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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.76 by root, Thu Oct 26 12:38:04 2006 UTC vs.
Revision 1.115 by root, Sat May 10 18:06:41 2008 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
32		17
33	#if HAVE_SENDFILE	18	#ifdef _WIN32
34	# if __linux	19
35	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
36	# elif __freebsd	21	# undef malloc
37	# include <sys/socket.h>	22	# undef free
38	# include <sys/uio.h>	23
39	# elif __hpux	24	// perl overrides all those nice win32 functions
40	# include <sys/socket.h>	25	# undef open
41	# elif __solaris /* not yet */	26	# undef read
42	# include <sys/sendfile.h>	27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
43	# else	56	#else
44	# error sendfile support requested but not available	57
45	# endif	58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	# define EIO_STRUCT_DIRENT struct dirent
		64
46	#endif	65	#endif
47		66
48	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
49	#ifndef NAME_MAX	68
50	# define NAME_MAX 4096	69	/* use NV for 32 bit perls as it allows larger offsets */
		70	#if IVSIZE >= 8
		71	# define SvVAL64 SvIV
		72	#else
		73	# define SvVAL64 SvNV
51	#endif	74	#endif
52		75
53	#ifndef PTHREAD_STACK_MIN	76	static HV *stash;
54	/* care for broken platforms, e.g. windows */	77	typedef SV SV8; /* byte-sv, used for argument-checking */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* buffer size for various temporary buffers */
67	#define AIO_BUFSIZE 65536
68
69	#define dBUF \
70	char *aio_buf; \
71	LOCK (wrklock); \
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
73	UNLOCK (wrklock); \
74	if (!aio_buf) \
75	return -1;
76
77	enum {
78	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
81	REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
83	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
85	REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,
87	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,
89	};
90		78
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
92	#define AIO_GRP_KLASS "IO::AIO::GRP"	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
93		81
94	typedef struct aio_cb	82	#define EIO_COMMON \
95	{
96	struct aio_cb *volatile next;
97
98	SV *data, *callback;	83	SV *callback; \
99	SV *fh, *fh2;	84	SV *sv1, *sv2; \
100	void *dataptr, *data2ptr;
101	Stat_t *statdata;
102	off_t offset;
103	size_t length;
104	ssize_t result;
105
106	STRLEN dataoffset;	85	STRLEN stroffset; \
107	int type;	86	SV *self
108	int fd, fd2;
109	int errorno;
110	mode_t mode; /* open */
111		87
112	unsigned char flags;	88	#include "libeio/eio.h"
113	unsigned char pri;
114		89
115	SV *self; /* the perl counterpart of this request, if any */	90	static int req_invoke (eio_req *req);
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	91	#define EIO_FINISH(req) req_invoke (req)
117	} aio_cb;	92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
118		96
119	enum {	97	enum {
120	FLAG_CANCELLED = 0x01,	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
121	};	99	};
122		100
		101	#include "libeio/eio.c"
		102
123	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
124	typedef aio_cb *aio_req_ornot;	104	typedef eio_req *aio_req_ornot;
125		105
126	enum {	106	static unsigned int max_outstanding = 0x7fffffff;
127	PRI_MIN = -4,
128	PRI_MAX = 4,
129		107
130	DEFAULT_PRI = 0,
131	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};
134
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
136		109
137	static int started, wanted;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
138	static volatile int nreqs;
139	static int respipe [2];
140		111
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149
150	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
152
153	typedef struct worker {
154	/* locked by wrklock */
155	struct worker *prev, *next;
156
157	pthread_t tid;
158
159	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */
161	void *dbuf;
162	DIR *dirp;
163	} worker;
164
165	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
166
167	static void worker_clear (worker *wrk)
168	{
169	if (wrk->dirp)
170	{
171	closedir (wrk->dirp);
172	wrk->dirp = 0;
173	}
174
175	if (wrk->dbuf)
176	{
177	free (wrk->dbuf);
178	wrk->dbuf = 0;
179	}
180	}
181
182	static void worker_free (worker *wrk)
183	{
184	wrk->next->prev = wrk->prev;
185	wrk->prev->next = wrk->next;
186
187	free (wrk);
188	}
189
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
193
194	/*
195	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.
198	*/
199	typedef struct {
200	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
201	int size;
202	} reqq;
203
204	static reqq req_queue;
205	static reqq res_queue;
206
207	int reqq_push (reqq *q, aio_req req)
208	{
209	int pri = req->pri;
210	req->next = 0;
211
212	if (q->qe[pri])
213	{
214	q->qe[pri]->next = req;
215	q->qe[pri] = req;
216	}
217	else
218	q->qe[pri] = q->qs[pri] = req;
219
220	return q->size++;
221	}
222
223	aio_req reqq_shift (reqq *q)
224	{
225	int pri;
226
227	if (!q->size)
228	return 0;
229
230	--q->size;
231
232	for (pri = NUM_PRI; pri--; )
233	{
234	aio_req req = q->qs[pri];
235
236	if (req)
237	{
238	if (!(q->qs[pri] = req->next))
239	q->qe[pri] = 0;
240
241	return req;
242	}
243	}
244
245	abort ();
246	}
247
248	static int poll_cb (int max);
249	static void req_invoke (aio_req req);
250	static void req_free (aio_req req);	112	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	113	static void req_cancel (aio_req req);
		114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
252		128
253	/* must be called at most once */	129	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	130	static SV *req_sv (aio_req req, const char *klass)
255	{	131	{
256	if (!req->self)	132	if (!req->self)
…		…
274	return mg ? (aio_req)mg->mg_ptr : 0;	150	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	151	}
276		152
277	static void aio_grp_feed (aio_req grp)	153	static void aio_grp_feed (aio_req grp)
278	{	154	{
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	155	if (grp->sv2 && SvOK (grp->sv2))
280	{	156	{
281	int old_len = grp->length;
282
283	if (grp->fh2 && SvOK (grp->fh2))
284	{
285	dSP;	157	dSP;
286		158
287	ENTER;	159	ENTER;
288	SAVETMPS;	160	SAVETMPS;
289	PUSHMARK (SP);	161	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
291	PUTBACK;	163	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	165	SPAGAIN;
294	FREETMPS;	166	FREETMPS;
295	LEAVE;	167	LEAVE;
296	}
297
298	/* stop if no progress has been made */
299	if (old_len == grp->length)
300	{
301	SvREFCNT_dec (grp->fh2);
302	grp->fh2 = 0;
303	break;
304	}
305	}	168	}
306	}	169	}
307		170
308	static void aio_grp_dec (aio_req grp)	171	static int req_invoke (eio_req *req)
309	{	172	{
310	--grp->length;	173	dSP;
311		174
312	/* call feeder, if applicable */	175	if (req->flags & FLAG_SV2_RO_OFF)
313	aio_grp_feed (grp);	176	SvREADONLY_off (req->sv2);
314		177
315	/* finish, if done */	178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
316	if (!grp->length && grp->fd)
317	{	179	{
318	req_invoke (grp);
319	req_free (grp);
320	}
321	}
322
323	static void poll_wait ()
324	{
325	fd_set rfd;
326
327	while (nreqs)
328	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)
349	{
350	dSP;
351
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353	{
354	errno = req->errorno;
355
356	ENTER;	180	ENTER;
357	SAVETMPS;	181	SAVETMPS;
358	PUSHMARK (SP);	182	PUSHMARK (SP);
359	EXTEND (SP, 1);	183	EXTEND (SP, 1);
360		184
361	switch (req->type)	185	switch (req->type)
362	{	186	{
363	case REQ_READDIR:	187	case EIO_READDIR:
364	{	188	{
365	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
366		190
367	if (req->result >= 0)	191	if (req->result >= 0)
368	{	192	{
369	int i;	193	int i;
370	char *buf = req->data2ptr;	194	char *buf = req->ptr2;
371	AV *av = newAV ();	195	AV *av = newAV ();
372		196
373	av_extend (av, req->result - 1);	197	av_extend (av, req->result - 1);
374		198
375	for (i = 0; i < req->result; ++i)	199	for (i = 0; i < req->result; ++i)
…		…
385		209
386	PUSHs (rv);	210	PUSHs (rv);
387	}	211	}
388	break;	212	break;
389		213
390	case REQ_OPEN:	214	case EIO_OPEN:
391	{	215	{
392	/* convert fd to fh */	216	/* convert fd to fh */
393	SV *fh;	217	SV *fh = &PL_sv_undef;
394		218
395	PUSHs (sv_2mortal (newSViv (req->result)));	219	if (req->result >= 0)
396	PUTBACK;	220	{
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	221	GV *gv = (GV *)sv_newmortal ();
398	SPAGAIN;	222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
399		228
400	fh = SvREFCNT_inc (POPs);	229	symlen = snprintf (
		230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
		235	);
401		236
		237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		238	fh = (SV *)gv;
		239	}
		240
402	PUSHMARK (SP);	241	PUSHs (fh);
403	XPUSHs (sv_2mortal (fh));
404	}	242	}
405	break;	243	break;
406		244
407	case REQ_GROUP:	245	case EIO_GROUP:
408	req->fd = 2; /* mark group as finished */	246	req->int1 = 2; /* mark group as finished */
409		247
410	if (req->data)	248	if (req->sv1)
411	{	249	{
412	int i;	250	int i;
413	AV *av = (AV *)req->data;	251	AV *av = (AV *)req->sv1;
414		252
415	EXTEND (SP, AvFILL (av) + 1);	253	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	254	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	255	PUSHs (*av_fetch (av, i, 0));
418	}	256	}
419	break;	257	break;
420		258
421	case REQ_NOP:	259	case EIO_NOP:
422	case REQ_BUSY:	260	case EIO_BUSY:
423	break;	261	break;
		262
		263	case EIO_READLINK:
		264	if (req->result > 0)
		265	{
		266	SvCUR_set (req->sv2, req->result);
		267	*SvEND (req->sv2) = 0;
		268	PUSHs (req->sv2);
		269	}
		270	break;
		271
		272	case EIO_STAT:
		273	case EIO_LSTAT:
		274	case EIO_FSTAT:
		275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		276	PL_laststatval = req->result;
		277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		278	PUSHs (sv_2mortal (newSViv (req->result)));
		279	break;
		280
		281	case EIO_READ:
		282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		283	*SvEND (req->sv2) = 0;
		284	PUSHs (sv_2mortal (newSViv (req->result)));
		285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
424		291
425	default:	292	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	293	PUSHs (sv_2mortal (newSViv (req->result)));
427	break;	294	break;
428	}	295	}
429		296
		297	errno = req->errorno;
430		298
431	PUTBACK;	299	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
433	SPAGAIN;	301	SPAGAIN;
434		302
435	FREETMPS;	303	FREETMPS;
436	LEAVE;	304	LEAVE;
		305
		306	PUTBACK;
437	}	307	}
438		308
439	if (req->grp)	309	return !!SvTRUE (ERRSV);
440	{
441	aio_req grp = req->grp;
442
443	/* unlink request */
444	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
445	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
446
447	if (grp->grp_first == req)
448	grp->grp_first = req->grp_next;
449
450	aio_grp_dec (grp);
451	}
452
453	if (SvTRUE (ERRSV))
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	310	}
459		311
460	static void req_free (aio_req req)	312	static void req_destroy (aio_req req)
461	{	313	{
462	if (req->self)	314	if (req->self)
463	{	315	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	316	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	317	SvREFCNT_dec (req->self);
466	}	318	}
467		319
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	320	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	321	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	322	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473
474	if (req->type == REQ_READDIR)
475	free (req->data2ptr);
476		323
477	Safefree (req);	324	Safefree (req);
478	}	325	}
479		326
480	static void req_cancel_subs (aio_req grp)	327	static void req_cancel_subs (aio_req grp)
481	{	328	{
482	aio_req sub;	329	aio_req sub;
483		330
484	if (grp->type != REQ_GROUP)	331	if (grp->type != EIO_GROUP)
485	return;	332	return;
486		333
487	SvREFCNT_dec (grp->fh2);	334	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	335	grp->sv2 = 0;
489		336
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	337	eio_grp_cancel (grp);
491	req_cancel (sub);
492	}	338	}
493		339
494	static void req_cancel (aio_req req)	340	#ifdef USE_SOCKETS_AS_HANDLES
495	{	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
496	req->flags |= FLAG_CANCELLED;	342	#else
		343	# define TO_SOCKET(x) (x)
		344	#endif
497		345
498	req_cancel_subs (req);	346	static void
499	}	347	create_respipe (void)
500
501	static int poll_cb (int max)
502	{	348	{
503	dSP;	349	int old_readfd = respipe [0];
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507		350
508	while (max <= 0 || count < max)	351	if (respipe [1] >= 0)
		352	respipe_close (TO_SOCKET (respipe [1]));
		353
		354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
		358	#endif
		359	croak ("unable to initialize result pipe");
		360
		361	if (old_readfd >= 0)
509	{	362	{
510	LOCK (reslock);	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
511	req = reqq_shift (&res_queue);	364	croak ("unable to initialize result pipe(2)");
512		365
513	if (req)	366	respipe_close (respipe [0]);
514	{	367	respipe [0] = old_readfd;
515	if (!res_queue.size)
516	{
517	/* read any signals sent by the worker threads */
518	char buf [32];
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}
522	}
523
524	UNLOCK (reslock);
525
526	if (!req)
527	break;
528
529	--nreqs;
530
531	if (req->type == REQ_QUIT)
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{
535	req->fd = 1; /* mark request as delayed */
536	continue;
537	}
538	else
539	{
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}	368	}
560		369
561	return count;	370	#ifdef _WIN32
562	}	371	int arg = 1;
		372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		374	#else
		375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		377	#endif
		378	croak ("unable to initialize result pipe(3)");
563		379
564	static void *aio_proc(void *arg);	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
		381	respipe_osf [1] = TO_SOCKET (respipe [1]);
		382	}
565		383
566	static void start_thread (void)	384	static void poll_wait (void)
567	{	385	{
568	sigset_t fullsigset, oldsigset;	386	fd_set rfd;
569	pthread_attr_t attr;
570		387
571	worker *wrk = calloc (1, sizeof (worker));	388	while (eio_nreqs ())
572
573	if (!wrk)
574	croak ("unable to allocate worker thread data");
575
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
586	{	389	{
587	wrk->prev = &wrk_first;	390	int size;
588	wrk->next = wrk_first.next;	391
589	wrk_first.next->prev = wrk;	392	X_LOCK (reslock);
590	wrk_first.next = wrk;	393	size = res_queue.size;
591	started++;	394	X_UNLOCK (reslock);
		395
		396	if (size)
		397	return;
		398
		399	maybe_start_thread ();
		400
		401	FD_ZERO (&rfd);
		402	FD_SET (respipe [0], &rfd);
		403
		404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
592	}	405	}
593	else
594	free (wrk);
595
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);
598	}	406	}
599		407
600	static void req_send (aio_req req)	408	static int poll_cb (void)
601	{	409	{
602	while (started < wanted && nreqs >= started)	410	int res = eio_poll ();
603	start_thread ();
604		411
605	++nreqs;	412	if (res > 0)
606		413	croak (0);
607	LOCK (reqlock);
608	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);
610	UNLOCK (reqlock);
611	}
612
613	static void end_thread (void)
614	{
615	aio_req req;
616
617	Newz (0, req, 1, aio_cb);
618
619	req->type = REQ_QUIT;
620	req->pri = PRI_MAX + PRI_BIAS;
621
622	req_send (req);
623	}
624
625	static void min_parallel (int nthreads)
626	{
627	if (wanted < nthreads)
628	wanted = nthreads;
629	}
630
631	static void max_parallel (int nthreads)
632	{
633	int cur = started;
634
635	if (wanted > nthreads)
636	wanted = nthreads;
637
638	while (cur > wanted)
639	{
640	end_thread ();
641	cur--;
642	}
643
644	while (started > wanted)
645	{
646	poll_wait ();
647	poll_cb (0);
648	}
649	}
650
651	static void create_pipe ()
652	{
653	if (pipe (respipe))
654	croak ("unable to initialize result pipe");
655
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
657	croak ("cannot set result pipe to nonblocking mode");
658
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
660	croak ("cannot set result pipe to nonblocking mode");
661	}
662
663	/*****************************************************************************/
664	/* work around various missing functions */
665
666	#if !HAVE_PREADWRITE
667	# define pread aio_pread
668	# define pwrite aio_pwrite
669
670	/*
671	* make our pread/pwrite safe against themselves, but not against
672	* normal read/write by using a mutex. slows down execution a lot,
673	* but that's your problem, not mine.
674	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
676
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
678	{
679	ssize_t res;
680	off_t ooffset;
681
682	LOCK (preadwritelock);
683	ooffset = lseek (fd, 0, SEEK_CUR);
684	lseek (fd, offset, SEEK_SET);
685	res = read (fd, buf, count);
686	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);
688		414
689	return res;	415	return res;
690	}
691
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
693	{
694	ssize_t res;
695	off_t ooffset;
696
697	LOCK (preadwritelock);
698	ooffset = lseek (fd, 0, SEEK_CUR);
699	lseek (fd, offset, SEEK_SET);
700	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);
703
704	return res;
705	}
706	#endif
707
708	#if !HAVE_FDATASYNC
709	# define fdatasync fsync
710	#endif
711
712	#if !HAVE_READAHEAD
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
714
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
716	{
717	dBUF;
718
719	while (count > 0)
720	{
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
722
723	pread (fd, aio_buf, len, offset);
724	offset += len;
725	count -= len;
726	}
727
728	errno = 0;
729	}
730
731	#endif
732
733	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r
735
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
737
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
739	{
740	struct dirent *e;
741	int errorno;
742
743	LOCK (readdirlock);
744
745	e = readdir (dirp);
746	errorno = errno;
747
748	if (e)
749	{
750	*res = ent;
751	strcpy (ent->d_name, e->d_name);
752	}
753	else
754	*res = 0;
755
756	UNLOCK (readdirlock);
757
758	errno = errorno;
759	return e ? 0 : -1;
760	}
761	#endif
762
763	/* sendfile always needs emulation */
764	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
765	{
766	ssize_t res;
767
768	if (!count)
769	return 0;
770
771	#if HAVE_SENDFILE
772	# if __linux
773	res = sendfile (ofd, ifd, &offset, count);
774
775	# elif __freebsd
776	/*
777	* Of course, the freebsd sendfile is a dire hack with no thoughts
778	* wasted on making it similar to other I/O functions.
779	*/
780	{
781	off_t sbytes;
782	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
783
784	if (res < 0 && sbytes)
785	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
786	res = sbytes;
787	}
788
789	# elif __hpux
790	res = sendfile (ofd, ifd, offset, count, 0, 0);
791
792	# elif __solaris
793	{
794	struct sendfilevec vec;
795	size_t sbytes;
796
797	vec.sfv_fd = ifd;
798	vec.sfv_flag = 0;
799	vec.sfv_off = offset;
800	vec.sfv_len = count;
801
802	res = sendfilev (ofd, &vec, 1, &sbytes);
803
804	if (res < 0 && sbytes)
805	res = sbytes;
806	}
807
808	# endif
809	#else
810	res = -1;
811	errno = ENOSYS;
812	#endif
813
814	if (res < 0
815	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
816	#if __solaris
817	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
818	#endif
819	)
820	)
821	{
822	/* emulate sendfile. this is a major pain in the ass */
823	dBUF;
824
825	res = 0;
826
827	while (count)
828	{
829	ssize_t cnt;
830
831	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
832
833	if (cnt <= 0)
834	{
835	if (cnt && !res) res = -1;
836	break;
837	}
838
839	cnt = write (ofd, aio_buf, cnt);
840
841	if (cnt <= 0)
842	{
843	if (cnt && !res) res = -1;
844	break;
845	}
846
847	offset += cnt;
848	res += cnt;
849	count -= cnt;
850	}
851	}
852
853	return res;
854	}
855
856	/* read a full directory */
857	static void scandir_ (aio_req req, worker *self)
858	{
859	DIR *dirp;
860	union
861	{
862	struct dirent d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
864	} *u;
865	struct dirent *entp;
866	char *name, *names;
867	int memlen = 4096;
868	int memofs = 0;
869	int res = 0;
870	int errorno;
871
872	LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);
874	self->dbuf = u = malloc (sizeof (*u));
875	req->data2ptr = names = malloc (memlen);
876	UNLOCK (wrklock);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916
917	/*****************************************************************************/
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}	416	}
1069		417
1070	#define dREQ \	418	#define dREQ \
1071	aio_req req; \	419	aio_req req; \
1072	int req_pri = next_pri; \	420	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
1074	\	422	\
1075	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
1076	croak ("callback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
1077	\	425	\
1078	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
1079	if (!req) \	427	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
1081	\	429	\
1082	req->callback = newSVsv (callback); \	430	req->callback = newSVsv (callback); \
1083	req->pri = req_pri	431	req->pri = req_pri
1084		432
1085	#define REQ_SEND \	433	#define REQ_SEND \
1086	req_send (req); \	434	eio_submit (req); \
1087	\	435	\
1088	if (GIMME_V != G_VOID) \	436	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090		438
1091	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
1092		440
1093	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
1094		442
1095	BOOT:	443	BOOT:
1096	{	444	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	445	stash = gv_stashpv ("IO::AIO", 1);
		446
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		452	#ifdef _WIN32
		453	X_MUTEX_CHECK (wrklock);
		454	X_MUTEX_CHECK (reslock);
		455	X_MUTEX_CHECK (reqlock);
		456	X_MUTEX_CHECK (reqwait);
		457	X_MUTEX_CHECK (preadwritelock);
		458	X_MUTEX_CHECK (readdirlock);
1101		459
1102	create_pipe ();	460	X_COND_CHECK (reqwait);
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	461	#else
1104	}	462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		463	#endif
1105		464
		465	create_respipe ();
		466
		467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
		469	}
		470
1106	void	471	void
1107	min_parallel (nthreads)	472	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	473	PROTOTYPE: $
		474	CODE:
		475	eio_set_max_poll_reqs (nreqs);
1110		476
1111	void	477	void
1112	max_parallel (nthreads)	478	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	479	PROTOTYPE: $
		480	CODE:
		481	eio_set_max_poll_time (nseconds);
1115		482
1116	void	483	void
		484	min_parallel (int nthreads)
		485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
		488
		489	void
		490	max_parallel (int nthreads)
		491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
		494
		495	void
		496	max_idle (int nthreads)
		497	PROTOTYPE: $
		498	CODE:
		499	eio_set_max_idle (nthreads);
		500
		501	void
		502	max_outstanding (int maxreqs)
		503	PROTOTYPE: $
		504	CODE:
		505	max_outstanding = maxreqs;
		506
		507	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
1123	PPCODE:	510	PPCODE:
1124	{	511	{
1125	dREQ;	512	dREQ;
1126		513
1127	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	517	req->int1 = flags;
1131	req->mode = mode;	518	req->int2 = mode;
1132		519
1133	REQ_SEND;	520	REQ_SEND;
1134	}	521	}
1135		522
1136	void	523	void
1137	aio_close (fh,callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	525	PROTOTYPE: $;$
1141	ALIAS:	526	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	529	PPCODE:
1146	{	530	{
1147	dREQ;	531	dREQ;
1148		532
1149	req->type = ix;	533	req->type = ix;
1150	req->fh = newSVsv (fh);	534	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	535	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152		536
1153	REQ_SEND (req);	537	REQ_SEND (req);
1154	}	538	}
1155		539
1156	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	570	ALIAS:
1165	aio_read = REQ_READ	571	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
1168	PPCODE:	574	PPCODE:
1169	{	575	{
1170	aio_req req;
1171	STRLEN svlen;	576	STRLEN svlen;
1172	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
		578	UV len = SvUV (length);
1173		579
1174	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);	581	SvPOK_on (data);
1176		582
1177	if (dataoffset < 0)	583	if (dataoffset < 0)
1178	dataoffset += svlen;	584	dataoffset += svlen;
1179		585
1180	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	587	croak ("dataoffset outside of data scalar");
1182		588
1183	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
1184	{	590	{
1185	/* write: check length and adjust. */	591	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	593	len = svlen - dataoffset;
1188	}	594	}
1189	else	595	else
1190	{	596	{
1191	/* read: grow scalar as necessary */	597	/* read: grow scalar as necessary */
1192	svptr = SvGROW (data, length + dataoffset);	598	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	599	}
1194		600
1195	if (length < 0)	601	if (len < 0)
1196	croak ("length must not be negative");	602	croak ("length must not be negative");
1197		603
1198	{	604	{
1199	dREQ;	605	dREQ;
1200		606
1201	req->type = ix;	607	req->type = ix;
1202	req->fh = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1204	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
		611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	612	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
		615	req->stroffset = dataoffset;
1209		616
1210	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
1211	{	618	{
1212	SvREADONLY_on (data);	619	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	620	req->flags |= FLAG_SV2_RO_OFF;
1214	}	621	}
1215		622
1216	REQ_SEND;	623	REQ_SEND;
1217	}	624	}
1218	}	625	}
1219		626
1220	void	627	void
		628	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		629	PROTOTYPE: $$;$
		630	PPCODE:
		631	{
		632	SV *data;
		633	dREQ;
		634
		635	data = newSV (NAME_MAX);
		636	SvPOK_on (data);
		637
		638	req->type = EIO_READLINK;
		639	req->sv1 = newSVsv (path);
		640	req->ptr1 = SvPVbyte_nolen (req->sv1);
		641	req->sv2 = data;
		642	req->ptr2 = SvPVbyte_nolen (data);
		643
		644	REQ_SEND;
		645	}
		646
		647	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	648	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
1228	PPCODE:	650	PPCODE:
1229	{	651	{
1230	dREQ;	652	dREQ;
1231		653
1232	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235	req->fh2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237	req->offset = in_offset;	659	req->offs = SvVAL64 (in_offset);
1238	req->length = length;	660	req->size = length;
1239		661
1240	REQ_SEND;	662	REQ_SEND;
1241	}	663	}
1242		664
1243	void	665	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	666	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
1250	PPCODE:	668	PPCODE:
1251	{	669	{
1252	dREQ;	670	dREQ;
1253		671
1254	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1257	req->offset = offset;	675	req->offs = SvVAL64 (offset);
1258	req->length = length;	676	req->size = length;
1259		677
1260	REQ_SEND;	678	REQ_SEND;
1261	}	679	}
1262		680
1263	void	681	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	683	ALIAS:
1268	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
1270	PPCODE:	686	PPCODE:
1271	{	687	{
1272	dREQ;	688	dREQ;
1273		689
1274	New (0, req->statdata, 1, Stat_t);	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
1275	if (!req->statdata)	691	if (!req->ptr2)
1276	{	692	{
1277	req_free (req);	693	req_destroy (req);
1278	croak ("out of memory during aio_req->statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
1279	}	695	}
		696
		697	req->flags |= EIO_FLAG_PTR2_FREE;
		698	req->sv1 = newSVsv (fh_or_path);
1280		699
1281	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
1282	{	701	{
1283	req->type = ix;	702	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	704	}
1287	else	705	else
1288	{	706	{
1289	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	709	}
1293		710
1294	REQ_SEND;	711	REQ_SEND;
1295	}	712	}
1296		713
1297	void	714	void
		715	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		716	PPCODE:
		717	{
		718	dREQ;
		719
		720	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		722	req->sv1 = newSVsv (fh_or_path);
		723
		724	if (SvPOK (fh_or_path))
		725	{
		726	req->type = EIO_UTIME;
		727	req->ptr1 = SvPVbyte_nolen (req->sv1);
		728	}
		729	else
		730	{
		731	req->type = EIO_FUTIME;
		732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		733	}
		734
		735	REQ_SEND;
		736	}
		737
		738	void
		739	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		740	PPCODE:
		741	{
		742	dREQ;
		743
		744	req->sv1 = newSVsv (fh_or_path);
		745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		746
		747	if (SvPOK (fh_or_path))
		748	{
		749	req->type = EIO_TRUNCATE;
		750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		751	}
		752	else
		753	{
		754	req->type = EIO_FTRUNCATE;
		755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		756	}
		757
		758	REQ_SEND;
		759	}
		760
		761	void
		762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
		767	PPCODE:
		768	{
		769	dREQ;
		770
		771	req->type = ix;
		772	req->int2 = mode;
		773	req->sv1 = newSVsv (fh_or_path);
		774
		775	if (ix == EIO_FCHMOD)
		776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		777	else
		778	req->ptr1 = SvPVbyte_nolen (req->sv1);
		779
		780	REQ_SEND;
		781	}
		782
		783	void
		784	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		785	PPCODE:
		786	{
		787	dREQ;
		788
		789	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		791	req->sv1 = newSVsv (fh_or_path);
		792
		793	if (SvPOK (fh_or_path))
		794	{
		795	req->type = EIO_CHOWN;
		796	req->ptr1 = SvPVbyte_nolen (req->sv1);
		797	}
		798	else
		799	{
		800	req->type = EIO_FCHOWN;
		801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		802	}
		803
		804	REQ_SEND;
		805	}
		806
		807	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	809	ALIAS:
1302	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	812	aio_readdir = EIO_READDIR
1305	PPCODE:	813	PPCODE:
1306	{	814	{
1307	dREQ;	815	dREQ;
1308		816
1309	req->type = ix;	817	req->type = ix;
1310	req->data = newSVsv (pathname);	818	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
		825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
		830	PPCODE:
		831	{
		832	dREQ;
		833
		834	req->type = ix;
		835	req->sv1 = newSVsv (oldpath);
		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
		837	req->sv2 = newSVsv (newpath);
		838	req->ptr2 = SvPVbyte_nolen (req->sv2);
1312		839
1313	REQ_SEND;	840	REQ_SEND;
1314	}	841	}
1315		842
1316	void	843	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:
1322	aio_link = REQ_LINK
1323	aio_symlink = REQ_SYMLINK
1324	aio_rename = REQ_RENAME
1325	PPCODE:	845	PPCODE:
1326	{	846	{
1327	dREQ;	847	dREQ;
1328		848
1329	req->type = ix;	849	req->type = EIO_MKNOD;
1330	req->fh = newSVsv (oldpath);	850	req->sv1 = newSVsv (pathname);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	852	req->int2 = (mode_t)mode;
1333	req->dataptr = SvPVbyte_nolen (req->data);	853	req->offs = dev;
1334		854
1335	REQ_SEND;	855	REQ_SEND;
1336	}	856	}
1337		857
1338	void	858	void
1339	aio_busy (delay,callback=&PL_sv_undef)	859	aio_busy (double delay, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	860	PPCODE:
1343	{	861	{
1344	dREQ;	862	dREQ;
1345		863
1346	req->type = REQ_BUSY;	864	req->type = EIO_BUSY;
1347	req->fd = delay < 0. ? 0 : delay;	865	req->nv1 = delay < 0. ? 0. : delay;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1349		866
1350	REQ_SEND;	867	REQ_SEND;
1351	}	868	}
1352		869
1353	void	870	void
1354	aio_group (callback=&PL_sv_undef)	871	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	872	PROTOTYPE: ;$
1357	PPCODE:	873	PPCODE:
1358	{	874	{
1359	dREQ;	875	dREQ;
1360		876
1361	req->type = REQ_GROUP;	877	req->type = EIO_GROUP;
		878
1362	req_send (req);	879	eio_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	881	}
1366		882
1367	void	883	void
1368	aio_nop (callback=&PL_sv_undef)	884	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
1370	PPCODE:	888	PPCODE:
1371	{	889	{
1372	dREQ;	890	dREQ;
1373		891
1374	req->type = REQ_NOP;	892	req->type = ix;
1375		893
1376	REQ_SEND;	894	REQ_SEND;
1377	}	895	}
1378		896
1379	void	897	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	898	aioreq_pri (int pri = 0)
1381	CODE:	899	PROTOTYPE: ;$
		900	CODE:
		901	RETVAL = next_pri - EIO_PRI_BIAS;
		902	if (items > 0)
		903	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	906	next_pri = pri + EIO_PRI_BIAS;
		907	}
		908	OUTPUT:
		909	RETVAL
1385		910
1386	void	911	void
1387	aioreq_nice (int nice = 0)	912	aioreq_nice (int nice = 0)
1388	CODE:	913	CODE:
1389	nice = next_pri - nice;	914	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	917	next_pri = nice + EIO_PRI_BIAS;
1393		918
1394	void	919	void
1395	flush ()	920	flush ()
1396	PROTOTYPE:	921	PROTOTYPE:
1397	CODE:	922	CODE:
1398	while (nreqs)	923	while (nreqs)
1399	{	924	{
1400	poll_wait ();	925	poll_wait ();
1401	poll_cb (0);	926	poll_cb ();
1402	}	927	}
1403		928
1404	void	929	int
1405	poll()	930	poll()
1406	PROTOTYPE:	931	PROTOTYPE:
1407	CODE:	932	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	933	poll_wait ();
1411	poll_cb (0);	934	RETVAL = poll_cb ();
1412	}	935	OUTPUT:
		936	RETVAL
1413		937
1414	int	938	int
1415	poll_fileno()	939	poll_fileno()
1416	PROTOTYPE:	940	PROTOTYPE:
1417	CODE:	941	CODE:
…		…
1421		945
1422	int	946	int
1423	poll_cb(...)	947	poll_cb(...)
1424	PROTOTYPE:	948	PROTOTYPE:
1425	CODE:	949	CODE:
1426	RETVAL = poll_cb (0);	950	RETVAL = poll_cb ();
1427	OUTPUT:	951	OUTPUT:
1428	RETVAL	952	RETVAL
1429		953
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:
1436	RETVAL
1437
1438	void	954	void
1439	poll_wait()	955	poll_wait()
1440	PROTOTYPE:	956	PROTOTYPE:
1441	CODE:	957	CODE:
1442	if (nreqs)
1443	poll_wait ();	958	poll_wait ();
1444		959
1445	int	960	int
1446	nreqs()	961	nreqs()
1447	PROTOTYPE:	962	PROTOTYPE:
1448	CODE:	963	CODE:
1449	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1450	OUTPUT:	965	OUTPUT:
1451	RETVAL	966	RETVAL
1452		967
		968	int
		969	nready()
		970	PROTOTYPE:
		971	CODE:
		972	RETVAL = eio_nready ();
		973	OUTPUT:
		974	RETVAL
		975
		976	int
		977	npending()
		978	PROTOTYPE:
		979	CODE:
		980	RETVAL = eio_npending ();
		981	OUTPUT:
		982	RETVAL
		983
		984	int
		985	nthreads()
		986	PROTOTYPE:
		987	CODE:
		988	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		989	RETVAL = started;
		990	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		991	OUTPUT:
		992	RETVAL
		993
1453	PROTOTYPES: DISABLE	994	PROTOTYPES: DISABLE
1454		995
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		997
1457	void	998	void
1458	cancel (aio_req_ornot req)	999	cancel (aio_req_ornot req)
1459	CODE:	1000	CODE:
1460	req_cancel (req);	1001	eio_cancel (req);
1461		1002
1462	void	1003	void
1463	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1464	CODE:	1005	CODE:
1465	SvREFCNT_dec (req->callback);	1006	SvREFCNT_dec (req->callback);
…		…
1470	void	1011	void
1471	add (aio_req grp, ...)	1012	add (aio_req grp, ...)
1472	PPCODE:	1013	PPCODE:
1473	{	1014	{
1474	int i;	1015	int i;
1475	aio_req req;
1476		1016
1477	if (grp->fd == 2)	1017	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1019
1480	for (i = 1; i < items; ++i )	1020	for (i = 1; i < items; ++i )
1481	{	1021	{
		1022	aio_req req;
		1023
1482	if (GIMME_V != G_VOID)	1024	if (GIMME_V != G_VOID)
1483	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1484		1026
1485	req = SvAIO_REQ (ST (i));	1027	req = SvAIO_REQ (ST (i));
1486		1028
1487	if (req)	1029	if (req)
1488	{	1030	eio_grp_add (grp, req);
1489	++grp->length;
1490	req->grp = grp;
1491
1492	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;
1494
1495	if (grp->grp_first)
1496	grp->grp_first->grp_prev = req;
1497
1498	grp->grp_first = req;
1499	}
1500	}	1031	}
1501	}	1032	}
1502		1033
1503	void	1034	void
1504	cancel_subs (aio_req_ornot req)	1035	cancel_subs (aio_req_ornot req)
…		…
1508	void	1039	void
1509	result (aio_req grp, ...)	1040	result (aio_req grp, ...)
1510	CODE:	1041	CODE:
1511	{	1042	{
1512	int i;	1043	int i;
		1044	AV *av;
		1045
		1046	grp->errorno = errno;
		1047
1513	AV *av = newAV ();	1048	av = newAV ();
1514		1049
1515	for (i = 1; i < items; ++i )	1050	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	1051	av_push (av, newSVsv (ST (i)));
1517		1052
1518	SvREFCNT_dec (grp->data);	1053	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	1054	grp->sv1 = (SV *)av;
1520	}	1055	}
		1056
		1057	void
		1058	errno (aio_req grp, int errorno = errno)
		1059	CODE:
		1060	grp->errorno = errorno;
1521		1061
1522	void	1062	void
1523	limit (aio_req grp, int limit)	1063	limit (aio_req grp, int limit)
1524	CODE:	1064	CODE:
1525	grp->fd2 = limit;	1065	eio_grp_limit (grp, limit);
1526	aio_grp_feed (grp);
1527		1066
1528	void	1067	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	1069	CODE:
1531	{	1070	{
1532	SvREFCNT_dec (grp->fh2);	1071	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	1072	grp->sv2 = newSVsv (callback);
1534		1073
1535	if (grp->fd2 <= 0)	1074	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	1075	grp->int2 = 2;
1537		1076
1538	aio_grp_feed (grp);	1077	eio_grp_limit (grp, grp->int2);
1539	}	1078	}
1540		1079

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