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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.99 by root, Fri Jun 1 05:51:21 2007 UTC vs.
Revision 1.210 by root, Fri Apr 6 11:39:25 2012 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23	#include <utime.h>
24		19
25	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
26	# if __linux	24	#if __linux__
27	# include <sys/sendfile.h>	25	# include <linux/fs.h>
28	# elif __freebsd	26	# ifdef FS_IOC_FIEMAP
29	# include <sys/socket.h>	27	# include <linux/fiemap.h>
30	# include <sys/uio.h>	28	# define HAVE_FIEMAP 1
31	# elif __hpux
32	# include <sys/socket.h>
33	# elif __solaris /* not yet */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif	29	# endif
38	#endif	30	#endif
39		31
40	/* number of seconds after which idle threads exit */	32	/* perl namespace pollution */
41	#define IDLE_TIMEOUT 10	33	#undef VERSION
42		34
43	/* used for struct dirent, AIX doesn't provide it */	35	/* perl stupidly overrides readdir and maybe others */
44	#ifndef NAME_MAX	36	/* with thread-unsafe versions, imagine that :( */
45	# define NAME_MAX 4096	37	#undef readdir
		38	#undef opendir
		39	#undef closedir
		40
		41	#ifdef _WIN32
		42
		43	// perl overrides all those nice libc functions
		44
		45	#undef malloc
		46	#undef free
		47	#undef open
		48	#undef read
		49	#undef write
		50	#undef send
		51	#undef recv
		52	#undef stat
		53	#undef lstat
		54	#undef fstat
		55	#undef truncate
		56	#undef ftruncate
		57	#undef open
		58	#undef link
		59	#undef close
		60	#undef unlink
		61	#undef mkdir
		62	#undef rmdir
		63	#undef rename
		64	#undef lseek
		65	#undef opendir
		66	#undef readdir
		67	#undef closedir
		68	#undef chmod
		69	#undef fchmod
		70	#undef dup
		71	#undef dup2
		72	#undef abort
		73	#undef pipe
		74
		75	#define EIO_STRUCT_STAT struct _stati64
		76	#define EIO_STRUCT_STATI64
		77
		78	#else
		79
		80	#include <sys/time.h>
		81	#include <sys/select.h>
		82	#include <unistd.h>
		83	#include <utime.h>
		84	#include <signal.h>
		85
		86	#define EIO_STRUCT_STAT Stat_t
		87
46	#endif	88	#endif
47		89
48	/* buffer size for various temporary buffers */	90	/*****************************************************************************/
49	#define AIO_BUFSIZE 65536
50		91
51	#define dBUF \	92	#if __GNUC__ >= 3
52	char *aio_buf; \	93	# define expect(expr,value) __builtin_expect ((expr),(value))
53	LOCK (wrklock); \	94	#else
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	95	# define expect(expr,value) (expr)
55	UNLOCK (wrklock); \	96	#endif
56	if (!aio_buf) \	97
57	return -1;	98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
58		102
59	typedef SV SV8; /* byte-sv, used for argument-checking */	103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	#if !HAVE_POSIX_FADVISE
		129	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		130	#endif
		131
		132	#if !HAVE_POSIX_MADVISE
		133	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		134	#endif
		135
		136	#ifndef MAP_ANONYMOUS
		137	# ifdef MAP_ANON
		138	# define MAP_ANONYMOUS MAP_ANON
		139	# else
		140	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		141	# endif
		142	#endif
		143
		144	/* defines all sorts of constants to 0 unless they are already defined */
		145	#include "def0.h"
		146
		147	#ifndef makedev
		148	# define makedev(maj,min) (((maj) << 8) | (min))
		149	#endif
		150	#ifndef major
		151	# define major(dev) ((dev) >> 8)
		152	#endif
		153	#ifndef minor
		154	# define minor(dev) ((dev) & 0xff)
		155	#endif
		156
		157	#ifndef PAGESIZE
		158	# define PAGESIZE sysconf (_SC_PAGESIZE)
		159	#endif
		160
		161	/*****************************************************************************/
		162
		163	static void
		164	fiemap (eio_req *req)
		165	{
		166	req->result = -1;
		167
		168	#if HAVE_FIEMAP
		169	for (;;)
		170	{
		171	int count = req->int3;
		172
		173	if (count < 0)
		174	{
		175	struct fiemap fiemap;
		176
		177	fiemap.fm_start = req->offs;
		178	fiemap.fm_length = req->size;
		179	fiemap.fm_flags = req->int2;
		180	fiemap.fm_extent_count = 0;
		181
		182	if (ioctl (req->int1, FS_IOC_FIEMAP, &fiemap))
		183	return;
		184
		185	count = fiemap.fm_mapped_extents;
		186	}
		187
		188	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		189	errno = ENOMEM;
		190	if (!fiemap)
		191	return;
		192
		193	req->ptr1 = fiemap;
		194	req->flags |= EIO_FLAG_PTR1_FREE;
		195
		196	fiemap->fm_start = req->offs;
		197	fiemap->fm_length = req->size;
		198	fiemap->fm_flags = req->int2;
		199	fiemap->fm_extent_count = count;
		200
		201	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		202	return;
		203
		204	if (req->int3 >= 0)
		205	break; /* when not autosizing we are done */
		206
		207	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		208	break; /* autosizing successful, we are done */
		209
		210	free (fiemap);
		211	}
		212
		213	req->result = 0;
		214
		215	#else
		216	errno = ENOSYS;
		217	#endif
		218	}
		219
		220	/*****************************************************************************/
60		221
61	enum {	222	enum {
62	REQ_QUIT,	223	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	224	};
77		225
78	#define AIO_REQ_KLASS "IO::AIO::REQ"
79	#define AIO_GRP_KLASS "IO::AIO::GRP"
80
81	typedef struct aio_cb
82	{
83	struct aio_cb *volatile next;
84
85	SV *callback;
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92
93	STRLEN stroffset;
94	int type;
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98
99	unsigned char flags;
100	unsigned char pri;
101
102	SV *self; /* the perl counterpart of this request, if any */
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
104	} aio_cb;
105
106	enum {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */
108	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};
111
112	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
113	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
		228	typedef eio_wd aio_wd;
114		229
115	enum {	230	static SV *on_next_submit;
116	PRI_MIN = -4,	231	static int next_pri = EIO_PRI_DEFAULT;
117	PRI_MAX = 4,	232	static int max_outstanding;
118		233
119	DEFAULT_PRI = 0,	234	static s_epipe respipe;
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123		235
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135
136	static thread_t main_tid;
137	static int main_sig;
138	static int block_sig_level;
139
140	void block_sig ()
141	{
142	sigset_t ss;
143
144	if (block_sig_level++)
145	return;
146
147	if (!main_sig)
148	return;
149
150	sigemptyset (&ss);
151	sigaddset (&ss, main_sig);
152	pthread_sigmask (SIG_BLOCK, &ss, 0);
153	}
154
155	void unblock_sig ()
156	{
157	sigset_t ss;
158
159	if (--block_sig_level)
160	return;
161
162	if (!main_sig)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{
195	closedir (wrk->dirp);
196	wrk->dirp = 0;
197	}
198
199	if (wrk->dbuf)
200	{
201	free (wrk->dbuf);
202	wrk->dbuf = 0;
203	}
204	}
205
206	static void worker_free (worker *wrk)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;
301
302	--q->size;
303
304	for (pri = NUM_PRI; pri--; )
305	{
306	aio_req req = q->qs[pri];
307
308	if (req)
309	{
310	if (!(q->qs[pri] = req->next))
311	q->qe[pri] = 0;
312
313	return req;
314	}
315	}
316
317	abort ();
318	}
319
320	static int poll_cb ();
321	static int req_invoke (aio_req req);
322	static void req_free (aio_req req);	236	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	237	static void req_cancel (aio_req req);
