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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.182 by root, Thu May 19 22:57:04 2011 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
18	#include <limits.h>	17	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	18	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	19	#include <sched.h>
23		20
24	#if HAVE_SENDFILE	21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>	22	# include <sys/mman.h>
27	# elif __freebsd	23	#endif
28	# 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
29	# include <sys/uio.h>	68	# include <sys/time.h>
30	# elif __hpux
31	# include <sys/socket.h>
32	# elif __solaris /* not yet */
33	# 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/config.h"
		124	#include "libeio/eio.h"
		125
		126	/* Linux/others */
		127	#ifndef O_ASYNC
		128	# define O_ASYNC 0
		129	#endif
		130	#ifndef O_DIRECT
		131	# define O_DIRECT 0
		132	#endif
		133	#ifndef O_NOATIME
		134	# define O_NOATIME 0
		135	#endif
		136
		137	/* POSIX */
		138	#ifndef O_CLOEXEC
		139	# define O_CLOEXEC 0
		140	#endif
		141	#ifndef O_NOFOLLOW
		142	# define O_NOFOLLOW 0
		143	#endif
		144	#ifndef O_NOCTTY
		145	# define O_NOCTTY 0
		146	#endif
		147	#ifndef O_NONBLOCK
		148	# define O_NONBLOCK 0
		149	#endif
		150	#ifndef O_EXEC
		151	# define O_EXEC 0
		152	#endif
		153	#ifndef O_SEARCH
		154	# define O_SEARCH 0
		155	#endif
		156	#ifndef O_DIRECTORY
		157	# define O_DIRECTORY 0
		158	#endif
		159	#ifndef O_DSYNC
		160	# define O_DSYNC 0
		161	#endif
		162	#ifndef O_RSYNC
		163	# define O_RSYNC 0
		164	#endif
		165	#ifndef O_SYNC
		166	# define O_SYNC 0
		167	#endif
		168	#ifndef O_TTY_INIT
		169	# define O_TTY_INIT 0
		170	#endif
		171
		172	#ifndef POSIX_FADV_NORMAL
		173	# define POSIX_FADV_NORMAL 0
		174	#endif
		175	#ifndef POSIX_FADV_SEQUENTIAL
		176	# define POSIX_FADV_SEQUENTIAL 0
		177	#endif
		178	#ifndef POSIX_FADV_RANDOM
		179	# define POSIX_FADV_RANDOM 0
		180	#endif
		181	#ifndef POSIX_FADV_NOREUSE
		182	# define POSIX_FADV_NOREUSE 0
		183	#endif
		184	#ifndef POSIX_FADV_WILLNEED
		185	# define POSIX_FADV_WILLNEED 0
		186	#endif
		187	#ifndef POSIX_FADV_DONTNEED
		188	# define POSIX_FADV_DONTNEED 0
		189	#endif
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#ifndef POSIX_MADV_NORMAL
		196	# define POSIX_MADV_NORMAL 0
		197	#endif
		198	#ifndef POSIX_MADV_SEQUENTIAL
		199	# define POSIX_MADV_SEQUENTIAL 0
		200	#endif
		201	#ifndef POSIX_MADV_RANDOM
		202	# define POSIX_MADV_RANDOM 0
		203	#endif
		204	#ifndef POSIX_MADV_WILLNEED
		205	# define POSIX_MADV_WILLNEED 0
		206	#endif
		207	#ifndef POSIX_MADV_DONTNEED
		208	# define POSIX_MADV_DONTNEED 0
		209	#endif
		210
		211	#if !HAVE_POSIX_MADVISE
		212	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		213	#endif
		214
		215	#ifndef PROT_NONE
		216	# define PROT_NONE 0
		217	#endif
		218	#ifndef PROT_READ
		219	# define PROT_READ 0
		220	#endif
		221	#ifndef PROT_WRITE
		222	# define PROT_READ 0
		223	#endif
		224	#ifndef PROT_EXEC
		225	# define PROT_EXEC 0
		226	#endif
		227
		228	#ifndef ST_NODEV
		229	# define ST_NODEV 0
		230	#endif
		231	#ifndef ST_NOEXEC
		232	# define ST_NOEXEC 0
		233	#endif
		234	#ifndef ST_SYNCHRONOUS
		235	# define ST_SYNCHRONOUS 0
		236	#endif
		237	#ifndef ST_MANDLOCK
		238	# define ST_MANDLOCK 0
		239	#endif
		240	#ifndef ST_WRITE
		241	# define ST_WRITE 0
		242	#endif
		243	#ifndef ST_APPEND
		244	# define ST_APPEND 0
		245	#endif
		246	#ifndef ST_IMMUTABLE
		247	# define ST_IMMUTABLE 0
		248	#endif
		249	#ifndef ST_NOATIME
		250	# define ST_NOATIME 0
		251	#endif
		252	#ifndef ST_NODIRATIME
		253	# define ST_NODIRATIME 0
		254	#endif
		255	#ifndef ST_RELATIME
		256	# define ST_RELATIME 0
		257	#endif
		258
		259	#ifndef S_IFIFO
		260	# define S_IFIFO 0
		261	#endif
		262	#ifndef S_IFCHR
		263	# define S_IFCHR 0
		264	#endif
		265	#ifndef S_IFBLK
		266	# define S_IFBLK 0
		267	#endif
		268	#ifndef S_IFLNK
		269	# define S_IFLNK 0
		270	#endif
		271	#ifndef S_IFREG
		272	# define S_IFREG 0
		273	#endif
		274	#ifndef S_IFDIR
		275	# define S_IFDIR 0
		276	#endif
		277	#ifndef S_IFWHT
		278	# define S_IFWHT 0
		279	#endif
		280	#ifndef S_IFSOCK
		281	# define S_IFSOCK 0
		282	#endif
		283
		284	#ifndef MAP_ANONYMOUS
		285	# ifdef MAP_ANON
		286	# define MAP_ANONYMOUS MAP_ANON
34	# else	287	# else
35	# error sendfile support requested but not available	288	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	289	# endif
37	#endif	290	#endif
38		291	#ifndef MAP_HUGETLB
39	/* number of seconds after which idle threads exit */	292	# define MAP_HUGETLB 0
40	#define IDLE_TIMEOUT 10
41
42	/* used for struct dirent, AIX doesn't provide it */
43	#ifndef NAME_MAX
44	# define NAME_MAX 4096
45	#endif	293	#endif
		294	#ifndef MAP_LOCKED
		295	# define MAP_LOCKED 0
		296	#endif
		297	#ifndef MAP_NORESERVE
		298	# define MAP_NORESERVE 0
		299	#endif
		300	#ifndef MAP_POPULATE
		301	# define MAP_POPULATE 0
		302	#endif
		303	#ifndef MAP_NONBLOCK
		304	# define MAP_NONBLOCK 0
		305	#endif
46		306
47	/* buffer size for various temporary buffers */	307	#ifndef makedev
48	#define AIO_BUFSIZE 65536	308	# define makedev(maj,min) (((maj) << 8) | (min))
		309	#endif
		310	#ifndef major
		311	# define major(dev) ((dev) >> 8)
		312	#endif
		313	#ifndef minor
		314	# define minor(dev) ((dev) & 0xff)
		315	#endif
49		316
50	#define dBUF \	317	#ifndef PAGESIZE
51	char *aio_buf; \	318	# define PAGESIZE sysconf (_SC_PAGESIZE)
52	LOCK (wrklock); \	319	#endif
53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
54	UNLOCK (wrklock); \
55	if (!aio_buf) \
56	return -1;
57		320
58	typedef SV SV8; /* byte-sv, used for argument-checking */	321	static int req_invoke (eio_req *req);
		322	#define EIO_FINISH(req) req_invoke (req)
		323	static void req_destroy (eio_req *grp);
		324	#define EIO_DESTROY(req) req_destroy (req)
59		325
60	enum {	326	enum {
61	REQ_QUIT,	327	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
62	REQ_OPEN, REQ_CLOSE,
63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
64	REQ_SENDFILE,
65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66	REQ_FSYNC, REQ_FDATASYNC,
67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68	REQ_MKNOD, REQ_READDIR,
69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70	REQ_GROUP, REQ_NOP,
71	REQ_BUSY,
72	};	328	};
73		329
74	#define AIO_REQ_KLASS "IO::AIO::REQ"	330	#include "libeio/eio.c"
75	#define AIO_GRP_KLASS "IO::AIO::GRP"
76		331
77	typedef struct aio_cb
78	{
79	struct aio_cb *volatile next;
80
81	SV *callback, *fh;
82	SV *sv1, *sv2;
83	void *ptr1, *ptr2;
84	off_t offs;
85	size_t size;
86	ssize_t result;
87
88	STRLEN stroffset;
89	int type;
90	int int1, int2;
91	int errorno;
92	mode_t mode; /* open */
93
94	unsigned char flags;
95	unsigned char pri;
96
97	SV *self; /* the perl counterpart of this request, if any */
98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
99	} aio_cb;
100
101	enum {
102	FLAG_CANCELLED = 0x01, /* request was cancelled */
103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105	};
106
107	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
108	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
109		334
110	enum {	335	static SV *on_next_submit;
111	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
112	PRI_MAX = 4,	337	static int max_outstanding;
113		338
114	DEFAULT_PRI = 0,	339	static s_epipe respipe;
115	PRI_BIAS = -PRI_MIN,
116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117	};
118		340
119	#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121	static unsigned int max_poll_time = 0;
122	static unsigned int max_poll_reqs = 0;
123
124	/* calculcate time difference in ~1/AIO_TICKS of a second */
125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126	{
127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
129	}
130
131	static thread_t main_tid;
132	static int main_sig;
133	static int block_sig_level;
134
135	void block_sig ()
136	{
137	sigset_t ss;
138
139	if (block_sig_level++)
140	return;
141
142	if (!main_sig)
143	return;
144
145	sigemptyset (&ss);
146	sigaddset (&ss, main_sig);
147	pthread_sigmask (SIG_BLOCK, &ss, 0);
148	}
149
150	void unblock_sig ()
151	{
152	sigset_t ss;
153
154	if (--block_sig_level)
155	return;
156
157	if (!main_sig)
158	return;
159
160	sigemptyset (&ss);
161	sigaddset (&ss, main_sig);
162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	/* worker threads management */
170	static mutex_t wrklock = MUTEX_INIT;
171
172	typedef struct worker {
173	/* locked by wrklock */
174	struct worker *prev, *next;
175
176	thread_t tid;
177
178	/* locked by reslock, reqlock or wrklock */
179	aio_req req; /* currently processed request */
180	void *dbuf;
181	DIR *dirp;
182	} worker;
183
184	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186	static void worker_clear (worker *wrk)
187	{
188	if (wrk->dirp)
189	{
190	closedir (wrk->dirp);
191	wrk->dirp = 0;
192	}
193
194	if (wrk->dbuf)
195	{
196	free (wrk->dbuf);
197	wrk->dbuf = 0;
198	}
199	}
200
201	static void worker_free (worker *wrk)
202	{
203	wrk->next->prev = wrk->prev;
204	wrk->prev->next = wrk->next;
205
206	free (wrk);
207	}
208
209	static volatile unsigned int nreqs, nready, npending;
210	static volatile unsigned int max_idle = 4;
211	static volatile unsigned int max_outstanding = 0xffffffff;
212	static int respipe [2];
213
214	static mutex_t reslock = MUTEX_INIT;
215	static mutex_t reqlock = MUTEX_INIT;
216	static cond_t reqwait = COND_INIT;
217
218	#if WORDACCESS_UNSAFE
219
220	static unsigned int get_nready ()
221	{
222	unsigned int retval;
223
224	LOCK (reqlock);
225	retval = nready;
226	UNLOCK (reqlock);
227
228	return retval;
229	}
230
231	static unsigned int get_npending ()
232	{
233	unsigned int retval;
234
235	LOCK (reslock);
236	retval = npending;
237	UNLOCK (reslock);
238
239	return retval;
240	}
241
242	static unsigned int get_nthreads ()
243	{
244	unsigned int retval;
245
246	LOCK (wrklock);
247	retval = started;
248	UNLOCK (wrklock);
249
250	return retval;
251	}
252
253	#else
254
255	# define get_nready() nready
256	# define get_npending() npending
257	# define get_nthreads() started
258
259	#endif
260
261	/*
262	* a somewhat faster data structure might be nice, but
263	* with 8 priorities this actually needs <20 insns
264	* per shift, the most expensive operation.
