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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		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	#if !_POSIX_MAPPED_FILES
		26	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		27	# define munmap(addr,length) (errno = ENOSYS, -1)
		28	#endif
		29
		30	/* perl namespace pollution */
		31	#undef VERSION
		32
		33	#ifdef _WIN32
		34
		35	# define EIO_STRUCT_DIRENT Direntry_t
		36	# undef malloc
		37	# undef free
		38
		39	// perl overrides all those nice win32 functions
		40	# undef open
		41	# undef read
		42	# undef write
		43	# undef send
		44	# undef recv
		45	# undef stat
		46	# undef fstat
		47	# define lstat stat
		48	# undef truncate
		49	# undef ftruncate
		50	# undef open
		51	# undef close
		52	# undef unlink
		53	# undef rmdir
		54	# undef rename
		55	# undef lseek
		56
		57	# define chown(a,b,c) (errno = ENOSYS, -1)
		58	# define fchown(a,b,c) (errno = ENOSYS, -1)
		59	# define fchmod(a,b) (errno = ENOSYS, -1)
		60	# define symlink(a,b) (errno = ENOSYS, -1)
		61	# define readlink(a,b,c) (errno = ENOSYS, -1)
		62	# define mknod(a,b,c) (errno = ENOSYS, -1)
		63	# define truncate(a,b) (errno = ENOSYS, -1)
		64	# define ftruncate(fd,o) chsize ((fd), (o))
		65	# define fsync(fd) _commit (fd)
		66	# define opendir(fd) (errno = ENOSYS, 0)
		67	# define readdir(fd) (errno = ENOSYS, -1)
		68	# define closedir(fd) (errno = ENOSYS, -1)
		69	# define mkdir(a,b) mkdir (a)
		70
		71	#else
		72
38	# include <sys/uio.h>	73	# include <sys/time.h>
39	# elif __hpux
40	# include <sys/socket.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	74	# include <sys/select.h>
		75	# include <unistd.h>
		76	# include <utime.h>
		77	# include <signal.h>
		78	# define EIO_STRUCT_DIRENT struct dirent
		79
		80	#endif
		81
		82	/* perl stupidly overrides readdir and maybe others */
		83	/* with thread-unsafe versions, imagine that :( */
		84	#undef readdir
		85	#undef opendir
		86	#undef closedir
		87
		88	#define EIO_STRUCT_STAT Stat_t
		89
		90	/* use NV for 32 bit perls as it allows larger offsets */
		91	#if IVSIZE >= 8
		92	# define VAL64 IV
		93	# define SvVAL64 SvIV
		94	# define newSVval64 newSViv
		95	#else
		96	# define VAL64 NV
		97	# define SvVAL64 SvNV
		98	# define newSVval64 newSVnv
		99	#endif
		100
		101	/*****************************************************************************/
		102
		103	#if __GNUC__ >= 3
		104	# define expect(expr,value) __builtin_expect ((expr),(value))
		105	#else
		106	# define expect(expr,value) (expr)
		107	#endif
		108
		109	#define expect_false(expr) expect ((expr) != 0, 0)
		110	#define expect_true(expr) expect ((expr) != 0, 1)
		111
		112	/*****************************************************************************/
		113
		114	typedef SV SV8; /* byte-sv, used for argument-checking */
		115	typedef int aio_rfd; /* read file desriptor */
		116	typedef int aio_wfd; /* write file descriptor */
		117
		118	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		119
		120	#define EIO_REQ_MEMBERS \
		121	SV *callback; \
		122	SV *sv1, *sv2; \
		123	STRLEN stroffset; \
		124	SV *self;
		125
		126	#define EIO_NO_WRAPPERS 1
		127
		128	#include "libeio/eio.h"
		129
		130	#ifndef POSIX_FADV_NORMAL
		131	# define POSIX_FADV_NORMAL 0
		132	# define NO_FADVISE 1
		133	#endif
		134	#ifndef POSIX_FADV_SEQUENTIAL
		135	# define POSIX_FADV_SEQUENTIAL 0
		136	#endif
		137	#ifndef POSIX_FADV_RANDOM
		138	# define POSIX_FADV_RANDOM 0
		139	#endif
		140	#ifndef POSIX_FADV_NOREUSE
		141	# define POSIX_FADV_NOREUSE 0
		142	#endif
		143	#ifndef POSIX_FADV_WILLNEED
		144	# define POSIX_FADV_WILLNEED 0
		145	#endif
		146	#ifndef POSIX_FADV_DONTNEED
		147	# define POSIX_FADV_DONTNEED 0
		148	#endif
		149
		150	#ifndef ST_NODEV
		151	# define ST_NODEV 0
		152	#endif
		153	#ifndef ST_NOEXEC
		154	# define ST_NOEXEC 0
		155	#endif
		156	#ifndef ST_SYNCHRONOUS
		157	# define ST_SYNCHRONOUS 0
		158	#endif
		159	#ifndef ST_MANDLOCK
		160	# define ST_MANDLOCK 0
		161	#endif
		162	#ifndef ST_WRITE
		163	# define ST_WRITE 0
		164	#endif
		165	#ifndef ST_APPEND
		166	# define ST_APPEND 0
		167	#endif
		168	#ifndef ST_IMMUTABLE
		169	# define ST_IMMUTABLE 0
		170	#endif
		171	#ifndef ST_NOATIME
		172	# define ST_NOATIME 0
		173	#endif
		174	#ifndef ST_NODIRATIME
		175	# define ST_NODIRATIME 0
		176	#endif
		177	#ifndef ST_RELATIME
		178	# define ST_RELATIME 0
		179	#endif
		180
		181	#ifndef MCL_CURRENT
		182	# define MCL_CURRENT 0
		183	#endif
		184	#ifndef MCL_FUTURE
		185	# define MCL_FUTURE 0
		186	#endif
		187
		188	#ifndef MAP_ANONYMOUS
		189	# ifdef MAP_ANON
		190	# define MAP_ANONYMOUS MAP_ANON
43	# else	191	# else
44	# error sendfile support requested but not available	192	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	193	# endif
46	#endif	194	#endif
47		195	#ifndef MAP_HUGETLB
48	/* used for struct dirent, AIX doesn't provide it */	196	# define MAP_HUGETLB 0
49	#ifndef NAME_MAX
50	# define NAME_MAX 4096
51	#endif	197	#endif
52		198	#ifndef MAP_LOCKED
53	#ifndef PTHREAD_STACK_MIN	199	# define MAP_LOCKED 0
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif	200	#endif
57		201	#ifndef MAP_NORESERVE
58	#if __ia64	202	# define MAP_NORESERVE 0
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	203	#endif
		204	#ifndef MAP_POPULATE
		205	# define MAP_POPULATE 0
		206	#endif
		207	#ifndef MAP_NONBLOCK
		208	# define MAP_NONBLOCK 0
		209	#endif
65		210
66	/* buffer size for various temporary buffers */	211	#ifndef PAGESIZE
67	#define AIO_BUFSIZE 65536	212	# define PAGESIZE sysconf (_SC_PAGESIZE)
		213	#endif
68		214
69	#define dBUF \	215	static int req_invoke (eio_req *req);
70	char *aio_buf; \	216	#define EIO_FINISH(req) req_invoke (req)
71	LOCK (wrklock); \	217	static void req_destroy (eio_req *grp);
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	218	#define EIO_DESTROY(req) req_destroy (req)
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76		219
77	enum {	220	enum {
78	REQ_QUIT,	221	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};	222	};
90		223
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	224	#include "libeio/eio.c"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"
93		225
94	typedef struct aio_cb
95	{
96	struct aio_cb *volatile next;
97
98	SV *data, *callback;
99	SV *fh, *fh2;
100	void *dataptr, *data2ptr;
101	Stat_t *statdata;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105
106	STRLEN dataoffset;
107	int type;
108	int fd, fd2;
109	int errorno;
110	mode_t mode; /* open */
111
112	unsigned char flags;
113	unsigned char pri;
114
115	SV *self; /* the perl counterpart of this request, if any */
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;
118
119	enum {
120	FLAG_CANCELLED = 0x01,
121	};
122
123	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
125		228
126	enum {	229	static SV *on_next_submit;
127	PRI_MIN = -4,	230	static int next_pri = EIO_PRI_DEFAULT;
128	PRI_MAX = 4,	231	static int max_outstanding;
129		232
130	DEFAULT_PRI = 0,	233	static s_epipe respipe;
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134		234
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136
137	static int started, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149
150	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
152
153	typedef struct worker {
154	/* locked by wrklock */
155	struct worker *prev, *next;
156
157	pthread_t tid;
158
159	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */
161	void *dbuf;
162	DIR *dirp;
163	} worker;
164
165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
166
167	static void worker_clear (worker *wrk)
168	{
169	if (wrk->dirp)
170	{
171	closedir (wrk->dirp);
172	wrk->dirp = 0;
173	}
174
175	if (wrk->dbuf)
176	{
177	free (wrk->dbuf);
178	wrk->dbuf = 0;
179	}
180	}
181
182	static void worker_free (worker *wrk)
183	{
184	wrk->next->prev = wrk->prev;
185	wrk->prev->next = wrk->next;
186
187	free (wrk);
188	}
189
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
193
194	/*
195	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.
