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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC vs.
Revision 1.130 by root, Thu Oct 2 11:35:03 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	/* perl namespace pollution */
34	# if __linux	19	#undef VERSION
35	# include <sys/sendfile.h>	20
36	# elif __freebsd	21	#ifdef _WIN32
37	# include <sys/socket.h>	22
38	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	24	# undef malloc
40	# include <sys/socket.h>	25	# undef free
41	# elif __solaris /* not yet */	26
42	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
43	# else	59	#else
44	# error sendfile support requested but not available	60
45	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
46	#endif	68	#endif
47		69
48	/* number of seconds after which idle threads exit */	70	/* perl stupidly overrides readdir and maybe others */
49	#define IDLE_TIMEOUT 10	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
50		75
51	/* used for struct dirent, AIX doesn't provide it */	76	#define EIO_STRUCT_STAT Stat_t
52	#ifndef NAME_MAX	77
53	# define NAME_MAX 4096	78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
54	#endif	83	#endif
55		84
56	#ifndef PTHREAD_STACK_MIN	85	/*****************************************************************************/
57	/* care for broken platforms, e.g. windows */	86
58	# define PTHREAD_STACK_MIN 16384	87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
59	#endif	91	#endif
60		92
61	#if __ia64	93	#define expect_false(expr) expect ((expr) != 0, 0)
62	# define STACKSIZE 65536	94	#define expect_true(expr) expect ((expr) != 0, 1)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68		95
69	/* wether word reads are potentially non-atomic.	96	/*****************************************************************************/
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif
79	#endif
80		97
81	/* buffer size for various temporary buffers */	98	static HV *stash;
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 */	99	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		100
108	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
110		103
111	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;	105	SV *callback; \
116	SV *sv1, *sv2;	106	SV *sv1, *sv2; \
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;	107	STRLEN stroffset; \
123	int type;	108	SV *self;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127		109
128	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
129	unsigned char pri;
130		111
131	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
133	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void aio_grp_feed (eio_req *grp);
		117	#define EIO_FEED(req) aio_grp_feed (req)
		118	static void req_destroy (eio_req *grp);
		119	#define EIO_DESTROY(req) req_destroy (req)
134		120
135	enum {	121	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	122	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};	123	};
140		124
		125	#include "libeio/eio.c"
		126
141	typedef aio_cb *aio_req;	127	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	128	typedef eio_req *aio_req_ornot;
143		129
144	enum {	130	static SV *on_next_submit;
145	PRI_MIN = -4,	131	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	132	static int max_outstanding;
147		133
148	DEFAULT_PRI = 0,	134	static int respipe_osf [2], respipe [2] = { -1, -1 };
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152		135
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;
166
167	static unsigned int started, idle, wanted;
168
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);	136	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	137	static void req_cancel (aio_req req);
		138
		139	static void want_poll (void)
		140	{
		141	/* write a dummy byte to the pipe so fh becomes ready */
		142	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		143	}
		144
		145	static void done_poll (void)
		146	{
		147	/* read any signals sent by the worker threads */
		148	char buf [4];
		149	while (respipe_read (respipe [0], buf, 4) == 4)
		150	;
		151	}
328		152
329	/* must be called at most once */	153	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	154	static SV *req_sv (aio_req req, const char *klass)
331	{	155	{
332	if (!req->self)	156	if (!req->self)
…		…
350	return mg ? (aio_req)mg->mg_ptr : 0;	174	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	175	}
352		176
353	static void aio_grp_feed (aio_req grp)	177	static void aio_grp_feed (aio_req grp)
354	{	178	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	179	if (grp->sv2 && SvOK (grp->sv2))
356	{	180	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	181	dSP;
362		182
363	ENTER;	183	ENTER;
364	SAVETMPS;	184	SAVETMPS;
365	PUSHMARK (SP);	185	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	186	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
367	PUTBACK;	187	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	188	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	189	SPAGAIN;
370	FREETMPS;	190	FREETMPS;
371	LEAVE;	191	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	}	192	}
382	}	193	}
383		194
384	static void aio_grp_dec (aio_req grp)	195	static void req_submit (eio_req *req)
385	{	196	{
386	--grp->size;	197	eio_submit (req);
387		198
388	/* call feeder, if applicable */	199	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	200	{
394	req_invoke (grp);	201	dSP;
395	req_free (grp);	202	SV *cb = sv_2mortal (on_next_submit);
		203
		204	on_next_submit = 0;
		205
		206	PUSHMARK (SP);
		207	PUTBACK;
		208	call_sv (cb, G_DISCARD | G_EVAL);
396	}	209	}
397	}	210	}
398		211
399	static void req_invoke (aio_req req)	212	static int req_invoke (eio_req *req)
400	{	213	{
401	dSP;	214	dSP;
402		215
403	if (req->flags & FLAG_SV1_RO_OFF)	216	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	217	SvREADONLY_off (req->sv2);
405		218
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	219	if (!EIO_CANCELLED (req) && req->callback)
407	{	220	{
408	ENTER;	221	ENTER;
409	SAVETMPS;	222	SAVETMPS;
410	PUSHMARK (SP);	223	PUSHMARK (SP);
411	EXTEND (SP, 1);	224	EXTEND (SP, 1);
412		225
413	switch (req->type)	226	switch (req->type)
414	{	227	{
415	case REQ_READDIR:	228	case EIO_READDIR:
416	{	229	{
417	SV *rv = &PL_sv_undef;	230	SV *rv = &PL_sv_undef;
418		231
419	if (req->result >= 0)	232	if (req->result >= 0)
420	{	233	{
…		…
437		250
438	PUSHs (rv);	251	PUSHs (rv);
439	}	252	}
440	break;	253	break;
441		254
442	case REQ_OPEN:	255	case EIO_OPEN:
443	{	256	{
444	/* convert fd to fh */	257	/* convert fd to fh */
445	SV *fh;	258	SV *fh = &PL_sv_undef;
446		259
447	PUSHs (sv_2mortal (newSViv (req->result)));	260	if (req->result >= 0)
