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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.107 by root, Wed Oct 3 21:27:51 2007 UTC vs.
Revision 1.190 by root, Mon Jul 18 02:02:26 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 = 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	reinit (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	reinit ();
1465
1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1467	}	929	}
1468		930
1469	void	931	void
		932	reinit ()
		933	PROTOTYPE:
		934	CODE:
		935	reinit ();
		936
		937	void
1470	max_poll_reqs (int nreqs)	938	max_poll_reqs (unsigned int nreqs)
1471	PROTOTYPE: $	939	PROTOTYPE: $
1472	CODE:	940	CODE:
1473	max_poll_reqs = nreqs;	941	eio_set_max_poll_reqs (nreqs);
1474		942
1475	void	943	void
1476	max_poll_time (double nseconds)	944	max_poll_time (double nseconds)
1477	PROTOTYPE: $	945	PROTOTYPE: $
1478	CODE:	946	CODE:
1479	max_poll_time = nseconds * AIO_TICKS;	947	eio_set_max_poll_time (nseconds);
1480		948
1481	void	949	void
1482	min_parallel (int nthreads)	950	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: $	951	PROTOTYPE: $
1492	CODE:	952	CODE:
1493	set_max_idle (nthreads);	953	eio_set_min_parallel (nthreads);
1494		954
1495	int	955	void
1496	max_outstanding (int maxreqs)	956	max_parallel (unsigned int nthreads)
1497	PROTOTYPE: $	957	PROTOTYPE: $
1498	CODE:	958	CODE:
1499	RETVAL = max_outstanding;	959	eio_set_max_parallel (nthreads);
		960
		961	void
		962	max_idle (unsigned int nthreads)
		963	PROTOTYPE: $
		964	CODE:
		965	eio_set_max_idle (nthreads);
		966
		967	void
		968	idle_timeout (unsigned int seconds)
		969	PROTOTYPE: $
		970	CODE:
		971	eio_set_idle_timeout (seconds);
		972
		973	void
		974	max_outstanding (unsigned int maxreqs)
		975	PROTOTYPE: $
		976	CODE:
1500	max_outstanding = maxreqs;	977	max_outstanding = maxreqs;
1501	OUTPUT:
1502	RETVAL
1503		978
1504	void	979	void
1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	980	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$;$
1507	PPCODE:	981	PPCODE:
1508	{	982	{
1509	dREQ;	983	dREQ;
1510		984
1511	req->type = REQ_OPEN;	985	req->type = EIO_OPEN;
1512	req->sv1 = newSVsv (pathname);	986	req->sv1 = newSVsv (pathname);
1513	req->ptr1 = SvPVbyte_nolen (req->sv1);	987	req->ptr1 = SvPVbyte_nolen (req->sv1);
1514	req->int1 = flags;	988	req->int1 = flags;
1515	req->mode = mode;	989	req->int2 = mode;
1516		990
1517	REQ_SEND;	991	REQ_SEND;
1518	}	992	}
1519		993
1520	void	994	void
1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	995	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1522	PROTOTYPE: $;$
1523	ALIAS:	996	ALIAS:
1524	aio_fsync = REQ_FSYNC	997	aio_fsync = EIO_FSYNC
1525	aio_fdatasync = REQ_FDATASYNC	998	aio_fdatasync = EIO_FDATASYNC
1526	PPCODE:	999	PPCODE:
1527	{	1000	{
		1001	int fd = s_fileno_croak (fh, 0);
1528	dREQ;	1002	dREQ;
1529		1003
1530	req->type = ix;	1004	req->type = ix;
1531	req->sv1 = newSVsv (fh);	1005	req->sv1 = newSVsv (fh);
1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1006	req->int1 = fd;
1533		1007
1534	REQ_SEND (req);	1008	REQ_SEND (req);
1535	}	1009	}
1536		1010
1537	void	1011	void
		1012	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1013	PPCODE:
		1014	{
		1015	int fd = s_fileno_croak (fh, 0);
		1016	dREQ;
		1017
		1018	req->type = EIO_SYNC_FILE_RANGE;
		1019	req->sv1 = newSVsv (fh);
		1020	req->int1 = fd;
		1021	req->offs = offset;
		1022	req->size = nbytes;
		1023	req->int2 = flags;
		1024
		1025	REQ_SEND (req);
		1026	}
		1027
		1028	void