265	*/
266	typedef struct {
267	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268	int size;
269	} reqq;
270
271	static reqq req_queue;
272	static reqq res_queue;
273
274	int reqq_push (reqq *q, aio_req req)
275	{
276	int pri = req->pri;
277	req->next = 0;
278
279	if (q->qe[pri])
280	{
281	q->qe[pri]->next = req;
282	q->qe[pri] = req;
283	}
284	else
285	q->qe[pri] = q->qs[pri] = req;
286
287	return q->size++;
288	}
289
290	aio_req reqq_shift (reqq *q)
291	{
292	int pri;
293
294	if (!q->size)
295	return 0;
296
297	--q->size;
298
299	for (pri = NUM_PRI; pri--; )
300	{
301	aio_req req = q->qs[pri];
302
303	if (req)
304	{
305	if (!(q->qs[pri] = req->next))
306	q->qe[pri] = 0;
307
308	return req;
309	}
310	}
311
312	abort ();
313	}
314
315	static int poll_cb ();
316	static int req_invoke (aio_req req);
317	static void req_free (aio_req req);	341	static void req_destroy (aio_req req);
318	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
319		343
		344	static void want_poll (void)
		345	{
		346	/* write a dummy byte to the pipe so fh becomes ready */
		347	s_epipe_signal (&respipe);
		348	}
		349
		350	static void done_poll (void)
		351	{
		352	/* read any signals sent by the worker threads */
		353	s_epipe_drain (&respipe);
		354	}
		355
320	/* must be called at most once */	356	/* must be called at most once */
321	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
322	{	358	{
323	if (!req->self)	359	if (!req->self)
324	{	360	{
325	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
326	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327	}	363	}
328		364
329	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330	}	366	}
331		367
332	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
333	{	369	{
334	MAGIC *mg;	370	MAGIC *mg;
335		371
336	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	372	if (!SvROK (sv)
		373	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		374	&& SvSTASH (SvRV (sv)) != aio_req_stash
		375	&& !sv_derived_from (sv, "IO::AIO::REQ")))
337	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
338		377
339	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340		379
341	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
342	}	381	}
343		382
344	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
345	{	384	{
346	block_sig ();	385	if (grp->sv2 && SvOK (grp->sv2))
347
348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349	{	386	{
350	int old_len = grp->size;
351
352	if (grp->sv2 && SvOK (grp->sv2))
353	{
354	dSP;	387	dSP;
355		388
356	ENTER;	389	ENTER;
357	SAVETMPS;	390	SAVETMPS;
358	PUSHMARK (SP);	391	PUSHMARK (SP);
359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
360	PUTBACK;	393	PUTBACK;
361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362	SPAGAIN;	395	SPAGAIN;
363	FREETMPS;	396	FREETMPS;
364	LEAVE;	397	LEAVE;
365	}
366
367	/* stop if no progress has been made */
368	if (old_len == grp->size)
369	{
370	SvREFCNT_dec (grp->sv2);
371	grp->sv2 = 0;
372	break;
373	}
374	}	398	}
375
376	unblock_sig ();
377	}	399	}
378		400
379	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
380	{	402	{
381	--grp->size;	403	eio_submit (req);
382		404
383	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
384	aio_grp_feed (grp);
385
386	/* finish, if done */
387	if (!grp->size && grp->int1)
388	{	406	{
389	block_sig ();	407	dSP;
		408	SV *cb = sv_2mortal (on_next_submit);
390		409
391	if (!req_invoke (grp))	410	on_next_submit = 0;
392	{
393	req_free (grp);
394	unblock_sig ();
395	croak (0);
396	}
397		411
398	req_free (grp);	412	PUSHMARK (SP);
399	unblock_sig ();	413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
400	}	415	}
401	}	416	}
402		417
403	static int req_invoke (aio_req req)	418	static int req_invoke (eio_req *req)
404	{	419	{
405	dSP;
406
407	if (req->flags & FLAG_SV1_RO_OFF)	420	if (req->flags & FLAG_SV2_RO_OFF)
408	SvREADONLY_off (req->sv1);	421	SvREADONLY_off (req->sv2);
409		422
410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	423	if (!EIO_CANCELLED (req) && req->callback)
411	{	424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
412	ENTER;	429	ENTER;
413	SAVETMPS;	430	SAVETMPS;
414	PUSHMARK (SP);	431	PUSHMARK (SP);
415	EXTEND (SP, 1);	432	EXTEND (SP, 1);
416		433
		434	/* do not recreate the result IV from scratch each time */
		435	if (expect_true (sv_result_cache))
		436	{
		437	sv_result = sv_result_cache; sv_result_cache = 0;
		438	SvIV_set (sv_result, req->result);
		439	SvIOK_only (sv_result);
		440	}
		441	else
		442	{
		443	sv_result = newSViv (req->result);
		444	SvREADONLY_on (sv_result);
		445	}
		446
417	switch (req->type)	447	switch (req->type)
418	{	448	{
419	case REQ_READDIR:	449	case EIO_READDIR:
420	{	450	{
421	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
422		452
423	if (req->result >= 0)	453	if (req->result >= 0)
424	{	454	{
425	int i;	455	int i;
426	char *buf = req->ptr2;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427	AV *av = newAV ();	458	AV *av = newAV ();
428		459
429	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
430		461
431	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
432	{	463	{
433	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434		467
		468	if (req->int1 & EIO_READDIR_CUSTOM2)
		469	{
		470	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		471	AV *avent = newAV ();
		472
		473	av_extend (avent, 2);
		474
		475	if (!sv_type [ent->type])
		476	{
		477	sv_type [ent->type] = newSViv (ent->type);
		478	SvREADONLY_on (sv_type [ent->type]);
		479	}
		480
		481	av_store (avent, 0, namesv);
		482	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		483	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		484
		485	av_store (av, i, newRV_noinc ((SV *)avent));
		486	}
		487	else
435	av_store (av, i, sv);	488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
		494	SV *name = newSVpv (names, 0);
		495	av_store (av, i, name);
436	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
437	}	498	}
438		499
439	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
440	}	501	}
441		502
442	PUSHs (rv);	503	PUSHs (rv);
		504
		505	if (req->int1 & EIO_READDIR_CUSTOM1)
		506	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
443	}	507	}
444	break;	508	break;
445		509
446	case REQ_OPEN:	510	case EIO_OPEN:
447	{	511	{
448	/* convert fd to fh */	512	/* convert fd to fh */
449	SV *fh;	513	SV *fh = &PL_sv_undef;
450		514
451	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
452	PUTBACK;	516	{
453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
454	SPAGAIN;	518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		519	char sym [64];
		520	int symlen;
		521
		522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		523	gv_init (gv, aio_stash, sym, symlen, 0);
455		524
456	fh = POPs;	525	symlen = snprintf (
457	PUSHMARK (SP);	526	sym,
		527	sizeof (sym),
		528	"%s&=%d",
		529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		530	(int)req->result
		531	);
		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
458	XPUSHs (fh);	537	PUSHs (fh);
459	}	538	}
460	break;	539	break;
461		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	if (req->result >= 0)
		547	{
		548	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		549	HV *hv = newHV ();
		550
		551	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		552
		553	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		554	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		555	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		556	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		557	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		558	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		559	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		560	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		561	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		562	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		563	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		564	}
		565
		566	PUSHs (rv);
		567	}
		568
		569	break;
		570
462	case REQ_GROUP:	571	case EIO_GROUP:
463	req->int1 = 2; /* mark group as finished */	572	req->int1 = 2; /* mark group as finished */
464		573
465	if (req->sv1)	574	if (req->sv1)
466	{	575	{
467	int i;	576	int i;
…		…
471	for (i = 0; i <= AvFILL (av); ++i)	580	for (i = 0; i <= AvFILL (av); ++i)
472	PUSHs (*av_fetch (av, i, 0));	581	PUSHs (*av_fetch (av, i, 0));
473	}	582	}
474	break;	583	break;
475		584
476	case REQ_NOP:	585	case EIO_NOP:
477	case REQ_BUSY:	586	case EIO_BUSY:
478	break;	587	break;
479		588
480	case REQ_READLINK:	589	case EIO_READLINK:
481	if (req->result > 0)	590	if (req->result > 0)
482	{	591	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
483	SvCUR_set (req->sv1, req->result);
484	*SvEND (req->sv1) = 0;
485	PUSHs (req->sv1);
486	}
487	break;	592	break;
488		593
489	case REQ_STAT:	594	case EIO_STAT:
490	case REQ_LSTAT:	595	case EIO_LSTAT:
491	case REQ_FSTAT:	596	case EIO_FSTAT:
492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	597	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
493	PL_laststatval = req->result;	598	PL_laststatval = req->result;
494	PL_statcache = *(Stat_t *)(req->ptr2);	599	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
495	PUSHs (sv_2mortal (newSViv (req->result)));	600	PUSHs (sv_result);
496	break;	601	break;
497		602
498	case REQ_READ:	603	case EIO_READ:
		604	{
499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	605	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
500	*SvEND (req->sv1) = 0;	606	*SvEND (req->sv2) = 0;
501	PUSHs (sv_2mortal (newSViv (req->result)));	607	SvPOK_only (req->sv2);
		608	SvSETMAGIC (req->sv2);
		609	PUSHs (sv_result);
		610	}
502	break;	611	break;
503		612
		613	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		614	if (req->result > 0)
		615	SvIV_set (sv_result, 0);
		616	/* FALLTHROUGH */
		617
504	default:	618	default:
505	PUSHs (sv_2mortal (newSViv (req->result)));	619	PUSHs (sv_result);
506	break;	620	break;
507	}	621	}
508		622
509	errno = req->errorno;	623	errno = req->errorno;
510		624
511	PUTBACK;	625	PUTBACK;
512	call_sv (req->callback, G_VOID | G_EVAL);	626	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513	SPAGAIN;	627	SPAGAIN;
		628
		629	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		630	SvREFCNT_dec (sv_result);
		631	else
		632	sv_result_cache = sv_result;
514		633
515	FREETMPS;	634	FREETMPS;
516	LEAVE;	635	LEAVE;
		636
		637	PUTBACK;
517	}	638	}
518		639
519	if (req->grp)
520	{
521	aio_req grp = req->grp;
522
523	/* unlink request */
524	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527	if (grp->grp_first == req)
528	grp->grp_first = req->grp_next;
529
530	aio_grp_dec (grp);
531	}
532
533	return !SvTRUE (ERRSV);	640	return !!SvTRUE (ERRSV);
534	}	641	}
535		642
536	static void req_free (aio_req req)	643	static void req_destroy (aio_req req)
537	{	644	{
538	if (req->self)	645	if (req->self)
539	{	646	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	647	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	648	SvREFCNT_dec (req->self);
542	}	649	}
543		650
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	651	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	652	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	653	SvREFCNT_dec (req->callback);
548		654
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	655	Safefree (req);
553	}	656	}
554		657
555	static void req_cancel_subs (aio_req grp)	658	static void req_cancel_subs (aio_req grp)
556	{	659	{
557	aio_req sub;	660	aio_req sub;
558		661
559	if (grp->type != REQ_GROUP)	662	if (grp->type != EIO_GROUP)
560	return;	663	return;
561		664
562	SvREFCNT_dec (grp->sv2);	665	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	666	grp->sv2 = 0;
564		667
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	668	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	669	}
568		670
569	static void req_cancel (aio_req req)	671	static void
		672	create_respipe (void)
570	{	673	{
571	req->flags |= FLAG_CANCELLED;	674	if (s_epipe_renew (&respipe))
572		675	croak ("IO::AIO: unable to initialize result pipe");
573	req_cancel_subs (req);
574	}	676	}
575		677
576	static void *aio_proc(void *arg);
577
578	static void start_thread (void)
579	{
580	worker *wrk = calloc (1, sizeof (worker));
581
582	if (!wrk)
583	croak ("unable to allocate worker thread data");
584
585	LOCK (wrklock);
586
587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
588	{
589	wrk->prev = &wrk_first;
590	wrk->next = wrk_first.next;
591	wrk_first.next->prev = wrk;
592	wrk_first.next = wrk;
593	++started;
594	}
595	else
596	free (wrk);
597
598	UNLOCK (wrklock);
599	}
600
601	static void maybe_start_thread ()
602	{
603	if (get_nthreads () >= wanted)
604	return;
605
606	/* todo: maybe use idle here, but might be less exact */
607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608	return;
609
610	start_thread ();
611	}
612
613	static void req_send (aio_req req)
614	{
615	block_sig ();
616
617	++nreqs;
618
619	LOCK (reqlock);
620	++nready;
621	reqq_push (&req_queue, req);
622	COND_SIGNAL (reqwait);
623	UNLOCK (reqlock);
624
625	unblock_sig ();
626
627	maybe_start_thread ();
628	}
629
630	static void end_thread (void)
631	{
632	aio_req req;
633
634	Newz (0, req, 1, aio_cb);
635
636	req->type = REQ_QUIT;
637	req->pri = PRI_MAX + PRI_BIAS;
638
639	LOCK (reqlock);
640	reqq_push (&req_queue, req);
641	COND_SIGNAL (reqwait);
642	UNLOCK (reqlock);
643
644	LOCK (wrklock);
645	--started;
646	UNLOCK (wrklock);
647	}
648
649	static void set_max_idle (int nthreads)
650	{
651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
652	max_idle = nthreads <= 0 ? 1 : nthreads;
653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654	}
655
656	static void min_parallel (int nthreads)
657	{
658	if (wanted < nthreads)
659	wanted = nthreads;
660	}
661
662	static void max_parallel (int nthreads)
663	{
664	if (wanted > nthreads)
665	wanted = nthreads;
666
667	while (started > wanted)
668	end_thread ();
669	}
670
671	static void poll_wait ()	678	static void poll_wait (void)
672	{	679	{
673	fd_set rfd;
674
675	while (nreqs)	680	while (eio_nreqs ())
676	{	681	{
677	int size;	682	int size;
678	if (WORDACCESS_UNSAFE) LOCK (reslock);	683
		684	X_LOCK (reslock);
679	size = res_queue.size;	685	size = res_queue.size;
680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	686	X_UNLOCK (reslock);
681		687
682	if (size)	688	if (size)
683	return;	689	return;
684		690
685	maybe_start_thread ();	691	etp_maybe_start_thread ();
686		692
687	FD_ZERO(&rfd);	693	s_epipe_wait (&respipe);
688	FD_SET(respipe [0], &rfd);
689
690	select (respipe [0] + 1, &rfd, 0, 0, 0);
691	}	694	}
692	}	695	}
693		696
694	static int poll_cb ()	697	static int poll_cb (void)
695	{	698	{
696	dSP;
697	int count = 0;
698	int maxreqs = max_poll_reqs;
699	int do_croak = 0;
700	struct timeval tv_start, tv_now;
701	aio_req req;
702
703	if (max_poll_time)
704	gettimeofday (&tv_start, 0);
705
706	block_sig ();
707
708	for (;;)	699	for (;;)
709	{	700	{
710	for (;;)	701	int res = eio_poll ();
711	{
712	maybe_start_thread ();
713		702
714	LOCK (reslock);	703	if (res > 0)
715	req = reqq_shift (&res_queue);
716
717	if (req)
718	{
719	--npending;
720
721	if (!res_queue.size)
722	{
723	/* read any signals sent by the worker threads */
724	char buf [4];
725	while (read (respipe [0], buf, 4) == 4)
726	;
727	}
728	}
729
730	UNLOCK (reslock);
731
732	if (!req)
733	break;
734
735	--nreqs;
736
737	if (req->type == REQ_GROUP && req->size)
738	{
739	req->int1 = 1; /* mark request as delayed */
740	continue;
741	}
742	else
743	{
744	if (!req_invoke (req))
745	{
746	req_free (req);
747	unblock_sig ();
748	croak (0);	704	croak (0);
749	}
750		705
751	count++;	706	if (!max_outstanding || max_outstanding > eio_nreqs ())
752	}	707	return res;
753
754	req_free (req);
755
756	if (maxreqs && !--maxreqs)
757	break;
758
759	if (max_poll_time)
760	{
761	gettimeofday (&tv_now, 0);
762
763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764	break;
765	}
766	}
767
768	if (nreqs <= max_outstanding)
769	break;
770		708
771	poll_wait ();	709	poll_wait ();
772
773	++maxreqs;
774	}	710	}
775
776	unblock_sig ();
777	return count;
778	}	711	}
779		712
780	static void create_pipe ()	713	static void atfork_child (void)
781	{	714	{
782	if (pipe (respipe))	715	create_respipe ();
783	croak ("unable to initialize result pipe");
784
785	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
786	croak ("cannot set result pipe to nonblocking mode");
787
788	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790	}	716	}
791		717
792	/*****************************************************************************/	718	/*****************************************************************************/
793	/* work around various missing functions */
794		719
795	#if !HAVE_PREADWRITE	720	#if !_POSIX_MAPPED_FILES
796	# define pread aio_pread	721	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
797	# define pwrite aio_pwrite	722	# define munmap(addr,length) (errno = ENOSYS, -1)
798
799	/*
800	* make our pread/pwrite safe against themselves, but not against
801	* normal read/write by using a mutex. slows down execution a lot,
802	* but that's your problem, not mine.
803	*/
804	static mutex_t preadwritelock = MUTEX_INIT;
805
806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807	{
808	ssize_t res;
809	off_t ooffset;
810
811	LOCK (preadwritelock);
812	ooffset = lseek (fd, 0, SEEK_CUR);
813	lseek (fd, offset, SEEK_SET);
814	res = read (fd, buf, count);
815	lseek (fd, ooffset, SEEK_SET);
816	UNLOCK (preadwritelock);
817
818	return res;
819	}
820
821	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822	{
823	ssize_t res;
824	off_t ooffset;
825
826	LOCK (preadwritelock);
827	ooffset = lseek (fd, 0, SEEK_CUR);
828	lseek (fd, offset, SEEK_SET);
829	res = write (fd, buf, count);
830	lseek (fd, offset, SEEK_SET);
831	UNLOCK (preadwritelock);
832
833	return res;
834	}
835	#endif
836
837	#if !HAVE_FDATASYNC
838	# define fdatasync fsync
839	#endif
840
841	#if !HAVE_READAHEAD
842	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845	{
846	dBUF;
847
848	while (count > 0)
849	{
850	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852	pread (fd, aio_buf, len, offset);
853	offset += len;
854	count -= len;
855	}
856
857	errno = 0;
858	}
859
860	#endif
861
862	#if !HAVE_READDIR_R
863	# define readdir_r aio_readdir_r
864
865	static mutex_t readdirlock = MUTEX_INIT;
866
867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868	{
869	struct dirent *e;
870	int errorno;
871
872	LOCK (readdirlock);
873
874	e = readdir (dirp);
875	errorno = errno;
876
877	if (e)
878	{
879	*res = ent;
880	strcpy (ent->d_name, e->d_name);
881	}
882	else
883	*res = 0;
884
885	UNLOCK (readdirlock);
886
887	errno = errorno;
888	return e ? 0 : -1;
889	}
890	#endif
891
892	/* sendfile always needs emulation */
893	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894	{
895	ssize_t res;
896
897	if (!count)
898	return 0;
899
900	#if HAVE_SENDFILE
901	# if __linux
902	res = sendfile (ofd, ifd, &offset, count);
903
904	# elif __freebsd
905	/*
906	* Of course, the freebsd sendfile is a dire hack with no thoughts
907	* wasted on making it similar to other I/O functions.
908	*/
909	{
910	off_t sbytes;
911	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913	if (res < 0 && sbytes)
914	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915	res = sbytes;
916	}
917
918	# elif __hpux
919	res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921	# elif __solaris
922	{
923	struct sendfilevec vec;
924	size_t sbytes;
925
926	vec.sfv_fd = ifd;
927	vec.sfv_flag = 0;
928	vec.sfv_off = offset;
929	vec.sfv_len = count;
930
931	res = sendfilev (ofd, &vec, 1, &sbytes);
932
933	if (res < 0 && sbytes)
934	res = sbytes;
935	}
936
937	# endif	723	#endif
938	#else
939	res = -1;
940	errno = ENOSYS;
941	#endif
942		724
943	if (res < 0	725	#if !_POSIX_MEMORY_PROTECTION
944	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	726	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
945	#if __solaris	727	# define PROT_NONE 0
946	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	728	# define PROT_WRITE 0
		729	# define MAP_PRIVATE 0
		730	# define MAP_SHARED 0
		731	# define MAP_FIXED 0
947	#endif	732	#endif
948	)
949	)
950	{
951	/* emulate sendfile. this is a major pain in the ass */
952	dBUF;
953		733
954	res = 0;	734	#define MMAP_MAGIC PERL_MAGIC_ext
955		735
956	while (count)	736	static int
957	{	737	mmap_free (pTHX_ SV *sv, MAGIC *mg)
958	ssize_t cnt;	738	{
959		739	int old_errno = errno;
960	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	740	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		741	errno = old_errno;
961		742
962	if (cnt <= 0)	743	mg->mg_obj = 0; /* just in case */
963	{
964	if (cnt && !res) res = -1;
965	break;
966	}
967		744
968	cnt = write (ofd, aio_buf, cnt);	745	SvREADONLY_off (sv);
969		746
970	if (cnt <= 0)	747	if (SvPVX (sv) != mg->mg_ptr)
971	{	748	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
972	if (cnt && !res) res = -1;
973	break;
974	}
975		749
976	offset += cnt;	750	SvCUR_set (sv, 0);
977	res += cnt;	751	SvPVX (sv) = 0;
978	count -= cnt;	752	SvOK_off (sv);
979	}
980	}
981		753
982	return res;	754	return 0;
983	}	755	}
984		756
985	/* read a full directory */	757	static MGVTBL mmap_vtbl = {
986	static void scandir_ (aio_req req, worker *self)	758	0, 0, 0, 0, mmap_free
987	{	759	};
988	DIR *dirp;
989	union
990	{
991	struct dirent d;
992	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993	} *u;
994	struct dirent *entp;
995	char *name, *names;
996	int memlen = 4096;
997	int memofs = 0;
998	int res = 0;
999	int errorno;
1000
1001	LOCK (wrklock);
1002	self->dirp = dirp = opendir (req->ptr1);
1003	self->dbuf = u = malloc (sizeof (*u));
1004	req->flags |= FLAG_PTR2_FREE;
1005	req->ptr2 = names = malloc (memlen);
1006	UNLOCK (wrklock);
1007
1008	if (dirp && u && names)
1009	for (;;)
1010	{
1011	errno = 0;
1012	readdir_r (dirp, &u->d, &entp);
1013
1014	if (!entp)
1015	break;
1016
1017	name = entp->d_name;
1018
1019	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020	{
1021	int len = strlen (name) + 1;
1022
1023	res++;
1024
1025	while (memofs + len > memlen)
1026	{
1027	memlen *= 2;
1028	LOCK (wrklock);
1029	req->ptr2 = names = realloc (names, memlen);
1030	UNLOCK (wrklock);
1031
1032	if (!names)
1033	break;
1034	}
1035
1036	memcpy (names + memofs, name, len);
1037	memofs += len;
1038	}
1039	}
1040
1041	if (errno)
1042	res = -1;
1043
1044	req->result = res;
1045	}
1046		760
1047	/*****************************************************************************/	761	/*****************************************************************************/
1048		762
1049	static void *aio_proc (void *thr_arg)	763	static SV *
		764	get_cb (SV *cb_sv)
1050	{	765	{
1051	aio_req req;	766	SvGETMAGIC (cb_sv);
1052	struct timespec ts;	767	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1053	worker *self = (worker *)thr_arg;
1054
1055	/* try to distribute timeouts somewhat evenly */
1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057	* (1000000000UL / 1024UL);
1058
1059	for (;;)
1060	{
1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063	LOCK (reqlock);
1064
1065	for (;;)
1066	{
1067	self->req = req = reqq_shift (&req_queue);
1068
1069	if (req)
1070	break;
1071
1072	++idle;
1073
1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075	== ETIMEDOUT)
1076	{
1077	if (idle > max_idle)
1078	{
1079	--idle;
1080	UNLOCK (reqlock);
1081	LOCK (wrklock);
1082	--started;
1083	UNLOCK (wrklock);
1084	goto quit;
1085	}
1086
1087	/* we are allowed to idle, so do so without any timeout */
1088	COND_WAIT (reqwait, reqlock);
1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090	}
1091
1092	--idle;
1093	}
1094
1095	--nready;
1096
1097	UNLOCK (reqlock);
1098
1099	errno = 0; /* strictly unnecessary */
1100
1101	if (!(req->flags & FLAG_CANCELLED))
1102	switch (req->type)
1103	{
1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115	case REQ_CLOSE: req->result = close (req->int1); break;
1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
1127	case REQ_READDIR: scandir_ (req, self); break;
1128
1129	case REQ_BUSY:
1130	{
1131	struct timeval tv;
1132
1133	tv.tv_sec = req->int1;
1134	tv.tv_usec = req->int2;
1135
1136	req->result = select (0, 0, 0, 0, &tv);
1137	}
1138
1139	case REQ_GROUP:
1140	case REQ_NOP:
1141	break;
1142
1143	case REQ_QUIT:
1144	goto quit;
1145
1146	default:
1147	req->result = ENOSYS;
1148	break;
1149	}
1150
1151	req->errorno = errno;
1152
1153	LOCK (reslock);
1154
1155	++npending;
1156
1157	if (!reqq_push (&res_queue, req))
1158	{
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	/* optionally signal the main thread asynchronously */
1163	if (main_sig)
1164	pthread_kill (main_tid, main_sig);
1165	}
1166
1167	self->req = 0;
1168	worker_clear (self);
1169
1170	UNLOCK (reslock);
1171	}
1172
1173	quit:
1174	LOCK (wrklock);
1175	worker_free (self);
1176	UNLOCK (wrklock);
1177
1178	return 0;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	static void atfork_prepare (void)
1184	{
1185	LOCK (wrklock);
1186	LOCK (reqlock);
1187	LOCK (reslock);
1188	#if !HAVE_PREADWRITE
1189	LOCK (preadwritelock);
1190	#endif
1191	#if !HAVE_READDIR_R
1192	LOCK (readdirlock);
1193	#endif
1194	}
1195
1196	static void atfork_parent (void)
1197	{
1198	#if !HAVE_READDIR_R
1199	UNLOCK (readdirlock);
1200	#endif
1201	#if !HAVE_PREADWRITE
1202	UNLOCK (preadwritelock);
1203	#endif
1204	UNLOCK (reslock);
1205	UNLOCK (reqlock);
1206	UNLOCK (wrklock);
1207	}
1208
1209	static void atfork_child (void)
1210	{
1211	aio_req prv;
1212
1213	while (prv = reqq_shift (&req_queue))
1214	req_free (prv);
1215
1216	while (prv = reqq_shift (&res_queue))
1217	req_free (prv);
1218
1219	while (wrk_first.next != &wrk_first)
1220	{
1221	worker *wrk = wrk_first.next;
1222
1223	if (wrk->req)
1224	req_free (wrk->req);
1225
1226	worker_clear (wrk);
1227	worker_free (wrk);
1228	}
1229
1230	started = 0;
1231	idle = 0;
1232	nreqs = 0;
1233	nready = 0;
1234	npending = 0;
1235
1236	close (respipe [0]);
1237	close (respipe [1]);
1238	create_pipe ();
1239
1240	atfork_parent ();
1241	}	768	}
1242		769
1243	#define dREQ \	770	#define dREQ \
		771	SV *cb_cv; \
1244	aio_req req; \	772	aio_req req; \
1245	int req_pri = next_pri; \	773	int req_pri = next_pri; \
1246	next_pri = DEFAULT_PRI + PRI_BIAS; \	774	next_pri = EIO_PRI_DEFAULT; \
1247	\	775	\
1248	if (SvOK (callback) && !SvROK (callback)) \	776	cb_cv = get_cb (callback); \
1249	croak ("callback must be undef or of reference type"); \
1250	\	777	\
1251	Newz (0, req, 1, aio_cb); \	778	Newz (0, req, 1, eio_req); \
1252	if (!req) \	779	if (!req) \
1253	croak ("out of memory during aio_req allocation"); \	780	croak ("out of memory during eio_req allocation"); \
1254	\	781	\
1255	req->callback = newSVsv (callback); \	782	req->callback = SvREFCNT_inc (cb_cv); \
1256	req->pri = req_pri	783	req->pri = req_pri
1257		784
1258	#define REQ_SEND \	785	#define REQ_SEND \
		786	PUTBACK; \
1259	req_send (req); \	787	req_submit (req); \
		788	SPAGAIN; \
1260	\	789	\
1261	if (GIMME_V != G_VOID) \	790	if (GIMME_V != G_VOID) \
1262	XPUSHs (req_sv (req, AIO_REQ_KLASS));	791	XPUSHs (req_sv (req, aio_req_stash));
1263		792
1264	MODULE = IO::AIO PACKAGE = IO::AIO	793	MODULE = IO::AIO PACKAGE = IO::AIO
1265		794
1266	PROTOTYPES: ENABLE	795	PROTOTYPES: ENABLE
1267		796
1268	BOOT:	797	BOOT:
1269	{	798	{
		799	static const struct {
		800	const char *name;
		801	IV iv;
		802	} *civ, const_iv[] = {
		803	# define const_niv(name, value) { # name, (IV) value },
		804	# define const_iv(name) { # name, (IV) name },
		805	# define const_eio(name) { # name, (IV) EIO_ ## name },
		806	const_iv (EXDEV)
		807	const_iv (ENOSYS)
		808	const_iv (O_RDONLY)
		809	const_iv (O_WRONLY)
		810	const_iv (O_RDWR)
		811	const_iv (O_CREAT)
		812	const_iv (O_TRUNC)
		813	const_iv (O_EXCL)
		814	const_iv (O_APPEND)
		815
		816	const_iv (O_ASYNC)
		817	const_iv (O_DIRECT)
		818	const_iv (O_NOATIME)
		819
		820	const_iv (O_CLOEXEC)
		821	const_iv (O_NOCTTY)
		822	const_iv (O_NOFOLLOW)
		823	const_iv (O_NONBLOCK)
		824	const_iv (O_EXEC)
		825	const_iv (O_SEARCH)
		826	const_iv (O_DIRECTORY)
		827	const_iv (O_DSYNC)
		828	const_iv (O_RSYNC)
		829	const_iv (O_SYNC)
		830	const_iv (O_TTY_INIT)
		831
		832	const_iv (S_IFIFO)
		833	const_iv (S_IFCHR)
		834	const_iv (S_IFBLK)
		835	const_iv (S_IFLNK)
		836	const_iv (S_IFREG)
		837	const_iv (S_IFDIR)
		838	const_iv (S_IFWHT)
		839	const_iv (S_IFSOCK)
		840	const_iv (S_IFMT)
		841
		842	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		843	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		844	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		845	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		846	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		847	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		848
		849	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		850	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		851	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		852	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		853	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		854
		855	const_iv (ST_RDONLY)
		856	const_iv (ST_NOSUID)
		857	const_iv (ST_NODEV)
		858	const_iv (ST_NOEXEC)
		859	const_iv (ST_SYNCHRONOUS)
		860	const_iv (ST_MANDLOCK)
		861	const_iv (ST_WRITE)
		862	const_iv (ST_APPEND)
		863	const_iv (ST_IMMUTABLE)
		864	const_iv (ST_NOATIME)
		865	const_iv (ST_NODIRATIME)
		866	const_iv (ST_RELATIME)
		867
		868	const_iv (PROT_NONE)
		869	const_iv (PROT_EXEC)
		870	const_iv (PROT_READ)
		871	const_iv (PROT_WRITE)
		872
		873	/*const_iv (MAP_FIXED)*/
		874	const_iv (MAP_PRIVATE)
		875	const_iv (MAP_SHARED)
		876	const_iv (MAP_ANONYMOUS)
		877
		878	/* linuxish */
		879	const_iv (MAP_HUGETLB)
		880	const_iv (MAP_LOCKED)
		881	const_iv (MAP_NORESERVE)
		882	const_iv (MAP_POPULATE)
		883	const_iv (MAP_NONBLOCK)
		884
		885	const_eio (MCL_FUTURE)
		886	const_eio (MCL_CURRENT)
		887
		888	const_eio (MS_ASYNC)
		889	const_eio (MS_INVALIDATE)
		890	const_eio (MS_SYNC)
		891
		892	const_eio (MT_MODIFY)
		893
		894	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		895	const_eio (SYNC_FILE_RANGE_WRITE)
		896	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		897
		898	const_eio (READDIR_DENTS)
		899	const_eio (READDIR_DIRS_FIRST)
		900	const_eio (READDIR_STAT_ORDER)
		901	const_eio (READDIR_FOUND_UNKNOWN)
		902
		903	const_eio (DT_UNKNOWN)
		904	const_eio (DT_FIFO)
		905	const_eio (DT_CHR)
		906	const_eio (DT_DIR)
		907	const_eio (DT_BLK)
		908	const_eio (DT_REG)
		909	const_eio (DT_LNK)
		910	const_eio (DT_SOCK)
		911	const_eio (DT_WHT)
		912	};
		913
1270	HV *stash = gv_stashpv ("IO::AIO", 1);	914	aio_stash = gv_stashpv ("IO::AIO" , 1);
		915	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		916	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1271		917
1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	918	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	919	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279		920
		921	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		922
1280	create_pipe ();	923	create_respipe ();
1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282	}
1283		924
		925	if (eio_init (want_poll, done_poll) < 0)
		926	croak ("IO::AIO: unable to initialise eio library");
		927
		928	/* atfork child called in fifo order, so before eio's handler */
		929	X_THREAD_ATFORK (0, 0, atfork_child);
		930	}
		931
1284	void	932	void
1285	max_poll_reqs (int nreqs)	933	max_poll_reqs (unsigned int nreqs)
1286	PROTOTYPE: $	934	PROTOTYPE: $
1287	CODE:	935	CODE:
1288	max_poll_reqs = nreqs;	936	eio_set_max_poll_reqs (nreqs);
1289		937
1290	void	938	void
1291	max_poll_time (double nseconds)	939	max_poll_time (double nseconds)
1292	PROTOTYPE: $	940	PROTOTYPE: $
1293	CODE:	941	CODE:
1294	max_poll_time = nseconds * AIO_TICKS;	942	eio_set_max_poll_time (nseconds);
1295		943
1296	void	944	void
1297	min_parallel (int nthreads)	945	min_parallel (unsigned int nthreads)
1298	PROTOTYPE: $
1299
1300	void
1301	max_parallel (int nthreads)
1302	PROTOTYPE: $
1303
1304	void
1305	max_idle (int nthreads)
1306	PROTOTYPE: $	946	PROTOTYPE: $
1307	CODE:	947	CODE:
1308	set_max_idle (nthreads);	948	eio_set_min_parallel (nthreads);
1309		949
1310	int	950	void
1311	max_outstanding (int maxreqs)	951	max_parallel (unsigned int nthreads)
1312	PROTOTYPE: $	952	PROTOTYPE: $
1313	CODE:	953	CODE:
1314	RETVAL = max_outstanding;	954	eio_set_max_parallel (nthreads);
		955
		956	void
		957	max_idle (unsigned int nthreads)
		958	PROTOTYPE: $
		959	CODE:
		960	eio_set_max_idle (nthreads);
		961
		962	void
		963	idle_timeout (unsigned int seconds)
		964	PROTOTYPE: $
		965	CODE:
		966	eio_set_idle_timeout (seconds);
		967
		968	void
		969	max_outstanding (unsigned int maxreqs)
		970	PROTOTYPE: $
		971	CODE:
1315	max_outstanding = maxreqs;	972	max_outstanding = maxreqs;
1316	OUTPUT:
1317	RETVAL
1318		973
1319	void	974	void
1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	975	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1321	SV8 * pathname
1322	int flags
1323	int mode
1324	SV * callback
1325	PROTOTYPE: $$$;$
1326	PPCODE:	976	PPCODE:
1327	{	977	{
1328	dREQ;	978	dREQ;
1329		979
1330	req->type = REQ_OPEN;	980	req->type = EIO_OPEN;
1331	req->sv1 = newSVsv (pathname);	981	req->sv1 = newSVsv (pathname);
1332	req->ptr1 = SvPVbyte_nolen (req->sv1);	982	req->ptr1 = SvPVbyte_nolen (req->sv1);
1333	req->int1 = flags;	983	req->int1 = flags;
1334	req->mode = mode;	984	req->int2 = mode;
1335		985
1336	REQ_SEND;	986	REQ_SEND;
1337	}	987	}
1338		988
1339	void	989	void
1340	aio_close (fh,callback=&PL_sv_undef)	990	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341	SV * fh
1342	SV * callback
1343	PROTOTYPE: $;$
1344	ALIAS:	991	ALIAS:
1345	aio_close = REQ_CLOSE
1346	aio_fsync = REQ_FSYNC	992	aio_fsync = EIO_FSYNC
1347	aio_fdatasync = REQ_FDATASYNC	993	aio_fdatasync = EIO_FDATASYNC
1348	PPCODE:	994	PPCODE:
1349	{	995	{
		996	int fd = s_fileno_croak (fh, 0);
1350	dREQ;	997	dREQ;
1351		998
1352	req->type = ix;	999	req->type = ix;
1353	req->fh = newSVsv (fh);	1000	req->sv1 = newSVsv (fh);
1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1001	req->int1 = fd;
1355		1002
1356	REQ_SEND (req);	1003	REQ_SEND (req);
