ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.92 by root, Wed Nov 8 01:59:59 2006 UTC vs.
Revision 1.219 by root, Fri Jul 27 18:43:25 2012 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
		21	# include <sys/mman.h>
		22	#endif
		23
34	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/types.h>
		28	# include <linux/fiemap.h>
		29	# define HAVE_FIEMAP 1
		30	# endif
		31	#endif
		32
		33	/* perl namespace pollution */
		34	#undef VERSION
		35
		36	/* perl stupidly overrides readdir and maybe others */
		37	/* with thread-unsafe versions, imagine that :( */
		38	#undef readdir
		39	#undef opendir
		40	#undef closedir
		41
		42	#ifdef _WIN32
		43
		44	// perl overrides all those nice libc functions
		45
		46	#undef malloc
		47	#undef free
		48	#undef open
		49	#undef read
		50	#undef write
		51	#undef send
		52	#undef recv
		53	#undef stat
		54	#undef lstat
		55	#undef fstat
		56	#undef truncate
		57	#undef ftruncate
		58	#undef open
		59	#undef link
		60	#undef close
		61	#undef unlink
		62	#undef mkdir
		63	#undef rmdir
		64	#undef rename
		65	#undef lseek
		66	#undef opendir
		67	#undef readdir
		68	#undef closedir
		69	#undef chmod
		70	#undef fchmod
		71	#undef dup
		72	#undef dup2
		73	#undef abort
		74	#undef pipe
		75
		76	#define EIO_STRUCT_STAT struct _stati64
		77	#define EIO_STRUCT_STATI64
		78
		79	#else
		80
		81	#include <sys/time.h>
35	# include <sys/sendfile.h>	82	#include <sys/select.h>
36	# elif __freebsd	83	#include <unistd.h>
37	# include <sys/socket.h>	84	#include <utime.h>
38	# include <sys/uio.h>	85	#include <signal.h>
39	# elif __hpux	86
40	# include <sys/socket.h>	87	#define EIO_STRUCT_STAT Stat_t
41	# elif __solaris /* not yet */	88
42	# include <sys/sendfile.h>	89	#endif
		90
		91	/*****************************************************************************/
		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	SV *sv3, *sv4; \
		114	STRLEN stroffset; \
		115	SV *self;
		116
		117	#define EIO_NO_WRAPPERS 1
		118
		119	#include "libeio/config.h"
		120	#include "libeio/eio.h"
		121
		122	static int req_invoke (eio_req *req);
		123	#define EIO_FINISH(req) req_invoke (req)
		124	static void req_destroy (eio_req *grp);
		125	#define EIO_DESTROY(req) req_destroy (req)
		126
		127	#include "libeio/eio.c"
		128
		129	#if !HAVE_POSIX_FADVISE
		130	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		131	#endif
		132
		133	#if !HAVE_POSIX_MADVISE
		134	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		135	#endif
		136
		137	#ifndef MAP_ANONYMOUS
		138	# ifdef MAP_ANON
		139	# define MAP_ANONYMOUS MAP_ANON
43	# else	140	# else
44	# error sendfile support requested but not available	141	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
45	# endif	142	# endif
46	#endif	143	#endif
47		144
48	/* number of seconds after which idle threads exit */	145	/* defines all sorts of constants to 0 unless they are already defined */
49	#define IDLE_TIMEOUT 10	146	#include "def0.h"
50		147
51	/* used for struct dirent, AIX doesn't provide it */	148	#ifndef makedev
52	#ifndef NAME_MAX	149	# define makedev(maj,min) (((maj) << 8) | (min))
53	# define NAME_MAX 4096
54	#endif	150	#endif
55		151	#ifndef major
56	#ifndef PTHREAD_STACK_MIN	152	# define major(dev) ((dev) >> 8)
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif	153	#endif
		154	#ifndef minor
		155	# define minor(dev) ((dev) & 0xff)
		156	#endif
60		157
61	#if __ia64	158	#ifndef PAGESIZE
62	# define STACKSIZE 65536	159	# define PAGESIZE sysconf (_SC_PAGESIZE)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	160	#endif
64	# define STACKSIZE PTHREAD_STACK_MIN	161
		162	/*****************************************************************************/
		163
		164	static void
		165	fiemap (eio_req *req)
		166	{
		167	req->result = -1;
		168
		169	#if HAVE_FIEMAP
		170	int count = req->int3;
		171
		172	/* heuristic: first try with 72 extents if we don't know how many, */
		173	/* as most files have (hopefully) fewer than this many extents */
		174	/* in fact, most should have <= 2, so the 72 below is probably overkill */
		175	if (count < 0)
		176	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
		177
		178	for (;;)
		179	{
		180	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		181	errno = ENOMEM;
		182	if (!fiemap)
		183	return;
		184
		185	req->ptr1 = fiemap;
		186	req->flags |= EIO_FLAG_PTR1_FREE;
		187
		188	fiemap->fm_start = req->offs;
		189	fiemap->fm_length = req->size;
		190	fiemap->fm_flags = req->int2;
		191	fiemap->fm_extent_count = count;
		192
		193	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		194	return;
		195
		196	if (req->int3 >= 0)
		197	break; /* when not autosizing we are done */
		198
		199	if (fiemap->fm_mapped_extents < count)
		200	/* either autosizing succeeded,
		201	* or the file had no extents
		202	* or we luckily had enough space */
		203	break;
		204
		205	/* some kernels overwrite fm_length, so just reset everything */
		206	fiemap->fm_start = req->offs;
		207	fiemap->fm_length = req->size;
		208	fiemap->fm_flags = req->int2;
		209	fiemap->fm_extent_count = 0;
		210
		211	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		212	return;
		213
		214	/* to work around a kernel bug, we allocate one more */
		215	count = fiemap->fm_mapped_extents + 1;
		216
		217	free (fiemap);
		218	}
		219
		220	req->result = 0;
		221
65	#else	222	#else
66	# define STACKSIZE 16384	223	errno = ENOSYS;
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif	224	#endif
79	#endif	225	}
80		226
81	/* buffer size for various temporary buffers */	227	/*****************************************************************************/
82	#define AIO_BUFSIZE 65536
83
84	#define dBUF \
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	typedef SV SV8; /* byte-sv, used for argument-checking */
93		228
94	enum {	229	enum {
95	REQ_QUIT,	230	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
96	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
98	REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100	REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,
106	};	231	};
107		232
108	#define AIO_REQ_KLASS "IO::AIO::REQ"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"
110
111	typedef struct aio_cb
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;
116	SV *sv1, *sv2;
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;
123	int type;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127
128	unsigned char flags;
129	unsigned char pri;
130
131	SV *self; /* the perl counterpart of this request, if any */
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
133	} aio_cb;
134
135	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};
140
141	typedef aio_cb *aio_req;	233	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	234	typedef eio_req *aio_req_ornot;
		235	typedef eio_wd aio_wd;
143		236
144	enum {	237	static SV *on_next_submit;
145	PRI_MIN = -4,	238	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	239	static int max_outstanding;
147		240
148	DEFAULT_PRI = 0,	241	static s_epipe respipe;
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152		242
153	#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155	static unsigned int max_poll_time = 0;
156	static unsigned int max_poll_reqs = 0;
157
158	/* calculcate time difference in ~1/AIO_TICKS of a second */
159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181	typedef struct worker {
182	/* locked by wrklock */
183	struct worker *prev, *next;
184
185	pthread_t tid;
186
187	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */
189	void *dbuf;
190	DIR *dirp;
191	} worker;
192
193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195	static void worker_clear (worker *wrk)
196	{
197	if (wrk->dirp)
198	{
199	closedir (wrk->dirp);
200	wrk->dirp = 0;
201	}
202
203	if (wrk->dbuf)
204	{
205	free (wrk->dbuf);
206	wrk->dbuf = 0;
207	}
208	}
209
210	static void worker_free (worker *wrk)
211	{
212	wrk->next->prev = wrk->prev;
213	wrk->prev->next = wrk->next;
214
215	free (wrk);
216	}
217
218	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];
222
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227	#if WORDACCESS_UNSAFE
228
229	static unsigned int get_nready ()
230	{
231	unsigned int retval;
232
233	LOCK (reqlock);
234	retval = nready;
235	UNLOCK (reqlock);
236
237	return retval;
238	}
239
240	static unsigned int get_npending ()
241	{
242	unsigned int retval;
243
244	LOCK (reslock);
245	retval = npending;
246	UNLOCK (reslock);
247
248	return retval;
249	}
250
251	static unsigned int get_nthreads ()
252	{
253	unsigned int retval;
254
255	LOCK (wrklock);
256	retval = started;
257	UNLOCK (wrklock);
258
259	return retval;
260	}
261
262	#else
263
264	# define get_nready() nready
265	# define get_npending() npending
266	# define get_nthreads() started
267
268	#endif
269
270	/*
271	* a somewhat faster data structure might be nice, but
272	* with 8 priorities this actually needs <20 insns
273	* per shift, the most expensive operation.
