prv;
1324
1325	while (prv = reqq_shift (&req_queue))
1326	req_destroy (prv);
1327
1328	while (prv = reqq_shift (&res_queue))
1329	req_destroy (prv);
1330
1331	while (wrk_first.next != &wrk_first)
1332	{
1333	worker *wrk = wrk_first.next;
1334
1335	if (wrk->req)
1336	req_destroy (wrk->req);
1337
1338	worker_clear (wrk);
1339	worker_free (wrk);
1340	}
1341
1342	started = 0;
1343	idle = 0;
1344	nreqs = 0;
1345	nready = 0;
1346	npending = 0;
1347
1348	close (respipe [0]);
1349	close (respipe [1]);
1350
1351	if (!create_pipe (respipe))
1352	croak ("cannot set result pipe to nonblocking mode");
1353
1354	atfork_parent ();
1355	}	625	}
1356		626
1357	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
1358	aio_req req; \	629	aio_req req; \
1359	int req_pri = next_pri; \	630	int req_pri = next_pri; \
1360	next_pri = DEFAULT_PRI + PRI_BIAS; \	631	next_pri = EIO_PRI_DEFAULT; \
1361	\	632	\
1362	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
1363	croak ("callback must be undef or of reference type"); \
1364	\	634	\
1365	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
1366	if (!req) \	636	if (!req) \
1367	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
1368	\	638	\
1369	req->callback = newSVsv (callback); \	639	req->callback = SvREFCNT_inc (cb_cv); \
1370	req->pri = req_pri	640	req->pri = req_pri
1371		641
1372	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
1373	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
1374	\	646	\
1375	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
1376	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
1377		649
1378	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
1379		651
1380	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
1381		653
1382	BOOT:	654	BOOT:
1383	{	655	{
1384	HV *stash = gv_stashpv ("IO::AIO", 1);	656	static const struct {
1385		657	const char *name;
1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	658	IV iv;
1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	659	} *civ, const_iv[] = {
1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	660	# define const_niv(name, value) { # name, (IV) value },
1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	661	# define const_iv(name) { # name, (IV) name },
1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	662	# define const_eio(name) { # name, (IV) EIO_ ## name },
		663	const_iv (EXDEV)
		664	const_iv (ENOSYS)
		665	const_iv (O_RDONLY)
		666	const_iv (O_WRONLY)
		667	const_iv (O_RDWR)
		668	const_iv (O_CREAT)
		669	const_iv (O_TRUNC)
		670	const_iv (O_EXCL)
		671	const_iv (O_APPEND)
1391	#ifdef _WIN32	672	#ifndef _WIN32
1392	X_MUTEX_CHECK (wrklock);	673	const_iv (S_IFIFO)
1393	X_MUTEX_CHECK (reslock);
1394	X_MUTEX_CHECK (reqlock);
1395	X_MUTEX_CHECK (reqwait);
1396	X_MUTEX_CHECK (preadwritelock);
1397	X_MUTEX_CHECK (readdirlock);
1398	#else
1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1401	#endif	674	#endif
		675	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		676	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		677	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		678	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		679	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		680	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1402		681
1403	if (!create_pipe (respipe))	682	const_iv (ST_RDONLY)
1404	croak ("cannot set result pipe to nonblocking mode");	683	const_iv (ST_NOSUID)
		684	const_iv (ST_NODEV)
		685	const_iv (ST_NOEXEC)
		686	const_iv (ST_SYNCHRONOUS)
		687	const_iv (ST_MANDLOCK)
		688	const_iv (ST_WRITE)
		689	const_iv (ST_APPEND)
		690	const_iv (ST_IMMUTABLE)
		691	const_iv (ST_NOATIME)
		692	const_iv (ST_NODIRATIME)
		693	const_iv (ST_RELATIME)
1405		694
1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	695	const_iv (PROT_EXEC)
		696	const_iv (PROT_NONE)
		697	const_iv (PROT_READ)
		698	const_iv (PROT_WRITE)
		699
		700	/*const_iv (MAP_FIXED)*/
		701	const_iv (MAP_PRIVATE)
		702	const_iv (MAP_SHARED)
		703	const_iv (MAP_ANONYMOUS)