324		238
		239	static void
		240	want_poll (void)
		241	{
		242	/* write a dummy byte to the pipe so fh becomes ready */
		243	s_epipe_signal (&respipe);
		244	}
		245
		246	static void
		247	done_poll (void)
		248	{
		249	/* read any signals sent by the worker threads */
		250	s_epipe_drain (&respipe);
		251	}
		252
325	/* must be called at most once */	253	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	254	static SV *
		255	req_sv (aio_req req, HV *stash)
327	{	256	{
328	if (!req->self)	257	if (!req->self)
329	{	258	{
330	req->self = (SV *)newHV ();	259	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	261	}
333		262
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	263	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	264	}
336		265
337	static aio_req SvAIO_REQ (SV *sv)	266	static SV *
		267	newSVaio_wd (aio_wd wd)
		268	{
		269	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		270	}
		271
		272	static aio_req
		273	SvAIO_REQ (SV *sv)
338	{	274	{
339	MAGIC *mg;	275	MAGIC *mg;
340		276
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	277	if (!SvROK (sv)
		278	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
343		283
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		285
346	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	287	}
348		288
		289	static aio_wd
		290	SvAIO_WD (SV *sv)
		291	{
		292	if (!SvROK (sv)
		293	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		294	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		295	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		296
		297	return (aio_wd)(long)SvIVX (SvRV (sv));
		298	}
		299
		300	static void
349	static void aio_grp_feed (aio_req grp)	301	aio_grp_feed (aio_req grp)
350	{	302	{
351	block_sig ();	303	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	304	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	305	dSP;
360		306
361	ENTER;	307	ENTER;
362	SAVETMPS;	308	SAVETMPS;
363	PUSHMARK (SP);	309	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	311	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	313	SPAGAIN;
368	FREETMPS;	314	FREETMPS;
369	LEAVE;	315	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	316	}
380
381	unblock_sig ();
382	}	317	}
383		318
384	static void aio_grp_dec (aio_req grp)	319	static void
		320	req_submit (eio_req *req)
385	{	321	{
386	--grp->size;	322	eio_submit (req);
387		323
388	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	325	{
394	block_sig ();	326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
395		328
396	if (!req_invoke (grp))	329	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		330
403	req_free (grp);	331	PUSHMARK (SP);
404	unblock_sig ();	332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
405	}	334	}
406	}	335	}
407		336
		337	static int
408	static int req_invoke (aio_req req)	338	req_invoke (eio_req *req)
409	{	339	{
410	dSP;
411
412	if (req->flags & FLAG_SV1_RO_OFF)	340	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv1);	341	SvREADONLY_off (req->sv2);
414		342
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	343	if (!EIO_CANCELLED (req) && req->callback)
416	{	344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
417	ENTER;	349	ENTER;
418	SAVETMPS;	350	SAVETMPS;
419	PUSHMARK (SP);	351	PUSHMARK (SP);
420	EXTEND (SP, 1);	352	EXTEND (SP, 1);
421		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
		356	{
		357	sv_result = sv_result_cache; sv_result_cache = 0;
		358	SvIV_set (sv_result, req->result);
		359	SvIOK_only (sv_result);
		360	}
		361	else
		362	{
		363	sv_result = newSViv (req->result);
		364	SvREADONLY_on (sv_result);
		365	}
		366
422	switch (req->type)	367	switch (req->type)
423	{	368	{
		369	case EIO_WD_OPEN:
		370	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		371	break;
		372
424	case REQ_READDIR:	373	case EIO_READDIR:
425	{	374	{
426	SV *rv = &PL_sv_undef;	375	SV *rv = &PL_sv_undef;
427		376
428	if (req->result >= 0)	377	if (req->result >= 0)
429	{	378	{
430	int i;	379	int i;
431	char *buf = req->ptr2;	380	char *names = (char *)req->ptr2;
		381	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	382	AV *av = newAV ();
433		383
434	av_extend (av, req->result - 1);	384	av_extend (av, req->result - 1);
435		385
436	for (i = 0; i < req->result; ++i)	386	for (i = 0; i < req->result; ++i)
437	{	387	{
438	SV *sv = newSVpv (buf, 0);	388	if (req->int1 & EIO_READDIR_DENTS)
		389	{
		390	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		391
		392	if (req->int1 & EIO_READDIR_CUSTOM2)
		393	{
		394	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		395	AV *avent = newAV ();
		396
		397	av_extend (avent, 2);
		398
		399	if (!sv_type [ent->type])
		400	{
		401	sv_type [ent->type] = newSViv (ent->type);
		402	SvREADONLY_on (sv_type [ent->type]);
		403	}
		404
		405	av_store (avent, 0, namesv);
		406	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		407	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		408
		409	av_store (av, i, newRV_noinc ((SV *)avent));
		410	}
		411	else
440	av_store (av, i, sv);	412	av_store (av, i, namesv);
		413
		414	++ent;
		415	}
		416	else
		417	{
		418	SV *name = newSVpv (names, 0);
		419	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	420	names += SvCUR (name) + 1;
		421	}
442	}	422	}
443		423
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	424	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	425	}
446		426
447	PUSHs (rv);	427	PUSHs (rv);
		428
		429	if (req->int1 & EIO_READDIR_CUSTOM1)
		430	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	431	}
449	break;	432	break;
450		433
451	case REQ_OPEN:	434	case EIO_OPEN:
452	{	435	{
453	/* convert fd to fh */	436	/* convert fd to fh */
454	SV *fh;	437	SV *fh = &PL_sv_undef;
455		438
456	PUSHs (sv_2mortal (newSViv (req->result)));	439	if (req->result >= 0)
457	PUTBACK;	440	{
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	441	GV *gv = (GV *)sv_newmortal ();
459	SPAGAIN;	442	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		443	char sym [64];
		444	int symlen;
		445
		446	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		447	gv_init (gv, aio_stash, sym, symlen, 0);
460		448
461	fh = POPs;	449	symlen = snprintf (
462	PUSHMARK (SP);	450	sym,
		451	sizeof (sym),
		452	"%s&=%d",
		453	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		454	(int)req->result
		455	);
		456
		457	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		458	fh = (SV *)gv;
		459	}
		460
463	XPUSHs (fh);	461	PUSHs (fh);
464	}	462	}
465	break;	463	break;
466		464
		465	case EIO_STATVFS:
		466	case EIO_FSTATVFS:
		467	{
		468	SV *rv = &PL_sv_undef;
		469
		470	#ifndef _WIN32
		471	if (req->result >= 0)
		472	{
		473	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		474	HV *hv = newHV ();
		475
		476	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		477
		478	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		479	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		480	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		481	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		482	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		483	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		484	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		485	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		486	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		487	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		488	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		489	}
