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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.80 by root, Fri Oct 27 19:17:23 2006 UTC vs.
Revision 1.170 by root, Wed Aug 4 16:09:36 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	#if _XOPEN_SOURCE < 600 || NO_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef ST_NODEV
		171	# define ST_NODEV 0
		172	#endif
		173	#ifndef ST_NOEXEC
		174	# define ST_NOEXEC 0
		175	#endif
		176	#ifndef ST_SYNCHRONOUS
		177	# define ST_SYNCHRONOUS 0
		178	#endif
		179	#ifndef ST_MANDLOCK
		180	# define ST_MANDLOCK 0
		181	#endif
		182	#ifndef ST_WRITE
		183	# define ST_WRITE 0
		184	#endif
		185	#ifndef ST_APPEND
		186	# define ST_APPEND 0
		187	#endif
		188	#ifndef ST_IMMUTABLE
		189	# define ST_IMMUTABLE 0
		190	#endif
		191	#ifndef ST_NOATIME
		192	# define ST_NOATIME 0
		193	#endif
		194	#ifndef ST_NODIRATIME
		195	# define ST_NODIRATIME 0
		196	#endif
		197	#ifndef ST_RELATIME
		198	# define ST_RELATIME 0
		199	#endif
		200
		201	#ifndef MCL_CURRENT
		202	# define MCL_CURRENT 0
		203	#endif
		204	#ifndef MCL_FUTURE
		205	# define MCL_FUTURE 0
		206	#endif
		207
		208	#ifndef MAP_ANONYMOUS
		209	# ifdef MAP_ANON
		210	# define MAP_ANONYMOUS MAP_ANON
43	# else	211	# else
44	# error sendfile support requested but not available	212	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	213	# endif
46	#endif	214	#endif
47		215	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	216	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif
52
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	217	#endif
		218	#ifndef MAP_LOCKED
		219	# define MAP_LOCKED 0
76	#endif	220	#endif
		221	#ifndef MAP_NORESERVE
		222	# define MAP_NORESERVE 0
		223	#endif
		224	#ifndef MAP_POPULATE
		225	# define MAP_POPULATE 0
		226	#endif
		227	#ifndef MAP_NONBLOCK
		228	# define MAP_NONBLOCK 0
		229	#endif
77		230
78	/* buffer size for various temporary buffers */	231	#ifndef PAGESIZE
79	#define AIO_BUFSIZE 65536	232	# define PAGESIZE sysconf (_SC_PAGESIZE)
		233	#endif
80		234
81	#define dBUF \	235	static int req_invoke (eio_req *req);
82	char *aio_buf; \	236	#define EIO_FINISH(req) req_invoke (req)
83	LOCK (wrklock); \	237	static void req_destroy (eio_req *grp);
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	238	#define EIO_DESTROY(req) req_destroy (req)
85	UNLOCK (wrklock); \
86	if (!aio_buf) \
87	return -1;
88		239
89	enum {	240	enum {
90	REQ_QUIT,	241	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};	242	};
102		243
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	244	#include "libeio/eio.c"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		245
106	typedef struct aio_cb
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;
111	SV *fh, *fh2;
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;
119	int type;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123
124	unsigned char flags;
125	unsigned char pri;
126
127	SV *self; /* the perl counterpart of this request, if any */
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;	246	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	247	typedef eio_req *aio_req_ornot;
137		248
138	enum {	249	static SV *on_next_submit;
139	PRI_MIN = -4,	250	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	251	static int max_outstanding;
141		252
142	DEFAULT_PRI = 0,	253	static s_epipe respipe;
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		254
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	255	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	256	static void req_cancel (aio_req req);
297		257
		258	static void want_poll (void)
		259	{
		260	/* write a dummy byte to the pipe so fh becomes ready */
		261	s_epipe_signal (&respipe);
		262	}
		263
		264	static void done_poll (void)
		265	{
		266	/* read any signals sent by the worker threads */
		267	s_epipe_drain (&respipe);
		268	}
		269
298	/* must be called at most once */	270	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	271	static SV *req_sv (aio_req req, HV *stash)
300	{	272	{
301	if (!req->self)	273	if (!req->self)
302	{	274	{
303	req->self = (SV *)newHV ();	275	req->self = (SV *)newHV ();
304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	276	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305	}	277	}
306		278
307	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	279	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308	}	280	}
309		281
310	static aio_req SvAIO_REQ (SV *sv)	282	static aio_req SvAIO_REQ (SV *sv)
311	{	283	{
312	MAGIC *mg;	284	MAGIC *mg;
313		285
314	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	286	if (!SvROK (sv)
		287	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		288	&& SvSTASH (SvRV (sv)) != aio_req_stash
		289	&& !sv_derived_from (sv, "IO::AIO::REQ")))
315	croak ("object of class " AIO_REQ_KLASS " expected");	290	croak ("object of class IO::AIO::REQ expected");
316		291
317	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	292	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318		293
319	return mg ? (aio_req)mg->mg_ptr : 0;	294	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	295	}
321		296
322	static void aio_grp_feed (aio_req grp)	297	static void aio_grp_feed (aio_req grp)
323	{	298	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	299	if (grp->sv2 && SvOK (grp->sv2))
325	{	300	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	301	dSP;
331		302
332	ENTER;	303	ENTER;
333	SAVETMPS;	304	SAVETMPS;
334	PUSHMARK (SP);	305	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	306	XPUSHs (req_sv (grp, aio_grp_stash));
336	PUTBACK;	307	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	308	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	309	SPAGAIN;
339	FREETMPS;	310	FREETMPS;
340	LEAVE;	311	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	312	}
351	}	313	}
352		314
353	static void aio_grp_dec (aio_req grp)	315	static void req_submit (eio_req *req)
354	{	316	{
355	--grp->length;	317	eio_submit (req);
356		318
357	/* call feeder, if applicable */	319	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	320	{
363	req_invoke (grp);	321	dSP;
364	req_free (grp);	322	SV *cb = sv_2mortal (on_next_submit);
		323
		324	on_next_submit = 0;
		325
		326	PUSHMARK (SP);
		327	PUTBACK;
		328	call_sv (cb, G_DISCARD | G_EVAL);
365	}	329	}
366	}	330	}
367		331
368	static void req_invoke (aio_req req)	332	static int req_invoke (eio_req *req)
