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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.8 by root, Mon Jul 11 02:53:59 2005 UTC vs.
Revision 1.141 by root, Sat Jun 6 17:25:13 2009 UTC

		1	#include "libeio/xthread.h"
		2
		3	#include <errno.h>
		4
1	#include "EXTERN.h"	5	#include "EXTERN.h"
2	#include "perl.h"	6	#include "perl.h"
3	#include "XSUB.h"	7	#include "XSUB.h"
4		8
		9	#include <stddef.h>
		10	#include <stdlib.h>
		11	#include <errno.h>
5	#include <sys/types.h>	12	#include <sys/types.h>
6	#include <sys/stat.h>	13	#include <sys/stat.h>
7	#include <unistd.h>	14	#include <limits.h>
8	#include <fcntl.h>	15	#include <fcntl.h>
9	#include <signal.h>
10	#include <sched.h>	16	#include <sched.h>
11	#include <endian.h>
12		17
13	#include <pthread.h>	18	/* perl namespace pollution */
14	#include <sys/syscall.h>	19	#undef VERSION
15		20
16	typedef void *InputStream; /* hack, but 5.6.1 is simply toooo old ;) */	21	#ifdef _WIN32
17	typedef void *OutputStream; /* hack, but 5.6.1 is simply toooo old ;) */
18	typedef void *InOutStream; /* hack, but 5.6.1 is simply toooo old ;) */
19		22
20	#if __ia64	23	# define EIO_STRUCT_DIRENT Direntry_t
21	# define STACKSIZE 65536	24	# undef malloc
		25	# undef free
		26
		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
22	#else	59	#else
23	# define STACKSIZE 4096	60
		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
24	#endif	68	#endif
25		69
		70	/* perl stupidly overrides readdir and maybe others */
		71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
		83	#endif
		84
		85	/*****************************************************************************/
		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	static HV *stash;
		99	typedef SV SV8; /* byte-sv, used for argument-checking */
		100
		101	#define AIO_REQ_KLASS "IO::AIO::REQ"
		102	#define AIO_GRP_KLASS "IO::AIO::GRP"
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/eio.h"
		113
		114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void req_destroy (eio_req *grp);
		117	#define EIO_DESTROY(req) req_destroy (req)
		118
26	enum {	119	enum {
27	REQ_QUIT,	120	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
28	REQ_OPEN, REQ_CLOSE,
29	REQ_READ, REQ_WRITE, REQ_READAHEAD,
30	REQ_STAT, REQ_LSTAT, REQ_FSTAT, REQ_UNLINK,
31	REQ_FSYNC, REQ_FDATASYNC,
32	};	121	};
33		122
34	typedef struct aio_cb {	123	#include "libeio/eio.c"
35	struct aio_cb *volatile next;
36		124
37	int type;
38
39	int fd;
40	off_t offset;
41	size_t length;
42	ssize_t result;
43	mode_t mode; /* open */
44	int errorno;
45	SV *data, *callback;
46	void *dataptr;
47	STRLEN dataoffset;
48
49	Stat_t *statdata;
50	} aio_cb;
51
52	typedef aio_cb *aio_req;	125	typedef eio_req *aio_req;
		126	typedef eio_req *aio_req_ornot;
53		127
54	static int started;	128	static SV *on_next_submit;
55	static int nreqs;	129	static int next_pri = EIO_PRI_DEFAULT;
56	static int max_outstanding = 1<<30;	130	static int max_outstanding;
57	static int respipe [2];
58		131
59	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	132	static int respipe_osf [2], respipe [2] = { -1, -1 };
60	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
61	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
62		133
63	static volatile aio_req reqs, reqe; /* queue start, queue end */	134	static void req_destroy (aio_req req);
64	static volatile aio_req ress, rese; /* queue start, queue end */	135	static void req_cancel (aio_req req);
		136
		137	static void want_poll (void)
		138	{
		139	/* write a dummy byte to the pipe so fh becomes ready */
		140	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		141	}
		142
		143	static void done_poll (void)
		144	{
		145	/* read any signals sent by the worker threads */
		146	char buf [4];
		147	while (respipe_read (respipe [0], buf, 4) == 4)
		148	;
		149	}
		150
		151	/* must be called at most once */
		152	static SV *req_sv (aio_req req, const char *klass)
		153	{
		154	if (!req->self)
		155	{
		156	req->self = (SV *)newHV ();
		157	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		158	}
		159
		160	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		161	}
		162
		163	static aio_req SvAIO_REQ (SV *sv)
		164	{
		165	MAGIC *mg;
		166
		167	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		168	croak ("object of class " AIO_REQ_KLASS " expected");
		169
		170	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		171
		172	return mg ? (aio_req)mg->mg_ptr : 0;
		173	}
		174
		175	static void aio_grp_feed (aio_req grp)
		176	{
		177	if (grp->sv2 && SvOK (grp->sv2))
		178	{
		179	dSP;
		180
		181	ENTER;
		182	SAVETMPS;
		183	PUSHMARK (SP);
		184	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		185	PUTBACK;
		186	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		187	SPAGAIN;