		490	#endif
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
467	case REQ_GROUP:	497	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
469		499
470	if (req->sv1)	500	if (req->sv1)
471	{	501	{
472	int i;	502	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
478	}	508	}
479	break;	509	break;
480		510
481	case REQ_NOP:	511	case EIO_NOP:
482	case REQ_BUSY:	512	case EIO_BUSY:
483	break;	513	break;
484		514
485	case REQ_READLINK:	515	case EIO_READLINK:
		516	case EIO_REALPATH:
486	if (req->result > 0)	517	if (req->result > 0)
		518	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		519	break;
		520
		521	case EIO_STAT:
		522	case EIO_LSTAT:
		523	case EIO_FSTAT:
		524	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		525
		526	if (!(PL_laststatval = req->result))
		527	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		528	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		529
		530	PUSHs (sv_result);
		531	break;
		532
		533	case EIO_SEEK:
		534	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		535	break;
		536
		537	case EIO_READ:
		538	{
		539	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		540	*SvEND (req->sv2) = 0;
		541	SvPOK_only (req->sv2);
		542	SvSETMAGIC (req->sv2);
		543	PUSHs (sv_result);
		544	}
		545	break;
		546
		547	case EIO_CUSTOM:
		548	if (req->feed == fiemap)
487	{	549	{
488	SvCUR_set (req->sv2, req->result);
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);	550	if (!req->result)
		551	{
		552	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		553
		554	if (fiemap->fm_extent_count)
		555	{
		556	AV *av = newAV ();
		557	int i;
		558
		559	while (fiemap->fm_mapped_extents)
		560	{
		561	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		562	AV *ext_av = newAV ();
		563
		564	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		565	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		566	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		567	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		568
		569	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		570	}
		571
		572	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		573	}
		574	else
		575	{
		576	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		577	PUSHs (sv_result);
		578	}
		579	}
491	}	580	}
		581	else
		582	PUSHs (sv_result);
492	break;	583	break;
493		584
494	case REQ_STAT:	585	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
495	case REQ_LSTAT:	586	if (req->result > 0)
496	case REQ_FSTAT:	587	SvIV_set (sv_result, 0);
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	588	/* FALLTHROUGH */
498	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));
501	break;
502
503	case REQ_READ:
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));
507	break;
508		589
509	default:	590	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	591	PUSHs (sv_result);
511	break;	592	break;
512	}	593	}
513		594
514	errno = req->errorno;	595	errno = req->errorno;
515		596
516	PUTBACK;	597	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	598	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	599	SPAGAIN;
		600
		601	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		602	SvREFCNT_dec (sv_result);
		603	else
		604	sv_result_cache = sv_result;
519		605
520	FREETMPS;	606	FREETMPS;
521	LEAVE;	607	LEAVE;
		608
		609	PUTBACK;
522	}	610	}
523		611
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	612	return !!SvTRUE (ERRSV);
539	}	613	}
540		614
541	static void req_free (aio_req req)	615	static void
		616	req_destroy (aio_req req)
542	{	617	{
543	if (req->self)	618	if (req->self)
544	{	619	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	620	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	621	SvREFCNT_dec (req->self);
547	}	622	}
548		623
549	SvREFCNT_dec (req->sv1);	624	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	625	SvREFCNT_dec (req->sv2);
		626	SvREFCNT_dec (req->sv3);
		627	SvREFCNT_dec (req->sv4);
551	SvREFCNT_dec (req->callback);	628	SvREFCNT_dec (req->callback);
552		629
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	630	free (req);
557	}	631	}
558		632
		633	static void
559	static void req_cancel_subs (aio_req grp)	634	req_cancel_subs (aio_req grp)
560	{	635	{
561	aio_req sub;
562
563	if (grp->type != REQ_GROUP)	636	if (grp->type != EIO_GROUP)
564	return;	637	return;
565		638
566	SvREFCNT_dec (grp->sv2);	639	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	640	grp->sv2 = 0;
568		641
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	642	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	643	}
572		644
573	static void req_cancel (aio_req req)	645	static void ecb_cold
		646	create_respipe (void)
574	{	647	{
575	req->flags |= FLAG_CANCELLED;	648	if (s_epipe_renew (&respipe))
576		649	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	650	}
579		651
580	static void *aio_proc(void *arg);	652	static void
581		653	poll_wait (void)
582	static void start_thread (void)
583	{	654	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()
676	{
677	fd_set rfd;
678
679	while (nreqs)	655	while (eio_nreqs ())
680	{	656	{
681	int size;	657	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	658
		659	X_LOCK (reslock);
683	size = res_queue.size;	660	size = res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	661	X_UNLOCK (reslock);
685		662
686	if (size)	663	if (size)
687	return;	664	return;
688		665
689	maybe_start_thread ();	666	etp_maybe_start_thread ();
690		667
691	FD_ZERO(&rfd);	668	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	669	}
696	}	670	}
697		671
698	static int poll_cb ()	672	static int
		673	poll_cb (void)
699	{	674	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	675	for (;;)
713	{	676	{
714	for (;;)	677	int res = eio_poll ();
		678
		679	if (res > 0)
		680	croak (0);
		681
		682	if (!max_outstanding || max_outstanding > eio_nreqs ())
		683	return res;
		684
		685	poll_wait ();
		686	}
		687	}
		688
		689	static void ecb_cold
		690	reinit (void)
		691	{
		692	create_respipe ();
		693
		694	if (eio_init (want_poll, done_poll) < 0)
		695	croak ("IO::AIO: unable to initialise eio library");
		696	}
		697
		698	/*****************************************************************************/
		699
		700	#if !_POSIX_MAPPED_FILES
		701	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		702	# define munmap(addr,length) (errno = ENOSYS, -1)
		703	#endif
		704
		705	#if !_POSIX_MEMORY_PROTECTION
		706	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		707	# define PROT_NONE 0
		708	# define PROT_WRITE 0
		709	# define MAP_PRIVATE 0
		710	# define MAP_SHARED 0
		711	# define MAP_FIXED 0
		712	#endif
		713
		714	#define MMAP_MAGIC PERL_MAGIC_ext
		715
		716	static int ecb_cold
		717	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		718	{
		719	int old_errno = errno;
		720	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		721	errno = old_errno;
		722
		723	mg->mg_obj = 0; /* just in case */
		724
		725	SvREADONLY_off (sv);
		726
		727	if (SvPVX (sv) != mg->mg_ptr)
		728	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		729
		730	SvCUR_set (sv, 0);
		731	SvPVX (sv) = 0;
		732	SvOK_off (sv);
		733
		734	return 0;
		735	}
		736
		737	static MGVTBL mmap_vtbl = {
		738	0, 0, 0, 0, mmap_free
		739	};
		740
		741	/*****************************************************************************/
		742
		743	static SV *
