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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.158 by root, Sat Jan 2 14:11:32 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
23		19
24	#if HAVE_SENDFILE	20	/* perl namespace pollution */
25	# if __linux	21	#undef VERSION
26	# include <sys/sendfile.h>	22
27	# elif __freebsd	23	#ifdef _WIN32
28	# include <sys/socket.h>	24
29	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	26	# undef malloc
31	# include <sys/socket.h>	27	# undef free
32	# elif __solaris /* not yet */	28
33	# include <sys/sendfile.h>	29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
34	# else	61	#else
35	# error sendfile support requested but not available	62
36	# endif	63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
37	#endif	70	#endif
38		71
39	/* number of seconds after which idle threads exit */	72	/* perl stupidly overrides readdir and maybe others */
40	#define IDLE_TIMEOUT 10	73	/* with thread-unsafe versions, imagine that :( */
		74	#undef readdir
		75	#undef opendir
		76	#undef closedir
41		77
42	/* used for struct dirent, AIX doesn't provide it */	78	#define EIO_STRUCT_STAT Stat_t
43	#ifndef NAME_MAX	79
44	# define NAME_MAX 4096	80	/* use NV for 32 bit perls as it allows larger offsets */
		81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
45	#endif	89	#endif
46		90
47	/* buffer size for various temporary buffers */	91	/*****************************************************************************/
48	#define AIO_BUFSIZE 65536
49		92
50	#define dBUF \	93	#if __GNUC__ >= 3
51	char *aio_buf; \	94	# define expect(expr,value) __builtin_expect ((expr),(value))
52	LOCK (wrklock); \	95	#else
53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	96	# define expect(expr,value) (expr)
54	UNLOCK (wrklock); \	97	#endif
55	if (!aio_buf) \	98
56	return -1;	99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
57		103
58	typedef SV SV8; /* byte-sv, used for argument-checking */	104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/eio.h"
		119
		120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
59		149
60	enum {	150	enum {
61	REQ_QUIT,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
62	REQ_OPEN, REQ_CLOSE,
63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
64	REQ_SENDFILE,
65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66	REQ_FSYNC, REQ_FDATASYNC,
67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68	REQ_MKNOD, REQ_READDIR,
69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70	REQ_GROUP, REQ_NOP,
71	REQ_BUSY,
72	};	152	};
73		153
74	#define AIO_REQ_KLASS "IO::AIO::REQ"	154	#include "libeio/eio.c"
75	#define AIO_GRP_KLASS "IO::AIO::GRP"
76		155
77	typedef struct aio_cb
78	{
79	struct aio_cb *volatile next;
80
81	SV *callback, *fh;
82	SV *sv1, *sv2;
83	void *ptr1, *ptr2;
84	off_t offs;
85	size_t size;
86	ssize_t result;
87
88	STRLEN stroffset;
89	int type;
90	int int1, int2;
91	int errorno;
92	mode_t mode; /* open */
93
94	unsigned char flags;
95	unsigned char pri;
96
97	SV *self; /* the perl counterpart of this request, if any */
98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
99	} aio_cb;
100
101	enum {
102	FLAG_CANCELLED = 0x01, /* request was cancelled */
103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105	};
106
107	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
108	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
109		158
110	enum {	159	static SV *on_next_submit;
111	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
112	PRI_MAX = 4,	161	static int max_outstanding;
113		162
114	DEFAULT_PRI = 0,	163	static s_epipe respipe;
115	PRI_BIAS = -PRI_MIN,
116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117	};
118		164
119	#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121	static unsigned int max_poll_time = 0;
122	static unsigned int max_poll_reqs = 0;
123
124	/* calculcate time difference in ~1/AIO_TICKS of a second */
125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126	{
127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
129	}
130
131	static thread_t main_tid;
132	static int main_sig;
133	static int block_sig_level;
134
135	void block_sig ()
136	{
137	sigset_t ss;
138
139	if (block_sig_level++)
140	return;
141
142	if (!main_sig)
143	return;
144
145	sigemptyset (&ss);
146	sigaddset (&ss, main_sig);
147	pthread_sigmask (SIG_BLOCK, &ss, 0);
148	}
149
150	void unblock_sig ()
151	{
152	sigset_t ss;
153
154	if (--block_sig_level)
155	return;
156
157	if (!main_sig)
158	return;
159
160	sigemptyset (&ss);
161	sigaddset (&ss, main_sig);
162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	/* worker threads management */
170	static mutex_t wrklock = MUTEX_INIT;
171
172	typedef struct worker {
173	/* locked by wrklock */
174	struct worker *prev, *next;
175
176	thread_t tid;
177
178	/* locked by reslock, reqlock or wrklock */
179	aio_req req; /* currently processed request */
180	void *dbuf;
181	DIR *dirp;
182	} worker;
183
184	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186	static void worker_clear (worker *wrk)
187	{
188	if (wrk->dirp)
189	{
190	closedir (wrk->dirp);
191	wrk->dirp = 0;
192	}
193
194	if (wrk->dbuf)
195	{
196	free (wrk->dbuf);
197	wrk->dbuf = 0;
198	}
199	}
200
201	static void worker_free (worker *wrk)
202	{
203	wrk->next->prev = wrk->prev;
204	wrk->prev->next = wrk->next;
205
206	free (wrk);
207	}
208
209	static volatile unsigned int nreqs, nready, npending;
210	static volatile unsigned int max_idle = 4;
211	static volatile unsigned int max_outstanding = 0xffffffff;
212	static int respipe [2];
213
214	static mutex_t reslock = MUTEX_INIT;
215	static mutex_t reqlock = MUTEX_INIT;
216	static cond_t reqwait = COND_INIT;
217
218	#if WORDACCESS_UNSAFE
219
220	static unsigned int get_nready ()
221	{
222	unsigned int retval;
223
224	LOCK (reqlock);
225	retval = nready;
226	UNLOCK (reqlock);
227
228	return retval;
229	}
230
231	static unsigned int get_npending ()
232	{
233	unsigned int retval;
234
235	LOCK (reslock);
236	retval = npending;
237	UNLOCK (reslock);
238
239	return retval;
240	}
241
242	static unsigned int get_nthreads ()
243	{
244	unsigned int retval;
245
246	LOCK (wrklock);
247	retval = started;
248	UNLOCK (wrklock);
249
250	return retval;
251	}
252
253	#else
254
255	# define get_nready() nready
256	# define get_npending() npending
257	# define get_nthreads() started
258
259	#endif
260
261	/*
262	* a somewhat faster data structure might be nice, but
263	* with 8 priorities this actually needs <20 insns
264	* per shift, the most expensive operation.