1357	}	1004	}
1358		1005
1359	void	1006	void
		1007	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1008	PPCODE:
		1009	{
		1010	int fd = s_fileno_croak (fh, 0);
		1011	dREQ;
		1012
		1013	req->type = EIO_SYNC_FILE_RANGE;
		1014	req->sv1 = newSVsv (fh);
		1015	req->int1 = fd;
		1016	req->offs = offset;
		1017	req->size = nbytes;
		1018	req->int2 = flags;
		1019
		1020	REQ_SEND (req);
		1021	}
		1022
		1023	void
		1024	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1025	PPCODE:
		1026	{
		1027	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1028	int fd = s_fileno_croak (fh, 0);
		1029	dREQ;
		1030
		1031	if (close_pipe < 0)
		1032	{
		1033	int pipefd [2];
		1034
		1035	if (pipe (pipefd) < 0
		1036	|| close (pipefd [1]) < 0
		1037	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1038	abort (); /*D*/
		1039
		1040	close_pipe = pipefd [0];
		1041	}
		1042
		1043	req->type = EIO_DUP2;
		1044	req->int1 = close_pipe;
		1045	req->sv2 = newSVsv (fh);
		1046	req->int2 = fd;
		1047
		1048	REQ_SEND (req);
		1049	}
		1050
		1051	void
1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1052	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1361	SV * fh
1362	UV offset
1363	UV length
1364	SV8 * data
1365	UV dataoffset
1366	SV * callback
1367	ALIAS:	1053	ALIAS:
1368	aio_read = REQ_READ	1054	aio_read = EIO_READ
1369	aio_write = REQ_WRITE	1055	aio_write = EIO_WRITE
1370	PROTOTYPE: $$$$$;$
1371	PPCODE:	1056	PPCODE:
1372	{	1057	{
1373	STRLEN svlen;	1058	STRLEN svlen;
		1059	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374	char *svptr = SvPVbyte (data, svlen);	1060	char *svptr = SvPVbyte (data, svlen);
1375		1061	UV len = SvUV (length);
1376	SvUPGRADE (data, SVt_PV);
1377	SvPOK_on (data);
1378		1062
1379	if (dataoffset < 0)	1063	if (dataoffset < 0)
1380	dataoffset += svlen;	1064	dataoffset += svlen;
1381		1065
1382	if (dataoffset < 0 || dataoffset > svlen)	1066	if (dataoffset < 0 || dataoffset > svlen)
1383	croak ("data offset outside of string");	1067	croak ("dataoffset outside of data scalar");
1384		1068
1385	if (ix == REQ_WRITE)	1069	if (ix == EIO_WRITE)
1386	{	1070	{
1387	/* write: check length and adjust. */	1071	/* write: check length and adjust. */
1388	if (length < 0 || length + dataoffset > svlen)	1072	if (!SvOK (length) || len + dataoffset > svlen)
1389	length = svlen - dataoffset;	1073	len = svlen - dataoffset;
1390	}	1074	}
1391	else	1075	else
1392	{	1076	{
1393	/* read: grow scalar as necessary */	1077	/* read: check type and grow scalar as necessary */
		1078	SvUPGRADE (data, SVt_PV);
1394	svptr = SvGROW (data, length + dataoffset + 1);	1079	svptr = SvGROW (data, len + dataoffset + 1);
1395	}	1080	}
1396
1397	if (length < 0)
1398	croak ("length must not be negative");
1399		1081
1400	{	1082	{
1401	dREQ;	1083	dREQ;
1402		1084
1403	req->type = ix;	1085	req->type = ix;
1404	req->fh = newSVsv (fh);	1086	req->sv1 = newSVsv (fh);
1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1087	req->int1 = fd;
1406	: IoOFP (sv_2io (fh)));	1088	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407	req->offs = offset;
1408	req->size = length;	1089	req->size = len;
1409	req->sv1 = SvREFCNT_inc (data);	1090	req->sv2 = SvREFCNT_inc (data);
1410	req->ptr1 = (char *)svptr + dataoffset;	1091	req->ptr2 = (char *)svptr + dataoffset;
1411	req->stroffset = dataoffset;	1092	req->stroffset = dataoffset;
1412		1093
1413	if (!SvREADONLY (data))	1094	if (!SvREADONLY (data))
1414	{	1095	{
1415	SvREADONLY_on (data);	1096	SvREADONLY_on (data);
1416	req->flags |= FLAG_SV1_RO_OFF;	1097	req->flags |= FLAG_SV2_RO_OFF;
1417	}	1098	}
1418		1099
1419	REQ_SEND;	1100	REQ_SEND;
1420	}	1101	}
1421	}	1102	}
1422		1103
1423	void	1104	void
1424	aio_readlink (path,callback=&PL_sv_undef)	1105	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1425	SV8 * path
1426	SV * callback
1427	PROTOTYPE: $$;$
1428	PPCODE:	1106	PPCODE:
1429	{	1107	{
1430	SV *data;	1108	SV *data;
1431	dREQ;	1109	dREQ;
1432		1110
1433	data = newSV (NAME_MAX);
1434	SvPOK_on (data);
1435
1436	req->type = REQ_READLINK;	1111	req->type = EIO_READLINK;
1437	req->fh = newSVsv (path);	1112	req->sv1 = newSVsv (path);
1438	req->ptr2 = SvPVbyte_nolen (req->fh);	1113	req->ptr1 = SvPVbyte_nolen (req->sv1);
1439	req->sv1 = data;
1440	req->ptr1 = SvPVbyte_nolen (data);
1441		1114
1442	REQ_SEND;	1115	REQ_SEND;
1443	}	1116	}
1444		1117
1445	void	1118	void
1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1119	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1447	SV * out_fh
1448	SV * in_fh
1449	UV in_offset
1450	UV length
1451	SV * callback
1452	PROTOTYPE: $$$$;$
1453	PPCODE:	1120	PPCODE:
1454	{	1121	{
		1122	int ifd = s_fileno_croak (in_fh , 0);
		1123	int ofd = s_fileno_croak (out_fh, 1);
1455	dREQ;	1124	dREQ;
1456		1125
1457	req->type = REQ_SENDFILE;	1126	req->type = EIO_SENDFILE;
1458	req->fh = newSVsv (out_fh);	1127	req->sv1 = newSVsv (out_fh);
1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1128	req->int1 = ofd;
1460	req->sv2 = newSVsv (in_fh);	1129	req->sv2 = newSVsv (in_fh);
1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1130	req->int2 = ifd;
1462	req->offs = in_offset;	1131	req->offs = in_offset;
1463	req->size = length;	1132	req->size = length;
1464		1133
1465	REQ_SEND;	1134	REQ_SEND;
1466	}	1135	}
1467		1136
1468	void	1137	void
1469	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1138	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470	SV * fh
1471	UV offset
1472	IV length
1473	SV * callback
1474	PROTOTYPE: $$$;$
1475	PPCODE:	1139	PPCODE:
1476	{	1140	{
		1141	int fd = s_fileno_croak (fh, 0);
1477	dREQ;	1142	dREQ;
1478		1143
1479	req->type = REQ_READAHEAD;	1144	req->type = EIO_READAHEAD;
1480	req->fh = newSVsv (fh);	1145	req->sv1 = newSVsv (fh);
1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1146	req->int1 = fd;
1482	req->offs = offset;	1147	req->offs = offset;
1483	req->size = length;	1148	req->size = length;
1484		1149
1485	REQ_SEND;	1150	REQ_SEND;
1486	}	1151	}
1487		1152
1488	void	1153	void
1489	aio_stat (fh_or_path,callback=&PL_sv_undef)	1154	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490	SV8 * fh_or_path
1491	SV * callback
1492	ALIAS:	1155	ALIAS:
1493	aio_stat = REQ_STAT	1156	aio_stat = EIO_STAT
1494	aio_lstat = REQ_LSTAT	1157	aio_lstat = EIO_LSTAT
		1158	aio_statvfs = EIO_STATVFS
1495	PPCODE:	1159	PPCODE:
1496	{	1160	{
1497	dREQ;	1161	dREQ;
1498		1162
1499	req->ptr2 = malloc (sizeof (Stat_t));	1163	req->sv1 = newSVsv (fh_or_path);
1500	if (!req->ptr2)
1501	{
1502	req_free (req);
1503	croak ("out of memory during aio_stat statdata allocation");
1504	}
1505		1164
1506	req->flags |= FLAG_PTR2_FREE;	1165	if (SvPOK (req->sv1))
1507
1508	if (SvPOK (fh_or_path))
1509	{	1166	{
1510	req->type = ix;	1167	req->type = ix;
1511	req->sv1 = newSVsv (fh_or_path);
1512	req->ptr1 = SvPVbyte_nolen (req->sv1);	1168	req->ptr1 = SvPVbyte_nolen (req->sv1);
1513	}	1169	}
1514	else	1170	else
1515	{	1171	{
1516	req->type = REQ_FSTAT;	1172	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1517	req->fh = newSVsv (fh_or_path);
1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1173	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519	}	1174	}
1520		1175
1521	REQ_SEND;	1176	REQ_SEND;
1522	}	1177	}
1523		1178
		1179	UV
		1180	major (UV dev)
		1181	ALIAS:
		1182	minor = 1
		1183	CODE:
		1184	RETVAL = ix ? major (dev) : minor (dev);
		1185	OUTPUT:
		1186	RETVAL
		1187
		1188	UV
		1189	makedev (UV maj, UV min)
		1190	CODE:
		1191	RETVAL = makedev (maj, min);
		1192	OUTPUT:
		1193	RETVAL
		1194
1524	void	1195	void
		1196	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1197	PPCODE:
		1198	{
		1199	dREQ;
		1200
		1201	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1202	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1203	req->sv1 = newSVsv (fh_or_path);
		1204
		1205	if (SvPOK (req->sv1))
		1206	{
		1207	req->type = EIO_UTIME;
		1208	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1209	}
		1210	else
		1211	{
		1212	req->type = EIO_FUTIME;
		1213	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1214	}
		1215
		1216	REQ_SEND;
		1217	}
		1218
		1219	void
		1220	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1221	PPCODE:
		1222	{
		1223	dREQ;
		1224
		1225	req->sv1 = newSVsv (fh_or_path);
		1226	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1227
		1228	if (SvPOK (req->sv1))
		1229	{
		1230	req->type = EIO_TRUNCATE;
		1231	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1232	}
		1233	else
		1234	{
		1235	req->type = EIO_FTRUNCATE;
		1236	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1237	}
		1238
		1239	REQ_SEND;
		1240	}
		1241
		1242	void
		1243	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1244	ALIAS:
		1245	aio_chmod = EIO_CHMOD
		1246	aio_mkdir = EIO_MKDIR
		1247	PPCODE:
		1248	{
		1249	dREQ;
		1250
		1251	req->int2 = mode;
		1252	req->sv1 = newSVsv (fh_or_path);
		1253
		1254	if (SvPOK (req->sv1))
		1255	{
		1256	req->type = ix;
		1257	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1258	}
		1259	else
		1260	{
		1261	req->type = EIO_FCHMOD;
		1262	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1263	}
		1264
		1265	REQ_SEND;
		1266	}
		1267
		1268	void
		1269	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1270	PPCODE:
		1271	{
		1272	dREQ;
		1273
		1274	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1275	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1276	req->sv1 = newSVsv (fh_or_path);
		1277
		1278	if (SvPOK (req->sv1))
		1279	{
		1280	req->type = EIO_CHOWN;
		1281	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1282	}
		1283	else
		1284	{
		1285	req->type = EIO_FCHOWN;
		1286	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1287	}
		1288
		1289	REQ_SEND;
		1290	}
		1291
		1292	void
		1293	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1294	PPCODE:
		1295	{
		1296	dREQ;
		1297
		1298	req->type = EIO_READDIR;
		1299	req->sv1 = newSVsv (pathname);
		1300	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1301	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1302
		1303	if (flags & EIO_READDIR_DENTS)
		1304	req->int1 |= EIO_READDIR_CUSTOM2;
		1305
		1306	REQ_SEND;
		1307	}
		1308
		1309	void
1525	aio_unlink (pathname,callback=&PL_sv_undef)	1310	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526	SV8 * pathname
1527	SV * callback
1528	ALIAS:	1311	ALIAS:
1529	aio_unlink = REQ_UNLINK	1312	aio_unlink = EIO_UNLINK
1530	aio_rmdir = REQ_RMDIR	1313	aio_rmdir = EIO_RMDIR
1531	aio_readdir = REQ_READDIR	1314	aio_readdir = EIO_READDIR
1532	PPCODE:	1315	PPCODE:
1533	{	1316	{
1534	dREQ;	1317	dREQ;
1535		1318
1536	req->type = ix;	1319	req->type = ix;
…		…
1539		1322
1540	REQ_SEND;	1323	REQ_SEND;
1541	}	1324	}
1542		1325
1543	void	1326	void
1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
1545	SV8 * pathname
1546	UV mode
1547	SV * callback
1548	PPCODE:
1549	{
1550	dREQ;
1551
1552	req->type = REQ_MKDIR;
1553	req->sv1 = newSVsv (pathname);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1555	req->mode = mode;
1556
1557	REQ_SEND;
1558	}
1559
1560	void
1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1327	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1562	SV8 * oldpath
1563	SV8 * newpath
1564	SV * callback
1565	ALIAS:	1328	ALIAS:
1566	aio_link = REQ_LINK	1329	aio_link = EIO_LINK
1567	aio_symlink = REQ_SYMLINK	1330	aio_symlink = EIO_SYMLINK
1568	aio_rename = REQ_RENAME	1331	aio_rename = EIO_RENAME
1569	PPCODE:	1332	PPCODE:
1570	{	1333	{
1571	dREQ;	1334	dREQ;
1572		1335
1573	req->type = ix;	1336	req->type = ix;
1574	req->fh = newSVsv (oldpath);	1337	req->sv1 = newSVsv (oldpath);
1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1576	req->sv1 = newSVsv (newpath);
1577	req->ptr1 = SvPVbyte_nolen (req->sv1);	1338	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1339	req->sv2 = newSVsv (newpath);
		1340	req->ptr2 = SvPVbyte_nolen (req->sv2);
1578		1341
1579	REQ_SEND;	1342	REQ_SEND;
1580	}	1343	}
1581		1344
1582	void	1345	void
1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1346	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	UV mode
1586	UV dev
1587	SV * callback
1588	PPCODE:	1347	PPCODE:
1589	{	1348	{
1590	dREQ;	1349	dREQ;
1591		1350
1592	req->type = REQ_MKNOD;	1351	req->type = EIO_MKNOD;
1593	req->sv1 = newSVsv (pathname);	1352	req->sv1 = newSVsv (pathname);
1594	req->ptr1 = SvPVbyte_nolen (req->sv1);	1353	req->ptr1 = SvPVbyte_nolen (req->sv1);
1595	req->mode = (mode_t)mode;	1354	req->int2 = (mode_t)mode;
1596	req->offs = dev;	1355	req->offs = dev;
1597		1356
1598	REQ_SEND;	1357	REQ_SEND;
1599	}	1358	}
1600		1359
1601	void	1360	void
		1361	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1362	ALIAS:
		1363	aio_mtouch = EIO_MTOUCH
		1364	aio_msync = EIO_MSYNC
		1365	PPCODE:
		1366	{
		1367	STRLEN svlen;
		1368	char *svptr = SvPVbyte (data, svlen);
		1369	UV len = SvUV (length);
		1370
		1371	if (offset < 0)
		1372	offset += svlen;
		1373
		1374	if (offset < 0 || offset > svlen)
		1375	croak ("offset outside of scalar");
		1376
		1377	if (!SvOK (length) || len + offset > svlen)
		1378	len = svlen - offset;
		1379
		1380	{
		1381	dREQ;
		1382
		1383	req->type = ix;
		1384	req->sv2 = SvREFCNT_inc (data);
		1385	req->ptr2 = (char *)svptr + offset;
		1386	req->size = len;
		1387	req->int1 = flags;
		1388
		1389	REQ_SEND;
		1390	}
		1391	}
		1392
		1393	void
		1394	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	STRLEN svlen;
		1398	char *svptr = SvPVbyte (data, svlen);
		1399	UV len = SvUV (length);
		1400
		1401	if (offset < 0)
		1402	offset += svlen;
		1403
		1404	if (offset < 0 || offset > svlen)
		1405	croak ("offset outside of scalar");
		1406
		1407	if (!SvOK (length) || len + offset > svlen)
		1408	len = svlen - offset;
		1409
		1410	{
		1411	dREQ;
		1412
		1413	req->type = EIO_MLOCK;
		1414	req->sv2 = SvREFCNT_inc (data);
		1415	req->ptr2 = (char *)svptr + offset;
		1416	req->size = len;
		1417
		1418	REQ_SEND;
		1419	}
		1420	}
		1421
		1422	void
		1423	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427
		1428	req->type = EIO_MLOCKALL;
		1429	req->int1 = flags;
		1430
		1431	REQ_SEND;
		1432	}
		1433
		1434	void
1602	aio_busy (delay,callback=&PL_sv_undef)	1435	aio_busy (double delay, SV *callback=&PL_sv_undef)
1603	double delay
1604	SV * callback
1605	PPCODE:	1436	PPCODE:
1606	{	1437	{
1607	dREQ;	1438	dREQ;
1608		1439
1609	req->type = REQ_BUSY;	1440	req->type = EIO_BUSY;
1610	req->int1 = delay < 0. ? 0 : delay;	1441	req->nv1 = delay < 0. ? 0. : delay;
1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612		1442
1613	REQ_SEND;	1443	REQ_SEND;
1614	}	1444	}
1615		1445
1616	void	1446	void
1617	aio_group (callback=&PL_sv_undef)	1447	aio_group (SV *callback=&PL_sv_undef)
1618	SV * callback
1619	PROTOTYPE: ;$
1620	PPCODE:	1448	PPCODE:
1621	{	1449	{
1622	dREQ;	1450	dREQ;
1623		1451
1624	req->type = REQ_GROUP;	1452	req->type = EIO_GROUP;
1625		1453
1626	req_send (req);	1454	req_submit (req);
1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1455	XPUSHs (req_sv (req, aio_grp_stash));
1628	}	1456	}
1629		1457
1630	void	1458	void
1631	aio_nop (callback=&PL_sv_undef)	1459	aio_nop (SV *callback=&PL_sv_undef)
1632	SV * callback	1460	ALIAS:
		1461	aio_nop = EIO_NOP
		1462	aio_sync = EIO_SYNC
1633	PPCODE:	1463	PPCODE:
1634	{	1464	{
1635	dREQ;	1465	dREQ;
1636		1466
1637	req->type = REQ_NOP;	1467	req->type = ix;
1638		1468
1639	REQ_SEND;	1469	REQ_SEND;
1640	}	1470	}
1641		1471
1642	int	1472	int
1643	aioreq_pri (int pri = 0)	1473	aioreq_pri (int pri = 0)
1644	PROTOTYPE: ;$
1645	CODE:	1474	CODE:
1646	RETVAL = next_pri - PRI_BIAS;	1475	RETVAL = next_pri;
1647	if (items > 0)	1476	if (items > 0)
1648	{	1477	{
1649	if (pri < PRI_MIN) pri = PRI_MIN;	1478	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650	if (pri > PRI_MAX) pri = PRI_MAX;	1479	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651	next_pri = pri + PRI_BIAS;	1480	next_pri = pri;
1652	}	1481	}
1653	OUTPUT:	1482	OUTPUT:
1654	RETVAL	1483	RETVAL
1655		1484
1656	void	1485	void
1657	aioreq_nice (int nice = 0)	1486	aioreq_nice (int nice = 0)
1658	CODE:	1487	CODE:
1659	nice = next_pri - nice;	1488	nice = next_pri - nice;
1660	if (nice < PRI_MIN) nice = PRI_MIN;	1489	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661	if (nice > PRI_MAX) nice = PRI_MAX;	1490	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662	next_pri = nice + PRI_BIAS;	1491	next_pri = nice;
1663		1492
1664	void	1493	void
1665	flush ()	1494	flush ()
1666	PROTOTYPE:
1667	CODE:	1495	CODE:
1668	while (nreqs)	1496	while (eio_nreqs ())
1669	{	1497	{
1670	poll_wait ();	1498	poll_wait ();
1671	poll_cb ();	1499	poll_cb ();
1672	}	1500	}
1673		1501
1674	int	1502	int
1675	poll()	1503	poll ()
1676	PROTOTYPE:
1677	CODE:	1504	CODE:
1678	poll_wait ();	1505	poll_wait ();
1679	RETVAL = poll_cb ();	1506	RETVAL = poll_cb ();
1680	OUTPUT:	1507	OUTPUT:
1681	RETVAL	1508	RETVAL
1682		1509
1683	int	1510	int
1684	poll_fileno()	1511	poll_fileno ()
1685	PROTOTYPE:
1686	CODE:	1512	CODE:
1687	RETVAL = respipe [0];	1513	RETVAL = s_epipe_fd (&respipe);
1688	OUTPUT:	1514	OUTPUT:
1689	RETVAL	1515	RETVAL
1690		1516
1691	int	1517	int
1692	poll_cb(...)	1518	poll_cb (...)
