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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
22	#include <stdlib.h>	12	#include <stdlib.h>
23	#include <errno.h>	13	#include <errno.h>
24	#include <sys/time.h>
25	#include <sys/select.h>
26	#include <sys/types.h>	14	#include <sys/types.h>
27	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
28	#include <limits.h>	17	#include <limits.h>
29	#include <unistd.h>
30	#include <fcntl.h>	18	#include <fcntl.h>
31	#include <signal.h>
32	#include <sched.h>	19	#include <sched.h>
33		20
34	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
35	# if __linux
36	# include <sys/sendfile.h>	22	# include <sys/mman.h>
37	# elif __freebsd	23	#endif
38	# include <sys/socket.h>	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
		33	#ifdef _WIN32
		34
		35	# define EIO_STRUCT_DIRENT Direntry_t
		36	# undef malloc
		37	# undef free
		38
		39	// perl overrides all those nice win32 functions
		40	# undef open
		41	# undef read
		42	# undef write
		43	# undef send
		44	# undef recv
		45	# undef stat
		46	# undef fstat
		47	# define lstat stat
		48	# undef truncate
		49	# undef ftruncate
		50	# undef open
		51	# undef close
		52	# undef unlink
		53	# undef rmdir
		54	# undef rename
		55	# undef lseek
		56
		57	# define chown(a,b,c) (errno = ENOSYS, -1)
		58	# define fchown(a,b,c) (errno = ENOSYS, -1)
		59	# define fchmod(a,b) (errno = ENOSYS, -1)
		60	# define symlink(a,b) (errno = ENOSYS, -1)
		61	# define readlink(a,b,c) (errno = ENOSYS, -1)
		62	# define mknod(a,b,c) (errno = ENOSYS, -1)
		63	# define truncate(a,b) (errno = ENOSYS, -1)
		64	# define ftruncate(fd,o) chsize ((fd), (o))
		65	# define fsync(fd) _commit (fd)
		66	# define opendir(fd) (errno = ENOSYS, 0)
		67	# define readdir(fd) (errno = ENOSYS, -1)
		68	# define closedir(fd) (errno = ENOSYS, -1)
		69	# define mkdir(a,b) mkdir (a)
		70
		71	#else
		72
39	# include <sys/uio.h>	73	# include <sys/time.h>
40	# elif __hpux
41	# include <sys/socket.h>
42	# elif __solaris /* not yet */
43	# include <sys/sendfile.h>	74	# include <sys/select.h>
		75	# include <unistd.h>
		76	# include <utime.h>
		77	# include <signal.h>
		78	# define EIO_STRUCT_DIRENT struct dirent
		79
		80	#endif
		81
		82	/* perl stupidly overrides readdir and maybe others */
		83	/* with thread-unsafe versions, imagine that :( */
		84	#undef readdir
		85	#undef opendir
		86	#undef closedir
		87
		88	#define EIO_STRUCT_STAT Stat_t
		89
		90	/* use NV for 32 bit perls as it allows larger offsets */
		91	#if IVSIZE >= 8
		92	# define VAL64 IV
		93	# define SvVAL64 SvIV
		94	# define newSVval64 newSViv
		95	#else
		96	# define VAL64 NV
		97	# define SvVAL64 SvNV
		98	# define newSVval64 newSVnv
		99	#endif
		100
		101	/*****************************************************************************/
		102
		103	#if __GNUC__ >= 3
		104	# define expect(expr,value) __builtin_expect ((expr),(value))
		105	#else
		106	# define expect(expr,value) (expr)
		107	#endif
		108
		109	#define expect_false(expr) expect ((expr) != 0, 0)
		110	#define expect_true(expr) expect ((expr) != 0, 1)
		111
		112	/*****************************************************************************/
		113
		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
44	# else	191	# else
45	# error sendfile support requested but not available	192	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
46	# endif	193	# endif
47	#endif	194	#endif
48		195	#ifndef MAP_HUGETLB
49	/* number of seconds after which idle threads exit */	196	# define MAP_HUGETLB 0
50	#define IDLE_TIMEOUT 10
51
52	/* used for struct dirent, AIX doesn't provide it */
53	#ifndef NAME_MAX
54	# define NAME_MAX 4096
55	#endif
56
57	#ifndef PTHREAD_STACK_MIN
58	/* care for broken platforms, e.g. windows */
59	# define PTHREAD_STACK_MIN 16384
60	#endif
61
62	#if __ia64
63	# define STACKSIZE 65536
64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65	# define STACKSIZE PTHREAD_STACK_MIN
66	#else
67	# define STACKSIZE 16384
68	#endif
69
70	/* wether word reads are potentially non-atomic.
71	* this is conservatice, likely most arches this runs
72	* on have atomic word read/writes.
73	*/
74	#ifndef WORDACCESS_UNSAFE
75	# if __i386 || __x86_64
76	# define WORDACCESS_UNSAFE 0
77	# else
78	# define WORDACCESS_UNSAFE 1
79	# endif	197	#endif
		198	#ifndef MAP_LOCKED
		199	# define MAP_LOCKED 0
80	#endif	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
81		210
82	/* buffer size for various temporary buffers */	211	#ifndef PAGESIZE
83	#define AIO_BUFSIZE 65536	212	# define PAGESIZE sysconf (_SC_PAGESIZE)
		213	#endif
84		214
85	#define dBUF \	215	static int req_invoke (eio_req *req);
86	char *aio_buf; \	216	#define EIO_FINISH(req) req_invoke (req)
87	LOCK (wrklock); \	217	static void req_destroy (eio_req *grp);
88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	218	#define EIO_DESTROY(req) req_destroy (req)
89	UNLOCK (wrklock); \
90	if (!aio_buf) \
91	return -1;
92
93	typedef SV SV8; /* byte-sv, used for argument-checking */
94		219
95	enum {	220	enum {
96	REQ_QUIT,	221	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
97	REQ_OPEN, REQ_CLOSE,
98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
99	REQ_SENDFILE,
100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101	REQ_FSYNC, REQ_FDATASYNC,
102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
103	REQ_MKNOD, REQ_READDIR,
104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105	REQ_GROUP, REQ_NOP,
106	REQ_BUSY,
107	};	222	};
108		223
109	#define AIO_REQ_KLASS "IO::AIO::REQ"	224	#include "libeio/eio.c"
110	#define AIO_GRP_KLASS "IO::AIO::GRP"
111		225
112	typedef struct aio_cb
113	{
114	struct aio_cb *volatile next;
115
116	SV *callback, *fh;
117	SV *sv1, *sv2;
118	void *ptr1, *ptr2;
119	off_t offs;
120	size_t size;
121	ssize_t result;
122
123	STRLEN stroffset;
124	int type;
125	int int1, int2;
126	int errorno;
127	mode_t mode; /* open */
128
129	unsigned char flags;
130	unsigned char pri;
131
132	SV *self; /* the perl counterpart of this request, if any */
133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
134	} aio_cb;
135
136	enum {
137	FLAG_CANCELLED = 0x01, /* request was cancelled */
138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140	};
141
142	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
144		228
145	enum {	229	static SV *on_next_submit;
146	PRI_MIN = -4,	230	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	231	static int max_outstanding;
148		232
149	DEFAULT_PRI = 0,	233	static s_epipe respipe;
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		234
154	#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156	static unsigned int max_poll_time = 0;
157	static unsigned int max_poll_reqs = 0;
158
159	/* calculcate time difference in ~1/AIO_TICKS of a second */
160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161	{
162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
164	}
165
166	static pthread_t main_tid;
167	static int main_sig;
168	static int block_sig_level;
169
170	void block_sig ()
171	{
172	sigset_t ss;
173
174	if (block_sig_level++)
175	return;
176
177	if (!main_sig)
178	return;
179
180	sigemptyset (&ss);
181	sigaddset (&ss, main_sig);
182	pthread_sigmask (SIG_BLOCK, &ss, 0);
183	}
184
185	void unblock_sig ()
186	{
187	sigset_t ss;
188
189	if (--block_sig_level)
190	return;
191
192	if (!main_sig)
193	return;
194
195	sigemptyset (&ss);
196	sigaddset (&ss, main_sig);
197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198	}
199
200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202	static unsigned int started, idle, wanted;
203
204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206	#else
207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208	#endif
209
210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213	/* worker threads management */
214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216	typedef struct worker {
217	/* locked by wrklock */
218	struct worker *prev, *next;
219
220	pthread_t tid;
221
222	/* locked by reslock, reqlock or wrklock */
223	aio_req req; /* currently processed request */
224	void *dbuf;
225	DIR *dirp;
226	} worker;
227
228	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230	static void worker_clear (worker *wrk)
231	{
232	if (wrk->dirp)
233	{
234	closedir (wrk->dirp);
235	wrk->dirp = 0;
236	}
237
238	if (wrk->dbuf)
239	{
240	free (wrk->dbuf);
241	wrk->dbuf = 0;
242	}
243	}
244
245	static void worker_free (worker *wrk)
246	{
247	wrk->next->prev = wrk->prev;
248	wrk->prev->next = wrk->next;
249
250	free (wrk);
251	}
252
253	static volatile unsigned int nreqs, nready, npending;
254	static volatile unsigned int max_idle = 4;
255	static volatile unsigned int max_outstanding = 0xffffffff;
256	static int respipe [2];
257
258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262	#if WORDACCESS_UNSAFE
263
264	static unsigned int get_nready ()
265	{
266	unsigned int retval;
267
268	LOCK (reqlock);
269	retval = nready;
270	UNLOCK (reqlock);
271
272	return retval;
273	}
274
275	static unsigned int get_npending ()
276	{
277	unsigned int retval;
278
279	LOCK (reslock);
280	retval = npending;
281	UNLOCK (reslock);
282
283	return retval;
284	}
285
286	static unsigned int get_nthreads ()
287	{
288	unsigned int retval;
289
290	LOCK (wrklock);
291	retval = started;
292	UNLOCK (wrklock);
293
294	return retval;
295	}
296
297	#else
298
299	# define get_nready() nready
300	# define get_npending() npending
301	# define get_nthreads() started
302
303	#endif
304
305	/*
306	* a somewhat faster data structure might be nice, but
307	* with 8 priorities this actually needs <20 insns
308	* per shift, the most expensive operation.