369	{	333	{
370	dSP;	334	if (req->flags & FLAG_SV2_RO_OFF)
		335	SvREADONLY_off (req->sv2);
371		336
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	337	if (!EIO_CANCELLED (req) && req->callback)
373	{	338	{
		339	dSP;
		340	static SV *sv_result_cache; /* caches the result integer SV */
		341	SV *sv_result;
		342
374	ENTER;	343	ENTER;
375	SAVETMPS;	344	SAVETMPS;
376	PUSHMARK (SP);	345	PUSHMARK (SP);
377	EXTEND (SP, 1);	346	EXTEND (SP, 1);
378		347
		348	/* do not recreate the result IV from scratch each time */
		349	if (expect_true (sv_result_cache))
		350	{
		351	sv_result = sv_result_cache; sv_result_cache = 0;
		352	SvIV_set (sv_result, req->result);
		353	}
		354	else
		355	{
		356	sv_result = newSViv (req->result);
		357	SvREADONLY_on (sv_result);
		358	}
		359
379	switch (req->type)	360	switch (req->type)
380	{	361	{
381	case REQ_READDIR:	362	case EIO_READDIR:
382	{	363	{
383	SV *rv = &PL_sv_undef;	364	SV *rv = &PL_sv_undef;
384		365
385	if (req->result >= 0)	366	if (req->result >= 0)
386	{	367	{
387	int i;	368	int i;
388	char *buf = req->data2ptr;	369	char *names = (char *)req->ptr2;
		370	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
389	AV *av = newAV ();	371	AV *av = newAV ();
390		372
391	av_extend (av, req->result - 1);	373	av_extend (av, req->result - 1);
392		374
393	for (i = 0; i < req->result; ++i)	375	for (i = 0; i < req->result; ++i)
394	{	376	{
395	SV *sv = newSVpv (buf, 0);	377	if (req->int1 & EIO_READDIR_DENTS)
		378	{
		379	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		380
		381	if (req->int1 & EIO_READDIR_CUSTOM2)
		382	{
		383	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		384	AV *avent = newAV ();
		385
		386	av_extend (avent, 2);
		387
		388	if (!sv_type [ent->type])
		389	{
		390	sv_type [ent->type] = newSViv (ent->type);
		391	SvREADONLY_on (sv_type [ent->type]);
		392	}
		393
		394	av_store (avent, 0, namesv);
		395	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		396	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		397
		398	av_store (av, i, newRV_noinc ((SV *)avent));
		399	}
		400	else
397	av_store (av, i, sv);	401	av_store (av, i, namesv);
		402
		403	++ent;
		404	}
		405	else
		406	{
		407	SV *name = newSVpv (names, 0);
		408	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	409	names += SvCUR (name) + 1;
		410	}
399	}	411	}
400		412
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	413	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	414	}
403		415
404	PUSHs (rv);	416	PUSHs (rv);
		417
		418	if (req->int1 & EIO_READDIR_CUSTOM1)
		419	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
405	}	420	}
406	break;	421	break;
407		422
408	case REQ_OPEN:	423	case EIO_OPEN:
409	{	424	{
410	/* convert fd to fh */	425	/* convert fd to fh */
411	SV *fh;	426	SV *fh = &PL_sv_undef;
412		427
413	PUSHs (sv_2mortal (newSViv (req->result)));	428	if (req->result >= 0)
414	PUTBACK;	429	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	430	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	431	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		432	char sym [64];
		433	int symlen;
		434
		435	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		436	gv_init (gv, aio_stash, sym, symlen, 0);
417		437
418	fh = SvREFCNT_inc (POPs);	438	symlen = snprintf (
		439	sym,
		440	sizeof (sym),
		441	"%s&=%d",
		442	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		443	(int)req->result
		444	);
419		445
		446	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		447	fh = (SV *)gv;
		448	}
		449
420	PUSHMARK (SP);	450	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	451	}
423	break;	452	break;
424		453
		454	case EIO_STATVFS:
		455	case EIO_FSTATVFS:
		456	{
		457	SV *rv = &PL_sv_undef;
		458
		459	if (req->result >= 0)
		460	{
		461	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		462	HV *hv = newHV ();
		463
		464	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		465
		466	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		467	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		468	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		469	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		470	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		471	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		472	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		473	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		474	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		475	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		476	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		477	}
		478
		479	PUSHs (rv);
		480	}
		481
		482	break;
		483
425	case REQ_GROUP:	484	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	485	req->int1 = 2; /* mark group as finished */
427		486
428	if (req->data)	487	if (req->sv1)
429	{	488	{
430	int i;	489	int i;
431	AV *av = (AV *)req->data;	490	AV *av = (AV *)req->sv1;
432		491
433	EXTEND (SP, AvFILL (av) + 1);	492	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	493	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	494	PUSHs (*av_fetch (av, i, 0));
436	}	495	}
437	break;	496	break;
438		497
439	case REQ_NOP:	498	case EIO_NOP:
440	case REQ_BUSY:	499	case EIO_BUSY:
441	break;	500	break;
442		501
		502	case EIO_READLINK:
		503	if (req->result > 0)
		504	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		505	break;
		506
		507	case EIO_STAT:
		508	case EIO_LSTAT:
		509	case EIO_FSTAT:
		510	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		511	PL_laststatval = req->result;
		512	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		513	PUSHs (sv_result);
		514	break;
		515
		516	case EIO_READ:
		517	{
		518	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		519	*SvEND (req->sv2) = 0;
		520	SvPOK_only (req->sv2);
		521	SvSETMAGIC (req->sv2);
		522	PUSHs (sv_result);
		523	}
		524	break;
		525
		526	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		527	if (req->result > 0)
		528	SvIV_set (sv_result, 0);
		529	/* FALLTHROUGH */
		530
443	default:	531	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	532	PUSHs (sv_result);
445	break;	533	break;
446	}	534	}
447		535
448	errno = req->errorno;	536	errno = req->errorno;
449		537
450	PUTBACK;	538	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	539	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	540	SPAGAIN;
		541
