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

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.80 by root, Fri Oct 27 19:17:23 2006 UTC vs.
Revision 1.229 by root, Fri Apr 11 05:19:40 2014 UTC

…		…
1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK \|\| _POSIX_MEMLOCK_RANGE \|\| _POSIX_MAPPED_FILES
34	# if __linux
35	# include <sys/sendfile.h>
36	# elif __freebsd
37	# include <sys/socket.h>
38	# include <sys/uio.h>	21	# include <sys/mman.h>
39	# 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. on't complain if this fails for you.
		27	*/
		28	#if __linux__ && (defined __GLIBC__ \|\| defined __UCLIBC__)
		29	# include <linux/fs.h>
		30	# ifdef FS_IOC_FIEMAP
		31	# include <linux/types.h>
		32	# include <linux/fiemap.h>
		33	# define HAVE_FIEMAP 1
		34	# endif
		35	#endif
		36
		37	/* perl namespace pollution */
		38	#undef VERSION
		39
		40	/* perl stupidly overrides readdir and maybe others */
		41	/* with thread-unsafe versions, imagine that :( */
		42	#undef readdir
		43	#undef opendir
		44	#undef closedir
		45
		46	#ifdef _WIN32
		47
		48	// perl overrides all those nice libc functions
		49
		50	#undef malloc
		51	#undef free
		52	#undef open
		53	#undef read
		54	#undef write
		55	#undef send
		56	#undef recv
		57	#undef stat
		58	#undef lstat
		59	#undef fstat
		60	#undef truncate
		61	#undef ftruncate
		62	#undef open
		63	#undef link
		64	#undef close
		65	#undef unlink
		66	#undef mkdir
		67	#undef rmdir
		68	#undef rename
		69	#undef lseek
		70	#undef opendir
		71	#undef readdir
		72	#undef closedir
		73	#undef chmod
		74	#undef fchmod
		75	#undef dup
		76	#undef dup2
		77	#undef abort
		78	#undef pipe
		79
		80	#define EIO_STRUCT_STAT struct _stati64
		81	#define EIO_STRUCT_STATI64
		82
		83	#else
		84
40	# include <sys/socket.h>	85	#include <sys/time.h>
41	# elif __solaris /* not yet */
42	# include <sys/sendfile.h>	86	#include <sys/select.h>
		87	#include <unistd.h>
		88	#include <utime.h>
		89	#include <signal.h>
		90
		91	#define EIO_STRUCT_STAT Stat_t
		92
		93	#endif
		94
		95	/*****************************************************************************/
		96
		97	#if __GNUC__ >= 3
		98	# define expect(expr,value) __builtin_expect ((expr),(value))
		99	#else
		100	# define expect(expr,value) (expr)
		101	#endif
		102
		103	#define expect_false(expr) expect ((expr) != 0, 0)
		104	#define expect_true(expr) expect ((expr) != 0, 1)
		105
		106	/*****************************************************************************/
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
		109	typedef int aio_rfd; /* read file desriptor */
		110	typedef int aio_wfd; /* write file descriptor */
		111
		112	static HV aio_stash, aio_req_stash, aio_grp_stash, aio_wd_stash;
		113
		114	#define EIO_REQ_MEMBERS \
		115	SV *callback; \
		116	SV sv1, sv2; \
		117	SV sv3, sv4; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	static int req_invoke (eio_req *req);
		127	#define EIO_FINISH(req) req_invoke (req)
		128	static void req_destroy (eio_req *grp);
		129	#define EIO_DESTROY(req) req_destroy (req)
		130
		131	#include "libeio/eio.c"
		132
		133	#if !HAVE_POSIX_FADVISE
		134	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#if !HAVE_POSIX_MADVISE
		138	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		139	#endif
		140
		141	#ifndef MAP_ANONYMOUS
		142	# ifdef MAP_ANON
		143	# define MAP_ANONYMOUS MAP_ANON
43	# else	144	# else
44	# error sendfile support requested but not available	145	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	146	# endif
46	#endif	147	#endif
47		148
48	/* used for struct dirent, AIX doesn't provide it */	149	/* defines all sorts of constants to 0 unless they are already defined */
49	#ifndef NAME_MAX	150	#include "def0.h"
50	# define NAME_MAX 4096
51	#endif
52		151
53	#ifndef PTHREAD_STACK_MIN	152	#ifndef makedev
54	/* care for broken platforms, e.g. windows */	153	# define makedev(maj,min) (((maj) << 8) \| (min))
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 \|\| __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 \|\| __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif	154	#endif
		155	#ifndef major
		156	# define major(dev) ((dev) >> 8)
76	#endif	157	#endif
		158	#ifndef minor
		159	# define minor(dev) ((dev) & 0xff)
		160	#endif
77		161
78	/* buffer size for various temporary buffers */	162	#if PAGESIZE <= 0
79	#define AIO_BUFSIZE 65536	163	# define PAGESIZE sysconf (_SC_PAGESIZE)
		164	#endif
80		165
81	#define dBUF \	166	/*****************************************************************************/
82	char *aio_buf; \	167
83	LOCK (wrklock); \	168	static void
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	169	fiemap (eio_req *req)
85	UNLOCK (wrklock); \	170	{
86	if (!aio_buf) \	171	req->result = -1;
		172
		173	#if HAVE_FIEMAP
		174	/* assume some c99 */
		175	struct fiemap *fiemap = 0;
		176	size_t end_offset;
		177	int count = req->int3;
		178
		179	req->flags \|= EIO_FLAG_PTR1_FREE;
		180
		181	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		182	/* increase in 3.5kb steps */
		183	if (count < 0)
		184	count = 8;
		185
		186	fiemap = malloc (sizeof (fiemap) + sizeof (struct fiemap_extent) count);
		187	errno = ENOMEM;
		188	if (!fiemap)
87	return -1;	189	return;
88		190
89	enum {	191	req->ptr1 = fiemap;
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		192
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	193	fiemap->fm_start = req->offs;
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	194	fiemap->fm_length = req->size;
		195	fiemap->fm_flags = req->int2;
		196	fiemap->fm_extent_count = count;
105		197
106	typedef struct aio_cb	198	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
107	{	199	return;
108	struct aio_cb *volatile next;
109		200
110	SV data, callback;	201	if (req->int3 >= 0 /* not autosizing */
111	SV fh, fh2;	202	\|\| !fiemap->fm_mapped_extents /* no more extents */
112	void dataptr, data2ptr;	203	\|\| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
113	Stat_t *statdata;	204	goto done;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117		205
118	STRLEN dataoffset;	206	/* else we have to loop -
119	int type;	207	* it would be tempting (actually I tried that first) to just query the
120	int fd, fd2;	208	* number of extents needed, but linux often feels like not returning all
121	int errorno;	209	* extents, without telling us it left any out. this complicates
122	mode_t mode; /* open */	210	* this quite a bit.
		211	*/
123		212
124	unsigned char flags;	213	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
125	unsigned char pri;
126		214
127	SV self; / the perl counterpart of this request, if any */	215	for (;;)
128	struct aio_cb grp, grp_prev, grp_next, grp_first;
129	} aio_cb;
130
131	enum {
132	FLAG_CANCELLED = 0x01,
133	};
134
135	typedef aio_cb *aio_req;
136	typedef aio_cb *aio_req_ornot;
137
138	enum {
139	PRI_MIN = -4,
140	PRI_MAX = 4,
141
142	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker prev, next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{	216	{
181	closedir (wrk->dirp);	217	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
182	wrk->dirp = 0;	218	char scratch[3072];
183	}	219	struct fiemap incmap = (struct fiemap )scratch;
184		220
185	if (wrk->dbuf)	221	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
186	{	222	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
187	free (wrk->dbuf);	223	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
188	wrk->dbuf = 0;	224	incmap->fm_flags = fiemap->fm_flags;
189	}	225	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
190	}
191		226
192	static void worker_free (worker *wrk)	227	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;	228	return;
274		229
275	--q->size;	230	if (!incmap->fm_mapped_extents)
		231	goto done;
276		232
277	for (pri = NUM_PRI; pri--; )	233	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
278	{	234	fiemap = realloc (fiemap, sizeof (fiemap) + sizeof (struct fiemap_extent) count);
279	aio_req req = q->qs[pri];	235	errno = ENOMEM;
280
281	if (req)	236	if (!fiemap)
		237	return;
		238
		239	req->ptr1 = fiemap;
		240
		241	for (count = 0; count < incmap->fm_mapped_extents; ++count)
282	{	242	{
283	if (!(q->qs[pri] = req->next))	243	struct fiemap_extent *e = incmap->fm_extents + count;
284	q->qe[pri] = 0;
285		244
286	return req;	245	if (e->fe_logical + e->fe_length >= end_offset)
		246	goto done;
		247
		248	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		249
		250	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		251	goto done;
		252
287	}	253	}
288	}	254	}
289		255
290	abort ();	256	done:
291	}	257	req->result = 0;
292		258
293	static int poll_cb (int max);	259	#else
294	static void req_invoke (aio_req req);	260	errno = ENOSYS;
		261	#endif
		262	}
		263
		264	/*****************************************************************************/
		265
		266	enum {
		267	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		268	};
		269
		270	typedef eio_req *aio_req;
		271	typedef eio_req *aio_req_ornot;
		272	typedef eio_wd aio_wd;
		273
		274	static SV *on_next_submit;
		275	static int next_pri = EIO_PRI_DEFAULT;
		276	static int max_outstanding;
		277
		278	static s_epipe respipe;
		279
295	static void req_free (aio_req req);	280	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	281	static void req_cancel (aio_req req);
297		282
		283	static void
		284	want_poll (void)
		285	{
		286	/* write a dummy byte to the pipe so fh becomes ready */
		287	s_epipe_signal (&respipe);
		288	}
		289
		290	static void
		291	done_poll (void)
		292	{
		293	/* read any signals sent by the worker threads */
		294	s_epipe_drain (&respipe);
		295	}
		296
298	/* must be called at most once */	297	/* must be called at most once */
299	static SV req_sv (aio_req req, const char klass)	298	static SV *
		299	req_sv (aio_req req, HV *stash)
300	{	300	{
301	if (!req->self)	301	if (!req->self)
302	{	302	{
303	req->self = (SV *)newHV ();	303	req->self = (SV *)newHV ();
304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	304	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
305	}	305	}
306		306
307	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	307	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
308	}	308	}
309		309
310	static aio_req SvAIO_REQ (SV *sv)	310	static SV *
		311	newSVaio_wd (aio_wd wd)
		312	{
		313	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		314	}
		315
		316	static aio_req
		317	SvAIO_REQ (SV *sv)
311	{	318	{
312	MAGIC *mg;	319	MAGIC *mg;
313		320
314	if (!sv_derived_from (sv, AIO_REQ_KLASS) \|\| !SvROK (sv))	321	if (!SvROK (sv)
		322	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		323	\|\| (SvSTASH (SvRV (sv)) != aio_grp_stash
		324	&& SvSTASH (SvRV (sv)) != aio_req_stash
		325	&& !sv_derived_from (sv, "IO::AIO::REQ")))
315	croak ("object of class " AIO_REQ_KLASS " expected");	326	croak ("object of class IO::AIO::REQ expected");
316		327
317	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	328	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
318		329
319	return mg ? (aio_req)mg->mg_ptr : 0;	330	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	331	}
321		332
		333	static aio_wd
		334	SvAIO_WD (SV *sv)
		335	{
		336	if (!SvROK (sv)
		337	\|\| SvTYPE (SvRV (sv)) != SVt_PVMG
		338	\|\| SvSTASH (SvRV (sv)) != aio_wd_stash)
		339	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		340
		341	return (aio_wd)(long)SvIVX (SvRV (sv));
		342	}
		343
		344	static void
322	static void aio_grp_feed (aio_req grp)	345	aio_grp_feed (aio_req grp)
323	{	346	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	347	if (grp->sv2 && SvOK (grp->sv2))
325	{	348	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	349	dSP;
331		350
332	ENTER;	351	ENTER;
333	SAVETMPS;	352	SAVETMPS;
334	PUSHMARK (SP);	353	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	354	XPUSHs (req_sv (grp, aio_grp_stash));
336	PUTBACK;	355	PUTBACK;
337	call_sv (grp->fh2, G_VOID \| G_EVAL \| G_KEEPERR);	356	call_sv (grp->sv2, G_VOID \| G_EVAL \| G_KEEPERR);
338	SPAGAIN;	357	SPAGAIN;
339	FREETMPS;	358	FREETMPS;
340	LEAVE;	359	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	360	}
351	}	361	}
352		362
353	static void aio_grp_dec (aio_req grp)	363	static void
		364	req_submit (eio_req *req)
354	{	365	{
355	--grp->length;	366	eio_submit (req);
356		367
357	/* call feeder, if applicable */	368	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	369	{
363	req_invoke (grp);	370	dSP;
364	req_free (grp);	371	SV *cb = sv_2mortal (on_next_submit);
		372
		373	on_next_submit = 0;
		374
		375	PUSHMARK (SP);
		376	PUTBACK;
		377	call_sv (cb, G_DISCARD \| G_EVAL);
365	}	378	}
366	}	379	}
367		380
		381	static int
368	static void req_invoke (aio_req req)	382	req_invoke (eio_req *req)
369	{	383	{
370	dSP;	384	if (req->flags & FLAG_SV2_RO_OFF)
		385	SvREADONLY_off (req->sv2);
371		386
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	387	if (!EIO_CANCELLED (req) && req->callback)
373	{	388	{
		389	dSP;
		390	static SV sv_result_cache; / caches the result integer SV */
		391	SV *sv_result;
		392
374	ENTER;	393	ENTER;
375	SAVETMPS;	394	SAVETMPS;
376	PUSHMARK (SP);	395	PUSHMARK (SP);
377	EXTEND (SP, 1);	396	EXTEND (SP, 1);
378		397
		398	/* do not recreate the result IV from scratch each time */
		399	if (expect_true (sv_result_cache))
		400	{
		401	sv_result = sv_result_cache; sv_result_cache = 0;
		402	SvIV_set (sv_result, req->result);
		403	SvIOK_only (sv_result);
		404	}
		405	else
		406	{
		407	sv_result = newSViv (req->result);
		408	SvREADONLY_on (sv_result);
		409	}
		410
379	switch (req->type)	411	switch (req->type)
380	{	412	{
		413	case EIO_WD_OPEN:
		414	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		415	break;
		416
381	case REQ_READDIR:	417	case EIO_READDIR:
382	{	418	{
383	SV *rv = &PL_sv_undef;	419	SV *rv = &PL_sv_undef;
384		420
385	if (req->result >= 0)	421	if (req->result >= 0)
386	{	422	{
387	int i;	423	int i;
388	char *buf = req->data2ptr;	424	char names = (char )req->ptr2;
		425	eio_dirent ent = (eio_dirent )req->ptr1; /* might be 0 */
389	AV *av = newAV ();	426	AV *av = newAV ();
390		427
391	av_extend (av, req->result - 1);	428	av_extend (av, req->result - 1);
392		429
393	for (i = 0; i < req->result; ++i)	430	for (i = 0; i < req->result; ++i)
394	{	431	{
395	SV *sv = newSVpv (buf, 0);	432	if (req->int1 & EIO_READDIR_DENTS)
		433	{
		434	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
396		435
		436	if (req->int1 & EIO_READDIR_CUSTOM2)
		437	{
		438	static SV sv_type [EIO_DT_MAX + 1]; / type sv cache */
		439	AV *avent = newAV ();
		440
		441	av_extend (avent, 2);
		442
		443	if (!sv_type [ent->type])
		444	{
		445	sv_type [ent->type] = newSViv (ent->type);
		446	SvREADONLY_on (sv_type [ent->type]);
		447	}
		448
		449	av_store (avent, 0, namesv);
		450	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		451	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		452
		453	av_store (av, i, newRV_noinc ((SV *)avent));
		454	}
		455	else
397	av_store (av, i, sv);	456	av_store (av, i, namesv);
		457
		458	++ent;
		459	}
		460	else
		461	{
		462	SV *name = newSVpv (names, 0);
		463	av_store (av, i, name);
398	buf += SvCUR (sv) + 1;	464	names += SvCUR (name) + 1;
		465	}
399	}	466	}
400		467
401	rv = sv_2mortal (newRV_noinc ((SV *)av));	468	rv = sv_2mortal (newRV_noinc ((SV *)av));
402	}	469	}
403		470
404	PUSHs (rv);	471	PUSHs (rv);
		472
		473	if (req->int1 & EIO_READDIR_CUSTOM1)
		474	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 \| EIO_READDIR_CUSTOM2))));
405	}	475	}
406	break;	476	break;
407		477
408	case REQ_OPEN:	478	case EIO_OPEN:
409	{	479	{
410	/* convert fd to fh */	480	/* convert fd to fh */
411	SV *fh;	481	SV *fh = &PL_sv_undef;
412		482
413	PUSHs (sv_2mortal (newSViv (req->result)));	483	if (req->result >= 0)
414	PUTBACK;	484	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR \| G_EVAL);	485	GV gv = (GV )sv_newmortal ();
416	SPAGAIN;	486	int flags = req->int1 & (O_RDONLY \| O_WRONLY \| O_RDWR);
		487	char sym [64];
		488	int symlen;
		489
		490	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		491	gv_init (gv, aio_stash, sym, symlen, 0);
417		492
418	fh = SvREFCNT_inc (POPs);	493	symlen = snprintf (
		494	sym,
		495	sizeof (sym),
		496	"%s&=%d",
		497	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		498	(int)req->result
		499	);
419		500
		501	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		502	fh = (SV *)gv;
		503	}
		504
420	PUSHMARK (SP);	505	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	506	}
423	break;	507	break;
424		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
		511	{
		512	SV *rv = &PL_sv_undef;
		513
		514	#ifndef _WIN32
		515	if (req->result >= 0)
		516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		518	HV *hv = newHV ();
		519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		520	* chooses to make it a struct.
		521	*/
		522	unsigned long fsid = 0;
		523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		524
		525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		526
		527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		528	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		529	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		530	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		531	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		532	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		533	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		534	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		535	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		536	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		537	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		538	}
		539	#endif
		540
		541	PUSHs (rv);
		542	}
		543
		544	break;
		545
425	case REQ_GROUP:	546	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	547	req->int1 = 2; /* mark group as finished */
427		548
428	if (req->data)	549	if (req->sv1)
429	{	550	{
430	int i;	551	int i;
431	AV av = (AV )req->data;	552	AV av = (AV )req->sv1;
432		553
433	EXTEND (SP, AvFILL (av) + 1);	554	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	555	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	556	PUSHs (*av_fetch (av, i, 0));
436	}	557	}
437	break;	558	break;
438		559
439	case REQ_NOP:	560	case EIO_NOP:
440	case REQ_BUSY:	561	case EIO_BUSY:
441	break;	562	break;
442		563
		564	case EIO_READLINK:
		565	case EIO_REALPATH:
		566	if (req->result > 0)
		567	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		568	break;
		569
		570	case EIO_STAT:
		571	case EIO_LSTAT:
		572	case EIO_FSTAT:
		573	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		574
		575	if (!(PL_laststatval = req->result))
		576	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		577	PL_statcache = (EIO_STRUCT_STAT )(req->ptr2);
		578
		579	PUSHs (sv_result);
		580	break;
		581
		582	case EIO_SEEK:
		583	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		584	break;
		585
		586	case EIO_READ:
		587	{
		588	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		589	*SvEND (req->sv2) = 0;
		590	SvPOK_only (req->sv2);
		591	SvSETMAGIC (req->sv2);
		592	PUSHs (sv_result);
		593	}
		594	break;
		595
		596	case EIO_CUSTOM:
		597	if (req->feed == fiemap)
		598	{
		599	#if HAVE_FIEMAP
		600	if (!req->result)
		601	{
		602	struct fiemap fiemap = (struct fiemap )req->ptr1;
		603
		604	if (fiemap->fm_extent_count)
		605	{
		606	AV *av = newAV ();
		607	int i;
		608
		609	while (fiemap->fm_mapped_extents)
		610	{
		611	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		612	AV *ext_av = newAV ();
		613
		614	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		615	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		616	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		617	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		618
		619	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		620	}
		621
		622	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		623	}
		624	else
		625	{
		626	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		627	PUSHs (sv_result);
		628	}
		629	}
		630	#endif
		631	}
		632	else
		633	PUSHs (sv_result);
		634	break;
		635
		636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		637	if (req->result > 0)
		638	SvIV_set (sv_result, 0);
		639	/* FALLTHROUGH */
		640
443	default:	641	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	642	PUSHs (sv_result);
445	break;	643	break;
446	}	644	}
447		645
448	errno = req->errorno;	646	errno = req->errorno;
449		647
450	PUTBACK;	648	PUTBACK;
451	call_sv (req->callback, G_VOID \| G_EVAL);	649	call_sv (req->callback, G_VOID \| G_EVAL \| G_DISCARD);
452	SPAGAIN;	650	SPAGAIN;
		651
		652	if (expect_false (SvREFCNT (sv_result) != 1 \|\| sv_result_cache))
		653	SvREFCNT_dec (sv_result);
		654	else
		655	sv_result_cache = sv_result;
453		656
454	FREETMPS;	657	FREETMPS;
455	LEAVE;	658	LEAVE;
		659
		660	PUTBACK;
456	}	661	}
457		662
458	if (req->grp)	663	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	664	}
478		665
479	static void req_free (aio_req req)	666	static void
		667	req_destroy (aio_req req)
480	{	668	{
481	if (req->self)	669	if (req->self)
482	{	670	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	671	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	672	SvREFCNT_dec (req->self);
485	}	673	}
486		674
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	675	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
490	SvREFCNT_dec (req->callback);	679	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492		680
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495
496	Safefree (req);	681	free (req);
497	}	682	}
498		683
		684	static void
499	static void req_cancel_subs (aio_req grp)	685	req_cancel_subs (aio_req grp)
500	{	686	{
501	aio_req sub;
502
503	if (grp->type != REQ_GROUP)	687	if (grp->type != EIO_GROUP)
504	return;	688	return;
505		689
506	SvREFCNT_dec (grp->fh2);	690	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	691	grp->sv2 = 0;
508		692
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	693	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	694	}
512		695
513	static void req_cancel (aio_req req)	696	static void ecb_cold
		697	create_respipe (void)
514	{	698	{
515	req->flags \|= FLAG_CANCELLED;	699	if (s_epipe_renew (&respipe))
516		700	croak ("IO::AIO: unable to initialize result pipe");
517	req_cancel_subs (req);
518	}	701	}
519		702
520	static void aio_proc(void arg);	703	static void
521		704	poll_wait (void)
522	static void start_thread (void)
523	{	705	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif
538
539	sigfillset (&fullsigset);
540
541	LOCK (wrklock);
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
543
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
545	{
546	wrk->prev = &wrk_first;
547	wrk->next = wrk_first.next;
548	wrk_first.next->prev = wrk;
549	wrk_first.next = wrk;
550	++started;
551	}
552	else
553	free (wrk);
554
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
556	UNLOCK (wrklock);
557	}
558
559	static void maybe_start_thread ()
560	{
561	#if 0
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif
565
566	if (started >= wanted)
567	return;
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}
592
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()
638	{
639	fd_set rfd;
640
641	while (nreqs)	706	while (eio_nreqs ())
642	{	707	{
643	int size;	708	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	709
		710	X_LOCK (reslock);
645	size = res_queue.size;	711	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	712	X_UNLOCK (reslock);
647		713
648	if (size)	714	if (size)
649	return;	715	return;
650		716
651	maybe_start_thread ();	717	etp_maybe_start_thread ();
652		718
653	FD_ZERO(&rfd);	719	s_epipe_wait (&respipe);
654	FD_SET(respipe [0], &rfd);
655
656	select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	720	}
658	}	721	}
659		722
660	static int poll_cb (int max)	723	static int
		724	poll_cb (void)
661	{	725	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	726	for (;;)
668	{	727	{
669	while (max <= 0 \|\| count < max)	728	int res = eio_poll ();
		729
		730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding \|\| max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		753	# define munmap(addr,length) EIO_ENOSYS ()
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		758	# define PROT_NONE 0
		759	# define PROT_WRITE 0
		760	# define MAP_PRIVATE 0
		761	# define MAP_SHARED 0
		762	# define MAP_FIXED 0
		763	#endif
		764
		765	#define MMAP_MAGIC PERL_MAGIC_ext
		766
		767	static int ecb_cold
		768	mmap_free (pTHX_ SV sv, MAGIC mg)
		769	{
		770	int old_errno = errno;
		771	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		772	errno = old_errno;
		773
		774	mg->mg_obj = 0; /* just in case */
		775
		776	SvREADONLY_off (sv);
		777
		778	if (SvPVX (sv) != mg->mg_ptr)
		779	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		780
		781	SvCUR_set (sv, 0);
		782	SvPVX (sv) = 0;
		783	SvOK_off (sv);
		784
		785	return 0;
		786	}
		787
		788	static MGVTBL mmap_vtbl = {
		789	0, 0, 0, 0, mmap_free
		790	};
		791
		792	/*****************************************************************************/
		793
		794	static SV *
		795	get_cb (SV *cb_sv)
		796	{
		797	SvGETMAGIC (cb_sv);
		798	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		799	}
		800
		801	static aio_req ecb_noinline
		802	dreq (SV *callback)
		803	{
		804	SV *cb_cv;
		805	aio_req req;
		806	int req_pri = next_pri;
		807	next_pri = EIO_PRI_DEFAULT;
		808
		809	cb_cv = get_cb (callback);
		810
		811	req = calloc (sizeof (*req), 1);
		812	if (!req)
		813	croak ("out of memory during eio_req allocation");
		814
		815	req->callback = SvREFCNT_inc (cb_cv);
		816	req->pri = req_pri;
		817
		818	return req;
		819	}
		820
		821	#define dREQ \
		822	aio_req req = dreq (callback); \
		823
		824	#define REQ_SEND \
		825	PUTBACK; \
		826	req_submit (req); \
		827	SPAGAIN; \
		828	\
		829	if (GIMME_V != G_VOID) \
		830	XPUSHs (req_sv (req, aio_req_stash));
		831
		832	ecb_inline void
		833	req_set_path (aio_req req, SV path, SV wdsv, SV pathsv, eio_wd wd, void **ptr)
		834	{
		835	if (expect_false (SvROK (path)))
		836	{
		837	SV *rv = SvRV (path);
		838	SV *wdob;
		839
		840	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
670	{	841	{
671	maybe_start_thread ();	842	path = AvARRAY (rv)[1];
		843	wdob = AvARRAY (rv)[0];
672		844
673	LOCK (reslock);	845	if (SvOK (wdob))
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{	846	{
678	--npending;	847	*wd = SvAIO_WD (wdob);
679		848	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}	849	}
701	else	850	else
702	{	851	*wd = EIO_INVALID_WD;
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ \|\| req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}	852	}
		853	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		854	{
		855	*wd = (aio_wd)(long)SvIVX (rv);
		856	*wdsv = SvREFCNT_inc_NN (rv);
		857	*ptr = ".";
		858	return; /* path set to "." */
		859	}
		860	else
		861	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		862	}
723		863
724	if (nreqs <= max_outstanding)	864	*pathsv = newSVsv (path);
		865	ptr = SvPVbyte_nolen (pathsv);
		866	}
		867
		868	static void ecb_noinline
		869	req_set_path1 (aio_req req, SV *path)
		870	{
		871	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		872	}
		873
		874	static void ecb_noinline
		875	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		876	{
		877	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		878
		879	switch (SvTYPE (rv))
		880	{
		881	case SVt_PVIO:
		882	case SVt_PVLV:
		883	case SVt_PVGV:
		884	req->type = type_fh;
		885	req->sv1 = newSVsv (fh_or_path);
		886	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
725	break;	887	break;
726		888
727	poll_wait ();	889	default:
728		890	req->type = type_path;
729	max = 0;	891	req_set_path1 (req, fh_or_path);
		892	break;
730	}	893	}
731
732	return count;
733	}	894	}
734		895
735	static void create_pipe ()	896	XS(boot_IO__AIO) ecb_cold;
736	{
737	if (pipe (respipe))
738	croak ("unable to initialize result pipe");
739		897
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}
746
747	/*****************************************************************************/
748	/* work around various missing functions */
749
750	#if !HAVE_PREADWRITE
751	# define pread aio_pread
752	# define pwrite aio_pwrite
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR dirp, struct dirent ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;
854
855	#if HAVE_SENDFILE
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858
859	# elif __freebsd
860	/*
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868	if (res < 0 && sbytes)
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897
898	if (res < 0
899	&& (errno == ENOSYS \|\| errno == EINVAL \|\| errno == ENOTSOCK
900	#if __solaris
901	\|\| errno == EAFNOSUPPORT \|\| errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908
909	res = 0;
910
911	while (count)
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917	if (cnt <= 0)
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922
923	cnt = write (ofd, aio_buf, cnt);
924
925	if (cnt <= 0)
926	{
927	if (cnt && !res) res = -1;
928	break;
929	}
930
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;
938	}
939
940	/* read a full directory */
941	static void scandir_ (aio_req req, worker *self)
942	{
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char name, names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' \|\| (name [1] && (name [1] != '.' \|\| name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000
1001	/*****************************************************************************/
1002
1003	static void aio_proc (void thr_arg)
1004	{
1005	aio_req req;
1006	worker self = (worker )thr_arg;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048
1049	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1050	case REQ_FSYNC: req->result = fsync (req->fd); break;
1051	case REQ_READDIR: scandir_ (req, self); break;
1052
1053	case REQ_BUSY:
1054	{
1055	struct timeval tv;
1056
1057	tv.tv_sec = req->fd;
1058	tv.tv_usec = req->fd2;
1059
1060	req->result = select (0, 0, 0, 0, &tv);
1061	}
1062
1063	case REQ_GROUP:
1064	case REQ_NOP:
1065	break;
1066
1067	case REQ_QUIT:
1068	LOCK (wrklock);
1069	worker_free (self);
1070	--started;
1071	UNLOCK (wrklock);
1072	return 0;
1073
1074	default:
1075	req->result = ENOSYS;
1076	break;
1077	}
1078
1079	req->errorno = errno;
1080
1081	LOCK (reslock);
1082
1083	++npending;
1084
1085	if (!reqq_push (&res_queue, req))
1086	/* write a dummy byte to the pipe so fh becomes ready */
1087	write (respipe [1], &respipe, 1);
1088
1089	self->req = 0;
1090	worker_clear (self);
1091
1092	UNLOCK (reslock);
1093	}
1094	}
1095
1096	/*****************************************************************************/
1097
1098	static void atfork_prepare (void)
1099	{
1100	LOCK (wrklock);
1101	LOCK (reqlock);
1102	LOCK (reslock);
1103	#if !HAVE_PREADWRITE
1104	LOCK (preadwritelock);
1105	#endif
1106	#if !HAVE_READDIR_R
1107	LOCK (readdirlock);
1108	#endif
1109	}
1110
1111	static void atfork_parent (void)
1112	{
1113	#if !HAVE_READDIR_R
1114	UNLOCK (readdirlock);
1115	#endif
1116	#if !HAVE_PREADWRITE
1117	UNLOCK (preadwritelock);
1118	#endif
1119	UNLOCK (reslock);
1120	UNLOCK (reqlock);
1121	UNLOCK (wrklock);
1122	}
1123
1124	static void atfork_child (void)
1125	{
1126	aio_req prv;
1127
1128	while (prv = reqq_shift (&req_queue))
1129	req_free (prv);
1130
1131	while (prv = reqq_shift (&res_queue))
1132	req_free (prv);
1133
1134	while (wrk_first.next != &wrk_first)
1135	{
1136	worker *wrk = wrk_first.next;
1137
1138	if (wrk->req)
1139	req_free (wrk->req);
1140
1141	worker_clear (wrk);
1142	worker_free (wrk);
1143	}
1144
1145	started = 0;
1146	nreqs = 0;
1147
1148	close (respipe [0]);
1149	close (respipe [1]);
1150	create_pipe ();
1151
1152	atfork_parent ();
1153	}
1154
1155	#define dREQ \
1156	aio_req req; \
1157	int req_pri = next_pri; \
1158	next_pri = DEFAULT_PRI + PRI_BIAS; \
1159	\
1160	if (SvOK (callback) && !SvROK (callback)) \
1161	croak ("callback must be undef or of reference type"); \
1162	\
1163	Newz (0, req, 1, aio_cb); \
1164	if (!req) \
1165	croak ("out of memory during aio_req allocation"); \
1166	\
1167	req->callback = newSVsv (callback); \
1168	req->pri = req_pri
1169
1170	#define REQ_SEND \
1171	req_send (req); \
1172	\
1173	if (GIMME_V != G_VOID) \
1174	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1175
1176	MODULE = IO::AIO PACKAGE = IO::AIO	898	MODULE = IO::AIO PACKAGE = IO::AIO
1177		899
1178	PROTOTYPES: ENABLE	900	PROTOTYPES: ENABLE
1179		901
1180	BOOT:	902	BOOT:
1181	{	903	{
		904	static const struct {
		905	const char *name;
		906	IV iv;
		907	} *civ, const_iv[] = {
		908	# define const_niv(name, value) { # name, (IV) value },
		909	# define const_iv(name) { # name, (IV) name },
		910	# define const_eio(name) { # name, (IV) EIO_ ## name },
		911
		912	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		913
		914	const_iv (ENOSYS)
		915	const_iv (EXDEV)
		916	const_iv (EBADR)
		917
		918	const_iv (O_RDONLY)
		919	const_iv (O_WRONLY)
		920	const_iv (O_RDWR)
		921	const_iv (O_CREAT)
		922	const_iv (O_TRUNC)
		923	const_iv (O_EXCL)
		924	const_iv (O_APPEND)
		925
		926	const_iv (O_ASYNC)
		927	const_iv (O_DIRECT)
		928	const_iv (O_NOATIME)
		929
		930	const_iv (O_CLOEXEC)
		931	const_iv (O_NOCTTY)
		932	const_iv (O_NOFOLLOW)
		933	const_iv (O_NONBLOCK)
		934	const_iv (O_EXEC)
		935	const_iv (O_SEARCH)
		936	const_iv (O_DIRECTORY)
		937	const_iv (O_DSYNC)
		938	const_iv (O_RSYNC)
		939	const_iv (O_SYNC)
		940	const_iv (O_TTY_INIT)
		941
		942	const_iv (S_IFIFO)
		943	const_iv (S_IFCHR)
		944	const_iv (S_IFBLK)
		945	const_iv (S_IFLNK)
		946	const_iv (S_IFREG)
		947	const_iv (S_IFDIR)
		948	const_iv (S_IFWHT)
		949	const_iv (S_IFSOCK)
		950	const_iv (S_IFMT)
		951
		952	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		953	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		954	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		955	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		956	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		957	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		958
		959	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		960	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		961	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		962	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		963	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		964
		965	const_iv (ST_RDONLY)
		966	const_iv (ST_NOSUID)
		967	const_iv (ST_NODEV)
		968	const_iv (ST_NOEXEC)
		969	const_iv (ST_SYNCHRONOUS)
		970	const_iv (ST_MANDLOCK)
		971	const_iv (ST_WRITE)
		972	const_iv (ST_APPEND)
		973	const_iv (ST_IMMUTABLE)
		974	const_iv (ST_NOATIME)
		975	const_iv (ST_NODIRATIME)
		976	const_iv (ST_RELATIME)
		977
		978	const_iv (PROT_NONE)
		979	const_iv (PROT_EXEC)
		980	const_iv (PROT_READ)
		981	const_iv (PROT_WRITE)
		982
		983	/const_iv (MAP_FIXED)/
		984	const_iv (MAP_PRIVATE)
		985	const_iv (MAP_SHARED)
		986	const_iv (MAP_ANONYMOUS)
		987
		988	/* linuxish */
		989	const_iv (MAP_HUGETLB)
		990	const_iv (MAP_LOCKED)
		991	const_iv (MAP_NORESERVE)
		992	const_iv (MAP_POPULATE)
		993	const_iv (MAP_NONBLOCK)
		994
		995	const_iv (FIEMAP_FLAG_SYNC)
		996	const_iv (FIEMAP_FLAG_XATTR)
		997	const_iv (FIEMAP_FLAGS_COMPAT)
		998	const_iv (FIEMAP_EXTENT_LAST)
		999	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1000	const_iv (FIEMAP_EXTENT_DELALLOC)
		1001	const_iv (FIEMAP_EXTENT_ENCODED)
		1002	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1003	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1004	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1005	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1006	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1007	const_iv (FIEMAP_EXTENT_MERGED)
		1008	const_iv (FIEMAP_EXTENT_SHARED)
		1009
		1010	const_iv (SPLICE_F_MOVE)
		1011	const_iv (SPLICE_F_NONBLOCK)
		1012	const_iv (SPLICE_F_MORE)
		1013	const_iv (SPLICE_F_GIFT)
		1014
		1015	const_iv (SEEK_DATA)
		1016	const_iv (SEEK_HOLE)
		1017
		1018	/* libeio constants */
		1019	const_eio (SEEK_SET)
		1020	const_eio (SEEK_CUR)
		1021	const_eio (SEEK_END)
		1022
		1023	const_eio (MCL_FUTURE)
		1024	const_eio (MCL_CURRENT)
		1025
		1026	const_eio (MS_ASYNC)
		1027	const_eio (MS_INVALIDATE)
		1028	const_eio (MS_SYNC)
		1029
		1030	const_eio (MT_MODIFY)
		1031
		1032	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1033	const_eio (SYNC_FILE_RANGE_WRITE)
		1034	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1035
		1036	const_eio (FALLOC_FL_KEEP_SIZE)
		1037	const_eio (FALLOC_FL_PUNCH_HOLE)
		1038
		1039	const_eio (READDIR_DENTS)
		1040	const_eio (READDIR_DIRS_FIRST)
		1041	const_eio (READDIR_STAT_ORDER)
		1042	const_eio (READDIR_FOUND_UNKNOWN)
		1043
		1044	const_eio (DT_UNKNOWN)
		1045	const_eio (DT_FIFO)
		1046	const_eio (DT_CHR)
		1047	const_eio (DT_DIR)
		1048	const_eio (DT_BLK)
		1049	const_eio (DT_REG)
		1050	const_eio (DT_LNK)
		1051	const_eio (DT_SOCK)
		1052	const_eio (DT_WHT)
		1053	};
		1054
1182	HV *stash = gv_stashpv ("IO::AIO", 1);	1055	aio_stash = gv_stashpv ("IO::AIO" , 1);
1183	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1056	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
1184	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1057	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1185	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1058	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1186		1059
1187	create_pipe ();	1060	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1188	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1061	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1189		1062
1190	start_thread ();	1063	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1191	}
1192		1064
		1065	reinit ();
		1066	}
		1067
1193	void	1068	void
1194	min_parallel (int nthreads)	1069	reinit ()
1195	PROTOTYPE: $	1070	PROTOTYPE:
1196		1071
1197	void	1072	void
1198	max_parallel (int nthreads)	1073	max_poll_reqs (unsigned int nreqs)
1199	PROTOTYPE: $
1200
1201	int
1202	max_outstanding (int maxreqs)
1203	PROTOTYPE: $	1074	PROTOTYPE: $
1204	CODE:	1075	CODE:
1205	RETVAL = max_outstanding;	1076	eio_set_max_poll_reqs (nreqs);
		1077
		1078	void
		1079	max_poll_time (double nseconds)
		1080	PROTOTYPE: $
		1081	CODE:
		1082	eio_set_max_poll_time (nseconds);
		1083
		1084	void
		1085	min_parallel (unsigned int nthreads)
		1086	PROTOTYPE: $
		1087	CODE:
		1088	eio_set_min_parallel (nthreads);
		1089
		1090	void
		1091	max_parallel (unsigned int nthreads)
		1092	PROTOTYPE: $
		1093	CODE:
		1094	eio_set_max_parallel (nthreads);
		1095
		1096	void
		1097	max_idle (unsigned int nthreads)
		1098	PROTOTYPE: $
		1099	CODE:
		1100	eio_set_max_idle (nthreads);
		1101
		1102	void
		1103	idle_timeout (unsigned int seconds)
		1104	PROTOTYPE: $
		1105	CODE:
		1106	eio_set_idle_timeout (seconds);
		1107
		1108	void
		1109	max_outstanding (unsigned int maxreqs)
		1110	PROTOTYPE: $
		1111	CODE:
1206	max_outstanding = maxreqs;	1112	max_outstanding = maxreqs;
1207	OUTPUT:
1208	RETVAL
1209		1113
1210	void	1114	void
1211	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1115	aio_wd (SV8 pathname, SV callback=&PL_sv_undef)
1212	SV * pathname
1213	int flags
1214	int mode
1215	SV * callback
1216	PROTOTYPE: $$$;$
1217	PPCODE:	1116	PPCODE:
1218	{	1117	{
1219	dREQ;	1118	dREQ;
1220		1119
1221	req->type = REQ_OPEN;	1120	req->type = EIO_WD_OPEN;
1222	req->data = newSVsv (pathname);	1121	req_set_path1 (req, pathname);
1223	req->dataptr = SvPVbyte_nolen (req->data);
1224	req->fd = flags;
1225	req->mode = mode;
1226		1122
1227	REQ_SEND;	1123	REQ_SEND;
1228	}	1124	}
1229		1125
1230	void	1126	void
		1127	aio_open (SV8 pathname, int flags, int mode, SV callback=&PL_sv_undef)
		1128	PPCODE:
		1129	{
		1130	dREQ;
		1131
		1132	req->type = EIO_OPEN;
		1133	req_set_path1 (req, pathname);
		1134	req->int1 = flags;
		1135	req->int2 = mode;
		1136
		1137	REQ_SEND;
		1138	}
		1139
		1140	void
1231	aio_close (fh,callback=&PL_sv_undef)	1141	aio_fsync (SV fh, SV callback=&PL_sv_undef)
1232	SV * fh
1233	SV * callback
1234	PROTOTYPE: $;$
1235	ALIAS:	1142	ALIAS:
1236	aio_close = REQ_CLOSE
1237	aio_fsync = REQ_FSYNC	1143	aio_fsync = EIO_FSYNC
1238	aio_fdatasync = REQ_FDATASYNC	1144	aio_fdatasync = EIO_FDATASYNC
		1145	aio_syncfs = EIO_SYNCFS
1239	PPCODE:	1146	PPCODE:
1240	{	1147	{
		1148	int fd = s_fileno_croak (fh, 0);
1241	dREQ;	1149	dREQ;
1242		1150
1243	req->type = ix;	1151	req->type = ix;
1244	req->fh = newSVsv (fh);	1152	req->sv1 = newSVsv (fh);
1245	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1153	req->int1 = fd;
1246		1154
1247	REQ_SEND (req);	1155	REQ_SEND;
1248	}	1156	}
1249		1157
1250	void	1158	void
		1159	aio_sync_file_range (SV fh, off_t offset, size_t nbytes, UV flags, SV callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	int fd = s_fileno_croak (fh, 0);
		1163	dREQ;
		1164
		1165	req->type = EIO_SYNC_FILE_RANGE;
		1166	req->sv1 = newSVsv (fh);
		1167	req->int1 = fd;
		1168	req->offs = offset;
		1169	req->size = nbytes;
		1170	req->int2 = flags;
		1171
		1172	REQ_SEND;
		1173	}
		1174
		1175	void
		1176	aio_allocate (SV fh, int mode, off_t offset, size_t len, SV callback=&PL_sv_undef)
		1177	PPCODE:
		1178	{
		1179	int fd = s_fileno_croak (fh, 0);
		1180	dREQ;
		1181
		1182	req->type = EIO_FALLOCATE;
		1183	req->sv1 = newSVsv (fh);
		1184	req->int1 = fd;
		1185	req->int2 = mode;
		1186	req->offs = offset;
		1187	req->size = len;
		1188
		1189	REQ_SEND;
		1190	}
		1191
		1192	void
		1193	aio_close (SV fh, SV callback=&PL_sv_undef)
		1194	PPCODE:
		1195	{
		1196	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1197	int fd = s_fileno_croak (fh, 0);
		1198	dREQ;
		1199
		1200	if (expect_false (close_fd < 0))
		1201	{
		1202	int pipefd [2];
		1203
		1204	if (
		1205	#ifdef _WIN32
		1206	_pipe (pipefd, 1, _O_BINARY) < 0
		1207	#else
		1208	pipe (pipefd) < 0
		1209	\|\| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1210	#endif
		1211	\|\| close (pipefd [1]) < 0
		1212	)
		1213	abort (); /D/
		1214
		1215	close_fd = pipefd [0];
		1216	}
		1217
		1218	req->type = EIO_DUP2;
		1219	req->int1 = close_fd;
		1220	req->sv2 = newSVsv (fh);
		1221	req->int2 = fd;
		1222
		1223	REQ_SEND;
		1224	}
		1225
		1226	void
		1227	aio_seek (SV fh, SV offset, int whence, SV *callback=&PL_sv_undef)
		1228	PPCODE:
		1229	{
		1230	int fd = s_fileno_croak (fh, 0);
		1231	dREQ;
		1232
		1233	req->type = EIO_SEEK;
		1234	req->sv1 = newSVsv (fh);
		1235	req->int1 = fd;
		1236	req->offs = SvVAL64 (offset);
		1237	req->int2 = whence;
		1238
		1239	REQ_SEND;
		1240	}
		1241
		1242	void
1251	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1243	aio_read (SV fh, SV offset, SV length, SV8 data, IV dataoffset, SV *callback=&PL_sv_undef)
1252	SV * fh
1253	UV offset
1254	UV length
1255	SV * data
1256	UV dataoffset
1257	SV * callback
1258	ALIAS:	1244	ALIAS:
1259	aio_read = REQ_READ	1245	aio_read = EIO_READ
1260	aio_write = REQ_WRITE	1246	aio_write = EIO_WRITE
1261	PROTOTYPE: $$$$$;$
1262	PPCODE:	1247	PPCODE:
1263	{	1248	{
1264	aio_req req;
1265	STRLEN svlen;	1249	STRLEN svlen;
		1250	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1266	char *svptr = SvPVbyte (data, svlen);	1251	char *svptr = SvPVbyte (data, svlen);
1267		1252	UV len = SvUV (length);
1268	SvUPGRADE (data, SVt_PV);
1269	SvPOK_on (data);
1270		1253
1271	if (dataoffset < 0)	1254	if (dataoffset < 0)
1272	dataoffset += svlen;	1255	dataoffset += svlen;
1273		1256
1274	if (dataoffset < 0 \|\| dataoffset > svlen)	1257	if (dataoffset < 0 \|\| dataoffset > svlen)
1275	croak ("data offset outside of string");	1258	croak ("dataoffset outside of data scalar");
1276		1259
1277	if (ix == REQ_WRITE)	1260	if (ix == EIO_WRITE)
1278	{	1261	{
1279	/* write: check length and adjust. */	1262	/* write: check length and adjust. */
1280	if (length < 0 \|\| length + dataoffset > svlen)	1263	if (!SvOK (length) \|\| len + dataoffset > svlen)
1281	length = svlen - dataoffset;	1264	len = svlen - dataoffset;
1282	}	1265	}
1283	else	1266	else
1284	{	1267	{
1285	/* read: grow scalar as necessary */	1268	/* read: check type and grow scalar as necessary */
		1269	SvUPGRADE (data, SVt_PV);
		1270	if (SvLEN (data) >= SvCUR (data))
1286	svptr = SvGROW (data, length + dataoffset);	1271	svptr = SvGROW (data, len + dataoffset + 1);
		1272	else if (SvCUR (data) < len + dataoffset)
		1273	croak ("length + dataoffset outside of scalar, and cannot grow");
1287	}	1274	}
1288
1289	if (length < 0)
1290	croak ("length must not be negative");
1291		1275
1292	{	1276	{
1293	dREQ;	1277	dREQ;
1294		1278
1295	req->type = ix;	1279	req->type = ix;
1296	req->fh = newSVsv (fh);	1280	req->sv1 = newSVsv (fh);
1297	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1281	req->int1 = fd;
1298	: IoOFP (sv_2io (fh)));	1282	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1299	req->offset = offset;	1283	req->size = len;
1300	req->length = length;
1301	req->data = SvREFCNT_inc (data);	1284	req->sv2 = SvREFCNT_inc (data);
1302	req->dataptr = (char *)svptr + dataoffset;	1285	req->ptr2 = (char *)svptr + dataoffset;
		1286	req->stroffset = dataoffset;
1303		1287
1304	if (!SvREADONLY (data))	1288	if (!SvREADONLY (data))
1305	{	1289	{
1306	SvREADONLY_on (data);	1290	SvREADONLY_on (data);
1307	req->data2ptr = (void *)data;	1291	req->flags \|= FLAG_SV2_RO_OFF;
1308	}	1292	}
1309		1293
1310	REQ_SEND;	1294	REQ_SEND;
1311	}	1295	}
1312	}	1296	}
1313		1297
1314	void	1298	void
1315	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1299	aio_readlink (SV8 pathname, SV callback=&PL_sv_undef)
1316	SV * out_fh	1300	ALIAS:
1317	SV * in_fh	1301	aio_readlink = EIO_READLINK
1318	UV in_offset	1302	aio_realpath = EIO_REALPATH
1319	UV length
1320	SV * callback
1321	PROTOTYPE: $$$$;$
1322	PPCODE:	1303	PPCODE:
1323	{	1304	{
		1305	dREQ;
		1306
		1307	req->type = ix;
		1308	req_set_path1 (req, pathname);
		1309
		1310	REQ_SEND;
		1311	}
		1312
		1313	void
		1314	aio_sendfile (SV out_fh, SV in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1315	PPCODE:
		1316	{
		1317	int ifd = s_fileno_croak (in_fh , 0);
		1318	int ofd = s_fileno_croak (out_fh, 1);
1324	dREQ;	1319	dREQ;
1325		1320
1326	req->type = REQ_SENDFILE;	1321	req->type = EIO_SENDFILE;
1327	req->fh = newSVsv (out_fh);	1322	req->sv1 = newSVsv (out_fh);
1328	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1323	req->int1 = ofd;
1329	req->fh2 = newSVsv (in_fh);	1324	req->sv2 = newSVsv (in_fh);
1330	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1325	req->int2 = ifd;
1331	req->offset = in_offset;	1326	req->offs = in_offset;
1332	req->length = length;	1327	req->size = length;
1333		1328
1334	REQ_SEND;	1329	REQ_SEND;
1335	}	1330	}
1336		1331
1337	void	1332	void
1338	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1333	aio_readahead (SV fh, off_t offset, size_t length, SV callback=&PL_sv_undef)
1339	SV * fh
1340	UV offset
1341	IV length
1342	SV * callback
1343	PROTOTYPE: $$$;$
1344	PPCODE:	1334	PPCODE:
1345	{	1335	{
		1336	int fd = s_fileno_croak (fh, 0);
1346	dREQ;	1337	dREQ;
1347		1338
1348	req->type = REQ_READAHEAD;	1339	req->type = EIO_READAHEAD;
1349	req->fh = newSVsv (fh);	1340	req->sv1 = newSVsv (fh);
1350	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1341	req->int1 = fd;
1351	req->offset = offset;	1342	req->offs = offset;
1352	req->length = length;	1343	req->size = length;
1353		1344
1354	REQ_SEND;	1345	REQ_SEND;
1355	}	1346	}
1356		1347
1357	void	1348	void
1358	aio_stat (fh_or_path,callback=&PL_sv_undef)	1349	aio_stat (SV8 fh_or_path, SV callback=&PL_sv_undef)
1359	SV * fh_or_path
1360	SV * callback
1361	ALIAS:	1350	ALIAS:
1362	aio_stat = REQ_STAT	1351	aio_stat = EIO_STAT
1363	aio_lstat = REQ_LSTAT	1352	aio_lstat = EIO_LSTAT
		1353	aio_statvfs = EIO_STATVFS
1364	PPCODE:	1354	PPCODE:
1365	{	1355	{
1366	dREQ;	1356	dREQ;
1367		1357
1368	New (0, req->statdata, 1, Stat_t);	1358	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1369	if (!req->statdata)
1370	{
1371	req_free (req);
1372	croak ("out of memory during aio_req->statdata allocation");
1373	}
1374
1375	if (SvPOK (fh_or_path))
1376	{
1377	req->type = ix;
1378	req->data = newSVsv (fh_or_path);
1379	req->dataptr = SvPVbyte_nolen (req->data);
1380	}
1381	else
1382	{
1383	req->type = REQ_FSTAT;
1384	req->fh = newSVsv (fh_or_path);
1385	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1386	}
1387		1359
1388	REQ_SEND;	1360	REQ_SEND;
1389	}	1361	}
1390		1362
		1363	UV
		1364	major (UV dev)
		1365	ALIAS:
		1366	minor = 1
		1367	CODE:
		1368	RETVAL = ix ? major (dev) : minor (dev);
		1369	OUTPUT:
		1370	RETVAL
		1371
		1372	UV
		1373	makedev (UV maj, UV min)
		1374	CODE:
		1375	RETVAL = makedev (maj, min);
		1376	OUTPUT:
		1377	RETVAL
		1378
1391	void	1379	void
		1380	aio_utime (SV8 fh_or_path, SV atime, SV mtime, SV callback=&PL_sv_undef)
		1381	PPCODE:
		1382	{
		1383	dREQ;
		1384
		1385	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1386	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1387	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aio_truncate (SV8 fh_or_path, SV offset, SV *callback=&PL_sv_undef)
		1394	PPCODE:
		1395	{
		1396	dREQ;
		1397
		1398	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1399	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1400
		1401	REQ_SEND;
		1402	}
		1403
		1404	void
		1405	aio_chmod (SV8 fh_or_path, int mode, SV callback=&PL_sv_undef)
		1406	PPCODE:
		1407	{
		1408	dREQ;
		1409
		1410	req->int2 = mode;
		1411	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1412
		1413	REQ_SEND;
		1414	}
		1415
		1416	void
		1417	aio_chown (SV8 fh_or_path, SV uid, SV gid, SV callback=&PL_sv_undef)
		1418	PPCODE:
		1419	{
		1420	dREQ;
		1421
		1422	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1423	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1424	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1425
		1426	REQ_SEND;
		1427	}
		1428
		1429	void
		1430	aio_readdirx (SV8 pathname, IV flags, SV callback=&PL_sv_undef)
		1431	PPCODE:
		1432	{
		1433	dREQ;
		1434
		1435	req->type = EIO_READDIR;
		1436	req->int1 = flags \| EIO_READDIR_DENTS \| EIO_READDIR_CUSTOM1;
		1437
		1438	if (flags & EIO_READDIR_DENTS)
		1439	req->int1 \|= EIO_READDIR_CUSTOM2;
		1440
		1441	req_set_path1 (req, pathname);
		1442
		1443	REQ_SEND;
		1444	}
		1445
		1446	void
		1447	aio_mkdir (SV8 pathname, int mode, SV callback=&PL_sv_undef)
		1448	PPCODE:
		1449	{
		1450	dREQ;
		1451
		1452	req->type = EIO_MKDIR;
		1453	req->int2 = mode;
		1454	req_set_path1 (req, pathname);
		1455
		1456	REQ_SEND;
		1457	}
		1458
		1459	void
1392	aio_unlink (pathname,callback=&PL_sv_undef)	1460	aio_unlink (SV8 pathname, SV callback=&PL_sv_undef)
1393	SV * pathname
1394	SV * callback
1395	ALIAS:	1461	ALIAS:
1396	aio_unlink = REQ_UNLINK	1462	aio_unlink = EIO_UNLINK
1397	aio_rmdir = REQ_RMDIR	1463	aio_rmdir = EIO_RMDIR
1398	aio_readdir = REQ_READDIR	1464	aio_readdir = EIO_READDIR
1399	PPCODE:	1465	PPCODE:
1400	{	1466	{
1401	dREQ;	1467	dREQ;
1402		1468
1403	req->type = ix;	1469	req->type = ix;
1404	req->data = newSVsv (pathname);	1470	req_set_path1 (req, pathname);
1405	req->dataptr = SvPVbyte_nolen (req->data);	1471
1406
1407	REQ_SEND;	1472	REQ_SEND;
1408	}	1473	}
1409		1474
1410	void	1475	void
1411	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1476	aio_link (SV8 oldpath, SV8 newpath, SV *callback=&PL_sv_undef)
1412	SV * oldpath
1413	SV * newpath
1414	SV * callback
1415	ALIAS:	1477	ALIAS:
1416	aio_link = REQ_LINK	1478	aio_link = EIO_LINK
1417	aio_symlink = REQ_SYMLINK	1479	aio_symlink = EIO_SYMLINK
1418	aio_rename = REQ_RENAME	1480	aio_rename = EIO_RENAME
1419	PPCODE:	1481	PPCODE:
1420	{	1482	{
		1483	eio_wd wd2 = 0;
1421	dREQ;	1484	dREQ;
1422		1485
1423	req->type = ix;	1486	req->type = ix;
1424	req->fh = newSVsv (oldpath);	1487	req_set_path1 (req, oldpath);
1425	req->data2ptr = SvPVbyte_nolen (req->fh);	1488	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1426	req->data = newSVsv (newpath);	1489	req->int3 = (long)wd2;
1427	req->dataptr = SvPVbyte_nolen (req->data);
1428		1490
1429	REQ_SEND;	1491	REQ_SEND;
1430	}	1492	}
1431		1493
1432	void	1494	void
1433	aio_busy (delay,callback=&PL_sv_undef)	1495	aio_mknod (SV8 pathname, int mode, UV dev, SV callback=&PL_sv_undef)
1434	double delay
1435	SV * callback
1436	PPCODE:	1496	PPCODE:
1437	{	1497	{
1438	dREQ;	1498	dREQ;
1439		1499
1440	req->type = REQ_BUSY;	1500	req->type = EIO_MKNOD;
1441	req->fd = delay < 0. ? 0 : delay;	1501	req->int2 = (mode_t)mode;
1442	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1502	req->offs = dev;
1443		1503	req_set_path1 (req, pathname);
		1504
1444	REQ_SEND;	1505	REQ_SEND;
1445	}	1506	}
1446		1507
1447	void	1508	void
1448	aio_group (callback=&PL_sv_undef)	1509	aio_mtouch (SV8 data, IV offset = 0, SV length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1449	SV * callback	1510	ALIAS:
1450	PROTOTYPE: ;$	1511	aio_mtouch = EIO_MTOUCH
		1512	aio_msync = EIO_MSYNC
1451	PPCODE:	1513	PPCODE:
1452	{	1514	{
		1515	STRLEN svlen;
		1516	char *svptr = SvPVbyte (data, svlen);
		1517	UV len = SvUV (length);
		1518
		1519	if (offset < 0)
		1520	offset += svlen;
		1521
		1522	if (offset < 0 \|\| offset > svlen)
		1523	croak ("offset outside of scalar");
		1524
		1525	if (!SvOK (length) \|\| len + offset > svlen)
		1526	len = svlen - offset;
		1527
		1528	{
		1529	dREQ;
		1530
		1531	req->type = ix;
		1532	req->sv2 = SvREFCNT_inc (data);
		1533	req->ptr2 = (char *)svptr + offset;
		1534	req->size = len;
		1535	req->int1 = flags;
		1536
		1537	REQ_SEND;
		1538	}
		1539	}
		1540
		1541	void
		1542	aio_mlock (SV8 data, IV offset = 0, SV length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1543	PPCODE:
		1544	{
		1545	STRLEN svlen;
		1546	char *svptr = SvPVbyte (data, svlen);
		1547	UV len = SvUV (length);
		1548
		1549	if (offset < 0)
		1550	offset += svlen;
		1551
		1552	if (offset < 0 \|\| offset > svlen)
		1553	croak ("offset outside of scalar");
		1554
		1555	if (!SvOK (length) \|\| len + offset > svlen)
		1556	len = svlen - offset;
		1557
		1558	{
		1559	dREQ;
		1560
		1561	req->type = EIO_MLOCK;
		1562	req->sv2 = SvREFCNT_inc (data);
		1563	req->ptr2 = (char *)svptr + offset;
		1564	req->size = len;
		1565
		1566	REQ_SEND;
		1567	}
		1568	}
		1569
		1570	void
		1571	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->type = EIO_MLOCKALL;
		1577	req->int1 = flags;
		1578
		1579	REQ_SEND;
		1580	}
		1581
		1582	void
		1583	aio_fiemap (SV fh, off_t start, SV length, U32 flags, SV count, SV callback=&PL_sv_undef)
		1584	PPCODE:
		1585	{
		1586	int fd = s_fileno_croak (fh, 0);
1453	dREQ;	1587	dREQ;
1454		1588
1455	req->type = REQ_GROUP;	1589	req->type = EIO_CUSTOM;
1456	req_send (req);	1590	req->sv1 = newSVsv (fh);
		1591	req->int1 = fd;
1457		1592
1458	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1593	req->feed = fiemap;
1459	}	1594	#if HAVE_FIEMAP
		1595	/* keep our fingers crossed that the next two types are 64 bit */
		1596	req->offs = start;
		1597	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1598	req->int2 = flags;
		1599	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1600	#endif
1460		1601
		1602	REQ_SEND;
		1603	}
		1604
1461	void	1605	void
1462	aio_nop (callback=&PL_sv_undef)	1606	aio_busy (double delay, SV *callback=&PL_sv_undef)
1463	SV * callback
1464	PPCODE:	1607	PPCODE:
1465	{	1608	{
1466	dREQ;	1609	dREQ;
1467		1610
		1611	req->type = EIO_BUSY;
		1612	req->nv1 = delay < 0. ? 0. : delay;
		1613
		1614	REQ_SEND;
		1615	}
		1616
		1617	void
		1618	aio_group (SV *callback=&PL_sv_undef)
		1619	PPCODE:
		1620	{
		1621	dREQ;
		1622
1468	req->type = REQ_NOP;	1623	req->type = EIO_GROUP;
		1624
		1625	PUTBACK;
		1626	req_submit (req);
		1627	SPAGAIN;
		1628
		1629	XPUSHs (req_sv (req, aio_grp_stash));
		1630	}
		1631
		1632	void
		1633	aio_nop (SV *callback=&PL_sv_undef)
		1634	ALIAS:
		1635	aio_nop = EIO_NOP
		1636	aio_sync = EIO_SYNC
		1637	PPCODE:
		1638	{
		1639	dREQ;
		1640
		1641	req->type = ix;
1469		1642
1470	REQ_SEND;	1643	REQ_SEND;
1471	}	1644	}
1472		1645
1473	int	1646	int
1474	aioreq_pri (int pri = 0)	1647	aioreq_pri (int pri = 0)
1475	PROTOTYPE: ;$
1476	CODE:	1648	CODE:
1477	RETVAL = next_pri - PRI_BIAS;	1649	RETVAL = next_pri;
1478	if (items > 0)	1650	if (items > 0)
1479	{	1651	{
1480	if (pri < PRI_MIN) pri = PRI_MIN;	1652	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1481	if (pri > PRI_MAX) pri = PRI_MAX;	1653	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1482	next_pri = pri + PRI_BIAS;	1654	next_pri = pri;
1483	}	1655	}
1484	OUTPUT:	1656	OUTPUT:
1485	RETVAL	1657	RETVAL
1486		1658
1487	void	1659	void
1488	aioreq_nice (int nice = 0)	1660	aioreq_nice (int nice = 0)
1489	CODE:	1661	CODE:
1490	nice = next_pri - nice;	1662	nice = next_pri - nice;
1491	if (nice < PRI_MIN) nice = PRI_MIN;	1663	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1492	if (nice > PRI_MAX) nice = PRI_MAX;	1664	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1493	next_pri = nice + PRI_BIAS;	1665	next_pri = nice;
1494		1666
1495	void	1667	void
1496	flush ()	1668	flush ()
		1669	CODE:
		1670	while (eio_nreqs ())
		1671	{
		1672	poll_wait ();
		1673	poll_cb ();
		1674	}
		1675
		1676	int
		1677	poll ()
		1678	CODE:
		1679	poll_wait ();
		1680	RETVAL = poll_cb ();
		1681	OUTPUT:
		1682	RETVAL
		1683
		1684	int
		1685	poll_fileno ()
		1686	CODE:
		1687	RETVAL = s_epipe_fd (&respipe);
		1688	OUTPUT:
		1689	RETVAL
		1690
		1691	int
		1692	poll_cb (...)
1497	PROTOTYPE:	1693	PROTOTYPE:
1498	CODE:	1694	CODE:
1499	while (nreqs)
1500	{
1501	poll_wait ();
1502	poll_cb (0);	1695	RETVAL = poll_cb ();
1503	}
1504
1505	void
1506	poll()
1507	PROTOTYPE:
1508	CODE:
1509	if (nreqs)
1510	{
1511	poll_wait ();
1512	poll_cb (0);
1513	}
1514
1515	int
1516	poll_fileno()
1517	PROTOTYPE:
1518	CODE:
1519	RETVAL = respipe [0];
1520	OUTPUT:	1696	OUTPUT:
1521	RETVAL	1697	RETVAL
1522		1698
		1699	void
		1700	poll_wait ()
		1701	CODE:
		1702	poll_wait ();
		1703
1523	int	1704	int
1524	poll_cb(...)	1705	nreqs ()
1525	PROTOTYPE:
1526	CODE:	1706	CODE:
1527	RETVAL = poll_cb (0);	1707	RETVAL = eio_nreqs ();
1528	OUTPUT:	1708	OUTPUT:
1529	RETVAL	1709	RETVAL
1530		1710
1531	int	1711	int
1532	poll_some(int max = 0)	1712	nready ()
1533	PROTOTYPE: $
1534	CODE:	1713	CODE:
1535	RETVAL = poll_cb (max);	1714	RETVAL = eio_nready ();
1536	OUTPUT:	1715	OUTPUT:
1537	RETVAL	1716	RETVAL
1538		1717
1539	void	1718	int
1540	poll_wait()	1719	npending ()
1541	PROTOTYPE:
1542	CODE:	1720	CODE:
1543	if (nreqs)	1721	RETVAL = eio_npending ();
1544	poll_wait ();
1545
1546	int
1547	nreqs()
1548	PROTOTYPE:
1549	CODE:
1550	RETVAL = nreqs;
1551	OUTPUT:	1722	OUTPUT:
1552	RETVAL	1723	RETVAL
1553		1724
1554	int	1725	int
1555	nready()	1726	nthreads ()
1556	PROTOTYPE:
1557	CODE:	1727	CODE:
1558	RETVAL = get_nready ();	1728	RETVAL = eio_nthreads ();
1559	OUTPUT:	1729	OUTPUT:
1560	RETVAL	1730	RETVAL
1561		1731
1562	int	1732	int
1563	npending()	1733	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
1564	PROTOTYPE:	1734	CODE:
		1735	RETVAL = posix_fadvise (fh, offset, length, advice);
		1736	OUTPUT:
		1737	RETVAL
		1738
		1739	IV
		1740	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1741	CODE:
		1742	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1743	OUTPUT:
		1744	RETVAL
		1745
		1746	void
