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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.92 by root, Wed Nov 8 01:59:59 2006 UTC vs.
Revision 1.164 by root, Tue May 4 21:14:01 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>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
27	#include <limits.h>	17	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	18	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	19	#include <sched.h>
32		20
33	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>	22	# include <sys/mman.h>
36	# elif __freebsd	23	#endif
37	# include <sys/socket.h>	24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
		28	#ifdef _WIN32
		29
		30	# define EIO_STRUCT_DIRENT Direntry_t
		31	# undef malloc
		32	# undef free
		33
		34	// perl overrides all those nice win32 functions
		35	# undef open
		36	# undef read
		37	# undef write
		38	# undef send
		39	# undef recv
		40	# undef stat
		41	# undef fstat
		42	# define lstat stat
		43	# undef truncate
		44	# undef ftruncate
		45	# undef open
		46	# undef close
		47	# undef unlink
		48	# undef rmdir
		49	# undef rename
		50	# undef lseek
		51
		52	# define chown(a,b,c) (errno = ENOSYS, -1)
		53	# define fchown(a,b,c) (errno = ENOSYS, -1)
		54	# define fchmod(a,b) (errno = ENOSYS, -1)
		55	# define symlink(a,b) (errno = ENOSYS, -1)
		56	# define readlink(a,b,c) (errno = ENOSYS, -1)
		57	# define mknod(a,b,c) (errno = ENOSYS, -1)
		58	# define truncate(a,b) (errno = ENOSYS, -1)
		59	# define ftruncate(fd,o) chsize ((fd), (o))
		60	# define fsync(fd) _commit (fd)
		61	# define opendir(fd) (errno = ENOSYS, 0)
		62	# define readdir(fd) (errno = ENOSYS, -1)
		63	# define closedir(fd) (errno = ENOSYS, -1)
		64	# define mkdir(a,b) mkdir (a)
		65
		66	#else
		67
38	# include <sys/uio.h>	68	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	69	# include <sys/select.h>
		70	# include <unistd.h>
		71	# include <utime.h>
		72	# include <signal.h>
		73	# define EIO_STRUCT_DIRENT struct dirent
		74
		75	#endif
		76
		77	/* perl stupidly overrides readdir and maybe others */
		78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
		82
		83	#define EIO_STRUCT_STAT Stat_t
		84
		85	/* use NV for 32 bit perls as it allows larger offsets */
		86	#if IVSIZE >= 8
		87	# define VAL64 IV
		88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
		90	#else
		91	# define VAL64 NV
		92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#ifndef ST_NODEV
		146	# define ST_NODEV 0
		147	#endif
		148	#ifndef ST_NOEXEC
		149	# define ST_NOEXEC 0
		150	#endif
		151	#ifndef ST_SYNCHRONOUS
		152	# define ST_SYNCHRONOUS 0
		153	#endif
		154	#ifndef ST_MANDLOCK
		155	# define ST_MANDLOCK 0
		156	#endif
		157	#ifndef ST_WRITE
		158	# define ST_WRITE 0
		159	#endif
		160	#ifndef ST_APPEND
		161	# define ST_APPEND 0
		162	#endif
		163	#ifndef ST_IMMUTABLE
		164	# define ST_IMMUTABLE 0
		165	#endif
		166	#ifndef ST_NOATIME
		167	# define ST_NOATIME 0
		168	#endif
		169	#ifndef ST_NODIRATIME
		170	# define ST_NODIRATIME 0
		171	#endif
		172	#ifndef ST_RELATIME
		173	# define ST_RELATIME 0
		174	#endif
		175
		176	#ifndef MCL_CURRENT
		177	# define MCL_CURRENT 0
		178	#endif
		179	#ifndef MCL_FUTURE
		180	# define MCL_FUTURE 0
		181	#endif
		182
		183	#ifndef MAP_ANONYMOUS
		184	# ifdef MAP_ANON
		185	# define MAP_ANONYMOUS MAP_ANON
43	# else	186	# else
44	# error sendfile support requested but not available	187	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	188	# endif
46	#endif	189	#endif
47		190	#ifndef MAP_HUGETLB
48	/* number of seconds after which idle threads exit */	191	# define MAP_HUGETLB 0
49	#define IDLE_TIMEOUT 10
50
51	/* used for struct dirent, AIX doesn't provide it */
52	#ifndef NAME_MAX
53	# define NAME_MAX 4096
54	#endif
55
56	#ifndef PTHREAD_STACK_MIN
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	192	#endif
		193	#ifndef MAP_LOCKED
		194	# define MAP_LOCKED 0
79	#endif	195	#endif
		196	#ifndef MAP_NORESERVE
		197	# define MAP_NORESERVE 0
		198	#endif
		199	#ifndef MAP_POPULATE
		200	# define MAP_POPULATE 0
		201	#endif
		202	#ifndef MAP_NONBLOCK
		203	# define MAP_NONBLOCK 0
		204	#endif
80		205
81	/* buffer size for various temporary buffers */	206	#ifndef PAGESIZE
82	#define AIO_BUFSIZE 65536	207	# define PAGESIZE sysconf (_SC_PAGESIZE)
		208	#endif
83		209
84	#define dBUF \	210	static int req_invoke (eio_req *req);
85	char *aio_buf; \	211	#define EIO_FINISH(req) req_invoke (req)
86	LOCK (wrklock); \	212	static void req_destroy (eio_req *grp);
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	213	#define EIO_DESTROY(req) req_destroy (req)
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	typedef SV SV8; /* byte-sv, used for argument-checking */
93		214
94	enum {	215	enum {
95	REQ_QUIT,	216	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
96	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
98	REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100	REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,
106	};	217	};
107		218
108	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"
110		220
111	typedef struct aio_cb
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;
116	SV *sv1, *sv2;
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;
123	int type;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127
128	unsigned char flags;
129	unsigned char pri;
130
131	SV *self; /* the perl counterpart of this request, if any */
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
133	} aio_cb;
134
135	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};
140
141	typedef aio_cb *aio_req;	221	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
143		223
144	enum {	224	static SV *on_next_submit;
145	PRI_MIN = -4,	225	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	226	static int max_outstanding;
147		227
148	DEFAULT_PRI = 0,	228	static s_epipe respipe;
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152		229
153	#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155	static unsigned int max_poll_time = 0;
156	static unsigned int max_poll_reqs = 0;
157
158	/* calculcate time difference in ~1/AIO_TICKS of a second */
159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181	typedef struct worker {
182	/* locked by wrklock */
183	struct worker *prev, *next;
184
185	pthread_t tid;
186
187	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */
189	void *dbuf;
190	DIR *dirp;
191	} worker;
192
193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195	static void worker_clear (worker *wrk)
196	{
197	if (wrk->dirp)
198	{
199	closedir (wrk->dirp);
200	wrk->dirp = 0;
201	}
202
203	if (wrk->dbuf)
204	{
205	free (wrk->dbuf);
206	wrk->dbuf = 0;
207	}
208	}
209
210	static void worker_free (worker *wrk)
211	{
212	wrk->next->prev = wrk->prev;
213	wrk->prev->next = wrk->next;
214
215	free (wrk);
216	}
217
218	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];
222
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227	#if WORDACCESS_UNSAFE
228
229	static unsigned int get_nready ()
230	{
231	unsigned int retval;
232
233	LOCK (reqlock);
234	retval = nready;
235	UNLOCK (reqlock);
236
237	return retval;
238	}
239
240	static unsigned int get_npending ()
241	{
242	unsigned int retval;
243
244	LOCK (reslock);
245	retval = npending;
246	UNLOCK (reslock);
247
248	return retval;
249	}
250
251	static unsigned int get_nthreads ()
252	{
253	unsigned int retval;
254
255	LOCK (wrklock);
256	retval = started;
257	UNLOCK (wrklock);
258
259	return retval;
260	}
261
262	#else
263
264	# define get_nready() nready
265	# define get_npending() npending
266	# define get_nthreads() started
267
268	#endif
269
270	/*
271	* a somewhat faster data structure might be nice, but
272	* with 8 priorities this actually needs <20 insns
273	* per shift, the most expensive operation.
