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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.90 by root, Tue Oct 31 00:32:19 2006 UTC vs.
Revision 1.127 by root, Tue Sep 30 13:17:32 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) && SvOK (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 = SvREFCNT_inc (POPs);	270	symlen = snprintf (
		271	sym,
		272	sizeof (sym),
		273	"%s&=%d",
		274	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		275	req->result
		276	);
453		277
		278	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		279	fh = (SV *)gv;
		280	}
		281
454	PUSHMARK (SP);	282	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	283	}
457	break;	284	break;
458		285
459	case REQ_GROUP:	286	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	287	req->int1 = 2; /* mark group as finished */
461		288
462	if (req->sv1)	289	if (req->sv1)
463	{	290	{
464	int i;	291	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	295	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	296	PUSHs (*av_fetch (av, i, 0));
470	}	297	}
471	break;	298	break;
472		299
473	case REQ_NOP:	300	case EIO_NOP:
474	case REQ_BUSY:	301	case EIO_BUSY:
475	break;	302	break;
476		303
477	case REQ_READLINK:	304	case EIO_READLINK:
478	if (req->result > 0)	305	if (req->result > 0)
479	{	306	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480	SvCUR_set (req->sv1, req->result);
481	*SvEND (req->sv1) = 0;
482	PUSHs (req->sv1);
483	}
484	break;	307	break;
485		308
486	case REQ_STAT:	309	case EIO_STAT:
487	case REQ_LSTAT:	310	case EIO_LSTAT:
488	case REQ_FSTAT:	311	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	312	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
490	PL_laststatval = req->result;	313	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);	314	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	315	PUSHs (sv_2mortal (newSViv (req->result)));
493	break;	316	break;
494		317
495	case REQ_READ:	318	case EIO_READ:
496	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));
497	*SvEND (req->sv1) = 0;	320	*SvEND (req->sv2) = 0;
498	PUSHs (sv_2mortal (newSViv (req->result)));	321	PUSHs (sv_2mortal (newSViv (req->result)));
499	break;	322	break;
		323
		324	case EIO_DUP2:
		325	if (req->result > 0)
		326	req->result = 0;
		327	/* FALLTHROUGH */
500		328
501	default:	329	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	330	PUSHs (sv_2mortal (newSViv (req->result)));
503	break;	331	break;
504	}	332	}
505		333
506	errno = req->errorno;	334	errno = req->errorno;
507		335
508	PUTBACK;	336	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	337	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	SPAGAIN;	338	SPAGAIN;
511		339
512	FREETMPS;	340	FREETMPS;
513	LEAVE;	341	LEAVE;
		342
		343	PUTBACK;
514	}	344	}
515		345
516	if (req->grp)	346	return !!SvTRUE (ERRSV);
517	{
518	aio_req grp = req->grp;
519
520	/* unlink request */
521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524	if (grp->grp_first == req)
525	grp->grp_first = req->grp_next;
526
527	aio_grp_dec (grp);
528	}
529
530	if (SvTRUE (ERRSV))
531	{
532	req_free (req);
533	croak (0);
534	}
535	}	347	}
536		348
537	static void req_free (aio_req req)	349	static void req_destroy (aio_req req)
538	{	350	{
539	if (req->self)	351	if (req->self)
540	{	352	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	353	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	354	SvREFCNT_dec (req->self);
543	}	355	}
544		356
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	357	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	358	SvREFCNT_dec (req->sv2);
548	SvREFCNT_dec (req->callback);	359	SvREFCNT_dec (req->callback);
549		360
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	361	Safefree (req);
554	}	362	}
555		363
556	static void req_cancel_subs (aio_req grp)	364	static void req_cancel_subs (aio_req grp)
557	{	365	{
558	aio_req sub;	366	aio_req sub;
559		367
560	if (grp->type != REQ_GROUP)	368	if (grp->type != EIO_GROUP)
561	return;	369	return;
562		370
563	SvREFCNT_dec (grp->sv2);	371	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	372	grp->sv2 = 0;
565		373
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	374	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	375	}
569		376
570	static void req_cancel (aio_req req)	377	#ifdef USE_SOCKETS_AS_HANDLES
571	{	378	# define TO_SOCKET(x) (win32_get_osfhandle (x))
572	req->flags |= FLAG_CANCELLED;	379	#else
573		380	# define TO_SOCKET(x) (x)
574	req_cancel_subs (req);
575	}
576
577	static void *aio_proc(void *arg);
578
579	static void start_thread (void)
580	{
581	sigset_t fullsigset, oldsigset;
582	pthread_attr_t attr;
583
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	pthread_attr_init (&attr);
590	pthread_attr_setstacksize (&attr, STACKSIZE);
591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592	#ifdef PTHREAD_SCOPE_PROCESS
593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594	#endif	381	#endif
595		382
596	sigfillset (&fullsigset);	383	static void
		384	create_respipe (void)
		385	{
		386	int old_readfd = respipe [0];
597		387
598	LOCK (wrklock);	388	if (respipe [1] >= 0)
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	389	respipe_close (TO_SOCKET (respipe [1]));
600		390
601	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)
602	{	399	{
603	wrk->prev = &wrk_first;	400	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
604	wrk->next = wrk_first.next;	401	croak ("unable to initialize result pipe(2)");
605	wrk_first.next->prev = wrk;	402
606	wrk_first.next = wrk;	403	respipe_close (respipe [0]);
607	++started;	404	respipe [0] = old_readfd;
608	}	405	}
609	else
610	free (wrk);
611		406
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);	407	#ifdef _WIN32
613	UNLOCK (wrklock);	408	int arg = 1;
614	}	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)");
615		416
616	static void maybe_start_thread ()	417	respipe_osf [0] = TO_SOCKET (respipe [0]);
617	{	418	respipe_osf [1] = TO_SOCKET (respipe [1]);
618	if (get_nthreads () >= wanted)
619	return;
620
621	/* todo: maybe use idle here, but might be less exact */
622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623	return;
624
625	start_thread ();
626	}	419	}
627		420
628	static void req_send (aio_req req)
629	{
630	++nreqs;
631
632	LOCK (reqlock);
633	++nready;
634	reqq_push (&req_queue, req);
635	pthread_cond_signal (&reqwait);
636	UNLOCK (reqlock);
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	pthread_cond_signal (&reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	421	static void poll_wait (void)
683	{	422	{
684	fd_set rfd;	423	fd_set rfd;
685		424
686	while (nreqs)	425	while (eio_nreqs ())
687	{	426	{
688	int size;	427	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	428
		429	X_LOCK (reslock);
690	size = res_queue.size;	430	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	431	X_UNLOCK (reslock);
692		432
693	if (size)	433	if (size)
694	return;	434	return;
695		435
696	maybe_start_thread ();	436	etp_maybe_start_thread ();
697		437
698	FD_ZERO(&rfd);	438	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	439	FD_SET (respipe [0], &rfd);
700		440
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	441	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	442	}
703	}	443	}
704		444
705	static int poll_cb ()	445	static int poll_cb (void)
706	{	446	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	for (;;)	447	for (;;)
718	{	448	{
719	for (;;)	449	int res = eio_poll ();
720	{
721	maybe_start_thread ();
722		450
723	LOCK (reslock);	451	if (res > 0)
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{
728	--npending;
729
730	if (!res_queue.size)
731	{
732	/* read any signals sent by the worker threads */
733	char buf [32];
734	while (read (respipe [0], buf, 32) == 32)
735	;
736	}
737	}
738
739	UNLOCK (reslock);
740
741	if (!req)
742	break;
743
744	--nreqs;
745
746	if (req->type == REQ_GROUP && req->size)
747	{
748	req->int1 = 1; /* mark request as delayed */
749	continue;
750	}
751	else
752	{
753	req_invoke (req);
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;	452	croak (0);
		453
		454	if (!max_outstanding || max_outstanding > eio_nreqs ())
		455	return res;
774		456
775	poll_wait ();	457	poll_wait ();
776
777	++maxreqs;
778	}	458	}
779
780	return count;
781	}
782
783	static void create_pipe ()
784	{
785	if (pipe (respipe))
786	croak ("unable to initialize result pipe");
787
788	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790
791	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792	croak ("cannot set result pipe to nonblocking mode");
793	}
794
795	/*****************************************************************************/
796	/* work around various missing functions */
797
798	#if !HAVE_PREADWRITE
799	# define pread aio_pread
800	# define pwrite aio_pwrite
801
802	/*
803	* make our pread/pwrite safe against themselves, but not against
804	* normal read/write by using a mutex. slows down execution a lot,
805	* but that's your problem, not mine.
806	*/
807	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810	{
811	ssize_t res;
812	off_t ooffset;
813
814	LOCK (preadwritelock);
815	ooffset = lseek (fd, 0, SEEK_CUR);
816	lseek (fd, offset, SEEK_SET);
817	res = read (fd, buf, count);
818	lseek (fd, ooffset, SEEK_SET);
819	UNLOCK (preadwritelock);
820
821	return res;
822	}
823
824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825	{
826	ssize_t res;
827	off_t ooffset;
828
829	LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);
832	res = write (fd, buf, count);
833	lseek (fd, offset, SEEK_SET);
834	UNLOCK (preadwritelock);
835
836	return res;
837	}
838	#endif
839
840	#if !HAVE_FDATASYNC
841	# define fdatasync fsync
842	#endif
843
844	#if !HAVE_READAHEAD
845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848	{
849	dBUF;
850
851	while (count > 0)
852	{
853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855	pread (fd, aio_buf, len, offset);
856	offset += len;
857	count -= len;
858	}
859
860	errno = 0;
861	}
862
863	#endif
864
865	#if !HAVE_READDIR_R
866	# define readdir_r aio_readdir_r
867
868	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871	{
872	struct dirent *e;
873	int errorno;
874
875	LOCK (readdirlock);
876
877	e = readdir (dirp);
878	errorno = errno;
879
880	if (e)
881	{
882	*res = ent;
883	strcpy (ent->d_name, e->d_name);
884	}
885	else
886	*res = 0;
887
888	UNLOCK (readdirlock);
889
890	errno = errorno;
891	return e ? 0 : -1;
892	}
893	#endif
894
895	/* sendfile always needs emulation */
896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897	{
898	ssize_t res;
899
900	if (!count)
901	return 0;
902
903	#if HAVE_SENDFILE
904	# if __linux
905	res = sendfile (ofd, ifd, &offset, count);
906
907	# elif __freebsd
908	/*
909	* Of course, the freebsd sendfile is a dire hack with no thoughts
910	* wasted on making it similar to other I/O functions.
911	*/
912	{
913	off_t sbytes;
914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915
916	if (res < 0 && sbytes)
917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918	res = sbytes;
919	}
920
921	# elif __hpux
922	res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924	# elif __solaris
925	{
926	struct sendfilevec vec;
927	size_t sbytes;
928
929	vec.sfv_fd = ifd;
930	vec.sfv_flag = 0;
931	vec.sfv_off = offset;
932	vec.sfv_len = count;
933
934	res = sendfilev (ofd, &vec, 1, &sbytes);
935
936	if (res < 0 && sbytes)
937	res = sbytes;
938	}
939
940	# endif
941	#else
942	res = -1;
943	errno = ENOSYS;
944	#endif
945
946	if (res < 0
947	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948	#if __solaris
949	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
950	#endif
951	)
952	)
953	{
954	/* emulate sendfile. this is a major pain in the ass */
955	dBUF;
956
957	res = 0;
958
959	while (count)
960	{
961	ssize_t cnt;
962
963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965	if (cnt <= 0)
966	{
967	if (cnt && !res) res = -1;
968	break;
969	}
970
971	cnt = write (ofd, aio_buf, cnt);
972
973	if (cnt <= 0)
974	{
975	if (cnt && !res) res = -1;
976	break;
977	}
978
979	offset += cnt;
980	res += cnt;
981	count -= cnt;
982	}
983	}
984
985	return res;
986	}
987
988	/* read a full directory */
989	static void scandir_ (aio_req req, worker *self)
990	{
991	DIR *dirp;
992	union
993	{
994	struct dirent d;
995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996	} *u;
997	struct dirent *entp;
998	char *name, *names;
999	int memlen = 4096;
1000	int memofs = 0;
1001	int res = 0;
1002	int errorno;
1003
1004	LOCK (wrklock);
1005	self->dirp = dirp = opendir (req->ptr1);
1006	self->dbuf = u = malloc (sizeof (*u));
1007	req->flags |= FLAG_PTR2_FREE;
1008	req->ptr2 = names = malloc (memlen);
1009	UNLOCK (wrklock);
1010
1011	if (dirp && u && names)
1012	for (;;)
1013	{
1014	errno = 0;
1015	readdir_r (dirp, &u->d, &entp);
1016
1017	if (!entp)
1018	break;
1019
1020	name = entp->d_name;
1021
1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023	{
1024	int len = strlen (name) + 1;
1025
1026	res++;
1027
1028	while (memofs + len > memlen)
1029	{
1030	memlen *= 2;
1031	LOCK (wrklock);
1032	req->ptr2 = names = realloc (names, memlen);
1033	UNLOCK (wrklock);
1034
1035	if (!names)
1036	break;
1037	}
1038
1039	memcpy (names + memofs, name, len);
1040	memofs += len;
1041	}
1042	}
1043
1044	if (errno)
1045	res = -1;
1046
1047	req->result = res;
1048	}
1049
1050	/*****************************************************************************/
1051
1052	static void *aio_proc (void *thr_arg)
1053	{
1054	aio_req req;
1055	struct timespec ts;
1056	worker *self = (worker *)thr_arg;
1057
1058	/* try to distribute timeouts somewhat evenly */
1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060	* (1000000000UL / 1024UL);
1061
1062	for (;;)
1063	{
1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066	LOCK (reqlock);
1067
1068	for (;;)
1069	{
1070	self->req = req = reqq_shift (&req_queue);
1071
1072	if (req)
1073	break;
1074
1075	++idle;
1076
1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078	== ETIMEDOUT)
1079	{
1080	if (idle > max_idle)
1081	{
1082	--idle;
1083	UNLOCK (reqlock);
1084	LOCK (wrklock);
1085	--started;
1086	UNLOCK (wrklock);
1087	goto quit;
1088	}
1089
1090	/* we are allowed to idle, so do so without any timeout */
1091	pthread_cond_wait (&reqwait, &reqlock);
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093	}
1094
1095	--idle;
1096	}
1097
1098	--nready;
1099
1100	UNLOCK (reqlock);
1101
1102	errno = 0; /* strictly unnecessary */
1103
1104	if (!(req->flags & FLAG_CANCELLED))
1105	switch (req->type)
1106	{
1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118	case REQ_CLOSE: req->result = close (req->int1); break;
1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
1129	case REQ_READDIR: scandir_ (req, self); break;
1130
1131	case REQ_BUSY:
1132	{
1133	struct timeval tv;
1134
1135	tv.tv_sec = req->int1;
1136	tv.tv_usec = req->int2;
1137
1138	req->result = select (0, 0, 0, 0, &tv);
1139	}
1140
1141	case REQ_GROUP:
1142	case REQ_NOP:
1143	break;
1144
1145	case REQ_QUIT:
1146	goto quit;
1147
1148	default:
1149	req->result = ENOSYS;
1150	break;
1151	}
1152
1153	req->errorno = errno;
1154
1155	LOCK (reslock);
1156
1157	++npending;
1158
1159	if (!reqq_push (&res_queue, req))
1160	/* write a dummy byte to the pipe so fh becomes ready */
1161	write (respipe [1], &respipe, 1);
1162
1163	self->req = 0;
1164	worker_clear (self);
1165
1166	UNLOCK (reslock);
1167	}
1168
1169	quit:
1170	LOCK (wrklock);
1171	worker_free (self);
1172	UNLOCK (wrklock);
1173
1174	return 0;
1175	}
1176
1177	/*****************************************************************************/
1178
1179	static void atfork_prepare (void)
1180	{
1181	LOCK (wrklock);
1182	LOCK (reqlock);
1183	LOCK (reslock);
1184	#if !HAVE_PREADWRITE
1185	LOCK (preadwritelock);
1186	#endif
1187	#if !HAVE_READDIR_R
1188	LOCK (readdirlock);
1189	#endif
1190	}
1191
1192	static void atfork_parent (void)
1193	{
1194	#if !HAVE_READDIR_R
1195	UNLOCK (readdirlock);
1196	#endif
1197	#if !HAVE_PREADWRITE
1198	UNLOCK (preadwritelock);
1199	#endif
1200	UNLOCK (reslock);
1201	UNLOCK (reqlock);
1202	UNLOCK (wrklock);
1203	}	459	}
1204		460
1205	static void atfork_child (void)	461	static void atfork_child (void)
1206	{	462	{
1207	aio_req prv;
1208
1209	while (prv = reqq_shift (&req_queue))
1210	req_free (prv);
1211
1212	while (prv = reqq_shift (&res_queue))
1213	req_free (prv);
1214
1215	while (wrk_first.next != &wrk_first)
1216	{
1217	worker *wrk = wrk_first.next;
1218
1219	if (wrk->req)
1220	req_free (wrk->req);
1221
1222	worker_clear (wrk);
1223	worker_free (wrk);
1224	}
1225
1226	started = 0;
1227	idle = 0;
1228	nreqs = 0;
1229	nready = 0;
1230	npending = 0;
1231
1232	close (respipe [0]);
1233	close (respipe [1]);
1234	create_pipe ();	463	create_respipe ();
1235
1236	atfork_parent ();
1237	}	464	}
1238		465
1239	#define dREQ \	466	#define dREQ \
1240	aio_req req; \	467	aio_req req; \
1241	int req_pri = next_pri; \	468	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \	469	next_pri = EIO_PRI_DEFAULT; \
1243	\	470	\
1244	if (SvOK (callback) && !SvROK (callback)) \	471	if (SvOK (callback) && !SvROK (callback)) \
1245	croak ("callback must be undef or of reference type"); \	472	croak ("callback must be undef or of reference type"); \
1246	\	473	\
1247	Newz (0, req, 1, aio_cb); \	474	Newz (0, req, 1, eio_req); \
1248	if (!req) \	475	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \	476	croak ("out of memory during eio_req allocation"); \
1250	\	477	\
1251	req->callback = newSVsv (callback); \	478	req->callback = newSVsv (callback); \
1252	req->pri = req_pri	479	req->pri = req_pri
1253		480
1254	#define REQ_SEND \	481	#define REQ_SEND \
		482	PUTBACK; \
1255	req_send (req); \	483	req_submit (req); \
		484	SPAGAIN; \
1256	\	485	\
1257	if (GIMME_V != G_VOID) \	486	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));	487	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259		488
1260	MODULE = IO::AIO PACKAGE = IO::AIO	489	MODULE = IO::AIO PACKAGE = IO::AIO
1261		490
1262	PROTOTYPES: ENABLE	491	PROTOTYPES: ENABLE
1263		492
1264	BOOT:	493	BOOT:
1265	{	494	{
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	495	stash = gv_stashpv ("IO::AIO", 1);
1267		496
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	497	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	498	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	499	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	500	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	501	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		502	#ifndef _WIN32
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	503	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		504	#endif
1274		505
1275	create_pipe ();	506	create_respipe ();
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	507
		508	if (eio_init (want_poll, done_poll) < 0)
		509	croak ("IO::AIO: unable to initialise eio library");
		510
		511	/* atfork child called in fifo order, so before eio's handler */
		512	X_THREAD_ATFORK (0, 0, atfork_child);
1277	}	513	}
1278		514
1279	void	515	void
1280	max_poll_reqs (int nreqs)	516	max_poll_reqs (int nreqs)
1281	PROTOTYPE: $	517	PROTOTYPE: $
1282	CODE:	518	CODE:
1283	max_poll_reqs = nreqs;	519	eio_set_max_poll_reqs (nreqs);
1284		520
1285	void	521	void
1286	max_poll_time (double nseconds)	522	max_poll_time (double nseconds)
1287	PROTOTYPE: $	523	PROTOTYPE: $
1288	CODE:	524	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	525	eio_set_max_poll_time (nseconds);
1290		526
1291	void	527	void
1292	min_parallel (int nthreads)	528	min_parallel (int nthreads)
1293	PROTOTYPE: $	529	PROTOTYPE: $
		530	CODE:
		531	eio_set_min_parallel (nthreads);
1294		532
1295	void	533	void
1296	max_parallel (int nthreads)	534	max_parallel (int nthreads)
1297	PROTOTYPE: $	535	PROTOTYPE: $
		536	CODE:
		537	eio_set_max_parallel (nthreads);
1298		538
1299	void	539	void
1300	max_idle (int nthreads)	540	max_idle (int nthreads)
1301	PROTOTYPE: $	541	PROTOTYPE: $
1302	CODE:	542	CODE:
1303	set_max_idle (nthreads);	543	eio_set_max_idle (nthreads);
1304		544
1305	int	545	void
1306	max_outstanding (int maxreqs)	546	max_outstanding (int maxreqs)
1307	PROTOTYPE: $	547	PROTOTYPE: $
1308	CODE:	548	CODE:
1309	RETVAL = max_outstanding;
1310	max_outstanding = maxreqs;	549	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		550
1314	void	551	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	552	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$	553	PROTOTYPE: $$$;$
1321	PPCODE:	554	PPCODE:
1322	{	555	{
1323	dREQ;	556	dREQ;
1324		557
1325	req->type = REQ_OPEN;	558	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	559	req->sv1 = newSVsv (pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);	560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	561	req->int1 = flags;
1329	req->mode = mode;	562	req->int2 = mode;
1330		563
1331	REQ_SEND;	564	REQ_SEND;
1332	}	565	}
1333		566
1334	void	567	void
1335	aio_close (fh,callback=&PL_sv_undef)	568	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$	569	PROTOTYPE: $;$
1339	ALIAS:	570	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	571	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	572	aio_fdatasync = EIO_FDATASYNC
1343	PPCODE:	573	PPCODE:
1344	{	574	{
1345	dREQ;	575	dREQ;
1346		576
1347	req->type = ix;	577	req->type = ix;
1348	req->fh = newSVsv (fh);	578	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	579	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1350		580
1351	REQ_SEND (req);	581	REQ_SEND (req);
1352	}	582	}
1353		583
1354	void	584	void
		585	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		586	PROTOTYPE: $;$
		587	PPCODE:
		588	{
		589	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		590	dREQ;
		591
		592	if (close_pipe < 0)
		593	{
		594	int pipefd [2];
		595
		596	if (pipe (pipefd) < 0
		597	|| close (pipefd [1]) < 0
		598	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		599	abort (); /*D*/
		600
		601	close_pipe = pipefd [0];
		602	}
		603
		604	req->type = EIO_DUP2;
		605	req->int1 = close_pipe;
		606	req->sv2 = newSVsv (fh);
		607	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		608
		609	REQ_SEND (req);
		610	}
		611
		612	void
1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	613	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	614	ALIAS:
1363	aio_read = REQ_READ	615	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	616	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$	617	PROTOTYPE: $$$$$;$
1366	PPCODE:	618	PPCODE:
1367	{	619	{
1368	STRLEN svlen;	620	STRLEN svlen;
1369	char *svptr = SvPVbyte (data, svlen);	621	char *svptr = SvPVbyte (data, svlen);
		622	UV len = SvUV (length);
1370		623
1371	SvUPGRADE (data, SVt_PV);	624	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);	625	SvPOK_on (data);
1373		626
1374	if (dataoffset < 0)	627	if (dataoffset < 0)
1375	dataoffset += svlen;	628	dataoffset += svlen;
1376		629
1377	if (dataoffset < 0 || dataoffset > svlen)	630	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	631	croak ("dataoffset outside of data scalar");
1379		632
1380	if (ix == REQ_WRITE)	633	if (ix == EIO_WRITE)
1381	{	634	{
1382	/* write: check length and adjust. */	635	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	636	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	637	len = svlen - dataoffset;
1385	}	638	}
1386	else	639	else
1387	{	640	{
1388	/* read: grow scalar as necessary */	641	/* read: grow scalar as necessary */
1389	svptr = SvGROW (data, length + dataoffset);	642	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	643	}
1391		644
1392	if (length < 0)	645	if (len < 0)
1393	croak ("length must not be negative");	646	croak ("length must not be negative");
1394		647
1395	{	648	{
1396	dREQ;	649	dREQ;
1397		650
1398	req->type = ix;	651	req->type = ix;
1399	req->fh = newSVsv (fh);	652	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	653	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1401	: IoOFP (sv_2io (fh)));	654	: IoOFP (sv_2io (fh)));
1402	req->offs = offset;	655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1403	req->size = length;	656	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	657	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	658	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	659	req->stroffset = dataoffset;
1407		660
1408	if (!SvREADONLY (data))	661	if (!SvREADONLY (data))
1409	{	662	{
1410	SvREADONLY_on (data);	663	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	664	req->flags |= FLAG_SV2_RO_OFF;
1412	}	665	}
1413		666
1414	REQ_SEND;	667	REQ_SEND;
1415	}	668	}
1416	}	669	}
1417		670
1418	void	671	void
1419	aio_readlink (path,callback=&PL_sv_undef)	672	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1420	SV8 * path
1421	SV * callback
1422	PROTOTYPE: $$;$	673	PROTOTYPE: $$;$
1423	PPCODE:	674	PPCODE:
1424	{	675	{
1425	SV *data;	676	SV *data;
1426	dREQ;	677	dREQ;
1427		678
1428	data = newSV (NAME_MAX);
1429	SvPOK_on (data);
1430
1431	req->type = REQ_READLINK;	679	req->type = EIO_READLINK;
1432	req->fh = newSVsv (path);	680	req->sv1 = newSVsv (path);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);	681	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->sv1 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);
1436		682
1437	REQ_SEND;	683	REQ_SEND;
1438	}	684	}
1439		685
1440	void	686	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	687	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$	688	PROTOTYPE: $$$$;$
1448	PPCODE:	689	PPCODE:
1449	{	690	{
1450	dREQ;	691	dREQ;
1451		692
1452	req->type = REQ_SENDFILE;	693	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	694	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	695	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1455	req->sv2 = newSVsv (in_fh);	696	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	697	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1457	req->offs = in_offset;	698	req->offs = SvVAL64 (in_offset);
1458	req->size = length;	699	req->size = length;
1459		700
1460	REQ_SEND;	701	REQ_SEND;
1461	}	702	}
1462		703
1463	void	704	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	705	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$	706	PROTOTYPE: $$$;$
1470	PPCODE:	707	PPCODE:
1471	{	708	{
1472	dREQ;	709	dREQ;
1473		710
1474	req->type = REQ_READAHEAD;	711	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	712	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	713	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1477	req->offs = offset;	714	req->offs = SvVAL64 (offset);
1478	req->size = length;	715	req->size = length;
1479		716
1480	REQ_SEND;	717	REQ_SEND;
1481	}	718	}
1482		719
1483	void	720	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	721	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	722	ALIAS:
1488	aio_stat = REQ_STAT	723	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	724	aio_lstat = EIO_LSTAT
1490	PPCODE:	725	PPCODE:
1491	{	726	{
1492	dREQ;	727	dREQ;
1493		728
1494	req->ptr2 = malloc (sizeof (Stat_t));	729	req->sv1 = newSVsv (fh_or_path);
1495	if (!req->ptr2)
1496	{
1497	req_free (req);
1498	croak ("out of memory during aio_stat statdata allocation");
1499	}
1500		730
1501	req->flags |= FLAG_PTR2_FREE;	731	if (SvPOK (req->sv1))
1502
1503	if (SvPOK (fh_or_path))
1504	{	732	{
1505	req->type = ix;	733	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);	734	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}	735	}
1509	else	736	else
1510	{	737	{
1511	req->type = REQ_FSTAT;	738	req->type = EIO_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}	740	}
1515		741
1516	REQ_SEND;	742	REQ_SEND;
1517	}	743	}
1518		744
1519	void	745	void
		746	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		747	PPCODE:
		748	{
		749	dREQ;
		750
		751	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		752	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		753	req->sv1 = newSVsv (fh_or_path);
		754
		755	if (SvPOK (req->sv1))
		756	{
		757	req->type = EIO_UTIME;
		758	req->ptr1 = SvPVbyte_nolen (req->sv1);
		759	}
		760	else
		761	{
		762	req->type = EIO_FUTIME;
		763	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		764	}
		765
		766	REQ_SEND;
		767	}
		768
		769	void
		770	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		771	PPCODE:
		772	{
		773	dREQ;
		774
		775	req->sv1 = newSVsv (fh_or_path);
		776	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		777
		778	if (SvPOK (req->sv1))
		779	{
		780	req->type = EIO_TRUNCATE;
		781	req->ptr1 = SvPVbyte_nolen (req->sv1);
		782	}
		783	else
		784	{
		785	req->type = EIO_FTRUNCATE;
		786	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		787	}
		788
		789	REQ_SEND;
		790	}
		791
		792	void
		793	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		794	ALIAS:
		795	aio_chmod = EIO_CHMOD
		796	aio_mkdir = EIO_MKDIR
		797	PPCODE:
		798	{
		799	dREQ;
		800
		801	req->int2 = mode;
		802	req->sv1 = newSVsv (fh_or_path);
		803
		804	if (SvPOK (req->sv1))
		805	{
		806	req->type = ix;
		807	req->ptr1 = SvPVbyte_nolen (req->sv1);
		808	}
		809	else
		810	{
		811	req->type = EIO_FCHMOD;
		812	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		813	}
		814
		815	REQ_SEND;
		816	}
		817
		818	void
		819	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		820	PPCODE:
		821	{
		822	dREQ;
		823
		824	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		825	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		826	req->sv1 = newSVsv (fh_or_path);
		827
		828	if (SvPOK (req->sv1))
		829	{
		830	req->type = EIO_CHOWN;
		831	req->ptr1 = SvPVbyte_nolen (req->sv1);
		832	}
		833	else
		834	{
		835	req->type = EIO_FCHOWN;
		836	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		837	}
		838
		839	REQ_SEND;
		840	}
		841
		842	void
1520	aio_unlink (pathname,callback=&PL_sv_undef)	843	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	844	ALIAS:
1524	aio_unlink = REQ_UNLINK	845	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	846	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	847	aio_readdir = EIO_READDIR
1527	PPCODE:	848	PPCODE:
1528	{	849	{
1529	dREQ;	850	dREQ;
1530		851
1531	req->type = ix;	852	req->type = ix;
…		…
1534		855
1535	REQ_SEND;	856	REQ_SEND;
1536	}	857	}
1537		858
1538	void	859	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	860	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	861	ALIAS:
1544	aio_link = REQ_LINK	862	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	863	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	864	aio_rename = EIO_RENAME
1547	PPCODE:	865	PPCODE:
1548	{	866	{
1549	dREQ;	867	dREQ;
1550		868
1551	req->type = ix;	869	req->type = ix;
1552	req->fh = newSVsv (oldpath);	870	req->sv1 = newSVsv (oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1554	req->sv1 = newSVsv (newpath);
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
		872	req->sv2 = newSVsv (newpath);
		873	req->ptr2 = SvPVbyte_nolen (req->sv2);
1556		874
1557	REQ_SEND;	875	REQ_SEND;
1558	}	876	}
1559		877
1560	void	878	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	879	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562	SV8 * pathname
1563	SV * callback
1564	UV mode
1565	UV dev
1566	PPCODE:	880	PPCODE:
1567	{	881	{
1568	dREQ;	882	dREQ;
1569		883
1570	req->type = REQ_MKNOD;	884	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);	885	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	886	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	887	req->int2 = (mode_t)mode;
1574	req->offs = dev;	888	req->offs = dev;
1575		889
1576	REQ_SEND;	890	REQ_SEND;
1577	}	891	}
1578		892
1579	void	893	void
1580	aio_busy (delay,callback=&PL_sv_undef)	894	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	895	PPCODE:
1584	{	896	{
1585	dREQ;	897	dREQ;
1586		898
1587	req->type = REQ_BUSY;	899	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	900	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		901
1591	REQ_SEND;	902	REQ_SEND;
1592	}	903	}
1593		904
1594	void	905	void
1595	aio_group (callback=&PL_sv_undef)	906	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$	907	PROTOTYPE: ;$
1598	PPCODE:	908	PPCODE:
1599	{	909	{
1600	dREQ;	910	dREQ;
1601		911
1602	req->type = REQ_GROUP;	912	req->type = EIO_GROUP;
1603		913
1604	req_send (req);	914	req_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	915	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1606	}	916	}
1607		917
1608	void	918	void
1609	aio_nop (callback=&PL_sv_undef)	919	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	920	ALIAS:
		921	aio_nop = EIO_NOP
		922	aio_sync = EIO_SYNC
1611	PPCODE:	923	PPCODE:
1612	{	924	{
1613	dREQ;	925	dREQ;
1614		926
1615	req->type = REQ_NOP;	927	req->type = ix;
1616		928
1617	REQ_SEND;	929	REQ_SEND;
1618	}	930	}
1619		931
1620	int	932	int
1621	aioreq_pri (int pri = 0)	933	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$	934	PROTOTYPE: ;$
1623	CODE:	935	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	936	RETVAL = next_pri;
1625	if (items > 0)	937	if (items > 0)
1626	{	938	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	939	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	940	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	941	next_pri = pri;
1630	}	942	}
1631	OUTPUT:	943	OUTPUT:
1632	RETVAL	944	RETVAL
1633		945
1634	void	946	void
1635	aioreq_nice (int nice = 0)	947	aioreq_nice (int nice = 0)
1636	CODE:	948	CODE:
1637	nice = next_pri - nice;	949	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	950	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	951	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	952	next_pri = nice;
1641		953
1642	void	954	void
1643	flush ()	955	flush ()
1644	PROTOTYPE:	956	PROTOTYPE:
1645	CODE:	957	CODE:
1646	while (nreqs)	958	while (eio_nreqs ())
1647	{	959	{
1648	poll_wait ();	960	poll_wait ();
1649	poll_cb (0);	961	poll_cb ();
1650	}	962	}
1651		963
1652	void	964	int
1653	poll()	965	poll()
1654	PROTOTYPE:	966	PROTOTYPE:
1655	CODE:	967	CODE:
1656	if (nreqs)
1657	{
1658	poll_wait ();	968	poll_wait ();
1659	poll_cb (0);	969	RETVAL = poll_cb ();
1660	}	970	OUTPUT:
		971	RETVAL
1661		972
1662	int	973	int
1663	poll_fileno()	974	poll_fileno()
1664	PROTOTYPE:	975	PROTOTYPE:
1665	CODE:	976	CODE:
…		…
1677		988
1678	void	989	void
1679	poll_wait()	990	poll_wait()
1680	PROTOTYPE:	991	PROTOTYPE:
1681	CODE:	992	CODE:
1682	if (nreqs)
1683	poll_wait ();	993	poll_wait ();
1684		994
1685	int	995	int
1686	nreqs()	996	nreqs()
1687	PROTOTYPE:	997	PROTOTYPE:
1688	CODE:	998	CODE:
1689	RETVAL = nreqs;	999	RETVAL = eio_nreqs ();
1690	OUTPUT:	1000	OUTPUT:
1691	RETVAL	1001	RETVAL
1692		1002
1693	int	1003	int
1694	nready()	1004	nready()
1695	PROTOTYPE:	1005	PROTOTYPE:
1696	CODE:	1006	CODE:
1697	RETVAL = get_nready ();	1007	RETVAL = eio_nready ();
1698	OUTPUT:	1008	OUTPUT:
1699	RETVAL	1009	RETVAL
1700		1010
1701	int	1011	int
1702	npending()	1012	npending()
1703	PROTOTYPE:	1013	PROTOTYPE:
1704	CODE:	1014	CODE:
1705	RETVAL = get_npending ();	1015	RETVAL = eio_npending ();
1706	OUTPUT:	1016	OUTPUT:
1707	RETVAL	1017	RETVAL
1708		1018
1709	int	1019	int
1710	nthreads()	1020	nthreads()
1711	PROTOTYPE:	1021	PROTOTYPE:
1712	CODE:	1022	CODE:
1713	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1023	RETVAL = eio_nthreads ();
1714	RETVAL = started;
1715	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1716	OUTPUT:	1024	OUTPUT:
1717	RETVAL	1025	RETVAL
1718		1026
		1027	void _on_next_submit (SV *cb)
		1028	CODE:
		1029	SvREFCNT_dec (on_next_submit);
		1030	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1031
1719	PROTOTYPES: DISABLE	1032	PROTOTYPES: DISABLE
1720		1033
1721	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1034	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1722		1035
1723	void	1036	void
1724	cancel (aio_req_ornot req)	1037	cancel (aio_req_ornot req)
1725	CODE:	1038	CODE:
1726	req_cancel (req);	1039	eio_cancel (req);
1727		1040
1728	void	1041	void
1729	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1042	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1730	CODE:	1043	CODE:
1731	SvREFCNT_dec (req->callback);	1044	SvREFCNT_dec (req->callback);
…		…
1736	void	1049	void
1737	add (aio_req grp, ...)	1050	add (aio_req grp, ...)
1738	PPCODE:	1051	PPCODE:
1739	{	1052	{
1740	int i;	1053	int i;
1741	aio_req req;
1742		1054
1743	if (grp->int1 == 2)	1055	if (grp->int1 == 2)
1744	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1056	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1745		1057
1746	for (i = 1; i < items; ++i )	1058	for (i = 1; i < items; ++i )
1747	{	1059	{
		1060	aio_req req;
		1061
1748	if (GIMME_V != G_VOID)	1062	if (GIMME_V != G_VOID)
1749	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1063	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1750		1064
1751	req = SvAIO_REQ (ST (i));	1065	req = SvAIO_REQ (ST (i));
1752		1066
1753	if (req)	1067	if (req)
1754	{	1068	eio_grp_add (grp, req);
1755	++grp->size;
1756	req->grp = grp;
1757
1758	req->grp_prev = 0;
1759	req->grp_next = grp->grp_first;
1760
1761	if (grp->grp_first)
1762	grp->grp_first->grp_prev = req;
1763
1764	grp->grp_first = req;
1765	}
1766	}	1069	}
1767	}	1070	}
1768		1071
1769	void	1072	void
1770	cancel_subs (aio_req_ornot req)	1073	cancel_subs (aio_req_ornot req)
…		…
1795	grp->errorno = errorno;	1098	grp->errorno = errorno;
1796		1099
1797	void	1100	void
1798	limit (aio_req grp, int limit)	1101	limit (aio_req grp, int limit)
1799	CODE:	1102	CODE:
1800	grp->int2 = limit;	1103	eio_grp_limit (grp, limit);
1801	aio_grp_feed (grp);
1802		1104
1803	void	1105	void
1804	feed (aio_req grp, SV *callback=&PL_sv_undef)	1106	feed (aio_req grp, SV *callback=&PL_sv_undef)
1805	CODE:	1107	CODE:
1806	{	1108	{
…		…
1808	grp->sv2 = newSVsv (callback);	1110	grp->sv2 = newSVsv (callback);
1809		1111
1810	if (grp->int2 <= 0)	1112	if (grp->int2 <= 0)
1811	grp->int2 = 2;	1113	grp->int2 = 2;
1812		1114
1813	aio_grp_feed (grp);	1115	eio_grp_limit (grp, grp->int2);
1814	}	1116	}
1815		1117

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