		542	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		543	SvREFCNT_dec (sv_result);
		544	else
		545	sv_result_cache = sv_result;
453		546
454	FREETMPS;	547	FREETMPS;
455	LEAVE;	548	LEAVE;
		549
		550	PUTBACK;
456	}	551	}
457		552
458	if (req->grp)	553	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	554	}
478		555
479	static void req_free (aio_req req)	556	static void req_destroy (aio_req req)
480	{	557	{
481	if (req->self)	558	if (req->self)
482	{	559	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	560	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	561	SvREFCNT_dec (req->self);
485	}	562	}
486		563
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	564	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	565	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	566	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		567
496	Safefree (req);	568	Safefree (req);
497	}	569	}
498		570
499	static void req_cancel_subs (aio_req grp)	571	static void req_cancel_subs (aio_req grp)
500	{	572	{
501	aio_req sub;	573	aio_req sub;
502		574
503	if (grp->type != REQ_GROUP)	575	if (grp->type != EIO_GROUP)
504	return;	576	return;
505		577
506	SvREFCNT_dec (grp->fh2);	578	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	579	grp->sv2 = 0;
508		580
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	581	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	582	}
512		583
513	static void req_cancel (aio_req req)	584	static void
		585	create_respipe (void)
514	{	586	{
515	req->flags |= FLAG_CANCELLED;	587	if (s_epipe_renew (&respipe))
516		588	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	589	}
519		590
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif
538
539	sigfillset (&fullsigset);
540
541	LOCK (wrklock);
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545	{
546	wrk->prev = &wrk_first;
547	wrk->next = wrk_first.next;
548	wrk_first.next->prev = wrk;
549	wrk_first.next = wrk;
550	++started;
551	}
552	else
553	free (wrk);
554
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
556	UNLOCK (wrklock);
557	}
558
559	static void maybe_start_thread ()
560	{
561	#if 0
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif
565
566	if (started >= wanted)
567	return;
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}
592
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	591	static void poll_wait (void)
638	{	592	{
639	fd_set rfd;
640
641	while (nreqs)	593	while (eio_nreqs ())
642	{	594	{
643	int size;	595	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	596
		597	X_LOCK (reslock);
645	size = res_queue.size;	598	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	599	X_UNLOCK (reslock);
647		600
648	if (size)	601	if (size)
649	return;	602	return;
650		603
651	maybe_start_thread ();	604	etp_maybe_start_thread ();
652		605
653	FD_ZERO(&rfd);	606	s_epipe_wait (&respipe);
654	FD_SET(respipe [0], &rfd);
655
656	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	607	}
658	}	608	}
659		609
660	static int poll_cb (int max)	610	static int poll_cb (void)
661	{	611	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	612	for (;;)
668	{	613	{
669	while (max <= 0 || count < max)	614	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		615
673	LOCK (reslock);	616	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	617	croak (0);
		618
		619	if (!max_outstanding || max_outstanding > eio_nreqs ())
		620	return res;
726		621
727	poll_wait ();	622	poll_wait ();
728
729	max = 0;
730	}	623	}
731
732	return count;
733	}	624	}
734		625
735	static void create_pipe ()	626	static void atfork_child (void)
736	{	627	{
737	if (pipe (respipe))	628	create_respipe ();
738	croak ("unable to initialize result pipe");
739
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}	629	}
746		630
747	/*****************************************************************************/	631	/*****************************************************************************/
748	/* work around various missing functions */
749		632
750	#if !HAVE_PREADWRITE	633	#if !_POSIX_MAPPED_FILES
751	# define pread aio_pread	634	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
752	# define pwrite aio_pwrite	635	# define munmap(addr,length) (errno = ENOSYS, -1)
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;
854
855	#if HAVE_SENDFILE
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858
859	# elif __freebsd
860	/*
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868	if (res < 0 && sbytes)
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif	636	#endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897		637
898	if (res < 0	638	#define MMAP_MAGIC PERL_MAGIC_ext
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900	#if __solaris
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908		639
909	res = 0;	640	static int
		641	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		642	{
		643	int old_errno = errno;
		644	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		645	errno = old_errno;
910		646
911	while (count)	647	mg->mg_obj = 0; /* just in case */
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916		648
917	if (cnt <= 0)	649	SvREADONLY_off (sv);
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922		650
923	cnt = write (ofd, aio_buf, cnt);	651	if (SvPVX (sv) != mg->mg_ptr)
		652	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
924		653
925	if (cnt <= 0)	654	SvCUR_set (sv, 0);
926	{	655	SvPVX (sv) = 0;
927	if (cnt && !res) res = -1;	656	SvOK_off (sv);
928	break;
929	}
930		657
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;	658	return 0;
938	}	659	}
939		660
940	/* read a full directory */	661	static MGVTBL mmap_vtbl = {
941	static void scandir_ (aio_req req, worker *self)	662	0, 0, 0, 0, mmap_free
942	{	663	};
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000		664
1001	/*****************************************************************************/	665	/*****************************************************************************/
1002		666
1003	static void *aio_proc (void *thr_arg)	667	static SV *
		668	get_cb (SV *cb_sv)
1004	{	669	{
1005	aio_req req;	670	SvGETMAGIC (cb_sv);
1006	worker *self = (worker *)thr_arg;	671	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048
1049	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1050	case REQ_FSYNC: req->result = fsync (req->fd); break;
1051	case REQ_READDIR: scandir_ (req, self); break;