309	*/
310	typedef struct {
311	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312	int size;
313	} reqq;
314
315	static reqq req_queue;
316	static reqq res_queue;
317
318	int reqq_push (reqq *q, aio_req req)
319	{
320	int pri = req->pri;
321	req->next = 0;
322
323	if (q->qe[pri])
324	{
325	q->qe[pri]->next = req;
326	q->qe[pri] = req;
327	}
328	else
329	q->qe[pri] = q->qs[pri] = req;
330
331	return q->size++;
332	}
333
334	aio_req reqq_shift (reqq *q)
335	{
336	int pri;
337
338	if (!q->size)
339	return 0;
340
341	--q->size;
342
343	for (pri = NUM_PRI; pri--; )
344	{
345	aio_req req = q->qs[pri];
346
347	if (req)
348	{
349	if (!(q->qs[pri] = req->next))
350	q->qe[pri] = 0;
351
352	return req;
353	}
354	}
355
356	abort ();
357	}
358
359	static int poll_cb ();
360	static int req_invoke (aio_req req);
361	static void req_free (aio_req req);	235	static void req_destroy (aio_req req);
362	static void req_cancel (aio_req req);	236	static void req_cancel (aio_req req);
363		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
364	/* must be called at most once */	250	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	251	static SV *req_sv (aio_req req, HV *stash)
366	{	252	{
367	if (!req->self)	253	if (!req->self)
368	{	254	{
369	req->self = (SV *)newHV ();	255	req->self = (SV *)newHV ();
370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	256	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
371	}	257	}
372		258
373	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	259	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
374	}	260	}
375		261
376	static aio_req SvAIO_REQ (SV *sv)	262	static aio_req SvAIO_REQ (SV *sv)
377	{	263	{
378	MAGIC *mg;	264	MAGIC *mg;
379		265
380	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")))
381	croak ("object of class " AIO_REQ_KLASS " expected");	270	croak ("object of class IO::AIO::REQ expected");
382		271
383	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
384		273
385	return mg ? (aio_req)mg->mg_ptr : 0;	274	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	275	}
387		276
388	static void aio_grp_feed (aio_req grp)	277	static void aio_grp_feed (aio_req grp)
389	{	278	{
390	block_sig ();	279	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	280	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	281	dSP;
399		282
400	ENTER;	283	ENTER;
401	SAVETMPS;	284	SAVETMPS;
402	PUSHMARK (SP);	285	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	286	XPUSHs (req_sv (grp, aio_grp_stash));
404	PUTBACK;	287	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	288	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	289	SPAGAIN;
407	FREETMPS;	290	FREETMPS;
408	LEAVE;	291	LEAVE;
409	}
410
411	/* stop if no progress has been made */
412	if (old_len == grp->size)
413	{
414	SvREFCNT_dec (grp->sv2);
415	grp->sv2 = 0;
416	break;
417	}
418	}	292	}
419
420	unblock_sig ();
421	}	293	}
422		294
423	static void aio_grp_dec (aio_req grp)	295	static void req_submit (eio_req *req)
424	{	296	{
425	--grp->size;	297	eio_submit (req);
426		298
427	/* call feeder, if applicable */	299	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	300	{
433	block_sig ();	301	dSP;
		302	SV *cb = sv_2mortal (on_next_submit);
434		303
435	if (!req_invoke (grp))	304	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		305
442	req_free (grp);	306	PUSHMARK (SP);
443	unblock_sig ();	307	PUTBACK;
		308	call_sv (cb, G_DISCARD | G_EVAL);
444	}	309	}
445	}	310	}
446		311
447	static int req_invoke (aio_req req)	312	static int req_invoke (eio_req *req)
448	{	313	{
449	dSP;	314	dSP;
450		315
451	if (req->flags & FLAG_SV1_RO_OFF)	316	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	317	SvREADONLY_off (req->sv2);
453		318
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	319	if (!EIO_CANCELLED (req) && req->callback)
455	{	320	{
456	ENTER;	321	ENTER;
457	SAVETMPS;	322	SAVETMPS;
458	PUSHMARK (SP);	323	PUSHMARK (SP);
459	EXTEND (SP, 1);	324	EXTEND (SP, 1);
460		325
461	switch (req->type)	326	switch (req->type)
462	{	327	{
463	case REQ_READDIR:	328	case EIO_READDIR:
464	{	329	{
465	SV *rv = &PL_sv_undef;	330	SV *rv = &PL_sv_undef;
466		331
467	if (req->result >= 0)	332	if (req->result >= 0)
468	{	333	{
469	int i;	334	int i;
470	char *buf = req->ptr2;	335	char *names = (char *)req->ptr2;
		336	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471	AV *av = newAV ();	337	AV *av = newAV ();
472		338
473	av_extend (av, req->result - 1);	339	av_extend (av, req->result - 1);
474		340
475	for (i = 0; i < req->result; ++i)	341	for (i = 0; i < req->result; ++i)
476	{	342	{
477	SV *sv = newSVpv (buf, 0);	343	if (req->int1 & EIO_READDIR_DENTS)
		344	{
		345	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478		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
479	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);
480	buf += SvCUR (sv) + 1;	375	names += SvCUR (name) + 1;
		376	}
481	}	377	}
482		378
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	379	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	380	}
485		381
486	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))));
487	}	386	}
488	break;	387	break;
489		388
490	case REQ_OPEN:	389	case EIO_OPEN:
491	{	390	{
492	/* convert fd to fh */	391	/* convert fd to fh */
493	SV *fh;	392	SV *fh = &PL_sv_undef;
494		393
495	PUSHs (sv_2mortal (newSViv (req->result)));	394	if (req->result >= 0)
496	PUTBACK;	395	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	396	GV *gv = (GV *)sv_newmortal ();
498	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);
499		403
500	fh = POPs;	404	symlen = snprintf (
501	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
502	XPUSHs (fh);	416	PUSHs (fh);
503	}	417	}
504	break;	418	break;
505		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
506	case REQ_GROUP:	450	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	451	req->int1 = 2; /* mark group as finished */
508		452
509	if (req->sv1)	453	if (req->sv1)
510	{	454	{
511	int i;	455	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	459	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	460	PUSHs (*av_fetch (av, i, 0));
517	}	461	}
518	break;	462	break;
519		463
520	case REQ_NOP:	464	case EIO_NOP:
521	case REQ_BUSY:	465	case EIO_BUSY:
522	break;	466	break;
523		467
524	case REQ_READLINK:	468	case EIO_READLINK:
525	if (req->result > 0)	469	if (req->result > 0)
526	{	470	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
527	SvCUR_set (req->sv1, req->result);
528	*SvEND (req->sv1) = 0;
529	PUSHs (req->sv1);
530	}
531	break;	471	break;
532		472
533	case REQ_STAT:	473	case EIO_STAT:
534	case REQ_LSTAT:	474	case EIO_LSTAT:
535	case REQ_FSTAT:	475	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	476	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	477	PL_laststatval = req->result;
538	PL_statcache = *(Stat_t *)(req->ptr2);	478	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	479	PUSHs (sv_2mortal (newSViv (req->result)));
540	break;	480	break;
541		481
542	case REQ_READ:	482	case EIO_READ:
		483	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	484	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	485	*SvEND (req->sv2) = 0;
		486	SvPOK_only (req->sv2);
		487	SvSETMAGIC (req->sv2);
545	PUSHs (sv_2mortal (newSViv (req->result)));	488	PUSHs (sv_2mortal (newSViv (req->result)));
		489	}
546	break;	490	break;
		491
		492	case EIO_DUP2:
		493	if (req->result > 0)
		494	req->result = 0;
		495	/* FALLTHROUGH */
547		496
548	default:	497	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	498	PUSHs (sv_2mortal (newSViv (req->result)));
