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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.73 by root, Tue Oct 24 21:26:30 2006 UTC vs.
Revision 1.148 by root, Wed Jun 17 01:14:48 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"
17
18	#include <pthread.h>
19
20	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
21	#include <errno.h>	11	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	12	#include <sys/types.h>
25	#include <sys/stat.h>	13	#include <sys/stat.h>
26	#include <limits.h>	14	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	15	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	16	#include <sched.h>
31		17
32	#if HAVE_SENDFILE	18	/* perl namespace pollution */
33	# if __linux	19	#undef VERSION
34	# include <sys/sendfile.h>	20
35	# elif __freebsd	21	#ifdef _WIN32
36	# include <sys/socket.h>	22
37	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
38	# elif __hpux	24	# undef malloc
39	# include <sys/socket.h>	25	# undef free
40	# elif __solaris /* not yet */	26
41	# 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
42	# else	59	#else
43	# error sendfile support requested but not available	60
44	# 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
45	#endif	68	#endif
46		69
47	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
48	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
49	# 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 VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
50	#endif	87	#endif
51		88
52	#if __ia64	89	/*****************************************************************************/
53	# define STACKSIZE 65536	90
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	91	#if __GNUC__ >= 3
55	# define STACKSIZE PTHREAD_STACK_MIN	92	# define expect(expr,value) __builtin_expect ((expr),(value))
56	#else	93	#else
57	# define STACKSIZE 16384	94	# define expect(expr,value) (expr)
58	#endif	95	#endif
59		96
60	/* buffer size for various temporary buffers */	97	#define expect_false(expr) expect ((expr) != 0, 0)
61	#define AIO_BUFSIZE 65536	98	#define expect_true(expr) expect ((expr) != 0, 1)
62		99
63	#define dBUF \	100	/*****************************************************************************/
64	char *aio_buf; \
65	LOCK (wrklock); \
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \
68	if (!aio_buf) \
69	return -1;
70		101
71	enum {	102	static HV *stash;
72	REQ_QUIT,	103	typedef SV SV8; /* byte-sv, used for argument-checking */
73	REQ_OPEN, REQ_CLOSE,	104	typedef int aio_rfd; /* read file desriptor */
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,	105	typedef int aio_wfd; /* write file descriptor */
75	REQ_SENDFILE,
76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
79	REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		106
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		109
88	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
89	{
90	struct aio_cb *volatile next;
91
92	SV *data, *callback;	111	SV *callback; \
93	SV *fh, *fh2;	112	SV *sv1, *sv2; \
94	void *dataptr, *data2ptr;
95	Stat_t *statdata;
96	off_t offset;
97	size_t length;
98	ssize_t result;
99
100	STRLEN dataoffset;	113	STRLEN stroffset; \
101	int type;	114	SV *self;
102	int fd, fd2;
103	int errorno;
104	mode_t mode; /* open */
105		115
106	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
107	unsigned char pri;
108		117
109	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
111	} aio_cb;	120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	#endif
		123
		124	#ifndef POSIX_FADV_SEQUENTIAL
		125	# define POSIX_FADV_SEQUENTIAL 0
		126	#endif
		127
		128	#ifndef POSIX_FADV_RANDOM
		129	# define POSIX_FADV_RANDOM 0
		130	#endif
		131
		132	#ifndef POSIX_FADV_NOREUSE
		133	# define POSIX_FADV_NOREUSE 0
		134	#endif
		135
		136	#ifndef POSIX_FADV_WILLNEED
		137	# define POSIX_FADV_WILLNEED 0
		138	#endif
		139
		140	#ifndef POSIX_FADV_DONTNEED
		141	# define POSIX_FADV_DONTNEED 0
		142	#endif
		143
		144	static int req_invoke (eio_req *req);
		145	#define EIO_FINISH(req) req_invoke (req)
		146	static void req_destroy (eio_req *grp);
		147	#define EIO_DESTROY(req) req_destroy (req)
112		148
113	enum {	149	enum {
114	FLAG_CANCELLED = 0x01,	150	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
115	};	151	};
116		152
		153	#include "libeio/eio.c"
		154
117	typedef aio_cb *aio_req;	155	typedef eio_req *aio_req;
118	typedef aio_cb *aio_req_ornot;	156	typedef eio_req *aio_req_ornot;
119		157
120	enum {	158	static SV *on_next_submit;
121	PRI_MIN = -4,	159	static int next_pri = EIO_PRI_DEFAULT;
122	PRI_MAX = 4,
123
124	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};
128
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130
131	static int started, wanted;
132	static volatile int nreqs;
133	static int max_outstanding = 1<<30;	160	static int max_outstanding;
134	static int respipe [2];
135		161
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	162	static int respipe_osf [2], respipe [2] = { -1, -1 };
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141		163
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
147
148	typedef struct worker {
149	/* locked by wrklock */
150	struct worker *prev, *next;
151
152	pthread_t tid;
153
154	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */
156	void *dbuf;
157	DIR *dirp;
158	} worker;
159
160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
161
162	static void worker_clear (worker *wrk)
163	{
164	if (wrk->dirp)
165	{
166	closedir (wrk->dirp);
167	wrk->dirp = 0;
168	}
169
170	if (wrk->dbuf)
171	{
172	free (wrk->dbuf);
173	wrk->dbuf = 0;
174	}
175	}
176
177	static void worker_free (worker *wrk)
178	{
179	wrk->next->prev = wrk->prev;
180	wrk->prev->next = wrk->next;
181
182	free (wrk);
183	}
184
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
188
189	/*
190	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.
193	*/
194	typedef struct {
195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
196	int size;
197	} reqq;
198
199	static reqq req_queue;
200	static reqq res_queue;
201
202	int reqq_push (reqq *q, aio_req req)
203	{
204	int pri = req->pri;
205	req->next = 0;
206
207	if (q->qe[pri])
208	{
209	q->qe[pri]->next = req;
210	q->qe[pri] = req;
211	}
212	else
213	q->qe[pri] = q->qs[pri] = req;
214
215	return q->size++;
216	}
217
218	aio_req reqq_shift (reqq *q)
219	{
220	int pri;
221
222	if (!q->size)
223	return 0;
224
225	--q->size;
226
227	for (pri = NUM_PRI; pri--; )
228	{
229	aio_req req = q->qs[pri];
230
231	if (req)
232	{
233	if (!(q->qs[pri] = req->next))
234	q->qe[pri] = 0;
235
236	return req;
237	}
238	}
239
240	abort ();
241	}
242
243	static void req_invoke (aio_req req);
244	static void req_free (aio_req req);	164	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	165	static void req_cancel (aio_req req);
		166
		167	static void want_poll (void)
		168	{
		169	/* write a dummy byte to the pipe so fh becomes ready */
		170	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		171	}
		172
		173	static void done_poll (void)
		174	{
		175	/* read any signals sent by the worker threads */
		176	char buf [4];
		177	while (respipe_read (respipe [0], buf, 4) == 4)
		178	;
		179	}
246		180
247	/* must be called at most once */	181	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	182	static SV *req_sv (aio_req req, const char *klass)
249	{	183	{
250	if (!req->self)	184	if (!req->self)
…		…
268	return mg ? (aio_req)mg->mg_ptr : 0;	202	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	203	}
270		204
271	static void aio_grp_feed (aio_req grp)	205	static void aio_grp_feed (aio_req grp)
272	{	206	{
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	207	if (grp->sv2 && SvOK (grp->sv2))
274	{	208	{
275	int old_len = grp->length;
276
277	if (grp->fh2 && SvOK (grp->fh2))
278	{
279	dSP;	209	dSP;
280		210
281	ENTER;	211	ENTER;
282	SAVETMPS;	212	SAVETMPS;
283	PUSHMARK (SP);	213	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
285	PUTBACK;	215	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	216	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	217	SPAGAIN;
288	FREETMPS;	218	FREETMPS;
289	LEAVE;	219	LEAVE;
290	}
291
292	/* stop if no progress has been made */
293	if (old_len == grp->length)
294	{
295	SvREFCNT_dec (grp->fh2);
296	grp->fh2 = 0;
297	break;
298	}
299	}	220	}
300	}	221	}
301		222
302	static void aio_grp_dec (aio_req grp)	223	static void req_submit (eio_req *req)
303	{	224	{
304	--grp->length;	225	eio_submit (req);
305		226
306	/* call feeder, if applicable */	227	if (expect_false (on_next_submit))
307	aio_grp_feed (grp);
308
309	/* finish, if done */
310	if (!grp->length && grp->fd)
311	{	228	{
312	req_invoke (grp);	229	dSP;
313	req_free (grp);	230	SV *cb = sv_2mortal (on_next_submit);
		231
		232	on_next_submit = 0;
		233
		234	PUSHMARK (SP);
		235	PUTBACK;
		236	call_sv (cb, G_DISCARD | G_EVAL);
314	}	237	}
315	}	238	}
316		239
317	static void poll_wait ()	240	static int req_invoke (eio_req *req)
318	{	241	{
319	fd_set rfd;	242	dSP;
320		243
321	while (nreqs)	244	if (req->flags & FLAG_SV2_RO_OFF)
		245	SvREADONLY_off (req->sv2);
		246
		247	if (!EIO_CANCELLED (req) && req->callback)
322	{	248	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)
343	{
344	dSP;
345
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347	{
348	errno = req->errorno;
349
350	ENTER;	249	ENTER;
351	SAVETMPS;	250	SAVETMPS;
352	PUSHMARK (SP);	251	PUSHMARK (SP);
353	EXTEND (SP, 1);	252	EXTEND (SP, 1);
354		253
355	switch (req->type)	254	switch (req->type)
356	{	255	{
357	case REQ_READDIR:	256	case EIO_READDIR:
358	{	257	{
359	SV *rv = &PL_sv_undef;	258	SV *rv = &PL_sv_undef;
360		259
361	if (req->result >= 0)	260	if (req->result >= 0)
362	{	261	{
363	int i;	262	int i;
364	char *buf = req->data2ptr;	263	char *names = (char *)req->ptr2;
		264	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
365	AV *av = newAV ();	265	AV *av = newAV ();
366		266
367	av_extend (av, req->result - 1);	267	av_extend (av, req->result - 1);
368		268
369	for (i = 0; i < req->result; ++i)	269	for (i = 0; i < req->result; ++i)
370	{	270	{
371	SV *sv = newSVpv (buf, 0);	271	if (req->int1 & EIO_READDIR_DENTS)
		272	{
		273	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
372		274
		275	if (req->int1 & EIO_READDIR_CUSTOM2)
		276	{
		277	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		278	AV *avent = newAV ();
		279
		280	av_extend (avent, 2);
		281
		282	if (!sv_type [ent->type])
		283	{
		284	sv_type [ent->type] = newSViv (ent->type);
		285	SvREADONLY_on (sv_type [ent->type]);
		286	}
		287
		288	av_store (avent, 0, namesv);
		289	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		290	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		291
		292	av_store (av, i, newRV_noinc ((SV *)avent));
		293	}
		294	else
373	av_store (av, i, sv);	295	av_store (av, i, namesv);
		296
		297	++ent;
		298	}
		299	else
		300	{
		301	SV *name = newSVpv (names, 0);
		302	av_store (av, i, name);
374	buf += SvCUR (sv) + 1;	303	names += SvCUR (name) + 1;
		304	}
375	}	305	}
376		306
377	rv = sv_2mortal (newRV_noinc ((SV *)av));	307	rv = sv_2mortal (newRV_noinc ((SV *)av));
378	}	308	}
379		309
380	PUSHs (rv);	310	PUSHs (rv);
		311
		312	if (req->int1 & EIO_READDIR_CUSTOM1)
		313	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
381	}	314	}
382	break;	315	break;
383		316
384	case REQ_OPEN:	317	case EIO_OPEN:
385	{	318	{
386	/* convert fd to fh */	319	/* convert fd to fh */
387	SV *fh;	320	SV *fh = &PL_sv_undef;
388		321
389	PUSHs (sv_2mortal (newSViv (req->result)));	322	if (req->result >= 0)
390	PUTBACK;	323	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	324	GV *gv = (GV *)sv_newmortal ();
392	SPAGAIN;	325	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		326	char sym [64];
		327	int symlen;
		328
		329	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		330	gv_init (gv, stash, sym, symlen, 0);
393		331
394	fh = SvREFCNT_inc (POPs);	332	symlen = snprintf (
		333	sym,
		334	sizeof (sym),
		335	"%s&=%d",
		336	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		337	(int)req->result
		338	);
395		339
		340	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		341	fh = (SV *)gv;
		342	}
		343
396	PUSHMARK (SP);	344	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	345	}
399	break;	346	break;
400		347
401	case REQ_GROUP:	348	case EIO_GROUP:
402	req->fd = 2; /* mark group as finished */	349	req->int1 = 2; /* mark group as finished */
403		350
404	if (req->data)	351	if (req->sv1)
405	{	352	{
406	int i;	353	int i;
407	AV *av = (AV *)req->data;	354	AV *av = (AV *)req->sv1;
408		355
409	EXTEND (SP, AvFILL (av) + 1);	356	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	357	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	358	PUSHs (*av_fetch (av, i, 0));
412	}	359	}
413	break;	360	break;
414		361
415	case REQ_NOP:	362	case EIO_NOP:
416	case REQ_BUSY:	363	case EIO_BUSY:
417	break;	364	break;
		365
		366	case EIO_READLINK:
		367	if (req->result > 0)
		368	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		369	break;
		370
		371	case EIO_STAT:
		372	case EIO_LSTAT:
		373	case EIO_FSTAT:
		374	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		375	PL_laststatval = req->result;
		376	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		377	PUSHs (sv_2mortal (newSViv (req->result)));
		378	break;
		379
		380	case EIO_READ:
		381	{
		382	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		383	*SvEND (req->sv2) = 0;
		384	SvPOK_only (req->sv2);
		385	SvSETMAGIC (req->sv2);
		386	PUSHs (sv_2mortal (newSViv (req->result)));
		387	}
		388	break;
		389
		390	case EIO_DUP2:
		391	if (req->result > 0)
		392	req->result = 0;
		393	/* FALLTHROUGH */
418		394
419	default:	395	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	396	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	397	break;
422	}	398	}
423		399
		400	errno = req->errorno;
424		401
425	PUTBACK;	402	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	403	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	404	SPAGAIN;
428		405
429	FREETMPS;	406	FREETMPS;
430	LEAVE;	407	LEAVE;
		408
		409	PUTBACK;
431	}	410	}
432		411
433	if (req->grp)	412	return !!SvTRUE (ERRSV);
434	{
435	aio_req grp = req->grp;
436
437	/* unlink request */
438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
440
441	if (grp->grp_first == req)
442	grp->grp_first = req->grp_next;
443
444	aio_grp_dec (grp);
445	}
446
447	if (SvTRUE (ERRSV))
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	413	}
453		414
454	static void req_free (aio_req req)	415	static void req_destroy (aio_req req)
455	{	416	{
456	if (req->self)	417	if (req->self)
457	{	418	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	419	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	420	SvREFCNT_dec (req->self);
460	}	421	}
461		422
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	423	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	424	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	425	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467
468	if (req->type == REQ_READDIR)
469	free (req->data2ptr);
470		426
471	Safefree (req);	427	Safefree (req);
472	}	428	}
473		429
474	static void req_cancel_subs (aio_req grp)	430	static void req_cancel_subs (aio_req grp)
475	{	431	{
476	aio_req sub;	432	aio_req sub;
477		433
478	if (grp->type != REQ_GROUP)	434	if (grp->type != EIO_GROUP)
479	return;	435	return;
480		436
481	SvREFCNT_dec (grp->fh2);	437	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	438	grp->sv2 = 0;
483		439
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	440	eio_grp_cancel (grp);
485	req_cancel (sub);
486	}	441	}
487		442
488	static void req_cancel (aio_req req)	443	#ifdef USE_SOCKETS_AS_HANDLES
489	{	444	# define TO_SOCKET(x) (win32_get_osfhandle (x))
490	req->flags |= FLAG_CANCELLED;	445	#else
		446	# define TO_SOCKET(x) (x)
		447	#endif
491		448
492	req_cancel_subs (req);	449	static void
493	}	450	create_respipe (void)
		451	{
		452	int old_readfd = respipe [0];
494		453
		454	if (respipe [1] >= 0)
		455	respipe_close (TO_SOCKET (respipe [1]));
		456
		457	#ifdef _WIN32
		458	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		459	#else
		460	if (pipe (respipe))
		461	#endif
		462	croak ("unable to initialize result pipe");
		463
		464	if (old_readfd >= 0)
		465	{
		466	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		467	croak ("unable to initialize result pipe(2)");
		468
		469	respipe_close (respipe [0]);
		470	respipe [0] = old_readfd;
		471	}
		472
		473	#ifdef _WIN32
		474	int arg = 1;
		475	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		476	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		477	#else
		478	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		479	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		480	#endif
		481	croak ("unable to initialize result pipe(3)");
		482
		483	respipe_osf [0] = TO_SOCKET (respipe [0]);
		484	respipe_osf [1] = TO_SOCKET (respipe [1]);
		485	}
		486
		487	static void poll_wait (void)
		488	{
		489	fd_set rfd;
		490
		491	while (eio_nreqs ())
		492	{
		493	int size;
		494
		495	X_LOCK (reslock);
		496	size = res_queue.size;
		497	X_UNLOCK (reslock);
		498
		499	if (size)
		500	return;
		501
		502	etp_maybe_start_thread ();
		503
		504	FD_ZERO (&rfd);
		505	FD_SET (respipe [0], &rfd);
		506
		507	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		508	}
		509	}
		510
495	static int poll_cb ()	511	static int poll_cb (void)
496	{	512	{
497	dSP;
498	int count = 0;
499	int do_croak = 0;
500	aio_req req;
501
502	for (;;)	513	for (;;)
503	{	514	{
504	LOCK (reslock);	515	int res = eio_poll ();
505	req = reqq_shift (&res_queue);
506		516
507	if (req)	517	if (res > 0)
508	{
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;	518	croak (0);
522		519
523	--nreqs;	520	if (!max_outstanding || max_outstanding > eio_nreqs ())
		521	return res;
524		522
525	if (req->type == REQ_QUIT)	523	poll_wait ();
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	524	}
554
555	return count;
556	}	525	}
557		526
558	static void *aio_proc(void *arg);
559
560	static void start_thread (void)	527	static void atfork_child (void)
561	{	528	{
562	sigset_t fullsigset, oldsigset;	529	create_respipe ();
563	pthread_attr_t attr;
564
565	worker *wrk = calloc (1, sizeof (worker));
566
567	if (!wrk)
568	croak ("unable to allocate worker thread data");
569
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
580	{
581	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;
585	started++;
586	}
587	else
588	free (wrk);
589
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);
592	}	530	}
593		531
594	static void req_send (aio_req req)	532	static SV *
		533	get_cb (SV *cb_sv)
595	{	534	{
596	while (started < wanted && nreqs >= started)	535	HV *st;
597	start_thread ();	536	GV *gvp;
		537	CV *cv;
598		538
599	++nreqs;	539	if (!SvOK (cb_sv))
600
601	LOCK (reqlock);
602	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);
604	UNLOCK (reqlock);
605
606	if (nreqs > max_outstanding)
607	for (;;)
608	{
609	poll_cb ();
610
611	if (nreqs <= max_outstanding)
612	break;
613
614	poll_wait ();
615	}
616	}
617
618	static void end_thread (void)
619	{
620	aio_req req;
621
622	Newz (0, req, 1, aio_cb);
623
624	req->type = REQ_QUIT;
625	req->pri = PRI_MAX + PRI_BIAS;
626
627	req_send (req);
628	}
629
630	static void min_parallel (int nthreads)
631	{
632	if (wanted < nthreads)
633	wanted = nthreads;
634	}
635
636	static void max_parallel (int nthreads)
637	{
638	int cur = started;
639
640	if (wanted > nthreads)
641	wanted = nthreads;
642
643	while (cur > wanted)
644	{
645	end_thread ();
646	cur--;
647	}
648
649	while (started > wanted)
650	{
651	poll_wait ();
652	poll_cb ();
653	}
654	}
655
656	static void create_pipe ()
657	{
658	if (pipe (respipe))
659	croak ("unable to initialize result pipe");
660
661	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
662	croak ("cannot set result pipe to nonblocking mode");
663
664	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
665	croak ("cannot set result pipe to nonblocking mode");
666	}
667
668	/*****************************************************************************/
669	/* work around various missing functions */
670
671	#if !HAVE_PREADWRITE
672	# define pread aio_pread
673	# define pwrite aio_pwrite
674
675	/*
676	* make our pread/pwrite safe against themselves, but not against
677	* normal read/write by using a mutex. slows down execution a lot,
678	* but that's your problem, not mine.
679	*/
680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
681
682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
683	{
684	ssize_t res;
685	off_t ooffset;
686
687	LOCK (preadwritelock);
688	ooffset = lseek (fd, 0, SEEK_CUR);
689	lseek (fd, offset, SEEK_SET);
690	res = read (fd, buf, count);
691	lseek (fd, ooffset, SEEK_SET);
692	UNLOCK (preadwritelock);
693
694	return res;
695	}
696
697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
698	{
699	ssize_t res;
700	off_t ooffset;
701
702	LOCK (preadwritelock);
703	ooffset = lseek (fd, 0, SEEK_CUR);
704	lseek (fd, offset, SEEK_SET);
705	res = write (fd, buf, count);
706	lseek (fd, offset, SEEK_SET);
707	UNLOCK (preadwritelock);
708
709	return res;
710	}
711	#endif
712
713	#if !HAVE_FDATASYNC
714	# define fdatasync fsync
715	#endif
716
717	#if !HAVE_READAHEAD
718	# define readahead aio_readahead
719
720	static ssize_t readahead (int fd, off_t offset, size_t count)
721	{
722	dBUF;
723
724	while (count > 0)
725	{
726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
727
728	pread (fd, aio_buf, len, offset);
729	offset += len;
730	count -= len;
731	}
732
733	errno = 0;
734	}
735	#endif
736
737	#if !HAVE_READDIR_R
738	# define readdir_r aio_readdir_r
739
740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
741
742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
743	{
744	struct dirent *e;
745	int errorno;
746
747	LOCK (readdirlock);
748
749	e = readdir (dirp);
750	errorno = errno;
751
752	if (e)
753	{
754	*res = ent;
755	strcpy (ent->d_name, e->d_name);
756	}
757	else
758	*res = 0;
759
760	UNLOCK (readdirlock);
761
762	errno = errorno;
763	return e ? 0 : -1;
764	}
765	#endif
766
767	/* sendfile always needs emulation */
768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
769	{
770	ssize_t res;
771
772	if (!count)
773	return 0;	540	return 0;
774		541
775	#if HAVE_SENDFILE	542	cv = sv_2cv (cb_sv, &st, &gvp, 0);
776	# if __linux
777	res = sendfile (ofd, ifd, &offset, count);
778		543
779	# elif __freebsd	544	if (!cv)
780	/*	545	croak ("IO::AIO callback must be undef or a CODE reference");
781	* Of course, the freebsd sendfile is a dire hack with no thoughts
782	* wasted on making it similar to other I/O functions.
783	*/
784	{
785	off_t sbytes;
786	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
787		546
788	if (res < 0 && sbytes)	547	return (SV *)cv;
789	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
790	res = sbytes;
791	}
792
793	# elif __hpux
794	res = sendfile (ofd, ifd, offset, count, 0, 0);
795
796	# elif __solaris
797	{
798	struct sendfilevec vec;
799	size_t sbytes;
800
801	vec.sfv_fd = ifd;
802	vec.sfv_flag = 0;
803	vec.sfv_off = offset;
804	vec.sfv_len = count;
805
806	res = sendfilev (ofd, &vec, 1, &sbytes);
807
808	if (res < 0 && sbytes)
809	res = sbytes;
810	}
811
812	# endif
813	#else
814	res = -1;
815	errno = ENOSYS;
816	#endif
817
818	if (res < 0
819	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
820	#if __solaris
821	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
822	#endif
823	)
824	)
825	{
826	/* emulate sendfile. this is a major pain in the ass */
827	dBUF;
828
829	res = 0;
830
831	while (count)
832	{
833	ssize_t cnt;
834
835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
836
837	if (cnt <= 0)
838	{
839	if (cnt && !res) res = -1;
840	break;
841	}
842
843	cnt = write (ofd, aio_buf, cnt);
844
845	if (cnt <= 0)
846	{
847	if (cnt && !res) res = -1;
848	break;
849	}
850
851	offset += cnt;
852	res += cnt;
853	count -= cnt;
854	}
855	}
856
857	return res;
858	}
859
860	/* read a full directory */
861	static void scandir_ (aio_req req, worker *self)
862	{
863	DIR *dirp;
864	union
865	{
866	struct dirent d;
867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
868	} *u;
869	struct dirent *entp;
870	char *name, *names;
871	int memlen = 4096;
872	int memofs = 0;
873	int res = 0;
874	int errorno;
875
876	LOCK (wrklock);
877	self->dirp = dirp = opendir (req->dataptr);
878	self->dbuf = u = malloc (sizeof (*u));
879	UNLOCK (wrklock);
880
881	req->data2ptr = names = malloc (memlen);
882
883	if (dirp && u && names)
884	for (;;)
885	{
886	errno = 0;
887	readdir_r (dirp, &u->d, &entp);
888
889	if (!entp)
890	break;
891
892	name = entp->d_name;
893
894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
895	{
896	int len = strlen (name) + 1;
897
898	res++;
899
900	while (memofs + len > memlen)
901	{
902	memlen *= 2;
903	LOCK (wrklock);
904	req->data2ptr = names = realloc (names, memlen);
905	UNLOCK (wrklock);
906
907	if (!names)
908	break;
909	}
910
911	memcpy (names + memofs, name, len);
912	memofs += len;
913	}
914	}
915
916	if (errno)
917	res = -1;
918
919	req->result = res;
920	}
921
922	/*****************************************************************************/
923
924	static void *aio_proc (void *thr_arg)
925	{
926	aio_req req;
927	int type;
928	worker *self = (worker *)thr_arg;
929
930	do
931	{
932	LOCK (reqlock);
933
934	for (;;)
935	{
936	self->req = req = reqq_shift (&req_queue);
937
938	if (req)
939	break;
940
941	pthread_cond_wait (&reqwait, &reqlock);
942	}
943
944	UNLOCK (reqlock);
945
946	errno = 0; /* strictly unnecessary */
947	type = req->type; /* remember type for QUIT check */
948
949	if (!(req->flags & FLAG_CANCELLED))
950	switch (type)
951	{
952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
954
955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
957
958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
961
962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
963	case REQ_CLOSE: req->result = close (req->fd); break;
964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
969
970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
971	case REQ_FSYNC: req->result = fsync (req->fd); break;
972	case REQ_READDIR: scandir_ (req, self); break;
973
974	case REQ_BUSY:
975	{
976	struct timeval tv;
977
978	tv.tv_sec = req->fd;
979	tv.tv_usec = req->fd2;
980
981	req->result = select (0, 0, 0, 0, &tv);
982	}
983
984	case REQ_GROUP:
985	case REQ_NOP:
986	case REQ_QUIT:
987	break;
988
989	default:
990	req->result = ENOSYS;
991	break;
992	}
993
994	req->errorno = errno;
995
996	LOCK (reslock);
997
998	if (!reqq_push (&res_queue, req))
999	/* write a dummy byte to the pipe so fh becomes ready */
1000	write (respipe [1], &respipe, 1);
1001
1002	self->req = 0;
1003	worker_clear (self);
1004
1005	UNLOCK (reslock);
1006	}
1007	while (type != REQ_QUIT);
1008
1009	LOCK (wrklock);
1010	worker_free (self);
1011	UNLOCK (wrklock);
1012
1013	return 0;
1014	}
1015
1016	/*****************************************************************************/
1017
1018	static void atfork_prepare (void)
1019	{
1020	LOCK (wrklock);
1021	LOCK (reqlock);
1022	LOCK (reslock);
1023	#if !HAVE_PREADWRITE
1024	LOCK (preadwritelock);
1025	#endif
1026	#if !HAVE_READDIR_R
1027	LOCK (readdirlock);
1028	#endif
1029	}
1030
1031	static void atfork_parent (void)
1032	{
1033	#if !HAVE_READDIR_R
1034	UNLOCK (readdirlock);
1035	#endif
1036	#if !HAVE_PREADWRITE
1037	UNLOCK (preadwritelock);
1038	#endif
1039	UNLOCK (reslock);
1040	UNLOCK (reqlock);
1041	UNLOCK (wrklock);
1042	}
1043
1044	static void atfork_child (void)
1045	{
1046	aio_req prv;
1047
1048	while (prv = reqq_shift (&req_queue))
1049	req_free (prv);
1050
1051	while (prv = reqq_shift (&res_queue))
1052	req_free (prv);
1053
1054	while (wrk_first.next != &wrk_first)
1055	{
1056	worker *wrk = wrk_first.next;
1057
1058	if (wrk->req)
1059	req_free (wrk->req);
1060
1061	worker_clear (wrk);
1062	worker_free (wrk);
1063	}
1064
1065	started = 0;
1066	nreqs = 0;
1067
1068	close (respipe [0]);
1069	close (respipe [1]);
1070	create_pipe ();
1071
1072	atfork_parent ();
1073	}	548	}
1074		549
1075	#define dREQ \	550	#define dREQ \
		551	SV *cb_cv; \
1076	aio_req req; \	552	aio_req req; \
1077	int req_pri = next_pri; \	553	int req_pri = next_pri; \
1078	next_pri = DEFAULT_PRI + PRI_BIAS; \	554	next_pri = EIO_PRI_DEFAULT; \
1079	\	555	\
1080	if (SvOK (callback) && !SvROK (callback)) \	556	cb_cv = get_cb (callback); \
1081	croak ("callback must be undef or of reference type"); \
1082	\	557	\
1083	Newz (0, req, 1, aio_cb); \	558	Newz (0, req, 1, eio_req); \
1084	if (!req) \	559	if (!req) \
1085	croak ("out of memory during aio_req allocation"); \	560	croak ("out of memory during eio_req allocation"); \
1086	\	561	\
1087	req->callback = newSVsv (callback); \	562	req->callback = SvREFCNT_inc (cb_cv); \
1088	req->pri = req_pri	563	req->pri = req_pri
1089		564
1090	#define REQ_SEND \	565	#define REQ_SEND \
		566	PUTBACK; \
1091	req_send (req); \	567	req_submit (req); \
		568	SPAGAIN; \
1092	\	569	\
1093	if (GIMME_V != G_VOID) \	570	if (GIMME_V != G_VOID) \
1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));	571	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1095		572
		573	static int
		574	extract_fd (SV *fh, int wr)
		575	{
		576	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		577
		578	if (fd < 0)
		579	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		580
		581	return fd;
		582	}
		583
1096	MODULE = IO::AIO PACKAGE = IO::AIO	584	MODULE = IO::AIO PACKAGE = IO::AIO
1097		585
1098	PROTOTYPES: ENABLE	586	PROTOTYPES: ENABLE
1099		587
1100	BOOT:	588	BOOT:
1101	{	589	{
		590	static const struct {
		591	const char *name;
		592	IV iv;
		593	} *civ, const_iv[] = {
		594	# define const_iv(name, value) { # name, (IV) value },
		595	# define const_eio(name) { # name, (IV) EIO_ ## name },
		596	const_iv (EXDEV , EXDEV)
		597	const_iv (ENOSYS , ENOSYS)
		598	const_iv (O_RDONLY, O_RDONLY)
		599	const_iv (O_WRONLY, O_WRONLY)
		600	const_iv (O_CREAT , O_CREAT)
		601	const_iv (O_TRUNC , O_TRUNC)
		602	#ifndef _WIN32
		603	const_iv (S_IFIFO , S_IFIFO)
		604	#endif
		605	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		606	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		607	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		608	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		609	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		610	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		611
		612	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		613	const_eio (SYNC_FILE_RANGE_WRITE)
		614	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		615
		616	const_eio (READDIR_DENTS)
		617	const_eio (READDIR_DIRS_FIRST)
		618	const_eio (READDIR_STAT_ORDER)
		619	const_eio (READDIR_FOUND_UNKNOWN)
		620
		621	const_eio (DT_UNKNOWN)
		622	const_eio (DT_FIFO)
		623	const_eio (DT_CHR)
		624	const_eio (DT_DIR)
		625	const_eio (DT_BLK)
		626	const_eio (DT_REG)
		627	const_eio (DT_LNK)
		628	const_eio (DT_SOCK)
		629	const_eio (DT_WHT)
		630	};
		631
1102	HV *stash = gv_stashpv ("IO::AIO", 1);	632	stash = gv_stashpv ("IO::AIO", 1);
1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1106		633
		634	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		635	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		636
1107	create_pipe ();	637	create_respipe ();
1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1109	}
1110		638
		639	if (eio_init (want_poll, done_poll) < 0)
		640	croak ("IO::AIO: unable to initialise eio library");
		641
		642	/* atfork child called in fifo order, so before eio's handler */
		643	X_THREAD_ATFORK (0, 0, atfork_child);
		644	}
		645
1111	void	646	void
1112	min_parallel (nthreads)	647	max_poll_reqs (int nreqs)
1113	int nthreads
1114	PROTOTYPE: $	648	PROTOTYPE: $
		649	CODE:
		650	eio_set_max_poll_reqs (nreqs);
1115		651
1116	void	652	void
1117	max_parallel (nthreads)	653	max_poll_time (double nseconds)
1118	int nthreads
1119	PROTOTYPE: $	654	PROTOTYPE: $
1120
1121	int
1122	max_outstanding (nreqs)
1123	int nreqs
1124	PROTOTYPE: $
1125	CODE:	655	CODE:
1126	RETVAL = max_outstanding;	656	eio_set_max_poll_time (nseconds);
		657
		658	void
		659	min_parallel (int nthreads)
		660	PROTOTYPE: $
		661	CODE:
		662	eio_set_min_parallel (nthreads);
		663
		664	void
		665	max_parallel (int nthreads)
		666	PROTOTYPE: $
		667	CODE:
		668	eio_set_max_parallel (nthreads);
		669
		670	void
		671	max_idle (int nthreads)
		672	PROTOTYPE: $
		673	CODE:
		674	eio_set_max_idle (nthreads);
		675
		676	void
		677	max_outstanding (int maxreqs)
		678	PROTOTYPE: $
		679	CODE:
1127	max_outstanding = nreqs;	680	max_outstanding = maxreqs;
1128		681
1129	void	682	void
1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	683	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1131	SV * pathname
1132	int flags
1133	int mode
1134	SV * callback
1135	PROTOTYPE: $$$;$	684	PROTOTYPE: $$$;$
1136	PPCODE:	685	PPCODE:
1137	{	686	{
1138	dREQ;	687	dREQ;
1139		688
1140	req->type = REQ_OPEN;	689	req->type = EIO_OPEN;
1141	req->data = newSVsv (pathname);	690	req->sv1 = newSVsv (pathname);
1142	req->dataptr = SvPVbyte_nolen (req->data);	691	req->ptr1 = SvPVbyte_nolen (req->sv1);
1143	req->fd = flags;	692	req->int1 = flags;
1144	req->mode = mode;	693	req->int2 = mode;
1145		694
1146	REQ_SEND;	695	REQ_SEND;
1147	}	696	}
1148		697
1149	void	698	void
1150	aio_close (fh,callback=&PL_sv_undef)	699	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1151	SV * fh
1152	SV * callback
1153	PROTOTYPE: $;$	700	PROTOTYPE: $;$
1154	ALIAS:	701	ALIAS:
1155	aio_close = REQ_CLOSE
1156	aio_fsync = REQ_FSYNC	702	aio_fsync = EIO_FSYNC
1157	aio_fdatasync = REQ_FDATASYNC	703	aio_fdatasync = EIO_FDATASYNC
1158	PPCODE:	704	PPCODE:
1159	{	705	{
		706	int fd = extract_fd (fh, 0);
1160	dREQ;	707	dREQ;
1161		708
1162	req->type = ix;	709	req->type = ix;
1163	req->fh = newSVsv (fh);	710	req->sv1 = newSVsv (fh);
1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	711	req->int1 = fd;
1165		712
1166	REQ_SEND (req);	713	REQ_SEND (req);
1167	}	714	}
1168		715
1169	void	716	void
		717	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		718	PROTOTYPE: $$$$;$
		719	PPCODE:
		720	{
		721	int fd = extract_fd (fh, 0);
		722	dREQ;
		723
		724	req->type = EIO_SYNC_FILE_RANGE;
		725	req->sv1 = newSVsv (fh);
		726	req->int1 = fd;
		727	req->offs = offset;
		728	req->size = nbytes;
		729	req->int2 = flags;
		730
		731	REQ_SEND (req);
		732	}
		733
		734	void
		735	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		736	PROTOTYPE: $;$
		737	PPCODE:
		738	{
		739	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		740	int fd = extract_fd (fh, 0);
		741	dREQ;
		742
		743	if (close_pipe < 0)
		744	{
		745	int pipefd [2];
		746
		747	if (pipe (pipefd) < 0
		748	|| close (pipefd [1]) < 0
		749	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		750	abort (); /*D*/
		751
		752	close_pipe = pipefd [0];
		753	}
		754
		755	req->type = EIO_DUP2;
		756	req->int1 = close_pipe;
		757	req->sv2 = newSVsv (fh);
		758	req->int2 = fd;
		759
		760	REQ_SEND (req);
		761	}
		762
		763	void
1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	764	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1171	SV * fh
1172	UV offset
1173	UV length
1174	SV * data
1175	UV dataoffset
1176	SV * callback
1177	ALIAS:	765	ALIAS:
1178	aio_read = REQ_READ	766	aio_read = EIO_READ
1179	aio_write = REQ_WRITE	767	aio_write = EIO_WRITE
1180	PROTOTYPE: $$$$$;$	768	PROTOTYPE: $$$$$;$
1181	PPCODE:	769	PPCODE:
1182	{	770	{
1183	aio_req req;
1184	STRLEN svlen;	771	STRLEN svlen;
		772	int fd = extract_fd (fh, ix == EIO_WRITE);
1185	char *svptr = SvPVbyte (data, svlen);	773	char *svptr = SvPVbyte (data, svlen);
1186		774	UV len = SvUV (length);
1187	SvUPGRADE (data, SVt_PV);
1188	SvPOK_on (data);
1189		775
1190	if (dataoffset < 0)	776	if (dataoffset < 0)
1191	dataoffset += svlen;	777	dataoffset += svlen;
1192		778
1193	if (dataoffset < 0 || dataoffset > svlen)	779	if (dataoffset < 0 || dataoffset > svlen)
1194	croak ("data offset outside of string");	780	croak ("dataoffset outside of data scalar");
1195		781
1196	if (ix == REQ_WRITE)	782	if (ix == EIO_WRITE)
1197	{	783	{
1198	/* write: check length and adjust. */	784	/* write: check length and adjust. */
1199	if (length < 0 || length + dataoffset > svlen)	785	if (!SvOK (length) || len + dataoffset > svlen)
1200	length = svlen - dataoffset;	786	len = svlen - dataoffset;
1201	}	787	}
1202	else	788	else
1203	{	789	{
1204	/* read: grow scalar as necessary */	790	/* read: check type and grow scalar as necessary */
		791	SvUPGRADE (data, SVt_PV);
1205	svptr = SvGROW (data, length + dataoffset);	792	svptr = SvGROW (data, len + dataoffset + 1);
1206	}	793	}
1207
1208	if (length < 0)
1209	croak ("length must not be negative");
1210		794
1211	{	795	{
1212	dREQ;	796	dREQ;
1213		797
1214	req->type = ix;	798	req->type = ix;
1215	req->fh = newSVsv (fh);	799	req->sv1 = newSVsv (fh);
1216	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	800	req->int1 = fd;
1217	: IoOFP (sv_2io (fh)));	801	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1218	req->offset = offset;	802	req->size = len;
1219	req->length = length;
1220	req->data = SvREFCNT_inc (data);	803	req->sv2 = SvREFCNT_inc (data);
1221	req->dataptr = (char *)svptr + dataoffset;	804	req->ptr2 = (char *)svptr + dataoffset;
		805	req->stroffset = dataoffset;
1222		806
1223	if (!SvREADONLY (data))	807	if (!SvREADONLY (data))
1224	{	808	{
1225	SvREADONLY_on (data);	809	SvREADONLY_on (data);
1226	req->data2ptr = (void *)data;	810	req->flags |= FLAG_SV2_RO_OFF;
1227	}	811	}
1228		812
1229	REQ_SEND;	813	REQ_SEND;
1230	}	814	}
1231	}	815	}
1232		816
1233	void	817	void
		818	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		819	PROTOTYPE: $$;$
		820	PPCODE:
		821	{
		822	SV *data;
		823	dREQ;
		824
		825	req->type = EIO_READLINK;
		826	req->sv1 = newSVsv (path);
		827	req->ptr1 = SvPVbyte_nolen (req->sv1);
		828
		829	REQ_SEND;
		830	}
		831
		832	void
1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	833	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1235	SV * out_fh
1236	SV * in_fh
1237	UV in_offset
1238	UV length
1239	SV * callback
1240	PROTOTYPE: $$$$;$	834	PROTOTYPE: $$$$;$
1241	PPCODE:	835	PPCODE:
1242	{	836	{
		837	int ifd = extract_fd (in_fh , 0);
		838	int ofd = extract_fd (out_fh, 0);
1243	dREQ;	839	dREQ;
1244		840
1245	req->type = REQ_SENDFILE;	841	req->type = EIO_SENDFILE;
1246	req->fh = newSVsv (out_fh);	842	req->sv1 = newSVsv (out_fh);
1247	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	843	req->int1 = ofd;
1248	req->fh2 = newSVsv (in_fh);	844	req->sv2 = newSVsv (in_fh);
1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	845	req->int2 = ifd;
1250	req->offset = in_offset;	846	req->offs = in_offset;
1251	req->length = length;	847	req->size = length;
1252		848
1253	REQ_SEND;	849	REQ_SEND;
1254	}	850	}
1255		851
1256	void	852	void
1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	853	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1258	SV * fh
1259	UV offset
1260	IV length
1261	SV * callback
1262	PROTOTYPE: $$$;$	854	PROTOTYPE: $$$;$
1263	PPCODE:	855	PPCODE:
1264	{	856	{
		857	int fd = extract_fd (fh, 0);
1265	dREQ;	858	dREQ;
1266		859
1267	req->type = REQ_READAHEAD;	860	req->type = EIO_READAHEAD;
1268	req->fh = newSVsv (fh);	861	req->sv1 = newSVsv (fh);
1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	862	req->int1 = fd;
1270	req->offset = offset;	863	req->offs = offset;
1271	req->length = length;	864	req->size = length;
1272		865
1273	REQ_SEND;	866	REQ_SEND;
1274	}	867	}
1275		868
1276	void	869	void
1277	aio_stat (fh_or_path,callback=&PL_sv_undef)	870	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1278	SV * fh_or_path
1279	SV * callback
1280	ALIAS:	871	ALIAS:
1281	aio_stat = REQ_STAT	872	aio_stat = EIO_STAT
1282	aio_lstat = REQ_LSTAT	873	aio_lstat = EIO_LSTAT
1283	PPCODE:	874	PPCODE:
1284	{	875	{
1285	dREQ;	876	dREQ;
1286		877
1287	New (0, req->statdata, 1, Stat_t);	878	req->sv1 = newSVsv (fh_or_path);
1288	if (!req->statdata)
1289	{
1290	req_free (req);
1291	croak ("out of memory during aio_req->statdata allocation");
1292	}
1293		879
1294	if (SvPOK (fh_or_path))	880	if (SvPOK (req->sv1))
1295	{	881	{
1296	req->type = ix;	882	req->type = ix;
1297	req->data = newSVsv (fh_or_path);
1298	req->dataptr = SvPVbyte_nolen (req->data);	883	req->ptr1 = SvPVbyte_nolen (req->sv1);
1299	}	884	}
1300	else	885	else
1301	{	886	{
1302	req->type = REQ_FSTAT;	887	req->type = EIO_FSTAT;
1303	req->fh = newSVsv (fh_or_path);
1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	888	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1305	}	889	}
1306		890
1307	REQ_SEND;	891	REQ_SEND;
1308	}	892	}
1309		893
1310	void	894	void
		895	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		896	PPCODE:
		897	{
		898	dREQ;
		899
		900	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		901	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		902	req->sv1 = newSVsv (fh_or_path);
		903
		904	if (SvPOK (req->sv1))
		905	{
		906	req->type = EIO_UTIME;
		907	req->ptr1 = SvPVbyte_nolen (req->sv1);
		908	}
		909	else
		910	{
		911	req->type = EIO_FUTIME;
		912	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		913	}
		914
		915	REQ_SEND;
		916	}
		917
		918	void
		919	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		920	PPCODE:
		921	{
		922	dREQ;
		923
		924	req->sv1 = newSVsv (fh_or_path);
		925	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		926
		927	if (SvPOK (req->sv1))
		928	{
		929	req->type = EIO_TRUNCATE;
		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
		931	}
		932	else
		933	{
		934	req->type = EIO_FTRUNCATE;
		935	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		936	}
		937
		938	REQ_SEND;
		939	}
		940
		941	void
		942	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		943	ALIAS:
		944	aio_chmod = EIO_CHMOD
		945	aio_mkdir = EIO_MKDIR
		946	PPCODE:
		947	{
		948	dREQ;
		949
		950	req->int2 = mode;
		951	req->sv1 = newSVsv (fh_or_path);
		952
		953	if (SvPOK (req->sv1))
		954	{
		955	req->type = ix;
		956	req->ptr1 = SvPVbyte_nolen (req->sv1);
		957	}
		958	else
		959	{
		960	req->type = EIO_FCHMOD;
		961	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		962	}
		963
		964	REQ_SEND;
		965	}
		966
		967	void
		968	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		969	PPCODE:
		970	{
		971	dREQ;
		972
		973	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		974	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		975	req->sv1 = newSVsv (fh_or_path);
		976
		977	if (SvPOK (req->sv1))
		978	{
		979	req->type = EIO_CHOWN;
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	}
		982	else
		983	{
		984	req->type = EIO_FCHOWN;
		985	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		986	}
		987
		988	REQ_SEND;
		989	}
		990
		991	void
		992	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		993	PPCODE:
		994	{
		995	dREQ;
		996
		997	req->type = EIO_READDIR;
		998	req->sv1 = newSVsv (pathname);
		999	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1000	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1001
		1002	if (flags & EIO_READDIR_DENTS)
		1003	req->int1 |= EIO_READDIR_CUSTOM2;
		1004
		1005	REQ_SEND;
		1006	}
		1007
		1008	void
1311	aio_unlink (pathname,callback=&PL_sv_undef)	1009	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1312	SV * pathname
1313	SV * callback
1314	ALIAS:	1010	ALIAS:
1315	aio_unlink = REQ_UNLINK	1011	aio_unlink = EIO_UNLINK
1316	aio_rmdir = REQ_RMDIR	1012	aio_rmdir = EIO_RMDIR
1317	aio_readdir = REQ_READDIR	1013	aio_readdir = EIO_READDIR
1318	PPCODE:	1014	PPCODE:
1319	{	1015	{
1320	dREQ;	1016	dREQ;
1321		1017
1322	req->type = ix;	1018	req->type = ix;
1323	req->data = newSVsv (pathname);	1019	req->sv1 = newSVsv (pathname);
1324	req->dataptr = SvPVbyte_nolen (req->data);	1020	req->ptr1 = SvPVbyte_nolen (req->sv1);
1325		1021
1326	REQ_SEND;	1022	REQ_SEND;
1327	}	1023	}
1328		1024
1329	void	1025	void
1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1331	SV * oldpath
1332	SV * newpath
1333	SV * callback
1334	ALIAS:	1027	ALIAS:
1335	aio_link = REQ_LINK	1028	aio_link = EIO_LINK
1336	aio_symlink = REQ_SYMLINK	1029	aio_symlink = EIO_SYMLINK
1337	aio_rename = REQ_RENAME	1030	aio_rename = EIO_RENAME
1338	PPCODE:	1031	PPCODE:
1339	{	1032	{
1340	dREQ;	1033	dREQ;
1341		1034
1342	req->type = ix;	1035	req->type = ix;
1343	req->fh = newSVsv (oldpath);	1036	req->sv1 = newSVsv (oldpath);
1344	req->data2ptr = SvPVbyte_nolen (req->fh);	1037	req->ptr1 = SvPVbyte_nolen (req->sv1);
1345	req->data = newSVsv (newpath);	1038	req->sv2 = newSVsv (newpath);
1346	req->dataptr = SvPVbyte_nolen (req->data);	1039	req->ptr2 = SvPVbyte_nolen (req->sv2);
1347		1040
1348	REQ_SEND;	1041	REQ_SEND;
1349	}	1042	}
1350		1043
1351	void	1044	void
1352	aio_busy (delay,callback=&PL_sv_undef)	1045	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1353	double delay
1354	SV * callback
1355	PPCODE:	1046	PPCODE:
1356	{	1047	{
1357	dREQ;	1048	dREQ;
1358		1049
1359	req->type = REQ_BUSY;	1050	req->type = EIO_MKNOD;
1360	req->fd = delay < 0. ? 0 : delay;	1051	req->sv1 = newSVsv (pathname);
1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1362		1053	req->int2 = (mode_t)mode;
		1054	req->offs = dev;
		1055
1363	REQ_SEND;	1056	REQ_SEND;
1364	}	1057	}
1365		1058
1366	void	1059	void
		1060	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1061	PPCODE:
		1062	{
		1063	dREQ;
		1064
		1065	req->type = EIO_BUSY;
		1066	req->nv1 = delay < 0. ? 0. : delay;
		1067
		1068	REQ_SEND;
		1069	}
		1070
		1071	void
1367	aio_group (callback=&PL_sv_undef)	1072	aio_group (SV *callback=&PL_sv_undef)
1368	SV * callback
1369	PROTOTYPE: ;$	1073	PROTOTYPE: ;$
1370	PPCODE:	1074	PPCODE:
1371	{	1075	{
1372	dREQ;	1076	dREQ;
1373		1077
1374	req->type = REQ_GROUP;	1078	req->type = EIO_GROUP;
		1079
1375	req_send (req);	1080	req_submit (req);
1376
1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1081	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1378	}	1082	}
1379		1083
1380	void	1084	void
1381	aio_nop (callback=&PL_sv_undef)	1085	aio_nop (SV *callback=&PL_sv_undef)
1382	SV * callback	1086	ALIAS:
		1087	aio_nop = EIO_NOP
		1088	aio_sync = EIO_SYNC
1383	PPCODE:	1089	PPCODE:
1384	{	1090	{
1385	dREQ;	1091	dREQ;
1386		1092
1387	req->type = REQ_NOP;	1093	req->type = ix;
1388		1094
1389	REQ_SEND;	1095	REQ_SEND;
1390	}	1096	}
1391		1097
1392	void	1098	int
1393	aioreq_pri (int pri = DEFAULT_PRI)	1099	aioreq_pri (int pri = 0)
1394	CODE:	1100	PROTOTYPE: ;$
		1101	CODE:
		1102	RETVAL = next_pri;
		1103	if (items > 0)
		1104	{
1395	if (pri < PRI_MIN) pri = PRI_MIN;	1105	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1396	if (pri > PRI_MAX) pri = PRI_MAX;	1106	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1397	next_pri = pri + PRI_BIAS;	1107	next_pri = pri;
		1108	}
		1109	OUTPUT:
		1110	RETVAL
1398		1111
1399	void	1112	void
1400	aioreq_nice (int nice = 0)	1113	aioreq_nice (int nice = 0)
1401	CODE:	1114	CODE:
1402	nice = next_pri - nice;	1115	nice = next_pri - nice;
1403	if (nice < PRI_MIN) nice = PRI_MIN;	1116	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1404	if (nice > PRI_MAX) nice = PRI_MAX;	1117	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1405	next_pri = nice + PRI_BIAS;	1118	next_pri = nice;
1406		1119
1407	void	1120	void
1408	flush ()	1121	flush ()
1409	PROTOTYPE:	1122	PROTOTYPE:
1410	CODE:	1123	CODE:
1411	while (nreqs)	1124	while (eio_nreqs ())
1412	{	1125	{
1413	poll_wait ();	1126	poll_wait ();
1414	poll_cb ();	1127	poll_cb ();
1415	}	1128	}
1416		1129
1417	void	1130	int
1418	poll()	1131	poll()
1419	PROTOTYPE:	1132	PROTOTYPE:
1420	CODE:	1133	CODE:
1421	if (nreqs)
1422	{
1423	poll_wait ();	1134	poll_wait ();
1424	poll_cb ();	1135	RETVAL = poll_cb ();
1425	}	1136	OUTPUT:
		1137	RETVAL
1426		1138
1427	int	1139	int
1428	poll_fileno()	1140	poll_fileno()
1429	PROTOTYPE:	1141	PROTOTYPE:
1430	CODE:	1142	CODE:
…		…
1442		1154
1443	void	1155	void
1444	poll_wait()	1156	poll_wait()
1445	PROTOTYPE:	1157	PROTOTYPE:
1446	CODE:	1158	CODE:
1447	if (nreqs)
1448	poll_wait ();	1159	poll_wait ();
1449		1160
1450	int	1161	int
1451	nreqs()	1162	nreqs()
1452	PROTOTYPE:	1163	PROTOTYPE:
1453	CODE:	1164	CODE:
1454	RETVAL = nreqs;	1165	RETVAL = eio_nreqs ();
1455	OUTPUT:	1166	OUTPUT:
1456	RETVAL	1167	RETVAL
1457		1168
		1169	int
		1170	nready()
		1171	PROTOTYPE:
		1172	CODE:
		1173	RETVAL = eio_nready ();
		1174	OUTPUT:
		1175	RETVAL
		1176
		1177	int
		1178	npending()
		1179	PROTOTYPE:
		1180	CODE:
		1181	RETVAL = eio_npending ();
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	nthreads()
		1187	PROTOTYPE:
		1188	CODE:
		1189	RETVAL = eio_nthreads ();
		1190	OUTPUT:
		1191	RETVAL
		1192
		1193	int
		1194	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1195	PROTOTYPE: $$$$
		1196	CODE:
		1197	{
		1198	#if _XOPEN_SOURCE >= 600
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	}
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	ssize_t
		1208	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1209	PROTOTYPE: $$$$
		1210	CODE:
		1211	eio_sendfile_sync (ofh, ifh, offset, count);
		1212
		1213	void _on_next_submit (SV *cb)
		1214	CODE:
		1215	SvREFCNT_dec (on_next_submit);
		1216	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1217
1458	PROTOTYPES: DISABLE	1218	PROTOTYPES: DISABLE
1459		1219
1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1220	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1461		1221
1462	void	1222	void
1463	cancel (aio_req_ornot req)	1223	cancel (aio_req_ornot req)
1464	CODE:	1224	CODE:
1465	req_cancel (req);	1225	eio_cancel (req);
1466		1226
1467	void	1227	void
1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1228	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1469	CODE:	1229	PPCODE:
		1230	{
		1231	if (GIMME_V != G_VOID)
		1232	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1233
		1234	if (items > 1)
		1235	{
		1236	SV *cb_cv = get_cb (callback);
		1237
1470	SvREFCNT_dec (req->callback);	1238	SvREFCNT_dec (req->callback);
1471	req->callback = newSVsv (callback);	1239	req->callback = SvREFCNT_inc (cb_cv);
		1240	}
		1241	}
1472		1242
1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1243	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1474		1244
1475	void	1245	void
1476	add (aio_req grp, ...)	1246	add (aio_req grp, ...)
1477	PPCODE:	1247	PPCODE:
1478	{	1248	{
1479	int i;	1249	int i;
1480	aio_req req;
1481		1250
1482	if (grp->fd == 2)	1251	if (grp->int1 == 2)
1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1252	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1484		1253
1485	for (i = 1; i < items; ++i )	1254	for (i = 1; i < items; ++i )
1486	{	1255	{
		1256	aio_req req;
		1257
1487	if (GIMME_V != G_VOID)	1258	if (GIMME_V != G_VOID)
1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1259	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1489		1260
1490	req = SvAIO_REQ (ST (i));	1261	req = SvAIO_REQ (ST (i));
1491		1262
1492	if (req)	1263	if (req)
1493	{	1264	eio_grp_add (grp, req);
1494	++grp->length;
1495	req->grp = grp;
1496
1497	req->grp_prev = 0;
1498	req->grp_next = grp->grp_first;
1499
1500	if (grp->grp_first)
1501	grp->grp_first->grp_prev = req;
1502
1503	grp->grp_first = req;
1504	}
1505	}	1265	}
1506	}	1266	}
1507		1267
1508	void	1268	void
1509	cancel_subs (aio_req_ornot req)	1269	cancel_subs (aio_req_ornot req)
…		…
1513	void	1273	void
1514	result (aio_req grp, ...)	1274	result (aio_req grp, ...)
1515	CODE:	1275	CODE:
1516	{	1276	{
1517	int i;	1277	int i;
		1278	AV *av;
		1279
		1280	grp->errorno = errno;
		1281
1518	AV *av = newAV ();	1282	av = newAV ();
		1283	av_extend (av, items - 1);
1519		1284
1520	for (i = 1; i < items; ++i )	1285	for (i = 1; i < items; ++i )
1521	av_push (av, newSVsv (ST (i)));	1286	av_push (av, newSVsv (ST (i)));
1522		1287
1523	SvREFCNT_dec (grp->data);	1288	SvREFCNT_dec (grp->sv1);
1524	grp->data = (SV *)av;	1289	grp->sv1 = (SV *)av;
1525	}	1290	}
		1291
		1292	void
		1293	errno (aio_req grp, int errorno = errno)
		1294	CODE:
		1295	grp->errorno = errorno;
1526		1296
1527	void	1297	void
1528	limit (aio_req grp, int limit)	1298	limit (aio_req grp, int limit)
1529	CODE:	1299	CODE:
1530	grp->fd2 = limit;	1300	eio_grp_limit (grp, limit);
1531	aio_grp_feed (grp);
1532		1301
1533	void	1302	void
1534	feed (aio_req grp, SV *callback=&PL_sv_undef)	1303	feed (aio_req grp, SV *callback=&PL_sv_undef)
1535	CODE:	1304	CODE:
1536	{	1305	{
1537	SvREFCNT_dec (grp->fh2);	1306	SvREFCNT_dec (grp->sv2);
1538	grp->fh2 = newSVsv (callback);	1307	grp->sv2 = newSVsv (callback);
		1308	grp->feed = aio_grp_feed;
1539		1309
1540	if (grp->fd2 <= 0)	1310	if (grp->int2 <= 0)
1541	grp->fd2 = 2;	1311	grp->int2 = 2;
1542		1312
1543	aio_grp_feed (grp);	1313	eio_grp_limit (grp, grp->int2);
1544	}	1314	}
1545		1315

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