		1747	mmap (SV scalar, size_t length, int prot, int flags, SV fh = &PL_sv_undef, off_t offset = 0)
		1748	PPCODE:
		1749	sv_unmagic (scalar, MMAP_MAGIC);
		1750	{
		1751	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1752	void addr = (void )mmap (0, length, prot, flags, fd, offset);
		1753	if (addr == (void *)-1)
		1754	XSRETURN_NO;
		1755
		1756	sv_force_normal (scalar);
		1757
		1758	/* we store the length in mg_obj, as namlen is I32 :/ */
		1759	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1760	->mg_obj = (SV *)length;
		1761
		1762	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1763
		1764	if (!(prot & PROT_WRITE))
		1765	SvREADONLY_on (scalar);
		1766
		1767	if (SvLEN (scalar))
		1768	Safefree (SvPVX (scalar));
		1769
		1770	SvPVX (scalar) = (char *)addr;
		1771	SvCUR_set (scalar, length);
		1772	SvLEN_set (scalar, 0);
		1773	SvPOK_only (scalar);
		1774
		1775	XSRETURN_YES;
		1776	}
		1777
		1778	void
		1779	munmap (SV *scalar)
1565	CODE:	1780	CODE:
1566	RETVAL = get_npending ();	1781	sv_unmagic (scalar, MMAP_MAGIC);
		1782
		1783	int
		1784	madvise (SV scalar, off_t offset = 0, SV length = &PL_sv_undef, IV advice_or_prot)
		1785	ALIAS:
		1786	mprotect = 1
		1787	CODE:
		1788	{
		1789	STRLEN svlen;
		1790	void *addr = SvPVbyte (scalar, svlen);
		1791	size_t len = SvUV (length);
		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	addr = (void *)(((intptr_t)addr) + offset);
		1803	eio_page_align (&addr, &len);
		1804
		1805	switch (ix)
		1806	{
		1807	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1808	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1809	}
		1810	}
1567	OUTPUT:	1811	OUTPUT:
1568	RETVAL	1812	RETVAL
		1813
		1814	int
		1815	munlock (SV scalar, off_t offset = 0, SV length = &PL_sv_undef)
		1816	CODE:
		1817	{
		1818	STRLEN svlen;
		1819	void *addr = SvPVbyte (scalar, svlen);
		1820	size_t len = SvUV (length);
		1821
		1822	if (offset < 0)
		1823	offset += svlen;
		1824
		1825	if (offset < 0 \|\| offset > svlen)
		1826	croak ("offset outside of scalar");
		1827
		1828	if (!SvOK (length) \|\| len + offset > svlen)
		1829	len = svlen - offset;
		1830
		1831	addr = (void *)(((intptr_t)addr) + offset);
		1832	eio_page_align (&addr, &len);
		1833	#if _POSIX_MEMLOCK_RANGE
		1834	RETVAL = munlock (addr, len);
		1835	#else
		1836	RETVAL = EIO_ENOSYS ();
		1837	#endif
		1838	}
		1839	OUTPUT:
		1840	RETVAL
		1841
		1842	int
		1843	munlockall ()
		1844	CODE:
		1845	#if _POSIX_MEMLOCK
		1846	munlockall ();
		1847	#else
		1848	RETVAL = EIO_ENOSYS ();
		1849	#endif
		1850	OUTPUT:
		1851	RETVAL
		1852
		1853	int
		1854	splice (aio_rfd rfh, SV off_in, aio_wfd wfh, SV off_out, size_t length, unsigned int flags)
		1855	CODE:
		1856	{
		1857	#if HAVE_LINUX_SPLICE
		1858	loff_t off_in_, off_out_;
		1859	RETVAL = splice (
		1860	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1861	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1862	length, flags
		1863	);
		1864	#else
		1865	RETVAL = EIO_ENOSYS ();
		1866	#endif
		1867	}
		1868	OUTPUT:
		1869	RETVAL
		1870
		1871	int
		1872	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1873	CODE:
		1874	#if HAVE_LINUX_SPLICE
		1875	RETVAL = tee (rfh, wfh, length, flags);
		1876	#else
		1877	RETVAL = EIO_ENOSYS ();
		1878	#endif
		1879	OUTPUT:
		1880	RETVAL
		1881
		1882	int
		1883	pipesize (aio_rfd rfh, int new_size = -1)
		1884	PROTOTYPE: $;$
		1885	CODE:
		1886	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		1887	if (new_size >= 0)
		1888	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		1889	else
		1890	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		1891	#else
		1892	errno = ENOSYS;
		1893	RETVAL = -1;
		1894	#endif
		1895	OUTPUT:
		1896	RETVAL
		1897
		1898	void _on_next_submit (SV *cb)
		1899	CODE:
		1900	SvREFCNT_dec (on_next_submit);
		1901	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1569		1902
1570	PROTOTYPES: DISABLE	1903	PROTOTYPES: DISABLE
		1904
		1905	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1906
		1907	BOOT:
		1908	{
		1909	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1910	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1911	}
		1912
		1913	void
		1914	DESTROY (SV *self)
		1915	CODE:
		1916	{
		1917	aio_wd wd = SvAIO_WD (self);
		1918	#if HAVE_AT
		1919	{
		1920	SV *callback = &PL_sv_undef;
		1921	dREQ; /* clobbers next_pri :/ */
		1922	next_pri = req->pri; /* restore next_pri */
		1923	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1924	req->type = EIO_WD_CLOSE;
		1925	req->wd = wd;
		1926	REQ_SEND;
		1927	}
		1928	#else
		1929	eio_wd_close_sync (wd);
		1930	#endif
		1931	}
1571		1932
1572	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1933	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1573		1934
1574	void	1935	void
1575	cancel (aio_req_ornot req)	1936	cancel (aio_req_ornot req)
1576	CODE:	1937	CODE:
1577	req_cancel (req);	1938	eio_cancel (req);
1578		1939
1579	void	1940	void
1580	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1941	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1581	CODE:	1942	PPCODE:
		1943	{
		1944	if (GIMME_V != G_VOID)
		1945	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1946
		1947	if (items > 1)
		1948	{
		1949	SV *cb_cv =get_cb (callback);
		1950
1582	SvREFCNT_dec (req->callback);	1951	SvREFCNT_dec (req->callback);
1583	req->callback = newSVsv (callback);	1952	req->callback = SvREFCNT_inc (cb_cv);
		1953	}
		1954	}
1584		1955
1585	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1956	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1586		1957
1587	void	1958	void
1588	add (aio_req grp, ...)	1959	add (aio_req grp, ...)
1589	PPCODE:	1960	PPCODE:
1590	{	1961	{
1591	int i;	1962	int i;
1592	aio_req req;
1593		1963
1594	if (grp->fd == 2)	1964	if (grp->int1 == 2)
1595	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1965	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1596		1966
1597	for (i = 1; i < items; ++i )	1967	for (i = 1; i < items; ++i )
1598	{	1968	{
		1969	aio_req req;
		1970
1599	if (GIMME_V != G_VOID)	1971	if (GIMME_V != G_VOID)
1600	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1972	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1601		1973
1602	req = SvAIO_REQ (ST (i));	1974	req = SvAIO_REQ (ST (i));
1603		1975
1604	if (req)	1976	if (req)
1605	{	1977	eio_grp_add (grp, req);
1606	++grp->length;
1607	req->grp = grp;
1608
1609	req->grp_prev = 0;
1610	req->grp_next = grp->grp_first;
1611
1612	if (grp->grp_first)
1613	grp->grp_first->grp_prev = req;
1614
1615	grp->grp_first = req;
1616	}
1617	}	1978	}
1618	}	1979	}
1619		1980
1620	void	1981	void
1621	cancel_subs (aio_req_ornot req)	1982	cancel_subs (aio_req_ornot req)
1630	AV *av;	1991	AV *av;
1631		1992
1632	grp->errorno = errno;	1993	grp->errorno = errno;
1633		1994
1634	av = newAV ();	1995	av = newAV ();
		1996	av_extend (av, items - 1);
1635		1997
1636	for (i = 1; i < items; ++i )	1998	for (i = 1; i < items; ++i )
1637	av_push (av, newSVsv (ST (i)));	1999	av_push (av, newSVsv (ST (i)));
1638		2000
1639	SvREFCNT_dec (grp->data);	2001	SvREFCNT_dec (grp->sv1);
1640	grp->data = (SV *)av;	2002	grp->sv1 = (SV *)av;
1641	}	2003	}
1642		2004
1643	void	2005	void
1644	errno (aio_req grp, int errorno = errno)	2006	errno (aio_req grp, int errorno = errno)
1645	CODE:	2007	CODE:
1646	grp->errorno = errorno;	2008	grp->errorno = errorno;
1647		2009
1648	void	2010	void
1649	limit (aio_req grp, int limit)	2011	limit (aio_req grp, int limit)
1650	CODE:	2012	CODE:
1651	grp->fd2 = limit;	2013	eio_grp_limit (grp, limit);
1652	aio_grp_feed (grp);
1653		2014
1654	void	2015	void
1655	feed (aio_req grp, SV *callback=&PL_sv_undef)	2016	feed (aio_req grp, SV *callback=&PL_sv_undef)
1656	CODE:	2017	CODE:
1657	{	2018	{
1658	SvREFCNT_dec (grp->fh2);	2019	SvREFCNT_dec (grp->sv2);
1659	grp->fh2 = newSVsv (callback);	2020	grp->sv2 = newSVsv (callback);
		2021	grp->feed = aio_grp_feed;
1660		2022
1661	if (grp->fd2 <= 0)	2023	if (grp->int2 <= 0)
1662	grp->fd2 = 2;	2024	grp->int2 = 2;
1663		2025
1664	aio_grp_feed (grp);	2026	eio_grp_limit (grp, grp->int2);
1665	}	2027	}
1666		2028

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Comparing IO-AIO/AIO.xs (file contents): Revision 1.80 by root, Fri Oct 27 19:17:23 2006 UTC vs. Revision 1.229 by root, Fri Apr 11 05:19:40 2014 UTC

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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.80 by root, Fri Oct 27 19:17:23 2006 UTC vs.
Revision 1.229 by root, Fri Apr 11 05:19:40 2014 UTC