550	break;	499	break;
551	}	500	}
552		501
553	errno = req->errorno;	502	errno = req->errorno;
554		503
555	PUTBACK;	504	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	505	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	506	SPAGAIN;
558		507
559	FREETMPS;	508	FREETMPS;
560	LEAVE;	509	LEAVE;
		510
		511	PUTBACK;
561	}	512	}
562		513
563	if (req->grp)
564	{
565	aio_req grp = req->grp;
566
567	/* unlink request */
568	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571	if (grp->grp_first == req)
572	grp->grp_first = req->grp_next;
573
574	aio_grp_dec (grp);
575	}
576
577	return !SvTRUE (ERRSV);	514	return !!SvTRUE (ERRSV);
578	}	515	}
579		516
580	static void req_free (aio_req req)	517	static void req_destroy (aio_req req)
581	{	518	{
582	if (req->self)	519	if (req->self)
583	{	520	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	521	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	522	SvREFCNT_dec (req->self);
586	}	523	}
587		524
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	525	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	526	SvREFCNT_dec (req->sv2);
591	SvREFCNT_dec (req->callback);	527	SvREFCNT_dec (req->callback);
592		528
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	529	Safefree (req);
597	}	530	}
598		531
599	static void req_cancel_subs (aio_req grp)	532	static void req_cancel_subs (aio_req grp)
600	{	533	{
601	aio_req sub;	534	aio_req sub;
602		535
603	if (grp->type != REQ_GROUP)	536	if (grp->type != EIO_GROUP)
604	return;	537	return;
605		538
606	SvREFCNT_dec (grp->sv2);	539	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	540	grp->sv2 = 0;
608		541
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	542	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	543	}
612		544
613	static void req_cancel (aio_req req)	545	static void
		546	create_respipe (void)
614	{	547	{
615	req->flags |= FLAG_CANCELLED;	548	if (s_epipe_renew (&respipe))
616		549	croak ("IO::AIO: unable to initialize result pipe");
617	req_cancel_subs (req);
618	}	550	}
619		551
620	static void *aio_proc(void *arg);
621
622	static void start_thread (void)
623	{
624	sigset_t fullsigset, oldsigset;
625	pthread_attr_t attr;
626
627	worker *wrk = calloc (1, sizeof (worker));
628
629	if (!wrk)
630	croak ("unable to allocate worker thread data");
631
632	pthread_attr_init (&attr);
633	pthread_attr_setstacksize (&attr, STACKSIZE);
634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635	#ifdef PTHREAD_SCOPE_PROCESS
636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637	#endif
638
639	sigfillset (&fullsigset);
640
641	LOCK (wrklock);
642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
643
644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
645	{
646	wrk->prev = &wrk_first;
647	wrk->next = wrk_first.next;
648	wrk_first.next->prev = wrk;
649	wrk_first.next = wrk;
650	++started;
651	}
652	else
653	free (wrk);
654
655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
656	UNLOCK (wrklock);
657	}
658
659	static void maybe_start_thread ()
660	{
661	if (get_nthreads () >= wanted)
662	return;
663
664	/* todo: maybe use idle here, but might be less exact */
665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666	return;
667
668	start_thread ();
669	}
670
671	static void req_send (aio_req req)
672	{
673	block_sig ();
674
675	++nreqs;
676
677	LOCK (reqlock);
678	++nready;
679	reqq_push (&req_queue, req);
680	pthread_cond_signal (&reqwait);
681	UNLOCK (reqlock);
682
683	unblock_sig ();
684
685	maybe_start_thread ();
686	}
687
688	static void end_thread (void)
689	{
690	aio_req req;
691
692	Newz (0, req, 1, aio_cb);
693
694	req->type = REQ_QUIT;
695	req->pri = PRI_MAX + PRI_BIAS;
696
697	LOCK (reqlock);
698	reqq_push (&req_queue, req);
699	pthread_cond_signal (&reqwait);
700	UNLOCK (reqlock);
701
702	LOCK (wrklock);
703	--started;
704	UNLOCK (wrklock);
705	}
706
707	static void set_max_idle (int nthreads)
708	{
709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
710	max_idle = nthreads <= 0 ? 1 : nthreads;
711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712	}
713
714	static void min_parallel (int nthreads)
715	{
716	if (wanted < nthreads)
717	wanted = nthreads;
718	}
719
720	static void max_parallel (int nthreads)
721	{
722	if (wanted > nthreads)
723	wanted = nthreads;
724
725	while (started > wanted)
726	end_thread ();
727	}
728
729	static void poll_wait ()	552	static void poll_wait (void)
730	{	553	{
731	fd_set rfd;
732
733	while (nreqs)	554	while (eio_nreqs ())
734	{	555	{
735	int size;	556	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	557
		558	X_LOCK (reslock);
737	size = res_queue.size;	559	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	560	X_UNLOCK (reslock);
739		561
740	if (size)	562	if (size)
741	return;	563	return;
742		564
743	maybe_start_thread ();	565	etp_maybe_start_thread ();
744		566
745	FD_ZERO(&rfd);	567	s_epipe_wait (&respipe);
746	FD_SET(respipe [0], &rfd);
747
748	select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	568	}
750	}	569	}
751		570
752	static int poll_cb ()	571	static int poll_cb (void)
753	{	572	{
754	dSP;
755	int count = 0;
756	int maxreqs = max_poll_reqs;
757	int do_croak = 0;
758	struct timeval tv_start, tv_now;
759	aio_req req;
760
761	if (max_poll_time)
762	gettimeofday (&tv_start, 0);
763
764	block_sig ();
765
766	for (;;)	573	for (;;)
767	{	574	{
768	for (;;)	575	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		576
772	LOCK (reslock);	577	if (res > 0)
773	req = reqq_shift (&res_queue);
774
775	if (req)
776	{
777	--npending;
778
779	if (!res_queue.size)
780	{
781	/* read any signals sent by the worker threads */
782	char buf [4];
783	while (read (respipe [0], buf, 4) == 4)
784	;
785	}
786	}
787
788	UNLOCK (reslock);
789
790	if (!req)
791	break;
792
793	--nreqs;
794
795	if (req->type == REQ_GROUP && req->size)
796	{
797	req->int1 = 1; /* mark request as delayed */
798	continue;
799	}
800	else
801	{
802	if (!req_invoke (req))
803	{
804	req_free (req);
805	unblock_sig ();
806	croak (0);	578	croak (0);
807	}
808		579
809	count++;	580	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	581	return res;
811
812	req_free (req);
813
814	if (maxreqs && !--maxreqs)
815	break;
816
817	if (max_poll_time)
818	{
819	gettimeofday (&tv_now, 0);
820
821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822	break;
823	}
824	}
825
826	if (nreqs <= max_outstanding)
827	break;
828		582
829	poll_wait ();	583	poll_wait ();
830
831	++maxreqs;
832	}	584	}
833
834	unblock_sig ();
835	return count;
836	}	585	}
837		586
838	static void create_pipe ()	587	static void atfork_child (void)
839	{	588	{
840	if (pipe (respipe))	589	create_respipe ();
841	croak ("unable to initialize result pipe");
842
843	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844	croak ("cannot set result pipe to nonblocking mode");
845
846	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847	croak ("cannot set result pipe to nonblocking mode");
848	}	590	}
849		591
850	/*****************************************************************************/	592	/*****************************************************************************/
851	/* work around various missing functions */
852		593
853	#if !HAVE_PREADWRITE	594	#define MMAP_MAGIC PERL_MAGIC_ext
854	# define pread aio_pread
855	# define pwrite aio_pwrite
856		595
857	/*	596	static int
858	* make our pread/pwrite safe against themselves, but not against	597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
859	* normal read/write by using a mutex. slows down execution a lot,
860	* but that's your problem, not mine.
861	*/
862	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865	{	598	{
866	ssize_t res;	599	int old_errno = errno;
867	off_t ooffset;	600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
868
869	LOCK (preadwritelock);
870	ooffset = lseek (fd, 0, SEEK_CUR);
871	lseek (fd, offset, SEEK_SET);
872	res = read (fd, buf, count);
873	lseek (fd, ooffset, SEEK_SET);
874	UNLOCK (preadwritelock);
875
876	return res;
877	}
878
879	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
880	{
881	ssize_t res;
882	off_t ooffset;
883
884	LOCK (preadwritelock);
885	ooffset = lseek (fd, 0, SEEK_CUR);
886	lseek (fd, offset, SEEK_SET);
887	res = write (fd, buf, count);
888	lseek (fd, offset, SEEK_SET);
889	UNLOCK (preadwritelock);
890
891	return res;
892	}
893	#endif
894
895	#if !HAVE_FDATASYNC
896	# define fdatasync fsync
897	#endif
898
899	#if !HAVE_READAHEAD
900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901
902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
903	{
904	dBUF;
905
906	while (count > 0)
907	{
908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909
910	pread (fd, aio_buf, len, offset);
911	offset += len;
912	count -= len;
913	}
914
915	errno = 0;
916	}
917
918	#endif
919
920	#if !HAVE_READDIR_R
921	# define readdir_r aio_readdir_r
922
923	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926	{
927	struct dirent *e;
928	int errorno;
929
930	LOCK (readdirlock);
931
932	e = readdir (dirp);
933	errorno = errno;	601	errno = old_errno;
934		602
935	if (e)	603	mg->mg_obj = 0; /* just in case */
936	{
937	*res = ent;
938	strcpy (ent->d_name, e->d_name);
939	}
940	else
941	*res = 0;
942		604
943	UNLOCK (readdirlock);	605	SvREADONLY_off (sv);
		606	SvCUR_set (sv, 0);
		607	SvLEN_set (sv, 0);
		608	SvPVX (sv) = 0;
		609	SvOK_off (sv);
944		610
945	errno = errorno;
946	return e ? 0 : -1;
947	}
948	#endif
949
950	/* sendfile always needs emulation */
951	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
952	{
953	ssize_t res;
954
955	if (!count)
956	return 0;	611	return 0;
957
958	#if HAVE_SENDFILE
959	# if __linux
960	res = sendfile (ofd, ifd, &offset, count);
961
962	# elif __freebsd
963	/*
964	* Of course, the freebsd sendfile is a dire hack with no thoughts
965	* wasted on making it similar to other I/O functions.
966	*/
967	{
968	off_t sbytes;
969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970
971	if (res < 0 && sbytes)
972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
973	res = sbytes;
974	}
975
976	# elif __hpux
977	res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979	# elif __solaris
980	{
981	struct sendfilevec vec;
982	size_t sbytes;
983
984	vec.sfv_fd = ifd;
985	vec.sfv_flag = 0;
986	vec.sfv_off = offset;
987	vec.sfv_len = count;
988
989	res = sendfilev (ofd, &vec, 1, &sbytes);
990
991	if (res < 0 && sbytes)
992	res = sbytes;
993	}
994
995	# endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000
1001	if (res < 0
1002	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003	#if __solaris
1004	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005	#endif
1006	)
1007	)
1008	{
1009	/* emulate sendfile. this is a major pain in the ass */
1010	dBUF;
1011
1012	res = 0;
1013
1014	while (count)
1015	{
1016	ssize_t cnt;
1017
1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019
1020	if (cnt <= 0)
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025
1026	cnt = write (ofd, aio_buf, cnt);
1027
1028	if (cnt <= 0)
1029	{
1030	if (cnt && !res) res = -1;
1031	break;
1032	}
1033
1034	offset += cnt;
1035	res += cnt;
1036	count -= cnt;
1037	}
1038	}
1039
1040	return res;
1041	}	612	}
1042		613
1043	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
1044	static void scandir_ (aio_req req, worker *self)	615	0, 0, 0, 0, mmap_free
1045	{	616	};
1046	DIR *dirp;
1047	union
1048	{
1049	struct dirent d;
1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051	} *u;
1052	struct dirent *entp;
1053	char *name, *names;
1054	int memlen = 4096;
1055	int memofs = 0;
1056	int res = 0;
1057	int errorno;
1058
1059	LOCK (wrklock);
1060	self->dirp = dirp = opendir (req->ptr1);
1061	self->dbuf = u = malloc (sizeof (*u));
1062	req->flags |= FLAG_PTR2_FREE;
1063	req->ptr2 = names = malloc (memlen);
1064	UNLOCK (wrklock);
1065
1066	if (dirp && u && names)
1067	for (;;)
1068	{
1069	errno = 0;
1070	readdir_r (dirp, &u->d, &entp);
1071
1072	if (!entp)
1073	break;
1074
1075	name = entp->d_name;
1076
1077	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078	{
1079	int len = strlen (name) + 1;
1080
1081	res++;
1082
1083	while (memofs + len > memlen)
1084	{
1085	memlen *= 2;
1086	LOCK (wrklock);
1087	req->ptr2 = names = realloc (names, memlen);
1088	UNLOCK (wrklock);
1089
1090	if (!names)
1091	break;
1092	}
1093
1094	memcpy (names + memofs, name, len);
1095	memofs += len;
1096	}
1097	}
1098
1099	if (errno)
1100	res = -1;
1101
1102	req->result = res;
1103	}
1104		617
1105	/*****************************************************************************/	618	/*****************************************************************************/
1106		619
1107	static void *aio_proc (void *thr_arg)	620	static SV *
		621	get_cb (SV *cb_sv)
1108	{	622	{
1109	aio_req req;	623	SvGETMAGIC (cb_sv);
1110	struct timespec ts;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1111	worker *self = (worker *)thr_arg;
1112
1113	/* try to distribute timeouts somewhat evenly */
1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115	* (1000000000UL / 1024UL);
1116
1117	for (;;)
1118	{
1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121	LOCK (reqlock);
1122
1123	for (;;)
1124	{
1125	self->req = req = reqq_shift (&req_queue);
1126
1127	if (req)
1128	break;
1129
1130	++idle;
1131
1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133	== ETIMEDOUT)
1134	{
1135	if (idle > max_idle)
1136	{
1137	--idle;
1138	UNLOCK (reqlock);
1139	LOCK (wrklock);
1140	--started;
1141	UNLOCK (wrklock);
1142	goto quit;
1143	}
1144
1145	/* we are allowed to idle, so do so without any timeout */
1146	pthread_cond_wait (&reqwait, &reqlock);
1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148	}
1149
1150	--idle;
1151	}
1152
1153	--nready;
1154
1155	UNLOCK (reqlock);
1156
1157	errno = 0; /* strictly unnecessary */
1158
1159	if (!(req->flags & FLAG_CANCELLED))
1160	switch (req->type)
1161	{
1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173	case REQ_CLOSE: req->result = close (req->int1); break;
1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1179	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1180	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1181	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1182
1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
1185	case REQ_READDIR: scandir_ (req, self); break;
1186
1187	case REQ_BUSY:
1188	{
1189	struct timeval tv;
1190
1191	tv.tv_sec = req->int1;
1192	tv.tv_usec = req->int2;
1193
1194	req->result = select (0, 0, 0, 0, &tv);
1195	}
1196
1197	case REQ_GROUP:
1198	case REQ_NOP:
1199	break;
1200
1201	case REQ_QUIT:
1202	goto quit;
1203
1204	default:
1205	req->result = ENOSYS;
1206	break;
1207	}
1208
1209	req->errorno = errno;
1210
1211	LOCK (reslock);
1212
