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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.101 by root, Fri Jun 1 13:25:51 2007 UTC vs.
Revision 1.266 by root, Tue Aug 14 14:03:14 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	#if HAVE_SYS_MKDEV_H
		24	# include <sys/mkdev.h>
		25	#elif HAVE_SYS_SYSMACROS_H
		26	# include <sys/sysmacros.h>
		27	#endif
		28
		29	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		30	# include <sys/mman.h>
		31	#endif
		32
		33	/* the incompetent fool that created musl keeps __linux__, refuses
		34	* to implement any linux standard apis, and also has no way to test
		35	* for his broken iplementation. don't complain to me if this fails
		36	* for you.
		37	*/
		38	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		39	# include <linux/fs.h>
		40	# ifdef FS_IOC_FIEMAP
		41	# include <linux/types.h>
		42	# include <linux/fiemap.h>
		43	# define HAVE_FIEMAP 1
		44	# endif
		45	#endif
		46
		47	/* perl namespace pollution */
		48	#undef VERSION
		49
		50	/* perl stupidly overrides readdir and maybe others */
		51	/* with thread-unsafe versions, imagine that :( */
		52	#undef readdir
		53	#undef opendir
		54	#undef closedir
		55
		56	#ifdef _WIN32
		57
		58	// perl overrides all those nice libc functions
		59
		60	#undef malloc
		61	#undef free
		62	#undef open
		63	#undef read
		64	#undef write
		65	#undef send
		66	#undef recv
		67	#undef stat
		68	#undef lstat
		69	#undef fstat
		70	#undef truncate
		71	#undef ftruncate
		72	#undef open
		73	#undef link
		74	#undef close
		75	#undef unlink
		76	#undef mkdir
		77	#undef rmdir
		78	#undef rename
		79	#undef lseek
		80	#undef opendir
		81	#undef readdir
		82	#undef closedir
		83	#undef chmod
		84	#undef fchmod
		85	#undef dup
		86	#undef dup2
		87	#undef abort
		88	#undef pipe
		89
		90	#define EIO_STRUCT_STAT struct _stati64
		91	#define EIO_STRUCT_STATI64
		92
		93	#else
		94
		95	#include <sys/time.h>
		96	#include <sys/select.h>
		97	#include <unistd.h>
23	#include <utime.h>	98	#include <utime.h>
		99	#include <signal.h>
24		100
25	#if HAVE_SENDFILE	101	#define EIO_STRUCT_STAT Stat_t
26	# if __linux	102
		103	#endif
		104
		105	/*****************************************************************************/
		106
		107	#if __GNUC__ >= 3
		108	# define expect(expr,value) __builtin_expect ((expr),(value))
		109	#else
		110	# define expect(expr,value) (expr)
		111	#endif
		112
		113	#define expect_false(expr) expect ((expr) != 0, 0)
		114	#define expect_true(expr) expect ((expr) != 0, 1)
		115
		116	/*****************************************************************************/
		117
		118	#include "config.h"
		119
		120	#if HAVE_ST_XTIMENSEC
		121	# define ATIMENSEC PL_statcache.st_atimensec
		122	# define MTIMENSEC PL_statcache.st_mtimensec
		123	# define CTIMENSEC PL_statcache.st_ctimensec
		124	#elif HAVE_ST_XTIMESPEC
		125	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		126	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		127	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		128	#else
		129	# define ATIMENSEC 0
		130	# define MTIMENSEC 0
		131	# define CTIMENSEC 0
		132	#endif
		133
		134	#include "schmorp.h"
		135
		136	#if HAVE_EVENTFD
27	# include <sys/sendfile.h>	137	# include <sys/eventfd.h>
28	# elif __freebsd	138	#endif
29	# include <sys/socket.h>	139
		140	#if HAVE_TIMERFD
30	# include <sys/uio.h>	141	# include <sys/timerfd.h>
31	# elif __hpux	142	#endif
		143
		144	#if HAVE_RLIMITS
		145	#include <sys/time.h>
32	# include <sys/socket.h>	146	#include <sys/resource.h>
33	# elif __solaris /* not yet */	147	#endif
34	# include <sys/sendfile.h>	148
		149	typedef SV SV8; /* byte-sv, used for argument-checking */
		150	typedef int aio_rfd; /* read file desriptor */
		151	typedef int aio_wfd; /* write file descriptor */
		152
		153	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		154
		155	#define EIO_REQ_MEMBERS \
		156	SV *callback; \
		157	SV *sv1, *sv2; \
		158	SV *sv3, *sv4; \
		159	STRLEN stroffset; \
		160	SV *self;
		161
		162	#define EIO_NO_WRAPPERS 1
		163
		164	#include "libeio/eio.h"
		165
		166	static int req_invoke (eio_req *req);
		167	#define EIO_FINISH(req) req_invoke (req)
		168	static void req_destroy (eio_req *grp);
		169	#define EIO_DESTROY(req) req_destroy (req)
		170
		171	#include "libeio/eio.c"
		172
		173	#if !HAVE_POSIX_FADVISE
		174	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		175	#endif
		176
		177	#if !HAVE_POSIX_MADVISE
		178	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		179	#endif
		180
		181	#ifndef MAP_ANONYMOUS
		182	# ifdef MAP_ANON
		183	# define MAP_ANONYMOUS MAP_ANON
35	# else	184	# else
36	# error sendfile support requested but not available	185	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	186	# endif
38	#endif	187	#endif
39		188
40	/* number of seconds after which idle threads exit */	189	#ifndef makedev
41	#define IDLE_TIMEOUT 10	190	# 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	191	#endif
47		192	#ifndef major
48	/* buffer size for various temporary buffers */	193	# define major(dev) ((dev) >> 8)
49	#define AIO_BUFSIZE 65536
50
51	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8
53	# define SvVAL64 SvIV
54	#else
55	# define SvVAL64 SvNV
56	#endif	194	#endif
		195	#ifndef minor
		196	# define minor(dev) ((dev) & 0xff)
		197	#endif
57		198
58	#define dBUF \	199	/* solaris has a non-posix/unix compliant PAGESIZE that breaks compilation */
59	char *aio_buf; \	200	#ifdef __sun
60	LOCK (wrklock); \	201	# undef PAGESIZE
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	202	#endif
62	UNLOCK (wrklock); \	203
63	if (!aio_buf) \	204	#if PAGESIZE <= 0
		205	# define PAGESIZE sysconf (_SC_PAGESIZE)
		206	#endif
		207
		208	/*****************************************************************************/
		209
		210	#if !_POSIX_MAPPED_FILES
		211	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		212	# define munmap(addr,length) EIO_ENOSYS ()
		213	#endif
		214
		215	#if !_POSIX_MEMORY_PROTECTION
		216	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		217	#endif
		218
		219	#if !MREMAP_MAYMOVE
		220	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		221	#endif
		222
		223	#define FOREIGN_MAGIC PERL_MAGIC_ext
		224
		225	static int ecb_cold
		226	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		227	{
		228	int old_errno = errno;
		229	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		230	errno = old_errno;
		231
		232	mg->mg_obj = 0; /* just in case */
		233
		234	SvREADONLY_off (sv);
		235
		236	if (SvPVX (sv) != mg->mg_ptr)
		237	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		238
		239	SvCUR_set (sv, 0);
		240	SvPVX (sv) = 0;
		241	SvOK_off (sv);
		242
64	return -1;	243	return 0;
		244	}
65		245
66	typedef SV SV8; /* byte-sv, used for argument-checking */	246	static MGVTBL mmap_vtbl = {
67		247	0, 0, 0, 0, mmap_free
68	enum {
69	REQ_QUIT,
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	248	};
84		249
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	250	static int ecb_cold
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	251	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
87
88	typedef struct aio_cb
89	{	252	{
90	struct aio_cb *volatile next;	253	free (mg->mg_ptr);
		254	mg->mg_obj = 0; /* just in case */
91		255
92	SV *callback;	256	SvREADONLY_off (sv);
93	SV *sv1, *sv2;
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99		257
100	STRLEN stroffset;	258	if (SvPVX (sv) != mg->mg_ptr)
101	int type;	259	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		260
106	unsigned char flags;	261	SvCUR_set (sv, 0);
107	unsigned char pri;	262	SvPVX (sv) = 0;
		263	SvOK_off (sv);
108		264
109	SV *self; /* the perl counterpart of this request, if any */	265	return 0;
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	266	}
111	} aio_cb;
112		267
113	enum {	268	static MGVTBL sysfree_vtbl = {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */	269	0, 0, 0, 0, sysfree_free
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};	270	};
118		271
119	typedef aio_cb *aio_req;	272	/*****************************************************************************/
120	typedef aio_cb *aio_req_ornot;
121		273
122	enum {	274	/* helper: set scalar to foreign ptr with custom free */
123	PRI_MIN = -4,	275	static void
124	PRI_MAX = 4,	276	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
125
126	DEFAULT_PRI = 0,
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{	277	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	278	sv_force_normal (sv);
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142		279
143	static thread_t main_tid;	280	/* we store the length in mg_obj, as namlen is I32 :/ */
144	static int main_sig;	281	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
145	static int block_sig_level;	282	->mg_obj = (SV *)length;
146		283
147	void block_sig ()	284	SvUPGRADE (sv, SVt_PV); /* nop... */
148	{
149	sigset_t ss;
150		285
151	if (block_sig_level++)	286	if (SvLEN (sv))
		287	Safefree (SvPVX (sv));
		288
		289	SvPVX (sv) = (char *)addr;
		290	SvCUR_set (sv, length);
		291	SvLEN_set (sv, 0);
		292	SvPOK_only (sv);
		293	}
		294
		295	static void
		296	sv_clear_foreign (SV *sv)
		297	{
		298	/* todo: iterate over magic and only free ours, but of course */
		299	/* the perl5porters will call that (correct) behaviour buggy */
		300	sv_unmagic (sv, FOREIGN_MAGIC);
		301	}
		302
		303	/*****************************************************************************/
		304
		305	/* defines all sorts of constants to 0 unless they are already defined */
		306	/* also provides const_iv_ and const_niv_ macros for them */
		307	#include "def0.h"
		308
		309	/*****************************************************************************/
		310
		311	static void
		312	fiemap (eio_req *req)
		313	{
		314	req->result = -1;
		315
		316	#if HAVE_FIEMAP
		317	/* assume some c99 */
		318	struct fiemap *fiemap = 0;
		319	size_t end_offset;
		320	int count = req->int3;
		321
		322	req->flags |= EIO_FLAG_PTR1_FREE;
		323
		324	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		325	/* increase in 3.5kb steps */
		326	if (count < 0)
		327	count = 8;
		328
		329	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		330	errno = ENOMEM;
		331	if (!fiemap)
152	return;	332	return;
153		333
154	if (!main_sig)	334	req->ptr1 = fiemap;
		335
		336	fiemap->fm_start = req->offs;
		337	fiemap->fm_length = req->size;
		338	fiemap->fm_flags = req->int2;
		339	fiemap->fm_extent_count = count;
		340
		341	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
155	return;	342	return;
156		343
157	sigemptyset (&ss);	344	if (req->int3 >= 0 /* not autosizing */
158	sigaddset (&ss, main_sig);	345	|| !fiemap->fm_mapped_extents /* no more extents */
159	pthread_sigmask (SIG_BLOCK, &ss, 0);	346	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
160	}	347	goto done;
161		348
162	void unblock_sig ()	349	/* else we have to loop -
163	{	350	* it would be tempting (actually I tried that first) to just query the
164	sigset_t ss;	351	* number of extents needed, but linux often feels like not returning all
		352	* extents, without telling us it left any out. this complicates
		353	* this quite a bit.
		354	*/
165		355
166	if (--block_sig_level)	356	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
167	return;
168		357
169	if (!main_sig)	358	for (;;)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{	359	{
202	closedir (wrk->dirp);	360	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
203	wrk->dirp = 0;	361	char scratch[3072];
204	}	362	struct fiemap *incmap = (struct fiemap *)scratch;
205		363
206	if (wrk->dbuf)	364	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
207	{	365	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
208	free (wrk->dbuf);	366	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
209	wrk->dbuf = 0;	367	incmap->fm_flags = fiemap->fm_flags;
210	}	368	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
211	}
212		369
213	static void worker_free (worker *wrk)	370	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;	371	return;
308		372
309	--q->size;	373	if (!incmap->fm_mapped_extents)
		374	goto done;
310		375
311	for (pri = NUM_PRI; pri--; )	376	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
312	{	377	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
313	aio_req req = q->qs[pri];	378	errno = ENOMEM;
314
315	if (req)	379	if (!fiemap)
		380	return;
		381
		382	req->ptr1 = fiemap;
		383
		384	for (count = 0; count < incmap->fm_mapped_extents; ++count)
316	{	385	{
317	if (!(q->qs[pri] = req->next))	386	struct fiemap_extent *e = incmap->fm_extents + count;
318	q->qe[pri] = 0;
319		387
320	return req;	388	if (e->fe_logical + e->fe_length >= end_offset)
		389	goto done;
		390
		391	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		392
		393	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		394	goto done;
		395
321	}	396	}
322	}	397	}
323		398
324	abort ();	399	done:
325	}	400	req->result = 0;
326		401
327	static int poll_cb ();	402	#else
328	static int req_invoke (aio_req req);	403	errno = ENOSYS;
		404	#endif
		405	}
		406
		407	/*****************************************************************************/
		408
		409	enum {
		410	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		411	};
		412
		413	typedef eio_req *aio_req;
		414	typedef eio_req *aio_req_ornot;
		415	typedef eio_wd aio_wd;
		416
		417	static SV *on_next_submit;
		418	static int next_pri = EIO_PRI_DEFAULT;
		419	static int max_outstanding;
		420
		421	static s_epipe respipe;
		422
329	static void req_destroy (aio_req req);	423	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	424	static void req_cancel (aio_req req);
331		425
		426	static void
		427	want_poll (void)
		428	{
		429	/* write a dummy byte to the pipe so fh becomes ready */
		430	s_epipe_signal (&respipe);
		431	}
		432
		433	static void
		434	done_poll (void)
		435	{
		436	/* read any signals sent by the worker threads */
		437	s_epipe_drain (&respipe);
		438	}
		439
332	/* must be called at most once */	440	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	441	static SV *
		442	req_sv (aio_req req, HV *stash)
334	{	443	{
335	if (!req->self)	444	if (!req->self)
336	{	445	{
337	req->self = (SV *)newHV ();	446	req->self = (SV *)newHV ();
338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	447	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339	}	448	}
340		449
341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	450	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342	}	451	}
343		452
344	static aio_req SvAIO_REQ (SV *sv)	453	static SV *
		454	newSVaio_wd (aio_wd wd)
		455	{
		456	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		457	}
		458
		459	static aio_req
		460	SvAIO_REQ (SV *sv)
345	{	461	{
346	MAGIC *mg;	462	MAGIC *mg;
347		463
348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	464	if (!SvROK (sv)
		465	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		466	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		467	&& SvSTASH (SvRV (sv)) != aio_req_stash
		468	&& !sv_derived_from (sv, "IO::AIO::REQ")))
349	croak ("object of class " AIO_REQ_KLASS " expected");	469	croak ("object of class IO::AIO::REQ expected");
350		470
351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	471	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352		472
353	return mg ? (aio_req)mg->mg_ptr : 0;	473	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	474	}
355		475
		476	static aio_wd
		477	SvAIO_WD (SV *sv)
		478	{
		479	if (!SvROK (sv)
		480	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		481	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		482	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		483
		484	return (aio_wd)(long)SvIVX (SvRV (sv));
		485	}
		486
		487	static SV *
		488	newmortalFH (int fd, int flags)
		489	{
		490	if (fd < 0)
		491	return &PL_sv_undef;
		492
		493	GV *gv = (GV *)sv_newmortal ();
		494	char sym[64];
		495	int symlen;
		496
		497	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		498	gv_init (gv, aio_stash, sym, symlen, 0);
		499
		500	symlen = snprintf (
		501	sym,
		502	sizeof (sym),
		503	"%s&=%d",
		504	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		505	fd
		506	);
		507
		508	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		509	? (SV *)gv : &PL_sv_undef;
		510	}
		511
		512	static void
356	static void aio_grp_feed (aio_req grp)	513	aio_grp_feed (aio_req grp)
357	{	514	{
358	block_sig ();	515	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	516	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	517	dSP;
367		518
368	ENTER;	519	ENTER;
369	SAVETMPS;	520	SAVETMPS;
370	PUSHMARK (SP);	521	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	522	XPUSHs (req_sv (grp, aio_grp_stash));
372	PUTBACK;	523	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	524	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	525	SPAGAIN;
375	FREETMPS;	526	FREETMPS;
376	LEAVE;	527	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	528	}
387
388	unblock_sig ();
389	}	529	}
390		530
391	static void aio_grp_dec (aio_req grp)	531	static void
		532	req_submit (eio_req *req)
392	{	533	{
393	--grp->size;	534	eio_submit (req);
394		535
395	/* call feeder, if applicable */	536	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	537	{
401	block_sig ();	538	dSP;
		539	SV *cb = sv_2mortal (on_next_submit);
402		540
403	if (!req_invoke (grp))	541	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		542
410	req_destroy (grp);	543	PUSHMARK (SP);
411	unblock_sig ();	544	PUTBACK;
		545	call_sv (cb, G_DISCARD | G_EVAL);
412	}	546	}
413	}	547	}
414		548
		549	static int
415	static int req_invoke (aio_req req)	550	req_invoke (eio_req *req)
416	{	551	{
417	dSP;
418
419	if (req->flags & FLAG_SV2_RO_OFF)	552	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	553	SvREADONLY_off (req->sv2);
421		554
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	555	if (!EIO_CANCELLED (req) && req->callback)
423	{	556	{
		557	dSP;
		558	static SV *sv_result_cache; /* caches the result integer SV */
		559	SV *sv_result;
		560
424	ENTER;	561	ENTER;
425	SAVETMPS;	562	SAVETMPS;
426	PUSHMARK (SP);	563	PUSHMARK (SP);
427	EXTEND (SP, 1);	564	EXTEND (SP, 1);
428		565
		566	/* do not recreate the result IV from scratch each time */
		567	if (expect_true (sv_result_cache))
		568	{
		569	sv_result = sv_result_cache; sv_result_cache = 0;
		570	SvIV_set (sv_result, req->result);
		571	SvIOK_only (sv_result);
		572	}
		573	else
		574	{
		575	sv_result = newSViv (req->result);
		576	SvREADONLY_on (sv_result);
		577	}
		578
429	switch (req->type)	579	switch (req->type)
430	{	580	{
		581	case EIO_WD_OPEN:
		582	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		583	break;
		584
431	case REQ_READDIR:	585	case EIO_READDIR:
432	{	586	{
433	SV *rv = &PL_sv_undef;	587	SV *rv = &PL_sv_undef;
434		588
435	if (req->result >= 0)	589	if (req->result >= 0)
436	{	590	{
437	int i;	591	int i;
438	char *buf = req->ptr2;	592	char *names = (char *)req->ptr2;
		593	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	594	AV *av = newAV ();
440		595
441	av_extend (av, req->result - 1);	596	av_extend (av, req->result - 1);
442		597
443	for (i = 0; i < req->result; ++i)	598	for (i = 0; i < req->result; ++i)
444	{	599	{
445	SV *sv = newSVpv (buf, 0);	600	if (req->int1 & EIO_READDIR_DENTS)
		601	{
		602	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		603
		604	if (req->int1 & EIO_READDIR_CUSTOM2)
		605	{
		606	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		607	AV *avent = newAV ();
		608
		609	av_extend (avent, 2);
		610
		611	if (!sv_type [ent->type])
		612	{
		613	sv_type [ent->type] = newSViv (ent->type);
		614	SvREADONLY_on (sv_type [ent->type]);
		615	}
		616
		617	av_store (avent, 0, namesv);
		618	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		619	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		620
		621	av_store (av, i, newRV_noinc ((SV *)avent));
		622	}
		623	else
447	av_store (av, i, sv);	624	av_store (av, i, namesv);
		625
		626	++ent;
		627	}
		628	else
		629	{
		630	SV *name = newSVpv (names, 0);
		631	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	632	names += SvCUR (name) + 1;
		633	}
449	}	634	}
450		635
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	636	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	637	}
453		638
454	PUSHs (rv);	639	PUSHs (rv);
		640
		641	if (req->int1 & EIO_READDIR_CUSTOM1)
		642	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	643	}
456	break;	644	break;
457		645
458	case REQ_OPEN:	646	case EIO_OPEN:
		647	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		648	break;
		649
		650	case EIO_STATVFS:
		651	case EIO_FSTATVFS:
459	{	652	{
460	/* convert fd to fh */	653	SV *rv = &PL_sv_undef;
461	SV *fh;	654
		655	#ifndef _WIN32
		656	if (req->result >= 0)
		657	{
		658	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		659	HV *hv = newHV ();
		660	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		661	* chooses to make it a struct.
		662	*/
		663	unsigned long fsid = 0;
		664	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
462		665
463	PUSHs (sv_2mortal (newSViv (req->result)));	666	rv = sv_2mortal (newRV_noinc ((SV *)hv));
464	PUTBACK;
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
466	SPAGAIN;
467		667
468	fh = POPs;	668	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
469	PUSHMARK (SP);	669	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		670	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		671	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		672	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		673	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		674	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		675	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		676	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		677	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		678	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		679	}
		680	#endif
		681
470	XPUSHs (fh);	682	PUSHs (rv);
471	}	683	}
		684
472	break;	685	break;
473		686
474	case REQ_GROUP:	687	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	688	req->int1 = 2; /* mark group as finished */
476		689
477	if (req->sv1)	690	if (req->sv1)
478	{	691	{
479	int i;	692	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	696	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	697	PUSHs (*av_fetch (av, i, 0));
485	}	698	}
486	break;	699	break;
487		700
488	case REQ_NOP:	701	case EIO_NOP:
489	case REQ_BUSY:	702	case EIO_BUSY:
490	break;	703	break;
491		704
492	case REQ_READLINK:	705	case EIO_READLINK:
		706	case EIO_REALPATH:
493	if (req->result > 0)	707	if (req->result > 0)
		708	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		709	break;
		710
		711	case EIO_STAT:
		712	case EIO_LSTAT:
		713	case EIO_FSTAT:
		714	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		715
		716	if (!(PL_laststatval = req->result))
		717	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		718	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		719
		720	PUSHs (sv_result);
		721	break;
		722
		723	case EIO_SEEK:
		724	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		725	break;
		726
		727	case EIO_READ:
		728	{
		729	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		730	*SvEND (req->sv2) = 0;
		731	SvPOK_only (req->sv2);
		732	SvSETMAGIC (req->sv2);
		733	PUSHs (sv_result);
		734	}
		735	break;
		736
		737	case EIO_SLURP:
		738	{
		739	if (req->result >= 0)
		740	{
		741	/* if length was originally not known, we steal the malloc'ed memory */
		742	if (req->flags & EIO_FLAG_PTR2_FREE)
		743	{
		744	req->flags &= ~EIO_FLAG_PTR2_FREE;
		745	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		746	}
		747	else
		748	{
		749	SvCUR_set (req->sv2, req->result);
		750	*SvEND (req->sv2) = 0;
		751	SvPOK_only (req->sv2);
		752	}
		753
		754	SvSETMAGIC (req->sv2);
		755	}
		756
		757	PUSHs (sv_result);
		758	}
		759	break;
		760
		761	case EIO_CUSTOM:
		762	if (req->feed == fiemap)
494	{	763	{
495	SvCUR_set (req->sv2, req->result);	764	#if HAVE_FIEMAP
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);	765	if (!req->result)
		766	{
		767	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		768
		769	if (fiemap->fm_extent_count)
		770	{
		771	AV *av = newAV ();
		772	int i;
		773
		774	while (fiemap->fm_mapped_extents)
		775	{
		776	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		777	AV *ext_av = newAV ();
		778
		779	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		780	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		781	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		782	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		783
		784	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		785	}
		786
		787	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		788	}
		789	else
		790	{
		791	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		792	PUSHs (sv_result);
		793	}
		794	}
		795	#endif
498	}	796	}
		797	else
		798	PUSHs (sv_result);
499	break;	799	break;
500		800
501	case REQ_STAT:	801	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
502	case REQ_LSTAT:	802	if (req->result > 0)
503	case REQ_FSTAT:	803	SvIV_set (sv_result, 0);
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	804	/* FALLTHROUGH */
505	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));
508	break;
509
510	case REQ_READ:
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;
513	PUSHs (sv_2mortal (newSViv (req->result)));
514	break;
515		805
516	default:	806	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	807	PUSHs (sv_result);
518	break;	808	break;
519	}	809	}
520		810
521	errno = req->errorno;	811	errno = req->errorno;
522		812
523	PUTBACK;	813	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	814	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	815	SPAGAIN;
		816
		817	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		818	SvREFCNT_dec (sv_result);
		819	else
		820	sv_result_cache = sv_result;
526		821
527	FREETMPS;	822	FREETMPS;
528	LEAVE;	823	LEAVE;
		824
		825	PUTBACK;
529	}	826	}
530		827
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	828	return !!SvTRUE (ERRSV);
546	}	829	}
547		830
		831	static void
548	static void req_destroy (aio_req req)	832	req_destroy (aio_req req)
549	{	833	{
550	if (req->self)	834	if (req->self)
551	{	835	{
552	sv_unmagic (req->self, PERL_MAGIC_ext);	836	sv_unmagic (req->self, PERL_MAGIC_ext);
553	SvREFCNT_dec (req->self);	837	SvREFCNT_dec (req->self);
554	}	838	}
555		839
556	SvREFCNT_dec (req->sv1);	840	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	841	SvREFCNT_dec (req->sv2);
		842	SvREFCNT_dec (req->sv3);
		843	SvREFCNT_dec (req->sv4);
558	SvREFCNT_dec (req->callback);	844	SvREFCNT_dec (req->callback);
559		845
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	846	free (req);
564	}	847	}
565		848
		849	static void
566	static void req_cancel_subs (aio_req grp)	850	req_cancel_subs (aio_req grp)
567	{	851	{
568	aio_req sub;
569
570	if (grp->type != REQ_GROUP)	852	if (grp->type != EIO_GROUP)
571	return;	853	return;
572		854
573	SvREFCNT_dec (grp->sv2);	855	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	856	grp->sv2 = 0;
575		857
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	858	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	859	}
579		860
580	static void req_cancel (aio_req req)	861	static void ecb_cold
		862	create_respipe (void)
581	{	863	{
582	req->flags |= FLAG_CANCELLED;	864	if (s_epipe_renew (&respipe))
583		865	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	866	}
586		867
587	static void *aio_proc (void *arg);	868	static void
588		869	poll_wait (void)
589	static void start_thread (void)
590	{	870	{
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	LOCK (wrklock);
597
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599	{
600	wrk->prev = &wrk_first;
601	wrk->next = wrk_first.next;
602	wrk_first.next->prev = wrk;
603	wrk_first.next = wrk;
604	++started;
605	}
606	else
607	free (wrk);
608
609	UNLOCK (wrklock);
610	}
611
612	static void maybe_start_thread ()
613	{
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}
623
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()
683	{
684	fd_set rfd;
685
686	while (nreqs)	871	while (eio_nreqs ())
687	{	872	{
688	int size;	873	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	874
		875	X_LOCK (EIO_POOL->reslock);
690	size = res_queue.size;	876	size = EIO_POOL->res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	877	X_UNLOCK (EIO_POOL->reslock);
692		878
693	if (size)	879	if (size)
694	return;	880	return;
695		881
696	maybe_start_thread ();	882	etp_maybe_start_thread (EIO_POOL);
697		883
698	FD_ZERO(&rfd);	884	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	885	}
703	}	886	}
704		887
705	static int poll_cb ()	888	static int
		889	poll_cb (void)
706	{	890	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	block_sig ();
718
719	for (;;)	891	for (;;)
720	{	892	{
721	for (;;)	893	int res = eio_poll ();
		894
		895	if (res > 0)
		896	croak (0);
		897
		898	if (!max_outstanding || max_outstanding > eio_nreqs ())
		899	return res;
		900
		901	poll_wait ();
		902	}
		903	}
		904
		905	static void ecb_cold
		906	reinit (void)
		907	{
		908	create_respipe ();
		909
		910	if (eio_init (want_poll, done_poll) < 0)
		911	croak ("IO::AIO: unable to initialise eio library");
		912	}
		913
		914	/*****************************************************************************/
		915
		916	static SV *
		917	get_cb (SV *cb_sv)
		918	{
		919	SvGETMAGIC (cb_sv);
		920	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		921	}
		922
		923	static aio_req ecb_noinline
		924	dreq (SV *callback)
		925	{
		926	SV *cb_cv;
		927	aio_req req;
		928	int req_pri = next_pri;
		929	next_pri = EIO_PRI_DEFAULT;
		930
		931	cb_cv = get_cb (callback);
		932
		933	req = calloc (sizeof (*req), 1);
		934	if (!req)
		935	croak ("out of memory during eio_req allocation");
		936
		937	req->callback = SvREFCNT_inc (cb_cv);
		938	req->pri = req_pri;
		939
		940	return req;
		941	}
		942
		943	#define dREQ \
		944	aio_req req = dreq (callback); \
		945
		946	#define REQ_SEND \
		947	PUTBACK; \
		948	req_submit (req); \
		949	SPAGAIN; \
		950	\
		951	if (GIMME_V != G_VOID) \
		952	XPUSHs (req_sv (req, aio_req_stash));
		953
		954	ecb_inline void
		955	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		956	{
		957	if (expect_false (SvROK (path)))
		958	{
		959	SV *rv = SvRV (path);
		960	SV *wdob;
		961
		962	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
722	{	963	{
723	maybe_start_thread ();	964	path = AvARRAY (rv)[1];
		965	wdob = AvARRAY (rv)[0];
724		966
725	LOCK (reslock);	967	if (SvOK (wdob))
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{	968	{
730	--npending;	969	*wd = SvAIO_WD (wdob);
731		970	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}	971	}
753	else	972	else
754	{	973	*wd = EIO_INVALID_WD;
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);
760	}
761
762	count++;
763	}
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}	974	}
		975	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		976	{
		977	*wd = (aio_wd)(long)SvIVX (rv);
		978	*wdsv = SvREFCNT_inc_NN (rv);
		979	*ptr = ".";
		980	return; /* path set to "." */
		981	}
		982	else
		983	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		984	}
778		985
779	if (nreqs <= max_outstanding)	986	*pathsv = newSVsv (path);
		987	*ptr = SvPVbyte_nolen (*pathsv);
		988	}
		989
		990	static void ecb_noinline
		991	req_set_path1 (aio_req req, SV *path)
		992	{
		993	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		994	}
		995
		996	static void ecb_noinline
		997	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		998	{
		999	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		1000
		1001	switch (SvTYPE (rv))
		1002	{
		1003	case SVt_PVIO:
		1004	case SVt_PVLV:
		1005	case SVt_PVGV:
		1006	req->type = type_fh;
		1007	req->sv1 = newSVsv (fh_or_path);
		1008	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
780	break;	1009	break;
781		1010
782	poll_wait ();	1011	default:
783		1012	req->type = type_path;
784	++maxreqs;	1013	req_set_path1 (req, fh_or_path);
		1014	break;
785	}	1015	}
786
787	unblock_sig ();
788	return count;
789	}
790
791	static void create_pipe ()
792	{
793	if (pipe (respipe))
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}	1016	}
802		1017
803	/*****************************************************************************/	1018	/*****************************************************************************/
804	/* work around various missing functions */
805		1019
806	#if !HAVE_PREADWRITE	1020	static void
807	# define pread aio_pread	1021	ts_set (struct timespec *ts, NV value)
808	# define pwrite aio_pwrite
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{	1022	{
819	ssize_t res;	1023	ts->tv_sec = value;
820	off_t ooffset;	1024	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
821
822	LOCK (preadwritelock);
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828
829	return res;
830	}	1025	}
831		1026
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1027	static NV
		1028	ts_get (const struct timespec *ts)
833	{	1029	{
834	ssize_t res;	1030	return ts->tv_sec + ts->tv_nsec * 1e-9;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;
938
939	#if HAVE_SENDFILE
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942
943	# elif __freebsd
944	/*
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952	if (res < 0 && sbytes)
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981
982	if (res < 0
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992
993	res = 0;
994
995	while (count)
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001	if (cnt <= 0)
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;
1022	}
1023
1024	/* read a full directory */
1025	static void scandir_ (aio_req req, worker *self)
1026	{
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}	1031	}
1085		1032
1086	/*****************************************************************************/	1033	/*****************************************************************************/
1087		1034
1088	static void *aio_proc (void *thr_arg)	1035	XS(boot_IO__AIO) ecb_cold;
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093		1036
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)
1282	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();
1311
1312	atfork_parent ();
1313	}
1314
1315	#define dREQ \
1316	aio_req req; \
1317	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \
1319	\
1320	if (SvOK (callback) && !SvROK (callback)) \
1321	croak ("callback must be undef or of reference type"); \
1322	\
1323	Newz (0, req, 1, aio_cb); \
1324	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \
1326	\
1327	req->callback = newSVsv (callback); \
1328	req->pri = req_pri
1329
1330	#define REQ_SEND \
1331	req_send (req); \
1332	\
1333	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335
1336	MODULE = IO::AIO PACKAGE = IO::AIO	1037	MODULE = IO::AIO PACKAGE = IO::AIO
1337		1038
1338	PROTOTYPES: ENABLE	1039	PROTOTYPES: ENABLE
1339		1040
1340	BOOT:	1041	BOOT:
1341	{	1042	{
		1043	static const struct {
		1044	const char *name;
		1045	IV iv;
		1046	} *civ, const_iv[] = {
		1047	# define const_niv(name, value) { # name, (IV) value },
		1048	# define const_iv(name) { # name, (IV) name },
		1049	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1050
		1051	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1052	/* the first block can be undef if missing */
		1053	const_iv (ENOSYS)
		1054	const_iv (EXDEV)
		1055	const_iv (EBADR)
		1056
		1057	/* for lseek */
		1058	const_iv (SEEK_DATA)
		1059	const_iv (SEEK_HOLE)
		1060
		1061	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1062	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1063	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1064	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1065	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1066	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1067
		1068	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1069	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1070	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1071	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1072	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1073
		1074	/* the second block will be 0 when missing */
		1075	const_iv (O_ACCMODE)
		1076
		1077	const_iv (O_RDONLY)
		1078	const_iv (O_WRONLY)
		1079	const_iv (O_RDWR)
		1080	const_iv (O_CREAT)
		1081	const_iv (O_TRUNC)
		1082	const_iv (O_EXCL)
		1083	const_iv (O_APPEND)
		1084
		1085	const_iv (O_ASYNC)
		1086	const_iv (O_DIRECT)
		1087	const_iv (O_NOATIME)
		1088
		1089	const_iv (O_CLOEXEC)
		1090	const_iv (O_NOCTTY)
		1091	const_iv (O_NOFOLLOW)
		1092	const_iv (O_NONBLOCK)
		1093	const_iv (O_EXEC)
		1094	const_iv (O_SEARCH)
		1095	const_iv (O_DIRECTORY)
		1096	const_iv (O_DSYNC)
		1097	const_iv (O_RSYNC)
		1098	const_iv (O_SYNC)
		1099	const_iv (O_PATH)
		1100	const_iv (O_TMPFILE)
		1101	const_iv (O_TTY_INIT)
		1102
		1103	const_iv (S_IFIFO)
		1104	const_iv (S_IFCHR)
		1105	const_iv (S_IFBLK)
		1106	const_iv (S_IFLNK)
		1107	const_iv (S_IFREG)
		1108	const_iv (S_IFDIR)
		1109	const_iv (S_IFWHT)
		1110	const_iv (S_IFSOCK)
		1111	const_iv (S_IFMT)
		1112
		1113	const_iv (ST_RDONLY)
		1114	const_iv (ST_NOSUID)
		1115	const_iv (ST_NODEV)
		1116	const_iv (ST_NOEXEC)
		1117	const_iv (ST_SYNCHRONOUS)
		1118	const_iv (ST_MANDLOCK)
		1119	const_iv (ST_WRITE)
		1120	const_iv (ST_APPEND)
		1121	const_iv (ST_IMMUTABLE)
		1122	const_iv (ST_NOATIME)
		1123	const_iv (ST_NODIRATIME)
		1124	const_iv (ST_RELATIME)
		1125
		1126	const_iv (PROT_NONE)
		1127	const_iv (PROT_EXEC)
		1128	const_iv (PROT_READ)
		1129	const_iv (PROT_WRITE)
		1130
		1131	const_iv (MAP_PRIVATE)
		1132	const_iv (MAP_SHARED)
		1133	const_iv (MAP_FIXED)
		1134	const_iv (MAP_ANONYMOUS)
		1135
		1136	/* linuxish */
		1137	const_iv (MAP_LOCKED)
		1138	const_iv (MAP_NORESERVE)
		1139	const_iv (MAP_POPULATE)
		1140	const_iv (MAP_NONBLOCK)
		1141	const_iv (MAP_GROWSDOWN)
		1142	const_iv (MAP_32BIT)
		1143	const_iv (MAP_HUGETLB)
		1144	const_iv (MAP_STACK)
		1145
		1146	const_iv (MREMAP_MAYMOVE)
		1147	const_iv (MREMAP_FIXED)
		1148
		1149	const_iv (F_DUPFD_CLOEXEC)
		1150
		1151	const_iv (MSG_CMSG_CLOEXEC)
		1152	const_iv (SOCK_CLOEXEC)
		1153
		1154	const_iv (F_OFD_GETLK)
		1155	const_iv (F_OFD_SETLK)
		1156	const_iv (F_OFD_GETLKW)
		1157
		1158	const_iv (FIFREEZE)
		1159	const_iv (FITHAW)
		1160	const_iv (FITRIM)
		1161	const_iv (FICLONE)
		1162	const_iv (FICLONERANGE)
		1163	const_iv (FIDEDUPERANGE)
		1164
		1165	const_iv (FS_IOC_GETFLAGS)
		1166	const_iv (FS_IOC_SETFLAGS)
		1167	const_iv (FS_IOC_GETVERSION)
		1168	const_iv (FS_IOC_SETVERSION)
		1169	const_iv (FS_IOC_FIEMAP)
		1170	const_iv (FS_IOC_FSGETXATTR)
		1171	const_iv (FS_IOC_FSSETXATTR)
		1172	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1173	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1174	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1175
		1176	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1177
		1178	const_iv (FS_SECRM_FL)
		1179	const_iv (FS_UNRM_FL)
		1180	const_iv (FS_COMPR_FL)
		1181	const_iv (FS_SYNC_FL)
		1182	const_iv (FS_IMMUTABLE_FL)
		1183	const_iv (FS_APPEND_FL)
		1184	const_iv (FS_NODUMP_FL)
		1185	const_iv (FS_NOATIME_FL)
		1186	const_iv (FS_DIRTY_FL)
		1187	const_iv (FS_COMPRBLK_FL)
		1188	const_iv (FS_NOCOMP_FL)
		1189	const_iv (FS_ENCRYPT_FL)
		1190	const_iv (FS_BTREE_FL)
		1191	const_iv (FS_INDEX_FL)
		1192	const_iv (FS_JOURNAL_DATA_FL)
		1193	const_iv (FS_NOTAIL_FL)
		1194	const_iv (FS_DIRSYNC_FL)
		1195	const_iv (FS_TOPDIR_FL)
		1196	const_iv (FS_FL_USER_MODIFIABLE)
		1197
		1198	const_iv (FS_XFLAG_REALTIME)
		1199	const_iv (FS_XFLAG_PREALLOC)
		1200	const_iv (FS_XFLAG_IMMUTABLE)
		1201	const_iv (FS_XFLAG_APPEND)
		1202	const_iv (FS_XFLAG_SYNC)
		1203	const_iv (FS_XFLAG_NOATIME)
		1204	const_iv (FS_XFLAG_NODUMP)
		1205	const_iv (FS_XFLAG_RTINHERIT)
		1206	const_iv (FS_XFLAG_PROJINHERIT)
		1207	const_iv (FS_XFLAG_NOSYMLINKS)
		1208	const_iv (FS_XFLAG_EXTSIZE)
		1209	const_iv (FS_XFLAG_EXTSZINHERIT)
		1210	const_iv (FS_XFLAG_NODEFRAG)
		1211	const_iv (FS_XFLAG_FILESTREAM)
		1212	const_iv (FS_XFLAG_DAX)
		1213	const_iv (FS_XFLAG_HASATTR)
		1214
		1215	const_iv (FIEMAP_FLAG_SYNC)
		1216	const_iv (FIEMAP_FLAG_XATTR)
		1217	const_iv (FIEMAP_FLAGS_COMPAT)
		1218	const_iv (FIEMAP_EXTENT_LAST)
		1219	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1220	const_iv (FIEMAP_EXTENT_DELALLOC)
		1221	const_iv (FIEMAP_EXTENT_ENCODED)
		1222	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1223	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1224	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1225	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1226	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1227	const_iv (FIEMAP_EXTENT_MERGED)
		1228	const_iv (FIEMAP_EXTENT_SHARED)
		1229
		1230	const_iv (SPLICE_F_MOVE)
		1231	const_iv (SPLICE_F_NONBLOCK)
		1232	const_iv (SPLICE_F_MORE)
		1233	const_iv (SPLICE_F_GIFT)
		1234
		1235	const_iv (EFD_CLOEXEC)
		1236	const_iv (EFD_NONBLOCK)
		1237	const_iv (EFD_SEMAPHORE)
		1238
		1239	const_iv (CLOCK_REALTIME)
		1240	const_iv (CLOCK_MONOTONIC)
		1241	const_iv (CLOCK_BOOTTIME)
		1242	const_iv (CLOCK_REALTIME_ALARM)
		1243	const_iv (CLOCK_BOOTTIME_ALARM)
		1244
		1245	const_iv (TFD_NONBLOCK)
		1246	const_iv (TFD_CLOEXEC)
		1247
		1248	const_iv (TFD_TIMER_ABSTIME)
		1249	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1250
		1251	/* these are libeio constants, and are independent of gendef0 */
		1252	const_eio (SEEK_SET)
		1253	const_eio (SEEK_CUR)
		1254	const_eio (SEEK_END)
		1255
		1256	const_eio (MCL_FUTURE)
		1257	const_eio (MCL_CURRENT)
		1258
		1259	const_eio (MS_ASYNC)
		1260	const_eio (MS_INVALIDATE)
		1261	const_eio (MS_SYNC)
		1262
		1263	const_eio (MT_MODIFY)
		1264
		1265	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1266	const_eio (SYNC_FILE_RANGE_WRITE)
		1267	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1268
		1269	const_eio (FALLOC_FL_KEEP_SIZE)
		1270	const_eio (FALLOC_FL_PUNCH_HOLE)
		1271	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1272	const_eio (FALLOC_FL_ZERO_RANGE)
		1273	const_eio (FALLOC_FL_INSERT_RANGE)
		1274	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1275
		1276	const_eio (RENAME_NOREPLACE)
		1277	const_eio (RENAME_EXCHANGE)
		1278	const_eio (RENAME_WHITEOUT)
		1279
		1280	const_eio (READDIR_DENTS)
		1281	const_eio (READDIR_DIRS_FIRST)
		1282	const_eio (READDIR_STAT_ORDER)
		1283	const_eio (READDIR_FOUND_UNKNOWN)
		1284
		1285	const_eio (DT_UNKNOWN)
		1286	const_eio (DT_FIFO)
		1287	const_eio (DT_CHR)
		1288	const_eio (DT_DIR)
		1289	const_eio (DT_BLK)
		1290	const_eio (DT_REG)
		1291	const_eio (DT_LNK)
		1292	const_eio (DT_SOCK)
		1293	const_eio (DT_WHT)
		1294	};
		1295
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	1296	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1297	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1298	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1299	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1343		1300
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1301	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1302	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351		1303
1352	create_pipe ();	1304	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1354	}
1355		1305
		1306	reinit ();
		1307	}
		1308
1356	void	1309	void
		1310	reinit ()
		1311	PROTOTYPE:
		1312
		1313	void
1357	max_poll_reqs (int nreqs)	1314	max_poll_reqs (unsigned int nreqs)
1358	PROTOTYPE: $	1315	PROTOTYPE: $
1359	CODE:	1316	CODE:
1360	max_poll_reqs = nreqs;	1317	eio_set_max_poll_reqs (nreqs);
1361		1318
1362	void	1319	void
1363	max_poll_time (double nseconds)	1320	max_poll_time (double nseconds)
1364	PROTOTYPE: $	1321	PROTOTYPE: $
1365	CODE:	1322	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	1323	eio_set_max_poll_time (nseconds);
1367		1324
1368	void	1325	void
1369	min_parallel (int nthreads)	1326	min_parallel (unsigned int nthreads)
1370	PROTOTYPE: $
1371
1372	void
1373	max_parallel (int nthreads)
1374	PROTOTYPE: $
1375
1376	void
1377	max_idle (int nthreads)
1378	PROTOTYPE: $	1327	PROTOTYPE: $
1379	CODE:	1328	CODE:
1380	set_max_idle (nthreads);	1329	eio_set_min_parallel (nthreads);
1381		1330
1382	int	1331	void
1383	max_outstanding (int maxreqs)	1332	max_parallel (unsigned int nthreads)
1384	PROTOTYPE: $	1333	PROTOTYPE: $
1385	CODE:	1334	CODE:
1386	RETVAL = max_outstanding;	1335	eio_set_max_parallel (nthreads);
		1336
		1337	void
		1338	max_idle (unsigned int nthreads)
		1339	PROTOTYPE: $
		1340	CODE:
		1341	eio_set_max_idle (nthreads);
		1342
		1343	void
		1344	idle_timeout (unsigned int seconds)
		1345	PROTOTYPE: $
		1346	CODE:
		1347	eio_set_idle_timeout (seconds);
		1348
		1349	void
		1350	max_outstanding (unsigned int maxreqs)
		1351	PROTOTYPE: $
		1352	CODE:
1387	max_outstanding = maxreqs;	1353	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		1354
1391	void	1355	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1356	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1393	PROTOTYPE: $$$;$
1394	PPCODE:	1357	PPCODE:
1395	{	1358	{
1396	dREQ;	1359	dREQ;
1397		1360
		1361	req->type = EIO_WD_OPEN;
		1362	req_set_path1 (req, pathname);
		1363
		1364	REQ_SEND;
		1365	}
		1366
		1367	void
		1368	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1369	PPCODE:
		1370	{
		1371	dREQ;
		1372
1398	req->type = REQ_OPEN;	1373	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	1374	req_set_path1 (req, pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	1375	req->int1 = flags;
1402	req->mode = mode;	1376	req->int2 = mode;
1403		1377
1404	REQ_SEND;	1378	REQ_SEND;
1405	}	1379	}
1406		1380
1407	void	1381	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1382	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1409	PROTOTYPE: $;$
1410	ALIAS:	1383	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC	1384	aio_fsync = EIO_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC	1385	aio_fdatasync = EIO_FDATASYNC
		1386	aio_syncfs = EIO_SYNCFS
1414	PPCODE:	1387	PPCODE:
1415	{	1388	{
		1389	int fd = s_fileno_croak (fh, 0);
1416	dREQ;	1390	dREQ;
1417		1391
1418	req->type = ix;	1392	req->type = ix;
1419	req->sv1 = newSVsv (fh);	1393	req->sv1 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1394	req->int1 = fd;
1421		1395
1422	REQ_SEND (req);	1396	REQ_SEND;
1423	}	1397	}
1424		1398
1425	void	1399	void
		1400	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1401	PPCODE:
		1402	{
		1403	int fd = s_fileno_croak (fh, 0);
		1404	dREQ;
		1405
		1406	req->type = EIO_SYNC_FILE_RANGE;
		1407	req->sv1 = newSVsv (fh);
		1408	req->int1 = fd;
		1409	req->offs = offset;
		1410	req->size = nbytes;
		1411	req->int2 = flags;
		1412
		1413	REQ_SEND;
		1414	}
		1415
		1416	void
		1417	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1418	PPCODE:
		1419	{
		1420	int fd = s_fileno_croak (fh, 0);
		1421	dREQ;
		1422
		1423	req->type = EIO_FALLOCATE;
		1424	req->sv1 = newSVsv (fh);
		1425	req->int1 = fd;
		1426	req->int2 = mode;
		1427	req->offs = offset;
		1428	req->size = len;
		1429
		1430	REQ_SEND;
		1431	}
		1432
		1433	void
		1434	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1435	PPCODE:
		1436	{
		1437	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1438	int fd = s_fileno_croak (fh, 0);
		1439	dREQ;
		1440
		1441	if (expect_false (close_fd < 0))
		1442	{
		1443	int pipefd [2];
		1444
		1445	if (
		1446	#ifdef _WIN32
		1447	_pipe (pipefd, 1, _O_BINARY) < 0
		1448	#else
		1449	pipe (pipefd) < 0
		1450	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1451	#endif
		1452	|| close (pipefd [1]) < 0
		1453	)
		1454	abort (); /*D*/
		1455
		1456	close_fd = pipefd [0];
		1457	}
		1458
		1459	req->type = EIO_DUP2;
		1460	req->int1 = close_fd;
		1461	req->sv2 = newSVsv (fh);
		1462	req->int2 = fd;
		1463
		1464	REQ_SEND;
		1465	}
		1466
		1467	void
		1468	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1469	PPCODE:
		1470	{
		1471	int fd = s_fileno_croak (fh, 0);
		1472	dREQ;
		1473
		1474	req->type = EIO_SEEK;
		1475	req->sv1 = newSVsv (fh);
		1476	req->int1 = fd;
		1477	req->offs = SvVAL64 (offset);
		1478	req->int2 = whence;
		1479
		1480	REQ_SEND;
		1481	}
		1482
		1483	void
1426	aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	1484	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1427	ALIAS:	1485	ALIAS:
1428	aio_read = REQ_READ	1486	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	1487	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$
1431	PPCODE:	1488	PPCODE:
1432	{	1489	{
1433	STRLEN svlen;	1490	STRLEN svlen;
		1491	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	1492	char *svptr = SvPVbyte (data, svlen);
1435		1493	UV len = SvUV (length);
1436	SvUPGRADE (data, SVt_PV);
1437	SvPOK_on (data);
1438		1494
1439	if (dataoffset < 0)	1495	if (dataoffset < 0)
1440	dataoffset += svlen;	1496	dataoffset += svlen;
1441		1497
1442	if (dataoffset < 0 || dataoffset > svlen)	1498	if (dataoffset < 0 || dataoffset > svlen)
1443	croak ("data offset outside of string");	1499	croak ("dataoffset outside of data scalar");
1444		1500
1445	if (ix == REQ_WRITE)	1501	if (ix == EIO_WRITE)
1446	{	1502	{
1447	/* write: check length and adjust. */	1503	/* write: check length and adjust. */
1448	if (length < 0 || length + dataoffset > svlen)	1504	if (!SvOK (length) || len + dataoffset > svlen)
1449	length = svlen - dataoffset;	1505	len = svlen - dataoffset;
1450	}	1506	}
1451	else	1507	else
1452	{	1508	{
1453	/* read: grow scalar as necessary */	1509	/* read: check type and grow scalar as necessary */
		1510	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1454	svptr = SvGROW (data, length + dataoffset + 1);	1511	svptr = sv_grow (data, len + dataoffset + 1);
		1512	else if (SvCUR (data) < len + dataoffset)
		1513	croak ("length + dataoffset outside of scalar, and cannot grow");
1455	}	1514	}
1456
1457	if (length < 0)
1458	croak ("length must not be negative");
1459		1515
1460	{	1516	{
1461	dREQ;	1517	dREQ;
1462		1518
1463	req->type = ix;	1519	req->type = ix;
1464	req->sv1 = newSVsv (fh);	1520	req->sv1 = newSVsv (fh);
1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1521	req->int1 = fd;
1466	: IoOFP (sv_2io (fh)));
1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1522	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1468	req->size = length;	1523	req->size = len;
1469	req->sv2 = SvREFCNT_inc (data);	1524	req->sv2 = SvREFCNT_inc (data);
1470	req->ptr1 = (char *)svptr + dataoffset;	1525	req->ptr2 = (char *)svptr + dataoffset;
1471	req->stroffset = dataoffset;	1526	req->stroffset = dataoffset;
1472		1527
1473	if (!SvREADONLY (data))	1528	if (!SvREADONLY (data))
1474	{	1529	{
1475	SvREADONLY_on (data);	1530	SvREADONLY_on (data);
…		…
1479	REQ_SEND;	1534	REQ_SEND;
1480	}	1535	}
1481	}	1536	}
1482		1537
1483	void	1538	void
1484	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1539	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1485	PROTOTYPE: $$;$	1540	ALIAS:
		1541	aio_ioctl = EIO_IOCTL
		1542	aio_fcntl = EIO_FCNTL
1486	PPCODE:	1543	PPCODE:
1487	{	1544	{
1488	SV *data;	1545	int fd = s_fileno_croak (fh, 0);
1489	dREQ;	1546	char *svptr;
1490		1547
1491	data = newSV (NAME_MAX);	1548	if (SvPOK (arg) || !SvNIOK (arg))
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;
1495	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->sv1);
1497	req->sv2 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499
1500	REQ_SEND;
1501	}
1502
1503	void
1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $$$$;$
1506	PPCODE:
1507	{
1508	dREQ;
1509
1510	req->type = REQ_SENDFILE;
1511	req->sv1 = newSVsv (out_fh);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1513	req->sv2 = newSVsv (in_fh);
1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1515	req->offs = SvVAL64 (in_offset);
1516	req->size = length;
1517
1518	REQ_SEND;
1519	}
1520
1521	void
1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1523	PROTOTYPE: $$$;$
1524	PPCODE:
1525	{
1526	dREQ;
1527
1528	req->type = REQ_READAHEAD;
1529	req->sv1 = newSVsv (fh);
1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1531	req->offs = SvVAL64 (offset);
1532	req->size = length;
1533
1534	REQ_SEND;
1535	}
1536
1537	void
1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1539	ALIAS:
1540	aio_stat = REQ_STAT
1541	aio_lstat = REQ_LSTAT
1542	PPCODE:
1543	{
1544	dREQ;
1545
1546	req->ptr2 = malloc (sizeof (Stat_t));
1547	if (!req->ptr2)
1548	{	1549	{
1549	req_destroy (req);	1550	STRLEN svlen;
1550	croak ("out of memory during aio_stat statdata allocation");	1551	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1551	}	1552	#ifdef IOCPARM_LEN
		1553	STRLEN need = IOCPARM_LEN (request);
		1554	#else
		1555	STRLEN need = 256;
		1556	#endif
1552		1557
1553	req->flags |= FLAG_PTR2_FREE;	1558	if (svlen < need)
1554	req->sv1 = newSVsv (fh_or_path);	1559	svptr = SvGROW (arg, need);
1555
1556	if (SvPOK (fh_or_path))
1557	{
1558	req->type = ix;
1559	req->ptr1 = SvPVbyte_nolen (req->sv1);
1560	}	1560	}
1561	else	1561	else
		1562	svptr = (char *)SvIV (arg);
		1563
1562	{	1564	{
		1565	dREQ;
		1566
1563	req->type = REQ_FSTAT;	1567	req->type = ix;
1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1568	req->sv1 = newSVsv (fh);
		1569	req->int1 = fd;
		1570	req->int2 = (long)request;
		1571	req->sv2 = SvREFCNT_inc (arg);
		1572	req->ptr2 = svptr;
		1573
		1574	REQ_SEND;
1565	}	1575	}
		1576	}
		1577
		1578	void
		1579	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1580	ALIAS:
		1581	aio_readlink = EIO_READLINK
		1582	aio_realpath = EIO_REALPATH
		1583	PPCODE:
		1584	{
		1585	dREQ;
		1586
		1587	req->type = ix;
		1588	req_set_path1 (req, pathname);
1566		1589
1567	REQ_SEND;	1590	REQ_SEND;
1568	}	1591	}
1569		1592
1570	void	1593	void
		1594	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1595	PPCODE:
		1596	{
		1597	int ifd = s_fileno_croak (in_fh , 0);
		1598	int ofd = s_fileno_croak (out_fh, 1);
		1599	dREQ;
		1600
		1601	req->type = EIO_SENDFILE;
		1602	req->sv1 = newSVsv (out_fh);
		1603	req->int1 = ofd;
		1604	req->sv2 = newSVsv (in_fh);
		1605	req->int2 = ifd;
		1606	req->offs = in_offset;
		1607	req->size = length;
		1608
		1609	REQ_SEND;
		1610	}
		1611
		1612	void
		1613	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1614	PPCODE:
		1615	{
		1616	int fd = s_fileno_croak (fh, 0);
		1617	dREQ;
		1618
		1619	req->type = EIO_READAHEAD;
		1620	req->sv1 = newSVsv (fh);
		1621	req->int1 = fd;
		1622	req->offs = offset;
		1623	req->size = length;
		1624
		1625	REQ_SEND;
		1626	}
		1627
		1628	void
		1629	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1630	ALIAS:
		1631	aio_stat = EIO_STAT
		1632	aio_lstat = EIO_LSTAT
		1633	aio_statvfs = EIO_STATVFS
		1634	PPCODE:
		1635	{
		1636	dREQ;
		1637
		1638	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1639
		1640	REQ_SEND;
		1641	}
		1642
		1643	void
		1644	st_xtime ()
		1645	ALIAS:
		1646	st_atime = 1
		1647	st_mtime = 2
		1648	st_ctime = 4
		1649	st_xtime = 7
		1650	PPCODE:
		1651	EXTEND (SP, 3);
		1652	if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1653	if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1654	if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1655
		1656	void
		1657	st_xtimensec ()
		1658	ALIAS:
		1659	st_atimensec = 1
		1660	st_mtimensec = 2
		1661	st_ctimensec = 4
		1662	st_xtimensec = 7
		1663	PPCODE:
		1664	EXTEND (SP, 3);
		1665	if (ix & 1) PUSHs (newSViv (ATIMENSEC));
		1666	if (ix & 2) PUSHs (newSViv (MTIMENSEC));
		1667	if (ix & 4) PUSHs (newSViv (CTIMENSEC));
		1668
		1669	UV
		1670	major (UV dev)
		1671	ALIAS:
		1672	minor = 1
		1673	CODE:
		1674	RETVAL = ix ? minor (dev) : major (dev);
		1675	OUTPUT:
		1676	RETVAL
		1677
		1678	UV
		1679	makedev (UV maj, UV min)
		1680	CODE:
		1681	RETVAL = makedev (maj, min);
		1682	OUTPUT:
		1683	RETVAL
		1684
		1685	void
1571	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1686	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1572	PPCODE:	1687	PPCODE:
1573	{	1688	{
1574	dREQ;	1689	dREQ;
1575		1690
1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1691	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1692	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1578	req->sv1 = newSVsv (fh_or_path);	1693	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1579
1580	if (SvPOK (fh_or_path))
1581	{
1582	req->type = REQ_UTIME;
1583	req->ptr1 = SvPVbyte_nolen (req->sv1);
1584	}
1585	else
1586	{
1587	req->type = REQ_FUTIME;
1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1589	}
1590		1694
1591	REQ_SEND;	1695	REQ_SEND;
1592	}	1696	}
1593		1697
1594	void	1698	void
1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1699	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1596	PPCODE:	1700	PPCODE:
1597	{	1701	{
1598	dREQ;	1702	dREQ;
1599		1703
1600	req->mode = mode;	1704	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1601	req->sv1 = newSVsv (fh_or_path);	1705	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1602
1603	if (SvPOK (fh_or_path))
1604	{
1605	req->type = REQ_CHMOD;
1606	req->ptr1 = SvPVbyte_nolen (req->sv1);
1607	}
1608	else
1609	{
1610	req->type = REQ_FCHMOD;
1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1612	}
1613		1706
1614	REQ_SEND;	1707	REQ_SEND;
1615	}	1708	}
1616		1709
1617	void	1710	void
		1711	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1712	PPCODE:
		1713	{
		1714	dREQ;
		1715
		1716	req->int2 = mode;
		1717	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1718
		1719	REQ_SEND;
		1720	}
		1721
		1722	void
1618	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1723	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1619	PPCODE:	1724	PPCODE:
1620	{	1725	{
1621	dREQ;	1726	dREQ;
1622		1727
1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1728	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1729	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1625	req->sv1 = newSVsv (fh_or_path);	1730	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1626
1627	if (SvPOK (fh_or_path))
1628	{
1629	req->type = REQ_CHOWN;
1630	req->ptr1 = SvPVbyte_nolen (req->sv1);
1631	}
1632	else
1633	{
1634	req->type = REQ_FCHOWN;
1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1636	}
1637		1731
1638	REQ_SEND;	1732	REQ_SEND;
1639	}	1733	}
1640		1734
1641	void	1735	void
		1736	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1737	PPCODE:
		1738	{
		1739	dREQ;
		1740
		1741	req->type = EIO_READDIR;
		1742	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1743
		1744	if (flags & EIO_READDIR_DENTS)
		1745	req->int1 |= EIO_READDIR_CUSTOM2;
		1746
		1747	req_set_path1 (req, pathname);
		1748
		1749	REQ_SEND;
		1750	}
		1751
		1752	void
		1753	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1754	PPCODE:
		1755	{
		1756	dREQ;
		1757
		1758	req->type = EIO_MKDIR;
		1759	req->int2 = mode;
		1760	req_set_path1 (req, pathname);
		1761
		1762	REQ_SEND;
		1763	}
		1764
		1765	void
1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1766	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1643	ALIAS:	1767	ALIAS:
1644	aio_unlink = REQ_UNLINK	1768	aio_unlink = EIO_UNLINK
1645	aio_rmdir = REQ_RMDIR	1769	aio_rmdir = EIO_RMDIR
1646	aio_readdir = REQ_READDIR	1770	aio_readdir = EIO_READDIR
1647	PPCODE:	1771	PPCODE:
1648	{	1772	{
1649	dREQ;	1773	dREQ;
1650		1774
1651	req->type = ix;	1775	req->type = ix;
1652	req->sv1 = newSVsv (pathname);	1776	req_set_path1 (req, pathname);
1653	req->ptr1 = SvPVbyte_nolen (req->sv1);
1654		1777
1655	REQ_SEND;	1778	REQ_SEND;
1656	}	1779	}
1657		1780
1658	void	1781	void
1659	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1660	PPCODE:
1661	{
1662	dREQ;
1663
1664	req->type = REQ_MKDIR;
1665	req->sv1 = newSVsv (pathname);
1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
1667	req->mode = mode;
1668
1669	REQ_SEND;
1670	}
1671
1672	void
1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1782	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1674	ALIAS:	1783	ALIAS:
1675	aio_link = REQ_LINK	1784	aio_link = EIO_LINK
1676	aio_symlink = REQ_SYMLINK	1785	aio_symlink = EIO_SYMLINK
1677	aio_rename = REQ_RENAME	1786	aio_rename = EIO_RENAME
1678	PPCODE:	1787	PPCODE:
1679	{	1788	{
		1789	eio_wd wd2 = 0;
1680	dREQ;	1790	dREQ;
1681		1791
1682	req->type = ix;	1792	req->type = ix;
1683	req->sv2 = newSVsv (oldpath);	1793	req_set_path1 (req, oldpath);
1684	req->ptr2 = SvPVbyte_nolen (req->sv2);	1794	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1685	req->sv1 = newSVsv (newpath);	1795	req->int3 = (long)wd2;
1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1687		1796
1688	REQ_SEND;	1797	REQ_SEND;
1689	}	1798	}
1690		1799
1691	void	1800	void
1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1801	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1693	PPCODE:	1802	PPCODE:
1694	{	1803	{
		1804	eio_wd wd2 = 0;
1695	dREQ;	1805	dREQ;
1696		1806
1697	req->type = REQ_MKNOD;	1807	req->type = EIO_RENAME;
1698	req->sv1 = newSVsv (pathname);	1808	req_set_path1 (req, oldpath);
1699	req->ptr1 = SvPVbyte_nolen (req->sv1);	1809	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1700	req->mode = (mode_t)mode;	1810	req->int2 = flags;
1701	req->offs = dev;	1811	req->int3 = (long)wd2;
1702		1812
1703	REQ_SEND;	1813	REQ_SEND;
1704	}	1814	}
1705		1815
1706	void	1816	void
1707	aio_busy (double delay, SV *callback=&PL_sv_undef)	1817	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1708	PPCODE:	1818	PPCODE:
1709	{	1819	{
1710	dREQ;	1820	dREQ;
		1821
		1822	req->type = EIO_MKNOD;
		1823	req->int2 = (mode_t)mode;
		1824	req->offs = dev;
		1825	req_set_path1 (req, pathname);
		1826
		1827	REQ_SEND;
		1828	}
1711		1829
		1830	void
		1831	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1832	ALIAS:
		1833	aio_mtouch = EIO_MTOUCH
		1834	aio_msync = EIO_MSYNC
		1835	PPCODE:
		1836	{
		1837	STRLEN svlen;
		1838	char *svptr = SvPVbyte (data, svlen);
		1839	UV len = SvUV (length);
		1840
		1841	if (flags < 0)
		1842	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1843
		1844	if (offset < 0)
		1845	offset += svlen;
		1846
		1847	if (offset < 0 || offset > svlen)
		1848	croak ("offset outside of scalar");
		1849
		1850	if (!SvOK (length) || len + offset > svlen)
		1851	len = svlen - offset;
		1852
		1853	{
		1854	dREQ;
		1855
		1856	req->type = ix;
		1857	req->sv2 = SvREFCNT_inc (data);
		1858	req->ptr2 = (char *)svptr + offset;
		1859	req->size = len;
		1860	req->int1 = flags;
		1861
		1862	REQ_SEND;
		1863	}
		1864	}
		1865
		1866	void
		1867	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1868	PPCODE:
		1869	{
		1870	STRLEN svlen;
		1871	char *svptr = SvPVbyte (data, svlen);
		1872	UV len = SvUV (length);
		1873
		1874	if (offset < 0)
		1875	offset += svlen;
		1876
		1877	if (offset < 0 || offset > svlen)
		1878	croak ("offset outside of scalar");
		1879
		1880	if (!SvOK (length) || len + offset > svlen)
		1881	len = svlen - offset;
		1882
		1883	{
		1884	dREQ;
		1885
		1886	req->type = EIO_MLOCK;
		1887	req->sv2 = SvREFCNT_inc (data);
		1888	req->ptr2 = (char *)svptr + offset;
		1889	req->size = len;
		1890
		1891	REQ_SEND;
		1892	}
		1893	}
		1894
		1895	void
		1896	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1897	PPCODE:
		1898	{
		1899	dREQ;
		1900
		1901	req->type = EIO_MLOCKALL;
		1902	req->int1 = flags;
		1903
		1904	REQ_SEND;
		1905	}
		1906
		1907	void
		1908	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1909	PPCODE:
		1910	{
		1911	int fd = s_fileno_croak (fh, 0);
		1912	dREQ;
		1913
		1914	req->type = EIO_CUSTOM;
		1915	req->sv1 = newSVsv (fh);
		1916	req->int1 = fd;
		1917
		1918	req->feed = fiemap;
		1919	#if HAVE_FIEMAP
		1920	/* keep our fingers crossed that the next two types are 64 bit */
		1921	req->offs = start;
		1922	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1923	req->int2 = flags;
		1924	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1925	#endif
		1926
		1927	REQ_SEND;
		1928	}
		1929
		1930	void
		1931	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1932	PPCODE:
		1933	{
		1934	char *svptr = 0;
		1935
		1936	sv_clear_foreign (data);
		1937
		1938	if (length) /* known length, directly read into scalar */
		1939	{
		1940	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1941	svptr = sv_grow (data, length + 1);
		1942	else if (SvCUR (data) < length)
		1943	croak ("length outside of scalar, and cannot grow");
		1944	else
		1945	svptr = SvPVbyte_nolen (data);
		1946	}
		1947
		1948	{
		1949	dREQ;
		1950
		1951	req->type = EIO_SLURP;
		1952	req_set_path1 (req, pathname);
		1953	req->offs = offset;
		1954	req->size = length;
		1955	req->sv2 = SvREFCNT_inc (data);
		1956	req->ptr2 = svptr;
		1957
		1958	if (!SvREADONLY (data))
		1959	{
		1960	SvREADONLY_on (data);
		1961	req->flags |= FLAG_SV2_RO_OFF;
		1962	}
		1963
		1964	REQ_SEND;
		1965	}
		1966	}
		1967
		1968	void
		1969	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1970	PPCODE:
		1971	{
		1972	dREQ;
		1973
1712	req->type = REQ_BUSY;	1974	req->type = EIO_BUSY;
1713	req->nv1 = delay < 0. ? 0. : delay;	1975	req->nv1 = delay < 0. ? 0. : delay;
1714		1976
1715	REQ_SEND;	1977	REQ_SEND;
1716	}	1978	}
1717		1979
1718	void	1980	void
1719	aio_group (SV *callback=&PL_sv_undef)	1981	aio_group (SV *callback = &PL_sv_undef)
1720	PROTOTYPE: ;$
1721	PPCODE:	1982	PPCODE:
1722	{	1983	{
1723	dREQ;	1984	dREQ;
1724		1985
1725	req->type = REQ_GROUP;	1986	req->type = EIO_GROUP;
1726		1987
		1988	PUTBACK;
1727	req_send (req);	1989	req_submit (req);
		1990	SPAGAIN;
		1991
1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1992	XPUSHs (req_sv (req, aio_grp_stash));
1729	}	1993	}
1730		1994
1731	void	1995	void
1732	aio_nop (SV *callback=&PL_sv_undef)	1996	aio_nop (SV *callback = &PL_sv_undef)
		1997	ALIAS:
		1998	aio_nop = EIO_NOP
		1999	aio_sync = EIO_SYNC
1733	PPCODE:	2000	PPCODE:
1734	{	2001	{
1735	dREQ;	2002	dREQ;
1736		2003
1737	req->type = REQ_NOP;	2004	req->type = ix;
1738		2005
1739	REQ_SEND;	2006	REQ_SEND;
1740	}	2007	}
1741		2008
1742	int	2009	int
1743	aioreq_pri (int pri = 0)	2010	aioreq_pri (int pri = NO_INIT)
1744	PROTOTYPE: ;$
1745	CODE:	2011	CODE:
1746	RETVAL = next_pri - PRI_BIAS;	2012	RETVAL = next_pri;
1747	if (items > 0)	2013	if (items > 0)
1748	{	2014	{
1749	if (pri < PRI_MIN) pri = PRI_MIN;	2015	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1750	if (pri > PRI_MAX) pri = PRI_MAX;	2016	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1751	next_pri = pri + PRI_BIAS;	2017	next_pri = pri;
1752	}	2018	}
1753	OUTPUT:	2019	OUTPUT:
1754	RETVAL	2020	RETVAL
1755		2021
1756	void	2022	void
1757	aioreq_nice (int nice = 0)	2023	aioreq_nice (int nice = 0)
1758	CODE:	2024	CODE:
1759	nice = next_pri - nice;	2025	nice = next_pri - nice;
1760	if (nice < PRI_MIN) nice = PRI_MIN;	2026	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1761	if (nice > PRI_MAX) nice = PRI_MAX;	2027	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1762	next_pri = nice + PRI_BIAS;	2028	next_pri = nice;
1763		2029
1764	void	2030	void
1765	flush ()	2031	flush ()
1766	PROTOTYPE:
1767	CODE:	2032	CODE:
1768	while (nreqs)	2033	while (eio_nreqs ())
1769	{	2034	{
1770	poll_wait ();	2035	poll_wait ();
1771	poll_cb ();	2036	poll_cb ();
1772	}	2037	}
1773		2038
1774	int	2039	int
1775	poll()	2040	poll ()
1776	PROTOTYPE:
1777	CODE:	2041	CODE:
1778	poll_wait ();	2042	poll_wait ();
1779	RETVAL = poll_cb ();	2043	RETVAL = poll_cb ();
1780	OUTPUT:	2044	OUTPUT:
1781	RETVAL	2045	RETVAL
1782		2046
1783	int	2047	int
1784	poll_fileno()	2048	poll_fileno ()
1785	PROTOTYPE:
1786	CODE:	2049	CODE:
1787	RETVAL = respipe [0];	2050	RETVAL = s_epipe_fd (&respipe);
1788	OUTPUT:	2051	OUTPUT:
1789	RETVAL	2052	RETVAL
1790		2053
1791	int	2054	int
1792	poll_cb(...)	2055	poll_cb (...)
1793	PROTOTYPE:	2056	PROTOTYPE:
1794	CODE:	2057	CODE:
1795	RETVAL = poll_cb ();	2058	RETVAL = poll_cb ();
1796	OUTPUT:	2059	OUTPUT:
1797	RETVAL	2060	RETVAL
1798		2061
1799	void	2062	void
1800	poll_wait()	2063	poll_wait ()
1801	PROTOTYPE:
1802	CODE:	2064	CODE:
1803	poll_wait ();	2065	poll_wait ();
1804		2066
1805	void
1806	setsig (int signum = SIGIO)
1807	PROTOTYPE: ;$
1808	CODE:
1809	{
1810	if (block_sig_level)
1811	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1812
1813	LOCK (reslock);
1814	main_tid = pthread_self ();
1815	main_sig = signum;
1816	UNLOCK (reslock);
1817
1818	if (main_sig && npending)
1819	pthread_kill (main_tid, main_sig);
1820	}
1821
1822	void
1823	aio_block (SV *cb)
1824	PROTOTYPE: &
1825	PPCODE:
1826	{
1827	int count;
1828
1829	block_sig ();
1830	PUSHMARK (SP);
1831	PUTBACK;
1832	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1833	SPAGAIN;
1834	unblock_sig ();
1835
1836	if (SvTRUE (ERRSV))
1837	croak (0);
1838
1839	XSRETURN (count);
1840	}
1841
1842	int	2067	int
1843	nreqs()	2068	nreqs ()
1844	PROTOTYPE:
1845	CODE:	2069	CODE:
1846	RETVAL = nreqs;	2070	RETVAL = eio_nreqs ();
1847	OUTPUT:	2071	OUTPUT:
1848	RETVAL	2072	RETVAL
1849		2073
1850	int	2074	int
1851	nready()	2075	nready ()
1852	PROTOTYPE:
1853	CODE:	2076	CODE:
1854	RETVAL = get_nready ();	2077	RETVAL = eio_nready ();
1855	OUTPUT:	2078	OUTPUT:
1856	RETVAL	2079	RETVAL
1857		2080
1858	int	2081	int
1859	npending()	2082	npending ()
1860	PROTOTYPE:
1861	CODE:	2083	CODE:
1862	RETVAL = get_npending ();	2084	RETVAL = eio_npending ();
1863	OUTPUT:	2085	OUTPUT:
1864	RETVAL	2086	RETVAL
1865		2087
1866	int	2088	int
1867	nthreads()	2089	nthreads ()
1868	PROTOTYPE:
1869	CODE:	2090	CODE:
1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);	2091	RETVAL = eio_nthreads ();
1871	RETVAL = started;
1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1873	OUTPUT:	2092	OUTPUT:
1874	RETVAL	2093	RETVAL
1875		2094
		2095	int
		2096	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2097	CODE:
		2098	RETVAL = posix_fadvise (fh, offset, length, advice);
		2099	OUTPUT:
		2100	RETVAL
		2101
		2102	IV
		2103	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2104	CODE:
		2105	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2106	OUTPUT:
		2107	RETVAL
		2108
		2109	void
		2110	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2111	PPCODE:
		2112	sv_clear_foreign (scalar);
		2113	{
		2114	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2115	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2116	if (addr == (void *)-1)
		2117	XSRETURN_NO;
		2118
		2119	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2120
		2121	if (!(prot & PROT_WRITE))
		2122	SvREADONLY_on (scalar);
		2123
		2124	XSRETURN_YES;
		2125	}
		2126
		2127	void
		2128	munmap (SV *scalar)
		2129	CODE:
		2130	sv_clear_foreign (scalar);
		2131
		2132	SV *
		2133	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2134	CODE:
		2135	{
		2136	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2137	void *new;
		2138
		2139	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2140	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2141
		2142	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2143
		2144	RETVAL = &PL_sv_no;
		2145
		2146	if (new != (void *)-1)
		2147	{
		2148	RETVAL = new == (void *)mg->mg_ptr
		2149	? newSVpvn ("0 but true", 10)
		2150	: &PL_sv_yes;
		2151
		2152	mg->mg_ptr = (char *)new;
		2153	mg->mg_obj = (SV *)new_length;
		2154
		2155	SvPVX (scalar) = mg->mg_ptr;
		2156	SvCUR_set (scalar, new_length);
		2157	}
		2158	}
		2159	OUTPUT:
		2160	RETVAL
		2161
		2162	int
		2163	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2164	ALIAS:
		2165	mprotect = 1
		2166	CODE:
		2167	{
		2168	STRLEN svlen;
		2169	void *addr = SvPVbyte (scalar, svlen);
		2170	STRLEN len = SvUV (length);
		2171
		2172	if (offset < 0)
		2173	offset += svlen;
		2174
		2175	if (offset < 0 || offset > svlen)
		2176	croak ("offset outside of scalar");
		2177
		2178	if (!SvOK (length) || len + offset > svlen)
		2179	len = svlen - offset;
		2180
		2181	addr = (void *)(((intptr_t)addr) + offset);
		2182	eio_page_align (&addr, &len);
		2183
		2184	switch (ix)
		2185	{
		2186	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2187	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2188	}
		2189	}
		2190	OUTPUT:
		2191	RETVAL
		2192
		2193	int
		2194	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2195	CODE:
		2196	{
		2197	STRLEN svlen;
		2198	void *addr = SvPVbyte (scalar, svlen);
		2199	size_t len = SvUV (length);
		2200
		2201	if (offset < 0)
		2202	offset += svlen;
		2203
		2204	if (offset < 0 || offset > svlen)
		2205	croak ("offset outside of scalar");
		2206
		2207	if (!SvOK (length) || len + offset > svlen)
		2208	len = svlen - offset;
		2209
		2210	addr = (void *)(((intptr_t)addr) + offset);
		2211	eio_page_align (&addr, &len);
		2212	#if _POSIX_MEMLOCK_RANGE
		2213	RETVAL = munlock (addr, len);
		2214	#else
		2215	RETVAL = EIO_ENOSYS ();
		2216	#endif
		2217	}
		2218	OUTPUT:
		2219	RETVAL
		2220
		2221	int
		2222	munlockall ()
		2223	CODE:
		2224	#if _POSIX_MEMLOCK
		2225	munlockall ();
		2226	#else
		2227	RETVAL = EIO_ENOSYS ();
		2228	#endif
		2229	OUTPUT:
		2230	RETVAL
		2231
		2232	int
		2233	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2234	CODE:
		2235	{
		2236	#if HAVE_LINUX_SPLICE
		2237	loff_t off_in_, off_out_;
		2238	RETVAL = splice (
		2239	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2240	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2241	length, flags
		2242	);
		2243	#else
		2244	RETVAL = EIO_ENOSYS ();
		2245	#endif
		2246	}
		2247	OUTPUT:
		2248	RETVAL
		2249
		2250	int
		2251	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2252	CODE:
		2253	#if HAVE_LINUX_SPLICE
		2254	RETVAL = tee (rfh, wfh, length, flags);
		2255	#else
		2256	RETVAL = EIO_ENOSYS ();
		2257	#endif
		2258	OUTPUT:
		2259	RETVAL
		2260
		2261	int
		2262	pipesize (aio_rfd rfh, int new_size = -1)
		2263	PROTOTYPE: $;$
		2264	CODE:
		2265	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2266	if (new_size >= 0)
		2267	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2268	else
		2269	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2270	#else
		2271	errno = ENOSYS;
		2272	RETVAL = -1;
		2273	#endif
		2274	OUTPUT:
		2275	RETVAL
		2276
		2277	void
		2278	pipe2 (int flags = 0)
		2279	PROTOTYPE: ;$
		2280	PPCODE:
		2281	{
		2282	int fd[2];
		2283	int res;
		2284
		2285	if (flags)
		2286	#if HAVE_PIPE2
		2287	res = pipe2 (fd, flags);
		2288	#else
		2289	res = (errno = ENOSYS, -1);
		2290	#endif
		2291	else
		2292	res = pipe (fd);
		2293
		2294	if (!res)
		2295	{
		2296	EXTEND (SP, 2);
		2297	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2298	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2299	}
		2300	}
		2301
		2302	void
		2303	eventfd (unsigned int initval = 0, int flags = 0)
		2304	PPCODE:
		2305	{
		2306	int fd;
		2307	#if HAVE_EVENTFD
		2308	fd = eventfd (initval, flags);
		2309	#else
		2310	fd = (errno = ENOSYS, -1);
		2311	#endif
		2312
		2313	XPUSHs (newmortalFH (fd, O_RDWR));
		2314	}
		2315
		2316	void
		2317	timerfd_create (int clockid, int flags = 0)
		2318	PPCODE:
		2319	{
		2320	int fd;
		2321	#if HAVE_TIMERFD
		2322	fd = timerfd_create (clockid, flags);
		2323	#else
		2324	fd = (errno = ENOSYS, -1);
		2325	#endif
		2326
		2327	XPUSHs (newmortalFH (fd, O_RDWR));
		2328	}
		2329
		2330	void
		2331	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2332	PPCODE:
		2333	{
		2334	int fd = s_fileno_croak (fh, 0);
		2335	#if HAVE_TIMERFD
		2336	int res;
		2337	struct itimerspec its, ots;
		2338
		2339	ts_set (&its.it_interval, interval);
		2340	ts_set (&its.it_value , value);
		2341	res = timerfd_settime (fd, flags, &its, &ots);
		2342
		2343	if (!res)
		2344	{
		2345	EXTEND (SP, 2);
		2346	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2347	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2348	}
		2349	#else
		2350	errno = ENOSYS;
		2351	#endif
		2352	}
		2353
		2354	void
		2355	timerfd_gettime (SV *fh)
		2356	PPCODE:
		2357	{
		2358	int fd = s_fileno_croak (fh, 0);
		2359	#if HAVE_TIMERFD
		2360	int res;
		2361	struct itimerspec ots;
		2362	res = timerfd_gettime (fd, &ots);
		2363
		2364	if (!res)
		2365	{
		2366	EXTEND (SP, 2);
		2367	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2368	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2369	}
		2370	#else
		2371	errno = ENOSYS;
		2372	#endif
		2373	}
		2374
		2375	UV
		2376	get_fdlimit ()
		2377	CODE:
		2378	#if HAVE_RLIMITS
		2379	struct rlimit rl;
		2380	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2381	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2382	#endif
		2383	XSRETURN_UNDEF;
		2384	OUTPUT:
		2385	RETVAL
		2386
		2387	void
		2388	min_fdlimit (UV limit = 0x7fffffffU)
		2389	CODE:
		2390	{
		2391	#if HAVE_RLIMITS
		2392	struct rlimit rl;
		2393	rlim_t orig_rlim_max;
		2394	UV bit;
		2395
		2396	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2397	goto fail;
		2398
		2399	if (rl.rlim_cur == RLIM_INFINITY)
		2400	XSRETURN_YES;
		2401
		2402	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2403
		2404	if (rl.rlim_cur < limit)
		2405	{
		2406	rl.rlim_cur = limit;
		2407
		2408	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2409	rl.rlim_max = rl.rlim_cur;
		2410	}
		2411
		2412	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2413	XSRETURN_YES;
		2414
		2415	if (errno == EPERM)
		2416	{
		2417	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2418	/* our limit overflows a system-wide limit */
		2419	/* try an adaptive algorithm, but do not lower the hardlimit */
		2420	rl.rlim_max = 0;
		2421	for (bit = 0x40000000U; bit; bit >>= 1)
		2422	{
		2423	rl.rlim_max |= bit;
		2424	rl.rlim_cur = rl.rlim_max;
		2425
		2426	/* nevr decrease the hard limit */
		2427	if (rl.rlim_max < orig_rlim_max)
		2428	break;
		2429
		2430	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2431	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2432	}
		2433
		2434	/* now, raise the soft limit to the max permitted */
		2435	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2436	{
		2437	rl.rlim_cur = rl.rlim_max;
		2438	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2439	errno = EPERM;
		2440	}
		2441	}
		2442	#endif
		2443	fail:
		2444	XSRETURN_UNDEF;
		2445	}
		2446
		2447	void _on_next_submit (SV *cb)
		2448	CODE:
		2449	SvREFCNT_dec (on_next_submit);
		2450	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2451
1876	PROTOTYPES: DISABLE	2452	PROTOTYPES: DISABLE
		2453
		2454	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2455
		2456	BOOT:
		2457	{
		2458	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2459	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2460	}
		2461
		2462	void
		2463	DESTROY (SV *self)
		2464	CODE:
		2465	{
		2466	aio_wd wd = SvAIO_WD (self);
		2467	#if HAVE_AT
		2468	{
		2469	SV *callback = &PL_sv_undef;
		2470	dREQ; /* clobbers next_pri :/ */
		2471	next_pri = req->pri; /* restore next_pri */
		2472	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2473	req->type = EIO_WD_CLOSE;
		2474	req->wd = wd;
		2475	REQ_SEND;
		2476	}
		2477	#else
		2478	eio_wd_close_sync (wd);
		2479	#endif
		2480	}
1877		2481
1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2482	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1879		2483
1880	void	2484	void
1881	cancel (aio_req_ornot req)	2485	cancel (aio_req_ornot req)
1882	CODE:	2486	CODE:
1883	req_cancel (req);	2487	eio_cancel (req);
1884		2488
1885	void	2489	void
1886	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2490	cb (aio_req_ornot req, SV *callback = NO_INIT)
1887	CODE:	2491	PPCODE:
		2492	{
		2493	if (GIMME_V != G_VOID)
		2494	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2495
		2496	if (items > 1)
		2497	{
		2498	SV *cb_cv = get_cb (callback);
		2499
1888	SvREFCNT_dec (req->callback);	2500	SvREFCNT_dec (req->callback);
1889	req->callback = newSVsv (callback);	2501	req->callback = SvREFCNT_inc (cb_cv);
		2502	}
		2503	}
1890		2504
1891	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2505	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1892		2506
1893	void	2507	void
1894	add (aio_req grp, ...)	2508	add (aio_req grp, ...)
1895	PPCODE:	2509	PPCODE:
1896	{	2510	{
1897	int i;	2511	int i;
1898	aio_req req;
1899
1900	if (main_sig && !block_sig_level)
1901	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1902		2512
1903	if (grp->int1 == 2)	2513	if (grp->int1 == 2)
1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2514	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1905		2515
1906	for (i = 1; i < items; ++i )	2516	for (i = 1; i < items; ++i )
1907	{	2517	{
		2518	aio_req req;
		2519
1908	if (GIMME_V != G_VOID)	2520	if (GIMME_V != G_VOID)
1909	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2521	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1910		2522
1911	req = SvAIO_REQ (ST (i));	2523	req = SvAIO_REQ (ST (i));
1912		2524
1913	if (req)	2525	if (req)
1914	{	2526	eio_grp_add (grp, req);
1915	++grp->size;
1916	req->grp = grp;
1917
1918	req->grp_prev = 0;
1919	req->grp_next = grp->grp_first;
1920
1921	if (grp->grp_first)
1922	grp->grp_first->grp_prev = req;
1923
1924	grp->grp_first = req;
1925	}
1926	}	2527	}
1927	}	2528	}
1928		2529
1929	void	2530	void
1930	cancel_subs (aio_req_ornot req)	2531	cancel_subs (aio_req_ornot req)
…		…
1939	AV *av;	2540	AV *av;
1940		2541
1941	grp->errorno = errno;	2542	grp->errorno = errno;
1942		2543
1943	av = newAV ();	2544	av = newAV ();
		2545	av_extend (av, items - 1);
1944		2546
1945	for (i = 1; i < items; ++i )	2547	for (i = 1; i < items; ++i )
1946	av_push (av, newSVsv (ST (i)));	2548	av_push (av, newSVsv (ST (i)));
1947		2549
1948	SvREFCNT_dec (grp->sv1);	2550	SvREFCNT_dec (grp->sv1);
…		…
1955	grp->errorno = errorno;	2557	grp->errorno = errorno;
1956		2558
1957	void	2559	void
1958	limit (aio_req grp, int limit)	2560	limit (aio_req grp, int limit)
1959	CODE:	2561	CODE:
1960	grp->int2 = limit;	2562	eio_grp_limit (grp, limit);
1961	aio_grp_feed (grp);
1962		2563
1963	void	2564	void
1964	feed (aio_req grp, SV *callback=&PL_sv_undef)	2565	feed (aio_req grp, SV *callback = &PL_sv_undef)
1965	CODE:	2566	CODE:
1966	{	2567	{
1967	SvREFCNT_dec (grp->sv2);	2568	SvREFCNT_dec (grp->sv2);
1968	grp->sv2 = newSVsv (callback);	2569	grp->sv2 = newSVsv (callback);
		2570	grp->feed = aio_grp_feed;
1969		2571
1970	if (grp->int2 <= 0)	2572	if (grp->int2 <= 0)
1971	grp->int2 = 2;	2573	grp->int2 = 2;
1972		2574
1973	aio_grp_feed (grp);	2575	eio_grp_limit (grp, grp->int2);
1974	}	2576	}
1975		2577

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