265	*/
266	typedef struct {
267	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268	int size;
269	} reqq;
270
271	static reqq req_queue;
272	static reqq res_queue;
273
274	int reqq_push (reqq *q, aio_req req)
275	{
276	int pri = req->pri;
277	req->next = 0;
278
279	if (q->qe[pri])
280	{
281	q->qe[pri]->next = req;
282	q->qe[pri] = req;
283	}
284	else
285	q->qe[pri] = q->qs[pri] = req;
286
287	return q->size++;
288	}
289
290	aio_req reqq_shift (reqq *q)
291	{
292	int pri;
293
294	if (!q->size)
295	return 0;
296
297	--q->size;
298
299	for (pri = NUM_PRI; pri--; )
300	{
301	aio_req req = q->qs[pri];
302
303	if (req)
304	{
305	if (!(q->qs[pri] = req->next))
306	q->qe[pri] = 0;
307
308	return req;
309	}
310	}
311
312	abort ();
313	}
314
315	static int poll_cb ();
316	static int req_invoke (aio_req req);
317	static void req_free (aio_req req);	165	static void req_destroy (aio_req req);
318	static void req_cancel (aio_req req);	166	static void req_cancel (aio_req req);
319		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	s_epipe_signal (&respipe);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	s_epipe_drain (&respipe);
		178	}
		179
320	/* must be called at most once */	180	/* must be called at most once */
321	static SV *req_sv (aio_req req, const char *klass)	181	static SV *req_sv (aio_req req, HV *stash)
322	{	182	{
323	if (!req->self)	183	if (!req->self)
324	{	184	{
325	req->self = (SV *)newHV ();	185	req->self = (SV *)newHV ();
326	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327	}	187	}
328		188
329	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330	}	190	}
331		191
332	static aio_req SvAIO_REQ (SV *sv)	192	static aio_req SvAIO_REQ (SV *sv)
333	{	193	{
334	MAGIC *mg;	194	MAGIC *mg;
335		195
336	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	196	if (!SvROK (sv)
		197	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		198	&& SvSTASH (SvRV (sv)) != aio_req_stash
		199	&& !sv_derived_from (sv, "IO::AIO::REQ")))
337	croak ("object of class " AIO_REQ_KLASS " expected");	200	croak ("object of class IO::AIO::REQ expected");
338		201
339	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340		203
341	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
342	}	205	}
343		206
344	static void aio_grp_feed (aio_req grp)	207	static void aio_grp_feed (aio_req grp)
345	{	208	{
346	block_sig ();	209	if (grp->sv2 && SvOK (grp->sv2))
347
348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349	{	210	{
350	int old_len = grp->size;
351
352	if (grp->sv2 && SvOK (grp->sv2))
353	{
354	dSP;	211	dSP;
355		212
356	ENTER;	213	ENTER;
357	SAVETMPS;	214	SAVETMPS;
358	PUSHMARK (SP);	215	PUSHMARK (SP);
359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	XPUSHs (req_sv (grp, aio_grp_stash));
360	PUTBACK;	217	PUTBACK;
361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362	SPAGAIN;	219	SPAGAIN;
363	FREETMPS;	220	FREETMPS;
364	LEAVE;	221	LEAVE;
365	}
366
367	/* stop if no progress has been made */
368	if (old_len == grp->size)
369	{
370	SvREFCNT_dec (grp->sv2);
371	grp->sv2 = 0;
372	break;
373	}
374	}	222	}
375
376	unblock_sig ();
377	}	223	}
378		224
379	static void aio_grp_dec (aio_req grp)	225	static void req_submit (eio_req *req)
380	{	226	{
381	--grp->size;	227	eio_submit (req);
382		228
383	/* call feeder, if applicable */	229	if (expect_false (on_next_submit))
384	aio_grp_feed (grp);
385
386	/* finish, if done */
387	if (!grp->size && grp->int1)
388	{	230	{
389	block_sig ();	231	dSP;
		232	SV *cb = sv_2mortal (on_next_submit);
390		233
391	if (!req_invoke (grp))	234	on_next_submit = 0;
392	{
393	req_free (grp);
394	unblock_sig ();
395	croak (0);
396	}
397		235
398	req_free (grp);	236	PUSHMARK (SP);
399	unblock_sig ();	237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
400	}	239	}
401	}	240	}
402		241
403	static int req_invoke (aio_req req)	242	static int req_invoke (eio_req *req)
404	{	243	{
405	dSP;	244	dSP;
406		245
407	if (req->flags & FLAG_SV1_RO_OFF)	246	if (req->flags & FLAG_SV2_RO_OFF)
408	SvREADONLY_off (req->sv1);	247	SvREADONLY_off (req->sv2);
409		248
410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	249	if (!EIO_CANCELLED (req) && req->callback)
411	{	250	{
412	ENTER;	251	ENTER;
413	SAVETMPS;	252	SAVETMPS;
414	PUSHMARK (SP);	253	PUSHMARK (SP);
415	EXTEND (SP, 1);	254	EXTEND (SP, 1);
416		255
417	switch (req->type)	256	switch (req->type)
418	{	257	{
419	case REQ_READDIR:	258	case EIO_READDIR:
420	{	259	{
421	SV *rv = &PL_sv_undef;	260	SV *rv = &PL_sv_undef;
422		261
423	if (req->result >= 0)	262	if (req->result >= 0)
424	{	263	{
425	int i;	264	int i;
426	char *buf = req->ptr2;	265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427	AV *av = newAV ();	267	AV *av = newAV ();
428		268
429	av_extend (av, req->result - 1);	269	av_extend (av, req->result - 1);
430		270
431	for (i = 0; i < req->result; ++i)	271	for (i = 0; i < req->result; ++i)
432	{	272	{
433	SV *sv = newSVpv (buf, 0);	273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434		276
		277	if (req->int1 & EIO_READDIR_CUSTOM2)
		278	{
		279	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		280	AV *avent = newAV ();
		281
		282	av_extend (avent, 2);
		283
		284	if (!sv_type [ent->type])
		285	{
		286	sv_type [ent->type] = newSViv (ent->type);
		287	SvREADONLY_on (sv_type [ent->type]);
		288	}
		289
		290	av_store (avent, 0, namesv);
		291	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		292	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		293
		294	av_store (av, i, newRV_noinc ((SV *)avent));
		295	}
		296	else
435	av_store (av, i, sv);	297	av_store (av, i, namesv);
		298
		299	++ent;
		300	}
		301	else
		302	{
		303	SV *name = newSVpv (names, 0);
		304	av_store (av, i, name);
436	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
		306	}
437	}	307	}
438		308
439	rv = sv_2mortal (newRV_noinc ((SV *)av));	309	rv = sv_2mortal (newRV_noinc ((SV *)av));
440	}	310	}
441		311
442	PUSHs (rv);	312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
443	}	316	}
444	break;	317	break;
445		318
446	case REQ_OPEN:	319	case EIO_OPEN:
447	{	320	{
448	/* convert fd to fh */	321	/* convert fd to fh */
449	SV *fh;	322	SV *fh = &PL_sv_undef;
450		323
451	PUSHs (sv_2mortal (newSViv (req->result)));	324	if (req->result >= 0)
452	PUTBACK;	325	{
453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	326	GV *gv = (GV *)sv_newmortal ();
454	SPAGAIN;	327	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		328	char sym [64];
		329	int symlen;
		330
		331	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		332	gv_init (gv, aio_stash, sym, symlen, 0);
455		333
456	fh = POPs;	334	symlen = snprintf (
457	PUSHMARK (SP);	335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
458	XPUSHs (fh);	346	PUSHs (fh);
459	}	347	}
460	break;	348	break;
461		349
462	case REQ_GROUP:	350	case EIO_GROUP:
463	req->int1 = 2; /* mark group as finished */	351	req->int1 = 2; /* mark group as finished */
464		352
465	if (req->sv1)	353	if (req->sv1)
466	{	354	{
467	int i;	355	int i;
…		…
471	for (i = 0; i <= AvFILL (av); ++i)	359	for (i = 0; i <= AvFILL (av); ++i)
472	PUSHs (*av_fetch (av, i, 0));	360	PUSHs (*av_fetch (av, i, 0));
473	}	361	}
474	break;	362	break;
475		363
476	case REQ_NOP:	364	case EIO_NOP:
477	case REQ_BUSY:	365	case EIO_BUSY:
478	break;	366	break;
479		367
480	case REQ_READLINK:	368	case EIO_READLINK:
481	if (req->result > 0)	369	if (req->result > 0)
482	{	370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
483	SvCUR_set (req->sv1, req->result);
484	*SvEND (req->sv1) = 0;
485	PUSHs (req->sv1);
486	}
487	break;	371	break;
488		372
489	case REQ_STAT:	373	case EIO_STAT:
490	case REQ_LSTAT:	374	case EIO_LSTAT:
491	case REQ_FSTAT:	375	case EIO_FSTAT:
492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
493	PL_laststatval = req->result;	377	PL_laststatval = req->result;
494	PL_statcache = *(Stat_t *)(req->ptr2);	378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
495	PUSHs (sv_2mortal (newSViv (req->result)));	379	PUSHs (sv_2mortal (newSViv (req->result)));
496	break;	380	break;
497		381
498	case REQ_READ:	382	case EIO_READ:
		383	{
499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
500	*SvEND (req->sv1) = 0;	385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
501	PUSHs (sv_2mortal (newSViv (req->result)));	388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
502	break;	390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
503		396
504	default:	397	default:
505	PUSHs (sv_2mortal (newSViv (req->result)));	398	PUSHs (sv_2mortal (newSViv (req->result)));
506	break;	399	break;
507	}	400	}
508		401
509	errno = req->errorno;	402	errno = req->errorno;
510		403