274	*/
275	typedef struct {
276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277	int size;
278	} reqq;
279
280	static reqq req_queue;
281	static reqq res_queue;
282
283	int reqq_push (reqq *q, aio_req req)
284	{
285	int pri = req->pri;
286	req->next = 0;
287
288	if (q->qe[pri])
289	{
290	q->qe[pri]->next = req;
291	q->qe[pri] = req;
292	}
293	else
294	q->qe[pri] = q->qs[pri] = req;
295
296	return q->size++;
297	}
298
299	aio_req reqq_shift (reqq *q)
300	{
301	int pri;
302
303	if (!q->size)
304	return 0;
305
306	--q->size;
307
308	for (pri = NUM_PRI; pri--; )
309	{
310	aio_req req = q->qs[pri];
311
312	if (req)
313	{
314	if (!(q->qs[pri] = req->next))
315	q->qe[pri] = 0;
316
317	return req;
318	}
319	}
320
321	abort ();
322	}
323
324	static int poll_cb ();
325	static void req_invoke (aio_req req);
326	static void req_free (aio_req req);	230	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	231	static void req_cancel (aio_req req);
328		232
		233	static void want_poll (void)
		234	{
		235	/* write a dummy byte to the pipe so fh becomes ready */
		236	s_epipe_signal (&respipe);
		237	}
		238
		239	static void done_poll (void)
		240	{
		241	/* read any signals sent by the worker threads */
		242	s_epipe_drain (&respipe);
		243	}
		244
329	/* must be called at most once */	245	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
331	{	247	{
332	if (!req->self)	248	if (!req->self)
333	{	249	{
334	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
335	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336	}	252	}
337		253
338	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339	}	255	}
340		256
341	static aio_req SvAIO_REQ (SV *sv)	257	static aio_req SvAIO_REQ (SV *sv)
342	{	258	{
343	MAGIC *mg;	259	MAGIC *mg;
344		260
345	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	261	if (!SvROK (sv)
		262	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		263	&& SvSTASH (SvRV (sv)) != aio_req_stash
		264	&& !sv_derived_from (sv, "IO::AIO::REQ")))
346	croak ("object of class " AIO_REQ_KLASS " expected");	265	croak ("object of class IO::AIO::REQ expected");
347		266
348	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349		268
350	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	270	}
352		271
353	static void aio_grp_feed (aio_req grp)	272	static void aio_grp_feed (aio_req grp)
354	{	273	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	274	if (grp->sv2 && SvOK (grp->sv2))
356	{	275	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	276	dSP;
362		277
363	ENTER;	278	ENTER;
364	SAVETMPS;	279	SAVETMPS;
365	PUSHMARK (SP);	280	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	281	XPUSHs (req_sv (grp, aio_grp_stash));
367	PUTBACK;	282	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	284	SPAGAIN;
370	FREETMPS;	285	FREETMPS;
371	LEAVE;	286	LEAVE;
372	}
373
374	/* stop if no progress has been made */
375	if (old_len == grp->size)
376	{
377	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;
379	break;
380	}
381	}	287	}
382	}	288	}
383		289
384	static void aio_grp_dec (aio_req grp)	290	static void req_submit (eio_req *req)
385	{	291	{
386	--grp->size;	292	eio_submit (req);
387		293
388	/* call feeder, if applicable */	294	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	295	{
394	req_invoke (grp);	296	dSP;
395	req_free (grp);	297	SV *cb = sv_2mortal (on_next_submit);
		298
		299	on_next_submit = 0;
		300
		301	PUSHMARK (SP);
		302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
396	}	304	}
397	}	305	}
398		306
399	static void req_invoke (aio_req req)	307	static int req_invoke (eio_req *req)
400	{	308	{
401	dSP;	309	dSP;
402		310
403	if (req->flags & FLAG_SV1_RO_OFF)	311	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	312	SvREADONLY_off (req->sv2);
405		313
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	314	if (!EIO_CANCELLED (req) && req->callback)
407	{	315	{
408	ENTER;	316	ENTER;
409	SAVETMPS;	317	SAVETMPS;
410	PUSHMARK (SP);	318	PUSHMARK (SP);
411	EXTEND (SP, 1);	319	EXTEND (SP, 1);
412		320
413	switch (req->type)	321	switch (req->type)
414	{	322	{
415	case REQ_READDIR:	323	case EIO_READDIR:
416	{	324	{
417	SV *rv = &PL_sv_undef;	325	SV *rv = &PL_sv_undef;
418		326
419	if (req->result >= 0)	327	if (req->result >= 0)
420	{	328	{
421	int i;	329	int i;
422	char *buf = req->ptr2;	330	char *names = (char *)req->ptr2;
		331	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423	AV *av = newAV ();	332	AV *av = newAV ();
424		333
425	av_extend (av, req->result - 1);	334	av_extend (av, req->result - 1);
426		335
427	for (i = 0; i < req->result; ++i)	336	for (i = 0; i < req->result; ++i)
428	{	337	{
429	SV *sv = newSVpv (buf, 0);	338	if (req->int1 & EIO_READDIR_DENTS)
		339	{
		340	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430		341
		342	if (req->int1 & EIO_READDIR_CUSTOM2)
		343	{
		344	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		345	AV *avent = newAV ();
		346
		347	av_extend (avent, 2);
		348
		349	if (!sv_type [ent->type])
		350	{
		351	sv_type [ent->type] = newSViv (ent->type);
		352	SvREADONLY_on (sv_type [ent->type]);
		353	}
		354
		355	av_store (avent, 0, namesv);
		356	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		357	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		358
		359	av_store (av, i, newRV_noinc ((SV *)avent));
		360	}
		361	else
431	av_store (av, i, sv);	362	av_store (av, i, namesv);
		363
		364	++ent;
		365	}
		366	else
		367	{
		368	SV *name = newSVpv (names, 0);
		369	av_store (av, i, name);
432	buf += SvCUR (sv) + 1;	370	names += SvCUR (name) + 1;
		371	}
433	}	372	}
434		373
435	rv = sv_2mortal (newRV_noinc ((SV *)av));	374	rv = sv_2mortal (newRV_noinc ((SV *)av));
436	}	375	}
437		376
438	PUSHs (rv);	377	PUSHs (rv);
		378
		379	if (req->int1 & EIO_READDIR_CUSTOM1)
		380	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439	}	381	}
440	break;	382	break;
441		383
442	case REQ_OPEN:	384	case EIO_OPEN:
443	{	385	{
444	/* convert fd to fh */	386	/* convert fd to fh */
445	SV *fh;	387	SV *fh = &PL_sv_undef;
446		388
447	PUSHs (sv_2mortal (newSViv (req->result)));	389	if (req->result >= 0)
448	PUTBACK;	390	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	391	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	392	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		393	char sym [64];
		394	int symlen;
		395
		396	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		397	gv_init (gv, aio_stash, sym, symlen, 0);
451		398
452	fh = SvREFCNT_inc (POPs);	399	symlen = snprintf (
		400	sym,
		401	sizeof (sym),
		402	"%s&=%d",
		403	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		404	(int)req->result
		405	);
453		406
		407	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		408	fh = (SV *)gv;
		409	}
		410
454	PUSHMARK (SP);	411	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	412	}
457	break;	413	break;
458		414
		415	case EIO_STATVFS:
		416	case EIO_FSTATVFS:
		417	{
		418	SV *rv = &PL_sv_undef;
		419
		420	if (req->result >= 0)
		421	{
		422	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		423	HV *hv = newHV ();
		424
		425	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		426
		427	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		428	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		429	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		430	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		431	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		432	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		433	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		434	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		435	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		436	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		437	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		438	}
		439
		440	PUSHs (rv);
		441	}
		442
		443	break;
		444
