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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.114 by root, Sat Apr 26 12:00:23 2008 UTC vs.
Revision 1.169 by root, Wed Aug 4 16:06:54 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
18	#ifdef _WIN32	28	#ifdef _WIN32
19		29
20	# define SIGIO 0	30	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	31	# undef malloc
23	#undef free	32	# undef free
24		33
25	// perl overrides all those nice win32 functions	34	// perl overrides all those nice win32 functions
26	# undef open	35	# undef open
27	# undef read	36	# undef read
28	# undef write	37	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
56		65
57	#else	66	#else
58		67
59	# include "autoconf/config.h"
60	# include <sys/time.h>	68	# include <sys/time.h>
61	# include <sys/select.h>	69	# include <sys/select.h>
62	# include <unistd.h>	70	# include <unistd.h>
63	# include <utime.h>	71	# include <utime.h>
64	# include <signal.h>	72	# include <signal.h>
65	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
66		74
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	75	#endif
82	#endif
83		76
84	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
85	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
86		82
87	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		84
95	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
97	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
98	#else	90	#else
		91	# define VAL64 NV
99	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
100	#endif	94	#endif
101		95
102	static HV *stash;	96	/*****************************************************************************/
103		97
104	#define dBUF \	98	#if __GNUC__ >= 3
105	char *aio_buf; \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	100	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	101	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	102	#endif
109	if (!aio_buf) \	103
110	return -1;	104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
111		108
112	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#ifndef POSIX_MADV_NORMAL
		146	# define POSIX_MADV_NORMAL 0
		147	# define NO_MADVISE 1
		148	#endif
		149	#ifndef POSIX_MADV_SEQUENTIAL
		150	# define POSIX_MADV_SEQUENTIAL 0
		151	#endif
		152	#ifndef POSIX_MADV_RANDOM
		153	# define POSIX_MADV_RANDOM 0
		154	#endif
		155	#ifndef POSIX_MADV_WILLNEED
		156	# define POSIX_MADV_WILLNEED 0
		157	#endif
		158	#ifndef POSIX_MADV_DONTNEED
		159	# define POSIX_MADV_DONTNEED 0
		160	#endif
		161
		162	#ifndef ST_NODEV
		163	# define ST_NODEV 0
		164	#endif
		165	#ifndef ST_NOEXEC
		166	# define ST_NOEXEC 0
		167	#endif
		168	#ifndef ST_SYNCHRONOUS
		169	# define ST_SYNCHRONOUS 0
		170	#endif
		171	#ifndef ST_MANDLOCK
		172	# define ST_MANDLOCK 0
		173	#endif
		174	#ifndef ST_WRITE
		175	# define ST_WRITE 0
		176	#endif
		177	#ifndef ST_APPEND
		178	# define ST_APPEND 0
		179	#endif
		180	#ifndef ST_IMMUTABLE
		181	# define ST_IMMUTABLE 0
		182	#endif
		183	#ifndef ST_NOATIME
		184	# define ST_NOATIME 0
		185	#endif
		186	#ifndef ST_NODIRATIME
		187	# define ST_NODIRATIME 0
		188	#endif
		189	#ifndef ST_RELATIME
		190	# define ST_RELATIME 0
		191	#endif
		192
		193	#ifndef MCL_CURRENT
		194	# define MCL_CURRENT 0
		195	#endif
		196	#ifndef MCL_FUTURE
		197	# define MCL_FUTURE 0
		198	#endif
		199
		200	#ifndef MAP_ANONYMOUS
		201	# ifdef MAP_ANON
		202	# define MAP_ANONYMOUS MAP_ANON
		203	# else
		204	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		205	# endif
		206	#endif
		207	#ifndef MAP_HUGETLB
		208	# define MAP_HUGETLB 0
		209	#endif
		210	#ifndef MAP_LOCKED
		211	# define MAP_LOCKED 0
		212	#endif
		213	#ifndef MAP_NORESERVE
		214	# define MAP_NORESERVE 0
		215	#endif
		216	#ifndef MAP_POPULATE
		217	# define MAP_POPULATE 0
		218	#endif
		219	#ifndef MAP_NONBLOCK
		220	# define MAP_NONBLOCK 0
		221	#endif
		222
		223	#ifndef PAGESIZE
		224	# define PAGESIZE sysconf (_SC_PAGESIZE)
		225	#endif
		226
		227	static int req_invoke (eio_req *req);
		228	#define EIO_FINISH(req) req_invoke (req)
		229	static void req_destroy (eio_req *grp);
		230	#define EIO_DESTROY(req) req_destroy (req)
113		231
114	enum {	232	enum {
115	REQ_QUIT,	233	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	};	234	};
131		235
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	236	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		237
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;	238	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	239	typedef eio_req *aio_req_ornot;
168		240
169	enum {	241	static SV *on_next_submit;
170	PRI_MIN = -4,	242	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	243	static int max_outstanding;
172		244
173	DEFAULT_PRI = 0,	245	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		246
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig (void)
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig (void)
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready (void)
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending (void)
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads (void)
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb (void);
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	247	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	248	static void req_cancel (aio_req req);
378		249
		250	static void want_poll (void)
		251	{
		252	/* write a dummy byte to the pipe so fh becomes ready */
		253	s_epipe_signal (&respipe);
		254	}
		255
		256	static void done_poll (void)
		257	{
		258	/* read any signals sent by the worker threads */
		259	s_epipe_drain (&respipe);
		260	}
		261
379	/* must be called at most once */	262	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	263	static SV *req_sv (aio_req req, HV *stash)
381	{	264	{
382	if (!req->self)	265	if (!req->self)
383	{	266	{
384	req->self = (SV *)newHV ();	267	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	268	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	269	}
387		270
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	271	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	272	}
390		273
391	static aio_req SvAIO_REQ (SV *sv)	274	static aio_req SvAIO_REQ (SV *sv)
392	{	275	{
393	MAGIC *mg;	276	MAGIC *mg;
394		277
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	278	if (!SvROK (sv)
		279	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		280	&& SvSTASH (SvRV (sv)) != aio_req_stash
		281	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	282	croak ("object of class IO::AIO::REQ expected");
397		283
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	284	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		285
400	return mg ? (aio_req)mg->mg_ptr : 0;	286	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	287	}
402		288
403	static void aio_grp_feed (aio_req grp)	289	static void aio_grp_feed (aio_req grp)
404	{	290	{
405	block_sig ();	291	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	292	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	293	dSP;
414		294
415	ENTER;	295	ENTER;
416	SAVETMPS;	296	SAVETMPS;
417	PUSHMARK (SP);	297	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	298	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	299	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	300	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	301	SPAGAIN;
422	FREETMPS;	302	FREETMPS;
423	LEAVE;	303	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	}	304	}
434
435	unblock_sig ();
436	}	305	}
437		306
438	static void aio_grp_dec (aio_req grp)	307	static void req_submit (eio_req *req)
439	{	308	{
440	--grp->size;	309	eio_submit (req);
441		310
442	/* call feeder, if applicable */	311	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	312	{
448	block_sig ();	313	dSP;
		314	SV *cb = sv_2mortal (on_next_submit);
449		315
450	if (!req_invoke (grp))	316	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		317
457	req_destroy (grp);	318	PUSHMARK (SP);
458	unblock_sig ();	319	PUTBACK;
		320	call_sv (cb, G_DISCARD | G_EVAL);
459	}	321	}
460	}	322	}
461		323
462	static int req_invoke (aio_req req)	324	static int req_invoke (eio_req *req)
463	{	325	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	326	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	327	SvREADONLY_off (req->sv2);
468		328
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	329	if (!EIO_CANCELLED (req) && req->callback)
470	{	330	{
		331	dSP;
		332	static SV *sv_result_cache; /* caches the result integer SV */
		333	SV *sv_result;
		334
471	ENTER;	335	ENTER;
472	SAVETMPS;	336	SAVETMPS;
473	PUSHMARK (SP);	337	PUSHMARK (SP);
474	EXTEND (SP, 1);	338	EXTEND (SP, 1);
475		339
		340	/* do not recreate the result IV from scratch each time */
		341	if (expect_true (sv_result_cache))
		342	{
		343	sv_result = sv_result_cache; sv_result_cache = 0;
		344	SvIV_set (sv_result, req->result);
		345	}
		346	else
		347	{
		348	sv_result = newSViv (req->result);
		349	SvREADONLY_on (sv_result);
		350	}
		351
476	switch (req->type)	352	switch (req->type)
477	{	353	{
478	case REQ_READDIR:	354	case EIO_READDIR:
479	{	355	{
480	SV *rv = &PL_sv_undef;	356	SV *rv = &PL_sv_undef;
481		357
482	if (req->result >= 0)	358	if (req->result >= 0)
483	{	359	{
484	int i;	360	int i;
485	char *buf = req->ptr2;	361	char *names = (char *)req->ptr2;
		362	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	363	AV *av = newAV ();
487		364
488	av_extend (av, req->result - 1);	365	av_extend (av, req->result - 1);
489		366
490	for (i = 0; i < req->result; ++i)	367	for (i = 0; i < req->result; ++i)
491	{	368	{
492	SV *sv = newSVpv (buf, 0);	369	if (req->int1 & EIO_READDIR_DENTS)
		370	{
		371	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		372
		373	if (req->int1 & EIO_READDIR_CUSTOM2)
		374	{
		375	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		376	AV *avent = newAV ();
		377
		378	av_extend (avent, 2);
		379
		380	if (!sv_type [ent->type])
		381	{
		382	sv_type [ent->type] = newSViv (ent->type);
		383	SvREADONLY_on (sv_type [ent->type]);
		384	}
		385
		386	av_store (avent, 0, namesv);
		387	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		388	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		389
		390	av_store (av, i, newRV_noinc ((SV *)avent));
		391	}
		392	else
494	av_store (av, i, sv);	393	av_store (av, i, namesv);
		394
		395	++ent;
		396	}
		397	else
		398	{
		399	SV *name = newSVpv (names, 0);
		400	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	401	names += SvCUR (name) + 1;
		402	}
496	}	403	}
497		404
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	405	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	406	}
500		407
501	PUSHs (rv);	408	PUSHs (rv);
		409
		410	if (req->int1 & EIO_READDIR_CUSTOM1)
		411	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	412	}
503	break;	413	break;
504		414
505	case REQ_OPEN:	415	case EIO_OPEN:
506	{	416	{
507	/* convert fd to fh */	417	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	418	SV *fh = &PL_sv_undef;
509		419
510	if (req->result >= 0)	420	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	422	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	423	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	424	char sym [64];
515	int symlen;	425	int symlen;
516		426
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	427	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	428	gv_init (gv, aio_stash, sym, symlen, 0);
519		429
520	symlen = snprintf (	430	symlen = snprintf (
521	sym,	431	sym,
522	sizeof (sym),	432	sizeof (sym),
523	"%s&=%d",	433	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	434	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	435	(int)req->result
526	);	436	);
527		437
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	438	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	439	fh = (SV *)gv;
530	}	440	}
531		441
532	PUSHs (fh);	442	PUSHs (fh);
533	}	443	}
534	break;	444	break;
535		445
		446	case EIO_STATVFS:
		447	case EIO_FSTATVFS:
		448	{
		449	SV *rv = &PL_sv_undef;
		450
		451	if (req->result >= 0)
		452	{
		453	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		454	HV *hv = newHV ();
		455
		456	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		457
		458	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		459	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		460	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		461	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		462	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		463	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		464	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		465	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		466	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		467	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		468	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		469	}
		470
		471	PUSHs (rv);
		472	}
		473
		474	break;
		475
536	case REQ_GROUP:	476	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	477	req->int1 = 2; /* mark group as finished */
538		478
539	if (req->sv1)	479	if (req->sv1)
540	{	480	{
541	int i;	481	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	485	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	486	PUSHs (*av_fetch (av, i, 0));
547	}	487	}
548	break;	488	break;
549		489
550	case REQ_NOP:	490	case EIO_NOP:
551	case REQ_BUSY:	491	case EIO_BUSY:
552	break;	492	break;
553		493
554	case REQ_READLINK:	494	case EIO_READLINK:
555	if (req->result > 0)	495	if (req->result > 0)
556	{	496	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;	497	break;
562		498
563	case REQ_STAT:	499	case EIO_STAT:
564	case REQ_LSTAT:	500	case EIO_LSTAT:
565	case REQ_FSTAT:	501	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	502	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	503	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	504	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	505	PUSHs (sv_result);
570	break;	506	break;
571		507
572	case REQ_READ:	508	case EIO_READ:
		509	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	510	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	511	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	512	SvPOK_only (req->sv2);
		513	SvSETMAGIC (req->sv2);
		514	PUSHs (sv_result);
		515	}
576	break;	516	break;
577		517
		518	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		519	if (req->result > 0)
		520	SvIV_set (sv_result, 0);
		521	/* FALLTHROUGH */
		522
578	default:	523	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	524	PUSHs (sv_result);
580	break;	525	break;
581	}	526	}
582		527
583	errno = req->errorno;	528	errno = req->errorno;
584		529
585	PUTBACK;	530	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	531	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	532	SPAGAIN;
588		533
		534	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		535	SvREFCNT_dec (sv_result);
		536	else
		537	sv_result_cache = sv_result;
		538
589	FREETMPS;	539	FREETMPS;
590	LEAVE;	540	LEAVE;
591		541
592	PUTBACK;	542	PUTBACK;
593	}	543	}
594		544
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);	545	return !!SvTRUE (ERRSV);
610	}	546	}
611		547
612	static void req_destroy (aio_req req)	548	static void req_destroy (aio_req req)
613	{	549	{
614	if (req->self)	550	if (req->self)
…		…
619		555
620	SvREFCNT_dec (req->sv1);	556	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	557	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
623		559
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	560	Safefree (req);
628	}	561	}
629		562
630	static void req_cancel_subs (aio_req grp)	563	static void req_cancel_subs (aio_req grp)
631	{	564	{
632	aio_req sub;	565	aio_req sub;
633		566
634	if (grp->type != REQ_GROUP)	567	if (grp->type != EIO_GROUP)
635	return;	568	return;
636		569
637	SvREFCNT_dec (grp->sv2);	570	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	571	grp->sv2 = 0;
639		572
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	573	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	574	}
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		575
657	static void	576	static void
658	create_respipe (void)	577	create_respipe (void)
659	{	578	{
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))	579	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	580	croak ("IO::AIO: unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}
694
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread (void)
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}	581	}
789		582
790	static void poll_wait (void)	583	static void poll_wait (void)
791	{	584	{
792	fd_set rfd;
793
794	while (nreqs)	585	while (eio_nreqs ())
795	{	586	{
796	int size;	587	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	588
		589	X_LOCK (reslock);
798	size = res_queue.size;	590	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	591	X_UNLOCK (reslock);
800		592
801	if (size)	593	if (size)
802	return;	594	return;
803		595
804	maybe_start_thread ();	596	etp_maybe_start_thread ();
805		597
806	FD_ZERO (&rfd);	598	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	599	}
811	}	600	}
812		601
813	static int poll_cb (void)	602	static int poll_cb (void)
814	{	603	{
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 (;;)	604	for (;;)
828	{	605	{
829	for (;;)	606	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		607
833	X_LOCK (reslock);	608	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);	609	croak (0);
868	}
869		610
870	count++;	611	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	612	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		613
890	poll_wait ();	614	poll_wait ();
891
892	++maxreqs;
893	}	615	}
		616	}
894		617
895	unblock_sig ();	618	static void atfork_child (void)
896	return count;	619	{
		620	create_respipe ();
897	}	621	}
898		622
899	/*****************************************************************************/	623	/*****************************************************************************/
900	/* work around various missing functions */
901		624
902	#if !HAVE_PREADWRITE	625	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	626	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	627	# define munmap(addr,length) (errno = ENOSYS, -1)
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif	628	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		629
1080	if (res < 0	630	#define MMAP_MAGIC PERL_MAGIC_ext
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182		631
1183	static int	632	static int
1184	aio_close (int fd)	633	mmap_free (pTHX_ SV *sv, MAGIC *mg)
1185	{	634	{
1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	635	int old_errno = errno;
		636	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		637	errno = old_errno;
1187		638
1188	X_LOCK (wrklock);	639	mg->mg_obj = 0; /* just in case */
1189		640
1190	if (close_pipe < 0)	641	SvREADONLY_off (sv);
1191	{
1192	int pipefd [2];
1193		642
1194	if (pipe (pipefd) < 0	643	if (SvPVX (sv) != mg->mg_ptr)
1195	|| close (pipefd [1]) < 0	644	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
1197	{
1198	X_UNLOCK (wrklock);
1199	return -1;
1200	}
1201		645
1202	close_pipe = pipefd [0];	646	SvCUR_set (sv, 0);
1203	}	647	SvPVX (sv) = 0;
		648	SvOK_off (sv);
1204		649
1205	X_UNLOCK (wrklock);	650	return 0;
1206
1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
1208	}	651	}
		652
		653	static MGVTBL mmap_vtbl = {
		654	0, 0, 0, 0, mmap_free
		655	};
1209		656
1210	/*****************************************************************************/	657	/*****************************************************************************/
1211		658
1212	X_THREAD_PROC (aio_proc)	659	static SV *
		660	get_cb (SV *cb_sv)
1213	{	661	{
1214	aio_req req;	662	SvGETMAGIC (cb_sv);
1215	struct timespec ts;	663	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1216	worker *self = (worker *)thr_arg;
1217
1218	/* try to distribute timeouts somewhat randomly */
1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1220
1221	for (;;)
1222	{
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224
1225	X_LOCK (reqlock);
1226
1227	for (;;)
1228	{
1229	self->req = req = reqq_shift (&req_queue);
1230
1231	if (req)
1232	break;
1233
1234	++idle;
1235
1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1237	== ETIMEDOUT)
1238	{
1239	if (idle > max_idle)
1240	{
1241	--idle;
1242	X_UNLOCK (reqlock);
1243	X_LOCK (wrklock);
1244	--started;
1245	X_UNLOCK (wrklock);
1246	goto quit;
1247	}
1248
1249	/* we are allowed to idle, so do so without any timeout */
1250	X_COND_WAIT (reqwait, reqlock);
1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1252	}
1253
1254	--idle;
1255	}
1256
1257	--nready;
1258
1259	X_UNLOCK (reqlock);
1260
1261	errno = 0; /* strictly unnecessary */
1262
1263	if (!(req->flags & FLAG_CANCELLED))
1264	switch (req->type)
1265	{
1266	case REQ_READ: req->result = req->offs >= 0
1267	? pread (req->int1, req->ptr1, req->size, req->offs)
1268	: read (req->int1, req->ptr1, req->size); break;
1269	case REQ_WRITE: req->result = req->offs >= 0
1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1271	: write (req->int1, req->ptr1, req->size); break;
1272
1273	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1275
1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1279
1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1286
1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1297
1298	case REQ_SYNC: req->result = 0; sync (); break;
1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1301
1302	case REQ_READDIR: scandir_ (req, self); break;
1303
1304	case REQ_BUSY:
1305	#ifdef _WIN32
1306	Sleep (req->nv1 * 1000.);
1307	#else
1308	{
1309	struct timeval tv;
1310
1311	tv.tv_sec = req->nv1;
1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1313
1314	req->result = select (0, 0, 0, 0, &tv);
1315	}
1316	#endif
1317	break;
1318
1319	case REQ_UTIME:
1320	case REQ_FUTIME:
1321	{
1322	struct timeval tv[2];
1323	struct timeval *times;
1324
1325	if (req->nv1 != -1. || req->nv2 != -1.)
1326	{
1327	tv[0].tv_sec = req->nv1;
1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1329	tv[1].tv_sec = req->nv2;
1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1331
1332	times = tv;
1333	}
1334	else
1335	times = 0;
1336
1337
1338	req->result = req->type == REQ_FUTIME
1339	? futimes (req->int1, times)
1340	: utimes (req->ptr1, times);
1341	}
1342
1343	case REQ_GROUP:
1344	case REQ_NOP:
1345	break;
1346
1347	case REQ_QUIT:
1348	goto quit;
1349
1350	default:
1351	req->result = -1;
1352	break;
1353	}
1354
1355	req->errorno = errno;
1356
1357	X_LOCK (reslock);
1358
1359	++npending;
1360
1361	if (!reqq_push (&res_queue, req))
1362	{
1363	/* write a dummy byte to the pipe so fh becomes ready */
1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1365
1366	/* optionally signal the main thread asynchronously */
1367	if (main_sig)
1368	pthread_kill (main_tid, main_sig);
1369	}
1370
1371	self->req = 0;
1372	worker_clear (self);
1373
1374	X_UNLOCK (reslock);
1375	}
1376
1377	quit:
1378	X_LOCK (wrklock);
1379	worker_free (self);
1380	X_UNLOCK (wrklock);
1381
1382	return 0;
1383	}
1384
1385	/*****************************************************************************/
1386
1387	static void atfork_prepare (void)
1388	{
1389	X_LOCK (wrklock);
1390	X_LOCK (reqlock);
1391	X_LOCK (reslock);
1392	#if !HAVE_PREADWRITE
1393	X_LOCK (preadwritelock);
1394	#endif
1395	#if !HAVE_READDIR_R
1396	X_LOCK (readdirlock);
1397	#endif
1398	}
1399
1400	static void atfork_parent (void)
1401	{
1402	#if !HAVE_READDIR_R
1403	X_UNLOCK (readdirlock);
1404	#endif
1405	#if !HAVE_PREADWRITE
1406	X_UNLOCK (preadwritelock);
1407	#endif
1408	X_UNLOCK (reslock);
1409	X_UNLOCK (reqlock);
1410	X_UNLOCK (wrklock);
1411	}
1412
1413	static void atfork_child (void)
1414	{
1415	aio_req prv;
1416
1417	while (prv = reqq_shift (&req_queue))
1418	req_destroy (prv);
1419
1420	while (prv = reqq_shift (&res_queue))
1421	req_destroy (prv);
1422
1423	while (wrk_first.next != &wrk_first)
1424	{
1425	worker *wrk = wrk_first.next;
1426
1427	if (wrk->req)
1428	req_destroy (wrk->req);
1429
1430	worker_clear (wrk);
1431	worker_free (wrk);
1432	}
1433
1434	started = 0;
1435	idle = 0;
1436	nreqs = 0;
1437	nready = 0;
1438	npending = 0;
1439
1440	create_respipe ();
1441
1442	atfork_parent ();
1443	}	664	}
1444		665
1445	#define dREQ \	666	#define dREQ \
		667	SV *cb_cv; \
1446	aio_req req; \	668	aio_req req; \
1447	int req_pri = next_pri; \	669	int req_pri = next_pri; \
1448	next_pri = DEFAULT_PRI + PRI_BIAS; \	670	next_pri = EIO_PRI_DEFAULT; \
1449	\	671	\
1450	if (SvOK (callback) && !SvROK (callback)) \	672	cb_cv = get_cb (callback); \
1451	croak ("callback must be undef or of reference type"); \
1452	\	673	\
1453	Newz (0, req, 1, aio_cb); \	674	Newz (0, req, 1, eio_req); \
1454	if (!req) \	675	if (!req) \
1455	croak ("out of memory during aio_req allocation"); \	676	croak ("out of memory during eio_req allocation"); \
1456	\	677	\
1457	req->callback = newSVsv (callback); \	678	req->callback = SvREFCNT_inc (cb_cv); \
1458	req->pri = req_pri	679	req->pri = req_pri
1459		680
1460	#define REQ_SEND \	681	#define REQ_SEND \
		682	PUTBACK; \
1461	req_send (req); \	683	req_submit (req); \
		684	SPAGAIN; \
1462	\	685	\
1463	if (GIMME_V != G_VOID) \	686	if (GIMME_V != G_VOID) \
1464	XPUSHs (req_sv (req, AIO_REQ_KLASS));	687	XPUSHs (req_sv (req, aio_req_stash));
1465		688
1466	MODULE = IO::AIO PACKAGE = IO::AIO	689	MODULE = IO::AIO PACKAGE = IO::AIO
1467		690
1468	PROTOTYPES: ENABLE	691	PROTOTYPES: ENABLE
1469		692
1470	BOOT:	693	BOOT:
1471	{	694	{
1472	stash = gv_stashpv ("IO::AIO", 1);	695	static const struct {
1473		696	const char *name;
1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	697	IV iv;
1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	698	} *civ, const_iv[] = {
1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	699	# define const_niv(name, value) { # name, (IV) value },
1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	700	# define const_iv(name) { # name, (IV) name },
1478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	701	# define const_eio(name) { # name, (IV) EIO_ ## name },
		702	const_iv (EXDEV)
		703	const_iv (ENOSYS)
		704	const_iv (O_RDONLY)
		705	const_iv (O_WRONLY)
		706	const_iv (O_RDWR)
		707	const_iv (O_CREAT)
		708	const_iv (O_TRUNC)
		709	const_iv (O_EXCL)
		710	const_iv (O_APPEND)
1479	#ifdef _WIN32	711	#ifndef _WIN32
1480	X_MUTEX_CHECK (wrklock);	712	const_iv (S_IFIFO)
1481	X_MUTEX_CHECK (reslock);
1482	X_MUTEX_CHECK (reqlock);
1483	X_MUTEX_CHECK (reqwait);
1484	X_MUTEX_CHECK (preadwritelock);
1485	X_MUTEX_CHECK (readdirlock);
1486
1487	X_COND_CHECK (reqwait);
1488	#else
1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1491	#endif	713	#endif
		714	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		715	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		716	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		717	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		718	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		719	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1492		720
		721	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		722	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		723	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		724	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		725	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		726
		727	const_iv (ST_RDONLY)
		728	const_iv (ST_NOSUID)
		729	const_iv (ST_NODEV)
		730	const_iv (ST_NOEXEC)
		731	const_iv (ST_SYNCHRONOUS)
		732	const_iv (ST_MANDLOCK)
		733	const_iv (ST_WRITE)
		734	const_iv (ST_APPEND)
		735	const_iv (ST_IMMUTABLE)
		736	const_iv (ST_NOATIME)
		737	const_iv (ST_NODIRATIME)
		738	const_iv (ST_RELATIME)
		739
		740	const_iv (PROT_EXEC)
		741	const_iv (PROT_NONE)
		742	const_iv (PROT_READ)
		743	const_iv (PROT_WRITE)
		744
		745	/*const_iv (MAP_FIXED)*/
		746	const_iv (MAP_PRIVATE)
		747	const_iv (MAP_SHARED)
		748	const_iv (MAP_ANONYMOUS)
		749
		750	/* linuxish */
		751	const_iv (MAP_HUGETLB)
		752	const_iv (MAP_LOCKED)
		753	const_iv (MAP_NORESERVE)
		754	const_iv (MAP_POPULATE)
		755	const_iv (MAP_NONBLOCK)
		756
		757	const_iv (MCL_FUTURE)
		758	const_iv (MCL_CURRENT)
		759
		760	const_eio (MS_ASYNC)
		761	const_eio (MS_INVALIDATE)
		762	const_eio (MS_SYNC)
		763
		764	const_eio (MT_MODIFY)
		765
		766	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		767	const_eio (SYNC_FILE_RANGE_WRITE)
		768	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		769
		770	const_eio (READDIR_DENTS)
		771	const_eio (READDIR_DIRS_FIRST)
		772	const_eio (READDIR_STAT_ORDER)
		773	const_eio (READDIR_FOUND_UNKNOWN)
		774
		775	const_eio (DT_UNKNOWN)
		776	const_eio (DT_FIFO)
		777	const_eio (DT_CHR)
		778	const_eio (DT_DIR)
		779	const_eio (DT_BLK)
		780	const_eio (DT_REG)
		781	const_eio (DT_LNK)
		782	const_eio (DT_SOCK)
		783	const_eio (DT_WHT)
		784	};
		785
		786	aio_stash = gv_stashpv ("IO::AIO" , 1);
		787	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		788	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		789
		790	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		791	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		792
		793	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		794
1493	create_respipe ();	795	create_respipe ();
1494		796
1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	797	if (eio_init (want_poll, done_poll) < 0)
		798	croak ("IO::AIO: unable to initialise eio library");
		799
		800	/* atfork child called in fifo order, so before eio's handler */
		801	X_THREAD_ATFORK (0, 0, atfork_child);
1496	}	802	}
1497		803
1498	void	804	void
1499	max_poll_reqs (int nreqs)	805	max_poll_reqs (int nreqs)
1500	PROTOTYPE: $	806	PROTOTYPE: $
1501	CODE:	807	CODE:
1502	max_poll_reqs = nreqs;	808	eio_set_max_poll_reqs (nreqs);
1503		809
1504	void	810	void
1505	max_poll_time (double nseconds)	811	max_poll_time (double nseconds)
1506	PROTOTYPE: $	812	PROTOTYPE: $
1507	CODE:	813	CODE:
1508	max_poll_time = nseconds * AIO_TICKS;	814	eio_set_max_poll_time (nseconds);
1509		815
1510	void	816	void
1511	min_parallel (int nthreads)	817	min_parallel (int nthreads)
1512	PROTOTYPE: $	818	PROTOTYPE: $
		819	CODE:
		820	eio_set_min_parallel (nthreads);
1513		821
1514	void	822	void
1515	max_parallel (int nthreads)	823	max_parallel (int nthreads)
1516	PROTOTYPE: $	824	PROTOTYPE: $
		825	CODE:
		826	eio_set_max_parallel (nthreads);
1517		827
1518	void	828	void
1519	max_idle (int nthreads)	829	max_idle (int nthreads)
1520	PROTOTYPE: $	830	PROTOTYPE: $
1521	CODE:	831	CODE:
1522	set_max_idle (nthreads);	832	eio_set_max_idle (nthreads);
1523		833
1524	int	834	void
1525	max_outstanding (int maxreqs)	835	max_outstanding (int maxreqs)
1526	PROTOTYPE: $	836	PROTOTYPE: $
1527	CODE:	837	CODE:
1528	RETVAL = max_outstanding;
1529	max_outstanding = maxreqs;	838	max_outstanding = maxreqs;
1530	OUTPUT:
1531	RETVAL
1532		839
1533	void	840	void
1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	841	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1535	PROTOTYPE: $$$;$	842	PROTOTYPE: $$$;$
1536	PPCODE:	843	PPCODE:
1537	{	844	{
1538	dREQ;	845	dREQ;
1539		846
1540	req->type = REQ_OPEN;	847	req->type = EIO_OPEN;
1541	req->sv1 = newSVsv (pathname);	848	req->sv1 = newSVsv (pathname);
1542	req->ptr1 = SvPVbyte_nolen (req->sv1);	849	req->ptr1 = SvPVbyte_nolen (req->sv1);
1543	req->int1 = flags;	850	req->int1 = flags;
1544	req->mode = mode;	851	req->int2 = mode;
1545		852
1546	REQ_SEND;	853	REQ_SEND;
1547	}	854	}
1548		855
1549	void	856	void
1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	857	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$	858	PROTOTYPE: $;$
1552	ALIAS:	859	ALIAS:
1553	aio_fsync = REQ_FSYNC	860	aio_fsync = EIO_FSYNC
1554	aio_fdatasync = REQ_FDATASYNC	861	aio_fdatasync = EIO_FDATASYNC
1555	PPCODE:	862	PPCODE:
1556	{	863	{
		864	int fd = s_fileno_croak (fh, 0);
1557	dREQ;	865	dREQ;
1558		866
1559	req->type = ix;	867	req->type = ix;
1560	req->sv1 = newSVsv (fh);	868	req->sv1 = newSVsv (fh);
1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	869	req->int1 = fd;
		870
		871	REQ_SEND (req);
		872	}
		873
		874	void
		875	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		876	PROTOTYPE: $$$$;$
		877	PPCODE:
		878	{
		879	int fd = s_fileno_croak (fh, 0);
		880	dREQ;
		881
		882	req->type = EIO_SYNC_FILE_RANGE;
		883	req->sv1 = newSVsv (fh);
		884	req->int1 = fd;
		885	req->offs = offset;
		886	req->size = nbytes;
		887	req->int2 = flags;
1562		888
1563	REQ_SEND (req);	889	REQ_SEND (req);
1564	}	890	}
1565		891
1566	void	892	void
1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)	893	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1568	PROTOTYPE: $;$	894	PROTOTYPE: $;$
1569	PPCODE:	895	PPCODE:
1570	{	896	{
		897	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		898	int fd = s_fileno_croak (fh, 0);
1571	dREQ;	899	dREQ;
1572		900
		901	if (close_pipe < 0)
		902	{
		903	int pipefd [2];
		904
		905	if (pipe (pipefd) < 0
		906	|| close (pipefd [1]) < 0
		907	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		908	abort (); /*D*/
		909
		910	close_pipe = pipefd [0];
		911	}
		912
1573	req->type = REQ_CLOSE;	913	req->type = EIO_DUP2;
		914	req->int1 = close_pipe;
1574	req->sv1 = newSVsv (fh);	915	req->sv2 = newSVsv (fh);
1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	916	req->int2 = fd;
1576		917
1577	REQ_SEND (req);	918	REQ_SEND (req);
1578	}	919	}
1579		920
1580	void	921	void
1581	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	922	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1582	ALIAS:	923	ALIAS:
1583	aio_read = REQ_READ	924	aio_read = EIO_READ
1584	aio_write = REQ_WRITE	925	aio_write = EIO_WRITE
1585	PROTOTYPE: $$$$$;$	926	PROTOTYPE: $$$$$;$
1586	PPCODE:	927	PPCODE:
1587	{	928	{
1588	STRLEN svlen;	929	STRLEN svlen;
		930	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1589	char *svptr = SvPVbyte (data, svlen);	931	char *svptr = SvPVbyte (data, svlen);
1590	UV len = SvUV (length);	932	UV len = SvUV (length);
1591		933
1592	SvUPGRADE (data, SVt_PV);
1593	SvPOK_on (data);
1594
1595	if (dataoffset < 0)	934	if (dataoffset < 0)
1596	dataoffset += svlen;	935	dataoffset += svlen;
1597		936
1598	if (dataoffset < 0 || dataoffset > svlen)	937	if (dataoffset < 0 || dataoffset > svlen)
1599	croak ("dataoffset outside of data scalar");	938	croak ("dataoffset outside of data scalar");
1600		939
1601	if (ix == REQ_WRITE)	940	if (ix == EIO_WRITE)
1602	{	941	{
1603	/* write: check length and adjust. */	942	/* write: check length and adjust. */
1604	if (!SvOK (length) || len + dataoffset > svlen)	943	if (!SvOK (length) || len + dataoffset > svlen)
1605	len = svlen - dataoffset;	944	len = svlen - dataoffset;
1606	}	945	}
1607	else	946	else
1608	{	947	{
1609	/* read: grow scalar as necessary */	948	/* read: check type and grow scalar as necessary */
		949	SvUPGRADE (data, SVt_PV);
1610	svptr = SvGROW (data, len + dataoffset + 1);	950	svptr = SvGROW (data, len + dataoffset + 1);
1611	}	951	}
1612		952
1613	if (len < 0)
1614	croak ("length must not be negative");
1615
1616	{	953	{
1617	dREQ;	954	dREQ;
1618		955
1619	req->type = ix;	956	req->type = ix;
1620	req->sv1 = newSVsv (fh);	957	req->sv1 = newSVsv (fh);
1621	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	958	req->int1 = fd;
1622	: IoOFP (sv_2io (fh)));
1623	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	959	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1624	req->size = len;	960	req->size = len;
1625	req->sv2 = SvREFCNT_inc (data);	961	req->sv2 = SvREFCNT_inc (data);
1626	req->ptr1 = (char *)svptr + dataoffset;	962	req->ptr2 = (char *)svptr + dataoffset;
1627	req->stroffset = dataoffset;	963	req->stroffset = dataoffset;
1628		964
1629	if (!SvREADONLY (data))	965	if (!SvREADONLY (data))
1630	{	966	{
1631	SvREADONLY_on (data);	967	SvREADONLY_on (data);
…		…
1642	PPCODE:	978	PPCODE:
1643	{	979	{
1644	SV *data;	980	SV *data;
1645	dREQ;	981	dREQ;
1646		982
1647	data = newSV (NAME_MAX);
1648	SvPOK_on (data);
1649
1650	req->type = REQ_READLINK;	983	req->type = EIO_READLINK;
1651	req->sv1 = newSVsv (path);	984	req->sv1 = newSVsv (path);
1652	req->ptr2 = SvPVbyte_nolen (req->sv1);	985	req->ptr1 = SvPVbyte_nolen (req->sv1);
1653	req->sv2 = data;
1654	req->ptr1 = SvPVbyte_nolen (data);
1655		986
1656	REQ_SEND;	987	REQ_SEND;
1657	}	988	}
1658		989
1659	void	990	void
1660	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	991	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1661	PROTOTYPE: $$$$;$	992	PROTOTYPE: $$$$;$
1662	PPCODE:	993	PPCODE:
1663	{	994	{
		995	int ifd = s_fileno_croak (in_fh , 0);
		996	int ofd = s_fileno_croak (out_fh, 1);
1664	dREQ;	997	dREQ;
1665		998
1666	req->type = REQ_SENDFILE;	999	req->type = EIO_SENDFILE;
1667	req->sv1 = newSVsv (out_fh);	1000	req->sv1 = newSVsv (out_fh);
1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1001	req->int1 = ofd;
1669	req->sv2 = newSVsv (in_fh);	1002	req->sv2 = newSVsv (in_fh);
1670	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1003	req->int2 = ifd;
1671	req->offs = SvVAL64 (in_offset);	1004	req->offs = in_offset;
1672	req->size = length;	1005	req->size = length;
1673		1006
1674	REQ_SEND;	1007	REQ_SEND;
1675	}	1008	}
1676		1009
1677	void	1010	void
1678	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1011	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1679	PROTOTYPE: $$$;$	1012	PROTOTYPE: $$$;$
1680	PPCODE:	1013	PPCODE:
1681	{	1014	{
		1015	int fd = s_fileno_croak (fh, 0);
1682	dREQ;	1016	dREQ;
1683		1017
1684	req->type = REQ_READAHEAD;	1018	req->type = EIO_READAHEAD;
1685	req->sv1 = newSVsv (fh);	1019	req->sv1 = newSVsv (fh);
1686	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1020	req->int1 = fd;
1687	req->offs = SvVAL64 (offset);	1021	req->offs = offset;
1688	req->size = length;	1022	req->size = length;
1689		1023
1690	REQ_SEND;	1024	REQ_SEND;
1691	}	1025	}
1692		1026
1693	void	1027	void
1694	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1028	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1695	ALIAS:	1029	ALIAS:
1696	aio_stat = REQ_STAT	1030	aio_stat = EIO_STAT
1697	aio_lstat = REQ_LSTAT	1031	aio_lstat = EIO_LSTAT
		1032	aio_statvfs = EIO_STATVFS
1698	PPCODE:	1033	PPCODE:
1699	{	1034	{
1700	dREQ;	1035	dREQ;
1701		1036
1702	req->ptr2 = malloc (sizeof (Stat_t));
1703	if (!req->ptr2)
1704	{
1705	req_destroy (req);
1706	croak ("out of memory during aio_stat statdata allocation");
1707	}
1708
1709	req->flags |= FLAG_PTR2_FREE;
1710	req->sv1 = newSVsv (fh_or_path);	1037	req->sv1 = newSVsv (fh_or_path);
1711		1038
1712	if (SvPOK (fh_or_path))	1039	if (SvPOK (req->sv1))
1713	{	1040	{
1714	req->type = ix;	1041	req->type = ix;
1715	req->ptr1 = SvPVbyte_nolen (req->sv1);	1042	req->ptr1 = SvPVbyte_nolen (req->sv1);
1716	}	1043	}
1717	else	1044	else
1718	{	1045	{
1719	req->type = REQ_FSTAT;	1046	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1720	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1047	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1721	}	1048	}
1722		1049
1723	REQ_SEND;	1050	REQ_SEND;
1724	}	1051	}
…		…
1731		1058
1732	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1059	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1733	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1060	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1734	req->sv1 = newSVsv (fh_or_path);	1061	req->sv1 = newSVsv (fh_or_path);
1735		1062
1736	if (SvPOK (fh_or_path))	1063	if (SvPOK (req->sv1))
1737	{	1064	{
1738	req->type = REQ_UTIME;	1065	req->type = EIO_UTIME;
1739	req->ptr1 = SvPVbyte_nolen (req->sv1);	1066	req->ptr1 = SvPVbyte_nolen (req->sv1);
1740	}	1067	}
1741	else	1068	else
1742	{	1069	{
1743	req->type = REQ_FUTIME;	1070	req->type = EIO_FUTIME;
1744	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1071	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1745	}	1072	}
1746		1073
1747	REQ_SEND;	1074	REQ_SEND;
1748	}	1075	}
…		…
1754	dREQ;	1081	dREQ;
1755		1082
1756	req->sv1 = newSVsv (fh_or_path);	1083	req->sv1 = newSVsv (fh_or_path);
1757	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1084	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1758		1085
1759	if (SvPOK (fh_or_path))	1086	if (SvPOK (req->sv1))
1760	{	1087	{
1761	req->type = REQ_TRUNCATE;	1088	req->type = EIO_TRUNCATE;
1762	req->ptr1 = SvPVbyte_nolen (req->sv1);	1089	req->ptr1 = SvPVbyte_nolen (req->sv1);
1763	}	1090	}
1764	else	1091	else
1765	{	1092	{
1766	req->type = REQ_FTRUNCATE;	1093	req->type = EIO_FTRUNCATE;
1767	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1094	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1768	}	1095	}
1769		1096
1770	REQ_SEND;	1097	REQ_SEND;
1771	}	1098	}
1772		1099
1773	void	1100	void
1774	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1101	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1102	ALIAS:
		1103	aio_chmod = EIO_CHMOD
		1104	aio_mkdir = EIO_MKDIR
1775	PPCODE:	1105	PPCODE:
1776	{	1106	{
1777	dREQ;	1107	dREQ;
1778		1108
1779	req->mode = mode;	1109	req->int2 = mode;
1780	req->sv1 = newSVsv (fh_or_path);	1110	req->sv1 = newSVsv (fh_or_path);
1781		1111
1782	if (SvPOK (fh_or_path))	1112	if (SvPOK (req->sv1))
1783	{	1113	{
1784	req->type = REQ_CHMOD;	1114	req->type = ix;
1785	req->ptr1 = SvPVbyte_nolen (req->sv1);	1115	req->ptr1 = SvPVbyte_nolen (req->sv1);
1786	}	1116	}
1787	else	1117	else
1788	{	1118	{
1789	req->type = REQ_FCHMOD;	1119	req->type = EIO_FCHMOD;
1790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1120	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1791	}	1121	}
1792		1122
1793	REQ_SEND;	1123	REQ_SEND;
1794	}	1124	}
…		…
1801		1131
1802	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1132	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1803	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1133	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1804	req->sv1 = newSVsv (fh_or_path);	1134	req->sv1 = newSVsv (fh_or_path);
1805		1135
1806	if (SvPOK (fh_or_path))	1136	if (SvPOK (req->sv1))
1807	{	1137	{
1808	req->type = REQ_CHOWN;	1138	req->type = EIO_CHOWN;
1809	req->ptr1 = SvPVbyte_nolen (req->sv1);	1139	req->ptr1 = SvPVbyte_nolen (req->sv1);
1810	}	1140	}
1811	else	1141	else
1812	{	1142	{
1813	req->type = REQ_FCHOWN;	1143	req->type = EIO_FCHOWN;
1814	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1144	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1815	}	1145	}
1816		1146
1817	REQ_SEND;	1147	REQ_SEND;
1818	}	1148	}
1819		1149
1820	void	1150	void
		1151	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1152	PPCODE:
		1153	{
		1154	dREQ;
		1155
		1156	req->type = EIO_READDIR;
		1157	req->sv1 = newSVsv (pathname);
		1158	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1159	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1160
		1161	if (flags & EIO_READDIR_DENTS)
		1162	req->int1 |= EIO_READDIR_CUSTOM2;
		1163
		1164	REQ_SEND;
		1165	}
		1166
		1167	void
1821	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1168	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1822	ALIAS:	1169	ALIAS:
1823	aio_unlink = REQ_UNLINK	1170	aio_unlink = EIO_UNLINK
1824	aio_rmdir = REQ_RMDIR	1171	aio_rmdir = EIO_RMDIR
1825	aio_readdir = REQ_READDIR	1172	aio_readdir = EIO_READDIR
1826	PPCODE:	1173	PPCODE:
1827	{	1174	{
1828	dREQ;	1175	dREQ;
1829		1176
1830	req->type = ix;	1177	req->type = ix;
…		…
1833		1180
1834	REQ_SEND;	1181	REQ_SEND;
1835	}	1182	}
1836		1183
1837	void	1184	void
1838	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1839	PPCODE:
1840	{
1841	dREQ;
1842
1843	req->type = REQ_MKDIR;
1844	req->sv1 = newSVsv (pathname);
1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1846	req->mode = mode;
1847
1848	REQ_SEND;
1849	}
1850
1851	void
1852	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1185	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1853	ALIAS:	1186	ALIAS:
1854	aio_link = REQ_LINK	1187	aio_link = EIO_LINK
1855	aio_symlink = REQ_SYMLINK	1188	aio_symlink = EIO_SYMLINK
1856	aio_rename = REQ_RENAME	1189	aio_rename = EIO_RENAME
1857	PPCODE:	1190	PPCODE:
1858	{	1191	{
1859	dREQ;	1192	dREQ;
1860		1193
1861	req->type = ix;	1194	req->type = ix;
1862	req->sv2 = newSVsv (oldpath);	1195	req->sv1 = newSVsv (oldpath);
		1196	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1197	req->sv2 = newSVsv (newpath);
1863	req->ptr2 = SvPVbyte_nolen (req->sv2);	1198	req->ptr2 = SvPVbyte_nolen (req->sv2);
1864	req->sv1 = newSVsv (newpath);
1865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1866		1199
1867	REQ_SEND;	1200	REQ_SEND;
1868	}	1201	}
1869		1202
1870	void	1203	void
1871	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1204	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1872	PPCODE:	1205	PPCODE:
1873	{	1206	{
1874	dREQ;	1207	dREQ;
1875		1208
1876	req->type = REQ_MKNOD;	1209	req->type = EIO_MKNOD;
1877	req->sv1 = newSVsv (pathname);	1210	req->sv1 = newSVsv (pathname);
1878	req->ptr1 = SvPVbyte_nolen (req->sv1);	1211	req->ptr1 = SvPVbyte_nolen (req->sv1);
1879	req->mode = (mode_t)mode;	1212	req->int2 = (mode_t)mode;
1880	req->offs = dev;	1213	req->offs = dev;
1881		1214
1882	REQ_SEND;	1215	REQ_SEND;
1883	}	1216	}
1884		1217
1885	void	1218	void
		1219	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1220	ALIAS:
		1221	aio_mtouch = EIO_MTOUCH
		1222	aio_msync = EIO_MSYNC
		1223	PROTOTYPE: $$$$;$
		1224	PPCODE:
		1225	{
		1226	STRLEN svlen;
		1227	UV len = SvUV (length);
		1228	char *svptr = SvPVbyte (data, svlen);
		1229
		1230	if (offset < 0)
		1231	offset += svlen;
		1232
		1233	if (offset < 0 || offset > svlen)
		1234	croak ("offset outside of scalar");
		1235
		1236	if (!SvOK (length) || len + offset > svlen)
		1237	len = svlen - offset;
		1238
		1239	{
		1240	dREQ;
		1241
		1242	req->type = ix;
		1243	req->size = len;
		1244	req->sv2 = SvREFCNT_inc (data);
		1245	req->ptr2 = (char *)svptr + offset;
		1246	req->int1 = flags;
		1247
		1248	REQ_SEND;
		1249	}
		1250	}
		1251
		1252	void
1886	aio_busy (double delay, SV *callback=&PL_sv_undef)	1253	aio_busy (double delay, SV *callback=&PL_sv_undef)
1887	PPCODE:	1254	PPCODE:
1888	{	1255	{
1889	dREQ;	1256	dREQ;
1890		1257
1891	req->type = REQ_BUSY;	1258	req->type = EIO_BUSY;
1892	req->nv1 = delay < 0. ? 0. : delay;	1259	req->nv1 = delay < 0. ? 0. : delay;
1893		1260
1894	REQ_SEND;	1261	REQ_SEND;
1895	}	1262	}
1896		1263
…		…
1899	PROTOTYPE: ;$	1266	PROTOTYPE: ;$
1900	PPCODE:	1267	PPCODE:
1901	{	1268	{
1902	dREQ;	1269	dREQ;
1903		1270
1904	req->type = REQ_GROUP;	1271	req->type = EIO_GROUP;
1905		1272
1906	req_send (req);	1273	req_submit (req);
1907	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1274	XPUSHs (req_sv (req, aio_grp_stash));
1908	}	1275	}
1909		1276
1910	void	1277	void
1911	aio_nop (SV *callback=&PL_sv_undef)	1278	aio_nop (SV *callback=&PL_sv_undef)
1912	ALIAS:	1279	ALIAS:
1913	aio_nop = REQ_NOP	1280	aio_nop = EIO_NOP
1914	aio_sync = REQ_SYNC	1281	aio_sync = EIO_SYNC
1915	PPCODE:	1282	PPCODE:
1916	{	1283	{
1917	dREQ;	1284	dREQ;
1918		1285
1919	req->type = ix;	1286	req->type = ix;
…		…
1923		1290
1924	int	1291	int
1925	aioreq_pri (int pri = 0)	1292	aioreq_pri (int pri = 0)
1926	PROTOTYPE: ;$	1293	PROTOTYPE: ;$
1927	CODE:	1294	CODE:
1928	RETVAL = next_pri - PRI_BIAS;	1295	RETVAL = next_pri;
1929	if (items > 0)	1296	if (items > 0)
1930	{	1297	{
1931	if (pri < PRI_MIN) pri = PRI_MIN;	1298	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1932	if (pri > PRI_MAX) pri = PRI_MAX;	1299	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1933	next_pri = pri + PRI_BIAS;	1300	next_pri = pri;
1934	}	1301	}
1935	OUTPUT:	1302	OUTPUT:
1936	RETVAL	1303	RETVAL
1937		1304
1938	void	1305	void
1939	aioreq_nice (int nice = 0)	1306	aioreq_nice (int nice = 0)
1940	CODE:	1307	CODE:
1941	nice = next_pri - nice;	1308	nice = next_pri - nice;
1942	if (nice < PRI_MIN) nice = PRI_MIN;	1309	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1943	if (nice > PRI_MAX) nice = PRI_MAX;	1310	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1944	next_pri = nice + PRI_BIAS;	1311	next_pri = nice;
1945		1312
1946	void	1313	void
1947	flush ()	1314	flush ()
1948	PROTOTYPE:	1315	PROTOTYPE:
1949	CODE:	1316	CODE:
1950	while (nreqs)	1317	while (eio_nreqs ())
1951	{	1318	{
1952	poll_wait ();	1319	poll_wait ();
1953	poll_cb ();	1320	poll_cb ();
1954	}	1321	}
1955		1322
…		…
1964		1331
1965	int	1332	int
1966	poll_fileno()	1333	poll_fileno()
1967	PROTOTYPE:	1334	PROTOTYPE:
1968	CODE:	1335	CODE:
1969	RETVAL = respipe [0];	1336	RETVAL = s_epipe_fd (&respipe);
1970	OUTPUT:	1337	OUTPUT:
1971	RETVAL	1338	RETVAL
1972		1339
1973	int	1340	int
1974	poll_cb(...)	1341	poll_cb(...)
…		…
1982	poll_wait()	1349	poll_wait()
1983	PROTOTYPE:	1350	PROTOTYPE:
1984	CODE:	1351	CODE:
1985	poll_wait ();	1352	poll_wait ();
1986		1353
1987	void
1988	setsig (int signum = SIGIO)
1989	PROTOTYPE: ;$
1990	CODE:
1991	{
1992	if (block_sig_level)
1993	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1994
1995	X_LOCK (reslock);
1996	main_tid = pthread_self ();
1997	main_sig = signum;
1998	X_UNLOCK (reslock);
1999
2000	if (main_sig && npending)
2001	pthread_kill (main_tid, main_sig);
2002	}
2003
2004	void
2005	aio_block (SV *cb)
2006	PROTOTYPE: &
2007	PPCODE:
2008	{
2009	int count;
2010
2011	block_sig ();
2012	PUSHMARK (SP);
2013	PUTBACK;
2014	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
2015	unblock_sig ();
2016
2017	if (SvTRUE (ERRSV))
2018	croak (0);
2019
2020	XSRETURN (count);
2021	}
2022
2023	int	1354	int
2024	nreqs()	1355	nreqs()
2025	PROTOTYPE:	1356	PROTOTYPE:
2026	CODE:	1357	CODE:
2027	RETVAL = nreqs;	1358	RETVAL = eio_nreqs ();
2028	OUTPUT:	1359	OUTPUT:
2029	RETVAL	1360	RETVAL
2030		1361
2031	int	1362	int
2032	nready()	1363	nready()
2033	PROTOTYPE:	1364	PROTOTYPE:
2034	CODE:	1365	CODE:
2035	RETVAL = get_nready ();	1366	RETVAL = eio_nready ();
2036	OUTPUT:	1367	OUTPUT:
2037	RETVAL	1368	RETVAL
2038		1369
2039	int	1370	int
2040	npending()	1371	npending()
2041	PROTOTYPE:	1372	PROTOTYPE:
2042	CODE:	1373	CODE:
2043	RETVAL = get_npending ();	1374	RETVAL = eio_npending ();
2044	OUTPUT:	1375	OUTPUT:
2045	RETVAL	1376	RETVAL
2046		1377
2047	int	1378	int
2048	nthreads()	1379	nthreads()
2049	PROTOTYPE:	1380	PROTOTYPE:
2050	CODE:	1381	CODE:
2051	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1382	RETVAL = eio_nthreads ();
2052	RETVAL = started;
2053	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2054	OUTPUT:	1383	OUTPUT:
2055	RETVAL	1384	RETVAL
2056		1385
		1386	int
		1387	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1388	PROTOTYPE: $$$$
		1389	CODE:
		1390	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1391	RETVAL = posix_fadvise (fh, offset, length, advice);
		1392	#else
		1393	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1394	#endif
		1395	OUTPUT:
		1396	RETVAL
		1397
		1398	ssize_t
		1399	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1400	PROTOTYPE: $$$$
		1401	CODE:
		1402	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1403	OUTPUT:
		1404	RETVAL
		1405
		1406	void
		1407	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1408	PROTOTYPE: $$$$$;$
		1409	PPCODE:
		1410	sv_unmagic (scalar, MMAP_MAGIC);
		1411	{
		1412	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1413	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1414	if (addr == (void *)-1)
		1415	XSRETURN_NO;
		1416
		1417	sv_force_normal (scalar);
		1418
		1419	/* we store the length in mg_obj, as namlen is I32 :/ */
		1420	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1421	->mg_obj = (SV *)length;
		1422
		1423	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1424
		1425	if (!(prot & PROT_WRITE))
		1426	SvREADONLY_on (scalar);
		1427
		1428	if (SvLEN (scalar))
		1429	Safefree (SvPVX (scalar));
		1430
		1431	SvPVX (scalar) = (char *)addr;
		1432	SvCUR_set (scalar, length);
		1433	SvLEN_set (scalar, 0);
		1434	SvPOK_only (scalar);
		1435
		1436	XSRETURN_YES;
		1437	}
		1438
		1439	void
		1440	munmap (SV *scalar)
		1441	PROTOTYPE: $
		1442	CODE:
		1443	sv_unmagic (scalar, MMAP_MAGIC);
		1444
		1445	int
		1446	madvise (SV *scalar, off_t offset, off_t length, IV advice)
		1447	PROTOTYPE: $$$$
		1448	CODE:
		1449	{
		1450	char *addr = SvPV_nolen (scalar) + offset;
		1451
		1452	if (!SvOK (ST (2)))
		1453	length = SvCUR (scalar) - offset;
		1454
		1455	if (addr >= SvEND (scalar) || length <= 0)
		1456	XSRETURN_EMPTY;
		1457
		1458	#if _XOPEN_SOURCE >= 600 && !NO_MADVISE
		1459	RETVAL = posix_madvise (addr, length, advice);
		1460	#else
		1461	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1462	#endif
		1463	}
		1464	OUTPUT:
		1465	RETVAL
		1466
		1467	int
		1468	mlockall (int flags)
		1469	PROTOTYPE: $
		1470	CODE:
		1471	#if _POSIX_MEMLOCK
		1472	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1473	extern int mallopt (int, int);
		1474	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1475	#endif
		1476	mlockall (flags);
		1477	#else
		1478	RETVAL = -1;
		1479	errno = ENOSYS;
		1480	#endif
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	int
		1485	munlockall ()
		1486	PROTOTYPE:
		1487	CODE:
		1488	#if _POSIX_MEMLOCK
		1489	munlockall ();
		1490	#else
		1491	RETVAL = -1;
		1492	errno = ENOSYS;
		1493	#endif
		1494	OUTPUT:
		1495	RETVAL
		1496
		1497	void _on_next_submit (SV *cb)
		1498	CODE:
		1499	SvREFCNT_dec (on_next_submit);
		1500	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1501
2057	PROTOTYPES: DISABLE	1502	PROTOTYPES: DISABLE
2058		1503
2059	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1504	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2060		1505
2061	void	1506	void
2062	cancel (aio_req_ornot req)	1507	cancel (aio_req_ornot req)
2063	CODE:	1508	CODE:
2064	req_cancel (req);	1509	eio_cancel (req);
2065		1510
2066	void	1511	void
2067	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1512	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2068	CODE:	1513	PPCODE:
		1514	{
		1515	if (GIMME_V != G_VOID)
		1516	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1517
		1518	if (items > 1)
		1519	{
		1520	SV *cb_cv =get_cb (callback);
		1521
2069	SvREFCNT_dec (req->callback);	1522	SvREFCNT_dec (req->callback);
2070	req->callback = newSVsv (callback);	1523	req->callback = SvREFCNT_inc (cb_cv);
		1524	}
		1525	}
2071		1526
2072	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1527	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2073		1528
2074	void	1529	void
2075	add (aio_req grp, ...)	1530	add (aio_req grp, ...)
2076	PPCODE:	1531	PPCODE:
2077	{	1532	{
2078	int i;	1533	int i;
2079	aio_req req;
2080
2081	if (main_sig && !block_sig_level)
2082	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2083		1534
2084	if (grp->int1 == 2)	1535	if (grp->int1 == 2)
2085	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1536	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2086		1537
2087	for (i = 1; i < items; ++i )	1538	for (i = 1; i < items; ++i )
2088	{	1539	{
		1540	aio_req req;
		1541
2089	if (GIMME_V != G_VOID)	1542	if (GIMME_V != G_VOID)
2090	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1543	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2091		1544
2092	req = SvAIO_REQ (ST (i));	1545	req = SvAIO_REQ (ST (i));
2093		1546
2094	if (req)	1547	if (req)
2095	{	1548	eio_grp_add (grp, req);
2096	++grp->size;
2097	req->grp = grp;
2098
2099	req->grp_prev = 0;
2100	req->grp_next = grp->grp_first;
2101
2102	if (grp->grp_first)
2103	grp->grp_first->grp_prev = req;
2104
2105	grp->grp_first = req;
2106	}
2107	}	1549	}
2108	}	1550	}
2109		1551
2110	void	1552	void
2111	cancel_subs (aio_req_ornot req)	1553	cancel_subs (aio_req_ornot req)
…		…
2120	AV *av;	1562	AV *av;
2121		1563
2122	grp->errorno = errno;	1564	grp->errorno = errno;
2123		1565
2124	av = newAV ();	1566	av = newAV ();
		1567	av_extend (av, items - 1);
2125		1568
2126	for (i = 1; i < items; ++i )	1569	for (i = 1; i < items; ++i )
2127	av_push (av, newSVsv (ST (i)));	1570	av_push (av, newSVsv (ST (i)));
2128		1571
2129	SvREFCNT_dec (grp->sv1);	1572	SvREFCNT_dec (grp->sv1);
…		…
2136	grp->errorno = errorno;	1579	grp->errorno = errorno;
2137		1580
2138	void	1581	void
2139	limit (aio_req grp, int limit)	1582	limit (aio_req grp, int limit)
2140	CODE:	1583	CODE:
2141	grp->int2 = limit;	1584	eio_grp_limit (grp, limit);
2142	aio_grp_feed (grp);
2143		1585
2144	void	1586	void
2145	feed (aio_req grp, SV *callback=&PL_sv_undef)	1587	feed (aio_req grp, SV *callback=&PL_sv_undef)
2146	CODE:	1588	CODE:
2147	{	1589	{
2148	SvREFCNT_dec (grp->sv2);	1590	SvREFCNT_dec (grp->sv2);
2149	grp->sv2 = newSVsv (callback);	1591	grp->sv2 = newSVsv (callback);
		1592	grp->feed = aio_grp_feed;
2150		1593
2151	if (grp->int2 <= 0)	1594	if (grp->int2 <= 0)
2152	grp->int2 = 2;	1595	grp->int2 = 2;
2153		1596
2154	aio_grp_feed (grp);	1597	eio_grp_limit (grp, grp->int2);
2155	}	1598	}
2156		1599

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