1213	++npending;
1214
1215	if (!reqq_push (&res_queue, req))
1216	{
1217	/* write a dummy byte to the pipe so fh becomes ready */
1218	write (respipe [1], &respipe, 1);
1219
1220	/* optionally signal the main thread asynchronously */
1221	if (main_sig)
1222	pthread_kill (main_tid, main_sig);
1223	}
1224
1225	self->req = 0;
1226	worker_clear (self);
1227
1228	UNLOCK (reslock);
1229	}
1230
1231	quit:
1232	LOCK (wrklock);
1233	worker_free (self);
1234	UNLOCK (wrklock);
1235
1236	return 0;
1237	}
1238
1239	/*****************************************************************************/
1240
1241	static void atfork_prepare (void)
1242	{
1243	LOCK (wrklock);
1244	LOCK (reqlock);
1245	LOCK (reslock);
1246	#if !HAVE_PREADWRITE
1247	LOCK (preadwritelock);
1248	#endif
1249	#if !HAVE_READDIR_R
1250	LOCK (readdirlock);
1251	#endif
1252	}
1253
1254	static void atfork_parent (void)
1255	{
1256	#if !HAVE_READDIR_R
1257	UNLOCK (readdirlock);
1258	#endif
1259	#if !HAVE_PREADWRITE
1260	UNLOCK (preadwritelock);
1261	#endif
1262	UNLOCK (reslock);
1263	UNLOCK (reqlock);
1264	UNLOCK (wrklock);
1265	}
1266
1267	static void atfork_child (void)
1268	{
1269	aio_req prv;
1270
1271	while (prv = reqq_shift (&req_queue))
1272	req_free (prv);
1273
1274	while (prv = reqq_shift (&res_queue))
1275	req_free (prv);
1276
1277	while (wrk_first.next != &wrk_first)
1278	{
1279	worker *wrk = wrk_first.next;
1280
1281	if (wrk->req)
1282	req_free (wrk->req);
1283
1284	worker_clear (wrk);
1285	worker_free (wrk);
1286	}
1287
1288	started = 0;
1289	idle = 0;
1290	nreqs = 0;
1291	nready = 0;
1292	npending = 0;
1293
1294	close (respipe [0]);
1295	close (respipe [1]);
1296	create_pipe ();
1297
1298	atfork_parent ();
1299	}	625	}
1300		626
1301	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
1302	aio_req req; \	629	aio_req req; \
1303	int req_pri = next_pri; \	630	int req_pri = next_pri; \
1304	next_pri = DEFAULT_PRI + PRI_BIAS; \	631	next_pri = EIO_PRI_DEFAULT; \
1305	\	632	\
1306	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
1307	croak ("callback must be undef or of reference type"); \
1308	\	634	\
1309	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
1310	if (!req) \	636	if (!req) \
1311	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
1312	\	638	\
1313	req->callback = newSVsv (callback); \	639	req->callback = SvREFCNT_inc (cb_cv); \
1314	req->pri = req_pri	640	req->pri = req_pri
1315		641
1316	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
1317	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
1318	\	646	\
1319	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
1320	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
1321		649
1322	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
1323		651
1324	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
1325		653
1326	BOOT:	654	BOOT:
1327	{	655	{
		656	static const struct {
		657	const char *name;
		658	IV iv;
		659	} *civ, const_iv[] = {
		660	# define const_niv(name, value) { # name, (IV) value },
		661	# define const_iv(name) { # name, (IV) name },
		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)
		669	#ifndef _WIN32
		670	const_iv (S_IFIFO)
		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)
		678
		679	const_iv (ST_RDONLY)
		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)
		691
		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
1328	HV *stash = gv_stashpv ("IO::AIO", 1);	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);
1329		741
1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	742	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	743	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1332	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1333	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1334	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1335	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1336	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1337		744
		745	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		746
1338	create_pipe ();	747	create_respipe ();
1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	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);
1340	}	754	}
1341		755
1342	void	756	void
1343	max_poll_reqs (int nreqs)	757	max_poll_reqs (int nreqs)
1344	PROTOTYPE: $	758	PROTOTYPE: $
1345	CODE:	759	CODE:
1346	max_poll_reqs = nreqs;	760	eio_set_max_poll_reqs (nreqs);
1347		761
1348	void	762	void
1349	max_poll_time (double nseconds)	763	max_poll_time (double nseconds)
1350	PROTOTYPE: $	764	PROTOTYPE: $
1351	CODE:	765	CODE:
1352	max_poll_time = nseconds * AIO_TICKS;	766	eio_set_max_poll_time (nseconds);
1353		767
1354	void	768	void
1355	min_parallel (int nthreads)	769	min_parallel (int nthreads)
1356	PROTOTYPE: $	770	PROTOTYPE: $
		771	CODE:
		772	eio_set_min_parallel (nthreads);
1357		773
1358	void	774	void
1359	max_parallel (int nthreads)	775	max_parallel (int nthreads)
1360	PROTOTYPE: $	776	PROTOTYPE: $
		777	CODE:
		778	eio_set_max_parallel (nthreads);
1361		779
1362	void	780	void
1363	max_idle (int nthreads)	781	max_idle (int nthreads)
1364	PROTOTYPE: $	782	PROTOTYPE: $
1365	CODE:	783	CODE:
1366	set_max_idle (nthreads);	784	eio_set_max_idle (nthreads);
1367		785
1368	int	786	void
1369	max_outstanding (int maxreqs)	787	max_outstanding (int maxreqs)
1370	PROTOTYPE: $	788	PROTOTYPE: $
1371	CODE:	789	CODE:
1372	RETVAL = max_outstanding;
1373	max_outstanding = maxreqs;	790	max_outstanding = maxreqs;
1374	OUTPUT:
1375	RETVAL
1376		791
1377	void	792	void
1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	793	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1379	SV8 * pathname
1380	int flags
1381	int mode
1382	SV * callback
1383	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
1384	PPCODE:	795	PPCODE:
1385	{	796	{
1386	dREQ;	797	dREQ;
1387		798
1388	req->type = REQ_OPEN;	799	req->type = EIO_OPEN;
1389	req->sv1 = newSVsv (pathname);	800	req->sv1 = newSVsv (pathname);
1390	req->ptr1 = SvPVbyte_nolen (req->sv1);	801	req->ptr1 = SvPVbyte_nolen (req->sv1);
1391	req->int1 = flags;	802	req->int1 = flags;
1392	req->mode = mode;	803	req->int2 = mode;
1393		804
1394	REQ_SEND;	805	REQ_SEND;
1395	}	806	}
1396		807
1397	void	808	void
1398	aio_close (fh,callback=&PL_sv_undef)	809	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1399	SV * fh
1400	SV * callback
1401	PROTOTYPE: $;$	810	PROTOTYPE: $;$
1402	ALIAS:	811	ALIAS:
1403	aio_close = REQ_CLOSE
1404	aio_fsync = REQ_FSYNC	812	aio_fsync = EIO_FSYNC
1405	aio_fdatasync = REQ_FDATASYNC	813	aio_fdatasync = EIO_FDATASYNC
1406	PPCODE:	814	PPCODE:
1407	{	815	{
		816	int fd = s_fileno_croak (fh, 0);
1408	dREQ;	817	dREQ;
1409		818
1410	req->type = ix;	819	req->type = ix;
1411	req->fh = newSVsv (fh);	820	req->sv1 = newSVsv (fh);
1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	821	req->int1 = fd;
1413		822
1414	REQ_SEND (req);	823	REQ_SEND (req);
1415	}	824	}
1416		825
1417	void	826	void
		827	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		828	PROTOTYPE: $$$$;$
		829	PPCODE:
		830	{
		831	int fd = s_fileno_croak (fh, 0);
		832	dREQ;
		833
		834	req->type = EIO_SYNC_FILE_RANGE;
		835	req->sv1 = newSVsv (fh);
		836	req->int1 = fd;
