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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.100 by root, Fri Jun 1 06:00:40 2007 UTC vs.
Revision 1.268 by root, Thu Nov 29 19:49:48 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"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#if !defined mg_findext
		10	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		11	#endif
10		12
11	#include <stddef.h>	13	#include <stddef.h>
12	#include <stdlib.h>	14	#include <stdlib.h>
13	#include <errno.h>	15	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	16	#include <sys/types.h>
		17	#include <sys/socket.h>
17	#include <sys/stat.h>	18	#include <sys/stat.h>
18	#include <limits.h>	19	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	20	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	21	#include <sched.h>
		22
		23	/* the incompetent fool that created musl keeps __linux__, refuses
		24	* to implement any linux standard apis, and also has no way to test
		25	* for his broken iplementation. don't complain to me if this fails
		26	* for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79	#undef utime
		80
		81	#define EIO_STRUCT_STAT struct _stati64
		82	#define EIO_STRUCT_STATI64
		83
		84	#else
		85
		86	#include <sys/time.h>
		87	#include <sys/select.h>
		88	#include <unistd.h>
23	#include <utime.h>	89	#include <utime.h>
		90	#include <signal.h>
24		91
25	#if HAVE_SENDFILE	92	#define EIO_STRUCT_STAT Stat_t
26	# if __linux	93
27	# include <sys/sendfile.h>	94	#endif
28	# elif __freebsd	95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "config.h"
		110
		111	#if HAVE_SYS_MKDEV_H
29	# include <sys/socket.h>	112	# include <sys/mkdev.h>
		113	#elif HAVE_SYS_SYSMACROS_H
		114	# include <sys/sysmacros.h>
		115	#endif
		116
		117	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
30	# include <sys/uio.h>	118	# include <sys/mman.h>
31	# elif __hpux	119	#endif
32	# include <sys/socket.h>	120
33	# elif __solaris /* not yet */	121	#if HAVE_ST_XTIMENSEC
		122	# define ATIMENSEC PL_statcache.st_atimensec
		123	# define MTIMENSEC PL_statcache.st_mtimensec
		124	# define CTIMENSEC PL_statcache.st_ctimensec
		125	#elif HAVE_ST_XTIMESPEC
		126	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		127	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		128	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		129	#else
		130	# define ATIMENSEC 0
		131	# define MTIMENSEC 0
		132	# define CTIMENSEC 0
		133	#endif
		134
		135	#if HAVE_ST_BIRTHTIMENSEC
		136	# define BTIMESEC PL_statcache.st_birthtime
		137	# define BTIMENSEC PL_statcache.st_birthtimensec
		138	#elif HAVE_ST_BIRTHTIMESPEC
		139	# define BTIMESEC PL_statcache.st_birthtim.tv_sec
		140	# define BTIMENSEC PL_statcache.st_birthtim.tv_nsec
		141	#else
		142	# define BTIMESEC 0
		143	# define BTIMENSEC 0
		144	#endif
		145
		146	#if HAVE_ST_GEN
		147	# define ST_GEN PL_statcache.st_gen
		148	#else
		149	# define ST_GEN 0
		150	#endif
		151
		152	#include "schmorp.h"
		153
		154	#if HAVE_EVENTFD
34	# include <sys/sendfile.h>	155	# include <sys/eventfd.h>
		156	#endif
		157
		158	#if HAVE_TIMERFD
		159	# include <sys/timerfd.h>
		160	#endif
		161
		162	#if HAVE_RLIMITS
		163	#include <sys/time.h>
		164	#include <sys/resource.h>
		165	#endif
		166
		167	typedef SV SV8; /* byte-sv, used for argument-checking */
		168	typedef int aio_rfd; /* read file desriptor */
		169	typedef int aio_wfd; /* write file descriptor */
		170
		171	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		172
		173	#define EIO_REQ_MEMBERS \
		174	SV *callback; \
		175	SV *sv1, *sv2; \
		176	SV *sv3, *sv4; \
		177	STRLEN stroffset; \
		178	SV *self;
		179
		180	#define EIO_NO_WRAPPERS 1
		181
		182	#include "libeio/eio.h"
		183
		184	static int req_invoke (eio_req *req);
		185	#define EIO_FINISH(req) req_invoke (req)
		186	static void req_destroy (eio_req *grp);
		187	#define EIO_DESTROY(req) req_destroy (req)
		188
		189	#include "libeio/eio.c"
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#if !HAVE_POSIX_MADVISE
		196	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		197	#endif
		198
		199	#ifndef MAP_ANONYMOUS
		200	# ifdef MAP_ANON
		201	# define MAP_ANONYMOUS MAP_ANON
35	# else	202	# else
36	# error sendfile support requested but not available	203	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	204	# endif
38	#endif	205	#endif
39		206
40	/* number of seconds after which idle threads exit */	207	#ifndef makedev
41	#define IDLE_TIMEOUT 10	208	# define makedev(maj,min) (((maj) << 8) | (min))
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif	209	#endif
		210	#ifndef major
		211	# define major(dev) ((dev) >> 8)
		212	#endif
		213	#ifndef minor
		214	# define minor(dev) ((dev) & 0xff)
		215	#endif
47		216
48	/* buffer size for various temporary buffers */	217	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
49	#define AIO_BUFSIZE 65536	218	#ifdef __sun
		219	# undef PAGESIZE
		220	#endif
50		221
51	#define dBUF \	222	#if PAGESIZE <= 0
52	char *aio_buf; \	223	# define PAGESIZE sysconf (_SC_PAGESIZE)
53	LOCK (wrklock); \	224	#endif
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	225
55	UNLOCK (wrklock); \	226	/*****************************************************************************/
56	if (!aio_buf) \	227
		228	#if !_POSIX_MAPPED_FILES
		229	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		230	# define munmap(addr,length) EIO_ENOSYS ()
		231	#endif
		232
		233	#if !_POSIX_MEMORY_PROTECTION
		234	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		235	#endif
		236
		237	#if !MREMAP_MAYMOVE
		238	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		239	#endif
		240
		241	#define FOREIGN_MAGIC PERL_MAGIC_ext
		242
		243	static int ecb_cold
		244	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		245	{
		246	int old_errno = errno;
		247	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		248	errno = old_errno;
		249
		250	mg->mg_obj = 0; /* just in case */
		251
		252	SvREADONLY_off (sv);
		253
		254	if (SvPVX (sv) != mg->mg_ptr)
		255	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		256
		257	SvCUR_set (sv, 0);
		258	SvPVX (sv) = 0;
		259	SvOK_off (sv);
		260
57	return -1;	261	return 0;
		262	}
58		263
59	typedef SV SV8; /* byte-sv, used for argument-checking */	264	static MGVTBL mmap_vtbl = {
60		265	0, 0, 0, 0, mmap_free
61	enum {
62	REQ_QUIT,
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	266	};
77		267
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	268	static int ecb_cold
79	#define AIO_GRP_KLASS "IO::AIO::GRP"	269	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
80
81	typedef struct aio_cb
82	{	270	{
83	struct aio_cb *volatile next;	271	free (mg->mg_ptr);
		272	mg->mg_obj = 0; /* just in case */
84		273
85	SV *callback;	274	SvREADONLY_off (sv);
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92		275
93	STRLEN stroffset;	276	if (SvPVX (sv) != mg->mg_ptr)
94	int type;	277	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98		278
99	unsigned char flags;	279	SvCUR_set (sv, 0);
100	unsigned char pri;	280	SvPVX (sv) = 0;
		281	SvOK_off (sv);
101		282
102	SV *self; /* the perl counterpart of this request, if any */	283	return 0;
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	284	}
104	} aio_cb;
105		285
106	enum {	286	static MGVTBL sysfree_vtbl = {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */	287	0, 0, 0, 0, sysfree_free
108	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};	288	};
111		289
112	typedef aio_cb *aio_req;	290	/*****************************************************************************/
113	typedef aio_cb *aio_req_ornot;
114		291
115	enum {	292	/* helper: set scalar to foreign ptr with custom free */
116	PRI_MIN = -4,	293	static void
117	PRI_MAX = 4,	294	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
118
119	DEFAULT_PRI = 0,
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{	295	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	296	sv_force_normal (sv);
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135		297
136	static thread_t main_tid;	298	/* we store the length in mg_obj, as namlen is I32 :/ */
137	static int main_sig;	299	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
138	static int block_sig_level;	300	->mg_obj = (SV *)length;
139		301
140	void block_sig ()	302	SvUPGRADE (sv, SVt_PV); /* nop... */
141	{
142	sigset_t ss;
143		303
144	if (block_sig_level++)	304	if (SvLEN (sv))
		305	Safefree (SvPVX (sv));
		306
		307	SvPVX (sv) = (char *)addr;
		308	SvCUR_set (sv, length);
		309	SvLEN_set (sv, 0);
		310	SvPOK_only (sv);
		311	}
		312
		313	static void
		314	sv_clear_foreign (SV *sv)
		315	{
		316	/* todo: iterate over magic and only free ours, but of course */
		317	/* the perl5porters will call that (correct) behaviour buggy */
		318	sv_unmagic (sv, FOREIGN_MAGIC);
		319	}
		320
		321	/*****************************************************************************/
		322
		323	/* defines all sorts of constants to 0 unless they are already defined */
		324	/* also provides const_iv_ and const_niv_ macros for them */
		325	#include "def0.h"
		326
		327	/*****************************************************************************/
		328
		329	static void
		330	fiemap (eio_req *req)
		331	{
		332	req->result = -1;
		333
		334	#if HAVE_FIEMAP
		335	/* assume some c99 */
		336	struct fiemap *fiemap = 0;
		337	size_t end_offset;
		338	int count = req->int3;
		339
		340	req->flags |= EIO_FLAG_PTR1_FREE;
		341
		342	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		343	/* increase in 3.5kb steps */
		344	if (count < 0)
		345	count = 8;
		346
		347	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		348	errno = ENOMEM;
		349	if (!fiemap)
145	return;	350	return;
146		351
147	if (!main_sig)	352	req->ptr1 = fiemap;
		353
		354	fiemap->fm_start = req->offs;
		355	fiemap->fm_length = req->size;
		356	fiemap->fm_flags = req->int2;
		357	fiemap->fm_extent_count = count;
		358
		359	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
148	return;	360	return;
149		361
150	sigemptyset (&ss);	362	if (req->int3 >= 0 /* not autosizing */
151	sigaddset (&ss, main_sig);	363	|| !fiemap->fm_mapped_extents /* no more extents */
152	pthread_sigmask (SIG_BLOCK, &ss, 0);	364	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
153	}	365	goto done;
154		366
155	void unblock_sig ()	367	/* else we have to loop -
156	{	368	* it would be tempting (actually I tried that first) to just query the
157	sigset_t ss;	369	* number of extents needed, but linux often feels like not returning all
		370	* extents, without telling us it left any out. this complicates
		371	* this quite a bit.