274	*/
275	typedef struct {
276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277	int size;
278	} reqq;
279
280	static reqq req_queue;
281	static reqq res_queue;
282
283	int reqq_push (reqq *q, aio_req req)
284	{
285	int pri = req->pri;
286	req->next = 0;
287
288	if (q->qe[pri])
289	{
290	q->qe[pri]->next = req;
291	q->qe[pri] = req;
292	}
293	else
294	q->qe[pri] = q->qs[pri] = req;
295
296	return q->size++;
297	}
298
299	aio_req reqq_shift (reqq *q)
300	{
301	int pri;
302
303	if (!q->size)
304	return 0;
305
306	--q->size;
307
308	for (pri = NUM_PRI; pri--; )
309	{
310	aio_req req = q->qs[pri];
311
312	if (req)
313	{
314	if (!(q->qs[pri] = req->next))
315	q->qe[pri] = 0;
316
317	return req;
318	}
319	}
320
321	abort ();
322	}
323
324	static int poll_cb ();
325	static void req_invoke (aio_req req);
326	static void req_free (aio_req req);	243	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	244	static void req_cancel (aio_req req);
328		245
		246	static void
		247	want_poll (void)
		248	{
		249	/* write a dummy byte to the pipe so fh becomes ready */
		250	s_epipe_signal (&respipe);
		251	}
		252
		253	static void
		254	done_poll (void)
		255	{
		256	/* read any signals sent by the worker threads */
		257	s_epipe_drain (&respipe);
		258	}
		259
329	/* must be called at most once */	260	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	261	static SV *
		262	req_sv (aio_req req, HV *stash)
331	{	263	{
332	if (!req->self)	264	if (!req->self)
333	{	265	{
334	req->self = (SV *)newHV ();	266	req->self = (SV *)newHV ();
335	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	267	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
336	}	268	}
337		269
338	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	270	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
339	}	271	}
340		272
341	static aio_req SvAIO_REQ (SV *sv)	273	static SV *
		274	newSVaio_wd (aio_wd wd)
		275	{
		276	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		277	}
		278
		279	static aio_req
		280	SvAIO_REQ (SV *sv)
342	{	281	{
343	MAGIC *mg;	282	MAGIC *mg;
344		283
345	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	284	if (!SvROK (sv)
		285	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		286	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		287	&& SvSTASH (SvRV (sv)) != aio_req_stash
		288	&& !sv_derived_from (sv, "IO::AIO::REQ")))
346	croak ("object of class " AIO_REQ_KLASS " expected");	289	croak ("object of class IO::AIO::REQ expected");
347		290
348	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	291	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
349		292
350	return mg ? (aio_req)mg->mg_ptr : 0;	293	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	294	}
352		295
		296	static aio_wd
		297	SvAIO_WD (SV *sv)
		298	{
		299	if (!SvROK (sv)
		300	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		301	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		302	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		303
		304	return (aio_wd)(long)SvIVX (SvRV (sv));
		305	}
		306
		307	static void
353	static void aio_grp_feed (aio_req grp)	308	aio_grp_feed (aio_req grp)
354	{	309	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	310	if (grp->sv2 && SvOK (grp->sv2))
356	{	311	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	312	dSP;
362		313
363	ENTER;	314	ENTER;
364	SAVETMPS;	315	SAVETMPS;
365	PUSHMARK (SP);	316	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	317	XPUSHs (req_sv (grp, aio_grp_stash));
367	PUTBACK;	318	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	319	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	320	SPAGAIN;
370	FREETMPS;	321	FREETMPS;
371	LEAVE;	322	LEAVE;
372	}
373
374	/* stop if no progress has been made */
375	if (old_len == grp->size)
376	{
377	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;
379	break;
380	}
381	}	323	}
382	}	324	}
383		325
384	static void aio_grp_dec (aio_req grp)	326	static void
		327	req_submit (eio_req *req)
385	{	328	{
386	--grp->size;	329	eio_submit (req);
387		330
388	/* call feeder, if applicable */	331	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	332	{
394	req_invoke (grp);	333	dSP;
395	req_free (grp);	334	SV *cb = sv_2mortal (on_next_submit);
		335
		336	on_next_submit = 0;
		337
		338	PUSHMARK (SP);
		339	PUTBACK;
		340	call_sv (cb, G_DISCARD | G_EVAL);
396	}	341	}
397	}	342	}
398		343
		344	static int
399	static void req_invoke (aio_req req)	345	req_invoke (eio_req *req)
400	{	346	{
401	dSP;
402
403	if (req->flags & FLAG_SV1_RO_OFF)	347	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	348	SvREADONLY_off (req->sv2);
405		349
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	350	if (!EIO_CANCELLED (req) && req->callback)
407	{	351	{
		352	dSP;
		353	static SV *sv_result_cache; /* caches the result integer SV */
		354	SV *sv_result;
		355
408	ENTER;	356	ENTER;
409	SAVETMPS;	357	SAVETMPS;
410	PUSHMARK (SP);	358	PUSHMARK (SP);
411	EXTEND (SP, 1);	359	EXTEND (SP, 1);
412		360
		361	/* do not recreate the result IV from scratch each time */
		362	if (expect_true (sv_result_cache))
		363	{
		364	sv_result = sv_result_cache; sv_result_cache = 0;
		365	SvIV_set (sv_result, req->result);
		366	SvIOK_only (sv_result);
		367	}
		368	else
		369	{
		370	sv_result = newSViv (req->result);
		371	SvREADONLY_on (sv_result);
		372	}
		373
413	switch (req->type)	374	switch (req->type)
414	{	375	{
		376	case EIO_WD_OPEN:
		377	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		378	break;
		379
415	case REQ_READDIR:	380	case EIO_READDIR:
416	{	381	{
417	SV *rv = &PL_sv_undef;	382	SV *rv = &PL_sv_undef;
418		383
419	if (req->result >= 0)	384	if (req->result >= 0)
420	{	385	{
421	int i;	386	int i;
422	char *buf = req->ptr2;	387	char *names = (char *)req->ptr2;
		388	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423	AV *av = newAV ();	389	AV *av = newAV ();
424		390
425	av_extend (av, req->result - 1);	391	av_extend (av, req->result - 1);
426		392
427	for (i = 0; i < req->result; ++i)	393	for (i = 0; i < req->result; ++i)
428	{	394	{
429	SV *sv = newSVpv (buf, 0);	395	if (req->int1 & EIO_READDIR_DENTS)
		396	{
		397	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430		398
		399	if (req->int1 & EIO_READDIR_CUSTOM2)
		400	{
		401	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		402	AV *avent = newAV ();
		403
		404	av_extend (avent, 2);
		405
		406	if (!sv_type [ent->type])
		407	{
		408	sv_type [ent->type] = newSViv (ent->type);
		409	SvREADONLY_on (sv_type [ent->type]);
		410	}
		411
		412	av_store (avent, 0, namesv);
		413	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		414	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		415
		416	av_store (av, i, newRV_noinc ((SV *)avent));
		417	}
		418	else
431	av_store (av, i, sv);	419	av_store (av, i, namesv);
		420
		421	++ent;
		422	}
		423	else
		424	{
		425	SV *name = newSVpv (names, 0);
		426	av_store (av, i, name);
432	buf += SvCUR (sv) + 1;	427	names += SvCUR (name) + 1;
		428	}
433	}	429	}
434		430
435	rv = sv_2mortal (newRV_noinc ((SV *)av));	431	rv = sv_2mortal (newRV_noinc ((SV *)av));
436	}	432	}
437		433
438	PUSHs (rv);	434	PUSHs (rv);
		435
		436	if (req->int1 & EIO_READDIR_CUSTOM1)
		437	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439	}	438	}
440	break;	439	break;
441		440
442	case REQ_OPEN:	441	case EIO_OPEN:
443	{	442	{
444	/* convert fd to fh */	443	/* convert fd to fh */
445	SV *fh;	444	SV *fh = &PL_sv_undef;
446		445
447	PUSHs (sv_2mortal (newSViv (req->result)));	446	if (req->result >= 0)
448	PUTBACK;	447	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	448	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	449	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		450	char sym [64];
		451	int symlen;
		452
		453	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		454	gv_init (gv, aio_stash, sym, symlen, 0);
451		455
452	fh = SvREFCNT_inc (POPs);	456	symlen = snprintf (
		457	sym,
		458	sizeof (sym),
		459	"%s&=%d",
		460	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		461	(int)req->result
		462	);
453		463
		464	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		465	fh = (SV *)gv;
		466	}
		467
454	PUSHMARK (SP);	468	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	469	}
457	break;	470	break;
458		471
		472	case EIO_STATVFS:
		473	case EIO_FSTATVFS:
		474	{
		475	SV *rv = &PL_sv_undef;
		476
		477	#ifndef _WIN32
		478	if (req->result >= 0)
		479	{
		480	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		481	HV *hv = newHV ();
		482
		483	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		484
		485	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		486	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		487	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		488	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		489	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		490	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		491	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		492	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		493	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		494	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		495	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		496	}
		497	#endif
		498
		499	PUSHs (rv);
		500	}
		501
		502	break;
		503
459	case REQ_GROUP:	504	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	505	req->int1 = 2; /* mark group as finished */
461		506
462	if (req->sv1)	507	if (req->sv1)
463	{	508	{
464	int i;	509	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	513	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	514	PUSHs (*av_fetch (av, i, 0));
470	}	515	}
471	break;	516	break;
472		517
473	case REQ_NOP:	518	case EIO_NOP:
474	case REQ_BUSY:	519	case EIO_BUSY:
475	break;	520	break;
476		521
477	case REQ_READLINK:	522	case EIO_READLINK:
		523	case EIO_REALPATH:
478	if (req->result > 0)	524	if (req->result > 0)
		525	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		526	break;
		527
		528	case EIO_STAT:
		529	case EIO_LSTAT:
		530	case EIO_FSTAT:
		531	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		532
		533	if (!(PL_laststatval = req->result))
		534	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		535	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		536
		537	PUSHs (sv_result);
		538	break;
		539
		540	case EIO_SEEK:
		541	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		542	break;
		543
		544	case EIO_READ:
		545	{
		546	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		547	*SvEND (req->sv2) = 0;
		548	SvPOK_only (req->sv2);
		549	SvSETMAGIC (req->sv2);
		550	PUSHs (sv_result);
		551	}
		552	break;
		553
		554	case EIO_CUSTOM:
		555	if (req->feed == fiemap)
479	{	556	{
480	SvCUR_set (req->sv1, req->result);	557	#if HAVE_FIEMAP
481	*SvEND (req->sv1) = 0;
482	PUSHs (req->sv1);	558	if (!req->result)
		559	{
		560	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		561
		562	if (fiemap->fm_extent_count)
		563	{
		564	AV *av = newAV ();
		565	int i;
		566
		567	while (fiemap->fm_mapped_extents)
		568	{