198	*/
199	typedef struct {
200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
201	int size;
202	} reqq;
203
204	static reqq req_queue;
205	static reqq res_queue;
206
207	int reqq_push (reqq *q, aio_req req)
208	{
209	int pri = req->pri;
210	req->next = 0;
211
212	if (q->qe[pri])
213	{
214	q->qe[pri]->next = req;
215	q->qe[pri] = req;
216	}
217	else
218	q->qe[pri] = q->qs[pri] = req;
219
220	return q->size++;
221	}
222
223	aio_req reqq_shift (reqq *q)
224	{
225	int pri;
226
227	if (!q->size)
228	return 0;
229
230	--q->size;
231
232	for (pri = NUM_PRI; pri--; )
233	{
234	aio_req req = q->qs[pri];
235
236	if (req)
237	{
238	if (!(q->qs[pri] = req->next))
239	q->qe[pri] = 0;
240
241	return req;
242	}
243	}
244
245	abort ();
246	}
247
248	static int poll_cb (int max);
249	static void req_invoke (aio_req req);
250	static void req_free (aio_req req);	235	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	236	static void req_cancel (aio_req req);
252		237
		238	static void want_poll (void)
		239	{
		240	/* write a dummy byte to the pipe so fh becomes ready */
		241	s_epipe_signal (&respipe);
		242	}
		243
		244	static void done_poll (void)
		245	{
		246	/* read any signals sent by the worker threads */
		247	s_epipe_drain (&respipe);
		248	}
		249
253	/* must be called at most once */	250	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	251	static SV *req_sv (aio_req req, HV *stash)
255	{	252	{
256	if (!req->self)	253	if (!req->self)
257	{	254	{
258	req->self = (SV *)newHV ();	255	req->self = (SV *)newHV ();
259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	256	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
260	}	257	}
261		258
262	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	259	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
263	}	260	}
264		261
265	static aio_req SvAIO_REQ (SV *sv)	262	static aio_req SvAIO_REQ (SV *sv)
266	{	263	{
267	MAGIC *mg;	264	MAGIC *mg;
268		265
269	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	266	if (!SvROK (sv)
		267	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		268	&& SvSTASH (SvRV (sv)) != aio_req_stash
		269	&& !sv_derived_from (sv, "IO::AIO::REQ")))
270	croak ("object of class " AIO_REQ_KLASS " expected");	270	croak ("object of class IO::AIO::REQ expected");
271		271
272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
273		273
274	return mg ? (aio_req)mg->mg_ptr : 0;	274	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	275	}
276		276
277	static void aio_grp_feed (aio_req grp)	277	static void aio_grp_feed (aio_req grp)
278	{	278	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	279	if (grp->sv2 && SvOK (grp->sv2))
280	{	280	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	281	dSP;
286		282
287	ENTER;	283	ENTER;
288	SAVETMPS;	284	SAVETMPS;
289	PUSHMARK (SP);	285	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	286	XPUSHs (req_sv (grp, aio_grp_stash));
291	PUTBACK;	287	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	288	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	289	SPAGAIN;
294	FREETMPS;	290	FREETMPS;
295	LEAVE;	291	LEAVE;
296	}
297
298	/* stop if no progress has been made */
299	if (old_len == grp->length)
300	{
301	SvREFCNT_dec (grp->fh2);
302	grp->fh2 = 0;
303	break;
304	}
305	}	292	}
306	}	293	}
307		294
308	static void aio_grp_dec (aio_req grp)	295	static void req_submit (eio_req *req)
309	{	296	{
310	--grp->length;	297	eio_submit (req);
311		298
312	/* call feeder, if applicable */	299	if (expect_false (on_next_submit))
313	aio_grp_feed (grp);
314
315	/* finish, if done */
316	if (!grp->length && grp->fd)
317	{	300	{
318	req_invoke (grp);	301	dSP;
319	req_free (grp);	302	SV *cb = sv_2mortal (on_next_submit);
		303
		304	on_next_submit = 0;
		305
		306	PUSHMARK (SP);
		307	PUTBACK;
		308	call_sv (cb, G_DISCARD | G_EVAL);
320	}	309	}
321	}	310	}
322		311
323	static void poll_wait ()	312	static int req_invoke (eio_req *req)
324	{	313	{
325	fd_set rfd;	314	dSP;
326		315
327	while (nreqs)	316	if (req->flags & FLAG_SV2_RO_OFF)
		317	SvREADONLY_off (req->sv2);
		318
		319	if (!EIO_CANCELLED (req) && req->callback)
328	{	320	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)
349	{
350	dSP;
351
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353	{
354	errno = req->errorno;
355
356	ENTER;	321	ENTER;
357	SAVETMPS;	322	SAVETMPS;
358	PUSHMARK (SP);	323	PUSHMARK (SP);
359	EXTEND (SP, 1);	324	EXTEND (SP, 1);
360		325
361	switch (req->type)	326	switch (req->type)
362	{	327	{
363	case REQ_READDIR:	328	case EIO_READDIR:
364	{	329	{
365	SV *rv = &PL_sv_undef;	330	SV *rv = &PL_sv_undef;
366		331
367	if (req->result >= 0)	332	if (req->result >= 0)
368	{	333	{
369	int i;	334	int i;
370	char *buf = req->data2ptr;	335	char *names = (char *)req->ptr2;
		336	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
371	AV *av = newAV ();	337	AV *av = newAV ();
372		338
373	av_extend (av, req->result - 1);	339	av_extend (av, req->result - 1);
374		340
375	for (i = 0; i < req->result; ++i)	341	for (i = 0; i < req->result; ++i)
376	{	342	{
377	SV *sv = newSVpv (buf, 0);	343	if (req->int1 & EIO_READDIR_DENTS)
		344	{
		345	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
378		346
		347	if (req->int1 & EIO_READDIR_CUSTOM2)
		348	{
		349	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		350	AV *avent = newAV ();
		351
		352	av_extend (avent, 2);
		353
		354	if (!sv_type [ent->type])
		355	{
		356	sv_type [ent->type] = newSViv (ent->type);
		357	SvREADONLY_on (sv_type [ent->type]);
		358	}
		359
		360	av_store (avent, 0, namesv);
		361	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		362	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		363
		364	av_store (av, i, newRV_noinc ((SV *)avent));
		365	}
		366	else
379	av_store (av, i, sv);	367	av_store (av, i, namesv);
		368
		369	++ent;
		370	}
		371	else
		372	{
		373	SV *name = newSVpv (names, 0);
		374	av_store (av, i, name);
380	buf += SvCUR (sv) + 1;	375	names += SvCUR (name) + 1;
		376	}
381	}	377	}
382		378
383	rv = sv_2mortal (newRV_noinc ((SV *)av));	379	rv = sv_2mortal (newRV_noinc ((SV *)av));
384	}	380	}
385		381
386	PUSHs (rv);	382	PUSHs (rv);
		383
		384	if (req->int1 & EIO_READDIR_CUSTOM1)
		385	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
387	}	386	}
388	break;	387	break;
389		388
390	case REQ_OPEN:	389	case EIO_OPEN:
391	{	390	{
392	/* convert fd to fh */	391	/* convert fd to fh */
393	SV *fh;	392	SV *fh = &PL_sv_undef;
394		393
395	PUSHs (sv_2mortal (newSViv (req->result)));	394	if (req->result >= 0)
396	PUTBACK;	395	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	396	GV *gv = (GV *)sv_newmortal ();
398	SPAGAIN;	397	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		398	char sym [64];
		399	int symlen;
		400
		401	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		402	gv_init (gv, aio_stash, sym, symlen, 0);
399		403
400	fh = SvREFCNT_inc (POPs);	404	symlen = snprintf (
		405	sym,
		406	sizeof (sym),
		407	"%s&=%d",
		408	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		409	(int)req->result
		410	);
401		411
		412	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		413	fh = (SV *)gv;
		414	}
		415
402	PUSHMARK (SP);	416	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	417	}
405	break;	418	break;
406		419
		420	case EIO_STATVFS:
		421	case EIO_FSTATVFS:
		422	{
		423	SV *rv = &PL_sv_undef;
		424
		425	if (req->result >= 0)
		426	{
		427	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		428	HV *hv = newHV ();
		429
		430	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		431
		432	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		433	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		434	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		435	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		436	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		437	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		438	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		439	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		440	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		441	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		442	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		443	}
		444
		445	PUSHs (rv);
		446	}
		447
		448	break;
		449
407	case REQ_GROUP:	450	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	451	req->int1 = 2; /* mark group as finished */
409		452
410	if (req->data)	453	if (req->sv1)
411	{	454	{
412	int i;	455	int i;
413	AV *av = (AV *)req->data;	456	AV *av = (AV *)req->sv1;
414		457
415	EXTEND (SP, AvFILL (av) + 1);	458	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	459	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	460	PUSHs (*av_fetch (av, i, 0));
418	}	461	}
419	break;	462	break;
420		463
421	case REQ_NOP:	464	case EIO_NOP:
422	case REQ_BUSY:	465	case EIO_BUSY:
423	break;	466	break;
		467
		468	case EIO_READLINK:
		469	if (req->result > 0)
		470	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		471	break;
		472
		473	case EIO_STAT:
		474	case EIO_LSTAT:
		475	case EIO_FSTAT:
		476	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		477	PL_laststatval = req->result;
		478	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		479	PUSHs (sv_2mortal (newSViv (req->result)));
		480	break;
		481
		482	case EIO_READ:
		483	{
		484	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		485	*SvEND (req->sv2) = 0;
		486	SvPOK_only (req->sv2);
		487	SvSETMAGIC (req->sv2);
		488	PUSHs (sv_2mortal (newSViv (req->result)));
		489	}
		490	break;
		491
		492	case EIO_DUP2:
		493	if (req->result > 0)
		494	req->result = 0;
		495	/* FALLTHROUGH */
424		496
425	default:	497	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	498	PUSHs (sv_2mortal (newSViv (req->result)));
427	break;	499	break;
428	}	500	}
429		501
		502	errno = req->errorno;
430		503
431	PUTBACK;	504	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	505	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	506	SPAGAIN;
434		507
435	FREETMPS;	508	FREETMPS;
436	LEAVE;	509	LEAVE;
		510
		511	PUTBACK;
437	}	512	}
438		513
439	if (req->grp)	514	return !!SvTRUE (ERRSV);
440	{
441	aio_req grp = req->grp;
442
443	/* unlink request */
444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
446
447	if (grp->grp_first == req)
448	grp->grp_first = req->grp_next;
449
450	aio_grp_dec (grp);
451	}
452
453	if (SvTRUE (ERRSV))
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	515	}
459		516
460	static void req_free (aio_req req)	517	static void req_destroy (aio_req req)
461	{	518	{
462	if (req->self)	519	if (req->self)
463	{	520	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	521	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	522	SvREFCNT_dec (req->self);
466	}	523	}
467		524
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	525	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	526	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	527	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476		528
477	Safefree (req);	529	Safefree (req);
478	}	530	}
479		531
480	static void req_cancel_subs (aio_req grp)	532	static void req_cancel_subs (aio_req grp)
481	{	533	{
482	aio_req sub;	534	aio_req sub;
483		535
484	if (grp->type != REQ_GROUP)	536	if (grp->type != EIO_GROUP)
485	return;	537	return;
486		538
487	SvREFCNT_dec (grp->fh2);	539	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	540	grp->sv2 = 0;
489		541
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	542	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	543	}
493		544
494	static void req_cancel (aio_req req)	545	static void
		546	create_respipe (void)
495	{	547	{
496	req->flags |= FLAG_CANCELLED;	548	if (s_epipe_renew (&respipe))
497		549	croak ("IO::AIO: unable to initialize result pipe");
498	req_cancel_subs (req);
499	}	550	}
500		551
501	static int poll_cb (int max)	552	static void poll_wait (void)
502	{	553	{
503	dSP;	554	while (eio_nreqs ())
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507
508	while (max <= 0 || count < max)
509	{	555	{
		556	int size;
		557
510	LOCK (reslock);	558	X_LOCK (reslock);
511	req = reqq_shift (&res_queue);	559	size = res_queue.size;
512
513	if (req)
514	{
515	if (!res_queue.size)
516	{
517	/* read any signals sent by the worker threads */
518	char buf [32];
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}
522	}
523
524	UNLOCK (reslock);	560	X_UNLOCK (reslock);
525		561
526	if (!req)	562	if (size)
527	break;	563	return;
528		564
529	--nreqs;	565	etp_maybe_start_thread ();
530		566
531	if (req->type == REQ_QUIT)	567	s_epipe_wait (&respipe);
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{
535	req->fd = 1; /* mark request as delayed */
536	continue;
537	}
538	else
539	{
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}	568	}
560
561	return count;
562	}	569	}
563		570
564	static void *aio_proc(void *arg);	571	static int poll_cb (void)
565
566	static void start_thread (void)
567	{	572	{
568	sigset_t fullsigset, oldsigset;	573	for (;;)
569	pthread_attr_t attr;
570
571	worker *wrk = calloc (1, sizeof (worker));
572
573	if (!wrk)
574	croak ("unable to allocate worker thread data");
575
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586	{	574	{
587	wrk->prev = &wrk_first;	575	int res = eio_poll ();
588	wrk->next = wrk_first.next;	576
589	wrk_first.next->prev = wrk;	577	if (res > 0)
590	wrk_first.next = wrk;	578	croak (0);
591	started++;	579
		580	if (!max_outstanding || max_outstanding > eio_nreqs ())
		581	return res;
		582
		583	poll_wait ();
592	}	584	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	585	}
599		586
600	static void req_send (aio_req req)	587	static void atfork_child (void)
601	{	588	{
602	while (started < wanted && nreqs >= started)	589	create_respipe ();
603	start_thread ();
604
605	++nreqs;
606
607	LOCK (reqlock);
608	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);
610	UNLOCK (reqlock);
611	}
612
613	static void end_thread (void)
614	{
615	aio_req req;
616
617	Newz (0, req, 1, aio_cb);
618
619	req->type = REQ_QUIT;
620	req->pri = PRI_MAX + PRI_BIAS;
621
622	req_send (req);
623	}
624
625	static void min_parallel (int nthreads)
626	{
627	if (wanted < nthreads)
628	wanted = nthreads;
629	}
630
631	static void max_parallel (int nthreads)
632	{
633	int cur = started;
634
635	if (wanted > nthreads)
636	wanted = nthreads;
637
638	while (cur > wanted)
639	{
640	end_thread ();
641	cur--;
642	}
643
644	while (started > wanted)
645	{
646	poll_wait ();
647	poll_cb (0);
648	}
649	}
650
651	static void create_pipe ()
652	{
653	if (pipe (respipe))
654	croak ("unable to initialize result pipe");
655
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
657	croak ("cannot set result pipe to nonblocking mode");
658
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
660	croak ("cannot set result pipe to nonblocking mode");
661	}	590	}
662		591
663	/*****************************************************************************/	592	/*****************************************************************************/
664	/* work around various missing functions */
665		593
666	#if !HAVE_PREADWRITE	594	#define MMAP_MAGIC PERL_MAGIC_ext
667	# define pread aio_pread
668	# define pwrite aio_pwrite
669		595
670	/*	596	static int
671	* make our pread/pwrite safe against themselves, but not against	597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
672	* normal read/write by using a mutex. slows down execution a lot,
673	* but that's your problem, not mine.
674	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
676
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
678	{	598	{
679	ssize_t res;	599	int old_errno = errno;
680	off_t ooffset;	600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
681
682	LOCK (preadwritelock);
683	ooffset = lseek (fd, 0, SEEK_CUR);
684	lseek (fd, offset, SEEK_SET);
685	res = read (fd, buf, count);
686	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);
688
689	return res;
690	}
691
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
693	{
694	ssize_t res;
695	off_t ooffset;
696
697	LOCK (preadwritelock);
698	ooffset = lseek (fd, 0, SEEK_CUR);
699	lseek (fd, offset, SEEK_SET);
700	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);
703
704	return res;
705	}
706	#endif
707
708	#if !HAVE_FDATASYNC
709	# define fdatasync fsync
710	#endif
711
712	#if !HAVE_READAHEAD
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
714
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
716	{
717	dBUF;
718
719	while (count > 0)
720	{
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
722
723	pread (fd, aio_buf, len, offset);
724	offset += len;
725	count -= len;
726	}
727
728	errno = 0;
729	}
730
731	#endif
732
733	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r
735
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
737
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
739	{
740	struct dirent *e;
741	int errorno;
742
743	LOCK (readdirlock);
744
745	e = readdir (dirp);
746	errorno = errno;	601	errno = old_errno;
747		602
748	if (e)	603	mg->mg_obj = 0; /* just in case */
749	{
750	*res = ent;
751	strcpy (ent->d_name, e->d_name);
752	}
753	else
754	*res = 0;
755		604
756	UNLOCK (readdirlock);	605	SvREADONLY_off (sv);
		606	SvCUR_set (sv, 0);
		607	SvLEN_set (sv, 0);
		608	SvPVX (sv) = 0;
		609	SvOK_off (sv);
757		610
758	errno = errorno;
759	return e ? 0 : -1;
760	}
761	#endif
762
763	/* sendfile always needs emulation */
764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
765	{
766	ssize_t res;
767
768	if (!count)
769	return 0;	611	return 0;
770
771	#if HAVE_SENDFILE
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774
775	# elif __freebsd
776	/*
777	* Of course, the freebsd sendfile is a dire hack with no thoughts
778	* wasted on making it similar to other I/O functions.
779	*/
780	{
781	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783
784	if (res < 0 && sbytes)
785	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
786	res = sbytes;
787	}
788
789	# elif __hpux
790	res = sendfile (ofd, ifd, offset, count, 0, 0);
791
792	# elif __solaris
793	{
794	struct sendfilevec vec;
795	size_t sbytes;
796
797	vec.sfv_fd = ifd;
798	vec.sfv_flag = 0;
799	vec.sfv_off = offset;
800	vec.sfv_len = count;
801
802	res = sendfilev (ofd, &vec, 1, &sbytes);
803
804	if (res < 0 && sbytes)
805	res = sbytes;
806	}
807
808	# endif
809	#else
810	res = -1;
811	errno = ENOSYS;
812	#endif
813
814	if (res < 0
815	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
816	#if __solaris
817	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
818	#endif
819	)
820	)
821	{
822	/* emulate sendfile. this is a major pain in the ass */
823	dBUF;
824
825	res = 0;
826
827	while (count)
828	{
829	ssize_t cnt;
830
831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
832
833	if (cnt <= 0)
834	{
835	if (cnt && !res) res = -1;
836	break;
837	}
838
839	cnt = write (ofd, aio_buf, cnt);
840
841	if (cnt <= 0)
842	{
843	if (cnt && !res) res = -1;
844	break;
845	}
846
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;
854	}	612	}
855		613
856	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
857	static void scandir_ (aio_req req, worker *self)	615	0, 0, 0, 0, mmap_free
858	{	616	};
859	DIR *dirp;
860	union
861	{
862	struct dirent d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
864	} *u;
865	struct dirent *entp;
866	char *name, *names;
867	int memlen = 4096;
868	int memofs = 0;
869	int res = 0;
870	int errorno;
871
872	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);
874	self->dbuf = u = malloc (sizeof (*u));
875	req->data2ptr = names = malloc (memlen);
876	UNLOCK (wrklock);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916		617
917	/*****************************************************************************/	618	/*****************************************************************************/
918		619
919	static void *aio_proc (void *thr_arg)	620	static SV *
		621	get_cb (SV *cb_sv)
920	{	622	{
921	aio_req req;	623	SvGETMAGIC (cb_sv);
922	int type;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}	625	}
1069		626
1070	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
1071	aio_req req; \	629	aio_req req; \
1072	int req_pri = next_pri; \	630	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	631	next_pri = EIO_PRI_DEFAULT; \
1074	\	632	\
1075	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	634	\
1078	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
1079	if (!req) \	636	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
1081	\	638	\
1082	req->callback = newSVsv (callback); \	639	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	640	req->pri = req_pri
1084		641
1085	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
1086	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
1087	\	646	\
1088	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
1090		649
1091	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
1092		651
1093	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
1094		653
1095	BOOT:	654	BOOT:
1096	{	655	{
		656	static const struct {
		657	const char *name;
		658	IV iv;
		659	} *civ, const_iv[] = {
		660	# define const_niv(name, value) { # name, (IV) value },
		661	# define const_iv(name) { # name, (IV) name },
		662	# define const_eio(name) { # name, (IV) EIO_ ## name },
		663	const_iv (EXDEV)
		664	const_iv (ENOSYS)
		665	const_iv (O_RDONLY)
		666	const_iv (O_WRONLY)
		667	const_iv (O_CREAT)
		668	const_iv (O_TRUNC)
		669	#ifndef _WIN32
		670	const_iv (S_IFIFO)
		671	#endif
		672	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		673	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		674	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		675	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		676	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		677	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		678
		679	const_iv (ST_RDONLY)
		680	const_iv (ST_NOSUID)
		681	const_iv (ST_NODEV)
		682	const_iv (ST_NOEXEC)
		683	const_iv (ST_SYNCHRONOUS)
		684	const_iv (ST_MANDLOCK)
		685	const_iv (ST_WRITE)
		686	const_iv (ST_APPEND)
		687	const_iv (ST_IMMUTABLE)
		688	const_iv (ST_NOATIME)
		689	const_iv (ST_NODIRATIME)
		690	const_iv (ST_RELATIME)
		691
		692	const_iv (PROT_EXEC)
		693	const_iv (PROT_NONE)
		694	const_iv (PROT_READ)
		695	const_iv (PROT_WRITE)
		696
		697	/*const_iv (MAP_FIXED)*/
		698	const_iv (MAP_PRIVATE)
		699	const_iv (MAP_SHARED)
		700	const_iv (MAP_ANONYMOUS)
		701
		702	/* linuxish */
		703	const_iv (MAP_HUGETLB)
		704	const_iv (MAP_LOCKED)
		705	const_iv (MAP_NORESERVE)
		706	const_iv (MAP_POPULATE)
		707	const_iv (MAP_NONBLOCK)
		708
		709	const_iv (MCL_FUTURE)
		710	const_iv (MCL_CURRENT)
		711
		712	const_eio (MS_ASYNC)
		713	const_eio (MS_INVALIDATE)
		714	const_eio (MS_SYNC)
		715
		716	const_eio (MT_MODIFY)
		717
		718	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		719	const_eio (SYNC_FILE_RANGE_WRITE)
		720	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		721
		722	const_eio (READDIR_DENTS)
		723	const_eio (READDIR_DIRS_FIRST)
		724	const_eio (READDIR_STAT_ORDER)
		725	const_eio (READDIR_FOUND_UNKNOWN)
		726
		727	const_eio (DT_UNKNOWN)
		728	const_eio (DT_FIFO)
		729	const_eio (DT_CHR)
		730	const_eio (DT_DIR)
		731	const_eio (DT_BLK)
		732	const_eio (DT_REG)
		733	const_eio (DT_LNK)
		734	const_eio (DT_SOCK)
		735	const_eio (DT_WHT)
		736	};
		737
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	738	aio_stash = gv_stashpv ("IO::AIO" , 1);
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	739	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	740	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1101		741
		742	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		743	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		744
		745	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		746
1102	create_pipe ();	747	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		748
		749	if (eio_init (want_poll, done_poll) < 0)
		750	croak ("IO::AIO: unable to initialise eio library");
		751
		752	/* atfork child called in fifo order, so before eio's handler */
		753	X_THREAD_ATFORK (0, 0, atfork_child);
		754	}
		755
1106	void	756	void
1107	min_parallel (nthreads)	757	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	758	PROTOTYPE: $
		759	CODE:
		760	eio_set_max_poll_reqs (nreqs);
1110		761
1111	void	762	void
1112	max_parallel (nthreads)	763	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	764	PROTOTYPE: $
		765	CODE:
		766	eio_set_max_poll_time (nseconds);
1115		767
1116	void	768	void
		769	min_parallel (int nthreads)
		770	PROTOTYPE: $
		771	CODE:
		772	eio_set_min_parallel (nthreads);
		773
		774	void
		775	max_parallel (int nthreads)
		776	PROTOTYPE: $
		777	CODE:
		778	eio_set_max_parallel (nthreads);
		779
		780	void
		781	max_idle (int nthreads)
		782	PROTOTYPE: $
		783	CODE:
		784	eio_set_max_idle (nthreads);
		785
		786	void
		787	max_outstanding (int maxreqs)
		788	PROTOTYPE: $
		789	CODE:
		790	max_outstanding = maxreqs;
		791
		792	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	793	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