1052
1053	case REQ_BUSY:
1054	{
1055	struct timeval tv;
1056
1057	tv.tv_sec = req->fd;
1058	tv.tv_usec = req->fd2;
1059
1060	req->result = select (0, 0, 0, 0, &tv);
1061	}
1062
1063	case REQ_GROUP:
1064	case REQ_NOP:
1065	break;
1066
1067	case REQ_QUIT:
1068	LOCK (wrklock);
1069	worker_free (self);
1070	--started;
1071	UNLOCK (wrklock);
1072	return 0;
1073
1074	default:
1075	req->result = ENOSYS;
1076	break;
1077	}
1078
1079	req->errorno = errno;
1080
1081	LOCK (reslock);
1082
1083	++npending;
1084
1085	if (!reqq_push (&res_queue, req))
1086	/* write a dummy byte to the pipe so fh becomes ready */
1087	write (respipe [1], &respipe, 1);
1088
1089	self->req = 0;
1090	worker_clear (self);
1091
1092	UNLOCK (reslock);
1093	}
1094	}
1095
1096	/*****************************************************************************/
1097
1098	static void atfork_prepare (void)
1099	{
1100	LOCK (wrklock);
1101	LOCK (reqlock);
1102	LOCK (reslock);
1103	#if !HAVE_PREADWRITE
1104	LOCK (preadwritelock);
1105	#endif
1106	#if !HAVE_READDIR_R
1107	LOCK (readdirlock);
1108	#endif
1109	}
1110
1111	static void atfork_parent (void)
1112	{
1113	#if !HAVE_READDIR_R
1114	UNLOCK (readdirlock);
1115	#endif
1116	#if !HAVE_PREADWRITE
1117	UNLOCK (preadwritelock);
1118	#endif
1119	UNLOCK (reslock);
1120	UNLOCK (reqlock);
1121	UNLOCK (wrklock);
1122	}
1123
1124	static void atfork_child (void)
1125	{
1126	aio_req prv;
1127
1128	while (prv = reqq_shift (&req_queue))
1129	req_free (prv);
1130
1131	while (prv = reqq_shift (&res_queue))
1132	req_free (prv);
1133
1134	while (wrk_first.next != &wrk_first)
1135	{
1136	worker *wrk = wrk_first.next;
1137
1138	if (wrk->req)
1139	req_free (wrk->req);
1140
1141	worker_clear (wrk);
1142	worker_free (wrk);
1143	}
1144
1145	started = 0;
1146	nreqs = 0;
1147
1148	close (respipe [0]);
1149	close (respipe [1]);
1150	create_pipe ();
1151
1152	atfork_parent ();
1153	}	672	}
1154		673
1155	#define dREQ \	674	#define dREQ \
		675	SV *cb_cv; \
1156	aio_req req; \	676	aio_req req; \
1157	int req_pri = next_pri; \	677	int req_pri = next_pri; \
1158	next_pri = DEFAULT_PRI + PRI_BIAS; \	678	next_pri = EIO_PRI_DEFAULT; \
1159	\	679	\
1160	if (SvOK (callback) && !SvROK (callback)) \	680	cb_cv = get_cb (callback); \
1161	croak ("callback must be undef or of reference type"); \
1162	\	681	\
1163	Newz (0, req, 1, aio_cb); \	682	Newz (0, req, 1, eio_req); \
1164	if (!req) \	683	if (!req) \
1165	croak ("out of memory during aio_req allocation"); \	684	croak ("out of memory during eio_req allocation"); \
1166	\	685	\
1167	req->callback = newSVsv (callback); \	686	req->callback = SvREFCNT_inc (cb_cv); \
1168	req->pri = req_pri	687	req->pri = req_pri
1169		688
1170	#define REQ_SEND \	689	#define REQ_SEND \
		690	PUTBACK; \
1171	req_send (req); \	691	req_submit (req); \
		692	SPAGAIN; \
1172	\	693	\
1173	if (GIMME_V != G_VOID) \	694	if (GIMME_V != G_VOID) \
1174	XPUSHs (req_sv (req, AIO_REQ_KLASS));	695	XPUSHs (req_sv (req, aio_req_stash));
1175		696
1176	MODULE = IO::AIO PACKAGE = IO::AIO	697	MODULE = IO::AIO PACKAGE = IO::AIO
1177		698
1178	PROTOTYPES: ENABLE	699	PROTOTYPES: ENABLE
1179		700
1180	BOOT:	701	BOOT:
1181	{	702	{
		703	static const struct {
		704	const char *name;
		705	IV iv;
		706	} *civ, const_iv[] = {
		707	# define const_niv(name, value) { # name, (IV) value },
		708	# define const_iv(name) { # name, (IV) name },
		709	# define const_eio(name) { # name, (IV) EIO_ ## name },
		710	const_iv (EXDEV)
		711	const_iv (ENOSYS)
		712	const_iv (O_RDONLY)
		713	const_iv (O_WRONLY)
		714	const_iv (O_RDWR)
		715	const_iv (O_CREAT)
		716	const_iv (O_TRUNC)
		717	const_iv (O_EXCL)
		718	const_iv (O_APPEND)
		719	#ifndef _WIN32
		720	const_iv (S_IFIFO)
		721	#endif
		722	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		723	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		724	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		725	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		726	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		727	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		728
		729	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		730	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		731	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		732	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		733	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		734
		735	const_iv (ST_RDONLY)
		736	const_iv (ST_NOSUID)
		737	const_iv (ST_NODEV)
		738	const_iv (ST_NOEXEC)
		739	const_iv (ST_SYNCHRONOUS)
		740	const_iv (ST_MANDLOCK)
		741	const_iv (ST_WRITE)
		742	const_iv (ST_APPEND)
		743	const_iv (ST_IMMUTABLE)
		744	const_iv (ST_NOATIME)
		745	const_iv (ST_NODIRATIME)
		746	const_iv (ST_RELATIME)
		747
		748	const_iv (PROT_EXEC)
		749	const_iv (PROT_NONE)
		750	const_iv (PROT_READ)
		751	const_iv (PROT_WRITE)
		752
		753	/*const_iv (MAP_FIXED)*/
		754	const_iv (MAP_PRIVATE)
		755	const_iv (MAP_SHARED)
		756	const_iv (MAP_ANONYMOUS)
		757
		758	/* linuxish */
		759	const_iv (MAP_HUGETLB)
		760	const_iv (MAP_LOCKED)
		761	const_iv (MAP_NORESERVE)
		762	const_iv (MAP_POPULATE)
		763	const_iv (MAP_NONBLOCK)
		764
		765	const_iv (MCL_FUTURE)
		766	const_iv (MCL_CURRENT)
		767
		768	const_eio (MS_ASYNC)
		769	const_eio (MS_INVALIDATE)
		770	const_eio (MS_SYNC)
		771
		772	const_eio (MT_MODIFY)
		773
		774	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		775	const_eio (SYNC_FILE_RANGE_WRITE)
		776	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		777
		778	const_eio (READDIR_DENTS)
		779	const_eio (READDIR_DIRS_FIRST)
		780	const_eio (READDIR_STAT_ORDER)
		781	const_eio (READDIR_FOUND_UNKNOWN)
		782
		783	const_eio (DT_UNKNOWN)
		784	const_eio (DT_FIFO)
		785	const_eio (DT_CHR)
		786	const_eio (DT_DIR)
		787	const_eio (DT_BLK)
		788	const_eio (DT_REG)
		789	const_eio (DT_LNK)
		790	const_eio (DT_SOCK)
		791	const_eio (DT_WHT)
		792	};
		793
1182	HV *stash = gv_stashpv ("IO::AIO", 1);	794	aio_stash = gv_stashpv ("IO::AIO" , 1);
1183	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	795	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1184	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	796	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1185	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1186		797
		798	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		799	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		800