		569	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		570	AV *ext_av = newAV ();
		571
		572	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		573	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		574	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		575	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		576
		577	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		578	}
		579
		580	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		581	}
		582	else
		583	{
		584	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		585	PUSHs (sv_result);
		586	}
		587	}
		588	#endif
483	}	589	}
		590	else
		591	PUSHs (sv_result);
484	break;	592	break;
485		593
486	case REQ_STAT:	594	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
487	case REQ_LSTAT:	595	if (req->result > 0)
488	case REQ_FSTAT:	596	SvIV_set (sv_result, 0);
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	597	/* FALLTHROUGH */
490	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));
493	break;
494
495	case REQ_READ:
496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));
497	*SvEND (req->sv1) = 0;
498	PUSHs (sv_2mortal (newSViv (req->result)));
499	break;
500		598
501	default:	599	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	600	PUSHs (sv_result);
503	break;	601	break;
504	}	602	}
505		603
506	errno = req->errorno;	604	errno = req->errorno;
507		605
508	PUTBACK;	606	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	607	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	SPAGAIN;	608	SPAGAIN;
		609
		610	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		611	SvREFCNT_dec (sv_result);
		612	else
		613	sv_result_cache = sv_result;
511		614
512	FREETMPS;	615	FREETMPS;
513	LEAVE;	616	LEAVE;
		617
		618	PUTBACK;
514	}	619	}
515		620
516	if (req->grp)	621	return !!SvTRUE (ERRSV);
517	{
518	aio_req grp = req->grp;
519
520	/* unlink request */
521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524	if (grp->grp_first == req)
525	grp->grp_first = req->grp_next;
526
527	aio_grp_dec (grp);
528	}
529
530	if (SvTRUE (ERRSV))
531	{
532	req_free (req);
533	croak (0);
534	}
535	}	622	}
536		623
537	static void req_free (aio_req req)	624	static void
		625	req_destroy (aio_req req)
538	{	626	{
539	if (req->self)	627	if (req->self)
540	{	628	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	629	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	630	SvREFCNT_dec (req->self);
543	}	631	}
544		632
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	633	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	634	SvREFCNT_dec (req->sv2);
		635	SvREFCNT_dec (req->sv3);
		636	SvREFCNT_dec (req->sv4);
548	SvREFCNT_dec (req->callback);	637	SvREFCNT_dec (req->callback);
549		638
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	639	free (req);
554	}	640	}
555		641
		642	static void
556	static void req_cancel_subs (aio_req grp)	643	req_cancel_subs (aio_req grp)
557	{	644	{
558	aio_req sub;
559
560	if (grp->type != REQ_GROUP)	645	if (grp->type != EIO_GROUP)
561	return;	646	return;
562		647
563	SvREFCNT_dec (grp->sv2);	648	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	649	grp->sv2 = 0;
565		650
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	651	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	652	}
569		653
570	static void req_cancel (aio_req req)	654	static void ecb_cold
		655	create_respipe (void)
571	{	656	{
572	req->flags |= FLAG_CANCELLED;	657	if (s_epipe_renew (&respipe))
573		658	croak ("IO::AIO: unable to initialize result pipe");
574	req_cancel_subs (req);
575	}	659	}
576		660
577	static void *aio_proc(void *arg);	661	static void
578		662	poll_wait (void)
579	static void start_thread (void)
580	{	663	{
581	sigset_t fullsigset, oldsigset;
582	pthread_attr_t attr;
583
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	pthread_attr_init (&attr);
590	pthread_attr_setstacksize (&attr, STACKSIZE);
591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592	#ifdef PTHREAD_SCOPE_PROCESS
593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594	#endif
595
596	sigfillset (&fullsigset);
597
598	LOCK (wrklock);
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
600
601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
602	{
603	wrk->prev = &wrk_first;
604	wrk->next = wrk_first.next;
605	wrk_first.next->prev = wrk;
606	wrk_first.next = wrk;
607	++started;
608	}
609	else
610	free (wrk);
611
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);
613	UNLOCK (wrklock);
614	}
615
616	static void maybe_start_thread ()
617	{
618	if (get_nthreads () >= wanted)
619	return;
620
621	/* todo: maybe use idle here, but might be less exact */
622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623	return;
624
625	start_thread ();
626	}
627
628	static void req_send (aio_req req)
629	{
630	++nreqs;
631
632	LOCK (reqlock);
633	++nready;
634	reqq_push (&req_queue, req);
635	pthread_cond_signal (&reqwait);
636	UNLOCK (reqlock);
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	pthread_cond_signal (&reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()
683	{
684	fd_set rfd;
685
686	while (nreqs)	664	while (eio_nreqs ())
687	{	665	{
688	int size;	666	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	667
		668	X_LOCK (reslock);
690	size = res_queue.size;	669	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	670	X_UNLOCK (reslock);
692		671
693	if (size)	672	if (size)
694	return;	673	return;
695		674
696	maybe_start_thread ();	675	etp_maybe_start_thread ();
697		676
698	FD_ZERO(&rfd);	677	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	678	}
703	}	679	}
704		680
705	static int poll_cb ()	681	static int
		682	poll_cb (void)
706	{	683	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	for (;;)	684	for (;;)
718	{	685	{
719	for (;;)	686	int res = eio_poll ();
		687
		688	if (res > 0)
		689	croak (0);
		690
		691	if (!max_outstanding || max_outstanding > eio_nreqs ())
		692	return res;
		693
		694	poll_wait ();
		695	}
		696	}
		697
		698	static void ecb_cold
		699	reinit (void)
		700	{
		701	create_respipe ();
		702
		703	if (eio_init (want_poll, done_poll) < 0)
		704	croak ("IO::AIO: unable to initialise eio library");
		705	}
		706
		707	/*****************************************************************************/
		708
		709	#if !_POSIX_MAPPED_FILES
		710	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		711	# define munmap(addr,length) EIO_ENOSYS ()
		712	#endif
		713
		714	#if !_POSIX_MEMORY_PROTECTION
		715	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		716	# define PROT_NONE 0
		717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
		721	#endif
		722
		723	#define MMAP_MAGIC PERL_MAGIC_ext
		724
		725	static int ecb_cold
		726	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		727	{
		728	int old_errno = errno;
		729	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		730	errno = old_errno;
		731
		732	mg->mg_obj = 0; /* just in case */
		733
		734	SvREADONLY_off (sv);
		735
		736	if (SvPVX (sv) != mg->mg_ptr)
		737	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		738
		739	SvCUR_set (sv, 0);
		740	SvPVX (sv) = 0;
		741	SvOK_off (sv);
		742
		743	return 0;
		744	}
		745
		746	static MGVTBL mmap_vtbl = {
		747	0, 0, 0, 0, mmap_free
		748	};
		749
		750	/*****************************************************************************/
		751
		752	static SV *
		753	get_cb (SV *cb_sv)
		754	{
		755	SvGETMAGIC (cb_sv);
		756	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		757	}
		758
		759	static aio_req ecb_noinline
		760	dreq (SV *callback)
		761	{
		762	SV *cb_cv;
		763	aio_req req;
		764	int req_pri = next_pri;
		765	next_pri = EIO_PRI_DEFAULT;
		766
		767	cb_cv = get_cb (callback);
		768
		769	req = calloc (sizeof (*req), 1);
		770	if (!req)
		771	croak ("out of memory during eio_req allocation");
		772
		773	req->callback = SvREFCNT_inc (cb_cv);
		774	req->pri = req_pri;
		775
		776	return req;
		777	}
		778
		779	#define dREQ \
		780	aio_req req = dreq (callback); \
		781
		782	#define REQ_SEND \
		783	PUTBACK; \
		784	req_submit (req); \
		785	SPAGAIN; \
		786	\
		787	if (GIMME_V != G_VOID) \
		788	XPUSHs (req_sv (req, aio_req_stash));
		789
		790	ecb_inline void
		791	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		792	{
		793	if (expect_false (SvROK (path)))
		794	{
		795	SV *rv = SvRV (path);
		796	SV *wdob;
		797
		798	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
720	{	799	{
721	maybe_start_thread ();	800	path = AvARRAY (rv)[1];
		801	wdob = AvARRAY (rv)[0];
722		802
723	LOCK (reslock);	803	if (SvOK (wdob))
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{	804	{
728	--npending;	805	*wd = SvAIO_WD (wdob);
729		806	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
730	if (!res_queue.size)
731	{
732	/* read any signals sent by the worker threads */
733	char buf [32];
734	while (read (respipe [0], buf, 32) == 32)
735	;
736	}
737	}
738
739	UNLOCK (reslock);
740
741	if (!req)
742	break;
743
744	--nreqs;
745
746	if (req->type == REQ_GROUP && req->size)
747	{
748	req->int1 = 1; /* mark request as delayed */
749	continue;
750	}	807	}
751	else	808	else
752	{	809	*wd = EIO_INVALID_WD;
753	req_invoke (req);
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	}	810	}
		811	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		812	{
		813	*wd = (aio_wd)(long)SvIVX (rv);
		814	*wdsv = SvREFCNT_inc_NN (rv);
		815	*ptr = ".";
		816	return; /* path set to "." */
		817	}
		818	else
		819	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		820	}
771		821
772	if (nreqs <= max_outstanding)	822	*pathsv = newSVsv (path);
		823	*ptr = SvPVbyte_nolen (*pathsv);
		824	}
		825
		826	static void ecb_noinline
		827	req_set_path1 (aio_req req, SV *path)
		828	{
		829	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		830	}
		831
		832	static void ecb_noinline
		833	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		834	{
		835	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		836
		837	switch (SvTYPE (rv))
		838	{
		839	case SVt_PVIO:
		840	case SVt_PVLV:
		841	case SVt_PVGV:
		842	req->type = type_fh;
		843	req->sv1 = newSVsv (fh_or_path);
		844	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
773	break;	845	break;
774		846
775	poll_wait ();	847	default:
776		848	req->type = type_path;
777	++maxreqs;	849	req_set_path1 (req, fh_or_path);
		850	break;
778	}	851	}
779
780	return count;
781	}	852	}
782		853
783	static void create_pipe ()	854	XS(boot_IO__AIO) ecb_cold;
784	{
785	if (pipe (respipe))
786	croak ("unable to initialize result pipe");
787		855
788	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790
791	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792	croak ("cannot set result pipe to nonblocking mode");
793	}
794
795	/*****************************************************************************/
796	/* work around various missing functions */
797
798	#if !HAVE_PREADWRITE
799	# define pread aio_pread
800	# define pwrite aio_pwrite
801
802	/*
803	* make our pread/pwrite safe against themselves, but not against
804	* normal read/write by using a mutex. slows down execution a lot,
805	* but that's your problem, not mine.