1123	PPCODE:	795	PPCODE:
1124	{	796	{
1125	dREQ;	797	dREQ;
1126		798
1127	req->type = REQ_OPEN;	799	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	800	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	801	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	802	req->int1 = flags;
1131	req->mode = mode;	803	req->int2 = mode;
1132		804
1133	REQ_SEND;	805	REQ_SEND;
1134	}	806	}
1135		807
1136	void	808	void
1137	aio_close (fh,callback=&PL_sv_undef)	809	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	810	PROTOTYPE: $;$
1141	ALIAS:	811	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	812	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	813	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	814	PPCODE:
1146	{	815	{
		816	int fd = s_fileno_croak (fh, 0);
1147	dREQ;	817	dREQ;
1148		818
1149	req->type = ix;	819	req->type = ix;
1150	req->fh = newSVsv (fh);	820	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	821	req->int1 = fd;
1152		822
1153	REQ_SEND (req);	823	REQ_SEND (req);
1154	}	824	}
1155		825
1156	void	826	void
		827	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		828	PROTOTYPE: $$$$;$
		829	PPCODE:
		830	{
		831	int fd = s_fileno_croak (fh, 0);
		832	dREQ;
		833
		834	req->type = EIO_SYNC_FILE_RANGE;
		835	req->sv1 = newSVsv (fh);
		836	req->int1 = fd;
		837	req->offs = offset;
		838	req->size = nbytes;
		839	req->int2 = flags;
		840
		841	REQ_SEND (req);
		842	}
		843
		844	void
		845	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		846	PROTOTYPE: $;$
		847	PPCODE:
		848	{
		849	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		850	int fd = s_fileno_croak (fh, 0);
		851	dREQ;
		852
		853	if (close_pipe < 0)
		854	{
		855	int pipefd [2];
		856
		857	if (pipe (pipefd) < 0
		858	|| close (pipefd [1]) < 0
		859	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		860	abort (); /*D*/
		861
		862	close_pipe = pipefd [0];
		863	}
		864
		865	req->type = EIO_DUP2;
		866	req->int1 = close_pipe;
		867	req->sv2 = newSVsv (fh);
		868	req->int2 = fd;
		869
		870	REQ_SEND (req);
		871	}
		872
		873	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	874	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	875	ALIAS:
1165	aio_read = REQ_READ	876	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	877	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	878	PROTOTYPE: $$$$$;$
1168	PPCODE:	879	PPCODE:
1169	{	880	{
1170	aio_req req;
1171	STRLEN svlen;	881	STRLEN svlen;
		882	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1172	char *svptr = SvPVbyte (data, svlen);	883	char *svptr = SvPVbyte (data, svlen);
1173		884	UV len = SvUV (length);
1174	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);
1176		885
1177	if (dataoffset < 0)	886	if (dataoffset < 0)
1178	dataoffset += svlen;	887	dataoffset += svlen;
1179		888
1180	if (dataoffset < 0 || dataoffset > svlen)	889	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	890	croak ("dataoffset outside of data scalar");
1182		891
1183	if (ix == REQ_WRITE)	892	if (ix == EIO_WRITE)
1184	{	893	{
1185	/* write: check length and adjust. */	894	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	895	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	896	len = svlen - dataoffset;
1188	}	897	}
1189	else	898	else
1190	{	899	{
1191	/* read: grow scalar as necessary */	900	/* read: check type and grow scalar as necessary */
		901	SvUPGRADE (data, SVt_PV);
1192	svptr = SvGROW (data, length + dataoffset);	902	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	903	}
1194
1195	if (length < 0)
1196	croak ("length must not be negative");
1197		904
1198	{	905	{
1199	dREQ;	906	dREQ;
1200		907
1201	req->type = ix;	908	req->type = ix;
1202	req->fh = newSVsv (fh);	909	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	910	req->int1 = fd;
1204	: IoOFP (sv_2io (fh)));	911	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	912	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	913	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	914	req->ptr2 = (char *)svptr + dataoffset;
		915	req->stroffset = dataoffset;
1209		916
1210	if (!SvREADONLY (data))	917	if (!SvREADONLY (data))
1211	{	918	{
1212	SvREADONLY_on (data);	919	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	920	req->flags |= FLAG_SV2_RO_OFF;
1214	}	921	}
1215		922
1216	REQ_SEND;	923	REQ_SEND;
1217	}	924	}
1218	}	925	}
1219		926
1220	void	927	void
		928	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		929	PROTOTYPE: $$;$
		930	PPCODE:
		931	{
		932	SV *data;
		933	dREQ;
		934
		935	req->type = EIO_READLINK;
		936	req->sv1 = newSVsv (path);
		937	req->ptr1 = SvPVbyte_nolen (req->sv1);
		938
		939	REQ_SEND;
		940	}
		941
		942	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	943	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	944	PROTOTYPE: $$$$;$
1228	PPCODE:	945	PPCODE:
1229	{	946	{
		947	int ifd = s_fileno_croak (in_fh , 0);
		948	int ofd = s_fileno_croak (out_fh, 1);
1230	dREQ;	949	dREQ;
1231		950
1232	req->type = REQ_SENDFILE;	951	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	952	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	953	req->int1 = ofd;
1235	req->fh2 = newSVsv (in_fh);	954	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	955	req->int2 = ifd;
1237	req->offset = in_offset;	956	req->offs = in_offset;
1238	req->length = length;	957	req->size = length;
1239		958
1240	REQ_SEND;	959	REQ_SEND;
1241	}	960	}
1242		961
1243	void	962	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	963	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	964	PROTOTYPE: $$$;$
1250	PPCODE:	965	PPCODE:
1251	{	966	{
		967	int fd = s_fileno_croak (fh, 0);
1252	dREQ;	968	dREQ;
1253		969
1254	req->type = REQ_READAHEAD;	970	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	972	req->int1 = fd;
1257	req->offset = offset;	973	req->offs = offset;
1258	req->length = length;	974	req->size = length;
1259		975
1260	REQ_SEND;	976	REQ_SEND;
1261	}	977	}
1262		978
1263	void	979	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	980	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	981	ALIAS:
1268	aio_stat = REQ_STAT	982	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	983	aio_lstat = EIO_LSTAT
		984	aio_statvfs = EIO_STATVFS
1270	PPCODE:	985	PPCODE:
1271	{	986	{
1272	dREQ;	987	dREQ;
1273		988
1274	New (0, req->statdata, 1, Stat_t);	989	req->sv1 = newSVsv (fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280		990
1281	if (SvPOK (fh_or_path))	991	if (SvPOK (req->sv1))
1282	{	992	{
1283	req->type = ix;	993	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	995	}
1287	else	996	else
1288	{	997	{
1289	req->type = REQ_FSTAT;	998	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	999	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1000	}
1293		1001
1294	REQ_SEND;	1002	REQ_SEND;
1295	}	1003	}
1296		1004
1297	void	1005	void
		1006	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1007	PPCODE:
		1008	{
		1009	dREQ;
		1010
		1011	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1012	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1013	req->sv1 = newSVsv (fh_or_path);
		1014
		1015	if (SvPOK (req->sv1))
		1016	{
		1017	req->type = EIO_UTIME;
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	}
		1020	else
		1021	{
		1022	req->type = EIO_FUTIME;
		1023	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1024	}
		1025
		1026	REQ_SEND;
		1027	}
		1028
		1029	void
		1030	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	dREQ;
		1034
		1035	req->sv1 = newSVsv (fh_or_path);
		1036	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1037
		1038	if (SvPOK (req->sv1))
		1039	{
		1040	req->type = EIO_TRUNCATE;
		1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1042	}
		1043	else
		1044	{
		1045	req->type = EIO_FTRUNCATE;
		1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1047	}
		1048
		1049	REQ_SEND;
		1050	}
		1051
		1052	void
		1053	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1054	ALIAS:
		1055	aio_chmod = EIO_CHMOD
		1056	aio_mkdir = EIO_MKDIR
		1057	PPCODE:
		1058	{
		1059	dREQ;
		1060
		1061	req->int2 = mode;
		1062	req->sv1 = newSVsv (fh_or_path);
		1063
		1064	if (SvPOK (req->sv1))
		1065	{
		1066	req->type = ix;
		1067	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1068	}
		1069	else
		1070	{
		1071	req->type = EIO_FCHMOD;
		1072	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1073	}
		1074
		1075	REQ_SEND;
		1076	}
		1077
		1078	void
		1079	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1080	PPCODE:
		1081	{
		1082	dREQ;
		1083
		1084	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1085	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1086	req->sv1 = newSVsv (fh_or_path);
		1087
		1088	if (SvPOK (req->sv1))
		1089	{
		1090	req->type = EIO_CHOWN;
		1091	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1092	}
		1093	else
		1094	{
		1095	req->type = EIO_FCHOWN;
		1096	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1097	}
		1098
		1099	REQ_SEND;
		1100	}
		1101
		1102	void
		1103	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	dREQ;
		1107
		1108	req->type = EIO_READDIR;
		1109	req->sv1 = newSVsv (pathname);
		1110	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1111	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1112
		1113	if (flags & EIO_READDIR_DENTS)
		1114	req->int1 |= EIO_READDIR_CUSTOM2;
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1120	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1121	ALIAS:
1302	aio_unlink = REQ_UNLINK	1122	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	1123	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	1124	aio_readdir = EIO_READDIR
1305	PPCODE:	1125	PPCODE:
1306	{	1126	{
1307	dREQ;	1127	dREQ;
1308		1128
1309	req->type = ix;	1129	req->type = ix;
1310	req->data = newSVsv (pathname);	1130	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1131	req->ptr1 = SvPVbyte_nolen (req->sv1);
1312		1132
1313	REQ_SEND;	1133	REQ_SEND;
1314	}	1134	}
1315		1135
1316	void	1136	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1137	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1138	ALIAS:
1322	aio_link = REQ_LINK	1139	aio_link = EIO_LINK
1323	aio_symlink = REQ_SYMLINK	1140	aio_symlink = EIO_SYMLINK
1324	aio_rename = REQ_RENAME	1141	aio_rename = EIO_RENAME
1325	PPCODE:	1142	PPCODE:
1326	{	1143	{
1327	dREQ;	1144	dREQ;
1328		1145
1329	req->type = ix;	1146	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1147	req->sv1 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1148	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	1149	req->sv2 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1150	req->ptr2 = SvPVbyte_nolen (req->sv2);
1334		1151
1335	REQ_SEND;	1152	REQ_SEND;
1336	}	1153	}
1337		1154
1338	void	1155	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1156	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1157	PPCODE:
1343	{	1158	{
1344	dREQ;	1159	dREQ;
1345		1160
1346	req->type = REQ_BUSY;	1161	req->type = EIO_MKNOD;
1347	req->fd = delay < 0. ? 0 : delay;	1162	req->sv1 = newSVsv (pathname);
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1163	req->ptr1 = SvPVbyte_nolen (req->sv1);
1349		1164	req->int2 = (mode_t)mode;
		1165	req->offs = dev;
		1166
1350	REQ_SEND;	1167	REQ_SEND;
1351	}	1168	}
1352		1169
1353	void	1170	void
		1171	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1172	ALIAS:
		1173	aio_mtouch = EIO_MTOUCH
		1174	aio_msync = EIO_MSYNC
		1175	PROTOTYPE: $$$$;$
		1176	PPCODE:
		1177	{
		1178	STRLEN svlen;
		1179	UV len = SvUV (length);
		1180	char *svptr = SvPVbyte (data, svlen);
		1181
		1182	if (offset < 0)
		1183	offset += svlen;
		1184
		1185	if (offset < 0 || offset > svlen)
		1186	croak ("offset outside of scalar");
		1187
		1188	if (!SvOK (length) || len + offset > svlen)
		1189	len = svlen - offset;
		1190
		1191	{
		1192	dREQ;
		1193
		1194	req->type = ix;
		1195	req->size = len;
		1196	req->sv2 = SvREFCNT_inc (data);
		1197	req->ptr2 = (char *)svptr + offset;
		1198	req->int1 = flags;
		1199
		1200	REQ_SEND;
		1201	}
		1202	}
		1203
		1204	void
		1205	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1206	PPCODE:
		1207	{
		1208	dREQ;
		1209
		1210	req->type = EIO_BUSY;
		1211	req->nv1 = delay < 0. ? 0. : delay;
		1212
		1213	REQ_SEND;
		1214	}
		1215
		1216	void
1354	aio_group (callback=&PL_sv_undef)	1217	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1218	PROTOTYPE: ;$
1357	PPCODE:	1219	PPCODE:
1358	{	1220	{
1359	dREQ;	1221	dREQ;
1360		1222
1361	req->type = REQ_GROUP;	1223	req->type = EIO_GROUP;
		1224
1362	req_send (req);	1225	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1226	XPUSHs (req_sv (req, aio_grp_stash));
1365	}	1227	}
1366		1228
1367	void	1229	void
1368	aio_nop (callback=&PL_sv_undef)	1230	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	1231	ALIAS:
		1232	aio_nop = EIO_NOP
		1233	aio_sync = EIO_SYNC
1370	PPCODE:	1234	PPCODE:
1371	{	1235	{
1372	dREQ;	1236	dREQ;
1373		1237
1374	req->type = REQ_NOP;	1238	req->type = ix;
1375		1239
1376	REQ_SEND;	1240	REQ_SEND;
1377	}	1241	}
1378		1242
1379	void	1243	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1244	aioreq_pri (int pri = 0)
1381	CODE:	1245	PROTOTYPE: ;$
		1246	CODE:
		1247	RETVAL = next_pri;
		1248	if (items > 0)
		1249	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1250	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1251	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1252	next_pri = pri;
		1253	}
		1254	OUTPUT:
		1255	RETVAL
1385		1256
1386	void	1257	void
1387	aioreq_nice (int nice = 0)	1258	aioreq_nice (int nice = 0)
1388	CODE:	1259	CODE:
1389	nice = next_pri - nice;	1260	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1261	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1262	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1263	next_pri = nice;
1393		1264
1394	void	1265	void
1395	flush ()	1266	flush ()
1396	PROTOTYPE:	1267	PROTOTYPE:
1397	CODE:	1268	CODE:
1398	while (nreqs)	1269	while (eio_nreqs ())
1399	{	1270	{
1400	poll_wait ();	1271	poll_wait ();
1401	poll_cb (0);	1272	poll_cb ();
1402	}	1273	}
1403		1274
1404	void	1275	int
1405	poll()	1276	poll()
1406	PROTOTYPE:	1277	PROTOTYPE:
1407	CODE:	1278	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1279	poll_wait ();
1411	poll_cb (0);	1280	RETVAL = poll_cb ();
1412	}	1281	OUTPUT:
		1282	RETVAL
1413		1283
1414	int	1284	int
1415	poll_fileno()	1285	poll_fileno()
1416	PROTOTYPE:	1286	PROTOTYPE:
1417	CODE:	1287	CODE:
1418	RETVAL = respipe [0];	1288	RETVAL = s_epipe_fd (&respipe);
1419	OUTPUT:	1289	OUTPUT:
1420	RETVAL	1290	RETVAL
1421		1291
1422	int	1292	int
1423	poll_cb(...)	1293	poll_cb(...)
1424	PROTOTYPE:	1294	PROTOTYPE:
1425	CODE:	1295	CODE:
1426	RETVAL = poll_cb (0);	1296	RETVAL = poll_cb ();
1427	OUTPUT:	1297	OUTPUT:
1428	RETVAL	1298	RETVAL
1429		1299
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void	1300	void
1439	poll_wait()	1301	poll_wait()
1440	PROTOTYPE:	1302	PROTOTYPE:
1441	CODE:	1303	CODE:
1442	if (nreqs)
1443	poll_wait ();	1304	poll_wait ();
1444		1305
1445	int	1306	int
1446	nreqs()	1307	nreqs()
1447	PROTOTYPE:	1308	PROTOTYPE:
1448	CODE:	1309	CODE:
1449	RETVAL = nreqs;	1310	RETVAL = eio_nreqs ();
1450	OUTPUT:	1311	OUTPUT:
1451	RETVAL	1312	RETVAL
1452		1313
		1314	int
		1315	nready()
		1316	PROTOTYPE:
		1317	CODE:
		1318	RETVAL = eio_nready ();
		1319	OUTPUT:
		1320	RETVAL
		1321
		1322	int
		1323	npending()
		1324	PROTOTYPE:
		1325	CODE:
		1326	RETVAL = eio_npending ();
		1327	OUTPUT:
		1328	RETVAL
		1329
		1330	int
		1331	nthreads()
		1332	PROTOTYPE:
		1333	CODE:
		1334	RETVAL = eio_nthreads ();
		1335	OUTPUT:
		1336	RETVAL
		1337
		1338	int
		1339	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1340	PROTOTYPE: $$$$
		1341	CODE:
		1342	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1343	RETVAL = posix_fadvise (fh, offset, length, advice);
		1344	#else
		1345	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1346	#endif
		1347	OUTPUT:
		1348	RETVAL
		1349
		1350	ssize_t
		1351	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1352	PROTOTYPE: $$$$
		1353	CODE:
		1354	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1355	OUTPUT:
		1356	RETVAL
		1357
		1358	void
		1359	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1360	PROTOTYPE: $$$$$;$
		1361	PPCODE:
		1362	sv_unmagic (scalar, MMAP_MAGIC);
		1363	{
		1364	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1365	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1366	if (addr == (void *)-1)
		1367	XSRETURN_NO;
		1368
		1369	/* we store the length in mg_obj, as namlen is I32 :/ */
		1370	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1371	->mg_obj = (SV *)length;
		1372
		1373	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1374	if (!(prot & PROT_WRITE))
		1375	SvREADONLY_on (scalar);
		1376
		1377	SvPVX (scalar) = (char *)addr;
		1378	SvCUR_set (scalar, length);
		1379	SvLEN_set (scalar, 0);
		1380	SvPOK_only (scalar);
		1381
		1382	XSRETURN_YES;
		1383	}
		1384
		1385	void
		1386	munmap (SV *scalar)
		1387	PROTOTYPE: $
		1388	CODE:
		1389	sv_unmagic (scalar, MMAP_MAGIC);
		1390
		1391	int
		1392	mlockall (int flags)
		1393	PROTOTYPE: $
		1394	CODE:
		1395	#if _POSIX_MEMLOCK
		1396	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1397	extern int mallopt (int, int);
		1398	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1399	#endif
		1400	mlockall (flags);
		1401	#else
		1402	RETVAL = -1;
		1403	errno = ENOSYS;
		1404	#endif
		1405	OUTPUT:
		1406	RETVAL
		1407
		1408	int
		1409	munlockall ()
		1410	PROTOTYPE:
		1411	CODE:
		1412	#if _POSIX_MEMLOCK
		1413	munlockall ();
		1414	#else
		1415	RETVAL = -1;
		1416	errno = ENOSYS;
		1417	#endif
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	void _on_next_submit (SV *cb)
		1422	CODE:
		1423	SvREFCNT_dec (on_next_submit);
		1424	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1425
1453	PROTOTYPES: DISABLE	1426	PROTOTYPES: DISABLE
1454		1427
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1428	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1429
1457	void	1430	void
1458	cancel (aio_req_ornot req)	1431	cancel (aio_req_ornot req)
1459	CODE:	1432	CODE:
1460	req_cancel (req);	1433	eio_cancel (req);
1461		1434
1462	void	1435	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1436	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1437	PPCODE:
		1438	{
		1439	if (GIMME_V != G_VOID)
		1440	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1441
		1442	if (items > 1)
		1443	{
		1444	SV *cb_cv =get_cb (callback);
		1445
1465	SvREFCNT_dec (req->callback);	1446	SvREFCNT_dec (req->callback);
1466	req->callback = newSVsv (callback);	1447	req->callback = SvREFCNT_inc (cb_cv);
		1448	}
		1449	}
1467		1450
1468	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1451	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1469		1452
1470	void	1453	void
1471	add (aio_req grp, ...)	1454	add (aio_req grp, ...)
1472	PPCODE:	1455	PPCODE:
1473	{	1456	{
1474	int i;	1457	int i;
1475	aio_req req;
1476		1458
1477	if (grp->fd == 2)	1459	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1460	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1461
1480	for (i = 1; i < items; ++i )	1462	for (i = 1; i < items; ++i )
1481	{	1463	{
		1464	aio_req req;
		1465
1482	if (GIMME_V != G_VOID)	1466	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1467	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1468
1485	req = SvAIO_REQ (ST (i));	1469	req = SvAIO_REQ (ST (i));
1486		1470
1487	if (req)	1471	if (req)
1488	{	1472	eio_grp_add (grp, req);
1489	++grp->length;
1490	req->grp = grp;
1491
1492	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;
1494
1495	if (grp->grp_first)
1496	grp->grp_first->grp_prev = req;
1497
1498	grp->grp_first = req;
1499	}
1500	}	1473	}
1501	}	1474	}
1502		1475
1503	void	1476	void
1504	cancel_subs (aio_req_ornot req)	1477	cancel_subs (aio_req_ornot req)
…		…
1508	void	1481	void
1509	result (aio_req grp, ...)	1482	result (aio_req grp, ...)
1510	CODE:	1483	CODE:
1511	{	1484	{
1512	int i;	1485	int i;
		1486	AV *av;
		1487
		1488	grp->errorno = errno;
		1489
1513	AV *av = newAV ();	1490	av = newAV ();
		1491	av_extend (av, items - 1);
1514		1492
1515	for (i = 1; i < items; ++i )	1493	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1494	av_push (av, newSVsv (ST (i)));
1517		1495
1518	SvREFCNT_dec (grp->data);	1496	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1497	grp->sv1 = (SV *)av;
1520	}	1498	}
		1499
		1500	void
		1501	errno (aio_req grp, int errorno = errno)
		1502	CODE:
		1503	grp->errorno = errorno;
1521		1504
1522	void	1505	void
1523	limit (aio_req grp, int limit)	1506	limit (aio_req grp, int limit)
1524	CODE:	1507	CODE:
1525	grp->fd2 = limit;	1508	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1509
1528	void	1510	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1511	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1512	CODE:
1531	{	1513	{
1532	SvREFCNT_dec (grp->fh2);	1514	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1515	grp->sv2 = newSVsv (callback);
		1516	grp->feed = aio_grp_feed;
1534		1517
1535	if (grp->fd2 <= 0)	1518	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1519	grp->int2 = 2;
1537		1520
1538	aio_grp_feed (grp);	1521	eio_grp_limit (grp, grp->int2);
1539	}	1522	}
1540		1523

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