		837	req->offs = offset;
		838	req->size = nbytes;
		839	req->int2 = flags;
		840
		841	REQ_SEND (req);
		842	}
		843
		844	void
		845	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		846	PROTOTYPE: $;$
		847	PPCODE:
		848	{
		849	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		850	int fd = s_fileno_croak (fh, 0);
		851	dREQ;
		852
		853	if (close_pipe < 0)
		854	{
		855	int pipefd [2];
		856
		857	if (pipe (pipefd) < 0
		858	|| close (pipefd [1]) < 0
		859	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		860	abort (); /*D*/
		861
		862	close_pipe = pipefd [0];
		863	}
		864
		865	req->type = EIO_DUP2;
		866	req->int1 = close_pipe;
		867	req->sv2 = newSVsv (fh);
		868	req->int2 = fd;
		869
		870	REQ_SEND (req);
		871	}
		872
		873	void
1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	874	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1419	SV * fh
1420	UV offset
1421	UV length
1422	SV8 * data
1423	UV dataoffset
1424	SV * callback
1425	ALIAS:	875	ALIAS:
1426	aio_read = REQ_READ	876	aio_read = EIO_READ
1427	aio_write = REQ_WRITE	877	aio_write = EIO_WRITE
1428	PROTOTYPE: $$$$$;$	878	PROTOTYPE: $$$$$;$
1429	PPCODE:	879	PPCODE:
1430	{	880	{
1431	STRLEN svlen;	881	STRLEN svlen;
		882	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1432	char *svptr = SvPVbyte (data, svlen);	883	char *svptr = SvPVbyte (data, svlen);
1433		884	UV len = SvUV (length);
1434	SvUPGRADE (data, SVt_PV);
1435	SvPOK_on (data);
1436		885
1437	if (dataoffset < 0)	886	if (dataoffset < 0)
1438	dataoffset += svlen;	887	dataoffset += svlen;
1439		888
1440	if (dataoffset < 0 || dataoffset > svlen)	889	if (dataoffset < 0 || dataoffset > svlen)
1441	croak ("data offset outside of string");	890	croak ("dataoffset outside of data scalar");
1442		891
1443	if (ix == REQ_WRITE)	892	if (ix == EIO_WRITE)
1444	{	893	{
1445	/* write: check length and adjust. */	894	/* write: check length and adjust. */
1446	if (length < 0 || length + dataoffset > svlen)	895	if (!SvOK (length) || len + dataoffset > svlen)
1447	length = svlen - dataoffset;	896	len = svlen - dataoffset;
1448	}	897	}
1449	else	898	else
1450	{	899	{
1451	/* read: grow scalar as necessary */	900	/* read: check type and grow scalar as necessary */
		901	SvUPGRADE (data, SVt_PV);
1452	svptr = SvGROW (data, length + dataoffset + 1);	902	svptr = SvGROW (data, len + dataoffset + 1);
1453	}	903	}
1454
1455	if (length < 0)
1456	croak ("length must not be negative");
1457		904
1458	{	905	{
1459	dREQ;	906	dREQ;
1460		907
1461	req->type = ix;	908	req->type = ix;
1462	req->fh = newSVsv (fh);	909	req->sv1 = newSVsv (fh);
1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	910	req->int1 = fd;
1464	: IoOFP (sv_2io (fh)));	911	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1465	req->offs = offset;
1466	req->size = length;	912	req->size = len;
1467	req->sv1 = SvREFCNT_inc (data);	913	req->sv2 = SvREFCNT_inc (data);
1468	req->ptr1 = (char *)svptr + dataoffset;	914	req->ptr2 = (char *)svptr + dataoffset;
1469	req->stroffset = dataoffset;	915	req->stroffset = dataoffset;
1470		916
1471	if (!SvREADONLY (data))	917	if (!SvREADONLY (data))
1472	{	918	{
1473	SvREADONLY_on (data);	919	SvREADONLY_on (data);
1474	req->flags |= FLAG_SV1_RO_OFF;	920	req->flags |= FLAG_SV2_RO_OFF;
1475	}	921	}
1476		922
1477	REQ_SEND;	923	REQ_SEND;
1478	}	924	}
1479	}	925	}
1480		926
1481	void	927	void
1482	aio_readlink (path,callback=&PL_sv_undef)	928	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1483	SV8 * path
1484	SV * callback
1485	PROTOTYPE: $$;$	929	PROTOTYPE: $$;$
1486	PPCODE:	930	PPCODE:
1487	{	931	{
1488	SV *data;	932	SV *data;
1489	dREQ;	933	dREQ;
1490		934
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	935	req->type = EIO_READLINK;
1495	req->fh = newSVsv (path);	936	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->fh);	937	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->sv1 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		938
1500	REQ_SEND;	939	REQ_SEND;
1501	}	940	}
1502		941
1503	void	942	void
1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	943	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1505	SV * out_fh
1506	SV * in_fh
1507	UV in_offset
1508	UV length
1509	SV * callback
1510	PROTOTYPE: $$$$;$	944	PROTOTYPE: $$$$;$
1511	PPCODE:	945	PPCODE:
1512	{	946	{
		947	int ifd = s_fileno_croak (in_fh , 0);
		948	int ofd = s_fileno_croak (out_fh, 1);
1513	dREQ;	949	dREQ;
1514		950
1515	req->type = REQ_SENDFILE;	951	req->type = EIO_SENDFILE;
1516	req->fh = newSVsv (out_fh);	952	req->sv1 = newSVsv (out_fh);
1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	953	req->int1 = ofd;
1518	req->sv2 = newSVsv (in_fh);	954	req->sv2 = newSVsv (in_fh);
1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	955	req->int2 = ifd;
1520	req->offs = in_offset;	956	req->offs = in_offset;
1521	req->size = length;	957	req->size = length;
1522		958
1523	REQ_SEND;	959	REQ_SEND;
1524	}	960	}
1525		961
1526	void	962	void
1527	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	963	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1528	SV * fh
1529	UV offset
1530	IV length
1531	SV * callback
1532	PROTOTYPE: $$$;$	964	PROTOTYPE: $$$;$
1533	PPCODE:	965	PPCODE:
1534	{	966	{
		967	int fd = s_fileno_croak (fh, 0);
1535	dREQ;	968	dREQ;
1536		969
1537	req->type = REQ_READAHEAD;	970	req->type = EIO_READAHEAD;
1538	req->fh = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	972	req->int1 = fd;
1540	req->offs = offset;	973	req->offs = offset;
1541	req->size = length;	974	req->size = length;
1542		975
1543	REQ_SEND;	976	REQ_SEND;
1544	}	977	}
1545		978
1546	void	979	void
1547	aio_stat (fh_or_path,callback=&PL_sv_undef)	980	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1548	SV8 * fh_or_path
1549	SV * callback
1550	ALIAS:	981	ALIAS:
1551	aio_stat = REQ_STAT	982	aio_stat = EIO_STAT
1552	aio_lstat = REQ_LSTAT	983	aio_lstat = EIO_LSTAT
		984	aio_statvfs = EIO_STATVFS
1553	PPCODE:	985	PPCODE:
1554	{	986	{
1555	dREQ;	987	dREQ;
1556		988
1557	req->ptr2 = malloc (sizeof (Stat_t));	989	req->sv1 = newSVsv (fh_or_path);
1558	if (!req->ptr2)
1559	{
1560	req_free (req);
1561	croak ("out of memory during aio_stat statdata allocation");
1562	}
1563		990
1564	req->flags |= FLAG_PTR2_FREE;	991	if (SvPOK (req->sv1))
1565
1566	if (SvPOK (fh_or_path))
1567	{	992	{
1568	req->type = ix;	993	req->type = ix;
1569	req->sv1 = newSVsv (fh_or_path);
1570	req->ptr1 = SvPVbyte_nolen (req->sv1);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1571	}	995	}
1572	else	996	else
1573	{	997	{
1574	req->type = REQ_FSTAT;	998	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1575	req->fh = newSVsv (fh_or_path);
1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	999	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1577	}	1000	}
1578		1001
1579	REQ_SEND;	1002	REQ_SEND;
1580	}	1003	}
1581		1004
1582	void	1005	void
		1006	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1007	PPCODE:
		1008	{
		1009	dREQ;
		1010
		1011	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1012	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1013	req->sv1 = newSVsv (fh_or_path);
		1014
		1015	if (SvPOK (req->sv1))
		1016	{
		1017	req->type = EIO_UTIME;
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	}
		1020	else
		1021	{
		1022	req->type = EIO_FUTIME;
		1023	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1024	}
		1025
		1026	REQ_SEND;
		1027	}
		1028
		1029	void
		1030	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	dREQ;
		1034
		1035	req->sv1 = newSVsv (fh_or_path);
		1036	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1037
		1038	if (SvPOK (req->sv1))
		1039	{
		1040	req->type = EIO_TRUNCATE;
		1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1042	}
		1043	else
		1044	{
		1045	req->type = EIO_FTRUNCATE;
		1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1047	}
		1048
		1049	REQ_SEND;
		1050	}
		1051
		1052	void
		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
		1057	PPCODE:
		1058	{
		1059	dREQ;
		1060
		1061	req->int2 = mode;
		1062	req->sv1 = newSVsv (fh_or_path);
		1063
		1064	if (SvPOK (req->sv1))
		1065	{
		1066	req->type = ix;
		1067	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1068	}
		1069	else
		1070	{
		1071	req->type = EIO_FCHMOD;
		1072	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1073	}
		1074
		1075	REQ_SEND;
		1076	}
		1077
		1078	void
		1079	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1080	PPCODE:
		1081	{
		1082	dREQ;
		1083
		1084	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1085	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1086	req->sv1 = newSVsv (fh_or_path);
		1087
		1088	if (SvPOK (req->sv1))
		1089	{
		1090	req->type = EIO_CHOWN;
		1091	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1092	}
		1093	else
		1094	{
		1095	req->type = EIO_FCHOWN;
		1096	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1097	}
		1098
		1099	REQ_SEND;
		1100	}
		1101
		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
1583	aio_unlink (pathname,callback=&PL_sv_undef)	1120	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	SV * callback
1586	ALIAS:	1121	ALIAS:
1587	aio_unlink = REQ_UNLINK	1122	aio_unlink = EIO_UNLINK
1588	aio_rmdir = REQ_RMDIR	1123	aio_rmdir = EIO_RMDIR
1589	aio_readdir = REQ_READDIR	1124	aio_readdir = EIO_READDIR
1590	PPCODE:	1125	PPCODE:
1591	{	1126	{
1592	dREQ;	1127	dREQ;
1593		1128
1594	req->type = ix;	1129	req->type = ix;
…		…
1597		1132
1598	REQ_SEND;	1133	REQ_SEND;
1599	}	1134	}
1600		1135
1601	void	1136	void
1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
1603	SV8 * pathname
1604	UV mode
1605	SV * callback
1606	PPCODE:
1607	{
1608	dREQ;
1609
1610	req->type = REQ_MKDIR;
1611	req->sv1 = newSVsv (pathname);
1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
1613	req->mode = mode;
1614
1615	REQ_SEND;
1616	}
1617
1618	void
1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1137	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1620	SV8 * oldpath
1621	SV8 * newpath
1622	SV * callback
1623	ALIAS:	1138	ALIAS:
1624	aio_link = REQ_LINK	1139	aio_link = EIO_LINK
1625	aio_symlink = REQ_SYMLINK	1140	aio_symlink = EIO_SYMLINK
1626	aio_rename = REQ_RENAME	1141	aio_rename = EIO_RENAME
1627	PPCODE:	1142	PPCODE:
1628	{	1143	{
1629	dREQ;	1144	dREQ;
1630		1145
1631	req->type = ix;	1146	req->type = ix;
1632	req->fh = newSVsv (oldpath);	1147	req->sv1 = newSVsv (oldpath);
1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1634	req->sv1 = newSVsv (newpath);
1635	req->ptr1 = SvPVbyte_nolen (req->sv1);	1148	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1149	req->sv2 = newSVsv (newpath);
		1150	req->ptr2 = SvPVbyte_nolen (req->sv2);
1636		1151
1637	REQ_SEND;	1152	REQ_SEND;
1638	}	1153	}
1639		1154
1640	void	1155	void
1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1156	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1642	SV8 * pathname
1643	UV mode
1644	UV dev
1645	SV * callback
1646	PPCODE:	1157	PPCODE:
1647	{	1158	{
1648	dREQ;	1159	dREQ;
1649		1160
1650	req->type = REQ_MKNOD;	1161	req->type = EIO_MKNOD;
1651	req->sv1 = newSVsv (pathname);	1162	req->sv1 = newSVsv (pathname);
1652	req->ptr1 = SvPVbyte_nolen (req->sv1);	1163	req->ptr1 = SvPVbyte_nolen (req->sv1);
1653	req->mode = (mode_t)mode;	1164	req->int2 = (mode_t)mode;
1654	req->offs = dev;	1165	req->offs = dev;
1655		1166
1656	REQ_SEND;	1167	REQ_SEND;
1657	}	1168	}
1658		1169
1659	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
1660	aio_busy (delay,callback=&PL_sv_undef)	1205	aio_busy (double delay, SV *callback=&PL_sv_undef)
1661	double delay
1662	SV * callback
1663	PPCODE:	1206	PPCODE:
1664	{	1207	{
1665	dREQ;	1208	dREQ;
1666		1209
1667	req->type = REQ_BUSY;	1210	req->type = EIO_BUSY;
1668	req->int1 = delay < 0. ? 0 : delay;	1211	req->nv1 = delay < 0. ? 0. : delay;
1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1670		1212
1671	REQ_SEND;	1213	REQ_SEND;
1672	}	1214	}
1673		1215
1674	void	1216	void
1675	aio_group (callback=&PL_sv_undef)	1217	aio_group (SV *callback=&PL_sv_undef)
1676	SV * callback
1677	PROTOTYPE: ;$	1218	PROTOTYPE: ;$
1678	PPCODE:	1219	PPCODE:
1679	{	1220	{
1680	dREQ;	1221	dREQ;
1681		1222
1682	req->type = REQ_GROUP;	1223	req->type = EIO_GROUP;
1683		1224
1684	req_send (req);	1225	req_submit (req);
1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1226	XPUSHs (req_sv (req, aio_grp_stash));
1686	}	1227	}
1687		1228
1688	void	1229	void
1689	aio_nop (callback=&PL_sv_undef)	1230	aio_nop (SV *callback=&PL_sv_undef)
1690	SV * callback	1231	ALIAS:
		1232	aio_nop = EIO_NOP
		1233	aio_sync = EIO_SYNC
1691	PPCODE:	1234	PPCODE:
1692	{	1235	{
1693	dREQ;	1236	dREQ;
1694		1237
1695	req->type = REQ_NOP;	1238	req->type = ix;
1696		1239
1697	REQ_SEND;	1240	REQ_SEND;
1698	}	1241	}
1699		1242
1700	int	1243	int
1701	aioreq_pri (int pri = 0)	1244	aioreq_pri (int pri = 0)
1702	PROTOTYPE: ;$	1245	PROTOTYPE: ;$
1703	CODE:	1246	CODE:
1704	RETVAL = next_pri - PRI_BIAS;	1247	RETVAL = next_pri;
1705	if (items > 0)	1248	if (items > 0)
1706	{	1249	{
1707	if (pri < PRI_MIN) pri = PRI_MIN;	1250	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1708	if (pri > PRI_MAX) pri = PRI_MAX;	1251	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1709	next_pri = pri + PRI_BIAS;	1252	next_pri = pri;
1710	}	1253	}
1711	OUTPUT:	1254	OUTPUT:
1712	RETVAL	1255	RETVAL
1713		1256
1714	void	1257	void
1715	aioreq_nice (int nice = 0)	1258	aioreq_nice (int nice = 0)
1716	CODE:	1259	CODE:
1717	nice = next_pri - nice;	1260	nice = next_pri - nice;
1718	if (nice < PRI_MIN) nice = PRI_MIN;	1261	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1719	if (nice > PRI_MAX) nice = PRI_MAX;	1262	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1720	next_pri = nice + PRI_BIAS;	1263	next_pri = nice;
1721		1264
1722	void	1265	void
1723	flush ()	1266	flush ()
1724	PROTOTYPE:	1267	PROTOTYPE:
1725	CODE:	1268	CODE:
1726	while (nreqs)	1269	while (eio_nreqs ())
1727	{	1270	{
1728	poll_wait ();	1271	poll_wait ();
1729	poll_cb ();	1272	poll_cb ();
1730	}	1273	}
1731		1274
…		…
1740		1283
1741	int	1284	int
1742	poll_fileno()	1285	poll_fileno()
1743	PROTOTYPE:	1286	PROTOTYPE:
1744	CODE:	1287	CODE:
1745	RETVAL = respipe [0];	1288	RETVAL = s_epipe_fd (&respipe);
1746	OUTPUT:	1289	OUTPUT:
1747	RETVAL	1290	RETVAL
1748		1291
1749	int	1292	int
1750	poll_cb(...)	1293	poll_cb(...)
