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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 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	#define dBUF \	96	/*****************************************************************************/
103	char *aio_buf; \	97
104	X_LOCK (wrklock); \	98	#if __GNUC__ >= 3
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_UNLOCK (wrklock); \	100	#else
107	if (!aio_buf) \	101	# define expect(expr,value) (expr)
108	return -1;	102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
109		108
110	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/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)
111		244
112	enum {	245	enum {
113	REQ_QUIT,	246	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};	247	};
129		248
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	249	#include "libeio/eio.c"
131	#define AIO_GRP_KLASS "IO::AIO::GRP"
132		250
133	typedef struct aio_cb
134	{
135	struct aio_cb *volatile next;
136
137	SV *callback;
138	SV *sv1, *sv2;
139	void *ptr1, *ptr2;
140	off_t offs;
141	size_t size;
142	ssize_t result;
143	double nv1, nv2;
144
145	STRLEN stroffset;
146	int type;
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150
151	unsigned char flags;
152	unsigned char pri;
153
154	SV *self; /* the perl counterpart of this request, if any */
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
156	} aio_cb;
157
158	enum {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};
163
164	typedef aio_cb *aio_req;	251	typedef eio_req *aio_req;
165	typedef aio_cb *aio_req_ornot;	252	typedef eio_req *aio_req_ornot;
166		253
167	enum {	254	static SV *on_next_submit;
168	PRI_MIN = -4,	255	static int next_pri = EIO_PRI_DEFAULT;
169	PRI_MAX = 4,	256	static int max_outstanding;
170		257
171	DEFAULT_PRI = 0,	258	static s_epipe respipe;
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175		259
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187
188	static thread_t main_tid;
189	static int main_sig;
190	static int block_sig_level;
191
192	void block_sig ()
193	{
194	sigset_t ss;
195
196	if (block_sig_level++)
197	return;
198
199	if (!main_sig)
200	return;
201
202	sigemptyset (&ss);
203	sigaddset (&ss, main_sig);
204	pthread_sigmask (SIG_BLOCK, &ss, 0);
205	}
206
207	void unblock_sig ()
208	{
209	sigset_t ss;
210
211	if (--block_sig_level)
212	return;
213
214	if (!main_sig)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224	static unsigned int started, idle, wanted;
225
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{
247	closedir (wrk->dirp);
248	wrk->dirp = 0;
249	}
250
251	if (wrk->dbuf)
252	{
253	free (wrk->dbuf);
254	wrk->dbuf = 0;
255	}
256	}
257
258	static void worker_free (worker *wrk)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe_osf [2], respipe [2] = { -1, -1 };
270
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;
353
354	--q->size;
355
356	for (pri = NUM_PRI; pri--; )
357	{
358	aio_req req = q->qs[pri];
359
360	if (req)
361	{
362	if (!(q->qs[pri] = req->next))
363	q->qe[pri] = 0;
364
365	return req;
366	}
367	}
368
369	abort ();
370	}
371
372	static int poll_cb ();
373	static int req_invoke (aio_req req);
374	static void req_destroy (aio_req req);	260	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	261	static void req_cancel (aio_req req);
376		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
377	/* must be called at most once */	275	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	276	static SV *req_sv (aio_req req, HV *stash)
379	{	277	{
380	if (!req->self)	278	if (!req->self)
381	{	279	{
382	req->self = (SV *)newHV ();	280	req->self = (SV *)newHV ();
383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	281	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384	}	282	}
385		283
386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	284	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387	}	285	}
388		286
389	static aio_req SvAIO_REQ (SV *sv)	287	static aio_req SvAIO_REQ (SV *sv)
390	{	288	{
391	MAGIC *mg;	289	MAGIC *mg;
392		290
393	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")))
394	croak ("object of class " AIO_REQ_KLASS " expected");	295	croak ("object of class IO::AIO::REQ expected");
395		296
396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	297	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397		298
398	return mg ? (aio_req)mg->mg_ptr : 0;	299	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	300	}
400		301
401	static void aio_grp_feed (aio_req grp)	302	static void aio_grp_feed (aio_req grp)
402	{	303	{
403	block_sig ();	304	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	305	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	306	dSP;
412		307
413	ENTER;	308	ENTER;
414	SAVETMPS;	309	SAVETMPS;
415	PUSHMARK (SP);	310	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	311	XPUSHs (req_sv (grp, aio_grp_stash));
417	PUTBACK;	312	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	313	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	314	SPAGAIN;
420	FREETMPS;	315	FREETMPS;
421	LEAVE;	316	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	317	}
432
433	unblock_sig ();
434	}	318	}
435		319
436	static void aio_grp_dec (aio_req grp)	320	static void req_submit (eio_req *req)
437	{	321	{
438	--grp->size;	322	eio_submit (req);
439		323
440	/* call feeder, if applicable */	324	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	325	{
446	block_sig ();	326	dSP;
		327	SV *cb = sv_2mortal (on_next_submit);
447		328
448	if (!req_invoke (grp))	329	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		330
455	req_destroy (grp);	331	PUSHMARK (SP);
456	unblock_sig ();	332	PUTBACK;
		333	call_sv (cb, G_DISCARD | G_EVAL);
457	}	334	}
458	}	335	}
459		336
460	static int req_invoke (aio_req req)	337	static int req_invoke (eio_req *req)
461	{	338	{
462	dSP;
463
464	if (req->flags & FLAG_SV2_RO_OFF)	339	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	340	SvREADONLY_off (req->sv2);
466		341
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	342	if (!EIO_CANCELLED (req) && req->callback)
468	{	343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
469	ENTER;	348	ENTER;
470	SAVETMPS;	349	SAVETMPS;
471	PUSHMARK (SP);	350	PUSHMARK (SP);
472	EXTEND (SP, 1);	351	EXTEND (SP, 1);
473		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
474	switch (req->type)	366	switch (req->type)
475	{	367	{
476	case REQ_READDIR:	368	case EIO_READDIR:
477	{	369	{
478	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
479		371
480	if (req->result >= 0)	372	if (req->result >= 0)
481	{	373	{
482	int i;	374	int i;
483	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484	AV *av = newAV ();	377	AV *av = newAV ();
485		378
486	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
487		380
488	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
489	{	382	{
490	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491		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
492	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);
493	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
494	}	417	}
495		418
496	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
497	}	420	}
498		421
499	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))));
500	}	426	}
501	break;	427	break;
502		428
503	case REQ_OPEN:	429	case EIO_OPEN:
504	{	430	{
505	/* convert fd to fh */	431	/* convert fd to fh */
506	SV *fh;	432	SV *fh = &PL_sv_undef;
507		433
508	PUSHs (sv_2mortal (newSViv (req->result)));	434	if (req->result >= 0)
509	PUTBACK;	435	{
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	436	GV *gv = (GV *)sv_newmortal ();
511	SPAGAIN;	437	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		438	char sym [64];
		439	int symlen;
		440
		441	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		442	gv_init (gv, aio_stash, sym, symlen, 0);
512		443
513	fh = POPs;	444	symlen = snprintf (
514	PUSHMARK (SP);	445	sym,
		446	sizeof (sym),
		447	"%s&=%d",
		448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		449	(int)req->result
		450	);
		451
		452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		453	fh = (SV *)gv;
		454	}
		455
515	XPUSHs (fh);	456	PUSHs (fh);
516	}	457	}
517	break;	458	break;
518		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
519	case REQ_GROUP:	490	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
521		492
522	if (req->sv1)	493	if (req->sv1)
523	{	494	{
524	int i;	495	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
530	}	501	}
531	break;	502	break;
532		503
533	case REQ_NOP:	504	case EIO_NOP:
534	case REQ_BUSY:	505	case EIO_BUSY:
535	break;	506	break;
536		507
537	case REQ_READLINK:	508	case EIO_READLINK:
538	if (req->result > 0)	509	if (req->result > 0)
539	{	510	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
540	SvCUR_set (req->sv2, req->result);
541	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);
543	}
544	break;	511	break;
545		512
546	case REQ_STAT:	513	case EIO_STAT:
547	case REQ_LSTAT:	514	case EIO_LSTAT:
548	case REQ_FSTAT:	515	case EIO_FSTAT:
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
550	PL_laststatval = req->result;	517	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
553	break;	520	break;
554		521
555	case REQ_READ:	522	case EIO_READ:
		523	{
556	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));
557	*SvEND (req->sv2) = 0;	525	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
559	break;	530	break;
560		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
561	default:	537	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
563	break;	539	break;
564	}	540	}
565		541
566	errno = req->errorno;	542	errno = req->errorno;
567		543
568	PUTBACK;	544	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	546	SPAGAIN;
		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;
571		552
572	FREETMPS;	553	FREETMPS;
573	LEAVE;	554	LEAVE;
		555
		556	PUTBACK;
574	}	557	}
575		558
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	559	return !!SvTRUE (ERRSV);
591	}	560	}
592		561
593	static void req_destroy (aio_req req)	562	static void req_destroy (aio_req req)
594	{	563	{
595	if (req->self)	564	if (req->self)
…		…
600		569
601	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
603	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
604		573
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	574	Safefree (req);
609	}	575	}
610		576
611	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
612	{	578	{
613	aio_req sub;	579	aio_req sub;
614		580
615	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
616	return;	582	return;
617		583
618	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	585	grp->sv2 = 0;
620		586
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}	588	}
624
625	static void req_cancel (aio_req req)
626	{
627	req->flags |= FLAG_CANCELLED;
628
629	req_cancel_subs (req);
630	}
631
632	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else
635	# define TO_SOCKET(x) (x)
636	#endif
637		589
638	static void	590	static void
639	create_respipe ()	591	create_respipe (void)
640	{	592	{
641	int old_readfd = respipe [0];
642
643	if (respipe [1] >= 0)
644	respipe_close (TO_SOCKET (respipe [1]));
645
646	#ifdef _WIN32
647	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
648	#else
649	if (pipe (respipe))	593	if (s_epipe_renew (&respipe))
650	#endif
651	croak ("unable to initialize result pipe");	594	croak ("IO::AIO: unable to initialize result pipe");
652
653	if (old_readfd >= 0)
654	{
655	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
656	croak ("unable to initialize result pipe(2)");
657
658	respipe_close (respipe [0]);
659	respipe [0] = old_readfd;
660	}
661
662	#ifdef _WIN32
663	int arg = 1;
664	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
665	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
666	#else
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
668	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
669	#endif
670	croak ("unable to initialize result pipe(3)");
671
672	respipe_osf [0] = TO_SOCKET (respipe [0]);
673	respipe_osf [1] = TO_SOCKET (respipe [1]);
674	}	595	}
675		596
676	X_THREAD_PROC (aio_proc);
677
678	static void start_thread (void)
679	{
680	worker *wrk = calloc (1, sizeof (worker));
681
682	if (!wrk)
683	croak ("unable to allocate worker thread data");
684
685	X_LOCK (wrklock);
686
687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688	{
689	wrk->prev = &wrk_first;
690	wrk->next = wrk_first.next;
691	wrk_first.next->prev = wrk;
692	wrk_first.next = wrk;
693	++started;
694	}
695	else
696	free (wrk);
697
698	X_UNLOCK (wrklock);
699	}
700
701	static void maybe_start_thread ()
702	{
703	if (get_nthreads () >= wanted)
704	return;
705
706	/* todo: maybe use idle here, but might be less exact */
707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708	return;
709
710	start_thread ();
711	}
712
713	static void req_send (aio_req req)
714	{
715	block_sig ();
716
717	++nreqs;
718
719	X_LOCK (reqlock);
720	++nready;
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	unblock_sig ();
726
727	maybe_start_thread ();
728	}
729
730	static void end_thread (void)
731	{
732	aio_req req;
733
734	Newz (0, req, 1, aio_cb);
735
736	req->type = REQ_QUIT;
737	req->pri = PRI_MAX + PRI_BIAS;
738
739	X_LOCK (reqlock);
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	X_LOCK (wrklock);
745	--started;
746	X_UNLOCK (wrklock);
747	}
748
749	static void set_max_idle (int nthreads)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752	max_idle = nthreads <= 0 ? 1 : nthreads;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754	}
755
756	static void min_parallel (int nthreads)
757	{
758	if (wanted < nthreads)
759	wanted = nthreads;
760	}
761
762	static void max_parallel (int nthreads)
763	{
764	if (wanted > nthreads)
765	wanted = nthreads;
766
767	while (started > wanted)
768	end_thread ();
769	}
770
771	static void poll_wait ()	597	static void poll_wait (void)
772	{	598	{
773	fd_set rfd;
774
775	while (nreqs)	599	while (eio_nreqs ())
776	{	600	{
777	int size;	601	int size;
778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	602
		603	X_LOCK (reslock);
779	size = res_queue.size;	604	size = res_queue.size;
780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	605	X_UNLOCK (reslock);
781		606
782	if (size)	607	if (size)
783	return;	608	return;
784		609
785	maybe_start_thread ();	610	etp_maybe_start_thread ();
786		611
787	FD_ZERO (&rfd);	612	s_epipe_wait (&respipe);
788	FD_SET (respipe [0], &rfd);
789
790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791	}	613	}
792	}	614	}
793		615
794	static int poll_cb ()	616	static int poll_cb (void)
795	{	617	{
796	dSP;
797	int count = 0;
798	int maxreqs = max_poll_reqs;
799	int do_croak = 0;
800	struct timeval tv_start, tv_now;
801	aio_req req;
802
803	if (max_poll_time)
804	gettimeofday (&tv_start, 0);
805
806	block_sig ();
807
808	for (;;)	618	for (;;)
809	{	619	{
810	for (;;)	620	int res = eio_poll ();
811	{
812	maybe_start_thread ();
813		621
814	X_LOCK (reslock);	622	if (res > 0)
815	req = reqq_shift (&res_queue);
816
817	if (req)
818	{
819	--npending;
820
821	if (!res_queue.size)
822	{
823	/* read any signals sent by the worker threads */
824	char buf [4];
825	while (respipe_read (respipe [0], buf, 4) == 4)
826	;
827	}
828	}
829
830	X_UNLOCK (reslock);
831
832	if (!req)
833	break;
834
835	--nreqs;
836
837	if (req->type == REQ_GROUP && req->size)
838	{
839	req->int1 = 1; /* mark request as delayed */
840	continue;
841	}
842	else
843	{
844	if (!req_invoke (req))
845	{
846	req_destroy (req);
847	unblock_sig ();
848	croak (0);	623	croak (0);
849	}
850		624
851	count++;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
852	}	626	return res;
853
854	req_destroy (req);
855
856	if (maxreqs && !--maxreqs)
857	break;
858
859	if (max_poll_time)
860	{
861	gettimeofday (&tv_now, 0);
862
863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864	break;
865	}
866	}
867
868	if (nreqs <= max_outstanding)
869	break;
870		627
871	poll_wait ();	628	poll_wait ();
872
873	++maxreqs;
874	}	629	}
		630	}
875		631
876	unblock_sig ();	632	static void atfork_child (void)
877	return count;	633	{
		634	create_respipe ();
878	}	635	}
879		636
880	/*****************************************************************************/	637	/*****************************************************************************/
881	/* work around various missing functions */
882		638
883	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
884	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
885	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
886
887	/*
888	* make our pread/pwrite safe against themselves, but not against
889	* normal read/write by using a mutex. slows down execution a lot,
890	* but that's your problem, not mine.
891	*/
892	static mutex_t preadwritelock = X_MUTEX_INIT;
893
894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895	{
896	ssize_t res;
897	off_t ooffset;
898
899	X_LOCK (preadwritelock);
900	ooffset = lseek (fd, 0, SEEK_CUR);
901	lseek (fd, offset, SEEK_SET);
902	res = read (fd, buf, count);
903	lseek (fd, ooffset, SEEK_SET);
904	X_UNLOCK (preadwritelock);
905
906	return res;
907	}
908
909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
910	{
911	ssize_t res;
912	off_t ooffset;
913
914	X_LOCK (preadwritelock);
915	ooffset = lseek (fd, 0, SEEK_CUR);
916	lseek (fd, offset, SEEK_SET);
917	res = write (fd, buf, count);
918	lseek (fd, offset, SEEK_SET);
919	X_UNLOCK (preadwritelock);
920
921	return res;
922	}
923	#endif
924
925	#ifndef HAVE_FUTIMES
926
927	# define utimes(path,times) aio_utimes (path, times)
928	# define futimes(fd,times) aio_futimes (fd, times)
929
930	int aio_utimes (const char *filename, const struct timeval times[2])
931	{
932	if (times)
933	{
934	struct utimbuf buf;
935
936	buf.actime = times[0].tv_sec;
937	buf.modtime = times[1].tv_sec;
938
939	return utime (filename, &buf);
940	}
941	else
942	return utime (filename, 0);
943	}
944
945	int aio_futimes (int fd, const struct timeval tv[2])
946	{
947	errno = ENOSYS;
948	return -1;
949	}
950
951	#endif
952
953	#if !HAVE_FDATASYNC
954	# define fdatasync fsync
955	#endif
956
957	#if !HAVE_READAHEAD
958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
959
960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
961	{
962	size_t todo = count;
963	dBUF;
964
965	while (todo > 0)
966	{
967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968
969	pread (fd, aio_buf, len, offset);
970	offset += len;
971	todo -= len;
972	}
973
974	errno = 0;
975	return count;
976	}
977
978	#endif
979
980	#if !HAVE_READDIR_R
981	# define readdir_r aio_readdir_r
982
983	static mutex_t readdirlock = X_MUTEX_INIT;
984
985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
986	{
987	X_DIRENT *e;
988	int errorno;
989
990	X_LOCK (readdirlock);
991
992	e = readdir (dirp);
993	errorno = errno;
994
995	if (e)
996	{
997	*res = ent;
998	strcpy (ent->d_name, e->d_name);
999	}
1000	else
1001	*res = 0;
1002
1003	X_UNLOCK (readdirlock);
1004
1005	errno = errorno;
1006	return e ? 0 : -1;
1007	}
1008	#endif
1009
1010	/* sendfile always needs emulation */
1011	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1012	{
1013	ssize_t res;
1014
1015	if (!count)
1016	return 0;
1017
1018	#if HAVE_SENDFILE
1019	# if __linux
1020	res = sendfile (ofd, ifd, &offset, count);
1021
1022	# elif __freebsd
1023	/*
1024	* Of course, the freebsd sendfile is a dire hack with no thoughts
1025	* wasted on making it similar to other I/O functions.
1026	*/
1027	{
1028	off_t sbytes;
1029	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030
1031	if (res < 0 && sbytes)
1032	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1033	res = sbytes;
1034	}
1035
1036	# elif __hpux
1037	res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039	# elif __solaris
1040	{
1041	struct sendfilevec vec;
1042	size_t sbytes;
1043
1044	vec.sfv_fd = ifd;
1045	vec.sfv_flag = 0;
1046	vec.sfv_off = offset;
1047	vec.sfv_len = count;
1048
1049	res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051	if (res < 0 && sbytes)
1052	res = sbytes;
1053	}
1054
1055	# endif	642	#endif
1056	#else
1057	res = -1;
1058	errno = ENOSYS;
1059	#endif
1060		643
1061	if (res < 0	644	#if !_POSIX_MEMORY_PROTECTION
1062	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	645	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1063	#if __solaris	646	# define PROT_NONE 0
1064	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	647	# define PROT_WRITE 0
		648	# define MAP_PRIVATE 0
		649	# define MAP_SHARED 0
		650	# define MAP_FIXED 0
1065	#endif	651	#endif
1066	)
1067	)
1068	{
1069	/* emulate sendfile. this is a major pain in the ass */
1070	dBUF;
1071		652
1072	res = 0;	653	#define MMAP_MAGIC PERL_MAGIC_ext
1073		654
1074	while (count)	655	static int
1075	{	656	mmap_free (pTHX_ SV *sv, MAGIC *mg)
1076	ssize_t cnt;	657	{
1077		658	int old_errno = errno;
1078	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;
1079		661
1080	if (cnt <= 0)	662	mg->mg_obj = 0; /* just in case */
1081	{
1082	if (cnt && !res) res = -1;
1083	break;
1084	}
1085		663
1086	cnt = write (ofd, aio_buf, cnt);	664	SvREADONLY_off (sv);
1087		665
1088	if (cnt <= 0)	666	if (SvPVX (sv) != mg->mg_ptr)
1089	{	667	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1090	if (cnt && !res) res = -1;
1091	break;
1092	}
1093		668
1094	offset += cnt;	669	SvCUR_set (sv, 0);
1095	res += cnt;	670	SvPVX (sv) = 0;
1096	count -= cnt;	671	SvOK_off (sv);
1097	}
1098	}
1099		672
1100	return res;	673	return 0;
1101	}	674	}
1102		675
1103	/* read a full directory */	676	static MGVTBL mmap_vtbl = {
1104	static void scandir_ (aio_req req, worker *self)	677	0, 0, 0, 0, mmap_free
1105	{	678	};
1106	DIR *dirp;
1107	union
1108	{
1109	X_DIRENT d;
1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111	} *u;
1112	X_DIRENT *entp;
1113	char *name, *names;
1114	int memlen = 4096;
1115	int memofs = 0;
1116	int res = 0;
1117
1118	X_LOCK (wrklock);
1119	self->dirp = dirp = opendir (req->ptr1);
1120	self->dbuf = u = malloc (sizeof (*u));
1121	req->flags |= FLAG_PTR2_FREE;
1122	req->ptr2 = names = malloc (memlen);
1123	X_UNLOCK (wrklock);
1124
1125	if (dirp && u && names)
1126	for (;;)
1127	{
1128	errno = 0;
1129	readdir_r (dirp, &u->d, &entp);
1130
1131	if (!entp)
1132	break;
1133
1134	name = entp->d_name;
1135
1136	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137	{
1138	int len = strlen (name) + 1;
1139
1140	res++;
1141
1142	while (memofs + len > memlen)
1143	{
1144	memlen *= 2;
1145	X_LOCK (wrklock);
1146	req->ptr2 = names = realloc (names, memlen);
1147	X_UNLOCK (wrklock);
1148
1149	if (!names)
1150	break;
1151	}
1152
1153	memcpy (names + memofs, name, len);
1154	memofs += len;
1155	}
1156	}
1157
1158	if (errno)
1159	res = -1;
1160
1161	req->result = res;
1162	}
1163		679
1164	/*****************************************************************************/	680	/*****************************************************************************/
1165		681
1166	X_THREAD_PROC (aio_proc)	682	static SV *
		683	get_cb (SV *cb_sv)
1167	{	684	{
1168	{//D	685	SvGETMAGIC (cb_sv);
1169	aio_req req;	686	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1170	struct timespec ts;
1171	worker *self = (worker *)thr_arg;
1172
1173	/* try to distribute timeouts somewhat randomly */
1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176	for (;;)
1177	{
1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180	X_LOCK (reqlock);
1181
1182	for (;;)
1183	{
1184	self->req = req = reqq_shift (&req_queue);
1185
1186	if (req)
1187	break;
1188
1189	++idle;
1190
1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192	== ETIMEDOUT)
1193	{
1194	if (idle > max_idle)
1195	{
1196	--idle;
1197	X_UNLOCK (reqlock);
1198	X_LOCK (wrklock);
1199	--started;
1200	X_UNLOCK (wrklock);
1201	goto quit;
1202	}
1203
1204	/* we are allowed to idle, so do so without any timeout */
1205	X_COND_WAIT (reqwait, reqlock);
1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207	}
1208
1209	--idle;
1210	}
1211
1212	--nready;
1213
1214	X_UNLOCK (reqlock);
1215
1216	errno = 0; /* strictly unnecessary */
1217
1218	if (!(req->flags & FLAG_CANCELLED))
1219	switch (req->type)
1220	{
1221	case REQ_READ: req->result = req->offs >= 0
1222	? pread (req->int1, req->ptr1, req->size, req->offs)
1223	: read (req->int1, req->ptr1, req->size); break;
1224	case REQ_WRITE: req->result = req->offs >= 0
1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226	: write (req->int1, req->ptr1, req->size); break;
1227
1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243	case REQ_CLOSE: req->result = close (req->int1); break;
1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
1255	case REQ_READDIR: scandir_ (req, self); break;
1256
1257	case REQ_BUSY:
1258	#ifdef _WIN32
1259	Sleep (req->nv1 * 1000.);
1260	#else
1261	{
1262	struct timeval tv;
1263
1264	tv.tv_sec = req->nv1;
1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267	req->result = select (0, 0, 0, 0, &tv);
1268	}
1269	#endif
1270	break;
1271
1272	case REQ_UTIME:
1273	case REQ_FUTIME:
1274	{
1275	struct timeval tv[2];
1276	struct timeval *times;
1277
1278	if (req->nv1 != -1. || req->nv2 != -1.)
1279	{
1280	tv[0].tv_sec = req->nv1;
1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282	tv[1].tv_sec = req->nv2;
1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285	times = tv;
1286	}
1287	else
1288	times = 0;
1289
1290
1291	req->result = req->type == REQ_FUTIME
1292	? futimes (req->int1, times)
1293	: utimes (req->ptr1, times);
1294	}
1295
1296	case REQ_GROUP:
1297	case REQ_NOP:
1298	break;
1299
1300	case REQ_QUIT:
1301	goto quit;
1302
1303	default:
1304	req->result = -1;
1305	break;
1306	}
1307
1308	req->errorno = errno;
1309
1310	X_LOCK (reslock);
1311
1312	++npending;
1313
1314	if (!reqq_push (&res_queue, req))
1315	{
1316	/* write a dummy byte to the pipe so fh becomes ready */
1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319	/* optionally signal the main thread asynchronously */
1320	if (main_sig)
1321	pthread_kill (main_tid, main_sig);
1322	}
1323
1324	self->req = 0;
1325	worker_clear (self);
1326
1327	X_UNLOCK (reslock);
1328	}
1329
1330	quit:
1331	X_LOCK (wrklock);
1332	worker_free (self);
1333	X_UNLOCK (wrklock);
1334
1335	return 0;
1336	}//D
1337	}
1338
1339	/*****************************************************************************/
1340
1341	static void atfork_prepare (void)
1342	{
1343	X_LOCK (wrklock);
1344	X_LOCK (reqlock);
1345	X_LOCK (reslock);
1346	#if !HAVE_PREADWRITE
1347	X_LOCK (preadwritelock);
1348	#endif
1349	#if !HAVE_READDIR_R
1350	X_LOCK (readdirlock);
1351	#endif
1352	}
1353
1354	static void atfork_parent (void)
1355	{
1356	#if !HAVE_READDIR_R
1357	X_UNLOCK (readdirlock);
1358	#endif
1359	#if !HAVE_PREADWRITE
1360	X_UNLOCK (preadwritelock);
1361	#endif
1362	X_UNLOCK (reslock);
1363	X_UNLOCK (reqlock);
1364	X_UNLOCK (wrklock);
1365	}
1366
1367	static void atfork_child (void)
1368	{
1369	aio_req prv;
1370
1371	while (prv = reqq_shift (&req_queue))
1372	req_destroy (prv);
1373
1374	while (prv = reqq_shift (&res_queue))
1375	req_destroy (prv);
1376
1377	while (wrk_first.next != &wrk_first)
1378	{
1379	worker *wrk = wrk_first.next;
1380
1381	if (wrk->req)
1382	req_destroy (wrk->req);
1383
1384	worker_clear (wrk);
1385	worker_free (wrk);
1386	}
1387
1388	started = 0;
1389	idle = 0;
1390	nreqs = 0;
1391	nready = 0;
1392	npending = 0;
1393
1394	create_respipe ();
1395
1396	atfork_parent ();
1397	}	687	}
1398		688
1399	#define dREQ \	689	#define dREQ \
		690	SV *cb_cv; \
1400	aio_req req; \	691	aio_req req; \
1401	int req_pri = next_pri; \	692	int req_pri = next_pri; \
1402	next_pri = DEFAULT_PRI + PRI_BIAS; \	693	next_pri = EIO_PRI_DEFAULT; \
1403	\	694	\
1404	if (SvOK (callback) && !SvROK (callback)) \	695	cb_cv = get_cb (callback); \
1405	croak ("callback must be undef or of reference type"); \
1406	\	696	\
1407	Newz (0, req, 1, aio_cb); \	697	Newz (0, req, 1, eio_req); \
1408	if (!req) \	698	if (!req) \
1409	croak ("out of memory during aio_req allocation"); \	699	croak ("out of memory during eio_req allocation"); \
1410	\	700	\
1411	req->callback = newSVsv (callback); \	701	req->callback = SvREFCNT_inc (cb_cv); \
1412	req->pri = req_pri	702	req->pri = req_pri
1413		703
1414	#define REQ_SEND \	704	#define REQ_SEND \
		705	PUTBACK; \
1415	req_send (req); \	706	req_submit (req); \
		707	SPAGAIN; \
1416	\	708	\
1417	if (GIMME_V != G_VOID) \	709	if (GIMME_V != G_VOID) \
1418	XPUSHs (req_sv (req, AIO_REQ_KLASS));	710	XPUSHs (req_sv (req, aio_req_stash));
1419		711
1420	MODULE = IO::AIO PACKAGE = IO::AIO	712	MODULE = IO::AIO PACKAGE = IO::AIO
1421		713
1422	PROTOTYPES: ENABLE	714	PROTOTYPES: ENABLE
1423		715
1424	BOOT:	716	BOOT:
1425	{	717	{
1426	HV *stash = gv_stashpv ("IO::AIO", 1);	718	static const struct {
1427		719	const char *name;
1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	720	IV iv;
1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	721	} *civ, const_iv[] = {
1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	722	# define const_niv(name, value) { # name, (IV) value },
1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	723	# define const_iv(name) { # name, (IV) name },
1432	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)
1433	#ifdef _WIN32	734	#ifndef _WIN32
1434	X_MUTEX_CHECK (wrklock);	735	const_iv (S_IFIFO)
1435	X_MUTEX_CHECK (reslock);
1436	X_MUTEX_CHECK (reqlock);
1437	X_MUTEX_CHECK (reqwait);
1438	X_MUTEX_CHECK (preadwritelock);
1439	X_MUTEX_CHECK (readdirlock);
1440
1441	X_COND_CHECK (reqwait);
1442	#else
1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445	#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)
1446		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
1447	create_respipe ();	818	create_respipe ();
1448		819
1449	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);
1450	}	825	}
1451		826
1452	void	827	void
1453	max_poll_reqs (int nreqs)	828	max_poll_reqs (int nreqs)
1454	PROTOTYPE: $	829	PROTOTYPE: $
1455	CODE:	830	CODE:
1456	max_poll_reqs = nreqs;	831	eio_set_max_poll_reqs (nreqs);
1457		832
1458	void	833	void
1459	max_poll_time (double nseconds)	834	max_poll_time (double nseconds)
1460	PROTOTYPE: $	835	PROTOTYPE: $
1461	CODE:	836	CODE:
1462	max_poll_time = nseconds * AIO_TICKS;	837	eio_set_max_poll_time (nseconds);
1463		838
1464	void	839	void
1465	min_parallel (int nthreads)	840	min_parallel (int nthreads)
1466	PROTOTYPE: $	841	PROTOTYPE: $
		842	CODE:
		843	eio_set_min_parallel (nthreads);
1467		844
1468	void	845	void
1469	max_parallel (int nthreads)	846	max_parallel (int nthreads)
1470	PROTOTYPE: $	847	PROTOTYPE: $
		848	CODE:
		849	eio_set_max_parallel (nthreads);
1471		850
1472	void	851	void
1473	max_idle (int nthreads)	852	max_idle (int nthreads)
1474	PROTOTYPE: $	853	PROTOTYPE: $
1475	CODE:	854	CODE:
1476	set_max_idle (nthreads);	855	eio_set_max_idle (nthreads);
1477		856
1478	int	857	void
1479	max_outstanding (int maxreqs)	858	max_outstanding (int maxreqs)
1480	PROTOTYPE: $	859	PROTOTYPE: $
1481	CODE:	860	CODE:
1482	RETVAL = max_outstanding;
1483	max_outstanding = maxreqs;	861	max_outstanding = maxreqs;
1484	OUTPUT:
1485	RETVAL
1486		862
1487	void	863	void
1488	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)
1489	PROTOTYPE: $$$;$
1490	PPCODE:	865	PPCODE:
1491	{	866	{
1492	dREQ;	867	dREQ;
1493		868
1494	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
1495	req->sv1 = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
1496	req->ptr1 = SvPVbyte_nolen (req->sv1);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->int1 = flags;	872	req->int1 = flags;
1498	req->mode = mode;	873	req->int2 = mode;
1499		874
1500	REQ_SEND;	875	REQ_SEND;
1501	}	876	}
1502		877
1503	void	878	void
1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)	879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $;$
1506	ALIAS:	880	ALIAS:
1507	aio_close = REQ_CLOSE
1508	aio_fsync = REQ_FSYNC	881	aio_fsync = EIO_FSYNC
1509	aio_fdatasync = REQ_FDATASYNC	882	aio_fdatasync = EIO_FDATASYNC
1510	PPCODE:	883	PPCODE:
1511	{	884	{
		885	int fd = s_fileno_croak (fh, 0);
1512	dREQ;	886	dREQ;
1513		887
1514	req->type = ix;	888	req->type = ix;
1515	req->sv1 = newSVsv (fh);	889	req->sv1 = newSVsv (fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	890	req->int1 = fd;
		891
		892	REQ_SEND (req);
		893	}
		894
		895	void
		896	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		897	PPCODE:
		898	{
		899	int fd = s_fileno_croak (fh, 0);
		900	dREQ;
		901
		902	req->type = EIO_SYNC_FILE_RANGE;
		903	req->sv1 = newSVsv (fh);
		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;
1517		936
1518	REQ_SEND (req);	937	REQ_SEND (req);
1519	}	938	}
1520		939
1521	void	940	void
1522	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)
1523	ALIAS:	942	ALIAS:
1524	aio_read = REQ_READ	943	aio_read = EIO_READ
1525	aio_write = REQ_WRITE	944	aio_write = EIO_WRITE
1526	PROTOTYPE: $$$$$;$
1527	PPCODE:	945	PPCODE:
1528	{	946	{
1529	STRLEN svlen;	947	STRLEN svlen;
		948	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530	char *svptr = SvPVbyte (data, svlen);	949	char *svptr = SvPVbyte (data, svlen);
1531	UV len = SvUV (length);	950	UV len = SvUV (length);
1532		951
1533	SvUPGRADE (data, SVt_PV);
1534	SvPOK_on (data);
1535
1536	if (dataoffset < 0)	952	if (dataoffset < 0)
1537	dataoffset += svlen;	953	dataoffset += svlen;
1538		954
1539	if (dataoffset < 0 || dataoffset > svlen)	955	if (dataoffset < 0 || dataoffset > svlen)
1540	croak ("dataoffset outside of data scalar");	956	croak ("dataoffset outside of data scalar");
1541		957
1542	if (ix == REQ_WRITE)	958	if (ix == EIO_WRITE)
1543	{	959	{
1544	/* write: check length and adjust. */	960	/* write: check length and adjust. */
1545	if (!SvOK (length) || len + dataoffset > svlen)	961	if (!SvOK (length) || len + dataoffset > svlen)
1546	len = svlen - dataoffset;	962	len = svlen - dataoffset;
1547	}	963	}
1548	else	964	else
1549	{	965	{
1550	/* read: grow scalar as necessary */	966	/* read: check type and grow scalar as necessary */
		967	SvUPGRADE (data, SVt_PV);
1551	svptr = SvGROW (data, len + dataoffset + 1);	968	svptr = SvGROW (data, len + dataoffset + 1);
1552	}	969	}
1553		970
1554	if (len < 0)
1555	croak ("length must not be negative");
1556
1557	{	971	{
1558	dREQ;	972	dREQ;
1559		973
1560	req->type = ix;	974	req->type = ix;
1561	req->sv1 = newSVsv (fh);	975	req->sv1 = newSVsv (fh);
1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	976	req->int1 = fd;
1563	: IoOFP (sv_2io (fh)));
1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	977	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565	req->size = len;	978	req->size = len;
1566	req->sv2 = SvREFCNT_inc (data);	979	req->sv2 = SvREFCNT_inc (data);
1567	req->ptr1 = (char *)svptr + dataoffset;	980	req->ptr2 = (char *)svptr + dataoffset;
1568	req->stroffset = dataoffset;	981	req->stroffset = dataoffset;
1569		982
1570	if (!SvREADONLY (data))	983	if (!SvREADONLY (data))
1571	{	984	{
1572	SvREADONLY_on (data);	985	SvREADONLY_on (data);
…		…
1577	}	990	}
1578	}	991	}
1579		992
1580	void	993	void
1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	994	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1582	PROTOTYPE: $$;$
1583	PPCODE:	995	PPCODE:
1584	{	996	{
1585	SV *data;	997	SV *data;
1586	dREQ;	998	dREQ;
1587		999
1588	data = newSV (NAME_MAX);
1589	SvPOK_on (data);
1590
1591	req->type = REQ_READLINK;	1000	req->type = EIO_READLINK;
1592	req->sv1 = newSVsv (path);	1001	req->sv1 = newSVsv (path);
1593	req->ptr2 = SvPVbyte_nolen (req->sv1);	1002	req->ptr1 = SvPVbyte_nolen (req->sv1);
1594	req->sv2 = data;
1595	req->ptr1 = SvPVbyte_nolen (data);
1596		1003
1597	REQ_SEND;	1004	REQ_SEND;
1598	}	1005	}
1599		1006
1600	void	1007	void
1601	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)
1602	PROTOTYPE: $$$$;$
1603	PPCODE:	1009	PPCODE:
1604	{	1010	{
		1011	int ifd = s_fileno_croak (in_fh , 0);
		1012	int ofd = s_fileno_croak (out_fh, 1);
1605	dREQ;	1013	dREQ;
1606		1014
1607	req->type = REQ_SENDFILE;	1015	req->type = EIO_SENDFILE;
1608	req->sv1 = newSVsv (out_fh);	1016	req->sv1 = newSVsv (out_fh);
1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1017	req->int1 = ofd;
1610	req->sv2 = newSVsv (in_fh);	1018	req->sv2 = newSVsv (in_fh);
1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1019	req->int2 = ifd;
1612	req->offs = SvVAL64 (in_offset);	1020	req->offs = in_offset;
1613	req->size = length;	1021	req->size = length;
1614		1022
1615	REQ_SEND;	1023	REQ_SEND;
1616	}	1024	}
1617		1025
1618	void	1026	void
1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1027	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1620	PROTOTYPE: $$$;$
1621	PPCODE:	1028	PPCODE:
1622	{	1029	{
		1030	int fd = s_fileno_croak (fh, 0);
1623	dREQ;	1031	dREQ;
1624		1032
1625	req->type = REQ_READAHEAD;	1033	req->type = EIO_READAHEAD;
1626	req->sv1 = newSVsv (fh);	1034	req->sv1 = newSVsv (fh);
1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1035	req->int1 = fd;
1628	req->offs = SvVAL64 (offset);	1036	req->offs = offset;
1629	req->size = length;	1037	req->size = length;
1630		1038
1631	REQ_SEND;	1039	REQ_SEND;
1632	}	1040	}
1633		1041
1634	void	1042	void
1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1043	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1636	ALIAS:	1044	ALIAS:
1637	aio_stat = REQ_STAT	1045	aio_stat = EIO_STAT
1638	aio_lstat = REQ_LSTAT	1046	aio_lstat = EIO_LSTAT
		1047	aio_statvfs = EIO_STATVFS
1639	PPCODE:	1048	PPCODE:
1640	{	1049	{
1641	dREQ;	1050	dREQ;
1642		1051
1643	req->ptr2 = malloc (sizeof (Stat_t));
1644	if (!req->ptr2)
1645	{
1646	req_destroy (req);
1647	croak ("out of memory during aio_stat statdata allocation");
1648	}
1649
1650	req->flags |= FLAG_PTR2_FREE;
1651	req->sv1 = newSVsv (fh_or_path);	1052	req->sv1 = newSVsv (fh_or_path);
1652		1053
1653	if (SvPOK (fh_or_path))	1054	if (SvPOK (req->sv1))
1654	{	1055	{
1655	req->type = ix;	1056	req->type = ix;
1656	req->ptr1 = SvPVbyte_nolen (req->sv1);	1057	req->ptr1 = SvPVbyte_nolen (req->sv1);
1657	}	1058	}
1658	else	1059	else
1659	{	1060	{
1660	req->type = REQ_FSTAT;	1061	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1062	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1662	}	1063	}
1663		1064
1664	REQ_SEND;	1065	REQ_SEND;
1665	}	1066	}
…		…
1672		1073
1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1074	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1075	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675	req->sv1 = newSVsv (fh_or_path);	1076	req->sv1 = newSVsv (fh_or_path);
1676		1077
1677	if (SvPOK (fh_or_path))	1078	if (SvPOK (req->sv1))
1678	{	1079	{
1679	req->type = REQ_UTIME;	1080	req->type = EIO_UTIME;
1680	req->ptr1 = SvPVbyte_nolen (req->sv1);	1081	req->ptr1 = SvPVbyte_nolen (req->sv1);
1681	}	1082	}
1682	else	1083	else
1683	{	1084	{
1684	req->type = REQ_FUTIME;	1085	req->type = EIO_FUTIME;
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1086	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686	}	1087	}
1687		1088
1688	REQ_SEND;	1089	REQ_SEND;
1689	}	1090	}
…		…
1695	dREQ;	1096	dREQ;
1696		1097
1697	req->sv1 = newSVsv (fh_or_path);	1098	req->sv1 = newSVsv (fh_or_path);
1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1099	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699		1100
1700	if (SvPOK (fh_or_path))	1101	if (SvPOK (req->sv1))
1701	{	1102	{
1702	req->type = REQ_TRUNCATE;	1103	req->type = EIO_TRUNCATE;
1703	req->ptr1 = SvPVbyte_nolen (req->sv1);	1104	req->ptr1 = SvPVbyte_nolen (req->sv1);
1704	}	1105	}
1705	else	1106	else
1706	{	1107	{
1707	req->type = REQ_FTRUNCATE;	1108	req->type = EIO_FTRUNCATE;
1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1109	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	}	1110	}
1710		1111
1711	REQ_SEND;	1112	REQ_SEND;
1712	}	1113	}
1713		1114
1714	void	1115	void
1715	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
1716	PPCODE:	1120	PPCODE:
1717	{	1121	{
1718	dREQ;	1122	dREQ;
1719		1123
1720	req->mode = mode;	1124	req->int2 = mode;
1721	req->sv1 = newSVsv (fh_or_path);	1125	req->sv1 = newSVsv (fh_or_path);
1722		1126
1723	if (SvPOK (fh_or_path))	1127	if (SvPOK (req->sv1))
1724	{	1128	{
1725	req->type = REQ_CHMOD;	1129	req->type = ix;
1726	req->ptr1 = SvPVbyte_nolen (req->sv1);	1130	req->ptr1 = SvPVbyte_nolen (req->sv1);
1727	}	1131	}
1728	else	1132	else
1729	{	1133	{
1730	req->type = REQ_FCHMOD;	1134	req->type = EIO_FCHMOD;
1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1135	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732	}	1136	}
1733		1137
1734	REQ_SEND;	1138	REQ_SEND;
1735	}	1139	}
…		…
1742		1146
1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1147	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1148	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745	req->sv1 = newSVsv (fh_or_path);	1149	req->sv1 = newSVsv (fh_or_path);
1746		1150
1747	if (SvPOK (fh_or_path))	1151	if (SvPOK (req->sv1))
1748	{	1152	{
1749	req->type = REQ_CHOWN;	1153	req->type = EIO_CHOWN;
1750	req->ptr1 = SvPVbyte_nolen (req->sv1);	1154	req->ptr1 = SvPVbyte_nolen (req->sv1);
1751	}	1155	}
1752	else	1156	else
1753	{	1157	{
1754	req->type = REQ_FCHOWN;	1158	req->type = EIO_FCHOWN;
1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1159	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756	}	1160	}
1757		1161
1758	REQ_SEND;	1162	REQ_SEND;
1759	}	1163	}
1760		1164
1761	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
1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1183	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1763	ALIAS:	1184	ALIAS:
1764	aio_unlink = REQ_UNLINK	1185	aio_unlink = EIO_UNLINK
1765	aio_rmdir = REQ_RMDIR	1186	aio_rmdir = EIO_RMDIR
1766	aio_readdir = REQ_READDIR	1187	aio_readdir = EIO_READDIR
1767	PPCODE:	1188	PPCODE:
1768	{	1189	{
1769	dREQ;	1190	dREQ;
1770		1191
1771	req->type = ix;	1192	req->type = ix;
…		…
1774		1195
1775	REQ_SEND;	1196	REQ_SEND;
1776	}	1197	}
1777		1198
1778	void	1199	void
1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1780	PPCODE:
1781	{
1782	dREQ;
1783
1784	req->type = REQ_MKDIR;
1785	req->sv1 = newSVsv (pathname);
1786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1787	req->mode = mode;
1788
1789	REQ_SEND;
1790	}
1791
1792	void
1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1200	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794	ALIAS:	1201	ALIAS:
1795	aio_link = REQ_LINK	1202	aio_link = EIO_LINK
1796	aio_symlink = REQ_SYMLINK	1203	aio_symlink = EIO_SYMLINK
1797	aio_rename = REQ_RENAME	1204	aio_rename = EIO_RENAME
1798	PPCODE:	1205	PPCODE:
1799	{	1206	{
1800	dREQ;	1207	dREQ;
1801		1208
1802	req->type = ix;	1209	req->type = ix;
1803	req->sv2 = newSVsv (oldpath);	1210	req->sv1 = newSVsv (oldpath);
		1211	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1212	req->sv2 = newSVsv (newpath);
1804	req->ptr2 = SvPVbyte_nolen (req->sv2);	1213	req->ptr2 = SvPVbyte_nolen (req->sv2);
1805	req->sv1 = newSVsv (newpath);
1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1807		1214
1808	REQ_SEND;	1215	REQ_SEND;
1809	}	1216	}
1810		1217
1811	void	1218	void
1812	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)
1813	PPCODE:	1220	PPCODE:
1814	{	1221	{
1815	dREQ;	1222	dREQ;
1816		1223
1817	req->type = REQ_MKNOD;	1224	req->type = EIO_MKNOD;
1818	req->sv1 = newSVsv (pathname);	1225	req->sv1 = newSVsv (pathname);
1819	req->ptr1 = SvPVbyte_nolen (req->sv1);	1226	req->ptr1 = SvPVbyte_nolen (req->sv1);
1820	req->mode = (mode_t)mode;	1227	req->int2 = (mode_t)mode;
1821	req->offs = dev;	1228	req->offs = dev;
1822		1229
1823	REQ_SEND;	1230	REQ_SEND;
1824	}	1231	}
1825		1232
1826	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
1827	aio_busy (double delay, SV *callback=&PL_sv_undef)	1308	aio_busy (double delay, SV *callback=&PL_sv_undef)
1828	PPCODE:	1309	PPCODE:
1829	{	1310	{
1830	dREQ;	1311	dREQ;
1831		1312
1832	req->type = REQ_BUSY;	1313	req->type = EIO_BUSY;
1833	req->nv1 = delay < 0. ? 0. : delay;	1314	req->nv1 = delay < 0. ? 0. : delay;
1834		1315
1835	REQ_SEND;	1316	REQ_SEND;
1836	}	1317	}
1837		1318
1838	void	1319	void
1839	aio_group (SV *callback=&PL_sv_undef)	1320	aio_group (SV *callback=&PL_sv_undef)
1840	PROTOTYPE: ;$
1841	PPCODE:	1321	PPCODE:
1842	{	1322	{
1843	dREQ;	1323	dREQ;
1844		1324
1845	req->type = REQ_GROUP;	1325	req->type = EIO_GROUP;
1846		1326
1847	req_send (req);	1327	req_submit (req);
1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1328	XPUSHs (req_sv (req, aio_grp_stash));
1849	}	1329	}
1850		1330
1851	void	1331	void
1852	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
1853	PPCODE:	1336	PPCODE:
1854	{	1337	{
1855	dREQ;	1338	dREQ;
1856		1339
1857	req->type = REQ_NOP;	1340	req->type = ix;
1858		1341
1859	REQ_SEND;	1342	REQ_SEND;
1860	}	1343	}
1861		1344
1862	int	1345	int
1863	aioreq_pri (int pri = 0)	1346	aioreq_pri (int pri = 0)
1864	PROTOTYPE: ;$
1865	CODE:	1347	CODE:
1866	RETVAL = next_pri - PRI_BIAS;	1348	RETVAL = next_pri;
1867	if (items > 0)	1349	if (items > 0)
1868	{	1350	{
1869	if (pri < PRI_MIN) pri = PRI_MIN;	1351	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870	if (pri > PRI_MAX) pri = PRI_MAX;	1352	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871	next_pri = pri + PRI_BIAS;	1353	next_pri = pri;
1872	}	1354	}
1873	OUTPUT:	1355	OUTPUT:
1874	RETVAL	1356	RETVAL
1875		1357
1876	void	1358	void
1877	aioreq_nice (int nice = 0)	1359	aioreq_nice (int nice = 0)
1878	CODE:	1360	CODE:
1879	nice = next_pri - nice;	1361	nice = next_pri - nice;
1880	if (nice < PRI_MIN) nice = PRI_MIN;	1362	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881	if (nice > PRI_MAX) nice = PRI_MAX;	1363	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882	next_pri = nice + PRI_BIAS;	1364	next_pri = nice;
1883		1365
1884	void	1366	void
1885	flush ()	1367	flush ()
1886	PROTOTYPE:
1887	CODE:	1368	CODE:
1888	while (nreqs)	1369	while (eio_nreqs ())
1889	{	1370	{
1890	poll_wait ();	1371	poll_wait ();
1891	poll_cb ();	1372	poll_cb ();
1892	}	1373	}
1893		1374
1894	int	1375	int
1895	poll()	1376	poll ()
1896	PROTOTYPE:
1897	CODE:	1377	CODE:
1898	poll_wait ();	1378	poll_wait ();
1899	RETVAL = poll_cb ();	1379	RETVAL = poll_cb ();
1900	OUTPUT:	1380	OUTPUT:
1901	RETVAL	1381	RETVAL
1902		1382
1903	int	1383	int
1904	poll_fileno()	1384	poll_fileno ()
1905	PROTOTYPE:
1906	CODE:	1385	CODE:
1907	RETVAL = respipe [0];	1386	RETVAL = s_epipe_fd (&respipe);
1908	OUTPUT:	1387	OUTPUT:
1909	RETVAL	1388	RETVAL
1910		1389
1911	int	1390	int
1912	poll_cb(...)	1391	poll_cb (...)
1913	PROTOTYPE:	1392	PROTOTYPE:
1914	CODE:	1393	CODE:
1915	RETVAL = poll_cb ();	1394	RETVAL = poll_cb ();
1916	OUTPUT:	1395	OUTPUT:
1917	RETVAL	1396	RETVAL
1918		1397
1919	void	1398	void
1920	poll_wait()	1399	poll_wait ()
1921	PROTOTYPE:
1922	CODE:	1400	CODE:
1923	poll_wait ();	1401	poll_wait ();
1924		1402
1925	void
1926	setsig (int signum = SIGIO)
1927	PROTOTYPE: ;$
1928	CODE:
1929	{
1930	if (block_sig_level)
1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933	X_LOCK (reslock);
1934	main_tid = pthread_self ();
1935	main_sig = signum;
1936	X_UNLOCK (reslock);
1937
1938	if (main_sig && npending)
1939	pthread_kill (main_tid, main_sig);
1940	}
1941
1942	void
1943	aio_block (SV *cb)
1944	PROTOTYPE: &
1945	PPCODE:
1946	{
1947	int count;
1948
1949	block_sig ();
1950	PUSHMARK (SP);
1951	PUTBACK;
1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953	SPAGAIN;
1954	unblock_sig ();
1955
1956	if (SvTRUE (ERRSV))
1957	croak (0);
1958
1959	XSRETURN (count);
1960	}
1961
1962	int	1403	int
1963	nreqs()	1404	nreqs ()
1964	PROTOTYPE:
1965	CODE:	1405	CODE:
1966	RETVAL = nreqs;	1406	RETVAL = eio_nreqs ();
1967	OUTPUT:	1407	OUTPUT:
1968	RETVAL	1408	RETVAL
1969		1409
1970	int	1410	int
1971	nready()	1411	nready ()
1972	PROTOTYPE:
1973	CODE:	1412	CODE:
1974	RETVAL = get_nready ();	1413	RETVAL = eio_nready ();
1975	OUTPUT:	1414	OUTPUT:
1976	RETVAL	1415	RETVAL
1977		1416
1978	int	1417	int
1979	npending()	1418	npending ()
1980	PROTOTYPE:
1981	CODE:	1419	CODE:
1982	RETVAL = get_npending ();	1420	RETVAL = eio_npending ();
1983	OUTPUT:	1421	OUTPUT:
1984	RETVAL	1422	RETVAL
1985		1423
1986	int	1424	int
1987	nthreads()	1425	nthreads ()
1988	PROTOTYPE:
1989	CODE:	1426	CODE:
1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1427	RETVAL = eio_nthreads ();
1991	RETVAL = started;
1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993	OUTPUT:	1428	OUTPUT:
1994	RETVAL	1429	RETVAL
1995		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
1996	PROTOTYPES: DISABLE	1558	PROTOTYPES: DISABLE
1997		1559
1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1560	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999		1561
2000	void	1562	void
2001	cancel (aio_req_ornot req)	1563	cancel (aio_req_ornot req)
2002	CODE:	1564	CODE:
2003	req_cancel (req);	1565	eio_cancel (req);
2004		1566
2005	void	1567	void
2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1568	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2007	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
2008	SvREFCNT_dec (req->callback);	1578	SvREFCNT_dec (req->callback);
2009	req->callback = newSVsv (callback);	1579	req->callback = SvREFCNT_inc (cb_cv);
		1580	}
		1581	}
2010		1582
2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1583	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012		1584
2013	void	1585	void
2014	add (aio_req grp, ...)	1586	add (aio_req grp, ...)
2015	PPCODE:	1587	PPCODE:
2016	{	1588	{
2017	int i;	1589	int i;
2018	aio_req req;
2019
2020	if (main_sig && !block_sig_level)
2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022		1590
2023	if (grp->int1 == 2)	1591	if (grp->int1 == 2)
2024	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");
2025		1593
2026	for (i = 1; i < items; ++i )	1594	for (i = 1; i < items; ++i )
2027	{	1595	{
		1596	aio_req req;
		1597
2028	if (GIMME_V != G_VOID)	1598	if (GIMME_V != G_VOID)
2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1599	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030		1600
2031	req = SvAIO_REQ (ST (i));	1601	req = SvAIO_REQ (ST (i));
2032		1602
2033	if (req)	1603	if (req)
2034	{	1604	eio_grp_add (grp, req);
2035	++grp->size;
2036	req->grp = grp;
2037
2038	req->grp_prev = 0;
2039	req->grp_next = grp->grp_first;
2040
2041	if (grp->grp_first)
2042	grp->grp_first->grp_prev = req;
2043
2044	grp->grp_first = req;
2045	}
2046	}	1605	}
2047	}	1606	}
2048		1607
2049	void	1608	void
2050	cancel_subs (aio_req_ornot req)	1609	cancel_subs (aio_req_ornot req)
…		…
2059	AV *av;	1618	AV *av;
2060		1619
2061	grp->errorno = errno;	1620	grp->errorno = errno;
2062		1621
2063	av = newAV ();	1622	av = newAV ();
		1623	av_extend (av, items - 1);
2064		1624
2065	for (i = 1; i < items; ++i )	1625	for (i = 1; i < items; ++i )
2066	av_push (av, newSVsv (ST (i)));	1626	av_push (av, newSVsv (ST (i)));
2067		1627
2068	SvREFCNT_dec (grp->sv1);	1628	SvREFCNT_dec (grp->sv1);
…		…
2075	grp->errorno = errorno;	1635	grp->errorno = errorno;
2076		1636
2077	void	1637	void
2078	limit (aio_req grp, int limit)	1638	limit (aio_req grp, int limit)
2079	CODE:	1639	CODE:
2080	grp->int2 = limit;	1640	eio_grp_limit (grp, limit);
2081	aio_grp_feed (grp);
2082		1641
2083	void	1642	void
2084	feed (aio_req grp, SV *callback=&PL_sv_undef)	1643	feed (aio_req grp, SV *callback=&PL_sv_undef)
2085	CODE:	1644	CODE:
2086	{	1645	{
2087	SvREFCNT_dec (grp->sv2);	1646	SvREFCNT_dec (grp->sv2);
2088	grp->sv2 = newSVsv (callback);	1647	grp->sv2 = newSVsv (callback);
		1648	grp->feed = aio_grp_feed;
2089		1649
2090	if (grp->int2 <= 0)	1650	if (grp->int2 <= 0)
2091	grp->int2 = 2;	1651	grp->int2 = 2;
2092		1652
2093	aio_grp_feed (grp);	1653	eio_grp_limit (grp, grp->int2);
2094	}	1654	}
2095		1655

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