		372	*/
158		373
159	if (--block_sig_level)	374	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
160	return;
161		375
162	if (!main_sig)	376	for (;;)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{	377	{
195	closedir (wrk->dirp);	378	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
196	wrk->dirp = 0;	379	char scratch[3072];
197	}	380	struct fiemap *incmap = (struct fiemap *)scratch;
198		381
199	if (wrk->dbuf)	382	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
200	{	383	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
201	free (wrk->dbuf);	384	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
202	wrk->dbuf = 0;	385	incmap->fm_flags = fiemap->fm_flags;
203	}	386	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
204	}
205		387
206	static void worker_free (worker *wrk)	388	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;	389	return;
301		390
302	--q->size;	391	if (!incmap->fm_mapped_extents)
		392	goto done;
303		393
304	for (pri = NUM_PRI; pri--; )	394	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
305	{	395	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
306	aio_req req = q->qs[pri];	396	errno = ENOMEM;
307
308	if (req)	397	if (!fiemap)
		398	return;
		399
		400	req->ptr1 = fiemap;
		401
		402	for (count = 0; count < incmap->fm_mapped_extents; ++count)
309	{	403	{
310	if (!(q->qs[pri] = req->next))	404	struct fiemap_extent *e = incmap->fm_extents + count;
311	q->qe[pri] = 0;
312		405
313	return req;	406	if (e->fe_logical + e->fe_length >= end_offset)
		407	goto done;
		408
		409	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		410
		411	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		412	goto done;
		413
314	}	414	}
315	}	415	}
316		416
317	abort ();	417	done:
318	}	418	req->result = 0;
319		419
320	static int poll_cb ();	420	#else
321	static int req_invoke (aio_req req);	421	errno = ENOSYS;
		422	#endif
		423	}
		424
		425	/*****************************************************************************/
		426
		427	static int close_fd; /* dummy fd to close fds via dup2 */
		428
		429	enum {
		430	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		431	};
		432
		433	typedef eio_req *aio_req;
		434	typedef eio_req *aio_req_ornot;
		435	typedef eio_wd aio_wd;
		436
		437	static SV *on_next_submit;
		438	static int next_pri = EIO_PRI_DEFAULT;
		439	static int max_outstanding;
		440
		441	static s_epipe respipe;
		442
322	static void req_free (aio_req req);	443	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	444	static void req_cancel (aio_req req);
324		445
		446	static void
		447	want_poll (void)
		448	{
		449	/* write a dummy byte to the pipe so fh becomes ready */
		450	s_epipe_signal (&respipe);
		451	}
		452
		453	static void
		454	done_poll (void)
		455	{
		456	/* read any signals sent by the worker threads */
		457	s_epipe_drain (&respipe);
		458	}
		459
325	/* must be called at most once */	460	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	461	static SV *
		462	req_sv (aio_req req, HV *stash)
327	{	463	{
328	if (!req->self)	464	if (!req->self)
329	{	465	{
330	req->self = (SV *)newHV ();	466	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	467	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	468	}
333		469
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	470	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	471	}
336		472
337	static aio_req SvAIO_REQ (SV *sv)	473	static SV *
		474	newSVaio_wd (aio_wd wd)
		475	{
		476	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		477	}
		478
		479	static aio_req
		480	SvAIO_REQ (SV *sv)
338	{	481	{
339	MAGIC *mg;	482	MAGIC *mg;
340		483
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	484	if (!SvROK (sv)
		485	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		486	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		487	&& SvSTASH (SvRV (sv)) != aio_req_stash
		488	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	489	croak ("object of class IO::AIO::REQ expected");
343		490
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	491	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		492
346	return mg ? (aio_req)mg->mg_ptr : 0;	493	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	494	}
348		495
		496	static aio_wd
		497	SvAIO_WD (SV *sv)
		498	{
		499	if (!SvROK (sv)
		500	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		501	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		502	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		503
		504	return (aio_wd)(long)SvIVX (SvRV (sv));
		505	}
		506
		507	static SV *
		508	newmortalFH (int fd, int flags)
		509	{
		510	if (fd < 0)
		511	return &PL_sv_undef;
		512
		513	GV *gv = (GV *)sv_newmortal ();
		514	char sym[64];
		515	int symlen;
		516
		517	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		518	gv_init (gv, aio_stash, sym, symlen, 0);
		519
		520	symlen = snprintf (
		521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	fd
		526	);
		527
		528	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		529	? (SV *)gv : &PL_sv_undef;
		530	}
		531
		532	static void
349	static void aio_grp_feed (aio_req grp)	533	aio_grp_feed (aio_req grp)
350	{	534	{
351	block_sig ();	535	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	536	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	537	dSP;
360		538
361	ENTER;	539	ENTER;
362	SAVETMPS;	540	SAVETMPS;
363	PUSHMARK (SP);	541	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	542	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	543	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	544	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	545	SPAGAIN;
368	FREETMPS;	546	FREETMPS;
369	LEAVE;	547	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	548	}
380
381	unblock_sig ();
382	}	549	}
383		550
384	static void aio_grp_dec (aio_req grp)	551	static void
		552	req_submit (eio_req *req)
385	{	553	{
386	--grp->size;	554	eio_submit (req);
387		555
388	/* call feeder, if applicable */	556	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	557	{
394	block_sig ();	558	dSP;
		559	SV *cb = sv_2mortal (on_next_submit);
395		560
396	if (!req_invoke (grp))	561	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		562
403	req_free (grp);	563	PUSHMARK (SP);
404	unblock_sig ();	564	PUTBACK;
		565	call_sv (cb, G_DISCARD | G_EVAL);
405	}	566	}
406	}	567	}
407		568
		569	static int
408	static int req_invoke (aio_req req)	570	req_invoke (eio_req *req)
409	{	571	{
410	dSP;
411
412	if (req->flags & FLAG_SV2_RO_OFF)	572	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv2);	573	SvREADONLY_off (req->sv2);
414		574
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	575	if (!EIO_CANCELLED (req) && req->callback)
416	{	576	{
		577	dSP;
		578	static SV *sv_result_cache; /* caches the result integer SV */
		579	SV *sv_result;
		580
417	ENTER;	581	ENTER;
418	SAVETMPS;	582	SAVETMPS;
419	PUSHMARK (SP);	583	PUSHMARK (SP);
420	EXTEND (SP, 1);	584	EXTEND (SP, 1);
421		585
		586	/* do not recreate the result IV from scratch each time */
		587	if (expect_true (sv_result_cache))
		588	{
		589	sv_result = sv_result_cache; sv_result_cache = 0;
		590	SvIV_set (sv_result, req->result);
		591	SvIOK_only (sv_result);
		592	}
		593	else
		594	{
		595	sv_result = newSViv (req->result);
		596	SvREADONLY_on (sv_result);
		597	}
		598
422	switch (req->type)	599	switch (req->type)
423	{	600	{
		601	case EIO_WD_OPEN:
		602	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		603	break;
		604
424	case REQ_READDIR:	605	case EIO_READDIR:
425	{	606	{
426	SV *rv = &PL_sv_undef;	607	SV *rv = &PL_sv_undef;
427		608
428	if (req->result >= 0)	609	if (req->result >= 0)
429	{	610	{
430	int i;	611	int i;
431	char *buf = req->ptr2;	612	char *names = (char *)req->ptr2;
		613	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	614	AV *av = newAV ();
433		615
434	av_extend (av, req->result - 1);	616	av_extend (av, req->result - 1);
435		617
436	for (i = 0; i < req->result; ++i)	618	for (i = 0; i < req->result; ++i)
437	{	619	{
438	SV *sv = newSVpv (buf, 0);	620	if (req->int1 & EIO_READDIR_DENTS)
		621	{
		622	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		623
		624	if (req->int1 & EIO_READDIR_CUSTOM2)
		625	{
		626	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		627	AV *avent = newAV ();
		628
		629	av_extend (avent, 2);
		630
		631	if (!sv_type [ent->type])
		632	{
		633	sv_type [ent->type] = newSViv (ent->type);
		634	SvREADONLY_on (sv_type [ent->type]);
		635	}
		636
		637	av_store (avent, 0, namesv);
		638	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		639	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		640
		641	av_store (av, i, newRV_noinc ((SV *)avent));
		642	}
		643	else
440	av_store (av, i, sv);	644	av_store (av, i, namesv);
		645
		646	++ent;
		647	}
		648	else
		649	{
		650	SV *name = newSVpv (names, 0);
		651	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	652	names += SvCUR (name) + 1;
		653	}
442	}	654	}
443		655
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	656	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	657	}
446		658
447	PUSHs (rv);	659	PUSHs (rv);
		660
		661	if (req->int1 & EIO_READDIR_CUSTOM1)
		662	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	663	}
449	break;	664	break;
450		665
451	case REQ_OPEN:	666	case EIO_OPEN:
		667	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		668	break;
		669
		670	case EIO_STATVFS:
		671	case EIO_FSTATVFS:
452	{	672	{
453	/* convert fd to fh */	673	SV *rv = &PL_sv_undef;
454	SV *fh;	674
		675	#ifndef _WIN32
		676	if (req->result >= 0)
		677	{
		678	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		679	HV *hv = newHV ();
		680	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		681	* chooses to make it a struct.
		682	*/
		683	unsigned long fsid = 0;
		684	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
455		685
456	PUSHs (sv_2mortal (newSViv (req->result)));	686	rv = sv_2mortal (newRV_noinc ((SV *)hv));
457	PUTBACK;
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
459	SPAGAIN;
460		687
461	fh = POPs;	688	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
462	PUSHMARK (SP);	689	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		690	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		691	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		692	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		693	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		694	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		695	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		696	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		697	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		698	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		699	}
		700	#endif
		701
463	XPUSHs (fh);	702	PUSHs (rv);
464	}	703	}
		704
465	break;	705	break;
466		706
467	case REQ_GROUP:	707	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	708	req->int1 = 2; /* mark group as finished */
469		709
470	if (req->sv1)	710	if (req->sv1)
471	{	711	{
472	int i;	712	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	716	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	717	PUSHs (*av_fetch (av, i, 0));
478	}	718	}
479	break;	719	break;
480		720
481	case REQ_NOP:	721	case EIO_NOP:
482	case REQ_BUSY:	722	case EIO_BUSY:
483	break;	723	break;
484		724
485	case REQ_READLINK:	725	case EIO_READLINK:
		726	case EIO_REALPATH:
486	if (req->result > 0)	727	if (req->result > 0)
		728	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		729	break;
		730
		731	case EIO_STAT:
		732	case EIO_LSTAT:
		733	case EIO_FSTAT:
		734	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		735
		736	if (!(PL_laststatval = req->result))
		737	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		738	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		739
		740	PUSHs (sv_result);
		741	break;
		742
		743	case EIO_SEEK:
		744	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		745	break;
		746
		747	case EIO_READ:
		748	{
		749	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		750	*SvEND (req->sv2) = 0;
		751	SvPOK_only (req->sv2);
		752	SvSETMAGIC (req->sv2);
		753	PUSHs (sv_result);
		754	}
		755	break;
		756
		757	case EIO_SLURP:
		758	{
		759	if (req->result >= 0)
		760	{
		761	/* if length was originally not known, we steal the malloc'ed memory */
		762	if (req->flags & EIO_FLAG_PTR2_FREE)
		763	{
		764	req->flags &= ~EIO_FLAG_PTR2_FREE;
		765	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		766	}
		767	else
		768	{
		769	SvCUR_set (req->sv2, req->result);
		770	*SvEND (req->sv2) = 0;
		771	SvPOK_only (req->sv2);
		772	}
		773
		774	SvSETMAGIC (req->sv2);
		775	}
		776
		777	PUSHs (sv_result);
		778	}
		779	break;
		780
		781	case EIO_CUSTOM:
		782	if (req->feed == fiemap)
487	{	783	{
488	SvCUR_set (req->sv2, req->result);	784	#if HAVE_FIEMAP
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);	785	if (!req->result)
		786	{
		787	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		788
		789	if (fiemap->fm_extent_count)
		790	{
		791	AV *av = newAV ();
		792	int i;
		793
		794	while (fiemap->fm_mapped_extents)
		795	{
		796	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		797	AV *ext_av = newAV ();
		798
		799	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		800	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		801	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		802	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		803
		804	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		805	}
		806
		807	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		808	}
		809	else
		810	{
		811	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		812	PUSHs (sv_result);
		813	}
		814	}
		815	#endif
491	}	816	}
		817	else
		818	PUSHs (sv_result);
492	break;	819	break;
493		820
494	case REQ_STAT:	821	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
495	case REQ_LSTAT:	822	if (req->result > 0)
496	case REQ_FSTAT:	823	SvIV_set (sv_result, 0);
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	824	/* FALLTHROUGH */
498	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));
501	break;
502
503	case REQ_READ:
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));
507	break;
508		825
509	default:	826	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	827	PUSHs (sv_result);
511	break;	828	break;
512	}	829	}
513		830
514	errno = req->errorno;	831	errno = req->errorno;
515		832
516	PUTBACK;	833	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	834	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	835	SPAGAIN;
		836
		837	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		838	SvREFCNT_dec (sv_result);
		839	else
		840	sv_result_cache = sv_result;
519		841
520	FREETMPS;	842	FREETMPS;
521	LEAVE;	843	LEAVE;
		844
		845	PUTBACK;
522	}	846	}
523		847
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	848	return !!SvTRUE (ERRSV);
539	}	849	}
540		850
541	static void req_free (aio_req req)	851	static void
		852	req_destroy (aio_req req)
542	{	853	{
543	if (req->self)	854	if (req->self)
544	{	855	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	856	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	857	SvREFCNT_dec (req->self);
547	}	858	}
548		859
549	SvREFCNT_dec (req->sv1);	860	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	861	SvREFCNT_dec (req->sv2);
		862	SvREFCNT_dec (req->sv3);
		863	SvREFCNT_dec (req->sv4);
551	SvREFCNT_dec (req->callback);	864	SvREFCNT_dec (req->callback);
552		865
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	866	free (req);
557	}	867	}
558		868
		869	static void
559	static void req_cancel_subs (aio_req grp)	870	req_cancel_subs (aio_req grp)
560	{	871	{
561	aio_req sub;
562
563	if (grp->type != REQ_GROUP)	872	if (grp->type != EIO_GROUP)
564	return;	873	return;
565		874
566	SvREFCNT_dec (grp->sv2);	875	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	876	grp->sv2 = 0;
568		877
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	878	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	879	}
572		880
573	static void req_cancel (aio_req req)	881	static void ecb_cold
		882	create_respipe (void)
574	{	883	{
575	req->flags |= FLAG_CANCELLED;	884	if (s_epipe_renew (&respipe))
576		885	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	886	}
579		887
580	static void *aio_proc(void *arg);	888	static void
581		889	poll_wait (void)
582	static void start_thread (void)
583	{	890	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()
676	{
677	fd_set rfd;
678
679	while (nreqs)	891	while (eio_nreqs ())
680	{	892	{
681	int size;	893	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	894
		895	X_LOCK (EIO_POOL->reslock);
683	size = res_queue.size;	896	size = EIO_POOL->res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	897	X_UNLOCK (EIO_POOL->reslock);
685		898
686	if (size)	899	if (size)
687	return;	900	return;
688		901
689	maybe_start_thread ();	902	etp_maybe_start_thread (EIO_POOL);
690		903
691	FD_ZERO(&rfd);	904	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	905	}
696	}	906	}
697		907
698	static int poll_cb ()	908	static int
		909	poll_cb (void)
699	{	910	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	911	for (;;)
713	{	912	{
714	for (;;)	913	int res = eio_poll ();
		914
		915	if (res > 0)
		916	croak (0);
		917
		918	if (!max_outstanding || max_outstanding > eio_nreqs ())
		919	return res;
		920
		921	poll_wait ();
		922	}
		923	}
		924
		925	static void ecb_cold
		926	reinit (void)
		927	{
		928	create_respipe ();
		929
		930	if (eio_init (want_poll, done_poll) < 0)
		931	croak ("IO::AIO: unable to initialise eio library");
		932	}
		933
		934	/*****************************************************************************/
		935
		936	static SV *
		937	get_cb (SV *cb_sv)
		938	{
		939	SvGETMAGIC (cb_sv);
		940	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		941	}
		942
		943	static aio_req ecb_noinline
		944	dreq (SV *callback)
		945	{
		946	SV *cb_cv;
		947	aio_req req;
		948	int req_pri = next_pri;
		949	next_pri = EIO_PRI_DEFAULT;
		950
		951	cb_cv = get_cb (callback);
		952
		953	req = calloc (sizeof (*req), 1);
		954	if (!req)
		955	croak ("out of memory during eio_req allocation");
		956
		957	req->callback = SvREFCNT_inc (cb_cv);
		958	req->pri = req_pri;
		959
		960	return req;
		961	}
		962
		963	#define dREQ \
		964	aio_req req = dreq (callback); \
		965
		966	#define REQ_SEND \
		967	PUTBACK; \
		968	req_submit (req); \
		969	SPAGAIN; \
		970	\
		971	if (GIMME_V != G_VOID) \
		972	XPUSHs (req_sv (req, aio_req_stash));
		973
		974	ecb_inline void
		975	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		976	{
		977	if (expect_false (SvROK (path)))
		978	{
		979	SV *rv = SvRV (path);
		980	SV *wdob;
		981
		982	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715	{	983	{
716	maybe_start_thread ();	984	path = AvARRAY (rv)[1];
		985	wdob = AvARRAY (rv)[0];
717		986
718	LOCK (reslock);	987	if (SvOK (wdob))
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{	988	{
723	--npending;	989	*wd = SvAIO_WD (wdob);
724		990	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}	991	}
746	else	992	else
747	{	993	*wd = EIO_INVALID_WD;
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);
753	}
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}	994	}
		995	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		996	{
		997	*wd = (aio_wd)(long)SvIVX (rv);
		998	*wdsv = SvREFCNT_inc_NN (rv);
		999	*ptr = ".";
		1000	return; /* path set to "." */
		1001	}
		1002	else
		1003	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		1004	}
771		1005
772	if (nreqs <= max_outstanding)	1006	*pathsv = newSVsv (path);
		1007	*ptr = SvPVbyte_nolen (*pathsv);
		1008	}
		1009
		1010	static void ecb_noinline
		1011	req_set_path1 (aio_req req, SV *path)
		1012	{
		1013	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		1014	}
		1015
		1016	static void ecb_noinline
		1017	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		1018	{
		1019	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		1020
		1021	switch (SvTYPE (rv))
		1022	{
		1023	case SVt_PVIO:
		1024	case SVt_PVLV:
		1025	case SVt_PVGV:
		1026	req->type = type_fh;
		1027	req->sv1 = newSVsv (fh_or_path);
		1028	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773	break;	1029	break;
774		1030
775	poll_wait ();	1031	default:
776		1032	req->type = type_path;
777	++maxreqs;	1033	req_set_path1 (req, fh_or_path);
		1034	break;
778	}	1035	}
779
780	unblock_sig ();
781	return count;
782	}
783
784	static void create_pipe ()
785	{
786	if (pipe (respipe))
787	croak ("unable to initialize result pipe");
788
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}	1036	}
795		1037
796	/*****************************************************************************/	1038	/*****************************************************************************/
797	/* work around various missing functions */
798		1039
799	#if !HAVE_PREADWRITE	1040	static void
800	# define pread aio_pread	1041	ts_set (struct timespec *ts, NV value)
801	# define pwrite aio_pwrite
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{	1042	{
812	ssize_t res;	1043	ts->tv_sec = value;
813	off_t ooffset;	1044	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}	1045	}
824		1046
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1047	static NV
		1048	ts_get (const struct timespec *ts)
826	{	1049	{
827	ssize_t res;	1050	return ts->tv_sec + ts->tv_nsec * 1e-9;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}	1051	}
839	#endif
840		1052
841	#ifndef HAVE_FUTIMES	1053	/*****************************************************************************/
842		1054
843	# define utimes(path,times) aio_utimes (path, times)	1055	XS(boot_IO__AIO) ecb_cold;
844	# define futimes(fd,times) aio_futimes (fd, times)
845		1056
846	int aio_utimes (const char *filename, const struct timeval times[2])	1057	MODULE = IO::AIO PACKAGE = IO::AIO
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851		1058
852	buf.actime = times[0].tv_sec;	1059	PROTOTYPES: ENABLE
853	buf.modtime = times[1].tv_sec;
854		1060
855	return utime (filename, &buf);	1061	BOOT:
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{	1062	{
863	errno = ENOSYS;	1063	static const struct {
864	return -1;	1064	const char *name;
865	}	1065	IV iv;
		1066	} *civ, const_iv[] = {
		1067	# define const_niv(name, value) { # name, (IV) value },
		1068	# define const_iv(name) { # name, (IV) name },
		1069	# define const_eio(name) { # name, (IV) EIO_ ## name },
866		1070
867	#endif	1071	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1072	/* the first block can be undef if missing */
		1073	const_iv (ENOSYS)
		1074	const_iv (EXDEV)
		1075	const_iv (EBADR)
868		1076
869	#if !HAVE_FDATASYNC	1077	/* for lseek */
870	# define fdatasync fsync	1078	const_iv (SEEK_DATA)
871	#endif	1079	const_iv (SEEK_HOLE)
872		1080
873	#if !HAVE_READAHEAD	1081	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	1082	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1083	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1084	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1085	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1086	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
875		1087
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	1088	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
877	{	1089	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
878	dBUF;	1090	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1091	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1092	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
879		1093
880	while (count > 0)	1094	/* the second block will be 0 when missing */
881	{	1095	const_iv (O_ACCMODE)
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883		1096
884	pread (fd, aio_buf, len, offset);	1097	const_iv (O_RDONLY)
885	offset += len;	1098	const_iv (O_WRONLY)
886	count -= len;	1099	const_iv (O_RDWR)
887	}	1100	const_iv (O_CREAT)
		1101	const_iv (O_TRUNC)
		1102	const_iv (O_EXCL)
		1103	const_iv (O_APPEND)
888		1104
889	errno = 0;	1105	const_iv (O_ASYNC)
890	}	1106	const_iv (O_DIRECT)
		1107	const_iv (O_NOATIME)
891		1108
892	#endif	1109	const_iv (O_CLOEXEC)
		1110	const_iv (O_NOCTTY)
		1111	const_iv (O_NOFOLLOW)
		1112	const_iv (O_NONBLOCK)
		1113	const_iv (O_EXEC)
		1114	const_iv (O_SEARCH)
		1115	const_iv (O_DIRECTORY)
		1116	const_iv (O_DSYNC)
		1117	const_iv (O_RSYNC)
		1118	const_iv (O_SYNC)
		1119	const_iv (O_PATH)
		1120	const_iv (O_TMPFILE)
		1121	const_iv (O_TTY_INIT)
893		1122
894	#if !HAVE_READDIR_R	1123	const_iv (S_IFIFO)
895	# define readdir_r aio_readdir_r	1124	const_iv (S_IFCHR)
		1125	const_iv (S_IFBLK)
		1126	const_iv (S_IFLNK)
		1127	const_iv (S_IFREG)
		1128	const_iv (S_IFDIR)
		1129	const_iv (S_IFWHT)
		1130	const_iv (S_IFSOCK)
		1131	const_iv (S_IFMT)
896		1132
897	static mutex_t readdirlock = MUTEX_INIT;	1133	const_iv (ST_RDONLY)
898		1134	const_iv (ST_NOSUID)
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1135	const_iv (ST_NODEV)
900	{	1136	const_iv (ST_NOEXEC)
901	struct dirent *e;	1137	const_iv (ST_SYNCHRONOUS)
902	int errorno;	1138	const_iv (ST_MANDLOCK)
		1139	const_iv (ST_WRITE)
		1140	const_iv (ST_APPEND)
		1141	const_iv (ST_IMMUTABLE)
		1142	const_iv (ST_NOATIME)
		1143	const_iv (ST_NODIRATIME)
		1144	const_iv (ST_RELATIME)
903		1145
904	LOCK (readdirlock);	1146	const_iv (PROT_NONE)
		1147	const_iv (PROT_EXEC)
		1148	const_iv (PROT_READ)
		1149	const_iv (PROT_WRITE)
905		1150
906	e = readdir (dirp);	1151	const_iv (MAP_PRIVATE)
907	errorno = errno;	1152	const_iv (MAP_SHARED)
		1153	const_iv (MAP_FIXED)
		1154	const_iv (MAP_ANONYMOUS)
908		1155
909	if (e)	1156	/* linuxish */
910	{	1157	const_iv (MAP_LOCKED)
911	*res = ent;	1158	const_iv (MAP_NORESERVE)
912	strcpy (ent->d_name, e->d_name);	1159	const_iv (MAP_POPULATE)
913	}	1160	const_iv (MAP_NONBLOCK)
914	else	1161	const_iv (MAP_GROWSDOWN)
915	*res = 0;	1162	const_iv (MAP_32BIT)
		1163	const_iv (MAP_HUGETLB)
		1164	const_iv (MAP_STACK)
916		1165
917	UNLOCK (readdirlock);	1166	const_iv (MREMAP_MAYMOVE)
		1167	const_iv (MREMAP_FIXED)
918		1168
919	errno = errorno;	1169	const_iv (F_DUPFD_CLOEXEC)
920	return e ? 0 : -1;
921	}
922	#endif
923		1170
924	/* sendfile always needs emulation */	1171	const_iv (MSG_CMSG_CLOEXEC)
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)	1172	const_iv (SOCK_CLOEXEC)
926	{
927	ssize_t res;
928		1173
929	if (!count)	1174	const_iv (F_OFD_GETLK)
930	return 0;	1175	const_iv (F_OFD_SETLK)
		1176	const_iv (F_OFD_GETLKW)
931		1177
932	#if HAVE_SENDFILE	1178	const_iv (FIFREEZE)
933	# if __linux	1179	const_iv (FITHAW)
934	res = sendfile (ofd, ifd, &offset, count);	1180	const_iv (FITRIM)
		1181	const_iv (FICLONE)
		1182	const_iv (FICLONERANGE)
		1183	const_iv (FIDEDUPERANGE)
935		1184
936	# elif __freebsd	1185	const_iv (FS_IOC_GETFLAGS)
937	/*	1186	const_iv (FS_IOC_SETFLAGS)
938	* Of course, the freebsd sendfile is a dire hack with no thoughts	1187	const_iv (FS_IOC_GETVERSION)
939	* wasted on making it similar to other I/O functions.	1188	const_iv (FS_IOC_SETVERSION)
940	*/	1189	const_iv (FS_IOC_FIEMAP)
		1190	const_iv (FS_IOC_FSGETXATTR)
		1191	const_iv (FS_IOC_FSSETXATTR)
		1192	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1193	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1194	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1195
		1196	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1197
		1198	const_iv (FS_SECRM_FL)
		1199	const_iv (FS_UNRM_FL)
		1200	const_iv (FS_COMPR_FL)
		1201	const_iv (FS_SYNC_FL)
		1202	const_iv (FS_IMMUTABLE_FL)
		1203	const_iv (FS_APPEND_FL)
		1204	const_iv (FS_NODUMP_FL)
		1205	const_iv (FS_NOATIME_FL)
		1206	const_iv (FS_DIRTY_FL)
		1207	const_iv (FS_COMPRBLK_FL)
		1208	const_iv (FS_NOCOMP_FL)
		1209	const_iv (FS_ENCRYPT_FL)
		1210	const_iv (FS_BTREE_FL)
		1211	const_iv (FS_INDEX_FL)
		1212	const_iv (FS_JOURNAL_DATA_FL)
		1213	const_iv (FS_NOTAIL_FL)
		1214	const_iv (FS_DIRSYNC_FL)
		1215	const_iv (FS_TOPDIR_FL)
		1216	const_iv (FS_FL_USER_MODIFIABLE)
		1217
		1218	const_iv (FS_XFLAG_REALTIME)
		1219	const_iv (FS_XFLAG_PREALLOC)
		1220	const_iv (FS_XFLAG_IMMUTABLE)
		1221	const_iv (FS_XFLAG_APPEND)
		1222	const_iv (FS_XFLAG_SYNC)
		1223	const_iv (FS_XFLAG_NOATIME)
		1224	const_iv (FS_XFLAG_NODUMP)
		1225	const_iv (FS_XFLAG_RTINHERIT)
		1226	const_iv (FS_XFLAG_PROJINHERIT)
		1227	const_iv (FS_XFLAG_NOSYMLINKS)
		1228	const_iv (FS_XFLAG_EXTSIZE)
		1229	const_iv (FS_XFLAG_EXTSZINHERIT)
		1230	const_iv (FS_XFLAG_NODEFRAG)
		1231	const_iv (FS_XFLAG_FILESTREAM)
		1232	const_iv (FS_XFLAG_DAX)
		1233	const_iv (FS_XFLAG_HASATTR)
		1234
		1235	const_iv (FIEMAP_FLAG_SYNC)
		1236	const_iv (FIEMAP_FLAG_XATTR)
		1237	const_iv (FIEMAP_FLAGS_COMPAT)
		1238	const_iv (FIEMAP_EXTENT_LAST)
		1239	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1240	const_iv (FIEMAP_EXTENT_DELALLOC)
		1241	const_iv (FIEMAP_EXTENT_ENCODED)
		1242	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1243	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1244	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1245	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1246	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1247	const_iv (FIEMAP_EXTENT_MERGED)
		1248	const_iv (FIEMAP_EXTENT_SHARED)
		1249
		1250	const_iv (SPLICE_F_MOVE)
		1251	const_iv (SPLICE_F_NONBLOCK)
		1252	const_iv (SPLICE_F_MORE)
		1253	const_iv (SPLICE_F_GIFT)
		1254
		1255	const_iv (EFD_CLOEXEC)
		1256	const_iv (EFD_NONBLOCK)
		1257	const_iv (EFD_SEMAPHORE)
		1258
		1259	const_iv (CLOCK_REALTIME)
		1260	const_iv (CLOCK_MONOTONIC)
		1261	const_iv (CLOCK_BOOTTIME)
		1262	const_iv (CLOCK_REALTIME_ALARM)
		1263	const_iv (CLOCK_BOOTTIME_ALARM)
		1264
		1265	const_iv (TFD_NONBLOCK)
		1266	const_iv (TFD_CLOEXEC)
		1267
		1268	const_iv (TFD_TIMER_ABSTIME)
		1269	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1270
		1271	/* these are libeio constants, and are independent of gendef0 */
		1272	const_eio (SEEK_SET)
		1273	const_eio (SEEK_CUR)
		1274	const_eio (SEEK_END)
		1275
		1276	const_eio (MCL_FUTURE)
		1277	const_eio (MCL_CURRENT)
		1278	const_eio (MCL_ONFAULT)
		1279
		1280	const_eio (MS_ASYNC)
		1281	const_eio (MS_INVALIDATE)
		1282	const_eio (MS_SYNC)
		1283
		1284	const_eio (MT_MODIFY)
		1285
		1286	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1287	const_eio (SYNC_FILE_RANGE_WRITE)
		1288	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1289
		1290	const_eio (FALLOC_FL_KEEP_SIZE)
		1291	const_eio (FALLOC_FL_PUNCH_HOLE)
		1292	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1293	const_eio (FALLOC_FL_ZERO_RANGE)
		1294	const_eio (FALLOC_FL_INSERT_RANGE)
		1295	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1296
		1297	const_eio (RENAME_NOREPLACE)
		1298	const_eio (RENAME_EXCHANGE)
		1299	const_eio (RENAME_WHITEOUT)
		1300
		1301	const_eio (READDIR_DENTS)
		1302	const_eio (READDIR_DIRS_FIRST)
		1303	const_eio (READDIR_STAT_ORDER)
		1304	const_eio (READDIR_FOUND_UNKNOWN)
		1305
		1306	const_eio (DT_UNKNOWN)
		1307	const_eio (DT_FIFO)
		1308	const_eio (DT_CHR)
		1309	const_eio (DT_DIR)
		1310	const_eio (DT_BLK)
		1311	const_eio (DT_REG)
		1312	const_eio (DT_LNK)
		1313	const_eio (DT_SOCK)
		1314	const_eio (DT_WHT)
		1315	};
		1316
		1317	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1318	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1319	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1320	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		1321
		1322	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1323	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1324
		1325	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1326
		1327	/* allocate dummy pipe fd for aio_close */
941	{	1328	{
942	off_t sbytes;	1329	int pipefd [2];
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944		1330
945	if (res < 0 && sbytes)	1331	if (
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */	1332	#ifdef _WIN32
947	res = sbytes;	1333	_pipe (pipefd, 1, _O_BINARY) < 0
		1334	#else
		1335	pipe (pipefd) < 0
		1336	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1337	#endif
		1338	|| close (pipefd [1]) < 0
		1339	)
		1340	croak ("IO::AIO: unable to create dummy pipe for aio_close");
		1341
		1342	close_fd = pipefd [0];
948	}	1343	}
949		1344
950	# elif __hpux	1345	reinit ();
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974
975	if (res < 0
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
977	#if __solaris
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
979	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985
986	res = 0;
987
988	while (count)
989	{
990	ssize_t cnt;
991
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
993
994	if (cnt <= 0)
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999
1000	cnt = write (ofd, aio_buf, cnt);
1001
1002	if (cnt <= 0)
1003	{
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007
1008	offset += cnt;
1009	res += cnt;
1010	count -= cnt;
1011	}
1012	}
1013
1014	return res;
1015	}	1346	}
1016		1347
1017	/* read a full directory */
1018	static void scandir_ (aio_req req, worker *self)
1019	{
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078
1079	/*****************************************************************************/
1080
1081	static void *aio_proc (void *thr_arg)
1082	{
1083	aio_req req;
1084	struct timespec ts;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}
1303
1304	#define dREQ \
1305	aio_req req; \
1306	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \
1308	\
1309	if (SvOK (callback) && !SvROK (callback)) \
1310	croak ("callback must be undef or of reference type"); \
1311	\
1312	Newz (0, req, 1, aio_cb); \
1313	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \
1315	\
1316	req->callback = newSVsv (callback); \
1317	req->pri = req_pri
1318
1319	#define REQ_SEND \
1320	req_send (req); \
1321	\
1322	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1324
1325	MODULE = IO::AIO PACKAGE = IO::AIO
1326
1327	PROTOTYPES: ENABLE
1328
1329	BOOT:
1330	{
1331	HV *stash = gv_stashpv ("IO::AIO", 1);
1332
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340
1341	create_pipe ();
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1343	}
1344
1345	void	1348	void
		1349	reinit ()
		1350	PROTOTYPE:
		1351
		1352	void
1346	max_poll_reqs (int nreqs)	1353	max_poll_reqs (unsigned int nreqs)
1347	PROTOTYPE: $	1354	PROTOTYPE: $
1348	CODE:	1355	CODE:
1349	max_poll_reqs = nreqs;	1356	eio_set_max_poll_reqs (nreqs);
1350		1357
1351	void	1358	void
1352	max_poll_time (double nseconds)	1359	max_poll_time (double nseconds)
1353	PROTOTYPE: $	1360	PROTOTYPE: $
1354	CODE:	1361	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	1362	eio_set_max_poll_time (nseconds);
1356		1363
1357	void	1364	void
1358	min_parallel (int nthreads)	1365	min_parallel (unsigned int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_parallel (int nthreads)
1363	PROTOTYPE: $
1364
1365	void
1366	max_idle (int nthreads)
1367	PROTOTYPE: $	1366	PROTOTYPE: $
1368	CODE:	1367	CODE:
1369	set_max_idle (nthreads);	1368	eio_set_min_parallel (nthreads);
1370		1369
1371	int	1370	void
1372	max_outstanding (int maxreqs)	1371	max_parallel (unsigned int nthreads)
1373	PROTOTYPE: $	1372	PROTOTYPE: $
1374	CODE:	1373	CODE:
1375	RETVAL = max_outstanding;	1374	eio_set_max_parallel (nthreads);
		1375
		1376	void
		1377	max_idle (unsigned int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	eio_set_max_idle (nthreads);
		1381
		1382	void
		1383	idle_timeout (unsigned int seconds)
		1384	PROTOTYPE: $
		1385	CODE:
		1386	eio_set_idle_timeout (seconds);
		1387
		1388	void
		1389	max_outstanding (unsigned int maxreqs)
		1390	PROTOTYPE: $
		1391	CODE:
1376	max_outstanding = maxreqs;	1392	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		1393
1380	void	1394	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1395	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1382	PROTOTYPE: $$$;$
1383	PPCODE:	1396	PPCODE:
1384	{	1397	{
1385	dREQ;	1398	dREQ;
1386		1399
		1400	req->type = EIO_WD_OPEN;
		1401	req_set_path1 (req, pathname);
		1402
		1403	REQ_SEND;
		1404	}
		1405
		1406	void
		1407	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1408	PPCODE:
		1409	{
		1410	dREQ;
		1411
1387	req->type = REQ_OPEN;	1412	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	1413	req_set_path1 (req, pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	1414	req->int1 = flags;
1391	req->mode = mode;	1415	req->int2 = mode;
1392		1416
1393	REQ_SEND;	1417	REQ_SEND;
1394	}	1418	}
1395		1419
1396	void	1420	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1421	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1398	PROTOTYPE: $;$
1399	ALIAS:	1422	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	1423	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	1424	aio_fdatasync = EIO_FDATASYNC
		1425	aio_syncfs = EIO_SYNCFS
1403	PPCODE:	1426	PPCODE:
1404	{	1427	{
		1428	int fd = s_fileno_croak (fh, 0);
1405	dREQ;	1429	dREQ;
1406		1430
1407	req->type = ix;	1431	req->type = ix;
1408	req->sv1 = newSVsv (fh);	1432	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1433	req->int1 = fd;
1410		1434
1411	REQ_SEND (req);	1435	REQ_SEND;
1412	}	1436	}
1413		1437
1414	void	1438	void
		1439	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1440	PPCODE:
		1441	{
		1442	int fd = s_fileno_croak (fh, 0);
		1443	dREQ;
		1444
		1445	req->type = EIO_SYNC_FILE_RANGE;
		1446	req->sv1 = newSVsv (fh);
		1447	req->int1 = fd;
		1448	req->offs = offset;
		1449	req->size = nbytes;
		1450	req->int2 = flags;
		1451
		1452	REQ_SEND;
		1453	}
		1454
		1455	void
		1456	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1457	PPCODE:
		1458	{
		1459	int fd = s_fileno_croak (fh, 0);
		1460	dREQ;
		1461
		1462	req->type = EIO_FALLOCATE;
		1463	req->sv1 = newSVsv (fh);
		1464	req->int1 = fd;
		1465	req->int2 = mode;
		1466	req->offs = offset;
		1467	req->size = len;
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
		1473	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1474	PPCODE:
		1475	{
		1476	int fd = s_fileno_croak (fh, 0);
		1477	dREQ;
		1478
		1479	req->type = EIO_DUP2;
		1480	req->int1 = close_fd;
		1481	req->sv2 = newSVsv (fh);
		1482	req->int2 = fd;
		1483
		1484	REQ_SEND;
		1485	}
		1486
		1487	void
		1488	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1489	PPCODE:
		1490	{
		1491	int fd = s_fileno_croak (fh, 0);
		1492	dREQ;
		1493
		1494	req->type = EIO_SEEK;
		1495	req->sv1 = newSVsv (fh);
		1496	req->int1 = fd;
		1497	req->offs = SvVAL64 (offset);
		1498	req->int2 = whence;
		1499
		1500	REQ_SEND;
		1501	}
		1502
		1503	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	1504	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1416	ALIAS:	1505	ALIAS:
1417	aio_read = REQ_READ	1506	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	1507	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$
1420	PPCODE:	1508	PPCODE:
1421	{	1509	{
1422	STRLEN svlen;	1510	STRLEN svlen;
		1511	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	1512	char *svptr = SvPVbyte (data, svlen);
1424		1513	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		1514
1428	if (dataoffset < 0)	1515	if (dataoffset < 0)
1429	dataoffset += svlen;	1516	dataoffset += svlen;
1430		1517
1431	if (dataoffset < 0 || dataoffset > svlen)	1518	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	1519	croak ("dataoffset outside of data scalar");
1433		1520
1434	if (ix == REQ_WRITE)	1521	if (ix == EIO_WRITE)
1435	{	1522	{
1436	/* write: check length and adjust. */	1523	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	1524	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	1525	len = svlen - dataoffset;
1439	}	1526	}
1440	else	1527	else
1441	{	1528	{
1442	/* read: grow scalar as necessary */	1529	/* read: check type and grow scalar as necessary */
		1530	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1443	svptr = SvGROW (data, length + dataoffset + 1);	1531	svptr = sv_grow (data, len + dataoffset + 1);
		1532	else if (SvCUR (data) < len + dataoffset)
		1533	croak ("length + dataoffset outside of scalar, and cannot grow");
1444	}	1534	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		1535
1449	{	1536	{
1450	dREQ;	1537	dREQ;
1451		1538
1452	req->type = ix;	1539	req->type = ix;
1453	req->sv1 = newSVsv (fh);	1540	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1541	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	1542	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	1543	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	1544	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	1545	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	1546	req->stroffset = dataoffset;
1461		1547
1462	if (!SvREADONLY (data))	1548	if (!SvREADONLY (data))
1463	{	1549	{
1464	SvREADONLY_on (data);	1550	SvREADONLY_on (data);
…		…
1468	REQ_SEND;	1554	REQ_SEND;
1469	}	1555	}
1470	}	1556	}
1471		1557
1472	void	1558	void
1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1559	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1474	PROTOTYPE: $$;$	1560	ALIAS:
		1561	aio_ioctl = EIO_IOCTL
		1562	aio_fcntl = EIO_FCNTL
1475	PPCODE:	1563	PPCODE:
1476	{	1564	{
1477	SV *data;	1565	int fd = s_fileno_croak (fh, 0);
		1566	char *svptr;
		1567
		1568	if (SvPOK (arg) || !SvNIOK (arg))
		1569	{
		1570	STRLEN svlen;
		1571	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1572	#ifdef IOCPARM_LEN
		1573	STRLEN need = IOCPARM_LEN (request);
		1574	#else
		1575	STRLEN need = 256;
		1576	#endif
		1577
		1578	if (svlen < need)
		1579	svptr = SvGROW (arg, need);
		1580	}
		1581	else
		1582	svptr = (char *)SvIV (arg);
		1583
		1584	{
		1585	dREQ;
		1586
		1587	req->type = ix;
		1588	req->sv1 = newSVsv (fh);
		1589	req->int1 = fd;
		1590	req->int2 = (long)request;
		1591	req->sv2 = SvREFCNT_inc (arg);
		1592	req->ptr2 = svptr;
		1593
		1594	REQ_SEND;
		1595	}
		1596	}
		1597
		1598	void
		1599	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1600	ALIAS:
		1601	aio_readlink = EIO_READLINK
		1602	aio_realpath = EIO_REALPATH
		1603	PPCODE:
		1604	{
1478	dREQ;	1605	dREQ;
1479		1606
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	1607	req->type = ix;
1484	req->sv1 = newSVsv (path);	1608	req_set_path1 (req, pathname);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		1609
1489	REQ_SEND;	1610	REQ_SEND;
1490	}	1611	}
1491		1612
1492	void	1613	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	1614	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1494	PROTOTYPE: $$$$;$
1495	PPCODE:	1615	PPCODE:
1496	{	1616	{
		1617	int ifd = s_fileno_croak (in_fh , 0);
		1618	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	1619	dREQ;
1498		1620
1499	req->type = REQ_SENDFILE;	1621	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	1622	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1623	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	1624	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1625	req->int2 = ifd;
1504	req->offs = in_offset;	1626	req->offs = in_offset;
1505	req->size = length;	1627	req->size = length;
1506		1628
1507	REQ_SEND;	1629	REQ_SEND;
1508	}	1630	}
1509		1631
1510	void	1632	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	1633	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
1512	PROTOTYPE: $$$;$
1513	PPCODE:	1634	PPCODE:
1514	{	1635	{
		1636	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	1637	dREQ;
1516		1638
1517	req->type = REQ_READAHEAD;	1639	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	1640	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1641	req->int1 = fd;
1520	req->offs = offset;	1642	req->offs = offset;
1521	req->size = length;	1643	req->size = length;
1522		1644
1523	REQ_SEND;	1645	REQ_SEND;
1524	}	1646	}
1525		1647
1526	void	1648	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1649	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1528	ALIAS:	1650	ALIAS:
1529	aio_stat = REQ_STAT	1651	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1652	aio_lstat = EIO_LSTAT
		1653	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1654	PPCODE:
1532	{	1655	{
1533	dREQ;	1656	dREQ;
1534		1657
1535	req->ptr2 = malloc (sizeof (Stat_t));	1658	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);
1544
1545	if (SvPOK (fh_or_path))
1546	{
1547	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}
1550	else
1551	{
1552	req->type = REQ_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}
1555		1659
1556	REQ_SEND;	1660	REQ_SEND;
1557	}	1661	}
1558		1662
1559	void	1663	void
		1664	st_xtime ()
		1665	ALIAS:
		1666	st_atime = 0x01
		1667	st_mtime = 0x02
		1668	st_ctime = 0x04
		1669	st_btime = 0x08
		1670	st_xtime = 0x0f
		1671	PPCODE:
		1672	EXTEND (SP, 4);
		1673	if (ix & 0x01) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1674	if (ix & 0x02) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1675	if (ix & 0x04) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1676	if (ix & 0x08) PUSHs (newSVnv (BTIMESEC + 1e-9 * BTIMENSEC));
		1677
		1678	void
		1679	st_xtimensec ()
		1680	ALIAS:
		1681	st_atimensec = 0x01
		1682	st_mtimensec = 0x02
		1683	st_ctimensec = 0x04
		1684	st_btimensec = 0x08
		1685	st_xtimensec = 0x0f
		1686	st_btimesec = 0x10
		1687	st_gen = 0x20
		1688	PPCODE:
		1689	EXTEND (SP, 4);
		1690	if (ix & 0x01) PUSHs (newSViv (ATIMENSEC));
		1691	if (ix & 0x02) PUSHs (newSViv (MTIMENSEC));
		1692	if (ix & 0x04) PUSHs (newSViv (CTIMENSEC));
		1693	if (ix & 0x08) PUSHs (newSViv (BTIMENSEC));
		1694	if (ix & 0x10) PUSHs (newSVuv (BTIMESEC));
		1695	if (ix & 0x20) PUSHs (newSVuv (ST_GEN));
		1696
		1697	UV
		1698	major (UV dev)
		1699	ALIAS:
		1700	minor = 1
		1701	CODE:
		1702	RETVAL = ix ? minor (dev) : major (dev);
		1703	OUTPUT:
		1704	RETVAL
		1705
		1706	UV
		1707	makedev (UV maj, UV min)
		1708	CODE:
		1709	RETVAL = makedev (maj, min);
		1710	OUTPUT:
		1711	RETVAL
		1712
		1713	void
1560	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1714	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1561	PPCODE:	1715	PPCODE:
1562	{	1716	{
1563	dREQ;	1717	dREQ;
1564		1718
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1719	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1720	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1721	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1568
1569	if (SvPOK (fh_or_path))
1570	{
1571	req->type = REQ_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}
1574	else
1575	{
1576	req->type = REQ_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}
1579		1722
1580	REQ_SEND;	1723	REQ_SEND;
1581	}	1724	}
1582		1725
1583	void	1726	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1727	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1585	PPCODE:	1728	PPCODE:
1586	{	1729	{
1587	dREQ;	1730	dREQ;
1588		1731
1589	req->mode = mode;	1732	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1590	req->sv1 = newSVsv (fh_or_path);	1733	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1591
1592	if (SvPOK (fh_or_path))
1593	{
1594	req->type = REQ_CHMOD;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}
1597	else
1598	{
1599	req->type = REQ_FCHMOD;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}
1602		1734
1603	REQ_SEND;	1735	REQ_SEND;
1604	}	1736	}
1605		1737
1606	void	1738	void
		1739	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1740	PPCODE:
		1741	{
		1742	dREQ;
		1743
		1744	req->int2 = mode;
		1745	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1746
		1747	REQ_SEND;
		1748	}
		1749
		1750	void
1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1751	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1608	PPCODE:	1752	PPCODE:
1609	{	1753	{
1610	dREQ;	1754	dREQ;
1611		1755
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1756	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1757	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1758	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1615
1616	if (SvPOK (fh_or_path))
1617	{
1618	req->type = REQ_CHOWN;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}
1621	else
1622	{
1623	req->type = REQ_FCHOWN;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}
1626		1759
1627	REQ_SEND;	1760	REQ_SEND;
1628	}	1761	}
1629		1762
1630	void	1763	void
		1764	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1765	PPCODE:
		1766	{
		1767	dREQ;
		1768
		1769	req->type = EIO_READDIR;
		1770	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1771
		1772	if (flags & EIO_READDIR_DENTS)
		1773	req->int1 |= EIO_READDIR_CUSTOM2;
		1774
		1775	req_set_path1 (req, pathname);
		1776
		1777	REQ_SEND;
		1778	}
		1779
		1780	void
		1781	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1782	PPCODE:
		1783	{
		1784	dREQ;
		1785
		1786	req->type = EIO_MKDIR;
		1787	req->int2 = mode;
		1788	req_set_path1 (req, pathname);
		1789
		1790	REQ_SEND;
		1791	}
		1792
		1793	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1794	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1632	ALIAS:	1795	ALIAS:
1633	aio_unlink = REQ_UNLINK	1796	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1797	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1798	aio_readdir = EIO_READDIR
1636	PPCODE:	1799	PPCODE:
1637	{	1800	{
1638	dREQ;	1801	dREQ;
1639		1802
1640	req->type = ix;	1803	req->type = ix;
1641	req->sv1 = newSVsv (pathname);	1804	req_set_path1 (req, pathname);
1642	req->ptr1 = SvPVbyte_nolen (req->sv1);
1643		1805
1644	REQ_SEND;	1806	REQ_SEND;
1645	}	1807	}
1646		1808
1647	void	1809	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1810	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1811	ALIAS:
		1812	aio_link = EIO_LINK
		1813	aio_symlink = EIO_SYMLINK
		1814	aio_rename = EIO_RENAME
1649	PPCODE:	1815	PPCODE:
1650	{	1816	{
1651	dREQ;	1817	eio_wd wd2 = 0;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:
1664	aio_link = REQ_LINK
1665	aio_symlink = REQ_SYMLINK
1666	aio_rename = REQ_RENAME
1667	PPCODE:
1668	{
1669	dREQ;	1818	dREQ;
1670		1819
1671	req->type = ix;	1820	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);	1821	req_set_path1 (req, oldpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);	1822	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1674	req->sv1 = newSVsv (newpath);	1823	req->int3 = (long)wd2;
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1824
1677	REQ_SEND;	1825	REQ_SEND;
1678	}	1826	}
1679		1827
1680	void	1828	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1829	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1682	PPCODE:	1830	PPCODE:
1683	{	1831	{
		1832	eio_wd wd2 = 0;
1684	dREQ;	1833	dREQ;
1685		1834
1686	req->type = REQ_MKNOD;	1835	req->type = EIO_RENAME;
1687	req->sv1 = newSVsv (pathname);	1836	req_set_path1 (req, oldpath);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);	1837	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1689	req->mode = (mode_t)mode;	1838	req->int2 = flags;
1690	req->offs = dev;	1839	req->int3 = (long)wd2;
1691		1840
1692	REQ_SEND;	1841	REQ_SEND;
1693	}	1842	}
1694		1843
1695	void	1844	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1845	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1697	PPCODE:	1846	PPCODE:
1698	{	1847	{
1699	dREQ;	1848	dREQ;
		1849
		1850	req->type = EIO_MKNOD;
		1851	req->int2 = (mode_t)mode;
		1852	req->offs = dev;
		1853	req_set_path1 (req, pathname);
		1854
		1855	REQ_SEND;
		1856	}
1700		1857
		1858	void
		1859	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1860	ALIAS:
		1861	aio_mtouch = EIO_MTOUCH
		1862	aio_msync = EIO_MSYNC
		1863	PPCODE:
		1864	{
		1865	STRLEN svlen;
		1866	char *svptr = SvPVbyte (data, svlen);
		1867	UV len = SvUV (length);
		1868
		1869	if (flags < 0)
		1870	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1871
		1872	if (offset < 0)
		1873	offset += svlen;
		1874
		1875	if (offset < 0 || offset > svlen)
		1876	croak ("offset outside of scalar");
		1877
		1878	if (!SvOK (length) || len + offset > svlen)
		1879	len = svlen - offset;
		1880
		1881	{
		1882	dREQ;
		1883
		1884	req->type = ix;
		1885	req->sv2 = SvREFCNT_inc (data);
		1886	req->ptr2 = (char *)svptr + offset;
		1887	req->size = len;
		1888	req->int1 = flags;
		1889
		1890	REQ_SEND;
		1891	}
		1892	}
		1893
		1894	void
		1895	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1896	PPCODE:
		1897	{
		1898	STRLEN svlen;
		1899	char *svptr = SvPVbyte (data, svlen);
		1900	UV len = SvUV (length);
		1901
		1902	if (offset < 0)
		1903	offset += svlen;
		1904
		1905	if (offset < 0 || offset > svlen)
		1906	croak ("offset outside of scalar");
		1907
		1908	if (!SvOK (length) || len + offset > svlen)
		1909	len = svlen - offset;
		1910
		1911	{
		1912	dREQ;
		1913
		1914	req->type = EIO_MLOCK;
		1915	req->sv2 = SvREFCNT_inc (data);
		1916	req->ptr2 = (char *)svptr + offset;
		1917	req->size = len;
		1918
		1919	REQ_SEND;
		1920	}
		1921	}
		1922
		1923	void
		1924	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1925	PPCODE:
		1926	{
		1927	dREQ;
		1928
		1929	req->type = EIO_MLOCKALL;
		1930	req->int1 = flags;
		1931
		1932	REQ_SEND;
		1933	}
		1934
		1935	void
		1936	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1937	PPCODE:
		1938	{
		1939	int fd = s_fileno_croak (fh, 0);
		1940	dREQ;
		1941
		1942	req->type = EIO_CUSTOM;
		1943	req->sv1 = newSVsv (fh);
		1944	req->int1 = fd;
		1945
		1946	req->feed = fiemap;
		1947	#if HAVE_FIEMAP
		1948	/* keep our fingers crossed that the next two types are 64 bit */
		1949	req->offs = start;
		1950	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1951	req->int2 = flags;
		1952	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1953	#endif
		1954
		1955	REQ_SEND;
		1956	}
		1957
		1958	void
		1959	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1960	PPCODE:
		1961	{
		1962	char *svptr = 0;
		1963
		1964	sv_clear_foreign (data);
		1965
		1966	if (length) /* known length, directly read into scalar */
		1967	{
		1968	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1969	svptr = sv_grow (data, length + 1);
		1970	else if (SvCUR (data) < length)
		1971	croak ("length outside of scalar, and cannot grow");
		1972	else
		1973	svptr = SvPVbyte_nolen (data);
		1974	}
		1975
		1976	{
		1977	dREQ;
		1978
		1979	req->type = EIO_SLURP;
		1980	req_set_path1 (req, pathname);
		1981	req->offs = offset;
		1982	req->size = length;
		1983	req->sv2 = SvREFCNT_inc (data);
		1984	req->ptr2 = svptr;
		1985
		1986	if (!SvREADONLY (data))
		1987	{
		1988	SvREADONLY_on (data);
		1989	req->flags |= FLAG_SV2_RO_OFF;
		1990	}
		1991
		1992	REQ_SEND;
		1993	}
		1994	}
		1995
		1996	void
		1997	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1998	PPCODE:
		1999	{
		2000	dREQ;
		2001
1701	req->type = REQ_BUSY;	2002	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	2003	req->nv1 = delay < 0. ? 0. : delay;
1703		2004
1704	REQ_SEND;	2005	REQ_SEND;
1705	}	2006	}
1706		2007
1707	void	2008	void
1708	aio_group (SV *callback=&PL_sv_undef)	2009	aio_group (SV *callback = &PL_sv_undef)
1709	PROTOTYPE: ;$
1710	PPCODE:	2010	PPCODE:
1711	{	2011	{
1712	dREQ;	2012	dREQ;
1713		2013
1714	req->type = REQ_GROUP;	2014	req->type = EIO_GROUP;
1715		2015
		2016	PUTBACK;
1716	req_send (req);	2017	req_submit (req);
		2018	SPAGAIN;
		2019
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	2020	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	2021	}
1719		2022
1720	void	2023	void
1721	aio_nop (SV *callback=&PL_sv_undef)	2024	aio_nop (SV *callback = &PL_sv_undef)
		2025	ALIAS:
		2026	aio_nop = EIO_NOP
		2027	aio_sync = EIO_SYNC
1722	PPCODE:	2028	PPCODE:
1723	{	2029	{
1724	dREQ;	2030	dREQ;
1725		2031
1726	req->type = REQ_NOP;	2032	req->type = ix;
1727		2033
1728	REQ_SEND;	2034	REQ_SEND;
1729	}	2035	}
1730		2036
1731	int	2037	int
1732	aioreq_pri (int pri = 0)	2038	aioreq_pri (int pri = NO_INIT)
1733	PROTOTYPE: ;$
1734	CODE:	2039	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	2040	RETVAL = next_pri;
1736	if (items > 0)	2041	if (items > 0)
1737	{	2042	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	2043	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	2044	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	2045	next_pri = pri;
1741	}	2046	}
1742	OUTPUT:	2047	OUTPUT:
1743	RETVAL	2048	RETVAL
1744		2049
1745	void	2050	void
1746	aioreq_nice (int nice = 0)	2051	aioreq_nice (int nice = 0)
1747	CODE:	2052	CODE:
1748	nice = next_pri - nice;	2053	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	2054	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	2055	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	2056	next_pri = nice;
1752		2057
1753	void	2058	void
1754	flush ()	2059	flush ()
1755	PROTOTYPE:
1756	CODE:	2060	CODE:
1757	while (nreqs)	2061	while (eio_nreqs ())
1758	{	2062	{
1759	poll_wait ();	2063	poll_wait ();
1760	poll_cb ();	2064	poll_cb ();
1761	}	2065	}
1762		2066
1763	int	2067	int
1764	poll()	2068	poll ()
1765	PROTOTYPE:
1766	CODE:	2069	CODE:
1767	poll_wait ();	2070	poll_wait ();
1768	RETVAL = poll_cb ();	2071	RETVAL = poll_cb ();
1769	OUTPUT:	2072	OUTPUT:
1770	RETVAL	2073	RETVAL
1771		2074
1772	int	2075	int
1773	poll_fileno()	2076	poll_fileno ()
1774	PROTOTYPE:
1775	CODE:	2077	CODE:
1776	RETVAL = respipe [0];	2078	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	2079	OUTPUT:
1778	RETVAL	2080	RETVAL
1779		2081
1780	int	2082	int
1781	poll_cb(...)	2083	poll_cb (...)
1782	PROTOTYPE:	2084	PROTOTYPE:
1783	CODE:	2085	CODE:
1784	RETVAL = poll_cb ();	2086	RETVAL = poll_cb ();
1785	OUTPUT:	2087	OUTPUT:
1786	RETVAL	2088	RETVAL
1787		2089
1788	void	2090	void
1789	poll_wait()	2091	poll_wait ()
1790	PROTOTYPE:
1791	CODE:	2092	CODE:
1792	poll_wait ();	2093	poll_wait ();
1793		2094
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	2095	int
1832	nreqs()	2096	nreqs ()
1833	PROTOTYPE:
1834	CODE:	2097	CODE:
1835	RETVAL = nreqs;	2098	RETVAL = eio_nreqs ();
1836	OUTPUT:	2099	OUTPUT:
1837	RETVAL	2100	RETVAL
1838		2101
1839	int	2102	int
1840	nready()	2103	nready ()
1841	PROTOTYPE:
1842	CODE:	2104	CODE:
1843	RETVAL = get_nready ();	2105	RETVAL = eio_nready ();
1844	OUTPUT:	2106	OUTPUT:
1845	RETVAL	2107	RETVAL
1846		2108
1847	int	2109	int
1848	npending()	2110	npending ()
1849	PROTOTYPE:
1850	CODE:	2111	CODE:
1851	RETVAL = get_npending ();	2112	RETVAL = eio_npending ();
1852	OUTPUT:	2113	OUTPUT:
1853	RETVAL	2114	RETVAL
1854		2115
1855	int	2116	int
1856	nthreads()	2117	nthreads ()
1857	PROTOTYPE:
1858	CODE:	2118	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	2119	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	2120	OUTPUT:
1863	RETVAL	2121	RETVAL
1864		2122
		2123	int
		2124	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2125	CODE:
		2126	RETVAL = posix_fadvise (fh, offset, length, advice);
		2127	OUTPUT:
		2128	RETVAL
		2129
		2130	IV
		2131	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2132	CODE:
		2133	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2134	OUTPUT:
		2135	RETVAL
		2136
		2137	void
		2138	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2139	PPCODE:
		2140	sv_clear_foreign (scalar);
		2141	{
		2142	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2143	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2144	if (addr == (void *)-1)
		2145	XSRETURN_NO;
		2146
		2147	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2148
		2149	if (!(prot & PROT_WRITE))
		2150	SvREADONLY_on (scalar);
		2151
		2152	XSRETURN_YES;
		2153	}
		2154
		2155	void
		2156	munmap (SV *scalar)
		2157	CODE:
		2158	sv_clear_foreign (scalar);
		2159
		2160	SV *
		2161	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2162	CODE:
		2163	{
		2164	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2165	void *new;
		2166
		2167	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2168	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2169
		2170	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2171
		2172	RETVAL = &PL_sv_no;
		2173
		2174	if (new != (void *)-1)
		2175	{
		2176	RETVAL = new == (void *)mg->mg_ptr
		2177	? newSVpvn ("0 but true", 10)
		2178	: &PL_sv_yes;
		2179
		2180	mg->mg_ptr = (char *)new;
		2181	mg->mg_obj = (SV *)new_length;
		2182
		2183	SvPVX (scalar) = mg->mg_ptr;
		2184	SvCUR_set (scalar, new_length);
		2185	}
		2186	}
		2187	OUTPUT:
		2188	RETVAL
		2189
		2190	int
		2191	madvise (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2192	ALIAS:
		2193	mprotect = 1
		2194	CODE:
		2195	{
		2196	STRLEN svlen;
		2197	void *addr = SvPVbyte (scalar, svlen);
		2198	STRLEN len = SvUV (length);
		2199
		2200	if (offset < 0)
		2201	offset += svlen;
		2202
		2203	if (offset < 0 || offset > svlen)
		2204	croak ("offset outside of scalar");
		2205
		2206	if (!SvOK (length) || len + offset > svlen)
		2207	len = svlen - offset;
		2208
		2209	addr = (void *)(((intptr_t)addr) + offset);
