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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.105 by root, Sun Jul 8 11:12:15 2007 UTC vs.
Revision 1.170 by root, Wed Aug 4 16:09:36 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
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
18	#ifdef _WIN32	28	#ifdef _WIN32
19		29
20	# define SIGIO 0	30	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	31	# undef malloc
23	#undef free	32	# undef free
24		33
25	// perl overrides all those nice win32 functions	34	// perl overrides all those nice win32 functions
26	# undef open	35	# undef open
27	# undef read	36	# undef read
28	# undef write	37	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
56		65
57	#else	66	#else
58		67
59	# include "autoconf/config.h"
60	# include <sys/time.h>	68	# include <sys/time.h>
61	# include <sys/select.h>	69	# include <sys/select.h>
62	# include <unistd.h>	70	# include <unistd.h>
63	# include <utime.h>	71	# include <utime.h>
64	# include <signal.h>	72	# include <signal.h>
65	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
66		74
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	75	#endif
82	#endif
83		76
84	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
85	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
86		82
87	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		84
95	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
97	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
98	#else	90	#else
		91	# define VAL64 NV
99	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
100	#endif	94	#endif
101		95
102	#define dBUF \	96	/*****************************************************************************/
103	char *aio_buf; \	97
104	X_LOCK (wrklock); \	98	#if __GNUC__ >= 3
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_UNLOCK (wrklock); \	100	#else
107	if (!aio_buf) \	101	# define expect(expr,value) (expr)
108	return -1;	102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
109		108
110	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if _XOPEN_SOURCE < 600 || NO_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef ST_NODEV
		171	# define ST_NODEV 0
		172	#endif
		173	#ifndef ST_NOEXEC
		174	# define ST_NOEXEC 0
		175	#endif
		176	#ifndef ST_SYNCHRONOUS
		177	# define ST_SYNCHRONOUS 0
		178	#endif
		179	#ifndef ST_MANDLOCK
		180	# define ST_MANDLOCK 0
		181	#endif
		182	#ifndef ST_WRITE
		183	# define ST_WRITE 0
		184	#endif
		185	#ifndef ST_APPEND
		186	# define ST_APPEND 0
		187	#endif
		188	#ifndef ST_IMMUTABLE
		189	# define ST_IMMUTABLE 0
		190	#endif
		191	#ifndef ST_NOATIME
		192	# define ST_NOATIME 0
		193	#endif
		194	#ifndef ST_NODIRATIME
		195	# define ST_NODIRATIME 0
		196	#endif
		197	#ifndef ST_RELATIME
		198	# define ST_RELATIME 0
		199	#endif
		200
		201	#ifndef MCL_CURRENT
		202	# define MCL_CURRENT 0
		203	#endif
		204	#ifndef MCL_FUTURE
		205	# define MCL_FUTURE 0
		206	#endif
		207
		208	#ifndef MAP_ANONYMOUS
		209	# ifdef MAP_ANON
		210	# define MAP_ANONYMOUS MAP_ANON
		211	# else
		212	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		213	# endif
		214	#endif
		215	#ifndef MAP_HUGETLB
		216	# define MAP_HUGETLB 0
		217	#endif
		218	#ifndef MAP_LOCKED
		219	# define MAP_LOCKED 0
		220	#endif
		221	#ifndef MAP_NORESERVE
		222	# define MAP_NORESERVE 0
		223	#endif
		224	#ifndef MAP_POPULATE
		225	# define MAP_POPULATE 0
		226	#endif
		227	#ifndef MAP_NONBLOCK
		228	# define MAP_NONBLOCK 0
		229	#endif
		230
		231	#ifndef PAGESIZE
		232	# define PAGESIZE sysconf (_SC_PAGESIZE)
		233	#endif
		234
		235	static int req_invoke (eio_req *req);
		236	#define EIO_FINISH(req) req_invoke (req)
		237	static void req_destroy (eio_req *grp);
		238	#define EIO_DESTROY(req) req_destroy (req)
111		239
112	enum {	240	enum {
113	REQ_QUIT,	241	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};	242	};
129		243
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	244	#include "libeio/eio.c"
131	#define AIO_GRP_KLASS "IO::AIO::GRP"
132		245
133	typedef struct aio_cb
134	{
135	struct aio_cb *volatile next;
136
137	SV *callback;
138	SV *sv1, *sv2;
139	void *ptr1, *ptr2;
140	off_t offs;
141	size_t size;
142	ssize_t result;
143	double nv1, nv2;
144
145	STRLEN stroffset;
146	int type;
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150
151	unsigned char flags;
152	unsigned char pri;
153
154	SV *self; /* the perl counterpart of this request, if any */
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
156	} aio_cb;
157
158	enum {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};
163
164	typedef aio_cb *aio_req;	246	typedef eio_req *aio_req;
165	typedef aio_cb *aio_req_ornot;	247	typedef eio_req *aio_req_ornot;
166		248
167	enum {	249	static SV *on_next_submit;
168	PRI_MIN = -4,	250	static int next_pri = EIO_PRI_DEFAULT;
169	PRI_MAX = 4,	251	static int max_outstanding;
170		252
171	DEFAULT_PRI = 0,	253	static s_epipe respipe;
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175		254
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187
188	static thread_t main_tid;
189	static int main_sig;
190	static int block_sig_level;
191
192	void block_sig ()
193	{
194	sigset_t ss;
195
196	if (block_sig_level++)
197	return;
198
199	if (!main_sig)
200	return;
201
202	sigemptyset (&ss);
203	sigaddset (&ss, main_sig);
204	pthread_sigmask (SIG_BLOCK, &ss, 0);
205	}
206
207	void unblock_sig ()
208	{
209	sigset_t ss;
210
211	if (--block_sig_level)
212	return;
213
214	if (!main_sig)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224	static unsigned int started, idle, wanted;
225
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{
247	closedir (wrk->dirp);
248	wrk->dirp = 0;
249	}
250
251	if (wrk->dbuf)
252	{
253	free (wrk->dbuf);
254	wrk->dbuf = 0;
255	}
256	}
257
258	static void worker_free (worker *wrk)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe [2], respipe_osf [2];
270
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;
353
354	--q->size;
355
356	for (pri = NUM_PRI; pri--; )
357	{
358	aio_req req = q->qs[pri];
359
360	if (req)
361	{
362	if (!(q->qs[pri] = req->next))
363	q->qe[pri] = 0;
364
365	return req;
366	}
367	}
368
369	abort ();
370	}
371
372	static int poll_cb ();
373	static int req_invoke (aio_req req);
374	static void req_destroy (aio_req req);	255	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	256	static void req_cancel (aio_req req);
376		257
		258	static void want_poll (void)
		259	{
		260	/* write a dummy byte to the pipe so fh becomes ready */
		261	s_epipe_signal (&respipe);
		262	}
		263
		264	static void done_poll (void)
		265	{
		266	/* read any signals sent by the worker threads */
		267	s_epipe_drain (&respipe);
		268	}
		269
377	/* must be called at most once */	270	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	271	static SV *req_sv (aio_req req, HV *stash)
379	{	272	{
380	if (!req->self)	273	if (!req->self)
381	{	274	{
382	req->self = (SV *)newHV ();	275	req->self = (SV *)newHV ();
383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	276	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384	}	277	}
385		278
386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	279	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387	}	280	}
388		281
389	static aio_req SvAIO_REQ (SV *sv)	282	static aio_req SvAIO_REQ (SV *sv)
390	{	283	{
391	MAGIC *mg;	284	MAGIC *mg;
392		285
393	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	286	if (!SvROK (sv)
		287	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		288	&& SvSTASH (SvRV (sv)) != aio_req_stash
		289	&& !sv_derived_from (sv, "IO::AIO::REQ")))
394	croak ("object of class " AIO_REQ_KLASS " expected");	290	croak ("object of class IO::AIO::REQ expected");
395		291
396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	292	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397		293
398	return mg ? (aio_req)mg->mg_ptr : 0;	294	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	295	}
400		296
401	static void aio_grp_feed (aio_req grp)	297	static void aio_grp_feed (aio_req grp)
402	{	298	{
403	block_sig ();	299	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	300	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	301	dSP;
412		302
413	ENTER;	303	ENTER;
414	SAVETMPS;	304	SAVETMPS;
415	PUSHMARK (SP);	305	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	306	XPUSHs (req_sv (grp, aio_grp_stash));
417	PUTBACK;	307	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	308	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	309	SPAGAIN;
420	FREETMPS;	310	FREETMPS;