1693	PROTOTYPE:	1519	PROTOTYPE:
1694	CODE:	1520	CODE:
1695	RETVAL = poll_cb ();	1521	RETVAL = poll_cb ();
1696	OUTPUT:	1522	OUTPUT:
1697	RETVAL	1523	RETVAL
1698		1524
1699	void	1525	void
1700	poll_wait()	1526	poll_wait ()
1701	PROTOTYPE:
1702	CODE:	1527	CODE:
1703	poll_wait ();	1528	poll_wait ();
1704		1529
1705	void
1706	setsig (int signum = SIGIO)
1707	PROTOTYPE: ;$
1708	CODE:
1709	{
1710	if (block_sig_level)
1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713	LOCK (reslock);
1714	main_tid = pthread_self ();
1715	main_sig = signum;
1716	UNLOCK (reslock);
1717
1718	if (main_sig && npending)
1719	pthread_kill (main_tid, main_sig);
1720	}
1721
1722	void
1723	aio_block (SV *cb)
1724	PROTOTYPE: &
1725	PPCODE:
1726	{
1727	int count;
1728
1729	block_sig ();
1730	PUSHMARK (SP);
1731	PUTBACK;
1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733	SPAGAIN;
1734	unblock_sig ();
1735
1736	if (SvTRUE (ERRSV))
1737	croak (0);
1738
1739	XSRETURN (count);
1740	}
1741
1742	int	1530	int
1743	nreqs()	1531	nreqs ()
1744	PROTOTYPE:
1745	CODE:	1532	CODE:
1746	RETVAL = nreqs;	1533	RETVAL = eio_nreqs ();
1747	OUTPUT:	1534	OUTPUT:
1748	RETVAL	1535	RETVAL
1749		1536
1750	int	1537	int
1751	nready()	1538	nready ()
1752	PROTOTYPE:
1753	CODE:	1539	CODE:
1754	RETVAL = get_nready ();	1540	RETVAL = eio_nready ();
1755	OUTPUT:	1541	OUTPUT:
1756	RETVAL	1542	RETVAL
1757		1543
1758	int	1544	int
1759	npending()	1545	npending ()
1760	PROTOTYPE:
1761	CODE:	1546	CODE:
1762	RETVAL = get_npending ();	1547	RETVAL = eio_npending ();
1763	OUTPUT:	1548	OUTPUT:
1764	RETVAL	1549	RETVAL
1765		1550
1766	int	1551	int
1767	nthreads()	1552	nthreads ()
1768	PROTOTYPE:
1769	CODE:	1553	CODE:
1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1554	RETVAL = eio_nthreads ();
1771	RETVAL = started;
1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773	OUTPUT:	1555	OUTPUT:
1774	RETVAL	1556	RETVAL
1775		1557
		1558	int
		1559	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1560	CODE:
		1561	RETVAL = posix_fadvise (fh, offset, length, advice);
		1562	OUTPUT:
		1563	RETVAL
		1564
		1565	ssize_t
		1566	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1567	CODE:
		1568	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1569	OUTPUT:
		1570	RETVAL
		1571
		1572	void
		1573	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1574	PPCODE:
		1575	sv_unmagic (scalar, MMAP_MAGIC);
		1576	{
		1577	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1578	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1579	if (addr == (void *)-1)
		1580	XSRETURN_NO;
		1581
		1582	sv_force_normal (scalar);
		1583
		1584	/* we store the length in mg_obj, as namlen is I32 :/ */
		1585	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1586	->mg_obj = (SV *)length;
		1587
		1588	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1589
		1590	if (!(prot & PROT_WRITE))
		1591	SvREADONLY_on (scalar);
		1592
		1593	if (SvLEN (scalar))
		1594	Safefree (SvPVX (scalar));
		1595
		1596	SvPVX (scalar) = (char *)addr;
		1597	SvCUR_set (scalar, length);
		1598	SvLEN_set (scalar, 0);
		1599	SvPOK_only (scalar);
		1600
		1601	XSRETURN_YES;
		1602	}
		1603
		1604	void
		1605	munmap (SV *scalar)
		1606	CODE:
		1607	sv_unmagic (scalar, MMAP_MAGIC);
		1608
		1609	int
		1610	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1611	ALIAS:
		1612	mprotect = 1
		1613	CODE:
		1614	{
		1615	STRLEN svlen;
		1616	void *addr = SvPVbyte (scalar, svlen);
		1617	size_t len = SvUV (length);
		1618
		1619	if (offset < 0)
		1620	offset += svlen;
		1621
		1622	if (offset < 0 || offset > svlen)
		1623	croak ("offset outside of scalar");
		1624
		1625	if (!SvOK (length) || len + offset > svlen)
		1626	len = svlen - offset;
		1627
		1628	addr = (void *)(((intptr_t)addr) + offset);
		1629	eio_page_align (&addr, &len);
		1630
		1631	switch (ix)
		1632	{
		1633	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1634	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1635	}
		1636	}
		1637	OUTPUT:
		1638	RETVAL
		1639
		1640	int
		1641	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1642	CODE:
		1643	{
		1644	STRLEN svlen;
		1645	void *addr = SvPVbyte (scalar, svlen);
		1646	size_t len = SvUV (length);
		1647
		1648	if (offset < 0)
		1649	offset += svlen;
		1650
		1651	if (offset < 0 || offset > svlen)
		1652	croak ("offset outside of scalar");
		1653
		1654	if (!SvOK (length) || len + offset > svlen)
		1655	len = svlen - offset;
		1656
		1657	addr = (void *)(((intptr_t)addr) + offset);
		1658	eio_page_align (&addr, &len);
		1659	#if _POSIX_MEMLOCK_RANGE
		1660	RETVAL = munlock (addr, len);
		1661	#else
		1662	RETVAL = ((errno = ENOSYS), -1);
		1663	#endif
		1664	}
		1665	OUTPUT:
		1666	RETVAL
		1667
		1668	int
		1669	munlockall ()
		1670	CODE:
		1671	#if _POSIX_MEMLOCK
		1672	munlockall ();
		1673	#else
		1674	RETVAL = -1;
		1675	errno = ENOSYS;
		1676	#endif
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	void _on_next_submit (SV *cb)
		1681	CODE:
		1682	SvREFCNT_dec (on_next_submit);
		1683	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1684
1776	PROTOTYPES: DISABLE	1685	PROTOTYPES: DISABLE
1777		1686
1778	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1687	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779		1688
1780	void	1689	void
1781	cancel (aio_req_ornot req)	1690	cancel (aio_req_ornot req)
1782	CODE:	1691	CODE:
1783	req_cancel (req);	1692	eio_cancel (req);
1784		1693
1785	void	1694	void
1786	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1695	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787	CODE:	1696	PPCODE:
		1697	{
		1698	if (GIMME_V != G_VOID)
		1699	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1700
		1701	if (items > 1)
		1702	{
		1703	SV *cb_cv =get_cb (callback);
		1704
1788	SvREFCNT_dec (req->callback);	1705	SvREFCNT_dec (req->callback);
1789	req->callback = newSVsv (callback);	1706	req->callback = SvREFCNT_inc (cb_cv);
		1707	}
		1708	}
1790		1709
1791	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1710	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792		1711
1793	void	1712	void
1794	add (aio_req grp, ...)	1713	add (aio_req grp, ...)
1795	PPCODE:	1714	PPCODE:
1796	{	1715	{
1797	int i;	1716	int i;
1798	aio_req req;
1799
1800	if (main_sig && !block_sig_level)
1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802		1717
1803	if (grp->int1 == 2)	1718	if (grp->int1 == 2)
1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1719	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805		1720
1806	for (i = 1; i < items; ++i )	1721	for (i = 1; i < items; ++i )
1807	{	1722	{
		1723	aio_req req;
		1724
1808	if (GIMME_V != G_VOID)	1725	if (GIMME_V != G_VOID)
1809	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1726	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810		1727
1811	req = SvAIO_REQ (ST (i));	1728	req = SvAIO_REQ (ST (i));
1812		1729
1813	if (req)	1730	if (req)
1814	{	1731	eio_grp_add (grp, req);
1815	++grp->size;
1816	req->grp = grp;
1817
1818	req->grp_prev = 0;
1819	req->grp_next = grp->grp_first;
1820
1821	if (grp->grp_first)
1822	grp->grp_first->grp_prev = req;
1823
1824	grp->grp_first = req;
1825	}
1826	}	1732	}
1827	}	1733	}
1828		1734
1829	void	1735	void
1830	cancel_subs (aio_req_ornot req)	1736	cancel_subs (aio_req_ornot req)
…		…
1839	AV *av;	1745	AV *av;
1840		1746
1841	grp->errorno = errno;	1747	grp->errorno = errno;
1842		1748
1843	av = newAV ();	1749	av = newAV ();
		1750	av_extend (av, items - 1);
1844		1751
1845	for (i = 1; i < items; ++i )	1752	for (i = 1; i < items; ++i )
1846	av_push (av, newSVsv (ST (i)));	1753	av_push (av, newSVsv (ST (i)));
1847		1754
1848	SvREFCNT_dec (grp->sv1);	1755	SvREFCNT_dec (grp->sv1);
…		…
1855	grp->errorno = errorno;	1762	grp->errorno = errorno;
1856		1763
1857	void	1764	void
1858	limit (aio_req grp, int limit)	1765	limit (aio_req grp, int limit)
1859	CODE:	1766	CODE:
1860	grp->int2 = limit;	1767	eio_grp_limit (grp, limit);
1861	aio_grp_feed (grp);
1862		1768
1863	void	1769	void
1864	feed (aio_req grp, SV *callback=&PL_sv_undef)	1770	feed (aio_req grp, SV *callback=&PL_sv_undef)
1865	CODE:	1771	CODE:
1866	{	1772	{
1867	SvREFCNT_dec (grp->sv2);	1773	SvREFCNT_dec (grp->sv2);
1868	grp->sv2 = newSVsv (callback);	1774	grp->sv2 = newSVsv (callback);
		1775	grp->feed = aio_grp_feed;
1869		1776
1870	if (grp->int2 <= 0)	1777	if (grp->int2 <= 0)
1871	grp->int2 = 2;	1778	grp->int2 = 2;
1872		1779
1873	aio_grp_feed (grp);	1780	eio_grp_limit (grp, grp->int2);
1874	}	1781	}
1875		1782

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