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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.85 by root, Sat Oct 28 23:32:29 2006 UTC vs.
Revision 1.151 by root, Tue Jul 14 00:13:36 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	105	typedef SV SV8; /* byte-sv, used for argument-checking */
83		106	typedef int aio_rfd; /* read file desriptor */
84	#define dBUF \	107	typedef int aio_wfd; /* write file descriptor */
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	enum {
93	REQ_QUIT,
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};
105		108
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		111
109	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;	113	SV *callback; \
114	SV *fh, *fh2;	114	SV *sv1, *sv2; \
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;	115	STRLEN stroffset; \
122	int type;	116	SV *self;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126		117
127	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
128	unsigned char pri;
129		119
130	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
132	} 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)
133		151
134	enum {	152	enum {
135	FLAG_CANCELLED = 0x01,	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
136	};	154	};
137		155
		156	#include "libeio/eio.c"
		157
138	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
140		160
141	enum {	161	static SV *on_next_submit;
142	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	163	static int max_outstanding;
144		164
145	DEFAULT_PRI = 0,	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		166
150	#define AIO_TICKS ((1000000 + 1023) >> 10)
151
152	static unsigned int max_poll_time = 0;
153	static unsigned int max_poll_reqs = 0;
154
155	/* calculcate time difference in ~1/AIO_TICKS of a second */
156	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
157	{
158	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
159	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
160	}
161
162	static int next_pri = DEFAULT_PRI + PRI_BIAS;
163
164	static unsigned int started, idle, wanted;
165
166	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
167	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
168	#else
169	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
170	#endif
171
172	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
173	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
174
175	/* worker threads management */
176	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
177
178	typedef struct worker {
179	/* locked by wrklock */
180	struct worker *prev, *next;
181
182	pthread_t tid;
183
184	/* locked by reslock, reqlock or wrklock */
185	aio_req req; /* currently processed request */
186	void *dbuf;
187	DIR *dirp;
188	} worker;
189
190	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
191
192	static void worker_clear (worker *wrk)
193	{
194	if (wrk->dirp)
195	{
196	closedir (wrk->dirp);
197	wrk->dirp = 0;
198	}
199
200	if (wrk->dbuf)
201	{
202	free (wrk->dbuf);
203	wrk->dbuf = 0;
204	}
205	}
206
207	static void worker_free (worker *wrk)
208	{
209	wrk->next->prev = wrk->prev;
210	wrk->prev->next = wrk->next;
211
212	free (wrk);
213	}
214
215	static volatile unsigned int nreqs, nready, npending;
216	static volatile unsigned int max_idle = 4;
217	static volatile unsigned int max_outstanding = 0xffffffff;
218	static int respipe [2];
219
220	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
221	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
222	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
223
224	#if WORDACCESS_UNSAFE
225
226	static unsigned int get_nready ()
227	{
228	unsigned int retval;
229
230	LOCK (reqlock);
231	retval = nready;
232	UNLOCK (reqlock);
233
234	return retval;
235	}
236
237	static unsigned int get_npending ()
238	{
239	unsigned int retval;
240
241	LOCK (reslock);
242	retval = npending;
243	UNLOCK (reslock);
244
245	return retval;
246	}
247
248	static unsigned int get_nthreads ()
249	{
250	unsigned int retval;
251
252	LOCK (wrklock);
253	retval = started;
254	UNLOCK (wrklock);
255
256	return retval;
257	}
258
259	#else
260
261	# define get_nready() nready
262	# define get_npending() npending
263	# define get_nthreads() started
264
265	#endif
266
267	/*
268	* a somewhat faster data structure might be nice, but
269	* with 8 priorities this actually needs <20 insns
270	* per shift, the most expensive operation.
271	*/
272	typedef struct {
273	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
274	int size;
275	} reqq;
276
277	static reqq req_queue;
278	static reqq res_queue;
279
280	int reqq_push (reqq *q, aio_req req)
281	{
282	int pri = req->pri;
283	req->next = 0;
284
285	if (q->qe[pri])
286	{
287	q->qe[pri]->next = req;
288	q->qe[pri] = req;
289	}
290	else
291	q->qe[pri] = q->qs[pri] = req;
292
293	return q->size++;
294	}
295
296	aio_req reqq_shift (reqq *q)
297	{
298	int pri;
299
300	if (!q->size)
301	return 0;
302
303	--q->size;
304
305	for (pri = NUM_PRI; pri--; )
306	{
307	aio_req req = q->qs[pri];
308
309	if (req)
310	{
311	if (!(q->qs[pri] = req->next))
312	q->qe[pri] = 0;
313
314	return req;
315	}
316	}
317
318	abort ();
319	}
320
321	static int poll_cb ();
322	static void req_invoke (aio_req req);
323	static void req_free (aio_req req);	167	static void req_destroy (aio_req req);
324	static void req_cancel (aio_req req);	168	static void req_cancel (aio_req req);
		169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	char buf [4];
		180	while (respipe_read (respipe [0], buf, 4) == 4)
		181	;
		182	}
325		183
326	/* must be called at most once */	184	/* must be called at most once */
327	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
328	{	186	{
329	if (!req->self)	187	if (!req->self)
…		…
347	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
348	}	206	}
349		207
350	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
351	{	209	{
352	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	210	if (grp->sv2 && SvOK (grp->sv2))
353	{	211	{
354	int old_len = grp->length;
355
356	if (grp->fh2 && SvOK (grp->fh2))
357	{
358	dSP;	212	dSP;
359		213
360	ENTER;	214	ENTER;
361	SAVETMPS;	215	SAVETMPS;
362	PUSHMARK (SP);	216	PUSHMARK (SP);
363	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
364	PUTBACK;	218	PUTBACK;
365	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
366	SPAGAIN;	220	SPAGAIN;
367	FREETMPS;	221	FREETMPS;
368	LEAVE;	222	LEAVE;
369	}
370
371	/* stop if no progress has been made */
372	if (old_len == grp->length)
373	{
374	SvREFCNT_dec (grp->fh2);
375	grp->fh2 = 0;
376	break;
377	}
378	}	223	}
379	}	224	}
380		225
381	static void aio_grp_dec (aio_req grp)	226	static void req_submit (eio_req *req)
382	{	227	{
383	--grp->length;	228	eio_submit (req);
384		229
385	/* call feeder, if applicable */	230	if (expect_false (on_next_submit))
386	aio_grp_feed (grp);
387
388	/* finish, if done */
389	if (!grp->length && grp->fd)
390	{	231	{
391	req_invoke (grp);	232	dSP;
392	req_free (grp);	233	SV *cb = sv_2mortal (on_next_submit);
		234
		235	on_next_submit = 0;
		236
		237	PUSHMARK (SP);
		238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
393	}	240	}
394	}	241	}
395		242
396	static void req_invoke (aio_req req)	243	static int req_invoke (eio_req *req)
397	{	244	{
398	dSP;	245	dSP;
399		246
400	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	247	if (req->flags & FLAG_SV2_RO_OFF)
		248	SvREADONLY_off (req->sv2);
		249
		250	if (!EIO_CANCELLED (req) && req->callback)
401	{	251	{
402	ENTER;	252	ENTER;
403	SAVETMPS;	253	SAVETMPS;
404	PUSHMARK (SP);	254	PUSHMARK (SP);
405	EXTEND (SP, 1);	255	EXTEND (SP, 1);
406		256
407	switch (req->type)	257	switch (req->type)
408	{	258	{
409	case REQ_READDIR:	259	case EIO_READDIR:
410	{	260	{
411	SV *rv = &PL_sv_undef;	261	SV *rv = &PL_sv_undef;
412		262
413	if (req->result >= 0)	263	if (req->result >= 0)
414	{	264	{
415	int i;	265	int i;
416	char *buf = req->data2ptr;	266	char *names = (char *)req->ptr2;
		267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
417	AV *av = newAV ();	268	AV *av = newAV ();
418		269
419	av_extend (av, req->result - 1);	270	av_extend (av, req->result - 1);
420		271
421	for (i = 0; i < req->result; ++i)	272	for (i = 0; i < req->result; ++i)
422	{	273	{
423	SV *sv = newSVpv (buf, 0);	274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
424		277
		278	if (req->int1 & EIO_READDIR_CUSTOM2)
		279	{
		280	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		281	AV *avent = newAV ();
		282
		283	av_extend (avent, 2);
		284
		285	if (!sv_type [ent->type])
		286	{
		287	sv_type [ent->type] = newSViv (ent->type);
		288	SvREADONLY_on (sv_type [ent->type]);
		289	}
		290
		291	av_store (avent, 0, namesv);
		292	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		293	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		294
		295	av_store (av, i, newRV_noinc ((SV *)avent));
		296	}
		297	else
425	av_store (av, i, sv);	298	av_store (av, i, namesv);
		299
		300	++ent;
		301	}
		302	else
		303	{
		304	SV *name = newSVpv (names, 0);
		305	av_store (av, i, name);
426	buf += SvCUR (sv) + 1;	306	names += SvCUR (name) + 1;
		307	}
427	}	308	}
428		309
429	rv = sv_2mortal (newRV_noinc ((SV *)av));	310	rv = sv_2mortal (newRV_noinc ((SV *)av));
430	}	311	}
431		312
432	PUSHs (rv);	313	PUSHs (rv);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM1)
		316	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
433	}	317	}
434	break;	318	break;
435		319
436	case REQ_OPEN:	320	case EIO_OPEN:
437	{	321	{
438	/* convert fd to fh */	322	/* convert fd to fh */
439	SV *fh;	323	SV *fh = &PL_sv_undef;
440		324
441	PUSHs (sv_2mortal (newSViv (req->result)));	325	if (req->result >= 0)
442	PUTBACK;	326	{
443	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	327	GV *gv = (GV *)sv_newmortal ();
444	SPAGAIN;	328	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		329	char sym [64];
		330	int symlen;
		331
		332	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		333	gv_init (gv, stash, sym, symlen, 0);
445		334
446	fh = SvREFCNT_inc (POPs);	335	symlen = snprintf (
		336	sym,
		337	sizeof (sym),
		338	"%s&=%d",
		339	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		340	(int)req->result
		341	);
447		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
448	PUSHMARK (SP);	347	PUSHs (fh);
449	XPUSHs (sv_2mortal (fh));
450	}	348	}
451	break;	349	break;
452		350
453	case REQ_GROUP:	351	case EIO_GROUP:
454	req->fd = 2; /* mark group as finished */	352	req->int1 = 2; /* mark group as finished */
455		353
456	if (req->data)	354	if (req->sv1)
457	{	355	{
458	int i;	356	int i;
459	AV *av = (AV *)req->data;	357	AV *av = (AV *)req->sv1;
460		358
461	EXTEND (SP, AvFILL (av) + 1);	359	EXTEND (SP, AvFILL (av) + 1);
462	for (i = 0; i <= AvFILL (av); ++i)	360	for (i = 0; i <= AvFILL (av); ++i)
463	PUSHs (*av_fetch (av, i, 0));	361	PUSHs (*av_fetch (av, i, 0));
464	}	362	}
465	break;	363	break;
466		364
467	case REQ_NOP:	365	case EIO_NOP:
468	case REQ_BUSY:	366	case EIO_BUSY:
469	break;	367	break;
		368
		369	case EIO_READLINK:
		370	if (req->result > 0)
		371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		372	break;
		373
		374	case EIO_STAT:
		375	case EIO_LSTAT:
		376	case EIO_FSTAT:
		377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		378	PL_laststatval = req->result;
		379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		380	PUSHs (sv_2mortal (newSViv (req->result)));
		381	break;
		382
		383	case EIO_READ:
		384	{
		385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
		391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
470		397
471	default:	398	default:
472	PUSHs (sv_2mortal (newSViv (req->result)));	399	PUSHs (sv_2mortal (newSViv (req->result)));
473	break;	400	break;
474	}	401	}
475		402
476	errno = req->errorno;	403	errno = req->errorno;
477		404
478	PUTBACK;	405	PUTBACK;
479	call_sv (req->callback, G_VOID | G_EVAL);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
480	SPAGAIN;	407	SPAGAIN;
481		408
482	FREETMPS;	409	FREETMPS;
483	LEAVE;	410	LEAVE;
		411
		412	PUTBACK;
484	}	413	}
485		414
486	if (req->grp)	415	return !!SvTRUE (ERRSV);
487	{
488	aio_req grp = req->grp;
489
490	/* unlink request */
491	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
492	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
493
494	if (grp->grp_first == req)
495	grp->grp_first = req->grp_next;
496
497	aio_grp_dec (grp);
498	}
499
500	if (SvTRUE (ERRSV))
501	{
502	req_free (req);
503	croak (0);
504	}
505	}	416	}
506		417
507	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
508	{	419	{
509	if (req->self)	420	if (req->self)
510	{	421	{
511	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
512	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
513	}	424	}
514		425
515	SvREFCNT_dec (req->data);
516	SvREFCNT_dec (req->fh);	426	SvREFCNT_dec (req->sv1);
517	SvREFCNT_dec (req->fh2);	427	SvREFCNT_dec (req->sv2);
518	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
519	Safefree (req->statdata);
520
521	if (req->type == REQ_READDIR)
522	free (req->data2ptr);
523		429
524	Safefree (req);	430	Safefree (req);
525	}	431	}
526		432
527	static void req_cancel_subs (aio_req grp)	433	static void req_cancel_subs (aio_req grp)
528	{	434	{
529	aio_req sub;	435	aio_req sub;
530		436
531	if (grp->type != REQ_GROUP)	437	if (grp->type != EIO_GROUP)
532	return;	438	return;
533		439
534	SvREFCNT_dec (grp->fh2);	440	SvREFCNT_dec (grp->sv2);
535	grp->fh2 = 0;	441	grp->sv2 = 0;
536		442
537	for (sub = grp->grp_first; sub; sub = sub->grp_next)	443	eio_grp_cancel (grp);
538	req_cancel (sub);
539	}	444	}
540		445
541	static void req_cancel (aio_req req)	446	#ifdef USE_SOCKETS_AS_HANDLES
542	{	447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
543	req->flags |= FLAG_CANCELLED;	448	#else
544		449	# define TO_SOCKET(x) (x)
545	req_cancel_subs (req);
546	}
547
548	static void *aio_proc(void *arg);
549
550	static void start_thread (void)
551	{
552	sigset_t fullsigset, oldsigset;
553	pthread_attr_t attr;
554
555	worker *wrk = calloc (1, sizeof (worker));
556
557	if (!wrk)
558	croak ("unable to allocate worker thread data");
559
560	pthread_attr_init (&attr);
561	pthread_attr_setstacksize (&attr, STACKSIZE);
562	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
563	#ifdef PTHREAD_SCOPE_PROCESS
564	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
565	#endif	450	#endif
566		451
567	sigfillset (&fullsigset);	452	static void
		453	create_respipe (void)
		454	{
		455	int old_readfd = respipe [0];
568		456
569	LOCK (wrklock);	457	if (respipe [1] >= 0)
570	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	458	respipe_close (TO_SOCKET (respipe [1]));
571		459
572	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	460	#ifdef _WIN32
		461	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		462	#else
		463	if (pipe (respipe))
		464	#endif
		465	croak ("unable to initialize result pipe");
		466
		467	if (old_readfd >= 0)
573	{	468	{
574	wrk->prev = &wrk_first;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
575	wrk->next = wrk_first.next;	470	croak ("unable to initialize result pipe(2)");
576	wrk_first.next->prev = wrk;	471
577	wrk_first.next = wrk;	472	respipe_close (respipe [0]);
578	++started;	473	respipe [0] = old_readfd;
579	}	474	}
580	else
581	free (wrk);
582		475
583	sigprocmask (SIG_SETMASK, &oldsigset, 0);	476	#ifdef _WIN32
584	UNLOCK (wrklock);	477	int arg = 1;
585	}	478	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		479	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		480	#else
		481	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		482	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		483	#endif
		484	croak ("unable to initialize result pipe(3)");
586		485
587	static void maybe_start_thread ()	486	respipe_osf [0] = TO_SOCKET (respipe [0]);
588	{	487	respipe_osf [1] = TO_SOCKET (respipe [1]);
589	if (get_nthreads () >= wanted)
590	return;
591
592	/* todo: maybe use idle here, but might be less exact */
593	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
594	return;
595
596	start_thread ();
597	}	488	}
598		489
599	static void req_send (aio_req req)
600	{
601	++nreqs;
602
603	LOCK (reqlock);
604	++nready;
605	reqq_push (&req_queue, req);
606	pthread_cond_signal (&reqwait);
607	UNLOCK (reqlock);
608
609	maybe_start_thread ();
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	LOCK (reqlock);
622	reqq_push (&req_queue, req);
623	pthread_cond_signal (&reqwait);
624	UNLOCK (reqlock);
625
626	LOCK (wrklock);
627	--started;
628	UNLOCK (wrklock);
629	}
630
631	static void set_max_idle (int nthreads)
632	{
633	if (WORDACCESS_UNSAFE) LOCK (reqlock);
634	max_idle = nthreads <= 0 ? 1 : nthreads;
635	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
636	}
637
638	static void min_parallel (int nthreads)
639	{
640	if (wanted < nthreads)
641	wanted = nthreads;
642	}
643
644	static void max_parallel (int nthreads)
645	{
646	if (wanted > nthreads)
647	wanted = nthreads;
648
649	while (started > wanted)
650	end_thread ();
651	}
652
653	static void poll_wait ()	490	static void poll_wait (void)
654	{	491	{
655	fd_set rfd;	492	fd_set rfd;
656		493
657	while (nreqs)	494	while (eio_nreqs ())
658	{	495	{
659	int size;	496	int size;
660	if (WORDACCESS_UNSAFE) LOCK (reslock);	497
		498	X_LOCK (reslock);
661	size = res_queue.size;	499	size = res_queue.size;
662	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	500	X_UNLOCK (reslock);
663		501
664	if (size)	502	if (size)
665	return;	503	return;
666		504
667	maybe_start_thread ();	505	etp_maybe_start_thread ();
668		506
669	FD_ZERO(&rfd);	507	FD_ZERO (&rfd);
670	FD_SET(respipe [0], &rfd);	508	FD_SET (respipe [0], &rfd);
671		509
672	select (respipe [0] + 1, &rfd, 0, 0, 0);	510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
673	}	511	}
674	}	512	}
675		513
676	static int poll_cb ()	514	static int poll_cb (void)
677	{	515	{
678	dSP;
679	int count = 0;
680	int maxreqs = max_poll_reqs;
681	int do_croak = 0;
682	struct timeval tv_start, tv_now;
683	aio_req req;
684
685	if (max_poll_time)
686	gettimeofday (&tv_start, 0);
687
688	for (;;)	516	for (;;)
689	{	517	{
690	for (;;)	518	int res = eio_poll ();
691	{
692	maybe_start_thread ();
693		519
694	LOCK (reslock);	520	if (res > 0)
695	req = reqq_shift (&res_queue);
696
697	if (req)
698	{
699	--npending;
700
701	if (!res_queue.size)
702	{
703	/* read any signals sent by the worker threads */
704	char buf [32];
705	while (read (respipe [0], buf, 32) == 32)
706	;
707	}
708	}
709
710	UNLOCK (reslock);
711
712	if (!req)
713	break;
714
715	--nreqs;
716
717	if (req->type == REQ_GROUP && req->length)
718	{
719	req->fd = 1; /* mark request as delayed */
720	continue;
721	}
722	else
723	{
724	if (req->type == REQ_READ)
725	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
726
727	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
728	SvREADONLY_off (req->data);
729
730	if (req->statdata)
731	{
732	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
733	PL_laststatval = req->result;
734	PL_statcache = *(req->statdata);
735	}
736
737	req_invoke (req);
738
739	count++;
740	}
741
742	req_free (req);
743
744	if (maxreqs && !--maxreqs)
745	break;
746
747	if (max_poll_time)
748	{
749	gettimeofday (&tv_now, 0);
750
751	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
752	break;
753	}
754	}
755
756	if (nreqs <= max_outstanding)
757	break;	521	croak (0);
		522
		523	if (!max_outstanding || max_outstanding > eio_nreqs ())
		524	return res;
758		525
759	poll_wait ();	526	poll_wait ();
760
761	++maxreqs;
762	}	527	}
763
764	return count;
765	}	528	}
766		529
767	static void create_pipe ()	530	static void atfork_child (void)
768	{	531	{
769	if (pipe (respipe))	532	create_respipe ();
770	croak ("unable to initialize result pipe");
771
772	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
773	croak ("cannot set result pipe to nonblocking mode");
774
775	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
776	croak ("cannot set result pipe to nonblocking mode");
777	}	533	}
778		534
779	/*****************************************************************************/	535	static SV *
780	/* work around various missing functions */	536	get_cb (SV *cb_sv)
781
782	#if !HAVE_PREADWRITE
783	# define pread aio_pread
784	# define pwrite aio_pwrite
785
786	/*
787	* make our pread/pwrite safe against themselves, but not against
788	* normal read/write by using a mutex. slows down execution a lot,
789	* but that's your problem, not mine.
790	*/
791	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
792
793	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
794	{	537	{
795	ssize_t res;	538	HV *st;
796	off_t ooffset;	539	GV *gvp;
		540	CV *cv;
797		541
798	LOCK (preadwritelock);	542	if (!SvOK (cb_sv))
799	ooffset = lseek (fd, 0, SEEK_CUR);
800	lseek (fd, offset, SEEK_SET);
801	res = read (fd, buf, count);
802	lseek (fd, ooffset, SEEK_SET);
803	UNLOCK (preadwritelock);
804
805	return res;
806	}
807
808	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
809	{
810	ssize_t res;
811	off_t ooffset;
812
813	LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);
816	res = write (fd, buf, count);
817	lseek (fd, offset, SEEK_SET);
818	UNLOCK (preadwritelock);
819
820	return res;
821	}
822	#endif
823
824	#if !HAVE_FDATASYNC
825	# define fdatasync fsync
826	#endif
827
828	#if !HAVE_READAHEAD
829	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
830
831	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
832	{
833	dBUF;
834
835	while (count > 0)
836	{
837	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
838
839	pread (fd, aio_buf, len, offset);
840	offset += len;
841	count -= len;
842	}
843
844	errno = 0;
845	}
846
847	#endif
848
849	#if !HAVE_READDIR_R
850	# define readdir_r aio_readdir_r
851
852	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
853
854	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
855	{
856	struct dirent *e;
857	int errorno;
858
859	LOCK (readdirlock);
860
861	e = readdir (dirp);
862	errorno = errno;
863
864	if (e)
865	{
866	*res = ent;
867	strcpy (ent->d_name, e->d_name);
868	}
869	else
870	*res = 0;
871
872	UNLOCK (readdirlock);
873
874	errno = errorno;
875	return e ? 0 : -1;
876	}
877	#endif
878
879	/* sendfile always needs emulation */
880	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
881	{
882	ssize_t res;
883
884	if (!count)
885	return 0;	543	return 0;
886		544
887	#if HAVE_SENDFILE	545	cv = sv_2cv (cb_sv, &st, &gvp, 0);
888	# if __linux
889	res = sendfile (ofd, ifd, &offset, count);
890		546
891	# elif __freebsd	547	if (!cv)
892	/*	548	croak ("IO::AIO callback must be undef or a CODE reference");
893	* Of course, the freebsd sendfile is a dire hack with no thoughts
894	* wasted on making it similar to other I/O functions.
895	*/
896	{
897	off_t sbytes;
898	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
899		549
900	if (res < 0 && sbytes)	550	return (SV *)cv;
901	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
902	res = sbytes;
903	}
904
905	# elif __hpux
906	res = sendfile (ofd, ifd, offset, count, 0, 0);
907
908	# elif __solaris
909	{
910	struct sendfilevec vec;
911	size_t sbytes;
912
913	vec.sfv_fd = ifd;
914	vec.sfv_flag = 0;
915	vec.sfv_off = offset;
916	vec.sfv_len = count;
917
918	res = sendfilev (ofd, &vec, 1, &sbytes);
919
920	if (res < 0 && sbytes)
921	res = sbytes;
922	}
923
924	# endif
925	#else
926	res = -1;
927	errno = ENOSYS;
928	#endif
929
930	if (res < 0
931	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
932	#if __solaris
933	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
934	#endif
935	)
936	)
937	{
938	/* emulate sendfile. this is a major pain in the ass */
939	dBUF;
940
941	res = 0;
942
943	while (count)
944	{
945	ssize_t cnt;
946
947	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
948
949	if (cnt <= 0)
950	{
951	if (cnt && !res) res = -1;
952	break;
953	}
954
955	cnt = write (ofd, aio_buf, cnt);
956
957	if (cnt <= 0)
958	{
959	if (cnt && !res) res = -1;
960	break;
961	}
962
963	offset += cnt;
964	res += cnt;
965	count -= cnt;
966	}
967	}
968
969	return res;
970	}
971
972	/* read a full directory */
973	static void scandir_ (aio_req req, worker *self)
974	{
975	DIR *dirp;
976	union
977	{
978	struct dirent d;
979	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
980	} *u;
981	struct dirent *entp;
982	char *name, *names;
983	int memlen = 4096;
984	int memofs = 0;
985	int res = 0;
986	int errorno;
987
988	LOCK (wrklock);
989	self->dirp = dirp = opendir (req->dataptr);
990	self->dbuf = u = malloc (sizeof (*u));
991	req->data2ptr = names = malloc (memlen);
992	UNLOCK (wrklock);
993
994	if (dirp && u && names)
995	for (;;)
996	{
997	errno = 0;
998	readdir_r (dirp, &u->d, &entp);
999
1000	if (!entp)
1001	break;
1002
1003	name = entp->d_name;
1004
1005	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1006	{
1007	int len = strlen (name) + 1;
1008
1009	res++;
1010
1011	while (memofs + len > memlen)
1012	{
1013	memlen *= 2;
1014	LOCK (wrklock);
1015	req->data2ptr = names = realloc (names, memlen);
1016	UNLOCK (wrklock);
1017
1018	if (!names)
1019	break;
1020	}
1021
1022	memcpy (names + memofs, name, len);
1023	memofs += len;
1024	}
1025	}
1026
1027	if (errno)
1028	res = -1;
1029
1030	req->result = res;
1031	}
1032
1033	/*****************************************************************************/
1034
1035	static void *aio_proc (void *thr_arg)
1036	{
1037	aio_req req;
1038	struct timespec ts;
1039	worker *self = (worker *)thr_arg;
1040
1041	/* try to distribute timeouts somewhat evenly */
1042	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1043	* (1000000000UL / 1024UL);
1044
1045	for (;;)
1046	{
1047	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1048
1049	LOCK (reqlock);
1050
1051	for (;;)
1052	{
1053	self->req = req = reqq_shift (&req_queue);
1054
1055	if (req)
1056	break;
1057
1058	++idle;
1059
1060	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1061	== ETIMEDOUT)
1062	{
1063	if (idle > max_idle)
1064	{
1065	--idle;
1066	UNLOCK (reqlock);
1067	LOCK (wrklock);
1068	--started;
1069	UNLOCK (wrklock);
1070	goto quit;
1071	}
1072
1073	/* we are allowed to idle, so do so without any timeout */
1074	pthread_cond_wait (&reqwait, &reqlock);
1075	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1076	}
1077
1078	--idle;
1079	}
1080
1081	--nready;
1082
1083	UNLOCK (reqlock);
1084
1085	errno = 0; /* strictly unnecessary */
1086
1087	if (!(req->flags & FLAG_CANCELLED))
1088	switch (req->type)
1089	{
1090	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1091	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1092
1093	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1094	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1095
1096	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1097	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1098	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1099
1100	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1101	case REQ_CLOSE: req->result = close (req->fd); break;
1102	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1103	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1104	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1105	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1106	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1107	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1108
1109	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1110	case REQ_FSYNC: req->result = fsync (req->fd); break;
1111	case REQ_READDIR: scandir_ (req, self); break;
1112
1113	case REQ_BUSY:
1114	{
1115	struct timeval tv;
1116
1117	tv.tv_sec = req->fd;
1118	tv.tv_usec = req->fd2;
1119
1120	req->result = select (0, 0, 0, 0, &tv);
1121	}
1122
1123	case REQ_GROUP:
1124	case REQ_NOP:
1125	break;
1126
1127	case REQ_QUIT:
1128	goto quit;
1129
1130	default:
1131	req->result = ENOSYS;
1132	break;
1133	}
1134
1135	req->errorno = errno;
1136
1137	LOCK (reslock);
1138
1139	++npending;
1140
1141	if (!reqq_push (&res_queue, req))
1142	/* write a dummy byte to the pipe so fh becomes ready */
1143	write (respipe [1], &respipe, 1);
1144
1145	self->req = 0;
1146	worker_clear (self);
1147
1148	UNLOCK (reslock);
1149	}
1150
1151	quit:
1152	LOCK (wrklock);
1153	worker_free (self);
1154	UNLOCK (wrklock);
1155
1156	return 0;
1157	}
1158
1159	/*****************************************************************************/
1160
1161	static void atfork_prepare (void)
1162	{
1163	LOCK (wrklock);
1164	LOCK (reqlock);
1165	LOCK (reslock);
1166	#if !HAVE_PREADWRITE
1167	LOCK (preadwritelock);
1168	#endif
1169	#if !HAVE_READDIR_R
1170	LOCK (readdirlock);
1171	#endif
1172	}
1173
1174	static void atfork_parent (void)
1175	{
1176	#if !HAVE_READDIR_R
1177	UNLOCK (readdirlock);
1178	#endif
1179	#if !HAVE_PREADWRITE
1180	UNLOCK (preadwritelock);
1181	#endif
1182	UNLOCK (reslock);
1183	UNLOCK (reqlock);
1184	UNLOCK (wrklock);
1185	}
1186
1187	static void atfork_child (void)
1188	{
1189	aio_req prv;
1190
1191	while (prv = reqq_shift (&req_queue))
1192	req_free (prv);
1193
1194	while (prv = reqq_shift (&res_queue))
1195	req_free (prv);
1196
1197	while (wrk_first.next != &wrk_first)
1198	{
1199	worker *wrk = wrk_first.next;
1200
1201	if (wrk->req)
1202	req_free (wrk->req);
1203
1204	worker_clear (wrk);
1205	worker_free (wrk);
1206	}
1207
1208	started = 0;
1209	idle = 0;
1210	nreqs = 0;
1211	nready = 0;
1212	npending = 0;
1213
1214	close (respipe [0]);
1215	close (respipe [1]);
1216	create_pipe ();
1217
1218	atfork_parent ();
1219	}	551	}
1220		552
1221	#define dREQ \	553	#define dREQ \
		554	SV *cb_cv; \
1222	aio_req req; \	555	aio_req req; \
1223	int req_pri = next_pri; \	556	int req_pri = next_pri; \
1224	next_pri = DEFAULT_PRI + PRI_BIAS; \	557	next_pri = EIO_PRI_DEFAULT; \
1225	\	558	\
1226	if (SvOK (callback) && !SvROK (callback)) \	559	cb_cv = get_cb (callback); \
1227	croak ("callback must be undef or of reference type"); \
1228	\	560	\
1229	Newz (0, req, 1, aio_cb); \	561	Newz (0, req, 1, eio_req); \
1230	if (!req) \	562	if (!req) \
1231	croak ("out of memory during aio_req allocation"); \	563	croak ("out of memory during eio_req allocation"); \
1232	\	564	\
1233	req->callback = newSVsv (callback); \	565	req->callback = SvREFCNT_inc (cb_cv); \
1234	req->pri = req_pri	566	req->pri = req_pri
1235		567
1236	#define REQ_SEND \	568	#define REQ_SEND \
		569	PUTBACK; \
1237	req_send (req); \	570	req_submit (req); \
		571	SPAGAIN; \
1238	\	572	\
1239	if (GIMME_V != G_VOID) \	573	if (GIMME_V != G_VOID) \
1240	XPUSHs (req_sv (req, AIO_REQ_KLASS));	574	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1241		575
1242	MODULE = IO::AIO PACKAGE = IO::AIO	576	MODULE = IO::AIO PACKAGE = IO::AIO
1243		577
1244	PROTOTYPES: ENABLE	578	PROTOTYPES: ENABLE
1245		579
1246	BOOT:	580	BOOT:
1247	{	581	{
		582	static const struct {
		583	const char *name;
		584	IV iv;
		585	} *civ, const_iv[] = {
		586	# define const_iv(name, value) { # name, (IV) value },
		587	# define const_eio(name) { # name, (IV) EIO_ ## name },
		588	const_iv (EXDEV , EXDEV)
		589	const_iv (ENOSYS , ENOSYS)
		590	const_iv (O_RDONLY, O_RDONLY)
		591	const_iv (O_WRONLY, O_WRONLY)
		592	const_iv (O_CREAT , O_CREAT)
		593	const_iv (O_TRUNC , O_TRUNC)
		594	#ifndef _WIN32
		595	const_iv (S_IFIFO , S_IFIFO)
		596	#endif
		597	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		598	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		599	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		600	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		601	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		602	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		603
		604	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		605	const_eio (SYNC_FILE_RANGE_WRITE)
		606	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		607
		608	const_eio (READDIR_DENTS)
		609	const_eio (READDIR_DIRS_FIRST)
		610	const_eio (READDIR_STAT_ORDER)
		611	const_eio (READDIR_FOUND_UNKNOWN)
		612
		613	const_eio (DT_UNKNOWN)
		614	const_eio (DT_FIFO)
		615	const_eio (DT_CHR)
		616	const_eio (DT_DIR)
		617	const_eio (DT_BLK)
		618	const_eio (DT_REG)
		619	const_eio (DT_LNK)
		620	const_eio (DT_SOCK)
		621	const_eio (DT_WHT)
		622	};
		623
1248	HV *stash = gv_stashpv ("IO::AIO", 1);	624	stash = gv_stashpv ("IO::AIO", 1);
1249		625
1250	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	626	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1251	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	627	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1252	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1253	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1254	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1255	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1256		628
1257	create_pipe ();	629	create_respipe ();
1258	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	630
		631	if (eio_init (want_poll, done_poll) < 0)
		632	croak ("IO::AIO: unable to initialise eio library");
		633
		634	/* atfork child called in fifo order, so before eio's handler */
		635	X_THREAD_ATFORK (0, 0, atfork_child);
1259	}	636	}
1260		637
1261	void	638	void
1262	max_poll_reqs (int nreqs)	639	max_poll_reqs (int nreqs)
1263	PROTOTYPE: $	640	PROTOTYPE: $
1264	CODE:	641	CODE:
1265	max_poll_reqs = nreqs;	642	eio_set_max_poll_reqs (nreqs);
1266		643
1267	void	644	void
1268	max_poll_time (double nseconds)	645	max_poll_time (double nseconds)
1269	PROTOTYPE: $	646	PROTOTYPE: $
1270	CODE:	647	CODE:
1271	max_poll_time = nseconds * AIO_TICKS;	648	eio_set_max_poll_time (nseconds);
1272		649
1273	void	650	void
1274	min_parallel (int nthreads)	651	min_parallel (int nthreads)
1275	PROTOTYPE: $	652	PROTOTYPE: $
		653	CODE:
		654	eio_set_min_parallel (nthreads);
1276		655
1277	void	656	void
1278	max_parallel (int nthreads)	657	max_parallel (int nthreads)
1279	PROTOTYPE: $	658	PROTOTYPE: $
		659	CODE:
		660	eio_set_max_parallel (nthreads);
1280		661
1281	void	662	void
1282	max_idle (int nthreads)	663	max_idle (int nthreads)
1283	PROTOTYPE: $	664	PROTOTYPE: $
1284	CODE:	665	CODE:
1285	set_max_idle (nthreads);	666	eio_set_max_idle (nthreads);
1286		667
1287	int	668	void
1288	max_outstanding (int maxreqs)	669	max_outstanding (int maxreqs)
1289	PROTOTYPE: $	670	PROTOTYPE: $
1290	CODE:	671	CODE:
1291	RETVAL = max_outstanding;
1292	max_outstanding = maxreqs;	672	max_outstanding = maxreqs;
1293	OUTPUT:
1294	RETVAL
1295		673
1296	void	674	void
1297	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	675	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1298	SV * pathname
1299	int flags
1300	int mode
1301	SV * callback
1302	PROTOTYPE: $$$;$	676	PROTOTYPE: $$$;$
1303	PPCODE:	677	PPCODE:
1304	{	678	{
1305	dREQ;	679	dREQ;
1306		680
1307	req->type = REQ_OPEN;	681	req->type = EIO_OPEN;
1308	req->data = newSVsv (pathname);	682	req->sv1 = newSVsv (pathname);
1309	req->dataptr = SvPVbyte_nolen (req->data);	683	req->ptr1 = SvPVbyte_nolen (req->sv1);
1310	req->fd = flags;	684	req->int1 = flags;
1311	req->mode = mode;	685	req->int2 = mode;
1312		686
1313	REQ_SEND;	687	REQ_SEND;
1314	}	688	}
1315		689
1316	void	690	void
1317	aio_close (fh,callback=&PL_sv_undef)	691	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1318	SV * fh
1319	SV * callback
1320	PROTOTYPE: $;$	692	PROTOTYPE: $;$
1321	ALIAS:	693	ALIAS:
1322	aio_close = REQ_CLOSE
1323	aio_fsync = REQ_FSYNC	694	aio_fsync = EIO_FSYNC
1324	aio_fdatasync = REQ_FDATASYNC	695	aio_fdatasync = EIO_FDATASYNC
1325	PPCODE:	696	PPCODE:
1326	{	697	{
		698	int fd = s_fileno_croak (fh, 0);
1327	dREQ;	699	dREQ;
1328		700
1329	req->type = ix;	701	req->type = ix;
1330	req->fh = newSVsv (fh);	702	req->sv1 = newSVsv (fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	703	req->int1 = fd;
1332		704
1333	REQ_SEND (req);	705	REQ_SEND (req);
1334	}	706	}
1335		707
1336	void	708	void
		709	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		710	PROTOTYPE: $$$$;$
		711	PPCODE:
		712	{
		713	int fd = s_fileno_croak (fh, 0);
		714	dREQ;
		715
		716	req->type = EIO_SYNC_FILE_RANGE;
		717	req->sv1 = newSVsv (fh);
		718	req->int1 = fd;
		719	req->offs = offset;
		720	req->size = nbytes;
		721	req->int2 = flags;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
		727	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		728	PROTOTYPE: $;$
		729	PPCODE:
		730	{
		731	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		732	int fd = s_fileno_croak (fh, 0);
		733	dREQ;
		734
		735	if (close_pipe < 0)
		736	{
		737	int pipefd [2];
		738
		739	if (pipe (pipefd) < 0
		740	|| close (pipefd [1]) < 0
		741	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		742	abort (); /*D*/
		743
		744	close_pipe = pipefd [0];
		745	}
		746
		747	req->type = EIO_DUP2;
		748	req->int1 = close_pipe;
		749	req->sv2 = newSVsv (fh);
		750	req->int2 = fd;
		751
		752	REQ_SEND (req);
		753	}
		754
		755	void
1337	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	756	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1338	SV * fh
1339	UV offset
1340	UV length
1341	SV * data
1342	UV dataoffset
1343	SV * callback
1344	ALIAS:	757	ALIAS:
1345	aio_read = REQ_READ	758	aio_read = EIO_READ
1346	aio_write = REQ_WRITE	759	aio_write = EIO_WRITE
1347	PROTOTYPE: $$$$$;$	760	PROTOTYPE: $$$$$;$
1348	PPCODE:	761	PPCODE:
1349	{	762	{
1350	aio_req req;
1351	STRLEN svlen;	763	STRLEN svlen;
		764	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1352	char *svptr = SvPVbyte (data, svlen);	765	char *svptr = SvPVbyte (data, svlen);
1353		766	UV len = SvUV (length);
1354	SvUPGRADE (data, SVt_PV);
1355	SvPOK_on (data);
1356		767
1357	if (dataoffset < 0)	768	if (dataoffset < 0)
1358	dataoffset += svlen;	769	dataoffset += svlen;
1359		770
1360	if (dataoffset < 0 || dataoffset > svlen)	771	if (dataoffset < 0 || dataoffset > svlen)
1361	croak ("data offset outside of string");	772	croak ("dataoffset outside of data scalar");
1362		773
1363	if (ix == REQ_WRITE)	774	if (ix == EIO_WRITE)
1364	{	775	{
1365	/* write: check length and adjust. */	776	/* write: check length and adjust. */
1366	if (length < 0 || length + dataoffset > svlen)	777	if (!SvOK (length) || len + dataoffset > svlen)
1367	length = svlen - dataoffset;	778	len = svlen - dataoffset;
1368	}	779	}
1369	else	780	else
1370	{	781	{
1371	/* read: grow scalar as necessary */	782	/* read: check type and grow scalar as necessary */
		783	SvUPGRADE (data, SVt_PV);
1372	svptr = SvGROW (data, length + dataoffset);	784	svptr = SvGROW (data, len + dataoffset + 1);
1373	}	785	}
1374
1375	if (length < 0)
1376	croak ("length must not be negative");
1377		786
1378	{	787	{
1379	dREQ;	788	dREQ;
1380		789
1381	req->type = ix;	790	req->type = ix;
1382	req->fh = newSVsv (fh);	791	req->sv1 = newSVsv (fh);
1383	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	792	req->int1 = fd;
1384	: IoOFP (sv_2io (fh)));	793	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1385	req->offset = offset;	794	req->size = len;
1386	req->length = length;
1387	req->data = SvREFCNT_inc (data);	795	req->sv2 = SvREFCNT_inc (data);
1388	req->dataptr = (char *)svptr + dataoffset;	796	req->ptr2 = (char *)svptr + dataoffset;
		797	req->stroffset = dataoffset;
1389		798
1390	if (!SvREADONLY (data))	799	if (!SvREADONLY (data))
1391	{	800	{
1392	SvREADONLY_on (data);	801	SvREADONLY_on (data);
1393	req->data2ptr = (void *)data;	802	req->flags |= FLAG_SV2_RO_OFF;
1394	}	803	}
1395		804
1396	REQ_SEND;	805	REQ_SEND;
1397	}	806	}
1398	}	807	}
1399		808
1400	void	809	void
		810	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		811	PROTOTYPE: $$;$
		812	PPCODE:
		813	{
		814	SV *data;
		815	dREQ;
		816
		817	req->type = EIO_READLINK;
		818	req->sv1 = newSVsv (path);
		819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
1401	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	825	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1402	SV * out_fh
1403	SV * in_fh
1404	UV in_offset
1405	UV length
1406	SV * callback
1407	PROTOTYPE: $$$$;$	826	PROTOTYPE: $$$$;$
1408	PPCODE:	827	PPCODE:
1409	{	828	{
		829	int ifd = s_fileno_croak (in_fh , 0);
		830	int ofd = s_fileno_croak (out_fh, 1);
1410	dREQ;	831	dREQ;
1411		832
1412	req->type = REQ_SENDFILE;	833	req->type = EIO_SENDFILE;
1413	req->fh = newSVsv (out_fh);	834	req->sv1 = newSVsv (out_fh);
1414	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	835	req->int1 = ofd;
1415	req->fh2 = newSVsv (in_fh);	836	req->sv2 = newSVsv (in_fh);
1416	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	837	req->int2 = ifd;
1417	req->offset = in_offset;	838	req->offs = in_offset;
1418	req->length = length;	839	req->size = length;
1419		840
1420	REQ_SEND;	841	REQ_SEND;
1421	}	842	}
1422		843
1423	void	844	void
1424	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	845	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1425	SV * fh
1426	UV offset
1427	IV length
1428	SV * callback
1429	PROTOTYPE: $$$;$	846	PROTOTYPE: $$$;$
1430	PPCODE:	847	PPCODE:
1431	{	848	{
		849	int fd = s_fileno_croak (fh, 0);
1432	dREQ;	850	dREQ;
1433		851
1434	req->type = REQ_READAHEAD;	852	req->type = EIO_READAHEAD;
1435	req->fh = newSVsv (fh);	853	req->sv1 = newSVsv (fh);
1436	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	854	req->int1 = fd;
1437	req->offset = offset;	855	req->offs = offset;
1438	req->length = length;	856	req->size = length;
1439		857
1440	REQ_SEND;	858	REQ_SEND;
1441	}	859	}
1442		860
1443	void	861	void
1444	aio_stat (fh_or_path,callback=&PL_sv_undef)	862	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1445	SV * fh_or_path
1446	SV * callback
1447	ALIAS:	863	ALIAS:
1448	aio_stat = REQ_STAT	864	aio_stat = EIO_STAT
1449	aio_lstat = REQ_LSTAT	865	aio_lstat = EIO_LSTAT
1450	PPCODE:	866	PPCODE:
1451	{	867	{
1452	dREQ;	868	dREQ;
1453		869
1454	New (0, req->statdata, 1, Stat_t);	870	req->sv1 = newSVsv (fh_or_path);
1455	if (!req->statdata)
1456	{
1457	req_free (req);
1458	croak ("out of memory during aio_req->statdata allocation");
1459	}
1460		871
1461	if (SvPOK (fh_or_path))	872	if (SvPOK (req->sv1))
1462	{	873	{
1463	req->type = ix;	874	req->type = ix;
1464	req->data = newSVsv (fh_or_path);
1465	req->dataptr = SvPVbyte_nolen (req->data);	875	req->ptr1 = SvPVbyte_nolen (req->sv1);
1466	}	876	}
1467	else	877	else
1468	{	878	{
1469	req->type = REQ_FSTAT;	879	req->type = EIO_FSTAT;
1470	req->fh = newSVsv (fh_or_path);
1471	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1472	}	881	}
1473		882
1474	REQ_SEND;	883	REQ_SEND;
1475	}	884	}
1476		885
1477	void	886	void
		887	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		888	PPCODE:
		889	{
		890	dREQ;
		891
		892	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		893	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		894	req->sv1 = newSVsv (fh_or_path);
		895
		896	if (SvPOK (req->sv1))
		897	{
		898	req->type = EIO_UTIME;
		899	req->ptr1 = SvPVbyte_nolen (req->sv1);
		900	}
		901	else
		902	{
		903	req->type = EIO_FUTIME;
		904	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		905	}
		906
		907	REQ_SEND;
		908	}
		909
		910	void
		911	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		912	PPCODE:
		913	{
		914	dREQ;
		915
		916	req->sv1 = newSVsv (fh_or_path);
		917	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		918
		919	if (SvPOK (req->sv1))
		920	{
		921	req->type = EIO_TRUNCATE;
		922	req->ptr1 = SvPVbyte_nolen (req->sv1);
		923	}
		924	else
		925	{
		926	req->type = EIO_FTRUNCATE;
		927	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		928	}
		929
		930	REQ_SEND;
		931	}
		932
		933	void
		934	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		935	ALIAS:
		936	aio_chmod = EIO_CHMOD
		937	aio_mkdir = EIO_MKDIR
		938	PPCODE:
		939	{
		940	dREQ;
		941
		942	req->int2 = mode;
		943	req->sv1 = newSVsv (fh_or_path);
		944
		945	if (SvPOK (req->sv1))
		946	{
		947	req->type = ix;
		948	req->ptr1 = SvPVbyte_nolen (req->sv1);
		949	}
		950	else
		951	{
		952	req->type = EIO_FCHMOD;
		953	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		954	}
		955
		956	REQ_SEND;
		957	}
		958
		959	void
		960	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		961	PPCODE:
		962	{
		963	dREQ;
		964
		965	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		966	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		967	req->sv1 = newSVsv (fh_or_path);
		968
		969	if (SvPOK (req->sv1))
		970	{
		971	req->type = EIO_CHOWN;
		972	req->ptr1 = SvPVbyte_nolen (req->sv1);
		973	}
		974	else
		975	{
		976	req->type = EIO_FCHOWN;
		977	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		978	}
		979
		980	REQ_SEND;
		981	}
		982
		983	void
		984	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		985	PPCODE:
		986	{
		987	dREQ;
		988
		989	req->type = EIO_READDIR;
		990	req->sv1 = newSVsv (pathname);
		991	req->ptr1 = SvPVbyte_nolen (req->sv1);
		992	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		993
		994	if (flags & EIO_READDIR_DENTS)
		995	req->int1 |= EIO_READDIR_CUSTOM2;
		996
		997	REQ_SEND;
		998	}
		999
		1000	void
1478	aio_unlink (pathname,callback=&PL_sv_undef)	1001	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1479	SV * pathname
1480	SV * callback
1481	ALIAS:	1002	ALIAS:
1482	aio_unlink = REQ_UNLINK	1003	aio_unlink = EIO_UNLINK
1483	aio_rmdir = REQ_RMDIR	1004	aio_rmdir = EIO_RMDIR
1484	aio_readdir = REQ_READDIR	1005	aio_readdir = EIO_READDIR
1485	PPCODE:	1006	PPCODE:
1486	{	1007	{
1487	dREQ;	1008	dREQ;
1488		1009
1489	req->type = ix;	1010	req->type = ix;
1490	req->data = newSVsv (pathname);	1011	req->sv1 = newSVsv (pathname);
1491	req->dataptr = SvPVbyte_nolen (req->data);	1012	req->ptr1 = SvPVbyte_nolen (req->sv1);
1492		1013
1493	REQ_SEND;	1014	REQ_SEND;
1494	}	1015	}
1495		1016
1496	void	1017	void
1497	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1018	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1498	SV * oldpath
1499	SV * newpath
1500	SV * callback
1501	ALIAS:	1019	ALIAS:
1502	aio_link = REQ_LINK	1020	aio_link = EIO_LINK
1503	aio_symlink = REQ_SYMLINK	1021	aio_symlink = EIO_SYMLINK
1504	aio_rename = REQ_RENAME	1022	aio_rename = EIO_RENAME
1505	PPCODE:	1023	PPCODE:
1506	{	1024	{
1507	dREQ;	1025	dREQ;
1508		1026
1509	req->type = ix;	1027	req->type = ix;
1510	req->fh = newSVsv (oldpath);	1028	req->sv1 = newSVsv (oldpath);
1511	req->data2ptr = SvPVbyte_nolen (req->fh);	1029	req->ptr1 = SvPVbyte_nolen (req->sv1);
1512	req->data = newSVsv (newpath);	1030	req->sv2 = newSVsv (newpath);
1513	req->dataptr = SvPVbyte_nolen (req->data);	1031	req->ptr2 = SvPVbyte_nolen (req->sv2);
1514		1032
1515	REQ_SEND;	1033	REQ_SEND;
1516	}	1034	}
1517		1035
1518	void	1036	void
1519	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1037	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1520	SV * pathname
1521	SV * callback
1522	UV mode
1523	UV dev
1524	PPCODE:	1038	PPCODE:
1525	{	1039	{
1526	dREQ;	1040	dREQ;
1527		1041
1528	req->type = REQ_MKNOD;	1042	req->type = EIO_MKNOD;
1529	req->data = newSVsv (pathname);	1043	req->sv1 = newSVsv (pathname);
1530	req->dataptr = SvPVbyte_nolen (req->data);	1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
1531	req->mode = (mode_t)mode;	1045	req->int2 = (mode_t)mode;
1532	req->offset = dev;	1046	req->offs = dev;
1533		1047
1534	REQ_SEND;	1048	REQ_SEND;
1535	}	1049	}
1536		1050
1537	void	1051	void
1538	aio_busy (delay,callback=&PL_sv_undef)	1052	aio_busy (double delay, SV *callback=&PL_sv_undef)
1539	double delay
1540	SV * callback
1541	PPCODE:	1053	PPCODE:
1542	{	1054	{
1543	dREQ;	1055	dREQ;
1544		1056
1545	req->type = REQ_BUSY;	1057	req->type = EIO_BUSY;
1546	req->fd = delay < 0. ? 0 : delay;	1058	req->nv1 = delay < 0. ? 0. : delay;
1547	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1548		1059
1549	REQ_SEND;	1060	REQ_SEND;
1550	}	1061	}
1551		1062
1552	void	1063	void
1553	aio_group (callback=&PL_sv_undef)	1064	aio_group (SV *callback=&PL_sv_undef)
1554	SV * callback
1555	PROTOTYPE: ;$	1065	PROTOTYPE: ;$
1556	PPCODE:	1066	PPCODE:
1557	{	1067	{
1558	dREQ;	1068	dREQ;
1559		1069
1560	req->type = REQ_GROUP;	1070	req->type = EIO_GROUP;
		1071
1561	req_send (req);	1072	req_submit (req);
1562
1563	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1073	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1564	}	1074	}
1565		1075
1566	void	1076	void
1567	aio_nop (callback=&PL_sv_undef)	1077	aio_nop (SV *callback=&PL_sv_undef)
1568	SV * callback	1078	ALIAS:
		1079	aio_nop = EIO_NOP
		1080	aio_sync = EIO_SYNC
1569	PPCODE:	1081	PPCODE:
1570	{	1082	{
1571	dREQ;	1083	dREQ;
1572		1084
1573	req->type = REQ_NOP;	1085	req->type = ix;
1574		1086
1575	REQ_SEND;	1087	REQ_SEND;
1576	}	1088	}
1577		1089
1578	int	1090	int
1579	aioreq_pri (int pri = 0)	1091	aioreq_pri (int pri = 0)
1580	PROTOTYPE: ;$	1092	PROTOTYPE: ;$
1581	CODE:	1093	CODE:
1582	RETVAL = next_pri - PRI_BIAS;	1094	RETVAL = next_pri;
1583	if (items > 0)	1095	if (items > 0)
1584	{	1096	{
1585	if (pri < PRI_MIN) pri = PRI_MIN;	1097	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1586	if (pri > PRI_MAX) pri = PRI_MAX;	1098	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1587	next_pri = pri + PRI_BIAS;	1099	next_pri = pri;
1588	}	1100	}
1589	OUTPUT:	1101	OUTPUT:
1590	RETVAL	1102	RETVAL
1591		1103
1592	void	1104	void
1593	aioreq_nice (int nice = 0)	1105	aioreq_nice (int nice = 0)
1594	CODE:	1106	CODE:
1595	nice = next_pri - nice;	1107	nice = next_pri - nice;
1596	if (nice < PRI_MIN) nice = PRI_MIN;	1108	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1597	if (nice > PRI_MAX) nice = PRI_MAX;	1109	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1598	next_pri = nice + PRI_BIAS;	1110	next_pri = nice;
1599		1111
1600	void	1112	void
1601	flush ()	1113	flush ()
1602	PROTOTYPE:	1114	PROTOTYPE:
1603	CODE:	1115	CODE:
1604	while (nreqs)	1116	while (eio_nreqs ())
1605	{	1117	{
1606	poll_wait ();	1118	poll_wait ();
1607	poll_cb (0);	1119	poll_cb ();
1608	}	1120	}
1609		1121
1610	void	1122	int
1611	poll()	1123	poll()
1612	PROTOTYPE:	1124	PROTOTYPE:
1613	CODE:	1125	CODE:
1614	if (nreqs)
1615	{
1616	poll_wait ();	1126	poll_wait ();
1617	poll_cb (0);	1127	RETVAL = poll_cb ();
1618	}	1128	OUTPUT:
		1129	RETVAL
1619		1130
1620	int	1131	int
1621	poll_fileno()	1132	poll_fileno()
1622	PROTOTYPE:	1133	PROTOTYPE:
1623	CODE:	1134	CODE:
…		…
1635		1146
1636	void	1147	void
1637	poll_wait()	1148	poll_wait()
1638	PROTOTYPE:	1149	PROTOTYPE:
1639	CODE:	1150	CODE:
1640	if (nreqs)
1641	poll_wait ();	1151	poll_wait ();
1642		1152
1643	int	1153	int
1644	nreqs()	1154	nreqs()
1645	PROTOTYPE:	1155	PROTOTYPE:
1646	CODE:	1156	CODE:
1647	RETVAL = nreqs;	1157	RETVAL = eio_nreqs ();
1648	OUTPUT:	1158	OUTPUT:
1649	RETVAL	1159	RETVAL
1650		1160
1651	int	1161	int
1652	nready()	1162	nready()
1653	PROTOTYPE:	1163	PROTOTYPE:
1654	CODE:	1164	CODE:
1655	RETVAL = get_nready ();	1165	RETVAL = eio_nready ();
1656	OUTPUT:	1166	OUTPUT:
1657	RETVAL	1167	RETVAL
1658		1168
1659	int	1169	int
1660	npending()	1170	npending()
1661	PROTOTYPE:	1171	PROTOTYPE:
1662	CODE:	1172	CODE:
1663	RETVAL = get_npending ();	1173	RETVAL = eio_npending ();
1664	OUTPUT:	1174	OUTPUT:
1665	RETVAL	1175	RETVAL
1666		1176
1667	int	1177	int
1668	nthreads()	1178	nthreads()
1669	PROTOTYPE:	1179	PROTOTYPE:
1670	CODE:	1180	CODE:
1671	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1181	RETVAL = eio_nthreads ();
1672	RETVAL = started;
1673	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1674	OUTPUT:	1182	OUTPUT:
1675	RETVAL	1183	RETVAL
1676		1184
		1185	int
		1186	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1190	RETVAL = posix_fadvise (fh, offset, length, advice);
		1191	#else
		1192	RETVAL = errno = ENOSYS;
		1193	#endif
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	ssize_t
		1198	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1199	PROTOTYPE: $$$$
		1200	CODE:
		1201	eio_sendfile_sync (ofh, ifh, offset, count);
		1202
		1203	void _on_next_submit (SV *cb)
		1204	CODE:
		1205	SvREFCNT_dec (on_next_submit);
		1206	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1207
1677	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
1678		1209
1679	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1680		1211
1681	void	1212	void
1682	cancel (aio_req_ornot req)	1213	cancel (aio_req_ornot req)
1683	CODE:	1214	CODE:
1684	req_cancel (req);	1215	eio_cancel (req);
1685		1216
1686	void	1217	void
1687	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1218	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1688	CODE:	1219	PPCODE:
		1220	{
		1221	if (GIMME_V != G_VOID)
		1222	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1223
		1224	if (items > 1)
		1225	{
		1226	SV *cb_cv = get_cb (callback);
		1227
1689	SvREFCNT_dec (req->callback);	1228	SvREFCNT_dec (req->callback);
1690	req->callback = newSVsv (callback);	1229	req->callback = SvREFCNT_inc (cb_cv);
		1230	}
		1231	}
1691		1232
1692	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1233	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1693		1234
1694	void	1235	void
1695	add (aio_req grp, ...)	1236	add (aio_req grp, ...)
1696	PPCODE:	1237	PPCODE:
1697	{	1238	{
1698	int i;	1239	int i;
1699	aio_req req;
1700		1240
1701	if (grp->fd == 2)	1241	if (grp->int1 == 2)
1702	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1242	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1703		1243
1704	for (i = 1; i < items; ++i )	1244	for (i = 1; i < items; ++i )
1705	{	1245	{
		1246	aio_req req;
		1247
1706	if (GIMME_V != G_VOID)	1248	if (GIMME_V != G_VOID)
1707	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1249	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1708		1250
1709	req = SvAIO_REQ (ST (i));	1251	req = SvAIO_REQ (ST (i));
1710		1252
1711	if (req)	1253	if (req)
1712	{	1254	eio_grp_add (grp, req);
1713	++grp->length;
1714	req->grp = grp;
1715
1716	req->grp_prev = 0;
1717	req->grp_next = grp->grp_first;
1718
1719	if (grp->grp_first)
1720	grp->grp_first->grp_prev = req;
1721
1722	grp->grp_first = req;
1723	}
1724	}	1255	}
1725	}	1256	}
1726		1257
1727	void	1258	void
1728	cancel_subs (aio_req_ornot req)	1259	cancel_subs (aio_req_ornot req)
…		…
1737	AV *av;	1268	AV *av;
1738		1269
1739	grp->errorno = errno;	1270	grp->errorno = errno;
1740		1271
1741	av = newAV ();	1272	av = newAV ();
		1273	av_extend (av, items - 1);
1742		1274
1743	for (i = 1; i < items; ++i )	1275	for (i = 1; i < items; ++i )
1744	av_push (av, newSVsv (ST (i)));	1276	av_push (av, newSVsv (ST (i)));
1745		1277
1746	SvREFCNT_dec (grp->data);	1278	SvREFCNT_dec (grp->sv1);
1747	grp->data = (SV *)av;	1279	grp->sv1 = (SV *)av;
1748	}	1280	}
1749		1281
1750	void	1282	void
1751	errno (aio_req grp, int errorno = errno)	1283	errno (aio_req grp, int errorno = errno)
1752	CODE:	1284	CODE:
1753	grp->errorno = errorno;	1285	grp->errorno = errorno;
1754		1286
1755	void	1287	void
1756	limit (aio_req grp, int limit)	1288	limit (aio_req grp, int limit)
1757	CODE:	1289	CODE:
1758	grp->fd2 = limit;	1290	eio_grp_limit (grp, limit);
1759	aio_grp_feed (grp);
1760		1291
1761	void	1292	void
1762	feed (aio_req grp, SV *callback=&PL_sv_undef)	1293	feed (aio_req grp, SV *callback=&PL_sv_undef)
1763	CODE:	1294	CODE:
1764	{	1295	{
1765	SvREFCNT_dec (grp->fh2);	1296	SvREFCNT_dec (grp->sv2);
1766	grp->fh2 = newSVsv (callback);	1297	grp->sv2 = newSVsv (callback);
		1298	grp->feed = aio_grp_feed;
1767		1299
1768	if (grp->fd2 <= 0)	1300	if (grp->int2 <= 0)
1769	grp->fd2 = 2;	1301	grp->int2 = 2;
1770		1302
1771	aio_grp_feed (grp);	1303	eio_grp_limit (grp, grp->int2);
1772	}	1304	}
1773		1305

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