		188	FREETMPS;
		189	LEAVE;
		190	}
		191	}
		192
		193	static void req_submit (eio_req *req)
		194	{
		195	eio_submit (req);
		196
		197	if (expect_false (on_next_submit))
		198	{
		199	dSP;
		200	SV *cb = sv_2mortal (on_next_submit);
		201
		202	on_next_submit = 0;
		203
		204	PUSHMARK (SP);
		205	PUTBACK;
		206	call_sv (cb, G_DISCARD | G_EVAL);
		207	}
		208	}
		209
		210	static int req_invoke (eio_req *req)
		211	{
		212	dSP;
		213
		214	if (req->flags & FLAG_SV2_RO_OFF)
		215	SvREADONLY_off (req->sv2);
		216
		217	if (!EIO_CANCELLED (req) && req->callback)
		218	{
		219	ENTER;
		220	SAVETMPS;
		221	PUSHMARK (SP);
		222	EXTEND (SP, 1);
		223
		224	switch (req->type)
		225	{
		226	case EIO_READDIR:
		227	{
		228	SV *rv = &PL_sv_undef;
		229
		230	if (req->result >= 0)
		231	{
		232	int i;
		233	char *buf = req->ptr2;
		234	AV *av = newAV ();
		235
		236	av_extend (av, req->result - 1);
		237
		238	for (i = 0; i < req->result; ++i)
		239	{
		240	if (req->int1 & EIO_READDIR_DENTS)
		241	{
		242	eio_dirent *ent = (eio_dirent *)buf;
		243	SV *namesv = newSVpvn (ent->name, ent->namelen);
		244
		245	if (req->int1 & EIO_READDIR_CUSTOM2)
		246	{
		247	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		248	AV *avent = newAV ();
		249
		250	av_extend (avent, 2);
		251
		252	if (!sv_type [ent->type])
		253	{
		254	sv_type [ent->type] = newSViv (ent->type);
		255	SvREADONLY_on (sv_type [ent->type]);
		256	}
		257
		258	av_store (avent, 0, namesv);
		259	av_store (avent, 1, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		260	av_store (avent, 2, SvREFCNT_inc (sv_type [ent->type]));
		261
		262	av_store (av, i, newRV_noinc ((SV *)avent));
		263	}
		264	else
		265	av_store (av, i, namesv);
		266
		267	buf += sizeof (eio_dirent);
		268	}
		269	else
		270	{
		271	SV *name = newSVpv (buf, 0);
		272	av_store (av, i, name);
		273	buf += SvCUR (name) + 1;
		274	}
		275	}
		276
		277	rv = sv_2mortal (newRV_noinc ((SV *)av));
		278	}
		279
		280	PUSHs (rv);
		281
		282	if (req->int1 & EIO_READDIR_CUSTOM1)
		283	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		284	}
		285	break;
		286
		287	case EIO_OPEN:
		288	{
		289	/* convert fd to fh */
		290	SV *fh = &PL_sv_undef;
		291
		292	if (req->result >= 0)
		293	{
		294	GV *gv = (GV *)sv_newmortal ();
		295	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		296	char sym [64];
		297	int symlen;
		298
		299	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		300	gv_init (gv, stash, sym, symlen, 0);
		301
		302	symlen = snprintf (
		303	sym,
		304	sizeof (sym),
		305	"%s&=%d",
		306	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		307	req->result
		308	);
		309
		310	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		311	fh = (SV *)gv;
		312	}
		313
		314	PUSHs (fh);
		315	}
		316	break;
		317
		318	case EIO_GROUP:
		319	req->int1 = 2; /* mark group as finished */
		320
		321	if (req->sv1)
		322	{
		323	int i;
		324	AV *av = (AV *)req->sv1;
		325
		326	EXTEND (SP, AvFILL (av) + 1);
		327	for (i = 0; i <= AvFILL (av); ++i)
		328	PUSHs (*av_fetch (av, i, 0));
		329	}
		330	break;
		331
		332	case EIO_NOP:
		333	case EIO_BUSY:
		334	break;
		335
		336	case EIO_READLINK:
		337	if (req->result > 0)
		338	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		339	break;
		340
		341	case EIO_STAT:
		342	case EIO_LSTAT:
		343	case EIO_FSTAT:
		344	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		345	PL_laststatval = req->result;
		346	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		347	PUSHs (sv_2mortal (newSViv (req->result)));
		348	break;
		349
		350	case EIO_READ:
		351	{
		352	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		353	*SvEND (req->sv2) = 0;
		354	SvPOK_only (req->sv2);
		355	SvSETMAGIC (req->sv2);
		356	PUSHs (sv_2mortal (newSViv (req->result)));
		357	}
		358	break;
		359
		360	case EIO_DUP2:
		361	if (req->result > 0)
		362	req->result = 0;
		363	/* FALLTHROUGH */
		364
		365	default:
		366	PUSHs (sv_2mortal (newSViv (req->result)));
		367	break;
		368	}
		369
		370	errno = req->errorno;
		371
		372	PUTBACK;
		373	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		374	SPAGAIN;
		375
		376	FREETMPS;
		377	LEAVE;
		378
		379	PUTBACK;
		380	}
		381
		382	return !!SvTRUE (ERRSV);
		383	}
		384
		385	static void req_destroy (aio_req req)
		386	{
		387	if (req->self)
		388	{
		389	sv_unmagic (req->self, PERL_MAGIC_ext);
		390	SvREFCNT_dec (req->self);
		391	}
		392
		393	SvREFCNT_dec (req->sv1);
		394	SvREFCNT_dec (req->sv2);
		395	SvREFCNT_dec (req->callback);
		396
		397	Safefree (req);
		398	}
		399
		400	static void req_cancel_subs (aio_req grp)
		401	{
		402	aio_req sub;
		403
		404	if (grp->type != EIO_GROUP)
		405	return;
		406
		407	SvREFCNT_dec (grp->sv2);
		408	grp->sv2 = 0;
		409
		410	eio_grp_cancel (grp);
		411	}
		412
		413	#ifdef USE_SOCKETS_AS_HANDLES
		414	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		415	#else
		416	# define TO_SOCKET(x) (x)
		417	#endif
65		418
66	static void	419	static void
67	poll_wait ()	420	create_respipe (void)
68	{	421	{
69	if (!nreqs)	422	int old_readfd = respipe [0];
70	return;
71		423
		424	if (respipe [1] >= 0)
		425	respipe_close (TO_SOCKET (respipe [1]));
		426
		427	#ifdef _WIN32
		428	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		429	#else
		430	if (pipe (respipe))
		431	#endif
		432	croak ("unable to initialize result pipe");
		433
		434	if (old_readfd >= 0)
		435	{
		436	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		437	croak ("unable to initialize result pipe(2)");
		438
		439	respipe_close (respipe [0]);
		440	respipe [0] = old_readfd;
		441	}
		442
		443	#ifdef _WIN32
		444	int arg = 1;
		445	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		446	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		447	#else
		448	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		449	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		450	#endif
		451	croak ("unable to initialize result pipe(3)");
		452
		453	respipe_osf [0] = TO_SOCKET (respipe [0]);
		454	respipe_osf [1] = TO_SOCKET (respipe [1]);
		455	}
		456
		457	static void poll_wait (void)
		458	{
72	fd_set rfd;	459	fd_set rfd;
		460
		461	while (eio_nreqs ())
		462	{
		463	int size;
		464
		465	X_LOCK (reslock);
		466	size = res_queue.size;
		467	X_UNLOCK (reslock);
		468
		469	if (size)
		470	return;
		471
		472	etp_maybe_start_thread ();
		473
73	FD_ZERO(&rfd);	474	FD_ZERO (&rfd);
74	FD_SET(respipe [0], &rfd);	475	FD_SET (respipe [0], &rfd);
75		476
76	select (respipe [0] + 1, &rfd, 0, 0, 0);	477	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
77	}
78
79	static int
80	poll_cb ()
81	{
82	dSP;
83	int count = 0;
84	aio_req req;
85
86	{
87	/* read and signals sent by the worker threads */
88	char buf [32];
89	while (read (respipe [0], buf, 32) > 0)
90	;
91	}	478	}
		479	}
92		480
		481	static int poll_cb (void)
		482	{
93	for (;;)	483	for (;;)
94	{	484	{
95	pthread_mutex_lock (&reslock);	485	int res = eio_poll ();
96		486
97	req = ress;
98
99	if (ress)	487	if (res > 0)
100	{
101	ress = ress->next;
102	if (!ress) rese = 0;
103	}
104
105	pthread_mutex_unlock (&reslock);
106
107	if (!req)
108	break;	488	croak (0);
109		489
110	nreqs--;	490	if (!max_outstanding || max_outstanding > eio_nreqs ())
		491	return res;
111		492
112	if (req->type == REQ_QUIT)	493	poll_wait ();
113	started--;
114	else
115	{
116	int errorno = errno;
117	errno = req->errorno;
118
119	if (req->type == REQ_READ)
120	SvCUR_set (req->data, req->dataoffset
121	+ req->result > 0 ? req->result : 0);
122
123	if (req->data)
124	SvREFCNT_dec (req->data);
125
126	if (req->type == REQ_STAT || req->type == REQ_LSTAT || req->type == REQ_FSTAT)
127	{
128	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
129	PL_laststatval = req->result;
130	PL_statcache = *(req->statdata);
131
132	Safefree (req->statdata);
133	}
134
135	PUSHMARK (SP);
136	XPUSHs (sv_2mortal (newSViv (req->result)));
137
138	if (req->type == REQ_OPEN)
139	{
140	/* convert fd to fh */
141	SV *fh;
142
143	PUTBACK;
144	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
145	SPAGAIN;
146
147	fh = POPs;
148
149	PUSHMARK (SP);
150	XPUSHs (fh);
151	}
152
153	if (SvOK (req->callback))
154	{
155	PUTBACK;
156	call_sv (req->callback, G_VOID | G_EVAL);
157	SPAGAIN;
158	}
159
160	if (req->callback)
161	SvREFCNT_dec (req->callback);
162
163	errno = errorno;
164	count++;
165	}
166
167	Safefree (req);
168	}	494	}
169
170	return count;
171	}	495	}
172		496
173	static void *aio_proc(void *arg);	497	static void atfork_child (void)
174
175	static void
176	start_thread (void)
177	{	498	{
178	sigset_t fullsigset, oldsigset;	499	create_respipe ();
179	pthread_t tid;
180	pthread_attr_t attr;
181
182	pthread_attr_init (&attr);
183	pthread_attr_setstacksize (&attr, STACKSIZE);
184	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
185
186	sigfillset (&fullsigset);
187	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
188
189	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
190	started++;
191
192	sigprocmask (SIG_SETMASK, &oldsigset, 0);
193	}	500	}
194		501
195	static void	502	static SV *
196	send_req (aio_req req)	503	get_cb (SV *cb_sv)
197	{	504	{
198	nreqs++;	505	HV *st;
		506	GV *gvp;
		507	CV *cv;
199		508
200	pthread_mutex_lock (&reqlock);	509	if (!SvOK (cb_sv))
		510	return 0;
201		511
202	req->next = 0;	512	cv = sv_2cv (cb_sv, &st, &gvp, 0);
203		513
204	if (reqe)	514	if (!cv)
205	{	515	croak ("IO::AIO callback must be undef or a CODE reference");
206	reqe->next = req;
207	reqe = req;
208	}
209	else
210	reqe = reqs = req;
211		516
212	pthread_cond_signal (&reqwait);	517	return (SV *)cv;
213	pthread_mutex_unlock (&reqlock);
214
215	while (nreqs > max_outstanding)
216	{
217	poll_wait ();
218	poll_cb ();
219	}
220	}	518	}
221		519
222	static void	520	#define dREQ \
223	end_thread (void)	521	SV *cb_cv; \
224	{
225	aio_req req;	522	aio_req req; \
226	New (0, req, 1, aio_cb);	523	int req_pri = next_pri; \
227	req->type = REQ_QUIT;	524	next_pri = EIO_PRI_DEFAULT; \
228		525	\
229	send_req (req);	526	cb_cv = get_cb (callback); \
230	}	527	\
231
232	static void
233	read_write (int dowrite, int fd, off_t offset, size_t length,
234	SV *data, STRLEN dataoffset, SV *callback)
235	{
236	aio_req req;
237	STRLEN svlen;
238	char *svptr = SvPV (data, svlen);
239
240	SvUPGRADE (data, SVt_PV);
241	SvPOK_on (data);
242
243	if (dataoffset < 0)
244	dataoffset += svlen;
245
246	if (dataoffset < 0 || dataoffset > svlen)
247	croak ("data offset outside of string");
248
249	if (dowrite)
250	{
251	/* write: check length and adjust. */
252	if (length < 0 || length + dataoffset > svlen)
253	length = svlen - dataoffset;
254	}
255	else
256	{
257	/* read: grow scalar as necessary */
258	svptr = SvGROW (data, length + dataoffset);
259	}
260
261	if (length < 0)
262	croak ("length must not be negative");
263
264	Newz (0, req, 1, aio_cb);	528	Newz (0, req, 1, eio_req); \
265		529	if (!req) \
266	if (!req)
267	croak ("out of memory during aio_req allocation");	530	croak ("out of memory during eio_req allocation"); \
268		531	\
269	req->type = dowrite ? REQ_WRITE : REQ_READ;
270	req->fd = fd;
271	req->offset = offset;
272	req->length = length;
273	req->data = SvREFCNT_inc (data);
274	req->dataptr = (char *)svptr + dataoffset;
275	req->callback = SvREFCNT_inc (callback);	532	req->callback = SvREFCNT_inc (cb_cv); \
		533	req->pri = req_pri
276		534
277	send_req (req);	535	#define REQ_SEND \
278	}	536	PUTBACK; \
		537	req_submit (req); \
		538	SPAGAIN; \
		539	\
		540	if (GIMME_V != G_VOID) \
		541	XPUSHs (req_sv (req, AIO_REQ_KLASS));
279		542
280	static void *	543	static int
281	aio_proc (void *thr_arg)	544	extract_fd (SV *fh, int wr)
282	{	545	{
283	aio_req req;	546	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
284	int type;
285		547
286	do	548	if (fd < 0)
287	{	549	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
288	pthread_mutex_lock (&reqlock);
289		550
290	for (;;)	551	return fd;
291	{	552	}
292	req = reqs;
293		553
294	if (reqs)	554	MODULE = IO::AIO PACKAGE = IO::AIO
295	{
296	reqs = reqs->next;
297	if (!reqs) reqe = 0;
298	}
299		555
300	if (req)	556	PROTOTYPES: ENABLE
301	break;
302		557
303	pthread_cond_wait (&reqwait, &reqlock);	558	BOOT:
304	}	559	{
		560	stash = gv_stashpv ("IO::AIO", 1);
305		561
306	pthread_mutex_unlock (&reqlock);	562	static const struct {
307		563	const char *name;
308	errno = 0; /* strictly unnecessary */	564	IV iv;
309		565	} *civ, const_iv[] = {
310	type = req->type;	566	# define const_iv(name, value) { # name, (IV) value },
311		567	# define const_eio(name) { # name, (IV) EIO_ ## name },
312	switch (type)	568	const_iv (EXDEV , EXDEV)
313	{	569	const_iv (ENOSYS , ENOSYS)
314	case REQ_READ: req->result = pread64 (req->fd, req->dataptr, req->length, req->offset); break;	570	const_iv (O_RDONLY, O_RDONLY)
315	case REQ_WRITE: req->result = pwrite64 (req->fd, req->dataptr, req->length, req->offset); break;	571	const_iv (O_WRONLY, O_WRONLY)
316	#if SYS_readahead	572	const_iv (O_CREAT , O_CREAT)
317	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	573	const_iv (O_TRUNC , O_TRUNC)
318	#else	574	#ifndef _WIN32
319	case REQ_READAHEAD: req->result = -1; errno = ENOSYS; break;	575	const_iv (S_IFIFO , S_IFIFO)
320	#endif	576	#endif
		577	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		578	const_eio (SYNC_FILE_RANGE_WRITE)
		579	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
321		580
322	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	581	const_eio (READDIR_DENTS)
323	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	582	const_eio (READDIR_DIRS_FIRST)
324	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	583	const_eio (READDIR_STAT_ORDER)
		584	const_eio (READDIR_FOUND_UNKNOWN)
325		585
326	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	586	const_eio (DT_UNKNOWN)
327	case REQ_CLOSE: req->result = close (req->fd); break;	587	const_eio (DT_FIFO)
328	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	588	const_eio (DT_CHR)
		589	const_eio (DT_DIR)
		590	const_eio (DT_BLK)
		591	const_eio (DT_REG)
		592	const_eio (DT_LNK)
		593	const_eio (DT_SOCK)
		594	const_eio (DT_WHT)
		595	};
329		596
330	case REQ_FSYNC: req->result = fsync (req->fd); break;	597	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
331	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	598	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
332		599
333	case REQ_QUIT:	600	create_respipe ();
334	break;
335		601
336	default:	602	if (eio_init (want_poll, done_poll) < 0)
337	req->result = ENOSYS;	603	croak ("IO::AIO: unable to initialise eio library");
338	break;
339	}
340		604
341	req->errorno = errno;	605	/* atfork child called in fifo order, so before eio's handler */
342		606	X_THREAD_ATFORK (0, 0, atfork_child);
343	pthread_mutex_lock (&reslock);
344
345	req->next = 0;
346
347	if (rese)
348	{
349	rese->next = req;
350	rese = req;
351	}
352	else
353	{
354	rese = ress = req;
355
356	/* write a dummy byte to the pipe so fh becomes ready */
357	write (respipe [1], &respipe, 1);
358	}
359
360	pthread_mutex_unlock (&reslock);
361	}
362	while (type != REQ_QUIT);
363
364	return 0;
365	}	607	}
366		608
367	MODULE = IO::AIO PACKAGE = IO::AIO
368
369	PROTOTYPES: ENABLE
370
371	BOOT:
372	{
373	if (pipe (respipe))
374	croak ("unable to initialize result pipe");
375
376	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
377	croak ("cannot set result pipe to nonblocking mode");
378
379	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
380	croak ("cannot set result pipe to nonblocking mode");
381	}
382
383	void	609	void
384	min_parallel(nthreads)	610	max_poll_reqs (int nreqs)
385	int nthreads
386	PROTOTYPE: $	611	PROTOTYPE: $
387	CODE:	612	CODE:
388	while (nthreads > started)	613	eio_set_max_poll_reqs (nreqs);
389	start_thread ();
390		614
391	void	615	void
392	max_parallel(nthreads)	616	max_poll_time (double nseconds)
393	int nthreads
394	PROTOTYPE: $	617	PROTOTYPE: $
395	CODE:	618	CODE:
		619	eio_set_max_poll_time (nseconds);
		620
		621	void
		622	min_parallel (int nthreads)
		623	PROTOTYPE: $
		624	CODE:
		625	eio_set_min_parallel (nthreads);
		626
		627	void
		628	max_parallel (int nthreads)
		629	PROTOTYPE: $
		630	CODE:
		631	eio_set_max_parallel (nthreads);
		632
		633	void
		634	max_idle (int nthreads)
		635	PROTOTYPE: $
		636	CODE:
		637	eio_set_max_idle (nthreads);
		638
		639	void
		640	max_outstanding (int maxreqs)
		641	PROTOTYPE: $
		642	CODE:
		643	max_outstanding = maxreqs;
		644
		645	void
		646	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		647	PROTOTYPE: $$$;$
		648	PPCODE:
396	{	649	{
397	int cur = started;	650	dREQ;
398	while (cur > nthreads)	651
399	{	652	req->type = EIO_OPEN;
400	end_thread ();	653	req->sv1 = newSVsv (pathname);
		654	req->ptr1 = SvPVbyte_nolen (req->sv1);
		655	req->int1 = flags;
		656	req->int2 = mode;
		657
		658	REQ_SEND;
		659	}
		660
		661	void
		662	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		663	PROTOTYPE: $;$
		664	ALIAS:
		665	aio_fsync = EIO_FSYNC
		666	aio_fdatasync = EIO_FDATASYNC
		667	PPCODE:
		668	{
		669	int fd = extract_fd (fh, 0);
		670	dREQ;
		671
		672	req->type = ix;
		673	req->sv1 = newSVsv (fh);
		674	req->int1 = fd;
		675
		676	REQ_SEND (req);
		677	}
		678
		679	void
		680	aio_sync_file_range (SV *fh, SV *offset, SV *nbytes, IV flags, SV *callback=&PL_sv_undef)
		681	PROTOTYPE: $$$$;$
		682	PPCODE:
		683	{
		684	int fd = extract_fd (fh, 0);
		685	dREQ;
		686
		687	req->type = EIO_SYNC_FILE_RANGE;
		688	req->sv1 = newSVsv (fh);
		689	req->int1 = fd;
		690	req->offs = SvVAL64 (offset);
		691	req->size = SvVAL64 (nbytes);
		692	req->int2 = flags;
		693
		694	REQ_SEND (req);
		695	}
		696
		697	void
		698	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $;$
		700	PPCODE:
		701	{
		702	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		703	int fd = extract_fd (fh, 0);
		704	dREQ;
		705
		706	if (close_pipe < 0)
		707	{
		708	int pipefd [2];
		709
		710	if (pipe (pipefd) < 0
		711	|| close (pipefd [1]) < 0
		712	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		713	abort (); /*D*/
		714
		715	close_pipe = pipefd [0];
		716	}
		717
		718	req->type = EIO_DUP2;
		719	req->int1 = close_pipe;
		720	req->sv2 = newSVsv (fh);
		721	req->int2 = fd;
		722
		723	REQ_SEND (req);
		724	}
		725
		726	void
		727	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
		728	ALIAS:
		729	aio_read = EIO_READ
		730	aio_write = EIO_WRITE
		731	PROTOTYPE: $$$$$;$
		732	PPCODE:
		733	{
		734	STRLEN svlen;
		735	int fd = extract_fd (fh, ix == EIO_WRITE);
		736	char *svptr = SvPVbyte (data, svlen);
		737	UV len = SvUV (length);
		738
		739	if (dataoffset < 0)
		740	dataoffset += svlen;
		741
		742	if (dataoffset < 0 || dataoffset > svlen)
		743	croak ("dataoffset outside of data scalar");
		744
		745	if (ix == EIO_WRITE)
		746	{
		747	/* write: check length and adjust. */
		748	if (!SvOK (length) || len + dataoffset > svlen)
		749	len = svlen - dataoffset;
		750	}
		751	else