806	*/
807	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810	{
811	ssize_t res;
812	off_t ooffset;
813
814	LOCK (preadwritelock);
815	ooffset = lseek (fd, 0, SEEK_CUR);
816	lseek (fd, offset, SEEK_SET);
817	res = read (fd, buf, count);
818	lseek (fd, ooffset, SEEK_SET);
819	UNLOCK (preadwritelock);
820
821	return res;
822	}
823
824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825	{
826	ssize_t res;
827	off_t ooffset;
828
829	LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);
832	res = write (fd, buf, count);
833	lseek (fd, offset, SEEK_SET);
834	UNLOCK (preadwritelock);
835
836	return res;
837	}
838	#endif
839
840	#if !HAVE_FDATASYNC
841	# define fdatasync fsync
842	#endif
843
844	#if !HAVE_READAHEAD
845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848	{
849	dBUF;
850
851	while (count > 0)
852	{
853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855	pread (fd, aio_buf, len, offset);
856	offset += len;
857	count -= len;
858	}
859
860	errno = 0;
861	}
862
863	#endif
864
865	#if !HAVE_READDIR_R
866	# define readdir_r aio_readdir_r
867
868	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871	{
872	struct dirent *e;
873	int errorno;
874
875	LOCK (readdirlock);
876
877	e = readdir (dirp);
878	errorno = errno;
879
880	if (e)
881	{
882	*res = ent;
883	strcpy (ent->d_name, e->d_name);
884	}
885	else
886	*res = 0;
887
888	UNLOCK (readdirlock);
889
890	errno = errorno;
891	return e ? 0 : -1;
892	}
893	#endif
894
895	/* sendfile always needs emulation */
896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897	{
898	ssize_t res;
899
900	if (!count)
901	return 0;
902
903	#if HAVE_SENDFILE
904	# if __linux
905	res = sendfile (ofd, ifd, &offset, count);
906
907	# elif __freebsd
908	/*
909	* Of course, the freebsd sendfile is a dire hack with no thoughts
910	* wasted on making it similar to other I/O functions.
911	*/
912	{
913	off_t sbytes;
914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916	if (res < 0 && sbytes)
917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918	res = sbytes;
919	}
920
921	# elif __hpux
922	res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924	# elif __solaris
925	{
926	struct sendfilevec vec;
927	size_t sbytes;
928
929	vec.sfv_fd = ifd;
930	vec.sfv_flag = 0;
931	vec.sfv_off = offset;
932	vec.sfv_len = count;
933
934	res = sendfilev (ofd, &vec, 1, &sbytes);
935
936	if (res < 0 && sbytes)
937	res = sbytes;
938	}
939
940	# endif
941	#else
942	res = -1;
943	errno = ENOSYS;
944	#endif
945
946	if (res < 0
947	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948	#if __solaris
949	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
950	#endif
951	)
952	)
953	{
954	/* emulate sendfile. this is a major pain in the ass */
955	dBUF;
956
957	res = 0;
958
959	while (count)
960	{
961	ssize_t cnt;
962
963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965	if (cnt <= 0)
966	{
967	if (cnt && !res) res = -1;
968	break;
969	}
970
971	cnt = write (ofd, aio_buf, cnt);
972
973	if (cnt <= 0)
974	{
975	if (cnt && !res) res = -1;
976	break;
977	}
978
979	offset += cnt;
980	res += cnt;
981	count -= cnt;
982	}
983	}
984
985	return res;
986	}
987
988	/* read a full directory */
989	static void scandir_ (aio_req req, worker *self)
990	{
991	DIR *dirp;
992	union
993	{
994	struct dirent d;
995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996	} *u;
997	struct dirent *entp;
998	char *name, *names;
999	int memlen = 4096;
1000	int memofs = 0;
1001	int res = 0;
1002	int errorno;
1003
1004	LOCK (wrklock);
1005	self->dirp = dirp = opendir (req->ptr1);
1006	self->dbuf = u = malloc (sizeof (*u));
1007	req->flags |= FLAG_PTR2_FREE;
1008	req->ptr2 = names = malloc (memlen);
1009	UNLOCK (wrklock);
1010
1011	if (dirp && u && names)
1012	for (;;)
1013	{
1014	errno = 0;
1015	readdir_r (dirp, &u->d, &entp);
1016
1017	if (!entp)
1018	break;
1019
1020	name = entp->d_name;
1021
1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023	{
1024	int len = strlen (name) + 1;
1025
1026	res++;
1027
1028	while (memofs + len > memlen)
1029	{
1030	memlen *= 2;
1031	LOCK (wrklock);
1032	req->ptr2 = names = realloc (names, memlen);
1033	UNLOCK (wrklock);
1034
1035	if (!names)
1036	break;
1037	}
1038
1039	memcpy (names + memofs, name, len);
1040	memofs += len;
1041	}
1042	}
1043
1044	if (errno)
1045	res = -1;
1046
1047	req->result = res;
1048	}
1049
1050	/*****************************************************************************/
1051
1052	static void *aio_proc (void *thr_arg)
1053	{
1054	aio_req req;
1055	struct timespec ts;
1056	worker *self = (worker *)thr_arg;
1057
1058	/* try to distribute timeouts somewhat evenly */
1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060	* (1000000000UL / 1024UL);
1061
1062	for (;;)
1063	{
1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066	LOCK (reqlock);
1067
1068	for (;;)
1069	{
1070	self->req = req = reqq_shift (&req_queue);
1071
1072	if (req)
1073	break;
1074
1075	++idle;
1076
1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078	== ETIMEDOUT)
1079	{
1080	if (idle > max_idle)
1081	{
1082	--idle;
1083	UNLOCK (reqlock);
1084	LOCK (wrklock);
1085	--started;
1086	UNLOCK (wrklock);
1087	goto quit;
1088	}
1089
1090	/* we are allowed to idle, so do so without any timeout */
1091	pthread_cond_wait (&reqwait, &reqlock);
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093	}
1094
1095	--idle;
1096	}
1097
1098	--nready;
1099
1100	UNLOCK (reqlock);
1101
1102	errno = 0; /* strictly unnecessary */
1103
1104	if (!(req->flags & FLAG_CANCELLED))
1105	switch (req->type)
1106	{
1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118	case REQ_CLOSE: req->result = close (req->int1); break;
1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
1129	case REQ_READDIR: scandir_ (req, self); break;
1130
1131	case REQ_BUSY:
1132	{
1133	struct timeval tv;
1134
1135	tv.tv_sec = req->int1;
1136	tv.tv_usec = req->int2;
1137
1138	req->result = select (0, 0, 0, 0, &tv);
1139	}
1140
1141	case REQ_GROUP:
1142	case REQ_NOP:
1143	break;
1144
1145	case REQ_QUIT:
1146	goto quit;
1147
1148	default:
1149	req->result = ENOSYS;
1150	break;
1151	}
1152
1153	req->errorno = errno;
1154
1155	LOCK (reslock);
1156
1157	++npending;
1158
1159	if (!reqq_push (&res_queue, req))
1160	/* write a dummy byte to the pipe so fh becomes ready */
1161	write (respipe [1], &respipe, 1);
1162
1163	self->req = 0;
1164	worker_clear (self);
1165
1166	UNLOCK (reslock);
1167	}
1168
1169	quit:
1170	LOCK (wrklock);
1171	worker_free (self);
1172	UNLOCK (wrklock);
1173
1174	return 0;
1175	}
1176
1177	/*****************************************************************************/
1178
1179	static void atfork_prepare (void)
1180	{
1181	LOCK (wrklock);
1182	LOCK (reqlock);
1183	LOCK (reslock);
1184	#if !HAVE_PREADWRITE
1185	LOCK (preadwritelock);
1186	#endif
1187	#if !HAVE_READDIR_R
1188	LOCK (readdirlock);
1189	#endif
1190	}
1191
1192	static void atfork_parent (void)
1193	{
1194	#if !HAVE_READDIR_R
1195	UNLOCK (readdirlock);
1196	#endif
1197	#if !HAVE_PREADWRITE
1198	UNLOCK (preadwritelock);
1199	#endif
1200	UNLOCK (reslock);
1201	UNLOCK (reqlock);
1202	UNLOCK (wrklock);
1203	}
1204
1205	static void atfork_child (void)
1206	{
1207	aio_req prv;
1208
1209	while (prv = reqq_shift (&req_queue))
1210	req_free (prv);
1211
1212	while (prv = reqq_shift (&res_queue))
1213	req_free (prv);
1214
1215	while (wrk_first.next != &wrk_first)
1216	{
1217	worker *wrk = wrk_first.next;
1218
1219	if (wrk->req)
1220	req_free (wrk->req);
1221
1222	worker_clear (wrk);
1223	worker_free (wrk);
1224	}
1225
1226	started = 0;
1227	idle = 0;
1228	nreqs = 0;
1229	nready = 0;
1230	npending = 0;
1231
1232	close (respipe [0]);
1233	close (respipe [1]);
1234	create_pipe ();
1235
1236	atfork_parent ();
1237	}
1238
1239	#define dREQ \
1240	aio_req req; \
1241	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \
1243	\
1244	if (SvOK (callback) && !SvROK (callback)) \
1245	croak ("callback must be undef or of reference type"); \
1246	\
1247	Newz (0, req, 1, aio_cb); \
1248	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \
1250	\
1251	req->callback = newSVsv (callback); \
1252	req->pri = req_pri
1253
1254	#define REQ_SEND \
1255	req_send (req); \
1256	\
1257	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259
1260	MODULE = IO::AIO PACKAGE = IO::AIO	856	MODULE = IO::AIO PACKAGE = IO::AIO
1261		857
1262	PROTOTYPES: ENABLE	858	PROTOTYPES: ENABLE
1263		859
1264	BOOT:	860	BOOT:
1265	{	861	{
		862	static const struct {
		863	const char *name;
		864	IV iv;
		865	} *civ, const_iv[] = {
		866	# define const_niv(name, value) { # name, (IV) value },
		867	# define const_iv(name) { # name, (IV) name },
		868	# define const_eio(name) { # name, (IV) EIO_ ## name },
		869
		870	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		871
		872	const_iv (ENOSYS)
		873	const_iv (EXDEV)
		874	const_iv (EBADR)
		875
		876	const_iv (O_RDONLY)
		877	const_iv (O_WRONLY)
		878	const_iv (O_RDWR)
		879	const_iv (O_CREAT)
		880	const_iv (O_TRUNC)
		881	const_iv (O_EXCL)
		882	const_iv (O_APPEND)
		883
		884	const_iv (O_ASYNC)
		885	const_iv (O_DIRECT)
		886	const_iv (O_NOATIME)
		887
		888	const_iv (O_CLOEXEC)
		889	const_iv (O_NOCTTY)
		890	const_iv (O_NOFOLLOW)
		891	const_iv (O_NONBLOCK)
		892	const_iv (O_EXEC)
		893	const_iv (O_SEARCH)
		894	const_iv (O_DIRECTORY)
		895	const_iv (O_DSYNC)
		896	const_iv (O_RSYNC)
		897	const_iv (O_SYNC)
		898	const_iv (O_TTY_INIT)
		899
		900	const_iv (S_IFIFO)
		901	const_iv (S_IFCHR)
		902	const_iv (S_IFBLK)
		903	const_iv (S_IFLNK)
		904	const_iv (S_IFREG)
		905	const_iv (S_IFDIR)
		906	const_iv (S_IFWHT)
		907	const_iv (S_IFSOCK)
		908	const_iv (S_IFMT)
		909
		910	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		911	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		912	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		913	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		914	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		915	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		916
		917	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		918	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		919	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		920	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		921	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		922
		923	const_iv (ST_RDONLY)
		924	const_iv (ST_NOSUID)
		925	const_iv (ST_NODEV)
		926	const_iv (ST_NOEXEC)
		927	const_iv (ST_SYNCHRONOUS)
		928	const_iv (ST_MANDLOCK)
		929	const_iv (ST_WRITE)
		930	const_iv (ST_APPEND)
		931	const_iv (ST_IMMUTABLE)
		932	const_iv (ST_NOATIME)
		933	const_iv (ST_NODIRATIME)
		934	const_iv (ST_RELATIME)
		935
		936	const_iv (PROT_NONE)
		937	const_iv (PROT_EXEC)
		938	const_iv (PROT_READ)
		939	const_iv (PROT_WRITE)
		940
		941	/*const_iv (MAP_FIXED)*/
		942	const_iv (MAP_PRIVATE)
		943	const_iv (MAP_SHARED)
		944	const_iv (MAP_ANONYMOUS)
		945
		946	/* linuxish */
		947	const_iv (MAP_HUGETLB)
		948	const_iv (MAP_LOCKED)
		949	const_iv (MAP_NORESERVE)
		950	const_iv (MAP_POPULATE)
		951	const_iv (MAP_NONBLOCK)
		952
		953	const_iv (FIEMAP_FLAG_SYNC)
		954	const_iv (FIEMAP_FLAG_XATTR)
		955	const_iv (FIEMAP_FLAGS_COMPAT)
		956	const_iv (FIEMAP_EXTENT_LAST)
		957	const_iv (FIEMAP_EXTENT_UNKNOWN)
		958	const_iv (FIEMAP_EXTENT_DELALLOC)
		959	const_iv (FIEMAP_EXTENT_ENCODED)
		960	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		961	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		962	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		963	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		964	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		965	const_iv (FIEMAP_EXTENT_MERGED)
		966	const_iv (FIEMAP_EXTENT_SHARED)
		967
		968	const_iv (SPLICE_F_MOVE)
		969	const_iv (SPLICE_F_NONBLOCK)
		970	const_iv (SPLICE_F_MORE)
		971	const_iv (SPLICE_F_GIFT)
		972
		973	const_iv (SEEK_DATA)
		974	const_iv (SEEK_HOLE)
		975
		976	/* libeio constants */
		977	const_eio (SEEK_SET)
		978	const_eio (SEEK_CUR)
		979	const_eio (SEEK_END)
		980
		981	const_eio (MCL_FUTURE)
		982	const_eio (MCL_CURRENT)
		983
		984	const_eio (MS_ASYNC)
		985	const_eio (MS_INVALIDATE)
		986	const_eio (MS_SYNC)
		987
		988	const_eio (MT_MODIFY)
		989
		990	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		991	const_eio (SYNC_FILE_RANGE_WRITE)
		992	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		993
		994	const_eio (FALLOC_FL_KEEP_SIZE)
		995	const_eio (FALLOC_FL_PUNCH_HOLE)
		996
		997	const_eio (READDIR_DENTS)
		998	const_eio (READDIR_DIRS_FIRST)
		999	const_eio (READDIR_STAT_ORDER)
		1000	const_eio (READDIR_FOUND_UNKNOWN)
		1001
		1002	const_eio (DT_UNKNOWN)
		1003	const_eio (DT_FIFO)
		1004	const_eio (DT_CHR)
		1005	const_eio (DT_DIR)
		1006	const_eio (DT_BLK)
		1007	const_eio (DT_REG)
		1008	const_eio (DT_LNK)
		1009	const_eio (DT_SOCK)
		1010	const_eio (DT_WHT)
		1011	};
		1012
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	1013	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1014	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1015	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1016	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1267		1017
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1018	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1019	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274		1020
1275	create_pipe ();	1021	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1277	}
1278		1022
		1023	reinit ();
		1024	}
		1025
1279	void	1026	void
		1027	reinit ()
		1028	PROTOTYPE:
		1029
		1030	void
1280	max_poll_reqs (int nreqs)	1031	max_poll_reqs (unsigned int nreqs)
1281	PROTOTYPE: $	1032	PROTOTYPE: $
1282	CODE:	1033	CODE:
1283	max_poll_reqs = nreqs;	1034	eio_set_max_poll_reqs (nreqs);
1284		1035
1285	void	1036	void
1286	max_poll_time (double nseconds)	1037	max_poll_time (double nseconds)
1287	PROTOTYPE: $	1038	PROTOTYPE: $
1288	CODE:	1039	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	1040	eio_set_max_poll_time (nseconds);
1290		1041
1291	void	1042	void
1292	min_parallel (int nthreads)	1043	min_parallel (unsigned int nthreads)
1293	PROTOTYPE: $
1294
1295	void
1296	max_parallel (int nthreads)
1297	PROTOTYPE: $
1298
1299	void
1300	max_idle (int nthreads)
1301	PROTOTYPE: $	1044	PROTOTYPE: $
1302	CODE:	1045	CODE:
1303	set_max_idle (nthreads);	1046	eio_set_min_parallel (nthreads);
1304		1047
1305	int	1048	void
1306	max_outstanding (int maxreqs)	1049	max_parallel (unsigned int nthreads)
1307	PROTOTYPE: $	1050	PROTOTYPE: $
1308	CODE:	1051	CODE:
1309	RETVAL = max_outstanding;	1052	eio_set_max_parallel (nthreads);
		1053
		1054	void
		1055	max_idle (unsigned int nthreads)
		1056	PROTOTYPE: $
		1057	CODE:
		1058	eio_set_max_idle (nthreads);
		1059
		1060	void
		1061	idle_timeout (unsigned int seconds)
		1062	PROTOTYPE: $
		1063	CODE:
		1064	eio_set_idle_timeout (seconds);
		1065
		1066	void
		1067	max_outstanding (unsigned int maxreqs)
		1068	PROTOTYPE: $
		1069	CODE:
1310	max_outstanding = maxreqs;	1070	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		1071
1314	void	1072	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1073	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$
1321	PPCODE:	1074	PPCODE:
1322	{	1075	{
1323	dREQ;	1076	dREQ;
1324		1077
		1078	req->type = EIO_WD_OPEN;
		1079	req_set_path1 (req, pathname);
		1080
		1081	REQ_SEND;
		1082	}
		1083
		1084	void
		1085	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1086	PPCODE:
		1087	{
		1088	dREQ;
		1089
1325	req->type = REQ_OPEN;	1090	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	1091	req_set_path1 (req, pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	1092	req->int1 = flags;
1329	req->mode = mode;	1093	req->int2 = mode;
1330		1094
1331	REQ_SEND;	1095	REQ_SEND;
1332	}	1096	}
1333		1097
1334	void	1098	void
1335	aio_close (fh,callback=&PL_sv_undef)	1099	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$
1339	ALIAS:	1100	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	1101	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	1102	aio_fdatasync = EIO_FDATASYNC
		1103	aio_syncfs = EIO_SYNCFS
1343	PPCODE:	1104	PPCODE:
1344	{	1105	{
		1106	int fd = s_fileno_croak (fh, 0);
1345	dREQ;	1107	dREQ;
1346		1108
1347	req->type = ix;	1109	req->type = ix;
1348	req->fh = newSVsv (fh);	1110	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1111	req->int1 = fd;
