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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.115 by root, Sat May 10 18:06:41 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 */	77	typedef SV SV8; /* byte-sv, used for argument-checking */
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	enum {
93	REQ_QUIT,
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};
105		78
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		81
109	typedef struct aio_cb	82	#define EIO_COMMON \
110	{
111	struct aio_cb *volatile next;
112
113	SV *callback, *fh;	83	SV *callback; \
114	SV *sv1, *sv2;	84	SV *sv1, *sv2; \
115	void *ptr1, *ptr2;
116	Stat_t *statdata;
117	off_t offs;
118	size_t size;
119	ssize_t result;
120
121	STRLEN stroffset;	85	STRLEN stroffset; \
122	int type;	86	SV *self
123	int int1, int2;
124	int errorno;
125	mode_t mode; /* open */
126		87
127	unsigned char flags;	88	#include "libeio/eio.h"
128	unsigned char pri;
129		89
130	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
132	} 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)
133		96
134	enum {	97	enum {
135	FLAG_CANCELLED = 0x01,
136	FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
137	};	99	};
138		100
		101	#include "libeio/eio.c"
		102
139	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
140	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
141		105
142	enum {	106	static unsigned int max_outstanding = 0x7fffffff;
143	PRI_MIN = -4,
144	PRI_MAX = 4,
145		107
146	DEFAULT_PRI = 0,
147	PRI_BIAS = -PRI_MIN,
148	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
149	};
150
151	#define AIO_TICKS ((1000000 + 1023) >> 10)
152
153	static unsigned int max_poll_time = 0;
154	static unsigned int max_poll_reqs = 0;
155
156	/* calculcate time difference in ~1/AIO_TICKS of a second */
157	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
158	{
159	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
161	}
162
163	static int next_pri = DEFAULT_PRI + PRI_BIAS;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
164		109
165	static unsigned int started, idle, wanted;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
166		111
167	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169	#else
170	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171	#endif
172
173	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176	/* worker threads management */
177	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
178
179	typedef struct worker {
180	/* locked by wrklock */
181	struct worker *prev, *next;
182
183	pthread_t tid;
184
185	/* locked by reslock, reqlock or wrklock */
186	aio_req req; /* currently processed request */
187	void *dbuf;
188	DIR *dirp;
189	} worker;
190
191	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
192
193	static void worker_clear (worker *wrk)
194	{
195	if (wrk->dirp)
196	{
197	closedir (wrk->dirp);
198	wrk->dirp = 0;
199	}
200
201	if (wrk->dbuf)
202	{
203	free (wrk->dbuf);
204	wrk->dbuf = 0;
205	}
206	}
207
208	static void worker_free (worker *wrk)
209	{
210	wrk->next->prev = wrk->prev;
211	wrk->prev->next = wrk->next;
212
213	free (wrk);
214	}
215
216	static volatile unsigned int nreqs, nready, npending;
217	static volatile unsigned int max_idle = 4;
218	static volatile unsigned int max_outstanding = 0xffffffff;
219	static int respipe [2];
220
221	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
222	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
223	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
224
225	#if WORDACCESS_UNSAFE
226
227	static unsigned int get_nready ()
228	{
229	unsigned int retval;
230
231	LOCK (reqlock);
232	retval = nready;
233	UNLOCK (reqlock);
234
235	return retval;
236	}
237
238	static unsigned int get_npending ()
239	{
240	unsigned int retval;
241
242	LOCK (reslock);
243	retval = npending;
244	UNLOCK (reslock);
245
246	return retval;
247	}
248
249	static unsigned int get_nthreads ()
250	{
251	unsigned int retval;
252
253	LOCK (wrklock);
254	retval = started;
255	UNLOCK (wrklock);
256
257	return retval;
258	}
259
260	#else
261
262	# define get_nready() nready
263	# define get_npending() npending
264	# define get_nthreads() started
265
266	#endif
267
268	/*
269	* a somewhat faster data structure might be nice, but
270	* with 8 priorities this actually needs <20 insns
271	* per shift, the most expensive operation.
272	*/
273	typedef struct {
274	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
275	int size;
276	} reqq;
277
278	static reqq req_queue;
279	static reqq res_queue;
280
281	int reqq_push (reqq *q, aio_req req)
282	{
283	int pri = req->pri;
284	req->next = 0;
285
286	if (q->qe[pri])
287	{
288	q->qe[pri]->next = req;
289	q->qe[pri] = req;
290	}
291	else
292	q->qe[pri] = q->qs[pri] = req;
293
294	return q->size++;
295	}
296
297	aio_req reqq_shift (reqq *q)
298	{
299	int pri;
300
301	if (!q->size)
302	return 0;
303
304	--q->size;
305
306	for (pri = NUM_PRI; pri--; )
307	{
308	aio_req req = q->qs[pri];
309
310	if (req)
311	{
312	if (!(q->qs[pri] = req->next))
313	q->qe[pri] = 0;
314
315	return req;
316	}
317	}
318
319	abort ();
320	}
321
322	static int poll_cb ();
323	static void req_invoke (aio_req req);
324	static void req_free (aio_req req);	112	static void req_destroy (aio_req req);
325	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	}
326		128
327	/* must be called at most once */	129	/* must be called at most once */
328	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
329	{	131	{
330	if (!req->self)	132	if (!req->self)
…		…
348	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
349	}	151	}
350		152
351	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
352	{	154	{
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	155	if (grp->sv2 && SvOK (grp->sv2))
354	{	156	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	157	dSP;
360		158
361	ENTER;	159	ENTER;
362	SAVETMPS;	160	SAVETMPS;
363	PUSHMARK (SP);	161	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
365	PUTBACK;	163	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	165	SPAGAIN;
368	FREETMPS;	166	FREETMPS;
369	LEAVE;	167	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	168	}
380	}	169	}
381		170
382	static void aio_grp_dec (aio_req grp)
383	{
384	--grp->size;
385
386	/* call feeder, if applicable */
387	aio_grp_feed (grp);
388
389	/* finish, if done */
390	if (!grp->size && grp->int1)
391	{
392	req_invoke (grp);
393	req_free (grp);
394	}
395	}
396
397	static void req_invoke (aio_req req)	171	static int req_invoke (eio_req *req)
398	{	172	{
399	dSP;	173	dSP;
400		174
401	if (req->flags & FLAG_DATA_RO_OFF)	175	if (req->flags & FLAG_SV2_RO_OFF)
402	SvREADONLY_off (req->sv1);	176	SvREADONLY_off (req->sv2);
403		177
404	if (req->statdata)
405	{
406	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
407	PL_laststatval = req->result;
408	PL_statcache = *(req->statdata);
409	}
410
411	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
412	{	179	{
413	ENTER;	180	ENTER;
414	SAVETMPS;	181	SAVETMPS;
415	PUSHMARK (SP);	182	PUSHMARK (SP);
416	EXTEND (SP, 1);	183	EXTEND (SP, 1);
417		184
418	switch (req->type)	185	switch (req->type)
419	{	186	{
420	case REQ_READDIR:	187	case EIO_READDIR:
421	{	188	{
422	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
423		190
424	if (req->result >= 0)	191	if (req->result >= 0)
425	{	192	{
…		…
442		209
443	PUSHs (rv);	210	PUSHs (rv);
444	}	211	}
445	break;	212	break;
446		213
447	case REQ_OPEN:	214	case EIO_OPEN:
448	{	215	{
449	/* convert fd to fh */	216	/* convert fd to fh */
450	SV *fh;	217	SV *fh = &PL_sv_undef;
451		218
452	PUSHs (sv_2mortal (newSViv (req->result)));	219	if (req->result >= 0)
453	PUTBACK;	220	{
454	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	221	GV *gv = (GV *)sv_newmortal ();
455	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);
456		228
457	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	);
458		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
459	PUSHMARK (SP);	241	PUSHs (fh);
460	XPUSHs (sv_2mortal (fh));
461	}	242	}
462	break;	243	break;
463		244
464	case REQ_GROUP:	245	case EIO_GROUP:
465	req->int1 = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
466		247
467	if (req->sv1)	248	if (req->sv1)
468	{	249	{
469	int i;	250	int i;
…		…
473	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
474	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
475	}	256	}
476	break;	257	break;
477		258
478	case REQ_NOP:	259	case EIO_NOP:
479	case REQ_BUSY:	260	case EIO_BUSY:
480	break;	261	break;
481		262
482	case REQ_READLINK:	263	case EIO_READLINK:
483	if (req->result > 0)	264	if (req->result > 0)
484	{	265	{
485	SvCUR_set (req->sv1, req->result);	266	SvCUR_set (req->sv2, req->result);
486	*SvEND (req->sv1) = 0;	267	*SvEND (req->sv2) = 0;
487	PUSHs (req->sv1);	268	PUSHs (req->sv2);
488	}	269	}
489	break;	270	break;
490		271
		272	case EIO_STAT:
		273	case EIO_LSTAT:
		274	case EIO_FSTAT:
		275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		276	PL_laststatval = req->result;
		277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		278	PUSHs (sv_2mortal (newSViv (req->result)));
		279	break;
		280
491	case REQ_READ:	281	case EIO_READ:
492	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));
493	*SvEND (req->sv1) = 0;	283	*SvEND (req->sv2) = 0;
494	/* fall through */	284	PUSHs (sv_2mortal (newSViv (req->result)));
		285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
		291
495	default:	292	default:
496	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
497	break;	294	break;
498	}	295	}
499		296
500	errno = req->errorno;	297	errno = req->errorno;
501		298
502	PUTBACK;	299	PUTBACK;
503	call_sv (req->callback, G_VOID | G_EVAL);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504	SPAGAIN;	301	SPAGAIN;
505		302
506	FREETMPS;	303	FREETMPS;
507	LEAVE;	304	LEAVE;
		305
		306	PUTBACK;
508	}	307	}
509		308
510	if (req->grp)	309	return !!SvTRUE (ERRSV);
511	{
512	aio_req grp = req->grp;
513
514	/* unlink request */
515	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
516	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
517
518	if (grp->grp_first == req)
519	grp->grp_first = req->grp_next;
520
521	aio_grp_dec (grp);
522	}
523
524	if (SvTRUE (ERRSV))
525	{
526	req_free (req);
527	croak (0);
528	}
529	}	310	}
530		311
531	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
532	{	313	{
533	if (req->self)	314	if (req->self)
534	{	315	{
535	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
536	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
537	}	318	}
538		319
539	SvREFCNT_dec (req->fh);
540	SvREFCNT_dec (req->sv1);	320	SvREFCNT_dec (req->sv1);
541	SvREFCNT_dec (req->sv2);	321	SvREFCNT_dec (req->sv2);
542	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
543	Safefree (req->statdata);
544
545	if (req->type == REQ_READDIR)
546	free (req->ptr2);
547		323
548	Safefree (req);	324	Safefree (req);
549	}	325	}
550		326
551	static void req_cancel_subs (aio_req grp)	327	static void req_cancel_subs (aio_req grp)
552	{	328	{
553	aio_req sub;	329	aio_req sub;
554		330
555	if (grp->type != REQ_GROUP)	331	if (grp->type != EIO_GROUP)
556	return;	332	return;
557		333
558	SvREFCNT_dec (grp->sv2);	334	SvREFCNT_dec (grp->sv2);
559	grp->sv2 = 0;	335	grp->sv2 = 0;
560		336
561	for (sub = grp->grp_first; sub; sub = sub->grp_next)	337	eio_grp_cancel (grp);
562	req_cancel (sub);
563	}	338	}
564		339
565	static void req_cancel (aio_req req)	340	#ifdef USE_SOCKETS_AS_HANDLES
566	{	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
567	req->flags |= FLAG_CANCELLED;	342	#else
568		343	# define TO_SOCKET(x) (x)
569	req_cancel_subs (req);
570	}
571
572	static void *aio_proc(void *arg);
573
574	static void start_thread (void)
575	{
576	sigset_t fullsigset, oldsigset;
577	pthread_attr_t attr;
578
579	worker *wrk = calloc (1, sizeof (worker));
580
581	if (!wrk)
582	croak ("unable to allocate worker thread data");
583
584	pthread_attr_init (&attr);
585	pthread_attr_setstacksize (&attr, STACKSIZE);
586	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587	#ifdef PTHREAD_SCOPE_PROCESS
588	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589	#endif	344	#endif
590		345
591	sigfillset (&fullsigset);	346	static void
		347	create_respipe (void)
		348	{
		349	int old_readfd = respipe [0];
592		350
593	LOCK (wrklock);	351	if (respipe [1] >= 0)
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	352	respipe_close (TO_SOCKET (respipe [1]));
595		353
596	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)
597	{	362	{
598	wrk->prev = &wrk_first;	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
599	wrk->next = wrk_first.next;	364	croak ("unable to initialize result pipe(2)");
600	wrk_first.next->prev = wrk;	365
601	wrk_first.next = wrk;	366	respipe_close (respipe [0]);
602	++started;	367	respipe [0] = old_readfd;
603	}	368	}
604	else
605	free (wrk);
606		369
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);	370	#ifdef _WIN32
608	UNLOCK (wrklock);	371	int arg = 1;
609	}	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)");
610		379
611	static void maybe_start_thread ()	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
612	{	381	respipe_osf [1] = TO_SOCKET (respipe [1]);
613	if (get_nthreads () >= wanted)
614	return;
615
616	/* todo: maybe use idle here, but might be less exact */
617	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
618	return;
619
620	start_thread ();
621	}	382	}
622		383
623	static void req_send (aio_req req)
624	{
625	++nreqs;
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632
633	maybe_start_thread ();
634	}
635
636	static void end_thread (void)
637	{
638	aio_req req;
639
640	Newz (0, req, 1, aio_cb);
641
642	req->type = REQ_QUIT;
643	req->pri = PRI_MAX + PRI_BIAS;
644
645	LOCK (reqlock);
646	reqq_push (&req_queue, req);
647	pthread_cond_signal (&reqwait);
648	UNLOCK (reqlock);
649
650	LOCK (wrklock);
651	--started;
652	UNLOCK (wrklock);
653	}
654
655	static void set_max_idle (int nthreads)
656	{
657	if (WORDACCESS_UNSAFE) LOCK (reqlock);
658	max_idle = nthreads <= 0 ? 1 : nthreads;
659	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
660	}
661
662	static void min_parallel (int nthreads)
663	{
664	if (wanted < nthreads)
665	wanted = nthreads;
666	}
667
668	static void max_parallel (int nthreads)
669	{
670	if (wanted > nthreads)
671	wanted = nthreads;
672
673	while (started > wanted)
674	end_thread ();
675	}
676
677	static void poll_wait ()	384	static void poll_wait (void)
678	{	385	{
679	fd_set rfd;	386	fd_set rfd;
680		387
681	while (nreqs)	388	while (eio_nreqs ())
682	{	389	{
683	int size;	390	int size;
684	if (WORDACCESS_UNSAFE) LOCK (reslock);	391
		392	X_LOCK (reslock);
685	size = res_queue.size;	393	size = res_queue.size;
686	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	394	X_UNLOCK (reslock);
687		395
688	if (size)	396	if (size)
689	return;	397	return;
690		398
691	maybe_start_thread ();	399	maybe_start_thread ();
692		400
693	FD_ZERO(&rfd);	401	FD_ZERO (&rfd);
694	FD_SET(respipe [0], &rfd);	402	FD_SET (respipe [0], &rfd);
695		403
696	select (respipe [0] + 1, &rfd, 0, 0, 0);	404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
697	}	405	}
698	}	406	}
699		407
700	static int poll_cb ()	408	static int poll_cb (void)
701	{	409	{
702	dSP;	410	int res = eio_poll ();
703	int count = 0;
704	int maxreqs = max_poll_reqs;
705	int do_croak = 0;
706	struct timeval tv_start, tv_now;
707	aio_req req;
708		411
709	if (max_poll_time)	412	if (res > 0)
710	gettimeofday (&tv_start, 0);	413	croak (0);
711
712	for (;;)
713	{
714	for (;;)
715	{
716	maybe_start_thread ();
717
718	LOCK (reslock);
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [32];
729	while (read (respipe [0], buf, 32) == 32)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	req_invoke (req);
749
750	count++;
751	}
752
753	req_free (req);
754
755	if (maxreqs && !--maxreqs)
756	break;
757
758	if (max_poll_time)
759	{
760	gettimeofday (&tv_now, 0);
761
762	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
763	break;
764	}
765	}
766
767	if (nreqs <= max_outstanding)
768	break;
769
770	poll_wait ();
771
772	++maxreqs;
773	}
774
775	return count;
776	}
777
778	static void create_pipe ()
779	{
780	if (pipe (respipe))
781	croak ("unable to initialize result pipe");
782
783	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784	croak ("cannot set result pipe to nonblocking mode");
785
786	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787	croak ("cannot set result pipe to nonblocking mode");
788	}
789
790	/*****************************************************************************/
791	/* work around various missing functions */
792
793	#if !HAVE_PREADWRITE
794	# define pread aio_pread
795	# define pwrite aio_pwrite
796
797	/*
798	* make our pread/pwrite safe against themselves, but not against
799	* normal read/write by using a mutex. slows down execution a lot,
800	* but that's your problem, not mine.
801	*/
802	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
803
804	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
805	{
806	ssize_t res;
807	off_t ooffset;
808
809	LOCK (preadwritelock);
810	ooffset = lseek (fd, 0, SEEK_CUR);
811	lseek (fd, offset, SEEK_SET);
812	res = read (fd, buf, count);
813	lseek (fd, ooffset, SEEK_SET);
814	UNLOCK (preadwritelock);
815		414
816	return res;	415	return res;
817	}
818
819	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
820	{
821	ssize_t res;
822	off_t ooffset;
823
824	LOCK (preadwritelock);
825	ooffset = lseek (fd, 0, SEEK_CUR);
826	lseek (fd, offset, SEEK_SET);
827	res = write (fd, buf, count);
828	lseek (fd, offset, SEEK_SET);
829	UNLOCK (preadwritelock);
830
831	return res;
832	}
833	#endif
834
835	#if !HAVE_FDATASYNC
836	# define fdatasync fsync
837	#endif
838
839	#if !HAVE_READAHEAD
840	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841
842	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
843	{
844	dBUF;
845
846	while (count > 0)
847	{
848	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
849
850	pread (fd, aio_buf, len, offset);
851	offset += len;
852	count -= len;
853	}
854
855	errno = 0;
856	}
857
858	#endif
859
860	#if !HAVE_READDIR_R
861	# define readdir_r aio_readdir_r
862
863	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
864
865	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
866	{
867	struct dirent *e;
868	int errorno;
869
870	LOCK (readdirlock);
871
872	e = readdir (dirp);
873	errorno = errno;
874
875	if (e)
876	{
877	*res = ent;
878	strcpy (ent->d_name, e->d_name);
879	}
880	else
881	*res = 0;
882
883	UNLOCK (readdirlock);
884
885	errno = errorno;
886	return e ? 0 : -1;
887	}
888	#endif
889
890	/* sendfile always needs emulation */
891	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
892	{
893	ssize_t res;
894
895	if (!count)
896	return 0;
897
898	#if HAVE_SENDFILE
899	# if __linux
900	res = sendfile (ofd, ifd, &offset, count);
901
902	# elif __freebsd
903	/*
904	* Of course, the freebsd sendfile is a dire hack with no thoughts
905	* wasted on making it similar to other I/O functions.
906	*/
907	{
908	off_t sbytes;
909	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
910
911	if (res < 0 && sbytes)
912	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
913	res = sbytes;
914	}
915
916	# elif __hpux
917	res = sendfile (ofd, ifd, offset, count, 0, 0);
918
919	# elif __solaris
920	{
921	struct sendfilevec vec;
922	size_t sbytes;
923
924	vec.sfv_fd = ifd;
925	vec.sfv_flag = 0;
926	vec.sfv_off = offset;
927	vec.sfv_len = count;
928
929	res = sendfilev (ofd, &vec, 1, &sbytes);
930
931	if (res < 0 && sbytes)
932	res = sbytes;
933	}
934
935	# endif
936	#else
937	res = -1;
938	errno = ENOSYS;
939	#endif
940
941	if (res < 0
942	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
943	#if __solaris
944	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
945	#endif
946	)
947	)
948	{
949	/* emulate sendfile. this is a major pain in the ass */
950	dBUF;
951
952	res = 0;
953
954	while (count)
955	{
956	ssize_t cnt;
957
958	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
959
960	if (cnt <= 0)
961	{
962	if (cnt && !res) res = -1;
963	break;
964	}
965
966	cnt = write (ofd, aio_buf, cnt);
967
968	if (cnt <= 0)
969	{
970	if (cnt && !res) res = -1;
971	break;
972	}
973
974	offset += cnt;
975	res += cnt;
976	count -= cnt;
977	}
978	}
979
980	return res;
981	}
982
983	/* read a full directory */
984	static void scandir_ (aio_req req, worker *self)
985	{
986	DIR *dirp;
987	union
988	{
989	struct dirent d;
990	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
991	} *u;
992	struct dirent *entp;
993	char *name, *names;
994	int memlen = 4096;
995	int memofs = 0;
996	int res = 0;
997	int errorno;
998
999	LOCK (wrklock);
1000	self->dirp = dirp = opendir (req->ptr1);
1001	self->dbuf = u = malloc (sizeof (*u));
1002	req->ptr2 = names = malloc (memlen);
1003	UNLOCK (wrklock);
1004
1005	if (dirp && u && names)
1006	for (;;)
1007	{
1008	errno = 0;
1009	readdir_r (dirp, &u->d, &entp);
1010
1011	if (!entp)
1012	break;
1013
1014	name = entp->d_name;
1015
1016	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1017	{
1018	int len = strlen (name) + 1;
1019
1020	res++;
1021
1022	while (memofs + len > memlen)
1023	{
1024	memlen *= 2;
1025	LOCK (wrklock);
1026	req->ptr2 = names = realloc (names, memlen);
1027	UNLOCK (wrklock);
1028
1029	if (!names)
1030	break;
1031	}
1032
1033	memcpy (names + memofs, name, len);
1034	memofs += len;
1035	}
1036	}
1037
1038	if (errno)
1039	res = -1;
1040
1041	req->result = res;
1042	}
1043
1044	/*****************************************************************************/
1045
1046	static void *aio_proc (void *thr_arg)
1047	{
1048	aio_req req;
1049	struct timespec ts;
1050	worker *self = (worker *)thr_arg;
1051
1052	/* try to distribute timeouts somewhat evenly */
1053	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1054	* (1000000000UL / 1024UL);
1055
1056	for (;;)
1057	{
1058	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059
1060	LOCK (reqlock);
1061
1062	for (;;)
1063	{
1064	self->req = req = reqq_shift (&req_queue);
1065
1066	if (req)
1067	break;
1068
1069	++idle;
1070
1071	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1072	== ETIMEDOUT)
1073	{
1074	if (idle > max_idle)
1075	{
1076	--idle;
1077	UNLOCK (reqlock);
1078	LOCK (wrklock);
1079	--started;
1080	UNLOCK (wrklock);
1081	goto quit;
1082	}
1083
1084	/* we are allowed to idle, so do so without any timeout */
1085	pthread_cond_wait (&reqwait, &reqlock);
1086	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087	}
1088
1089	--idle;
1090	}
1091
1092	--nready;
1093
1094	UNLOCK (reqlock);
1095
1096	errno = 0; /* strictly unnecessary */
1097
1098	if (!(req->flags & FLAG_CANCELLED))
1099	switch (req->type)
1100	{
1101	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1102	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1103
1104	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1105	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1106
1107	case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;
1108	case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;
1109	case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;
1110
1111	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1112	case REQ_CLOSE: req->result = close (req->int1); break;
1113	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1115	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1119	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1120
1121	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122	case REQ_FSYNC: req->result = fsync (req->int1); break;
1123	case REQ_READDIR: scandir_ (req, self); break;
1124
1125	case REQ_BUSY:
1126	{
1127	struct timeval tv;
1128
1129	tv.tv_sec = req->int1;
1130	tv.tv_usec = req->int2;
1131
1132	req->result = select (0, 0, 0, 0, &tv);
1133	}
1134
1135	case REQ_GROUP:
1136	case REQ_NOP:
1137	break;
1138
1139	case REQ_QUIT:
1140	goto quit;
1141
1142	default:
1143	req->result = ENOSYS;
1144	break;
1145	}
1146
1147	req->errorno = errno;
1148
1149	LOCK (reslock);
1150
1151	++npending;
1152
1153	if (!reqq_push (&res_queue, req))
1154	/* write a dummy byte to the pipe so fh becomes ready */
1155	write (respipe [1], &respipe, 1);
1156
1157	self->req = 0;
1158	worker_clear (self);
1159
1160	UNLOCK (reslock);
1161	}
1162
1163	quit:
1164	LOCK (wrklock);
1165	worker_free (self);
1166	UNLOCK (wrklock);
1167
1168	return 0;
1169	}
1170
1171	/*****************************************************************************/
1172
1173	static void atfork_prepare (void)
1174	{
1175	LOCK (wrklock);
1176	LOCK (reqlock);
1177	LOCK (reslock);
1178	#if !HAVE_PREADWRITE
1179	LOCK (preadwritelock);
1180	#endif
1181	#if !HAVE_READDIR_R
1182	LOCK (readdirlock);
1183	#endif
1184	}
1185
1186	static void atfork_parent (void)
1187	{
1188	#if !HAVE_READDIR_R
1189	UNLOCK (readdirlock);
1190	#endif
1191	#if !HAVE_PREADWRITE
1192	UNLOCK (preadwritelock);
1193	#endif
1194	UNLOCK (reslock);
1195	UNLOCK (reqlock);
1196	UNLOCK (wrklock);
1197	}
1198
1199	static void atfork_child (void)
1200	{
1201	aio_req prv;
1202
1203	while (prv = reqq_shift (&req_queue))
1204	req_free (prv);
1205
1206	while (prv = reqq_shift (&res_queue))
1207	req_free (prv);
1208
1209	while (wrk_first.next != &wrk_first)
1210	{
1211	worker *wrk = wrk_first.next;
1212
1213	if (wrk->req)
1214	req_free (wrk->req);
1215
1216	worker_clear (wrk);
1217	worker_free (wrk);
1218	}
1219
1220	started = 0;
1221	idle = 0;
1222	nreqs = 0;
1223	nready = 0;
1224	npending = 0;
1225
1226	close (respipe [0]);
1227	close (respipe [1]);
1228	create_pipe ();
1229
1230	atfork_parent ();
1231	}	416	}
1232		417
1233	#define dREQ \	418	#define dREQ \
1234	aio_req req; \	419	aio_req req; \
1235	int req_pri = next_pri; \	420	int req_pri = next_pri; \
1236	next_pri = DEFAULT_PRI + PRI_BIAS; \	421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1237	\	422	\
1238	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
1239	croak ("callback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
1240	\	425	\
1241	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
1242	if (!req) \	427	if (!req) \
1243	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
1244	\	429	\
1245	req->callback = newSVsv (callback); \	430	req->callback = newSVsv (callback); \
1246	req->pri = req_pri	431	req->pri = req_pri
1247		432
1248	#define REQ_SEND \	433	#define REQ_SEND \
1249	req_send (req); \	434	eio_submit (req); \
1250	\	435	\
1251	if (GIMME_V != G_VOID) \	436	if (GIMME_V != G_VOID) \
1252	XPUSHs (req_sv (req, AIO_REQ_KLASS));	437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1253		438
1254	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
1255		440
1256	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
1257		442
1258	BOOT:	443	BOOT:
1259	{	444	{
1260	HV *stash = gv_stashpv ("IO::AIO", 1);	445	stash = gv_stashpv ("IO::AIO", 1);
1261		446
1262	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1263	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1264	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		452	#ifdef _WIN32
		453	X_MUTEX_CHECK (wrklock);
		454	X_MUTEX_CHECK (reslock);
		455	X_MUTEX_CHECK (reqlock);
		456	X_MUTEX_CHECK (reqwait);
		457	X_MUTEX_CHECK (preadwritelock);
		458	X_MUTEX_CHECK (readdirlock);
		459
		460	X_COND_CHECK (reqwait);
		461	#else
1267	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		463	#endif
1268		464
1269	create_pipe ();	465	create_respipe ();
1270	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	466
		467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
1271	}	469	}
1272		470
1273	void	471	void
1274	max_poll_reqs (int nreqs)	472	max_poll_reqs (int nreqs)
1275	PROTOTYPE: $	473	PROTOTYPE: $
1276	CODE:	474	CODE:
1277	max_poll_reqs = nreqs;	475	eio_set_max_poll_reqs (nreqs);
1278		476
1279	void	477	void
1280	max_poll_time (double nseconds)	478	max_poll_time (double nseconds)
1281	PROTOTYPE: $	479	PROTOTYPE: $
1282	CODE:	480	CODE:
1283	max_poll_time = nseconds * AIO_TICKS;	481	eio_set_max_poll_time (nseconds);
1284		482
1285	void	483	void
1286	min_parallel (int nthreads)	484	min_parallel (int nthreads)
1287	PROTOTYPE: $	485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
1288		488
1289	void	489	void
1290	max_parallel (int nthreads)	490	max_parallel (int nthreads)
1291	PROTOTYPE: $	491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
1292		494
1293	void	495	void
1294	max_idle (int nthreads)	496	max_idle (int nthreads)
1295	PROTOTYPE: $	497	PROTOTYPE: $
1296	CODE:	498	CODE:
1297	set_max_idle (nthreads);	499	eio_set_max_idle (nthreads);
1298		500
1299	int	501	void
1300	max_outstanding (int maxreqs)	502	max_outstanding (int maxreqs)
1301	PROTOTYPE: $	503	PROTOTYPE: $
1302	CODE:	504	CODE:
1303	RETVAL = max_outstanding;
1304	max_outstanding = maxreqs;	505	max_outstanding = maxreqs;
1305	OUTPUT:
1306	RETVAL
1307		506
1308	void	507	void
1309	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1310	SV * pathname
1311	int flags
1312	int mode
1313	SV * callback
1314	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
1315	PPCODE:	510	PPCODE:
1316	{	511	{
1317	dREQ;	512	dREQ;
1318		513
1319	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
1320	req->sv1 = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
1321	req->ptr1 = SvPVbyte_nolen (pathname);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
1322	req->int1 = flags;	517	req->int1 = flags;
1323	req->mode = mode;	518	req->int2 = mode;
1324		519
1325	REQ_SEND;	520	REQ_SEND;
1326	}	521	}
1327		522
1328	void	523	void
1329	aio_close (fh,callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330	SV * fh
1331	SV * callback
1332	PROTOTYPE: $;$	525	PROTOTYPE: $;$
1333	ALIAS:	526	ALIAS:
1334	aio_close = REQ_CLOSE
1335	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
1336	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
1337	PPCODE:	529	PPCODE:
1338	{	530	{
1339	dREQ;	531	dREQ;
1340		532
1341	req->type = ix;	533	req->type = ix;
1342	req->fh = newSVsv (fh);	534	req->sv1 = newSVsv (fh);
1343	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	535	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1344		536
1345	REQ_SEND (req);	537	REQ_SEND (req);
1346	}	538	}
1347		539
1348	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
1349	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350	SV * fh
1351	UV offset
1352	UV length
1353	SV * data
1354	UV dataoffset
1355	SV * callback
1356	ALIAS:	570	ALIAS:
1357	aio_read = REQ_READ	571	aio_read = EIO_READ
1358	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
1359	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
1360	PPCODE:	574	PPCODE:
1361	{	575	{
1362	STRLEN svlen;	576	STRLEN svlen;
1363	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
		578	UV len = SvUV (length);
1364		579
1365	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
1366	SvPOK_on (data);	581	SvPOK_on (data);
1367		582
1368	if (dataoffset < 0)	583	if (dataoffset < 0)
1369	dataoffset += svlen;	584	dataoffset += svlen;
1370		585
1371	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
1372	croak ("data offset outside of string");	587	croak ("dataoffset outside of data scalar");
1373		588
1374	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
1375	{	590	{
1376	/* write: check length and adjust. */	591	/* write: check length and adjust. */
1377	if (length < 0 || length + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
1378	length = svlen - dataoffset;	593	len = svlen - dataoffset;
1379	}	594	}
1380	else	595	else
1381	{	596	{
1382	/* read: grow scalar as necessary */	597	/* read: grow scalar as necessary */
1383	svptr = SvGROW (data, length + dataoffset);	598	svptr = SvGROW (data, len + dataoffset + 1);
1384	}	599	}
1385		600
1386	if (length < 0)	601	if (len < 0)
1387	croak ("length must not be negative");	602	croak ("length must not be negative");
1388		603
1389	{	604	{
1390	dREQ;	605	dREQ;
1391		606
1392	req->type = ix;	607	req->type = ix;
1393	req->fh = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
1394	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1395	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
1396	req->offs = offset;	611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1397	req->size = length;	612	req->size = len;
1398	req->sv1 = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
1399	req->ptr1 = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
1400	req->stroffset = dataoffset;	615	req->stroffset = dataoffset;
1401		616
1402	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
1403	{	618	{
1404	SvREADONLY_on (data);	619	SvREADONLY_on (data);
1405	req->flags |= FLAG_DATA_RO_OFF;	620	req->flags |= FLAG_SV2_RO_OFF;
1406	}	621	}
1407		622
1408	REQ_SEND;	623	REQ_SEND;
1409	}	624	}
1410	}	625	}
1411		626
1412	void	627	void
1413	aio_readlink (path,callback=&PL_sv_undef)	628	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1414	SV * path
1415	SV * callback
1416	PROTOTYPE: $$;$	629	PROTOTYPE: $$;$
1417	PPCODE:	630	PPCODE:
1418	{	631	{
1419	SV *data;	632	SV *data;
1420	dREQ;	633	dREQ;
1421		634
1422	data = newSV (NAME_MAX);	635	data = newSV (NAME_MAX);
1423	SvPOK_on (data);	636	SvPOK_on (data);
1424		637
1425	req->type = REQ_READLINK;	638	req->type = EIO_READLINK;
1426	req->fh = newSVsv (path);	639	req->sv1 = newSVsv (path);
1427	req->ptr2 = SvPVbyte_nolen (path);	640	req->ptr1 = SvPVbyte_nolen (req->sv1);
1428	req->sv1 = data;	641	req->sv2 = data;
1429	req->ptr1 = SvPVbyte_nolen (data);	642	req->ptr2 = SvPVbyte_nolen (data);
1430		643
1431	REQ_SEND;	644	REQ_SEND;
1432	}	645	}
1433		646
1434	void	647	void
1435	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	648	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1436	SV * out_fh
1437	SV * in_fh
1438	UV in_offset
1439	UV length
1440	SV * callback
1441	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
1442	PPCODE:	650	PPCODE:
1443	{	651	{
1444	dREQ;	652	dREQ;
1445		653
1446	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
1447	req->fh = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
1448	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1449	req->sv2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
1450	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1451	req->offs = in_offset;	659	req->offs = SvVAL64 (in_offset);
1452	req->size = length;	660	req->size = length;
1453		661
1454	REQ_SEND;	662	REQ_SEND;
1455	}	663	}
1456		664
1457	void	665	void
1458	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	666	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1459	SV * fh
1460	UV offset
1461	IV length
1462	SV * callback
1463	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
1464	PPCODE:	668	PPCODE:
1465	{	669	{
1466	dREQ;	670	dREQ;
1467		671
1468	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
1469	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1470	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1471	req->offs = offset;	675	req->offs = SvVAL64 (offset);
1472	req->size = length;	676	req->size = length;
1473		677
1474	REQ_SEND;	678	REQ_SEND;
1475	}	679	}
1476		680
1477	void	681	void
1478	aio_stat (fh_or_path,callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479	SV * fh_or_path
1480	SV * callback
1481	ALIAS:	683	ALIAS:
1482	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
1483	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
1484	PPCODE:	686	PPCODE:
1485	{	687	{
1486	dREQ;	688	dREQ;
1487		689
1488	New (0, req->statdata, 1, Stat_t);	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1489	if (!req->statdata)	691	if (!req->ptr2)
1490	{	692	{
1491	req_free (req);	693	req_destroy (req);
1492	croak ("out of memory during aio_req->statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
1493	}	695	}
		696
		697	req->flags |= EIO_FLAG_PTR2_FREE;
		698	req->sv1 = newSVsv (fh_or_path);
1494		699
1495	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
1496	{	701	{
1497	req->type = ix;	702	req->type = ix;
1498	req->sv1 = newSVsv (fh_or_path);
1499	req->ptr1 = SvPVbyte_nolen (fh_or_path);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1500	}	704	}
1501	else	705	else
1502	{	706	{
1503	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
1504	req->fh = newSVsv (fh_or_path);
1505	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506	}	709	}
1507		710
1508	REQ_SEND;	711	REQ_SEND;
1509	}	712	}
1510		713
1511	void	714	void
		715	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		716	PPCODE:
		717	{
		718	dREQ;
		719
		720	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		722	req->sv1 = newSVsv (fh_or_path);
		723
		724	if (SvPOK (fh_or_path))
		725	{
		726	req->type = EIO_UTIME;
		727	req->ptr1 = SvPVbyte_nolen (req->sv1);
		728	}
		729	else
		730	{
		731	req->type = EIO_FUTIME;
		732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		733	}
		734
		735	REQ_SEND;
		736	}
		737
		738	void
		739	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		740	PPCODE:
		741	{
		742	dREQ;
		743
		744	req->sv1 = newSVsv (fh_or_path);
		745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		746
		747	if (SvPOK (fh_or_path))
		748	{
		749	req->type = EIO_TRUNCATE;
		750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		751	}
		752	else
		753	{
		754	req->type = EIO_FTRUNCATE;
		755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		756	}
		757
		758	REQ_SEND;
		759	}
		760
		761	void
		762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
		767	PPCODE:
		768	{
		769	dREQ;
		770
		771	req->type = ix;
		772	req->int2 = mode;
		773	req->sv1 = newSVsv (fh_or_path);
		774
		775	if (ix == EIO_FCHMOD)
		776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		777	else
		778	req->ptr1 = SvPVbyte_nolen (req->sv1);
		779
		780	REQ_SEND;
		781	}
		782
		783	void
		784	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		785	PPCODE:
		786	{
		787	dREQ;
		788
		789	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		791	req->sv1 = newSVsv (fh_or_path);
		792
		793	if (SvPOK (fh_or_path))
		794	{
		795	req->type = EIO_CHOWN;
		796	req->ptr1 = SvPVbyte_nolen (req->sv1);
		797	}
		798	else
		799	{
		800	req->type = EIO_FCHOWN;
		801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		802	}
		803
		804	REQ_SEND;
		805	}
		806
		807	void
1512	aio_unlink (pathname,callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513	SV * pathname
1514	SV * callback
1515	ALIAS:	809	ALIAS:
1516	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
1517	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
1518	aio_readdir = REQ_READDIR	812	aio_readdir = EIO_READDIR
1519	PPCODE:	813	PPCODE:
1520	{	814	{
1521	dREQ;	815	dREQ;
1522		816
1523	req->type = ix;	817	req->type = ix;
1524	req->sv1 = newSVsv (pathname);	818	req->sv1 = newSVsv (pathname);
1525	req->ptr1 = SvPVbyte_nolen (pathname);	819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
		825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
		830	PPCODE:
		831	{
		832	dREQ;
		833
		834	req->type = ix;
		835	req->sv1 = newSVsv (oldpath);
		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
		837	req->sv2 = newSVsv (newpath);
		838	req->ptr2 = SvPVbyte_nolen (req->sv2);
1526		839
1527	REQ_SEND;	840	REQ_SEND;
1528	}	841	}
1529		842
1530	void	843	void
1531	aio_link (oldpath,newpath,callback=&PL_sv_undef)	844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1532	SV * oldpath
1533	SV * newpath
1534	SV * callback
1535	ALIAS:
1536	aio_link = REQ_LINK
1537	aio_symlink = REQ_SYMLINK
1538	aio_rename = REQ_RENAME
1539	PPCODE:	845	PPCODE:
1540	{	846	{
1541	dREQ;	847	dREQ;
1542		848
1543	req->type = ix;
1544	req->fh = newSVsv (oldpath);
1545	req->ptr2 = SvPVbyte_nolen (req->fh);
1546	req->sv1 = newSVsv (newpath);
1547	req->ptr1 = SvPVbyte_nolen (newpath);
1548
1549	REQ_SEND;
1550	}
1551
1552	void
1553	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1554	SV * pathname
1555	SV * callback
1556	UV mode
1557	UV dev
1558	PPCODE:
1559	{
1560	dREQ;
1561
1562	req->type = REQ_MKNOD;	849	req->type = EIO_MKNOD;
1563	req->sv1 = newSVsv (pathname);	850	req->sv1 = newSVsv (pathname);
1564	req->ptr1 = SvPVbyte_nolen (pathname);	851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1565	req->mode = (mode_t)mode;	852	req->int2 = (mode_t)mode;
1566	req->offs = dev;	853	req->offs = dev;
1567		854
1568	REQ_SEND;	855	REQ_SEND;
1569	}	856	}
1570		857
1571	void	858	void
1572	aio_busy (delay,callback=&PL_sv_undef)	859	aio_busy (double delay, SV *callback=&PL_sv_undef)
1573	double delay
1574	SV * callback
1575	PPCODE:	860	PPCODE:
1576	{	861	{
1577	dREQ;	862	dREQ;
1578		863
1579	req->type = REQ_BUSY;	864	req->type = EIO_BUSY;
1580	req->int1 = delay < 0. ? 0 : delay;	865	req->nv1 = delay < 0. ? 0. : delay;
1581	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582		866
1583	REQ_SEND;	867	REQ_SEND;
1584	}	868	}
1585		869
1586	void	870	void
1587	aio_group (callback=&PL_sv_undef)	871	aio_group (SV *callback=&PL_sv_undef)
1588	SV * callback
1589	PROTOTYPE: ;$	872	PROTOTYPE: ;$
1590	PPCODE:	873	PPCODE:
1591	{	874	{
1592	dREQ;	875	dREQ;
1593		876
1594	req->type = REQ_GROUP;	877	req->type = EIO_GROUP;
1595		878
1596	req_send (req);	879	eio_submit (req);
1597	XPUSHs (req_sv (req, AIO_GRP_KLASS));	880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1598	}	881	}
1599		882
1600	void	883	void
1601	aio_nop (callback=&PL_sv_undef)	884	aio_nop (SV *callback=&PL_sv_undef)
1602	SV * callback	885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
1603	PPCODE:	888	PPCODE:
1604	{	889	{
1605	dREQ;	890	dREQ;
1606		891
1607	req->type = REQ_NOP;	892	req->type = ix;
1608		893
1609	REQ_SEND;	894	REQ_SEND;
1610	}	895	}
1611		896
1612	int	897	int
1613	aioreq_pri (int pri = 0)	898	aioreq_pri (int pri = 0)
1614	PROTOTYPE: ;$	899	PROTOTYPE: ;$
1615	CODE:	900	CODE:
1616	RETVAL = next_pri - PRI_BIAS;	901	RETVAL = next_pri - EIO_PRI_BIAS;
1617	if (items > 0)	902	if (items > 0)
1618	{	903	{
1619	if (pri < PRI_MIN) pri = PRI_MIN;	904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1620	if (pri > PRI_MAX) pri = PRI_MAX;	905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1621	next_pri = pri + PRI_BIAS;	906	next_pri = pri + EIO_PRI_BIAS;
1622	}	907	}
1623	OUTPUT:	908	OUTPUT:
1624	RETVAL	909	RETVAL
1625		910
1626	void	911	void
1627	aioreq_nice (int nice = 0)	912	aioreq_nice (int nice = 0)
1628	CODE:	913	CODE:
1629	nice = next_pri - nice;	914	nice = next_pri - nice;
1630	if (nice < PRI_MIN) nice = PRI_MIN;	915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1631	if (nice > PRI_MAX) nice = PRI_MAX;	916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1632	next_pri = nice + PRI_BIAS;	917	next_pri = nice + EIO_PRI_BIAS;
1633		918
1634	void	919	void
1635	flush ()	920	flush ()
1636	PROTOTYPE:	921	PROTOTYPE:
1637	CODE:	922	CODE:
1638	while (nreqs)	923	while (nreqs)
1639	{	924	{
1640	poll_wait ();	925	poll_wait ();
1641	poll_cb (0);	926	poll_cb ();
1642	}	927	}
1643		928
1644	void	929	int
1645	poll()	930	poll()
1646	PROTOTYPE:	931	PROTOTYPE:
1647	CODE:	932	CODE:
1648	if (nreqs)
1649	{
1650	poll_wait ();	933	poll_wait ();
1651	poll_cb (0);	934	RETVAL = poll_cb ();
1652	}	935	OUTPUT:
		936	RETVAL
1653		937
1654	int	938	int
1655	poll_fileno()	939	poll_fileno()
1656	PROTOTYPE:	940	PROTOTYPE:
1657	CODE:	941	CODE:
…		…
1669		953
1670	void	954	void
1671	poll_wait()	955	poll_wait()
1672	PROTOTYPE:	956	PROTOTYPE:
1673	CODE:	957	CODE:
1674	if (nreqs)
1675	poll_wait ();	958	poll_wait ();
1676		959
1677	int	960	int
1678	nreqs()	961	nreqs()
1679	PROTOTYPE:	962	PROTOTYPE:
1680	CODE:	963	CODE:
1681	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1682	OUTPUT:	965	OUTPUT:
1683	RETVAL	966	RETVAL
1684		967
1685	int	968	int
1686	nready()	969	nready()
1687	PROTOTYPE:	970	PROTOTYPE:
1688	CODE:	971	CODE:
1689	RETVAL = get_nready ();	972	RETVAL = eio_nready ();
1690	OUTPUT:	973	OUTPUT:
1691	RETVAL	974	RETVAL
1692		975
1693	int	976	int
1694	npending()	977	npending()
1695	PROTOTYPE:	978	PROTOTYPE:
1696	CODE:	979	CODE:
1697	RETVAL = get_npending ();	980	RETVAL = eio_npending ();
1698	OUTPUT:	981	OUTPUT:
1699	RETVAL	982	RETVAL
1700		983
1701	int	984	int
1702	nthreads()	985	nthreads()
1703	PROTOTYPE:	986	PROTOTYPE:
1704	CODE:	987	CODE:
1705	if (WORDACCESS_UNSAFE) LOCK (wrklock);	988	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1706	RETVAL = started;	989	RETVAL = started;
1707	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	990	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1708	OUTPUT:	991	OUTPUT:
1709	RETVAL	992	RETVAL
1710		993
1711	PROTOTYPES: DISABLE	994	PROTOTYPES: DISABLE
1712		995
1713	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1714		997
1715	void	998	void
1716	cancel (aio_req_ornot req)	999	cancel (aio_req_ornot req)
1717	CODE:	1000	CODE:
1718	req_cancel (req);	1001	eio_cancel (req);
1719		1002
1720	void	1003	void
1721	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1722	CODE:	1005	CODE:
1723	SvREFCNT_dec (req->callback);	1006	SvREFCNT_dec (req->callback);
…		…
1728	void	1011	void
1729	add (aio_req grp, ...)	1012	add (aio_req grp, ...)
1730	PPCODE:	1013	PPCODE:
1731	{	1014	{
1732	int i;	1015	int i;
1733	aio_req req;
1734		1016
1735	if (grp->int1 == 2)	1017	if (grp->int1 == 2)
1736	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737		1019
1738	for (i = 1; i < items; ++i )	1020	for (i = 1; i < items; ++i )
1739	{	1021	{
		1022	aio_req req;
		1023
1740	if (GIMME_V != G_VOID)	1024	if (GIMME_V != G_VOID)
1741	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1742		1026
1743	req = SvAIO_REQ (ST (i));	1027	req = SvAIO_REQ (ST (i));
1744		1028
1745	if (req)	1029	if (req)
1746	{	1030	eio_grp_add (grp, req);
1747	++grp->size;
1748	req->grp = grp;
1749
1750	req->grp_prev = 0;
1751	req->grp_next = grp->grp_first;
1752
1753	if (grp->grp_first)
1754	grp->grp_first->grp_prev = req;
1755
1756	grp->grp_first = req;
1757	}
1758	}	1031	}
1759	}	1032	}
1760		1033
1761	void	1034	void
1762	cancel_subs (aio_req_ornot req)	1035	cancel_subs (aio_req_ornot req)
…		…
1787	grp->errorno = errorno;	1060	grp->errorno = errorno;
1788		1061
1789	void	1062	void
1790	limit (aio_req grp, int limit)	1063	limit (aio_req grp, int limit)
1791	CODE:	1064	CODE:
1792	grp->int2 = limit;	1065	eio_grp_limit (grp, limit);
1793	aio_grp_feed (grp);
1794		1066
1795	void	1067	void
1796	feed (aio_req grp, SV *callback=&PL_sv_undef)	1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1797	CODE:	1069	CODE:
1798	{	1070	{
…		…
1800	grp->sv2 = newSVsv (callback);	1072	grp->sv2 = newSVsv (callback);
1801		1073
1802	if (grp->int2 <= 0)	1074	if (grp->int2 <= 0)
1803	grp->int2 = 2;	1075	grp->int2 = 2;
1804		1076
1805	aio_grp_feed (grp);	1077	eio_grp_limit (grp, grp->int2);
1806	}	1078	}
1807		1079

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