459	case REQ_GROUP:	445	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	446	req->int1 = 2; /* mark group as finished */
461		447
462	if (req->sv1)	448	if (req->sv1)
463	{	449	{
464	int i;	450	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	454	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	455	PUSHs (*av_fetch (av, i, 0));
470	}	456	}
471	break;	457	break;
472		458
473	case REQ_NOP:	459	case EIO_NOP:
474	case REQ_BUSY:	460	case EIO_BUSY:
475	break;	461	break;
476		462
477	case REQ_READLINK:	463	case EIO_READLINK:
478	if (req->result > 0)	464	if (req->result > 0)
479	{	465	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480	SvCUR_set (req->sv1, req->result);
481	*SvEND (req->sv1) = 0;
482	PUSHs (req->sv1);
483	}
484	break;	466	break;
485		467
486	case REQ_STAT:	468	case EIO_STAT:
487	case REQ_LSTAT:	469	case EIO_LSTAT:
488	case REQ_FSTAT:	470	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	471	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
490	PL_laststatval = req->result;	472	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);	473	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	474	PUSHs (sv_2mortal (newSViv (req->result)));
493	break;	475	break;
494		476
495	case REQ_READ:	477	case EIO_READ:
		478	{
496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	479	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
497	*SvEND (req->sv1) = 0;	480	*SvEND (req->sv2) = 0;
		481	SvPOK_only (req->sv2);
		482	SvSETMAGIC (req->sv2);
498	PUSHs (sv_2mortal (newSViv (req->result)));	483	PUSHs (sv_2mortal (newSViv (req->result)));
		484	}
499	break;	485	break;
		486
		487	case EIO_DUP2:
		488	if (req->result > 0)
		489	req->result = 0;
		490	/* FALLTHROUGH */
500		491
501	default:	492	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	493	PUSHs (sv_2mortal (newSViv (req->result)));
503	break;	494	break;
504	}	495	}
505		496
506	errno = req->errorno;	497	errno = req->errorno;
507		498
508	PUTBACK;	499	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	500	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	SPAGAIN;	501	SPAGAIN;
511		502
512	FREETMPS;	503	FREETMPS;
513	LEAVE;	504	LEAVE;
		505
		506	PUTBACK;
514	}	507	}
515		508
516	if (req->grp)	509	return !!SvTRUE (ERRSV);
517	{
518	aio_req grp = req->grp;
519
520	/* unlink request */
521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524	if (grp->grp_first == req)
525	grp->grp_first = req->grp_next;
526
527	aio_grp_dec (grp);
528	}
529
530	if (SvTRUE (ERRSV))
531	{
532	req_free (req);
533	croak (0);
534	}
535	}	510	}
536		511
537	static void req_free (aio_req req)	512	static void req_destroy (aio_req req)
538	{	513	{
539	if (req->self)	514	if (req->self)
540	{	515	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	516	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	517	SvREFCNT_dec (req->self);
543	}	518	}
544		519
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	520	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	521	SvREFCNT_dec (req->sv2);
548	SvREFCNT_dec (req->callback);	522	SvREFCNT_dec (req->callback);
549		523
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	524	Safefree (req);
554	}	525	}
555		526
556	static void req_cancel_subs (aio_req grp)	527	static void req_cancel_subs (aio_req grp)
557	{	528	{
558	aio_req sub;	529	aio_req sub;
559		530
560	if (grp->type != REQ_GROUP)	531	if (grp->type != EIO_GROUP)
561	return;	532	return;
562		533
563	SvREFCNT_dec (grp->sv2);	534	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	535	grp->sv2 = 0;
565		536
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	537	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	538	}
569		539
570	static void req_cancel (aio_req req)	540	static void
		541	create_respipe (void)
571	{	542	{
572	req->flags |= FLAG_CANCELLED;	543	if (s_epipe_renew (&respipe))
573		544	croak ("IO::AIO: unable to initialize result pipe");
574	req_cancel_subs (req);
575	}	545	}
576		546
577	static void *aio_proc(void *arg);
578
579	static void start_thread (void)
580	{
581	sigset_t fullsigset, oldsigset;
582	pthread_attr_t attr;
583
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	pthread_attr_init (&attr);
590	pthread_attr_setstacksize (&attr, STACKSIZE);
591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592	#ifdef PTHREAD_SCOPE_PROCESS
593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594	#endif
595
596	sigfillset (&fullsigset);
597
598	LOCK (wrklock);
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
602	{
603	wrk->prev = &wrk_first;
604	wrk->next = wrk_first.next;
605	wrk_first.next->prev = wrk;
606	wrk_first.next = wrk;
607	++started;
608	}
609	else
610	free (wrk);
611
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);
613	UNLOCK (wrklock);
614	}
615
616	static void maybe_start_thread ()
617	{
618	if (get_nthreads () >= wanted)
619	return;
620
621	/* todo: maybe use idle here, but might be less exact */
622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623	return;
624
625	start_thread ();
626	}
627
628	static void req_send (aio_req req)
629	{
630	++nreqs;
631
632	LOCK (reqlock);
633	++nready;
634	reqq_push (&req_queue, req);
635	pthread_cond_signal (&reqwait);
636	UNLOCK (reqlock);
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	pthread_cond_signal (&reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	547	static void poll_wait (void)
683	{	548	{
684	fd_set rfd;
685
686	while (nreqs)	549	while (eio_nreqs ())
687	{	550	{
688	int size;	551	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	552
		553	X_LOCK (reslock);
690	size = res_queue.size;	554	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	555	X_UNLOCK (reslock);
692		556
693	if (size)	557	if (size)
694	return;	558	return;
695		559
696	maybe_start_thread ();	560	etp_maybe_start_thread ();
697		561
698	FD_ZERO(&rfd);	562	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	563	}
703	}	564	}
704		565
705	static int poll_cb ()	566	static int poll_cb (void)
706	{	567	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	for (;;)	568	for (;;)
718	{	569	{
719	for (;;)	570	int res = eio_poll ();
720	{
721	maybe_start_thread ();
722		571
723	LOCK (reslock);	572	if (res > 0)
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{
728	--npending;
729
730	if (!res_queue.size)
731	{
732	/* read any signals sent by the worker threads */
733	char buf [32];
734	while (read (respipe [0], buf, 32) == 32)
735	;
736	}
737	}
738
739	UNLOCK (reslock);
740
741	if (!req)
742	break;
743
744	--nreqs;
745
746	if (req->type == REQ_GROUP && req->size)
747	{
748	req->int1 = 1; /* mark request as delayed */
749	continue;
750	}
751	else
752	{
753	req_invoke (req);
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;	573	croak (0);
		574
		575	if (!max_outstanding || max_outstanding > eio_nreqs ())
		576	return res;
774		577
775	poll_wait ();	578	poll_wait ();
776
777	++maxreqs;
778	}	579	}
779
780	return count;
781	}	580	}
782		581
783	static void create_pipe ()	582	static void atfork_child (void)
784	{	583	{
785	if (pipe (respipe))	584	create_respipe ();
786	croak ("unable to initialize result pipe");
787
788	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790
791	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792	croak ("cannot set result pipe to nonblocking mode");
793	}	585	}
794		586
795	/*****************************************************************************/	587	/*****************************************************************************/
796	/* work around various missing functions */
797		588
798	#if !HAVE_PREADWRITE	589	#if !_POSIX_MAPPED_FILES
799	# define pread aio_pread	590	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
800	# define pwrite aio_pwrite	591	# define munmap(addr,length) (errno = ENOSYS, -1)
801
802	/*
803	* make our pread/pwrite safe against themselves, but not against
804	* normal read/write by using a mutex. slows down execution a lot,
805	* but that's your problem, not mine.
806	*/
807	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810	{
811	ssize_t res;
812	off_t ooffset;
813
814	LOCK (preadwritelock);
815	ooffset = lseek (fd, 0, SEEK_CUR);
816	lseek (fd, offset, SEEK_SET);
817	res = read (fd, buf, count);
818	lseek (fd, ooffset, SEEK_SET);
819	UNLOCK (preadwritelock);
820
821	return res;
822	}
823
824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825	{
826	ssize_t res;
827	off_t ooffset;
828
829	LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);
832	res = write (fd, buf, count);
833	lseek (fd, offset, SEEK_SET);
834	UNLOCK (preadwritelock);
835
836	return res;
837	}
838	#endif
839
840	#if !HAVE_FDATASYNC
841	# define fdatasync fsync
842	#endif
843
844	#if !HAVE_READAHEAD
845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848	{
849	dBUF;
850
851	while (count > 0)
852	{
853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855	pread (fd, aio_buf, len, offset);
856	offset += len;
857	count -= len;
858	}
859
860	errno = 0;
861	}
862
863	#endif
864
865	#if !HAVE_READDIR_R
866	# define readdir_r aio_readdir_r
867
868	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871	{
872	struct dirent *e;
873	int errorno;
874
875	LOCK (readdirlock);
876
877	e = readdir (dirp);
878	errorno = errno;
879
880	if (e)
881	{
882	*res = ent;
883	strcpy (ent->d_name, e->d_name);
884	}
885	else
886	*res = 0;
887
888	UNLOCK (readdirlock);
889
890	errno = errorno;
891	return e ? 0 : -1;
892	}
893	#endif
894
895	/* sendfile always needs emulation */
896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897	{
898	ssize_t res;
899
900	if (!count)
901	return 0;
902
903	#if HAVE_SENDFILE
904	# if __linux
905	res = sendfile (ofd, ifd, &offset, count);
906
907	# elif __freebsd
908	/*
909	* Of course, the freebsd sendfile is a dire hack with no thoughts
910	* wasted on making it similar to other I/O functions.
911	*/
912	{
913	off_t sbytes;
914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916	if (res < 0 && sbytes)
917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918	res = sbytes;
919	}
920
921	# elif __hpux
922	res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924	# elif __solaris
925	{
926	struct sendfilevec vec;
927	size_t sbytes;
928
929	vec.sfv_fd = ifd;
930	vec.sfv_flag = 0;
931	vec.sfv_off = offset;
932	vec.sfv_len = count;
933
934	res = sendfilev (ofd, &vec, 1, &sbytes);
935
936	if (res < 0 && sbytes)
937	res = sbytes;
938	}
939
940	# endif	592	#endif
941	#else
942	res = -1;
943	errno = ENOSYS;
944	#endif
945		593
946	if (res < 0	594	#define MMAP_MAGIC PERL_MAGIC_ext
947	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948	#if __solaris
949	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
950	#endif
951	)
952	)
953	{
954	/* emulate sendfile. this is a major pain in the ass */
955	dBUF;
956		595
957	res = 0;	596	static int
		597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		598	{
		599	int old_errno = errno;
		600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		601	errno = old_errno;
958		602
959	while (count)	603	mg->mg_obj = 0; /* just in case */
960	{
961	ssize_t cnt;
962
963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964		604
965	if (cnt <= 0)	605	SvREADONLY_off (sv);
966	{	606	SvCUR_set (sv, 0);
967	if (cnt && !res) res = -1;	607	SvLEN_set (sv, 0);
968	break;	608	SvPVX (sv) = 0;
969	}	609	SvOK_off (sv);
970		610
971	cnt = write (ofd, aio_buf, cnt);
972
973	if (cnt <= 0)
974	{
975	if (cnt && !res) res = -1;
976	break;
977	}
978
979	offset += cnt;
980	res += cnt;
981	count -= cnt;
982	}
983	}
984
985	return res;	611	return 0;
986	}	612	}
987		613
988	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
989	static void scandir_ (aio_req req, worker *self)	615	0, 0, 0, 0, mmap_free
990	{	616	};
991	DIR *dirp;
992	union
993	{
994	struct dirent d;
995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996	} *u;
997	struct dirent *entp;
998	char *name, *names;
999	int memlen = 4096;
1000	int memofs = 0;
1001	int res = 0;
1002	int errorno;
1003
1004	LOCK (wrklock);
1005	self->dirp = dirp = opendir (req->ptr1);
1006	self->dbuf = u = malloc (sizeof (*u));
1007	req->flags |= FLAG_PTR2_FREE;
1008	req->ptr2 = names = malloc (memlen);
1009	UNLOCK (wrklock);
1010
1011	if (dirp && u && names)
1012	for (;;)
1013	{
1014	errno = 0;
1015	readdir_r (dirp, &u->d, &entp);
1016
1017	if (!entp)
1018	break;
1019
1020	name = entp->d_name;
1021
1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023	{
1024	int len = strlen (name) + 1;
1025
1026	res++;
1027
1028	while (memofs + len > memlen)
1029	{
1030	memlen *= 2;
1031	LOCK (wrklock);
1032	req->ptr2 = names = realloc (names, memlen);
1033	UNLOCK (wrklock);
1034
1035	if (!names)
1036	break;
1037	}
1038
1039	memcpy (names + memofs, name, len);
1040	memofs += len;
1041	}
1042	}
1043
1044	if (errno)
1045	res = -1;
1046
1047	req->result = res;
1048	}
1049		617
1050	/*****************************************************************************/	618	/*****************************************************************************/
1051		619
1052	static void *aio_proc (void *thr_arg)	620	static SV *
		621	get_cb (SV *cb_sv)
1053	{	622	{
1054	aio_req req;	623	SvGETMAGIC (cb_sv);
1055	struct timespec ts;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1056	worker *self = (worker *)thr_arg;
1057
1058	/* try to distribute timeouts somewhat evenly */
1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060	* (1000000000UL / 1024UL);
1061
1062	for (;;)
1063	{
1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066	LOCK (reqlock);
1067
1068	for (;;)
1069	{
1070	self->req = req = reqq_shift (&req_queue);
1071
1072	if (req)
1073	break;
1074
1075	++idle;
1076
1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078	== ETIMEDOUT)
1079	{
1080	if (idle > max_idle)
1081	{
1082	--idle;
1083	UNLOCK (reqlock);
1084	LOCK (wrklock);
1085	--started;
1086	UNLOCK (wrklock);
1087	goto quit;
1088	}
1089
1090	/* we are allowed to idle, so do so without any timeout */
1091	pthread_cond_wait (&reqwait, &reqlock);
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093	}
1094
1095	--idle;
1096	}
1097
1098	--nready;
1099
1100	UNLOCK (reqlock);
1101
1102	errno = 0; /* strictly unnecessary */
1103
1104	if (!(req->flags & FLAG_CANCELLED))
1105	switch (req->type)
1106	{
1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118	case REQ_CLOSE: req->result = close (req->int1); break;
1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
1129	case REQ_READDIR: scandir_ (req, self); break;
1130
1131	case REQ_BUSY:
1132	{
1133	struct timeval tv;
1134
1135	tv.tv_sec = req->int1;
1136	tv.tv_usec = req->int2;
1137
1138	req->result = select (0, 0, 0, 0, &tv);
1139	}
1140
1141	case REQ_GROUP:
1142	case REQ_NOP:
1143	break;
1144
1145	case REQ_QUIT:
1146	goto quit;
1147
1148	default:
1149	req->result = ENOSYS;
1150	break;
1151	}
1152
1153	req->errorno = errno;
1154
1155	LOCK (reslock);
1156
1157	++npending;
1158
1159	if (!reqq_push (&res_queue, req))
1160	/* write a dummy byte to the pipe so fh becomes ready */
1161	write (respipe [1], &respipe, 1);
1162
1163	self->req = 0;
1164	worker_clear (self);
1165
1166	UNLOCK (reslock);
1167	}
1168
1169	quit:
1170	LOCK (wrklock);
1171	worker_free (self);
1172	UNLOCK (wrklock);
1173
1174	return 0;
1175	}
1176
1177	/*****************************************************************************/
1178
1179	static void atfork_prepare (void)
1180	{
1181	LOCK (wrklock);
1182	LOCK (reqlock);
1183	LOCK (reslock);
1184	#if !HAVE_PREADWRITE
1185	LOCK (preadwritelock);
1186	#endif
1187	#if !HAVE_READDIR_R
1188	LOCK (readdirlock);
1189	#endif
1190	}
1191
1192	static void atfork_parent (void)
1193	{
1194	#if !HAVE_READDIR_R
1195	UNLOCK (readdirlock);
1196	#endif
1197	#if !HAVE_PREADWRITE
1198	UNLOCK (preadwritelock);
1199	#endif
1200	UNLOCK (reslock);
1201	UNLOCK (reqlock);
1202	UNLOCK (wrklock);
1203	}
1204
1205	static void atfork_child (void)
1206	{
1207	aio_req prv;
1208
1209	while (prv = reqq_shift (&req_queue))
1210	req_free (prv);
1211
1212	while (prv = reqq_shift (&res_queue))
1213	req_free (prv);
1214
1215	while (wrk_first.next != &wrk_first)
1216	{
1217	worker *wrk = wrk_first.next;
1218
1219	if (wrk->req)
1220	req_free (wrk->req);
1221
1222	worker_clear (wrk);
1223	worker_free (wrk);
1224	}
1225
1226	started = 0;
1227	idle = 0;
1228	nreqs = 0;
1229	nready = 0;
1230	npending = 0;
1231
1232	close (respipe [0]);
1233	close (respipe [1]);
1234	create_pipe ();
1235
1236	atfork_parent ();
1237	}	625	}
1238		626
1239	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
1240	aio_req req; \	629	aio_req req; \
1241	int req_pri = next_pri; \	630	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \	631	next_pri = EIO_PRI_DEFAULT; \
1243	\	632	\
1244	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
1245	croak ("callback must be undef or of reference type"); \
1246	\	634	\
1247	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
1248	if (!req) \	636	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
1250	\	638	\
1251	req->callback = newSVsv (callback); \	639	req->callback = SvREFCNT_inc (cb_cv); \
1252	req->pri = req_pri	640	req->pri = req_pri
1253		641
1254	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
1255	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
1256	\	646	\
1257	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
1259		649
1260	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
1261		651
1262	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
1263		653
1264	BOOT:	654	BOOT:
1265	{	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_RDWR)
		668	const_iv (O_CREAT)
		669	const_iv (O_TRUNC)
		670	const_iv (O_EXCL)
		671	const_iv (O_APPEND)
		672	#ifndef _WIN32
		673	const_iv (S_IFIFO)
		674	#endif
		675	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		676	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		677	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		678	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		679	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		680	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		681
		682	const_iv (ST_RDONLY)
		683	const_iv (ST_NOSUID)
		684	const_iv (ST_NODEV)
		685	const_iv (ST_NOEXEC)
		686	const_iv (ST_SYNCHRONOUS)
		687	const_iv (ST_MANDLOCK)
		688	const_iv (ST_WRITE)
		689	const_iv (ST_APPEND)
		690	const_iv (ST_IMMUTABLE)
		691	const_iv (ST_NOATIME)
		692	const_iv (ST_NODIRATIME)
		693	const_iv (ST_RELATIME)
		694
		695	const_iv (PROT_EXEC)
		696	const_iv (PROT_NONE)
		697	const_iv (PROT_READ)
		698	const_iv (PROT_WRITE)
		699
		700	/*const_iv (MAP_FIXED)*/
		701	const_iv (MAP_PRIVATE)
		702	const_iv (MAP_SHARED)
		703	const_iv (MAP_ANONYMOUS)
		704
		705	/* linuxish */
		706	const_iv (MAP_HUGETLB)
		707	const_iv (MAP_LOCKED)
		708	const_iv (MAP_NORESERVE)
		709	const_iv (MAP_POPULATE)
		710	const_iv (MAP_NONBLOCK)
		711
		712	const_iv (MCL_FUTURE)
		713	const_iv (MCL_CURRENT)
		714
		715	const_eio (MS_ASYNC)
		716	const_eio (MS_INVALIDATE)
		717	const_eio (MS_SYNC)
		718
		719	const_eio (MT_MODIFY)
		720
		721	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		722	const_eio (SYNC_FILE_RANGE_WRITE)
		723	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		724
		725	const_eio (READDIR_DENTS)
		726	const_eio (READDIR_DIRS_FIRST)
		727	const_eio (READDIR_STAT_ORDER)
		728	const_eio (READDIR_FOUND_UNKNOWN)
		729
		730	const_eio (DT_UNKNOWN)
		731	const_eio (DT_FIFO)
		732	const_eio (DT_CHR)
		733	const_eio (DT_DIR)
		734	const_eio (DT_BLK)
		735	const_eio (DT_REG)
		736	const_eio (DT_LNK)
		737	const_eio (DT_SOCK)
		738	const_eio (DT_WHT)
		739	};
		740
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	741	aio_stash = gv_stashpv ("IO::AIO" , 1);
		742	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		743	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1267		744
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	745	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	746	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274		747
		748	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		749
1275	create_pipe ();	750	create_respipe ();
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	751
		752	if (eio_init (want_poll, done_poll) < 0)
		753	croak ("IO::AIO: unable to initialise eio library");
		754
		755	/* atfork child called in fifo order, so before eio's handler */
		756	X_THREAD_ATFORK (0, 0, atfork_child);
1277	}	757	}
1278		758
1279	void	759	void
1280	max_poll_reqs (int nreqs)	760	max_poll_reqs (int nreqs)
1281	PROTOTYPE: $	761	PROTOTYPE: $
1282	CODE:	762	CODE:
1283	max_poll_reqs = nreqs;	763	eio_set_max_poll_reqs (nreqs);
1284		764
1285	void	765	void
1286	max_poll_time (double nseconds)	766	max_poll_time (double nseconds)
1287	PROTOTYPE: $	767	PROTOTYPE: $
1288	CODE:	768	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	769	eio_set_max_poll_time (nseconds);
1290		770
1291	void	771	void
1292	min_parallel (int nthreads)	772	min_parallel (int nthreads)
1293	PROTOTYPE: $	773	PROTOTYPE: $
		774	CODE:
		775	eio_set_min_parallel (nthreads);
1294		776
1295	void	777	void
1296	max_parallel (int nthreads)	778	max_parallel (int nthreads)
1297	PROTOTYPE: $	779	PROTOTYPE: $
		780	CODE:
		781	eio_set_max_parallel (nthreads);
1298		782
1299	void	783	void
1300	max_idle (int nthreads)	784	max_idle (int nthreads)
1301	PROTOTYPE: $	785	PROTOTYPE: $
1302	CODE:	786	CODE:
1303	set_max_idle (nthreads);	787	eio_set_max_idle (nthreads);
1304		788
1305	int	789	void
1306	max_outstanding (int maxreqs)	790	max_outstanding (int maxreqs)
1307	PROTOTYPE: $	791	PROTOTYPE: $
1308	CODE:	792	CODE:
1309	RETVAL = max_outstanding;
1310	max_outstanding = maxreqs;	793	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		794
1314	void	795	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	796	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$	797	PROTOTYPE: $$$;$
1321	PPCODE:	798	PPCODE:
1322	{	799	{
1323	dREQ;	800	dREQ;
1324		801
1325	req->type = REQ_OPEN;	802	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	803	req->sv1 = newSVsv (pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);	804	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	805	req->int1 = flags;
1329	req->mode = mode;	806	req->int2 = mode;
1330		807
1331	REQ_SEND;	808	REQ_SEND;
1332	}	809	}
1333		810
1334	void	811	void
1335	aio_close (fh,callback=&PL_sv_undef)	812	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$	813	PROTOTYPE: $;$
1339	ALIAS:	814	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	815	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	816	aio_fdatasync = EIO_FDATASYNC
1343	PPCODE:	817	PPCODE:
1344	{	818	{
		819	int fd = s_fileno_croak (fh, 0);
1345	dREQ;	820	dREQ;