		801	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		802
1187	create_pipe ();	803	create_respipe ();
1188	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1189		804
1190	start_thread ();	805	if (eio_init (want_poll, done_poll) < 0)
		806	croak ("IO::AIO: unable to initialise eio library");
		807
		808	/* atfork child called in fifo order, so before eio's handler */
		809	X_THREAD_ATFORK (0, 0, atfork_child);
1191	}	810	}
		811
		812	void
		813	max_poll_reqs (int nreqs)
		814	PROTOTYPE: $
		815	CODE:
		816	eio_set_max_poll_reqs (nreqs);
		817
		818	void
		819	max_poll_time (double nseconds)
		820	PROTOTYPE: $
		821	CODE:
		822	eio_set_max_poll_time (nseconds);
1192		823
1193	void	824	void
1194	min_parallel (int nthreads)	825	min_parallel (int nthreads)
1195	PROTOTYPE: $	826	PROTOTYPE: $
		827	CODE:
		828	eio_set_min_parallel (nthreads);
1196		829
1197	void	830	void
1198	max_parallel (int nthreads)	831	max_parallel (int nthreads)
1199	PROTOTYPE: $	832	PROTOTYPE: $
		833	CODE:
		834	eio_set_max_parallel (nthreads);
1200		835
1201	int	836	void
		837	max_idle (int nthreads)
		838	PROTOTYPE: $
		839	CODE:
		840	eio_set_max_idle (nthreads);
		841
		842	void
1202	max_outstanding (int maxreqs)	843	max_outstanding (int maxreqs)
1203	PROTOTYPE: $	844	PROTOTYPE: $
1204	CODE:	845	CODE:
1205	RETVAL = max_outstanding;
1206	max_outstanding = maxreqs;	846	max_outstanding = maxreqs;
1207	OUTPUT:
1208	RETVAL
1209		847
1210	void	848	void
1211	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	849	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1212	SV * pathname
1213	int flags
1214	int mode
1215	SV * callback
1216	PROTOTYPE: $$$;$	850	PROTOTYPE: $$$;$
1217	PPCODE:	851	PPCODE:
1218	{	852	{
1219	dREQ;	853	dREQ;
1220		854
1221	req->type = REQ_OPEN;	855	req->type = EIO_OPEN;
1222	req->data = newSVsv (pathname);	856	req->sv1 = newSVsv (pathname);
1223	req->dataptr = SvPVbyte_nolen (req->data);	857	req->ptr1 = SvPVbyte_nolen (req->sv1);
1224	req->fd = flags;	858	req->int1 = flags;
1225	req->mode = mode;	859	req->int2 = mode;
1226		860
1227	REQ_SEND;	861	REQ_SEND;
1228	}	862	}
1229		863
1230	void	864	void
1231	aio_close (fh,callback=&PL_sv_undef)	865	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1232	SV * fh
1233	SV * callback
1234	PROTOTYPE: $;$	866	PROTOTYPE: $;$
1235	ALIAS:	867	ALIAS:
1236	aio_close = REQ_CLOSE
1237	aio_fsync = REQ_FSYNC	868	aio_fsync = EIO_FSYNC
1238	aio_fdatasync = REQ_FDATASYNC	869	aio_fdatasync = EIO_FDATASYNC
1239	PPCODE:	870	PPCODE:
1240	{	871	{
		872	int fd = s_fileno_croak (fh, 0);
1241	dREQ;	873	dREQ;
1242		874
1243	req->type = ix;	875	req->type = ix;
1244	req->fh = newSVsv (fh);	876	req->sv1 = newSVsv (fh);
1245	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	877	req->int1 = fd;
1246		878
1247	REQ_SEND (req);	879	REQ_SEND (req);
1248	}	880	}
1249		881
1250	void	882	void
		883	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		884	PROTOTYPE: $$$$;$
		885	PPCODE:
		886	{
		887	int fd = s_fileno_croak (fh, 0);
		888	dREQ;
		889
		890	req->type = EIO_SYNC_FILE_RANGE;
		891	req->sv1 = newSVsv (fh);
		892	req->int1 = fd;
		893	req->offs = offset;
		894	req->size = nbytes;
		895	req->int2 = flags;
		896
		897	REQ_SEND (req);
		898	}
		899
		900	void
		901	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		902	PROTOTYPE: $;$
		903	PPCODE:
		904	{
		905	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		906	int fd = s_fileno_croak (fh, 0);
		907	dREQ;
		908
		909	if (close_pipe < 0)
		910	{
		911	int pipefd [2];
		912
		913	if (pipe (pipefd) < 0
		914	|| close (pipefd [1]) < 0
		915	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		916	abort (); /*D*/
		917
		918	close_pipe = pipefd [0];
		919	}
		920
		921	req->type = EIO_DUP2;
		922	req->int1 = close_pipe;
		923	req->sv2 = newSVsv (fh);
		924	req->int2 = fd;
		925
		926	REQ_SEND (req);
		927	}
		928
		929	void
1251	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	930	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1252	SV * fh
1253	UV offset
1254	UV length
1255	SV * data
1256	UV dataoffset
1257	SV * callback
1258	ALIAS:	931	ALIAS:
1259	aio_read = REQ_READ	932	aio_read = EIO_READ
1260	aio_write = REQ_WRITE	933	aio_write = EIO_WRITE
1261	PROTOTYPE: $$$$$;$	934	PROTOTYPE: $$$$$;$
1262	PPCODE:	935	PPCODE:
1263	{	936	{
1264	aio_req req;
1265	STRLEN svlen;	937	STRLEN svlen;
		938	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1266	char *svptr = SvPVbyte (data, svlen);	939	char *svptr = SvPVbyte (data, svlen);
1267		940	UV len = SvUV (length);
1268	SvUPGRADE (data, SVt_PV);
1269	SvPOK_on (data);
1270		941
1271	if (dataoffset < 0)	942	if (dataoffset < 0)
1272	dataoffset += svlen;	943	dataoffset += svlen;
1273		944
1274	if (dataoffset < 0 || dataoffset > svlen)	945	if (dataoffset < 0 || dataoffset > svlen)
1275	croak ("data offset outside of string");	946	croak ("dataoffset outside of data scalar");
1276		947
1277	if (ix == REQ_WRITE)	948	if (ix == EIO_WRITE)
1278	{	949	{
1279	/* write: check length and adjust. */	950	/* write: check length and adjust. */
1280	if (length < 0 || length + dataoffset > svlen)	951	if (!SvOK (length) || len + dataoffset > svlen)
1281	length = svlen - dataoffset;	952	len = svlen - dataoffset;
1282	}	953	}
1283	else	954	else
1284	{	955	{
1285	/* read: grow scalar as necessary */	956	/* read: check type and grow scalar as necessary */
		957	SvUPGRADE (data, SVt_PV);
1286	svptr = SvGROW (data, length + dataoffset);	958	svptr = SvGROW (data, len + dataoffset + 1);
1287	}	959	}
1288
1289	if (length < 0)
1290	croak ("length must not be negative");
1291		960
1292	{	961	{
1293	dREQ;	962	dREQ;
1294		963
1295	req->type = ix;	964	req->type = ix;
1296	req->fh = newSVsv (fh);	965	req->sv1 = newSVsv (fh);
1297	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	966	req->int1 = fd;
1298	: IoOFP (sv_2io (fh)));	967	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1299	req->offset = offset;	968	req->size = len;
1300	req->length = length;
1301	req->data = SvREFCNT_inc (data);	969	req->sv2 = SvREFCNT_inc (data);
1302	req->dataptr = (char *)svptr + dataoffset;	970	req->ptr2 = (char *)svptr + dataoffset;
		971	req->stroffset = dataoffset;
1303		972
1304	if (!SvREADONLY (data))	973	if (!SvREADONLY (data))
1305	{	974	{
1306	SvREADONLY_on (data);	975	SvREADONLY_on (data);
1307	req->data2ptr = (void *)data;	976	req->flags |= FLAG_SV2_RO_OFF;
1308	}	977	}
1309		978
1310	REQ_SEND;	979	REQ_SEND;
1311	}	980	}
1312	}	981	}
1313		982
1314	void	983	void
		984	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		985	PROTOTYPE: $$;$
		986	PPCODE:
		987	{
		988	SV *data;
		989	dREQ;
		990
		991	req->type = EIO_READLINK;
		992	req->sv1 = newSVsv (path);
		993	req->ptr1 = SvPVbyte_nolen (req->sv1);
		994
		995	REQ_SEND;
		996	}
		997
		998	void
1315	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	999	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1316	SV * out_fh
1317	SV * in_fh
1318	UV in_offset
1319	UV length
1320	SV * callback
1321	PROTOTYPE: $$$$;$	1000	PROTOTYPE: $$$$;$
1322	PPCODE:	1001	PPCODE:
1323	{	1002	{
		1003	int ifd = s_fileno_croak (in_fh , 0);
		1004	int ofd = s_fileno_croak (out_fh, 1);
1324	dREQ;	1005	dREQ;
1325		1006
1326	req->type = REQ_SENDFILE;	1007	req->type = EIO_SENDFILE;
1327	req->fh = newSVsv (out_fh);	1008	req->sv1 = newSVsv (out_fh);
1328	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1009	req->int1 = ofd;
1329	req->fh2 = newSVsv (in_fh);	1010	req->sv2 = newSVsv (in_fh);
1330	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1011	req->int2 = ifd;
1331	req->offset = in_offset;	1012	req->offs = in_offset;
1332	req->length = length;	1013	req->size = length;
1333		1014
1334	REQ_SEND;	1015	REQ_SEND;
1335	}	1016	}
1336		1017
1337	void	1018	void
1338	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1019	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1339	SV * fh
1340	UV offset
1341	IV length
1342	SV * callback
1343	PROTOTYPE: $$$;$	1020	PROTOTYPE: $$$;$
1344	PPCODE:	1021	PPCODE:
1345	{	1022	{
		1023	int fd = s_fileno_croak (fh, 0);
1346	dREQ;	1024	dREQ;
1347		1025
1348	req->type = REQ_READAHEAD;	1026	req->type = EIO_READAHEAD;
1349	req->fh = newSVsv (fh);	1027	req->sv1 = newSVsv (fh);
1350	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1028	req->int1 = fd;
1351	req->offset = offset;	1029	req->offs = offset;
1352	req->length = length;	1030	req->size = length;
1353		1031
1354	REQ_SEND;	1032	REQ_SEND;
1355	}	1033	}
1356		1034
1357	void	1035	void
1358	aio_stat (fh_or_path,callback=&PL_sv_undef)	1036	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1359	SV * fh_or_path
1360	SV * callback
1361	ALIAS:	1037	ALIAS:
1362	aio_stat = REQ_STAT	1038	aio_stat = EIO_STAT
1363	aio_lstat = REQ_LSTAT	1039	aio_lstat = EIO_LSTAT
		1040	aio_statvfs = EIO_STATVFS
1364	PPCODE:	1041	PPCODE:
1365	{	1042	{
1366	dREQ;	1043	dREQ;
1367		1044
1368	New (0, req->statdata, 1, Stat_t);	1045	req->sv1 = newSVsv (fh_or_path);
1369	if (!req->statdata)
1370	{
1371	req_free (req);
1372	croak ("out of memory during aio_req->statdata allocation");
1373	}
1374		1046
1375	if (SvPOK (fh_or_path))	1047	if (SvPOK (req->sv1))
1376	{	1048	{
1377	req->type = ix;	1049	req->type = ix;
1378	req->data = newSVsv (fh_or_path);
1379	req->dataptr = SvPVbyte_nolen (req->data);	1050	req->ptr1 = SvPVbyte_nolen (req->sv1);
1380	}	1051	}
1381	else	1052	else
1382	{	1053	{
1383	req->type = REQ_FSTAT;	1054	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1384	req->fh = newSVsv (fh_or_path);
1385	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1055	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1386	}	1056	}
1387		1057
1388	REQ_SEND;	1058	REQ_SEND;
1389	}	1059	}
1390		1060
1391	void	1061	void
		1062	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1063	PPCODE:
		1064	{
		1065	dREQ;
		1066
		1067	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1068	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1069	req->sv1 = newSVsv (fh_or_path);
		1070
		1071	if (SvPOK (req->sv1))
		1072	{
		1073	req->type = EIO_UTIME;
		1074	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1075	}
		1076	else
		1077	{
		1078	req->type = EIO_FUTIME;
		1079	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1080	}
		1081
		1082	REQ_SEND;
		1083	}
		1084
		1085	void
		1086	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1087	PPCODE:
		1088	{
		1089	dREQ;
		1090
		1091	req->sv1 = newSVsv (fh_or_path);
		1092	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1093
		1094	if (SvPOK (req->sv1))
		1095	{
		1096	req->type = EIO_TRUNCATE;
		1097	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1098	}
		1099	else
		1100	{
		1101	req->type = EIO_FTRUNCATE;
		1102	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1103	}
		1104
		1105	REQ_SEND;
		1106	}
		1107
		1108	void
		1109	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1110	ALIAS:
		1111	aio_chmod = EIO_CHMOD
		1112	aio_mkdir = EIO_MKDIR
		1113	PPCODE:
		1114	{
		1115	dREQ;
		1116
		1117	req->int2 = mode;
		1118	req->sv1 = newSVsv (fh_or_path);
		1119
		1120	if (SvPOK (req->sv1))
		1121	{
		1122	req->type = ix;
		1123	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1124	}
		1125	else
		1126	{
		1127	req->type = EIO_FCHMOD;
		1128	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1129	}
		1130
		1131	REQ_SEND;
		1132	}
		1133
		1134	void
		1135	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1136	PPCODE:
		1137	{
		1138	dREQ;
		1139
		1140	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1141	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1142	req->sv1 = newSVsv (fh_or_path);
		1143
		1144	if (SvPOK (req->sv1))
		1145	{
		1146	req->type = EIO_CHOWN;
		1147	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1148	}
		1149	else
		1150	{
		1151	req->type = EIO_FCHOWN;
		1152	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1153	}
		1154
		1155	REQ_SEND;
		1156	}
		1157
		1158	void
		1159	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	dREQ;
		1163
		1164	req->type = EIO_READDIR;
		1165	req->sv1 = newSVsv (pathname);
		1166	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1167	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1168
		1169	if (flags & EIO_READDIR_DENTS)
		1170	req->int1 |= EIO_READDIR_CUSTOM2;
		1171
		1172	REQ_SEND;
		1173	}
		1174
		1175	void
1392	aio_unlink (pathname,callback=&PL_sv_undef)	1176	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1393	SV * pathname
1394	SV * callback
1395	ALIAS:	1177	ALIAS:
1396	aio_unlink = REQ_UNLINK	1178	aio_unlink = EIO_UNLINK
1397	aio_rmdir = REQ_RMDIR	1179	aio_rmdir = EIO_RMDIR
1398	aio_readdir = REQ_READDIR	1180	aio_readdir = EIO_READDIR
1399	PPCODE:	1181	PPCODE:
1400	{	1182	{
1401	dREQ;	1183	dREQ;
1402		1184
1403	req->type = ix;	1185	req->type = ix;