		704
		705	/* linuxish */
		706	const_iv (MAP_HUGETLB)
		707	const_iv (MAP_LOCKED)
		708	const_iv (MAP_NORESERVE)
		709	const_iv (MAP_POPULATE)
		710	const_iv (MAP_NONBLOCK)
		711
		712	const_iv (MCL_FUTURE)
		713	const_iv (MCL_CURRENT)
		714
		715	const_eio (MS_ASYNC)
		716	const_eio (MS_INVALIDATE)
		717	const_eio (MS_SYNC)
		718
		719	const_eio (MT_MODIFY)
		720
		721	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		722	const_eio (SYNC_FILE_RANGE_WRITE)
		723	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		724
		725	const_eio (READDIR_DENTS)
		726	const_eio (READDIR_DIRS_FIRST)
		727	const_eio (READDIR_STAT_ORDER)
		728	const_eio (READDIR_FOUND_UNKNOWN)
		729
		730	const_eio (DT_UNKNOWN)
		731	const_eio (DT_FIFO)
		732	const_eio (DT_CHR)
		733	const_eio (DT_DIR)
		734	const_eio (DT_BLK)
		735	const_eio (DT_REG)
		736	const_eio (DT_LNK)
		737	const_eio (DT_SOCK)
		738	const_eio (DT_WHT)
		739	};
		740
		741	aio_stash = gv_stashpv ("IO::AIO" , 1);
		742	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		743	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		744
		745	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		746	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		747
		748	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		749
		750	create_respipe ();
		751
		752	if (eio_init (want_poll, done_poll) < 0)
		753	croak ("IO::AIO: unable to initialise eio library");
		754
		755	/* atfork child called in fifo order, so before eio's handler */
		756	X_THREAD_ATFORK (0, 0, atfork_child);
1407	}	757	}
1408		758
1409	void	759	void
1410	max_poll_reqs (int nreqs)	760	max_poll_reqs (int nreqs)
1411	PROTOTYPE: $	761	PROTOTYPE: $
1412	CODE:	762	CODE:
1413	max_poll_reqs = nreqs;	763	eio_set_max_poll_reqs (nreqs);
1414		764
1415	void	765	void
1416	max_poll_time (double nseconds)	766	max_poll_time (double nseconds)
1417	PROTOTYPE: $	767	PROTOTYPE: $
1418	CODE:	768	CODE:
1419	max_poll_time = nseconds * AIO_TICKS;	769	eio_set_max_poll_time (nseconds);
1420		770
1421	void	771	void
1422	min_parallel (int nthreads)	772	min_parallel (int nthreads)
1423	PROTOTYPE: $	773	PROTOTYPE: $
		774	CODE:
		775	eio_set_min_parallel (nthreads);
1424		776
1425	void	777	void
1426	max_parallel (int nthreads)	778	max_parallel (int nthreads)
1427	PROTOTYPE: $	779	PROTOTYPE: $
		780	CODE:
		781	eio_set_max_parallel (nthreads);
1428		782
1429	void	783	void
1430	max_idle (int nthreads)	784	max_idle (int nthreads)
1431	PROTOTYPE: $	785	PROTOTYPE: $
1432	CODE:	786	CODE:
1433	set_max_idle (nthreads);	787	eio_set_max_idle (nthreads);
1434		788
1435	int	789	void
1436	max_outstanding (int maxreqs)	790	max_outstanding (int maxreqs)
1437	PROTOTYPE: $	791	PROTOTYPE: $
1438	CODE:	792	CODE:
1439	RETVAL = max_outstanding;
1440	max_outstanding = maxreqs;	793	max_outstanding = maxreqs;
1441	OUTPUT:
1442	RETVAL
1443		794
1444	void	795	void
1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	796	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1446	PROTOTYPE: $$$;$	797	PROTOTYPE: $$$;$
1447	PPCODE:	798	PPCODE:
1448	{	799	{
1449	dREQ;	800	dREQ;
1450		801
1451	req->type = REQ_OPEN;	802	req->type = EIO_OPEN;
1452	req->sv1 = newSVsv (pathname);	803	req->sv1 = newSVsv (pathname);
1453	req->ptr1 = SvPVbyte_nolen (req->sv1);	804	req->ptr1 = SvPVbyte_nolen (req->sv1);
1454	req->int1 = flags;	805	req->int1 = flags;
1455	req->mode = mode;	806	req->int2 = mode;
1456		807
1457	REQ_SEND;	808	REQ_SEND;
		809	}
		810
		811	void
		812	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		813	PROTOTYPE: $;$
		814	ALIAS:
		815	aio_fsync = EIO_FSYNC
		816	aio_fdatasync = EIO_FDATASYNC
		817	PPCODE:
		818	{
		819	int fd = s_fileno_croak (fh, 0);
		820	dREQ;
		821
		822	req->type = ix;
		823	req->sv1 = newSVsv (fh);
		824	req->int1 = fd;
		825
		826	REQ_SEND (req);
		827	}
		828
		829	void
		830	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		831	PROTOTYPE: $$$$;$
		832	PPCODE:
		833	{
		834	int fd = s_fileno_croak (fh, 0);
		835	dREQ;
		836
		837	req->type = EIO_SYNC_FILE_RANGE;
		838	req->sv1 = newSVsv (fh);
		839	req->int1 = fd;
		840	req->offs = offset;
		841	req->size = nbytes;
		842	req->int2 = flags;
		843
		844	REQ_SEND (req);
1458	}	845	}
1459		846
1460	void	847	void
1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)	848	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1462	PROTOTYPE: $;$	849	PROTOTYPE: $;$
1463	ALIAS:
1464	aio_close = REQ_CLOSE
1465	aio_fsync = REQ_FSYNC
1466	aio_fdatasync = REQ_FDATASYNC
1467	PPCODE:	850	PPCODE:
1468	{	851	{
		852	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		853	int fd = s_fileno_croak (fh, 0);
1469	dREQ;	854	dREQ;
1470		855
		856	if (close_pipe < 0)
		857	{
		858	int pipefd [2];
		859
		860	if (pipe (pipefd) < 0
		861	|| close (pipefd [1]) < 0
		862	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		863	abort (); /*D*/
		864
		865	close_pipe = pipefd [0];
		866	}
		867
1471	req->type = ix;	868	req->type = EIO_DUP2;
		869	req->int1 = close_pipe;
1472	req->sv1 = newSVsv (fh);	870	req->sv2 = newSVsv (fh);
1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	871	req->int2 = fd;
1474		872
1475	REQ_SEND (req);	873	REQ_SEND (req);
1476	}	874	}
1477		875
1478	void	876	void
1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	877	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1480	ALIAS:	878	ALIAS:
1481	aio_read = REQ_READ	879	aio_read = EIO_READ
1482	aio_write = REQ_WRITE	880	aio_write = EIO_WRITE
1483	PROTOTYPE: $$$$$;$	881	PROTOTYPE: $$$$$;$
1484	PPCODE:	882	PPCODE:
1485	{	883	{
1486	STRLEN svlen;	884	STRLEN svlen;
		885	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1487	char *svptr = SvPVbyte (data, svlen);	886	char *svptr = SvPVbyte (data, svlen);
1488	UV len = SvUV (length);	887	UV len = SvUV (length);
1489		888
1490	SvUPGRADE (data, SVt_PV);
1491	SvPOK_on (data);
1492
1493	if (dataoffset < 0)	889	if (dataoffset < 0)
1494	dataoffset += svlen;	890	dataoffset += svlen;
1495		891
1496	if (dataoffset < 0 || dataoffset > svlen)	892	if (dataoffset < 0 || dataoffset > svlen)
1497	croak ("dataoffset outside of data scalar");	893	croak ("dataoffset outside of data scalar");
1498		894
1499	if (ix == REQ_WRITE)	895	if (ix == EIO_WRITE)
1500	{	896	{
1501	/* write: check length and adjust. */	897	/* write: check length and adjust. */
1502	if (!SvOK (length) || len + dataoffset > svlen)	898	if (!SvOK (length) || len + dataoffset > svlen)
1503	len = svlen - dataoffset;	899	len = svlen - dataoffset;
1504	}	900	}
1505	else	901	else
1506	{	902	{
1507	/* read: grow scalar as necessary */	903	/* read: check type and grow scalar as necessary */
		904	SvUPGRADE (data, SVt_PV);
1508	svptr = SvGROW (data, len + dataoffset + 1);	905	svptr = SvGROW (data, len + dataoffset + 1);
1509	}	906	}
1510		907
1511	if (len < 0)
1512	croak ("length must not be negative");
1513
1514	{	908	{
1515	dREQ;	909	dREQ;
1516		910
1517	req->type = ix;	911	req->type = ix;
1518	req->sv1 = newSVsv (fh);	912	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	913	req->int1 = fd;
1520	: IoOFP (sv_2io (fh)));
1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	914	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1522	req->size = len;	915	req->size = len;
1523	req->sv2 = SvREFCNT_inc (data);	916	req->sv2 = SvREFCNT_inc (data);
1524	req->ptr1 = (char *)svptr + dataoffset;	917	req->ptr2 = (char *)svptr + dataoffset;
1525	req->stroffset = dataoffset;	918	req->stroffset = dataoffset;
1526		919
1527	if (!SvREADONLY (data))	920	if (!SvREADONLY (data))
1528	{	921	{
1529	SvREADONLY_on (data);	922	SvREADONLY_on (data);
…		…
1540	PPCODE:	933	PPCODE:
1541	{	934	{
1542	SV *data;	935	SV *data;
1543	dREQ;	936	dREQ;
1544		937
1545	data = newSV (NAME_MAX);
1546	SvPOK_on (data);
1547
1548	req->type = REQ_READLINK;	938	req->type = EIO_READLINK;
1549	req->sv1 = newSVsv (path);	939	req->sv1 = newSVsv (path);
1550	req->ptr2 = SvPVbyte_nolen (req->sv1);	940	req->ptr1 = SvPVbyte_nolen (req->sv1);
1551	req->sv2 = data;
1552	req->ptr1 = SvPVbyte_nolen (data);
1553		941
1554	REQ_SEND;	942	REQ_SEND;
1555	}	943	}
1556		944
1557	void	945	void
1558	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	946	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1559	PROTOTYPE: $$$$;$	947	PROTOTYPE: $$$$;$
1560	PPCODE:	948	PPCODE:
1561	{	949	{
		950	int ifd = s_fileno_croak (in_fh , 0);
		951	int ofd = s_fileno_croak (out_fh, 1);
1562	dREQ;	952	dREQ;
1563		953
1564	req->type = REQ_SENDFILE;	954	req->type = EIO_SENDFILE;
1565	req->sv1 = newSVsv (out_fh);	955	req->sv1 = newSVsv (out_fh);
1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	956	req->int1 = ofd;
1567	req->sv2 = newSVsv (in_fh);	957	req->sv2 = newSVsv (in_fh);
1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	958	req->int2 = ifd;
1569	req->offs = SvVAL64 (in_offset);	959	req->offs = in_offset;
1570	req->size = length;	960	req->size = length;
1571		961
1572	REQ_SEND;	962	REQ_SEND;
1573	}	963	}
1574		964
1575	void	965	void
1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	966	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1577	PROTOTYPE: $$$;$	967	PROTOTYPE: $$$;$
1578	PPCODE:	968	PPCODE:
1579	{	969	{
		970	int fd = s_fileno_croak (fh, 0);
1580	dREQ;	971	dREQ;
1581		972
1582	req->type = REQ_READAHEAD;	973	req->type = EIO_READAHEAD;
1583	req->sv1 = newSVsv (fh);	974	req->sv1 = newSVsv (fh);
1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	975	req->int1 = fd;
1585	req->offs = SvVAL64 (offset);	976	req->offs = offset;
1586	req->size = length;	977	req->size = length;
1587		978
1588	REQ_SEND;	979	REQ_SEND;
1589	}	980	}
1590		981
1591	void	982	void
1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	983	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1593	ALIAS:	984	ALIAS:
1594	aio_stat = REQ_STAT	985	aio_stat = EIO_STAT
1595	aio_lstat = REQ_LSTAT	986	aio_lstat = EIO_LSTAT
		987	aio_statvfs = EIO_STATVFS
1596	PPCODE:	988	PPCODE:
1597	{	989	{
1598	dREQ;	990	dREQ;
1599		991
1600	req->ptr2 = malloc (sizeof (Stat_t));
1601	if (!req->ptr2)
1602	{
1603	req_destroy (req);
1604	croak ("out of memory during aio_stat statdata allocation");
1605	}
1606
1607	req->flags |= FLAG_PTR2_FREE;
1608	req->sv1 = newSVsv (fh_or_path);	992	req->sv1 = newSVsv (fh_or_path);
1609		993
1610	if (SvPOK (fh_or_path))	994	if (SvPOK (req->sv1))
1611	{	995	{
1612	req->type = ix;	996	req->type = ix;
1613	req->ptr1 = SvPVbyte_nolen (req->sv1);	997	req->ptr1 = SvPVbyte_nolen (req->sv1);
1614	}	998	}
1615	else	999	else
1616	{	1000	{
1617	req->type = REQ_FSTAT;	1001	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1002	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1619	}	1003	}
1620		1004
1621	REQ_SEND;	1005	REQ_SEND;
1622	}	1006	}
…		…
1629		1013
1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1014	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1015	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1632	req->sv1 = newSVsv (fh_or_path);	1016	req->sv1 = newSVsv (fh_or_path);
1633		1017
1634	if (SvPOK (fh_or_path))	1018	if (SvPOK (req->sv1))
1635	{	1019	{
1636	req->type = REQ_UTIME;	1020	req->type = EIO_UTIME;
1637	req->ptr1 = SvPVbyte_nolen (req->sv1);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1638	}	1022	}
1639	else	1023	else
1640	{	1024	{
1641	req->type = REQ_FUTIME;	1025	req->type = EIO_FUTIME;
1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1026	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1643	}	1027	}
1644		1028
1645	REQ_SEND;	1029	REQ_SEND;
1646	}	1030	}
…		…
1652	dREQ;	1036	dREQ;
1653		1037
1654	req->sv1 = newSVsv (fh_or_path);	1038	req->sv1 = newSVsv (fh_or_path);
1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1039	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1656		1040
1657	if (SvPOK (fh_or_path))	1041	if (SvPOK (req->sv1))
1658	{	1042	{
1659	req->type = REQ_TRUNCATE;	1043	req->type = EIO_TRUNCATE;
1660	req->ptr1 = SvPVbyte_nolen (req->sv1);	1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
1661	}	1045	}
1662	else	1046	else
1663	{	1047	{
1664	req->type = REQ_FTRUNCATE;	1048	req->type = EIO_FTRUNCATE;
1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1049	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1666	}	1050	}
1667		1051
1668	REQ_SEND;	1052	REQ_SEND;
1669	}	1053	}
1670		1054
1671	void	1055	void
1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1056	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1057	ALIAS:
		1058	aio_chmod = EIO_CHMOD
		1059	aio_mkdir = EIO_MKDIR
1673	PPCODE:	1060	PPCODE:
1674	{	1061	{
1675	dREQ;	1062	dREQ;
1676		1063
1677	req->mode = mode;	1064	req->int2 = mode;
1678	req->sv1 = newSVsv (fh_or_path);	1065	req->sv1 = newSVsv (fh_or_path);
1679		1066
1680	if (SvPOK (fh_or_path))	1067	if (SvPOK (req->sv1))
1681	{	1068	{
1682	req->type = REQ_CHMOD;	1069	req->type = ix;
1683	req->ptr1 = SvPVbyte_nolen (req->sv1);	1070	req->ptr1 = SvPVbyte_nolen (req->sv1);
1684	}	1071	}
1685	else	1072	else
1686	{	1073	{
1687	req->type = REQ_FCHMOD;	1074	req->type = EIO_FCHMOD;
1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1075	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1689	}	1076	}
1690		1077
1691	REQ_SEND;	1078	REQ_SEND;
1692	}	1079	}
…		…
1699		1086
1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1087	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1088	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1702	req->sv1 = newSVsv (fh_or_path);	1089	req->sv1 = newSVsv (fh_or_path);
1703		1090
1704	if (SvPOK (fh_or_path))	1091	if (SvPOK (req->sv1))
1705	{	1092	{
1706	req->type = REQ_CHOWN;	1093	req->type = EIO_CHOWN;
1707	req->ptr1 = SvPVbyte_nolen (req->sv1);	1094	req->ptr1 = SvPVbyte_nolen (req->sv1);
1708	}	1095	}
1709	else	1096	else
1710	{	1097	{
1711	req->type = REQ_FCHOWN;	1098	req->type = EIO_FCHOWN;
1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1099	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1713	}	1100	}
1714		1101
1715	REQ_SEND;	1102	REQ_SEND;
1716	}	1103	}
1717		1104
1718	void	1105	void
		1106	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1107	PPCODE:
		1108	{
		1109	dREQ;
		1110
		1111	req->type = EIO_READDIR;
		1112	req->sv1 = newSVsv (pathname);
		1113	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1114	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1115
		1116	if (flags & EIO_READDIR_DENTS)
		1117	req->int1 |= EIO_READDIR_CUSTOM2;
		1118
		1119	REQ_SEND;
		1120	}
		1121
		1122	void
1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1123	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1720	ALIAS:	1124	ALIAS:
1721	aio_unlink = REQ_UNLINK	1125	aio_unlink = EIO_UNLINK
1722	aio_rmdir = REQ_RMDIR	1126	aio_rmdir = EIO_RMDIR
1723	aio_readdir = REQ_READDIR	1127	aio_readdir = EIO_READDIR
1724	PPCODE:	1128	PPCODE:
1725	{	1129	{
1726	dREQ;	1130	dREQ;
1727		1131
1728	req->type = ix;	1132	req->type = ix;
…		…
1731		1135
1732	REQ_SEND;	1136	REQ_SEND;
1733	}	1137	}
1734		1138
1735	void	1139	void
1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1737	PPCODE:
1738	{
1739	dREQ;
1740
1741	req->type = REQ_MKDIR;
1742	req->sv1 = newSVsv (pathname);
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	req->mode = mode;
1745
1746	REQ_SEND;
1747	}
1748
1749	void
1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1140	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1751	ALIAS:	1141	ALIAS:
1752	aio_link = REQ_LINK	1142	aio_link = EIO_LINK
1753	aio_symlink = REQ_SYMLINK	1143	aio_symlink = EIO_SYMLINK
1754	aio_rename = REQ_RENAME	1144	aio_rename = EIO_RENAME
1755	PPCODE:	1145	PPCODE:
1756	{	1146	{
1757	dREQ;	1147	dREQ;
1758		1148
1759	req->type = ix;	1149	req->type = ix;
1760	req->sv2 = newSVsv (oldpath);	1150	req->sv1 = newSVsv (oldpath);
		1151	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1152	req->sv2 = newSVsv (newpath);
1761	req->ptr2 = SvPVbyte_nolen (req->sv2);	1153	req->ptr2 = SvPVbyte_nolen (req->sv2);
1762	req->sv1 = newSVsv (newpath);
1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1764		1154
1765	REQ_SEND;	1155	REQ_SEND;
1766	}	1156	}
1767		1157
1768	void	1158	void
1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1159	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1770	PPCODE:	1160	PPCODE:
1771	{	1161	{
1772	dREQ;	1162	dREQ;
1773		1163
1774	req->type = REQ_MKNOD;	1164	req->type = EIO_MKNOD;
1775	req->sv1 = newSVsv (pathname);	1165	req->sv1 = newSVsv (pathname);
1776	req->ptr1 = SvPVbyte_nolen (req->sv1);	1166	req->ptr1 = SvPVbyte_nolen (req->sv1);
1777	req->mode = (mode_t)mode;	1167	req->int2 = (mode_t)mode;
1778	req->offs = dev;	1168	req->offs = dev;
1779		1169
1780	REQ_SEND;	1170	REQ_SEND;
1781	}	1171	}
1782		1172
1783	void	1173	void
		1174	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1175	ALIAS:
		1176	aio_mtouch = EIO_MTOUCH
		1177	aio_msync = EIO_MSYNC
		1178	PROTOTYPE: $$$$;$
		1179	PPCODE:
		1180	{
		1181	STRLEN svlen;
		1182	UV len = SvUV (length);
		1183	char *svptr = SvPVbyte (data, svlen);
		1184
		1185	if (offset < 0)
		1186	offset += svlen;
		1187
		1188	if (offset < 0 || offset > svlen)
		1189	croak ("offset outside of scalar");
		1190
		1191	if (!SvOK (length) || len + offset > svlen)
		1192	len = svlen - offset;
		1193
		1194	{
		1195	dREQ;
		1196
		1197	req->type = ix;
		1198	req->size = len;
		1199	req->sv2 = SvREFCNT_inc (data);
		1200	req->ptr2 = (char *)svptr + offset;
		1201	req->int1 = flags;
		1202
		1203	REQ_SEND;
		1204	}
		1205	}
		1206
		1207	void
1784	aio_busy (double delay, SV *callback=&PL_sv_undef)	1208	aio_busy (double delay, SV *callback=&PL_sv_undef)
1785	PPCODE:	1209	PPCODE:
1786	{	1210	{
1787	dREQ;	1211	dREQ;
1788		1212
1789	req->type = REQ_BUSY;	1213	req->type = EIO_BUSY;
1790	req->nv1 = delay < 0. ? 0. : delay;	1214	req->nv1 = delay < 0. ? 0. : delay;
1791		1215
1792	REQ_SEND;	1216	REQ_SEND;
1793	}	1217	}
1794		1218
…		…
1797	PROTOTYPE: ;$	1221	PROTOTYPE: ;$
1798	PPCODE:	1222	PPCODE:
1799	{	1223	{
1800	dREQ;	1224	dREQ;
1801		1225
1802	req->type = REQ_GROUP;	1226	req->type = EIO_GROUP;
1803		1227
1804	req_send (req);	1228	req_submit (req);
1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1229	XPUSHs (req_sv (req, aio_grp_stash));
1806	}	1230	}
1807		1231
1808	void	1232	void
1809	aio_nop (SV *callback=&PL_sv_undef)	1233	aio_nop (SV *callback=&PL_sv_undef)
		1234	ALIAS:
		1235	aio_nop = EIO_NOP
		1236	aio_sync = EIO_SYNC
1810	PPCODE:	1237	PPCODE:
1811	{	1238	{
1812	dREQ;	1239	dREQ;
1813		1240
1814	req->type = REQ_NOP;	1241	req->type = ix;
1815		1242
1816	REQ_SEND;	1243	REQ_SEND;
1817	}	1244	}
1818		1245
1819	int	1246	int
1820	aioreq_pri (int pri = 0)	1247	aioreq_pri (int pri = 0)
1821	PROTOTYPE: ;$	1248	PROTOTYPE: ;$
1822	CODE:	1249	CODE:
1823	RETVAL = next_pri - PRI_BIAS;	1250	RETVAL = next_pri;
1824	if (items > 0)	1251	if (items > 0)
1825	{	1252	{
1826	if (pri < PRI_MIN) pri = PRI_MIN;	1253	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1827	if (pri > PRI_MAX) pri = PRI_MAX;	1254	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1828	next_pri = pri + PRI_BIAS;	1255	next_pri = pri;
1829	}	1256	}
1830	OUTPUT:	1257	OUTPUT:
1831	RETVAL	1258	RETVAL
1832		1259
1833	void	1260	void
1834	aioreq_nice (int nice = 0)	1261	aioreq_nice (int nice = 0)
1835	CODE:	1262	CODE:
1836	nice = next_pri - nice;	1263	nice = next_pri - nice;
1837	if (nice < PRI_MIN) nice = PRI_MIN;	1264	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1838	if (nice > PRI_MAX) nice = PRI_MAX;	1265	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1839	next_pri = nice + PRI_BIAS;	1266	next_pri = nice;
1840		1267
1841	void	1268	void
1842	flush ()	1269	flush ()
1843	PROTOTYPE:	1270	PROTOTYPE:
1844	CODE:	1271	CODE:
1845	while (nreqs)	1272	while (eio_nreqs ())
1846	{	1273	{
1847	poll_wait ();	1274	poll_wait ();
1848	poll_cb ();	1275	poll_cb ();
1849	}	1276	}
1850		1277
…		…
1859		1286
1860	int	1287	int
1861	poll_fileno()	1288	poll_fileno()
1862	PROTOTYPE:	1289	PROTOTYPE:
1863	CODE:	1290	CODE:
1864	RETVAL = respipe [0];	1291	RETVAL = s_epipe_fd (&respipe);
1865	OUTPUT:	1292	OUTPUT:
1866	RETVAL	1293	RETVAL
1867		1294
1868	int	1295	int
1869	poll_cb(...)	1296	poll_cb(...)
…		…
1877	poll_wait()	1304	poll_wait()
1878	PROTOTYPE:	1305	PROTOTYPE:
1879	CODE:	1306	CODE:
1880	poll_wait ();	1307	poll_wait ();
1881		1308
1882	void
1883	setsig (int signum = SIGIO)
1884	PROTOTYPE: ;$
1885	CODE:
1886	{
1887	if (block_sig_level)
1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1889
1890	X_LOCK (reslock);
1891	main_tid = pthread_self ();
1892	main_sig = signum;
1893	X_UNLOCK (reslock);
1894
1895	if (main_sig && npending)
1896	pthread_kill (main_tid, main_sig);
1897	}
1898
1899	void
1900	aio_block (SV *cb)
1901	PROTOTYPE: &
1902	PPCODE:
1903	{
1904	int count;
1905
1906	block_sig ();
1907	PUSHMARK (SP);
1908	PUTBACK;
1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1910	SPAGAIN;
1911	unblock_sig ();
1912
1913	if (SvTRUE (ERRSV))
1914	croak (0);
1915
1916	XSRETURN (count);
1917	}
1918
1919	int	1309	int
1920	nreqs()	1310	nreqs()
1921	PROTOTYPE:	1311	PROTOTYPE:
1922	CODE:	1312	CODE:
1923	RETVAL = nreqs;	1313	RETVAL = eio_nreqs ();
1924	OUTPUT:	1314	OUTPUT:
1925	RETVAL	1315	RETVAL
1926		1316
1927	int	1317	int
1928	nready()	1318	nready()
1929	PROTOTYPE:	1319	PROTOTYPE:
1930	CODE:	1320	CODE:
1931	RETVAL = get_nready ();	1321	RETVAL = eio_nready ();
1932	OUTPUT:	1322	OUTPUT:
1933	RETVAL	1323	RETVAL
1934		1324
1935	int	1325	int
1936	npending()	1326	npending()
1937	PROTOTYPE:	1327	PROTOTYPE:
1938	CODE:	1328	CODE:
1939	RETVAL = get_npending ();	1329	RETVAL = eio_npending ();
1940	OUTPUT:	1330	OUTPUT:
1941	RETVAL	1331	RETVAL
1942		1332
1943	int	1333	int
1944	nthreads()	1334	nthreads()
1945	PROTOTYPE:	1335	PROTOTYPE:
1946	CODE:	1336	CODE:
1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1337	RETVAL = eio_nthreads ();
1948	RETVAL = started;
1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1950	OUTPUT:	1338	OUTPUT:
1951	RETVAL	1339	RETVAL
1952		1340
		1341	int
		1342	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1343	PROTOTYPE: $$$$
		1344	CODE:
		1345	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1346	RETVAL = posix_fadvise (fh, offset, length, advice);
		1347	#else
		1348	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1349	#endif
		1350	OUTPUT:
		1351	RETVAL
		1352
		1353	ssize_t
		1354	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1355	PROTOTYPE: $$$$
		1356	CODE:
		1357	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	void
		1362	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1363	PROTOTYPE: $$$$$;$
		1364	PPCODE:
		1365	sv_unmagic (scalar, MMAP_MAGIC);
		1366	{
		1367	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1368	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1369	if (addr == (void *)-1)
		1370	XSRETURN_NO;
		1371
		1372	/* we store the length in mg_obj, as namlen is I32 :/ */
		1373	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1374	->mg_obj = (SV *)length;
		1375
		1376	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1377	if (!(prot & PROT_WRITE))
		1378	SvREADONLY_on (scalar);
		1379
		1380	SvPVX (scalar) = (char *)addr;
		1381	SvCUR_set (scalar, length);
		1382	SvLEN_set (scalar, 0);
		1383	SvPOK_only (scalar);
		1384
		1385	XSRETURN_YES;
		1386	}
		1387
		1388	void
		1389	munmap (SV *scalar)
		1390	PROTOTYPE: $
		1391	CODE:
		1392	sv_unmagic (scalar, MMAP_MAGIC);
		1393
		1394	int
		1395	mlockall (int flags)
		1396	PROTOTYPE: $
		1397	CODE:
		1398	#if _POSIX_MEMLOCK
		1399	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1400	extern int mallopt (int, int);
		1401	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1402	#endif
		1403	mlockall (flags);
		1404	#else
		1405	RETVAL = -1;
		1406	errno = ENOSYS;
		1407	#endif
		1408	OUTPUT:
		1409	RETVAL
		1410
		1411	int
		1412	munlockall ()
		1413	PROTOTYPE:
		1414	CODE:
		1415	#if _POSIX_MEMLOCK
		1416	munlockall ();
		1417	#else
		1418	RETVAL = -1;
		1419	errno = ENOSYS;
		1420	#endif
		1421	OUTPUT:
		1422	RETVAL
		1423
		1424	void _on_next_submit (SV *cb)
		1425	CODE:
		1426	SvREFCNT_dec (on_next_submit);
		1427	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1428
1953	PROTOTYPES: DISABLE	1429	PROTOTYPES: DISABLE
1954		1430
1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1431	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1956		1432
1957	void	1433	void
1958	cancel (aio_req_ornot req)	1434	cancel (aio_req_ornot req)
1959	CODE:	1435	CODE:
1960	req_cancel (req);	1436	eio_cancel (req);
1961		1437
1962	void	1438	void
1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1439	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1964	CODE:	1440	PPCODE:
		1441	{
		1442	if (GIMME_V != G_VOID)
		1443	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1444
		1445	if (items > 1)
		1446	{
		1447	SV *cb_cv =get_cb (callback);
		1448
1965	SvREFCNT_dec (req->callback);	1449	SvREFCNT_dec (req->callback);
1966	req->callback = newSVsv (callback);	1450	req->callback = SvREFCNT_inc (cb_cv);
		1451	}
		1452	}
1967		1453
1968	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1969		1455
1970	void	1456	void
1971	add (aio_req grp, ...)	1457	add (aio_req grp, ...)
1972	PPCODE:	1458	PPCODE:
1973	{	1459	{
1974	int i;	1460	int i;
1975	aio_req req;
1976
1977	if (main_sig && !block_sig_level)
1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1979		1461
1980	if (grp->int1 == 2)	1462	if (grp->int1 == 2)
1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1463	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1982		1464
1983	for (i = 1; i < items; ++i )	1465	for (i = 1; i < items; ++i )
1984	{	1466	{
		1467	aio_req req;
		1468
1985	if (GIMME_V != G_VOID)	1469	if (GIMME_V != G_VOID)
1986	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1470	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1987		1471
1988	req = SvAIO_REQ (ST (i));	1472	req = SvAIO_REQ (ST (i));
1989		1473
1990	if (req)	1474	if (req)
1991	{	1475	eio_grp_add (grp, req);
1992	++grp->size;
1993	req->grp = grp;
1994
1995	req->grp_prev = 0;
1996	req->grp_next = grp->grp_first;
1997
1998	if (grp->grp_first)
1999	grp->grp_first->grp_prev = req;
2000
2001	grp->grp_first = req;
2002	}
2003	}	1476	}
2004	}	1477	}
2005		1478
2006	void	1479	void
2007	cancel_subs (aio_req_ornot req)	1480	cancel_subs (aio_req_ornot req)
…		…
2016	AV *av;	1489	AV *av;
2017		1490
2018	grp->errorno = errno;	1491	grp->errorno = errno;
2019		1492
2020	av = newAV ();	1493	av = newAV ();
		1494	av_extend (av, items - 1);
2021		1495
2022	for (i = 1; i < items; ++i )	1496	for (i = 1; i < items; ++i )
2023	av_push (av, newSVsv (ST (i)));	1497	av_push (av, newSVsv (ST (i)));
2024		1498
2025	SvREFCNT_dec (grp->sv1);	1499	SvREFCNT_dec (grp->sv1);
…		…
2032	grp->errorno = errorno;	1506	grp->errorno = errorno;
2033		1507
2034	void	1508	void
2035	limit (aio_req grp, int limit)	1509	limit (aio_req grp, int limit)
2036	CODE:	1510	CODE:
2037	grp->int2 = limit;	1511	eio_grp_limit (grp, limit);
2038	aio_grp_feed (grp);
2039		1512
2040	void	1513	void
2041	feed (aio_req grp, SV *callback=&PL_sv_undef)	1514	feed (aio_req grp, SV *callback=&PL_sv_undef)
2042	CODE:	1515	CODE:
2043	{	1516	{
2044	SvREFCNT_dec (grp->sv2);	1517	SvREFCNT_dec (grp->sv2);
2045	grp->sv2 = newSVsv (callback);	1518	grp->sv2 = newSVsv (callback);
		1519	grp->feed = aio_grp_feed;
2046		1520
2047	if (grp->int2 <= 0)	1521	if (grp->int2 <= 0)
2048	grp->int2 = 2;	1522	grp->int2 = 2;
2049		1523
2050	aio_grp_feed (grp);	1524	eio_grp_limit (grp, grp->int2);
2051	}	1525	}
2052		1526

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