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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.91 by root, Wed Nov 8 01:57:43 2006 UTC vs.
Revision 1.117 by root, Sat May 10 20:02:09 2008 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	#ifdef _WIN32
34	# if __linux	19
35	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
36	# elif __freebsd	21	# undef malloc
37	# include <sys/socket.h>	22	# undef free
38	# include <sys/uio.h>	23
39	# elif __hpux	24	// perl overrides all those nice win32 functions
40	# include <sys/socket.h>	25	# undef open
41	# elif __solaris /* not yet */	26	# undef read
42	# include <sys/sendfile.h>	27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
43	# else	56	#else
44	# error sendfile support requested but not available	57
45	# endif	58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	# define EIO_STRUCT_DIRENT struct dirent
		64
46	#endif	65	#endif
47		66
48	/* number of seconds after which idle threads exit */	67	#define EIO_STRUCT_STAT Stat_t
49	#define IDLE_TIMEOUT 10
50		68
51	/* used for struct dirent, AIX doesn't provide it */	69	/* use NV for 32 bit perls as it allows larger offsets */
52	#ifndef NAME_MAX	70	#if IVSIZE >= 8
53	# define NAME_MAX 4096	71	# define SvVAL64 SvIV
		72	#else
		73	# define SvVAL64 SvNV
54	#endif	74	#endif
55		75
56	#ifndef PTHREAD_STACK_MIN	76	static HV *stash;
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif
79	#endif
80
81	/* buffer size for various temporary buffers */
82	#define AIO_BUFSIZE 65536
83
84	#define dBUF \
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	typedef SV SV8; /* byte-sv, used for argument-checking */	77	typedef SV SV8; /* byte-sv, used for argument-checking */
93
94	enum {
95	REQ_QUIT,
96	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
98	REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100	REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,
106	};
107		78
108	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
110		81
111	typedef struct aio_cb	82	#define EIO_COMMON \
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;	83	SV *callback; \
116	SV *sv1, *sv2;	84	SV *sv1, *sv2; \
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;	85	STRLEN stroffset; \
123	int type;	86	SV *self
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127		87
128	unsigned char flags;	88	#include "libeio/eio.h"
129	unsigned char pri;
130		89
131	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
133	} aio_cb;	92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
134		96
135	enum {	97	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};	99	};
140		100
		101	#include "libeio/eio.c"
		102
141	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
143		105
144	enum {	106	static SV *on_next_submit;
145	PRI_MIN = -4,
146	PRI_MAX = 4,
147
148	DEFAULT_PRI = 0,
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152
153	#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155	static unsigned int max_poll_time = 0;
156	static unsigned int max_poll_reqs = 0;
157
158	/* calculcate time difference in ~1/AIO_TICKS of a second */
159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;	107	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
		108	static int max_outstanding;
166		109
167	static unsigned int started, idle, wanted;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
168		111
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181	typedef struct worker {
182	/* locked by wrklock */
183	struct worker *prev, *next;
184
185	pthread_t tid;
186
187	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */
189	void *dbuf;
190	DIR *dirp;
191	} worker;
192
193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195	static void worker_clear (worker *wrk)
196	{
197	if (wrk->dirp)
198	{
199	closedir (wrk->dirp);
200	wrk->dirp = 0;
201	}
202
203	if (wrk->dbuf)
204	{
205	free (wrk->dbuf);
206	wrk->dbuf = 0;
207	}
208	}
209
210	static void worker_free (worker *wrk)
211	{
212	wrk->next->prev = wrk->prev;
213	wrk->prev->next = wrk->next;
214
215	free (wrk);
216	}
217
218	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];
222
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227	#if WORDACCESS_UNSAFE
228
229	static unsigned int get_nready ()
230	{
231	unsigned int retval;
232
233	LOCK (reqlock);
234	retval = nready;
235	UNLOCK (reqlock);
236
237	return retval;
238	}
239
240	static unsigned int get_npending ()
241	{
242	unsigned int retval;
243
244	LOCK (reslock);
245	retval = npending;
246	UNLOCK (reslock);
247
248	return retval;
249	}
250
251	static unsigned int get_nthreads ()
252	{
253	unsigned int retval;
254
255	LOCK (wrklock);
256	retval = started;
257	UNLOCK (wrklock);
258
259	return retval;
260	}
261
262	#else
263
264	# define get_nready() nready
265	# define get_npending() npending
266	# define get_nthreads() started
267
268	#endif
269
270	/*
271	* a somewhat faster data structure might be nice, but
272	* with 8 priorities this actually needs <20 insns
273	* per shift, the most expensive operation.
274	*/
275	typedef struct {
276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277	int size;
278	} reqq;
279
280	static reqq req_queue;
281	static reqq res_queue;
282
283	int reqq_push (reqq *q, aio_req req)
284	{
285	int pri = req->pri;
286	req->next = 0;
287
288	if (q->qe[pri])
289	{
290	q->qe[pri]->next = req;
291	q->qe[pri] = req;
292	}
293	else
294	q->qe[pri] = q->qs[pri] = req;
295
296	return q->size++;
297	}
298
299	aio_req reqq_shift (reqq *q)
300	{
301	int pri;
302
303	if (!q->size)
304	return 0;
305
306	--q->size;
307
308	for (pri = NUM_PRI; pri--; )
309	{
310	aio_req req = q->qs[pri];
311
312	if (req)
313	{
314	if (!(q->qs[pri] = req->next))
315	q->qe[pri] = 0;
316
317	return req;
318	}
319	}
320
321	abort ();
322	}
323
324	static int poll_cb ();
325	static void req_invoke (aio_req req);
326	static void req_free (aio_req req);	112	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	113	static void req_cancel (aio_req req);
		114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
328		128
329	/* must be called at most once */	129	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
331	{	131	{
332	if (!req->self)	132	if (!req->self)
…		…
350	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	151	}
352		152
353	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
354	{	154	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	155	if (grp->sv2 && SvOK (grp->sv2))
356	{	156	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	157	dSP;
362		158
363	ENTER;	159	ENTER;
364	SAVETMPS;	160	SAVETMPS;
365	PUSHMARK (SP);	161	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
367	PUTBACK;	163	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	165	SPAGAIN;
370	FREETMPS;	166	FREETMPS;
371	LEAVE;	167	LEAVE;
372	}
373
374	/* stop if no progress has been made */
375	if (old_len == grp->size)
376	{
377	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;
379	break;
380	}
381	}	168	}
382	}	169	}
383		170
384	static void aio_grp_dec (aio_req grp)	171	static void req_submit (eio_req *req)
385	{	172	{
386	--grp->size;	173	eio_submit (req);
387		174
388	/* call feeder, if applicable */	175	if (on_next_submit)
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	176	{
394	req_invoke (grp);	177	dSP;
395	req_free (grp);	178	SV *cb = sv_2mortal (on_next_submit);
		179
		180	on_next_submit = 0;
		181
		182	PUSHMARK (SP);
		183	PUTBACK;
		184	call_sv (cb, G_DISCARD | G_EVAL);
396	}	185	}
397	}	186	}
398		187
399	static void req_invoke (aio_req req)	188	static int req_invoke (eio_req *req)
400	{	189	{
401	dSP;	190	dSP;
402		191
403	if (req->flags & FLAG_SV1_RO_OFF)	192	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	193	SvREADONLY_off (req->sv2);
405		194
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	195	if (!EIO_CANCELLED (req) && SvOK (req->callback))
407	{	196	{
408	ENTER;	197	ENTER;
409	SAVETMPS;	198	SAVETMPS;
410	PUSHMARK (SP);	199	PUSHMARK (SP);
411	EXTEND (SP, 1);	200	EXTEND (SP, 1);
412		201
413	switch (req->type)	202	switch (req->type)
414	{	203	{
415	case REQ_READDIR:	204	case EIO_READDIR:
416	{	205	{
417	SV *rv = &PL_sv_undef;	206	SV *rv = &PL_sv_undef;
418		207
419	if (req->result >= 0)	208	if (req->result >= 0)
420	{	209	{
…		…
437		226
438	PUSHs (rv);	227	PUSHs (rv);
439	}	228	}
440	break;	229	break;
441		230
442	case REQ_OPEN:	231	case EIO_OPEN:
443	{	232	{
444	/* convert fd to fh */	233	/* convert fd to fh */
445	SV *fh;	234	SV *fh = &PL_sv_undef;
446		235
447	PUSHs (sv_2mortal (newSViv (req->result)));	236	if (req->result >= 0)
448	PUTBACK;	237	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	238	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	239	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		240	char sym [64];
		241	int symlen;
		242
		243	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		244	gv_init (gv, stash, sym, symlen, 0);
451		245
452	fh = SvREFCNT_inc (POPs);	246	symlen = snprintf (
		247	sym,
		248	sizeof (sym),
		249	"%s&=%d",
		250	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		251	req->result
		252	);
453		253
		254	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		255	fh = (SV *)gv;
		256	}
		257
454	PUSHMARK (SP);	258	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	259	}
457	break;	260	break;
458		261
459	case REQ_GROUP:	262	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	263	req->int1 = 2; /* mark group as finished */
461		264
462	if (req->sv1)	265	if (req->sv1)
463	{	266	{
464	int i;	267	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	271	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	272	PUSHs (*av_fetch (av, i, 0));
470	}	273	}
471	break;	274	break;
472		275
473	case REQ_NOP:	276	case EIO_NOP:
474	case REQ_BUSY:	277	case EIO_BUSY:
475	break;	278	break;
476		279
477	case REQ_READLINK:	280	case EIO_READLINK:
478	if (req->result > 0)	281	if (req->result > 0)
479	{	282	{
480	SvCUR_set (req->sv1, req->result);	283	SvCUR_set (req->sv2, req->result);
481	*SvEND (req->sv1) = 0;	284	*SvEND (req->sv2) = 0;
482	PUSHs (req->sv1);	285	PUSHs (req->sv2);
483	}	286	}
484	break;	287	break;
485		288
486	case REQ_STAT:	289	case EIO_STAT:
487	case REQ_LSTAT:	290	case EIO_LSTAT:
488	case REQ_FSTAT:	291	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	292	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
490	PL_laststatval = req->result;	293	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);	294	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	295	PUSHs (sv_2mortal (newSViv (req->result)));
493	break;	296	break;
494		297
495	case REQ_READ:	298	case EIO_READ:
496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	299	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
497	*SvEND (req->sv1) = 0;	300	*SvEND (req->sv2) = 0;
498	PUSHs (sv_2mortal (newSViv (req->result)));	301	PUSHs (sv_2mortal (newSViv (req->result)));
499	break;	302	break;
		303
		304	case EIO_DUP2:
		305	if (req->result > 0)
		306	req->result = 0;
		307	/* FALLTHROUGH */
500		308
501	default:	309	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	310	PUSHs (sv_2mortal (newSViv (req->result)));
503	break;	311	break;
504	}	312	}
505		313
506	errno = req->errorno;	314	errno = req->errorno;
507		315
508	PUTBACK;	316	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	317	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	SPAGAIN;	318	SPAGAIN;
511		319
512	FREETMPS;	320	FREETMPS;
513	LEAVE;	321	LEAVE;
		322
		323	PUTBACK;
514	}	324	}
515		325
516	if (req->grp)	326	return !!SvTRUE (ERRSV);
517	{
518	aio_req grp = req->grp;
519
520	/* unlink request */
521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524	if (grp->grp_first == req)
525	grp->grp_first = req->grp_next;
526
527	aio_grp_dec (grp);
528	}
529
530	if (SvTRUE (ERRSV))
531	{
532	req_free (req);
533	croak (0);
534	}
535	}	327	}
536		328
537	static void req_free (aio_req req)	329	static void req_destroy (aio_req req)
538	{	330	{
539	if (req->self)	331	if (req->self)
540	{	332	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	333	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	334	SvREFCNT_dec (req->self);
543	}	335	}
544		336
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	337	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	338	SvREFCNT_dec (req->sv2);
548	SvREFCNT_dec (req->callback);	339	SvREFCNT_dec (req->callback);
549		340
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	341	Safefree (req);
554	}	342	}
555		343
556	static void req_cancel_subs (aio_req grp)	344	static void req_cancel_subs (aio_req grp)
557	{	345	{
558	aio_req sub;	346	aio_req sub;
559		347
560	if (grp->type != REQ_GROUP)	348	if (grp->type != EIO_GROUP)
561	return;	349	return;
562		350
563	SvREFCNT_dec (grp->sv2);	351	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	352	grp->sv2 = 0;
565		353
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	354	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	355	}
569		356
570	static void req_cancel (aio_req req)	357	#ifdef USE_SOCKETS_AS_HANDLES
571	{	358	# define TO_SOCKET(x) (win32_get_osfhandle (x))
572	req->flags |= FLAG_CANCELLED;	359	#else
573		360	# define TO_SOCKET(x) (x)
574	req_cancel_subs (req);
575	}
576
577	static void *aio_proc(void *arg);
578
579	static void start_thread (void)
580	{
581	sigset_t fullsigset, oldsigset;
582	pthread_attr_t attr;
583
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	pthread_attr_init (&attr);
590	pthread_attr_setstacksize (&attr, STACKSIZE);
591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592	#ifdef PTHREAD_SCOPE_PROCESS
593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594	#endif	361	#endif
595		362
596	sigfillset (&fullsigset);	363	static void
		364	create_respipe (void)
		365	{
		366	int old_readfd = respipe [0];
597		367
598	LOCK (wrklock);	368	if (respipe [1] >= 0)
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	369	respipe_close (TO_SOCKET (respipe [1]));
600		370
601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	371	#ifdef _WIN32
		372	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		373	#else
		374	if (pipe (respipe))
		375	#endif
		376	croak ("unable to initialize result pipe");
		377
		378	if (old_readfd >= 0)
602	{	379	{
603	wrk->prev = &wrk_first;	380	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
604	wrk->next = wrk_first.next;	381	croak ("unable to initialize result pipe(2)");
605	wrk_first.next->prev = wrk;	382
606	wrk_first.next = wrk;	383	respipe_close (respipe [0]);
607	++started;	384	respipe [0] = old_readfd;
608	}	385	}
609	else
610	free (wrk);
611		386
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);	387	#ifdef _WIN32
613	UNLOCK (wrklock);	388	int arg = 1;
614	}	389	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		390	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		391	#else
		392	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		393	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		394	#endif
		395	croak ("unable to initialize result pipe(3)");
615		396
616	static void maybe_start_thread ()	397	respipe_osf [0] = TO_SOCKET (respipe [0]);
617	{	398	respipe_osf [1] = TO_SOCKET (respipe [1]);
618	if (get_nthreads () >= wanted)
619	return;
620
621	/* todo: maybe use idle here, but might be less exact */
622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623	return;
624
625	start_thread ();
626	}	399	}
627		400
628	static void req_send (aio_req req)
629	{
630	++nreqs;
631
632	LOCK (reqlock);
633	++nready;
634	reqq_push (&req_queue, req);
635	pthread_cond_signal (&reqwait);
636	UNLOCK (reqlock);
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	pthread_cond_signal (&reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	401	static void poll_wait (void)
683	{	402	{
684	fd_set rfd;	403	fd_set rfd;
685		404
686	while (nreqs)	405	while (eio_nreqs ())
687	{	406	{
688	int size;	407	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	408
		409	X_LOCK (reslock);
690	size = res_queue.size;	410	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	411	X_UNLOCK (reslock);
692		412
693	if (size)	413	if (size)
694	return;	414	return;
695		415
696	maybe_start_thread ();	416	maybe_start_thread ();
697		417
698	FD_ZERO(&rfd);	418	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	419	FD_SET (respipe [0], &rfd);
700		420
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	421	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	422	}
703	}	423	}
704		424
705	static int poll_cb ()	425	static int poll_cb (void)
706	{	426	{
707	dSP;	427	int res;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713		428
714	if (max_poll_time)	429	do
715	gettimeofday (&tv_start, 0);
716
717	for (;;)
718	{	430	{
719	for (;;)	431	res = eio_poll ();
720	{
721	maybe_start_thread ();
722		432
723	LOCK (reslock);	433	if (res > 0)
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{
728	--npending;
729
730	if (!res_queue.size)
731	{
732	/* read any signals sent by the worker threads */
733	char buf [32];
734	while (read (respipe [0], buf, 32) == 32)
735	;
736	}
737	}
738
739	UNLOCK (reslock);
740
741	if (!req)
742	break;
743
744	--nreqs;
745
746	if (req->type == REQ_GROUP && req->size)
747	{
748	req->int1 = 1; /* mark request as delayed */
749	continue;
750	}
751	else
752	{
753	req_invoke (req);
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;	434	croak (0);
774
775	poll_wait ();
776
777	++maxreqs;
778	}	435	}
779		436	while (max_outstanding && max_outstanding <= eio_nreqs ());
780	return count;
781	}
782
783	static void create_pipe ()
784	{
785	if (pipe (respipe))
786	croak ("unable to initialize result pipe");
787
788	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790
791	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792	croak ("cannot set result pipe to nonblocking mode");
793	}
794
795	/*****************************************************************************/
796	/* work around various missing functions */
797
798	#if !HAVE_PREADWRITE
799	# define pread aio_pread
800	# define pwrite aio_pwrite
801
802	/*
803	* make our pread/pwrite safe against themselves, but not against
804	* normal read/write by using a mutex. slows down execution a lot,
805	* but that's your problem, not mine.
806	*/
807	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810	{
811	ssize_t res;
812	off_t ooffset;
813
814	LOCK (preadwritelock);
815	ooffset = lseek (fd, 0, SEEK_CUR);
816	lseek (fd, offset, SEEK_SET);
817	res = read (fd, buf, count);
818	lseek (fd, ooffset, SEEK_SET);
819	UNLOCK (preadwritelock);
820		437
821	return res;	438	return res;
822	}	439	}
823		440
824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825	{
826	ssize_t res;
827	off_t ooffset;
828
829	LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);
832	res = write (fd, buf, count);
833	lseek (fd, offset, SEEK_SET);
834	UNLOCK (preadwritelock);
835
836	return res;
837	}
838	#endif
839
840	#if !HAVE_FDATASYNC
841	# define fdatasync fsync
842	#endif
843
844	#if !HAVE_READAHEAD
845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848	{
849	dBUF;
850
851	while (count > 0)
852	{
853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855	pread (fd, aio_buf, len, offset);
856	offset += len;
857	count -= len;
858	}
859
860	errno = 0;
861	}
862
863	#endif
864
865	#if !HAVE_READDIR_R
866	# define readdir_r aio_readdir_r
867
868	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871	{
872	struct dirent *e;
873	int errorno;
874
875	LOCK (readdirlock);
876
877	e = readdir (dirp);
878	errorno = errno;
879
880	if (e)
881	{
882	*res = ent;
883	strcpy (ent->d_name, e->d_name);
884	}
885	else
886	*res = 0;
887
888	UNLOCK (readdirlock);
889
890	errno = errorno;
891	return e ? 0 : -1;
892	}
893	#endif
894
895	/* sendfile always needs emulation */
896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897	{
898	ssize_t res;
899
900	if (!count)
901	return 0;
902
903	#if HAVE_SENDFILE
904	# if __linux
905	res = sendfile (ofd, ifd, &offset, count);
906
907	# elif __freebsd
908	/*
909	* Of course, the freebsd sendfile is a dire hack with no thoughts
910	* wasted on making it similar to other I/O functions.
911	*/
912	{
913	off_t sbytes;
914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916	if (res < 0 && sbytes)
917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918	res = sbytes;
919	}
920
921	# elif __hpux
922	res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924	# elif __solaris
925	{
926	struct sendfilevec vec;
927	size_t sbytes;
928
929	vec.sfv_fd = ifd;
930	vec.sfv_flag = 0;
931	vec.sfv_off = offset;
932	vec.sfv_len = count;
933
934	res = sendfilev (ofd, &vec, 1, &sbytes);
935
936	if (res < 0 && sbytes)
937	res = sbytes;
938	}
939
940	# endif
941	#else
942	res = -1;
943	errno = ENOSYS;
944	#endif
945
946	if (res < 0
947	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948	#if __solaris
949	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
950	#endif
951	)
952	)
953	{
954	/* emulate sendfile. this is a major pain in the ass */
955	dBUF;
956
957	res = 0;
958
959	while (count)
960	{
961	ssize_t cnt;
962
963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965	if (cnt <= 0)
966	{
967	if (cnt && !res) res = -1;
968	break;
969	}
970
971	cnt = write (ofd, aio_buf, cnt);
972
973	if (cnt <= 0)
974	{
975	if (cnt && !res) res = -1;
976	break;
977	}
978
979	offset += cnt;
980	res += cnt;
981	count -= cnt;
982	}
983	}
984
985	return res;
986	}
987
988	/* read a full directory */
989	static void scandir_ (aio_req req, worker *self)
990	{
991	DIR *dirp;
992	union
993	{
994	struct dirent d;
995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996	} *u;
997	struct dirent *entp;
998	char *name, *names;
999	int memlen = 4096;
1000	int memofs = 0;
1001	int res = 0;
1002	int errorno;
1003
1004	LOCK (wrklock);
1005	self->dirp = dirp = opendir (req->ptr1);
1006	self->dbuf = u = malloc (sizeof (*u));
1007	req->flags |= FLAG_PTR2_FREE;
1008	req->ptr2 = names = malloc (memlen);
1009	UNLOCK (wrklock);
1010
1011	if (dirp && u && names)
1012	for (;;)
1013	{
1014	errno = 0;
1015	readdir_r (dirp, &u->d, &entp);
1016
1017	if (!entp)
1018	break;
1019
1020	name = entp->d_name;
1021
1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023	{
1024	int len = strlen (name) + 1;
1025
1026	res++;
1027
1028	while (memofs + len > memlen)
1029	{
1030	memlen *= 2;
1031	LOCK (wrklock);
1032	req->ptr2 = names = realloc (names, memlen);
1033	UNLOCK (wrklock);
1034
1035	if (!names)
1036	break;
1037	}
1038
1039	memcpy (names + memofs, name, len);
1040	memofs += len;
1041	}
1042	}
1043
1044	if (errno)
1045	res = -1;
1046
1047	req->result = res;
1048	}
1049
1050	/*****************************************************************************/
1051
1052	static void *aio_proc (void *thr_arg)
1053	{
1054	aio_req req;
1055	struct timespec ts;
1056	worker *self = (worker *)thr_arg;
1057
1058	/* try to distribute timeouts somewhat evenly */
1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060	* (1000000000UL / 1024UL);
1061
1062	for (;;)
1063	{
1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066	LOCK (reqlock);
1067
1068	for (;;)
1069	{
1070	self->req = req = reqq_shift (&req_queue);
1071
1072	if (req)
1073	break;
1074
1075	++idle;
1076
1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078	== ETIMEDOUT)
1079	{
1080	if (idle > max_idle)
1081	{
1082	--idle;
1083	UNLOCK (reqlock);
1084	LOCK (wrklock);
1085	--started;
1086	UNLOCK (wrklock);
1087	goto quit;
1088	}
1089
1090	/* we are allowed to idle, so do so without any timeout */
1091	pthread_cond_wait (&reqwait, &reqlock);
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093	}
1094
1095	--idle;
1096	}
1097
1098	--nready;
1099
1100	UNLOCK (reqlock);
1101
1102	errno = 0; /* strictly unnecessary */
1103
1104	if (!(req->flags & FLAG_CANCELLED))
1105	switch (req->type)
1106	{
1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118	case REQ_CLOSE: req->result = close (req->int1); break;
1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
1129	case REQ_READDIR: scandir_ (req, self); break;
1130
1131	case REQ_BUSY:
1132	{
1133	struct timeval tv;
1134
1135	tv.tv_sec = req->int1;
1136	tv.tv_usec = req->int2;
1137
1138	req->result = select (0, 0, 0, 0, &tv);
1139	}
1140
1141	case REQ_GROUP:
1142	case REQ_NOP:
1143	break;
1144
1145	case REQ_QUIT:
1146	goto quit;
1147
1148	default:
1149	req->result = ENOSYS;
1150	break;
1151	}
1152
1153	req->errorno = errno;
1154
1155	LOCK (reslock);
1156
1157	++npending;
1158
1159	if (!reqq_push (&res_queue, req))
1160	/* write a dummy byte to the pipe so fh becomes ready */
1161	write (respipe [1], &respipe, 1);
1162
1163	self->req = 0;
1164	worker_clear (self);
1165
1166	UNLOCK (reslock);
1167	}
1168
1169	quit:
1170	LOCK (wrklock);
1171	worker_free (self);
1172	UNLOCK (wrklock);
1173
1174	return 0;
1175	}
1176
1177	/*****************************************************************************/
1178
1179	static void atfork_prepare (void)
1180	{
1181	LOCK (wrklock);
1182	LOCK (reqlock);
1183	LOCK (reslock);
1184	#if !HAVE_PREADWRITE
1185	LOCK (preadwritelock);
1186	#endif
1187	#if !HAVE_READDIR_R
1188	LOCK (readdirlock);
1189	#endif
1190	}
1191
1192	static void atfork_parent (void)
1193	{
1194	#if !HAVE_READDIR_R
1195	UNLOCK (readdirlock);
1196	#endif
1197	#if !HAVE_PREADWRITE
1198	UNLOCK (preadwritelock);
1199	#endif
1200	UNLOCK (reslock);
1201	UNLOCK (reqlock);
1202	UNLOCK (wrklock);
1203	}
1204
1205	static void atfork_child (void)	441	static void atfork_child (void)
1206	{	442	{
1207	aio_req prv;
1208
1209	while (prv = reqq_shift (&req_queue))
1210	req_free (prv);
1211
1212	while (prv = reqq_shift (&res_queue))
1213	req_free (prv);
1214
1215	while (wrk_first.next != &wrk_first)
1216	{
1217	worker *wrk = wrk_first.next;
1218
1219	if (wrk->req)
1220	req_free (wrk->req);
1221
1222	worker_clear (wrk);
1223	worker_free (wrk);
1224	}
1225
1226	started = 0;
1227	idle = 0;
1228	nreqs = 0;
1229	nready = 0;
1230	npending = 0;
1231
1232	close (respipe [0]);
1233	close (respipe [1]);
1234	create_pipe ();	443	create_respipe ();
1235
1236	atfork_parent ();
1237	}	444	}
1238		445
1239	#define dREQ \	446	#define dREQ \
1240	aio_req req; \	447	aio_req req; \
1241	int req_pri = next_pri; \	448	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \	449	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1243	\	450	\
1244	if (SvOK (callback) && !SvROK (callback)) \	451	if (SvOK (callback) && !SvROK (callback)) \
1245	croak ("callback must be undef or of reference type"); \	452	croak ("callback must be undef or of reference type"); \
1246	\	453	\
1247	Newz (0, req, 1, aio_cb); \	454	Newz (0, req, 1, eio_req); \
1248	if (!req) \	455	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \	456	croak ("out of memory during eio_req allocation"); \
1250	\	457	\
1251	req->callback = newSVsv (callback); \	458	req->callback = newSVsv (callback); \
1252	req->pri = req_pri	459	req->pri = req_pri
1253		460
1254	#define REQ_SEND \	461	#define REQ_SEND \
1255	req_send (req); \	462	req_submit (req); \
1256	\	463	\
1257	if (GIMME_V != G_VOID) \	464	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));	465	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259		466
1260	MODULE = IO::AIO PACKAGE = IO::AIO	467	MODULE = IO::AIO PACKAGE = IO::AIO
1261		468
1262	PROTOTYPES: ENABLE	469	PROTOTYPES: ENABLE
1263		470
1264	BOOT:	471	BOOT:
1265	{	472	{
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	473	stash = gv_stashpv ("IO::AIO", 1);
1267		474
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	475	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	476	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	477	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	478	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	479	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		480	#ifdef _WIN32
		481	X_MUTEX_CHECK (wrklock);
		482	X_MUTEX_CHECK (reslock);
		483	X_MUTEX_CHECK (reqlock);
		484	X_MUTEX_CHECK (reqwait);
		485	X_MUTEX_CHECK (preadwritelock);
		486	X_MUTEX_CHECK (readdirlock);
		487
		488	X_COND_CHECK (reqwait);
		489	#else
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	490	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		491	#endif
1274		492
1275	create_pipe ();	493	create_respipe ();
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	494
		495	if (eio_init (want_poll, done_poll) < 0)
		496	croak ("IO::AIO: unable to initialise eio library");
		497
		498	/* atfork child called in fifo order, so before eio's handler */
		499	X_THREAD_ATFORK (0, 0, atfork_child);
1277	}	500	}
1278		501
1279	void	502	void
1280	max_poll_reqs (int nreqs)	503	max_poll_reqs (int nreqs)
1281	PROTOTYPE: $	504	PROTOTYPE: $
1282	CODE:	505	CODE:
1283	max_poll_reqs = nreqs;	506	eio_set_max_poll_reqs (nreqs);
1284		507
1285	void	508	void
1286	max_poll_time (double nseconds)	509	max_poll_time (double nseconds)
1287	PROTOTYPE: $	510	PROTOTYPE: $
1288	CODE:	511	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	512	eio_set_max_poll_time (nseconds);
1290		513
1291	void	514	void
1292	min_parallel (int nthreads)	515	min_parallel (int nthreads)
1293	PROTOTYPE: $	516	PROTOTYPE: $
		517	CODE:
		518	eio_set_min_parallel (nthreads);
1294		519
1295	void	520	void
1296	max_parallel (int nthreads)	521	max_parallel (int nthreads)
1297	PROTOTYPE: $	522	PROTOTYPE: $
		523	CODE:
		524	eio_set_max_parallel (nthreads);
1298		525
1299	void	526	void
1300	max_idle (int nthreads)	527	max_idle (int nthreads)
1301	PROTOTYPE: $	528	PROTOTYPE: $
1302	CODE:	529	CODE:
1303	set_max_idle (nthreads);	530	eio_set_max_idle (nthreads);
1304		531
1305	int	532	void
1306	max_outstanding (int maxreqs)	533	max_outstanding (int maxreqs)
1307	PROTOTYPE: $	534	PROTOTYPE: $
1308	CODE:	535	CODE:
1309	RETVAL = max_outstanding;
1310	max_outstanding = maxreqs;	536	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		537
1314	void	538	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	539	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$	540	PROTOTYPE: $$$;$
1321	PPCODE:	541	PPCODE:
1322	{	542	{
1323	dREQ;	543	dREQ;
1324		544
1325	req->type = REQ_OPEN;	545	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	546	req->sv1 = newSVsv (pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);	547	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	548	req->int1 = flags;
1329	req->mode = mode;	549	req->int2 = mode;
1330		550
1331	REQ_SEND;	551	REQ_SEND;
1332	}	552	}
1333		553
1334	void	554	void
1335	aio_close (fh,callback=&PL_sv_undef)	555	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$	556	PROTOTYPE: $;$
1339	ALIAS:	557	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	558	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = EIO_FDATASYNC
1343	PPCODE:	560	PPCODE:
1344	{	561	{
1345	dREQ;	562	dREQ;
1346		563
1347	req->type = ix;	564	req->type = ix;
1348	req->fh = newSVsv (fh);	565	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1350		567
1351	REQ_SEND (req);	568	REQ_SEND (req);
1352	}	569	}
1353		570
1354	void	571	void
		572	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		573	PROTOTYPE: $;$
		574	PPCODE:
		575	{
		576	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		577	dREQ;
		578
		579	if (close_pipe < 0)
		580	{
		581	int pipefd [2];
		582
		583	if (pipe (pipefd) < 0
		584	|| close (pipefd [1]) < 0
		585	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		586	abort (); /*D*/
		587
		588	close_pipe = pipefd [0];
		589	}
		590
		591	req->type = EIO_DUP2;
		592	req->int1 = close_pipe;
		593	req->sv2 = newSVsv (fh);
		594	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		595
		596	REQ_SEND (req);
		597	}
		598
		599	void
1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	600	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	601	ALIAS:
1363	aio_read = REQ_READ	602	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	603	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$	604	PROTOTYPE: $$$$$;$
1366	PPCODE:	605	PPCODE:
1367	{	606	{
1368	STRLEN svlen;	607	STRLEN svlen;
1369	char *svptr = SvPVbyte (data, svlen);	608	char *svptr = SvPVbyte (data, svlen);
		609	UV len = SvUV (length);
1370		610
1371	SvUPGRADE (data, SVt_PV);	611	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);	612	SvPOK_on (data);
1373		613
1374	if (dataoffset < 0)	614	if (dataoffset < 0)
1375	dataoffset += svlen;	615	dataoffset += svlen;
1376		616
1377	if (dataoffset < 0 || dataoffset > svlen)	617	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	618	croak ("dataoffset outside of data scalar");
1379		619
1380	if (ix == REQ_WRITE)	620	if (ix == EIO_WRITE)
1381	{	621	{
1382	/* write: check length and adjust. */	622	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	623	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	624	len = svlen - dataoffset;
1385	}	625	}
1386	else	626	else
1387	{	627	{
1388	/* read: grow scalar as necessary */	628	/* read: grow scalar as necessary */
1389	svptr = SvGROW (data, length + dataoffset);	629	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	630	}
1391		631
1392	if (length < 0)	632	if (len < 0)
1393	croak ("length must not be negative");	633	croak ("length must not be negative");
1394		634
1395	{	635	{
1396	dREQ;	636	dREQ;
1397		637
1398	req->type = ix;	638	req->type = ix;
1399	req->fh = newSVsv (fh);	639	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	640	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1401	: IoOFP (sv_2io (fh)));	641	: IoOFP (sv_2io (fh)));
1402	req->offs = offset;	642	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1403	req->size = length;	643	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	644	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	645	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	646	req->stroffset = dataoffset;
1407		647
1408	if (!SvREADONLY (data))	648	if (!SvREADONLY (data))
1409	{	649	{
1410	SvREADONLY_on (data);	650	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	651	req->flags |= FLAG_SV2_RO_OFF;
1412	}	652	}
1413		653
1414	REQ_SEND;	654	REQ_SEND;
1415	}	655	}
1416	}	656	}
1417		657
1418	void	658	void
1419	aio_readlink (path,callback=&PL_sv_undef)	659	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1420	SV8 * path
1421	SV * callback
1422	PROTOTYPE: $$;$	660	PROTOTYPE: $$;$
1423	PPCODE:	661	PPCODE:
1424	{	662	{
1425	SV *data;	663	SV *data;
1426	dREQ;	664	dREQ;
1427		665
1428	data = newSV (NAME_MAX);	666	data = newSV (NAME_MAX);
1429	SvPOK_on (data);	667	SvPOK_on (data);
1430		668
1431	req->type = REQ_READLINK;	669	req->type = EIO_READLINK;
1432	req->fh = newSVsv (path);	670	req->sv1 = newSVsv (path);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);	671	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->sv1 = data;	672	req->sv2 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);	673	req->ptr2 = SvPVbyte_nolen (data);
1436		674
1437	REQ_SEND;	675	REQ_SEND;
1438	}	676	}
1439		677
1440	void	678	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	679	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$	680	PROTOTYPE: $$$$;$
1448	PPCODE:	681	PPCODE:
1449	{	682	{
1450	dREQ;	683	dREQ;
1451		684
1452	req->type = REQ_SENDFILE;	685	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	686	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	687	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1455	req->sv2 = newSVsv (in_fh);	688	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	689	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1457	req->offs = in_offset;	690	req->offs = SvVAL64 (in_offset);
1458	req->size = length;	691	req->size = length;
1459		692
1460	REQ_SEND;	693	REQ_SEND;
1461	}	694	}
1462		695
1463	void	696	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	697	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$	698	PROTOTYPE: $$$;$
1470	PPCODE:	699	PPCODE:
1471	{	700	{
1472	dREQ;	701	dREQ;
1473		702
1474	req->type = REQ_READAHEAD;	703	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	704	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	705	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1477	req->offs = offset;	706	req->offs = SvVAL64 (offset);
1478	req->size = length;	707	req->size = length;
1479		708
1480	REQ_SEND;	709	REQ_SEND;
1481	}	710	}
1482		711
1483	void	712	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	713	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	714	ALIAS:
1488	aio_stat = REQ_STAT	715	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	716	aio_lstat = EIO_LSTAT
1490	PPCODE:	717	PPCODE:
1491	{	718	{
1492	dREQ;	719	dREQ;
1493		720
1494	req->ptr2 = malloc (sizeof (Stat_t));	721	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1495	if (!req->ptr2)	722	if (!req->ptr2)
1496	{	723	{
1497	req_free (req);	724	req_destroy (req);
1498	croak ("out of memory during aio_stat statdata allocation");	725	croak ("out of memory during aio_stat statdata allocation");
1499	}	726	}
1500		727
1501	req->flags |= FLAG_PTR2_FREE;	728	req->flags |= EIO_FLAG_PTR2_FREE;
		729	req->sv1 = newSVsv (fh_or_path);
1502		730
1503	if (SvPOK (fh_or_path))	731	if (SvPOK (fh_or_path))
1504	{	732	{
1505	req->type = ix;	733	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);	734	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}	735	}
1509	else	736	else
1510	{	737	{
1511	req->type = REQ_FSTAT;	738	req->type = EIO_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}	740	}
1515		741
1516	REQ_SEND;	742	REQ_SEND;
1517	}	743	}
1518		744
1519	void	745	void
		746	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		747	PPCODE:
		748	{
		749	dREQ;
		750
		751	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		752	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		753	req->sv1 = newSVsv (fh_or_path);
		754
		755	if (SvPOK (fh_or_path))
		756	{
		757	req->type = EIO_UTIME;
		758	req->ptr1 = SvPVbyte_nolen (req->sv1);
		759	}
		760	else
		761	{
		762	req->type = EIO_FUTIME;
		763	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		764	}
		765
		766	REQ_SEND;
		767	}
		768
		769	void
		770	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		771	PPCODE:
		772	{
		773	dREQ;
		774
		775	req->sv1 = newSVsv (fh_or_path);
		776	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		777
		778	if (SvPOK (fh_or_path))
		779	{
		780	req->type = EIO_TRUNCATE;
		781	req->ptr1 = SvPVbyte_nolen (req->sv1);
		782	}
		783	else
		784	{
		785	req->type = EIO_FTRUNCATE;
		786	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		787	}
		788
		789	REQ_SEND;
		790	}
		791
		792	void
		793	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		794	ALIAS:
		795	aio_chmod = EIO_CHMOD
		796	aio_fchmod = EIO_FCHMOD
		797	aio_mkdir = EIO_MKDIR
		798	PPCODE:
		799	{
		800	dREQ;
		801
		802	req->type = ix;
		803	req->int2 = mode;
		804	req->sv1 = newSVsv (fh_or_path);
		805
		806	if (ix == EIO_FCHMOD)
		807	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		808	else
		809	req->ptr1 = SvPVbyte_nolen (req->sv1);
		810
		811	REQ_SEND;
		812	}
		813
		814	void
		815	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		816	PPCODE:
		817	{
		818	dREQ;
		819
		820	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		821	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		822	req->sv1 = newSVsv (fh_or_path);
		823
		824	if (SvPOK (fh_or_path))
		825	{
		826	req->type = EIO_CHOWN;
		827	req->ptr1 = SvPVbyte_nolen (req->sv1);
		828	}
		829	else
		830	{
		831	req->type = EIO_FCHOWN;
		832	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		833	}
		834
		835	REQ_SEND;
		836	}
		837
		838	void
1520	aio_unlink (pathname,callback=&PL_sv_undef)	839	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	840	ALIAS:
1524	aio_unlink = REQ_UNLINK	841	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	842	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	843	aio_readdir = EIO_READDIR
1527	PPCODE:	844	PPCODE:
1528	{	845	{
1529	dREQ;	846	dREQ;
1530		847
1531	req->type = ix;	848	req->type = ix;
…		…
1534		851
1535	REQ_SEND;	852	REQ_SEND;
1536	}	853	}
1537		854
1538	void	855	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	856	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	857	ALIAS:
1544	aio_link = REQ_LINK	858	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	859	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	860	aio_rename = EIO_RENAME
1547	PPCODE:	861	PPCODE:
1548	{	862	{
1549	dREQ;	863	dREQ;
1550		864
1551	req->type = ix;	865	req->type = ix;
1552	req->fh = newSVsv (oldpath);	866	req->sv1 = newSVsv (oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1554	req->sv1 = newSVsv (newpath);
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);	867	req->ptr1 = SvPVbyte_nolen (req->sv1);
		868	req->sv2 = newSVsv (newpath);
		869	req->ptr2 = SvPVbyte_nolen (req->sv2);
1556		870
1557	REQ_SEND;	871	REQ_SEND;
1558	}	872	}
1559		873
1560	void	874	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	875	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562	SV8 * pathname
1563	SV * callback
1564	UV mode
1565	UV dev
1566	PPCODE:	876	PPCODE:
1567	{	877	{
1568	dREQ;	878	dREQ;
1569		879
1570	req->type = REQ_MKNOD;	880	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);	881	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	882	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	883	req->int2 = (mode_t)mode;
1574	req->offs = dev;	884	req->offs = dev;
1575		885
1576	REQ_SEND;	886	REQ_SEND;
1577	}	887	}
1578		888
1579	void	889	void
1580	aio_busy (delay,callback=&PL_sv_undef)	890	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	891	PPCODE:
1584	{	892	{
1585	dREQ;	893	dREQ;
1586		894
1587	req->type = REQ_BUSY;	895	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	896	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		897
1591	REQ_SEND;	898	REQ_SEND;
1592	}	899	}
1593		900
1594	void	901	void
1595	aio_group (callback=&PL_sv_undef)	902	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$	903	PROTOTYPE: ;$
1598	PPCODE:	904	PPCODE:
1599	{	905	{
1600	dREQ;	906	dREQ;
1601		907
1602	req->type = REQ_GROUP;	908	req->type = EIO_GROUP;
1603		909
1604	req_send (req);	910	eio_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	911	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1606	}	912	}
1607		913
1608	void	914	void
1609	aio_nop (callback=&PL_sv_undef)	915	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	916	ALIAS:
		917	aio_nop = EIO_NOP
		918	aio_sync = EIO_SYNC
1611	PPCODE:	919	PPCODE:
1612	{	920	{
1613	dREQ;	921	dREQ;
1614		922
1615	req->type = REQ_NOP;	923	req->type = ix;
1616		924
1617	REQ_SEND;	925	REQ_SEND;
1618	}	926	}
1619		927
1620	int	928	int
1621	aioreq_pri (int pri = 0)	929	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$	930	PROTOTYPE: ;$
1623	CODE:	931	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	932	RETVAL = next_pri - EIO_PRI_BIAS;
1625	if (items > 0)	933	if (items > 0)
1626	{	934	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	935	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	936	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	937	next_pri = pri + EIO_PRI_BIAS;
1630	}	938	}
1631	OUTPUT:	939	OUTPUT:
1632	RETVAL	940	RETVAL
1633		941
1634	void	942	void
1635	aioreq_nice (int nice = 0)	943	aioreq_nice (int nice = 0)
1636	CODE:	944	CODE:
1637	nice = next_pri - nice;	945	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	946	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	947	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	948	next_pri = nice + EIO_PRI_BIAS;
1641		949
1642	void	950	void
1643	flush ()	951	flush ()
1644	PROTOTYPE:	952	PROTOTYPE:
1645	CODE:	953	CODE:
1646	while (nreqs)	954	while (eio_nreqs ())
1647	{	955	{
1648	poll_wait ();	956	poll_wait ();
1649	poll_cb ();	957	poll_cb ();
1650	}	958	}
1651		959
1652	int	960	int
1653	poll()	961	poll()
1654	PROTOTYPE:	962	PROTOTYPE:
1655	CODE:	963	CODE:
1656	if (nreqs)
1657	{
1658	poll_wait ();	964	poll_wait ();
1659	RETVAL = poll_cb ();	965	RETVAL = poll_cb ();
1660	}
1661	else
1662	RETVAL = 0;
1663	OUTPUT:	966	OUTPUT:
1664	RETVAL	967	RETVAL
1665		968
1666	int	969	int
1667	poll_fileno()	970	poll_fileno()
…		…
1681		984
1682	void	985	void
1683	poll_wait()	986	poll_wait()
1684	PROTOTYPE:	987	PROTOTYPE:
1685	CODE:	988	CODE:
1686	if (nreqs)
1687	poll_wait ();	989	poll_wait ();
1688		990
1689	int	991	int
1690	nreqs()	992	nreqs()
1691	PROTOTYPE:	993	PROTOTYPE:
1692	CODE:	994	CODE:
1693	RETVAL = nreqs;	995	RETVAL = eio_nreqs ();
1694	OUTPUT:	996	OUTPUT:
1695	RETVAL	997	RETVAL
1696		998
1697	int	999	int
1698	nready()	1000	nready()
1699	PROTOTYPE:	1001	PROTOTYPE:
1700	CODE:	1002	CODE:
1701	RETVAL = get_nready ();	1003	RETVAL = eio_nready ();
1702	OUTPUT:	1004	OUTPUT:
1703	RETVAL	1005	RETVAL
1704		1006
1705	int	1007	int
1706	npending()	1008	npending()
1707	PROTOTYPE:	1009	PROTOTYPE:
1708	CODE:	1010	CODE:
1709	RETVAL = get_npending ();	1011	RETVAL = eio_npending ();
1710	OUTPUT:	1012	OUTPUT:
1711	RETVAL	1013	RETVAL
1712		1014
1713	int	1015	int
1714	nthreads()	1016	nthreads()
1715	PROTOTYPE:	1017	PROTOTYPE:
1716	CODE:	1018	CODE:
1717	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1019	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1718	RETVAL = started;	1020	RETVAL = started;
1719	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	1021	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1720	OUTPUT:	1022	OUTPUT:
1721	RETVAL	1023	RETVAL
1722		1024
		1025	void _on_next_submit (SV *cb)
		1026	CODE:
		1027	SvREFCNT_dec (on_next_submit);
		1028	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1029
1723	PROTOTYPES: DISABLE	1030	PROTOTYPES: DISABLE
1724		1031
1725	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1032	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1726		1033
1727	void	1034	void
1728	cancel (aio_req_ornot req)	1035	cancel (aio_req_ornot req)
1729	CODE:	1036	CODE:
1730	req_cancel (req);	1037	eio_cancel (req);
1731		1038
1732	void	1039	void
1733	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1040	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1734	CODE:	1041	CODE:
1735	SvREFCNT_dec (req->callback);	1042	SvREFCNT_dec (req->callback);
…		…
1740	void	1047	void
1741	add (aio_req grp, ...)	1048	add (aio_req grp, ...)
1742	PPCODE:	1049	PPCODE:
1743	{	1050	{
1744	int i;	1051	int i;
1745	aio_req req;
1746		1052
1747	if (grp->int1 == 2)	1053	if (grp->int1 == 2)
1748	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1054	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1749		1055
1750	for (i = 1; i < items; ++i )	1056	for (i = 1; i < items; ++i )
1751	{	1057	{
		1058	aio_req req;
		1059
1752	if (GIMME_V != G_VOID)	1060	if (GIMME_V != G_VOID)
1753	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1061	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1754		1062
1755	req = SvAIO_REQ (ST (i));	1063	req = SvAIO_REQ (ST (i));
1756		1064
1757	if (req)	1065	if (req)
1758	{	1066	eio_grp_add (grp, req);
1759	++grp->size;
1760	req->grp = grp;
1761
1762	req->grp_prev = 0;
1763	req->grp_next = grp->grp_first;
1764
1765	if (grp->grp_first)
1766	grp->grp_first->grp_prev = req;
1767
1768	grp->grp_first = req;
1769	}
1770	}	1067	}
1771	}	1068	}
1772		1069
1773	void	1070	void
1774	cancel_subs (aio_req_ornot req)	1071	cancel_subs (aio_req_ornot req)
…		…
1799	grp->errorno = errorno;	1096	grp->errorno = errorno;
1800		1097
1801	void	1098	void
1802	limit (aio_req grp, int limit)	1099	limit (aio_req grp, int limit)
1803	CODE:	1100	CODE:
1804	grp->int2 = limit;	1101	eio_grp_limit (grp, limit);
1805	aio_grp_feed (grp);
1806		1102
1807	void	1103	void
1808	feed (aio_req grp, SV *callback=&PL_sv_undef)	1104	feed (aio_req grp, SV *callback=&PL_sv_undef)
1809	CODE:	1105	CODE:
1810	{	1106	{
…		…
1812	grp->sv2 = newSVsv (callback);	1108	grp->sv2 = newSVsv (callback);
1813		1109
1814	if (grp->int2 <= 0)	1110	if (grp->int2 <= 0)
1815	grp->int2 = 2;	1111	grp->int2 = 2;
1816		1112
1817	aio_grp_feed (grp);	1113	eio_grp_limit (grp, grp->int2);
1818	}	1114	}
1819		1115

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