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/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 1.153 by root, Wed Jul 15 01:36:04 2009 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	/* perl namespace pollution */
34	# if __linux	21	#undef VERSION
35	# include <sys/sendfile.h>	22
36	# elif __freebsd	23	#ifdef _WIN32
37	# include <sys/socket.h>	24
38	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	26	# undef malloc
40	# include <sys/socket.h>	27	# undef free
41	# elif __solaris /* not yet */	28
42	# include <sys/sendfile.h>	29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
43	# else	61	#else
44	# error sendfile support requested but not available	62
45	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
46	#endif	70	#endif
47		71
48	/* number of seconds after which idle threads exit */	72	/* perl stupidly overrides readdir and maybe others */
49	#define IDLE_TIMEOUT 10	73	/* with thread-unsafe versions, imagine that :( */
		74	#undef readdir
		75	#undef opendir
		76	#undef closedir
50		77
51	/* used for struct dirent, AIX doesn't provide it */	78	#define EIO_STRUCT_STAT Stat_t
52	#ifndef NAME_MAX	79
53	# define NAME_MAX 4096	80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
54	#endif	89	#endif
55		90
56	#ifndef PTHREAD_STACK_MIN	91	/*****************************************************************************/
57	/* care for broken platforms, e.g. windows */	92
58	# define PTHREAD_STACK_MIN 16384	93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
59	#endif	97	#endif
60		98
61	#if __ia64	99	#define expect_false(expr) expect ((expr) != 0, 0)
62	# define STACKSIZE 65536	100	#define expect_true(expr) expect ((expr) != 0, 1)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68		101
69	/* wether word reads are potentially non-atomic.	102	/*****************************************************************************/
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
79	#endif
80		103
81	/* buffer size for various temporary buffers */	104	static HV *stash;
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 */	105	typedef SV SV8; /* byte-sv, used for argument-checking */
93		106	typedef int aio_rfd; /* read file desriptor */
94	enum {	107	typedef int aio_wfd; /* write file descriptor */
95	REQ_QUIT,
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	};
107		108
108	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
110		111
111	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;	113	SV *callback; \
116	SV *sv1, *sv2;	114	SV *sv1, *sv2; \
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;	115	STRLEN stroffset; \
123	int type;	116	SV *self;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127		117
128	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
129	unsigned char pri;
130		119
131	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
133	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
134		151
135	enum {	152	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};	154	};
140		155
		156	#include "libeio/eio.c"
		157
141	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
143		160
144	enum {	161	static SV *on_next_submit;
145	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	163	static int max_outstanding;
147		164
148	DEFAULT_PRI = 0,
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152
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];	165	static int respipe_osf [2];
		166	static s_epipe respipe;
222		167
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);	168	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	169	static void req_cancel (aio_req req);
		170
		171	static void want_poll (void)
		172	{
		173	/* write a dummy byte to the pipe so fh becomes ready */
		174	s_epipe_signal (&respipe);
		175	}
		176
		177	static void done_poll (void)
		178	{
		179	/* read any signals sent by the worker threads */
		180	s_epipe_drain (&respipe);
		181	}
328		182
329	/* must be called at most once */	183	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	184	static SV *req_sv (aio_req req, const char *klass)
331	{	185	{
332	if (!req->self)	186	if (!req->self)
…		…
350	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	205	}
352		206
353	static void aio_grp_feed (aio_req grp)	207	static void aio_grp_feed (aio_req grp)
354	{	208	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	209	if (grp->sv2 && SvOK (grp->sv2))
356	{	210	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	211	dSP;
362		212
363	ENTER;	213	ENTER;
364	SAVETMPS;	214	SAVETMPS;
365	PUSHMARK (SP);	215	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
367	PUTBACK;	217	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	219	SPAGAIN;
370	FREETMPS;	220	FREETMPS;
371	LEAVE;	221	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	}	222	}
382	}	223	}
383		224
384	static void aio_grp_dec (aio_req grp)	225	static void req_submit (eio_req *req)
385	{	226	{
386	--grp->size;	227	eio_submit (req);
387		228
388	/* call feeder, if applicable */	229	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	230	{
394	req_invoke (grp);	231	dSP;
395	req_free (grp);	232	SV *cb = sv_2mortal (on_next_submit);
		233
		234	on_next_submit = 0;
		235
		236	PUSHMARK (SP);
		237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
396	}	239	}
397	}	240	}
398		241
399	static void req_invoke (aio_req req)	242	static int req_invoke (eio_req *req)
400	{	243	{
401	dSP;	244	dSP;
402		245
403	if (req->flags & FLAG_SV1_RO_OFF)	246	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	247	SvREADONLY_off (req->sv2);
405		248
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	249	if (!EIO_CANCELLED (req) && req->callback)
407	{	250	{
408	ENTER;	251	ENTER;
409	SAVETMPS;	252	SAVETMPS;
410	PUSHMARK (SP);	253	PUSHMARK (SP);
411	EXTEND (SP, 1);	254	EXTEND (SP, 1);
412		255
413	switch (req->type)	256	switch (req->type)
414	{	257	{
415	case REQ_READDIR:	258	case EIO_READDIR:
416	{	259	{
417	SV *rv = &PL_sv_undef;	260	SV *rv = &PL_sv_undef;
418		261
419	if (req->result >= 0)	262	if (req->result >= 0)
420	{	263	{
421	int i;	264	int i;
422	char *buf = req->ptr2;	265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423	AV *av = newAV ();	267	AV *av = newAV ();
424		268
425	av_extend (av, req->result - 1);	269	av_extend (av, req->result - 1);
426		270
427	for (i = 0; i < req->result; ++i)	271	for (i = 0; i < req->result; ++i)
428	{	272	{
429	SV *sv = newSVpv (buf, 0);	273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430		276
		277	if (req->int1 & EIO_READDIR_CUSTOM2)
		278	{
		279	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		280	AV *avent = newAV ();
		281
		282	av_extend (avent, 2);
		283
		284	if (!sv_type [ent->type])
		285	{
		286	sv_type [ent->type] = newSViv (ent->type);
		287	SvREADONLY_on (sv_type [ent->type]);
		288	}
		289
		290	av_store (avent, 0, namesv);
		291	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		292	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		293
		294	av_store (av, i, newRV_noinc ((SV *)avent));
		295	}
		296	else
431	av_store (av, i, sv);	297	av_store (av, i, namesv);
		298
		299	++ent;
		300	}
		301	else
		302	{
		303	SV *name = newSVpv (names, 0);
		304	av_store (av, i, name);
432	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
		306	}
433	}	307	}
434		308
435	rv = sv_2mortal (newRV_noinc ((SV *)av));	309	rv = sv_2mortal (newRV_noinc ((SV *)av));
436	}	310	}
437		311
438	PUSHs (rv);	312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439	}	316	}
440	break;	317	break;
441		318
442	case REQ_OPEN:	319	case EIO_OPEN:
443	{	320	{
444	/* convert fd to fh */	321	/* convert fd to fh */
445	SV *fh;	322	SV *fh = &PL_sv_undef;
446		323
447	PUSHs (sv_2mortal (newSViv (req->result)));	324	if (req->result >= 0)
448	PUTBACK;	325	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	326	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	327	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		328	char sym [64];
		329	int symlen;
		330
		331	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		332	gv_init (gv, stash, sym, symlen, 0);
451		333
452	fh = SvREFCNT_inc (POPs);	334	symlen = snprintf (
		335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
453		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
454	PUSHMARK (SP);	346	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	347	}
457	break;	348	break;
458		349
459	case REQ_GROUP:	350	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	351	req->int1 = 2; /* mark group as finished */
461		352
462	if (req->sv1)	353	if (req->sv1)
463	{	354	{
464	int i;	355	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	359	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	360	PUSHs (*av_fetch (av, i, 0));
470	}	361	}
471	break;	362	break;
472		363
473	case REQ_NOP:	364	case EIO_NOP:
474	case REQ_BUSY:	365	case EIO_BUSY:
475	break;	366	break;
476		367
477	case REQ_READLINK:	368	case EIO_READLINK:
478	if (req->result > 0)	369	if (req->result > 0)
479	{	370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480	SvCUR_set (req->sv1, req->result);
481	*SvEND (req->sv1) = 0;
482	PUSHs (req->sv1);
483	}
484	break;	371	break;
485		372
486	case REQ_STAT:	373	case EIO_STAT:
487	case REQ_LSTAT:	374	case EIO_LSTAT:
488	case REQ_FSTAT:	375	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
490	PL_laststatval = req->result;	377	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);	378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	379	PUSHs (sv_2mortal (newSViv (req->result)));
493	break;	380	break;
494		381
495	case REQ_READ:	382	case EIO_READ:
		383	{
496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
497	*SvEND (req->sv1) = 0;	385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
498	PUSHs (sv_2mortal (newSViv (req->result)));	388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
499	break;	390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
500		396
501	default:	397	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	398	PUSHs (sv_2mortal (newSViv (req->result)));
503	break;	399	break;
504	}	400	}
505		401
506	errno = req->errorno;	402	errno = req->errorno;
507		403
508	PUTBACK;	404	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	SPAGAIN;	406	SPAGAIN;
511		407
512	FREETMPS;	408	FREETMPS;
513	LEAVE;	409	LEAVE;
		410
		411	PUTBACK;
514	}	412	}
515		413
516	if (req->grp)	414	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	}	415	}
536		416
537	static void req_free (aio_req req)	417	static void req_destroy (aio_req req)
538	{	418	{
539	if (req->self)	419	if (req->self)
540	{	420	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	421	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	422	SvREFCNT_dec (req->self);
543	}	423	}
544		424
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	425	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	426	SvREFCNT_dec (req->sv2);
548	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
549		428
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	429	Safefree (req);
554	}	430	}
555		431
556	static void req_cancel_subs (aio_req grp)	432	static void req_cancel_subs (aio_req grp)
557	{	433	{
558	aio_req sub;	434	aio_req sub;
559		435
560	if (grp->type != REQ_GROUP)	436	if (grp->type != EIO_GROUP)
561	return;	437	return;
562		438
563	SvREFCNT_dec (grp->sv2);	439	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	440	grp->sv2 = 0;
565		441
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	442	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	443	}
569		444
570	static void req_cancel (aio_req req)	445	static void
		446	create_respipe (void)
571	{	447	{
572	req->flags |= FLAG_CANCELLED;	448	if (s_epipe_renew (&respipe))
		449	croak ("unable to initialize result pipe");
573		450
574	req_cancel_subs (req);	451	respipe_osf [0] = S_TO_SOCKET (respipe.fd [0]);
		452	respipe_osf [1] = S_TO_SOCKET (respipe.fd [1]);
575	}	453	}
576		454
577	static void *aio_proc(void *arg);
578
579	static void start_thread (void)
580	{
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 ()	455	static void poll_wait (void)
683	{	456	{
684	fd_set rfd;
685
686	while (nreqs)	457	while (eio_nreqs ())
687	{	458	{
688	int size;	459	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	460
		461	X_LOCK (reslock);
690	size = res_queue.size;	462	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	463	X_UNLOCK (reslock);
692		464
693	if (size)	465	if (size)
694	return;	466	return;
695		467
696	maybe_start_thread ();	468	etp_maybe_start_thread ();
697		469
698	FD_ZERO(&rfd);	470	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	471	}
703	}	472	}
704		473
705	static int poll_cb ()	474	static int poll_cb (void)
706	{	475	{
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 (;;)	476	for (;;)
718	{	477	{
719	for (;;)	478	int res = eio_poll ();
720	{
721	maybe_start_thread ();
722		479
723	LOCK (reslock);	480	if (res > 0)
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{
728	--npending;
729
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	}
751	else
752	{
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	}
771
772	if (nreqs <= max_outstanding)
773	break;	481	croak (0);
		482
		483	if (!max_outstanding || max_outstanding > eio_nreqs ())
		484	return res;
774		485
775	poll_wait ();	486	poll_wait ();
776
777	++maxreqs;
778	}	487	}
779
780	return count;
781	}
782
783	static void create_pipe ()
784	{
785	if (pipe (respipe))
786	croak ("unable to initialize result pipe");
787
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	}	488	}
1204		489
1205	static void atfork_child (void)	490	static void atfork_child (void)
1206	{	491	{
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 ();	492	create_respipe ();
		493	}
1235		494
1236	atfork_parent ();	495	static SV *
		496	get_cb (SV *cb_sv)
		497	{
		498	SvGETMAGIC (cb_sv);
		499	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1237	}	500	}
1238		501
1239	#define dREQ \	502	#define dREQ \
		503	SV *cb_cv; \
1240	aio_req req; \	504	aio_req req; \
1241	int req_pri = next_pri; \	505	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \	506	next_pri = EIO_PRI_DEFAULT; \
1243	\	507	\
1244	if (SvOK (callback) && !SvROK (callback)) \	508	cb_cv = get_cb (callback); \
1245	croak ("callback must be undef or of reference type"); \
1246	\	509	\
1247	Newz (0, req, 1, aio_cb); \	510	Newz (0, req, 1, eio_req); \
1248	if (!req) \	511	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \	512	croak ("out of memory during eio_req allocation"); \
1250	\	513	\
1251	req->callback = newSVsv (callback); \	514	req->callback = SvREFCNT_inc (cb_cv); \
1252	req->pri = req_pri	515	req->pri = req_pri
1253		516
1254	#define REQ_SEND \	517	#define REQ_SEND \
		518	PUTBACK; \
1255	req_send (req); \	519	req_submit (req); \
		520	SPAGAIN; \
1256	\	521	\
1257	if (GIMME_V != G_VOID) \	522	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));	523	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259		524
1260	MODULE = IO::AIO PACKAGE = IO::AIO	525	MODULE = IO::AIO PACKAGE = IO::AIO
1261		526
1262	PROTOTYPES: ENABLE	527	PROTOTYPES: ENABLE
1263		528
1264	BOOT:	529	BOOT:
1265	{	530	{
		531	static const struct {
		532	const char *name;
		533	IV iv;
		534	} *civ, const_iv[] = {
		535	# define const_iv(name, value) { # name, (IV) value },
		536	# define const_eio(name) { # name, (IV) EIO_ ## name },
		537	const_iv (EXDEV , EXDEV)
		538	const_iv (ENOSYS , ENOSYS)
		539	const_iv (O_RDONLY, O_RDONLY)
		540	const_iv (O_WRONLY, O_WRONLY)
		541	const_iv (O_CREAT , O_CREAT)
		542	const_iv (O_TRUNC , O_TRUNC)
		543	#ifndef _WIN32
		544	const_iv (S_IFIFO , S_IFIFO)
		545	#endif
		546	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		547	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		548	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		549	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		550	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		551	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		552
		553	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		554	const_eio (SYNC_FILE_RANGE_WRITE)
		555	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		556
		557	const_eio (READDIR_DENTS)
		558	const_eio (READDIR_DIRS_FIRST)
		559	const_eio (READDIR_STAT_ORDER)
		560	const_eio (READDIR_FOUND_UNKNOWN)
		561
		562	const_eio (DT_UNKNOWN)
		563	const_eio (DT_FIFO)
		564	const_eio (DT_CHR)
		565	const_eio (DT_DIR)
		566	const_eio (DT_BLK)
		567	const_eio (DT_REG)
		568	const_eio (DT_LNK)
		569	const_eio (DT_SOCK)
		570	const_eio (DT_WHT)
		571	};
		572
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	573	stash = gv_stashpv ("IO::AIO", 1);
1267		574
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	575	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	576	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->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		577
1275	create_pipe ();	578	create_respipe ();
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	579
		580	if (eio_init (want_poll, done_poll) < 0)
		581	croak ("IO::AIO: unable to initialise eio library");
		582
		583	/* atfork child called in fifo order, so before eio's handler */
		584	X_THREAD_ATFORK (0, 0, atfork_child);
1277	}	585	}
1278		586
1279	void	587	void
1280	max_poll_reqs (int nreqs)	588	max_poll_reqs (int nreqs)
1281	PROTOTYPE: $	589	PROTOTYPE: $
1282	CODE:	590	CODE:
1283	max_poll_reqs = nreqs;	591	eio_set_max_poll_reqs (nreqs);
1284		592
1285	void	593	void
1286	max_poll_time (double nseconds)	594	max_poll_time (double nseconds)
1287	PROTOTYPE: $	595	PROTOTYPE: $
1288	CODE:	596	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	597	eio_set_max_poll_time (nseconds);
1290		598
1291	void	599	void
1292	min_parallel (int nthreads)	600	min_parallel (int nthreads)
1293	PROTOTYPE: $	601	PROTOTYPE: $
		602	CODE:
		603	eio_set_min_parallel (nthreads);
1294		604
1295	void	605	void
1296	max_parallel (int nthreads)	606	max_parallel (int nthreads)
1297	PROTOTYPE: $	607	PROTOTYPE: $
		608	CODE:
		609	eio_set_max_parallel (nthreads);
1298		610
1299	void	611	void
1300	max_idle (int nthreads)	612	max_idle (int nthreads)
1301	PROTOTYPE: $	613	PROTOTYPE: $
1302	CODE:	614	CODE:
1303	set_max_idle (nthreads);	615	eio_set_max_idle (nthreads);
1304		616
1305	int	617	void
1306	max_outstanding (int maxreqs)	618	max_outstanding (int maxreqs)
1307	PROTOTYPE: $	619	PROTOTYPE: $
1308	CODE:	620	CODE:
1309	RETVAL = max_outstanding;
1310	max_outstanding = maxreqs;	621	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		622
1314	void	623	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	624	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$	625	PROTOTYPE: $$$;$
1321	PPCODE:	626	PPCODE:
1322	{	627	{
1323	dREQ;	628	dREQ;
1324		629
1325	req->type = REQ_OPEN;	630	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	631	req->sv1 = newSVsv (pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);	632	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	633	req->int1 = flags;
1329	req->mode = mode;	634	req->int2 = mode;
1330		635
1331	REQ_SEND;	636	REQ_SEND;
1332	}	637	}
1333		638
1334	void	639	void
1335	aio_close (fh,callback=&PL_sv_undef)	640	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$	641	PROTOTYPE: $;$
1339	ALIAS:	642	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	643	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	644	aio_fdatasync = EIO_FDATASYNC
1343	PPCODE:	645	PPCODE:
1344	{	646	{
		647	int fd = s_fileno_croak (fh, 0);
1345	dREQ;	648	dREQ;
1346		649
1347	req->type = ix;	650	req->type = ix;
1348	req->fh = newSVsv (fh);	651	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	652	req->int1 = fd;
1350		653
1351	REQ_SEND (req);	654	REQ_SEND (req);
1352	}	655	}
1353		656
1354	void	657	void
		658	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		659	PROTOTYPE: $$$$;$
		660	PPCODE:
		661	{
		662	int fd = s_fileno_croak (fh, 0);
		663	dREQ;
		664
		665	req->type = EIO_SYNC_FILE_RANGE;
		666	req->sv1 = newSVsv (fh);
		667	req->int1 = fd;
		668	req->offs = offset;
		669	req->size = nbytes;
		670	req->int2 = flags;
		671
		672	REQ_SEND (req);
		673	}
		674
		675	void
		676	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		677	PROTOTYPE: $;$
		678	PPCODE:
		679	{
		680	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		681	int fd = s_fileno_croak (fh, 0);
		682	dREQ;
		683
		684	if (close_pipe < 0)
		685	{
		686	int pipefd [2];
		687
		688	if (pipe (pipefd) < 0
		689	|| close (pipefd [1]) < 0
		690	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		691	abort (); /*D*/
		692
		693	close_pipe = pipefd [0];
		694	}
		695
		696	req->type = EIO_DUP2;
		697	req->int1 = close_pipe;
		698	req->sv2 = newSVsv (fh);
		699	req->int2 = fd;
		700
		701	REQ_SEND (req);
		702	}
		703
		704	void
1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	705	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	706	ALIAS:
1363	aio_read = REQ_READ	707	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	708	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$	709	PROTOTYPE: $$$$$;$
1366	PPCODE:	710	PPCODE:
1367	{	711	{
1368	STRLEN svlen;	712	STRLEN svlen;
		713	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1369	char *svptr = SvPVbyte (data, svlen);	714	char *svptr = SvPVbyte (data, svlen);
1370		715	UV len = SvUV (length);
1371	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);
1373		716
1374	if (dataoffset < 0)	717	if (dataoffset < 0)
1375	dataoffset += svlen;	718	dataoffset += svlen;
1376		719
1377	if (dataoffset < 0 || dataoffset > svlen)	720	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	721	croak ("dataoffset outside of data scalar");
1379		722
1380	if (ix == REQ_WRITE)	723	if (ix == EIO_WRITE)
1381	{	724	{
1382	/* write: check length and adjust. */	725	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	726	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	727	len = svlen - dataoffset;
1385	}	728	}
1386	else	729	else
1387	{	730	{
1388	/* read: grow scalar as necessary */	731	/* read: check type and grow scalar as necessary */
		732	SvUPGRADE (data, SVt_PV);
1389	svptr = SvGROW (data, length + dataoffset);	733	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	734	}
1391
1392	if (length < 0)
1393	croak ("length must not be negative");
1394		735
1395	{	736	{
1396	dREQ;	737	dREQ;
1397		738
1398	req->type = ix;	739	req->type = ix;
1399	req->fh = newSVsv (fh);	740	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	741	req->int1 = fd;
1401	: IoOFP (sv_2io (fh)));	742	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->offs = offset;
1403	req->size = length;	743	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	744	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	745	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	746	req->stroffset = dataoffset;
1407		747
1408	if (!SvREADONLY (data))	748	if (!SvREADONLY (data))
1409	{	749	{
1410	SvREADONLY_on (data);	750	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	751	req->flags |= FLAG_SV2_RO_OFF;
1412	}	752	}
1413		753
1414	REQ_SEND;	754	REQ_SEND;
1415	}	755	}
1416	}	756	}
1417		757
1418	void	758	void
1419	aio_readlink (path,callback=&PL_sv_undef)	759	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1420	SV8 * path
1421	SV * callback
1422	PROTOTYPE: $$;$	760	PROTOTYPE: $$;$
1423	PPCODE:	761	PPCODE:
1424	{	762	{
1425	SV *data;	763	SV *data;
1426	dREQ;	764	dREQ;
1427		765
1428	data = newSV (NAME_MAX);
1429	SvPOK_on (data);
1430
1431	req->type = REQ_READLINK;	766	req->type = EIO_READLINK;
1432	req->fh = newSVsv (path);	767	req->sv1 = newSVsv (path);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);	768	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->sv1 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);
1436		769
1437	REQ_SEND;	770	REQ_SEND;
1438	}	771	}
1439		772
1440	void	773	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	774	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$	775	PROTOTYPE: $$$$;$
1448	PPCODE:	776	PPCODE:
1449	{	777	{
		778	int ifd = s_fileno_croak (in_fh , 0);
		779	int ofd = s_fileno_croak (out_fh, 1);
1450	dREQ;	780	dREQ;
1451		781
1452	req->type = REQ_SENDFILE;	782	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	783	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	784	req->int1 = ofd;
1455	req->sv2 = newSVsv (in_fh);	785	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	786	req->int2 = ifd;
1457	req->offs = in_offset;	787	req->offs = in_offset;
1458	req->size = length;	788	req->size = length;
1459		789
1460	REQ_SEND;	790	REQ_SEND;
1461	}	791	}
1462		792
1463	void	793	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	794	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$	795	PROTOTYPE: $$$;$
1470	PPCODE:	796	PPCODE:
1471	{	797	{
		798	int fd = s_fileno_croak (fh, 0);
1472	dREQ;	799	dREQ;
1473		800
1474	req->type = REQ_READAHEAD;	801	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	802	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	803	req->int1 = fd;
1477	req->offs = offset;	804	req->offs = offset;
1478	req->size = length;	805	req->size = length;
1479		806
1480	REQ_SEND;	807	REQ_SEND;
1481	}	808	}
1482		809
1483	void	810	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	811	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	812	ALIAS:
1488	aio_stat = REQ_STAT	813	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	814	aio_lstat = EIO_LSTAT
1490	PPCODE:	815	PPCODE:
1491	{	816	{
1492	dREQ;	817	dREQ;
1493		818
1494	req->ptr2 = malloc (sizeof (Stat_t));	819	req->sv1 = newSVsv (fh_or_path);
1495	if (!req->ptr2)
1496	{
1497	req_free (req);
1498	croak ("out of memory during aio_stat statdata allocation");
1499	}
1500		820
1501	req->flags |= FLAG_PTR2_FREE;	821	if (SvPOK (req->sv1))
1502
1503	if (SvPOK (fh_or_path))
1504	{	822	{
1505	req->type = ix;	823	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);	824	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}	825	}
1509	else	826	else
1510	{	827	{
1511	req->type = REQ_FSTAT;	828	req->type = EIO_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	829	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}	830	}
1515		831
1516	REQ_SEND;	832	REQ_SEND;
1517	}	833	}
1518		834
1519	void	835	void
		836	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		837	PPCODE:
		838	{
		839	dREQ;
		840
		841	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		842	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		843	req->sv1 = newSVsv (fh_or_path);
		844
		845	if (SvPOK (req->sv1))
		846	{
		847	req->type = EIO_UTIME;
		848	req->ptr1 = SvPVbyte_nolen (req->sv1);
		849	}
		850	else
		851	{
		852	req->type = EIO_FUTIME;
		853	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		854	}
		855
		856	REQ_SEND;
		857	}
		858
		859	void
		860	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		861	PPCODE:
		862	{
		863	dREQ;
		864
		865	req->sv1 = newSVsv (fh_or_path);
		866	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		867
		868	if (SvPOK (req->sv1))
		869	{
		870	req->type = EIO_TRUNCATE;
		871	req->ptr1 = SvPVbyte_nolen (req->sv1);
		872	}
		873	else
		874	{
		875	req->type = EIO_FTRUNCATE;
		876	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		877	}
		878
		879	REQ_SEND;
		880	}
		881
		882	void
		883	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		884	ALIAS:
		885	aio_chmod = EIO_CHMOD
		886	aio_mkdir = EIO_MKDIR
		887	PPCODE:
		888	{
		889	dREQ;
		890
		891	req->int2 = mode;
		892	req->sv1 = newSVsv (fh_or_path);
		893
		894	if (SvPOK (req->sv1))
		895	{
		896	req->type = ix;
		897	req->ptr1 = SvPVbyte_nolen (req->sv1);
		898	}
		899	else
		900	{
		901	req->type = EIO_FCHMOD;
		902	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		903	}
		904
		905	REQ_SEND;
		906	}
		907
		908	void
		909	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		910	PPCODE:
		911	{
		912	dREQ;
		913
		914	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		915	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		916	req->sv1 = newSVsv (fh_or_path);
		917
		918	if (SvPOK (req->sv1))
		919	{
		920	req->type = EIO_CHOWN;
		921	req->ptr1 = SvPVbyte_nolen (req->sv1);
		922	}
		923	else
		924	{
		925	req->type = EIO_FCHOWN;
		926	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		927	}
		928
		929	REQ_SEND;
		930	}
		931
		932	void
		933	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		934	PPCODE:
		935	{
		936	dREQ;
		937
		938	req->type = EIO_READDIR;
		939	req->sv1 = newSVsv (pathname);
		940	req->ptr1 = SvPVbyte_nolen (req->sv1);
		941	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		942
		943	if (flags & EIO_READDIR_DENTS)
		944	req->int1 |= EIO_READDIR_CUSTOM2;
		945
		946	REQ_SEND;
		947	}
		948
		949	void
1520	aio_unlink (pathname,callback=&PL_sv_undef)	950	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	951	ALIAS:
1524	aio_unlink = REQ_UNLINK	952	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	953	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	954	aio_readdir = EIO_READDIR
1527	PPCODE:	955	PPCODE:
1528	{	956	{
1529	dREQ;	957	dREQ;
1530		958
1531	req->type = ix;	959	req->type = ix;
…		…
1534		962
1535	REQ_SEND;	963	REQ_SEND;
1536	}	964	}
1537		965
1538	void	966	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	967	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	968	ALIAS:
1544	aio_link = REQ_LINK	969	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	970	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	971	aio_rename = EIO_RENAME
1547	PPCODE:	972	PPCODE:
1548	{	973	{
1549	dREQ;	974	dREQ;
1550		975
1551	req->type = ix;	976	req->type = ix;
1552	req->fh = newSVsv (oldpath);	977	req->sv1 = newSVsv (oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1554	req->sv1 = newSVsv (newpath);
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);	978	req->ptr1 = SvPVbyte_nolen (req->sv1);
		979	req->sv2 = newSVsv (newpath);
		980	req->ptr2 = SvPVbyte_nolen (req->sv2);
1556		981
1557	REQ_SEND;	982	REQ_SEND;
1558	}	983	}
1559		984
1560	void	985	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	986	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:	987	PPCODE:
1567	{	988	{
1568	dREQ;	989	dREQ;
1569		990
1570	req->type = REQ_MKNOD;	991	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);	992	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	993	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	994	req->int2 = (mode_t)mode;
1574	req->offs = dev;	995	req->offs = dev;
1575		996
1576	REQ_SEND;	997	REQ_SEND;
1577	}	998	}
1578		999
1579	void	1000	void
1580	aio_busy (delay,callback=&PL_sv_undef)	1001	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	1002	PPCODE:
1584	{	1003	{
1585	dREQ;	1004	dREQ;
1586		1005
1587	req->type = REQ_BUSY;	1006	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	1007	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		1008
1591	REQ_SEND;	1009	REQ_SEND;
1592	}	1010	}
1593		1011
1594	void	1012	void
1595	aio_group (callback=&PL_sv_undef)	1013	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$	1014	PROTOTYPE: ;$
1598	PPCODE:	1015	PPCODE:
1599	{	1016	{
1600	dREQ;	1017	dREQ;
1601		1018
1602	req->type = REQ_GROUP;	1019	req->type = EIO_GROUP;
1603		1020
1604	req_send (req);	1021	req_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1022	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1606	}	1023	}
1607		1024
1608	void	1025	void
1609	aio_nop (callback=&PL_sv_undef)	1026	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	1027	ALIAS:
		1028	aio_nop = EIO_NOP
		1029	aio_sync = EIO_SYNC
1611	PPCODE:	1030	PPCODE:
1612	{	1031	{
1613	dREQ;	1032	dREQ;
1614		1033
1615	req->type = REQ_NOP;	1034	req->type = ix;
1616		1035
1617	REQ_SEND;	1036	REQ_SEND;
1618	}	1037	}
1619		1038
1620	int	1039	int
1621	aioreq_pri (int pri = 0)	1040	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$	1041	PROTOTYPE: ;$
1623	CODE:	1042	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	1043	RETVAL = next_pri;
1625	if (items > 0)	1044	if (items > 0)
1626	{	1045	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	1046	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	1047	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	1048	next_pri = pri;
1630	}	1049	}
1631	OUTPUT:	1050	OUTPUT:
1632	RETVAL	1051	RETVAL
1633		1052
1634	void	1053	void
1635	aioreq_nice (int nice = 0)	1054	aioreq_nice (int nice = 0)
1636	CODE:	1055	CODE:
1637	nice = next_pri - nice;	1056	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	1057	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	1058	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	1059	next_pri = nice;
1641		1060
1642	void	1061	void
1643	flush ()	1062	flush ()
1644	PROTOTYPE:	1063	PROTOTYPE:
1645	CODE:	1064	CODE:
1646	while (nreqs)	1065	while (eio_nreqs ())
1647	{	1066	{
1648	poll_wait ();	1067	poll_wait ();
1649	poll_cb ();	1068	poll_cb ();
1650	}	1069	}
1651		1070
…		…
1660		1079
1661	int	1080	int
1662	poll_fileno()	1081	poll_fileno()
1663	PROTOTYPE:	1082	PROTOTYPE:
1664	CODE:	1083	CODE:
1665	RETVAL = respipe [0];	1084	RETVAL = s_epipe_fd (&respipe);
1666	OUTPUT:	1085	OUTPUT:
1667	RETVAL	1086	RETVAL
1668		1087
1669	int	1088	int
1670	poll_cb(...)	1089	poll_cb(...)
…		…
1682		1101
1683	int	1102	int
1684	nreqs()	1103	nreqs()
1685	PROTOTYPE:	1104	PROTOTYPE:
1686	CODE:	1105	CODE:
1687	RETVAL = nreqs;	1106	RETVAL = eio_nreqs ();
1688	OUTPUT:	1107	OUTPUT:
1689	RETVAL	1108	RETVAL
1690		1109
1691	int	1110	int
1692	nready()	1111	nready()
1693	PROTOTYPE:	1112	PROTOTYPE:
1694	CODE:	1113	CODE:
1695	RETVAL = get_nready ();	1114	RETVAL = eio_nready ();
1696	OUTPUT:	1115	OUTPUT:
1697	RETVAL	1116	RETVAL
1698		1117
1699	int	1118	int
1700	npending()	1119	npending()
1701	PROTOTYPE:	1120	PROTOTYPE:
1702	CODE:	1121	CODE:
1703	RETVAL = get_npending ();	1122	RETVAL = eio_npending ();
1704	OUTPUT:	1123	OUTPUT:
1705	RETVAL	1124	RETVAL
1706		1125
1707	int	1126	int
1708	nthreads()	1127	nthreads()
1709	PROTOTYPE:	1128	PROTOTYPE:
1710	CODE:	1129	CODE:
1711	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1130	RETVAL = eio_nthreads ();
1712	RETVAL = started;
1713	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714	OUTPUT:	1131	OUTPUT:
1715	RETVAL	1132	RETVAL
1716		1133
		1134	int
		1135	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1136	PROTOTYPE: $$$$
		1137	CODE:
		1138	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1139	RETVAL = posix_fadvise (fh, offset, length, advice);
		1140	#else
		1141	RETVAL = errno = ENOSYS;
		1142	#endif
		1143	OUTPUT:
		1144	RETVAL
		1145
		1146	ssize_t
		1147	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1148	PROTOTYPE: $$$$
		1149	CODE:
		1150	eio_sendfile_sync (ofh, ifh, offset, count);
		1151
		1152	void _on_next_submit (SV *cb)
		1153	CODE:
		1154	SvREFCNT_dec (on_next_submit);
		1155	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1156
1717	PROTOTYPES: DISABLE	1157	PROTOTYPES: DISABLE
1718		1158
1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1159	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720		1160
1721	void	1161	void
1722	cancel (aio_req_ornot req)	1162	cancel (aio_req_ornot req)
1723	CODE:	1163	CODE:
1724	req_cancel (req);	1164	eio_cancel (req);
1725		1165
1726	void	1166	void
1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1167	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728	CODE:	1168	PPCODE:
		1169	{
		1170	if (GIMME_V != G_VOID)
		1171	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1172
		1173	if (items > 1)
		1174	{
		1175	SV *cb_cv =get_cb (callback);
		1176
1729	SvREFCNT_dec (req->callback);	1177	SvREFCNT_dec (req->callback);
1730	req->callback = newSVsv (callback);	1178	req->callback = SvREFCNT_inc (cb_cv);
		1179	}
		1180	}
1731		1181
1732	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1182	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733		1183
1734	void	1184	void
1735	add (aio_req grp, ...)	1185	add (aio_req grp, ...)
1736	PPCODE:	1186	PPCODE:
1737	{	1187	{
1738	int i;	1188	int i;
1739	aio_req req;
1740		1189
1741	if (grp->int1 == 2)	1190	if (grp->int1 == 2)
1742	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1191	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743		1192
1744	for (i = 1; i < items; ++i )	1193	for (i = 1; i < items; ++i )
1745	{	1194	{
		1195	aio_req req;
		1196
1746	if (GIMME_V != G_VOID)	1197	if (GIMME_V != G_VOID)
1747	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1198	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748		1199
1749	req = SvAIO_REQ (ST (i));	1200	req = SvAIO_REQ (ST (i));
1750		1201
1751	if (req)	1202	if (req)
1752	{	1203	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	}	1204	}
1765	}	1205	}
1766		1206
1767	void	1207	void
1768	cancel_subs (aio_req_ornot req)	1208	cancel_subs (aio_req_ornot req)
…		…
1777	AV *av;	1217	AV *av;
1778		1218
1779	grp->errorno = errno;	1219	grp->errorno = errno;
1780		1220
1781	av = newAV ();	1221	av = newAV ();
		1222	av_extend (av, items - 1);
1782		1223
1783	for (i = 1; i < items; ++i )	1224	for (i = 1; i < items; ++i )
1784	av_push (av, newSVsv (ST (i)));	1225	av_push (av, newSVsv (ST (i)));
1785		1226
1786	SvREFCNT_dec (grp->sv1);	1227	SvREFCNT_dec (grp->sv1);
…		…
1793	grp->errorno = errorno;	1234	grp->errorno = errorno;
1794		1235
1795	void	1236	void
1796	limit (aio_req grp, int limit)	1237	limit (aio_req grp, int limit)
1797	CODE:	1238	CODE:
1798	grp->int2 = limit;	1239	eio_grp_limit (grp, limit);
1799	aio_grp_feed (grp);
1800		1240
1801	void	1241	void
1802	feed (aio_req grp, SV *callback=&PL_sv_undef)	1242	feed (aio_req grp, SV *callback=&PL_sv_undef)
1803	CODE:	1243	CODE:
1804	{	1244	{
1805	SvREFCNT_dec (grp->sv2);	1245	SvREFCNT_dec (grp->sv2);
1806	grp->sv2 = newSVsv (callback);	1246	grp->sv2 = newSVsv (callback);
		1247	grp->feed = aio_grp_feed;
1807		1248
1808	if (grp->int2 <= 0)	1249	if (grp->int2 <= 0)
1809	grp->int2 = 2;	1250	grp->int2 = 2;
1810		1251
1811	aio_grp_feed (grp);	1252	eio_grp_limit (grp, grp->int2);
1812	}	1253	}
1813		1254

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