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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 1.125 by root, Thu Jun 19 09:05:43 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	static HV *stash;
57	/* care for broken platforms, e.g. windows */	86	typedef SV SV8; /* byte-sv, used for argument-checking */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDREAD_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDREAD_UNSAFE 0
76	# else
77	# define WORDREAD_UNSAFE 1
78	# endif
79	#endif
80
81	/* buffer size for various temporary buffers */
82	#define AIO_BUFSIZE 65536
83
84	#define dBUF \
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	enum {
93	REQ_QUIT,
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};
105		87
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	88	#define AIO_REQ_KLASS "IO::AIO::REQ"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"	89	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		90
109	typedef struct aio_cb	91	#define EIO_REQ_MEMBERS \
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;	92	SV *callback; \
114	SV *fh, *fh2;	93	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;	94	STRLEN stroffset; \
122	int type;	95	SV *self;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126		96
127	unsigned char flags;	97	#define EIO_NO_WRAPPERS 1
128	unsigned char pri;
129		98
130	SV *self; /* the perl counterpart of this request, if any */	99	#include "libeio/eio.h"
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	100
132	} aio_cb;	101	static int req_invoke (eio_req *req);
		102	#define EIO_FINISH(req) req_invoke (req)
		103	static void aio_grp_feed (eio_req *grp);
		104	#define EIO_FEED(req) aio_grp_feed (req)
		105	static void req_destroy (eio_req *grp);
		106	#define EIO_DESTROY(req) req_destroy (req)
133		107
134	enum {	108	enum {
135	FLAG_CANCELLED = 0x01,	109	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
136	};	110	};
137		111
		112	#include "libeio/eio.c"
		113
138	typedef aio_cb *aio_req;	114	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	115	typedef eio_req *aio_req_ornot;
140		116
141	enum {	117	static SV *on_next_submit;
142	PRI_MIN = -4,	118	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	119	static int max_outstanding;
144		120
145	DEFAULT_PRI = 0,	121	static int respipe_osf [2], respipe [2] = { -1, -1 };
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		122
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);	123	static void req_destroy (aio_req req);
300	static void req_cancel (aio_req req);	124	static void req_cancel (aio_req req);
		125
		126	static void want_poll (void)
		127	{
		128	/* write a dummy byte to the pipe so fh becomes ready */
		129	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		130	}
		131
		132	static void done_poll (void)
		133	{
		134	/* read any signals sent by the worker threads */
		135	char buf [4];
		136	while (respipe_read (respipe [0], buf, 4) == 4)
		137	;
		138	}
301		139
302	/* must be called at most once */	140	/* must be called at most once */
303	static SV *req_sv (aio_req req, const char *klass)	141	static SV *req_sv (aio_req req, const char *klass)
304	{	142	{
305	if (!req->self)	143	if (!req->self)
…		…
323	return mg ? (aio_req)mg->mg_ptr : 0;	161	return mg ? (aio_req)mg->mg_ptr : 0;
324	}	162	}
325		163
326	static void aio_grp_feed (aio_req grp)	164	static void aio_grp_feed (aio_req grp)
327	{	165	{
328	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	166	if (grp->sv2 && SvOK (grp->sv2))
329	{	167	{
330	int old_len = grp->length;
331
332	if (grp->fh2 && SvOK (grp->fh2))
333	{
334	dSP;	168	dSP;
335		169
336	ENTER;	170	ENTER;
337	SAVETMPS;	171	SAVETMPS;
338	PUSHMARK (SP);	172	PUSHMARK (SP);
339	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	173	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
340	PUTBACK;	174	PUTBACK;
341	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	175	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
342	SPAGAIN;	176	SPAGAIN;
343	FREETMPS;	177	FREETMPS;
344	LEAVE;	178	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	}	179	}
355	}	180	}
356		181
357	static void aio_grp_dec (aio_req grp)	182	static void req_submit (eio_req *req)
358	{	183	{
359	--grp->length;	184	eio_submit (req);
360		185
361	/* call feeder, if applicable */	186	if (on_next_submit)
362	aio_grp_feed (grp);
363
364	/* finish, if done */
365	if (!grp->length && grp->fd)
366	{	187	{
367	req_invoke (grp);	188	dSP;
368	req_free (grp);	189	SV *cb = sv_2mortal (on_next_submit);
		190
		191	on_next_submit = 0;
		192
		193	PUSHMARK (SP);
		194	PUTBACK;
		195	call_sv (cb, G_DISCARD | G_EVAL);
369	}	196	}
370	}	197	}
371		198
372	static void req_invoke (aio_req req)	199	static int req_invoke (eio_req *req)
373	{	200	{
374	dSP;	201	dSP;
375		202
		203	if (req->flags & FLAG_SV2_RO_OFF)
		204	SvREADONLY_off (req->sv2);
		205
376	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	206	if (!EIO_CANCELLED (req) && SvOK (req->callback))
377	{	207	{
378	ENTER;	208	ENTER;
379	SAVETMPS;	209	SAVETMPS;
380	PUSHMARK (SP);	210	PUSHMARK (SP);
381	EXTEND (SP, 1);	211	EXTEND (SP, 1);
382		212
383	switch (req->type)	213	switch (req->type)
384	{	214	{
385	case REQ_READDIR:	215	case EIO_READDIR:
386	{	216	{
387	SV *rv = &PL_sv_undef;	217	SV *rv = &PL_sv_undef;
388		218
389	if (req->result >= 0)	219	if (req->result >= 0)
390	{	220	{
391	int i;	221	int i;
392	char *buf = req->data2ptr;	222	char *buf = req->ptr2;
393	AV *av = newAV ();	223	AV *av = newAV ();
394		224
395	av_extend (av, req->result - 1);	225	av_extend (av, req->result - 1);
396		226
397	for (i = 0; i < req->result; ++i)	227	for (i = 0; i < req->result; ++i)
…		…
407		237
408	PUSHs (rv);	238	PUSHs (rv);
409	}	239	}
410	break;	240	break;
411		241
412	case REQ_OPEN:	242	case EIO_OPEN:
413	{	243	{
414	/* convert fd to fh */	244	/* convert fd to fh */
415	SV *fh;	245	SV *fh = &PL_sv_undef;
416		246
417	PUSHs (sv_2mortal (newSViv (req->result)));	247	if (req->result >= 0)
418	PUTBACK;	248	{
419	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	249	GV *gv = (GV *)sv_newmortal ();
420	SPAGAIN;	250	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		251	char sym [64];
		252	int symlen;
		253
		254	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		255	gv_init (gv, stash, sym, symlen, 0);
421		256
422	fh = SvREFCNT_inc (POPs);	257	symlen = snprintf (
		258	sym,
		259	sizeof (sym),
		260	"%s&=%d",
		261	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		262	req->result
		263	);
423		264
		265	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		266	fh = (SV *)gv;
		267	}
		268
424	PUSHMARK (SP);	269	PUSHs (fh);
425	XPUSHs (sv_2mortal (fh));
426	}	270	}
427	break;	271	break;
428		272
429	case REQ_GROUP:	273	case EIO_GROUP:
430	req->fd = 2; /* mark group as finished */	274	req->int1 = 2; /* mark group as finished */
431		275
432	if (req->data)	276	if (req->sv1)
433	{	277	{
434	int i;	278	int i;
435	AV *av = (AV *)req->data;	279	AV *av = (AV *)req->sv1;
436		280
437	EXTEND (SP, AvFILL (av) + 1);	281	EXTEND (SP, AvFILL (av) + 1);
438	for (i = 0; i <= AvFILL (av); ++i)	282	for (i = 0; i <= AvFILL (av); ++i)
439	PUSHs (*av_fetch (av, i, 0));	283	PUSHs (*av_fetch (av, i, 0));
440	}	284	}
441	break;	285	break;
442		286
443	case REQ_NOP:	287	case EIO_NOP:
444	case REQ_BUSY:	288	case EIO_BUSY:
445	break;	289	break;
		290
		291	case EIO_READLINK:
		292	if (req->result > 0)
		293	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		294	break;
		295
		296	case EIO_STAT:
		297	case EIO_LSTAT:
		298	case EIO_FSTAT:
		299	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		300	PL_laststatval = req->result;
		301	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		302	PUSHs (sv_2mortal (newSViv (req->result)));
		303	break;
		304
		305	case EIO_READ:
		306	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		307	*SvEND (req->sv2) = 0;
		308	PUSHs (sv_2mortal (newSViv (req->result)));
		309	break;
		310
		311	case EIO_DUP2:
		312	if (req->result > 0)
		313	req->result = 0;
		314	/* FALLTHROUGH */
446		315
447	default:	316	default:
448	PUSHs (sv_2mortal (newSViv (req->result)));	317	PUSHs (sv_2mortal (newSViv (req->result)));
449	break;	318	break;
450	}	319	}
451		320
452	errno = req->errorno;	321	errno = req->errorno;
453		322
454	PUTBACK;	323	PUTBACK;
455	call_sv (req->callback, G_VOID | G_EVAL);	324	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
456	SPAGAIN;	325	SPAGAIN;
457		326
458	FREETMPS;	327	FREETMPS;
459	LEAVE;	328	LEAVE;
		329
		330	PUTBACK;
460	}	331	}
461		332
462	if (req->grp)	333	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	}	334	}
482		335
483	static void req_free (aio_req req)	336	static void req_destroy (aio_req req)
484	{	337	{
485	if (req->self)	338	if (req->self)
486	{	339	{
487	sv_unmagic (req->self, PERL_MAGIC_ext);	340	sv_unmagic (req->self, PERL_MAGIC_ext);
488	SvREFCNT_dec (req->self);	341	SvREFCNT_dec (req->self);
489	}	342	}
490		343
491	SvREFCNT_dec (req->data);
492	SvREFCNT_dec (req->fh);	344	SvREFCNT_dec (req->sv1);
493	SvREFCNT_dec (req->fh2);	345	SvREFCNT_dec (req->sv2);
494	SvREFCNT_dec (req->callback);	346	SvREFCNT_dec (req->callback);
495	Safefree (req->statdata);
496
497	if (req->type == REQ_READDIR)
498	free (req->data2ptr);
499		347
500	Safefree (req);	348	Safefree (req);
501	}	349	}
502		350
503	static void req_cancel_subs (aio_req grp)	351	static void req_cancel_subs (aio_req grp)
504	{	352	{
505	aio_req sub;	353	aio_req sub;
506		354
507	if (grp->type != REQ_GROUP)	355	if (grp->type != EIO_GROUP)
508	return;	356	return;
509		357
510	SvREFCNT_dec (grp->fh2);	358	SvREFCNT_dec (grp->sv2);
511	grp->fh2 = 0;	359	grp->sv2 = 0;
512		360
513	for (sub = grp->grp_first; sub; sub = sub->grp_next)	361	eio_grp_cancel (grp);
514	req_cancel (sub);
515	}	362	}
516		363
517	static void req_cancel (aio_req req)	364	#ifdef USE_SOCKETS_AS_HANDLES
518	{	365	# define TO_SOCKET(x) (win32_get_osfhandle (x))
519	req->flags |= FLAG_CANCELLED;	366	#else
520		367	# 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	368	#endif
542		369
543	sigfillset (&fullsigset);	370	static void
		371	create_respipe (void)
		372	{
		373	int old_readfd = respipe [0];
544		374
545	LOCK (wrklock);	375	if (respipe [1] >= 0)
546	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	376	respipe_close (TO_SOCKET (respipe [1]));
547		377
548	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	378	#ifdef _WIN32
		379	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		380	#else
		381	if (pipe (respipe))
		382	#endif
		383	croak ("unable to initialize result pipe");
		384
		385	if (old_readfd >= 0)
549	{	386	{
550	wrk->prev = &wrk_first;	387	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
551	wrk->next = wrk_first.next;	388	croak ("unable to initialize result pipe(2)");
552	wrk_first.next->prev = wrk;	389
553	wrk_first.next = wrk;	390	respipe_close (respipe [0]);
554	++started;	391	respipe [0] = old_readfd;
555	}	392	}
556	else
557	free (wrk);
558		393
559	sigprocmask (SIG_SETMASK, &oldsigset, 0);	394	#ifdef _WIN32
560	UNLOCK (wrklock);	395	int arg = 1;
561	}	396	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		397	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		398	#else
		399	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		400	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		401	#endif
		402	croak ("unable to initialize result pipe(3)");
562		403
563	static void maybe_start_thread ()	404	respipe_osf [0] = TO_SOCKET (respipe [0]);
564	{	405	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	}	406	}
574		407
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 ()	408	static void poll_wait (void)
623	{	409	{
624	fd_set rfd;	410	fd_set rfd;
625		411
626	while (nreqs)	412	while (eio_nreqs ())
627	{	413	{
628	int size;	414	int size;
629	if (WORDREAD_UNSAFE) LOCK (reslock);	415
		416	X_LOCK (reslock);
630	size = res_queue.size;	417	size = res_queue.size;
631	if (WORDREAD_UNSAFE) UNLOCK (reslock);	418	X_UNLOCK (reslock);
632		419
633	if (size)	420	if (size)
634	return;	421	return;
635		422
636	maybe_start_thread ();	423	etp_maybe_start_thread ();
637		424
638	FD_ZERO(&rfd);	425	FD_ZERO (&rfd);
639	FD_SET(respipe [0], &rfd);	426	FD_SET (respipe [0], &rfd);
640		427
641	select (respipe [0] + 1, &rfd, 0, 0, 0);	428	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	429	}
643	}	430	}
644		431
645	static int poll_cb (int max)	432	static int poll_cb (void)
646	{	433	{
647	dSP;
648	int count = 0;
649	int do_croak = 0;
650	aio_req req;
651
652	for (;;)	434	for (;;)
653	{	435	{
654	while (max <= 0 || count < max)	436	int res = eio_poll ();
655	{
656	maybe_start_thread ();
657		437
658	LOCK (reslock);	438	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;	439	croak (0);
		440
		441	if (!max_outstanding || max_outstanding > eio_nreqs ())
		442	return res;
711		443
712	poll_wait ();	444	poll_wait ();
713
714	max = 0;
715	}	445	}
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	}	446	}
1139		447
1140	static void atfork_child (void)	448	static void atfork_child (void)
1141	{	449	{
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 ();	450	create_respipe ();
1170
1171	atfork_parent ();
1172	}	451	}
1173		452
1174	#define dREQ \	453	#define dREQ \
1175	aio_req req; \	454	aio_req req; \
1176	int req_pri = next_pri; \	455	int req_pri = next_pri; \
1177	next_pri = DEFAULT_PRI + PRI_BIAS; \	456	next_pri = EIO_PRI_DEFAULT; \
1178	\	457	\
1179	if (SvOK (callback) && !SvROK (callback)) \	458	if (SvOK (callback) && !SvROK (callback)) \
1180	croak ("callback must be undef or of reference type"); \	459	croak ("callback must be undef or of reference type"); \
1181	\	460	\
1182	Newz (0, req, 1, aio_cb); \	461	Newz (0, req, 1, eio_req); \
1183	if (!req) \	462	if (!req) \
1184	croak ("out of memory during aio_req allocation"); \	463	croak ("out of memory during eio_req allocation"); \
1185	\	464	\
1186	req->callback = newSVsv (callback); \	465	req->callback = newSVsv (callback); \
1187	req->pri = req_pri	466	req->pri = req_pri
1188		467
1189	#define REQ_SEND \	468	#define REQ_SEND \
1190	req_send (req); \	469	req_submit (req); \
1191	\	470	\
1192	if (GIMME_V != G_VOID) \	471	if (GIMME_V != G_VOID) \
1193	XPUSHs (req_sv (req, AIO_REQ_KLASS));	472	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1194		473
1195	MODULE = IO::AIO PACKAGE = IO::AIO	474	MODULE = IO::AIO PACKAGE = IO::AIO
1196		475
1197	PROTOTYPES: ENABLE	476	PROTOTYPES: ENABLE
1198		477
1199	BOOT:	478	BOOT:
1200	{	479	{
1201	HV *stash = gv_stashpv ("IO::AIO", 1);	480	stash = gv_stashpv ("IO::AIO", 1);
1202		481
1203	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	482	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1204	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	483	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1205	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	484	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1206	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	485	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1207	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	486	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		487	#ifndef _WIN32
1208	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	488	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		489	#endif
1209		490
1210	create_pipe ();	491	create_respipe ();
1211	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	492
		493	if (eio_init (want_poll, done_poll) < 0)
		494	croak ("IO::AIO: unable to initialise eio library");
		495
		496	/* atfork child called in fifo order, so before eio's handler */
		497	X_THREAD_ATFORK (0, 0, atfork_child);
1212	}	498	}
		499
		500	void
		501	max_poll_reqs (int nreqs)
		502	PROTOTYPE: $
		503	CODE:
		504	eio_set_max_poll_reqs (nreqs);
		505
		506	void
		507	max_poll_time (double nseconds)
		508	PROTOTYPE: $
		509	CODE:
		510	eio_set_max_poll_time (nseconds);
1213		511
1214	void	512	void
1215	min_parallel (int nthreads)	513	min_parallel (int nthreads)
1216	PROTOTYPE: $	514	PROTOTYPE: $
		515	CODE:
		516	eio_set_min_parallel (nthreads);
1217		517
1218	void	518	void
1219	max_parallel (int nthreads)	519	max_parallel (int nthreads)
1220	PROTOTYPE: $	520	PROTOTYPE: $
		521	CODE:
		522	eio_set_max_parallel (nthreads);
1221		523
1222	int	524	void
		525	max_idle (int nthreads)
		526	PROTOTYPE: $
		527	CODE:
		528	eio_set_max_idle (nthreads);
		529
		530	void
1223	max_outstanding (int maxreqs)	531	max_outstanding (int maxreqs)
1224	PROTOTYPE: $	532	PROTOTYPE: $
1225	CODE:	533	CODE:
1226	RETVAL = max_outstanding;
1227	max_outstanding = maxreqs;	534	max_outstanding = maxreqs;
1228	OUTPUT:
1229	RETVAL
1230		535
1231	void	536	void
1232	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	537	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: $$$;$	538	PROTOTYPE: $$$;$
1238	PPCODE:	539	PPCODE:
1239	{	540	{
1240	dREQ;	541	dREQ;
1241		542
1242	req->type = REQ_OPEN;	543	req->type = EIO_OPEN;
1243	req->data = newSVsv (pathname);	544	req->sv1 = newSVsv (pathname);
1244	req->dataptr = SvPVbyte_nolen (req->data);	545	req->ptr1 = SvPVbyte_nolen (req->sv1);
1245	req->fd = flags;	546	req->int1 = flags;
1246	req->mode = mode;	547	req->int2 = mode;
1247		548
1248	REQ_SEND;	549	REQ_SEND;
1249	}	550	}
1250		551
1251	void	552	void
1252	aio_close (fh,callback=&PL_sv_undef)	553	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1253	SV * fh
1254	SV * callback
1255	PROTOTYPE: $;$	554	PROTOTYPE: $;$
1256	ALIAS:	555	ALIAS:
1257	aio_close = REQ_CLOSE
1258	aio_fsync = REQ_FSYNC	556	aio_fsync = EIO_FSYNC
1259	aio_fdatasync = REQ_FDATASYNC	557	aio_fdatasync = EIO_FDATASYNC
1260	PPCODE:	558	PPCODE:
1261	{	559	{
1262	dREQ;	560	dREQ;
1263		561
1264	req->type = ix;	562	req->type = ix;
1265	req->fh = newSVsv (fh);	563	req->sv1 = newSVsv (fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1267		565
1268	REQ_SEND (req);	566	REQ_SEND (req);
1269	}	567	}
1270		568
1271	void	569	void
		570	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		571	PROTOTYPE: $;$
		572	PPCODE:
		573	{
		574	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		575	dREQ;
		576
		577	if (close_pipe < 0)
		578	{
		579	int pipefd [2];
		580
		581	if (pipe (pipefd) < 0
		582	|| close (pipefd [1]) < 0
		583	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		584	abort (); /*D*/
		585
		586	close_pipe = pipefd [0];
		587	}
		588
		589	req->type = EIO_DUP2;
		590	req->int1 = close_pipe;
		591	req->sv2 = newSVsv (fh);
		592	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		593
		594	REQ_SEND (req);
		595	}
		596
		597	void
1272	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	598	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:	599	ALIAS:
1280	aio_read = REQ_READ	600	aio_read = EIO_READ
1281	aio_write = REQ_WRITE	601	aio_write = EIO_WRITE
1282	PROTOTYPE: $$$$$;$	602	PROTOTYPE: $$$$$;$
1283	PPCODE:	603	PPCODE:
1284	{	604	{
1285	aio_req req;
1286	STRLEN svlen;	605	STRLEN svlen;
1287	char *svptr = SvPVbyte (data, svlen);	606	char *svptr = SvPVbyte (data, svlen);
		607	UV len = SvUV (length);
1288		608
1289	SvUPGRADE (data, SVt_PV);	609	SvUPGRADE (data, SVt_PV);
1290	SvPOK_on (data);	610	SvPOK_on (data);
1291		611
1292	if (dataoffset < 0)	612	if (dataoffset < 0)
1293	dataoffset += svlen;	613	dataoffset += svlen;
1294		614
1295	if (dataoffset < 0 || dataoffset > svlen)	615	if (dataoffset < 0 || dataoffset > svlen)
1296	croak ("data offset outside of string");	616	croak ("dataoffset outside of data scalar");
1297		617
1298	if (ix == REQ_WRITE)	618	if (ix == EIO_WRITE)
1299	{	619	{
1300	/* write: check length and adjust. */	620	/* write: check length and adjust. */
1301	if (length < 0 || length + dataoffset > svlen)	621	if (!SvOK (length) || len + dataoffset > svlen)
1302	length = svlen - dataoffset;	622	len = svlen - dataoffset;
1303	}	623	}
1304	else	624	else
1305	{	625	{
1306	/* read: grow scalar as necessary */	626	/* read: grow scalar as necessary */
1307	svptr = SvGROW (data, length + dataoffset);	627	svptr = SvGROW (data, len + dataoffset + 1);
1308	}	628	}
1309		629
1310	if (length < 0)	630	if (len < 0)
1311	croak ("length must not be negative");	631	croak ("length must not be negative");
1312		632
1313	{	633	{
1314	dREQ;	634	dREQ;
1315		635
1316	req->type = ix;	636	req->type = ix;
1317	req->fh = newSVsv (fh);	637	req->sv1 = newSVsv (fh);
1318	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	638	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1319	: IoOFP (sv_2io (fh)));	639	: IoOFP (sv_2io (fh)));
		640	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1320	req->offset = offset;	641	req->size = len;
1321	req->length = length;
1322	req->data = SvREFCNT_inc (data);	642	req->sv2 = SvREFCNT_inc (data);
1323	req->dataptr = (char *)svptr + dataoffset;	643	req->ptr2 = (char *)svptr + dataoffset;
		644	req->stroffset = dataoffset;
1324		645
1325	if (!SvREADONLY (data))	646	if (!SvREADONLY (data))
1326	{	647	{
1327	SvREADONLY_on (data);	648	SvREADONLY_on (data);
1328	req->data2ptr = (void *)data;	649	req->flags |= FLAG_SV2_RO_OFF;
1329	}	650	}
1330		651
1331	REQ_SEND;	652	REQ_SEND;
1332	}	653	}
1333	}	654	}
1334		655
1335	void	656	void
		657	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		658	PROTOTYPE: $$;$
		659	PPCODE:
		660	{
		661	SV *data;
		662	dREQ;
		663
		664	req->type = EIO_READLINK;
		665	req->sv1 = newSVsv (path);
		666	req->ptr1 = SvPVbyte_nolen (req->sv1);
		667
		668	REQ_SEND;
		669	}
		670
		671	void
1336	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	672	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: $$$$;$	673	PROTOTYPE: $$$$;$
1343	PPCODE:	674	PPCODE:
1344	{	675	{
1345	dREQ;	676	dREQ;
1346		677
1347	req->type = REQ_SENDFILE;	678	req->type = EIO_SENDFILE;
1348	req->fh = newSVsv (out_fh);	679	req->sv1 = newSVsv (out_fh);
1349	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	680	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1350	req->fh2 = newSVsv (in_fh);	681	req->sv2 = newSVsv (in_fh);
1351	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	682	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1352	req->offset = in_offset;	683	req->offs = SvVAL64 (in_offset);
1353	req->length = length;	684	req->size = length;
1354		685
1355	REQ_SEND;	686	REQ_SEND;
1356	}	687	}
1357		688
1358	void	689	void
1359	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	690	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1360	SV * fh
1361	UV offset
1362	IV length
1363	SV * callback
1364	PROTOTYPE: $$$;$	691	PROTOTYPE: $$$;$
1365	PPCODE:	692	PPCODE:
1366	{	693	{
1367	dREQ;	694	dREQ;
1368		695
1369	req->type = REQ_READAHEAD;	696	req->type = EIO_READAHEAD;
1370	req->fh = newSVsv (fh);	697	req->sv1 = newSVsv (fh);
1371	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	698	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1372	req->offset = offset;	699	req->offs = SvVAL64 (offset);
1373	req->length = length;	700	req->size = length;
1374		701
1375	REQ_SEND;	702	REQ_SEND;
1376	}	703	}
1377		704
1378	void	705	void
1379	aio_stat (fh_or_path,callback=&PL_sv_undef)	706	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1380	SV * fh_or_path
1381	SV * callback
1382	ALIAS:	707	ALIAS:
1383	aio_stat = REQ_STAT	708	aio_stat = EIO_STAT
1384	aio_lstat = REQ_LSTAT	709	aio_lstat = EIO_LSTAT
1385	PPCODE:	710	PPCODE:
1386	{	711	{
1387	dREQ;	712	dREQ;
1388		713
1389	New (0, req->statdata, 1, Stat_t);	714	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		715
1396	if (SvPOK (fh_or_path))	716	if (SvPOK (req->sv1))
1397	{	717	{
1398	req->type = ix;	718	req->type = ix;
1399	req->data = newSVsv (fh_or_path);
1400	req->dataptr = SvPVbyte_nolen (req->data);	719	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	}	720	}
1402	else	721	else
1403	{	722	{
1404	req->type = REQ_FSTAT;	723	req->type = EIO_FSTAT;
1405	req->fh = newSVsv (fh_or_path);
1406	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1407	}	725	}
1408		726
1409	REQ_SEND;	727	REQ_SEND;
1410	}	728	}
1411		729
1412	void	730	void
		731	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		732	PPCODE:
		733	{
		734	dREQ;
		735
		736	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		737	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		738	req->sv1 = newSVsv (fh_or_path);
		739
		740	if (SvPOK (req->sv1))
		741	{
		742	req->type = EIO_UTIME;
		743	req->ptr1 = SvPVbyte_nolen (req->sv1);
		744	}
		745	else
		746	{
		747	req->type = EIO_FUTIME;
		748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		749	}
		750
		751	REQ_SEND;
		752	}
		753
		754	void
		755	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		756	PPCODE:
		757	{
		758	dREQ;
		759
		760	req->sv1 = newSVsv (fh_or_path);
		761	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		762
		763	if (SvPOK (req->sv1))
		764	{
		765	req->type = EIO_TRUNCATE;
		766	req->ptr1 = SvPVbyte_nolen (req->sv1);
		767	}
		768	else
		769	{
		770	req->type = EIO_FTRUNCATE;
		771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		772	}
		773
		774	REQ_SEND;
		775	}
		776
		777	void
		778	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		779	ALIAS:
		780	aio_chmod = EIO_CHMOD
		781	aio_mkdir = EIO_MKDIR
		782	PPCODE:
		783	{
		784	dREQ;
		785
		786	req->int2 = mode;
		787	req->sv1 = newSVsv (fh_or_path);
		788
		789	if (SvPOK (req->sv1))
		790	{
		791	req->type = ix;
		792	req->ptr1 = SvPVbyte_nolen (req->sv1);
		793	}
		794	else
		795	{
		796	req->type = EIO_FCHMOD;
		797	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		798	}
		799
		800	REQ_SEND;
		801	}
		802
		803	void
		804	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		805	PPCODE:
		806	{
		807	dREQ;
		808
		809	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		810	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		811	req->sv1 = newSVsv (fh_or_path);
		812
		813	if (SvPOK (req->sv1))
		814	{
		815	req->type = EIO_CHOWN;
		816	req->ptr1 = SvPVbyte_nolen (req->sv1);
		817	}
		818	else
		819	{
		820	req->type = EIO_FCHOWN;
		821	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		822	}
		823
		824	REQ_SEND;
		825	}
		826
		827	void
1413	aio_unlink (pathname,callback=&PL_sv_undef)	828	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1414	SV * pathname
1415	SV * callback
1416	ALIAS:	829	ALIAS:
1417	aio_unlink = REQ_UNLINK	830	aio_unlink = EIO_UNLINK
1418	aio_rmdir = REQ_RMDIR	831	aio_rmdir = EIO_RMDIR
1419	aio_readdir = REQ_READDIR	832	aio_readdir = EIO_READDIR
1420	PPCODE:	833	PPCODE:
1421	{	834	{
1422	dREQ;	835	dREQ;
1423		836
1424	req->type = ix;	837	req->type = ix;
1425	req->data = newSVsv (pathname);	838	req->sv1 = newSVsv (pathname);
1426	req->dataptr = SvPVbyte_nolen (req->data);	839	req->ptr1 = SvPVbyte_nolen (req->sv1);
		840
		841	REQ_SEND;
		842	}
		843
		844	void
		845	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		846	ALIAS:
		847	aio_link = EIO_LINK
		848	aio_symlink = EIO_SYMLINK
		849	aio_rename = EIO_RENAME
		850	PPCODE:
		851	{
		852	dREQ;
		853
		854	req->type = ix;
		855	req->sv1 = newSVsv (oldpath);
		856	req->ptr1 = SvPVbyte_nolen (req->sv1);
		857	req->sv2 = newSVsv (newpath);
		858	req->ptr2 = SvPVbyte_nolen (req->sv2);
1427		859
1428	REQ_SEND;	860	REQ_SEND;
1429	}	861	}
1430		862
1431	void	863	void
1432	aio_link (oldpath,newpath,callback=&PL_sv_undef)	864	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:	865	PPCODE:
1441	{	866	{
1442	dREQ;	867	dREQ;
1443		868
1444	req->type = ix;	869	req->type = EIO_MKNOD;
1445	req->fh = newSVsv (oldpath);	870	req->sv1 = newSVsv (pathname);
1446	req->data2ptr = SvPVbyte_nolen (req->fh);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1447	req->data = newSVsv (newpath);	872	req->int2 = (mode_t)mode;
1448	req->dataptr = SvPVbyte_nolen (req->data);	873	req->offs = dev;
1449		874
1450	REQ_SEND;	875	REQ_SEND;
1451	}	876	}
1452		877
1453	void	878	void
1454	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	879	aio_busy (double delay, SV *callback=&PL_sv_undef)
1455	SV * pathname
1456	SV * callback
1457	UV mode
1458	UV dev
1459	PPCODE:	880	PPCODE:
1460	{	881	{
1461	dREQ;	882	dREQ;
1462		883
1463	req->type = REQ_MKNOD;	884	req->type = EIO_BUSY;
1464	req->data = newSVsv (pathname);	885	req->nv1 = delay < 0. ? 0. : delay;
1465	req->dataptr = SvPVbyte_nolen (req->data);	886
1466	req->mode = (mode_t)mode;
1467	req->offset = dev;
1468
1469	REQ_SEND;	887	REQ_SEND;
1470	}	888	}
1471		889
1472	void	890	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)	891	aio_group (SV *callback=&PL_sv_undef)
1489	SV * callback
1490	PROTOTYPE: ;$	892	PROTOTYPE: ;$
1491	PPCODE:	893	PPCODE:
1492	{	894	{
1493	dREQ;	895	dREQ;
1494		896
1495	req->type = REQ_GROUP;	897	req->type = EIO_GROUP;
		898
1496	req_send (req);	899	eio_submit (req);
1497
1498	XPUSHs (req_sv (req, AIO_GRP_KLASS));	900	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1499	}	901	}
1500		902
1501	void	903	void
1502	aio_nop (callback=&PL_sv_undef)	904	aio_nop (SV *callback=&PL_sv_undef)
1503	SV * callback	905	ALIAS:
		906	aio_nop = EIO_NOP
		907	aio_sync = EIO_SYNC
1504	PPCODE:	908	PPCODE:
1505	{	909	{
1506	dREQ;	910	dREQ;
1507		911
1508	req->type = REQ_NOP;	912	req->type = ix;
1509		913
1510	REQ_SEND;	914	REQ_SEND;
1511	}	915	}
1512		916
1513	int	917	int
1514	aioreq_pri (int pri = 0)	918	aioreq_pri (int pri = 0)
1515	PROTOTYPE: ;$	919	PROTOTYPE: ;$
1516	CODE:	920	CODE:
1517	RETVAL = next_pri - PRI_BIAS;	921	RETVAL = next_pri;
1518	if (items > 0)	922	if (items > 0)
1519	{	923	{
1520	if (pri < PRI_MIN) pri = PRI_MIN;	924	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1521	if (pri > PRI_MAX) pri = PRI_MAX;	925	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1522	next_pri = pri + PRI_BIAS;	926	next_pri = pri;
1523	}	927	}
1524	OUTPUT:	928	OUTPUT:
1525	RETVAL	929	RETVAL
1526		930
1527	void	931	void
1528	aioreq_nice (int nice = 0)	932	aioreq_nice (int nice = 0)
1529	CODE:	933	CODE:
1530	nice = next_pri - nice;	934	nice = next_pri - nice;
1531	if (nice < PRI_MIN) nice = PRI_MIN;	935	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1532	if (nice > PRI_MAX) nice = PRI_MAX;	936	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1533	next_pri = nice + PRI_BIAS;	937	next_pri = nice;
1534		938
1535	void	939	void
1536	flush ()	940	flush ()
1537	PROTOTYPE:	941	PROTOTYPE:
1538	CODE:	942	CODE:
1539	while (nreqs)	943	while (eio_nreqs ())
1540	{	944	{
1541	poll_wait ();	945	poll_wait ();
1542	poll_cb (0);	946	poll_cb ();
1543	}	947	}
1544		948
1545	void	949	int
1546	poll()	950	poll()
1547	PROTOTYPE:	951	PROTOTYPE:
1548	CODE:	952	CODE:
1549	if (nreqs)
1550	{
1551	poll_wait ();	953	poll_wait ();
1552	poll_cb (0);	954	RETVAL = poll_cb ();
1553	}	955	OUTPUT:
		956	RETVAL
1554		957
1555	int	958	int
1556	poll_fileno()	959	poll_fileno()
1557	PROTOTYPE:	960	PROTOTYPE:
1558	CODE:	961	CODE:
…		…
1562		965
1563	int	966	int
1564	poll_cb(...)	967	poll_cb(...)
1565	PROTOTYPE:	968	PROTOTYPE:
1566	CODE:	969	CODE:
1567	RETVAL = poll_cb (0);	970	RETVAL = poll_cb ();
1568	OUTPUT:	971	OUTPUT:
1569	RETVAL	972	RETVAL
1570		973
1571	int
1572	poll_some(int max = 0)
1573	PROTOTYPE: $
1574	CODE:
1575	RETVAL = poll_cb (max);
1576	OUTPUT:
1577	RETVAL
1578
1579	void	974	void
1580	poll_wait()	975	poll_wait()
1581	PROTOTYPE:	976	PROTOTYPE:
1582	CODE:	977	CODE:
1583	if (nreqs)
1584	poll_wait ();	978	poll_wait ();
1585		979
1586	int	980	int
1587	nreqs()	981	nreqs()
1588	PROTOTYPE:	982	PROTOTYPE:
1589	CODE:	983	CODE:
1590	RETVAL = nreqs;	984	RETVAL = eio_nreqs ();
1591	OUTPUT:	985	OUTPUT:
1592	RETVAL	986	RETVAL
1593		987
1594	int	988	int
1595	nready()	989	nready()
1596	PROTOTYPE:	990	PROTOTYPE:
1597	CODE:	991	CODE:
1598	RETVAL = get_nready ();	992	RETVAL = eio_nready ();
1599	OUTPUT:	993	OUTPUT:
1600	RETVAL	994	RETVAL
1601		995
1602	int	996	int
1603	npending()	997	npending()
1604	PROTOTYPE:	998	PROTOTYPE:
1605	CODE:	999	CODE:
1606	RETVAL = get_npending ();	1000	RETVAL = eio_npending ();
1607	OUTPUT:	1001	OUTPUT:
1608	RETVAL	1002	RETVAL
1609		1003
		1004	int
		1005	nthreads()
		1006	PROTOTYPE:
		1007	CODE:
		1008	RETVAL = eio_nthreads ();
		1009	OUTPUT:
		1010	RETVAL
		1011
		1012	void _on_next_submit (SV *cb)
		1013	CODE:
		1014	SvREFCNT_dec (on_next_submit);
		1015	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1016
1610	PROTOTYPES: DISABLE	1017	PROTOTYPES: DISABLE
1611		1018
1612	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1019	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1613		1020
1614	void	1021	void
1615	cancel (aio_req_ornot req)	1022	cancel (aio_req_ornot req)
1616	CODE:	1023	CODE:
1617	req_cancel (req);	1024	eio_cancel (req);
1618		1025
1619	void	1026	void
1620	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1027	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1621	CODE:	1028	CODE:
1622	SvREFCNT_dec (req->callback);	1029	SvREFCNT_dec (req->callback);
…		…
1627	void	1034	void
1628	add (aio_req grp, ...)	1035	add (aio_req grp, ...)
1629	PPCODE:	1036	PPCODE:
1630	{	1037	{
1631	int i;	1038	int i;
1632	aio_req req;
1633		1039
1634	if (grp->fd == 2)	1040	if (grp->int1 == 2)
1635	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1041	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1636		1042
1637	for (i = 1; i < items; ++i )	1043	for (i = 1; i < items; ++i )
1638	{	1044	{
		1045	aio_req req;
		1046
1639	if (GIMME_V != G_VOID)	1047	if (GIMME_V != G_VOID)
1640	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1048	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1641		1049
1642	req = SvAIO_REQ (ST (i));	1050	req = SvAIO_REQ (ST (i));
1643		1051
1644	if (req)	1052	if (req)
1645	{	1053	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	}	1054	}
1658	}	1055	}
1659		1056
1660	void	1057	void
1661	cancel_subs (aio_req_ornot req)	1058	cancel_subs (aio_req_ornot req)
…		…
1674	av = newAV ();	1071	av = newAV ();
1675		1072
1676	for (i = 1; i < items; ++i )	1073	for (i = 1; i < items; ++i )
1677	av_push (av, newSVsv (ST (i)));	1074	av_push (av, newSVsv (ST (i)));
1678		1075
1679	SvREFCNT_dec (grp->data);	1076	SvREFCNT_dec (grp->sv1);
1680	grp->data = (SV *)av;	1077	grp->sv1 = (SV *)av;
1681	}	1078	}
1682		1079
1683	void	1080	void
1684	errno (aio_req grp, int errorno = errno)	1081	errno (aio_req grp, int errorno = errno)
1685	CODE:	1082	CODE:
1686	grp->errorno = errorno;	1083	grp->errorno = errorno;
1687		1084
1688	void	1085	void
1689	limit (aio_req grp, int limit)	1086	limit (aio_req grp, int limit)
1690	CODE:	1087	CODE:
1691	grp->fd2 = limit;	1088	eio_grp_limit (grp, limit);
1692	aio_grp_feed (grp);
1693		1089
1694	void	1090	void
1695	feed (aio_req grp, SV *callback=&PL_sv_undef)	1091	feed (aio_req grp, SV *callback=&PL_sv_undef)
1696	CODE:	1092	CODE:
1697	{	1093	{
1698	SvREFCNT_dec (grp->fh2);	1094	SvREFCNT_dec (grp->sv2);
1699	grp->fh2 = newSVsv (callback);	1095	grp->sv2 = newSVsv (callback);
1700		1096
1701	if (grp->fd2 <= 0)	1097	if (grp->int2 <= 0)
1702	grp->fd2 = 2;	1098	grp->int2 = 2;
1703		1099
1704	aio_grp_feed (grp);	1100	eio_grp_limit (grp, grp->int2);
1705	}	1101	}
1706		1102

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