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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.81 by root, Fri Oct 27 20:10:06 2006 UTC vs.
Revision 1.139 by root, Tue Apr 21 20:12:56 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_MKNOD, 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
151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
153	#else
154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
155	#endif
156
157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
159
160	/* worker threads management */
161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
162
163	typedef struct worker {
164	/* locked by wrklock */
165	struct worker *prev, *next;
166
167	pthread_t tid;
168
169	/* locked by reslock, reqlock or wrklock */
170	aio_req req; /* currently processed request */
171	void *dbuf;
172	DIR *dirp;
173	} worker;
174
175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
176
177	static void worker_clear (worker *wrk)
178	{
179	if (wrk->dirp)
180	{
181	closedir (wrk->dirp);
182	wrk->dirp = 0;
183	}
184
185	if (wrk->dbuf)
186	{
187	free (wrk->dbuf);
188	wrk->dbuf = 0;
189	}
190	}
191
192	static void worker_free (worker *wrk)
193	{
194	wrk->next->prev = wrk->prev;
195	wrk->prev->next = wrk->next;
196
197	free (wrk);
198	}
199
200	static volatile unsigned int nreqs, nready, npending;
201	static volatile unsigned int max_outstanding = 0xffffffff;
202	static int respipe [2];
203
204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
207
208	#if WORDREAD_UNSAFE
209
210	static unsigned int get_nready ()
211	{
212	unsigned int retval;
213
214	LOCK (reqlock);
215	retval = nready;
216	UNLOCK (reqlock);
217
218	return retval;
219	}
220
221	static unsigned int get_npending ()
222	{
223	unsigned int retval;
224
225	LOCK (reslock);
226	retval = npending;
227	UNLOCK (reslock);
228
229	return retval;
230	}
231
232	#else
233
234	# define get_nready() nready
235	# define get_npending() npending
236
237	#endif
238
239	/*
240	* a somewhat faster data structure might be nice, but
241	* with 8 priorities this actually needs <20 insns
242	* per shift, the most expensive operation.
243	*/
244	typedef struct {
245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
246	int size;
247	} reqq;
248
249	static reqq req_queue;
250	static reqq res_queue;
251
252	int reqq_push (reqq *q, aio_req req)
253	{
254	int pri = req->pri;
255	req->next = 0;
256
257	if (q->qe[pri])
258	{
259	q->qe[pri]->next = req;
260	q->qe[pri] = req;
261	}
262	else
263	q->qe[pri] = q->qs[pri] = req;
264
265	return q->size++;
266	}
267
268	aio_req reqq_shift (reqq *q)
269	{
270	int pri;
271
272	if (!q->size)
273	return 0;
274
275	--q->size;
276
277	for (pri = NUM_PRI; pri--; )
278	{
279	aio_req req = q->qs[pri];
280
281	if (req)
282	{
283	if (!(q->qs[pri] = req->next))
284	q->qe[pri] = 0;
285
286	return req;
287	}
288	}
289
290	abort ();
291	}
292
293	static int poll_cb (int max);
294	static void req_invoke (aio_req req);
295	static void req_free (aio_req req);	134	static void req_destroy (aio_req req);
296	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	}
297		150
298	/* must be called at most once */	151	/* must be called at most once */
299	static SV *req_sv (aio_req req, const char *klass)	152	static SV *req_sv (aio_req req, const char *klass)
300	{	153	{
301	if (!req->self)	154	if (!req->self)
…		…
319	return mg ? (aio_req)mg->mg_ptr : 0;	172	return mg ? (aio_req)mg->mg_ptr : 0;
320	}	173	}
321		174
322	static void aio_grp_feed (aio_req grp)	175	static void aio_grp_feed (aio_req grp)
323	{	176	{
324	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	177	if (grp->sv2 && SvOK (grp->sv2))
325	{	178	{
326	int old_len = grp->length;
327
328	if (grp->fh2 && SvOK (grp->fh2))
329	{
330	dSP;	179	dSP;
331		180
332	ENTER;	181	ENTER;
333	SAVETMPS;	182	SAVETMPS;
334	PUSHMARK (SP);	183	PUSHMARK (SP);
335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
336	PUTBACK;	185	PUTBACK;
337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
338	SPAGAIN;	187	SPAGAIN;
339	FREETMPS;	188	FREETMPS;
340	LEAVE;	189	LEAVE;
341	}
342
343	/* stop if no progress has been made */
344	if (old_len == grp->length)
345	{
346	SvREFCNT_dec (grp->fh2);
347	grp->fh2 = 0;
348	break;
349	}
350	}	190	}
351	}	191	}
352		192
353	static void aio_grp_dec (aio_req grp)	193	static void req_submit (eio_req *req)
354	{	194	{
355	--grp->length;	195	eio_submit (req);
356		196
357	/* call feeder, if applicable */	197	if (expect_false (on_next_submit))
358	aio_grp_feed (grp);
359
360	/* finish, if done */
361	if (!grp->length && grp->fd)
362	{	198	{
363	req_invoke (grp);	199	dSP;
364	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);
365	}	207	}
366	}	208	}
367		209
368	static void req_invoke (aio_req req)	210	static int req_invoke (eio_req *req)
369	{	211	{
370	dSP;	212	dSP;
371		213
372	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)
373	{	218	{
374	ENTER;	219	ENTER;
375	SAVETMPS;	220	SAVETMPS;
376	PUSHMARK (SP);	221	PUSHMARK (SP);
377	EXTEND (SP, 1);	222	EXTEND (SP, 1);
378		223
379	switch (req->type)	224	switch (req->type)
380	{	225	{
381	case REQ_READDIR:	226	case EIO_READDIR:
382	{	227	{
383	SV *rv = &PL_sv_undef;	228	SV *rv = &PL_sv_undef;
384		229
385	if (req->result >= 0)	230	if (req->result >= 0)
386	{	231	{
387	int i;	232	int i;
388	char *buf = req->data2ptr;	233	char *buf = req->ptr2;
389	AV *av = newAV ();	234	AV *av = newAV ();
390		235
391	av_extend (av, req->result - 1);	236	av_extend (av, req->result - 1);
392		237
393	for (i = 0; i < req->result; ++i)	238	for (i = 0; i < req->result; ++i)
…		…
403		248
404	PUSHs (rv);	249	PUSHs (rv);
405	}	250	}
406	break;	251	break;
407		252
408	case REQ_OPEN:	253	case EIO_OPEN:
409	{	254	{
410	/* convert fd to fh */	255	/* convert fd to fh */
411	SV *fh;	256	SV *fh = &PL_sv_undef;
412		257
413	PUSHs (sv_2mortal (newSViv (req->result)));	258	if (req->result >= 0)
414	PUTBACK;	259	{
415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	260	GV *gv = (GV *)sv_newmortal ();
416	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);
417		267
418	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	);
419		275
		276	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		277	fh = (SV *)gv;
		278	}
		279
420	PUSHMARK (SP);	280	PUSHs (fh);
421	XPUSHs (sv_2mortal (fh));
422	}	281	}
423	break;	282	break;
424		283
425	case REQ_GROUP:	284	case EIO_GROUP:
426	req->fd = 2; /* mark group as finished */	285	req->int1 = 2; /* mark group as finished */
427		286
428	if (req->data)	287	if (req->sv1)
429	{	288	{
430	int i;	289	int i;
431	AV *av = (AV *)req->data;	290	AV *av = (AV *)req->sv1;
432		291
433	EXTEND (SP, AvFILL (av) + 1);	292	EXTEND (SP, AvFILL (av) + 1);
434	for (i = 0; i <= AvFILL (av); ++i)	293	for (i = 0; i <= AvFILL (av); ++i)
435	PUSHs (*av_fetch (av, i, 0));	294	PUSHs (*av_fetch (av, i, 0));
436	}	295	}
437	break;	296	break;
438		297
439	case REQ_NOP:	298	case EIO_NOP:
440	case REQ_BUSY:	299	case EIO_BUSY:
441	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	{
		318	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		319	*SvEND (req->sv2) = 0;
		320	SvPOK_only (req->sv2);
		321	SvSETMAGIC (req->sv2);
		322	PUSHs (sv_2mortal (newSViv (req->result)));
		323	}
		324	break;
		325
		326	case EIO_DUP2:
		327	if (req->result > 0)
		328	req->result = 0;
		329	/* FALLTHROUGH */
442		330
443	default:	331	default:
444	PUSHs (sv_2mortal (newSViv (req->result)));	332	PUSHs (sv_2mortal (newSViv (req->result)));
445	break;	333	break;
446	}	334	}
447		335
448	errno = req->errorno;	336	errno = req->errorno;
449		337
450	PUTBACK;	338	PUTBACK;
451	call_sv (req->callback, G_VOID | G_EVAL);	339	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
452	SPAGAIN;	340	SPAGAIN;
453		341
454	FREETMPS;	342	FREETMPS;
455	LEAVE;	343	LEAVE;
		344
		345	PUTBACK;
456	}	346	}
457		347
458	if (req->grp)	348	return !!SvTRUE (ERRSV);
459	{
460	aio_req grp = req->grp;
461
462	/* unlink request */
463	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
464	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
465
466	if (grp->grp_first == req)
467	grp->grp_first = req->grp_next;
468
469	aio_grp_dec (grp);
470	}
471
472	if (SvTRUE (ERRSV))
473	{
474	req_free (req);
475	croak (0);
476	}
477	}	349	}
478		350
479	static void req_free (aio_req req)	351	static void req_destroy (aio_req req)
480	{	352	{
481	if (req->self)	353	if (req->self)
482	{	354	{
483	sv_unmagic (req->self, PERL_MAGIC_ext);	355	sv_unmagic (req->self, PERL_MAGIC_ext);
484	SvREFCNT_dec (req->self);	356	SvREFCNT_dec (req->self);
485	}	357	}
486		358
487	SvREFCNT_dec (req->data);
488	SvREFCNT_dec (req->fh);	359	SvREFCNT_dec (req->sv1);
489	SvREFCNT_dec (req->fh2);	360	SvREFCNT_dec (req->sv2);
490	SvREFCNT_dec (req->callback);	361	SvREFCNT_dec (req->callback);
491	Safefree (req->statdata);
492
493	if (req->type == REQ_READDIR)
494	free (req->data2ptr);
495		362
496	Safefree (req);	363	Safefree (req);
497	}	364	}
498		365
499	static void req_cancel_subs (aio_req grp)	366	static void req_cancel_subs (aio_req grp)
500	{	367	{
501	aio_req sub;	368	aio_req sub;
502		369
503	if (grp->type != REQ_GROUP)	370	if (grp->type != EIO_GROUP)
504	return;	371	return;
505		372
506	SvREFCNT_dec (grp->fh2);	373	SvREFCNT_dec (grp->sv2);
507	grp->fh2 = 0;	374	grp->sv2 = 0;
508		375
509	for (sub = grp->grp_first; sub; sub = sub->grp_next)	376	eio_grp_cancel (grp);
510	req_cancel (sub);
511	}	377	}
512		378
513	static void req_cancel (aio_req req)	379	#ifdef USE_SOCKETS_AS_HANDLES
514	{	380	# define TO_SOCKET(x) (win32_get_osfhandle (x))
515	req->flags |= FLAG_CANCELLED;	381	#else
516		382	# define TO_SOCKET(x) (x)
517	req_cancel_subs (req);
518	}
519
520	static void *aio_proc(void *arg);
521
522	static void start_thread (void)
523	{
524	sigset_t fullsigset, oldsigset;
525	pthread_attr_t attr;
526
527	worker *wrk = calloc (1, sizeof (worker));
528
529	if (!wrk)
530	croak ("unable to allocate worker thread data");
531
532	pthread_attr_init (&attr);
533	pthread_attr_setstacksize (&attr, STACKSIZE);
534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
535	#ifdef PTHREAD_SCOPE_PROCESS
536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
537	#endif	383	#endif
538		384
539	sigfillset (&fullsigset);	385	static void
		386	create_respipe (void)
		387	{
		388	int old_readfd = respipe [0];
540		389
541	LOCK (wrklock);	390	if (respipe [1] >= 0)
542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	391	respipe_close (TO_SOCKET (respipe [1]));
543		392
544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	393	#ifdef _WIN32
		394	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		395	#else
		396	if (pipe (respipe))
		397	#endif
		398	croak ("unable to initialize result pipe");
		399
		400	if (old_readfd >= 0)
545	{	401	{
546	wrk->prev = &wrk_first;	402	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
547	wrk->next = wrk_first.next;	403	croak ("unable to initialize result pipe(2)");
548	wrk_first.next->prev = wrk;	404
549	wrk_first.next = wrk;	405	respipe_close (respipe [0]);
550	++started;	406	respipe [0] = old_readfd;
551	}	407	}
552	else
553	free (wrk);
554		408
555	sigprocmask (SIG_SETMASK, &oldsigset, 0);	409	#ifdef _WIN32
556	UNLOCK (wrklock);	410	int arg = 1;
557	}	411	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
558		412	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
559	static void maybe_start_thread ()	413	#else
560	{	414	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
561	#if 0	415	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
562	static struct timeval last;
563	struct timeval diff, now;
564	#endif	416	#endif
		417	croak ("unable to initialize result pipe(3)");
565		418
566	if (started >= wanted)	419	respipe_osf [0] = TO_SOCKET (respipe [0]);
567	return;	420	respipe_osf [1] = TO_SOCKET (respipe [1]);
568
569	if (nready <= nreqs - get_nready () - get_npending ())
570	return;
571
572	#if 0
573	gettimeofday (&now, 0);
574
575	diff.tv_sec = now.tv_sec - last.tv_sec;
576	diff.tv_usec = now.tv_usec - last.tv_usec;
577
578	if (diff.tv_usec < 0)
579	{
580	--diff.tv_sec;
581	diff.tv_usec += 1000000;
582	}
583
584	if (!diff.tv_sec && diff.tv_usec < 10000)
585	return;
586
587	last = now;
588	#endif
589
590	start_thread ();
591	}	421	}
592		422
593	static void req_send (aio_req req)
594	{
595	++nreqs;
596
597	LOCK (reqlock);
598	++nready;
599	reqq_push (&req_queue, req);
600	pthread_cond_signal (&reqwait);
601	UNLOCK (reqlock);
602
603	maybe_start_thread ();
604	}
605
606	static void end_thread (void)
607	{
608	aio_req req;
609
610	Newz (0, req, 1, aio_cb);
611
612	req->type = REQ_QUIT;
613	req->pri = PRI_MAX + PRI_BIAS;
614
615	req_send (req);
616
617	LOCK (wrklock);
618	--started;
619	UNLOCK (wrklock);
620	}
621
622	static void min_parallel (int nthreads)
623	{
624	if (wanted < nthreads)
625	wanted = nthreads;
626	}
627
628	static void max_parallel (int nthreads)
629	{
630	if (wanted > nthreads)
631	wanted = nthreads;
632
633	while (started > wanted)
634	end_thread ();
635	}
636
637	static void poll_wait ()	423	static void poll_wait (void)
638	{	424	{
639	fd_set rfd;	425	fd_set rfd;
640		426
641	while (nreqs)	427	while (eio_nreqs ())
642	{	428	{
643	int size;	429	int size;
644	if (WORDREAD_UNSAFE) LOCK (reslock);	430
		431	X_LOCK (reslock);
645	size = res_queue.size;	432	size = res_queue.size;
646	if (WORDREAD_UNSAFE) UNLOCK (reslock);	433	X_UNLOCK (reslock);
647		434
648	if (size)	435	if (size)
649	return;	436	return;
650		437
651	maybe_start_thread ();	438	etp_maybe_start_thread ();
652		439
653	FD_ZERO(&rfd);	440	FD_ZERO (&rfd);
654	FD_SET(respipe [0], &rfd);	441	FD_SET (respipe [0], &rfd);
655		442
656	select (respipe [0] + 1, &rfd, 0, 0, 0);	443	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
657	}	444	}
658	}	445	}
659		446
660	static int poll_cb (int max)	447	static int poll_cb (void)
661	{	448	{
662	dSP;
663	int count = 0;
664	int do_croak = 0;
665	aio_req req;
666
667	for (;;)	449	for (;;)
668	{	450	{
669	while (max <= 0 || count < max)	451	int res = eio_poll ();
670	{
671	maybe_start_thread ();
672		452
673	LOCK (reslock);	453	if (res > 0)
674	req = reqq_shift (&res_queue);
675
676	if (req)
677	{
678	--npending;
679
680	if (!res_queue.size)
681	{
682	/* read any signals sent by the worker threads */
683	char buf [32];
684	while (read (respipe [0], buf, 32) == 32)
685	;
686	}
687	}
688
689	UNLOCK (reslock);
690
691	if (!req)
692	break;
693
694	--nreqs;
695
696	if (req->type == REQ_GROUP && req->length)
697	{
698	req->fd = 1; /* mark request as delayed */
699	continue;
700	}
701	else
702	{
703	if (req->type == REQ_READ)
704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
705
706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
707	SvREADONLY_off (req->data);
708
709	if (req->statdata)
710	{
711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
712	PL_laststatval = req->result;
713	PL_statcache = *(req->statdata);
714	}
715
716	req_invoke (req);
717
718	count++;
719	}
720
721	req_free (req);
722	}
723
724	if (nreqs <= max_outstanding)
725	break;	454	croak (0);
		455
		456	if (!max_outstanding || max_outstanding > eio_nreqs ())
		457	return res;
726		458
727	poll_wait ();	459	poll_wait ();
728
729	max = 0;
730	}	460	}
731
732	return count;
733	}	461	}
734		462
735	static void create_pipe ()	463	static void atfork_child (void)
736	{	464	{
737	if (pipe (respipe))	465	create_respipe ();
738	croak ("unable to initialize result pipe");
739
740	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
741	croak ("cannot set result pipe to nonblocking mode");
742
743	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
744	croak ("cannot set result pipe to nonblocking mode");
745	}	466	}
746		467
747	/*****************************************************************************/	468	static SV *
748	/* work around various missing functions */	469	get_cb (SV *cb_sv)
749
750	#if !HAVE_PREADWRITE
751	# define pread aio_pread
752	# define pwrite aio_pwrite
753
754	/*
755	* make our pread/pwrite safe against themselves, but not against
756	* normal read/write by using a mutex. slows down execution a lot,
757	* but that's your problem, not mine.
758	*/
759	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
760
761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
762	{	470	{
763	ssize_t res;	471	HV *st;
764	off_t ooffset;	472	GV *gvp;
		473	CV *cv;
765		474
766	LOCK (preadwritelock);	475	if (!SvOK (cb_sv))
767	ooffset = lseek (fd, 0, SEEK_CUR);
768	lseek (fd, offset, SEEK_SET);
769	res = read (fd, buf, count);
770	lseek (fd, ooffset, SEEK_SET);
771	UNLOCK (preadwritelock);
772
773	return res;
774	}
775
776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
777	{
778	ssize_t res;
779	off_t ooffset;
780
781	LOCK (preadwritelock);
782	ooffset = lseek (fd, 0, SEEK_CUR);
783	lseek (fd, offset, SEEK_SET);
784	res = write (fd, buf, count);
785	lseek (fd, offset, SEEK_SET);
786	UNLOCK (preadwritelock);
787
788	return res;
789	}
790	#endif
791
792	#if !HAVE_FDATASYNC
793	# define fdatasync fsync
794	#endif
795
796	#if !HAVE_READAHEAD
797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
798
799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
800	{
801	dBUF;
802
803	while (count > 0)
804	{
805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
806
807	pread (fd, aio_buf, len, offset);
808	offset += len;
809	count -= len;
810	}
811
812	errno = 0;
813	}
814
815	#endif
816
817	#if !HAVE_READDIR_R
818	# define readdir_r aio_readdir_r
819
820	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
821
822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
823	{
824	struct dirent *e;
825	int errorno;
826
827	LOCK (readdirlock);
828
829	e = readdir (dirp);
830	errorno = errno;
831
832	if (e)
833	{
834	*res = ent;
835	strcpy (ent->d_name, e->d_name);
836	}
837	else
838	*res = 0;
839
840	UNLOCK (readdirlock);
841
842	errno = errorno;
843	return e ? 0 : -1;
844	}
845	#endif
846
847	/* sendfile always needs emulation */
848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
849	{
850	ssize_t res;
851
852	if (!count)
853	return 0;	476	return 0;
854		477
855	#if HAVE_SENDFILE	478	cv = sv_2cv (cb_sv, &st, &gvp, 0);
856	# if __linux
857	res = sendfile (ofd, ifd, &offset, count);
858		479
859	# elif __freebsd	480	if (!cv)
860	/*	481	croak ("IO::AIO callback must be undef or a CODE reference");
861	* Of course, the freebsd sendfile is a dire hack with no thoughts
862	* wasted on making it similar to other I/O functions.
863	*/
864	{
865	off_t sbytes;
866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
867		482
868	if (res < 0 && sbytes)	483	return (SV *)cv;
869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
870	res = sbytes;
871	}
872
873	# elif __hpux
874	res = sendfile (ofd, ifd, offset, count, 0, 0);
875
876	# elif __solaris
877	{
878	struct sendfilevec vec;
879	size_t sbytes;
880
881	vec.sfv_fd = ifd;
882	vec.sfv_flag = 0;
883	vec.sfv_off = offset;
884	vec.sfv_len = count;
885
886	res = sendfilev (ofd, &vec, 1, &sbytes);
887
888	if (res < 0 && sbytes)
889	res = sbytes;
890	}
891
892	# endif
893	#else
894	res = -1;
895	errno = ENOSYS;
896	#endif
897
898	if (res < 0
899	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
900	#if __solaris
901	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
902	#endif
903	)
904	)
905	{
906	/* emulate sendfile. this is a major pain in the ass */
907	dBUF;
908
909	res = 0;
910
911	while (count)
912	{
913	ssize_t cnt;
914
915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
916
917	if (cnt <= 0)
918	{
919	if (cnt && !res) res = -1;
920	break;
921	}
922
923	cnt = write (ofd, aio_buf, cnt);
924
925	if (cnt <= 0)
926	{
927	if (cnt && !res) res = -1;
928	break;
929	}
930
931	offset += cnt;
932	res += cnt;
933	count -= cnt;
934	}
935	}
936
937	return res;
938	}
939
940	/* read a full directory */
941	static void scandir_ (aio_req req, worker *self)
942	{
943	DIR *dirp;
944	union
945	{
946	struct dirent d;
947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
948	} *u;
949	struct dirent *entp;
950	char *name, *names;
951	int memlen = 4096;
952	int memofs = 0;
953	int res = 0;
954	int errorno;
955
956	LOCK (wrklock);
957	self->dirp = dirp = opendir (req->dataptr);
958	self->dbuf = u = malloc (sizeof (*u));
959	req->data2ptr = names = malloc (memlen);
960	UNLOCK (wrklock);
961
962	if (dirp && u && names)
963	for (;;)
964	{
965	errno = 0;
966	readdir_r (dirp, &u->d, &entp);
967
968	if (!entp)
969	break;
970
971	name = entp->d_name;
972
973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
974	{
975	int len = strlen (name) + 1;
976
977	res++;
978
979	while (memofs + len > memlen)
980	{
981	memlen *= 2;
982	LOCK (wrklock);
983	req->data2ptr = names = realloc (names, memlen);
984	UNLOCK (wrklock);
985
986	if (!names)
987	break;
988	}
989
990	memcpy (names + memofs, name, len);
991	memofs += len;
992	}
993	}
994
995	if (errno)
996	res = -1;
997
998	req->result = res;
999	}
1000
1001	/*****************************************************************************/
1002
1003	static void *aio_proc (void *thr_arg)
1004	{
1005	aio_req req;
1006	worker *self = (worker *)thr_arg;
1007
1008	for (;;)
1009	{
1010	LOCK (reqlock);
1011
1012	for (;;)
1013	{
1014	self->req = req = reqq_shift (&req_queue);
1015
1016	if (req)
1017	break;
1018
1019	pthread_cond_wait (&reqwait, &reqlock);
1020	}
1021
1022	--nready;
1023
1024	UNLOCK (reqlock);
1025
1026	errno = 0; /* strictly unnecessary */
1027
1028	if (!(req->flags & FLAG_CANCELLED))
1029	switch (req->type)
1030	{
1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1033
1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1036
1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1040
1041	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1042	case REQ_CLOSE: req->result = close (req->fd); break;
1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1049
1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1051	case REQ_FSYNC: req->result = fsync (req->fd); break;
1052	case REQ_READDIR: scandir_ (req, self); break;
1053
1054	case REQ_BUSY:
1055	{
1056	struct timeval tv;
1057
1058	tv.tv_sec = req->fd;
1059	tv.tv_usec = req->fd2;
1060
1061	req->result = select (0, 0, 0, 0, &tv);
1062	}
1063
1064	case REQ_GROUP:
1065	case REQ_NOP:
1066	break;
1067
1068	case REQ_QUIT:
1069	LOCK (wrklock);
1070	worker_free (self);
1071	--started;
1072	UNLOCK (wrklock);
1073	return 0;
1074
1075	default:
1076	req->result = ENOSYS;
1077	break;
1078	}
1079
1080	req->errorno = errno;
1081
1082	LOCK (reslock);
1083
1084	++npending;
1085
1086	if (!reqq_push (&res_queue, req))
1087	/* write a dummy byte to the pipe so fh becomes ready */
1088	write (respipe [1], &respipe, 1);
1089
1090	self->req = 0;
1091	worker_clear (self);
1092
1093	UNLOCK (reslock);
1094	}
1095	}
1096
1097	/*****************************************************************************/
1098
1099	static void atfork_prepare (void)
1100	{
1101	LOCK (wrklock);
1102	LOCK (reqlock);
1103	LOCK (reslock);
1104	#if !HAVE_PREADWRITE
1105	LOCK (preadwritelock);
1106	#endif
1107	#if !HAVE_READDIR_R
1108	LOCK (readdirlock);
1109	#endif
1110	}
1111
1112	static void atfork_parent (void)
1113	{
1114	#if !HAVE_READDIR_R
1115	UNLOCK (readdirlock);
1116	#endif
1117	#if !HAVE_PREADWRITE
1118	UNLOCK (preadwritelock);
1119	#endif
1120	UNLOCK (reslock);
1121	UNLOCK (reqlock);
1122	UNLOCK (wrklock);
1123	}
1124
1125	static void atfork_child (void)
1126	{
1127	aio_req prv;
1128
1129	while (prv = reqq_shift (&req_queue))
1130	req_free (prv);
1131
1132	while (prv = reqq_shift (&res_queue))
1133	req_free (prv);
1134
1135	while (wrk_first.next != &wrk_first)
1136	{
1137	worker *wrk = wrk_first.next;
1138
1139	if (wrk->req)
1140	req_free (wrk->req);
1141
1142	worker_clear (wrk);
1143	worker_free (wrk);
1144	}
1145
1146	started = 0;
1147	nreqs = 0;
1148
1149	close (respipe [0]);
1150	close (respipe [1]);
1151	create_pipe ();
1152
1153	atfork_parent ();
1154	}	484	}
1155		485
1156	#define dREQ \	486	#define dREQ \
		487	SV *cb_cv; \
1157	aio_req req; \	488	aio_req req; \
1158	int req_pri = next_pri; \	489	int req_pri = next_pri; \
1159	next_pri = DEFAULT_PRI + PRI_BIAS; \	490	next_pri = EIO_PRI_DEFAULT; \
1160	\	491	\
1161	if (SvOK (callback) && !SvROK (callback)) \	492	cb_cv = get_cb (callback); \
1162	croak ("callback must be undef or of reference type"); \
1163	\	493	\
1164	Newz (0, req, 1, aio_cb); \	494	Newz (0, req, 1, eio_req); \
1165	if (!req) \	495	if (!req) \
1166	croak ("out of memory during aio_req allocation"); \	496	croak ("out of memory during eio_req allocation"); \
1167	\	497	\
1168	req->callback = newSVsv (callback); \	498	req->callback = SvREFCNT_inc (cb_cv); \
1169	req->pri = req_pri	499	req->pri = req_pri
1170		500
1171	#define REQ_SEND \	501	#define REQ_SEND \
		502	PUTBACK; \
1172	req_send (req); \	503	req_submit (req); \
		504	SPAGAIN; \
1173	\	505	\
1174	if (GIMME_V != G_VOID) \	506	if (GIMME_V != G_VOID) \
1175	XPUSHs (req_sv (req, AIO_REQ_KLASS));	507	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1176		508
		509	static int
		510	extract_fd (SV *fh, int wr)
		511	{
		512	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		513
		514	if (fd < 0)
		515	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		516
		517	return fd;
		518	}
		519
1177	MODULE = IO::AIO PACKAGE = IO::AIO	520	MODULE = IO::AIO PACKAGE = IO::AIO
1178		521
1179	PROTOTYPES: ENABLE	522	PROTOTYPES: ENABLE
1180		523
1181	BOOT:	524	BOOT:
1182	{	525	{
1183	HV *stash = gv_stashpv ("IO::AIO", 1);	526	stash = gv_stashpv ("IO::AIO", 1);
		527
1184	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	528	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1185	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	529	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1186	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	530	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1187	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	531	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1188	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	532	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		533	#ifndef _WIN32
		534	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		535	#endif
		536	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		537	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_BEFORE", newSViv (EIO_SYNC_FILE_RANGE_WAIT_BEFORE));
		538	newCONSTSUB (stash, "SYNC_FILE_RANGE_WRITE" , newSViv (EIO_SYNC_FILE_RANGE_WRITE));
		539	newCONSTSUB (stash, "SYNC_FILE_RANGE_WAIT_AFTER" , newSViv (EIO_SYNC_FILE_RANGE_WAIT_AFTER));
1189		540
1190	create_pipe ();	541	create_respipe ();
1191	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1192		542
1193	start_thread ();	543	if (eio_init (want_poll, done_poll) < 0)
		544	croak ("IO::AIO: unable to initialise eio library");
		545
		546	/* atfork child called in fifo order, so before eio's handler */
		547	X_THREAD_ATFORK (0, 0, atfork_child);
1194	}	548	}
		549
		550	void
		551	max_poll_reqs (int nreqs)
		552	PROTOTYPE: $
		553	CODE:
		554	eio_set_max_poll_reqs (nreqs);
		555
		556	void
		557	max_poll_time (double nseconds)
		558	PROTOTYPE: $
		559	CODE:
		560	eio_set_max_poll_time (nseconds);
1195		561
1196	void	562	void
1197	min_parallel (int nthreads)	563	min_parallel (int nthreads)
1198	PROTOTYPE: $	564	PROTOTYPE: $
		565	CODE:
		566	eio_set_min_parallel (nthreads);
1199		567
1200	void	568	void
1201	max_parallel (int nthreads)	569	max_parallel (int nthreads)
1202	PROTOTYPE: $	570	PROTOTYPE: $
		571	CODE:
		572	eio_set_max_parallel (nthreads);
1203		573
1204	int	574	void
		575	max_idle (int nthreads)
		576	PROTOTYPE: $
		577	CODE:
		578	eio_set_max_idle (nthreads);
		579
		580	void
1205	max_outstanding (int maxreqs)	581	max_outstanding (int maxreqs)
1206	PROTOTYPE: $	582	PROTOTYPE: $
1207	CODE:	583	CODE:
1208	RETVAL = max_outstanding;
1209	max_outstanding = maxreqs;	584	max_outstanding = maxreqs;
1210	OUTPUT:
1211	RETVAL
1212		585
1213	void	586	void
1214	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	587	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1215	SV * pathname
1216	int flags
1217	int mode
1218	SV * callback
1219	PROTOTYPE: $$$;$	588	PROTOTYPE: $$$;$
1220	PPCODE:	589	PPCODE:
1221	{	590	{
1222	dREQ;	591	dREQ;
1223		592
1224	req->type = REQ_OPEN;	593	req->type = EIO_OPEN;
1225	req->data = newSVsv (pathname);	594	req->sv1 = newSVsv (pathname);
1226	req->dataptr = SvPVbyte_nolen (req->data);	595	req->ptr1 = SvPVbyte_nolen (req->sv1);
1227	req->fd = flags;	596	req->int1 = flags;
1228	req->mode = mode;	597	req->int2 = mode;
1229		598
1230	REQ_SEND;	599	REQ_SEND;
1231	}	600	}
1232		601
1233	void	602	void
1234	aio_close (fh,callback=&PL_sv_undef)	603	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1235	SV * fh
1236	SV * callback
1237	PROTOTYPE: $;$	604	PROTOTYPE: $;$
1238	ALIAS:	605	ALIAS:
1239	aio_close = REQ_CLOSE
1240	aio_fsync = REQ_FSYNC	606	aio_fsync = EIO_FSYNC
1241	aio_fdatasync = REQ_FDATASYNC	607	aio_fdatasync = EIO_FDATASYNC
1242	PPCODE:	608	PPCODE:
1243	{	609	{
		610	int fd = extract_fd (fh, 0);
1244	dREQ;	611	dREQ;
1245		612
1246	req->type = ix;	613	req->type = ix;
1247	req->fh = newSVsv (fh);	614	req->sv1 = newSVsv (fh);
1248	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	615	req->int1 = fd;
1249		616
1250	REQ_SEND (req);	617	REQ_SEND (req);
1251	}	618	}
1252		619
1253	void	620	void
		621	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		622	PROTOTYPE: $$$$;$
		623	PPCODE:
		624	{
		625	int fd = extract_fd (fh, 0);
		626	dREQ;
		627
		628	req->type = EIO_SYNC_FILE_RANGE;
		629	req->sv1 = newSVsv (fh);
		630	req->int1 = fd;
		631	req->offs = SvVAL64 (offset);
		632	req->size = SvVAL64 (nbytes);
		633	req->int2 = flags;
		634
		635	REQ_SEND (req);
		636	}
		637
		638	void
		639	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		640	PROTOTYPE: $;$
		641	PPCODE:
		642	{
		643	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		644	int fd = extract_fd (fh, 0);
		645	dREQ;
		646
		647	if (close_pipe < 0)
		648	{
		649	int pipefd [2];
		650
		651	if (pipe (pipefd) < 0
		652	|| close (pipefd [1]) < 0
		653	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		654	abort (); /*D*/
		655
		656	close_pipe = pipefd [0];
		657	}
		658
		659	req->type = EIO_DUP2;
		660	req->int1 = close_pipe;
		661	req->sv2 = newSVsv (fh);
		662	req->int2 = fd;
		663
		664	REQ_SEND (req);
		665	}
		666
		667	void
1254	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	668	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1255	SV * fh
1256	UV offset
1257	UV length
1258	SV * data
1259	UV dataoffset
1260	SV * callback
1261	ALIAS:	669	ALIAS:
1262	aio_read = REQ_READ	670	aio_read = EIO_READ
1263	aio_write = REQ_WRITE	671	aio_write = EIO_WRITE
1264	PROTOTYPE: $$$$$;$	672	PROTOTYPE: $$$$$;$
1265	PPCODE:	673	PPCODE:
1266	{	674	{
1267	aio_req req;
1268	STRLEN svlen;	675	STRLEN svlen;
		676	int fd = extract_fd (fh, ix == EIO_WRITE);
1269	char *svptr = SvPVbyte (data, svlen);	677	char *svptr = SvPVbyte (data, svlen);
1270		678	UV len = SvUV (length);
1271	SvUPGRADE (data, SVt_PV);
1272	SvPOK_on (data);
1273		679
1274	if (dataoffset < 0)	680	if (dataoffset < 0)
1275	dataoffset += svlen;	681	dataoffset += svlen;
1276		682
1277	if (dataoffset < 0 || dataoffset > svlen)	683	if (dataoffset < 0 || dataoffset > svlen)
1278	croak ("data offset outside of string");	684	croak ("dataoffset outside of data scalar");
1279		685
1280	if (ix == REQ_WRITE)	686	if (ix == EIO_WRITE)
1281	{	687	{
1282	/* write: check length and adjust. */	688	/* write: check length and adjust. */
1283	if (length < 0 || length + dataoffset > svlen)	689	if (!SvOK (length) || len + dataoffset > svlen)
1284	length = svlen - dataoffset;	690	len = svlen - dataoffset;
1285	}	691	}
1286	else	692	else
1287	{	693	{
1288	/* read: grow scalar as necessary */	694	/* read: check type and grow scalar as necessary */
		695	SvUPGRADE (data, SVt_PV);
1289	svptr = SvGROW (data, length + dataoffset);	696	svptr = SvGROW (data, len + dataoffset + 1);
1290	}	697	}
1291
1292	if (length < 0)
1293	croak ("length must not be negative");
1294		698
1295	{	699	{
1296	dREQ;	700	dREQ;
1297		701
1298	req->type = ix;	702	req->type = ix;
1299	req->fh = newSVsv (fh);	703	req->sv1 = newSVsv (fh);
1300	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	704	req->int1 = fd;
1301	: IoOFP (sv_2io (fh)));	705	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1302	req->offset = offset;	706	req->size = len;
1303	req->length = length;
1304	req->data = SvREFCNT_inc (data);	707	req->sv2 = SvREFCNT_inc (data);
1305	req->dataptr = (char *)svptr + dataoffset;	708	req->ptr2 = (char *)svptr + dataoffset;
		709	req->stroffset = dataoffset;
1306		710
1307	if (!SvREADONLY (data))	711	if (!SvREADONLY (data))
1308	{	712	{
1309	SvREADONLY_on (data);	713	SvREADONLY_on (data);
1310	req->data2ptr = (void *)data;	714	req->flags |= FLAG_SV2_RO_OFF;
1311	}	715	}
1312		716
1313	REQ_SEND;	717	REQ_SEND;
1314	}	718	}
1315	}	719	}
1316		720
1317	void	721	void
		722	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		723	PROTOTYPE: $$;$
		724	PPCODE:
		725	{
		726	SV *data;
		727	dREQ;
		728
		729	req->type = EIO_READLINK;
		730	req->sv1 = newSVsv (path);
		731	req->ptr1 = SvPVbyte_nolen (req->sv1);
		732
		733	REQ_SEND;
		734	}
		735
		736	void
1318	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	737	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1319	SV * out_fh
1320	SV * in_fh
1321	UV in_offset
1322	UV length
1323	SV * callback
1324	PROTOTYPE: $$$$;$	738	PROTOTYPE: $$$$;$
1325	PPCODE:	739	PPCODE:
1326	{	740	{
		741	int ifd = extract_fd (in_fh , 0);
		742	int ofd = extract_fd (out_fh, 0);
1327	dREQ;	743	dREQ;
1328		744
1329	req->type = REQ_SENDFILE;	745	req->type = EIO_SENDFILE;
1330	req->fh = newSVsv (out_fh);	746	req->sv1 = newSVsv (out_fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	747	req->int1 = ofd;
1332	req->fh2 = newSVsv (in_fh);	748	req->sv2 = newSVsv (in_fh);
1333	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	749	req->int2 = ifd;
1334	req->offset = in_offset;	750	req->offs = SvVAL64 (in_offset);
1335	req->length = length;	751	req->size = length;
1336		752
1337	REQ_SEND;	753	REQ_SEND;
1338	}	754	}
1339		755
1340	void	756	void
1341	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	757	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1342	SV * fh
1343	UV offset
1344	IV length
1345	SV * callback
1346	PROTOTYPE: $$$;$	758	PROTOTYPE: $$$;$
1347	PPCODE:	759	PPCODE:
1348	{	760	{
		761	int fd = extract_fd (fh, 0);
1349	dREQ;	762	dREQ;
1350		763
1351	req->type = REQ_READAHEAD;	764	req->type = EIO_READAHEAD;
1352	req->fh = newSVsv (fh);	765	req->sv1 = newSVsv (fh);
1353	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	766	req->int1 = fd;
1354	req->offset = offset;	767	req->offs = SvVAL64 (offset);
1355	req->length = length;	768	req->size = length;
1356		769
1357	REQ_SEND;	770	REQ_SEND;
1358	}	771	}
1359		772
1360	void	773	void
1361	aio_stat (fh_or_path,callback=&PL_sv_undef)	774	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1362	SV * fh_or_path
1363	SV * callback
1364	ALIAS:	775	ALIAS:
1365	aio_stat = REQ_STAT	776	aio_stat = EIO_STAT
1366	aio_lstat = REQ_LSTAT	777	aio_lstat = EIO_LSTAT
1367	PPCODE:	778	PPCODE:
1368	{	779	{
1369	dREQ;	780	dREQ;
1370		781
1371	New (0, req->statdata, 1, Stat_t);	782	req->sv1 = newSVsv (fh_or_path);
1372	if (!req->statdata)
1373	{
1374	req_free (req);
1375	croak ("out of memory during aio_req->statdata allocation");
1376	}
1377		783
1378	if (SvPOK (fh_or_path))	784	if (SvPOK (req->sv1))
1379	{	785	{
1380	req->type = ix;	786	req->type = ix;
1381	req->data = newSVsv (fh_or_path);
1382	req->dataptr = SvPVbyte_nolen (req->data);	787	req->ptr1 = SvPVbyte_nolen (req->sv1);
1383	}	788	}
1384	else	789	else
1385	{	790	{
1386	req->type = REQ_FSTAT;	791	req->type = EIO_FSTAT;
1387	req->fh = newSVsv (fh_or_path);
1388	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	792	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1389	}	793	}
1390		794
1391	REQ_SEND;	795	REQ_SEND;
1392	}	796	}
1393		797
1394	void	798	void
		799	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		800	PPCODE:
		801	{
		802	dREQ;
		803
		804	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		805	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		806	req->sv1 = newSVsv (fh_or_path);
		807
		808	if (SvPOK (req->sv1))
		809	{
		810	req->type = EIO_UTIME;
		811	req->ptr1 = SvPVbyte_nolen (req->sv1);
		812	}
		813	else
		814	{
		815	req->type = EIO_FUTIME;
		816	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		817	}
		818
		819	REQ_SEND;
		820	}
		821
		822	void
		823	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		824	PPCODE:
		825	{
		826	dREQ;
		827
		828	req->sv1 = newSVsv (fh_or_path);
		829	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		830
		831	if (SvPOK (req->sv1))
		832	{
		833	req->type = EIO_TRUNCATE;
		834	req->ptr1 = SvPVbyte_nolen (req->sv1);
		835	}
		836	else
		837	{
		838	req->type = EIO_FTRUNCATE;
		839	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		840	}
		841
		842	REQ_SEND;
		843	}
		844
		845	void
		846	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		847	ALIAS:
		848	aio_chmod = EIO_CHMOD
		849	aio_mkdir = EIO_MKDIR
		850	PPCODE:
		851	{
		852	dREQ;
		853
		854	req->int2 = mode;
		855	req->sv1 = newSVsv (fh_or_path);
		856
		857	if (SvPOK (req->sv1))
		858	{
		859	req->type = ix;
		860	req->ptr1 = SvPVbyte_nolen (req->sv1);
		861	}
		862	else
		863	{
		864	req->type = EIO_FCHMOD;
		865	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		866	}
		867
		868	REQ_SEND;
		869	}
		870
		871	void
		872	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		873	PPCODE:
		874	{
		875	dREQ;
		876
		877	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		878	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		879	req->sv1 = newSVsv (fh_or_path);
		880
		881	if (SvPOK (req->sv1))
		882	{
		883	req->type = EIO_CHOWN;
		884	req->ptr1 = SvPVbyte_nolen (req->sv1);
		885	}
		886	else
		887	{
		888	req->type = EIO_FCHOWN;
		889	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		890	}
		891
		892	REQ_SEND;
		893	}
		894
		895	void
1395	aio_unlink (pathname,callback=&PL_sv_undef)	896	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1396	SV * pathname
1397	SV * callback
1398	ALIAS:	897	ALIAS:
1399	aio_unlink = REQ_UNLINK	898	aio_unlink = EIO_UNLINK
1400	aio_rmdir = REQ_RMDIR	899	aio_rmdir = EIO_RMDIR
1401	aio_readdir = REQ_READDIR	900	aio_readdir = EIO_READDIR
1402	PPCODE:	901	PPCODE:
1403	{	902	{
1404	dREQ;	903	dREQ;
1405		904
1406	req->type = ix;	905	req->type = ix;
1407	req->data = newSVsv (pathname);	906	req->sv1 = newSVsv (pathname);
1408	req->dataptr = SvPVbyte_nolen (req->data);	907	req->ptr1 = SvPVbyte_nolen (req->sv1);
		908
		909	REQ_SEND;
		910	}
		911
		912	void
		913	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		914	ALIAS:
		915	aio_link = EIO_LINK
		916	aio_symlink = EIO_SYMLINK
		917	aio_rename = EIO_RENAME
		918	PPCODE:
		919	{
		920	dREQ;
		921
		922	req->type = ix;
		923	req->sv1 = newSVsv (oldpath);
		924	req->ptr1 = SvPVbyte_nolen (req->sv1);
		925	req->sv2 = newSVsv (newpath);
		926	req->ptr2 = SvPVbyte_nolen (req->sv2);
1409		927
1410	REQ_SEND;	928	REQ_SEND;
1411	}	929	}
1412		930
1413	void	931	void
1414	aio_link (oldpath,newpath,callback=&PL_sv_undef)	932	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1415	SV * oldpath
1416	SV * newpath
1417	SV * callback
1418	ALIAS:
1419	aio_link = REQ_LINK
1420	aio_symlink = REQ_SYMLINK
1421	aio_rename = REQ_RENAME
1422	PPCODE:	933	PPCODE:
1423	{	934	{
1424	dREQ;	935	dREQ;
1425		936
1426	req->type = ix;	937	req->type = EIO_MKNOD;
1427	req->fh = newSVsv (oldpath);	938	req->sv1 = newSVsv (pathname);
1428	req->data2ptr = SvPVbyte_nolen (req->fh);	939	req->ptr1 = SvPVbyte_nolen (req->sv1);
1429	req->data = newSVsv (newpath);	940	req->int2 = (mode_t)mode;
1430	req->dataptr = SvPVbyte_nolen (req->data);	941	req->offs = dev;
1431		942
1432	REQ_SEND;	943	REQ_SEND;
1433	}	944	}
1434		945
1435	void	946	void
1436	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	947	aio_busy (double delay, SV *callback=&PL_sv_undef)
1437	SV * pathname
1438	SV * callback
1439	UV mode
1440	UV dev
1441	PPCODE:	948	PPCODE:
1442	{	949	{
1443	dREQ;	950	dREQ;
1444		951
1445	req->type = REQ_MKNOD;	952	req->type = EIO_BUSY;
1446	req->data = newSVsv (pathname);	953	req->nv1 = delay < 0. ? 0. : delay;
1447	req->dataptr = SvPVbyte_nolen (req->data);	954
1448	req->mode = (mode_t)mode;
1449	req->offset = dev;
1450
1451	REQ_SEND;	955	REQ_SEND;
1452	}	956	}
1453		957
1454	void	958	void
1455	aio_busy (delay,callback=&PL_sv_undef)
1456	double delay
1457	SV * callback
1458	PPCODE:
1459	{
1460	dREQ;
1461
1462	req->type = REQ_BUSY;
1463	req->fd = delay < 0. ? 0 : delay;
1464	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1465
1466	REQ_SEND;
1467	}
1468
1469	void
1470	aio_group (callback=&PL_sv_undef)	959	aio_group (SV *callback=&PL_sv_undef)
1471	SV * callback
1472	PROTOTYPE: ;$	960	PROTOTYPE: ;$
1473	PPCODE:	961	PPCODE:
1474	{	962	{
1475	dREQ;	963	dREQ;
1476		964
1477	req->type = REQ_GROUP;	965	req->type = EIO_GROUP;
		966
1478	req_send (req);	967	req_submit (req);
1479
1480	XPUSHs (req_sv (req, AIO_GRP_KLASS));	968	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1481	}	969	}
1482		970
1483	void	971	void
1484	aio_nop (callback=&PL_sv_undef)	972	aio_nop (SV *callback=&PL_sv_undef)
1485	SV * callback	973	ALIAS:
		974	aio_nop = EIO_NOP
		975	aio_sync = EIO_SYNC
1486	PPCODE:	976	PPCODE:
1487	{	977	{
1488	dREQ;	978	dREQ;
1489		979
1490	req->type = REQ_NOP;	980	req->type = ix;
1491		981
1492	REQ_SEND;	982	REQ_SEND;
1493	}	983	}
1494		984
1495	int	985	int
1496	aioreq_pri (int pri = 0)	986	aioreq_pri (int pri = 0)
1497	PROTOTYPE: ;$	987	PROTOTYPE: ;$
1498	CODE:	988	CODE:
1499	RETVAL = next_pri - PRI_BIAS;	989	RETVAL = next_pri;
1500	if (items > 0)	990	if (items > 0)
1501	{	991	{
1502	if (pri < PRI_MIN) pri = PRI_MIN;	992	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1503	if (pri > PRI_MAX) pri = PRI_MAX;	993	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1504	next_pri = pri + PRI_BIAS;	994	next_pri = pri;
1505	}	995	}
1506	OUTPUT:	996	OUTPUT:
1507	RETVAL	997	RETVAL
1508		998
1509	void	999	void
1510	aioreq_nice (int nice = 0)	1000	aioreq_nice (int nice = 0)
1511	CODE:	1001	CODE:
1512	nice = next_pri - nice;	1002	nice = next_pri - nice;
1513	if (nice < PRI_MIN) nice = PRI_MIN;	1003	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1514	if (nice > PRI_MAX) nice = PRI_MAX;	1004	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1515	next_pri = nice + PRI_BIAS;	1005	next_pri = nice;
1516		1006
1517	void	1007	void
1518	flush ()	1008	flush ()
1519	PROTOTYPE:	1009	PROTOTYPE:
1520	CODE:	1010	CODE:
1521	while (nreqs)	1011	while (eio_nreqs ())
1522	{	1012	{
1523	poll_wait ();	1013	poll_wait ();
1524	poll_cb (0);	1014	poll_cb ();
1525	}	1015	}
1526		1016
1527	void	1017	int
1528	poll()	1018	poll()
1529	PROTOTYPE:	1019	PROTOTYPE:
1530	CODE:	1020	CODE:
1531	if (nreqs)
1532	{
1533	poll_wait ();	1021	poll_wait ();
1534	poll_cb (0);	1022	RETVAL = poll_cb ();
1535	}	1023	OUTPUT:
		1024	RETVAL
1536		1025
1537	int	1026	int
1538	poll_fileno()	1027	poll_fileno()
1539	PROTOTYPE:	1028	PROTOTYPE:
1540	CODE:	1029	CODE:
…		…
1544		1033
1545	int	1034	int
1546	poll_cb(...)	1035	poll_cb(...)
1547	PROTOTYPE:	1036	PROTOTYPE:
1548	CODE:	1037	CODE:
1549	RETVAL = poll_cb (0);	1038	RETVAL = poll_cb ();
1550	OUTPUT:	1039	OUTPUT:
1551	RETVAL	1040	RETVAL
1552		1041
1553	int
1554	poll_some(int max = 0)
1555	PROTOTYPE: $
1556	CODE:
1557	RETVAL = poll_cb (max);
1558	OUTPUT:
1559	RETVAL
1560
1561	void	1042	void
1562	poll_wait()	1043	poll_wait()
1563	PROTOTYPE:	1044	PROTOTYPE:
1564	CODE:	1045	CODE:
1565	if (nreqs)
1566	poll_wait ();	1046	poll_wait ();
1567		1047
1568	int	1048	int
1569	nreqs()	1049	nreqs()
1570	PROTOTYPE:	1050	PROTOTYPE:
1571	CODE:	1051	CODE:
1572	RETVAL = nreqs;	1052	RETVAL = eio_nreqs ();
1573	OUTPUT:	1053	OUTPUT:
1574	RETVAL	1054	RETVAL
1575		1055
1576	int	1056	int
1577	nready()	1057	nready()
1578	PROTOTYPE:	1058	PROTOTYPE:
1579	CODE:	1059	CODE:
1580	RETVAL = get_nready ();	1060	RETVAL = eio_nready ();
1581	OUTPUT:	1061	OUTPUT:
1582	RETVAL	1062	RETVAL
1583		1063
1584	int	1064	int
1585	npending()	1065	npending()
1586	PROTOTYPE:	1066	PROTOTYPE:
1587	CODE:	1067	CODE:
1588	RETVAL = get_npending ();	1068	RETVAL = eio_npending ();
1589	OUTPUT:	1069	OUTPUT:
1590	RETVAL	1070	RETVAL
1591		1071
		1072	int
		1073	nthreads()
		1074	PROTOTYPE:
		1075	CODE:
		1076	RETVAL = eio_nthreads ();
		1077	OUTPUT:
		1078	RETVAL
		1079
		1080	void _on_next_submit (SV *cb)
		1081	CODE:
		1082	SvREFCNT_dec (on_next_submit);
		1083	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1084
1592	PROTOTYPES: DISABLE	1085	PROTOTYPES: DISABLE
1593		1086
1594	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1087	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1595		1088
1596	void	1089	void
1597	cancel (aio_req_ornot req)	1090	cancel (aio_req_ornot req)
1598	CODE:	1091	CODE:
1599	req_cancel (req);	1092	eio_cancel (req);
1600		1093
1601	void	1094	void
1602	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1095	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1603	CODE:	1096	PPCODE:
		1097	{
		1098	if (GIMME_V != G_VOID)
		1099	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1100
		1101	if (items > 1)
		1102	{
		1103	SV *cb_cv = get_cb (callback);
		1104
1604	SvREFCNT_dec (req->callback);	1105	SvREFCNT_dec (req->callback);
1605	req->callback = newSVsv (callback);	1106	req->callback = SvREFCNT_inc (cb_cv);
		1107	}
		1108	}
1606		1109
1607	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1110	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1608		1111
1609	void	1112	void
1610	add (aio_req grp, ...)	1113	add (aio_req grp, ...)
1611	PPCODE:	1114	PPCODE:
1612	{	1115	{
1613	int i;	1116	int i;
1614	aio_req req;
1615		1117
1616	if (grp->fd == 2)	1118	if (grp->int1 == 2)
1617	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1119	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1618		1120
1619	for (i = 1; i < items; ++i )	1121	for (i = 1; i < items; ++i )
1620	{	1122	{
		1123	aio_req req;
		1124
1621	if (GIMME_V != G_VOID)	1125	if (GIMME_V != G_VOID)
1622	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1126	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1623		1127
1624	req = SvAIO_REQ (ST (i));	1128	req = SvAIO_REQ (ST (i));
1625		1129
1626	if (req)	1130	if (req)
1627	{	1131	eio_grp_add (grp, req);
1628	++grp->length;
1629	req->grp = grp;
1630
1631	req->grp_prev = 0;
1632	req->grp_next = grp->grp_first;
1633
1634	if (grp->grp_first)
1635	grp->grp_first->grp_prev = req;
1636
1637	grp->grp_first = req;
1638	}
1639	}	1132	}
1640	}	1133	}
1641		1134
1642	void	1135	void
1643	cancel_subs (aio_req_ornot req)	1136	cancel_subs (aio_req_ornot req)
…		…
1656	av = newAV ();	1149	av = newAV ();
1657		1150
1658	for (i = 1; i < items; ++i )	1151	for (i = 1; i < items; ++i )
1659	av_push (av, newSVsv (ST (i)));	1152	av_push (av, newSVsv (ST (i)));
1660		1153
1661	SvREFCNT_dec (grp->data);	1154	SvREFCNT_dec (grp->sv1);
1662	grp->data = (SV *)av;	1155	grp->sv1 = (SV *)av;
1663	}	1156	}
1664		1157
1665	void	1158	void
1666	errno (aio_req grp, int errorno = errno)	1159	errno (aio_req grp, int errorno = errno)
1667	CODE:	1160	CODE:
1668	grp->errorno = errorno;	1161	grp->errorno = errorno;
1669		1162
1670	void	1163	void
1671	limit (aio_req grp, int limit)	1164	limit (aio_req grp, int limit)
1672	CODE:	1165	CODE:
1673	grp->fd2 = limit;	1166	eio_grp_limit (grp, limit);
1674	aio_grp_feed (grp);
1675		1167
1676	void	1168	void
1677	feed (aio_req grp, SV *callback=&PL_sv_undef)	1169	feed (aio_req grp, SV *callback=&PL_sv_undef)
1678	CODE:	1170	CODE:
1679	{	1171	{
1680	SvREFCNT_dec (grp->fh2);	1172	SvREFCNT_dec (grp->sv2);
1681	grp->fh2 = newSVsv (callback);	1173	grp->sv2 = newSVsv (callback);
		1174	grp->feed = aio_grp_feed;
1682		1175
1683	if (grp->fd2 <= 0)	1176	if (grp->int2 <= 0)
1684	grp->fd2 = 2;	1177	grp->int2 = 2;
1685		1178
1686	aio_grp_feed (grp);	1179	eio_grp_limit (grp, grp->int2);
1687	}	1180	}
1688		1181

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