ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.110 by root, Sun Dec 2 20:54:33 2007 UTC vs.
Revision 1.257 by root, Tue Jul 17 23:20:09 2018 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"
…		…
13	#include <sys/stat.h>	13	#include <sys/stat.h>
14	#include <limits.h>	14	#include <limits.h>
15	#include <fcntl.h>	15	#include <fcntl.h>
16	#include <sched.h>	16	#include <sched.h>
17		17
		18	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		19	# include <sys/mman.h>
		20	#endif
		21
		22	/* the incompetent fool that created musl keeps __linux__, refuses
		23	* to implement any linux standard apis, and also has no way to test
		24	* for his broken iplementation. don't complain to me if this fails
		25	* for you.
		26	*/
		27	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		28	# include <linux/fs.h>
		29	# ifdef FS_IOC_FIEMAP
		30	# include <linux/types.h>
		31	# include <linux/fiemap.h>
		32	# define HAVE_FIEMAP 1
		33	# endif
		34	#endif
		35
		36	/* perl namespace pollution */
		37	#undef VERSION
		38
		39	/* perl stupidly overrides readdir and maybe others */
		40	/* with thread-unsafe versions, imagine that :( */
		41	#undef readdir
		42	#undef opendir
		43	#undef closedir
		44
18	#ifdef _WIN32	45	#ifdef _WIN32
19		46
20	# define SIGIO 0	47	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	48
22	#undef malloc	49	#undef malloc
23	#undef free	50	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	51	#undef open
27	# undef read	52	#undef read
28	# undef write	53	#undef write
29	# undef send	54	#undef send
30	# undef recv	55	#undef recv
31	# undef stat	56	#undef stat
		57	#undef lstat
32	# undef fstat	58	#undef fstat
33	# define lstat stat
34	# undef truncate	59	#undef truncate
35	# undef ftruncate	60	#undef ftruncate
36	# undef open	61	#undef open
		62	#undef link
37	# undef close	63	#undef close
38	# undef unlink	64	#undef unlink
		65	#undef mkdir
39	# undef rmdir	66	#undef rmdir
40	# undef rename	67	#undef rename
41	# undef lseek	68	#undef lseek
		69	#undef opendir
		70	#undef readdir
		71	#undef closedir
		72	#undef chmod
		73	#undef fchmod
		74	#undef dup
		75	#undef dup2
		76	#undef abort
		77	#undef pipe
42		78
43	# define chown(a,b,c) (errno = ENOSYS, -1)	79	#define EIO_STRUCT_STAT struct _stati64
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	80	#define EIO_STRUCT_STATI64
45	# define fchmod(a,b) (errno = ENOSYS, -1)
46	# define symlink(a,b) (errno = ENOSYS, -1)
47	# define readlink(a,b,c) (errno = ENOSYS, -1)
48	# define mknod(a,b,c) (errno = ENOSYS, -1)
49	# define truncate(a,b) (errno = ENOSYS, -1)
50	# define ftruncate(fd,o) chsize ((fd), (o))
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		81
57	#else	82	#else
58		83
59	# include "autoconf/config.h"
60	# include <sys/time.h>	84	#include <sys/time.h>
61	# include <sys/select.h>	85	#include <sys/select.h>
62	# include <unistd.h>	86	#include <unistd.h>
63	# include <utime.h>	87	#include <utime.h>
64	# include <signal.h>	88	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		89
67	#endif	90	#define EIO_STRUCT_STAT Stat_t
68		91
69	#if HAVE_SENDFILE	92	#endif
70	# if __linux	93
		94	/*****************************************************************************/
		95
		96	#if __GNUC__ >= 3
		97	# define expect(expr,value) __builtin_expect ((expr),(value))
		98	#else
		99	# define expect(expr,value) (expr)
		100	#endif
		101
		102	#define expect_false(expr) expect ((expr) != 0, 0)
		103	#define expect_true(expr) expect ((expr) != 0, 1)
		104
		105	/*****************************************************************************/
		106
		107	#include "libeio/config.h"
		108
		109	#include "schmorp.h"
		110
		111	#if HAVE_EVENTFD
71	# include <sys/sendfile.h>	112	# include <sys/eventfd.h>
72	# elif __freebsd	113	#endif
73	# include <sys/socket.h>	114
		115	#if HAVE_TIMERFD
74	# include <sys/uio.h>	116	# include <sys/timerfd.h>
75	# elif __hpux	117	#endif
		118
		119	#if HAVE_RLIMITS
		120	#include <sys/time.h>
76	# include <sys/socket.h>	121	#include <sys/resource.h>
77	# elif __solaris /* not yet */	122	#endif
78	# include <sys/sendfile.h>	123
		124	typedef SV SV8; /* byte-sv, used for argument-checking */
		125	typedef int aio_rfd; /* read file desriptor */
		126	typedef int aio_wfd; /* write file descriptor */
		127
		128	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		129
		130	#define EIO_REQ_MEMBERS \
		131	SV *callback; \
		132	SV *sv1, *sv2; \
		133	SV *sv3, *sv4; \
		134	STRLEN stroffset; \
		135	SV *self;
		136
		137	#define EIO_NO_WRAPPERS 1
		138
		139	#include "libeio/eio.h"
		140
		141	static int req_invoke (eio_req *req);
		142	#define EIO_FINISH(req) req_invoke (req)
		143	static void req_destroy (eio_req *grp);
		144	#define EIO_DESTROY(req) req_destroy (req)
		145
		146	#include "libeio/eio.c"
		147
		148	#if !HAVE_POSIX_FADVISE
		149	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		150	#endif
		151
		152	#if !HAVE_POSIX_MADVISE
		153	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		154	#endif
		155
		156	#ifndef MAP_ANONYMOUS
		157	# ifdef MAP_ANON
		158	# define MAP_ANONYMOUS MAP_ANON
79	# else	159	# else
80	# error sendfile support requested but not available	160	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81	# endif	161	# endif
82	#endif	162	#endif
83		163
84	/* number of seconds after which idle threads exit */	164	/* defines all sorts of constants to 0 unless they are already defined */
85	#define IDLE_TIMEOUT 10	165	/* also provides const_iv_ and const_niv_ macros for them */
		166	#include "def0.h"
86		167
87	/* used for struct dirent, AIX doesn't provide it */	168	#ifndef makedev
88	#ifndef NAME_MAX	169	# define makedev(maj,min) (((maj) << 8) | (min))
89	# define NAME_MAX 4096
90	#endif	170	#endif
91		171	#ifndef major
92	/* buffer size for various temporary buffers */	172	# define major(dev) ((dev) >> 8)
93	#define AIO_BUFSIZE 65536
94
95	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8
97	# define SvVAL64 SvIV
98	#else
99	# define SvVAL64 SvNV
100	#endif	173	#endif
		174	#ifndef minor
		175	# define minor(dev) ((dev) & 0xff)
		176	#endif
101		177
102	static HV *stash;	178	#if PAGESIZE <= 0
		179	# define PAGESIZE sysconf (_SC_PAGESIZE)
		180	#endif
103		181
104	#define dBUF \	182	/*****************************************************************************/
105	char *aio_buf; \	183
106	X_LOCK (wrklock); \	184	#if !_POSIX_MAPPED_FILES
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	185	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
108	X_UNLOCK (wrklock); \	186	# define munmap(addr,length) EIO_ENOSYS ()
109	if (!aio_buf) \	187	#endif
		188
		189	#if !_POSIX_MEMORY_PROTECTION
		190	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		191	#endif
		192
		193	#if !MREMAP_MAYMOVE
		194	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		195	#endif
		196
		197	#define FOREIGN_MAGIC PERL_MAGIC_ext
		198
		199	static int ecb_cold
		200	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		201	{
		202	int old_errno = errno;
		203	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		204	errno = old_errno;
		205
		206	mg->mg_obj = 0; /* just in case */
		207
		208	SvREADONLY_off (sv);
		209
		210	if (SvPVX (sv) != mg->mg_ptr)
		211	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		212
		213	SvCUR_set (sv, 0);
		214	SvPVX (sv) = 0;
		215	SvOK_off (sv);
		216
110	return -1;	217	return 0;
		218	}
111		219
112	typedef SV SV8; /* byte-sv, used for argument-checking */	220	static MGVTBL mmap_vtbl = {
113		221	0, 0, 0, 0, mmap_free
114	enum {
115	REQ_QUIT,
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};	222	};
131		223
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	224	static int ecb_cold
133	#define AIO_GRP_KLASS "IO::AIO::GRP"	225	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
134
135	typedef struct aio_cb
136	{	226	{
137	struct aio_cb *volatile next;	227	free (mg->mg_ptr);
		228	mg->mg_obj = 0; /* just in case */
138		229
139	SV *callback;	230	SvREADONLY_off (sv);
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		231
147	STRLEN stroffset;	232	if (SvPVX (sv) != mg->mg_ptr)
148	int type;	233	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		234
153	unsigned char flags;	235	SvCUR_set (sv, 0);
154	unsigned char pri;	236	SvPVX (sv) = 0;
		237	SvOK_off (sv);
155		238
156	SV *self; /* the perl counterpart of this request, if any */	239	return 0;
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	240	}
158	} aio_cb;
159		241
160	enum {	242	static MGVTBL sysfree_vtbl = {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */	243	0, 0, 0, 0, sysfree_free
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};	244	};
165		245
166	typedef aio_cb *aio_req;	246	/*****************************************************************************/
167	typedef aio_cb *aio_req_ornot;
168		247
169	enum {	248	/* helper: set scalar to foreign ptr with custom free */
170	PRI_MIN = -4,	249	static void
171	PRI_MAX = 4,	250	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
172
173	DEFAULT_PRI = 0,
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177
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	{	251	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	252	sv_force_normal (sv);
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189		253
190	static thread_t main_tid;	254	/* we store the length in mg_obj, as namlen is I32 :/ */
191	static int main_sig;	255	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
192	static int block_sig_level;	256	->mg_obj = (SV *)length;
193		257
194	void block_sig ()	258	SvUPGRADE (sv, SVt_PV); /* nop... */
195	{
196	sigset_t ss;
197		259
198	if (block_sig_level++)	260	if (SvLEN (sv))
		261	Safefree (SvPVX (sv));
		262
		263	SvPVX (sv) = (char *)addr;
		264	SvCUR_set (sv, length);
		265	SvLEN_set (sv, 0);
		266	SvPOK_only (sv);
		267	}
		268
		269	static void
		270	sv_clear_foreign (SV *sv)
		271	{
		272	/* todo: iterate over magic and only free ours, but of course */
		273	/* the perl5porters will call that (correct) behaviour buggy */
		274	sv_unmagic (sv, FOREIGN_MAGIC);
		275	}
		276
		277	/*****************************************************************************/
		278
		279	static void
		280	fiemap (eio_req *req)
		281	{
		282	req->result = -1;
		283
		284	#if HAVE_FIEMAP
		285	/* assume some c99 */
		286	struct fiemap *fiemap = 0;
		287	size_t end_offset;
		288	int count = req->int3;
		289
		290	req->flags |= EIO_FLAG_PTR1_FREE;
		291
		292	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		293	/* increase in 3.5kb steps */
		294	if (count < 0)
		295	count = 8;
		296
		297	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		298	errno = ENOMEM;
		299	if (!fiemap)
199	return;	300	return;
200		301
201	if (!main_sig)	302	req->ptr1 = fiemap;
		303
		304	fiemap->fm_start = req->offs;
		305	fiemap->fm_length = req->size;
		306	fiemap->fm_flags = req->int2;
		307	fiemap->fm_extent_count = count;
		308
		309	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
202	return;	310	return;
203		311
204	sigemptyset (&ss);	312	if (req->int3 >= 0 /* not autosizing */
205	sigaddset (&ss, main_sig);	313	|| !fiemap->fm_mapped_extents /* no more extents */
206	pthread_sigmask (SIG_BLOCK, &ss, 0);	314	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
207	}	315	goto done;
208		316
209	void unblock_sig ()	317	/* else we have to loop -
210	{	318	* it would be tempting (actually I tried that first) to just query the
211	sigset_t ss;	319	* number of extents needed, but linux often feels like not returning all
		320	* extents, without telling us it left any out. this complicates
		321	* this quite a bit.
		322	*/
212		323
213	if (--block_sig_level)	324	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
214	return;
215		325
216	if (!main_sig)	326	for (;;)
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	{	327	{
249	closedir (wrk->dirp);	328	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
250	wrk->dirp = 0;	329	char scratch[3072];
251	}	330	struct fiemap *incmap = (struct fiemap *)scratch;
252		331
253	if (wrk->dbuf)	332	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
254	{	333	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
255	free (wrk->dbuf);	334	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
256	wrk->dbuf = 0;	335	incmap->fm_flags = fiemap->fm_flags;
257	}	336	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
258	}
259		337
260	static void worker_free (worker *wrk)	338	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
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;	339	return;
355		340
356	--q->size;	341	if (!incmap->fm_mapped_extents)
		342	goto done;
357		343
358	for (pri = NUM_PRI; pri--; )	344	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
359	{	345	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360	aio_req req = q->qs[pri];	346	errno = ENOMEM;
361
362	if (req)	347	if (!fiemap)
		348	return;
		349
		350	req->ptr1 = fiemap;
		351
		352	for (count = 0; count < incmap->fm_mapped_extents; ++count)
363	{	353	{
364	if (!(q->qs[pri] = req->next))	354	struct fiemap_extent *e = incmap->fm_extents + count;
365	q->qe[pri] = 0;
366		355
367	return req;	356	if (e->fe_logical + e->fe_length >= end_offset)
		357	goto done;
		358
		359	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		360
		361	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		362	goto done;
		363
368	}	364	}
369	}	365	}
370		366
371	abort ();	367	done:
372	}	368	req->result = 0;
373		369
374	static int poll_cb ();	370	#else
375	static int req_invoke (aio_req req);	371	errno = ENOSYS;
		372	#endif
		373	}
		374
		375	/*****************************************************************************/
		376
		377	enum {
		378	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		379	};
		380
		381	typedef eio_req *aio_req;
		382	typedef eio_req *aio_req_ornot;
		383	typedef eio_wd aio_wd;
		384
		385	static SV *on_next_submit;
		386	static int next_pri = EIO_PRI_DEFAULT;
		387	static int max_outstanding;
		388
		389	static s_epipe respipe;
		390
376	static void req_destroy (aio_req req);	391	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	392	static void req_cancel (aio_req req);
378		393
		394	static void
		395	want_poll (void)
		396	{
		397	/* write a dummy byte to the pipe so fh becomes ready */
		398	s_epipe_signal (&respipe);
		399	}
		400
		401	static void
		402	done_poll (void)
		403	{
		404	/* read any signals sent by the worker threads */
		405	s_epipe_drain (&respipe);
		406	}
		407
379	/* must be called at most once */	408	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	409	static SV *
		410	req_sv (aio_req req, HV *stash)
381	{	411	{
382	if (!req->self)	412	if (!req->self)
383	{	413	{
384	req->self = (SV *)newHV ();	414	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	415	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	416	}
387		417
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	418	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	419	}
390		420
391	static aio_req SvAIO_REQ (SV *sv)	421	static SV *
		422	newSVaio_wd (aio_wd wd)
		423	{
		424	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		425	}
		426
		427	static aio_req
		428	SvAIO_REQ (SV *sv)
392	{	429	{
393	MAGIC *mg;	430	MAGIC *mg;
394		431
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	432	if (!SvROK (sv)
		433	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		434	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		435	&& SvSTASH (SvRV (sv)) != aio_req_stash
		436	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	437	croak ("object of class IO::AIO::REQ expected");
397		438
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	439	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		440
400	return mg ? (aio_req)mg->mg_ptr : 0;	441	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	442	}
402		443
		444	static aio_wd
		445	SvAIO_WD (SV *sv)
		446	{
		447	if (!SvROK (sv)
		448	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		449	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		450	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		451
		452	return (aio_wd)(long)SvIVX (SvRV (sv));
		453	}
		454
		455	static SV *
		456	newmortalFH (int fd, int flags)
		457	{
		458	if (fd < 0)
		459	return &PL_sv_undef;
		460
		461	GV *gv = (GV *)sv_newmortal ();
		462	char sym[64];
		463	int symlen;
		464
		465	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		466	gv_init (gv, aio_stash, sym, symlen, 0);
		467
		468	symlen = snprintf (
		469	sym,
		470	sizeof (sym),
		471	"%s&=%d",
		472	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		473	fd
		474	);
		475
		476	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		477	? (SV *)gv : &PL_sv_undef;
		478	}
		479
		480	static void
403	static void aio_grp_feed (aio_req grp)	481	aio_grp_feed (aio_req grp)
404	{	482	{
405	block_sig ();	483	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	484	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	485	dSP;
414		486
415	ENTER;	487	ENTER;
416	SAVETMPS;	488	SAVETMPS;
417	PUSHMARK (SP);	489	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	490	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	491	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	492	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	493	SPAGAIN;
422	FREETMPS;	494	FREETMPS;
423	LEAVE;	495	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	}	496	}
434
435	unblock_sig ();
436	}	497	}
437		498
438	static void aio_grp_dec (aio_req grp)	499	static void
		500	req_submit (eio_req *req)
439	{	501	{
440	--grp->size;	502	eio_submit (req);
441		503
442	/* call feeder, if applicable */	504	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	505	{
448	block_sig ();	506	dSP;
		507	SV *cb = sv_2mortal (on_next_submit);
449		508
450	if (!req_invoke (grp))	509	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		510
457	req_destroy (grp);	511	PUSHMARK (SP);
458	unblock_sig ();	512	PUTBACK;
		513	call_sv (cb, G_DISCARD | G_EVAL);
459	}	514	}
460	}	515	}
461		516
		517	static int
462	static int req_invoke (aio_req req)	518	req_invoke (eio_req *req)
463	{	519	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	520	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	521	SvREADONLY_off (req->sv2);
468		522
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	523	if (!EIO_CANCELLED (req) && req->callback)
470	{	524	{
		525	dSP;
		526	static SV *sv_result_cache; /* caches the result integer SV */
		527	SV *sv_result;
		528
471	ENTER;	529	ENTER;
472	SAVETMPS;	530	SAVETMPS;
473	PUSHMARK (SP);	531	PUSHMARK (SP);
474	EXTEND (SP, 1);	532	EXTEND (SP, 1);
475		533
		534	/* do not recreate the result IV from scratch each time */
		535	if (expect_true (sv_result_cache))
		536	{
		537	sv_result = sv_result_cache; sv_result_cache = 0;
		538	SvIV_set (sv_result, req->result);
		539	SvIOK_only (sv_result);
		540	}
		541	else
		542	{
		543	sv_result = newSViv (req->result);
		544	SvREADONLY_on (sv_result);
		545	}
		546
476	switch (req->type)	547	switch (req->type)
477	{	548	{
		549	case EIO_WD_OPEN:
		550	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		551	break;
		552
478	case REQ_READDIR:	553	case EIO_READDIR:
479	{	554	{
480	SV *rv = &PL_sv_undef;	555	SV *rv = &PL_sv_undef;
481		556
482	if (req->result >= 0)	557	if (req->result >= 0)
483	{	558	{
484	int i;	559	int i;
485	char *buf = req->ptr2;	560	char *names = (char *)req->ptr2;
		561	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	562	AV *av = newAV ();
487		563
488	av_extend (av, req->result - 1);	564	av_extend (av, req->result - 1);
489		565
490	for (i = 0; i < req->result; ++i)	566	for (i = 0; i < req->result; ++i)
491	{	567	{
492	SV *sv = newSVpv (buf, 0);	568	if (req->int1 & EIO_READDIR_DENTS)
		569	{
		570	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		571
		572	if (req->int1 & EIO_READDIR_CUSTOM2)
		573	{
		574	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		575	AV *avent = newAV ();
		576
		577	av_extend (avent, 2);
		578
		579	if (!sv_type [ent->type])
		580	{
		581	sv_type [ent->type] = newSViv (ent->type);
		582	SvREADONLY_on (sv_type [ent->type]);
		583	}
		584
		585	av_store (avent, 0, namesv);
		586	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		587	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		588
		589	av_store (av, i, newRV_noinc ((SV *)avent));
		590	}
		591	else
494	av_store (av, i, sv);	592	av_store (av, i, namesv);
		593
		594	++ent;
		595	}
		596	else
		597	{
		598	SV *name = newSVpv (names, 0);
		599	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	600	names += SvCUR (name) + 1;
		601	}
496	}	602	}
497		603
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	604	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	605	}
500		606
501	PUSHs (rv);	607	PUSHs (rv);
		608
		609	if (req->int1 & EIO_READDIR_CUSTOM1)
		610	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	611	}
503	break;	612	break;
504		613
505	case REQ_OPEN:	614	case EIO_OPEN:
		615	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		616	break;
		617
		618	case EIO_STATVFS:
		619	case EIO_FSTATVFS:
506	{	620	{
507	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	621	SV *rv = &PL_sv_undef;
509		622
		623	#ifndef _WIN32
510	if (req->result >= 0)	624	if (req->result >= 0)
511	{	625	{
		626	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
512	GV *gv = (GV *)sv_newmortal ();	627	HV *hv = newHV ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	628	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
514	char sym [64];	629	* chooses to make it a struct.
515	int symlen;
516		630	*/
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	631	unsigned long fsid = 0;
518	gv_init (gv, stash, sym, symlen, 0);	632	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
519		633
520	symlen = snprintf (	634	rv = sv_2mortal (newRV_noinc ((SV *)hv));
521	sym,
522	sizeof (sym),
523	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result
526	);
527		635
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	636	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
529	fh = (SV *)gv;	637	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		638	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		639	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		640	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		641	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		642	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		643	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		644	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		645	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		646	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
530	}	647	}
		648	#endif
531		649
532	PUSHs (fh);	650	PUSHs (rv);
533	}	651	}
		652
534	break;	653	break;
535		654
536	case REQ_GROUP:	655	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	656	req->int1 = 2; /* mark group as finished */
538		657
539	if (req->sv1)	658	if (req->sv1)
540	{	659	{
541	int i;	660	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	664	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	665	PUSHs (*av_fetch (av, i, 0));
547	}	666	}
548	break;	667	break;
549		668
550	case REQ_NOP:	669	case EIO_NOP:
551	case REQ_BUSY:	670	case EIO_BUSY:
552	break;	671	break;
553		672
554	case REQ_READLINK:	673	case EIO_READLINK:
		674	case EIO_REALPATH:
555	if (req->result > 0)	675	if (req->result > 0)
		676	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		677	break;
		678
		679	case EIO_STAT:
		680	case EIO_LSTAT:
		681	case EIO_FSTAT:
		682	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		683
		684	if (!(PL_laststatval = req->result))
		685	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		686	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		687
		688	PUSHs (sv_result);
		689	break;
		690
		691	case EIO_SEEK:
		692	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		693	break;
		694
		695	case EIO_READ:
		696	{
		697	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		698	*SvEND (req->sv2) = 0;
		699	SvPOK_only (req->sv2);
		700	SvSETMAGIC (req->sv2);
		701	PUSHs (sv_result);
		702	}
		703	break;
		704
		705	case EIO_SLURP:
		706	{
		707	if (req->result >= 0)
		708	{
		709	/* if length was originally not known, we steal the malloc'ed memory */
		710	if (req->flags & EIO_FLAG_PTR2_FREE)
		711	{
		712	req->flags &= ~EIO_FLAG_PTR2_FREE;
		713	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		714	}
		715	else
		716	{
		717	SvCUR_set (req->sv2, req->result);
		718	*SvEND (req->sv2) = 0;
		719	SvPOK_only (req->sv2);
		720	}
		721
		722	SvSETMAGIC (req->sv2);
		723	}
		724
		725	PUSHs (sv_result);
		726	}
		727	break;
		728
		729	case EIO_CUSTOM:
		730	if (req->feed == fiemap)
556	{	731	{
557	SvCUR_set (req->sv2, req->result);	732	#if HAVE_FIEMAP
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);	733	if (!req->result)
		734	{
		735	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		736
		737	if (fiemap->fm_extent_count)
		738	{
		739	AV *av = newAV ();
		740	int i;
		741
		742	while (fiemap->fm_mapped_extents)
		743	{
		744	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		745	AV *ext_av = newAV ();
		746
		747	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		748	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		749	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		750	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		751
		752	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		753	}
		754
		755	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		756	}
		757	else
		758	{
		759	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		760	PUSHs (sv_result);
		761	}
		762	}
		763	#endif
560	}	764	}
		765	else
		766	PUSHs (sv_result);
561	break;	767	break;
562		768
563	case REQ_STAT:	769	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
564	case REQ_LSTAT:	770	if (req->result > 0)
565	case REQ_FSTAT:	771	SvIV_set (sv_result, 0);
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	772	/* FALLTHROUGH */
567	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;
571
572	case REQ_READ:
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));
576	break;
577		773
578	default:	774	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	775	PUSHs (sv_result);
580	break;	776	break;
581	}	777	}
582		778
583	errno = req->errorno;	779	errno = req->errorno;
584		780
585	PUTBACK;	781	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	782	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	783	SPAGAIN;
588		784
		785	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		786	SvREFCNT_dec (sv_result);
		787	else
		788	sv_result_cache = sv_result;
		789
589	FREETMPS;	790	FREETMPS;
590	LEAVE;	791	LEAVE;
591		792
592	PUTBACK;	793	PUTBACK;
593	}	794	}
594		795
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	796	return !!SvTRUE (ERRSV);
610	}	797	}
611		798
		799	static void
612	static void req_destroy (aio_req req)	800	req_destroy (aio_req req)
613	{	801	{
614	if (req->self)	802	if (req->self)
615	{	803	{
616	sv_unmagic (req->self, PERL_MAGIC_ext);	804	sv_unmagic (req->self, PERL_MAGIC_ext);
617	SvREFCNT_dec (req->self);	805	SvREFCNT_dec (req->self);
618	}	806	}
619		807
620	SvREFCNT_dec (req->sv1);	808	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	809	SvREFCNT_dec (req->sv2);
		810	SvREFCNT_dec (req->sv3);
		811	SvREFCNT_dec (req->sv4);
622	SvREFCNT_dec (req->callback);	812	SvREFCNT_dec (req->callback);
623		813
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	814	free (req);
628	}	815	}
629		816
		817	static void
630	static void req_cancel_subs (aio_req grp)	818	req_cancel_subs (aio_req grp)
631	{	819	{
632	aio_req sub;
633
634	if (grp->type != REQ_GROUP)	820	if (grp->type != EIO_GROUP)
635	return;	821	return;
636		822
637	SvREFCNT_dec (grp->sv2);	823	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	824	grp->sv2 = 0;
639		825
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	826	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	827	}
643		828
644	static void req_cancel (aio_req req)	829	static void ecb_cold
		830	create_respipe (void)
645	{	831	{
646	req->flags |= FLAG_CANCELLED;	832	if (s_epipe_renew (&respipe))
647		833	croak ("IO::AIO: unable to initialize result pipe");
648	req_cancel_subs (req);
649	}	834	}
650
651	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else
654	# define TO_SOCKET(x) (x)
655	#endif
656		835
657	static void	836	static void
658	create_respipe ()	837	poll_wait (void)
659	{	838	{
660	int old_readfd = respipe [0];
661
662	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));
664
665	#ifdef _WIN32
666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667	#else
668	if (pipe (respipe))
669	#endif
670	croak ("unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}
694
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread ()
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}
789
790	static void poll_wait ()
791	{
792	fd_set rfd;
793
794	while (nreqs)	839	while (eio_nreqs ())
795	{	840	{
796	int size;	841	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	842
		843	X_LOCK (EIO_POOL->reslock);
798	size = res_queue.size;	844	size = EIO_POOL->res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	845	X_UNLOCK (EIO_POOL->reslock);
800		846
801	if (size)	847	if (size)
802	return;	848	return;
803		849
804	maybe_start_thread ();	850	etp_maybe_start_thread (EIO_POOL);
805		851
806	FD_ZERO (&rfd);	852	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	853	}
811	}	854	}
812		855
813	static int poll_cb ()	856	static int
		857	poll_cb (void)
814	{	858	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	859	for (;;)
828	{	860	{
829	for (;;)	861	int res = eio_poll ();
		862
		863	if (res > 0)
		864	croak (0);
		865
		866	if (!max_outstanding || max_outstanding > eio_nreqs ())
		867	return res;
		868
		869	poll_wait ();
		870	}
		871	}
		872
		873	static void ecb_cold
		874	reinit (void)
		875	{
		876	create_respipe ();
		877
		878	if (eio_init (want_poll, done_poll) < 0)
		879	croak ("IO::AIO: unable to initialise eio library");
		880	}
		881
		882	/*****************************************************************************/
		883
		884	static SV *
		885	get_cb (SV *cb_sv)
		886	{
		887	SvGETMAGIC (cb_sv);
		888	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		889	}
		890
		891	static aio_req ecb_noinline
		892	dreq (SV *callback)
		893	{
		894	SV *cb_cv;
		895	aio_req req;
		896	int req_pri = next_pri;
		897	next_pri = EIO_PRI_DEFAULT;
		898
		899	cb_cv = get_cb (callback);
		900
		901	req = calloc (sizeof (*req), 1);
		902	if (!req)
		903	croak ("out of memory during eio_req allocation");
		904
		905	req->callback = SvREFCNT_inc (cb_cv);
		906	req->pri = req_pri;
		907
		908	return req;
		909	}
		910
		911	#define dREQ \
		912	aio_req req = dreq (callback); \
		913
		914	#define REQ_SEND \
		915	PUTBACK; \
		916	req_submit (req); \
		917	SPAGAIN; \
		918	\
		919	if (GIMME_V != G_VOID) \
		920	XPUSHs (req_sv (req, aio_req_stash));
		921
		922	ecb_inline void
		923	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		924	{
		925	if (expect_false (SvROK (path)))
		926	{
		927	SV *rv = SvRV (path);
		928	SV *wdob;
		929
		930	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
830	{	931	{
831	maybe_start_thread ();	932	path = AvARRAY (rv)[1];
		933	wdob = AvARRAY (rv)[0];
832		934
833	X_LOCK (reslock);	935	if (SvOK (wdob))
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{	936	{
838	--npending;	937	*wd = SvAIO_WD (wdob);
839		938	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}	939	}
861	else	940	else
862	{	941	*wd = EIO_INVALID_WD;
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);
868	}
869
870	count++;
871	}
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}	942	}
		943	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		944	{
		945	*wd = (aio_wd)(long)SvIVX (rv);
		946	*wdsv = SvREFCNT_inc_NN (rv);
		947	*ptr = ".";
		948	return; /* path set to "." */
		949	}
		950	else
		951	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		952	}
886		953
887	if (nreqs <= max_outstanding)	954	*pathsv = newSVsv (path);
		955	*ptr = SvPVbyte_nolen (*pathsv);
		956	}
		957
		958	static void ecb_noinline
		959	req_set_path1 (aio_req req, SV *path)
		960	{
		961	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		962	}
		963
		964	static void ecb_noinline
		965	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		966	{
		967	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		968
		969	switch (SvTYPE (rv))
		970	{
		971	case SVt_PVIO:
		972	case SVt_PVLV:
		973	case SVt_PVGV:
		974	req->type = type_fh;
		975	req->sv1 = newSVsv (fh_or_path);
		976	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
888	break;	977	break;
889		978
890	poll_wait ();	979	default:
891		980	req->type = type_path;
892	++maxreqs;	981	req_set_path1 (req, fh_or_path);
		982	break;
893	}	983	}
894
895	unblock_sig ();
896	return count;
897	}	984	}
898		985
899	/*****************************************************************************/	986	/*****************************************************************************/
900	/* work around various missing functions */
901		987
902	#if !HAVE_PREADWRITE	988	static void
903	# define pread aio_pread	989	ts_set (struct timespec *ts, NV value)
904	# define pwrite aio_pwrite
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{	990	{
915	ssize_t res;	991	ts->tv_sec = value;
916	off_t ooffset;	992	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}	993	}
927		994
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	995	static NV
		996	ts_get (const struct timespec *ts)
929	{	997	{
930	ssize_t res;	998	return ts->tv_sec + ts->tv_nsec * 1e-9;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079
1080	if (res < 0
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}	999	}
1182		1000
1183	/*****************************************************************************/	1001	/*****************************************************************************/
1184		1002
1185	X_THREAD_PROC (aio_proc)	1003	XS(boot_IO__AIO) ecb_cold;
1186	{
1187	{//D
1188	aio_req req;
1189	struct timespec ts;
1190	worker *self = (worker *)thr_arg;
1191		1004
1192	/* try to distribute timeouts somewhat randomly */
1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195	for (;;)
1196	{
1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199	X_LOCK (reqlock);
1200
1201	for (;;)
1202	{
1203	self->req = req = reqq_shift (&req_queue);
1204
1205	if (req)
1206	break;
1207
1208	++idle;
1209
1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211	== ETIMEDOUT)
1212	{
1213	if (idle > max_idle)
1214	{
1215	--idle;
1216	X_UNLOCK (reqlock);
1217	X_LOCK (wrklock);
1218	--started;
1219	X_UNLOCK (wrklock);
1220	goto quit;
1221	}
1222
1223	/* we are allowed to idle, so do so without any timeout */
1224	X_COND_WAIT (reqwait, reqlock);
1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226	}
1227
1228	--idle;
1229	}
1230
1231	--nready;
1232
1233	X_UNLOCK (reqlock);
1234
1235	errno = 0; /* strictly unnecessary */
1236
1237	if (!(req->flags & FLAG_CANCELLED))
1238	switch (req->type)
1239	{
1240	case REQ_READ: req->result = req->offs >= 0
1241	? pread (req->int1, req->ptr1, req->size, req->offs)
1242	: read (req->int1, req->ptr1, req->size); break;
1243	case REQ_WRITE: req->result = req->offs >= 0
1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245	: write (req->int1, req->ptr1, req->size); break;
1246
1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262	case REQ_CLOSE: req->result = close (req->int1); break;
1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272	case REQ_SYNC: req->result = 0; sync (); break;
1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
1274	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1275
1276	case REQ_READDIR: scandir_ (req, self); break;
1277
1278	case REQ_BUSY:
1279	#ifdef _WIN32
1280	Sleep (req->nv1 * 1000.);
1281	#else
1282	{
1283	struct timeval tv;
1284
1285	tv.tv_sec = req->nv1;
1286	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1287
1288	req->result = select (0, 0, 0, 0, &tv);
1289	}
1290	#endif
1291	break;
1292
1293	case REQ_UTIME:
1294	case REQ_FUTIME:
1295	{
1296	struct timeval tv[2];
1297	struct timeval *times;
1298
1299	if (req->nv1 != -1. || req->nv2 != -1.)
1300	{
1301	tv[0].tv_sec = req->nv1;
1302	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1303	tv[1].tv_sec = req->nv2;
1304	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1305
1306	times = tv;
1307	}
1308	else
1309	times = 0;
1310
1311
1312	req->result = req->type == REQ_FUTIME
1313	? futimes (req->int1, times)
1314	: utimes (req->ptr1, times);
1315	}
1316
1317	case REQ_GROUP:
1318	case REQ_NOP:
1319	break;
1320
1321	case REQ_QUIT:
1322	goto quit;
1323
1324	default:
1325	req->result = -1;
1326	break;
1327	}
1328
1329	req->errorno = errno;
1330
1331	X_LOCK (reslock);
1332
1333	++npending;
1334
1335	if (!reqq_push (&res_queue, req))
1336	{
1337	/* write a dummy byte to the pipe so fh becomes ready */
1338	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1339
1340	/* optionally signal the main thread asynchronously */
1341	if (main_sig)
1342	pthread_kill (main_tid, main_sig);
1343	}
1344
1345	self->req = 0;
1346	worker_clear (self);
1347
1348	X_UNLOCK (reslock);
1349	}
1350
1351	quit:
1352	X_LOCK (wrklock);
1353	worker_free (self);
1354	X_UNLOCK (wrklock);
1355
1356	return 0;
1357	}//D
1358	}
1359
1360	/*****************************************************************************/
1361
1362	static void atfork_prepare (void)
1363	{
1364	X_LOCK (wrklock);
1365	X_LOCK (reqlock);
1366	X_LOCK (reslock);
1367	#if !HAVE_PREADWRITE
1368	X_LOCK (preadwritelock);
1369	#endif
1370	#if !HAVE_READDIR_R
1371	X_LOCK (readdirlock);
1372	#endif
1373	}
1374
1375	static void atfork_parent (void)
1376	{
1377	#if !HAVE_READDIR_R
1378	X_UNLOCK (readdirlock);
1379	#endif
1380	#if !HAVE_PREADWRITE
1381	X_UNLOCK (preadwritelock);
1382	#endif
1383	X_UNLOCK (reslock);
1384	X_UNLOCK (reqlock);
1385	X_UNLOCK (wrklock);
1386	}
1387
1388	static void atfork_child (void)
1389	{
1390	aio_req prv;
1391
1392	while (prv = reqq_shift (&req_queue))
1393	req_destroy (prv);
1394
1395	while (prv = reqq_shift (&res_queue))
1396	req_destroy (prv);
1397
1398	while (wrk_first.next != &wrk_first)
1399	{
1400	worker *wrk = wrk_first.next;
1401
1402	if (wrk->req)
1403	req_destroy (wrk->req);
1404
1405	worker_clear (wrk);
1406	worker_free (wrk);
1407	}
1408
1409	started = 0;
1410	idle = 0;
1411	nreqs = 0;
1412	nready = 0;
1413	npending = 0;
1414
1415	create_respipe ();
1416
1417	atfork_parent ();
1418	}
1419
1420	#define dREQ \
1421	aio_req req; \
1422	int req_pri = next_pri; \
1423	next_pri = DEFAULT_PRI + PRI_BIAS; \
1424	\
1425	if (SvOK (callback) && !SvROK (callback)) \
1426	croak ("callback must be undef or of reference type"); \
1427	\
1428	Newz (0, req, 1, aio_cb); \
1429	if (!req) \
1430	croak ("out of memory during aio_req allocation"); \
1431	\
1432	req->callback = newSVsv (callback); \
1433	req->pri = req_pri
1434
1435	#define REQ_SEND \
1436	req_send (req); \
1437	\
1438	if (GIMME_V != G_VOID) \
1439	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1440
1441	MODULE = IO::AIO PACKAGE = IO::AIO	1005	MODULE = IO::AIO PACKAGE = IO::AIO
1442		1006
1443	PROTOTYPES: ENABLE	1007	PROTOTYPES: ENABLE
1444		1008
1445	BOOT:	1009	BOOT:
1446	{	1010	{
		1011	static const struct {
		1012	const char *name;
		1013	IV iv;
		1014	} *civ, const_iv[] = {
		1015	# define const_niv(name, value) { # name, (IV) value },
		1016	# define const_iv(name) { # name, (IV) name },
		1017	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1018
		1019	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1020	/* the first block can be undef if missing */
		1021	const_iv (ENOSYS)
		1022	const_iv (EXDEV)
		1023	const_iv (EBADR)
		1024
		1025	/* for lseek */
		1026	const_iv (SEEK_DATA)
		1027	const_iv (SEEK_HOLE)
		1028
		1029	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1030	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1031	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1032	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1033	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1034	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1035
		1036	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1037	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1038	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1039	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1040	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1041
		1042	/* the second block will be 0 when missing */
		1043	const_iv (O_RDONLY)
		1044	const_iv (O_WRONLY)
		1045	const_iv (O_RDWR)
		1046	const_iv (O_CREAT)
		1047	const_iv (O_TRUNC)
		1048	const_iv (O_EXCL)
		1049	const_iv (O_APPEND)
		1050
		1051	const_iv (O_ASYNC)
		1052	const_iv (O_DIRECT)
		1053	const_iv (O_NOATIME)
		1054
		1055	const_iv (O_CLOEXEC)
		1056	const_iv (O_NOCTTY)
		1057	const_iv (O_NOFOLLOW)
		1058	const_iv (O_NONBLOCK)
		1059	const_iv (O_EXEC)
		1060	const_iv (O_SEARCH)
		1061	const_iv (O_DIRECTORY)
		1062	const_iv (O_DSYNC)
		1063	const_iv (O_RSYNC)
		1064	const_iv (O_SYNC)
		1065	const_iv (O_PATH)
		1066	const_iv (O_TMPFILE)
		1067	const_iv (O_TTY_INIT)
		1068
		1069	const_iv (S_IFIFO)
		1070	const_iv (S_IFCHR)
		1071	const_iv (S_IFBLK)
		1072	const_iv (S_IFLNK)
		1073	const_iv (S_IFREG)
		1074	const_iv (S_IFDIR)
		1075	const_iv (S_IFWHT)
		1076	const_iv (S_IFSOCK)
		1077	const_iv (S_IFMT)
		1078
		1079	const_iv (ST_RDONLY)
		1080	const_iv (ST_NOSUID)
		1081	const_iv (ST_NODEV)
		1082	const_iv (ST_NOEXEC)
		1083	const_iv (ST_SYNCHRONOUS)
		1084	const_iv (ST_MANDLOCK)
		1085	const_iv (ST_WRITE)
		1086	const_iv (ST_APPEND)
		1087	const_iv (ST_IMMUTABLE)
		1088	const_iv (ST_NOATIME)
		1089	const_iv (ST_NODIRATIME)
		1090	const_iv (ST_RELATIME)
		1091
		1092	const_iv (PROT_NONE)
		1093	const_iv (PROT_EXEC)
		1094	const_iv (PROT_READ)
		1095	const_iv (PROT_WRITE)
		1096
		1097	const_iv (MAP_PRIVATE)
		1098	const_iv (MAP_SHARED)
		1099	const_iv (MAP_FIXED)
		1100	const_iv (MAP_ANONYMOUS)
		1101
		1102	/* linuxish */
		1103	const_iv (MAP_LOCKED)
		1104	const_iv (MAP_NORESERVE)
		1105	const_iv (MAP_POPULATE)
		1106	const_iv (MAP_NONBLOCK)
		1107	const_iv (MAP_GROWSDOWN)
		1108	const_iv (MAP_32BIT)
		1109	const_iv (MAP_HUGETLB)
		1110	const_iv (MAP_STACK)
		1111
		1112	const_iv (MREMAP_MAYMOVE)
		1113	const_iv (MREMAP_FIXED)
		1114
		1115	const_iv (F_DUPFD_CLOEXEC)
		1116
		1117	const_iv (F_OFD_GETLK)
		1118	const_iv (F_OFD_SETLK)
		1119	const_iv (F_OFD_GETLKW)
		1120
		1121	const_iv (FIFREEZE)
		1122	const_iv (FITHAW)
		1123	const_iv (FITRIM)
		1124	const_iv (FICLONE)
		1125	const_iv (FICLONERANGE)
		1126	const_iv (FIDEDUPERANGE)
		1127
		1128	const_iv (FS_IOC_GETFLAGS)
		1129	const_iv (FS_IOC_SETFLAGS)
		1130	const_iv (FS_IOC_GETVERSION)
		1131	const_iv (FS_IOC_SETVERSION)
		1132	const_iv (FS_IOC_FIEMAP)
		1133	const_iv (FS_IOC_FSGETXATTR)
		1134	const_iv (FS_IOC_FSSETXATTR)
		1135	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1136	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1137	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1138
		1139	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1140
		1141	const_iv (FS_SECRM_FL)
		1142	const_iv (FS_UNRM_FL)
		1143	const_iv (FS_COMPR_FL)
		1144	const_iv (FS_SYNC_FL)
		1145	const_iv (FS_IMMUTABLE_FL)
		1146	const_iv (FS_APPEND_FL)
		1147	const_iv (FS_NODUMP_FL)
		1148	const_iv (FS_NOATIME_FL)
		1149	const_iv (FS_DIRTY_FL)
		1150	const_iv (FS_COMPRBLK_FL)
		1151	const_iv (FS_NOCOMP_FL)
		1152	const_iv (FS_ENCRYPT_FL)
		1153	const_iv (FS_BTREE_FL)
		1154	const_iv (FS_INDEX_FL)
		1155	const_iv (FS_JOURNAL_DATA_FL)
		1156	const_iv (FS_NOTAIL_FL)
		1157	const_iv (FS_DIRSYNC_FL)
		1158	const_iv (FS_TOPDIR_FL)
		1159	const_iv (FS_FL_USER_MODIFIABLE)
		1160
		1161	const_iv (FS_XFLAG_REALTIME)
		1162	const_iv (FS_XFLAG_PREALLOC)
		1163	const_iv (FS_XFLAG_IMMUTABLE)
		1164	const_iv (FS_XFLAG_APPEND)
		1165	const_iv (FS_XFLAG_SYNC)
		1166	const_iv (FS_XFLAG_NOATIME)
		1167	const_iv (FS_XFLAG_NODUMP)
		1168	const_iv (FS_XFLAG_RTINHERIT)
		1169	const_iv (FS_XFLAG_PROJINHERIT)
		1170	const_iv (FS_XFLAG_NOSYMLINKS)
		1171	const_iv (FS_XFLAG_EXTSIZE)
		1172	const_iv (FS_XFLAG_EXTSZINHERIT)
		1173	const_iv (FS_XFLAG_NODEFRAG)
		1174	const_iv (FS_XFLAG_FILESTREAM)
		1175	const_iv (FS_XFLAG_DAX)
		1176	const_iv (FS_XFLAG_HASATTR)
		1177
		1178	const_iv (FIEMAP_FLAG_SYNC)
		1179	const_iv (FIEMAP_FLAG_XATTR)
		1180	const_iv (FIEMAP_FLAGS_COMPAT)
		1181	const_iv (FIEMAP_EXTENT_LAST)
		1182	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1183	const_iv (FIEMAP_EXTENT_DELALLOC)
		1184	const_iv (FIEMAP_EXTENT_ENCODED)
		1185	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1186	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1187	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1188	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1189	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1190	const_iv (FIEMAP_EXTENT_MERGED)
		1191	const_iv (FIEMAP_EXTENT_SHARED)
		1192
		1193	const_iv (SPLICE_F_MOVE)
		1194	const_iv (SPLICE_F_NONBLOCK)
		1195	const_iv (SPLICE_F_MORE)
		1196	const_iv (SPLICE_F_GIFT)
		1197
		1198	const_iv (EFD_CLOEXEC)
		1199	const_iv (EFD_NONBLOCK)
		1200	const_iv (EFD_SEMAPHORE)
		1201
		1202	const_iv (CLOCK_REALTIME)
		1203	const_iv (CLOCK_MONOTONIC)
		1204	const_iv (CLOCK_BOOTTIME)
		1205	const_iv (CLOCK_REALTIME_ALARM)
		1206	const_iv (CLOCK_BOOTTIME_ALARM)
		1207
		1208	const_iv (TFD_NONBLOCK)
		1209	const_iv (TFD_CLOEXEC)
		1210
		1211	const_iv (TFD_TIMER_ABSTIME)
		1212	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1213
		1214	/* these are libeio constants, and are independent of gendef0 */
		1215	const_eio (SEEK_SET)
		1216	const_eio (SEEK_CUR)
		1217	const_eio (SEEK_END)
		1218
		1219	const_eio (MCL_FUTURE)
		1220	const_eio (MCL_CURRENT)
		1221
		1222	const_eio (MS_ASYNC)
		1223	const_eio (MS_INVALIDATE)
		1224	const_eio (MS_SYNC)
		1225
		1226	const_eio (MT_MODIFY)
		1227
		1228	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1229	const_eio (SYNC_FILE_RANGE_WRITE)
		1230	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1231
		1232	const_eio (FALLOC_FL_KEEP_SIZE)
		1233	const_eio (FALLOC_FL_PUNCH_HOLE)
		1234	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1235	const_eio (FALLOC_FL_ZERO_RANGE)
		1236	const_eio (FALLOC_FL_INSERT_RANGE)
		1237	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1238
		1239	const_eio (RENAME_NOREPLACE)
		1240	const_eio (RENAME_EXCHANGE)
		1241	const_eio (RENAME_WHITEOUT)
		1242
		1243	const_eio (READDIR_DENTS)
		1244	const_eio (READDIR_DIRS_FIRST)
		1245	const_eio (READDIR_STAT_ORDER)
		1246	const_eio (READDIR_FOUND_UNKNOWN)
		1247
		1248	const_eio (DT_UNKNOWN)
		1249	const_eio (DT_FIFO)
		1250	const_eio (DT_CHR)
		1251	const_eio (DT_DIR)
		1252	const_eio (DT_BLK)
		1253	const_eio (DT_REG)
		1254	const_eio (DT_LNK)
		1255	const_eio (DT_SOCK)
		1256	const_eio (DT_WHT)
		1257	};
		1258
1447	stash = gv_stashpv ("IO::AIO", 1);	1259	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1260	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1261	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1262	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1448		1263
1449	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1264	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1450	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1265	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1451	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1452	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1453	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1454	#ifdef _WIN32
1455	X_MUTEX_CHECK (wrklock);
1456	X_MUTEX_CHECK (reslock);
1457	X_MUTEX_CHECK (reqlock);
1458	X_MUTEX_CHECK (reqwait);
1459	X_MUTEX_CHECK (preadwritelock);
1460	X_MUTEX_CHECK (readdirlock);
1461		1266
1462	X_COND_CHECK (reqwait);	1267	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1463	#else
1464	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1465	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1466	#endif
1467		1268
1468	create_respipe ();	1269	reinit ();
1469
1470	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1471	}	1270	}
1472		1271
1473	void	1272	void
		1273	reinit ()
		1274	PROTOTYPE:
		1275
		1276	void
1474	max_poll_reqs (int nreqs)	1277	max_poll_reqs (unsigned int nreqs)
1475	PROTOTYPE: $	1278	PROTOTYPE: $
1476	CODE:	1279	CODE:
1477	max_poll_reqs = nreqs;	1280	eio_set_max_poll_reqs (nreqs);
1478		1281
1479	void	1282	void
1480	max_poll_time (double nseconds)	1283	max_poll_time (double nseconds)
1481	PROTOTYPE: $	1284	PROTOTYPE: $
1482	CODE:	1285	CODE:
1483	max_poll_time = nseconds * AIO_TICKS;	1286	eio_set_max_poll_time (nseconds);
1484		1287
1485	void	1288	void
1486	min_parallel (int nthreads)	1289	min_parallel (unsigned int nthreads)
1487	PROTOTYPE: $
1488
1489	void
1490	max_parallel (int nthreads)
1491	PROTOTYPE: $
1492
1493	void
1494	max_idle (int nthreads)
1495	PROTOTYPE: $	1290	PROTOTYPE: $
1496	CODE:	1291	CODE:
1497	set_max_idle (nthreads);	1292	eio_set_min_parallel (nthreads);
1498		1293
1499	int	1294	void
1500	max_outstanding (int maxreqs)	1295	max_parallel (unsigned int nthreads)
1501	PROTOTYPE: $	1296	PROTOTYPE: $
1502	CODE:	1297	CODE:
1503	RETVAL = max_outstanding;	1298	eio_set_max_parallel (nthreads);
		1299
		1300	void
		1301	max_idle (unsigned int nthreads)
		1302	PROTOTYPE: $
		1303	CODE:
		1304	eio_set_max_idle (nthreads);
		1305
		1306	void
		1307	idle_timeout (unsigned int seconds)
		1308	PROTOTYPE: $
		1309	CODE:
		1310	eio_set_idle_timeout (seconds);
		1311
		1312	void
		1313	max_outstanding (unsigned int maxreqs)
		1314	PROTOTYPE: $
		1315	CODE:
1504	max_outstanding = maxreqs;	1316	max_outstanding = maxreqs;
1505	OUTPUT:
1506	RETVAL
1507		1317
1508	void	1318	void
1509	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1319	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1510	PROTOTYPE: $$$;$
1511	PPCODE:	1320	PPCODE:
1512	{	1321	{
1513	dREQ;	1322	dREQ;
1514		1323
		1324	req->type = EIO_WD_OPEN;
		1325	req_set_path1 (req, pathname);
		1326
		1327	REQ_SEND;
		1328	}
		1329
		1330	void
		1331	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1332	PPCODE:
		1333	{
		1334	dREQ;
		1335
1515	req->type = REQ_OPEN;	1336	req->type = EIO_OPEN;
1516	req->sv1 = newSVsv (pathname);	1337	req_set_path1 (req, pathname);
1517	req->ptr1 = SvPVbyte_nolen (req->sv1);
1518	req->int1 = flags;	1338	req->int1 = flags;
1519	req->mode = mode;	1339	req->int2 = mode;
1520		1340
1521	REQ_SEND;	1341	REQ_SEND;
1522	}	1342	}
1523		1343
1524	void	1344	void
1525	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1345	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1526	PROTOTYPE: $;$
1527	ALIAS:	1346	ALIAS:
1528	aio_fsync = REQ_FSYNC	1347	aio_fsync = EIO_FSYNC
1529	aio_fdatasync = REQ_FDATASYNC	1348	aio_fdatasync = EIO_FDATASYNC
		1349	aio_syncfs = EIO_SYNCFS
1530	PPCODE:	1350	PPCODE:
1531	{	1351	{
		1352	int fd = s_fileno_croak (fh, 0);
1532	dREQ;	1353	dREQ;
1533		1354
1534	req->type = ix;	1355	req->type = ix;
1535	req->sv1 = newSVsv (fh);	1356	req->sv1 = newSVsv (fh);
1536	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1357	req->int1 = fd;
1537		1358
1538	REQ_SEND (req);	1359	REQ_SEND;
1539	}	1360	}
1540		1361
1541	int
1542	_dup (int fd)
1543	PROTOTYPE: $
1544	CODE:
1545	RETVAL = dup (fd);
1546	OUTPUT:
1547	RETVAL
1548
1549	void	1362	void
1550	_aio_close (int fd, SV *callback=&PL_sv_undef)	1363	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
1551	PROTOTYPE: $;$
1552	PPCODE:	1364	PPCODE:
1553	{	1365	{
		1366	int fd = s_fileno_croak (fh, 0);
1554	dREQ;	1367	dREQ;
1555		1368
1556	req->type = REQ_CLOSE;	1369	req->type = EIO_SYNC_FILE_RANGE;
		1370	req->sv1 = newSVsv (fh);
1557	req->int1 = fd;	1371	req->int1 = fd;
		1372	req->offs = offset;
		1373	req->size = nbytes;
		1374	req->int2 = flags;
1558		1375
1559	REQ_SEND (req);	1376	REQ_SEND;
1560	}	1377	}
1561		1378
1562	void	1379	void
		1380	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1381	PPCODE:
		1382	{
		1383	int fd = s_fileno_croak (fh, 0);
		1384	dREQ;
		1385
		1386	req->type = EIO_FALLOCATE;
		1387	req->sv1 = newSVsv (fh);
		1388	req->int1 = fd;
		1389	req->int2 = mode;
		1390	req->offs = offset;
		1391	req->size = len;
		1392
		1393	REQ_SEND;
		1394	}
		1395
		1396	void
		1397	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1398	PPCODE:
		1399	{
		1400	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1401	int fd = s_fileno_croak (fh, 0);
		1402	dREQ;
		1403
		1404	if (expect_false (close_fd < 0))
		1405	{
		1406	int pipefd [2];
		1407
		1408	if (
		1409	#ifdef _WIN32
		1410	_pipe (pipefd, 1, _O_BINARY) < 0
		1411	#else
		1412	pipe (pipefd) < 0
		1413	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1414	#endif
		1415	|| close (pipefd [1]) < 0
		1416	)
		1417	abort (); /*D*/
		1418
		1419	close_fd = pipefd [0];
		1420	}
		1421
		1422	req->type = EIO_DUP2;
		1423	req->int1 = close_fd;
		1424	req->sv2 = newSVsv (fh);
		1425	req->int2 = fd;
		1426
		1427	REQ_SEND;
		1428	}
		1429
		1430	void
		1431	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1432	PPCODE:
		1433	{
		1434	int fd = s_fileno_croak (fh, 0);
		1435	dREQ;
		1436
		1437	req->type = EIO_SEEK;
		1438	req->sv1 = newSVsv (fh);
		1439	req->int1 = fd;
		1440	req->offs = SvVAL64 (offset);
		1441	req->int2 = whence;
		1442
		1443	REQ_SEND;
		1444	}
		1445
		1446	void
1563	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1447	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1564	ALIAS:	1448	ALIAS:
1565	aio_read = REQ_READ	1449	aio_read = EIO_READ
1566	aio_write = REQ_WRITE	1450	aio_write = EIO_WRITE
1567	PROTOTYPE: $$$$$;$
1568	PPCODE:	1451	PPCODE:
1569	{	1452	{
1570	STRLEN svlen;	1453	STRLEN svlen;
		1454	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1571	char *svptr = SvPVbyte (data, svlen);	1455	char *svptr = SvPVbyte (data, svlen);
1572	UV len = SvUV (length);	1456	UV len = SvUV (length);
1573		1457
1574	SvUPGRADE (data, SVt_PV);
1575	SvPOK_on (data);
1576
1577	if (dataoffset < 0)	1458	if (dataoffset < 0)
1578	dataoffset += svlen;	1459	dataoffset += svlen;
1579		1460
1580	if (dataoffset < 0 || dataoffset > svlen)	1461	if (dataoffset < 0 || dataoffset > svlen)
1581	croak ("dataoffset outside of data scalar");	1462	croak ("dataoffset outside of data scalar");
1582		1463
1583	if (ix == REQ_WRITE)	1464	if (ix == EIO_WRITE)
1584	{	1465	{
1585	/* write: check length and adjust. */	1466	/* write: check length and adjust. */
1586	if (!SvOK (length) || len + dataoffset > svlen)	1467	if (!SvOK (length) || len + dataoffset > svlen)
1587	len = svlen - dataoffset;	1468	len = svlen - dataoffset;
1588	}	1469	}
1589	else	1470	else
1590	{	1471	{
1591	/* read: grow scalar as necessary */	1472	/* read: check type and grow scalar as necessary */
		1473	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1592	svptr = SvGROW (data, len + dataoffset + 1);	1474	svptr = sv_grow (data, len + dataoffset + 1);
		1475	else if (SvCUR (data) < len + dataoffset)
		1476	croak ("length + dataoffset outside of scalar, and cannot grow");
1593	}	1477	}
1594
1595	if (len < 0)
1596	croak ("length must not be negative");
1597		1478
1598	{	1479	{
1599	dREQ;	1480	dREQ;
1600		1481
1601	req->type = ix;	1482	req->type = ix;
1602	req->sv1 = newSVsv (fh);	1483	req->sv1 = newSVsv (fh);
1603	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1484	req->int1 = fd;
1604	: IoOFP (sv_2io (fh)));
1605	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1485	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1606	req->size = len;	1486	req->size = len;
1607	req->sv2 = SvREFCNT_inc (data);	1487	req->sv2 = SvREFCNT_inc (data);
1608	req->ptr1 = (char *)svptr + dataoffset;	1488	req->ptr2 = (char *)svptr + dataoffset;
1609	req->stroffset = dataoffset;	1489	req->stroffset = dataoffset;
1610		1490
1611	if (!SvREADONLY (data))	1491	if (!SvREADONLY (data))
1612	{	1492	{
1613	SvREADONLY_on (data);	1493	SvREADONLY_on (data);
…		…
1617	REQ_SEND;	1497	REQ_SEND;
1618	}	1498	}
1619	}	1499	}
1620		1500
1621	void	1501	void
1622	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1502	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1623	PROTOTYPE: $$;$	1503	ALIAS:
		1504	aio_ioctl = EIO_IOCTL
		1505	aio_fcntl = EIO_FCNTL
1624	PPCODE:	1506	PPCODE:
1625	{	1507	{
1626	SV *data;	1508	int fd = s_fileno_croak (fh, 0);
1627	dREQ;	1509	char *svptr;
1628		1510
1629	data = newSV (NAME_MAX);	1511	if (SvPOK (arg) || !SvNIOK (arg))
1630	SvPOK_on (data);
1631
1632	req->type = REQ_READLINK;
1633	req->sv1 = newSVsv (path);
1634	req->ptr2 = SvPVbyte_nolen (req->sv1);
1635	req->sv2 = data;
1636	req->ptr1 = SvPVbyte_nolen (data);
1637
1638	REQ_SEND;
1639	}
1640
1641	void
1642	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1643	PROTOTYPE: $$$$;$
