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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.108 by root, Thu Oct 4 12:50:35 2007 UTC vs.
Revision 1.189 by root, Mon Jul 18 01:27:03 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	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	36
22	#undef malloc	37	#undef malloc
23	#undef free	38	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	39	#undef open
27	# undef read	40	#undef read
28	# undef write	41	#undef write
29	# undef send	42	#undef send
30	# undef recv	43	#undef recv
31	# undef stat	44	#undef stat
		45	#undef lstat
32	# undef fstat	46	#undef fstat
33	# define lstat stat
34	# undef truncate	47	#undef truncate
35	# undef ftruncate	48	#undef ftruncate
36	# undef open	49	#undef open
		50	#undef link
37	# undef close	51	#undef close
38	# undef unlink	52	#undef unlink
		53	#undef mkdir
39	# undef rmdir	54	#undef rmdir
40	# undef rename	55	#undef rename
41	# undef lseek	56	#undef lseek
42		57	#undef opendir
43	# define chown(a,b,c) (errno = ENOSYS, -1)	58	#undef readdir
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	59	#undef closedir
45	# define fchmod(a,b) (errno = ENOSYS, -1)	60	#undef chmod
46	# define symlink(a,b) (errno = ENOSYS, -1)	61	#undef fchmod
47	# define readlink(a,b,c) (errno = ENOSYS, -1)	62	#undef dup
48	# define mknod(a,b,c) (errno = ENOSYS, -1)	63	#undef dup2
49	# define truncate(a,b) (errno = ENOSYS, -1)	64	#undef abort
50	# define ftruncate(fd,o) chsize ((fd), (o))	65	#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		66
57	#else	67	#else
58		68
59	# include "autoconf/config.h"
60	# include <sys/time.h>	69	#include <sys/time.h>
61	# include <sys/select.h>	70	#include <sys/select.h>
62	# include <unistd.h>	71	#include <unistd.h>
63	# include <utime.h>	72	#include <utime.h>
64	# include <signal.h>	73	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		74
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	75	#endif
82	#endif
83		76
84	/* number of seconds after which idle threads exit */	77	#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		78
95	/* use NV for 32 bit perls as it allows larger offsets */	79	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	80	#if IVSIZE >= 8
		81	# define VAL64 IV
97	# define SvVAL64 SvIV	82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
98	#else	84	#else
		85	# define VAL64 NV
99	# define SvVAL64 SvNV	86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
100	#endif	88	#endif
101		89
102	static HV *stash;	90	/*****************************************************************************/
103		91
104	#define dBUF \	92	#if __GNUC__ >= 3
105	char *aio_buf; \	93	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	94	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	95	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	96	#endif
109	if (!aio_buf) \	97
110	return -1;	98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
111		102
112	typedef SV SV8; /* byte-sv, used for argument-checking */	103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	STRLEN stroffset; \
		113	SV *self;
		114
		115	#define EIO_NO_WRAPPERS 1
		116
		117	#include "libeio/config.h"
		118	#include "libeio/eio.h"
		119
		120	static int req_invoke (eio_req *req);
		121	#define EIO_FINISH(req) req_invoke (req)
		122	static void req_destroy (eio_req *grp);
		123	#define EIO_DESTROY(req) req_destroy (req)
		124
		125	#include "libeio/eio.c"
		126
		127	/* Linux/others */
		128	#ifndef O_ASYNC
		129	# define O_ASYNC 0
		130	#endif
		131	#ifndef O_DIRECT
		132	# define O_DIRECT 0
		133	#endif
		134	#ifndef O_NOATIME
		135	# define O_NOATIME 0
		136	#endif
		137
		138	/* POSIX */
		139	#ifndef O_CLOEXEC
		140	# define O_CLOEXEC 0
		141	#endif
		142	#ifndef O_NOFOLLOW
		143	# define O_NOFOLLOW 0
		144	#endif
		145	#ifndef O_NOCTTY
		146	# define O_NOCTTY 0
		147	#endif
		148	#ifndef O_NONBLOCK
		149	# define O_NONBLOCK 0
		150	#endif
		151	#ifndef O_EXEC
		152	# define O_EXEC 0
		153	#endif
		154	#ifndef O_SEARCH
		155	# define O_SEARCH 0
		156	#endif
		157	#ifndef O_DIRECTORY
		158	# define O_DIRECTORY 0
		159	#endif
		160	#ifndef O_DSYNC
		161	# define O_DSYNC 0
		162	#endif
		163	#ifndef O_RSYNC
		164	# define O_RSYNC 0
		165	#endif
		166	#ifndef O_SYNC
		167	# define O_SYNC 0
		168	#endif
		169	#ifndef O_TTY_INIT
		170	# define O_TTY_INIT 0
		171	#endif
		172
		173	#ifndef POSIX_FADV_NORMAL
		174	# define POSIX_FADV_NORMAL 0
		175	#endif
		176	#ifndef POSIX_FADV_SEQUENTIAL
		177	# define POSIX_FADV_SEQUENTIAL 0
		178	#endif
		179	#ifndef POSIX_FADV_RANDOM
		180	# define POSIX_FADV_RANDOM 0
		181	#endif
		182	#ifndef POSIX_FADV_NOREUSE
		183	# define POSIX_FADV_NOREUSE 0
		184	#endif
		185	#ifndef POSIX_FADV_WILLNEED
		186	# define POSIX_FADV_WILLNEED 0
		187	#endif
		188	#ifndef POSIX_FADV_DONTNEED
		189	# define POSIX_FADV_DONTNEED 0
		190	#endif
		191
		192	#if !HAVE_POSIX_FADVISE
		193	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		194	#endif
		195
		196	#ifndef POSIX_MADV_NORMAL
		197	# define POSIX_MADV_NORMAL 0
		198	#endif
		199	#ifndef POSIX_MADV_SEQUENTIAL
		200	# define POSIX_MADV_SEQUENTIAL 0
		201	#endif
		202	#ifndef POSIX_MADV_RANDOM
		203	# define POSIX_MADV_RANDOM 0
		204	#endif
		205	#ifndef POSIX_MADV_WILLNEED
		206	# define POSIX_MADV_WILLNEED 0
		207	#endif
		208	#ifndef POSIX_MADV_DONTNEED
		209	# define POSIX_MADV_DONTNEED 0
		210	#endif
		211
		212	#if !HAVE_POSIX_MADVISE
		213	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		214	#endif
		215
		216	#ifndef PROT_NONE
		217	# define PROT_NONE 0
		218	#endif
		219	#ifndef PROT_READ
		220	# define PROT_READ 0
		221	#endif
		222	#ifndef PROT_WRITE
		223	# define PROT_READ 0
		224	#endif
		225	#ifndef PROT_EXEC
		226	# define PROT_EXEC 0
		227	#endif
		228
		229	#ifndef ST_RDONLY
		230	# define ST_RDONLY 0
		231	#endif
		232	#ifndef ST_NOSUID
		233	# define ST_NOSUID 0
		234	#endif
		235	#ifndef ST_NODEV
		236	# define ST_NODEV 0
		237	#endif
		238	#ifndef ST_NOEXEC
		239	# define ST_NOEXEC 0
		240	#endif
		241	#ifndef ST_SYNCHRONOUS
		242	# define ST_SYNCHRONOUS 0
		243	#endif
		244	#ifndef ST_MANDLOCK
		245	# define ST_MANDLOCK 0
		246	#endif
		247	#ifndef ST_WRITE
		248	# define ST_WRITE 0
		249	#endif
		250	#ifndef ST_APPEND
		251	# define ST_APPEND 0
		252	#endif
		253	#ifndef ST_IMMUTABLE
		254	# define ST_IMMUTABLE 0
		255	#endif
		256	#ifndef ST_NOATIME
		257	# define ST_NOATIME 0
		258	#endif
		259	#ifndef ST_NODIRATIME
		260	# define ST_NODIRATIME 0
		261	#endif
		262	#ifndef ST_RELATIME
		263	# define ST_RELATIME 0
		264	#endif
		265
		266	#ifndef S_IFIFO
		267	# define S_IFIFO 0
		268	#endif
		269	#ifndef S_IFCHR
		270	# define S_IFCHR 0
		271	#endif
		272	#ifndef S_IFBLK
		273	# define S_IFBLK 0
		274	#endif
		275	#ifndef S_IFLNK
		276	# define S_IFLNK 0
		277	#endif
		278	#ifndef S_IFREG
		279	# define S_IFREG 0
		280	#endif
		281	#ifndef S_IFDIR
		282	# define S_IFDIR 0
		283	#endif
		284	#ifndef S_IFWHT
		285	# define S_IFWHT 0
		286	#endif
		287	#ifndef S_IFSOCK
		288	# define S_IFSOCK 0
		289	#endif
		290
		291	#ifndef MAP_ANONYMOUS
		292	# ifdef MAP_ANON
		293	# define MAP_ANONYMOUS MAP_ANON
		294	# else
		295	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		296	# endif
		297	#endif
		298	#ifndef MAP_HUGETLB
		299	# define MAP_HUGETLB 0
		300	#endif
		301	#ifndef MAP_LOCKED
		302	# define MAP_LOCKED 0
		303	#endif
		304	#ifndef MAP_NORESERVE
		305	# define MAP_NORESERVE 0
		306	#endif
		307	#ifndef MAP_POPULATE
		308	# define MAP_POPULATE 0
		309	#endif
		310	#ifndef MAP_NONBLOCK
		311	# define MAP_NONBLOCK 0
		312	#endif
		313
		314	#ifndef makedev
		315	# define makedev(maj,min) (((maj) << 8) | (min))
		316	#endif
		317	#ifndef major
		318	# define major(dev) ((dev) >> 8)
		319	#endif
		320	#ifndef minor
		321	# define minor(dev) ((dev) & 0xff)
		322	#endif
		323
		324	#ifndef PAGESIZE
		325	# define PAGESIZE sysconf (_SC_PAGESIZE)
		326	#endif
113		327
114	enum {	328	enum {
115	REQ_QUIT,	329	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_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	};	330	};
131		331
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;	332	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
168		334
169	enum {	335	static SV *on_next_submit;
170	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	337	static int max_outstanding;
172		338
173	DEFAULT_PRI = 0,	339	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		340
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 ()
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 ()
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 ()
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 ()
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 ()
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 ();
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	341	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