511	PUTBACK;	404	PUTBACK;
512	call_sv (req->callback, G_VOID | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513	SPAGAIN;	406	SPAGAIN;
514		407
515	FREETMPS;	408	FREETMPS;
516	LEAVE;	409	LEAVE;
		410
		411	PUTBACK;
517	}	412	}
518		413
519	if (req->grp)
520	{
521	aio_req grp = req->grp;
522
523	/* unlink request */
524	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527	if (grp->grp_first == req)
528	grp->grp_first = req->grp_next;
529
530	aio_grp_dec (grp);
531	}
532
533	return !SvTRUE (ERRSV);	414	return !!SvTRUE (ERRSV);
534	}	415	}
535		416
536	static void req_free (aio_req req)	417	static void req_destroy (aio_req req)
537	{	418	{
538	if (req->self)	419	if (req->self)
539	{	420	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	421	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	422	SvREFCNT_dec (req->self);
542	}	423	}
543		424
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	425	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	426	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
548		428
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	429	Safefree (req);
553	}	430	}
554		431
555	static void req_cancel_subs (aio_req grp)	432	static void req_cancel_subs (aio_req grp)
556	{	433	{
557	aio_req sub;	434	aio_req sub;
558		435
559	if (grp->type != REQ_GROUP)	436	if (grp->type != EIO_GROUP)
560	return;	437	return;
561		438
562	SvREFCNT_dec (grp->sv2);	439	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	440	grp->sv2 = 0;
564		441
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	442	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	443	}
568		444
569	static void req_cancel (aio_req req)	445	static void
		446	create_respipe (void)
570	{	447	{
571	req->flags |= FLAG_CANCELLED;	448	if (s_epipe_renew (&respipe))
572		449	croak ("IO::AIO: unable to initialize result pipe");
573	req_cancel_subs (req);
574	}	450	}
575		451
576	static void *aio_proc(void *arg);
577
578	static void start_thread (void)
579	{
580	worker *wrk = calloc (1, sizeof (worker));
581
582	if (!wrk)
583	croak ("unable to allocate worker thread data");
584
585	LOCK (wrklock);
586
587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
588	{
589	wrk->prev = &wrk_first;
590	wrk->next = wrk_first.next;
591	wrk_first.next->prev = wrk;
592	wrk_first.next = wrk;
593	++started;
594	}
595	else
596	free (wrk);
597
598	UNLOCK (wrklock);
599	}
600
601	static void maybe_start_thread ()
602	{
603	if (get_nthreads () >= wanted)
604	return;
605
606	/* todo: maybe use idle here, but might be less exact */
607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608	return;
609
610	start_thread ();
611	}
612
613	static void req_send (aio_req req)
614	{
615	block_sig ();
616
617	++nreqs;
618
619	LOCK (reqlock);
620	++nready;
621	reqq_push (&req_queue, req);
622	COND_SIGNAL (reqwait);
623	UNLOCK (reqlock);
624
625	unblock_sig ();
626
627	maybe_start_thread ();
628	}
629
630	static void end_thread (void)
631	{
632	aio_req req;
633
634	Newz (0, req, 1, aio_cb);
635
636	req->type = REQ_QUIT;
637	req->pri = PRI_MAX + PRI_BIAS;
638
639	LOCK (reqlock);
640	reqq_push (&req_queue, req);
641	COND_SIGNAL (reqwait);
642	UNLOCK (reqlock);
643
644	LOCK (wrklock);
645	--started;
646	UNLOCK (wrklock);
647	}
648
649	static void set_max_idle (int nthreads)
650	{
651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
652	max_idle = nthreads <= 0 ? 1 : nthreads;
653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654	}
655
656	static void min_parallel (int nthreads)
657	{
658	if (wanted < nthreads)
659	wanted = nthreads;
660	}
661
662	static void max_parallel (int nthreads)
663	{
664	if (wanted > nthreads)
665	wanted = nthreads;
666
667	while (started > wanted)
668	end_thread ();
669	}
670
671	static void poll_wait ()	452	static void poll_wait (void)
672	{	453	{
673	fd_set rfd;
674
675	while (nreqs)	454	while (eio_nreqs ())
676	{	455	{
677	int size;	456	int size;
678	if (WORDACCESS_UNSAFE) LOCK (reslock);	457
		458	X_LOCK (reslock);
679	size = res_queue.size;	459	size = res_queue.size;
680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	460	X_UNLOCK (reslock);
681		461
682	if (size)	462	if (size)
683	return;	463	return;
684		464
685	maybe_start_thread ();	465	etp_maybe_start_thread ();
686		466
687	FD_ZERO(&rfd);	467	s_epipe_wait (&respipe);
688	FD_SET(respipe [0], &rfd);
689
690	select (respipe [0] + 1, &rfd, 0, 0, 0);
691	}	468	}
692	}	469	}
693		470
694	static int poll_cb ()	471	static int poll_cb (void)
695	{	472	{
696	dSP;
697	int count = 0;
698	int maxreqs = max_poll_reqs;
699	int do_croak = 0;
700	struct timeval tv_start, tv_now;
701	aio_req req;
702
703	if (max_poll_time)
704	gettimeofday (&tv_start, 0);
705
706	block_sig ();
707
708	for (;;)	473	for (;;)
709	{	474	{
710	for (;;)	475	int res = eio_poll ();
711	{
712	maybe_start_thread ();
713		476
714	LOCK (reslock);	477	if (res > 0)
715	req = reqq_shift (&res_queue);
716
717	if (req)
718	{
719	--npending;
720
721	if (!res_queue.size)
722	{
723	/* read any signals sent by the worker threads */
724	char buf [4];
725	while (read (respipe [0], buf, 4) == 4)
726	;
727	}
728	}
729
730	UNLOCK (reslock);
731
732	if (!req)
733	break;
734
735	--nreqs;
736
737	if (req->type == REQ_GROUP && req->size)
738	{
739	req->int1 = 1; /* mark request as delayed */
740	continue;
741	}
742	else
743	{
744	if (!req_invoke (req))
745	{
746	req_free (req);
747	unblock_sig ();
748	croak (0);	478	croak (0);
749	}
750		479
751	count++;	480	if (!max_outstanding || max_outstanding > eio_nreqs ())
752	}	481	return res;
753
754	req_free (req);
755
756	if (maxreqs && !--maxreqs)
757	break;
758
759	if (max_poll_time)
760	{
761	gettimeofday (&tv_now, 0);
762
763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764	break;
765	}
766	}
767
768	if (nreqs <= max_outstanding)
769	break;
770		482
771	poll_wait ();	483	poll_wait ();
772
773	++maxreqs;
774	}	484	}
775
776	unblock_sig ();
777	return count;
778	}
779
780	static void create_pipe ()
781	{
782	if (pipe (respipe))
783	croak ("unable to initialize result pipe");
784
785	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
786	croak ("cannot set result pipe to nonblocking mode");
787
788	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790	}
791
792	/*****************************************************************************/
793	/* work around various missing functions */
794
795	#if !HAVE_PREADWRITE
796	# define pread aio_pread
797	# define pwrite aio_pwrite
798
799	/*
800	* make our pread/pwrite safe against themselves, but not against
801	* normal read/write by using a mutex. slows down execution a lot,
802	* but that's your problem, not mine.
803	*/
804	static mutex_t preadwritelock = MUTEX_INIT;
805
806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807	{
808	ssize_t res;
809	off_t ooffset;
810
811	LOCK (preadwritelock);
812	ooffset = lseek (fd, 0, SEEK_CUR);
813	lseek (fd, offset, SEEK_SET);
814	res = read (fd, buf, count);
815	lseek (fd, ooffset, SEEK_SET);
816	UNLOCK (preadwritelock);
817
818	return res;
819	}
820
821	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822	{
823	ssize_t res;
824	off_t ooffset;
825
826	LOCK (preadwritelock);
827	ooffset = lseek (fd, 0, SEEK_CUR);
828	lseek (fd, offset, SEEK_SET);
829	res = write (fd, buf, count);
830	lseek (fd, offset, SEEK_SET);
831	UNLOCK (preadwritelock);
832
833	return res;
834	}
835	#endif
836
837	#if !HAVE_FDATASYNC
838	# define fdatasync fsync
839	#endif
840
841	#if !HAVE_READAHEAD
842	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845	{
846	dBUF;
847
848	while (count > 0)
849	{
850	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852	pread (fd, aio_buf, len, offset);
853	offset += len;
854	count -= len;
855	}
856
857	errno = 0;
858	}
859
860	#endif
861
862	#if !HAVE_READDIR_R
863	# define readdir_r aio_readdir_r
864
865	static mutex_t readdirlock = MUTEX_INIT;
866
867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868	{
869	struct dirent *e;
870	int errorno;
871
872	LOCK (readdirlock);
873
874	e = readdir (dirp);
875	errorno = errno;
876
877	if (e)
878	{
879	*res = ent;
880	strcpy (ent->d_name, e->d_name);
881	}
882	else
883	*res = 0;
884
885	UNLOCK (readdirlock);
886
887	errno = errorno;
888	return e ? 0 : -1;
889	}
890	#endif
891
892	/* sendfile always needs emulation */
893	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894	{
895	ssize_t res;
896
897	if (!count)
898	return 0;
899
900	#if HAVE_SENDFILE
901	# if __linux
902	res = sendfile (ofd, ifd, &offset, count);
903
904	# elif __freebsd
905	/*
906	* Of course, the freebsd sendfile is a dire hack with no thoughts
907	* wasted on making it similar to other I/O functions.
908	*/
909	{
910	off_t sbytes;
911	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913	if (res < 0 && sbytes)
914	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915	res = sbytes;
916	}
917
918	# elif __hpux
919	res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921	# elif __solaris
922	{
923	struct sendfilevec vec;
924	size_t sbytes;
925
926	vec.sfv_fd = ifd;
927	vec.sfv_flag = 0;
928	vec.sfv_off = offset;
929	vec.sfv_len = count;
930
931	res = sendfilev (ofd, &vec, 1, &sbytes);
932
933	if (res < 0 && sbytes)
934	res = sbytes;
935	}
936
937	# endif
938	#else
939	res = -1;
940	errno = ENOSYS;
941	#endif
942
943	if (res < 0
944	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
945	#if __solaris
946	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
947	#endif
948	)
949	)
950	{
951	/* emulate sendfile. this is a major pain in the ass */
952	dBUF;
953
954	res = 0;
955
956	while (count)
957	{
958	ssize_t cnt;
959
960	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
961
962	if (cnt <= 0)
963	{
964	if (cnt && !res) res = -1;
965	break;
966	}
967
968	cnt = write (ofd, aio_buf, cnt);
969
970	if (cnt <= 0)
971	{
972	if (cnt && !res) res = -1;
973	break;
974	}
975
976	offset += cnt;
977	res += cnt;
978	count -= cnt;
979	}
980	}
981
982	return res;
983	}
984
985	/* read a full directory */
986	static void scandir_ (aio_req req, worker *self)
987	{
988	DIR *dirp;
989	union
990	{
991	struct dirent d;
992	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993	} *u;
994	struct dirent *entp;
995	char *name, *names;
996	int memlen = 4096;
997	int memofs = 0;
998	int res = 0;
999	int errorno;
1000
1001	LOCK (wrklock);
1002	self->dirp = dirp = opendir (req->ptr1);
1003	self->dbuf = u = malloc (sizeof (*u));
1004	req->flags |= FLAG_PTR2_FREE;
1005	req->ptr2 = names = malloc (memlen);
1006	UNLOCK (wrklock);
1007
1008	if (dirp && u && names)
1009	for (;;)
1010	{
1011	errno = 0;
1012	readdir_r (dirp, &u->d, &entp);
1013
1014	if (!entp)
1015	break;
1016
1017	name = entp->d_name;
1018
1019	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020	{
1021	int len = strlen (name) + 1;
1022
1023	res++;
1024
1025	while (memofs + len > memlen)
1026	{
1027	memlen *= 2;
1028	LOCK (wrklock);
1029	req->ptr2 = names = realloc (names, memlen);
1030	UNLOCK (wrklock);
1031
1032	if (!names)
1033	break;
1034	}
1035
1036	memcpy (names + memofs, name, len);
1037	memofs += len;
1038	}
1039	}
1040
1041	if (errno)
1042	res = -1;
1043
1044	req->result = res;
1045	}
1046
1047	/*****************************************************************************/
1048
1049	static void *aio_proc (void *thr_arg)
1050	{
1051	aio_req req;
1052	struct timespec ts;
1053	worker *self = (worker *)thr_arg;
1054
1055	/* try to distribute timeouts somewhat evenly */
1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057	* (1000000000UL / 1024UL);
1058
1059	for (;;)
1060	{
1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063	LOCK (reqlock);
1064
1065	for (;;)
1066	{
1067	self->req = req = reqq_shift (&req_queue);
1068
1069	if (req)
1070	break;
1071
1072	++idle;
1073
1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075	== ETIMEDOUT)
1076	{
1077	if (idle > max_idle)
1078	{
1079	--idle;
1080	UNLOCK (reqlock);
1081	LOCK (wrklock);
1082	--started;
1083	UNLOCK (wrklock);
1084	goto quit;
1085	}
1086
1087	/* we are allowed to idle, so do so without any timeout */
1088	COND_WAIT (reqwait, reqlock);
1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090	}
1091
1092	--idle;
1093	}
1094
1095	--nready;
1096
1097	UNLOCK (reqlock);
1098
1099	errno = 0; /* strictly unnecessary */
1100
1101	if (!(req->flags & FLAG_CANCELLED))
1102	switch (req->type)
1103	{
1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115	case REQ_CLOSE: req->result = close (req->int1); break;
1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
1127	case REQ_READDIR: scandir_ (req, self); break;
1128
1129	case REQ_BUSY:
1130	{
1131	struct timeval tv;
1132
1133	tv.tv_sec = req->int1;
1134	tv.tv_usec = req->int2;
1135
1136	req->result = select (0, 0, 0, 0, &tv);
1137	}
1138
1139	case REQ_GROUP:
1140	case REQ_NOP:
1141	break;
1142
1143	case REQ_QUIT:
1144	goto quit;
1145
1146	default:
1147	req->result = ENOSYS;
1148	break;
1149	}
1150
1151	req->errorno = errno;
1152
1153	LOCK (reslock);
1154
1155	++npending;
1156
1157	if (!reqq_push (&res_queue, req))
1158	{
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	/* optionally signal the main thread asynchronously */
1163	if (main_sig)
1164	pthread_kill (main_tid, main_sig);
1165	}
1166
1167	self->req = 0;
1168	worker_clear (self);
1169
1170	UNLOCK (reslock);
1171	}
1172
1173	quit:
1174	LOCK (wrklock);
1175	worker_free (self);
1176	UNLOCK (wrklock);
1177
1178	return 0;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	static void atfork_prepare (void)
1184	{
1185	LOCK (wrklock);
1186	LOCK (reqlock);
1187	LOCK (reslock);
1188	#if !HAVE_PREADWRITE
1189	LOCK (preadwritelock);
1190	#endif
1191	#if !HAVE_READDIR_R
1192	LOCK (readdirlock);
1193	#endif
1194	}
1195
1196	static void atfork_parent (void)
1197	{
1198	#if !HAVE_READDIR_R
1199	UNLOCK (readdirlock);
1200	#endif
1201	#if !HAVE_PREADWRITE
1202	UNLOCK (preadwritelock);
1203	#endif
1204	UNLOCK (reslock);
1205	UNLOCK (reqlock);
1206	UNLOCK (wrklock);
1207	}	485	}
1208		486
1209	static void atfork_child (void)	487	static void atfork_child (void)
1210	{	488	{
1211	aio_req prv;
1212
1213	while (prv = reqq_shift (&req_queue))
1214	req_free (prv);
1215
1216	while (prv = reqq_shift (&res_queue))
1217	req_free (prv);
1218
1219	while (wrk_first.next != &wrk_first)
1220	{
1221	worker *wrk = wrk_first.next;
1222
1223	if (wrk->req)
1224	req_free (wrk->req);
1225
1226	worker_clear (wrk);
1227	worker_free (wrk);
1228	}
1229
1230	started = 0;
1231	idle = 0;
1232	nreqs = 0;
1233	nready = 0;
1234	npending = 0;
1235
1236	close (respipe [0]);
1237	close (respipe [1]);
1238	create_pipe ();	489	create_respipe ();
		490	}
1239		491
1240	atfork_parent ();	492	static SV *
		493	get_cb (SV *cb_sv)
		494	{
		495	SvGETMAGIC (cb_sv);
		496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1241	}	497	}
1242		498
1243	#define dREQ \	499	#define dREQ \
		500	SV *cb_cv; \
1244	aio_req req; \	501	aio_req req; \
1245	int req_pri = next_pri; \	502	int req_pri = next_pri; \
1246	next_pri = DEFAULT_PRI + PRI_BIAS; \	503	next_pri = EIO_PRI_DEFAULT; \
1247	\	504	\
1248	if (SvOK (callback) && !SvROK (callback)) \	505	cb_cv = get_cb (callback); \
1249	croak ("callback must be undef or of reference type"); \
1250	\	506	\
1251	Newz (0, req, 1, aio_cb); \	507	Newz (0, req, 1, eio_req); \
1252	if (!req) \	508	if (!req) \
1253	croak ("out of memory during aio_req allocation"); \	509	croak ("out of memory during eio_req allocation"); \
1254	\	510	\
1255	req->callback = newSVsv (callback); \	511	req->callback = SvREFCNT_inc (cb_cv); \
1256	req->pri = req_pri	512	req->pri = req_pri
1257		513
1258	#define REQ_SEND \	514	#define REQ_SEND \
		515	PUTBACK; \
1259	req_send (req); \	516	req_submit (req); \
		517	SPAGAIN; \
1260	\	518	\
1261	if (GIMME_V != G_VOID) \	519	if (GIMME_V != G_VOID) \
1262	XPUSHs (req_sv (req, AIO_REQ_KLASS));	520	XPUSHs (req_sv (req, aio_req_stash));
1263		521
1264	MODULE = IO::AIO PACKAGE = IO::AIO	522	MODULE = IO::AIO PACKAGE = IO::AIO
1265		523
1266	PROTOTYPES: ENABLE	524	PROTOTYPES: ENABLE
1267		525
1268	BOOT:	526	BOOT:
1269	{	527	{
		528	static const struct {
		529	const char *name;
		530	IV iv;
		531	} *civ, const_iv[] = {
		532	# define const_iv(name, value) { # name, (IV) value },
		533	# define const_eio(name) { # name, (IV) EIO_ ## name },
		534	const_iv (EXDEV , EXDEV)
		535	const_iv (ENOSYS , ENOSYS)
		536	const_iv (O_RDONLY, O_RDONLY)
		537	const_iv (O_WRONLY, O_WRONLY)
		538	const_iv (O_CREAT , O_CREAT)
		539	const_iv (O_TRUNC , O_TRUNC)
		540	#ifndef _WIN32
		541	const_iv (S_IFIFO , S_IFIFO)
		542	#endif
		543	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		544	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		545	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		546	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		547	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		548	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		549
		550	const_eio (MS_ASYNC)
		551	const_eio (MS_INVALIDATE)
		552	const_eio (MS_SYNC)
		553
		554	const_eio (MT_MODIFY)
		555
		556	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		557	const_eio (SYNC_FILE_RANGE_WRITE)
		558	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		559
		560	const_eio (READDIR_DENTS)
		561	const_eio (READDIR_DIRS_FIRST)
		562	const_eio (READDIR_STAT_ORDER)
		563	const_eio (READDIR_FOUND_UNKNOWN)
		564
		565	const_eio (DT_UNKNOWN)
		566	const_eio (DT_FIFO)
		567	const_eio (DT_CHR)
		568	const_eio (DT_DIR)
		569	const_eio (DT_BLK)
		570	const_eio (DT_REG)
		571	const_eio (DT_LNK)
		572	const_eio (DT_SOCK)
		573	const_eio (DT_WHT)
		574	};
		575
1270	HV *stash = gv_stashpv ("IO::AIO", 1);	576	aio_stash = gv_stashpv ("IO::AIO" , 1);
		577	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		578	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1271		579
1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	580	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	581	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279		582
1280	create_pipe ();	583	create_respipe ();
1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);	584
		585	if (eio_init (want_poll, done_poll) < 0)
		586	croak ("IO::AIO: unable to initialise eio library");
		587
		588	/* atfork child called in fifo order, so before eio's handler */
		589	X_THREAD_ATFORK (0, 0, atfork_child);
1282	}	590	}
1283		591
1284	void	592	void
1285	max_poll_reqs (int nreqs)	593	max_poll_reqs (int nreqs)
1286	PROTOTYPE: $	594	PROTOTYPE: $
1287	CODE:	595	CODE:
1288	max_poll_reqs = nreqs;	596	eio_set_max_poll_reqs (nreqs);
1289		597
1290	void	598	void
1291	max_poll_time (double nseconds)	599	max_poll_time (double nseconds)
1292	PROTOTYPE: $	600	PROTOTYPE: $
1293	CODE:	601	CODE:
1294	max_poll_time = nseconds * AIO_TICKS;	602	eio_set_max_poll_time (nseconds);
1295		603
1296	void	604	void
1297	min_parallel (int nthreads)	605	min_parallel (int nthreads)
1298	PROTOTYPE: $	606	PROTOTYPE: $
		607	CODE:
		608	eio_set_min_parallel (nthreads);
1299		609
1300	void	610	void
1301	max_parallel (int nthreads)	611	max_parallel (int nthreads)
1302	PROTOTYPE: $	612	PROTOTYPE: $
		613	CODE:
		614	eio_set_max_parallel (nthreads);
1303		615
1304	void	616	void
1305	max_idle (int nthreads)	617	max_idle (int nthreads)
1306	PROTOTYPE: $	618	PROTOTYPE: $
1307	CODE:	619	CODE:
1308	set_max_idle (nthreads);	620	eio_set_max_idle (nthreads);
1309		621
1310	int	622	void
1311	max_outstanding (int maxreqs)	623	max_outstanding (int maxreqs)
1312	PROTOTYPE: $	624	PROTOTYPE: $
1313	CODE:	625	CODE:
1314	RETVAL = max_outstanding;
1315	max_outstanding = maxreqs;	626	max_outstanding = maxreqs;
1316	OUTPUT:
1317	RETVAL
1318		627
1319	void	628	void
1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	629	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1321	SV8 * pathname
1322	int flags
1323	int mode
1324	SV * callback
1325	PROTOTYPE: $$$;$	630	PROTOTYPE: $$$;$
1326	PPCODE:	631	PPCODE:
1327	{	632	{
1328	dREQ;	633	dREQ;
1329		634
1330	req->type = REQ_OPEN;	635	req->type = EIO_OPEN;
1331	req->sv1 = newSVsv (pathname);	636	req->sv1 = newSVsv (pathname);
1332	req->ptr1 = SvPVbyte_nolen (req->sv1);	637	req->ptr1 = SvPVbyte_nolen (req->sv1);
1333	req->int1 = flags;	638	req->int1 = flags;
1334	req->mode = mode;	639	req->int2 = mode;
1335		640
1336	REQ_SEND;	641	REQ_SEND;
1337	}	642	}
1338		643
1339	void	644	void
1340	aio_close (fh,callback=&PL_sv_undef)	645	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341	SV * fh
1342	SV * callback
1343	PROTOTYPE: $;$	646	PROTOTYPE: $;$
1344	ALIAS:	647	ALIAS:
1345	aio_close = REQ_CLOSE
1346	aio_fsync = REQ_FSYNC	648	aio_fsync = EIO_FSYNC
1347	aio_fdatasync = REQ_FDATASYNC	649	aio_fdatasync = EIO_FDATASYNC
1348	PPCODE:	650	PPCODE:
1349	{	651	{
		652	int fd = s_fileno_croak (fh, 0);
1350	dREQ;	653	dREQ;
1351		654
1352	req->type = ix;	655	req->type = ix;
1353	req->fh = newSVsv (fh);	656	req->sv1 = newSVsv (fh);
1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	657	req->int1 = fd;
1355		658
1356	REQ_SEND (req);	659	REQ_SEND (req);
1357	}	660	}
1358		661
1359	void	662	void
		663	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		664	PROTOTYPE: $$$$;$
		665	PPCODE:
		666	{
		667	int fd = s_fileno_croak (fh, 0);
		668	dREQ;
		669
		670	req->type = EIO_SYNC_FILE_RANGE;
		671	req->sv1 = newSVsv (fh);
		672	req->int1 = fd;
		673	req->offs = offset;
		674	req->size = nbytes;
		675	req->int2 = flags;
		676
		677	REQ_SEND (req);
		678	}
		679
		680	void
		681	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		682	PROTOTYPE: $;$
		683	PPCODE:
		684	{
		685	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		686	int fd = s_fileno_croak (fh, 0);
		687	dREQ;
		688
		689	if (close_pipe < 0)
		690	{
		691	int pipefd [2];
		692
		693	if (pipe (pipefd) < 0
		694	|| close (pipefd [1]) < 0
		695	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		696	abort (); /*D*/
		697
		698	close_pipe = pipefd [0];
		699	}
		700
		701	req->type = EIO_DUP2;
		702	req->int1 = close_pipe;
		703	req->sv2 = newSVsv (fh);
		704	req->int2 = fd;
		705
		706	REQ_SEND (req);
		707	}
		708
		709	void
1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	710	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1361	SV * fh
1362	UV offset
1363	UV length
1364	SV8 * data
1365	UV dataoffset
1366	SV * callback
1367	ALIAS:	711	ALIAS:
1368	aio_read = REQ_READ	712	aio_read = EIO_READ
1369	aio_write = REQ_WRITE	713	aio_write = EIO_WRITE
1370	PROTOTYPE: $$$$$;$	714	PROTOTYPE: $$$$$;$
1371	PPCODE:	715	PPCODE:
1372	{	716	{
1373	STRLEN svlen;	717	STRLEN svlen;
		718	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374	char *svptr = SvPVbyte (data, svlen);	719	char *svptr = SvPVbyte (data, svlen);
1375		720	UV len = SvUV (length);
1376	SvUPGRADE (data, SVt_PV);
1377	SvPOK_on (data);
1378		721
1379	if (dataoffset < 0)	722	if (dataoffset < 0)
1380	dataoffset += svlen;	723	dataoffset += svlen;
1381		724
1382	if (dataoffset < 0 || dataoffset > svlen)	725	if (dataoffset < 0 || dataoffset > svlen)
1383	croak ("data offset outside of string");	726	croak ("dataoffset outside of data scalar");
1384		727
1385	if (ix == REQ_WRITE)	728	if (ix == EIO_WRITE)
1386	{	729	{
1387	/* write: check length and adjust. */	730	/* write: check length and adjust. */
1388	if (length < 0 || length + dataoffset > svlen)	731	if (!SvOK (length) || len + dataoffset > svlen)
1389	length = svlen - dataoffset;	732	len = svlen - dataoffset;
1390	}	733	}
1391	else	734	else
1392	{	735	{
1393	/* read: grow scalar as necessary */	736	/* read: check type and grow scalar as necessary */
		737	SvUPGRADE (data, SVt_PV);
1394	svptr = SvGROW (data, length + dataoffset + 1);	738	svptr = SvGROW (data, len + dataoffset + 1);
1395	}	739	}
1396
1397	if (length < 0)
1398	croak ("length must not be negative");
1399		740
1400	{	741	{
1401	dREQ;	742	dREQ;
1402		743
1403	req->type = ix;	744	req->type = ix;
1404	req->fh = newSVsv (fh);	745	req->sv1 = newSVsv (fh);
1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	746	req->int1 = fd;
1406	: IoOFP (sv_2io (fh)));	747	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407	req->offs = offset;
1408	req->size = length;	748	req->size = len;
1409	req->sv1 = SvREFCNT_inc (data);	749	req->sv2 = SvREFCNT_inc (data);
1410	req->ptr1 = (char *)svptr + dataoffset;	750	req->ptr2 = (char *)svptr + dataoffset;
1411	req->stroffset = dataoffset;	751	req->stroffset = dataoffset;
1412		752
1413	if (!SvREADONLY (data))	753	if (!SvREADONLY (data))
1414	{	754	{
1415	SvREADONLY_on (data);	755	SvREADONLY_on (data);
1416	req->flags |= FLAG_SV1_RO_OFF;	756	req->flags |= FLAG_SV2_RO_OFF;
1417	}	757	}
1418		758
1419	REQ_SEND;	759	REQ_SEND;
1420	}	760	}
1421	}	761	}
1422		762
1423	void	763	void
1424	aio_readlink (path,callback=&PL_sv_undef)	764	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1425	SV8 * path
1426	SV * callback
1427	PROTOTYPE: $$;$	765	PROTOTYPE: $$;$
1428	PPCODE:	766	PPCODE:
1429	{	767	{
1430	SV *data;	768	SV *data;
1431	dREQ;	769	dREQ;
1432		770
1433	data = newSV (NAME_MAX);
1434	SvPOK_on (data);
1435
1436	req->type = REQ_READLINK;	771	req->type = EIO_READLINK;
1437	req->fh = newSVsv (path);	772	req->sv1 = newSVsv (path);
1438	req->ptr2 = SvPVbyte_nolen (req->fh);	773	req->ptr1 = SvPVbyte_nolen (req->sv1);
1439	req->sv1 = data;
1440	req->ptr1 = SvPVbyte_nolen (data);
1441		774
1442	REQ_SEND;	775	REQ_SEND;
1443	}	776	}
1444		777
1445	void	778	void
1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	779	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1447	SV * out_fh
1448	SV * in_fh
1449	UV in_offset
1450	UV length
1451	SV * callback
1452	PROTOTYPE: $$$$;$	780	PROTOTYPE: $$$$;$
1453	PPCODE:	781	PPCODE:
1454	{	782	{
		783	int ifd = s_fileno_croak (in_fh , 0);
		784	int ofd = s_fileno_croak (out_fh, 1);
1455	dREQ;	785	dREQ;
1456		786
1457	req->type = REQ_SENDFILE;	787	req->type = EIO_SENDFILE;
1458	req->fh = newSVsv (out_fh);	788	req->sv1 = newSVsv (out_fh);
1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	789	req->int1 = ofd;
1460	req->sv2 = newSVsv (in_fh);	790	req->sv2 = newSVsv (in_fh);
1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	791	req->int2 = ifd;
1462	req->offs = in_offset;	792	req->offs = in_offset;
1463	req->size = length;	793	req->size = length;
1464		794
1465	REQ_SEND;	795	REQ_SEND;
1466	}	796	}
1467		797
1468	void	798	void
1469	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	799	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470	SV * fh
1471	UV offset
1472	IV length
1473	SV * callback
1474	PROTOTYPE: $$$;$	800	PROTOTYPE: $$$;$
1475	PPCODE:	801	PPCODE:
1476	{	802	{
		803	int fd = s_fileno_croak (fh, 0);
1477	dREQ;	804	dREQ;
1478		805
1479	req->type = REQ_READAHEAD;	806	req->type = EIO_READAHEAD;
1480	req->fh = newSVsv (fh);	807	req->sv1 = newSVsv (fh);
1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	808	req->int1 = fd;
1482	req->offs = offset;	809	req->offs = offset;
1483	req->size = length;	810	req->size = length;
1484		811
1485	REQ_SEND;	812	REQ_SEND;
1486	}	813	}
1487		814
1488	void	815	void
1489	aio_stat (fh_or_path,callback=&PL_sv_undef)	816	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490	SV8 * fh_or_path
1491	SV * callback
1492	ALIAS:	817	ALIAS:
1493	aio_stat = REQ_STAT	818	aio_stat = EIO_STAT
1494	aio_lstat = REQ_LSTAT	819	aio_lstat = EIO_LSTAT
1495	PPCODE:	820	PPCODE:
1496	{	821	{
1497	dREQ;	822	dREQ;
1498		823
1499	req->ptr2 = malloc (sizeof (Stat_t));	824	req->sv1 = newSVsv (fh_or_path);
1500	if (!req->ptr2)
1501	{
1502	req_free (req);
1503	croak ("out of memory during aio_stat statdata allocation");
1504	}
1505		825
1506	req->flags |= FLAG_PTR2_FREE;	826	if (SvPOK (req->sv1))
1507
1508	if (SvPOK (fh_or_path))
1509	{	827	{
1510	req->type = ix;	828	req->type = ix;
1511	req->sv1 = newSVsv (fh_or_path);
1512	req->ptr1 = SvPVbyte_nolen (req->sv1);	829	req->ptr1 = SvPVbyte_nolen (req->sv1);
1513	}	830	}
1514	else	831	else
1515	{	832	{
1516	req->type = REQ_FSTAT;	833	req->type = EIO_FSTAT;
1517	req->fh = newSVsv (fh_or_path);
1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	834	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519	}	835	}
1520		836
1521	REQ_SEND;	837	REQ_SEND;
1522	}	838	}
1523		839
1524	void	840	void
		841	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		842	PPCODE:
		843	{
		844	dREQ;
		845
		846	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		847	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		848	req->sv1 = newSVsv (fh_or_path);
		849
		850	if (SvPOK (req->sv1))
		851	{
		852	req->type = EIO_UTIME;
		853	req->ptr1 = SvPVbyte_nolen (req->sv1);
		854	}
		855	else
		856	{
		857	req->type = EIO_FUTIME;
		858	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		859	}
		860
		861	REQ_SEND;
		862	}
		863
		864	void
		865	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		866	PPCODE:
		867	{
		868	dREQ;
		869
		870	req->sv1 = newSVsv (fh_or_path);
		871	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		872
		873	if (SvPOK (req->sv1))
		874	{
		875	req->type = EIO_TRUNCATE;
		876	req->ptr1 = SvPVbyte_nolen (req->sv1);
		877	}
		878	else
		879	{
		880	req->type = EIO_FTRUNCATE;
		881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		882	}
		883
		884	REQ_SEND;
		885	}
		886
		887	void
		888	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		889	ALIAS:
		890	aio_chmod = EIO_CHMOD
		891	aio_mkdir = EIO_MKDIR
		892	PPCODE:
		893	{
		894	dREQ;
		895
		896	req->int2 = mode;
		897	req->sv1 = newSVsv (fh_or_path);
		898
		899	if (SvPOK (req->sv1))
		900	{
		901	req->type = ix;
		902	req->ptr1 = SvPVbyte_nolen (req->sv1);
		903	}
		904	else
		905	{
		906	req->type = EIO_FCHMOD;
		907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		908	}
		909
		910	REQ_SEND;
		911	}