1404	req->data = newSVsv (pathname);	1186	req->sv1 = newSVsv (pathname);
1405	req->dataptr = SvPVbyte_nolen (req->data);	1187	req->ptr1 = SvPVbyte_nolen (req->sv1);
1406		1188
1407	REQ_SEND;	1189	REQ_SEND;
1408	}	1190	}
1409		1191
1410	void	1192	void
1411	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1193	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1412	SV * oldpath
1413	SV * newpath
1414	SV * callback
1415	ALIAS:	1194	ALIAS:
1416	aio_link = REQ_LINK	1195	aio_link = EIO_LINK
1417	aio_symlink = REQ_SYMLINK	1196	aio_symlink = EIO_SYMLINK
1418	aio_rename = REQ_RENAME	1197	aio_rename = EIO_RENAME
1419	PPCODE:	1198	PPCODE:
1420	{	1199	{
1421	dREQ;	1200	dREQ;
1422		1201
1423	req->type = ix;	1202	req->type = ix;
1424	req->fh = newSVsv (oldpath);	1203	req->sv1 = newSVsv (oldpath);
1425	req->data2ptr = SvPVbyte_nolen (req->fh);	1204	req->ptr1 = SvPVbyte_nolen (req->sv1);
1426	req->data = newSVsv (newpath);	1205	req->sv2 = newSVsv (newpath);
1427	req->dataptr = SvPVbyte_nolen (req->data);	1206	req->ptr2 = SvPVbyte_nolen (req->sv2);
1428		1207
1429	REQ_SEND;	1208	REQ_SEND;
1430	}	1209	}
1431		1210
1432	void	1211	void
1433	aio_busy (delay,callback=&PL_sv_undef)	1212	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1434	double delay
1435	SV * callback
1436	PPCODE:	1213	PPCODE:
1437	{	1214	{
1438	dREQ;	1215	dREQ;
1439		1216
1440	req->type = REQ_BUSY;	1217	req->type = EIO_MKNOD;
1441	req->fd = delay < 0. ? 0 : delay;	1218	req->sv1 = newSVsv (pathname);
1442	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1219	req->ptr1 = SvPVbyte_nolen (req->sv1);
1443		1220	req->int2 = (mode_t)mode;
		1221	req->offs = dev;
		1222
1444	REQ_SEND;	1223	REQ_SEND;
1445	}	1224	}
1446		1225
1447	void	1226	void
		1227	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1228	ALIAS:
		1229	aio_mtouch = EIO_MTOUCH
		1230	aio_msync = EIO_MSYNC
		1231	PROTOTYPE: $$$$;$
		1232	PPCODE:
		1233	{
		1234	STRLEN svlen;
		1235	UV len = SvUV (length);
		1236	char *svptr = SvPVbyte (data, svlen);
		1237
		1238	if (offset < 0)
		1239	offset += svlen;
		1240
		1241	if (offset < 0 || offset > svlen)
		1242	croak ("offset outside of scalar");
		1243
		1244	if (!SvOK (length) || len + offset > svlen)
		1245	len = svlen - offset;
		1246
		1247	{
		1248	dREQ;
		1249
		1250	req->type = ix;
		1251	req->size = len;
		1252	req->sv2 = SvREFCNT_inc (data);
		1253	req->ptr2 = (char *)svptr + offset;
		1254	req->int1 = flags;
		1255
		1256	REQ_SEND;
		1257	}
		1258	}
		1259
		1260	void
		1261	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1262	PPCODE:
		1263	{
		1264	dREQ;
		1265
		1266	req->type = EIO_BUSY;
		1267	req->nv1 = delay < 0. ? 0. : delay;
		1268
		1269	REQ_SEND;
		1270	}
		1271
		1272	void
1448	aio_group (callback=&PL_sv_undef)	1273	aio_group (SV *callback=&PL_sv_undef)
1449	SV * callback
1450	PROTOTYPE: ;$	1274	PROTOTYPE: ;$
1451	PPCODE:	1275	PPCODE:
1452	{	1276	{
1453	dREQ;	1277	dREQ;
1454		1278
1455	req->type = REQ_GROUP;	1279	req->type = EIO_GROUP;
		1280
1456	req_send (req);	1281	req_submit (req);
1457
1458	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1282	XPUSHs (req_sv (req, aio_grp_stash));
1459	}	1283	}
1460		1284
1461	void	1285	void
1462	aio_nop (callback=&PL_sv_undef)	1286	aio_nop (SV *callback=&PL_sv_undef)
1463	SV * callback	1287	ALIAS:
		1288	aio_nop = EIO_NOP
		1289	aio_sync = EIO_SYNC
1464	PPCODE:	1290	PPCODE:
1465	{	1291	{
1466	dREQ;	1292	dREQ;
1467		1293
1468	req->type = REQ_NOP;	1294	req->type = ix;
1469		1295
1470	REQ_SEND;	1296	REQ_SEND;
1471	}	1297	}
1472		1298
1473	int	1299	int
1474	aioreq_pri (int pri = 0)	1300	aioreq_pri (int pri = 0)
1475	PROTOTYPE: ;$	1301	PROTOTYPE: ;$
1476	CODE:	1302	CODE:
1477	RETVAL = next_pri - PRI_BIAS;	1303	RETVAL = next_pri;
1478	if (items > 0)	1304	if (items > 0)
1479	{	1305	{
1480	if (pri < PRI_MIN) pri = PRI_MIN;	1306	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1481	if (pri > PRI_MAX) pri = PRI_MAX;	1307	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1482	next_pri = pri + PRI_BIAS;	1308	next_pri = pri;
1483	}	1309	}
1484	OUTPUT:	1310	OUTPUT:
1485	RETVAL	1311	RETVAL
1486		1312
1487	void	1313	void
1488	aioreq_nice (int nice = 0)	1314	aioreq_nice (int nice = 0)
1489	CODE:	1315	CODE:
1490	nice = next_pri - nice;	1316	nice = next_pri - nice;
1491	if (nice < PRI_MIN) nice = PRI_MIN;	1317	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1492	if (nice > PRI_MAX) nice = PRI_MAX;	1318	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1493	next_pri = nice + PRI_BIAS;	1319	next_pri = nice;
1494		1320
1495	void	1321	void
1496	flush ()	1322	flush ()
1497	PROTOTYPE:	1323	PROTOTYPE:
1498	CODE:	1324	CODE:
1499	while (nreqs)	1325	while (eio_nreqs ())
1500	{	1326	{
1501	poll_wait ();	1327	poll_wait ();
1502	poll_cb (0);	1328	poll_cb ();
1503	}	1329	}
1504		1330
1505	void	1331	int
1506	poll()	1332	poll()
1507	PROTOTYPE:	1333	PROTOTYPE:
1508	CODE:	1334	CODE:
1509	if (nreqs)
1510	{
1511	poll_wait ();	1335	poll_wait ();
1512	poll_cb (0);	1336	RETVAL = poll_cb ();
1513	}	1337	OUTPUT:
		1338	RETVAL
1514		1339
1515	int	1340	int
1516	poll_fileno()	1341	poll_fileno()
1517	PROTOTYPE:	1342	PROTOTYPE:
1518	CODE:	1343	CODE:
1519	RETVAL = respipe [0];	1344	RETVAL = s_epipe_fd (&respipe);
1520	OUTPUT:	1345	OUTPUT:
1521	RETVAL	1346	RETVAL
1522		1347
1523	int	1348	int
1524	poll_cb(...)	1349	poll_cb(...)
1525	PROTOTYPE:	1350	PROTOTYPE:
1526	CODE:	1351	CODE:
1527	RETVAL = poll_cb (0);	1352	RETVAL = poll_cb ();
1528	OUTPUT:	1353	OUTPUT:
1529	RETVAL	1354	RETVAL
1530		1355
1531	int
1532	poll_some(int max = 0)
1533	PROTOTYPE: $
1534	CODE:
1535	RETVAL = poll_cb (max);
1536	OUTPUT:
1537	RETVAL
1538
1539	void	1356	void
1540	poll_wait()	1357	poll_wait()
1541	PROTOTYPE:	1358	PROTOTYPE:
1542	CODE:	1359	CODE:
1543	if (nreqs)
1544	poll_wait ();	1360	poll_wait ();
1545		1361
1546	int	1362	int
1547	nreqs()	1363	nreqs()
1548	PROTOTYPE:	1364	PROTOTYPE:
1549	CODE:	1365	CODE:
1550	RETVAL = nreqs;	1366	RETVAL = eio_nreqs ();
1551	OUTPUT:	1367	OUTPUT:
1552	RETVAL	1368	RETVAL
1553		1369
1554	int	1370	int
1555	nready()	1371	nready()
1556	PROTOTYPE:	1372	PROTOTYPE:
1557	CODE:	1373	CODE:
1558	RETVAL = get_nready ();	1374	RETVAL = eio_nready ();
1559	OUTPUT:	1375	OUTPUT:
1560	RETVAL	1376	RETVAL
1561		1377
1562	int	1378	int
1563	npending()	1379	npending()
1564	PROTOTYPE:	1380	PROTOTYPE:
1565	CODE:	1381	CODE:
1566	RETVAL = get_npending ();	1382	RETVAL = eio_npending ();