1350		1112
1351	REQ_SEND (req);	1113	REQ_SEND;
1352	}	1114	}
1353		1115
1354	void	1116	void
		1117	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1118	PPCODE:
		1119	{
		1120	int fd = s_fileno_croak (fh, 0);
		1121	dREQ;
		1122
		1123	req->type = EIO_SYNC_FILE_RANGE;
		1124	req->sv1 = newSVsv (fh);
		1125	req->int1 = fd;
		1126	req->offs = offset;
		1127	req->size = nbytes;
		1128	req->int2 = flags;
		1129
		1130	REQ_SEND;
		1131	}
		1132
		1133	void
		1134	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1135	PPCODE:
		1136	{
		1137	int fd = s_fileno_croak (fh, 0);
		1138	dREQ;
		1139
		1140	req->type = EIO_FALLOCATE;
		1141	req->sv1 = newSVsv (fh);
		1142	req->int1 = fd;
		1143	req->int2 = mode;
		1144	req->offs = offset;
		1145	req->size = len;
		1146
		1147	REQ_SEND;
		1148	}
		1149
		1150	void
		1151	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1152	PPCODE:
		1153	{
		1154	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1155	int fd = s_fileno_croak (fh, 0);
		1156	dREQ;
		1157
		1158	if (expect_false (close_fd < 0))
		1159	{
		1160	int pipefd [2];
		1161
		1162	if (
		1163	#ifdef _WIN32
		1164	_pipe (pipefd, 1, _O_BINARY) < 0
		1165	#else
		1166	pipe (pipefd) < 0
		1167	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1168	#endif
		1169	|| close (pipefd [1]) < 0
		1170	)
		1171	abort (); /*D*/
		1172
		1173	close_fd = pipefd [0];
		1174	}
		1175
		1176	req->type = EIO_DUP2;
		1177	req->int1 = close_fd;
		1178	req->sv2 = newSVsv (fh);
		1179	req->int2 = fd;
		1180
		1181	REQ_SEND;
		1182	}
		1183
		1184	void
		1185	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1186	PPCODE:
		1187	{
		1188	int fd = s_fileno_croak (fh, 0);
		1189	dREQ;
		1190
		1191	req->type = EIO_SEEK;
		1192	req->sv1 = newSVsv (fh);
		1193	req->int1 = fd;
		1194	req->offs = SvVAL64 (offset);
		1195	req->int2 = whence;
		1196
		1197	REQ_SEND;
		1198	}
		1199
		1200	void
1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1201	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	1202	ALIAS:
1363	aio_read = REQ_READ	1203	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	1204	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$
1366	PPCODE:	1205	PPCODE:
1367	{	1206	{
1368	STRLEN svlen;	1207	STRLEN svlen;
		1208	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369	char *svptr = SvPVbyte (data, svlen);	1209	char *svptr = SvPVbyte (data, svlen);
1370		1210	UV len = SvUV (length);
1371	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);
1373		1211
1374	if (dataoffset < 0)	1212	if (dataoffset < 0)
1375	dataoffset += svlen;	1213	dataoffset += svlen;
1376		1214
1377	if (dataoffset < 0 || dataoffset > svlen)	1215	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	1216	croak ("dataoffset outside of data scalar");
1379		1217
1380	if (ix == REQ_WRITE)	1218	if (ix == EIO_WRITE)
1381	{	1219	{
1382	/* write: check length and adjust. */	1220	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	1221	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	1222	len = svlen - dataoffset;
1385	}	1223	}
1386	else	1224	else
1387	{	1225	{
1388	/* read: grow scalar as necessary */	1226	/* read: check type and grow scalar as necessary */
		1227	SvUPGRADE (data, SVt_PV);
		1228	if (SvLEN (data) >= SvCUR (data))
1389	svptr = SvGROW (data, length + dataoffset);	1229	svptr = SvGROW (data, len + dataoffset + 1);
		1230	else if (SvCUR (data) < len + dataoffset)
		1231	croak ("length + dataoffset outside of scalar, and cannot grow");
1390	}	1232	}
1391
1392	if (length < 0)
1393	croak ("length must not be negative");
1394		1233
1395	{	1234	{
1396	dREQ;	1235	dREQ;
1397		1236
1398	req->type = ix;	1237	req->type = ix;
1399	req->fh = newSVsv (fh);	1238	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1239	req->int1 = fd;
1401	: IoOFP (sv_2io (fh)));	1240	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->offs = offset;
1403	req->size = length;	1241	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	1242	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	1243	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	1244	req->stroffset = dataoffset;
1407		1245
1408	if (!SvREADONLY (data))	1246	if (!SvREADONLY (data))
1409	{	1247	{
1410	SvREADONLY_on (data);	1248	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	1249	req->flags |= FLAG_SV2_RO_OFF;
1412	}	1250	}
1413		1251
1414	REQ_SEND;	1252	REQ_SEND;
1415	}	1253	}
1416	}	1254	}
1417		1255
1418	void	1256	void
1419	aio_readlink (path,callback=&PL_sv_undef)	1257	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1420	SV8 * path	1258	ALIAS:
1421	SV * callback	1259	aio_readlink = EIO_READLINK
1422	PROTOTYPE: $$;$	1260	aio_realpath = EIO_REALPATH
1423	PPCODE:	1261	PPCODE:
1424	{	1262	{
1425	SV *data;
1426	dREQ;	1263	dREQ;
1427		1264
1428	data = newSV (NAME_MAX);
1429	SvPOK_on (data);
1430
1431	req->type = REQ_READLINK;	1265	req->type = ix;
1432	req->fh = newSVsv (path);	1266	req_set_path1 (req, pathname);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);
1434	req->sv1 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);
1436		1267
1437	REQ_SEND;	1268	REQ_SEND;
1438	}	1269	}
1439		1270
1440	void	1271	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1272	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$
1448	PPCODE:	1273	PPCODE:
1449	{	1274	{
		1275	int ifd = s_fileno_croak (in_fh , 0);
		1276	int ofd = s_fileno_croak (out_fh, 1);
1450	dREQ;	1277	dREQ;
1451		1278
1452	req->type = REQ_SENDFILE;	1279	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	1280	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1281	req->int1 = ofd;
1455	req->sv2 = newSVsv (in_fh);	1282	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1283	req->int2 = ifd;
1457	req->offs = in_offset;	1284	req->offs = in_offset;
1458	req->size = length;	1285	req->size = length;
1459		1286
1460	REQ_SEND;	1287	REQ_SEND;
1461	}	1288	}
1462		1289
1463	void	1290	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1291	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$
1470	PPCODE:	1292	PPCODE:
1471	{	1293	{
		1294	int fd = s_fileno_croak (fh, 0);
1472	dREQ;	1295	dREQ;
1473		1296
1474	req->type = REQ_READAHEAD;	1297	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	1298	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1299	req->int1 = fd;
1477	req->offs = offset;	1300	req->offs = offset;
1478	req->size = length;	1301	req->size = length;
1479		1302
1480	REQ_SEND;	1303	REQ_SEND;
1481	}	1304	}
1482		1305
1483	void	1306	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	1307	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	1308	ALIAS:
1488	aio_stat = REQ_STAT	1309	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	1310	aio_lstat = EIO_LSTAT
		1311	aio_statvfs = EIO_STATVFS
1490	PPCODE:	1312	PPCODE:
1491	{	1313	{
1492	dREQ;	1314	dREQ;
1493		1315
1494	req->ptr2 = malloc (sizeof (Stat_t));	1316	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
1495	if (!req->ptr2)
1496	{
1497	req_free (req);
1498	croak ("out of memory during aio_stat statdata allocation");
1499	}
1500
1501	req->flags |= FLAG_PTR2_FREE;
1502
1503	if (SvPOK (fh_or_path))
1504	{
1505	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}
1509	else
1510	{
1511	req->type = REQ_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}
1515		1317
1516	REQ_SEND;	1318	REQ_SEND;
1517	}	1319	}
1518		1320
		1321	UV
		1322	major (UV dev)
		1323	ALIAS:
		1324	minor = 1
		1325	CODE:
		1326	RETVAL = ix ? major (dev) : minor (dev);
		1327	OUTPUT:
		1328	RETVAL
		1329
		1330	UV
		1331	makedev (UV maj, UV min)
		1332	CODE:
		1333	RETVAL = makedev (maj, min);
		1334	OUTPUT:
		1335	RETVAL
		1336
1519	void	1337	void
		1338	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1339	PPCODE:
		1340	{
		1341	dREQ;
		1342
		1343	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1344	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1345	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1346
		1347	REQ_SEND;
		1348	}
		1349
		1350	void
		1351	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1352	PPCODE:
		1353	{
		1354	dREQ;
		1355
		1356	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1357	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1358
		1359	REQ_SEND;
		1360	}
		1361
		1362	void
		1363	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1364	PPCODE:
		1365	{
		1366	dREQ;
		1367
		1368	req->int2 = mode;
		1369	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1370
		1371	REQ_SEND;
		1372	}
		1373
		1374	void
		1375	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1376	PPCODE:
		1377	{
		1378	dREQ;
		1379
		1380	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1381	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1382	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1383
		1384	REQ_SEND;
		1385	}
		1386
		1387	void
		1388	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1389	PPCODE:
		1390	{
		1391	dREQ;
		1392
		1393	req->type = EIO_READDIR;
		1394	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1395
		1396	if (flags & EIO_READDIR_DENTS)
		1397	req->int1 |= EIO_READDIR_CUSTOM2;
		1398
		1399	req_set_path1 (req, pathname);
		1400
		1401	REQ_SEND;
		1402	}
		1403
		1404	void
		1405	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1406	PPCODE:
		1407	{
		1408	dREQ;
		1409
		1410	req->type = EIO_MKDIR;
		1411	req->int2 = mode;
		1412	req_set_path1 (req, pathname);
		1413
		1414	REQ_SEND;
		1415	}
		1416
		1417	void
1520	aio_unlink (pathname,callback=&PL_sv_undef)	1418	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	1419	ALIAS:
1524	aio_unlink = REQ_UNLINK	1420	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	1421	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	1422	aio_readdir = EIO_READDIR
1527	PPCODE:	1423	PPCODE:
1528	{	1424	{
1529	dREQ;	1425	dREQ;
1530		1426
1531	req->type = ix;	1427	req->type = ix;
1532	req->sv1 = newSVsv (pathname);	1428	req_set_path1 (req, pathname);
1533	req->ptr1 = SvPVbyte_nolen (req->sv1);
1534		1429
1535	REQ_SEND;	1430	REQ_SEND;
1536	}	1431	}
1537		1432
1538	void	1433	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1434	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	1435	ALIAS:
1544	aio_link = REQ_LINK	1436	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	1437	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	1438	aio_rename = EIO_RENAME
1547	PPCODE:	1439	PPCODE:
1548	{	1440	{
		1441	eio_wd wd2 = 0;
1549	dREQ;	1442	dREQ;
1550		1443
1551	req->type = ix;	1444	req->type = ix;
1552	req->fh = newSVsv (oldpath);	1445	req_set_path1 (req, oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);	1446	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1554	req->sv1 = newSVsv (newpath);	1447	req->int3 = (long)wd2;
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);
1556		1448
1557	REQ_SEND;	1449	REQ_SEND;
1558	}	1450	}
1559		1451
1560	void	1452	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1453	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562	SV8 * pathname
1563	SV * callback
1564	UV mode
1565	UV dev
1566	PPCODE:	1454	PPCODE:
1567	{	1455	{
1568	dREQ;	1456	dREQ;
1569		1457
1570	req->type = REQ_MKNOD;	1458	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	1459	req->int2 = (mode_t)mode;
1574	req->offs = dev;	1460	req->offs = dev;
		1461	req_set_path1 (req, pathname);
1575		1462
1576	REQ_SEND;	1463	REQ_SEND;
1577	}	1464	}
1578		1465
1579	void	1466	void
		1467	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1468	ALIAS:
		1469	aio_mtouch = EIO_MTOUCH
		1470	aio_msync = EIO_MSYNC
		1471	PPCODE:
		1472	{
		1473	STRLEN svlen;
		1474	char *svptr = SvPVbyte (data, svlen);
		1475	UV len = SvUV (length);
		1476
		1477	if (offset < 0)
		1478	offset += svlen;
		1479
		1480	if (offset < 0 || offset > svlen)
		1481	croak ("offset outside of scalar");
		1482
		1483	if (!SvOK (length) || len + offset > svlen)
		1484	len = svlen - offset;
		1485
		1486	{
		1487	dREQ;
		1488
		1489	req->type = ix;
		1490	req->sv2 = SvREFCNT_inc (data);
		1491	req->ptr2 = (char *)svptr + offset;
		1492	req->size = len;
		1493	req->int1 = flags;
		1494
		1495	REQ_SEND;
		1496	}
		1497	}
		1498
		1499	void
		1500	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1501	PPCODE:
		1502	{
		1503	STRLEN svlen;
		1504	char *svptr = SvPVbyte (data, svlen);
		1505	UV len = SvUV (length);
		1506
		1507	if (offset < 0)
		1508	offset += svlen;
		1509
		1510	if (offset < 0 || offset > svlen)
		1511	croak ("offset outside of scalar");
		1512
		1513	if (!SvOK (length) || len + offset > svlen)
		1514	len = svlen - offset;
		1515
		1516	{
		1517	dREQ;
		1518
		1519	req->type = EIO_MLOCK;
		1520	req->sv2 = SvREFCNT_inc (data);
		1521	req->ptr2 = (char *)svptr + offset;
		1522	req->size = len;
		1523
		1524	REQ_SEND;
		1525	}
		1526	}
		1527
		1528	void
		1529	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1530	PPCODE:
		1531	{
		1532	dREQ;
		1533
		1534	req->type = EIO_MLOCKALL;
		1535	req->int1 = flags;
		1536
		1537	REQ_SEND;
		1538	}
		1539
		1540	void
		1541	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1542	PPCODE:
		1543	{
		1544	int fd = s_fileno_croak (fh, 0);
		1545	dREQ;
		1546
		1547	req->type = EIO_CUSTOM;
		1548	req->sv1 = newSVsv (fh);
		1549	req->int1 = fd;
		1550
		1551	req->feed = fiemap;
		1552	#if HAVE_FIEMAP
		1553	/* keep our fingers crossed that the next two types are 64 bit */
		1554	req->offs = start;
		1555	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1556	req->int2 = flags;
		1557	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1558	#endif
		1559
		1560	REQ_SEND;
		1561	}
		1562
		1563	void
1580	aio_busy (delay,callback=&PL_sv_undef)	1564	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	1565	PPCODE:
1584	{	1566	{
1585	dREQ;	1567	dREQ;
1586		1568
1587	req->type = REQ_BUSY;	1569	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	1570	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		1571
1591	REQ_SEND;	1572	REQ_SEND;
1592	}	1573	}
1593		1574
1594	void	1575	void
1595	aio_group (callback=&PL_sv_undef)	1576	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$
1598	PPCODE:	1577	PPCODE:
1599	{	1578	{
1600	dREQ;	1579	dREQ;
1601		1580
1602	req->type = REQ_GROUP;	1581	req->type = EIO_GROUP;
1603		1582
1604	req_send (req);	1583	req_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1584	XPUSHs (req_sv (req, aio_grp_stash));
1606	}	1585	}
1607		1586
1608	void	1587	void
1609	aio_nop (callback=&PL_sv_undef)	1588	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	1589	ALIAS:
		1590	aio_nop = EIO_NOP
		1591	aio_sync = EIO_SYNC
1611	PPCODE:	1592	PPCODE:
1612	{	1593	{
1613	dREQ;	1594	dREQ;
1614		1595
1615	req->type = REQ_NOP;	1596	req->type = ix;
1616		1597
1617	REQ_SEND;	1598	REQ_SEND;
1618	}	1599	}
1619		1600
1620	int	1601	int
1621	aioreq_pri (int pri = 0)	1602	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$
1623	CODE:	1603	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	1604	RETVAL = next_pri;
1625	if (items > 0)	1605	if (items > 0)
1626	{	1606	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	1607	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	1608	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	1609	next_pri = pri;
1630	}	1610	}
1631	OUTPUT:	1611	OUTPUT:
1632	RETVAL	1612	RETVAL
1633		1613
1634	void	1614	void
1635	aioreq_nice (int nice = 0)	1615	aioreq_nice (int nice = 0)
1636	CODE:	1616	CODE:
1637	nice = next_pri - nice;	1617	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	1618	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	1619	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	1620	next_pri = nice;
1641		1621
1642	void	1622	void
1643	flush ()	1623	flush ()
1644	PROTOTYPE:
1645	CODE:	1624	CODE:
1646	while (nreqs)	1625	while (eio_nreqs ())
1647	{	1626	{
1648	poll_wait ();	1627	poll_wait ();
1649	poll_cb ();	1628	poll_cb ();
1650	}	1629	}
1651		1630
1652	int	1631	int
1653	poll()	1632	poll ()
1654	PROTOTYPE:
1655	CODE:	1633	CODE:
1656	poll_wait ();	1634	poll_wait ();
1657	RETVAL = poll_cb ();	1635	RETVAL = poll_cb ();
1658	OUTPUT:	1636	OUTPUT:
1659	RETVAL	1637	RETVAL
1660		1638
1661	int	1639	int
1662	poll_fileno()	1640	poll_fileno ()
1663	PROTOTYPE:
1664	CODE:	1641	CODE:
1665	RETVAL = respipe [0];	1642	RETVAL = s_epipe_fd (&respipe);
1666	OUTPUT:	1643	OUTPUT:
1667	RETVAL	1644	RETVAL
1668		1645
1669	int	1646	int
1670	poll_cb(...)	1647	poll_cb (...)
1671	PROTOTYPE:	1648	PROTOTYPE:
1672	CODE:	1649	CODE:
1673	RETVAL = poll_cb ();	1650	RETVAL = poll_cb ();
1674	OUTPUT:	1651	OUTPUT:
1675	RETVAL	1652	RETVAL
1676		1653
1677	void	1654	void
1678	poll_wait()	1655	poll_wait ()
1679	PROTOTYPE:
1680	CODE:	1656	CODE:
1681	poll_wait ();	1657	poll_wait ();
1682		1658
1683	int	1659	int
1684	nreqs()	1660	nreqs ()
1685	PROTOTYPE:
1686	CODE:	1661	CODE:
1687	RETVAL = nreqs;	1662	RETVAL = eio_nreqs ();
1688	OUTPUT:	1663	OUTPUT:
1689	RETVAL	1664	RETVAL
1690		1665
1691	int	1666	int
1692	nready()	1667	nready ()
1693	PROTOTYPE:
1694	CODE:	1668	CODE:
1695	RETVAL = get_nready ();	1669	RETVAL = eio_nready ();
1696	OUTPUT:	1670	OUTPUT:
1697	RETVAL	1671	RETVAL
1698		1672
1699	int	1673	int
1700	npending()	1674	npending ()
1701	PROTOTYPE:
1702	CODE:	1675	CODE:
1703	RETVAL = get_npending ();	1676	RETVAL = eio_npending ();
1704	OUTPUT:	1677	OUTPUT:
1705	RETVAL	1678	RETVAL
1706		1679
1707	int	1680	int
1708	nthreads()	1681	nthreads ()
1709	PROTOTYPE:
1710	CODE:	1682	CODE:
1711	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1683	RETVAL = eio_nthreads ();
1712	RETVAL = started;
1713	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714	OUTPUT:	1684	OUTPUT:
1715	RETVAL	1685	RETVAL
1716		1686
		1687	int
		1688	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1689	CODE:
		1690	RETVAL = posix_fadvise (fh, offset, length, advice);
		1691	OUTPUT:
		1692	RETVAL
		1693
		1694	IV
		1695	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1696	CODE:
		1697	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1698	OUTPUT:
		1699	RETVAL
		1700
		1701	void
		1702	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1703	PPCODE:
		1704	sv_unmagic (scalar, MMAP_MAGIC);
		1705	{
		1706	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1707	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1708	if (addr == (void *)-1)
		1709	XSRETURN_NO;
		1710
		1711	sv_force_normal (scalar);
		1712
		1713	/* we store the length in mg_obj, as namlen is I32 :/ */
		1714	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1715	->mg_obj = (SV *)length;
		1716
		1717	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1718
		1719	if (!(prot & PROT_WRITE))
		1720	SvREADONLY_on (scalar);
		1721
		1722	if (SvLEN (scalar))
		1723	Safefree (SvPVX (scalar));
		1724
		1725	SvPVX (scalar) = (char *)addr;
		1726	SvCUR_set (scalar, length);
		1727	SvLEN_set (scalar, 0);
		1728	SvPOK_only (scalar);
		1729
		1730	XSRETURN_YES;
		1731	}
		1732
		1733	void
		1734	munmap (SV *scalar)
		1735	CODE:
		1736	sv_unmagic (scalar, MMAP_MAGIC);
		1737
		1738	int
		1739	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1740	ALIAS:
		1741	mprotect = 1
		1742	CODE:
		1743	{
		1744	STRLEN svlen;
		1745	void *addr = SvPVbyte (scalar, svlen);
		1746	size_t len = SvUV (length);
		1747
		1748	if (offset < 0)
		1749	offset += svlen;
		1750
		1751	if (offset < 0 || offset > svlen)
		1752	croak ("offset outside of scalar");
		1753
		1754	if (!SvOK (length) || len + offset > svlen)
		1755	len = svlen - offset;
		1756
		1757	addr = (void *)(((intptr_t)addr) + offset);
		1758	eio_page_align (&addr, &len);
		1759
		1760	switch (ix)
		1761	{
		1762	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1763	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1764	}
		1765	}
		1766	OUTPUT:
		1767	RETVAL
		1768
		1769	int
		1770	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1771	CODE:
		1772	{
		1773	STRLEN svlen;
		1774	void *addr = SvPVbyte (scalar, svlen);
		1775	size_t len = SvUV (length);
		1776
		1777	if (offset < 0)
		1778	offset += svlen;
		1779
		1780	if (offset < 0 || offset > svlen)
		1781	croak ("offset outside of scalar");
		1782
		1783	if (!SvOK (length) || len + offset > svlen)
		1784	len = svlen - offset;
		1785
		1786	addr = (void *)(((intptr_t)addr) + offset);
		1787	eio_page_align (&addr, &len);
		1788	#if _POSIX_MEMLOCK_RANGE
		1789	RETVAL = munlock (addr, len);
		1790	#else
		1791	RETVAL = EIO_ENOSYS ();
		1792	#endif
		1793	}
		1794	OUTPUT:
		1795	RETVAL
		1796
		1797	int
		1798	munlockall ()
		1799	CODE:
		1800	#if _POSIX_MEMLOCK
		1801	munlockall ();
		1802	#else
		1803	RETVAL = EIO_ENOSYS ();
		1804	#endif
		1805	OUTPUT:
		1806	RETVAL
		1807
		1808	int
		1809	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1810	CODE:
		1811	{
		1812	#if HAVE_LINUX_SPLICE
		1813	loff_t off_in_, off_out_;
		1814	RETVAL = splice (
		1815	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1816	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1817	length, flags
		1818	);
		1819	#else
		1820	RETVAL = EIO_ENOSYS ();
		1821	#endif
		1822	}
		1823	OUTPUT:
		1824	RETVAL
		1825
		1826	int
		1827	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		1828	CODE:
		1829	#if HAVE_LINUX_SPLICE
		1830	RETVAL = tee (rfh, wfh, length, flags);
		1831	#else
		1832	RETVAL = EIO_ENOSYS ();
		1833	#endif
		1834	OUTPUT:
		1835	RETVAL
		1836
		1837	void _on_next_submit (SV *cb)
		1838	CODE:
		1839	SvREFCNT_dec (on_next_submit);
		1840	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1841
1717	PROTOTYPES: DISABLE	1842	PROTOTYPES: DISABLE
		1843
		1844	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1845
		1846	BOOT:
		1847	{
		1848	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1849	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1850	}
		1851
		1852	void
		1853	DESTROY (SV *self)
		1854	CODE:
		1855	{
		1856	aio_wd wd = SvAIO_WD (self);
		1857	#if HAVE_AT
		1858	{
		1859	SV *callback = &PL_sv_undef;
		1860	dREQ; /* clobbers next_pri :/ */
		1861	next_pri = req->pri; /* restore next_pri */
		1862	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1863	req->type = EIO_WD_CLOSE;
		1864	req->wd = wd;
		1865	REQ_SEND;
		1866	}
		1867	#else
		1868	eio_wd_close_sync (wd);
		1869	#endif
		1870	}
1718		1871
1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1872	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720		1873
1721	void	1874	void
1722	cancel (aio_req_ornot req)	1875	cancel (aio_req_ornot req)
1723	CODE:	1876	CODE:
1724	req_cancel (req);	1877	eio_cancel (req);
1725		1878
1726	void	1879	void
1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1880	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728	CODE:	1881	PPCODE:
		1882	{
		1883	if (GIMME_V != G_VOID)
		1884	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1885
		1886	if (items > 1)
		1887	{
		1888	SV *cb_cv =get_cb (callback);
		1889
1729	SvREFCNT_dec (req->callback);	1890	SvREFCNT_dec (req->callback);
1730	req->callback = newSVsv (callback);	1891	req->callback = SvREFCNT_inc (cb_cv);
		1892	}
		1893	}
1731		1894
1732	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1895	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733		1896
1734	void	1897	void
1735	add (aio_req grp, ...)	1898	add (aio_req grp, ...)
1736	PPCODE:	1899	PPCODE:
1737	{	1900	{
1738	int i;	1901	int i;
1739	aio_req req;
1740		1902
1741	if (grp->int1 == 2)	1903	if (grp->int1 == 2)
1742	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743		1905
1744	for (i = 1; i < items; ++i )	1906	for (i = 1; i < items; ++i )
1745	{	1907	{
		1908	aio_req req;
		1909
1746	if (GIMME_V != G_VOID)	1910	if (GIMME_V != G_VOID)
1747	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1911	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748		1912
1749	req = SvAIO_REQ (ST (i));	1913	req = SvAIO_REQ (ST (i));
1750		1914
1751	if (req)	1915	if (req)
1752	{	1916	eio_grp_add (grp, req);
1753	++grp->size;
1754	req->grp = grp;
1755
1756	req->grp_prev = 0;
1757	req->grp_next = grp->grp_first;
1758
1759	if (grp->grp_first)
1760	grp->grp_first->grp_prev = req;
1761
1762	grp->grp_first = req;
1763	}
1764	}	1917	}
1765	}	1918	}
1766		1919
1767	void	1920	void
1768	cancel_subs (aio_req_ornot req)	1921	cancel_subs (aio_req_ornot req)
…		…
1777	AV *av;	1930	AV *av;
1778		1931
1779	grp->errorno = errno;	1932	grp->errorno = errno;
1780		1933
1781	av = newAV ();	1934	av = newAV ();
		1935	av_extend (av, items - 1);
1782		1936
1783	for (i = 1; i < items; ++i )	1937	for (i = 1; i < items; ++i )
1784	av_push (av, newSVsv (ST (i)));	1938	av_push (av, newSVsv (ST (i)));
1785		1939
1786	SvREFCNT_dec (grp->sv1);	1940	SvREFCNT_dec (grp->sv1);
…		…
1793	grp->errorno = errorno;	1947	grp->errorno = errorno;
1794		1948
1795	void	1949	void
1796	limit (aio_req grp, int limit)	1950	limit (aio_req grp, int limit)
1797	CODE:	1951	CODE:
1798	grp->int2 = limit;	1952	eio_grp_limit (grp, limit);
1799	aio_grp_feed (grp);
1800		1953
1801	void	1954	void
1802	feed (aio_req grp, SV *callback=&PL_sv_undef)	1955	feed (aio_req grp, SV *callback=&PL_sv_undef)
1803	CODE:	1956	CODE:
1804	{	1957	{
1805	SvREFCNT_dec (grp->sv2);	1958	SvREFCNT_dec (grp->sv2);
1806	grp->sv2 = newSVsv (callback);	1959	grp->sv2 = newSVsv (callback);
		1960	grp->feed = aio_grp_feed;
1807		1961
1808	if (grp->int2 <= 0)	1962	if (grp->int2 <= 0)
1809	grp->int2 = 2;	1963	grp->int2 = 2;
1810		1964
1811	aio_grp_feed (grp);	1965	eio_grp_limit (grp, grp->int2);
1812	}	1966	}
1813		1967

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines