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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.261 by root, Tue Jul 24 19:32:20 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
		9	#if !defined mg_findext
		10	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		11	#endif
8		12
9	#include <stddef.h>	13	#include <stddef.h>
10	#include <stdlib.h>	14	#include <stdlib.h>
11	#include <errno.h>	15	#include <errno.h>
12	#include <sys/types.h>	16	#include <sys/types.h>
		17	#include <sys/socket.h>
13	#include <sys/stat.h>	18	#include <sys/stat.h>
14	#include <limits.h>	19	#include <limits.h>
15	#include <fcntl.h>	20	#include <fcntl.h>
16	#include <sched.h>	21	#include <sched.h>
17		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
18	#ifdef _WIN32	50	#ifdef _WIN32
19		51
20	# define SIGIO 0	52	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	53
22	#undef malloc	54	#undef malloc
23	#undef free	55	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	56	#undef open
27	# undef read	57	#undef read
28	# undef write	58	#undef write
29	# undef send	59	#undef send
30	# undef recv	60	#undef recv
31	# undef stat	61	#undef stat
		62	#undef lstat
32	# undef fstat	63	#undef fstat
33	# define lstat stat
34	# undef truncate	64	#undef truncate
35	# undef ftruncate	65	#undef ftruncate
36	# undef open	66	#undef open
		67	#undef link
37	# undef close	68	#undef close
38	# undef unlink	69	#undef unlink
		70	#undef mkdir
39	# undef rmdir	71	#undef rmdir
40	# undef rename	72	#undef rename
41	# undef lseek	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
42		83
43	# define chown(a,b,c) (errno = ENOSYS, -1)	84	#define EIO_STRUCT_STAT struct _stati64
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	85	#define EIO_STRUCT_STATI64
45	# define fchmod(a,b) (errno = ENOSYS, -1)
46	# define symlink(a,b) (errno = ENOSYS, -1)
47	# define readlink(a,b,c) (errno = ENOSYS, -1)
48	# define mknod(a,b,c) (errno = ENOSYS, -1)
49	# define truncate(a,b) (errno = ENOSYS, -1)
50	# define ftruncate(fd,o) chsize ((fd), (o))
51	# define fsync(fd) _commit (fd)
52	# define opendir(fd) (errno = ENOSYS, 0)
53	# define readdir(fd) (errno = ENOSYS, -1)
54	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)
56		86
57	#else	87	#else
58		88
59	# include "autoconf/config.h"
60	# include <sys/time.h>	89	#include <sys/time.h>
61	# include <sys/select.h>	90	#include <sys/select.h>
62	# include <unistd.h>	91	#include <unistd.h>
63	# include <utime.h>	92	#include <utime.h>
64	# include <signal.h>	93	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		94
67	#endif	95	#define EIO_STRUCT_STAT Stat_t
68		96
69	#if HAVE_SENDFILE	97	#endif
70	# if __linux	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 "libeio/config.h"
		113
		114	#include "schmorp.h"
		115
		116	#if HAVE_EVENTFD
71	# include <sys/sendfile.h>	117	# include <sys/eventfd.h>
72	# elif __freebsd	118	#endif
73	# include <sys/socket.h>	119
		120	#if HAVE_TIMERFD
74	# include <sys/uio.h>	121	# include <sys/timerfd.h>
75	# elif __hpux	122	#endif
		123
		124	#if HAVE_RLIMITS
		125	#include <sys/time.h>
76	# include <sys/socket.h>	126	#include <sys/resource.h>
77	# elif __solaris /* not yet */	127	#endif
78	# include <sys/sendfile.h>	128
		129	typedef SV SV8; /* byte-sv, used for argument-checking */
		130	typedef int aio_rfd; /* read file desriptor */
		131	typedef int aio_wfd; /* write file descriptor */
		132
		133	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		134
		135	#define EIO_REQ_MEMBERS \
		136	SV *callback; \
		137	SV *sv1, *sv2; \
		138	SV *sv3, *sv4; \
		139	STRLEN stroffset; \
		140	SV *self;
		141
		142	#define EIO_NO_WRAPPERS 1
		143
		144	#include "libeio/eio.h"
		145
		146	static int req_invoke (eio_req *req);
		147	#define EIO_FINISH(req) req_invoke (req)
		148	static void req_destroy (eio_req *grp);
		149	#define EIO_DESTROY(req) req_destroy (req)
		150
		151	#include "libeio/eio.c"
		152
		153	#if !HAVE_POSIX_FADVISE
		154	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		155	#endif
		156
		157	#if !HAVE_POSIX_MADVISE
		158	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		159	#endif
		160
		161	#ifndef MAP_ANONYMOUS
		162	# ifdef MAP_ANON
		163	# define MAP_ANONYMOUS MAP_ANON
79	# else	164	# else
80	# error sendfile support requested but not available	165	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81	# endif	166	# endif
82	#endif	167	#endif
83		168
84	/* number of seconds after which idle threads exit */	169	#ifndef makedev
85	#define IDLE_TIMEOUT 10	170	# define makedev(maj,min) (((maj) << 8) | (min))
86
87	/* used for struct dirent, AIX doesn't provide it */
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif	171	#endif
91		172	#ifndef major
92	/* buffer size for various temporary buffers */	173	# define major(dev) ((dev) >> 8)
93	#define AIO_BUFSIZE 65536
94
95	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8
97	# define SvVAL64 SvIV
98	#else
99	# define SvVAL64 SvNV
100	#endif	174	#endif
		175	#ifndef minor
		176	# define minor(dev) ((dev) & 0xff)
		177	#endif
101		178
102	#define dBUF \	179	#if PAGESIZE <= 0
103	char *aio_buf; \	180	# define PAGESIZE sysconf (_SC_PAGESIZE)
104	X_LOCK (wrklock); \	181	#endif
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	182
106	X_UNLOCK (wrklock); \	183	/*****************************************************************************/
107	if (!aio_buf) \	184
		185	#if !_POSIX_MAPPED_FILES
		186	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
		187	# define munmap(addr,length) EIO_ENOSYS ()
		188	#endif
		189
		190	#if !_POSIX_MEMORY_PROTECTION
		191	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		192	#endif
		193
		194	#if !MREMAP_MAYMOVE
		195	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		196	#endif
		197
		198	#define FOREIGN_MAGIC PERL_MAGIC_ext
		199
		200	static int ecb_cold
		201	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		202	{
		203	int old_errno = errno;
		204	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		205	errno = old_errno;
		206
		207	mg->mg_obj = 0; /* just in case */
		208
		209	SvREADONLY_off (sv);
		210
		211	if (SvPVX (sv) != mg->mg_ptr)
		212	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		213
		214	SvCUR_set (sv, 0);
		215	SvPVX (sv) = 0;
		216	SvOK_off (sv);
		217
108	return -1;	218	return 0;
		219	}
109		220
110	typedef SV SV8; /* byte-sv, used for argument-checking */	221	static MGVTBL mmap_vtbl = {
111		222	0, 0, 0, 0, mmap_free
112	enum {
113	REQ_QUIT,
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};	223	};
129		224
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	225	static int ecb_cold
131	#define AIO_GRP_KLASS "IO::AIO::GRP"	226	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
132
133	typedef struct aio_cb
134	{	227	{
135	struct aio_cb *volatile next;	228	free (mg->mg_ptr);
		229	mg->mg_obj = 0; /* just in case */
136		230
137	SV *callback;	231	SvREADONLY_off (sv);
138	SV *sv1, *sv2;
139	void *ptr1, *ptr2;
140	off_t offs;
141	size_t size;
142	ssize_t result;
143	double nv1, nv2;
144		232
145	STRLEN stroffset;	233	if (SvPVX (sv) != mg->mg_ptr)
146	int type;	234	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150		235
151	unsigned char flags;	236	SvCUR_set (sv, 0);
152	unsigned char pri;	237	SvPVX (sv) = 0;
		238	SvOK_off (sv);
153		239
154	SV *self; /* the perl counterpart of this request, if any */	240	return 0;
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	241	}
156	} aio_cb;
157		242
158	enum {	243	static MGVTBL sysfree_vtbl = {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */	244	0, 0, 0, 0, sysfree_free
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};	245	};
163		246
164	typedef aio_cb *aio_req;	247	/*****************************************************************************/
165	typedef aio_cb *aio_req_ornot;
166		248
167	enum {	249	/* helper: set scalar to foreign ptr with custom free */
168	PRI_MIN = -4,	250	static void
169	PRI_MAX = 4,	251	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
170
171	DEFAULT_PRI = 0,
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{	252	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	253	sv_force_normal (sv);
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187		254
188	static thread_t main_tid;	255	/* we store the length in mg_obj, as namlen is I32 :/ */
189	static int main_sig;	256	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
190	static int block_sig_level;	257	->mg_obj = (SV *)length;
191		258
192	void block_sig ()	259	SvUPGRADE (sv, SVt_PV); /* nop... */
193	{
194	sigset_t ss;
195		260
196	if (block_sig_level++)	261	if (SvLEN (sv))
		262	Safefree (SvPVX (sv));
		263
		264	SvPVX (sv) = (char *)addr;
		265	SvCUR_set (sv, length);
		266	SvLEN_set (sv, 0);
		267	SvPOK_only (sv);
		268	}
		269
		270	static void
		271	sv_clear_foreign (SV *sv)
		272	{
		273	/* todo: iterate over magic and only free ours, but of course */
		274	/* the perl5porters will call that (correct) behaviour buggy */
		275	sv_unmagic (sv, FOREIGN_MAGIC);
		276	}
		277
		278	/*****************************************************************************/
		279
		280	/* defines all sorts of constants to 0 unless they are already defined */
		281	/* also provides const_iv_ and const_niv_ macros for them */
		282	#include "def0.h"
		283
		284	/*****************************************************************************/
		285
		286	static void
		287	fiemap (eio_req *req)
		288	{
		289	req->result = -1;
		290
		291	#if HAVE_FIEMAP
		292	/* assume some c99 */
		293	struct fiemap *fiemap = 0;
		294	size_t end_offset;
		295	int count = req->int3;
		296
		297	req->flags |= EIO_FLAG_PTR1_FREE;
		298
		299	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		300	/* increase in 3.5kb steps */
		301	if (count < 0)
		302	count = 8;
		303
		304	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		305	errno = ENOMEM;
		306	if (!fiemap)
197	return;	307	return;
198		308
199	if (!main_sig)	309	req->ptr1 = fiemap;
		310
		311	fiemap->fm_start = req->offs;
		312	fiemap->fm_length = req->size;
		313	fiemap->fm_flags = req->int2;
		314	fiemap->fm_extent_count = count;
		315
		316	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
200	return;	317	return;
201		318
202	sigemptyset (&ss);	319	if (req->int3 >= 0 /* not autosizing */
203	sigaddset (&ss, main_sig);	320	|| !fiemap->fm_mapped_extents /* no more extents */
204	pthread_sigmask (SIG_BLOCK, &ss, 0);	321	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
205	}	322	goto done;
206		323
207	void unblock_sig ()	324	/* else we have to loop -
208	{	325	* it would be tempting (actually I tried that first) to just query the
209	sigset_t ss;	326	* number of extents needed, but linux often feels like not returning all
		327	* extents, without telling us it left any out. this complicates
		328	* this quite a bit.
		329	*/
210		330
211	if (--block_sig_level)	331	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
212	return;
213		332
214	if (!main_sig)	333	for (;;)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224	static unsigned int started, idle, wanted;
225
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{	334	{
247	closedir (wrk->dirp);	335	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
248	wrk->dirp = 0;	336	char scratch[3072];
249	}	337	struct fiemap *incmap = (struct fiemap *)scratch;
250		338
251	if (wrk->dbuf)	339	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
252	{	340	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
253	free (wrk->dbuf);	341	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
254	wrk->dbuf = 0;	342	incmap->fm_flags = fiemap->fm_flags;
255	}	343	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
256	}
257		344
258	static void worker_free (worker *wrk)	345	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe_osf [2], respipe [2] = { -1, -1 };
270
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;	346	return;
353		347
354	--q->size;	348	if (!incmap->fm_mapped_extents)
		349	goto done;
355		350
356	for (pri = NUM_PRI; pri--; )	351	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
357	{	352	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
358	aio_req req = q->qs[pri];	353	errno = ENOMEM;
359
360	if (req)	354	if (!fiemap)
		355	return;
		356
		357	req->ptr1 = fiemap;
		358
		359	for (count = 0; count < incmap->fm_mapped_extents; ++count)
361	{	360	{
362	if (!(q->qs[pri] = req->next))	361	struct fiemap_extent *e = incmap->fm_extents + count;
363	q->qe[pri] = 0;
364		362
365	return req;	363	if (e->fe_logical + e->fe_length >= end_offset)
		364	goto done;
		365
		366	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		367
		368	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		369	goto done;
		370
366	}	371	}
367	}	372	}
368		373
369	abort ();	374	done:
370	}	375	req->result = 0;
371		376
372	static int poll_cb ();	377	#else
373	static int req_invoke (aio_req req);	378	errno = ENOSYS;
		379	#endif
		380	}
		381
		382	/*****************************************************************************/
		383
		384	enum {
		385	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		386	};
		387
		388	typedef eio_req *aio_req;
		389	typedef eio_req *aio_req_ornot;
		390	typedef eio_wd aio_wd;
		391
		392	static SV *on_next_submit;
		393	static int next_pri = EIO_PRI_DEFAULT;
		394	static int max_outstanding;
		395
		396	static s_epipe respipe;
		397
374	static void req_destroy (aio_req req);	398	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	399	static void req_cancel (aio_req req);
376		400
		401	static void
		402	want_poll (void)
		403	{
		404	/* write a dummy byte to the pipe so fh becomes ready */
		405	s_epipe_signal (&respipe);
		406	}
		407
		408	static void
		409	done_poll (void)
		410	{
		411	/* read any signals sent by the worker threads */
		412	s_epipe_drain (&respipe);
		413	}
		414
377	/* must be called at most once */	415	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	416	static SV *
		417	req_sv (aio_req req, HV *stash)
379	{	418	{
380	if (!req->self)	419	if (!req->self)
381	{	420	{
382	req->self = (SV *)newHV ();	421	req->self = (SV *)newHV ();
383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	422	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384	}	423	}
385		424
386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	425	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387	}	426	}
388		427
389	static aio_req SvAIO_REQ (SV *sv)	428	static SV *
		429	newSVaio_wd (aio_wd wd)
		430	{
		431	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		432	}
		433
		434	static aio_req
		435	SvAIO_REQ (SV *sv)
390	{	436	{
391	MAGIC *mg;	437	MAGIC *mg;
392		438
393	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	439	if (!SvROK (sv)
		440	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		441	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		442	&& SvSTASH (SvRV (sv)) != aio_req_stash
		443	&& !sv_derived_from (sv, "IO::AIO::REQ")))
394	croak ("object of class " AIO_REQ_KLASS " expected");	444	croak ("object of class IO::AIO::REQ expected");
395		445
396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	446	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397		447
398	return mg ? (aio_req)mg->mg_ptr : 0;	448	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	449	}
400		450
		451	static aio_wd
		452	SvAIO_WD (SV *sv)
		453	{
		454	if (!SvROK (sv)
		455	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		456	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		457	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		458
		459	return (aio_wd)(long)SvIVX (SvRV (sv));
		460	}
		461
		462	static SV *
		463	newmortalFH (int fd, int flags)
		464	{
		465	if (fd < 0)
		466	return &PL_sv_undef;
		467
		468	GV *gv = (GV *)sv_newmortal ();
		469	char sym[64];
		470	int symlen;
		471
		472	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		473	gv_init (gv, aio_stash, sym, symlen, 0);
		474
		475	symlen = snprintf (
		476	sym,
		477	sizeof (sym),
		478	"%s&=%d",
		479	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		480	fd
		481	);
		482
		483	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		484	? (SV *)gv : &PL_sv_undef;
		485	}
		486
		487	static void
401	static void aio_grp_feed (aio_req grp)	488	aio_grp_feed (aio_req grp)
402	{	489	{
403	block_sig ();	490	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	491	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	492	dSP;
412		493
413	ENTER;	494	ENTER;
414	SAVETMPS;	495	SAVETMPS;
415	PUSHMARK (SP);	496	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	497	XPUSHs (req_sv (grp, aio_grp_stash));
417	PUTBACK;	498	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	499	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	500	SPAGAIN;
420	FREETMPS;	501	FREETMPS;
421	LEAVE;	502	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	503	}
432
433	unblock_sig ();
434	}	504	}
435		505
436	static void aio_grp_dec (aio_req grp)	506	static void
		507	req_submit (eio_req *req)
437	{	508	{
438	--grp->size;	509	eio_submit (req);
439		510
440	/* call feeder, if applicable */	511	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	512	{
446	block_sig ();	513	dSP;
		514	SV *cb = sv_2mortal (on_next_submit);
447		515
448	if (!req_invoke (grp))	516	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		517
455	req_destroy (grp);	518	PUSHMARK (SP);
456	unblock_sig ();	519	PUTBACK;
		520	call_sv (cb, G_DISCARD | G_EVAL);
457	}	521	}
458	}	522	}
459		523
		524	static int
460	static int req_invoke (aio_req req)	525	req_invoke (eio_req *req)
461	{	526	{
462	dSP;
463
464	if (req->flags & FLAG_SV2_RO_OFF)	527	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	528	SvREADONLY_off (req->sv2);
466		529
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	530	if (!EIO_CANCELLED (req) && req->callback)
468	{	531	{
		532	dSP;
		533	static SV *sv_result_cache; /* caches the result integer SV */
		534	SV *sv_result;
		535
469	ENTER;	536	ENTER;
470	SAVETMPS;	537	SAVETMPS;
471	PUSHMARK (SP);	538	PUSHMARK (SP);
472	EXTEND (SP, 1);	539	EXTEND (SP, 1);
473		540
		541	/* do not recreate the result IV from scratch each time */
		542	if (expect_true (sv_result_cache))
		543	{
		544	sv_result = sv_result_cache; sv_result_cache = 0;
		545	SvIV_set (sv_result, req->result);
		546	SvIOK_only (sv_result);
		547	}
		548	else
		549	{
		550	sv_result = newSViv (req->result);
		551	SvREADONLY_on (sv_result);
		552	}
		553
474	switch (req->type)	554	switch (req->type)
475	{	555	{
		556	case EIO_WD_OPEN:
		557	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		558	break;
		559
476	case REQ_READDIR:	560	case EIO_READDIR:
477	{	561	{
478	SV *rv = &PL_sv_undef;	562	SV *rv = &PL_sv_undef;
479		563
480	if (req->result >= 0)	564	if (req->result >= 0)
481	{	565	{
482	int i;	566	int i;
483	char *buf = req->ptr2;	567	char *names = (char *)req->ptr2;
		568	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484	AV *av = newAV ();	569	AV *av = newAV ();
485		570
486	av_extend (av, req->result - 1);	571	av_extend (av, req->result - 1);
487		572
488	for (i = 0; i < req->result; ++i)	573	for (i = 0; i < req->result; ++i)
489	{	574	{
490	SV *sv = newSVpv (buf, 0);	575	if (req->int1 & EIO_READDIR_DENTS)
		576	{
		577	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491		578
		579	if (req->int1 & EIO_READDIR_CUSTOM2)
		580	{
		581	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		582	AV *avent = newAV ();
		583
		584	av_extend (avent, 2);
		585
		586	if (!sv_type [ent->type])
		587	{
		588	sv_type [ent->type] = newSViv (ent->type);
		589	SvREADONLY_on (sv_type [ent->type]);
		590	}
		591
		592	av_store (avent, 0, namesv);
		593	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		594	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		595
		596	av_store (av, i, newRV_noinc ((SV *)avent));
		597	}
		598	else
492	av_store (av, i, sv);	599	av_store (av, i, namesv);
		600
		601	++ent;
		602	}
		603	else
		604	{
		605	SV *name = newSVpv (names, 0);
		606	av_store (av, i, name);
493	buf += SvCUR (sv) + 1;	607	names += SvCUR (name) + 1;
		608	}
494	}	609	}
495		610
496	rv = sv_2mortal (newRV_noinc ((SV *)av));	611	rv = sv_2mortal (newRV_noinc ((SV *)av));
497	}	612	}
498		613
499	PUSHs (rv);	614	PUSHs (rv);
		615
		616	if (req->int1 & EIO_READDIR_CUSTOM1)
		617	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500	}	618	}
501	break;	619	break;
502		620
503	case REQ_OPEN:	621	case EIO_OPEN:
		622	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		623	break;
		624
		625	case EIO_STATVFS:
		626	case EIO_FSTATVFS:
504	{	627	{
505	/* convert fd to fh */	628	SV *rv = &PL_sv_undef;
506	SV *fh;	629
		630	#ifndef _WIN32
		631	if (req->result >= 0)
		632	{
		633	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		634	HV *hv = newHV ();
		635	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		636	* chooses to make it a struct.
		637	*/
		638	unsigned long fsid = 0;
		639	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
507		640
508	PUSHs (sv_2mortal (newSViv (req->result)));	641	rv = sv_2mortal (newRV_noinc ((SV *)hv));
509	PUTBACK;
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
511	SPAGAIN;
512		642
513	fh = POPs;	643	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
514	PUSHMARK (SP);	644	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		645	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		646	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		647	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		648	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		649	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		650	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		651	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		652	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		653	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		654	}
		655	#endif
		656
515	XPUSHs (fh);	657	PUSHs (rv);
516	}	658	}
		659
517	break;	660	break;
518		661
519	case REQ_GROUP:	662	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	663	req->int1 = 2; /* mark group as finished */
521		664
522	if (req->sv1)	665	if (req->sv1)
523	{	666	{
524	int i;	667	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	671	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	672	PUSHs (*av_fetch (av, i, 0));
530	}	673	}
531	break;	674	break;
532		675
533	case REQ_NOP:	676	case EIO_NOP:
534	case REQ_BUSY:	677	case EIO_BUSY:
535	break;	678	break;
536		679
537	case REQ_READLINK:	680	case EIO_READLINK:
		681	case EIO_REALPATH:
538	if (req->result > 0)	682	if (req->result > 0)
		683	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		684	break;
		685
		686	case EIO_STAT:
		687	case EIO_LSTAT:
		688	case EIO_FSTAT:
		689	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		690
		691	if (!(PL_laststatval = req->result))
		692	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		693	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		694
		695	PUSHs (sv_result);
		696	break;
		697
		698	case EIO_SEEK:
		699	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		700	break;
		701
		702	case EIO_READ:
		703	{
		704	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		705	*SvEND (req->sv2) = 0;
		706	SvPOK_only (req->sv2);
		707	SvSETMAGIC (req->sv2);
		708	PUSHs (sv_result);
		709	}
		710	break;
		711
		712	case EIO_SLURP:
		713	{
		714	if (req->result >= 0)
		715	{
		716	/* if length was originally not known, we steal the malloc'ed memory */
		717	if (req->flags & EIO_FLAG_PTR2_FREE)
		718	{
		719	req->flags &= ~EIO_FLAG_PTR2_FREE;
		720	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		721	}
		722	else
		723	{
		724	SvCUR_set (req->sv2, req->result);
		725	*SvEND (req->sv2) = 0;
		726	SvPOK_only (req->sv2);
		727	}
		728
		729	SvSETMAGIC (req->sv2);
		730	}
		731
		732	PUSHs (sv_result);
		733	}
		734	break;
		735
		736	case EIO_CUSTOM:
		737	if (req->feed == fiemap)
539	{	738	{
540	SvCUR_set (req->sv2, req->result);	739	#if HAVE_FIEMAP
541	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);	740	if (!req->result)
		741	{
		742	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		743
		744	if (fiemap->fm_extent_count)
		745	{
		746	AV *av = newAV ();
		747	int i;
		748
		749	while (fiemap->fm_mapped_extents)
		750	{
		751	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		752	AV *ext_av = newAV ();
		753
		754	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		755	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		756	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		757	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		758
		759	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		760	}
		761
		762	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		763	}
		764	else
		765	{
		766	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		767	PUSHs (sv_result);
		768	}
		769	}
		770	#endif
543	}	771	}
		772	else
		773	PUSHs (sv_result);
544	break;	774	break;
545		775
546	case REQ_STAT:	776	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
547	case REQ_LSTAT:	777	if (req->result > 0)
548	case REQ_FSTAT:	778	SvIV_set (sv_result, 0);
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	779	/* FALLTHROUGH */
550	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));
553	break;
554
555	case REQ_READ:
556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));
559	break;
560		780
561	default:	781	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	782	PUSHs (sv_result);
563	break;	783	break;
564	}	784	}
565		785
566	errno = req->errorno;	786	errno = req->errorno;
567		787
568	PUTBACK;	788	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	789	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	790	SPAGAIN;
		791
		792	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		793	SvREFCNT_dec (sv_result);
		794	else
		795	sv_result_cache = sv_result;
571		796
572	FREETMPS;	797	FREETMPS;
573	LEAVE;	798	LEAVE;
		799
		800	PUTBACK;
574	}	801	}
575		802
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	803	return !!SvTRUE (ERRSV);
591	}	804	}
592		805
		806	static void
593	static void req_destroy (aio_req req)	807	req_destroy (aio_req req)
594	{	808	{
595	if (req->self)	809	if (req->self)
596	{	810	{
597	sv_unmagic (req->self, PERL_MAGIC_ext);	811	sv_unmagic (req->self, PERL_MAGIC_ext);
598	SvREFCNT_dec (req->self);	812	SvREFCNT_dec (req->self);
599	}	813	}
600		814
601	SvREFCNT_dec (req->sv1);	815	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	816	SvREFCNT_dec (req->sv2);
		817	SvREFCNT_dec (req->sv3);
		818	SvREFCNT_dec (req->sv4);
603	SvREFCNT_dec (req->callback);	819	SvREFCNT_dec (req->callback);
604		820
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	821	free (req);
609	}	822	}
610		823
		824	static void
611	static void req_cancel_subs (aio_req grp)	825	req_cancel_subs (aio_req grp)
612	{	826	{
613	aio_req sub;
614
615	if (grp->type != REQ_GROUP)	827	if (grp->type != EIO_GROUP)
616	return;	828	return;
617		829
618	SvREFCNT_dec (grp->sv2);	830	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	831	grp->sv2 = 0;
620		832
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	833	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}	834	}
624		835
625	static void req_cancel (aio_req req)	836	static void ecb_cold
		837	create_respipe (void)
626	{	838	{
627	req->flags |= FLAG_CANCELLED;	839	if (s_epipe_renew (&respipe))
628		840	croak ("IO::AIO: unable to initialize result pipe");
629	req_cancel_subs (req);
630	}	841	}
631
632	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else
635	# define TO_SOCKET(x) (x)
636	#endif
637		842
638	static void	843	static void
639	create_respipe ()	844	poll_wait (void)
640	{	845	{
641	int old_readfd = respipe [0];
642
643	if (respipe [1] >= 0)
644	respipe_close (TO_SOCKET (respipe [1]));
645
646	#ifdef _WIN32
647	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
648	#else
649	if (pipe (respipe))
650	#endif
651	croak ("unable to initialize result pipe");
652
653	if (old_readfd >= 0)
654	{
655	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
656	croak ("unable to initialize result pipe(2)");
657
658	respipe_close (respipe [0]);
659	respipe [0] = old_readfd;
660	}
661
662	#ifdef _WIN32
663	int arg = 1;
664	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
665	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
666	#else
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
668	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
669	#endif
670	croak ("unable to initialize result pipe(3)");
671
672	respipe_osf [0] = TO_SOCKET (respipe [0]);
673	respipe_osf [1] = TO_SOCKET (respipe [1]);
674	}
675
676	X_THREAD_PROC (aio_proc);
677
678	static void start_thread (void)
679	{
680	worker *wrk = calloc (1, sizeof (worker));
681
682	if (!wrk)
683	croak ("unable to allocate worker thread data");
684
685	X_LOCK (wrklock);
686
687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688	{
689	wrk->prev = &wrk_first;
690	wrk->next = wrk_first.next;
691	wrk_first.next->prev = wrk;
692	wrk_first.next = wrk;
693	++started;
694	}
695	else
696	free (wrk);
697
698	X_UNLOCK (wrklock);
699	}
700
701	static void maybe_start_thread ()
702	{
703	if (get_nthreads () >= wanted)
704	return;
705
706	/* todo: maybe use idle here, but might be less exact */
707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708	return;
709
710	start_thread ();
711	}
712
713	static void req_send (aio_req req)
714	{
715	block_sig ();
716
717	++nreqs;
718
719	X_LOCK (reqlock);
720	++nready;
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	unblock_sig ();
726
727	maybe_start_thread ();
728	}
729
730	static void end_thread (void)
731	{
732	aio_req req;
733
734	Newz (0, req, 1, aio_cb);
735
736	req->type = REQ_QUIT;
737	req->pri = PRI_MAX + PRI_BIAS;
738
739	X_LOCK (reqlock);
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	X_LOCK (wrklock);
745	--started;
746	X_UNLOCK (wrklock);
747	}
748
749	static void set_max_idle (int nthreads)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752	max_idle = nthreads <= 0 ? 1 : nthreads;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754	}
755
756	static void min_parallel (int nthreads)
757	{
758	if (wanted < nthreads)
759	wanted = nthreads;
760	}
761
762	static void max_parallel (int nthreads)
763	{
764	if (wanted > nthreads)
765	wanted = nthreads;
766
767	while (started > wanted)
768	end_thread ();
769	}
770
771	static void poll_wait ()
772	{
773	fd_set rfd;
774
775	while (nreqs)	846	while (eio_nreqs ())
776	{	847	{
777	int size;	848	int size;
778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	849
		850	X_LOCK (EIO_POOL->reslock);
779	size = res_queue.size;	851	size = EIO_POOL->res_queue.size;
780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	852	X_UNLOCK (EIO_POOL->reslock);
781		853
782	if (size)	854	if (size)
783	return;	855	return;
784		856
785	maybe_start_thread ();	857	etp_maybe_start_thread (EIO_POOL);
786		858
787	FD_ZERO (&rfd);	859	s_epipe_wait (&respipe);
788	FD_SET (respipe [0], &rfd);
789
790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791	}	860	}
792	}	861	}
793		862
794	static int poll_cb ()	863	static int
		864	poll_cb (void)
795	{	865	{
796	dSP;
797	int count = 0;
798	int maxreqs = max_poll_reqs;
799	int do_croak = 0;
800	struct timeval tv_start, tv_now;
801	aio_req req;
802
803	if (max_poll_time)
804	gettimeofday (&tv_start, 0);
805
806	block_sig ();
807
808	for (;;)	866	for (;;)
809	{	867	{
810	for (;;)	868	int res = eio_poll ();
		869
		870	if (res > 0)
		871	croak (0);
		872
		873	if (!max_outstanding || max_outstanding > eio_nreqs ())
		874	return res;
		875
		876	poll_wait ();
		877	}
		878	}
		879
		880	static void ecb_cold
		881	reinit (void)
		882	{
		883	create_respipe ();
		884
		885	if (eio_init (want_poll, done_poll) < 0)
		886	croak ("IO::AIO: unable to initialise eio library");
		887	}
		888
		889	/*****************************************************************************/
		890
		891	static SV *
		892	get_cb (SV *cb_sv)
		893	{
		894	SvGETMAGIC (cb_sv);
		895	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		896	}
		897
		898	static aio_req ecb_noinline
		899	dreq (SV *callback)
		900	{
		901	SV *cb_cv;
		902	aio_req req;
		903	int req_pri = next_pri;
		904	next_pri = EIO_PRI_DEFAULT;
		905
		906	cb_cv = get_cb (callback);
		907
		908	req = calloc (sizeof (*req), 1);
		909	if (!req)
		910	croak ("out of memory during eio_req allocation");
		911
		912	req->callback = SvREFCNT_inc (cb_cv);
		913	req->pri = req_pri;
		914
		915	return req;
		916	}
		917
		918	#define dREQ \
		919	aio_req req = dreq (callback); \
		920
		921	#define REQ_SEND \
		922	PUTBACK; \
		923	req_submit (req); \
		924	SPAGAIN; \
		925	\
		926	if (GIMME_V != G_VOID) \
		927	XPUSHs (req_sv (req, aio_req_stash));
		928
		929	ecb_inline void
		930	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		931	{
		932	if (expect_false (SvROK (path)))
		933	{
		934	SV *rv = SvRV (path);
		935	SV *wdob;
		936
		937	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
811	{	938	{
812	maybe_start_thread ();	939	path = AvARRAY (rv)[1];
		940	wdob = AvARRAY (rv)[0];
813		941
814	X_LOCK (reslock);	942	if (SvOK (wdob))
815	req = reqq_shift (&res_queue);
816
817	if (req)
818	{	943	{
819	--npending;	944	*wd = SvAIO_WD (wdob);
820		945	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
821	if (!res_queue.size)
822	{
823	/* read any signals sent by the worker threads */
824	char buf [4];
825	while (respipe_read (respipe [0], buf, 4) == 4)
826	;
827	}
828	}
829
830	X_UNLOCK (reslock);
831
832	if (!req)
833	break;
834
835	--nreqs;
836
837	if (req->type == REQ_GROUP && req->size)
838	{
839	req->int1 = 1; /* mark request as delayed */
840	continue;
841	}	946	}
842	else	947	else
843	{	948	*wd = EIO_INVALID_WD;
844	if (!req_invoke (req))
845	{
846	req_destroy (req);
847	unblock_sig ();
848	croak (0);
849	}
850
851	count++;
852	}
853
854	req_destroy (req);
855
856	if (maxreqs && !--maxreqs)
857	break;
858
859	if (max_poll_time)
860	{
861	gettimeofday (&tv_now, 0);
862
863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864	break;
865	}
866	}	949	}
		950	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		951	{
		952	*wd = (aio_wd)(long)SvIVX (rv);
		953	*wdsv = SvREFCNT_inc_NN (rv);
		954	*ptr = ".";
		955	return; /* path set to "." */
		956	}
		957	else
		958	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		959	}
867		960
868	if (nreqs <= max_outstanding)	961	*pathsv = newSVsv (path);
		962	*ptr = SvPVbyte_nolen (*pathsv);
		963	}
		964
		965	static void ecb_noinline
		966	req_set_path1 (aio_req req, SV *path)
		967	{
		968	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		969	}
		970
		971	static void ecb_noinline
		972	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		973	{
		974	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		975
		976	switch (SvTYPE (rv))
		977	{
		978	case SVt_PVIO:
		979	case SVt_PVLV:
		980	case SVt_PVGV:
		981	req->type = type_fh;
		982	req->sv1 = newSVsv (fh_or_path);
		983	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
869	break;	984	break;
870		985
871	poll_wait ();	986	default:
872		987	req->type = type_path;
873	++maxreqs;	988	req_set_path1 (req, fh_or_path);
		989	break;
874	}	990	}
875
876	unblock_sig ();
877	return count;
878	}	991	}
879		992
880	/*****************************************************************************/	993	/*****************************************************************************/
881	/* work around various missing functions */
882		994
883	#if !HAVE_PREADWRITE	995	static void
884	# define pread aio_pread	996	ts_set (struct timespec *ts, NV value)
885	# define pwrite aio_pwrite
886
887	/*
888	* make our pread/pwrite safe against themselves, but not against
889	* normal read/write by using a mutex. slows down execution a lot,
890	* but that's your problem, not mine.
891	*/
892	static mutex_t preadwritelock = X_MUTEX_INIT;
893
894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895	{	997	{
896	ssize_t res;	998	ts->tv_sec = value;
897	off_t ooffset;	999	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
898
899	X_LOCK (preadwritelock);
900	ooffset = lseek (fd, 0, SEEK_CUR);
901	lseek (fd, offset, SEEK_SET);
902	res = read (fd, buf, count);
903	lseek (fd, ooffset, SEEK_SET);
904	X_UNLOCK (preadwritelock);
905
906	return res;
907	}	1000	}
908		1001
909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1002	static NV
		1003	ts_get (const struct timespec *ts)
910	{	1004	{
911	ssize_t res;	1005	return ts->tv_sec + ts->tv_nsec * 1e-9;
912	off_t ooffset;
913
914	X_LOCK (preadwritelock);
915	ooffset = lseek (fd, 0, SEEK_CUR);
916	lseek (fd, offset, SEEK_SET);
917	res = write (fd, buf, count);
918	lseek (fd, offset, SEEK_SET);
919	X_UNLOCK (preadwritelock);
920
921	return res;
922	}
923	#endif
924
925	#ifndef HAVE_FUTIMES
926
927	# define utimes(path,times) aio_utimes (path, times)
928	# define futimes(fd,times) aio_futimes (fd, times)
929
930	int aio_utimes (const char *filename, const struct timeval times[2])
931	{
932	if (times)
933	{
934	struct utimbuf buf;
935
936	buf.actime = times[0].tv_sec;
937	buf.modtime = times[1].tv_sec;
938
939	return utime (filename, &buf);
940	}
941	else
942	return utime (filename, 0);
943	}
944
945	int aio_futimes (int fd, const struct timeval tv[2])
946	{
947	errno = ENOSYS;
948	return -1;
949	}
950
951	#endif
952
953	#if !HAVE_FDATASYNC
954	# define fdatasync fsync
955	#endif
956
957	#if !HAVE_READAHEAD
958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
959
960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
961	{
962	size_t todo = count;
963	dBUF;
964
965	while (todo > 0)
966	{
967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968
969	pread (fd, aio_buf, len, offset);
970	offset += len;
971	todo -= len;
972	}
973
974	errno = 0;
975	return count;
976	}
977
978	#endif
979
980	#if !HAVE_READDIR_R
981	# define readdir_r aio_readdir_r
982
983	static mutex_t readdirlock = X_MUTEX_INIT;
984
985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
986	{
987	X_DIRENT *e;
988	int errorno;
989
990	X_LOCK (readdirlock);
991
992	e = readdir (dirp);
993	errorno = errno;
994
995	if (e)
996	{
997	*res = ent;
998	strcpy (ent->d_name, e->d_name);
999	}
1000	else
1001	*res = 0;
1002
1003	X_UNLOCK (readdirlock);
1004
1005	errno = errorno;
1006	return e ? 0 : -1;
1007	}
1008	#endif
1009
1010	/* sendfile always needs emulation */
1011	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1012	{
1013	ssize_t res;
1014
1015	if (!count)
1016	return 0;
1017
1018	#if HAVE_SENDFILE
1019	# if __linux
1020	res = sendfile (ofd, ifd, &offset, count);
1021
1022	# elif __freebsd
1023	/*
1024	* Of course, the freebsd sendfile is a dire hack with no thoughts
1025	* wasted on making it similar to other I/O functions.
1026	*/
1027	{
1028	off_t sbytes;
1029	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030
1031	if (res < 0 && sbytes)
1032	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1033	res = sbytes;
1034	}
1035
1036	# elif __hpux
1037	res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039	# elif __solaris
1040	{
1041	struct sendfilevec vec;
1042	size_t sbytes;
1043
1044	vec.sfv_fd = ifd;
1045	vec.sfv_flag = 0;
1046	vec.sfv_off = offset;
1047	vec.sfv_len = count;
1048
1049	res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051	if (res < 0 && sbytes)
1052	res = sbytes;
1053	}
1054
1055	# endif
1056	#else
1057	res = -1;
1058	errno = ENOSYS;
1059	#endif
1060
1061	if (res < 0
1062	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1063	#if __solaris
1064	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1065	#endif
1066	)
1067	)
1068	{
1069	/* emulate sendfile. this is a major pain in the ass */
1070	dBUF;
1071
1072	res = 0;
1073
1074	while (count)
1075	{
1076	ssize_t cnt;
1077
1078	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1079
1080	if (cnt <= 0)
1081	{
1082	if (cnt && !res) res = -1;
1083	break;
1084	}
1085
1086	cnt = write (ofd, aio_buf, cnt);
1087
1088	if (cnt <= 0)
1089	{
1090	if (cnt && !res) res = -1;
1091	break;
1092	}
1093
1094	offset += cnt;
1095	res += cnt;
1096	count -= cnt;
1097	}
1098	}
1099
1100	return res;
1101	}
1102
1103	/* read a full directory */
1104	static void scandir_ (aio_req req, worker *self)
1105	{
1106	DIR *dirp;
1107	union
1108	{
1109	X_DIRENT d;
1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111	} *u;
1112	X_DIRENT *entp;
1113	char *name, *names;
1114	int memlen = 4096;
1115	int memofs = 0;
1116	int res = 0;
1117
1118	X_LOCK (wrklock);
1119	self->dirp = dirp = opendir (req->ptr1);
1120	self->dbuf = u = malloc (sizeof (*u));
1121	req->flags |= FLAG_PTR2_FREE;
1122	req->ptr2 = names = malloc (memlen);
1123	X_UNLOCK (wrklock);
1124
1125	if (dirp && u && names)
1126	for (;;)
1127	{
1128	errno = 0;
1129	readdir_r (dirp, &u->d, &entp);
1130
1131	if (!entp)
1132	break;
1133
1134	name = entp->d_name;
1135
1136	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137	{
1138	int len = strlen (name) + 1;
1139
1140	res++;
1141
1142	while (memofs + len > memlen)
1143	{
1144	memlen *= 2;
1145	X_LOCK (wrklock);
1146	req->ptr2 = names = realloc (names, memlen);
1147	X_UNLOCK (wrklock);
1148
1149	if (!names)
1150	break;
1151	}
1152
1153	memcpy (names + memofs, name, len);
1154	memofs += len;
1155	}
1156	}
1157
1158	if (errno)
1159	res = -1;
1160
1161	req->result = res;
1162	}	1006	}
1163		1007
1164	/*****************************************************************************/	1008	/*****************************************************************************/
1165		1009
1166	X_THREAD_PROC (aio_proc)	1010	XS(boot_IO__AIO) ecb_cold;
1167	{
1168	{//D
1169	aio_req req;
1170	struct timespec ts;
1171	worker *self = (worker *)thr_arg;
1172		1011
1173	/* try to distribute timeouts somewhat randomly */
1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176	for (;;)
1177	{
1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180	X_LOCK (reqlock);
1181
1182	for (;;)
1183	{
1184	self->req = req = reqq_shift (&req_queue);
1185
1186	if (req)
1187	break;
1188
1189	++idle;
1190
1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192	== ETIMEDOUT)
1193	{
1194	if (idle > max_idle)
1195	{
1196	--idle;
1197	X_UNLOCK (reqlock);
1198	X_LOCK (wrklock);
1199	--started;
1200	X_UNLOCK (wrklock);
1201	goto quit;
1202	}
1203
1204	/* we are allowed to idle, so do so without any timeout */
1205	X_COND_WAIT (reqwait, reqlock);
1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207	}
1208
1209	--idle;
1210	}
1211
1212	--nready;
1213
1214	X_UNLOCK (reqlock);
1215
1216	errno = 0; /* strictly unnecessary */
1217
1218	if (!(req->flags & FLAG_CANCELLED))
1219	switch (req->type)
1220	{
1221	case REQ_READ: req->result = req->offs >= 0
1222	? pread (req->int1, req->ptr1, req->size, req->offs)
1223	: read (req->int1, req->ptr1, req->size); break;
1224	case REQ_WRITE: req->result = req->offs >= 0
1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226	: write (req->int1, req->ptr1, req->size); break;
1227
1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243	case REQ_CLOSE: req->result = close (req->int1); break;
1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
1255	case REQ_READDIR: scandir_ (req, self); break;
1256
1257	case REQ_BUSY:
1258	#ifdef _WIN32
1259	Sleep (req->nv1 * 1000.);
1260	#else
1261	{
1262	struct timeval tv;
1263
1264	tv.tv_sec = req->nv1;
1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267	req->result = select (0, 0, 0, 0, &tv);
1268	}
1269	#endif
1270	break;
1271
1272	case REQ_UTIME:
1273	case REQ_FUTIME:
1274	{
1275	struct timeval tv[2];
1276	struct timeval *times;
1277
1278	if (req->nv1 != -1. || req->nv2 != -1.)
1279	{
1280	tv[0].tv_sec = req->nv1;
1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282	tv[1].tv_sec = req->nv2;
1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285	times = tv;
1286	}
1287	else
1288	times = 0;
1289
1290
1291	req->result = req->type == REQ_FUTIME
1292	? futimes (req->int1, times)
1293	: utimes (req->ptr1, times);
1294	}
1295
1296	case REQ_GROUP:
1297	case REQ_NOP:
1298	break;
1299
1300	case REQ_QUIT:
1301	goto quit;
1302
1303	default:
1304	req->result = -1;
1305	break;
1306	}
1307
1308	req->errorno = errno;
1309
1310	X_LOCK (reslock);
1311
1312	++npending;
1313
1314	if (!reqq_push (&res_queue, req))
1315	{
1316	/* write a dummy byte to the pipe so fh becomes ready */
1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319	/* optionally signal the main thread asynchronously */
1320	if (main_sig)
1321	pthread_kill (main_tid, main_sig);
1322	}
1323
1324	self->req = 0;
1325	worker_clear (self);
1326
1327	X_UNLOCK (reslock);
1328	}
1329
1330	quit:
1331	X_LOCK (wrklock);
1332	worker_free (self);
1333	X_UNLOCK (wrklock);
1334
1335	return 0;
1336	}//D
1337	}
1338
1339	/*****************************************************************************/
1340
1341	static void atfork_prepare (void)
1342	{
1343	X_LOCK (wrklock);
1344	X_LOCK (reqlock);
1345	X_LOCK (reslock);
1346	#if !HAVE_PREADWRITE
1347	X_LOCK (preadwritelock);
1348	#endif
1349	#if !HAVE_READDIR_R
1350	X_LOCK (readdirlock);
1351	#endif
1352	}
1353
1354	static void atfork_parent (void)
1355	{
1356	#if !HAVE_READDIR_R
1357	X_UNLOCK (readdirlock);
1358	#endif
1359	#if !HAVE_PREADWRITE
1360	X_UNLOCK (preadwritelock);
1361	#endif
1362	X_UNLOCK (reslock);
1363	X_UNLOCK (reqlock);
1364	X_UNLOCK (wrklock);
1365	}
1366
1367	static void atfork_child (void)
1368	{
1369	aio_req prv;
1370
1371	while (prv = reqq_shift (&req_queue))
1372	req_destroy (prv);
1373
1374	while (prv = reqq_shift (&res_queue))
1375	req_destroy (prv);
1376
1377	while (wrk_first.next != &wrk_first)
1378	{
1379	worker *wrk = wrk_first.next;
1380
1381	if (wrk->req)
1382	req_destroy (wrk->req);
1383
1384	worker_clear (wrk);
1385	worker_free (wrk);
1386	}
1387
1388	started = 0;
1389	idle = 0;
1390	nreqs = 0;
1391	nready = 0;
1392	npending = 0;
1393
1394	create_respipe ();
1395
1396	atfork_parent ();
1397	}
1398
1399	#define dREQ \
1400	aio_req req; \
1401	int req_pri = next_pri; \
1402	next_pri = DEFAULT_PRI + PRI_BIAS; \
1403	\
1404	if (SvOK (callback) && !SvROK (callback)) \
1405	croak ("callback must be undef or of reference type"); \
1406	\
1407	Newz (0, req, 1, aio_cb); \
1408	if (!req) \
1409	croak ("out of memory during aio_req allocation"); \
1410	\
1411	req->callback = newSVsv (callback); \
1412	req->pri = req_pri
1413
1414	#define REQ_SEND \
1415	req_send (req); \
1416	\
1417	if (GIMME_V != G_VOID) \
1418	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1419
1420	MODULE = IO::AIO PACKAGE = IO::AIO	1012	MODULE = IO::AIO PACKAGE = IO::AIO
1421		1013
1422	PROTOTYPES: ENABLE	1014	PROTOTYPES: ENABLE
1423		1015
1424	BOOT:	1016	BOOT:
1425	{	1017	{
		1018	static const struct {
		1019	const char *name;
		1020	IV iv;
		1021	} *civ, const_iv[] = {
		1022	# define const_niv(name, value) { # name, (IV) value },
		1023	# define const_iv(name) { # name, (IV) name },
		1024	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1025
		1026	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1027	/* the first block can be undef if missing */
		1028	const_iv (ENOSYS)
		1029	const_iv (EXDEV)
		1030	const_iv (EBADR)
		1031
		1032	/* for lseek */
		1033	const_iv (SEEK_DATA)
		1034	const_iv (SEEK_HOLE)
		1035
		1036	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1037	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1038	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1039	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1040	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1041	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1042
		1043	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1044	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1045	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1046	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1047	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1048
		1049	/* the second block will be 0 when missing */
		1050	const_iv (O_ACCMODE)
		1051
		1052	const_iv (O_RDONLY)
		1053	const_iv (O_WRONLY)
		1054	const_iv (O_RDWR)
		1055	const_iv (O_CREAT)
		1056	const_iv (O_TRUNC)
		1057	const_iv (O_EXCL)
		1058	const_iv (O_APPEND)
		1059
		1060	const_iv (O_ASYNC)
		1061	const_iv (O_DIRECT)
		1062	const_iv (O_NOATIME)
		1063
		1064	const_iv (O_CLOEXEC)
		1065	const_iv (O_NOCTTY)
		1066	const_iv (O_NOFOLLOW)
		1067	const_iv (O_NONBLOCK)
		1068	const_iv (O_EXEC)
		1069	const_iv (O_SEARCH)
		1070	const_iv (O_DIRECTORY)
		1071	const_iv (O_DSYNC)
		1072	const_iv (O_RSYNC)
		1073	const_iv (O_SYNC)
		1074	const_iv (O_PATH)
		1075	const_iv (O_TMPFILE)
		1076	const_iv (O_TTY_INIT)
		1077
		1078	const_iv (S_IFIFO)
		1079	const_iv (S_IFCHR)
		1080	const_iv (S_IFBLK)
		1081	const_iv (S_IFLNK)
		1082	const_iv (S_IFREG)
		1083	const_iv (S_IFDIR)
		1084	const_iv (S_IFWHT)
		1085	const_iv (S_IFSOCK)
		1086	const_iv (S_IFMT)
		1087
		1088	const_iv (ST_RDONLY)
		1089	const_iv (ST_NOSUID)
		1090	const_iv (ST_NODEV)
		1091	const_iv (ST_NOEXEC)
		1092	const_iv (ST_SYNCHRONOUS)
		1093	const_iv (ST_MANDLOCK)
		1094	const_iv (ST_WRITE)
		1095	const_iv (ST_APPEND)
		1096	const_iv (ST_IMMUTABLE)
		1097	const_iv (ST_NOATIME)
		1098	const_iv (ST_NODIRATIME)
		1099	const_iv (ST_RELATIME)
		1100
		1101	const_iv (PROT_NONE)
		1102	const_iv (PROT_EXEC)
		1103	const_iv (PROT_READ)
		1104	const_iv (PROT_WRITE)
		1105
		1106	const_iv (MAP_PRIVATE)
		1107	const_iv (MAP_SHARED)
		1108	const_iv (MAP_FIXED)
		1109	const_iv (MAP_ANONYMOUS)
		1110
		1111	/* linuxish */
		1112	const_iv (MAP_LOCKED)
		1113	const_iv (MAP_NORESERVE)
		1114	const_iv (MAP_POPULATE)
		1115	const_iv (MAP_NONBLOCK)
		1116	const_iv (MAP_GROWSDOWN)
		1117	const_iv (MAP_32BIT)
		1118	const_iv (MAP_HUGETLB)
		1119	const_iv (MAP_STACK)
		1120
		1121	const_iv (MREMAP_MAYMOVE)
		1122	const_iv (MREMAP_FIXED)
		1123
		1124	const_iv (F_DUPFD_CLOEXEC)
		1125
		1126	const_iv (MSG_CMSG_CLOEXEC)
		1127	const_iv (SOCK_CLOEXEC)
		1128
		1129	const_iv (F_OFD_GETLK)
		1130	const_iv (F_OFD_SETLK)
		1131	const_iv (F_OFD_GETLKW)
		1132
		1133	const_iv (FIFREEZE)
		1134	const_iv (FITHAW)
		1135	const_iv (FITRIM)
		1136	const_iv (FICLONE)
		1137	const_iv (FICLONERANGE)
		1138	const_iv (FIDEDUPERANGE)
		1139
		1140	const_iv (FS_IOC_GETFLAGS)
		1141	const_iv (FS_IOC_SETFLAGS)
		1142	const_iv (FS_IOC_GETVERSION)
		1143	const_iv (FS_IOC_SETVERSION)
		1144	const_iv (FS_IOC_FIEMAP)
		1145	const_iv (FS_IOC_FSGETXATTR)
		1146	const_iv (FS_IOC_FSSETXATTR)
		1147	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1148	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1149	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1150
		1151	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1152
		1153	const_iv (FS_SECRM_FL)
		1154	const_iv (FS_UNRM_FL)
		1155	const_iv (FS_COMPR_FL)
		1156	const_iv (FS_SYNC_FL)
		1157	const_iv (FS_IMMUTABLE_FL)
		1158	const_iv (FS_APPEND_FL)
		1159	const_iv (FS_NODUMP_FL)
		1160	const_iv (FS_NOATIME_FL)
		1161	const_iv (FS_DIRTY_FL)
		1162	const_iv (FS_COMPRBLK_FL)
		1163	const_iv (FS_NOCOMP_FL)
		1164	const_iv (FS_ENCRYPT_FL)
		1165	const_iv (FS_BTREE_FL)
		1166	const_iv (FS_INDEX_FL)
		1167	const_iv (FS_JOURNAL_DATA_FL)
		1168	const_iv (FS_NOTAIL_FL)
		1169	const_iv (FS_DIRSYNC_FL)
		1170	const_iv (FS_TOPDIR_FL)
		1171	const_iv (FS_FL_USER_MODIFIABLE)
		1172
		1173	const_iv (FS_XFLAG_REALTIME)
		1174	const_iv (FS_XFLAG_PREALLOC)
		1175	const_iv (FS_XFLAG_IMMUTABLE)
		1176	const_iv (FS_XFLAG_APPEND)
		1177	const_iv (FS_XFLAG_SYNC)
		1178	const_iv (FS_XFLAG_NOATIME)
		1179	const_iv (FS_XFLAG_NODUMP)
		1180	const_iv (FS_XFLAG_RTINHERIT)
		1181	const_iv (FS_XFLAG_PROJINHERIT)
		1182	const_iv (FS_XFLAG_NOSYMLINKS)
		1183	const_iv (FS_XFLAG_EXTSIZE)
		1184	const_iv (FS_XFLAG_EXTSZINHERIT)
		1185	const_iv (FS_XFLAG_NODEFRAG)
		1186	const_iv (FS_XFLAG_FILESTREAM)
		1187	const_iv (FS_XFLAG_DAX)
		1188	const_iv (FS_XFLAG_HASATTR)
		1189
		1190	const_iv (FIEMAP_FLAG_SYNC)
		1191	const_iv (FIEMAP_FLAG_XATTR)
		1192	const_iv (FIEMAP_FLAGS_COMPAT)
		1193	const_iv (FIEMAP_EXTENT_LAST)
		1194	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1195	const_iv (FIEMAP_EXTENT_DELALLOC)
		1196	const_iv (FIEMAP_EXTENT_ENCODED)
		1197	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1198	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1199	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1200	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1201	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1202	const_iv (FIEMAP_EXTENT_MERGED)
		1203	const_iv (FIEMAP_EXTENT_SHARED)
		1204
		1205	const_iv (SPLICE_F_MOVE)
		1206	const_iv (SPLICE_F_NONBLOCK)
		1207	const_iv (SPLICE_F_MORE)
		1208	const_iv (SPLICE_F_GIFT)
		1209
		1210	const_iv (EFD_CLOEXEC)
		1211	const_iv (EFD_NONBLOCK)
		1212	const_iv (EFD_SEMAPHORE)
		1213
		1214	const_iv (CLOCK_REALTIME)
		1215	const_iv (CLOCK_MONOTONIC)
		1216	const_iv (CLOCK_BOOTTIME)
		1217	const_iv (CLOCK_REALTIME_ALARM)
		1218	const_iv (CLOCK_BOOTTIME_ALARM)
		1219
		1220	const_iv (TFD_NONBLOCK)
		1221	const_iv (TFD_CLOEXEC)
		1222
		1223	const_iv (TFD_TIMER_ABSTIME)
		1224	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1225
		1226	/* these are libeio constants, and are independent of gendef0 */
		1227	const_eio (SEEK_SET)
		1228	const_eio (SEEK_CUR)
		1229	const_eio (SEEK_END)
		1230
		1231	const_eio (MCL_FUTURE)
		1232	const_eio (MCL_CURRENT)
		1233
		1234	const_eio (MS_ASYNC)
		1235	const_eio (MS_INVALIDATE)
		1236	const_eio (MS_SYNC)
		1237
		1238	const_eio (MT_MODIFY)
		1239
		1240	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1241	const_eio (SYNC_FILE_RANGE_WRITE)
		1242	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1243
		1244	const_eio (FALLOC_FL_KEEP_SIZE)
		1245	const_eio (FALLOC_FL_PUNCH_HOLE)
		1246	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1247	const_eio (FALLOC_FL_ZERO_RANGE)
		1248	const_eio (FALLOC_FL_INSERT_RANGE)
		1249	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1250
		1251	const_eio (RENAME_NOREPLACE)
		1252	const_eio (RENAME_EXCHANGE)
		1253	const_eio (RENAME_WHITEOUT)
		1254
		1255	const_eio (READDIR_DENTS)
		1256	const_eio (READDIR_DIRS_FIRST)
		1257	const_eio (READDIR_STAT_ORDER)
		1258	const_eio (READDIR_FOUND_UNKNOWN)
		1259
		1260	const_eio (DT_UNKNOWN)
		1261	const_eio (DT_FIFO)
		1262	const_eio (DT_CHR)
		1263	const_eio (DT_DIR)
		1264	const_eio (DT_BLK)
		1265	const_eio (DT_REG)
		1266	const_eio (DT_LNK)
		1267	const_eio (DT_SOCK)
		1268	const_eio (DT_WHT)
		1269	};
		1270
1426	HV *stash = gv_stashpv ("IO::AIO", 1);	1271	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1272	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1273	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1274	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1427		1275
1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1276	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1277	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1433	#ifdef _WIN32
1434	X_MUTEX_CHECK (wrklock);
1435	X_MUTEX_CHECK (reslock);
1436	X_MUTEX_CHECK (reqlock);
1437	X_MUTEX_CHECK (reqwait);
1438	X_MUTEX_CHECK (preadwritelock);
1439	X_MUTEX_CHECK (readdirlock);
1440		1278
1441	X_COND_CHECK (reqwait);	1279	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1442	#else
1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445	#endif
1446		1280
1447	create_respipe ();	1281	reinit ();
1448
1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1450	}	1282	}
1451		1283
1452	void	1284	void
		1285	reinit ()
		1286	PROTOTYPE:
		1287
		1288	void
1453	max_poll_reqs (int nreqs)	1289	max_poll_reqs (unsigned int nreqs)
1454	PROTOTYPE: $	1290	PROTOTYPE: $
1455	CODE:	1291	CODE:
1456	max_poll_reqs = nreqs;	1292	eio_set_max_poll_reqs (nreqs);
1457		1293
1458	void	1294	void
1459	max_poll_time (double nseconds)	1295	max_poll_time (double nseconds)
1460	PROTOTYPE: $	1296	PROTOTYPE: $
1461	CODE:	1297	CODE:
1462	max_poll_time = nseconds * AIO_TICKS;	1298	eio_set_max_poll_time (nseconds);
1463		1299
1464	void	1300	void
1465	min_parallel (int nthreads)	1301	min_parallel (unsigned int nthreads)
1466	PROTOTYPE: $
1467
1468	void
1469	max_parallel (int nthreads)
1470	PROTOTYPE: $
1471
1472	void
1473	max_idle (int nthreads)
1474	PROTOTYPE: $	1302	PROTOTYPE: $
1475	CODE:	1303	CODE:
1476	set_max_idle (nthreads);	1304	eio_set_min_parallel (nthreads);
1477		1305
1478	int	1306	void
1479	max_outstanding (int maxreqs)	1307	max_parallel (unsigned int nthreads)
1480	PROTOTYPE: $	1308	PROTOTYPE: $
1481	CODE:	1309	CODE:
1482	RETVAL = max_outstanding;	1310	eio_set_max_parallel (nthreads);
		1311
		1312	void
		1313	max_idle (unsigned int nthreads)
		1314	PROTOTYPE: $
		1315	CODE:
		1316	eio_set_max_idle (nthreads);
		1317
		1318	void
		1319	idle_timeout (unsigned int seconds)
		1320	PROTOTYPE: $
		1321	CODE:
		1322	eio_set_idle_timeout (seconds);
		1323
		1324	void
		1325	max_outstanding (unsigned int maxreqs)
		1326	PROTOTYPE: $
		1327	CODE:
1483	max_outstanding = maxreqs;	1328	max_outstanding = maxreqs;
1484	OUTPUT:
1485	RETVAL
1486		1329
1487	void	1330	void
1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1331	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1489	PROTOTYPE: $$$;$
1490	PPCODE:	1332	PPCODE:
1491	{	1333	{
1492	dREQ;	1334	dREQ;
1493		1335
		1336	req->type = EIO_WD_OPEN;
		1337	req_set_path1 (req, pathname);
		1338
		1339	REQ_SEND;
		1340	}
		1341
		1342	void
		1343	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1344	PPCODE:
		1345	{
		1346	dREQ;
		1347
1494	req->type = REQ_OPEN;	1348	req->type = EIO_OPEN;
1495	req->sv1 = newSVsv (pathname);	1349	req_set_path1 (req, pathname);
1496	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->int1 = flags;	1350	req->int1 = flags;
1498	req->mode = mode;	1351	req->int2 = mode;
1499		1352
1500	REQ_SEND;	1353	REQ_SEND;
1501	}	1354	}
1502		1355
1503	void	1356	void
1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1357	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1505	PROTOTYPE: $;$
1506	ALIAS:	1358	ALIAS:
1507	aio_close = REQ_CLOSE
1508	aio_fsync = REQ_FSYNC	1359	aio_fsync = EIO_FSYNC
1509	aio_fdatasync = REQ_FDATASYNC	1360	aio_fdatasync = EIO_FDATASYNC
		1361	aio_syncfs = EIO_SYNCFS
1510	PPCODE:	1362	PPCODE:
1511	{	1363	{
		1364	int fd = s_fileno_croak (fh, 0);
1512	dREQ;	1365	dREQ;
1513		1366
1514	req->type = ix;	1367	req->type = ix;
1515	req->sv1 = newSVsv (fh);	1368	req->sv1 = newSVsv (fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1369	req->int1 = fd;
1517		1370
1518	REQ_SEND (req);	1371	REQ_SEND;
1519	}	1372	}
1520		1373
1521	void	1374	void
		1375	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1376	PPCODE:
		1377	{
		1378	int fd = s_fileno_croak (fh, 0);
		1379	dREQ;
		1380
		1381	req->type = EIO_SYNC_FILE_RANGE;
		1382	req->sv1 = newSVsv (fh);
		1383	req->int1 = fd;
		1384	req->offs = offset;
		1385	req->size = nbytes;
		1386	req->int2 = flags;
		1387
		1388	REQ_SEND;
		1389	}
		1390
		1391	void
		1392	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1393	PPCODE:
		1394	{
		1395	int fd = s_fileno_croak (fh, 0);
		1396	dREQ;
		1397
		1398	req->type = EIO_FALLOCATE;
		1399	req->sv1 = newSVsv (fh);
		1400	req->int1 = fd;
		1401	req->int2 = mode;
		1402	req->offs = offset;
		1403	req->size = len;
		1404
		1405	REQ_SEND;
		1406	}
		1407
		1408	void
		1409	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1410	PPCODE:
		1411	{
		1412	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1413	int fd = s_fileno_croak (fh, 0);
		1414	dREQ;
		1415
		1416	if (expect_false (close_fd < 0))
		1417	{
		1418	int pipefd [2];
		1419
		1420	if (
		1421	#ifdef _WIN32
		1422	_pipe (pipefd, 1, _O_BINARY) < 0
		1423	#else
		1424	pipe (pipefd) < 0
		1425	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1426	#endif
		1427	|| close (pipefd [1]) < 0
		1428	)
		1429	abort (); /*D*/
		1430
		1431	close_fd = pipefd [0];
		1432	}
		1433
		1434	req->type = EIO_DUP2;
		1435	req->int1 = close_fd;
		1436	req->sv2 = newSVsv (fh);
		1437	req->int2 = fd;
		1438
		1439	REQ_SEND;
		1440	}
		1441
		1442	void
		1443	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1444	PPCODE:
		1445	{
		1446	int fd = s_fileno_croak (fh, 0);
		1447	dREQ;
		1448
		1449	req->type = EIO_SEEK;
		1450	req->sv1 = newSVsv (fh);
		1451	req->int1 = fd;
		1452	req->offs = SvVAL64 (offset);
		1453	req->int2 = whence;
		1454
		1455	REQ_SEND;
		1456	}
		1457
		1458	void
1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1459	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1523	ALIAS:	1460	ALIAS:
1524	aio_read = REQ_READ	1461	aio_read = EIO_READ
1525	aio_write = REQ_WRITE	1462	aio_write = EIO_WRITE
1526	PROTOTYPE: $$$$$;$
1527	PPCODE:	1463	PPCODE:
1528	{	1464	{
1529	STRLEN svlen;	1465	STRLEN svlen;
		1466	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530	char *svptr = SvPVbyte (data, svlen);	1467	char *svptr = SvPVbyte (data, svlen);
1531	UV len = SvUV (length);	1468	UV len = SvUV (length);
1532		1469
1533	SvUPGRADE (data, SVt_PV);
1534	SvPOK_on (data);
1535
1536	if (dataoffset < 0)	1470	if (dataoffset < 0)
1537	dataoffset += svlen;	1471	dataoffset += svlen;
1538		1472
1539	if (dataoffset < 0 || dataoffset > svlen)	1473	if (dataoffset < 0 || dataoffset > svlen)
1540	croak ("dataoffset outside of data scalar");	1474	croak ("dataoffset outside of data scalar");
1541		1475
1542	if (ix == REQ_WRITE)	1476	if (ix == EIO_WRITE)
1543	{	1477	{
1544	/* write: check length and adjust. */	1478	/* write: check length and adjust. */
1545	if (!SvOK (length) || len + dataoffset > svlen)	1479	if (!SvOK (length) || len + dataoffset > svlen)
1546	len = svlen - dataoffset;	1480	len = svlen - dataoffset;
1547	}	1481	}
1548	else	1482	else
1549	{	1483	{
1550	/* read: grow scalar as necessary */	1484	/* read: check type and grow scalar as necessary */
		1485	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1551	svptr = SvGROW (data, len + dataoffset + 1);	1486	svptr = sv_grow (data, len + dataoffset + 1);
		1487	else if (SvCUR (data) < len + dataoffset)
		1488	croak ("length + dataoffset outside of scalar, and cannot grow");
1552	}	1489	}
1553
1554	if (len < 0)
1555	croak ("length must not be negative");
1556		1490
1557	{	1491	{
1558	dREQ;	1492	dREQ;
1559		1493
1560	req->type = ix;	1494	req->type = ix;
1561	req->sv1 = newSVsv (fh);	1495	req->sv1 = newSVsv (fh);
1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1496	req->int1 = fd;
1563	: IoOFP (sv_2io (fh)));
1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1497	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565	req->size = len;	1498	req->size = len;
1566	req->sv2 = SvREFCNT_inc (data);	1499	req->sv2 = SvREFCNT_inc (data);
1567	req->ptr1 = (char *)svptr + dataoffset;	1500	req->ptr2 = (char *)svptr + dataoffset;
1568	req->stroffset = dataoffset;	1501	req->stroffset = dataoffset;
1569		1502
1570	if (!SvREADONLY (data))	1503	if (!SvREADONLY (data))
1571	{	1504	{
1572	SvREADONLY_on (data);	1505	SvREADONLY_on (data);
…		…
1576	REQ_SEND;	1509	REQ_SEND;
1577	}	1510	}
1578	}	1511	}
1579		1512
1580	void	1513	void
1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1514	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1582	PROTOTYPE: $$;$	1515	ALIAS:
		1516	aio_ioctl = EIO_IOCTL
		1517	aio_fcntl = EIO_FCNTL
1583	PPCODE:	1518	PPCODE:
1584	{	1519	{
1585	SV *data;	1520	int fd = s_fileno_croak (fh, 0);
1586	dREQ;	1521	char *svptr;
1587		1522
1588	data = newSV (NAME_MAX);	1523	if (SvPOK (arg) || !SvNIOK (arg))
1589	SvPOK_on (data);
1590
1591	req->type = REQ_READLINK;
1592	req->sv1 = newSVsv (path);
1593	req->ptr2 = SvPVbyte_nolen (req->sv1);
1594	req->sv2 = data;
1595	req->ptr1 = SvPVbyte_nolen (data);
1596
1597	REQ_SEND;
1598	}
1599
1600	void
1601	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1602	PROTOTYPE: $$$$;$
1603	PPCODE:
1604	{
1605	dREQ;
1606
1607	req->type = REQ_SENDFILE;
1608	req->sv1 = newSVsv (out_fh);
1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1610	req->sv2 = newSVsv (in_fh);
1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1612	req->offs = SvVAL64 (in_offset);
1613	req->size = length;
1614
1615	REQ_SEND;
1616	}
1617
1618	void
1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1620	PROTOTYPE: $$$;$
1621	PPCODE:
1622	{
1623	dREQ;
1624
1625	req->type = REQ_READAHEAD;
1626	req->sv1 = newSVsv (fh);
1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1628	req->offs = SvVAL64 (offset);
1629	req->size = length;
1630
1631	REQ_SEND;
1632	}
1633
1634	void
1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1636	ALIAS:
1637	aio_stat = REQ_STAT
1638	aio_lstat = REQ_LSTAT
1639	PPCODE:
1640	{
1641	dREQ;
1642
1643	req->ptr2 = malloc (sizeof (Stat_t));
1644	if (!req->ptr2)
1645	{	1524	{
1646	req_destroy (req);	1525	STRLEN svlen;
1647	croak ("out of memory during aio_stat statdata allocation");	1526	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1648	}	1527	#ifdef IOCPARM_LEN
		1528	STRLEN need = IOCPARM_LEN (request);
		1529	#else
		1530	STRLEN need = 256;
		1531	#endif
1649		1532
1650	req->flags |= FLAG_PTR2_FREE;	1533	if (svlen < need)
1651	req->sv1 = newSVsv (fh_or_path);	1534	svptr = SvGROW (arg, need);
1652
1653	if (SvPOK (fh_or_path))
1654	{
1655	req->type = ix;
1656	req->ptr1 = SvPVbyte_nolen (req->sv1);
1657	}	1535	}
1658	else	1536	else
		1537	svptr = (char *)SvIV (arg);
		1538
1659	{	1539	{
		1540	dREQ;
		1541
1660	req->type = REQ_FSTAT;	1542	req->type = ix;
1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1543	req->sv1 = newSVsv (fh);
		1544	req->int1 = fd;
		1545	req->int2 = (long)request;
		1546	req->sv2 = SvREFCNT_inc (arg);
		1547	req->ptr2 = svptr;
		1548
		1549	REQ_SEND;
1662	}	1550	}
		1551	}
		1552
		1553	void
		1554	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1555	ALIAS:
		1556	aio_readlink = EIO_READLINK
		1557	aio_realpath = EIO_REALPATH
		1558	PPCODE:
		1559	{
		1560	dREQ;
		1561
		1562	req->type = ix;
		1563	req_set_path1 (req, pathname);
1663		1564
1664	REQ_SEND;	1565	REQ_SEND;
1665	}	1566	}
1666		1567
1667	void	1568	void
		1569	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1570	PPCODE:
		1571	{
		1572	int ifd = s_fileno_croak (in_fh , 0);
		1573	int ofd = s_fileno_croak (out_fh, 1);
		1574	dREQ;
		1575
		1576	req->type = EIO_SENDFILE;
		1577	req->sv1 = newSVsv (out_fh);
		1578	req->int1 = ofd;
		1579	req->sv2 = newSVsv (in_fh);
		1580	req->int2 = ifd;
		1581	req->offs = in_offset;
		1582	req->size = length;
		1583
		1584	REQ_SEND;
		1585	}
		1586
		1587	void
		1588	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1589	PPCODE:
		1590	{
		1591	int fd = s_fileno_croak (fh, 0);
		1592	dREQ;
		1593
		1594	req->type = EIO_READAHEAD;
		1595	req->sv1 = newSVsv (fh);
		1596	req->int1 = fd;
		1597	req->offs = offset;
		1598	req->size = length;
		1599
		1600	REQ_SEND;
		1601	}
		1602
		1603	void
		1604	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1605	ALIAS:
		1606	aio_stat = EIO_STAT
		1607	aio_lstat = EIO_LSTAT
		1608	aio_statvfs = EIO_STATVFS
		1609	PPCODE:
		1610	{
		1611	dREQ;
		1612
		1613	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1614
		1615	REQ_SEND;
		1616	}
		1617
		1618	UV
		1619	major (UV dev)
		1620	ALIAS:
		1621	minor = 1
		1622	CODE:
		1623	RETVAL = ix ? minor (dev) : major (dev);
		1624	OUTPUT:
		1625	RETVAL
		1626
		1627	UV
		1628	makedev (UV maj, UV min)
		1629	CODE:
		1630	RETVAL = makedev (maj, min);
		1631	OUTPUT:
		1632	RETVAL
		1633
		1634	void
1668	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1635	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1669	PPCODE:	1636	PPCODE:
1670	{	1637	{
1671	dREQ;	1638	dREQ;
1672		1639
1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1640	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1641	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675	req->sv1 = newSVsv (fh_or_path);	1642	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1676
1677	if (SvPOK (fh_or_path))
1678	{
1679	req->type = REQ_UTIME;
1680	req->ptr1 = SvPVbyte_nolen (req->sv1);
1681	}
1682	else
1683	{
1684	req->type = REQ_FUTIME;
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686	}
1687		1643
1688	REQ_SEND;	1644	REQ_SEND;
1689	}	1645	}
1690		1646
1691	void	1647	void
1692	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1648	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1693	PPCODE:	1649	PPCODE:
1694	{	1650	{
1695	dREQ;	1651	dREQ;
1696		1652
1697	req->sv1 = newSVsv (fh_or_path);
1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1653	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699		1654	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1700	if (SvPOK (fh_or_path))
1701	{
1702	req->type = REQ_TRUNCATE;
1703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1704	}
1705	else
1706	{
1707	req->type = REQ_FTRUNCATE;
1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	}
1710		1655
1711	REQ_SEND;	1656	REQ_SEND;
1712	}	1657	}
1713		1658
1714	void	1659	void
1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1660	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1716	PPCODE:	1661	PPCODE:
1717	{	1662	{
1718	dREQ;	1663	dREQ;
1719		1664
1720	req->mode = mode;	1665	req->int2 = mode;
1721	req->sv1 = newSVsv (fh_or_path);	1666	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1722
1723	if (SvPOK (fh_or_path))
1724	{
1725	req->type = REQ_CHMOD;
1726	req->ptr1 = SvPVbyte_nolen (req->sv1);
1727	}
1728	else
1729	{
1730	req->type = REQ_FCHMOD;
1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732	}
1733		1667
1734	REQ_SEND;	1668	REQ_SEND;
1735	}	1669	}
1736		1670
1737	void	1671	void
1738	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1672	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1739	PPCODE:	1673	PPCODE:
1740	{	1674	{
1741	dREQ;	1675	dREQ;
1742		1676
1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1677	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1678	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745	req->sv1 = newSVsv (fh_or_path);	1679	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1746
1747	if (SvPOK (fh_or_path))
1748	{
1749	req->type = REQ_CHOWN;
1750	req->ptr1 = SvPVbyte_nolen (req->sv1);
1751	}
1752	else
1753	{
1754	req->type = REQ_FCHOWN;
1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756	}
1757		1680
1758	REQ_SEND;	1681	REQ_SEND;
1759	}	1682	}
1760		1683
1761	void	1684	void
		1685	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1686	PPCODE:
		1687	{
		1688	dREQ;
		1689
		1690	req->type = EIO_READDIR;
		1691	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1692
		1693	if (flags & EIO_READDIR_DENTS)
		1694	req->int1 |= EIO_READDIR_CUSTOM2;
		1695
		1696	req_set_path1 (req, pathname);
		1697
		1698	REQ_SEND;
		1699	}
		1700
		1701	void
		1702	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1703	PPCODE:
		1704	{
		1705	dREQ;
		1706
		1707	req->type = EIO_MKDIR;
		1708	req->int2 = mode;
		1709	req_set_path1 (req, pathname);
		1710
		1711	REQ_SEND;
		1712	}
		1713
		1714	void
1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1715	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1763	ALIAS:	1716	ALIAS:
1764	aio_unlink = REQ_UNLINK	1717	aio_unlink = EIO_UNLINK
1765	aio_rmdir = REQ_RMDIR	1718	aio_rmdir = EIO_RMDIR
1766	aio_readdir = REQ_READDIR	1719	aio_readdir = EIO_READDIR
1767	PPCODE:	1720	PPCODE:
1768	{	1721	{
1769	dREQ;	1722	dREQ;
1770		1723
1771	req->type = ix;	1724	req->type = ix;
1772	req->sv1 = newSVsv (pathname);	1725	req_set_path1 (req, pathname);
1773	req->ptr1 = SvPVbyte_nolen (req->sv1);
1774		1726
1775	REQ_SEND;	1727	REQ_SEND;
1776	}	1728	}
1777		1729
1778	void	1730	void
1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	1731	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
		1732	ALIAS:
		1733	aio_link = EIO_LINK
		1734	aio_symlink = EIO_SYMLINK
		1735	aio_rename = EIO_RENAME
1780	PPCODE:	1736	PPCODE:
1781	{	1737	{
1782	dREQ;	1738	eio_wd wd2 = 0;
1783
1784	req->type = REQ_MKDIR;
1785	req->sv1 = newSVsv (pathname);
1786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1787	req->mode = mode;
1788
1789	REQ_SEND;
1790	}
1791
1792	void
1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794	ALIAS:
1795	aio_link = REQ_LINK
1796	aio_symlink = REQ_SYMLINK
1797	aio_rename = REQ_RENAME
1798	PPCODE:
1799	{
1800	dREQ;	1739	dREQ;
1801		1740
1802	req->type = ix;	1741	req->type = ix;
1803	req->sv2 = newSVsv (oldpath);	1742	req_set_path1 (req, oldpath);
1804	req->ptr2 = SvPVbyte_nolen (req->sv2);	1743	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1805	req->sv1 = newSVsv (newpath);	1744	req->int3 = (long)wd2;
1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1807		1745
1808	REQ_SEND;	1746	REQ_SEND;
1809	}	1747	}
1810		1748
1811	void	1749	void
1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1750	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1813	PPCODE:	1751	PPCODE:
1814	{	1752	{
		1753	eio_wd wd2 = 0;
1815	dREQ;	1754	dREQ;
1816		1755
1817	req->type = REQ_MKNOD;	1756	req->type = EIO_RENAME;
1818	req->sv1 = newSVsv (pathname);	1757	req_set_path1 (req, oldpath);
1819	req->ptr1 = SvPVbyte_nolen (req->sv1);	1758	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1820	req->mode = (mode_t)mode;	1759	req->int2 = flags;
1821	req->offs = dev;	1760	req->int3 = (long)wd2;
1822		1761
1823	REQ_SEND;	1762	REQ_SEND;
1824	}	1763	}
1825		1764
1826	void	1765	void
1827	aio_busy (double delay, SV *callback=&PL_sv_undef)	1766	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1828	PPCODE:	1767	PPCODE:
1829	{	1768	{
1830	dREQ;	1769	dREQ;
		1770
		1771	req->type = EIO_MKNOD;
		1772	req->int2 = (mode_t)mode;
		1773	req->offs = dev;
		1774	req_set_path1 (req, pathname);
		1775
		1776	REQ_SEND;
		1777	}
1831		1778
		1779	void
		1780	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1781	ALIAS:
		1782	aio_mtouch = EIO_MTOUCH
		1783	aio_msync = EIO_MSYNC
		1784	PPCODE:
		1785	{
		1786	STRLEN svlen;
		1787	char *svptr = SvPVbyte (data, svlen);
		1788	UV len = SvUV (length);
		1789
		1790	if (flags < 0)
		1791	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1792
		1793	if (offset < 0)
		1794	offset += svlen;
		1795
		1796	if (offset < 0 || offset > svlen)
		1797	croak ("offset outside of scalar");
		1798
		1799	if (!SvOK (length) || len + offset > svlen)
		1800	len = svlen - offset;
		1801
		1802	{
		1803	dREQ;
		1804
		1805	req->type = ix;
		1806	req->sv2 = SvREFCNT_inc (data);
		1807	req->ptr2 = (char *)svptr + offset;
		1808	req->size = len;
		1809	req->int1 = flags;
		1810
		1811	REQ_SEND;
		1812	}
		1813	}
		1814
		1815	void
		1816	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1817	PPCODE:
		1818	{
		1819	STRLEN svlen;
		1820	char *svptr = SvPVbyte (data, svlen);
		1821	UV len = SvUV (length);
		1822
		1823	if (offset < 0)
		1824	offset += svlen;
		1825
		1826	if (offset < 0 || offset > svlen)
		1827	croak ("offset outside of scalar");
		1828
		1829	if (!SvOK (length) || len + offset > svlen)
		1830	len = svlen - offset;
		1831
		1832	{
		1833	dREQ;
		1834
		1835	req->type = EIO_MLOCK;
		1836	req->sv2 = SvREFCNT_inc (data);
		1837	req->ptr2 = (char *)svptr + offset;
		1838	req->size = len;
		1839
		1840	REQ_SEND;
		1841	}
		1842	}
		1843
		1844	void
		1845	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1846	PPCODE:
		1847	{
		1848	dREQ;
		1849
		1850	req->type = EIO_MLOCKALL;
		1851	req->int1 = flags;
		1852
		1853	REQ_SEND;
		1854	}
		1855
		1856	void
		1857	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1858	PPCODE:
		1859	{
		1860	int fd = s_fileno_croak (fh, 0);
		1861	dREQ;
		1862
		1863	req->type = EIO_CUSTOM;
		1864	req->sv1 = newSVsv (fh);
		1865	req->int1 = fd;
		1866
		1867	req->feed = fiemap;
		1868	#if HAVE_FIEMAP
		1869	/* keep our fingers crossed that the next two types are 64 bit */
		1870	req->offs = start;
		1871	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1872	req->int2 = flags;
		1873	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1874	#endif
		1875
		1876	REQ_SEND;
		1877	}
		1878
		1879	void
		1880	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1881	PPCODE:
		1882	{
		1883	char *svptr = 0;
		1884
		1885	sv_clear_foreign (data);
		1886
		1887	if (length) /* known length, directly read into scalar */
		1888	{
		1889	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1890	svptr = sv_grow (data, length + 1);
		1891	else if (SvCUR (data) < length)
		1892	croak ("length outside of scalar, and cannot grow");
		1893	else
		1894	svptr = SvPVbyte_nolen (data);
		1895	}
		1896
		1897	{
		1898	dREQ;
		1899
		1900	req->type = EIO_SLURP;
		1901	req_set_path1 (req, pathname);
		1902	req->offs = offset;
		1903	req->size = length;
		1904	req->sv2 = SvREFCNT_inc (data);
		1905	req->ptr2 = svptr;
		1906
		1907	if (!SvREADONLY (data))
		1908	{
		1909	SvREADONLY_on (data);
		1910	req->flags |= FLAG_SV2_RO_OFF;
		1911	}
		1912
		1913	REQ_SEND;
		1914	}
		1915	}
		1916
		1917	void
		1918	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1919	PPCODE:
		1920	{
		1921	dREQ;
		1922
1832	req->type = REQ_BUSY;	1923	req->type = EIO_BUSY;
1833	req->nv1 = delay < 0. ? 0. : delay;	1924	req->nv1 = delay < 0. ? 0. : delay;
1834		1925
1835	REQ_SEND;	1926	REQ_SEND;
1836	}	1927	}
1837		1928
1838	void	1929	void
1839	aio_group (SV *callback=&PL_sv_undef)	1930	aio_group (SV *callback = &PL_sv_undef)
1840	PROTOTYPE: ;$
1841	PPCODE:	1931	PPCODE:
1842	{	1932	{
1843	dREQ;	1933	dREQ;
1844		1934
1845	req->type = REQ_GROUP;	1935	req->type = EIO_GROUP;
1846		1936
		1937	PUTBACK;
1847	req_send (req);	1938	req_submit (req);
		1939	SPAGAIN;
		1940
1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1941	XPUSHs (req_sv (req, aio_grp_stash));
1849	}	1942	}
1850		1943
1851	void	1944	void
1852	aio_nop (SV *callback=&PL_sv_undef)	1945	aio_nop (SV *callback = &PL_sv_undef)
		1946	ALIAS:
		1947	aio_nop = EIO_NOP
		1948	aio_sync = EIO_SYNC
1853	PPCODE:	1949	PPCODE:
1854	{	1950	{
1855	dREQ;	1951	dREQ;
1856		1952
1857	req->type = REQ_NOP;	1953	req->type = ix;
1858		1954
1859	REQ_SEND;	1955	REQ_SEND;
1860	}	1956	}
1861		1957
1862	int	1958	int
1863	aioreq_pri (int pri = 0)	1959	aioreq_pri (int pri = NO_INIT)
1864	PROTOTYPE: ;$
1865	CODE:	1960	CODE:
1866	RETVAL = next_pri - PRI_BIAS;	1961	RETVAL = next_pri;
1867	if (items > 0)	1962	if (items > 0)
1868	{	1963	{
1869	if (pri < PRI_MIN) pri = PRI_MIN;	1964	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870	if (pri > PRI_MAX) pri = PRI_MAX;	1965	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871	next_pri = pri + PRI_BIAS;	1966	next_pri = pri;
1872	}	1967	}
1873	OUTPUT:	1968	OUTPUT:
1874	RETVAL	1969	RETVAL
1875		1970
1876	void	1971	void
1877	aioreq_nice (int nice = 0)	1972	aioreq_nice (int nice = 0)
1878	CODE:	1973	CODE:
1879	nice = next_pri - nice;	1974	nice = next_pri - nice;
1880	if (nice < PRI_MIN) nice = PRI_MIN;	1975	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881	if (nice > PRI_MAX) nice = PRI_MAX;	1976	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882	next_pri = nice + PRI_BIAS;	1977	next_pri = nice;
1883		1978
1884	void	1979	void
1885	flush ()	1980	flush ()
1886	PROTOTYPE:
1887	CODE:	1981	CODE:
1888	while (nreqs)	1982	while (eio_nreqs ())
1889	{	1983	{
1890	poll_wait ();	1984	poll_wait ();
1891	poll_cb ();	1985	poll_cb ();
1892	}	1986	}
1893		1987
1894	int	1988	int
1895	poll()	1989	poll ()
1896	PROTOTYPE:
1897	CODE:	1990	CODE:
1898	poll_wait ();	1991	poll_wait ();
1899	RETVAL = poll_cb ();	1992	RETVAL = poll_cb ();
1900	OUTPUT:	1993	OUTPUT:
1901	RETVAL	1994	RETVAL
1902		1995
1903	int	1996	int
1904	poll_fileno()	1997	poll_fileno ()
1905	PROTOTYPE:
1906	CODE:	1998	CODE:
1907	RETVAL = respipe [0];	1999	RETVAL = s_epipe_fd (&respipe);
1908	OUTPUT:	2000	OUTPUT:
1909	RETVAL	2001	RETVAL
1910		2002
1911	int	2003	int
1912	poll_cb(...)	2004	poll_cb (...)
1913	PROTOTYPE:	2005	PROTOTYPE:
1914	CODE:	2006	CODE:
1915	RETVAL = poll_cb ();	2007	RETVAL = poll_cb ();
1916	OUTPUT:	2008	OUTPUT:
1917	RETVAL	2009	RETVAL
1918		2010
1919	void	2011	void
1920	poll_wait()	2012	poll_wait ()
1921	PROTOTYPE:
1922	CODE:	2013	CODE:
1923	poll_wait ();	2014	poll_wait ();
1924		2015
1925	void
1926	setsig (int signum = SIGIO)
1927	PROTOTYPE: ;$
1928	CODE:
1929	{
1930	if (block_sig_level)
1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933	X_LOCK (reslock);
1934	main_tid = pthread_self ();
1935	main_sig = signum;
1936	X_UNLOCK (reslock);
1937
1938	if (main_sig && npending)
1939	pthread_kill (main_tid, main_sig);
1940	}
1941
1942	void
1943	aio_block (SV *cb)
1944	PROTOTYPE: &
1945	PPCODE:
1946	{
1947	int count;
1948
1949	block_sig ();
1950	PUSHMARK (SP);
1951	PUTBACK;
1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953	SPAGAIN;
1954	unblock_sig ();
1955
1956	if (SvTRUE (ERRSV))
1957	croak (0);
1958
1959	XSRETURN (count);
1960	}
1961
1962	int	2016	int
1963	nreqs()	2017	nreqs ()
1964	PROTOTYPE:
1965	CODE:	2018	CODE:
1966	RETVAL = nreqs;	2019	RETVAL = eio_nreqs ();
1967	OUTPUT:	2020	OUTPUT:
1968	RETVAL	2021	RETVAL
1969		2022
1970	int	2023	int
1971	nready()	2024	nready ()
1972	PROTOTYPE:
1973	CODE:	2025	CODE:
1974	RETVAL = get_nready ();	2026	RETVAL = eio_nready ();
1975	OUTPUT:	2027	OUTPUT:
1976	RETVAL	2028	RETVAL
1977		2029
1978	int	2030	int
1979	npending()	2031	npending ()
1980	PROTOTYPE:
1981	CODE:	2032	CODE:
1982	RETVAL = get_npending ();	2033	RETVAL = eio_npending ();
1983	OUTPUT:	2034	OUTPUT:
1984	RETVAL	2035	RETVAL
1985		2036
1986	int	2037	int
1987	nthreads()	2038	nthreads ()
1988	PROTOTYPE:
1989	CODE:	2039	CODE:
1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	2040	RETVAL = eio_nthreads ();
1991	RETVAL = started;
1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993	OUTPUT:	2041	OUTPUT:
1994	RETVAL	2042	RETVAL
1995		2043
		2044	int
		2045	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2046	CODE:
		2047	RETVAL = posix_fadvise (fh, offset, length, advice);
		2048	OUTPUT:
		2049	RETVAL
		2050
		2051	IV
		2052	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2053	CODE:
		2054	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2055	OUTPUT:
		2056	RETVAL
		2057
		2058	void
		2059	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2060	PPCODE:
		2061	sv_clear_foreign (scalar);
		2062	{
		2063	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2064	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2065	if (addr == (void *)-1)
		2066	XSRETURN_NO;
		2067
		2068	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2069
		2070	if (!(prot & PROT_WRITE))
		2071	SvREADONLY_on (scalar);
		2072
		2073	XSRETURN_YES;
		2074	}
		2075
		2076	void
		2077	munmap (SV *scalar)
		2078	CODE:
		2079	sv_clear_foreign (scalar);
		2080
		2081	SV *
		2082	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2083	CODE:
		2084	{
		2085	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2086	void *new;
		2087
		2088	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2089	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2090
		2091	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2092
		2093	RETVAL = &PL_sv_no;
		2094
		2095	if (new != (void *)-1)
		2096	{
		2097	RETVAL = new == (void *)mg->mg_ptr
		2098	? newSVpvn ("0 but true", 10)
		2099	: &PL_sv_yes;
		2100
		2101	mg->mg_ptr = (char *)new;
		2102	mg->mg_obj = (SV *)new_length;
		2103
		2104	SvPVX (scalar) = mg->mg_ptr;
		2105	SvCUR_set (scalar, new_length);
		2106	}
		2107	}
		2108	OUTPUT:
		2109	RETVAL
		2110
		2111	int
		2112	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2113	ALIAS:
		2114	mprotect = 1
		2115	CODE:
		2116	{
		2117	STRLEN svlen;
		2118	void *addr = SvPVbyte (scalar, svlen);
		2119	STRLEN len = SvUV (length);
		2120
		2121	if (offset < 0)
		2122	offset += svlen;
		2123
		2124	if (offset < 0 || offset > svlen)
		2125	croak ("offset outside of scalar");
		2126
		2127	if (!SvOK (length) || len + offset > svlen)
		2128	len = svlen - offset;
		2129
		2130	addr = (void *)(((intptr_t)addr) + offset);
		2131	eio_page_align (&addr, &len);
		2132
		2133	switch (ix)
		2134	{
		2135	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2136	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2137	}
		2138	}
		2139	OUTPUT:
		2140	RETVAL
		2141
		2142	int
		2143	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2144	CODE:
		2145	{
		2146	STRLEN svlen;
		2147	void *addr = SvPVbyte (scalar, svlen);
		2148	size_t len = SvUV (length);
		2149
		2150	if (offset < 0)
		2151	offset += svlen;
		2152
		2153	if (offset < 0 || offset > svlen)
		2154	croak ("offset outside of scalar");
		2155
		2156	if (!SvOK (length) || len + offset > svlen)
		2157	len = svlen - offset;
		2158
		2159	addr = (void *)(((intptr_t)addr) + offset);
		2160	eio_page_align (&addr, &len);
		2161	#if _POSIX_MEMLOCK_RANGE
		2162	RETVAL = munlock (addr, len);
		2163	#else
		2164	RETVAL = EIO_ENOSYS ();
		2165	#endif
		2166	}
		2167	OUTPUT:
		2168	RETVAL
		2169
		2170	int
		2171	munlockall ()
		2172	CODE:
		2173	#if _POSIX_MEMLOCK
		2174	munlockall ();
		2175	#else
		2176	RETVAL = EIO_ENOSYS ();
		2177	#endif
		2178	OUTPUT:
		2179	RETVAL
		2180
		2181	int
		2182	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2183	CODE:
		2184	{
		2185	#if HAVE_LINUX_SPLICE
		2186	loff_t off_in_, off_out_;
		2187	RETVAL = splice (
		2188	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2189	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2190	length, flags
		2191	);
		2192	#else
		2193	RETVAL = EIO_ENOSYS ();
		2194	#endif
		2195	}
		2196	OUTPUT:
		2197	RETVAL
		2198
		2199	int
		2200	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2201	CODE:
		2202	#if HAVE_LINUX_SPLICE
		2203	RETVAL = tee (rfh, wfh, length, flags);
		2204	#else
		2205	RETVAL = EIO_ENOSYS ();
		2206	#endif
		2207	OUTPUT:
		2208	RETVAL
		2209
		2210	int
		2211	pipesize (aio_rfd rfh, int new_size = -1)
		2212	PROTOTYPE: $;$
		2213	CODE:
		2214	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2215	if (new_size >= 0)
		2216	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2217	else
		2218	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2219	#else
		2220	errno = ENOSYS;
		2221	RETVAL = -1;
		2222	#endif
		2223	OUTPUT:
		2224	RETVAL
		2225
		2226	void
		2227	pipe2 (int flags = 0)
		2228	PROTOTYPE: ;$
		2229	PPCODE:
		2230	{
		2231	int fd[2];
		2232	int res;
		2233
		2234	if (flags)
		2235	#if HAVE_PIPE2
		2236	res = pipe2 (fd, flags);
		2237	#else
		2238	res = (errno = ENOSYS, -1);
		2239	#endif
		2240	else
		2241	res = pipe (fd);
		2242
		2243	if (!res)
		2244	{
		2245	EXTEND (SP, 2);
		2246	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2247	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2248	}
		2249	}
		2250
		2251	void
		2252	eventfd (unsigned int initval = 0, int flags = 0)
		2253	PPCODE:
		2254	{
		2255	int fd;
		2256	#if HAVE_EVENTFD
		2257	fd = eventfd (initval, flags);
		2258	#else
		2259	fd = (errno = ENOSYS, -1);
		2260	#endif
		2261
		2262	XPUSHs (newmortalFH (fd, O_RDWR));
		2263	}
		2264
		2265	void
		2266	timerfd_create (int clockid, int flags = 0)
		2267	PPCODE:
		2268	{
		2269	int fd;
		2270	#if HAVE_TIMERFD
		2271	fd = timerfd_create (clockid, flags);
		2272	#else
		2273	fd = (errno = ENOSYS, -1);
		2274	#endif
		2275
		2276	XPUSHs (newmortalFH (fd, O_RDWR));
		2277	}
		2278
		2279	void
		2280	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2281	PPCODE:
		2282	{
		2283	int fd = s_fileno_croak (fh, 0);
		2284	#if HAVE_TIMERFD
		2285	int res;
		2286	struct itimerspec its, ots;
		2287
		2288	ts_set (&its.it_interval, interval);
		2289	ts_set (&its.it_value , value);
		2290	res = timerfd_settime (fd, flags, &its, &ots);
		2291
		2292	if (!res)
		2293	{
		2294	EXTEND (SP, 2);
		2295	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2296	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2297	}
		2298	#else
		2299	errno = ENOSYS;
		2300	#endif
		2301	}
		2302
		2303	void
		2304	timerfd_gettime (SV *fh)
		2305	PPCODE:
		2306	{
		2307	int fd = s_fileno_croak (fh, 0);
		2308	#if HAVE_TIMERFD
		2309	int res;
		2310	struct itimerspec ots;
		2311	res = timerfd_gettime (fd, &ots);
		2312
		2313	if (!res)
		2314	{
		2315	EXTEND (SP, 2);
		2316	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2317	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2318	}
		2319	#else
		2320	errno = ENOSYS;
		2321	#endif
		2322	}
		2323
		2324	UV
		2325	get_fdlimit ()
		2326	CODE:
		2327	#if HAVE_RLIMITS
		2328	struct rlimit rl;
		2329	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2330	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2331	#endif
		2332	XSRETURN_UNDEF;
		2333	OUTPUT:
		2334	RETVAL
		2335
		2336	void
		2337	min_fdlimit (UV limit = 0x7fffffffU)
		2338	CODE:
		2339	{
		2340	#if HAVE_RLIMITS
		2341	struct rlimit rl;
		2342	rlim_t orig_rlim_max;
		2343	UV bit;
		2344
		2345	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2346	goto fail;
		2347
		2348	if (rl.rlim_cur == RLIM_INFINITY)
		2349	XSRETURN_YES;
		2350
		2351	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2352
		2353	if (rl.rlim_cur < limit)
		2354	{
		2355	rl.rlim_cur = limit;
		2356
		2357	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2358	rl.rlim_max = rl.rlim_cur;
		2359	}
		2360
		2361	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2362	XSRETURN_YES;
		2363
		2364	if (errno == EPERM)
		2365	{
		2366	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2367	/* our limit overflows a system-wide limit */
		2368	/* try an adaptive algorithm, but do not lower the hardlimit */
		2369	rl.rlim_max = 0;
		2370	for (bit = 0x40000000U; bit; bit >>= 1)
		2371	{
		2372	rl.rlim_max |= bit;
		2373	rl.rlim_cur = rl.rlim_max;
		2374
		2375	/* nevr decrease the hard limit */
		2376	if (rl.rlim_max < orig_rlim_max)
		2377	break;
		2378
		2379	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2380	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2381	}
		2382
		2383	/* now, raise the soft limit to the max permitted */
		2384	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2385	{
		2386	rl.rlim_cur = rl.rlim_max;
		2387	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2388	errno = EPERM;
		2389	}
		2390	}
		2391	#endif
		2392	fail:
		2393	XSRETURN_UNDEF;
		2394	}
		2395
		2396	void _on_next_submit (SV *cb)
		2397	CODE:
		2398	SvREFCNT_dec (on_next_submit);
		2399	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2400
1996	PROTOTYPES: DISABLE	2401	PROTOTYPES: DISABLE
		2402
		2403	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2404
		2405	BOOT:
		2406	{
		2407	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2408	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2409	}
		2410
		2411	void
		2412	DESTROY (SV *self)
		2413	CODE:
		2414	{
		2415	aio_wd wd = SvAIO_WD (self);
		2416	#if HAVE_AT
		2417	{
		2418	SV *callback = &PL_sv_undef;
		2419	dREQ; /* clobbers next_pri :/ */
		2420	next_pri = req->pri; /* restore next_pri */
		2421	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2422	req->type = EIO_WD_CLOSE;
		2423	req->wd = wd;
		2424	REQ_SEND;
		2425	}
		2426	#else
		2427	eio_wd_close_sync (wd);
		2428	#endif
		2429	}
1997		2430
1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2431	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999		2432
2000	void	2433	void
2001	cancel (aio_req_ornot req)	2434	cancel (aio_req_ornot req)
2002	CODE:	2435	CODE:
2003	req_cancel (req);	2436	eio_cancel (req);
2004		2437
2005	void	2438	void
2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2439	cb (aio_req_ornot req, SV *callback = NO_INIT)
2007	CODE:	2440	PPCODE:
		2441	{
		2442	if (GIMME_V != G_VOID)
		2443	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2444
		2445	if (items > 1)
		2446	{
		2447	SV *cb_cv = get_cb (callback);
		2448
2008	SvREFCNT_dec (req->callback);	2449	SvREFCNT_dec (req->callback);
2009	req->callback = newSVsv (callback);	2450	req->callback = SvREFCNT_inc (cb_cv);
		2451	}
		2452	}
2010		2453
2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2454	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012		2455
2013	void	2456	void
2014	add (aio_req grp, ...)	2457	add (aio_req grp, ...)
2015	PPCODE:	2458	PPCODE:
2016	{	2459	{
2017	int i;	2460	int i;
2018	aio_req req;
2019
2020	if (main_sig && !block_sig_level)
2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022		2461
2023	if (grp->int1 == 2)	2462	if (grp->int1 == 2)
2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2463	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025		2464
2026	for (i = 1; i < items; ++i )	2465	for (i = 1; i < items; ++i )
2027	{	2466	{
		2467	aio_req req;
		2468
2028	if (GIMME_V != G_VOID)	2469	if (GIMME_V != G_VOID)
2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2470	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030		2471
2031	req = SvAIO_REQ (ST (i));	2472	req = SvAIO_REQ (ST (i));
2032		2473
2033	if (req)	2474	if (req)
2034	{	2475	eio_grp_add (grp, req);
2035	++grp->size;
2036	req->grp = grp;
2037
2038	req->grp_prev = 0;
2039	req->grp_next = grp->grp_first;
2040
2041	if (grp->grp_first)
2042	grp->grp_first->grp_prev = req;
2043
2044	grp->grp_first = req;
2045	}
2046	}	2476	}
2047	}	2477	}
2048		2478
2049	void	2479	void
2050	cancel_subs (aio_req_ornot req)	2480	cancel_subs (aio_req_ornot req)
…		…
2059	AV *av;	2489	AV *av;
2060		2490
2061	grp->errorno = errno;	2491	grp->errorno = errno;
2062		2492
2063	av = newAV ();	2493	av = newAV ();
		2494	av_extend (av, items - 1);
2064		2495
2065	for (i = 1; i < items; ++i )	2496	for (i = 1; i < items; ++i )
2066	av_push (av, newSVsv (ST (i)));	2497	av_push (av, newSVsv (ST (i)));
2067		2498
2068	SvREFCNT_dec (grp->sv1);	2499	SvREFCNT_dec (grp->sv1);
…		…
2075	grp->errorno = errorno;	2506	grp->errorno = errorno;
2076		2507
2077	void	2508	void
2078	limit (aio_req grp, int limit)	2509	limit (aio_req grp, int limit)
2079	CODE:	2510	CODE:
2080	grp->int2 = limit;	2511	eio_grp_limit (grp, limit);
2081	aio_grp_feed (grp);
2082		2512
2083	void	2513	void
2084	feed (aio_req grp, SV *callback=&PL_sv_undef)	2514	feed (aio_req grp, SV *callback = &PL_sv_undef)
2085	CODE:	2515	CODE:
2086	{	2516	{
2087	SvREFCNT_dec (grp->sv2);	2517	SvREFCNT_dec (grp->sv2);
2088	grp->sv2 = newSVsv (callback);	2518	grp->sv2 = newSVsv (callback);
		2519	grp->feed = aio_grp_feed;
2089		2520
2090	if (grp->int2 <= 0)	2521	if (grp->int2 <= 0)
2091	grp->int2 = 2;	2522	grp->int2 = 2;
2092		2523
2093	aio_grp_feed (grp);	2524	eio_grp_limit (grp, grp->int2);
2094	}	2525	}
2095		2526

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