		912
		913	void
		914	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		915	PPCODE:
		916	{
		917	dREQ;
		918
		919	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		920	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		921	req->sv1 = newSVsv (fh_or_path);
		922
		923	if (SvPOK (req->sv1))
		924	{
		925	req->type = EIO_CHOWN;
		926	req->ptr1 = SvPVbyte_nolen (req->sv1);
		927	}
		928	else
		929	{
		930	req->type = EIO_FCHOWN;
		931	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		932	}
		933
		934	REQ_SEND;
		935	}
		936
		937	void
		938	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		939	PPCODE:
		940	{
		941	dREQ;
		942
		943	req->type = EIO_READDIR;
		944	req->sv1 = newSVsv (pathname);
		945	req->ptr1 = SvPVbyte_nolen (req->sv1);
		946	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		947
		948	if (flags & EIO_READDIR_DENTS)
		949	req->int1 |= EIO_READDIR_CUSTOM2;
		950
		951	REQ_SEND;
		952	}
		953
		954	void
1525	aio_unlink (pathname,callback=&PL_sv_undef)	955	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526	SV8 * pathname
1527	SV * callback
1528	ALIAS:	956	ALIAS:
1529	aio_unlink = REQ_UNLINK	957	aio_unlink = EIO_UNLINK
1530	aio_rmdir = REQ_RMDIR	958	aio_rmdir = EIO_RMDIR
1531	aio_readdir = REQ_READDIR	959	aio_readdir = EIO_READDIR
1532	PPCODE:	960	PPCODE:
1533	{	961	{
1534	dREQ;	962	dREQ;
1535		963
1536	req->type = ix;	964	req->type = ix;
…		…
1539		967
1540	REQ_SEND;	968	REQ_SEND;
1541	}	969	}
1542		970
1543	void	971	void
1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)	972	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1545	SV8 * pathname	973	ALIAS:
1546	UV mode	974	aio_link = EIO_LINK
1547	SV * callback	975	aio_symlink = EIO_SYMLINK
		976	aio_rename = EIO_RENAME
1548	PPCODE:	977	PPCODE:
1549	{	978	{
1550	dREQ;	979	dREQ;
1551		980
		981	req->type = ix;
		982	req->sv1 = newSVsv (oldpath);
		983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984	req->sv2 = newSVsv (newpath);
		985	req->ptr2 = SvPVbyte_nolen (req->sv2);
		986
		987	REQ_SEND;
		988	}
		989
		990	void
		991	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		992	PPCODE:
		993	{
		994	dREQ;
		995
1552	req->type = REQ_MKDIR;	996	req->type = EIO_MKNOD;
1553	req->sv1 = newSVsv (pathname);	997	req->sv1 = newSVsv (pathname);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);	998	req->ptr1 = SvPVbyte_nolen (req->sv1);
1555	req->mode = mode;
1556
1557	REQ_SEND;
1558	}
1559
1560	void
1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1562	SV8 * oldpath
1563	SV8 * newpath
1564	SV * callback
1565	ALIAS:
1566	aio_link = REQ_LINK
1567	aio_symlink = REQ_SYMLINK
1568	aio_rename = REQ_RENAME
1569	PPCODE:
1570	{
1571	dREQ;
1572
1573	req->type = ix;
1574	req->fh = newSVsv (oldpath);
1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1576	req->sv1 = newSVsv (newpath);
1577	req->ptr1 = SvPVbyte_nolen (req->sv1);
1578
1579	REQ_SEND;
1580	}
1581
1582	void
1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1584	SV8 * pathname
1585	UV mode
1586	UV dev
1587	SV * callback
1588	PPCODE:
1589	{
1590	dREQ;
1591
1592	req->type = REQ_MKNOD;
1593	req->sv1 = newSVsv (pathname);
1594	req->ptr1 = SvPVbyte_nolen (req->sv1);
1595	req->mode = (mode_t)mode;	999	req->int2 = (mode_t)mode;
1596	req->offs = dev;	1000	req->offs = dev;
1597		1001
1598	REQ_SEND;	1002	REQ_SEND;
1599	}	1003	}
1600		1004
1601	void	1005	void
		1006	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1007	ALIAS:
		1008	aio_mtouch = EIO_MTOUCH
		1009	aio_msync = EIO_MSYNC
		1010	PROTOTYPE: $$$$;$
		1011	PPCODE:
		1012	{
		1013	STRLEN svlen;
		1014	UV len = SvUV (length);
		1015	char *svptr = SvPVbyte (data, svlen);
		1016
		1017	if (offset < 0)
		1018	offset += svlen;
		1019
		1020	if (offset < 0 || offset > svlen)
		1021	croak ("offset outside of scalar");
		1022
		1023	if (!SvOK (length) || len + offset > svlen)
		1024	len = svlen - offset;
		1025
		1026	{
		1027	dREQ;
		1028
		1029	req->type = ix;
		1030	req->size = len;
		1031	req->sv2 = SvREFCNT_inc (data);
		1032	req->ptr2 = (char *)svptr + offset;
		1033	req->int1 = flags;
		1034
		1035	REQ_SEND;
		1036	}
		1037	}
		1038
		1039	void
1602	aio_busy (delay,callback=&PL_sv_undef)	1040	aio_busy (double delay, SV *callback=&PL_sv_undef)
1603	double delay
1604	SV * callback
1605	PPCODE:	1041	PPCODE:
1606	{	1042	{
1607	dREQ;	1043	dREQ;
1608		1044
1609	req->type = REQ_BUSY;	1045	req->type = EIO_BUSY;
1610	req->int1 = delay < 0. ? 0 : delay;	1046	req->nv1 = delay < 0. ? 0. : delay;
1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612		1047
1613	REQ_SEND;	1048	REQ_SEND;
1614	}	1049	}
1615		1050
1616	void	1051	void
1617	aio_group (callback=&PL_sv_undef)	1052	aio_group (SV *callback=&PL_sv_undef)
1618	SV * callback
1619	PROTOTYPE: ;$	1053	PROTOTYPE: ;$
1620	PPCODE:	1054	PPCODE:
1621	{	1055	{
1622	dREQ;	1056	dREQ;
1623		1057
1624	req->type = REQ_GROUP;	1058	req->type = EIO_GROUP;
1625		1059
1626	req_send (req);	1060	req_submit (req);
1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1061	XPUSHs (req_sv (req, aio_grp_stash));
1628	}	1062	}
1629		1063
1630	void	1064	void
1631	aio_nop (callback=&PL_sv_undef)	1065	aio_nop (SV *callback=&PL_sv_undef)
1632	SV * callback	1066	ALIAS:
		1067	aio_nop = EIO_NOP
		1068	aio_sync = EIO_SYNC
1633	PPCODE:	1069	PPCODE:
1634	{	1070	{
1635	dREQ;	1071	dREQ;
1636		1072
1637	req->type = REQ_NOP;	1073	req->type = ix;
1638		1074
1639	REQ_SEND;	1075	REQ_SEND;
1640	}	1076	}
1641		1077
1642	int	1078	int
1643	aioreq_pri (int pri = 0)	1079	aioreq_pri (int pri = 0)
1644	PROTOTYPE: ;$	1080	PROTOTYPE: ;$
1645	CODE:	1081	CODE:
1646	RETVAL = next_pri - PRI_BIAS;	1082	RETVAL = next_pri;
1647	if (items > 0)	1083	if (items > 0)
1648	{	1084	{
1649	if (pri < PRI_MIN) pri = PRI_MIN;	1085	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650	if (pri > PRI_MAX) pri = PRI_MAX;	1086	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651	next_pri = pri + PRI_BIAS;	1087	next_pri = pri;
1652	}	1088	}
1653	OUTPUT:	1089	OUTPUT:
1654	RETVAL	1090	RETVAL
1655		1091
1656	void	1092	void
1657	aioreq_nice (int nice = 0)	1093	aioreq_nice (int nice = 0)
1658	CODE:	1094	CODE:
1659	nice = next_pri - nice;	1095	nice = next_pri - nice;
1660	if (nice < PRI_MIN) nice = PRI_MIN;	1096	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661	if (nice > PRI_MAX) nice = PRI_MAX;	1097	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662	next_pri = nice + PRI_BIAS;	1098	next_pri = nice;
1663		1099
1664	void	1100	void
1665	flush ()	1101	flush ()
1666	PROTOTYPE:	1102	PROTOTYPE:
1667	CODE:	1103	CODE:
1668	while (nreqs)	1104	while (eio_nreqs ())
1669	{	1105	{
1670	poll_wait ();	1106	poll_wait ();
1671	poll_cb ();	1107	poll_cb ();
1672	}	1108	}
1673		1109
…		…
1682		1118
1683	int	1119	int
1684	poll_fileno()	1120	poll_fileno()
1685	PROTOTYPE:	1121	PROTOTYPE:
1686	CODE:	1122	CODE:
1687	RETVAL = respipe [0];	1123	RETVAL = s_epipe_fd (&respipe);
1688	OUTPUT:	1124	OUTPUT:
1689	RETVAL	1125	RETVAL
1690		1126
1691	int	1127	int
1692	poll_cb(...)	1128	poll_cb(...)
…		…
1700	poll_wait()	1136	poll_wait()
1701	PROTOTYPE:	1137	PROTOTYPE:
1702	CODE:	1138	CODE:
1703	poll_wait ();	1139	poll_wait ();
1704		1140
1705	void
1706	setsig (int signum = SIGIO)
1707	PROTOTYPE: ;$
1708	CODE:
1709	{
1710	if (block_sig_level)
1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713	LOCK (reslock);
1714	main_tid = pthread_self ();
1715	main_sig = signum;
1716	UNLOCK (reslock);
1717
1718	if (main_sig && npending)
1719	pthread_kill (main_tid, main_sig);
1720	}
1721
1722	void
1723	aio_block (SV *cb)
1724	PROTOTYPE: &
1725	PPCODE:
1726	{
1727	int count;
1728
1729	block_sig ();
1730	PUSHMARK (SP);
1731	PUTBACK;
1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733	SPAGAIN;
1734	unblock_sig ();
1735
1736	if (SvTRUE (ERRSV))
1737	croak (0);
1738
1739	XSRETURN (count);
1740	}
1741
1742	int	1141	int
1743	nreqs()	1142	nreqs()
1744	PROTOTYPE:	1143	PROTOTYPE:
1745	CODE:	1144	CODE:
1746	RETVAL = nreqs;	1145	RETVAL = eio_nreqs ();
1747	OUTPUT:	1146	OUTPUT:
1748	RETVAL	1147	RETVAL
1749		1148
1750	int	1149	int
1751	nready()	1150	nready()
1752	PROTOTYPE:	1151	PROTOTYPE:
1753	CODE:	1152	CODE:
1754	RETVAL = get_nready ();	1153	RETVAL = eio_nready ();
1755	OUTPUT:	1154	OUTPUT:
1756	RETVAL	1155	RETVAL
1757		1156
1758	int	1157	int
1759	npending()	1158	npending()
1760	PROTOTYPE:	1159	PROTOTYPE:
1761	CODE:	1160	CODE:
1762	RETVAL = get_npending ();	1161	RETVAL = eio_npending ();
1763	OUTPUT:	1162	OUTPUT:
1764	RETVAL	1163	RETVAL
1765		1164
1766	int	1165	int
1767	nthreads()	1166	nthreads()
1768	PROTOTYPE:	1167	PROTOTYPE:
1769	CODE:	1168	CODE:
1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1169	RETVAL = eio_nthreads ();
1771	RETVAL = started;
1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773	OUTPUT:	1170	OUTPUT:
1774	RETVAL	1171	RETVAL
1775		1172
		1173	int
		1174	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1175	PROTOTYPE: $$$$
		1176	CODE:
		1177	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1178	RETVAL = posix_fadvise (fh, offset, length, advice);
		1179	#else
		1180	RETVAL = errno = ENOSYS;
		1181	#endif
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	ssize_t
		1186	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1190	OUTPUT:
		1191	RETVAL
		1192
		1193	void _on_next_submit (SV *cb)
		1194	CODE:
		1195	SvREFCNT_dec (on_next_submit);
		1196	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1197
1776	PROTOTYPES: DISABLE	1198	PROTOTYPES: DISABLE
1777		1199
1778	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1200	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779		1201
1780	void	1202	void
1781	cancel (aio_req_ornot req)	1203	cancel (aio_req_ornot req)
1782	CODE:	1204	CODE:
1783	req_cancel (req);	1205	eio_cancel (req);
1784		1206
1785	void	1207	void
1786	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1208	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787	CODE:	1209	PPCODE:
		1210	{
		1211	if (GIMME_V != G_VOID)
		1212	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1213
		1214	if (items > 1)
		1215	{
		1216	SV *cb_cv =get_cb (callback);
		1217
1788	SvREFCNT_dec (req->callback);	1218	SvREFCNT_dec (req->callback);
1789	req->callback = newSVsv (callback);	1219	req->callback = SvREFCNT_inc (cb_cv);
		1220	}
		1221	}
1790		1222
1791	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1223	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792		1224
1793	void	1225	void
1794	add (aio_req grp, ...)	1226	add (aio_req grp, ...)
1795	PPCODE:	1227	PPCODE:
1796	{	1228	{
1797	int i;	1229	int i;
1798	aio_req req;
1799
1800	if (main_sig && !block_sig_level)
1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802		1230
1803	if (grp->int1 == 2)	1231	if (grp->int1 == 2)
1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1232	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805		1233
1806	for (i = 1; i < items; ++i )	1234	for (i = 1; i < items; ++i )
1807	{	1235	{
		1236	aio_req req;
		1237
1808	if (GIMME_V != G_VOID)	1238	if (GIMME_V != G_VOID)
1809	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810		1240
1811	req = SvAIO_REQ (ST (i));	1241	req = SvAIO_REQ (ST (i));
1812		1242
1813	if (req)	1243	if (req)
1814	{	1244	eio_grp_add (grp, req);
1815	++grp->size;
1816	req->grp = grp;
1817
1818	req->grp_prev = 0;
1819	req->grp_next = grp->grp_first;
1820
1821	if (grp->grp_first)
1822	grp->grp_first->grp_prev = req;
1823
1824	grp->grp_first = req;
1825	}
1826	}	1245	}
1827	}	1246	}
1828		1247
1829	void	1248	void
1830	cancel_subs (aio_req_ornot req)	1249	cancel_subs (aio_req_ornot req)
…		…
1839	AV *av;	1258	AV *av;
1840		1259
1841	grp->errorno = errno;	1260	grp->errorno = errno;
1842		1261
1843	av = newAV ();	1262	av = newAV ();
		1263	av_extend (av, items - 1);
1844		1264
1845	for (i = 1; i < items; ++i )	1265	for (i = 1; i < items; ++i )
1846	av_push (av, newSVsv (ST (i)));	1266	av_push (av, newSVsv (ST (i)));
1847		1267
1848	SvREFCNT_dec (grp->sv1);	1268	SvREFCNT_dec (grp->sv1);
…		…
1855	grp->errorno = errorno;	1275	grp->errorno = errorno;
1856		1276
1857	void	1277	void
1858	limit (aio_req grp, int limit)	1278	limit (aio_req grp, int limit)
1859	CODE:	1279	CODE:
1860	grp->int2 = limit;	1280	eio_grp_limit (grp, limit);
1861	aio_grp_feed (grp);
1862		1281
1863	void	1282	void
1864	feed (aio_req grp, SV *callback=&PL_sv_undef)	1283	feed (aio_req grp, SV *callback=&PL_sv_undef)
1865	CODE:	1284	CODE:
1866	{	1285	{
1867	SvREFCNT_dec (grp->sv2);	1286	SvREFCNT_dec (grp->sv2);
1868	grp->sv2 = newSVsv (callback);	1287	grp->sv2 = newSVsv (callback);
		1288	grp->feed = aio_grp_feed;
1869		1289
1870	if (grp->int2 <= 0)	1290	if (grp->int2 <= 0)
1871	grp->int2 = 2;	1291	grp->int2 = 2;
1872		1292
1873	aio_grp_feed (grp);	1293	eio_grp_limit (grp, grp->int2);
1874	}	1294	}
1875		1295

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