		1029	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1030	PPCODE:
		1031	{
		1032	int fd = s_fileno_croak (fh, 0);
		1033	dREQ;
		1034
		1035	req->type = EIO_FALLOCATE;
		1036	req->sv1 = newSVsv (fh);
		1037	req->int1 = fd;
		1038	req->int2 = mode;
		1039	req->offs = offset;
		1040	req->size = len;
		1041
		1042	REQ_SEND (req);
		1043	}
		1044
		1045	void
1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1046	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $;$
1540	PPCODE:	1047	PPCODE:
1541	{	1048	{
1542	PerlIO *io = IoIFP (sv_2io (fh));	1049	static int close_fd = -1; /* dummy fd to close fds via dup2 */
1543	int fd = PerlIO_fileno (io);	1050	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 (io, 0, 0, 0);
1549
1550	{
1551	dREQ;	1051	dREQ;
1552		1052
		1053	if (expect_false (close_fd < 0))
		1054	{
		1055	int pipefd [2];
		1056
		1057	if (
		1058	#ifdef _WIN32
		1059	_pipe (pipefd, 1, _O_BINARY) < 0
		1060	#else
		1061	pipe (pipefd) < 0
		1062	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1063	#endif
		1064	|| close (pipefd [1]) < 0
		1065	)
		1066	abort (); /*D*/
		1067
		1068	close_fd = pipefd [0];
		1069	}
		1070
1553	req->type = REQ_CLOSE;	1071	req->type = EIO_DUP2;
		1072	req->int1 = close_fd;
1554	req->sv1 = newSVsv (fh);	1073	req->sv2 = newSVsv (fh);
1555	req->ptr1 = (void *)io;	1074	req->int2 = fd;
1556		1075
1557	REQ_SEND (req);	1076	REQ_SEND (req);
1558	}
1559	}	1077	}
1560		1078
1561	void	1079	void
1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1080	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1563	ALIAS:	1081	ALIAS:
1564	aio_read = REQ_READ	1082	aio_read = EIO_READ
1565	aio_write = REQ_WRITE	1083	aio_write = EIO_WRITE
1566	PROTOTYPE: $$$$$;$
1567	PPCODE:	1084	PPCODE:
1568	{	1085	{
1569	STRLEN svlen;	1086	STRLEN svlen;
		1087	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1570	char *svptr = SvPVbyte (data, svlen);	1088	char *svptr = SvPVbyte (data, svlen);
1571	UV len = SvUV (length);	1089	UV len = SvUV (length);
1572		1090
1573	SvUPGRADE (data, SVt_PV);
1574	SvPOK_on (data);
1575
1576	if (dataoffset < 0)	1091	if (dataoffset < 0)
1577	dataoffset += svlen;	1092	dataoffset += svlen;
1578		1093
1579	if (dataoffset < 0 || dataoffset > svlen)	1094	if (dataoffset < 0 || dataoffset > svlen)
1580	croak ("dataoffset outside of data scalar");	1095	croak ("dataoffset outside of data scalar");
1581		1096
1582	if (ix == REQ_WRITE)	1097	if (ix == EIO_WRITE)
1583	{	1098	{
1584	/* write: check length and adjust. */	1099	/* write: check length and adjust. */
1585	if (!SvOK (length) || len + dataoffset > svlen)	1100	if (!SvOK (length) || len + dataoffset > svlen)
1586	len = svlen - dataoffset;	1101	len = svlen - dataoffset;
1587	}	1102	}
1588	else	1103	else
1589	{	1104	{
1590	/* read: grow scalar as necessary */	1105	/* read: check type and grow scalar as necessary */
		1106	SvUPGRADE (data, SVt_PV);
1591	svptr = SvGROW (data, len + dataoffset + 1);	1107	svptr = SvGROW (data, len + dataoffset + 1);
1592	}	1108	}
1593		1109
1594	if (len < 0)
1595	croak ("length must not be negative");
1596
1597	{	1110	{
1598	dREQ;	1111	dREQ;
1599		1112
1600	req->type = ix;	1113	req->type = ix;
1601	req->sv1 = newSVsv (fh);	1114	req->sv1 = newSVsv (fh);
1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1115	req->int1 = fd;
1603	: IoOFP (sv_2io (fh)));
1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1116	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1605	req->size = len;	1117	req->size = len;
1606	req->sv2 = SvREFCNT_inc (data);	1118	req->sv2 = SvREFCNT_inc (data);
1607	req->ptr1 = (char *)svptr + dataoffset;	1119	req->ptr2 = (char *)svptr + dataoffset;
1608	req->stroffset = dataoffset;	1120	req->stroffset = dataoffset;
1609		1121
1610	if (!SvREADONLY (data))	1122	if (!SvREADONLY (data))
1611	{	1123	{
1612	SvREADONLY_on (data);	1124	SvREADONLY_on (data);
…		…
1617	}	1129	}
1618	}	1130	}
1619		1131
1620	void	1132	void
1621	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1133	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1622	PROTOTYPE: $$;$	1134	ALIAS:
		1135	aio_readlink = EIO_READLINK
		1136	aio_realpath = EIO_REALPATH
1623	PPCODE:	1137	PPCODE:
1624	{	1138	{
1625	SV *data;
1626	dREQ;	1139	dREQ;
1627		1140
1628	data = newSV (NAME_MAX);
1629	SvPOK_on (data);
1630
1631	req->type = REQ_READLINK;	1141	req->type = ix;
1632	req->sv1 = newSVsv (path);	1142	req->sv1 = newSVsv (path);
1633	req->ptr2 = SvPVbyte_nolen (req->sv1);	1143	req->ptr1 = SvPVbyte_nolen (req->sv1);
1634	req->sv2 = data;
1635	req->ptr1 = SvPVbyte_nolen (data);
1636		1144
1637	REQ_SEND;	1145	REQ_SEND;
1638	}	1146	}
1639		1147
1640	void	1148	void
1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1149	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1642	PROTOTYPE: $$$$;$
1643	PPCODE:	1150	PPCODE:
1644	{	1151	{
		1152	int ifd = s_fileno_croak (in_fh , 0);
		1153	int ofd = s_fileno_croak (out_fh, 1);
1645	dREQ;	1154	dREQ;
1646		1155
1647	req->type = REQ_SENDFILE;	1156	req->type = EIO_SENDFILE;
1648	req->sv1 = newSVsv (out_fh);	1157	req->sv1 = newSVsv (out_fh);
1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1158	req->int1 = ofd;
1650	req->sv2 = newSVsv (in_fh);	1159	req->sv2 = newSVsv (in_fh);
1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1160	req->int2 = ifd;
1652	req->offs = SvVAL64 (in_offset);	1161	req->offs = in_offset;
1653	req->size = length;	1162	req->size = length;
1654		1163
1655	REQ_SEND;	1164	REQ_SEND;
1656	}	1165	}
1657		1166
1658	void	1167	void
1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1168	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$;$
1661	PPCODE:	1169	PPCODE:
1662	{	1170	{
		1171	int fd = s_fileno_croak (fh, 0);
1663	dREQ;	1172	dREQ;
1664		1173
1665	req->type = REQ_READAHEAD;	1174	req->type = EIO_READAHEAD;
1666	req->sv1 = newSVsv (fh);	1175	req->sv1 = newSVsv (fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1176	req->int1 = fd;
1668	req->offs = SvVAL64 (offset);	1177	req->offs = offset;
1669	req->size = length;	1178	req->size = length;
1670		1179
1671	REQ_SEND;	1180	REQ_SEND;
1672	}	1181	}
1673		1182
1674	void	1183	void
1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1184	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1676	ALIAS:	1185	ALIAS:
1677	aio_stat = REQ_STAT	1186	aio_stat = EIO_STAT
1678	aio_lstat = REQ_LSTAT	1187	aio_lstat = EIO_LSTAT
		1188	aio_statvfs = EIO_STATVFS
1679	PPCODE:	1189	PPCODE:
1680	{	1190	{
1681	dREQ;	1191	dREQ;
1682		1192
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);	1193	req->sv1 = newSVsv (fh_or_path);
1692		1194
1693	if (SvPOK (fh_or_path))	1195	if (SvPOK (req->sv1))
1694	{	1196	{
1695	req->type = ix;	1197	req->type = ix;
1696	req->ptr1 = SvPVbyte_nolen (req->sv1);	1198	req->ptr1 = SvPVbyte_nolen (req->sv1);
1697	}	1199	}
1698	else	1200	else
1699	{	1201	{
1700	req->type = REQ_FSTAT;	1202	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1203	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1702	}	1204	}
1703		1205
1704	REQ_SEND;	1206	REQ_SEND;
1705	}	1207	}
		1208
		1209	UV
		1210	major (UV dev)
		1211	ALIAS:
		1212	minor = 1
		1213	CODE:
		1214	RETVAL = ix ? major (dev) : minor (dev);
		1215	OUTPUT:
		1216	RETVAL
		1217
		1218	UV
		1219	makedev (UV maj, UV min)
		1220	CODE:
		1221	RETVAL = makedev (maj, min);
		1222	OUTPUT:
		1223	RETVAL
1706		1224
1707	void	1225	void
1708	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1226	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1709	PPCODE:	1227	PPCODE:
1710	{	1228	{
…		…
1712		1230
1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1231	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1232	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1715	req->sv1 = newSVsv (fh_or_path);	1233	req->sv1 = newSVsv (fh_or_path);
1716		1234
1717	if (SvPOK (fh_or_path))	1235	if (SvPOK (req->sv1))
1718	{	1236	{
1719	req->type = REQ_UTIME;	1237	req->type = EIO_UTIME;
1720	req->ptr1 = SvPVbyte_nolen (req->sv1);	1238	req->ptr1 = SvPVbyte_nolen (req->sv1);
1721	}	1239	}
1722	else	1240	else
1723	{	1241	{
1724	req->type = REQ_FUTIME;	1242	req->type = EIO_FUTIME;
1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1243	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1726	}	1244	}
1727		1245
1728	REQ_SEND;	1246	REQ_SEND;
1729	}	1247	}
…		…
1735	dREQ;	1253	dREQ;
1736		1254
1737	req->sv1 = newSVsv (fh_or_path);	1255	req->sv1 = newSVsv (fh_or_path);
1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1256	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1739		1257
1740	if (SvPOK (fh_or_path))	1258	if (SvPOK (req->sv1))
1741	{	1259	{
1742	req->type = REQ_TRUNCATE;	1260	req->type = EIO_TRUNCATE;
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);	1261	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	}	1262	}
1745	else	1263	else
1746	{	1264	{
1747	req->type = REQ_FTRUNCATE;	1265	req->type = EIO_FTRUNCATE;
1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1266	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1749	}	1267	}
1750		1268
1751	REQ_SEND;	1269	REQ_SEND;
1752	}	1270	}
1753		1271
1754	void	1272	void
1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1273	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1274	ALIAS:
		1275	aio_chmod = EIO_CHMOD
		1276	aio_mkdir = EIO_MKDIR
1756	PPCODE:	1277	PPCODE:
1757	{	1278	{
1758	dREQ;	1279	dREQ;
1759		1280
1760	req->mode = mode;	1281	req->int2 = mode;
1761	req->sv1 = newSVsv (fh_or_path);	1282	req->sv1 = newSVsv (fh_or_path);
1762		1283
1763	if (SvPOK (fh_or_path))	1284	if (SvPOK (req->sv1))
1764	{	1285	{
1765	req->type = REQ_CHMOD;	1286	req->type = ix;
1766	req->ptr1 = SvPVbyte_nolen (req->sv1);	1287	req->ptr1 = SvPVbyte_nolen (req->sv1);
1767	}	1288	}
1768	else	1289	else
1769	{	1290	{
1770	req->type = REQ_FCHMOD;	1291	req->type = EIO_FCHMOD;
1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1292	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1772	}	1293	}
1773		1294
1774	REQ_SEND;	1295	REQ_SEND;
1775	}	1296	}
…		…
1782		1303
1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1304	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1305	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1785	req->sv1 = newSVsv (fh_or_path);	1306	req->sv1 = newSVsv (fh_or_path);
1786		1307
1787	if (SvPOK (fh_or_path))	1308	if (SvPOK (req->sv1))
1788	{	1309	{
1789	req->type = REQ_CHOWN;	1310	req->type = EIO_CHOWN;
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);	1311	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791	}	1312	}
1792	else	1313	else
1793	{	1314	{
1794	req->type = REQ_FCHOWN;	1315	req->type = EIO_FCHOWN;
1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1316	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1796	}	1317	}
1797		1318
1798	REQ_SEND;	1319	REQ_SEND;
1799	}	1320	}
1800		1321
1801	void	1322	void
		1323	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1324	PPCODE:
		1325	{
		1326	dREQ;
		1327
		1328	req->type = EIO_READDIR;
		1329	req->sv1 = newSVsv (pathname);
		1330	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1331	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1332
		1333	if (flags & EIO_READDIR_DENTS)
		1334	req->int1 |= EIO_READDIR_CUSTOM2;
		1335
		1336	REQ_SEND;
		1337	}
		1338
		1339	void
1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1340	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1803	ALIAS:	1341	ALIAS:
1804	aio_unlink = REQ_UNLINK	1342	aio_unlink = EIO_UNLINK
1805	aio_rmdir = REQ_RMDIR	1343	aio_rmdir = EIO_RMDIR
1806	aio_readdir = REQ_READDIR	1344	aio_readdir = EIO_READDIR
1807	PPCODE:	1345	PPCODE:
1808	{	1346	{
1809	dREQ;	1347	dREQ;
1810		1348
1811	req->type = ix;	1349	req->type = ix;
…		…
1814		1352
1815	REQ_SEND;	1353	REQ_SEND;
1816	}	1354	}
1817		1355
1818	void	1356	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)	1357	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1834	ALIAS:	1358	ALIAS:
1835	aio_link = REQ_LINK	1359	aio_link = EIO_LINK
1836	aio_symlink = REQ_SYMLINK	1360	aio_symlink = EIO_SYMLINK
1837	aio_rename = REQ_RENAME	1361	aio_rename = EIO_RENAME
1838	PPCODE:	1362	PPCODE:
1839	{	1363	{
1840	dREQ;	1364	dREQ;
1841		1365
1842	req->type = ix;	1366	req->type = ix;
1843	req->sv2 = newSVsv (oldpath);	1367	req->sv1 = newSVsv (oldpath);
		1368	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1369	req->sv2 = newSVsv (newpath);
1844	req->ptr2 = SvPVbyte_nolen (req->sv2);	1370	req->ptr2 = SvPVbyte_nolen (req->sv2);
1845	req->sv1 = newSVsv (newpath);
1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1847		1371
1848	REQ_SEND;	1372	REQ_SEND;
1849	}	1373	}
1850		1374
1851	void	1375	void
1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1376	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1853	PPCODE:	1377	PPCODE:
1854	{	1378	{
1855	dREQ;	1379	dREQ;
1856		1380
1857	req->type = REQ_MKNOD;	1381	req->type = EIO_MKNOD;
1858	req->sv1 = newSVsv (pathname);	1382	req->sv1 = newSVsv (pathname);
1859	req->ptr1 = SvPVbyte_nolen (req->sv1);	1383	req->ptr1 = SvPVbyte_nolen (req->sv1);
1860	req->mode = (mode_t)mode;	1384	req->int2 = (mode_t)mode;
1861	req->offs = dev;	1385	req->offs = dev;
1862		1386
1863	REQ_SEND;	1387	REQ_SEND;
1864	}	1388	}
1865		1389
1866	void	1390	void
		1391	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1392	ALIAS:
		1393	aio_mtouch = EIO_MTOUCH
		1394	aio_msync = EIO_MSYNC
		1395	PPCODE:
		1396	{
		1397	STRLEN svlen;
		1398	char *svptr = SvPVbyte (data, svlen);
		1399	UV len = SvUV (length);
		1400
		1401	if (offset < 0)
		1402	offset += svlen;
		1403
		1404	if (offset < 0 || offset > svlen)
		1405	croak ("offset outside of scalar");
		1406
		1407	if (!SvOK (length) || len + offset > svlen)
		1408	len = svlen - offset;
		1409
		1410	{
		1411	dREQ;
		1412
		1413	req->type = ix;
		1414	req->sv2 = SvREFCNT_inc (data);
		1415	req->ptr2 = (char *)svptr + offset;
		1416	req->size = len;
		1417	req->int1 = flags;
		1418
		1419	REQ_SEND;
		1420	}
		1421	}
		1422
		1423	void
		1424	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1425	PPCODE:
		1426	{
		1427	STRLEN svlen;
		1428	char *svptr = SvPVbyte (data, svlen);
		1429	UV len = SvUV (length);
		1430
		1431	if (offset < 0)
		1432	offset += svlen;
		1433
		1434	if (offset < 0 || offset > svlen)
		1435	croak ("offset outside of scalar");
		1436
		1437	if (!SvOK (length) || len + offset > svlen)
		1438	len = svlen - offset;
		1439
		1440	{
		1441	dREQ;
		1442
		1443	req->type = EIO_MLOCK;
		1444	req->sv2 = SvREFCNT_inc (data);
		1445	req->ptr2 = (char *)svptr + offset;
		1446	req->size = len;
		1447
		1448	REQ_SEND;
		1449	}
		1450	}
		1451
		1452	void
		1453	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1454	PPCODE:
		1455	{
		1456	dREQ;
		1457
		1458	req->type = EIO_MLOCKALL;
		1459	req->int1 = flags;
		1460
		1461	REQ_SEND;
		1462	}
		1463
		1464	void
1867	aio_busy (double delay, SV *callback=&PL_sv_undef)	1465	aio_busy (double delay, SV *callback=&PL_sv_undef)
1868	PPCODE:	1466	PPCODE:
1869	{	1467	{
1870	dREQ;	1468	dREQ;
1871		1469
1872	req->type = REQ_BUSY;	1470	req->type = EIO_BUSY;
1873	req->nv1 = delay < 0. ? 0. : delay;	1471	req->nv1 = delay < 0. ? 0. : delay;
1874		1472
1875	REQ_SEND;	1473	REQ_SEND;
1876	}	1474	}
1877		1475
1878	void	1476	void
1879	aio_group (SV *callback=&PL_sv_undef)	1477	aio_group (SV *callback=&PL_sv_undef)
1880	PROTOTYPE: ;$
1881	PPCODE:	1478	PPCODE:
1882	{	1479	{
1883	dREQ;	1480	dREQ;
1884		1481
1885	req->type = REQ_GROUP;	1482	req->type = EIO_GROUP;
1886		1483
1887	req_send (req);	1484	req_submit (req);
1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1485	XPUSHs (req_sv (req, aio_grp_stash));
1889	}	1486	}
1890		1487
1891	void	1488	void
1892	aio_nop (SV *callback=&PL_sv_undef)	1489	aio_nop (SV *callback=&PL_sv_undef)
		1490	ALIAS:
		1491	aio_nop = EIO_NOP
		1492	aio_sync = EIO_SYNC
1893	PPCODE:	1493	PPCODE:
1894	{	1494	{
1895	dREQ;	1495	dREQ;
1896		1496
1897	req->type = REQ_NOP;	1497	req->type = ix;
1898		1498
1899	REQ_SEND;	1499	REQ_SEND;
1900	}	1500	}
1901		1501
1902	int	1502	int
1903	aioreq_pri (int pri = 0)	1503	aioreq_pri (int pri = 0)
1904	PROTOTYPE: ;$
1905	CODE:	1504	CODE:
1906	RETVAL = next_pri - PRI_BIAS;	1505	RETVAL = next_pri;
1907	if (items > 0)	1506	if (items > 0)
1908	{	1507	{
1909	if (pri < PRI_MIN) pri = PRI_MIN;	1508	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1910	if (pri > PRI_MAX) pri = PRI_MAX;	1509	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1911	next_pri = pri + PRI_BIAS;	1510	next_pri = pri;
1912	}	1511	}
1913	OUTPUT:	1512	OUTPUT:
1914	RETVAL	1513	RETVAL
1915		1514
1916	void	1515	void
1917	aioreq_nice (int nice = 0)	1516	aioreq_nice (int nice = 0)
1918	CODE:	1517	CODE:
1919	nice = next_pri - nice;	1518	nice = next_pri - nice;
1920	if (nice < PRI_MIN) nice = PRI_MIN;	1519	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1921	if (nice > PRI_MAX) nice = PRI_MAX;	1520	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1922	next_pri = nice + PRI_BIAS;	1521	next_pri = nice;
1923		1522
1924	void	1523	void
1925	flush ()	1524	flush ()
1926	PROTOTYPE:
1927	CODE:	1525	CODE:
1928	while (nreqs)	1526	while (eio_nreqs ())
1929	{	1527	{
1930	poll_wait ();	1528	poll_wait ();
1931	poll_cb ();	1529	poll_cb ();
1932	}	1530	}
1933		1531
1934	int	1532	int
1935	poll()	1533	poll ()
1936	PROTOTYPE:
1937	CODE:	1534	CODE:
1938	poll_wait ();	1535	poll_wait ();
1939	RETVAL = poll_cb ();	1536	RETVAL = poll_cb ();
1940	OUTPUT:	1537	OUTPUT:
1941	RETVAL	1538	RETVAL
1942		1539
1943	int	1540	int
1944	poll_fileno()	1541	poll_fileno ()
1945	PROTOTYPE:
1946	CODE:	1542	CODE:
1947	RETVAL = respipe [0];	1543	RETVAL = s_epipe_fd (&respipe);
1948	OUTPUT:	1544	OUTPUT:
1949	RETVAL	1545	RETVAL
1950		1546
1951	int	1547	int
1952	poll_cb(...)	1548	poll_cb (...)
1953	PROTOTYPE:	1549	PROTOTYPE:
1954	CODE:	1550	CODE:
1955	RETVAL = poll_cb ();	1551	RETVAL = poll_cb ();
1956	OUTPUT:	1552	OUTPUT:
1957	RETVAL	1553	RETVAL
1958		1554
1959	void	1555	void
1960	poll_wait()	1556	poll_wait ()
1961	PROTOTYPE:
1962	CODE:	1557	CODE:
1963	poll_wait ();	1558	poll_wait ();
1964		1559
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	1560	int
2003	nreqs()	1561	nreqs ()
2004	PROTOTYPE:
2005	CODE:	1562	CODE:
2006	RETVAL = nreqs;	1563	RETVAL = eio_nreqs ();
2007	OUTPUT:	1564	OUTPUT:
2008	RETVAL	1565	RETVAL
2009		1566
2010	int	1567	int
2011	nready()	1568	nready ()
2012	PROTOTYPE:
2013	CODE:	1569	CODE:
2014	RETVAL = get_nready ();	1570	RETVAL = eio_nready ();
2015	OUTPUT:	1571	OUTPUT:
2016	RETVAL	1572	RETVAL
2017		1573
2018	int	1574	int
2019	npending()	1575	npending ()
2020	PROTOTYPE:
2021	CODE:	1576	CODE:
2022	RETVAL = get_npending ();	1577	RETVAL = eio_npending ();
2023	OUTPUT:	1578	OUTPUT:
2024	RETVAL	1579	RETVAL
2025		1580
2026	int	1581	int
2027	nthreads()	1582	nthreads ()
2028	PROTOTYPE:
2029	CODE:	1583	CODE:
2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1584	RETVAL = eio_nthreads ();
2031	RETVAL = started;
2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2033	OUTPUT:	1585	OUTPUT:
2034	RETVAL	1586	RETVAL
2035		1587
		1588	int
		1589	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1590	CODE:
		1591	RETVAL = posix_fadvise (fh, offset, length, advice);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595	ssize_t
		1596	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1597	CODE:
		1598	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	void
		1603	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1604	PPCODE:
		1605	sv_unmagic (scalar, MMAP_MAGIC);
		1606	{
		1607	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1608	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1609	if (addr == (void *)-1)
		1610	XSRETURN_NO;
		1611
		1612	sv_force_normal (scalar);
		1613
		1614	/* we store the length in mg_obj, as namlen is I32 :/ */
		1615	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1616	->mg_obj = (SV *)length;
		1617
		1618	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1619
		1620	if (!(prot & PROT_WRITE))
		1621	SvREADONLY_on (scalar);
		1622
		1623	if (SvLEN (scalar))
		1624	Safefree (SvPVX (scalar));
		1625
		1626	SvPVX (scalar) = (char *)addr;
		1627	SvCUR_set (scalar, length);
		1628	SvLEN_set (scalar, 0);
		1629	SvPOK_only (scalar);
		1630
		1631	XSRETURN_YES;
		1632	}
		1633
		1634	void
		1635	munmap (SV *scalar)
		1636	CODE:
		1637	sv_unmagic (scalar, MMAP_MAGIC);
		1638
		1639	int
		1640	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1641	ALIAS:
		1642	mprotect = 1
		1643	CODE:
		1644	{
		1645	STRLEN svlen;
		1646	void *addr = SvPVbyte (scalar, svlen);
		1647	size_t len = SvUV (length);
		1648
		1649	if (offset < 0)
		1650	offset += svlen;
		1651
		1652	if (offset < 0 || offset > svlen)
		1653	croak ("offset outside of scalar");
		1654
		1655	if (!SvOK (length) || len + offset > svlen)
		1656	len = svlen - offset;
		1657
		1658	addr = (void *)(((intptr_t)addr) + offset);
		1659	eio_page_align (&addr, &len);
		1660
		1661	switch (ix)
		1662	{
		1663	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1664	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1665	}
		1666	}
		1667	OUTPUT:
		1668	RETVAL
		1669
		1670	int
		1671	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1672	CODE:
		1673	{
		1674	STRLEN svlen;
		1675	void *addr = SvPVbyte (scalar, svlen);
		1676	size_t len = SvUV (length);
		1677
		1678	if (offset < 0)
		1679	offset += svlen;
		1680
		1681	if (offset < 0 || offset > svlen)
		1682	croak ("offset outside of scalar");
		1683
		1684	if (!SvOK (length) || len + offset > svlen)
		1685	len = svlen - offset;
		1686
		1687	addr = (void *)(((intptr_t)addr) + offset);
		1688	eio_page_align (&addr, &len);
		1689	#if _POSIX_MEMLOCK_RANGE
		1690	RETVAL = munlock (addr, len);
		1691	#else
		1692	RETVAL = ((errno = ENOSYS), -1);
		1693	#endif
		1694	}
		1695	OUTPUT:
		1696	RETVAL
		1697
		1698	int
		1699	munlockall ()
		1700	CODE:
		1701	#if _POSIX_MEMLOCK
		1702	munlockall ();
		1703	#else
		1704	RETVAL = -1;
		1705	errno = ENOSYS;
		1706	#endif
		1707	OUTPUT:
		1708	RETVAL
		1709
		1710	void _on_next_submit (SV *cb)
		1711	CODE:
		1712	SvREFCNT_dec (on_next_submit);
		1713	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1714
2036	PROTOTYPES: DISABLE	1715	PROTOTYPES: DISABLE
2037		1716
2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1717	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2039		1718
2040	void	1719	void
2041	cancel (aio_req_ornot req)	1720	cancel (aio_req_ornot req)
2042	CODE:	1721	CODE:
2043	req_cancel (req);	1722	eio_cancel (req);
2044		1723
2045	void	1724	void
2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1725	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2047	CODE:	1726	PPCODE:
		1727	{
		1728	if (GIMME_V != G_VOID)
		1729	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1730
		1731	if (items > 1)
		1732	{
		1733	SV *cb_cv =get_cb (callback);
		1734
2048	SvREFCNT_dec (req->callback);	1735	SvREFCNT_dec (req->callback);
2049	req->callback = newSVsv (callback);	1736	req->callback = SvREFCNT_inc (cb_cv);
		1737	}
		1738	}
2050		1739
2051	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1740	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2052		1741
2053	void	1742	void
2054	add (aio_req grp, ...)	1743	add (aio_req grp, ...)
2055	PPCODE:	1744	PPCODE:
2056	{	1745	{
2057	int i;	1746	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		1747
2063	if (grp->int1 == 2)	1748	if (grp->int1 == 2)
2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1749	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2065		1750
2066	for (i = 1; i < items; ++i )	1751	for (i = 1; i < items; ++i )
2067	{	1752	{
		1753	aio_req req;
		1754
2068	if (GIMME_V != G_VOID)	1755	if (GIMME_V != G_VOID)
2069	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1756	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2070		1757
2071	req = SvAIO_REQ (ST (i));	1758	req = SvAIO_REQ (ST (i));
2072		1759
2073	if (req)	1760	if (req)
2074	{	1761	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	}	1762	}
2087	}	1763	}
2088		1764
2089	void	1765	void
2090	cancel_subs (aio_req_ornot req)	1766	cancel_subs (aio_req_ornot req)
…		…
2099	AV *av;	1775	AV *av;
2100		1776
2101	grp->errorno = errno;	1777	grp->errorno = errno;
2102		1778
2103	av = newAV ();	1779	av = newAV ();
		1780	av_extend (av, items - 1);
2104		1781
2105	for (i = 1; i < items; ++i )	1782	for (i = 1; i < items; ++i )
2106	av_push (av, newSVsv (ST (i)));	1783	av_push (av, newSVsv (ST (i)));
2107		1784
2108	SvREFCNT_dec (grp->sv1);	1785	SvREFCNT_dec (grp->sv1);
…		…
2115	grp->errorno = errorno;	1792	grp->errorno = errorno;
2116		1793
2117	void	1794	void
2118	limit (aio_req grp, int limit)	1795	limit (aio_req grp, int limit)
2119	CODE:	1796	CODE:
2120	grp->int2 = limit;	1797	eio_grp_limit (grp, limit);
2121	aio_grp_feed (grp);
2122		1798
2123	void	1799	void
2124	feed (aio_req grp, SV *callback=&PL_sv_undef)	1800	feed (aio_req grp, SV *callback=&PL_sv_undef)
2125	CODE:	1801	CODE:
2126	{	1802	{
2127	SvREFCNT_dec (grp->sv2);	1803	SvREFCNT_dec (grp->sv2);
2128	grp->sv2 = newSVsv (callback);	1804	grp->sv2 = newSVsv (callback);
		1805	grp->feed = aio_grp_feed;
2129		1806
2130	if (grp->int2 <= 0)	1807	if (grp->int2 <= 0)
2131	grp->int2 = 2;	1808	grp->int2 = 2;
2132		1809
2133	aio_grp_feed (grp);	1810	eio_grp_limit (grp, grp->int2);
2134	}	1811	}
2135		1812

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