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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	#if !_POSIX_MAPPED_FILES
		26	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		27	# define munmap(addr,length) (errno = ENOSYS, -1)
		28	#endif
		29
		30	/* perl namespace pollution */
		31	#undef VERSION
		32
18	#ifdef _WIN32	33	#ifdef _WIN32
19		34
20	# define SIGIO 0	35	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	36	# undef malloc
23	#undef free	37	# undef free
24		38
25	// perl overrides all those nice win32 functions	39	// perl overrides all those nice win32 functions
26	# undef open	40	# undef open
27	# undef read	41	# undef read
28	# undef write	42	# undef write
		43	# undef send
		44	# undef recv
29	# undef stat	45	# undef stat
30	# undef fstat	46	# undef fstat
31	# define lstat stat	47	# define lstat stat
32	# undef truncate	48	# undef truncate
33	# undef ftruncate	49	# undef ftruncate
…		…
52	# define closedir(fd) (errno = ENOSYS, -1)	68	# define closedir(fd) (errno = ENOSYS, -1)
53	# define mkdir(a,b) mkdir (a)	69	# define mkdir(a,b) mkdir (a)
54		70
55	#else	71	#else
56		72
57	# include "autoconf/config.h"
58	# include <sys/time.h>	73	# include <sys/time.h>
59	# include <sys/select.h>	74	# include <sys/select.h>
60	# include <unistd.h>	75	# include <unistd.h>
61	# include <utime.h>	76	# include <utime.h>
62	# include <signal.h>	77	# include <signal.h>
63	typedef struct dirent X_DIRENT;	78	# define EIO_STRUCT_DIRENT struct dirent
64		79
65	#endif
66
67	#if HAVE_SENDFILE
68	# if __linux
69	# include <sys/sendfile.h>
70	# elif __freebsd
71	# include <sys/socket.h>
72	# include <sys/uio.h>
73	# elif __hpux
74	# include <sys/socket.h>
75	# elif __solaris /* not yet */
76	# include <sys/sendfile.h>
77	# else
78	# error sendfile support requested but not available
79	# endif	80	#endif
80	#endif
81		81
82	/* number of seconds after which idle threads exit */	82	/* perl stupidly overrides readdir and maybe others */
83	#define IDLE_TIMEOUT 10	83	/* with thread-unsafe versions, imagine that :( */
		84	#undef readdir
		85	#undef opendir
		86	#undef closedir
84		87
85	/* used for struct dirent, AIX doesn't provide it */	88	#define EIO_STRUCT_STAT Stat_t
86	#ifndef NAME_MAX
87	# define NAME_MAX 4096
88	#endif
89
90	/* buffer size for various temporary buffers */
91	#define AIO_BUFSIZE 65536
92		89
93	/* use NV for 32 bit perls as it allows larger offsets */	90	/* use NV for 32 bit perls as it allows larger offsets */
94	#if IVSIZE >= 8	91	#if IVSIZE >= 8
		92	# define VAL64 IV
95	# define SvVAL64 SvIV	93	# define SvVAL64 SvIV
		94	# define newSVval64 newSViv
96	#else	95	#else
		96	# define VAL64 NV
97	# define SvVAL64 SvNV	97	# define SvVAL64 SvNV
		98	# define newSVval64 newSVnv
98	#endif	99	#endif
99		100
100	#define dBUF \	101	/*****************************************************************************/
101	char *aio_buf; \	102
102	X_LOCK (wrklock); \	103	#if __GNUC__ >= 3
103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	104	# define expect(expr,value) __builtin_expect ((expr),(value))
104	X_UNLOCK (wrklock); \	105	#else
105	if (!aio_buf) \	106	# define expect(expr,value) (expr)
106	return -1;	107	#endif
		108
		109	#define expect_false(expr) expect ((expr) != 0, 0)
		110	#define expect_true(expr) expect ((expr) != 0, 1)
		111
		112	/*****************************************************************************/
107		113
108	typedef SV SV8; /* byte-sv, used for argument-checking */	114	typedef SV SV8; /* byte-sv, used for argument-checking */
		115	typedef int aio_rfd; /* read file desriptor */
		116	typedef int aio_wfd; /* write file descriptor */
		117
		118	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		119
		120	#define EIO_REQ_MEMBERS \
		121	SV *callback; \
		122	SV *sv1, *sv2; \
		123	STRLEN stroffset; \
		124	SV *self;
		125
		126	#define EIO_NO_WRAPPERS 1
		127
		128	#include "libeio/eio.h"
		129
		130	#ifndef POSIX_FADV_NORMAL
		131	# define POSIX_FADV_NORMAL 0
		132	# define NO_FADVISE 1
		133	#endif
		134	#ifndef POSIX_FADV_SEQUENTIAL
		135	# define POSIX_FADV_SEQUENTIAL 0
		136	#endif
		137	#ifndef POSIX_FADV_RANDOM
		138	# define POSIX_FADV_RANDOM 0
		139	#endif
		140	#ifndef POSIX_FADV_NOREUSE
		141	# define POSIX_FADV_NOREUSE 0
		142	#endif
		143	#ifndef POSIX_FADV_WILLNEED
		144	# define POSIX_FADV_WILLNEED 0
		145	#endif
		146	#ifndef POSIX_FADV_DONTNEED
		147	# define POSIX_FADV_DONTNEED 0
		148	#endif
		149
		150	#ifndef ST_NODEV
		151	# define ST_NODEV 0
		152	#endif
		153	#ifndef ST_NOEXEC
		154	# define ST_NOEXEC 0
		155	#endif
		156	#ifndef ST_SYNCHRONOUS
		157	# define ST_SYNCHRONOUS 0
		158	#endif
		159	#ifndef ST_MANDLOCK
		160	# define ST_MANDLOCK 0
		161	#endif
		162	#ifndef ST_WRITE
		163	# define ST_WRITE 0
		164	#endif
		165	#ifndef ST_APPEND
		166	# define ST_APPEND 0
		167	#endif
		168	#ifndef ST_IMMUTABLE
		169	# define ST_IMMUTABLE 0
		170	#endif
		171	#ifndef ST_NOATIME
		172	# define ST_NOATIME 0
		173	#endif
		174	#ifndef ST_NODIRATIME
		175	# define ST_NODIRATIME 0
		176	#endif
		177	#ifndef ST_RELATIME
		178	# define ST_RELATIME 0
		179	#endif
		180
		181	#ifndef MCL_CURRENT
		182	# define MCL_CURRENT 0
		183	#endif
		184	#ifndef MCL_FUTURE
		185	# define MCL_FUTURE 0
		186	#endif
		187
		188	#ifndef MAP_ANONYMOUS
		189	# ifdef MAP_ANON
		190	# define MAP_ANONYMOUS MAP_ANON
		191	# else
		192	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		193	# endif
		194	#endif
		195	#ifndef MAP_HUGETLB
		196	# define MAP_HUGETLB 0
		197	#endif
		198	#ifndef MAP_LOCKED
		199	# define MAP_LOCKED 0
		200	#endif
		201	#ifndef MAP_NORESERVE
		202	# define MAP_NORESERVE 0
		203	#endif
		204	#ifndef MAP_POPULATE
		205	# define MAP_POPULATE 0
		206	#endif
		207	#ifndef MAP_NONBLOCK
		208	# define MAP_NONBLOCK 0
		209	#endif
		210
		211	#ifndef PAGESIZE
		212	# define PAGESIZE sysconf (_SC_PAGESIZE)
		213	#endif
		214
		215	static int req_invoke (eio_req *req);
		216	#define EIO_FINISH(req) req_invoke (req)
		217	static void req_destroy (eio_req *grp);
		218	#define EIO_DESTROY(req) req_destroy (req)
109		219
110	enum {	220	enum {
111	REQ_QUIT,	221	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
112	REQ_OPEN, REQ_CLOSE,
113	REQ_READ, REQ_WRITE,
114	REQ_READAHEAD, REQ_SENDFILE,
115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
116	REQ_TRUNCATE, REQ_FTRUNCATE,
117	REQ_UTIME, REQ_FUTIME,
118	REQ_CHMOD, REQ_FCHMOD,
119	REQ_CHOWN, REQ_FCHOWN,
120	REQ_FSYNC, REQ_FDATASYNC,
121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
122	REQ_MKNOD, REQ_READDIR,
123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
124	REQ_GROUP, REQ_NOP,
125	REQ_BUSY,
126	};	222	};
127		223
128	#define AIO_REQ_KLASS "IO::AIO::REQ"	224	#include "libeio/eio.c"
129	#define AIO_GRP_KLASS "IO::AIO::GRP"
130		225
131	typedef struct aio_cb
132	{
133	struct aio_cb *volatile next;
134
135	SV *callback;
136	SV *sv1, *sv2;
137	void *ptr1, *ptr2;
138	off_t offs;
139	size_t size;
140	ssize_t result;
141	double nv1, nv2;
142
143	STRLEN stroffset;
144	int type;
145	int int1, int2, int3;
146	int errorno;
147	mode_t mode; /* open */
148
149	unsigned char flags;
150	unsigned char pri;
151
152	SV *self; /* the perl counterpart of this request, if any */
153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
154	} aio_cb;
155
156	enum {
157	FLAG_CANCELLED = 0x01, /* request was cancelled */
158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
160	};
161
162	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
163	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
164		228
165	enum {	229	static SV *on_next_submit;
166	PRI_MIN = -4,	230	static int next_pri = EIO_PRI_DEFAULT;
167	PRI_MAX = 4,	231	static int max_outstanding;
168		232
169	DEFAULT_PRI = 0,	233	static s_epipe respipe;
170	PRI_BIAS = -PRI_MIN,
171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
172	};
173		234
174	#define AIO_TICKS ((1000000 + 1023) >> 10)
175
176	static unsigned int max_poll_time = 0;
177	static unsigned int max_poll_reqs = 0;
178
179	/* calculcate time difference in ~1/AIO_TICKS of a second */
180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
181	{
182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
184	}
185
186	static thread_t main_tid;
187	static int main_sig;
188	static int block_sig_level;
189
190	void block_sig ()
191	{
192	sigset_t ss;
193
194	if (block_sig_level++)
195	return;
196
197	if (!main_sig)
198	return;
199
200	sigemptyset (&ss);
201	sigaddset (&ss, main_sig);
202	pthread_sigmask (SIG_BLOCK, &ss, 0);
203	}
204
205	void unblock_sig ()
206	{
207	sigset_t ss;
208
209	if (--block_sig_level)
210	return;
211
212	if (!main_sig)
213	return;
214
215	sigemptyset (&ss);
216	sigaddset (&ss, main_sig);
217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
218	}
219
220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
221
222	static unsigned int started, idle, wanted;
223
224	/* worker threads management */
225	static mutex_t wrklock = X_MUTEX_INIT;
226
227	typedef struct worker {
228	/* locked by wrklock */
229	struct worker *prev, *next;
230
231	thread_t tid;
232
233	/* locked by reslock, reqlock or wrklock */
234	aio_req req; /* currently processed request */
235	void *dbuf;
236	DIR *dirp;
237	} worker;
238
239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
240
241	static void worker_clear (worker *wrk)
242	{
243	if (wrk->dirp)
244	{
245	closedir (wrk->dirp);
246	wrk->dirp = 0;
247	}
248
249	if (wrk->dbuf)
250	{
251	free (wrk->dbuf);
252	wrk->dbuf = 0;
253	}
254	}
255
256	static void worker_free (worker *wrk)
257	{
258	wrk->next->prev = wrk->prev;
259	wrk->prev->next = wrk->next;
260
261	free (wrk);
262	}
263
264	static volatile unsigned int nreqs, nready, npending;
265	static volatile unsigned int max_idle = 4;
266	static volatile unsigned int max_outstanding = 0xffffffff;
267	static int respipe [2];
268
269	static mutex_t reslock = X_MUTEX_INIT;
270	static mutex_t reqlock = X_MUTEX_INIT;
271	static cond_t reqwait = X_COND_INIT;
272
273	#if WORDACCESS_UNSAFE
274
275	static unsigned int get_nready ()
276	{
277	unsigned int retval;
278
279	X_LOCK (reqlock);
280	retval = nready;
281	X_UNLOCK (reqlock);
282
283	return retval;
284	}
285
286	static unsigned int get_npending ()
287	{
288	unsigned int retval;
289
290	X_LOCK (reslock);
291	retval = npending;
292	X_UNLOCK (reslock);
293
294	return retval;
295	}
296
297	static unsigned int get_nthreads ()
298	{
299	unsigned int retval;
300
301	X_LOCK (wrklock);
302	retval = started;
303	X_UNLOCK (wrklock);
304
305	return retval;
306	}
307
308	#else
309
310	# define get_nready() nready
311	# define get_npending() npending
312	# define get_nthreads() started
313
314	#endif
315
316	/*
317	* a somewhat faster data structure might be nice, but
318	* with 8 priorities this actually needs <20 insns
319	* per shift, the most expensive operation.
