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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.79 by root, Thu Oct 26 16:28:33 2006 UTC vs.
Revision 1.136 by root, Sun Apr 19 13:15:55 2009 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	/* perl stupidly overrides readdir and maybe others */
49	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
50	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		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
51	#endif	83	#endif
52		84
53	#ifndef PTHREAD_STACK_MIN	85	/*****************************************************************************/
54	/* care for broken platforms, e.g. windows */	86
55	# define PTHREAD_STACK_MIN 16384	87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
56	#endif	91	#endif
57		92
58	#if __ia64	93	#define expect_false(expr) expect ((expr) != 0, 0)
59	# define STACKSIZE 65536	94	#define expect_true(expr) expect ((expr) != 0, 1)
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65		95
66	/* wether word reads are potentially non-atomic.	96	/*****************************************************************************/
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		97
78	/* buffer size for various temporary buffers */	98	static HV *stash;
79	#define AIO_BUFSIZE 65536	99	typedef SV SV8; /* byte-sv, used for argument-checking */
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		100
103	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
104	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
105		103
106	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
107	{
108	struct aio_cb *volatile next;
109
110	SV *data, *callback;	105	SV *callback; \
111	SV *fh, *fh2;	106	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;	107	STRLEN stroffset; \
119	int type;	108	SV *self;
120	int fd, fd2;
121	int errorno;
122	mode_t mode; /* open */
123		109
124	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
125	unsigned char pri;
126		111
127	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
128	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
129	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
130		118
131	enum {	119	enum {
132	FLAG_CANCELLED = 0x01,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
133	};	121	};
134		122
		123	#include "libeio/eio.c"
		124
135	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
136	typedef aio_cb *aio_req_ornot;	126	typedef eio_req *aio_req_ornot;
137		127
138	enum {	128	static SV *on_next_submit;
139	PRI_MIN = -4,	129	static int next_pri = EIO_PRI_DEFAULT;
140	PRI_MAX = 4,	130	static int max_outstanding;
141		131
142	DEFAULT_PRI = 0,	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
143	PRI_BIAS = -PRI_MIN,
144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
145	};
146		133
147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
148
149	static unsigned int started, wanted;
150	static volatile unsigned int nreqs, nready, npending;
151	static volatile unsigned int max_outstanding = 0xffffffff;
152	static int respipe [2];
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 pthread_mutex_t reslock = AIO_MUTEX_INIT;
204	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
205	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
206
207	/*
208	* a somewhat faster data structure might be nice, but
209	* with 8 priorities this actually needs <20 insns
210	* per shift, the most expensive operation.
211	*/
212	typedef struct {
213	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
214	int size;
215	} reqq;
216
217	static reqq req_queue;
218	static reqq res_queue;
219
220	int reqq_push (reqq *q, aio_req req)
221	{
222	int pri = req->pri;
223	req->next = 0;
224
225	if (q->qe[pri])
226	{
227	q->qe[pri]->next = req;
228	q->qe[pri] = req;
229	}
230	else
231	q->qe[pri] = q->qs[pri] = req;
232
233	return q->size++;
234	}
235
236	aio_req reqq_shift (reqq *q)
237	{
238	int pri;
239
240	if (!q->size)
241	return 0;
242
243	--q->size;
244
245	for (pri = NUM_PRI; pri--; )
246	{
247	aio_req req = q->qs[pri];
248
249	if (req)
250	{
251	if (!(q->qs[pri] = req->next))
252	q->qe[pri] = 0;
253
254	return req;
255	}
256	}
257
258	abort ();
259	}
260
261	static int poll_cb (int max);
262	static void req_invoke (aio_req req);
263	static void req_free (aio_req req);	134	static void req_destroy (aio_req req);
264	static void req_cancel (aio_req req);	135	static void req_cancel (aio_req req);
		136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
265		150
266	/* must be called at most once */	151	/* must be called at most once */
267	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
268	{	153	{
269	if (!req->self)	154	if (!req->self)
…		…
287	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
288	}	173	}
289		174
290	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
291	{	176	{
292	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	177	if (grp->sv2 && SvOK (grp->sv2))
293	{	178	{
294	int old_len = grp->length;
295
296	if (grp->fh2 && SvOK (grp->fh2))
297	{
298	dSP;	179	dSP;
299		180
300	ENTER;	181	ENTER;
301	SAVETMPS;	182	SAVETMPS;
302	PUSHMARK (SP);	183	PUSHMARK (SP);
303	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
304	PUTBACK;	185	PUTBACK;
305	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
306	SPAGAIN;	187	SPAGAIN;
307	FREETMPS;	188	FREETMPS;
308	LEAVE;	189	LEAVE;
309	}
310
311	/* stop if no progress has been made */
312	if (old_len == grp->length)
313	{
314	SvREFCNT_dec (grp->fh2);
315	grp->fh2 = 0;
316	break;
317	}
318	}	190	}
319	}	191	}
320		192
321	static void aio_grp_dec (aio_req grp)	193	static void req_submit (eio_req *req)
322	{	194	{
323	--grp->length;	195	eio_submit (req);
324		196
325	/* call feeder, if applicable */	197	if (expect_false (on_next_submit))
326	aio_grp_feed (grp);
327
328	/* finish, if done */
329	if (!grp->length && grp->fd)
330	{	198	{
331	req_invoke (grp);	199	dSP;
332	req_free (grp);	200	SV *cb = sv_2mortal (on_next_submit);
		201
		202	on_next_submit = 0;
		203
		204	PUSHMARK (SP);
		205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
333	}	207	}
334	}	208	}
335		209
336	static void poll_wait ()
337	{
338	fd_set rfd;
339
340	while (nreqs)
341	{
342	int size;
343	if (WORDREAD_UNSAFE) LOCK (reslock);
344	size = res_queue.size;
345	if (WORDREAD_UNSAFE) UNLOCK (reslock);
346
347	if (size)
348	return;
349
350	FD_ZERO(&rfd);
351	FD_SET(respipe [0], &rfd);
352
353	select (respipe [0] + 1, &rfd, 0, 0, 0);
354	}
355	}
356
357	static void req_invoke (aio_req req)	210	static int req_invoke (eio_req *req)
358	{	211	{
359	dSP;	212	dSP;
360		213
361	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	214	if (req->flags & FLAG_SV2_RO_OFF)
		215	SvREADONLY_off (req->sv2);
		216
		217	if (!EIO_CANCELLED (req) && req->callback)
362	{	218	{
363	ENTER;	219	ENTER;
364	SAVETMPS;	220	SAVETMPS;
365	PUSHMARK (SP);	221	PUSHMARK (SP);
366	EXTEND (SP, 1);	222	EXTEND (SP, 1);
367		223
368	switch (req->type)	224	switch (req->type)
369	{	225	{
370	case REQ_READDIR:	226	case EIO_READDIR:
371	{	227	{
372	SV *rv = &PL_sv_undef;	228	SV *rv = &PL_sv_undef;
373		229
374	if (req->result >= 0)	230	if (req->result >= 0)
375	{	231	{
376	int i;	232	int i;
377	char *buf = req->data2ptr;	233	char *buf = req->ptr2;
378	AV *av = newAV ();	234	AV *av = newAV ();
379		235
380	av_extend (av, req->result - 1);	236	av_extend (av, req->result - 1);
381		237
382	for (i = 0; i < req->result; ++i)	238	for (i = 0; i < req->result; ++i)
…		…
392		248
393	PUSHs (rv);	249	PUSHs (rv);
394	}	250	}
395	break;	251	break;
396		252
397	case REQ_OPEN:	253	case EIO_OPEN:
398	{	254	{
399	/* convert fd to fh */	255	/* convert fd to fh */
400	SV *fh;	256	SV *fh = &PL_sv_undef;
401		257
402	PUSHs (sv_2mortal (newSViv (req->result)));	258	if (req->result >= 0)
403	PUTBACK;	259	{
404	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	260	GV *gv = (GV *)sv_newmortal ();
405	SPAGAIN;	261	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		262	char sym [64];
		263	int symlen;
		264
		265	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		266	gv_init (gv, stash, sym, symlen, 0);
406		267
407	fh = SvREFCNT_inc (POPs);	268	symlen = snprintf (
		269	sym,
		270	sizeof (sym),
		271	"%s&=%d",
		272	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		273	req->result
		274	);
408		275
		276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		277	fh = (SV *)gv;
		278	}
		279
409	PUSHMARK (SP);	280	PUSHs (fh);
410	XPUSHs (sv_2mortal (fh));
411	}	281	}
412	break;	282	break;
413		283
414	case REQ_GROUP:	284	case EIO_GROUP:
415	req->fd = 2; /* mark group as finished */	285	req->int1 = 2; /* mark group as finished */
416		286
417	if (req->data)	287	if (req->sv1)
418	{	288	{
419	int i;	289	int i;
420	AV *av = (AV *)req->data;	290	AV *av = (AV *)req->sv1;
421		291
422	EXTEND (SP, AvFILL (av) + 1);	292	EXTEND (SP, AvFILL (av) + 1);
423	for (i = 0; i <= AvFILL (av); ++i)	293	for (i = 0; i <= AvFILL (av); ++i)
424	PUSHs (*av_fetch (av, i, 0));	294	PUSHs (*av_fetch (av, i, 0));
425	}	295	}
426	break;	296	break;
427		297
428	case REQ_NOP:	298	case EIO_NOP:
429	case REQ_BUSY:	299	case EIO_BUSY:
430	break;	300	break;
		301
		302	case EIO_READLINK:
		303	if (req->result > 0)
		304	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		305	break;
		306
		307	case EIO_STAT:
		308	case EIO_LSTAT:
		309	case EIO_FSTAT:
		310	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		311	PL_laststatval = req->result;
		312	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		313	PUSHs (sv_2mortal (newSViv (req->result)));
		314	break;
		315
		316	case EIO_READ:
		317	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		318	*SvEND (req->sv2) = 0;
		319	PUSHs (sv_2mortal (newSViv (req->result)));
		320	break;
		321
		322	case EIO_DUP2:
		323	if (req->result > 0)
		324	req->result = 0;
		325	/* FALLTHROUGH */
431		326
432	default:	327	default:
433	PUSHs (sv_2mortal (newSViv (req->result)));	328	PUSHs (sv_2mortal (newSViv (req->result)));
434	break;	329	break;
435	}	330	}
436		331
437	errno = req->errorno;	332	errno = req->errorno;
438		333
439	PUTBACK;	334	PUTBACK;
440	call_sv (req->callback, G_VOID | G_EVAL);	335	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
441	SPAGAIN;	336	SPAGAIN;
442		337
443	FREETMPS;	338	FREETMPS;
444	LEAVE;	339	LEAVE;
		340
		341	PUTBACK;
445	}	342	}
446		343
447	if (req->grp)	344	return !!SvTRUE (ERRSV);
448	{
449	aio_req grp = req->grp;
450
451	/* unlink request */
452	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
453	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
454
455	if (grp->grp_first == req)
456	grp->grp_first = req->grp_next;
457
458	aio_grp_dec (grp);
459	}
460
461	if (SvTRUE (ERRSV))
462	{
463	req_free (req);
464	croak (0);
465	}
466	}	345	}
467		346
468	static void req_free (aio_req req)	347	static void req_destroy (aio_req req)
469	{	348	{
470	if (req->self)	349	if (req->self)
471	{	350	{
472	sv_unmagic (req->self, PERL_MAGIC_ext);	351	sv_unmagic (req->self, PERL_MAGIC_ext);
473	SvREFCNT_dec (req->self);	352	SvREFCNT_dec (req->self);
474	}	353	}
475		354
476	SvREFCNT_dec (req->data);
477	SvREFCNT_dec (req->fh);	355	SvREFCNT_dec (req->sv1);
478	SvREFCNT_dec (req->fh2);	356	SvREFCNT_dec (req->sv2);
479	SvREFCNT_dec (req->callback);	357	SvREFCNT_dec (req->callback);
480	Safefree (req->statdata);
481
482	if (req->type == REQ_READDIR)
483	free (req->data2ptr);
484		358
485	Safefree (req);	359	Safefree (req);
486	}	360	}
487		361
488	static void req_cancel_subs (aio_req grp)	362	static void req_cancel_subs (aio_req grp)
489	{	363	{
490	aio_req sub;	364	aio_req sub;
491		365
492	if (grp->type != REQ_GROUP)	366	if (grp->type != EIO_GROUP)
493	return;	367	return;
494		368
495	SvREFCNT_dec (grp->fh2);	369	SvREFCNT_dec (grp->sv2);
496	grp->fh2 = 0;	370	grp->sv2 = 0;
497		371
498	for (sub = grp->grp_first; sub; sub = sub->grp_next)	372	eio_grp_cancel (grp);
499	req_cancel (sub);
500	}	373	}
501		374
502	static void req_cancel (aio_req req)	375	#ifdef USE_SOCKETS_AS_HANDLES
503	{	376	# define TO_SOCKET(x) (win32_get_osfhandle (x))
504	req->flags |= FLAG_CANCELLED;	377	#else
		378	# define TO_SOCKET(x) (x)
		379	#endif
505		380
506	req_cancel_subs (req);	381	static void
507	}	382	create_respipe (void)
		383	{
		384	int old_readfd = respipe [0];
508		385
		386	if (respipe [1] >= 0)
		387	respipe_close (TO_SOCKET (respipe [1]));
		388
		389	#ifdef _WIN32
		390	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		391	#else
		392	if (pipe (respipe))
		393	#endif
		394	croak ("unable to initialize result pipe");
		395
		396	if (old_readfd >= 0)
		397	{
		398	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		399	croak ("unable to initialize result pipe(2)");
		400
		401	respipe_close (respipe [0]);
		402	respipe [0] = old_readfd;
		403	}
		404
		405	#ifdef _WIN32
		406	int arg = 1;
		407	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		408	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		409	#else
		410	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		411	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		412	#endif
		413	croak ("unable to initialize result pipe(3)");
		414
		415	respipe_osf [0] = TO_SOCKET (respipe [0]);
		416	respipe_osf [1] = TO_SOCKET (respipe [1]);
		417	}
		418
		419	static void poll_wait (void)
		420	{
		421	fd_set rfd;
		422
		423	while (eio_nreqs ())
		424	{
		425	int size;
		426
		427	X_LOCK (reslock);
		428	size = res_queue.size;
		429	X_UNLOCK (reslock);
		430
		431	if (size)
		432	return;
		433
		434	etp_maybe_start_thread ();
		435
		436	FD_ZERO (&rfd);
		437	FD_SET (respipe [0], &rfd);
		438
		439	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		440	}
		441	}
		442
509	static int poll_cb (int max)	443	static int poll_cb (void)
510	{	444	{
511	dSP;
512	int count = 0;
513	int do_croak = 0;
514	aio_req req;
515
516	for (;;)	445	for (;;)
517	{	446	{
518	while (max <= 0 || count < max)	447	int res = eio_poll ();
519	{
520	LOCK (reslock);
521	req = reqq_shift (&res_queue);
522		448
523	if (req)	449	if (res > 0)
524	{
525	--npending;
526
527	if (!res_queue.size)
528	{
529	/* read any signals sent by the worker threads */
530	char buf [32];
531	while (read (respipe [0], buf, 32) == 32)
532	;
533	}
534	}
535
536	UNLOCK (reslock);
537
538	if (!req)
539	break;
540
541	--nreqs;
542
543	if (req->type == REQ_QUIT)
544	--started;
545	else if (req->type == REQ_GROUP && req->length)
546	{
547	req->fd = 1; /* mark request as delayed */
548	continue;
549	}
550	else
551	{
552	if (req->type == REQ_READ)
553	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
554
555	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
556	SvREADONLY_off (req->data);
557
558	if (req->statdata)
559	{
560	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
561	PL_laststatval = req->result;
562	PL_statcache = *(req->statdata);
563	}
564
565	req_invoke (req);
566
567	count++;
568	}
569
570	req_free (req);
571	}
572
573	if (nreqs <= max_outstanding)
574	break;	450	croak (0);
		451
		452	if (!max_outstanding || max_outstanding > eio_nreqs ())
		453	return res;
575		454
576	poll_wait ();	455	poll_wait ();
577
578	max = 0;
579	}	456	}
580
581	return count;
582	}	457	}
583		458
584	static void *aio_proc(void *arg);
585
586	static void start_thread (void)	459	static void atfork_child (void)
587	{	460	{
588	sigset_t fullsigset, oldsigset;	461	create_respipe ();
589	pthread_attr_t attr;
590
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	pthread_attr_init (&attr);
597	pthread_attr_setstacksize (&attr, STACKSIZE);
598	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
599
600	sigfillset (&fullsigset);
601
602	LOCK (wrklock);
603	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
604
605	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
606	{
607	wrk->prev = &wrk_first;
608	wrk->next = wrk_first.next;
609	wrk_first.next->prev = wrk;
610	wrk_first.next = wrk;
611	++started;
612	}
613	else
614	free (wrk);
615
616	sigprocmask (SIG_SETMASK, &oldsigset, 0);
617	UNLOCK (wrklock);
618	}	462	}
619		463
620	static void req_send (aio_req req)	464	static SV *
		465	get_cb (SV *cb_sv)
621	{	466	{
622	while (started < wanted && nreqs >= started)	467	HV *st;
623	start_thread ();	468	GV *gvp;
		469	CV *cv;
624		470
625	++nreqs;	471	if (!SvOK (cb_sv))
626
627	LOCK (reqlock);
628	++nready;
629	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);
631	UNLOCK (reqlock);
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	req_send (req);
644	}
645
646	static void min_parallel (int nthreads)
647	{
648	if (wanted < nthreads)
649	wanted = nthreads;
650	}
651
652	static void max_parallel (int nthreads)
653	{
654	int cur = started;
655
656	if (wanted > nthreads)
657	wanted = nthreads;
658
659	while (cur > wanted)
660	{
661	end_thread ();
662	cur--;
663	}
664
665	while (started > wanted)
666	{
667	poll_wait ();
668	poll_cb (0);
669	}
670	}
671
672	static void create_pipe ()
673	{
674	if (pipe (respipe))
675	croak ("unable to initialize result pipe");
676
677	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
678	croak ("cannot set result pipe to nonblocking mode");
679
680	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
681	croak ("cannot set result pipe to nonblocking mode");
682	}
683
684	/*****************************************************************************/
685	/* work around various missing functions */
686
687	#if !HAVE_PREADWRITE
688	# define pread aio_pread
689	# define pwrite aio_pwrite
690
691	/*
692	* make our pread/pwrite safe against themselves, but not against
693	* normal read/write by using a mutex. slows down execution a lot,
694	* but that's your problem, not mine.
695	*/
696	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
697
698	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
699	{
700	ssize_t res;
701	off_t ooffset;
702
703	LOCK (preadwritelock);
704	ooffset = lseek (fd, 0, SEEK_CUR);
705	lseek (fd, offset, SEEK_SET);
706	res = read (fd, buf, count);
707	lseek (fd, ooffset, SEEK_SET);
708	UNLOCK (preadwritelock);
709
710	return res;
711	}
712
713	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
714	{
715	ssize_t res;
716	off_t ooffset;
717
718	LOCK (preadwritelock);
719	ooffset = lseek (fd, 0, SEEK_CUR);
720	lseek (fd, offset, SEEK_SET);
721	res = write (fd, buf, count);
722	lseek (fd, offset, SEEK_SET);
723	UNLOCK (preadwritelock);
724
725	return res;
726	}
727	#endif
728
729	#if !HAVE_FDATASYNC
730	# define fdatasync fsync
731	#endif
732
733	#if !HAVE_READAHEAD
734	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
735
736	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
737	{
738	dBUF;
739
740	while (count > 0)
741	{
742	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
743
744	pread (fd, aio_buf, len, offset);
745	offset += len;
746	count -= len;
747	}
748
749	errno = 0;
750	}
751
752	#endif
753
754	#if !HAVE_READDIR_R
755	# define readdir_r aio_readdir_r
756
757	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
758
759	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
760	{
761	struct dirent *e;
762	int errorno;
763
764	LOCK (readdirlock);
765
766	e = readdir (dirp);
767	errorno = errno;
768
769	if (e)
770	{
771	*res = ent;
772	strcpy (ent->d_name, e->d_name);
773	}
774	else
775	*res = 0;
776
777	UNLOCK (readdirlock);
778
779	errno = errorno;
780	return e ? 0 : -1;
781	}
782	#endif
783
784	/* sendfile always needs emulation */
785	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
786	{
787	ssize_t res;
788
789	if (!count)
790	return 0;	472	return 0;
791		473
792	#if HAVE_SENDFILE	474	cv = sv_2cv (cb_sv, &st, &gvp, 0);
793	# if __linux
794	res = sendfile (ofd, ifd, &offset, count);
795		475
796	# elif __freebsd	476	if (!cv)
797	/*	477	croak ("IO::AIO callback must be undef or a CODE reference");
798	* Of course, the freebsd sendfile is a dire hack with no thoughts
799	* wasted on making it similar to other I/O functions.
800	*/
801	{
802	off_t sbytes;
803	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
804		478
805	if (res < 0 && sbytes)	479	return (SV *)cv;
806	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
807	res = sbytes;
808	}
809
810	# elif __hpux
811	res = sendfile (ofd, ifd, offset, count, 0, 0);
812
813	# elif __solaris
814	{
815	struct sendfilevec vec;
816	size_t sbytes;
817
818	vec.sfv_fd = ifd;
819	vec.sfv_flag = 0;
820	vec.sfv_off = offset;
821	vec.sfv_len = count;
822
823	res = sendfilev (ofd, &vec, 1, &sbytes);
824
825	if (res < 0 && sbytes)
826	res = sbytes;
827	}
828
829	# endif
830	#else
831	res = -1;
832	errno = ENOSYS;
833	#endif
834
835	if (res < 0
836	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
837	#if __solaris
838	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
839	#endif
840	)
841	)
842	{
843	/* emulate sendfile. this is a major pain in the ass */
844	dBUF;
845
846	res = 0;
847
848	while (count)
849	{
850	ssize_t cnt;
851
852	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
853
854	if (cnt <= 0)
855	{
856	if (cnt && !res) res = -1;
857	break;
858	}
859
860	cnt = write (ofd, aio_buf, cnt);
861
862	if (cnt <= 0)
863	{
864	if (cnt && !res) res = -1;
865	break;
866	}
867
868	offset += cnt;
869	res += cnt;
870	count -= cnt;
871	}
872	}
873
874	return res;
875	}
876
877	/* read a full directory */
878	static void scandir_ (aio_req req, worker *self)
879	{
880	DIR *dirp;
881	union
882	{
883	struct dirent d;
884	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
885	} *u;
886	struct dirent *entp;
887	char *name, *names;
888	int memlen = 4096;
889	int memofs = 0;
890	int res = 0;
891	int errorno;
892
893	LOCK (wrklock);
894	self->dirp = dirp = opendir (req->dataptr);
895	self->dbuf = u = malloc (sizeof (*u));
896	req->data2ptr = names = malloc (memlen);
897	UNLOCK (wrklock);
898
899	if (dirp && u && names)
900	for (;;)
901	{
902	errno = 0;
903	readdir_r (dirp, &u->d, &entp);
904
905	if (!entp)
906	break;
907
908	name = entp->d_name;
909
910	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
911	{
912	int len = strlen (name) + 1;
913
914	res++;
915
916	while (memofs + len > memlen)
917	{
918	memlen *= 2;
919	LOCK (wrklock);
920	req->data2ptr = names = realloc (names, memlen);
921	UNLOCK (wrklock);
922
923	if (!names)
924	break;
925	}
926
927	memcpy (names + memofs, name, len);
928	memofs += len;
929	}
930	}
931
932	if (errno)
933	res = -1;
934
935	req->result = res;
936	}
937
938	/*****************************************************************************/
939
940	static void *aio_proc (void *thr_arg)
941	{
942	aio_req req;
943	int type;
944	worker *self = (worker *)thr_arg;
945
946	do
947	{
948	LOCK (reqlock);
949
950	for (;;)
951	{
952	self->req = req = reqq_shift (&req_queue);
953
954	if (req)
955	break;
956
957	pthread_cond_wait (&reqwait, &reqlock);
958	}
959
960	--nready;
961
962	UNLOCK (reqlock);
963
964	errno = 0; /* strictly unnecessary */
965	type = req->type; /* remember type for QUIT check */
966
967	if (!(req->flags & FLAG_CANCELLED))
968	switch (type)
969	{
970	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
971	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
972
973	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
974	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
975
976	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
977	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
978	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
979
980	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
981	case REQ_CLOSE: req->result = close (req->fd); break;
982	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
983	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
984	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
985	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
986	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
987
988	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
989	case REQ_FSYNC: req->result = fsync (req->fd); break;
990	case REQ_READDIR: scandir_ (req, self); break;
991
992	case REQ_BUSY:
993	{
994	struct timeval tv;
995
996	tv.tv_sec = req->fd;
997	tv.tv_usec = req->fd2;
998
999	req->result = select (0, 0, 0, 0, &tv);
1000	}
1001
1002	case REQ_GROUP:
1003	case REQ_NOP:
1004	case REQ_QUIT:
1005	break;
1006
1007	default:
1008	req->result = ENOSYS;
1009	break;
1010	}
1011
1012	req->errorno = errno;
1013
1014	LOCK (reslock);
1015
1016	++npending;
1017
1018	if (!reqq_push (&res_queue, req))
1019	/* write a dummy byte to the pipe so fh becomes ready */
1020	write (respipe [1], &respipe, 1);
1021
1022	self->req = 0;
1023	worker_clear (self);
1024
1025	UNLOCK (reslock);
1026	}
1027	while (type != REQ_QUIT);
1028
1029	LOCK (wrklock);
1030	worker_free (self);
1031	UNLOCK (wrklock);
1032
1033	return 0;
1034	}
1035
1036	/*****************************************************************************/
1037
1038	static void atfork_prepare (void)
1039	{
1040	LOCK (wrklock);
1041	LOCK (reqlock);
1042	LOCK (reslock);
1043	#if !HAVE_PREADWRITE
1044	LOCK (preadwritelock);
1045	#endif
1046	#if !HAVE_READDIR_R
1047	LOCK (readdirlock);
1048	#endif
1049	}
1050
1051	static void atfork_parent (void)
1052	{
1053	#if !HAVE_READDIR_R
1054	UNLOCK (readdirlock);
1055	#endif
1056	#if !HAVE_PREADWRITE
1057	UNLOCK (preadwritelock);
1058	#endif
1059	UNLOCK (reslock);
1060	UNLOCK (reqlock);
1061	UNLOCK (wrklock);
1062	}
1063
1064	static void atfork_child (void)
1065	{
1066	aio_req prv;
1067
1068	while (prv = reqq_shift (&req_queue))
1069	req_free (prv);
1070
1071	while (prv = reqq_shift (&res_queue))
1072	req_free (prv);
1073
1074	while (wrk_first.next != &wrk_first)
1075	{
1076	worker *wrk = wrk_first.next;
1077
1078	if (wrk->req)
1079	req_free (wrk->req);
1080
1081	worker_clear (wrk);
1082	worker_free (wrk);
1083	}
1084
1085	started = 0;
1086	nreqs = 0;
1087
1088	close (respipe [0]);
1089	close (respipe [1]);
1090	create_pipe ();
1091
1092	atfork_parent ();
1093	}	480	}
1094		481
1095	#define dREQ \	482	#define dREQ \
		483	SV *cb_cv; \
1096	aio_req req; \	484	aio_req req; \
1097	int req_pri = next_pri; \	485	int req_pri = next_pri; \
1098	next_pri = DEFAULT_PRI + PRI_BIAS; \	486	next_pri = EIO_PRI_DEFAULT; \
1099	\	487	\
1100	if (SvOK (callback) && !SvROK (callback)) \	488	cb_cv = get_cb (callback); \
1101	croak ("callback must be undef or of reference type"); \
1102	\	489	\
1103	Newz (0, req, 1, aio_cb); \	490	Newz (0, req, 1, eio_req); \
1104	if (!req) \	491	if (!req) \
1105	croak ("out of memory during aio_req allocation"); \	492	croak ("out of memory during eio_req allocation"); \
1106	\	493	\
1107	req->callback = newSVsv (callback); \	494	req->callback = SvREFCNT_inc (cb_cv); \
1108	req->pri = req_pri	495	req->pri = req_pri
1109		496
1110	#define REQ_SEND \	497	#define REQ_SEND \
		498	PUTBACK; \
1111	req_send (req); \	499	req_submit (req); \
		500	SPAGAIN; \
1112	\	501	\
1113	if (GIMME_V != G_VOID) \	502	if (GIMME_V != G_VOID) \
1114	XPUSHs (req_sv (req, AIO_REQ_KLASS));	503	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1115		504
		505	static int
		506	extract_fd (SV *fh, int wr)
		507	{
		508	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		509
		510	if (fd < 0)
		511	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		512
		513	return fd;
		514	}
		515
1116	MODULE = IO::AIO PACKAGE = IO::AIO	516	MODULE = IO::AIO PACKAGE = IO::AIO
1117		517
1118	PROTOTYPES: ENABLE	518	PROTOTYPES: ENABLE
1119		519
1120	BOOT:	520	BOOT:
1121	{	521	{
1122	HV *stash = gv_stashpv ("IO::AIO", 1);	522	stash = gv_stashpv ("IO::AIO", 1);
		523
1123	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	524	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1124	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	525	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1125	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	526	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		527	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		528	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		529	#ifndef _WIN32
		530	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		531	#endif
		532	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		533	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
		534	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
		535	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
1126		536
1127	create_pipe ();	537	create_respipe ();
1128	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	538
		539	if (eio_init (want_poll, done_poll) < 0)
		540	croak ("IO::AIO: unable to initialise eio library");
		541
		542	/* atfork child called in fifo order, so before eio's handler */
		543	X_THREAD_ATFORK (0, 0, atfork_child);
1129	}	544	}
		545
		546	void
		547	max_poll_reqs (int nreqs)
		548	PROTOTYPE: $
		549	CODE:
		550	eio_set_max_poll_reqs (nreqs);
		551
		552	void
		553	max_poll_time (double nseconds)
		554	PROTOTYPE: $
		555	CODE:
		556	eio_set_max_poll_time (nseconds);
1130		557
1131	void	558	void
1132	min_parallel (int nthreads)	559	min_parallel (int nthreads)
1133	PROTOTYPE: $	560	PROTOTYPE: $
		561	CODE:
		562	eio_set_min_parallel (nthreads);
1134		563
1135	void	564	void
1136	max_parallel (int nthreads)	565	max_parallel (int nthreads)
1137	PROTOTYPE: $	566	PROTOTYPE: $
		567	CODE:
		568	eio_set_max_parallel (nthreads);
1138		569
1139	int	570	void
		571	max_idle (int nthreads)
		572	PROTOTYPE: $
		573	CODE:
		574	eio_set_max_idle (nthreads);
		575
		576	void
1140	max_outstanding (int maxreqs)	577	max_outstanding (int maxreqs)
1141	PROTOTYPE: $	578	PROTOTYPE: $
1142	CODE:	579	CODE:
1143	RETVAL = max_outstanding;
1144	max_outstanding = maxreqs;	580	max_outstanding = maxreqs;
1145	OUTPUT:
1146	RETVAL
1147		581
1148	void	582	void
1149	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	583	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1150	SV * pathname
1151	int flags
1152	int mode
1153	SV * callback
1154	PROTOTYPE: $$$;$	584	PROTOTYPE: $$$;$
1155	PPCODE:	585	PPCODE:
1156	{	586	{
1157	dREQ;	587	dREQ;
1158		588
1159	req->type = REQ_OPEN;	589	req->type = EIO_OPEN;
1160	req->data = newSVsv (pathname);	590	req->sv1 = newSVsv (pathname);
1161	req->dataptr = SvPVbyte_nolen (req->data);	591	req->ptr1 = SvPVbyte_nolen (req->sv1);
1162	req->fd = flags;	592	req->int1 = flags;
1163	req->mode = mode;	593	req->int2 = mode;
1164		594
1165	REQ_SEND;	595	REQ_SEND;
1166	}	596	}
1167		597
1168	void	598	void
1169	aio_close (fh,callback=&PL_sv_undef)	599	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1170	SV * fh
1171	SV * callback
1172	PROTOTYPE: $;$	600	PROTOTYPE: $;$
1173	ALIAS:	601	ALIAS:
1174	aio_close = REQ_CLOSE
1175	aio_fsync = REQ_FSYNC	602	aio_fsync = EIO_FSYNC
1176	aio_fdatasync = REQ_FDATASYNC	603	aio_fdatasync = EIO_FDATASYNC
1177	PPCODE:	604	PPCODE:
1178	{	605	{
		606	int fd = extract_fd (fh, 0);
1179	dREQ;	607	dREQ;
1180		608
1181	req->type = ix;	609	req->type = ix;
1182	req->fh = newSVsv (fh);	610	req->sv1 = newSVsv (fh);
1183	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	611	req->int1 = fd;
1184		612
1185	REQ_SEND (req);	613	REQ_SEND (req);
1186	}	614	}
1187		615
1188	void	616	void
		617	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		618	PROTOTYPE: $$$$;$
		619	PPCODE:
		620	{
		621	int fd = extract_fd (fh, 0);
		622	dREQ;
		623
		624	req->type = EIO_SYNC_FILE_RANGE;
		625	req->sv1 = newSVsv (fh);
		626	req->int1 = fd;
		627	req->offs = SvVAL64 (offset);
		628	req->size = SvVAL64 (nbytes);
		629	req->int2 = flags;
		630
		631	REQ_SEND (req);
		632	}
		633
		634	void
		635	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		636	PROTOTYPE: $;$
		637	PPCODE:
		638	{
		639	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		640	int fd = extract_fd (fh, 0);
		641	dREQ;
		642
		643	if (close_pipe < 0)
		644	{
		645	int pipefd [2];
		646
		647	if (pipe (pipefd) < 0
		648	|| close (pipefd [1]) < 0
		649	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		650	abort (); /*D*/
		651
		652	close_pipe = pipefd [0];
		653	}
		654
		655	req->type = EIO_DUP2;
		656	req->int1 = close_pipe;
		657	req->sv2 = newSVsv (fh);
		658	req->int2 = fd;
		659
		660	REQ_SEND (req);
		661	}
		662
		663	void
1189	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	664	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1190	SV * fh
1191	UV offset
1192	UV length
1193	SV * data
1194	UV dataoffset
1195	SV * callback
1196	ALIAS:	665	ALIAS:
1197	aio_read = REQ_READ	666	aio_read = EIO_READ
1198	aio_write = REQ_WRITE	667	aio_write = EIO_WRITE
1199	PROTOTYPE: $$$$$;$	668	PROTOTYPE: $$$$$;$
1200	PPCODE:	669	PPCODE:
1201	{	670	{
1202	aio_req req;
1203	STRLEN svlen;	671	STRLEN svlen;
1204	char *svptr = SvPVbyte (data, svlen);	672	char *svptr = SvPVbyte (data, svlen);
		673	UV len = SvUV (length);
		674	int fd;
		675
		676	if (SvTYPE (data) > SVt_PVMG)
		677	croak ("illegal data argument '%s', must be plain scalar string", SvPV_nolen (data));
1205		678
1206	SvUPGRADE (data, SVt_PV);	679	SvUPGRADE (data, SVt_PV);
1207	SvPOK_on (data);	680	SvPOK_only (data);
1208		681
1209	if (dataoffset < 0)	682	if (dataoffset < 0)
1210	dataoffset += svlen;	683	dataoffset += svlen;
1211		684
1212	if (dataoffset < 0 || dataoffset > svlen)	685	if (dataoffset < 0 || dataoffset > svlen)
1213	croak ("data offset outside of string");	686	croak ("dataoffset outside of data scalar");
1214		687
1215	if (ix == REQ_WRITE)	688	if (ix == EIO_WRITE)
1216	{	689	{
1217	/* write: check length and adjust. */	690	/* write: check length and adjust. */
1218	if (length < 0 || length + dataoffset > svlen)	691	if (!SvOK (length) || len + dataoffset > svlen)
1219	length = svlen - dataoffset;	692	len = svlen - dataoffset;
1220	}	693	}
1221	else	694	else
1222	{	695	{
1223	/* read: grow scalar as necessary */	696	/* read: grow scalar as necessary */
1224	svptr = SvGROW (data, length + dataoffset);	697	svptr = SvGROW (data, len + dataoffset + 1);
1225	}	698	}
1226		699
1227	if (length < 0)	700	if (len < 0)
1228	croak ("length must not be negative");	701	croak ("length must not be negative");
		702
		703	fd = extract_fd (fh, ix == EIO_WRITE);
1229		704
1230	{	705	{
1231	dREQ;	706	dREQ;
1232		707
1233	req->type = ix;	708	req->type = ix;
1234	req->fh = newSVsv (fh);	709	req->sv1 = newSVsv (fh);
1235	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	710	req->int1 = fd;
1236	: IoOFP (sv_2io (fh)));	711	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1237	req->offset = offset;	712	req->size = len;
1238	req->length = length;
1239	req->data = SvREFCNT_inc (data);	713	req->sv2 = SvREFCNT_inc (data);
1240	req->dataptr = (char *)svptr + dataoffset;	714	req->ptr2 = (char *)svptr + dataoffset;
		715	req->stroffset = dataoffset;
1241		716
1242	if (!SvREADONLY (data))	717	if (!SvREADONLY (data))
1243	{	718	{
1244	SvREADONLY_on (data);	719	SvREADONLY_on (data);
1245	req->data2ptr = (void *)data;	720	req->flags |= FLAG_SV2_RO_OFF;
1246	}	721	}
1247		722
1248	REQ_SEND;	723	REQ_SEND;
1249	}	724	}
1250	}	725	}
1251		726
1252	void	727	void
		728	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		729	PROTOTYPE: $$;$
		730	PPCODE:
		731	{
		732	SV *data;
		733	dREQ;
		734
		735	req->type = EIO_READLINK;
		736	req->sv1 = newSVsv (path);
		737	req->ptr1 = SvPVbyte_nolen (req->sv1);
		738
		739	REQ_SEND;
		740	}
		741
		742	void
1253	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	743	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1254	SV * out_fh
1255	SV * in_fh
1256	UV in_offset
1257	UV length
1258	SV * callback
1259	PROTOTYPE: $$$$;$	744	PROTOTYPE: $$$$;$
1260	PPCODE:	745	PPCODE:
1261	{	746	{
		747	int ifd = extract_fd (in_fh , 0);
		748	int ofd = extract_fd (out_fh, 0);
1262	dREQ;	749	dREQ;
1263		750
1264	req->type = REQ_SENDFILE;	751	req->type = EIO_SENDFILE;
1265	req->fh = newSVsv (out_fh);	752	req->sv1 = newSVsv (out_fh);
1266	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	753	req->int1 = ofd;
1267	req->fh2 = newSVsv (in_fh);	754	req->sv2 = newSVsv (in_fh);
1268	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	755	req->int2 = ifd;
1269	req->offset = in_offset;	756	req->offs = SvVAL64 (in_offset);
1270	req->length = length;	757	req->size = length;
1271		758
1272	REQ_SEND;	759	REQ_SEND;
1273	}	760	}
1274		761
1275	void	762	void
1276	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	763	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1277	SV * fh
1278	UV offset
1279	IV length
1280	SV * callback
1281	PROTOTYPE: $$$;$	764	PROTOTYPE: $$$;$
1282	PPCODE:	765	PPCODE:
1283	{	766	{
		767	int fd = extract_fd (fh, 0);
1284	dREQ;	768	dREQ;
1285		769
1286	req->type = REQ_READAHEAD;	770	req->type = EIO_READAHEAD;
1287	req->fh = newSVsv (fh);	771	req->sv1 = newSVsv (fh);
1288	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	772	req->int1 = fd;
1289	req->offset = offset;	773	req->offs = SvVAL64 (offset);
1290	req->length = length;	774	req->size = length;
1291		775
1292	REQ_SEND;	776	REQ_SEND;
1293	}	777	}
1294		778
1295	void	779	void
1296	aio_stat (fh_or_path,callback=&PL_sv_undef)	780	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1297	SV * fh_or_path
1298	SV * callback
1299	ALIAS:	781	ALIAS:
1300	aio_stat = REQ_STAT	782	aio_stat = EIO_STAT
1301	aio_lstat = REQ_LSTAT	783	aio_lstat = EIO_LSTAT
1302	PPCODE:	784	PPCODE:
1303	{	785	{
1304	dREQ;	786	dREQ;
1305		787
1306	New (0, req->statdata, 1, Stat_t);	788	req->sv1 = newSVsv (fh_or_path);
1307	if (!req->statdata)
1308	{
1309	req_free (req);
1310	croak ("out of memory during aio_req->statdata allocation");
1311	}
1312		789
1313	if (SvPOK (fh_or_path))	790	if (SvPOK (req->sv1))
1314	{	791	{
1315	req->type = ix;	792	req->type = ix;
1316	req->data = newSVsv (fh_or_path);
1317	req->dataptr = SvPVbyte_nolen (req->data);	793	req->ptr1 = SvPVbyte_nolen (req->sv1);
1318	}	794	}
1319	else	795	else
1320	{	796	{
1321	req->type = REQ_FSTAT;	797	req->type = EIO_FSTAT;
1322	req->fh = newSVsv (fh_or_path);
1323	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	798	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1324	}	799	}
1325		800
1326	REQ_SEND;	801	REQ_SEND;
1327	}	802	}
1328		803
1329	void	804	void
		805	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		806	PPCODE:
		807	{
		808	dREQ;
		809
		810	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		811	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		812	req->sv1 = newSVsv (fh_or_path);
		813
		814	if (SvPOK (req->sv1))
		815	{
		816	req->type = EIO_UTIME;
		817	req->ptr1 = SvPVbyte_nolen (req->sv1);
		818	}
		819	else
		820	{
		821	req->type = EIO_FUTIME;
		822	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		823	}
		824
		825	REQ_SEND;
		826	}
		827
		828	void
		829	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		830	PPCODE:
		831	{
		832	dREQ;
		833
		834	req->sv1 = newSVsv (fh_or_path);
		835	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		836
		837	if (SvPOK (req->sv1))
		838	{
		839	req->type = EIO_TRUNCATE;
		840	req->ptr1 = SvPVbyte_nolen (req->sv1);
		841	}
		842	else
		843	{
		844	req->type = EIO_FTRUNCATE;
		845	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		846	}
		847
		848	REQ_SEND;
		849	}
		850
		851	void
		852	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		853	ALIAS:
		854	aio_chmod = EIO_CHMOD
		855	aio_mkdir = EIO_MKDIR
		856	PPCODE:
		857	{
		858	dREQ;
		859
		860	req->int2 = mode;
		861	req->sv1 = newSVsv (fh_or_path);
		862
		863	if (SvPOK (req->sv1))
		864	{
		865	req->type = ix;
		866	req->ptr1 = SvPVbyte_nolen (req->sv1);
		867	}
		868	else
		869	{
		870	req->type = EIO_FCHMOD;
		871	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		872	}
		873
		874	REQ_SEND;
		875	}
		876
		877	void
		878	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		879	PPCODE:
		880	{
		881	dREQ;
		882
		883	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		884	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		885	req->sv1 = newSVsv (fh_or_path);
		886
		887	if (SvPOK (req->sv1))
		888	{
		889	req->type = EIO_CHOWN;
		890	req->ptr1 = SvPVbyte_nolen (req->sv1);
		891	}
		892	else
		893	{
		894	req->type = EIO_FCHOWN;
		895	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		896	}
		897
		898	REQ_SEND;
		899	}
		900
		901	void
1330	aio_unlink (pathname,callback=&PL_sv_undef)	902	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1331	SV * pathname
1332	SV * callback
1333	ALIAS:	903	ALIAS:
1334	aio_unlink = REQ_UNLINK	904	aio_unlink = EIO_UNLINK
1335	aio_rmdir = REQ_RMDIR	905	aio_rmdir = EIO_RMDIR
1336	aio_readdir = REQ_READDIR	906	aio_readdir = EIO_READDIR
1337	PPCODE:	907	PPCODE:
1338	{	908	{
1339	dREQ;	909	dREQ;
1340		910
1341	req->type = ix;	911	req->type = ix;
1342	req->data = newSVsv (pathname);	912	req->sv1 = newSVsv (pathname);
1343	req->dataptr = SvPVbyte_nolen (req->data);	913	req->ptr1 = SvPVbyte_nolen (req->sv1);
		914
		915	REQ_SEND;
		916	}
		917
		918	void
		919	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		920	ALIAS:
		921	aio_link = EIO_LINK
		922	aio_symlink = EIO_SYMLINK
		923	aio_rename = EIO_RENAME
		924	PPCODE:
		925	{
		926	dREQ;
		927
		928	req->type = ix;
		929	req->sv1 = newSVsv (oldpath);
		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
		931	req->sv2 = newSVsv (newpath);
		932	req->ptr2 = SvPVbyte_nolen (req->sv2);
1344		933
1345	REQ_SEND;	934	REQ_SEND;
1346	}	935	}
1347		936
1348	void	937	void
1349	aio_link (oldpath,newpath,callback=&PL_sv_undef)	938	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1350	SV * oldpath
1351	SV * newpath
1352	SV * callback
1353	ALIAS:
1354	aio_link = REQ_LINK
1355	aio_symlink = REQ_SYMLINK
1356	aio_rename = REQ_RENAME
1357	PPCODE:	939	PPCODE:
1358	{	940	{
1359	dREQ;	941	dREQ;
1360		942
1361	req->type = ix;	943	req->type = EIO_MKNOD;
1362	req->fh = newSVsv (oldpath);	944	req->sv1 = newSVsv (pathname);
1363	req->data2ptr = SvPVbyte_nolen (req->fh);	945	req->ptr1 = SvPVbyte_nolen (req->sv1);
1364	req->data = newSVsv (newpath);	946	req->int2 = (mode_t)mode;
1365	req->dataptr = SvPVbyte_nolen (req->data);	947	req->offs = dev;
1366		948
1367	REQ_SEND;	949	REQ_SEND;
1368	}	950	}
1369		951
1370	void	952	void
1371	aio_busy (delay,callback=&PL_sv_undef)	953	aio_busy (double delay, SV *callback=&PL_sv_undef)
1372	double delay
1373	SV * callback
1374	PPCODE:	954	PPCODE:
1375	{	955	{
1376	dREQ;	956	dREQ;
1377		957
1378	req->type = REQ_BUSY;	958	req->type = EIO_BUSY;
1379	req->fd = delay < 0. ? 0 : delay;	959	req->nv1 = delay < 0. ? 0. : delay;
1380	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1381		960
1382	REQ_SEND;	961	REQ_SEND;
1383	}	962	}
1384		963
1385	void	964	void
1386	aio_group (callback=&PL_sv_undef)	965	aio_group (SV *callback=&PL_sv_undef)
1387	SV * callback
1388	PROTOTYPE: ;$	966	PROTOTYPE: ;$
1389	PPCODE:	967	PPCODE:
1390	{	968	{
1391	dREQ;	969	dREQ;
1392		970
1393	req->type = REQ_GROUP;	971	req->type = EIO_GROUP;
		972
1394	req_send (req);	973	req_submit (req);
1395
1396	XPUSHs (req_sv (req, AIO_GRP_KLASS));	974	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1397	}	975	}
1398		976
1399	void	977	void
1400	aio_nop (callback=&PL_sv_undef)	978	aio_nop (SV *callback=&PL_sv_undef)
1401	SV * callback	979	ALIAS:
		980	aio_nop = EIO_NOP
		981	aio_sync = EIO_SYNC
1402	PPCODE:	982	PPCODE:
1403	{	983	{
1404	dREQ;	984	dREQ;
1405		985
1406	req->type = REQ_NOP;	986	req->type = ix;
1407		987
1408	REQ_SEND;	988	REQ_SEND;
1409	}	989	}
1410		990
1411	int	991	int
1412	aioreq_pri (int pri = 0)	992	aioreq_pri (int pri = 0)
1413	PROTOTYPE: ;$	993	PROTOTYPE: ;$
1414	CODE:	994	CODE:
1415	RETVAL = next_pri - PRI_BIAS;	995	RETVAL = next_pri;
1416	if (items > 0)	996	if (items > 0)
1417	{	997	{
1418	if (pri < PRI_MIN) pri = PRI_MIN;	998	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1419	if (pri > PRI_MAX) pri = PRI_MAX;	999	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1420	next_pri = pri + PRI_BIAS;	1000	next_pri = pri;
1421	}	1001	}
1422	OUTPUT:	1002	OUTPUT:
1423	RETVAL	1003	RETVAL
1424		1004
1425	void	1005	void
1426	aioreq_nice (int nice = 0)	1006	aioreq_nice (int nice = 0)
1427	CODE:	1007	CODE:
1428	nice = next_pri - nice;	1008	nice = next_pri - nice;
1429	if (nice < PRI_MIN) nice = PRI_MIN;	1009	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1430	if (nice > PRI_MAX) nice = PRI_MAX;	1010	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1431	next_pri = nice + PRI_BIAS;	1011	next_pri = nice;
1432		1012
1433	void	1013	void
1434	flush ()	1014	flush ()
1435	PROTOTYPE:	1015	PROTOTYPE:
1436	CODE:	1016	CODE:
1437	while (nreqs)	1017	while (eio_nreqs ())
1438	{	1018	{
1439	poll_wait ();	1019	poll_wait ();
1440	poll_cb (0);	1020	poll_cb ();
1441	}	1021	}
1442		1022
1443	void	1023	int
1444	poll()	1024	poll()
1445	PROTOTYPE:	1025	PROTOTYPE:
1446	CODE:	1026	CODE:
1447	if (nreqs)
1448	{
1449	poll_wait ();	1027	poll_wait ();
1450	poll_cb (0);	1028	RETVAL = poll_cb ();
1451	}	1029	OUTPUT:
		1030	RETVAL
1452		1031
1453	int	1032	int
1454	poll_fileno()	1033	poll_fileno()
1455	PROTOTYPE:	1034	PROTOTYPE:
1456	CODE:	1035	CODE:
…		…
1460		1039
1461	int	1040	int
1462	poll_cb(...)	1041	poll_cb(...)
1463	PROTOTYPE:	1042	PROTOTYPE:
1464	CODE:	1043	CODE:
1465	RETVAL = poll_cb (0);	1044	RETVAL = poll_cb ();
1466	OUTPUT:	1045	OUTPUT:
1467	RETVAL	1046	RETVAL
1468		1047
1469	int
1470	poll_some(int max = 0)
1471	PROTOTYPE: $
1472	CODE:
1473	RETVAL = poll_cb (max);
1474	OUTPUT:
1475	RETVAL
1476
1477	void	1048	void
1478	poll_wait()	1049	poll_wait()
1479	PROTOTYPE:	1050	PROTOTYPE:
1480	CODE:	1051	CODE:
1481	if (nreqs)
1482	poll_wait ();	1052	poll_wait ();
1483		1053
1484	int	1054	int
1485	nreqs()	1055	nreqs()
1486	PROTOTYPE:	1056	PROTOTYPE:
1487	CODE:	1057	CODE:
1488	RETVAL = nreqs;	1058	RETVAL = eio_nreqs ();
1489	OUTPUT:	1059	OUTPUT:
1490	RETVAL	1060	RETVAL
1491		1061
1492	int	1062	int
1493	nready()	1063	nready()
1494	PROTOTYPE:	1064	PROTOTYPE:
1495	CODE:	1065	CODE:
1496	if (WORDREAD_UNSAFE) LOCK (reqlock);
1497	RETVAL = nready;	1066	RETVAL = eio_nready ();
1498	if (WORDREAD_UNSAFE) UNLOCK (reqlock);
1499	OUTPUT:	1067	OUTPUT:
1500	RETVAL	1068	RETVAL
1501		1069
1502	int	1070	int
1503	npending()	1071	npending()
1504	PROTOTYPE:	1072	PROTOTYPE:
1505	CODE:	1073	CODE:
1506	if (WORDREAD_UNSAFE) LOCK (reslock);
1507	RETVAL = npending;	1074	RETVAL = eio_npending ();
1508	if (WORDREAD_UNSAFE) UNLOCK (reslock);
1509	OUTPUT:	1075	OUTPUT:
1510	RETVAL	1076	RETVAL
1511		1077
		1078	int
		1079	nthreads()
		1080	PROTOTYPE:
		1081	CODE:
		1082	RETVAL = eio_nthreads ();
		1083	OUTPUT:
		1084	RETVAL
		1085
		1086	void _on_next_submit (SV *cb)
		1087	CODE:
		1088	SvREFCNT_dec (on_next_submit);
		1089	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1090
1512	PROTOTYPES: DISABLE	1091	PROTOTYPES: DISABLE
1513		1092
1514	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1093	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1515		1094
1516	void	1095	void
1517	cancel (aio_req_ornot req)	1096	cancel (aio_req_ornot req)
1518	CODE:	1097	CODE:
1519	req_cancel (req);	1098	eio_cancel (req);
1520		1099
1521	void	1100	void
1522	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1101	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1523	CODE:	1102	PPCODE:
		1103	{
		1104	if (GIMME_V != G_VOID)
		1105	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1106
		1107	if (items > 1)
		1108	{
		1109	SV *cb_cv = get_cb (callback);
		1110
1524	SvREFCNT_dec (req->callback);	1111	SvREFCNT_dec (req->callback);
1525	req->callback = newSVsv (callback);	1112	req->callback = SvREFCNT_inc (cb_cv);
		1113	}
		1114	}
1526		1115
1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1116	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1528		1117
1529	void	1118	void
1530	add (aio_req grp, ...)	1119	add (aio_req grp, ...)
1531	PPCODE:	1120	PPCODE:
1532	{	1121	{
1533	int i;	1122	int i;
1534	aio_req req;
1535		1123
1536	if (grp->fd == 2)	1124	if (grp->int1 == 2)
1537	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1125	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1538		1126
1539	for (i = 1; i < items; ++i )	1127	for (i = 1; i < items; ++i )
1540	{	1128	{
		1129	aio_req req;
		1130
1541	if (GIMME_V != G_VOID)	1131	if (GIMME_V != G_VOID)
1542	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1132	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1543		1133
1544	req = SvAIO_REQ (ST (i));	1134	req = SvAIO_REQ (ST (i));
1545		1135
1546	if (req)	1136	if (req)
1547	{	1137	eio_grp_add (grp, req);
1548	++grp->length;
1549	req->grp = grp;
1550
1551	req->grp_prev = 0;
1552	req->grp_next = grp->grp_first;
1553
1554	if (grp->grp_first)
1555	grp->grp_first->grp_prev = req;
1556
1557	grp->grp_first = req;
1558	}
1559	}	1138	}
1560	}	1139	}
1561		1140
1562	void	1141	void
1563	cancel_subs (aio_req_ornot req)	1142	cancel_subs (aio_req_ornot req)
…		…
1576	av = newAV ();	1155	av = newAV ();
1577		1156
1578	for (i = 1; i < items; ++i )	1157	for (i = 1; i < items; ++i )
1579	av_push (av, newSVsv (ST (i)));	1158	av_push (av, newSVsv (ST (i)));
1580		1159
1581	SvREFCNT_dec (grp->data);	1160	SvREFCNT_dec (grp->sv1);
1582	grp->data = (SV *)av;	1161	grp->sv1 = (SV *)av;
1583	}	1162	}
1584		1163
1585	void	1164	void
1586	errno (aio_req grp, int errorno = errno)	1165	errno (aio_req grp, int errorno = errno)
1587	CODE:	1166	CODE:
1588	grp->errorno = errorno;	1167	grp->errorno = errorno;
1589		1168
1590	void	1169	void
1591	limit (aio_req grp, int limit)	1170	limit (aio_req grp, int limit)
1592	CODE:	1171	CODE:
1593	grp->fd2 = limit;	1172	eio_grp_limit (grp, limit);
1594	aio_grp_feed (grp);
1595		1173
1596	void	1174	void
1597	feed (aio_req grp, SV *callback=&PL_sv_undef)	1175	feed (aio_req grp, SV *callback=&PL_sv_undef)
1598	CODE:	1176	CODE:
1599	{	1177	{
1600	SvREFCNT_dec (grp->fh2);	1178	SvREFCNT_dec (grp->sv2);
1601	grp->fh2 = newSVsv (callback);	1179	grp->sv2 = newSVsv (callback);
		1180	grp->feed = aio_grp_feed;
1602		1181
1603	if (grp->fd2 <= 0)	1182	if (grp->int2 <= 0)
1604	grp->fd2 = 2;	1183	grp->int2 = 2;
1605		1184
1606	aio_grp_feed (grp);	1185	eio_grp_limit (grp, grp->int2);
1607	}	1186	}
1608		1187

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