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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.114 by root, Sat Apr 26 12:00:23 2008 UTC vs.
Revision 1.188 by root, Sun Jul 17 04:20:04 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
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
14	#include <limits.h>	16	#include <limits.h>
15	#include <fcntl.h>	17	#include <fcntl.h>
16	#include <sched.h>	18	#include <sched.h>
17		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
18	#ifdef _WIN32	33	#ifdef _WIN32
19		34
20	# define SIGIO 0	35	#define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	36	#undef malloc
23	#undef free	37	#undef free
24		38
25	// perl overrides all those nice win32 functions	39	// perl overrides all those nice libc functions
26	# undef open	40	#undef open
27	# undef read	41	#undef read
28	# undef write	42	#undef write
29	# undef send	43	#undef send
30	# undef recv	44	#undef recv
31	# undef stat	45	#undef stat
		46	#undef lstat
32	# undef fstat	47	#undef fstat
33	# define lstat stat
34	# undef truncate	48	#undef truncate
35	# undef ftruncate	49	#undef ftruncate
36	# undef open	50	#undef open
		51	#undef link
37	# undef close	52	#undef close
38	# undef unlink	53	#undef unlink
		54	#undef mkdir
39	# undef rmdir	55	#undef rmdir
40	# undef rename	56	#undef rename
41	# undef lseek	57	#undef lseek
42		58	#undef opendir
43	# define chown(a,b,c) (errno = ENOSYS, -1)	59	#undef readdir
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	60	#undef closedir
45	# define fchmod(a,b) (errno = ENOSYS, -1)	61	#undef chmod
46	# define symlink(a,b) (errno = ENOSYS, -1)	62	#undef fchmod
47	# define readlink(a,b,c) (errno = ENOSYS, -1)	63	#undef dup
48	# define mknod(a,b,c) (errno = ENOSYS, -1)	64	#undef dup2
49	# define truncate(a,b) (errno = ENOSYS, -1)	65	#undef abort
50	# define ftruncate(fd,o) chsize ((fd), (o))	66	#undef pipe
51	# define fsync(fd) _commit (fd)
52	# define opendir(fd) (errno = ENOSYS, 0)
53	# define readdir(fd) (errno = ENOSYS, -1)
54	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)
56		67
57	#else	68	#else
58		69
59	# include "autoconf/config.h"
60	# include <sys/time.h>	70	#include <sys/time.h>
61	# include <sys/select.h>	71	#include <sys/select.h>
62	# include <unistd.h>	72	#include <unistd.h>
63	# include <utime.h>	73	#include <utime.h>
64	# include <signal.h>	74	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		75
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	76	#endif
82	#endif
83		77
84	/* number of seconds after which idle threads exit */	78	#define EIO_STRUCT_STAT Stat_t
85	#define IDLE_TIMEOUT 10
86
87	/* used for struct dirent, AIX doesn't provide it */
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		79
95	/* use NV for 32 bit perls as it allows larger offsets */	80	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	81	#if IVSIZE >= 8
		82	# define VAL64 IV
97	# define SvVAL64 SvIV	83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
98	#else	85	#else
		86	# define VAL64 NV
99	# define SvVAL64 SvNV	87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
100	#endif	89	#endif
101		90
102	static HV *stash;	91	/*****************************************************************************/
103		92
104	#define dBUF \	93	#if __GNUC__ >= 3
105	char *aio_buf; \	94	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	95	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	96	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	97	#endif
109	if (!aio_buf) \	98
110	return -1;	99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
111		103
112	typedef SV SV8; /* byte-sv, used for argument-checking */	104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	/* Linux/others */
		129	#ifndef O_ASYNC
		130	# define O_ASYNC 0
		131	#endif
		132	#ifndef O_DIRECT
		133	# define O_DIRECT 0
		134	#endif
		135	#ifndef O_NOATIME
		136	# define O_NOATIME 0
		137	#endif
		138
		139	/* POSIX */
		140	#ifndef O_CLOEXEC
		141	# define O_CLOEXEC 0
		142	#endif
		143	#ifndef O_NOFOLLOW
		144	# define O_NOFOLLOW 0
		145	#endif
		146	#ifndef O_NOCTTY
		147	# define O_NOCTTY 0
		148	#endif
		149	#ifndef O_NONBLOCK
		150	# define O_NONBLOCK 0
		151	#endif
		152	#ifndef O_EXEC
		153	# define O_EXEC 0
		154	#endif
		155	#ifndef O_SEARCH
		156	# define O_SEARCH 0
		157	#endif
		158	#ifndef O_DIRECTORY
		159	# define O_DIRECTORY 0
		160	#endif
		161	#ifndef O_DSYNC
		162	# define O_DSYNC 0
		163	#endif
		164	#ifndef O_RSYNC
		165	# define O_RSYNC 0
		166	#endif
		167	#ifndef O_SYNC
		168	# define O_SYNC 0
		169	#endif
		170	#ifndef O_TTY_INIT
		171	# define O_TTY_INIT 0
		172	#endif
		173
		174	#ifndef POSIX_FADV_NORMAL
		175	# define POSIX_FADV_NORMAL 0
		176	#endif
		177	#ifndef POSIX_FADV_SEQUENTIAL
		178	# define POSIX_FADV_SEQUENTIAL 0
		179	#endif
		180	#ifndef POSIX_FADV_RANDOM
		181	# define POSIX_FADV_RANDOM 0
		182	#endif
		183	#ifndef POSIX_FADV_NOREUSE
		184	# define POSIX_FADV_NOREUSE 0
		185	#endif
		186	#ifndef POSIX_FADV_WILLNEED
		187	# define POSIX_FADV_WILLNEED 0
		188	#endif
		189	#ifndef POSIX_FADV_DONTNEED
		190	# define POSIX_FADV_DONTNEED 0
		191	#endif
		192
		193	#if !HAVE_POSIX_FADVISE
		194	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		195	#endif
		196
		197	#ifndef POSIX_MADV_NORMAL
		198	# define POSIX_MADV_NORMAL 0
		199	#endif
		200	#ifndef POSIX_MADV_SEQUENTIAL
		201	# define POSIX_MADV_SEQUENTIAL 0
		202	#endif
		203	#ifndef POSIX_MADV_RANDOM
		204	# define POSIX_MADV_RANDOM 0
		205	#endif
		206	#ifndef POSIX_MADV_WILLNEED
		207	# define POSIX_MADV_WILLNEED 0
		208	#endif
		209	#ifndef POSIX_MADV_DONTNEED
		210	# define POSIX_MADV_DONTNEED 0
		211	#endif
		212
		213	#if !HAVE_POSIX_MADVISE
		214	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		215	#endif
		216
		217	#ifndef PROT_NONE
		218	# define PROT_NONE 0
		219	#endif
		220	#ifndef PROT_READ
		221	# define PROT_READ 0
		222	#endif
		223	#ifndef PROT_WRITE
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_EXEC
		227	# define PROT_EXEC 0
		228	#endif
		229
		230	#ifndef ST_RDONLY
		231	# define ST_RDONLY 0
		232	#endif
		233	#ifndef ST_NOSUID
		234	# define ST_NOSUID 0
		235	#endif
		236	#ifndef ST_NODEV
		237	# define ST_NODEV 0
		238	#endif
		239	#ifndef ST_NOEXEC
		240	# define ST_NOEXEC 0
		241	#endif
		242	#ifndef ST_SYNCHRONOUS
		243	# define ST_SYNCHRONOUS 0
		244	#endif
		245	#ifndef ST_MANDLOCK
		246	# define ST_MANDLOCK 0
		247	#endif
		248	#ifndef ST_WRITE
		249	# define ST_WRITE 0
		250	#endif
		251	#ifndef ST_APPEND
		252	# define ST_APPEND 0
		253	#endif
		254	#ifndef ST_IMMUTABLE
		255	# define ST_IMMUTABLE 0
		256	#endif
		257	#ifndef ST_NOATIME
		258	# define ST_NOATIME 0
		259	#endif
		260	#ifndef ST_NODIRATIME
		261	# define ST_NODIRATIME 0
		262	#endif
		263	#ifndef ST_RELATIME
		264	# define ST_RELATIME 0
		265	#endif
		266
		267	#ifndef S_IFIFO
		268	# define S_IFIFO 0
		269	#endif
		270	#ifndef S_IFCHR
		271	# define S_IFCHR 0
		272	#endif
		273	#ifndef S_IFBLK
		274	# define S_IFBLK 0
		275	#endif
		276	#ifndef S_IFLNK
		277	# define S_IFLNK 0
		278	#endif
		279	#ifndef S_IFREG
		280	# define S_IFREG 0
		281	#endif
		282	#ifndef S_IFDIR
		283	# define S_IFDIR 0
		284	#endif
		285	#ifndef S_IFWHT
		286	# define S_IFWHT 0
		287	#endif
		288	#ifndef S_IFSOCK
		289	# define S_IFSOCK 0
		290	#endif
		291
		292	#ifndef MAP_ANONYMOUS
		293	# ifdef MAP_ANON
		294	# define MAP_ANONYMOUS MAP_ANON
		295	# else
		296	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		297	# endif
		298	#endif
		299	#ifndef MAP_HUGETLB
		300	# define MAP_HUGETLB 0
		301	#endif
		302	#ifndef MAP_LOCKED
		303	# define MAP_LOCKED 0
		304	#endif
		305	#ifndef MAP_NORESERVE
		306	# define MAP_NORESERVE 0
		307	#endif
		308	#ifndef MAP_POPULATE
		309	# define MAP_POPULATE 0
		310	#endif
		311	#ifndef MAP_NONBLOCK
		312	# define MAP_NONBLOCK 0
		313	#endif
		314
		315	#ifndef makedev
		316	# define makedev(maj,min) (((maj) << 8) | (min))
		317	#endif
		318	#ifndef major
		319	# define major(dev) ((dev) >> 8)
		320	#endif
		321	#ifndef minor
		322	# define minor(dev) ((dev) & 0xff)
		323	#endif
		324
		325	#ifndef PAGESIZE
		326	# define PAGESIZE sysconf (_SC_PAGESIZE)
		327	#endif
113		328
114	enum {	329	enum {
115	REQ_QUIT,	330	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};	331	};
131		332
132	#define AIO_REQ_KLASS "IO::AIO::REQ"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134
135	typedef struct aio_cb
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;
140	SV *sv1, *sv2;
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;
148	int type;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152
153	unsigned char flags;
154	unsigned char pri;
155
156	SV *self; /* the perl counterpart of this request, if any */
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
158	} aio_cb;
159
160	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};
165
166	typedef aio_cb *aio_req;	333	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	334	typedef eio_req *aio_req_ornot;
168		335
169	enum {	336	static SV *on_next_submit;
170	PRI_MIN = -4,	337	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	338	static int max_outstanding;
172		339
173	DEFAULT_PRI = 0,	340	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		341
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig (void)
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig (void)
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready (void)
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending (void)
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads (void)
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb (void);
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	342	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	343	static void req_cancel (aio_req req);
378		344
		345	static void want_poll (void)
		346	{
		347	/* write a dummy byte to the pipe so fh becomes ready */
		348	s_epipe_signal (&respipe);
		349	}
		350
		351	static void done_poll (void)
		352	{
		353	/* read any signals sent by the worker threads */
		354	s_epipe_drain (&respipe);
		355	}
		356
379	/* must be called at most once */	357	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	358	static SV *req_sv (aio_req req, HV *stash)
381	{	359	{
382	if (!req->self)	360	if (!req->self)
383	{	361	{
384	req->self = (SV *)newHV ();	362	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	363	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	364	}
387		365
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	366	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	367	}
390		368
391	static aio_req SvAIO_REQ (SV *sv)	369	static aio_req SvAIO_REQ (SV *sv)
392	{	370	{
393	MAGIC *mg;	371	MAGIC *mg;
394		372
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	373	if (!SvROK (sv)
		374	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		375	&& SvSTASH (SvRV (sv)) != aio_req_stash
		376	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	377	croak ("object of class IO::AIO::REQ expected");
397		378
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	379	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		380
400	return mg ? (aio_req)mg->mg_ptr : 0;	381	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	382	}
402		383
403	static void aio_grp_feed (aio_req grp)	384	static void aio_grp_feed (aio_req grp)
404	{	385	{
405	block_sig ();	386	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	387	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	388	dSP;
414		389
415	ENTER;	390	ENTER;
416	SAVETMPS;	391	SAVETMPS;
417	PUSHMARK (SP);	392	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	393	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	394	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	395	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	396	SPAGAIN;
422	FREETMPS;	397	FREETMPS;
423	LEAVE;	398	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	399	}
434
435	unblock_sig ();
436	}	400	}
437		401
438	static void aio_grp_dec (aio_req grp)	402	static void req_submit (eio_req *req)
439	{	403	{
440	--grp->size;	404	eio_submit (req);
441		405
442	/* call feeder, if applicable */	406	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	407	{
448	block_sig ();	408	dSP;
		409	SV *cb = sv_2mortal (on_next_submit);
449		410
450	if (!req_invoke (grp))	411	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		412
457	req_destroy (grp);	413	PUSHMARK (SP);
458	unblock_sig ();	414	PUTBACK;
		415	call_sv (cb, G_DISCARD | G_EVAL);
459	}	416	}
460	}	417	}
461		418
462	static int req_invoke (aio_req req)	419	static int req_invoke (eio_req *req)
463	{	420	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	421	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	422	SvREADONLY_off (req->sv2);
468		423
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	424	if (!EIO_CANCELLED (req) && req->callback)
470	{	425	{
		426	dSP;
		427	static SV *sv_result_cache; /* caches the result integer SV */
		428	SV *sv_result;
		429
471	ENTER;	430	ENTER;
472	SAVETMPS;	431	SAVETMPS;
473	PUSHMARK (SP);	432	PUSHMARK (SP);
474	EXTEND (SP, 1);	433	EXTEND (SP, 1);
475		434
		435	/* do not recreate the result IV from scratch each time */
		436	if (expect_true (sv_result_cache))
		437	{
		438	sv_result = sv_result_cache; sv_result_cache = 0;
		439	SvIV_set (sv_result, req->result);
		440	SvIOK_only (sv_result);
		441	}
		442	else
		443	{
		444	sv_result = newSViv (req->result);
		445	SvREADONLY_on (sv_result);
		446	}
		447
476	switch (req->type)	448	switch (req->type)
477	{	449	{
478	case REQ_READDIR:	450	case EIO_READDIR:
479	{	451	{
480	SV *rv = &PL_sv_undef;	452	SV *rv = &PL_sv_undef;
481		453
482	if (req->result >= 0)	454	if (req->result >= 0)
483	{	455	{
484	int i;	456	int i;
485	char *buf = req->ptr2;	457	char *names = (char *)req->ptr2;
		458	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	459	AV *av = newAV ();
487		460
488	av_extend (av, req->result - 1);	461	av_extend (av, req->result - 1);
489		462
490	for (i = 0; i < req->result; ++i)	463	for (i = 0; i < req->result; ++i)
491	{	464	{
492	SV *sv = newSVpv (buf, 0);	465	if (req->int1 & EIO_READDIR_DENTS)
		466	{
		467	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		468
		469	if (req->int1 & EIO_READDIR_CUSTOM2)
		470	{
		471	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		472	AV *avent = newAV ();
		473
		474	av_extend (avent, 2);
		475
		476	if (!sv_type [ent->type])
		477	{
		478	sv_type [ent->type] = newSViv (ent->type);
		479	SvREADONLY_on (sv_type [ent->type]);
		480	}
		481
		482	av_store (avent, 0, namesv);
		483	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		484	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		485
		486	av_store (av, i, newRV_noinc ((SV *)avent));
		487	}
		488	else
494	av_store (av, i, sv);	489	av_store (av, i, namesv);
		490
		491	++ent;
		492	}
		493	else
		494	{
		495	SV *name = newSVpv (names, 0);
		496	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	497	names += SvCUR (name) + 1;
		498	}
496	}	499	}
497		500
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	501	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	502	}
500		503
501	PUSHs (rv);	504	PUSHs (rv);
		505
		506	if (req->int1 & EIO_READDIR_CUSTOM1)
		507	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	508	}
503	break;	509	break;
504		510
505	case REQ_OPEN:	511	case EIO_OPEN:
506	{	512	{
507	/* convert fd to fh */	513	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	514	SV *fh = &PL_sv_undef;
509		515
510	if (req->result >= 0)	516	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	518	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	519	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	520	char sym [64];
515	int symlen;	521	int symlen;
516		522
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	523	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	524	gv_init (gv, aio_stash, sym, symlen, 0);
519		525
520	symlen = snprintf (	526	symlen = snprintf (
521	sym,	527	sym,
522	sizeof (sym),	528	sizeof (sym),
523	"%s&=%d",	529	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	530	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	531	(int)req->result
526	);	532	);
527		533
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	534	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	535	fh = (SV *)gv;
530	}	536	}
531		537
532	PUSHs (fh);	538	PUSHs (fh);
533	}	539	}
534	break;	540	break;
535		541
		542	case EIO_STATVFS:
		543	case EIO_FSTATVFS:
		544	{
		545	SV *rv = &PL_sv_undef;
		546
		547	#ifndef _WIN32
		548	if (req->result >= 0)
		549	{
		550	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		551	HV *hv = newHV ();
		552
		553	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		554
		555	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		556	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		557	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		558	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		559	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		560	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		561	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		562	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		563	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		564	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		565	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		566	}
		567	#endif
		568
		569	PUSHs (rv);
		570	}
		571
		572	break;
		573
536	case REQ_GROUP:	574	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	575	req->int1 = 2; /* mark group as finished */
538		576
539	if (req->sv1)	577	if (req->sv1)
540	{	578	{
541	int i;	579	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	583	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	584	PUSHs (*av_fetch (av, i, 0));
547	}	585	}
548	break;	586	break;
549		587
550	case REQ_NOP:	588	case EIO_NOP:
551	case REQ_BUSY:	589	case EIO_BUSY:
552	break;	590	break;
553		591
554	case REQ_READLINK:	592	case EIO_READLINK:
		593	case EIO_REALPATH:
555	if (req->result > 0)	594	if (req->result > 0)
556	{	595	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
557	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);
560	}
561	break;	596	break;
562		597
563	case REQ_STAT:	598	case EIO_STAT:
564	case REQ_LSTAT:	599	case EIO_LSTAT:
565	case REQ_FSTAT:	600	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	601	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	602	PL_laststatval = req->result;
		603	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
568	PL_statcache = *(Stat_t *)(req->ptr2);	604	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	605	PUSHs (sv_result);
570	break;	606	break;
571		607
572	case REQ_READ:	608	case EIO_READ:
		609	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	610	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	611	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	612	SvPOK_only (req->sv2);
		613	SvSETMAGIC (req->sv2);
		614	PUSHs (sv_result);
		615	}
576	break;	616	break;
577		617
		618	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		619	if (req->result > 0)
		620	SvIV_set (sv_result, 0);
		621	/* FALLTHROUGH */
		622
578	default:	623	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	624	PUSHs (sv_result);
580	break;	625	break;
581	}	626	}
582		627
583	errno = req->errorno;	628	errno = req->errorno;
584		629
585	PUTBACK;	630	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	631	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	632	SPAGAIN;
588		633
		634	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		635	SvREFCNT_dec (sv_result);
		636	else
		637	sv_result_cache = sv_result;
		638
589	FREETMPS;	639	FREETMPS;
590	LEAVE;	640	LEAVE;
591		641
592	PUTBACK;	642	PUTBACK;
593	}	643	}
594		644
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	645	return !!SvTRUE (ERRSV);
610	}	646	}
611		647
612	static void req_destroy (aio_req req)	648	static void req_destroy (aio_req req)
613	{	649	{
614	if (req->self)	650	if (req->self)
…		…
619		655
620	SvREFCNT_dec (req->sv1);	656	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	657	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	658	SvREFCNT_dec (req->callback);
623		659
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	660	Safefree (req);
628	}	661	}
629		662
630	static void req_cancel_subs (aio_req grp)	663	static void req_cancel_subs (aio_req grp)
631	{	664	{
632	aio_req sub;
633
634	if (grp->type != REQ_GROUP)	665	if (grp->type != EIO_GROUP)
635	return;	666	return;
636		667
637	SvREFCNT_dec (grp->sv2);	668	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	669	grp->sv2 = 0;
639		670
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	671	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	672	}
643		673
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}
650
651	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else
654	# define TO_SOCKET(x) (x)
655	#endif
656
657	static void
658	create_respipe (void)	674	static void create_respipe (void)
659	{	675	{
660	int old_readfd = respipe [0];
661
662	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));
664
665	#ifdef _WIN32
666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667	#else
668	if (pipe (respipe))	676	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	677	croak ("IO::AIO: unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}
694
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread (void)
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}	678	}
789		679
790	static void poll_wait (void)	680	static void poll_wait (void)
791	{	681	{
792	fd_set rfd;
793
794	while (nreqs)	682	while (eio_nreqs ())
795	{	683	{
796	int size;	684	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	685
		686	X_LOCK (reslock);
798	size = res_queue.size;	687	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	688	X_UNLOCK (reslock);
800		689
801	if (size)	690	if (size)
802	return;	691	return;
803		692
804	maybe_start_thread ();	693	etp_maybe_start_thread ();
805		694
806	FD_ZERO (&rfd);	695	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	696	}
811	}	697	}
812		698
813	static int poll_cb (void)	699	static int poll_cb (void)
814	{	700	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	701	for (;;)
828	{	702	{
829	for (;;)	703	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		704
833	X_LOCK (reslock);	705	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	706	croak (0);
868	}
869		707
870	count++;	708	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	709	return res;
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889		710
890	poll_wait ();	711	poll_wait ();
891
892	++maxreqs;
893	}	712	}
		713	}
894		714
895	unblock_sig ();	715	static void atfork_child (void)
896	return count;	716	{
		717	create_respipe ();
897	}	718	}
898		719
899	/*****************************************************************************/	720	/*****************************************************************************/
900	/* work around various missing functions */
901		721
902	#if !HAVE_PREADWRITE	722	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	723	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	724	# define munmap(addr,length) (errno = ENOSYS, -1)
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif	725	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		726
1080	if (res < 0	727	#if !_POSIX_MEMORY_PROTECTION
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	728	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1082	#if __solaris	729	# define PROT_NONE 0
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	730	# define PROT_WRITE 0
		731	# define MAP_PRIVATE 0
		732	# define MAP_SHARED 0
		733	# define MAP_FIXED 0
1084	#endif	734	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090		735
1091	res = 0;	736	#define MMAP_MAGIC PERL_MAGIC_ext
1092		737
1093	while (count)	738	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
1094	{	739	{
1095	ssize_t cnt;	740	int old_errno = errno;
1096		741	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	742	errno = old_errno;
1098		743
1099	if (cnt <= 0)	744	mg->mg_obj = 0; /* just in case */
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104		745
1105	cnt = write (ofd, aio_buf, cnt);	746	SvREADONLY_off (sv);
1106		747
1107	if (cnt <= 0)	748	if (SvPVX (sv) != mg->mg_ptr)
1108	{	749	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112		750
1113	offset += cnt;	751	SvCUR_set (sv, 0);
1114	res += cnt;	752	SvPVX (sv) = 0;
1115	count -= cnt;	753	SvOK_off (sv);
1116	}
1117	}
1118		754
1119	return res;	755	return 0;
1120	}	756	}
1121		757
1122	/* read a full directory */	758	static MGVTBL mmap_vtbl = {
1123	static void scandir_ (aio_req req, worker *self)	759	0, 0, 0, 0, mmap_free
1124	{	760	};
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182
1183	static int
1184	aio_close (int fd)
1185	{
1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1187
1188	X_LOCK (wrklock);
1189
1190	if (close_pipe < 0)
1191	{
1192	int pipefd [2];
1193
1194	if (pipe (pipefd) < 0
1195	|| close (pipefd [1]) < 0
1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
1197	{
1198	X_UNLOCK (wrklock);
1199	return -1;
1200	}
1201
1202	close_pipe = pipefd [0];
1203	}
1204
1205	X_UNLOCK (wrklock);
1206
1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
1208	}
1209		761
1210	/*****************************************************************************/	762	/*****************************************************************************/
1211		763
1212	X_THREAD_PROC (aio_proc)	764	static SV * get_cb (SV *cb_sv)
1213	{	765	{
1214	aio_req req;	766	SvGETMAGIC (cb_sv);
1215	struct timespec ts;	767	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1216	worker *self = (worker *)thr_arg;
1217
1218	/* try to distribute timeouts somewhat randomly */
1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1220
1221	for (;;)
1222	{
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224
1225	X_LOCK (reqlock);
1226
1227	for (;;)
1228	{
1229	self->req = req = reqq_shift (&req_queue);
1230
1231	if (req)
1232	break;
1233
1234	++idle;
1235
1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1237	== ETIMEDOUT)
1238	{
1239	if (idle > max_idle)
1240	{
1241	--idle;
1242	X_UNLOCK (reqlock);
1243	X_LOCK (wrklock);
1244	--started;
1245	X_UNLOCK (wrklock);
1246	goto quit;
1247	}
1248
1249	/* we are allowed to idle, so do so without any timeout */
1250	X_COND_WAIT (reqwait, reqlock);
1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1252	}
1253
1254	--idle;
1255	}
1256
1257	--nready;
1258
1259	X_UNLOCK (reqlock);
1260
1261	errno = 0; /* strictly unnecessary */
1262
1263	if (!(req->flags & FLAG_CANCELLED))
1264	switch (req->type)
1265	{
1266	case REQ_READ: req->result = req->offs >= 0
1267	? pread (req->int1, req->ptr1, req->size, req->offs)
1268	: read (req->int1, req->ptr1, req->size); break;
1269	case REQ_WRITE: req->result = req->offs >= 0
1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1271	: write (req->int1, req->ptr1, req->size); break;
1272
1273	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1275
1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1279
1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1286
1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1297
1298	case REQ_SYNC: req->result = 0; sync (); break;
1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1301
1302	case REQ_READDIR: scandir_ (req, self); break;
1303
1304	case REQ_BUSY:
1305	#ifdef _WIN32
1306	Sleep (req->nv1 * 1000.);
1307	#else
1308	{
1309	struct timeval tv;
1310
1311	tv.tv_sec = req->nv1;
1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1313
1314	req->result = select (0, 0, 0, 0, &tv);
1315	}
1316	#endif
1317	break;
1318
1319	case REQ_UTIME:
1320	case REQ_FUTIME:
1321	{
1322	struct timeval tv[2];
1323	struct timeval *times;
1324
1325	if (req->nv1 != -1. || req->nv2 != -1.)
1326	{
1327	tv[0].tv_sec = req->nv1;
1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1329	tv[1].tv_sec = req->nv2;
1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1331
1332	times = tv;
1333	}
1334	else
1335	times = 0;
1336
1337
1338	req->result = req->type == REQ_FUTIME
1339	? futimes (req->int1, times)
1340	: utimes (req->ptr1, times);
1341	}
1342
1343	case REQ_GROUP:
1344	case REQ_NOP:
1345	break;
1346
1347	case REQ_QUIT:
1348	goto quit;
1349
1350	default:
1351	req->result = -1;
1352	break;
1353	}
1354
1355	req->errorno = errno;
1356
1357	X_LOCK (reslock);
1358
1359	++npending;
1360
1361	if (!reqq_push (&res_queue, req))
1362	{
1363	/* write a dummy byte to the pipe so fh becomes ready */
1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1365
1366	/* optionally signal the main thread asynchronously */
1367	if (main_sig)
1368	pthread_kill (main_tid, main_sig);
1369	}
1370
1371	self->req = 0;
1372	worker_clear (self);
1373
1374	X_UNLOCK (reslock);
1375	}
1376
1377	quit:
1378	X_LOCK (wrklock);
1379	worker_free (self);
1380	X_UNLOCK (wrklock);
1381
1382	return 0;
1383	}
1384
1385	/*****************************************************************************/
1386
1387	static void atfork_prepare (void)
1388	{
1389	X_LOCK (wrklock);
1390	X_LOCK (reqlock);
1391	X_LOCK (reslock);
1392	#if !HAVE_PREADWRITE
1393	X_LOCK (preadwritelock);
1394	#endif
1395	#if !HAVE_READDIR_R
1396	X_LOCK (readdirlock);
1397	#endif
1398	}
1399
1400	static void atfork_parent (void)
1401	{
1402	#if !HAVE_READDIR_R
1403	X_UNLOCK (readdirlock);
1404	#endif
1405	#if !HAVE_PREADWRITE
1406	X_UNLOCK (preadwritelock);
1407	#endif
1408	X_UNLOCK (reslock);
1409	X_UNLOCK (reqlock);
1410	X_UNLOCK (wrklock);
1411	}
1412
1413	static void atfork_child (void)
1414	{
1415	aio_req prv;
1416
1417	while (prv = reqq_shift (&req_queue))
1418	req_destroy (prv);
1419
1420	while (prv = reqq_shift (&res_queue))
1421	req_destroy (prv);
1422
1423	while (wrk_first.next != &wrk_first)
1424	{
1425	worker *wrk = wrk_first.next;
1426
1427	if (wrk->req)
1428	req_destroy (wrk->req);
1429
1430	worker_clear (wrk);
1431	worker_free (wrk);
1432	}
1433
1434	started = 0;
1435	idle = 0;
1436	nreqs = 0;
1437	nready = 0;
1438	npending = 0;
1439
1440	create_respipe ();
1441
1442	atfork_parent ();
1443	}	768	}
1444		769
1445	#define dREQ \	770	#define dREQ \
		771	SV *cb_cv; \
1446	aio_req req; \	772	aio_req req; \
1447	int req_pri = next_pri; \	773	int req_pri = next_pri; \
1448	next_pri = DEFAULT_PRI + PRI_BIAS; \	774	next_pri = EIO_PRI_DEFAULT; \
1449	\	775	\
1450	if (SvOK (callback) && !SvROK (callback)) \	776	cb_cv = get_cb (callback); \
1451	croak ("callback must be undef or of reference type"); \
1452	\	777	\
1453	Newz (0, req, 1, aio_cb); \	778	Newz (0, req, 1, eio_req); \
1454	if (!req) \	779	if (!req) \
1455	croak ("out of memory during aio_req allocation"); \	780	croak ("out of memory during eio_req allocation"); \
1456	\	781	\
1457	req->callback = newSVsv (callback); \	782	req->callback = SvREFCNT_inc (cb_cv); \
1458	req->pri = req_pri	783	req->pri = req_pri
1459		784
1460	#define REQ_SEND \	785	#define REQ_SEND \
		786	PUTBACK; \
1461	req_send (req); \	787	req_submit (req); \
		788	SPAGAIN; \
1462	\	789	\
1463	if (GIMME_V != G_VOID) \	790	if (GIMME_V != G_VOID) \
1464	XPUSHs (req_sv (req, AIO_REQ_KLASS));	791	XPUSHs (req_sv (req, aio_req_stash));
1465		792
1466	MODULE = IO::AIO PACKAGE = IO::AIO	793	MODULE = IO::AIO PACKAGE = IO::AIO
1467		794
1468	PROTOTYPES: ENABLE	795	PROTOTYPES: ENABLE
1469		796
1470	BOOT:	797	BOOT:
1471	{	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 (FALLOC_FL_KEEP_SIZE)
		899
		900	const_eio (READDIR_DENTS)
		901	const_eio (READDIR_DIRS_FIRST)
		902	const_eio (READDIR_STAT_ORDER)
		903	const_eio (READDIR_FOUND_UNKNOWN)
		904
		905	const_eio (DT_UNKNOWN)
		906	const_eio (DT_FIFO)
		907	const_eio (DT_CHR)
		908	const_eio (DT_DIR)
		909	const_eio (DT_BLK)
		910	const_eio (DT_REG)
		911	const_eio (DT_LNK)
		912	const_eio (DT_SOCK)
		913	const_eio (DT_WHT)
		914	};
		915
1472	stash = gv_stashpv ("IO::AIO", 1);	916	aio_stash = gv_stashpv ("IO::AIO" , 1);
		917	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		918	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1473		919
1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	920	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	921	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1479	#ifdef _WIN32
1480	X_MUTEX_CHECK (wrklock);
1481	X_MUTEX_CHECK (reslock);
1482	X_MUTEX_CHECK (reqlock);
1483	X_MUTEX_CHECK (reqwait);
1484	X_MUTEX_CHECK (preadwritelock);
1485	X_MUTEX_CHECK (readdirlock);
1486		922
1487	X_COND_CHECK (reqwait);	923	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1488	#else
1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1491	#endif
1492		924
1493	create_respipe ();	925	create_respipe ();
1494		926
1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	927	if (eio_init (want_poll, done_poll) < 0)
1496	}	928	croak ("IO::AIO: unable to initialise eio library");
1497		929
		930	/* atfork child called in fifo order, so before eio's handler */
		931	X_THREAD_ATFORK (0, 0, atfork_child);
		932	}
		933
1498	void	934	void
1499	max_poll_reqs (int nreqs)	935	max_poll_reqs (unsigned int nreqs)
1500	PROTOTYPE: $	936	PROTOTYPE: $
1501	CODE:	937	CODE:
1502	max_poll_reqs = nreqs;	938	eio_set_max_poll_reqs (nreqs);
1503		939
1504	void	940	void
1505	max_poll_time (double nseconds)	941	max_poll_time (double nseconds)
1506	PROTOTYPE: $	942	PROTOTYPE: $
1507	CODE:	943	CODE:
1508	max_poll_time = nseconds * AIO_TICKS;	944	eio_set_max_poll_time (nseconds);
1509		945
1510	void	946	void
1511	min_parallel (int nthreads)	947	min_parallel (unsigned int nthreads)
1512	PROTOTYPE: $
1513
1514	void
1515	max_parallel (int nthreads)
1516	PROTOTYPE: $
1517
1518	void
1519	max_idle (int nthreads)
1520	PROTOTYPE: $	948	PROTOTYPE: $
1521	CODE:	949	CODE:
1522	set_max_idle (nthreads);	950	eio_set_min_parallel (nthreads);
1523		951
1524	int	952	void
1525	max_outstanding (int maxreqs)	953	max_parallel (unsigned int nthreads)
1526	PROTOTYPE: $	954	PROTOTYPE: $
1527	CODE:	955	CODE:
1528	RETVAL = max_outstanding;	956	eio_set_max_parallel (nthreads);
		957
		958	void
		959	max_idle (unsigned int nthreads)
		960	PROTOTYPE: $
		961	CODE:
		962	eio_set_max_idle (nthreads);
		963
		964	void
		965	idle_timeout (unsigned int seconds)
		966	PROTOTYPE: $
		967	CODE:
		968	eio_set_idle_timeout (seconds);
		969
		970	void
		971	max_outstanding (unsigned int maxreqs)
		972	PROTOTYPE: $
		973	CODE:
1529	max_outstanding = maxreqs;	974	max_outstanding = maxreqs;
1530	OUTPUT:
1531	RETVAL
1532		975
1533	void	976	void
1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	977	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1535	PROTOTYPE: $$$;$
1536	PPCODE:	978	PPCODE:
1537	{	979	{
1538	dREQ;	980	dREQ;
1539		981
1540	req->type = REQ_OPEN;	982	req->type = EIO_OPEN;
1541	req->sv1 = newSVsv (pathname);	983	req->sv1 = newSVsv (pathname);
1542	req->ptr1 = SvPVbyte_nolen (req->sv1);	984	req->ptr1 = SvPVbyte_nolen (req->sv1);
1543	req->int1 = flags;	985	req->int1 = flags;
1544	req->mode = mode;	986	req->int2 = mode;
1545		987
1546	REQ_SEND;	988	REQ_SEND;
1547	}	989	}
1548		990
1549	void	991	void
1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	992	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$
1552	ALIAS:	993	ALIAS:
1553	aio_fsync = REQ_FSYNC	994	aio_fsync = EIO_FSYNC
1554	aio_fdatasync = REQ_FDATASYNC	995	aio_fdatasync = EIO_FDATASYNC
1555	PPCODE:	996	PPCODE:
1556	{	997	{
		998	int fd = s_fileno_croak (fh, 0);
1557	dREQ;	999	dREQ;
1558		1000
1559	req->type = ix;	1001	req->type = ix;
1560	req->sv1 = newSVsv (fh);	1002	req->sv1 = newSVsv (fh);
1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1003	req->int1 = fd;
1562		1004
1563	REQ_SEND (req);	1005	REQ_SEND (req);
1564	}	1006	}
1565		1007
1566	void	1008	void
		1009	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1010	PPCODE:
		1011	{
		1012	int fd = s_fileno_croak (fh, 0);
		1013	dREQ;
		1014
		1015	req->type = EIO_SYNC_FILE_RANGE;
		1016	req->sv1 = newSVsv (fh);
		1017	req->int1 = fd;
		1018	req->offs = offset;
		1019	req->size = nbytes;
		1020	req->int2 = flags;
		1021
		1022	REQ_SEND (req);
		1023	}
		1024
		1025	void
		1026	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1027	PPCODE:
		1028	{
		1029	int fd = s_fileno_croak (fh, 0);
		1030	dREQ;
		1031
		1032	req->type = EIO_FALLOCATE;
		1033	req->sv1 = newSVsv (fh);
		1034	req->int1 = fd;
		1035	req->int2 = mode;
		1036	req->offs = offset;
		1037	req->size = len;
		1038
		1039	REQ_SEND (req);
		1040	}
		1041
		1042	void
1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1043	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1568	PROTOTYPE: $;$
1569	PPCODE:	1044	PPCODE:
1570	{	1045	{
		1046	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1047	int fd = s_fileno_croak (fh, 0);
1571	dREQ;	1048	dREQ;
1572		1049
		1050	if (expect_false (close_fd < 0))
		1051	{
		1052	int pipefd [2];
		1053
		1054	if (
		1055	#ifdef _WIN32
		1056	_pipe (pipefd, 1, _O_BINARY) < 0
		1057	#else
		1058	pipe (pipefd) < 0
		1059	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1060	#endif
		1061	|| close (pipefd [1]) < 0
		1062	)
		1063	abort (); /*D*/
		1064
		1065	close_fd = pipefd [0];
		1066	}
		1067
1573	req->type = REQ_CLOSE;	1068	req->type = EIO_DUP2;
		1069	req->int1 = close_fd;
1574	req->sv1 = newSVsv (fh);	1070	req->sv2 = newSVsv (fh);
1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1071	req->int2 = fd;
1576		1072
1577	REQ_SEND (req);	1073	REQ_SEND (req);
1578	}	1074	}
1579		1075
1580	void	1076	void
1581	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1077	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1582	ALIAS:	1078	ALIAS:
1583	aio_read = REQ_READ	1079	aio_read = EIO_READ
1584	aio_write = REQ_WRITE	1080	aio_write = EIO_WRITE
1585	PROTOTYPE: $$$$$;$
1586	PPCODE:	1081	PPCODE:
1587	{	1082	{
1588	STRLEN svlen;	1083	STRLEN svlen;
		1084	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1589	char *svptr = SvPVbyte (data, svlen);	1085	char *svptr = SvPVbyte (data, svlen);
1590	UV len = SvUV (length);	1086	UV len = SvUV (length);
1591		1087
1592	SvUPGRADE (data, SVt_PV);
1593	SvPOK_on (data);
1594
1595	if (dataoffset < 0)	1088	if (dataoffset < 0)
1596	dataoffset += svlen;	1089	dataoffset += svlen;
1597		1090
1598	if (dataoffset < 0 || dataoffset > svlen)	1091	if (dataoffset < 0 || dataoffset > svlen)
1599	croak ("dataoffset outside of data scalar");	1092	croak ("dataoffset outside of data scalar");
1600		1093
1601	if (ix == REQ_WRITE)	1094	if (ix == EIO_WRITE)
1602	{	1095	{
1603	/* write: check length and adjust. */	1096	/* write: check length and adjust. */
1604	if (!SvOK (length) || len + dataoffset > svlen)	1097	if (!SvOK (length) || len + dataoffset > svlen)
1605	len = svlen - dataoffset;	1098	len = svlen - dataoffset;
1606	}	1099	}
1607	else	1100	else
1608	{	1101	{
1609	/* read: grow scalar as necessary */	1102	/* read: check type and grow scalar as necessary */
		1103	SvUPGRADE (data, SVt_PV);
1610	svptr = SvGROW (data, len + dataoffset + 1);	1104	svptr = SvGROW (data, len + dataoffset + 1);
1611	}	1105	}
1612		1106
1613	if (len < 0)
1614	croak ("length must not be negative");
1615
1616	{	1107	{
1617	dREQ;	1108	dREQ;
1618		1109
1619	req->type = ix;	1110	req->type = ix;
1620	req->sv1 = newSVsv (fh);	1111	req->sv1 = newSVsv (fh);
1621	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1112	req->int1 = fd;
1622	: IoOFP (sv_2io (fh)));
1623	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1113	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1624	req->size = len;	1114	req->size = len;
1625	req->sv2 = SvREFCNT_inc (data);	1115	req->sv2 = SvREFCNT_inc (data);
1626	req->ptr1 = (char *)svptr + dataoffset;	1116	req->ptr2 = (char *)svptr + dataoffset;
1627	req->stroffset = dataoffset;	1117	req->stroffset = dataoffset;
1628		1118
1629	if (!SvREADONLY (data))	1119	if (!SvREADONLY (data))
1630	{	1120	{
1631	SvREADONLY_on (data);	1121	SvREADONLY_on (data);
…		…
1636	}	1126	}
1637	}	1127	}
1638		1128
1639	void	1129	void
1640	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1130	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1641	PROTOTYPE: $$;$	1131	ALIAS:
		1132	aio_readlink = EIO_READLINK
		1133	aio_realpath = EIO_REALPATH
1642	PPCODE:	1134	PPCODE:
1643	{	1135	{
1644	SV *data;
1645	dREQ;	1136	dREQ;
1646		1137
1647	data = newSV (NAME_MAX);
1648	SvPOK_on (data);
1649
1650	req->type = REQ_READLINK;	1138	req->type = ix;
1651	req->sv1 = newSVsv (path);	1139	req->sv1 = newSVsv (path);
1652	req->ptr2 = SvPVbyte_nolen (req->sv1);	1140	req->ptr1 = SvPVbyte_nolen (req->sv1);
1653	req->sv2 = data;
1654	req->ptr1 = SvPVbyte_nolen (data);
1655		1141
1656	REQ_SEND;	1142	REQ_SEND;
1657	}	1143	}
1658		1144
1659	void	1145	void
1660	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1146	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1661	PROTOTYPE: $$$$;$
1662	PPCODE:	1147	PPCODE:
1663	{	1148	{
		1149	int ifd = s_fileno_croak (in_fh , 0);
		1150	int ofd = s_fileno_croak (out_fh, 1);
1664	dREQ;	1151	dREQ;
1665		1152
1666	req->type = REQ_SENDFILE;	1153	req->type = EIO_SENDFILE;
1667	req->sv1 = newSVsv (out_fh);	1154	req->sv1 = newSVsv (out_fh);
1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1155	req->int1 = ofd;
1669	req->sv2 = newSVsv (in_fh);	1156	req->sv2 = newSVsv (in_fh);
1670	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1157	req->int2 = ifd;
1671	req->offs = SvVAL64 (in_offset);	1158	req->offs = in_offset;
1672	req->size = length;	1159	req->size = length;
1673		1160
1674	REQ_SEND;	1161	REQ_SEND;
1675	}	1162	}
1676		1163
1677	void	1164	void
1678	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1165	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1679	PROTOTYPE: $$$;$
1680	PPCODE:	1166	PPCODE:
1681	{	1167	{
		1168	int fd = s_fileno_croak (fh, 0);
1682	dREQ;	1169	dREQ;
1683		1170
1684	req->type = REQ_READAHEAD;	1171	req->type = EIO_READAHEAD;
1685	req->sv1 = newSVsv (fh);	1172	req->sv1 = newSVsv (fh);
1686	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1173	req->int1 = fd;
1687	req->offs = SvVAL64 (offset);	1174	req->offs = offset;
1688	req->size = length;	1175	req->size = length;
1689		1176
1690	REQ_SEND;	1177	REQ_SEND;
1691	}	1178	}
1692		1179
1693	void	1180	void
1694	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1181	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1695	ALIAS:	1182	ALIAS:
1696	aio_stat = REQ_STAT	1183	aio_stat = EIO_STAT
1697	aio_lstat = REQ_LSTAT	1184	aio_lstat = EIO_LSTAT
		1185	aio_statvfs = EIO_STATVFS
1698	PPCODE:	1186	PPCODE:
1699	{	1187	{
1700	dREQ;	1188	dREQ;
1701		1189
1702	req->ptr2 = malloc (sizeof (Stat_t));
1703	if (!req->ptr2)
1704	{
1705	req_destroy (req);
1706	croak ("out of memory during aio_stat statdata allocation");
1707	}
1708
1709	req->flags |= FLAG_PTR2_FREE;
1710	req->sv1 = newSVsv (fh_or_path);	1190	req->sv1 = newSVsv (fh_or_path);
1711		1191
1712	if (SvPOK (fh_or_path))	1192	if (SvPOK (req->sv1))
1713	{	1193	{
1714	req->type = ix;	1194	req->type = ix;
1715	req->ptr1 = SvPVbyte_nolen (req->sv1);	1195	req->ptr1 = SvPVbyte_nolen (req->sv1);
1716	}	1196	}
1717	else	1197	else
1718	{	1198	{
1719	req->type = REQ_FSTAT;	1199	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1720	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1200	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1721	}	1201	}
1722		1202
1723	REQ_SEND;	1203	REQ_SEND;
1724	}	1204	}
		1205
		1206	UV
		1207	major (UV dev)
		1208	ALIAS:
		1209	minor = 1
		1210	CODE:
		1211	RETVAL = ix ? major (dev) : minor (dev);
		1212	OUTPUT:
		1213	RETVAL
		1214
		1215	UV
		1216	makedev (UV maj, UV min)
		1217	CODE:
		1218	RETVAL = makedev (maj, min);
		1219	OUTPUT:
		1220	RETVAL
1725		1221
1726	void	1222	void
1727	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1223	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1728	PPCODE:	1224	PPCODE:
1729	{	1225	{
…		…
1731		1227
1732	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1228	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1733	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1229	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1734	req->sv1 = newSVsv (fh_or_path);	1230	req->sv1 = newSVsv (fh_or_path);
1735		1231
1736	if (SvPOK (fh_or_path))	1232	if (SvPOK (req->sv1))
1737	{	1233	{
1738	req->type = REQ_UTIME;	1234	req->type = EIO_UTIME;
1739	req->ptr1 = SvPVbyte_nolen (req->sv1);	1235	req->ptr1 = SvPVbyte_nolen (req->sv1);
1740	}	1236	}
1741	else	1237	else
1742	{	1238	{
1743	req->type = REQ_FUTIME;	1239	req->type = EIO_FUTIME;
1744	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1240	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1745	}	1241	}
1746		1242
1747	REQ_SEND;	1243	REQ_SEND;
1748	}	1244	}
…		…
1754	dREQ;	1250	dREQ;
1755		1251
1756	req->sv1 = newSVsv (fh_or_path);	1252	req->sv1 = newSVsv (fh_or_path);
1757	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1253	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1758		1254
1759	if (SvPOK (fh_or_path))	1255	if (SvPOK (req->sv1))
1760	{	1256	{
1761	req->type = REQ_TRUNCATE;	1257	req->type = EIO_TRUNCATE;
1762	req->ptr1 = SvPVbyte_nolen (req->sv1);	1258	req->ptr1 = SvPVbyte_nolen (req->sv1);
1763	}	1259	}
1764	else	1260	else
1765	{	1261	{
1766	req->type = REQ_FTRUNCATE;	1262	req->type = EIO_FTRUNCATE;
1767	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1263	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1768	}	1264	}
1769		1265
1770	REQ_SEND;	1266	REQ_SEND;
1771	}	1267	}
1772		1268
1773	void	1269	void
1774	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1270	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1271	ALIAS:
		1272	aio_chmod = EIO_CHMOD
		1273	aio_mkdir = EIO_MKDIR
1775	PPCODE:	1274	PPCODE:
1776	{	1275	{
1777	dREQ;	1276	dREQ;
1778		1277
1779	req->mode = mode;	1278	req->int2 = mode;
1780	req->sv1 = newSVsv (fh_or_path);	1279	req->sv1 = newSVsv (fh_or_path);
1781		1280
1782	if (SvPOK (fh_or_path))	1281	if (SvPOK (req->sv1))
1783	{	1282	{
1784	req->type = REQ_CHMOD;	1283	req->type = ix;
1785	req->ptr1 = SvPVbyte_nolen (req->sv1);	1284	req->ptr1 = SvPVbyte_nolen (req->sv1);
1786	}	1285	}
1787	else	1286	else
1788	{	1287	{
1789	req->type = REQ_FCHMOD;	1288	req->type = EIO_FCHMOD;
1790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1289	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1791	}	1290	}
1792		1291
1793	REQ_SEND;	1292	REQ_SEND;
1794	}	1293	}
…		…
1801		1300
1802	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1301	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1803	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1302	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1804	req->sv1 = newSVsv (fh_or_path);	1303	req->sv1 = newSVsv (fh_or_path);
1805		1304
1806	if (SvPOK (fh_or_path))	1305	if (SvPOK (req->sv1))
1807	{	1306	{
1808	req->type = REQ_CHOWN;	1307	req->type = EIO_CHOWN;
1809	req->ptr1 = SvPVbyte_nolen (req->sv1);	1308	req->ptr1 = SvPVbyte_nolen (req->sv1);
1810	}	1309	}
1811	else	1310	else
1812	{	1311	{
1813	req->type = REQ_FCHOWN;	1312	req->type = EIO_FCHOWN;
1814	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1313	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1815	}	1314	}
1816		1315
1817	REQ_SEND;	1316	REQ_SEND;
1818	}	1317	}
1819		1318
1820	void	1319	void
		1320	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1321	PPCODE:
		1322	{
		1323	dREQ;
		1324
		1325	req->type = EIO_READDIR;
		1326	req->sv1 = newSVsv (pathname);
		1327	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1328	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1329
		1330	if (flags & EIO_READDIR_DENTS)
		1331	req->int1 |= EIO_READDIR_CUSTOM2;
		1332
		1333	REQ_SEND;
		1334	}
		1335
		1336	void
1821	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1337	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1822	ALIAS:	1338	ALIAS:
1823	aio_unlink = REQ_UNLINK	1339	aio_unlink = EIO_UNLINK
1824	aio_rmdir = REQ_RMDIR	1340	aio_rmdir = EIO_RMDIR
1825	aio_readdir = REQ_READDIR	1341	aio_readdir = EIO_READDIR
1826	PPCODE:	1342	PPCODE:
1827	{	1343	{
1828	dREQ;	1344	dREQ;
1829		1345
1830	req->type = ix;	1346	req->type = ix;
…		…
1833		1349
1834	REQ_SEND;	1350	REQ_SEND;
1835	}	1351	}
1836		1352
1837	void	1353	void
1838	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1839	PPCODE:
1840	{
1841	dREQ;
1842
1843	req->type = REQ_MKDIR;
1844	req->sv1 = newSVsv (pathname);
1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1846	req->mode = mode;
1847
1848	REQ_SEND;
1849	}
1850
1851	void
1852	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1354	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1853	ALIAS:	1355	ALIAS:
1854	aio_link = REQ_LINK	1356	aio_link = EIO_LINK
1855	aio_symlink = REQ_SYMLINK	1357	aio_symlink = EIO_SYMLINK
1856	aio_rename = REQ_RENAME	1358	aio_rename = EIO_RENAME
1857	PPCODE:	1359	PPCODE:
1858	{	1360	{
1859	dREQ;	1361	dREQ;
1860		1362
1861	req->type = ix;	1363	req->type = ix;
1862	req->sv2 = newSVsv (oldpath);	1364	req->sv1 = newSVsv (oldpath);
		1365	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1366	req->sv2 = newSVsv (newpath);
1863	req->ptr2 = SvPVbyte_nolen (req->sv2);	1367	req->ptr2 = SvPVbyte_nolen (req->sv2);
1864	req->sv1 = newSVsv (newpath);
1865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1866		1368
1867	REQ_SEND;	1369	REQ_SEND;
1868	}	1370	}
1869		1371
1870	void	1372	void
1871	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1373	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1872	PPCODE:	1374	PPCODE:
1873	{	1375	{
1874	dREQ;	1376	dREQ;
1875		1377
1876	req->type = REQ_MKNOD;	1378	req->type = EIO_MKNOD;
1877	req->sv1 = newSVsv (pathname);	1379	req->sv1 = newSVsv (pathname);
1878	req->ptr1 = SvPVbyte_nolen (req->sv1);	1380	req->ptr1 = SvPVbyte_nolen (req->sv1);
1879	req->mode = (mode_t)mode;	1381	req->int2 = (mode_t)mode;
1880	req->offs = dev;	1382	req->offs = dev;
1881		1383
1882	REQ_SEND;	1384	REQ_SEND;
1883	}	1385	}
1884		1386
1885	void	1387	void
		1388	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1389	ALIAS:
		1390	aio_mtouch = EIO_MTOUCH
		1391	aio_msync = EIO_MSYNC
		1392	PPCODE:
		1393	{
		1394	STRLEN svlen;
		1395	char *svptr = SvPVbyte (data, svlen);
		1396	UV len = SvUV (length);
		1397
		1398	if (offset < 0)
		1399	offset += svlen;
		1400
		1401	if (offset < 0 || offset > svlen)
		1402	croak ("offset outside of scalar");
		1403
		1404	if (!SvOK (length) || len + offset > svlen)
		1405	len = svlen - offset;
		1406
		1407	{
		1408	dREQ;
		1409
		1410	req->type = ix;
		1411	req->sv2 = SvREFCNT_inc (data);
		1412	req->ptr2 = (char *)svptr + offset;
		1413	req->size = len;
		1414	req->int1 = flags;
		1415
		1416	REQ_SEND;
		1417	}
		1418	}
		1419
		1420	void
		1421	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1422	PPCODE:
		1423	{
		1424	STRLEN svlen;
		1425	char *svptr = SvPVbyte (data, svlen);
		1426	UV len = SvUV (length);
		1427
		1428	if (offset < 0)
		1429	offset += svlen;
		1430
		1431	if (offset < 0 || offset > svlen)
		1432	croak ("offset outside of scalar");
		1433
		1434	if (!SvOK (length) || len + offset > svlen)
		1435	len = svlen - offset;
		1436
		1437	{
		1438	dREQ;
		1439
		1440	req->type = EIO_MLOCK;
		1441	req->sv2 = SvREFCNT_inc (data);
		1442	req->ptr2 = (char *)svptr + offset;
		1443	req->size = len;
		1444
		1445	REQ_SEND;
		1446	}
		1447	}
		1448
		1449	void
		1450	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1451	PPCODE:
		1452	{
		1453	dREQ;
		1454
		1455	req->type = EIO_MLOCKALL;
		1456	req->int1 = flags;
		1457
		1458	REQ_SEND;
		1459	}
		1460
		1461	void
1886	aio_busy (double delay, SV *callback=&PL_sv_undef)	1462	aio_busy (double delay, SV *callback=&PL_sv_undef)
1887	PPCODE:	1463	PPCODE:
1888	{	1464	{
1889	dREQ;	1465	dREQ;
1890		1466
1891	req->type = REQ_BUSY;	1467	req->type = EIO_BUSY;
1892	req->nv1 = delay < 0. ? 0. : delay;	1468	req->nv1 = delay < 0. ? 0. : delay;
1893		1469
1894	REQ_SEND;	1470	REQ_SEND;
1895	}	1471	}
1896		1472
1897	void	1473	void
1898	aio_group (SV *callback=&PL_sv_undef)	1474	aio_group (SV *callback=&PL_sv_undef)
1899	PROTOTYPE: ;$
1900	PPCODE:	1475	PPCODE:
1901	{	1476	{
1902	dREQ;	1477	dREQ;
1903		1478
1904	req->type = REQ_GROUP;	1479	req->type = EIO_GROUP;
1905		1480
1906	req_send (req);	1481	req_submit (req);
1907	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1482	XPUSHs (req_sv (req, aio_grp_stash));
1908	}	1483	}
1909		1484
1910	void	1485	void
1911	aio_nop (SV *callback=&PL_sv_undef)	1486	aio_nop (SV *callback=&PL_sv_undef)
1912	ALIAS:	1487	ALIAS:
1913	aio_nop = REQ_NOP	1488	aio_nop = EIO_NOP
1914	aio_sync = REQ_SYNC	1489	aio_sync = EIO_SYNC
1915	PPCODE:	1490	PPCODE:
1916	{	1491	{
1917	dREQ;	1492	dREQ;
1918		1493
1919	req->type = ix;	1494	req->type = ix;
…		…
1921	REQ_SEND;	1496	REQ_SEND;
1922	}	1497	}
1923		1498
1924	int	1499	int
1925	aioreq_pri (int pri = 0)	1500	aioreq_pri (int pri = 0)
1926	PROTOTYPE: ;$
1927	CODE:	1501	CODE:
1928	RETVAL = next_pri - PRI_BIAS;	1502	RETVAL = next_pri;
1929	if (items > 0)	1503	if (items > 0)
1930	{	1504	{
1931	if (pri < PRI_MIN) pri = PRI_MIN;	1505	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1932	if (pri > PRI_MAX) pri = PRI_MAX;	1506	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1933	next_pri = pri + PRI_BIAS;	1507	next_pri = pri;
1934	}	1508	}
1935	OUTPUT:	1509	OUTPUT:
1936	RETVAL	1510	RETVAL
1937		1511
1938	void	1512	void
1939	aioreq_nice (int nice = 0)	1513	aioreq_nice (int nice = 0)
1940	CODE:	1514	CODE:
1941	nice = next_pri - nice;	1515	nice = next_pri - nice;
1942	if (nice < PRI_MIN) nice = PRI_MIN;	1516	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1943	if (nice > PRI_MAX) nice = PRI_MAX;	1517	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1944	next_pri = nice + PRI_BIAS;	1518	next_pri = nice;
1945		1519
1946	void	1520	void
1947	flush ()	1521	flush ()
1948	PROTOTYPE:
1949	CODE:	1522	CODE:
1950	while (nreqs)	1523	while (eio_nreqs ())
1951	{	1524	{
1952	poll_wait ();	1525	poll_wait ();
1953	poll_cb ();	1526	poll_cb ();
1954	}	1527	}
1955		1528
1956	int	1529	int
1957	poll()	1530	poll ()
1958	PROTOTYPE:
1959	CODE:	1531	CODE:
1960	poll_wait ();	1532	poll_wait ();
1961	RETVAL = poll_cb ();	1533	RETVAL = poll_cb ();
1962	OUTPUT:	1534	OUTPUT:
1963	RETVAL	1535	RETVAL
1964		1536
1965	int	1537	int
1966	poll_fileno()	1538	poll_fileno ()
1967	PROTOTYPE:
1968	CODE:	1539	CODE:
1969	RETVAL = respipe [0];	1540	RETVAL = s_epipe_fd (&respipe);
1970	OUTPUT:	1541	OUTPUT:
1971	RETVAL	1542	RETVAL
1972		1543
1973	int	1544	int
1974	poll_cb(...)	1545	poll_cb (...)
1975	PROTOTYPE:	1546	PROTOTYPE:
1976	CODE:	1547	CODE:
1977	RETVAL = poll_cb ();	1548	RETVAL = poll_cb ();
1978	OUTPUT:	1549	OUTPUT:
1979	RETVAL	1550	RETVAL
1980		1551
1981	void	1552	void
1982	poll_wait()	1553	poll_wait ()
1983	PROTOTYPE:
1984	CODE:	1554	CODE:
1985	poll_wait ();	1555	poll_wait ();
1986		1556
1987	void
1988	setsig (int signum = SIGIO)
1989	PROTOTYPE: ;$
1990	CODE:
1991	{
1992	if (block_sig_level)
1993	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1994
1995	X_LOCK (reslock);
1996	main_tid = pthread_self ();
1997	main_sig = signum;
1998	X_UNLOCK (reslock);
1999
2000	if (main_sig && npending)
2001	pthread_kill (main_tid, main_sig);
2002	}
2003
2004	void
2005	aio_block (SV *cb)
2006	PROTOTYPE: &
2007	PPCODE:
2008	{
2009	int count;
2010
2011	block_sig ();
2012	PUSHMARK (SP);
2013	PUTBACK;
2014	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
2015	unblock_sig ();
2016
2017	if (SvTRUE (ERRSV))
2018	croak (0);
2019
2020	XSRETURN (count);
2021	}
2022
2023	int	1557	int
2024	nreqs()	1558	nreqs ()
2025	PROTOTYPE:
2026	CODE:	1559	CODE:
2027	RETVAL = nreqs;	1560	RETVAL = eio_nreqs ();
2028	OUTPUT:	1561	OUTPUT:
2029	RETVAL	1562	RETVAL
2030		1563
2031	int	1564	int
2032	nready()	1565	nready ()
2033	PROTOTYPE:
2034	CODE:	1566	CODE:
2035	RETVAL = get_nready ();	1567	RETVAL = eio_nready ();
2036	OUTPUT:	1568	OUTPUT:
2037	RETVAL	1569	RETVAL
2038		1570
2039	int	1571	int
2040	npending()	1572	npending ()
2041	PROTOTYPE:
2042	CODE:	1573	CODE:
2043	RETVAL = get_npending ();	1574	RETVAL = eio_npending ();
2044	OUTPUT:	1575	OUTPUT:
2045	RETVAL	1576	RETVAL
2046		1577
2047	int	1578	int
2048	nthreads()	1579	nthreads ()
2049	PROTOTYPE:
2050	CODE:	1580	CODE:
2051	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1581	RETVAL = eio_nthreads ();
2052	RETVAL = started;
2053	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2054	OUTPUT:	1582	OUTPUT:
2055	RETVAL	1583	RETVAL
2056		1584
		1585	int
		1586	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1587	CODE:
		1588	RETVAL = posix_fadvise (fh, offset, length, advice);
		1589	OUTPUT:
		1590	RETVAL
		1591
		1592	ssize_t
		1593	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1594	CODE:
		1595	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1596	OUTPUT:
		1597	RETVAL
		1598
		1599	void
		1600	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1601	PPCODE:
		1602	sv_unmagic (scalar, MMAP_MAGIC);
		1603	{
		1604	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1605	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1606	if (addr == (void *)-1)
		1607	XSRETURN_NO;
		1608
		1609	sv_force_normal (scalar);
		1610
		1611	/* we store the length in mg_obj, as namlen is I32 :/ */
		1612	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1613	->mg_obj = (SV *)length;
		1614
		1615	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1616
		1617	if (!(prot & PROT_WRITE))
		1618	SvREADONLY_on (scalar);
		1619
		1620	if (SvLEN (scalar))
		1621	Safefree (SvPVX (scalar));
		1622
		1623	SvPVX (scalar) = (char *)addr;
		1624	SvCUR_set (scalar, length);
		1625	SvLEN_set (scalar, 0);
		1626	SvPOK_only (scalar);
		1627
		1628	XSRETURN_YES;
		1629	}
		1630
		1631	void
		1632	munmap (SV *scalar)
		1633	CODE:
		1634	sv_unmagic (scalar, MMAP_MAGIC);
		1635
		1636	int
		1637	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1638	ALIAS:
		1639	mprotect = 1
		1640	CODE:
		1641	{
		1642	STRLEN svlen;
		1643	void *addr = SvPVbyte (scalar, svlen);
		1644	size_t len = SvUV (length);
		1645
		1646	if (offset < 0)
		1647	offset += svlen;
		1648
		1649	if (offset < 0 || offset > svlen)
		1650	croak ("offset outside of scalar");
		1651
		1652	if (!SvOK (length) || len + offset > svlen)
		1653	len = svlen - offset;
		1654
		1655	addr = (void *)(((intptr_t)addr) + offset);
		1656	eio_page_align (&addr, &len);
		1657
		1658	switch (ix)
		1659	{
		1660	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1661	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1662	}
		1663	}
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	int
		1668	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1669	CODE:
		1670	{
		1671	STRLEN svlen;
		1672	void *addr = SvPVbyte (scalar, svlen);
		1673	size_t len = SvUV (length);
		1674
		1675	if (offset < 0)
		1676	offset += svlen;
		1677
		1678	if (offset < 0 || offset > svlen)
		1679	croak ("offset outside of scalar");
		1680
		1681	if (!SvOK (length) || len + offset > svlen)
		1682	len = svlen - offset;
		1683
		1684	addr = (void *)(((intptr_t)addr) + offset);
		1685	eio_page_align (&addr, &len);
		1686	#if _POSIX_MEMLOCK_RANGE
		1687	RETVAL = munlock (addr, len);
		1688	#else
		1689	RETVAL = ((errno = ENOSYS), -1);
		1690	#endif
		1691	}
		1692	OUTPUT:
		1693	RETVAL
		1694
		1695	int
		1696	munlockall ()
		1697	CODE:
		1698	#if _POSIX_MEMLOCK
		1699	munlockall ();
		1700	#else
		1701	RETVAL = -1;
		1702	errno = ENOSYS;
		1703	#endif
		1704	OUTPUT:
		1705	RETVAL
		1706
		1707	void _on_next_submit (SV *cb)
		1708	CODE:
		1709	SvREFCNT_dec (on_next_submit);
		1710	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1711
2057	PROTOTYPES: DISABLE	1712	PROTOTYPES: DISABLE
2058		1713
2059	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1714	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2060		1715
2061	void	1716	void
2062	cancel (aio_req_ornot req)	1717	cancel (aio_req_ornot req)
2063	CODE:	1718	CODE:
2064	req_cancel (req);	1719	eio_cancel (req);
2065		1720
2066	void	1721	void
2067	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1722	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2068	CODE:	1723	PPCODE:
		1724	{
		1725	if (GIMME_V != G_VOID)
		1726	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1727
		1728	if (items > 1)
		1729	{
		1730	SV *cb_cv =get_cb (callback);
		1731
2069	SvREFCNT_dec (req->callback);	1732	SvREFCNT_dec (req->callback);
2070	req->callback = newSVsv (callback);	1733	req->callback = SvREFCNT_inc (cb_cv);
		1734	}
		1735	}
2071		1736
2072	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1737	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2073		1738
2074	void	1739	void
2075	add (aio_req grp, ...)	1740	add (aio_req grp, ...)
2076	PPCODE:	1741	PPCODE:
2077	{	1742	{
2078	int i;	1743	int i;
2079	aio_req req;
2080
2081	if (main_sig && !block_sig_level)
2082	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2083		1744
2084	if (grp->int1 == 2)	1745	if (grp->int1 == 2)
2085	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1746	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2086		1747
2087	for (i = 1; i < items; ++i )	1748	for (i = 1; i < items; ++i )
2088	{	1749	{
		1750	aio_req req;
		1751
2089	if (GIMME_V != G_VOID)	1752	if (GIMME_V != G_VOID)
2090	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1753	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2091		1754
2092	req = SvAIO_REQ (ST (i));	1755	req = SvAIO_REQ (ST (i));
2093		1756
2094	if (req)	1757	if (req)
2095	{	1758	eio_grp_add (grp, req);
2096	++grp->size;
2097	req->grp = grp;
2098
2099	req->grp_prev = 0;
2100	req->grp_next = grp->grp_first;
2101
2102	if (grp->grp_first)
2103	grp->grp_first->grp_prev = req;
2104
2105	grp->grp_first = req;
2106	}
2107	}	1759	}
2108	}	1760	}
2109		1761
2110	void	1762	void
2111	cancel_subs (aio_req_ornot req)	1763	cancel_subs (aio_req_ornot req)
…		…
2120	AV *av;	1772	AV *av;
2121		1773
2122	grp->errorno = errno;	1774	grp->errorno = errno;
2123		1775
2124	av = newAV ();	1776	av = newAV ();
		1777	av_extend (av, items - 1);
2125		1778
2126	for (i = 1; i < items; ++i )	1779	for (i = 1; i < items; ++i )
2127	av_push (av, newSVsv (ST (i)));	1780	av_push (av, newSVsv (ST (i)));
2128		1781
2129	SvREFCNT_dec (grp->sv1);	1782	SvREFCNT_dec (grp->sv1);
…		…
2136	grp->errorno = errorno;	1789	grp->errorno = errorno;
2137		1790
2138	void	1791	void
2139	limit (aio_req grp, int limit)	1792	limit (aio_req grp, int limit)
2140	CODE:	1793	CODE:
2141	grp->int2 = limit;	1794	eio_grp_limit (grp, limit);
2142	aio_grp_feed (grp);
2143		1795
2144	void	1796	void
2145	feed (aio_req grp, SV *callback=&PL_sv_undef)	1797	feed (aio_req grp, SV *callback=&PL_sv_undef)
2146	CODE:	1798	CODE:
2147	{	1799	{
2148	SvREFCNT_dec (grp->sv2);	1800	SvREFCNT_dec (grp->sv2);
2149	grp->sv2 = newSVsv (callback);	1801	grp->sv2 = newSVsv (callback);
		1802	grp->feed = aio_grp_feed;
2150		1803
2151	if (grp->int2 <= 0)	1804	if (grp->int2 <= 0)
2152	grp->int2 = 2;	1805	grp->int2 = 2;
2153		1806
2154	aio_grp_feed (grp);	1807	eio_grp_limit (grp, grp->int2);
2155	}	1808	}
2156		1809

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