1567	OUTPUT:	1383	OUTPUT:
1568	RETVAL	1384	RETVAL
1569		1385
		1386	int
		1387	nthreads()
		1388	PROTOTYPE:
		1389	CODE:
		1390	RETVAL = eio_nthreads ();
		1391	OUTPUT:
		1392	RETVAL
		1393
		1394	int
		1395	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1396	PROTOTYPE: $$$$
		1397	CODE:
		1398	RETVAL = posix_fadvise (fh, offset, length, advice);
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	ssize_t
		1403	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1404	PROTOTYPE: $$$$
		1405	CODE:
		1406	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1407	OUTPUT:
		1408	RETVAL
		1409
		1410	void
		1411	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1412	PROTOTYPE: $$$$$;$
		1413	PPCODE:
		1414	sv_unmagic (scalar, MMAP_MAGIC);
		1415	{
		1416	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1417	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1418	if (addr == (void *)-1)
		1419	XSRETURN_NO;
		1420
		1421	sv_force_normal (scalar);
		1422
		1423	/* we store the length in mg_obj, as namlen is I32 :/ */
		1424	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1425	->mg_obj = (SV *)length;
		1426
		1427	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1428
		1429	if (!(prot & PROT_WRITE))
		1430	SvREADONLY_on (scalar);
		1431
		1432	if (SvLEN (scalar))
		1433	Safefree (SvPVX (scalar));
		1434
		1435	SvPVX (scalar) = (char *)addr;
		1436	SvCUR_set (scalar, length);
		1437	SvLEN_set (scalar, 0);
		1438	SvPOK_only (scalar);
		1439
		1440	XSRETURN_YES;
		1441	}
		1442
		1443	void
		1444	munmap (SV *scalar)
		1445	PROTOTYPE: $
		1446	CODE:
		1447	sv_unmagic (scalar, MMAP_MAGIC);
		1448
		1449	int
		1450	madvise (SV *scalar, off_t offset, off_t length, IV advice)
		1451	PROTOTYPE: $$$$
		1452	CODE:
		1453	{
		1454	char *addr = SvPV_nolen (scalar) + offset;
		1455
		1456	if (!SvOK (ST (2)))
		1457	length = SvCUR (scalar) - offset;
		1458
		1459	if (addr >= SvEND (scalar) || length <= 0)
		1460	XSRETURN_EMPTY;
		1461
		1462	RETVAL = posix_madvise (addr, length, advice);
		1463	}
		1464	OUTPUT:
		1465	RETVAL
		1466
		1467	int
		1468	mlockall (int flags)
		1469	PROTOTYPE: $
		1470	CODE:
		1471	#if _POSIX_MEMLOCK
		1472	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1473	extern int mallopt (int, int);
		1474	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1475	#endif
		1476	mlockall (flags);
		1477	#else
		1478	RETVAL = -1;
		1479	errno = ENOSYS;
		1480	#endif
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	int
		1485	munlockall ()
		1486	PROTOTYPE:
		1487	CODE:
		1488	#if _POSIX_MEMLOCK
		1489	munlockall ();
		1490	#else
		1491	RETVAL = -1;
		1492	errno = ENOSYS;
		1493	#endif
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void _on_next_submit (SV *cb)
		1498	CODE:
		1499	SvREFCNT_dec (on_next_submit);
		1500	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1501
1570	PROTOTYPES: DISABLE	1502	PROTOTYPES: DISABLE
1571		1503
1572	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1504	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1573		1505
1574	void	1506	void
1575	cancel (aio_req_ornot req)	1507	cancel (aio_req_ornot req)
1576	CODE:	1508	CODE:
1577	req_cancel (req);	1509	eio_cancel (req);
1578		1510
1579	void	1511	void
1580	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1512	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1581	CODE:	1513	PPCODE:
		1514	{
		1515	if (GIMME_V != G_VOID)
		1516	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1517
		1518	if (items > 1)
		1519	{
		1520	SV *cb_cv =get_cb (callback);
		1521
1582	SvREFCNT_dec (req->callback);	1522	SvREFCNT_dec (req->callback);
1583	req->callback = newSVsv (callback);	1523	req->callback = SvREFCNT_inc (cb_cv);
		1524	}
		1525	}
1584		1526
1585	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1586		1528
1587	void	1529	void
1588	add (aio_req grp, ...)	1530	add (aio_req grp, ...)
1589	PPCODE:	1531	PPCODE:
1590	{	1532	{
1591	int i;	1533	int i;
1592	aio_req req;
1593		1534
1594	if (grp->fd == 2)	1535	if (grp->int1 == 2)
1595	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1536	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1596		1537
1597	for (i = 1; i < items; ++i )	1538	for (i = 1; i < items; ++i )
1598	{	1539	{
		1540	aio_req req;
		1541
1599	if (GIMME_V != G_VOID)	1542	if (GIMME_V != G_VOID)
1600	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1543	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1601		1544
1602	req = SvAIO_REQ (ST (i));	1545	req = SvAIO_REQ (ST (i));
1603		1546
1604	if (req)	1547	if (req)
1605	{	1548	eio_grp_add (grp, req);
1606	++grp->length;
1607	req->grp = grp;
1608
1609	req->grp_prev = 0;
1610	req->grp_next = grp->grp_first;
1611
1612	if (grp->grp_first)
1613	grp->grp_first->grp_prev = req;
1614
1615	grp->grp_first = req;
1616	}
1617	}	1549	}
1618	}	1550	}
1619		1551
1620	void	1552	void
1621	cancel_subs (aio_req_ornot req)	1553	cancel_subs (aio_req_ornot req)
…		…
1630	AV *av;	1562	AV *av;
1631		1563
1632	grp->errorno = errno;	1564	grp->errorno = errno;
1633		1565
1634	av = newAV ();	1566	av = newAV ();
		1567	av_extend (av, items - 1);
1635		1568
1636	for (i = 1; i < items; ++i )	1569	for (i = 1; i < items; ++i )
1637	av_push (av, newSVsv (ST (i)));	1570	av_push (av, newSVsv (ST (i)));
1638		1571
1639	SvREFCNT_dec (grp->data);	1572	SvREFCNT_dec (grp->sv1);
1640	grp->data = (SV *)av;	1573	grp->sv1 = (SV *)av;
1641	}	1574	}
1642		1575
1643	void	1576	void
1644	errno (aio_req grp, int errorno = errno)	1577	errno (aio_req grp, int errorno = errno)
1645	CODE:	1578	CODE:
1646	grp->errorno = errorno;	1579	grp->errorno = errorno;
1647		1580
1648	void	1581	void
1649	limit (aio_req grp, int limit)	1582	limit (aio_req grp, int limit)
1650	CODE:	1583	CODE:
1651	grp->fd2 = limit;	1584	eio_grp_limit (grp, limit);
1652	aio_grp_feed (grp);
1653		1585
1654	void	1586	void
1655	feed (aio_req grp, SV *callback=&PL_sv_undef)	1587	feed (aio_req grp, SV *callback=&PL_sv_undef)
1656	CODE:	1588	CODE:
1657	{	1589	{
1658	SvREFCNT_dec (grp->fh2);	1590	SvREFCNT_dec (grp->sv2);
1659	grp->fh2 = newSVsv (callback);	1591	grp->sv2 = newSVsv (callback);
		1592	grp->feed = aio_grp_feed;
1660		1593
1661	if (grp->fd2 <= 0)	1594	if (grp->int2 <= 0)
1662	grp->fd2 = 2;	1595	grp->int2 = 2;
1663		1596
1664	aio_grp_feed (grp);	1597	eio_grp_limit (grp, grp->int2);
1665	}	1598	}
1666		1599

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