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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.149 by root, Tue Jun 30 07:33:58 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"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
32		17
33	#if HAVE_SENDFILE	18	/* perl namespace pollution */
34	# if __linux	19	#undef VERSION
35	# include <sys/sendfile.h>	20
36	# elif __freebsd	21	#ifdef _WIN32
37	# include <sys/socket.h>	22
38	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	24	# undef malloc
40	# include <sys/socket.h>	25	# undef free
41	# elif __solaris /* not yet */	26
42	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
43	# else	59	#else
44	# error sendfile support requested but not available	60
45	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
46	#endif	68	#endif
47		69
48	/* number of seconds after which idle threads exit */	70	/* perl stupidly overrides readdir and maybe others */
49	#define IDLE_TIMEOUT 10	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
50		75
51	/* used for struct dirent, AIX doesn't provide it */	76	#define EIO_STRUCT_STAT Stat_t
52	#ifndef NAME_MAX	77
53	# define NAME_MAX 4096	78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
54	#endif	87	#endif
55		88
56	#ifndef PTHREAD_STACK_MIN	89	/*****************************************************************************/
57	/* care for broken platforms, e.g. windows */	90
58	# define PTHREAD_STACK_MIN 16384	91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
		93	#else
		94	# define expect(expr,value) (expr)
59	#endif	95	#endif
60		96
61	#if __ia64	97	#define expect_false(expr) expect ((expr) != 0, 0)
62	# define STACKSIZE 65536	98	#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		99
69	/* wether word reads are potentially non-atomic.	100	/*****************************************************************************/
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		101
81	/* buffer size for various temporary buffers */	102	static HV *stash;
82	#define AIO_BUFSIZE 65536	103	typedef SV SV8; /* byte-sv, used for argument-checking */
83		104	typedef int aio_rfd; /* read file desriptor */
84	#define dBUF \	105	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, REQ_READLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};
105		106
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		109
109	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
110	{
111	struct aio_cb *volatile next;
112
113	SV *callback, *fh;	111	SV *callback; \
114	SV *sv1, *sv2;	112	SV *sv1, *sv2; \
115	void *ptr1, *ptr2;
116	Stat_t *statdata;
117	off_t offs;
118	size_t size;
119	ssize_t result;
120
121	STRLEN stroffset;	113	STRLEN stroffset; \
122	int type;	114	SV *self;
123	int int1, int2;
124	int errorno;
125	mode_t mode; /* open */
126		115
127	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
128	unsigned char pri;
129		117
130	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
132	} aio_cb;	120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
133		149
134	enum {	150	enum {
135	FLAG_CANCELLED = 0x01,
136	FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
137	};	152	};
138		153
		154	#include "libeio/eio.c"
		155
139	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
140	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
141		158
142	enum {	159	static SV *on_next_submit;
143	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
144	PRI_MAX = 4,	161	static int max_outstanding;
145		162
146	DEFAULT_PRI = 0,	163	static int respipe_osf [2], respipe [2] = { -1, -1 };
147	PRI_BIAS = -PRI_MIN,
148	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149	};
150		164
151	#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153	static unsigned int max_poll_time = 0;
154	static unsigned int max_poll_reqs = 0;
155
156	/* calculcate time difference in ~1/AIO_TICKS of a second */
157	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158	{
159	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
161	}
162
163	static int next_pri = DEFAULT_PRI + PRI_BIAS;
164
165	static unsigned int started, idle, wanted;
166
167	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169	#else
170	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171	#endif
172
173	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176	/* worker threads management */
177	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179	typedef struct worker {
180	/* locked by wrklock */
181	struct worker *prev, *next;
182
183	pthread_t tid;
184
185	/* locked by reslock, reqlock or wrklock */
186	aio_req req; /* currently processed request */
187	void *dbuf;
188	DIR *dirp;
189	} worker;
190
191	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193	static void worker_clear (worker *wrk)
194	{
195	if (wrk->dirp)
196	{
197	closedir (wrk->dirp);
198	wrk->dirp = 0;
199	}
200
201	if (wrk->dbuf)
202	{
203	free (wrk->dbuf);
204	wrk->dbuf = 0;
205	}
206	}
207
208	static void worker_free (worker *wrk)
209	{
210	wrk->next->prev = wrk->prev;
211	wrk->prev->next = wrk->next;
212
213	free (wrk);
214	}
215
216	static volatile unsigned int nreqs, nready, npending;
217	static volatile unsigned int max_idle = 4;
218	static volatile unsigned int max_outstanding = 0xffffffff;
219	static int respipe [2];
220
221	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225	#if WORDACCESS_UNSAFE
226
227	static unsigned int get_nready ()
228	{
229	unsigned int retval;
230
231	LOCK (reqlock);
232	retval = nready;
233	UNLOCK (reqlock);
234
235	return retval;
236	}
237
238	static unsigned int get_npending ()
239	{
240	unsigned int retval;
241
242	LOCK (reslock);
243	retval = npending;
244	UNLOCK (reslock);
245
246	return retval;
247	}
248
249	static unsigned int get_nthreads ()
250	{
251	unsigned int retval;
252
253	LOCK (wrklock);
254	retval = started;
255	UNLOCK (wrklock);
256
257	return retval;
258	}
259
260	#else
261
262	# define get_nready() nready
263	# define get_npending() npending
264	# define get_nthreads() started
265
266	#endif
267
268	/*
269	* a somewhat faster data structure might be nice, but
270	* with 8 priorities this actually needs <20 insns
271	* per shift, the most expensive operation.
272	*/
273	typedef struct {
274	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275	int size;
276	} reqq;
277
278	static reqq req_queue;
279	static reqq res_queue;
280
281	int reqq_push (reqq *q, aio_req req)
282	{
283	int pri = req->pri;
284	req->next = 0;
285
286	if (q->qe[pri])
287	{
288	q->qe[pri]->next = req;
289	q->qe[pri] = req;
290	}
291	else
292	q->qe[pri] = q->qs[pri] = req;
293
294	return q->size++;
295	}
296
297	aio_req reqq_shift (reqq *q)
298	{
299	int pri;
300
301	if (!q->size)
302	return 0;
303
304	--q->size;
305
306	for (pri = NUM_PRI; pri--; )
307	{
308	aio_req req = q->qs[pri];
309
310	if (req)
311	{
312	if (!(q->qs[pri] = req->next))
313	q->qe[pri] = 0;
314
315	return req;
316	}
317	}
318
319	abort ();
320	}
321
322	static int poll_cb ();
323	static void req_invoke (aio_req req);
324	static void req_free (aio_req req);	165	static void req_destroy (aio_req req);
325	static void req_cancel (aio_req req);	166	static void req_cancel (aio_req req);
		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	char buf [4];
		178	while (respipe_read (respipe [0], buf, 4) == 4)
		179	;
		180	}
326		181
327	/* must be called at most once */	182	/* must be called at most once */
328	static SV *req_sv (aio_req req, const char *klass)	183	static SV *req_sv (aio_req req, const char *klass)
329	{	184	{
330	if (!req->self)	185	if (!req->self)
…		…
348	return mg ? (aio_req)mg->mg_ptr : 0;	203	return mg ? (aio_req)mg->mg_ptr : 0;
349	}	204	}
350		205
351	static void aio_grp_feed (aio_req grp)	206	static void aio_grp_feed (aio_req grp)
352	{	207	{
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	208	if (grp->sv2 && SvOK (grp->sv2))
354	{	209	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	210	dSP;
360		211
361	ENTER;	212	ENTER;
362	SAVETMPS;	213	SAVETMPS;
363	PUSHMARK (SP);	214	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	215	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
365	PUTBACK;	216	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	217	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	218	SPAGAIN;
368	FREETMPS;	219	FREETMPS;
369	LEAVE;	220	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	221	}
380	}	222	}
381		223
382	static void aio_grp_dec (aio_req grp)	224	static void req_submit (eio_req *req)
383	{	225	{
384	--grp->size;	226	eio_submit (req);
385		227
386	/* call feeder, if applicable */	228	if (expect_false (on_next_submit))
387	aio_grp_feed (grp);
388
389	/* finish, if done */
390	if (!grp->size && grp->int1)
391	{	229	{
392	req_invoke (grp);	230	dSP;
393	req_free (grp);	231	SV *cb = sv_2mortal (on_next_submit);
		232
		233	on_next_submit = 0;
		234
		235	PUSHMARK (SP);
		236	PUTBACK;
		237	call_sv (cb, G_DISCARD | G_EVAL);
394	}	238	}
395	}	239	}
396		240
397	static void req_invoke (aio_req req)	241	static int req_invoke (eio_req *req)
398	{	242	{
399	dSP;	243	dSP;
400		244
401	if (req->flags & FLAG_DATA_RO_OFF)	245	if (req->flags & FLAG_SV2_RO_OFF)
402	SvREADONLY_off (req->sv1);	246	SvREADONLY_off (req->sv2);
403		247
404	if (req->statdata)	248	if (!EIO_CANCELLED (req) && req->callback)
405	{
406	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
407	PL_laststatval = req->result;
408	PL_statcache = *(req->statdata);
409	}
410
411	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412	{	249	{
413	ENTER;	250	ENTER;
414	SAVETMPS;	251	SAVETMPS;
415	PUSHMARK (SP);	252	PUSHMARK (SP);
416	EXTEND (SP, 1);	253	EXTEND (SP, 1);
417		254
418	switch (req->type)	255	switch (req->type)
419	{	256	{
420	case REQ_READDIR:	257	case EIO_READDIR:
421	{	258	{
422	SV *rv = &PL_sv_undef;	259	SV *rv = &PL_sv_undef;
423		260
424	if (req->result >= 0)	261	if (req->result >= 0)
425	{	262	{
426	int i;	263	int i;
427	char *buf = req->ptr2;	264	char *names = (char *)req->ptr2;
		265	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
428	AV *av = newAV ();	266	AV *av = newAV ();
429		267
430	av_extend (av, req->result - 1);	268	av_extend (av, req->result - 1);
431		269
432	for (i = 0; i < req->result; ++i)	270	for (i = 0; i < req->result; ++i)
433	{	271	{
434	SV *sv = newSVpv (buf, 0);	272	if (req->int1 & EIO_READDIR_DENTS)
		273	{
		274	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
435		275
		276	if (req->int1 & EIO_READDIR_CUSTOM2)
		277	{
		278	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		279	AV *avent = newAV ();
		280
		281	av_extend (avent, 2);
		282
		283	if (!sv_type [ent->type])
		284	{
		285	sv_type [ent->type] = newSViv (ent->type);
		286	SvREADONLY_on (sv_type [ent->type]);
		287	}
		288
		289	av_store (avent, 0, namesv);
		290	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		291	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		292
		293	av_store (av, i, newRV_noinc ((SV *)avent));
		294	}
		295	else
436	av_store (av, i, sv);	296	av_store (av, i, namesv);
		297
		298	++ent;
		299	}
		300	else
		301	{
		302	SV *name = newSVpv (names, 0);
		303	av_store (av, i, name);
437	buf += SvCUR (sv) + 1;	304	names += SvCUR (name) + 1;
		305	}
438	}	306	}
439		307
440	rv = sv_2mortal (newRV_noinc ((SV *)av));	308	rv = sv_2mortal (newRV_noinc ((SV *)av));
441	}	309	}
442		310
443	PUSHs (rv);	311	PUSHs (rv);
		312
		313	if (req->int1 & EIO_READDIR_CUSTOM1)
		314	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
444	}	315	}
445	break;	316	break;
446		317
447	case REQ_OPEN:	318	case EIO_OPEN:
448	{	319	{
449	/* convert fd to fh */	320	/* convert fd to fh */
450	SV *fh;	321	SV *fh = &PL_sv_undef;
451		322
452	PUSHs (sv_2mortal (newSViv (req->result)));	323	if (req->result >= 0)
453	PUTBACK;	324	{
454	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	325	GV *gv = (GV *)sv_newmortal ();
455	SPAGAIN;	326	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		327	char sym [64];
		328	int symlen;
		329
		330	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		331	gv_init (gv, stash, sym, symlen, 0);
456		332
457	fh = SvREFCNT_inc (POPs);	333	symlen = snprintf (
		334	sym,
		335	sizeof (sym),
		336	"%s&=%d",
		337	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		338	(int)req->result
		339	);
458		340
		341	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		342	fh = (SV *)gv;
		343	}
		344
459	PUSHMARK (SP);	345	PUSHs (fh);
460	XPUSHs (sv_2mortal (fh));
461	}	346	}
462	break;	347	break;
463		348
464	case REQ_GROUP:	349	case EIO_GROUP:
465	req->int1 = 2; /* mark group as finished */	350	req->int1 = 2; /* mark group as finished */
466		351
467	if (req->sv1)	352	if (req->sv1)
468	{	353	{
469	int i;	354	int i;
…		…
473	for (i = 0; i <= AvFILL (av); ++i)	358	for (i = 0; i <= AvFILL (av); ++i)
474	PUSHs (*av_fetch (av, i, 0));	359	PUSHs (*av_fetch (av, i, 0));
475	}	360	}
476	break;	361	break;
477		362
478	case REQ_NOP:	363	case EIO_NOP:
479	case REQ_BUSY:	364	case EIO_BUSY:
480	break;	365	break;
481		366
482	case REQ_READLINK:	367	case EIO_READLINK:
483	if (req->result > 0)	368	if (req->result > 0)
484	{	369	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
485	SvCUR_set (req->sv1, req->result);
486	*SvEND (req->sv1) = 0;
487	PUSHs (req->sv1);
488	}
489	break;	370	break;
490		371
		372	case EIO_STAT:
		373	case EIO_LSTAT:
		374	case EIO_FSTAT:
		375	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		376	PL_laststatval = req->result;
		377	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		378	PUSHs (sv_2mortal (newSViv (req->result)));
		379	break;
		380
491	case REQ_READ:	381	case EIO_READ:
		382	{
492	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	383	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
493	*SvEND (req->sv1) = 0;	384	*SvEND (req->sv2) = 0;
494	/* fall through */	385	SvPOK_only (req->sv2);
		386	SvSETMAGIC (req->sv2);
		387	PUSHs (sv_2mortal (newSViv (req->result)));
		388	}
		389	break;
		390
		391	case EIO_DUP2:
		392	if (req->result > 0)
		393	req->result = 0;
		394	/* FALLTHROUGH */
		395
495	default:	396	default:
496	PUSHs (sv_2mortal (newSViv (req->result)));	397	PUSHs (sv_2mortal (newSViv (req->result)));
497	break;	398	break;
498	}	399	}
499		400
500	errno = req->errorno;	401	errno = req->errorno;
501		402
502	PUTBACK;	403	PUTBACK;
503	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504	SPAGAIN;	405	SPAGAIN;
505		406
506	FREETMPS;	407	FREETMPS;
507	LEAVE;	408	LEAVE;
		409
		410	PUTBACK;
508	}	411	}
509		412
510	if (req->grp)	413	return !!SvTRUE (ERRSV);
511	{
512	aio_req grp = req->grp;
513
514	/* unlink request */
515	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518	if (grp->grp_first == req)
519	grp->grp_first = req->grp_next;
520
521	aio_grp_dec (grp);
522	}
523
524	if (SvTRUE (ERRSV))
525	{
526	req_free (req);
527	croak (0);
528	}
529	}	414	}
530		415
531	static void req_free (aio_req req)	416	static void req_destroy (aio_req req)
532	{	417	{
533	if (req->self)	418	if (req->self)
534	{	419	{
535	sv_unmagic (req->self, PERL_MAGIC_ext);	420	sv_unmagic (req->self, PERL_MAGIC_ext);
536	SvREFCNT_dec (req->self);	421	SvREFCNT_dec (req->self);
537	}	422	}
538		423
539	SvREFCNT_dec (req->fh);
540	SvREFCNT_dec (req->sv1);	424	SvREFCNT_dec (req->sv1);
541	SvREFCNT_dec (req->sv2);	425	SvREFCNT_dec (req->sv2);
542	SvREFCNT_dec (req->callback);	426	SvREFCNT_dec (req->callback);
543	Safefree (req->statdata);
544
545	if (req->type == REQ_READDIR)
546	free (req->ptr2);
547		427
548	Safefree (req);	428	Safefree (req);
549	}	429	}
550		430
551	static void req_cancel_subs (aio_req grp)	431	static void req_cancel_subs (aio_req grp)
552	{	432	{
553	aio_req sub;	433	aio_req sub;
554		434
555	if (grp->type != REQ_GROUP)	435	if (grp->type != EIO_GROUP)
556	return;	436	return;
557		437
558	SvREFCNT_dec (grp->sv2);	438	SvREFCNT_dec (grp->sv2);
559	grp->sv2 = 0;	439	grp->sv2 = 0;
560		440
561	for (sub = grp->grp_first; sub; sub = sub->grp_next)	441	eio_grp_cancel (grp);
562	req_cancel (sub);
563	}	442	}
564		443
565	static void req_cancel (aio_req req)	444	#ifdef USE_SOCKETS_AS_HANDLES
566	{	445	# define TO_SOCKET(x) (win32_get_osfhandle (x))
567	req->flags |= FLAG_CANCELLED;	446	#else
568		447	# define TO_SOCKET(x) (x)
569	req_cancel_subs (req);
570	}
571
572	static void *aio_proc(void *arg);
573
574	static void start_thread (void)
575	{
576	sigset_t fullsigset, oldsigset;
577	pthread_attr_t attr;
578
579	worker *wrk = calloc (1, sizeof (worker));
580
581	if (!wrk)
582	croak ("unable to allocate worker thread data");
583
584	pthread_attr_init (&attr);
585	pthread_attr_setstacksize (&attr, STACKSIZE);
586	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587	#ifdef PTHREAD_SCOPE_PROCESS
588	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589	#endif	448	#endif
590		449
591	sigfillset (&fullsigset);	450	static void
		451	create_respipe (void)
		452	{
		453	int old_readfd = respipe [0];
592		454
593	LOCK (wrklock);	455	if (respipe [1] >= 0)
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	456	respipe_close (TO_SOCKET (respipe [1]));
595		457
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	458	#ifdef _WIN32
		459	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		460	#else
		461	if (pipe (respipe))
		462	#endif
		463	croak ("unable to initialize result pipe");
		464
		465	if (old_readfd >= 0)
597	{	466	{
598	wrk->prev = &wrk_first;	467	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
599	wrk->next = wrk_first.next;	468	croak ("unable to initialize result pipe(2)");
600	wrk_first.next->prev = wrk;	469
601	wrk_first.next = wrk;	470	respipe_close (respipe [0]);
602	++started;	471	respipe [0] = old_readfd;
603	}	472	}
604	else
605	free (wrk);
606		473
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);	474	#ifdef _WIN32
608	UNLOCK (wrklock);	475	int arg = 1;
609	}	476	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		477	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		478	#else
		479	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		480	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		481	#endif
		482	croak ("unable to initialize result pipe(3)");
610		483
611	static void maybe_start_thread ()	484	respipe_osf [0] = TO_SOCKET (respipe [0]);
612	{	485	respipe_osf [1] = TO_SOCKET (respipe [1]);
613	if (get_nthreads () >= wanted)
614	return;
615
616	/* todo: maybe use idle here, but might be less exact */
617	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618	return;
619
620	start_thread ();
621	}	486	}
622		487
623	static void req_send (aio_req req)
624	{
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632
633	maybe_start_thread ();
634	}
635
636	static void end_thread (void)
637	{
638	aio_req req;
639
640	Newz (0, req, 1, aio_cb);
641
642	req->type = REQ_QUIT;
643	req->pri = PRI_MAX + PRI_BIAS;
644
645	LOCK (reqlock);
646	reqq_push (&req_queue, req);
647	pthread_cond_signal (&reqwait);
648	UNLOCK (reqlock);
649
650	LOCK (wrklock);
651	--started;
652	UNLOCK (wrklock);
653	}
654
655	static void set_max_idle (int nthreads)
656	{
657	if (WORDACCESS_UNSAFE) LOCK (reqlock);
658	max_idle = nthreads <= 0 ? 1 : nthreads;
659	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660	}
661
662	static void min_parallel (int nthreads)
663	{
664	if (wanted < nthreads)
665	wanted = nthreads;
666	}
667
668	static void max_parallel (int nthreads)
669	{
670	if (wanted > nthreads)
671	wanted = nthreads;
672
673	while (started > wanted)
674	end_thread ();
675	}
676
677	static void poll_wait ()	488	static void poll_wait (void)
678	{	489	{
679	fd_set rfd;	490	fd_set rfd;
680		491
681	while (nreqs)	492	while (eio_nreqs ())
682	{	493	{
683	int size;	494	int size;
684	if (WORDACCESS_UNSAFE) LOCK (reslock);	495
		496	X_LOCK (reslock);
685	size = res_queue.size;	497	size = res_queue.size;
686	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	498	X_UNLOCK (reslock);
687		499
688	if (size)	500	if (size)
689	return;	501	return;
690		502
691	maybe_start_thread ();	503	etp_maybe_start_thread ();
692		504
693	FD_ZERO(&rfd);	505	FD_ZERO (&rfd);
694	FD_SET(respipe [0], &rfd);	506	FD_SET (respipe [0], &rfd);
695		507
696	select (respipe [0] + 1, &rfd, 0, 0, 0);	508	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
697	}	509	}
698	}	510	}
699		511
700	static int poll_cb ()	512	static int poll_cb (void)
701	{	513	{
702	dSP;
703	int count = 0;
704	int maxreqs = max_poll_reqs;
705	int do_croak = 0;
706	struct timeval tv_start, tv_now;
707	aio_req req;
708
709	if (max_poll_time)
710	gettimeofday (&tv_start, 0);
711
712	for (;;)	514	for (;;)
713	{	515	{
714	for (;;)	516	int res = eio_poll ();
715	{
716	maybe_start_thread ();
717		517
718	LOCK (reslock);	518	if (res > 0)
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [32];
729	while (read (respipe [0], buf, 32) == 32)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	req_invoke (req);
749
750	count++;
751	}
752
753	req_free (req);
754
755	if (maxreqs && !--maxreqs)
756	break;
757
758	if (max_poll_time)
759	{
760	gettimeofday (&tv_now, 0);
761
762	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763	break;
764	}
765	}
766
767	if (nreqs <= max_outstanding)
768	break;	519	croak (0);
		520
		521	if (!max_outstanding || max_outstanding > eio_nreqs ())
		522	return res;
769		523
770	poll_wait ();	524	poll_wait ();
771
772	++maxreqs;
773	}	525	}
774
775	return count;
776	}	526	}
777		527
778	static void create_pipe ()	528	static void atfork_child (void)
779	{	529	{
780	if (pipe (respipe))	530	create_respipe ();
781	croak ("unable to initialize result pipe");
782
783	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784	croak ("cannot set result pipe to nonblocking mode");
785
786	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787	croak ("cannot set result pipe to nonblocking mode");
788	}	531	}
789		532
790	/*****************************************************************************/	533	static SV *
791	/* work around various missing functions */	534	get_cb (SV *cb_sv)
792
793	#if !HAVE_PREADWRITE
794	# define pread aio_pread
795	# define pwrite aio_pwrite
796
797	/*
798	* make our pread/pwrite safe against themselves, but not against
799	* normal read/write by using a mutex. slows down execution a lot,
800	* but that's your problem, not mine.
801	*/
802	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805	{	535	{
806	ssize_t res;	536	HV *st;
807	off_t ooffset;	537	GV *gvp;
		538	CV *cv;
808		539
809	LOCK (preadwritelock);	540	if (!SvOK (cb_sv))
810	ooffset = lseek (fd, 0, SEEK_CUR);
811	lseek (fd, offset, SEEK_SET);
812	res = read (fd, buf, count);
813	lseek (fd, ooffset, SEEK_SET);
814	UNLOCK (preadwritelock);
815
816	return res;
817	}
818
819	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
820	{
821	ssize_t res;
822	off_t ooffset;
823
824	LOCK (preadwritelock);
825	ooffset = lseek (fd, 0, SEEK_CUR);
826	lseek (fd, offset, SEEK_SET);
827	res = write (fd, buf, count);
828	lseek (fd, offset, SEEK_SET);
829	UNLOCK (preadwritelock);
830
831	return res;
832	}
833	#endif
834
835	#if !HAVE_FDATASYNC
836	# define fdatasync fsync
837	#endif
838
839	#if !HAVE_READAHEAD
840	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841
842	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
843	{
844	dBUF;
845
846	while (count > 0)
847	{
848	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849
850	pread (fd, aio_buf, len, offset);
851	offset += len;
852	count -= len;
853	}
854
855	errno = 0;
856	}
857
858	#endif
859
860	#if !HAVE_READDIR_R
861	# define readdir_r aio_readdir_r
862
863	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866	{
867	struct dirent *e;
868	int errorno;
869
870	LOCK (readdirlock);
871
872	e = readdir (dirp);
873	errorno = errno;
874
875	if (e)
876	{
877	*res = ent;
878	strcpy (ent->d_name, e->d_name);
879	}
880	else
881	*res = 0;
882
883	UNLOCK (readdirlock);
884
885	errno = errorno;
886	return e ? 0 : -1;
887	}
888	#endif
889
890	/* sendfile always needs emulation */
891	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
892	{
893	ssize_t res;
894
895	if (!count)
896	return 0;	541	return 0;
897		542
898	#if HAVE_SENDFILE	543	cv = sv_2cv (cb_sv, &st, &gvp, 0);
899	# if __linux
900	res = sendfile (ofd, ifd, &offset, count);
901		544
902	# elif __freebsd	545	if (!cv)
903	/*	546	croak ("IO::AIO callback must be undef or a CODE reference");
904	* Of course, the freebsd sendfile is a dire hack with no thoughts
905	* wasted on making it similar to other I/O functions.
906	*/
907	{
908	off_t sbytes;
909	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910		547
911	if (res < 0 && sbytes)	548	return (SV *)cv;
912	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
913	res = sbytes;
914	}
915
916	# elif __hpux
917	res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919	# elif __solaris
920	{
921	struct sendfilevec vec;
922	size_t sbytes;
923
924	vec.sfv_fd = ifd;
925	vec.sfv_flag = 0;
926	vec.sfv_off = offset;
927	vec.sfv_len = count;
928
929	res = sendfilev (ofd, &vec, 1, &sbytes);
930
931	if (res < 0 && sbytes)
932	res = sbytes;
933	}
934
935	# endif
936	#else
937	res = -1;
938	errno = ENOSYS;
939	#endif
940
941	if (res < 0
942	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
943	#if __solaris
944	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
945	#endif
946	)
947	)
948	{
949	/* emulate sendfile. this is a major pain in the ass */
950	dBUF;
951
952	res = 0;
953
954	while (count)
955	{
956	ssize_t cnt;
957
958	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
959
960	if (cnt <= 0)
961	{
962	if (cnt && !res) res = -1;
963	break;
964	}
965
966	cnt = write (ofd, aio_buf, cnt);
967
968	if (cnt <= 0)
969	{
970	if (cnt && !res) res = -1;
971	break;
972	}
973
974	offset += cnt;
975	res += cnt;
976	count -= cnt;
977	}
978	}
979
980	return res;
981	}
982
983	/* read a full directory */
984	static void scandir_ (aio_req req, worker *self)
985	{
986	DIR *dirp;
987	union
988	{
989	struct dirent d;
990	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991	} *u;
992	struct dirent *entp;
993	char *name, *names;
994	int memlen = 4096;
995	int memofs = 0;
996	int res = 0;
997	int errorno;
998
999	LOCK (wrklock);
1000	self->dirp = dirp = opendir (req->ptr1);
1001	self->dbuf = u = malloc (sizeof (*u));
1002	req->ptr2 = names = malloc (memlen);
1003	UNLOCK (wrklock);
1004
1005	if (dirp && u && names)
1006	for (;;)
1007	{
1008	errno = 0;
1009	readdir_r (dirp, &u->d, &entp);
1010
1011	if (!entp)
1012	break;
1013
1014	name = entp->d_name;
1015
1016	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017	{
1018	int len = strlen (name) + 1;
1019
1020	res++;
1021
1022	while (memofs + len > memlen)
1023	{
1024	memlen *= 2;
1025	LOCK (wrklock);
1026	req->ptr2 = names = realloc (names, memlen);
1027	UNLOCK (wrklock);
1028
1029	if (!names)
1030	break;
1031	}
1032
1033	memcpy (names + memofs, name, len);
1034	memofs += len;
1035	}
1036	}
1037
1038	if (errno)
1039	res = -1;
1040
1041	req->result = res;
1042	}
1043
1044	/*****************************************************************************/
1045
1046	static void *aio_proc (void *thr_arg)
1047	{
1048	aio_req req;
1049	struct timespec ts;
1050	worker *self = (worker *)thr_arg;
1051
1052	/* try to distribute timeouts somewhat evenly */
1053	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054	* (1000000000UL / 1024UL);
1055
1056	for (;;)
1057	{
1058	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060	LOCK (reqlock);
1061
1062	for (;;)
1063	{
1064	self->req = req = reqq_shift (&req_queue);
1065
1066	if (req)
1067	break;
1068
1069	++idle;
1070
1071	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072	== ETIMEDOUT)
1073	{
1074	if (idle > max_idle)
1075	{
1076	--idle;
1077	UNLOCK (reqlock);
1078	LOCK (wrklock);
1079	--started;
1080	UNLOCK (wrklock);
1081	goto quit;
1082	}
1083
1084	/* we are allowed to idle, so do so without any timeout */
1085	pthread_cond_wait (&reqwait, &reqlock);
1086	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087	}
1088
1089	--idle;
1090	}
1091
1092	--nready;
1093
1094	UNLOCK (reqlock);
1095
1096	errno = 0; /* strictly unnecessary */
1097
1098	if (!(req->flags & FLAG_CANCELLED))
1099	switch (req->type)
1100	{
1101	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107	case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108	case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109	case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112	case REQ_CLOSE: req->result = close (req->int1); break;
1113	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122	case REQ_FSYNC: req->result = fsync (req->int1); break;
1123	case REQ_READDIR: scandir_ (req, self); break;
1124
1125	case REQ_BUSY:
1126	{
1127	struct timeval tv;
1128
1129	tv.tv_sec = req->int1;
1130	tv.tv_usec = req->int2;
1131
1132	req->result = select (0, 0, 0, 0, &tv);
1133	}
1134
1135	case REQ_GROUP:
1136	case REQ_NOP:
1137	break;
1138
1139	case REQ_QUIT:
1140	goto quit;
1141
1142	default:
1143	req->result = ENOSYS;
1144	break;
1145	}
1146
1147	req->errorno = errno;
1148
1149	LOCK (reslock);
1150
1151	++npending;
1152
1153	if (!reqq_push (&res_queue, req))
1154	/* write a dummy byte to the pipe so fh becomes ready */
1155	write (respipe [1], &respipe, 1);
1156
1157	self->req = 0;
1158	worker_clear (self);
1159
1160	UNLOCK (reslock);
1161	}
1162
1163	quit:
1164	LOCK (wrklock);
1165	worker_free (self);
1166	UNLOCK (wrklock);
1167
1168	return 0;
1169	}
1170
1171	/*****************************************************************************/
1172
1173	static void atfork_prepare (void)
1174	{
1175	LOCK (wrklock);
1176	LOCK (reqlock);
1177	LOCK (reslock);
1178	#if !HAVE_PREADWRITE
1179	LOCK (preadwritelock);
1180	#endif
1181	#if !HAVE_READDIR_R
1182	LOCK (readdirlock);
1183	#endif
1184	}
1185
1186	static void atfork_parent (void)
1187	{
1188	#if !HAVE_READDIR_R
1189	UNLOCK (readdirlock);
1190	#endif
1191	#if !HAVE_PREADWRITE
1192	UNLOCK (preadwritelock);
1193	#endif
1194	UNLOCK (reslock);
1195	UNLOCK (reqlock);
1196	UNLOCK (wrklock);
1197	}
1198
1199	static void atfork_child (void)
1200	{
1201	aio_req prv;
1202
1203	while (prv = reqq_shift (&req_queue))
1204	req_free (prv);
1205
1206	while (prv = reqq_shift (&res_queue))
1207	req_free (prv);
1208
1209	while (wrk_first.next != &wrk_first)
1210	{
1211	worker *wrk = wrk_first.next;
1212
1213	if (wrk->req)
1214	req_free (wrk->req);
1215
1216	worker_clear (wrk);
1217	worker_free (wrk);
1218	}
1219
1220	started = 0;
1221	idle = 0;
1222	nreqs = 0;
1223	nready = 0;
1224	npending = 0;
1225
1226	close (respipe [0]);
1227	close (respipe [1]);
1228	create_pipe ();
1229
1230	atfork_parent ();
1231	}	549	}
1232		550
1233	#define dREQ \	551	#define dREQ \
		552	SV *cb_cv; \
1234	aio_req req; \	553	aio_req req; \
1235	int req_pri = next_pri; \	554	int req_pri = next_pri; \
1236	next_pri = DEFAULT_PRI + PRI_BIAS; \	555	next_pri = EIO_PRI_DEFAULT; \
1237	\	556	\
1238	if (SvOK (callback) && !SvROK (callback)) \	557	cb_cv = get_cb (callback); \
1239	croak ("callback must be undef or of reference type"); \
1240	\	558	\
1241	Newz (0, req, 1, aio_cb); \	559	Newz (0, req, 1, eio_req); \
1242	if (!req) \	560	if (!req) \
1243	croak ("out of memory during aio_req allocation"); \	561	croak ("out of memory during eio_req allocation"); \
1244	\	562	\
1245	req->callback = newSVsv (callback); \	563	req->callback = SvREFCNT_inc (cb_cv); \
1246	req->pri = req_pri	564	req->pri = req_pri
1247		565
1248	#define REQ_SEND \	566	#define REQ_SEND \
		567	PUTBACK; \
1249	req_send (req); \	568	req_submit (req); \
		569	SPAGAIN; \
1250	\	570	\
1251	if (GIMME_V != G_VOID) \	571	if (GIMME_V != G_VOID) \
1252	XPUSHs (req_sv (req, AIO_REQ_KLASS));	572	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1253		573
		574	static int
		575	extract_fd (SV *fh, int wr)
		576	{
		577	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		578
		579	if (fd < 0)
		580	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		581
		582	return fd;
		583	}
		584
1254	MODULE = IO::AIO PACKAGE = IO::AIO	585	MODULE = IO::AIO PACKAGE = IO::AIO
1255		586
1256	PROTOTYPES: ENABLE	587	PROTOTYPES: ENABLE
1257		588
1258	BOOT:	589	BOOT:
1259	{	590	{
		591	static const struct {
		592	const char *name;
		593	IV iv;
		594	} *civ, const_iv[] = {
		595	# define const_iv(name, value) { # name, (IV) value },
		596	# define const_eio(name) { # name, (IV) EIO_ ## name },
		597	const_iv (EXDEV , EXDEV)
		598	const_iv (ENOSYS , ENOSYS)
		599	const_iv (O_RDONLY, O_RDONLY)
		600	const_iv (O_WRONLY, O_WRONLY)
		601	const_iv (O_CREAT , O_CREAT)
		602	const_iv (O_TRUNC , O_TRUNC)
		603	#ifndef _WIN32
		604	const_iv (S_IFIFO , S_IFIFO)
		605	#endif
		606	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		607	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		608	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		609	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		610	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		611	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		612
		613	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		614	const_eio (SYNC_FILE_RANGE_WRITE)
		615	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		616
		617	const_eio (READDIR_DENTS)
		618	const_eio (READDIR_DIRS_FIRST)
		619	const_eio (READDIR_STAT_ORDER)
		620	const_eio (READDIR_FOUND_UNKNOWN)
		621
		622	const_eio (DT_UNKNOWN)
		623	const_eio (DT_FIFO)
		624	const_eio (DT_CHR)
		625	const_eio (DT_DIR)
		626	const_eio (DT_BLK)
		627	const_eio (DT_REG)
		628	const_eio (DT_LNK)
		629	const_eio (DT_SOCK)
		630	const_eio (DT_WHT)
		631	};
		632
1260	HV *stash = gv_stashpv ("IO::AIO", 1);	633	stash = gv_stashpv ("IO::AIO", 1);
1261		634
1262	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	635	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1263	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	636	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1264	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1267	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1268		637
1269	create_pipe ();	638	create_respipe ();
1270	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	639
		640	if (eio_init (want_poll, done_poll) < 0)
		641	croak ("IO::AIO: unable to initialise eio library");
		642
		643	/* atfork child called in fifo order, so before eio's handler */
		644	X_THREAD_ATFORK (0, 0, atfork_child);
1271	}	645	}
1272		646
1273	void	647	void
1274	max_poll_reqs (int nreqs)	648	max_poll_reqs (int nreqs)
1275	PROTOTYPE: $	649	PROTOTYPE: $
1276	CODE:	650	CODE:
1277	max_poll_reqs = nreqs;	651	eio_set_max_poll_reqs (nreqs);
1278		652
1279	void	653	void
1280	max_poll_time (double nseconds)	654	max_poll_time (double nseconds)
1281	PROTOTYPE: $	655	PROTOTYPE: $
1282	CODE:	656	CODE:
1283	max_poll_time = nseconds * AIO_TICKS;	657	eio_set_max_poll_time (nseconds);
1284		658
1285	void	659	void
1286	min_parallel (int nthreads)	660	min_parallel (int nthreads)
1287	PROTOTYPE: $	661	PROTOTYPE: $
		662	CODE:
		663	eio_set_min_parallel (nthreads);
1288		664
1289	void	665	void
1290	max_parallel (int nthreads)	666	max_parallel (int nthreads)
1291	PROTOTYPE: $	667	PROTOTYPE: $
		668	CODE:
		669	eio_set_max_parallel (nthreads);
1292		670
1293	void	671	void
1294	max_idle (int nthreads)	672	max_idle (int nthreads)
1295	PROTOTYPE: $	673	PROTOTYPE: $
1296	CODE:	674	CODE:
1297	set_max_idle (nthreads);	675	eio_set_max_idle (nthreads);
1298		676
1299	int	677	void
1300	max_outstanding (int maxreqs)	678	max_outstanding (int maxreqs)
1301	PROTOTYPE: $	679	PROTOTYPE: $
1302	CODE:	680	CODE:
1303	RETVAL = max_outstanding;
1304	max_outstanding = maxreqs;	681	max_outstanding = maxreqs;
1305	OUTPUT:
1306	RETVAL
1307		682
1308	void	683	void
1309	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	684	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1310	SV * pathname
1311	int flags
1312	int mode
1313	SV * callback
1314	PROTOTYPE: $$$;$	685	PROTOTYPE: $$$;$
1315	PPCODE:	686	PPCODE:
1316	{	687	{
1317	dREQ;	688	dREQ;
1318		689
1319	req->type = REQ_OPEN;	690	req->type = EIO_OPEN;
1320	req->sv1 = newSVsv (pathname);	691	req->sv1 = newSVsv (pathname);
1321	req->ptr1 = SvPVbyte_nolen (pathname);	692	req->ptr1 = SvPVbyte_nolen (req->sv1);
1322	req->int1 = flags;	693	req->int1 = flags;
1323	req->mode = mode;	694	req->int2 = mode;
1324		695
1325	REQ_SEND;	696	REQ_SEND;
1326	}	697	}
1327		698
1328	void	699	void
1329	aio_close (fh,callback=&PL_sv_undef)	700	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330	SV * fh
1331	SV * callback
1332	PROTOTYPE: $;$	701	PROTOTYPE: $;$
1333	ALIAS:	702	ALIAS:
1334	aio_close = REQ_CLOSE
1335	aio_fsync = REQ_FSYNC	703	aio_fsync = EIO_FSYNC
1336	aio_fdatasync = REQ_FDATASYNC	704	aio_fdatasync = EIO_FDATASYNC
1337	PPCODE:	705	PPCODE:
1338	{	706	{
		707	int fd = extract_fd (fh, 0);
1339	dREQ;	708	dREQ;
1340		709
1341	req->type = ix;	710	req->type = ix;
1342	req->fh = newSVsv (fh);	711	req->sv1 = newSVsv (fh);
1343	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	712	req->int1 = fd;
1344		713
1345	REQ_SEND (req);	714	REQ_SEND (req);
1346	}	715	}
1347		716
1348	void	717	void
		718	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		719	PROTOTYPE: $$$$;$
		720	PPCODE:
		721	{
		722	int fd = extract_fd (fh, 0);
		723	dREQ;
		724
		725	req->type = EIO_SYNC_FILE_RANGE;
		726	req->sv1 = newSVsv (fh);
		727	req->int1 = fd;
		728	req->offs = offset;
		729	req->size = nbytes;
		730	req->int2 = flags;
		731
		732	REQ_SEND (req);
		733	}
		734
		735	void
		736	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		737	PROTOTYPE: $;$
		738	PPCODE:
		739	{
		740	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		741	int fd = extract_fd (fh, 0);
		742	dREQ;
		743
		744	if (close_pipe < 0)
		745	{
		746	int pipefd [2];
		747
		748	if (pipe (pipefd) < 0
		749	|| close (pipefd [1]) < 0
		750	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		751	abort (); /*D*/
		752
		753	close_pipe = pipefd [0];
		754	}
		755
		756	req->type = EIO_DUP2;
		757	req->int1 = close_pipe;
		758	req->sv2 = newSVsv (fh);
		759	req->int2 = fd;
		760
		761	REQ_SEND (req);
		762	}
		763
		764	void
1349	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	765	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350	SV * fh
1351	UV offset
1352	UV length
1353	SV * data
1354	UV dataoffset
1355	SV * callback
1356	ALIAS:	766	ALIAS:
1357	aio_read = REQ_READ	767	aio_read = EIO_READ
1358	aio_write = REQ_WRITE	768	aio_write = EIO_WRITE
1359	PROTOTYPE: $$$$$;$	769	PROTOTYPE: $$$$$;$
1360	PPCODE:	770	PPCODE:
1361	{	771	{
1362	STRLEN svlen;	772	STRLEN svlen;
		773	int fd = extract_fd (fh, ix == EIO_WRITE);
1363	char *svptr = SvPVbyte (data, svlen);	774	char *svptr = SvPVbyte (data, svlen);
1364		775	UV len = SvUV (length);
1365	SvUPGRADE (data, SVt_PV);
1366	SvPOK_on (data);
1367		776
1368	if (dataoffset < 0)	777	if (dataoffset < 0)
1369	dataoffset += svlen;	778	dataoffset += svlen;
1370		779
1371	if (dataoffset < 0 || dataoffset > svlen)	780	if (dataoffset < 0 || dataoffset > svlen)
1372	croak ("data offset outside of string");	781	croak ("dataoffset outside of data scalar");
1373		782
1374	if (ix == REQ_WRITE)	783	if (ix == EIO_WRITE)
1375	{	784	{
1376	/* write: check length and adjust. */	785	/* write: check length and adjust. */
1377	if (length < 0 || length + dataoffset > svlen)	786	if (!SvOK (length) || len + dataoffset > svlen)
1378	length = svlen - dataoffset;	787	len = svlen - dataoffset;
1379	}	788	}
1380	else	789	else
1381	{	790	{
1382	/* read: grow scalar as necessary */	791	/* read: check type and grow scalar as necessary */
		792	SvUPGRADE (data, SVt_PV);
1383	svptr = SvGROW (data, length + dataoffset);	793	svptr = SvGROW (data, len + dataoffset + 1);
1384	}	794	}
1385
1386	if (length < 0)
1387	croak ("length must not be negative");
1388		795
1389	{	796	{
1390	dREQ;	797	dREQ;
1391		798
1392	req->type = ix;	799	req->type = ix;
1393	req->fh = newSVsv (fh);	800	req->sv1 = newSVsv (fh);
1394	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	801	req->int1 = fd;
1395	: IoOFP (sv_2io (fh)));	802	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1396	req->offs = offset;
1397	req->size = length;	803	req->size = len;
1398	req->sv1 = SvREFCNT_inc (data);	804	req->sv2 = SvREFCNT_inc (data);
1399	req->ptr1 = (char *)svptr + dataoffset;	805	req->ptr2 = (char *)svptr + dataoffset;
1400	req->stroffset = dataoffset;	806	req->stroffset = dataoffset;
1401		807
1402	if (!SvREADONLY (data))	808	if (!SvREADONLY (data))
1403	{	809	{
1404	SvREADONLY_on (data);	810	SvREADONLY_on (data);
1405	req->flags |= FLAG_DATA_RO_OFF;	811	req->flags |= FLAG_SV2_RO_OFF;
1406	}	812	}
1407		813
1408	REQ_SEND;	814	REQ_SEND;
1409	}	815	}
1410	}	816	}
1411		817
1412	void	818	void
1413	aio_readlink (path,callback=&PL_sv_undef)	819	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1414	SV * path
1415	SV * callback
1416	PROTOTYPE: $$;$	820	PROTOTYPE: $$;$
1417	PPCODE:	821	PPCODE:
1418	{	822	{
1419	SV *data;	823	SV *data;
1420	dREQ;	824	dREQ;
1421		825
1422	data = newSV (NAME_MAX);
1423	SvPOK_on (data);
1424
1425	req->type = REQ_READLINK;	826	req->type = EIO_READLINK;
1426	req->fh = newSVsv (path);	827	req->sv1 = newSVsv (path);
1427	req->ptr2 = SvPVbyte_nolen (path);
1428	req->sv1 = data;
1429	req->ptr1 = SvPVbyte_nolen (data);	828	req->ptr1 = SvPVbyte_nolen (req->sv1);
1430		829
1431	REQ_SEND;	830	REQ_SEND;
1432	}	831	}
1433		832
1434	void	833	void
1435	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	834	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1436	SV * out_fh
1437	SV * in_fh
1438	UV in_offset
1439	UV length
1440	SV * callback
1441	PROTOTYPE: $$$$;$	835	PROTOTYPE: $$$$;$
1442	PPCODE:	836	PPCODE:
1443	{	837	{
		838	int ifd = extract_fd (in_fh , 0);
		839	int ofd = extract_fd (out_fh, 0);
1444	dREQ;	840	dREQ;
1445		841
1446	req->type = REQ_SENDFILE;	842	req->type = EIO_SENDFILE;
1447	req->fh = newSVsv (out_fh);	843	req->sv1 = newSVsv (out_fh);
1448	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	844	req->int1 = ofd;
1449	req->sv2 = newSVsv (in_fh);	845	req->sv2 = newSVsv (in_fh);
1450	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	846	req->int2 = ifd;
1451	req->offs = in_offset;	847	req->offs = in_offset;
1452	req->size = length;	848	req->size = length;
1453		849
1454	REQ_SEND;	850	REQ_SEND;
1455	}	851	}
1456		852
1457	void	853	void
1458	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	854	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1459	SV * fh
1460	UV offset
1461	IV length
1462	SV * callback
1463	PROTOTYPE: $$$;$	855	PROTOTYPE: $$$;$
1464	PPCODE:	856	PPCODE:
1465	{	857	{
		858	int fd = extract_fd (fh, 0);
1466	dREQ;	859	dREQ;
1467		860
1468	req->type = REQ_READAHEAD;	861	req->type = EIO_READAHEAD;
1469	req->fh = newSVsv (fh);	862	req->sv1 = newSVsv (fh);
1470	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	863	req->int1 = fd;
1471	req->offs = offset;	864	req->offs = offset;
1472	req->size = length;	865	req->size = length;
1473		866
1474	REQ_SEND;	867	REQ_SEND;
1475	}	868	}
1476		869
1477	void	870	void
1478	aio_stat (fh_or_path,callback=&PL_sv_undef)	871	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479	SV * fh_or_path
1480	SV * callback
1481	ALIAS:	872	ALIAS:
1482	aio_stat = REQ_STAT	873	aio_stat = EIO_STAT
1483	aio_lstat = REQ_LSTAT	874	aio_lstat = EIO_LSTAT
1484	PPCODE:	875	PPCODE:
1485	{	876	{
1486	dREQ;	877	dREQ;
1487		878
1488	New (0, req->statdata, 1, Stat_t);	879	req->sv1 = newSVsv (fh_or_path);
1489	if (!req->statdata)
1490	{
1491	req_free (req);
1492	croak ("out of memory during aio_req->statdata allocation");
1493	}
1494		880
1495	if (SvPOK (fh_or_path))	881	if (SvPOK (req->sv1))
1496	{	882	{
1497	req->type = ix;	883	req->type = ix;
1498	req->sv1 = newSVsv (fh_or_path);
1499	req->ptr1 = SvPVbyte_nolen (fh_or_path);	884	req->ptr1 = SvPVbyte_nolen (req->sv1);
1500	}	885	}
1501	else	886	else
1502	{	887	{
1503	req->type = REQ_FSTAT;	888	req->type = EIO_FSTAT;
1504	req->fh = newSVsv (fh_or_path);
1505	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506	}	890	}
1507		891
1508	REQ_SEND;	892	REQ_SEND;
1509	}	893	}
1510		894
1511	void	895	void
		896	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	dREQ;
		900
		901	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		902	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		903	req->sv1 = newSVsv (fh_or_path);
		904
		905	if (SvPOK (req->sv1))
		906	{
		907	req->type = EIO_UTIME;
		908	req->ptr1 = SvPVbyte_nolen (req->sv1);
		909	}
		910	else
		911	{
		912	req->type = EIO_FUTIME;
		913	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		914	}
		915
		916	REQ_SEND;
		917	}
		918
		919	void
		920	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		921	PPCODE:
		922	{
		923	dREQ;
		924
		925	req->sv1 = newSVsv (fh_or_path);
		926	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		927
		928	if (SvPOK (req->sv1))
		929	{
		930	req->type = EIO_TRUNCATE;
		931	req->ptr1 = SvPVbyte_nolen (req->sv1);
		932	}
		933	else
		934	{
		935	req->type = EIO_FTRUNCATE;
		936	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		937	}
		938
		939	REQ_SEND;
		940	}
		941
		942	void
		943	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		944	ALIAS:
		945	aio_chmod = EIO_CHMOD
		946	aio_mkdir = EIO_MKDIR
		947	PPCODE:
		948	{
		949	dREQ;
		950
		951	req->int2 = mode;
		952	req->sv1 = newSVsv (fh_or_path);
		953
		954	if (SvPOK (req->sv1))
		955	{
		956	req->type = ix;
		957	req->ptr1 = SvPVbyte_nolen (req->sv1);
		958	}
		959	else
		960	{
		961	req->type = EIO_FCHMOD;
		962	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		963	}
		964
		965	REQ_SEND;
		966	}
		967
		968	void
		969	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		970	PPCODE:
		971	{
		972	dREQ;
		973
		974	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		975	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		976	req->sv1 = newSVsv (fh_or_path);
		977
		978	if (SvPOK (req->sv1))
		979	{
		980	req->type = EIO_CHOWN;
		981	req->ptr1 = SvPVbyte_nolen (req->sv1);
		982	}
		983	else
		984	{
		985	req->type = EIO_FCHOWN;
		986	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		987	}
		988
		989	REQ_SEND;
		990	}
		991
		992	void
		993	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = EIO_READDIR;
		999	req->sv1 = newSVsv (pathname);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1002
		1003	if (flags & EIO_READDIR_DENTS)
		1004	req->int1 |= EIO_READDIR_CUSTOM2;
		1005
		1006	REQ_SEND;
		1007	}
		1008
		1009	void
1512	aio_unlink (pathname,callback=&PL_sv_undef)	1010	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513	SV * pathname
1514	SV * callback
1515	ALIAS:	1011	ALIAS:
1516	aio_unlink = REQ_UNLINK	1012	aio_unlink = EIO_UNLINK
1517	aio_rmdir = REQ_RMDIR	1013	aio_rmdir = EIO_RMDIR
1518	aio_readdir = REQ_READDIR	1014	aio_readdir = EIO_READDIR
1519	PPCODE:	1015	PPCODE:
1520	{	1016	{
1521	dREQ;	1017	dREQ;
1522		1018
1523	req->type = ix;	1019	req->type = ix;
1524	req->sv1 = newSVsv (pathname);	1020	req->sv1 = newSVsv (pathname);
1525	req->ptr1 = SvPVbyte_nolen (pathname);	1021	req->ptr1 = SvPVbyte_nolen (req->sv1);
1526		1022
1527	REQ_SEND;	1023	REQ_SEND;
1528	}	1024	}
1529		1025
1530	void	1026	void
1531	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1027	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1532	SV * oldpath
1533	SV * newpath
1534	SV * callback
1535	ALIAS:	1028	ALIAS:
1536	aio_link = REQ_LINK	1029	aio_link = EIO_LINK
1537	aio_symlink = REQ_SYMLINK	1030	aio_symlink = EIO_SYMLINK
1538	aio_rename = REQ_RENAME	1031	aio_rename = EIO_RENAME
1539	PPCODE:	1032	PPCODE:
1540	{	1033	{
1541	dREQ;	1034	dREQ;
1542		1035
1543	req->type = ix;	1036	req->type = ix;
1544	req->fh = newSVsv (oldpath);	1037	req->sv1 = newSVsv (oldpath);
1545	req->ptr2 = SvPVbyte_nolen (req->fh);	1038	req->ptr1 = SvPVbyte_nolen (req->sv1);
1546	req->sv1 = newSVsv (newpath);	1039	req->sv2 = newSVsv (newpath);
1547	req->ptr1 = SvPVbyte_nolen (newpath);	1040	req->ptr2 = SvPVbyte_nolen (req->sv2);
1548		1041
1549	REQ_SEND;	1042	REQ_SEND;
1550	}	1043	}
1551		1044
1552	void	1045	void
1553	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1046	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1554	SV * pathname
1555	SV * callback
1556	UV mode
1557	UV dev
1558	PPCODE:	1047	PPCODE:
1559	{	1048	{
1560	dREQ;	1049	dREQ;
1561		1050
1562	req->type = REQ_MKNOD;	1051	req->type = EIO_MKNOD;
1563	req->sv1 = newSVsv (pathname);	1052	req->sv1 = newSVsv (pathname);
1564	req->ptr1 = SvPVbyte_nolen (pathname);	1053	req->ptr1 = SvPVbyte_nolen (req->sv1);
1565	req->mode = (mode_t)mode;	1054	req->int2 = (mode_t)mode;
1566	req->offs = dev;	1055	req->offs = dev;
1567		1056
1568	REQ_SEND;	1057	REQ_SEND;
1569	}	1058	}
1570		1059
1571	void	1060	void
1572	aio_busy (delay,callback=&PL_sv_undef)	1061	aio_busy (double delay, SV *callback=&PL_sv_undef)
1573	double delay
1574	SV * callback
1575	PPCODE:	1062	PPCODE:
1576	{	1063	{
1577	dREQ;	1064	dREQ;
1578		1065
1579	req->type = REQ_BUSY;	1066	req->type = EIO_BUSY;
1580	req->int1 = delay < 0. ? 0 : delay;	1067	req->nv1 = delay < 0. ? 0. : delay;
1581	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582		1068
1583	REQ_SEND;	1069	REQ_SEND;
1584	}	1070	}
1585		1071
1586	void	1072	void
1587	aio_group (callback=&PL_sv_undef)	1073	aio_group (SV *callback=&PL_sv_undef)
1588	SV * callback
1589	PROTOTYPE: ;$	1074	PROTOTYPE: ;$
1590	PPCODE:	1075	PPCODE:
1591	{	1076	{
1592	dREQ;	1077	dREQ;
1593		1078
1594	req->type = REQ_GROUP;	1079	req->type = EIO_GROUP;
1595		1080
1596	req_send (req);	1081	req_submit (req);
1597	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1082	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1598	}	1083	}
1599		1084
1600	void	1085	void
1601	aio_nop (callback=&PL_sv_undef)	1086	aio_nop (SV *callback=&PL_sv_undef)
1602	SV * callback	1087	ALIAS:
		1088	aio_nop = EIO_NOP
		1089	aio_sync = EIO_SYNC
1603	PPCODE:	1090	PPCODE:
1604	{	1091	{
1605	dREQ;	1092	dREQ;
1606		1093
1607	req->type = REQ_NOP;	1094	req->type = ix;
1608		1095
1609	REQ_SEND;	1096	REQ_SEND;
1610	}	1097	}
1611		1098
1612	int	1099	int
1613	aioreq_pri (int pri = 0)	1100	aioreq_pri (int pri = 0)
1614	PROTOTYPE: ;$	1101	PROTOTYPE: ;$
1615	CODE:	1102	CODE:
1616	RETVAL = next_pri - PRI_BIAS;	1103	RETVAL = next_pri;
1617	if (items > 0)	1104	if (items > 0)
1618	{	1105	{
1619	if (pri < PRI_MIN) pri = PRI_MIN;	1106	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620	if (pri > PRI_MAX) pri = PRI_MAX;	1107	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621	next_pri = pri + PRI_BIAS;	1108	next_pri = pri;
1622	}	1109	}
1623	OUTPUT:	1110	OUTPUT:
1624	RETVAL	1111	RETVAL
1625		1112
1626	void	1113	void
1627	aioreq_nice (int nice = 0)	1114	aioreq_nice (int nice = 0)
1628	CODE:	1115	CODE:
1629	nice = next_pri - nice;	1116	nice = next_pri - nice;
1630	if (nice < PRI_MIN) nice = PRI_MIN;	1117	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631	if (nice > PRI_MAX) nice = PRI_MAX;	1118	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632	next_pri = nice + PRI_BIAS;	1119	next_pri = nice;
1633		1120
1634	void	1121	void
1635	flush ()	1122	flush ()
1636	PROTOTYPE:	1123	PROTOTYPE:
1637	CODE:	1124	CODE:
1638	while (nreqs)	1125	while (eio_nreqs ())
1639	{	1126	{
1640	poll_wait ();	1127	poll_wait ();
1641	poll_cb (0);	1128	poll_cb ();
1642	}	1129	}
1643		1130
1644	void	1131	int
1645	poll()	1132	poll()
1646	PROTOTYPE:	1133	PROTOTYPE:
1647	CODE:	1134	CODE:
1648	if (nreqs)
1649	{
1650	poll_wait ();	1135	poll_wait ();
1651	poll_cb (0);	1136	RETVAL = poll_cb ();
1652	}	1137	OUTPUT:
		1138	RETVAL
1653		1139
1654	int	1140	int
1655	poll_fileno()	1141	poll_fileno()
1656	PROTOTYPE:	1142	PROTOTYPE:
1657	CODE:	1143	CODE:
…		…
1669		1155
1670	void	1156	void
1671	poll_wait()	1157	poll_wait()
1672	PROTOTYPE:	1158	PROTOTYPE:
1673	CODE:	1159	CODE:
1674	if (nreqs)
1675	poll_wait ();	1160	poll_wait ();
1676		1161
1677	int	1162	int
1678	nreqs()	1163	nreqs()
1679	PROTOTYPE:	1164	PROTOTYPE:
1680	CODE:	1165	CODE:
1681	RETVAL = nreqs;	1166	RETVAL = eio_nreqs ();
1682	OUTPUT:	1167	OUTPUT:
1683	RETVAL	1168	RETVAL
1684		1169
1685	int	1170	int
1686	nready()	1171	nready()
1687	PROTOTYPE:	1172	PROTOTYPE:
1688	CODE:	1173	CODE:
1689	RETVAL = get_nready ();	1174	RETVAL = eio_nready ();
1690	OUTPUT:	1175	OUTPUT:
1691	RETVAL	1176	RETVAL
1692		1177
1693	int	1178	int
1694	npending()	1179	npending()
1695	PROTOTYPE:	1180	PROTOTYPE:
1696	CODE:	1181	CODE:
1697	RETVAL = get_npending ();	1182	RETVAL = eio_npending ();
1698	OUTPUT:	1183	OUTPUT:
1699	RETVAL	1184	RETVAL
1700		1185
1701	int	1186	int
1702	nthreads()	1187	nthreads()
1703	PROTOTYPE:	1188	PROTOTYPE:
1704	CODE:	1189	CODE:
1705	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1190	RETVAL = eio_nthreads ();
1706	RETVAL = started;
1707	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1708	OUTPUT:	1191	OUTPUT:
1709	RETVAL	1192	RETVAL
1710		1193
		1194	int
		1195	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1196	PROTOTYPE: $$$$
		1197	CODE:
		1198	{
		1199	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1200	RETVAL = posix_fadvise (fh, offset, length, advice);
		1201	#else
		1202	RETVAL = errno = ENOSYS;
		1203	#endif
		1204	}
		1205	OUTPUT:
		1206	RETVAL
		1207
		1208	ssize_t
		1209	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1210	PROTOTYPE: $$$$
		1211	CODE:
		1212	eio_sendfile_sync (ofh, ifh, offset, count);
		1213
		1214	void _on_next_submit (SV *cb)
		1215	CODE:
		1216	SvREFCNT_dec (on_next_submit);
		1217	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1218
1711	PROTOTYPES: DISABLE	1219	PROTOTYPES: DISABLE
1712		1220
1713	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1221	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714		1222
1715	void	1223	void
1716	cancel (aio_req_ornot req)	1224	cancel (aio_req_ornot req)
1717	CODE:	1225	CODE:
1718	req_cancel (req);	1226	eio_cancel (req);
1719		1227
1720	void	1228	void
1721	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1229	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1722	CODE:	1230	PPCODE:
		1231	{
		1232	if (GIMME_V != G_VOID)
		1233	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1234
		1235	if (items > 1)
		1236	{
		1237	SV *cb_cv = get_cb (callback);
		1238
1723	SvREFCNT_dec (req->callback);	1239	SvREFCNT_dec (req->callback);
1724	req->callback = newSVsv (callback);	1240	req->callback = SvREFCNT_inc (cb_cv);
		1241	}
		1242	}
1725		1243
1726	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1244	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1727		1245
1728	void	1246	void
1729	add (aio_req grp, ...)	1247	add (aio_req grp, ...)
1730	PPCODE:	1248	PPCODE:
1731	{	1249	{
1732	int i;	1250	int i;
1733	aio_req req;
1734		1251
1735	if (grp->int1 == 2)	1252	if (grp->int1 == 2)
1736	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1253	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737		1254
1738	for (i = 1; i < items; ++i )	1255	for (i = 1; i < items; ++i )
1739	{	1256	{
		1257	aio_req req;
		1258
1740	if (GIMME_V != G_VOID)	1259	if (GIMME_V != G_VOID)
1741	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1260	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742		1261
1743	req = SvAIO_REQ (ST (i));	1262	req = SvAIO_REQ (ST (i));
1744		1263
1745	if (req)	1264	if (req)
1746	{	1265	eio_grp_add (grp, req);
1747	++grp->size;
1748	req->grp = grp;
1749
1750	req->grp_prev = 0;
1751	req->grp_next = grp->grp_first;
1752
1753	if (grp->grp_first)
1754	grp->grp_first->grp_prev = req;
1755
1756	grp->grp_first = req;
1757	}
1758	}	1266	}
1759	}	1267	}
1760		1268
1761	void	1269	void
1762	cancel_subs (aio_req_ornot req)	1270	cancel_subs (aio_req_ornot req)
…		…
1771	AV *av;	1279	AV *av;
1772		1280
1773	grp->errorno = errno;	1281	grp->errorno = errno;
1774		1282
1775	av = newAV ();	1283	av = newAV ();
		1284	av_extend (av, items - 1);
1776		1285
1777	for (i = 1; i < items; ++i )	1286	for (i = 1; i < items; ++i )
1778	av_push (av, newSVsv (ST (i)));	1287	av_push (av, newSVsv (ST (i)));
1779		1288
1780	SvREFCNT_dec (grp->sv1);	1289	SvREFCNT_dec (grp->sv1);
…		…
1787	grp->errorno = errorno;	1296	grp->errorno = errorno;
1788		1297
1789	void	1298	void
1790	limit (aio_req grp, int limit)	1299	limit (aio_req grp, int limit)
1791	CODE:	1300	CODE:
1792	grp->int2 = limit;	1301	eio_grp_limit (grp, limit);
1793	aio_grp_feed (grp);
1794		1302
1795	void	1303	void
1796	feed (aio_req grp, SV *callback=&PL_sv_undef)	1304	feed (aio_req grp, SV *callback=&PL_sv_undef)
1797	CODE:	1305	CODE:
1798	{	1306	{
1799	SvREFCNT_dec (grp->sv2);	1307	SvREFCNT_dec (grp->sv2);
1800	grp->sv2 = newSVsv (callback);	1308	grp->sv2 = newSVsv (callback);
		1309	grp->feed = aio_grp_feed;
1801		1310
1802	if (grp->int2 <= 0)	1311	if (grp->int2 <= 0)
1803	grp->int2 = 2;	1312	grp->int2 = 2;
1804		1313
1805	aio_grp_feed (grp);	1314	eio_grp_limit (grp, grp->int2);
1806	}	1315	}
1807		1316

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