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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.109 by root, Sat Oct 6 14:05:19 2007 UTC vs.
Revision 1.179 by root, Fri Jan 7 21:47:15 2011 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_MEMLOCK_RANGE || _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/config.h"
		124	#include "libeio/eio.h"
		125
		126	#ifndef POSIX_FADV_NORMAL
		127	# define POSIX_FADV_NORMAL 0
		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 !HAVE_POSIX_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	#endif
		152	#ifndef POSIX_MADV_SEQUENTIAL
		153	# define POSIX_MADV_SEQUENTIAL 0
		154	#endif
		155	#ifndef POSIX_MADV_RANDOM
		156	# define POSIX_MADV_RANDOM 0
		157	#endif
		158	#ifndef POSIX_MADV_WILLNEED
		159	# define POSIX_MADV_WILLNEED 0
		160	#endif
		161	#ifndef POSIX_MADV_DONTNEED
		162	# define POSIX_MADV_DONTNEED 0
		163	#endif
		164
		165	#if !HAVE_POSIX_MADVISE
		166	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		167	#endif
		168
		169	#ifndef PROT_NONE
		170	# define PROT_NONE 0
		171	#endif
		172	#ifndef PROT_READ
		173	# define PROT_READ 0
		174	#endif
		175	#ifndef PROT_WRITE
		176	# define PROT_READ 0
		177	#endif
		178	#ifndef PROT_EXEC
		179	# define PROT_EXEC 0
		180	#endif
		181
		182	#ifndef ST_NODEV
		183	# define ST_NODEV 0
		184	#endif
		185	#ifndef ST_NOEXEC
		186	# define ST_NOEXEC 0
		187	#endif
		188	#ifndef ST_SYNCHRONOUS
		189	# define ST_SYNCHRONOUS 0
		190	#endif
		191	#ifndef ST_MANDLOCK
		192	# define ST_MANDLOCK 0
		193	#endif
		194	#ifndef ST_WRITE
		195	# define ST_WRITE 0
		196	#endif
		197	#ifndef ST_APPEND
		198	# define ST_APPEND 0
		199	#endif
		200	#ifndef ST_IMMUTABLE
		201	# define ST_IMMUTABLE 0
		202	#endif
		203	#ifndef ST_NOATIME
		204	# define ST_NOATIME 0
		205	#endif
		206	#ifndef ST_NODIRATIME
		207	# define ST_NODIRATIME 0
		208	#endif
		209	#ifndef ST_RELATIME
		210	# define ST_RELATIME 0
		211	#endif
		212
		213	#ifndef MAP_ANONYMOUS
		214	# ifdef MAP_ANON
		215	# define MAP_ANONYMOUS MAP_ANON
		216	# else
		217	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		218	# endif
		219	#endif
		220	#ifndef MAP_HUGETLB
		221	# define MAP_HUGETLB 0
		222	#endif
		223	#ifndef MAP_LOCKED
		224	# define MAP_LOCKED 0
		225	#endif
		226	#ifndef MAP_NORESERVE
		227	# define MAP_NORESERVE 0
		228	#endif
		229	#ifndef MAP_POPULATE
		230	# define MAP_POPULATE 0
		231	#endif
		232	#ifndef MAP_NONBLOCK
		233	# define MAP_NONBLOCK 0
		234	#endif
		235
		236	#ifndef PAGESIZE
		237	# define PAGESIZE sysconf (_SC_PAGESIZE)
		238	#endif
		239
		240	static int req_invoke (eio_req *req);
		241	#define EIO_FINISH(req) req_invoke (req)
		242	static void req_destroy (eio_req *grp);
		243	#define EIO_DESTROY(req) req_destroy (req)
113		244
114	enum {	245	enum {
115	REQ_QUIT,	246	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_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	};	247	};
131		248
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		250
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;	251	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
168		253
169	enum {	254	static SV *on_next_submit;
170	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	256	static int max_outstanding;
172		257
173	DEFAULT_PRI = 0,	258	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		259
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 ()
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 ()
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 ()
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 ()
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 ()
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 ();
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	260	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	261	static void req_cancel (aio_req req);
378		262
		263	static void want_poll (void)
		264	{
		265	/* write a dummy byte to the pipe so fh becomes ready */
		266	s_epipe_signal (&respipe);
		267	}
		268
		269	static void done_poll (void)
		270	{
		271	/* read any signals sent by the worker threads */
		272	s_epipe_drain (&respipe);
		273	}
		274
379	/* must be called at most once */	275	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
381	{	277	{
382	if (!req->self)	278	if (!req->self)
383	{	279	{
384	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	282	}
387		283
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	285	}
390		286
391	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
392	{	288	{
393	MAGIC *mg;	289	MAGIC *mg;
394		290
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	291	if (!SvROK (sv)
		292	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		293	&& SvSTASH (SvRV (sv)) != aio_req_stash
		294	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
397		296
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		298
400	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	300	}
402		301
403	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
404	{	303	{
405	block_sig ();	304	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	305	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	306	dSP;
414		307
415	ENTER;	308	ENTER;
416	SAVETMPS;	309	SAVETMPS;
417	PUSHMARK (SP);	310	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	311	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	312	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	314	SPAGAIN;
422	FREETMPS;	315	FREETMPS;
423	LEAVE;	316	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	}	317	}
434
435	unblock_sig ();
436	}	318	}
437		319
438	static void aio_grp_dec (aio_req grp)	320	static void req_submit (eio_req *req)
439	{	321	{
440	--grp->size;	322	eio_submit (req);
441		323
442	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	325	{
448	block_sig ();	326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
449		328
450	if (!req_invoke (grp))	329	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		330
457	req_destroy (grp);	331	PUSHMARK (SP);
458	unblock_sig ();	332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
459	}	334	}
460	}	335	}
461		336
462	static int req_invoke (aio_req req)	337	static int req_invoke (eio_req *req)
463	{	338	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	339	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	340	SvREADONLY_off (req->sv2);
468		341
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	342	if (!EIO_CANCELLED (req) && req->callback)
470	{	343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
471	ENTER;	348	ENTER;
472	SAVETMPS;	349	SAVETMPS;
473	PUSHMARK (SP);	350	PUSHMARK (SP);
474	EXTEND (SP, 1);	351	EXTEND (SP, 1);
475		352
		353	/* do not recreate the result IV from scratch each time */
		354	if (expect_true (sv_result_cache))
		355	{
		356	sv_result = sv_result_cache; sv_result_cache = 0;
		357	SvIV_set (sv_result, req->result);
		358	SvIOK_only (sv_result);
		359	}
		360	else
		361	{
		362	sv_result = newSViv (req->result);
		363	SvREADONLY_on (sv_result);
		364	}
		365
476	switch (req->type)	366	switch (req->type)
477	{	367	{
478	case REQ_READDIR:	368	case EIO_READDIR:
479	{	369	{
480	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
481		371
482	if (req->result >= 0)	372	if (req->result >= 0)
483	{	373	{
484	int i;	374	int i;
485	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	377	AV *av = newAV ();
487		378
488	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
489		380
490	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
491	{	382	{
492	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		386
		387	if (req->int1 & EIO_READDIR_CUSTOM2)
		388	{
		389	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		390	AV *avent = newAV ();
		391
		392	av_extend (avent, 2);
		393
		394	if (!sv_type [ent->type])
		395	{
		396	sv_type [ent->type] = newSViv (ent->type);
		397	SvREADONLY_on (sv_type [ent->type]);
		398	}
		399
		400	av_store (avent, 0, namesv);
		401	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		402	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		403
		404	av_store (av, i, newRV_noinc ((SV *)avent));
		405	}
		406	else
494	av_store (av, i, sv);	407	av_store (av, i, namesv);
		408
		409	++ent;
		410	}
		411	else
		412	{
		413	SV *name = newSVpv (names, 0);
		414	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
496	}	417	}
497		418
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	420	}
500		421
501	PUSHs (rv);	422	PUSHs (rv);
		423
		424	if (req->int1 & EIO_READDIR_CUSTOM1)
		425	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	426	}
503	break;	427	break;
504		428
505	case REQ_OPEN:	429	case EIO_OPEN:
506	{	430	{
507	/* convert fd to fh */	431	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	432	SV *fh = &PL_sv_undef;
509		433
510	if (req->result >= 0)	434	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	436	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	437	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	438	char sym [64];
515	int symlen;	439	int symlen;
516		440
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	441	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	442	gv_init (gv, aio_stash, sym, symlen, 0);
519		443
520	symlen = snprintf (	444	symlen = snprintf (
521	sym,	445	sym,
522	sizeof (sym),	446	sizeof (sym),
523	"%s&=%d",	447	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	449	(int)req->result
526	);	450	);
527		451
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	453	fh = (SV *)gv;
530	}	454	}
531		455
532	PUSHs (fh);	456	PUSHs (fh);
533	}	457	}
534	break;	458	break;
535		459
		460	case EIO_STATVFS:
		461	case EIO_FSTATVFS:
		462	{
		463	SV *rv = &PL_sv_undef;
		464
		465	if (req->result >= 0)
		466	{
		467	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		468	HV *hv = newHV ();
		469
		470	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		471
		472	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		473	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		474	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		475	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		476	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		477	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		478	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		479	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		480	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		481	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		482	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		483	}
		484
		485	PUSHs (rv);
		486	}
		487
		488	break;
		489
536	case REQ_GROUP:	490	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
538		492
539	if (req->sv1)	493	if (req->sv1)
540	{	494	{
541	int i;	495	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
547	}	501	}
548	break;	502	break;
549		503
550	case REQ_NOP:	504	case EIO_NOP:
551	case REQ_BUSY:	505	case EIO_BUSY:
552	break;	506	break;
553		507
554	case REQ_READLINK:	508	case EIO_READLINK:
555	if (req->result > 0)	509	if (req->result > 0)
556	{	510	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;	511	break;
562		512
563	case REQ_STAT:	513	case EIO_STAT:
564	case REQ_LSTAT:	514	case EIO_LSTAT:
565	case REQ_FSTAT:	515	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	517	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
570	break;	520	break;
571		521
572	case REQ_READ:	522	case EIO_READ:
		523	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	524	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	525	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
576	break;	530	break;
577		531
		532	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		533	if (req->result > 0)
		534	SvIV_set (sv_result, 0);
		535	/* FALLTHROUGH */
		536
578	default:	537	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
580	break;	539	break;
581	}	540	}
582		541
583	errno = req->errorno;	542	errno = req->errorno;
584		543
585	PUTBACK;	544	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	546	SPAGAIN;
588		547
		548	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		549	SvREFCNT_dec (sv_result);
		550	else
		551	sv_result_cache = sv_result;
		552
589	FREETMPS;	553	FREETMPS;
590	LEAVE;	554	LEAVE;
591		555
592	PUTBACK;	556	PUTBACK;
593	}	557	}
594		558
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);	559	return !!SvTRUE (ERRSV);
610	}	560	}
611		561
612	static void req_destroy (aio_req req)	562	static void req_destroy (aio_req req)
613	{	563	{
614	if (req->self)	564	if (req->self)
…		…
619		569
620	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
623		573
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	574	Safefree (req);
628	}	575	}
629		576
630	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
631	{	578	{
632	aio_req sub;	579	aio_req sub;
633		580
634	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
635	return;	582	return;
636		583
637	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	585	grp->sv2 = 0;
639		586
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	588	}
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		589
657	static void	590	static void
658	create_respipe ()	591	create_respipe (void)
659	{	592	{
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))	593	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	594	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	}	595	}
694		596
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 ()
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	}
789
790	static void poll_wait ()	597	static void poll_wait (void)
791	{	598	{
792	fd_set rfd;
793
794	while (nreqs)	599	while (eio_nreqs ())
795	{	600	{
796	int size;	601	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	602
		603	X_LOCK (reslock);
798	size = res_queue.size;	604	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	605	X_UNLOCK (reslock);
800		606
801	if (size)	607	if (size)
802	return;	608	return;
803		609
804	maybe_start_thread ();	610	etp_maybe_start_thread ();
805		611
806	FD_ZERO (&rfd);	612	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	613	}
811	}	614	}
812		615
813	static int poll_cb ()	616	static int poll_cb (void)
814	{	617	{
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 (;;)	618	for (;;)
828	{	619	{
829	for (;;)	620	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		621
833	X_LOCK (reslock);	622	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);	623	croak (0);
868	}
869		624
870	count++;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	626	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		627
890	poll_wait ();	628	poll_wait ();
891
892	++maxreqs;
893	}	629	}
		630	}
894		631
895	unblock_sig ();	632	static void atfork_child (void)
896	return count;	633	{
		634	create_respipe ();
897	}	635	}
898		636
899	/*****************************************************************************/	637	/*****************************************************************************/
900	/* work around various missing functions */
901		638
902	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	641	# 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	642	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		643
1080	if (res < 0	644	#if !_POSIX_MEMORY_PROTECTION
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	645	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1082	#if __solaris	646	# define PROT_NONE 0
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	647	# define PROT_WRITE 0
		648	# define MAP_PRIVATE 0
		649	# define MAP_SHARED 0
		650	# define MAP_FIXED 0
1084	#endif	651	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090		652
1091	res = 0;	653	#define MMAP_MAGIC PERL_MAGIC_ext
1092		654
1093	while (count)	655	static int
1094	{	656	mmap_free (pTHX_ SV *sv, MAGIC *mg)
1095	ssize_t cnt;	657	{
1096		658	int old_errno = errno;
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	659	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		660	errno = old_errno;
1098		661
1099	if (cnt <= 0)	662	mg->mg_obj = 0; /* just in case */
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104		663
1105	cnt = write (ofd, aio_buf, cnt);	664	SvREADONLY_off (sv);
1106		665
1107	if (cnt <= 0)	666	if (SvPVX (sv) != mg->mg_ptr)
1108	{	667	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112		668
1113	offset += cnt;	669	SvCUR_set (sv, 0);
1114	res += cnt;	670	SvPVX (sv) = 0;
1115	count -= cnt;	671	SvOK_off (sv);
1116	}
1117	}
1118		672
1119	return res;	673	return 0;
1120	}	674	}
1121		675
1122	/* read a full directory */	676	static MGVTBL mmap_vtbl = {
1123	static void scandir_ (aio_req req, worker *self)	677	0, 0, 0, 0, mmap_free
1124	{	678	};
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		679
1183	/*****************************************************************************/	680	/*****************************************************************************/
1184		681
1185	X_THREAD_PROC (aio_proc)	682	static SV *
		683	get_cb (SV *cb_sv)
1186	{	684	{
1187	{//D	685	SvGETMAGIC (cb_sv);
1188	aio_req req;	686	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1189	struct timespec ts;
1190	worker *self = (worker *)thr_arg;
1191
1192	/* try to distribute timeouts somewhat randomly */
1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195	for (;;)
1196	{
1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199	X_LOCK (reqlock);
1200
1201	for (;;)
1202	{
1203	self->req = req = reqq_shift (&req_queue);
1204
1205	if (req)
1206	break;
1207
1208	++idle;
1209
1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211	== ETIMEDOUT)
1212	{
1213	if (idle > max_idle)
1214	{
1215	--idle;
1216	X_UNLOCK (reqlock);
1217	X_LOCK (wrklock);
1218	--started;
1219	X_UNLOCK (wrklock);
1220	goto quit;
1221	}
1222
1223	/* we are allowed to idle, so do so without any timeout */
1224	X_COND_WAIT (reqwait, reqlock);
1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226	}
1227
1228	--idle;
1229	}
1230
1231	--nready;
1232
1233	X_UNLOCK (reqlock);
1234
1235	errno = 0; /* strictly unnecessary */
1236
1237	if (!(req->flags & FLAG_CANCELLED))
1238	switch (req->type)
1239	{
1240	case REQ_READ: req->result = req->offs >= 0
1241	? pread (req->int1, req->ptr1, req->size, req->offs)
1242	: read (req->int1, req->ptr1, req->size); break;
1243	case REQ_WRITE: req->result = req->offs >= 0
1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245	: write (req->int1, req->ptr1, req->size); break;
1246
1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262	case REQ_CLOSE: req->result = close (req->int1); break;
1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
1274	case REQ_READDIR: scandir_ (req, self); break;
1275
1276	case REQ_BUSY:
1277	#ifdef _WIN32
1278	Sleep (req->nv1 * 1000.);
1279	#else
1280	{
1281	struct timeval tv;
1282
1283	tv.tv_sec = req->nv1;
1284	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1285
1286	req->result = select (0, 0, 0, 0, &tv);
1287	}
1288	#endif
1289	break;
1290
1291	case REQ_UTIME:
1292	case REQ_FUTIME:
1293	{
1294	struct timeval tv[2];
1295	struct timeval *times;
1296
1297	if (req->nv1 != -1. || req->nv2 != -1.)
1298	{
1299	tv[0].tv_sec = req->nv1;
1300	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1301	tv[1].tv_sec = req->nv2;
1302	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1303
1304	times = tv;
1305	}
1306	else
1307	times = 0;
1308
1309
1310	req->result = req->type == REQ_FUTIME
1311	? futimes (req->int1, times)
1312	: utimes (req->ptr1, times);
1313	}
1314
1315	case REQ_GROUP:
1316	case REQ_NOP:
1317	break;
1318
1319	case REQ_QUIT:
1320	goto quit;
1321
1322	default:
1323	req->result = -1;
1324	break;
1325	}
1326
1327	req->errorno = errno;
1328
1329	X_LOCK (reslock);
1330
1331	++npending;
1332
1333	if (!reqq_push (&res_queue, req))
1334	{
1335	/* write a dummy byte to the pipe so fh becomes ready */
1336	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1337
1338	/* optionally signal the main thread asynchronously */
1339	if (main_sig)
1340	pthread_kill (main_tid, main_sig);
1341	}
1342
1343	self->req = 0;
1344	worker_clear (self);
1345
1346	X_UNLOCK (reslock);
1347	}
1348
1349	quit:
1350	X_LOCK (wrklock);
1351	worker_free (self);
1352	X_UNLOCK (wrklock);
1353
1354	return 0;
1355	}//D
1356	}
1357
1358	/*****************************************************************************/
1359
1360	static void atfork_prepare (void)
1361	{
1362	X_LOCK (wrklock);
1363	X_LOCK (reqlock);
1364	X_LOCK (reslock);
1365	#if !HAVE_PREADWRITE
1366	X_LOCK (preadwritelock);
1367	#endif
1368	#if !HAVE_READDIR_R
1369	X_LOCK (readdirlock);
1370	#endif
1371	}
1372
1373	static void atfork_parent (void)
1374	{
1375	#if !HAVE_READDIR_R
1376	X_UNLOCK (readdirlock);
1377	#endif
1378	#if !HAVE_PREADWRITE
1379	X_UNLOCK (preadwritelock);
1380	#endif
1381	X_UNLOCK (reslock);
1382	X_UNLOCK (reqlock);
1383	X_UNLOCK (wrklock);
1384	}
1385
1386	static void atfork_child (void)
1387	{
1388	aio_req prv;
1389
1390	while (prv = reqq_shift (&req_queue))
1391	req_destroy (prv);
1392
1393	while (prv = reqq_shift (&res_queue))
1394	req_destroy (prv);
1395
1396	while (wrk_first.next != &wrk_first)
1397	{
1398	worker *wrk = wrk_first.next;
1399
1400	if (wrk->req)
1401	req_destroy (wrk->req);
1402
1403	worker_clear (wrk);
1404	worker_free (wrk);
1405	}
1406
1407	started = 0;
1408	idle = 0;
1409	nreqs = 0;
1410	nready = 0;
1411	npending = 0;
1412
1413	create_respipe ();
1414
1415	atfork_parent ();
1416	}	687	}
1417		688
1418	#define dREQ \	689	#define dREQ \
		690	SV *cb_cv; \
1419	aio_req req; \	691	aio_req req; \
1420	int req_pri = next_pri; \	692	int req_pri = next_pri; \
1421	next_pri = DEFAULT_PRI + PRI_BIAS; \	693	next_pri = EIO_PRI_DEFAULT; \
1422	\	694	\
1423	if (SvOK (callback) && !SvROK (callback)) \	695	cb_cv = get_cb (callback); \
1424	croak ("callback must be undef or of reference type"); \
1425	\	696	\
1426	Newz (0, req, 1, aio_cb); \	697	Newz (0, req, 1, eio_req); \
1427	if (!req) \	698	if (!req) \
1428	croak ("out of memory during aio_req allocation"); \	699	croak ("out of memory during eio_req allocation"); \
1429	\	700	\
1430	req->callback = newSVsv (callback); \	701	req->callback = SvREFCNT_inc (cb_cv); \
1431	req->pri = req_pri	702	req->pri = req_pri
1432		703
1433	#define REQ_SEND \	704	#define REQ_SEND \
		705	PUTBACK; \
1434	req_send (req); \	706	req_submit (req); \
		707	SPAGAIN; \
1435	\	708	\
1436	if (GIMME_V != G_VOID) \	709	if (GIMME_V != G_VOID) \
1437	XPUSHs (req_sv (req, AIO_REQ_KLASS));	710	XPUSHs (req_sv (req, aio_req_stash));
1438		711
1439	MODULE = IO::AIO PACKAGE = IO::AIO	712	MODULE = IO::AIO PACKAGE = IO::AIO
1440		713
1441	PROTOTYPES: ENABLE	714	PROTOTYPES: ENABLE
1442		715
1443	BOOT:	716	BOOT:
1444	{	717	{
1445	stash = gv_stashpv ("IO::AIO", 1);	718	static const struct {
1446		719	const char *name;
1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	720	IV iv;
1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	721	} *civ, const_iv[] = {
1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	722	# define const_niv(name, value) { # name, (IV) value },
1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	723	# define const_iv(name) { # name, (IV) name },
1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	724	# define const_eio(name) { # name, (IV) EIO_ ## name },
		725	const_iv (EXDEV)
		726	const_iv (ENOSYS)
		727	const_iv (O_RDONLY)
		728	const_iv (O_WRONLY)
		729	const_iv (O_RDWR)
		730	const_iv (O_CREAT)
		731	const_iv (O_TRUNC)
		732	const_iv (O_EXCL)
		733	const_iv (O_APPEND)
1452	#ifdef _WIN32	734	#ifndef _WIN32
1453	X_MUTEX_CHECK (wrklock);	735	const_iv (S_IFIFO)
1454	X_MUTEX_CHECK (reslock);
1455	X_MUTEX_CHECK (reqlock);
1456	X_MUTEX_CHECK (reqwait);
1457	X_MUTEX_CHECK (preadwritelock);
1458	X_MUTEX_CHECK (readdirlock);
1459
1460	X_COND_CHECK (reqwait);
1461	#else
1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464	#endif	736	#endif
		737	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		738	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		739	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		740	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		741	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		742	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1465		743
		744	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		745	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		746	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		747	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		748	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		749
		750	const_iv (ST_RDONLY)
		751	const_iv (ST_NOSUID)
		752	const_iv (ST_NODEV)
		753	const_iv (ST_NOEXEC)
		754	const_iv (ST_SYNCHRONOUS)
		755	const_iv (ST_MANDLOCK)
		756	const_iv (ST_WRITE)
		757	const_iv (ST_APPEND)
		758	const_iv (ST_IMMUTABLE)
		759	const_iv (ST_NOATIME)
		760	const_iv (ST_NODIRATIME)
		761	const_iv (ST_RELATIME)
		762
		763	const_iv (PROT_NONE)
		764	const_iv (PROT_EXEC)
		765	const_iv (PROT_READ)
		766	const_iv (PROT_WRITE)
		767
		768	/*const_iv (MAP_FIXED)*/
		769	const_iv (MAP_PRIVATE)
		770	const_iv (MAP_SHARED)
		771	const_iv (MAP_ANONYMOUS)
		772
		773	/* linuxish */
		774	const_iv (MAP_HUGETLB)
		775	const_iv (MAP_LOCKED)
		776	const_iv (MAP_NORESERVE)
		777	const_iv (MAP_POPULATE)
		778	const_iv (MAP_NONBLOCK)
		779
		780	const_eio (MCL_FUTURE)
		781	const_eio (MCL_CURRENT)
		782
		783	const_eio (MS_ASYNC)
		784	const_eio (MS_INVALIDATE)
		785	const_eio (MS_SYNC)
		786
		787	const_eio (MT_MODIFY)
		788
		789	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		790	const_eio (SYNC_FILE_RANGE_WRITE)
		791	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		792
		793	const_eio (READDIR_DENTS)
		794	const_eio (READDIR_DIRS_FIRST)
		795	const_eio (READDIR_STAT_ORDER)
		796	const_eio (READDIR_FOUND_UNKNOWN)
		797
		798	const_eio (DT_UNKNOWN)
		799	const_eio (DT_FIFO)
		800	const_eio (DT_CHR)
		801	const_eio (DT_DIR)
		802	const_eio (DT_BLK)
		803	const_eio (DT_REG)
		804	const_eio (DT_LNK)
		805	const_eio (DT_SOCK)
		806	const_eio (DT_WHT)
		807	};
		808
		809	aio_stash = gv_stashpv ("IO::AIO" , 1);
		810	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		811	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		812
		813	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		814	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		815
		816	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		817
1466	create_respipe ();	818	create_respipe ();
1467		819
1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	820	if (eio_init (want_poll, done_poll) < 0)
		821	croak ("IO::AIO: unable to initialise eio library");
		822
		823	/* atfork child called in fifo order, so before eio's handler */
		824	X_THREAD_ATFORK (0, 0, atfork_child);
1469	}	825	}
1470		826
1471	void	827	void
1472	max_poll_reqs (int nreqs)	828	max_poll_reqs (int nreqs)
1473	PROTOTYPE: $	829	PROTOTYPE: $
1474	CODE:	830	CODE:
1475	max_poll_reqs = nreqs;	831	eio_set_max_poll_reqs (nreqs);
1476		832
1477	void	833	void
1478	max_poll_time (double nseconds)	834	max_poll_time (double nseconds)
1479	PROTOTYPE: $	835	PROTOTYPE: $
1480	CODE:	836	CODE:
1481	max_poll_time = nseconds * AIO_TICKS;	837	eio_set_max_poll_time (nseconds);
1482		838
1483	void	839	void
1484	min_parallel (int nthreads)	840	min_parallel (int nthreads)
1485	PROTOTYPE: $	841	PROTOTYPE: $
		842	CODE:
		843	eio_set_min_parallel (nthreads);
1486		844
1487	void	845	void
1488	max_parallel (int nthreads)	846	max_parallel (int nthreads)
1489	PROTOTYPE: $	847	PROTOTYPE: $
		848	CODE:
		849	eio_set_max_parallel (nthreads);
1490		850
1491	void	851	void
1492	max_idle (int nthreads)	852	max_idle (int nthreads)
1493	PROTOTYPE: $	853	PROTOTYPE: $
1494	CODE:	854	CODE:
1495	set_max_idle (nthreads);	855	eio_set_max_idle (nthreads);
1496		856
1497	int	857	void
1498	max_outstanding (int maxreqs)	858	max_outstanding (int maxreqs)
1499	PROTOTYPE: $	859	PROTOTYPE: $
1500	CODE:	860	CODE:
1501	RETVAL = max_outstanding;
1502	max_outstanding = maxreqs;	861	max_outstanding = maxreqs;
1503	OUTPUT:
1504	RETVAL
1505		862
1506	void	863	void
1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	864	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1508	PROTOTYPE: $$$;$
1509	PPCODE:	865	PPCODE:
1510	{	866	{
1511	dREQ;	867	dREQ;
1512		868
1513	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
1514	req->sv1 = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
1515	req->ptr1 = SvPVbyte_nolen (req->sv1);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1516	req->int1 = flags;	872	req->int1 = flags;
1517	req->mode = mode;	873	req->int2 = mode;
1518		874
1519	REQ_SEND;	875	REQ_SEND;
1520	}	876	}
1521		877
1522	void	878	void
1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $;$
1525	ALIAS:	880	ALIAS:
1526	aio_fsync = REQ_FSYNC	881	aio_fsync = EIO_FSYNC
1527	aio_fdatasync = REQ_FDATASYNC	882	aio_fdatasync = EIO_FDATASYNC
1528	PPCODE:	883	PPCODE:
1529	{	884	{
		885	int fd = s_fileno_croak (fh, 0);
1530	dREQ;	886	dREQ;
1531		887
1532	req->type = ix;	888	req->type = ix;
1533	req->sv1 = newSVsv (fh);	889	req->sv1 = newSVsv (fh);
1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	890	req->int1 = fd;
1535		891
1536	REQ_SEND (req);	892	REQ_SEND (req);
1537	}	893	}
1538		894
1539	int
1540	_dup (int fd)
1541	PROTOTYPE: $
1542	CODE:
1543	RETVAL = dup (fd);
1544	OUTPUT:
1545	RETVAL
1546
1547	void	895	void
1548	_aio_close (int fd, SV *callback=&PL_sv_undef)	896	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1549	PROTOTYPE: $;$
1550	PPCODE:	897	PPCODE:
1551	{	898	{
		899	int fd = s_fileno_croak (fh, 0);
1552	dREQ;	900	dREQ;
1553		901
1554	req->type = REQ_CLOSE;	902	req->type = EIO_SYNC_FILE_RANGE;
		903	req->sv1 = newSVsv (fh);
1555	req->int1 = fd;	904	req->int1 = fd;
		905	req->offs = offset;
		906	req->size = nbytes;
		907	req->int2 = flags;
		908
		909	REQ_SEND (req);
		910	}
		911
		912	void
		913	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		914	PPCODE:
		915	{
		916	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		917	int fd = s_fileno_croak (fh, 0);
		918	dREQ;
		919
		920	if (close_pipe < 0)
		921	{
		922	int pipefd [2];
		923
		924	if (pipe (pipefd) < 0
		925	|| close (pipefd [1]) < 0
		926	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		927	abort (); /*D*/
		928
		929	close_pipe = pipefd [0];
		930	}
		931
		932	req->type = EIO_DUP2;
		933	req->int1 = close_pipe;
		934	req->sv2 = newSVsv (fh);
		935	req->int2 = fd;
1556		936
1557	REQ_SEND (req);	937	REQ_SEND (req);
1558	}	938	}
1559		939
1560	void	940	void
1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	941	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1562	ALIAS:	942	ALIAS:
1563	aio_read = REQ_READ	943	aio_read = EIO_READ
1564	aio_write = REQ_WRITE	944	aio_write = EIO_WRITE
1565	PROTOTYPE: $$$$$;$
1566	PPCODE:	945	PPCODE:
1567	{	946	{
1568	STRLEN svlen;	947	STRLEN svlen;
		948	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1569	char *svptr = SvPVbyte (data, svlen);	949	char *svptr = SvPVbyte (data, svlen);
1570	UV len = SvUV (length);	950	UV len = SvUV (length);
1571		951
1572	SvUPGRADE (data, SVt_PV);
1573	SvPOK_on (data);
1574
1575	if (dataoffset < 0)	952	if (dataoffset < 0)
1576	dataoffset += svlen;	953	dataoffset += svlen;
1577		954
1578	if (dataoffset < 0 || dataoffset > svlen)	955	if (dataoffset < 0 || dataoffset > svlen)
1579	croak ("dataoffset outside of data scalar");	956	croak ("dataoffset outside of data scalar");
1580		957
1581	if (ix == REQ_WRITE)	958	if (ix == EIO_WRITE)
1582	{	959	{
1583	/* write: check length and adjust. */	960	/* write: check length and adjust. */
1584	if (!SvOK (length) || len + dataoffset > svlen)	961	if (!SvOK (length) || len + dataoffset > svlen)
1585	len = svlen - dataoffset;	962	len = svlen - dataoffset;
1586	}	963	}
1587	else	964	else
1588	{	965	{
1589	/* read: grow scalar as necessary */	966	/* read: check type and grow scalar as necessary */
		967	SvUPGRADE (data, SVt_PV);
1590	svptr = SvGROW (data, len + dataoffset + 1);	968	svptr = SvGROW (data, len + dataoffset + 1);
1591	}	969	}
1592		970
1593	if (len < 0)
1594	croak ("length must not be negative");
1595
1596	{	971	{
1597	dREQ;	972	dREQ;
1598		973
1599	req->type = ix;	974	req->type = ix;
1600	req->sv1 = newSVsv (fh);	975	req->sv1 = newSVsv (fh);
1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	976	req->int1 = fd;
1602	: IoOFP (sv_2io (fh)));
1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	977	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604	req->size = len;	978	req->size = len;
1605	req->sv2 = SvREFCNT_inc (data);	979	req->sv2 = SvREFCNT_inc (data);
1606	req->ptr1 = (char *)svptr + dataoffset;	980	req->ptr2 = (char *)svptr + dataoffset;
1607	req->stroffset = dataoffset;	981	req->stroffset = dataoffset;
1608		982
1609	if (!SvREADONLY (data))	983	if (!SvREADONLY (data))
1610	{	984	{
1611	SvREADONLY_on (data);	985	SvREADONLY_on (data);
…		…
1616	}	990	}
1617	}	991	}
1618		992
1619	void	993	void
1620	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	994	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1621	PROTOTYPE: $$;$
1622	PPCODE:	995	PPCODE:
1623	{	996	{
1624	SV *data;	997	SV *data;
1625	dREQ;	998	dREQ;
1626		999
1627	data = newSV (NAME_MAX);
1628	SvPOK_on (data);
1629
1630	req->type = REQ_READLINK;	1000	req->type = EIO_READLINK;
1631	req->sv1 = newSVsv (path);	1001	req->sv1 = newSVsv (path);
1632	req->ptr2 = SvPVbyte_nolen (req->sv1);	1002	req->ptr1 = SvPVbyte_nolen (req->sv1);
1633	req->sv2 = data;
1634	req->ptr1 = SvPVbyte_nolen (data);
1635		1003
1636	REQ_SEND;	1004	REQ_SEND;
1637	}	1005	}
1638		1006
1639	void	1007	void
1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1008	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1641	PROTOTYPE: $$$$;$
1642	PPCODE:	1009	PPCODE:
1643	{	1010	{
		1011	int ifd = s_fileno_croak (in_fh , 0);
		1012	int ofd = s_fileno_croak (out_fh, 1);
1644	dREQ;	1013	dREQ;
1645		1014
1646	req->type = REQ_SENDFILE;	1015	req->type = EIO_SENDFILE;
1647	req->sv1 = newSVsv (out_fh);	1016	req->sv1 = newSVsv (out_fh);
1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1017	req->int1 = ofd;
1649	req->sv2 = newSVsv (in_fh);	1018	req->sv2 = newSVsv (in_fh);
1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1019	req->int2 = ifd;
1651	req->offs = SvVAL64 (in_offset);	1020	req->offs = in_offset;
1652	req->size = length;	1021	req->size = length;
1653		1022
1654	REQ_SEND;	1023	REQ_SEND;
1655	}	1024	}
1656		1025
1657	void	1026	void
1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1027	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1659	PROTOTYPE: $$$;$
1660	PPCODE:	1028	PPCODE:
1661	{	1029	{
		1030	int fd = s_fileno_croak (fh, 0);
1662	dREQ;	1031	dREQ;
1663		1032
1664	req->type = REQ_READAHEAD;	1033	req->type = EIO_READAHEAD;
1665	req->sv1 = newSVsv (fh);	1034	req->sv1 = newSVsv (fh);
1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1035	req->int1 = fd;
1667	req->offs = SvVAL64 (offset);	1036	req->offs = offset;
1668	req->size = length;	1037	req->size = length;
1669		1038
1670	REQ_SEND;	1039	REQ_SEND;
1671	}	1040	}
1672		1041
1673	void	1042	void
1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1043	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1675	ALIAS:	1044	ALIAS:
1676	aio_stat = REQ_STAT	1045	aio_stat = EIO_STAT
1677	aio_lstat = REQ_LSTAT	1046	aio_lstat = EIO_LSTAT
		1047	aio_statvfs = EIO_STATVFS
1678	PPCODE:	1048	PPCODE:
1679	{	1049	{
1680	dREQ;	1050	dREQ;
1681		1051
1682	req->ptr2 = malloc (sizeof (Stat_t));
1683	if (!req->ptr2)
1684	{
1685	req_destroy (req);
1686	croak ("out of memory during aio_stat statdata allocation");
1687	}
1688
1689	req->flags |= FLAG_PTR2_FREE;
1690	req->sv1 = newSVsv (fh_or_path);	1052	req->sv1 = newSVsv (fh_or_path);
1691		1053
1692	if (SvPOK (fh_or_path))	1054	if (SvPOK (req->sv1))
1693	{	1055	{
1694	req->type = ix;	1056	req->type = ix;
1695	req->ptr1 = SvPVbyte_nolen (req->sv1);	1057	req->ptr1 = SvPVbyte_nolen (req->sv1);
1696	}	1058	}
1697	else	1059	else
1698	{	1060	{
1699	req->type = REQ_FSTAT;	1061	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1062	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1701	}	1063	}
1702		1064
1703	REQ_SEND;	1065	REQ_SEND;
1704	}	1066	}
…		…
1711		1073
1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1074	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1075	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714	req->sv1 = newSVsv (fh_or_path);	1076	req->sv1 = newSVsv (fh_or_path);
1715		1077
1716	if (SvPOK (fh_or_path))	1078	if (SvPOK (req->sv1))
1717	{	1079	{
1718	req->type = REQ_UTIME;	1080	req->type = EIO_UTIME;
1719	req->ptr1 = SvPVbyte_nolen (req->sv1);	1081	req->ptr1 = SvPVbyte_nolen (req->sv1);
1720	}	1082	}
1721	else	1083	else
1722	{	1084	{
1723	req->type = REQ_FUTIME;	1085	req->type = EIO_FUTIME;
1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1086	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725	}	1087	}
1726		1088
1727	REQ_SEND;	1089	REQ_SEND;
1728	}	1090	}
…		…
1734	dREQ;	1096	dREQ;
1735		1097
1736	req->sv1 = newSVsv (fh_or_path);	1098	req->sv1 = newSVsv (fh_or_path);
1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1099	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738		1100
1739	if (SvPOK (fh_or_path))	1101	if (SvPOK (req->sv1))
1740	{	1102	{
1741	req->type = REQ_TRUNCATE;	1103	req->type = EIO_TRUNCATE;
1742	req->ptr1 = SvPVbyte_nolen (req->sv1);	1104	req->ptr1 = SvPVbyte_nolen (req->sv1);
1743	}	1105	}
1744	else	1106	else
1745	{	1107	{
1746	req->type = REQ_FTRUNCATE;	1108	req->type = EIO_FTRUNCATE;
1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1109	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748	}	1110	}
1749		1111
1750	REQ_SEND;	1112	REQ_SEND;
1751	}	1113	}
1752		1114
1753	void	1115	void
1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1116	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1117	ALIAS:
		1118	aio_chmod = EIO_CHMOD
		1119	aio_mkdir = EIO_MKDIR
1755	PPCODE:	1120	PPCODE:
1756	{	1121	{
1757	dREQ;	1122	dREQ;
1758		1123
1759	req->mode = mode;	1124	req->int2 = mode;
1760	req->sv1 = newSVsv (fh_or_path);	1125	req->sv1 = newSVsv (fh_or_path);
1761		1126
1762	if (SvPOK (fh_or_path))	1127	if (SvPOK (req->sv1))
1763	{	1128	{
1764	req->type = REQ_CHMOD;	1129	req->type = ix;
1765	req->ptr1 = SvPVbyte_nolen (req->sv1);	1130	req->ptr1 = SvPVbyte_nolen (req->sv1);
1766	}	1131	}
1767	else	1132	else
1768	{	1133	{
1769	req->type = REQ_FCHMOD;	1134	req->type = EIO_FCHMOD;
1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1135	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771	}	1136	}
1772		1137
1773	REQ_SEND;	1138	REQ_SEND;
1774	}	1139	}
…		…
1781		1146
1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1147	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1148	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784	req->sv1 = newSVsv (fh_or_path);	1149	req->sv1 = newSVsv (fh_or_path);
1785		1150
1786	if (SvPOK (fh_or_path))	1151	if (SvPOK (req->sv1))
1787	{	1152	{
1788	req->type = REQ_CHOWN;	1153	req->type = EIO_CHOWN;
1789	req->ptr1 = SvPVbyte_nolen (req->sv1);	1154	req->ptr1 = SvPVbyte_nolen (req->sv1);
1790	}	1155	}
1791	else	1156	else
1792	{	1157	{
1793	req->type = REQ_FCHOWN;	1158	req->type = EIO_FCHOWN;
1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1159	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1795	}	1160	}
1796		1161
1797	REQ_SEND;	1162	REQ_SEND;
1798	}	1163	}
1799		1164
1800	void	1165	void
		1166	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1167	PPCODE:
		1168	{
		1169	dREQ;
		1170
		1171	req->type = EIO_READDIR;
		1172	req->sv1 = newSVsv (pathname);
		1173	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1174	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1175
		1176	if (flags & EIO_READDIR_DENTS)
		1177	req->int1 |= EIO_READDIR_CUSTOM2;
		1178
		1179	REQ_SEND;
		1180	}
		1181
		1182	void
1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1183	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1802	ALIAS:	1184	ALIAS:
1803	aio_unlink = REQ_UNLINK	1185	aio_unlink = EIO_UNLINK
1804	aio_rmdir = REQ_RMDIR	1186	aio_rmdir = EIO_RMDIR
1805	aio_readdir = REQ_READDIR	1187	aio_readdir = EIO_READDIR
1806	PPCODE:	1188	PPCODE:
1807	{	1189	{
1808	dREQ;	1190	dREQ;
1809		1191
1810	req->type = ix;	1192	req->type = ix;
…		…
1813		1195
1814	REQ_SEND;	1196	REQ_SEND;
1815	}	1197	}
1816		1198
1817	void	1199	void
1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1819	PPCODE:
1820	{
1821	dREQ;
1822
1823	req->type = REQ_MKDIR;
1824	req->sv1 = newSVsv (pathname);
1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
1826	req->mode = mode;
1827
1828	REQ_SEND;
1829	}
1830
1831	void
1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1200	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833	ALIAS:	1201	ALIAS:
1834	aio_link = REQ_LINK	1202	aio_link = EIO_LINK
1835	aio_symlink = REQ_SYMLINK	1203	aio_symlink = EIO_SYMLINK
1836	aio_rename = REQ_RENAME	1204	aio_rename = EIO_RENAME
1837	PPCODE:	1205	PPCODE:
1838	{	1206	{
1839	dREQ;	1207	dREQ;
1840		1208
1841	req->type = ix;	1209	req->type = ix;
1842	req->sv2 = newSVsv (oldpath);	1210	req->sv1 = newSVsv (oldpath);
		1211	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1212	req->sv2 = newSVsv (newpath);
1843	req->ptr2 = SvPVbyte_nolen (req->sv2);	1213	req->ptr2 = SvPVbyte_nolen (req->sv2);
1844	req->sv1 = newSVsv (newpath);
1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1846		1214
1847	REQ_SEND;	1215	REQ_SEND;
1848	}	1216	}
1849		1217
1850	void	1218	void
1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1219	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1852	PPCODE:	1220	PPCODE:
1853	{	1221	{
1854	dREQ;	1222	dREQ;
1855		1223
1856	req->type = REQ_MKNOD;	1224	req->type = EIO_MKNOD;
1857	req->sv1 = newSVsv (pathname);	1225	req->sv1 = newSVsv (pathname);
1858	req->ptr1 = SvPVbyte_nolen (req->sv1);	1226	req->ptr1 = SvPVbyte_nolen (req->sv1);
1859	req->mode = (mode_t)mode;	1227	req->int2 = (mode_t)mode;
1860	req->offs = dev;	1228	req->offs = dev;
1861		1229
1862	REQ_SEND;	1230	REQ_SEND;
1863	}	1231	}
1864		1232
1865	void	1233	void
		1234	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1235	ALIAS:
		1236	aio_mtouch = EIO_MTOUCH
		1237	aio_msync = EIO_MSYNC
		1238	PPCODE:
		1239	{
		1240	STRLEN svlen;
		1241	char *svptr = SvPVbyte (data, svlen);
		1242	UV len = SvUV (length);
		1243
		1244	if (offset < 0)
		1245	offset += svlen;
		1246
		1247	if (offset < 0 || offset > svlen)
		1248	croak ("offset outside of scalar");
		1249
		1250	if (!SvOK (length) || len + offset > svlen)
		1251	len = svlen - offset;
		1252
		1253	{
		1254	dREQ;
		1255
		1256	req->type = ix;
		1257	req->sv2 = SvREFCNT_inc (data);
		1258	req->ptr2 = (char *)svptr + offset;
		1259	req->size = len;
		1260	req->int1 = flags;
		1261
		1262	REQ_SEND;
		1263	}
		1264	}
		1265
		1266	void
		1267	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1268	PPCODE:
		1269	{
		1270	STRLEN svlen;
		1271	char *svptr = SvPVbyte (data, svlen);
		1272	UV len = SvUV (length);
		1273
		1274	if (offset < 0)
		1275	offset += svlen;
		1276
		1277	if (offset < 0 || offset > svlen)
		1278	croak ("offset outside of scalar");
		1279
		1280	if (!SvOK (length) || len + offset > svlen)
		1281	len = svlen - offset;
		1282
		1283	{
		1284	dREQ;
		1285
		1286	req->type = EIO_MLOCK;
		1287	req->sv2 = SvREFCNT_inc (data);
		1288	req->ptr2 = (char *)svptr + offset;
		1289	req->size = len;
		1290
		1291	REQ_SEND;
		1292	}
		1293	}
		1294
		1295	void
		1296	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1297	PPCODE:
		1298	{
		1299	dREQ;
		1300
		1301	req->type = EIO_MLOCKALL;
		1302	req->int1 = flags;
		1303
		1304	REQ_SEND;
		1305	}
		1306
		1307	void
1866	aio_busy (double delay, SV *callback=&PL_sv_undef)	1308	aio_busy (double delay, SV *callback=&PL_sv_undef)
1867	PPCODE:	1309	PPCODE:
1868	{	1310	{
1869	dREQ;	1311	dREQ;
1870		1312
1871	req->type = REQ_BUSY;	1313	req->type = EIO_BUSY;
1872	req->nv1 = delay < 0. ? 0. : delay;	1314	req->nv1 = delay < 0. ? 0. : delay;
1873		1315
1874	REQ_SEND;	1316	REQ_SEND;
1875	}	1317	}
1876		1318
1877	void	1319	void
1878	aio_group (SV *callback=&PL_sv_undef)	1320	aio_group (SV *callback=&PL_sv_undef)
1879	PROTOTYPE: ;$
1880	PPCODE:	1321	PPCODE:
1881	{	1322	{
1882	dREQ;	1323	dREQ;
1883		1324
1884	req->type = REQ_GROUP;	1325	req->type = EIO_GROUP;
1885		1326
1886	req_send (req);	1327	req_submit (req);
1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1328	XPUSHs (req_sv (req, aio_grp_stash));
1888	}	1329	}
1889		1330
1890	void	1331	void
1891	aio_nop (SV *callback=&PL_sv_undef)	1332	aio_nop (SV *callback=&PL_sv_undef)
		1333	ALIAS:
		1334	aio_nop = EIO_NOP
		1335	aio_sync = EIO_SYNC
1892	PPCODE:	1336	PPCODE:
1893	{	1337	{
1894	dREQ;	1338	dREQ;
1895		1339
1896	req->type = REQ_NOP;	1340	req->type = ix;
1897		1341
1898	REQ_SEND;	1342	REQ_SEND;
1899	}	1343	}
1900		1344
1901	int	1345	int
1902	aioreq_pri (int pri = 0)	1346	aioreq_pri (int pri = 0)
1903	PROTOTYPE: ;$
1904	CODE:	1347	CODE:
1905	RETVAL = next_pri - PRI_BIAS;	1348	RETVAL = next_pri;
1906	if (items > 0)	1349	if (items > 0)
1907	{	1350	{
1908	if (pri < PRI_MIN) pri = PRI_MIN;	1351	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1909	if (pri > PRI_MAX) pri = PRI_MAX;	1352	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1910	next_pri = pri + PRI_BIAS;	1353	next_pri = pri;
1911	}	1354	}
1912	OUTPUT:	1355	OUTPUT:
1913	RETVAL	1356	RETVAL
1914		1357
1915	void	1358	void
1916	aioreq_nice (int nice = 0)	1359	aioreq_nice (int nice = 0)
1917	CODE:	1360	CODE:
1918	nice = next_pri - nice;	1361	nice = next_pri - nice;
1919	if (nice < PRI_MIN) nice = PRI_MIN;	1362	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1920	if (nice > PRI_MAX) nice = PRI_MAX;	1363	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1921	next_pri = nice + PRI_BIAS;	1364	next_pri = nice;
1922		1365
1923	void	1366	void
1924	flush ()	1367	flush ()
1925	PROTOTYPE:
1926	CODE:	1368	CODE:
1927	while (nreqs)	1369	while (eio_nreqs ())
1928	{	1370	{
1929	poll_wait ();	1371	poll_wait ();
1930	poll_cb ();	1372	poll_cb ();
1931	}	1373	}
1932		1374
1933	int	1375	int
1934	poll()	1376	poll ()
1935	PROTOTYPE:
1936	CODE:	1377	CODE:
1937	poll_wait ();	1378	poll_wait ();
1938	RETVAL = poll_cb ();	1379	RETVAL = poll_cb ();
1939	OUTPUT:	1380	OUTPUT:
1940	RETVAL	1381	RETVAL
1941		1382
1942	int	1383	int
1943	poll_fileno()	1384	poll_fileno ()
1944	PROTOTYPE:
1945	CODE:	1385	CODE:
1946	RETVAL = respipe [0];	1386	RETVAL = s_epipe_fd (&respipe);
1947	OUTPUT:	1387	OUTPUT:
1948	RETVAL	1388	RETVAL
1949		1389
1950	int	1390	int
1951	poll_cb(...)	1391	poll_cb (...)
1952	PROTOTYPE:	1392	PROTOTYPE:
1953	CODE:	1393	CODE:
1954	RETVAL = poll_cb ();	1394	RETVAL = poll_cb ();
1955	OUTPUT:	1395	OUTPUT:
1956	RETVAL	1396	RETVAL
1957		1397
1958	void	1398	void
1959	poll_wait()	1399	poll_wait ()
1960	PROTOTYPE:
1961	CODE:	1400	CODE:
1962	poll_wait ();	1401	poll_wait ();
1963		1402
1964	void
1965	setsig (int signum = SIGIO)
1966	PROTOTYPE: ;$
1967	CODE:
1968	{
1969	if (block_sig_level)
1970	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1971
1972	X_LOCK (reslock);
1973	main_tid = pthread_self ();
1974	main_sig = signum;
1975	X_UNLOCK (reslock);
1976
1977	if (main_sig && npending)
1978	pthread_kill (main_tid, main_sig);
1979	}
1980
1981	void
1982	aio_block (SV *cb)
1983	PROTOTYPE: &
1984	PPCODE:
1985	{
1986	int count;
1987
1988	block_sig ();
1989	PUSHMARK (SP);
1990	PUTBACK;
1991	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1992	SPAGAIN;
1993	unblock_sig ();
1994
1995	if (SvTRUE (ERRSV))
1996	croak (0);
1997
1998	XSRETURN (count);
1999	}
2000
2001	int	1403	int
2002	nreqs()	1404	nreqs ()
2003	PROTOTYPE:
2004	CODE:	1405	CODE:
2005	RETVAL = nreqs;	1406	RETVAL = eio_nreqs ();
2006	OUTPUT:	1407	OUTPUT:
2007	RETVAL	1408	RETVAL
2008		1409
2009	int	1410	int
2010	nready()	1411	nready ()
2011	PROTOTYPE:
2012	CODE:	1412	CODE:
2013	RETVAL = get_nready ();	1413	RETVAL = eio_nready ();
2014	OUTPUT:	1414	OUTPUT:
2015	RETVAL	1415	RETVAL
2016		1416
2017	int	1417	int
2018	npending()	1418	npending ()
2019	PROTOTYPE:
2020	CODE:	1419	CODE:
2021	RETVAL = get_npending ();	1420	RETVAL = eio_npending ();
2022	OUTPUT:	1421	OUTPUT:
2023	RETVAL	1422	RETVAL
2024		1423
2025	int	1424	int
2026	nthreads()	1425	nthreads ()
2027	PROTOTYPE:
2028	CODE:	1426	CODE:
2029	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1427	RETVAL = eio_nthreads ();
2030	RETVAL = started;
2031	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2032	OUTPUT:	1428	OUTPUT:
2033	RETVAL	1429	RETVAL
2034		1430
		1431	int
		1432	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1433	CODE:
		1434	RETVAL = posix_fadvise (fh, offset, length, advice);
		1435	OUTPUT:
		1436	RETVAL
		1437
		1438	ssize_t
		1439	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1440	CODE:
		1441	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1442	OUTPUT:
		1443	RETVAL
		1444
		1445	void
		1446	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1447	PPCODE:
		1448	sv_unmagic (scalar, MMAP_MAGIC);
		1449	{
		1450	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1451	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1452	if (addr == (void *)-1)
		1453	XSRETURN_NO;
		1454
		1455	sv_force_normal (scalar);
		1456
		1457	/* we store the length in mg_obj, as namlen is I32 :/ */
		1458	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1459	->mg_obj = (SV *)length;
		1460
		1461	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1462
		1463	if (!(prot & PROT_WRITE))
		1464	SvREADONLY_on (scalar);
		1465
		1466	if (SvLEN (scalar))
		1467	Safefree (SvPVX (scalar));
		1468
		1469	SvPVX (scalar) = (char *)addr;
		1470	SvCUR_set (scalar, length);
		1471	SvLEN_set (scalar, 0);
		1472	SvPOK_only (scalar);
		1473
		1474	XSRETURN_YES;
		1475	}
		1476
		1477	void
		1478	munmap (SV *scalar)
		1479	CODE:
		1480	sv_unmagic (scalar, MMAP_MAGIC);
		1481
		1482	int
		1483	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1484	ALIAS:
		1485	mprotect = 1
		1486	CODE:
		1487	{
		1488	STRLEN svlen;
		1489	void *addr = SvPVbyte (scalar, svlen);
		1490	size_t len = SvUV (length);
		1491
		1492	if (offset < 0)
		1493	offset += svlen;
		1494
		1495	if (offset < 0 || offset > svlen)
		1496	croak ("offset outside of scalar");
		1497
		1498	if (!SvOK (length) || len + offset > svlen)
		1499	len = svlen - offset;
		1500
		1501	addr = (void *)(((intptr_t)addr) + offset);
		1502	eio_page_align (&addr, &len);
		1503
		1504	switch (ix)
		1505	{
		1506	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1507	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1508	}
		1509	}
		1510	OUTPUT:
		1511	RETVAL
		1512
		1513	int
		1514	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1515	CODE:
		1516	{
		1517	STRLEN svlen;
		1518	void *addr = SvPVbyte (scalar, svlen);
		1519	size_t len = SvUV (length);
		1520
		1521	if (offset < 0)
		1522	offset += svlen;
		1523
		1524	if (offset < 0 || offset > svlen)
		1525	croak ("offset outside of scalar");
		1526
		1527	if (!SvOK (length) || len + offset > svlen)
		1528	len = svlen - offset;
		1529
		1530	addr = (void *)(((intptr_t)addr) + offset);
		1531	eio_page_align (&addr, &len);
		1532	#if _POSIX_MEMLOCK_RANGE
		1533	RETVAL = munlock (addr, len);
		1534	#else
		1535	RETVAL = ((errno = ENOSYS), -1);
		1536	#endif
		1537	}
		1538	OUTPUT:
		1539	RETVAL
		1540
		1541	int
		1542	munlockall ()
		1543	CODE:
		1544	#if _POSIX_MEMLOCK
		1545	munlockall ();
		1546	#else
		1547	RETVAL = -1;
		1548	errno = ENOSYS;
		1549	#endif
		1550	OUTPUT:
		1551	RETVAL
		1552
		1553	void _on_next_submit (SV *cb)
		1554	CODE:
		1555	SvREFCNT_dec (on_next_submit);
		1556	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1557
2035	PROTOTYPES: DISABLE	1558	PROTOTYPES: DISABLE
2036		1559
2037	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1560	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2038		1561
2039	void	1562	void
2040	cancel (aio_req_ornot req)	1563	cancel (aio_req_ornot req)
2041	CODE:	1564	CODE:
2042	req_cancel (req);	1565	eio_cancel (req);
2043		1566
2044	void	1567	void
2045	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1568	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2046	CODE:	1569	PPCODE:
		1570	{
		1571	if (GIMME_V != G_VOID)
		1572	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1573
		1574	if (items > 1)
		1575	{
		1576	SV *cb_cv =get_cb (callback);
		1577
2047	SvREFCNT_dec (req->callback);	1578	SvREFCNT_dec (req->callback);
2048	req->callback = newSVsv (callback);	1579	req->callback = SvREFCNT_inc (cb_cv);
		1580	}
		1581	}
2049		1582
2050	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1583	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2051		1584
2052	void	1585	void
2053	add (aio_req grp, ...)	1586	add (aio_req grp, ...)
2054	PPCODE:	1587	PPCODE:
2055	{	1588	{
2056	int i;	1589	int i;
2057	aio_req req;
2058
2059	if (main_sig && !block_sig_level)
2060	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2061		1590
2062	if (grp->int1 == 2)	1591	if (grp->int1 == 2)
2063	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1592	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2064		1593
2065	for (i = 1; i < items; ++i )	1594	for (i = 1; i < items; ++i )
2066	{	1595	{
		1596	aio_req req;
		1597
2067	if (GIMME_V != G_VOID)	1598	if (GIMME_V != G_VOID)
2068	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1599	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2069		1600
2070	req = SvAIO_REQ (ST (i));	1601	req = SvAIO_REQ (ST (i));
2071		1602
2072	if (req)	1603	if (req)
2073	{	1604	eio_grp_add (grp, req);
2074	++grp->size;
2075	req->grp = grp;
2076
2077	req->grp_prev = 0;
2078	req->grp_next = grp->grp_first;
2079
2080	if (grp->grp_first)
2081	grp->grp_first->grp_prev = req;
2082
2083	grp->grp_first = req;
2084	}
2085	}	1605	}
2086	}	1606	}
2087		1607
2088	void	1608	void
2089	cancel_subs (aio_req_ornot req)	1609	cancel_subs (aio_req_ornot req)
…		…
2098	AV *av;	1618	AV *av;
2099		1619
2100	grp->errorno = errno;	1620	grp->errorno = errno;
2101		1621
2102	av = newAV ();	1622	av = newAV ();
		1623	av_extend (av, items - 1);
2103		1624
2104	for (i = 1; i < items; ++i )	1625	for (i = 1; i < items; ++i )
2105	av_push (av, newSVsv (ST (i)));	1626	av_push (av, newSVsv (ST (i)));
2106		1627
2107	SvREFCNT_dec (grp->sv1);	1628	SvREFCNT_dec (grp->sv1);
…		…
2114	grp->errorno = errorno;	1635	grp->errorno = errorno;
2115		1636
2116	void	1637	void
2117	limit (aio_req grp, int limit)	1638	limit (aio_req grp, int limit)
2118	CODE:	1639	CODE:
2119	grp->int2 = limit;	1640	eio_grp_limit (grp, limit);
2120	aio_grp_feed (grp);
2121		1641
2122	void	1642	void
2123	feed (aio_req grp, SV *callback=&PL_sv_undef)	1643	feed (aio_req grp, SV *callback=&PL_sv_undef)
2124	CODE:	1644	CODE:
2125	{	1645	{
2126	SvREFCNT_dec (grp->sv2);	1646	SvREFCNT_dec (grp->sv2);
2127	grp->sv2 = newSVsv (callback);	1647	grp->sv2 = newSVsv (callback);
		1648	grp->feed = aio_grp_feed;
2128		1649
2129	if (grp->int2 <= 0)	1650	if (grp->int2 <= 0)
2130	grp->int2 = 2;	1651	grp->int2 = 2;
2131		1652
2132	aio_grp_feed (grp);	1653	eio_grp_limit (grp, grp->int2);
2133	}	1654	}
2134		1655

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