421	LEAVE;	311	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	312	}
432
433	unblock_sig ();
434	}	313	}
435		314
436	static void aio_grp_dec (aio_req grp)	315	static void req_submit (eio_req *req)
437	{	316	{
438	--grp->size;	317	eio_submit (req);
439		318
440	/* call feeder, if applicable */	319	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	320	{
446	block_sig ();	321	dSP;
		322	SV *cb = sv_2mortal (on_next_submit);
447		323
448	if (!req_invoke (grp))	324	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		325
455	req_destroy (grp);	326	PUSHMARK (SP);
456	unblock_sig ();	327	PUTBACK;
		328	call_sv (cb, G_DISCARD | G_EVAL);
457	}	329	}
458	}	330	}
459		331
460	static int req_invoke (aio_req req)	332	static int req_invoke (eio_req *req)
461	{	333	{
462	dSP;
463
464	if (req->flags & FLAG_SV2_RO_OFF)	334	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	335	SvREADONLY_off (req->sv2);
466		336
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	337	if (!EIO_CANCELLED (req) && req->callback)
468	{	338	{
		339	dSP;
		340	static SV *sv_result_cache; /* caches the result integer SV */
		341	SV *sv_result;
		342
469	ENTER;	343	ENTER;
470	SAVETMPS;	344	SAVETMPS;
471	PUSHMARK (SP);	345	PUSHMARK (SP);
472	EXTEND (SP, 1);	346	EXTEND (SP, 1);
473		347
		348	/* do not recreate the result IV from scratch each time */
		349	if (expect_true (sv_result_cache))
		350	{
		351	sv_result = sv_result_cache; sv_result_cache = 0;
		352	SvIV_set (sv_result, req->result);
		353	}
		354	else
		355	{
		356	sv_result = newSViv (req->result);
		357	SvREADONLY_on (sv_result);
		358	}
		359
474	switch (req->type)	360	switch (req->type)
475	{	361	{
476	case REQ_READDIR:	362	case EIO_READDIR:
477	{	363	{
478	SV *rv = &PL_sv_undef;	364	SV *rv = &PL_sv_undef;
479		365
480	if (req->result >= 0)	366	if (req->result >= 0)
481	{	367	{
482	int i;	368	int i;
483	char *buf = req->ptr2;	369	char *names = (char *)req->ptr2;
		370	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484	AV *av = newAV ();	371	AV *av = newAV ();
485		372
486	av_extend (av, req->result - 1);	373	av_extend (av, req->result - 1);
487		374
488	for (i = 0; i < req->result; ++i)	375	for (i = 0; i < req->result; ++i)
489	{	376	{
490	SV *sv = newSVpv (buf, 0);	377	if (req->int1 & EIO_READDIR_DENTS)
		378	{
		379	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491		380
		381	if (req->int1 & EIO_READDIR_CUSTOM2)
		382	{
		383	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		384	AV *avent = newAV ();
		385
		386	av_extend (avent, 2);
		387
		388	if (!sv_type [ent->type])
		389	{
		390	sv_type [ent->type] = newSViv (ent->type);
		391	SvREADONLY_on (sv_type [ent->type]);
		392	}
		393
		394	av_store (avent, 0, namesv);
		395	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		396	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		397
		398	av_store (av, i, newRV_noinc ((SV *)avent));
		399	}
		400	else
492	av_store (av, i, sv);	401	av_store (av, i, namesv);
		402
		403	++ent;
		404	}
		405	else
		406	{
		407	SV *name = newSVpv (names, 0);
		408	av_store (av, i, name);
493	buf += SvCUR (sv) + 1;	409	names += SvCUR (name) + 1;
		410	}
494	}	411	}
495		412
496	rv = sv_2mortal (newRV_noinc ((SV *)av));	413	rv = sv_2mortal (newRV_noinc ((SV *)av));
497	}	414	}
498		415
499	PUSHs (rv);	416	PUSHs (rv);
		417
		418	if (req->int1 & EIO_READDIR_CUSTOM1)
		419	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500	}	420	}
501	break;	421	break;
502		422
503	case REQ_OPEN:	423	case EIO_OPEN:
504	{	424	{
505	/* convert fd to fh */	425	/* convert fd to fh */
506	SV *fh;	426	SV *fh = &PL_sv_undef;
507		427
508	PUSHs (sv_2mortal (newSViv (req->result)));	428	if (req->result >= 0)
509	PUTBACK;	429	{
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	430	GV *gv = (GV *)sv_newmortal ();
511	SPAGAIN;	431	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		432	char sym [64];
		433	int symlen;
		434
		435	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		436	gv_init (gv, aio_stash, sym, symlen, 0);
512		437
513	fh = POPs;	438	symlen = snprintf (
514	PUSHMARK (SP);	439	sym,
		440	sizeof (sym),
		441	"%s&=%d",
		442	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		443	(int)req->result
		444	);
		445
		446	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		447	fh = (SV *)gv;
		448	}
		449
515	XPUSHs (fh);	450	PUSHs (fh);
516	}	451	}
517	break;	452	break;
518		453
		454	case EIO_STATVFS:
		455	case EIO_FSTATVFS:
		456	{
		457	SV *rv = &PL_sv_undef;
		458
		459	if (req->result >= 0)
		460	{
		461	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		462	HV *hv = newHV ();
		463
		464	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		465
		466	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		467	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		468	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		469	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		470	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		471	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		472	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		473	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		474	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		475	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		476	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		477	}
		478
		479	PUSHs (rv);
		480	}
		481
		482	break;
		483
519	case REQ_GROUP:	484	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	485	req->int1 = 2; /* mark group as finished */
521		486
522	if (req->sv1)	487	if (req->sv1)
523	{	488	{
524	int i;	489	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	493	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	494	PUSHs (*av_fetch (av, i, 0));
530	}	495	}
531	break;	496	break;
532		497
533	case REQ_NOP:	498	case EIO_NOP:
534	case REQ_BUSY:	499	case EIO_BUSY:
535	break;	500	break;
536		501
537	case REQ_READLINK:	502	case EIO_READLINK:
538	if (req->result > 0)	503	if (req->result > 0)
539	{	504	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
540	SvCUR_set (req->sv2, req->result);
541	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);
543	}
544	break;	505	break;
545		506
546	case REQ_STAT:	507	case EIO_STAT:
547	case REQ_LSTAT:	508	case EIO_LSTAT:
548	case REQ_FSTAT:	509	case EIO_FSTAT:
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	510	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
550	PL_laststatval = req->result;	511	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);	512	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));	513	PUSHs (sv_result);
553	break;	514	break;
554		515
555	case REQ_READ:	516	case EIO_READ:
		517	{
556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	518	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557	*SvEND (req->sv2) = 0;	519	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));	520	SvPOK_only (req->sv2);
		521	SvSETMAGIC (req->sv2);
		522	PUSHs (sv_result);
		523	}
559	break;	524	break;
560		525
		526	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		527	if (req->result > 0)
		528	SvIV_set (sv_result, 0);
		529	/* FALLTHROUGH */
		530
561	default:	531	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	532	PUSHs (sv_result);
563	break;	533	break;
564	}	534	}
565		535
566	errno = req->errorno;	536	errno = req->errorno;
567		537
568	PUTBACK;	538	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	539	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	540	SPAGAIN;
		541
		542	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		543	SvREFCNT_dec (sv_result);
		544	else
		545	sv_result_cache = sv_result;
571		546
572	FREETMPS;	547	FREETMPS;
573	LEAVE;	548	LEAVE;
		549
		550	PUTBACK;
574	}	551	}
575		552
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	553	return !!SvTRUE (ERRSV);
591	}	554	}
592		555
593	static void req_destroy (aio_req req)	556	static void req_destroy (aio_req req)
594	{	557	{
595	if (req->self)	558	if (req->self)
…		…
600		563
601	SvREFCNT_dec (req->sv1);	564	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	565	SvREFCNT_dec (req->sv2);
603	SvREFCNT_dec (req->callback);	566	SvREFCNT_dec (req->callback);
604		567
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	568	Safefree (req);
609	}	569	}
610		570
611	static void req_cancel_subs (aio_req grp)	571	static void req_cancel_subs (aio_req grp)
612	{	572	{
613	aio_req sub;	573	aio_req sub;
614		574
615	if (grp->type != REQ_GROUP)	575	if (grp->type != EIO_GROUP)
616	return;	576	return;
617		577
618	SvREFCNT_dec (grp->sv2);	578	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	579	grp->sv2 = 0;
620		580
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	581	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}	582	}
624
625	static void req_cancel (aio_req req)
626	{
627	req->flags |= FLAG_CANCELLED;
628
629	req_cancel_subs (req);
630	}
631
632	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else
635	# define TO_SOCKET(x) (x)
636	#endif
637		583
638	static void	584	static void
639	create_pipe (int fd[2])	585	create_respipe (void)
640	{	586	{
641	#ifdef _WIN32	587	if (s_epipe_renew (&respipe))
642	int arg = 1;
643	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, fd)
644	|| ioctlsocket (TO_SOCKET (fd [0]), FIONBIO, &arg)
645	|| ioctlsocket (TO_SOCKET (fd [1]), FIONBIO, &arg))
646	#else
647	if (pipe (fd)
648	|| fcntl (fd [0], F_SETFL, O_NONBLOCK)
649	|| fcntl (fd [1], F_SETFL, O_NONBLOCK))
650	#endif
651	croak ("unable to initialize result pipe");	588	croak ("IO::AIO: unable to initialize result pipe");
652
653	respipe_osf [0] = TO_SOCKET (respipe [0]);
654	respipe_osf [1] = TO_SOCKET (respipe [1]);
655	}	589	}
656		590
657	X_THREAD_PROC (aio_proc);
658
659	static void start_thread (void)
660	{
661	worker *wrk = calloc (1, sizeof (worker));
662
663	if (!wrk)
664	croak ("unable to allocate worker thread data");
665
666	X_LOCK (wrklock);
667
668	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
669	{
670	wrk->prev = &wrk_first;
671	wrk->next = wrk_first.next;
672	wrk_first.next->prev = wrk;
673	wrk_first.next = wrk;
674	++started;
675	}
676	else
677	free (wrk);
678
679	X_UNLOCK (wrklock);
680	}
681
682	static void maybe_start_thread ()
683	{
684	if (get_nthreads () >= wanted)
685	return;
686
687	/* todo: maybe use idle here, but might be less exact */
688	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
689	return;
690
691	start_thread ();
692	}
693
694	static void req_send (aio_req req)
695	{
696	block_sig ();
697
698	++nreqs;
699
700	X_LOCK (reqlock);
701	++nready;
702	reqq_push (&req_queue, req);
703	X_COND_SIGNAL (reqwait);
704	X_UNLOCK (reqlock);
705
706	unblock_sig ();
707
708	maybe_start_thread ();
709	}
710
711	static void end_thread (void)
712	{
713	aio_req req;
714
715	Newz (0, req, 1, aio_cb);
716
717	req->type = REQ_QUIT;
718	req->pri = PRI_MAX + PRI_BIAS;
719
720	X_LOCK (reqlock);
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	X_LOCK (wrklock);
726	--started;
727	X_UNLOCK (wrklock);
728	}
729
730	static void set_max_idle (int nthreads)
731	{
732	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
733	max_idle = nthreads <= 0 ? 1 : nthreads;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
735	}
736
737	static void min_parallel (int nthreads)
738	{
739	if (wanted < nthreads)
740	wanted = nthreads;
741	}
742
743	static void max_parallel (int nthreads)
744	{
745	if (wanted > nthreads)
746	wanted = nthreads;
747
748	while (started > wanted)
749	end_thread ();
750	}
751
752	static void poll_wait ()	591	static void poll_wait (void)
753	{	592	{
754	fd_set rfd;
755
756	while (nreqs)	593	while (eio_nreqs ())
757	{	594	{
758	int size;	595	int size;
759	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	596
		597	X_LOCK (reslock);
760	size = res_queue.size;	598	size = res_queue.size;
761	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	599	X_UNLOCK (reslock);
762		600
763	if (size)	601	if (size)
764	return;	602	return;
765		603
766	maybe_start_thread ();	604	etp_maybe_start_thread ();
767		605
768	FD_ZERO (&rfd);	606	s_epipe_wait (&respipe);
769	FD_SET (respipe [0], &rfd);
770
771	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
772	}	607	}
773	}	608	}
774		609
775	static int poll_cb ()	610	static int poll_cb (void)
776	{	611	{
777	dSP;
778	int count = 0;
779	int maxreqs = max_poll_reqs;
780	int do_croak = 0;
781	struct timeval tv_start, tv_now;
782	aio_req req;
783
784	if (max_poll_time)
785	gettimeofday (&tv_start, 0);
786
787	block_sig ();
788
789	for (;;)	612	for (;;)
790	{	613	{
791	for (;;)	614	int res = eio_poll ();
792	{
793	maybe_start_thread ();
794		615
795	X_LOCK (reslock);	616	if (res > 0)
796	req = reqq_shift (&res_queue);
797
798	if (req)
799	{
800	--npending;
801
802	if (!res_queue.size)
803	{
804	/* read any signals sent by the worker threads */
805	char buf [4];
806	while (respipe_read (respipe [0], buf, 4) == 4)
807	;
808	}
809	}
810
811	X_UNLOCK (reslock);
812
813	if (!req)
814	break;
815
816	--nreqs;
817
818	if (req->type == REQ_GROUP && req->size)
819	{
820	req->int1 = 1; /* mark request as delayed */
821	continue;
822	}
823	else
824	{
825	if (!req_invoke (req))
826	{
827	req_destroy (req);
828	unblock_sig ();
829	croak (0);	617	croak (0);
830	}
831		618
832	count++;	619	if (!max_outstanding || max_outstanding > eio_nreqs ())
833	}	620	return res;
834
835	req_destroy (req);
836
837	if (maxreqs && !--maxreqs)
838	break;
839
840	if (max_poll_time)
841	{
842	gettimeofday (&tv_now, 0);
843
844	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
845	break;
846	}
847	}
848
849	if (nreqs <= max_outstanding)
850	break;
851		621
852	poll_wait ();	622	poll_wait ();
853
854	++maxreqs;
855	}	623	}
		624	}
856		625
857	unblock_sig ();	626	static void atfork_child (void)
858	return count;	627	{
		628	create_respipe ();
859	}	629	}
860		630
861	/*****************************************************************************/	631	/*****************************************************************************/
862	/* work around various missing functions */
863		632
864	#if !HAVE_PREADWRITE	633	#if !_POSIX_MAPPED_FILES
865	# define pread aio_pread	634	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
866	# define pwrite aio_pwrite	635	# define munmap(addr,length) (errno = ENOSYS, -1)
867
868	/*
869	* make our pread/pwrite safe against themselves, but not against
870	* normal read/write by using a mutex. slows down execution a lot,
871	* but that's your problem, not mine.
872	*/
873	static mutex_t preadwritelock = X_MUTEX_INIT;
874
875	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
876	{
877	ssize_t res;
878	off_t ooffset;
879
880	X_LOCK (preadwritelock);
881	ooffset = lseek (fd, 0, SEEK_CUR);
882	lseek (fd, offset, SEEK_SET);
883	res = read (fd, buf, count);
884	lseek (fd, ooffset, SEEK_SET);
885	X_UNLOCK (preadwritelock);
886
887	return res;
888	}
889
890	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
891	{
892	ssize_t res;
893	off_t ooffset;
894
895	X_LOCK (preadwritelock);
896	ooffset = lseek (fd, 0, SEEK_CUR);
897	lseek (fd, offset, SEEK_SET);
898	res = write (fd, buf, count);
899	lseek (fd, offset, SEEK_SET);
900	X_UNLOCK (preadwritelock);
901
902	return res;
903	}
904	#endif
905
906	#ifndef HAVE_FUTIMES
907
908	# define utimes(path,times) aio_utimes (path, times)
909	# define futimes(fd,times) aio_futimes (fd, times)
910
911	int aio_utimes (const char *filename, const struct timeval times[2])
912	{
913	if (times)
914	{
915	struct utimbuf buf;
916
917	buf.actime = times[0].tv_sec;
918	buf.modtime = times[1].tv_sec;
919
920	return utime (filename, &buf);
921	}
922	else
923	return utime (filename, 0);
924	}
925
926	int aio_futimes (int fd, const struct timeval tv[2])
927	{
928	errno = ENOSYS;
929	return -1;
930	}
931
932	#endif
933
934	#if !HAVE_FDATASYNC
935	# define fdatasync fsync
936	#endif
937
938	#if !HAVE_READAHEAD
939	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
940
941	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
942	{
943	size_t todo = count;
944	dBUF;
945
946	while (todo > 0)
947	{
948	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
949
950	pread (fd, aio_buf, len, offset);
951	offset += len;
952	todo -= len;
953	}
954
955	errno = 0;
956	return count;
957	}
958
959	#endif
960
961	#if !HAVE_READDIR_R
962	# define readdir_r aio_readdir_r
963
964	static mutex_t readdirlock = X_MUTEX_INIT;
965
966	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
967	{
968	X_DIRENT *e;
969	int errorno;
970
971	X_LOCK (readdirlock);
972
973	e = readdir (dirp);
974	errorno = errno;
975
976	if (e)
977	{
978	*res = ent;
979	strcpy (ent->d_name, e->d_name);
980	}
981	else
982	*res = 0;
983
984	X_UNLOCK (readdirlock);
985
986	errno = errorno;
987	return e ? 0 : -1;
988	}
989	#endif
990
991	/* sendfile always needs emulation */
992	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
993	{
994	ssize_t res;
995
996	if (!count)
997	return 0;
998
999	#if HAVE_SENDFILE
1000	# if __linux
1001	res = sendfile (ofd, ifd, &offset, count);
1002
1003	# elif __freebsd
1004	/*
1005	* Of course, the freebsd sendfile is a dire hack with no thoughts
1006	* wasted on making it similar to other I/O functions.
1007	*/
1008	{
1009	off_t sbytes;
1010	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1011
1012	if (res < 0 && sbytes)
1013	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1014	res = sbytes;
1015	}
1016
1017	# elif __hpux
1018	res = sendfile (ofd, ifd, offset, count, 0, 0);
1019
1020	# elif __solaris
1021	{
1022	struct sendfilevec vec;
1023	size_t sbytes;
1024
1025	vec.sfv_fd = ifd;
1026	vec.sfv_flag = 0;
1027	vec.sfv_off = offset;
1028	vec.sfv_len = count;
1029
1030	res = sendfilev (ofd, &vec, 1, &sbytes);
1031
1032	if (res < 0 && sbytes)
1033	res = sbytes;
1034	}
1035
1036	# endif	636	#endif
1037	#else
1038	res = -1;
1039	errno = ENOSYS;
1040	#endif
1041		637
1042	if (res < 0	638	#define MMAP_MAGIC PERL_MAGIC_ext
1043	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1044	#if __solaris
1045	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1046	#endif
1047	)
1048	)
1049	{
1050	/* emulate sendfile. this is a major pain in the ass */
1051	dBUF;
1052		639
1053	res = 0;	640	static int
		641	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		642	{
		643	int old_errno = errno;
		644	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		645	errno = old_errno;
1054		646
1055	while (count)	647	mg->mg_obj = 0; /* just in case */
1056	{
1057	ssize_t cnt;
1058
1059	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1060		648
1061	if (cnt <= 0)	649	SvREADONLY_off (sv);
1062	{
1063	if (cnt && !res) res = -1;
1064	break;
1065	}
1066		650
1067	cnt = write (ofd, aio_buf, cnt);	651	if (SvPVX (sv) != mg->mg_ptr)
		652	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1068		653
1069	if (cnt <= 0)	654	SvCUR_set (sv, 0);
1070	{	655	SvPVX (sv) = 0;
1071	if (cnt && !res) res = -1;	656	SvOK_off (sv);
1072	break;
1073	}
1074		657
1075	offset += cnt;
1076	res += cnt;
1077	count -= cnt;
1078	}
1079	}
1080
1081	return res;	658	return 0;
1082	}	659	}
1083		660
1084	/* read a full directory */	661	static MGVTBL mmap_vtbl = {
1085	static void scandir_ (aio_req req, worker *self)	662	0, 0, 0, 0, mmap_free
1086	{	663	};
1087	DIR *dirp;
1088	union
1089	{
1090	X_DIRENT d;
1091	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1092	} *u;
1093	X_DIRENT *entp;
1094	char *name, *names;
1095	int memlen = 4096;
1096	int memofs = 0;
1097	int res = 0;
1098
1099	X_LOCK (wrklock);
1100	self->dirp = dirp = opendir (req->ptr1);
1101	self->dbuf = u = malloc (sizeof (*u));
1102	req->flags |= FLAG_PTR2_FREE;
1103	req->ptr2 = names = malloc (memlen);
1104	X_UNLOCK (wrklock);
1105
1106	if (dirp && u && names)
1107	for (;;)
1108	{
1109	errno = 0;
1110	readdir_r (dirp, &u->d, &entp);
1111
1112	if (!entp)
1113	break;
1114
1115	name = entp->d_name;
1116
1117	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1118	{
1119	int len = strlen (name) + 1;
1120
1121	res++;
1122
1123	while (memofs + len > memlen)
1124	{
1125	memlen *= 2;
1126	X_LOCK (wrklock);
1127	req->ptr2 = names = realloc (names, memlen);
1128	X_UNLOCK (wrklock);
1129
1130	if (!names)
1131	break;
1132	}
1133
1134	memcpy (names + memofs, name, len);
1135	memofs += len;
1136	}
1137	}
1138
1139	if (errno)
1140	res = -1;
1141
1142	req->result = res;
1143	}
1144		664
1145	/*****************************************************************************/	665	/*****************************************************************************/
1146		666
1147	X_THREAD_PROC (aio_proc)	667	static SV *
		668	get_cb (SV *cb_sv)
1148	{	669	{
1149	{//D	670	SvGETMAGIC (cb_sv);
1150	aio_req req;	671	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1151	struct timespec ts;
1152	worker *self = (worker *)thr_arg;
1153
1154	/* try to distribute timeouts somewhat randomly */
1155	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1156
1157	for (;;)
1158	{
1159	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1160
1161	X_LOCK (reqlock);
1162
1163	for (;;)
1164	{
1165	self->req = req = reqq_shift (&req_queue);
1166
1167	if (req)
1168	break;
1169
1170	++idle;
1171
1172	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1173	== ETIMEDOUT)
1174	{
1175	if (idle > max_idle)
1176	{
1177	--idle;
1178	X_UNLOCK (reqlock);
1179	X_LOCK (wrklock);
1180	--started;
1181	X_UNLOCK (wrklock);
1182	goto quit;
1183	}
1184
1185	/* we are allowed to idle, so do so without any timeout */
1186	X_COND_WAIT (reqwait, reqlock);
1187	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1188	}
1189
1190	--idle;
1191	}
1192
1193	--nready;
1194
1195	X_UNLOCK (reqlock);
1196
1197	errno = 0; /* strictly unnecessary */
1198
1199	if (!(req->flags & FLAG_CANCELLED))
1200	switch (req->type)
1201	{
1202	case REQ_READ: req->result = req->offs >= 0
1203	? pread (req->int1, req->ptr1, req->size, req->offs)
1204	: read (req->int1, req->ptr1, req->size); break;
1205	case REQ_WRITE: req->result = req->offs >= 0
1206	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1207	: write (req->int1, req->ptr1, req->size); break;
1208
1209	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1210	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1211
1212	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1213	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1214	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1215
1216	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1217	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1218	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1219	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1220	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1221	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1222
1223	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1224	case REQ_CLOSE: req->result = close (req->int1); break;
1225	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1226	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1227	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1228	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1229	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1230	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1231	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1232	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1233
1234	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1235	case REQ_FSYNC: req->result = fsync (req->int1); break;
1236	case REQ_READDIR: scandir_ (req, self); break;
1237
1238	case REQ_BUSY:
1239	#ifdef _WIN32
1240	Sleep (req->nv1 * 1000.);
1241	#else
1242	{
1243	struct timeval tv;
1244
1245	tv.tv_sec = req->nv1;
1246	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1247
1248	req->result = select (0, 0, 0, 0, &tv);
1249	}
1250	#endif
1251	break;
1252
1253	case REQ_UTIME:
1254	case REQ_FUTIME:
1255	{
1256	struct timeval tv[2];
1257	struct timeval *times;
1258
1259	if (req->nv1 != -1. || req->nv2 != -1.)
1260	{
1261	tv[0].tv_sec = req->nv1;
1262	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1263	tv[1].tv_sec = req->nv2;
1264	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1265
1266	times = tv;
1267	}
1268	else
1269	times = 0;
1270
1271
1272	req->result = req->type == REQ_FUTIME
1273	? futimes (req->int1, times)
1274	: utimes (req->ptr1, times);
1275	}
1276
1277	case REQ_GROUP:
1278	case REQ_NOP:
1279	break;
1280
1281	case REQ_QUIT:
1282	goto quit;
1283
1284	default:
1285	req->result = -1;
1286	break;
1287	}
1288
1289	req->errorno = errno;
1290
1291	X_LOCK (reslock);
1292
1293	++npending;
1294
1295	if (!reqq_push (&res_queue, req))
1296	{
1297	/* write a dummy byte to the pipe so fh becomes ready */
1298	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1299
1300	/* optionally signal the main thread asynchronously */
1301	if (main_sig)
1302	pthread_kill (main_tid, main_sig);
1303	}
1304
1305	self->req = 0;
1306	worker_clear (self);
1307
1308	X_UNLOCK (reslock);
1309	}
1310
1311	quit:
1312	X_LOCK (wrklock);
1313	worker_free (self);
1314	X_UNLOCK (wrklock);
1315
1316	return 0;
1317	}//D
1318	}
1319
1320	/*****************************************************************************/
1321
1322	static void atfork_prepare (void)
1323	{
1324	X_LOCK (wrklock);
1325	X_LOCK (reqlock);
1326	X_LOCK (reslock);
1327	#if !HAVE_PREADWRITE
1328	X_LOCK (preadwritelock);
1329	#endif
1330	#if !HAVE_READDIR_R
1331	X_LOCK (readdirlock);
1332	#endif
1333	}
1334
1335	static void atfork_parent (void)
1336	{
1337	#if !HAVE_READDIR_R
1338	X_UNLOCK (readdirlock);
1339	#endif
1340	#if !HAVE_PREADWRITE
1341	X_UNLOCK (preadwritelock);
1342	#endif
1343	X_UNLOCK (reslock);
1344	X_UNLOCK (reqlock);
1345	X_UNLOCK (wrklock);
1346	}
1347
1348	static void atfork_child (void)
1349	{
1350	aio_req prv;
1351
1352	while (prv = reqq_shift (&req_queue))
1353	req_destroy (prv);
1354
1355	while (prv = reqq_shift (&res_queue))
1356	req_destroy (prv);
1357
1358	while (wrk_first.next != &wrk_first)
1359	{
1360	worker *wrk = wrk_first.next;
1361
1362	if (wrk->req)
1363	req_destroy (wrk->req);
1364
1365	worker_clear (wrk);
1366	worker_free (wrk);
1367	}
1368
1369	started = 0;
1370	idle = 0;
1371	nreqs = 0;
1372	nready = 0;
1373	npending = 0;
1374
1375	respipe_close (respipe [0]);
1376	respipe_close (respipe [1]);
1377
1378	create_pipe (respipe);
1379
1380	atfork_parent ();
1381	}	672	}
1382		673
1383	#define dREQ \	674	#define dREQ \
		675	SV *cb_cv; \
1384	aio_req req; \	676	aio_req req; \
1385	int req_pri = next_pri; \	677	int req_pri = next_pri; \
1386	next_pri = DEFAULT_PRI + PRI_BIAS; \	678	next_pri = EIO_PRI_DEFAULT; \
1387	\	679	\
1388	if (SvOK (callback) && !SvROK (callback)) \	680	cb_cv = get_cb (callback); \
1389	croak ("callback must be undef or of reference type"); \
1390	\	681	\
1391	Newz (0, req, 1, aio_cb); \	682	Newz (0, req, 1, eio_req); \
1392	if (!req) \	683	if (!req) \
1393	croak ("out of memory during aio_req allocation"); \	684	croak ("out of memory during eio_req allocation"); \
1394	\	685	\
1395	req->callback = newSVsv (callback); \	686	req->callback = SvREFCNT_inc (cb_cv); \
1396	req->pri = req_pri	687	req->pri = req_pri
1397		688
1398	#define REQ_SEND \	689	#define REQ_SEND \
		690	PUTBACK; \
1399	req_send (req); \	691	req_submit (req); \
		692	SPAGAIN; \
1400	\	693	\
1401	if (GIMME_V != G_VOID) \	694	if (GIMME_V != G_VOID) \
1402	XPUSHs (req_sv (req, AIO_REQ_KLASS));	695	XPUSHs (req_sv (req, aio_req_stash));
1403		696
1404	MODULE = IO::AIO PACKAGE = IO::AIO	697	MODULE = IO::AIO PACKAGE = IO::AIO
1405		698
1406	PROTOTYPES: ENABLE	699	PROTOTYPES: ENABLE
1407		700
1408	BOOT:	701	BOOT:
1409	{	702	{
1410	HV *stash = gv_stashpv ("IO::AIO", 1);	703	static const struct {
1411		704	const char *name;
1412	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	705	IV iv;
1413	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	706	} *civ, const_iv[] = {
1414	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	707	# define const_niv(name, value) { # name, (IV) value },
1415	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	708	# define const_iv(name) { # name, (IV) name },
1416	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	709	# define const_eio(name) { # name, (IV) EIO_ ## name },
		710	const_iv (EXDEV)
		711	const_iv (ENOSYS)
		712	const_iv (O_RDONLY)
		713	const_iv (O_WRONLY)
		714	const_iv (O_RDWR)
		715	const_iv (O_CREAT)
		716	const_iv (O_TRUNC)
		717	const_iv (O_EXCL)
		718	const_iv (O_APPEND)
1417	#ifdef _WIN32	719	#ifndef _WIN32
1418	X_MUTEX_CHECK (wrklock);	720	const_iv (S_IFIFO)
1419	X_MUTEX_CHECK (reslock);
1420	X_MUTEX_CHECK (reqlock);
1421	X_MUTEX_CHECK (reqwait);
1422	X_MUTEX_CHECK (preadwritelock);
1423	X_MUTEX_CHECK (readdirlock);
1424
1425	X_COND_CHECK (reqwait);
1426	#else
1427	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1428	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1429	#endif	721	#endif
		722	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		723	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		724	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		725	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		726	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		727	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1430		728
1431	create_pipe (respipe);	729	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		730	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		731	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		732	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		733	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
1432		734
1433	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	735	const_iv (ST_RDONLY)
		736	const_iv (ST_NOSUID)
		737	const_iv (ST_NODEV)
		738	const_iv (ST_NOEXEC)
		739	const_iv (ST_SYNCHRONOUS)
		740	const_iv (ST_MANDLOCK)
		741	const_iv (ST_WRITE)
		742	const_iv (ST_APPEND)
		743	const_iv (ST_IMMUTABLE)
		744	const_iv (ST_NOATIME)
		745	const_iv (ST_NODIRATIME)
		746	const_iv (ST_RELATIME)
		747
		748	const_iv (PROT_EXEC)
		749	const_iv (PROT_NONE)
		750	const_iv (PROT_READ)
		751	const_iv (PROT_WRITE)
		752
		753	/*const_iv (MAP_FIXED)*/
		754	const_iv (MAP_PRIVATE)
		755	const_iv (MAP_SHARED)
		756	const_iv (MAP_ANONYMOUS)
		757
		758	/* linuxish */
		759	const_iv (MAP_HUGETLB)
		760	const_iv (MAP_LOCKED)
		761	const_iv (MAP_NORESERVE)
		762	const_iv (MAP_POPULATE)
		763	const_iv (MAP_NONBLOCK)
		764
		765	const_iv (MCL_FUTURE)
		766	const_iv (MCL_CURRENT)
		767
		768	const_eio (MS_ASYNC)
		769	const_eio (MS_INVALIDATE)
		770	const_eio (MS_SYNC)
		771
		772	const_eio (MT_MODIFY)
		773
		774	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		775	const_eio (SYNC_FILE_RANGE_WRITE)
		776	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		777
		778	const_eio (READDIR_DENTS)
		779	const_eio (READDIR_DIRS_FIRST)
		780	const_eio (READDIR_STAT_ORDER)
		781	const_eio (READDIR_FOUND_UNKNOWN)
		782
		783	const_eio (DT_UNKNOWN)
		784	const_eio (DT_FIFO)
		785	const_eio (DT_CHR)
		786	const_eio (DT_DIR)
		787	const_eio (DT_BLK)
		788	const_eio (DT_REG)
		789	const_eio (DT_LNK)
		790	const_eio (DT_SOCK)
		791	const_eio (DT_WHT)
		792	};
		793
		794	aio_stash = gv_stashpv ("IO::AIO" , 1);
		795	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		796	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		797
		798	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		799	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		800
		801	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		802
		803	create_respipe ();
		804
		805	if (eio_init (want_poll, done_poll) < 0)
		806	croak ("IO::AIO: unable to initialise eio library");
		807
		808	/* atfork child called in fifo order, so before eio's handler */
		809	X_THREAD_ATFORK (0, 0, atfork_child);
1434	}	810	}
1435		811
1436	void	812	void
1437	max_poll_reqs (int nreqs)	813	max_poll_reqs (int nreqs)
1438	PROTOTYPE: $	814	PROTOTYPE: $
1439	CODE:	815	CODE:
1440	max_poll_reqs = nreqs;	816	eio_set_max_poll_reqs (nreqs);
1441		817
1442	void	818	void
1443	max_poll_time (double nseconds)	819	max_poll_time (double nseconds)
1444	PROTOTYPE: $	820	PROTOTYPE: $
1445	CODE:	821	CODE:
1446	max_poll_time = nseconds * AIO_TICKS;	822	eio_set_max_poll_time (nseconds);
1447		823
1448	void	824	void
1449	min_parallel (int nthreads)	825	min_parallel (int nthreads)
1450	PROTOTYPE: $	826	PROTOTYPE: $
		827	CODE:
		828	eio_set_min_parallel (nthreads);
1451		829
1452	void	830	void
1453	max_parallel (int nthreads)	831	max_parallel (int nthreads)
1454	PROTOTYPE: $	832	PROTOTYPE: $
		833	CODE:
		834	eio_set_max_parallel (nthreads);
1455		835
1456	void	836	void
1457	max_idle (int nthreads)	837	max_idle (int nthreads)
1458	PROTOTYPE: $	838	PROTOTYPE: $
1459	CODE:	839	CODE:
1460	set_max_idle (nthreads);	840	eio_set_max_idle (nthreads);
1461		841
1462	int	842	void
1463	max_outstanding (int maxreqs)	843	max_outstanding (int maxreqs)
1464	PROTOTYPE: $	844	PROTOTYPE: $
1465	CODE:	845	CODE:
1466	RETVAL = max_outstanding;
1467	max_outstanding = maxreqs;	846	max_outstanding = maxreqs;
1468	OUTPUT:
1469	RETVAL
1470		847
1471	void	848	void
1472	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	849	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1473	PROTOTYPE: $$$;$	850	PROTOTYPE: $$$;$
1474	PPCODE:	851	PPCODE:
1475	{	852	{
1476	dREQ;	853	dREQ;
1477		854
1478	req->type = REQ_OPEN;	855	req->type = EIO_OPEN;
1479	req->sv1 = newSVsv (pathname);	856	req->sv1 = newSVsv (pathname);
1480	req->ptr1 = SvPVbyte_nolen (req->sv1);	857	req->ptr1 = SvPVbyte_nolen (req->sv1);
1481	req->int1 = flags;	858	req->int1 = flags;
1482	req->mode = mode;	859	req->int2 = mode;
1483		860
1484	REQ_SEND;	861	REQ_SEND;
		862	}
		863
		864	void
		865	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		866	PROTOTYPE: $;$
		867	ALIAS:
		868	aio_fsync = EIO_FSYNC
		869	aio_fdatasync = EIO_FDATASYNC
		870	PPCODE:
		871	{
		872	int fd = s_fileno_croak (fh, 0);
		873	dREQ;
		874
		875	req->type = ix;
		876	req->sv1 = newSVsv (fh);
		877	req->int1 = fd;
		878
		879	REQ_SEND (req);
		880	}
		881
		882	void
		883	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		884	PROTOTYPE: $$$$;$
		885	PPCODE:
		886	{
		887	int fd = s_fileno_croak (fh, 0);
		888	dREQ;
		889
		890	req->type = EIO_SYNC_FILE_RANGE;
		891	req->sv1 = newSVsv (fh);
		892	req->int1 = fd;
		893	req->offs = offset;
		894	req->size = nbytes;
		895	req->int2 = flags;
		896
		897	REQ_SEND (req);
1485	}	898	}
1486		899
1487	void	900	void
1488	aio_close (SV *fh, SV *callback=&PL_sv_undef)	901	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1489	PROTOTYPE: $;$	902	PROTOTYPE: $;$
1490	ALIAS:
1491	aio_close = REQ_CLOSE
1492	aio_fsync = REQ_FSYNC
1493	aio_fdatasync = REQ_FDATASYNC
1494	PPCODE:	903	PPCODE:
1495	{	904	{
		905	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		906	int fd = s_fileno_croak (fh, 0);
1496	dREQ;	907	dREQ;
1497		908
		909	if (close_pipe < 0)
		910	{
		911	int pipefd [2];
		912
		913	if (pipe (pipefd) < 0
		914	|| close (pipefd [1]) < 0
		915	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		916	abort (); /*D*/
		917
		918	close_pipe = pipefd [0];
		919	}
		920
1498	req->type = ix;	921	req->type = EIO_DUP2;
		922	req->int1 = close_pipe;
1499	req->sv1 = newSVsv (fh);	923	req->sv2 = newSVsv (fh);
1500	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	924	req->int2 = fd;
1501		925
1502	REQ_SEND (req);	926	REQ_SEND (req);
1503	}	927	}
1504		928
1505	void	929	void
1506	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	930	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1507	ALIAS:	931	ALIAS:
1508	aio_read = REQ_READ	932	aio_read = EIO_READ
1509	aio_write = REQ_WRITE	933	aio_write = EIO_WRITE
1510	PROTOTYPE: $$$$$;$	934	PROTOTYPE: $$$$$;$
1511	PPCODE:	935	PPCODE:
1512	{	936	{
1513	STRLEN svlen;	937	STRLEN svlen;
		938	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1514	char *svptr = SvPVbyte (data, svlen);	939	char *svptr = SvPVbyte (data, svlen);
1515	UV len = SvUV (length);	940	UV len = SvUV (length);
1516		941
1517	SvUPGRADE (data, SVt_PV);
1518	SvPOK_on (data);
1519
1520	if (dataoffset < 0)	942	if (dataoffset < 0)
1521	dataoffset += svlen;	943	dataoffset += svlen;
1522		944
1523	if (dataoffset < 0 || dataoffset > svlen)	945	if (dataoffset < 0 || dataoffset > svlen)
1524	croak ("dataoffset outside of data scalar");	946	croak ("dataoffset outside of data scalar");
1525		947
1526	if (ix == REQ_WRITE)	948	if (ix == EIO_WRITE)
1527	{	949	{
1528	/* write: check length and adjust. */	950	/* write: check length and adjust. */
1529	if (!SvOK (length) || len + dataoffset > svlen)	951	if (!SvOK (length) || len + dataoffset > svlen)
1530	len = svlen - dataoffset;	952	len = svlen - dataoffset;
1531	}	953	}
1532	else	954	else
1533	{	955	{
1534	/* read: grow scalar as necessary */	956	/* read: check type and grow scalar as necessary */
		957	SvUPGRADE (data, SVt_PV);
1535	svptr = SvGROW (data, len + dataoffset + 1);	958	svptr = SvGROW (data, len + dataoffset + 1);
1536	}	959	}
1537		960
1538	if (len < 0)
1539	croak ("length must not be negative");
1540
1541	{	961	{
1542	dREQ;	962	dREQ;
1543		963
1544	req->type = ix;	964	req->type = ix;
1545	req->sv1 = newSVsv (fh);	965	req->sv1 = newSVsv (fh);
1546	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	966	req->int1 = fd;
1547	: IoOFP (sv_2io (fh)));
1548	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	967	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1549	req->size = len;	968	req->size = len;
1550	req->sv2 = SvREFCNT_inc (data);	969	req->sv2 = SvREFCNT_inc (data);
1551	req->ptr1 = (char *)svptr + dataoffset;	970	req->ptr2 = (char *)svptr + dataoffset;
1552	req->stroffset = dataoffset;	971	req->stroffset = dataoffset;
1553		972
1554	if (!SvREADONLY (data))	973	if (!SvREADONLY (data))
1555	{	974	{
1556	SvREADONLY_on (data);	975	SvREADONLY_on (data);
…		…
1567	PPCODE:	986	PPCODE:
1568	{	987	{
1569	SV *data;	988	SV *data;
1570	dREQ;	989	dREQ;
1571		990
1572	data = newSV (NAME_MAX);
1573	SvPOK_on (data);
1574
1575	req->type = REQ_READLINK;	991	req->type = EIO_READLINK;
1576	req->sv1 = newSVsv (path);	992	req->sv1 = newSVsv (path);
1577	req->ptr2 = SvPVbyte_nolen (req->sv1);	993	req->ptr1 = SvPVbyte_nolen (req->sv1);
1578	req->sv2 = data;
1579	req->ptr1 = SvPVbyte_nolen (data);
1580		994
1581	REQ_SEND;	995	REQ_SEND;
1582	}	996	}
1583		997
1584	void	998	void
1585	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	999	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1586	PROTOTYPE: $$$$;$	1000	PROTOTYPE: $$$$;$
1587	PPCODE:	1001	PPCODE:
1588	{	1002	{
		1003	int ifd = s_fileno_croak (in_fh , 0);
		1004	int ofd = s_fileno_croak (out_fh, 1);
1589	dREQ;	1005	dREQ;
1590		1006
1591	req->type = REQ_SENDFILE;	1007	req->type = EIO_SENDFILE;
1592	req->sv1 = newSVsv (out_fh);	1008	req->sv1 = newSVsv (out_fh);
1593	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1009	req->int1 = ofd;
1594	req->sv2 = newSVsv (in_fh);	1010	req->sv2 = newSVsv (in_fh);
1595	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1011	req->int2 = ifd;
1596	req->offs = SvVAL64 (in_offset);	1012	req->offs = in_offset;
1597	req->size = length;	1013	req->size = length;
1598		1014
1599	REQ_SEND;	1015	REQ_SEND;
1600	}	1016	}
1601		1017
1602	void	1018	void
1603	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1019	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1604	PROTOTYPE: $$$;$	1020	PROTOTYPE: $$$;$
1605	PPCODE:	1021	PPCODE:
1606	{	1022	{
		1023	int fd = s_fileno_croak (fh, 0);
1607	dREQ;	1024	dREQ;
1608		1025
1609	req->type = REQ_READAHEAD;	1026	req->type = EIO_READAHEAD;
1610	req->sv1 = newSVsv (fh);	1027	req->sv1 = newSVsv (fh);
1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1028	req->int1 = fd;
1612	req->offs = SvVAL64 (offset);	1029	req->offs = offset;
1613	req->size = length;	1030	req->size = length;
1614		1031
1615	REQ_SEND;	1032	REQ_SEND;
1616	}	1033	}
1617		1034
1618	void	1035	void
1619	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1036	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1620	ALIAS:	1037	ALIAS:
1621	aio_stat = REQ_STAT	1038	aio_stat = EIO_STAT
1622	aio_lstat = REQ_LSTAT	1039	aio_lstat = EIO_LSTAT
		1040	aio_statvfs = EIO_STATVFS
1623	PPCODE:	1041	PPCODE:
1624	{	1042	{
1625	dREQ;	1043	dREQ;
1626		1044
1627	req->ptr2 = malloc (sizeof (Stat_t));
1628	if (!req->ptr2)
1629	{
1630	req_destroy (req);
1631	croak ("out of memory during aio_stat statdata allocation");
1632	}
1633
1634	req->flags |= FLAG_PTR2_FREE;
1635	req->sv1 = newSVsv (fh_or_path);	1045	req->sv1 = newSVsv (fh_or_path);
1636		1046
1637	if (SvPOK (fh_or_path))	1047	if (SvPOK (req->sv1))
1638	{	1048	{
1639	req->type = ix;	1049	req->type = ix;
1640	req->ptr1 = SvPVbyte_nolen (req->sv1);	1050	req->ptr1 = SvPVbyte_nolen (req->sv1);
1641	}	1051	}
1642	else	1052	else
1643	{	1053	{
1644	req->type = REQ_FSTAT;	1054	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1645	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1055	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1646	}	1056	}
1647		1057
1648	REQ_SEND;	1058	REQ_SEND;
1649	}	1059	}
…		…
1656		1066
1657	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1067	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1658	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1068	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1659	req->sv1 = newSVsv (fh_or_path);	1069	req->sv1 = newSVsv (fh_or_path);
1660		1070
1661	if (SvPOK (fh_or_path))	1071	if (SvPOK (req->sv1))
1662	{	1072	{
1663	req->type = REQ_UTIME;	1073	req->type = EIO_UTIME;
1664	req->ptr1 = SvPVbyte_nolen (req->sv1);	1074	req->ptr1 = SvPVbyte_nolen (req->sv1);
1665	}	1075	}
1666	else	1076	else
1667	{	1077	{
1668	req->type = REQ_FUTIME;	1078	req->type = EIO_FUTIME;
1669	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1079	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1670	}	1080	}
1671		1081
1672	REQ_SEND;	1082	REQ_SEND;
1673	}	1083	}
…		…
1679	dREQ;	1089	dREQ;
1680		1090
1681	req->sv1 = newSVsv (fh_or_path);	1091	req->sv1 = newSVsv (fh_or_path);
1682	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1092	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1683		1093
1684	if (SvPOK (fh_or_path))	1094	if (SvPOK (req->sv1))
1685	{	1095	{
1686	req->type = REQ_TRUNCATE;	1096	req->type = EIO_TRUNCATE;
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);	1097	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688	}	1098	}
1689	else	1099	else
1690	{	1100	{
1691	req->type = REQ_FTRUNCATE;	1101	req->type = EIO_FTRUNCATE;
1692	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1102	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1693	}	1103	}
1694		1104
1695	REQ_SEND;	1105	REQ_SEND;
1696	}	1106	}
1697		1107
1698	void	1108	void
1699	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1109	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1110	ALIAS:
		1111	aio_chmod = EIO_CHMOD
		1112	aio_mkdir = EIO_MKDIR
1700	PPCODE:	1113	PPCODE:
1701	{	1114	{
1702	dREQ;	1115	dREQ;
1703		1116
1704	req->mode = mode;	1117	req->int2 = mode;
1705	req->sv1 = newSVsv (fh_or_path);	1118	req->sv1 = newSVsv (fh_or_path);
1706		1119
1707	if (SvPOK (fh_or_path))	1120	if (SvPOK (req->sv1))
1708	{	1121	{
1709	req->type = REQ_CHMOD;	1122	req->type = ix;
1710	req->ptr1 = SvPVbyte_nolen (req->sv1);	1123	req->ptr1 = SvPVbyte_nolen (req->sv1);
1711	}	1124	}
1712	else	1125	else
1713	{	1126	{
1714	req->type = REQ_FCHMOD;	1127	req->type = EIO_FCHMOD;
1715	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1128	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1716	}	1129	}
1717		1130
1718	REQ_SEND;	1131	REQ_SEND;
1719	}	1132	}
…		…
1726		1139
1727	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1140	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1728	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1141	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1729	req->sv1 = newSVsv (fh_or_path);	1142	req->sv1 = newSVsv (fh_or_path);
1730		1143
1731	if (SvPOK (fh_or_path))	1144	if (SvPOK (req->sv1))
1732	{	1145	{
1733	req->type = REQ_CHOWN;	1146	req->type = EIO_CHOWN;
1734	req->ptr1 = SvPVbyte_nolen (req->sv1);	1147	req->ptr1 = SvPVbyte_nolen (req->sv1);
1735	}	1148	}
1736	else	1149	else
1737	{	1150	{
1738	req->type = REQ_FCHOWN;	1151	req->type = EIO_FCHOWN;
1739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1152	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1740	}	1153	}
1741		1154
1742	REQ_SEND;	1155	REQ_SEND;
1743	}	1156	}
1744		1157
1745	void	1158	void
		1159	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	dREQ;
		1163
		1164	req->type = EIO_READDIR;
		1165	req->sv1 = newSVsv (pathname);
		1166	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1167	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1168
		1169	if (flags & EIO_READDIR_DENTS)
		1170	req->int1 |= EIO_READDIR_CUSTOM2;
		1171
		1172	REQ_SEND;
		1173	}
		1174
		1175	void
1746	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1176	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1747	ALIAS:	1177	ALIAS:
1748	aio_unlink = REQ_UNLINK	1178	aio_unlink = EIO_UNLINK
1749	aio_rmdir = REQ_RMDIR	1179	aio_rmdir = EIO_RMDIR
1750	aio_readdir = REQ_READDIR	1180	aio_readdir = EIO_READDIR
1751	PPCODE:	1181	PPCODE:
1752	{	1182	{
1753	dREQ;	1183	dREQ;
1754		1184
1755	req->type = ix;	1185	req->type = ix;
…		…
1758		1188
1759	REQ_SEND;	1189	REQ_SEND;
1760	}	1190	}
1761		1191
1762	void	1192	void
1763	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1764	PPCODE:
1765	{
1766	dREQ;
1767
1768	req->type = REQ_MKDIR;
1769	req->sv1 = newSVsv (pathname);
1770	req->ptr1 = SvPVbyte_nolen (req->sv1);
1771	req->mode = mode;
1772
1773	REQ_SEND;
1774	}
1775
1776	void
1777	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1193	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1778	ALIAS:	1194	ALIAS:
1779	aio_link = REQ_LINK	1195	aio_link = EIO_LINK
1780	aio_symlink = REQ_SYMLINK	1196	aio_symlink = EIO_SYMLINK
1781	aio_rename = REQ_RENAME	1197	aio_rename = EIO_RENAME
1782	PPCODE:	1198	PPCODE:
1783	{	1199	{
1784	dREQ;	1200	dREQ;
1785		1201
1786	req->type = ix;	1202	req->type = ix;
1787	req->sv2 = newSVsv (oldpath);	1203	req->sv1 = newSVsv (oldpath);
		1204	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1205	req->sv2 = newSVsv (newpath);
1788	req->ptr2 = SvPVbyte_nolen (req->sv2);	1206	req->ptr2 = SvPVbyte_nolen (req->sv2);
1789	req->sv1 = newSVsv (newpath);
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791		1207
1792	REQ_SEND;	1208	REQ_SEND;
1793	}	1209	}
1794		1210
1795	void	1211	void
1796	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1212	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1797	PPCODE:	1213	PPCODE:
1798	{	1214	{
1799	dREQ;	1215	dREQ;
1800		1216
1801	req->type = REQ_MKNOD;	1217	req->type = EIO_MKNOD;
1802	req->sv1 = newSVsv (pathname);	1218	req->sv1 = newSVsv (pathname);
1803	req->ptr1 = SvPVbyte_nolen (req->sv1);	1219	req->ptr1 = SvPVbyte_nolen (req->sv1);
1804	req->mode = (mode_t)mode;	1220	req->int2 = (mode_t)mode;
1805	req->offs = dev;	1221	req->offs = dev;
1806		1222
1807	REQ_SEND;	1223	REQ_SEND;
1808	}	1224	}
1809		1225
1810	void	1226	void
		1227	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1228	ALIAS:
		1229	aio_mtouch = EIO_MTOUCH
		1230	aio_msync = EIO_MSYNC
		1231	PROTOTYPE: $$$$;$
		1232	PPCODE:
		1233	{
		1234	STRLEN svlen;
		1235	UV len = SvUV (length);
		1236	char *svptr = SvPVbyte (data, svlen);
		1237
		1238	if (offset < 0)
		1239	offset += svlen;
		1240
		1241	if (offset < 0 || offset > svlen)
		1242	croak ("offset outside of scalar");
		1243
		1244	if (!SvOK (length) || len + offset > svlen)
		1245	len = svlen - offset;
		1246
		1247	{
		1248	dREQ;
		1249
		1250	req->type = ix;
		1251	req->size = len;
		1252	req->sv2 = SvREFCNT_inc (data);
		1253	req->ptr2 = (char *)svptr + offset;
		1254	req->int1 = flags;
		1255
		1256	REQ_SEND;
		1257	}
		1258	}
		1259
		1260	void
1811	aio_busy (double delay, SV *callback=&PL_sv_undef)	1261	aio_busy (double delay, SV *callback=&PL_sv_undef)
1812	PPCODE:	1262	PPCODE:
1813	{	1263	{
1814	dREQ;	1264	dREQ;
1815		1265
1816	req->type = REQ_BUSY;	1266	req->type = EIO_BUSY;
1817	req->nv1 = delay < 0. ? 0. : delay;	1267	req->nv1 = delay < 0. ? 0. : delay;
1818		1268
1819	REQ_SEND;	1269	REQ_SEND;
1820	}	1270	}
1821		1271
…		…
1824	PROTOTYPE: ;$	1274	PROTOTYPE: ;$
1825	PPCODE:	1275	PPCODE:
1826	{	1276	{
1827	dREQ;	1277	dREQ;
1828		1278
1829	req->type = REQ_GROUP;	1279	req->type = EIO_GROUP;
1830		1280
1831	req_send (req);	1281	req_submit (req);
1832	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1282	XPUSHs (req_sv (req, aio_grp_stash));
1833	}	1283	}
1834		1284
1835	void	1285	void
1836	aio_nop (SV *callback=&PL_sv_undef)	1286	aio_nop (SV *callback=&PL_sv_undef)
		1287	ALIAS:
		1288	aio_nop = EIO_NOP
		1289	aio_sync = EIO_SYNC
1837	PPCODE:	1290	PPCODE:
1838	{	1291	{
1839	dREQ;	1292	dREQ;
1840		1293
1841	req->type = REQ_NOP;	1294	req->type = ix;
1842		1295
1843	REQ_SEND;	1296	REQ_SEND;
1844	}	1297	}
1845		1298
1846	int	1299	int
1847	aioreq_pri (int pri = 0)	1300	aioreq_pri (int pri = 0)
1848	PROTOTYPE: ;$	1301	PROTOTYPE: ;$
1849	CODE:	1302	CODE:
1850	RETVAL = next_pri - PRI_BIAS;	1303	RETVAL = next_pri;
1851	if (items > 0)	1304	if (items > 0)
1852	{	1305	{
1853	if (pri < PRI_MIN) pri = PRI_MIN;	1306	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1854	if (pri > PRI_MAX) pri = PRI_MAX;	1307	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1855	next_pri = pri + PRI_BIAS;	1308	next_pri = pri;
1856	}	1309	}
1857	OUTPUT:	1310	OUTPUT:
1858	RETVAL	1311	RETVAL
1859		1312
1860	void	1313	void
1861	aioreq_nice (int nice = 0)	1314	aioreq_nice (int nice = 0)
1862	CODE:	1315	CODE:
1863	nice = next_pri - nice;	1316	nice = next_pri - nice;
1864	if (nice < PRI_MIN) nice = PRI_MIN;	1317	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1865	if (nice > PRI_MAX) nice = PRI_MAX;	1318	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1866	next_pri = nice + PRI_BIAS;	1319	next_pri = nice;
1867		1320
1868	void	1321	void
1869	flush ()	1322	flush ()
1870	PROTOTYPE:	1323	PROTOTYPE:
1871	CODE:	1324	CODE:
1872	while (nreqs)	1325	while (eio_nreqs ())
1873	{	1326	{
1874	poll_wait ();	1327	poll_wait ();
1875	poll_cb ();	1328	poll_cb ();
1876	}	1329	}
1877		1330
…		…
1886		1339
1887	int	1340	int
1888	poll_fileno()	1341	poll_fileno()
1889	PROTOTYPE:	1342	PROTOTYPE:
1890	CODE:	1343	CODE:
1891	RETVAL = respipe [0];	1344	RETVAL = s_epipe_fd (&respipe);
1892	OUTPUT:	1345	OUTPUT:
1893	RETVAL	1346	RETVAL
1894		1347
1895	int	1348	int
1896	poll_cb(...)	1349	poll_cb(...)
…		…
1904	poll_wait()	1357	poll_wait()
1905	PROTOTYPE:	1358	PROTOTYPE:
1906	CODE:	1359	CODE:
1907	poll_wait ();	1360	poll_wait ();
1908		1361
1909	void
1910	setsig (int signum = SIGIO)
1911	PROTOTYPE: ;$
1912	CODE:
1913	{
1914	if (block_sig_level)
1915	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1916
1917	X_LOCK (reslock);
1918	main_tid = pthread_self ();
1919	main_sig = signum;
1920	X_UNLOCK (reslock);
1921
1922	if (main_sig && npending)
1923	pthread_kill (main_tid, main_sig);
1924	}
1925
1926	void
1927	aio_block (SV *cb)
1928	PROTOTYPE: &
1929	PPCODE:
1930	{
1931	int count;
1932
1933	block_sig ();
1934	PUSHMARK (SP);
1935	PUTBACK;
1936	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1937	SPAGAIN;
1938	unblock_sig ();
1939
1940	if (SvTRUE (ERRSV))
1941	croak (0);
1942
1943	XSRETURN (count);
1944	}
1945
1946	int	1362	int
1947	nreqs()	1363	nreqs()
1948	PROTOTYPE:	1364	PROTOTYPE:
1949	CODE:	1365	CODE:
1950	RETVAL = nreqs;	1366	RETVAL = eio_nreqs ();
1951	OUTPUT:	1367	OUTPUT:
1952	RETVAL	1368	RETVAL
1953		1369
1954	int	1370	int
1955	nready()	1371	nready()
1956	PROTOTYPE:	1372	PROTOTYPE:
1957	CODE:	1373	CODE:
1958	RETVAL = get_nready ();	1374	RETVAL = eio_nready ();
1959	OUTPUT:	1375	OUTPUT:
1960	RETVAL	1376	RETVAL
1961		1377
1962	int	1378	int
1963	npending()	1379	npending()
1964	PROTOTYPE:	1380	PROTOTYPE:
1965	CODE:	1381	CODE:
1966	RETVAL = get_npending ();	1382	RETVAL = eio_npending ();
1967	OUTPUT:	1383	OUTPUT:
1968	RETVAL	1384	RETVAL
1969		1385
1970	int	1386	int
1971	nthreads()	1387	nthreads()
1972	PROTOTYPE:	1388	PROTOTYPE:
1973	CODE:	1389	CODE:
1974	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1390	RETVAL = eio_nthreads ();
1975	RETVAL = started;
1976	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1977	OUTPUT:	1391	OUTPUT:
1978	RETVAL	1392	RETVAL
1979		1393
		1394	int
		1395	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1396	PROTOTYPE: $$$$
		1397	CODE:
		1398	RETVAL = posix_fadvise (fh, offset, length, advice);
		1399	OUTPUT:
		1400	RETVAL
		1401
		1402	ssize_t
		1403	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1404	PROTOTYPE: $$$$
		1405	CODE:
		1406	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1407	OUTPUT:
		1408	RETVAL
		1409
		1410	void
		1411	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1412	PROTOTYPE: $$$$$;$
		1413	PPCODE:
		1414	sv_unmagic (scalar, MMAP_MAGIC);
		1415	{
		1416	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1417	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1418	if (addr == (void *)-1)
		1419	XSRETURN_NO;
		1420
		1421	sv_force_normal (scalar);
		1422
		1423	/* we store the length in mg_obj, as namlen is I32 :/ */
		1424	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1425	->mg_obj = (SV *)length;
		1426
		1427	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1428
		1429	if (!(prot & PROT_WRITE))
		1430	SvREADONLY_on (scalar);
		1431
		1432	if (SvLEN (scalar))
		1433	Safefree (SvPVX (scalar));
		1434
		1435	SvPVX (scalar) = (char *)addr;
		1436	SvCUR_set (scalar, length);
		1437	SvLEN_set (scalar, 0);
		1438	SvPOK_only (scalar);
		1439
		1440	XSRETURN_YES;
		1441	}
		1442
		1443	void
		1444	munmap (SV *scalar)
		1445	PROTOTYPE: $
		1446	CODE:
		1447	sv_unmagic (scalar, MMAP_MAGIC);
		1448
		1449	int
		1450	madvise (SV *scalar, off_t offset, off_t length, IV advice)
		1451	PROTOTYPE: $$$$
		1452	CODE:
		1453	{
		1454	char *addr = SvPV_nolen (scalar) + offset;
		1455
		1456	if (!SvOK (ST (2)))
		1457	length = SvCUR (scalar) - offset;
		1458
		1459	if (addr >= SvEND (scalar) || length <= 0)
		1460	XSRETURN_EMPTY;
		1461
		1462	RETVAL = posix_madvise (addr, length, advice);
		1463	}
		1464	OUTPUT:
		1465	RETVAL
		1466
		1467	int
		1468	mlockall (int flags)
		1469	PROTOTYPE: $
		1470	CODE:
		1471	#if _POSIX_MEMLOCK
		1472	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1473	extern int mallopt (int, int);
		1474	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1475	#endif
		1476	mlockall (flags);
		1477	#else
		1478	RETVAL = -1;
		1479	errno = ENOSYS;
		1480	#endif
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	int
		1485	munlockall ()
		1486	PROTOTYPE:
		1487	CODE:
		1488	#if _POSIX_MEMLOCK
		1489	munlockall ();
		1490	#else
		1491	RETVAL = -1;
		1492	errno = ENOSYS;
		1493	#endif
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void _on_next_submit (SV *cb)
		1498	CODE:
		1499	SvREFCNT_dec (on_next_submit);
		1500	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1501
1980	PROTOTYPES: DISABLE	1502	PROTOTYPES: DISABLE
1981		1503
1982	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1504	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1983		1505
1984	void	1506	void
1985	cancel (aio_req_ornot req)	1507	cancel (aio_req_ornot req)
1986	CODE:	1508	CODE:
1987	req_cancel (req);	1509	eio_cancel (req);
1988		1510
1989	void	1511	void
1990	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1512	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1991	CODE:	1513	PPCODE:
		1514	{
		1515	if (GIMME_V != G_VOID)
		1516	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1517
		1518	if (items > 1)
		1519	{
		1520	SV *cb_cv =get_cb (callback);
		1521
1992	SvREFCNT_dec (req->callback);	1522	SvREFCNT_dec (req->callback);
1993	req->callback = newSVsv (callback);	1523	req->callback = SvREFCNT_inc (cb_cv);
		1524	}
		1525	}
1994		1526
1995	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1996		1528
1997	void	1529	void
1998	add (aio_req grp, ...)	1530	add (aio_req grp, ...)
1999	PPCODE:	1531	PPCODE:
2000	{	1532	{
2001	int i;	1533	int i;
2002	aio_req req;
2003
2004	if (main_sig && !block_sig_level)
2005	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2006		1534
2007	if (grp->int1 == 2)	1535	if (grp->int1 == 2)
2008	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1536	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2009		1537
2010	for (i = 1; i < items; ++i )	1538	for (i = 1; i < items; ++i )
2011	{	1539	{
		1540	aio_req req;
		1541
2012	if (GIMME_V != G_VOID)	1542	if (GIMME_V != G_VOID)
2013	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1543	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2014		1544
2015	req = SvAIO_REQ (ST (i));	1545	req = SvAIO_REQ (ST (i));
2016		1546
2017	if (req)	1547	if (req)
2018	{	1548	eio_grp_add (grp, req);
2019	++grp->size;
2020	req->grp = grp;
2021
2022	req->grp_prev = 0;
2023	req->grp_next = grp->grp_first;
2024
2025	if (grp->grp_first)
2026	grp->grp_first->grp_prev = req;
2027
2028	grp->grp_first = req;
2029	}
2030	}	1549	}
2031	}	1550	}
2032		1551
2033	void	1552	void
2034	cancel_subs (aio_req_ornot req)	1553	cancel_subs (aio_req_ornot req)
…		…
2043	AV *av;	1562	AV *av;
2044		1563
2045	grp->errorno = errno;	1564	grp->errorno = errno;
2046		1565
2047	av = newAV ();	1566	av = newAV ();
		1567	av_extend (av, items - 1);
2048		1568
2049	for (i = 1; i < items; ++i )	1569	for (i = 1; i < items; ++i )
2050	av_push (av, newSVsv (ST (i)));	1570	av_push (av, newSVsv (ST (i)));
2051		1571
2052	SvREFCNT_dec (grp->sv1);	1572	SvREFCNT_dec (grp->sv1);
…		…
2059	grp->errorno = errorno;	1579	grp->errorno = errorno;
2060		1580
2061	void	1581	void
2062	limit (aio_req grp, int limit)	1582	limit (aio_req grp, int limit)
2063	CODE:	1583	CODE:
2064	grp->int2 = limit;	1584	eio_grp_limit (grp, limit);
2065	aio_grp_feed (grp);
2066		1585
2067	void	1586	void
2068	feed (aio_req grp, SV *callback=&PL_sv_undef)	1587	feed (aio_req grp, SV *callback=&PL_sv_undef)
2069	CODE:	1588	CODE:
2070	{	1589	{
2071	SvREFCNT_dec (grp->sv2);	1590	SvREFCNT_dec (grp->sv2);
2072	grp->sv2 = newSVsv (callback);	1591	grp->sv2 = newSVsv (callback);
		1592	grp->feed = aio_grp_feed;
2073		1593
2074	if (grp->int2 <= 0)	1594	if (grp->int2 <= 0)
2075	grp->int2 = 2;	1595	grp->int2 = 2;
2076		1596
2077	aio_grp_feed (grp);	1597	eio_grp_limit (grp, grp->int2);
2078	}	1598	}
2079		1599

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