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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.90 by root, Tue Oct 31 00:32:19 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 = SvREFCNT_inc (POPs);	229	symlen = snprintf (
		230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
		235	);
453		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
454	PUSHMARK (SP);	241	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	242	}
457	break;	243	break;
458		244
459	case REQ_GROUP:	245	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
461		247
462	if (req->sv1)	248	if (req->sv1)
463	{	249	{
464	int i;	250	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
470	}	256	}
471	break;	257	break;
472		258
473	case REQ_NOP:	259	case EIO_NOP:
474	case REQ_BUSY:	260	case EIO_BUSY:
475	break;	261	break;
476		262
477	case REQ_READLINK:	263	case EIO_READLINK:
478	if (req->result > 0)	264	if (req->result > 0)
479	{	265	{
480	SvCUR_set (req->sv1, req->result);	266	SvCUR_set (req->sv2, req->result);
481	*SvEND (req->sv1) = 0;	267	*SvEND (req->sv2) = 0;
482	PUSHs (req->sv1);	268	PUSHs (req->sv2);
483	}	269	}
484	break;	270	break;
485		271
486	case REQ_STAT:	272	case EIO_STAT:
487	case REQ_LSTAT:	273	case EIO_LSTAT:
488	case REQ_FSTAT:	274	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
490	PL_laststatval = req->result;	276	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);	277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	278	PUSHs (sv_2mortal (newSViv (req->result)));
493	break;	279	break;
494		280
495	case REQ_READ:	281	case EIO_READ:
496	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));
497	*SvEND (req->sv1) = 0;	283	*SvEND (req->sv2) = 0;
498	PUSHs (sv_2mortal (newSViv (req->result)));	284	PUSHs (sv_2mortal (newSViv (req->result)));
499	break;	285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
500		291
501	default:	292	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
503	break;	294	break;
504	}	295	}
505		296
506	errno = req->errorno;	297	errno = req->errorno;
507		298
508	PUTBACK;	299	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	SPAGAIN;	301	SPAGAIN;
511		302
512	FREETMPS;	303	FREETMPS;
513	LEAVE;	304	LEAVE;
		305
		306	PUTBACK;
514	}	307	}
515		308
516	if (req->grp)	309	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	}	310	}
536		311
537	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
538	{	313	{
539	if (req->self)	314	if (req->self)
540	{	315	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
543	}	318	}
544		319
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	320	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	321	SvREFCNT_dec (req->sv2);
548	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
549		323
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	324	Safefree (req);
554	}	325	}
555		326
556	static void req_cancel_subs (aio_req grp)	327	static void req_cancel_subs (aio_req grp)
557	{	328	{
558	aio_req sub;	329	aio_req sub;
559		330
560	if (grp->type != REQ_GROUP)	331	if (grp->type != EIO_GROUP)
561	return;	332	return;
562		333
563	SvREFCNT_dec (grp->sv2);	334	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	335	grp->sv2 = 0;
565		336
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	337	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	338	}
569		339
570	static void req_cancel (aio_req req)	340	#ifdef USE_SOCKETS_AS_HANDLES
571	{	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
572	req->flags |= FLAG_CANCELLED;	342	#else
573		343	# 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	344	#endif
595		345
596	sigfillset (&fullsigset);	346	static void
		347	create_respipe (void)
		348	{
		349	int old_readfd = respipe [0];
597		350
598	LOCK (wrklock);	351	if (respipe [1] >= 0)
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	352	respipe_close (TO_SOCKET (respipe [1]));
600		353
601	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)
602	{	362	{
603	wrk->prev = &wrk_first;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
604	wrk->next = wrk_first.next;	364	croak ("unable to initialize result pipe(2)");
605	wrk_first.next->prev = wrk;	365
606	wrk_first.next = wrk;	366	respipe_close (respipe [0]);
607	++started;	367	respipe [0] = old_readfd;
608	}	368	}
609	else
610	free (wrk);
611		369
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);	370	#ifdef _WIN32
613	UNLOCK (wrklock);	371	int arg = 1;
614	}	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)");
615		379
616	static void maybe_start_thread ()	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
617	{	381	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	}	382	}
627		383
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 ()	384	static void poll_wait (void)
683	{	385	{
684	fd_set rfd;	386	fd_set rfd;
685		387
686	while (nreqs)	388	while (eio_nreqs ())
687	{	389	{
688	int size;	390	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	391
		392	X_LOCK (reslock);
690	size = res_queue.size;	393	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	394	X_UNLOCK (reslock);
692		395
693	if (size)	396	if (size)
694	return;	397	return;
695		398
696	maybe_start_thread ();	399	maybe_start_thread ();
697		400
698	FD_ZERO(&rfd);	401	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	402	FD_SET (respipe [0], &rfd);
700		403
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	405	}
703	}	406	}
704		407
705	static int poll_cb ()	408	static int poll_cb (void)
706	{	409	{
707	dSP;	410	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		411
714	if (max_poll_time)	412	do
715	gettimeofday (&tv_start, 0);
716
717	for (;;)
718	{	413	{
719	for (;;)	414	res = eio_poll ();
720	{
721	maybe_start_thread ();
722		415
723	LOCK (reslock);	416	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;	417	croak (0);
774
775	poll_wait ();
776
777	++maxreqs;
778	}	418	}
779		419	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		420
821	return res;	421	return res;
822	}	422	}
823		423
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)	424	static void atfork_child (void)
1206	{	425	{
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 ();	426	create_respipe ();
1235
1236	atfork_parent ();
1237	}	427	}
1238		428
1239	#define dREQ \	429	#define dREQ \
1240	aio_req req; \	430	aio_req req; \
1241	int req_pri = next_pri; \	431	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \	432	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1243	\	433	\
1244	if (SvOK (callback) && !SvROK (callback)) \	434	if (SvOK (callback) && !SvROK (callback)) \
1245	croak ("callback must be undef or of reference type"); \	435	croak ("callback must be undef or of reference type"); \
1246	\	436	\
1247	Newz (0, req, 1, aio_cb); \	437	Newz (0, req, 1, eio_req); \
1248	if (!req) \	438	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \	439	croak ("out of memory during eio_req allocation"); \
1250	\	440	\
1251	req->callback = newSVsv (callback); \	441	req->callback = newSVsv (callback); \
1252	req->pri = req_pri	442	req->pri = req_pri
1253		443
1254	#define REQ_SEND \	444	#define REQ_SEND \
1255	req_send (req); \	445	eio_submit (req); \
1256	\	446	\
1257	if (GIMME_V != G_VOID) \	447	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));	448	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259		449
1260	MODULE = IO::AIO PACKAGE = IO::AIO	450	MODULE = IO::AIO PACKAGE = IO::AIO
1261		451
1262	PROTOTYPES: ENABLE	452	PROTOTYPES: ENABLE
1263		453
1264	BOOT:	454	BOOT:
1265	{	455	{
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	456	stash = gv_stashpv ("IO::AIO", 1);
1267		457
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	458	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	459	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	460	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	461	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	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
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	473	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		474	#endif
1274		475
1275	create_pipe ();	476	create_respipe ();
1276	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);
1277	}	483	}
1278		484
1279	void	485	void
1280	max_poll_reqs (int nreqs)	486	max_poll_reqs (int nreqs)
1281	PROTOTYPE: $	487	PROTOTYPE: $
1282	CODE:	488	CODE:
1283	max_poll_reqs = nreqs;	489	eio_set_max_poll_reqs (nreqs);
1284		490
1285	void	491	void
1286	max_poll_time (double nseconds)	492	max_poll_time (double nseconds)
1287	PROTOTYPE: $	493	PROTOTYPE: $
1288	CODE:	494	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	495	eio_set_max_poll_time (nseconds);
1290		496
1291	void	497	void
1292	min_parallel (int nthreads)	498	min_parallel (int nthreads)
1293	PROTOTYPE: $	499	PROTOTYPE: $
		500	CODE:
		501	eio_set_min_parallel (nthreads);
1294		502
1295	void	503	void
1296	max_parallel (int nthreads)	504	max_parallel (int nthreads)
1297	PROTOTYPE: $	505	PROTOTYPE: $
		506	CODE:
		507	eio_set_max_parallel (nthreads);
1298		508
1299	void	509	void
1300	max_idle (int nthreads)	510	max_idle (int nthreads)
1301	PROTOTYPE: $	511	PROTOTYPE: $
1302	CODE:	512	CODE:
1303	set_max_idle (nthreads);	513	eio_set_max_idle (nthreads);
1304		514
1305	int	515	void
1306	max_outstanding (int maxreqs)	516	max_outstanding (int maxreqs)
1307	PROTOTYPE: $	517	PROTOTYPE: $
1308	CODE:	518	CODE:
1309	RETVAL = max_outstanding;
1310	max_outstanding = maxreqs;	519	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		520
1314	void	521	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	522	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: $$$;$	523	PROTOTYPE: $$$;$
1321	PPCODE:	524	PPCODE:
1322	{	525	{
1323	dREQ;	526	dREQ;
1324		527
1325	req->type = REQ_OPEN;	528	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	529	req->sv1 = newSVsv (pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);	530	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	531	req->int1 = flags;
1329	req->mode = mode;	532	req->int2 = mode;
1330		533
1331	REQ_SEND;	534	REQ_SEND;
1332	}	535	}
1333		536
1334	void	537	void
1335	aio_close (fh,callback=&PL_sv_undef)	538	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$	539	PROTOTYPE: $;$
1339	ALIAS:	540	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	541	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	542	aio_fdatasync = EIO_FDATASYNC
1343	PPCODE:	543	PPCODE:
1344	{	544	{
1345	dREQ;	545	dREQ;
1346		546
1347	req->type = ix;	547	req->type = ix;
1348	req->fh = newSVsv (fh);	548	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	549	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1350		550
1351	REQ_SEND (req);	551	REQ_SEND (req);
1352	}	552	}
1353		553
1354	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
1355	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)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	584	ALIAS:
1363	aio_read = REQ_READ	585	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	586	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$	587	PROTOTYPE: $$$$$;$
1366	PPCODE:	588	PPCODE:
1367	{	589	{
1368	STRLEN svlen;	590	STRLEN svlen;
1369	char *svptr = SvPVbyte (data, svlen);	591	char *svptr = SvPVbyte (data, svlen);
		592	UV len = SvUV (length);
1370		593
1371	SvUPGRADE (data, SVt_PV);	594	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);	595	SvPOK_on (data);
1373		596
1374	if (dataoffset < 0)	597	if (dataoffset < 0)
1375	dataoffset += svlen;	598	dataoffset += svlen;
1376		599
1377	if (dataoffset < 0 || dataoffset > svlen)	600	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	601	croak ("dataoffset outside of data scalar");
1379		602
1380	if (ix == REQ_WRITE)	603	if (ix == EIO_WRITE)
1381	{	604	{
1382	/* write: check length and adjust. */	605	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	606	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	607	len = svlen - dataoffset;
1385	}	608	}
1386	else	609	else
1387	{	610	{
1388	/* read: grow scalar as necessary */	611	/* read: grow scalar as necessary */
1389	svptr = SvGROW (data, length + dataoffset);	612	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	613	}
1391		614
1392	if (length < 0)	615	if (len < 0)
1393	croak ("length must not be negative");	616	croak ("length must not be negative");
1394		617
1395	{	618	{
1396	dREQ;	619	dREQ;
1397		620
1398	req->type = ix;	621	req->type = ix;
1399	req->fh = newSVsv (fh);	622	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	623	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1401	: IoOFP (sv_2io (fh)));	624	: IoOFP (sv_2io (fh)));
1402	req->offs = offset;	625	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1403	req->size = length;	626	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	627	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	628	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	629	req->stroffset = dataoffset;
1407		630
1408	if (!SvREADONLY (data))	631	if (!SvREADONLY (data))
1409	{	632	{
1410	SvREADONLY_on (data);	633	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	634	req->flags |= FLAG_SV2_RO_OFF;
1412	}	635	}
1413		636
1414	REQ_SEND;	637	REQ_SEND;
1415	}	638	}
1416	}	639	}
1417		640
1418	void	641	void
1419	aio_readlink (path,callback=&PL_sv_undef)	642	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1420	SV8 * path
1421	SV * callback
1422	PROTOTYPE: $$;$	643	PROTOTYPE: $$;$
1423	PPCODE:	644	PPCODE:
1424	{	645	{
1425	SV *data;	646	SV *data;
1426	dREQ;	647	dREQ;
1427		648
1428	data = newSV (NAME_MAX);	649	data = newSV (NAME_MAX);
1429	SvPOK_on (data);	650	SvPOK_on (data);
1430		651
1431	req->type = REQ_READLINK;	652	req->type = EIO_READLINK;
1432	req->fh = newSVsv (path);	653	req->sv1 = newSVsv (path);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);	654	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->sv1 = data;	655	req->sv2 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);	656	req->ptr2 = SvPVbyte_nolen (data);
1436		657
1437	REQ_SEND;	658	REQ_SEND;
1438	}	659	}
1439		660
1440	void	661	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	662	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$	663	PROTOTYPE: $$$$;$
1448	PPCODE:	664	PPCODE:
1449	{	665	{
1450	dREQ;	666	dREQ;
1451		667
1452	req->type = REQ_SENDFILE;	668	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	669	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	670	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1455	req->sv2 = newSVsv (in_fh);	671	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	672	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1457	req->offs = in_offset;	673	req->offs = SvVAL64 (in_offset);
1458	req->size = length;	674	req->size = length;
1459		675
1460	REQ_SEND;	676	REQ_SEND;
1461	}	677	}
1462		678
1463	void	679	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	680	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$	681	PROTOTYPE: $$$;$
1470	PPCODE:	682	PPCODE:
1471	{	683	{
1472	dREQ;	684	dREQ;
1473		685
1474	req->type = REQ_READAHEAD;	686	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	687	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1477	req->offs = offset;	689	req->offs = SvVAL64 (offset);
1478	req->size = length;	690	req->size = length;
1479		691
1480	REQ_SEND;	692	REQ_SEND;
1481	}	693	}
1482		694
1483	void	695	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	696	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	697	ALIAS:
1488	aio_stat = REQ_STAT	698	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	699	aio_lstat = EIO_LSTAT
1490	PPCODE:	700	PPCODE:
1491	{	701	{
1492	dREQ;	702	dREQ;
1493		703
1494	req->ptr2 = malloc (sizeof (Stat_t));	704	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1495	if (!req->ptr2)	705	if (!req->ptr2)
1496	{	706	{
1497	req_free (req);	707	req_destroy (req);
1498	croak ("out of memory during aio_stat statdata allocation");	708	croak ("out of memory during aio_stat statdata allocation");
1499	}	709	}
1500		710
1501	req->flags |= FLAG_PTR2_FREE;	711	req->flags |= EIO_FLAG_PTR2_FREE;
		712	req->sv1 = newSVsv (fh_or_path);
1502		713
1503	if (SvPOK (fh_or_path))	714	if (SvPOK (fh_or_path))
1504	{	715	{
1505	req->type = ix;	716	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);	717	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}	718	}
1509	else	719	else
1510	{	720	{
1511	req->type = REQ_FSTAT;	721	req->type = EIO_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	722	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}	723	}
1515		724
1516	REQ_SEND;	725	REQ_SEND;
1517	}	726	}
1518		727
1519	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
1520	aio_unlink (pathname,callback=&PL_sv_undef)	822	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	823	ALIAS:
1524	aio_unlink = REQ_UNLINK	824	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	825	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	826	aio_readdir = EIO_READDIR
1527	PPCODE:	827	PPCODE:
1528	{	828	{
1529	dREQ;	829	dREQ;
1530		830
1531	req->type = ix;	831	req->type = ix;
…		…
1534		834
1535	REQ_SEND;	835	REQ_SEND;
1536	}	836	}
1537		837
1538	void	838	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	839	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	840	ALIAS:
1544	aio_link = REQ_LINK	841	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	842	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	843	aio_rename = EIO_RENAME
1547	PPCODE:	844	PPCODE:
1548	{	845	{
1549	dREQ;	846	dREQ;
1550		847
1551	req->type = ix;	848	req->type = ix;
1552	req->fh = newSVsv (oldpath);	849	req->sv1 = newSVsv (oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1554	req->sv1 = newSVsv (newpath);
1555	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);
1556		853
1557	REQ_SEND;	854	REQ_SEND;
1558	}	855	}
1559		856
1560	void	857	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	858	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:	859	PPCODE:
1567	{	860	{
1568	dREQ;	861	dREQ;
1569		862
1570	req->type = REQ_MKNOD;	863	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);	864	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	866	req->int2 = (mode_t)mode;
1574	req->offs = dev;	867	req->offs = dev;
1575		868
1576	REQ_SEND;	869	REQ_SEND;
1577	}	870	}
1578		871
1579	void	872	void
1580	aio_busy (delay,callback=&PL_sv_undef)	873	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	874	PPCODE:
1584	{	875	{
1585	dREQ;	876	dREQ;
1586		877
1587	req->type = REQ_BUSY;	878	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	879	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		880
1591	REQ_SEND;	881	REQ_SEND;
1592	}	882	}
1593		883
1594	void	884	void
1595	aio_group (callback=&PL_sv_undef)	885	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$	886	PROTOTYPE: ;$
1598	PPCODE:	887	PPCODE:
1599	{	888	{
1600	dREQ;	889	dREQ;
1601		890
1602	req->type = REQ_GROUP;	891	req->type = EIO_GROUP;
1603		892
1604	req_send (req);	893	eio_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	894	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1606	}	895	}
1607		896
1608	void	897	void
1609	aio_nop (callback=&PL_sv_undef)	898	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	899	ALIAS:
		900	aio_nop = EIO_NOP
		901	aio_sync = EIO_SYNC
1611	PPCODE:	902	PPCODE:
1612	{	903	{
1613	dREQ;	904	dREQ;
1614		905
1615	req->type = REQ_NOP;	906	req->type = ix;
1616		907
1617	REQ_SEND;	908	REQ_SEND;
1618	}	909	}
1619		910
1620	int	911	int
1621	aioreq_pri (int pri = 0)	912	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$	913	PROTOTYPE: ;$
1623	CODE:	914	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	915	RETVAL = next_pri - EIO_PRI_BIAS;
1625	if (items > 0)	916	if (items > 0)
1626	{	917	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	918	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	919	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	920	next_pri = pri + EIO_PRI_BIAS;
1630	}	921	}
1631	OUTPUT:	922	OUTPUT:
1632	RETVAL	923	RETVAL
1633		924
1634	void	925	void
1635	aioreq_nice (int nice = 0)	926	aioreq_nice (int nice = 0)
1636	CODE:	927	CODE:
1637	nice = next_pri - nice;	928	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	929	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	930	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	931	next_pri = nice + EIO_PRI_BIAS;
1641		932
1642	void	933	void
1643	flush ()	934	flush ()
1644	PROTOTYPE:	935	PROTOTYPE:
1645	CODE:	936	CODE:
1646	while (nreqs)	937	while (eio_nreqs ())
1647	{	938	{
1648	poll_wait ();	939	poll_wait ();
1649	poll_cb (0);	940	poll_cb ();
1650	}	941	}
1651		942
1652	void	943	int
1653	poll()	944	poll()
1654	PROTOTYPE:	945	PROTOTYPE:
1655	CODE:	946	CODE:
1656	if (nreqs)
1657	{
1658	poll_wait ();	947	poll_wait ();
1659	poll_cb (0);	948	RETVAL = poll_cb ();
1660	}	949	OUTPUT:
		950	RETVAL
1661		951
1662	int	952	int
1663	poll_fileno()	953	poll_fileno()
1664	PROTOTYPE:	954	PROTOTYPE:
1665	CODE:	955	CODE:
…		…
1677		967
1678	void	968	void
1679	poll_wait()	969	poll_wait()
1680	PROTOTYPE:	970	PROTOTYPE:
1681	CODE:	971	CODE:
1682	if (nreqs)
1683	poll_wait ();	972	poll_wait ();
1684		973
1685	int	974	int
1686	nreqs()	975	nreqs()
1687	PROTOTYPE:	976	PROTOTYPE:
1688	CODE:	977	CODE:
1689	RETVAL = nreqs;	978	RETVAL = eio_nreqs ();
1690	OUTPUT:	979	OUTPUT:
1691	RETVAL	980	RETVAL
1692		981
1693	int	982	int
1694	nready()	983	nready()
1695	PROTOTYPE:	984	PROTOTYPE:
1696	CODE:	985	CODE:
1697	RETVAL = get_nready ();	986	RETVAL = eio_nready ();
1698	OUTPUT:	987	OUTPUT:
1699	RETVAL	988	RETVAL
1700		989
1701	int	990	int
1702	npending()	991	npending()
1703	PROTOTYPE:	992	PROTOTYPE:
1704	CODE:	993	CODE:
1705	RETVAL = get_npending ();	994	RETVAL = eio_npending ();
1706	OUTPUT:	995	OUTPUT:
1707	RETVAL	996	RETVAL
1708		997
1709	int	998	int
1710	nthreads()	999	nthreads()
1711	PROTOTYPE:	1000	PROTOTYPE:
1712	CODE:	1001	CODE:
1713	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1002	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1714	RETVAL = started;	1003	RETVAL = started;
1715	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	1004	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1716	OUTPUT:	1005	OUTPUT:
1717	RETVAL	1006	RETVAL
1718		1007
1719	PROTOTYPES: DISABLE	1008	PROTOTYPES: DISABLE
1720		1009
1721	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1010	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1722		1011
1723	void	1012	void
1724	cancel (aio_req_ornot req)	1013	cancel (aio_req_ornot req)
1725	CODE:	1014	CODE:
1726	req_cancel (req);	1015	eio_cancel (req);
1727		1016
1728	void	1017	void
1729	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1018	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1730	CODE:	1019	CODE:
1731	SvREFCNT_dec (req->callback);	1020	SvREFCNT_dec (req->callback);
…		…
1736	void	1025	void
1737	add (aio_req grp, ...)	1026	add (aio_req grp, ...)
1738	PPCODE:	1027	PPCODE:
1739	{	1028	{
1740	int i;	1029	int i;
1741	aio_req req;
1742		1030
1743	if (grp->int1 == 2)	1031	if (grp->int1 == 2)
1744	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");
1745		1033
1746	for (i = 1; i < items; ++i )	1034	for (i = 1; i < items; ++i )
1747	{	1035	{
		1036	aio_req req;
		1037
1748	if (GIMME_V != G_VOID)	1038	if (GIMME_V != G_VOID)
1749	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1039	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1750		1040
1751	req = SvAIO_REQ (ST (i));	1041	req = SvAIO_REQ (ST (i));
1752		1042
1753	if (req)	1043	if (req)
1754	{	1044	eio_grp_add (grp, req);
1755	++grp->size;
1756	req->grp = grp;
1757
1758	req->grp_prev = 0;
1759	req->grp_next = grp->grp_first;
1760
1761	if (grp->grp_first)
1762	grp->grp_first->grp_prev = req;
1763
1764	grp->grp_first = req;
1765	}
1766	}	1045	}
1767	}	1046	}
1768		1047
1769	void	1048	void
1770	cancel_subs (aio_req_ornot req)	1049	cancel_subs (aio_req_ornot req)
…		…
1795	grp->errorno = errorno;	1074	grp->errorno = errorno;
1796		1075
1797	void	1076	void
1798	limit (aio_req grp, int limit)	1077	limit (aio_req grp, int limit)
1799	CODE:	1078	CODE:
1800	grp->int2 = limit;	1079	eio_grp_limit (grp, limit);
1801	aio_grp_feed (grp);
1802		1080
1803	void	1081	void
1804	feed (aio_req grp, SV *callback=&PL_sv_undef)	1082	feed (aio_req grp, SV *callback=&PL_sv_undef)
1805	CODE:	1083	CODE:
1806	{	1084	{
…		…
1808	grp->sv2 = newSVsv (callback);	1086	grp->sv2 = newSVsv (callback);
1809		1087
1810	if (grp->int2 <= 0)	1088	if (grp->int2 <= 0)
1811	grp->int2 = 2;	1089	grp->int2 = 2;
1812		1090
1813	aio_grp_feed (grp);	1091	eio_grp_limit (grp, grp->int2);
1814	}	1092	}
1815		1093

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