378		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
379	/* must be called at most once */	356	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
381	{	358	{
382	if (!req->self)	359	if (!req->self)
383	{	360	{
384	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	363	}
387		364
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	366	}
390		367
391	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
392	{	369	{
393	MAGIC *mg;	370	MAGIC *mg;
394		371
395	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")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
397		377
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		379
400	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	381	}
402		382
403	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
404	{	384	{
405	block_sig ();	385	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	386	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	387	dSP;
414		388
415	ENTER;	389	ENTER;
416	SAVETMPS;	390	SAVETMPS;
417	PUSHMARK (SP);	391	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	393	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	395	SPAGAIN;
422	FREETMPS;	396	FREETMPS;
423	LEAVE;	397	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	}	398	}
434
435	unblock_sig ();
436	}	399	}
437		400
438	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
439	{	402	{
440	--grp->size;	403	eio_submit (req);
441		404
442	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	406	{
448	block_sig ();	407	dSP;
		408	SV *cb = sv_2mortal (on_next_submit);
449		409
450	if (!req_invoke (grp))	410	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		411
457	req_destroy (grp);	412	PUSHMARK (SP);
458	unblock_sig ();	413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
459	}	415	}
460	}	416	}
461		417
462	static int req_invoke (aio_req req)	418	static int req_invoke (eio_req *req)
463	{	419	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	420	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	421	SvREADONLY_off (req->sv2);
468		422
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	423	if (!EIO_CANCELLED (req) && req->callback)
470	{	424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
471	ENTER;	429	ENTER;
472	SAVETMPS;	430	SAVETMPS;
473	PUSHMARK (SP);	431	PUSHMARK (SP);
474	EXTEND (SP, 1);	432	EXTEND (SP, 1);
475		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
476	switch (req->type)	447	switch (req->type)
477	{	448	{
478	case REQ_READDIR:	449	case EIO_READDIR:
479	{	450	{
480	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
481		452
482	if (req->result >= 0)	453	if (req->result >= 0)
483	{	454	{
484	int i;	455	int i;
485	char *buf = req->ptr2;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	458	AV *av = newAV ();
487		459
488	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
489		461
490	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
491	{	463	{
492	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		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
494	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);
495	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
496	}	498	}
497		499
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	501	}
500		502
501	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))));
502	}	507	}
503	break;	508	break;
504		509
505	case REQ_OPEN:	510	case EIO_OPEN:
506	{	511	{
507	/* convert fd to fh */	512	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	513	SV *fh = &PL_sv_undef;
509		514
510	if (req->result >= 0)	515	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	517	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	519	char sym [64];
515	int symlen;	520	int symlen;
516		521
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	523	gv_init (gv, aio_stash, sym, symlen, 0);
519		524
520	symlen = snprintf (	525	symlen = snprintf (
521	sym,	526	sym,
522	sizeof (sym),	527	sizeof (sym),
523	"%s&=%d",	528	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	530	(int)req->result
526	);	531	);
527		532
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	534	fh = (SV *)gv;
530	}	535	}
531		536
532	XPUSHs (fh);	537	PUSHs (fh);
533	}	538	}
534	break;	539	break;
535		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	#ifndef _WIN32
		547	if (req->result >= 0)
		548	{
		549	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		550	HV *hv = newHV ();
		551
		552	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		553
		554	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		555	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		556	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		557	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		558	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		559	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		560	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		561	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		562	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		563	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		564	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		565	}
		566	#endif
		567
		568	PUSHs (rv);
		569	}
		570
		571	break;
		572
536	case REQ_GROUP:	573	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	574	req->int1 = 2; /* mark group as finished */
538		575
539	if (req->sv1)	576	if (req->sv1)
540	{	577	{
541	int i;	578	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	582	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	583	PUSHs (*av_fetch (av, i, 0));
547	}	584	}
548	break;	585	break;
549		586
550	case REQ_NOP:	587	case EIO_NOP:
551	case REQ_BUSY:	588	case EIO_BUSY:
552	break;	589	break;
553		590
554	case REQ_READLINK:	591	case EIO_READLINK:
		592	case EIO_REALPATH:
555	if (req->result > 0)	593	if (req->result > 0)
556	{	594	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;	595	break;
562		596
563	case REQ_STAT:	597	case EIO_STAT:
564	case REQ_LSTAT:	598	case EIO_LSTAT:
565	case REQ_FSTAT:	599	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	600	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	601	PL_laststatval = req->result;
		602	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
568	PL_statcache = *(Stat_t *)(req->ptr2);	603	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	604	PUSHs (sv_result);
570	break;	605	break;
571		606
572	case REQ_READ:	607	case EIO_READ:
		608	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	609	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	610	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	611	SvPOK_only (req->sv2);
		612	SvSETMAGIC (req->sv2);
		613	PUSHs (sv_result);
		614	}
576	break;	615	break;
577		616
		617	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		618	if (req->result > 0)
		619	SvIV_set (sv_result, 0);
		620	/* FALLTHROUGH */
		621
578	default:	622	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	623	PUSHs (sv_result);
580	break;	624	break;
581	}	625	}
582		626
583	errno = req->errorno;	627	errno = req->errorno;
584		628
585	PUTBACK;	629	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL);	630	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	631	SPAGAIN;
		632
		633	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		634	SvREFCNT_dec (sv_result);
		635	else
		636	sv_result_cache = sv_result;
588		637
589	FREETMPS;	638	FREETMPS;
590	LEAVE;	639	LEAVE;
		640
		641	PUTBACK;
591	}	642	}
592		643
593	if (req->grp)
594	{
595	aio_req grp = req->grp;
596
597	/* unlink request */
598	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
599	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
600
601	if (grp->grp_first == req)
602	grp->grp_first = req->grp_next;
603
604	aio_grp_dec (grp);
605	}
606
607	return !SvTRUE (ERRSV);	644	return !!SvTRUE (ERRSV);
608	}	645	}
609		646
610	static void req_destroy (aio_req req)	647	static void req_destroy (aio_req req)
611	{	648	{
612	if (req->self)	649	if (req->self)
…		…
617		654
618	SvREFCNT_dec (req->sv1);	655	SvREFCNT_dec (req->sv1);
619	SvREFCNT_dec (req->sv2);	656	SvREFCNT_dec (req->sv2);
620	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
621		658
622	if (req->flags & FLAG_PTR2_FREE)
623	free (req->ptr2);
624
625	Safefree (req);	659	Safefree (req);
626	}	660	}
627		661
628	static void req_cancel_subs (aio_req grp)	662	static void req_cancel_subs (aio_req grp)
629	{	663	{
630	aio_req sub;
631
632	if (grp->type != REQ_GROUP)	664	if (grp->type != EIO_GROUP)
633	return;	665	return;
634		666
635	SvREFCNT_dec (grp->sv2);	667	SvREFCNT_dec (grp->sv2);
636	grp->sv2 = 0;	668	grp->sv2 = 0;
637		669
638	for (sub = grp->grp_first; sub; sub = sub->grp_next)	670	eio_grp_cancel (grp);
639	req_cancel (sub);
640	}	671	}
641		672
642	static void req_cancel (aio_req req)	673	static void create_respipe (void)
643	{	674	{
644	req->flags |= FLAG_CANCELLED;
645
646	req_cancel_subs (req);
647	}
648
649	#ifdef USE_SOCKETS_AS_HANDLES
650	# define TO_SOCKET(x) (win32_get_osfhandle (x))
651	#else
652	# define TO_SOCKET(x) (x)
653	#endif
654
655	static void
656	create_respipe ()
657	{
658	int old_readfd = respipe [0];
659
660	if (respipe [1] >= 0)
661	respipe_close (TO_SOCKET (respipe [1]));
662
663	#ifdef _WIN32
664	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
665	#else
666	if (pipe (respipe))	675	if (s_epipe_renew (&respipe))
667	#endif
668	croak ("unable to initialize result pipe");	676	croak ("IO::AIO: unable to initialize result pipe");
669
670	if (old_readfd >= 0)
671	{
672	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
673	croak ("unable to initialize result pipe(2)");
674
675	respipe_close (respipe [0]);
676	respipe [0] = old_readfd;
677	}
678
679	#ifdef _WIN32
680	int arg = 1;
681	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
682	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
683	#else
684	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
685	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
686	#endif
687	croak ("unable to initialize result pipe(3)");
688
689	respipe_osf [0] = TO_SOCKET (respipe [0]);
690	respipe_osf [1] = TO_SOCKET (respipe [1]);
691	}	677	}
692		678
693	X_THREAD_PROC (aio_proc);
694
695	static void start_thread (void)
696	{
697	worker *wrk = calloc (1, sizeof (worker));
698
699	if (!wrk)
700	croak ("unable to allocate worker thread data");
701
702	X_LOCK (wrklock);
703
704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
705	{
706	wrk->prev = &wrk_first;
707	wrk->next = wrk_first.next;
708	wrk_first.next->prev = wrk;
709	wrk_first.next = wrk;
710	++started;
711	}
712	else
713	free (wrk);
714
715	X_UNLOCK (wrklock);
716	}
717
718	static void maybe_start_thread ()
719	{
720	if (get_nthreads () >= wanted)
721	return;
722
723	/* todo: maybe use idle here, but might be less exact */
724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
725	return;
726
727	start_thread ();
728	}
729
730	static void req_send (aio_req req)
731	{
732	block_sig ();
733
734	++nreqs;
735
736	X_LOCK (reqlock);
737	++nready;
738	reqq_push (&req_queue, req);
739	X_COND_SIGNAL (reqwait);
740	X_UNLOCK (reqlock);
741
742	unblock_sig ();
743
744	maybe_start_thread ();
745	}
746
747	static void end_thread (void)
748	{
749	aio_req req;
750
751	Newz (0, req, 1, aio_cb);
752
753	req->type = REQ_QUIT;
754	req->pri = PRI_MAX + PRI_BIAS;
755
756	X_LOCK (reqlock);
757	reqq_push (&req_queue, req);
758	X_COND_SIGNAL (reqwait);
759	X_UNLOCK (reqlock);
760
761	X_LOCK (wrklock);
762	--started;
763	X_UNLOCK (wrklock);
764	}
765
766	static void set_max_idle (int nthreads)
767	{
768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
769	max_idle = nthreads <= 0 ? 1 : nthreads;
770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
771	}
772
773	static void min_parallel (int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void max_parallel (int nthreads)
780	{
781	if (wanted > nthreads)
782	wanted = nthreads;
783
784	while (started > wanted)
785	end_thread ();
786	}
787
788	static void poll_wait ()	679	static void poll_wait (void)
789	{	680	{
790	fd_set rfd;
791
792	while (nreqs)	681	while (eio_nreqs ())
793	{	682	{
794	int size;	683	int size;
795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	684
		685	X_LOCK (reslock);
796	size = res_queue.size;	686	size = res_queue.size;
797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	687	X_UNLOCK (reslock);
798		688
799	if (size)	689	if (size)
800	return;	690	return;
801		691
802	maybe_start_thread ();	692	etp_maybe_start_thread ();
803		693
804	FD_ZERO (&rfd);	694	s_epipe_wait (&respipe);
805	FD_SET (respipe [0], &rfd);
806
807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
808	}	695	}
809	}	696	}
810		697
811	static int poll_cb ()	698	static int poll_cb (void)
812	{	699	{
813	dSP;
814	int count = 0;
815	int maxreqs = max_poll_reqs;
816	int do_croak = 0;
817	struct timeval tv_start, tv_now;
818	aio_req req;
819
820	if (max_poll_time)
821	gettimeofday (&tv_start, 0);
822
823	block_sig ();
824
825	for (;;)	700	for (;;)
826	{	701	{
827	for (;;)	702	int res = eio_poll ();
828	{
829	maybe_start_thread ();
830		703
831	X_LOCK (reslock);	704	if (res > 0)
832	req = reqq_shift (&res_queue);
833
834	if (req)
835	{
836	--npending;
837
838	if (!res_queue.size)
839	{
840	/* read any signals sent by the worker threads */
841	char buf [4];
842	while (respipe_read (respipe [0], buf, 4) == 4)
843	;
844	}
845	}
846
847	X_UNLOCK (reslock);
848
849	if (!req)
850	break;
851
852	--nreqs;
853
854	if (req->type == REQ_GROUP && req->size)
855	{
856	req->int1 = 1; /* mark request as delayed */
857	continue;
858	}
859	else
860	{
861	if (!req_invoke (req))
862	{
863	req_destroy (req);
864	unblock_sig ();
865	croak (0);	705	croak (0);
866	}
867		706
868	count++;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
869	}	708	return res;
870
871	req_destroy (req);
872
873	if (maxreqs && !--maxreqs)
874	break;
875
876	if (max_poll_time)
877	{
878	gettimeofday (&tv_now, 0);
879
880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
881	break;
882	}
883	}
884
885	if (nreqs <= max_outstanding)
886	break;
887		709
888	poll_wait ();	710	poll_wait ();
889
890	++maxreqs;
891	}	711	}
		712	}
892		713
893	unblock_sig ();	714	static void ecb_cold
894	return count;	715	atfork_child (void)
		716	{
		717	create_respipe ();
		718
		719	if (eio_init (want_poll, done_poll) < 0)
		720	croak ("IO::AIO: unable to initialise eio library");
895	}	721	}
896		722
897	/*****************************************************************************/	723	/*****************************************************************************/
898	/* work around various missing functions */
899		724
900	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
901	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
902	# define pwrite aio_pwrite	727	# define munmap(addr,length) (errno = ENOSYS, -1)
903
904	/*
905	* make our pread/pwrite safe against themselves, but not against
906	* normal read/write by using a mutex. slows down execution a lot,
907	* but that's your problem, not mine.
908	*/
909	static mutex_t preadwritelock = X_MUTEX_INIT;
910
911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
912	{
913	ssize_t res;
914	off_t ooffset;
915
916	X_LOCK (preadwritelock);
917	ooffset = lseek (fd, 0, SEEK_CUR);
918	lseek (fd, offset, SEEK_SET);
919	res = read (fd, buf, count);
920	lseek (fd, ooffset, SEEK_SET);
921	X_UNLOCK (preadwritelock);
922
923	return res;
924	}
925
926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
927	{
928	ssize_t res;
929	off_t ooffset;
930
931	X_LOCK (preadwritelock);
932	ooffset = lseek (fd, 0, SEEK_CUR);
933	lseek (fd, offset, SEEK_SET);
934	res = write (fd, buf, count);
935	lseek (fd, offset, SEEK_SET);
936	X_UNLOCK (preadwritelock);
937
938	return res;
939	}
940	#endif
941
942	#ifndef HAVE_FUTIMES
943
944	# define utimes(path,times) aio_utimes (path, times)
945	# define futimes(fd,times) aio_futimes (fd, times)
946
947	int aio_utimes (const char *filename, const struct timeval times[2])
948	{
949	if (times)
950	{
951	struct utimbuf buf;
952
953	buf.actime = times[0].tv_sec;
954	buf.modtime = times[1].tv_sec;
955
956	return utime (filename, &buf);
957	}
958	else
959	return utime (filename, 0);
960	}
961
962	int aio_futimes (int fd, const struct timeval tv[2])
963	{
964	errno = ENOSYS;
965	return -1;
966	}
967
968	#endif
969
970	#if !HAVE_FDATASYNC
971	# define fdatasync fsync
972	#endif
973
974	#if !HAVE_READAHEAD
975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
976
977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
978	{
979	size_t todo = count;
980	dBUF;
981
982	while (todo > 0)
983	{
984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
985
986	pread (fd, aio_buf, len, offset);
987	offset += len;
988	todo -= len;
989	}
990
991	errno = 0;
992	return count;
993	}
994
995	#endif
996
997	#if !HAVE_READDIR_R
998	# define readdir_r aio_readdir_r
999
1000	static mutex_t readdirlock = X_MUTEX_INIT;
1001
1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1003	{
1004	X_DIRENT *e;
1005	int errorno;
1006
1007	X_LOCK (readdirlock);
1008
1009	e = readdir (dirp);
1010	errorno = errno;
1011
1012	if (e)
1013	{
1014	*res = ent;
1015	strcpy (ent->d_name, e->d_name);
1016	}
1017	else
1018	*res = 0;
1019
1020	X_UNLOCK (readdirlock);
1021
1022	errno = errorno;
1023	return e ? 0 : -1;
1024	}
1025	#endif
1026
1027	/* sendfile always needs emulation */
1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1029	{
1030	ssize_t res;
1031
1032	if (!count)
1033	return 0;
1034
1035	#if HAVE_SENDFILE
1036	# if __linux
1037	res = sendfile (ofd, ifd, &offset, count);
1038
1039	# elif __freebsd
1040	/*
1041	* Of course, the freebsd sendfile is a dire hack with no thoughts
1042	* wasted on making it similar to other I/O functions.
1043	*/
1044	{
1045	off_t sbytes;
1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1047
1048	if (res < 0 && sbytes)
1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1050	res = sbytes;
1051	}
1052
1053	# elif __hpux
1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
1055
1056	# elif __solaris
1057	{
1058	struct sendfilevec vec;
1059	size_t sbytes;
1060
1061	vec.sfv_fd = ifd;
1062	vec.sfv_flag = 0;
1063	vec.sfv_off = offset;
1064	vec.sfv_len = count;
1065
1066	res = sendfilev (ofd, &vec, 1, &sbytes);
1067
1068	if (res < 0 && sbytes)
1069	res = sbytes;
1070	}
1071
1072	# endif	728	#endif
1073	#else
1074	res = -1;
1075	errno = ENOSYS;
1076	#endif
1077		729
1078	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
1079	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1080	#if __solaris	732	# define PROT_NONE 0
1081	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
1082	#endif	737	#endif
1083	)
1084	)
1085	{
1086	/* emulate sendfile. this is a major pain in the ass */
1087	dBUF;
1088		738
1089	res = 0;	739	#define MMAP_MAGIC PERL_MAGIC_ext
1090		740
1091	while (count)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
1092	{	742	{
1093	ssize_t cnt;	743	int old_errno = errno;
1094		744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	745	errno = old_errno;
1096		746
1097	if (cnt <= 0)	747	mg->mg_obj = 0; /* just in case */
1098	{
1099	if (cnt && !res) res = -1;
1100	break;
1101	}
1102		748
1103	cnt = write (ofd, aio_buf, cnt);	749	SvREADONLY_off (sv);
1104		750
1105	if (cnt <= 0)	751	if (SvPVX (sv) != mg->mg_ptr)
1106	{	752	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1107	if (cnt && !res) res = -1;
1108	break;
1109	}
1110		753
1111	offset += cnt;	754	SvCUR_set (sv, 0);
1112	res += cnt;	755	SvPVX (sv) = 0;
1113	count -= cnt;	756	SvOK_off (sv);
1114	}
1115	}
1116		757
1117	return res;	758	return 0;
1118	}	759	}
1119		760
1120	/* read a full directory */	761	static MGVTBL mmap_vtbl = {
1121	static void scandir_ (aio_req req, worker *self)	762	0, 0, 0, 0, mmap_free
1122	{	763	};
1123	DIR *dirp;
1124	union
1125	{
1126	X_DIRENT d;
1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1128	} *u;
1129	X_DIRENT *entp;
1130	char *name, *names;
1131	int memlen = 4096;
1132	int memofs = 0;
1133	int res = 0;
1134
1135	X_LOCK (wrklock);
1136	self->dirp = dirp = opendir (req->ptr1);
1137	self->dbuf = u = malloc (sizeof (*u));
1138	req->flags |= FLAG_PTR2_FREE;
1139	req->ptr2 = names = malloc (memlen);
1140	X_UNLOCK (wrklock);
1141
1142	if (dirp && u && names)
1143	for (;;)
1144	{
1145	errno = 0;
1146	readdir_r (dirp, &u->d, &entp);
1147
1148	if (!entp)
1149	break;
1150
1151	name = entp->d_name;
1152
1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1154	{
1155	int len = strlen (name) + 1;
1156
1157	res++;
1158
1159	while (memofs + len > memlen)
1160	{
1161	memlen *= 2;
1162	X_LOCK (wrklock);
1163	req->ptr2 = names = realloc (names, memlen);
1164	X_UNLOCK (wrklock);
1165
1166	if (!names)
1167	break;
1168	}
1169
1170	memcpy (names + memofs, name, len);
1171	memofs += len;
1172	}
1173	}
1174
1175	if (errno)
1176	res = -1;
1177
1178	req->result = res;
1179	}
1180		764
1181	/*****************************************************************************/	765	/*****************************************************************************/
1182		766
1183	X_THREAD_PROC (aio_proc)	767	static SV * get_cb (SV *cb_sv)
1184	{	768	{
1185	{//D	769	SvGETMAGIC (cb_sv);
1186	aio_req req;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1187	struct timespec ts;
1188	worker *self = (worker *)thr_arg;
1189
1190	/* try to distribute timeouts somewhat randomly */
1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1192
1193	for (;;)
1194	{
1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1196
1197	X_LOCK (reqlock);
1198
1199	for (;;)
1200	{
1201	self->req = req = reqq_shift (&req_queue);
1202
1203	if (req)
1204	break;
1205
1206	++idle;
1207
1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1209	== ETIMEDOUT)
1210	{
1211	if (idle > max_idle)
1212	{
1213	--idle;
1214	X_UNLOCK (reqlock);
1215	X_LOCK (wrklock);
1216	--started;
1217	X_UNLOCK (wrklock);
1218	goto quit;
1219	}
1220
1221	/* we are allowed to idle, so do so without any timeout */
1222	X_COND_WAIT (reqwait, reqlock);
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224	}
1225
1226	--idle;
1227	}
1228
1229	--nready;
1230
1231	X_UNLOCK (reqlock);
1232
1233	errno = 0; /* strictly unnecessary */
1234
1235	if (!(req->flags & FLAG_CANCELLED))
1236	switch (req->type)
1237	{
1238	case REQ_READ: req->result = req->offs >= 0
1239	? pread (req->int1, req->ptr1, req->size, req->offs)
1240	: read (req->int1, req->ptr1, req->size); break;
1241	case REQ_WRITE: req->result = req->offs >= 0
1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1243	: write (req->int1, req->ptr1, req->size); break;
1244
1245	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1247
1248	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1249	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1251
1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1258
1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1269
1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
1272	case REQ_READDIR: scandir_ (req, self); break;
1273
1274	case REQ_BUSY:
1275	#ifdef _WIN32
1276	Sleep (req->nv1 * 1000.);
1277	#else
1278	{
1279	struct timeval tv;
1280
1281	tv.tv_sec = req->nv1;
1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1283
1284	req->result = select (0, 0, 0, 0, &tv);
1285	}
1286	#endif
1287	break;
1288
1289	case REQ_UTIME:
1290	case REQ_FUTIME:
1291	{
1292	struct timeval tv[2];
1293	struct timeval *times;
1294
1295	if (req->nv1 != -1. || req->nv2 != -1.)
1296	{
1297	tv[0].tv_sec = req->nv1;
1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1299	tv[1].tv_sec = req->nv2;
1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1301
1302	times = tv;
1303	}
1304	else
1305	times = 0;
1306
1307
1308	req->result = req->type == REQ_FUTIME
1309	? futimes (req->int1, times)
1310	: utimes (req->ptr1, times);
1311	}
1312
1313	case REQ_GROUP:
1314	case REQ_NOP:
1315	break;
1316
1317	case REQ_QUIT:
1318	goto quit;
1319
1320	default:
1321	req->result = -1;
1322	break;
1323	}
1324
1325	req->errorno = errno;
1326
1327	X_LOCK (reslock);
1328
1329	++npending;
1330
1331	if (!reqq_push (&res_queue, req))
1332	{
1333	/* write a dummy byte to the pipe so fh becomes ready */
1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1335
1336	/* optionally signal the main thread asynchronously */
1337	if (main_sig)
1338	pthread_kill (main_tid, main_sig);
1339	}
1340
1341	self->req = 0;
1342	worker_clear (self);
1343
1344	X_UNLOCK (reslock);
1345	}
1346
1347	quit:
1348	X_LOCK (wrklock);
1349	worker_free (self);
1350	X_UNLOCK (wrklock);
1351
1352	return 0;
1353	}//D
1354	}
1355
1356	/*****************************************************************************/
1357
1358	static void atfork_prepare (void)
1359	{
1360	X_LOCK (wrklock);
1361	X_LOCK (reqlock);
1362	X_LOCK (reslock);
1363	#if !HAVE_PREADWRITE
1364	X_LOCK (preadwritelock);
1365	#endif
1366	#if !HAVE_READDIR_R
1367	X_LOCK (readdirlock);
1368	#endif
1369	}
1370
1371	static void atfork_parent (void)
1372	{
1373	#if !HAVE_READDIR_R
1374	X_UNLOCK (readdirlock);
1375	#endif
1376	#if !HAVE_PREADWRITE
1377	X_UNLOCK (preadwritelock);
1378	#endif
1379	X_UNLOCK (reslock);
1380	X_UNLOCK (reqlock);
1381	X_UNLOCK (wrklock);
1382	}
1383
1384	static void atfork_child (void)
1385	{
1386	aio_req prv;
1387
1388	while (prv = reqq_shift (&req_queue))
1389	req_destroy (prv);
1390
1391	while (prv = reqq_shift (&res_queue))
1392	req_destroy (prv);
1393
1394	while (wrk_first.next != &wrk_first)
1395	{
1396	worker *wrk = wrk_first.next;
1397
1398	if (wrk->req)
1399	req_destroy (wrk->req);
1400
1401	worker_clear (wrk);
1402	worker_free (wrk);
1403	}
1404
1405	started = 0;
1406	idle = 0;
1407	nreqs = 0;
1408	nready = 0;
1409	npending = 0;
1410
1411	create_respipe ();
1412
1413	atfork_parent ();
1414	}	771	}
1415		772
1416	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
1417	aio_req req; \	775	aio_req req; \
1418	int req_pri = next_pri; \	776	int req_pri = next_pri; \
1419	next_pri = DEFAULT_PRI + PRI_BIAS; \	777	next_pri = EIO_PRI_DEFAULT; \
1420	\	778	\
1421	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
1422	croak ("callback must be undef or of reference type"); \
1423	\	780	\
1424	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
1425	if (!req) \	782	if (!req) \
1426	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
1427	\	784	\
1428	req->callback = newSVsv (callback); \	785	req->callback = SvREFCNT_inc (cb_cv); \
1429	req->pri = req_pri	786	req->pri = req_pri
1430		787
1431	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
1432	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
1433	\	792	\
1434	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
1435	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
1436		795
1437	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
1438		797
1439	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
1440		799
1441	BOOT:	800	BOOT:
1442	{	801	{
		802	static const struct {
		803	const char *name;
		804	IV iv;
		805	} *civ, const_iv[] = {
		806	# define const_niv(name, value) { # name, (IV) value },
		807	# define const_iv(name) { # name, (IV) name },
		808	# define const_eio(name) { # name, (IV) EIO_ ## name },
		809	const_iv (EXDEV)
		810	const_iv (ENOSYS)
		811	const_iv (O_RDONLY)
		812	const_iv (O_WRONLY)
		813	const_iv (O_RDWR)
		814	const_iv (O_CREAT)
		815	const_iv (O_TRUNC)
		816	const_iv (O_EXCL)
		817	const_iv (O_APPEND)
		818
		819	const_iv (O_ASYNC)
		820	const_iv (O_DIRECT)
		821	const_iv (O_NOATIME)
		822
		823	const_iv (O_CLOEXEC)
		824	const_iv (O_NOCTTY)
		825	const_iv (O_NOFOLLOW)
		826	const_iv (O_NONBLOCK)
		827	const_iv (O_EXEC)
		828	const_iv (O_SEARCH)
		829	const_iv (O_DIRECTORY)
		830	const_iv (O_DSYNC)
		831	const_iv (O_RSYNC)
		832	const_iv (O_SYNC)
		833	const_iv (O_TTY_INIT)
		834
		835	const_iv (S_IFIFO)
		836	const_iv (S_IFCHR)
		837	const_iv (S_IFBLK)
		838	const_iv (S_IFLNK)
		839	const_iv (S_IFREG)
		840	const_iv (S_IFDIR)
		841	const_iv (S_IFWHT)
		842	const_iv (S_IFSOCK)
		843	const_iv (S_IFMT)
		844
		845	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		846	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		847	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		848	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		849	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		850	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		851
		852	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		853	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		854	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		855	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		856	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		857
		858	const_iv (ST_RDONLY)
		859	const_iv (ST_NOSUID)
		860	const_iv (ST_NODEV)
		861	const_iv (ST_NOEXEC)
		862	const_iv (ST_SYNCHRONOUS)
		863	const_iv (ST_MANDLOCK)
		864	const_iv (ST_WRITE)
		865	const_iv (ST_APPEND)
		866	const_iv (ST_IMMUTABLE)
		867	const_iv (ST_NOATIME)
		868	const_iv (ST_NODIRATIME)
		869	const_iv (ST_RELATIME)
		870
		871	const_iv (PROT_NONE)
		872	const_iv (PROT_EXEC)
		873	const_iv (PROT_READ)
		874	const_iv (PROT_WRITE)
		875
		876	/*const_iv (MAP_FIXED)*/
		877	const_iv (MAP_PRIVATE)
		878	const_iv (MAP_SHARED)
		879	const_iv (MAP_ANONYMOUS)
		880
		881	/* linuxish */
		882	const_iv (MAP_HUGETLB)
		883	const_iv (MAP_LOCKED)
		884	const_iv (MAP_NORESERVE)
		885	const_iv (MAP_POPULATE)
		886	const_iv (MAP_NONBLOCK)
		887
		888	const_eio (MCL_FUTURE)
		889	const_eio (MCL_CURRENT)
		890
		891	const_eio (MS_ASYNC)
		892	const_eio (MS_INVALIDATE)
		893	const_eio (MS_SYNC)
		894
		895	const_eio (MT_MODIFY)
		896
		897	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		898	const_eio (SYNC_FILE_RANGE_WRITE)
		899	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		900
		901	const_eio (FALLOC_FL_KEEP_SIZE)
		902
		903	const_eio (READDIR_DENTS)
		904	const_eio (READDIR_DIRS_FIRST)
		905	const_eio (READDIR_STAT_ORDER)
		906	const_eio (READDIR_FOUND_UNKNOWN)
		907
		908	const_eio (DT_UNKNOWN)
		909	const_eio (DT_FIFO)
		910	const_eio (DT_CHR)
		911	const_eio (DT_DIR)
		912	const_eio (DT_BLK)
		913	const_eio (DT_REG)
		914	const_eio (DT_LNK)
		915	const_eio (DT_SOCK)
		916	const_eio (DT_WHT)
		917	};
		918
1443	stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
		920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1444		922
1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1450	#ifdef _WIN32
1451	X_MUTEX_CHECK (wrklock);
1452	X_MUTEX_CHECK (reslock);
1453	X_MUTEX_CHECK (reqlock);
1454	X_MUTEX_CHECK (reqwait);
1455	X_MUTEX_CHECK (preadwritelock);
1456	X_MUTEX_CHECK (readdirlock);
1457		925
1458	X_COND_CHECK (reqwait);	926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1459	#else
1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1462	#endif
1463		927
1464	create_respipe ();	928	X_THREAD_ATFORK (0, 0, atfork_child);
1465		929	atfork_child (); /* calls create_respipe and eio_init */
1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1467	}	930	}
1468		931
1469	void	932	void
1470	max_poll_reqs (int nreqs)	933	max_poll_reqs (unsigned int nreqs)
1471	PROTOTYPE: $	934	PROTOTYPE: $
1472	CODE:	935	CODE:
1473	max_poll_reqs = nreqs;	936	eio_set_max_poll_reqs (nreqs);
1474		937
1475	void	938	void
1476	max_poll_time (double nseconds)	939	max_poll_time (double nseconds)
1477	PROTOTYPE: $	940	PROTOTYPE: $
1478	CODE:	941	CODE:
1479	max_poll_time = nseconds * AIO_TICKS;	942	eio_set_max_poll_time (nseconds);
1480		943
1481	void	944	void
1482	min_parallel (int nthreads)	945	min_parallel (unsigned int nthreads)
1483	PROTOTYPE: $
1484
1485	void
1486	max_parallel (int nthreads)
1487	PROTOTYPE: $
1488
1489	void
1490	max_idle (int nthreads)
1491	PROTOTYPE: $	946	PROTOTYPE: $
1492	CODE:	947	CODE:
1493	set_max_idle (nthreads);	948	eio_set_min_parallel (nthreads);
1494		949
1495	int	950	void
1496	max_outstanding (int maxreqs)	951	max_parallel (unsigned int nthreads)
1497	PROTOTYPE: $	952	PROTOTYPE: $
1498	CODE:	953	CODE:
1499	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:
1500	max_outstanding = maxreqs;	972	max_outstanding = maxreqs;
1501	OUTPUT:
1502	RETVAL
1503		973
1504	void	974	void
1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	975	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$;$
1507	PPCODE:	976	PPCODE:
1508	{	977	{
1509	dREQ;	978	dREQ;
1510		979
1511	req->type = REQ_OPEN;	980	req->type = EIO_OPEN;
1512	req->sv1 = newSVsv (pathname);	981	req->sv1 = newSVsv (pathname);
1513	req->ptr1 = SvPVbyte_nolen (req->sv1);	982	req->ptr1 = SvPVbyte_nolen (req->sv1);
1514	req->int1 = flags;	983	req->int1 = flags;
1515	req->mode = mode;	984	req->int2 = mode;
1516		985
1517	REQ_SEND;	986	REQ_SEND;
1518	}	987	}
1519		988
1520	void	989	void
1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	990	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1522	PROTOTYPE: $;$
1523	ALIAS:	991	ALIAS:
1524	aio_fsync = REQ_FSYNC	992	aio_fsync = EIO_FSYNC
1525	aio_fdatasync = REQ_FDATASYNC	993	aio_fdatasync = EIO_FDATASYNC
1526	PPCODE:	994	PPCODE:
1527	{	995	{
		996	int fd = s_fileno_croak (fh, 0);
1528	dREQ;	997	dREQ;
1529		998
1530	req->type = ix;	999	req->type = ix;
1531	req->sv1 = newSVsv (fh);	1000	req->sv1 = newSVsv (fh);
1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1001	req->int1 = fd;
1533		1002
1534	REQ_SEND (req);	1003	REQ_SEND (req);
1535	}	1004	}
1536		1005
1537	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_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1025	PPCODE:
		1026	{
		1027	int fd = s_fileno_croak (fh, 0);
		1028	dREQ;
		1029
		1030	req->type = EIO_FALLOCATE;
		1031	req->sv1 = newSVsv (fh);
		1032	req->int1 = fd;
		1033	req->int2 = mode;
		1034	req->offs = offset;
		1035	req->size = len;
		1036
		1037	REQ_SEND (req);
		1038	}
		1039
		1040	void
1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1041	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $;$
1540	PPCODE:	1042	PPCODE:
1541	{	1043	{
1542	PerlIO *io = IoIFP (sv_2io (fh));	1044	static int close_fd = -1; /* dummy fd to close fds via dup2 */
1543	int fd = PerlIO_fileno (io);	1045	int fd = s_fileno_croak (fh, 0);
1544
1545	if (fd < 0)
1546	croak ("aio_close called with fd-less filehandle");
1547
1548	PerlIO_binmode (aTHX_ io, 0, 0, 0);
1549
1550	{
1551	dREQ;	1046	dREQ;
1552		1047
		1048	if (expect_false (close_fd < 0))
		1049	{
		1050	int pipefd [2];
		1051
		1052	if (
		1053	#ifdef _WIN32
		1054	_pipe (pipefd, 1, _O_BINARY) < 0
		1055	#else
		1056	pipe (pipefd) < 0
		1057	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1058	#endif
		1059	|| close (pipefd [1]) < 0
		1060	)
		1061	abort (); /*D*/
		1062
		1063	close_fd = pipefd [0];
		1064	}
		1065
1553	req->type = REQ_CLOSE;	1066	req->type = EIO_DUP2;
		1067	req->int1 = close_fd;
1554	req->sv1 = newSVsv (fh);	1068	req->sv2 = newSVsv (fh);
1555	req->ptr1 = (void *)io;	1069	req->int2 = fd;
1556		1070
1557	REQ_SEND (req);	1071	REQ_SEND (req);
1558	}
1559	}	1072	}
1560		1073
1561	void	1074	void
1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1075	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1563	ALIAS:	1076	ALIAS:
1564	aio_read = REQ_READ	1077	aio_read = EIO_READ
1565	aio_write = REQ_WRITE	1078	aio_write = EIO_WRITE
1566	PROTOTYPE: $$$$$;$
1567	PPCODE:	1079	PPCODE:
1568	{	1080	{
1569	STRLEN svlen;	1081	STRLEN svlen;
		1082	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1570	char *svptr = SvPVbyte (data, svlen);	1083	char *svptr = SvPVbyte (data, svlen);
1571	UV len = SvUV (length);	1084	UV len = SvUV (length);
1572		1085
1573	SvUPGRADE (data, SVt_PV);
1574	SvPOK_on (data);
1575
1576	if (dataoffset < 0)	1086	if (dataoffset < 0)
1577	dataoffset += svlen;	1087	dataoffset += svlen;
1578		1088
1579	if (dataoffset < 0 || dataoffset > svlen)	1089	if (dataoffset < 0 || dataoffset > svlen)
1580	croak ("dataoffset outside of data scalar");	1090	croak ("dataoffset outside of data scalar");
1581		1091
1582	if (ix == REQ_WRITE)	1092	if (ix == EIO_WRITE)
1583	{	1093	{
1584	/* write: check length and adjust. */	1094	/* write: check length and adjust. */
1585	if (!SvOK (length) || len + dataoffset > svlen)	1095	if (!SvOK (length) || len + dataoffset > svlen)
1586	len = svlen - dataoffset;	1096	len = svlen - dataoffset;
1587	}	1097	}
1588	else	1098	else
1589	{	1099	{
1590	/* read: grow scalar as necessary */	1100	/* read: check type and grow scalar as necessary */
		1101	SvUPGRADE (data, SVt_PV);
1591	svptr = SvGROW (data, len + dataoffset + 1);	1102	svptr = SvGROW (data, len + dataoffset + 1);
1592	}	1103	}
1593		1104
1594	if (len < 0)
1595	croak ("length must not be negative");
1596
1597	{	1105	{
1598	dREQ;	1106	dREQ;
1599		1107
1600	req->type = ix;	1108	req->type = ix;
1601	req->sv1 = newSVsv (fh);	1109	req->sv1 = newSVsv (fh);
1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1110	req->int1 = fd;
1603	: IoOFP (sv_2io (fh)));
1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1111	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1605	req->size = len;	1112	req->size = len;
1606	req->sv2 = SvREFCNT_inc (data);	1113	req->sv2 = SvREFCNT_inc (data);
1607	req->ptr1 = (char *)svptr + dataoffset;	1114	req->ptr2 = (char *)svptr + dataoffset;
1608	req->stroffset = dataoffset;	1115	req->stroffset = dataoffset;
1609		1116
1610	if (!SvREADONLY (data))	1117	if (!SvREADONLY (data))
1611	{	1118	{
1612	SvREADONLY_on (data);	1119	SvREADONLY_on (data);
…		…
1617	}	1124	}
1618	}	1125	}
1619		1126
1620	void	1127	void
1621	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1128	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1622	PROTOTYPE: $$;$	1129	ALIAS:
		1130	aio_readlink = EIO_READLINK
		1131	aio_realpath = EIO_REALPATH
1623	PPCODE:	1132	PPCODE:
1624	{	1133	{
1625	SV *data;
1626	dREQ;	1134	dREQ;
1627		1135
1628	data = newSV (NAME_MAX);
1629	SvPOK_on (data);
1630
1631	req->type = REQ_READLINK;	1136	req->type = ix;
1632	req->sv1 = newSVsv (path);	1137	req->sv1 = newSVsv (path);
1633	req->ptr2 = SvPVbyte_nolen (req->sv1);	1138	req->ptr1 = SvPVbyte_nolen (req->sv1);
1634	req->sv2 = data;
1635	req->ptr1 = SvPVbyte_nolen (data);
1636		1139
1637	REQ_SEND;	1140	REQ_SEND;
1638	}	1141	}
1639		1142
1640	void	1143	void
1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1144	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1642	PROTOTYPE: $$$$;$
1643	PPCODE:	1145	PPCODE:
1644	{	1146	{
		1147	int ifd = s_fileno_croak (in_fh , 0);
		1148	int ofd = s_fileno_croak (out_fh, 1);
1645	dREQ;	1149	dREQ;
1646		1150
1647	req->type = REQ_SENDFILE;	1151	req->type = EIO_SENDFILE;
1648	req->sv1 = newSVsv (out_fh);	1152	req->sv1 = newSVsv (out_fh);
1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1153	req->int1 = ofd;
1650	req->sv2 = newSVsv (in_fh);	1154	req->sv2 = newSVsv (in_fh);
1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1155	req->int2 = ifd;
1652	req->offs = SvVAL64 (in_offset);	1156	req->offs = in_offset;
1653	req->size = length;	1157	req->size = length;
1654		1158
1655	REQ_SEND;	1159	REQ_SEND;
1656	}	1160	}
1657		1161
1658	void	1162	void
1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1163	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$;$
1661	PPCODE:	1164	PPCODE:
1662	{	1165	{
		1166	int fd = s_fileno_croak (fh, 0);
1663	dREQ;	1167	dREQ;
1664		1168
1665	req->type = REQ_READAHEAD;	1169	req->type = EIO_READAHEAD;
1666	req->sv1 = newSVsv (fh);	1170	req->sv1 = newSVsv (fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1171	req->int1 = fd;
1668	req->offs = SvVAL64 (offset);	1172	req->offs = offset;
1669	req->size = length;	1173	req->size = length;
1670		1174
1671	REQ_SEND;	1175	REQ_SEND;
1672	}	1176	}
1673		1177
1674	void	1178	void
1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1179	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1676	ALIAS:	1180	ALIAS:
1677	aio_stat = REQ_STAT	1181	aio_stat = EIO_STAT
1678	aio_lstat = REQ_LSTAT	1182	aio_lstat = EIO_LSTAT
		1183	aio_statvfs = EIO_STATVFS
1679	PPCODE:	1184	PPCODE:
1680	{	1185	{
1681	dREQ;	1186	dREQ;
1682		1187
1683	req->ptr2 = malloc (sizeof (Stat_t));
1684	if (!req->ptr2)
1685	{
1686	req_destroy (req);
1687	croak ("out of memory during aio_stat statdata allocation");
1688	}
1689
1690	req->flags |= FLAG_PTR2_FREE;
1691	req->sv1 = newSVsv (fh_or_path);	1188	req->sv1 = newSVsv (fh_or_path);
1692		1189
1693	if (SvPOK (fh_or_path))	1190	if (SvPOK (req->sv1))
1694	{	1191	{
1695	req->type = ix;	1192	req->type = ix;
1696	req->ptr1 = SvPVbyte_nolen (req->sv1);	1193	req->ptr1 = SvPVbyte_nolen (req->sv1);
1697	}	1194	}
1698	else	1195	else
1699	{	1196	{
1700	req->type = REQ_FSTAT;	1197	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1198	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1702	}	1199	}
1703		1200
1704	REQ_SEND;	1201	REQ_SEND;
1705	}	1202	}
		1203
		1204	UV
		1205	major (UV dev)
		1206	ALIAS:
		1207	minor = 1
		1208	CODE:
		1209	RETVAL = ix ? major (dev) : minor (dev);
		1210	OUTPUT:
		1211	RETVAL
		1212
		1213	UV
		1214	makedev (UV maj, UV min)
		1215	CODE:
		1216	RETVAL = makedev (maj, min);
		1217	OUTPUT:
		1218	RETVAL
1706		1219
1707	void	1220	void
1708	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1221	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1709	PPCODE:	1222	PPCODE:
1710	{	1223	{
…		…
1712		1225
1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1226	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1227	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1715	req->sv1 = newSVsv (fh_or_path);	1228	req->sv1 = newSVsv (fh_or_path);
1716		1229
1717	if (SvPOK (fh_or_path))	1230	if (SvPOK (req->sv1))
1718	{	1231	{
1719	req->type = REQ_UTIME;	1232	req->type = EIO_UTIME;
1720	req->ptr1 = SvPVbyte_nolen (req->sv1);	1233	req->ptr1 = SvPVbyte_nolen (req->sv1);
1721	}	1234	}
1722	else	1235	else
1723	{	1236	{
1724	req->type = REQ_FUTIME;	1237	req->type = EIO_FUTIME;
1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1238	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1726	}	1239	}
1727		1240
1728	REQ_SEND;	1241	REQ_SEND;
1729	}	1242	}
…		…
1735	dREQ;	1248	dREQ;
1736		1249
1737	req->sv1 = newSVsv (fh_or_path);	1250	req->sv1 = newSVsv (fh_or_path);
1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1251	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1739		1252
1740	if (SvPOK (fh_or_path))	1253	if (SvPOK (req->sv1))
1741	{	1254	{
1742	req->type = REQ_TRUNCATE;	1255	req->type = EIO_TRUNCATE;
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);	1256	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	}	1257	}
1745	else	1258	else
1746	{	1259	{
1747	req->type = REQ_FTRUNCATE;	1260	req->type = EIO_FTRUNCATE;
1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1261	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1749	}	1262	}
1750		1263
1751	REQ_SEND;	1264	REQ_SEND;
1752	}	1265	}
1753		1266
1754	void	1267	void
1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1268	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1269	ALIAS:
		1270	aio_chmod = EIO_CHMOD
		1271	aio_mkdir = EIO_MKDIR
1756	PPCODE:	1272	PPCODE:
1757	{	1273	{
1758	dREQ;	1274	dREQ;
1759		1275
1760	req->mode = mode;	1276	req->int2 = mode;
1761	req->sv1 = newSVsv (fh_or_path);	1277	req->sv1 = newSVsv (fh_or_path);
1762		1278
