ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.80 by root, Fri Oct 27 19:17:23 2006 UTC vs.
Revision 1.118 by root, Sun May 11 00:01:03 2008 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
32		17
33	#if HAVE_SENDFILE	18	/* perl namespace pollution */
34	# if __linux	19	#undef VERSION
35	# include <sys/sendfile.h>	20
36	# elif __freebsd	21	#ifdef _WIN32
37	# include <sys/socket.h>	22
38	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	24	# undef malloc
40	# include <sys/socket.h>	25	# undef free
41	# elif __solaris /* not yet */	26
42	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
43	# else	59	#else
44	# error sendfile support requested but not available	60
45	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
46	#endif	68	#endif
47		69
48	/* used for struct dirent, AIX doesn't provide it */	70	#define EIO_STRUCT_STAT Stat_t
49	#ifndef NAME_MAX	71
50	# define NAME_MAX 4096	72	/* use NV for 32 bit perls as it allows larger offsets */
		73	#if IVSIZE >= 8
		74	# define SvVAL64 SvIV
		75	#else
		76	# define SvVAL64 SvNV
51	#endif	77	#endif
52		78
53	#ifndef PTHREAD_STACK_MIN	79	static HV *stash;
54	/* care for broken platforms, e.g. windows */	80	typedef SV SV8; /* byte-sv, used for argument-checking */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* wether word reads are potentially non-atomic.
67	* this is conservatice, likely most arches this runs
68	* on have atomic word read/writes.
69	*/
70	#ifndef WORDREAD_UNSAFE
71	# if __i386 || __x86_64
72	# define WORDREAD_UNSAFE 0
73	# else
74	# define WORDREAD_UNSAFE 1
75	# endif
76	#endif
77
78	/* buffer size for various temporary buffers */
79	#define AIO_BUFSIZE 65536
80
81	#define dBUF \
82	char *aio_buf; \
83	LOCK (wrklock); \
84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
85	UNLOCK (wrklock); \
86	if (!aio_buf) \
87	return -1;
88
89	enum {
90	REQ_QUIT,
91	REQ_OPEN, REQ_CLOSE,
92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
93	REQ_SENDFILE,
94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
95	REQ_FSYNC, REQ_FDATASYNC,
96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
97	REQ_READDIR,
98	REQ_LINK, REQ_SYMLINK,
99	REQ_GROUP, REQ_NOP,
100	REQ_BUSY,
101	};
102		81
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		84
106	typedef struct aio_cb	85	#define EIO_COMMON \
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;	86	SV *callback; \
111	SV *fh, *fh2;	87	SV *sv1, *sv2; \
112	void *dataptr, *data2ptr;
113	Stat_t *statdata;
114	off_t offset;
115	size_t length;
116	ssize_t result;
117
118	STRLEN dataoffset;	88	STRLEN stroffset; \
119	int type;	89	SV *self
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123		90
124	unsigned char flags;	91	#include "libeio/eio.h"
125	unsigned char pri;
126		92
127	SV *self; /* the perl counterpart of this request, if any */	93	static int req_invoke (eio_req *req);
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	94	#define EIO_FINISH(req) req_invoke (req)
129	} aio_cb;	95	static void aio_grp_feed (eio_req *grp);
		96	#define EIO_FEED(req) aio_grp_feed (req)
		97	static void req_destroy (eio_req *grp);
		98	#define EIO_DESTROY(req) req_destroy (req)
130		99
131	enum {	100	enum {
132	FLAG_CANCELLED = 0x01,	101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
133	};	102	};
134		103
		104	#include "libeio/eio.c"
		105
135	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	107	typedef eio_req *aio_req_ornot;
137		108
138	enum {	109	static SV *on_next_submit;
139	PRI_MIN = -4,
140	PRI_MAX = 4,
141
142	DEFAULT_PRI = 0,
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;	110	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
		111	static int max_outstanding;
148		112
149	static unsigned int started, wanted;	113	static int respipe_osf [2], respipe [2] = { -1, -1 };
150		114
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	115	static void req_destroy (aio_req req);
296	static void req_cancel (aio_req req);	116	static void req_cancel (aio_req req);
		117
		118	static void want_poll (void)
		119	{
		120	/* write a dummy byte to the pipe so fh becomes ready */
		121	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		122	}
		123
		124	static void done_poll (void)
		125	{
		126	/* read any signals sent by the worker threads */
		127	char buf [4];
		128	while (respipe_read (respipe [0], buf, 4) == 4)
		129	;
		130	}
297		131
298	/* must be called at most once */	132	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	133	static SV *req_sv (aio_req req, const char *klass)
300	{	134	{
301	if (!req->self)	135	if (!req->self)
…		…
319	return mg ? (aio_req)mg->mg_ptr : 0;	153	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	154	}
321		155
322	static void aio_grp_feed (aio_req grp)	156	static void aio_grp_feed (aio_req grp)
323	{	157	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	158	if (grp->sv2 && SvOK (grp->sv2))
325	{	159	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	160	dSP;
331		161
332	ENTER;	162	ENTER;
333	SAVETMPS;	163	SAVETMPS;
334	PUSHMARK (SP);	164	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	165	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
336	PUTBACK;	166	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	167	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	168	SPAGAIN;
339	FREETMPS;	169	FREETMPS;
340	LEAVE;	170	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	171	}
351	}	172	}
352		173
353	static void aio_grp_dec (aio_req grp)	174	static void req_submit (eio_req *req)
354	{	175	{
355	--grp->length;	176	eio_submit (req);
356		177
357	/* call feeder, if applicable */	178	if (on_next_submit)
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	179	{
363	req_invoke (grp);	180	dSP;
364	req_free (grp);	181	SV *cb = sv_2mortal (on_next_submit);
		182
		183	on_next_submit = 0;
		184
		185	PUSHMARK (SP);
		186	PUTBACK;
		187	call_sv (cb, G_DISCARD | G_EVAL);
365	}	188	}
366	}	189	}
367		190
368	static void req_invoke (aio_req req)	191	static int req_invoke (eio_req *req)
369	{	192	{
370	dSP;	193	dSP;
371		194
		195	if (req->flags & FLAG_SV2_RO_OFF)
		196	SvREADONLY_off (req->sv2);
		197
372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	198	if (!EIO_CANCELLED (req) && SvOK (req->callback))
373	{	199	{
374	ENTER;	200	ENTER;
375	SAVETMPS;	201	SAVETMPS;
376	PUSHMARK (SP);	202	PUSHMARK (SP);
377	EXTEND (SP, 1);	203	EXTEND (SP, 1);
378		204
379	switch (req->type)	205	switch (req->type)
380	{	206	{
381	case REQ_READDIR:	207	case EIO_READDIR:
382	{	208	{
383	SV *rv = &PL_sv_undef;	209	SV *rv = &PL_sv_undef;
384		210
385	if (req->result >= 0)	211	if (req->result >= 0)
386	{	212	{
387	int i;	213	int i;
388	char *buf = req->data2ptr;	214	char *buf = req->ptr2;
389	AV *av = newAV ();	215	AV *av = newAV ();
390		216
391	av_extend (av, req->result - 1);	217	av_extend (av, req->result - 1);
392		218
393	for (i = 0; i < req->result; ++i)	219	for (i = 0; i < req->result; ++i)
…		…
403		229
404	PUSHs (rv);	230	PUSHs (rv);
405	}	231	}
406	break;	232	break;
407		233
408	case REQ_OPEN:	234	case EIO_OPEN:
409	{	235	{
410	/* convert fd to fh */	236	/* convert fd to fh */
411	SV *fh;	237	SV *fh = &PL_sv_undef;
412		238
413	PUSHs (sv_2mortal (newSViv (req->result)));	239	if (req->result >= 0)
414	PUTBACK;	240	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	241	GV *gv = (GV *)sv_newmortal ();
416	SPAGAIN;	242	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		243	char sym [64];
		244	int symlen;
		245
		246	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		247	gv_init (gv, stash, sym, symlen, 0);
417		248
418	fh = SvREFCNT_inc (POPs);	249	symlen = snprintf (
		250	sym,
		251	sizeof (sym),
		252	"%s&=%d",
		253	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		254	req->result
		255	);
419		256
		257	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		258	fh = (SV *)gv;
		259	}
		260
420	PUSHMARK (SP);	261	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	262	}
423	break;	263	break;
424		264
425	case REQ_GROUP:	265	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	266	req->int1 = 2; /* mark group as finished */
427		267
428	if (req->data)	268	if (req->sv1)
429	{	269	{
430	int i;	270	int i;
431	AV *av = (AV *)req->data;	271	AV *av = (AV *)req->sv1;
432		272
433	EXTEND (SP, AvFILL (av) + 1);	273	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	274	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	275	PUSHs (*av_fetch (av, i, 0));
436	}	276	}
437	break;	277	break;
438		278
439	case REQ_NOP:	279	case EIO_NOP:
440	case REQ_BUSY:	280	case EIO_BUSY:
441	break;	281	break;
		282
		283	case EIO_READLINK:
		284	if (req->result > 0)
		285	{
		286	SvCUR_set (req->sv2, req->result);
		287	*SvEND (req->sv2) = 0;
		288	PUSHs (req->sv2);
		289	}
		290	break;
		291
		292	case EIO_STAT:
		293	case EIO_LSTAT:
		294	case EIO_FSTAT:
		295	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		296	PL_laststatval = req->result;
		297	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		298	PUSHs (sv_2mortal (newSViv (req->result)));
		299	break;
		300
		301	case EIO_READ:
		302	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		303	*SvEND (req->sv2) = 0;
		304	PUSHs (sv_2mortal (newSViv (req->result)));
		305	break;
		306
		307	case EIO_DUP2:
		308	if (req->result > 0)
		309	req->result = 0;
		310	/* FALLTHROUGH */
442		311
443	default:	312	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	313	PUSHs (sv_2mortal (newSViv (req->result)));
445	break;	314	break;
446	}	315	}
447		316
448	errno = req->errorno;	317	errno = req->errorno;
449		318
450	PUTBACK;	319	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	320	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	321	SPAGAIN;
453		322
454	FREETMPS;	323	FREETMPS;
455	LEAVE;	324	LEAVE;
		325
		326	PUTBACK;
456	}	327	}
457		328
458	if (req->grp)	329	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	330	}
478		331
479	static void req_free (aio_req req)	332	static void req_destroy (aio_req req)
480	{	333	{
481	if (req->self)	334	if (req->self)
482	{	335	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	336	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	337	SvREFCNT_dec (req->self);
485	}	338	}
486		339
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	340	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	341	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	342	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		343
496	Safefree (req);	344	Safefree (req);
497	}	345	}
498		346
499	static void req_cancel_subs (aio_req grp)	347	static void req_cancel_subs (aio_req grp)
500	{	348	{
501	aio_req sub;	349	aio_req sub;
502		350
503	if (grp->type != REQ_GROUP)	351	if (grp->type != EIO_GROUP)
504	return;	352	return;
505		353
506	SvREFCNT_dec (grp->fh2);	354	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	355	grp->sv2 = 0;
508		356
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	357	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	358	}
512		359
513	static void req_cancel (aio_req req)	360	#ifdef USE_SOCKETS_AS_HANDLES
514	{	361	# define TO_SOCKET(x) (win32_get_osfhandle (x))
515	req->flags |= FLAG_CANCELLED;	362	#else
516		363	# define TO_SOCKET(x) (x)
517	req_cancel_subs (req);
518	}
519
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif	364	#endif
538		365
539	sigfillset (&fullsigset);	366	static void
		367	create_respipe (void)
		368	{
		369	int old_readfd = respipe [0];
540		370
541	LOCK (wrklock);	371	if (respipe [1] >= 0)
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	372	respipe_close (TO_SOCKET (respipe [1]));
543		373
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	374	#ifdef _WIN32
		375	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		376	#else
		377	if (pipe (respipe))
		378	#endif
		379	croak ("unable to initialize result pipe");
		380
		381	if (old_readfd >= 0)
545	{	382	{
546	wrk->prev = &wrk_first;	383	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
547	wrk->next = wrk_first.next;	384	croak ("unable to initialize result pipe(2)");
548	wrk_first.next->prev = wrk;	385
549	wrk_first.next = wrk;	386	respipe_close (respipe [0]);
550	++started;	387	respipe [0] = old_readfd;
551	}	388	}
552	else
553	free (wrk);
554		389
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);	390	#ifdef _WIN32
556	UNLOCK (wrklock);	391	int arg = 1;
557	}	392	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
558		393	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
559	static void maybe_start_thread ()	394	#else
560	{	395	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
561	#if 0	396	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif	397	#endif
		398	croak ("unable to initialize result pipe(3)");
565		399
566	if (started >= wanted)	400	respipe_osf [0] = TO_SOCKET (respipe [0]);
567	return;	401	respipe_osf [1] = TO_SOCKET (respipe [1]);
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}	402	}
592		403
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	404	static void poll_wait (void)
638	{	405	{
639	fd_set rfd;	406	fd_set rfd;
640		407
641	while (nreqs)	408	while (eio_nreqs ())
642	{	409	{
643	int size;	410	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	411
		412	X_LOCK (reslock);
645	size = res_queue.size;	413	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	414	X_UNLOCK (reslock);
647		415
648	if (size)	416	if (size)
649	return;	417	return;
650		418
651	maybe_start_thread ();	419	maybe_start_thread ();
652		420
653	FD_ZERO(&rfd);	421	FD_ZERO (&rfd);
654	FD_SET(respipe [0], &rfd);	422	FD_SET (respipe [0], &rfd);
655		423
656	select (respipe [0] + 1, &rfd, 0, 0, 0);	424	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	425	}
658	}	426	}
659		427
660	static int poll_cb (int max)	428	static int poll_cb (void)
661	{	429	{
662	dSP;	430	int res;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666		431
667	for (;;)	432	do
668	{	433	{
669	while (max <= 0 || count < max)	434	res = eio_poll ();
670	{
671	maybe_start_thread ();
672		435
673	LOCK (reslock);	436	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	437	croak (0);
726
727	poll_wait ();
728
729	max = 0;
730	}	438	}
731		439	while (max_outstanding && max_outstanding <= eio_nreqs ());
732	return count;
733	}
734
735	static void create_pipe ()
736	{
737	if (pipe (respipe))
738	croak ("unable to initialize result pipe");
739
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}
746
747	/*****************************************************************************/
748	/* work around various missing functions */
749
750	#if !HAVE_PREADWRITE
751	# define pread aio_pread
752	# define pwrite aio_pwrite
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (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 = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772		440
773	return res;	441	return res;
774	}	442	}
775		443
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;
854
855	#if HAVE_SENDFILE
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858
859	# elif __freebsd
860	/*
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867
868	if (res < 0 && sbytes)
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897
898	if (res < 0
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900	#if __solaris
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908
909	res = 0;
910
911	while (count)
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917	if (cnt <= 0)
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922
923	cnt = write (ofd, aio_buf, cnt);
924
925	if (cnt <= 0)
926	{
927	if (cnt && !res) res = -1;
928	break;
929	}
930
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;
938	}
939
940	/* read a full directory */
941	static void scandir_ (aio_req req, worker *self)
942	{
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000
1001	/*****************************************************************************/
1002
1003	static void *aio_proc (void *thr_arg)
1004	{
1005	aio_req req;
1006	worker *self = (worker *)thr_arg;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048
1049	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1050	case REQ_FSYNC: req->result = fsync (req->fd); break;
1051	case REQ_READDIR: scandir_ (req, self); break;
1052
1053	case REQ_BUSY:
1054	{
1055	struct timeval tv;
1056
1057	tv.tv_sec = req->fd;
1058	tv.tv_usec = req->fd2;
1059
1060	req->result = select (0, 0, 0, 0, &tv);
1061	}
1062
1063	case REQ_GROUP:
1064	case REQ_NOP:
1065	break;
1066
1067	case REQ_QUIT:
1068	LOCK (wrklock);
1069	worker_free (self);
1070	--started;
1071	UNLOCK (wrklock);
1072	return 0;
1073
1074	default:
1075	req->result = ENOSYS;
1076	break;
1077	}
1078
1079	req->errorno = errno;
1080
1081	LOCK (reslock);
1082
1083	++npending;
1084
1085	if (!reqq_push (&res_queue, req))
1086	/* write a dummy byte to the pipe so fh becomes ready */
1087	write (respipe [1], &respipe, 1);
1088
1089	self->req = 0;
1090	worker_clear (self);
1091
1092	UNLOCK (reslock);
1093	}
1094	}
1095
1096	/*****************************************************************************/
1097
1098	static void atfork_prepare (void)
1099	{
1100	LOCK (wrklock);
1101	LOCK (reqlock);
1102	LOCK (reslock);
1103	#if !HAVE_PREADWRITE
1104	LOCK (preadwritelock);
1105	#endif
1106	#if !HAVE_READDIR_R
1107	LOCK (readdirlock);
1108	#endif
1109	}
1110
1111	static void atfork_parent (void)
1112	{
1113	#if !HAVE_READDIR_R
1114	UNLOCK (readdirlock);
1115	#endif
1116	#if !HAVE_PREADWRITE
1117	UNLOCK (preadwritelock);
1118	#endif
1119	UNLOCK (reslock);
1120	UNLOCK (reqlock);
1121	UNLOCK (wrklock);
1122	}
1123
1124	static void atfork_child (void)	444	static void atfork_child (void)
1125	{	445	{
1126	aio_req prv;
1127
1128	while (prv = reqq_shift (&req_queue))
1129	req_free (prv);
1130
1131	while (prv = reqq_shift (&res_queue))
1132	req_free (prv);
1133
1134	while (wrk_first.next != &wrk_first)
1135	{
1136	worker *wrk = wrk_first.next;
1137
1138	if (wrk->req)
1139	req_free (wrk->req);
1140
1141	worker_clear (wrk);
1142	worker_free (wrk);
1143	}
1144
1145	started = 0;
1146	nreqs = 0;
1147
1148	close (respipe [0]);
1149	close (respipe [1]);
1150	create_pipe ();	446	create_respipe ();
1151
1152	atfork_parent ();
1153	}	447	}
1154		448
1155	#define dREQ \	449	#define dREQ \
1156	aio_req req; \	450	aio_req req; \
1157	int req_pri = next_pri; \	451	int req_pri = next_pri; \
1158	next_pri = DEFAULT_PRI + PRI_BIAS; \	452	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1159	\	453	\
1160	if (SvOK (callback) && !SvROK (callback)) \	454	if (SvOK (callback) && !SvROK (callback)) \
1161	croak ("callback must be undef or of reference type"); \	455	croak ("callback must be undef or of reference type"); \
1162	\	456	\
1163	Newz (0, req, 1, aio_cb); \	457	Newz (0, req, 1, eio_req); \
1164	if (!req) \	458	if (!req) \
1165	croak ("out of memory during aio_req allocation"); \	459	croak ("out of memory during eio_req allocation"); \
1166	\	460	\
1167	req->callback = newSVsv (callback); \	461	req->callback = newSVsv (callback); \
1168	req->pri = req_pri	462	req->pri = req_pri
1169		463
1170	#define REQ_SEND \	464	#define REQ_SEND \
1171	req_send (req); \	465	req_submit (req); \
1172	\	466	\
1173	if (GIMME_V != G_VOID) \	467	if (GIMME_V != G_VOID) \
1174	XPUSHs (req_sv (req, AIO_REQ_KLASS));	468	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1175		469
1176	MODULE = IO::AIO PACKAGE = IO::AIO	470	MODULE = IO::AIO PACKAGE = IO::AIO
1177		471
1178	PROTOTYPES: ENABLE	472	PROTOTYPES: ENABLE
1179		473
1180	BOOT:	474	BOOT:
1181	{	475	{
1182	HV *stash = gv_stashpv ("IO::AIO", 1);	476	stash = gv_stashpv ("IO::AIO", 1);
		477
1183	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	478	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1184	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	479	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1185	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	480	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		481	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		482	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		483	#ifdef _WIN32
		484	X_MUTEX_CHECK (wrklock);
		485	X_MUTEX_CHECK (reslock);
		486	X_MUTEX_CHECK (reqlock);
		487	X_MUTEX_CHECK (reqwait);
		488	X_MUTEX_CHECK (preadwritelock);
		489	X_MUTEX_CHECK (readdirlock);
1186		490
1187	create_pipe ();	491	X_COND_CHECK (reqwait);
1188	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	492	#else
		493	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		494	#endif
1189		495
1190	start_thread ();	496	create_respipe ();
		497
		498	if (eio_init (want_poll, done_poll) < 0)
		499	croak ("IO::AIO: unable to initialise eio library");
		500
		501	/* atfork child called in fifo order, so before eio's handler */
		502	X_THREAD_ATFORK (0, 0, atfork_child);
1191	}	503	}
		504
		505	void
		506	max_poll_reqs (int nreqs)
		507	PROTOTYPE: $
		508	CODE:
		509	eio_set_max_poll_reqs (nreqs);
		510
		511	void
		512	max_poll_time (double nseconds)
		513	PROTOTYPE: $
		514	CODE:
		515	eio_set_max_poll_time (nseconds);
1192		516
1193	void	517	void
1194	min_parallel (int nthreads)	518	min_parallel (int nthreads)
1195	PROTOTYPE: $	519	PROTOTYPE: $
		520	CODE:
		521	eio_set_min_parallel (nthreads);
1196		522
1197	void	523	void
1198	max_parallel (int nthreads)	524	max_parallel (int nthreads)
1199	PROTOTYPE: $	525	PROTOTYPE: $
		526	CODE:
		527	eio_set_max_parallel (nthreads);
1200		528
1201	int	529	void
		530	max_idle (int nthreads)
		531	PROTOTYPE: $
		532	CODE:
		533	eio_set_max_idle (nthreads);
		534
		535	void
1202	max_outstanding (int maxreqs)	536	max_outstanding (int maxreqs)
1203	PROTOTYPE: $	537	PROTOTYPE: $
1204	CODE:	538	CODE:
1205	RETVAL = max_outstanding;
1206	max_outstanding = maxreqs;	539	max_outstanding = maxreqs;
1207	OUTPUT:
1208	RETVAL
1209		540
1210	void	541	void
1211	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	542	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1212	SV * pathname
1213	int flags
1214	int mode
1215	SV * callback
1216	PROTOTYPE: $$$;$	543	PROTOTYPE: $$$;$
1217	PPCODE:	544	PPCODE:
1218	{	545	{
1219	dREQ;	546	dREQ;
1220		547
1221	req->type = REQ_OPEN;	548	req->type = EIO_OPEN;
1222	req->data = newSVsv (pathname);	549	req->sv1 = newSVsv (pathname);
1223	req->dataptr = SvPVbyte_nolen (req->data);	550	req->ptr1 = SvPVbyte_nolen (req->sv1);
1224	req->fd = flags;	551	req->int1 = flags;
1225	req->mode = mode;	552	req->int2 = mode;
1226		553
1227	REQ_SEND;	554	REQ_SEND;
1228	}	555	}
1229		556
1230	void	557	void
1231	aio_close (fh,callback=&PL_sv_undef)	558	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1232	SV * fh
1233	SV * callback
1234	PROTOTYPE: $;$	559	PROTOTYPE: $;$
1235	ALIAS:	560	ALIAS:
1236	aio_close = REQ_CLOSE
1237	aio_fsync = REQ_FSYNC	561	aio_fsync = EIO_FSYNC
1238	aio_fdatasync = REQ_FDATASYNC	562	aio_fdatasync = EIO_FDATASYNC
1239	PPCODE:	563	PPCODE:
1240	{	564	{
1241	dREQ;	565	dREQ;
1242		566
1243	req->type = ix;	567	req->type = ix;
1244	req->fh = newSVsv (fh);	568	req->sv1 = newSVsv (fh);
1245	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	569	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1246		570
1247	REQ_SEND (req);	571	REQ_SEND (req);
1248	}	572	}
1249		573
1250	void	574	void
		575	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		576	PROTOTYPE: $;$
		577	PPCODE:
		578	{
		579	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		580	dREQ;
		581
		582	if (close_pipe < 0)
		583	{
		584	int pipefd [2];
		585
		586	if (pipe (pipefd) < 0
		587	|| close (pipefd [1]) < 0
		588	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		589	abort (); /*D*/
		590
		591	close_pipe = pipefd [0];
		592	}
		593
		594	req->type = EIO_DUP2;
		595	req->int1 = close_pipe;
		596	req->sv2 = newSVsv (fh);
		597	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		598
		599	REQ_SEND (req);
		600	}
		601
		602	void
1251	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	603	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1252	SV * fh
1253	UV offset
1254	UV length
1255	SV * data
1256	UV dataoffset
1257	SV * callback
1258	ALIAS:	604	ALIAS:
1259	aio_read = REQ_READ	605	aio_read = EIO_READ
1260	aio_write = REQ_WRITE	606	aio_write = EIO_WRITE
1261	PROTOTYPE: $$$$$;$	607	PROTOTYPE: $$$$$;$
1262	PPCODE:	608	PPCODE:
1263	{	609	{
1264	aio_req req;
1265	STRLEN svlen;	610	STRLEN svlen;
1266	char *svptr = SvPVbyte (data, svlen);	611	char *svptr = SvPVbyte (data, svlen);
		612	UV len = SvUV (length);
1267		613
1268	SvUPGRADE (data, SVt_PV);	614	SvUPGRADE (data, SVt_PV);
1269	SvPOK_on (data);	615	SvPOK_on (data);
1270		616
1271	if (dataoffset < 0)	617	if (dataoffset < 0)
1272	dataoffset += svlen;	618	dataoffset += svlen;
1273		619
1274	if (dataoffset < 0 || dataoffset > svlen)	620	if (dataoffset < 0 || dataoffset > svlen)
1275	croak ("data offset outside of string");	621	croak ("dataoffset outside of data scalar");
1276		622
1277	if (ix == REQ_WRITE)	623	if (ix == EIO_WRITE)
1278	{	624	{
1279	/* write: check length and adjust. */	625	/* write: check length and adjust. */
1280	if (length < 0 || length + dataoffset > svlen)	626	if (!SvOK (length) || len + dataoffset > svlen)
1281	length = svlen - dataoffset;	627	len = svlen - dataoffset;
1282	}	628	}
1283	else	629	else
1284	{	630	{
1285	/* read: grow scalar as necessary */	631	/* read: grow scalar as necessary */
1286	svptr = SvGROW (data, length + dataoffset);	632	svptr = SvGROW (data, len + dataoffset + 1);
1287	}	633	}
1288		634
1289	if (length < 0)	635	if (len < 0)
1290	croak ("length must not be negative");	636	croak ("length must not be negative");
1291		637
1292	{	638	{
1293	dREQ;	639	dREQ;
1294		640
1295	req->type = ix;	641	req->type = ix;
1296	req->fh = newSVsv (fh);	642	req->sv1 = newSVsv (fh);
1297	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	643	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1298	: IoOFP (sv_2io (fh)));	644	: IoOFP (sv_2io (fh)));
		645	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1299	req->offset = offset;	646	req->size = len;
1300	req->length = length;
1301	req->data = SvREFCNT_inc (data);	647	req->sv2 = SvREFCNT_inc (data);
1302	req->dataptr = (char *)svptr + dataoffset;	648	req->ptr2 = (char *)svptr + dataoffset;
		649	req->stroffset = dataoffset;
1303		650
1304	if (!SvREADONLY (data))	651	if (!SvREADONLY (data))
1305	{	652	{
1306	SvREADONLY_on (data);	653	SvREADONLY_on (data);
1307	req->data2ptr = (void *)data;	654	req->flags |= FLAG_SV2_RO_OFF;
1308	}	655	}
1309		656
1310	REQ_SEND;	657	REQ_SEND;
1311	}	658	}
1312	}	659	}
1313		660
1314	void	661	void
		662	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		663	PROTOTYPE: $$;$
		664	PPCODE:
		665	{
		666	SV *data;
		667	dREQ;
		668
		669	data = newSV (NAME_MAX);
		670	SvPOK_on (data);
		671
		672	req->type = EIO_READLINK;
		673	req->sv1 = newSVsv (path);
		674	req->ptr1 = SvPVbyte_nolen (req->sv1);
		675	req->sv2 = data;
		676	req->ptr2 = SvPVbyte_nolen (data);
		677
		678	REQ_SEND;
		679	}
		680
		681	void
1315	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	682	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1316	SV * out_fh
1317	SV * in_fh
1318	UV in_offset
1319	UV length
1320	SV * callback
1321	PROTOTYPE: $$$$;$	683	PROTOTYPE: $$$$;$
1322	PPCODE:	684	PPCODE:
1323	{	685	{
1324	dREQ;	686	dREQ;
1325		687
1326	req->type = REQ_SENDFILE;	688	req->type = EIO_SENDFILE;
1327	req->fh = newSVsv (out_fh);	689	req->sv1 = newSVsv (out_fh);
1328	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	690	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1329	req->fh2 = newSVsv (in_fh);	691	req->sv2 = newSVsv (in_fh);
1330	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	692	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1331	req->offset = in_offset;	693	req->offs = SvVAL64 (in_offset);
1332	req->length = length;	694	req->size = length;
1333		695
1334	REQ_SEND;	696	REQ_SEND;
1335	}	697	}
1336		698
1337	void	699	void
1338	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	700	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1339	SV * fh
1340	UV offset
1341	IV length
1342	SV * callback
1343	PROTOTYPE: $$$;$	701	PROTOTYPE: $$$;$
1344	PPCODE:	702	PPCODE:
1345	{	703	{
1346	dREQ;	704	dREQ;
1347		705
1348	req->type = REQ_READAHEAD;	706	req->type = EIO_READAHEAD;
1349	req->fh = newSVsv (fh);	707	req->sv1 = newSVsv (fh);
1350	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1351	req->offset = offset;	709	req->offs = SvVAL64 (offset);
1352	req->length = length;	710	req->size = length;
1353		711
1354	REQ_SEND;	712	REQ_SEND;
1355	}	713	}
1356		714
1357	void	715	void
1358	aio_stat (fh_or_path,callback=&PL_sv_undef)	716	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1359	SV * fh_or_path
1360	SV * callback
1361	ALIAS:	717	ALIAS:
1362	aio_stat = REQ_STAT	718	aio_stat = EIO_STAT
1363	aio_lstat = REQ_LSTAT	719	aio_lstat = EIO_LSTAT
1364	PPCODE:	720	PPCODE:
1365	{	721	{
1366	dREQ;	722	dREQ;
1367		723
1368	New (0, req->statdata, 1, Stat_t);	724	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1369	if (!req->statdata)	725	if (!req->ptr2)
1370	{	726	{
1371	req_free (req);	727	req_destroy (req);
1372	croak ("out of memory during aio_req->statdata allocation");	728	croak ("out of memory during aio_stat statdata allocation");
1373	}	729	}
		730
		731	req->flags |= EIO_FLAG_PTR2_FREE;
		732	req->sv1 = newSVsv (fh_or_path);
1374		733
1375	if (SvPOK (fh_or_path))	734	if (SvPOK (fh_or_path))
1376	{	735	{
1377	req->type = ix;	736	req->type = ix;
1378	req->data = newSVsv (fh_or_path);
1379	req->dataptr = SvPVbyte_nolen (req->data);	737	req->ptr1 = SvPVbyte_nolen (req->sv1);
1380	}	738	}
1381	else	739	else
1382	{	740	{
1383	req->type = REQ_FSTAT;	741	req->type = EIO_FSTAT;
1384	req->fh = newSVsv (fh_or_path);
1385	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1386	}	743	}
1387		744
1388	REQ_SEND;	745	REQ_SEND;
1389	}	746	}
1390		747
1391	void	748	void
		749	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		750	PPCODE:
		751	{
		752	dREQ;
		753
		754	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		755	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		756	req->sv1 = newSVsv (fh_or_path);
		757
		758	if (SvPOK (fh_or_path))
		759	{
		760	req->type = EIO_UTIME;
		761	req->ptr1 = SvPVbyte_nolen (req->sv1);
		762	}
		763	else
		764	{
		765	req->type = EIO_FUTIME;
		766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		767	}
		768
		769	REQ_SEND;
		770	}
		771
		772	void
		773	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		774	PPCODE:
		775	{
		776	dREQ;
		777
		778	req->sv1 = newSVsv (fh_or_path);
		779	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		780
		781	if (SvPOK (fh_or_path))
		782	{
		783	req->type = EIO_TRUNCATE;
		784	req->ptr1 = SvPVbyte_nolen (req->sv1);
		785	}
		786	else
		787	{
		788	req->type = EIO_FTRUNCATE;
		789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		790	}
		791
		792	REQ_SEND;
		793	}
		794
		795	void
		796	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		797	ALIAS:
		798	aio_chmod = EIO_CHMOD
		799	aio_fchmod = EIO_FCHMOD
		800	aio_mkdir = EIO_MKDIR
		801	PPCODE:
		802	{
		803	dREQ;
		804
		805	req->type = ix;
		806	req->int2 = mode;
		807	req->sv1 = newSVsv (fh_or_path);
		808
		809	if (ix == EIO_FCHMOD)
		810	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		811	else
		812	req->ptr1 = SvPVbyte_nolen (req->sv1);
		813
		814	REQ_SEND;
		815	}
		816
		817	void
		818	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		819	PPCODE:
		820	{
		821	dREQ;
		822
		823	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		824	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		825	req->sv1 = newSVsv (fh_or_path);
		826
		827	if (SvPOK (fh_or_path))
		828	{
		829	req->type = EIO_CHOWN;
		830	req->ptr1 = SvPVbyte_nolen (req->sv1);
		831	}
		832	else
		833	{
		834	req->type = EIO_FCHOWN;
		835	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		836	}
		837
		838	REQ_SEND;
		839	}
		840
		841	void
1392	aio_unlink (pathname,callback=&PL_sv_undef)	842	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1393	SV * pathname
1394	SV * callback
1395	ALIAS:	843	ALIAS:
1396	aio_unlink = REQ_UNLINK	844	aio_unlink = EIO_UNLINK
1397	aio_rmdir = REQ_RMDIR	845	aio_rmdir = EIO_RMDIR
1398	aio_readdir = REQ_READDIR	846	aio_readdir = EIO_READDIR
1399	PPCODE:	847	PPCODE:
1400	{	848	{
1401	dREQ;	849	dREQ;
1402		850
1403	req->type = ix;	851	req->type = ix;
1404	req->data = newSVsv (pathname);	852	req->sv1 = newSVsv (pathname);
1405	req->dataptr = SvPVbyte_nolen (req->data);	853	req->ptr1 = SvPVbyte_nolen (req->sv1);
		854
		855	REQ_SEND;
		856	}
		857
		858	void
		859	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		860	ALIAS:
		861	aio_link = EIO_LINK
		862	aio_symlink = EIO_SYMLINK
		863	aio_rename = EIO_RENAME
		864	PPCODE:
		865	{
		866	dREQ;
		867
		868	req->type = ix;
		869	req->sv1 = newSVsv (oldpath);
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	req->sv2 = newSVsv (newpath);
		872	req->ptr2 = SvPVbyte_nolen (req->sv2);
1406		873
1407	REQ_SEND;	874	REQ_SEND;
1408	}	875	}
1409		876
1410	void	877	void
1411	aio_link (oldpath,newpath,callback=&PL_sv_undef)	878	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1412	SV * oldpath
1413	SV * newpath
1414	SV * callback
1415	ALIAS:
1416	aio_link = REQ_LINK
1417	aio_symlink = REQ_SYMLINK
1418	aio_rename = REQ_RENAME
1419	PPCODE:	879	PPCODE:
1420	{	880	{
1421	dREQ;	881	dREQ;
1422		882
1423	req->type = ix;	883	req->type = EIO_MKNOD;
1424	req->fh = newSVsv (oldpath);	884	req->sv1 = newSVsv (pathname);
1425	req->data2ptr = SvPVbyte_nolen (req->fh);	885	req->ptr1 = SvPVbyte_nolen (req->sv1);
1426	req->data = newSVsv (newpath);	886	req->int2 = (mode_t)mode;
1427	req->dataptr = SvPVbyte_nolen (req->data);	887	req->offs = dev;
1428		888
1429	REQ_SEND;	889	REQ_SEND;
1430	}	890	}
1431		891
1432	void	892	void
1433	aio_busy (delay,callback=&PL_sv_undef)	893	aio_busy (double delay, SV *callback=&PL_sv_undef)
1434	double delay
1435	SV * callback
1436	PPCODE:	894	PPCODE:
1437	{	895	{
1438	dREQ;	896	dREQ;
1439		897
1440	req->type = REQ_BUSY;	898	req->type = EIO_BUSY;
1441	req->fd = delay < 0. ? 0 : delay;	899	req->nv1 = delay < 0. ? 0. : delay;
1442	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1443		900
1444	REQ_SEND;	901	REQ_SEND;
1445	}	902	}
1446		903
1447	void	904	void
1448	aio_group (callback=&PL_sv_undef)	905	aio_group (SV *callback=&PL_sv_undef)
1449	SV * callback
1450	PROTOTYPE: ;$	906	PROTOTYPE: ;$
1451	PPCODE:	907	PPCODE:
1452	{	908	{
1453	dREQ;	909	dREQ;
1454		910
1455	req->type = REQ_GROUP;	911	req->type = EIO_GROUP;
		912
1456	req_send (req);	913	eio_submit (req);
1457
1458	XPUSHs (req_sv (req, AIO_GRP_KLASS));	914	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1459	}	915	}
1460		916
1461	void	917	void
1462	aio_nop (callback=&PL_sv_undef)	918	aio_nop (SV *callback=&PL_sv_undef)
1463	SV * callback	919	ALIAS:
		920	aio_nop = EIO_NOP
		921	aio_sync = EIO_SYNC
1464	PPCODE:	922	PPCODE:
1465	{	923	{
1466	dREQ;	924	dREQ;
1467		925
1468	req->type = REQ_NOP;	926	req->type = ix;
1469		927
1470	REQ_SEND;	928	REQ_SEND;
1471	}	929	}
1472		930
1473	int	931	int
1474	aioreq_pri (int pri = 0)	932	aioreq_pri (int pri = 0)
1475	PROTOTYPE: ;$	933	PROTOTYPE: ;$
1476	CODE:	934	CODE:
1477	RETVAL = next_pri - PRI_BIAS;	935	RETVAL = next_pri - EIO_PRI_BIAS;
1478	if (items > 0)	936	if (items > 0)
1479	{	937	{
1480	if (pri < PRI_MIN) pri = PRI_MIN;	938	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1481	if (pri > PRI_MAX) pri = PRI_MAX;	939	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1482	next_pri = pri + PRI_BIAS;	940	next_pri = pri + EIO_PRI_BIAS;
1483	}	941	}
1484	OUTPUT:	942	OUTPUT:
1485	RETVAL	943	RETVAL
1486		944
1487	void	945	void
1488	aioreq_nice (int nice = 0)	946	aioreq_nice (int nice = 0)
1489	CODE:	947	CODE:
1490	nice = next_pri - nice;	948	nice = next_pri - nice;
1491	if (nice < PRI_MIN) nice = PRI_MIN;	949	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1492	if (nice > PRI_MAX) nice = PRI_MAX;	950	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1493	next_pri = nice + PRI_BIAS;	951	next_pri = nice + EIO_PRI_BIAS;
1494		952
1495	void	953	void
1496	flush ()	954	flush ()
1497	PROTOTYPE:	955	PROTOTYPE:
1498	CODE:	956	CODE:
1499	while (nreqs)	957	while (eio_nreqs ())
1500	{	958	{
1501	poll_wait ();	959	poll_wait ();
1502	poll_cb (0);	960	poll_cb ();
1503	}	961	}
1504		962
1505	void	963	int
1506	poll()	964	poll()
1507	PROTOTYPE:	965	PROTOTYPE:
1508	CODE:	966	CODE:
1509	if (nreqs)
1510	{
1511	poll_wait ();	967	poll_wait ();
1512	poll_cb (0);	968	RETVAL = poll_cb ();
1513	}	969	OUTPUT:
		970	RETVAL
1514		971
1515	int	972	int
1516	poll_fileno()	973	poll_fileno()
1517	PROTOTYPE:	974	PROTOTYPE:
1518	CODE:	975	CODE:
…		…
1522		979
1523	int	980	int
1524	poll_cb(...)	981	poll_cb(...)
1525	PROTOTYPE:	982	PROTOTYPE:
1526	CODE:	983	CODE:
1527	RETVAL = poll_cb (0);	984	RETVAL = poll_cb ();
1528	OUTPUT:	985	OUTPUT:
1529	RETVAL	986	RETVAL
1530		987
1531	int
1532	poll_some(int max = 0)
1533	PROTOTYPE: $
1534	CODE:
1535	RETVAL = poll_cb (max);
1536	OUTPUT:
1537	RETVAL
1538
1539	void	988	void
1540	poll_wait()	989	poll_wait()
1541	PROTOTYPE:	990	PROTOTYPE:
1542	CODE:	991	CODE:
1543	if (nreqs)
1544	poll_wait ();	992	poll_wait ();
1545		993
1546	int	994	int
1547	nreqs()	995	nreqs()
1548	PROTOTYPE:	996	PROTOTYPE:
1549	CODE:	997	CODE:
1550	RETVAL = nreqs;	998	RETVAL = eio_nreqs ();
1551	OUTPUT:	999	OUTPUT:
1552	RETVAL	1000	RETVAL
1553		1001
1554	int	1002	int
1555	nready()	1003	nready()
1556	PROTOTYPE:	1004	PROTOTYPE:
1557	CODE:	1005	CODE:
1558	RETVAL = get_nready ();	1006	RETVAL = eio_nready ();
1559	OUTPUT:	1007	OUTPUT:
1560	RETVAL	1008	RETVAL
1561		1009
1562	int	1010	int
1563	npending()	1011	npending()
1564	PROTOTYPE:	1012	PROTOTYPE:
1565	CODE:	1013	CODE:
1566	RETVAL = get_npending ();	1014	RETVAL = eio_npending ();
1567	OUTPUT:	1015	OUTPUT:
1568	RETVAL	1016	RETVAL
1569		1017
		1018	int
		1019	nthreads()
		1020	PROTOTYPE:
		1021	CODE:
		1022	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1023	RETVAL = started;
		1024	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1025	OUTPUT:
		1026	RETVAL
		1027
		1028	void _on_next_submit (SV *cb)
		1029	CODE:
		1030	SvREFCNT_dec (on_next_submit);
		1031	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1032
1570	PROTOTYPES: DISABLE	1033	PROTOTYPES: DISABLE
1571		1034
1572	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1035	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1573		1036
1574	void	1037	void
1575	cancel (aio_req_ornot req)	1038	cancel (aio_req_ornot req)
1576	CODE:	1039	CODE:
1577	req_cancel (req);	1040	eio_cancel (req);
1578		1041
1579	void	1042	void
1580	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1043	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1581	CODE:	1044	CODE:
1582	SvREFCNT_dec (req->callback);	1045	SvREFCNT_dec (req->callback);
…		…
1587	void	1050	void
1588	add (aio_req grp, ...)	1051	add (aio_req grp, ...)
1589	PPCODE:	1052	PPCODE:
1590	{	1053	{
1591	int i;	1054	int i;
1592	aio_req req;
1593		1055
1594	if (grp->fd == 2)	1056	if (grp->int1 == 2)
1595	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1057	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1596		1058
1597	for (i = 1; i < items; ++i )	1059	for (i = 1; i < items; ++i )
1598	{	1060	{
		1061	aio_req req;
		1062
1599	if (GIMME_V != G_VOID)	1063	if (GIMME_V != G_VOID)
1600	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1064	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1601		1065
1602	req = SvAIO_REQ (ST (i));	1066	req = SvAIO_REQ (ST (i));
1603		1067
1604	if (req)	1068	if (req)
1605	{	1069	eio_grp_add (grp, req);
1606	++grp->length;
1607	req->grp = grp;
1608
1609	req->grp_prev = 0;
1610	req->grp_next = grp->grp_first;
1611
1612	if (grp->grp_first)
1613	grp->grp_first->grp_prev = req;
1614
1615	grp->grp_first = req;
1616	}
1617	}	1070	}
1618	}	1071	}
1619		1072
1620	void	1073	void
1621	cancel_subs (aio_req_ornot req)	1074	cancel_subs (aio_req_ornot req)
…		…
1634	av = newAV ();	1087	av = newAV ();
1635		1088
1636	for (i = 1; i < items; ++i )	1089	for (i = 1; i < items; ++i )
1637	av_push (av, newSVsv (ST (i)));	1090	av_push (av, newSVsv (ST (i)));
1638		1091
1639	SvREFCNT_dec (grp->data);	1092	SvREFCNT_dec (grp->sv1);
1640	grp->data = (SV *)av;	1093	grp->sv1 = (SV *)av;
1641	}	1094	}
1642		1095
1643	void	1096	void
1644	errno (aio_req grp, int errorno = errno)	1097	errno (aio_req grp, int errorno = errno)
1645	CODE:	1098	CODE:
1646	grp->errorno = errorno;	1099	grp->errorno = errorno;
1647		1100
1648	void	1101	void
1649	limit (aio_req grp, int limit)	1102	limit (aio_req grp, int limit)
1650	CODE:	1103	CODE:
1651	grp->fd2 = limit;	1104	eio_grp_limit (grp, limit);
1652	aio_grp_feed (grp);
1653		1105
1654	void	1106	void
1655	feed (aio_req grp, SV *callback=&PL_sv_undef)	1107	feed (aio_req grp, SV *callback=&PL_sv_undef)
1656	CODE:	1108	CODE:
1657	{	1109	{
1658	SvREFCNT_dec (grp->fh2);	1110	SvREFCNT_dec (grp->sv2);
1659	grp->fh2 = newSVsv (callback);	1111	grp->sv2 = newSVsv (callback);
1660		1112
1661	if (grp->fd2 <= 0)	1113	if (grp->int2 <= 0)
1662	grp->fd2 = 2;	1114	grp->int2 = 2;
1663		1115
1664	aio_grp_feed (grp);	1116	eio_grp_limit (grp, grp->int2);
1665	}	1117	}
1666		1118

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines