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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.85 by root, Sat Oct 28 23:32:29 2006 UTC vs.
Revision 1.157 by root, Sat Jan 2 12:58:37 2010 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"	9	#include "schmorp.h"
18
19	#include <pthread.h>
20		10
21	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
22	#include <errno.h>	13	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	14	#include <sys/types.h>
26	#include <sys/stat.h>	15	#include <sys/stat.h>
27	#include <limits.h>	16	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	17	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	18	#include <sched.h>
32		19
33	#if HAVE_SENDFILE	20	/* perl namespace pollution */
34	# if __linux	21	#undef VERSION
35	# include <sys/sendfile.h>	22
36	# elif __freebsd	23	#ifdef _WIN32
37	# include <sys/socket.h>	24
38	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	26	# undef malloc
40	# include <sys/socket.h>	27	# undef free
41	# elif __solaris /* not yet */	28
42	# 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
43	# else	61	#else
44	# error sendfile support requested but not available	62
45	# 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
46	#endif	70	#endif
47		71
48	/* number of seconds after which idle threads exit */	72	/* perl stupidly overrides readdir and maybe others */
49	#define IDLE_TIMEOUT 10	73	/* with thread-unsafe versions, imagine that :( */
		74	#undef readdir
		75	#undef opendir
		76	#undef closedir
50		77
51	/* used for struct dirent, AIX doesn't provide it */	78	#define EIO_STRUCT_STAT Stat_t
52	#ifndef NAME_MAX	79
53	# 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
54	#endif	89	#endif
55		90
56	#ifndef PTHREAD_STACK_MIN	91	/*****************************************************************************/
57	/* care for broken platforms, e.g. windows */	92
58	# define PTHREAD_STACK_MIN 16384	93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
59	#endif	97	#endif
60		98
61	#if __ia64	99	#define expect_false(expr) expect ((expr) != 0, 0)
62	# define STACKSIZE 65536	100	#define expect_true(expr) expect ((expr) != 0, 1)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */	101
64	# define STACKSIZE PTHREAD_STACK_MIN	102	/*****************************************************************************/
65	#else	103
66	# define STACKSIZE 16384	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
67	#endif	123	#endif
68		124
69	/* wether word reads are potentially non-atomic.	125	#ifndef POSIX_FADV_SEQUENTIAL
70	* this is conservatice, likely most arches this runs	126	# define POSIX_FADV_SEQUENTIAL 0
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif
79	#endif	127	#endif
80		128
81	/* buffer size for various temporary buffers */	129	#ifndef POSIX_FADV_RANDOM
82	#define AIO_BUFSIZE 65536	130	# define POSIX_FADV_RANDOM 0
		131	#endif
83		132
84	#define dBUF \	133	#ifndef POSIX_FADV_NOREUSE
85	char *aio_buf; \	134	# define POSIX_FADV_NOREUSE 0
86	LOCK (wrklock); \	135	#endif
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	136
88	UNLOCK (wrklock); \	137	#ifndef POSIX_FADV_WILLNEED
89	if (!aio_buf) \	138	# define POSIX_FADV_WILLNEED 0
90	return -1;	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)
91		149
92	enum {	150	enum {
93	REQ_QUIT,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
94	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
96	REQ_SENDFILE,
97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
98	REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK,
102	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,
104	};	152	};
105		153
106	#define AIO_REQ_KLASS "IO::AIO::REQ"	154	#include "libeio/eio.c"
107	#define AIO_GRP_KLASS "IO::AIO::GRP"
108		155
109	typedef struct aio_cb
110	{
111	struct aio_cb *volatile next;
112
113	SV *data, *callback;
114	SV *fh, *fh2;
115	void *dataptr, *data2ptr;
116	Stat_t *statdata;
117	off_t offset;
118	size_t length;
119	ssize_t result;
120
121	STRLEN dataoffset;
122	int type;
123	int fd, fd2;
124	int errorno;
125	mode_t mode; /* open */
126
127	unsigned char flags;
128	unsigned char pri;
129
130	SV *self; /* the perl counterpart of this request, if any */
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132	} aio_cb;
133
134	enum {
135	FLAG_CANCELLED = 0x01,
136	};
137
138	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
139	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
140		158
141	enum {	159	static SV *on_next_submit;
142	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
143	PRI_MAX = 4,	161	static int max_outstanding;
144		162
145	DEFAULT_PRI = 0,	163	static s_epipe respipe;
146	PRI_BIAS = -PRI_MIN,
147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
148	};
149		164
150	#define AIO_TICKS ((1000000 + 1023) >> 10)
151
152	static unsigned int max_poll_time = 0;
153	static unsigned int max_poll_reqs = 0;
154
155	/* calculcate time difference in ~1/AIO_TICKS of a second */
156	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
157	{
158	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
159	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
160	}
161
162	static int next_pri = DEFAULT_PRI + PRI_BIAS;
163
164	static unsigned int started, idle, wanted;
165
166	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
167	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
168	#else
169	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
170	#endif
171
172	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
173	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
174
175	/* worker threads management */
176	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
177
178	typedef struct worker {
179	/* locked by wrklock */
180	struct worker *prev, *next;
181
182	pthread_t tid;
183
184	/* locked by reslock, reqlock or wrklock */
185	aio_req req; /* currently processed request */
186	void *dbuf;
187	DIR *dirp;
188	} worker;
189
190	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
191
192	static void worker_clear (worker *wrk)
193	{
194	if (wrk->dirp)
195	{
196	closedir (wrk->dirp);
197	wrk->dirp = 0;
198	}
199
200	if (wrk->dbuf)
201	{
202	free (wrk->dbuf);
203	wrk->dbuf = 0;
204	}
205	}
206
207	static void worker_free (worker *wrk)
208	{
209	wrk->next->prev = wrk->prev;
210	wrk->prev->next = wrk->next;
211
212	free (wrk);
213	}
214
215	static volatile unsigned int nreqs, nready, npending;
216	static volatile unsigned int max_idle = 4;
217	static volatile unsigned int max_outstanding = 0xffffffff;
218	static int respipe [2];
219
220	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
221	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
222	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
223
224	#if WORDACCESS_UNSAFE
225
226	static unsigned int get_nready ()
227	{
228	unsigned int retval;
229
230	LOCK (reqlock);
231	retval = nready;
232	UNLOCK (reqlock);
233
234	return retval;
235	}
236
237	static unsigned int get_npending ()
238	{
239	unsigned int retval;
240
241	LOCK (reslock);
242	retval = npending;
243	UNLOCK (reslock);
244
245	return retval;
246	}
247
248	static unsigned int get_nthreads ()
249	{
250	unsigned int retval;
251
252	LOCK (wrklock);
253	retval = started;
254	UNLOCK (wrklock);
255
256	return retval;
257	}
258
259	#else
260
261	# define get_nready() nready
262	# define get_npending() npending
263	# define get_nthreads() started
264
265	#endif
266
267	/*
268	* a somewhat faster data structure might be nice, but
269	* with 8 priorities this actually needs <20 insns
270	* per shift, the most expensive operation.
271	*/
272	typedef struct {
273	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
274	int size;
275	} reqq;
276
277	static reqq req_queue;
278	static reqq res_queue;
279
280	int reqq_push (reqq *q, aio_req req)
281	{
282	int pri = req->pri;
283	req->next = 0;
284
285	if (q->qe[pri])
286	{
287	q->qe[pri]->next = req;
288	q->qe[pri] = req;
289	}
290	else
291	q->qe[pri] = q->qs[pri] = req;
292
293	return q->size++;
294	}
295
296	aio_req reqq_shift (reqq *q)
297	{
298	int pri;
299
300	if (!q->size)
301	return 0;
302
303	--q->size;
304
305	for (pri = NUM_PRI; pri--; )
306	{
307	aio_req req = q->qs[pri];
308
309	if (req)
310	{
311	if (!(q->qs[pri] = req->next))
312	q->qe[pri] = 0;
313
314	return req;
315	}
316	}
317
318	abort ();
319	}
320
321	static int poll_cb ();
322	static void req_invoke (aio_req req);
323	static void req_free (aio_req req);	165	static void req_destroy (aio_req req);
324	static void req_cancel (aio_req req);	166	static void req_cancel (aio_req req);
325		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
326	/* must be called at most once */	180	/* must be called at most once */
327	static SV *req_sv (aio_req req, const char *klass)	181	static SV *req_sv (aio_req req, HV *stash)
328	{	182	{
329	if (!req->self)	183	if (!req->self)
330	{	184	{
331	req->self = (SV *)newHV ();	185	req->self = (SV *)newHV ();
332	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
333	}	187	}
334		188
335	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
336	}	190	}
337		191
338	static aio_req SvAIO_REQ (SV *sv)	192	static aio_req SvAIO_REQ (SV *sv)
339	{	193	{
340	MAGIC *mg;	194	MAGIC *mg;
341		195
342	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")))
343	croak ("object of class " AIO_REQ_KLASS " expected");	200	croak ("object of class IO::AIO::REQ expected");
344		201
345	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
346		203
347	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
348	}	205	}
349		206
350	static void aio_grp_feed (aio_req grp)	207	static void aio_grp_feed (aio_req grp)
351	{	208	{
352	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	209	if (grp->sv2 && SvOK (grp->sv2))
353	{	210	{
354	int old_len = grp->length;
355
356	if (grp->fh2 && SvOK (grp->fh2))
357	{
358	dSP;	211	dSP;
359		212
360	ENTER;	213	ENTER;
361	SAVETMPS;	214	SAVETMPS;
362	PUSHMARK (SP);	215	PUSHMARK (SP);
363	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	XPUSHs (req_sv (grp, aio_grp_stash));
364	PUTBACK;	217	PUTBACK;
365	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
366	SPAGAIN;	219	SPAGAIN;
367	FREETMPS;	220	FREETMPS;
368	LEAVE;	221	LEAVE;
369	}
370
371	/* stop if no progress has been made */
372	if (old_len == grp->length)
373	{
374	SvREFCNT_dec (grp->fh2);
375	grp->fh2 = 0;
376	break;
377	}
378	}	222	}
379	}	223	}
380		224
381	static void aio_grp_dec (aio_req grp)	225	static void req_submit (eio_req *req)
382	{	226	{
383	--grp->length;	227	eio_submit (req);
384		228
385	/* call feeder, if applicable */	229	if (expect_false (on_next_submit))
386	aio_grp_feed (grp);
387
388	/* finish, if done */
389	if (!grp->length && grp->fd)
390	{	230	{
391	req_invoke (grp);	231	dSP;
392	req_free (grp);	232	SV *cb = sv_2mortal (on_next_submit);
		233
		234	on_next_submit = 0;
		235
		236	PUSHMARK (SP);
		237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
393	}	239	}
394	}	240	}
395		241
396	static void req_invoke (aio_req req)	242	static int req_invoke (eio_req *req)
397	{	243	{
398	dSP;	244	dSP;
399		245
400	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	246	if (req->flags & FLAG_SV2_RO_OFF)
		247	SvREADONLY_off (req->sv2);
		248
		249	if (!EIO_CANCELLED (req) && req->callback)
401	{	250	{
402	ENTER;	251	ENTER;
403	SAVETMPS;	252	SAVETMPS;
404	PUSHMARK (SP);	253	PUSHMARK (SP);
405	EXTEND (SP, 1);	254	EXTEND (SP, 1);
406		255
407	switch (req->type)	256	switch (req->type)
408	{	257	{
409	case REQ_READDIR:	258	case EIO_READDIR:
410	{	259	{
411	SV *rv = &PL_sv_undef;	260	SV *rv = &PL_sv_undef;
412		261
413	if (req->result >= 0)	262	if (req->result >= 0)
414	{	263	{
415	int i;	264	int i;
416	char *buf = req->data2ptr;	265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
417	AV *av = newAV ();	267	AV *av = newAV ();
418		268
419	av_extend (av, req->result - 1);	269	av_extend (av, req->result - 1);
420		270
421	for (i = 0; i < req->result; ++i)	271	for (i = 0; i < req->result; ++i)
422	{	272	{
423	SV *sv = newSVpv (buf, 0);	273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
424		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
425	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);
426	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
		306	}
427	}	307	}
428		308
429	rv = sv_2mortal (newRV_noinc ((SV *)av));	309	rv = sv_2mortal (newRV_noinc ((SV *)av));
430	}	310	}
431		311
432	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))));
433	}	316	}
434	break;	317	break;
435		318
436	case REQ_OPEN:	319	case EIO_OPEN:
437	{	320	{
438	/* convert fd to fh */	321	/* convert fd to fh */
439	SV *fh;	322	SV *fh = &PL_sv_undef;
440		323
441	PUSHs (sv_2mortal (newSViv (req->result)));	324	if (req->result >= 0)
442	PUTBACK;	325	{
443	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	326	GV *gv = (GV *)sv_newmortal ();
444	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);
445		333
446	fh = SvREFCNT_inc (POPs);	334	symlen = snprintf (
		335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
447		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
448	PUSHMARK (SP);	346	PUSHs (fh);
449	XPUSHs (sv_2mortal (fh));
450	}	347	}
451	break;	348	break;
452		349
453	case REQ_GROUP:	350	case EIO_GROUP:
454	req->fd = 2; /* mark group as finished */	351	req->int1 = 2; /* mark group as finished */
455		352
456	if (req->data)	353	if (req->sv1)
457	{	354	{
458	int i;	355	int i;
459	AV *av = (AV *)req->data;	356	AV *av = (AV *)req->sv1;
460		357
461	EXTEND (SP, AvFILL (av) + 1);	358	EXTEND (SP, AvFILL (av) + 1);
462	for (i = 0; i <= AvFILL (av); ++i)	359	for (i = 0; i <= AvFILL (av); ++i)
463	PUSHs (*av_fetch (av, i, 0));	360	PUSHs (*av_fetch (av, i, 0));
464	}	361	}
465	break;	362	break;
466		363
467	case REQ_NOP:	364	case EIO_NOP:
468	case REQ_BUSY:	365	case EIO_BUSY:
469	break;	366	break;
		367
		368	case EIO_READLINK:
		369	if (req->result > 0)
		370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		371	break;
		372
		373	case EIO_STAT:
		374	case EIO_LSTAT:
		375	case EIO_FSTAT:
		376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		377	PL_laststatval = req->result;
		378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		379	PUSHs (sv_2mortal (newSViv (req->result)));
		380	break;
		381
		382	case EIO_READ:
		383	{
		384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
		388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
		390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
470		396
471	default:	397	default:
472	PUSHs (sv_2mortal (newSViv (req->result)));	398	PUSHs (sv_2mortal (newSViv (req->result)));
473	break;	399	break;
474	}	400	}
475		401
476	errno = req->errorno;	402	errno = req->errorno;
477		403
478	PUTBACK;	404	PUTBACK;
479	call_sv (req->callback, G_VOID | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
480	SPAGAIN;	406	SPAGAIN;
481		407
482	FREETMPS;	408	FREETMPS;
483	LEAVE;	409	LEAVE;
		410
		411	PUTBACK;
484	}	412	}
485		413
486	if (req->grp)	414	return !!SvTRUE (ERRSV);
487	{
488	aio_req grp = req->grp;
489
490	/* unlink request */
491	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
492	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
493
494	if (grp->grp_first == req)
495	grp->grp_first = req->grp_next;
496
497	aio_grp_dec (grp);
498	}
499
500	if (SvTRUE (ERRSV))
501	{
502	req_free (req);
503	croak (0);
504	}
505	}	415	}
506		416
507	static void req_free (aio_req req)	417	static void req_destroy (aio_req req)
508	{	418	{
509	if (req->self)	419	if (req->self)
510	{	420	{
511	sv_unmagic (req->self, PERL_MAGIC_ext);	421	sv_unmagic (req->self, PERL_MAGIC_ext);
512	SvREFCNT_dec (req->self);	422	SvREFCNT_dec (req->self);
513	}	423	}
514		424
515	SvREFCNT_dec (req->data);
516	SvREFCNT_dec (req->fh);	425	SvREFCNT_dec (req->sv1);
517	SvREFCNT_dec (req->fh2);	426	SvREFCNT_dec (req->sv2);
518	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
519	Safefree (req->statdata);
520
521	if (req->type == REQ_READDIR)
522	free (req->data2ptr);
523		428
524	Safefree (req);	429	Safefree (req);
525	}	430	}
526		431
527	static void req_cancel_subs (aio_req grp)	432	static void req_cancel_subs (aio_req grp)
528	{	433	{
529	aio_req sub;	434	aio_req sub;
530		435
531	if (grp->type != REQ_GROUP)	436	if (grp->type != EIO_GROUP)
532	return;	437	return;
533		438
534	SvREFCNT_dec (grp->fh2);	439	SvREFCNT_dec (grp->sv2);
535	grp->fh2 = 0;	440	grp->sv2 = 0;
536		441
537	for (sub = grp->grp_first; sub; sub = sub->grp_next)	442	eio_grp_cancel (grp);
538	req_cancel (sub);
539	}	443	}
540		444
541	static void req_cancel (aio_req req)	445	static void
		446	create_respipe (void)
542	{	447	{
543	req->flags |= FLAG_CANCELLED;	448	if (s_epipe_renew (&respipe))
544		449	croak ("IO::AIO: unable to initialize result pipe");
545	req_cancel_subs (req);
546	}	450	}
547		451
548	static void *aio_proc(void *arg);
549
550	static void start_thread (void)
551	{
552	sigset_t fullsigset, oldsigset;
553	pthread_attr_t attr;
554
555	worker *wrk = calloc (1, sizeof (worker));
556
557	if (!wrk)
558	croak ("unable to allocate worker thread data");
559
560	pthread_attr_init (&attr);
561	pthread_attr_setstacksize (&attr, STACKSIZE);
562	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
563	#ifdef PTHREAD_SCOPE_PROCESS
564	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
565	#endif
566
567	sigfillset (&fullsigset);
568
569	LOCK (wrklock);
570	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
571
572	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
573	{
574	wrk->prev = &wrk_first;
575	wrk->next = wrk_first.next;
576	wrk_first.next->prev = wrk;
577	wrk_first.next = wrk;
578	++started;
579	}
580	else
581	free (wrk);
582
583	sigprocmask (SIG_SETMASK, &oldsigset, 0);
584	UNLOCK (wrklock);
585	}
586
587	static void maybe_start_thread ()
588	{
589	if (get_nthreads () >= wanted)
590	return;
591
592	/* todo: maybe use idle here, but might be less exact */
593	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
594	return;
595
596	start_thread ();
597	}
598
599	static void req_send (aio_req req)
600	{
601	++nreqs;
602
603	LOCK (reqlock);
604	++nready;
605	reqq_push (&req_queue, req);
606	pthread_cond_signal (&reqwait);
607	UNLOCK (reqlock);
608
609	maybe_start_thread ();
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	LOCK (reqlock);
622	reqq_push (&req_queue, req);
623	pthread_cond_signal (&reqwait);
624	UNLOCK (reqlock);
625
626	LOCK (wrklock);
627	--started;
628	UNLOCK (wrklock);
629	}
630
631	static void set_max_idle (int nthreads)
632	{
633	if (WORDACCESS_UNSAFE) LOCK (reqlock);
634	max_idle = nthreads <= 0 ? 1 : nthreads;
635	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
636	}
637
638	static void min_parallel (int nthreads)
639	{
640	if (wanted < nthreads)
641	wanted = nthreads;
642	}
643
644	static void max_parallel (int nthreads)
645	{
646	if (wanted > nthreads)
647	wanted = nthreads;
648
649	while (started > wanted)
650	end_thread ();
651	}
652
653	static void poll_wait ()	452	static void poll_wait (void)
654	{	453	{
655	fd_set rfd;
656
657	while (nreqs)	454	while (eio_nreqs ())
658	{	455	{
659	int size;	456	int size;
660	if (WORDACCESS_UNSAFE) LOCK (reslock);	457
		458	X_LOCK (reslock);
661	size = res_queue.size;	459	size = res_queue.size;
662	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	460	X_UNLOCK (reslock);
663		461
664	if (size)	462	if (size)
665	return;	463	return;
666		464
667	maybe_start_thread ();	465	etp_maybe_start_thread ();
668		466
669	FD_ZERO(&rfd);	467	s_epipe_wait (&respipe);
670	FD_SET(respipe [0], &rfd);
671
672	select (respipe [0] + 1, &rfd, 0, 0, 0);
673	}	468	}
674	}	469	}
675		470
676	static int poll_cb ()	471	static int poll_cb (void)
677	{	472	{
678	dSP;
679	int count = 0;
680	int maxreqs = max_poll_reqs;
681	int do_croak = 0;
682	struct timeval tv_start, tv_now;
683	aio_req req;
684
685	if (max_poll_time)
686	gettimeofday (&tv_start, 0);
687
688	for (;;)	473	for (;;)
689	{	474	{
690	for (;;)	475	int res = eio_poll ();
691	{
692	maybe_start_thread ();
693		476
694	LOCK (reslock);	477	if (res > 0)
695	req = reqq_shift (&res_queue);
696
697	if (req)
698	{
699	--npending;
700
701	if (!res_queue.size)
702	{
703	/* read any signals sent by the worker threads */
704	char buf [32];
705	while (read (respipe [0], buf, 32) == 32)
706	;
707	}
708	}
709
710	UNLOCK (reslock);
711
712	if (!req)
713	break;
714
715	--nreqs;
716
717	if (req->type == REQ_GROUP && req->length)
718	{
719	req->fd = 1; /* mark request as delayed */
720	continue;
721	}
722	else
723	{
724	if (req->type == REQ_READ)
725	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
726
727	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
728	SvREADONLY_off (req->data);
729
730	if (req->statdata)
731	{
732	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
733	PL_laststatval = req->result;
734	PL_statcache = *(req->statdata);
735	}
736
737	req_invoke (req);
738
739	count++;
740	}
741
742	req_free (req);
743
744	if (maxreqs && !--maxreqs)
745	break;
746
747	if (max_poll_time)
748	{
749	gettimeofday (&tv_now, 0);
750
751	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
752	break;
753	}
754	}
755
756	if (nreqs <= max_outstanding)
757	break;	478	croak (0);
		479
		480	if (!max_outstanding || max_outstanding > eio_nreqs ())
		481	return res;
758		482
759	poll_wait ();	483	poll_wait ();
760
761	++maxreqs;
762	}	484	}
763
764	return count;
765	}
766
767	static void create_pipe ()
768	{
769	if (pipe (respipe))
770	croak ("unable to initialize result pipe");
771
772	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
773	croak ("cannot set result pipe to nonblocking mode");
774
775	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
776	croak ("cannot set result pipe to nonblocking mode");
777	}
778
779	/*****************************************************************************/
780	/* work around various missing functions */
781
782	#if !HAVE_PREADWRITE
783	# define pread aio_pread
784	# define pwrite aio_pwrite
785
786	/*
787	* make our pread/pwrite safe against themselves, but not against
788	* normal read/write by using a mutex. slows down execution a lot,
789	* but that's your problem, not mine.
790	*/
791	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
792
793	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
794	{
795	ssize_t res;
796	off_t ooffset;
797
798	LOCK (preadwritelock);
799	ooffset = lseek (fd, 0, SEEK_CUR);
800	lseek (fd, offset, SEEK_SET);
801	res = read (fd, buf, count);
802	lseek (fd, ooffset, SEEK_SET);
803	UNLOCK (preadwritelock);
804
805	return res;
806	}
807
808	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
809	{
810	ssize_t res;
811	off_t ooffset;
812
813	LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);
816	res = write (fd, buf, count);
817	lseek (fd, offset, SEEK_SET);
818	UNLOCK (preadwritelock);
819
820	return res;
821	}
822	#endif
823
824	#if !HAVE_FDATASYNC
825	# define fdatasync fsync
826	#endif
827
828	#if !HAVE_READAHEAD
829	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
830
831	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
832	{
833	dBUF;
834
835	while (count > 0)
836	{
837	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
838
839	pread (fd, aio_buf, len, offset);
840	offset += len;
841	count -= len;
842	}
843
844	errno = 0;
845	}
846
847	#endif
848
849	#if !HAVE_READDIR_R
850	# define readdir_r aio_readdir_r
851
852	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
853
854	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
855	{
856	struct dirent *e;
857	int errorno;
858
859	LOCK (readdirlock);
860
861	e = readdir (dirp);
862	errorno = errno;
863
864	if (e)
865	{
866	*res = ent;
867	strcpy (ent->d_name, e->d_name);
868	}
869	else
870	*res = 0;
871
872	UNLOCK (readdirlock);
873
874	errno = errorno;
875	return e ? 0 : -1;
876	}
877	#endif
878
879	/* sendfile always needs emulation */
880	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
881	{
882	ssize_t res;
883
884	if (!count)
885	return 0;
886
887	#if HAVE_SENDFILE
888	# if __linux
889	res = sendfile (ofd, ifd, &offset, count);
890
891	# elif __freebsd
892	/*
893	* Of course, the freebsd sendfile is a dire hack with no thoughts
894	* wasted on making it similar to other I/O functions.
895	*/
896	{
897	off_t sbytes;
898	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
899
900	if (res < 0 && sbytes)
901	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
902	res = sbytes;
903	}
904
905	# elif __hpux
906	res = sendfile (ofd, ifd, offset, count, 0, 0);
907
908	# elif __solaris
909	{
910	struct sendfilevec vec;
911	size_t sbytes;
912
913	vec.sfv_fd = ifd;
914	vec.sfv_flag = 0;
915	vec.sfv_off = offset;
916	vec.sfv_len = count;
917
918	res = sendfilev (ofd, &vec, 1, &sbytes);
919
920	if (res < 0 && sbytes)
921	res = sbytes;
922	}
923
924	# endif
925	#else
926	res = -1;
927	errno = ENOSYS;
928	#endif
929
930	if (res < 0
931	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
932	#if __solaris
933	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
934	#endif
935	)
936	)
937	{
938	/* emulate sendfile. this is a major pain in the ass */
939	dBUF;
940
941	res = 0;
942
943	while (count)
944	{
945	ssize_t cnt;
946
947	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
948
949	if (cnt <= 0)
950	{
951	if (cnt && !res) res = -1;
952	break;
953	}
954
955	cnt = write (ofd, aio_buf, cnt);
956
957	if (cnt <= 0)
958	{
959	if (cnt && !res) res = -1;
960	break;
961	}
962
963	offset += cnt;
964	res += cnt;
965	count -= cnt;
966	}
967	}
968
969	return res;
970	}
971
972	/* read a full directory */
973	static void scandir_ (aio_req req, worker *self)
974	{
975	DIR *dirp;
976	union
977	{
978	struct dirent d;
979	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
980	} *u;
981	struct dirent *entp;
982	char *name, *names;
983	int memlen = 4096;
984	int memofs = 0;
985	int res = 0;
986	int errorno;
987
988	LOCK (wrklock);
989	self->dirp = dirp = opendir (req->dataptr);
990	self->dbuf = u = malloc (sizeof (*u));
991	req->data2ptr = names = malloc (memlen);
992	UNLOCK (wrklock);
993
994	if (dirp && u && names)
995	for (;;)
996	{
997	errno = 0;
998	readdir_r (dirp, &u->d, &entp);
999
1000	if (!entp)
1001	break;
1002
1003	name = entp->d_name;
1004
1005	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1006	{
1007	int len = strlen (name) + 1;
1008
1009	res++;
1010
1011	while (memofs + len > memlen)
1012	{
1013	memlen *= 2;
1014	LOCK (wrklock);
1015	req->data2ptr = names = realloc (names, memlen);
1016	UNLOCK (wrklock);
1017
1018	if (!names)
1019	break;
1020	}
1021
1022	memcpy (names + memofs, name, len);
1023	memofs += len;
1024	}
1025	}
1026
1027	if (errno)
1028	res = -1;
1029
1030	req->result = res;
1031	}
1032
1033	/*****************************************************************************/
1034
1035	static void *aio_proc (void *thr_arg)
1036	{
1037	aio_req req;
1038	struct timespec ts;
1039	worker *self = (worker *)thr_arg;
1040
1041	/* try to distribute timeouts somewhat evenly */
1042	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1043	* (1000000000UL / 1024UL);
1044
1045	for (;;)
1046	{
1047	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1048
1049	LOCK (reqlock);
1050
1051	for (;;)
1052	{
1053	self->req = req = reqq_shift (&req_queue);
1054
1055	if (req)
1056	break;
1057
1058	++idle;
1059
1060	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1061	== ETIMEDOUT)
1062	{
1063	if (idle > max_idle)
1064	{
1065	--idle;
1066	UNLOCK (reqlock);
1067	LOCK (wrklock);
1068	--started;
1069	UNLOCK (wrklock);
1070	goto quit;
1071	}
1072
1073	/* we are allowed to idle, so do so without any timeout */
1074	pthread_cond_wait (&reqwait, &reqlock);
1075	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1076	}
1077
1078	--idle;
1079	}
1080
1081	--nready;
1082
1083	UNLOCK (reqlock);
1084
1085	errno = 0; /* strictly unnecessary */
1086
1087	if (!(req->flags & FLAG_CANCELLED))
1088	switch (req->type)
1089	{
1090	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
1091	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
1092
1093	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
1094	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
1095
1096	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
1097	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
1098	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
1099
1100	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
1101	case REQ_CLOSE: req->result = close (req->fd); break;
1102	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
1103	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
1104	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
1105	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
1106	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
1107	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
1108
1109	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
1110	case REQ_FSYNC: req->result = fsync (req->fd); break;
1111	case REQ_READDIR: scandir_ (req, self); break;
1112
1113	case REQ_BUSY:
1114	{
1115	struct timeval tv;
1116
1117	tv.tv_sec = req->fd;
1118	tv.tv_usec = req->fd2;
1119
1120	req->result = select (0, 0, 0, 0, &tv);
1121	}
1122
1123	case REQ_GROUP:
1124	case REQ_NOP:
1125	break;
1126
1127	case REQ_QUIT:
1128	goto quit;
1129
1130	default:
1131	req->result = ENOSYS;
1132	break;
1133	}
1134
1135	req->errorno = errno;
1136
1137	LOCK (reslock);
1138
1139	++npending;
1140
1141	if (!reqq_push (&res_queue, req))
1142	/* write a dummy byte to the pipe so fh becomes ready */
1143	write (respipe [1], &respipe, 1);
1144
1145	self->req = 0;
1146	worker_clear (self);
1147
1148	UNLOCK (reslock);
1149	}
1150
1151	quit:
1152	LOCK (wrklock);
1153	worker_free (self);
1154	UNLOCK (wrklock);
1155
1156	return 0;
1157	}
1158
1159	/*****************************************************************************/
1160
1161	static void atfork_prepare (void)
1162	{
1163	LOCK (wrklock);
1164	LOCK (reqlock);
1165	LOCK (reslock);
1166	#if !HAVE_PREADWRITE
1167	LOCK (preadwritelock);
1168	#endif
1169	#if !HAVE_READDIR_R
1170	LOCK (readdirlock);
1171	#endif
1172	}
1173
1174	static void atfork_parent (void)
1175	{
1176	#if !HAVE_READDIR_R
1177	UNLOCK (readdirlock);
1178	#endif
1179	#if !HAVE_PREADWRITE
1180	UNLOCK (preadwritelock);
1181	#endif
1182	UNLOCK (reslock);
1183	UNLOCK (reqlock);
1184	UNLOCK (wrklock);
1185	}	485	}
1186		486
1187	static void atfork_child (void)	487	static void atfork_child (void)
1188	{	488	{
1189	aio_req prv;
1190
1191	while (prv = reqq_shift (&req_queue))
1192	req_free (prv);
1193
1194	while (prv = reqq_shift (&res_queue))
1195	req_free (prv);
1196
1197	while (wrk_first.next != &wrk_first)
1198	{
1199	worker *wrk = wrk_first.next;
1200
1201	if (wrk->req)
1202	req_free (wrk->req);
1203
1204	worker_clear (wrk);
1205	worker_free (wrk);
1206	}
1207
1208	started = 0;
1209	idle = 0;
1210	nreqs = 0;
1211	nready = 0;
1212	npending = 0;
1213
1214	close (respipe [0]);
1215	close (respipe [1]);
1216	create_pipe ();	489	create_respipe ();
		490	}
1217		491
1218	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;
1219	}	497	}
1220		498
1221	#define dREQ \	499	#define dREQ \
		500	SV *cb_cv; \
1222	aio_req req; \	501	aio_req req; \
1223	int req_pri = next_pri; \	502	int req_pri = next_pri; \
1224	next_pri = DEFAULT_PRI + PRI_BIAS; \	503	next_pri = EIO_PRI_DEFAULT; \
1225	\	504	\
1226	if (SvOK (callback) && !SvROK (callback)) \	505	cb_cv = get_cb (callback); \
1227	croak ("callback must be undef or of reference type"); \
1228	\	506	\
1229	Newz (0, req, 1, aio_cb); \	507	Newz (0, req, 1, eio_req); \
1230	if (!req) \	508	if (!req) \
1231	croak ("out of memory during aio_req allocation"); \	509	croak ("out of memory during eio_req allocation"); \
1232	\	510	\
1233	req->callback = newSVsv (callback); \	511	req->callback = SvREFCNT_inc (cb_cv); \
1234	req->pri = req_pri	512	req->pri = req_pri
1235		513
1236	#define REQ_SEND \	514	#define REQ_SEND \
		515	PUTBACK; \
1237	req_send (req); \	516	req_submit (req); \
		517	SPAGAIN; \
1238	\	518	\
1239	if (GIMME_V != G_VOID) \	519	if (GIMME_V != G_VOID) \
1240	XPUSHs (req_sv (req, AIO_REQ_KLASS));	520	XPUSHs (req_sv (req, aio_req_stash));
1241		521
1242	MODULE = IO::AIO PACKAGE = IO::AIO	522	MODULE = IO::AIO PACKAGE = IO::AIO
1243		523
1244	PROTOTYPES: ENABLE	524	PROTOTYPES: ENABLE
1245		525
1246	BOOT:	526	BOOT:
1247	{	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 (SYNC_FILE_RANGE_WAIT_BEFORE)
		551	const_eio (SYNC_FILE_RANGE_WRITE)
		552	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		553
		554	const_eio (READDIR_DENTS)
		555	const_eio (READDIR_DIRS_FIRST)
		556	const_eio (READDIR_STAT_ORDER)
		557	const_eio (READDIR_FOUND_UNKNOWN)
		558
		559	const_eio (DT_UNKNOWN)
		560	const_eio (DT_FIFO)
		561	const_eio (DT_CHR)
		562	const_eio (DT_DIR)
		563	const_eio (DT_BLK)
		564	const_eio (DT_REG)
		565	const_eio (DT_LNK)
		566	const_eio (DT_SOCK)
		567	const_eio (DT_WHT)
		568	};
		569
1248	HV *stash = gv_stashpv ("IO::AIO", 1);	570	aio_stash = gv_stashpv ("IO::AIO" , 1);
		571	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		572	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1249		573
1250	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	574	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1251	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	575	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1252	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1253	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1254	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1255	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1256		576
1257	create_pipe ();	577	create_respipe ();
1258	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	578
		579	if (eio_init (want_poll, done_poll) < 0)
		580	croak ("IO::AIO: unable to initialise eio library");
		581
		582	/* atfork child called in fifo order, so before eio's handler */
		583	X_THREAD_ATFORK (0, 0, atfork_child);
1259	}	584	}
1260		585
1261	void	586	void
1262	max_poll_reqs (int nreqs)	587	max_poll_reqs (int nreqs)
1263	PROTOTYPE: $	588	PROTOTYPE: $
1264	CODE:	589	CODE:
1265	max_poll_reqs = nreqs;	590	eio_set_max_poll_reqs (nreqs);
1266		591
1267	void	592	void
1268	max_poll_time (double nseconds)	593	max_poll_time (double nseconds)
1269	PROTOTYPE: $	594	PROTOTYPE: $
1270	CODE:	595	CODE:
1271	max_poll_time = nseconds * AIO_TICKS;	596	eio_set_max_poll_time (nseconds);
1272		597
1273	void	598	void
1274	min_parallel (int nthreads)	599	min_parallel (int nthreads)
1275	PROTOTYPE: $	600	PROTOTYPE: $
		601	CODE:
		602	eio_set_min_parallel (nthreads);
1276		603
1277	void	604	void
1278	max_parallel (int nthreads)	605	max_parallel (int nthreads)
1279	PROTOTYPE: $	606	PROTOTYPE: $
		607	CODE:
		608	eio_set_max_parallel (nthreads);
1280		609
1281	void	610	void
1282	max_idle (int nthreads)	611	max_idle (int nthreads)
1283	PROTOTYPE: $	612	PROTOTYPE: $
1284	CODE:	613	CODE:
1285	set_max_idle (nthreads);	614	eio_set_max_idle (nthreads);
1286		615
1287	int	616	void
1288	max_outstanding (int maxreqs)	617	max_outstanding (int maxreqs)
1289	PROTOTYPE: $	618	PROTOTYPE: $
1290	CODE:	619	CODE:
1291	RETVAL = max_outstanding;
1292	max_outstanding = maxreqs;	620	max_outstanding = maxreqs;
1293	OUTPUT:
1294	RETVAL
1295		621
1296	void	622	void
1297	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	623	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1298	SV * pathname
1299	int flags
1300	int mode
1301	SV * callback
1302	PROTOTYPE: $$$;$	624	PROTOTYPE: $$$;$
1303	PPCODE:	625	PPCODE:
1304	{	626	{
1305	dREQ;	627	dREQ;
1306		628
1307	req->type = REQ_OPEN;	629	req->type = EIO_OPEN;
1308	req->data = newSVsv (pathname);	630	req->sv1 = newSVsv (pathname);
1309	req->dataptr = SvPVbyte_nolen (req->data);	631	req->ptr1 = SvPVbyte_nolen (req->sv1);
1310	req->fd = flags;	632	req->int1 = flags;
1311	req->mode = mode;	633	req->int2 = mode;
1312		634
1313	REQ_SEND;	635	REQ_SEND;
1314	}	636	}
1315		637
1316	void	638	void
1317	aio_close (fh,callback=&PL_sv_undef)	639	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1318	SV * fh
1319	SV * callback
1320	PROTOTYPE: $;$	640	PROTOTYPE: $;$
1321	ALIAS:	641	ALIAS:
1322	aio_close = REQ_CLOSE
1323	aio_fsync = REQ_FSYNC	642	aio_fsync = EIO_FSYNC
1324	aio_fdatasync = REQ_FDATASYNC	643	aio_fdatasync = EIO_FDATASYNC
1325	PPCODE:	644	PPCODE:
1326	{	645	{
		646	int fd = s_fileno_croak (fh, 0);
1327	dREQ;	647	dREQ;
1328		648
1329	req->type = ix;	649	req->type = ix;
1330	req->fh = newSVsv (fh);	650	req->sv1 = newSVsv (fh);
1331	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	651	req->int1 = fd;
1332		652
1333	REQ_SEND (req);	653	REQ_SEND (req);
1334	}	654	}
1335		655
1336	void	656	void
		657	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		658	PROTOTYPE: $$$$;$
		659	PPCODE:
		660	{
		661	int fd = s_fileno_croak (fh, 0);
		662	dREQ;
		663
		664	req->type = EIO_SYNC_FILE_RANGE;
		665	req->sv1 = newSVsv (fh);
		666	req->int1 = fd;
		667	req->offs = offset;
		668	req->size = nbytes;
		669	req->int2 = flags;
		670
		671	REQ_SEND (req);
		672	}
		673
		674	void
		675	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		676	PROTOTYPE: $;$
		677	PPCODE:
		678	{
		679	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		680	int fd = s_fileno_croak (fh, 0);
		681	dREQ;
		682
		683	if (close_pipe < 0)
		684	{
		685	int pipefd [2];
		686
		687	if (pipe (pipefd) < 0
		688	|| close (pipefd [1]) < 0
		689	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		690	abort (); /*D*/
		691
		692	close_pipe = pipefd [0];
		693	}
		694
		695	req->type = EIO_DUP2;
		696	req->int1 = close_pipe;
		697	req->sv2 = newSVsv (fh);
		698	req->int2 = fd;
		699
		700	REQ_SEND (req);
		701	}
		702
		703	void
1337	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	704	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1338	SV * fh
1339	UV offset
1340	UV length
1341	SV * data
1342	UV dataoffset
1343	SV * callback
1344	ALIAS:	705	ALIAS:
1345	aio_read = REQ_READ	706	aio_read = EIO_READ
1346	aio_write = REQ_WRITE	707	aio_write = EIO_WRITE
1347	PROTOTYPE: $$$$$;$	708	PROTOTYPE: $$$$$;$
1348	PPCODE:	709	PPCODE:
1349	{	710	{
1350	aio_req req;
1351	STRLEN svlen;	711	STRLEN svlen;
		712	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1352	char *svptr = SvPVbyte (data, svlen);	713	char *svptr = SvPVbyte (data, svlen);
1353		714	UV len = SvUV (length);
1354	SvUPGRADE (data, SVt_PV);
1355	SvPOK_on (data);
1356		715
1357	if (dataoffset < 0)	716	if (dataoffset < 0)
1358	dataoffset += svlen;	717	dataoffset += svlen;
1359		718
1360	if (dataoffset < 0 || dataoffset > svlen)	719	if (dataoffset < 0 || dataoffset > svlen)
1361	croak ("data offset outside of string");	720	croak ("dataoffset outside of data scalar");
1362		721
1363	if (ix == REQ_WRITE)	722	if (ix == EIO_WRITE)
1364	{	723	{
1365	/* write: check length and adjust. */	724	/* write: check length and adjust. */
1366	if (length < 0 || length + dataoffset > svlen)	725	if (!SvOK (length) || len + dataoffset > svlen)
1367	length = svlen - dataoffset;	726	len = svlen - dataoffset;
1368	}	727	}
1369	else	728	else
1370	{	729	{
1371	/* read: grow scalar as necessary */	730	/* read: check type and grow scalar as necessary */
		731	SvUPGRADE (data, SVt_PV);
1372	svptr = SvGROW (data, length + dataoffset);	732	svptr = SvGROW (data, len + dataoffset + 1);
1373	}	733	}
1374
1375	if (length < 0)
1376	croak ("length must not be negative");
1377		734
1378	{	735	{
1379	dREQ;	736	dREQ;
1380		737
1381	req->type = ix;	738	req->type = ix;
1382	req->fh = newSVsv (fh);	739	req->sv1 = newSVsv (fh);
1383	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	740	req->int1 = fd;
1384	: IoOFP (sv_2io (fh)));	741	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1385	req->offset = offset;	742	req->size = len;
1386	req->length = length;
1387	req->data = SvREFCNT_inc (data);	743	req->sv2 = SvREFCNT_inc (data);
1388	req->dataptr = (char *)svptr + dataoffset;	744	req->ptr2 = (char *)svptr + dataoffset;
		745	req->stroffset = dataoffset;
1389		746
1390	if (!SvREADONLY (data))	747	if (!SvREADONLY (data))
1391	{	748	{
1392	SvREADONLY_on (data);	749	SvREADONLY_on (data);
1393	req->data2ptr = (void *)data;	750	req->flags |= FLAG_SV2_RO_OFF;
1394	}	751	}
1395		752
1396	REQ_SEND;	753	REQ_SEND;
1397	}	754	}
1398	}	755	}
1399		756
1400	void	757	void
		758	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		759	PROTOTYPE: $$;$
		760	PPCODE:
		761	{
		762	SV *data;
		763	dREQ;
		764
		765	req->type = EIO_READLINK;
		766	req->sv1 = newSVsv (path);
		767	req->ptr1 = SvPVbyte_nolen (req->sv1);
		768
		769	REQ_SEND;
		770	}
		771
		772	void
1401	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	773	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1402	SV * out_fh
1403	SV * in_fh
1404	UV in_offset
1405	UV length
1406	SV * callback
1407	PROTOTYPE: $$$$;$	774	PROTOTYPE: $$$$;$
1408	PPCODE:	775	PPCODE:
1409	{	776	{
		777	int ifd = s_fileno_croak (in_fh , 0);
		778	int ofd = s_fileno_croak (out_fh, 1);
1410	dREQ;	779	dREQ;
1411		780
1412	req->type = REQ_SENDFILE;	781	req->type = EIO_SENDFILE;
1413	req->fh = newSVsv (out_fh);	782	req->sv1 = newSVsv (out_fh);
1414	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	783	req->int1 = ofd;
1415	req->fh2 = newSVsv (in_fh);	784	req->sv2 = newSVsv (in_fh);
1416	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	785	req->int2 = ifd;
1417	req->offset = in_offset;	786	req->offs = in_offset;
1418	req->length = length;	787	req->size = length;
1419		788
1420	REQ_SEND;	789	REQ_SEND;
1421	}	790	}
1422		791
1423	void	792	void
1424	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	793	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1425	SV * fh
1426	UV offset
1427	IV length
1428	SV * callback
1429	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
1430	PPCODE:	795	PPCODE:
1431	{	796	{
		797	int fd = s_fileno_croak (fh, 0);
1432	dREQ;	798	dREQ;
1433		799
1434	req->type = REQ_READAHEAD;	800	req->type = EIO_READAHEAD;
1435	req->fh = newSVsv (fh);	801	req->sv1 = newSVsv (fh);
1436	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	802	req->int1 = fd;
1437	req->offset = offset;	803	req->offs = offset;
1438	req->length = length;	804	req->size = length;
1439		805
1440	REQ_SEND;	806	REQ_SEND;
1441	}	807	}
1442		808
1443	void	809	void
1444	aio_stat (fh_or_path,callback=&PL_sv_undef)	810	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1445	SV * fh_or_path
1446	SV * callback
1447	ALIAS:	811	ALIAS:
1448	aio_stat = REQ_STAT	812	aio_stat = EIO_STAT
1449	aio_lstat = REQ_LSTAT	813	aio_lstat = EIO_LSTAT
1450	PPCODE:	814	PPCODE:
1451	{	815	{
1452	dREQ;	816	dREQ;
1453		817
1454	New (0, req->statdata, 1, Stat_t);	818	req->sv1 = newSVsv (fh_or_path);
1455	if (!req->statdata)
1456	{
1457	req_free (req);
1458	croak ("out of memory during aio_req->statdata allocation");
1459	}
1460		819
1461	if (SvPOK (fh_or_path))	820	if (SvPOK (req->sv1))
1462	{	821	{
1463	req->type = ix;	822	req->type = ix;
1464	req->data = newSVsv (fh_or_path);
1465	req->dataptr = SvPVbyte_nolen (req->data);	823	req->ptr1 = SvPVbyte_nolen (req->sv1);
1466	}	824	}
1467	else	825	else
1468	{	826	{
1469	req->type = REQ_FSTAT;	827	req->type = EIO_FSTAT;
1470	req->fh = newSVsv (fh_or_path);
1471	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	828	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1472	}	829	}
1473		830
1474	REQ_SEND;	831	REQ_SEND;
1475	}	832	}
1476		833
1477	void	834	void
		835	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		836	PPCODE:
		837	{
		838	dREQ;
		839
		840	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		841	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		842	req->sv1 = newSVsv (fh_or_path);
		843
		844	if (SvPOK (req->sv1))
		845	{
		846	req->type = EIO_UTIME;
		847	req->ptr1 = SvPVbyte_nolen (req->sv1);
		848	}
		849	else
		850	{
		851	req->type = EIO_FUTIME;
		852	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		853	}
		854
		855	REQ_SEND;
		856	}
		857
		858	void
		859	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		860	PPCODE:
		861	{
		862	dREQ;
		863
		864	req->sv1 = newSVsv (fh_or_path);
		865	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		866
		867	if (SvPOK (req->sv1))
		868	{
		869	req->type = EIO_TRUNCATE;
		870	req->ptr1 = SvPVbyte_nolen (req->sv1);
		871	}
		872	else
		873	{
		874	req->type = EIO_FTRUNCATE;
		875	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		876	}
		877
		878	REQ_SEND;
		879	}
		880
		881	void
		882	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		883	ALIAS:
		884	aio_chmod = EIO_CHMOD
		885	aio_mkdir = EIO_MKDIR
		886	PPCODE:
		887	{
		888	dREQ;
		889
		890	req->int2 = mode;
		891	req->sv1 = newSVsv (fh_or_path);
		892
		893	if (SvPOK (req->sv1))
		894	{
		895	req->type = ix;
		896	req->ptr1 = SvPVbyte_nolen (req->sv1);
		897	}
		898	else
		899	{
		900	req->type = EIO_FCHMOD;
		901	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		902	}
		903
		904	REQ_SEND;
		905	}
		906
		907	void
		908	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		909	PPCODE:
		910	{
		911	dREQ;
		912
		913	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		914	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		915	req->sv1 = newSVsv (fh_or_path);
		916
		917	if (SvPOK (req->sv1))
		918	{
		919	req->type = EIO_CHOWN;
		920	req->ptr1 = SvPVbyte_nolen (req->sv1);
		921	}
		922	else
		923	{
		924	req->type = EIO_FCHOWN;
		925	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		926	}
		927
		928	REQ_SEND;
		929	}
		930
		931	void
		932	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		933	PPCODE:
		934	{
		935	dREQ;
		936
		937	req->type = EIO_READDIR;
		938	req->sv1 = newSVsv (pathname);
		939	req->ptr1 = SvPVbyte_nolen (req->sv1);
		940	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		941
		942	if (flags & EIO_READDIR_DENTS)
		943	req->int1 |= EIO_READDIR_CUSTOM2;
		944
		945	REQ_SEND;
		946	}
		947
		948	void
1478	aio_unlink (pathname,callback=&PL_sv_undef)	949	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1479	SV * pathname
1480	SV * callback
1481	ALIAS:	950	ALIAS:
1482	aio_unlink = REQ_UNLINK	951	aio_unlink = EIO_UNLINK
1483	aio_rmdir = REQ_RMDIR	952	aio_rmdir = EIO_RMDIR
1484	aio_readdir = REQ_READDIR	953	aio_readdir = EIO_READDIR
1485	PPCODE:	954	PPCODE:
1486	{	955	{
1487	dREQ;	956	dREQ;
1488		957
1489	req->type = ix;	958	req->type = ix;
1490	req->data = newSVsv (pathname);	959	req->sv1 = newSVsv (pathname);
1491	req->dataptr = SvPVbyte_nolen (req->data);	960	req->ptr1 = SvPVbyte_nolen (req->sv1);
		961
		962	REQ_SEND;
		963	}
		964
		965	void
		966	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		967	ALIAS:
		968	aio_link = EIO_LINK
		969	aio_symlink = EIO_SYMLINK
		970	aio_rename = EIO_RENAME
		971	PPCODE:
		972	{
		973	dREQ;
		974
		975	req->type = ix;
		976	req->sv1 = newSVsv (oldpath);
		977	req->ptr1 = SvPVbyte_nolen (req->sv1);
		978	req->sv2 = newSVsv (newpath);
		979	req->ptr2 = SvPVbyte_nolen (req->sv2);
1492		980
1493	REQ_SEND;	981	REQ_SEND;
1494	}	982	}
1495		983
1496	void	984	void
1497	aio_link (oldpath,newpath,callback=&PL_sv_undef)	985	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1498	SV * oldpath
1499	SV * newpath
1500	SV * callback
1501	ALIAS:
1502	aio_link = REQ_LINK
1503	aio_symlink = REQ_SYMLINK
1504	aio_rename = REQ_RENAME
1505	PPCODE:	986	PPCODE:
1506	{	987	{
1507	dREQ;	988	dREQ;
1508		989
1509	req->type = ix;	990	req->type = EIO_MKNOD;
1510	req->fh = newSVsv (oldpath);	991	req->sv1 = newSVsv (pathname);
1511	req->data2ptr = SvPVbyte_nolen (req->fh);	992	req->ptr1 = SvPVbyte_nolen (req->sv1);
1512	req->data = newSVsv (newpath);	993	req->int2 = (mode_t)mode;
1513	req->dataptr = SvPVbyte_nolen (req->data);	994	req->offs = dev;
1514		995
1515	REQ_SEND;	996	REQ_SEND;
1516	}	997	}
1517		998
1518	void	999	void
1519	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1000	aio_busy (double delay, SV *callback=&PL_sv_undef)
1520	SV * pathname
1521	SV * callback
1522	UV mode
1523	UV dev
1524	PPCODE:	1001	PPCODE:
1525	{	1002	{
1526	dREQ;	1003	dREQ;
1527		1004
1528	req->type = REQ_MKNOD;	1005	req->type = EIO_BUSY;
1529	req->data = newSVsv (pathname);	1006	req->nv1 = delay < 0. ? 0. : delay;
1530	req->dataptr = SvPVbyte_nolen (req->data);	1007
1531	req->mode = (mode_t)mode;
1532	req->offset = dev;
1533
1534	REQ_SEND;	1008	REQ_SEND;
1535	}	1009	}
1536		1010
1537	void	1011	void
1538	aio_busy (delay,callback=&PL_sv_undef)
1539	double delay
1540	SV * callback
1541	PPCODE:
1542	{
1543	dREQ;
1544
1545	req->type = REQ_BUSY;
1546	req->fd = delay < 0. ? 0 : delay;
1547	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1548
1549	REQ_SEND;
1550	}
1551
1552	void
1553	aio_group (callback=&PL_sv_undef)	1012	aio_group (SV *callback=&PL_sv_undef)
1554	SV * callback
1555	PROTOTYPE: ;$	1013	PROTOTYPE: ;$
1556	PPCODE:	1014	PPCODE:
1557	{	1015	{
1558	dREQ;	1016	dREQ;
1559		1017
1560	req->type = REQ_GROUP;	1018	req->type = EIO_GROUP;
		1019
1561	req_send (req);	1020	req_submit (req);
1562
1563	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1021	XPUSHs (req_sv (req, aio_grp_stash));
1564	}	1022	}
1565		1023
1566	void	1024	void
1567	aio_nop (callback=&PL_sv_undef)	1025	aio_nop (SV *callback=&PL_sv_undef)
1568	SV * callback	1026	ALIAS:
		1027	aio_nop = EIO_NOP
		1028	aio_sync = EIO_SYNC
1569	PPCODE:	1029	PPCODE:
1570	{	1030	{
1571	dREQ;	1031	dREQ;
1572		1032
1573	req->type = REQ_NOP;	1033	req->type = ix;
1574		1034
1575	REQ_SEND;	1035	REQ_SEND;
1576	}	1036	}
1577		1037
1578	int	1038	int
1579	aioreq_pri (int pri = 0)	1039	aioreq_pri (int pri = 0)
1580	PROTOTYPE: ;$	1040	PROTOTYPE: ;$
1581	CODE:	1041	CODE:
1582	RETVAL = next_pri - PRI_BIAS;	1042	RETVAL = next_pri;
1583	if (items > 0)	1043	if (items > 0)
1584	{	1044	{
1585	if (pri < PRI_MIN) pri = PRI_MIN;	1045	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1586	if (pri > PRI_MAX) pri = PRI_MAX;	1046	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1587	next_pri = pri + PRI_BIAS;	1047	next_pri = pri;
1588	}	1048	}
1589	OUTPUT:	1049	OUTPUT:
1590	RETVAL	1050	RETVAL
1591		1051
1592	void	1052	void
1593	aioreq_nice (int nice = 0)	1053	aioreq_nice (int nice = 0)
1594	CODE:	1054	CODE:
1595	nice = next_pri - nice;	1055	nice = next_pri - nice;
1596	if (nice < PRI_MIN) nice = PRI_MIN;	1056	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1597	if (nice > PRI_MAX) nice = PRI_MAX;	1057	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1598	next_pri = nice + PRI_BIAS;	1058	next_pri = nice;
1599		1059
1600	void	1060	void
1601	flush ()	1061	flush ()
1602	PROTOTYPE:	1062	PROTOTYPE:
1603	CODE:	1063	CODE:
1604	while (nreqs)	1064	while (eio_nreqs ())
1605	{	1065	{
1606	poll_wait ();	1066	poll_wait ();
1607	poll_cb (0);	1067	poll_cb ();
1608	}	1068	}
1609		1069
1610	void	1070	int
1611	poll()	1071	poll()
1612	PROTOTYPE:	1072	PROTOTYPE:
1613	CODE:	1073	CODE:
1614	if (nreqs)
1615	{
1616	poll_wait ();	1074	poll_wait ();
1617	poll_cb (0);	1075	RETVAL = poll_cb ();
1618	}	1076	OUTPUT:
		1077	RETVAL
1619		1078
1620	int	1079	int
1621	poll_fileno()	1080	poll_fileno()
1622	PROTOTYPE:	1081	PROTOTYPE:
1623	CODE:	1082	CODE:
1624	RETVAL = respipe [0];	1083	RETVAL = s_epipe_fd (&respipe);
1625	OUTPUT:	1084	OUTPUT:
1626	RETVAL	1085	RETVAL
1627		1086
1628	int	1087	int
1629	poll_cb(...)	1088	poll_cb(...)
…		…
1635		1094
1636	void	1095	void
1637	poll_wait()	1096	poll_wait()
1638	PROTOTYPE:	1097	PROTOTYPE:
1639	CODE:	1098	CODE:
1640	if (nreqs)
1641	poll_wait ();	1099	poll_wait ();
1642		1100
1643	int	1101	int
1644	nreqs()	1102	nreqs()
1645	PROTOTYPE:	1103	PROTOTYPE:
1646	CODE:	1104	CODE:
1647	RETVAL = nreqs;	1105	RETVAL = eio_nreqs ();
1648	OUTPUT:	1106	OUTPUT:
1649	RETVAL	1107	RETVAL
1650		1108
1651	int	1109	int
1652	nready()	1110	nready()
1653	PROTOTYPE:	1111	PROTOTYPE:
1654	CODE:	1112	CODE:
1655	RETVAL = get_nready ();	1113	RETVAL = eio_nready ();
1656	OUTPUT:	1114	OUTPUT:
1657	RETVAL	1115	RETVAL
1658		1116
1659	int	1117	int
1660	npending()	1118	npending()
1661	PROTOTYPE:	1119	PROTOTYPE:
1662	CODE:	1120	CODE:
1663	RETVAL = get_npending ();	1121	RETVAL = eio_npending ();
1664	OUTPUT:	1122	OUTPUT:
1665	RETVAL	1123	RETVAL
1666		1124
1667	int	1125	int
1668	nthreads()	1126	nthreads()
1669	PROTOTYPE:	1127	PROTOTYPE:
1670	CODE:	1128	CODE:
1671	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1129	RETVAL = eio_nthreads ();
1672	RETVAL = started;
1673	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1674	OUTPUT:	1130	OUTPUT:
1675	RETVAL	1131	RETVAL
1676		1132
		1133	int
		1134	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1135	PROTOTYPE: $$$$
		1136	CODE:
		1137	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1138	RETVAL = posix_fadvise (fh, offset, length, advice);
		1139	#else
		1140	RETVAL = errno = ENOSYS;
		1141	#endif
		1142	OUTPUT:
		1143	RETVAL
		1144
		1145	ssize_t
		1146	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1147	PROTOTYPE: $$$$
		1148	CODE:
		1149	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1150	OUTPUT:
		1151	RETVAL
		1152
		1153	void _on_next_submit (SV *cb)
		1154	CODE:
		1155	SvREFCNT_dec (on_next_submit);
		1156	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1157
1677	PROTOTYPES: DISABLE	1158	PROTOTYPES: DISABLE
1678		1159
1679	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1160	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1680		1161
1681	void	1162	void
1682	cancel (aio_req_ornot req)	1163	cancel (aio_req_ornot req)
1683	CODE:	1164	CODE:
1684	req_cancel (req);	1165	eio_cancel (req);
1685		1166
1686	void	1167	void
1687	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1168	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1688	CODE:	1169	PPCODE:
		1170	{
		1171	if (GIMME_V != G_VOID)
		1172	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1173
		1174	if (items > 1)
		1175	{
		1176	SV *cb_cv =get_cb (callback);
		1177
1689	SvREFCNT_dec (req->callback);	1178	SvREFCNT_dec (req->callback);
1690	req->callback = newSVsv (callback);	1179	req->callback = SvREFCNT_inc (cb_cv);
		1180	}
		1181	}
1691		1182
1692	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1183	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1693		1184
1694	void	1185	void
1695	add (aio_req grp, ...)	1186	add (aio_req grp, ...)
1696	PPCODE:	1187	PPCODE:
1697	{	1188	{
1698	int i;	1189	int i;
1699	aio_req req;
1700		1190
1701	if (grp->fd == 2)	1191	if (grp->int1 == 2)
1702	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1192	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1703		1193
1704	for (i = 1; i < items; ++i )	1194	for (i = 1; i < items; ++i )
1705	{	1195	{
		1196	aio_req req;
		1197
1706	if (GIMME_V != G_VOID)	1198	if (GIMME_V != G_VOID)
1707	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1199	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1708		1200
1709	req = SvAIO_REQ (ST (i));	1201	req = SvAIO_REQ (ST (i));
1710		1202
1711	if (req)	1203	if (req)
1712	{	1204	eio_grp_add (grp, req);
1713	++grp->length;
1714	req->grp = grp;
1715
1716	req->grp_prev = 0;
1717	req->grp_next = grp->grp_first;
1718
1719	if (grp->grp_first)
1720	grp->grp_first->grp_prev = req;
1721
1722	grp->grp_first = req;
1723	}
1724	}	1205	}
1725	}	1206	}
1726		1207
1727	void	1208	void
1728	cancel_subs (aio_req_ornot req)	1209	cancel_subs (aio_req_ornot req)
…		…
1737	AV *av;	1218	AV *av;
1738		1219
1739	grp->errorno = errno;	1220	grp->errorno = errno;
1740		1221
1741	av = newAV ();	1222	av = newAV ();
		1223	av_extend (av, items - 1);
1742		1224
1743	for (i = 1; i < items; ++i )	1225	for (i = 1; i < items; ++i )
1744	av_push (av, newSVsv (ST (i)));	1226	av_push (av, newSVsv (ST (i)));
1745		1227
1746	SvREFCNT_dec (grp->data);	1228	SvREFCNT_dec (grp->sv1);
1747	grp->data = (SV *)av;	1229	grp->sv1 = (SV *)av;
1748	}	1230	}
1749		1231
1750	void	1232	void
1751	errno (aio_req grp, int errorno = errno)	1233	errno (aio_req grp, int errorno = errno)
1752	CODE:	1234	CODE:
1753	grp->errorno = errorno;	1235	grp->errorno = errorno;
1754		1236
1755	void	1237	void
1756	limit (aio_req grp, int limit)	1238	limit (aio_req grp, int limit)
1757	CODE:	1239	CODE:
1758	grp->fd2 = limit;	1240	eio_grp_limit (grp, limit);
1759	aio_grp_feed (grp);
1760		1241
1761	void	1242	void
1762	feed (aio_req grp, SV *callback=&PL_sv_undef)	1243	feed (aio_req grp, SV *callback=&PL_sv_undef)
1763	CODE:	1244	CODE:
1764	{	1245	{
1765	SvREFCNT_dec (grp->fh2);	1246	SvREFCNT_dec (grp->sv2);
1766	grp->fh2 = newSVsv (callback);	1247	grp->sv2 = newSVsv (callback);
		1248	grp->feed = aio_grp_feed;
1767		1249
1768	if (grp->fd2 <= 0)	1250	if (grp->int2 <= 0)
1769	grp->fd2 = 2;	1251	grp->int2 = 2;
1770		1252
1771	aio_grp_feed (grp);	1253	eio_grp_limit (grp, grp->int2);
1772	}	1254	}
1773		1255

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