		744	get_cb (SV *cb_sv)
		745	{
		746	SvGETMAGIC (cb_sv);
		747	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		748	}
		749
		750	static aio_req ecb_noinline
		751	dreq (SV *callback)
		752	{
		753	SV *cb_cv;
		754	aio_req req;
		755	int req_pri = next_pri;
		756	next_pri = EIO_PRI_DEFAULT;
		757
		758	cb_cv = get_cb (callback);
		759
		760	req = calloc (sizeof (*req), 1);
		761	if (!req)
		762	croak ("out of memory during eio_req allocation");
		763
		764	req->callback = SvREFCNT_inc (cb_cv);
		765	req->pri = req_pri;
		766
		767	return req;
		768	}
		769
		770	#define dREQ \
		771	aio_req req = dreq (callback); \
		772
		773	#define REQ_SEND \
		774	PUTBACK; \
		775	req_submit (req); \
		776	SPAGAIN; \
		777	\
		778	if (GIMME_V != G_VOID) \
		779	XPUSHs (req_sv (req, aio_req_stash));
		780
		781	ecb_inline void
		782	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		783	{
		784	if (expect_false (SvROK (path)))
		785	{
		786	SV *rv = SvRV (path);
		787	SV *wdob;
		788
		789	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
715	{	790	{
716	maybe_start_thread ();	791	path = AvARRAY (rv)[1];
		792	wdob = AvARRAY (rv)[0];
717		793
718	LOCK (reslock);	794	if (SvOK (wdob))
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{	795	{
723	--npending;	796	*wd = SvAIO_WD (wdob);
724		797	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}	798	}
746	else	799	else
747	{	800	*wd = EIO_INVALID_WD;
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);
753	}
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}	801	}
		802	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		803	{
		804	*wd = (aio_wd)(long)SvIVX (rv);
		805	*wdsv = SvREFCNT_inc_NN (rv);
		806	*ptr = ".";
		807	return; /* path set to "." */
		808	}
		809	else
		810	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		811	}
771		812
772	if (nreqs <= max_outstanding)	813	*pathsv = newSVsv (path);
		814	*ptr = SvPVbyte_nolen (*pathsv);
		815	}
		816
		817	static void ecb_noinline
		818	req_set_path1 (aio_req req, SV *path)
		819	{
		820	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		821	}
		822
		823	static void ecb_noinline
		824	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		825	{
		826	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		827
		828	switch (SvTYPE (rv))
		829	{
		830	case SVt_PVIO:
		831	case SVt_PVLV:
		832	case SVt_PVGV:
		833	req->type = type_fh;
		834	req->sv1 = newSVsv (fh_or_path);
		835	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773	break;	836	break;
774		837
775	poll_wait ();	838	default:
776		839	req->type = type_path;
777	++maxreqs;	840	req_set_path1 (req, fh_or_path);
		841	break;
778	}	842	}
779
780	unblock_sig ();
781	return count;
782	}	843	}
783		844
784	static void create_pipe ()	845	XS(boot_IO__AIO) ecb_cold;
785	{
786	if (pipe (respipe))
787	croak ("unable to initialize result pipe");
788		846
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}
795
796	/*****************************************************************************/
797	/* work around various missing functions */
798
799	#if !HAVE_PREADWRITE
800	# define pread aio_pread
801	# define pwrite aio_pwrite
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}
824
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974
975	if (res < 0
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
977	#if __solaris
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
979	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985
986	res = 0;
987
988	while (count)
989	{
990	ssize_t cnt;
991
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
993
994	if (cnt <= 0)
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999
1000	cnt = write (ofd, aio_buf, cnt);
1001
1002	if (cnt <= 0)
1003	{
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007
1008	offset += cnt;
1009	res += cnt;
1010	count -= cnt;
1011	}
1012	}
1013
1014	return res;
1015	}
1016
1017	/* read a full directory */
1018	static void scandir_ (aio_req req, worker *self)
1019	{
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078
1079	/*****************************************************************************/
1080
1081	static void *aio_proc (void *thr_arg)
1082	{
1083	aio_req req;
1084	struct timespec ts;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}
1303
1304	#define dREQ \
1305	aio_req req; \
1306	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \
1308	\
1309	if (SvOK (callback) && !SvROK (callback)) \
1310	croak ("callback must be undef or of reference type"); \
1311	\
1312	Newz (0, req, 1, aio_cb); \
1313	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \
1315	\
1316	req->callback = newSVsv (callback); \
1317	req->pri = req_pri
1318
1319	#define REQ_SEND \
1320	req_send (req); \
1321	\
1322	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1324
1325	MODULE = IO::AIO PACKAGE = IO::AIO	847	MODULE = IO::AIO PACKAGE = IO::AIO
1326		848
1327	PROTOTYPES: ENABLE	849	PROTOTYPES: ENABLE
1328		850
1329	BOOT:	851	BOOT:
1330	{	852	{
		853	static const struct {
		854	const char *name;
		855	IV iv;
		856	} *civ, const_iv[] = {
		857	# define const_niv(name, value) { # name, (IV) value },
		858	# define const_iv(name) { # name, (IV) name },
		859	# define const_eio(name) { # name, (IV) EIO_ ## name },
		860
		861	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		862
		863	const_iv (ENOSYS)
		864	const_iv (EXDEV)
		865	const_iv (EBADR)
		866
		867	const_iv (O_RDONLY)
		868	const_iv (O_WRONLY)
		869	const_iv (O_RDWR)
		870	const_iv (O_CREAT)
		871	const_iv (O_TRUNC)
		872	const_iv (O_EXCL)
		873	const_iv (O_APPEND)
		874
		875	const_iv (O_ASYNC)
		876	const_iv (O_DIRECT)
		877	const_iv (O_NOATIME)
		878
		879	const_iv (O_CLOEXEC)
		880	const_iv (O_NOCTTY)
		881	const_iv (O_NOFOLLOW)
		882	const_iv (O_NONBLOCK)
		883	const_iv (O_EXEC)
		884	const_iv (O_SEARCH)
		885	const_iv (O_DIRECTORY)
		886	const_iv (O_DSYNC)
		887	const_iv (O_RSYNC)
		888	const_iv (O_SYNC)
		889	const_iv (O_TTY_INIT)
		890
		891	const_iv (S_IFIFO)
		892	const_iv (S_IFCHR)
		893	const_iv (S_IFBLK)
		894	const_iv (S_IFLNK)
		895	const_iv (S_IFREG)
		896	const_iv (S_IFDIR)
		897	const_iv (S_IFWHT)
		898	const_iv (S_IFSOCK)
		899	const_iv (S_IFMT)
		900
		901	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		902	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		903	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		904	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		905	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		906	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		907
		908	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		909	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		910	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		911	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		912	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		913
		914	const_iv (ST_RDONLY)
		915	const_iv (ST_NOSUID)
		916	const_iv (ST_NODEV)
		917	const_iv (ST_NOEXEC)
		918	const_iv (ST_SYNCHRONOUS)
		919	const_iv (ST_MANDLOCK)
		920	const_iv (ST_WRITE)
		921	const_iv (ST_APPEND)
		922	const_iv (ST_IMMUTABLE)
		923	const_iv (ST_NOATIME)
		924	const_iv (ST_NODIRATIME)
		925	const_iv (ST_RELATIME)
		926
		927	const_iv (PROT_NONE)
		928	const_iv (PROT_EXEC)
		929	const_iv (PROT_READ)
		930	const_iv (PROT_WRITE)
		931
		932	/*const_iv (MAP_FIXED)*/
		933	const_iv (MAP_PRIVATE)
		934	const_iv (MAP_SHARED)
		935	const_iv (MAP_ANONYMOUS)
		936
		937	/* linuxish */
		938	const_iv (MAP_HUGETLB)
		939	const_iv (MAP_LOCKED)
		940	const_iv (MAP_NORESERVE)
		941	const_iv (MAP_POPULATE)
		942	const_iv (MAP_NONBLOCK)
		943
		944	const_iv (FIEMAP_FLAG_SYNC)
		945	const_iv (FIEMAP_FLAG_XATTR)
		946	const_iv (FIEMAP_FLAGS_COMPAT)
		947	const_iv (FIEMAP_EXTENT_LAST)
		948	const_iv (FIEMAP_EXTENT_UNKNOWN)
		949	const_iv (FIEMAP_EXTENT_DELALLOC)
		950	const_iv (FIEMAP_EXTENT_ENCODED)
		951	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		952	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		953	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		954	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		955	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		956	const_iv (FIEMAP_EXTENT_MERGED)
		957	const_iv (FIEMAP_EXTENT_SHARED)
		958
		959	const_eio (SEEK_SET)
		960	const_eio (SEEK_CUR)
		961	const_eio (SEEK_END)
		962
		963	const_eio (MCL_FUTURE)
		964	const_eio (MCL_CURRENT)
		965
		966	const_eio (MS_ASYNC)
		967	const_eio (MS_INVALIDATE)
		968	const_eio (MS_SYNC)
		969
		970	const_eio (MT_MODIFY)
		971
		972	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		973	const_eio (SYNC_FILE_RANGE_WRITE)
		974	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		975
		976	const_eio (FALLOC_FL_KEEP_SIZE)
		977
		978	const_eio (READDIR_DENTS)
		979	const_eio (READDIR_DIRS_FIRST)
		980	const_eio (READDIR_STAT_ORDER)
		981	const_eio (READDIR_FOUND_UNKNOWN)
		982
		983	const_eio (DT_UNKNOWN)
		984	const_eio (DT_FIFO)
		985	const_eio (DT_CHR)
		986	const_eio (DT_DIR)
		987	const_eio (DT_BLK)
		988	const_eio (DT_REG)
		989	const_eio (DT_LNK)
		990	const_eio (DT_SOCK)
		991	const_eio (DT_WHT)
		992	};
		993
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	994	aio_stash = gv_stashpv ("IO::AIO" , 1);
		995	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		996	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		997	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1332		998
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	999	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1000	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		1001
1341	create_pipe ();	1002	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1343	}
1344		1003
		1004	reinit ();
		1005	}
		1006
1345	void	1007	void
		1008	reinit ()
		1009	PROTOTYPE:
		1010
		1011	void
1346	max_poll_reqs (int nreqs)	1012	max_poll_reqs (unsigned int nreqs)
1347	PROTOTYPE: $	1013	PROTOTYPE: $
1348	CODE:	1014	CODE:
1349	max_poll_reqs = nreqs;	1015	eio_set_max_poll_reqs (nreqs);
1350		1016
1351	void	1017	void
1352	max_poll_time (double nseconds)	1018	max_poll_time (double nseconds)
1353	PROTOTYPE: $	1019	PROTOTYPE: $
1354	CODE:	1020	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	1021	eio_set_max_poll_time (nseconds);
1356		1022
1357	void	1023	void
1358	min_parallel (int nthreads)	1024	min_parallel (unsigned int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_parallel (int nthreads)
1363	PROTOTYPE: $
1364
1365	void
1366	max_idle (int nthreads)
1367	PROTOTYPE: $	1025	PROTOTYPE: $
1368	CODE:	1026	CODE:
1369	set_max_idle (nthreads);	1027	eio_set_min_parallel (nthreads);
1370		1028
1371	int	1029	void
1372	max_outstanding (int maxreqs)	1030	max_parallel (unsigned int nthreads)
1373	PROTOTYPE: $	1031	PROTOTYPE: $
1374	CODE:	1032	CODE:
1375	RETVAL = max_outstanding;	1033	eio_set_max_parallel (nthreads);
		1034
		1035	void
		1036	max_idle (unsigned int nthreads)
		1037	PROTOTYPE: $
		1038	CODE:
		1039	eio_set_max_idle (nthreads);
		1040
		1041	void
		1042	idle_timeout (unsigned int seconds)
		1043	PROTOTYPE: $
		1044	CODE:
		1045	eio_set_idle_timeout (seconds);
		1046
		1047	void
		1048	max_outstanding (unsigned int maxreqs)
		1049	PROTOTYPE: $
		1050	CODE:
1376	max_outstanding = maxreqs;	1051	max_outstanding = maxreqs;
1377	OUTPUT:	1052
1378	RETVAL	1053	void
		1054	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
		1055	PPCODE:
		1056	{
		1057	dREQ;
		1058
		1059	req->type = EIO_WD_OPEN;
		1060	req_set_path1 (req, pathname);
		1061
		1062	REQ_SEND;
		1063	}
1379		1064
1380	void	1065	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1066	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1382	PROTOTYPE: $$$;$
1383	PPCODE:	1067	PPCODE:
1384	{	1068	{
1385	dREQ;	1069	dREQ;
1386		1070
1387	req->type = REQ_OPEN;	1071	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	1072	req_set_path1 (req, pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	1073	req->int1 = flags;
1391	req->mode = mode;	1074	req->int2 = mode;
1392		1075
1393	REQ_SEND;	1076	REQ_SEND;
1394	}	1077	}
1395		1078
1396	void	1079	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1080	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	PROTOTYPE: $;$
1399	ALIAS:	1081	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	1082	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	1083	aio_fdatasync = EIO_FDATASYNC
		1084	aio_syncfs = EIO_SYNCFS
1403	PPCODE:	1085	PPCODE:
1404	{	1086	{
		1087	int fd = s_fileno_croak (fh, 0);
1405	dREQ;	1088	dREQ;
1406		1089
1407	req->type = ix;	1090	req->type = ix;
1408	req->sv1 = newSVsv (fh);	1091	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1092	req->int1 = fd;
1410		1093
1411	REQ_SEND (req);	1094	REQ_SEND;
1412	}	1095	}
1413		1096
1414	void	1097	void
		1098	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1099	PPCODE:
		1100	{
		1101	int fd = s_fileno_croak (fh, 0);
		1102	dREQ;
		1103
		1104	req->type = EIO_SYNC_FILE_RANGE;
		1105	req->sv1 = newSVsv (fh);
		1106	req->int1 = fd;
		1107	req->offs = offset;
		1108	req->size = nbytes;
		1109	req->int2 = flags;
		1110
		1111	REQ_SEND;
		1112	}
		1113
		1114	void
		1115	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1116	PPCODE:
		1117	{
		1118	int fd = s_fileno_croak (fh, 0);
		1119	dREQ;
		1120
		1121	req->type = EIO_FALLOCATE;
		1122	req->sv1 = newSVsv (fh);
		1123	req->int1 = fd;
		1124	req->int2 = mode;
		1125	req->offs = offset;
		1126	req->size = len;
		1127
		1128	REQ_SEND;
		1129	}
		1130
		1131	void
		1132	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1133	PPCODE:
		1134	{
		1135	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1136	int fd = s_fileno_croak (fh, 0);
		1137	dREQ;
		1138
		1139	if (expect_false (close_fd < 0))
		1140	{
		1141	int pipefd [2];
		1142
		1143	if (
		1144	#ifdef _WIN32
		1145	_pipe (pipefd, 1, _O_BINARY) < 0
		1146	#else
		1147	pipe (pipefd) < 0
		1148	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1149	#endif
		1150	|| close (pipefd [1]) < 0
		1151	)
		1152	abort (); /*D*/
		1153
		1154	close_fd = pipefd [0];
		1155	}
		1156
		1157	req->type = EIO_DUP2;
		1158	req->int1 = close_fd;
		1159	req->sv2 = newSVsv (fh);
		1160	req->int2 = fd;
		1161
		1162	REQ_SEND;
		1163	}
		1164
		1165	void
		1166	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1167	PPCODE:
		1168	{
		1169	STRLEN svlen;
		1170	int fd = s_fileno_croak (fh, 0);
		1171	dREQ;
		1172
		1173	req->type = EIO_SEEK;
		1174	req->sv1 = newSVsv (fh);
		1175	req->int1 = fd;
		1176	req->offs = SvVAL64 (offset);
		1177	req->int2 = whence;
		1178
		1179	REQ_SEND;
		1180	}
		1181
		1182	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	1183	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1416	ALIAS:	1184	ALIAS:
1417	aio_read = REQ_READ	1185	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	1186	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$
1420	PPCODE:	1187	PPCODE:
1421	{	1188	{
1422	STRLEN svlen;	1189	STRLEN svlen;
		1190	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	1191	char *svptr = SvPVbyte (data, svlen);
1424		1192	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		1193
1428	if (dataoffset < 0)	1194	if (dataoffset < 0)
1429	dataoffset += svlen;	1195	dataoffset += svlen;
1430		1196
1431	if (dataoffset < 0 || dataoffset > svlen)	1197	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	1198	croak ("dataoffset outside of data scalar");
1433		1199
1434	if (ix == REQ_WRITE)	1200	if (ix == EIO_WRITE)
1435	{	1201	{
1436	/* write: check length and adjust. */	1202	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	1203	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	1204	len = svlen - dataoffset;
1439	}	1205	}
1440	else	1206	else
1441	{	1207	{
1442	/* read: grow scalar as necessary */	1208	/* read: check type and grow scalar as necessary */
		1209	SvUPGRADE (data, SVt_PV);
1443	svptr = SvGROW (data, length + dataoffset + 1);	1210	svptr = SvGROW (data, len + dataoffset + 1);
1444	}	1211	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		1212
1449	{	1213	{
1450	dREQ;	1214	dREQ;
1451		1215
1452	req->type = ix;	1216	req->type = ix;
1453	req->sv1 = newSVsv (fh);	1217	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1218	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	1219	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	1220	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	1221	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	1222	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	1223	req->stroffset = dataoffset;
1461		1224
1462	if (!SvREADONLY (data))	1225	if (!SvREADONLY (data))
1463	{	1226	{
1464	SvREADONLY_on (data);	1227	SvREADONLY_on (data);
1465	req->flags |= FLAG_SV1_RO_OFF;	1228	req->flags |= FLAG_SV2_RO_OFF;
1466	}	1229	}
1467		1230
1468	REQ_SEND;	1231	REQ_SEND;
1469	}	1232	}
1470	}	1233	}
1471		1234
1472	void	1235	void
1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1236	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1474	PROTOTYPE: $$;$	1237	ALIAS:
		1238	aio_readlink = EIO_READLINK
		1239	aio_realpath = EIO_REALPATH
1475	PPCODE:	1240	PPCODE:
1476	{	1241	{
1477	SV *data;
1478	dREQ;	1242	dREQ;
1479		1243
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	1244	req->type = ix;
1484	req->sv1 = newSVsv (path);	1245	req_set_path1 (req, pathname);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		1246
1489	REQ_SEND;	1247	REQ_SEND;
1490	}	1248	}
1491		1249
1492	void	1250	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	1251	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$
1495	PPCODE:	1252	PPCODE:
1496	{	1253	{
		1254	int ifd = s_fileno_croak (in_fh , 0);
		1255	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	1256	dREQ;
1498		1257
1499	req->type = REQ_SENDFILE;	1258	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	1259	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1260	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	1261	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1262	req->int2 = ifd;
1504	req->offs = in_offset;	1263	req->offs = in_offset;
1505	req->size = length;	1264	req->size = length;
1506		1265
1507	REQ_SEND;	1266	REQ_SEND;
1508	}	1267	}
1509		1268
1510	void	1269	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	1270	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1512	PROTOTYPE: $$$;$
1513	PPCODE:	1271	PPCODE:
1514	{	1272	{
		1273	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	1274	dREQ;
1516		1275
1517	req->type = REQ_READAHEAD;	1276	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	1277	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1278	req->int1 = fd;
1520	req->offs = offset;	1279	req->offs = offset;
1521	req->size = length;	1280	req->size = length;
1522		1281
1523	REQ_SEND;	1282	REQ_SEND;
1524	}	1283	}
1525		1284
1526	void	1285	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1286	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1528	ALIAS:	1287	ALIAS:
1529	aio_stat = REQ_STAT	1288	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1289	aio_lstat = EIO_LSTAT
		1290	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1291	PPCODE:
1532	{	1292	{
1533	dREQ;	1293	dREQ;
1534		1294
1535	req->ptr2 = malloc (sizeof (Stat_t));	1295	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);
1544
1545	if (SvPOK (fh_or_path))
1546	{
1547	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}
1550	else
1551	{
1552	req->type = REQ_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}
1555		1296
1556	REQ_SEND;	1297	REQ_SEND;
1557	}	1298	}
		1299
		1300	UV
		1301	major (UV dev)
		1302	ALIAS:
		1303	minor = 1
		1304	CODE:
		1305	RETVAL = ix ? major (dev) : minor (dev);
		1306	OUTPUT:
		1307	RETVAL
		1308
		1309	UV
		1310	makedev (UV maj, UV min)
		1311	CODE:
		1312	RETVAL = makedev (maj, min);
		1313	OUTPUT:
		1314	RETVAL
1558		1315
1559	void	1316	void
1560	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1317	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1561	PPCODE:	1318	PPCODE:
1562	{	1319	{
1563	dREQ;	1320	dREQ;
1564		1321
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1322	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1323	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1324	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1568		1325
1569	if (SvPOK (fh_or_path))	1326	REQ_SEND;
1570	{	1327	}
1571	req->type = REQ_UTIME;	1328
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1329	void
1573	}	1330	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1574	else	1331	PPCODE:
1575	{	1332	{
1576	req->type = REQ_FUTIME;	1333	dREQ;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1334
1578	}	1335	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1336	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1579		1337
1580	REQ_SEND;	1338	REQ_SEND;
1581	}	1339	}
1582		1340
1583	void	1341	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1342	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
1585	PPCODE:	1343	PPCODE:
1586	{	1344	{
1587	dREQ;	1345	dREQ;
1588		1346
1589	req->mode = mode;	1347	req->int2 = mode;
1590	req->sv1 = newSVsv (fh_or_path);	1348	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1591
1592	if (SvPOK (fh_or_path))
1593	{
1594	req->type = REQ_CHMOD;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}
1597	else
1598	{
1599	req->type = REQ_FCHMOD;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}
1602		1349
1603	REQ_SEND;	1350	REQ_SEND;
1604	}	1351	}
1605		1352
1606	void	1353	void
…		…
1609	{	1356	{
1610	dREQ;	1357	dREQ;
1611		1358
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1359	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1360	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1361	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1615		1362
1616	if (SvPOK (fh_or_path))	1363	REQ_SEND;
1617	{	1364	}
1618	req->type = REQ_CHOWN;	1365
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);	1366	void
1620	}	1367	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
1621	else	1368	PPCODE:
1622	{	1369	{
1623	req->type = REQ_FCHOWN;	1370	dREQ;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1371
1625	}	1372	req->type = EIO_READDIR;
		1373	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1374
		1375	if (flags & EIO_READDIR_DENTS)
		1376	req->int1 |= EIO_READDIR_CUSTOM2;
		1377
		1378	req_set_path1 (req, pathname);
		1379
		1380	REQ_SEND;
		1381	}
		1382
		1383	void
		1384	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388
		1389	req->type = EIO_MKDIR;
		1390	req->int2 = mode;
		1391	req_set_path1 (req, pathname);
1626		1392
1627	REQ_SEND;	1393	REQ_SEND;
1628	}	1394	}
1629		1395
1630	void	1396	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1397	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1632	ALIAS:	1398	ALIAS:
1633	aio_unlink = REQ_UNLINK	1399	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1400	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1401	aio_readdir = EIO_READDIR
1636	PPCODE:	1402	PPCODE:
1637	{	1403	{
1638	dREQ;	1404	dREQ;
1639		1405
1640	req->type = ix;	1406	req->type = ix;
1641	req->sv1 = newSVsv (pathname);	1407	req_set_path1 (req, pathname);
1642	req->ptr1 = SvPVbyte_nolen (req->sv1);
1643
1644	REQ_SEND;
1645	}
1646
1647	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1649	PPCODE:
1650	{
1651	dREQ;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657		1408
1658	REQ_SEND;	1409	REQ_SEND;
1659	}	1410	}
1660		1411
1661	void	1412	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1413	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:	1414	ALIAS:
1664	aio_link = REQ_LINK	1415	aio_link = EIO_LINK
1665	aio_symlink = REQ_SYMLINK	1416	aio_symlink = EIO_SYMLINK
1666	aio_rename = REQ_RENAME	1417	aio_rename = EIO_RENAME
1667	PPCODE:	1418	PPCODE:
1668	{	1419	{
		1420	eio_wd wd2 = 0;
1669	dREQ;	1421	dREQ;
1670		1422
1671	req->type = ix;	1423	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);	1424	req_set_path1 (req, oldpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);	1425	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1674	req->sv1 = newSVsv (newpath);	1426	req->int3 = (long)wd2;
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1427
1677	REQ_SEND;	1428	REQ_SEND;
1678	}	1429	}
1679		1430
1680	void	1431	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1432	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1682	PPCODE:	1433	PPCODE:
1683	{	1434	{
1684	dREQ;	1435	dREQ;
1685		1436
1686	req->type = REQ_MKNOD;	1437	req->type = EIO_MKNOD;
1687	req->sv1 = newSVsv (pathname);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);
1689	req->mode = (mode_t)mode;	1438	req->int2 = (mode_t)mode;
1690	req->offs = dev;	1439	req->offs = dev;
		1440	req_set_path1 (req, pathname);
1691		1441
1692	REQ_SEND;	1442	REQ_SEND;
1693	}	1443	}
1694		1444
1695	void	1445	void
		1446	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1447	ALIAS:
		1448	aio_mtouch = EIO_MTOUCH
		1449	aio_msync = EIO_MSYNC
		1450	PPCODE:
		1451	{
		1452	STRLEN svlen;
		1453	char *svptr = SvPVbyte (data, svlen);
		1454	UV len = SvUV (length);
		1455
		1456	if (offset < 0)
		1457	offset += svlen;
		1458
		1459	if (offset < 0 || offset > svlen)
		1460	croak ("offset outside of scalar");
		1461
		1462	if (!SvOK (length) || len + offset > svlen)
		1463	len = svlen - offset;
		1464
		1465	{
		1466	dREQ;
		1467
		1468	req->type = ix;
		1469	req->sv2 = SvREFCNT_inc (data);
		1470	req->ptr2 = (char *)svptr + offset;
		1471	req->size = len;
		1472	req->int1 = flags;
		1473
		1474	REQ_SEND;
		1475	}
		1476	}
		1477
		1478	void
		1479	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1480	PPCODE:
		1481	{
		1482	STRLEN svlen;
		1483	char *svptr = SvPVbyte (data, svlen);
		1484	UV len = SvUV (length);
		1485
		1486	if (offset < 0)
		1487	offset += svlen;
		1488
		1489	if (offset < 0 || offset > svlen)
		1490	croak ("offset outside of scalar");
		1491
		1492	if (!SvOK (length) || len + offset > svlen)
		1493	len = svlen - offset;
		1494
		1495	{
		1496	dREQ;
		1497
		1498	req->type = EIO_MLOCK;
		1499	req->sv2 = SvREFCNT_inc (data);
		1500	req->ptr2 = (char *)svptr + offset;
		1501	req->size = len;
		1502
		1503	REQ_SEND;
		1504	}
		1505	}
		1506
		1507	void
		1508	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1509	PPCODE:
		1510	{
		1511	dREQ;
		1512
		1513	req->type = EIO_MLOCKALL;
		1514	req->int1 = flags;
		1515
		1516	REQ_SEND;
		1517	}
		1518
		1519	void
		1520	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1521	PPCODE:
		1522	{
		1523	int fd = s_fileno_croak (fh, 0);
		1524	dREQ;
		1525
		1526	req->type = EIO_CUSTOM;
		1527	req->sv1 = newSVsv (fh);
		1528	req->int1 = fd;
		1529
		1530	req->feed = fiemap;
		1531	/* keep our fingers crossed that the next two types are 64 bit */
		1532	req->offs = start;
		1533	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1534	req->int2 = flags;
		1535	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1536
		1537	REQ_SEND;
		1538	}
		1539
		1540	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1541	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:	1542	PPCODE:
1698	{	1543	{
1699	dREQ;	1544	dREQ;
1700		1545
1701	req->type = REQ_BUSY;	1546	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	1547	req->nv1 = delay < 0. ? 0. : delay;
1703		1548
1704	REQ_SEND;	1549	REQ_SEND;
1705	}	1550	}
1706		1551
1707	void	1552	void
1708	aio_group (SV *callback=&PL_sv_undef)	1553	aio_group (SV *callback=&PL_sv_undef)
1709	PROTOTYPE: ;$
1710	PPCODE:	1554	PPCODE:
1711	{	1555	{
1712	dREQ;	1556	dREQ;
1713		1557
1714	req->type = REQ_GROUP;	1558	req->type = EIO_GROUP;
1715		1559
1716	req_send (req);	1560	req_submit (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1561	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	1562	}
1719		1563
1720	void	1564	void
1721	aio_nop (SV *callback=&PL_sv_undef)	1565	aio_nop (SV *callback=&PL_sv_undef)
		1566	ALIAS:
		1567	aio_nop = EIO_NOP
		1568	aio_sync = EIO_SYNC
1722	PPCODE:	1569	PPCODE:
1723	{	1570	{
1724	dREQ;	1571	dREQ;
1725		1572
1726	req->type = REQ_NOP;	1573	req->type = ix;
1727		1574
1728	REQ_SEND;	1575	REQ_SEND;
1729	}	1576	}
1730		1577
1731	int	1578	int
1732	aioreq_pri (int pri = 0)	1579	aioreq_pri (int pri = 0)
1733	PROTOTYPE: ;$
1734	CODE:	1580	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	1581	RETVAL = next_pri;
1736	if (items > 0)	1582	if (items > 0)
1737	{	1583	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	1584	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	1585	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	1586	next_pri = pri;
1741	}	1587	}
1742	OUTPUT:	1588	OUTPUT:
1743	RETVAL	1589	RETVAL
1744		1590
1745	void	1591	void
1746	aioreq_nice (int nice = 0)	1592	aioreq_nice (int nice = 0)
1747	CODE:	1593	CODE:
1748	nice = next_pri - nice;	1594	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	1595	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	1596	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	1597	next_pri = nice;
1752		1598
1753	void	1599	void
1754	flush ()	1600	flush ()
1755	PROTOTYPE:
1756	CODE:	1601	CODE:
1757	while (nreqs)	1602	while (eio_nreqs ())
1758	{	1603	{
1759	poll_wait ();	1604	poll_wait ();
1760	poll_cb ();	1605	poll_cb ();
1761	}	1606	}
1762		1607
1763	int	1608	int
1764	poll()	1609	poll ()
1765	PROTOTYPE:
1766	CODE:	1610	CODE:
1767	poll_wait ();	1611	poll_wait ();
1768	RETVAL = poll_cb ();	1612	RETVAL = poll_cb ();
1769	OUTPUT:	1613	OUTPUT:
1770	RETVAL	1614	RETVAL
1771		1615
1772	int	1616	int
1773	poll_fileno()	1617	poll_fileno ()
1774	PROTOTYPE:
1775	CODE:	1618	CODE:
1776	RETVAL = respipe [0];	1619	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	1620	OUTPUT:
1778	RETVAL	1621	RETVAL
1779		1622
1780	int	1623	int
1781	poll_cb(...)	1624	poll_cb (...)
1782	PROTOTYPE:	1625	PROTOTYPE:
1783	CODE:	1626	CODE:
1784	RETVAL = poll_cb ();	1627	RETVAL = poll_cb ();
1785	OUTPUT:	1628	OUTPUT:
1786	RETVAL	1629	RETVAL
1787		1630
1788	void	1631	void
1789	poll_wait()	1632	poll_wait ()
1790	PROTOTYPE:
1791	CODE:	1633	CODE:
1792	poll_wait ();	1634	poll_wait ();
1793		1635
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	1636	int
1832	nreqs()	1637	nreqs ()
1833	PROTOTYPE:
1834	CODE:	1638	CODE:
1835	RETVAL = nreqs;	1639	RETVAL = eio_nreqs ();
1836	OUTPUT:	1640	OUTPUT:
1837	RETVAL	1641	RETVAL
1838		1642
1839	int	1643	int
1840	nready()	1644	nready ()
1841	PROTOTYPE:
1842	CODE:	1645	CODE:
1843	RETVAL = get_nready ();	1646	RETVAL = eio_nready ();
1844	OUTPUT:	1647	OUTPUT:
1845	RETVAL	1648	RETVAL
1846		1649
1847	int	1650	int
1848	npending()	1651	npending ()
1849	PROTOTYPE:
1850	CODE:	1652	CODE:
1851	RETVAL = get_npending ();	1653	RETVAL = eio_npending ();
1852	OUTPUT:	1654	OUTPUT:
1853	RETVAL	1655	RETVAL
1854		1656
1855	int	1657	int
1856	nthreads()	1658	nthreads ()
1857	PROTOTYPE:
1858	CODE:	1659	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1660	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1661	OUTPUT:
1863	RETVAL	1662	RETVAL
1864		1663
		1664	int
		1665	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1666	CODE:
		1667	RETVAL = posix_fadvise (fh, offset, length, advice);
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	IV
		1672	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1673	CODE:
		1674	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1675	OUTPUT:
		1676	RETVAL
		1677
		1678	void
		1679	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1680	PPCODE:
		1681	sv_unmagic (scalar, MMAP_MAGIC);
		1682	{
		1683	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1684	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1685	if (addr == (void *)-1)
		1686	XSRETURN_NO;
		1687
		1688	sv_force_normal (scalar);
		1689
		1690	/* we store the length in mg_obj, as namlen is I32 :/ */
		1691	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1692	->mg_obj = (SV *)length;
		1693
		1694	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1695
		1696	if (!(prot & PROT_WRITE))
		1697	SvREADONLY_on (scalar);
		1698
		1699	if (SvLEN (scalar))
		1700	Safefree (SvPVX (scalar));
		1701
		1702	SvPVX (scalar) = (char *)addr;
		1703	SvCUR_set (scalar, length);
		1704	SvLEN_set (scalar, 0);
		1705	SvPOK_only (scalar);
		1706
		1707	XSRETURN_YES;
		1708	}
		1709
		1710	void
		1711	munmap (SV *scalar)
		1712	CODE:
		1713	sv_unmagic (scalar, MMAP_MAGIC);
		1714
		1715	int
		1716	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1717	ALIAS:
		1718	mprotect = 1
		1719	CODE:
		1720	{
		1721	STRLEN svlen;
		1722	void *addr = SvPVbyte (scalar, svlen);
		1723	size_t len = SvUV (length);
		1724
		1725	if (offset < 0)
		1726	offset += svlen;
		1727
		1728	if (offset < 0 || offset > svlen)
		1729	croak ("offset outside of scalar");
		1730
		1731	if (!SvOK (length) || len + offset > svlen)
		1732	len = svlen - offset;
		1733
		1734	addr = (void *)(((intptr_t)addr) + offset);
		1735	eio_page_align (&addr, &len);
		1736
		1737	switch (ix)
		1738	{
		1739	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1740	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1741	}
		1742	}
		1743	OUTPUT:
		1744	RETVAL
		1745
		1746	int
		1747	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1748	CODE:
		1749	{
		1750	STRLEN svlen;
		1751	void *addr = SvPVbyte (scalar, svlen);
		1752	size_t len = SvUV (length);
		1753
		1754	if (offset < 0)
		1755	offset += svlen;
		1756
		1757	if (offset < 0 || offset > svlen)
		1758	croak ("offset outside of scalar");
		1759
		1760	if (!SvOK (length) || len + offset > svlen)
		1761	len = svlen - offset;
		1762
		1763	addr = (void *)(((intptr_t)addr) + offset);
		1764	eio_page_align (&addr, &len);
		1765	#if _POSIX_MEMLOCK_RANGE
		1766	RETVAL = munlock (addr, len);
		1767	#else
		1768	RETVAL = ((errno = ENOSYS), -1);
		1769	#endif
		1770	}
		1771	OUTPUT:
		1772	RETVAL
		1773
		1774	int
		1775	munlockall ()
		1776	CODE:
		1777	#if _POSIX_MEMLOCK
		1778	munlockall ();
		1779	#else
		1780	RETVAL = -1;
		1781	errno = ENOSYS;
		1782	#endif
		1783	OUTPUT:
		1784	RETVAL
		1785
		1786	void _on_next_submit (SV *cb)
		1787	CODE:
		1788	SvREFCNT_dec (on_next_submit);
		1789	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1790
1865	PROTOTYPES: DISABLE	1791	PROTOTYPES: DISABLE
		1792
		1793	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1794
		1795	BOOT:
		1796	{
		1797	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1798	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1799	}
		1800
		1801	void
		1802	DESTROY (SV *self)
		1803	CODE:
		1804	{
		1805	aio_wd wd = SvAIO_WD (self);
		1806	#if HAVE_AT
		1807	{
		1808	SV *callback = &PL_sv_undef;
		1809	dREQ; /* clobbers next_pri :/ */
		1810	next_pri = req->pri; /* restore next_pri */
		1811	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1812	req->type = EIO_WD_CLOSE;
		1813	req->wd = wd;
		1814	REQ_SEND;
		1815	}
		1816	#else
		1817	eio_wd_close_sync (wd);
		1818	#endif
		1819	}
1866		1820
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1821	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		1822
1869	void	1823	void
1870	cancel (aio_req_ornot req)	1824	cancel (aio_req_ornot req)
1871	CODE:	1825	CODE:
1872	req_cancel (req);	1826	eio_cancel (req);
1873		1827
1874	void	1828	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1829	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1876	CODE:	1830	PPCODE:
		1831	{
		1832	if (GIMME_V != G_VOID)
		1833	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1834
		1835	if (items > 1)
		1836	{
		1837	SV *cb_cv =get_cb (callback);
		1838
1877	SvREFCNT_dec (req->callback);	1839	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	1840	req->callback = SvREFCNT_inc (cb_cv);
		1841	}
		1842	}
1879		1843
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1844	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		1845
1882	void	1846	void
1883	add (aio_req grp, ...)	1847	add (aio_req grp, ...)
1884	PPCODE:	1848	PPCODE:
1885	{	1849	{
1886	int i;	1850	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		1851
1892	if (grp->int1 == 2)	1852	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1853	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		1854
1895	for (i = 1; i < items; ++i )	1855	for (i = 1; i < items; ++i )
1896	{	1856	{
		1857	aio_req req;
		1858
1897	if (GIMME_V != G_VOID)	1859	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1860	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		1861
1900	req = SvAIO_REQ (ST (i));	1862	req = SvAIO_REQ (ST (i));
1901		1863
1902	if (req)	1864	if (req)
1903	{	1865	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	1866	}
1916	}	1867	}
1917		1868
1918	void	1869	void
1919	cancel_subs (aio_req_ornot req)	1870	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	1879	AV *av;
1929		1880
1930	grp->errorno = errno;	1881	grp->errorno = errno;
1931		1882
1932	av = newAV ();	1883	av = newAV ();
		1884	av_extend (av, items - 1);
1933		1885
1934	for (i = 1; i < items; ++i )	1886	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	1887	av_push (av, newSVsv (ST (i)));
1936		1888
1937	SvREFCNT_dec (grp->sv1);	1889	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	1896	grp->errorno = errorno;
1945		1897
1946	void	1898	void
1947	limit (aio_req grp, int limit)	1899	limit (aio_req grp, int limit)
1948	CODE:	1900	CODE:
1949	grp->int2 = limit;	1901	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		1902
1952	void	1903	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	1904	feed (aio_req grp, SV *callback=&PL_sv_undef)
1954	CODE:	1905	CODE:
1955	{	1906	{
1956	SvREFCNT_dec (grp->sv2);	1907	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	1908	grp->sv2 = newSVsv (callback);
		1909	grp->feed = aio_grp_feed;
1958		1910
1959	if (grp->int2 <= 0)	1911	if (grp->int2 <= 0)
1960	grp->int2 = 2;	1912	grp->int2 = 2;
1961		1913
1962	aio_grp_feed (grp);	1914	eio_grp_limit (grp, grp->int2);
1963	}	1915	}
1964		1916

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