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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.101 by root, Fri Jun 1 13:25:51 2007 UTC vs.
Revision 1.166 by root, Sun May 9 20:43:28 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 */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif	75	#endif
38	#endif
39		76
40	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
41	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
42		82
43	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif
47
48	/* buffer size for various temporary buffers */
49	#define AIO_BUFSIZE 65536
50		84
51	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
53	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
54	#else	90	#else
		91	# define VAL64 NV
55	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
56	#endif	94	#endif
57		95
58	#define dBUF \	96	/*****************************************************************************/
59	char *aio_buf; \	97
60	LOCK (wrklock); \	98	#if __GNUC__ >= 3
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
62	UNLOCK (wrklock); \	100	#else
63	if (!aio_buf) \	101	# define expect(expr,value) (expr)
64	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	/*****************************************************************************/
65		108
66	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)
67		214
68	enum {	215	enum {
69	REQ_QUIT,	216	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	217	};
84		218
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		220
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *callback;
93	SV *sv1, *sv2;
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99
100	STRLEN stroffset;
101	int type;
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};
118
119	typedef aio_cb *aio_req;	221	typedef eio_req *aio_req;
120	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
121		223
122	enum {	224	static SV *on_next_submit;
123	PRI_MIN = -4,	225	static int next_pri = EIO_PRI_DEFAULT;
124	PRI_MAX = 4,	226	static int max_outstanding;
125		227
126	DEFAULT_PRI = 0,	228	static s_epipe respipe;
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130		229
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142
143	static thread_t main_tid;
144	static int main_sig;
145	static int block_sig_level;
146
147	void block_sig ()
148	{
149	sigset_t ss;
150
151	if (block_sig_level++)
152	return;
153
154	if (!main_sig)
155	return;
156
157	sigemptyset (&ss);
158	sigaddset (&ss, main_sig);
159	pthread_sigmask (SIG_BLOCK, &ss, 0);
160	}
161
162	void unblock_sig ()
163	{
164	sigset_t ss;
165
166	if (--block_sig_level)
167	return;
168
169	if (!main_sig)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{
202	closedir (wrk->dirp);
203	wrk->dirp = 0;
204	}
205
206	if (wrk->dbuf)
207	{
208	free (wrk->dbuf);
209	wrk->dbuf = 0;
210	}
211	}
212
213	static void worker_free (worker *wrk)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;
308
309	--q->size;
310
311	for (pri = NUM_PRI; pri--; )
312	{
313	aio_req req = q->qs[pri];
314
315	if (req)
316	{
317	if (!(q->qs[pri] = req->next))
318	q->qe[pri] = 0;
319
320	return req;
321	}
322	}
323
324	abort ();
325	}
326
327	static int poll_cb ();
328	static int req_invoke (aio_req req);
329	static void req_destroy (aio_req req);	230	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	231	static void req_cancel (aio_req req);
331		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
332	/* must be called at most once */	245	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
334	{	247	{
335	if (!req->self)	248	if (!req->self)
336	{	249	{
337	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339	}	252	}
340		253
341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342	}	255	}
343		256
344	static aio_req SvAIO_REQ (SV *sv)	257	static aio_req SvAIO_REQ (SV *sv)
345	{	258	{
346	MAGIC *mg;	259	MAGIC *mg;
347		260
348	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")))
349	croak ("object of class " AIO_REQ_KLASS " expected");	265	croak ("object of class IO::AIO::REQ expected");
350		266
351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352		268
353	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	270	}
355		271
356	static void aio_grp_feed (aio_req grp)	272	static void aio_grp_feed (aio_req grp)
357	{	273	{
358	block_sig ();	274	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	275	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	276	dSP;
367		277
368	ENTER;	278	ENTER;
369	SAVETMPS;	279	SAVETMPS;
370	PUSHMARK (SP);	280	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	281	XPUSHs (req_sv (grp, aio_grp_stash));
372	PUTBACK;	282	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	284	SPAGAIN;
375	FREETMPS;	285	FREETMPS;
376	LEAVE;	286	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	287	}
387
388	unblock_sig ();
389	}	288	}
390		289
391	static void aio_grp_dec (aio_req grp)	290	static void req_submit (eio_req *req)
392	{	291	{
393	--grp->size;	292	eio_submit (req);
394		293
395	/* call feeder, if applicable */	294	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	295	{
401	block_sig ();	296	dSP;
		297	SV *cb = sv_2mortal (on_next_submit);
402		298
403	if (!req_invoke (grp))	299	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		300
410	req_destroy (grp);	301	PUSHMARK (SP);
411	unblock_sig ();	302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
412	}	304	}
413	}	305	}
414		306
415	static int req_invoke (aio_req req)	307	static int req_invoke (eio_req *req)
416	{	308	{
417	dSP;
418
419	if (req->flags & FLAG_SV2_RO_OFF)	309	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	310	SvREADONLY_off (req->sv2);
421		311
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	312	if (!EIO_CANCELLED (req) && req->callback)
423	{	313	{
		314	dSP;
		315	static SV *sv_result_cache; /* caches the result integer SV */
		316	SV *sv_result;
		317
424	ENTER;	318	ENTER;
425	SAVETMPS;	319	SAVETMPS;
426	PUSHMARK (SP);	320	PUSHMARK (SP);
427	EXTEND (SP, 1);	321	EXTEND (SP, 1);
428		322
		323	/* do not recreate the result IV from scratch each time */
		324	if (expect_true (sv_result_cache))
		325	{
		326	sv_result = sv_result_cache; sv_result_cache = 0;
		327	SvIV_set (sv_result, req->result);
		328	}
		329	else
		330	{
		331	sv_result = newSViv (req->result);
		332	SvREADONLY_on (sv_result);
		333	}
		334
429	switch (req->type)	335	switch (req->type)
430	{	336	{
431	case REQ_READDIR:	337	case EIO_READDIR:
432	{	338	{
433	SV *rv = &PL_sv_undef;	339	SV *rv = &PL_sv_undef;
434		340
435	if (req->result >= 0)	341	if (req->result >= 0)
436	{	342	{
437	int i;	343	int i;
438	char *buf = req->ptr2;	344	char *names = (char *)req->ptr2;
		345	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	346	AV *av = newAV ();
440		347
441	av_extend (av, req->result - 1);	348	av_extend (av, req->result - 1);
442		349
443	for (i = 0; i < req->result; ++i)	350	for (i = 0; i < req->result; ++i)
444	{	351	{
445	SV *sv = newSVpv (buf, 0);	352	if (req->int1 & EIO_READDIR_DENTS)
		353	{
		354	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		355
		356	if (req->int1 & EIO_READDIR_CUSTOM2)
		357	{
		358	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		359	AV *avent = newAV ();
		360
		361	av_extend (avent, 2);
		362
		363	if (!sv_type [ent->type])
		364	{
		365	sv_type [ent->type] = newSViv (ent->type);
		366	SvREADONLY_on (sv_type [ent->type]);
		367	}
		368
		369	av_store (avent, 0, namesv);
		370	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		371	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		372
		373	av_store (av, i, newRV_noinc ((SV *)avent));
		374	}
		375	else
447	av_store (av, i, sv);	376	av_store (av, i, namesv);
		377
		378	++ent;
		379	}
		380	else
		381	{
		382	SV *name = newSVpv (names, 0);
		383	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	384	names += SvCUR (name) + 1;
		385	}
449	}	386	}
450		387
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	388	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	389	}
453		390
454	PUSHs (rv);	391	PUSHs (rv);
		392
		393	if (req->int1 & EIO_READDIR_CUSTOM1)
		394	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	395	}
456	break;	396	break;
457		397
458	case REQ_OPEN:	398	case EIO_OPEN:
459	{	399	{
460	/* convert fd to fh */	400	/* convert fd to fh */
461	SV *fh;	401	SV *fh = &PL_sv_undef;
462		402
463	PUSHs (sv_2mortal (newSViv (req->result)));	403	if (req->result >= 0)
464	PUTBACK;	404	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	405	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	406	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		407	char sym [64];
		408	int symlen;
		409
		410	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		411	gv_init (gv, aio_stash, sym, symlen, 0);
467		412
468	fh = POPs;	413	symlen = snprintf (
469	PUSHMARK (SP);	414	sym,
		415	sizeof (sym),
		416	"%s&=%d",
		417	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		418	(int)req->result
		419	);
		420
		421	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		422	fh = (SV *)gv;
		423	}
		424
470	XPUSHs (fh);	425	PUSHs (fh);
471	}	426	}
472	break;	427	break;
473		428
		429	case EIO_STATVFS:
		430	case EIO_FSTATVFS:
		431	{
		432	SV *rv = &PL_sv_undef;
		433
		434	if (req->result >= 0)
		435	{
		436	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		437	HV *hv = newHV ();
		438
		439	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		440
		441	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		442	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		443	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		444	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		445	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		446	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		447	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		448	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		449	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		450	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		451	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		452	}
		453
		454	PUSHs (rv);
		455	}
		456
		457	break;
		458
474	case REQ_GROUP:	459	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	460	req->int1 = 2; /* mark group as finished */
476		461
477	if (req->sv1)	462	if (req->sv1)
478	{	463	{
479	int i;	464	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	468	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	469	PUSHs (*av_fetch (av, i, 0));
485	}	470	}
486	break;	471	break;
487		472
488	case REQ_NOP:	473	case EIO_NOP:
489	case REQ_BUSY:	474	case EIO_BUSY:
490	break;	475	break;
491		476
492	case REQ_READLINK:	477	case EIO_READLINK:
493	if (req->result > 0)	478	if (req->result > 0)
494	{	479	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
495	SvCUR_set (req->sv2, req->result);
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);
498	}
499	break;	480	break;
500		481
501	case REQ_STAT:	482	case EIO_STAT:
502	case REQ_LSTAT:	483	case EIO_LSTAT:
503	case REQ_FSTAT:	484	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	485	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	486	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	487	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	488	PUSHs (sv_result);
508	break;	489	break;
509		490
510	case REQ_READ:	491	case EIO_READ:
		492	{
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	493	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	494	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));	495	SvPOK_only (req->sv2);
		496	SvSETMAGIC (req->sv2);
		497	PUSHs (sv_result);
		498	}
514	break;	499	break;
515		500
		501	case EIO_DUP2:
		502	if (req->result > 0)
		503	SvIV_set (sv_result, 0);
		504	/* FALLTHROUGH */
		505
516	default:	506	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	507	PUSHs (sv_result);
518	break;	508	break;
519	}	509	}
520		510
521	errno = req->errorno;	511	errno = req->errorno;
522		512
523	PUTBACK;	513	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	514	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	515	SPAGAIN;
		516
		517	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		518	SvREFCNT_dec (sv_result);
		519	else
		520	sv_result_cache = sv_result;
526		521
527	FREETMPS;	522	FREETMPS;
528	LEAVE;	523	LEAVE;
		524
		525	PUTBACK;
529	}	526	}
530		527
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	528	return !!SvTRUE (ERRSV);
546	}	529	}
547		530
548	static void req_destroy (aio_req req)	531	static void req_destroy (aio_req req)
549	{	532	{
550	if (req->self)	533	if (req->self)
…		…
555		538
556	SvREFCNT_dec (req->sv1);	539	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	540	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	541	SvREFCNT_dec (req->callback);
559		542
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	543	Safefree (req);
564	}	544	}
565		545
566	static void req_cancel_subs (aio_req grp)	546	static void req_cancel_subs (aio_req grp)
567	{	547	{
568	aio_req sub;	548	aio_req sub;
569		549
570	if (grp->type != REQ_GROUP)	550	if (grp->type != EIO_GROUP)
571	return;	551	return;
572		552
573	SvREFCNT_dec (grp->sv2);	553	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	554	grp->sv2 = 0;
575		555
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	556	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	557	}
579		558
580	static void req_cancel (aio_req req)	559	static void
		560	create_respipe (void)
581	{	561	{
582	req->flags |= FLAG_CANCELLED;	562	if (s_epipe_renew (&respipe))
583		563	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	564	}
586		565
587	static void *aio_proc (void *arg);
588
589	static void start_thread (void)
590	{
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	LOCK (wrklock);
597
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599	{
600	wrk->prev = &wrk_first;
601	wrk->next = wrk_first.next;
602	wrk_first.next->prev = wrk;
603	wrk_first.next = wrk;
604	++started;
605	}
606	else
607	free (wrk);
608
609	UNLOCK (wrklock);
610	}
611
612	static void maybe_start_thread ()
613	{
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}
623
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	566	static void poll_wait (void)
683	{	567	{
684	fd_set rfd;
685
686	while (nreqs)	568	while (eio_nreqs ())
687	{	569	{
688	int size;	570	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	571
		572	X_LOCK (reslock);
690	size = res_queue.size;	573	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	574	X_UNLOCK (reslock);
692		575
693	if (size)	576	if (size)
694	return;	577	return;
695		578
696	maybe_start_thread ();	579	etp_maybe_start_thread ();
697		580
698	FD_ZERO(&rfd);	581	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	582	}
703	}	583	}
704		584
705	static int poll_cb ()	585	static int poll_cb (void)
706	{	586	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	block_sig ();
718
719	for (;;)	587	for (;;)
720	{	588	{
721	for (;;)	589	int res = eio_poll ();
722	{
723	maybe_start_thread ();
724		590
725	LOCK (reslock);	591	if (res > 0)
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{
730	--npending;
731
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}
753	else
754	{
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);	592	croak (0);
760	}
761		593
762	count++;	594	if (!max_outstanding || max_outstanding > eio_nreqs ())
763	}	595	return res;
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}
778
779	if (nreqs <= max_outstanding)
780	break;
781		596
782	poll_wait ();	597	poll_wait ();
783
784	++maxreqs;
785	}	598	}
786
787	unblock_sig ();
788	return count;
789	}	599	}
790		600
791	static void create_pipe ()	601	static void atfork_child (void)
792	{	602	{
793	if (pipe (respipe))	603	create_respipe ();
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}	604	}
802		605
803	/*****************************************************************************/	606	/*****************************************************************************/
804	/* work around various missing functions */
805		607
806	#if !HAVE_PREADWRITE	608	#if !_POSIX_MAPPED_FILES
807	# define pread aio_pread	609	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
808	# define pwrite aio_pwrite	610	# define munmap(addr,length) (errno = ENOSYS, -1)
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{
819	ssize_t res;
820	off_t ooffset;
821
822	LOCK (preadwritelock);
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828
829	return res;
830	}
831
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;
938
939	#if HAVE_SENDFILE
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942
943	# elif __freebsd
944	/*
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952	if (res < 0 && sbytes)
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif	611	#endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981		612
982	if (res < 0	613	#define MMAP_MAGIC PERL_MAGIC_ext
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992		614
993	res = 0;	615	static int
		616	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		617	{
		618	int old_errno = errno;
		619	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		620	errno = old_errno;
994		621
995	while (count)	622	mg->mg_obj = 0; /* just in case */
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000		623
1001	if (cnt <= 0)	624	SvREADONLY_off (sv);
1002	{	625	SvCUR_set (sv, 0);
1003	if (cnt && !res) res = -1;	626	SvLEN_set (sv, 0);
1004	break;	627	SvPVX (sv) = 0;
1005	}	628	SvOK_off (sv);
1006		629
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;	630	return 0;
1022	}	631	}
1023		632
1024	/* read a full directory */	633	static MGVTBL mmap_vtbl = {
1025	static void scandir_ (aio_req req, worker *self)	634	0, 0, 0, 0, mmap_free
1026	{	635	};
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085		636
1086	/*****************************************************************************/	637	/*****************************************************************************/
1087		638
1088	static void *aio_proc (void *thr_arg)	639	static SV *
		640	get_cb (SV *cb_sv)
1089	{	641	{
1090	aio_req req;	642	SvGETMAGIC (cb_sv);
1091	struct timespec ts;	643	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)
1282	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();
1311
1312	atfork_parent ();
1313	}	644	}
1314		645
1315	#define dREQ \	646	#define dREQ \
		647	SV *cb_cv; \
1316	aio_req req; \	648	aio_req req; \
1317	int req_pri = next_pri; \	649	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	650	next_pri = EIO_PRI_DEFAULT; \
1319	\	651	\
1320	if (SvOK (callback) && !SvROK (callback)) \	652	cb_cv = get_cb (callback); \
1321	croak ("callback must be undef or of reference type"); \
1322	\	653	\
1323	Newz (0, req, 1, aio_cb); \	654	Newz (0, req, 1, eio_req); \
1324	if (!req) \	655	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	656	croak ("out of memory during eio_req allocation"); \
1326	\	657	\
1327	req->callback = newSVsv (callback); \	658	req->callback = SvREFCNT_inc (cb_cv); \
1328	req->pri = req_pri	659	req->pri = req_pri
1329		660
1330	#define REQ_SEND \	661	#define REQ_SEND \
		662	PUTBACK; \
1331	req_send (req); \	663	req_submit (req); \
		664	SPAGAIN; \
1332	\	665	\
1333	if (GIMME_V != G_VOID) \	666	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	667	XPUSHs (req_sv (req, aio_req_stash));
1335		668
1336	MODULE = IO::AIO PACKAGE = IO::AIO	669	MODULE = IO::AIO PACKAGE = IO::AIO
1337		670
1338	PROTOTYPES: ENABLE	671	PROTOTYPES: ENABLE
1339		672
1340	BOOT:	673	BOOT:
1341	{	674	{
		675	static const struct {
		676	const char *name;
		677	IV iv;
		678	} *civ, const_iv[] = {
		679	# define const_niv(name, value) { # name, (IV) value },
		680	# define const_iv(name) { # name, (IV) name },
		681	# define const_eio(name) { # name, (IV) EIO_ ## name },
		682	const_iv (EXDEV)
		683	const_iv (ENOSYS)
		684	const_iv (O_RDONLY)
		685	const_iv (O_WRONLY)
		686	const_iv (O_RDWR)
		687	const_iv (O_CREAT)
		688	const_iv (O_TRUNC)
		689	const_iv (O_EXCL)
		690	const_iv (O_APPEND)
		691	#ifndef _WIN32
		692	const_iv (S_IFIFO)
		693	#endif
		694	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		695	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		696	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		697	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		698	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		699	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		700
		701	const_iv (ST_RDONLY)
		702	const_iv (ST_NOSUID)
		703	const_iv (ST_NODEV)
		704	const_iv (ST_NOEXEC)
		705	const_iv (ST_SYNCHRONOUS)
		706	const_iv (ST_MANDLOCK)
		707	const_iv (ST_WRITE)
		708	const_iv (ST_APPEND)
		709	const_iv (ST_IMMUTABLE)
		710	const_iv (ST_NOATIME)
		711	const_iv (ST_NODIRATIME)
		712	const_iv (ST_RELATIME)
		713
		714	const_iv (PROT_EXEC)
		715	const_iv (PROT_NONE)
		716	const_iv (PROT_READ)
		717	const_iv (PROT_WRITE)
		718
		719	/*const_iv (MAP_FIXED)*/
		720	const_iv (MAP_PRIVATE)
		721	const_iv (MAP_SHARED)
		722	const_iv (MAP_ANONYMOUS)
		723
		724	/* linuxish */
		725	const_iv (MAP_HUGETLB)
		726	const_iv (MAP_LOCKED)
		727	const_iv (MAP_NORESERVE)
		728	const_iv (MAP_POPULATE)
		729	const_iv (MAP_NONBLOCK)
		730
		731	const_iv (MCL_FUTURE)
		732	const_iv (MCL_CURRENT)
		733
		734	const_eio (MS_ASYNC)
		735	const_eio (MS_INVALIDATE)
		736	const_eio (MS_SYNC)
		737
		738	const_eio (MT_MODIFY)
		739
		740	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		741	const_eio (SYNC_FILE_RANGE_WRITE)
		742	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		743
		744	const_eio (READDIR_DENTS)
		745	const_eio (READDIR_DIRS_FIRST)
		746	const_eio (READDIR_STAT_ORDER)
		747	const_eio (READDIR_FOUND_UNKNOWN)
		748
		749	const_eio (DT_UNKNOWN)
		750	const_eio (DT_FIFO)
		751	const_eio (DT_CHR)
		752	const_eio (DT_DIR)
		753	const_eio (DT_BLK)
		754	const_eio (DT_REG)
		755	const_eio (DT_LNK)
		756	const_eio (DT_SOCK)
		757	const_eio (DT_WHT)
		758	};
		759
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	760	aio_stash = gv_stashpv ("IO::AIO" , 1);
		761	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		762	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1343		763
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	764	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	765	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351		766
		767	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		768
1352	create_pipe ();	769	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	770
		771	if (eio_init (want_poll, done_poll) < 0)
		772	croak ("IO::AIO: unable to initialise eio library");
		773
		774	/* atfork child called in fifo order, so before eio's handler */
		775	X_THREAD_ATFORK (0, 0, atfork_child);
1354	}	776	}
1355		777
1356	void	778	void
1357	max_poll_reqs (int nreqs)	779	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	780	PROTOTYPE: $
1359	CODE:	781	CODE:
1360	max_poll_reqs = nreqs;	782	eio_set_max_poll_reqs (nreqs);
1361		783
1362	void	784	void
1363	max_poll_time (double nseconds)	785	max_poll_time (double nseconds)
1364	PROTOTYPE: $	786	PROTOTYPE: $
1365	CODE:	787	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	788	eio_set_max_poll_time (nseconds);
1367		789
1368	void	790	void
1369	min_parallel (int nthreads)	791	min_parallel (int nthreads)
1370	PROTOTYPE: $	792	PROTOTYPE: $
		793	CODE:
		794	eio_set_min_parallel (nthreads);
1371		795
1372	void	796	void
1373	max_parallel (int nthreads)	797	max_parallel (int nthreads)
1374	PROTOTYPE: $	798	PROTOTYPE: $
		799	CODE:
		800	eio_set_max_parallel (nthreads);
1375		801
1376	void	802	void
1377	max_idle (int nthreads)	803	max_idle (int nthreads)
1378	PROTOTYPE: $	804	PROTOTYPE: $
1379	CODE:	805	CODE:
1380	set_max_idle (nthreads);	806	eio_set_max_idle (nthreads);
1381		807
1382	int	808	void
1383	max_outstanding (int maxreqs)	809	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	810	PROTOTYPE: $
1385	CODE:	811	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	812	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		813
1391	void	814	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	815	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	816	PROTOTYPE: $$$;$
1394	PPCODE:	817	PPCODE:
1395	{	818	{
1396	dREQ;	819	dREQ;
1397		820
1398	req->type = REQ_OPEN;	821	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	822	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	823	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	824	req->int1 = flags;
1402	req->mode = mode;	825	req->int2 = mode;
1403		826
1404	REQ_SEND;	827	REQ_SEND;
		828	}
		829
		830	void
		831	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		832	PROTOTYPE: $;$
		833	ALIAS:
		834	aio_fsync = EIO_FSYNC
		835	aio_fdatasync = EIO_FDATASYNC
		836	PPCODE:
		837	{
		838	int fd = s_fileno_croak (fh, 0);
		839	dREQ;
		840
		841	req->type = ix;
		842	req->sv1 = newSVsv (fh);
		843	req->int1 = fd;
		844
		845	REQ_SEND (req);
		846	}
		847
		848	void
		849	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		850	PROTOTYPE: $$$$;$
		851	PPCODE:
		852	{
		853	int fd = s_fileno_croak (fh, 0);
		854	dREQ;
		855
		856	req->type = EIO_SYNC_FILE_RANGE;
		857	req->sv1 = newSVsv (fh);
		858	req->int1 = fd;
		859	req->offs = offset;
		860	req->size = nbytes;
		861	req->int2 = flags;
		862
		863	REQ_SEND (req);
1405	}	864	}
1406		865
1407	void	866	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	867	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	868	PROTOTYPE: $;$
		869	PPCODE:
		870	{
		871	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		872	int fd = s_fileno_croak (fh, 0);
		873	dREQ;
		874
		875	if (close_pipe < 0)
		876	{
		877	int pipefd [2];
		878
		879	if (pipe (pipefd) < 0
		880	|| close (pipefd [1]) < 0
		881	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		882	abort (); /*D*/
		883
		884	close_pipe = pipefd [0];
		885	}
		886
		887	req->type = EIO_DUP2;
		888	req->int1 = close_pipe;
		889	req->sv2 = newSVsv (fh);
		890	req->int2 = fd;
		891
		892	REQ_SEND (req);
		893	}
		894
		895	void
		896	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1410	ALIAS:	897	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC
1414	PPCODE:
1415	{
1416	dREQ;
1417
1418	req->type = ix;
1419	req->sv1 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1421
1422	REQ_SEND (req);
1423	}
1424
1425	void
1426	aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:
1428	aio_read = REQ_READ	898	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	899	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	900	PROTOTYPE: $$$$$;$
1431	PPCODE:	901	PPCODE:
1432	{	902	{
1433	STRLEN svlen;	903	STRLEN svlen;
		904	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	905	char *svptr = SvPVbyte (data, svlen);
1435		906	UV len = SvUV (length);
1436	SvUPGRADE (data, SVt_PV);
1437	SvPOK_on (data);
1438		907
1439	if (dataoffset < 0)	908	if (dataoffset < 0)
1440	dataoffset += svlen;	909	dataoffset += svlen;
1441		910
1442	if (dataoffset < 0 || dataoffset > svlen)	911	if (dataoffset < 0 || dataoffset > svlen)
1443	croak ("data offset outside of string");	912	croak ("dataoffset outside of data scalar");
1444		913
1445	if (ix == REQ_WRITE)	914	if (ix == EIO_WRITE)
1446	{	915	{
1447	/* write: check length and adjust. */	916	/* write: check length and adjust. */
1448	if (length < 0 || length + dataoffset > svlen)	917	if (!SvOK (length) || len + dataoffset > svlen)
1449	length = svlen - dataoffset;	918	len = svlen - dataoffset;
1450	}	919	}
1451	else	920	else
1452	{	921	{
1453	/* read: grow scalar as necessary */	922	/* read: check type and grow scalar as necessary */
		923	SvUPGRADE (data, SVt_PV);
1454	svptr = SvGROW (data, length + dataoffset + 1);	924	svptr = SvGROW (data, len + dataoffset + 1);
1455	}	925	}
1456
1457	if (length < 0)
1458	croak ("length must not be negative");
1459		926
1460	{	927	{
1461	dREQ;	928	dREQ;
1462		929
1463	req->type = ix;	930	req->type = ix;
1464	req->sv1 = newSVsv (fh);	931	req->sv1 = newSVsv (fh);
1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	932	req->int1 = fd;
1466	: IoOFP (sv_2io (fh)));
1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	933	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1468	req->size = length;	934	req->size = len;
1469	req->sv2 = SvREFCNT_inc (data);	935	req->sv2 = SvREFCNT_inc (data);
1470	req->ptr1 = (char *)svptr + dataoffset;	936	req->ptr2 = (char *)svptr + dataoffset;
1471	req->stroffset = dataoffset;	937	req->stroffset = dataoffset;
1472		938
1473	if (!SvREADONLY (data))	939	if (!SvREADONLY (data))
1474	{	940	{
1475	SvREADONLY_on (data);	941	SvREADONLY_on (data);
…		…
1486	PPCODE:	952	PPCODE:
1487	{	953	{
1488	SV *data;	954	SV *data;
1489	dREQ;	955	dREQ;
1490		956
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	957	req->type = EIO_READLINK;
1495	req->sv1 = newSVsv (path);	958	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->sv1);	959	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->sv2 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		960
1500	REQ_SEND;	961	REQ_SEND;
1501	}	962	}
1502		963
1503	void	964	void
1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	965	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $$$$;$	966	PROTOTYPE: $$$$;$
1506	PPCODE:	967	PPCODE:
1507	{	968	{
		969	int ifd = s_fileno_croak (in_fh , 0);
		970	int ofd = s_fileno_croak (out_fh, 1);
1508	dREQ;	971	dREQ;
1509		972
1510	req->type = REQ_SENDFILE;	973	req->type = EIO_SENDFILE;
1511	req->sv1 = newSVsv (out_fh);	974	req->sv1 = newSVsv (out_fh);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	975	req->int1 = ofd;
1513	req->sv2 = newSVsv (in_fh);	976	req->sv2 = newSVsv (in_fh);
1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	977	req->int2 = ifd;
1515	req->offs = SvVAL64 (in_offset);	978	req->offs = in_offset;
1516	req->size = length;	979	req->size = length;
1517		980
1518	REQ_SEND;	981	REQ_SEND;
1519	}	982	}
1520		983
1521	void	984	void
1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	985	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1523	PROTOTYPE: $$$;$	986	PROTOTYPE: $$$;$
1524	PPCODE:	987	PPCODE:
1525	{	988	{
		989	int fd = s_fileno_croak (fh, 0);
1526	dREQ;	990	dREQ;
1527		991
1528	req->type = REQ_READAHEAD;	992	req->type = EIO_READAHEAD;
1529	req->sv1 = newSVsv (fh);	993	req->sv1 = newSVsv (fh);
1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	994	req->int1 = fd;
1531	req->offs = SvVAL64 (offset);	995	req->offs = offset;
1532	req->size = length;	996	req->size = length;
1533		997
1534	REQ_SEND;	998	REQ_SEND;
1535	}	999	}
1536		1000
1537	void	1001	void
1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1002	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1539	ALIAS:	1003	ALIAS:
1540	aio_stat = REQ_STAT	1004	aio_stat = EIO_STAT
1541	aio_lstat = REQ_LSTAT	1005	aio_lstat = EIO_LSTAT
		1006	aio_statvfs = EIO_STATVFS
1542	PPCODE:	1007	PPCODE:
1543	{	1008	{
1544	dREQ;	1009	dREQ;
1545		1010
1546	req->ptr2 = malloc (sizeof (Stat_t));
1547	if (!req->ptr2)
1548	{
1549	req_destroy (req);
1550	croak ("out of memory during aio_stat statdata allocation");
1551	}
1552
1553	req->flags |= FLAG_PTR2_FREE;
1554	req->sv1 = newSVsv (fh_or_path);	1011	req->sv1 = newSVsv (fh_or_path);
1555		1012
1556	if (SvPOK (fh_or_path))	1013	if (SvPOK (req->sv1))
1557	{	1014	{
1558	req->type = ix;	1015	req->type = ix;
1559	req->ptr1 = SvPVbyte_nolen (req->sv1);	1016	req->ptr1 = SvPVbyte_nolen (req->sv1);
1560	}	1017	}
1561	else	1018	else
1562	{	1019	{
1563	req->type = REQ_FSTAT;	1020	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1021	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1565	}	1022	}
1566		1023
1567	REQ_SEND;	1024	REQ_SEND;
1568	}	1025	}
…		…
1575		1032
1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1033	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1034	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1578	req->sv1 = newSVsv (fh_or_path);	1035	req->sv1 = newSVsv (fh_or_path);
1579		1036
1580	if (SvPOK (fh_or_path))	1037	if (SvPOK (req->sv1))
1581	{	1038	{
1582	req->type = REQ_UTIME;	1039	req->type = EIO_UTIME;
1583	req->ptr1 = SvPVbyte_nolen (req->sv1);	1040	req->ptr1 = SvPVbyte_nolen (req->sv1);
1584	}	1041	}
1585	else	1042	else
1586	{	1043	{
1587	req->type = REQ_FUTIME;	1044	req->type = EIO_FUTIME;
1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1045	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1589	}	1046	}
1590		1047
1591	REQ_SEND;	1048	REQ_SEND;
1592	}	1049	}
1593		1050
1594	void	1051	void
1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1052	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1596	PPCODE:	1053	PPCODE:
1597	{	1054	{
1598	dREQ;	1055	dREQ;
1599		1056
1600	req->mode = mode;
1601	req->sv1 = newSVsv (fh_or_path);	1057	req->sv1 = newSVsv (fh_or_path);
		1058	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1602		1059
1603	if (SvPOK (fh_or_path))	1060	if (SvPOK (req->sv1))
1604	{	1061	{
1605	req->type = REQ_CHMOD;	1062	req->type = EIO_TRUNCATE;
1606	req->ptr1 = SvPVbyte_nolen (req->sv1);	1063	req->ptr1 = SvPVbyte_nolen (req->sv1);
1607	}	1064	}
1608	else	1065	else
1609	{	1066	{
1610	req->type = REQ_FCHMOD;	1067	req->type = EIO_FTRUNCATE;
1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1068	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1612	}	1069	}
1613		1070
1614	REQ_SEND;	1071	REQ_SEND;
1615	}	1072	}
1616		1073
1617	void	1074	void
1618	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1075	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1076	ALIAS:
		1077	aio_chmod = EIO_CHMOD
		1078	aio_mkdir = EIO_MKDIR
1619	PPCODE:	1079	PPCODE:
1620	{	1080	{
1621	dREQ;	1081	dREQ;
1622		1082
1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1083	req->int2 = mode;
1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1625	req->sv1 = newSVsv (fh_or_path);	1084	req->sv1 = newSVsv (fh_or_path);
1626		1085
1627	if (SvPOK (fh_or_path))	1086	if (SvPOK (req->sv1))
1628	{	1087	{
1629	req->type = REQ_CHOWN;	1088	req->type = ix;
1630	req->ptr1 = SvPVbyte_nolen (req->sv1);	1089	req->ptr1 = SvPVbyte_nolen (req->sv1);
1631	}	1090	}
1632	else	1091	else
1633	{	1092	{
1634	req->type = REQ_FCHOWN;	1093	req->type = EIO_FCHMOD;
1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1094	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1636	}	1095	}
1637		1096
1638	REQ_SEND;	1097	REQ_SEND;
1639	}	1098	}
1640		1099
1641	void	1100	void
		1101	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1102	PPCODE:
		1103	{
		1104	dREQ;
		1105
		1106	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1107	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1108	req->sv1 = newSVsv (fh_or_path);
		1109
		1110	if (SvPOK (req->sv1))
		1111	{
		1112	req->type = EIO_CHOWN;
		1113	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1114	}
		1115	else
		1116	{
		1117	req->type = EIO_FCHOWN;
		1118	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1119	}
		1120
		1121	REQ_SEND;
		1122	}
		1123
		1124	void
		1125	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1126	PPCODE:
		1127	{
		1128	dREQ;
		1129
		1130	req->type = EIO_READDIR;
		1131	req->sv1 = newSVsv (pathname);
		1132	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1133	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1134
		1135	if (flags & EIO_READDIR_DENTS)
		1136	req->int1 |= EIO_READDIR_CUSTOM2;
		1137
		1138	REQ_SEND;
		1139	}
		1140
		1141	void
1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1142	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1643	ALIAS:	1143	ALIAS:
1644	aio_unlink = REQ_UNLINK	1144	aio_unlink = EIO_UNLINK
1645	aio_rmdir = REQ_RMDIR	1145	aio_rmdir = EIO_RMDIR
1646	aio_readdir = REQ_READDIR	1146	aio_readdir = EIO_READDIR
1647	PPCODE:	1147	PPCODE:
1648	{	1148	{
1649	dREQ;	1149	dREQ;
1650		1150
1651	req->type = ix;	1151	req->type = ix;
…		…
1654		1154
1655	REQ_SEND;	1155	REQ_SEND;
1656	}	1156	}
1657		1157
1658	void	1158	void
1659	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1660	PPCODE:
1661	{
1662	dREQ;
1663
1664	req->type = REQ_MKDIR;
1665	req->sv1 = newSVsv (pathname);
1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
1667	req->mode = mode;
1668
1669	REQ_SEND;
1670	}
1671
1672	void
1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1159	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1674	ALIAS:	1160	ALIAS:
1675	aio_link = REQ_LINK	1161	aio_link = EIO_LINK
1676	aio_symlink = REQ_SYMLINK	1162	aio_symlink = EIO_SYMLINK
1677	aio_rename = REQ_RENAME	1163	aio_rename = EIO_RENAME
1678	PPCODE:	1164	PPCODE:
1679	{	1165	{
1680	dREQ;	1166	dREQ;
1681		1167
1682	req->type = ix;	1168	req->type = ix;
1683	req->sv2 = newSVsv (oldpath);	1169	req->sv1 = newSVsv (oldpath);
		1170	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1171	req->sv2 = newSVsv (newpath);
1684	req->ptr2 = SvPVbyte_nolen (req->sv2);	1172	req->ptr2 = SvPVbyte_nolen (req->sv2);
1685	req->sv1 = newSVsv (newpath);
1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1687		1173
1688	REQ_SEND;	1174	REQ_SEND;
1689	}	1175	}
1690		1176
1691	void	1177	void
1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1178	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1693	PPCODE:	1179	PPCODE:
1694	{	1180	{
1695	dREQ;	1181	dREQ;
1696		1182
1697	req->type = REQ_MKNOD;	1183	req->type = EIO_MKNOD;
1698	req->sv1 = newSVsv (pathname);	1184	req->sv1 = newSVsv (pathname);
1699	req->ptr1 = SvPVbyte_nolen (req->sv1);	1185	req->ptr1 = SvPVbyte_nolen (req->sv1);
1700	req->mode = (mode_t)mode;	1186	req->int2 = (mode_t)mode;
1701	req->offs = dev;	1187	req->offs = dev;
1702		1188
1703	REQ_SEND;	1189	REQ_SEND;
1704	}	1190	}
1705		1191
1706	void	1192	void
		1193	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1194	ALIAS:
		1195	aio_mtouch = EIO_MTOUCH
		1196	aio_msync = EIO_MSYNC
		1197	PROTOTYPE: $$$$;$
		1198	PPCODE:
		1199	{
		1200	STRLEN svlen;
		1201	UV len = SvUV (length);
		1202	char *svptr = SvPVbyte (data, svlen);
		1203
		1204	if (offset < 0)
		1205	offset += svlen;
		1206
		1207	if (offset < 0 || offset > svlen)
		1208	croak ("offset outside of scalar");
		1209
		1210	if (!SvOK (length) || len + offset > svlen)
		1211	len = svlen - offset;
		1212
		1213	{
		1214	dREQ;
		1215
		1216	req->type = ix;
		1217	req->size = len;
		1218	req->sv2 = SvREFCNT_inc (data);
		1219	req->ptr2 = (char *)svptr + offset;
		1220	req->int1 = flags;
		1221
		1222	REQ_SEND;
		1223	}
		1224	}
		1225
		1226	void
1707	aio_busy (double delay, SV *callback=&PL_sv_undef)	1227	aio_busy (double delay, SV *callback=&PL_sv_undef)
1708	PPCODE:	1228	PPCODE:
1709	{	1229	{
1710	dREQ;	1230	dREQ;
1711		1231
1712	req->type = REQ_BUSY;	1232	req->type = EIO_BUSY;
1713	req->nv1 = delay < 0. ? 0. : delay;	1233	req->nv1 = delay < 0. ? 0. : delay;
1714		1234
1715	REQ_SEND;	1235	REQ_SEND;
1716	}	1236	}
1717		1237
…		…
1720	PROTOTYPE: ;$	1240	PROTOTYPE: ;$
1721	PPCODE:	1241	PPCODE:
1722	{	1242	{
1723	dREQ;	1243	dREQ;
1724		1244
1725	req->type = REQ_GROUP;	1245	req->type = EIO_GROUP;
1726		1246
1727	req_send (req);	1247	req_submit (req);
1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1248	XPUSHs (req_sv (req, aio_grp_stash));
1729	}	1249	}
1730		1250
1731	void	1251	void
1732	aio_nop (SV *callback=&PL_sv_undef)	1252	aio_nop (SV *callback=&PL_sv_undef)
		1253	ALIAS:
		1254	aio_nop = EIO_NOP
		1255	aio_sync = EIO_SYNC
1733	PPCODE:	1256	PPCODE:
1734	{	1257	{
1735	dREQ;	1258	dREQ;
1736		1259
1737	req->type = REQ_NOP;	1260	req->type = ix;
1738		1261
1739	REQ_SEND;	1262	REQ_SEND;
1740	}	1263	}
1741		1264
1742	int	1265	int
1743	aioreq_pri (int pri = 0)	1266	aioreq_pri (int pri = 0)
1744	PROTOTYPE: ;$	1267	PROTOTYPE: ;$
1745	CODE:	1268	CODE:
1746	RETVAL = next_pri - PRI_BIAS;	1269	RETVAL = next_pri;
1747	if (items > 0)	1270	if (items > 0)
1748	{	1271	{
1749	if (pri < PRI_MIN) pri = PRI_MIN;	1272	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1750	if (pri > PRI_MAX) pri = PRI_MAX;	1273	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1751	next_pri = pri + PRI_BIAS;	1274	next_pri = pri;
1752	}	1275	}
1753	OUTPUT:	1276	OUTPUT:
1754	RETVAL	1277	RETVAL
1755		1278
1756	void	1279	void
1757	aioreq_nice (int nice = 0)	1280	aioreq_nice (int nice = 0)
1758	CODE:	1281	CODE:
1759	nice = next_pri - nice;	1282	nice = next_pri - nice;
1760	if (nice < PRI_MIN) nice = PRI_MIN;	1283	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1761	if (nice > PRI_MAX) nice = PRI_MAX;	1284	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1762	next_pri = nice + PRI_BIAS;	1285	next_pri = nice;
1763		1286
1764	void	1287	void
1765	flush ()	1288	flush ()
1766	PROTOTYPE:	1289	PROTOTYPE:
1767	CODE:	1290	CODE:
1768	while (nreqs)	1291	while (eio_nreqs ())
1769	{	1292	{
1770	poll_wait ();	1293	poll_wait ();
1771	poll_cb ();	1294	poll_cb ();
1772	}	1295	}
1773		1296
…		…
1782		1305
1783	int	1306	int
1784	poll_fileno()	1307	poll_fileno()
1785	PROTOTYPE:	1308	PROTOTYPE:
1786	CODE:	1309	CODE:
1787	RETVAL = respipe [0];	1310	RETVAL = s_epipe_fd (&respipe);
1788	OUTPUT:	1311	OUTPUT:
1789	RETVAL	1312	RETVAL
1790		1313
1791	int	1314	int
1792	poll_cb(...)	1315	poll_cb(...)
…		…
1800	poll_wait()	1323	poll_wait()
1801	PROTOTYPE:	1324	PROTOTYPE:
1802	CODE:	1325	CODE:
1803	poll_wait ();	1326	poll_wait ();
1804		1327
1805	void
1806	setsig (int signum = SIGIO)
1807	PROTOTYPE: ;$
1808	CODE:
1809	{
1810	if (block_sig_level)
1811	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1812
1813	LOCK (reslock);
1814	main_tid = pthread_self ();
1815	main_sig = signum;
1816	UNLOCK (reslock);
1817
1818	if (main_sig && npending)
1819	pthread_kill (main_tid, main_sig);
1820	}
1821
1822	void
1823	aio_block (SV *cb)
1824	PROTOTYPE: &
1825	PPCODE:
1826	{
1827	int count;
1828
1829	block_sig ();
1830	PUSHMARK (SP);
1831	PUTBACK;
1832	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1833	SPAGAIN;
1834	unblock_sig ();
1835
1836	if (SvTRUE (ERRSV))
1837	croak (0);
1838
1839	XSRETURN (count);
1840	}
1841
1842	int	1328	int
1843	nreqs()	1329	nreqs()
1844	PROTOTYPE:	1330	PROTOTYPE:
1845	CODE:	1331	CODE:
1846	RETVAL = nreqs;	1332	RETVAL = eio_nreqs ();
1847	OUTPUT:	1333	OUTPUT:
1848	RETVAL	1334	RETVAL
1849		1335
1850	int	1336	int
1851	nready()	1337	nready()
1852	PROTOTYPE:	1338	PROTOTYPE:
1853	CODE:	1339	CODE:
1854	RETVAL = get_nready ();	1340	RETVAL = eio_nready ();
1855	OUTPUT:	1341	OUTPUT:
1856	RETVAL	1342	RETVAL
1857		1343
1858	int	1344	int
1859	npending()	1345	npending()
1860	PROTOTYPE:	1346	PROTOTYPE:
1861	CODE:	1347	CODE:
1862	RETVAL = get_npending ();	1348	RETVAL = eio_npending ();
1863	OUTPUT:	1349	OUTPUT:
1864	RETVAL	1350	RETVAL
1865		1351
1866	int	1352	int
1867	nthreads()	1353	nthreads()
1868	PROTOTYPE:	1354	PROTOTYPE:
1869	CODE:	1355	CODE:
1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1356	RETVAL = eio_nthreads ();
1871	RETVAL = started;
1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1873	OUTPUT:	1357	OUTPUT:
1874	RETVAL	1358	RETVAL
1875		1359
		1360	int
		1361	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1362	PROTOTYPE: $$$$
		1363	CODE:
		1364	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1365	RETVAL = posix_fadvise (fh, offset, length, advice);
		1366	#else
		1367	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1368	#endif
		1369	OUTPUT:
		1370	RETVAL
		1371
		1372	ssize_t
		1373	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1374	PROTOTYPE: $$$$
		1375	CODE:
		1376	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1377	OUTPUT:
		1378	RETVAL
		1379
		1380	void
		1381	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1382	PROTOTYPE: $$$$$;$
		1383	PPCODE:
		1384	sv_unmagic (scalar, MMAP_MAGIC);
		1385	{
		1386	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1387	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1388	if (addr == (void *)-1)
		1389	XSRETURN_NO;
		1390
		1391	/* we store the length in mg_obj, as namlen is I32 :/ */
		1392	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1393	->mg_obj = (SV *)length;
		1394
		1395	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1396	if (!(prot & PROT_WRITE))
		1397	SvREADONLY_on (scalar);
		1398
		1399	SvPVX (scalar) = (char *)addr;
		1400	SvCUR_set (scalar, length);
		1401	SvLEN_set (scalar, 0);
		1402	SvPOK_only (scalar);
		1403
		1404	XSRETURN_YES;
		1405	}
		1406
		1407	void
		1408	munmap (SV *scalar)
		1409	PROTOTYPE: $
		1410	CODE:
		1411	sv_unmagic (scalar, MMAP_MAGIC);
		1412
		1413	int
		1414	mlockall (int flags)
		1415	PROTOTYPE: $
		1416	CODE:
		1417	#if _POSIX_MEMLOCK
		1418	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1419	extern int mallopt (int, int);
		1420	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1421	#endif
		1422	mlockall (flags);
		1423	#else
		1424	RETVAL = -1;
		1425	errno = ENOSYS;
		1426	#endif
		1427	OUTPUT:
		1428	RETVAL
		1429
		1430	int
		1431	munlockall ()
		1432	PROTOTYPE:
		1433	CODE:
		1434	#if _POSIX_MEMLOCK
		1435	munlockall ();
		1436	#else
		1437	RETVAL = -1;
		1438	errno = ENOSYS;
		1439	#endif
		1440	OUTPUT:
		1441	RETVAL
		1442
		1443	void _on_next_submit (SV *cb)
		1444	CODE:
		1445	SvREFCNT_dec (on_next_submit);
		1446	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1447
1876	PROTOTYPES: DISABLE	1448	PROTOTYPES: DISABLE
1877		1449
1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1450	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1879		1451
1880	void	1452	void
1881	cancel (aio_req_ornot req)	1453	cancel (aio_req_ornot req)
1882	CODE:	1454	CODE:
1883	req_cancel (req);	1455	eio_cancel (req);
1884		1456
1885	void	1457	void
1886	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1458	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1887	CODE:	1459	PPCODE:
		1460	{
		1461	if (GIMME_V != G_VOID)
		1462	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1463
		1464	if (items > 1)
		1465	{
		1466	SV *cb_cv =get_cb (callback);
		1467
1888	SvREFCNT_dec (req->callback);	1468	SvREFCNT_dec (req->callback);
1889	req->callback = newSVsv (callback);	1469	req->callback = SvREFCNT_inc (cb_cv);
		1470	}
		1471	}
1890		1472
1891	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1892		1474
1893	void	1475	void
1894	add (aio_req grp, ...)	1476	add (aio_req grp, ...)
1895	PPCODE:	1477	PPCODE:
1896	{	1478	{
1897	int i;	1479	int i;
1898	aio_req req;
1899
1900	if (main_sig && !block_sig_level)
1901	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1902		1480
1903	if (grp->int1 == 2)	1481	if (grp->int1 == 2)
1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1482	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1905		1483
1906	for (i = 1; i < items; ++i )	1484	for (i = 1; i < items; ++i )
1907	{	1485	{
		1486	aio_req req;
		1487
1908	if (GIMME_V != G_VOID)	1488	if (GIMME_V != G_VOID)
1909	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1489	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1910		1490
1911	req = SvAIO_REQ (ST (i));	1491	req = SvAIO_REQ (ST (i));
1912		1492
1913	if (req)	1493	if (req)
1914	{	1494	eio_grp_add (grp, req);
1915	++grp->size;
1916	req->grp = grp;
1917
1918	req->grp_prev = 0;
1919	req->grp_next = grp->grp_first;
1920
1921	if (grp->grp_first)
1922	grp->grp_first->grp_prev = req;
1923
1924	grp->grp_first = req;
1925	}
1926	}	1495	}
1927	}	1496	}
1928		1497
1929	void	1498	void
1930	cancel_subs (aio_req_ornot req)	1499	cancel_subs (aio_req_ornot req)
…		…
1939	AV *av;	1508	AV *av;
1940		1509
1941	grp->errorno = errno;	1510	grp->errorno = errno;
1942		1511
1943	av = newAV ();	1512	av = newAV ();
		1513	av_extend (av, items - 1);
1944		1514
1945	for (i = 1; i < items; ++i )	1515	for (i = 1; i < items; ++i )
1946	av_push (av, newSVsv (ST (i)));	1516	av_push (av, newSVsv (ST (i)));
1947		1517
1948	SvREFCNT_dec (grp->sv1);	1518	SvREFCNT_dec (grp->sv1);
…		…
1955	grp->errorno = errorno;	1525	grp->errorno = errorno;
1956		1526
1957	void	1527	void
1958	limit (aio_req grp, int limit)	1528	limit (aio_req grp, int limit)
1959	CODE:	1529	CODE:
1960	grp->int2 = limit;	1530	eio_grp_limit (grp, limit);
1961	aio_grp_feed (grp);
1962		1531
1963	void	1532	void
1964	feed (aio_req grp, SV *callback=&PL_sv_undef)	1533	feed (aio_req grp, SV *callback=&PL_sv_undef)
1965	CODE:	1534	CODE:
1966	{	1535	{
1967	SvREFCNT_dec (grp->sv2);	1536	SvREFCNT_dec (grp->sv2);
1968	grp->sv2 = newSVsv (callback);	1537	grp->sv2 = newSVsv (callback);
		1538	grp->feed = aio_grp_feed;
1969		1539
1970	if (grp->int2 <= 0)	1540	if (grp->int2 <= 0)
1971	grp->int2 = 2;	1541	grp->int2 = 2;
1972		1542
1973	aio_grp_feed (grp);	1543	eio_grp_limit (grp, grp->int2);
1974	}	1544	}
1975		1545

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