1763	if (SvPOK (fh_or_path))	1279	if (SvPOK (req->sv1))
1764	{	1280	{
1765	req->type = REQ_CHMOD;	1281	req->type = ix;
1766	req->ptr1 = SvPVbyte_nolen (req->sv1);	1282	req->ptr1 = SvPVbyte_nolen (req->sv1);
1767	}	1283	}
1768	else	1284	else
1769	{	1285	{
1770	req->type = REQ_FCHMOD;	1286	req->type = EIO_FCHMOD;
1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1287	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1772	}	1288	}
1773		1289
1774	REQ_SEND;	1290	REQ_SEND;
1775	}	1291	}
…		…
1782		1298
1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1299	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1300	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1785	req->sv1 = newSVsv (fh_or_path);	1301	req->sv1 = newSVsv (fh_or_path);
1786		1302
1787	if (SvPOK (fh_or_path))	1303	if (SvPOK (req->sv1))
1788	{	1304	{
1789	req->type = REQ_CHOWN;	1305	req->type = EIO_CHOWN;
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);	1306	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791	}	1307	}
1792	else	1308	else
1793	{	1309	{
1794	req->type = REQ_FCHOWN;	1310	req->type = EIO_FCHOWN;
1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1311	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1796	}	1312	}
1797		1313
1798	REQ_SEND;	1314	REQ_SEND;
1799	}	1315	}
1800		1316
1801	void	1317	void
		1318	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1319	PPCODE:
		1320	{
		1321	dREQ;
		1322
		1323	req->type = EIO_READDIR;
		1324	req->sv1 = newSVsv (pathname);
		1325	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1326	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1327
		1328	if (flags & EIO_READDIR_DENTS)
		1329	req->int1 |= EIO_READDIR_CUSTOM2;
		1330
		1331	REQ_SEND;
		1332	}
		1333
		1334	void
1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1335	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1803	ALIAS:	1336	ALIAS:
1804	aio_unlink = REQ_UNLINK	1337	aio_unlink = EIO_UNLINK
1805	aio_rmdir = REQ_RMDIR	1338	aio_rmdir = EIO_RMDIR
1806	aio_readdir = REQ_READDIR	1339	aio_readdir = EIO_READDIR
1807	PPCODE:	1340	PPCODE:
1808	{	1341	{
1809	dREQ;	1342	dREQ;
1810		1343
1811	req->type = ix;	1344	req->type = ix;
…		…
1814		1347
1815	REQ_SEND;	1348	REQ_SEND;
1816	}	1349	}
1817		1350
1818	void	1351	void
1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1820	PPCODE:
1821	{
1822	dREQ;
1823
1824	req->type = REQ_MKDIR;
1825	req->sv1 = newSVsv (pathname);
1826	req->ptr1 = SvPVbyte_nolen (req->sv1);
1827	req->mode = mode;
1828
1829	REQ_SEND;
1830	}
1831
1832	void
1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1352	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1834	ALIAS:	1353	ALIAS:
1835	aio_link = REQ_LINK	1354	aio_link = EIO_LINK
1836	aio_symlink = REQ_SYMLINK	1355	aio_symlink = EIO_SYMLINK
1837	aio_rename = REQ_RENAME	1356	aio_rename = EIO_RENAME
1838	PPCODE:	1357	PPCODE:
1839	{	1358	{
1840	dREQ;	1359	dREQ;
1841		1360
1842	req->type = ix;	1361	req->type = ix;
1843	req->sv2 = newSVsv (oldpath);	1362	req->sv1 = newSVsv (oldpath);
		1363	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1364	req->sv2 = newSVsv (newpath);
1844	req->ptr2 = SvPVbyte_nolen (req->sv2);	1365	req->ptr2 = SvPVbyte_nolen (req->sv2);
1845	req->sv1 = newSVsv (newpath);
1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1847		1366
1848	REQ_SEND;	1367	REQ_SEND;
1849	}	1368	}
1850		1369
1851	void	1370	void
1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1371	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1853	PPCODE:	1372	PPCODE:
1854	{	1373	{
1855	dREQ;	1374	dREQ;
1856		1375
1857	req->type = REQ_MKNOD;	1376	req->type = EIO_MKNOD;
1858	req->sv1 = newSVsv (pathname);	1377	req->sv1 = newSVsv (pathname);
1859	req->ptr1 = SvPVbyte_nolen (req->sv1);	1378	req->ptr1 = SvPVbyte_nolen (req->sv1);
1860	req->mode = (mode_t)mode;	1379	req->int2 = (mode_t)mode;
1861	req->offs = dev;	1380	req->offs = dev;
1862		1381
1863	REQ_SEND;	1382	REQ_SEND;
1864	}	1383	}
1865		1384
1866	void	1385	void
		1386	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1387	ALIAS:
		1388	aio_mtouch = EIO_MTOUCH
		1389	aio_msync = EIO_MSYNC
		1390	PPCODE:
		1391	{
		1392	STRLEN svlen;
		1393	char *svptr = SvPVbyte (data, svlen);
		1394	UV len = SvUV (length);
		1395
		1396	if (offset < 0)
		1397	offset += svlen;
		1398
		1399	if (offset < 0 || offset > svlen)
		1400	croak ("offset outside of scalar");
		1401
		1402	if (!SvOK (length) || len + offset > svlen)
		1403	len = svlen - offset;
		1404
		1405	{
		1406	dREQ;
		1407
		1408	req->type = ix;
		1409	req->sv2 = SvREFCNT_inc (data);
		1410	req->ptr2 = (char *)svptr + offset;
		1411	req->size = len;
		1412	req->int1 = flags;
		1413
		1414	REQ_SEND;
		1415	}
		1416	}
		1417
		1418	void
		1419	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1420	PPCODE:
		1421	{
		1422	STRLEN svlen;
		1423	char *svptr = SvPVbyte (data, svlen);
		1424	UV len = SvUV (length);
		1425
		1426	if (offset < 0)
		1427	offset += svlen;
		1428
		1429	if (offset < 0 || offset > svlen)
		1430	croak ("offset outside of scalar");
		1431
		1432	if (!SvOK (length) || len + offset > svlen)
		1433	len = svlen - offset;
		1434
		1435	{
		1436	dREQ;
		1437
		1438	req->type = EIO_MLOCK;
		1439	req->sv2 = SvREFCNT_inc (data);
		1440	req->ptr2 = (char *)svptr + offset;
		1441	req->size = len;
		1442
		1443	REQ_SEND;
		1444	}
		1445	}
		1446
		1447	void
		1448	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1449	PPCODE:
		1450	{
		1451	dREQ;
		1452
		1453	req->type = EIO_MLOCKALL;
		1454	req->int1 = flags;
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
1867	aio_busy (double delay, SV *callback=&PL_sv_undef)	1460	aio_busy (double delay, SV *callback=&PL_sv_undef)
1868	PPCODE:	1461	PPCODE:
1869	{	1462	{
1870	dREQ;	1463	dREQ;
1871		1464
1872	req->type = REQ_BUSY;	1465	req->type = EIO_BUSY;
1873	req->nv1 = delay < 0. ? 0. : delay;	1466	req->nv1 = delay < 0. ? 0. : delay;
1874		1467
1875	REQ_SEND;	1468	REQ_SEND;
1876	}	1469	}
1877		1470
1878	void	1471	void
1879	aio_group (SV *callback=&PL_sv_undef)	1472	aio_group (SV *callback=&PL_sv_undef)
1880	PROTOTYPE: ;$
1881	PPCODE:	1473	PPCODE:
1882	{	1474	{
1883	dREQ;	1475	dREQ;
1884		1476
1885	req->type = REQ_GROUP;	1477	req->type = EIO_GROUP;
1886		1478
1887	req_send (req);	1479	req_submit (req);
1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1480	XPUSHs (req_sv (req, aio_grp_stash));
1889	}	1481	}
1890		1482
1891	void	1483	void
1892	aio_nop (SV *callback=&PL_sv_undef)	1484	aio_nop (SV *callback=&PL_sv_undef)
		1485	ALIAS:
		1486	aio_nop = EIO_NOP
		1487	aio_sync = EIO_SYNC
1893	PPCODE:	1488	PPCODE:
1894	{	1489	{
1895	dREQ;	1490	dREQ;
1896		1491
1897	req->type = REQ_NOP;	1492	req->type = ix;
1898		1493
1899	REQ_SEND;	1494	REQ_SEND;
1900	}	1495	}
1901		1496
1902	int	1497	int
1903	aioreq_pri (int pri = 0)	1498	aioreq_pri (int pri = 0)
1904	PROTOTYPE: ;$
1905	CODE:	1499	CODE:
1906	RETVAL = next_pri - PRI_BIAS;	1500	RETVAL = next_pri;
1907	if (items > 0)	1501	if (items > 0)
1908	{	1502	{
1909	if (pri < PRI_MIN) pri = PRI_MIN;	1503	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1910	if (pri > PRI_MAX) pri = PRI_MAX;	1504	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1911	next_pri = pri + PRI_BIAS;	1505	next_pri = pri;
1912	}	1506	}
1913	OUTPUT:	1507	OUTPUT:
1914	RETVAL	1508	RETVAL
1915		1509
1916	void	1510	void
1917	aioreq_nice (int nice = 0)	1511	aioreq_nice (int nice = 0)
1918	CODE:	1512	CODE:
1919	nice = next_pri - nice;	1513	nice = next_pri - nice;
1920	if (nice < PRI_MIN) nice = PRI_MIN;	1514	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1921	if (nice > PRI_MAX) nice = PRI_MAX;	1515	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1922	next_pri = nice + PRI_BIAS;	1516	next_pri = nice;
1923		1517
1924	void	1518	void
1925	flush ()	1519	flush ()
1926	PROTOTYPE:
1927	CODE:	1520	CODE:
1928	while (nreqs)	1521	while (eio_nreqs ())
1929	{	1522	{
1930	poll_wait ();	1523	poll_wait ();
1931	poll_cb ();	1524	poll_cb ();
1932	}	1525	}
1933		1526
1934	int	1527	int
1935	poll()	1528	poll ()
1936	PROTOTYPE:
1937	CODE:	1529	CODE:
1938	poll_wait ();	1530	poll_wait ();
1939	RETVAL = poll_cb ();	1531	RETVAL = poll_cb ();
1940	OUTPUT:	1532	OUTPUT:
1941	RETVAL	1533	RETVAL
1942		1534
1943	int	1535	int
1944	poll_fileno()	1536	poll_fileno ()
1945	PROTOTYPE:
1946	CODE:	1537	CODE:
1947	RETVAL = respipe [0];	1538	RETVAL = s_epipe_fd (&respipe);
1948	OUTPUT:	1539	OUTPUT:
1949	RETVAL	1540	RETVAL
1950		1541
1951	int	1542	int
1952	poll_cb(...)	1543	poll_cb (...)
1953	PROTOTYPE:	1544	PROTOTYPE:
1954	CODE:	1545	CODE:
1955	RETVAL = poll_cb ();	1546	RETVAL = poll_cb ();
1956	OUTPUT:	1547	OUTPUT:
1957	RETVAL	1548	RETVAL
1958		1549
1959	void	1550	void
1960	poll_wait()	1551	poll_wait ()
1961	PROTOTYPE:
1962	CODE:	1552	CODE:
1963	poll_wait ();	1553	poll_wait ();
1964		1554
1965	void
1966	setsig (int signum = SIGIO)
1967	PROTOTYPE: ;$
1968	CODE:
1969	{
1970	if (block_sig_level)
1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1972
1973	X_LOCK (reslock);
1974	main_tid = pthread_self ();
1975	main_sig = signum;
1976	X_UNLOCK (reslock);
1977
1978	if (main_sig && npending)
1979	pthread_kill (main_tid, main_sig);
1980	}
1981
1982	void
1983	aio_block (SV *cb)
1984	PROTOTYPE: &
1985	PPCODE:
1986	{
1987	int count;
1988
1989	block_sig ();
1990	PUSHMARK (SP);
1991	PUTBACK;
1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1993	SPAGAIN;
1994	unblock_sig ();
1995
1996	if (SvTRUE (ERRSV))
1997	croak (0);
1998
1999	XSRETURN (count);
2000	}
2001
2002	int	1555	int
2003	nreqs()	1556	nreqs ()
2004	PROTOTYPE:
2005	CODE:	1557	CODE:
2006	RETVAL = nreqs;	1558	RETVAL = eio_nreqs ();
2007	OUTPUT:	1559	OUTPUT:
2008	RETVAL	1560	RETVAL
2009		1561
2010	int	1562	int
2011	nready()	1563	nready ()
2012	PROTOTYPE:
2013	CODE:	1564	CODE:
2014	RETVAL = get_nready ();	1565	RETVAL = eio_nready ();
2015	OUTPUT:	1566	OUTPUT:
2016	RETVAL	1567	RETVAL
2017		1568
2018	int	1569	int
2019	npending()	1570	npending ()
2020	PROTOTYPE:
2021	CODE:	1571	CODE:
2022	RETVAL = get_npending ();	1572	RETVAL = eio_npending ();
2023	OUTPUT:	1573	OUTPUT:
2024	RETVAL	1574	RETVAL
2025		1575
2026	int	1576	int
2027	nthreads()	1577	nthreads ()
2028	PROTOTYPE:
2029	CODE:	1578	CODE:
2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1579	RETVAL = eio_nthreads ();
2031	RETVAL = started;
2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2033	OUTPUT:	1580	OUTPUT:
2034	RETVAL	1581	RETVAL
2035		1582
		1583	int
		1584	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1585	CODE:
		1586	RETVAL = posix_fadvise (fh, offset, length, advice);
		1587	OUTPUT:
		1588	RETVAL
		1589
		1590	ssize_t
		1591	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1592	CODE:
		1593	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1594	OUTPUT:
		1595	RETVAL
		1596
		1597	void
		1598	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1599	PPCODE:
		1600	sv_unmagic (scalar, MMAP_MAGIC);
		1601	{
		1602	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1603	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1604	if (addr == (void *)-1)
		1605	XSRETURN_NO;
		1606
		1607	sv_force_normal (scalar);
		1608
		1609	/* we store the length in mg_obj, as namlen is I32 :/ */
		1610	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1611	->mg_obj = (SV *)length;
		1612
		1613	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1614
		1615	if (!(prot & PROT_WRITE))
		1616	SvREADONLY_on (scalar);
		1617
		1618	if (SvLEN (scalar))
		1619	Safefree (SvPVX (scalar));
		1620
		1621	SvPVX (scalar) = (char *)addr;
		1622	SvCUR_set (scalar, length);
		1623	SvLEN_set (scalar, 0);
		1624	SvPOK_only (scalar);
		1625
		1626	XSRETURN_YES;
		1627	}
		1628
		1629	void
		1630	munmap (SV *scalar)
		1631	CODE:
		1632	sv_unmagic (scalar, MMAP_MAGIC);
		1633
		1634	int
		1635	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1636	ALIAS:
		1637	mprotect = 1
		1638	CODE:
		1639	{
		1640	STRLEN svlen;
		1641	void *addr = SvPVbyte (scalar, svlen);
		1642	size_t len = SvUV (length);
		1643
		1644	if (offset < 0)
		1645	offset += svlen;
		1646
		1647	if (offset < 0 || offset > svlen)
		1648	croak ("offset outside of scalar");
		1649
		1650	if (!SvOK (length) || len + offset > svlen)
		1651	len = svlen - offset;
		1652
		1653	addr = (void *)(((intptr_t)addr) + offset);
		1654	eio_page_align (&addr, &len);
		1655
		1656	switch (ix)
		1657	{
		1658	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1659	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1660	}
		1661	}
		1662	OUTPUT:
		1663	RETVAL
		1664
		1665	int
		1666	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1667	CODE:
		1668	{
		1669	STRLEN svlen;
		1670	void *addr = SvPVbyte (scalar, svlen);
		1671	size_t len = SvUV (length);
		1672
		1673	if (offset < 0)
		1674	offset += svlen;
		1675
		1676	if (offset < 0 || offset > svlen)
		1677	croak ("offset outside of scalar");
		1678
		1679	if (!SvOK (length) || len + offset > svlen)
		1680	len = svlen - offset;
		1681
		1682	addr = (void *)(((intptr_t)addr) + offset);
		1683	eio_page_align (&addr, &len);
		1684	#if _POSIX_MEMLOCK_RANGE
		1685	RETVAL = munlock (addr, len);
		1686	#else
		1687	RETVAL = ((errno = ENOSYS), -1);
		1688	#endif
		1689	}
		1690	OUTPUT:
		1691	RETVAL
		1692
		1693	int
		1694	munlockall ()
		1695	CODE:
		1696	#if _POSIX_MEMLOCK
		1697	munlockall ();
		1698	#else
		1699	RETVAL = -1;
		1700	errno = ENOSYS;
		1701	#endif
		1702	OUTPUT:
		1703	RETVAL
		1704
		1705	void _on_next_submit (SV *cb)
		1706	CODE:
		1707	SvREFCNT_dec (on_next_submit);
		1708	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1709
2036	PROTOTYPES: DISABLE	1710	PROTOTYPES: DISABLE
2037		1711
2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1712	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2039		1713
2040	void	1714	void
2041	cancel (aio_req_ornot req)	1715	cancel (aio_req_ornot req)
2042	CODE:	1716	CODE:
2043	req_cancel (req);	1717	eio_cancel (req);
2044		1718
2045	void	1719	void
2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1720	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2047	CODE:	1721	PPCODE:
		1722	{
		1723	if (GIMME_V != G_VOID)
		1724	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1725
		1726	if (items > 1)
		1727	{
		1728	SV *cb_cv =get_cb (callback);
		1729
2048	SvREFCNT_dec (req->callback);	1730	SvREFCNT_dec (req->callback);
2049	req->callback = newSVsv (callback);	1731	req->callback = SvREFCNT_inc (cb_cv);
		1732	}
		1733	}
2050		1734
2051	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1735	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2052		1736
2053	void	1737	void
2054	add (aio_req grp, ...)	1738	add (aio_req grp, ...)
2055	PPCODE:	1739	PPCODE:
2056	{	1740	{
2057	int i;	1741	int i;
2058	aio_req req;
2059
2060	if (main_sig && !block_sig_level)
2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2062		1742
2063	if (grp->int1 == 2)	1743	if (grp->int1 == 2)
2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1744	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2065		1745
2066	for (i = 1; i < items; ++i )	1746	for (i = 1; i < items; ++i )
2067	{	1747	{
		1748	aio_req req;
		1749
2068	if (GIMME_V != G_VOID)	1750	if (GIMME_V != G_VOID)
2069	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1751	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2070		1752
2071	req = SvAIO_REQ (ST (i));	1753	req = SvAIO_REQ (ST (i));
2072		1754
2073	if (req)	1755	if (req)
2074	{	1756	eio_grp_add (grp, req);
2075	++grp->size;
2076	req->grp = grp;
2077
2078	req->grp_prev = 0;
2079	req->grp_next = grp->grp_first;
2080
2081	if (grp->grp_first)
2082	grp->grp_first->grp_prev = req;
2083
2084	grp->grp_first = req;
2085	}
2086	}	1757	}
2087	}	1758	}
2088		1759
2089	void	1760	void
2090	cancel_subs (aio_req_ornot req)	1761	cancel_subs (aio_req_ornot req)
…		…
2099	AV *av;	1770	AV *av;
2100		1771
2101	grp->errorno = errno;	1772	grp->errorno = errno;
2102		1773
2103	av = newAV ();	1774	av = newAV ();
		1775	av_extend (av, items - 1);
2104		1776
2105	for (i = 1; i < items; ++i )	1777	for (i = 1; i < items; ++i )
2106	av_push (av, newSVsv (ST (i)));	1778	av_push (av, newSVsv (ST (i)));
2107		1779
2108	SvREFCNT_dec (grp->sv1);	1780	SvREFCNT_dec (grp->sv1);
…		…
2115	grp->errorno = errorno;	1787	grp->errorno = errorno;
2116		1788
2117	void	1789	void
2118	limit (aio_req grp, int limit)	1790	limit (aio_req grp, int limit)
2119	CODE:	1791	CODE:
2120	grp->int2 = limit;	1792	eio_grp_limit (grp, limit);
2121	aio_grp_feed (grp);
2122		1793
2123	void	1794	void
2124	feed (aio_req grp, SV *callback=&PL_sv_undef)	1795	feed (aio_req grp, SV *callback=&PL_sv_undef)
2125	CODE:	1796	CODE:
2126	{	1797	{
2127	SvREFCNT_dec (grp->sv2);	1798	SvREFCNT_dec (grp->sv2);
2128	grp->sv2 = newSVsv (callback);	1799	grp->sv2 = newSVsv (callback);
		1800	grp->feed = aio_grp_feed;
2129		1801
2130	if (grp->int2 <= 0)	1802	if (grp->int2 <= 0)
2131	grp->int2 = 2;	1803	grp->int2 = 2;
2132		1804
2133	aio_grp_feed (grp);	1805	eio_grp_limit (grp, grp->int2);
2134	}	1806	}
2135		1807

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