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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.84 by root, Sat Oct 28 01:24:19 2006 UTC vs.
Revision 1.147 by root, Mon Jun 15 05:34:49 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 SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
54	#endif	83	#endif
55		84
56	#ifndef PTHREAD_STACK_MIN	85	/*****************************************************************************/
57	/* care for broken platforms, e.g. windows */	86
58	# define PTHREAD_STACK_MIN 16384	87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
59	#endif	91	#endif
60		92
61	#if __ia64	93	#define expect_false(expr) expect ((expr) != 0, 0)
62	# define STACKSIZE 65536	94	#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		95
69	/* wether word reads are potentially non-atomic.	96	/*****************************************************************************/
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDREAD_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDREAD_UNSAFE 0
76	# else
77	# define WORDREAD_UNSAFE 1
78	# endif
79	#endif
80		97
81	/* buffer size for various temporary buffers */	98	static HV *stash;
82	#define AIO_BUFSIZE 65536	99	typedef SV SV8; /* byte-sv, used for argument-checking */
83
84	#define dBUF \
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	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		100
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		103
109	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;	105	SV *callback; \
114	SV *fh, *fh2;	106	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;	107	STRLEN stroffset; \
122	int type;	108	SV *self;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126		109
127	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
128	unsigned char pri;
129		111
130	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
132	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
133		118
134	enum {	119	enum {
135	FLAG_CANCELLED = 0x01,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
136	};	121	};
137		122
		123	#include "libeio/eio.c"
		124
138	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
140		127
141	enum {	128	static SV *on_next_submit;
142	PRI_MIN = -4,	129	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	130	static int max_outstanding;
144		131
145	DEFAULT_PRI = 0,	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		133
150	static int next_pri = DEFAULT_PRI + PRI_BIAS;
151
152	static unsigned int started, idle, wanted;
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static volatile unsigned int nreqs, nready, npending;
204	static volatile unsigned int max_idle = 4;
205	static volatile unsigned int max_outstanding = 0xffffffff;
206	static int respipe [2];
207
208	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
209	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
210	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212	#if WORDREAD_UNSAFE
213
214	static unsigned int get_nready ()
215	{
216	unsigned int retval;
217
218	LOCK (reqlock);
219	retval = nready;
220	UNLOCK (reqlock);
221
222	return retval;
223	}
224
225	static unsigned int get_npending ()
226	{
227	unsigned int retval;
228
229	LOCK (reslock);
230	retval = npending;
231	UNLOCK (reslock);
232
233	return retval;
234	}
235
236	#else
237
238	# define get_nready() nready
239	# define get_npending() npending
240
241	#endif
242
243	/*
244	* a somewhat faster data structure might be nice, but
245	* with 8 priorities this actually needs <20 insns
246	* per shift, the most expensive operation.
247	*/
248	typedef struct {
249	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
250	int size;
251	} reqq;
252
253	static reqq req_queue;
254	static reqq res_queue;
255
256	int reqq_push (reqq *q, aio_req req)
257	{
258	int pri = req->pri;
259	req->next = 0;
260
261	if (q->qe[pri])
262	{
263	q->qe[pri]->next = req;
264	q->qe[pri] = req;
265	}
266	else
267	q->qe[pri] = q->qs[pri] = req;
268
269	return q->size++;
270	}
271
272	aio_req reqq_shift (reqq *q)
273	{
274	int pri;
275
276	if (!q->size)
277	return 0;
278
279	--q->size;
280
281	for (pri = NUM_PRI; pri--; )
282	{
283	aio_req req = q->qs[pri];
284
285	if (req)
286	{
287	if (!(q->qs[pri] = req->next))
288	q->qe[pri] = 0;
289
290	return req;
291	}
292	}
293
294	abort ();
295	}
296
297	static int poll_cb (int max);
298	static void req_invoke (aio_req req);
299	static void req_free (aio_req req);	134	static void req_destroy (aio_req req);
300	static void req_cancel (aio_req req);	135	static void req_cancel (aio_req req);
		136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
301		150
302	/* must be called at most once */	151	/* must be called at most once */
303	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
304	{	153	{
305	if (!req->self)	154	if (!req->self)
…		…
323	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
324	}	173	}
325		174
326	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
327	{	176	{
328	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	177	if (grp->sv2 && SvOK (grp->sv2))
329	{	178	{
330	int old_len = grp->length;
331
332	if (grp->fh2 && SvOK (grp->fh2))
333	{
334	dSP;	179	dSP;
335		180
336	ENTER;	181	ENTER;
337	SAVETMPS;	182	SAVETMPS;
338	PUSHMARK (SP);	183	PUSHMARK (SP);
339	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
340	PUTBACK;	185	PUTBACK;
341	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342	SPAGAIN;	187	SPAGAIN;
343	FREETMPS;	188	FREETMPS;
344	LEAVE;	189	LEAVE;
345	}
346
347	/* stop if no progress has been made */
348	if (old_len == grp->length)
349	{
350	SvREFCNT_dec (grp->fh2);
351	grp->fh2 = 0;
352	break;
353	}
354	}	190	}
355	}	191	}
356		192
357	static void aio_grp_dec (aio_req grp)	193	static void req_submit (eio_req *req)
358	{	194	{
359	--grp->length;	195	eio_submit (req);
360		196
361	/* call feeder, if applicable */	197	if (expect_false (on_next_submit))
362	aio_grp_feed (grp);
363
364	/* finish, if done */
365	if (!grp->length && grp->fd)
366	{	198	{
367	req_invoke (grp);	199	dSP;
368	req_free (grp);	200	SV *cb = sv_2mortal (on_next_submit);
		201
		202	on_next_submit = 0;
		203
		204	PUSHMARK (SP);
		205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
369	}	207	}
370	}	208	}
371		209
372	static void req_invoke (aio_req req)	210	static int req_invoke (eio_req *req)
373	{	211	{
374	dSP;	212	dSP;
375		213
376	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	214	if (req->flags & FLAG_SV2_RO_OFF)
		215	SvREADONLY_off (req->sv2);
		216
		217	if (!EIO_CANCELLED (req) && req->callback)
377	{	218	{
378	ENTER;	219	ENTER;
379	SAVETMPS;	220	SAVETMPS;
380	PUSHMARK (SP);	221	PUSHMARK (SP);
381	EXTEND (SP, 1);	222	EXTEND (SP, 1);
382		223
383	switch (req->type)	224	switch (req->type)
384	{	225	{
385	case REQ_READDIR:	226	case EIO_READDIR:
386	{	227	{
387	SV *rv = &PL_sv_undef;	228	SV *rv = &PL_sv_undef;
388		229
389	if (req->result >= 0)	230	if (req->result >= 0)
390	{	231	{
391	int i;	232	int i;
392	char *buf = req->data2ptr;	233	char *names = (char *)req->ptr2;
		234	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
393	AV *av = newAV ();	235	AV *av = newAV ();
394		236
395	av_extend (av, req->result - 1);	237	av_extend (av, req->result - 1);
396		238
397	for (i = 0; i < req->result; ++i)	239	for (i = 0; i < req->result; ++i)
398	{	240	{
399	SV *sv = newSVpv (buf, 0);	241	if (req->int1 & EIO_READDIR_DENTS)
		242	{
		243	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
400		244
		245	if (req->int1 & EIO_READDIR_CUSTOM2)
		246	{
		247	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		248	AV *avent = newAV ();
		249
		250	av_extend (avent, 2);
		251
		252	if (!sv_type [ent->type])
		253	{
		254	sv_type [ent->type] = newSViv (ent->type);
		255	SvREADONLY_on (sv_type [ent->type]);
		256	}
		257
		258	av_store (avent, 0, namesv);
		259	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		260	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		261
		262	av_store (av, i, newRV_noinc ((SV *)avent));
		263	}
		264	else
401	av_store (av, i, sv);	265	av_store (av, i, namesv);
		266
		267	++ent;
		268	}
		269	else
		270	{
		271	SV *name = newSVpv (names, 0);
		272	av_store (av, i, name);
402	buf += SvCUR (sv) + 1;	273	names += SvCUR (name) + 1;
		274	}
403	}	275	}
404		276
405	rv = sv_2mortal (newRV_noinc ((SV *)av));	277	rv = sv_2mortal (newRV_noinc ((SV *)av));
406	}	278	}
407		279
408	PUSHs (rv);	280	PUSHs (rv);
		281
		282	if (req->int1 & EIO_READDIR_CUSTOM1)
		283	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
409	}	284	}
410	break;	285	break;
411		286
412	case REQ_OPEN:	287	case EIO_OPEN:
413	{	288	{
414	/* convert fd to fh */	289	/* convert fd to fh */
415	SV *fh;	290	SV *fh = &PL_sv_undef;
416		291
417	PUSHs (sv_2mortal (newSViv (req->result)));	292	if (req->result >= 0)
418	PUTBACK;	293	{
419	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	294	GV *gv = (GV *)sv_newmortal ();
420	SPAGAIN;	295	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		296	char sym [64];
		297	int symlen;
		298
		299	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		300	gv_init (gv, stash, sym, symlen, 0);
421		301
422	fh = SvREFCNT_inc (POPs);	302	symlen = snprintf (
		303	sym,
		304	sizeof (sym),
		305	"%s&=%d",
		306	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		307	(int)req->result
		308	);
423		309
		310	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		311	fh = (SV *)gv;
		312	}
		313
424	PUSHMARK (SP);	314	PUSHs (fh);
425	XPUSHs (sv_2mortal (fh));
426	}	315	}
427	break;	316	break;
428		317
429	case REQ_GROUP:	318	case EIO_GROUP:
430	req->fd = 2; /* mark group as finished */	319	req->int1 = 2; /* mark group as finished */
431		320
432	if (req->data)	321	if (req->sv1)
433	{	322	{
434	int i;	323	int i;
435	AV *av = (AV *)req->data;	324	AV *av = (AV *)req->sv1;
436		325
437	EXTEND (SP, AvFILL (av) + 1);	326	EXTEND (SP, AvFILL (av) + 1);
438	for (i = 0; i <= AvFILL (av); ++i)	327	for (i = 0; i <= AvFILL (av); ++i)
439	PUSHs (*av_fetch (av, i, 0));	328	PUSHs (*av_fetch (av, i, 0));
440	}	329	}
441	break;	330	break;
442		331
443	case REQ_NOP:	332	case EIO_NOP:
444	case REQ_BUSY:	333	case EIO_BUSY:
445	break;	334	break;
		335
		336	case EIO_READLINK:
		337	if (req->result > 0)
		338	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		339	break;
		340
		341	case EIO_STAT:
		342	case EIO_LSTAT:
		343	case EIO_FSTAT:
		344	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		345	PL_laststatval = req->result;
		346	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		347	PUSHs (sv_2mortal (newSViv (req->result)));
		348	break;
		349
		350	case EIO_READ:
		351	{
		352	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		353	*SvEND (req->sv2) = 0;
		354	SvPOK_only (req->sv2);
		355	SvSETMAGIC (req->sv2);
		356	PUSHs (sv_2mortal (newSViv (req->result)));
		357	}
		358	break;
		359
		360	case EIO_DUP2:
		361	if (req->result > 0)
		362	req->result = 0;
		363	/* FALLTHROUGH */
446		364
447	default:	365	default:
448	PUSHs (sv_2mortal (newSViv (req->result)));	366	PUSHs (sv_2mortal (newSViv (req->result)));
449	break;	367	break;
450	}	368	}
451		369
452	errno = req->errorno;	370	errno = req->errorno;
453		371
454	PUTBACK;	372	PUTBACK;
455	call_sv (req->callback, G_VOID | G_EVAL);	373	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456	SPAGAIN;	374	SPAGAIN;
457		375
458	FREETMPS;	376	FREETMPS;
459	LEAVE;	377	LEAVE;
		378
		379	PUTBACK;
460	}	380	}
461		381
462	if (req->grp)	382	return !!SvTRUE (ERRSV);
463	{
464	aio_req grp = req->grp;
465
466	/* unlink request */
467	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
468	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
469
470	if (grp->grp_first == req)
471	grp->grp_first = req->grp_next;
472
473	aio_grp_dec (grp);
474	}
475
476	if (SvTRUE (ERRSV))
477	{
478	req_free (req);
479	croak (0);
480	}
481	}	383	}
482		384
483	static void req_free (aio_req req)	385	static void req_destroy (aio_req req)
484	{	386	{
485	if (req->self)	387	if (req->self)
486	{	388	{
487	sv_unmagic (req->self, PERL_MAGIC_ext);	389	sv_unmagic (req->self, PERL_MAGIC_ext);
488	SvREFCNT_dec (req->self);	390	SvREFCNT_dec (req->self);
489	}	391	}
490		392
491	SvREFCNT_dec (req->data);
492	SvREFCNT_dec (req->fh);	393	SvREFCNT_dec (req->sv1);
493	SvREFCNT_dec (req->fh2);	394	SvREFCNT_dec (req->sv2);
494	SvREFCNT_dec (req->callback);	395	SvREFCNT_dec (req->callback);
495	Safefree (req->statdata);
496
497	if (req->type == REQ_READDIR)
498	free (req->data2ptr);
499		396
500	Safefree (req);	397	Safefree (req);
501	}	398	}
502		399
503	static void req_cancel_subs (aio_req grp)	400	static void req_cancel_subs (aio_req grp)
504	{	401	{
505	aio_req sub;	402	aio_req sub;
506		403
507	if (grp->type != REQ_GROUP)	404	if (grp->type != EIO_GROUP)
508	return;	405	return;
509		406
510	SvREFCNT_dec (grp->fh2);	407	SvREFCNT_dec (grp->sv2);
511	grp->fh2 = 0;	408	grp->sv2 = 0;
512		409
513	for (sub = grp->grp_first; sub; sub = sub->grp_next)	410	eio_grp_cancel (grp);
514	req_cancel (sub);
515	}	411	}
516		412
517	static void req_cancel (aio_req req)	413	#ifdef USE_SOCKETS_AS_HANDLES
518	{	414	# define TO_SOCKET(x) (win32_get_osfhandle (x))
519	req->flags |= FLAG_CANCELLED;	415	#else
520		416	# define TO_SOCKET(x) (x)
521	req_cancel_subs (req);
522	}
523
524	static void *aio_proc(void *arg);
525
526	static void start_thread (void)
527	{
528	sigset_t fullsigset, oldsigset;
529	pthread_attr_t attr;
530
531	worker *wrk = calloc (1, sizeof (worker));
532
533	if (!wrk)
534	croak ("unable to allocate worker thread data");
535
536	pthread_attr_init (&attr);
537	pthread_attr_setstacksize (&attr, STACKSIZE);
538	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539	#ifdef PTHREAD_SCOPE_PROCESS
540	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541	#endif	417	#endif
542		418
543	sigfillset (&fullsigset);	419	static void
		420	create_respipe (void)
		421	{
		422	int old_readfd = respipe [0];
544		423
545	LOCK (wrklock);	424	if (respipe [1] >= 0)
546	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	425	respipe_close (TO_SOCKET (respipe [1]));
547		426
548	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	427	#ifdef _WIN32
		428	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		429	#else
		430	if (pipe (respipe))
		431	#endif
		432	croak ("unable to initialize result pipe");
		433
		434	if (old_readfd >= 0)
549	{	435	{
550	wrk->prev = &wrk_first;	436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
551	wrk->next = wrk_first.next;	437	croak ("unable to initialize result pipe(2)");
552	wrk_first.next->prev = wrk;	438
553	wrk_first.next = wrk;	439	respipe_close (respipe [0]);
554	++started;	440	respipe [0] = old_readfd;
555	}	441	}
556	else
557	free (wrk);
558		442
559	sigprocmask (SIG_SETMASK, &oldsigset, 0);	443	#ifdef _WIN32
560	UNLOCK (wrklock);	444	int arg = 1;
561	}	445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		447	#else
		448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		450	#endif
		451	croak ("unable to initialize result pipe(3)");
562		452
563	static void maybe_start_thread ()	453	respipe_osf [0] = TO_SOCKET (respipe [0]);
564	{	454	respipe_osf [1] = TO_SOCKET (respipe [1]);
565	if (started >= wanted)
566	return;
567
568	/* todo: maybe use idle here, but might be less exact */
569	if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570	return;
571
572	start_thread ();
573	}	455	}
574		456
575	static void req_send (aio_req req)
576	{
577	++nreqs;
578
579	LOCK (reqlock);
580	++nready;
581	reqq_push (&req_queue, req);
582	pthread_cond_signal (&reqwait);
583	UNLOCK (reqlock);
584
585	maybe_start_thread ();
586	}
587
588	static void end_thread (void)
589	{
590	aio_req req;
591
592	Newz (0, req, 1, aio_cb);
593
594	req->type = REQ_QUIT;
595	req->pri = PRI_MAX + PRI_BIAS;
596
597	LOCK (reqlock);
598	reqq_push (&req_queue, req);
599	pthread_cond_signal (&reqwait);
600	UNLOCK (reqlock);
601
602	LOCK (wrklock);
603	--started;
604	UNLOCK (wrklock);
605	}
606
607	static void min_parallel (int nthreads)
608	{
609	if (wanted < nthreads)
610	wanted = nthreads;
611	}
612
613	static void max_parallel (int nthreads)
614	{
615	if (wanted > nthreads)
616	wanted = nthreads;
617
618	while (started > wanted)
619	end_thread ();
620	}
621
622	static void poll_wait ()	457	static void poll_wait (void)
623	{	458	{
624	fd_set rfd;	459	fd_set rfd;
625		460
626	while (nreqs)	461	while (eio_nreqs ())
627	{	462	{
628	int size;	463	int size;
629	if (WORDREAD_UNSAFE) LOCK (reslock);	464
		465	X_LOCK (reslock);
630	size = res_queue.size;	466	size = res_queue.size;
631	if (WORDREAD_UNSAFE) UNLOCK (reslock);	467	X_UNLOCK (reslock);
632		468
633	if (size)	469	if (size)
634	return;	470	return;
635		471
636	maybe_start_thread ();	472	etp_maybe_start_thread ();
637		473
638	FD_ZERO(&rfd);	474	FD_ZERO (&rfd);
639	FD_SET(respipe [0], &rfd);	475	FD_SET (respipe [0], &rfd);
640		476
641	select (respipe [0] + 1, &rfd, 0, 0, 0);	477	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	478	}
643	}	479	}
644		480
645	static int poll_cb (int max)	481	static int poll_cb (void)
646	{	482	{
647	dSP;
648	int count = 0;
649	int do_croak = 0;
650	aio_req req;
651
652	for (;;)	483	for (;;)
653	{	484	{
654	while (max <= 0 || count < max)	485	int res = eio_poll ();
655	{
656	maybe_start_thread ();
657		486
658	LOCK (reslock);	487	if (res > 0)
659	req = reqq_shift (&res_queue);
660
661	if (req)
662	{
663	--npending;
664
665	if (!res_queue.size)
666	{
667	/* read any signals sent by the worker threads */
668	char buf [32];
669	while (read (respipe [0], buf, 32) == 32)
670	;
671	}
672	}
673
674	UNLOCK (reslock);
675
676	if (!req)
677	break;
678
679	--nreqs;
680
681	if (req->type == REQ_GROUP && req->length)
682	{
683	req->fd = 1; /* mark request as delayed */
684	continue;
685	}
686	else
687	{
688	if (req->type == REQ_READ)
689	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692	SvREADONLY_off (req->data);
693
694	if (req->statdata)
695	{
696	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697	PL_laststatval = req->result;
698	PL_statcache = *(req->statdata);
699	}
700
701	req_invoke (req);
702
703	count++;
704	}
705
706	req_free (req);
707	}
708
709	if (nreqs <= max_outstanding)
710	break;	488	croak (0);
		489
		490	if (!max_outstanding || max_outstanding > eio_nreqs ())
		491	return res;
711		492
712	poll_wait ();	493	poll_wait ();
713
714	max = 0;
715	}	494	}
716
717	return count;
718	}	495	}
719		496
720	static void create_pipe ()	497	static void atfork_child (void)
721	{	498	{
722	if (pipe (respipe))	499	create_respipe ();
723	croak ("unable to initialize result pipe");
724
725	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
726	croak ("cannot set result pipe to nonblocking mode");
727
728	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
729	croak ("cannot set result pipe to nonblocking mode");
730	}	500	}
731		501
732	/*****************************************************************************/	502	static SV *
733	/* work around various missing functions */	503	get_cb (SV *cb_sv)
734
735	#if !HAVE_PREADWRITE
736	# define pread aio_pread
737	# define pwrite aio_pwrite
738
739	/*
740	* make our pread/pwrite safe against themselves, but not against
741	* normal read/write by using a mutex. slows down execution a lot,
742	* but that's your problem, not mine.
743	*/
744	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
745
746	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
747	{	504	{
748	ssize_t res;	505	HV *st;
749	off_t ooffset;	506	GV *gvp;
		507	CV *cv;
750		508
751	LOCK (preadwritelock);	509	if (!SvOK (cb_sv))
752	ooffset = lseek (fd, 0, SEEK_CUR);
753	lseek (fd, offset, SEEK_SET);
754	res = read (fd, buf, count);
755	lseek (fd, ooffset, SEEK_SET);
756	UNLOCK (preadwritelock);
757
758	return res;
759	}
760
761	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = write (fd, buf, count);
770	lseek (fd, offset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775	#endif
776
777	#if !HAVE_FDATASYNC
778	# define fdatasync fsync
779	#endif
780
781	#if !HAVE_READAHEAD
782	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
783
784	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
785	{
786	dBUF;
787
788	while (count > 0)
789	{
790	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
791
792	pread (fd, aio_buf, len, offset);
793	offset += len;
794	count -= len;
795	}
796
797	errno = 0;
798	}
799
800	#endif
801
802	#if !HAVE_READDIR_R
803	# define readdir_r aio_readdir_r
804
805	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
806
807	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
808	{
809	struct dirent *e;
810	int errorno;
811
812	LOCK (readdirlock);
813
814	e = readdir (dirp);
815	errorno = errno;
816
817	if (e)
818	{
819	*res = ent;
820	strcpy (ent->d_name, e->d_name);
821	}
822	else
823	*res = 0;
824
825	UNLOCK (readdirlock);
826
827	errno = errorno;
828	return e ? 0 : -1;
829	}
830	#endif
831
832	/* sendfile always needs emulation */
833	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
834	{
835	ssize_t res;
836
837	if (!count)
838	return 0;	510	return 0;
839		511
840	#if HAVE_SENDFILE	512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
841	# if __linux
842	res = sendfile (ofd, ifd, &offset, count);
843		513
844	# elif __freebsd	514	if (!cv)
845	/*	515	croak ("IO::AIO callback must be undef or a CODE reference");
846	* Of course, the freebsd sendfile is a dire hack with no thoughts
847	* wasted on making it similar to other I/O functions.
848	*/
849	{
850	off_t sbytes;
851	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
852		516
853	if (res < 0 && sbytes)	517	return (SV *)cv;
854	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
855	res = sbytes;
856	}
857
858	# elif __hpux
859	res = sendfile (ofd, ifd, offset, count, 0, 0);
860
861	# elif __solaris
862	{
863	struct sendfilevec vec;
864	size_t sbytes;
865
866	vec.sfv_fd = ifd;
867	vec.sfv_flag = 0;
868	vec.sfv_off = offset;
869	vec.sfv_len = count;
870
871	res = sendfilev (ofd, &vec, 1, &sbytes);
872
873	if (res < 0 && sbytes)
874	res = sbytes;
875	}
876
877	# endif
878	#else
879	res = -1;
880	errno = ENOSYS;
881	#endif
882
883	if (res < 0
884	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
885	#if __solaris
886	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
887	#endif
888	)
889	)
890	{
891	/* emulate sendfile. this is a major pain in the ass */
892	dBUF;
893
894	res = 0;
895
896	while (count)
897	{
898	ssize_t cnt;
899
900	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
901
902	if (cnt <= 0)
903	{
904	if (cnt && !res) res = -1;
905	break;
906	}
907
908	cnt = write (ofd, aio_buf, cnt);
909
910	if (cnt <= 0)
911	{
912	if (cnt && !res) res = -1;
913	break;
914	}
915
916	offset += cnt;
917	res += cnt;
918	count -= cnt;
919	}
920	}
921
922	return res;
923	}
924
925	/* read a full directory */
926	static void scandir_ (aio_req req, worker *self)
927	{
928	DIR *dirp;
929	union
930	{
931	struct dirent d;
932	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
933	} *u;
934	struct dirent *entp;
935	char *name, *names;
936	int memlen = 4096;
937	int memofs = 0;
938	int res = 0;
939	int errorno;
940
941	LOCK (wrklock);
942	self->dirp = dirp = opendir (req->dataptr);
943	self->dbuf = u = malloc (sizeof (*u));
944	req->data2ptr = names = malloc (memlen);
945	UNLOCK (wrklock);
946
947	if (dirp && u && names)
948	for (;;)
949	{
950	errno = 0;
951	readdir_r (dirp, &u->d, &entp);
952
953	if (!entp)
954	break;
955
956	name = entp->d_name;
957
958	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
959	{
960	int len = strlen (name) + 1;
961
962	res++;
963
964	while (memofs + len > memlen)
965	{
966	memlen *= 2;
967	LOCK (wrklock);
968	req->data2ptr = names = realloc (names, memlen);
969	UNLOCK (wrklock);
970
971	if (!names)
972	break;
973	}
974
975	memcpy (names + memofs, name, len);
976	memofs += len;
977	}
978	}
979
980	if (errno)
981	res = -1;
982
983	req->result = res;
984	}
985
986	/*****************************************************************************/
987
988	static void *aio_proc (void *thr_arg)
989	{
990	aio_req req;
991	struct timespec ts;
992	worker *self = (worker *)thr_arg;
993
994	/* try to distribute timeouts somewhat evenly */
995	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996	* (1000000000UL / 1024UL);
997
998	for (;;)
999	{
1000	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
1002	LOCK (reqlock);
1003
1004	for (;;)
1005	{
1006	self->req = req = reqq_shift (&req_queue);
1007
1008	if (req)
1009	break;
1010
1011	++idle;
1012
1013	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014	== ETIMEDOUT)
1015	{
1016	if (idle > max_idle)
1017	{
1018	--idle;
1019	UNLOCK (reqlock);
1020	LOCK (wrklock);
1021	--started;
1022	UNLOCK (wrklock);
1023	goto quit;
1024	}
1025
1026	/* we are allowed to idle, so do so without any timeout */
1027	pthread_cond_wait (&reqwait, &reqlock);
1028	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029	}
1030
1031	--idle;
1032	}
1033
1034	--nready;
1035
1036	UNLOCK (reqlock);
1037
1038	errno = 0; /* strictly unnecessary */
1039
1040	if (!(req->flags & FLAG_CANCELLED))
1041	switch (req->type)
1042	{
1043	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1044	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1045
1046	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1047	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1048
1049	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1050	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1051	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1052
1053	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1054	case REQ_CLOSE: req->result = close (req->fd); break;
1055	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1056	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1057	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1058	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1059	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1061
1062	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1063	case REQ_FSYNC: req->result = fsync (req->fd); break;
1064	case REQ_READDIR: scandir_ (req, self); break;
1065
1066	case REQ_BUSY:
1067	{
1068	struct timeval tv;
1069
1070	tv.tv_sec = req->fd;
1071	tv.tv_usec = req->fd2;
1072
1073	req->result = select (0, 0, 0, 0, &tv);
1074	}
1075
1076	case REQ_GROUP:
1077	case REQ_NOP:
1078	break;
1079
1080	case REQ_QUIT:
1081	goto quit;
1082
1083	default:
1084	req->result = ENOSYS;
1085	break;
1086	}
1087
1088	req->errorno = errno;
1089
1090	LOCK (reslock);
1091
1092	++npending;
1093
1094	if (!reqq_push (&res_queue, req))
1095	/* write a dummy byte to the pipe so fh becomes ready */
1096	write (respipe [1], &respipe, 1);
1097
1098	self->req = 0;
1099	worker_clear (self);
1100
1101	UNLOCK (reslock);
1102	}
1103
1104	quit:
1105	LOCK (wrklock);
1106	worker_free (self);
1107	UNLOCK (wrklock);
1108
1109	return 0;
1110	}
1111
1112	/*****************************************************************************/
1113
1114	static void atfork_prepare (void)
1115	{
1116	LOCK (wrklock);
1117	LOCK (reqlock);
1118	LOCK (reslock);
1119	#if !HAVE_PREADWRITE
1120	LOCK (preadwritelock);
1121	#endif
1122	#if !HAVE_READDIR_R
1123	LOCK (readdirlock);
1124	#endif
1125	}
1126
1127	static void atfork_parent (void)
1128	{
1129	#if !HAVE_READDIR_R
1130	UNLOCK (readdirlock);
1131	#endif
1132	#if !HAVE_PREADWRITE
1133	UNLOCK (preadwritelock);
1134	#endif
1135	UNLOCK (reslock);
1136	UNLOCK (reqlock);
1137	UNLOCK (wrklock);
1138	}
1139
1140	static void atfork_child (void)
1141	{
1142	aio_req prv;
1143
1144	while (prv = reqq_shift (&req_queue))
1145	req_free (prv);
1146
1147	while (prv = reqq_shift (&res_queue))
1148	req_free (prv);
1149
1150	while (wrk_first.next != &wrk_first)
1151	{
1152	worker *wrk = wrk_first.next;
1153
1154	if (wrk->req)
1155	req_free (wrk->req);
1156
1157	worker_clear (wrk);
1158	worker_free (wrk);
1159	}
1160
1161	started = 0;
1162	idle = 0;
1163	nreqs = 0;
1164	nready = 0;
1165	npending = 0;
1166
1167	close (respipe [0]);
1168	close (respipe [1]);
1169	create_pipe ();
1170
1171	atfork_parent ();
1172	}	518	}
1173		519
1174	#define dREQ \	520	#define dREQ \
		521	SV *cb_cv; \
1175	aio_req req; \	522	aio_req req; \
1176	int req_pri = next_pri; \	523	int req_pri = next_pri; \
1177	next_pri = DEFAULT_PRI + PRI_BIAS; \	524	next_pri = EIO_PRI_DEFAULT; \
1178	\	525	\
1179	if (SvOK (callback) && !SvROK (callback)) \	526	cb_cv = get_cb (callback); \
1180	croak ("callback must be undef or of reference type"); \
1181	\	527	\
1182	Newz (0, req, 1, aio_cb); \	528	Newz (0, req, 1, eio_req); \
1183	if (!req) \	529	if (!req) \
1184	croak ("out of memory during aio_req allocation"); \	530	croak ("out of memory during eio_req allocation"); \
1185	\	531	\
1186	req->callback = newSVsv (callback); \	532	req->callback = SvREFCNT_inc (cb_cv); \
1187	req->pri = req_pri	533	req->pri = req_pri
1188		534
1189	#define REQ_SEND \	535	#define REQ_SEND \
		536	PUTBACK; \
1190	req_send (req); \	537	req_submit (req); \
		538	SPAGAIN; \
1191	\	539	\
1192	if (GIMME_V != G_VOID) \	540	if (GIMME_V != G_VOID) \
1193	XPUSHs (req_sv (req, AIO_REQ_KLASS));	541	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1194		542
		543	static int
		544	extract_fd (SV *fh, int wr)
		545	{
		546	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		547
		548	if (fd < 0)
		549	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		550
		551	return fd;
		552	}
		553
1195	MODULE = IO::AIO PACKAGE = IO::AIO	554	MODULE = IO::AIO PACKAGE = IO::AIO
1196		555
1197	PROTOTYPES: ENABLE	556	PROTOTYPES: ENABLE
1198		557
1199	BOOT:	558	BOOT:
1200	{	559	{
		560	static const struct {
		561	const char *name;
		562	IV iv;
		563	} *civ, const_iv[] = {
		564	# define const_iv(name, value) { # name, (IV) value },
		565	# define const_eio(name) { # name, (IV) EIO_ ## name },
		566	const_iv (EXDEV , EXDEV)
		567	const_iv (ENOSYS , ENOSYS)
		568	const_iv (O_RDONLY, O_RDONLY)
		569	const_iv (O_WRONLY, O_WRONLY)
		570	const_iv (O_CREAT , O_CREAT)
		571	const_iv (O_TRUNC , O_TRUNC)
		572	#ifndef _WIN32
		573	const_iv (S_IFIFO , S_IFIFO)
		574	#endif
		575	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		576	const_eio (SYNC_FILE_RANGE_WRITE)
		577	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		578
		579	const_eio (READDIR_DENTS)
		580	const_eio (READDIR_DIRS_FIRST)
		581	const_eio (READDIR_STAT_ORDER)
		582	const_eio (READDIR_FOUND_UNKNOWN)
		583
		584	const_eio (DT_UNKNOWN)
		585	const_eio (DT_FIFO)
		586	const_eio (DT_CHR)
		587	const_eio (DT_DIR)
		588	const_eio (DT_BLK)
		589	const_eio (DT_REG)
		590	const_eio (DT_LNK)
		591	const_eio (DT_SOCK)
		592	const_eio (DT_WHT)
		593	};
		594
1201	HV *stash = gv_stashpv ("IO::AIO", 1);	595	stash = gv_stashpv ("IO::AIO", 1);
1202		596
1203	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	597	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1204	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	598	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1205	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1208	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1209		599
1210	create_pipe ();	600	create_respipe ();
1211	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	601
		602	if (eio_init (want_poll, done_poll) < 0)
		603	croak ("IO::AIO: unable to initialise eio library");
		604
		605	/* atfork child called in fifo order, so before eio's handler */
		606	X_THREAD_ATFORK (0, 0, atfork_child);
1212	}	607	}
		608
		609	void
		610	max_poll_reqs (int nreqs)
		611	PROTOTYPE: $
		612	CODE:
		613	eio_set_max_poll_reqs (nreqs);
		614
		615	void
		616	max_poll_time (double nseconds)
		617	PROTOTYPE: $
		618	CODE:
		619	eio_set_max_poll_time (nseconds);
1213		620
1214	void	621	void
1215	min_parallel (int nthreads)	622	min_parallel (int nthreads)
1216	PROTOTYPE: $	623	PROTOTYPE: $
		624	CODE:
		625	eio_set_min_parallel (nthreads);
1217		626
1218	void	627	void
1219	max_parallel (int nthreads)	628	max_parallel (int nthreads)
1220	PROTOTYPE: $	629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_parallel (nthreads);
1221		632
1222	int	633	void
		634	max_idle (int nthreads)
		635	PROTOTYPE: $
		636	CODE:
		637	eio_set_max_idle (nthreads);
		638
		639	void
1223	max_outstanding (int maxreqs)	640	max_outstanding (int maxreqs)
1224	PROTOTYPE: $	641	PROTOTYPE: $
1225	CODE:	642	CODE:
1226	RETVAL = max_outstanding;
1227	max_outstanding = maxreqs;	643	max_outstanding = maxreqs;
1228	OUTPUT:
1229	RETVAL
1230		644
1231	void	645	void
1232	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1233	SV * pathname
1234	int flags
1235	int mode
1236	SV * callback
1237	PROTOTYPE: $$$;$	647	PROTOTYPE: $$$;$
1238	PPCODE:	648	PPCODE:
1239	{	649	{
1240	dREQ;	650	dREQ;
1241		651
1242	req->type = REQ_OPEN;	652	req->type = EIO_OPEN;
1243	req->data = newSVsv (pathname);	653	req->sv1 = newSVsv (pathname);
1244	req->dataptr = SvPVbyte_nolen (req->data);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1245	req->fd = flags;	655	req->int1 = flags;
1246	req->mode = mode;	656	req->int2 = mode;
1247		657
1248	REQ_SEND;	658	REQ_SEND;
1249	}	659	}
1250		660
1251	void	661	void
1252	aio_close (fh,callback=&PL_sv_undef)	662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1253	SV * fh
1254	SV * callback
1255	PROTOTYPE: $;$	663	PROTOTYPE: $;$
1256	ALIAS:	664	ALIAS:
1257	aio_close = REQ_CLOSE
1258	aio_fsync = REQ_FSYNC	665	aio_fsync = EIO_FSYNC
1259	aio_fdatasync = REQ_FDATASYNC	666	aio_fdatasync = EIO_FDATASYNC
1260	PPCODE:	667	PPCODE:
1261	{	668	{
		669	int fd = extract_fd (fh, 0);
1262	dREQ;	670	dREQ;
1263		671
1264	req->type = ix;	672	req->type = ix;
1265	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = fd;
1267		675
1268	REQ_SEND (req);	676	REQ_SEND (req);
1269	}	677	}
1270		678
1271	void	679	void
		680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		681	PROTOTYPE: $$$$;$
		682	PPCODE:
		683	{
		684	int fd = extract_fd (fh, 0);
		685	dREQ;
		686
		687	req->type = EIO_SYNC_FILE_RANGE;
		688	req->sv1 = newSVsv (fh);
		689	req->int1 = fd;
		690	req->offs = SvVAL64 (offset);
		691	req->size = SvVAL64 (nbytes);
		692	req->int2 = flags;
		693
		694	REQ_SEND (req);
		695	}
		696
		697	void
		698	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $;$
		700	PPCODE:
		701	{
		702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		703	int fd = extract_fd (fh, 0);
		704	dREQ;
		705
		706	if (close_pipe < 0)
		707	{
		708	int pipefd [2];
		709
		710	if (pipe (pipefd) < 0
		711	|| close (pipefd [1]) < 0
		712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		713	abort (); /*D*/
		714
		715	close_pipe = pipefd [0];
		716	}
		717
		718	req->type = EIO_DUP2;
		719	req->int1 = close_pipe;
		720	req->sv2 = newSVsv (fh);
		721	req->int2 = fd;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
1272	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1273	SV * fh
1274	UV offset
1275	UV length
1276	SV * data
1277	UV dataoffset
1278	SV * callback
1279	ALIAS:	728	ALIAS:
1280	aio_read = REQ_READ	729	aio_read = EIO_READ
1281	aio_write = REQ_WRITE	730	aio_write = EIO_WRITE
1282	PROTOTYPE: $$$$$;$	731	PROTOTYPE: $$$$$;$
1283	PPCODE:	732	PPCODE:
1284	{	733	{
1285	aio_req req;
1286	STRLEN svlen;	734	STRLEN svlen;
		735	int fd = extract_fd (fh, ix == EIO_WRITE);
1287	char *svptr = SvPVbyte (data, svlen);	736	char *svptr = SvPVbyte (data, svlen);
1288		737	UV len = SvUV (length);
1289	SvUPGRADE (data, SVt_PV);
1290	SvPOK_on (data);
1291		738
1292	if (dataoffset < 0)	739	if (dataoffset < 0)
1293	dataoffset += svlen;	740	dataoffset += svlen;
1294		741
1295	if (dataoffset < 0 || dataoffset > svlen)	742	if (dataoffset < 0 || dataoffset > svlen)
1296	croak ("data offset outside of string");	743	croak ("dataoffset outside of data scalar");
1297		744
1298	if (ix == REQ_WRITE)	745	if (ix == EIO_WRITE)
1299	{	746	{
1300	/* write: check length and adjust. */	747	/* write: check length and adjust. */
1301	if (length < 0 || length + dataoffset > svlen)	748	if (!SvOK (length) || len + dataoffset > svlen)
1302	length = svlen - dataoffset;	749	len = svlen - dataoffset;
1303	}	750	}
1304	else	751	else
1305	{	752	{
1306	/* read: grow scalar as necessary */	753	/* read: check type and grow scalar as necessary */
		754	SvUPGRADE (data, SVt_PV);
1307	svptr = SvGROW (data, length + dataoffset);	755	svptr = SvGROW (data, len + dataoffset + 1);
1308	}	756	}
1309
1310	if (length < 0)
1311	croak ("length must not be negative");
1312		757
1313	{	758	{
1314	dREQ;	759	dREQ;
1315		760
1316	req->type = ix;	761	req->type = ix;
1317	req->fh = newSVsv (fh);	762	req->sv1 = newSVsv (fh);
1318	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	763	req->int1 = fd;
1319	: IoOFP (sv_2io (fh)));	764	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320	req->offset = offset;	765	req->size = len;
1321	req->length = length;
1322	req->data = SvREFCNT_inc (data);	766	req->sv2 = SvREFCNT_inc (data);
1323	req->dataptr = (char *)svptr + dataoffset;	767	req->ptr2 = (char *)svptr + dataoffset;
		768	req->stroffset = dataoffset;
1324		769
1325	if (!SvREADONLY (data))	770	if (!SvREADONLY (data))
1326	{	771	{
1327	SvREADONLY_on (data);	772	SvREADONLY_on (data);
1328	req->data2ptr = (void *)data;	773	req->flags |= FLAG_SV2_RO_OFF;
1329	}	774	}
1330		775
1331	REQ_SEND;	776	REQ_SEND;
1332	}	777	}
1333	}	778	}
1334		779
1335	void	780	void
		781	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		782	PROTOTYPE: $$;$
		783	PPCODE:
		784	{
		785	SV *data;
		786	dREQ;
		787
		788	req->type = EIO_READLINK;
		789	req->sv1 = newSVsv (path);
		790	req->ptr1 = SvPVbyte_nolen (req->sv1);
		791
		792	REQ_SEND;
		793	}
		794
		795	void
1336	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	796	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1337	SV * out_fh
1338	SV * in_fh
1339	UV in_offset
1340	UV length
1341	SV * callback
1342	PROTOTYPE: $$$$;$	797	PROTOTYPE: $$$$;$
1343	PPCODE:	798	PPCODE:
1344	{	799	{
		800	int ifd = extract_fd (in_fh , 0);
		801	int ofd = extract_fd (out_fh, 0);
1345	dREQ;	802	dREQ;
1346		803
1347	req->type = REQ_SENDFILE;	804	req->type = EIO_SENDFILE;
1348	req->fh = newSVsv (out_fh);	805	req->sv1 = newSVsv (out_fh);
1349	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	806	req->int1 = ofd;
1350	req->fh2 = newSVsv (in_fh);	807	req->sv2 = newSVsv (in_fh);
1351	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	808	req->int2 = ifd;
1352	req->offset = in_offset;	809	req->offs = SvVAL64 (in_offset);
1353	req->length = length;	810	req->size = length;
1354		811
1355	REQ_SEND;	812	REQ_SEND;
1356	}	813	}
1357		814
1358	void	815	void
1359	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1360	SV * fh
1361	UV offset
1362	IV length
1363	SV * callback
1364	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1365	PPCODE:	818	PPCODE:
1366	{	819	{
		820	int fd = extract_fd (fh, 0);
1367	dREQ;	821	dREQ;
1368		822
1369	req->type = REQ_READAHEAD;	823	req->type = EIO_READAHEAD;
1370	req->fh = newSVsv (fh);	824	req->sv1 = newSVsv (fh);
1371	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	825	req->int1 = fd;
1372	req->offset = offset;	826	req->offs = SvVAL64 (offset);
1373	req->length = length;	827	req->size = length;
1374		828
1375	REQ_SEND;	829	REQ_SEND;
1376	}	830	}
1377		831
1378	void	832	void
1379	aio_stat (fh_or_path,callback=&PL_sv_undef)	833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1380	SV * fh_or_path
1381	SV * callback
1382	ALIAS:	834	ALIAS:
1383	aio_stat = REQ_STAT	835	aio_stat = EIO_STAT
1384	aio_lstat = REQ_LSTAT	836	aio_lstat = EIO_LSTAT
1385	PPCODE:	837	PPCODE:
1386	{	838	{
1387	dREQ;	839	dREQ;
1388		840
1389	New (0, req->statdata, 1, Stat_t);	841	req->sv1 = newSVsv (fh_or_path);
1390	if (!req->statdata)
1391	{
1392	req_free (req);
1393	croak ("out of memory during aio_req->statdata allocation");
1394	}
1395		842
1396	if (SvPOK (fh_or_path))	843	if (SvPOK (req->sv1))
1397	{	844	{
1398	req->type = ix;	845	req->type = ix;
1399	req->data = newSVsv (fh_or_path);
1400	req->dataptr = SvPVbyte_nolen (req->data);	846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	}	847	}
1402	else	848	else
1403	{	849	{
1404	req->type = REQ_FSTAT;	850	req->type = EIO_FSTAT;
1405	req->fh = newSVsv (fh_or_path);
1406	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1407	}	852	}
1408		853
1409	REQ_SEND;	854	REQ_SEND;
1410	}	855	}
1411		856
1412	void	857	void
		858	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
		863	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		864	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		865	req->sv1 = newSVsv (fh_or_path);
		866
		867	if (SvPOK (req->sv1))
		868	{
		869	req->type = EIO_UTIME;
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	}
		872	else
		873	{
		874	req->type = EIO_FUTIME;
		875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		876	}
		877
		878	REQ_SEND;
		879	}
		880
		881	void
		882	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->sv1 = newSVsv (fh_or_path);
		888	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		889
		890	if (SvPOK (req->sv1))
		891	{
		892	req->type = EIO_TRUNCATE;
		893	req->ptr1 = SvPVbyte_nolen (req->sv1);
		894	}
		895	else
		896	{
		897	req->type = EIO_FTRUNCATE;
		898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		899	}
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_chmod = EIO_CHMOD
		908	aio_mkdir = EIO_MKDIR
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->int2 = mode;
		914	req->sv1 = newSVsv (fh_or_path);
		915
		916	if (SvPOK (req->sv1))
		917	{
		918	req->type = ix;
		919	req->ptr1 = SvPVbyte_nolen (req->sv1);
		920	}
		921	else
		922	{
		923	req->type = EIO_FCHMOD;
		924	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		925	}
		926
		927	REQ_SEND;
		928	}
		929
		930	void
		931	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		932	PPCODE:
		933	{
		934	dREQ;
		935
		936	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		937	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		938	req->sv1 = newSVsv (fh_or_path);
		939
		940	if (SvPOK (req->sv1))
		941	{
		942	req->type = EIO_CHOWN;
		943	req->ptr1 = SvPVbyte_nolen (req->sv1);
		944	}
		945	else
		946	{
		947	req->type = EIO_FCHOWN;
		948	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		949	}
		950
		951	REQ_SEND;
		952	}
		953
		954	void
		955	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		956	PPCODE:
		957	{
		958	dREQ;
		959
		960	req->type = EIO_READDIR;
		961	req->sv1 = newSVsv (pathname);
		962	req->ptr1 = SvPVbyte_nolen (req->sv1);
		963	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		964
		965	if (flags & EIO_READDIR_DENTS)
		966	req->int1 |= EIO_READDIR_CUSTOM2;
		967
		968	REQ_SEND;
		969	}
		970
		971	void
1413	aio_unlink (pathname,callback=&PL_sv_undef)	972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414	SV * pathname
1415	SV * callback
1416	ALIAS:	973	ALIAS:
1417	aio_unlink = REQ_UNLINK	974	aio_unlink = EIO_UNLINK
1418	aio_rmdir = REQ_RMDIR	975	aio_rmdir = EIO_RMDIR
1419	aio_readdir = REQ_READDIR	976	aio_readdir = EIO_READDIR
1420	PPCODE:	977	PPCODE:
1421	{	978	{
1422	dREQ;	979	dREQ;
1423		980
1424	req->type = ix;	981	req->type = ix;
1425	req->data = newSVsv (pathname);	982	req->sv1 = newSVsv (pathname);
1426	req->dataptr = SvPVbyte_nolen (req->data);	983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984
		985	REQ_SEND;
		986	}
		987
		988	void
		989	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		990	ALIAS:
		991	aio_link = EIO_LINK
		992	aio_symlink = EIO_SYMLINK
		993	aio_rename = EIO_RENAME
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = ix;
		999	req->sv1 = newSVsv (oldpath);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->sv2 = newSVsv (newpath);
		1002	req->ptr2 = SvPVbyte_nolen (req->sv2);
1427		1003
1428	REQ_SEND;	1004	REQ_SEND;
1429	}	1005	}
1430		1006
1431	void	1007	void
1432	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1433	SV * oldpath
1434	SV * newpath
1435	SV * callback
1436	ALIAS:
1437	aio_link = REQ_LINK
1438	aio_symlink = REQ_SYMLINK
1439	aio_rename = REQ_RENAME
1440	PPCODE:	1009	PPCODE:
1441	{	1010	{
1442	dREQ;	1011	dREQ;
1443		1012
1444	req->type = ix;	1013	req->type = EIO_MKNOD;
1445	req->fh = newSVsv (oldpath);	1014	req->sv1 = newSVsv (pathname);
1446	req->data2ptr = SvPVbyte_nolen (req->fh);	1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
1447	req->data = newSVsv (newpath);	1016	req->int2 = (mode_t)mode;
1448	req->dataptr = SvPVbyte_nolen (req->data);	1017	req->offs = dev;
1449		1018
1450	REQ_SEND;	1019	REQ_SEND;
1451	}	1020	}
1452		1021
1453	void	1022	void
1454	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1023	aio_busy (double delay, SV *callback=&PL_sv_undef)
1455	SV * pathname
1456	SV * callback
1457	UV mode
1458	UV dev
1459	PPCODE:	1024	PPCODE:
1460	{	1025	{
1461	dREQ;	1026	dREQ;
1462		1027
1463	req->type = REQ_MKNOD;	1028	req->type = EIO_BUSY;
1464	req->data = newSVsv (pathname);	1029	req->nv1 = delay < 0. ? 0. : delay;
1465	req->dataptr = SvPVbyte_nolen (req->data);	1030
1466	req->mode = (mode_t)mode;
1467	req->offset = dev;
1468
1469	REQ_SEND;	1031	REQ_SEND;
1470	}	1032	}
1471		1033
1472	void	1034	void
1473	aio_busy (delay,callback=&PL_sv_undef)
1474	double delay
1475	SV * callback
1476	PPCODE:
1477	{
1478	dREQ;
1479
1480	req->type = REQ_BUSY;
1481	req->fd = delay < 0. ? 0 : delay;
1482	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1483
1484	REQ_SEND;
1485	}
1486
1487	void
1488	aio_group (callback=&PL_sv_undef)	1035	aio_group (SV *callback=&PL_sv_undef)
1489	SV * callback
1490	PROTOTYPE: ;$	1036	PROTOTYPE: ;$
1491	PPCODE:	1037	PPCODE:
1492	{	1038	{
1493	dREQ;	1039	dREQ;
1494		1040
1495	req->type = REQ_GROUP;	1041	req->type = EIO_GROUP;
		1042
1496	req_send (req);	1043	req_submit (req);
1497
1498	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1499	}	1045	}
1500		1046
1501	void	1047	void
1502	aio_nop (callback=&PL_sv_undef)	1048	aio_nop (SV *callback=&PL_sv_undef)
1503	SV * callback	1049	ALIAS:
		1050	aio_nop = EIO_NOP
		1051	aio_sync = EIO_SYNC
1504	PPCODE:	1052	PPCODE:
1505	{	1053	{
1506	dREQ;	1054	dREQ;
1507		1055
1508	req->type = REQ_NOP;	1056	req->type = ix;
1509		1057
1510	REQ_SEND;	1058	REQ_SEND;
1511	}	1059	}
1512		1060
1513	int	1061	int
1514	aioreq_pri (int pri = 0)	1062	aioreq_pri (int pri = 0)
1515	PROTOTYPE: ;$	1063	PROTOTYPE: ;$
1516	CODE:	1064	CODE:
1517	RETVAL = next_pri - PRI_BIAS;	1065	RETVAL = next_pri;
1518	if (items > 0)	1066	if (items > 0)
1519	{	1067	{
1520	if (pri < PRI_MIN) pri = PRI_MIN;	1068	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521	if (pri > PRI_MAX) pri = PRI_MAX;	1069	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522	next_pri = pri + PRI_BIAS;	1070	next_pri = pri;
1523	}	1071	}
1524	OUTPUT:	1072	OUTPUT:
1525	RETVAL	1073	RETVAL
1526		1074
1527	void	1075	void
1528	aioreq_nice (int nice = 0)	1076	aioreq_nice (int nice = 0)
1529	CODE:	1077	CODE:
1530	nice = next_pri - nice;	1078	nice = next_pri - nice;
1531	if (nice < PRI_MIN) nice = PRI_MIN;	1079	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532	if (nice > PRI_MAX) nice = PRI_MAX;	1080	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533	next_pri = nice + PRI_BIAS;	1081	next_pri = nice;
1534		1082
1535	void	1083	void
1536	flush ()	1084	flush ()
1537	PROTOTYPE:	1085	PROTOTYPE:
1538	CODE:	1086	CODE:
1539	while (nreqs)	1087	while (eio_nreqs ())
1540	{	1088	{
1541	poll_wait ();	1089	poll_wait ();
1542	poll_cb (0);	1090	poll_cb ();
1543	}	1091	}
1544		1092
1545	void	1093	int
1546	poll()	1094	poll()
1547	PROTOTYPE:	1095	PROTOTYPE:
1548	CODE:	1096	CODE:
1549	if (nreqs)
1550	{
1551	poll_wait ();	1097	poll_wait ();
1552	poll_cb (0);	1098	RETVAL = poll_cb ();
1553	}	1099	OUTPUT:
		1100	RETVAL
1554		1101
1555	int	1102	int
1556	poll_fileno()	1103	poll_fileno()
1557	PROTOTYPE:	1104	PROTOTYPE:
1558	CODE:	1105	CODE:
…		…
1562		1109
1563	int	1110	int
1564	poll_cb(...)	1111	poll_cb(...)
1565	PROTOTYPE:	1112	PROTOTYPE:
1566	CODE:	1113	CODE:
1567	RETVAL = poll_cb (0);	1114	RETVAL = poll_cb ();
1568	OUTPUT:	1115	OUTPUT:
1569	RETVAL	1116	RETVAL
1570		1117
1571	int
1572	poll_some(int max = 0)
1573	PROTOTYPE: $
1574	CODE:
1575	RETVAL = poll_cb (max);
1576	OUTPUT:
1577	RETVAL
1578
1579	void	1118	void
1580	poll_wait()	1119	poll_wait()
1581	PROTOTYPE:	1120	PROTOTYPE:
1582	CODE:	1121	CODE:
1583	if (nreqs)
1584	poll_wait ();	1122	poll_wait ();
1585		1123
1586	int	1124	int
1587	nreqs()	1125	nreqs()
1588	PROTOTYPE:	1126	PROTOTYPE:
1589	CODE:	1127	CODE:
1590	RETVAL = nreqs;	1128	RETVAL = eio_nreqs ();
1591	OUTPUT:	1129	OUTPUT:
1592	RETVAL	1130	RETVAL
1593		1131
1594	int	1132	int
1595	nready()	1133	nready()
1596	PROTOTYPE:	1134	PROTOTYPE:
1597	CODE:	1135	CODE:
1598	RETVAL = get_nready ();	1136	RETVAL = eio_nready ();
1599	OUTPUT:	1137	OUTPUT:
1600	RETVAL	1138	RETVAL
1601		1139
1602	int	1140	int
1603	npending()	1141	npending()
1604	PROTOTYPE:	1142	PROTOTYPE:
1605	CODE:	1143	CODE:
1606	RETVAL = get_npending ();	1144	RETVAL = eio_npending ();
1607	OUTPUT:	1145	OUTPUT:
1608	RETVAL	1146	RETVAL
1609		1147
		1148	int
		1149	nthreads()
		1150	PROTOTYPE:
		1151	CODE:
		1152	RETVAL = eio_nthreads ();
		1153	OUTPUT:
		1154	RETVAL
		1155
		1156	void _on_next_submit (SV *cb)
		1157	CODE:
		1158	SvREFCNT_dec (on_next_submit);
		1159	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1160
1610	PROTOTYPES: DISABLE	1161	PROTOTYPES: DISABLE
1611		1162
1612	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613		1164
1614	void	1165	void
1615	cancel (aio_req_ornot req)	1166	cancel (aio_req_ornot req)
1616	CODE:	1167	CODE:
1617	req_cancel (req);	1168	eio_cancel (req);
1618		1169
1619	void	1170	void
1620	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1171	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1621	CODE:	1172	PPCODE:
		1173	{
		1174	if (GIMME_V != G_VOID)
		1175	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1176
		1177	if (items > 1)
		1178	{
		1179	SV *cb_cv = get_cb (callback);
		1180
1622	SvREFCNT_dec (req->callback);	1181	SvREFCNT_dec (req->callback);
1623	req->callback = newSVsv (callback);	1182	req->callback = SvREFCNT_inc (cb_cv);
		1183	}
		1184	}
1624		1185
1625	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1186	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1626		1187
1627	void	1188	void
1628	add (aio_req grp, ...)	1189	add (aio_req grp, ...)
1629	PPCODE:	1190	PPCODE:
1630	{	1191	{
1631	int i;	1192	int i;
1632	aio_req req;
1633		1193
1634	if (grp->fd == 2)	1194	if (grp->int1 == 2)
1635	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1195	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1636		1196
1637	for (i = 1; i < items; ++i )	1197	for (i = 1; i < items; ++i )
1638	{	1198	{
		1199	aio_req req;
		1200
1639	if (GIMME_V != G_VOID)	1201	if (GIMME_V != G_VOID)
1640	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1202	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641		1203
1642	req = SvAIO_REQ (ST (i));	1204	req = SvAIO_REQ (ST (i));
1643		1205
1644	if (req)	1206	if (req)
1645	{	1207	eio_grp_add (grp, req);
1646	++grp->length;
1647	req->grp = grp;
1648
1649	req->grp_prev = 0;
1650	req->grp_next = grp->grp_first;
1651
1652	if (grp->grp_first)
1653	grp->grp_first->grp_prev = req;
1654
1655	grp->grp_first = req;
1656	}
1657	}	1208	}
1658	}	1209	}
1659		1210
1660	void	1211	void
1661	cancel_subs (aio_req_ornot req)	1212	cancel_subs (aio_req_ornot req)
…		…
1670	AV *av;	1221	AV *av;
1671		1222
1672	grp->errorno = errno;	1223	grp->errorno = errno;
1673		1224
1674	av = newAV ();	1225	av = newAV ();
		1226	av_extend (av, items - 1);
1675		1227
1676	for (i = 1; i < items; ++i )	1228	for (i = 1; i < items; ++i )
1677	av_push (av, newSVsv (ST (i)));	1229	av_push (av, newSVsv (ST (i)));
1678		1230
1679	SvREFCNT_dec (grp->data);	1231	SvREFCNT_dec (grp->sv1);
1680	grp->data = (SV *)av;	1232	grp->sv1 = (SV *)av;
1681	}	1233	}
1682		1234
1683	void	1235	void
1684	errno (aio_req grp, int errorno = errno)	1236	errno (aio_req grp, int errorno = errno)
1685	CODE:	1237	CODE:
1686	grp->errorno = errorno;	1238	grp->errorno = errorno;
1687		1239
1688	void	1240	void
1689	limit (aio_req grp, int limit)	1241	limit (aio_req grp, int limit)
1690	CODE:	1242	CODE:
1691	grp->fd2 = limit;	1243	eio_grp_limit (grp, limit);
1692	aio_grp_feed (grp);
1693		1244
1694	void	1245	void
1695	feed (aio_req grp, SV *callback=&PL_sv_undef)	1246	feed (aio_req grp, SV *callback=&PL_sv_undef)
1696	CODE:	1247	CODE:
1697	{	1248	{
1698	SvREFCNT_dec (grp->fh2);	1249	SvREFCNT_dec (grp->sv2);
1699	grp->fh2 = newSVsv (callback);	1250	grp->sv2 = newSVsv (callback);
		1251	grp->feed = aio_grp_feed;
1700		1252
1701	if (grp->fd2 <= 0)	1253	if (grp->int2 <= 0)
1702	grp->fd2 = 2;	1254	grp->int2 = 2;
1703		1255
1704	aio_grp_feed (grp);	1256	eio_grp_limit (grp, grp->int2);
1705	}	1257	}
1706		1258

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