320	*/
321	typedef struct {
322	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
323	int size;
324	} reqq;
325
326	static reqq req_queue;
327	static reqq res_queue;
328
329	int reqq_push (reqq *q, aio_req req)
330	{
331	int pri = req->pri;
332	req->next = 0;
333
334	if (q->qe[pri])
335	{
336	q->qe[pri]->next = req;
337	q->qe[pri] = req;
338	}
339	else
340	q->qe[pri] = q->qs[pri] = req;
341
342	return q->size++;
343	}
344
345	aio_req reqq_shift (reqq *q)
346	{
347	int pri;
348
349	if (!q->size)
350	return 0;
351
352	--q->size;
353
354	for (pri = NUM_PRI; pri--; )
355	{
356	aio_req req = q->qs[pri];
357
358	if (req)
359	{
360	if (!(q->qs[pri] = req->next))
361	q->qe[pri] = 0;
362
363	return req;
364	}
365	}
366
367	abort ();
368	}
369
370	static int poll_cb ();
371	static int req_invoke (aio_req req);
372	static void req_destroy (aio_req req);	235	static void req_destroy (aio_req req);
373	static void req_cancel (aio_req req);	236	static void req_cancel (aio_req req);
374		237
		238	static void want_poll (void)
		239	{
		240	/* write a dummy byte to the pipe so fh becomes ready */
		241	s_epipe_signal (&respipe);
		242	}
		243
		244	static void done_poll (void)
		245	{
		246	/* read any signals sent by the worker threads */
		247	s_epipe_drain (&respipe);
		248	}
		249
375	/* must be called at most once */	250	/* must be called at most once */
376	static SV *req_sv (aio_req req, const char *klass)	251	static SV *req_sv (aio_req req, HV *stash)
377	{	252	{
378	if (!req->self)	253	if (!req->self)
379	{	254	{
380	req->self = (SV *)newHV ();	255	req->self = (SV *)newHV ();
381	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	256	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
382	}	257	}
383		258
384	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	259	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
385	}	260	}
386		261
387	static aio_req SvAIO_REQ (SV *sv)	262	static aio_req SvAIO_REQ (SV *sv)
388	{	263	{
389	MAGIC *mg;	264	MAGIC *mg;
390		265
391	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	266	if (!SvROK (sv)
		267	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		268	&& SvSTASH (SvRV (sv)) != aio_req_stash
		269	&& !sv_derived_from (sv, "IO::AIO::REQ")))
392	croak ("object of class " AIO_REQ_KLASS " expected");	270	croak ("object of class IO::AIO::REQ expected");
393		271
394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
395		273
396	return mg ? (aio_req)mg->mg_ptr : 0;	274	return mg ? (aio_req)mg->mg_ptr : 0;
397	}	275	}
398		276
399	static void aio_grp_feed (aio_req grp)	277	static void aio_grp_feed (aio_req grp)
400	{	278	{
401	block_sig ();	279	if (grp->sv2 && SvOK (grp->sv2))
402
403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
404	{	280	{
405	int old_len = grp->size;
406
407	if (grp->sv2 && SvOK (grp->sv2))
408	{
409	dSP;	281	dSP;
410		282
411	ENTER;	283	ENTER;
412	SAVETMPS;	284	SAVETMPS;
413	PUSHMARK (SP);	285	PUSHMARK (SP);
414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	286	XPUSHs (req_sv (grp, aio_grp_stash));
415	PUTBACK;	287	PUTBACK;
416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	288	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
417	SPAGAIN;	289	SPAGAIN;
418	FREETMPS;	290	FREETMPS;
419	LEAVE;	291	LEAVE;
420	}
421
422	/* stop if no progress has been made */
423	if (old_len == grp->size)
424	{
425	SvREFCNT_dec (grp->sv2);
426	grp->sv2 = 0;
427	break;
428	}
429	}	292	}
430
431	unblock_sig ();
432	}	293	}
433		294
434	static void aio_grp_dec (aio_req grp)	295	static void req_submit (eio_req *req)
435	{	296	{
436	--grp->size;	297	eio_submit (req);
437		298
438	/* call feeder, if applicable */	299	if (expect_false (on_next_submit))
439	aio_grp_feed (grp);
440
441	/* finish, if done */
442	if (!grp->size && grp->int1)
443	{	300	{
444	block_sig ();	301	dSP;
		302	SV *cb = sv_2mortal (on_next_submit);
445		303
446	if (!req_invoke (grp))	304	on_next_submit = 0;
447	{
448	req_destroy (grp);
449	unblock_sig ();
450	croak (0);
451	}
452		305
453	req_destroy (grp);	306	PUSHMARK (SP);
454	unblock_sig ();	307	PUTBACK;
		308	call_sv (cb, G_DISCARD | G_EVAL);
455	}	309	}
456	}	310	}
457		311
458	static int req_invoke (aio_req req)	312	static int req_invoke (eio_req *req)
459	{	313	{
460	dSP;	314	dSP;
461		315
462	if (req->flags & FLAG_SV2_RO_OFF)	316	if (req->flags & FLAG_SV2_RO_OFF)
463	SvREADONLY_off (req->sv2);	317	SvREADONLY_off (req->sv2);
464		318
465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	319	if (!EIO_CANCELLED (req) && req->callback)
466	{	320	{
467	ENTER;	321	ENTER;
468	SAVETMPS;	322	SAVETMPS;
469	PUSHMARK (SP);	323	PUSHMARK (SP);
470	EXTEND (SP, 1);	324	EXTEND (SP, 1);
471		325
472	switch (req->type)	326	switch (req->type)
473	{	327	{
474	case REQ_READDIR:	328	case EIO_READDIR:
475	{	329	{
476	SV *rv = &PL_sv_undef;	330	SV *rv = &PL_sv_undef;
477		331
478	if (req->result >= 0)	332	if (req->result >= 0)
479	{	333	{
480	int i;	334	int i;
481	char *buf = req->ptr2;	335	char *names = (char *)req->ptr2;
		336	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
482	AV *av = newAV ();	337	AV *av = newAV ();
483		338
484	av_extend (av, req->result - 1);	339	av_extend (av, req->result - 1);
485		340
486	for (i = 0; i < req->result; ++i)	341	for (i = 0; i < req->result; ++i)
487	{	342	{
488	SV *sv = newSVpv (buf, 0);	343	if (req->int1 & EIO_READDIR_DENTS)
		344	{
		345	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
489		346
		347	if (req->int1 & EIO_READDIR_CUSTOM2)
		348	{
		349	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		350	AV *avent = newAV ();
		351
		352	av_extend (avent, 2);
		353
		354	if (!sv_type [ent->type])
		355	{
		356	sv_type [ent->type] = newSViv (ent->type);
		357	SvREADONLY_on (sv_type [ent->type]);
		358	}
		359
		360	av_store (avent, 0, namesv);
		361	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		362	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		363
		364	av_store (av, i, newRV_noinc ((SV *)avent));
		365	}
		366	else
490	av_store (av, i, sv);	367	av_store (av, i, namesv);
		368
		369	++ent;
		370	}
		371	else
		372	{
		373	SV *name = newSVpv (names, 0);
		374	av_store (av, i, name);
491	buf += SvCUR (sv) + 1;	375	names += SvCUR (name) + 1;
		376	}
492	}	377	}
493		378
494	rv = sv_2mortal (newRV_noinc ((SV *)av));	379	rv = sv_2mortal (newRV_noinc ((SV *)av));
495	}	380	}
496		381
497	PUSHs (rv);	382	PUSHs (rv);
		383
		384	if (req->int1 & EIO_READDIR_CUSTOM1)
		385	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
498	}	386	}
499	break;	387	break;
500		388
501	case REQ_OPEN:	389	case EIO_OPEN:
502	{	390	{
503	/* convert fd to fh */	391	/* convert fd to fh */
504	SV *fh;	392	SV *fh = &PL_sv_undef;
505		393
506	PUSHs (sv_2mortal (newSViv (req->result)));	394	if (req->result >= 0)
507	PUTBACK;	395	{
508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	396	GV *gv = (GV *)sv_newmortal ();
509	SPAGAIN;	397	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		398	char sym [64];
		399	int symlen;
		400
		401	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		402	gv_init (gv, aio_stash, sym, symlen, 0);
510		403
511	fh = POPs;	404	symlen = snprintf (
512	PUSHMARK (SP);	405	sym,
		406	sizeof (sym),
		407	"%s&=%d",
		408	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		409	(int)req->result
		410	);
		411
		412	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		413	fh = (SV *)gv;
		414	}
		415
513	XPUSHs (fh);	416	PUSHs (fh);
514	}	417	}
515	break;	418	break;
516		419
		420	case EIO_STATVFS:
		421	case EIO_FSTATVFS:
		422	{
		423	SV *rv = &PL_sv_undef;
		424
		425	if (req->result >= 0)
		426	{
		427	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		428	HV *hv = newHV ();
		429
		430	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		431
		432	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		433	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		434	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		435	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		436	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		437	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		438	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		439	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		440	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		441	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		442	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		443	}
		444
		445	PUSHs (rv);
		446	}
		447
		448	break;
		449
517	case REQ_GROUP:	450	case EIO_GROUP:
518	req->int1 = 2; /* mark group as finished */	451	req->int1 = 2; /* mark group as finished */
519		452
520	if (req->sv1)	453	if (req->sv1)
521	{	454	{
522	int i;	455	int i;
…		…
526	for (i = 0; i <= AvFILL (av); ++i)	459	for (i = 0; i <= AvFILL (av); ++i)
527	PUSHs (*av_fetch (av, i, 0));	460	PUSHs (*av_fetch (av, i, 0));
528	}	461	}
529	break;	462	break;
530		463
531	case REQ_NOP:	464	case EIO_NOP:
532	case REQ_BUSY:	465	case EIO_BUSY:
533	break;	466	break;
534		467
535	case REQ_READLINK:	468	case EIO_READLINK:
536	if (req->result > 0)	469	if (req->result > 0)
537	{	470	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
538	SvCUR_set (req->sv2, req->result);
539	*SvEND (req->sv2) = 0;
540	PUSHs (req->sv2);
541	}
542	break;	471	break;
543		472
544	case REQ_STAT:	473	case EIO_STAT:
545	case REQ_LSTAT:	474	case EIO_LSTAT:
546	case REQ_FSTAT:	475	case EIO_FSTAT:
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	476	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;	477	PL_laststatval = req->result;
549	PL_statcache = *(Stat_t *)(req->ptr2);	478	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
550	PUSHs (sv_2mortal (newSViv (req->result)));	479	PUSHs (sv_2mortal (newSViv (req->result)));
551	break;	480	break;
552		481
553	case REQ_READ:	482	case EIO_READ:
		483	{
554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	484	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
555	*SvEND (req->sv2) = 0;	485	*SvEND (req->sv2) = 0;
		486	SvPOK_only (req->sv2);
		487	SvSETMAGIC (req->sv2);
556	PUSHs (sv_2mortal (newSViv (req->result)));	488	PUSHs (sv_2mortal (newSViv (req->result)));
		489	}
557	break;	490	break;
		491
		492	case EIO_DUP2:
		493	if (req->result > 0)
		494	req->result = 0;
		495	/* FALLTHROUGH */
558		496
559	default:	497	default:
560	PUSHs (sv_2mortal (newSViv (req->result)));	498	PUSHs (sv_2mortal (newSViv (req->result)));
561	break;	499	break;
562	}	500	}
563		501
564	errno = req->errorno;	502	errno = req->errorno;
565		503
566	PUTBACK;	504	PUTBACK;
567	call_sv (req->callback, G_VOID | G_EVAL);	505	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
568	SPAGAIN;	506	SPAGAIN;
569		507
570	FREETMPS;	508	FREETMPS;
571	LEAVE;	509	LEAVE;
		510
		511	PUTBACK;
572	}	512	}
573		513
574	if (req->grp)
575	{
576	aio_req grp = req->grp;
577
578	/* unlink request */
579	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
580	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
581
582	if (grp->grp_first == req)
583	grp->grp_first = req->grp_next;
584
585	aio_grp_dec (grp);
586	}
587
588	return !SvTRUE (ERRSV);	514	return !!SvTRUE (ERRSV);
589	}	515	}
590		516
591	static void req_destroy (aio_req req)	517	static void req_destroy (aio_req req)
592	{	518	{
593	if (req->self)	519	if (req->self)
…		…
598		524
599	SvREFCNT_dec (req->sv1);	525	SvREFCNT_dec (req->sv1);
600	SvREFCNT_dec (req->sv2);	526	SvREFCNT_dec (req->sv2);
601	SvREFCNT_dec (req->callback);	527	SvREFCNT_dec (req->callback);
602		528
603	if (req->flags & FLAG_PTR2_FREE)
604	free (req->ptr2);
605
606	Safefree (req);	529	Safefree (req);
607	}	530	}
608		531
609	static void req_cancel_subs (aio_req grp)	532	static void req_cancel_subs (aio_req grp)
610	{	533	{
611	aio_req sub;	534	aio_req sub;
612		535
613	if (grp->type != REQ_GROUP)	536	if (grp->type != EIO_GROUP)
614	return;	537	return;
615		538
616	SvREFCNT_dec (grp->sv2);	539	SvREFCNT_dec (grp->sv2);
617	grp->sv2 = 0;	540	grp->sv2 = 0;
618		541
619	for (sub = grp->grp_first; sub; sub = sub->grp_next)	542	eio_grp_cancel (grp);
620	req_cancel (sub);
621	}	543	}
622		544
623	static void req_cancel (aio_req req)	545	static void
		546	create_respipe (void)
624	{	547	{
625	req->flags |= FLAG_CANCELLED;	548	if (s_epipe_renew (&respipe))
626		549	croak ("IO::AIO: unable to initialize result pipe");
627	req_cancel_subs (req);
628	}	550	}
629		551
630	X_THREAD_PROC (aio_proc);
631
632	static void start_thread (void)
633	{
634	worker *wrk = calloc (1, sizeof (worker));
635
636	if (!wrk)
637	croak ("unable to allocate worker thread data");
638
639	X_LOCK (wrklock);
640
641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
642	{
643	wrk->prev = &wrk_first;
644	wrk->next = wrk_first.next;
645	wrk_first.next->prev = wrk;
646	wrk_first.next = wrk;
647	++started;
648	}
649	else
650	free (wrk);
651
652	X_UNLOCK (wrklock);
653	}
654
655	static void maybe_start_thread ()
656	{
657	if (get_nthreads () >= wanted)
658	return;
659
660	/* todo: maybe use idle here, but might be less exact */
661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
662	return;
663
664	start_thread ();
665	}
666
667	static void req_send (aio_req req)
668	{
669	block_sig ();
670
671	++nreqs;
672
673	X_LOCK (reqlock);
674	++nready;
675	reqq_push (&req_queue, req);
676	X_COND_SIGNAL (reqwait);
677	X_UNLOCK (reqlock);
678
679	unblock_sig ();
680
681	maybe_start_thread ();
682	}
683
684	static void end_thread (void)
685	{
686	aio_req req;
687
688	Newz (0, req, 1, aio_cb);
689
690	req->type = REQ_QUIT;
691	req->pri = PRI_MAX + PRI_BIAS;
692
693	X_LOCK (reqlock);
694	reqq_push (&req_queue, req);
695	X_COND_SIGNAL (reqwait);
696	X_UNLOCK (reqlock);
697
698	X_LOCK (wrklock);
699	--started;
700	X_UNLOCK (wrklock);
701	}
702
703	static void set_max_idle (int nthreads)
704	{
705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
706	max_idle = nthreads <= 0 ? 1 : nthreads;
707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
708	}
709
710	static void min_parallel (int nthreads)
711	{
712	if (wanted < nthreads)
713	wanted = nthreads;
714	}
715
716	static void max_parallel (int nthreads)
717	{
718	if (wanted > nthreads)
719	wanted = nthreads;
720
721	while (started > wanted)
722	end_thread ();
723	}
724
725	static void poll_wait ()	552	static void poll_wait (void)
726	{	553	{
727	fd_set rfd;
728
729	while (nreqs)	554	while (eio_nreqs ())
730	{	555	{
731	int size;	556	int size;
732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	557
		558	X_LOCK (reslock);
733	size = res_queue.size;	559	size = res_queue.size;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	560	X_UNLOCK (reslock);
735		561
736	if (size)	562	if (size)
737	return;	563	return;
738		564
739	maybe_start_thread ();	565	etp_maybe_start_thread ();
740		566
741	FD_ZERO(&rfd);	567	s_epipe_wait (&respipe);
742	FD_SET(respipe [0], &rfd);
743
744	select (respipe [0] + 1, &rfd, 0, 0, 0);
745	}	568	}
746	}	569	}
747		570
748	static int poll_cb ()	571	static int poll_cb (void)
749	{	572	{
750	dSP;
751	int count = 0;
752	int maxreqs = max_poll_reqs;
753	int do_croak = 0;
754	struct timeval tv_start, tv_now;
755	aio_req req;
756
757	if (max_poll_time)
758	gettimeofday (&tv_start, 0);
759
760	block_sig ();
761
762	for (;;)	573	for (;;)
763	{	574	{
764	for (;;)	575	int res = eio_poll ();
765	{
766	maybe_start_thread ();
767		576
768	X_LOCK (reslock);	577	if (res > 0)
769	req = reqq_shift (&res_queue);
770
771	if (req)
772	{
773	--npending;
774
775	if (!res_queue.size)
776	{
777	/* read any signals sent by the worker threads */
778	char buf [4];
779	while (read (respipe [0], buf, 4) == 4)
780	;
781	}
782	}
783
784	X_UNLOCK (reslock);
785
786	if (!req)
787	break;
788
789	--nreqs;
790
791	if (req->type == REQ_GROUP && req->size)
792	{
793	req->int1 = 1; /* mark request as delayed */
794	continue;
795	}
796	else
797	{
798	if (!req_invoke (req))
799	{
800	req_destroy (req);
801	unblock_sig ();
802	croak (0);	578	croak (0);
803	}
804		579
805	count++;	580	if (!max_outstanding || max_outstanding > eio_nreqs ())
806	}	581	return res;
807
808	req_destroy (req);
809
810	if (maxreqs && !--maxreqs)
811	break;
812
813	if (max_poll_time)
814	{
815	gettimeofday (&tv_now, 0);
816
817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
818	break;
819	}
820	}
821
822	if (nreqs <= max_outstanding)
823	break;
824		582
825	poll_wait ();	583	poll_wait ();
826
827	++maxreqs;
828	}	584	}
		585	}
829		586
830	unblock_sig ();	587	static void atfork_child (void)
831	return count;	588	{
		589	create_respipe ();
832	}	590	}
833		591
834	/*****************************************************************************/	592	/*****************************************************************************/
835	/* work around various missing functions */
836		593
837	#if !HAVE_PREADWRITE	594	#define MMAP_MAGIC PERL_MAGIC_ext
838	# define pread aio_pread
839	# define pwrite aio_pwrite
840		595
841	/*	596	static int
842	* make our pread/pwrite safe against themselves, but not against	597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
843	* normal read/write by using a mutex. slows down execution a lot,
844	* but that's your problem, not mine.
845	*/
846	static mutex_t preadwritelock = X_MUTEX_INIT;
847
848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
849	{	598	{
850	ssize_t res;	599	int old_errno = errno;
851	off_t ooffset;	600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
852
853	X_LOCK (preadwritelock);
854	ooffset = lseek (fd, 0, SEEK_CUR);
855	lseek (fd, offset, SEEK_SET);
856	res = read (fd, buf, count);
857	lseek (fd, ooffset, SEEK_SET);
858	X_UNLOCK (preadwritelock);
859
860	return res;
861	}
862
863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
864	{
865	ssize_t res;
866	off_t ooffset;
867
868	X_LOCK (preadwritelock);
869	ooffset = lseek (fd, 0, SEEK_CUR);
870	lseek (fd, offset, SEEK_SET);
871	res = write (fd, buf, count);
872	lseek (fd, offset, SEEK_SET);
873	X_UNLOCK (preadwritelock);
874
875	return res;
876	}
877	#endif
878
879	#ifndef HAVE_FUTIMES
880
881	# define utimes(path,times) aio_utimes (path, times)
882	# define futimes(fd,times) aio_futimes (fd, times)
883
884	int aio_utimes (const char *filename, const struct timeval times[2])
885	{
886	if (times)
887	{
888	struct utimbuf buf;
889
890	buf.actime = times[0].tv_sec;
891	buf.modtime = times[1].tv_sec;
892
893	return utime (filename, &buf);
894	}
895	else
896	return utime (filename, 0);
897	}
898
899	int aio_futimes (int fd, const struct timeval tv[2])
900	{
901	errno = ENOSYS;
902	return -1;
903	}
904
905	#endif
906
907	#if !HAVE_FDATASYNC
908	# define fdatasync fsync
909	#endif
910
911	#if !HAVE_READAHEAD
912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
913
914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
915	{
916	size_t todo = count;
917	dBUF;
918
919	while (todo > 0)
920	{
921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
922
923	pread (fd, aio_buf, len, offset);
924	offset += len;
925	todo -= len;
926	}
927
928	errno = 0;
929	return count;
930	}
931
932	#endif
933
934	#if !HAVE_READDIR_R
935	# define readdir_r aio_readdir_r
936
937	static mutex_t readdirlock = X_MUTEX_INIT;
938
939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
940	{
941	X_DIRENT *e;
942	int errorno;
943
944	X_LOCK (readdirlock);
945
946	e = readdir (dirp);
947	errorno = errno;	601	errno = old_errno;
948		602
949	if (e)	603	mg->mg_obj = 0; /* just in case */
950	{
951	*res = ent;
952	strcpy (ent->d_name, e->d_name);
953	}
954	else
955	*res = 0;
956		604
957	X_UNLOCK (readdirlock);	605	SvREADONLY_off (sv);
		606	SvCUR_set (sv, 0);
		607	SvLEN_set (sv, 0);
		608	SvPVX (sv) = 0;
		609	SvOK_off (sv);
958		610
959	errno = errorno;
960	return e ? 0 : -1;
961	}
962	#endif
963
964	/* sendfile always needs emulation */
965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
966	{
967	ssize_t res;
968
969	if (!count)
970	return 0;	611	return 0;
971
972	#if HAVE_SENDFILE
973	# if __linux
974	res = sendfile (ofd, ifd, &offset, count);
975
976	# elif __freebsd
977	/*
978	* Of course, the freebsd sendfile is a dire hack with no thoughts
979	* wasted on making it similar to other I/O functions.
980	*/
981	{
982	off_t sbytes;
983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
984
985	if (res < 0 && sbytes)
986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
987	res = sbytes;
988	}
989
990	# elif __hpux
991	res = sendfile (ofd, ifd, offset, count, 0, 0);
992
993	# elif __solaris
994	{
995	struct sendfilevec vec;
996	size_t sbytes;
997
998	vec.sfv_fd = ifd;
999	vec.sfv_flag = 0;
1000	vec.sfv_off = offset;
1001	vec.sfv_len = count;
1002
1003	res = sendfilev (ofd, &vec, 1, &sbytes);
1004
1005	if (res < 0 && sbytes)
1006	res = sbytes;
1007	}
1008
1009	# endif
1010	#else
1011	res = -1;
1012	errno = ENOSYS;
1013	#endif
1014
1015	if (res < 0
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1017	#if __solaris
1018	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1019	#endif
1020	)
1021	)
1022	{
1023	/* emulate sendfile. this is a major pain in the ass */
1024	dBUF;
1025
1026	res = 0;
1027
1028	while (count)
1029	{
1030	ssize_t cnt;
1031
1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1033
1034	if (cnt <= 0)
1035	{
1036	if (cnt && !res) res = -1;
1037	break;
1038	}
1039
1040	cnt = write (ofd, aio_buf, cnt);
1041
1042	if (cnt <= 0)
1043	{
1044	if (cnt && !res) res = -1;
1045	break;
1046	}
1047
1048	offset += cnt;
1049	res += cnt;
1050	count -= cnt;
1051	}
1052	}
1053
1054	return res;
1055	}	612	}
1056		613
1057	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
1058	static void scandir_ (aio_req req, worker *self)	615	0, 0, 0, 0, mmap_free
1059	{	616	};
1060	DIR *dirp;
1061	union
1062	{
1063	X_DIRENT d;
1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1065	} *u;
1066	X_DIRENT *entp;
1067	char *name, *names;
1068	int memlen = 4096;
1069	int memofs = 0;
1070	int res = 0;
1071
1072	X_LOCK (wrklock);
1073	self->dirp = dirp = opendir (req->ptr1);
1074	self->dbuf = u = malloc (sizeof (*u));
1075	req->flags |= FLAG_PTR2_FREE;
1076	req->ptr2 = names = malloc (memlen);
1077	X_UNLOCK (wrklock);
1078
1079	if (dirp && u && names)
1080	for (;;)
1081	{
1082	errno = 0;
1083	readdir_r (dirp, &u->d, &entp);
1084
1085	if (!entp)
1086	break;
1087
1088	name = entp->d_name;
1089
1090	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1091	{
1092	int len = strlen (name) + 1;
1093
1094	res++;
1095
1096	while (memofs + len > memlen)
1097	{
1098	memlen *= 2;
1099	X_LOCK (wrklock);
1100	req->ptr2 = names = realloc (names, memlen);
1101	X_UNLOCK (wrklock);
1102
1103	if (!names)
1104	break;
1105	}
1106
1107	memcpy (names + memofs, name, len);
1108	memofs += len;
1109	}
1110	}
1111
1112	if (errno)
1113	res = -1;
1114
1115	req->result = res;
1116	}
1117		617
1118	/*****************************************************************************/	618	/*****************************************************************************/
1119		619
1120	X_THREAD_PROC (aio_proc)	620	static SV *
		621	get_cb (SV *cb_sv)
1121	{	622	{
1122	{//D	623	SvGETMAGIC (cb_sv);
1123	aio_req req;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1124	struct timespec ts;
1125	worker *self = (worker *)thr_arg;
1126
1127	/* try to distribute timeouts somewhat randomly */
1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1129
1130	for (;;)
1131	{
1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1133
1134	X_LOCK (reqlock);
1135
1136	for (;;)
1137	{
1138	self->req = req = reqq_shift (&req_queue);
1139
1140	if (req)
1141	break;
1142
1143	++idle;
1144
1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1146	== ETIMEDOUT)
1147	{
1148	if (idle > max_idle)
1149	{
1150	--idle;
1151	X_UNLOCK (reqlock);
1152	X_LOCK (wrklock);
1153	--started;
1154	X_UNLOCK (wrklock);
1155	goto quit;
1156	}
1157
1158	/* we are allowed to idle, so do so without any timeout */
1159	X_COND_WAIT (reqwait, reqlock);
1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1161	}
1162
1163	--idle;
1164	}
1165
1166	--nready;
1167
1168	X_UNLOCK (reqlock);
1169
1170	errno = 0; /* strictly unnecessary */
1171
1172	if (!(req->flags & FLAG_CANCELLED))
1173	switch (req->type)
1174	{
1175	case REQ_READ: req->result = req->offs >= 0
1176	? pread (req->int1, req->ptr1, req->size, req->offs)
1177	: read (req->int1, req->ptr1, req->size); break;
1178	case REQ_WRITE: req->result = req->offs >= 0
1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1180	: write (req->int1, req->ptr1, req->size); break;
1181
1182	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1184
1185	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1186	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1188
1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1195
1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1197	case REQ_CLOSE: req->result = close (req->int1); break;
1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1206
1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
1209	case REQ_READDIR: scandir_ (req, self); break;
1210
1211	case REQ_BUSY:
1212	#ifdef _WIN32
1213	Sleep (req->nv1 * 1000.);
1214	#else
1215	{
1216	struct timeval tv;
1217
1218	tv.tv_sec = req->nv1;
1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1220
1221	req->result = select (0, 0, 0, 0, &tv);
1222	}
1223	#endif
1224	break;
1225
1226	case REQ_UTIME:
1227	case REQ_FUTIME:
1228	{
1229	struct timeval tv[2];
1230	struct timeval *times;
1231
1232	if (req->nv1 != -1. || req->nv2 != -1.)
1233	{
1234	tv[0].tv_sec = req->nv1;
1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1236	tv[1].tv_sec = req->nv2;
1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1238
1239	times = tv;
1240	}
1241	else
1242	times = 0;
1243
1244
1245	req->result = req->type == REQ_FUTIME
1246	? futimes (req->int1, times)
1247	: utimes (req->ptr1, times);
1248	}
1249
1250	case REQ_GROUP:
1251	case REQ_NOP:
1252	break;
1253
1254	case REQ_QUIT:
1255	goto quit;
1256
1257	default:
1258	req->result = -1;
1259	break;
1260	}
1261
1262	req->errorno = errno;
1263
1264	X_LOCK (reslock);
1265
1266	++npending;
1267
1268	if (!reqq_push (&res_queue, req))
1269	{
1270	/* write a dummy byte to the pipe so fh becomes ready */
1271	write (respipe [1], &respipe, 1);
1272
1273	/* optionally signal the main thread asynchronously */
1274	if (main_sig)
1275	pthread_kill (main_tid, main_sig);
1276	}
1277
1278	self->req = 0;
1279	worker_clear (self);
1280
1281	X_UNLOCK (reslock);
1282	}
1283
1284	quit:
1285	X_LOCK (wrklock);
1286	worker_free (self);
1287	X_UNLOCK (wrklock);
1288
1289	return 0;
1290	}//D
1291	}
1292
1293	/*****************************************************************************/
1294
1295	static void atfork_prepare (void)
1296	{
1297	X_LOCK (wrklock);
1298	X_LOCK (reqlock);
1299	X_LOCK (reslock);
1300	#if !HAVE_PREADWRITE
1301	X_LOCK (preadwritelock);
1302	#endif
1303	#if !HAVE_READDIR_R
1304	X_LOCK (readdirlock);
1305	#endif
1306	}
1307
1308	static void atfork_parent (void)
1309	{
1310	#if !HAVE_READDIR_R
1311	X_UNLOCK (readdirlock);
1312	#endif
1313	#if !HAVE_PREADWRITE
1314	X_UNLOCK (preadwritelock);
1315	#endif
1316	X_UNLOCK (reslock);
1317	X_UNLOCK (reqlock);
1318	X_UNLOCK (wrklock);
1319	}
1320
1321	static void atfork_child (void)
1322	{
1323	aio_req prv;
1324
1325	while (prv = reqq_shift (&req_queue))
1326	req_destroy (prv);
1327
1328	while (prv = reqq_shift (&res_queue))
1329	req_destroy (prv);
1330
1331	while (wrk_first.next != &wrk_first)
1332	{
1333	worker *wrk = wrk_first.next;
1334
1335	if (wrk->req)
1336	req_destroy (wrk->req);
1337
1338	worker_clear (wrk);
1339	worker_free (wrk);
1340	}
1341
1342	started = 0;
1343	idle = 0;
1344	nreqs = 0;
1345	nready = 0;
1346	npending = 0;
1347
1348	close (respipe [0]);
1349	close (respipe [1]);
1350
1351	if (!create_pipe (respipe))
1352	croak ("cannot set result pipe to nonblocking mode");
1353
1354	atfork_parent ();
1355	}	625	}
1356		626
1357	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
1358	aio_req req; \	629	aio_req req; \
1359	int req_pri = next_pri; \	630	int req_pri = next_pri; \
1360	next_pri = DEFAULT_PRI + PRI_BIAS; \	631	next_pri = EIO_PRI_DEFAULT; \
1361	\	632	\
1362	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
1363	croak ("callback must be undef or of reference type"); \
1364	\	634	\
1365	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
1366	if (!req) \	636	if (!req) \
1367	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
1368	\	638	\
1369	req->callback = newSVsv (callback); \	639	req->callback = SvREFCNT_inc (cb_cv); \
1370	req->pri = req_pri	640	req->pri = req_pri
1371		641
1372	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
1373	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
1374	\	646	\
1375	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
1376	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
1377		649
1378	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
1379		651
1380	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
1381		653
1382	BOOT:	654	BOOT:
1383	{	655	{
1384	HV *stash = gv_stashpv ("IO::AIO", 1);	656	static const struct {
1385		657	const char *name;
1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	658	IV iv;
1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	659	} *civ, const_iv[] = {
1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	660	# define const_niv(name, value) { # name, (IV) value },
1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	661	# define const_iv(name) { # name, (IV) name },
1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	662	# define const_eio(name) { # name, (IV) EIO_ ## name },
		663	const_iv (EXDEV)
		664	const_iv (ENOSYS)
		665	const_iv (O_RDONLY)
		666	const_iv (O_WRONLY)
		667	const_iv (O_CREAT)
		668	const_iv (O_TRUNC)
1391	#ifdef _WIN32	669	#ifndef _WIN32
1392	X_MUTEX_CHECK (wrklock);	670	const_iv (S_IFIFO)
1393	X_MUTEX_CHECK (reslock);
1394	X_MUTEX_CHECK (reqlock);
1395	X_MUTEX_CHECK (reqwait);
1396	X_MUTEX_CHECK (preadwritelock);
1397	X_MUTEX_CHECK (readdirlock);
1398	#else
1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1401	#endif	671	#endif
		672	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		673	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		674	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		675	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		676	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		677	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1402		678
1403	if (!create_pipe (respipe))	679	const_iv (ST_RDONLY)
1404	croak ("cannot set result pipe to nonblocking mode");	680	const_iv (ST_NOSUID)
		681	const_iv (ST_NODEV)
		682	const_iv (ST_NOEXEC)
		683	const_iv (ST_SYNCHRONOUS)
		684	const_iv (ST_MANDLOCK)
		685	const_iv (ST_WRITE)
		686	const_iv (ST_APPEND)
		687	const_iv (ST_IMMUTABLE)
		688	const_iv (ST_NOATIME)
		689	const_iv (ST_NODIRATIME)
		690	const_iv (ST_RELATIME)
1405		691
1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	692	const_iv (PROT_EXEC)
		693	const_iv (PROT_NONE)
		694	const_iv (PROT_READ)
		695	const_iv (PROT_WRITE)
		696
		697	/*const_iv (MAP_FIXED)*/
		698	const_iv (MAP_PRIVATE)
		699	const_iv (MAP_SHARED)
		700	const_iv (MAP_ANONYMOUS)
		701
		702	/* linuxish */
		703	const_iv (MAP_HUGETLB)
		704	const_iv (MAP_LOCKED)
		705	const_iv (MAP_NORESERVE)
		706	const_iv (MAP_POPULATE)
		707	const_iv (MAP_NONBLOCK)
		708
		709	const_iv (MCL_FUTURE)
		710	const_iv (MCL_CURRENT)
		711
		712	const_eio (MS_ASYNC)
		713	const_eio (MS_INVALIDATE)
		714	const_eio (MS_SYNC)
		715
		716	const_eio (MT_MODIFY)
		717
		718	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		719	const_eio (SYNC_FILE_RANGE_WRITE)
		720	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		721
		722	const_eio (READDIR_DENTS)
		723	const_eio (READDIR_DIRS_FIRST)
		724	const_eio (READDIR_STAT_ORDER)
		725	const_eio (READDIR_FOUND_UNKNOWN)
		726
		727	const_eio (DT_UNKNOWN)
		728	const_eio (DT_FIFO)
		729	const_eio (DT_CHR)
		730	const_eio (DT_DIR)
		731	const_eio (DT_BLK)
		732	const_eio (DT_REG)
		733	const_eio (DT_LNK)
		734	const_eio (DT_SOCK)
		735	const_eio (DT_WHT)
		736	};
		737
		738	aio_stash = gv_stashpv ("IO::AIO" , 1);
		739	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		740	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		741
		742	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		743	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		744
		745	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		746
		747	create_respipe ();
		748
		749	if (eio_init (want_poll, done_poll) < 0)
		750	croak ("IO::AIO: unable to initialise eio library");
		751
		752	/* atfork child called in fifo order, so before eio's handler */
		753	X_THREAD_ATFORK (0, 0, atfork_child);
1407	}	754	}
1408		755
1409	void	756	void
1410	max_poll_reqs (int nreqs)	757	max_poll_reqs (int nreqs)
1411	PROTOTYPE: $	758	PROTOTYPE: $
1412	CODE:	759	CODE:
1413	max_poll_reqs = nreqs;	760	eio_set_max_poll_reqs (nreqs);
1414		761
1415	void	762	void
1416	max_poll_time (double nseconds)	763	max_poll_time (double nseconds)
1417	PROTOTYPE: $	764	PROTOTYPE: $
1418	CODE:	765	CODE:
1419	max_poll_time = nseconds * AIO_TICKS;	766	eio_set_max_poll_time (nseconds);
1420		767
1421	void	768	void
1422	min_parallel (int nthreads)	769	min_parallel (int nthreads)
1423	PROTOTYPE: $	770	PROTOTYPE: $
		771	CODE:
		772	eio_set_min_parallel (nthreads);
1424		773
1425	void	774	void
1426	max_parallel (int nthreads)	775	max_parallel (int nthreads)
1427	PROTOTYPE: $	776	PROTOTYPE: $
		777	CODE:
		778	eio_set_max_parallel (nthreads);
1428		779
1429	void	780	void
1430	max_idle (int nthreads)	781	max_idle (int nthreads)
1431	PROTOTYPE: $	782	PROTOTYPE: $
1432	CODE:	783	CODE:
1433	set_max_idle (nthreads);	784	eio_set_max_idle (nthreads);
1434		785
1435	int	786	void
1436	max_outstanding (int maxreqs)	787	max_outstanding (int maxreqs)
1437	PROTOTYPE: $	788	PROTOTYPE: $
1438	CODE:	789	CODE:
1439	RETVAL = max_outstanding;
1440	max_outstanding = maxreqs;	790	max_outstanding = maxreqs;
1441	OUTPUT:
1442	RETVAL
1443		791
1444	void	792	void
1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	793	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1446	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
1447	PPCODE:	795	PPCODE:
1448	{	796	{
1449	dREQ;	797	dREQ;
1450		798
1451	req->type = REQ_OPEN;	799	req->type = EIO_OPEN;
1452	req->sv1 = newSVsv (pathname);	800	req->sv1 = newSVsv (pathname);
1453	req->ptr1 = SvPVbyte_nolen (req->sv1);	801	req->ptr1 = SvPVbyte_nolen (req->sv1);
1454	req->int1 = flags;	802	req->int1 = flags;
1455	req->mode = mode;	803	req->int2 = mode;
1456		804
1457	REQ_SEND;	805	REQ_SEND;
		806	}
		807
		808	void
		809	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		810	PROTOTYPE: $;$
		811	ALIAS:
		812	aio_fsync = EIO_FSYNC
		813	aio_fdatasync = EIO_FDATASYNC
		814	PPCODE:
		815	{
		816	int fd = s_fileno_croak (fh, 0);
		817	dREQ;
		818
		819	req->type = ix;
		820	req->sv1 = newSVsv (fh);
		821	req->int1 = fd;
		822
		823	REQ_SEND (req);
		824	}
		825
		826	void
		827	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		828	PROTOTYPE: $$$$;$
		829	PPCODE:
		830	{
		831	int fd = s_fileno_croak (fh, 0);
		832	dREQ;
		833
		834	req->type = EIO_SYNC_FILE_RANGE;
		835	req->sv1 = newSVsv (fh);
		836	req->int1 = fd;
		837	req->offs = offset;
		838	req->size = nbytes;
		839	req->int2 = flags;
		840
		841	REQ_SEND (req);
1458	}	842	}
1459		843
1460	void	844	void
1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)	845	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1462	PROTOTYPE: $;$	846	PROTOTYPE: $;$
1463	ALIAS:
1464	aio_close = REQ_CLOSE
1465	aio_fsync = REQ_FSYNC
1466	aio_fdatasync = REQ_FDATASYNC
1467	PPCODE:	847	PPCODE:
1468	{	848	{
		849	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		850	int fd = s_fileno_croak (fh, 0);
1469	dREQ;	851	dREQ;
1470		852
		853	if (close_pipe < 0)
		854	{
		855	int pipefd [2];
		856
		857	if (pipe (pipefd) < 0
		858	|| close (pipefd [1]) < 0
		859	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		860	abort (); /*D*/
		861
		862	close_pipe = pipefd [0];
		863	}
		864
1471	req->type = ix;	865	req->type = EIO_DUP2;
		866	req->int1 = close_pipe;
1472	req->sv1 = newSVsv (fh);	867	req->sv2 = newSVsv (fh);
1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	868	req->int2 = fd;
1474		869
1475	REQ_SEND (req);	870	REQ_SEND (req);
1476	}	871	}
1477		872
1478	void	873	void
1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	874	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1480	ALIAS:	875	ALIAS:
1481	aio_read = REQ_READ	876	aio_read = EIO_READ
1482	aio_write = REQ_WRITE	877	aio_write = EIO_WRITE
1483	PROTOTYPE: $$$$$;$	878	PROTOTYPE: $$$$$;$
1484	PPCODE:	879	PPCODE:
1485	{	880	{
1486	STRLEN svlen;	881	STRLEN svlen;
		882	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1487	char *svptr = SvPVbyte (data, svlen);	883	char *svptr = SvPVbyte (data, svlen);
1488	UV len = SvUV (length);	884	UV len = SvUV (length);
1489		885
1490	SvUPGRADE (data, SVt_PV);
1491	SvPOK_on (data);
1492
1493	if (dataoffset < 0)	886	if (dataoffset < 0)
1494	dataoffset += svlen;	887	dataoffset += svlen;
1495		888
1496	if (dataoffset < 0 || dataoffset > svlen)	889	if (dataoffset < 0 || dataoffset > svlen)
1497	croak ("dataoffset outside of data scalar");	890	croak ("dataoffset outside of data scalar");
1498		891
1499	if (ix == REQ_WRITE)	892	if (ix == EIO_WRITE)
1500	{	893	{
1501	/* write: check length and adjust. */	894	/* write: check length and adjust. */
1502	if (!SvOK (length) || len + dataoffset > svlen)	895	if (!SvOK (length) || len + dataoffset > svlen)
1503	len = svlen - dataoffset;	896	len = svlen - dataoffset;
1504	}	897	}
1505	else	898	else
1506	{	899	{
1507	/* read: grow scalar as necessary */	900	/* read: check type and grow scalar as necessary */
		901	SvUPGRADE (data, SVt_PV);
1508	svptr = SvGROW (data, len + dataoffset + 1);	902	svptr = SvGROW (data, len + dataoffset + 1);
1509	}	903	}
1510		904
1511	if (len < 0)
1512	croak ("length must not be negative");
1513
1514	{	905	{
1515	dREQ;	906	dREQ;
1516		907
1517	req->type = ix;	908	req->type = ix;
1518	req->sv1 = newSVsv (fh);	909	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	910	req->int1 = fd;
1520	: IoOFP (sv_2io (fh)));
1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	911	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1522	req->size = len;	912	req->size = len;
1523	req->sv2 = SvREFCNT_inc (data);	913	req->sv2 = SvREFCNT_inc (data);
1524	req->ptr1 = (char *)svptr + dataoffset;	914	req->ptr2 = (char *)svptr + dataoffset;
1525	req->stroffset = dataoffset;	915	req->stroffset = dataoffset;
1526		916
1527	if (!SvREADONLY (data))	917	if (!SvREADONLY (data))
1528	{	918	{
1529	SvREADONLY_on (data);	919	SvREADONLY_on (data);
…		…
1540	PPCODE:	930	PPCODE:
1541	{	931	{
1542	SV *data;	932	SV *data;
1543	dREQ;	933	dREQ;
1544		934
1545	data = newSV (NAME_MAX);
1546	SvPOK_on (data);
1547
1548	req->type = REQ_READLINK;	935	req->type = EIO_READLINK;
1549	req->sv1 = newSVsv (path);	936	req->sv1 = newSVsv (path);
1550	req->ptr2 = SvPVbyte_nolen (req->sv1);	937	req->ptr1 = SvPVbyte_nolen (req->sv1);
1551	req->sv2 = data;
1552	req->ptr1 = SvPVbyte_nolen (data);
1553		938
1554	REQ_SEND;	939	REQ_SEND;
1555	}	940	}
1556		941
1557	void	942	void
1558	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	943	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1559	PROTOTYPE: $$$$;$	944	PROTOTYPE: $$$$;$
1560	PPCODE:	945	PPCODE:
1561	{	946	{
		947	int ifd = s_fileno_croak (in_fh , 0);
		948	int ofd = s_fileno_croak (out_fh, 1);
1562	dREQ;	949	dREQ;
1563		950
1564	req->type = REQ_SENDFILE;	951	req->type = EIO_SENDFILE;
1565	req->sv1 = newSVsv (out_fh);	952	req->sv1 = newSVsv (out_fh);
1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	953	req->int1 = ofd;
1567	req->sv2 = newSVsv (in_fh);	954	req->sv2 = newSVsv (in_fh);
1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	955	req->int2 = ifd;
1569	req->offs = SvVAL64 (in_offset);	956	req->offs = in_offset;
1570	req->size = length;	957	req->size = length;
1571		958
1572	REQ_SEND;	959	REQ_SEND;
1573	}	960	}
1574		961
1575	void	962	void
1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	963	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1577	PROTOTYPE: $$$;$	964	PROTOTYPE: $$$;$
1578	PPCODE:	965	PPCODE:
1579	{	966	{
		967	int fd = s_fileno_croak (fh, 0);
1580	dREQ;	968	dREQ;
1581		969
1582	req->type = REQ_READAHEAD;	970	req->type = EIO_READAHEAD;
1583	req->sv1 = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	972	req->int1 = fd;
1585	req->offs = SvVAL64 (offset);	973	req->offs = offset;
1586	req->size = length;	974	req->size = length;
1587		975
1588	REQ_SEND;	976	REQ_SEND;
1589	}	977	}
1590		978
1591	void	979	void
1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	980	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1593	ALIAS:	981	ALIAS:
1594	aio_stat = REQ_STAT	982	aio_stat = EIO_STAT
1595	aio_lstat = REQ_LSTAT	983	aio_lstat = EIO_LSTAT
		984	aio_statvfs = EIO_STATVFS
1596	PPCODE:	985	PPCODE:
1597	{	986	{
1598	dREQ;	987	dREQ;
1599		988
1600	req->ptr2 = malloc (sizeof (Stat_t));
1601	if (!req->ptr2)
1602	{
1603	req_destroy (req);
1604	croak ("out of memory during aio_stat statdata allocation");
1605	}
1606
1607	req->flags |= FLAG_PTR2_FREE;
1608	req->sv1 = newSVsv (fh_or_path);	989	req->sv1 = newSVsv (fh_or_path);
1609		990
1610	if (SvPOK (fh_or_path))	991	if (SvPOK (req->sv1))
1611	{	992	{
1612	req->type = ix;	993	req->type = ix;
1613	req->ptr1 = SvPVbyte_nolen (req->sv1);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1614	}	995	}
1615	else	996	else
1616	{	997	{
1617	req->type = REQ_FSTAT;	998	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	999	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1619	}	1000	}
1620		1001
1621	REQ_SEND;	1002	REQ_SEND;
1622	}	1003	}
…		…
1629		1010
1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1011	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1012	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1632	req->sv1 = newSVsv (fh_or_path);	1013	req->sv1 = newSVsv (fh_or_path);
1633		1014
1634	if (SvPOK (fh_or_path))	1015	if (SvPOK (req->sv1))
1635	{	1016	{
1636	req->type = REQ_UTIME;	1017	req->type = EIO_UTIME;
1637	req->ptr1 = SvPVbyte_nolen (req->sv1);	1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
1638	}	1019	}
1639	else	1020	else
1640	{	1021	{
1641	req->type = REQ_FUTIME;	1022	req->type = EIO_FUTIME;
1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1023	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1643	}	1024	}
1644		1025
1645	REQ_SEND;	1026	REQ_SEND;
1646	}	1027	}
…		…
1652	dREQ;	1033	dREQ;
1653		1034
1654	req->sv1 = newSVsv (fh_or_path);	1035	req->sv1 = newSVsv (fh_or_path);
1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1036	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1656		1037
1657	if (SvPOK (fh_or_path))	1038	if (SvPOK (req->sv1))
1658	{	1039	{
1659	req->type = REQ_TRUNCATE;	1040	req->type = EIO_TRUNCATE;
1660	req->ptr1 = SvPVbyte_nolen (req->sv1);	1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
1661	}	1042	}
1662	else	1043	else
1663	{	1044	{
1664	req->type = REQ_FTRUNCATE;	1045	req->type = EIO_FTRUNCATE;
1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1666	}	1047	}
1667		1048
1668	REQ_SEND;	1049	REQ_SEND;
1669	}	1050	}
1670		1051
1671	void	1052	void
1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1053	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1054	ALIAS:
		1055	aio_chmod = EIO_CHMOD
		1056	aio_mkdir = EIO_MKDIR
1673	PPCODE:	1057	PPCODE:
1674	{	1058	{
1675	dREQ;	1059	dREQ;
1676		1060
1677	req->mode = mode;	1061	req->int2 = mode;
1678	req->sv1 = newSVsv (fh_or_path);	1062	req->sv1 = newSVsv (fh_or_path);
1679		1063
1680	if (SvPOK (fh_or_path))	1064	if (SvPOK (req->sv1))
1681	{	1065	{
1682	req->type = REQ_CHMOD;	1066	req->type = ix;
1683	req->ptr1 = SvPVbyte_nolen (req->sv1);	1067	req->ptr1 = SvPVbyte_nolen (req->sv1);
1684	}	1068	}
1685	else	1069	else
1686	{	1070	{
1687	req->type = REQ_FCHMOD;	1071	req->type = EIO_FCHMOD;
1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1072	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1689	}	1073	}
1690		1074
1691	REQ_SEND;	1075	REQ_SEND;
1692	}	1076	}
…		…
1699		1083
1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1084	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1085	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1702	req->sv1 = newSVsv (fh_or_path);	1086	req->sv1 = newSVsv (fh_or_path);
1703		1087
1704	if (SvPOK (fh_or_path))	1088	if (SvPOK (req->sv1))
1705	{	1089	{
1706	req->type = REQ_CHOWN;	1090	req->type = EIO_CHOWN;
1707	req->ptr1 = SvPVbyte_nolen (req->sv1);	1091	req->ptr1 = SvPVbyte_nolen (req->sv1);
1708	}	1092	}
1709	else	1093	else
1710	{	1094	{
1711	req->type = REQ_FCHOWN;	1095	req->type = EIO_FCHOWN;
1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1096	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1713	}	1097	}
1714		1098
1715	REQ_SEND;	1099	REQ_SEND;
1716	}	1100	}
1717		1101
1718	void	1102	void
		1103	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	dREQ;
		1107
		1108	req->type = EIO_READDIR;
		1109	req->sv1 = newSVsv (pathname);
		1110	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1111	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1112
		1113	if (flags & EIO_READDIR_DENTS)
		1114	req->int1 |= EIO_READDIR_CUSTOM2;
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1120	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1720	ALIAS:	1121	ALIAS:
1721	aio_unlink = REQ_UNLINK	1122	aio_unlink = EIO_UNLINK
1722	aio_rmdir = REQ_RMDIR	1123	aio_rmdir = EIO_RMDIR
1723	aio_readdir = REQ_READDIR	1124	aio_readdir = EIO_READDIR
1724	PPCODE:	1125	PPCODE:
1725	{	1126	{
1726	dREQ;	1127	dREQ;
1727		1128
1728	req->type = ix;	1129	req->type = ix;
…		…
1731		1132
1732	REQ_SEND;	1133	REQ_SEND;
1733	}	1134	}
1734		1135
1735	void	1136	void
1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1737	PPCODE:
1738	{
1739	dREQ;
1740
1741	req->type = REQ_MKDIR;
1742	req->sv1 = newSVsv (pathname);
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	req->mode = mode;
1745
1746	REQ_SEND;
1747	}
1748
1749	void
1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1137	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1751	ALIAS:	1138	ALIAS:
1752	aio_link = REQ_LINK	1139	aio_link = EIO_LINK
1753	aio_symlink = REQ_SYMLINK	1140	aio_symlink = EIO_SYMLINK
1754	aio_rename = REQ_RENAME	1141	aio_rename = EIO_RENAME
1755	PPCODE:	1142	PPCODE:
1756	{	1143	{
1757	dREQ;	1144	dREQ;
1758		1145
1759	req->type = ix;	1146	req->type = ix;
1760	req->sv2 = newSVsv (oldpath);	1147	req->sv1 = newSVsv (oldpath);
		1148	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1149	req->sv2 = newSVsv (newpath);
1761	req->ptr2 = SvPVbyte_nolen (req->sv2);	1150	req->ptr2 = SvPVbyte_nolen (req->sv2);
1762	req->sv1 = newSVsv (newpath);
1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1764		1151
1765	REQ_SEND;	1152	REQ_SEND;
1766	}	1153	}
1767		1154
1768	void	1155	void
1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1156	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1770	PPCODE:	1157	PPCODE:
1771	{	1158	{
1772	dREQ;	1159	dREQ;
1773		1160
1774	req->type = REQ_MKNOD;	1161	req->type = EIO_MKNOD;
1775	req->sv1 = newSVsv (pathname);	1162	req->sv1 = newSVsv (pathname);
1776	req->ptr1 = SvPVbyte_nolen (req->sv1);	1163	req->ptr1 = SvPVbyte_nolen (req->sv1);
1777	req->mode = (mode_t)mode;	1164	req->int2 = (mode_t)mode;
1778	req->offs = dev;	1165	req->offs = dev;
1779		1166
1780	REQ_SEND;	1167	REQ_SEND;
1781	}	1168	}
1782		1169
1783	void	1170	void
		1171	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1172	ALIAS:
		1173	aio_mtouch = EIO_MTOUCH
		1174	aio_msync = EIO_MSYNC
		1175	PROTOTYPE: $$$$;$
		1176	PPCODE:
		1177	{
		1178	STRLEN svlen;
		1179	UV len = SvUV (length);
		1180	char *svptr = SvPVbyte (data, svlen);
		1181
		1182	if (offset < 0)
		1183	offset += svlen;
		1184
		1185	if (offset < 0 || offset > svlen)
		1186	croak ("offset outside of scalar");
		1187
		1188	if (!SvOK (length) || len + offset > svlen)
		1189	len = svlen - offset;
		1190
		1191	{
		1192	dREQ;
		1193
		1194	req->type = ix;
		1195	req->size = len;
		1196	req->sv2 = SvREFCNT_inc (data);
		1197	req->ptr2 = (char *)svptr + offset;
		1198	req->int1 = flags;
		1199
		1200	REQ_SEND;
		1201	}
		1202	}
		1203
		1204	void
1784	aio_busy (double delay, SV *callback=&PL_sv_undef)	1205	aio_busy (double delay, SV *callback=&PL_sv_undef)
1785	PPCODE:	1206	PPCODE:
1786	{	1207	{
1787	dREQ;	1208	dREQ;
1788		1209
1789	req->type = REQ_BUSY;	1210	req->type = EIO_BUSY;
1790	req->nv1 = delay < 0. ? 0. : delay;	1211	req->nv1 = delay < 0. ? 0. : delay;
1791		1212
1792	REQ_SEND;	1213	REQ_SEND;
1793	}	1214	}
1794		1215
…		…
1797	PROTOTYPE: ;$	1218	PROTOTYPE: ;$
1798	PPCODE:	1219	PPCODE:
1799	{	1220	{
1800	dREQ;	1221	dREQ;
1801		1222
1802	req->type = REQ_GROUP;	1223	req->type = EIO_GROUP;
1803		1224
1804	req_send (req);	1225	req_submit (req);
1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1226	XPUSHs (req_sv (req, aio_grp_stash));
1806	}	1227	}
1807		1228
1808	void	1229	void
1809	aio_nop (SV *callback=&PL_sv_undef)	1230	aio_nop (SV *callback=&PL_sv_undef)
		1231	ALIAS:
		1232	aio_nop = EIO_NOP
		1233	aio_sync = EIO_SYNC
1810	PPCODE:	1234	PPCODE:
1811	{	1235	{
1812	dREQ;	1236	dREQ;
1813		1237
1814	req->type = REQ_NOP;	1238	req->type = ix;
1815		1239
1816	REQ_SEND;	1240	REQ_SEND;
1817	}	1241	}
1818		1242
1819	int	1243	int
1820	aioreq_pri (int pri = 0)	1244	aioreq_pri (int pri = 0)
1821	PROTOTYPE: ;$	1245	PROTOTYPE: ;$
1822	CODE:	1246	CODE:
1823	RETVAL = next_pri - PRI_BIAS;	1247	RETVAL = next_pri;
1824	if (items > 0)	1248	if (items > 0)
1825	{	1249	{
1826	if (pri < PRI_MIN) pri = PRI_MIN;	1250	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1827	if (pri > PRI_MAX) pri = PRI_MAX;	1251	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1828	next_pri = pri + PRI_BIAS;	1252	next_pri = pri;
1829	}	1253	}
1830	OUTPUT:	1254	OUTPUT:
1831	RETVAL	1255	RETVAL
1832		1256
1833	void	1257	void
1834	aioreq_nice (int nice = 0)	1258	aioreq_nice (int nice = 0)
1835	CODE:	1259	CODE:
1836	nice = next_pri - nice;	1260	nice = next_pri - nice;
1837	if (nice < PRI_MIN) nice = PRI_MIN;	1261	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1838	if (nice > PRI_MAX) nice = PRI_MAX;	1262	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1839	next_pri = nice + PRI_BIAS;	1263	next_pri = nice;
1840		1264
1841	void	1265	void
1842	flush ()	1266	flush ()
1843	PROTOTYPE:	1267	PROTOTYPE:
1844	CODE:	1268	CODE:
1845	while (nreqs)	1269	while (eio_nreqs ())
1846	{	1270	{
1847	poll_wait ();	1271	poll_wait ();
1848	poll_cb ();	1272	poll_cb ();
1849	}	1273	}
1850		1274
…		…
1859		1283
1860	int	1284	int
1861	poll_fileno()	1285	poll_fileno()
1862	PROTOTYPE:	1286	PROTOTYPE:
1863	CODE:	1287	CODE:
1864	RETVAL = respipe [0];	1288	RETVAL = s_epipe_fd (&respipe);
1865	OUTPUT:	1289	OUTPUT:
1866	RETVAL	1290	RETVAL
1867		1291
1868	int	1292	int
1869	poll_cb(...)	1293	poll_cb(...)
…		…
1877	poll_wait()	1301	poll_wait()
1878	PROTOTYPE:	1302	PROTOTYPE:
1879	CODE:	1303	CODE:
1880	poll_wait ();	1304	poll_wait ();
1881		1305
1882	void
1883	setsig (int signum = SIGIO)
1884	PROTOTYPE: ;$
1885	CODE:
1886	{
1887	if (block_sig_level)
1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1889
1890	X_LOCK (reslock);
1891	main_tid = pthread_self ();
1892	main_sig = signum;
1893	X_UNLOCK (reslock);
1894
1895	if (main_sig && npending)
1896	pthread_kill (main_tid, main_sig);
1897	}
1898
1899	void
1900	aio_block (SV *cb)
1901	PROTOTYPE: &
1902	PPCODE:
1903	{
1904	int count;
1905
1906	block_sig ();
1907	PUSHMARK (SP);
1908	PUTBACK;
1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1910	SPAGAIN;
1911	unblock_sig ();
1912
1913	if (SvTRUE (ERRSV))
1914	croak (0);
1915
1916	XSRETURN (count);
1917	}
1918
1919	int	1306	int
1920	nreqs()	1307	nreqs()
1921	PROTOTYPE:	1308	PROTOTYPE:
1922	CODE:	1309	CODE:
1923	RETVAL = nreqs;	1310	RETVAL = eio_nreqs ();
1924	OUTPUT:	1311	OUTPUT:
1925	RETVAL	1312	RETVAL
1926		1313
1927	int	1314	int
1928	nready()	1315	nready()
1929	PROTOTYPE:	1316	PROTOTYPE:
1930	CODE:	1317	CODE:
1931	RETVAL = get_nready ();	1318	RETVAL = eio_nready ();
1932	OUTPUT:	1319	OUTPUT:
1933	RETVAL	1320	RETVAL
1934		1321
1935	int	1322	int
1936	npending()	1323	npending()
1937	PROTOTYPE:	1324	PROTOTYPE:
1938	CODE:	1325	CODE:
1939	RETVAL = get_npending ();	1326	RETVAL = eio_npending ();
1940	OUTPUT:	1327	OUTPUT:
1941	RETVAL	1328	RETVAL
1942		1329
1943	int	1330	int
1944	nthreads()	1331	nthreads()
1945	PROTOTYPE:	1332	PROTOTYPE:
1946	CODE:	1333	CODE:
1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1334	RETVAL = eio_nthreads ();
1948	RETVAL = started;
1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1950	OUTPUT:	1335	OUTPUT:
1951	RETVAL	1336	RETVAL
1952		1337
		1338	int
		1339	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1340	PROTOTYPE: $$$$
		1341	CODE:
		1342	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1343	RETVAL = posix_fadvise (fh, offset, length, advice);
		1344	#else
		1345	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1346	#endif
		1347	OUTPUT:
		1348	RETVAL
		1349
		1350	ssize_t
		1351	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1352	PROTOTYPE: $$$$
		1353	CODE:
		1354	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1355	OUTPUT:
		1356	RETVAL
		1357
		1358	void
		1359	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1360	PROTOTYPE: $$$$$;$
		1361	PPCODE:
		1362	sv_unmagic (scalar, MMAP_MAGIC);
		1363	{
		1364	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1365	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1366	if (addr == (void *)-1)
		1367	XSRETURN_NO;
		1368
		1369	/* we store the length in mg_obj, as namlen is I32 :/ */
		1370	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1371	->mg_obj = (SV *)length;
		1372
		1373	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1374	if (!(prot & PROT_WRITE))
		1375	SvREADONLY_on (scalar);
		1376
		1377	SvPVX (scalar) = (char *)addr;
		1378	SvCUR_set (scalar, length);
		1379	SvLEN_set (scalar, 0);
		1380	SvPOK_only (scalar);
		1381
		1382	XSRETURN_YES;
		1383	}
		1384
		1385	void
		1386	munmap (SV *scalar)
		1387	PROTOTYPE: $
		1388	CODE:
		1389	sv_unmagic (scalar, MMAP_MAGIC);
		1390
		1391	int
		1392	mlockall (int flags)
		1393	PROTOTYPE: $
		1394	CODE:
		1395	#if _POSIX_MEMLOCK
		1396	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1397	extern int mallopt (int, int);
		1398	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1399	#endif
		1400	mlockall (flags);
		1401	#else
		1402	RETVAL = -1;
		1403	errno = ENOSYS;
		1404	#endif
		1405	OUTPUT:
		1406	RETVAL
		1407
		1408	int
		1409	munlockall ()
		1410	PROTOTYPE:
		1411	CODE:
		1412	#if _POSIX_MEMLOCK
		1413	munlockall ();
		1414	#else
		1415	RETVAL = -1;
		1416	errno = ENOSYS;
		1417	#endif
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	void _on_next_submit (SV *cb)
		1422	CODE:
		1423	SvREFCNT_dec (on_next_submit);
		1424	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1425
1953	PROTOTYPES: DISABLE	1426	PROTOTYPES: DISABLE
1954		1427
1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1428	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1956		1429
1957	void	1430	void
1958	cancel (aio_req_ornot req)	1431	cancel (aio_req_ornot req)
1959	CODE:	1432	CODE:
1960	req_cancel (req);	1433	eio_cancel (req);
1961		1434
1962	void	1435	void
1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1436	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1964	CODE:	1437	PPCODE:
		1438	{
		1439	if (GIMME_V != G_VOID)
		1440	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1441
		1442	if (items > 1)
		1443	{
		1444	SV *cb_cv =get_cb (callback);
		1445
1965	SvREFCNT_dec (req->callback);	1446	SvREFCNT_dec (req->callback);
1966	req->callback = newSVsv (callback);	1447	req->callback = SvREFCNT_inc (cb_cv);
		1448	}
		1449	}
1967		1450
1968	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1451	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1969		1452
1970	void	1453	void
1971	add (aio_req grp, ...)	1454	add (aio_req grp, ...)
1972	PPCODE:	1455	PPCODE:
1973	{	1456	{
1974	int i;	1457	int i;
1975	aio_req req;
1976
1977	if (main_sig && !block_sig_level)
1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1979		1458
1980	if (grp->int1 == 2)	1459	if (grp->int1 == 2)
1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1460	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1982		1461
1983	for (i = 1; i < items; ++i )	1462	for (i = 1; i < items; ++i )
1984	{	1463	{
		1464	aio_req req;
		1465
1985	if (GIMME_V != G_VOID)	1466	if (GIMME_V != G_VOID)
1986	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1467	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1987		1468
1988	req = SvAIO_REQ (ST (i));	1469	req = SvAIO_REQ (ST (i));
1989		1470
1990	if (req)	1471	if (req)
1991	{	1472	eio_grp_add (grp, req);
1992	++grp->size;
1993	req->grp = grp;
1994
1995	req->grp_prev = 0;
1996	req->grp_next = grp->grp_first;
1997
1998	if (grp->grp_first)
1999	grp->grp_first->grp_prev = req;
2000
2001	grp->grp_first = req;
2002	}
2003	}	1473	}
2004	}	1474	}
2005		1475
2006	void	1476	void
2007	cancel_subs (aio_req_ornot req)	1477	cancel_subs (aio_req_ornot req)
…		…
2016	AV *av;	1486	AV *av;
2017		1487
2018	grp->errorno = errno;	1488	grp->errorno = errno;
2019		1489
2020	av = newAV ();	1490	av = newAV ();
		1491	av_extend (av, items - 1);
2021		1492
2022	for (i = 1; i < items; ++i )	1493	for (i = 1; i < items; ++i )
2023	av_push (av, newSVsv (ST (i)));	1494	av_push (av, newSVsv (ST (i)));
2024		1495
2025	SvREFCNT_dec (grp->sv1);	1496	SvREFCNT_dec (grp->sv1);
…		…
2032	grp->errorno = errorno;	1503	grp->errorno = errorno;
2033		1504
2034	void	1505	void
2035	limit (aio_req grp, int limit)	1506	limit (aio_req grp, int limit)
2036	CODE:	1507	CODE:
2037	grp->int2 = limit;	1508	eio_grp_limit (grp, limit);
2038	aio_grp_feed (grp);
2039		1509
2040	void	1510	void
2041	feed (aio_req grp, SV *callback=&PL_sv_undef)	1511	feed (aio_req grp, SV *callback=&PL_sv_undef)
2042	CODE:	1512	CODE:
2043	{	1513	{
2044	SvREFCNT_dec (grp->sv2);	1514	SvREFCNT_dec (grp->sv2);
2045	grp->sv2 = newSVsv (callback);	1515	grp->sv2 = newSVsv (callback);
		1516	grp->feed = aio_grp_feed;
2046		1517
2047	if (grp->int2 <= 0)	1518	if (grp->int2 <= 0)
2048	grp->int2 = 2;	1519	grp->int2 = 2;
2049		1520
2050	aio_grp_feed (grp);	1521	eio_grp_limit (grp, grp->int2);
2051	}	1522	}
2052		1523

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