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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 2006 UTC vs.
Revision 1.250 by root, Fri Sep 22 05:20:39 2017 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"	9	#include "schmorp.h"
17
18	#include <pthread.h>
19		10
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	14	#include <sys/types.h>
25	#include <sys/stat.h>	15	#include <sys/stat.h>
26	#include <limits.h>	16	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	17	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	18	#include <sched.h>
31		19
32	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
33	# if __linux
34	# include <sys/sendfile.h>
35	# elif __freebsd
36	# include <sys/socket.h>
37	# include <sys/uio.h>	21	# include <sys/mman.h>
38	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
		38	/* perl namespace pollution */
		39	#undef VERSION
		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80
		81	#define EIO_STRUCT_STAT struct _stati64
		82	#define EIO_STRUCT_STATI64
		83
		84	#else
		85
39	# include <sys/socket.h>	86	#include <sys/time.h>
40	# elif __solaris /* not yet */
41	# include <sys/sendfile.h>	87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	#include "libeio/config.h"
		110
		111	#if HAVE_RLIMITS
		112	#include <sys/time.h>
		113	#include <sys/resource.h>
		114	#endif
		115
		116	typedef SV SV8; /* byte-sv, used for argument-checking */
		117	typedef int aio_rfd; /* read file desriptor */
		118	typedef int aio_wfd; /* write file descriptor */
		119
		120	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		121
		122	#define EIO_REQ_MEMBERS \
		123	SV *callback; \
		124	SV *sv1, *sv2; \
		125	SV *sv3, *sv4; \
		126	STRLEN stroffset; \
		127	SV *self;
		128
		129	#define EIO_NO_WRAPPERS 1
		130
		131	#include "libeio/eio.h"
		132
		133	static int req_invoke (eio_req *req);
		134	#define EIO_FINISH(req) req_invoke (req)
		135	static void req_destroy (eio_req *grp);
		136	#define EIO_DESTROY(req) req_destroy (req)
		137
		138	#include "libeio/eio.c"
		139
		140	#if !HAVE_POSIX_FADVISE
		141	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		142	#endif
		143
		144	#if !HAVE_POSIX_MADVISE
		145	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef MAP_ANONYMOUS
		149	# ifdef MAP_ANON
		150	# define MAP_ANONYMOUS MAP_ANON
42	# else	151	# else
43	# error sendfile support requested but not available	152	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
44	# endif	153	# endif
45	#endif	154	#endif
46		155
47	/* used for struct dirent, AIX doesn't provide it */	156	/* defines all sorts of constants to 0 unless they are already defined */
48	#ifndef NAME_MAX	157	/* also provides const_iv_ and const_niv_ macros for them */
49	# define NAME_MAX 4096	158	#include "def0.h"
50	#endif
51		159
52	#if __ia64	160	#ifndef makedev
53	# define STACKSIZE 65536	161	# define makedev(maj,min) (((maj) << 8) | (min))
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif	162	#endif
		163	#ifndef major
		164	# define major(dev) ((dev) >> 8)
		165	#endif
		166	#ifndef minor
		167	# define minor(dev) ((dev) & 0xff)
		168	#endif
59		169
60	/* buffer size for various temporary buffers */	170	#if PAGESIZE <= 0
61	#define AIO_BUFSIZE 65536	171	# define PAGESIZE sysconf (_SC_PAGESIZE)
		172	#endif
62		173
63	#define dBUF \	174	/*****************************************************************************/
64	char *aio_buf; \	175
65	LOCK (wrklock); \	176	static void
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	177	fiemap (eio_req *req)
67	UNLOCK (wrklock); \	178	{
68	if (!aio_buf) \	179	req->result = -1;
		180
		181	#if HAVE_FIEMAP
		182	/* assume some c99 */
		183	struct fiemap *fiemap = 0;
		184	size_t end_offset;
		185	int count = req->int3;
		186
		187	req->flags |= EIO_FLAG_PTR1_FREE;
		188
		189	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		190	/* increase in 3.5kb steps */
		191	if (count < 0)
		192	count = 8;
		193
		194	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		195	errno = ENOMEM;
		196	if (!fiemap)
69	return -1;	197	return;
70		198
71	enum {	199	req->ptr1 = fiemap;
72	REQ_QUIT,
73	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		200
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	201	fiemap->fm_start = req->offs;
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	202	fiemap->fm_length = req->size;
		203	fiemap->fm_flags = req->int2;
		204	fiemap->fm_extent_count = count;
87		205
88	typedef struct aio_cb	206	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
89	{	207	return;
90	struct aio_cb *volatile next;
91		208
92	SV *data, *callback;	209	if (req->int3 >= 0 /* not autosizing */
93	SV *fh, *fh2;	210	|| !fiemap->fm_mapped_extents /* no more extents */
94	void *dataptr, *data2ptr;	211	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
95	Stat_t *statdata;	212	goto done;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99		213
100	STRLEN dataoffset;	214	/* else we have to loop -
101	int type;	215	* it would be tempting (actually I tried that first) to just query the
102	int fd, fd2;	216	* number of extents needed, but linux often feels like not returning all
103	int errorno;	217	* extents, without telling us it left any out. this complicates
104	mode_t mode; /* open */	218	* this quite a bit.
		219	*/
105		220
106	unsigned char flags;	221	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
107	unsigned char pri;
108		222
109	SV *self; /* the perl counterpart of this request, if any */	223	for (;;)
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01,
115	};
116
117	typedef aio_cb *aio_req;
118	typedef aio_cb *aio_req_ornot;
119
120	enum {
121	PRI_MIN = -4,
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;
134	static int respipe [2];
135
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{	224	{
166	closedir (wrk->dirp);	225	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
167	wrk->dirp = 0;	226	char scratch[3072];
168	}	227	struct fiemap *incmap = (struct fiemap *)scratch;
169		228
170	if (wrk->dbuf)	229	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
171	{	230	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
172	free (wrk->dbuf);	231	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
173	wrk->dbuf = 0;	232	incmap->fm_flags = fiemap->fm_flags;
174	}	233	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
175	}
176		234
177	static void worker_free (worker *wrk)	235	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;	236	return;
224		237
225	--q->size;	238	if (!incmap->fm_mapped_extents)
		239	goto done;
226		240
227	for (pri = NUM_PRI; pri--; )	241	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
228	{	242	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
229	aio_req req = q->qs[pri];	243	errno = ENOMEM;
230
231	if (req)	244	if (!fiemap)
		245	return;
		246
		247	req->ptr1 = fiemap;
		248
		249	for (count = 0; count < incmap->fm_mapped_extents; ++count)
232	{	250	{
233	if (!(q->qs[pri] = req->next))	251	struct fiemap_extent *e = incmap->fm_extents + count;
234	q->qe[pri] = 0;
235		252
236	return req;	253	if (e->fe_logical + e->fe_length >= end_offset)
		254	goto done;
		255
		256	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		257
		258	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		259	goto done;
		260
237	}	261	}
238	}	262	}
239		263
240	abort ();	264	done:
241	}	265	req->result = 0;
242		266
		267	#else
		268	errno = ENOSYS;
		269	#endif
		270	}
		271
		272	/*****************************************************************************/
		273
		274	enum {
		275	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		276	};
		277
		278	typedef eio_req *aio_req;
		279	typedef eio_req *aio_req_ornot;
		280	typedef eio_wd aio_wd;
		281
		282	static SV *on_next_submit;
		283	static int next_pri = EIO_PRI_DEFAULT;
		284	static int max_outstanding;
		285
		286	static s_epipe respipe;
		287
		288	static void req_destroy (aio_req req);
243	static void req_invoke (aio_req req);	289	static void req_cancel (aio_req req);
244	static void req_free (aio_req req);	290
		291	static void
		292	want_poll (void)
		293	{
		294	/* write a dummy byte to the pipe so fh becomes ready */
		295	s_epipe_signal (&respipe);
		296	}
		297
		298	static void
		299	done_poll (void)
		300	{
		301	/* read any signals sent by the worker threads */
		302	s_epipe_drain (&respipe);
		303	}
245		304
246	/* must be called at most once */	305	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	306	static SV *
		307	req_sv (aio_req req, HV *stash)
248	{	308	{
249	if (!req->self)	309	if (!req->self)
250	{	310	{
251	req->self = (SV *)newHV ();	311	req->self = (SV *)newHV ();
252	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	312	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
253	}	313	}
254		314
255	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	315	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
256	}	316	}
257		317
258	static aio_req SvAIO_REQ (SV *sv)	318	static SV *
		319	newSVaio_wd (aio_wd wd)
		320	{
		321	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		322	}
		323
		324	static aio_req
		325	SvAIO_REQ (SV *sv)
259	{	326	{
260	MAGIC *mg;	327	MAGIC *mg;
261		328
262	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	329	if (!SvROK (sv)
		330	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		331	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		332	&& SvSTASH (SvRV (sv)) != aio_req_stash
		333	&& !sv_derived_from (sv, "IO::AIO::REQ")))
263	croak ("object of class " AIO_REQ_KLASS " expected");	334	croak ("object of class IO::AIO::REQ expected");
264		335
265	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	336	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
266		337
267	return mg ? (aio_req)mg->mg_ptr : 0;	338	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	339	}
269		340
		341	static aio_wd
		342	SvAIO_WD (SV *sv)
		343	{
		344	if (!SvROK (sv)
		345	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		346	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		347	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		348
		349	return (aio_wd)(long)SvIVX (SvRV (sv));
		350	}
		351
		352	static SV *
		353	newmortalFH (int fd, int flags)
		354	{
		355	if (fd < 0)
		356	return &PL_sv_undef;
		357
		358	GV *gv = (GV *)sv_newmortal ();
		359	char sym[64];
		360	int symlen;
		361
		362	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		363	gv_init (gv, aio_stash, sym, symlen, 0);
		364
		365	symlen = snprintf (
		366	sym,
		367	sizeof (sym),
		368	"%s&=%d",
		369	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		370	fd
		371	);
		372
		373	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		374	? (SV *)gv : &PL_sv_undef;
		375	}
		376
		377	static void
270	static void aio_grp_feed (aio_req grp)	378	aio_grp_feed (aio_req grp)
271	{	379	{
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	380	if (grp->sv2 && SvOK (grp->sv2))
273	{	381	{
274	int old_len = grp->length;
275
276	if (grp->fh2 && SvOK (grp->fh2))
277	{
278	dSP;	382	dSP;
279		383
280	ENTER;	384	ENTER;
281	SAVETMPS;	385	SAVETMPS;
282	PUSHMARK (SP);	386	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	387	XPUSHs (req_sv (grp, aio_grp_stash));
284	PUTBACK;	388	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	389	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	390	SPAGAIN;
287	FREETMPS;	391	FREETMPS;
288	LEAVE;	392	LEAVE;
289	}
290
291	/* stop if no progress has been made */
292	if (old_len == grp->length)
293	{
294	SvREFCNT_dec (grp->fh2);
295	grp->fh2 = 0;
296	break;
297	}
298	}	393	}
299	}	394	}
300		395
301	static void aio_grp_dec (aio_req grp)	396	static void
		397	req_submit (eio_req *req)
302	{	398	{
303	--grp->length;	399	eio_submit (req);
304		400
305	/* call feeder, if applicable */	401	if (expect_false (on_next_submit))
306	aio_grp_feed (grp);
307
308	/* finish, if done */
309	if (!grp->length && grp->fd)
310	{	402	{
311	req_invoke (grp);	403	dSP;
312	req_free (grp);	404	SV *cb = sv_2mortal (on_next_submit);
		405
		406	on_next_submit = 0;
		407
		408	PUSHMARK (SP);
		409	PUTBACK;
		410	call_sv (cb, G_DISCARD | G_EVAL);
313	}	411	}
314	}	412	}
315		413
316	static void poll_wait ()	414	static int
		415	req_invoke (eio_req *req)
317	{	416	{
318	fd_set rfd;	417	if (req->flags & FLAG_SV2_RO_OFF)
		418	SvREADONLY_off (req->sv2);
319		419
320	while (nreqs)	420	if (!EIO_CANCELLED (req) && req->callback)
321	{	421	{
322	int size;
323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324	LOCK (reslock);
325	#endif
326	size = res_queue.size;
327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328	UNLOCK (reslock);
329	#endif
330
331	if (size)
332	return;
333
334	FD_ZERO(&rfd);
335	FD_SET(respipe [0], &rfd);
336
337	select (respipe [0] + 1, &rfd, 0, 0, 0);
338	}
339	}
340
341	static void req_invoke (aio_req req)
342	{
343	dSP;	422	dSP;
344		423	static SV *sv_result_cache; /* caches the result integer SV */
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	424	SV *sv_result;
346	{
347	errno = req->errorno;
348		425
349	ENTER;	426	ENTER;
350	SAVETMPS;	427	SAVETMPS;
351	PUSHMARK (SP);	428	PUSHMARK (SP);
352	EXTEND (SP, 1);	429	EXTEND (SP, 1);
353		430
		431	/* do not recreate the result IV from scratch each time */
		432	if (expect_true (sv_result_cache))
		433	{
		434	sv_result = sv_result_cache; sv_result_cache = 0;
		435	SvIV_set (sv_result, req->result);
		436	SvIOK_only (sv_result);
		437	}
		438	else
		439	{
		440	sv_result = newSViv (req->result);
		441	SvREADONLY_on (sv_result);
		442	}
		443
354	switch (req->type)	444	switch (req->type)
355	{	445	{
		446	case EIO_WD_OPEN:
		447	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		448	break;
		449
356	case REQ_READDIR:	450	case EIO_READDIR:
357	{	451	{
358	SV *rv = &PL_sv_undef;	452	SV *rv = &PL_sv_undef;
359		453
360	if (req->result >= 0)	454	if (req->result >= 0)
361	{	455	{
362	int i;	456	int i;
363	char *buf = req->data2ptr;	457	char *names = (char *)req->ptr2;
		458	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
364	AV *av = newAV ();	459	AV *av = newAV ();
365		460
366	av_extend (av, req->result - 1);	461	av_extend (av, req->result - 1);
367		462
368	for (i = 0; i < req->result; ++i)	463	for (i = 0; i < req->result; ++i)
369	{	464	{
370	SV *sv = newSVpv (buf, 0);	465	if (req->int1 & EIO_READDIR_DENTS)
		466	{
		467	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
371		468
		469	if (req->int1 & EIO_READDIR_CUSTOM2)
		470	{
		471	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		472	AV *avent = newAV ();
		473
		474	av_extend (avent, 2);
		475
		476	if (!sv_type [ent->type])
		477	{
		478	sv_type [ent->type] = newSViv (ent->type);
		479	SvREADONLY_on (sv_type [ent->type]);
		480	}
		481
		482	av_store (avent, 0, namesv);
		483	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		484	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		485
		486	av_store (av, i, newRV_noinc ((SV *)avent));
		487	}
		488	else
372	av_store (av, i, sv);	489	av_store (av, i, namesv);
		490
		491	++ent;
		492	}
		493	else
		494	{
		495	SV *name = newSVpv (names, 0);
		496	av_store (av, i, name);
373	buf += SvCUR (sv) + 1;	497	names += SvCUR (name) + 1;
		498	}
374	}	499	}
375		500
376	rv = sv_2mortal (newRV_noinc ((SV *)av));	501	rv = sv_2mortal (newRV_noinc ((SV *)av));
377	}	502	}
378		503
379	PUSHs (rv);	504	PUSHs (rv);
		505
		506	if (req->int1 & EIO_READDIR_CUSTOM1)
		507	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
380	}	508	}
381	break;	509	break;
382		510
383	case REQ_OPEN:	511	case EIO_OPEN:
		512	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		513	break;
		514
		515	case EIO_STATVFS:
		516	case EIO_FSTATVFS:
384	{	517	{
385	/* convert fd to fh */	518	SV *rv = &PL_sv_undef;
386	SV *fh;	519
		520	#ifndef _WIN32
		521	if (req->result >= 0)
		522	{
		523	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		524	HV *hv = newHV ();
		525	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		526	* chooses to make it a struct.
		527	*/
		528	unsigned long fsid = 0;
		529	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
387		530
388	PUSHs (sv_2mortal (newSViv (req->result)));	531	rv = sv_2mortal (newRV_noinc ((SV *)hv));
389	PUTBACK;
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
391	SPAGAIN;
392		532
393	fh = SvREFCNT_inc (POPs);	533	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		534	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		535	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		536	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		537	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		538	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		539	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		540	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		541	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		542	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		543	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		544	}
		545	#endif
394		546
395	PUSHMARK (SP);	547	PUSHs (rv);
396	XPUSHs (sv_2mortal (fh));
397	}	548	}
		549
398	break;	550	break;
399		551
400	case REQ_GROUP:	552	case EIO_GROUP:
401	req->fd = 2; /* mark group as finished */	553	req->int1 = 2; /* mark group as finished */
402		554
403	if (req->data)	555	if (req->sv1)
404	{	556	{
405	int i;	557	int i;
406	AV *av = (AV *)req->data;	558	AV *av = (AV *)req->sv1;
407		559
408	EXTEND (SP, AvFILL (av) + 1);	560	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	561	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	562	PUSHs (*av_fetch (av, i, 0));
411	}	563	}
412	break;	564	break;
413		565
414	case REQ_NOP:	566	case EIO_NOP:
415	case REQ_BUSY:	567	case EIO_BUSY:
416	break;	568	break;
417		569
		570	case EIO_READLINK:
		571	case EIO_REALPATH:
		572	if (req->result > 0)
		573	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		574	break;
		575
		576	case EIO_STAT:
		577	case EIO_LSTAT:
		578	case EIO_FSTAT:
		579	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		580
		581	if (!(PL_laststatval = req->result))
		582	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		583	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		584
		585	PUSHs (sv_result);
		586	break;
		587
		588	case EIO_SEEK:
		589	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		590	break;
		591
		592	case EIO_READ:
		593	{
		594	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		595	*SvEND (req->sv2) = 0;
		596	SvPOK_only (req->sv2);
		597	SvSETMAGIC (req->sv2);
		598	PUSHs (sv_result);
		599	}
		600	break;
		601
		602	case EIO_CUSTOM:
		603	if (req->feed == fiemap)
		604	{
		605	#if HAVE_FIEMAP
		606	if (!req->result)
		607	{
		608	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		609
		610	if (fiemap->fm_extent_count)
		611	{
		612	AV *av = newAV ();
		613	int i;
		614
		615	while (fiemap->fm_mapped_extents)
		616	{
		617	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		618	AV *ext_av = newAV ();
		619
		620	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		621	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		622	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		623	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		624
		625	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		626	}
		627
		628	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		629	}
		630	else
		631	{
		632	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		633	PUSHs (sv_result);
		634	}
		635	}
		636	#endif
		637	}
		638	else
		639	PUSHs (sv_result);
		640	break;
		641
		642	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		643	if (req->result > 0)
		644	SvIV_set (sv_result, 0);
		645	/* FALLTHROUGH */
		646
418	default:	647	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	648	PUSHs (sv_result);
420	break;	649	break;
421	}	650	}
422		651
		652	errno = req->errorno;
423		653
424	PUTBACK;	654	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	655	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426	SPAGAIN;	656	SPAGAIN;
		657
		658	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		659	SvREFCNT_dec (sv_result);
		660	else
		661	sv_result_cache = sv_result;
427		662
428	FREETMPS;	663	FREETMPS;
429	LEAVE;	664	LEAVE;
		665
		666	PUTBACK;
430	}	667	}
431		668
432	if (req->grp)	669	return !!SvTRUE (ERRSV);
433	{
434	aio_req grp = req->grp;
435
436	/* unlink request */
437	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
438	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
439
440	if (grp->grp_first == req)
441	grp->grp_first = req->grp_next;
442
443	aio_grp_dec (grp);
444	}
445
446	if (SvTRUE (ERRSV))
447	{
448	req_free (req);
449	croak (0);
450	}
451	}	670	}
452		671
453	static void req_free (aio_req req)	672	static void
		673	req_destroy (aio_req req)
454	{	674	{
455	if (req->self)	675	if (req->self)
456	{	676	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	677	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	678	SvREFCNT_dec (req->self);
459	}	679	}
460		680
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	681	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	682	SvREFCNT_dec (req->sv2);
		683	SvREFCNT_dec (req->sv3);
		684	SvREFCNT_dec (req->sv4);
464	SvREFCNT_dec (req->callback);	685	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466		686
467	if (req->type == REQ_READDIR)
468	free (req->data2ptr);
469
470	Safefree (req);	687	free (req);
471	}	688	}
472		689
473	static void req_cancel (aio_req req)	690	static void
		691	req_cancel_subs (aio_req grp)
474	{	692	{
475	req->flags |= FLAG_CANCELLED;
476
477	if (req->type == REQ_GROUP)	693	if (grp->type != EIO_GROUP)
		694	return;
		695
		696	SvREFCNT_dec (grp->sv2);
		697	grp->sv2 = 0;
		698
		699	eio_grp_cancel (grp);
		700	}
		701
		702	static void ecb_cold
		703	create_respipe (void)
		704	{
		705	if (s_epipe_renew (&respipe))
		706	croak ("IO::AIO: unable to initialize result pipe");
		707	}
		708
		709	static void
		710	poll_wait (void)
		711	{
		712	while (eio_nreqs ())
478	{	713	{
479	aio_req sub;	714	int size;
480		715
481	for (sub = req->grp_first; sub; sub = sub->grp_next)	716	X_LOCK (EIO_POOL->reslock);
482	req_cancel (sub);	717	size = EIO_POOL->res_queue.size;
		718	X_UNLOCK (EIO_POOL->reslock);
		719
		720	if (size)
		721	return;
		722
		723	etp_maybe_start_thread (EIO_POOL);
		724
		725	s_epipe_wait (&respipe);
483	}	726	}
484	}	727	}
485		728
486	static int poll_cb ()	729	static int
		730	poll_cb (void)
487	{	731	{
488	dSP;
489	int count = 0;
490	int do_croak = 0;
491	aio_req req;
492
493	for (;;)	732	for (;;)
494	{	733	{
495	LOCK (reslock);	734	int res = eio_poll ();
496	req = reqq_shift (&res_queue);
497		735
498	if (req)	736	if (res > 0)
		737	croak (0);
		738
		739	if (!max_outstanding || max_outstanding > eio_nreqs ())
		740	return res;
		741
		742	poll_wait ();
		743	}
		744	}
		745
		746	static void ecb_cold
		747	reinit (void)
		748	{
		749	create_respipe ();
		750
		751	if (eio_init (want_poll, done_poll) < 0)
		752	croak ("IO::AIO: unable to initialise eio library");
		753	}
		754
		755	/*****************************************************************************/
		756
		757	#if !_POSIX_MAPPED_FILES
		758	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		759	# define munmap(addr,length) EIO_ENOSYS ()
		760	#endif
		761
		762	#if !_POSIX_MEMORY_PROTECTION
		763	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		764	#endif
		765
		766	#define MMAP_MAGIC PERL_MAGIC_ext
		767
		768	static int ecb_cold
		769	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		770	{
		771	int old_errno = errno;
		772	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		773	errno = old_errno;
		774
		775	mg->mg_obj = 0; /* just in case */
		776
		777	SvREADONLY_off (sv);
		778
		779	if (SvPVX (sv) != mg->mg_ptr)
		780	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		781
		782	SvCUR_set (sv, 0);
		783	SvPVX (sv) = 0;
		784	SvOK_off (sv);
		785
		786	return 0;
		787	}
		788
		789	static MGVTBL mmap_vtbl = {
		790	0, 0, 0, 0, mmap_free
		791	};
		792
		793	/*****************************************************************************/
		794
		795	static SV *
		796	get_cb (SV *cb_sv)
		797	{
		798	SvGETMAGIC (cb_sv);
		799	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		800	}
		801
		802	static aio_req ecb_noinline
		803	dreq (SV *callback)
		804	{
		805	SV *cb_cv;
		806	aio_req req;
		807	int req_pri = next_pri;
		808	next_pri = EIO_PRI_DEFAULT;
		809
		810	cb_cv = get_cb (callback);
		811
		812	req = calloc (sizeof (*req), 1);
		813	if (!req)
		814	croak ("out of memory during eio_req allocation");
		815
		816	req->callback = SvREFCNT_inc (cb_cv);
		817	req->pri = req_pri;
		818
		819	return req;
		820	}
		821
		822	#define dREQ \
		823	aio_req req = dreq (callback); \
		824
		825	#define REQ_SEND \
		826	PUTBACK; \
		827	req_submit (req); \
		828	SPAGAIN; \
		829	\
		830	if (GIMME_V != G_VOID) \
		831	XPUSHs (req_sv (req, aio_req_stash));
		832
		833	ecb_inline void
		834	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		835	{
		836	if (expect_false (SvROK (path)))
		837	{
		838	SV *rv = SvRV (path);
		839	SV *wdob;
		840
		841	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
499	{	842	{
500	if (!res_queue.size)	843	path = AvARRAY (rv)[1];
		844	wdob = AvARRAY (rv)[0];
		845
		846	if (SvOK (wdob))
501	{	847	{
502	/* read any signals sent by the worker threads */	848	*wd = SvAIO_WD (wdob);
503	char buf [32];	849	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
504	while (read (respipe [0], buf, 32) == 32)
505	;
506	}	850	}
		851	else
		852	*wd = EIO_INVALID_WD;
507	}	853	}
508		854	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
509	UNLOCK (reslock);
510
511	if (!req)
512	break;
513
514	--nreqs;
515
516	if (req->type == REQ_QUIT)
517	started--;
518	else if (req->type == REQ_GROUP && req->length)
519	{	855	{
520	req->fd = 1; /* mark request as delayed */	856	*wd = (aio_wd)(long)SvIVX (rv);
521	continue;	857	*wdsv = SvREFCNT_inc_NN (rv);
		858	*ptr = ".";
		859	return; /* path set to "." */
522	}	860	}
523	else	861	else
524	{	862	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
525	if (req->type == REQ_READ)
526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529	SvREADONLY_off (req->data);
530
531	if (req->statdata)
532	{
533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534	PL_laststatval = req->result;
535	PL_statcache = *(req->statdata);
536	}
537
538	req_invoke (req);
539
540	count++;
541	}
542
543	req_free (req);
544	}	863	}
545		864
546	return count;	865	*pathsv = newSVsv (path);
		866	*ptr = SvPVbyte_nolen (*pathsv);
547	}	867	}
548		868
549	static void *aio_proc(void *arg);	869	static void ecb_noinline
550		870	req_set_path1 (aio_req req, SV *path)
551	static void start_thread (void)
552	{	871	{
553	worker *wrk = calloc (1, sizeof (worker));	872	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		873	}
554		874
555	if (!wrk)	875	static void ecb_noinline
556	croak ("unable to allocate worker thread data");	876	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		877	{
		878	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
557		879
558	sigset_t fullsigset, oldsigset;	880	switch (SvTYPE (rv))
559	pthread_attr_t attr;
560
561	pthread_attr_init (&attr);
562	pthread_attr_setstacksize (&attr, STACKSIZE);
563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
564
565	sigfillset (&fullsigset);
566
567	LOCK (wrklock);
568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
569
570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
571	{	881	{
572	wrk->prev = &wrk_first;	882	case SVt_PVIO:
573	wrk->next = wrk_first.next;	883	case SVt_PVLV:
574	wrk_first.next->prev = wrk;	884	case SVt_PVGV:
575	wrk_first.next = wrk;	885	req->type = type_fh;
576	started++;	886	req->sv1 = newSVsv (fh_or_path);
		887	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		888	break;
		889
		890	default:
		891	req->type = type_path;
		892	req_set_path1 (req, fh_or_path);
		893	break;
577	}	894	}
578	else
579	free (wrk);
580
581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
582	UNLOCK (wrklock);
583	}	895	}
584		896
585	static void req_send (aio_req req)	897	XS(boot_IO__AIO) ecb_cold;
586	{
587	while (started < wanted && nreqs >= started)
588	start_thread ();
589		898
590	++nreqs;	899	MODULE = IO::AIO PACKAGE = IO::AIO
591		900
592	LOCK (reqlock);	901	PROTOTYPES: ENABLE
593	reqq_push (&req_queue, req);
594	pthread_cond_signal (&reqwait);
595	UNLOCK (reqlock);
596		902
597	if (nreqs > max_outstanding)	903	BOOT:
598	for (;;)
599	{
600	poll_cb ();
601
602	if (nreqs <= max_outstanding)
603	break;
604
605	poll_wait ();
606	}
607	}
608
609	static void end_thread (void)
610	{	904	{
611	aio_req req;	905	static const struct {
		906	const char *name;
		907	IV iv;
		908	} *civ, const_iv[] = {
		909	# define const_niv(name, value) { # name, (IV) value },
		910	# define const_iv(name) { # name, (IV) name },
		911	# define const_eio(name) { # name, (IV) EIO_ ## name },
612		912
613	Newz (0, req, 1, aio_cb);	913	/* you have to re-run ./gendef0 after adding/removing any constants here */
		914	/* the first block can be undef if missing */
		915	const_iv (ENOSYS)
		916	const_iv (EXDEV)
		917	const_iv (EBADR)
614		918
615	req->type = REQ_QUIT;	919	/* for lseek */
616	req->pri = PRI_MAX + PRI_BIAS;	920	const_iv (SEEK_DATA)
		921	const_iv (SEEK_HOLE)
617		922
618	req_send (req);	923	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
619	}	924	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		925	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		926	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		927	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		928	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
620		929
621	static void min_parallel (int nthreads)	930	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
622	{	931	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
623	if (wanted < nthreads)	932	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
624	wanted = nthreads;	933	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
625	}	934	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
626		935
627	static void max_parallel (int nthreads)	936	/* the second block will be 0 when missing */
628	{	937	const_iv (O_RDONLY)
629	int cur = started;	938	const_iv (O_WRONLY)
		939	const_iv (O_RDWR)
		940	const_iv (O_CREAT)
		941	const_iv (O_TRUNC)
		942	const_iv (O_EXCL)
		943	const_iv (O_APPEND)
630		944
631	if (wanted > nthreads)	945	const_iv (O_ASYNC)
632	wanted = nthreads;	946	const_iv (O_DIRECT)
		947	const_iv (O_NOATIME)
633		948
634	while (cur > wanted)	949	const_iv (O_CLOEXEC)
635	{	950	const_iv (O_NOCTTY)
636	end_thread ();	951	const_iv (O_NOFOLLOW)
637	cur--;	952	const_iv (O_NONBLOCK)
638	}	953	const_iv (O_EXEC)
		954	const_iv (O_SEARCH)
		955	const_iv (O_DIRECTORY)
		956	const_iv (O_DSYNC)
		957	const_iv (O_RSYNC)
		958	const_iv (O_SYNC)
		959	const_iv (O_PATH)
		960	const_iv (O_TMPFILE)
		961	const_iv (O_TTY_INIT)
639		962
640	while (started > wanted)	963	const_iv (S_IFIFO)
641	{	964	const_iv (S_IFCHR)
642	poll_wait ();	965	const_iv (S_IFBLK)
643	poll_cb ();	966	const_iv (S_IFLNK)
644	}	967	const_iv (S_IFREG)
645	}	968	const_iv (S_IFDIR)
		969	const_iv (S_IFWHT)
		970	const_iv (S_IFSOCK)
		971	const_iv (S_IFMT)
646		972
647	static void create_pipe ()	973	const_iv (ST_RDONLY)
648	{	974	const_iv (ST_NOSUID)
649	if (pipe (respipe))	975	const_iv (ST_NODEV)
650	croak ("unable to initialize result pipe");	976	const_iv (ST_NOEXEC)
		977	const_iv (ST_SYNCHRONOUS)
		978	const_iv (ST_MANDLOCK)
		979	const_iv (ST_WRITE)
		980	const_iv (ST_APPEND)
		981	const_iv (ST_IMMUTABLE)
		982	const_iv (ST_NOATIME)
		983	const_iv (ST_NODIRATIME)
		984	const_iv (ST_RELATIME)
651		985
652	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	986	const_iv (PROT_NONE)
653	croak ("cannot set result pipe to nonblocking mode");	987	const_iv (PROT_EXEC)
		988	const_iv (PROT_READ)
		989	const_iv (PROT_WRITE)
654		990
655	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	991	const_iv (MAP_PRIVATE)
656	croak ("cannot set result pipe to nonblocking mode");	992	const_iv (MAP_SHARED)
657	}	993	const_iv (MAP_FIXED)
		994	const_iv (MAP_ANONYMOUS)
658		995
659	/*****************************************************************************/	996	/* linuxish */
660	/* work around various missing functions */	997	const_iv (MAP_LOCKED)
		998	const_iv (MAP_NORESERVE)
		999	const_iv (MAP_POPULATE)
		1000	const_iv (MAP_NONBLOCK)
		1001	const_iv (MAP_GROWSDOWN)
		1002	const_iv (MAP_32BIT)
		1003	const_iv (MAP_HUGETLB)
		1004	const_iv (MAP_STACK)
661		1005
662	#if !HAVE_PREADWRITE	1006	const_iv (F_DUPFD_CLOEXEC)
663	# define pread aio_pread
664	# define pwrite aio_pwrite
665		1007
666	/*	1008	const_iv (F_OFD_GETLK)
667	* make our pread/pwrite safe against themselves, but not against	1009	const_iv (F_OFD_SETLK)
668	* normal read/write by using a mutex. slows down execution a lot,	1010	const_iv (F_OFD_GETLKW)
669	* but that's your problem, not mine.
670	*/
671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
672		1011
673	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	1012	const_iv (FIFREEZE)
674	{	1013	const_iv (FITHAW)
675	ssize_t res;	1014	const_iv (FITRIM)
676	off_t ooffset;	1015	const_iv (FICLONE)
		1016	const_iv (FICLONERANGE)
		1017	const_iv (FIDEDUPERANGE)
677		1018
678	LOCK (preadwritelock);	1019	const_iv (FS_IOC_GETFLAGS)
679	ooffset = lseek (fd, 0, SEEK_CUR);	1020	const_iv (FS_IOC_SETFLAGS)
680	lseek (fd, offset, SEEK_SET);	1021	const_iv (FS_IOC_GETVERSION)
681	res = read (fd, buf, count);	1022	const_iv (FS_IOC_SETVERSION)
682	lseek (fd, ooffset, SEEK_SET);	1023	const_iv (FS_IOC_FIEMAP)
683	UNLOCK (preadwritelock);	1024	const_iv (FS_IOC_FSGETXATTR)
		1025	const_iv (FS_IOC_FSSETXATTR)
		1026	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1027	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1028	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
684		1029
685	return res;	1030	const_iv (FS_KEY_DESCRIPTOR_SIZE)
686	}
687		1031
688	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1032	const_iv (FS_SECRM_FL)
689	{	1033	const_iv (FS_UNRM_FL)
690	ssize_t res;	1034	const_iv (FS_COMPR_FL)
691	off_t ooffset;	1035	const_iv (FS_SYNC_FL)
		1036	const_iv (FS_IMMUTABLE_FL)
		1037	const_iv (FS_APPEND_FL)
		1038	const_iv (FS_NODUMP_FL)
		1039	const_iv (FS_NOATIME_FL)
		1040	const_iv (FS_DIRTY_FL)
		1041	const_iv (FS_COMPRBLK_FL)
		1042	const_iv (FS_NOCOMP_FL)
		1043	const_iv (FS_ENCRYPT_FL)
		1044	const_iv (FS_BTREE_FL)
		1045	const_iv (FS_INDEX_FL)
		1046	const_iv (FS_JOURNAL_DATA_FL)
		1047	const_iv (FS_NOTAIL_FL)
		1048	const_iv (FS_DIRSYNC_FL)
		1049	const_iv (FS_TOPDIR_FL)
		1050	const_iv (FS_FL_USER_MODIFIABLE)
692		1051
693	LOCK (preadwritelock);	1052	const_iv (FS_XFLAG_REALTIME)
694	ooffset = lseek (fd, 0, SEEK_CUR);	1053	const_iv (FS_XFLAG_PREALLOC)
695	lseek (fd, offset, SEEK_SET);	1054	const_iv (FS_XFLAG_IMMUTABLE)
696	res = write (fd, buf, count);	1055	const_iv (FS_XFLAG_APPEND)
697	lseek (fd, offset, SEEK_SET);	1056	const_iv (FS_XFLAG_SYNC)
698	UNLOCK (preadwritelock);	1057	const_iv (FS_XFLAG_NOATIME)
		1058	const_iv (FS_XFLAG_NODUMP)
		1059	const_iv (FS_XFLAG_RTINHERIT)
		1060	const_iv (FS_XFLAG_PROJINHERIT)
		1061	const_iv (FS_XFLAG_NOSYMLINKS)
		1062	const_iv (FS_XFLAG_EXTSIZE)
		1063	const_iv (FS_XFLAG_EXTSZINHERIT)
		1064	const_iv (FS_XFLAG_NODEFRAG)
		1065	const_iv (FS_XFLAG_FILESTREAM)
		1066	const_iv (FS_XFLAG_DAX)
		1067	const_iv (FS_XFLAG_HASATTR)
699		1068
700	return res;	1069	const_iv (FIEMAP_FLAG_SYNC)
701	}	1070	const_iv (FIEMAP_FLAG_XATTR)
702	#endif	1071	const_iv (FIEMAP_FLAGS_COMPAT)
		1072	const_iv (FIEMAP_EXTENT_LAST)
		1073	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1074	const_iv (FIEMAP_EXTENT_DELALLOC)
		1075	const_iv (FIEMAP_EXTENT_ENCODED)
		1076	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1077	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1078	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1079	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1080	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1081	const_iv (FIEMAP_EXTENT_MERGED)
		1082	const_iv (FIEMAP_EXTENT_SHARED)
703		1083
704	#if !HAVE_FDATASYNC	1084	const_iv (SPLICE_F_MOVE)
705	# define fdatasync fsync	1085	const_iv (SPLICE_F_NONBLOCK)
706	#endif	1086	const_iv (SPLICE_F_MORE)
		1087	const_iv (SPLICE_F_GIFT)
707		1088
708	#if !HAVE_READAHEAD	1089	/* these are libeio constants, and are independent of gendef0 */
709	# define readahead aio_readahead	1090	const_eio (SEEK_SET)
		1091	const_eio (SEEK_CUR)
		1092	const_eio (SEEK_END)
710		1093
711	static ssize_t readahead (int fd, off_t offset, size_t count)	1094	const_eio (MCL_FUTURE)
712	{	1095	const_eio (MCL_CURRENT)
713	dBUF;
714		1096
715	while (count > 0)	1097	const_eio (MS_ASYNC)
716	{	1098	const_eio (MS_INVALIDATE)
717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	1099	const_eio (MS_SYNC)
718		1100
719	pread (fd, aio_buf, len, offset);	1101	const_eio (MT_MODIFY)
720	offset += len;
721	count -= len;
722	}
723		1102
724	errno = 0;	1103	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
725	}	1104	const_eio (SYNC_FILE_RANGE_WRITE)
726	#endif	1105	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
727		1106
728	#if !HAVE_READDIR_R	1107	const_eio (FALLOC_FL_KEEP_SIZE)
729	# define readdir_r aio_readdir_r	1108	const_eio (FALLOC_FL_PUNCH_HOLE)
		1109	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1110	const_eio (FALLOC_FL_ZERO_RANGE)
		1111	const_eio (FALLOC_FL_INSERT_RANGE)
		1112	const_eio (FALLOC_FL_UNSHARE_RANGE)
730		1113
731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1114	const_eio (RENAME_NOREPLACE)
732		1115	const_eio (RENAME_EXCHANGE)
733	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1116	const_eio (RENAME_WHITEOUT)
734	{
735	struct dirent *e;
736	int errorno;
737		1117
738	LOCK (readdirlock);	1118	const_eio (READDIR_DENTS)
		1119	const_eio (READDIR_DIRS_FIRST)
		1120	const_eio (READDIR_STAT_ORDER)
		1121	const_eio (READDIR_FOUND_UNKNOWN)
739		1122
740	e = readdir (dirp);	1123	const_eio (DT_UNKNOWN)
741	errorno = errno;	1124	const_eio (DT_FIFO)
742		1125	const_eio (DT_CHR)
743	if (e)	1126	const_eio (DT_DIR)
744	{	1127	const_eio (DT_BLK)
745	*res = ent;	1128	const_eio (DT_REG)
746	strcpy (ent->d_name, e->d_name);	1129	const_eio (DT_LNK)
747	}	1130	const_eio (DT_SOCK)
748	else	1131	const_eio (DT_WHT)
749	*res = 0;
750
751	UNLOCK (readdirlock);
752
753	errno = errorno;
754	return e ? 0 : -1;
755	}
756	#endif
757
758	/* sendfile always needs emulation */
759	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
760	{
761	ssize_t res;
762
763	if (!count)
764	return 0;
765
766	#if HAVE_SENDFILE
767	# if __linux
768	res = sendfile (ofd, ifd, &offset, count);
769
770	# elif __freebsd
771	/*
772	* Of course, the freebsd sendfile is a dire hack with no thoughts
773	* wasted on making it similar to other I/O functions.
774	*/
775	{
776	off_t sbytes;
777	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778
779	if (res < 0 && sbytes)
780	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
781	res = sbytes;
782	}	1132	};
783		1133
784	# elif __hpux	1134	aio_stash = gv_stashpv ("IO::AIO" , 1);
785	res = sendfile (ofd, ifd, offset, count, 0, 0);	1135	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1136	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1137	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
786		1138
787	# elif __solaris	1139	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
788	{	1140	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
789	struct sendfilevec vec;
790	size_t sbytes;
791		1141
792	vec.sfv_fd = ifd;	1142	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
793	vec.sfv_flag = 0;
794	vec.sfv_off = offset;
795	vec.sfv_len = count;
796		1143
797	res = sendfilev (ofd, &vec, 1, &sbytes);	1144	reinit ();
		1145	}
798		1146
799	if (res < 0 && sbytes)	1147	void
		1148	reinit ()
		1149	PROTOTYPE:
		1150
		1151	void
		1152	max_poll_reqs (unsigned int nreqs)
		1153	PROTOTYPE: $
		1154	CODE:
		1155	eio_set_max_poll_reqs (nreqs);
		1156
		1157	void
		1158	max_poll_time (double nseconds)
		1159	PROTOTYPE: $
		1160	CODE:
		1161	eio_set_max_poll_time (nseconds);
		1162
		1163	void
		1164	min_parallel (unsigned int nthreads)
		1165	PROTOTYPE: $
		1166	CODE:
		1167	eio_set_min_parallel (nthreads);
		1168
		1169	void
		1170	max_parallel (unsigned int nthreads)
		1171	PROTOTYPE: $
		1172	CODE:
		1173	eio_set_max_parallel (nthreads);
		1174
		1175	void
		1176	max_idle (unsigned int nthreads)
		1177	PROTOTYPE: $
		1178	CODE:
		1179	eio_set_max_idle (nthreads);
		1180
		1181	void
		1182	idle_timeout (unsigned int seconds)
		1183	PROTOTYPE: $
		1184	CODE:
		1185	eio_set_idle_timeout (seconds);
		1186
		1187	void
		1188	max_outstanding (unsigned int maxreqs)
		1189	PROTOTYPE: $
		1190	CODE:
		1191	max_outstanding = maxreqs;
		1192
		1193	void
		1194	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
		1195	PPCODE:
		1196	{
		1197	dREQ;
		1198
		1199	req->type = EIO_WD_OPEN;
		1200	req_set_path1 (req, pathname);
		1201
		1202	REQ_SEND;
		1203	}
		1204
		1205	void
		1206	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1207	PPCODE:
		1208	{
		1209	dREQ;
		1210
		1211	req->type = EIO_OPEN;
		1212	req_set_path1 (req, pathname);
		1213	req->int1 = flags;
		1214	req->int2 = mode;
		1215
		1216	REQ_SEND;
		1217	}
		1218
		1219	void
		1220	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
		1221	ALIAS:
		1222	aio_fsync = EIO_FSYNC
		1223	aio_fdatasync = EIO_FDATASYNC
		1224	aio_syncfs = EIO_SYNCFS
		1225	PPCODE:
		1226	{
		1227	int fd = s_fileno_croak (fh, 0);
		1228	dREQ;
		1229
		1230	req->type = ix;
		1231	req->sv1 = newSVsv (fh);
		1232	req->int1 = fd;
		1233
		1234	REQ_SEND;
		1235	}
		1236
		1237	void
		1238	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1239	PPCODE:
		1240	{
		1241	int fd = s_fileno_croak (fh, 0);
		1242	dREQ;
		1243
		1244	req->type = EIO_SYNC_FILE_RANGE;
		1245	req->sv1 = newSVsv (fh);
		1246	req->int1 = fd;
		1247	req->offs = offset;
800	res = sbytes;	1248	req->size = nbytes;
801	}	1249	req->int2 = flags;
802		1250
803	# endif	1251	REQ_SEND;
		1252	}
		1253
		1254	void
		1255	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1256	PPCODE:
		1257	{
		1258	int fd = s_fileno_croak (fh, 0);
		1259	dREQ;
		1260
		1261	req->type = EIO_FALLOCATE;
		1262	req->sv1 = newSVsv (fh);
		1263	req->int1 = fd;
		1264	req->int2 = mode;
		1265	req->offs = offset;
		1266	req->size = len;
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1273	PPCODE:
		1274	{
		1275	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1276	int fd = s_fileno_croak (fh, 0);
		1277	dREQ;
		1278
		1279	if (expect_false (close_fd < 0))
		1280	{
		1281	int pipefd [2];
		1282
		1283	if (
		1284	#ifdef _WIN32
		1285	_pipe (pipefd, 1, _O_BINARY) < 0
804	#else	1286	#else
805	res = -1;	1287	pipe (pipefd) < 0
806	errno = ENOSYS;	1288	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
807	#endif	1289	#endif
808		1290	|| close (pipefd [1]) < 0
809	if (res < 0
810	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
811	#if __solaris
812	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
813	#endif
814	)
815	)
816	{
817	/* emulate sendfile. this is a major pain in the ass */
818	dBUF;
819
820	res = 0;
821
822	while (count)
823	{
824	ssize_t cnt;
825
826	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
827
828	if (cnt <= 0)
829	{	1291	)
830	if (cnt && !res) res = -1;	1292	abort (); /*D*/
831	break;
832	}
833		1293
834	cnt = write (ofd, aio_buf, cnt);	1294	close_fd = pipefd [0];
835
836	if (cnt <= 0)
837	{
838	if (cnt && !res) res = -1;
839	break;
840	}
841
842	offset += cnt;
843	res += cnt;
844	count -= cnt;
845	}
846	}
847
848	return res;
849	}
850
851	/* read a full directory */
852	static void scandir_ (aio_req req, worker *self)
853	{
854	DIR *dirp;
855	union
856	{
857	struct dirent d;
858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
859	} *u;
860	struct dirent *entp;
861	char *name, *names;
862	int memlen = 4096;
863	int memofs = 0;
864	int res = 0;
865	int errorno;
866
867	LOCK (wrklock);
868	self->dirp = dirp = opendir (req->dataptr);
869	self->dbuf = u = malloc (sizeof (*u));
870	UNLOCK (wrklock);
871
872	req->data2ptr = names = malloc (memlen);
873
874	if (dirp && u && names)
875	for (;;)
876	{
877	errno = 0;
878	readdir_r (dirp, &u->d, &entp);
879
880	if (!entp)
881	break;
882
883	name = entp->d_name;
884
885	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
886	{
887	int len = strlen (name) + 1;
888
889	res++;
890
891	while (memofs + len > memlen)
892	{
893	memlen *= 2;
894	LOCK (wrklock);
895	req->data2ptr = names = realloc (names, memlen);
896	UNLOCK (wrklock);
897
898	if (!names)
899	break;
900	}
901
902	memcpy (names + memofs, name, len);
903	memofs += len;
904	}	1295	}
905	}
906		1296
907	if (errno)	1297	req->type = EIO_DUP2;
908	res = -1;	1298	req->int1 = close_fd;
909		1299	req->sv2 = newSVsv (fh);
910	req->result = res;	1300	req->int2 = fd;
911	}
912		1301
913	/*****************************************************************************/	1302	REQ_SEND;
914
915	static void *aio_proc (void *thr_arg)
916	{
917	aio_req req;
918	int type;
919	worker *self = (worker *)thr_arg;
920
921	do
922	{
923	LOCK (reqlock);
924
925	for (;;)
926	{
927	self->req = req = reqq_shift (&req_queue);
928
929	if (req)
930	break;
931
932	pthread_cond_wait (&reqwait, &reqlock);
933	}
934
935	UNLOCK (reqlock);
936
937	errno = 0; /* strictly unnecessary */
938	type = req->type; /* remember type for QUIT check */
939
940	if (!(req->flags & FLAG_CANCELLED))
941	switch (type)
942	{
943	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
944	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
945
946	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
947	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
948
949	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
950	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
951	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
952
953	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
954	case REQ_CLOSE: req->result = close (req->fd); break;
955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
956	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
959	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
960
961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
962	case REQ_FSYNC: req->result = fsync (req->fd); break;
963	case REQ_READDIR: scandir_ (req, self); break;
964
965	case REQ_BUSY:
966	{
967	struct timeval tv;
968
969	tv.tv_sec = req->fd;
970	tv.tv_usec = req->fd2;
971
972	req->result = select (0, 0, 0, 0, &tv);
973	}
974
975	case REQ_GROUP:
976	case REQ_NOP:
977	case REQ_QUIT:
978	break;
979
980	default:
981	req->result = ENOSYS;
982	break;
983	}
984
985	req->errorno = errno;
986
987	LOCK (reslock);
988
989	if (!reqq_push (&res_queue, req))
990	/* write a dummy byte to the pipe so fh becomes ready */
991	write (respipe [1], &respipe, 1);
992
993	self->req = 0;
994	worker_clear (self);
995
996	UNLOCK (reslock);
997	}
998	while (type != REQ_QUIT);
999
1000	LOCK (wrklock);
1001	worker_free (self);
1002	UNLOCK (wrklock);
1003
1004	return 0;
1005	}	1303	}
1006		1304
1007	/*****************************************************************************/
1008
1009	static void atfork_prepare (void)
1010	{
1011	LOCK (wrklock);
1012	LOCK (reqlock);
1013	LOCK (reslock);
1014	#if !HAVE_PREADWRITE
1015	LOCK (preadwritelock);
1016	#endif
1017	#if !HAVE_READDIR_R
1018	LOCK (readdirlock);
1019	#endif
1020	}
1021
1022	static void atfork_parent (void)
1023	{
1024	#if !HAVE_READDIR_R
1025	UNLOCK (readdirlock);
1026	#endif
1027	#if !HAVE_PREADWRITE
1028	UNLOCK (preadwritelock);
1029	#endif
1030	UNLOCK (reslock);
1031	UNLOCK (reqlock);
1032	UNLOCK (wrklock);
1033	}
1034
1035	static void atfork_child (void)
1036	{
1037	aio_req prv;
1038
1039	while (prv = reqq_shift (&req_queue))
1040	req_free (prv);
1041
1042	while (prv = reqq_shift (&res_queue))
1043	req_free (prv);
1044
1045	while (wrk_first.next != &wrk_first)
1046	{
1047	worker *wrk = wrk_first.next;
1048
1049	if (wrk->req)
1050	req_free (wrk->req);
1051
1052	worker_clear (wrk);
1053	worker_free (wrk);
1054	}
1055
1056	started = 0;
1057	nreqs = 0;
1058
1059	close (respipe [0]);
1060	close (respipe [1]);
1061	create_pipe ();
1062
1063	atfork_parent ();
1064	}
1065
1066	#define dREQ \
1067	aio_req req; \
1068	int req_pri = next_pri; \
1069	next_pri = DEFAULT_PRI + PRI_BIAS; \
1070	\
1071	if (SvOK (callback) && !SvROK (callback)) \
1072	croak ("callback must be undef or of reference type"); \
1073	\
1074	Newz (0, req, 1, aio_cb); \
1075	if (!req) \
1076	croak ("out of memory during aio_req allocation"); \
1077	\
1078	req->callback = newSVsv (callback); \
1079	req->pri = req_pri
1080
1081	#define REQ_SEND \
1082	req_send (req); \
1083	\
1084	if (GIMME_V != G_VOID) \
1085	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1086
1087	MODULE = IO::AIO PACKAGE = IO::AIO
1088
1089	PROTOTYPES: ENABLE
1090
1091	BOOT:
1092	{
1093	HV *stash = gv_stashpv ("IO::AIO", 1);
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1097
1098	create_pipe ();
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1100	}
1101
1102	void	1305	void
1103	min_parallel (nthreads)	1306	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
1104	int nthreads
1105	PROTOTYPE: $
1106
1107	void
1108	max_parallel (nthreads)
1109	int nthreads
1110	PROTOTYPE: $
1111
1112	int
1113	max_outstanding (nreqs)
1114	int nreqs
1115	PROTOTYPE: $
1116	CODE:	1307	PPCODE:
1117	RETVAL = max_outstanding;
1118	max_outstanding = nreqs;
1119
1120	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1122	SV * pathname
1123	int flags
1124	int mode
1125	SV * callback
1126	PROTOTYPE: $$$;$
1127	PPCODE:
1128	{	1308	{
		1309	int fd = s_fileno_croak (fh, 0);
1129	dREQ;	1310	dREQ;
1130		1311
1131	req->type = REQ_OPEN;	1312	req->type = EIO_SEEK;
1132	req->data = newSVsv (pathname);	1313	req->sv1 = newSVsv (fh);
1133	req->dataptr = SvPVbyte_nolen (req->data);	1314	req->int1 = fd;
1134	req->fd = flags;	1315	req->offs = SvVAL64 (offset);
1135	req->mode = mode;	1316	req->int2 = whence;
1136		1317
1137	REQ_SEND;	1318	REQ_SEND;
1138	}	1319	}
1139		1320
1140	void	1321	void
1141	aio_close (fh,callback=&PL_sv_undef)	1322	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1142	SV * fh
1143	SV * callback
1144	PROTOTYPE: $;$
1145	ALIAS:	1323	ALIAS:
1146	aio_close = REQ_CLOSE
1147	aio_fsync = REQ_FSYNC
1148	aio_fdatasync = REQ_FDATASYNC
1149	PPCODE:
1150	{
1151	dREQ;
1152
1153	req->type = ix;
1154	req->fh = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1156
1157	REQ_SEND (req);
1158	}
1159
1160	void
1161	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
1162	SV * fh
1163	UV offset
1164	UV length
1165	SV * data
1166	UV dataoffset
1167	SV * callback
1168	ALIAS:
1169	aio_read = REQ_READ	1324	aio_read = EIO_READ
1170	aio_write = REQ_WRITE	1325	aio_write = EIO_WRITE
1171	PROTOTYPE: $$$$$;$
1172	PPCODE:	1326	PPCODE:
1173	{	1327	{
1174	aio_req req;
1175	STRLEN svlen;	1328	STRLEN svlen;
		1329	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1176	char *svptr = SvPVbyte (data, svlen);	1330	char *svptr = SvPVbyte (data, svlen);
1177		1331	UV len = SvUV (length);
1178	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);
1180		1332
1181	if (dataoffset < 0)	1333	if (dataoffset < 0)
1182	dataoffset += svlen;	1334	dataoffset += svlen;
1183		1335
1184	if (dataoffset < 0 || dataoffset > svlen)	1336	if (dataoffset < 0 || dataoffset > svlen)
1185	croak ("data offset outside of string");	1337	croak ("dataoffset outside of data scalar");
1186		1338
1187	if (ix == REQ_WRITE)	1339	if (ix == EIO_WRITE)
1188	{	1340	{
1189	/* write: check length and adjust. */	1341	/* write: check length and adjust. */
1190	if (length < 0 || length + dataoffset > svlen)	1342	if (!SvOK (length) || len + dataoffset > svlen)
1191	length = svlen - dataoffset;	1343	len = svlen - dataoffset;
1192	}	1344	}
1193	else	1345	else
1194	{	1346	{
1195	/* read: grow scalar as necessary */	1347	/* read: check type and grow scalar as necessary */
		1348	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1196	svptr = SvGROW (data, length + dataoffset);	1349	svptr = sv_grow (data, len + dataoffset + 1);
		1350	else if (SvCUR (data) < len + dataoffset)
		1351	croak ("length + dataoffset outside of scalar, and cannot grow");
1197	}	1352	}
1198
1199	if (length < 0)
1200	croak ("length must not be negative");
1201		1353
1202	{	1354	{
1203	dREQ;	1355	dREQ;
1204		1356
1205	req->type = ix;	1357	req->type = ix;
1206	req->fh = newSVsv (fh);	1358	req->sv1 = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1359	req->int1 = fd;
1208	: IoOFP (sv_2io (fh)));	1360	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209	req->offset = offset;	1361	req->size = len;
1210	req->length = length;
1211	req->data = SvREFCNT_inc (data);	1362	req->sv2 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	1363	req->ptr2 = (char *)svptr + dataoffset;
		1364	req->stroffset = dataoffset;
1213		1365
1214	if (!SvREADONLY (data))	1366	if (!SvREADONLY (data))
1215	{	1367	{
1216	SvREADONLY_on (data);	1368	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	1369	req->flags |= FLAG_SV2_RO_OFF;
1218	}	1370	}
1219		1371
1220	REQ_SEND;	1372	REQ_SEND;
1221	}	1373	}
1222	}	1374	}
1223		1375
1224	void	1376	void
1225	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1377	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1226	SV * out_fh	1378	ALIAS:
1227	SV * in_fh	1379	aio_ioctl = EIO_IOCTL
1228	UV in_offset	1380	aio_fcntl = EIO_FCNTL
1229	UV length
1230	SV * callback
1231	PROTOTYPE: $$$$;$
1232	PPCODE:	1381	PPCODE:
1233	{	1382	{
1234	dREQ;	1383	int fd = s_fileno_croak (fh, 0);
		1384	char *svptr;
1235		1385
1236	req->type = REQ_SENDFILE;	1386	if (SvPOK (arg) || !SvNIOK (arg))
1237	req->fh = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1239	req->fh2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1241	req->offset = in_offset;
1242	req->length = length;
1243
1244	REQ_SEND;
1245	}
1246
1247	void
1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
1249	SV * fh
1250	UV offset
1251	IV length
1252	SV * callback
1253	PROTOTYPE: $$$;$
1254	PPCODE:
1255	{
1256	dREQ;
1257
1258	req->type = REQ_READAHEAD;
1259	req->fh = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
1261	req->offset = offset;
1262	req->length = length;
1263
1264	REQ_SEND;
1265	}
1266
1267	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)
1269	SV * fh_or_path
1270	SV * callback
1271	ALIAS:
1272	aio_stat = REQ_STAT
1273	aio_lstat = REQ_LSTAT
1274	PPCODE:
1275	{
1276	dREQ;
1277
1278	New (0, req->statdata, 1, Stat_t);
1279	if (!req->statdata)
1280	{	1387	{
1281	req_free (req);	1388	STRLEN svlen;
1282	croak ("out of memory during aio_req->statdata allocation");	1389	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1283	}	1390	#ifdef IOCPARM_LEN
		1391	STRLEN need = IOCPARM_LEN (request);
		1392	#else
		1393	STRLEN need = 256;
		1394	#endif
1284		1395
1285	if (SvPOK (fh_or_path))	1396	if (svlen < need)
1286	{	1397	svptr = SvGROW (arg, need);
1287	req->type = ix;
1288	req->data = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);
1290	}	1398	}
1291	else	1399	else
		1400	svptr = (char *)SvIV (arg);
		1401
1292	{	1402	{
		1403	dREQ;
		1404
1293	req->type = REQ_FSTAT;	1405	req->type = ix;
1294	req->fh = newSVsv (fh_or_path);	1406	req->sv1 = newSVsv (fh);
1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1407	req->int1 = fd;
		1408	req->int2 = (long)request;
		1409	req->sv2 = SvREFCNT_inc (arg);
		1410	req->ptr2 = svptr;
		1411
		1412	REQ_SEND;
1296	}	1413	}
		1414	}
		1415
		1416	void
		1417	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1418	ALIAS:
		1419	aio_readlink = EIO_READLINK
		1420	aio_realpath = EIO_REALPATH
		1421	PPCODE:
		1422	{
		1423	dREQ;
		1424
		1425	req->type = ix;
		1426	req_set_path1 (req, pathname);
1297		1427
1298	REQ_SEND;	1428	REQ_SEND;
1299	}	1429	}
1300		1430
1301	void	1431	void
1302	aio_unlink (pathname,callback=&PL_sv_undef)	1432	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
1303	SV * pathname	1433	PPCODE:
1304	SV * callback	1434	{
		1435	int ifd = s_fileno_croak (in_fh , 0);
		1436	int ofd = s_fileno_croak (out_fh, 1);
		1437	dREQ;
		1438
		1439	req->type = EIO_SENDFILE;
		1440	req->sv1 = newSVsv (out_fh);
		1441	req->int1 = ofd;
		1442	req->sv2 = newSVsv (in_fh);
		1443	req->int2 = ifd;
		1444	req->offs = in_offset;
		1445	req->size = length;
		1446
		1447	REQ_SEND;
		1448	}
		1449
		1450	void
		1451	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1452	PPCODE:
		1453	{
		1454	int fd = s_fileno_croak (fh, 0);
		1455	dREQ;
		1456
		1457	req->type = EIO_READAHEAD;
		1458	req->sv1 = newSVsv (fh);
		1459	req->int1 = fd;
		1460	req->offs = offset;
		1461	req->size = length;
		1462
		1463	REQ_SEND;
		1464	}
		1465
		1466	void
		1467	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
1305	ALIAS:	1468	ALIAS:
		1469	aio_stat = EIO_STAT
		1470	aio_lstat = EIO_LSTAT
		1471	aio_statvfs = EIO_STATVFS
		1472	PPCODE:
		1473	{
		1474	dREQ;
		1475
		1476	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1477
		1478	REQ_SEND;
		1479	}
		1480
		1481	UV
		1482	major (UV dev)
		1483	ALIAS:
		1484	minor = 1
		1485	CODE:
		1486	RETVAL = ix ? minor (dev) : major (dev);
		1487	OUTPUT:
		1488	RETVAL
		1489
		1490	UV
		1491	makedev (UV maj, UV min)
		1492	CODE:
		1493	RETVAL = makedev (maj, min);
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void
		1498	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1499	PPCODE:
		1500	{
		1501	dREQ;
		1502
		1503	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1504	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1505	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1506
		1507	REQ_SEND;
		1508	}
		1509
		1510	void
		1511	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1512	PPCODE:
		1513	{
		1514	dREQ;
		1515
		1516	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1517	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1518
		1519	REQ_SEND;
		1520	}
		1521
		1522	void
		1523	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1524	PPCODE:
		1525	{
		1526	dREQ;
		1527
		1528	req->int2 = mode;
		1529	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1530
		1531	REQ_SEND;
		1532	}
		1533
		1534	void
		1535	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1536	PPCODE:
		1537	{
		1538	dREQ;
		1539
		1540	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1541	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1542	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1543
		1544	REQ_SEND;
		1545	}
		1546
		1547	void
		1548	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1549	PPCODE:
		1550	{
		1551	dREQ;
		1552
		1553	req->type = EIO_READDIR;
		1554	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1555
		1556	if (flags & EIO_READDIR_DENTS)
		1557	req->int1 |= EIO_READDIR_CUSTOM2;
		1558
		1559	req_set_path1 (req, pathname);
		1560
		1561	REQ_SEND;
		1562	}
		1563
		1564	void
		1565	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1566	PPCODE:
		1567	{
		1568	dREQ;
		1569
		1570	req->type = EIO_MKDIR;
		1571	req->int2 = mode;
		1572	req_set_path1 (req, pathname);
		1573
		1574	REQ_SEND;
		1575	}
		1576
		1577	void
		1578	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1579	ALIAS:
1306	aio_unlink = REQ_UNLINK	1580	aio_unlink = EIO_UNLINK
1307	aio_rmdir = REQ_RMDIR	1581	aio_rmdir = EIO_RMDIR
1308	aio_readdir = REQ_READDIR	1582	aio_readdir = EIO_READDIR
1309	PPCODE:	1583	PPCODE:
1310	{	1584	{
1311	dREQ;	1585	dREQ;
1312		1586
1313	req->type = ix;	1587	req->type = ix;
1314	req->data = newSVsv (pathname);	1588	req_set_path1 (req, pathname);
1315	req->dataptr = SvPVbyte_nolen (req->data);	1589
1316
1317	REQ_SEND;	1590	REQ_SEND;
1318	}	1591	}
1319		1592
1320	void	1593	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1594	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1322	SV * oldpath
1323	SV * newpath
1324	SV * callback
1325	ALIAS:	1595	ALIAS:
1326	aio_link = REQ_LINK	1596	aio_link = EIO_LINK
1327	aio_symlink = REQ_SYMLINK	1597	aio_symlink = EIO_SYMLINK
1328	aio_rename = REQ_RENAME	1598	aio_rename = EIO_RENAME
1329	PPCODE:	1599	PPCODE:
1330	{	1600	{
		1601	eio_wd wd2 = 0;
1331	dREQ;	1602	dREQ;
1332		1603
1333	req->type = ix;	1604	req->type = ix;
1334	req->fh = newSVsv (oldpath);	1605	req_set_path1 (req, oldpath);
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1606	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1336	req->data = newSVsv (newpath);	1607	req->int3 = (long)wd2;
1337	req->dataptr = SvPVbyte_nolen (req->data);
1338		1608
1339	REQ_SEND;	1609	REQ_SEND;
1340	}	1610	}
1341		1611
1342	void	1612	void
1343	aio_busy (delay,callback=&PL_sv_undef)	1613	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1344	double delay
1345	SV * callback
1346	PPCODE:	1614	PPCODE:
1347	{	1615	{
		1616	eio_wd wd2 = 0;
1348	dREQ;	1617	dREQ;
1349		1618
1350	req->type = REQ_BUSY;	1619	req->type = EIO_RENAME;
1351	req->fd = delay < 0. ? 0 : delay;	1620	req_set_path1 (req, oldpath);
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1621	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1353		1622	req->int2 = flags;
		1623	req->int3 = (long)wd2;
		1624
1354	REQ_SEND;	1625	REQ_SEND;
1355	}	1626	}
1356		1627
1357	void	1628	void
1358	aio_group (callback=&PL_sv_undef)	1629	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1359	SV * callback	1630	PPCODE:
1360	PROTOTYPE: ;$	1631	{
		1632	dREQ;
		1633
		1634	req->type = EIO_MKNOD;
		1635	req->int2 = (mode_t)mode;
		1636	req->offs = dev;
		1637	req_set_path1 (req, pathname);
		1638
		1639	REQ_SEND;
		1640	}
		1641
		1642	void
		1643	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1644	ALIAS:
		1645	aio_mtouch = EIO_MTOUCH
		1646	aio_msync = EIO_MSYNC
1361	PPCODE:	1647	PPCODE:
1362	{	1648	{
		1649	STRLEN svlen;
		1650	char *svptr = SvPVbyte (data, svlen);
		1651	UV len = SvUV (length);
		1652
		1653	if (flags < 0)
		1654	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1655
		1656	if (offset < 0)
		1657	offset += svlen;
		1658
		1659	if (offset < 0 || offset > svlen)
		1660	croak ("offset outside of scalar");
		1661
		1662	if (!SvOK (length) || len + offset > svlen)
		1663	len = svlen - offset;
		1664
		1665	{
		1666	dREQ;
		1667
		1668	req->type = ix;
		1669	req->sv2 = SvREFCNT_inc (data);
		1670	req->ptr2 = (char *)svptr + offset;
		1671	req->size = len;
		1672	req->int1 = flags;
		1673
		1674	REQ_SEND;
		1675	}
		1676	}
		1677
		1678	void
		1679	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1680	PPCODE:
		1681	{
		1682	STRLEN svlen;
		1683	char *svptr = SvPVbyte (data, svlen);
		1684	UV len = SvUV (length);
		1685
		1686	if (offset < 0)
		1687	offset += svlen;
		1688
		1689	if (offset < 0 || offset > svlen)
		1690	croak ("offset outside of scalar");
		1691
		1692	if (!SvOK (length) || len + offset > svlen)
		1693	len = svlen - offset;
		1694
		1695	{
		1696	dREQ;
		1697
		1698	req->type = EIO_MLOCK;
		1699	req->sv2 = SvREFCNT_inc (data);
		1700	req->ptr2 = (char *)svptr + offset;
		1701	req->size = len;
		1702
		1703	REQ_SEND;
		1704	}
		1705	}
		1706
		1707	void
		1708	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
		1712
		1713	req->type = EIO_MLOCKALL;
		1714	req->int1 = flags;
		1715
		1716	REQ_SEND;
		1717	}
		1718
		1719	void
		1720	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1721	PPCODE:
		1722	{
		1723	int fd = s_fileno_croak (fh, 0);
1363	dREQ;	1724	dREQ;
1364		1725
1365	req->type = REQ_GROUP;	1726	req->type = EIO_CUSTOM;
1366	req_send (req);	1727	req->sv1 = newSVsv (fh);
		1728	req->int1 = fd;
1367		1729
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1730	req->feed = fiemap;
1369	}	1731	#if HAVE_FIEMAP
		1732	/* keep our fingers crossed that the next two types are 64 bit */
		1733	req->offs = start;
		1734	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1735	req->int2 = flags;
		1736	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1737	#endif
1370		1738
		1739	REQ_SEND;
		1740	}
		1741
1371	void	1742	void
1372	aio_nop (callback=&PL_sv_undef)	1743	aio_busy (double delay, SV *callback = &PL_sv_undef)
1373	SV * callback
1374	PPCODE:	1744	PPCODE:
1375	{	1745	{
1376	dREQ;	1746	dREQ;
1377		1747
1378	req->type = REQ_NOP;	1748	req->type = EIO_BUSY;
		1749	req->nv1 = delay < 0. ? 0. : delay;
1379		1750
1380	REQ_SEND;	1751	REQ_SEND;
1381	}	1752	}
1382		1753
1383	void	1754	void
1384	aioreq_pri (int pri = DEFAULT_PRI)	1755	aio_group (SV *callback = &PL_sv_undef)
1385	CODE:	1756	PPCODE:
		1757	{
		1758	dREQ;
		1759
		1760	req->type = EIO_GROUP;
		1761
		1762	PUTBACK;
		1763	req_submit (req);
		1764	SPAGAIN;
		1765
		1766	XPUSHs (req_sv (req, aio_grp_stash));
		1767	}
		1768
		1769	void
		1770	aio_nop (SV *callback = &PL_sv_undef)
		1771	ALIAS:
		1772	aio_nop = EIO_NOP
		1773	aio_sync = EIO_SYNC
		1774	PPCODE:
		1775	{
		1776	dREQ;
		1777
		1778	req->type = ix;
		1779
		1780	REQ_SEND;
		1781	}
		1782
		1783	int
		1784	aioreq_pri (int pri = NO_INIT)
		1785	CODE:
		1786	RETVAL = next_pri;
		1787	if (items > 0)
		1788	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1789	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1790	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1791	next_pri = pri;
		1792	}
		1793	OUTPUT:
		1794	RETVAL
1389		1795
1390	void	1796	void
1391	aioreq_nice (int nice = 0)	1797	aioreq_nice (int nice = 0)
1392	CODE:	1798	CODE:
1393	nice = next_pri - nice;	1799	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1800	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1801	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1802	next_pri = nice;
1397		1803
1398	void	1804	void
1399	flush ()	1805	flush ()
1400	PROTOTYPE:
1401	CODE:	1806	CODE:
1402	while (nreqs)	1807	while (eio_nreqs ())
1403	{	1808	{
1404	poll_wait ();	1809	poll_wait ();
1405	poll_cb ();	1810	poll_cb ();
1406	}	1811	}
1407		1812
1408	void	1813	int
1409	poll()	1814	poll ()
1410	PROTOTYPE:
1411	CODE:	1815	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();	1816	poll_wait ();
1415	poll_cb ();	1817	RETVAL = poll_cb ();
1416	}
1417
1418	int
1419	poll_fileno()
1420	PROTOTYPE:
1421	CODE:
1422	RETVAL = respipe [0];
1423	OUTPUT:	1818	OUTPUT:
1424	RETVAL	1819	RETVAL
1425		1820
1426	int	1821	int
		1822	poll_fileno ()
		1823	CODE:
		1824	RETVAL = s_epipe_fd (&respipe);
		1825	OUTPUT:
		1826	RETVAL
		1827
		1828	int
1427	poll_cb(...)	1829	poll_cb (...)
1428	PROTOTYPE:	1830	PROTOTYPE:
1429	CODE:	1831	CODE:
1430	RETVAL = poll_cb ();	1832	RETVAL = poll_cb ();
1431	OUTPUT:	1833	OUTPUT:
1432	RETVAL	1834	RETVAL
1433		1835
1434	void	1836	void
1435	poll_wait()	1837	poll_wait ()
1436	PROTOTYPE:
1437	CODE:	1838	CODE:
1438	if (nreqs)
1439	poll_wait ();	1839	poll_wait ();
1440		1840
1441	int	1841	int
1442	nreqs()	1842	nreqs ()
1443	PROTOTYPE:
1444	CODE:	1843	CODE:
1445	RETVAL = nreqs;	1844	RETVAL = eio_nreqs ();
1446	OUTPUT:	1845	OUTPUT:
1447	RETVAL	1846	RETVAL
1448		1847
		1848	int
		1849	nready ()
		1850	CODE:
		1851	RETVAL = eio_nready ();
		1852	OUTPUT:
		1853	RETVAL
		1854
		1855	int
		1856	npending ()
		1857	CODE:
		1858	RETVAL = eio_npending ();
		1859	OUTPUT:
		1860	RETVAL
		1861
		1862	int
		1863	nthreads ()
		1864	CODE:
		1865	RETVAL = eio_nthreads ();
		1866	OUTPUT:
		1867	RETVAL
		1868
		1869	int
		1870	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1871	CODE:
		1872	RETVAL = posix_fadvise (fh, offset, length, advice);
		1873	OUTPUT:
		1874	RETVAL
		1875
		1876	IV
		1877	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1878	CODE:
		1879	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1880	OUTPUT:
		1881	RETVAL
		1882
		1883	void
		1884	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1885	PPCODE:
		1886	sv_unmagic (scalar, MMAP_MAGIC);
		1887	{
		1888	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1889	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1890	if (addr == (void *)-1)
		1891	XSRETURN_NO;
		1892
		1893	sv_force_normal (scalar);
		1894
		1895	/* we store the length in mg_obj, as namlen is I32 :/ */
		1896	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1897	->mg_obj = (SV *)length;
		1898
		1899	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1900
		1901	if (!(prot & PROT_WRITE))
		1902	SvREADONLY_on (scalar);
		1903
		1904	if (SvLEN (scalar))
		1905	Safefree (SvPVX (scalar));
		1906
		1907	SvPVX (scalar) = (char *)addr;
		1908	SvCUR_set (scalar, length);
		1909	SvLEN_set (scalar, 0);
		1910	SvPOK_only (scalar);
		1911
		1912	XSRETURN_YES;
		1913	}
		1914
		1915	void
		1916	munmap (SV *scalar)
		1917	CODE:
		1918	sv_unmagic (scalar, MMAP_MAGIC);
		1919
		1920	int
		1921	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1922	ALIAS:
		1923	mprotect = 1
		1924	CODE:
		1925	{
		1926	STRLEN svlen;
		1927	void *addr = SvPVbyte (scalar, svlen);
		1928	STRLEN len = SvUV (length);
		1929
		1930	if (offset < 0)
		1931	offset += svlen;
		1932
		1933	if (offset < 0 || offset > svlen)
		1934	croak ("offset outside of scalar");
		1935
		1936	if (!SvOK (length) || len + offset > svlen)
		1937	len = svlen - offset;
		1938
		1939	addr = (void *)(((intptr_t)addr) + offset);
		1940	eio_page_align (&addr, &len);
		1941
		1942	switch (ix)
		1943	{
		1944	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1945	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1946	}
		1947	}
		1948	OUTPUT:
		1949	RETVAL
		1950
		1951	int
		1952	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1953	CODE:
		1954	{
		1955	STRLEN svlen;
		1956	void *addr = SvPVbyte (scalar, svlen);
		1957	size_t len = SvUV (length);
		1958
		1959	if (offset < 0)
		1960	offset += svlen;
		1961
		1962	if (offset < 0 || offset > svlen)
		1963	croak ("offset outside of scalar");
		1964
		1965	if (!SvOK (length) || len + offset > svlen)
		1966	len = svlen - offset;
		1967
		1968	addr = (void *)(((intptr_t)addr) + offset);
		1969	eio_page_align (&addr, &len);
		1970	#if _POSIX_MEMLOCK_RANGE
		1971	RETVAL = munlock (addr, len);
		1972	#else
		1973	RETVAL = EIO_ENOSYS ();
		1974	#endif
		1975	}
		1976	OUTPUT:
		1977	RETVAL
		1978
		1979	int
		1980	munlockall ()
		1981	CODE:
		1982	#if _POSIX_MEMLOCK
		1983	munlockall ();
		1984	#else
		1985	RETVAL = EIO_ENOSYS ();
		1986	#endif
		1987	OUTPUT:
		1988	RETVAL
		1989
		1990	int
		1991	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1992	CODE:
		1993	{
		1994	#if HAVE_LINUX_SPLICE
		1995	loff_t off_in_, off_out_;
		1996	RETVAL = splice (
		1997	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1998	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1999	length, flags
		2000	);
		2001	#else
		2002	RETVAL = EIO_ENOSYS ();
		2003	#endif
		2004	}
		2005	OUTPUT:
		2006	RETVAL
		2007
		2008	int
		2009	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2010	CODE:
		2011	#if HAVE_LINUX_SPLICE
		2012	RETVAL = tee (rfh, wfh, length, flags);
		2013	#else
		2014	RETVAL = EIO_ENOSYS ();
		2015	#endif
		2016	OUTPUT:
		2017	RETVAL
		2018
		2019	int
		2020	pipesize (aio_rfd rfh, int new_size = -1)
		2021	PROTOTYPE: $;$
		2022	CODE:
		2023	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2024	if (new_size >= 0)
		2025	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2026	else
		2027	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2028	#else
		2029	errno = ENOSYS;
		2030	RETVAL = -1;
		2031	#endif
		2032	OUTPUT:
		2033	RETVAL
		2034
		2035	void
		2036	pipe2 (int flags = 0)
		2037	PROTOTYPE: ;$
		2038	PPCODE:
		2039	{
		2040	int fd[2];
		2041	int res;
		2042
		2043	if (flags)
		2044	#if HAVE_PIPE2
		2045	res = pipe2 (fd, flags);
		2046	#else
		2047	res = (errno = ENOSYS, -1);
		2048	#endif
		2049	else
		2050	res = pipe (fd);
		2051
		2052	if (!res)
		2053	{
		2054	EXTEND (SP, 2);
		2055	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2056	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2057	}
		2058	}
		2059
		2060	UV
		2061	get_fdlimit ()
		2062	CODE:
		2063	#if HAVE_RLIMITS
		2064	struct rlimit rl;
		2065	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2066	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2067	#endif
		2068	XSRETURN_UNDEF;
		2069	OUTPUT:
		2070	RETVAL
		2071
		2072	void
		2073	min_fdlimit (UV limit = 0x7fffffffU)
		2074	CODE:
		2075	{
		2076	#if HAVE_RLIMITS
		2077	struct rlimit rl;
		2078	rlim_t orig_rlim_max;
		2079	UV bit;
		2080
		2081	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2082	goto fail;
		2083
		2084	if (rl.rlim_cur == RLIM_INFINITY)
		2085	XSRETURN_YES;
		2086
		2087	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2088
		2089	if (rl.rlim_cur < limit)
		2090	{
		2091	rl.rlim_cur = limit;
		2092
		2093	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2094	rl.rlim_max = rl.rlim_cur;
		2095	}
		2096
		2097	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2098	XSRETURN_YES;
		2099
		2100	if (errno == EPERM)
		2101	{
		2102	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2103	/* our limit overflows a system-wide limit */
		2104	/* try an adaptive algorithm, but do not lower the hardlimit */
		2105	rl.rlim_max = 0;
		2106	for (bit = 0x40000000U; bit; bit >>= 1)
		2107	{
		2108	rl.rlim_max |= bit;
		2109	rl.rlim_cur = rl.rlim_max;
		2110
		2111	/* nevr decrease the hard limit */
		2112	if (rl.rlim_max < orig_rlim_max)
		2113	break;
		2114
		2115	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2116	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2117	}
		2118
		2119	/* now, raise the soft limit to the max permitted */
		2120	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2121	{
		2122	rl.rlim_cur = rl.rlim_max;
		2123	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2124	errno = EPERM;
		2125	}
		2126	}
		2127	#endif
		2128	fail:
		2129	XSRETURN_UNDEF;
		2130	}
		2131
		2132	void _on_next_submit (SV *cb)
		2133	CODE:
		2134	SvREFCNT_dec (on_next_submit);
		2135	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2136
1449	PROTOTYPES: DISABLE	2137	PROTOTYPES: DISABLE
		2138
		2139	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2140
		2141	BOOT:
		2142	{
		2143	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2144	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2145	}
		2146
		2147	void
		2148	DESTROY (SV *self)
		2149	CODE:
		2150	{
		2151	aio_wd wd = SvAIO_WD (self);
		2152	#if HAVE_AT
		2153	{
		2154	SV *callback = &PL_sv_undef;
		2155	dREQ; /* clobbers next_pri :/ */
		2156	next_pri = req->pri; /* restore next_pri */
		2157	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2158	req->type = EIO_WD_CLOSE;
		2159	req->wd = wd;
		2160	REQ_SEND;
		2161	}
		2162	#else
		2163	eio_wd_close_sync (wd);
		2164	#endif
		2165	}
1450		2166
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2167	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		2168
1453	void	2169	void
1454	cancel (aio_req_ornot req)	2170	cancel (aio_req_ornot req)
1455	CODE:	2171	CODE:
1456	req_cancel (req);	2172	eio_cancel (req);
1457		2173
1458	void	2174	void
1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2175	cb (aio_req_ornot req, SV *callback = NO_INIT)
1460	CODE:	2176	PPCODE:
		2177	{
		2178	if (GIMME_V != G_VOID)
		2179	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2180
		2181	if (items > 1)
		2182	{
		2183	SV *cb_cv = get_cb (callback);
		2184
1461	SvREFCNT_dec (req->callback);	2185	SvREFCNT_dec (req->callback);
1462	req->callback = newSVsv (callback);	2186	req->callback = SvREFCNT_inc (cb_cv);
		2187	}
		2188	}
1463		2189
1464	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2190	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1465		2191
1466	void	2192	void
1467	add (aio_req grp, ...)	2193	add (aio_req grp, ...)
1468	PPCODE:	2194	PPCODE:
1469	{	2195	{
1470	int i;	2196	int i;
1471	aio_req req;
1472		2197
1473	if (grp->fd == 2)	2198	if (grp->int1 == 2)
1474	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2199	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1475		2200
1476	for (i = 1; i < items; ++i )	2201	for (i = 1; i < items; ++i )
1477	{	2202	{
		2203	aio_req req;
		2204
1478	if (GIMME_V != G_VOID)	2205	if (GIMME_V != G_VOID)
1479	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2206	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1480		2207
1481	req = SvAIO_REQ (ST (i));	2208	req = SvAIO_REQ (ST (i));
1482		2209
1483	if (req)	2210	if (req)
1484	{	2211	eio_grp_add (grp, req);
1485	++grp->length;
1486	req->grp = grp;
1487
1488	req->grp_prev = 0;
1489	req->grp_next = grp->grp_first;
1490
1491	if (grp->grp_first)
1492	grp->grp_first->grp_prev = req;
1493
1494	grp->grp_first = req;
1495	}
1496	}	2212	}
1497	}	2213	}
		2214
		2215	void
		2216	cancel_subs (aio_req_ornot req)
		2217	CODE:
		2218	req_cancel_subs (req);
1498		2219
1499	void	2220	void
1500	result (aio_req grp, ...)	2221	result (aio_req grp, ...)
1501	CODE:	2222	CODE:
1502	{	2223	{
1503	int i;	2224	int i;
		2225	AV *av;
		2226
		2227	grp->errorno = errno;
		2228
1504	AV *av = newAV ();	2229	av = newAV ();
		2230	av_extend (av, items - 1);
1505		2231
1506	for (i = 1; i < items; ++i )	2232	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	2233	av_push (av, newSVsv (ST (i)));
1508		2234
1509	SvREFCNT_dec (grp->data);	2235	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	2236	grp->sv1 = (SV *)av;
1511	}	2237	}
		2238
		2239	void
		2240	errno (aio_req grp, int errorno = errno)
		2241	CODE:
		2242	grp->errorno = errorno;
1512		2243
1513	void	2244	void
1514	limit (aio_req grp, int limit)	2245	limit (aio_req grp, int limit)
1515	CODE:	2246	CODE:
1516	grp->fd2 = limit;	2247	eio_grp_limit (grp, limit);
1517	aio_grp_feed (grp);
1518		2248
1519	void	2249	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	2250	feed (aio_req grp, SV *callback = &PL_sv_undef)
1521	CODE:	2251	CODE:
1522	{	2252	{
1523	SvREFCNT_dec (grp->fh2);	2253	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	2254	grp->sv2 = newSVsv (callback);
		2255	grp->feed = aio_grp_feed;
1525		2256
1526	if (grp->fd2 <= 0)	2257	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	2258	grp->int2 = 2;
1528		2259
1529	aio_grp_feed (grp);	2260	eio_grp_limit (grp, grp->int2);
1530	}	2261	}
1531		2262

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