448	PUTBACK;	261	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	262	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	263	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		264	char sym [64];
		265	int symlen;
		266
		267	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		268	gv_init (gv, stash, sym, symlen, 0);
451		269
452	fh = POPs;	270	symlen = snprintf (
453	PUSHMARK (SP);	271	sym,
		272	sizeof (sym),
		273	"%s&=%d",
		274	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		275	req->result
		276	);
		277
		278	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		279	fh = (SV *)gv;
		280	}
		281
454	XPUSHs (fh);	282	PUSHs (fh);
455	}	283	}
456	break;	284	break;
457		285
458	case REQ_GROUP:	286	case EIO_GROUP:
459	req->int1 = 2; /* mark group as finished */	287	req->int1 = 2; /* mark group as finished */
460		288
461	if (req->sv1)	289	if (req->sv1)
462	{	290	{
463	int i;	291	int i;
…		…
467	for (i = 0; i <= AvFILL (av); ++i)	295	for (i = 0; i <= AvFILL (av); ++i)
468	PUSHs (*av_fetch (av, i, 0));	296	PUSHs (*av_fetch (av, i, 0));
469	}	297	}
470	break;	298	break;
471		299
472	case REQ_NOP:	300	case EIO_NOP:
473	case REQ_BUSY:	301	case EIO_BUSY:
474	break;	302	break;
475		303
476	case REQ_READLINK:	304	case EIO_READLINK:
477	if (req->result > 0)	305	if (req->result > 0)
478	{	306	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
479	SvCUR_set (req->sv1, req->result);
480	*SvEND (req->sv1) = 0;
481	PUSHs (req->sv1);
482	}
483	break;	307	break;
484		308
485	case REQ_STAT:	309	case EIO_STAT:
486	case REQ_LSTAT:	310	case EIO_LSTAT:
487	case REQ_FSTAT:	311	case EIO_FSTAT:
488	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	312	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
489	PL_laststatval = req->result;	313	PL_laststatval = req->result;
490	PL_statcache = *(Stat_t *)(req->ptr2);	314	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
491	PUSHs (sv_2mortal (newSViv (req->result)));	315	PUSHs (sv_2mortal (newSViv (req->result)));
492	break;	316	break;
493		317
494	case REQ_READ:	318	case EIO_READ:
495	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	319	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
496	*SvEND (req->sv1) = 0;	320	*SvEND (req->sv2) = 0;
497	PUSHs (sv_2mortal (newSViv (req->result)));	321	PUSHs (sv_2mortal (newSViv (req->result)));
498	break;	322	break;
		323
		324	case EIO_DUP2:
		325	if (req->result > 0)
		326	req->result = 0;
		327	/* FALLTHROUGH */
499		328
500	default:	329	default:
501	PUSHs (sv_2mortal (newSViv (req->result)));	330	PUSHs (sv_2mortal (newSViv (req->result)));
502	break;	331	break;
503	}	332	}
504		333
505	errno = req->errorno;	334	errno = req->errorno;
506		335
507	PUTBACK;	336	PUTBACK;
508	call_sv (req->callback, G_VOID | G_EVAL);	337	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
509	SPAGAIN;	338	SPAGAIN;
510		339
511	FREETMPS;	340	FREETMPS;
512	LEAVE;	341	LEAVE;
		342
		343	PUTBACK;
513	}	344	}
514		345
515	if (req->grp)	346	return !!SvTRUE (ERRSV);
516	{
517	aio_req grp = req->grp;
518
519	/* unlink request */
520	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
521	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
522
523	if (grp->grp_first == req)
524	grp->grp_first = req->grp_next;
525
526	aio_grp_dec (grp);
527	}
528
529	if (SvTRUE (ERRSV))
530	{
531	req_free (req);
532	croak (0);
533	}
534	}	347	}
535		348
536	static void req_free (aio_req req)	349	static void req_destroy (aio_req req)
537	{	350	{
538	if (req->self)	351	if (req->self)
539	{	352	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	353	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	354	SvREFCNT_dec (req->self);
542	}	355	}
543		356
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	357	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	358	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	359	SvREFCNT_dec (req->callback);
548		360
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	361	Safefree (req);
553	}	362	}
554		363
555	static void req_cancel_subs (aio_req grp)	364	static void req_cancel_subs (aio_req grp)
556	{	365	{
557	aio_req sub;	366	aio_req sub;
558		367
559	if (grp->type != REQ_GROUP)	368	if (grp->type != EIO_GROUP)
560	return;	369	return;
561		370
562	SvREFCNT_dec (grp->sv2);	371	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	372	grp->sv2 = 0;
564		373
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	374	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	375	}
568		376
569	static void req_cancel (aio_req req)	377	#ifdef USE_SOCKETS_AS_HANDLES
570	{	378	# define TO_SOCKET(x) (win32_get_osfhandle (x))
571	req->flags |= FLAG_CANCELLED;	379	#else
572		380	# define TO_SOCKET(x) (x)
573	req_cancel_subs (req);
574	}
575
576	static void *aio_proc(void *arg);
577
578	static void start_thread (void)
579	{
580	sigset_t fullsigset, oldsigset;
581	pthread_attr_t attr;
582
583	worker *wrk = calloc (1, sizeof (worker));
584
585	if (!wrk)
586	croak ("unable to allocate worker thread data");
587
588	pthread_attr_init (&attr);
589	pthread_attr_setstacksize (&attr, STACKSIZE);
590	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
591	#ifdef PTHREAD_SCOPE_PROCESS
592	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
593	#endif	381	#endif
594		382
595	sigfillset (&fullsigset);	383	static void
		384	create_respipe (void)
		385	{
		386	int old_readfd = respipe [0];
596		387
597	LOCK (wrklock);	388	if (respipe [1] >= 0)
598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	389	respipe_close (TO_SOCKET (respipe [1]));
599		390
600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	391	#ifdef _WIN32
		392	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		393	#else
		394	if (pipe (respipe))
		395	#endif
		396	croak ("unable to initialize result pipe");
		397
		398	if (old_readfd >= 0)
601	{	399	{
602	wrk->prev = &wrk_first;	400	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
603	wrk->next = wrk_first.next;	401	croak ("unable to initialize result pipe(2)");
604	wrk_first.next->prev = wrk;	402
605	wrk_first.next = wrk;	403	respipe_close (respipe [0]);
606	++started;	404	respipe [0] = old_readfd;
607	}	405	}
608	else
609	free (wrk);
610		406
611	sigprocmask (SIG_SETMASK, &oldsigset, 0);	407	#ifdef _WIN32
612	UNLOCK (wrklock);	408	int arg = 1;
613	}	409	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		410	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		411	#else
		412	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		413	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		414	#endif
		415	croak ("unable to initialize result pipe(3)");
614		416
615	static void maybe_start_thread ()	417	respipe_osf [0] = TO_SOCKET (respipe [0]);
616	{	418	respipe_osf [1] = TO_SOCKET (respipe [1]);
617	if (get_nthreads () >= wanted)
618	return;
619
620	/* todo: maybe use idle here, but might be less exact */
621	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
622	return;
623
624	start_thread ();
625	}	419	}
626		420
627	static void req_send (aio_req req)
628	{
629	++nreqs;
630
631	LOCK (reqlock);
632	++nready;
633	reqq_push (&req_queue, req);
634	pthread_cond_signal (&reqwait);
635	UNLOCK (reqlock);
636
637	maybe_start_thread ();
638	}
639
640	static void end_thread (void)
641	{
642	aio_req req;
643
644	Newz (0, req, 1, aio_cb);
645
646	req->type = REQ_QUIT;
647	req->pri = PRI_MAX + PRI_BIAS;
648
649	LOCK (reqlock);
650	reqq_push (&req_queue, req);
651	pthread_cond_signal (&reqwait);
652	UNLOCK (reqlock);
653
654	LOCK (wrklock);
655	--started;
656	UNLOCK (wrklock);
657	}
658
659	static void set_max_idle (int nthreads)
660	{
661	if (WORDACCESS_UNSAFE) LOCK (reqlock);
662	max_idle = nthreads <= 0 ? 1 : nthreads;
663	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
664	}
665
666	static void min_parallel (int nthreads)
667	{
668	if (wanted < nthreads)
669	wanted = nthreads;
670	}
671
672	static void max_parallel (int nthreads)
673	{
674	if (wanted > nthreads)
675	wanted = nthreads;
676
677	while (started > wanted)
678	end_thread ();
679	}
680
681	static void poll_wait ()	421	static void poll_wait (void)
682	{	422	{
683	fd_set rfd;	423	fd_set rfd;
684		424
685	while (nreqs)	425	while (eio_nreqs ())
686	{	426	{
687	int size;	427	int size;
688	if (WORDACCESS_UNSAFE) LOCK (reslock);	428
		429	X_LOCK (reslock);
689	size = res_queue.size;	430	size = res_queue.size;
690	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	431	X_UNLOCK (reslock);
691		432
692	if (size)	433	if (size)
693	return;	434	return;
694		435
695	maybe_start_thread ();	436	etp_maybe_start_thread ();
696		437
697	FD_ZERO(&rfd);	438	FD_ZERO (&rfd);
698	FD_SET(respipe [0], &rfd);	439	FD_SET (respipe [0], &rfd);
699		440
700	select (respipe [0] + 1, &rfd, 0, 0, 0);	441	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
701	}	442	}
702	}	443	}
703		444
704	static int poll_cb ()	445	static int poll_cb (void)
705	{	446	{
706	dSP;
707	int count = 0;
708	int maxreqs = max_poll_reqs;
709	int do_croak = 0;
710	struct timeval tv_start, tv_now;
711	aio_req req;
712
713	if (max_poll_time)
714	gettimeofday (&tv_start, 0);
715
716	for (;;)	447	for (;;)
717	{	448	{
718	for (;;)	449	int res = eio_poll ();
719	{
720	maybe_start_thread ();
721		450
722	LOCK (reslock);	451	if (res > 0)
723	req = reqq_shift (&res_queue);
724
725	if (req)
726	{
727	--npending;
728
729	if (!res_queue.size)
730	{
731	/* read any signals sent by the worker threads */
732	char buf [32];
733	while (read (respipe [0], buf, 32) == 32)
734	;
735	}
736	}
737
738	UNLOCK (reslock);
739
740	if (!req)
741	break;
742
743	--nreqs;
744
745	if (req->type == REQ_GROUP && req->size)
746	{
747	req->int1 = 1; /* mark request as delayed */
748	continue;
749	}
750	else
751	{
752	req_invoke (req);
753
754	count++;
755	}
756
757	req_free (req);
758
759	if (maxreqs && !--maxreqs)
760	break;
761
762	if (max_poll_time)
763	{
764	gettimeofday (&tv_now, 0);
765
766	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
767	break;
768	}
769	}
770
771	if (nreqs <= max_outstanding)
772	break;	452	croak (0);
		453
		454	if (!max_outstanding || max_outstanding > eio_nreqs ())
		455	return res;
773		456
774	poll_wait ();	457	poll_wait ();
775
776	++maxreqs;
777	}	458	}
778
779	return count;
780	}	459	}
781		460
782	static void create_pipe ()	461	static void atfork_child (void)
783	{	462	{
784	if (pipe (respipe))	463	create_respipe ();
785	croak ("unable to initialize result pipe");
786
787	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
788	croak ("cannot set result pipe to nonblocking mode");
789
790	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
791	croak ("cannot set result pipe to nonblocking mode");
792	}	464	}
793		465
794	/*****************************************************************************/	466	static SV *
795	/* work around various missing functions */	467	get_cb (SV *cb_sv)
796
797	#if !HAVE_PREADWRITE
798	# define pread aio_pread
799	# define pwrite aio_pwrite
800
801	/*
802	* make our pread/pwrite safe against themselves, but not against
803	* normal read/write by using a mutex. slows down execution a lot,
804	* but that's your problem, not mine.
805	*/
806	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
807
808	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
809	{	468	{
810	ssize_t res;	469	HV *st;
811	off_t ooffset;	470	GV *gvp;
		471	CV *cv;
812		472
813	LOCK (preadwritelock);	473	if (!SvOK (cb_sv))
814	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);
816	res = read (fd, buf, count);
817	lseek (fd, ooffset, SEEK_SET);
818	UNLOCK (preadwritelock);
819
820	return res;
821	}
822
823	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
824	{
825	ssize_t res;
826	off_t ooffset;
827
828	LOCK (preadwritelock);
829	ooffset = lseek (fd, 0, SEEK_CUR);
830	lseek (fd, offset, SEEK_SET);
831	res = write (fd, buf, count);
832	lseek (fd, offset, SEEK_SET);
833	UNLOCK (preadwritelock);
834
835	return res;
836	}
837	#endif
838
839	#if !HAVE_FDATASYNC
840	# define fdatasync fsync
841	#endif
842
843	#if !HAVE_READAHEAD
844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
845
846	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
847	{
848	dBUF;
849
850	while (count > 0)
851	{
852	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
853
854	pread (fd, aio_buf, len, offset);
855	offset += len;
856	count -= len;
857	}
858
859	errno = 0;
860	}
861
862	#endif
863
864	#if !HAVE_READDIR_R
865	# define readdir_r aio_readdir_r
866
867	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
868
869	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
870	{
871	struct dirent *e;
872	int errorno;
873
874	LOCK (readdirlock);
875
876	e = readdir (dirp);
877	errorno = errno;
878
879	if (e)
880	{
881	*res = ent;
882	strcpy (ent->d_name, e->d_name);
883	}
884	else
885	*res = 0;
886
887	UNLOCK (readdirlock);
888
889	errno = errorno;
890	return e ? 0 : -1;
891	}
892	#endif
893
894	/* sendfile always needs emulation */
895	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
896	{
897	ssize_t res;
898
899	if (!count)
900	return 0;	474	return 0;
901		475
902	#if HAVE_SENDFILE	476	cv = sv_2cv (cb_sv, &st, &gvp, 0);
903	# if __linux
904	res = sendfile (ofd, ifd, &offset, count);
905		477
906	# elif __freebsd	478	if (!cv)
907	/*	479	croak ("IO::AIO callback must be undef or a CODE reference");
908	* Of course, the freebsd sendfile is a dire hack with no thoughts
909	* wasted on making it similar to other I/O functions.
910	*/
911	{
912	off_t sbytes;
913	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
914		480
915	if (res < 0 && sbytes)	481	return (SV *)cv;
916	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
917	res = sbytes;
918	}
919
920	# elif __hpux
921	res = sendfile (ofd, ifd, offset, count, 0, 0);
922
923	# elif __solaris
924	{
925	struct sendfilevec vec;
926	size_t sbytes;
927
928	vec.sfv_fd = ifd;
929	vec.sfv_flag = 0;
930	vec.sfv_off = offset;
931	vec.sfv_len = count;
932
933	res = sendfilev (ofd, &vec, 1, &sbytes);
934
935	if (res < 0 && sbytes)
936	res = sbytes;
937	}
938
939	# endif
940	#else
941	res = -1;
942	errno = ENOSYS;
943	#endif
944
945	if (res < 0
946	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
947	#if __solaris
948	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
949	#endif
950	)
951	)
952	{
953	/* emulate sendfile. this is a major pain in the ass */
954	dBUF;
955
956	res = 0;
957
958	while (count)
959	{
960	ssize_t cnt;
961
962	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
963
964	if (cnt <= 0)
965	{
966	if (cnt && !res) res = -1;
967	break;
968	}
969
970	cnt = write (ofd, aio_buf, cnt);
971
972	if (cnt <= 0)
973	{
974	if (cnt && !res) res = -1;
975	break;
976	}
977
978	offset += cnt;
979	res += cnt;
980	count -= cnt;
981	}
982	}
983
984	return res;
985	}
986
987	/* read a full directory */
988	static void scandir_ (aio_req req, worker *self)
989	{
990	DIR *dirp;
991	union
992	{
993	struct dirent d;
994	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
995	} *u;
996	struct dirent *entp;
997	char *name, *names;
998	int memlen = 4096;
999	int memofs = 0;
1000	int res = 0;
1001	int errorno;
1002
1003	LOCK (wrklock);
1004	self->dirp = dirp = opendir (req->ptr1);
1005	self->dbuf = u = malloc (sizeof (*u));
1006	req->flags |= FLAG_PTR2_FREE;
1007	req->ptr2 = names = malloc (memlen);
1008	UNLOCK (wrklock);
1009
1010	if (dirp && u && names)
1011	for (;;)
1012	{
1013	errno = 0;
1014	readdir_r (dirp, &u->d, &entp);
1015
1016	if (!entp)
1017	break;
1018
1019	name = entp->d_name;
1020
1021	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1022	{
1023	int len = strlen (name) + 1;
1024
1025	res++;
1026
1027	while (memofs + len > memlen)
1028	{
1029	memlen *= 2;
1030	LOCK (wrklock);
1031	req->ptr2 = names = realloc (names, memlen);
1032	UNLOCK (wrklock);
1033
1034	if (!names)
1035	break;
1036	}
1037
1038	memcpy (names + memofs, name, len);
1039	memofs += len;
1040	}
1041	}
1042
1043	if (errno)
1044	res = -1;
1045
1046	req->result = res;
1047	}
1048
1049	/*****************************************************************************/
1050
1051	static void *aio_proc (void *thr_arg)
1052	{
1053	aio_req req;
1054	struct timespec ts;
1055	worker *self = (worker *)thr_arg;
1056
1057	/* try to distribute timeouts somewhat evenly */
1058	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1059	* (1000000000UL / 1024UL);
1060
1061	for (;;)
1062	{
1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1064
1065	LOCK (reqlock);
1066
1067	for (;;)
1068	{
1069	self->req = req = reqq_shift (&req_queue);
1070
1071	if (req)
1072	break;
1073
1074	++idle;
1075
1076	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1077	== ETIMEDOUT)
1078	{
1079	if (idle > max_idle)
1080	{
1081	--idle;
1082	UNLOCK (reqlock);
1083	LOCK (wrklock);
1084	--started;
1085	UNLOCK (wrklock);
1086	goto quit;
1087	}
1088
1089	/* we are allowed to idle, so do so without any timeout */
1090	pthread_cond_wait (&reqwait, &reqlock);
1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1092	}
1093
1094	--idle;
1095	}
1096
1097	--nready;
1098
1099	UNLOCK (reqlock);
1100
1101	errno = 0; /* strictly unnecessary */
1102
1103	if (!(req->flags & FLAG_CANCELLED))
1104	switch (req->type)
1105	{
1106	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1107	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1108
1109	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1110	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1111
1112	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1113	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1115
1116	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1117	case REQ_CLOSE: req->result = close (req->int1); break;
1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1122	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1123	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1124	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1125
1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1127	case REQ_FSYNC: req->result = fsync (req->int1); break;
1128	case REQ_READDIR: scandir_ (req, self); break;
1129
1130	case REQ_BUSY:
1131	{
1132	struct timeval tv;
1133
1134	tv.tv_sec = req->int1;
1135	tv.tv_usec = req->int2;
1136
1137	req->result = select (0, 0, 0, 0, &tv);
1138	}
1139
1140	case REQ_GROUP:
1141	case REQ_NOP:
1142	break;
1143
1144	case REQ_QUIT:
1145	goto quit;
1146
1147	default:
1148	req->result = ENOSYS;
1149	break;
1150	}
1151
1152	req->errorno = errno;
1153
1154	LOCK (reslock);
1155
1156	++npending;
1157
1158	if (!reqq_push (&res_queue, req))
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	self->req = 0;
1163	worker_clear (self);
1164
1165	UNLOCK (reslock);
1166	}
1167
1168	quit:
1169	LOCK (wrklock);
1170	worker_free (self);
1171	UNLOCK (wrklock);
1172
1173	return 0;
1174	}
1175
1176	/*****************************************************************************/
1177
1178	static void atfork_prepare (void)
1179	{
1180	LOCK (wrklock);
1181	LOCK (reqlock);
1182	LOCK (reslock);
1183	#if !HAVE_PREADWRITE
1184	LOCK (preadwritelock);
1185	#endif
1186	#if !HAVE_READDIR_R
1187	LOCK (readdirlock);
1188	#endif
1189	}
1190
1191	static void atfork_parent (void)
1192	{
1193	#if !HAVE_READDIR_R
1194	UNLOCK (readdirlock);
1195	#endif
1196	#if !HAVE_PREADWRITE
1197	UNLOCK (preadwritelock);
1198	#endif
1199	UNLOCK (reslock);
1200	UNLOCK (reqlock);
1201	UNLOCK (wrklock);
1202	}
1203
1204	static void atfork_child (void)
1205	{
1206	aio_req prv;
1207
1208	while (prv = reqq_shift (&req_queue))
1209	req_free (prv);
1210
1211	while (prv = reqq_shift (&res_queue))
1212	req_free (prv);
1213
1214	while (wrk_first.next != &wrk_first)
1215	{
1216	worker *wrk = wrk_first.next;
1217
1218	if (wrk->req)
1219	req_free (wrk->req);
1220
1221	worker_clear (wrk);
1222	worker_free (wrk);
1223	}
1224
1225	started = 0;
1226	idle = 0;
1227	nreqs = 0;
1228	nready = 0;
1229	npending = 0;
1230
1231	close (respipe [0]);
1232	close (respipe [1]);
1233	create_pipe ();
1234
1235	atfork_parent ();
1236	}	482	}
1237		483
1238	#define dREQ \	484	#define dREQ \
		485	SV *cb_cv; \
1239	aio_req req; \	486	aio_req req; \
1240	int req_pri = next_pri; \	487	int req_pri = next_pri; \
1241	next_pri = DEFAULT_PRI + PRI_BIAS; \	488	next_pri = EIO_PRI_DEFAULT; \
1242	\	489	\
1243	if (SvOK (callback) && !SvROK (callback)) \	490	cb_cv = get_cb (callback); \
1244	croak ("callback must be undef or of reference type"); \
1245	\	491	\
1246	Newz (0, req, 1, aio_cb); \	492	Newz (0, req, 1, eio_req); \
1247	if (!req) \	493	if (!req) \
1248	croak ("out of memory during aio_req allocation"); \	494	croak ("out of memory during eio_req allocation"); \
1249	\	495	\
1250	req->callback = newSVsv (callback); \	496	req->callback = SvREFCNT_inc (cb_cv); \
1251	req->pri = req_pri	497	req->pri = req_pri
1252		498
1253	#define REQ_SEND \	499	#define REQ_SEND \
		500	PUTBACK; \
1254	req_send (req); \	501	req_submit (req); \
		502	SPAGAIN; \
1255	\	503	\
1256	if (GIMME_V != G_VOID) \	504	if (GIMME_V != G_VOID) \
1257	XPUSHs (req_sv (req, AIO_REQ_KLASS));	505	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1258		506
1259	MODULE = IO::AIO PACKAGE = IO::AIO	507	MODULE = IO::AIO PACKAGE = IO::AIO
1260		508
1261	PROTOTYPES: ENABLE	509	PROTOTYPES: ENABLE
1262		510
1263	BOOT:	511	BOOT:
1264	{	512	{
1265	HV *stash = gv_stashpv ("IO::AIO", 1);	513	stash = gv_stashpv ("IO::AIO", 1);
1266		514
1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	515	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	516	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1269	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	517	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1270	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	518	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1271	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	519	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		520	#ifndef _WIN32
1272	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	521	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		522	#endif
1273		523
1274	create_pipe ();	524	create_respipe ();
1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	525
		526	if (eio_init (want_poll, done_poll) < 0)
		527	croak ("IO::AIO: unable to initialise eio library");
		528
		529	/* atfork child called in fifo order, so before eio's handler */
		530	X_THREAD_ATFORK (0, 0, atfork_child);
1276	}	531	}
1277		532
1278	void	533	void
1279	max_poll_reqs (int nreqs)	534	max_poll_reqs (int nreqs)
1280	PROTOTYPE: $	535	PROTOTYPE: $
1281	CODE:	536	CODE:
1282	max_poll_reqs = nreqs;	537	eio_set_max_poll_reqs (nreqs);
1283		538
1284	void	539	void
1285	max_poll_time (double nseconds)	540	max_poll_time (double nseconds)
1286	PROTOTYPE: $	541	PROTOTYPE: $
1287	CODE:	542	CODE:
1288	max_poll_time = nseconds * AIO_TICKS;	543	eio_set_max_poll_time (nseconds);
1289		544
1290	void	545	void
1291	min_parallel (int nthreads)	546	min_parallel (int nthreads)
1292	PROTOTYPE: $	547	PROTOTYPE: $
		548	CODE:
		549	eio_set_min_parallel (nthreads);
1293		550
1294	void	551	void
1295	max_parallel (int nthreads)	552	max_parallel (int nthreads)
1296	PROTOTYPE: $	553	PROTOTYPE: $
		554	CODE:
		555	eio_set_max_parallel (nthreads);
1297		556
1298	void	557	void
1299	max_idle (int nthreads)	558	max_idle (int nthreads)
1300	PROTOTYPE: $	559	PROTOTYPE: $
1301	CODE:	560	CODE:
1302	set_max_idle (nthreads);	561	eio_set_max_idle (nthreads);
1303		562
1304	int	563	void
1305	max_outstanding (int maxreqs)	564	max_outstanding (int maxreqs)
1306	PROTOTYPE: $	565	PROTOTYPE: $
1307	CODE:	566	CODE:
1308	RETVAL = max_outstanding;
1309	max_outstanding = maxreqs;	567	max_outstanding = maxreqs;
1310	OUTPUT:
1311	RETVAL
1312		568
1313	void	569	void
1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	570	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1315	SV8 * pathname
1316	int flags
1317	int mode
1318	SV * callback
1319	PROTOTYPE: $$$;$	571	PROTOTYPE: $$$;$
1320	PPCODE:	572	PPCODE:
1321	{	573	{
1322	dREQ;	574	dREQ;
1323		575
1324	req->type = REQ_OPEN;	576	req->type = EIO_OPEN;
1325	req->sv1 = newSVsv (pathname);	577	req->sv1 = newSVsv (pathname);
1326	req->ptr1 = SvPVbyte_nolen (req->sv1);	578	req->ptr1 = SvPVbyte_nolen (req->sv1);
1327	req->int1 = flags;	579	req->int1 = flags;
1328	req->mode = mode;	580	req->int2 = mode;
1329		581
1330	REQ_SEND;	582	REQ_SEND;
1331	}	583	}
1332		584
1333	void	585	void
1334	aio_close (fh,callback=&PL_sv_undef)	586	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1335	SV * fh
1336	SV * callback
1337	PROTOTYPE: $;$	587	PROTOTYPE: $;$
1338	ALIAS:	588	ALIAS:
1339	aio_close = REQ_CLOSE
1340	aio_fsync = REQ_FSYNC	589	aio_fsync = EIO_FSYNC
1341	aio_fdatasync = REQ_FDATASYNC	590	aio_fdatasync = EIO_FDATASYNC
1342	PPCODE:	591	PPCODE:
1343	{	592	{
1344	dREQ;	593	dREQ;
1345		594
1346	req->type = ix;	595	req->type = ix;
1347	req->fh = newSVsv (fh);	596	req->sv1 = newSVsv (fh);
1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	597	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1349		598
1350	REQ_SEND (req);	599	REQ_SEND (req);
1351	}	600	}
1352		601
1353	void	602	void
		603	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		604	PROTOTYPE: $;$
		605	PPCODE:
		606	{
		607	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		608	dREQ;
		609
		610	if (close_pipe < 0)
		611	{
		612	int pipefd [2];
		613
		614	if (pipe (pipefd) < 0
		615	|| close (pipefd [1]) < 0
		616	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		617	abort (); /*D*/
		618
		619	close_pipe = pipefd [0];
		620	}
		621
		622	req->type = EIO_DUP2;
		623	req->int1 = close_pipe;
		624	req->sv2 = newSVsv (fh);
		625	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		626
		627	REQ_SEND (req);
		628	}
		629
		630	void
1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	631	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1355	SV * fh
1356	UV offset
1357	UV length
1358	SV8 * data
1359	UV dataoffset
1360	SV * callback
1361	ALIAS:	632	ALIAS:
1362	aio_read = REQ_READ	633	aio_read = EIO_READ
1363	aio_write = REQ_WRITE	634	aio_write = EIO_WRITE
1364	PROTOTYPE: $$$$$;$	635	PROTOTYPE: $$$$$;$
1365	PPCODE:	636	PPCODE:
1366	{	637	{
1367	STRLEN svlen;	638	STRLEN svlen;
1368	char *svptr = SvPVbyte (data, svlen);	639	char *svptr = SvPVbyte (data, svlen);
		640	UV len = SvUV (length);
1369		641
1370	SvUPGRADE (data, SVt_PV);	642	SvUPGRADE (data, SVt_PV);
1371	SvPOK_on (data);	643	SvPOK_on (data);
1372		644
1373	if (dataoffset < 0)	645	if (dataoffset < 0)
1374	dataoffset += svlen;	646	dataoffset += svlen;
1375		647
1376	if (dataoffset < 0 || dataoffset > svlen)	648	if (dataoffset < 0 || dataoffset > svlen)
1377	croak ("data offset outside of string");	649	croak ("dataoffset outside of data scalar");
1378		650
1379	if (ix == REQ_WRITE)	651	if (ix == EIO_WRITE)
1380	{	652	{
1381	/* write: check length and adjust. */	653	/* write: check length and adjust. */
1382	if (length < 0 || length + dataoffset > svlen)	654	if (!SvOK (length) || len + dataoffset > svlen)
1383	length = svlen - dataoffset;	655	len = svlen - dataoffset;
1384	}	656	}
1385	else	657	else
1386	{	658	{
1387	/* read: grow scalar as necessary */	659	/* read: grow scalar as necessary */
1388	svptr = SvGROW (data, length + dataoffset);	660	svptr = SvGROW (data, len + dataoffset + 1);
1389	}	661	}
1390		662
1391	if (length < 0)	663	if (len < 0)
1392	croak ("length must not be negative");	664	croak ("length must not be negative");
1393		665
1394	{	666	{
1395	dREQ;	667	dREQ;
1396		668
1397	req->type = ix;	669	req->type = ix;
1398	req->fh = newSVsv (fh);	670	req->sv1 = newSVsv (fh);
1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	671	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1400	: IoOFP (sv_2io (fh)));	672	: IoOFP (sv_2io (fh)));
1401	req->offs = offset;	673	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->size = length;	674	req->size = len;
1403	req->sv1 = SvREFCNT_inc (data);	675	req->sv2 = SvREFCNT_inc_NN (data);
1404	req->ptr1 = (char *)svptr + dataoffset;	676	req->ptr2 = (char *)svptr + dataoffset;
1405	req->stroffset = dataoffset;	677	req->stroffset = dataoffset;
1406		678
1407	if (!SvREADONLY (data))	679	if (!SvREADONLY (data))
1408	{	680	{
1409	SvREADONLY_on (data);	681	SvREADONLY_on (data);
1410	req->flags |= FLAG_SV1_RO_OFF;	682	req->flags |= FLAG_SV2_RO_OFF;
1411	}	683	}
1412		684
1413	REQ_SEND;	685	REQ_SEND;
1414	}	686	}
1415	}	687	}
1416		688
1417	void	689	void
1418	aio_readlink (path,callback=&PL_sv_undef)	690	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1419	SV8 * path
1420	SV * callback
1421	PROTOTYPE: $$;$	691	PROTOTYPE: $$;$
1422	PPCODE:	692	PPCODE:
1423	{	693	{
1424	SV *data;	694	SV *data;
1425	dREQ;	695	dREQ;
1426		696
1427	data = newSV (NAME_MAX);
1428	SvPOK_on (data);
1429
1430	req->type = REQ_READLINK;	697	req->type = EIO_READLINK;
1431	req->fh = newSVsv (path);	698	req->sv1 = newSVsv (path);
1432	req->ptr2 = SvPVbyte_nolen (req->fh);	699	req->ptr1 = SvPVbyte_nolen (req->sv1);
1433	req->sv1 = data;
1434	req->ptr1 = SvPVbyte_nolen (data);
1435		700
1436	REQ_SEND;	701	REQ_SEND;
1437	}	702	}
1438		703
1439	void	704	void
1440	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	705	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1441	SV * out_fh
1442	SV * in_fh
1443	UV in_offset
1444	UV length
1445	SV * callback
1446	PROTOTYPE: $$$$;$	706	PROTOTYPE: $$$$;$
1447	PPCODE:	707	PPCODE:
1448	{	708	{
1449	dREQ;	709	dREQ;
1450		710
1451	req->type = REQ_SENDFILE;	711	req->type = EIO_SENDFILE;
1452	req->fh = newSVsv (out_fh);	712	req->sv1 = newSVsv (out_fh);
1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	713	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1454	req->sv2 = newSVsv (in_fh);	714	req->sv2 = newSVsv (in_fh);
1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	715	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1456	req->offs = in_offset;	716	req->offs = SvVAL64 (in_offset);
1457	req->size = length;	717	req->size = length;
1458		718
1459	REQ_SEND;	719	REQ_SEND;
1460	}	720	}
1461		721
1462	void	722	void
1463	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	723	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1464	SV * fh
1465	UV offset
1466	IV length
1467	SV * callback
1468	PROTOTYPE: $$$;$	724	PROTOTYPE: $$$;$
1469	PPCODE:	725	PPCODE:
1470	{	726	{
1471	dREQ;	727	dREQ;
1472		728
1473	req->type = REQ_READAHEAD;	729	req->type = EIO_READAHEAD;
1474	req->fh = newSVsv (fh);	730	req->sv1 = newSVsv (fh);
1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1476	req->offs = offset;	732	req->offs = SvVAL64 (offset);
1477	req->size = length;	733	req->size = length;
1478		734
1479	REQ_SEND;	735	REQ_SEND;
1480	}	736	}
1481		737
1482	void	738	void
1483	aio_stat (fh_or_path,callback=&PL_sv_undef)	739	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1484	SV8 * fh_or_path
1485	SV * callback
1486	ALIAS:	740	ALIAS:
1487	aio_stat = REQ_STAT	741	aio_stat = EIO_STAT
1488	aio_lstat = REQ_LSTAT	742	aio_lstat = EIO_LSTAT
1489	PPCODE:	743	PPCODE:
1490	{	744	{
1491	dREQ;	745	dREQ;
1492		746
1493	req->ptr2 = malloc (sizeof (Stat_t));	747	req->sv1 = newSVsv (fh_or_path);
1494	if (!req->ptr2)
1495	{
1496	req_free (req);
1497	croak ("out of memory during aio_stat statdata allocation");
1498	}
1499		748
1500	req->flags |= FLAG_PTR2_FREE;	749	if (SvPOK (req->sv1))
1501
1502	if (SvPOK (fh_or_path))
1503	{	750	{
1504	req->type = ix;	751	req->type = ix;
1505	req->sv1 = newSVsv (fh_or_path);
1506	req->ptr1 = SvPVbyte_nolen (req->sv1);	752	req->ptr1 = SvPVbyte_nolen (req->sv1);
1507	}	753	}
1508	else	754	else
1509	{	755	{
1510	req->type = REQ_FSTAT;	756	req->type = EIO_FSTAT;
1511	req->fh = newSVsv (fh_or_path);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	757	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1513	}	758	}
1514		759
1515	REQ_SEND;	760	REQ_SEND;
1516	}	761	}
1517		762
1518	void	763	void
		764	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		765	PPCODE:
		766	{
		767	dREQ;
		768
		769	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		770	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		771	req->sv1 = newSVsv (fh_or_path);
		772
		773	if (SvPOK (req->sv1))
		774	{
		775	req->type = EIO_UTIME;
		776	req->ptr1 = SvPVbyte_nolen (req->sv1);
		777	}
		778	else
		779	{
		780	req->type = EIO_FUTIME;
		781	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		782	}
		783
		784	REQ_SEND;
		785	}
		786
		787	void
		788	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		789	PPCODE:
		790	{
		791	dREQ;
		792
		793	req->sv1 = newSVsv (fh_or_path);
		794	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		795
		796	if (SvPOK (req->sv1))
		797	{
		798	req->type = EIO_TRUNCATE;
		799	req->ptr1 = SvPVbyte_nolen (req->sv1);
		800	}
		801	else
		802	{
		803	req->type = EIO_FTRUNCATE;
		804	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		805	}
		806
		807	REQ_SEND;
		808	}
		809
		810	void
		811	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		812	ALIAS:
		813	aio_chmod = EIO_CHMOD
		814	aio_mkdir = EIO_MKDIR
		815	PPCODE:
		816	{
		817	dREQ;
		818
		819	req->int2 = mode;
		820	req->sv1 = newSVsv (fh_or_path);
		821
		822	if (SvPOK (req->sv1))
		823	{
		824	req->type = ix;
		825	req->ptr1 = SvPVbyte_nolen (req->sv1);
		826	}
		827	else
		828	{
		829	req->type = EIO_FCHMOD;
		830	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		831	}
		832
		833	REQ_SEND;
		834	}
		835
		836	void
		837	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		838	PPCODE:
		839	{
		840	dREQ;
		841
		842	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		843	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		844	req->sv1 = newSVsv (fh_or_path);
		845
		846	if (SvPOK (req->sv1))
		847	{
		848	req->type = EIO_CHOWN;
		849	req->ptr1 = SvPVbyte_nolen (req->sv1);
		850	}
		851	else
		852	{
		853	req->type = EIO_FCHOWN;
		854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		855	}
		856
		857	REQ_SEND;
		858	}
		859
		860	void
1519	aio_unlink (pathname,callback=&PL_sv_undef)	861	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1520	SV8 * pathname
1521	SV * callback
1522	ALIAS:	862	ALIAS:
1523	aio_unlink = REQ_UNLINK	863	aio_unlink = EIO_UNLINK
1524	aio_rmdir = REQ_RMDIR	864	aio_rmdir = EIO_RMDIR
1525	aio_readdir = REQ_READDIR	865	aio_readdir = EIO_READDIR
1526	PPCODE:	866	PPCODE:
1527	{	867	{
1528	dREQ;	868	dREQ;
1529		869
1530	req->type = ix;	870	req->type = ix;
…		…
1533		873
1534	REQ_SEND;	874	REQ_SEND;
1535	}	875	}
1536		876
1537	void	877	void
1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)	878	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1539	SV8 * oldpath
1540	SV8 * newpath
1541	SV * callback
1542	ALIAS:	879	ALIAS:
1543	aio_link = REQ_LINK	880	aio_link = EIO_LINK
1544	aio_symlink = REQ_SYMLINK	881	aio_symlink = EIO_SYMLINK
1545	aio_rename = REQ_RENAME	882	aio_rename = EIO_RENAME
1546	PPCODE:	883	PPCODE:
1547	{	884	{
1548	dREQ;	885	dREQ;
1549		886
1550	req->type = ix;	887	req->type = ix;
1551	req->fh = newSVsv (oldpath);	888	req->sv1 = newSVsv (oldpath);
1552	req->ptr2 = SvPVbyte_nolen (req->fh);
1553	req->sv1 = newSVsv (newpath);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);	889	req->ptr1 = SvPVbyte_nolen (req->sv1);
		890	req->sv2 = newSVsv (newpath);
		891	req->ptr2 = SvPVbyte_nolen (req->sv2);
1555		892
1556	REQ_SEND;	893	REQ_SEND;
1557	}	894	}
1558		895
1559	void	896	void
1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	897	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1561	SV8 * pathname
1562	SV * callback
1563	UV mode
1564	UV dev
1565	PPCODE:	898	PPCODE:
1566	{	899	{
1567	dREQ;	900	dREQ;
1568		901
1569	req->type = REQ_MKNOD;	902	req->type = EIO_MKNOD;
1570	req->sv1 = newSVsv (pathname);	903	req->sv1 = newSVsv (pathname);
1571	req->ptr1 = SvPVbyte_nolen (req->sv1);	904	req->ptr1 = SvPVbyte_nolen (req->sv1);
1572	req->mode = (mode_t)mode;	905	req->int2 = (mode_t)mode;
1573	req->offs = dev;	906	req->offs = dev;
1574		907
1575	REQ_SEND;	908	REQ_SEND;
1576	}	909	}
1577		910
1578	void	911	void
1579	aio_busy (delay,callback=&PL_sv_undef)	912	aio_busy (double delay, SV *callback=&PL_sv_undef)
1580	double delay
1581	SV * callback
1582	PPCODE:	913	PPCODE:
1583	{	914	{
1584	dREQ;	915	dREQ;
1585		916
1586	req->type = REQ_BUSY;	917	req->type = EIO_BUSY;
1587	req->int1 = delay < 0. ? 0 : delay;	918	req->nv1 = delay < 0. ? 0. : delay;
1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1589		919
1590	REQ_SEND;	920	REQ_SEND;
1591	}	921	}
1592		922
1593	void	923	void
1594	aio_group (callback=&PL_sv_undef)	924	aio_group (SV *callback=&PL_sv_undef)
1595	SV * callback
1596	PROTOTYPE: ;$	925	PROTOTYPE: ;$
1597	PPCODE:	926	PPCODE:
1598	{	927	{
1599	dREQ;	928	dREQ;
1600		929
1601	req->type = REQ_GROUP;	930	req->type = EIO_GROUP;
1602		931
1603	req_send (req);	932	req_submit (req);
1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));	933	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1605	}	934	}
1606		935
1607	void	936	void
1608	aio_nop (callback=&PL_sv_undef)	937	aio_nop (SV *callback=&PL_sv_undef)
1609	SV * callback	938	ALIAS:
		939	aio_nop = EIO_NOP
		940	aio_sync = EIO_SYNC
1610	PPCODE:	941	PPCODE:
1611	{	942	{
1612	dREQ;	943	dREQ;
1613		944
1614	req->type = REQ_NOP;	945	req->type = ix;
1615		946
1616	REQ_SEND;	947	REQ_SEND;
1617	}	948	}
1618		949
1619	int	950	int
1620	aioreq_pri (int pri = 0)	951	aioreq_pri (int pri = 0)
1621	PROTOTYPE: ;$	952	PROTOTYPE: ;$
1622	CODE:	953	CODE:
1623	RETVAL = next_pri - PRI_BIAS;	954	RETVAL = next_pri;
1624	if (items > 0)	955	if (items > 0)
1625	{	956	{
1626	if (pri < PRI_MIN) pri = PRI_MIN;	957	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1627	if (pri > PRI_MAX) pri = PRI_MAX;	958	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1628	next_pri = pri + PRI_BIAS;	959	next_pri = pri;
1629	}	960	}
1630	OUTPUT:	961	OUTPUT:
1631	RETVAL	962	RETVAL
1632		963
1633	void	964	void
1634	aioreq_nice (int nice = 0)	965	aioreq_nice (int nice = 0)
1635	CODE:	966	CODE:
1636	nice = next_pri - nice;	967	nice = next_pri - nice;
1637	if (nice < PRI_MIN) nice = PRI_MIN;	968	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1638	if (nice > PRI_MAX) nice = PRI_MAX;	969	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1639	next_pri = nice + PRI_BIAS;	970	next_pri = nice;
1640		971
1641	void	972	void
1642	flush ()	973	flush ()
1643	PROTOTYPE:	974	PROTOTYPE:
1644	CODE:	975	CODE:
1645	while (nreqs)	976	while (eio_nreqs ())
1646	{	977	{
1647	poll_wait ();	978	poll_wait ();
1648	poll_cb ();	979	poll_cb ();
1649	}	980	}
1650		981
…		…
1681		1012
1682	int	1013	int
1683	nreqs()	1014	nreqs()
1684	PROTOTYPE:	1015	PROTOTYPE:
1685	CODE:	1016	CODE:
1686	RETVAL = nreqs;	1017	RETVAL = eio_nreqs ();
1687	OUTPUT:	1018	OUTPUT:
1688	RETVAL	1019	RETVAL
1689		1020
1690	int	1021	int
1691	nready()	1022	nready()
1692	PROTOTYPE:	1023	PROTOTYPE:
1693	CODE:	1024	CODE:
1694	RETVAL = get_nready ();	1025	RETVAL = eio_nready ();
1695	OUTPUT:	1026	OUTPUT:
1696	RETVAL	1027	RETVAL
1697		1028
1698	int	1029	int
1699	npending()	1030	npending()
1700	PROTOTYPE:	1031	PROTOTYPE:
1701	CODE:	1032	CODE:
1702	RETVAL = get_npending ();	1033	RETVAL = eio_npending ();
1703	OUTPUT:	1034	OUTPUT:
1704	RETVAL	1035	RETVAL
1705		1036
1706	int	1037	int
1707	nthreads()	1038	nthreads()
1708	PROTOTYPE:	1039	PROTOTYPE:
1709	CODE:	1040	CODE:
1710	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1041	RETVAL = eio_nthreads ();
1711	RETVAL = started;
1712	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1713	OUTPUT:	1042	OUTPUT:
1714	RETVAL	1043	RETVAL
1715		1044
		1045	void _on_next_submit (SV *cb)
		1046	CODE:
		1047	SvREFCNT_dec (on_next_submit);
		1048	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1049
1716	PROTOTYPES: DISABLE	1050	PROTOTYPES: DISABLE
1717		1051
1718	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1052	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1719		1053
1720	void	1054	void
1721	cancel (aio_req_ornot req)	1055	cancel (aio_req_ornot req)
1722	CODE:	1056	CODE:
1723	req_cancel (req);	1057	eio_cancel (req);
1724		1058
1725	void	1059	void
1726	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1060	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1727	CODE:	1061	PPCODE:
		1062	{
		1063	if (GIMME_V != G_VOID)
		1064	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1065
		1066	if (items > 1)
		1067	{
		1068	SV *cb_cv = get_cb (callback);
		1069
1728	SvREFCNT_dec (req->callback);	1070	SvREFCNT_dec (req->callback);
1729	req->callback = newSVsv (callback);	1071	req->callback = SvREFCNT_inc (cb_cv);
		1072	}
		1073	}
1730		1074
1731	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1075	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1732		1076
1733	void	1077	void
1734	add (aio_req grp, ...)	1078	add (aio_req grp, ...)
1735	PPCODE:	1079	PPCODE:
1736	{	1080	{
1737	int i;	1081	int i;
1738	aio_req req;
1739		1082
1740	if (grp->int1 == 2)	1083	if (grp->int1 == 2)
1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1084	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1742		1085
1743	for (i = 1; i < items; ++i )	1086	for (i = 1; i < items; ++i )
1744	{	1087	{
		1088	aio_req req;
		1089
1745	if (GIMME_V != G_VOID)	1090	if (GIMME_V != G_VOID)
1746	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1091	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1747		1092
1748	req = SvAIO_REQ (ST (i));	1093	req = SvAIO_REQ (ST (i));
1749		1094
1750	if (req)	1095	if (req)
1751	{	1096	eio_grp_add (grp, req);
1752	++grp->size;
1753	req->grp = grp;
1754
1755	req->grp_prev = 0;
1756	req->grp_next = grp->grp_first;
1757
1758	if (grp->grp_first)
1759	grp->grp_first->grp_prev = req;
1760
1761	grp->grp_first = req;
1762	}
1763	}	1097	}
1764	}	1098	}
1765		1099
1766	void	1100	void
1767	cancel_subs (aio_req_ornot req)	1101	cancel_subs (aio_req_ornot req)
…		…
1792	grp->errorno = errorno;	1126	grp->errorno = errorno;
1793		1127
1794	void	1128	void
1795	limit (aio_req grp, int limit)	1129	limit (aio_req grp, int limit)
1796	CODE:	1130	CODE:
1797	grp->int2 = limit;	1131	eio_grp_limit (grp, limit);
1798	aio_grp_feed (grp);
1799		1132
1800	void	1133	void
1801	feed (aio_req grp, SV *callback=&PL_sv_undef)	1134	feed (aio_req grp, SV *callback=&PL_sv_undef)
1802	CODE:	1135	CODE:
1803	{	1136	{
…		…
1805	grp->sv2 = newSVsv (callback);	1138	grp->sv2 = newSVsv (callback);
1806		1139
1807	if (grp->int2 <= 0)	1140	if (grp->int2 <= 0)
1808	grp->int2 = 2;	1141	grp->int2 = 2;
1809		1142
1810	aio_grp_feed (grp);	1143	eio_grp_limit (grp, grp->int2);
1811	}	1144	}
1812		1145

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