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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.113 by root, Wed Apr 16 16:45:18 2008 UTC vs.
Revision 1.165 by root, Sun May 9 20:42:55 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	static HV *stash;	96	/*****************************************************************************/
103		97
104	#define dBUF \	98	#if __GNUC__ >= 3
105	char *aio_buf; \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	100	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	101	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	102	#endif
109	if (!aio_buf) \	103
110	return -1;	104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
111		108
112	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	#ifndef ST_NODEV
		146	# define ST_NODEV 0
		147	#endif
		148	#ifndef ST_NOEXEC
		149	# define ST_NOEXEC 0
		150	#endif
		151	#ifndef ST_SYNCHRONOUS
		152	# define ST_SYNCHRONOUS 0
		153	#endif
		154	#ifndef ST_MANDLOCK
		155	# define ST_MANDLOCK 0
		156	#endif
		157	#ifndef ST_WRITE
		158	# define ST_WRITE 0
		159	#endif
		160	#ifndef ST_APPEND
		161	# define ST_APPEND 0
		162	#endif
		163	#ifndef ST_IMMUTABLE
		164	# define ST_IMMUTABLE 0
		165	#endif
		166	#ifndef ST_NOATIME
		167	# define ST_NOATIME 0
		168	#endif
		169	#ifndef ST_NODIRATIME
		170	# define ST_NODIRATIME 0
		171	#endif
		172	#ifndef ST_RELATIME
		173	# define ST_RELATIME 0
		174	#endif
		175
		176	#ifndef MCL_CURRENT
		177	# define MCL_CURRENT 0
		178	#endif
		179	#ifndef MCL_FUTURE
		180	# define MCL_FUTURE 0
		181	#endif
		182
		183	#ifndef MAP_ANONYMOUS
		184	# ifdef MAP_ANON
		185	# define MAP_ANONYMOUS MAP_ANON
		186	# else
		187	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		188	# endif
		189	#endif
		190	#ifndef MAP_HUGETLB
		191	# define MAP_HUGETLB 0
		192	#endif
		193	#ifndef MAP_LOCKED
		194	# define MAP_LOCKED 0
		195	#endif
		196	#ifndef MAP_NORESERVE
		197	# define MAP_NORESERVE 0
		198	#endif
		199	#ifndef MAP_POPULATE
		200	# define MAP_POPULATE 0
		201	#endif
		202	#ifndef MAP_NONBLOCK
		203	# define MAP_NONBLOCK 0
		204	#endif
		205
		206	#ifndef PAGESIZE
		207	# define PAGESIZE sysconf (_SC_PAGESIZE)
		208	#endif
		209
		210	static int req_invoke (eio_req *req);
		211	#define EIO_FINISH(req) req_invoke (req)
		212	static void req_destroy (eio_req *grp);
		213	#define EIO_DESTROY(req) req_destroy (req)
113		214
114	enum {	215	enum {
115	REQ_QUIT,	216	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};	217	};
131		218
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		220
135	typedef struct aio_cb
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;
140	SV *sv1, *sv2;
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;
148	int type;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152
153	unsigned char flags;
154	unsigned char pri;
155
156	SV *self; /* the perl counterpart of this request, if any */
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
158	} aio_cb;
159
160	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};
165
166	typedef aio_cb *aio_req;	221	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
168		223
169	enum {	224	static SV *on_next_submit;
170	PRI_MIN = -4,	225	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	226	static int max_outstanding;
172		227
173	DEFAULT_PRI = 0,	228	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		229
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig (void)
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig (void)
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready (void)
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending (void)
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads (void)
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb (void);
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	230	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	231	static void req_cancel (aio_req req);
378		232
		233	static void want_poll (void)
		234	{
		235	/* write a dummy byte to the pipe so fh becomes ready */
		236	s_epipe_signal (&respipe);
		237	}
		238
		239	static void done_poll (void)
		240	{
		241	/* read any signals sent by the worker threads */
		242	s_epipe_drain (&respipe);
		243	}
		244
379	/* must be called at most once */	245	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
381	{	247	{
382	if (!req->self)	248	if (!req->self)
383	{	249	{
384	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	252	}
387		253
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	255	}
390		256
391	static aio_req SvAIO_REQ (SV *sv)	257	static aio_req SvAIO_REQ (SV *sv)
392	{	258	{
393	MAGIC *mg;	259	MAGIC *mg;
394		260
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	261	if (!SvROK (sv)
		262	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		263	&& SvSTASH (SvRV (sv)) != aio_req_stash
		264	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	265	croak ("object of class IO::AIO::REQ expected");
397		266
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		268
400	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	270	}
402		271
403	static void aio_grp_feed (aio_req grp)	272	static void aio_grp_feed (aio_req grp)
404	{	273	{
405	block_sig ();	274	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	275	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	276	dSP;
414		277
415	ENTER;	278	ENTER;
416	SAVETMPS;	279	SAVETMPS;
417	PUSHMARK (SP);	280	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	281	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	282	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	284	SPAGAIN;
422	FREETMPS;	285	FREETMPS;
423	LEAVE;	286	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	287	}
434
435	unblock_sig ();
436	}	288	}
437		289
438	static void aio_grp_dec (aio_req grp)	290	static void req_submit (eio_req *req)
439	{	291	{
440	--grp->size;	292	eio_submit (req);
441		293
442	/* call feeder, if applicable */	294	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	295	{
448	block_sig ();	296	dSP;
		297	SV *cb = sv_2mortal (on_next_submit);
449		298
450	if (!req_invoke (grp))	299	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		300
457	req_destroy (grp);	301	PUSHMARK (SP);
458	unblock_sig ();	302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
459	}	304	}
460	}	305	}
461		306
462	static int req_invoke (aio_req req)	307	static int req_invoke (eio_req *req)
463	{	308	{
464	dSP;	309	dSP;
465		310
466	if (req->flags & FLAG_SV2_RO_OFF)	311	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	312	SvREADONLY_off (req->sv2);
468		313
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	314	if (!EIO_CANCELLED (req) && req->callback)
470	{	315	{
		316	static SV *sv_result_cache; /* caches the result integer SV */
		317	SV *sv_result;
		318
471	ENTER;	319	ENTER;
472	SAVETMPS;	320	SAVETMPS;
473	PUSHMARK (SP);	321	PUSHMARK (SP);
474	EXTEND (SP, 1);	322	EXTEND (SP, 1);
475		323
		324	/* do not recreate the result IV from scratch each time */
		325	if (expect_true (sv_result_cache))
		326	{
		327	sv_result = sv_result_cache; sv_result_cache = 0;
		328	SvIV_set (sv_result, req->result);
		329	}
		330	else
		331	{
		332	sv_result = newSViv (req->result);
		333	SvREADONLY_on (sv_result);
		334	}
		335
476	switch (req->type)	336	switch (req->type)
477	{	337	{
478	case REQ_READDIR:	338	case EIO_READDIR:
479	{	339	{
480	SV *rv = &PL_sv_undef;	340	SV *rv = &PL_sv_undef;
481		341
482	if (req->result >= 0)	342	if (req->result >= 0)
483	{	343	{
484	int i;	344	int i;
485	char *buf = req->ptr2;	345	char *names = (char *)req->ptr2;
		346	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	347	AV *av = newAV ();
487		348
488	av_extend (av, req->result - 1);	349	av_extend (av, req->result - 1);
489		350
490	for (i = 0; i < req->result; ++i)	351	for (i = 0; i < req->result; ++i)
491	{	352	{
492	SV *sv = newSVpv (buf, 0);	353	if (req->int1 & EIO_READDIR_DENTS)
		354	{
		355	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		356
		357	if (req->int1 & EIO_READDIR_CUSTOM2)
		358	{
		359	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		360	AV *avent = newAV ();
		361
		362	av_extend (avent, 2);
		363
		364	if (!sv_type [ent->type])
		365	{
		366	sv_type [ent->type] = newSViv (ent->type);
		367	SvREADONLY_on (sv_type [ent->type]);
		368	}
		369
		370	av_store (avent, 0, namesv);
		371	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		372	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		373
		374	av_store (av, i, newRV_noinc ((SV *)avent));
		375	}
		376	else
494	av_store (av, i, sv);	377	av_store (av, i, namesv);
		378
		379	++ent;
		380	}
		381	else
		382	{
		383	SV *name = newSVpv (names, 0);
		384	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	385	names += SvCUR (name) + 1;
		386	}
496	}	387	}
497		388
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	389	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	390	}
500		391
501	PUSHs (rv);	392	PUSHs (rv);
		393
		394	if (req->int1 & EIO_READDIR_CUSTOM1)
		395	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	396	}
503	break;	397	break;
504		398
505	case REQ_OPEN:	399	case EIO_OPEN:
506	{	400	{
507	/* convert fd to fh */	401	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	402	SV *fh = &PL_sv_undef;
509		403
510	if (req->result >= 0)	404	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	406	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	407	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	408	char sym [64];
515	int symlen;	409	int symlen;
516		410
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	411	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	412	gv_init (gv, aio_stash, sym, symlen, 0);
519		413
520	symlen = snprintf (	414	symlen = snprintf (
521	sym,	415	sym,
522	sizeof (sym),	416	sizeof (sym),
523	"%s&=%d",	417	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	418	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	419	(int)req->result
526	);	420	);
527		421
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	422	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	423	fh = (SV *)gv;
530	}	424	}
531		425
532	PUSHs (fh);	426	PUSHs (fh);
533	}	427	}
534	break;	428	break;
535		429
		430	case EIO_STATVFS:
		431	case EIO_FSTATVFS:
		432	{
		433	SV *rv = &PL_sv_undef;
		434
		435	if (req->result >= 0)
		436	{
		437	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		438	HV *hv = newHV ();
		439
		440	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		441
		442	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		443	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		444	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		445	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		446	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		447	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		448	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		449	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		450	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		451	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		452	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		453	}
		454
		455	PUSHs (rv);
		456	}
		457
		458	break;
		459
536	case REQ_GROUP:	460	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	461	req->int1 = 2; /* mark group as finished */
538		462
539	if (req->sv1)	463	if (req->sv1)
540	{	464	{
541	int i;	465	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	469	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	470	PUSHs (*av_fetch (av, i, 0));
547	}	471	}
548	break;	472	break;
549		473
550	case REQ_NOP:	474	case EIO_NOP:
551	case REQ_BUSY:	475	case EIO_BUSY:
552	break;	476	break;
553		477
554	case REQ_READLINK:	478	case EIO_READLINK:
555	if (req->result > 0)	479	if (req->result > 0)
556	{	480	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
557	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);
560	}
561	break;	481	break;
562		482
563	case REQ_STAT:	483	case EIO_STAT:
564	case REQ_LSTAT:	484	case EIO_LSTAT:
565	case REQ_FSTAT:	485	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	486	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	487	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	488	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	489	PUSHs (sv_result);
570	break;	490	break;
571		491
572	case REQ_READ:	492	case EIO_READ:
		493	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	494	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	495	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	496	SvPOK_only (req->sv2);
		497	SvSETMAGIC (req->sv2);
		498	PUSHs (sv_result);
		499	}
576	break;	500	break;
577		501
		502	case EIO_DUP2:
		503	if (req->result > 0)
		504	SvIV_set (sv_result, 0);
		505	/* FALLTHROUGH */
		506
578	default:	507	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	508	PUSHs (sv_result);
580	break;	509	break;
581	}	510	}
582		511
583	errno = req->errorno;	512	errno = req->errorno;
584		513
585	PUTBACK;	514	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	515	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	516	SPAGAIN;
588		517
		518	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		519	SvREFCNT_dec (sv_result);
		520	else
		521	sv_result_cache = sv_result;
		522
589	FREETMPS;	523	FREETMPS;
590	LEAVE;	524	LEAVE;
591		525
592	PUTBACK;	526	PUTBACK;
593	}	527	}
594		528
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	529	return !!SvTRUE (ERRSV);
610	}	530	}
611		531
612	static void req_destroy (aio_req req)	532	static void req_destroy (aio_req req)
613	{	533	{
614	if (req->self)	534	if (req->self)
…		…
619		539
620	SvREFCNT_dec (req->sv1);	540	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	541	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	542	SvREFCNT_dec (req->callback);
623		543
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	544	Safefree (req);
628	}	545	}
629		546
630	static void req_cancel_subs (aio_req grp)	547	static void req_cancel_subs (aio_req grp)
631	{	548	{
632	aio_req sub;	549	aio_req sub;
633		550
634	if (grp->type != REQ_GROUP)	551	if (grp->type != EIO_GROUP)
635	return;	552	return;
636		553
637	SvREFCNT_dec (grp->sv2);	554	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	555	grp->sv2 = 0;
639		556
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	557	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	558	}
643
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}
650
651	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else
654	# define TO_SOCKET(x) (x)
655	#endif
656		559
657	static void	560	static void
658	create_respipe (void)	561	create_respipe (void)
659	{	562	{
660	int old_readfd = respipe [0];
661
662	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));
664
665	#ifdef _WIN32
666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667	#else
668	if (pipe (respipe))	563	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	564	croak ("IO::AIO: unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}
694
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread (void)
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}	565	}
789		566
790	static void poll_wait (void)	567	static void poll_wait (void)
791	{	568	{
792	fd_set rfd;
793
794	while (nreqs)	569	while (eio_nreqs ())
795	{	570	{
796	int size;	571	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	572
		573	X_LOCK (reslock);
798	size = res_queue.size;	574	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	575	X_UNLOCK (reslock);
800		576
801	if (size)	577	if (size)
802	return;	578	return;
803		579
804	maybe_start_thread ();	580	etp_maybe_start_thread ();
805		581
806	FD_ZERO (&rfd);	582	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	583	}
811	}	584	}
812		585
813	static int poll_cb (void)	586	static int poll_cb (void)
814	{	587	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	588	for (;;)
828	{	589	{
829	for (;;)	590	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		591
833	X_LOCK (reslock);	592	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	593	croak (0);
868	}
869		594
870	count++;	595	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	596	return res;
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889		597
890	poll_wait ();	598	poll_wait ();
891
892	++maxreqs;
893	}	599	}
		600	}
894		601
895	unblock_sig ();	602	static void atfork_child (void)
896	return count;	603	{
		604	create_respipe ();
897	}	605	}
898		606
899	/*****************************************************************************/	607	/*****************************************************************************/
900	/* work around various missing functions */
901		608
902	#if !HAVE_PREADWRITE	609	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	610	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	611	# define munmap(addr,length) (errno = ENOSYS, -1)
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif	612	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		613
1080	if (res < 0	614	#define MMAP_MAGIC PERL_MAGIC_ext
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182		615
1183	static int	616	static int
1184	aio_close (int fd)	617	mmap_free (pTHX_ SV *sv, MAGIC *mg)
1185	{	618	{
1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	619	int old_errno = errno;
		620	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		621	errno = old_errno;
1187		622
1188	X_LOCK (wrklock);	623	mg->mg_obj = 0; /* just in case */
1189		624
1190	if (close_pipe < 0)	625	SvREADONLY_off (sv);
1191	{	626	SvCUR_set (sv, 0);
1192	int pipefd [2];	627	SvLEN_set (sv, 0);
		628	SvPVX (sv) = 0;
		629	SvOK_off (sv);
1193		630
1194	if (pipe (pipefd) < 0	631	return 0;
1195	|| close (pipefd [1]) < 0
1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
1197	{
1198	X_UNLOCK (wrklock);
1199	return -1;
1200	}
1201
1202	close_pipe = pipefd [0];
1203	}
1204
1205	X_UNLOCK (wrklock);
1206
1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
1208	}	632	}
		633
		634	static MGVTBL mmap_vtbl = {
		635	0, 0, 0, 0, mmap_free
		636	};
1209		637
1210	/*****************************************************************************/	638	/*****************************************************************************/
1211		639
1212	X_THREAD_PROC (aio_proc)	640	static SV *
		641	get_cb (SV *cb_sv)
1213	{	642	{
1214	aio_req req;	643	SvGETMAGIC (cb_sv);
1215	struct timespec ts;	644	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1216	worker *self = (worker *)thr_arg;
1217
1218	/* try to distribute timeouts somewhat randomly */
1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1220
1221	for (;;)
1222	{
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224
1225	X_LOCK (reqlock);
1226
1227	for (;;)
1228	{
1229	self->req = req = reqq_shift (&req_queue);
1230
1231	if (req)
1232	break;
1233
1234	++idle;
1235
1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1237	== ETIMEDOUT)
1238	{
1239	if (idle > max_idle)
1240	{
1241	--idle;
1242	X_UNLOCK (reqlock);
1243	X_LOCK (wrklock);
1244	--started;
1245	X_UNLOCK (wrklock);
1246	goto quit;
1247	}
1248
1249	/* we are allowed to idle, so do so without any timeout */
1250	X_COND_WAIT (reqwait, reqlock);
1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1252	}
1253
1254	--idle;
1255	}
1256
1257	--nready;
1258
1259	X_UNLOCK (reqlock);
1260
1261	errno = 0; /* strictly unnecessary */
1262
1263	if (!(req->flags & FLAG_CANCELLED))
1264	switch (req->type)
1265	{
1266	case REQ_READ: req->result = req->offs >= 0
1267	? pread (req->int1, req->ptr1, req->size, req->offs)
1268	: read (req->int1, req->ptr1, req->size); break;
1269	case REQ_WRITE: req->result = req->offs >= 0
1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1271	: write (req->int1, req->ptr1, req->size); break;
1272
1273	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1275
1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1279
1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1286
1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1297
1298	case REQ_SYNC: req->result = 0; sync (); break;
1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1301
1302	case REQ_READDIR: scandir_ (req, self); break;
1303
1304	case REQ_BUSY:
1305	#ifdef _WIN32
1306	Sleep (req->nv1 * 1000.);
1307	#else
1308	{
1309	struct timeval tv;
1310
1311	tv.tv_sec = req->nv1;
1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1313
1314	req->result = select (0, 0, 0, 0, &tv);
1315	}
1316	#endif
1317	break;
1318
1319	case REQ_UTIME:
1320	case REQ_FUTIME:
1321	{
1322	struct timeval tv[2];
1323	struct timeval *times;
1324
1325	if (req->nv1 != -1. || req->nv2 != -1.)
1326	{
1327	tv[0].tv_sec = req->nv1;
1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1329	tv[1].tv_sec = req->nv2;
1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1331
1332	times = tv;
1333	}
1334	else
1335	times = 0;
1336
1337
1338	req->result = req->type == REQ_FUTIME
1339	? futimes (req->int1, times)
1340	: utimes (req->ptr1, times);
1341	}
1342
1343	case REQ_GROUP:
1344	case REQ_NOP:
1345	break;
1346
1347	case REQ_QUIT:
1348	goto quit;
1349
1350	default:
1351	req->result = -1;
1352	break;
1353	}
1354
1355	req->errorno = errno;
1356
1357	X_LOCK (reslock);
1358
1359	++npending;
1360
1361	if (!reqq_push (&res_queue, req))
1362	{
1363	/* write a dummy byte to the pipe so fh becomes ready */
1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1365
1366	/* optionally signal the main thread asynchronously */
1367	if (main_sig)
1368	pthread_kill (main_tid, main_sig);
1369	}
1370
1371	self->req = 0;
1372	worker_clear (self);
1373
1374	X_UNLOCK (reslock);
1375	}
1376
1377	quit:
1378	X_LOCK (wrklock);
1379	worker_free (self);
1380	X_UNLOCK (wrklock);
1381
1382	return 0;
1383	}
1384
1385	/*****************************************************************************/
1386
1387	static void atfork_prepare (void)
1388	{
1389	X_LOCK (wrklock);
1390	X_LOCK (reqlock);
1391	X_LOCK (reslock);
1392	#if !HAVE_PREADWRITE
1393	X_LOCK (preadwritelock);
1394	#endif
1395	#if !HAVE_READDIR_R
1396	X_LOCK (readdirlock);
1397	#endif
1398	}
1399
1400	static void atfork_parent (void)
1401	{
1402	#if !HAVE_READDIR_R
1403	X_UNLOCK (readdirlock);
1404	#endif
1405	#if !HAVE_PREADWRITE
1406	X_UNLOCK (preadwritelock);
1407	#endif
1408	X_UNLOCK (reslock);
1409	X_UNLOCK (reqlock);
1410	X_UNLOCK (wrklock);
1411	}
1412
1413	static void atfork_child (void)
1414	{
1415	aio_req prv;
1416
1417	while (prv = reqq_shift (&req_queue))
1418	req_destroy (prv);
1419
1420	while (prv = reqq_shift (&res_queue))
1421	req_destroy (prv);
1422
1423	while (wrk_first.next != &wrk_first)
1424	{
1425	worker *wrk = wrk_first.next;
1426
1427	if (wrk->req)
1428	req_destroy (wrk->req);
1429
1430	worker_clear (wrk);
1431	worker_free (wrk);
1432	}
1433
1434	started = 0;
1435	idle = 0;
1436	nreqs = 0;
1437	nready = 0;
1438	npending = 0;
1439
1440	create_respipe ();
1441
1442	atfork_parent ();
1443	}	645	}
1444		646
1445	#define dREQ \	647	#define dREQ \
		648	SV *cb_cv; \
1446	aio_req req; \	649	aio_req req; \
1447	int req_pri = next_pri; \	650	int req_pri = next_pri; \
1448	next_pri = DEFAULT_PRI + PRI_BIAS; \	651	next_pri = EIO_PRI_DEFAULT; \
1449	\	652	\
1450	if (SvOK (callback) && !SvROK (callback)) \	653	cb_cv = get_cb (callback); \
1451	croak ("callback must be undef or of reference type"); \
1452	\	654	\
1453	Newz (0, req, 1, aio_cb); \	655	Newz (0, req, 1, eio_req); \
1454	if (!req) \	656	if (!req) \
1455	croak ("out of memory during aio_req allocation"); \	657	croak ("out of memory during eio_req allocation"); \
1456	\	658	\
1457	req->callback = newSVsv (callback); \	659	req->callback = SvREFCNT_inc (cb_cv); \
1458	req->pri = req_pri	660	req->pri = req_pri
1459		661
1460	#define REQ_SEND \	662	#define REQ_SEND \
		663	PUTBACK; \
1461	req_send (req); \	664	req_submit (req); \
		665	SPAGAIN; \
1462	\	666	\
1463	if (GIMME_V != G_VOID) \	667	if (GIMME_V != G_VOID) \
1464	XPUSHs (req_sv (req, AIO_REQ_KLASS));	668	XPUSHs (req_sv (req, aio_req_stash));
1465		669
1466	MODULE = IO::AIO PACKAGE = IO::AIO	670	MODULE = IO::AIO PACKAGE = IO::AIO
1467		671
1468	PROTOTYPES: ENABLE	672	PROTOTYPES: ENABLE
1469		673
1470	BOOT:	674	BOOT:
1471	{	675	{
1472	stash = gv_stashpv ("IO::AIO", 1);	676	static const struct {
1473		677	const char *name;
1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	678	IV iv;
1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	679	} *civ, const_iv[] = {
1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	680	# define const_niv(name, value) { # name, (IV) value },
1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	681	# define const_iv(name) { # name, (IV) name },
1478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	682	# define const_eio(name) { # name, (IV) EIO_ ## name },
		683	const_iv (EXDEV)
		684	const_iv (ENOSYS)
		685	const_iv (O_RDONLY)
		686	const_iv (O_WRONLY)
		687	const_iv (O_RDWR)
		688	const_iv (O_CREAT)
		689	const_iv (O_TRUNC)
		690	const_iv (O_EXCL)
		691	const_iv (O_APPEND)
1479	#ifdef _WIN32	692	#ifndef _WIN32
1480	X_MUTEX_CHECK (wrklock);	693	const_iv (S_IFIFO)
1481	X_MUTEX_CHECK (reslock);
1482	X_MUTEX_CHECK (reqlock);
1483	X_MUTEX_CHECK (reqwait);
1484	X_MUTEX_CHECK (preadwritelock);
1485	X_MUTEX_CHECK (readdirlock);
1486
1487	X_COND_CHECK (reqwait);
1488	#else
1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1491	#endif	694	#endif
		695	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		696	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		697	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		698	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		699	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		700	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1492		701
		702	const_iv (ST_RDONLY)
		703	const_iv (ST_NOSUID)
		704	const_iv (ST_NODEV)
		705	const_iv (ST_NOEXEC)
		706	const_iv (ST_SYNCHRONOUS)
		707	const_iv (ST_MANDLOCK)
		708	const_iv (ST_WRITE)
		709	const_iv (ST_APPEND)
		710	const_iv (ST_IMMUTABLE)
		711	const_iv (ST_NOATIME)
		712	const_iv (ST_NODIRATIME)
		713	const_iv (ST_RELATIME)
		714
		715	const_iv (PROT_EXEC)
		716	const_iv (PROT_NONE)
		717	const_iv (PROT_READ)
		718	const_iv (PROT_WRITE)
		719
		720	/*const_iv (MAP_FIXED)*/
		721	const_iv (MAP_PRIVATE)
		722	const_iv (MAP_SHARED)
		723	const_iv (MAP_ANONYMOUS)
		724
		725	/* linuxish */
		726	const_iv (MAP_HUGETLB)
		727	const_iv (MAP_LOCKED)
		728	const_iv (MAP_NORESERVE)
		729	const_iv (MAP_POPULATE)
		730	const_iv (MAP_NONBLOCK)
		731
		732	const_iv (MCL_FUTURE)
		733	const_iv (MCL_CURRENT)
		734
		735	const_eio (MS_ASYNC)
		736	const_eio (MS_INVALIDATE)
		737	const_eio (MS_SYNC)
		738
		739	const_eio (MT_MODIFY)
		740
		741	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		742	const_eio (SYNC_FILE_RANGE_WRITE)
		743	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		744
		745	const_eio (READDIR_DENTS)
		746	const_eio (READDIR_DIRS_FIRST)
		747	const_eio (READDIR_STAT_ORDER)
		748	const_eio (READDIR_FOUND_UNKNOWN)
		749
		750	const_eio (DT_UNKNOWN)
		751	const_eio (DT_FIFO)
		752	const_eio (DT_CHR)
		753	const_eio (DT_DIR)
		754	const_eio (DT_BLK)
		755	const_eio (DT_REG)
		756	const_eio (DT_LNK)
		757	const_eio (DT_SOCK)
		758	const_eio (DT_WHT)
		759	};
		760
		761	aio_stash = gv_stashpv ("IO::AIO" , 1);
		762	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		763	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		764
		765	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		766	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		767
		768	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		769
1493	create_respipe ();	770	create_respipe ();
1494		771
1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	772	if (eio_init (want_poll, done_poll) < 0)
		773	croak ("IO::AIO: unable to initialise eio library");
		774
		775	/* atfork child called in fifo order, so before eio's handler */
		776	X_THREAD_ATFORK (0, 0, atfork_child);
1496	}	777	}
1497		778
1498	void	779	void
1499	max_poll_reqs (int nreqs)	780	max_poll_reqs (int nreqs)
1500	PROTOTYPE: $	781	PROTOTYPE: $
1501	CODE:	782	CODE:
1502	max_poll_reqs = nreqs;	783	eio_set_max_poll_reqs (nreqs);
1503		784
1504	void	785	void
1505	max_poll_time (double nseconds)	786	max_poll_time (double nseconds)
1506	PROTOTYPE: $	787	PROTOTYPE: $
1507	CODE:	788	CODE:
1508	max_poll_time = nseconds * AIO_TICKS;	789	eio_set_max_poll_time (nseconds);
1509		790
1510	void	791	void
1511	min_parallel (int nthreads)	792	min_parallel (int nthreads)
1512	PROTOTYPE: $	793	PROTOTYPE: $
		794	CODE:
		795	eio_set_min_parallel (nthreads);
1513		796
1514	void	797	void
1515	max_parallel (int nthreads)	798	max_parallel (int nthreads)
1516	PROTOTYPE: $	799	PROTOTYPE: $
		800	CODE:
		801	eio_set_max_parallel (nthreads);
1517		802
1518	void	803	void
1519	max_idle (int nthreads)	804	max_idle (int nthreads)
1520	PROTOTYPE: $	805	PROTOTYPE: $
1521	CODE:	806	CODE:
1522	set_max_idle (nthreads);	807	eio_set_max_idle (nthreads);
1523		808
1524	int	809	void
1525	max_outstanding (int maxreqs)	810	max_outstanding (int maxreqs)
1526	PROTOTYPE: $	811	PROTOTYPE: $
1527	CODE:	812	CODE:
1528	RETVAL = max_outstanding;
1529	max_outstanding = maxreqs;	813	max_outstanding = maxreqs;
1530	OUTPUT:
1531	RETVAL
1532		814
1533	void	815	void
1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	816	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1535	PROTOTYPE: $$$;$	817	PROTOTYPE: $$$;$
1536	PPCODE:	818	PPCODE:
1537	{	819	{
1538	dREQ;	820	dREQ;
1539		821
1540	req->type = REQ_OPEN;	822	req->type = EIO_OPEN;
1541	req->sv1 = newSVsv (pathname);	823	req->sv1 = newSVsv (pathname);
1542	req->ptr1 = SvPVbyte_nolen (req->sv1);	824	req->ptr1 = SvPVbyte_nolen (req->sv1);
1543	req->int1 = flags;	825	req->int1 = flags;
1544	req->mode = mode;	826	req->int2 = mode;
1545		827
1546	REQ_SEND;	828	REQ_SEND;
1547	}	829	}
1548		830
1549	void	831	void
1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	832	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$	833	PROTOTYPE: $;$
1552	ALIAS:	834	ALIAS:
1553	aio_fsync = REQ_FSYNC	835	aio_fsync = EIO_FSYNC
1554	aio_fdatasync = REQ_FDATASYNC	836	aio_fdatasync = EIO_FDATASYNC
1555	PPCODE:	837	PPCODE:
1556	{	838	{
		839	int fd = s_fileno_croak (fh, 0);
1557	dREQ;	840	dREQ;
1558		841
1559	req->type = ix;	842	req->type = ix;
1560	req->sv1 = newSVsv (fh);	843	req->sv1 = newSVsv (fh);
1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	844	req->int1 = fd;
		845
		846	REQ_SEND (req);
		847	}
		848
		849	void
		850	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		851	PROTOTYPE: $$$$;$
		852	PPCODE:
		853	{
		854	int fd = s_fileno_croak (fh, 0);
		855	dREQ;
		856
		857	req->type = EIO_SYNC_FILE_RANGE;
		858	req->sv1 = newSVsv (fh);
		859	req->int1 = fd;
		860	req->offs = offset;
		861	req->size = nbytes;
		862	req->int2 = flags;
1562		863
1563	REQ_SEND (req);	864	REQ_SEND (req);
1564	}	865	}
1565		866
1566	void	867	void
1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)	868	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1568	PROTOTYPE: $;$	869	PROTOTYPE: $;$
1569	PPCODE:	870	PPCODE:
1570	{	871	{
		872	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		873	int fd = s_fileno_croak (fh, 0);
1571	dREQ;	874	dREQ;
1572		875
		876	if (close_pipe < 0)
		877	{
		878	int pipefd [2];
		879
		880	if (pipe (pipefd) < 0
		881	|| close (pipefd [1]) < 0
		882	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		883	abort (); /*D*/
		884
		885	close_pipe = pipefd [0];
		886	}
		887
1573	req->type = REQ_CLOSE;	888	req->type = EIO_DUP2;
1574	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	889	req->int1 = close_pipe;
		890	req->sv2 = newSVsv (fh);
		891	req->int2 = fd;
1575		892
1576	REQ_SEND (req);	893	REQ_SEND (req);
1577	}	894	}
1578		895
1579	void	896	void
1580	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	897	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1581	ALIAS:	898	ALIAS:
1582	aio_read = REQ_READ	899	aio_read = EIO_READ
1583	aio_write = REQ_WRITE	900	aio_write = EIO_WRITE
1584	PROTOTYPE: $$$$$;$	901	PROTOTYPE: $$$$$;$
1585	PPCODE:	902	PPCODE:
1586	{	903	{
1587	STRLEN svlen;	904	STRLEN svlen;
		905	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1588	char *svptr = SvPVbyte (data, svlen);	906	char *svptr = SvPVbyte (data, svlen);
1589	UV len = SvUV (length);	907	UV len = SvUV (length);
1590		908
1591	SvUPGRADE (data, SVt_PV);
1592	SvPOK_on (data);
1593
1594	if (dataoffset < 0)	909	if (dataoffset < 0)
1595	dataoffset += svlen;	910	dataoffset += svlen;
1596		911
1597	if (dataoffset < 0 || dataoffset > svlen)	912	if (dataoffset < 0 || dataoffset > svlen)
1598	croak ("dataoffset outside of data scalar");	913	croak ("dataoffset outside of data scalar");
1599		914
1600	if (ix == REQ_WRITE)	915	if (ix == EIO_WRITE)
1601	{	916	{
1602	/* write: check length and adjust. */	917	/* write: check length and adjust. */
1603	if (!SvOK (length) || len + dataoffset > svlen)	918	if (!SvOK (length) || len + dataoffset > svlen)
1604	len = svlen - dataoffset;	919	len = svlen - dataoffset;
1605	}	920	}
1606	else	921	else
1607	{	922	{
1608	/* read: grow scalar as necessary */	923	/* read: check type and grow scalar as necessary */
		924	SvUPGRADE (data, SVt_PV);
1609	svptr = SvGROW (data, len + dataoffset + 1);	925	svptr = SvGROW (data, len + dataoffset + 1);
1610	}	926	}
1611		927
1612	if (len < 0)
1613	croak ("length must not be negative");
1614
1615	{	928	{
1616	dREQ;	929	dREQ;
1617		930
1618	req->type = ix;	931	req->type = ix;
1619	req->sv1 = newSVsv (fh);	932	req->sv1 = newSVsv (fh);
1620	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	933	req->int1 = fd;
1621	: IoOFP (sv_2io (fh)));
1622	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	934	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1623	req->size = len;	935	req->size = len;
1624	req->sv2 = SvREFCNT_inc (data);	936	req->sv2 = SvREFCNT_inc (data);
1625	req->ptr1 = (char *)svptr + dataoffset;	937	req->ptr2 = (char *)svptr + dataoffset;
1626	req->stroffset = dataoffset;	938	req->stroffset = dataoffset;
1627		939
1628	if (!SvREADONLY (data))	940	if (!SvREADONLY (data))
1629	{	941	{
1630	SvREADONLY_on (data);	942	SvREADONLY_on (data);
…		…
1641	PPCODE:	953	PPCODE:
1642	{	954	{
1643	SV *data;	955	SV *data;
1644	dREQ;	956	dREQ;
1645		957
1646	data = newSV (NAME_MAX);
1647	SvPOK_on (data);
1648
1649	req->type = REQ_READLINK;	958	req->type = EIO_READLINK;
1650	req->sv1 = newSVsv (path);	959	req->sv1 = newSVsv (path);
1651	req->ptr2 = SvPVbyte_nolen (req->sv1);	960	req->ptr1 = SvPVbyte_nolen (req->sv1);
1652	req->sv2 = data;
1653	req->ptr1 = SvPVbyte_nolen (data);
1654		961
1655	REQ_SEND;	962	REQ_SEND;
1656	}	963	}
1657		964
1658	void	965	void
1659	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	966	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$$;$	967	PROTOTYPE: $$$$;$
1661	PPCODE:	968	PPCODE:
1662	{	969	{
		970	int ifd = s_fileno_croak (in_fh , 0);
		971	int ofd = s_fileno_croak (out_fh, 1);
1663	dREQ;	972	dREQ;
1664		973
1665	req->type = REQ_SENDFILE;	974	req->type = EIO_SENDFILE;
1666	req->sv1 = newSVsv (out_fh);	975	req->sv1 = newSVsv (out_fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	976	req->int1 = ofd;
1668	req->sv2 = newSVsv (in_fh);	977	req->sv2 = newSVsv (in_fh);
1669	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	978	req->int2 = ifd;
1670	req->offs = SvVAL64 (in_offset);	979	req->offs = in_offset;
1671	req->size = length;	980	req->size = length;
1672		981
1673	REQ_SEND;	982	REQ_SEND;
1674	}	983	}
1675		984
1676	void	985	void
1677	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	986	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1678	PROTOTYPE: $$$;$	987	PROTOTYPE: $$$;$
1679	PPCODE:	988	PPCODE:
1680	{	989	{
		990	int fd = s_fileno_croak (fh, 0);
1681	dREQ;	991	dREQ;
1682		992
1683	req->type = REQ_READAHEAD;	993	req->type = EIO_READAHEAD;
1684	req->sv1 = newSVsv (fh);	994	req->sv1 = newSVsv (fh);
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	995	req->int1 = fd;
1686	req->offs = SvVAL64 (offset);	996	req->offs = offset;
1687	req->size = length;	997	req->size = length;
1688		998
1689	REQ_SEND;	999	REQ_SEND;
1690	}	1000	}
1691		1001
1692	void	1002	void
1693	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1003	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1694	ALIAS:	1004	ALIAS:
1695	aio_stat = REQ_STAT	1005	aio_stat = EIO_STAT
1696	aio_lstat = REQ_LSTAT	1006	aio_lstat = EIO_LSTAT
		1007	aio_statvfs = EIO_STATVFS
1697	PPCODE:	1008	PPCODE:
1698	{	1009	{
1699	dREQ;	1010	dREQ;
1700		1011
1701	req->ptr2 = malloc (sizeof (Stat_t));
1702	if (!req->ptr2)
1703	{
1704	req_destroy (req);
1705	croak ("out of memory during aio_stat statdata allocation");
1706	}
1707
1708	req->flags |= FLAG_PTR2_FREE;
1709	req->sv1 = newSVsv (fh_or_path);	1012	req->sv1 = newSVsv (fh_or_path);
1710		1013
1711	if (SvPOK (fh_or_path))	1014	if (SvPOK (req->sv1))
1712	{	1015	{
1713	req->type = ix;	1016	req->type = ix;
1714	req->ptr1 = SvPVbyte_nolen (req->sv1);	1017	req->ptr1 = SvPVbyte_nolen (req->sv1);
1715	}	1018	}
1716	else	1019	else
1717	{	1020	{
1718	req->type = REQ_FSTAT;	1021	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1719	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1022	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1720	}	1023	}
1721		1024
1722	REQ_SEND;	1025	REQ_SEND;
1723	}	1026	}
…		…
1730		1033
1731	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1034	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1732	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1035	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1733	req->sv1 = newSVsv (fh_or_path);	1036	req->sv1 = newSVsv (fh_or_path);
1734		1037
1735	if (SvPOK (fh_or_path))	1038	if (SvPOK (req->sv1))
1736	{	1039	{
1737	req->type = REQ_UTIME;	1040	req->type = EIO_UTIME;
1738	req->ptr1 = SvPVbyte_nolen (req->sv1);	1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
1739	}	1042	}
1740	else	1043	else
1741	{	1044	{
1742	req->type = REQ_FUTIME;	1045	req->type = EIO_FUTIME;
1743	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1744	}	1047	}
1745		1048
1746	REQ_SEND;	1049	REQ_SEND;
1747	}	1050	}
…		…
1753	dREQ;	1056	dREQ;
1754		1057
1755	req->sv1 = newSVsv (fh_or_path);	1058	req->sv1 = newSVsv (fh_or_path);
1756	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1059	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1757		1060
1758	if (SvPOK (fh_or_path))	1061	if (SvPOK (req->sv1))
1759	{	1062	{
1760	req->type = REQ_TRUNCATE;	1063	req->type = EIO_TRUNCATE;
1761	req->ptr1 = SvPVbyte_nolen (req->sv1);	1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
1762	}	1065	}
1763	else	1066	else
1764	{	1067	{
1765	req->type = REQ_FTRUNCATE;	1068	req->type = EIO_FTRUNCATE;
1766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1767	}	1070	}
1768		1071
1769	REQ_SEND;	1072	REQ_SEND;
1770	}	1073	}
1771		1074
1772	void	1075	void
1773	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1076	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1077	ALIAS:
		1078	aio_chmod = EIO_CHMOD
		1079	aio_mkdir = EIO_MKDIR
1774	PPCODE:	1080	PPCODE:
1775	{	1081	{
1776	dREQ;	1082	dREQ;
1777		1083
1778	req->mode = mode;	1084	req->int2 = mode;
1779	req->sv1 = newSVsv (fh_or_path);	1085	req->sv1 = newSVsv (fh_or_path);
1780		1086
1781	if (SvPOK (fh_or_path))	1087	if (SvPOK (req->sv1))
1782	{	1088	{
1783	req->type = REQ_CHMOD;	1089	req->type = ix;
1784	req->ptr1 = SvPVbyte_nolen (req->sv1);	1090	req->ptr1 = SvPVbyte_nolen (req->sv1);
1785	}	1091	}
1786	else	1092	else
1787	{	1093	{
1788	req->type = REQ_FCHMOD;	1094	req->type = EIO_FCHMOD;
1789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1095	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1790	}	1096	}
1791		1097
1792	REQ_SEND;	1098	REQ_SEND;
1793	}	1099	}
…		…
1800		1106
1801	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1107	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1802	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1108	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1803	req->sv1 = newSVsv (fh_or_path);	1109	req->sv1 = newSVsv (fh_or_path);
1804		1110
1805	if (SvPOK (fh_or_path))	1111	if (SvPOK (req->sv1))
1806	{	1112	{
1807	req->type = REQ_CHOWN;	1113	req->type = EIO_CHOWN;
1808	req->ptr1 = SvPVbyte_nolen (req->sv1);	1114	req->ptr1 = SvPVbyte_nolen (req->sv1);
1809	}	1115	}
1810	else	1116	else
1811	{	1117	{
1812	req->type = REQ_FCHOWN;	1118	req->type = EIO_FCHOWN;
1813	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1119	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1814	}	1120	}
1815		1121
1816	REQ_SEND;	1122	REQ_SEND;
1817	}	1123	}
1818		1124
1819	void	1125	void
		1126	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1127	PPCODE:
		1128	{
		1129	dREQ;
		1130
		1131	req->type = EIO_READDIR;
		1132	req->sv1 = newSVsv (pathname);
		1133	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1134	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1135
		1136	if (flags & EIO_READDIR_DENTS)
		1137	req->int1 |= EIO_READDIR_CUSTOM2;
		1138
		1139	REQ_SEND;
		1140	}
		1141
		1142	void
1820	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1143	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1821	ALIAS:	1144	ALIAS:
1822	aio_unlink = REQ_UNLINK	1145	aio_unlink = EIO_UNLINK
1823	aio_rmdir = REQ_RMDIR	1146	aio_rmdir = EIO_RMDIR
1824	aio_readdir = REQ_READDIR	1147	aio_readdir = EIO_READDIR
1825	PPCODE:	1148	PPCODE:
1826	{	1149	{
1827	dREQ;	1150	dREQ;
1828		1151
1829	req->type = ix;	1152	req->type = ix;
…		…
1832		1155
1833	REQ_SEND;	1156	REQ_SEND;
1834	}	1157	}
1835		1158
1836	void	1159	void
1837	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1838	PPCODE:
1839	{
1840	dREQ;
1841
1842	req->type = REQ_MKDIR;
1843	req->sv1 = newSVsv (pathname);
1844	req->ptr1 = SvPVbyte_nolen (req->sv1);
1845	req->mode = mode;
1846
1847	REQ_SEND;
1848	}
1849
1850	void
1851	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1160	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1852	ALIAS:	1161	ALIAS:
1853	aio_link = REQ_LINK	1162	aio_link = EIO_LINK
1854	aio_symlink = REQ_SYMLINK	1163	aio_symlink = EIO_SYMLINK
1855	aio_rename = REQ_RENAME	1164	aio_rename = EIO_RENAME
1856	PPCODE:	1165	PPCODE:
1857	{	1166	{
1858	dREQ;	1167	dREQ;
1859		1168
1860	req->type = ix;	1169	req->type = ix;
1861	req->sv2 = newSVsv (oldpath);	1170	req->sv1 = newSVsv (oldpath);
		1171	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1172	req->sv2 = newSVsv (newpath);
1862	req->ptr2 = SvPVbyte_nolen (req->sv2);	1173	req->ptr2 = SvPVbyte_nolen (req->sv2);
1863	req->sv1 = newSVsv (newpath);
1864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1865		1174
1866	REQ_SEND;	1175	REQ_SEND;
1867	}	1176	}
1868		1177
1869	void	1178	void
1870	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1179	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1871	PPCODE:	1180	PPCODE:
1872	{	1181	{
1873	dREQ;	1182	dREQ;
1874		1183
1875	req->type = REQ_MKNOD;	1184	req->type = EIO_MKNOD;
1876	req->sv1 = newSVsv (pathname);	1185	req->sv1 = newSVsv (pathname);
1877	req->ptr1 = SvPVbyte_nolen (req->sv1);	1186	req->ptr1 = SvPVbyte_nolen (req->sv1);
1878	req->mode = (mode_t)mode;	1187	req->int2 = (mode_t)mode;
1879	req->offs = dev;	1188	req->offs = dev;
1880		1189
1881	REQ_SEND;	1190	REQ_SEND;
1882	}	1191	}
1883		1192
1884	void	1193	void
		1194	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1195	ALIAS:
		1196	aio_mtouch = EIO_MTOUCH
		1197	aio_msync = EIO_MSYNC
		1198	PROTOTYPE: $$$$;$
		1199	PPCODE:
		1200	{
		1201	STRLEN svlen;
		1202	UV len = SvUV (length);
		1203	char *svptr = SvPVbyte (data, svlen);
		1204
		1205	if (offset < 0)
		1206	offset += svlen;
		1207
		1208	if (offset < 0 || offset > svlen)
		1209	croak ("offset outside of scalar");
		1210
		1211	if (!SvOK (length) || len + offset > svlen)
		1212	len = svlen - offset;
		1213
		1214	{
		1215	dREQ;
		1216
		1217	req->type = ix;
		1218	req->size = len;
		1219	req->sv2 = SvREFCNT_inc (data);
		1220	req->ptr2 = (char *)svptr + offset;
		1221	req->int1 = flags;
		1222
		1223	REQ_SEND;
		1224	}
		1225	}
		1226
		1227	void
1885	aio_busy (double delay, SV *callback=&PL_sv_undef)	1228	aio_busy (double delay, SV *callback=&PL_sv_undef)
1886	PPCODE:	1229	PPCODE:
1887	{	1230	{
1888	dREQ;	1231	dREQ;
1889		1232
1890	req->type = REQ_BUSY;	1233	req->type = EIO_BUSY;
1891	req->nv1 = delay < 0. ? 0. : delay;	1234	req->nv1 = delay < 0. ? 0. : delay;
1892		1235
1893	REQ_SEND;	1236	REQ_SEND;
1894	}	1237	}
1895		1238
…		…
1898	PROTOTYPE: ;$	1241	PROTOTYPE: ;$
1899	PPCODE:	1242	PPCODE:
1900	{	1243	{
1901	dREQ;	1244	dREQ;
1902		1245
1903	req->type = REQ_GROUP;	1246	req->type = EIO_GROUP;
1904		1247
1905	req_send (req);	1248	req_submit (req);
1906	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1249	XPUSHs (req_sv (req, aio_grp_stash));
1907	}	1250	}
1908		1251
1909	void	1252	void
1910	aio_nop (SV *callback=&PL_sv_undef)	1253	aio_nop (SV *callback=&PL_sv_undef)
1911	ALIAS:	1254	ALIAS:
1912	aio_nop = REQ_NOP	1255	aio_nop = EIO_NOP
1913	aio_sync = REQ_SYNC	1256	aio_sync = EIO_SYNC
1914	PPCODE:	1257	PPCODE:
1915	{	1258	{
1916	dREQ;	1259	dREQ;
1917		1260
1918	req->type = ix;	1261	req->type = ix;
…		…
1922		1265
1923	int	1266	int
1924	aioreq_pri (int pri = 0)	1267	aioreq_pri (int pri = 0)
1925	PROTOTYPE: ;$	1268	PROTOTYPE: ;$
1926	CODE:	1269	CODE:
1927	RETVAL = next_pri - PRI_BIAS;	1270	RETVAL = next_pri;
1928	if (items > 0)	1271	if (items > 0)
1929	{	1272	{
1930	if (pri < PRI_MIN) pri = PRI_MIN;	1273	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1931	if (pri > PRI_MAX) pri = PRI_MAX;	1274	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1932	next_pri = pri + PRI_BIAS;	1275	next_pri = pri;
1933	}	1276	}
1934	OUTPUT:	1277	OUTPUT:
1935	RETVAL	1278	RETVAL
1936		1279
1937	void	1280	void
1938	aioreq_nice (int nice = 0)	1281	aioreq_nice (int nice = 0)
1939	CODE:	1282	CODE:
1940	nice = next_pri - nice;	1283	nice = next_pri - nice;
1941	if (nice < PRI_MIN) nice = PRI_MIN;	1284	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1942	if (nice > PRI_MAX) nice = PRI_MAX;	1285	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1943	next_pri = nice + PRI_BIAS;	1286	next_pri = nice;
1944		1287
1945	void	1288	void
1946	flush ()	1289	flush ()
1947	PROTOTYPE:	1290	PROTOTYPE:
1948	CODE:	1291	CODE:
1949	while (nreqs)	1292	while (eio_nreqs ())
1950	{	1293	{
1951	poll_wait ();	1294	poll_wait ();
1952	poll_cb ();	1295	poll_cb ();
1953	}	1296	}
1954		1297
…		…
1963		1306
1964	int	1307	int
1965	poll_fileno()	1308	poll_fileno()
1966	PROTOTYPE:	1309	PROTOTYPE:
1967	CODE:	1310	CODE:
1968	RETVAL = respipe [0];	1311	RETVAL = s_epipe_fd (&respipe);
1969	OUTPUT:	1312	OUTPUT:
1970	RETVAL	1313	RETVAL
1971		1314
1972	int	1315	int
1973	poll_cb(...)	1316	poll_cb(...)
…		…
1981	poll_wait()	1324	poll_wait()
1982	PROTOTYPE:	1325	PROTOTYPE:
1983	CODE:	1326	CODE:
1984	poll_wait ();	1327	poll_wait ();
1985		1328
1986	void
1987	setsig (int signum = SIGIO)
1988	PROTOTYPE: ;$
1989	CODE:
1990	{
1991	if (block_sig_level)
1992	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1993
1994	X_LOCK (reslock);
1995	main_tid = pthread_self ();
1996	main_sig = signum;
1997	X_UNLOCK (reslock);
1998
1999	if (main_sig && npending)
2000	pthread_kill (main_tid, main_sig);
2001	}
2002
2003	void
2004	aio_block (SV *cb)
2005	PROTOTYPE: &
2006	PPCODE:
2007	{
2008	int count;
2009
2010	block_sig ();
2011	PUSHMARK (SP);
2012	PUTBACK;
2013	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
2014	unblock_sig ();
2015
2016	if (SvTRUE (ERRSV))
2017	croak (0);
2018
2019	XSRETURN (count);
2020	}
2021
2022	int	1329	int
2023	nreqs()	1330	nreqs()
2024	PROTOTYPE:	1331	PROTOTYPE:
2025	CODE:	1332	CODE:
2026	RETVAL = nreqs;	1333	RETVAL = eio_nreqs ();
2027	OUTPUT:	1334	OUTPUT:
2028	RETVAL	1335	RETVAL
2029		1336
2030	int	1337	int
2031	nready()	1338	nready()
2032	PROTOTYPE:	1339	PROTOTYPE:
2033	CODE:	1340	CODE:
2034	RETVAL = get_nready ();	1341	RETVAL = eio_nready ();
2035	OUTPUT:	1342	OUTPUT:
2036	RETVAL	1343	RETVAL
2037		1344
2038	int	1345	int
2039	npending()	1346	npending()
2040	PROTOTYPE:	1347	PROTOTYPE:
2041	CODE:	1348	CODE:
2042	RETVAL = get_npending ();	1349	RETVAL = eio_npending ();
2043	OUTPUT:	1350	OUTPUT:
2044	RETVAL	1351	RETVAL
2045		1352
2046	int	1353	int
2047	nthreads()	1354	nthreads()
2048	PROTOTYPE:	1355	PROTOTYPE:
2049	CODE:	1356	CODE:
2050	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1357	RETVAL = eio_nthreads ();
2051	RETVAL = started;
2052	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2053	OUTPUT:	1358	OUTPUT:
2054	RETVAL	1359	RETVAL
2055		1360
		1361	int
		1362	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1363	PROTOTYPE: $$$$
		1364	CODE:
		1365	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1366	RETVAL = posix_fadvise (fh, offset, length, advice);
		1367	#else
		1368	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1369	#endif
		1370	OUTPUT:
		1371	RETVAL
		1372
		1373	ssize_t
		1374	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1375	PROTOTYPE: $$$$
		1376	CODE:
		1377	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1378	OUTPUT:
		1379	RETVAL
		1380
		1381	void
		1382	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1383	PROTOTYPE: $$$$$;$
		1384	PPCODE:
		1385	sv_unmagic (scalar, MMAP_MAGIC);
		1386	{
		1387	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1388	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1389	if (addr == (void *)-1)
		1390	XSRETURN_NO;
		1391
		1392	/* we store the length in mg_obj, as namlen is I32 :/ */
		1393	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1394	->mg_obj = (SV *)length;
		1395
		1396	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1397	if (!(prot & PROT_WRITE))
		1398	SvREADONLY_on (scalar);
		1399
		1400	SvPVX (scalar) = (char *)addr;
		1401	SvCUR_set (scalar, length);
		1402	SvLEN_set (scalar, 0);
		1403	SvPOK_only (scalar);
		1404
		1405	XSRETURN_YES;
		1406	}
		1407
		1408	void
		1409	munmap (SV *scalar)
		1410	PROTOTYPE: $
		1411	CODE:
		1412	sv_unmagic (scalar, MMAP_MAGIC);
		1413
		1414	int
		1415	mlockall (int flags)
		1416	PROTOTYPE: $
		1417	CODE:
		1418	#if _POSIX_MEMLOCK
		1419	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1420	extern int mallopt (int, int);
		1421	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1422	#endif
		1423	mlockall (flags);
		1424	#else
		1425	RETVAL = -1;
		1426	errno = ENOSYS;
		1427	#endif
		1428	OUTPUT:
		1429	RETVAL
		1430
		1431	int
		1432	munlockall ()
		1433	PROTOTYPE:
		1434	CODE:
		1435	#if _POSIX_MEMLOCK
		1436	munlockall ();
		1437	#else
		1438	RETVAL = -1;
		1439	errno = ENOSYS;
		1440	#endif
		1441	OUTPUT:
		1442	RETVAL
		1443
		1444	void _on_next_submit (SV *cb)
		1445	CODE:
		1446	SvREFCNT_dec (on_next_submit);
		1447	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1448
2056	PROTOTYPES: DISABLE	1449	PROTOTYPES: DISABLE
2057		1450
2058	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2059		1452
2060	void	1453	void
2061	cancel (aio_req_ornot req)	1454	cancel (aio_req_ornot req)
2062	CODE:	1455	CODE:
2063	req_cancel (req);	1456	eio_cancel (req);
2064		1457
2065	void	1458	void
2066	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1459	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2067	CODE:	1460	PPCODE:
		1461	{
		1462	if (GIMME_V != G_VOID)
		1463	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1464
		1465	if (items > 1)
		1466	{
		1467	SV *cb_cv =get_cb (callback);
		1468
2068	SvREFCNT_dec (req->callback);	1469	SvREFCNT_dec (req->callback);
2069	req->callback = newSVsv (callback);	1470	req->callback = SvREFCNT_inc (cb_cv);
		1471	}
		1472	}
2070		1473
2071	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1474	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2072		1475
2073	void	1476	void
2074	add (aio_req grp, ...)	1477	add (aio_req grp, ...)
2075	PPCODE:	1478	PPCODE:
2076	{	1479	{
2077	int i;	1480	int i;
2078	aio_req req;
2079
2080	if (main_sig && !block_sig_level)
2081	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2082		1481
2083	if (grp->int1 == 2)	1482	if (grp->int1 == 2)
2084	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2085		1484
2086	for (i = 1; i < items; ++i )	1485	for (i = 1; i < items; ++i )
2087	{	1486	{
		1487	aio_req req;
		1488
2088	if (GIMME_V != G_VOID)	1489	if (GIMME_V != G_VOID)
2089	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1490	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2090		1491
2091	req = SvAIO_REQ (ST (i));	1492	req = SvAIO_REQ (ST (i));
2092		1493
2093	if (req)	1494	if (req)
2094	{	1495	eio_grp_add (grp, req);
2095	++grp->size;
2096	req->grp = grp;
2097
2098	req->grp_prev = 0;
2099	req->grp_next = grp->grp_first;
2100
2101	if (grp->grp_first)
2102	grp->grp_first->grp_prev = req;
2103
2104	grp->grp_first = req;
2105	}
2106	}	1496	}
2107	}	1497	}
2108		1498
2109	void	1499	void
2110	cancel_subs (aio_req_ornot req)	1500	cancel_subs (aio_req_ornot req)
…		…
2119	AV *av;	1509	AV *av;
2120		1510
2121	grp->errorno = errno;	1511	grp->errorno = errno;
2122		1512
2123	av = newAV ();	1513	av = newAV ();
		1514	av_extend (av, items - 1);
2124		1515
2125	for (i = 1; i < items; ++i )	1516	for (i = 1; i < items; ++i )
2126	av_push (av, newSVsv (ST (i)));	1517	av_push (av, newSVsv (ST (i)));
2127		1518
2128	SvREFCNT_dec (grp->sv1);	1519	SvREFCNT_dec (grp->sv1);
…		…
2135	grp->errorno = errorno;	1526	grp->errorno = errorno;
2136		1527
2137	void	1528	void
2138	limit (aio_req grp, int limit)	1529	limit (aio_req grp, int limit)
2139	CODE:	1530	CODE:
2140	grp->int2 = limit;	1531	eio_grp_limit (grp, limit);
2141	aio_grp_feed (grp);
2142		1532
2143	void	1533	void
2144	feed (aio_req grp, SV *callback=&PL_sv_undef)	1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
2145	CODE:	1535	CODE:
2146	{	1536	{
2147	SvREFCNT_dec (grp->sv2);	1537	SvREFCNT_dec (grp->sv2);
2148	grp->sv2 = newSVsv (callback);	1538	grp->sv2 = newSVsv (callback);
		1539	grp->feed = aio_grp_feed;
2149		1540
2150	if (grp->int2 <= 0)	1541	if (grp->int2 <= 0)
2151	grp->int2 = 2;	1542	grp->int2 = 2;
2152		1543
2153	aio_grp_feed (grp);	1544	eio_grp_limit (grp, grp->int2);
2154	}	1545	}
2155		1546

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