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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 1.165 by root, Sun May 9 20:42:55 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
		68	# include <sys/time.h>
		69	# include <sys/select.h>
		70	# include <unistd.h>
23	#include <utime.h>	71	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	72	# include <signal.h>
31	# elif __hpux	73	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	74
33	# elif __solaris /* not yet */
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;	309	dSP;
418		310
419	if (req->flags & FLAG_SV2_RO_OFF)	311	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	312	SvREADONLY_off (req->sv2);
421		313
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	314	if (!EIO_CANCELLED (req) && req->callback)
423	{	315	{
		316	static SV *sv_result_cache; /* caches the result integer SV */
		317	SV *sv_result;
		318
424	ENTER;	319	ENTER;
425	SAVETMPS;	320	SAVETMPS;
426	PUSHMARK (SP);	321	PUSHMARK (SP);
427	EXTEND (SP, 1);	322	EXTEND (SP, 1);
428		323
		324	/* do not recreate the result IV from scratch each time */
		325	if (expect_true (sv_result_cache))
		326	{
		327	sv_result = sv_result_cache; sv_result_cache = 0;
		328	SvIV_set (sv_result, req->result);
		329	}
		330	else
		331	{
		332	sv_result = newSViv (req->result);
		333	SvREADONLY_on (sv_result);
		334	}
		335
429	switch (req->type)	336	switch (req->type)
430	{	337	{
431	case REQ_READDIR:	338	case EIO_READDIR:
432	{	339	{
433	SV *rv = &PL_sv_undef;	340	SV *rv = &PL_sv_undef;
434		341
435	if (req->result >= 0)	342	if (req->result >= 0)
436	{	343	{
437	int i;	344	int i;
438	char *buf = req->ptr2;	345	char *names = (char *)req->ptr2;
		346	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	347	AV *av = newAV ();
440		348
441	av_extend (av, req->result - 1);	349	av_extend (av, req->result - 1);
442		350
443	for (i = 0; i < req->result; ++i)	351	for (i = 0; i < req->result; ++i)
444	{	352	{
445	SV *sv = newSVpv (buf, 0);	353	if (req->int1 & EIO_READDIR_DENTS)
		354	{
		355	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		356
		357	if (req->int1 & EIO_READDIR_CUSTOM2)
		358	{
		359	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		360	AV *avent = newAV ();
		361
		362	av_extend (avent, 2);
		363
		364	if (!sv_type [ent->type])
		365	{
		366	sv_type [ent->type] = newSViv (ent->type);
		367	SvREADONLY_on (sv_type [ent->type]);
		368	}
		369
		370	av_store (avent, 0, namesv);
		371	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		372	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		373
		374	av_store (av, i, newRV_noinc ((SV *)avent));
		375	}
		376	else
447	av_store (av, i, sv);	377	av_store (av, i, namesv);
		378
		379	++ent;
		380	}
		381	else
		382	{
		383	SV *name = newSVpv (names, 0);
		384	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	385	names += SvCUR (name) + 1;
		386	}
449	}	387	}
450		388
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	389	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	390	}
453		391
454	PUSHs (rv);	392	PUSHs (rv);
		393
		394	if (req->int1 & EIO_READDIR_CUSTOM1)
		395	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	396	}
456	break;	397	break;
457		398
458	case REQ_OPEN:	399	case EIO_OPEN:
459	{	400	{
460	/* convert fd to fh */	401	/* convert fd to fh */
461	SV *fh;	402	SV *fh = &PL_sv_undef;
462		403
463	PUSHs (sv_2mortal (newSViv (req->result)));	404	if (req->result >= 0)
464	PUTBACK;	405	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	406	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	407	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		408	char sym [64];
		409	int symlen;
		410
		411	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		412	gv_init (gv, aio_stash, sym, symlen, 0);
467		413
468	fh = POPs;	414	symlen = snprintf (
469	PUSHMARK (SP);	415	sym,
		416	sizeof (sym),
		417	"%s&=%d",
		418	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		419	(int)req->result
		420	);
		421
		422	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		423	fh = (SV *)gv;
		424	}
		425
470	XPUSHs (fh);	426	PUSHs (fh);
471	}	427	}
472	break;	428	break;
473		429
		430	case EIO_STATVFS:
		431	case EIO_FSTATVFS:
		432	{
		433	SV *rv = &PL_sv_undef;
		434
		435	if (req->result >= 0)
		436	{
		437	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		438	HV *hv = newHV ();
		439
		440	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		441
		442	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		443	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		444	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		445	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		446	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		447	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		448	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		449	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		450	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		451	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		452	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		453	}