1346		821
1347	req->type = ix;	822	req->type = ix;
1348	req->fh = newSVsv (fh);	823	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	824	req->int1 = fd;
1350		825
1351	REQ_SEND (req);	826	REQ_SEND (req);
1352	}	827	}
1353		828
1354	void	829	void
		830	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		831	PROTOTYPE: $$$$;$
		832	PPCODE:
		833	{
		834	int fd = s_fileno_croak (fh, 0);
		835	dREQ;
		836
		837	req->type = EIO_SYNC_FILE_RANGE;
		838	req->sv1 = newSVsv (fh);
		839	req->int1 = fd;
		840	req->offs = offset;
		841	req->size = nbytes;
		842	req->int2 = flags;
		843
		844	REQ_SEND (req);
		845	}
		846
		847	void
		848	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		849	PROTOTYPE: $;$
		850	PPCODE:
		851	{
		852	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		853	int fd = s_fileno_croak (fh, 0);
		854	dREQ;
		855
		856	if (close_pipe < 0)
		857	{
		858	int pipefd [2];
		859
		860	if (pipe (pipefd) < 0
		861	|| close (pipefd [1]) < 0
		862	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		863	abort (); /*D*/
		864
		865	close_pipe = pipefd [0];
		866	}
		867
		868	req->type = EIO_DUP2;
		869	req->int1 = close_pipe;
		870	req->sv2 = newSVsv (fh);
		871	req->int2 = fd;
		872
		873	REQ_SEND (req);
		874	}
		875
		876	void
1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	877	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	878	ALIAS:
1363	aio_read = REQ_READ	879	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	880	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$	881	PROTOTYPE: $$$$$;$
1366	PPCODE:	882	PPCODE:
1367	{	883	{
1368	STRLEN svlen;	884	STRLEN svlen;
		885	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369	char *svptr = SvPVbyte (data, svlen);	886	char *svptr = SvPVbyte (data, svlen);
1370		887	UV len = SvUV (length);
1371	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);
1373		888
1374	if (dataoffset < 0)	889	if (dataoffset < 0)
1375	dataoffset += svlen;	890	dataoffset += svlen;
1376		891
1377	if (dataoffset < 0 || dataoffset > svlen)	892	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	893	croak ("dataoffset outside of data scalar");
1379		894
1380	if (ix == REQ_WRITE)	895	if (ix == EIO_WRITE)
1381	{	896	{
1382	/* write: check length and adjust. */	897	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	898	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	899	len = svlen - dataoffset;
1385	}	900	}
1386	else	901	else
1387	{	902	{
1388	/* read: grow scalar as necessary */	903	/* read: check type and grow scalar as necessary */
		904	SvUPGRADE (data, SVt_PV);
1389	svptr = SvGROW (data, length + dataoffset);	905	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	906	}
1391
1392	if (length < 0)
1393	croak ("length must not be negative");
1394		907
1395	{	908	{
1396	dREQ;	909	dREQ;
1397		910
1398	req->type = ix;	911	req->type = ix;
1399	req->fh = newSVsv (fh);	912	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	913	req->int1 = fd;
1401	: IoOFP (sv_2io (fh)));	914	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->offs = offset;
1403	req->size = length;	915	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	916	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	917	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	918	req->stroffset = dataoffset;
1407		919
1408	if (!SvREADONLY (data))	920	if (!SvREADONLY (data))
1409	{	921	{
1410	SvREADONLY_on (data);	922	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	923	req->flags |= FLAG_SV2_RO_OFF;
1412	}	924	}
1413		925
1414	REQ_SEND;	926	REQ_SEND;
1415	}	927	}
1416	}	928	}
1417		929
1418	void	930	void
1419	aio_readlink (path,callback=&PL_sv_undef)	931	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1420	SV8 * path
1421	SV * callback
1422	PROTOTYPE: $$;$	932	PROTOTYPE: $$;$
1423	PPCODE:	933	PPCODE:
1424	{	934	{
1425	SV *data;	935	SV *data;
1426	dREQ;	936	dREQ;
1427		937
1428	data = newSV (NAME_MAX);
1429	SvPOK_on (data);
1430
1431	req->type = REQ_READLINK;	938	req->type = EIO_READLINK;
1432	req->fh = newSVsv (path);	939	req->sv1 = newSVsv (path);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);	940	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->sv1 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);
1436		941
1437	REQ_SEND;	942	REQ_SEND;
1438	}	943	}
1439		944
1440	void	945	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	946	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$	947	PROTOTYPE: $$$$;$
1448	PPCODE:	948	PPCODE:
1449	{	949	{
		950	int ifd = s_fileno_croak (in_fh , 0);
		951	int ofd = s_fileno_croak (out_fh, 1);
1450	dREQ;	952	dREQ;
1451		953
1452	req->type = REQ_SENDFILE;	954	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	955	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	956	req->int1 = ofd;
1455	req->sv2 = newSVsv (in_fh);	957	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	958	req->int2 = ifd;
1457	req->offs = in_offset;	959	req->offs = in_offset;
1458	req->size = length;	960	req->size = length;
1459		961
1460	REQ_SEND;	962	REQ_SEND;
1461	}	963	}
1462		964
1463	void	965	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	966	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$	967	PROTOTYPE: $$$;$
1470	PPCODE:	968	PPCODE:
1471	{	969	{
		970	int fd = s_fileno_croak (fh, 0);
1472	dREQ;	971	dREQ;
1473		972
1474	req->type = REQ_READAHEAD;	973	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	974	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	975	req->int1 = fd;
1477	req->offs = offset;	976	req->offs = offset;
1478	req->size = length;	977	req->size = length;
1479		978
1480	REQ_SEND;	979	REQ_SEND;
1481	}	980	}
1482		981
1483	void	982	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	983	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	984	ALIAS:
1488	aio_stat = REQ_STAT	985	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	986	aio_lstat = EIO_LSTAT
		987	aio_statvfs = EIO_STATVFS
1490	PPCODE:	988	PPCODE:
1491	{	989	{
1492	dREQ;	990	dREQ;
1493		991
1494	req->ptr2 = malloc (sizeof (Stat_t));	992	req->sv1 = newSVsv (fh_or_path);
1495	if (!req->ptr2)
1496	{
1497	req_free (req);
1498	croak ("out of memory during aio_stat statdata allocation");
1499	}
1500		993
1501	req->flags |= FLAG_PTR2_FREE;	994	if (SvPOK (req->sv1))
1502
1503	if (SvPOK (fh_or_path))
1504	{	995	{
1505	req->type = ix;	996	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);	997	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}	998	}
1509	else	999	else
1510	{	1000	{
1511	req->type = REQ_FSTAT;	1001	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1002	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}	1003	}
1515		1004
1516	REQ_SEND;	1005	REQ_SEND;
1517	}	1006	}
1518		1007
1519	void	1008	void
		1009	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1010	PPCODE:
		1011	{
		1012	dREQ;
		1013
		1014	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1015	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1016	req->sv1 = newSVsv (fh_or_path);
		1017
		1018	if (SvPOK (req->sv1))
		1019	{
		1020	req->type = EIO_UTIME;
		1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1022	}
		1023	else
		1024	{
		1025	req->type = EIO_FUTIME;
		1026	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1027	}
		1028
		1029	REQ_SEND;
		1030	}
		1031
		1032	void
		1033	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1034	PPCODE:
		1035	{
		1036	dREQ;
		1037
		1038	req->sv1 = newSVsv (fh_or_path);
		1039	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1040
		1041	if (SvPOK (req->sv1))
		1042	{
		1043	req->type = EIO_TRUNCATE;
		1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1045	}
		1046	else
		1047	{
		1048	req->type = EIO_FTRUNCATE;
		1049	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1050	}
		1051
		1052	REQ_SEND;
		1053	}
		1054
		1055	void
		1056	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1057	ALIAS:
		1058	aio_chmod = EIO_CHMOD
		1059	aio_mkdir = EIO_MKDIR
		1060	PPCODE:
		1061	{
		1062	dREQ;
		1063
		1064	req->int2 = mode;
		1065	req->sv1 = newSVsv (fh_or_path);
		1066
		1067	if (SvPOK (req->sv1))
		1068	{
		1069	req->type = ix;
		1070	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1071	}
		1072	else
		1073	{
		1074	req->type = EIO_FCHMOD;
		1075	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1076	}
		1077
		1078	REQ_SEND;
		1079	}
		1080
		1081	void
		1082	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1083	PPCODE:
		1084	{
		1085	dREQ;
		1086
		1087	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1088	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1089	req->sv1 = newSVsv (fh_or_path);
		1090
		1091	if (SvPOK (req->sv1))
		1092	{
		1093	req->type = EIO_CHOWN;
		1094	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1095	}
		1096	else
		1097	{
		1098	req->type = EIO_FCHOWN;
		1099	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1100	}
		1101
		1102	REQ_SEND;
		1103	}
		1104
		1105	void
		1106	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1107	PPCODE:
		1108	{
		1109	dREQ;
		1110
		1111	req->type = EIO_READDIR;
		1112	req->sv1 = newSVsv (pathname);
		1113	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1114	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1115
		1116	if (flags & EIO_READDIR_DENTS)
		1117	req->int1 |= EIO_READDIR_CUSTOM2;
		1118
		1119	REQ_SEND;
		1120	}
		1121
		1122	void
1520	aio_unlink (pathname,callback=&PL_sv_undef)	1123	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	1124	ALIAS:
1524	aio_unlink = REQ_UNLINK	1125	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	1126	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	1127	aio_readdir = EIO_READDIR
1527	PPCODE:	1128	PPCODE:
1528	{	1129	{
1529	dREQ;	1130	dREQ;
1530		1131
1531	req->type = ix;	1132	req->type = ix;
…		…
1534		1135
1535	REQ_SEND;	1136	REQ_SEND;
1536	}	1137	}
1537		1138
1538	void	1139	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1140	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	1141	ALIAS:
1544	aio_link = REQ_LINK	1142	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	1143	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	1144	aio_rename = EIO_RENAME
1547	PPCODE:	1145	PPCODE:
1548	{	1146	{
1549	dREQ;	1147	dREQ;
1550		1148
1551	req->type = ix;	1149	req->type = ix;
1552	req->fh = newSVsv (oldpath);	1150	req->sv1 = newSVsv (oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1554	req->sv1 = newSVsv (newpath);
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);	1151	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1152	req->sv2 = newSVsv (newpath);
		1153	req->ptr2 = SvPVbyte_nolen (req->sv2);
1556		1154
1557	REQ_SEND;	1155	REQ_SEND;
1558	}	1156	}
1559		1157
1560	void	1158	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1159	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562	SV8 * pathname
1563	SV * callback
1564	UV mode
1565	UV dev
1566	PPCODE:	1160	PPCODE:
1567	{	1161	{
1568	dREQ;	1162	dREQ;
1569		1163
1570	req->type = REQ_MKNOD;	1164	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);	1165	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1166	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	1167	req->int2 = (mode_t)mode;
1574	req->offs = dev;	1168	req->offs = dev;
1575		1169
1576	REQ_SEND;	1170	REQ_SEND;
1577	}	1171	}
1578		1172
1579	void	1173	void
		1174	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1175	ALIAS:
		1176	aio_mtouch = EIO_MTOUCH
		1177	aio_msync = EIO_MSYNC
		1178	PROTOTYPE: $$$$;$
		1179	PPCODE:
		1180	{
		1181	STRLEN svlen;
		1182	UV len = SvUV (length);
		1183	char *svptr = SvPVbyte (data, svlen);
		1184
		1185	if (offset < 0)
		1186	offset += svlen;
		1187
		1188	if (offset < 0 || offset > svlen)
		1189	croak ("offset outside of scalar");
		1190
		1191	if (!SvOK (length) || len + offset > svlen)
		1192	len = svlen - offset;
		1193
		1194	{
		1195	dREQ;
		1196
		1197	req->type = ix;
		1198	req->size = len;
		1199	req->sv2 = SvREFCNT_inc (data);
		1200	req->ptr2 = (char *)svptr + offset;
		1201	req->int1 = flags;
		1202
		1203	REQ_SEND;
		1204	}
		1205	}
		1206
		1207	void
1580	aio_busy (delay,callback=&PL_sv_undef)	1208	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	1209	PPCODE:
1584	{	1210	{
1585	dREQ;	1211	dREQ;
1586		1212
1587	req->type = REQ_BUSY;	1213	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	1214	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		1215
1591	REQ_SEND;	1216	REQ_SEND;
1592	}	1217	}
1593		1218
1594	void	1219	void
1595	aio_group (callback=&PL_sv_undef)	1220	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$	1221	PROTOTYPE: ;$
1598	PPCODE:	1222	PPCODE:
1599	{	1223	{
1600	dREQ;	1224	dREQ;
1601		1225
1602	req->type = REQ_GROUP;	1226	req->type = EIO_GROUP;
1603		1227
1604	req_send (req);	1228	req_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1229	XPUSHs (req_sv (req, aio_grp_stash));
1606	}	1230	}
1607		1231
1608	void	1232	void
1609	aio_nop (callback=&PL_sv_undef)	1233	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	1234	ALIAS:
		1235	aio_nop = EIO_NOP
		1236	aio_sync = EIO_SYNC
1611	PPCODE:	1237	PPCODE:
1612	{	1238	{
1613	dREQ;	1239	dREQ;
1614		1240
1615	req->type = REQ_NOP;	1241	req->type = ix;
1616		1242
1617	REQ_SEND;	1243	REQ_SEND;
1618	}	1244	}
1619		1245
1620	int	1246	int
1621	aioreq_pri (int pri = 0)	1247	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$	1248	PROTOTYPE: ;$
1623	CODE:	1249	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	1250	RETVAL = next_pri;
1625	if (items > 0)	1251	if (items > 0)
1626	{	1252	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	1253	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	1254	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	1255	next_pri = pri;
1630	}	1256	}
1631	OUTPUT:	1257	OUTPUT:
1632	RETVAL	1258	RETVAL
1633		1259
1634	void	1260	void
1635	aioreq_nice (int nice = 0)	1261	aioreq_nice (int nice = 0)
1636	CODE:	1262	CODE:
1637	nice = next_pri - nice;	1263	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	1264	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	1265	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	1266	next_pri = nice;
1641		1267
1642	void	1268	void
1643	flush ()	1269	flush ()
1644	PROTOTYPE:	1270	PROTOTYPE:
1645	CODE:	1271	CODE:
1646	while (nreqs)	1272	while (eio_nreqs ())
1647	{	1273	{
1648	poll_wait ();	1274	poll_wait ();
1649	poll_cb ();	1275	poll_cb ();
1650	}	1276	}
1651		1277
…		…
1660		1286
1661	int	1287	int
1662	poll_fileno()	1288	poll_fileno()
1663	PROTOTYPE:	1289	PROTOTYPE:
1664	CODE:	1290	CODE:
1665	RETVAL = respipe [0];	1291	RETVAL = s_epipe_fd (&respipe);
1666	OUTPUT:	1292	OUTPUT:
1667	RETVAL	1293	RETVAL
1668		1294
1669	int	1295	int
1670	poll_cb(...)	1296	poll_cb(...)
…		…
1682		1308
1683	int	1309	int
1684	nreqs()	1310	nreqs()
1685	PROTOTYPE:	1311	PROTOTYPE:
1686	CODE:	1312	CODE:
1687	RETVAL = nreqs;	1313	RETVAL = eio_nreqs ();
1688	OUTPUT:	1314	OUTPUT:
1689	RETVAL	1315	RETVAL
1690		1316
1691	int	1317	int
1692	nready()	1318	nready()
1693	PROTOTYPE:	1319	PROTOTYPE:
1694	CODE:	1320	CODE:
1695	RETVAL = get_nready ();	1321	RETVAL = eio_nready ();
1696	OUTPUT:	1322	OUTPUT:
1697	RETVAL	1323	RETVAL
1698		1324
1699	int	1325	int
1700	npending()	1326	npending()
1701	PROTOTYPE:	1327	PROTOTYPE:
1702	CODE:	1328	CODE:
1703	RETVAL = get_npending ();	1329	RETVAL = eio_npending ();
1704	OUTPUT:	1330	OUTPUT:
1705	RETVAL	1331	RETVAL
1706		1332
1707	int	1333	int
1708	nthreads()	1334	nthreads()
1709	PROTOTYPE:	1335	PROTOTYPE:
1710	CODE:	1336	CODE:
1711	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1337	RETVAL = eio_nthreads ();
1712	RETVAL = started;
1713	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714	OUTPUT:	1338	OUTPUT:
1715	RETVAL	1339	RETVAL
1716		1340
		1341	int
		1342	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1343	PROTOTYPE: $$$$
		1344	CODE:
		1345	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1346	RETVAL = posix_fadvise (fh, offset, length, advice);
		1347	#else
		1348	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1349	#endif
		1350	OUTPUT:
		1351	RETVAL
		1352
		1353	ssize_t
		1354	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1355	PROTOTYPE: $$$$
		1356	CODE:
		1357	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1358	OUTPUT:
		1359	RETVAL
		1360
		1361	void
		1362	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1363	PROTOTYPE: $$$$$;$
		1364	PPCODE:
		1365	sv_unmagic (scalar, MMAP_MAGIC);
		1366	{
		1367	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1368	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1369	if (addr == (void *)-1)
		1370	XSRETURN_NO;
		1371
		1372	/* we store the length in mg_obj, as namlen is I32 :/ */
		1373	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1374	->mg_obj = (SV *)length;
		1375
		1376	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1377	if (!(prot & PROT_WRITE))
		1378	SvREADONLY_on (scalar);
		1379
		1380	SvPVX (scalar) = (char *)addr;
		1381	SvCUR_set (scalar, length);
		1382	SvLEN_set (scalar, 0);
		1383	SvPOK_only (scalar);
		1384
		1385	XSRETURN_YES;
		1386	}
		1387
		1388	void
		1389	munmap (SV *scalar)
		1390	PROTOTYPE: $
		1391	CODE:
		1392	sv_unmagic (scalar, MMAP_MAGIC);
		1393
		1394	int
		1395	mlockall (int flags)
		1396	PROTOTYPE: $
		1397	CODE:
		1398	#if _POSIX_MEMLOCK
		1399	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1400	extern int mallopt (int, int);
		1401	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1402	#endif
		1403	mlockall (flags);
		1404	#else
		1405	RETVAL = -1;
		1406	errno = ENOSYS;
		1407	#endif
		1408	OUTPUT:
		1409	RETVAL
		1410
		1411	int
		1412	munlockall ()
		1413	PROTOTYPE:
		1414	CODE:
		1415	#if _POSIX_MEMLOCK
		1416	munlockall ();
		1417	#else
		1418	RETVAL = -1;
		1419	errno = ENOSYS;
		1420	#endif
		1421	OUTPUT:
		1422	RETVAL
		1423
		1424	void _on_next_submit (SV *cb)
		1425	CODE:
		1426	SvREFCNT_dec (on_next_submit);
		1427	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1428
1717	PROTOTYPES: DISABLE	1429	PROTOTYPES: DISABLE
1718		1430
1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1431	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720		1432
1721	void	1433	void
1722	cancel (aio_req_ornot req)	1434	cancel (aio_req_ornot req)
1723	CODE:	1435	CODE:
1724	req_cancel (req);	1436	eio_cancel (req);
1725		1437
1726	void	1438	void
1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1439	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728	CODE:	1440	PPCODE:
		1441	{
		1442	if (GIMME_V != G_VOID)
		1443	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1444
		1445	if (items > 1)
		1446	{
		1447	SV *cb_cv =get_cb (callback);
		1448
1729	SvREFCNT_dec (req->callback);	1449	SvREFCNT_dec (req->callback);
1730	req->callback = newSVsv (callback);	1450	req->callback = SvREFCNT_inc (cb_cv);
		1451	}
		1452	}
1731		1453
1732	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733		1455
1734	void	1456	void
1735	add (aio_req grp, ...)	1457	add (aio_req grp, ...)
1736	PPCODE:	1458	PPCODE:
1737	{	1459	{
1738	int i;	1460	int i;
1739	aio_req req;
1740		1461
1741	if (grp->int1 == 2)	1462	if (grp->int1 == 2)
1742	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1463	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743		1464
1744	for (i = 1; i < items; ++i )	1465	for (i = 1; i < items; ++i )
1745	{	1466	{
		1467	aio_req req;
		1468
1746	if (GIMME_V != G_VOID)	1469	if (GIMME_V != G_VOID)
1747	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1470	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748		1471
1749	req = SvAIO_REQ (ST (i));	1472	req = SvAIO_REQ (ST (i));
1750		1473
1751	if (req)	1474	if (req)
1752	{	1475	eio_grp_add (grp, req);
1753	++grp->size;
1754	req->grp = grp;
1755
1756	req->grp_prev = 0;
1757	req->grp_next = grp->grp_first;
1758
1759	if (grp->grp_first)
1760	grp->grp_first->grp_prev = req;
1761
1762	grp->grp_first = req;
1763	}
1764	}	1476	}
1765	}	1477	}
1766		1478
1767	void	1479	void
1768	cancel_subs (aio_req_ornot req)	1480	cancel_subs (aio_req_ornot req)
…		…
1777	AV *av;	1489	AV *av;
1778		1490
1779	grp->errorno = errno;	1491	grp->errorno = errno;
1780		1492
1781	av = newAV ();	1493	av = newAV ();
		1494	av_extend (av, items - 1);
1782		1495
1783	for (i = 1; i < items; ++i )	1496	for (i = 1; i < items; ++i )
1784	av_push (av, newSVsv (ST (i)));	1497	av_push (av, newSVsv (ST (i)));
1785		1498
1786	SvREFCNT_dec (grp->sv1);	1499	SvREFCNT_dec (grp->sv1);
…		…
1793	grp->errorno = errorno;	1506	grp->errorno = errorno;
1794		1507
1795	void	1508	void
1796	limit (aio_req grp, int limit)	1509	limit (aio_req grp, int limit)
1797	CODE:	1510	CODE:
1798	grp->int2 = limit;	1511	eio_grp_limit (grp, limit);
1799	aio_grp_feed (grp);
1800		1512
1801	void	1513	void
1802	feed (aio_req grp, SV *callback=&PL_sv_undef)	1514	feed (aio_req grp, SV *callback=&PL_sv_undef)
1803	CODE:	1515	CODE:
1804	{	1516	{
1805	SvREFCNT_dec (grp->sv2);	1517	SvREFCNT_dec (grp->sv2);
1806	grp->sv2 = newSVsv (callback);	1518	grp->sv2 = newSVsv (callback);
		1519	grp->feed = aio_grp_feed;
1807		1520
1808	if (grp->int2 <= 0)	1521	if (grp->int2 <= 0)
1809	grp->int2 = 2;	1522	grp->int2 = 2;
1810		1523
1811	aio_grp_feed (grp);	1524	eio_grp_limit (grp, grp->int2);
1812	}	1525	}
1813		1526

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