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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC vs.
Revision 1.116 by root, Sat May 10 19:25:33 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 int max_outstanding = 0;
145	PRI_MIN = -4,
146	PRI_MAX = 4,
147		107
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;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
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)
385	{
386	--grp->size;
387
388	/* call feeder, if applicable */
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{
394	req_invoke (grp);
395	req_free (grp);
396	}
397	}
398
399	static void req_invoke (aio_req req)	171	static int req_invoke (eio_req *req)
400	{	172	{
401	dSP;	173	dSP;
402		174
403	if (req->flags & FLAG_SV1_RO_OFF)	175	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	176	SvREADONLY_off (req->sv2);
405		177
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
407	{	179	{
408	ENTER;	180	ENTER;
409	SAVETMPS;	181	SAVETMPS;
410	PUSHMARK (SP);	182	PUSHMARK (SP);
411	EXTEND (SP, 1);	183	EXTEND (SP, 1);
412		184
413	switch (req->type)	185	switch (req->type)
414	{	186	{
415	case REQ_READDIR:	187	case EIO_READDIR:
416	{	188	{
417	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
418		190
419	if (req->result >= 0)	191	if (req->result >= 0)
420	{	192	{
…		…
437		209
438	PUSHs (rv);	210	PUSHs (rv);
439	}	211	}
440	break;	212	break;
441		213
442	case REQ_OPEN:	214	case EIO_OPEN:
443	{	215	{
444	/* convert fd to fh */	216	/* convert fd to fh */
445	SV *fh;	217	SV *fh = &PL_sv_undef;
446		218
447	PUSHs (sv_2mortal (newSViv (req->result)));	219	if (req->result >= 0)
448	PUTBACK;	220	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	221	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
451		228
452	fh = POPs;	229	symlen = snprintf (
453	PUSHMARK (SP);	230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
		235	);
		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
454	XPUSHs (fh);	241	PUSHs (fh);
455	}	242	}
456	break;	243	break;
457		244
458	case REQ_GROUP:	245	case EIO_GROUP:
459	req->int1 = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
460		247
461	if (req->sv1)	248	if (req->sv1)
462	{	249	{
463	int i;	250	int i;
…		…
467	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
468	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
469	}	256	}
470	break;	257	break;
471		258
472	case REQ_NOP:	259	case EIO_NOP:
473	case REQ_BUSY:	260	case EIO_BUSY:
474	break;	261	break;
475		262
476	case REQ_READLINK:	263	case EIO_READLINK:
477	if (req->result > 0)	264	if (req->result > 0)
478	{	265	{
479	SvCUR_set (req->sv1, req->result);	266	SvCUR_set (req->sv2, req->result);
480	*SvEND (req->sv1) = 0;	267	*SvEND (req->sv2) = 0;
481	PUSHs (req->sv1);	268	PUSHs (req->sv2);
482	}	269	}
483	break;	270	break;
484		271
485	case REQ_STAT:	272	case EIO_STAT:
486	case REQ_LSTAT:	273	case EIO_LSTAT:
487	case REQ_FSTAT:	274	case EIO_FSTAT:
488	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
489	PL_laststatval = req->result;	276	PL_laststatval = req->result;
490	PL_statcache = *(Stat_t *)(req->ptr2);	277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
491	PUSHs (sv_2mortal (newSViv (req->result)));	278	PUSHs (sv_2mortal (newSViv (req->result)));
492	break;	279	break;
493		280
494	case REQ_READ:	281	case EIO_READ:
495	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
496	*SvEND (req->sv1) = 0;	283	*SvEND (req->sv2) = 0;
497	PUSHs (sv_2mortal (newSViv (req->result)));	284	PUSHs (sv_2mortal (newSViv (req->result)));
498	break;	285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
499		291
500	default:	292	default:
501	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
502	break;	294	break;
503	}	295	}
504		296
505	errno = req->errorno;	297	errno = req->errorno;
506		298
507	PUTBACK;	299	PUTBACK;
508	call_sv (req->callback, G_VOID | G_EVAL);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
509	SPAGAIN;	301	SPAGAIN;
510		302
511	FREETMPS;	303	FREETMPS;
512	LEAVE;	304	LEAVE;
		305
		306	PUTBACK;
513	}	307	}
514		308
515	if (req->grp)	309	return !!SvTRUE (ERRSV);
516	{
517	aio_req grp = req->grp;
518
519	/* unlink request */
520	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
521	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
522
523	if (grp->grp_first == req)
524	grp->grp_first = req->grp_next;
525
526	aio_grp_dec (grp);
527	}
528
529	if (SvTRUE (ERRSV))
530	{
531	req_free (req);
532	croak (0);
533	}
534	}	310	}
535		311
536	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
537	{	313	{
538	if (req->self)	314	if (req->self)
539	{	315	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
542	}	318	}
543		319
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	320	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	321	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
548		323
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	324	Safefree (req);
553	}	325	}
554		326
555	static void req_cancel_subs (aio_req grp)	327	static void req_cancel_subs (aio_req grp)
556	{	328	{
557	aio_req sub;	329	aio_req sub;
558		330
559	if (grp->type != REQ_GROUP)	331	if (grp->type != EIO_GROUP)
560	return;	332	return;
561		333
562	SvREFCNT_dec (grp->sv2);	334	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	335	grp->sv2 = 0;
564		336
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	337	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	338	}
568		339
569	static void req_cancel (aio_req req)	340	#ifdef USE_SOCKETS_AS_HANDLES
570	{	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
571	req->flags |= FLAG_CANCELLED;	342	#else
572		343	# define TO_SOCKET(x) (x)
573	req_cancel_subs (req);
574	}
575
576	static void *aio_proc(void *arg);
577
578	static void start_thread (void)
579	{
580	sigset_t fullsigset, oldsigset;
581	pthread_attr_t attr;
582
583	worker *wrk = calloc (1, sizeof (worker));
584
585	if (!wrk)
586	croak ("unable to allocate worker thread data");
587
588	pthread_attr_init (&attr);
589	pthread_attr_setstacksize (&attr, STACKSIZE);
590	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
591	#ifdef PTHREAD_SCOPE_PROCESS
592	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
593	#endif	344	#endif
594		345
595	sigfillset (&fullsigset);	346	static void
		347	create_respipe (void)
		348	{
		349	int old_readfd = respipe [0];
596		350
597	LOCK (wrklock);	351	if (respipe [1] >= 0)
598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	352	respipe_close (TO_SOCKET (respipe [1]));
599		353
600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
		358	#endif
		359	croak ("unable to initialize result pipe");
		360
		361	if (old_readfd >= 0)
601	{	362	{
602	wrk->prev = &wrk_first;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
603	wrk->next = wrk_first.next;	364	croak ("unable to initialize result pipe(2)");
604	wrk_first.next->prev = wrk;	365
605	wrk_first.next = wrk;	366	respipe_close (respipe [0]);
606	++started;	367	respipe [0] = old_readfd;
607	}	368	}
608	else
609	free (wrk);
610		369
611	sigprocmask (SIG_SETMASK, &oldsigset, 0);	370	#ifdef _WIN32
612	UNLOCK (wrklock);	371	int arg = 1;
613	}	372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		374	#else
		375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		377	#endif
		378	croak ("unable to initialize result pipe(3)");
614		379
615	static void maybe_start_thread ()	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
616	{	381	respipe_osf [1] = TO_SOCKET (respipe [1]);
617	if (get_nthreads () >= wanted)
618	return;
619
620	/* todo: maybe use idle here, but might be less exact */
621	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
622	return;
623
624	start_thread ();
625	}	382	}
626		383
627	static void req_send (aio_req req)
628	{
629	++nreqs;
630
631	LOCK (reqlock);
632	++nready;
633	reqq_push (&req_queue, req);
634	pthread_cond_signal (&reqwait);
635	UNLOCK (reqlock);
636
637	maybe_start_thread ();
638	}
639
640	static void end_thread (void)
641	{
642	aio_req req;
643
644	Newz (0, req, 1, aio_cb);
645
646	req->type = REQ_QUIT;
647	req->pri = PRI_MAX + PRI_BIAS;
648
649	LOCK (reqlock);
650	reqq_push (&req_queue, req);
651	pthread_cond_signal (&reqwait);
652	UNLOCK (reqlock);
653
654	LOCK (wrklock);
655	--started;
656	UNLOCK (wrklock);
657	}
658
659	static void set_max_idle (int nthreads)
660	{
661	if (WORDACCESS_UNSAFE) LOCK (reqlock);
662	max_idle = nthreads <= 0 ? 1 : nthreads;
663	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
664	}
665
666	static void min_parallel (int nthreads)
667	{
668	if (wanted < nthreads)
669	wanted = nthreads;
670	}
671
672	static void max_parallel (int nthreads)
673	{
674	if (wanted > nthreads)
675	wanted = nthreads;
676
677	while (started > wanted)
678	end_thread ();
679	}
680
681	static void poll_wait ()	384	static void poll_wait (void)
682	{	385	{
683	fd_set rfd;	386	fd_set rfd;
684		387
685	while (nreqs)	388	while (eio_nreqs ())
686	{	389	{
687	int size;	390	int size;
688	if (WORDACCESS_UNSAFE) LOCK (reslock);	391
		392	X_LOCK (reslock);
689	size = res_queue.size;	393	size = res_queue.size;
690	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	394	X_UNLOCK (reslock);
691		395
692	if (size)	396	if (size)
693	return;	397	return;
694		398
695	maybe_start_thread ();	399	maybe_start_thread ();
696		400
697	FD_ZERO(&rfd);	401	FD_ZERO (&rfd);
698	FD_SET(respipe [0], &rfd);	402	FD_SET (respipe [0], &rfd);
699		403
700	select (respipe [0] + 1, &rfd, 0, 0, 0);	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
701	}	405	}
702	}	406	}
703		407
704	static int poll_cb ()	408	static int poll_cb (void)
705	{	409	{
706	dSP;	410	int res;
707	int count = 0;
708	int maxreqs = max_poll_reqs;
709	int do_croak = 0;
710	struct timeval tv_start, tv_now;
711	aio_req req;
712		411
713	if (max_poll_time)	412	do
714	gettimeofday (&tv_start, 0);
715
716	for (;;)
717	{	413	{
718	for (;;)	414	res = eio_poll ();
719	{
720	maybe_start_thread ();
721		415
722	LOCK (reslock);	416	if (res > 0)
723	req = reqq_shift (&res_queue);
724
725	if (req)
726	{
727	--npending;
728
729	if (!res_queue.size)
730	{
731	/* read any signals sent by the worker threads */
732	char buf [32];
733	while (read (respipe [0], buf, 32) == 32)
734	;
735	}
736	}
737
738	UNLOCK (reslock);
739
740	if (!req)
741	break;
742
743	--nreqs;
744
745	if (req->type == REQ_GROUP && req->size)
746	{
747	req->int1 = 1; /* mark request as delayed */
748	continue;
749	}
750	else
751	{
752	req_invoke (req);
753
754	count++;
755	}
756
757	req_free (req);
758
759	if (maxreqs && !--maxreqs)
760	break;
761
762	if (max_poll_time)
763	{
764	gettimeofday (&tv_now, 0);
765
766	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
767	break;
768	}
769	}
770
771	if (nreqs <= max_outstanding)
772	break;	417	croak (0);
773
774	poll_wait ();
775
776	++maxreqs;
777	}	418	}
778		419	while (max_outstanding && max_outstanding <= eio_nreqs ());
779	return count;
780	}
781
782	static void create_pipe ()
783	{
784	if (pipe (respipe))
785	croak ("unable to initialize result pipe");
786
787	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
788	croak ("cannot set result pipe to nonblocking mode");
789
790	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
791	croak ("cannot set result pipe to nonblocking mode");
792	}
793
794	/*****************************************************************************/
795	/* work around various missing functions */
796
797	#if !HAVE_PREADWRITE
798	# define pread aio_pread
799	# define pwrite aio_pwrite
800
801	/*
802	* make our pread/pwrite safe against themselves, but not against
803	* normal read/write by using a mutex. slows down execution a lot,
804	* but that's your problem, not mine.
805	*/
806	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
807
808	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
809	{
810	ssize_t res;
811	off_t ooffset;
812
813	LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);
816	res = read (fd, buf, count);
817	lseek (fd, ooffset, SEEK_SET);
818	UNLOCK (preadwritelock);
819		420
820	return res;	421	return res;
821	}	422	}
822		423
823	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
824	{
825	ssize_t res;
826	off_t ooffset;
827
828	LOCK (preadwritelock);
829	ooffset = lseek (fd, 0, SEEK_CUR);
830	lseek (fd, offset, SEEK_SET);
831	res = write (fd, buf, count);
832	lseek (fd, offset, SEEK_SET);
833	UNLOCK (preadwritelock);
834
835	return res;
836	}
837	#endif
838
839	#if !HAVE_FDATASYNC
840	# define fdatasync fsync
841	#endif
842
843	#if !HAVE_READAHEAD
844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
845
846	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
847	{
848	dBUF;
849
850	while (count > 0)
851	{
852	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
853
854	pread (fd, aio_buf, len, offset);
855	offset += len;
856	count -= len;
857	}
858
859	errno = 0;
860	}
861
862	#endif
863
864	#if !HAVE_READDIR_R
865	# define readdir_r aio_readdir_r
866
867	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
868
869	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
870	{
871	struct dirent *e;
872	int errorno;
873
874	LOCK (readdirlock);
875
876	e = readdir (dirp);
877	errorno = errno;
878
879	if (e)
880	{
881	*res = ent;
882	strcpy (ent->d_name, e->d_name);
883	}
884	else
885	*res = 0;
886
887	UNLOCK (readdirlock);
888
889	errno = errorno;
890	return e ? 0 : -1;
891	}
892	#endif
893
894	/* sendfile always needs emulation */
895	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
896	{
897	ssize_t res;
898
899	if (!count)
900	return 0;
901
902	#if HAVE_SENDFILE
903	# if __linux
904	res = sendfile (ofd, ifd, &offset, count);
905
906	# elif __freebsd
907	/*
908	* Of course, the freebsd sendfile is a dire hack with no thoughts
909	* wasted on making it similar to other I/O functions.
910	*/
911	{
912	off_t sbytes;
913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
914
915	if (res < 0 && sbytes)
916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
917	res = sbytes;
918	}
919
920	# elif __hpux
921	res = sendfile (ofd, ifd, offset, count, 0, 0);
922
923	# elif __solaris
924	{
925	struct sendfilevec vec;
926	size_t sbytes;
927
928	vec.sfv_fd = ifd;
929	vec.sfv_flag = 0;
930	vec.sfv_off = offset;
931	vec.sfv_len = count;
932
933	res = sendfilev (ofd, &vec, 1, &sbytes);
934
935	if (res < 0 && sbytes)
936	res = sbytes;
937	}
938
939	# endif
940	#else
941	res = -1;
942	errno = ENOSYS;
943	#endif
944
945	if (res < 0
946	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
947	#if __solaris
948	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
949	#endif
950	)
951	)
952	{
953	/* emulate sendfile. this is a major pain in the ass */
954	dBUF;
955
956	res = 0;
957
958	while (count)
959	{
960	ssize_t cnt;
961
962	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
963
964	if (cnt <= 0)
965	{
966	if (cnt && !res) res = -1;
967	break;
968	}
969
970	cnt = write (ofd, aio_buf, cnt);
971
972	if (cnt <= 0)
973	{
974	if (cnt && !res) res = -1;
975	break;
976	}
977
978	offset += cnt;
979	res += cnt;
980	count -= cnt;
981	}
982	}
983
984	return res;
985	}
986
987	/* read a full directory */
988	static void scandir_ (aio_req req, worker *self)
989	{
990	DIR *dirp;
991	union
992	{
993	struct dirent d;
994	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
995	} *u;
996	struct dirent *entp;
997	char *name, *names;
998	int memlen = 4096;
999	int memofs = 0;
1000	int res = 0;
1001	int errorno;
1002
1003	LOCK (wrklock);
1004	self->dirp = dirp = opendir (req->ptr1);
1005	self->dbuf = u = malloc (sizeof (*u));
1006	req->flags |= FLAG_PTR2_FREE;
1007	req->ptr2 = names = malloc (memlen);
1008	UNLOCK (wrklock);
1009
1010	if (dirp && u && names)
1011	for (;;)
1012	{
1013	errno = 0;
1014	readdir_r (dirp, &u->d, &entp);
1015
1016	if (!entp)
1017	break;
1018
1019	name = entp->d_name;
1020
1021	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1022	{
1023	int len = strlen (name) + 1;
1024
1025	res++;
1026
1027	while (memofs + len > memlen)
1028	{
1029	memlen *= 2;
1030	LOCK (wrklock);
1031	req->ptr2 = names = realloc (names, memlen);
1032	UNLOCK (wrklock);
1033
1034	if (!names)
1035	break;
1036	}
1037
1038	memcpy (names + memofs, name, len);
1039	memofs += len;
1040	}
1041	}
1042
1043	if (errno)
1044	res = -1;
1045
1046	req->result = res;
1047	}
1048
1049	/*****************************************************************************/
1050
1051	static void *aio_proc (void *thr_arg)
1052	{
1053	aio_req req;
1054	struct timespec ts;
1055	worker *self = (worker *)thr_arg;
1056
1057	/* try to distribute timeouts somewhat evenly */
1058	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1059	* (1000000000UL / 1024UL);
1060
1061	for (;;)
1062	{
1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1064
1065	LOCK (reqlock);
1066
1067	for (;;)
1068	{
1069	self->req = req = reqq_shift (&req_queue);
1070
1071	if (req)
1072	break;
1073
1074	++idle;
1075
1076	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1077	== ETIMEDOUT)
1078	{
1079	if (idle > max_idle)
1080	{
1081	--idle;
1082	UNLOCK (reqlock);
1083	LOCK (wrklock);
1084	--started;
1085	UNLOCK (wrklock);
1086	goto quit;
1087	}
1088
1089	/* we are allowed to idle, so do so without any timeout */
1090	pthread_cond_wait (&reqwait, &reqlock);
1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1092	}
1093
1094	--idle;
1095	}
1096
1097	--nready;
1098
1099	UNLOCK (reqlock);
1100
1101	errno = 0; /* strictly unnecessary */
1102
1103	if (!(req->flags & FLAG_CANCELLED))
1104	switch (req->type)
1105	{
1106	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1107	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1108
1109	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1110	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1111
1112	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1113	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1115
1116	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1117	case REQ_CLOSE: req->result = close (req->int1); break;
1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1122	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1123	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1124	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1125
1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
1128	case REQ_READDIR: scandir_ (req, self); break;
1129
1130	case REQ_BUSY:
1131	{
1132	struct timeval tv;
1133
1134	tv.tv_sec = req->int1;
1135	tv.tv_usec = req->int2;
1136
1137	req->result = select (0, 0, 0, 0, &tv);
1138	}
1139
1140	case REQ_GROUP:
1141	case REQ_NOP:
1142	break;
1143
1144	case REQ_QUIT:
1145	goto quit;
1146
1147	default:
1148	req->result = ENOSYS;
1149	break;
1150	}
1151
1152	req->errorno = errno;
1153
1154	LOCK (reslock);
1155
1156	++npending;
1157
1158	if (!reqq_push (&res_queue, req))
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	self->req = 0;
1163	worker_clear (self);
1164
1165	UNLOCK (reslock);
1166	}
1167
1168	quit:
1169	LOCK (wrklock);
1170	worker_free (self);
1171	UNLOCK (wrklock);
1172
1173	return 0;
1174	}
1175
1176	/*****************************************************************************/
1177
1178	static void atfork_prepare (void)
1179	{
1180	LOCK (wrklock);
1181	LOCK (reqlock);
1182	LOCK (reslock);
1183	#if !HAVE_PREADWRITE
1184	LOCK (preadwritelock);
1185	#endif
1186	#if !HAVE_READDIR_R
1187	LOCK (readdirlock);
1188	#endif
1189	}
1190
1191	static void atfork_parent (void)
1192	{
1193	#if !HAVE_READDIR_R
1194	UNLOCK (readdirlock);
1195	#endif
1196	#if !HAVE_PREADWRITE
1197	UNLOCK (preadwritelock);
1198	#endif
1199	UNLOCK (reslock);
1200	UNLOCK (reqlock);
1201	UNLOCK (wrklock);
1202	}
1203
1204	static void atfork_child (void)	424	static void atfork_child (void)
1205	{	425	{
1206	aio_req prv;
1207
1208	while (prv = reqq_shift (&req_queue))
1209	req_free (prv);
1210
1211	while (prv = reqq_shift (&res_queue))
1212	req_free (prv);
1213
1214	while (wrk_first.next != &wrk_first)
1215	{
1216	worker *wrk = wrk_first.next;
1217
1218	if (wrk->req)
1219	req_free (wrk->req);
1220
1221	worker_clear (wrk);
1222	worker_free (wrk);
1223	}
1224
1225	started = 0;
1226	idle = 0;
1227	nreqs = 0;
1228	nready = 0;
1229	npending = 0;
1230
1231	close (respipe [0]);
1232	close (respipe [1]);
1233	create_pipe ();	426	create_respipe ();
1234
1235	atfork_parent ();
1236	}	427	}
1237		428
1238	#define dREQ \	429	#define dREQ \
1239	aio_req req; \	430	aio_req req; \
1240	int req_pri = next_pri; \	431	int req_pri = next_pri; \
1241	next_pri = DEFAULT_PRI + PRI_BIAS; \	432	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1242	\	433	\
1243	if (SvOK (callback) && !SvROK (callback)) \	434	if (SvOK (callback) && !SvROK (callback)) \
1244	croak ("callback must be undef or of reference type"); \	435	croak ("callback must be undef or of reference type"); \
1245	\	436	\
1246	Newz (0, req, 1, aio_cb); \	437	Newz (0, req, 1, eio_req); \
1247	if (!req) \	438	if (!req) \
1248	croak ("out of memory during aio_req allocation"); \	439	croak ("out of memory during eio_req allocation"); \
1249	\	440	\
1250	req->callback = newSVsv (callback); \	441	req->callback = newSVsv (callback); \
1251	req->pri = req_pri	442	req->pri = req_pri
1252		443
1253	#define REQ_SEND \	444	#define REQ_SEND \
1254	req_send (req); \	445	eio_submit (req); \
1255	\	446	\
1256	if (GIMME_V != G_VOID) \	447	if (GIMME_V != G_VOID) \
1257	XPUSHs (req_sv (req, AIO_REQ_KLASS));	448	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1258		449
1259	MODULE = IO::AIO PACKAGE = IO::AIO	450	MODULE = IO::AIO PACKAGE = IO::AIO
1260		451
1261	PROTOTYPES: ENABLE	452	PROTOTYPES: ENABLE
1262		453
1263	BOOT:	454	BOOT:
1264	{	455	{
1265	HV *stash = gv_stashpv ("IO::AIO", 1);	456	stash = gv_stashpv ("IO::AIO", 1);
1266		457
1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	458	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	459	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1269	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	460	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1270	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	461	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1271	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	462	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		463	#ifdef _WIN32
		464	X_MUTEX_CHECK (wrklock);
		465	X_MUTEX_CHECK (reslock);
		466	X_MUTEX_CHECK (reqlock);
		467	X_MUTEX_CHECK (reqwait);
		468	X_MUTEX_CHECK (preadwritelock);
		469	X_MUTEX_CHECK (readdirlock);
		470
		471	X_COND_CHECK (reqwait);
		472	#else
1272	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	473	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		474	#endif
1273		475
1274	create_pipe ();	476	create_respipe ();
1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	477
		478	if (eio_init (want_poll, done_poll) < 0)
		479	croak ("IO::AIO: unable to initialise eio library");
		480
		481	/* atfork child called in fifo order, so before eio's handler */
		482	X_THREAD_ATFORK (0, 0, atfork_child);
1276	}	483	}
1277		484
1278	void	485	void
1279	max_poll_reqs (int nreqs)	486	max_poll_reqs (int nreqs)
1280	PROTOTYPE: $	487	PROTOTYPE: $
1281	CODE:	488	CODE:
1282	max_poll_reqs = nreqs;	489	eio_set_max_poll_reqs (nreqs);
1283		490
1284	void	491	void
1285	max_poll_time (double nseconds)	492	max_poll_time (double nseconds)
1286	PROTOTYPE: $	493	PROTOTYPE: $
1287	CODE:	494	CODE:
1288	max_poll_time = nseconds * AIO_TICKS;	495	eio_set_max_poll_time (nseconds);
1289		496
1290	void	497	void
1291	min_parallel (int nthreads)	498	min_parallel (int nthreads)
1292	PROTOTYPE: $	499	PROTOTYPE: $
		500	CODE:
		501	eio_set_min_parallel (nthreads);
1293		502
1294	void	503	void
1295	max_parallel (int nthreads)	504	max_parallel (int nthreads)
1296	PROTOTYPE: $	505	PROTOTYPE: $
		506	CODE:
		507	eio_set_max_parallel (nthreads);
1297		508
1298	void	509	void
1299	max_idle (int nthreads)	510	max_idle (int nthreads)
1300	PROTOTYPE: $	511	PROTOTYPE: $
1301	CODE:	512	CODE:
1302	set_max_idle (nthreads);	513	eio_set_max_idle (nthreads);
1303		514
1304	int	515	void
1305	max_outstanding (int maxreqs)	516	max_outstanding (int maxreqs)
1306	PROTOTYPE: $	517	PROTOTYPE: $
1307	CODE:	518	CODE:
1308	RETVAL = max_outstanding;
1309	max_outstanding = maxreqs;	519	max_outstanding = maxreqs;
1310	OUTPUT:
1311	RETVAL
1312		520
1313	void	521	void
1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	522	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1315	SV8 * pathname
1316	int flags
1317	int mode
1318	SV * callback
1319	PROTOTYPE: $$$;$	523	PROTOTYPE: $$$;$
1320	PPCODE:	524	PPCODE:
1321	{	525	{
1322	dREQ;	526	dREQ;
1323		527
1324	req->type = REQ_OPEN;	528	req->type = EIO_OPEN;
1325	req->sv1 = newSVsv (pathname);	529	req->sv1 = newSVsv (pathname);
1326	req->ptr1 = SvPVbyte_nolen (req->sv1);	530	req->ptr1 = SvPVbyte_nolen (req->sv1);
1327	req->int1 = flags;	531	req->int1 = flags;
1328	req->mode = mode;	532	req->int2 = mode;
1329		533
1330	REQ_SEND;	534	REQ_SEND;
1331	}	535	}
1332		536
1333	void	537	void
1334	aio_close (fh,callback=&PL_sv_undef)	538	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1335	SV * fh
1336	SV * callback
1337	PROTOTYPE: $;$	539	PROTOTYPE: $;$
1338	ALIAS:	540	ALIAS:
1339	aio_close = REQ_CLOSE
1340	aio_fsync = REQ_FSYNC	541	aio_fsync = EIO_FSYNC
1341	aio_fdatasync = REQ_FDATASYNC	542	aio_fdatasync = EIO_FDATASYNC
1342	PPCODE:	543	PPCODE:
1343	{	544	{
1344	dREQ;	545	dREQ;
1345		546
1346	req->type = ix;	547	req->type = ix;
1347	req->fh = newSVsv (fh);	548	req->sv1 = newSVsv (fh);
1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	549	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1349		550
1350	REQ_SEND (req);	551	REQ_SEND (req);
1351	}	552	}
1352		553
1353	void	554	void
		555	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		556	PROTOTYPE: $;$
		557	PPCODE:
		558	{
		559	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		560	dREQ;
		561
		562	if (close_pipe < 0)
		563	{
		564	int pipefd [2];
		565
		566	if (pipe (pipefd) < 0
		567	|| close (pipefd [1]) < 0
		568	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		569	abort (); /*D*/
		570
		571	close_pipe = pipefd [0];
		572	}
		573
		574	req->type = EIO_DUP2;
		575	req->int1 = close_pipe;
		576	req->sv2 = newSVsv (fh);
		577	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		578
		579	REQ_SEND (req);
		580	}
		581
		582	void
1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	583	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1355	SV * fh
1356	UV offset
1357	UV length
1358	SV8 * data
1359	UV dataoffset
1360	SV * callback
1361	ALIAS:	584	ALIAS:
1362	aio_read = REQ_READ	585	aio_read = EIO_READ
1363	aio_write = REQ_WRITE	586	aio_write = EIO_WRITE
1364	PROTOTYPE: $$$$$;$	587	PROTOTYPE: $$$$$;$
1365	PPCODE:	588	PPCODE:
1366	{	589	{
1367	STRLEN svlen;	590	STRLEN svlen;
1368	char *svptr = SvPVbyte (data, svlen);	591	char *svptr = SvPVbyte (data, svlen);
		592	UV len = SvUV (length);
1369		593
1370	SvUPGRADE (data, SVt_PV);	594	SvUPGRADE (data, SVt_PV);
1371	SvPOK_on (data);	595	SvPOK_on (data);
1372		596
1373	if (dataoffset < 0)	597	if (dataoffset < 0)
1374	dataoffset += svlen;	598	dataoffset += svlen;
1375		599
1376	if (dataoffset < 0 || dataoffset > svlen)	600	if (dataoffset < 0 || dataoffset > svlen)
1377	croak ("data offset outside of string");	601	croak ("dataoffset outside of data scalar");
1378		602
1379	if (ix == REQ_WRITE)	603	if (ix == EIO_WRITE)
1380	{	604	{
1381	/* write: check length and adjust. */	605	/* write: check length and adjust. */
1382	if (length < 0 || length + dataoffset > svlen)	606	if (!SvOK (length) || len + dataoffset > svlen)
1383	length = svlen - dataoffset;	607	len = svlen - dataoffset;
1384	}	608	}
1385	else	609	else
1386	{	610	{
1387	/* read: grow scalar as necessary */	611	/* read: grow scalar as necessary */
1388	svptr = SvGROW (data, length + dataoffset);	612	svptr = SvGROW (data, len + dataoffset + 1);
1389	}	613	}
1390		614
1391	if (length < 0)	615	if (len < 0)
1392	croak ("length must not be negative");	616	croak ("length must not be negative");
1393		617
1394	{	618	{
1395	dREQ;	619	dREQ;
1396		620
1397	req->type = ix;	621	req->type = ix;
1398	req->fh = newSVsv (fh);	622	req->sv1 = newSVsv (fh);
1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	623	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1400	: IoOFP (sv_2io (fh)));	624	: IoOFP (sv_2io (fh)));
1401	req->offs = offset;	625	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->size = length;	626	req->size = len;
1403	req->sv1 = SvREFCNT_inc (data);	627	req->sv2 = SvREFCNT_inc (data);
1404	req->ptr1 = (char *)svptr + dataoffset;	628	req->ptr2 = (char *)svptr + dataoffset;
1405	req->stroffset = dataoffset;	629	req->stroffset = dataoffset;
1406		630
1407	if (!SvREADONLY (data))	631	if (!SvREADONLY (data))
1408	{	632	{
1409	SvREADONLY_on (data);	633	SvREADONLY_on (data);
1410	req->flags |= FLAG_SV1_RO_OFF;	634	req->flags |= FLAG_SV2_RO_OFF;
1411	}	635	}
1412		636
1413	REQ_SEND;	637	REQ_SEND;
1414	}	638	}
1415	}	639	}
1416		640
1417	void	641	void
1418	aio_readlink (path,callback=&PL_sv_undef)	642	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1419	SV8 * path
1420	SV * callback
1421	PROTOTYPE: $$;$	643	PROTOTYPE: $$;$
1422	PPCODE:	644	PPCODE:
1423	{	645	{
1424	SV *data;	646	SV *data;
1425	dREQ;	647	dREQ;
1426		648
1427	data = newSV (NAME_MAX);	649	data = newSV (NAME_MAX);
1428	SvPOK_on (data);	650	SvPOK_on (data);
1429		651
1430	req->type = REQ_READLINK;	652	req->type = EIO_READLINK;
1431	req->fh = newSVsv (path);	653	req->sv1 = newSVsv (path);
1432	req->ptr2 = SvPVbyte_nolen (req->fh);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1433	req->sv1 = data;	655	req->sv2 = data;
1434	req->ptr1 = SvPVbyte_nolen (data);	656	req->ptr2 = SvPVbyte_nolen (data);
1435		657
1436	REQ_SEND;	658	REQ_SEND;
1437	}	659	}
1438		660
1439	void	661	void
1440	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	662	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1441	SV * out_fh
1442	SV * in_fh
1443	UV in_offset
1444	UV length
1445	SV * callback
1446	PROTOTYPE: $$$$;$	663	PROTOTYPE: $$$$;$
1447	PPCODE:	664	PPCODE:
1448	{	665	{
1449	dREQ;	666	dREQ;
1450		667
1451	req->type = REQ_SENDFILE;	668	req->type = EIO_SENDFILE;
1452	req->fh = newSVsv (out_fh);	669	req->sv1 = newSVsv (out_fh);
1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	670	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1454	req->sv2 = newSVsv (in_fh);	671	req->sv2 = newSVsv (in_fh);
1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	672	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1456	req->offs = in_offset;	673	req->offs = SvVAL64 (in_offset);
1457	req->size = length;	674	req->size = length;
1458		675
1459	REQ_SEND;	676	REQ_SEND;
1460	}	677	}
1461		678
1462	void	679	void
1463	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	680	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1464	SV * fh
1465	UV offset
1466	IV length
1467	SV * callback
1468	PROTOTYPE: $$$;$	681	PROTOTYPE: $$$;$
1469	PPCODE:	682	PPCODE:
1470	{	683	{
1471	dREQ;	684	dREQ;
1472		685
1473	req->type = REQ_READAHEAD;	686	req->type = EIO_READAHEAD;
1474	req->fh = newSVsv (fh);	687	req->sv1 = newSVsv (fh);
1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1476	req->offs = offset;	689	req->offs = SvVAL64 (offset);
1477	req->size = length;	690	req->size = length;
1478		691
1479	REQ_SEND;	692	REQ_SEND;
1480	}	693	}
1481		694
1482	void	695	void
1483	aio_stat (fh_or_path,callback=&PL_sv_undef)	696	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1484	SV8 * fh_or_path
1485	SV * callback
1486	ALIAS:	697	ALIAS:
1487	aio_stat = REQ_STAT	698	aio_stat = EIO_STAT
1488	aio_lstat = REQ_LSTAT	699	aio_lstat = EIO_LSTAT
1489	PPCODE:	700	PPCODE:
1490	{	701	{
1491	dREQ;	702	dREQ;
1492		703
1493	req->ptr2 = malloc (sizeof (Stat_t));	704	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1494	if (!req->ptr2)	705	if (!req->ptr2)
1495	{	706	{
1496	req_free (req);	707	req_destroy (req);
1497	croak ("out of memory during aio_stat statdata allocation");	708	croak ("out of memory during aio_stat statdata allocation");
1498	}	709	}
1499		710
1500	req->flags |= FLAG_PTR2_FREE;	711	req->flags |= EIO_FLAG_PTR2_FREE;
		712	req->sv1 = newSVsv (fh_or_path);
1501		713
1502	if (SvPOK (fh_or_path))	714	if (SvPOK (fh_or_path))
1503	{	715	{
1504	req->type = ix;	716	req->type = ix;
1505	req->sv1 = newSVsv (fh_or_path);
1506	req->ptr1 = SvPVbyte_nolen (req->sv1);	717	req->ptr1 = SvPVbyte_nolen (req->sv1);
1507	}	718	}
1508	else	719	else
1509	{	720	{
1510	req->type = REQ_FSTAT;	721	req->type = EIO_FSTAT;
1511	req->fh = newSVsv (fh_or_path);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	722	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1513	}	723	}
1514		724
1515	REQ_SEND;	725	REQ_SEND;
1516	}	726	}
1517		727
1518	void	728	void
		729	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		730	PPCODE:
		731	{
		732	dREQ;
		733
		734	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		735	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		736	req->sv1 = newSVsv (fh_or_path);
		737
		738	if (SvPOK (fh_or_path))
		739	{
		740	req->type = EIO_UTIME;
		741	req->ptr1 = SvPVbyte_nolen (req->sv1);
		742	}
		743	else
		744	{
		745	req->type = EIO_FUTIME;
		746	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		747	}
		748
		749	REQ_SEND;
		750	}
		751
		752	void
		753	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		754	PPCODE:
		755	{
		756	dREQ;
		757
		758	req->sv1 = newSVsv (fh_or_path);
		759	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		760
		761	if (SvPOK (fh_or_path))
		762	{
		763	req->type = EIO_TRUNCATE;
		764	req->ptr1 = SvPVbyte_nolen (req->sv1);
		765	}
		766	else
		767	{
		768	req->type = EIO_FTRUNCATE;
		769	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		770	}
		771
		772	REQ_SEND;
		773	}
		774
		775	void
		776	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		777	ALIAS:
		778	aio_chmod = EIO_CHMOD
		779	aio_fchmod = EIO_FCHMOD
		780	aio_mkdir = EIO_MKDIR
		781	PPCODE:
		782	{
		783	dREQ;
		784
		785	req->type = ix;
		786	req->int2 = mode;
		787	req->sv1 = newSVsv (fh_or_path);
		788
		789	if (ix == EIO_FCHMOD)
		790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		791	else
		792	req->ptr1 = SvPVbyte_nolen (req->sv1);
		793
		794	REQ_SEND;
		795	}
		796
		797	void
		798	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		799	PPCODE:
		800	{
		801	dREQ;
		802
		803	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		804	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		805	req->sv1 = newSVsv (fh_or_path);
		806
		807	if (SvPOK (fh_or_path))
		808	{
		809	req->type = EIO_CHOWN;
		810	req->ptr1 = SvPVbyte_nolen (req->sv1);
		811	}
		812	else
		813	{
		814	req->type = EIO_FCHOWN;
		815	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		816	}
		817
		818	REQ_SEND;
		819	}
		820
		821	void
1519	aio_unlink (pathname,callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1520	SV8 * pathname
1521	SV * callback
1522	ALIAS:	823	ALIAS:
1523	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1524	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1525	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1526	PPCODE:	827	PPCODE:
1527	{	828	{
1528	dREQ;	829	dREQ;
1529		830
1530	req->type = ix;	831	req->type = ix;
…		…
1533		834
1534	REQ_SEND;	835	REQ_SEND;
1535	}	836	}
1536		837
1537	void	838	void
1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)	839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1539	SV8 * oldpath
1540	SV8 * newpath
1541	SV * callback
1542	ALIAS:	840	ALIAS:
1543	aio_link = REQ_LINK	841	aio_link = EIO_LINK
1544	aio_symlink = REQ_SYMLINK	842	aio_symlink = EIO_SYMLINK
1545	aio_rename = REQ_RENAME	843	aio_rename = EIO_RENAME
1546	PPCODE:	844	PPCODE:
1547	{	845	{
1548	dREQ;	846	dREQ;
1549		847
1550	req->type = ix;	848	req->type = ix;
1551	req->fh = newSVsv (oldpath);	849	req->sv1 = newSVsv (oldpath);
1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1553	req->sv1 = newSVsv (newpath);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);	850	req->ptr1 = SvPVbyte_nolen (req->sv1);
		851	req->sv2 = newSVsv (newpath);
		852	req->ptr2 = SvPVbyte_nolen (req->sv2);
1555		853
1556	REQ_SEND;	854	REQ_SEND;
1557	}	855	}
1558		856
1559	void	857	void
1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	858	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1561	SV8 * pathname
1562	SV * callback
1563	UV mode
1564	UV dev
1565	PPCODE:	859	PPCODE:
1566	{	860	{
1567	dREQ;	861	dREQ;
1568		862
1569	req->type = REQ_MKNOD;	863	req->type = EIO_MKNOD;
1570	req->sv1 = newSVsv (pathname);	864	req->sv1 = newSVsv (pathname);
1571	req->ptr1 = SvPVbyte_nolen (req->sv1);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1572	req->mode = (mode_t)mode;	866	req->int2 = (mode_t)mode;
1573	req->offs = dev;	867	req->offs = dev;
1574		868
1575	REQ_SEND;	869	REQ_SEND;
1576	}	870	}
1577		871
1578	void	872	void
1579	aio_busy (delay,callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1580	double delay
1581	SV * callback
1582	PPCODE:	874	PPCODE:
1583	{	875	{
1584	dREQ;	876	dREQ;
1585		877
1586	req->type = REQ_BUSY;	878	req->type = EIO_BUSY;
1587	req->int1 = delay < 0. ? 0 : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1589		880
1590	REQ_SEND;	881	REQ_SEND;
1591	}	882	}
1592		883
1593	void	884	void
1594	aio_group (callback=&PL_sv_undef)	885	aio_group (SV *callback=&PL_sv_undef)
1595	SV * callback
1596	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1597	PPCODE:	887	PPCODE:
1598	{	888	{
1599	dREQ;	889	dREQ;
1600		890
1601	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
1602		892
1603	req_send (req);	893	eio_submit (req);
1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1605	}	895	}
1606		896
1607	void	897	void
1608	aio_nop (callback=&PL_sv_undef)	898	aio_nop (SV *callback=&PL_sv_undef)
1609	SV * callback	899	ALIAS:
		900	aio_nop = EIO_NOP
		901	aio_sync = EIO_SYNC
1610	PPCODE:	902	PPCODE:
1611	{	903	{
1612	dREQ;	904	dREQ;
1613		905
1614	req->type = REQ_NOP;	906	req->type = ix;
1615		907
1616	REQ_SEND;	908	REQ_SEND;
1617	}	909	}
1618		910
1619	int	911	int
1620	aioreq_pri (int pri = 0)	912	aioreq_pri (int pri = 0)
1621	PROTOTYPE: ;$	913	PROTOTYPE: ;$
1622	CODE:	914	CODE:
1623	RETVAL = next_pri - PRI_BIAS;	915	RETVAL = next_pri - EIO_PRI_BIAS;
1624	if (items > 0)	916	if (items > 0)
1625	{	917	{
1626	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1627	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1628	next_pri = pri + PRI_BIAS;	920	next_pri = pri + EIO_PRI_BIAS;
1629	}	921	}
1630	OUTPUT:	922	OUTPUT:
1631	RETVAL	923	RETVAL
1632		924
1633	void	925	void
1634	aioreq_nice (int nice = 0)	926	aioreq_nice (int nice = 0)
1635	CODE:	927	CODE:
1636	nice = next_pri - nice;	928	nice = next_pri - nice;
1637	if (nice < PRI_MIN) nice = PRI_MIN;	929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1638	if (nice > PRI_MAX) nice = PRI_MAX;	930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1639	next_pri = nice + PRI_BIAS;	931	next_pri = nice + EIO_PRI_BIAS;
1640		932
1641	void	933	void
1642	flush ()	934	flush ()
1643	PROTOTYPE:	935	PROTOTYPE:
1644	CODE:	936	CODE:
1645	while (nreqs)	937	while (eio_nreqs ())
1646	{	938	{
1647	poll_wait ();	939	poll_wait ();
1648	poll_cb ();	940	poll_cb ();
1649	}	941	}
1650		942
…		…
1681		973
1682	int	974	int
1683	nreqs()	975	nreqs()
1684	PROTOTYPE:	976	PROTOTYPE:
1685	CODE:	977	CODE:
1686	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
1687	OUTPUT:	979	OUTPUT:
1688	RETVAL	980	RETVAL
1689		981
1690	int	982	int
1691	nready()	983	nready()
1692	PROTOTYPE:	984	PROTOTYPE:
1693	CODE:	985	CODE:
1694	RETVAL = get_nready ();	986	RETVAL = eio_nready ();
1695	OUTPUT:	987	OUTPUT:
1696	RETVAL	988	RETVAL
1697		989
1698	int	990	int
1699	npending()	991	npending()
1700	PROTOTYPE:	992	PROTOTYPE:
1701	CODE:	993	CODE:
1702	RETVAL = get_npending ();	994	RETVAL = eio_npending ();
1703	OUTPUT:	995	OUTPUT:
1704	RETVAL	996	RETVAL
1705		997
1706	int	998	int
1707	nthreads()	999	nthreads()
1708	PROTOTYPE:	1000	PROTOTYPE:
1709	CODE:	1001	CODE:
1710	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1002	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1711	RETVAL = started;	1003	RETVAL = started;
1712	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	1004	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1713	OUTPUT:	1005	OUTPUT:
1714	RETVAL	1006	RETVAL
1715		1007
1716	PROTOTYPES: DISABLE	1008	PROTOTYPES: DISABLE
1717		1009
1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1010	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1719		1011
1720	void	1012	void
1721	cancel (aio_req_ornot req)	1013	cancel (aio_req_ornot req)
1722	CODE:	1014	CODE:
1723	req_cancel (req);	1015	eio_cancel (req);
1724		1016
1725	void	1017	void
1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1018	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1727	CODE:	1019	CODE:
1728	SvREFCNT_dec (req->callback);	1020	SvREFCNT_dec (req->callback);
…		…
1733	void	1025	void
1734	add (aio_req grp, ...)	1026	add (aio_req grp, ...)
1735	PPCODE:	1027	PPCODE:
1736	{	1028	{
1737	int i;	1029	int i;
1738	aio_req req;
1739		1030
1740	if (grp->int1 == 2)	1031	if (grp->int1 == 2)
1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1032	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1742		1033
1743	for (i = 1; i < items; ++i )	1034	for (i = 1; i < items; ++i )
1744	{	1035	{
		1036	aio_req req;
		1037
1745	if (GIMME_V != G_VOID)	1038	if (GIMME_V != G_VOID)
1746	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1039	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1747		1040
1748	req = SvAIO_REQ (ST (i));	1041	req = SvAIO_REQ (ST (i));
1749		1042
1750	if (req)	1043	if (req)
1751	{	1044	eio_grp_add (grp, req);
1752	++grp->size;
1753	req->grp = grp;
1754
1755	req->grp_prev = 0;
1756	req->grp_next = grp->grp_first;
1757
1758	if (grp->grp_first)
1759	grp->grp_first->grp_prev = req;
1760
1761	grp->grp_first = req;
1762	}
1763	}	1045	}
1764	}	1046	}
1765		1047
1766	void	1048	void
1767	cancel_subs (aio_req_ornot req)	1049	cancel_subs (aio_req_ornot req)
…		…
1792	grp->errorno = errorno;	1074	grp->errorno = errorno;
1793		1075
1794	void	1076	void
1795	limit (aio_req grp, int limit)	1077	limit (aio_req grp, int limit)
1796	CODE:	1078	CODE:
1797	grp->int2 = limit;	1079	eio_grp_limit (grp, limit);
1798	aio_grp_feed (grp);
1799		1080
1800	void	1081	void
1801	feed (aio_req grp, SV *callback=&PL_sv_undef)	1082	feed (aio_req grp, SV *callback=&PL_sv_undef)
1802	CODE:	1083	CODE:
1803	{	1084	{
…		…
1805	grp->sv2 = newSVsv (callback);	1086	grp->sv2 = newSVsv (callback);
1806		1087
1807	if (grp->int2 <= 0)	1088	if (grp->int2 <= 0)
1808	grp->int2 = 2;	1089	grp->int2 = 2;
1809		1090
1810	aio_grp_feed (grp);	1091	eio_grp_limit (grp, grp->int2);
1811	}	1092	}
1812		1093

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