		752	{
		753	/* read: check type and grow scalar as necessary */
		754	SvUPGRADE (data, SVt_PV);
		755	svptr = SvGROW (data, len + dataoffset + 1);
		756	}
		757
		758	{
		759	dREQ;
		760
		761	req->type = ix;
		762	req->sv1 = newSVsv (fh);
		763	req->int1 = fd;
		764	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		765	req->size = len;
		766	req->sv2 = SvREFCNT_inc (data);
		767	req->ptr2 = (char *)svptr + dataoffset;
		768	req->stroffset = dataoffset;
		769
		770	if (!SvREADONLY (data))
401	cur--;	771	{
		772	SvREADONLY_on (data);
		773	req->flags |= FLAG_SV2_RO_OFF;
402	}	774	}
403		775
404	while (started > nthreads)	776	REQ_SEND;
		777	}
		778	}
		779
		780	void
		781	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		782	PROTOTYPE: $$;$
		783	PPCODE:
		784	{
		785	SV *data;
		786	dREQ;
		787
		788	req->type = EIO_READLINK;
		789	req->sv1 = newSVsv (path);
		790	req->ptr1 = SvPVbyte_nolen (req->sv1);
		791
		792	REQ_SEND;
		793	}
		794
		795	void
		796	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
		797	PROTOTYPE: $$$$;$
		798	PPCODE:
		799	{
		800	int ifd = extract_fd (in_fh , 0);
		801	int ofd = extract_fd (out_fh, 0);
		802	dREQ;
		803
		804	req->type = EIO_SENDFILE;
		805	req->sv1 = newSVsv (out_fh);
		806	req->int1 = ofd;
		807	req->sv2 = newSVsv (in_fh);
		808	req->int2 = ifd;
		809	req->offs = SvVAL64 (in_offset);
		810	req->size = length;
		811
		812	REQ_SEND;
		813	}
		814
		815	void
		816	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
		817	PROTOTYPE: $$$;$
		818	PPCODE:
		819	{
		820	int fd = extract_fd (fh, 0);
		821	dREQ;
		822
		823	req->type = EIO_READAHEAD;
		824	req->sv1 = newSVsv (fh);
		825	req->int1 = fd;
		826	req->offs = SvVAL64 (offset);
		827	req->size = length;
		828
		829	REQ_SEND;
		830	}
		831
		832	void
		833	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
		834	ALIAS:
		835	aio_stat = EIO_STAT
		836	aio_lstat = EIO_LSTAT
		837	PPCODE:
		838	{
		839	dREQ;
		840
		841	req->sv1 = newSVsv (fh_or_path);
		842
		843	if (SvPOK (req->sv1))
		844	{
		845	req->type = ix;
		846	req->ptr1 = SvPVbyte_nolen (req->sv1);
		847	}
		848	else
		849	{
		850	req->type = EIO_FSTAT;
		851	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		852	}
		853
		854	REQ_SEND;
		855	}
		856
		857	void
		858	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		859	PPCODE:
		860	{
		861	dREQ;
		862
		863	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		864	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		865	req->sv1 = newSVsv (fh_or_path);
		866
		867	if (SvPOK (req->sv1))
		868	{
		869	req->type = EIO_UTIME;
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	}
		872	else
		873	{
		874	req->type = EIO_FUTIME;
		875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		876	}
		877
		878	REQ_SEND;
		879	}
		880
		881	void
		882	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->sv1 = newSVsv (fh_or_path);
		888	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		889
		890	if (SvPOK (req->sv1))
		891	{
		892	req->type = EIO_TRUNCATE;
		893	req->ptr1 = SvPVbyte_nolen (req->sv1);
		894	}
		895	else
		896	{
		897	req->type = EIO_FTRUNCATE;
		898	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		899	}
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		906	ALIAS:
		907	aio_chmod = EIO_CHMOD
		908	aio_mkdir = EIO_MKDIR
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->int2 = mode;
		914	req->sv1 = newSVsv (fh_or_path);
		915
		916	if (SvPOK (req->sv1))
		917	{
		918	req->type = ix;
		919	req->ptr1 = SvPVbyte_nolen (req->sv1);
		920	}
		921	else
		922	{
		923	req->type = EIO_FCHMOD;
		924	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		925	}
		926
		927	REQ_SEND;
		928	}
		929
		930	void
		931	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		932	PPCODE:
		933	{
		934	dREQ;
		935
		936	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		937	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		938	req->sv1 = newSVsv (fh_or_path);
		939
		940	if (SvPOK (req->sv1))
		941	{
		942	req->type = EIO_CHOWN;
		943	req->ptr1 = SvPVbyte_nolen (req->sv1);
		944	}
		945	else
		946	{
		947	req->type = EIO_FCHOWN;
		948	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		949	}
		950
		951	REQ_SEND;
		952	}
		953
		954	void
		955	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		956	PPCODE:
		957	{
		958	dREQ;
		959
		960	req->type = EIO_READDIR;
		961	req->sv1 = newSVsv (pathname);
		962	req->ptr1 = SvPVbyte_nolen (req->sv1);
		963	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		964
		965	if (flags & EIO_READDIR_DENTS)
		966	flags |= EIO_READDIR_CUSTOM2;
		967
		968	REQ_SEND;
		969	}
		970
		971	void
		972	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
		973	ALIAS:
		974	aio_unlink = EIO_UNLINK
		975	aio_rmdir = EIO_RMDIR
		976	aio_readdir = EIO_READDIR
		977	PPCODE:
		978	{
		979	dREQ;
		980
		981	req->type = ix;
		982	req->sv1 = newSVsv (pathname);
		983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984
		985	REQ_SEND;
		986	}
		987
		988	void
		989	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		990	ALIAS:
		991	aio_link = EIO_LINK
		992	aio_symlink = EIO_SYMLINK
		993	aio_rename = EIO_RENAME
		994	PPCODE:
		995	{
		996	dREQ;
		997
		998	req->type = ix;
		999	req->sv1 = newSVsv (oldpath);
		1000	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1001	req->sv2 = newSVsv (newpath);
		1002	req->ptr2 = SvPVbyte_nolen (req->sv2);
		1003
		1004	REQ_SEND;
		1005	}
		1006
		1007	void
		1008	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		1009	PPCODE:
		1010	{
		1011	dREQ;
		1012
		1013	req->type = EIO_MKNOD;
		1014	req->sv1 = newSVsv (pathname);
		1015	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1016	req->int2 = (mode_t)mode;
		1017	req->offs = dev;
		1018
		1019	REQ_SEND;
		1020	}
		1021
		1022	void
		1023	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1024	PPCODE:
		1025	{
		1026	dREQ;
		1027
		1028	req->type = EIO_BUSY;
		1029	req->nv1 = delay < 0. ? 0. : delay;
		1030
		1031	REQ_SEND;
		1032	}
		1033
		1034	void
		1035	aio_group (SV *callback=&PL_sv_undef)
		1036	PROTOTYPE: ;$
		1037	PPCODE:
		1038	{
		1039	dREQ;
		1040
		1041	req->type = EIO_GROUP;
		1042
		1043	req_submit (req);
		1044	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1045	}
		1046
		1047	void
		1048	aio_nop (SV *callback=&PL_sv_undef)
		1049	ALIAS:
		1050	aio_nop = EIO_NOP
		1051	aio_sync = EIO_SYNC
		1052	PPCODE:
		1053	{
		1054	dREQ;
		1055
		1056	req->type = ix;
		1057
		1058	REQ_SEND;
		1059	}
		1060
		1061	int
		1062	aioreq_pri (int pri = 0)
		1063	PROTOTYPE: ;$
		1064	CODE:
		1065	RETVAL = next_pri;
		1066	if (items > 0)
		1067	{
		1068	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1069	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1070	next_pri = pri;
		1071	}
		1072	OUTPUT:
		1073	RETVAL
		1074
		1075	void
		1076	aioreq_nice (int nice = 0)
		1077	CODE:
		1078	nice = next_pri - nice;
		1079	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1080	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1081	next_pri = nice;
		1082
		1083	void
		1084	flush ()
		1085	PROTOTYPE:
		1086	CODE:
		1087	while (eio_nreqs ())
405	{	1088	{
406	poll_wait ();	1089	poll_wait ();
407	poll_cb ();	1090	poll_cb ();
408	}	1091	}
409	}
410		1092
411	int	1093	int
412	max_outstanding(nreqs)
413	int nreqs
414	PROTOTYPE: $
415	CODE:
416	RETVAL = max_outstanding;
417	max_outstanding = nreqs;
418
419	void
420	aio_open(pathname,flags,mode,callback=&PL_sv_undef)
421	SV * pathname
422	int flags
423	int mode
424	SV * callback
425	PROTOTYPE: $$$;$
426	CODE:
427	{
428	aio_req req;
429
430	Newz (0, req, 1, aio_cb);
431
432	if (!req)
433	croak ("out of memory during aio_req allocation");
434
435	req->type = REQ_OPEN;
436	req->data = newSVsv (pathname);
437	req->dataptr = SvPV_nolen (req->data);
438	req->fd = flags;
439	req->mode = mode;
440	req->callback = SvREFCNT_inc (callback);
441
442	send_req (req);
443	}
444
445	void
446	aio_close(fh,callback=&PL_sv_undef)
447	InputStream fh
448	SV * callback
449	PROTOTYPE: $;$
450	ALIAS:
451	aio_close = REQ_CLOSE
452	aio_fsync = REQ_FSYNC
453	aio_fdatasync = REQ_FDATASYNC
454	CODE:
455	{
456	aio_req req;
457
458	Newz (0, req, 1, aio_cb);
459
460	if (!req)
461	croak ("out of memory during aio_req allocation");
462
463	req->type = ix;
464	req->fd = PerlIO_fileno (fh);
465	req->callback = SvREFCNT_inc (callback);
466
467	send_req (req);
468	}
469
470	void
471	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
472	InputStream fh
473	UV offset
474	IV length
475	SV * data
476	IV dataoffset
477	SV * callback
478	PROTOTYPE: $$$$$;$
479	CODE:
480	read_write (0, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
481
482	void
483	aio_write(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
484	OutputStream fh
485	UV offset
486	IV length
487	SV * data
488	IV dataoffset
489	SV * callback
490	PROTOTYPE: $$$$$;$
491	CODE:
492	read_write (1, PerlIO_fileno (fh), offset, length, data, dataoffset, callback);
493
494	void
495	aio_readahead(fh,offset,length,callback=&PL_sv_undef)
496	InputStream fh
497	UV offset
498	IV length
499	SV * callback
500	PROTOTYPE: $$$;$
501	CODE:
502	{
503	aio_req req;
504
505	if (length < 0)
506	croak ("length must not be negative");
507
508	Newz (0, req, 1, aio_cb);
509
510	if (!req)
511	croak ("out of memory during aio_req allocation");
512
513	req->type = REQ_READAHEAD;
514	req->fd = PerlIO_fileno (fh);
515	req->offset = offset;
516	req->length = length;
517	req->callback = SvREFCNT_inc (callback);
518
519	send_req (req);
520	}
521
522	void
523	aio_stat(fh_or_path,callback=&PL_sv_undef)
524	SV * fh_or_path
525	SV * callback
526	ALIAS:
527	aio_stat = REQ_STAT
528	aio_lstat = REQ_LSTAT
529	CODE:
530	{
531	aio_req req;
532
533	Newz (0, req, 1, aio_cb);
534
535	if (!req)
536	croak ("out of memory during aio_req allocation");
537
538	New (0, req->statdata, 1, Stat_t);
539
540	if (!req->statdata)
541	croak ("out of memory during aio_req->statdata allocation");
542
543	if (SvPOK (fh_or_path))
544	{
545	req->type = ix;
546	req->data = newSVsv (fh_or_path);
547	req->dataptr = SvPV_nolen (req->data);
548	}
549	else
550	{
551	req->type = REQ_FSTAT;
552	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
553	}
554
555	req->callback = SvREFCNT_inc (callback);
556
557	send_req (req);
558	}
559
560	void
561	aio_unlink(pathname,callback=&PL_sv_undef)
562	SV * pathname
563	SV * callback
564	CODE:
565	{
566	aio_req req;
567
568	Newz (0, req, 1, aio_cb);
569
570	if (!req)
571	croak ("out of memory during aio_req allocation");
572
573	req->type = REQ_UNLINK;
574	req->data = newSVsv (pathname);
575	req->dataptr = SvPV_nolen (req->data);
576	req->callback = SvREFCNT_inc (callback);
577
578	send_req (req);
579	}
580
581	void
582	flush()
583	PROTOTYPE:
584	CODE:
585	while (nreqs)
586	{
587	poll_wait ();
588	poll_cb ();
589	}
590
591	void
592	poll()	1094	poll()
593	PROTOTYPE:	1095	PROTOTYPE:
594	CODE:	1096	CODE:
595	if (nreqs)
596	{
597	poll_wait ();	1097	poll_wait ();
598	poll_cb ();	1098	RETVAL = poll_cb ();
599	}	1099	OUTPUT:
		1100	RETVAL
600		1101
601	int	1102	int
602	poll_fileno()	1103	poll_fileno()
603	PROTOTYPE:	1104	PROTOTYPE:
604	CODE:	1105	CODE:
…		…
616		1117
617	void	1118	void
618	poll_wait()	1119	poll_wait()
619	PROTOTYPE:	1120	PROTOTYPE:
620	CODE:	1121	CODE:
621	if (nreqs)
622	poll_wait ();	1122	poll_wait ();
623		1123
624	int	1124	int
625	nreqs()	1125	nreqs()
626	PROTOTYPE:	1126	PROTOTYPE:
627	CODE:	1127	CODE:
628	RETVAL = nreqs;	1128	RETVAL = eio_nreqs ();
629	OUTPUT:	1129	OUTPUT:
630	RETVAL	1130	RETVAL
631		1131
		1132	int
		1133	nready()
		1134	PROTOTYPE:
		1135	CODE:
		1136	RETVAL = eio_nready ();
		1137	OUTPUT:
		1138	RETVAL
		1139
		1140	int
		1141	npending()
		1142	PROTOTYPE:
		1143	CODE:
		1144	RETVAL = eio_npending ();
		1145	OUTPUT:
		1146	RETVAL
		1147
		1148	int
		1149	nthreads()
		1150	PROTOTYPE:
		1151	CODE:
		1152	RETVAL = eio_nthreads ();
		1153	OUTPUT:
		1154	RETVAL
		1155
		1156	void _on_next_submit (SV *cb)
		1157	CODE:
		1158	SvREFCNT_dec (on_next_submit);
		1159	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1160
		1161	PROTOTYPES: DISABLE
		1162
		1163	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1164
		1165	void
		1166	cancel (aio_req_ornot req)
		1167	CODE:
		1168	eio_cancel (req);
		1169
		1170	void
		1171	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1172	PPCODE:
		1173	{
		1174	if (GIMME_V != G_VOID)
		1175	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1176
		1177	if (items > 1)
		1178	{
		1179	SV *cb_cv = get_cb (callback);
		1180
		1181	SvREFCNT_dec (req->callback);
		1182	req->callback = SvREFCNT_inc (cb_cv);
		1183	}
		1184	}
		1185
		1186	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1187
		1188	void
		1189	add (aio_req grp, ...)
		1190	PPCODE:
		1191	{
		1192	int i;
		1193
		1194	if (grp->int1 == 2)
		1195	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1196
		1197	for (i = 1; i < items; ++i )
		1198	{
		1199	aio_req req;
		1200
		1201	if (GIMME_V != G_VOID)
		1202	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1203
		1204	req = SvAIO_REQ (ST (i));
		1205
		1206	if (req)
		1207	eio_grp_add (grp, req);
		1208	}
		1209	}
		1210
		1211	void
		1212	cancel_subs (aio_req_ornot req)
		1213	CODE:
		1214	req_cancel_subs (req);
		1215
		1216	void
		1217	result (aio_req grp, ...)
		1218	CODE:
		1219	{
		1220	int i;
		1221	AV *av;
		1222
		1223	grp->errorno = errno;
		1224
		1225	av = newAV ();
		1226	av_extend (av, items - 1);
		1227
		1228	for (i = 1; i < items; ++i )
		1229	av_push (av, newSVsv (ST (i)));
		1230
		1231	SvREFCNT_dec (grp->sv1);
		1232	grp->sv1 = (SV *)av;
		1233	}
		1234
		1235	void
		1236	errno (aio_req grp, int errorno = errno)
		1237	CODE:
		1238	grp->errorno = errorno;
		1239
		1240	void
		1241	limit (aio_req grp, int limit)
		1242	CODE:
		1243	eio_grp_limit (grp, limit);
		1244
		1245	void
		1246	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1247	CODE:
		1248	{
		1249	SvREFCNT_dec (grp->sv2);
		1250	grp->sv2 = newSVsv (callback);
		1251	grp->feed = aio_grp_feed;
		1252
		1253	if (grp->int2 <= 0)
		1254	grp->int2 = 2;
		1255
		1256	eio_grp_limit (grp, grp->int2);
		1257	}
		1258

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