		454
		455	PUSHs (rv);
		456	}
		457
		458	break;
		459
474	case REQ_GROUP:	460	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	461	req->int1 = 2; /* mark group as finished */
476		462
477	if (req->sv1)	463	if (req->sv1)
478	{	464	{
479	int i;	465	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	469	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	470	PUSHs (*av_fetch (av, i, 0));
485	}	471	}
486	break;	472	break;
487		473
488	case REQ_NOP:	474	case EIO_NOP:
489	case REQ_BUSY:	475	case EIO_BUSY:
490	break;	476	break;
491		477
492	case REQ_READLINK:	478	case EIO_READLINK:
493	if (req->result > 0)	479	if (req->result > 0)
494	{	480	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;	481	break;
500		482
501	case REQ_STAT:	483	case EIO_STAT:
502	case REQ_LSTAT:	484	case EIO_LSTAT:
503	case REQ_FSTAT:	485	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	486	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	487	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	488	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	489	PUSHs (sv_result);
508	break;	490	break;
509		491
510	case REQ_READ:	492	case EIO_READ:
		493	{
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	494	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	495	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));	496	SvPOK_only (req->sv2);
		497	SvSETMAGIC (req->sv2);
		498	PUSHs (sv_result);
		499	}
514	break;	500	break;
515		501
		502	case EIO_DUP2:
		503	if (req->result > 0)
		504	SvIV_set (sv_result, 0);
		505	/* FALLTHROUGH */
		506
516	default:	507	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	508	PUSHs (sv_result);
518	break;	509	break;
519	}	510	}
520		511
521	errno = req->errorno;	512	errno = req->errorno;
522		513
523	PUTBACK;	514	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	515	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	516	SPAGAIN;
		517
		518	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		519	SvREFCNT_dec (sv_result);
		520	else
		521	sv_result_cache = sv_result;
526		522
527	FREETMPS;	523	FREETMPS;
528	LEAVE;	524	LEAVE;
		525
		526	PUTBACK;
529	}	527	}
530		528
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);	529	return !!SvTRUE (ERRSV);
546	}	530	}
547		531
548	static void req_destroy (aio_req req)	532	static void req_destroy (aio_req req)
549	{	533	{
550	if (req->self)	534	if (req->self)
…		…
555		539
556	SvREFCNT_dec (req->sv1);	540	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	541	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	542	SvREFCNT_dec (req->callback);
559		543
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	544	Safefree (req);
564	}	545	}
565		546
566	static void req_cancel_subs (aio_req grp)	547	static void req_cancel_subs (aio_req grp)
567	{	548	{
568	aio_req sub;	549	aio_req sub;
569		550
570	if (grp->type != REQ_GROUP)	551	if (grp->type != EIO_GROUP)
571	return;	552	return;
572		553
573	SvREFCNT_dec (grp->sv2);	554	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	555	grp->sv2 = 0;
575		556
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	557	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	558	}
579		559
580	static void req_cancel (aio_req req)	560	static void
		561	create_respipe (void)
581	{	562	{
582	req->flags |= FLAG_CANCELLED;	563	if (s_epipe_renew (&respipe))
583		564	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	565	}
586		566
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 ()	567	static void poll_wait (void)
683	{	568	{
684	fd_set rfd;
685
686	while (nreqs)	569	while (eio_nreqs ())
687	{	570	{
688	int size;	571	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	572
		573	X_LOCK (reslock);
690	size = res_queue.size;	574	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	575	X_UNLOCK (reslock);
692		576
693	if (size)	577	if (size)
694	return;	578	return;
695		579
696	maybe_start_thread ();	580	etp_maybe_start_thread ();
697		581
698	FD_ZERO(&rfd);	582	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	583	}
703	}	584	}
704		585
705	static int poll_cb ()	586	static int poll_cb (void)
706	{	587	{
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 (;;)	588	for (;;)
720	{	589	{
721	for (;;)	590	int res = eio_poll ();
722	{
723	maybe_start_thread ();
724		591
725	LOCK (reslock);	592	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);	593	croak (0);
760	}
761		594
762	count++;	595	if (!max_outstanding || max_outstanding > eio_nreqs ())
763	}	596	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		597
782	poll_wait ();	598	poll_wait ();
783
784	++maxreqs;
785	}	599	}
786
787	unblock_sig ();
788	return count;
789	}	600	}
790		601
791	static void create_pipe ()	602	static void atfork_child (void)
792	{	603	{
793	if (pipe (respipe))	604	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	}	605	}
802		606
803	/*****************************************************************************/	607	/*****************************************************************************/
804	/* work around various missing functions */
805		608
806	#if !HAVE_PREADWRITE	609	#if !_POSIX_MAPPED_FILES
807	# define pread aio_pread	610	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
808	# define pwrite aio_pwrite	611	# 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	612	#endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981		613
982	if (res < 0	614	#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		615
993	res = 0;	616	static int
		617	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		618	{
		619	int old_errno = errno;
		620	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		621	errno = old_errno;
994		622
995	while (count)	623	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		624
1001	if (cnt <= 0)	625	SvREADONLY_off (sv);
1002	{	626	SvCUR_set (sv, 0);
1003	if (cnt && !res) res = -1;	627	SvLEN_set (sv, 0);
1004	break;	628	SvPVX (sv) = 0;
1005	}	629	SvOK_off (sv);
1006		630
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;	631	return 0;
1022	}	632	}
1023		633
1024	/* read a full directory */	634	static MGVTBL mmap_vtbl = {
1025	static void scandir_ (aio_req req, worker *self)	635	0, 0, 0, 0, mmap_free
1026	{	636	};
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		637
1086	/*****************************************************************************/	638	/*****************************************************************************/
1087		639
1088	static void *aio_proc (void *thr_arg)	640	static SV *
		641	get_cb (SV *cb_sv)
1089	{	642	{
1090	aio_req req;	643	SvGETMAGIC (cb_sv);
1091	struct timespec ts;	644	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	}	645	}
1314		646
1315	#define dREQ \	647	#define dREQ \
		648	SV *cb_cv; \
1316	aio_req req; \	649	aio_req req; \
1317	int req_pri = next_pri; \	650	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	651	next_pri = EIO_PRI_DEFAULT; \
1319	\	652	\
1320	if (SvOK (callback) && !SvROK (callback)) \	653	cb_cv = get_cb (callback); \
1321	croak ("callback must be undef or of reference type"); \
1322	\	654	\
1323	Newz (0, req, 1, aio_cb); \	655	Newz (0, req, 1, eio_req); \
1324	if (!req) \	656	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	657	croak ("out of memory during eio_req allocation"); \
1326	\	658	\
1327	req->callback = newSVsv (callback); \	659	req->callback = SvREFCNT_inc (cb_cv); \
1328	req->pri = req_pri	660	req->pri = req_pri
1329		661
1330	#define REQ_SEND \	662	#define REQ_SEND \
		663	PUTBACK; \
1331	req_send (req); \	664	req_submit (req); \
		665	SPAGAIN; \
1332	\	666	\
1333	if (GIMME_V != G_VOID) \	667	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	668	XPUSHs (req_sv (req, aio_req_stash));
1335		669
1336	MODULE = IO::AIO PACKAGE = IO::AIO	670	MODULE = IO::AIO PACKAGE = IO::AIO
1337		671
1338	PROTOTYPES: ENABLE	672	PROTOTYPES: ENABLE
1339		673
1340	BOOT:	674	BOOT:
1341	{	675	{
		676	static const struct {
		677	const char *name;
		678	IV iv;
		679	} *civ, const_iv[] = {
		680	# define const_niv(name, value) { # name, (IV) value },
		681	# define const_iv(name) { # name, (IV) name },
		682	# define const_eio(name) { # name, (IV) EIO_ ## name },
		683	const_iv (EXDEV)
		684	const_iv (ENOSYS)
		685	const_iv (O_RDONLY)
		686	const_iv (O_WRONLY)
		687	const_iv (O_RDWR)
		688	const_iv (O_CREAT)
		689	const_iv (O_TRUNC)
		690	const_iv (O_EXCL)
		691	const_iv (O_APPEND)
		692	#ifndef _WIN32
		693	const_iv (S_IFIFO)
		694	#endif
		695	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		696	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		697	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		698	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		699	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		700	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		701
		702	const_iv (ST_RDONLY)
		703	const_iv (ST_NOSUID)
		704	const_iv (ST_NODEV)
		705	const_iv (ST_NOEXEC)
		706	const_iv (ST_SYNCHRONOUS)
		707	const_iv (ST_MANDLOCK)
		708	const_iv (ST_WRITE)
		709	const_iv (ST_APPEND)
		710	const_iv (ST_IMMUTABLE)
		711	const_iv (ST_NOATIME)
		712	const_iv (ST_NODIRATIME)
		713	const_iv (ST_RELATIME)
		714
		715	const_iv (PROT_EXEC)
		716	const_iv (PROT_NONE)
		717	const_iv (PROT_READ)
		718	const_iv (PROT_WRITE)
		719
		720	/*const_iv (MAP_FIXED)*/
		721	const_iv (MAP_PRIVATE)
		722	const_iv (MAP_SHARED)
		723	const_iv (MAP_ANONYMOUS)
		724
		725	/* linuxish */
		726	const_iv (MAP_HUGETLB)
		727	const_iv (MAP_LOCKED)
		728	const_iv (MAP_NORESERVE)
		729	const_iv (MAP_POPULATE)
		730	const_iv (MAP_NONBLOCK)
		731
		732	const_iv (MCL_FUTURE)
		733	const_iv (MCL_CURRENT)
		734
		735	const_eio (MS_ASYNC)
		736	const_eio (MS_INVALIDATE)
		737	const_eio (MS_SYNC)
		738
		739	const_eio (MT_MODIFY)
		740
		741	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		742	const_eio (SYNC_FILE_RANGE_WRITE)
		743	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		744
		745	const_eio (READDIR_DENTS)
		746	const_eio (READDIR_DIRS_FIRST)
		747	const_eio (READDIR_STAT_ORDER)
		748	const_eio (READDIR_FOUND_UNKNOWN)
		749
		750	const_eio (DT_UNKNOWN)
		751	const_eio (DT_FIFO)
		752	const_eio (DT_CHR)
		753	const_eio (DT_DIR)
		754	const_eio (DT_BLK)
		755	const_eio (DT_REG)
		756	const_eio (DT_LNK)
		757	const_eio (DT_SOCK)
		758	const_eio (DT_WHT)
		759	};
		760
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	761	aio_stash = gv_stashpv ("IO::AIO" , 1);
		762	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		763	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1343		764
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	765	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	766	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		767
		768	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		769
1352	create_pipe ();	770	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	771
		772	if (eio_init (want_poll, done_poll) < 0)
		773	croak ("IO::AIO: unable to initialise eio library");
		774
		775	/* atfork child called in fifo order, so before eio's handler */
		776	X_THREAD_ATFORK (0, 0, atfork_child);
1354	}	777	}
1355		778
1356	void	779	void
1357	max_poll_reqs (int nreqs)	780	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	781	PROTOTYPE: $
1359	CODE:	782	CODE:
1360	max_poll_reqs = nreqs;	783	eio_set_max_poll_reqs (nreqs);
1361		784
1362	void	785	void
1363	max_poll_time (double nseconds)	786	max_poll_time (double nseconds)
1364	PROTOTYPE: $	787	PROTOTYPE: $
1365	CODE:	788	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	789	eio_set_max_poll_time (nseconds);
1367		790
1368	void	791	void
1369	min_parallel (int nthreads)	792	min_parallel (int nthreads)
1370	PROTOTYPE: $	793	PROTOTYPE: $
		794	CODE:
		795	eio_set_min_parallel (nthreads);
1371		796
1372	void	797	void
1373	max_parallel (int nthreads)	798	max_parallel (int nthreads)
1374	PROTOTYPE: $	799	PROTOTYPE: $
		800	CODE:
		801	eio_set_max_parallel (nthreads);
1375		802
1376	void	803	void
1377	max_idle (int nthreads)	804	max_idle (int nthreads)
1378	PROTOTYPE: $	805	PROTOTYPE: $
1379	CODE:	806	CODE:
1380	set_max_idle (nthreads);	807	eio_set_max_idle (nthreads);
1381		808
1382	int	809	void
1383	max_outstanding (int maxreqs)	810	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	811	PROTOTYPE: $
1385	CODE:	812	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	813	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		814
1391	void	815	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	816	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1394	PPCODE:	818	PPCODE:
1395	{	819	{
1396	dREQ;	820	dREQ;
1397		821
1398	req->type = REQ_OPEN;	822	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	823	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	824	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	825	req->int1 = flags;
1402	req->mode = mode;	826	req->int2 = mode;
1403		827
1404	REQ_SEND;	828	REQ_SEND;
		829	}
		830
		831	void
		832	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		833	PROTOTYPE: $;$
		834	ALIAS:
		835	aio_fsync = EIO_FSYNC
		836	aio_fdatasync = EIO_FDATASYNC
		837	PPCODE:
		838	{
		839	int fd = s_fileno_croak (fh, 0);
		840	dREQ;
		841
		842	req->type = ix;
		843	req->sv1 = newSVsv (fh);
		844	req->int1 = fd;
		845
		846	REQ_SEND (req);
		847	}
		848
		849	void
		850	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		851	PROTOTYPE: $$$$;$
		852	PPCODE:
		853	{
		854	int fd = s_fileno_croak (fh, 0);
		855	dREQ;
		856
		857	req->type = EIO_SYNC_FILE_RANGE;
		858	req->sv1 = newSVsv (fh);
		859	req->int1 = fd;
		860	req->offs = offset;
		861	req->size = nbytes;
		862	req->int2 = flags;
		863
		864	REQ_SEND (req);
1405	}	865	}
1406		866
1407	void	867	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	868	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	869	PROTOTYPE: $;$
		870	PPCODE:
		871	{
		872	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		873	int fd = s_fileno_croak (fh, 0);
		874	dREQ;
		875
		876	if (close_pipe < 0)
		877	{
		878	int pipefd [2];
		879
		880	if (pipe (pipefd) < 0
		881	|| close (pipefd [1]) < 0
		882	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		883	abort (); /*D*/
		884
		885	close_pipe = pipefd [0];
		886	}
		887
		888	req->type = EIO_DUP2;
		889	req->int1 = close_pipe;
		890	req->sv2 = newSVsv (fh);
		891	req->int2 = fd;
		892
		893	REQ_SEND (req);
		894	}
		895
		896	void
		897	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1410	ALIAS:	898	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC
1414	PPCODE:
1415	{
1416	dREQ;
1417
1418	req->type = ix;
1419	req->sv1 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1421
1422	REQ_SEND (req);
1423	}
1424
1425	void
1426	aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:
1428	aio_read = REQ_READ	899	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	900	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	901	PROTOTYPE: $$$$$;$
1431	PPCODE:	902	PPCODE:
1432	{	903	{
1433	STRLEN svlen;	904	STRLEN svlen;
		905	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	906	char *svptr = SvPVbyte (data, svlen);
1435		907	UV len = SvUV (length);
1436	SvUPGRADE (data, SVt_PV);
1437	SvPOK_on (data);
1438		908
1439	if (dataoffset < 0)	909	if (dataoffset < 0)
1440	dataoffset += svlen;	910	dataoffset += svlen;
1441		911
1442	if (dataoffset < 0 || dataoffset > svlen)	912	if (dataoffset < 0 || dataoffset > svlen)
1443	croak ("data offset outside of string");	913	croak ("dataoffset outside of data scalar");
1444		914
1445	if (ix == REQ_WRITE)	915	if (ix == EIO_WRITE)
1446	{	916	{
1447	/* write: check length and adjust. */	917	/* write: check length and adjust. */
1448	if (length < 0 || length + dataoffset > svlen)	918	if (!SvOK (length) || len + dataoffset > svlen)
1449	length = svlen - dataoffset;	919	len = svlen - dataoffset;
1450	}	920	}
1451	else	921	else
1452	{	922	{
1453	/* read: grow scalar as necessary */	923	/* read: check type and grow scalar as necessary */
		924	SvUPGRADE (data, SVt_PV);
1454	svptr = SvGROW (data, length + dataoffset + 1);	925	svptr = SvGROW (data, len + dataoffset + 1);
1455	}	926	}
1456
1457	if (length < 0)
1458	croak ("length must not be negative");
1459		927
1460	{	928	{
1461	dREQ;	929	dREQ;
1462		930
1463	req->type = ix;	931	req->type = ix;
1464	req->sv1 = newSVsv (fh);	932	req->sv1 = newSVsv (fh);
1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	933	req->int1 = fd;
1466	: IoOFP (sv_2io (fh)));
1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	934	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1468	req->size = length;	935	req->size = len;
1469	req->sv2 = SvREFCNT_inc (data);	936	req->sv2 = SvREFCNT_inc (data);
1470	req->ptr1 = (char *)svptr + dataoffset;	937	req->ptr2 = (char *)svptr + dataoffset;
1471	req->stroffset = dataoffset;	938	req->stroffset = dataoffset;
1472		939
1473	if (!SvREADONLY (data))	940	if (!SvREADONLY (data))
1474	{	941	{
1475	SvREADONLY_on (data);	942	SvREADONLY_on (data);
…		…
1486	PPCODE:	953	PPCODE:
1487	{	954	{
1488	SV *data;	955	SV *data;
1489	dREQ;	956	dREQ;
1490		957
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	958	req->type = EIO_READLINK;
1495	req->sv1 = newSVsv (path);	959	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->sv1);	960	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->sv2 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		961
1500	REQ_SEND;	962	REQ_SEND;
1501	}	963	}
1502		964
1503	void	965	void
1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	966	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $$$$;$	967	PROTOTYPE: $$$$;$
1506	PPCODE:	968	PPCODE:
1507	{	969	{
		970	int ifd = s_fileno_croak (in_fh , 0);
		971	int ofd = s_fileno_croak (out_fh, 1);
1508	dREQ;	972	dREQ;
1509		973
1510	req->type = REQ_SENDFILE;	974	req->type = EIO_SENDFILE;
1511	req->sv1 = newSVsv (out_fh);	975	req->sv1 = newSVsv (out_fh);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	976	req->int1 = ofd;
1513	req->sv2 = newSVsv (in_fh);	977	req->sv2 = newSVsv (in_fh);
1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	978	req->int2 = ifd;
1515	req->offs = SvVAL64 (in_offset);	979	req->offs = in_offset;
1516	req->size = length;	980	req->size = length;
1517		981
1518	REQ_SEND;	982	REQ_SEND;
1519	}	983	}
1520		984
1521	void	985	void
1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	986	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1523	PROTOTYPE: $$$;$	987	PROTOTYPE: $$$;$
1524	PPCODE:	988	PPCODE:
1525	{	989	{
		990	int fd = s_fileno_croak (fh, 0);
1526	dREQ;	991	dREQ;
1527		992
1528	req->type = REQ_READAHEAD;	993	req->type = EIO_READAHEAD;
1529	req->sv1 = newSVsv (fh);	994	req->sv1 = newSVsv (fh);
1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	995	req->int1 = fd;
1531	req->offs = SvVAL64 (offset);	996	req->offs = offset;
1532	req->size = length;	997	req->size = length;
1533		998
1534	REQ_SEND;	999	REQ_SEND;
1535	}	1000	}
1536		1001
1537	void	1002	void
1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1003	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1539	ALIAS:	1004	ALIAS:
1540	aio_stat = REQ_STAT	1005	aio_stat = EIO_STAT
1541	aio_lstat = REQ_LSTAT	1006	aio_lstat = EIO_LSTAT
		1007	aio_statvfs = EIO_STATVFS
1542	PPCODE:	1008	PPCODE:
1543	{	1009	{
1544	dREQ;	1010	dREQ;
1545		1011
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);	1012	req->sv1 = newSVsv (fh_or_path);
1555		1013
1556	if (SvPOK (fh_or_path))	1014	if (SvPOK (req->sv1))
1557	{	1015	{
1558	req->type = ix;	1016	req->type = ix;
1559	req->ptr1 = SvPVbyte_nolen (req->sv1);	1017	req->ptr1 = SvPVbyte_nolen (req->sv1);
1560	}	1018	}
1561	else	1019	else
1562	{	1020	{
1563	req->type = REQ_FSTAT;	1021	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1022	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1565	}	1023	}
1566		1024
1567	REQ_SEND;	1025	REQ_SEND;
1568	}	1026	}
…		…
1575		1033
1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1034	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1035	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1578	req->sv1 = newSVsv (fh_or_path);	1036	req->sv1 = newSVsv (fh_or_path);
1579		1037
1580	if (SvPOK (fh_or_path))	1038	if (SvPOK (req->sv1))
1581	{	1039	{
1582	req->type = REQ_UTIME;	1040	req->type = EIO_UTIME;
1583	req->ptr1 = SvPVbyte_nolen (req->sv1);	1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
1584	}	1042	}
1585	else	1043	else
1586	{	1044	{
1587	req->type = REQ_FUTIME;	1045	req->type = EIO_FUTIME;
1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1589	}	1047	}
1590		1048
1591	REQ_SEND;	1049	REQ_SEND;
1592	}	1050	}
1593		1051
1594	void	1052	void
1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1053	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1596	PPCODE:	1054	PPCODE:
1597	{	1055	{
1598	dREQ;	1056	dREQ;
1599		1057
1600	req->mode = mode;
1601	req->sv1 = newSVsv (fh_or_path);	1058	req->sv1 = newSVsv (fh_or_path);
		1059	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1602		1060
1603	if (SvPOK (fh_or_path))	1061	if (SvPOK (req->sv1))
1604	{	1062	{
1605	req->type = REQ_CHMOD;	1063	req->type = EIO_TRUNCATE;
1606	req->ptr1 = SvPVbyte_nolen (req->sv1);	1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
1607	}	1065	}
1608	else	1066	else
1609	{	1067	{
1610	req->type = REQ_FCHMOD;	1068	req->type = EIO_FTRUNCATE;
1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1612	}	1070	}
1613		1071
1614	REQ_SEND;	1072	REQ_SEND;
1615	}	1073	}
1616		1074
1617	void	1075	void
1618	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1076	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1077	ALIAS:
		1078	aio_chmod = EIO_CHMOD
		1079	aio_mkdir = EIO_MKDIR
1619	PPCODE:	1080	PPCODE:
1620	{	1081	{
1621	dREQ;	1082	dREQ;
1622		1083
1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1084	req->int2 = mode;
1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1625	req->sv1 = newSVsv (fh_or_path);	1085	req->sv1 = newSVsv (fh_or_path);
1626		1086
1627	if (SvPOK (fh_or_path))	1087	if (SvPOK (req->sv1))
1628	{	1088	{
1629	req->type = REQ_CHOWN;	1089	req->type = ix;
1630	req->ptr1 = SvPVbyte_nolen (req->sv1);	1090	req->ptr1 = SvPVbyte_nolen (req->sv1);
1631	}	1091	}
1632	else	1092	else
1633	{	1093	{
1634	req->type = REQ_FCHOWN;	1094	req->type = EIO_FCHMOD;
1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1095	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1636	}	1096	}
1637		1097
1638	REQ_SEND;	1098	REQ_SEND;
1639	}	1099	}
1640		1100
1641	void	1101	void
		1102	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1103	PPCODE:
		1104	{
		1105	dREQ;
		1106
		1107	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1108	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1109	req->sv1 = newSVsv (fh_or_path);
		1110
		1111	if (SvPOK (req->sv1))
		1112	{
		1113	req->type = EIO_CHOWN;
		1114	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1115	}
		1116	else
		1117	{
		1118	req->type = EIO_FCHOWN;
		1119	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1120	}
		1121
		1122	REQ_SEND;
		1123	}
		1124
		1125	void
		1126	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	dREQ;
		1130
		1131	req->type = EIO_READDIR;
		1132	req->sv1 = newSVsv (pathname);
		1133	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1134	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1135
		1136	if (flags & EIO_READDIR_DENTS)
		1137	req->int1 |= EIO_READDIR_CUSTOM2;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1143	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1643	ALIAS:	1144	ALIAS:
1644	aio_unlink = REQ_UNLINK	1145	aio_unlink = EIO_UNLINK
1645	aio_rmdir = REQ_RMDIR	1146	aio_rmdir = EIO_RMDIR
1646	aio_readdir = REQ_READDIR	1147	aio_readdir = EIO_READDIR
1647	PPCODE:	1148	PPCODE:
1648	{	1149	{
1649	dREQ;	1150	dREQ;
1650		1151
1651	req->type = ix;	1152	req->type = ix;
…		…
1654		1155
1655	REQ_SEND;	1156	REQ_SEND;
1656	}	1157	}
1657		1158
1658	void	1159	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)	1160	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1674	ALIAS:	1161	ALIAS:
1675	aio_link = REQ_LINK	1162	aio_link = EIO_LINK
1676	aio_symlink = REQ_SYMLINK	1163	aio_symlink = EIO_SYMLINK
1677	aio_rename = REQ_RENAME	1164	aio_rename = EIO_RENAME
1678	PPCODE:	1165	PPCODE:
1679	{	1166	{
1680	dREQ;	1167	dREQ;
1681		1168
1682	req->type = ix;	1169	req->type = ix;
1683	req->sv2 = newSVsv (oldpath);	1170	req->sv1 = newSVsv (oldpath);
		1171	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1172	req->sv2 = newSVsv (newpath);
1684	req->ptr2 = SvPVbyte_nolen (req->sv2);	1173	req->ptr2 = SvPVbyte_nolen (req->sv2);
1685	req->sv1 = newSVsv (newpath);
1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1687		1174
1688	REQ_SEND;	1175	REQ_SEND;
1689	}	1176	}
1690		1177
1691	void	1178	void
1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1179	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1693	PPCODE:	1180	PPCODE:
1694	{	1181	{
1695	dREQ;	1182	dREQ;
1696		1183
1697	req->type = REQ_MKNOD;	1184	req->type = EIO_MKNOD;
1698	req->sv1 = newSVsv (pathname);	1185	req->sv1 = newSVsv (pathname);
1699	req->ptr1 = SvPVbyte_nolen (req->sv1);	1186	req->ptr1 = SvPVbyte_nolen (req->sv1);
1700	req->mode = (mode_t)mode;	1187	req->int2 = (mode_t)mode;
1701	req->offs = dev;	1188	req->offs = dev;
1702		1189
1703	REQ_SEND;	1190	REQ_SEND;
1704	}	1191	}
1705		1192
1706	void	1193	void
		1194	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1195	ALIAS:
		1196	aio_mtouch = EIO_MTOUCH
		1197	aio_msync = EIO_MSYNC
		1198	PROTOTYPE: $$$$;$
		1199	PPCODE:
		1200	{
		1201	STRLEN svlen;
		1202	UV len = SvUV (length);
		1203	char *svptr = SvPVbyte (data, svlen);
		1204
		1205	if (offset < 0)
		1206	offset += svlen;
		1207
		1208	if (offset < 0 || offset > svlen)
		1209	croak ("offset outside of scalar");
		1210
		1211	if (!SvOK (length) || len + offset > svlen)
		1212	len = svlen - offset;
		1213
		1214	{
		1215	dREQ;
		1216
		1217	req->type = ix;
		1218	req->size = len;
		1219	req->sv2 = SvREFCNT_inc (data);
		1220	req->ptr2 = (char *)svptr + offset;
		1221	req->int1 = flags;
		1222
		1223	REQ_SEND;
		1224	}
		1225	}
		1226
		1227	void
1707	aio_busy (double delay, SV *callback=&PL_sv_undef)	1228	aio_busy (double delay, SV *callback=&PL_sv_undef)
1708	PPCODE:	1229	PPCODE:
1709	{	1230	{
1710	dREQ;	1231	dREQ;
1711		1232
1712	req->type = REQ_BUSY;	1233	req->type = EIO_BUSY;
1713	req->nv1 = delay < 0. ? 0. : delay;	1234	req->nv1 = delay < 0. ? 0. : delay;
1714		1235
1715	REQ_SEND;	1236	REQ_SEND;
1716	}	1237	}
1717		1238
…		…
1720	PROTOTYPE: ;$	1241	PROTOTYPE: ;$
1721	PPCODE:	1242	PPCODE:
1722	{	1243	{
1723	dREQ;	1244	dREQ;
1724		1245
1725	req->type = REQ_GROUP;	1246	req->type = EIO_GROUP;
1726		1247
1727	req_send (req);	1248	req_submit (req);
1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1249	XPUSHs (req_sv (req, aio_grp_stash));
1729	}	1250	}
1730		1251
1731	void	1252	void
1732	aio_nop (SV *callback=&PL_sv_undef)	1253	aio_nop (SV *callback=&PL_sv_undef)
		1254	ALIAS:
		1255	aio_nop = EIO_NOP
		1256	aio_sync = EIO_SYNC
1733	PPCODE:	1257	PPCODE:
1734	{	1258	{
1735	dREQ;	1259	dREQ;
1736		1260
1737	req->type = REQ_NOP;	1261	req->type = ix;
1738		1262
1739	REQ_SEND;	1263	REQ_SEND;
1740	}	1264	}
1741		1265
1742	int	1266	int
1743	aioreq_pri (int pri = 0)	1267	aioreq_pri (int pri = 0)
1744	PROTOTYPE: ;$	1268	PROTOTYPE: ;$
1745	CODE:	1269	CODE:
1746	RETVAL = next_pri - PRI_BIAS;	1270	RETVAL = next_pri;
1747	if (items > 0)	1271	if (items > 0)
1748	{	1272	{
1749	if (pri < PRI_MIN) pri = PRI_MIN;	1273	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1750	if (pri > PRI_MAX) pri = PRI_MAX;	1274	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1751	next_pri = pri + PRI_BIAS;	1275	next_pri = pri;
1752	}	1276	}
1753	OUTPUT:	1277	OUTPUT:
1754	RETVAL	1278	RETVAL
1755		1279
1756	void	1280	void
1757	aioreq_nice (int nice = 0)	1281	aioreq_nice (int nice = 0)
1758	CODE:	1282	CODE:
1759	nice = next_pri - nice;	1283	nice = next_pri - nice;
1760	if (nice < PRI_MIN) nice = PRI_MIN;	1284	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1761	if (nice > PRI_MAX) nice = PRI_MAX;	1285	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1762	next_pri = nice + PRI_BIAS;	1286	next_pri = nice;
1763		1287
1764	void	1288	void
1765	flush ()	1289	flush ()
1766	PROTOTYPE:	1290	PROTOTYPE:
1767	CODE:	1291	CODE:
1768	while (nreqs)	1292	while (eio_nreqs ())
1769	{	1293	{
1770	poll_wait ();	1294	poll_wait ();
1771	poll_cb ();	1295	poll_cb ();
1772	}	1296	}
1773		1297
…		…
1782		1306
1783	int	1307	int
1784	poll_fileno()	1308	poll_fileno()
1785	PROTOTYPE:	1309	PROTOTYPE:
1786	CODE:	1310	CODE:
1787	RETVAL = respipe [0];	1311	RETVAL = s_epipe_fd (&respipe);
1788	OUTPUT:	1312	OUTPUT:
1789	RETVAL	1313	RETVAL
1790		1314
1791	int	1315	int
1792	poll_cb(...)	1316	poll_cb(...)
…		…
1800	poll_wait()	1324	poll_wait()
1801	PROTOTYPE:	1325	PROTOTYPE:
1802	CODE:	1326	CODE:
1803	poll_wait ();	1327	poll_wait ();
1804		1328
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	1329	int
1843	nreqs()	1330	nreqs()
1844	PROTOTYPE:	1331	PROTOTYPE:
1845	CODE:	1332	CODE:
1846	RETVAL = nreqs;	1333	RETVAL = eio_nreqs ();
1847	OUTPUT:	1334	OUTPUT:
1848	RETVAL	1335	RETVAL
1849		1336
1850	int	1337	int
1851	nready()	1338	nready()
1852	PROTOTYPE:	1339	PROTOTYPE:
1853	CODE:	1340	CODE:
1854	RETVAL = get_nready ();	1341	RETVAL = eio_nready ();
1855	OUTPUT:	1342	OUTPUT:
1856	RETVAL	1343	RETVAL
1857		1344
1858	int	1345	int
1859	npending()	1346	npending()
1860	PROTOTYPE:	1347	PROTOTYPE:
1861	CODE:	1348	CODE:
1862	RETVAL = get_npending ();	1349	RETVAL = eio_npending ();
1863	OUTPUT:	1350	OUTPUT:
1864	RETVAL	1351	RETVAL
1865		1352
1866	int	1353	int
1867	nthreads()	1354	nthreads()
1868	PROTOTYPE:	1355	PROTOTYPE:
1869	CODE:	1356	CODE:
1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1357	RETVAL = eio_nthreads ();
1871	RETVAL = started;
1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1873	OUTPUT:	1358	OUTPUT:
1874	RETVAL	1359	RETVAL
1875		1360
		1361	int
		1362	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1363	PROTOTYPE: $$$$
		1364	CODE:
		1365	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1366	RETVAL = posix_fadvise (fh, offset, length, advice);
		1367	#else
		1368	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1369	#endif
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	ssize_t
		1374	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1375	PROTOTYPE: $$$$
		1376	CODE:
		1377	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1378	OUTPUT:
		1379	RETVAL
		1380
		1381	void
		1382	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1383	PROTOTYPE: $$$$$;$
		1384	PPCODE:
		1385	sv_unmagic (scalar, MMAP_MAGIC);
		1386	{
		1387	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1388	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1389	if (addr == (void *)-1)
		1390	XSRETURN_NO;
		1391
		1392	/* we store the length in mg_obj, as namlen is I32 :/ */
		1393	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1394	->mg_obj = (SV *)length;
		1395
		1396	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1397	if (!(prot & PROT_WRITE))
		1398	SvREADONLY_on (scalar);
		1399
		1400	SvPVX (scalar) = (char *)addr;
		1401	SvCUR_set (scalar, length);
		1402	SvLEN_set (scalar, 0);
		1403	SvPOK_only (scalar);
		1404
		1405	XSRETURN_YES;
		1406	}
		1407
		1408	void
		1409	munmap (SV *scalar)
		1410	PROTOTYPE: $
		1411	CODE:
		1412	sv_unmagic (scalar, MMAP_MAGIC);
		1413
		1414	int
		1415	mlockall (int flags)
		1416	PROTOTYPE: $
		1417	CODE:
		1418	#if _POSIX_MEMLOCK
		1419	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1420	extern int mallopt (int, int);
		1421	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1422	#endif
		1423	mlockall (flags);
		1424	#else
		1425	RETVAL = -1;
		1426	errno = ENOSYS;
		1427	#endif
		1428	OUTPUT:
		1429	RETVAL
		1430
		1431	int
		1432	munlockall ()
		1433	PROTOTYPE:
		1434	CODE:
		1435	#if _POSIX_MEMLOCK
		1436	munlockall ();
		1437	#else
		1438	RETVAL = -1;
		1439	errno = ENOSYS;
		1440	#endif
		1441	OUTPUT:
		1442	RETVAL
		1443
		1444	void _on_next_submit (SV *cb)
		1445	CODE:
		1446	SvREFCNT_dec (on_next_submit);
		1447	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1448
1876	PROTOTYPES: DISABLE	1449	PROTOTYPES: DISABLE
1877		1450
1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1879		1452
1880	void	1453	void
1881	cancel (aio_req_ornot req)	1454	cancel (aio_req_ornot req)
1882	CODE:	1455	CODE:
1883	req_cancel (req);	1456	eio_cancel (req);
1884		1457
1885	void	1458	void
1886	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1887	CODE:	1460	PPCODE:
		1461	{
		1462	if (GIMME_V != G_VOID)
		1463	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1464
		1465	if (items > 1)
		1466	{
		1467	SV *cb_cv =get_cb (callback);
		1468
1888	SvREFCNT_dec (req->callback);	1469	SvREFCNT_dec (req->callback);
1889	req->callback = newSVsv (callback);	1470	req->callback = SvREFCNT_inc (cb_cv);
		1471	}
		1472	}
1890		1473
1891	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1474	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1892		1475
1893	void	1476	void
1894	add (aio_req grp, ...)	1477	add (aio_req grp, ...)
1895	PPCODE:	1478	PPCODE:
1896	{	1479	{
1897	int i;	1480	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		1481
1903	if (grp->int1 == 2)	1482	if (grp->int1 == 2)
1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1905		1484
1906	for (i = 1; i < items; ++i )	1485	for (i = 1; i < items; ++i )
1907	{	1486	{
		1487	aio_req req;
		1488
1908	if (GIMME_V != G_VOID)	1489	if (GIMME_V != G_VOID)
1909	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1490	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1910		1491
1911	req = SvAIO_REQ (ST (i));	1492	req = SvAIO_REQ (ST (i));
1912		1493
1913	if (req)	1494	if (req)
1914	{	1495	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	}	1496	}
1927	}	1497	}
1928		1498
1929	void	1499	void
1930	cancel_subs (aio_req_ornot req)	1500	cancel_subs (aio_req_ornot req)
…		…
1939	AV *av;	1509	AV *av;
1940		1510
1941	grp->errorno = errno;	1511	grp->errorno = errno;
1942		1512
1943	av = newAV ();	1513	av = newAV ();
		1514	av_extend (av, items - 1);
1944		1515
1945	for (i = 1; i < items; ++i )	1516	for (i = 1; i < items; ++i )
1946	av_push (av, newSVsv (ST (i)));	1517	av_push (av, newSVsv (ST (i)));
1947		1518
1948	SvREFCNT_dec (grp->sv1);	1519	SvREFCNT_dec (grp->sv1);
…		…
1955	grp->errorno = errorno;	1526	grp->errorno = errorno;
1956		1527
1957	void	1528	void
1958	limit (aio_req grp, int limit)	1529	limit (aio_req grp, int limit)
1959	CODE:	1530	CODE:
1960	grp->int2 = limit;	1531	eio_grp_limit (grp, limit);
1961	aio_grp_feed (grp);
1962		1532
1963	void	1533	void
1964	feed (aio_req grp, SV *callback=&PL_sv_undef)	1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
1965	CODE:	1535	CODE:
1966	{	1536	{
1967	SvREFCNT_dec (grp->sv2);	1537	SvREFCNT_dec (grp->sv2);
1968	grp->sv2 = newSVsv (callback);	1538	grp->sv2 = newSVsv (callback);
		1539	grp->feed = aio_grp_feed;
1969		1540
1970	if (grp->int2 <= 0)	1541	if (grp->int2 <= 0)
1971	grp->int2 = 2;	1542	grp->int2 = 2;
1972		1543
1973	aio_grp_feed (grp);	1544	eio_grp_limit (grp, grp->int2);
1974	}	1545	}
1975		1546

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