…		…
1758	poll_wait()	1301	poll_wait()
1759	PROTOTYPE:	1302	PROTOTYPE:
1760	CODE:	1303	CODE:
1761	poll_wait ();	1304	poll_wait ();
1762		1305
1763	void
1764	setsig (int signum = SIGIO)
1765	PROTOTYPE: ;$
1766	CODE:
1767	{
1768	if (block_sig_level)
1769	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1770
1771	LOCK (reslock);
1772	main_tid = pthread_self ();
1773	main_sig = signum;
1774	UNLOCK (reslock);
1775
1776	if (main_sig && npending)
1777	pthread_kill (main_tid, main_sig);
1778	}
1779
1780	void
1781	aio_block (SV *cb)
1782	PROTOTYPE: &
1783	PPCODE:
1784	{
1785	int count;
1786
1787	block_sig ();
1788	PUSHMARK (SP);
1789	PUTBACK;
1790	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1791	SPAGAIN;
1792	unblock_sig ();
1793
1794	if (SvTRUE (ERRSV))
1795	croak (0);
1796
1797	XSRETURN (count);
1798	}
1799
1800	int	1306	int
1801	nreqs()	1307	nreqs()
1802	PROTOTYPE:	1308	PROTOTYPE:
1803	CODE:	1309	CODE:
1804	RETVAL = nreqs;	1310	RETVAL = eio_nreqs ();
1805	OUTPUT:	1311	OUTPUT:
1806	RETVAL	1312	RETVAL
1807		1313
1808	int	1314	int
1809	nready()	1315	nready()
1810	PROTOTYPE:	1316	PROTOTYPE:
1811	CODE:	1317	CODE:
1812	RETVAL = get_nready ();	1318	RETVAL = eio_nready ();
1813	OUTPUT:	1319	OUTPUT:
1814	RETVAL	1320	RETVAL
1815		1321
1816	int	1322	int
1817	npending()	1323	npending()
1818	PROTOTYPE:	1324	PROTOTYPE:
1819	CODE:	1325	CODE:
1820	RETVAL = get_npending ();	1326	RETVAL = eio_npending ();
1821	OUTPUT:	1327	OUTPUT:
1822	RETVAL	1328	RETVAL
1823		1329
1824	int	1330	int
1825	nthreads()	1331	nthreads()
1826	PROTOTYPE:	1332	PROTOTYPE:
1827	CODE:	1333	CODE:
1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1334	RETVAL = eio_nthreads ();
1829	RETVAL = started;
1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1831	OUTPUT:	1335	OUTPUT:
1832	RETVAL	1336	RETVAL
1833		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
1834	PROTOTYPES: DISABLE	1426	PROTOTYPES: DISABLE
1835		1427
1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1428	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1837		1429
1838	void	1430	void
1839	cancel (aio_req_ornot req)	1431	cancel (aio_req_ornot req)
1840	CODE:	1432	CODE:
1841	req_cancel (req);	1433	eio_cancel (req);
1842		1434
1843	void	1435	void
1844	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1436	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1845	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
1846	SvREFCNT_dec (req->callback);	1446	SvREFCNT_dec (req->callback);
1847	req->callback = newSVsv (callback);	1447	req->callback = SvREFCNT_inc (cb_cv);
		1448	}
		1449	}
1848		1450
1849	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1451	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1850		1452
1851	void	1453	void
1852	add (aio_req grp, ...)	1454	add (aio_req grp, ...)
1853	PPCODE:	1455	PPCODE:
1854	{	1456	{
1855	int i;	1457	int i;
1856	aio_req req;
1857
1858	if (main_sig && !block_sig_level)
1859	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1860		1458
1861	if (grp->int1 == 2)	1459	if (grp->int1 == 2)
1862	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");
1863		1461
1864	for (i = 1; i < items; ++i )	1462	for (i = 1; i < items; ++i )
1865	{	1463	{
		1464	aio_req req;
		1465
1866	if (GIMME_V != G_VOID)	1466	if (GIMME_V != G_VOID)
1867	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1467	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1868		1468
1869	req = SvAIO_REQ (ST (i));	1469	req = SvAIO_REQ (ST (i));
1870		1470
1871	if (req)	1471	if (req)
1872	{	1472	eio_grp_add (grp, req);
1873	++grp->size;
1874	req->grp = grp;
1875
1876	req->grp_prev = 0;
1877	req->grp_next = grp->grp_first;
1878
1879	if (grp->grp_first)
1880	grp->grp_first->grp_prev = req;
1881
1882	grp->grp_first = req;
1883	}
1884	}	1473	}
1885	}	1474	}
1886		1475
1887	void	1476	void
1888	cancel_subs (aio_req_ornot req)	1477	cancel_subs (aio_req_ornot req)
…		…
1897	AV *av;	1486	AV *av;
1898		1487
1899	grp->errorno = errno;	1488	grp->errorno = errno;
1900		1489
1901	av = newAV ();	1490	av = newAV ();
		1491	av_extend (av, items - 1);
1902		1492
1903	for (i = 1; i < items; ++i )	1493	for (i = 1; i < items; ++i )
1904	av_push (av, newSVsv (ST (i)));	1494	av_push (av, newSVsv (ST (i)));
1905		1495
1906	SvREFCNT_dec (grp->sv1);	1496	SvREFCNT_dec (grp->sv1);
…		…
1913	grp->errorno = errorno;	1503	grp->errorno = errorno;
1914		1504
1915	void	1505	void
1916	limit (aio_req grp, int limit)	1506	limit (aio_req grp, int limit)
1917	CODE:	1507	CODE:
1918	grp->int2 = limit;	1508	eio_grp_limit (grp, limit);
1919	aio_grp_feed (grp);
1920		1509
1921	void	1510	void
1922	feed (aio_req grp, SV *callback=&PL_sv_undef)	1511	feed (aio_req grp, SV *callback=&PL_sv_undef)
1923	CODE:	1512	CODE:
1924	{	1513	{
1925	SvREFCNT_dec (grp->sv2);	1514	SvREFCNT_dec (grp->sv2);
1926	grp->sv2 = newSVsv (callback);	1515	grp->sv2 = newSVsv (callback);
		1516	grp->feed = aio_grp_feed;
1927		1517
1928	if (grp->int2 <= 0)	1518	if (grp->int2 <= 0)
1929	grp->int2 = 2;	1519	grp->int2 = 2;
1930		1520
1931	aio_grp_feed (grp);	1521	eio_grp_limit (grp, grp->int2);
1932	}	1522	}
1933		1523

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