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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.110 by root, Sun Dec 2 20:54:33 2007 UTC vs.
Revision 1.171 by root, Wed Aug 4 17:16:19 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
18	#ifdef _WIN32	28	#ifdef _WIN32
19		29
20	# define SIGIO 0	30	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	31	# undef malloc
23	#undef free	32	# undef free
24		33
25	// perl overrides all those nice win32 functions	34	// perl overrides all those nice win32 functions
26	# undef open	35	# undef open
27	# undef read	36	# undef read
28	# undef write	37	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
56		65
57	#else	66	#else
58		67
59	# include "autoconf/config.h"
60	# include <sys/time.h>	68	# include <sys/time.h>
61	# include <sys/select.h>	69	# include <sys/select.h>
62	# include <unistd.h>	70	# include <unistd.h>
63	# include <utime.h>	71	# include <utime.h>
64	# include <signal.h>	72	# include <signal.h>
65	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
66		74
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	75	#endif
82	#endif
83		76
84	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
85	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
86		82
87	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		84
95	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
97	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
98	#else	90	#else
		91	# define VAL64 NV
99	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
100	#endif	94	#endif
101		95
102	static HV *stash;	96	/*****************************************************************************/
103		97
104	#define dBUF \	98	#if __GNUC__ >= 3
105	char *aio_buf; \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	100	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	101	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	102	#endif
109	if (!aio_buf) \	103
110	return -1;	104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
111		108
112	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if _XOPEN_SOURCE < 600 || NO_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef PROT_NONE
		171	# define PROT_NONE 0
		172	#endif
		173	#ifndef PROT_READ
		174	# define PROT_READ 0
		175	#endif
		176	#ifndef PROT_WRITE
		177	# define PROT_READ 0
		178	#endif
		179	#ifndef PROT_EXEC
		180	# define PROT_EXEC 0
		181	#endif
		182
		183	#ifndef ST_NODEV
		184	# define ST_NODEV 0
		185	#endif
		186	#ifndef ST_NOEXEC
		187	# define ST_NOEXEC 0
		188	#endif
		189	#ifndef ST_SYNCHRONOUS
		190	# define ST_SYNCHRONOUS 0
		191	#endif
		192	#ifndef ST_MANDLOCK
		193	# define ST_MANDLOCK 0
		194	#endif
		195	#ifndef ST_WRITE
		196	# define ST_WRITE 0
		197	#endif
		198	#ifndef ST_APPEND
		199	# define ST_APPEND 0
		200	#endif
		201	#ifndef ST_IMMUTABLE
		202	# define ST_IMMUTABLE 0
		203	#endif
		204	#ifndef ST_NOATIME
		205	# define ST_NOATIME 0
		206	#endif
		207	#ifndef ST_NODIRATIME
		208	# define ST_NODIRATIME 0
		209	#endif
		210	#ifndef ST_RELATIME
		211	# define ST_RELATIME 0
		212	#endif
		213
		214	#ifndef MCL_CURRENT
		215	# define MCL_CURRENT 0
		216	#endif
		217	#ifndef MCL_FUTURE
		218	# define MCL_FUTURE 0
		219	#endif
		220
		221	#ifndef MAP_ANONYMOUS
		222	# ifdef MAP_ANON
		223	# define MAP_ANONYMOUS MAP_ANON
		224	# else
		225	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		226	# endif
		227	#endif
		228	#ifndef MAP_HUGETLB
		229	# define MAP_HUGETLB 0
		230	#endif
		231	#ifndef MAP_LOCKED
		232	# define MAP_LOCKED 0
		233	#endif
		234	#ifndef MAP_NORESERVE
		235	# define MAP_NORESERVE 0
		236	#endif
		237	#ifndef MAP_POPULATE
		238	# define MAP_POPULATE 0
		239	#endif
		240	#ifndef MAP_NONBLOCK
		241	# define MAP_NONBLOCK 0
		242	#endif
		243
		244	#ifndef PAGESIZE
		245	# define PAGESIZE sysconf (_SC_PAGESIZE)
		246	#endif
		247
		248	static int req_invoke (eio_req *req);
		249	#define EIO_FINISH(req) req_invoke (req)
		250	static void req_destroy (eio_req *grp);
		251	#define EIO_DESTROY(req) req_destroy (req)
113		252
114	enum {	253	enum {
115	REQ_QUIT,	254	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};	255	};
131		256
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	257	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		258
135	typedef struct aio_cb
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;
140	SV *sv1, *sv2;
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;
148	int type;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152
153	unsigned char flags;
154	unsigned char pri;
155
156	SV *self; /* the perl counterpart of this request, if any */
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
158	} aio_cb;
159
160	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};
165
166	typedef aio_cb *aio_req;	259	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	260	typedef eio_req *aio_req_ornot;
168		261
169	enum {	262	static SV *on_next_submit;
170	PRI_MIN = -4,	263	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	264	static int max_outstanding;
172		265
173	DEFAULT_PRI = 0,	266	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		267
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig ()
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig ()
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready ()
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending ()
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads ()
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb ();
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	268	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	269	static void req_cancel (aio_req req);
378		270
		271	static void want_poll (void)
		272	{
		273	/* write a dummy byte to the pipe so fh becomes ready */
		274	s_epipe_signal (&respipe);
		275	}
		276
		277	static void done_poll (void)
		278	{
		279	/* read any signals sent by the worker threads */
		280	s_epipe_drain (&respipe);
		281	}
		282
379	/* must be called at most once */	283	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	284	static SV *req_sv (aio_req req, HV *stash)
381	{	285	{
382	if (!req->self)	286	if (!req->self)
383	{	287	{
384	req->self = (SV *)newHV ();	288	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	289	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	290	}
387		291
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	292	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	293	}
390		294
391	static aio_req SvAIO_REQ (SV *sv)	295	static aio_req SvAIO_REQ (SV *sv)
392	{	296	{
393	MAGIC *mg;	297	MAGIC *mg;
394		298
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	299	if (!SvROK (sv)
		300	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		301	&& SvSTASH (SvRV (sv)) != aio_req_stash
		302	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	303	croak ("object of class IO::AIO::REQ expected");
397		304
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	305	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		306
400	return mg ? (aio_req)mg->mg_ptr : 0;	307	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	308	}
402		309
403	static void aio_grp_feed (aio_req grp)	310	static void aio_grp_feed (aio_req grp)
404	{	311	{
405	block_sig ();	312	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	313	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	314	dSP;
414		315
415	ENTER;	316	ENTER;
416	SAVETMPS;	317	SAVETMPS;
417	PUSHMARK (SP);	318	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	319	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	320	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	321	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	322	SPAGAIN;
422	FREETMPS;	323	FREETMPS;
423	LEAVE;	324	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	325	}
434
435	unblock_sig ();
436	}	326	}
437		327
438	static void aio_grp_dec (aio_req grp)	328	static void req_submit (eio_req *req)
439	{	329	{
440	--grp->size;	330	eio_submit (req);
441		331
442	/* call feeder, if applicable */	332	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	333	{
448	block_sig ();	334	dSP;
		335	SV *cb = sv_2mortal (on_next_submit);
449		336
450	if (!req_invoke (grp))	337	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		338
457	req_destroy (grp);	339	PUSHMARK (SP);
458	unblock_sig ();	340	PUTBACK;
		341	call_sv (cb, G_DISCARD | G_EVAL);
459	}	342	}
460	}	343	}
461		344
462	static int req_invoke (aio_req req)	345	static int req_invoke (eio_req *req)
463	{	346	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	347	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	348	SvREADONLY_off (req->sv2);
468		349
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	350	if (!EIO_CANCELLED (req) && req->callback)
470	{	351	{
		352	dSP;
		353	static SV *sv_result_cache; /* caches the result integer SV */
		354	SV *sv_result;
		355
471	ENTER;	356	ENTER;
472	SAVETMPS;	357	SAVETMPS;
473	PUSHMARK (SP);	358	PUSHMARK (SP);
474	EXTEND (SP, 1);	359	EXTEND (SP, 1);
475		360
		361	/* do not recreate the result IV from scratch each time */
		362	if (expect_true (sv_result_cache))
		363	{
		364	sv_result = sv_result_cache; sv_result_cache = 0;
		365	SvIV_set (sv_result, req->result);
		366	}
		367	else
		368	{
		369	sv_result = newSViv (req->result);
		370	SvREADONLY_on (sv_result);
		371	}
		372
476	switch (req->type)	373	switch (req->type)
477	{	374	{
478	case REQ_READDIR:	375	case EIO_READDIR:
479	{	376	{
480	SV *rv = &PL_sv_undef;	377	SV *rv = &PL_sv_undef;
481		378
482	if (req->result >= 0)	379	if (req->result >= 0)
483	{	380	{
484	int i;	381	int i;
485	char *buf = req->ptr2;	382	char *names = (char *)req->ptr2;
		383	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	384	AV *av = newAV ();
487		385
488	av_extend (av, req->result - 1);	386	av_extend (av, req->result - 1);
489		387
490	for (i = 0; i < req->result; ++i)	388	for (i = 0; i < req->result; ++i)
491	{	389	{
492	SV *sv = newSVpv (buf, 0);	390	if (req->int1 & EIO_READDIR_DENTS)
		391	{
		392	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		393
		394	if (req->int1 & EIO_READDIR_CUSTOM2)
		395	{
		396	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		397	AV *avent = newAV ();
		398
		399	av_extend (avent, 2);
		400
		401	if (!sv_type [ent->type])
		402	{
		403	sv_type [ent->type] = newSViv (ent->type);
		404	SvREADONLY_on (sv_type [ent->type]);
		405	}
		406
		407	av_store (avent, 0, namesv);
		408	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		409	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		410
		411	av_store (av, i, newRV_noinc ((SV *)avent));
		412	}
		413	else
494	av_store (av, i, sv);	414	av_store (av, i, namesv);
		415
		416	++ent;
		417	}
		418	else
		419	{
		420	SV *name = newSVpv (names, 0);
		421	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	422	names += SvCUR (name) + 1;
		423	}
496	}	424	}
497		425
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	426	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	427	}
500		428
501	PUSHs (rv);	429	PUSHs (rv);
		430
		431	if (req->int1 & EIO_READDIR_CUSTOM1)
		432	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	433	}
503	break;	434	break;
504		435
505	case REQ_OPEN:	436	case EIO_OPEN:
506	{	437	{
507	/* convert fd to fh */	438	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	439	SV *fh = &PL_sv_undef;
509		440
510	if (req->result >= 0)	441	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	443	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	444	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	445	char sym [64];
515	int symlen;	446	int symlen;
516		447
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	448	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	449	gv_init (gv, aio_stash, sym, symlen, 0);
519		450
520	symlen = snprintf (	451	symlen = snprintf (
521	sym,	452	sym,
522	sizeof (sym),	453	sizeof (sym),
523	"%s&=%d",	454	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	455	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	456	(int)req->result
526	);	457	);
527		458
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	459	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	460	fh = (SV *)gv;
530	}	461	}
531		462
532	PUSHs (fh);	463	PUSHs (fh);
533	}	464	}
534	break;	465	break;
535		466
		467	case EIO_STATVFS:
		468	case EIO_FSTATVFS:
		469	{
		470	SV *rv = &PL_sv_undef;
		471
		472	if (req->result >= 0)
		473	{
		474	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		475	HV *hv = newHV ();
		476
		477	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		478
		479	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		480	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		481	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		482	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		483	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		484	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		485	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		486	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		487	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		488	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		489	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		490	}
		491
		492	PUSHs (rv);
		493	}
		494
		495	break;
		496
536	case REQ_GROUP:	497	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	498	req->int1 = 2; /* mark group as finished */
538		499
539	if (req->sv1)	500	if (req->sv1)
540	{	501	{
541	int i;	502	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	506	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	507	PUSHs (*av_fetch (av, i, 0));
547	}	508	}
548	break;	509	break;
549		510
550	case REQ_NOP:	511	case EIO_NOP:
551	case REQ_BUSY:	512	case EIO_BUSY:
552	break;	513	break;
553		514
554	case REQ_READLINK:	515	case EIO_READLINK:
555	if (req->result > 0)	516	if (req->result > 0)
556	{	517	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
557	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);
560	}
561	break;	518	break;
562		519
563	case REQ_STAT:	520	case EIO_STAT:
564	case REQ_LSTAT:	521	case EIO_LSTAT:
565	case REQ_FSTAT:	522	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	523	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	524	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	525	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	526	PUSHs (sv_result);
570	break;	527	break;
571		528
572	case REQ_READ:	529	case EIO_READ:
		530	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	531	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	532	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	533	SvPOK_only (req->sv2);
		534	SvSETMAGIC (req->sv2);
		535	PUSHs (sv_result);
		536	}
576	break;	537	break;
577		538
		539	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		540	if (req->result > 0)
		541	SvIV_set (sv_result, 0);
		542	/* FALLTHROUGH */
		543
578	default:	544	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	545	PUSHs (sv_result);
580	break;	546	break;
581	}	547	}
582		548
583	errno = req->errorno;	549	errno = req->errorno;
584		550
585	PUTBACK;	551	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	552	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	553	SPAGAIN;
588		554
		555	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		556	SvREFCNT_dec (sv_result);
		557	else
		558	sv_result_cache = sv_result;
		559
589	FREETMPS;	560	FREETMPS;
590	LEAVE;	561	LEAVE;
591		562
592	PUTBACK;	563	PUTBACK;
593	}	564	}
594		565
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	566	return !!SvTRUE (ERRSV);
610	}	567	}
611		568
612	static void req_destroy (aio_req req)	569	static void req_destroy (aio_req req)
613	{	570	{
614	if (req->self)	571	if (req->self)
…		…
619		576
620	SvREFCNT_dec (req->sv1);	577	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	578	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	579	SvREFCNT_dec (req->callback);
623		580
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	581	Safefree (req);
628	}	582	}
629		583
630	static void req_cancel_subs (aio_req grp)	584	static void req_cancel_subs (aio_req grp)
631	{	585	{
632	aio_req sub;	586	aio_req sub;
633		587
634	if (grp->type != REQ_GROUP)	588	if (grp->type != EIO_GROUP)
635	return;	589	return;
636		590
637	SvREFCNT_dec (grp->sv2);	591	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	592	grp->sv2 = 0;
639		593
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	594	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	595	}
643
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}
650
651	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else
654	# define TO_SOCKET(x) (x)
655	#endif
656		596
657	static void	597	static void
658	create_respipe ()	598	create_respipe (void)
659	{	599	{
660	int old_readfd = respipe [0];
661
662	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));
664
665	#ifdef _WIN32
666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667	#else
668	if (pipe (respipe))	600	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	601	croak ("IO::AIO: unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}	602	}
694		603
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread ()
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}
789
790	static void poll_wait ()	604	static void poll_wait (void)
791	{	605	{
792	fd_set rfd;
793
794	while (nreqs)	606	while (eio_nreqs ())
795	{	607	{
796	int size;	608	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	609
		610	X_LOCK (reslock);
798	size = res_queue.size;	611	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	612	X_UNLOCK (reslock);
800		613
801	if (size)	614	if (size)
802	return;	615	return;
803		616
804	maybe_start_thread ();	617	etp_maybe_start_thread ();
805		618
806	FD_ZERO (&rfd);	619	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	620	}
811	}	621	}
812		622
813	static int poll_cb ()	623	static int poll_cb (void)
814	{	624	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	625	for (;;)
828	{	626	{
829	for (;;)	627	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		628
833	X_LOCK (reslock);	629	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	630	croak (0);
868	}
869		631
870	count++;	632	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	633	return res;
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889		634
890	poll_wait ();	635	poll_wait ();
891
892	++maxreqs;
893	}	636	}
		637	}
894		638
895	unblock_sig ();	639	static void atfork_child (void)
896	return count;	640	{
		641	create_respipe ();
897	}	642	}
898		643
899	/*****************************************************************************/	644	/*****************************************************************************/
900	/* work around various missing functions */
901		645
902	#if !HAVE_PREADWRITE	646	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	647	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	648	# define munmap(addr,length) (errno = ENOSYS, -1)
905		649	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif	650	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		651
1080	if (res < 0	652	#define MMAP_MAGIC PERL_MAGIC_ext
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090		653
1091	res = 0;	654	static int
		655	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		656	{
		657	int old_errno = errno;
		658	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		659	errno = old_errno;
1092		660
1093	while (count)	661	mg->mg_obj = 0; /* just in case */
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098		662
1099	if (cnt <= 0)	663	SvREADONLY_off (sv);
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104		664
1105	cnt = write (ofd, aio_buf, cnt);	665	if (SvPVX (sv) != mg->mg_ptr)
		666	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1106		667
1107	if (cnt <= 0)	668	SvCUR_set (sv, 0);
1108	{	669	SvPVX (sv) = 0;
1109	if (cnt && !res) res = -1;	670	SvOK_off (sv);
1110	break;
1111	}
1112		671
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;	672	return 0;
1120	}	673	}
1121		674
1122	/* read a full directory */	675	static MGVTBL mmap_vtbl = {
1123	static void scandir_ (aio_req req, worker *self)	676	0, 0, 0, 0, mmap_free
1124	{	677	};
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182		678
1183	/*****************************************************************************/	679	/*****************************************************************************/
1184		680
1185	X_THREAD_PROC (aio_proc)	681	static SV *
		682	get_cb (SV *cb_sv)
1186	{	683	{
1187	{//D	684	SvGETMAGIC (cb_sv);
1188	aio_req req;	685	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1189	struct timespec ts;
1190	worker *self = (worker *)thr_arg;
1191
1192	/* try to distribute timeouts somewhat randomly */
1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195	for (;;)
1196	{
1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199	X_LOCK (reqlock);
1200
1201	for (;;)
1202	{
1203	self->req = req = reqq_shift (&req_queue);
1204
1205	if (req)
1206	break;
1207
1208	++idle;
1209
1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211	== ETIMEDOUT)
1212	{
1213	if (idle > max_idle)
1214	{
1215	--idle;
1216	X_UNLOCK (reqlock);
1217	X_LOCK (wrklock);
1218	--started;
1219	X_UNLOCK (wrklock);
1220	goto quit;
1221	}
1222
1223	/* we are allowed to idle, so do so without any timeout */
1224	X_COND_WAIT (reqwait, reqlock);
1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226	}
1227
1228	--idle;
1229	}
1230
1231	--nready;
1232
1233	X_UNLOCK (reqlock);
1234
1235	errno = 0; /* strictly unnecessary */
1236
1237	if (!(req->flags & FLAG_CANCELLED))
1238	switch (req->type)
1239	{
1240	case REQ_READ: req->result = req->offs >= 0
1241	? pread (req->int1, req->ptr1, req->size, req->offs)
1242	: read (req->int1, req->ptr1, req->size); break;
1243	case REQ_WRITE: req->result = req->offs >= 0
1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245	: write (req->int1, req->ptr1, req->size); break;
1246
1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262	case REQ_CLOSE: req->result = close (req->int1); break;
1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272	case REQ_SYNC: req->result = 0; sync (); break;
1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
1274	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1275
1276	case REQ_READDIR: scandir_ (req, self); break;
1277
1278	case REQ_BUSY:
1279	#ifdef _WIN32
1280	Sleep (req->nv1 * 1000.);
1281	#else
1282	{
1283	struct timeval tv;
1284
1285	tv.tv_sec = req->nv1;
1286	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1287
1288	req->result = select (0, 0, 0, 0, &tv);
1289	}
1290	#endif
1291	break;
1292
1293	case REQ_UTIME:
1294	case REQ_FUTIME:
1295	{
1296	struct timeval tv[2];
1297	struct timeval *times;
1298
1299	if (req->nv1 != -1. || req->nv2 != -1.)
1300	{
1301	tv[0].tv_sec = req->nv1;
1302	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1303	tv[1].tv_sec = req->nv2;
1304	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1305
1306	times = tv;
1307	}
1308	else
1309	times = 0;
1310
1311
1312	req->result = req->type == REQ_FUTIME
1313	? futimes (req->int1, times)
1314	: utimes (req->ptr1, times);
1315	}
1316
1317	case REQ_GROUP:
1318	case REQ_NOP:
1319	break;
1320
1321	case REQ_QUIT:
1322	goto quit;
1323
1324	default:
1325	req->result = -1;
1326	break;
1327	}
1328
1329	req->errorno = errno;
1330
1331	X_LOCK (reslock);
1332
1333	++npending;
1334
1335	if (!reqq_push (&res_queue, req))
1336	{
1337	/* write a dummy byte to the pipe so fh becomes ready */
1338	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1339
1340	/* optionally signal the main thread asynchronously */
1341	if (main_sig)
1342	pthread_kill (main_tid, main_sig);
1343	}
1344
1345	self->req = 0;
1346	worker_clear (self);
1347
1348	X_UNLOCK (reslock);
1349	}
1350
1351	quit:
1352	X_LOCK (wrklock);
1353	worker_free (self);
1354	X_UNLOCK (wrklock);
1355
1356	return 0;
1357	}//D
1358	}
1359
1360	/*****************************************************************************/
1361
1362	static void atfork_prepare (void)
1363	{
1364	X_LOCK (wrklock);
1365	X_LOCK (reqlock);
1366	X_LOCK (reslock);
1367	#if !HAVE_PREADWRITE
1368	X_LOCK (preadwritelock);
1369	#endif
1370	#if !HAVE_READDIR_R
1371	X_LOCK (readdirlock);
1372	#endif
1373	}
1374
1375	static void atfork_parent (void)
1376	{
1377	#if !HAVE_READDIR_R
1378	X_UNLOCK (readdirlock);
1379	#endif
1380	#if !HAVE_PREADWRITE
1381	X_UNLOCK (preadwritelock);
1382	#endif
1383	X_UNLOCK (reslock);
1384	X_UNLOCK (reqlock);
1385	X_UNLOCK (wrklock);
1386	}
1387
1388	static void atfork_child (void)
1389	{
1390	aio_req prv;
1391
1392	while (prv = reqq_shift (&req_queue))
1393	req_destroy (prv);
1394
1395	while (prv = reqq_shift (&res_queue))
1396	req_destroy (prv);
1397
1398	while (wrk_first.next != &wrk_first)
1399	{
1400	worker *wrk = wrk_first.next;
1401
1402	if (wrk->req)
1403	req_destroy (wrk->req);
1404
1405	worker_clear (wrk);
1406	worker_free (wrk);
1407	}
1408
1409	started = 0;
1410	idle = 0;
1411	nreqs = 0;
1412	nready = 0;
1413	npending = 0;
1414
1415	create_respipe ();
1416
1417	atfork_parent ();
1418	}	686	}
1419		687
1420	#define dREQ \	688	#define dREQ \
		689	SV *cb_cv; \
1421	aio_req req; \	690	aio_req req; \
1422	int req_pri = next_pri; \	691	int req_pri = next_pri; \
1423	next_pri = DEFAULT_PRI + PRI_BIAS; \	692	next_pri = EIO_PRI_DEFAULT; \
1424	\	693	\
1425	if (SvOK (callback) && !SvROK (callback)) \	694	cb_cv = get_cb (callback); \
1426	croak ("callback must be undef or of reference type"); \
1427	\	695	\
1428	Newz (0, req, 1, aio_cb); \	696	Newz (0, req, 1, eio_req); \
1429	if (!req) \	697	if (!req) \
1430	croak ("out of memory during aio_req allocation"); \	698	croak ("out of memory during eio_req allocation"); \
1431	\	699	\
1432	req->callback = newSVsv (callback); \	700	req->callback = SvREFCNT_inc (cb_cv); \
1433	req->pri = req_pri	701	req->pri = req_pri
1434		702
1435	#define REQ_SEND \	703	#define REQ_SEND \
		704	PUTBACK; \
1436	req_send (req); \	705	req_submit (req); \
		706	SPAGAIN; \
1437	\	707	\
1438	if (GIMME_V != G_VOID) \	708	if (GIMME_V != G_VOID) \
1439	XPUSHs (req_sv (req, AIO_REQ_KLASS));	709	XPUSHs (req_sv (req, aio_req_stash));
1440		710
1441	MODULE = IO::AIO PACKAGE = IO::AIO	711	MODULE = IO::AIO PACKAGE = IO::AIO
1442		712
1443	PROTOTYPES: ENABLE	713	PROTOTYPES: ENABLE
1444		714
1445	BOOT:	715	BOOT:
1446	{	716	{
1447	stash = gv_stashpv ("IO::AIO", 1);	717	static const struct {
1448		718	const char *name;
1449	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	719	IV iv;
1450	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	720	} *civ, const_iv[] = {
1451	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	721	# define const_niv(name, value) { # name, (IV) value },
1452	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	722	# define const_iv(name) { # name, (IV) name },
1453	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	723	# define const_eio(name) { # name, (IV) EIO_ ## name },
		724	const_iv (EXDEV)
		725	const_iv (ENOSYS)
		726	const_iv (O_RDONLY)
		727	const_iv (O_WRONLY)
		728	const_iv (O_RDWR)
		729	const_iv (O_CREAT)
		730	const_iv (O_TRUNC)
		731	const_iv (O_EXCL)
		732	const_iv (O_APPEND)
1454	#ifdef _WIN32	733	#ifndef _WIN32
1455	X_MUTEX_CHECK (wrklock);	734	const_iv (S_IFIFO)
1456	X_MUTEX_CHECK (reslock);
1457	X_MUTEX_CHECK (reqlock);
1458	X_MUTEX_CHECK (reqwait);
1459	X_MUTEX_CHECK (preadwritelock);
1460	X_MUTEX_CHECK (readdirlock);
1461
1462	X_COND_CHECK (reqwait);
1463	#else
1464	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1465	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1466	#endif	735	#endif
		736	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		737	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		738	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		739	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		740	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		741	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1467		742
		743	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		744	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		745	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		746	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		747	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		748
		749	const_iv (ST_RDONLY)
		750	const_iv (ST_NOSUID)
		751	const_iv (ST_NODEV)
		752	const_iv (ST_NOEXEC)
		753	const_iv (ST_SYNCHRONOUS)
		754	const_iv (ST_MANDLOCK)
		755	const_iv (ST_WRITE)
		756	const_iv (ST_APPEND)
		757	const_iv (ST_IMMUTABLE)
		758	const_iv (ST_NOATIME)
		759	const_iv (ST_NODIRATIME)
		760	const_iv (ST_RELATIME)
		761
		762	const_iv (PROT_NONE)
		763	const_iv (PROT_EXEC)
		764	const_iv (PROT_READ)
		765	const_iv (PROT_WRITE)
		766
		767	/*const_iv (MAP_FIXED)*/
		768	const_iv (MAP_PRIVATE)
		769	const_iv (MAP_SHARED)
		770	const_iv (MAP_ANONYMOUS)
		771
		772	/* linuxish */
		773	const_iv (MAP_HUGETLB)
		774	const_iv (MAP_LOCKED)
		775	const_iv (MAP_NORESERVE)
		776	const_iv (MAP_POPULATE)
		777	const_iv (MAP_NONBLOCK)
		778
		779	const_iv (MCL_FUTURE)
		780	const_iv (MCL_CURRENT)
		781
		782	const_eio (MS_ASYNC)
		783	const_eio (MS_INVALIDATE)
		784	const_eio (MS_SYNC)
		785
		786	const_eio (MT_MODIFY)
		787
		788	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		789	const_eio (SYNC_FILE_RANGE_WRITE)
		790	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		791
		792	const_eio (READDIR_DENTS)
		793	const_eio (READDIR_DIRS_FIRST)
		794	const_eio (READDIR_STAT_ORDER)
		795	const_eio (READDIR_FOUND_UNKNOWN)
		796
		797	const_eio (DT_UNKNOWN)
		798	const_eio (DT_FIFO)
		799	const_eio (DT_CHR)
		800	const_eio (DT_DIR)
		801	const_eio (DT_BLK)
		802	const_eio (DT_REG)
		803	const_eio (DT_LNK)
		804	const_eio (DT_SOCK)
		805	const_eio (DT_WHT)
		806	};
		807
		808	aio_stash = gv_stashpv ("IO::AIO" , 1);
		809	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		810	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		811
		812	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		813	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		814
		815	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		816
1468	create_respipe ();	817	create_respipe ();
1469		818
1470	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	819	if (eio_init (want_poll, done_poll) < 0)
		820	croak ("IO::AIO: unable to initialise eio library");
		821
		822	/* atfork child called in fifo order, so before eio's handler */
		823	X_THREAD_ATFORK (0, 0, atfork_child);
1471	}	824	}
1472		825
1473	void	826	void
1474	max_poll_reqs (int nreqs)	827	max_poll_reqs (int nreqs)
1475	PROTOTYPE: $	828	PROTOTYPE: $
1476	CODE:	829	CODE:
1477	max_poll_reqs = nreqs;	830	eio_set_max_poll_reqs (nreqs);
1478		831
1479	void	832	void
1480	max_poll_time (double nseconds)	833	max_poll_time (double nseconds)
1481	PROTOTYPE: $	834	PROTOTYPE: $
1482	CODE:	835	CODE:
1483	max_poll_time = nseconds * AIO_TICKS;	836	eio_set_max_poll_time (nseconds);
1484		837
1485	void	838	void
1486	min_parallel (int nthreads)	839	min_parallel (int nthreads)
1487	PROTOTYPE: $	840	PROTOTYPE: $
		841	CODE:
		842	eio_set_min_parallel (nthreads);
1488		843
1489	void	844	void
1490	max_parallel (int nthreads)	845	max_parallel (int nthreads)
1491	PROTOTYPE: $	846	PROTOTYPE: $
		847	CODE:
		848	eio_set_max_parallel (nthreads);
1492		849
1493	void	850	void
1494	max_idle (int nthreads)	851	max_idle (int nthreads)
1495	PROTOTYPE: $	852	PROTOTYPE: $
1496	CODE:	853	CODE:
1497	set_max_idle (nthreads);	854	eio_set_max_idle (nthreads);
1498		855
1499	int	856	void
1500	max_outstanding (int maxreqs)	857	max_outstanding (int maxreqs)
1501	PROTOTYPE: $	858	PROTOTYPE: $
1502	CODE:	859	CODE:
1503	RETVAL = max_outstanding;
1504	max_outstanding = maxreqs;	860	max_outstanding = maxreqs;
1505	OUTPUT:
1506	RETVAL
1507		861
1508	void	862	void
1509	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	863	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1510	PROTOTYPE: $$$;$	864	PROTOTYPE: $$$;$
1511	PPCODE:	865	PPCODE:
1512	{	866	{
1513	dREQ;	867	dREQ;
1514		868
1515	req->type = REQ_OPEN;	869	req->type = EIO_OPEN;
1516	req->sv1 = newSVsv (pathname);	870	req->sv1 = newSVsv (pathname);
1517	req->ptr1 = SvPVbyte_nolen (req->sv1);	871	req->ptr1 = SvPVbyte_nolen (req->sv1);
1518	req->int1 = flags;	872	req->int1 = flags;
1519	req->mode = mode;	873	req->int2 = mode;
1520		874
1521	REQ_SEND;	875	REQ_SEND;
1522	}	876	}
1523		877
1524	void	878	void
1525	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	879	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1526	PROTOTYPE: $;$	880	PROTOTYPE: $;$
1527	ALIAS:	881	ALIAS:
1528	aio_fsync = REQ_FSYNC	882	aio_fsync = EIO_FSYNC
1529	aio_fdatasync = REQ_FDATASYNC	883	aio_fdatasync = EIO_FDATASYNC
1530	PPCODE:	884	PPCODE:
1531	{	885	{
		886	int fd = s_fileno_croak (fh, 0);
1532	dREQ;	887	dREQ;
1533		888
1534	req->type = ix;	889	req->type = ix;
1535	req->sv1 = newSVsv (fh);	890	req->sv1 = newSVsv (fh);
1536	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	891	req->int1 = fd;
1537		892
1538	REQ_SEND (req);	893	REQ_SEND (req);
1539	}	894	}
1540		895
1541	int	896	void
1542	_dup (int fd)	897	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1543	PROTOTYPE: $	898	PROTOTYPE: $$$$;$
1544	CODE:	899	PPCODE:
1545	RETVAL = dup (fd);	900	{
1546	OUTPUT:	901	int fd = s_fileno_croak (fh, 0);
1547	RETVAL	902	dREQ;
1548		903
		904	req->type = EIO_SYNC_FILE_RANGE;
		905	req->sv1 = newSVsv (fh);
		906	req->int1 = fd;
		907	req->offs = offset;
		908	req->size = nbytes;
		909	req->int2 = flags;
		910
		911	REQ_SEND (req);
		912	}
		913
1549	void	914	void
1550	_aio_close (int fd, SV *callback=&PL_sv_undef)	915	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$	916	PROTOTYPE: $;$
1552	PPCODE:	917	PPCODE:
1553	{	918	{
		919	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		920	int fd = s_fileno_croak (fh, 0);
1554	dREQ;	921	dREQ;
1555		922
		923	if (close_pipe < 0)
		924	{
		925	int pipefd [2];
		926
		927	if (pipe (pipefd) < 0
		928	|| close (pipefd [1]) < 0
		929	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		930	abort (); /*D*/
		931
		932	close_pipe = pipefd [0];
		933	}
		934
1556	req->type = REQ_CLOSE;	935	req->type = EIO_DUP2;
		936	req->int1 = close_pipe;
		937	req->sv2 = newSVsv (fh);
1557	req->int1 = fd;	938	req->int2 = fd;
1558		939
1559	REQ_SEND (req);	940	REQ_SEND (req);
1560	}	941	}
1561		942
1562	void	943	void
1563	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	944	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1564	ALIAS:	945	ALIAS:
1565	aio_read = REQ_READ	946	aio_read = EIO_READ
1566	aio_write = REQ_WRITE	947	aio_write = EIO_WRITE
1567	PROTOTYPE: $$$$$;$	948	PROTOTYPE: $$$$$;$
1568	PPCODE:	949	PPCODE:
1569	{	950	{
1570	STRLEN svlen;	951	STRLEN svlen;
		952	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1571	char *svptr = SvPVbyte (data, svlen);	953	char *svptr = SvPVbyte (data, svlen);
1572	UV len = SvUV (length);	954	UV len = SvUV (length);
1573		955
1574	SvUPGRADE (data, SVt_PV);
1575	SvPOK_on (data);
1576
1577	if (dataoffset < 0)	956	if (dataoffset < 0)
1578	dataoffset += svlen;	957	dataoffset += svlen;
1579		958
1580	if (dataoffset < 0 || dataoffset > svlen)	959	if (dataoffset < 0 || dataoffset > svlen)
1581	croak ("dataoffset outside of data scalar");	960	croak ("dataoffset outside of data scalar");
1582		961
1583	if (ix == REQ_WRITE)	962	if (ix == EIO_WRITE)
1584	{	963	{
1585	/* write: check length and adjust. */	964	/* write: check length and adjust. */
1586	if (!SvOK (length) || len + dataoffset > svlen)	965	if (!SvOK (length) || len + dataoffset > svlen)
1587	len = svlen - dataoffset;	966	len = svlen - dataoffset;
1588	}	967	}
1589	else	968	else
1590	{	969	{
1591	/* read: grow scalar as necessary */	970	/* read: check type and grow scalar as necessary */
		971	SvUPGRADE (data, SVt_PV);
1592	svptr = SvGROW (data, len + dataoffset + 1);	972	svptr = SvGROW (data, len + dataoffset + 1);
1593	}	973	}
1594		974
1595	if (len < 0)
1596	croak ("length must not be negative");
1597
1598	{	975	{
1599	dREQ;	976	dREQ;
1600		977
1601	req->type = ix;	978	req->type = ix;
1602	req->sv1 = newSVsv (fh);	979	req->sv1 = newSVsv (fh);
1603	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	980	req->int1 = fd;
1604	: IoOFP (sv_2io (fh)));
1605	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	981	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1606	req->size = len;	982	req->size = len;
1607	req->sv2 = SvREFCNT_inc (data);	983	req->sv2 = SvREFCNT_inc (data);
1608	req->ptr1 = (char *)svptr + dataoffset;	984	req->ptr2 = (char *)svptr + dataoffset;
1609	req->stroffset = dataoffset;	985	req->stroffset = dataoffset;
1610		986
1611	if (!SvREADONLY (data))	987	if (!SvREADONLY (data))
1612	{	988	{
1613	SvREADONLY_on (data);	989	SvREADONLY_on (data);
…		…
1624	PPCODE:	1000	PPCODE:
1625	{	1001	{
1626	SV *data;	1002	SV *data;
1627	dREQ;	1003	dREQ;
1628		1004
1629	data = newSV (NAME_MAX);
1630	SvPOK_on (data);
1631
1632	req->type = REQ_READLINK;	1005	req->type = EIO_READLINK;
1633	req->sv1 = newSVsv (path);	1006	req->sv1 = newSVsv (path);
1634	req->ptr2 = SvPVbyte_nolen (req->sv1);	1007	req->ptr1 = SvPVbyte_nolen (req->sv1);
1635	req->sv2 = data;
1636	req->ptr1 = SvPVbyte_nolen (data);
1637		1008
1638	REQ_SEND;	1009	REQ_SEND;
1639	}	1010	}
1640		1011
1641	void	1012	void
1642	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1013	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1643	PROTOTYPE: $$$$;$	1014	PROTOTYPE: $$$$;$
1644	PPCODE:	1015	PPCODE:
1645	{	1016	{
		1017	int ifd = s_fileno_croak (in_fh , 0);
		1018	int ofd = s_fileno_croak (out_fh, 1);
1646	dREQ;	1019	dREQ;
1647		1020
1648	req->type = REQ_SENDFILE;	1021	req->type = EIO_SENDFILE;
1649	req->sv1 = newSVsv (out_fh);	1022	req->sv1 = newSVsv (out_fh);
1650	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1023	req->int1 = ofd;
1651	req->sv2 = newSVsv (in_fh);	1024	req->sv2 = newSVsv (in_fh);
1652	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1025	req->int2 = ifd;
1653	req->offs = SvVAL64 (in_offset);	1026	req->offs = in_offset;
1654	req->size = length;	1027	req->size = length;
1655		1028
1656	REQ_SEND;	1029	REQ_SEND;
1657	}	1030	}
1658		1031
1659	void	1032	void
1660	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1033	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1661	PROTOTYPE: $$$;$	1034	PROTOTYPE: $$$;$
1662	PPCODE:	1035	PPCODE:
1663	{	1036	{
		1037	int fd = s_fileno_croak (fh, 0);
1664	dREQ;	1038	dREQ;
1665		1039
1666	req->type = REQ_READAHEAD;	1040	req->type = EIO_READAHEAD;
1667	req->sv1 = newSVsv (fh);	1041	req->sv1 = newSVsv (fh);
1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1042	req->int1 = fd;
1669	req->offs = SvVAL64 (offset);	1043	req->offs = offset;
1670	req->size = length;	1044	req->size = length;
1671		1045
1672	REQ_SEND;	1046	REQ_SEND;
1673	}	1047	}
1674		1048
1675	void	1049	void
1676	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1050	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1677	ALIAS:	1051	ALIAS:
1678	aio_stat = REQ_STAT	1052	aio_stat = EIO_STAT
1679	aio_lstat = REQ_LSTAT	1053	aio_lstat = EIO_LSTAT
		1054	aio_statvfs = EIO_STATVFS
1680	PPCODE:	1055	PPCODE:
1681	{	1056	{
1682	dREQ;	1057	dREQ;
1683		1058
1684	req->ptr2 = malloc (sizeof (Stat_t));
1685	if (!req->ptr2)
1686	{
1687	req_destroy (req);
1688	croak ("out of memory during aio_stat statdata allocation");
1689	}
1690
1691	req->flags |= FLAG_PTR2_FREE;
1692	req->sv1 = newSVsv (fh_or_path);	1059	req->sv1 = newSVsv (fh_or_path);
1693		1060
1694	if (SvPOK (fh_or_path))	1061	if (SvPOK (req->sv1))
1695	{	1062	{
1696	req->type = ix;	1063	req->type = ix;
1697	req->ptr1 = SvPVbyte_nolen (req->sv1);	1064	req->ptr1 = SvPVbyte_nolen (req->sv1);
1698	}	1065	}
1699	else	1066	else
1700	{	1067	{
1701	req->type = REQ_FSTAT;	1068	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1702	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1069	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1703	}	1070	}
1704		1071
1705	REQ_SEND;	1072	REQ_SEND;
1706	}	1073	}
…		…
1713		1080
1714	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1081	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1715	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1082	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1716	req->sv1 = newSVsv (fh_or_path);	1083	req->sv1 = newSVsv (fh_or_path);
1717		1084
1718	if (SvPOK (fh_or_path))	1085	if (SvPOK (req->sv1))
1719	{	1086	{
1720	req->type = REQ_UTIME;	1087	req->type = EIO_UTIME;
1721	req->ptr1 = SvPVbyte_nolen (req->sv1);	1088	req->ptr1 = SvPVbyte_nolen (req->sv1);
1722	}	1089	}
1723	else	1090	else
1724	{	1091	{
1725	req->type = REQ_FUTIME;	1092	req->type = EIO_FUTIME;
1726	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1093	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1727	}	1094	}
1728		1095
1729	REQ_SEND;	1096	REQ_SEND;
1730	}	1097	}
…		…
1736	dREQ;	1103	dREQ;
1737		1104
1738	req->sv1 = newSVsv (fh_or_path);	1105	req->sv1 = newSVsv (fh_or_path);
1739	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1106	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1740		1107
1741	if (SvPOK (fh_or_path))	1108	if (SvPOK (req->sv1))
1742	{	1109	{
1743	req->type = REQ_TRUNCATE;	1110	req->type = EIO_TRUNCATE;
1744	req->ptr1 = SvPVbyte_nolen (req->sv1);	1111	req->ptr1 = SvPVbyte_nolen (req->sv1);
1745	}	1112	}
1746	else	1113	else
1747	{	1114	{
1748	req->type = REQ_FTRUNCATE;	1115	req->type = EIO_FTRUNCATE;
1749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1116	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1750	}	1117	}
1751		1118
1752	REQ_SEND;	1119	REQ_SEND;
1753	}	1120	}
1754		1121
1755	void	1122	void
1756	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1123	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1124	ALIAS:
		1125	aio_chmod = EIO_CHMOD
		1126	aio_mkdir = EIO_MKDIR
1757	PPCODE:	1127	PPCODE:
1758	{	1128	{
1759	dREQ;	1129	dREQ;
1760		1130
1761	req->mode = mode;	1131	req->int2 = mode;
1762	req->sv1 = newSVsv (fh_or_path);	1132	req->sv1 = newSVsv (fh_or_path);
1763		1133
1764	if (SvPOK (fh_or_path))	1134	if (SvPOK (req->sv1))
1765	{	1135	{
1766	req->type = REQ_CHMOD;	1136	req->type = ix;
1767	req->ptr1 = SvPVbyte_nolen (req->sv1);	1137	req->ptr1 = SvPVbyte_nolen (req->sv1);
1768	}	1138	}
1769	else	1139	else
1770	{	1140	{
1771	req->type = REQ_FCHMOD;	1141	req->type = EIO_FCHMOD;
1772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1142	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1773	}	1143	}
1774		1144
1775	REQ_SEND;	1145	REQ_SEND;
1776	}	1146	}
…		…
1783		1153
1784	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1154	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1785	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1155	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1786	req->sv1 = newSVsv (fh_or_path);	1156	req->sv1 = newSVsv (fh_or_path);
1787		1157
1788	if (SvPOK (fh_or_path))	1158	if (SvPOK (req->sv1))
1789	{	1159	{
1790	req->type = REQ_CHOWN;	1160	req->type = EIO_CHOWN;
1791	req->ptr1 = SvPVbyte_nolen (req->sv1);	1161	req->ptr1 = SvPVbyte_nolen (req->sv1);
1792	}	1162	}
1793	else	1163	else
1794	{	1164	{
1795	req->type = REQ_FCHOWN;	1165	req->type = EIO_FCHOWN;
1796	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1166	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1797	}	1167	}
1798		1168
1799	REQ_SEND;	1169	REQ_SEND;
1800	}	1170	}
1801		1171
1802	void	1172	void
		1173	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1174	PPCODE:
		1175	{
		1176	dREQ;
		1177
		1178	req->type = EIO_READDIR;
		1179	req->sv1 = newSVsv (pathname);
		1180	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1181	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1182
		1183	if (flags & EIO_READDIR_DENTS)
		1184	req->int1 |= EIO_READDIR_CUSTOM2;
		1185
		1186	REQ_SEND;
		1187	}
		1188
		1189	void
1803	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1190	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1804	ALIAS:	1191	ALIAS:
1805	aio_unlink = REQ_UNLINK	1192	aio_unlink = EIO_UNLINK
1806	aio_rmdir = REQ_RMDIR	1193	aio_rmdir = EIO_RMDIR
1807	aio_readdir = REQ_READDIR	1194	aio_readdir = EIO_READDIR
1808	PPCODE:	1195	PPCODE:
1809	{	1196	{
1810	dREQ;	1197	dREQ;
1811		1198
1812	req->type = ix;	1199	req->type = ix;
…		…
1815		1202
1816	REQ_SEND;	1203	REQ_SEND;
1817	}	1204	}
1818		1205
1819	void	1206	void
1820	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1821	PPCODE:
1822	{
1823	dREQ;
1824
1825	req->type = REQ_MKDIR;
1826	req->sv1 = newSVsv (pathname);
1827	req->ptr1 = SvPVbyte_nolen (req->sv1);
1828	req->mode = mode;
1829
1830	REQ_SEND;
1831	}
1832
1833	void
1834	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1207	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1835	ALIAS:	1208	ALIAS:
1836	aio_link = REQ_LINK	1209	aio_link = EIO_LINK
1837	aio_symlink = REQ_SYMLINK	1210	aio_symlink = EIO_SYMLINK
1838	aio_rename = REQ_RENAME	1211	aio_rename = EIO_RENAME
1839	PPCODE:	1212	PPCODE:
1840	{	1213	{
1841	dREQ;	1214	dREQ;
1842		1215
1843	req->type = ix;	1216	req->type = ix;
1844	req->sv2 = newSVsv (oldpath);	1217	req->sv1 = newSVsv (oldpath);
		1218	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1219	req->sv2 = newSVsv (newpath);
1845	req->ptr2 = SvPVbyte_nolen (req->sv2);	1220	req->ptr2 = SvPVbyte_nolen (req->sv2);
1846	req->sv1 = newSVsv (newpath);
1847	req->ptr1 = SvPVbyte_nolen (req->sv1);
1848		1221
1849	REQ_SEND;	1222	REQ_SEND;
1850	}	1223	}
1851		1224
1852	void	1225	void
1853	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1226	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1854	PPCODE:	1227	PPCODE:
1855	{	1228	{
1856	dREQ;	1229	dREQ;
1857		1230
1858	req->type = REQ_MKNOD;	1231	req->type = EIO_MKNOD;
1859	req->sv1 = newSVsv (pathname);	1232	req->sv1 = newSVsv (pathname);
1860	req->ptr1 = SvPVbyte_nolen (req->sv1);	1233	req->ptr1 = SvPVbyte_nolen (req->sv1);
1861	req->mode = (mode_t)mode;	1234	req->int2 = (mode_t)mode;
1862	req->offs = dev;	1235	req->offs = dev;
1863		1236
1864	REQ_SEND;	1237	REQ_SEND;
1865	}	1238	}
1866		1239
1867	void	1240	void
		1241	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1242	ALIAS:
		1243	aio_mtouch = EIO_MTOUCH
		1244	aio_msync = EIO_MSYNC
		1245	PROTOTYPE: $$$$;$
		1246	PPCODE:
		1247	{
		1248	STRLEN svlen;
		1249	UV len = SvUV (length);
		1250	char *svptr = SvPVbyte (data, svlen);
		1251
		1252	if (offset < 0)
		1253	offset += svlen;
		1254
		1255	if (offset < 0 || offset > svlen)
		1256	croak ("offset outside of scalar");
		1257
		1258	if (!SvOK (length) || len + offset > svlen)
		1259	len = svlen - offset;
		1260
		1261	{
		1262	dREQ;
		1263
		1264	req->type = ix;
		1265	req->size = len;
		1266	req->sv2 = SvREFCNT_inc (data);
		1267	req->ptr2 = (char *)svptr + offset;
		1268	req->int1 = flags;
		1269
		1270	REQ_SEND;
		1271	}
		1272	}
		1273
		1274	void
1868	aio_busy (double delay, SV *callback=&PL_sv_undef)	1275	aio_busy (double delay, SV *callback=&PL_sv_undef)
1869	PPCODE:	1276	PPCODE:
1870	{	1277	{
1871	dREQ;	1278	dREQ;
1872		1279
1873	req->type = REQ_BUSY;	1280	req->type = EIO_BUSY;
1874	req->nv1 = delay < 0. ? 0. : delay;	1281	req->nv1 = delay < 0. ? 0. : delay;
1875		1282
1876	REQ_SEND;	1283	REQ_SEND;
1877	}	1284	}
1878		1285
…		…
1881	PROTOTYPE: ;$	1288	PROTOTYPE: ;$
1882	PPCODE:	1289	PPCODE:
1883	{	1290	{
1884	dREQ;	1291	dREQ;
1885		1292
1886	req->type = REQ_GROUP;	1293	req->type = EIO_GROUP;
1887		1294
1888	req_send (req);	1295	req_submit (req);
1889	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1296	XPUSHs (req_sv (req, aio_grp_stash));
1890	}	1297	}
1891		1298
1892	void	1299	void
1893	aio_nop (SV *callback=&PL_sv_undef)	1300	aio_nop (SV *callback=&PL_sv_undef)
1894	ALIAS:	1301	ALIAS:
1895	aio_nop = REQ_NOP	1302	aio_nop = EIO_NOP
1896	aio_sync = REQ_SYNC	1303	aio_sync = EIO_SYNC
1897	PPCODE:	1304	PPCODE:
1898	{	1305	{
1899	dREQ;	1306	dREQ;
1900		1307
1901	req->type = ix;	1308	req->type = ix;
…		…
1905		1312
1906	int	1313	int
1907	aioreq_pri (int pri = 0)	1314	aioreq_pri (int pri = 0)
1908	PROTOTYPE: ;$	1315	PROTOTYPE: ;$
1909	CODE:	1316	CODE:
1910	RETVAL = next_pri - PRI_BIAS;	1317	RETVAL = next_pri;
1911	if (items > 0)	1318	if (items > 0)
1912	{	1319	{
1913	if (pri < PRI_MIN) pri = PRI_MIN;	1320	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1914	if (pri > PRI_MAX) pri = PRI_MAX;	1321	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1915	next_pri = pri + PRI_BIAS;	1322	next_pri = pri;
1916	}	1323	}
1917	OUTPUT:	1324	OUTPUT:
1918	RETVAL	1325	RETVAL
1919		1326
1920	void	1327	void
1921	aioreq_nice (int nice = 0)	1328	aioreq_nice (int nice = 0)
1922	CODE:	1329	CODE:
1923	nice = next_pri - nice;	1330	nice = next_pri - nice;
1924	if (nice < PRI_MIN) nice = PRI_MIN;	1331	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1925	if (nice > PRI_MAX) nice = PRI_MAX;	1332	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1926	next_pri = nice + PRI_BIAS;	1333	next_pri = nice;
1927		1334
1928	void	1335	void
1929	flush ()	1336	flush ()
1930	PROTOTYPE:	1337	PROTOTYPE:
1931	CODE:	1338	CODE:
1932	while (nreqs)	1339	while (eio_nreqs ())
1933	{	1340	{
1934	poll_wait ();	1341	poll_wait ();
1935	poll_cb ();	1342	poll_cb ();
1936	}	1343	}
1937		1344
…		…
1946		1353
1947	int	1354	int
1948	poll_fileno()	1355	poll_fileno()
1949	PROTOTYPE:	1356	PROTOTYPE:
1950	CODE:	1357	CODE:
1951	RETVAL = respipe [0];	1358	RETVAL = s_epipe_fd (&respipe);
1952	OUTPUT:	1359	OUTPUT:
1953	RETVAL	1360	RETVAL
1954		1361
1955	int	1362	int
1956	poll_cb(...)	1363	poll_cb(...)
…		…
1964	poll_wait()	1371	poll_wait()
1965	PROTOTYPE:	1372	PROTOTYPE:
1966	CODE:	1373	CODE:
1967	poll_wait ();	1374	poll_wait ();
1968		1375
1969	void
1970	setsig (int signum = SIGIO)
1971	PROTOTYPE: ;$
1972	CODE:
1973	{
1974	if (block_sig_level)
1975	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1976
1977	X_LOCK (reslock);
1978	main_tid = pthread_self ();
1979	main_sig = signum;
1980	X_UNLOCK (reslock);
1981
1982	if (main_sig && npending)
1983	pthread_kill (main_tid, main_sig);
1984	}
1985
1986	void
1987	aio_block (SV *cb)
1988	PROTOTYPE: &
1989	PPCODE:
1990	{
1991	int count;
1992
1993	block_sig ();
1994	PUSHMARK (SP);
1995	PUTBACK;
1996	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1997	SPAGAIN;
1998	unblock_sig ();
1999
2000	if (SvTRUE (ERRSV))
2001	croak (0);
2002
2003	XSRETURN (count);
2004	}
2005
2006	int	1376	int
2007	nreqs()	1377	nreqs()
2008	PROTOTYPE:	1378	PROTOTYPE:
2009	CODE:	1379	CODE:
2010	RETVAL = nreqs;	1380	RETVAL = eio_nreqs ();
2011	OUTPUT:	1381	OUTPUT:
2012	RETVAL	1382	RETVAL
2013		1383
2014	int	1384	int
2015	nready()	1385	nready()
2016	PROTOTYPE:	1386	PROTOTYPE:
2017	CODE:	1387	CODE:
2018	RETVAL = get_nready ();	1388	RETVAL = eio_nready ();
2019	OUTPUT:	1389	OUTPUT:
2020	RETVAL	1390	RETVAL
2021		1391
2022	int	1392	int
2023	npending()	1393	npending()
2024	PROTOTYPE:	1394	PROTOTYPE:
2025	CODE:	1395	CODE:
2026	RETVAL = get_npending ();	1396	RETVAL = eio_npending ();
2027	OUTPUT:	1397	OUTPUT:
2028	RETVAL	1398	RETVAL
2029		1399
2030	int	1400	int
2031	nthreads()	1401	nthreads()
2032	PROTOTYPE:	1402	PROTOTYPE:
2033	CODE:	1403	CODE:
2034	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1404	RETVAL = eio_nthreads ();
2035	RETVAL = started;
2036	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2037	OUTPUT:	1405	OUTPUT:
2038	RETVAL	1406	RETVAL
2039		1407
		1408	int
		1409	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1410	PROTOTYPE: $$$$
		1411	CODE:
		1412	RETVAL = posix_fadvise (fh, offset, length, advice);
		1413	OUTPUT:
		1414	RETVAL
		1415
		1416	ssize_t
		1417	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1418	PROTOTYPE: $$$$
		1419	CODE:
		1420	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1421	OUTPUT:
		1422	RETVAL
		1423
		1424	void
		1425	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1426	PROTOTYPE: $$$$$;$
		1427	PPCODE:
		1428	sv_unmagic (scalar, MMAP_MAGIC);
		1429	{
		1430	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1431	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1432	if (addr == (void *)-1)
		1433	XSRETURN_NO;
		1434
		1435	sv_force_normal (scalar);
		1436
		1437	/* we store the length in mg_obj, as namlen is I32 :/ */
		1438	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1439	->mg_obj = (SV *)length;
		1440
		1441	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1442
		1443	if (!(prot & PROT_WRITE))
		1444	SvREADONLY_on (scalar);
		1445
		1446	if (SvLEN (scalar))
		1447	Safefree (SvPVX (scalar));
		1448
		1449	SvPVX (scalar) = (char *)addr;
		1450	SvCUR_set (scalar, length);
		1451	SvLEN_set (scalar, 0);
		1452	SvPOK_only (scalar);
		1453
		1454	XSRETURN_YES;
		1455	}
		1456
		1457	void
		1458	munmap (SV *scalar)
		1459	PROTOTYPE: $
		1460	CODE:
		1461	sv_unmagic (scalar, MMAP_MAGIC);
		1462
		1463	int
		1464	madvise (SV *scalar, off_t offset, off_t length, IV advice_or_prot)
		1465	ALIAS:
		1466	mprotect = 1
		1467	PROTOTYPE: $$$$
		1468	CODE:
		1469	{
		1470	STRLEN cur;
		1471	char *addr = SvPVbyte (scalar, cur);
		1472
		1473	if (offset > cur)
		1474	RETVAL = errno = EFAULT;
		1475	else
		1476	{
		1477	if (!SvOK (ST (2)))
		1478	length = cur - offset;
		1479
		1480	if (offset + length > cur)
		1481	RETVAL = errno = EFAULT;
		1482	else
		1483	switch (ix)
		1484	{
		1485	case 0: RETVAL = posix_madvise (addr + offset, length, advice_or_prot); break;
		1486	case 1: RETVAL = mprotect (addr + offset, length, advice_or_prot); break;
		1487	}
		1488	}
		1489	}
		1490	OUTPUT:
		1491	RETVAL
		1492
		1493	int
		1494	mlockall (int flags)
		1495	PROTOTYPE: $
		1496	CODE:
		1497	#if _POSIX_MEMLOCK
		1498	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1499	extern int mallopt (int, int);
		1500	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1501	#endif
		1502	mlockall (flags);
		1503	#else
		1504	RETVAL = -1;
		1505	errno = ENOSYS;
		1506	#endif
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlockall ()
		1512	PROTOTYPE:
		1513	CODE:
		1514	#if _POSIX_MEMLOCK
		1515	munlockall ();
		1516	#else
		1517	RETVAL = -1;
		1518	errno = ENOSYS;
		1519	#endif
		1520	OUTPUT:
		1521	RETVAL
		1522
		1523	void _on_next_submit (SV *cb)
		1524	CODE:
		1525	SvREFCNT_dec (on_next_submit);
		1526	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1527
2040	PROTOTYPES: DISABLE	1528	PROTOTYPES: DISABLE
2041		1529
2042	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1530	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2043		1531
2044	void	1532	void
2045	cancel (aio_req_ornot req)	1533	cancel (aio_req_ornot req)
2046	CODE:	1534	CODE:
2047	req_cancel (req);	1535	eio_cancel (req);
2048		1536
2049	void	1537	void
2050	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1538	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2051	CODE:	1539	PPCODE:
		1540	{
		1541	if (GIMME_V != G_VOID)
		1542	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1543
		1544	if (items > 1)
		1545	{
		1546	SV *cb_cv =get_cb (callback);
		1547
2052	SvREFCNT_dec (req->callback);	1548	SvREFCNT_dec (req->callback);
2053	req->callback = newSVsv (callback);	1549	req->callback = SvREFCNT_inc (cb_cv);
		1550	}
		1551	}
2054		1552
2055	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1553	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2056		1554
2057	void	1555	void
2058	add (aio_req grp, ...)	1556	add (aio_req grp, ...)
2059	PPCODE:	1557	PPCODE:
2060	{	1558	{
2061	int i;	1559	int i;
2062	aio_req req;
2063
2064	if (main_sig && !block_sig_level)
2065	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2066		1560
2067	if (grp->int1 == 2)	1561	if (grp->int1 == 2)
2068	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1562	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2069		1563
2070	for (i = 1; i < items; ++i )	1564	for (i = 1; i < items; ++i )
2071	{	1565	{
		1566	aio_req req;
		1567
2072	if (GIMME_V != G_VOID)	1568	if (GIMME_V != G_VOID)
2073	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1569	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2074		1570
2075	req = SvAIO_REQ (ST (i));	1571	req = SvAIO_REQ (ST (i));
2076		1572
2077	if (req)	1573	if (req)
2078	{	1574	eio_grp_add (grp, req);
2079	++grp->size;
2080	req->grp = grp;
2081
2082	req->grp_prev = 0;
2083	req->grp_next = grp->grp_first;
2084
2085	if (grp->grp_first)
2086	grp->grp_first->grp_prev = req;
2087
2088	grp->grp_first = req;
2089	}
2090	}	1575	}
2091	}	1576	}
2092		1577
2093	void	1578	void
2094	cancel_subs (aio_req_ornot req)	1579	cancel_subs (aio_req_ornot req)
…		…
2103	AV *av;	1588	AV *av;
2104		1589
2105	grp->errorno = errno;	1590	grp->errorno = errno;
2106		1591
2107	av = newAV ();	1592	av = newAV ();
		1593	av_extend (av, items - 1);
2108		1594
2109	for (i = 1; i < items; ++i )	1595	for (i = 1; i < items; ++i )
2110	av_push (av, newSVsv (ST (i)));	1596	av_push (av, newSVsv (ST (i)));
2111		1597
2112	SvREFCNT_dec (grp->sv1);	1598	SvREFCNT_dec (grp->sv1);
…		…
2119	grp->errorno = errorno;	1605	grp->errorno = errorno;
2120		1606
2121	void	1607	void
2122	limit (aio_req grp, int limit)	1608	limit (aio_req grp, int limit)
2123	CODE:	1609	CODE:
2124	grp->int2 = limit;	1610	eio_grp_limit (grp, limit);
2125	aio_grp_feed (grp);
2126		1611
2127	void	1612	void
2128	feed (aio_req grp, SV *callback=&PL_sv_undef)	1613	feed (aio_req grp, SV *callback=&PL_sv_undef)
2129	CODE:	1614	CODE:
2130	{	1615	{
2131	SvREFCNT_dec (grp->sv2);	1616	SvREFCNT_dec (grp->sv2);
2132	grp->sv2 = newSVsv (callback);	1617	grp->sv2 = newSVsv (callback);
		1618	grp->feed = aio_grp_feed;
2133		1619
2134	if (grp->int2 <= 0)	1620	if (grp->int2 <= 0)
2135	grp->int2 = 2;	1621	grp->int2 = 2;
2136		1622
2137	aio_grp_feed (grp);	1623	eio_grp_limit (grp, grp->int2);
2138	}	1624	}
2139		1625

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