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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.112 by root, Tue Apr 1 19:40:47 2008 UTC vs.
Revision 1.167 by root, Sun May 9 20:49:52 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 ST_NODEV
		146	# define ST_NODEV 0
		147	#endif
		148	#ifndef ST_NOEXEC
		149	# define ST_NOEXEC 0
		150	#endif
		151	#ifndef ST_SYNCHRONOUS
		152	# define ST_SYNCHRONOUS 0
		153	#endif
		154	#ifndef ST_MANDLOCK
		155	# define ST_MANDLOCK 0
		156	#endif
		157	#ifndef ST_WRITE
		158	# define ST_WRITE 0
		159	#endif
		160	#ifndef ST_APPEND
		161	# define ST_APPEND 0
		162	#endif
		163	#ifndef ST_IMMUTABLE
		164	# define ST_IMMUTABLE 0
		165	#endif
		166	#ifndef ST_NOATIME
		167	# define ST_NOATIME 0
		168	#endif
		169	#ifndef ST_NODIRATIME
		170	# define ST_NODIRATIME 0
		171	#endif
		172	#ifndef ST_RELATIME
		173	# define ST_RELATIME 0
		174	#endif
		175
		176	#ifndef MCL_CURRENT
		177	# define MCL_CURRENT 0
		178	#endif
		179	#ifndef MCL_FUTURE
		180	# define MCL_FUTURE 0
		181	#endif
		182
		183	#ifndef MAP_ANONYMOUS
		184	# ifdef MAP_ANON
		185	# define MAP_ANONYMOUS MAP_ANON
		186	# else
		187	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		188	# endif
		189	#endif
		190	#ifndef MAP_HUGETLB
		191	# define MAP_HUGETLB 0
		192	#endif
		193	#ifndef MAP_LOCKED
		194	# define MAP_LOCKED 0
		195	#endif
		196	#ifndef MAP_NORESERVE
		197	# define MAP_NORESERVE 0
		198	#endif
		199	#ifndef MAP_POPULATE
		200	# define MAP_POPULATE 0
		201	#endif
		202	#ifndef MAP_NONBLOCK
		203	# define MAP_NONBLOCK 0
		204	#endif
		205
		206	#ifndef PAGESIZE
		207	# define PAGESIZE sysconf (_SC_PAGESIZE)
		208	#endif
		209
		210	static int req_invoke (eio_req *req);
		211	#define EIO_FINISH(req) req_invoke (req)
		212	static void req_destroy (eio_req *grp);
		213	#define EIO_DESTROY(req) req_destroy (req)
113		214
114	enum {	215	enum {
115	REQ_QUIT,	216	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	};	217	};
131		218
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	219	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		220
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;	221	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	222	typedef eio_req *aio_req_ornot;
168		223
169	enum {	224	static SV *on_next_submit;
170	PRI_MIN = -4,	225	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	226	static int max_outstanding;
172		227
173	DEFAULT_PRI = 0,	228	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		229
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);	230	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	231	static void req_cancel (aio_req req);
378		232
		233	static void want_poll (void)
		234	{
		235	/* write a dummy byte to the pipe so fh becomes ready */
		236	s_epipe_signal (&respipe);
		237	}
		238
		239	static void done_poll (void)
		240	{
		241	/* read any signals sent by the worker threads */
		242	s_epipe_drain (&respipe);
		243	}
		244
379	/* must be called at most once */	245	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	246	static SV *req_sv (aio_req req, HV *stash)
381	{	247	{
382	if (!req->self)	248	if (!req->self)
383	{	249	{
384	req->self = (SV *)newHV ();	250	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	251	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	252	}
387		253
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	254	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	255	}
390		256
391	static aio_req SvAIO_REQ (SV *sv)	257	static aio_req SvAIO_REQ (SV *sv)
392	{	258	{
393	MAGIC *mg;	259	MAGIC *mg;
394		260
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	261	if (!SvROK (sv)
		262	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		263	&& SvSTASH (SvRV (sv)) != aio_req_stash
		264	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	265	croak ("object of class IO::AIO::REQ expected");
397		266
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	267	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		268
400	return mg ? (aio_req)mg->mg_ptr : 0;	269	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	270	}
402		271
403	static void aio_grp_feed (aio_req grp)	272	static void aio_grp_feed (aio_req grp)
404	{	273	{
405	block_sig ();	274	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	275	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	276	dSP;
414		277
415	ENTER;	278	ENTER;
416	SAVETMPS;	279	SAVETMPS;
417	PUSHMARK (SP);	280	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	281	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	282	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	283	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	284	SPAGAIN;
422	FREETMPS;	285	FREETMPS;
423	LEAVE;	286	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	}	287	}
434
435	unblock_sig ();
436	}	288	}
437		289
438	static void aio_grp_dec (aio_req grp)	290	static void req_submit (eio_req *req)
439	{	291	{
440	--grp->size;	292	eio_submit (req);
441		293
442	/* call feeder, if applicable */	294	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	295	{
448	block_sig ();	296	dSP;
		297	SV *cb = sv_2mortal (on_next_submit);
449		298
450	if (!req_invoke (grp))	299	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		300
457	req_destroy (grp);	301	PUSHMARK (SP);
458	unblock_sig ();	302	PUTBACK;
		303	call_sv (cb, G_DISCARD | G_EVAL);
459	}	304	}
460	}	305	}
461		306
462	static int req_invoke (aio_req req)	307	static int req_invoke (eio_req *req)
463	{	308	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	309	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	310	SvREADONLY_off (req->sv2);
468		311
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	312	if (!EIO_CANCELLED (req) && req->callback)
470	{	313	{
		314	dSP;
		315	static SV *sv_result_cache; /* caches the result integer SV */
		316	SV *sv_result;
		317
471	ENTER;	318	ENTER;
472	SAVETMPS;	319	SAVETMPS;
473	PUSHMARK (SP);	320	PUSHMARK (SP);
474	EXTEND (SP, 1);	321	EXTEND (SP, 1);
475		322
		323	/* do not recreate the result IV from scratch each time */
		324	if (expect_true (sv_result_cache))
		325	{
		326	sv_result = sv_result_cache; sv_result_cache = 0;
		327	SvIV_set (sv_result, req->result);
		328	}
		329	else
		330	{
		331	sv_result = newSViv (req->result);
		332	SvREADONLY_on (sv_result);
		333	}
		334
476	switch (req->type)	335	switch (req->type)
477	{	336	{
478	case REQ_READDIR:	337	case EIO_READDIR:
479	{	338	{
480	SV *rv = &PL_sv_undef;	339	SV *rv = &PL_sv_undef;
481		340
482	if (req->result >= 0)	341	if (req->result >= 0)
483	{	342	{
484	int i;	343	int i;
485	char *buf = req->ptr2;	344	char *names = (char *)req->ptr2;
		345	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	346	AV *av = newAV ();
487		347
488	av_extend (av, req->result - 1);	348	av_extend (av, req->result - 1);
489		349
490	for (i = 0; i < req->result; ++i)	350	for (i = 0; i < req->result; ++i)
491	{	351	{
492	SV *sv = newSVpv (buf, 0);	352	if (req->int1 & EIO_READDIR_DENTS)
		353	{
		354	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		355
		356	if (req->int1 & EIO_READDIR_CUSTOM2)
		357	{
		358	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		359	AV *avent = newAV ();
		360
		361	av_extend (avent, 2);
		362
		363	if (!sv_type [ent->type])
		364	{
		365	sv_type [ent->type] = newSViv (ent->type);
		366	SvREADONLY_on (sv_type [ent->type]);
		367	}
		368
		369	av_store (avent, 0, namesv);
		370	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		371	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		372
		373	av_store (av, i, newRV_noinc ((SV *)avent));
		374	}
		375	else
494	av_store (av, i, sv);	376	av_store (av, i, namesv);
		377
		378	++ent;
		379	}
		380	else
		381	{
		382	SV *name = newSVpv (names, 0);
		383	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	384	names += SvCUR (name) + 1;
		385	}
496	}	386	}
497		387
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	388	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	389	}
500		390
501	PUSHs (rv);	391	PUSHs (rv);
		392
		393	if (req->int1 & EIO_READDIR_CUSTOM1)
		394	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	395	}
503	break;	396	break;
504		397
505	case REQ_OPEN:	398	case EIO_OPEN:
506	{	399	{
507	/* convert fd to fh */	400	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	401	SV *fh = &PL_sv_undef;
509		402
510	if (req->result >= 0)	403	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	405	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	406	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	407	char sym [64];
515	int symlen;	408	int symlen;
516		409
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	410	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	411	gv_init (gv, aio_stash, sym, symlen, 0);
519		412
520	symlen = snprintf (	413	symlen = snprintf (
521	sym,	414	sym,
522	sizeof (sym),	415	sizeof (sym),
523	"%s&=%d",	416	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	417	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	418	(int)req->result
526	);	419	);
527		420
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	421	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	422	fh = (SV *)gv;
530	}	423	}
531		424
532	PUSHs (fh);	425	PUSHs (fh);
533	}	426	}
534	break;	427	break;
535		428
		429	case EIO_STATVFS:
		430	case EIO_FSTATVFS:
		431	{
		432	SV *rv = &PL_sv_undef;
		433
		434	if (req->result >= 0)
		435	{
		436	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		437	HV *hv = newHV ();
		438
		439	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		440
		441	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		442	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		443	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		444	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		445	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		446	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		447	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		448	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		449	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		450	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		451	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		452	}
		453
		454	PUSHs (rv);
		455	}
		456
		457	break;
		458
536	case REQ_GROUP:	459	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	460	req->int1 = 2; /* mark group as finished */
538		461
539	if (req->sv1)	462	if (req->sv1)
540	{	463	{
541	int i;	464	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	468	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	469	PUSHs (*av_fetch (av, i, 0));
547	}	470	}
548	break;	471	break;
549		472
550	case REQ_NOP:	473	case EIO_NOP:
551	case REQ_BUSY:	474	case EIO_BUSY:
552	break;	475	break;
553		476
554	case REQ_READLINK:	477	case EIO_READLINK:
555	if (req->result > 0)	478	if (req->result > 0)
556	{	479	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;	480	break;
562		481
563	case REQ_STAT:	482	case EIO_STAT:
564	case REQ_LSTAT:	483	case EIO_LSTAT:
565	case REQ_FSTAT:	484	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	485	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	486	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	487	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	488	PUSHs (sv_result);
570	break;	489	break;
571		490
572	case REQ_READ:	491	case EIO_READ:
		492	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	493	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	494	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	495	SvPOK_only (req->sv2);
		496	SvSETMAGIC (req->sv2);
		497	PUSHs (sv_result);
		498	}
576	break;	499	break;
577		500
		501	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		502	if (req->result > 0)
		503	SvIV_set (sv_result, 0);
		504	/* FALLTHROUGH */
		505
578	default:	506	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	507	PUSHs (sv_result);
580	break;	508	break;
581	}	509	}
582		510
583	errno = req->errorno;	511	errno = req->errorno;
584		512
585	PUTBACK;	513	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	514	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	515	SPAGAIN;
588		516
		517	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		518	SvREFCNT_dec (sv_result);
		519	else
		520	sv_result_cache = sv_result;
		521
589	FREETMPS;	522	FREETMPS;
590	LEAVE;	523	LEAVE;
591		524
592	PUTBACK;	525	PUTBACK;
593	}	526	}
594		527
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);	528	return !!SvTRUE (ERRSV);
610	}	529	}
611		530
612	static void req_destroy (aio_req req)	531	static void req_destroy (aio_req req)
613	{	532	{
614	if (req->self)	533	if (req->self)
…		…
619		538
620	SvREFCNT_dec (req->sv1);	539	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	540	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	541	SvREFCNT_dec (req->callback);
623		542
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	543	Safefree (req);
628	}	544	}
629		545
630	static void req_cancel_subs (aio_req grp)	546	static void req_cancel_subs (aio_req grp)
631	{	547	{
632	aio_req sub;	548	aio_req sub;
633		549
634	if (grp->type != REQ_GROUP)	550	if (grp->type != EIO_GROUP)
635	return;	551	return;
636		552
637	SvREFCNT_dec (grp->sv2);	553	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	554	grp->sv2 = 0;
639		555
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	556	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	557	}
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		558
657	static void	559	static void
658	create_respipe (void)	560	create_respipe (void)
659	{	561	{
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))	562	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	563	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	}	564	}
789		565
790	static void poll_wait (void)	566	static void poll_wait (void)
791	{	567	{
792	fd_set rfd;
793
794	while (nreqs)	568	while (eio_nreqs ())
795	{	569	{
796	int size;	570	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	571
		572	X_LOCK (reslock);
798	size = res_queue.size;	573	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	574	X_UNLOCK (reslock);
800		575
801	if (size)	576	if (size)
802	return;	577	return;
803		578
804	maybe_start_thread ();	579	etp_maybe_start_thread ();
805		580
806	FD_ZERO (&rfd);	581	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	582	}
811	}	583	}
812		584
813	static int poll_cb (void)	585	static int poll_cb (void)
814	{	586	{
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 (;;)	587	for (;;)
828	{	588	{
829	for (;;)	589	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		590
833	X_LOCK (reslock);	591	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);	592	croak (0);
868	}
869		593
870	count++;	594	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	595	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		596
890	poll_wait ();	597	poll_wait ();
891
892	++maxreqs;
893	}	598	}
		599	}
894		600
895	unblock_sig ();	601	static void atfork_child (void)
896	return count;	602	{
		603	create_respipe ();
897	}	604	}
898		605
899	/*****************************************************************************/	606	/*****************************************************************************/
900	/* work around various missing functions */
901		607
902	#if !HAVE_PREADWRITE	608	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	609	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	610	# 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	611	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		612
1080	if (res < 0	613	#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		614
1091	res = 0;	615	static int
		616	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		617	{
		618	int old_errno = errno;
		619	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		620	errno = old_errno;
1092		621
1093	while (count)	622	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		623
1099	if (cnt <= 0)	624	SvREADONLY_off (sv);
1100	{	625	SvCUR_set (sv, 0);
1101	if (cnt && !res) res = -1;	626	SvLEN_set (sv, 0);
1102	break;	627	SvPVX (sv) = 0;
1103	}	628	SvOK_off (sv);
1104		629
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;	630	return 0;
1120	}	631	}
1121		632
1122	/* read a full directory */	633	static MGVTBL mmap_vtbl = {
1123	static void scandir_ (aio_req req, worker *self)	634	0, 0, 0, 0, mmap_free
1124	{	635	};
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		636
1183	/*****************************************************************************/	637	/*****************************************************************************/
1184		638
1185	X_THREAD_PROC (aio_proc)	639	static SV *
		640	get_cb (SV *cb_sv)
1186	{	641	{
1187	aio_req req;	642	SvGETMAGIC (cb_sv);
1188	struct timespec ts;	643	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1189	worker *self = (worker *)thr_arg;
1190
1191	/* try to distribute timeouts somewhat randomly */
1192	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1193
1194	for (;;)
1195	{
1196	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1197
1198	X_LOCK (reqlock);
1199
1200	for (;;)
1201	{
1202	self->req = req = reqq_shift (&req_queue);
1203
1204	if (req)
1205	break;
1206
1207	++idle;
1208
1209	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1210	== ETIMEDOUT)
1211	{
1212	if (idle > max_idle)
1213	{
1214	--idle;
1215	X_UNLOCK (reqlock);
1216	X_LOCK (wrklock);
1217	--started;
1218	X_UNLOCK (wrklock);
1219	goto quit;
1220	}
1221
1222	/* we are allowed to idle, so do so without any timeout */
1223	X_COND_WAIT (reqwait, reqlock);
1224	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1225	}
1226
1227	--idle;
1228	}
1229
1230	--nready;
1231
1232	X_UNLOCK (reqlock);
1233
1234	errno = 0; /* strictly unnecessary */
1235
1236	if (!(req->flags & FLAG_CANCELLED))
1237	switch (req->type)
1238	{
1239	case REQ_READ: req->result = req->offs >= 0
1240	? pread (req->int1, req->ptr1, req->size, req->offs)
1241	: read (req->int1, req->ptr1, req->size); break;
1242	case REQ_WRITE: req->result = req->offs >= 0
1243	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1244	: write (req->int1, req->ptr1, req->size); break;
1245
1246	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1247	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1248
1249	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1252
1253	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1254	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1255	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1256	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1257	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1258	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1259
1260	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1261	case REQ_CLOSE: req->result = close (req->int1); break;
1262	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1263	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1264	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1265	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1266	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1267	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1268	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1269	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1270
1271	case REQ_SYNC: req->result = 0; sync (); break;
1272	case REQ_FSYNC: req->result = fsync (req->int1); break;
1273	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1274
1275	case REQ_READDIR: scandir_ (req, self); break;
1276
1277	case REQ_BUSY:
1278	#ifdef _WIN32
1279	Sleep (req->nv1 * 1000.);
1280	#else
1281	{
1282	struct timeval tv;
1283
1284	tv.tv_sec = req->nv1;
1285	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1286
1287	req->result = select (0, 0, 0, 0, &tv);
1288	}
1289	#endif
1290	break;
1291
1292	case REQ_UTIME:
1293	case REQ_FUTIME:
1294	{
1295	struct timeval tv[2];
1296	struct timeval *times;
1297
1298	if (req->nv1 != -1. || req->nv2 != -1.)
1299	{
1300	tv[0].tv_sec = req->nv1;
1301	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1302	tv[1].tv_sec = req->nv2;
1303	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1304
1305	times = tv;
1306	}
1307	else
1308	times = 0;
1309
1310
1311	req->result = req->type == REQ_FUTIME
1312	? futimes (req->int1, times)
1313	: utimes (req->ptr1, times);
1314	}
1315
1316	case REQ_GROUP:
1317	case REQ_NOP:
1318	break;
1319
1320	case REQ_QUIT:
1321	goto quit;
1322
1323	default:
1324	req->result = -1;
1325	break;
1326	}
1327
1328	req->errorno = errno;
1329
1330	X_LOCK (reslock);
1331
1332	++npending;
1333
1334	if (!reqq_push (&res_queue, req))
1335	{
1336	/* write a dummy byte to the pipe so fh becomes ready */
1337	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1338
1339	/* optionally signal the main thread asynchronously */
1340	if (main_sig)
1341	pthread_kill (main_tid, main_sig);
1342	}
1343
1344	self->req = 0;
1345	worker_clear (self);
1346
1347	X_UNLOCK (reslock);
1348	}
1349
1350	quit:
1351	X_LOCK (wrklock);
1352	worker_free (self);
1353	X_UNLOCK (wrklock);
1354
1355	return 0;
1356	}
1357
1358	/*****************************************************************************/
1359
1360	static void atfork_prepare (void)
1361	{
1362	X_LOCK (wrklock);
1363	X_LOCK (reqlock);
1364	X_LOCK (reslock);
1365	#if !HAVE_PREADWRITE
1366	X_LOCK (preadwritelock);
1367	#endif
1368	#if !HAVE_READDIR_R
1369	X_LOCK (readdirlock);
1370	#endif
1371	}
1372
1373	static void atfork_parent (void)
1374	{
1375	#if !HAVE_READDIR_R
1376	X_UNLOCK (readdirlock);
1377	#endif
1378	#if !HAVE_PREADWRITE
1379	X_UNLOCK (preadwritelock);
1380	#endif
1381	X_UNLOCK (reslock);
1382	X_UNLOCK (reqlock);
1383	X_UNLOCK (wrklock);
1384	}
1385
1386	static void atfork_child (void)
1387	{
1388	aio_req prv;
1389
1390	while (prv = reqq_shift (&req_queue))
1391	req_destroy (prv);
1392
1393	while (prv = reqq_shift (&res_queue))
1394	req_destroy (prv);
1395
1396	while (wrk_first.next != &wrk_first)
1397	{
1398	worker *wrk = wrk_first.next;
1399
1400	if (wrk->req)
1401	req_destroy (wrk->req);
1402
1403	worker_clear (wrk);
1404	worker_free (wrk);
1405	}
1406
1407	started = 0;
1408	idle = 0;
1409	nreqs = 0;
1410	nready = 0;
1411	npending = 0;
1412
1413	create_respipe ();
1414
1415	atfork_parent ();
1416	}	644	}
1417		645
1418	#define dREQ \	646	#define dREQ \
		647	SV *cb_cv; \
1419	aio_req req; \	648	aio_req req; \
1420	int req_pri = next_pri; \	649	int req_pri = next_pri; \
1421	next_pri = DEFAULT_PRI + PRI_BIAS; \	650	next_pri = EIO_PRI_DEFAULT; \
1422	\	651	\
1423	if (SvOK (callback) && !SvROK (callback)) \	652	cb_cv = get_cb (callback); \
1424	croak ("callback must be undef or of reference type"); \
1425	\	653	\
1426	Newz (0, req, 1, aio_cb); \	654	Newz (0, req, 1, eio_req); \
1427	if (!req) \	655	if (!req) \
1428	croak ("out of memory during aio_req allocation"); \	656	croak ("out of memory during eio_req allocation"); \
1429	\	657	\
1430	req->callback = newSVsv (callback); \	658	req->callback = SvREFCNT_inc (cb_cv); \
1431	req->pri = req_pri	659	req->pri = req_pri
1432		660
1433	#define REQ_SEND \	661	#define REQ_SEND \
		662	PUTBACK; \
1434	req_send (req); \	663	req_submit (req); \
		664	SPAGAIN; \
1435	\	665	\
1436	if (GIMME_V != G_VOID) \	666	if (GIMME_V != G_VOID) \
1437	XPUSHs (req_sv (req, AIO_REQ_KLASS));	667	XPUSHs (req_sv (req, aio_req_stash));
1438		668
1439	MODULE = IO::AIO PACKAGE = IO::AIO	669	MODULE = IO::AIO PACKAGE = IO::AIO
1440		670
1441	PROTOTYPES: ENABLE	671	PROTOTYPES: ENABLE
1442		672
1443	BOOT:	673	BOOT:
1444	{	674	{
1445	stash = gv_stashpv ("IO::AIO", 1);	675	static const struct {
1446		676	const char *name;
1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	677	IV iv;
1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	678	} *civ, const_iv[] = {
1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	679	# define const_niv(name, value) { # name, (IV) value },
1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	680	# define const_iv(name) { # name, (IV) name },
1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	681	# define const_eio(name) { # name, (IV) EIO_ ## name },
		682	const_iv (EXDEV)
		683	const_iv (ENOSYS)
		684	const_iv (O_RDONLY)
		685	const_iv (O_WRONLY)
		686	const_iv (O_RDWR)
		687	const_iv (O_CREAT)
		688	const_iv (O_TRUNC)
		689	const_iv (O_EXCL)
		690	const_iv (O_APPEND)
1452	#ifdef _WIN32	691	#ifndef _WIN32
1453	X_MUTEX_CHECK (wrklock);	692	const_iv (S_IFIFO)
1454	X_MUTEX_CHECK (reslock);
1455	X_MUTEX_CHECK (reqlock);
1456	X_MUTEX_CHECK (reqwait);
1457	X_MUTEX_CHECK (preadwritelock);
1458	X_MUTEX_CHECK (readdirlock);
1459
1460	X_COND_CHECK (reqwait);
1461	#else
1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464	#endif	693	#endif
		694	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		695	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		696	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		697	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		698	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		699	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1465		700
		701	const_iv (ST_RDONLY)
		702	const_iv (ST_NOSUID)
		703	const_iv (ST_NODEV)
		704	const_iv (ST_NOEXEC)
		705	const_iv (ST_SYNCHRONOUS)
		706	const_iv (ST_MANDLOCK)
		707	const_iv (ST_WRITE)
		708	const_iv (ST_APPEND)
		709	const_iv (ST_IMMUTABLE)
		710	const_iv (ST_NOATIME)
		711	const_iv (ST_NODIRATIME)
		712	const_iv (ST_RELATIME)
		713
		714	const_iv (PROT_EXEC)
		715	const_iv (PROT_NONE)
		716	const_iv (PROT_READ)
		717	const_iv (PROT_WRITE)
		718
		719	/*const_iv (MAP_FIXED)*/
		720	const_iv (MAP_PRIVATE)
		721	const_iv (MAP_SHARED)
		722	const_iv (MAP_ANONYMOUS)
		723
		724	/* linuxish */
		725	const_iv (MAP_HUGETLB)
		726	const_iv (MAP_LOCKED)
		727	const_iv (MAP_NORESERVE)
		728	const_iv (MAP_POPULATE)
		729	const_iv (MAP_NONBLOCK)
		730
		731	const_iv (MCL_FUTURE)
		732	const_iv (MCL_CURRENT)
		733
		734	const_eio (MS_ASYNC)
		735	const_eio (MS_INVALIDATE)
		736	const_eio (MS_SYNC)
		737
		738	const_eio (MT_MODIFY)
		739
		740	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		741	const_eio (SYNC_FILE_RANGE_WRITE)
		742	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		743
		744	const_eio (READDIR_DENTS)
		745	const_eio (READDIR_DIRS_FIRST)
		746	const_eio (READDIR_STAT_ORDER)
		747	const_eio (READDIR_FOUND_UNKNOWN)
		748
		749	const_eio (DT_UNKNOWN)
		750	const_eio (DT_FIFO)
		751	const_eio (DT_CHR)
		752	const_eio (DT_DIR)
		753	const_eio (DT_BLK)
		754	const_eio (DT_REG)
		755	const_eio (DT_LNK)
		756	const_eio (DT_SOCK)
		757	const_eio (DT_WHT)
		758	};
		759
		760	aio_stash = gv_stashpv ("IO::AIO" , 1);
		761	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		762	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		763
		764	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		765	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		766
		767	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		768
1466	create_respipe ();	769	create_respipe ();
1467		770
1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	771	if (eio_init (want_poll, done_poll) < 0)
		772	croak ("IO::AIO: unable to initialise eio library");
		773
		774	/* atfork child called in fifo order, so before eio's handler */
		775	X_THREAD_ATFORK (0, 0, atfork_child);
1469	}	776	}
1470		777
1471	void	778	void
1472	max_poll_reqs (int nreqs)	779	max_poll_reqs (int nreqs)
1473	PROTOTYPE: $	780	PROTOTYPE: $
1474	CODE:	781	CODE:
1475	max_poll_reqs = nreqs;	782	eio_set_max_poll_reqs (nreqs);
1476		783
1477	void	784	void
1478	max_poll_time (double nseconds)	785	max_poll_time (double nseconds)
1479	PROTOTYPE: $	786	PROTOTYPE: $
1480	CODE:	787	CODE:
1481	max_poll_time = nseconds * AIO_TICKS;	788	eio_set_max_poll_time (nseconds);
1482		789
1483	void	790	void
1484	min_parallel (int nthreads)	791	min_parallel (int nthreads)
1485	PROTOTYPE: $	792	PROTOTYPE: $
		793	CODE:
		794	eio_set_min_parallel (nthreads);
1486		795
1487	void	796	void
1488	max_parallel (int nthreads)	797	max_parallel (int nthreads)
1489	PROTOTYPE: $	798	PROTOTYPE: $
		799	CODE:
		800	eio_set_max_parallel (nthreads);
1490		801
1491	void	802	void
1492	max_idle (int nthreads)	803	max_idle (int nthreads)
1493	PROTOTYPE: $	804	PROTOTYPE: $
1494	CODE:	805	CODE:
1495	set_max_idle (nthreads);	806	eio_set_max_idle (nthreads);
1496		807
1497	int	808	void
1498	max_outstanding (int maxreqs)	809	max_outstanding (int maxreqs)
1499	PROTOTYPE: $	810	PROTOTYPE: $
1500	CODE:	811	CODE:
1501	RETVAL = max_outstanding;
1502	max_outstanding = maxreqs;	812	max_outstanding = maxreqs;
1503	OUTPUT:
1504	RETVAL
1505		813
1506	void	814	void
1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	815	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1508	PROTOTYPE: $$$;$	816	PROTOTYPE: $$$;$
1509	PPCODE:	817	PPCODE:
1510	{	818	{
1511	dREQ;	819	dREQ;
1512		820
1513	req->type = REQ_OPEN;	821	req->type = EIO_OPEN;
1514	req->sv1 = newSVsv (pathname);	822	req->sv1 = newSVsv (pathname);
1515	req->ptr1 = SvPVbyte_nolen (req->sv1);	823	req->ptr1 = SvPVbyte_nolen (req->sv1);
1516	req->int1 = flags;	824	req->int1 = flags;
1517	req->mode = mode;	825	req->int2 = mode;
1518		826
1519	REQ_SEND;	827	REQ_SEND;
1520	}	828	}
1521		829
1522	void	830	void
1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	831	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $;$	832	PROTOTYPE: $;$
1525	ALIAS:	833	ALIAS:
1526	aio_fsync = REQ_FSYNC	834	aio_fsync = EIO_FSYNC
1527	aio_fdatasync = REQ_FDATASYNC	835	aio_fdatasync = EIO_FDATASYNC
1528	PPCODE:	836	PPCODE:
1529	{	837	{
		838	int fd = s_fileno_croak (fh, 0);
1530	dREQ;	839	dREQ;
1531		840
1532	req->type = ix;	841	req->type = ix;
1533	req->sv1 = newSVsv (fh);	842	req->sv1 = newSVsv (fh);
1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	843	req->int1 = fd;
1535		844
1536	REQ_SEND (req);	845	REQ_SEND (req);
1537	}	846	}
1538		847
1539	int	848	void
1540	_dup (int fd)	849	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1541	PROTOTYPE: $	850	PROTOTYPE: $$$$;$
1542	CODE:	851	PPCODE:
1543	RETVAL = dup (fd);	852	{
1544	OUTPUT:	853	int fd = s_fileno_croak (fh, 0);
1545	RETVAL	854	dREQ;
1546		855
		856	req->type = EIO_SYNC_FILE_RANGE;
		857	req->sv1 = newSVsv (fh);
		858	req->int1 = fd;
		859	req->offs = offset;
		860	req->size = nbytes;
		861	req->int2 = flags;
		862
		863	REQ_SEND (req);
		864	}
		865
1547	void	866	void
1548	_aio_close (int fd, SV *callback=&PL_sv_undef)	867	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1549	PROTOTYPE: $;$	868	PROTOTYPE: $;$
1550	PPCODE:	869	PPCODE:
1551	{	870	{
		871	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		872	int fd = s_fileno_croak (fh, 0);
1552	dREQ;	873	dREQ;
1553		874
		875	if (close_pipe < 0)
		876	{
		877	int pipefd [2];
		878
		879	if (pipe (pipefd) < 0
		880	|| close (pipefd [1]) < 0
		881	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		882	abort (); /*D*/
		883
		884	close_pipe = pipefd [0];
		885	}
		886
1554	req->type = REQ_CLOSE;	887	req->type = EIO_DUP2;
		888	req->int1 = close_pipe;
		889	req->sv2 = newSVsv (fh);
1555	req->int1 = fd;	890	req->int2 = fd;
1556		891
1557	REQ_SEND (req);	892	REQ_SEND (req);
1558	}	893	}
1559		894
1560	void	895	void
1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	896	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1562	ALIAS:	897	ALIAS:
1563	aio_read = REQ_READ	898	aio_read = EIO_READ
1564	aio_write = REQ_WRITE	899	aio_write = EIO_WRITE
1565	PROTOTYPE: $$$$$;$	900	PROTOTYPE: $$$$$;$
1566	PPCODE:	901	PPCODE:
1567	{	902	{
1568	STRLEN svlen;	903	STRLEN svlen;
		904	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1569	char *svptr = SvPVbyte (data, svlen);	905	char *svptr = SvPVbyte (data, svlen);
1570	UV len = SvUV (length);	906	UV len = SvUV (length);
1571		907
1572	SvUPGRADE (data, SVt_PV);
1573	SvPOK_on (data);
1574
1575	if (dataoffset < 0)	908	if (dataoffset < 0)
1576	dataoffset += svlen;	909	dataoffset += svlen;
1577		910
1578	if (dataoffset < 0 || dataoffset > svlen)	911	if (dataoffset < 0 || dataoffset > svlen)
1579	croak ("dataoffset outside of data scalar");	912	croak ("dataoffset outside of data scalar");
1580		913
1581	if (ix == REQ_WRITE)	914	if (ix == EIO_WRITE)
1582	{	915	{
1583	/* write: check length and adjust. */	916	/* write: check length and adjust. */
1584	if (!SvOK (length) || len + dataoffset > svlen)	917	if (!SvOK (length) || len + dataoffset > svlen)
1585	len = svlen - dataoffset;	918	len = svlen - dataoffset;
1586	}	919	}
1587	else	920	else
1588	{	921	{
1589	/* read: grow scalar as necessary */	922	/* read: check type and grow scalar as necessary */
		923	SvUPGRADE (data, SVt_PV);
1590	svptr = SvGROW (data, len + dataoffset + 1);	924	svptr = SvGROW (data, len + dataoffset + 1);
1591	}	925	}
1592		926
1593	if (len < 0)
1594	croak ("length must not be negative");
1595
1596	{	927	{
1597	dREQ;	928	dREQ;
1598		929
1599	req->type = ix;	930	req->type = ix;
1600	req->sv1 = newSVsv (fh);	931	req->sv1 = newSVsv (fh);
1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	932	req->int1 = fd;
1602	: IoOFP (sv_2io (fh)));
1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	933	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604	req->size = len;	934	req->size = len;
1605	req->sv2 = SvREFCNT_inc (data);	935	req->sv2 = SvREFCNT_inc (data);
1606	req->ptr1 = (char *)svptr + dataoffset;	936	req->ptr2 = (char *)svptr + dataoffset;
1607	req->stroffset = dataoffset;	937	req->stroffset = dataoffset;
1608		938
1609	if (!SvREADONLY (data))	939	if (!SvREADONLY (data))
1610	{	940	{
1611	SvREADONLY_on (data);	941	SvREADONLY_on (data);
…		…
1622	PPCODE:	952	PPCODE:
1623	{	953	{
1624	SV *data;	954	SV *data;
1625	dREQ;	955	dREQ;
1626		956
1627	data = newSV (NAME_MAX);
1628	SvPOK_on (data);
1629
1630	req->type = REQ_READLINK;	957	req->type = EIO_READLINK;
1631	req->sv1 = newSVsv (path);	958	req->sv1 = newSVsv (path);
1632	req->ptr2 = SvPVbyte_nolen (req->sv1);	959	req->ptr1 = SvPVbyte_nolen (req->sv1);
1633	req->sv2 = data;
1634	req->ptr1 = SvPVbyte_nolen (data);
1635		960
1636	REQ_SEND;	961	REQ_SEND;
1637	}	962	}
1638		963
1639	void	964	void
1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	965	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1641	PROTOTYPE: $$$$;$	966	PROTOTYPE: $$$$;$
1642	PPCODE:	967	PPCODE:
1643	{	968	{
		969	int ifd = s_fileno_croak (in_fh , 0);
		970	int ofd = s_fileno_croak (out_fh, 1);
1644	dREQ;	971	dREQ;
1645		972
1646	req->type = REQ_SENDFILE;	973	req->type = EIO_SENDFILE;
1647	req->sv1 = newSVsv (out_fh);	974	req->sv1 = newSVsv (out_fh);
1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	975	req->int1 = ofd;
1649	req->sv2 = newSVsv (in_fh);	976	req->sv2 = newSVsv (in_fh);
1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	977	req->int2 = ifd;
1651	req->offs = SvVAL64 (in_offset);	978	req->offs = in_offset;
1652	req->size = length;	979	req->size = length;
1653		980
1654	REQ_SEND;	981	REQ_SEND;
1655	}	982	}
1656		983
1657	void	984	void
1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	985	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1659	PROTOTYPE: $$$;$	986	PROTOTYPE: $$$;$
1660	PPCODE:	987	PPCODE:
1661	{	988	{
		989	int fd = s_fileno_croak (fh, 0);
1662	dREQ;	990	dREQ;
1663		991
1664	req->type = REQ_READAHEAD;	992	req->type = EIO_READAHEAD;
1665	req->sv1 = newSVsv (fh);	993	req->sv1 = newSVsv (fh);
1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	994	req->int1 = fd;
1667	req->offs = SvVAL64 (offset);	995	req->offs = offset;
1668	req->size = length;	996	req->size = length;
1669		997
1670	REQ_SEND;	998	REQ_SEND;
1671	}	999	}
1672		1000
1673	void	1001	void
1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1002	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1675	ALIAS:	1003	ALIAS:
1676	aio_stat = REQ_STAT	1004	aio_stat = EIO_STAT
1677	aio_lstat = REQ_LSTAT	1005	aio_lstat = EIO_LSTAT
		1006	aio_statvfs = EIO_STATVFS
1678	PPCODE:	1007	PPCODE:
1679	{	1008	{
1680	dREQ;	1009	dREQ;
1681		1010
1682	req->ptr2 = malloc (sizeof (Stat_t));
1683	if (!req->ptr2)
1684	{
1685	req_destroy (req);
1686	croak ("out of memory during aio_stat statdata allocation");
1687	}
1688
1689	req->flags |= FLAG_PTR2_FREE;
1690	req->sv1 = newSVsv (fh_or_path);	1011	req->sv1 = newSVsv (fh_or_path);
1691		1012
1692	if (SvPOK (fh_or_path))	1013	if (SvPOK (req->sv1))
1693	{	1014	{
1694	req->type = ix;	1015	req->type = ix;
1695	req->ptr1 = SvPVbyte_nolen (req->sv1);	1016	req->ptr1 = SvPVbyte_nolen (req->sv1);
1696	}	1017	}
1697	else	1018	else
1698	{	1019	{
1699	req->type = REQ_FSTAT;	1020	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1021	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1701	}	1022	}
1702		1023
1703	REQ_SEND;	1024	REQ_SEND;
1704	}	1025	}
…		…
1711		1032
1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1033	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1034	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714	req->sv1 = newSVsv (fh_or_path);	1035	req->sv1 = newSVsv (fh_or_path);
1715		1036
1716	if (SvPOK (fh_or_path))	1037	if (SvPOK (req->sv1))
1717	{	1038	{
1718	req->type = REQ_UTIME;	1039	req->type = EIO_UTIME;
1719	req->ptr1 = SvPVbyte_nolen (req->sv1);	1040	req->ptr1 = SvPVbyte_nolen (req->sv1);
1720	}	1041	}
1721	else	1042	else
1722	{	1043	{
1723	req->type = REQ_FUTIME;	1044	req->type = EIO_FUTIME;
1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1045	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725	}	1046	}
1726		1047
1727	REQ_SEND;	1048	REQ_SEND;
1728	}	1049	}
…		…
1734	dREQ;	1055	dREQ;
1735		1056
1736	req->sv1 = newSVsv (fh_or_path);	1057	req->sv1 = newSVsv (fh_or_path);
1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1058	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738		1059
1739	if (SvPOK (fh_or_path))	1060	if (SvPOK (req->sv1))
1740	{	1061	{
1741	req->type = REQ_TRUNCATE;	1062	req->type = EIO_TRUNCATE;
1742	req->ptr1 = SvPVbyte_nolen (req->sv1);	1063	req->ptr1 = SvPVbyte_nolen (req->sv1);
1743	}	1064	}
1744	else	1065	else
1745	{	1066	{
1746	req->type = REQ_FTRUNCATE;	1067	req->type = EIO_FTRUNCATE;
1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1068	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748	}	1069	}
1749		1070
1750	REQ_SEND;	1071	REQ_SEND;
1751	}	1072	}
1752		1073
1753	void	1074	void
1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1075	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1076	ALIAS:
		1077	aio_chmod = EIO_CHMOD
		1078	aio_mkdir = EIO_MKDIR
1755	PPCODE:	1079	PPCODE:
1756	{	1080	{
1757	dREQ;	1081	dREQ;
1758		1082
1759	req->mode = mode;	1083	req->int2 = mode;
1760	req->sv1 = newSVsv (fh_or_path);	1084	req->sv1 = newSVsv (fh_or_path);
1761		1085
1762	if (SvPOK (fh_or_path))	1086	if (SvPOK (req->sv1))
1763	{	1087	{
1764	req->type = REQ_CHMOD;	1088	req->type = ix;
1765	req->ptr1 = SvPVbyte_nolen (req->sv1);	1089	req->ptr1 = SvPVbyte_nolen (req->sv1);
1766	}	1090	}
1767	else	1091	else
1768	{	1092	{
1769	req->type = REQ_FCHMOD;	1093	req->type = EIO_FCHMOD;
1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1094	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771	}	1095	}
1772		1096
1773	REQ_SEND;	1097	REQ_SEND;
1774	}	1098	}
…		…
1781		1105
1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1106	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1107	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784	req->sv1 = newSVsv (fh_or_path);	1108	req->sv1 = newSVsv (fh_or_path);
1785		1109
1786	if (SvPOK (fh_or_path))	1110	if (SvPOK (req->sv1))
1787	{	1111	{
1788	req->type = REQ_CHOWN;	1112	req->type = EIO_CHOWN;
1789	req->ptr1 = SvPVbyte_nolen (req->sv1);	1113	req->ptr1 = SvPVbyte_nolen (req->sv1);
1790	}	1114	}
1791	else	1115	else
1792	{	1116	{
1793	req->type = REQ_FCHOWN;	1117	req->type = EIO_FCHOWN;
1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1118	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1795	}	1119	}
1796		1120
1797	REQ_SEND;	1121	REQ_SEND;
1798	}	1122	}
1799		1123
1800	void	1124	void
		1125	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1126	PPCODE:
		1127	{
		1128	dREQ;
		1129
		1130	req->type = EIO_READDIR;
		1131	req->sv1 = newSVsv (pathname);
		1132	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1133	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1134
		1135	if (flags & EIO_READDIR_DENTS)
		1136	req->int1 |= EIO_READDIR_CUSTOM2;
		1137
		1138	REQ_SEND;
		1139	}
		1140
		1141	void
1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1142	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1802	ALIAS:	1143	ALIAS:
1803	aio_unlink = REQ_UNLINK	1144	aio_unlink = EIO_UNLINK
1804	aio_rmdir = REQ_RMDIR	1145	aio_rmdir = EIO_RMDIR
1805	aio_readdir = REQ_READDIR	1146	aio_readdir = EIO_READDIR
1806	PPCODE:	1147	PPCODE:
1807	{	1148	{
1808	dREQ;	1149	dREQ;
1809		1150
1810	req->type = ix;	1151	req->type = ix;
…		…
1813		1154
1814	REQ_SEND;	1155	REQ_SEND;
1815	}	1156	}
1816		1157
1817	void	1158	void
1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1819	PPCODE:
1820	{
1821	dREQ;
1822
1823	req->type = REQ_MKDIR;
1824	req->sv1 = newSVsv (pathname);
1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
1826	req->mode = mode;
1827
1828	REQ_SEND;
1829	}
1830
1831	void
1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1159	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833	ALIAS:	1160	ALIAS:
1834	aio_link = REQ_LINK	1161	aio_link = EIO_LINK
1835	aio_symlink = REQ_SYMLINK	1162	aio_symlink = EIO_SYMLINK
1836	aio_rename = REQ_RENAME	1163	aio_rename = EIO_RENAME
1837	PPCODE:	1164	PPCODE:
1838	{	1165	{
1839	dREQ;	1166	dREQ;
1840		1167
1841	req->type = ix;	1168	req->type = ix;
1842	req->sv2 = newSVsv (oldpath);	1169	req->sv1 = newSVsv (oldpath);
		1170	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1171	req->sv2 = newSVsv (newpath);
1843	req->ptr2 = SvPVbyte_nolen (req->sv2);	1172	req->ptr2 = SvPVbyte_nolen (req->sv2);
1844	req->sv1 = newSVsv (newpath);
1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1846		1173
1847	REQ_SEND;	1174	REQ_SEND;
1848	}	1175	}
1849		1176
1850	void	1177	void
1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1178	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1852	PPCODE:	1179	PPCODE:
1853	{	1180	{
1854	dREQ;	1181	dREQ;
1855		1182
1856	req->type = REQ_MKNOD;	1183	req->type = EIO_MKNOD;
1857	req->sv1 = newSVsv (pathname);	1184	req->sv1 = newSVsv (pathname);
1858	req->ptr1 = SvPVbyte_nolen (req->sv1);	1185	req->ptr1 = SvPVbyte_nolen (req->sv1);
1859	req->mode = (mode_t)mode;	1186	req->int2 = (mode_t)mode;
1860	req->offs = dev;	1187	req->offs = dev;
1861		1188
1862	REQ_SEND;	1189	REQ_SEND;
1863	}	1190	}
1864		1191
1865	void	1192	void
		1193	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1194	ALIAS:
		1195	aio_mtouch = EIO_MTOUCH
		1196	aio_msync = EIO_MSYNC
		1197	PROTOTYPE: $$$$;$
		1198	PPCODE:
		1199	{
		1200	STRLEN svlen;
		1201	UV len = SvUV (length);
		1202	char *svptr = SvPVbyte (data, svlen);
		1203
		1204	if (offset < 0)
		1205	offset += svlen;
		1206
		1207	if (offset < 0 || offset > svlen)
		1208	croak ("offset outside of scalar");
		1209
		1210	if (!SvOK (length) || len + offset > svlen)
		1211	len = svlen - offset;
		1212
		1213	{
		1214	dREQ;
		1215
		1216	req->type = ix;
		1217	req->size = len;
		1218	req->sv2 = SvREFCNT_inc (data);
		1219	req->ptr2 = (char *)svptr + offset;
		1220	req->int1 = flags;
		1221
		1222	REQ_SEND;
		1223	}
		1224	}
		1225
		1226	void
1866	aio_busy (double delay, SV *callback=&PL_sv_undef)	1227	aio_busy (double delay, SV *callback=&PL_sv_undef)
1867	PPCODE:	1228	PPCODE:
1868	{	1229	{
1869	dREQ;	1230	dREQ;
1870		1231
1871	req->type = REQ_BUSY;	1232	req->type = EIO_BUSY;
1872	req->nv1 = delay < 0. ? 0. : delay;	1233	req->nv1 = delay < 0. ? 0. : delay;
1873		1234
1874	REQ_SEND;	1235	REQ_SEND;
1875	}	1236	}
1876		1237
…		…
1879	PROTOTYPE: ;$	1240	PROTOTYPE: ;$
1880	PPCODE:	1241	PPCODE:
1881	{	1242	{
1882	dREQ;	1243	dREQ;
1883		1244
1884	req->type = REQ_GROUP;	1245	req->type = EIO_GROUP;
1885		1246
1886	req_send (req);	1247	req_submit (req);
1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1248	XPUSHs (req_sv (req, aio_grp_stash));
1888	}	1249	}
1889		1250
1890	void	1251	void
1891	aio_nop (SV *callback=&PL_sv_undef)	1252	aio_nop (SV *callback=&PL_sv_undef)
1892	ALIAS:	1253	ALIAS:
1893	aio_nop = REQ_NOP	1254	aio_nop = EIO_NOP
1894	aio_sync = REQ_SYNC	1255	aio_sync = EIO_SYNC
1895	PPCODE:	1256	PPCODE:
1896	{	1257	{
1897	dREQ;	1258	dREQ;
1898		1259
1899	req->type = ix;	1260	req->type = ix;
…		…
1903		1264
1904	int	1265	int
1905	aioreq_pri (int pri = 0)	1266	aioreq_pri (int pri = 0)
1906	PROTOTYPE: ;$	1267	PROTOTYPE: ;$
1907	CODE:	1268	CODE:
1908	RETVAL = next_pri - PRI_BIAS;	1269	RETVAL = next_pri;
1909	if (items > 0)	1270	if (items > 0)
1910	{	1271	{
1911	if (pri < PRI_MIN) pri = PRI_MIN;	1272	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1912	if (pri > PRI_MAX) pri = PRI_MAX;	1273	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1913	next_pri = pri + PRI_BIAS;	1274	next_pri = pri;
1914	}	1275	}
1915	OUTPUT:	1276	OUTPUT:
1916	RETVAL	1277	RETVAL
1917		1278
1918	void	1279	void
1919	aioreq_nice (int nice = 0)	1280	aioreq_nice (int nice = 0)
1920	CODE:	1281	CODE:
1921	nice = next_pri - nice;	1282	nice = next_pri - nice;
1922	if (nice < PRI_MIN) nice = PRI_MIN;	1283	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1923	if (nice > PRI_MAX) nice = PRI_MAX;	1284	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1924	next_pri = nice + PRI_BIAS;	1285	next_pri = nice;
1925		1286
1926	void	1287	void
1927	flush ()	1288	flush ()
1928	PROTOTYPE:	1289	PROTOTYPE:
1929	CODE:	1290	CODE:
1930	while (nreqs)	1291	while (eio_nreqs ())
1931	{	1292	{
1932	poll_wait ();	1293	poll_wait ();
1933	poll_cb ();	1294	poll_cb ();
1934	}	1295	}
1935		1296
…		…
1944		1305
1945	int	1306	int
1946	poll_fileno()	1307	poll_fileno()
1947	PROTOTYPE:	1308	PROTOTYPE:
1948	CODE:	1309	CODE:
1949	RETVAL = respipe [0];	1310	RETVAL = s_epipe_fd (&respipe);
1950	OUTPUT:	1311	OUTPUT:
1951	RETVAL	1312	RETVAL
1952		1313
1953	int	1314	int
1954	poll_cb(...)	1315	poll_cb(...)
…		…
1962	poll_wait()	1323	poll_wait()
1963	PROTOTYPE:	1324	PROTOTYPE:
1964	CODE:	1325	CODE:
1965	poll_wait ();	1326	poll_wait ();
1966		1327
1967	void
1968	setsig (int signum = SIGIO)
1969	PROTOTYPE: ;$
1970	CODE:
1971	{
1972	if (block_sig_level)
1973	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1974
1975	X_LOCK (reslock);
1976	main_tid = pthread_self ();
1977	main_sig = signum;
1978	X_UNLOCK (reslock);
1979
1980	if (main_sig && npending)
1981	pthread_kill (main_tid, main_sig);
1982	}
1983
1984	void
1985	aio_block (SV *cb)
1986	PROTOTYPE: &
1987	PPCODE:
1988	{
1989	int count;
1990
1991	block_sig ();
1992	PUSHMARK (SP);
1993	PUTBACK;
1994	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1995	unblock_sig ();
1996
1997	if (SvTRUE (ERRSV))
1998	croak (0);
1999
2000	XSRETURN (count);
2001	}
2002
2003	int	1328	int
2004	nreqs()	1329	nreqs()
2005	PROTOTYPE:	1330	PROTOTYPE:
2006	CODE:	1331	CODE:
2007	RETVAL = nreqs;	1332	RETVAL = eio_nreqs ();
2008	OUTPUT:	1333	OUTPUT:
2009	RETVAL	1334	RETVAL
2010		1335
2011	int	1336	int
2012	nready()	1337	nready()
2013	PROTOTYPE:	1338	PROTOTYPE:
2014	CODE:	1339	CODE:
2015	RETVAL = get_nready ();	1340	RETVAL = eio_nready ();
2016	OUTPUT:	1341	OUTPUT:
2017	RETVAL	1342	RETVAL
2018		1343
2019	int	1344	int
2020	npending()	1345	npending()
2021	PROTOTYPE:	1346	PROTOTYPE:
2022	CODE:	1347	CODE:
2023	RETVAL = get_npending ();	1348	RETVAL = eio_npending ();
2024	OUTPUT:	1349	OUTPUT:
2025	RETVAL	1350	RETVAL
2026		1351
2027	int	1352	int
2028	nthreads()	1353	nthreads()
2029	PROTOTYPE:	1354	PROTOTYPE:
2030	CODE:	1355	CODE:
2031	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1356	RETVAL = eio_nthreads ();
2032	RETVAL = started;
2033	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2034	OUTPUT:	1357	OUTPUT:
2035	RETVAL	1358	RETVAL
2036		1359
		1360	int
		1361	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1362	PROTOTYPE: $$$$
		1363	CODE:
		1364	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1365	RETVAL = posix_fadvise (fh, offset, length, advice);
		1366	#else
		1367	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1368	#endif
		1369	OUTPUT:
		1370	RETVAL
		1371
		1372	ssize_t
		1373	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1374	PROTOTYPE: $$$$
		1375	CODE:
		1376	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1377	OUTPUT:
		1378	RETVAL
		1379
		1380	void
		1381	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1382	PROTOTYPE: $$$$$;$
		1383	PPCODE:
		1384	sv_unmagic (scalar, MMAP_MAGIC);
		1385	{
		1386	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1387	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1388	if (addr == (void *)-1)
		1389	XSRETURN_NO;
		1390
		1391	/* we store the length in mg_obj, as namlen is I32 :/ */
		1392	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1393	->mg_obj = (SV *)length;
		1394
		1395	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1396	if (!(prot & PROT_WRITE))
		1397	SvREADONLY_on (scalar);
		1398
		1399	SvPVX (scalar) = (char *)addr;
		1400	SvCUR_set (scalar, length);
		1401	SvLEN_set (scalar, 0);
		1402	SvPOK_only (scalar);
		1403
		1404	XSRETURN_YES;
		1405	}
		1406
		1407	void
		1408	munmap (SV *scalar)
		1409	PROTOTYPE: $
		1410	CODE:
		1411	sv_unmagic (scalar, MMAP_MAGIC);
		1412
		1413	int
		1414	mlockall (int flags)
		1415	PROTOTYPE: $
		1416	CODE:
		1417	#if _POSIX_MEMLOCK
		1418	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1419	extern int mallopt (int, int);
		1420	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1421	#endif
		1422	mlockall (flags);
		1423	#else
		1424	RETVAL = -1;
		1425	errno = ENOSYS;
		1426	#endif
		1427	OUTPUT:
		1428	RETVAL
		1429
		1430	int
		1431	munlockall ()
		1432	PROTOTYPE:
		1433	CODE:
		1434	#if _POSIX_MEMLOCK
		1435	munlockall ();
		1436	#else
		1437	RETVAL = -1;
		1438	errno = ENOSYS;
		1439	#endif
		1440	OUTPUT:
		1441	RETVAL
		1442
		1443	void _on_next_submit (SV *cb)
		1444	CODE:
		1445	SvREFCNT_dec (on_next_submit);
		1446	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1447
2037	PROTOTYPES: DISABLE	1448	PROTOTYPES: DISABLE
2038		1449
2039	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1450	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2040		1451
2041	void	1452	void
2042	cancel (aio_req_ornot req)	1453	cancel (aio_req_ornot req)
2043	CODE:	1454	CODE:
2044	req_cancel (req);	1455	eio_cancel (req);
2045		1456
2046	void	1457	void
2047	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1458	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2048	CODE:	1459	PPCODE:
		1460	{
		1461	if (GIMME_V != G_VOID)
		1462	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1463
		1464	if (items > 1)
		1465	{
		1466	SV *cb_cv =get_cb (callback);
		1467
2049	SvREFCNT_dec (req->callback);	1468	SvREFCNT_dec (req->callback);
2050	req->callback = newSVsv (callback);	1469	req->callback = SvREFCNT_inc (cb_cv);
		1470	}
		1471	}
2051		1472
2052	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2053		1474
2054	void	1475	void
2055	add (aio_req grp, ...)	1476	add (aio_req grp, ...)
2056	PPCODE:	1477	PPCODE:
2057	{	1478	{
2058	int i;	1479	int i;
2059	aio_req req;
2060
2061	if (main_sig && !block_sig_level)
2062	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2063		1480
2064	if (grp->int1 == 2)	1481	if (grp->int1 == 2)
2065	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1482	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2066		1483
2067	for (i = 1; i < items; ++i )	1484	for (i = 1; i < items; ++i )
2068	{	1485	{
		1486	aio_req req;
		1487
2069	if (GIMME_V != G_VOID)	1488	if (GIMME_V != G_VOID)
2070	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1489	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2071		1490
2072	req = SvAIO_REQ (ST (i));	1491	req = SvAIO_REQ (ST (i));
2073		1492
2074	if (req)	1493	if (req)
2075	{	1494	eio_grp_add (grp, req);
2076	++grp->size;
2077	req->grp = grp;
2078
2079	req->grp_prev = 0;
2080	req->grp_next = grp->grp_first;
2081
2082	if (grp->grp_first)
2083	grp->grp_first->grp_prev = req;
2084
2085	grp->grp_first = req;
2086	}
2087	}	1495	}
2088	}	1496	}
2089		1497
2090	void	1498	void
2091	cancel_subs (aio_req_ornot req)	1499	cancel_subs (aio_req_ornot req)
…		…
2100	AV *av;	1508	AV *av;
2101		1509
2102	grp->errorno = errno;	1510	grp->errorno = errno;
2103		1511
2104	av = newAV ();	1512	av = newAV ();
		1513	av_extend (av, items - 1);
2105		1514
2106	for (i = 1; i < items; ++i )	1515	for (i = 1; i < items; ++i )
2107	av_push (av, newSVsv (ST (i)));	1516	av_push (av, newSVsv (ST (i)));
2108		1517
2109	SvREFCNT_dec (grp->sv1);	1518	SvREFCNT_dec (grp->sv1);
…		…
2116	grp->errorno = errorno;	1525	grp->errorno = errorno;
2117		1526
2118	void	1527	void
2119	limit (aio_req grp, int limit)	1528	limit (aio_req grp, int limit)
2120	CODE:	1529	CODE:
2121	grp->int2 = limit;	1530	eio_grp_limit (grp, limit);
2122	aio_grp_feed (grp);
2123		1531
2124	void	1532	void
2125	feed (aio_req grp, SV *callback=&PL_sv_undef)	1533	feed (aio_req grp, SV *callback=&PL_sv_undef)
2126	CODE:	1534	CODE:
2127	{	1535	{
2128	SvREFCNT_dec (grp->sv2);	1536	SvREFCNT_dec (grp->sv2);
2129	grp->sv2 = newSVsv (callback);	1537	grp->sv2 = newSVsv (callback);
		1538	grp->feed = aio_grp_feed;
2130		1539
2131	if (grp->int2 <= 0)	1540	if (grp->int2 <= 0)
2132	grp->int2 = 2;	1541	grp->int2 = 2;
2133		1542
2134	aio_grp_feed (grp);	1543	eio_grp_limit (grp, grp->int2);
2135	}	1544	}
2136		1545

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