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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.175 by root, Wed Dec 1 04:43:12 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
18	#ifdef _WIN32	28	#ifdef _WIN32
19		29
20	# define SIGIO 0	30	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	31	# undef malloc
23	#undef free	32	# undef free
24		33
25	// perl overrides all those nice win32 functions	34	// perl overrides all those nice win32 functions
26	# undef open	35	# undef open
27	# undef read	36	# undef read
28	# undef write	37	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
56		65
57	#else	66	#else
58		67
59	# include "autoconf/config.h"
60	# include <sys/time.h>	68	# include <sys/time.h>
61	# include <sys/select.h>	69	# include <sys/select.h>
62	# include <unistd.h>	70	# include <unistd.h>
63	# include <utime.h>	71	# include <utime.h>
64	# include <signal.h>	72	# include <signal.h>
65	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
66		74
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	75	#endif
82	#endif
83		76
84	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
85	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
86		82
87	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		84
95	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
97	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
98	#else	90	#else
		91	# define VAL64 NV
99	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
100	#endif	94	#endif
101		95
102	#define dBUF \	96	/*****************************************************************************/
103	char *aio_buf; \	97
104	X_LOCK (wrklock); \	98	#if __GNUC__ >= 3
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_UNLOCK (wrklock); \	100	#else
107	if (!aio_buf) \	101	# define expect(expr,value) (expr)
108	return -1;	102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
109		108
110	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	#endif
		128	#ifndef POSIX_FADV_SEQUENTIAL
		129	# define POSIX_FADV_SEQUENTIAL 0
		130	#endif
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134	#ifndef POSIX_FADV_NOREUSE
		135	# define POSIX_FADV_NOREUSE 0
		136	#endif
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140	#ifndef POSIX_FADV_DONTNEED
		141	# define POSIX_FADV_DONTNEED 0
		142	#endif
		143
		144	#if !HAVE_POSIX_FADVISE
		145	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		146	#endif
		147
		148	#ifndef POSIX_MADV_NORMAL
		149	# define POSIX_MADV_NORMAL 0
		150	#endif
		151	#ifndef POSIX_MADV_SEQUENTIAL
		152	# define POSIX_MADV_SEQUENTIAL 0
		153	#endif
		154	#ifndef POSIX_MADV_RANDOM
		155	# define POSIX_MADV_RANDOM 0
		156	#endif
		157	#ifndef POSIX_MADV_WILLNEED
		158	# define POSIX_MADV_WILLNEED 0
		159	#endif
		160	#ifndef POSIX_MADV_DONTNEED
		161	# define POSIX_MADV_DONTNEED 0
		162	#endif
		163
		164	#if !HAVE_POSIX_MADVISE
		165	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		166	#endif
		167
		168	#ifndef PROT_NONE
		169	# define PROT_NONE 0
		170	#endif
		171	#ifndef PROT_READ
		172	# define PROT_READ 0
		173	#endif
		174	#ifndef PROT_WRITE
		175	# define PROT_READ 0
		176	#endif
		177	#ifndef PROT_EXEC
		178	# define PROT_EXEC 0
		179	#endif
		180
		181	#ifndef ST_NODEV
		182	# define ST_NODEV 0
		183	#endif
		184	#ifndef ST_NOEXEC
		185	# define ST_NOEXEC 0
		186	#endif
		187	#ifndef ST_SYNCHRONOUS
		188	# define ST_SYNCHRONOUS 0
		189	#endif
		190	#ifndef ST_MANDLOCK
		191	# define ST_MANDLOCK 0
		192	#endif
		193	#ifndef ST_WRITE
		194	# define ST_WRITE 0
		195	#endif
		196	#ifndef ST_APPEND
		197	# define ST_APPEND 0
		198	#endif
		199	#ifndef ST_IMMUTABLE
		200	# define ST_IMMUTABLE 0
		201	#endif
		202	#ifndef ST_NOATIME
		203	# define ST_NOATIME 0
		204	#endif
		205	#ifndef ST_NODIRATIME
		206	# define ST_NODIRATIME 0
		207	#endif
		208	#ifndef ST_RELATIME
		209	# define ST_RELATIME 0
		210	#endif
		211
		212	#ifndef MAP_ANONYMOUS
		213	# ifdef MAP_ANON
		214	# define MAP_ANONYMOUS MAP_ANON
		215	# else
		216	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		217	# endif
		218	#endif
		219	#ifndef MAP_HUGETLB
		220	# define MAP_HUGETLB 0
		221	#endif
		222	#ifndef MAP_LOCKED
		223	# define MAP_LOCKED 0
		224	#endif
		225	#ifndef MAP_NORESERVE
		226	# define MAP_NORESERVE 0
		227	#endif
		228	#ifndef MAP_POPULATE
		229	# define MAP_POPULATE 0
		230	#endif
		231	#ifndef MAP_NONBLOCK
		232	# define MAP_NONBLOCK 0
		233	#endif
		234
		235	#ifndef PAGESIZE
		236	# define PAGESIZE sysconf (_SC_PAGESIZE)
		237	#endif
		238
		239	static int req_invoke (eio_req *req);
		240	#define EIO_FINISH(req) req_invoke (req)
		241	static void req_destroy (eio_req *grp);
		242	#define EIO_DESTROY(req) req_destroy (req)
111		243
112	enum {	244	enum {
113	REQ_QUIT,	245	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	};	246	};
129		247
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	248	#include "libeio/eio.c"
131	#define AIO_GRP_KLASS "IO::AIO::GRP"
132		249
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;	250	typedef eio_req *aio_req;
165	typedef aio_cb *aio_req_ornot;	251	typedef eio_req *aio_req_ornot;
166		252
167	enum {	253	static SV *on_next_submit;
168	PRI_MIN = -4,	254	static int next_pri = EIO_PRI_DEFAULT;
169	PRI_MAX = 4,	255	static int max_outstanding;
170		256
171	DEFAULT_PRI = 0,	257	static s_epipe respipe;
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175		258
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);	259	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	260	static void req_cancel (aio_req req);
376		261
		262	static void want_poll (void)
		263	{
		264	/* write a dummy byte to the pipe so fh becomes ready */
		265	s_epipe_signal (&respipe);
		266	}
		267
		268	static void done_poll (void)
		269	{
		270	/* read any signals sent by the worker threads */
		271	s_epipe_drain (&respipe);
		272	}
		273
377	/* must be called at most once */	274	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	275	static SV *req_sv (aio_req req, HV *stash)
379	{	276	{
380	if (!req->self)	277	if (!req->self)
381	{	278	{
382	req->self = (SV *)newHV ();	279	req->self = (SV *)newHV ();
383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	280	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384	}	281	}
385		282
386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	283	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387	}	284	}
388		285
389	static aio_req SvAIO_REQ (SV *sv)	286	static aio_req SvAIO_REQ (SV *sv)
390	{	287	{
391	MAGIC *mg;	288	MAGIC *mg;
392		289
393	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	290	if (!SvROK (sv)
		291	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		292	&& SvSTASH (SvRV (sv)) != aio_req_stash
		293	&& !sv_derived_from (sv, "IO::AIO::REQ")))
394	croak ("object of class " AIO_REQ_KLASS " expected");	294	croak ("object of class IO::AIO::REQ expected");
395		295
396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	296	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397		297
398	return mg ? (aio_req)mg->mg_ptr : 0;	298	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	299	}
400		300
401	static void aio_grp_feed (aio_req grp)	301	static void aio_grp_feed (aio_req grp)
402	{	302	{
403	block_sig ();	303	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	304	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	305	dSP;
412		306
413	ENTER;	307	ENTER;
414	SAVETMPS;	308	SAVETMPS;
415	PUSHMARK (SP);	309	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	310	XPUSHs (req_sv (grp, aio_grp_stash));
417	PUTBACK;	311	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	312	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	313	SPAGAIN;
420	FREETMPS;	314	FREETMPS;
421	LEAVE;	315	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	}	316	}
432
433	unblock_sig ();
434	}	317	}
435		318
436	static void aio_grp_dec (aio_req grp)	319	static void req_submit (eio_req *req)
437	{	320	{
438	--grp->size;	321	eio_submit (req);
439		322
440	/* call feeder, if applicable */	323	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	324	{
446	block_sig ();	325	dSP;
		326	SV *cb = sv_2mortal (on_next_submit);
447		327
448	if (!req_invoke (grp))	328	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		329
455	req_destroy (grp);	330	PUSHMARK (SP);
456	unblock_sig ();	331	PUTBACK;
		332	call_sv (cb, G_DISCARD | G_EVAL);
457	}	333	}
458	}	334	}
459		335
460	static int req_invoke (aio_req req)	336	static int req_invoke (eio_req *req)
461	{	337	{
462	dSP;
463
464	if (req->flags & FLAG_SV2_RO_OFF)	338	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	339	SvREADONLY_off (req->sv2);
466		340
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	341	if (!EIO_CANCELLED (req) && req->callback)
468	{	342	{
		343	dSP;
		344	static SV *sv_result_cache; /* caches the result integer SV */
		345	SV *sv_result;
		346
469	ENTER;	347	ENTER;
470	SAVETMPS;	348	SAVETMPS;
471	PUSHMARK (SP);	349	PUSHMARK (SP);
472	EXTEND (SP, 1);	350	EXTEND (SP, 1);
473		351
		352	/* do not recreate the result IV from scratch each time */
		353	if (expect_true (sv_result_cache))
		354	{
		355	sv_result = sv_result_cache; sv_result_cache = 0;
		356	SvIV_set (sv_result, req->result);
		357	}
		358	else
		359	{
		360	sv_result = newSViv (req->result);
		361	SvREADONLY_on (sv_result);
		362	}
		363
474	switch (req->type)	364	switch (req->type)
475	{	365	{
476	case REQ_READDIR:	366	case EIO_READDIR:
477	{	367	{
478	SV *rv = &PL_sv_undef;	368	SV *rv = &PL_sv_undef;
479		369
480	if (req->result >= 0)	370	if (req->result >= 0)
481	{	371	{
482	int i;	372	int i;
483	char *buf = req->ptr2;	373	char *names = (char *)req->ptr2;
		374	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484	AV *av = newAV ();	375	AV *av = newAV ();
485		376
486	av_extend (av, req->result - 1);	377	av_extend (av, req->result - 1);
487		378
488	for (i = 0; i < req->result; ++i)	379	for (i = 0; i < req->result; ++i)
489	{	380	{
490	SV *sv = newSVpv (buf, 0);	381	if (req->int1 & EIO_READDIR_DENTS)
		382	{
		383	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491		384
		385	if (req->int1 & EIO_READDIR_CUSTOM2)
		386	{
		387	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		388	AV *avent = newAV ();
		389
		390	av_extend (avent, 2);
		391
		392	if (!sv_type [ent->type])
		393	{
		394	sv_type [ent->type] = newSViv (ent->type);
		395	SvREADONLY_on (sv_type [ent->type]);
		396	}
		397
		398	av_store (avent, 0, namesv);
		399	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		400	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		401
		402	av_store (av, i, newRV_noinc ((SV *)avent));
		403	}
		404	else
492	av_store (av, i, sv);	405	av_store (av, i, namesv);
		406
		407	++ent;
		408	}
		409	else
		410	{
		411	SV *name = newSVpv (names, 0);
		412	av_store (av, i, name);
493	buf += SvCUR (sv) + 1;	413	names += SvCUR (name) + 1;
		414	}
494	}	415	}
495		416
496	rv = sv_2mortal (newRV_noinc ((SV *)av));	417	rv = sv_2mortal (newRV_noinc ((SV *)av));
497	}	418	}
498		419
499	PUSHs (rv);	420	PUSHs (rv);
		421
		422	if (req->int1 & EIO_READDIR_CUSTOM1)
		423	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
500	}	424	}
501	break;	425	break;
502		426
503	case REQ_OPEN:	427	case EIO_OPEN:
504	{	428	{
505	/* convert fd to fh */	429	/* convert fd to fh */
506	SV *fh;	430	SV *fh = &PL_sv_undef;
507		431
508	PUSHs (sv_2mortal (newSViv (req->result)));	432	if (req->result >= 0)
509	PUTBACK;	433	{
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	434	GV *gv = (GV *)sv_newmortal ();
511	SPAGAIN;	435	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		436	char sym [64];
		437	int symlen;
		438
		439	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		440	gv_init (gv, aio_stash, sym, symlen, 0);
512		441
513	fh = POPs;	442	symlen = snprintf (
514	PUSHMARK (SP);	443	sym,
		444	sizeof (sym),
		445	"%s&=%d",
		446	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		447	(int)req->result
		448	);
		449
		450	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		451	fh = (SV *)gv;
		452	}
		453
515	XPUSHs (fh);	454	PUSHs (fh);
516	}	455	}
517	break;	456	break;
518		457
		458	case EIO_STATVFS:
		459	case EIO_FSTATVFS:
		460	{
		461	SV *rv = &PL_sv_undef;
		462
		463	if (req->result >= 0)
		464	{
		465	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		466	HV *hv = newHV ();
		467
		468	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		469
		470	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		471	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		472	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		473	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		474	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		475	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		476	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		477	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		478	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		479	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		480	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		481	}
		482
		483	PUSHs (rv);
		484	}
		485
		486	break;
		487
519	case REQ_GROUP:	488	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	489	req->int1 = 2; /* mark group as finished */
521		490
522	if (req->sv1)	491	if (req->sv1)
523	{	492	{
524	int i;	493	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	497	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	498	PUSHs (*av_fetch (av, i, 0));
530	}	499	}
531	break;	500	break;
532		501
533	case REQ_NOP:	502	case EIO_NOP:
534	case REQ_BUSY:	503	case EIO_BUSY:
535	break;	504	break;
536		505
537	case REQ_READLINK:	506	case EIO_READLINK:
538	if (req->result > 0)	507	if (req->result > 0)
539	{	508	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;	509	break;
545		510
546	case REQ_STAT:	511	case EIO_STAT:
547	case REQ_LSTAT:	512	case EIO_LSTAT:
548	case REQ_FSTAT:	513	case EIO_FSTAT:
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	514	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
550	PL_laststatval = req->result;	515	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);	516	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));	517	PUSHs (sv_result);
553	break;	518	break;
554		519
555	case REQ_READ:	520	case EIO_READ:
		521	{
556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	522	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557	*SvEND (req->sv2) = 0;	523	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));	524	SvPOK_only (req->sv2);
		525	SvSETMAGIC (req->sv2);
		526	PUSHs (sv_result);
		527	}
559	break;	528	break;
560		529
		530	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		531	if (req->result > 0)
		532	SvIV_set (sv_result, 0);
		533	/* FALLTHROUGH */
		534
561	default:	535	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	536	PUSHs (sv_result);
563	break;	537	break;
564	}	538	}
565		539
566	errno = req->errorno;	540	errno = req->errorno;
567		541
568	PUTBACK;	542	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	543	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	544	SPAGAIN;
		545
		546	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		547	SvREFCNT_dec (sv_result);
		548	else
		549	sv_result_cache = sv_result;
571		550
572	FREETMPS;	551	FREETMPS;
573	LEAVE;	552	LEAVE;
		553
		554	PUTBACK;
574	}	555	}
575		556
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);	557	return !!SvTRUE (ERRSV);
591	}	558	}
592		559
593	static void req_destroy (aio_req req)	560	static void req_destroy (aio_req req)
594	{	561	{
595	if (req->self)	562	if (req->self)
…		…
600		567
601	SvREFCNT_dec (req->sv1);	568	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	569	SvREFCNT_dec (req->sv2);
603	SvREFCNT_dec (req->callback);	570	SvREFCNT_dec (req->callback);
604		571
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	572	Safefree (req);
609	}	573	}
610		574
611	static void req_cancel_subs (aio_req grp)	575	static void req_cancel_subs (aio_req grp)
612	{	576	{
613	aio_req sub;	577	aio_req sub;
614		578
615	if (grp->type != REQ_GROUP)	579	if (grp->type != EIO_GROUP)
616	return;	580	return;
617		581
618	SvREFCNT_dec (grp->sv2);	582	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	583	grp->sv2 = 0;
620		584
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	585	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}	586	}
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		587
638	static void	588	static void
639	create_respipe ()	589	create_respipe (void)
640	{	590	{
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))	591	if (s_epipe_renew (&respipe))
650	#endif
651	croak ("unable to initialize result pipe");	592	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	}	593	}
675		594
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 ()	595	static void poll_wait (void)
772	{	596	{
773	fd_set rfd;
774
775	while (nreqs)	597	while (eio_nreqs ())
776	{	598	{
777	int size;	599	int size;
778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	600
		601	X_LOCK (reslock);
779	size = res_queue.size;	602	size = res_queue.size;
780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	603	X_UNLOCK (reslock);
781		604
782	if (size)	605	if (size)
783	return;	606	return;
784		607
785	maybe_start_thread ();	608	etp_maybe_start_thread ();
786		609
787	FD_ZERO (&rfd);	610	s_epipe_wait (&respipe);
788	FD_SET (respipe [0], &rfd);
789
790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791	}	611	}
792	}	612	}
793		613
794	static int poll_cb ()	614	static int poll_cb (void)
795	{	615	{
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 (;;)	616	for (;;)
809	{	617	{
810	for (;;)	618	int res = eio_poll ();
811	{
812	maybe_start_thread ();
813		619
814	X_LOCK (reslock);	620	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);	621	croak (0);
849	}
850		622
851	count++;	623	if (!max_outstanding || max_outstanding > eio_nreqs ())
852	}	624	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		625
871	poll_wait ();	626	poll_wait ();
872
873	++maxreqs;
874	}	627	}
		628	}
875		629
876	unblock_sig ();	630	static void atfork_child (void)
877	return count;	631	{
		632	create_respipe ();
878	}	633	}
879		634
880	/*****************************************************************************/	635	/*****************************************************************************/
881	/* work around various missing functions */
882		636
883	#if !HAVE_PREADWRITE	637	#if !_POSIX_MAPPED_FILES
884	# define pread aio_pread	638	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
885	# define pwrite aio_pwrite	639	# define munmap(addr,length) (errno = ENOSYS, -1)
886		640	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
887	/*	641	# define PROT_NONE 0
888	* make our pread/pwrite safe against themselves, but not against	642	# define PROT_WRITE 0
889	* normal read/write by using a mutex. slows down execution a lot,	643	# define MAP_PRIVATE 0
890	* but that's your problem, not mine.	644	# define MAP_SHARED 0
891	*/	645	# define MAP_FIXED 0
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	646	#endif
1056	#else
1057	res = -1;
1058	errno = ENOSYS;
1059	#endif
1060		647
1061	if (res < 0	648	#define MMAP_MAGIC PERL_MAGIC_ext
1062	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1063	#if __solaris
1064	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1065	#endif
1066	)
1067	)
1068	{
1069	/* emulate sendfile. this is a major pain in the ass */
1070	dBUF;
1071		649
1072	res = 0;	650	static int
		651	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		652	{
		653	int old_errno = errno;
		654	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		655	errno = old_errno;
1073		656
1074	while (count)	657	mg->mg_obj = 0; /* just in case */
1075	{
1076	ssize_t cnt;
1077
1078	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1079		658
1080	if (cnt <= 0)	659	SvREADONLY_off (sv);
1081	{
1082	if (cnt && !res) res = -1;
1083	break;
1084	}
1085		660
1086	cnt = write (ofd, aio_buf, cnt);	661	if (SvPVX (sv) != mg->mg_ptr)
		662	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1087		663
1088	if (cnt <= 0)	664	SvCUR_set (sv, 0);
1089	{	665	SvPVX (sv) = 0;
1090	if (cnt && !res) res = -1;	666	SvOK_off (sv);
1091	break;
1092	}
1093		667
1094	offset += cnt;
1095	res += cnt;
1096	count -= cnt;
1097	}
1098	}
1099
1100	return res;	668	return 0;
1101	}	669	}
1102		670
1103	/* read a full directory */	671	static MGVTBL mmap_vtbl = {
1104	static void scandir_ (aio_req req, worker *self)	672	0, 0, 0, 0, mmap_free
1105	{	673	};
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		674
1164	/*****************************************************************************/	675	/*****************************************************************************/
1165		676
1166	X_THREAD_PROC (aio_proc)	677	static SV *
		678	get_cb (SV *cb_sv)
1167	{	679	{
1168	{//D	680	SvGETMAGIC (cb_sv);
1169	aio_req req;	681	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	}	682	}
1398		683
1399	#define dREQ \	684	#define dREQ \
		685	SV *cb_cv; \
1400	aio_req req; \	686	aio_req req; \
1401	int req_pri = next_pri; \	687	int req_pri = next_pri; \
1402	next_pri = DEFAULT_PRI + PRI_BIAS; \	688	next_pri = EIO_PRI_DEFAULT; \
1403	\	689	\
1404	if (SvOK (callback) && !SvROK (callback)) \	690	cb_cv = get_cb (callback); \
1405	croak ("callback must be undef or of reference type"); \
1406	\	691	\
1407	Newz (0, req, 1, aio_cb); \	692	Newz (0, req, 1, eio_req); \
1408	if (!req) \	693	if (!req) \
1409	croak ("out of memory during aio_req allocation"); \	694	croak ("out of memory during eio_req allocation"); \
1410	\	695	\
1411	req->callback = newSVsv (callback); \	696	req->callback = SvREFCNT_inc (cb_cv); \
1412	req->pri = req_pri	697	req->pri = req_pri
1413		698
1414	#define REQ_SEND \	699	#define REQ_SEND \
		700	PUTBACK; \
1415	req_send (req); \	701	req_submit (req); \
		702	SPAGAIN; \
1416	\	703	\
1417	if (GIMME_V != G_VOID) \	704	if (GIMME_V != G_VOID) \
1418	XPUSHs (req_sv (req, AIO_REQ_KLASS));	705	XPUSHs (req_sv (req, aio_req_stash));
1419		706
1420	MODULE = IO::AIO PACKAGE = IO::AIO	707	MODULE = IO::AIO PACKAGE = IO::AIO
1421		708
1422	PROTOTYPES: ENABLE	709	PROTOTYPES: ENABLE
1423		710
1424	BOOT:	711	BOOT:
1425	{	712	{
1426	HV *stash = gv_stashpv ("IO::AIO", 1);	713	static const struct {
1427		714	const char *name;
1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	715	IV iv;
1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	716	} *civ, const_iv[] = {
1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	717	# define const_niv(name, value) { # name, (IV) value },
1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	718	# define const_iv(name) { # name, (IV) name },
1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	719	# define const_eio(name) { # name, (IV) EIO_ ## name },
		720	const_iv (EXDEV)
		721	const_iv (ENOSYS)
		722	const_iv (O_RDONLY)
		723	const_iv (O_WRONLY)
		724	const_iv (O_RDWR)
		725	const_iv (O_CREAT)
		726	const_iv (O_TRUNC)
		727	const_iv (O_EXCL)
		728	const_iv (O_APPEND)
1433	#ifdef _WIN32	729	#ifndef _WIN32
1434	X_MUTEX_CHECK (wrklock);	730	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	731	#endif
		732	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		733	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		734	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		735	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		736	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		737	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1446		738
		739	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		740	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		741	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		742	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		743	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		744
		745	const_iv (ST_RDONLY)
		746	const_iv (ST_NOSUID)
		747	const_iv (ST_NODEV)
		748	const_iv (ST_NOEXEC)
		749	const_iv (ST_SYNCHRONOUS)
		750	const_iv (ST_MANDLOCK)
		751	const_iv (ST_WRITE)
		752	const_iv (ST_APPEND)
		753	const_iv (ST_IMMUTABLE)
		754	const_iv (ST_NOATIME)
		755	const_iv (ST_NODIRATIME)
		756	const_iv (ST_RELATIME)
		757
		758	const_iv (PROT_NONE)
		759	const_iv (PROT_EXEC)
		760	const_iv (PROT_READ)
		761	const_iv (PROT_WRITE)
		762
		763	/*const_iv (MAP_FIXED)*/
		764	const_iv (MAP_PRIVATE)
		765	const_iv (MAP_SHARED)
		766	const_iv (MAP_ANONYMOUS)
		767
		768	/* linuxish */
		769	const_iv (MAP_HUGETLB)
		770	const_iv (MAP_LOCKED)
		771	const_iv (MAP_NORESERVE)
		772	const_iv (MAP_POPULATE)
		773	const_iv (MAP_NONBLOCK)
		774
		775	const_eio (MCL_FUTURE)
		776	const_eio (MCL_CURRENT)
		777
		778	const_eio (MS_ASYNC)
		779	const_eio (MS_INVALIDATE)
		780	const_eio (MS_SYNC)
		781
		782	const_eio (MT_MODIFY)
		783
		784	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		785	const_eio (SYNC_FILE_RANGE_WRITE)
		786	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		787
		788	const_eio (READDIR_DENTS)
		789	const_eio (READDIR_DIRS_FIRST)
		790	const_eio (READDIR_STAT_ORDER)
		791	const_eio (READDIR_FOUND_UNKNOWN)
		792
		793	const_eio (DT_UNKNOWN)
		794	const_eio (DT_FIFO)
		795	const_eio (DT_CHR)
		796	const_eio (DT_DIR)
		797	const_eio (DT_BLK)
		798	const_eio (DT_REG)
		799	const_eio (DT_LNK)
		800	const_eio (DT_SOCK)
		801	const_eio (DT_WHT)
		802	};
		803
		804	aio_stash = gv_stashpv ("IO::AIO" , 1);
		805	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		806	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		807
		808	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		809	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		810
		811	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		812
1447	create_respipe ();	813	create_respipe ();
1448		814
1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	815	if (eio_init (want_poll, done_poll) < 0)
		816	croak ("IO::AIO: unable to initialise eio library");
		817
		818	/* atfork child called in fifo order, so before eio's handler */
		819	X_THREAD_ATFORK (0, 0, atfork_child);
1450	}	820	}
1451		821
1452	void	822	void
1453	max_poll_reqs (int nreqs)	823	max_poll_reqs (int nreqs)
1454	PROTOTYPE: $	824	PROTOTYPE: $
1455	CODE:	825	CODE:
1456	max_poll_reqs = nreqs;	826	eio_set_max_poll_reqs (nreqs);
1457		827
1458	void	828	void
1459	max_poll_time (double nseconds)	829	max_poll_time (double nseconds)
1460	PROTOTYPE: $	830	PROTOTYPE: $
1461	CODE:	831	CODE:
1462	max_poll_time = nseconds * AIO_TICKS;	832	eio_set_max_poll_time (nseconds);
1463		833
1464	void	834	void
1465	min_parallel (int nthreads)	835	min_parallel (int nthreads)
1466	PROTOTYPE: $	836	PROTOTYPE: $
		837	CODE:
		838	eio_set_min_parallel (nthreads);
1467		839
1468	void	840	void
1469	max_parallel (int nthreads)	841	max_parallel (int nthreads)
1470	PROTOTYPE: $	842	PROTOTYPE: $
		843	CODE:
		844	eio_set_max_parallel (nthreads);
1471		845
1472	void	846	void
1473	max_idle (int nthreads)	847	max_idle (int nthreads)
1474	PROTOTYPE: $	848	PROTOTYPE: $
1475	CODE:	849	CODE:
1476	set_max_idle (nthreads);	850	eio_set_max_idle (nthreads);
1477		851
1478	int	852	void
1479	max_outstanding (int maxreqs)	853	max_outstanding (int maxreqs)
1480	PROTOTYPE: $	854	PROTOTYPE: $
1481	CODE:	855	CODE:
1482	RETVAL = max_outstanding;
1483	max_outstanding = maxreqs;	856	max_outstanding = maxreqs;
1484	OUTPUT:
1485	RETVAL
1486		857
1487	void	858	void
1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	859	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1489	PROTOTYPE: $$$;$
1490	PPCODE:	860	PPCODE:
1491	{	861	{
1492	dREQ;	862	dREQ;
1493		863
1494	req->type = REQ_OPEN;	864	req->type = EIO_OPEN;
1495	req->sv1 = newSVsv (pathname);	865	req->sv1 = newSVsv (pathname);
1496	req->ptr1 = SvPVbyte_nolen (req->sv1);	866	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->int1 = flags;	867	req->int1 = flags;
1498	req->mode = mode;	868	req->int2 = mode;
1499		869
1500	REQ_SEND;	870	REQ_SEND;
1501	}	871	}
1502		872
1503	void	873	void
1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)	874	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $;$
1506	ALIAS:	875	ALIAS:
1507	aio_close = REQ_CLOSE
1508	aio_fsync = REQ_FSYNC	876	aio_fsync = EIO_FSYNC
1509	aio_fdatasync = REQ_FDATASYNC	877	aio_fdatasync = EIO_FDATASYNC
1510	PPCODE:	878	PPCODE:
1511	{	879	{
		880	int fd = s_fileno_croak (fh, 0);
1512	dREQ;	881	dREQ;
1513		882
1514	req->type = ix;	883	req->type = ix;
1515	req->sv1 = newSVsv (fh);	884	req->sv1 = newSVsv (fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	885	req->int1 = fd;
		886
		887	REQ_SEND (req);
		888	}
		889
		890	void
		891	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		892	PPCODE:
		893	{
		894	int fd = s_fileno_croak (fh, 0);
		895	dREQ;
		896
		897	req->type = EIO_SYNC_FILE_RANGE;
		898	req->sv1 = newSVsv (fh);
		899	req->int1 = fd;
		900	req->offs = offset;
		901	req->size = nbytes;
		902	req->int2 = flags;
		903
		904	REQ_SEND (req);
		905	}
		906
		907	void
		908	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		909	PPCODE:
		910	{
		911	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		912	int fd = s_fileno_croak (fh, 0);
		913	dREQ;
		914
		915	if (close_pipe < 0)
		916	{
		917	int pipefd [2];
		918
		919	if (pipe (pipefd) < 0
		920	|| close (pipefd [1]) < 0
		921	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		922	abort (); /*D*/
		923
		924	close_pipe = pipefd [0];
		925	}
		926
		927	req->type = EIO_DUP2;
		928	req->int1 = close_pipe;
		929	req->sv2 = newSVsv (fh);
		930	req->int2 = fd;
1517		931
1518	REQ_SEND (req);	932	REQ_SEND (req);
1519	}	933	}
1520		934
1521	void	935	void
1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	936	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1523	ALIAS:	937	ALIAS:
1524	aio_read = REQ_READ	938	aio_read = EIO_READ
1525	aio_write = REQ_WRITE	939	aio_write = EIO_WRITE
1526	PROTOTYPE: $$$$$;$
1527	PPCODE:	940	PPCODE:
1528	{	941	{
1529	STRLEN svlen;	942	STRLEN svlen;
		943	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530	char *svptr = SvPVbyte (data, svlen);	944	char *svptr = SvPVbyte (data, svlen);
1531	UV len = SvUV (length);	945	UV len = SvUV (length);
1532		946
1533	SvUPGRADE (data, SVt_PV);
1534	SvPOK_on (data);
1535
1536	if (dataoffset < 0)	947	if (dataoffset < 0)
1537	dataoffset += svlen;	948	dataoffset += svlen;
1538		949
1539	if (dataoffset < 0 || dataoffset > svlen)	950	if (dataoffset < 0 || dataoffset > svlen)
1540	croak ("dataoffset outside of data scalar");	951	croak ("dataoffset outside of data scalar");
1541		952
1542	if (ix == REQ_WRITE)	953	if (ix == EIO_WRITE)
1543	{	954	{
1544	/* write: check length and adjust. */	955	/* write: check length and adjust. */
1545	if (!SvOK (length) || len + dataoffset > svlen)	956	if (!SvOK (length) || len + dataoffset > svlen)
1546	len = svlen - dataoffset;	957	len = svlen - dataoffset;
1547	}	958	}
1548	else	959	else
1549	{	960	{
1550	/* read: grow scalar as necessary */	961	/* read: check type and grow scalar as necessary */
		962	SvUPGRADE (data, SVt_PV);
1551	svptr = SvGROW (data, len + dataoffset + 1);	963	svptr = SvGROW (data, len + dataoffset + 1);
1552	}	964	}
1553		965
1554	if (len < 0)
1555	croak ("length must not be negative");
1556
1557	{	966	{
1558	dREQ;	967	dREQ;
1559		968
1560	req->type = ix;	969	req->type = ix;
1561	req->sv1 = newSVsv (fh);	970	req->sv1 = newSVsv (fh);
1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	971	req->int1 = fd;
1563	: IoOFP (sv_2io (fh)));
1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	972	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565	req->size = len;	973	req->size = len;
1566	req->sv2 = SvREFCNT_inc (data);	974	req->sv2 = SvREFCNT_inc (data);
1567	req->ptr1 = (char *)svptr + dataoffset;	975	req->ptr2 = (char *)svptr + dataoffset;
1568	req->stroffset = dataoffset;	976	req->stroffset = dataoffset;
1569		977
1570	if (!SvREADONLY (data))	978	if (!SvREADONLY (data))
1571	{	979	{
1572	SvREADONLY_on (data);	980	SvREADONLY_on (data);
…		…
1577	}	985	}
1578	}	986	}
1579		987
1580	void	988	void
1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	989	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1582	PROTOTYPE: $$;$
1583	PPCODE:	990	PPCODE:
1584	{	991	{
1585	SV *data;	992	SV *data;
1586	dREQ;	993	dREQ;
1587		994
1588	data = newSV (NAME_MAX);
1589	SvPOK_on (data);
1590
1591	req->type = REQ_READLINK;	995	req->type = EIO_READLINK;
1592	req->sv1 = newSVsv (path);	996	req->sv1 = newSVsv (path);
1593	req->ptr2 = SvPVbyte_nolen (req->sv1);	997	req->ptr1 = SvPVbyte_nolen (req->sv1);
1594	req->sv2 = data;
1595	req->ptr1 = SvPVbyte_nolen (data);
1596		998
1597	REQ_SEND;	999	REQ_SEND;
1598	}	1000	}
1599		1001
1600	void	1002	void
1601	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1003	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1602	PROTOTYPE: $$$$;$
1603	PPCODE:	1004	PPCODE:
1604	{	1005	{
		1006	int ifd = s_fileno_croak (in_fh , 0);
		1007	int ofd = s_fileno_croak (out_fh, 1);
1605	dREQ;	1008	dREQ;
1606		1009
1607	req->type = REQ_SENDFILE;	1010	req->type = EIO_SENDFILE;
1608	req->sv1 = newSVsv (out_fh);	1011	req->sv1 = newSVsv (out_fh);
1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1012	req->int1 = ofd;
1610	req->sv2 = newSVsv (in_fh);	1013	req->sv2 = newSVsv (in_fh);
1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1014	req->int2 = ifd;
1612	req->offs = SvVAL64 (in_offset);	1015	req->offs = in_offset;
1613	req->size = length;	1016	req->size = length;
1614		1017
1615	REQ_SEND;	1018	REQ_SEND;
1616	}	1019	}
1617		1020
1618	void	1021	void
1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1022	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1620	PROTOTYPE: $$$;$
1621	PPCODE:	1023	PPCODE:
1622	{	1024	{
		1025	int fd = s_fileno_croak (fh, 0);
1623	dREQ;	1026	dREQ;
1624		1027
1625	req->type = REQ_READAHEAD;	1028	req->type = EIO_READAHEAD;
1626	req->sv1 = newSVsv (fh);	1029	req->sv1 = newSVsv (fh);
1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1030	req->int1 = fd;
1628	req->offs = SvVAL64 (offset);	1031	req->offs = offset;
1629	req->size = length;	1032	req->size = length;
1630		1033
1631	REQ_SEND;	1034	REQ_SEND;
1632	}	1035	}
1633		1036
1634	void	1037	void
1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1038	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1636	ALIAS:	1039	ALIAS:
1637	aio_stat = REQ_STAT	1040	aio_stat = EIO_STAT
1638	aio_lstat = REQ_LSTAT	1041	aio_lstat = EIO_LSTAT
		1042	aio_statvfs = EIO_STATVFS
1639	PPCODE:	1043	PPCODE:
1640	{	1044	{
1641	dREQ;	1045	dREQ;
1642		1046
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);	1047	req->sv1 = newSVsv (fh_or_path);
1652		1048
1653	if (SvPOK (fh_or_path))	1049	if (SvPOK (req->sv1))
1654	{	1050	{
1655	req->type = ix;	1051	req->type = ix;
1656	req->ptr1 = SvPVbyte_nolen (req->sv1);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1657	}	1053	}
1658	else	1054	else
1659	{	1055	{
1660	req->type = REQ_FSTAT;	1056	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1057	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1662	}	1058	}
1663		1059
1664	REQ_SEND;	1060	REQ_SEND;
1665	}	1061	}
…		…
1672		1068
1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1069	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1070	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675	req->sv1 = newSVsv (fh_or_path);	1071	req->sv1 = newSVsv (fh_or_path);
1676		1072
1677	if (SvPOK (fh_or_path))	1073	if (SvPOK (req->sv1))
1678	{	1074	{
1679	req->type = REQ_UTIME;	1075	req->type = EIO_UTIME;
1680	req->ptr1 = SvPVbyte_nolen (req->sv1);	1076	req->ptr1 = SvPVbyte_nolen (req->sv1);
1681	}	1077	}
1682	else	1078	else
1683	{	1079	{
1684	req->type = REQ_FUTIME;	1080	req->type = EIO_FUTIME;
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1081	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686	}	1082	}
1687		1083
1688	REQ_SEND;	1084	REQ_SEND;
1689	}	1085	}
…		…
1695	dREQ;	1091	dREQ;
1696		1092
1697	req->sv1 = newSVsv (fh_or_path);	1093	req->sv1 = newSVsv (fh_or_path);
1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1094	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699		1095
1700	if (SvPOK (fh_or_path))	1096	if (SvPOK (req->sv1))
1701	{	1097	{
1702	req->type = REQ_TRUNCATE;	1098	req->type = EIO_TRUNCATE;
1703	req->ptr1 = SvPVbyte_nolen (req->sv1);	1099	req->ptr1 = SvPVbyte_nolen (req->sv1);
1704	}	1100	}
1705	else	1101	else
1706	{	1102	{
1707	req->type = REQ_FTRUNCATE;	1103	req->type = EIO_FTRUNCATE;
1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1104	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	}	1105	}
1710		1106
1711	REQ_SEND;	1107	REQ_SEND;
1712	}	1108	}
1713		1109
1714	void	1110	void
1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1111	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1112	ALIAS:
		1113	aio_chmod = EIO_CHMOD
		1114	aio_mkdir = EIO_MKDIR
1716	PPCODE:	1115	PPCODE:
1717	{	1116	{
1718	dREQ;	1117	dREQ;
1719		1118
1720	req->mode = mode;	1119	req->int2 = mode;
1721	req->sv1 = newSVsv (fh_or_path);	1120	req->sv1 = newSVsv (fh_or_path);
1722		1121
1723	if (SvPOK (fh_or_path))	1122	if (SvPOK (req->sv1))
1724	{	1123	{
1725	req->type = REQ_CHMOD;	1124	req->type = ix;
1726	req->ptr1 = SvPVbyte_nolen (req->sv1);	1125	req->ptr1 = SvPVbyte_nolen (req->sv1);
1727	}	1126	}
1728	else	1127	else
1729	{	1128	{
1730	req->type = REQ_FCHMOD;	1129	req->type = EIO_FCHMOD;
1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1130	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732	}	1131	}
1733		1132
1734	REQ_SEND;	1133	REQ_SEND;
1735	}	1134	}
…		…
1742		1141
1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1142	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1143	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745	req->sv1 = newSVsv (fh_or_path);	1144	req->sv1 = newSVsv (fh_or_path);
1746		1145
1747	if (SvPOK (fh_or_path))	1146	if (SvPOK (req->sv1))
1748	{	1147	{
1749	req->type = REQ_CHOWN;	1148	req->type = EIO_CHOWN;
1750	req->ptr1 = SvPVbyte_nolen (req->sv1);	1149	req->ptr1 = SvPVbyte_nolen (req->sv1);
1751	}	1150	}
1752	else	1151	else
1753	{	1152	{
1754	req->type = REQ_FCHOWN;	1153	req->type = EIO_FCHOWN;
1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1154	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756	}	1155	}
1757		1156
1758	REQ_SEND;	1157	REQ_SEND;
1759	}	1158	}
1760		1159
1761	void	1160	void
		1161	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1162	PPCODE:
		1163	{
		1164	dREQ;
		1165
		1166	req->type = EIO_READDIR;
		1167	req->sv1 = newSVsv (pathname);
		1168	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1169	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1170
		1171	if (flags & EIO_READDIR_DENTS)
		1172	req->int1 |= EIO_READDIR_CUSTOM2;
		1173
		1174	REQ_SEND;
		1175	}
		1176
		1177	void
1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1178	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1763	ALIAS:	1179	ALIAS:
1764	aio_unlink = REQ_UNLINK	1180	aio_unlink = EIO_UNLINK
1765	aio_rmdir = REQ_RMDIR	1181	aio_rmdir = EIO_RMDIR
1766	aio_readdir = REQ_READDIR	1182	aio_readdir = EIO_READDIR
1767	PPCODE:	1183	PPCODE:
1768	{	1184	{
1769	dREQ;	1185	dREQ;
1770		1186
1771	req->type = ix;	1187	req->type = ix;
…		…
1774		1190
1775	REQ_SEND;	1191	REQ_SEND;
1776	}	1192	}
1777		1193
1778	void	1194	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)	1195	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794	ALIAS:	1196	ALIAS:
1795	aio_link = REQ_LINK	1197	aio_link = EIO_LINK
1796	aio_symlink = REQ_SYMLINK	1198	aio_symlink = EIO_SYMLINK
1797	aio_rename = REQ_RENAME	1199	aio_rename = EIO_RENAME
1798	PPCODE:	1200	PPCODE:
1799	{	1201	{
1800	dREQ;	1202	dREQ;
1801		1203
1802	req->type = ix;	1204	req->type = ix;
1803	req->sv2 = newSVsv (oldpath);	1205	req->sv1 = newSVsv (oldpath);
		1206	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1207	req->sv2 = newSVsv (newpath);
1804	req->ptr2 = SvPVbyte_nolen (req->sv2);	1208	req->ptr2 = SvPVbyte_nolen (req->sv2);
1805	req->sv1 = newSVsv (newpath);
1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1807		1209
1808	REQ_SEND;	1210	REQ_SEND;
1809	}	1211	}
1810		1212
1811	void	1213	void
1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1214	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1813	PPCODE:	1215	PPCODE:
1814	{	1216	{
1815	dREQ;	1217	dREQ;
1816		1218
1817	req->type = REQ_MKNOD;	1219	req->type = EIO_MKNOD;
1818	req->sv1 = newSVsv (pathname);	1220	req->sv1 = newSVsv (pathname);
1819	req->ptr1 = SvPVbyte_nolen (req->sv1);	1221	req->ptr1 = SvPVbyte_nolen (req->sv1);
1820	req->mode = (mode_t)mode;	1222	req->int2 = (mode_t)mode;
1821	req->offs = dev;	1223	req->offs = dev;
1822		1224
1823	REQ_SEND;	1225	REQ_SEND;
1824	}	1226	}
1825		1227
1826	void	1228	void
		1229	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1230	ALIAS:
		1231	aio_mtouch = EIO_MTOUCH
		1232	aio_msync = EIO_MSYNC
		1233	PPCODE:
		1234	{
		1235	STRLEN svlen;
		1236	char *svptr = SvPVbyte (data, svlen);
		1237	UV len = SvUV (length);
		1238
		1239	if (offset < 0)
		1240	offset += svlen;
		1241
		1242	if (offset < 0 || offset > svlen)
		1243	croak ("offset outside of scalar");
		1244
		1245	if (!SvOK (length) || len + offset > svlen)
		1246	len = svlen - offset;
		1247
		1248	{
		1249	dREQ;
		1250
		1251	req->type = ix;
		1252	req->sv2 = SvREFCNT_inc (data);
		1253	req->ptr2 = (char *)svptr + offset;
		1254	req->size = len;
		1255	req->int1 = flags;
		1256
		1257	REQ_SEND;
		1258	}
		1259	}
		1260
		1261	void
		1262	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1263	PPCODE:
		1264	{
		1265	STRLEN svlen;
		1266	char *svptr = SvPVbyte (data, svlen);
		1267	UV len = SvUV (length);
		1268
		1269	if (offset < 0)
		1270	offset += svlen;
		1271
		1272	if (offset < 0 || offset > svlen)
		1273	croak ("offset outside of scalar");
		1274
		1275	if (!SvOK (length) || len + offset > svlen)
		1276	len = svlen - offset;
		1277
		1278	{
		1279	dREQ;
		1280
		1281	req->type = EIO_MLOCK;
		1282	req->sv2 = SvREFCNT_inc (data);
		1283	req->ptr2 = (char *)svptr + offset;
		1284	req->size = len;
		1285
		1286	REQ_SEND;
		1287	}
		1288	}
		1289
		1290	void
		1291	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1292	PPCODE:
		1293	{
		1294	dREQ;
		1295
		1296	req->type = EIO_MLOCKALL;
		1297	req->int1 = flags;
		1298
		1299	REQ_SEND;
		1300	}
		1301
		1302	void
1827	aio_busy (double delay, SV *callback=&PL_sv_undef)	1303	aio_busy (double delay, SV *callback=&PL_sv_undef)
1828	PPCODE:	1304	PPCODE:
1829	{	1305	{
1830	dREQ;	1306	dREQ;
1831		1307
1832	req->type = REQ_BUSY;	1308	req->type = EIO_BUSY;
1833	req->nv1 = delay < 0. ? 0. : delay;	1309	req->nv1 = delay < 0. ? 0. : delay;
1834		1310
1835	REQ_SEND;	1311	REQ_SEND;
1836	}	1312	}
1837		1313
1838	void	1314	void
1839	aio_group (SV *callback=&PL_sv_undef)	1315	aio_group (SV *callback=&PL_sv_undef)
1840	PROTOTYPE: ;$
1841	PPCODE:	1316	PPCODE:
1842	{	1317	{
1843	dREQ;	1318	dREQ;
1844		1319
1845	req->type = REQ_GROUP;	1320	req->type = EIO_GROUP;
1846		1321
1847	req_send (req);	1322	req_submit (req);
1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1323	XPUSHs (req_sv (req, aio_grp_stash));
1849	}	1324	}
1850		1325
1851	void	1326	void
1852	aio_nop (SV *callback=&PL_sv_undef)	1327	aio_nop (SV *callback=&PL_sv_undef)
		1328	ALIAS:
		1329	aio_nop = EIO_NOP
		1330	aio_sync = EIO_SYNC
1853	PPCODE:	1331	PPCODE:
1854	{	1332	{
1855	dREQ;	1333	dREQ;
1856		1334
1857	req->type = REQ_NOP;	1335	req->type = ix;
1858		1336
1859	REQ_SEND;	1337	REQ_SEND;
1860	}	1338	}
1861		1339
1862	int	1340	int
1863	aioreq_pri (int pri = 0)	1341	aioreq_pri (int pri = 0)
1864	PROTOTYPE: ;$
1865	CODE:	1342	CODE:
1866	RETVAL = next_pri - PRI_BIAS;	1343	RETVAL = next_pri;
1867	if (items > 0)	1344	if (items > 0)
1868	{	1345	{
1869	if (pri < PRI_MIN) pri = PRI_MIN;	1346	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870	if (pri > PRI_MAX) pri = PRI_MAX;	1347	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871	next_pri = pri + PRI_BIAS;	1348	next_pri = pri;
1872	}	1349	}
1873	OUTPUT:	1350	OUTPUT:
1874	RETVAL	1351	RETVAL
1875		1352
1876	void	1353	void
1877	aioreq_nice (int nice = 0)	1354	aioreq_nice (int nice = 0)
1878	CODE:	1355	CODE:
1879	nice = next_pri - nice;	1356	nice = next_pri - nice;
1880	if (nice < PRI_MIN) nice = PRI_MIN;	1357	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881	if (nice > PRI_MAX) nice = PRI_MAX;	1358	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882	next_pri = nice + PRI_BIAS;	1359	next_pri = nice;
1883		1360
1884	void	1361	void
1885	flush ()	1362	flush ()
1886	PROTOTYPE:
1887	CODE:	1363	CODE:
1888	while (nreqs)	1364	while (eio_nreqs ())
1889	{	1365	{
1890	poll_wait ();	1366	poll_wait ();
1891	poll_cb ();	1367	poll_cb ();
1892	}	1368	}
1893		1369
1894	int	1370	int
1895	poll()	1371	poll ()
1896	PROTOTYPE:
1897	CODE:	1372	CODE:
1898	poll_wait ();	1373	poll_wait ();
1899	RETVAL = poll_cb ();	1374	RETVAL = poll_cb ();
1900	OUTPUT:	1375	OUTPUT:
1901	RETVAL	1376	RETVAL
1902		1377
1903	int	1378	int
1904	poll_fileno()	1379	poll_fileno ()
1905	PROTOTYPE:
1906	CODE:	1380	CODE:
1907	RETVAL = respipe [0];	1381	RETVAL = s_epipe_fd (&respipe);
1908	OUTPUT:	1382	OUTPUT:
1909	RETVAL	1383	RETVAL
1910		1384
1911	int	1385	int
1912	poll_cb(...)	1386	poll_cb (...)
1913	PROTOTYPE:	1387	PROTOTYPE:
1914	CODE:	1388	CODE:
1915	RETVAL = poll_cb ();	1389	RETVAL = poll_cb ();
1916	OUTPUT:	1390	OUTPUT:
1917	RETVAL	1391	RETVAL
1918		1392
1919	void	1393	void
1920	poll_wait()	1394	poll_wait ()
1921	PROTOTYPE:
1922	CODE:	1395	CODE:
1923	poll_wait ();	1396	poll_wait ();
1924		1397
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	1398	int
1963	nreqs()	1399	nreqs ()
1964	PROTOTYPE:
1965	CODE:	1400	CODE:
1966	RETVAL = nreqs;	1401	RETVAL = eio_nreqs ();
1967	OUTPUT:	1402	OUTPUT:
1968	RETVAL	1403	RETVAL
1969		1404
1970	int	1405	int
1971	nready()	1406	nready ()
1972	PROTOTYPE:
1973	CODE:	1407	CODE:
1974	RETVAL = get_nready ();	1408	RETVAL = eio_nready ();
1975	OUTPUT:	1409	OUTPUT:
1976	RETVAL	1410	RETVAL
1977		1411
1978	int	1412	int
1979	npending()	1413	npending ()
1980	PROTOTYPE:
1981	CODE:	1414	CODE:
1982	RETVAL = get_npending ();	1415	RETVAL = eio_npending ();
1983	OUTPUT:	1416	OUTPUT:
1984	RETVAL	1417	RETVAL
1985		1418
1986	int	1419	int
1987	nthreads()	1420	nthreads ()
1988	PROTOTYPE:
1989	CODE:	1421	CODE:
1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1422	RETVAL = eio_nthreads ();
1991	RETVAL = started;
1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993	OUTPUT:	1423	OUTPUT:
1994	RETVAL	1424	RETVAL
1995		1425
		1426	int
		1427	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1428	CODE:
		1429	RETVAL = posix_fadvise (fh, offset, length, advice);
		1430	OUTPUT:
		1431	RETVAL
		1432
		1433	ssize_t
		1434	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1435	CODE:
		1436	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1437	OUTPUT:
		1438	RETVAL
		1439
		1440	void
		1441	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1442	PPCODE:
		1443	sv_unmagic (scalar, MMAP_MAGIC);
		1444	{
		1445	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1446	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1447	if (addr == (void *)-1)
		1448	XSRETURN_NO;
		1449
		1450	sv_force_normal (scalar);
		1451
		1452	/* we store the length in mg_obj, as namlen is I32 :/ */
		1453	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1454	->mg_obj = (SV *)length;
		1455
		1456	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1457
		1458	if (!(prot & PROT_WRITE))
		1459	SvREADONLY_on (scalar);
		1460
		1461	if (SvLEN (scalar))
		1462	Safefree (SvPVX (scalar));
		1463
		1464	SvPVX (scalar) = (char *)addr;
		1465	SvCUR_set (scalar, length);
		1466	SvLEN_set (scalar, 0);
		1467	SvPOK_only (scalar);
		1468
		1469	XSRETURN_YES;
		1470	}
		1471
		1472	void
		1473	munmap (SV *scalar)
		1474	CODE:
		1475	sv_unmagic (scalar, MMAP_MAGIC);
		1476
		1477	int
		1478	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1479	ALIAS:
		1480	mprotect = 1
		1481	CODE:
		1482	{
		1483	STRLEN svlen;
		1484	void *addr = SvPVbyte (scalar, svlen);
		1485	size_t len = SvUV (length);
		1486
		1487	if (offset < 0)
		1488	offset += svlen;
		1489
		1490	if (offset < 0 || offset > svlen)
		1491	croak ("offset outside of scalar");
		1492
		1493	if (!SvOK (length) || len + offset > svlen)
		1494	len = svlen - offset;
		1495
		1496	addr = (void *)(((intptr_t)addr) + offset);
		1497	eio_page_align (&addr, &len);
		1498
		1499	switch (ix)
		1500	{
		1501	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1502	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1503	}
		1504	}
		1505	OUTPUT:
		1506	RETVAL
		1507
		1508	int
		1509	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1510	CODE:
		1511	{
		1512	STRLEN svlen;
		1513	void *addr = SvPVbyte (scalar, svlen);
		1514	size_t len = SvUV (length);
		1515
		1516	if (offset < 0)
		1517	offset += svlen;
		1518
		1519	if (offset < 0 || offset > svlen)
		1520	croak ("offset outside of scalar");
		1521
		1522	if (!SvOK (length) || len + offset > svlen)
		1523	len = svlen - offset;
		1524
		1525	addr = (void *)(((intptr_t)addr) + offset);
		1526	eio_page_align (&addr, &len);
		1527	#if _POSIX_MEMLOCK
		1528	RETVAL = munlock (addr, len);
		1529	#else
		1530	RETVAL = ((errno = ENOSYS), -1);
		1531	#endif
		1532	}
		1533	OUTPUT:
		1534	RETVAL
		1535
		1536	int
		1537	munlockall ()
		1538	CODE:
		1539	#if _POSIX_MEMLOCK
		1540	munlockall ();
		1541	#else
		1542	RETVAL = -1;
		1543	errno = ENOSYS;
		1544	#endif
		1545	OUTPUT:
		1546	RETVAL
		1547
		1548	void _on_next_submit (SV *cb)
		1549	CODE:
		1550	SvREFCNT_dec (on_next_submit);
		1551	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1552
1996	PROTOTYPES: DISABLE	1553	PROTOTYPES: DISABLE
1997		1554
1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1555	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999		1556
2000	void	1557	void
2001	cancel (aio_req_ornot req)	1558	cancel (aio_req_ornot req)
2002	CODE:	1559	CODE:
2003	req_cancel (req);	1560	eio_cancel (req);
2004		1561
2005	void	1562	void
2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1563	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2007	CODE:	1564	PPCODE:
		1565	{
		1566	if (GIMME_V != G_VOID)
		1567	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1568
		1569	if (items > 1)
		1570	{
		1571	SV *cb_cv =get_cb (callback);
		1572
2008	SvREFCNT_dec (req->callback);	1573	SvREFCNT_dec (req->callback);
2009	req->callback = newSVsv (callback);	1574	req->callback = SvREFCNT_inc (cb_cv);
		1575	}
		1576	}
2010		1577
2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1578	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012		1579
2013	void	1580	void
2014	add (aio_req grp, ...)	1581	add (aio_req grp, ...)
2015	PPCODE:	1582	PPCODE:
2016	{	1583	{
2017	int i;	1584	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		1585
2023	if (grp->int1 == 2)	1586	if (grp->int1 == 2)
2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1587	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025		1588
2026	for (i = 1; i < items; ++i )	1589	for (i = 1; i < items; ++i )
2027	{	1590	{
		1591	aio_req req;
		1592
2028	if (GIMME_V != G_VOID)	1593	if (GIMME_V != G_VOID)
2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1594	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030		1595
2031	req = SvAIO_REQ (ST (i));	1596	req = SvAIO_REQ (ST (i));
2032		1597
2033	if (req)	1598	if (req)
2034	{	1599	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	}	1600	}
2047	}	1601	}
2048		1602
2049	void	1603	void
2050	cancel_subs (aio_req_ornot req)	1604	cancel_subs (aio_req_ornot req)
…		…
2059	AV *av;	1613	AV *av;
2060		1614
2061	grp->errorno = errno;	1615	grp->errorno = errno;
2062		1616
2063	av = newAV ();	1617	av = newAV ();
		1618	av_extend (av, items - 1);
2064		1619
2065	for (i = 1; i < items; ++i )	1620	for (i = 1; i < items; ++i )
2066	av_push (av, newSVsv (ST (i)));	1621	av_push (av, newSVsv (ST (i)));
2067		1622
2068	SvREFCNT_dec (grp->sv1);	1623	SvREFCNT_dec (grp->sv1);
…		…
2075	grp->errorno = errorno;	1630	grp->errorno = errorno;
2076		1631
2077	void	1632	void
2078	limit (aio_req grp, int limit)	1633	limit (aio_req grp, int limit)
2079	CODE:	1634	CODE:
2080	grp->int2 = limit;	1635	eio_grp_limit (grp, limit);
2081	aio_grp_feed (grp);
2082		1636
2083	void	1637	void
2084	feed (aio_req grp, SV *callback=&PL_sv_undef)	1638	feed (aio_req grp, SV *callback=&PL_sv_undef)
2085	CODE:	1639	CODE:
2086	{	1640	{
2087	SvREFCNT_dec (grp->sv2);	1641	SvREFCNT_dec (grp->sv2);
2088	grp->sv2 = newSVsv (callback);	1642	grp->sv2 = newSVsv (callback);
		1643	grp->feed = aio_grp_feed;
2089		1644
2090	if (grp->int2 <= 0)	1645	if (grp->int2 <= 0)
2091	grp->int2 = 2;	1646	grp->int2 = 2;
2092		1647
2093	aio_grp_feed (grp);	1648	eio_grp_limit (grp, grp->int2);
2094	}	1649	}
2095		1650

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