		2210	eio_page_align (&addr, &len);
		2211
		2212	switch (ix)
		2213	{
		2214	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2215	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2216	}
		2217	}
		2218	OUTPUT:
		2219	RETVAL
		2220
		2221	int
		2222	munlock (SV *scalar, IV offset = 0, SV *length = &PL_sv_undef)
		2223	CODE:
		2224	{
		2225	STRLEN svlen;
		2226	void *addr = SvPVbyte (scalar, svlen);
		2227	size_t len = SvUV (length);
		2228
		2229	if (offset < 0)
		2230	offset += svlen;
		2231
		2232	if (offset < 0 || offset > svlen)
		2233	croak ("offset outside of scalar");
		2234
		2235	if (!SvOK (length) || len + offset > svlen)
		2236	len = svlen - offset;
		2237
		2238	addr = (void *)(((intptr_t)addr) + offset);
		2239	eio_page_align (&addr, &len);
		2240	#if _POSIX_MEMLOCK_RANGE
		2241	RETVAL = munlock (addr, len);
		2242	#else
		2243	RETVAL = EIO_ENOSYS ();
		2244	#endif
		2245	}
		2246	OUTPUT:
		2247	RETVAL
		2248
		2249	int
		2250	munlockall ()
		2251	CODE:
		2252	#if _POSIX_MEMLOCK
		2253	munlockall ();
		2254	#else
		2255	RETVAL = EIO_ENOSYS ();
		2256	#endif
		2257	OUTPUT:
		2258	RETVAL
		2259
		2260	int
		2261	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2262	CODE:
		2263	{
		2264	#if HAVE_LINUX_SPLICE
		2265	loff_t off_in_, off_out_;
		2266	RETVAL = splice (
		2267	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2268	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2269	length, flags
		2270	);
		2271	#else
		2272	RETVAL = EIO_ENOSYS ();
		2273	#endif
		2274	}
		2275	OUTPUT:
		2276	RETVAL
		2277
		2278	int
		2279	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2280	CODE:
		2281	#if HAVE_LINUX_SPLICE
		2282	RETVAL = tee (rfh, wfh, length, flags);
		2283	#else
		2284	RETVAL = EIO_ENOSYS ();
		2285	#endif
		2286	OUTPUT:
		2287	RETVAL
		2288
		2289	int
		2290	pipesize (aio_rfd rfh, int new_size = -1)
		2291	PROTOTYPE: $;$
		2292	CODE:
		2293	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2294	if (new_size >= 0)
		2295	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2296	else
		2297	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2298	#else
		2299	errno = ENOSYS;
		2300	RETVAL = -1;
		2301	#endif
		2302	OUTPUT:
		2303	RETVAL
		2304
		2305	void
		2306	pipe2 (int flags = 0)
		2307	PROTOTYPE: ;$
		2308	PPCODE:
		2309	{
		2310	int fd[2];
		2311	int res;
		2312
		2313	if (flags)
		2314	#if HAVE_PIPE2
		2315	res = pipe2 (fd, flags);
		2316	#else
		2317	res = (errno = ENOSYS, -1);
		2318	#endif
		2319	else
		2320	res = pipe (fd);
		2321
		2322	if (!res)
		2323	{
		2324	EXTEND (SP, 2);
		2325	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2326	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2327	}
		2328	}
		2329
		2330	void
		2331	eventfd (unsigned int initval = 0, int flags = 0)
		2332	PPCODE:
		2333	{
		2334	int fd;
		2335	#if HAVE_EVENTFD
		2336	fd = eventfd (initval, flags);
		2337	#else
		2338	fd = (errno = ENOSYS, -1);
		2339	#endif
		2340
		2341	XPUSHs (newmortalFH (fd, O_RDWR));
		2342	}
		2343
		2344	void
		2345	timerfd_create (int clockid, int flags = 0)
		2346	PPCODE:
		2347	{
		2348	int fd;
		2349	#if HAVE_TIMERFD
		2350	fd = timerfd_create (clockid, flags);
		2351	#else
		2352	fd = (errno = ENOSYS, -1);
		2353	#endif
		2354
		2355	XPUSHs (newmortalFH (fd, O_RDWR));
		2356	}
		2357
		2358	void
		2359	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2360	PPCODE:
		2361	{
		2362	int fd = s_fileno_croak (fh, 0);
		2363	#if HAVE_TIMERFD
		2364	int res;
		2365	struct itimerspec its, ots;
		2366
		2367	ts_set (&its.it_interval, interval);
		2368	ts_set (&its.it_value , value);
		2369	res = timerfd_settime (fd, flags, &its, &ots);
		2370
		2371	if (!res)
		2372	{
		2373	EXTEND (SP, 2);
		2374	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2375	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2376	}
		2377	#else
		2378	errno = ENOSYS;
		2379	#endif
		2380	}
		2381
		2382	void
		2383	timerfd_gettime (SV *fh)
		2384	PPCODE:
		2385	{
		2386	int fd = s_fileno_croak (fh, 0);
		2387	#if HAVE_TIMERFD
		2388	int res;
		2389	struct itimerspec ots;
		2390	res = timerfd_gettime (fd, &ots);
		2391
		2392	if (!res)
		2393	{
		2394	EXTEND (SP, 2);
		2395	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2396	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2397	}
		2398	#else
		2399	errno = ENOSYS;
		2400	#endif
		2401	}
		2402
		2403	UV
		2404	get_fdlimit ()
		2405	CODE:
		2406	#if HAVE_RLIMITS
		2407	struct rlimit rl;
		2408	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2409	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2410	#endif
		2411	XSRETURN_UNDEF;
		2412	OUTPUT:
		2413	RETVAL
		2414
		2415	void
		2416	min_fdlimit (UV limit = 0x7fffffffU)
		2417	CODE:
		2418	{
		2419	#if HAVE_RLIMITS
		2420	struct rlimit rl;
		2421	rlim_t orig_rlim_max;
		2422	UV bit;
		2423
		2424	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2425	goto fail;
		2426
		2427	if (rl.rlim_cur == RLIM_INFINITY)
		2428	XSRETURN_YES;
		2429
		2430	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2431
		2432	if (rl.rlim_cur < limit)
		2433	{
		2434	rl.rlim_cur = limit;
		2435
		2436	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2437	rl.rlim_max = rl.rlim_cur;
		2438	}
		2439
		2440	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2441	XSRETURN_YES;
		2442
		2443	if (errno == EPERM)
		2444	{
		2445	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2446	/* our limit overflows a system-wide limit */
		2447	/* try an adaptive algorithm, but do not lower the hardlimit */
		2448	rl.rlim_max = 0;
		2449	for (bit = 0x40000000U; bit; bit >>= 1)
		2450	{
		2451	rl.rlim_max |= bit;
		2452	rl.rlim_cur = rl.rlim_max;
		2453
		2454	/* nevr decrease the hard limit */
		2455	if (rl.rlim_max < orig_rlim_max)
		2456	break;
		2457
		2458	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2459	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2460	}
		2461
		2462	/* now, raise the soft limit to the max permitted */
		2463	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2464	{
		2465	rl.rlim_cur = rl.rlim_max;
		2466	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2467	errno = EPERM;
		2468	}
		2469	}
		2470	#endif
		2471	fail:
		2472	XSRETURN_UNDEF;
		2473	}
		2474
		2475	void _on_next_submit (SV *cb)
		2476	CODE:
		2477	SvREFCNT_dec (on_next_submit);
		2478	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2479
1865	PROTOTYPES: DISABLE	2480	PROTOTYPES: DISABLE
		2481
		2482	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2483
		2484	BOOT:
		2485	{
		2486	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2487	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2488	}
		2489
		2490	void
		2491	DESTROY (SV *self)
		2492	CODE:
		2493	{
		2494	aio_wd wd = SvAIO_WD (self);
		2495	#if HAVE_AT
		2496	{
		2497	SV *callback = &PL_sv_undef;
		2498	dREQ; /* clobbers next_pri :/ */
		2499	next_pri = req->pri; /* restore next_pri */
		2500	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2501	req->type = EIO_WD_CLOSE;
		2502	req->wd = wd;
		2503	REQ_SEND;
		2504	}
		2505	#else
		2506	eio_wd_close_sync (wd);
		2507	#endif
		2508	}
1866		2509
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2510	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		2511
1869	void	2512	void
1870	cancel (aio_req_ornot req)	2513	cancel (aio_req_ornot req)
1871	CODE:	2514	CODE:
1872	req_cancel (req);	2515	eio_cancel (req);
1873		2516
1874	void	2517	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2518	cb (aio_req_ornot req, SV *callback = NO_INIT)
1876	CODE:	2519	PPCODE:
		2520	{
		2521	if (GIMME_V != G_VOID)
		2522	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2523
		2524	if (items > 1)
		2525	{
		2526	SV *cb_cv = get_cb (callback);
		2527
1877	SvREFCNT_dec (req->callback);	2528	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	2529	req->callback = SvREFCNT_inc (cb_cv);
		2530	}
		2531	}
1879		2532
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2533	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		2534
1882	void	2535	void
1883	add (aio_req grp, ...)	2536	add (aio_req grp, ...)
1884	PPCODE:	2537	PPCODE:
1885	{	2538	{
1886	int i;	2539	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		2540
1892	if (grp->int1 == 2)	2541	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2542	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		2543
1895	for (i = 1; i < items; ++i )	2544	for (i = 1; i < items; ++i )
1896	{	2545	{
		2546	aio_req req;
		2547
1897	if (GIMME_V != G_VOID)	2548	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2549	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		2550
1900	req = SvAIO_REQ (ST (i));	2551	req = SvAIO_REQ (ST (i));
1901		2552
1902	if (req)	2553	if (req)
1903	{	2554	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	2555	}
1916	}	2556	}
1917		2557
1918	void	2558	void
1919	cancel_subs (aio_req_ornot req)	2559	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	2568	AV *av;
1929		2569
1930	grp->errorno = errno;	2570	grp->errorno = errno;
1931		2571
1932	av = newAV ();	2572	av = newAV ();
		2573	av_extend (av, items - 1);
1933		2574
1934	for (i = 1; i < items; ++i )	2575	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	2576	av_push (av, newSVsv (ST (i)));
1936		2577
1937	SvREFCNT_dec (grp->sv1);	2578	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	2585	grp->errorno = errorno;
1945		2586
1946	void	2587	void
1947	limit (aio_req grp, int limit)	2588	limit (aio_req grp, int limit)
1948	CODE:	2589	CODE:
1949	grp->int2 = limit;	2590	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		2591
1952	void	2592	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	2593	feed (aio_req grp, SV *callback = &PL_sv_undef)
1954	CODE:	2594	CODE:
1955	{	2595	{
1956	SvREFCNT_dec (grp->sv2);	2596	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	2597	grp->sv2 = newSVsv (callback);
		2598	grp->feed = aio_grp_feed;
1958		2599
1959	if (grp->int2 <= 0)	2600	if (grp->int2 <= 0)
1960	grp->int2 = 2;	2601	grp->int2 = 2;
1961		2602
1962	aio_grp_feed (grp);	2603	eio_grp_limit (grp, grp->int2);
1963	}	2604	}
1964		2605

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