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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.84 by root, Sat Oct 28 01:24:19 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 WORDREAD_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDREAD_UNSAFE 0
76	# else
77	# define WORDREAD_UNSAFE 1
78	# endif
79	#endif
80		97
81	/* buffer size for various temporary buffers */	98	static HV *stash;
82	#define AIO_BUFSIZE 65536	99	typedef SV SV8; /* byte-sv, used for argument-checking */
83
84	#define dBUF \
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	enum {
93	REQ_QUIT,
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};
105		100
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		103
109	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;	105	SV *callback; \
114	SV *fh, *fh2;	106	SV *sv1, *sv2; \
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;	107	STRLEN stroffset; \
122	int type;	108	SV *self;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126		109
127	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
128	unsigned char pri;
129		111
130	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
132	} 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)
133		120
134	enum {	121	enum {
135	FLAG_CANCELLED = 0x01,	122	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
136	};	123	};
137		124
		125	#include "libeio/eio.c"
		126
138	typedef aio_cb *aio_req;	127	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	128	typedef eio_req *aio_req_ornot;
140		129
141	enum {	130	static SV *on_next_submit;
142	PRI_MIN = -4,	131	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	132	static int max_outstanding;
144		133
145	DEFAULT_PRI = 0,	134	static int respipe_osf [2], respipe [2] = { -1, -1 };
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		135
150	static int next_pri = DEFAULT_PRI + PRI_BIAS;
151
152	static unsigned int started, idle, wanted;
153
154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
156	#else
157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
158	#endif
159
160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
162
163	/* worker threads management */
164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
165
166	typedef struct worker {
167	/* locked by wrklock */
168	struct worker *prev, *next;
169
170	pthread_t tid;
171
172	/* locked by reslock, reqlock or wrklock */
173	aio_req req; /* currently processed request */
174	void *dbuf;
175	DIR *dirp;
176	} worker;
177
178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
179
180	static void worker_clear (worker *wrk)
181	{
182	if (wrk->dirp)
183	{
184	closedir (wrk->dirp);
185	wrk->dirp = 0;
186	}
187
188	if (wrk->dbuf)
189	{
190	free (wrk->dbuf);
191	wrk->dbuf = 0;
192	}
193	}
194
195	static void worker_free (worker *wrk)
196	{
197	wrk->next->prev = wrk->prev;
198	wrk->prev->next = wrk->next;
199
200	free (wrk);
201	}
202
203	static volatile unsigned int nreqs, nready, npending;
204	static volatile unsigned int max_idle = 4;
205	static volatile unsigned int max_outstanding = 0xffffffff;
206	static int respipe [2];
207
208	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
209	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
210	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
211
212	#if WORDREAD_UNSAFE
213
214	static unsigned int get_nready ()
215	{
216	unsigned int retval;
217
218	LOCK (reqlock);
219	retval = nready;
220	UNLOCK (reqlock);
221
222	return retval;
223	}
224
225	static unsigned int get_npending ()
226	{
227	unsigned int retval;
228
229	LOCK (reslock);
230	retval = npending;
231	UNLOCK (reslock);
232
233	return retval;
234	}
235
236	#else
237
238	# define get_nready() nready
239	# define get_npending() npending
240
241	#endif
242
243	/*
244	* a somewhat faster data structure might be nice, but
245	* with 8 priorities this actually needs <20 insns
246	* per shift, the most expensive operation.
247	*/
248	typedef struct {
249	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
250	int size;
251	} reqq;
252
253	static reqq req_queue;
254	static reqq res_queue;
255
256	int reqq_push (reqq *q, aio_req req)
257	{
258	int pri = req->pri;
259	req->next = 0;
260
261	if (q->qe[pri])
262	{
263	q->qe[pri]->next = req;
264	q->qe[pri] = req;
265	}
266	else
267	q->qe[pri] = q->qs[pri] = req;
268
269	return q->size++;
270	}
271
272	aio_req reqq_shift (reqq *q)
273	{
274	int pri;
275
276	if (!q->size)
277	return 0;
278
279	--q->size;
280
281	for (pri = NUM_PRI; pri--; )
282	{
283	aio_req req = q->qs[pri];
284
285	if (req)
286	{
287	if (!(q->qs[pri] = req->next))
288	q->qe[pri] = 0;
289
290	return req;
291	}
292	}
293
294	abort ();
295	}
296
297	static int poll_cb (int max);
298	static void req_invoke (aio_req req);
299	static void req_free (aio_req req);	136	static void req_destroy (aio_req req);
300	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	}
301		152
302	/* must be called at most once */	153	/* must be called at most once */
303	static SV *req_sv (aio_req req, const char *klass)	154	static SV *req_sv (aio_req req, const char *klass)
304	{	155	{
305	if (!req->self)	156	if (!req->self)
…		…
323	return mg ? (aio_req)mg->mg_ptr : 0;	174	return mg ? (aio_req)mg->mg_ptr : 0;
324	}	175	}
325		176
326	static void aio_grp_feed (aio_req grp)	177	static void aio_grp_feed (aio_req grp)
327	{	178	{
328	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	179	if (grp->sv2 && SvOK (grp->sv2))
329	{	180	{
330	int old_len = grp->length;
331
332	if (grp->fh2 && SvOK (grp->fh2))
333	{
334	dSP;	181	dSP;
335		182
336	ENTER;	183	ENTER;
337	SAVETMPS;	184	SAVETMPS;
338	PUSHMARK (SP);	185	PUSHMARK (SP);
339	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	186	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
340	PUTBACK;	187	PUTBACK;
341	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	188	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342	SPAGAIN;	189	SPAGAIN;
343	FREETMPS;	190	FREETMPS;
344	LEAVE;	191	LEAVE;
345	}
346
347	/* stop if no progress has been made */
348	if (old_len == grp->length)
349	{
350	SvREFCNT_dec (grp->fh2);
351	grp->fh2 = 0;
352	break;
353	}
354	}	192	}
355	}	193	}
356		194
357	static void aio_grp_dec (aio_req grp)	195	static void req_submit (eio_req *req)
358	{	196	{
359	--grp->length;	197	eio_submit (req);
360		198
361	/* call feeder, if applicable */	199	if (expect_false (on_next_submit))
362	aio_grp_feed (grp);
363
364	/* finish, if done */
365	if (!grp->length && grp->fd)
366	{	200	{
367	req_invoke (grp);	201	dSP;
368	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);
369	}	209	}
370	}	210	}
371		211
372	static void req_invoke (aio_req req)	212	static int req_invoke (eio_req *req)
373	{	213	{
374	dSP;	214	dSP;
375		215
		216	if (req->flags & FLAG_SV2_RO_OFF)
		217	SvREADONLY_off (req->sv2);
		218
376	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	219	if (!EIO_CANCELLED (req) && SvOK (req->callback))
377	{	220	{
378	ENTER;	221	ENTER;
379	SAVETMPS;	222	SAVETMPS;
380	PUSHMARK (SP);	223	PUSHMARK (SP);
381	EXTEND (SP, 1);	224	EXTEND (SP, 1);
382		225
383	switch (req->type)	226	switch (req->type)
384	{	227	{
385	case REQ_READDIR:	228	case EIO_READDIR:
386	{	229	{
387	SV *rv = &PL_sv_undef;	230	SV *rv = &PL_sv_undef;
388		231
389	if (req->result >= 0)	232	if (req->result >= 0)
390	{	233	{
391	int i;	234	int i;
392	char *buf = req->data2ptr;	235	char *buf = req->ptr2;
393	AV *av = newAV ();	236	AV *av = newAV ();
394		237
395	av_extend (av, req->result - 1);	238	av_extend (av, req->result - 1);
396		239
397	for (i = 0; i < req->result; ++i)	240	for (i = 0; i < req->result; ++i)
…		…
407		250
408	PUSHs (rv);	251	PUSHs (rv);
409	}	252	}
410	break;	253	break;
411		254
412	case REQ_OPEN:	255	case EIO_OPEN:
413	{	256	{
414	/* convert fd to fh */	257	/* convert fd to fh */
415	SV *fh;	258	SV *fh = &PL_sv_undef;
416		259
417	PUSHs (sv_2mortal (newSViv (req->result)));	260	if (req->result >= 0)
418	PUTBACK;	261	{
419	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	262	GV *gv = (GV *)sv_newmortal ();
420	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);
421		269
422	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	);
423		277
		278	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		279	fh = (SV *)gv;
		280	}
		281
424	PUSHMARK (SP);	282	PUSHs (fh);
425	XPUSHs (sv_2mortal (fh));
426	}	283	}
427	break;	284	break;
428		285
429	case REQ_GROUP:	286	case EIO_GROUP:
430	req->fd = 2; /* mark group as finished */	287	req->int1 = 2; /* mark group as finished */
431		288
432	if (req->data)	289	if (req->sv1)
433	{	290	{
434	int i;	291	int i;
435	AV *av = (AV *)req->data;	292	AV *av = (AV *)req->sv1;
436		293
437	EXTEND (SP, AvFILL (av) + 1);	294	EXTEND (SP, AvFILL (av) + 1);
438	for (i = 0; i <= AvFILL (av); ++i)	295	for (i = 0; i <= AvFILL (av); ++i)
439	PUSHs (*av_fetch (av, i, 0));	296	PUSHs (*av_fetch (av, i, 0));
440	}	297	}
441	break;	298	break;
442		299
443	case REQ_NOP:	300	case EIO_NOP:
444	case REQ_BUSY:	301	case EIO_BUSY:
445	break;	302	break;
		303
		304	case EIO_READLINK:
		305	if (req->result > 0)
		306	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		307	break;
		308
		309	case EIO_STAT:
		310	case EIO_LSTAT:
		311	case EIO_FSTAT:
		312	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		313	PL_laststatval = req->result;
		314	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		315	PUSHs (sv_2mortal (newSViv (req->result)));
		316	break;
		317
		318	case EIO_READ:
		319	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		320	*SvEND (req->sv2) = 0;
		321	PUSHs (sv_2mortal (newSViv (req->result)));
		322	break;
		323
		324	case EIO_DUP2:
		325	if (req->result > 0)
		326	req->result = 0;
		327	/* FALLTHROUGH */
446		328
447	default:	329	default:
448	PUSHs (sv_2mortal (newSViv (req->result)));	330	PUSHs (sv_2mortal (newSViv (req->result)));
449	break;	331	break;
450	}	332	}
451		333
452	errno = req->errorno;	334	errno = req->errorno;
453		335
454	PUTBACK;	336	PUTBACK;
455	call_sv (req->callback, G_VOID | G_EVAL);	337	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456	SPAGAIN;	338	SPAGAIN;
457		339
458	FREETMPS;	340	FREETMPS;
459	LEAVE;	341	LEAVE;
		342
		343	PUTBACK;
460	}	344	}
461		345
462	if (req->grp)	346	return !!SvTRUE (ERRSV);
463	{
464	aio_req grp = req->grp;
465
466	/* unlink request */
467	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
468	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
469
470	if (grp->grp_first == req)
471	grp->grp_first = req->grp_next;
472
473	aio_grp_dec (grp);
474	}
475
476	if (SvTRUE (ERRSV))
477	{
478	req_free (req);
479	croak (0);
480	}
481	}	347	}
482		348
483	static void req_free (aio_req req)	349	static void req_destroy (aio_req req)
484	{	350	{
485	if (req->self)	351	if (req->self)
486	{	352	{
487	sv_unmagic (req->self, PERL_MAGIC_ext);	353	sv_unmagic (req->self, PERL_MAGIC_ext);
488	SvREFCNT_dec (req->self);	354	SvREFCNT_dec (req->self);
489	}	355	}
490		356
491	SvREFCNT_dec (req->data);
492	SvREFCNT_dec (req->fh);	357	SvREFCNT_dec (req->sv1);
493	SvREFCNT_dec (req->fh2);	358	SvREFCNT_dec (req->sv2);
494	SvREFCNT_dec (req->callback);	359	SvREFCNT_dec (req->callback);
495	Safefree (req->statdata);
496
497	if (req->type == REQ_READDIR)
498	free (req->data2ptr);
499		360
500	Safefree (req);	361	Safefree (req);
501	}	362	}
502		363
503	static void req_cancel_subs (aio_req grp)	364	static void req_cancel_subs (aio_req grp)
504	{	365	{
505	aio_req sub;	366	aio_req sub;
506		367
507	if (grp->type != REQ_GROUP)	368	if (grp->type != EIO_GROUP)
508	return;	369	return;
509		370
510	SvREFCNT_dec (grp->fh2);	371	SvREFCNT_dec (grp->sv2);
511	grp->fh2 = 0;	372	grp->sv2 = 0;
512		373
513	for (sub = grp->grp_first; sub; sub = sub->grp_next)	374	eio_grp_cancel (grp);
514	req_cancel (sub);
515	}	375	}
516		376
517	static void req_cancel (aio_req req)	377	#ifdef USE_SOCKETS_AS_HANDLES
518	{	378	# define TO_SOCKET(x) (win32_get_osfhandle (x))
519	req->flags |= FLAG_CANCELLED;	379	#else
520		380	# define TO_SOCKET(x) (x)
521	req_cancel_subs (req);
522	}
523
524	static void *aio_proc(void *arg);
525
526	static void start_thread (void)
527	{
528	sigset_t fullsigset, oldsigset;
529	pthread_attr_t attr;
530
531	worker *wrk = calloc (1, sizeof (worker));
532
533	if (!wrk)
534	croak ("unable to allocate worker thread data");
535
536	pthread_attr_init (&attr);
537	pthread_attr_setstacksize (&attr, STACKSIZE);
538	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
539	#ifdef PTHREAD_SCOPE_PROCESS
540	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
541	#endif	381	#endif
542		382
543	sigfillset (&fullsigset);	383	static void
		384	create_respipe (void)
		385	{
		386	int old_readfd = respipe [0];
544		387
545	LOCK (wrklock);	388	if (respipe [1] >= 0)
546	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	389	respipe_close (TO_SOCKET (respipe [1]));
547		390
548	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)
549	{	399	{
550	wrk->prev = &wrk_first;	400	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
551	wrk->next = wrk_first.next;	401	croak ("unable to initialize result pipe(2)");
552	wrk_first.next->prev = wrk;	402
553	wrk_first.next = wrk;	403	respipe_close (respipe [0]);
554	++started;	404	respipe [0] = old_readfd;
555	}	405	}
556	else
557	free (wrk);
558		406
559	sigprocmask (SIG_SETMASK, &oldsigset, 0);	407	#ifdef _WIN32
560	UNLOCK (wrklock);	408	int arg = 1;
561	}	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)");
562		416
563	static void maybe_start_thread ()	417	respipe_osf [0] = TO_SOCKET (respipe [0]);
564	{	418	respipe_osf [1] = TO_SOCKET (respipe [1]);
565	if (started >= wanted)
566	return;
567
568	/* todo: maybe use idle here, but might be less exact */
569	if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
570	return;
571
572	start_thread ();
573	}	419	}
574		420
575	static void req_send (aio_req req)
576	{
577	++nreqs;
578
579	LOCK (reqlock);
580	++nready;
581	reqq_push (&req_queue, req);
582	pthread_cond_signal (&reqwait);
583	UNLOCK (reqlock);
584
585	maybe_start_thread ();
586	}
587
588	static void end_thread (void)
589	{
590	aio_req req;
591
592	Newz (0, req, 1, aio_cb);
593
594	req->type = REQ_QUIT;
595	req->pri = PRI_MAX + PRI_BIAS;
596
597	LOCK (reqlock);
598	reqq_push (&req_queue, req);
599	pthread_cond_signal (&reqwait);
600	UNLOCK (reqlock);
601
602	LOCK (wrklock);
603	--started;
604	UNLOCK (wrklock);
605	}
606
607	static void min_parallel (int nthreads)
608	{
609	if (wanted < nthreads)
610	wanted = nthreads;
611	}
612
613	static void max_parallel (int nthreads)
614	{
615	if (wanted > nthreads)
616	wanted = nthreads;
617
618	while (started > wanted)
619	end_thread ();
620	}
621
622	static void poll_wait ()	421	static void poll_wait (void)
623	{	422	{
624	fd_set rfd;	423	fd_set rfd;
625		424
626	while (nreqs)	425	while (eio_nreqs ())
627	{	426	{
628	int size;	427	int size;
629	if (WORDREAD_UNSAFE) LOCK (reslock);	428
		429	X_LOCK (reslock);
630	size = res_queue.size;	430	size = res_queue.size;
631	if (WORDREAD_UNSAFE) UNLOCK (reslock);	431	X_UNLOCK (reslock);
632		432
633	if (size)	433	if (size)
634	return;	434	return;
635		435
636	maybe_start_thread ();	436	etp_maybe_start_thread ();
637		437
638	FD_ZERO(&rfd);	438	FD_ZERO (&rfd);
639	FD_SET(respipe [0], &rfd);	439	FD_SET (respipe [0], &rfd);
640		440
641	select (respipe [0] + 1, &rfd, 0, 0, 0);	441	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	442	}
643	}	443	}
644		444
645	static int poll_cb (int max)	445	static int poll_cb (void)
646	{	446	{
647	dSP;
648	int count = 0;
649	int do_croak = 0;
650	aio_req req;
651
652	for (;;)	447	for (;;)
653	{	448	{
654	while (max <= 0 || count < max)	449	int res = eio_poll ();
655	{
656	maybe_start_thread ();
657		450
658	LOCK (reslock);	451	if (res > 0)
659	req = reqq_shift (&res_queue);
660
661	if (req)
662	{
663	--npending;
664
665	if (!res_queue.size)
666	{
667	/* read any signals sent by the worker threads */
668	char buf [32];
669	while (read (respipe [0], buf, 32) == 32)
670	;
671	}
672	}
673
674	UNLOCK (reslock);
675
676	if (!req)
677	break;
678
679	--nreqs;
680
681	if (req->type == REQ_GROUP && req->length)
682	{
683	req->fd = 1; /* mark request as delayed */
684	continue;
685	}
686	else
687	{
688	if (req->type == REQ_READ)
689	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
690
691	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
692	SvREADONLY_off (req->data);
693
694	if (req->statdata)
695	{
696	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
697	PL_laststatval = req->result;
698	PL_statcache = *(req->statdata);
699	}
700
701	req_invoke (req);
702
703	count++;
704	}
705
706	req_free (req);
707	}
708
709	if (nreqs <= max_outstanding)
710	break;	452	croak (0);
		453
		454	if (!max_outstanding || max_outstanding > eio_nreqs ())
		455	return res;
711		456
712	poll_wait ();	457	poll_wait ();
713
714	max = 0;
715	}	458	}
716
717	return count;
718	}
719
720	static void create_pipe ()
721	{
722	if (pipe (respipe))
723	croak ("unable to initialize result pipe");
724
725	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
726	croak ("cannot set result pipe to nonblocking mode");
727
728	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
729	croak ("cannot set result pipe to nonblocking mode");
730	}
731
732	/*****************************************************************************/
733	/* work around various missing functions */
734
735	#if !HAVE_PREADWRITE
736	# define pread aio_pread
737	# define pwrite aio_pwrite
738
739	/*
740	* make our pread/pwrite safe against themselves, but not against
741	* normal read/write by using a mutex. slows down execution a lot,
742	* but that's your problem, not mine.
743	*/
744	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
745
746	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
747	{
748	ssize_t res;
749	off_t ooffset;
750
751	LOCK (preadwritelock);
752	ooffset = lseek (fd, 0, SEEK_CUR);
753	lseek (fd, offset, SEEK_SET);
754	res = read (fd, buf, count);
755	lseek (fd, ooffset, SEEK_SET);
756	UNLOCK (preadwritelock);
757
758	return res;
759	}
760
761	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
762	{
763	ssize_t res;
764	off_t ooffset;
765
766	LOCK (preadwritelock);
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = write (fd, buf, count);
770	lseek (fd, offset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775	#endif
776
777	#if !HAVE_FDATASYNC
778	# define fdatasync fsync
779	#endif
780
781	#if !HAVE_READAHEAD
782	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
783
784	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
785	{
786	dBUF;
787
788	while (count > 0)
789	{
790	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
791
792	pread (fd, aio_buf, len, offset);
793	offset += len;
794	count -= len;
795	}
796
797	errno = 0;
798	}
799
800	#endif
801
802	#if !HAVE_READDIR_R
803	# define readdir_r aio_readdir_r
804
805	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
806
807	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
808	{
809	struct dirent *e;
810	int errorno;
811
812	LOCK (readdirlock);
813
814	e = readdir (dirp);
815	errorno = errno;
816
817	if (e)
818	{
819	*res = ent;
820	strcpy (ent->d_name, e->d_name);
821	}
822	else
823	*res = 0;
824
825	UNLOCK (readdirlock);
826
827	errno = errorno;
828	return e ? 0 : -1;
829	}
830	#endif
831
832	/* sendfile always needs emulation */
833	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
834	{
835	ssize_t res;
836
837	if (!count)
838	return 0;
839
840	#if HAVE_SENDFILE
841	# if __linux
842	res = sendfile (ofd, ifd, &offset, count);
843
844	# elif __freebsd
845	/*
846	* Of course, the freebsd sendfile is a dire hack with no thoughts
847	* wasted on making it similar to other I/O functions.
848	*/
849	{
850	off_t sbytes;
851	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
852
853	if (res < 0 && sbytes)
854	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
855	res = sbytes;
856	}
857
858	# elif __hpux
859	res = sendfile (ofd, ifd, offset, count, 0, 0);
860
861	# elif __solaris
862	{
863	struct sendfilevec vec;
864	size_t sbytes;
865
866	vec.sfv_fd = ifd;
867	vec.sfv_flag = 0;
868	vec.sfv_off = offset;
869	vec.sfv_len = count;
870
871	res = sendfilev (ofd, &vec, 1, &sbytes);
872
873	if (res < 0 && sbytes)
874	res = sbytes;
875	}
876
877	# endif
878	#else
879	res = -1;
880	errno = ENOSYS;
881	#endif
882
883	if (res < 0
884	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
885	#if __solaris
886	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
887	#endif
888	)
889	)
890	{
891	/* emulate sendfile. this is a major pain in the ass */
892	dBUF;
893
894	res = 0;
895
896	while (count)
897	{
898	ssize_t cnt;
899
900	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
901
902	if (cnt <= 0)
903	{
904	if (cnt && !res) res = -1;
905	break;
906	}
907
908	cnt = write (ofd, aio_buf, cnt);
909
910	if (cnt <= 0)
911	{
912	if (cnt && !res) res = -1;
913	break;
914	}
915
916	offset += cnt;
917	res += cnt;
918	count -= cnt;
919	}
920	}
921
922	return res;
923	}
924
925	/* read a full directory */
926	static void scandir_ (aio_req req, worker *self)
927	{
928	DIR *dirp;
929	union
930	{
931	struct dirent d;
932	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
933	} *u;
934	struct dirent *entp;
935	char *name, *names;
936	int memlen = 4096;
937	int memofs = 0;
938	int res = 0;
939	int errorno;
940
941	LOCK (wrklock);
942	self->dirp = dirp = opendir (req->dataptr);
943	self->dbuf = u = malloc (sizeof (*u));
944	req->data2ptr = names = malloc (memlen);
945	UNLOCK (wrklock);
946
947	if (dirp && u && names)
948	for (;;)
949	{
950	errno = 0;
951	readdir_r (dirp, &u->d, &entp);
952
953	if (!entp)
954	break;
955
956	name = entp->d_name;
957
958	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
959	{
960	int len = strlen (name) + 1;
961
962	res++;
963
964	while (memofs + len > memlen)
965	{
966	memlen *= 2;
967	LOCK (wrklock);
968	req->data2ptr = names = realloc (names, memlen);
969	UNLOCK (wrklock);
970
971	if (!names)
972	break;
973	}
974
975	memcpy (names + memofs, name, len);
976	memofs += len;
977	}
978	}
979
980	if (errno)
981	res = -1;
982
983	req->result = res;
984	}
985
986	/*****************************************************************************/
987
988	static void *aio_proc (void *thr_arg)
989	{
990	aio_req req;
991	struct timespec ts;
992	worker *self = (worker *)thr_arg;
993
994	/* try to distribute timeouts somewhat evenly */
995	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
996	* (1000000000UL / 1024UL);
997
998	for (;;)
999	{
1000	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1001
1002	LOCK (reqlock);
1003
1004	for (;;)
1005	{
1006	self->req = req = reqq_shift (&req_queue);
1007
1008	if (req)
1009	break;
1010
1011	++idle;
1012
1013	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1014	== ETIMEDOUT)
1015	{
1016	if (idle > max_idle)
1017	{
1018	--idle;
1019	UNLOCK (reqlock);
1020	LOCK (wrklock);
1021	--started;
1022	UNLOCK (wrklock);
1023	goto quit;
1024	}
1025
1026	/* we are allowed to idle, so do so without any timeout */
1027	pthread_cond_wait (&reqwait, &reqlock);
1028	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1029	}
1030
1031	--idle;
1032	}
1033
1034	--nready;
1035
1036	UNLOCK (reqlock);
1037
1038	errno = 0; /* strictly unnecessary */
1039
1040	if (!(req->flags & FLAG_CANCELLED))
1041	switch (req->type)
1042	{
1043	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1044	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1045
1046	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1047	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1048
1049	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1050	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1051	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1052
1053	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1054	case REQ_CLOSE: req->result = close (req->fd); break;
1055	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1056	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1057	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1058	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1059	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1060	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1061
1062	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1063	case REQ_FSYNC: req->result = fsync (req->fd); break;
1064	case REQ_READDIR: scandir_ (req, self); break;
1065
1066	case REQ_BUSY:
1067	{
1068	struct timeval tv;
1069
1070	tv.tv_sec = req->fd;
1071	tv.tv_usec = req->fd2;
1072
1073	req->result = select (0, 0, 0, 0, &tv);
1074	}
1075
1076	case REQ_GROUP:
1077	case REQ_NOP:
1078	break;
1079
1080	case REQ_QUIT:
1081	goto quit;
1082
1083	default:
1084	req->result = ENOSYS;
1085	break;
1086	}
1087
1088	req->errorno = errno;
1089
1090	LOCK (reslock);
1091
1092	++npending;
1093
1094	if (!reqq_push (&res_queue, req))
1095	/* write a dummy byte to the pipe so fh becomes ready */
1096	write (respipe [1], &respipe, 1);
1097
1098	self->req = 0;
1099	worker_clear (self);
1100
1101	UNLOCK (reslock);
1102	}
1103
1104	quit:
1105	LOCK (wrklock);
1106	worker_free (self);
1107	UNLOCK (wrklock);
1108
1109	return 0;
1110	}
1111
1112	/*****************************************************************************/
1113
1114	static void atfork_prepare (void)
1115	{
1116	LOCK (wrklock);
1117	LOCK (reqlock);
1118	LOCK (reslock);
1119	#if !HAVE_PREADWRITE
1120	LOCK (preadwritelock);
1121	#endif
1122	#if !HAVE_READDIR_R
1123	LOCK (readdirlock);
1124	#endif
1125	}
1126
1127	static void atfork_parent (void)
1128	{
1129	#if !HAVE_READDIR_R
1130	UNLOCK (readdirlock);
1131	#endif
1132	#if !HAVE_PREADWRITE
1133	UNLOCK (preadwritelock);
1134	#endif
1135	UNLOCK (reslock);
1136	UNLOCK (reqlock);
1137	UNLOCK (wrklock);
1138	}	459	}
1139		460
1140	static void atfork_child (void)	461	static void atfork_child (void)
1141	{	462	{
1142	aio_req prv;
1143
1144	while (prv = reqq_shift (&req_queue))
1145	req_free (prv);
1146
1147	while (prv = reqq_shift (&res_queue))
1148	req_free (prv);
1149
1150	while (wrk_first.next != &wrk_first)
1151	{
1152	worker *wrk = wrk_first.next;
1153
1154	if (wrk->req)
1155	req_free (wrk->req);
1156
1157	worker_clear (wrk);
1158	worker_free (wrk);
1159	}
1160
1161	started = 0;
1162	idle = 0;
1163	nreqs = 0;
1164	nready = 0;
1165	npending = 0;
1166
1167	close (respipe [0]);
1168	close (respipe [1]);
1169	create_pipe ();	463	create_respipe ();
1170
1171	atfork_parent ();
1172	}	464	}
1173		465
1174	#define dREQ \	466	#define dREQ \
1175	aio_req req; \	467	aio_req req; \
1176	int req_pri = next_pri; \	468	int req_pri = next_pri; \
1177	next_pri = DEFAULT_PRI + PRI_BIAS; \	469	next_pri = EIO_PRI_DEFAULT; \
1178	\	470	\
1179	if (SvOK (callback) && !SvROK (callback)) \	471	if (SvOK (callback) && !SvROK (callback)) \
1180	croak ("callback must be undef or of reference type"); \	472	croak ("callback must be undef or of reference type"); \
1181	\	473	\
1182	Newz (0, req, 1, aio_cb); \	474	Newz (0, req, 1, eio_req); \
1183	if (!req) \	475	if (!req) \
1184	croak ("out of memory during aio_req allocation"); \	476	croak ("out of memory during eio_req allocation"); \
1185	\	477	\
1186	req->callback = newSVsv (callback); \	478	req->callback = newSVsv (callback); \
1187	req->pri = req_pri	479	req->pri = req_pri
1188		480
1189	#define REQ_SEND \	481	#define REQ_SEND \
		482	PUTBACK; \
1190	req_send (req); \	483	req_submit (req); \
		484	SPAGAIN; \
1191	\	485	\
1192	if (GIMME_V != G_VOID) \	486	if (GIMME_V != G_VOID) \
1193	XPUSHs (req_sv (req, AIO_REQ_KLASS));	487	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1194		488
1195	MODULE = IO::AIO PACKAGE = IO::AIO	489	MODULE = IO::AIO PACKAGE = IO::AIO
1196		490
1197	PROTOTYPES: ENABLE	491	PROTOTYPES: ENABLE
1198		492
1199	BOOT:	493	BOOT:
1200	{	494	{
1201	HV *stash = gv_stashpv ("IO::AIO", 1);	495	stash = gv_stashpv ("IO::AIO", 1);
1202		496
1203	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	497	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1204	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	498	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1205	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	499	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	500	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	501	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		502	#ifndef _WIN32
1208	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	503	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		504	#endif
1209		505
1210	create_pipe ();	506	create_respipe ();
1211	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);
1212	}	513	}
		514
		515	void
		516	max_poll_reqs (int nreqs)
		517	PROTOTYPE: $
		518	CODE:
		519	eio_set_max_poll_reqs (nreqs);
		520
		521	void
		522	max_poll_time (double nseconds)
		523	PROTOTYPE: $
		524	CODE:
		525	eio_set_max_poll_time (nseconds);
1213		526
1214	void	527	void
1215	min_parallel (int nthreads)	528	min_parallel (int nthreads)
1216	PROTOTYPE: $	529	PROTOTYPE: $
		530	CODE:
		531	eio_set_min_parallel (nthreads);
1217		532
1218	void	533	void
1219	max_parallel (int nthreads)	534	max_parallel (int nthreads)
1220	PROTOTYPE: $	535	PROTOTYPE: $
		536	CODE:
		537	eio_set_max_parallel (nthreads);
1221		538
1222	int	539	void
		540	max_idle (int nthreads)
		541	PROTOTYPE: $
		542	CODE:
		543	eio_set_max_idle (nthreads);
		544
		545	void
1223	max_outstanding (int maxreqs)	546	max_outstanding (int maxreqs)
1224	PROTOTYPE: $	547	PROTOTYPE: $
1225	CODE:	548	CODE:
1226	RETVAL = max_outstanding;
1227	max_outstanding = maxreqs;	549	max_outstanding = maxreqs;
1228	OUTPUT:
1229	RETVAL
1230		550
1231	void	551	void
1232	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	552	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1233	SV * pathname
1234	int flags
1235	int mode
1236	SV * callback
1237	PROTOTYPE: $$$;$	553	PROTOTYPE: $$$;$
1238	PPCODE:	554	PPCODE:
1239	{	555	{
1240	dREQ;	556	dREQ;
1241		557
1242	req->type = REQ_OPEN;	558	req->type = EIO_OPEN;
1243	req->data = newSVsv (pathname);	559	req->sv1 = newSVsv (pathname);
1244	req->dataptr = SvPVbyte_nolen (req->data);	560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1245	req->fd = flags;	561	req->int1 = flags;
1246	req->mode = mode;	562	req->int2 = mode;
1247		563
1248	REQ_SEND;	564	REQ_SEND;
1249	}	565	}
1250		566
1251	void	567	void
1252	aio_close (fh,callback=&PL_sv_undef)	568	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1253	SV * fh
1254	SV * callback
1255	PROTOTYPE: $;$	569	PROTOTYPE: $;$
1256	ALIAS:	570	ALIAS:
1257	aio_close = REQ_CLOSE
1258	aio_fsync = REQ_FSYNC	571	aio_fsync = EIO_FSYNC
1259	aio_fdatasync = REQ_FDATASYNC	572	aio_fdatasync = EIO_FDATASYNC
1260	PPCODE:	573	PPCODE:
1261	{	574	{
1262	dREQ;	575	dREQ;
1263		576
1264	req->type = ix;	577	req->type = ix;
1265	req->fh = newSVsv (fh);	578	req->sv1 = newSVsv (fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	579	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1267		580
1268	REQ_SEND (req);	581	REQ_SEND (req);
1269	}	582	}
1270		583
1271	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
1272	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)
1273	SV * fh
1274	UV offset
1275	UV length
1276	SV * data
1277	UV dataoffset
1278	SV * callback
1279	ALIAS:	614	ALIAS:
1280	aio_read = REQ_READ	615	aio_read = EIO_READ
1281	aio_write = REQ_WRITE	616	aio_write = EIO_WRITE
1282	PROTOTYPE: $$$$$;$	617	PROTOTYPE: $$$$$;$
1283	PPCODE:	618	PPCODE:
1284	{	619	{
1285	aio_req req;
1286	STRLEN svlen;	620	STRLEN svlen;
1287	char *svptr = SvPVbyte (data, svlen);	621	char *svptr = SvPVbyte (data, svlen);
		622	UV len = SvUV (length);
1288		623
1289	SvUPGRADE (data, SVt_PV);	624	SvUPGRADE (data, SVt_PV);
1290	SvPOK_on (data);	625	SvPOK_on (data);
1291		626
1292	if (dataoffset < 0)	627	if (dataoffset < 0)
1293	dataoffset += svlen;	628	dataoffset += svlen;
1294		629
1295	if (dataoffset < 0 || dataoffset > svlen)	630	if (dataoffset < 0 || dataoffset > svlen)
1296	croak ("data offset outside of string");	631	croak ("dataoffset outside of data scalar");
1297		632
1298	if (ix == REQ_WRITE)	633	if (ix == EIO_WRITE)
1299	{	634	{
1300	/* write: check length and adjust. */	635	/* write: check length and adjust. */
1301	if (length < 0 || length + dataoffset > svlen)	636	if (!SvOK (length) || len + dataoffset > svlen)
1302	length = svlen - dataoffset;	637	len = svlen - dataoffset;
1303	}	638	}
1304	else	639	else
1305	{	640	{
1306	/* read: grow scalar as necessary */	641	/* read: grow scalar as necessary */
1307	svptr = SvGROW (data, length + dataoffset);	642	svptr = SvGROW (data, len + dataoffset + 1);
1308	}	643	}
1309		644
1310	if (length < 0)	645	if (len < 0)
1311	croak ("length must not be negative");	646	croak ("length must not be negative");
1312		647
1313	{	648	{
1314	dREQ;	649	dREQ;
1315		650
1316	req->type = ix;	651	req->type = ix;
1317	req->fh = newSVsv (fh);	652	req->sv1 = newSVsv (fh);
1318	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	653	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1319	: IoOFP (sv_2io (fh)));	654	: IoOFP (sv_2io (fh)));
		655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320	req->offset = offset;	656	req->size = len;
1321	req->length = length;
1322	req->data = SvREFCNT_inc (data);	657	req->sv2 = SvREFCNT_inc (data);
1323	req->dataptr = (char *)svptr + dataoffset;	658	req->ptr2 = (char *)svptr + dataoffset;
		659	req->stroffset = dataoffset;
1324		660
1325	if (!SvREADONLY (data))	661	if (!SvREADONLY (data))
1326	{	662	{
1327	SvREADONLY_on (data);	663	SvREADONLY_on (data);
1328	req->data2ptr = (void *)data;	664	req->flags |= FLAG_SV2_RO_OFF;
1329	}	665	}
1330		666
1331	REQ_SEND;	667	REQ_SEND;
1332	}	668	}
1333	}	669	}
1334		670
1335	void	671	void
		672	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		673	PROTOTYPE: $$;$
		674	PPCODE:
		675	{
		676	SV *data;
		677	dREQ;
		678
		679	req->type = EIO_READLINK;
		680	req->sv1 = newSVsv (path);
		681	req->ptr1 = SvPVbyte_nolen (req->sv1);
		682
		683	REQ_SEND;
		684	}
		685
		686	void
1336	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)
1337	SV * out_fh
1338	SV * in_fh
1339	UV in_offset
1340	UV length
1341	SV * callback
1342	PROTOTYPE: $$$$;$	688	PROTOTYPE: $$$$;$
1343	PPCODE:	689	PPCODE:
1344	{	690	{
1345	dREQ;	691	dREQ;
1346		692
1347	req->type = REQ_SENDFILE;	693	req->type = EIO_SENDFILE;
1348	req->fh = newSVsv (out_fh);	694	req->sv1 = newSVsv (out_fh);
1349	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	695	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1350	req->fh2 = newSVsv (in_fh);	696	req->sv2 = newSVsv (in_fh);
1351	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	697	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1352	req->offset = in_offset;	698	req->offs = SvVAL64 (in_offset);
1353	req->length = length;	699	req->size = length;
1354		700
1355	REQ_SEND;	701	REQ_SEND;
1356	}	702	}
1357		703
1358	void	704	void
1359	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	705	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1360	SV * fh
1361	UV offset
1362	IV length
1363	SV * callback
1364	PROTOTYPE: $$$;$	706	PROTOTYPE: $$$;$
1365	PPCODE:	707	PPCODE:
1366	{	708	{
1367	dREQ;	709	dREQ;
1368		710
1369	req->type = REQ_READAHEAD;	711	req->type = EIO_READAHEAD;
1370	req->fh = newSVsv (fh);	712	req->sv1 = newSVsv (fh);
1371	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	713	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1372	req->offset = offset;	714	req->offs = SvVAL64 (offset);
1373	req->length = length;	715	req->size = length;
1374		716
1375	REQ_SEND;	717	REQ_SEND;
1376	}	718	}
1377		719
1378	void	720	void
1379	aio_stat (fh_or_path,callback=&PL_sv_undef)	721	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1380	SV * fh_or_path
1381	SV * callback
1382	ALIAS:	722	ALIAS:
1383	aio_stat = REQ_STAT	723	aio_stat = EIO_STAT
1384	aio_lstat = REQ_LSTAT	724	aio_lstat = EIO_LSTAT
1385	PPCODE:	725	PPCODE:
1386	{	726	{
1387	dREQ;	727	dREQ;
1388		728
1389	New (0, req->statdata, 1, Stat_t);	729	req->sv1 = newSVsv (fh_or_path);
1390	if (!req->statdata)
1391	{
1392	req_free (req);
1393	croak ("out of memory during aio_req->statdata allocation");
1394	}
1395		730
1396	if (SvPOK (fh_or_path))	731	if (SvPOK (req->sv1))
1397	{	732	{
1398	req->type = ix;	733	req->type = ix;
1399	req->data = newSVsv (fh_or_path);
1400	req->dataptr = SvPVbyte_nolen (req->data);	734	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	}	735	}
1402	else	736	else
1403	{	737	{
1404	req->type = REQ_FSTAT;	738	req->type = EIO_FSTAT;
1405	req->fh = newSVsv (fh_or_path);
1406	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1407	}	740	}
1408		741
1409	REQ_SEND;	742	REQ_SEND;
1410	}	743	}
1411		744
1412	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
1413	aio_unlink (pathname,callback=&PL_sv_undef)	843	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414	SV * pathname
1415	SV * callback
1416	ALIAS:	844	ALIAS:
1417	aio_unlink = REQ_UNLINK	845	aio_unlink = EIO_UNLINK
1418	aio_rmdir = REQ_RMDIR	846	aio_rmdir = EIO_RMDIR
1419	aio_readdir = REQ_READDIR	847	aio_readdir = EIO_READDIR
1420	PPCODE:	848	PPCODE:
1421	{	849	{
1422	dREQ;	850	dREQ;
1423		851
1424	req->type = ix;	852	req->type = ix;
1425	req->data = newSVsv (pathname);	853	req->sv1 = newSVsv (pathname);
1426	req->dataptr = SvPVbyte_nolen (req->data);	854	req->ptr1 = SvPVbyte_nolen (req->sv1);
		855
		856	REQ_SEND;
		857	}
		858
		859	void
		860	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		861	ALIAS:
		862	aio_link = EIO_LINK
		863	aio_symlink = EIO_SYMLINK
		864	aio_rename = EIO_RENAME
		865	PPCODE:
		866	{
		867	dREQ;
		868
		869	req->type = ix;
		870	req->sv1 = newSVsv (oldpath);
		871	req->ptr1 = SvPVbyte_nolen (req->sv1);
		872	req->sv2 = newSVsv (newpath);
		873	req->ptr2 = SvPVbyte_nolen (req->sv2);
1427		874
1428	REQ_SEND;	875	REQ_SEND;
1429	}	876	}
1430		877
1431	void	878	void
1432	aio_link (oldpath,newpath,callback=&PL_sv_undef)	879	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1433	SV * oldpath
1434	SV * newpath
1435	SV * callback
1436	ALIAS:
1437	aio_link = REQ_LINK
1438	aio_symlink = REQ_SYMLINK
1439	aio_rename = REQ_RENAME
1440	PPCODE:	880	PPCODE:
1441	{	881	{
1442	dREQ;	882	dREQ;
1443		883
1444	req->type = ix;	884	req->type = EIO_MKNOD;
1445	req->fh = newSVsv (oldpath);	885	req->sv1 = newSVsv (pathname);
1446	req->data2ptr = SvPVbyte_nolen (req->fh);	886	req->ptr1 = SvPVbyte_nolen (req->sv1);
1447	req->data = newSVsv (newpath);	887	req->int2 = (mode_t)mode;
1448	req->dataptr = SvPVbyte_nolen (req->data);	888	req->offs = dev;
1449		889
1450	REQ_SEND;	890	REQ_SEND;
1451	}	891	}
1452		892
1453	void	893	void
1454	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	894	aio_busy (double delay, SV *callback=&PL_sv_undef)
1455	SV * pathname
1456	SV * callback
1457	UV mode
1458	UV dev
1459	PPCODE:	895	PPCODE:
1460	{	896	{
1461	dREQ;	897	dREQ;
1462		898
1463	req->type = REQ_MKNOD;	899	req->type = EIO_BUSY;
1464	req->data = newSVsv (pathname);	900	req->nv1 = delay < 0. ? 0. : delay;
1465	req->dataptr = SvPVbyte_nolen (req->data);	901
1466	req->mode = (mode_t)mode;
1467	req->offset = dev;
1468
1469	REQ_SEND;	902	REQ_SEND;
1470	}	903	}
1471		904
1472	void	905	void
1473	aio_busy (delay,callback=&PL_sv_undef)
1474	double delay
1475	SV * callback
1476	PPCODE:
1477	{
1478	dREQ;
1479
1480	req->type = REQ_BUSY;
1481	req->fd = delay < 0. ? 0 : delay;
1482	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1483
1484	REQ_SEND;
1485	}
1486
1487	void
1488	aio_group (callback=&PL_sv_undef)	906	aio_group (SV *callback=&PL_sv_undef)
1489	SV * callback
1490	PROTOTYPE: ;$	907	PROTOTYPE: ;$
1491	PPCODE:	908	PPCODE:
1492	{	909	{
1493	dREQ;	910	dREQ;
1494		911
1495	req->type = REQ_GROUP;	912	req->type = EIO_GROUP;
		913
1496	req_send (req);	914	req_submit (req);
1497
1498	XPUSHs (req_sv (req, AIO_GRP_KLASS));	915	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1499	}	916	}
1500		917
1501	void	918	void
1502	aio_nop (callback=&PL_sv_undef)	919	aio_nop (SV *callback=&PL_sv_undef)
1503	SV * callback	920	ALIAS:
		921	aio_nop = EIO_NOP
		922	aio_sync = EIO_SYNC
1504	PPCODE:	923	PPCODE:
1505	{	924	{
1506	dREQ;	925	dREQ;
1507		926
1508	req->type = REQ_NOP;	927	req->type = ix;
1509		928
1510	REQ_SEND;	929	REQ_SEND;
1511	}	930	}
1512		931
1513	int	932	int
1514	aioreq_pri (int pri = 0)	933	aioreq_pri (int pri = 0)
1515	PROTOTYPE: ;$	934	PROTOTYPE: ;$
1516	CODE:	935	CODE:
1517	RETVAL = next_pri - PRI_BIAS;	936	RETVAL = next_pri;
1518	if (items > 0)	937	if (items > 0)
1519	{	938	{
1520	if (pri < PRI_MIN) pri = PRI_MIN;	939	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521	if (pri > PRI_MAX) pri = PRI_MAX;	940	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522	next_pri = pri + PRI_BIAS;	941	next_pri = pri;
1523	}	942	}
1524	OUTPUT:	943	OUTPUT:
1525	RETVAL	944	RETVAL
1526		945
1527	void	946	void
1528	aioreq_nice (int nice = 0)	947	aioreq_nice (int nice = 0)
1529	CODE:	948	CODE:
1530	nice = next_pri - nice;	949	nice = next_pri - nice;
1531	if (nice < PRI_MIN) nice = PRI_MIN;	950	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532	if (nice > PRI_MAX) nice = PRI_MAX;	951	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533	next_pri = nice + PRI_BIAS;	952	next_pri = nice;
1534		953
1535	void	954	void
1536	flush ()	955	flush ()
1537	PROTOTYPE:	956	PROTOTYPE:
1538	CODE:	957	CODE:
1539	while (nreqs)	958	while (eio_nreqs ())
1540	{	959	{
1541	poll_wait ();	960	poll_wait ();
1542	poll_cb (0);	961	poll_cb ();
1543	}	962	}
1544		963
1545	void	964	int
1546	poll()	965	poll()
1547	PROTOTYPE:	966	PROTOTYPE:
1548	CODE:	967	CODE:
1549	if (nreqs)
1550	{
1551	poll_wait ();	968	poll_wait ();
1552	poll_cb (0);	969	RETVAL = poll_cb ();
1553	}	970	OUTPUT:
		971	RETVAL
1554		972
1555	int	973	int
1556	poll_fileno()	974	poll_fileno()
1557	PROTOTYPE:	975	PROTOTYPE:
1558	CODE:	976	CODE:
…		…
1562		980
1563	int	981	int
1564	poll_cb(...)	982	poll_cb(...)
1565	PROTOTYPE:	983	PROTOTYPE:
1566	CODE:	984	CODE:
1567	RETVAL = poll_cb (0);	985	RETVAL = poll_cb ();
1568	OUTPUT:	986	OUTPUT:
1569	RETVAL	987	RETVAL
1570		988
1571	int
1572	poll_some(int max = 0)
1573	PROTOTYPE: $
1574	CODE:
1575	RETVAL = poll_cb (max);
1576	OUTPUT:
1577	RETVAL
1578
1579	void	989	void
1580	poll_wait()	990	poll_wait()
1581	PROTOTYPE:	991	PROTOTYPE:
1582	CODE:	992	CODE:
1583	if (nreqs)
1584	poll_wait ();	993	poll_wait ();
1585		994
1586	int	995	int
1587	nreqs()	996	nreqs()
1588	PROTOTYPE:	997	PROTOTYPE:
1589	CODE:	998	CODE:
1590	RETVAL = nreqs;	999	RETVAL = eio_nreqs ();
1591	OUTPUT:	1000	OUTPUT:
1592	RETVAL	1001	RETVAL
1593		1002
1594	int	1003	int
1595	nready()	1004	nready()
1596	PROTOTYPE:	1005	PROTOTYPE:
1597	CODE:	1006	CODE:
1598	RETVAL = get_nready ();	1007	RETVAL = eio_nready ();
1599	OUTPUT:	1008	OUTPUT:
1600	RETVAL	1009	RETVAL
1601		1010
1602	int	1011	int
1603	npending()	1012	npending()
1604	PROTOTYPE:	1013	PROTOTYPE:
1605	CODE:	1014	CODE:
1606	RETVAL = get_npending ();	1015	RETVAL = eio_npending ();
1607	OUTPUT:	1016	OUTPUT:
1608	RETVAL	1017	RETVAL
1609		1018
		1019	int
		1020	nthreads()
		1021	PROTOTYPE:
		1022	CODE:
		1023	RETVAL = eio_nthreads ();
		1024	OUTPUT:
		1025	RETVAL
		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
1610	PROTOTYPES: DISABLE	1032	PROTOTYPES: DISABLE
1611		1033
1612	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1034	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613		1035
1614	void	1036	void
1615	cancel (aio_req_ornot req)	1037	cancel (aio_req_ornot req)
1616	CODE:	1038	CODE:
1617	req_cancel (req);	1039	eio_cancel (req);
1618		1040
1619	void	1041	void
1620	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1042	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1621	CODE:	1043	CODE:
1622	SvREFCNT_dec (req->callback);	1044	SvREFCNT_dec (req->callback);
…		…
1627	void	1049	void
1628	add (aio_req grp, ...)	1050	add (aio_req grp, ...)
1629	PPCODE:	1051	PPCODE:
1630	{	1052	{
1631	int i;	1053	int i;
1632	aio_req req;
1633		1054
1634	if (grp->fd == 2)	1055	if (grp->int1 == 2)
1635	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");
1636		1057
1637	for (i = 1; i < items; ++i )	1058	for (i = 1; i < items; ++i )
1638	{	1059	{
		1060	aio_req req;
		1061
1639	if (GIMME_V != G_VOID)	1062	if (GIMME_V != G_VOID)
1640	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1063	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641		1064
1642	req = SvAIO_REQ (ST (i));	1065	req = SvAIO_REQ (ST (i));
1643		1066
1644	if (req)	1067	if (req)
1645	{	1068	eio_grp_add (grp, req);
1646	++grp->length;
1647	req->grp = grp;
1648
1649	req->grp_prev = 0;
1650	req->grp_next = grp->grp_first;
1651
1652	if (grp->grp_first)
1653	grp->grp_first->grp_prev = req;
1654
1655	grp->grp_first = req;
1656	}
1657	}	1069	}
1658	}	1070	}
1659		1071
1660	void	1072	void
1661	cancel_subs (aio_req_ornot req)	1073	cancel_subs (aio_req_ornot req)
…		…
1674	av = newAV ();	1086	av = newAV ();
1675		1087
1676	for (i = 1; i < items; ++i )	1088	for (i = 1; i < items; ++i )
1677	av_push (av, newSVsv (ST (i)));	1089	av_push (av, newSVsv (ST (i)));
1678		1090
1679	SvREFCNT_dec (grp->data);	1091	SvREFCNT_dec (grp->sv1);
1680	grp->data = (SV *)av;	1092	grp->sv1 = (SV *)av;
1681	}	1093	}
1682		1094
1683	void	1095	void
1684	errno (aio_req grp, int errorno = errno)	1096	errno (aio_req grp, int errorno = errno)
1685	CODE:	1097	CODE:
1686	grp->errorno = errorno;	1098	grp->errorno = errorno;
1687		1099
1688	void	1100	void
1689	limit (aio_req grp, int limit)	1101	limit (aio_req grp, int limit)
1690	CODE:	1102	CODE:
1691	grp->fd2 = limit;	1103	eio_grp_limit (grp, limit);
1692	aio_grp_feed (grp);
1693		1104
1694	void	1105	void
1695	feed (aio_req grp, SV *callback=&PL_sv_undef)	1106	feed (aio_req grp, SV *callback=&PL_sv_undef)
1696	CODE:	1107	CODE:
1697	{	1108	{
1698	SvREFCNT_dec (grp->fh2);	1109	SvREFCNT_dec (grp->sv2);
1699	grp->fh2 = newSVsv (callback);	1110	grp->sv2 = newSVsv (callback);
1700		1111
1701	if (grp->fd2 <= 0)	1112	if (grp->int2 <= 0)
1702	grp->fd2 = 2;	1113	grp->int2 = 2;
1703		1114
1704	aio_grp_feed (grp);	1115	eio_grp_limit (grp, grp->int2);
1705	}	1116	}
1706		1117

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