1644	PPCODE:
1645	{
1646	dREQ;
1647
1648	req->type = REQ_SENDFILE;
1649	req->sv1 = newSVsv (out_fh);
1650	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1651	req->sv2 = newSVsv (in_fh);
1652	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1653	req->offs = SvVAL64 (in_offset);
1654	req->size = length;
1655
1656	REQ_SEND;
1657	}
1658
1659	void
1660	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1661	PROTOTYPE: $$$;$
1662	PPCODE:
1663	{
1664	dREQ;
1665
1666	req->type = REQ_READAHEAD;
1667	req->sv1 = newSVsv (fh);
1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1669	req->offs = SvVAL64 (offset);
1670	req->size = length;
1671
1672	REQ_SEND;
1673	}
1674
1675	void
1676	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1677	ALIAS:
1678	aio_stat = REQ_STAT
1679	aio_lstat = REQ_LSTAT
1680	PPCODE:
1681	{
1682	dREQ;
1683
1684	req->ptr2 = malloc (sizeof (Stat_t));
1685	if (!req->ptr2)
1686	{	1512	{
1687	req_destroy (req);	1513	STRLEN svlen;
1688	croak ("out of memory during aio_stat statdata allocation");	1514	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1689	}	1515	#ifdef IOCPARM_LEN
		1516	STRLEN need = IOCPARM_LEN (request);
		1517	#else
		1518	STRLEN need = 256;
		1519	#endif
1690		1520
1691	req->flags |= FLAG_PTR2_FREE;	1521	if (svlen < need)
1692	req->sv1 = newSVsv (fh_or_path);	1522	svptr = SvGROW (arg, need);
1693
1694	if (SvPOK (fh_or_path))
1695	{
1696	req->type = ix;
1697	req->ptr1 = SvPVbyte_nolen (req->sv1);
1698	}	1523	}
1699	else	1524	else
		1525	svptr = (char *)SvIV (arg);
		1526
1700	{	1527	{
		1528	dREQ;
		1529
1701	req->type = REQ_FSTAT;	1530	req->type = ix;
1702	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1531	req->sv1 = newSVsv (fh);
		1532	req->int1 = fd;
		1533	req->int2 = (long)request;
		1534	req->sv2 = SvREFCNT_inc (arg);
		1535	req->ptr2 = svptr;
		1536
		1537	REQ_SEND;
1703	}	1538	}
		1539	}
		1540
		1541	void
		1542	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1543	ALIAS:
		1544	aio_readlink = EIO_READLINK
		1545	aio_realpath = EIO_REALPATH
		1546	PPCODE:
		1547	{
		1548	dREQ;
		1549
		1550	req->type = ix;
		1551	req_set_path1 (req, pathname);
1704		1552
1705	REQ_SEND;	1553	REQ_SEND;
1706	}	1554	}
1707		1555
1708	void	1556	void
		1557	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1558	PPCODE:
		1559	{
		1560	int ifd = s_fileno_croak (in_fh , 0);
		1561	int ofd = s_fileno_croak (out_fh, 1);
		1562	dREQ;
		1563
		1564	req->type = EIO_SENDFILE;
		1565	req->sv1 = newSVsv (out_fh);
		1566	req->int1 = ofd;
		1567	req->sv2 = newSVsv (in_fh);
		1568	req->int2 = ifd;
		1569	req->offs = in_offset;
		1570	req->size = length;
		1571
		1572	REQ_SEND;
		1573	}
		1574
		1575	void
		1576	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1577	PPCODE:
		1578	{
		1579	int fd = s_fileno_croak (fh, 0);
		1580	dREQ;
		1581
		1582	req->type = EIO_READAHEAD;
		1583	req->sv1 = newSVsv (fh);
		1584	req->int1 = fd;
		1585	req->offs = offset;
		1586	req->size = length;
		1587
		1588	REQ_SEND;
		1589	}
		1590
		1591	void
		1592	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1593	ALIAS:
		1594	aio_stat = EIO_STAT
		1595	aio_lstat = EIO_LSTAT
		1596	aio_statvfs = EIO_STATVFS
		1597	PPCODE:
		1598	{
		1599	dREQ;
		1600
		1601	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1602
		1603	REQ_SEND;
		1604	}
		1605
		1606	UV
		1607	major (UV dev)
		1608	ALIAS:
		1609	minor = 1
		1610	CODE:
		1611	RETVAL = ix ? minor (dev) : major (dev);
		1612	OUTPUT:
		1613	RETVAL
		1614
		1615	UV
		1616	makedev (UV maj, UV min)
		1617	CODE:
		1618	RETVAL = makedev (maj, min);
		1619	OUTPUT:
		1620	RETVAL
		1621
		1622	void
1709	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1623	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1710	PPCODE:	1624	PPCODE:
1711	{	1625	{
1712	dREQ;	1626	dREQ;
1713		1627
1714	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1628	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1715	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1629	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1716	req->sv1 = newSVsv (fh_or_path);	1630	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1717
1718	if (SvPOK (fh_or_path))
1719	{
1720	req->type = REQ_UTIME;
1721	req->ptr1 = SvPVbyte_nolen (req->sv1);
1722	}
1723	else
1724	{
1725	req->type = REQ_FUTIME;
1726	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1727	}
1728		1631
1729	REQ_SEND;	1632	REQ_SEND;
1730	}	1633	}
1731		1634
1732	void	1635	void
1733	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1636	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1734	PPCODE:	1637	PPCODE:
1735	{	1638	{
1736	dREQ;	1639	dREQ;
1737		1640
1738	req->sv1 = newSVsv (fh_or_path);
1739	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1641	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1740		1642	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1741	if (SvPOK (fh_or_path))
1742	{
1743	req->type = REQ_TRUNCATE;
1744	req->ptr1 = SvPVbyte_nolen (req->sv1);
1745	}
1746	else
1747	{
1748	req->type = REQ_FTRUNCATE;
1749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1750	}
1751		1643
1752	REQ_SEND;	1644	REQ_SEND;
1753	}	1645	}
1754		1646
1755	void	1647	void
1756	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1648	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1757	PPCODE:	1649	PPCODE:
1758	{	1650	{
1759	dREQ;	1651	dREQ;
1760		1652
1761	req->mode = mode;	1653	req->int2 = mode;
1762	req->sv1 = newSVsv (fh_or_path);	1654	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1763
1764	if (SvPOK (fh_or_path))
1765	{
1766	req->type = REQ_CHMOD;
1767	req->ptr1 = SvPVbyte_nolen (req->sv1);
1768	}
1769	else
1770	{
1771	req->type = REQ_FCHMOD;
1772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1773	}
1774		1655
1775	REQ_SEND;	1656	REQ_SEND;
1776	}	1657	}
1777		1658
1778	void	1659	void
1779	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1660	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1780	PPCODE:	1661	PPCODE:
1781	{	1662	{
1782	dREQ;	1663	dREQ;
1783		1664
1784	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1665	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1785	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1666	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1786	req->sv1 = newSVsv (fh_or_path);	1667	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1787
1788	if (SvPOK (fh_or_path))
1789	{
1790	req->type = REQ_CHOWN;
1791	req->ptr1 = SvPVbyte_nolen (req->sv1);
1792	}
1793	else
1794	{
1795	req->type = REQ_FCHOWN;
1796	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1797	}
1798		1668
1799	REQ_SEND;	1669	REQ_SEND;
1800	}	1670	}
1801		1671
1802	void	1672	void
		1673	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1674	PPCODE:
		1675	{
		1676	dREQ;
		1677
		1678	req->type = EIO_READDIR;
		1679	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1680
		1681	if (flags & EIO_READDIR_DENTS)
		1682	req->int1 |= EIO_READDIR_CUSTOM2;
		1683
		1684	req_set_path1 (req, pathname);
		1685
		1686	REQ_SEND;
		1687	}
		1688
		1689	void
		1690	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1691	PPCODE:
		1692	{
		1693	dREQ;
		1694
		1695	req->type = EIO_MKDIR;
		1696	req->int2 = mode;
		1697	req_set_path1 (req, pathname);
		1698
		1699	REQ_SEND;
		1700	}
		1701
		1702	void
1803	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1703	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1804	ALIAS:	1704	ALIAS:
1805	aio_unlink = REQ_UNLINK	1705	aio_unlink = EIO_UNLINK
1806	aio_rmdir = REQ_RMDIR	1706	aio_rmdir = EIO_RMDIR
1807	aio_readdir = REQ_READDIR	1707	aio_readdir = EIO_READDIR
1808	PPCODE:	1708	PPCODE:
1809	{	1709	{
1810	dREQ;	1710	dREQ;
1811		1711
1812	req->type = ix;	1712	req->type = ix;
1813	req->sv1 = newSVsv (pathname);	1713	req_set_path1 (req, pathname);
1814	req->ptr1 = SvPVbyte_nolen (req->sv1);
1815		1714
1816	REQ_SEND;	1715	REQ_SEND;
1817	}	1716	}
1818		1717
1819	void	1718	void
1820	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1719	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1720	ALIAS:
		1721	aio_link = EIO_LINK
		1722	aio_symlink = EIO_SYMLINK
		1723	aio_rename = EIO_RENAME
1821	PPCODE:	1724	PPCODE:
1822	{	1725	{
1823	dREQ;	1726	eio_wd wd2 = 0;
1824
1825	req->type = REQ_MKDIR;
1826	req->sv1 = newSVsv (pathname);
1827	req->ptr1 = SvPVbyte_nolen (req->sv1);
1828	req->mode = mode;
1829
1830	REQ_SEND;
1831	}
1832
1833	void
1834	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1835	ALIAS:
1836	aio_link = REQ_LINK
1837	aio_symlink = REQ_SYMLINK
1838	aio_rename = REQ_RENAME
1839	PPCODE:
1840	{
1841	dREQ;	1727	dREQ;
1842		1728
1843	req->type = ix;	1729	req->type = ix;
1844	req->sv2 = newSVsv (oldpath);	1730	req_set_path1 (req, oldpath);
1845	req->ptr2 = SvPVbyte_nolen (req->sv2);	1731	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1846	req->sv1 = newSVsv (newpath);	1732	req->int3 = (long)wd2;
1847	req->ptr1 = SvPVbyte_nolen (req->sv1);
1848		1733
1849	REQ_SEND;	1734	REQ_SEND;
1850	}	1735	}
1851		1736
1852	void	1737	void
1853	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1738	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1854	PPCODE:	1739	PPCODE:
1855	{	1740	{
		1741	eio_wd wd2 = 0;
1856	dREQ;	1742	dREQ;
1857		1743
1858	req->type = REQ_MKNOD;	1744	req->type = EIO_RENAME;
1859	req->sv1 = newSVsv (pathname);	1745	req_set_path1 (req, oldpath);
1860	req->ptr1 = SvPVbyte_nolen (req->sv1);	1746	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1861	req->mode = (mode_t)mode;	1747	req->int2 = flags;
1862	req->offs = dev;	1748	req->int3 = (long)wd2;
1863		1749
1864	REQ_SEND;	1750	REQ_SEND;
1865	}	1751	}
1866		1752
1867	void	1753	void
1868	aio_busy (double delay, SV *callback=&PL_sv_undef)	1754	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1869	PPCODE:	1755	PPCODE:
1870	{	1756	{
1871	dREQ;	1757	dREQ;
		1758
		1759	req->type = EIO_MKNOD;
		1760	req->int2 = (mode_t)mode;
		1761	req->offs = dev;
		1762	req_set_path1 (req, pathname);
		1763
		1764	REQ_SEND;
		1765	}
1872		1766
		1767	void
		1768	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1769	ALIAS:
		1770	aio_mtouch = EIO_MTOUCH
		1771	aio_msync = EIO_MSYNC
		1772	PPCODE:
		1773	{
		1774	STRLEN svlen;
		1775	char *svptr = SvPVbyte (data, svlen);
		1776	UV len = SvUV (length);
		1777
		1778	if (flags < 0)
		1779	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1780
		1781	if (offset < 0)
		1782	offset += svlen;
		1783
		1784	if (offset < 0 || offset > svlen)
		1785	croak ("offset outside of scalar");
		1786
		1787	if (!SvOK (length) || len + offset > svlen)
		1788	len = svlen - offset;
		1789
		1790	{
		1791	dREQ;
		1792
		1793	req->type = ix;
		1794	req->sv2 = SvREFCNT_inc (data);
		1795	req->ptr2 = (char *)svptr + offset;
		1796	req->size = len;
		1797	req->int1 = flags;
		1798
		1799	REQ_SEND;
		1800	}
		1801	}
		1802
		1803	void
		1804	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1805	PPCODE:
		1806	{
		1807	STRLEN svlen;
		1808	char *svptr = SvPVbyte (data, svlen);
		1809	UV len = SvUV (length);
		1810
		1811	if (offset < 0)
		1812	offset += svlen;
		1813
		1814	if (offset < 0 || offset > svlen)
		1815	croak ("offset outside of scalar");
		1816
		1817	if (!SvOK (length) || len + offset > svlen)
		1818	len = svlen - offset;
		1819
		1820	{
		1821	dREQ;
		1822
		1823	req->type = EIO_MLOCK;
		1824	req->sv2 = SvREFCNT_inc (data);
		1825	req->ptr2 = (char *)svptr + offset;
		1826	req->size = len;
		1827
		1828	REQ_SEND;
		1829	}
		1830	}
		1831
		1832	void
		1833	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1834	PPCODE:
		1835	{
		1836	dREQ;
		1837
		1838	req->type = EIO_MLOCKALL;
		1839	req->int1 = flags;
		1840
		1841	REQ_SEND;
		1842	}
		1843
		1844	void
		1845	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1846	PPCODE:
		1847	{
		1848	int fd = s_fileno_croak (fh, 0);
		1849	dREQ;
		1850
		1851	req->type = EIO_CUSTOM;
		1852	req->sv1 = newSVsv (fh);
		1853	req->int1 = fd;
		1854
		1855	req->feed = fiemap;
		1856	#if HAVE_FIEMAP
		1857	/* keep our fingers crossed that the next two types are 64 bit */
		1858	req->offs = start;
		1859	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1860	req->int2 = flags;
		1861	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1862	#endif
		1863
		1864	REQ_SEND;
		1865	}
		1866
		1867	void
		1868	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1869	PPCODE:
		1870	{
		1871	char *svptr = 0;
		1872
		1873	sv_clear_foreign (data);
		1874
		1875	if (length) /* known length, directly read into scalar */
		1876	{
		1877	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1878	svptr = sv_grow (data, length + 1);
		1879	else if (SvCUR (data) < length)
		1880	croak ("length outside of scalar, and cannot grow");
		1881	else
		1882	svptr = SvPVbyte_nolen (data);
		1883	}
		1884
		1885	{
		1886	dREQ;
		1887
		1888	req->type = EIO_SLURP;
		1889	req_set_path1 (req, pathname);
		1890	req->offs = offset;
		1891	req->size = length;
		1892	req->sv2 = SvREFCNT_inc (data);
		1893	req->ptr2 = svptr;
		1894
		1895	if (!SvREADONLY (data))
		1896	{
		1897	SvREADONLY_on (data);
		1898	req->flags |= FLAG_SV2_RO_OFF;
		1899	}
		1900
		1901	REQ_SEND;
		1902	}
		1903	}
		1904
		1905	void
		1906	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1907	PPCODE:
		1908	{
		1909	dREQ;
		1910
1873	req->type = REQ_BUSY;	1911	req->type = EIO_BUSY;
1874	req->nv1 = delay < 0. ? 0. : delay;	1912	req->nv1 = delay < 0. ? 0. : delay;
1875		1913
1876	REQ_SEND;	1914	REQ_SEND;
1877	}	1915	}
1878		1916
1879	void	1917	void
1880	aio_group (SV *callback=&PL_sv_undef)	1918	aio_group (SV *callback = &PL_sv_undef)
1881	PROTOTYPE: ;$
1882	PPCODE:	1919	PPCODE:
1883	{	1920	{
1884	dREQ;	1921	dREQ;
1885		1922
1886	req->type = REQ_GROUP;	1923	req->type = EIO_GROUP;
1887		1924
		1925	PUTBACK;
1888	req_send (req);	1926	req_submit (req);
		1927	SPAGAIN;
		1928
1889	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1929	XPUSHs (req_sv (req, aio_grp_stash));
1890	}	1930	}
1891		1931
1892	void	1932	void
1893	aio_nop (SV *callback=&PL_sv_undef)	1933	aio_nop (SV *callback = &PL_sv_undef)
1894	ALIAS:	1934	ALIAS:
1895	aio_nop = REQ_NOP	1935	aio_nop = EIO_NOP
1896	aio_sync = REQ_SYNC	1936	aio_sync = EIO_SYNC
1897	PPCODE:	1937	PPCODE:
1898	{	1938	{
1899	dREQ;	1939	dREQ;
1900		1940
1901	req->type = ix;	1941	req->type = ix;
1902		1942
1903	REQ_SEND;	1943	REQ_SEND;
1904	}	1944	}
1905		1945
1906	int	1946	int
1907	aioreq_pri (int pri = 0)	1947	aioreq_pri (int pri = NO_INIT)
1908	PROTOTYPE: ;$
1909	CODE:	1948	CODE:
1910	RETVAL = next_pri - PRI_BIAS;	1949	RETVAL = next_pri;
1911	if (items > 0)	1950	if (items > 0)
1912	{	1951	{
1913	if (pri < PRI_MIN) pri = PRI_MIN;	1952	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1914	if (pri > PRI_MAX) pri = PRI_MAX;	1953	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1915	next_pri = pri + PRI_BIAS;	1954	next_pri = pri;
1916	}	1955	}
1917	OUTPUT:	1956	OUTPUT:
1918	RETVAL	1957	RETVAL
1919		1958
1920	void	1959	void
1921	aioreq_nice (int nice = 0)	1960	aioreq_nice (int nice = 0)
1922	CODE:	1961	CODE:
1923	nice = next_pri - nice;	1962	nice = next_pri - nice;
1924	if (nice < PRI_MIN) nice = PRI_MIN;	1963	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1925	if (nice > PRI_MAX) nice = PRI_MAX;	1964	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1926	next_pri = nice + PRI_BIAS;	1965	next_pri = nice;
1927		1966
1928	void	1967	void
1929	flush ()	1968	flush ()
1930	PROTOTYPE:
1931	CODE:	1969	CODE:
1932	while (nreqs)	1970	while (eio_nreqs ())
1933	{	1971	{
1934	poll_wait ();	1972	poll_wait ();
1935	poll_cb ();	1973	poll_cb ();
1936	}	1974	}
1937		1975
1938	int	1976	int
1939	poll()	1977	poll ()
1940	PROTOTYPE:
1941	CODE:	1978	CODE:
1942	poll_wait ();	1979	poll_wait ();
1943	RETVAL = poll_cb ();	1980	RETVAL = poll_cb ();
1944	OUTPUT:	1981	OUTPUT:
1945	RETVAL	1982	RETVAL
1946		1983
1947	int	1984	int
1948	poll_fileno()	1985	poll_fileno ()
1949	PROTOTYPE:
1950	CODE:	1986	CODE:
1951	RETVAL = respipe [0];	1987	RETVAL = s_epipe_fd (&respipe);
1952	OUTPUT:	1988	OUTPUT:
1953	RETVAL	1989	RETVAL
1954		1990
1955	int	1991	int
1956	poll_cb(...)	1992	poll_cb (...)
1957	PROTOTYPE:	1993	PROTOTYPE:
1958	CODE:	1994	CODE:
1959	RETVAL = poll_cb ();	1995	RETVAL = poll_cb ();
1960	OUTPUT:	1996	OUTPUT:
1961	RETVAL	1997	RETVAL
1962		1998
1963	void	1999	void
1964	poll_wait()	2000	poll_wait ()
1965	PROTOTYPE:
1966	CODE:	2001	CODE:
1967	poll_wait ();	2002	poll_wait ();
1968		2003
1969	void
1970	setsig (int signum = SIGIO)
1971	PROTOTYPE: ;$
1972	CODE:
1973	{
1974	if (block_sig_level)
1975	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1976
1977	X_LOCK (reslock);
1978	main_tid = pthread_self ();
1979	main_sig = signum;
1980	X_UNLOCK (reslock);
1981
1982	if (main_sig && npending)
1983	pthread_kill (main_tid, main_sig);
1984	}
1985
1986	void
1987	aio_block (SV *cb)
1988	PROTOTYPE: &
1989	PPCODE:
1990	{
1991	int count;
1992
1993	block_sig ();
1994	PUSHMARK (SP);
1995	PUTBACK;
1996	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1997	SPAGAIN;
1998	unblock_sig ();
1999
2000	if (SvTRUE (ERRSV))
2001	croak (0);
2002
2003	XSRETURN (count);
2004	}
2005
2006	int	2004	int
2007	nreqs()	2005	nreqs ()
2008	PROTOTYPE:
2009	CODE:	2006	CODE:
2010	RETVAL = nreqs;	2007	RETVAL = eio_nreqs ();
2011	OUTPUT:	2008	OUTPUT:
2012	RETVAL	2009	RETVAL
2013		2010
2014	int	2011	int
2015	nready()	2012	nready ()
2016	PROTOTYPE:
2017	CODE:	2013	CODE:
2018	RETVAL = get_nready ();	2014	RETVAL = eio_nready ();
2019	OUTPUT:	2015	OUTPUT:
2020	RETVAL	2016	RETVAL
2021		2017
2022	int	2018	int
2023	npending()	2019	npending ()
2024	PROTOTYPE:
2025	CODE:	2020	CODE:
2026	RETVAL = get_npending ();	2021	RETVAL = eio_npending ();
2027	OUTPUT:	2022	OUTPUT:
2028	RETVAL	2023	RETVAL
2029		2024
2030	int	2025	int
2031	nthreads()	2026	nthreads ()
2032	PROTOTYPE:
2033	CODE:	2027	CODE:
2034	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	2028	RETVAL = eio_nthreads ();
2035	RETVAL = started;
2036	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2037	OUTPUT:	2029	OUTPUT:
2038	RETVAL	2030	RETVAL
2039		2031
		2032	int
		2033	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2034	CODE:
		2035	RETVAL = posix_fadvise (fh, offset, length, advice);
		2036	OUTPUT:
		2037	RETVAL
		2038
		2039	IV
		2040	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2041	CODE:
		2042	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2043	OUTPUT:
		2044	RETVAL
		2045
		2046	void
		2047	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2048	PPCODE:
		2049	sv_clear_foreign (scalar);
		2050	{
		2051	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2052	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2053	if (addr == (void *)-1)
		2054	XSRETURN_NO;
		2055
		2056	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2057
		2058	if (!(prot & PROT_WRITE))
		2059	SvREADONLY_on (scalar);
		2060
		2061	XSRETURN_YES;
		2062	}
		2063
		2064	void
		2065	munmap (SV *scalar)
		2066	CODE:
		2067	sv_clear_foreign (scalar);
		2068
		2069	SV *
		2070	mremap (SV *scalar, STRLEN new_length, int flags = 0, IV new_address = 0)
		2071	CODE:
		2072	{
		2073	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2074	void *new;
		2075
		2076	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2077	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2078
		2079	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2080
		2081	RETVAL = &PL_sv_no;
		2082
		2083	if (new != (void *)-1)
		2084	{
		2085	RETVAL = new == (void *)mg->mg_ptr
		2086	? newSVpvn ("0 but true", 10)
		2087	: &PL_sv_yes;
		2088
		2089	mg->mg_ptr = (char *)new;
		2090	mg->mg_obj = (SV *)new_length;
		2091
		2092	SvPVX (scalar) = mg->mg_ptr;
		2093	SvCUR_set (scalar, new_length);
		2094	}
		2095	}
		2096	OUTPUT:
		2097	RETVAL
		2098
		2099	int
		2100	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2101	ALIAS:
		2102	mprotect = 1
		2103	CODE:
		2104	{
		2105	STRLEN svlen;
		2106	void *addr = SvPVbyte (scalar, svlen);
		2107	STRLEN len = SvUV (length);
		2108
		2109	if (offset < 0)
		2110	offset += svlen;
		2111
		2112	if (offset < 0 || offset > svlen)
		2113	croak ("offset outside of scalar");
		2114
		2115	if (!SvOK (length) || len + offset > svlen)
		2116	len = svlen - offset;
		2117
		2118	addr = (void *)(((intptr_t)addr) + offset);
		2119	eio_page_align (&addr, &len);
		2120
		2121	switch (ix)
		2122	{
		2123	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2124	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2125	}
		2126	}
		2127	OUTPUT:
		2128	RETVAL
		2129
		2130	int
		2131	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2132	CODE:
		2133	{
		2134	STRLEN svlen;
		2135	void *addr = SvPVbyte (scalar, svlen);
		2136	size_t len = SvUV (length);
		2137
		2138	if (offset < 0)
		2139	offset += svlen;
		2140
		2141	if (offset < 0 || offset > svlen)
		2142	croak ("offset outside of scalar");
		2143
		2144	if (!SvOK (length) || len + offset > svlen)
		2145	len = svlen - offset;
		2146
		2147	addr = (void *)(((intptr_t)addr) + offset);
		2148	eio_page_align (&addr, &len);
		2149	#if _POSIX_MEMLOCK_RANGE
		2150	RETVAL = munlock (addr, len);
		2151	#else
		2152	RETVAL = EIO_ENOSYS ();
		2153	#endif
		2154	}
		2155	OUTPUT:
		2156	RETVAL
		2157
		2158	int
		2159	munlockall ()
		2160	CODE:
		2161	#if _POSIX_MEMLOCK
		2162	munlockall ();
		2163	#else
		2164	RETVAL = EIO_ENOSYS ();
		2165	#endif
		2166	OUTPUT:
		2167	RETVAL
		2168
		2169	int
		2170	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2171	CODE:
		2172	{
		2173	#if HAVE_LINUX_SPLICE
		2174	loff_t off_in_, off_out_;
		2175	RETVAL = splice (
		2176	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2177	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2178	length, flags
		2179	);
		2180	#else
		2181	RETVAL = EIO_ENOSYS ();
		2182	#endif
		2183	}
		2184	OUTPUT:
		2185	RETVAL
		2186
		2187	int
		2188	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2189	CODE:
		2190	#if HAVE_LINUX_SPLICE
		2191	RETVAL = tee (rfh, wfh, length, flags);
		2192	#else
		2193	RETVAL = EIO_ENOSYS ();
		2194	#endif
		2195	OUTPUT:
		2196	RETVAL
		2197
		2198	int
		2199	pipesize (aio_rfd rfh, int new_size = -1)
		2200	PROTOTYPE: $;$
		2201	CODE:
		2202	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2203	if (new_size >= 0)
		2204	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2205	else
		2206	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2207	#else
		2208	errno = ENOSYS;
		2209	RETVAL = -1;
		2210	#endif
		2211	OUTPUT:
		2212	RETVAL
		2213
		2214	void
		2215	pipe2 (int flags = 0)
		2216	PROTOTYPE: ;$
		2217	PPCODE:
		2218	{
		2219	int fd[2];
		2220	int res;
		2221
		2222	if (flags)
		2223	#if HAVE_PIPE2
		2224	res = pipe2 (fd, flags);
		2225	#else
		2226	res = (errno = ENOSYS, -1);
		2227	#endif
		2228	else
		2229	res = pipe (fd);
		2230
		2231	if (!res)
		2232	{
		2233	EXTEND (SP, 2);
		2234	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2235	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2236	}
		2237	}
		2238
		2239	void
		2240	eventfd (unsigned int initval = 0, int flags = 0)
		2241	PPCODE:
		2242	{
		2243	int fd;
		2244	#if HAVE_EVENTFD
		2245	fd = eventfd (initval, flags);
		2246	#else
		2247	fd = (errno = ENOSYS, -1);
		2248	#endif
		2249
		2250	XPUSHs (newmortalFH (fd, O_RDWR));
		2251	}
		2252
		2253	void
		2254	timerfd_create (int clockid, int flags = 0)
		2255	PPCODE:
		2256	{
		2257	int fd;
		2258	#if HAVE_TIMERFD
		2259	fd = timerfd_create (clockid, flags);
		2260	#else
		2261	fd = (errno = ENOSYS, -1);
		2262	#endif
		2263
		2264	XPUSHs (newmortalFH (fd, O_RDWR));
		2265	}
		2266
		2267	void
		2268	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2269	PPCODE:
		2270	{
		2271	int fd = s_fileno_croak (fh, 0);
		2272	#if HAVE_TIMERFD
		2273	int res;
		2274	struct itimerspec its, ots;
		2275
		2276	ts_set (&its.it_interval, interval);
		2277	ts_set (&its.it_value , value);
		2278	res = timerfd_settime (fd, flags, &its, &ots);
		2279
		2280	if (!res)
		2281	{
		2282	EXTEND (SP, 2);
		2283	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2284	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2285	}
		2286	#else
		2287	errno = ENOSYS;
		2288	#endif
		2289	}
		2290
		2291	void
		2292	timerfd_gettime (SV *fh)
		2293	PPCODE:
		2294	{
		2295	int fd = s_fileno_croak (fh, 0);
		2296	#if HAVE_TIMERFD
		2297	int res;
		2298	struct itimerspec ots;
		2299	res = timerfd_gettime (fd, &ots);
		2300
		2301	if (!res)
		2302	{
		2303	EXTEND (SP, 2);
		2304	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2305	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2306	}
		2307	#else
		2308	errno = ENOSYS;
		2309	#endif
		2310	}
		2311
		2312	UV
		2313	get_fdlimit ()
		2314	CODE:
		2315	#if HAVE_RLIMITS
		2316	struct rlimit rl;
		2317	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2318	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2319	#endif
		2320	XSRETURN_UNDEF;
		2321	OUTPUT:
		2322	RETVAL
		2323
		2324	void
		2325	min_fdlimit (UV limit = 0x7fffffffU)
		2326	CODE:
		2327	{
		2328	#if HAVE_RLIMITS
		2329	struct rlimit rl;
		2330	rlim_t orig_rlim_max;
		2331	UV bit;
		2332
		2333	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2334	goto fail;
		2335
		2336	if (rl.rlim_cur == RLIM_INFINITY)
		2337	XSRETURN_YES;
		2338
		2339	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2340
		2341	if (rl.rlim_cur < limit)
		2342	{
		2343	rl.rlim_cur = limit;
		2344
		2345	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2346	rl.rlim_max = rl.rlim_cur;
		2347	}
		2348
		2349	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2350	XSRETURN_YES;
		2351
		2352	if (errno == EPERM)
		2353	{
		2354	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2355	/* our limit overflows a system-wide limit */
		2356	/* try an adaptive algorithm, but do not lower the hardlimit */
		2357	rl.rlim_max = 0;
		2358	for (bit = 0x40000000U; bit; bit >>= 1)
		2359	{
		2360	rl.rlim_max |= bit;
		2361	rl.rlim_cur = rl.rlim_max;
		2362
		2363	/* nevr decrease the hard limit */
		2364	if (rl.rlim_max < orig_rlim_max)
		2365	break;
		2366
		2367	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2368	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2369	}
		2370
		2371	/* now, raise the soft limit to the max permitted */
		2372	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2373	{
		2374	rl.rlim_cur = rl.rlim_max;
		2375	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2376	errno = EPERM;
		2377	}
		2378	}
		2379	#endif
		2380	fail:
		2381	XSRETURN_UNDEF;
		2382	}
		2383
		2384	void _on_next_submit (SV *cb)
		2385	CODE:
		2386	SvREFCNT_dec (on_next_submit);
		2387	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2388
2040	PROTOTYPES: DISABLE	2389	PROTOTYPES: DISABLE
		2390
		2391	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2392
		2393	BOOT:
		2394	{
		2395	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2396	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2397	}
		2398
		2399	void
		2400	DESTROY (SV *self)
		2401	CODE:
		2402	{
		2403	aio_wd wd = SvAIO_WD (self);
		2404	#if HAVE_AT
		2405	{
		2406	SV *callback = &PL_sv_undef;
		2407	dREQ; /* clobbers next_pri :/ */
		2408	next_pri = req->pri; /* restore next_pri */
		2409	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2410	req->type = EIO_WD_CLOSE;
		2411	req->wd = wd;
		2412	REQ_SEND;
		2413	}
		2414	#else
		2415	eio_wd_close_sync (wd);
		2416	#endif
		2417	}
2041		2418
2042	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2419	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2043		2420
2044	void	2421	void
2045	cancel (aio_req_ornot req)	2422	cancel (aio_req_ornot req)
2046	CODE:	2423	CODE:
2047	req_cancel (req);	2424	eio_cancel (req);
2048		2425
2049	void	2426	void
2050	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2427	cb (aio_req_ornot req, SV *callback = NO_INIT)
2051	CODE:	2428	PPCODE:
		2429	{
		2430	if (GIMME_V != G_VOID)
		2431	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2432
		2433	if (items > 1)
		2434	{
		2435	SV *cb_cv = get_cb (callback);
		2436
2052	SvREFCNT_dec (req->callback);	2437	SvREFCNT_dec (req->callback);
2053	req->callback = newSVsv (callback);	2438	req->callback = SvREFCNT_inc (cb_cv);
		2439	}
		2440	}
2054		2441
2055	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2442	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2056		2443
2057	void	2444	void
2058	add (aio_req grp, ...)	2445	add (aio_req grp, ...)
2059	PPCODE:	2446	PPCODE:
2060	{	2447	{
2061	int i;	2448	int i;
2062	aio_req req;
2063
2064	if (main_sig && !block_sig_level)
2065	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2066		2449
2067	if (grp->int1 == 2)	2450	if (grp->int1 == 2)
2068	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2451	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2069		2452
2070	for (i = 1; i < items; ++i )	2453	for (i = 1; i < items; ++i )
2071	{	2454	{
		2455	aio_req req;
		2456
2072	if (GIMME_V != G_VOID)	2457	if (GIMME_V != G_VOID)
2073	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2458	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2074		2459
2075	req = SvAIO_REQ (ST (i));	2460	req = SvAIO_REQ (ST (i));
2076		2461
2077	if (req)	2462	if (req)
2078	{	2463	eio_grp_add (grp, req);
2079	++grp->size;
2080	req->grp = grp;
2081
2082	req->grp_prev = 0;
2083	req->grp_next = grp->grp_first;
2084
2085	if (grp->grp_first)
2086	grp->grp_first->grp_prev = req;
2087
2088	grp->grp_first = req;
2089	}
2090	}	2464	}
2091	}	2465	}
2092		2466
2093	void	2467	void
2094	cancel_subs (aio_req_ornot req)	2468	cancel_subs (aio_req_ornot req)
…		…
2103	AV *av;	2477	AV *av;
2104		2478
2105	grp->errorno = errno;	2479	grp->errorno = errno;
2106		2480
2107	av = newAV ();	2481	av = newAV ();
		2482	av_extend (av, items - 1);
2108		2483
2109	for (i = 1; i < items; ++i )	2484	for (i = 1; i < items; ++i )
2110	av_push (av, newSVsv (ST (i)));	2485	av_push (av, newSVsv (ST (i)));
2111		2486
2112	SvREFCNT_dec (grp->sv1);	2487	SvREFCNT_dec (grp->sv1);
…		…
2119	grp->errorno = errorno;	2494	grp->errorno = errorno;
2120		2495
2121	void	2496	void
2122	limit (aio_req grp, int limit)	2497	limit (aio_req grp, int limit)
2123	CODE:	2498	CODE:
2124	grp->int2 = limit;	2499	eio_grp_limit (grp, limit);
2125	aio_grp_feed (grp);
2126		2500
2127	void	2501	void
2128	feed (aio_req grp, SV *callback=&PL_sv_undef)	2502	feed (aio_req grp, SV *callback = &PL_sv_undef)
2129	CODE:	2503	CODE:
2130	{	2504	{
2131	SvREFCNT_dec (grp->sv2);	2505	SvREFCNT_dec (grp->sv2);
2132	grp->sv2 = newSVsv (callback);	2506	grp->sv2 = newSVsv (callback);
		2507	grp->feed = aio_grp_feed;
2133		2508
2134	if (grp->int2 <= 0)	2509	if (grp->int2 <= 0)
2135	grp->int2 = 2;	2510	grp->int2 = 2;
2136		2511
2137	aio_grp_feed (grp);	2512	eio_grp_limit (grp, grp->int2);
2138	}	2513	}
2139		2514

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines