[ViewVC] Diff of: cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs.
Revision 1.262 by root, Sun Aug 12 05:21:35 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 _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
		24	# include <sys/mman.h>
		25	#endif
		26
		27	/* the incompetent fool that created musl keeps __linux__, refuses
		28	* to implement any linux standard apis, and also has no way to test
		29	* for his broken iplementation. don't complain to me if this fails
		30	* for you.
		31	*/
		32	#if __linux__ && (defined __GLIBC__ \|\| defined __UCLIBC__)
		33	# include <linux/fs.h>
		34	# ifdef FS_IOC_FIEMAP
		35	# include <linux/types.h>
		36	# include <linux/fiemap.h>
		37	# define HAVE_FIEMAP 1
		38	# endif
		39	#endif
		40
		41	/* perl namespace pollution */
		42	#undef VERSION
		43
		44	/* perl stupidly overrides readdir and maybe others */
		45	/* with thread-unsafe versions, imagine that :( */
		46	#undef readdir
		47	#undef opendir
		48	#undef closedir
		49
		50	#ifdef _WIN32
		51
		52	// perl overrides all those nice libc functions
		53
		54	#undef malloc
		55	#undef free
		56	#undef open
		57	#undef read
		58	#undef write
		59	#undef send
		60	#undef recv
		61	#undef stat
		62	#undef lstat
		63	#undef fstat
		64	#undef truncate
		65	#undef ftruncate
		66	#undef open
		67	#undef link
		68	#undef close
		69	#undef unlink
		70	#undef mkdir
		71	#undef rmdir
		72	#undef rename
		73	#undef lseek
		74	#undef opendir
		75	#undef readdir
		76	#undef closedir
		77	#undef chmod
		78	#undef fchmod
		79	#undef dup
		80	#undef dup2
		81	#undef abort
		82	#undef pipe
		83
		84	#define EIO_STRUCT_STAT struct _stati64
		85	#define EIO_STRUCT_STATI64
		86
		87	#else
		88
		89	#include <sys/time.h>
		90	#include <sys/select.h>
		91	#include <unistd.h>
23	#include <utime.h>	92	#include <utime.h>
		93	#include <signal.h>
24		94
25	#if HAVE_SENDFILE	95	#define EIO_STRUCT_STAT Stat_t
26	# if __linux	96
		97	#endif
		98
		99	/*****************************************************************************/
		100
		101	#if __GNUC__ >= 3
		102	# define expect(expr,value) __builtin_expect ((expr),(value))
		103	#else
		104	# define expect(expr,value) (expr)
		105	#endif
		106
		107	#define expect_false(expr) expect ((expr) != 0, 0)
		108	#define expect_true(expr) expect ((expr) != 0, 1)
		109
		110	/*****************************************************************************/
		111
		112	#include "config.h"
		113
		114	#if HAVE_ST_XTIMENSEC
		115	# define ATIMENSEC PL_statcache.st_atimensec
		116	# define MTIMENSEC PL_statcache.st_mtimensec
		117	# define CTIMENSEC PL_statcache.st_ctimensec
		118	#elif HAVE_ST_XTIMESPEC
		119	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		120	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		121	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		122	#else
		123	# define ATIMENSEC 0
		124	# define MTIMENSEC 0
		125	# define CTIMENSEC 0
		126	#endif
		127
		128	#include "schmorp.h"
		129
		130	#if HAVE_EVENTFD
27	# include <sys/sendfile.h>	131	# include <sys/eventfd.h>
28	# elif __freebsd	132	#endif
29	# include <sys/socket.h>	133
		134	#if HAVE_TIMERFD
30	# include <sys/uio.h>	135	# include <sys/timerfd.h>
31	# elif __hpux	136	#endif
		137
		138	#if HAVE_RLIMITS
		139	#include <sys/time.h>
32	# include <sys/socket.h>	140	#include <sys/resource.h>
33	# elif __solaris /* not yet */	141	#endif
34	# include <sys/sendfile.h>	142
		143	typedef SV SV8; /* byte-sv, used for argument-checking */
		144	typedef int aio_rfd; /* read file desriptor */
		145	typedef int aio_wfd; /* write file descriptor */
		146
		147	static HV aio_stash, aio_req_stash, aio_grp_stash, aio_wd_stash;
		148
		149	#define EIO_REQ_MEMBERS \
		150	SV *callback; \
		151	SV sv1, sv2; \
		152	SV sv3, sv4; \
		153	STRLEN stroffset; \
		154	SV *self;
		155
		156	#define EIO_NO_WRAPPERS 1
		157
		158	#include "libeio/eio.h"
		159
		160	static int req_invoke (eio_req *req);
		161	#define EIO_FINISH(req) req_invoke (req)
		162	static void req_destroy (eio_req *grp);
		163	#define EIO_DESTROY(req) req_destroy (req)
		164
		165	#include "libeio/eio.c"
		166
		167	#if !HAVE_POSIX_FADVISE
		168	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		169	#endif
		170
		171	#if !HAVE_POSIX_MADVISE
		172	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		173	#endif
		174
		175	#ifndef MAP_ANONYMOUS
		176	# ifdef MAP_ANON
		177	# define MAP_ANONYMOUS MAP_ANON
35	# else	178	# else
36	# error sendfile support requested but not available	179	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	180	# endif
38	#endif	181	#endif
39		182
40	/* number of seconds after which idle threads exit */	183	#ifndef makedev
41	#define IDLE_TIMEOUT 10	184	# 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	185	#endif
		186	#ifndef major
		187	# define major(dev) ((dev) >> 8)
		188	#endif
		189	#ifndef minor
		190	# define minor(dev) ((dev) & 0xff)
		191	#endif
47		192
48	/* buffer size for various temporary buffers */	193	#if PAGESIZE <= 0
49	#define AIO_BUFSIZE 65536	194	# define PAGESIZE sysconf (_SC_PAGESIZE)
		195	#endif
50		196
51	#define dBUF \	197	/*****************************************************************************/
52	char *aio_buf; \	198
53	LOCK (wrklock); \	199	#if !_POSIX_MAPPED_FILES
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	200	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
55	UNLOCK (wrklock); \	201	# define munmap(addr,length) EIO_ENOSYS ()
56	if (!aio_buf) \	202	#endif
		203
		204	#if !_POSIX_MEMORY_PROTECTION
		205	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		206	#endif
		207
		208	#if !MREMAP_MAYMOVE
		209	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		210	#endif
		211
		212	#define FOREIGN_MAGIC PERL_MAGIC_ext
		213
		214	static int ecb_cold
		215	mmap_free (pTHX_ SV sv, MAGIC mg)
		216	{
		217	int old_errno = errno;
		218	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		219	errno = old_errno;
		220
		221	mg->mg_obj = 0; /* just in case */
		222
		223	SvREADONLY_off (sv);
		224
		225	if (SvPVX (sv) != mg->mg_ptr)
		226	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		227
		228	SvCUR_set (sv, 0);
		229	SvPVX (sv) = 0;
		230	SvOK_off (sv);
		231
57	return -1;	232	return 0;
		233	}
58		234
59	typedef SV SV8; /* byte-sv, used for argument-checking */	235	static MGVTBL mmap_vtbl = {
60		236	0, 0, 0, 0, mmap_free
61	enum {
62	REQ_QUIT,
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	237	};
77		238
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	239	static int ecb_cold
79	#define AIO_GRP_KLASS "IO::AIO::GRP"	240	sysfree_free (pTHX_ SV sv, MAGIC mg)
80
81	typedef struct aio_cb
82	{	241	{
83	struct aio_cb *volatile next;	242	free (mg->mg_ptr);
		243	mg->mg_obj = 0; /* just in case */
84		244
85	SV *callback;	245	SvREADONLY_off (sv);
86	SV sv1, sv2;
87	void ptr1, ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92		246
93	STRLEN stroffset;	247	if (SvPVX (sv) != mg->mg_ptr)
94	int type;	248	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98		249
99	unsigned char flags;	250	SvCUR_set (sv, 0);
100	unsigned char pri;	251	SvPVX (sv) = 0;
		252	SvOK_off (sv);
101		253
102	SV self; / the perl counterpart of this request, if any */	254	return 0;
103	struct aio_cb grp, grp_prev, grp_next, grp_first;	255	}
104	} aio_cb;
105		256
106	enum {	257	static MGVTBL sysfree_vtbl = {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */	258	0, 0, 0, 0, sysfree_free
108	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};	259	};
111		260
112	typedef aio_cb *aio_req;	261	/*****************************************************************************/
113	typedef aio_cb *aio_req_ornot;
114		262
115	enum {	263	/* helper: set scalar to foreign ptr with custom free */
116	PRI_MIN = -4,	264	static void
117	PRI_MAX = 4,	265	sv_set_foreign (SV sv, const MGVTBL const vtbl, void *addr, IV length)
118
119	DEFAULT_PRI = 0,
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval tv1, struct timeval tv2)
131	{	266	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	267	sv_force_normal (sv);
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135		268
136	static thread_t main_tid;	269	/* we store the length in mg_obj, as namlen is I32 :/ */
137	static int main_sig;	270	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
138	static int block_sig_level;	271	->mg_obj = (SV *)length;
139		272
140	void block_sig ()	273	SvUPGRADE (sv, SVt_PV); /* nop... */
141	{
142	sigset_t ss;
143		274
144	if (block_sig_level++)	275	if (SvLEN (sv))
		276	Safefree (SvPVX (sv));
		277
		278	SvPVX (sv) = (char *)addr;
		279	SvCUR_set (sv, length);
		280	SvLEN_set (sv, 0);
		281	SvPOK_only (sv);
		282	}
		283
		284	static void
		285	sv_clear_foreign (SV *sv)
		286	{
		287	/* todo: iterate over magic and only free ours, but of course */
		288	/* the perl5porters will call that (correct) behaviour buggy */
		289	sv_unmagic (sv, FOREIGN_MAGIC);
		290	}
		291
		292	/*****************************************************************************/
		293
		294	/* defines all sorts of constants to 0 unless they are already defined */
		295	/* also provides const_iv_ and const_niv_ macros for them */
		296	#include "def0.h"
		297
		298	/*****************************************************************************/
		299
		300	static void
		301	fiemap (eio_req *req)
		302	{
		303	req->result = -1;
		304
		305	#if HAVE_FIEMAP
		306	/* assume some c99 */
		307	struct fiemap *fiemap = 0;
		308	size_t end_offset;
		309	int count = req->int3;
		310
		311	req->flags \|= EIO_FLAG_PTR1_FREE;
		312
		313	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		314	/* increase in 3.5kb steps */
		315	if (count < 0)
		316	count = 8;
		317
		318	fiemap = malloc (sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		319	errno = ENOMEM;
		320	if (!fiemap)
145	return;	321	return;
146		322
147	if (!main_sig)	323	req->ptr1 = fiemap;
		324
		325	fiemap->fm_start = req->offs;
		326	fiemap->fm_length = req->size;
		327	fiemap->fm_flags = req->int2;
		328	fiemap->fm_extent_count = count;
		329
		330	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
148	return;	331	return;
149		332
150	sigemptyset (&ss);	333	if (req->int3 >= 0 /* not autosizing */
151	sigaddset (&ss, main_sig);	334	\|\| !fiemap->fm_mapped_extents /* no more extents */
152	pthread_sigmask (SIG_BLOCK, &ss, 0);	335	\|\| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
153	}	336	goto done;
154		337
155	void unblock_sig ()	338	/* else we have to loop -
156	{	339	* it would be tempting (actually I tried that first) to just query the
157	sigset_t ss;	340	* number of extents needed, but linux often feels like not returning all
		341	* extents, without telling us it left any out. this complicates
		342	* this quite a bit.
		343	*/
158		344
159	if (--block_sig_level)	345	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
160	return;
161		346
162	if (!main_sig)	347	for (;;)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker prev, next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{	348	{
195	closedir (wrk->dirp);	349	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
196	wrk->dirp = 0;	350	char scratch[3072];
197	}	351	struct fiemap incmap = (struct fiemap )scratch;
198		352
199	if (wrk->dbuf)	353	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
200	{	354	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
201	free (wrk->dbuf);	355	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
202	wrk->dbuf = 0;	356	incmap->fm_flags = fiemap->fm_flags;
203	}	357	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
204	}
205		358
206	static void worker_free (worker *wrk)	359	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;	360	return;
301		361
302	--q->size;	362	if (!incmap->fm_mapped_extents)
		363	goto done;
303		364
304	for (pri = NUM_PRI; pri--; )	365	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
305	{	366	fiemap = realloc (fiemap, sizeof (fiemap) + sizeof (struct fiemap_extent) count);
306	aio_req req = q->qs[pri];	367	errno = ENOMEM;
307
308	if (req)	368	if (!fiemap)
		369	return;
		370
		371	req->ptr1 = fiemap;
		372
		373	for (count = 0; count < incmap->fm_mapped_extents; ++count)
309	{	374	{
310	if (!(q->qs[pri] = req->next))	375	struct fiemap_extent *e = incmap->fm_extents + count;
311	q->qe[pri] = 0;
312		376
313	return req;	377	if (e->fe_logical + e->fe_length >= end_offset)
		378	goto done;
		379
		380	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		381
		382	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		383	goto done;
		384
314	}	385	}
315	}	386	}
316		387
317	abort ();	388	done:
318	}	389	req->result = 0;
319		390
320	static int poll_cb ();	391	#else
321	static int req_invoke (aio_req req);	392	errno = ENOSYS;
		393	#endif
		394	}
		395
		396	/*****************************************************************************/
		397
		398	enum {
		399	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		400	};
		401
		402	typedef eio_req *aio_req;
		403	typedef eio_req *aio_req_ornot;
		404	typedef eio_wd aio_wd;
		405
		406	static SV *on_next_submit;
		407	static int next_pri = EIO_PRI_DEFAULT;
		408	static int max_outstanding;
		409
		410	static s_epipe respipe;
		411
322	static void req_free (aio_req req);	412	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	413	static void req_cancel (aio_req req);
324		414
		415	static void
		416	want_poll (void)
		417	{
		418	/* write a dummy byte to the pipe so fh becomes ready */
		419	s_epipe_signal (&respipe);
		420	}
		421
		422	static void
		423	done_poll (void)
		424	{
		425	/* read any signals sent by the worker threads */
		426	s_epipe_drain (&respipe);
		427	}
		428
325	/* must be called at most once */	429	/* must be called at most once */
326	static SV req_sv (aio_req req, const char klass)	430	static SV *
		431	req_sv (aio_req req, HV *stash)
327	{	432	{
328	if (!req->self)	433	if (!req->self)
329	{	434	{
330	req->self = (SV *)newHV ();	435	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	436	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	437	}
333		438
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	439	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	440	}
336		441
337	static aio_req SvAIO_REQ (SV *sv)	442	static SV *
		443	newSVaio_wd (aio_wd wd)
		444	{
		445	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		446	}
		447
		448	static aio_req
		449	SvAIO_REQ (SV *sv)
338	{	450	{
339	MAGIC *mg;	451	MAGIC *mg;
340		452
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	453	if (!SvROK (sv)
		454	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		455	\|\| (SvSTASH (SvRV (sv)) != aio_grp_stash
		456	&& SvSTASH (SvRV (sv)) != aio_req_stash
		457	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	458	croak ("object of class IO::AIO::REQ expected");
343		459
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	460	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		461
346	return mg ? (aio_req)mg->mg_ptr : 0;	462	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	463	}
348		464
		465	static aio_wd
		466	SvAIO_WD (SV *sv)
		467	{
		468	if (!SvROK (sv)
		469	\|\| SvTYPE (SvRV (sv)) != SVt_PVMG
		470	\|\| SvSTASH (SvRV (sv)) != aio_wd_stash)
		471	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		472
		473	return (aio_wd)(long)SvIVX (SvRV (sv));
		474	}
		475
		476	static SV *
		477	newmortalFH (int fd, int flags)
		478	{
		479	if (fd < 0)
		480	return &PL_sv_undef;
		481
		482	GV gv = (GV )sv_newmortal ();
		483	char sym[64];
		484	int symlen;
		485
		486	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		487	gv_init (gv, aio_stash, sym, symlen, 0);
		488
		489	symlen = snprintf (
		490	sym,
		491	sizeof (sym),
		492	"%s&=%d",
		493	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		494	fd
		495	);
		496
		497	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		498	? (SV *)gv : &PL_sv_undef;
		499	}
		500
		501	static void
349	static void aio_grp_feed (aio_req grp)	502	aio_grp_feed (aio_req grp)
350	{	503	{
351	block_sig ();	504	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	505	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	506	dSP;
360		507
361	ENTER;	508	ENTER;
362	SAVETMPS;	509	SAVETMPS;
363	PUSHMARK (SP);	510	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	511	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	512	PUTBACK;
366	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);	513	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);
367	SPAGAIN;	514	SPAGAIN;
368	FREETMPS;	515	FREETMPS;
369	LEAVE;	516	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	517	}
380
381	unblock_sig ();
382	}	518	}
383		519
384	static void aio_grp_dec (aio_req grp)	520	static void
		521	req_submit (eio_req *req)
385	{	522	{
386	--grp->size;	523	eio_submit (req);
387		524
388	/* call feeder, if applicable */	525	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	526	{
394	block_sig ();	527	dSP;
		528	SV *cb = sv_2mortal (on_next_submit);
395		529
396	if (!req_invoke (grp))	530	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		531
403	req_free (grp);	532	PUSHMARK (SP);
404	unblock_sig ();	533	PUTBACK;
		534	call_sv (cb, G_DISCARD \| G_EVAL);
405	}	535	}
406	}	536	}
407		537
		538	static int
408	static int req_invoke (aio_req req)	539	req_invoke (eio_req *req)
409	{	540	{
410	dSP;
411
412	if (req->flags & FLAG_SV1_RO_OFF)	541	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv1);	542	SvREADONLY_off (req->sv2);
414		543
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	544	if (!EIO_CANCELLED (req) && req->callback)
416	{	545	{
		546	dSP;
		547	static SV sv_result_cache; / caches the result integer SV */
		548	SV *sv_result;
		549
417	ENTER;	550	ENTER;
418	SAVETMPS;	551	SAVETMPS;
419	PUSHMARK (SP);	552	PUSHMARK (SP);
420	EXTEND (SP, 1);	553	EXTEND (SP, 1);
421		554
		555	/* do not recreate the result IV from scratch each time */
		556	if (expect_true (sv_result_cache))
		557	{
		558	sv_result = sv_result_cache; sv_result_cache = 0;
		559	SvIV_set (sv_result, req->result);
		560	SvIOK_only (sv_result);
		561	}
		562	else
		563	{
		564	sv_result = newSViv (req->result);
		565	SvREADONLY_on (sv_result);
		566	}
		567
422	switch (req->type)	568	switch (req->type)
423	{	569	{
		570	case EIO_WD_OPEN:
		571	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		572	break;
		573
424	case REQ_READDIR:	574	case EIO_READDIR:
425	{	575	{
426	SV *rv = &PL_sv_undef;	576	SV *rv = &PL_sv_undef;
427		577
428	if (req->result >= 0)	578	if (req->result >= 0)
429	{	579	{
430	int i;	580	int i;
431	char *buf = req->ptr2;	581	char names = (char )req->ptr2;
		582	eio_dirent ent = (eio_dirent )req->ptr1; /* might be 0 */
432	AV *av = newAV ();	583	AV *av = newAV ();
433		584
434	av_extend (av, req->result - 1);	585	av_extend (av, req->result - 1);
435		586
436	for (i = 0; i < req->result; ++i)	587	for (i = 0; i < req->result; ++i)
437	{	588	{
438	SV *sv = newSVpv (buf, 0);	589	if (req->int1 & EIO_READDIR_DENTS)
		590	{
		591	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		592
		593	if (req->int1 & EIO_READDIR_CUSTOM2)
		594	{
		595	static SV sv_type [EIO_DT_MAX + 1]; / type sv cache */
		596	AV *avent = newAV ();
		597
		598	av_extend (avent, 2);
		599
		600	if (!sv_type [ent->type])
		601	{
		602	sv_type [ent->type] = newSViv (ent->type);
		603	SvREADONLY_on (sv_type [ent->type]);
		604	}
		605
		606	av_store (avent, 0, namesv);
		607	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		608	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		609
		610	av_store (av, i, newRV_noinc ((SV *)avent));
		611	}
		612	else
440	av_store (av, i, sv);	613	av_store (av, i, namesv);
		614
		615	++ent;
		616	}
		617	else
		618	{
		619	SV *name = newSVpv (names, 0);
		620	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	621	names += SvCUR (name) + 1;
		622	}
442	}	623	}
443		624
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	625	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	626	}
446		627
447	PUSHs (rv);	628	PUSHs (rv);
		629
		630	if (req->int1 & EIO_READDIR_CUSTOM1)
		631	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 \| EIO_READDIR_CUSTOM2))));
448	}	632	}
449	break;	633	break;
450		634
451	case REQ_OPEN:	635	case EIO_OPEN:
		636	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY \| O_WRONLY \| O_RDWR)));
		637	break;
		638
		639	case EIO_STATVFS:
		640	case EIO_FSTATVFS:
452	{	641	{
453	/* convert fd to fh */	642	SV *rv = &PL_sv_undef;
454	SV *fh;	643
		644	#ifndef _WIN32
		645	if (req->result >= 0)
		646	{
		647	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		648	HV *hv = newHV ();
		649	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		650	* chooses to make it a struct.
		651	*/
		652	unsigned long fsid = 0;
		653	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
455		654
456	PUSHs (sv_2mortal (newSViv (req->result)));	655	rv = sv_2mortal (newRV_noinc ((SV *)hv));
457	PUTBACK;
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);
459	SPAGAIN;
460		656
461	fh = POPs;	657	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
462	PUSHMARK (SP);	658	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		659	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		660	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		661	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		662	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		663	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		664	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		665	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		666	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		667	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		668	}
		669	#endif
		670
463	XPUSHs (fh);	671	PUSHs (rv);
464	}	672	}
		673
465	break;	674	break;
466		675
467	case REQ_GROUP:	676	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	677	req->int1 = 2; /* mark group as finished */
469		678
470	if (req->sv1)	679	if (req->sv1)
471	{	680	{
472	int i;	681	int i;
476	for (i = 0; i <= AvFILL (av); ++i)	685	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	686	PUSHs (*av_fetch (av, i, 0));
478	}	687	}
479	break;	688	break;
480		689
481	case REQ_NOP:	690	case EIO_NOP:
482	case REQ_BUSY:	691	case EIO_BUSY:
483	break;	692	break;
484		693
485	case REQ_READLINK:	694	case EIO_READLINK:
		695	case EIO_REALPATH:
486	if (req->result > 0)	696	if (req->result > 0)
		697	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		698	break;
		699
		700	case EIO_STAT:
		701	case EIO_LSTAT:
		702	case EIO_FSTAT:
		703	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		704
		705	if (!(PL_laststatval = req->result))
		706	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		707	PL_statcache = (EIO_STRUCT_STAT )(req->ptr2);
		708
		709	PUSHs (sv_result);
		710	break;
		711
		712	case EIO_SEEK:
		713	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		714	break;
		715
		716	case EIO_READ:
		717	{
		718	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		719	*SvEND (req->sv2) = 0;
		720	SvPOK_only (req->sv2);
		721	SvSETMAGIC (req->sv2);
		722	PUSHs (sv_result);
		723	}
		724	break;
		725
		726	case EIO_SLURP:
		727	{
		728	if (req->result >= 0)
		729	{
		730	/* if length was originally not known, we steal the malloc'ed memory */
		731	if (req->flags & EIO_FLAG_PTR2_FREE)
		732	{
		733	req->flags &= ~EIO_FLAG_PTR2_FREE;
		734	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		735	}
		736	else
		737	{
		738	SvCUR_set (req->sv2, req->result);
		739	*SvEND (req->sv2) = 0;
		740	SvPOK_only (req->sv2);
		741	}
		742
		743	SvSETMAGIC (req->sv2);
		744	}
		745
		746	PUSHs (sv_result);
		747	}
		748	break;
		749
		750	case EIO_CUSTOM:
		751	if (req->feed == fiemap)
487	{	752	{
488	SvCUR_set (req->sv2, req->result);	753	#if HAVE_FIEMAP
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);	754	if (!req->result)
		755	{
		756	struct fiemap fiemap = (struct fiemap )req->ptr1;
		757
		758	if (fiemap->fm_extent_count)
		759	{
		760	AV *av = newAV ();
		761	int i;
		762
		763	while (fiemap->fm_mapped_extents)
		764	{
		765	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		766	AV *ext_av = newAV ();
		767
		768	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		769	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		770	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		771	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		772
		773	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		774	}
		775
		776	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		777	}
		778	else
		779	{
		780	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		781	PUSHs (sv_result);
		782	}
		783	}
		784	#endif
491	}	785	}
		786	else
		787	PUSHs (sv_result);
492	break;	788	break;
493		789
494	case REQ_STAT:	790	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
495	case REQ_LSTAT:	791	if (req->result > 0)
496	case REQ_FSTAT:	792	SvIV_set (sv_result, 0);
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	793	/* FALLTHROUGH */
498	PL_laststatval = req->result;
499	PL_statcache = (Stat_t )(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));
501	break;
502
503	case REQ_READ:
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));
507	break;
508		794
509	default:	795	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	796	PUSHs (sv_result);
511	break;	797	break;
512	}	798	}
513		799
514	errno = req->errorno;	800	errno = req->errorno;
515		801
516	PUTBACK;	802	PUTBACK;
517	call_sv (req->callback, G_VOID \| G_EVAL);	803	call_sv (req->callback, G_VOID \| G_EVAL \| G_DISCARD);
518	SPAGAIN;	804	SPAGAIN;
		805
		806	if (expect_false (SvREFCNT (sv_result) != 1 \|\| sv_result_cache))
		807	SvREFCNT_dec (sv_result);
		808	else
		809	sv_result_cache = sv_result;
519		810
520	FREETMPS;	811	FREETMPS;
521	LEAVE;	812	LEAVE;
		813
		814	PUTBACK;
522	}	815	}
523		816
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	817	return !!SvTRUE (ERRSV);
539	}	818	}
540		819
541	static void req_free (aio_req req)	820	static void
		821	req_destroy (aio_req req)
542	{	822	{
543	if (req->self)	823	if (req->self)
544	{	824	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	825	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	826	SvREFCNT_dec (req->self);
547	}	827	}
548		828
549	SvREFCNT_dec (req->sv1);	829	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	830	SvREFCNT_dec (req->sv2);
		831	SvREFCNT_dec (req->sv3);
		832	SvREFCNT_dec (req->sv4);
551	SvREFCNT_dec (req->callback);	833	SvREFCNT_dec (req->callback);
552		834
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	835	free (req);
557	}	836	}
558		837
		838	static void
559	static void req_cancel_subs (aio_req grp)	839	req_cancel_subs (aio_req grp)
560	{	840	{
561	aio_req sub;
562
563	if (grp->type != REQ_GROUP)	841	if (grp->type != EIO_GROUP)
564	return;	842	return;
565		843
566	SvREFCNT_dec (grp->sv2);	844	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	845	grp->sv2 = 0;
568		846
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	847	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	848	}
572		849
573	static void req_cancel (aio_req req)	850	static void ecb_cold
		851	create_respipe (void)
574	{	852	{
575	req->flags \|= FLAG_CANCELLED;	853	if (s_epipe_renew (&respipe))
576		854	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	855	}
579		856
580	static void aio_proc(void arg);	857	static void
581		858	poll_wait (void)
582	static void start_thread (void)
583	{	859	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()
676	{
677	fd_set rfd;
678
679	while (nreqs)	860	while (eio_nreqs ())
680	{	861	{
681	int size;	862	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	863
		864	X_LOCK (EIO_POOL->reslock);
683	size = res_queue.size;	865	size = EIO_POOL->res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	866	X_UNLOCK (EIO_POOL->reslock);
685		867
686	if (size)	868	if (size)
687	return;	869	return;
688		870
689	maybe_start_thread ();	871	etp_maybe_start_thread (EIO_POOL);
690		872
691	FD_ZERO(&rfd);	873	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	874	}
696	}	875	}
697		876
698	static int poll_cb ()	877	static int
		878	poll_cb (void)
699	{	879	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	880	for (;;)
713	{	881	{
714	for (;;)	882	int res = eio_poll ();
		883
		884	if (res > 0)
		885	croak (0);
		886
		887	if (!max_outstanding \|\| max_outstanding > eio_nreqs ())
		888	return res;
		889
		890	poll_wait ();
		891	}
		892	}
		893
		894	static void ecb_cold
		895	reinit (void)
		896	{
		897	create_respipe ();
		898
		899	if (eio_init (want_poll, done_poll) < 0)
		900	croak ("IO::AIO: unable to initialise eio library");
		901	}
		902
		903	/*****************************************************************************/
		904
		905	static SV *
		906	get_cb (SV *cb_sv)
		907	{
		908	SvGETMAGIC (cb_sv);
		909	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		910	}
		911
		912	static aio_req ecb_noinline
		913	dreq (SV *callback)
		914	{
		915	SV *cb_cv;
		916	aio_req req;
		917	int req_pri = next_pri;
		918	next_pri = EIO_PRI_DEFAULT;
		919
		920	cb_cv = get_cb (callback);
		921
		922	req = calloc (sizeof (*req), 1);
		923	if (!req)
		924	croak ("out of memory during eio_req allocation");
		925
		926	req->callback = SvREFCNT_inc (cb_cv);
		927	req->pri = req_pri;
		928
		929	return req;
		930	}
		931
		932	#define dREQ \
		933	aio_req req = dreq (callback); \
		934
		935	#define REQ_SEND \
		936	PUTBACK; \
		937	req_submit (req); \
		938	SPAGAIN; \
		939	\
		940	if (GIMME_V != G_VOID) \
		941	XPUSHs (req_sv (req, aio_req_stash));
		942
		943	ecb_inline void
		944	req_set_path (aio_req req, SV path, SV wdsv, SV pathsv, eio_wd wd, void **ptr)
		945	{
		946	if (expect_false (SvROK (path)))
		947	{
		948	SV *rv = SvRV (path);
		949	SV *wdob;
		950
		951	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715	{	952	{
716	maybe_start_thread ();	953	path = AvARRAY (rv)[1];
		954	wdob = AvARRAY (rv)[0];
717		955
718	LOCK (reslock);	956	if (SvOK (wdob))
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{	957	{
723	--npending;	958	*wd = SvAIO_WD (wdob);
724		959	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}	960	}
746	else	961	else
747	{	962	*wd = EIO_INVALID_WD;
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);
753	}
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}	963	}
		964	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		965	{
		966	*wd = (aio_wd)(long)SvIVX (rv);
		967	*wdsv = SvREFCNT_inc_NN (rv);
		968	*ptr = ".";
		969	return; /* path set to "." */
		970	}
		971	else
		972	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		973	}
771		974
772	if (nreqs <= max_outstanding)	975	*pathsv = newSVsv (path);
		976	ptr = SvPVbyte_nolen (pathsv);
		977	}
		978
		979	static void ecb_noinline
		980	req_set_path1 (aio_req req, SV *path)
		981	{
		982	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		983	}
		984
		985	static void ecb_noinline
		986	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		987	{
		988	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		989
		990	switch (SvTYPE (rv))
		991	{
		992	case SVt_PVIO:
		993	case SVt_PVLV:
		994	case SVt_PVGV:
		995	req->type = type_fh;
		996	req->sv1 = newSVsv (fh_or_path);
		997	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773	break;	998	break;
774		999
775	poll_wait ();	1000	default:
776		1001	req->type = type_path;
777	++maxreqs;	1002	req_set_path1 (req, fh_or_path);
		1003	break;
778	}	1004	}
779
780	unblock_sig ();
781	return count;
782	}
783
784	static void create_pipe ()
785	{
786	if (pipe (respipe))
787	croak ("unable to initialize result pipe");
788
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}	1005	}
795		1006
796	/*****************************************************************************/	1007	/*****************************************************************************/
797	/* work around various missing functions */
798		1008
799	#if !HAVE_PREADWRITE	1009	static void
800	# define pread aio_pread	1010	ts_set (struct timespec *ts, NV value)
801	# define pwrite aio_pwrite
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{	1011	{
812	ssize_t res;	1012	ts->tv_sec = value;
813	off_t ooffset;	1013	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}	1014	}
824		1015
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1016	static NV
		1017	ts_get (const struct timespec *ts)
826	{	1018	{
827	ssize_t res;	1019	return ts->tv_sec + ts->tv_nsec * 1e-9;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974
975	if (res < 0
976	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
977	#if __solaris
978	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
979	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985
986	res = 0;
987
988	while (count)
989	{
990	ssize_t cnt;
991
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
993
994	if (cnt <= 0)
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999
1000	cnt = write (ofd, aio_buf, cnt);
1001
1002	if (cnt <= 0)
1003	{
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007
1008	offset += cnt;
1009	res += cnt;
1010	count -= cnt;
1011	}
1012	}
1013
1014	return res;
1015	}
1016
1017	/* read a full directory */
1018	static void scandir_ (aio_req req, worker *self)
1019	{
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char name, names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags \|= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}	1020	}
1078		1021
1079	/*****************************************************************************/	1022	/*****************************************************************************/
1080		1023
1081	static void aio_proc (void thr_arg)	1024	XS(boot_IO__AIO) ecb_cold;
1082	{
1083	aio_req req;
1084	struct timespec ts;
1085	worker self = (worker )thr_arg;
1086		1025
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. \|\| req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}
1303
1304	#define dREQ \
1305	aio_req req; \
1306	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \
1308	\
1309	if (SvOK (callback) && !SvROK (callback)) \
1310	croak ("callback must be undef or of reference type"); \
1311	\
1312	Newz (0, req, 1, aio_cb); \
1313	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \
1315	\
1316	req->callback = newSVsv (callback); \
1317	req->pri = req_pri
1318
1319	#define REQ_SEND \
1320	req_send (req); \
1321	\
1322	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1324
1325	MODULE = IO::AIO PACKAGE = IO::AIO	1026	MODULE = IO::AIO PACKAGE = IO::AIO
1326		1027
1327	PROTOTYPES: ENABLE	1028	PROTOTYPES: ENABLE
1328		1029
1329	BOOT:	1030	BOOT:
1330	{	1031	{
		1032	static const struct {
		1033	const char *name;
		1034	IV iv;
		1035	} *civ, const_iv[] = {
		1036	# define const_niv(name, value) { # name, (IV) value },
		1037	# define const_iv(name) { # name, (IV) name },
		1038	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1039
		1040	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1041	/* the first block can be undef if missing */
		1042	const_iv (ENOSYS)
		1043	const_iv (EXDEV)
		1044	const_iv (EBADR)
		1045
		1046	/* for lseek */
		1047	const_iv (SEEK_DATA)
		1048	const_iv (SEEK_HOLE)
		1049
		1050	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1051	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1052	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1053	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1054	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1055	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1056
		1057	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1058	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1059	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1060	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1061	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1062
		1063	/* the second block will be 0 when missing */
		1064	const_iv (O_ACCMODE)
		1065
		1066	const_iv (O_RDONLY)
		1067	const_iv (O_WRONLY)
		1068	const_iv (O_RDWR)
		1069	const_iv (O_CREAT)
		1070	const_iv (O_TRUNC)
		1071	const_iv (O_EXCL)
		1072	const_iv (O_APPEND)
		1073
		1074	const_iv (O_ASYNC)
		1075	const_iv (O_DIRECT)
		1076	const_iv (O_NOATIME)
		1077
		1078	const_iv (O_CLOEXEC)
		1079	const_iv (O_NOCTTY)
		1080	const_iv (O_NOFOLLOW)
		1081	const_iv (O_NONBLOCK)
		1082	const_iv (O_EXEC)
		1083	const_iv (O_SEARCH)
		1084	const_iv (O_DIRECTORY)
		1085	const_iv (O_DSYNC)
		1086	const_iv (O_RSYNC)
		1087	const_iv (O_SYNC)
		1088	const_iv (O_PATH)
		1089	const_iv (O_TMPFILE)
		1090	const_iv (O_TTY_INIT)
		1091
		1092	const_iv (S_IFIFO)
		1093	const_iv (S_IFCHR)
		1094	const_iv (S_IFBLK)
		1095	const_iv (S_IFLNK)
		1096	const_iv (S_IFREG)
		1097	const_iv (S_IFDIR)
		1098	const_iv (S_IFWHT)
		1099	const_iv (S_IFSOCK)
		1100	const_iv (S_IFMT)
		1101
		1102	const_iv (ST_RDONLY)
		1103	const_iv (ST_NOSUID)
		1104	const_iv (ST_NODEV)
		1105	const_iv (ST_NOEXEC)
		1106	const_iv (ST_SYNCHRONOUS)
		1107	const_iv (ST_MANDLOCK)
		1108	const_iv (ST_WRITE)
		1109	const_iv (ST_APPEND)
		1110	const_iv (ST_IMMUTABLE)
		1111	const_iv (ST_NOATIME)
		1112	const_iv (ST_NODIRATIME)
		1113	const_iv (ST_RELATIME)
		1114
		1115	const_iv (PROT_NONE)
		1116	const_iv (PROT_EXEC)
		1117	const_iv (PROT_READ)
		1118	const_iv (PROT_WRITE)
		1119
		1120	const_iv (MAP_PRIVATE)
		1121	const_iv (MAP_SHARED)
		1122	const_iv (MAP_FIXED)
		1123	const_iv (MAP_ANONYMOUS)
		1124
		1125	/* linuxish */
		1126	const_iv (MAP_LOCKED)
		1127	const_iv (MAP_NORESERVE)
		1128	const_iv (MAP_POPULATE)
		1129	const_iv (MAP_NONBLOCK)
		1130	const_iv (MAP_GROWSDOWN)
		1131	const_iv (MAP_32BIT)
		1132	const_iv (MAP_HUGETLB)
		1133	const_iv (MAP_STACK)
		1134
		1135	const_iv (MREMAP_MAYMOVE)
		1136	const_iv (MREMAP_FIXED)
		1137
		1138	const_iv (F_DUPFD_CLOEXEC)
		1139
		1140	const_iv (MSG_CMSG_CLOEXEC)
		1141	const_iv (SOCK_CLOEXEC)
		1142
		1143	const_iv (F_OFD_GETLK)
		1144	const_iv (F_OFD_SETLK)
		1145	const_iv (F_OFD_GETLKW)
		1146
		1147	const_iv (FIFREEZE)
		1148	const_iv (FITHAW)
		1149	const_iv (FITRIM)
		1150	const_iv (FICLONE)
		1151	const_iv (FICLONERANGE)
		1152	const_iv (FIDEDUPERANGE)
		1153
		1154	const_iv (FS_IOC_GETFLAGS)
		1155	const_iv (FS_IOC_SETFLAGS)
		1156	const_iv (FS_IOC_GETVERSION)
		1157	const_iv (FS_IOC_SETVERSION)
		1158	const_iv (FS_IOC_FIEMAP)
		1159	const_iv (FS_IOC_FSGETXATTR)
		1160	const_iv (FS_IOC_FSSETXATTR)
		1161	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1162	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1163	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1164
		1165	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1166
		1167	const_iv (FS_SECRM_FL)
		1168	const_iv (FS_UNRM_FL)
		1169	const_iv (FS_COMPR_FL)
		1170	const_iv (FS_SYNC_FL)
		1171	const_iv (FS_IMMUTABLE_FL)
		1172	const_iv (FS_APPEND_FL)
		1173	const_iv (FS_NODUMP_FL)
		1174	const_iv (FS_NOATIME_FL)
		1175	const_iv (FS_DIRTY_FL)
		1176	const_iv (FS_COMPRBLK_FL)
		1177	const_iv (FS_NOCOMP_FL)
		1178	const_iv (FS_ENCRYPT_FL)
		1179	const_iv (FS_BTREE_FL)
		1180	const_iv (FS_INDEX_FL)
		1181	const_iv (FS_JOURNAL_DATA_FL)
		1182	const_iv (FS_NOTAIL_FL)
		1183	const_iv (FS_DIRSYNC_FL)
		1184	const_iv (FS_TOPDIR_FL)
		1185	const_iv (FS_FL_USER_MODIFIABLE)
		1186
		1187	const_iv (FS_XFLAG_REALTIME)
		1188	const_iv (FS_XFLAG_PREALLOC)
		1189	const_iv (FS_XFLAG_IMMUTABLE)
		1190	const_iv (FS_XFLAG_APPEND)
		1191	const_iv (FS_XFLAG_SYNC)
		1192	const_iv (FS_XFLAG_NOATIME)
		1193	const_iv (FS_XFLAG_NODUMP)
		1194	const_iv (FS_XFLAG_RTINHERIT)
		1195	const_iv (FS_XFLAG_PROJINHERIT)
		1196	const_iv (FS_XFLAG_NOSYMLINKS)
		1197	const_iv (FS_XFLAG_EXTSIZE)
		1198	const_iv (FS_XFLAG_EXTSZINHERIT)
		1199	const_iv (FS_XFLAG_NODEFRAG)
		1200	const_iv (FS_XFLAG_FILESTREAM)
		1201	const_iv (FS_XFLAG_DAX)
		1202	const_iv (FS_XFLAG_HASATTR)
		1203
		1204	const_iv (FIEMAP_FLAG_SYNC)
		1205	const_iv (FIEMAP_FLAG_XATTR)
		1206	const_iv (FIEMAP_FLAGS_COMPAT)
		1207	const_iv (FIEMAP_EXTENT_LAST)
		1208	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1209	const_iv (FIEMAP_EXTENT_DELALLOC)
		1210	const_iv (FIEMAP_EXTENT_ENCODED)
		1211	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1212	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1213	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1214	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1215	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1216	const_iv (FIEMAP_EXTENT_MERGED)
		1217	const_iv (FIEMAP_EXTENT_SHARED)
		1218
		1219	const_iv (SPLICE_F_MOVE)
		1220	const_iv (SPLICE_F_NONBLOCK)
		1221	const_iv (SPLICE_F_MORE)
		1222	const_iv (SPLICE_F_GIFT)
		1223
		1224	const_iv (EFD_CLOEXEC)
		1225	const_iv (EFD_NONBLOCK)
		1226	const_iv (EFD_SEMAPHORE)
		1227
		1228	const_iv (CLOCK_REALTIME)
		1229	const_iv (CLOCK_MONOTONIC)
		1230	const_iv (CLOCK_BOOTTIME)
		1231	const_iv (CLOCK_REALTIME_ALARM)
		1232	const_iv (CLOCK_BOOTTIME_ALARM)
		1233
		1234	const_iv (TFD_NONBLOCK)
		1235	const_iv (TFD_CLOEXEC)
		1236
		1237	const_iv (TFD_TIMER_ABSTIME)
		1238	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1239
		1240	/* these are libeio constants, and are independent of gendef0 */
		1241	const_eio (SEEK_SET)
		1242	const_eio (SEEK_CUR)
		1243	const_eio (SEEK_END)
		1244
		1245	const_eio (MCL_FUTURE)
		1246	const_eio (MCL_CURRENT)
		1247
		1248	const_eio (MS_ASYNC)
		1249	const_eio (MS_INVALIDATE)
		1250	const_eio (MS_SYNC)
		1251
		1252	const_eio (MT_MODIFY)
		1253
		1254	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1255	const_eio (SYNC_FILE_RANGE_WRITE)
		1256	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1257
		1258	const_eio (FALLOC_FL_KEEP_SIZE)
		1259	const_eio (FALLOC_FL_PUNCH_HOLE)
		1260	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1261	const_eio (FALLOC_FL_ZERO_RANGE)
		1262	const_eio (FALLOC_FL_INSERT_RANGE)
		1263	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1264
		1265	const_eio (RENAME_NOREPLACE)
		1266	const_eio (RENAME_EXCHANGE)
		1267	const_eio (RENAME_WHITEOUT)
		1268
		1269	const_eio (READDIR_DENTS)
		1270	const_eio (READDIR_DIRS_FIRST)
		1271	const_eio (READDIR_STAT_ORDER)
		1272	const_eio (READDIR_FOUND_UNKNOWN)
		1273
		1274	const_eio (DT_UNKNOWN)
		1275	const_eio (DT_FIFO)
		1276	const_eio (DT_CHR)
		1277	const_eio (DT_DIR)
		1278	const_eio (DT_BLK)
		1279	const_eio (DT_REG)
		1280	const_eio (DT_LNK)
		1281	const_eio (DT_SOCK)
		1282	const_eio (DT_WHT)
		1283	};
		1284
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	1285	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1286	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1287	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1288	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1332		1289
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1290	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1291	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		1292
1341	create_pipe ();	1293	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1343	}
1344		1294
		1295	reinit ();
		1296	}
		1297
1345	void	1298	void
		1299	reinit ()
		1300	PROTOTYPE:
		1301
		1302	void
1346	max_poll_reqs (int nreqs)	1303	max_poll_reqs (unsigned int nreqs)
1347	PROTOTYPE: $	1304	PROTOTYPE: $
1348	CODE:	1305	CODE:
1349	max_poll_reqs = nreqs;	1306	eio_set_max_poll_reqs (nreqs);
1350		1307
1351	void	1308	void
1352	max_poll_time (double nseconds)	1309	max_poll_time (double nseconds)
1353	PROTOTYPE: $	1310	PROTOTYPE: $
1354	CODE:	1311	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	1312	eio_set_max_poll_time (nseconds);
1356		1313
1357	void	1314	void
1358	min_parallel (int nthreads)	1315	min_parallel (unsigned int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_parallel (int nthreads)
1363	PROTOTYPE: $
1364
1365	void
1366	max_idle (int nthreads)
1367	PROTOTYPE: $	1316	PROTOTYPE: $
1368	CODE:	1317	CODE:
1369	set_max_idle (nthreads);	1318	eio_set_min_parallel (nthreads);
1370		1319
1371	int	1320	void
1372	max_outstanding (int maxreqs)	1321	max_parallel (unsigned int nthreads)
1373	PROTOTYPE: $	1322	PROTOTYPE: $
1374	CODE:	1323	CODE:
1375	RETVAL = max_outstanding;	1324	eio_set_max_parallel (nthreads);
		1325
		1326	void
		1327	max_idle (unsigned int nthreads)
		1328	PROTOTYPE: $
		1329	CODE:
		1330	eio_set_max_idle (nthreads);
		1331
		1332	void
		1333	idle_timeout (unsigned int seconds)
		1334	PROTOTYPE: $
		1335	CODE:
		1336	eio_set_idle_timeout (seconds);
		1337
		1338	void
		1339	max_outstanding (unsigned int maxreqs)
		1340	PROTOTYPE: $
		1341	CODE:
1376	max_outstanding = maxreqs;	1342	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		1343
1380	void	1344	void
1381	aio_open (SV8 pathname, int flags, int mode, SV callback=&PL_sv_undef)	1345	aio_wd (SV8 pathname, SV callback = &PL_sv_undef)
1382	PROTOTYPE: $$$;$
1383	PPCODE:	1346	PPCODE:
1384	{	1347	{
1385	dREQ;	1348	dREQ;
1386		1349
		1350	req->type = EIO_WD_OPEN;
		1351	req_set_path1 (req, pathname);
		1352
		1353	REQ_SEND;
		1354	}
		1355
		1356	void
		1357	aio_open (SV8 pathname, int flags, int mode, SV callback = &PL_sv_undef)
		1358	PPCODE:
		1359	{
		1360	dREQ;
		1361
1387	req->type = REQ_OPEN;	1362	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	1363	req_set_path1 (req, pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	1364	req->int1 = flags;
1391	req->mode = mode;	1365	req->int2 = mode;
1392		1366
1393	REQ_SEND;	1367	REQ_SEND;
1394	}	1368	}
1395		1369
1396	void	1370	void
1397	aio_close (SV fh, SV callback=&PL_sv_undef)	1371	aio_fsync (SV fh, SV callback = &PL_sv_undef)
1398	PROTOTYPE: $;$
1399	ALIAS:	1372	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	1373	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	1374	aio_fdatasync = EIO_FDATASYNC
		1375	aio_syncfs = EIO_SYNCFS
1403	PPCODE:	1376	PPCODE:
1404	{	1377	{
		1378	int fd = s_fileno_croak (fh, 0);
1405	dREQ;	1379	dREQ;
1406		1380
1407	req->type = ix;	1381	req->type = ix;
1408	req->sv1 = newSVsv (fh);	1382	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1383	req->int1 = fd;
1410		1384
1411	REQ_SEND (req);	1385	REQ_SEND;
1412	}	1386	}
1413		1387
1414	void	1388	void
		1389	aio_sync_file_range (SV fh, off_t offset, size_t nbytes, UV flags, SV callback = &PL_sv_undef)
		1390	PPCODE:
		1391	{
		1392	int fd = s_fileno_croak (fh, 0);
		1393	dREQ;
		1394
		1395	req->type = EIO_SYNC_FILE_RANGE;
		1396	req->sv1 = newSVsv (fh);
		1397	req->int1 = fd;
		1398	req->offs = offset;
		1399	req->size = nbytes;
		1400	req->int2 = flags;
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_allocate (SV fh, int mode, off_t offset, size_t len, SV callback = &PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	int fd = s_fileno_croak (fh, 0);
		1410	dREQ;
		1411
		1412	req->type = EIO_FALLOCATE;
		1413	req->sv1 = newSVsv (fh);
		1414	req->int1 = fd;
		1415	req->int2 = mode;
		1416	req->offs = offset;
		1417	req->size = len;
		1418
		1419	REQ_SEND;
		1420	}
		1421
		1422	void
		1423	aio_close (SV fh, SV callback = &PL_sv_undef)
		1424	PPCODE:
		1425	{
		1426	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1427	int fd = s_fileno_croak (fh, 0);
		1428	dREQ;
		1429
		1430	if (expect_false (close_fd < 0))
		1431	{
		1432	int pipefd [2];
		1433
		1434	if (
		1435	#ifdef _WIN32
		1436	_pipe (pipefd, 1, _O_BINARY) < 0
		1437	#else
		1438	pipe (pipefd) < 0
		1439	\|\| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1440	#endif
		1441	\|\| close (pipefd [1]) < 0
		1442	)
		1443	abort (); /D/
		1444
		1445	close_fd = pipefd [0];
		1446	}
		1447
		1448	req->type = EIO_DUP2;
		1449	req->int1 = close_fd;
		1450	req->sv2 = newSVsv (fh);
		1451	req->int2 = fd;
		1452
		1453	REQ_SEND;
		1454	}
		1455
		1456	void
		1457	aio_seek (SV fh, SV offset, int whence, SV *callback = &PL_sv_undef)
		1458	PPCODE:
		1459	{
		1460	int fd = s_fileno_croak (fh, 0);
		1461	dREQ;
		1462
		1463	req->type = EIO_SEEK;
		1464	req->sv1 = newSVsv (fh);
		1465	req->int1 = fd;
		1466	req->offs = SvVAL64 (offset);
		1467	req->int2 = whence;
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
1415	aio_read (SV fh, UV offset, UV length, SV8 data, UV dataoffset, SV *callback=&PL_sv_undef)	1473	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback = &PL_sv_undef)
1416	ALIAS:	1474	ALIAS:
1417	aio_read = REQ_READ	1475	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	1476	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$
1420	PPCODE:	1477	PPCODE:
1421	{	1478	{
1422	STRLEN svlen;	1479	STRLEN svlen;
		1480	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	1481	char *svptr = SvPVbyte (data, svlen);
1424		1482	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		1483
1428	if (dataoffset < 0)	1484	if (dataoffset < 0)
1429	dataoffset += svlen;	1485	dataoffset += svlen;
1430		1486
1431	if (dataoffset < 0 \|\| dataoffset > svlen)	1487	if (dataoffset < 0 \|\| dataoffset > svlen)
1432	croak ("data offset outside of string");	1488	croak ("dataoffset outside of data scalar");
1433		1489
1434	if (ix == REQ_WRITE)	1490	if (ix == EIO_WRITE)
1435	{	1491	{
1436	/* write: check length and adjust. */	1492	/* write: check length and adjust. */
1437	if (length < 0 \|\| length + dataoffset > svlen)	1493	if (!SvOK (length) \|\| len + dataoffset > svlen)
1438	length = svlen - dataoffset;	1494	len = svlen - dataoffset;
1439	}	1495	}
1440	else	1496	else
1441	{	1497	{
1442	/* read: grow scalar as necessary */	1498	/* read: check type and grow scalar as necessary */
		1499	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
1443	svptr = SvGROW (data, length + dataoffset + 1);	1500	svptr = sv_grow (data, len + dataoffset + 1);
		1501	else if (SvCUR (data) < len + dataoffset)
		1502	croak ("length + dataoffset outside of scalar, and cannot grow");
1444	}	1503	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		1504
1449	{	1505	{
1450	dREQ;	1506	dREQ;
1451		1507
1452	req->type = ix;	1508	req->type = ix;
1453	req->sv1 = newSVsv (fh);	1509	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1510	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	1511	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1512	req->size = len;
		1513	req->sv2 = SvREFCNT_inc (data);
		1514	req->ptr2 = (char *)svptr + dataoffset;
		1515	req->stroffset = dataoffset;
		1516
		1517	if (!SvREADONLY (data))
		1518	{
		1519	SvREADONLY_on (data);
		1520	req->flags \|= FLAG_SV2_RO_OFF;
		1521	}
		1522
		1523	REQ_SEND;
		1524	}
		1525	}
		1526
		1527	void
		1528	aio_ioctl (SV fh, unsigned long request, SV8 arg, SV *callback = &PL_sv_undef)
		1529	ALIAS:
		1530	aio_ioctl = EIO_IOCTL
		1531	aio_fcntl = EIO_FCNTL
		1532	PPCODE:
		1533	{
		1534	int fd = s_fileno_croak (fh, 0);
		1535	char *svptr;
		1536
		1537	if (SvPOK (arg) \|\| !SvNIOK (arg))
		1538	{
		1539	STRLEN svlen;
		1540	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
		1541	#ifdef IOCPARM_LEN
		1542	STRLEN need = IOCPARM_LEN (request);
		1543	#else
		1544	STRLEN need = 256;
		1545	#endif
		1546
		1547	if (svlen < need)
		1548	svptr = SvGROW (arg, need);
		1549	}
		1550	else
		1551	svptr = (char *)SvIV (arg);
		1552
		1553	{
		1554	dREQ;
		1555
		1556	req->type = ix;
		1557	req->sv1 = newSVsv (fh);
		1558	req->int1 = fd;
		1559	req->int2 = (long)request;
		1560	req->sv2 = SvREFCNT_inc (arg);
		1561	req->ptr2 = svptr;
		1562
		1563	REQ_SEND;
		1564	}
		1565	}
		1566
		1567	void
		1568	aio_readlink (SV8 pathname, SV callback = &PL_sv_undef)
		1569	ALIAS:
		1570	aio_readlink = EIO_READLINK
		1571	aio_realpath = EIO_REALPATH
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->type = ix;
		1577	req_set_path1 (req, pathname);
		1578
		1579	REQ_SEND;
		1580	}
		1581
		1582	void
		1583	aio_sendfile (SV out_fh, SV in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1584	PPCODE:
		1585	{
		1586	int ifd = s_fileno_croak (in_fh , 0);
		1587	int ofd = s_fileno_croak (out_fh, 1);
		1588	dREQ;
		1589
		1590	req->type = EIO_SENDFILE;
		1591	req->sv1 = newSVsv (out_fh);
		1592	req->int1 = ofd;
		1593	req->sv2 = newSVsv (in_fh);
		1594	req->int2 = ifd;
		1595	req->offs = in_offset;
		1596	req->size = length;
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
		1602	aio_readahead (SV fh, off_t offset, size_t length, SV callback = &PL_sv_undef)
		1603	PPCODE:
		1604	{
		1605	int fd = s_fileno_croak (fh, 0);
		1606	dREQ;
		1607
		1608	req->type = EIO_READAHEAD;
		1609	req->sv1 = newSVsv (fh);
		1610	req->int1 = fd;
		1611	req->offs = offset;
		1612	req->size = length;
		1613
		1614	REQ_SEND;
		1615	}
		1616
		1617	void
		1618	aio_stat (SV8 fh_or_path, SV callback = &PL_sv_undef)
		1619	ALIAS:
		1620	aio_stat = EIO_STAT
		1621	aio_lstat = EIO_LSTAT
		1622	aio_statvfs = EIO_STATVFS
		1623	PPCODE:
		1624	{
		1625	dREQ;
		1626
		1627	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1628
		1629	REQ_SEND;
		1630	}
		1631
		1632	void
		1633	stat_xtime ()
		1634	ALIAS:
		1635	stat_atime = 1
		1636	stat_mtime = 2
		1637	stat_ctime = 4
		1638	stat_xtime = 7
		1639	PPCODE:
		1640	EXTEND (SP, 3);
		1641	if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1642	if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1643	if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1644
		1645	void
		1646	stat_xtimensec ()
		1647	ALIAS:
		1648	stat_atimensec = 1
		1649	stat_mtimensec = 2
		1650	stat_ctimensec = 4
		1651	stat_xtimensec = 7
		1652	PPCODE:
		1653	EXTEND (SP, 3);
		1654	if (ix & 1) PUSHs (newSViv (ATIMENSEC));
		1655	if (ix & 2) PUSHs (newSViv (MTIMENSEC));
		1656	if (ix & 4) PUSHs (newSViv (CTIMENSEC));
		1657
		1658	UV
		1659	major (UV dev)
		1660	ALIAS:
		1661	minor = 1
		1662	CODE:
		1663	RETVAL = ix ? minor (dev) : major (dev);
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	UV
		1668	makedev (UV maj, UV min)
		1669	CODE:
		1670	RETVAL = makedev (maj, min);
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	void
		1675	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback = &PL_sv_undef)
		1676	PPCODE:
		1677	{
		1678	dREQ;
		1679
		1680	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1681	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1682	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1683
		1684	REQ_SEND;
		1685	}
		1686
		1687	void
		1688	aio_truncate (SV8 fh_or_path, SV offset, SV *callback = &PL_sv_undef)
		1689	PPCODE:
		1690	{
		1691	dREQ;
		1692
		1693	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1694	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1695
		1696	REQ_SEND;
		1697	}
		1698
		1699	void
		1700	aio_chmod (SV8 fh_or_path, int mode, SV callback = &PL_sv_undef)
		1701	PPCODE:
		1702	{
		1703	dREQ;
		1704
		1705	req->int2 = mode;
		1706	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1707
		1708	REQ_SEND;
		1709	}
		1710
		1711	void
		1712	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback = &PL_sv_undef)
		1713	PPCODE:
		1714	{
		1715	dREQ;
		1716
		1717	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1718	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1719	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1720
		1721	REQ_SEND;
		1722	}
		1723
		1724	void
		1725	aio_readdirx (SV8 pathname, IV flags, SV callback = &PL_sv_undef)
		1726	PPCODE:
		1727	{
		1728	dREQ;
		1729
		1730	req->type = EIO_READDIR;
		1731	req->int1 = flags \| EIO_READDIR_DENTS \| EIO_READDIR_CUSTOM1;
		1732
		1733	if (flags & EIO_READDIR_DENTS)
		1734	req->int1 \|= EIO_READDIR_CUSTOM2;
		1735
		1736	req_set_path1 (req, pathname);
		1737
		1738	REQ_SEND;
		1739	}
		1740
		1741	void
		1742	aio_mkdir (SV8 pathname, int mode, SV callback = &PL_sv_undef)
		1743	PPCODE:
		1744	{
		1745	dREQ;
		1746
		1747	req->type = EIO_MKDIR;
		1748	req->int2 = mode;
		1749	req_set_path1 (req, pathname);
		1750
		1751	REQ_SEND;
		1752	}
		1753
		1754	void
		1755	aio_unlink (SV8 pathname, SV callback = &PL_sv_undef)
		1756	ALIAS:
		1757	aio_unlink = EIO_UNLINK
		1758	aio_rmdir = EIO_RMDIR
		1759	aio_readdir = EIO_READDIR
		1760	PPCODE:
		1761	{
		1762	dREQ;
		1763
		1764	req->type = ix;
		1765	req_set_path1 (req, pathname);
		1766
		1767	REQ_SEND;
		1768	}
		1769
		1770	void
		1771	aio_link (SV8 oldpath, SV8 newpath, SV *callback = &PL_sv_undef)
		1772	ALIAS:
		1773	aio_link = EIO_LINK
		1774	aio_symlink = EIO_SYMLINK
		1775	aio_rename = EIO_RENAME
		1776	PPCODE:
		1777	{
		1778	eio_wd wd2 = 0;
		1779	dREQ;
		1780
		1781	req->type = ix;
		1782	req_set_path1 (req, oldpath);
		1783	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1784	req->int3 = (long)wd2;
		1785
		1786	REQ_SEND;
		1787	}
		1788
		1789	void
		1790	aio_rename2 (SV8 oldpath, SV8 newpath, int flags = 0, SV *callback = &PL_sv_undef)
		1791	PPCODE:
		1792	{
		1793	eio_wd wd2 = 0;
		1794	dREQ;
		1795
		1796	req->type = EIO_RENAME;
		1797	req_set_path1 (req, oldpath);
		1798	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1799	req->int2 = flags;
		1800	req->int3 = (long)wd2;
		1801
		1802	REQ_SEND;
		1803	}
		1804
		1805	void
		1806	aio_mknod (SV8 pathname, int mode, UV dev, SV callback = &PL_sv_undef)
		1807	PPCODE:
		1808	{
		1809	dREQ;
		1810
		1811	req->type = EIO_MKNOD;
		1812	req->int2 = (mode_t)mode;
		1813	req->offs = dev;
		1814	req_set_path1 (req, pathname);
		1815
		1816	REQ_SEND;
		1817	}
		1818
		1819	void
		1820	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1821	ALIAS:
		1822	aio_mtouch = EIO_MTOUCH
		1823	aio_msync = EIO_MSYNC
		1824	PPCODE:
		1825	{
		1826	STRLEN svlen;
		1827	char *svptr = SvPVbyte (data, svlen);
		1828	UV len = SvUV (length);
		1829
		1830	if (flags < 0)
		1831	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1832
		1833	if (offset < 0)
		1834	offset += svlen;
		1835
		1836	if (offset < 0 \|\| offset > svlen)
		1837	croak ("offset outside of scalar");
		1838
		1839	if (!SvOK (length) \|\| len + offset > svlen)
		1840	len = svlen - offset;
		1841
		1842	{
		1843	dREQ;
		1844
		1845	req->type = ix;
		1846	req->sv2 = SvREFCNT_inc (data);
		1847	req->ptr2 = (char *)svptr + offset;
		1848	req->size = len;
		1849	req->int1 = flags;
		1850
		1851	REQ_SEND;
		1852	}
		1853	}
		1854
		1855	void
		1856	aio_mlock (SV8 data, IV offset = 0, SV length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1857	PPCODE:
		1858	{
		1859	STRLEN svlen;
		1860	char *svptr = SvPVbyte (data, svlen);
		1861	UV len = SvUV (length);
		1862
		1863	if (offset < 0)
		1864	offset += svlen;
		1865
		1866	if (offset < 0 \|\| offset > svlen)
		1867	croak ("offset outside of scalar");
		1868
		1869	if (!SvOK (length) \|\| len + offset > svlen)
		1870	len = svlen - offset;
		1871
		1872	{
		1873	dREQ;
		1874
		1875	req->type = EIO_MLOCK;
		1876	req->sv2 = SvREFCNT_inc (data);
		1877	req->ptr2 = (char *)svptr + offset;
		1878	req->size = len;
		1879
		1880	REQ_SEND;
		1881	}
		1882	}
		1883
		1884	void
		1885	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1886	PPCODE:
		1887	{
		1888	dREQ;
		1889
		1890	req->type = EIO_MLOCKALL;
		1891	req->int1 = flags;
		1892
		1893	REQ_SEND;
		1894	}
		1895
		1896	void
		1897	aio_fiemap (SV fh, off_t start, SV length, U32 flags, SV count, SV callback = &PL_sv_undef)
		1898	PPCODE:
		1899	{
		1900	int fd = s_fileno_croak (fh, 0);
		1901	dREQ;
		1902
		1903	req->type = EIO_CUSTOM;
		1904	req->sv1 = newSVsv (fh);
		1905	req->int1 = fd;
		1906
		1907	req->feed = fiemap;
		1908	#if HAVE_FIEMAP
		1909	/* keep our fingers crossed that the next two types are 64 bit */
		1910	req->offs = start;
		1911	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1912	req->int2 = flags;
		1913	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1914	#endif
		1915
		1916	REQ_SEND;
		1917	}
		1918
		1919	void
		1920	aio_slurp (SV pathname, off_t offset, UV length, SV8 data, SV *callback = &PL_sv_undef)
		1921	PPCODE:
		1922	{
		1923	char *svptr = 0;
		1924
		1925	sv_clear_foreign (data);
		1926
		1927	if (length) /* known length, directly read into scalar */
		1928	{
		1929	if (!SvPOK (data) \|\| SvLEN (data) >= SvCUR (data))
		1930	svptr = sv_grow (data, length + 1);
		1931	else if (SvCUR (data) < length)
		1932	croak ("length outside of scalar, and cannot grow");
		1933	else
		1934	svptr = SvPVbyte_nolen (data);
		1935	}
		1936
		1937	{
		1938	dREQ;
		1939
		1940	req->type = EIO_SLURP;
		1941	req_set_path1 (req, pathname);
1456	req->offs = offset;	1942	req->offs = offset;
1457	req->size = length;	1943	req->size = length;
1458	req->sv2 = SvREFCNT_inc (data);	1944	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	1945	req->ptr2 = svptr;
1460	req->stroffset = dataoffset;
1461		1946
1462	if (!SvREADONLY (data))	1947	if (!SvREADONLY (data))
1463	{	1948	{
1464	SvREADONLY_on (data);	1949	SvREADONLY_on (data);
1465	req->flags \|= FLAG_SV1_RO_OFF;	1950	req->flags \|= FLAG_SV2_RO_OFF;
1466	}	1951	}
1467		1952
1468	REQ_SEND;	1953	REQ_SEND;
1469	}	1954	}
1470	}	1955	}
1471		1956
1472	void	1957	void
1473	aio_readlink (SV8 path, SV callback=&PL_sv_undef)	1958	aio_busy (double delay, SV *callback = &PL_sv_undef)
1474	PROTOTYPE: $$;$	1959	PPCODE:
		1960	{
		1961	dREQ;
		1962
		1963	req->type = EIO_BUSY;
		1964	req->nv1 = delay < 0. ? 0. : delay;
		1965
		1966	REQ_SEND;
		1967	}
		1968
		1969	void
		1970	aio_group (SV *callback = &PL_sv_undef)
1475	PPCODE:	1971	PPCODE:
1476	{	1972	{
1477	SV *data;
1478	dREQ;
1479
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;
1484	req->sv1 = newSVsv (path);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488
1489	REQ_SEND;
1490	}
1491
1492	void
1493	aio_sendfile (SV out_fh, SV in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$
1495	PPCODE:
1496	{
1497	dREQ;	1973	dREQ;
1498		1974
1499	req->type = REQ_SENDFILE;	1975	req->type = EIO_GROUP;
1500	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1502	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1504	req->offs = in_offset;
1505	req->size = length;
1506		1976
1507	REQ_SEND;	1977	PUTBACK;
1508	}	1978	req_submit (req);
		1979	SPAGAIN;
1509		1980
		1981	XPUSHs (req_sv (req, aio_grp_stash));
		1982	}
		1983
1510	void	1984	void
1511	aio_readahead (SV fh, UV offset, IV length, SV callback=&PL_sv_undef)	1985	aio_nop (SV *callback = &PL_sv_undef)
1512	PROTOTYPE: $$$;$	1986	ALIAS:
1513	PPCODE:	1987	aio_nop = EIO_NOP
		1988	aio_sync = EIO_SYNC
		1989	PPCODE:
1514	{	1990	{
1515	dREQ;	1991	dREQ;
1516		1992
1517	req->type = REQ_READAHEAD;
1518	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1520	req->offs = offset;
1521	req->size = length;
1522
1523	REQ_SEND;
1524	}
1525
1526	void
1527	aio_stat (SV8 fh_or_path, SV callback=&PL_sv_undef)
1528	ALIAS:
1529	aio_stat = REQ_STAT
1530	aio_lstat = REQ_LSTAT
1531	PPCODE:
1532	{
1533	dREQ;
1534
1535	req->ptr2 = malloc (sizeof (Stat_t));
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags \|= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);
1544
1545	if (SvPOK (fh_or_path))
1546	{
1547	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}
1550	else
1551	{
1552	req->type = REQ_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}
1555
1556	REQ_SEND;
1557	}
1558
1559	void
1560	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback=&PL_sv_undef)
1561	PPCODE:
1562	{
1563	dREQ;
1564
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);
1568
1569	if (SvPOK (fh_or_path))
1570	{
1571	req->type = REQ_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}
1574	else
1575	{
1576	req->type = REQ_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}
1579
1580	REQ_SEND;
1581	}
1582
1583	void
1584	aio_chmod (SV8 fh_or_path, int mode, SV callback=&PL_sv_undef)
1585	PPCODE:
1586	{
1587	dREQ;
1588
1589	req->mode = mode;
1590	req->sv1 = newSVsv (fh_or_path);
1591
1592	if (SvPOK (fh_or_path))
1593	{
1594	req->type = REQ_CHMOD;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}
1597	else
1598	{
1599	req->type = REQ_FCHMOD;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}
1602
1603	REQ_SEND;
1604	}
1605
1606	void
1607	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback=&PL_sv_undef)
1608	PPCODE:
1609	{
1610	dREQ;
1611
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);
1615
1616	if (SvPOK (fh_or_path))
1617	{
1618	req->type = REQ_CHOWN;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}
1621	else
1622	{
1623	req->type = REQ_FCHOWN;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}
1626
1627	REQ_SEND;
1628	}
1629
1630	void
1631	aio_unlink (SV8 pathname, SV callback=&PL_sv_undef)
1632	ALIAS:
1633	aio_unlink = REQ_UNLINK
1634	aio_rmdir = REQ_RMDIR
1635	aio_readdir = REQ_READDIR
1636	PPCODE:
1637	{
1638	dREQ;
1639
1640	req->type = ix;	1993	req->type = ix;
1641	req->sv1 = newSVsv (pathname);
1642	req->ptr1 = SvPVbyte_nolen (req->sv1);
1643		1994
1644	REQ_SEND;	1995	REQ_SEND;
1645	}	1996	}
1646		1997
1647	void
1648	aio_mkdir (SV8 pathname, int mode, SV callback=&PL_sv_undef)
1649	PPCODE:
1650	{
1651	dREQ;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 oldpath, SV8 newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:
1664	aio_link = REQ_LINK
1665	aio_symlink = REQ_SYMLINK
1666	aio_rename = REQ_RENAME
1667	PPCODE:
1668	{
1669	dREQ;
1670
1671	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);
1674	req->sv1 = newSVsv (newpath);
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676
1677	REQ_SEND;
1678	}
1679
1680	void
1681	aio_mknod (SV8 pathname, int mode, UV dev, SV callback=&PL_sv_undef)
1682	PPCODE:
1683	{
1684	dREQ;
1685
1686	req->type = REQ_MKNOD;
1687	req->sv1 = newSVsv (pathname);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);
1689	req->mode = (mode_t)mode;
1690	req->offs = dev;
1691
1692	REQ_SEND;
1693	}
1694
1695	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:
1698	{
1699	dREQ;
1700
1701	req->type = REQ_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;
1703
1704	REQ_SEND;
1705	}
1706
1707	void
1708	aio_group (SV *callback=&PL_sv_undef)
1709	PROTOTYPE: ;$
1710	PPCODE:
1711	{
1712	dREQ;
1713
1714	req->type = REQ_GROUP;
1715
1716	req_send (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1718	}
1719
1720	void
1721	aio_nop (SV *callback=&PL_sv_undef)
1722	PPCODE:
1723	{
1724	dREQ;
1725
1726	req->type = REQ_NOP;
1727
1728	REQ_SEND;
1729	}
1730
1731	int	1998	int
1732	aioreq_pri (int pri = 0)	1999	aioreq_pri (int pri = NO_INIT)
1733	PROTOTYPE: ;$
1734	CODE:	2000	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	2001	RETVAL = next_pri;
1736	if (items > 0)	2002	if (items > 0)
1737	{	2003	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	2004	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	2005	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	2006	next_pri = pri;
1741	}	2007	}
1742	OUTPUT:	2008	OUTPUT:
1743	RETVAL	2009	RETVAL
1744		2010
1745	void	2011	void
1746	aioreq_nice (int nice = 0)	2012	aioreq_nice (int nice = 0)
1747	CODE:	2013	CODE:
1748	nice = next_pri - nice;	2014	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	2015	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	2016	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	2017	next_pri = nice;
1752		2018
1753	void	2019	void
1754	flush ()	2020	flush ()
1755	PROTOTYPE:
1756	CODE:	2021	CODE:
1757	while (nreqs)	2022	while (eio_nreqs ())
1758	{	2023	{
1759	poll_wait ();	2024	poll_wait ();
1760	poll_cb ();	2025	poll_cb ();
1761	}	2026	}
1762		2027
1763	int	2028	int
1764	poll()	2029	poll ()
1765	PROTOTYPE:
1766	CODE:	2030	CODE:
1767	poll_wait ();	2031	poll_wait ();
1768	RETVAL = poll_cb ();	2032	RETVAL = poll_cb ();
1769	OUTPUT:	2033	OUTPUT:
1770	RETVAL	2034	RETVAL
1771		2035
1772	int	2036	int
1773	poll_fileno()	2037	poll_fileno ()
1774	PROTOTYPE:
1775	CODE:	2038	CODE:
1776	RETVAL = respipe [0];	2039	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	2040	OUTPUT:
1778	RETVAL	2041	RETVAL
1779		2042
1780	int	2043	int
1781	poll_cb(...)	2044	poll_cb (...)
1782	PROTOTYPE:	2045	PROTOTYPE:
1783	CODE:	2046	CODE:
1784	RETVAL = poll_cb ();	2047	RETVAL = poll_cb ();
1785	OUTPUT:	2048	OUTPUT:
1786	RETVAL	2049	RETVAL
1787		2050
1788	void	2051	void
1789	poll_wait()	2052	poll_wait ()
1790	PROTOTYPE:
1791	CODE:	2053	CODE:
1792	poll_wait ();	2054	poll_wait ();
1793		2055
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V \| G_NOARGS \| G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	2056	int
1832	nreqs()	2057	nreqs ()
1833	PROTOTYPE:
1834	CODE:	2058	CODE:
1835	RETVAL = nreqs;	2059	RETVAL = eio_nreqs ();
1836	OUTPUT:	2060	OUTPUT:
1837	RETVAL	2061	RETVAL
1838		2062
1839	int	2063	int
1840	nready()	2064	nready ()
1841	PROTOTYPE:
1842	CODE:	2065	CODE:
1843	RETVAL = get_nready ();	2066	RETVAL = eio_nready ();
1844	OUTPUT:	2067	OUTPUT:
1845	RETVAL	2068	RETVAL
1846		2069
1847	int	2070	int
1848	npending()	2071	npending ()
1849	PROTOTYPE:
1850	CODE:	2072	CODE:
1851	RETVAL = get_npending ();	2073	RETVAL = eio_npending ();
1852	OUTPUT:	2074	OUTPUT:
1853	RETVAL	2075	RETVAL
1854		2076
1855	int	2077	int
1856	nthreads()	2078	nthreads ()
1857	PROTOTYPE:
1858	CODE:	2079	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	2080	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	2081	OUTPUT:
1863	RETVAL	2082	RETVAL
1864		2083
		2084	int
		2085	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2086	CODE:
		2087	RETVAL = posix_fadvise (fh, offset, length, advice);
		2088	OUTPUT:
		2089	RETVAL
		2090
		2091	IV
		2092	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2093	CODE:
		2094	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2095	OUTPUT:
		2096	RETVAL
		2097
		2098	void
		2099	mmap (SV scalar, STRLEN length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
		2100	PPCODE:
		2101	sv_clear_foreign (scalar);
		2102	{
		2103	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2104	void addr = (void )mmap (0, length, prot, flags, fd, offset);
		2105	if (addr == (void *)-1)
		2106	XSRETURN_NO;
		2107
		2108	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2109
		2110	if (!(prot & PROT_WRITE))
		2111	SvREADONLY_on (scalar);
		2112
		2113	XSRETURN_YES;
		2114	}
		2115
		2116	void
		2117	munmap (SV *scalar)
		2118	CODE:
		2119	sv_clear_foreign (scalar);
		2120
		2121	SV *
		2122	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2123	CODE:
		2124	{
		2125	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2126	void *new;
		2127
		2128	if (!mg \|\| SvPVX (scalar) != mg->mg_ptr)
		2129	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2130
		2131	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2132
		2133	RETVAL = &PL_sv_no;
		2134
		2135	if (new != (void *)-1)
		2136	{
		2137	RETVAL = new == (void *)mg->mg_ptr
		2138	? newSVpvn ("0 but true", 10)
		2139	: &PL_sv_yes;
		2140
		2141	mg->mg_ptr = (char *)new;
		2142	mg->mg_obj = (SV *)new_length;
		2143
		2144	SvPVX (scalar) = mg->mg_ptr;
		2145	SvCUR_set (scalar, new_length);
		2146	}
		2147	}
		2148	OUTPUT:
		2149	RETVAL
		2150
		2151	int
		2152	madvise (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
		2153	ALIAS:
		2154	mprotect = 1
		2155	CODE:
		2156	{
		2157	STRLEN svlen;
		2158	void *addr = SvPVbyte (scalar, svlen);
		2159	STRLEN len = SvUV (length);
		2160
		2161	if (offset < 0)
		2162	offset += svlen;
		2163
		2164	if (offset < 0 \|\| offset > svlen)
		2165	croak ("offset outside of scalar");
		2166
		2167	if (!SvOK (length) \|\| len + offset > svlen)
		2168	len = svlen - offset;
		2169
		2170	addr = (void *)(((intptr_t)addr) + offset);
		2171	eio_page_align (&addr, &len);
		2172
		2173	switch (ix)
		2174	{
		2175	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2176	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2177	}
		2178	}
		2179	OUTPUT:
		2180	RETVAL
		2181
		2182	int
		2183	munlock (SV scalar, STRLEN offset = 0, SV length = &PL_sv_undef)
		2184	CODE:
		2185	{
		2186	STRLEN svlen;
		2187	void *addr = SvPVbyte (scalar, svlen);
		2188	size_t len = SvUV (length);
		2189
		2190	if (offset < 0)
		2191	offset += svlen;
		2192
		2193	if (offset < 0 \|\| offset > svlen)
		2194	croak ("offset outside of scalar");
		2195
		2196	if (!SvOK (length) \|\| len + offset > svlen)
		2197	len = svlen - offset;
		2198
		2199	addr = (void *)(((intptr_t)addr) + offset);
		2200	eio_page_align (&addr, &len);
		2201	#if _POSIX_MEMLOCK_RANGE
		2202	RETVAL = munlock (addr, len);
		2203	#else
		2204	RETVAL = EIO_ENOSYS ();
		2205	#endif
		2206	}
		2207	OUTPUT:
		2208	RETVAL
		2209
		2210	int
		2211	munlockall ()
		2212	CODE:
		2213	#if _POSIX_MEMLOCK
		2214	munlockall ();
		2215	#else
		2216	RETVAL = EIO_ENOSYS ();
		2217	#endif
		2218	OUTPUT:
		2219	RETVAL
		2220
		2221	int
		2222	splice (aio_rfd rfh, SV off_in, aio_wfd wfh, SV off_out, size_t length, unsigned int flags)
		2223	CODE:
		2224	{
		2225	#if HAVE_LINUX_SPLICE
		2226	loff_t off_in_, off_out_;
		2227	RETVAL = splice (
		2228	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2229	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2230	length, flags
		2231	);
		2232	#else
		2233	RETVAL = EIO_ENOSYS ();
		2234	#endif
		2235	}
		2236	OUTPUT:
		2237	RETVAL
		2238
		2239	int
		2240	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2241	CODE:
		2242	#if HAVE_LINUX_SPLICE
		2243	RETVAL = tee (rfh, wfh, length, flags);
		2244	#else
		2245	RETVAL = EIO_ENOSYS ();
		2246	#endif
		2247	OUTPUT:
		2248	RETVAL
		2249
		2250	int
		2251	pipesize (aio_rfd rfh, int new_size = -1)
		2252	PROTOTYPE: $;$
		2253	CODE:
		2254	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2255	if (new_size >= 0)
		2256	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2257	else
		2258	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2259	#else
		2260	errno = ENOSYS;
		2261	RETVAL = -1;
		2262	#endif
		2263	OUTPUT:
		2264	RETVAL
		2265
		2266	void
		2267	pipe2 (int flags = 0)
		2268	PROTOTYPE: ;$
		2269	PPCODE:
		2270	{
		2271	int fd[2];
		2272	int res;
		2273
		2274	if (flags)
		2275	#if HAVE_PIPE2
		2276	res = pipe2 (fd, flags);
		2277	#else
		2278	res = (errno = ENOSYS, -1);
		2279	#endif
		2280	else
		2281	res = pipe (fd);
		2282
		2283	if (!res)
		2284	{
		2285	EXTEND (SP, 2);
		2286	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2287	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2288	}
		2289	}
		2290
		2291	void
		2292	eventfd (unsigned int initval = 0, int flags = 0)
		2293	PPCODE:
		2294	{
		2295	int fd;
		2296	#if HAVE_EVENTFD
		2297	fd = eventfd (initval, flags);
		2298	#else
		2299	fd = (errno = ENOSYS, -1);
		2300	#endif
		2301
		2302	XPUSHs (newmortalFH (fd, O_RDWR));
		2303	}
		2304
		2305	void
		2306	timerfd_create (int clockid, int flags = 0)
		2307	PPCODE:
		2308	{
		2309	int fd;
		2310	#if HAVE_TIMERFD
		2311	fd = timerfd_create (clockid, flags);
		2312	#else
		2313	fd = (errno = ENOSYS, -1);
		2314	#endif
		2315
		2316	XPUSHs (newmortalFH (fd, O_RDWR));
		2317	}
		2318
		2319	void
		2320	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2321	PPCODE:
		2322	{
		2323	int fd = s_fileno_croak (fh, 0);
		2324	#if HAVE_TIMERFD
		2325	int res;
		2326	struct itimerspec its, ots;
		2327
		2328	ts_set (&its.it_interval, interval);
		2329	ts_set (&its.it_value , value);
		2330	res = timerfd_settime (fd, flags, &its, &ots);
		2331
		2332	if (!res)
		2333	{
		2334	EXTEND (SP, 2);
		2335	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2336	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2337	}
		2338	#else
		2339	errno = ENOSYS;
		2340	#endif
		2341	}
		2342
		2343	void
		2344	timerfd_gettime (SV *fh)
		2345	PPCODE:
		2346	{
		2347	int fd = s_fileno_croak (fh, 0);
		2348	#if HAVE_TIMERFD
		2349	int res;
		2350	struct itimerspec ots;
		2351	res = timerfd_gettime (fd, &ots);
		2352
		2353	if (!res)
		2354	{
		2355	EXTEND (SP, 2);
		2356	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2357	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2358	}
		2359	#else
		2360	errno = ENOSYS;
		2361	#endif
		2362	}
		2363
		2364	UV
		2365	get_fdlimit ()
		2366	CODE:
		2367	#if HAVE_RLIMITS
		2368	struct rlimit rl;
		2369	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2370	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2371	#endif
		2372	XSRETURN_UNDEF;
		2373	OUTPUT:
		2374	RETVAL
		2375
		2376	void
		2377	min_fdlimit (UV limit = 0x7fffffffU)
		2378	CODE:
		2379	{
		2380	#if HAVE_RLIMITS
		2381	struct rlimit rl;
		2382	rlim_t orig_rlim_max;
		2383	UV bit;
		2384
		2385	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2386	goto fail;
		2387
		2388	if (rl.rlim_cur == RLIM_INFINITY)
		2389	XSRETURN_YES;
		2390
		2391	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2392
		2393	if (rl.rlim_cur < limit)
		2394	{
		2395	rl.rlim_cur = limit;
		2396
		2397	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2398	rl.rlim_max = rl.rlim_cur;
		2399	}
		2400
		2401	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2402	XSRETURN_YES;
		2403
		2404	if (errno == EPERM)
		2405	{
		2406	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2407	/* our limit overflows a system-wide limit */
		2408	/* try an adaptive algorithm, but do not lower the hardlimit */
		2409	rl.rlim_max = 0;
		2410	for (bit = 0x40000000U; bit; bit >>= 1)
		2411	{
		2412	rl.rlim_max \|= bit;
		2413	rl.rlim_cur = rl.rlim_max;
		2414
		2415	/* nevr decrease the hard limit */
		2416	if (rl.rlim_max < orig_rlim_max)
		2417	break;
		2418
		2419	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2420	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2421	}
		2422
		2423	/* now, raise the soft limit to the max permitted */
		2424	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2425	{
		2426	rl.rlim_cur = rl.rlim_max;
		2427	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2428	errno = EPERM;
		2429	}
		2430	}
		2431	#endif
		2432	fail:
		2433	XSRETURN_UNDEF;
		2434	}
		2435
		2436	void _on_next_submit (SV *cb)
		2437	CODE:
		2438	SvREFCNT_dec (on_next_submit);
		2439	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2440
1865	PROTOTYPES: DISABLE	2441	PROTOTYPES: DISABLE
		2442
		2443	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2444
		2445	BOOT:
		2446	{
		2447	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2448	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2449	}
		2450
		2451	void
		2452	DESTROY (SV *self)
		2453	CODE:
		2454	{
		2455	aio_wd wd = SvAIO_WD (self);
		2456	#if HAVE_AT
		2457	{
		2458	SV *callback = &PL_sv_undef;
		2459	dREQ; /* clobbers next_pri :/ */
		2460	next_pri = req->pri; /* restore next_pri */
		2461	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2462	req->type = EIO_WD_CLOSE;
		2463	req->wd = wd;
		2464	REQ_SEND;
		2465	}
		2466	#else
		2467	eio_wd_close_sync (wd);
		2468	#endif
		2469	}
1866		2470
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2471	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		2472
1869	void	2473	void
1870	cancel (aio_req_ornot req)	2474	cancel (aio_req_ornot req)
1871	CODE:	2475	CODE:
1872	req_cancel (req);	2476	eio_cancel (req);
1873		2477
1874	void	2478	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2479	cb (aio_req_ornot req, SV *callback = NO_INIT)
1876	CODE:	2480	PPCODE:
		2481	{
		2482	if (GIMME_V != G_VOID)
		2483	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2484
		2485	if (items > 1)
		2486	{
		2487	SV *cb_cv = get_cb (callback);
		2488
1877	SvREFCNT_dec (req->callback);	2489	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	2490	req->callback = SvREFCNT_inc (cb_cv);
		2491	}
		2492	}
1879		2493
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2494	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		2495
1882	void	2496	void
1883	add (aio_req grp, ...)	2497	add (aio_req grp, ...)
1884	PPCODE:	2498	PPCODE:
1885	{	2499	{
1886	int i;	2500	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		2501
1892	if (grp->int1 == 2)	2502	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2503	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		2504
1895	for (i = 1; i < items; ++i )	2505	for (i = 1; i < items; ++i )
1896	{	2506	{
		2507	aio_req req;
		2508
1897	if (GIMME_V != G_VOID)	2509	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2510	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		2511
1900	req = SvAIO_REQ (ST (i));	2512	req = SvAIO_REQ (ST (i));
1901		2513
1902	if (req)	2514	if (req)
1903	{	2515	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	2516	}
1916	}	2517	}
1917		2518
1918	void	2519	void
1919	cancel_subs (aio_req_ornot req)	2520	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	2529	AV *av;
1929		2530
1930	grp->errorno = errno;	2531	grp->errorno = errno;
1931		2532
1932	av = newAV ();	2533	av = newAV ();
		2534	av_extend (av, items - 1);
1933		2535
1934	for (i = 1; i < items; ++i )	2536	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	2537	av_push (av, newSVsv (ST (i)));
1936		2538
1937	SvREFCNT_dec (grp->sv1);	2539	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	2546	grp->errorno = errorno;
1945		2547
1946	void	2548	void
1947	limit (aio_req grp, int limit)	2549	limit (aio_req grp, int limit)
1948	CODE:	2550	CODE:
1949	grp->int2 = limit;	2551	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		2552
1952	void	2553	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	2554	feed (aio_req grp, SV *callback = &PL_sv_undef)
1954	CODE:	2555	CODE:
1955	{	2556	{
1956	SvREFCNT_dec (grp->sv2);	2557	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	2558	grp->sv2 = newSVsv (callback);
		2559	grp->feed = aio_grp_feed;
1958		2560
1959	if (grp->int2 <= 0)	2561	if (grp->int2 <= 0)
1960	grp->int2 = 2;	2562	grp->int2 = 2;
1961		2563
1962	aio_grp_feed (grp);	2564	eio_grp_limit (grp, grp->int2);
1963	}	2565	}
1964		2566

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs. Revision 1.262 by root, Sun Aug 12 05:21:35 2018 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs.
Revision 1.262 by root, Sun Aug 12 05:21:35 2018 UTC