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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.111 by root, Sun Mar 30 06:31:49 2008 UTC vs.
Revision 1.174 by root, Mon Nov 1 22:03:43 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
18	#ifdef _WIN32	28	#ifdef _WIN32
19		29
20	# define SIGIO 0	30	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	31	# undef malloc
23	#undef free	32	# undef free
24		33
25	// perl overrides all those nice win32 functions	34	// perl overrides all those nice win32 functions
26	# undef open	35	# undef open
27	# undef read	36	# undef read
28	# undef write	37	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
56		65
57	#else	66	#else
58		67
59	# include "autoconf/config.h"
60	# include <sys/time.h>	68	# include <sys/time.h>
61	# include <sys/select.h>	69	# include <sys/select.h>
62	# include <unistd.h>	70	# include <unistd.h>
63	# include <utime.h>	71	# include <utime.h>
64	# include <signal.h>	72	# include <signal.h>
65	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
66		74
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	75	#endif
82	#endif
83		76
84	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
85	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
86		82
87	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		84
95	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
97	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
98	#else	90	#else
		91	# define VAL64 NV
99	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
100	#endif	94	#endif
101		95
102	static HV *stash;	96	/*****************************************************************************/
103		97
104	#define dBUF \	98	#if __GNUC__ >= 3
105	char *aio_buf; \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	100	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	101	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	102	#endif
109	if (!aio_buf) \	103
110	return -1;	104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
111		108
112	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/eio.h"
		124
		125	#ifndef POSIX_FADV_NORMAL
		126	# define POSIX_FADV_NORMAL 0
		127	# define NO_FADVISE 1
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if _XOPEN_SOURCE < 600 || NO_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	# define NO_MADVISE 1
		152	#endif
		153	#ifndef POSIX_MADV_SEQUENTIAL
		154	# define POSIX_MADV_SEQUENTIAL 0
		155	#endif
		156	#ifndef POSIX_MADV_RANDOM
		157	# define POSIX_MADV_RANDOM 0
		158	#endif
		159	#ifndef POSIX_MADV_WILLNEED
		160	# define POSIX_MADV_WILLNEED 0
		161	#endif
		162	#ifndef POSIX_MADV_DONTNEED
		163	# define POSIX_MADV_DONTNEED 0
		164	#endif
		165
		166	#if _XOPEN_SOURCE < 600 || NO_MADVISE
		167	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		168	#endif
		169
		170	#ifndef PROT_NONE
		171	# define PROT_NONE 0
		172	#endif
		173	#ifndef PROT_READ
		174	# define PROT_READ 0
		175	#endif
		176	#ifndef PROT_WRITE
		177	# define PROT_READ 0
		178	#endif
		179	#ifndef PROT_EXEC
		180	# define PROT_EXEC 0
		181	#endif
		182
		183	#ifndef ST_NODEV
		184	# define ST_NODEV 0
		185	#endif
		186	#ifndef ST_NOEXEC
		187	# define ST_NOEXEC 0
		188	#endif
		189	#ifndef ST_SYNCHRONOUS
		190	# define ST_SYNCHRONOUS 0
		191	#endif
		192	#ifndef ST_MANDLOCK
		193	# define ST_MANDLOCK 0
		194	#endif
		195	#ifndef ST_WRITE
		196	# define ST_WRITE 0
		197	#endif
		198	#ifndef ST_APPEND
		199	# define ST_APPEND 0
		200	#endif
		201	#ifndef ST_IMMUTABLE
		202	# define ST_IMMUTABLE 0
		203	#endif
		204	#ifndef ST_NOATIME
		205	# define ST_NOATIME 0
		206	#endif
		207	#ifndef ST_NODIRATIME
		208	# define ST_NODIRATIME 0
		209	#endif
		210	#ifndef ST_RELATIME
		211	# define ST_RELATIME 0
		212	#endif
		213
		214	#ifndef MAP_ANONYMOUS
		215	# ifdef MAP_ANON
		216	# define MAP_ANONYMOUS MAP_ANON
		217	# else
		218	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		219	# endif
		220	#endif
		221	#ifndef MAP_HUGETLB
		222	# define MAP_HUGETLB 0
		223	#endif
		224	#ifndef MAP_LOCKED
		225	# define MAP_LOCKED 0
		226	#endif
		227	#ifndef MAP_NORESERVE
		228	# define MAP_NORESERVE 0
		229	#endif
		230	#ifndef MAP_POPULATE
		231	# define MAP_POPULATE 0
		232	#endif
		233	#ifndef MAP_NONBLOCK
		234	# define MAP_NONBLOCK 0
		235	#endif
		236
		237	#ifndef PAGESIZE
		238	# define PAGESIZE sysconf (_SC_PAGESIZE)
		239	#endif
		240
		241	static int req_invoke (eio_req *req);
		242	#define EIO_FINISH(req) req_invoke (req)
		243	static void req_destroy (eio_req *grp);
		244	#define EIO_DESTROY(req) req_destroy (req)
113		245
114	enum {	246	enum {
115	REQ_QUIT,	247	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	};	248	};
131		249
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	250	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		251
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;	252	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	253	typedef eio_req *aio_req_ornot;
168		254
169	enum {	255	static SV *on_next_submit;
170	PRI_MIN = -4,	256	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	257	static int max_outstanding;
172		258
173	DEFAULT_PRI = 0,	259	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		260
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);	261	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	262	static void req_cancel (aio_req req);
378		263
		264	static void want_poll (void)
		265	{
		266	/* write a dummy byte to the pipe so fh becomes ready */
		267	s_epipe_signal (&respipe);
		268	}
		269
		270	static void done_poll (void)
		271	{
		272	/* read any signals sent by the worker threads */
		273	s_epipe_drain (&respipe);
		274	}
		275
379	/* must be called at most once */	276	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	277	static SV *req_sv (aio_req req, HV *stash)
381	{	278	{
382	if (!req->self)	279	if (!req->self)
383	{	280	{
384	req->self = (SV *)newHV ();	281	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	282	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	283	}
387		284
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	285	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	286	}
390		287
391	static aio_req SvAIO_REQ (SV *sv)	288	static aio_req SvAIO_REQ (SV *sv)
392	{	289	{
393	MAGIC *mg;	290	MAGIC *mg;
394		291
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	292	if (!SvROK (sv)
		293	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		294	&& SvSTASH (SvRV (sv)) != aio_req_stash
		295	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	296	croak ("object of class IO::AIO::REQ expected");
397		297
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	298	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		299
400	return mg ? (aio_req)mg->mg_ptr : 0;	300	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	301	}
402		302
403	static void aio_grp_feed (aio_req grp)	303	static void aio_grp_feed (aio_req grp)
404	{	304	{
405	block_sig ();	305	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	306	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	307	dSP;
414		308
415	ENTER;	309	ENTER;
416	SAVETMPS;	310	SAVETMPS;
417	PUSHMARK (SP);	311	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	312	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	313	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	314	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	315	SPAGAIN;
422	FREETMPS;	316	FREETMPS;
423	LEAVE;	317	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	}	318	}
434
435	unblock_sig ();
436	}	319	}
437		320
438	static void aio_grp_dec (aio_req grp)	321	static void req_submit (eio_req *req)
439	{	322	{
440	--grp->size;	323	eio_submit (req);
441		324
442	/* call feeder, if applicable */	325	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	326	{
448	block_sig ();	327	dSP;
		328	SV *cb = sv_2mortal (on_next_submit);
449		329
450	if (!req_invoke (grp))	330	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		331
457	req_destroy (grp);	332	PUSHMARK (SP);
458	unblock_sig ();	333	PUTBACK;
		334	call_sv (cb, G_DISCARD | G_EVAL);
459	}	335	}
460	}	336	}
461		337
462	static int req_invoke (aio_req req)	338	static int req_invoke (eio_req *req)
463	{	339	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	340	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	341	SvREADONLY_off (req->sv2);
468		342
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	343	if (!EIO_CANCELLED (req) && req->callback)
470	{	344	{
		345	dSP;
		346	static SV *sv_result_cache; /* caches the result integer SV */
		347	SV *sv_result;
		348
471	ENTER;	349	ENTER;
472	SAVETMPS;	350	SAVETMPS;
473	PUSHMARK (SP);	351	PUSHMARK (SP);
474	EXTEND (SP, 1);	352	EXTEND (SP, 1);
475		353
		354	/* do not recreate the result IV from scratch each time */
		355	if (expect_true (sv_result_cache))
		356	{
		357	sv_result = sv_result_cache; sv_result_cache = 0;
		358	SvIV_set (sv_result, req->result);
		359	}
		360	else
		361	{
		362	sv_result = newSViv (req->result);
		363	SvREADONLY_on (sv_result);
		364	}
		365
476	switch (req->type)	366	switch (req->type)
477	{	367	{
478	case REQ_READDIR:	368	case EIO_READDIR:
479	{	369	{
480	SV *rv = &PL_sv_undef;	370	SV *rv = &PL_sv_undef;
481		371
482	if (req->result >= 0)	372	if (req->result >= 0)
483	{	373	{
484	int i;	374	int i;
485	char *buf = req->ptr2;	375	char *names = (char *)req->ptr2;
		376	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	377	AV *av = newAV ();
487		378
488	av_extend (av, req->result - 1);	379	av_extend (av, req->result - 1);
489		380
490	for (i = 0; i < req->result; ++i)	381	for (i = 0; i < req->result; ++i)
491	{	382	{
492	SV *sv = newSVpv (buf, 0);	383	if (req->int1 & EIO_READDIR_DENTS)
		384	{
		385	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		386
		387	if (req->int1 & EIO_READDIR_CUSTOM2)
		388	{
		389	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		390	AV *avent = newAV ();
		391
		392	av_extend (avent, 2);
		393
		394	if (!sv_type [ent->type])
		395	{
		396	sv_type [ent->type] = newSViv (ent->type);
		397	SvREADONLY_on (sv_type [ent->type]);
		398	}
		399
		400	av_store (avent, 0, namesv);
		401	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		402	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		403
		404	av_store (av, i, newRV_noinc ((SV *)avent));
		405	}
		406	else
494	av_store (av, i, sv);	407	av_store (av, i, namesv);
		408
		409	++ent;
		410	}
		411	else
		412	{
		413	SV *name = newSVpv (names, 0);
		414	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	415	names += SvCUR (name) + 1;
		416	}
496	}	417	}
497		418
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	419	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	420	}
500		421
501	PUSHs (rv);	422	PUSHs (rv);
		423
		424	if (req->int1 & EIO_READDIR_CUSTOM1)
		425	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	426	}
503	break;	427	break;
504		428
505	case REQ_OPEN:	429	case EIO_OPEN:
506	{	430	{
507	/* convert fd to fh */	431	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	432	SV *fh = &PL_sv_undef;
509		433
510	if (req->result >= 0)	434	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	436	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	437	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	438	char sym [64];
515	int symlen;	439	int symlen;
516		440
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	441	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	442	gv_init (gv, aio_stash, sym, symlen, 0);
519		443
520	symlen = snprintf (	444	symlen = snprintf (
521	sym,	445	sym,
522	sizeof (sym),	446	sizeof (sym),
523	"%s&=%d",	447	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	448	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	449	(int)req->result
526	);	450	);
527		451
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	452	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	453	fh = (SV *)gv;
530	}	454	}
531		455
532	PUSHs (fh);	456	PUSHs (fh);
533	}	457	}
534	break;	458	break;
535		459
		460	case EIO_STATVFS:
		461	case EIO_FSTATVFS:
		462	{
		463	SV *rv = &PL_sv_undef;
		464
		465	if (req->result >= 0)
		466	{
		467	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		468	HV *hv = newHV ();
		469
		470	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		471
		472	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		473	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		474	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		475	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		476	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		477	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		478	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		479	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		480	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		481	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		482	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		483	}
		484
		485	PUSHs (rv);
		486	}
		487
		488	break;
		489
536	case REQ_GROUP:	490	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	491	req->int1 = 2; /* mark group as finished */
538		492
539	if (req->sv1)	493	if (req->sv1)
540	{	494	{
541	int i;	495	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	499	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	500	PUSHs (*av_fetch (av, i, 0));
547	}	501	}
548	break;	502	break;
549		503
550	case REQ_NOP:	504	case EIO_NOP:
551	case REQ_BUSY:	505	case EIO_BUSY:
552	break;	506	break;
553		507
554	case REQ_READLINK:	508	case EIO_READLINK:
555	if (req->result > 0)	509	if (req->result > 0)
556	{	510	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;	511	break;
562		512
563	case REQ_STAT:	513	case EIO_STAT:
564	case REQ_LSTAT:	514	case EIO_LSTAT:
565	case REQ_FSTAT:	515	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	516	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	517	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	518	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	519	PUSHs (sv_result);
570	break;	520	break;
571		521
572	case REQ_READ:	522	case EIO_READ:
		523	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	524	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	525	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	526	SvPOK_only (req->sv2);
		527	SvSETMAGIC (req->sv2);
		528	PUSHs (sv_result);
		529	}
576	break;	530	break;
577		531
		532	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
		533	if (req->result > 0)
		534	SvIV_set (sv_result, 0);
		535	/* FALLTHROUGH */
		536
578	default:	537	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	538	PUSHs (sv_result);
580	break;	539	break;
581	}	540	}
582		541
583	errno = req->errorno;	542	errno = req->errorno;
584		543
585	PUTBACK;	544	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	546	SPAGAIN;
588		547
		548	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		549	SvREFCNT_dec (sv_result);
		550	else
		551	sv_result_cache = sv_result;
		552
589	FREETMPS;	553	FREETMPS;
590	LEAVE;	554	LEAVE;
591		555
592	PUTBACK;	556	PUTBACK;
593	}	557	}
594		558
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);	559	return !!SvTRUE (ERRSV);
610	}	560	}
611		561
612	static void req_destroy (aio_req req)	562	static void req_destroy (aio_req req)
613	{	563	{
614	if (req->self)	564	if (req->self)
…		…
619		569
620	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
623		573
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	574	Safefree (req);
628	}	575	}
629		576
630	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
631	{	578	{
632	aio_req sub;	579	aio_req sub;
633		580
634	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
635	return;	582	return;
636		583
637	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	585	grp->sv2 = 0;
639		586
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	588	}
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		589
657	static void	590	static void
658	create_respipe (void)	591	create_respipe (void)
659	{	592	{
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))	593	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	594	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	}	595	}
789		596
790	static void poll_wait (void)	597	static void poll_wait (void)
791	{	598	{
792	fd_set rfd;
793
794	while (nreqs)	599	while (eio_nreqs ())
795	{	600	{
796	int size;	601	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	602
		603	X_LOCK (reslock);
798	size = res_queue.size;	604	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	605	X_UNLOCK (reslock);
800		606
801	if (size)	607	if (size)
802	return;	608	return;
803		609
804	maybe_start_thread ();	610	etp_maybe_start_thread ();
805		611
806	FD_ZERO (&rfd);	612	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	613	}
811	}	614	}
812		615
813	static int poll_cb (void)	616	static int poll_cb (void)
814	{	617	{
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 (;;)	618	for (;;)
828	{	619	{
829	for (;;)	620	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		621
833	X_LOCK (reslock);	622	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);	623	croak (0);
868	}
869		624
870	count++;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	626	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		627
890	poll_wait ();	628	poll_wait ();
891
892	++maxreqs;
893	}	629	}
		630	}
894		631
895	unblock_sig ();	632	static void atfork_child (void)
896	return count;	633	{
		634	create_respipe ();
897	}	635	}
898		636
899	/*****************************************************************************/	637	/*****************************************************************************/
900	/* work around various missing functions */
901		638
902	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
905		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
906	/*	643	# define PROT_NONE 0
907	* make our pread/pwrite safe against themselves, but not against	644	# define PROT_WRITE 0
908	* normal read/write by using a mutex. slows down execution a lot,	645	# define MAP_PRIVATE 0
909	* but that's your problem, not mine.	646	# define MAP_SHARED 0
910	*/	647	# define MAP_FIXED 0
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	648	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		649
1080	if (res < 0	650	#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		651
1091	res = 0;	652	static int
		653	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		654	{
		655	int old_errno = errno;
		656	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		657	errno = old_errno;
1092		658
1093	while (count)	659	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		660
1099	if (cnt <= 0)	661	SvREADONLY_off (sv);
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104		662
1105	cnt = write (ofd, aio_buf, cnt);	663	if (SvPVX (sv) != mg->mg_ptr)
		664	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1106		665
1107	if (cnt <= 0)	666	SvCUR_set (sv, 0);
1108	{	667	SvPVX (sv) = 0;
1109	if (cnt && !res) res = -1;	668	SvOK_off (sv);
1110	break;
1111	}
1112		669
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;	670	return 0;
1120	}	671	}
1121		672
1122	/* read a full directory */	673	static MGVTBL mmap_vtbl = {
1123	static void scandir_ (aio_req req, worker *self)	674	0, 0, 0, 0, mmap_free
1124	{	675	};
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		676
1183	/*****************************************************************************/	677	/*****************************************************************************/
1184		678
1185	X_THREAD_PROC (aio_proc)	679	static SV *
		680	get_cb (SV *cb_sv)
1186	{	681	{
1187	{//D	682	SvGETMAGIC (cb_sv);
1188	aio_req req;	683	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1189	struct timespec ts;
1190	worker *self = (worker *)thr_arg;
1191
1192	/* try to distribute timeouts somewhat randomly */
1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195	for (;;)
1196	{
1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199	X_LOCK (reqlock);
1200
1201	for (;;)
1202	{
1203	self->req = req = reqq_shift (&req_queue);
1204
1205	if (req)
1206	break;
1207
1208	++idle;
1209
1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211	== ETIMEDOUT)
1212	{
1213	if (idle > max_idle)
1214	{
1215	--idle;
1216	X_UNLOCK (reqlock);
1217	X_LOCK (wrklock);
1218	--started;
1219	X_UNLOCK (wrklock);
1220	goto quit;
1221	}
1222
1223	/* we are allowed to idle, so do so without any timeout */
1224	X_COND_WAIT (reqwait, reqlock);
1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226	}
1227
1228	--idle;
1229	}
1230
1231	--nready;
1232
1233	X_UNLOCK (reqlock);
1234
1235	errno = 0; /* strictly unnecessary */
1236
1237	if (!(req->flags & FLAG_CANCELLED))
1238	switch (req->type)
1239	{
1240	case REQ_READ: req->result = req->offs >= 0
1241	? pread (req->int1, req->ptr1, req->size, req->offs)
1242	: read (req->int1, req->ptr1, req->size); break;
1243	case REQ_WRITE: req->result = req->offs >= 0
1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245	: write (req->int1, req->ptr1, req->size); break;
1246
1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262	case REQ_CLOSE: req->result = close (req->int1); break;
1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272	case REQ_SYNC: req->result = 0; sync (); break;
1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
1274	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1275
1276	case REQ_READDIR: scandir_ (req, self); break;
1277
1278	case REQ_BUSY:
1279	#ifdef _WIN32
1280	Sleep (req->nv1 * 1000.);
1281	#else
1282	{
1283	struct timeval tv;
1284
1285	tv.tv_sec = req->nv1;
1286	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1287
1288	req->result = select (0, 0, 0, 0, &tv);
1289	}
1290	#endif
1291	break;
1292
1293	case REQ_UTIME:
1294	case REQ_FUTIME:
1295	{
1296	struct timeval tv[2];
1297	struct timeval *times;
1298
1299	if (req->nv1 != -1. || req->nv2 != -1.)
1300	{
1301	tv[0].tv_sec = req->nv1;
1302	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1303	tv[1].tv_sec = req->nv2;
1304	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1305
1306	times = tv;
1307	}
1308	else
1309	times = 0;
1310
1311
1312	req->result = req->type == REQ_FUTIME
1313	? futimes (req->int1, times)
1314	: utimes (req->ptr1, times);
1315	}
1316
1317	case REQ_GROUP:
1318	case REQ_NOP:
1319	break;
1320
1321	case REQ_QUIT:
1322	goto quit;
1323
1324	default:
1325	req->result = -1;
1326	break;
1327	}
1328
1329	req->errorno = errno;
1330
1331	X_LOCK (reslock);
1332
1333	++npending;
1334
1335	if (!reqq_push (&res_queue, req))
1336	{
1337	/* write a dummy byte to the pipe so fh becomes ready */
1338	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1339
1340	/* optionally signal the main thread asynchronously */
1341	if (main_sig)
1342	pthread_kill (main_tid, main_sig);
1343	}
1344
1345	self->req = 0;
1346	worker_clear (self);
1347
1348	X_UNLOCK (reslock);
1349	}
1350
1351	quit:
1352	X_LOCK (wrklock);
1353	worker_free (self);
1354	X_UNLOCK (wrklock);
1355
1356	return 0;
1357	}//D
1358	}
1359
1360	/*****************************************************************************/
1361
1362	static void atfork_prepare (void)
1363	{
1364	X_LOCK (wrklock);
1365	X_LOCK (reqlock);
1366	X_LOCK (reslock);
1367	#if !HAVE_PREADWRITE
1368	X_LOCK (preadwritelock);
1369	#endif
1370	#if !HAVE_READDIR_R
1371	X_LOCK (readdirlock);
1372	#endif
1373	}
1374
1375	static void atfork_parent (void)
1376	{
1377	#if !HAVE_READDIR_R
1378	X_UNLOCK (readdirlock);
1379	#endif
1380	#if !HAVE_PREADWRITE
1381	X_UNLOCK (preadwritelock);
1382	#endif
1383	X_UNLOCK (reslock);
1384	X_UNLOCK (reqlock);
1385	X_UNLOCK (wrklock);
1386	}
1387
1388	static void atfork_child (void)
1389	{
1390	aio_req prv;
1391
1392	while (prv = reqq_shift (&req_queue))
1393	req_destroy (prv);
1394
1395	while (prv = reqq_shift (&res_queue))
1396	req_destroy (prv);
1397
1398	while (wrk_first.next != &wrk_first)
1399	{
1400	worker *wrk = wrk_first.next;
1401
1402	if (wrk->req)
1403	req_destroy (wrk->req);
1404
1405	worker_clear (wrk);
1406	worker_free (wrk);
1407	}
1408
1409	started = 0;
1410	idle = 0;
1411	nreqs = 0;
1412	nready = 0;
1413	npending = 0;
1414
1415	create_respipe ();
1416
1417	atfork_parent ();
1418	}	684	}
1419		685
1420	#define dREQ \	686	#define dREQ \
		687	SV *cb_cv; \
1421	aio_req req; \	688	aio_req req; \
1422	int req_pri = next_pri; \	689	int req_pri = next_pri; \
1423	next_pri = DEFAULT_PRI + PRI_BIAS; \	690	next_pri = EIO_PRI_DEFAULT; \
1424	\	691	\
1425	if (SvOK (callback) && !SvROK (callback)) \	692	cb_cv = get_cb (callback); \
1426	croak ("callback must be undef or of reference type"); \
1427	\	693	\
1428	Newz (0, req, 1, aio_cb); \	694	Newz (0, req, 1, eio_req); \
1429	if (!req) \	695	if (!req) \
1430	croak ("out of memory during aio_req allocation"); \	696	croak ("out of memory during eio_req allocation"); \
1431	\	697	\
1432	req->callback = newSVsv (callback); \	698	req->callback = SvREFCNT_inc (cb_cv); \
1433	req->pri = req_pri	699	req->pri = req_pri
1434		700
1435	#define REQ_SEND \	701	#define REQ_SEND \
		702	PUTBACK; \
1436	req_send (req); \	703	req_submit (req); \
		704	SPAGAIN; \
1437	\	705	\
1438	if (GIMME_V != G_VOID) \	706	if (GIMME_V != G_VOID) \
1439	XPUSHs (req_sv (req, AIO_REQ_KLASS));	707	XPUSHs (req_sv (req, aio_req_stash));
1440		708
1441	MODULE = IO::AIO PACKAGE = IO::AIO	709	MODULE = IO::AIO PACKAGE = IO::AIO
1442		710
1443	PROTOTYPES: ENABLE	711	PROTOTYPES: ENABLE
1444		712
1445	BOOT:	713	BOOT:
1446	{	714	{
1447	stash = gv_stashpv ("IO::AIO", 1);	715	static const struct {
1448		716	const char *name;
1449	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	717	IV iv;
1450	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	718	} *civ, const_iv[] = {
1451	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	719	# define const_niv(name, value) { # name, (IV) value },
1452	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	720	# define const_iv(name) { # name, (IV) name },
1453	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	721	# define const_eio(name) { # name, (IV) EIO_ ## name },
		722	const_iv (EXDEV)
		723	const_iv (ENOSYS)
		724	const_iv (O_RDONLY)
		725	const_iv (O_WRONLY)
		726	const_iv (O_RDWR)
		727	const_iv (O_CREAT)
		728	const_iv (O_TRUNC)
		729	const_iv (O_EXCL)
		730	const_iv (O_APPEND)
1454	#ifdef _WIN32	731	#ifndef _WIN32
1455	X_MUTEX_CHECK (wrklock);	732	const_iv (S_IFIFO)
1456	X_MUTEX_CHECK (reslock);
1457	X_MUTEX_CHECK (reqlock);
1458	X_MUTEX_CHECK (reqwait);
1459	X_MUTEX_CHECK (preadwritelock);
1460	X_MUTEX_CHECK (readdirlock);
1461
1462	X_COND_CHECK (reqwait);
1463	#else
1464	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1465	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1466	#endif	733	#endif
		734	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		735	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		736	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		737	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		738	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		739	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1467		740
		741	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		742	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		743	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		744	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		745	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		746
		747	const_iv (ST_RDONLY)
		748	const_iv (ST_NOSUID)
		749	const_iv (ST_NODEV)
		750	const_iv (ST_NOEXEC)
		751	const_iv (ST_SYNCHRONOUS)
		752	const_iv (ST_MANDLOCK)
		753	const_iv (ST_WRITE)
		754	const_iv (ST_APPEND)
		755	const_iv (ST_IMMUTABLE)
		756	const_iv (ST_NOATIME)
		757	const_iv (ST_NODIRATIME)
		758	const_iv (ST_RELATIME)
		759
		760	const_iv (PROT_NONE)
		761	const_iv (PROT_EXEC)
		762	const_iv (PROT_READ)
		763	const_iv (PROT_WRITE)
		764
		765	/*const_iv (MAP_FIXED)*/
		766	const_iv (MAP_PRIVATE)
		767	const_iv (MAP_SHARED)
		768	const_iv (MAP_ANONYMOUS)
		769
		770	/* linuxish */
		771	const_iv (MAP_HUGETLB)
		772	const_iv (MAP_LOCKED)
		773	const_iv (MAP_NORESERVE)
		774	const_iv (MAP_POPULATE)
		775	const_iv (MAP_NONBLOCK)
		776
		777	const_eio (MCL_FUTURE)
		778	const_eio (MCL_CURRENT)
		779
		780	const_eio (MS_ASYNC)
		781	const_eio (MS_INVALIDATE)
		782	const_eio (MS_SYNC)
		783
		784	const_eio (MT_MODIFY)
		785
		786	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		787	const_eio (SYNC_FILE_RANGE_WRITE)
		788	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		789
		790	const_eio (READDIR_DENTS)
		791	const_eio (READDIR_DIRS_FIRST)
		792	const_eio (READDIR_STAT_ORDER)
		793	const_eio (READDIR_FOUND_UNKNOWN)
		794
		795	const_eio (DT_UNKNOWN)
		796	const_eio (DT_FIFO)
		797	const_eio (DT_CHR)
		798	const_eio (DT_DIR)
		799	const_eio (DT_BLK)
		800	const_eio (DT_REG)
		801	const_eio (DT_LNK)
		802	const_eio (DT_SOCK)
		803	const_eio (DT_WHT)
		804	};
		805
		806	aio_stash = gv_stashpv ("IO::AIO" , 1);
		807	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		808	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		809
		810	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		811	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		812
		813	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		814
1468	create_respipe ();	815	create_respipe ();
1469		816
1470	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	817	if (eio_init (want_poll, done_poll) < 0)
		818	croak ("IO::AIO: unable to initialise eio library");
		819
		820	/* atfork child called in fifo order, so before eio's handler */
		821	X_THREAD_ATFORK (0, 0, atfork_child);
1471	}	822	}
1472		823
1473	void	824	void
1474	max_poll_reqs (int nreqs)	825	max_poll_reqs (int nreqs)
1475	PROTOTYPE: $	826	PROTOTYPE: $
1476	CODE:	827	CODE:
1477	max_poll_reqs = nreqs;	828	eio_set_max_poll_reqs (nreqs);
1478		829
1479	void	830	void
1480	max_poll_time (double nseconds)	831	max_poll_time (double nseconds)
1481	PROTOTYPE: $	832	PROTOTYPE: $
1482	CODE:	833	CODE:
1483	max_poll_time = nseconds * AIO_TICKS;	834	eio_set_max_poll_time (nseconds);
1484		835
1485	void	836	void
1486	min_parallel (int nthreads)	837	min_parallel (int nthreads)
1487	PROTOTYPE: $	838	PROTOTYPE: $
		839	CODE:
		840	eio_set_min_parallel (nthreads);
1488		841
1489	void	842	void
1490	max_parallel (int nthreads)	843	max_parallel (int nthreads)
1491	PROTOTYPE: $	844	PROTOTYPE: $
		845	CODE:
		846	eio_set_max_parallel (nthreads);
1492		847
1493	void	848	void
1494	max_idle (int nthreads)	849	max_idle (int nthreads)
1495	PROTOTYPE: $	850	PROTOTYPE: $
1496	CODE:	851	CODE:
1497	set_max_idle (nthreads);	852	eio_set_max_idle (nthreads);
1498		853
1499	int	854	void
1500	max_outstanding (int maxreqs)	855	max_outstanding (int maxreqs)
1501	PROTOTYPE: $	856	PROTOTYPE: $
1502	CODE:	857	CODE:
1503	RETVAL = max_outstanding;
1504	max_outstanding = maxreqs;	858	max_outstanding = maxreqs;
1505	OUTPUT:
1506	RETVAL
1507		859
1508	void	860	void
1509	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	861	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1510	PROTOTYPE: $$$;$
1511	PPCODE:	862	PPCODE:
1512	{	863	{
1513	dREQ;	864	dREQ;
1514		865
1515	req->type = REQ_OPEN;	866	req->type = EIO_OPEN;
1516	req->sv1 = newSVsv (pathname);	867	req->sv1 = newSVsv (pathname);
1517	req->ptr1 = SvPVbyte_nolen (req->sv1);	868	req->ptr1 = SvPVbyte_nolen (req->sv1);
1518	req->int1 = flags;	869	req->int1 = flags;
1519	req->mode = mode;	870	req->int2 = mode;
1520		871
1521	REQ_SEND;	872	REQ_SEND;
1522	}	873	}
1523		874
1524	void	875	void
1525	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	876	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1526	PROTOTYPE: $;$
1527	ALIAS:	877	ALIAS:
1528	aio_fsync = REQ_FSYNC	878	aio_fsync = EIO_FSYNC
1529	aio_fdatasync = REQ_FDATASYNC	879	aio_fdatasync = EIO_FDATASYNC
1530	PPCODE:	880	PPCODE:
1531	{	881	{
		882	int fd = s_fileno_croak (fh, 0);
1532	dREQ;	883	dREQ;
1533		884
1534	req->type = ix;	885	req->type = ix;
1535	req->sv1 = newSVsv (fh);	886	req->sv1 = newSVsv (fh);
1536	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	887	req->int1 = fd;
1537		888
1538	REQ_SEND (req);	889	REQ_SEND (req);
1539	}	890	}
1540		891
1541	int
1542	_dup (int fd)
1543	PROTOTYPE: $
1544	CODE:
1545	RETVAL = dup (fd);
1546	OUTPUT:
1547	RETVAL
1548
1549	void	892	void
1550	_aio_close (int fd, SV *callback=&PL_sv_undef)	893	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$
1552	PPCODE:	894	PPCODE:
1553	{	895	{
		896	int fd = s_fileno_croak (fh, 0);
1554	dREQ;	897	dREQ;
1555		898
1556	req->type = REQ_CLOSE;	899	req->type = EIO_SYNC_FILE_RANGE;
		900	req->sv1 = newSVsv (fh);
1557	req->int1 = fd;	901	req->int1 = fd;
		902	req->offs = offset;
		903	req->size = nbytes;
		904	req->int2 = flags;
		905
		906	REQ_SEND (req);
		907	}
		908
		909	void
		910	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		911	PPCODE:
		912	{
		913	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		914	int fd = s_fileno_croak (fh, 0);
		915	dREQ;
		916
		917	if (close_pipe < 0)
		918	{
		919	int pipefd [2];
		920
		921	if (pipe (pipefd) < 0
		922	|| close (pipefd [1]) < 0
		923	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		924	abort (); /*D*/
		925
		926	close_pipe = pipefd [0];
		927	}
		928
		929	req->type = EIO_DUP2;
		930	req->int1 = close_pipe;
		931	req->sv2 = newSVsv (fh);
		932	req->int2 = fd;
1558		933
1559	REQ_SEND (req);	934	REQ_SEND (req);
1560	}	935	}
1561		936
1562	void	937	void
1563	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	938	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1564	ALIAS:	939	ALIAS:
1565	aio_read = REQ_READ	940	aio_read = EIO_READ
1566	aio_write = REQ_WRITE	941	aio_write = EIO_WRITE
1567	PROTOTYPE: $$$$$;$
1568	PPCODE:	942	PPCODE:
1569	{	943	{
1570	STRLEN svlen;	944	STRLEN svlen;
		945	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1571	char *svptr = SvPVbyte (data, svlen);	946	char *svptr = SvPVbyte (data, svlen);
1572	UV len = SvUV (length);	947	UV len = SvUV (length);
1573		948
1574	SvUPGRADE (data, SVt_PV);
1575	SvPOK_on (data);
1576
1577	if (dataoffset < 0)	949	if (dataoffset < 0)
1578	dataoffset += svlen;	950	dataoffset += svlen;
1579		951
1580	if (dataoffset < 0 || dataoffset > svlen)	952	if (dataoffset < 0 || dataoffset > svlen)
1581	croak ("dataoffset outside of data scalar");	953	croak ("dataoffset outside of data scalar");
1582		954
1583	if (ix == REQ_WRITE)	955	if (ix == EIO_WRITE)
1584	{	956	{
1585	/* write: check length and adjust. */	957	/* write: check length and adjust. */
1586	if (!SvOK (length) || len + dataoffset > svlen)	958	if (!SvOK (length) || len + dataoffset > svlen)
1587	len = svlen - dataoffset;	959	len = svlen - dataoffset;
1588	}	960	}
1589	else	961	else
1590	{	962	{
1591	/* read: grow scalar as necessary */	963	/* read: check type and grow scalar as necessary */
		964	SvUPGRADE (data, SVt_PV);
1592	svptr = SvGROW (data, len + dataoffset + 1);	965	svptr = SvGROW (data, len + dataoffset + 1);
1593	}	966	}
1594		967
1595	if (len < 0)
1596	croak ("length must not be negative");
1597
1598	{	968	{
1599	dREQ;	969	dREQ;
1600		970
1601	req->type = ix;	971	req->type = ix;
1602	req->sv1 = newSVsv (fh);	972	req->sv1 = newSVsv (fh);
1603	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	973	req->int1 = fd;
1604	: IoOFP (sv_2io (fh)));
1605	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	974	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1606	req->size = len;	975	req->size = len;
1607	req->sv2 = SvREFCNT_inc (data);	976	req->sv2 = SvREFCNT_inc (data);
1608	req->ptr1 = (char *)svptr + dataoffset;	977	req->ptr2 = (char *)svptr + dataoffset;
1609	req->stroffset = dataoffset;	978	req->stroffset = dataoffset;
1610		979
1611	if (!SvREADONLY (data))	980	if (!SvREADONLY (data))
1612	{	981	{
1613	SvREADONLY_on (data);	982	SvREADONLY_on (data);
…		…
1618	}	987	}
1619	}	988	}
1620		989
1621	void	990	void
1622	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	991	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1623	PROTOTYPE: $$;$
1624	PPCODE:	992	PPCODE:
1625	{	993	{
1626	SV *data;	994	SV *data;
1627	dREQ;	995	dREQ;
1628		996
1629	data = newSV (NAME_MAX);
1630	SvPOK_on (data);
1631
1632	req->type = REQ_READLINK;	997	req->type = EIO_READLINK;
1633	req->sv1 = newSVsv (path);	998	req->sv1 = newSVsv (path);
1634	req->ptr2 = SvPVbyte_nolen (req->sv1);	999	req->ptr1 = SvPVbyte_nolen (req->sv1);
1635	req->sv2 = data;
1636	req->ptr1 = SvPVbyte_nolen (data);
1637		1000
1638	REQ_SEND;	1001	REQ_SEND;
1639	}	1002	}
1640		1003
1641	void	1004	void
1642	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1005	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1643	PROTOTYPE: $$$$;$
1644	PPCODE:	1006	PPCODE:
1645	{	1007	{
		1008	int ifd = s_fileno_croak (in_fh , 0);
		1009	int ofd = s_fileno_croak (out_fh, 1);
1646	dREQ;	1010	dREQ;
1647		1011
1648	req->type = REQ_SENDFILE;	1012	req->type = EIO_SENDFILE;
1649	req->sv1 = newSVsv (out_fh);	1013	req->sv1 = newSVsv (out_fh);
1650	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1014	req->int1 = ofd;
1651	req->sv2 = newSVsv (in_fh);	1015	req->sv2 = newSVsv (in_fh);
1652	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1016	req->int2 = ifd;
1653	req->offs = SvVAL64 (in_offset);	1017	req->offs = in_offset;
1654	req->size = length;	1018	req->size = length;
1655		1019
1656	REQ_SEND;	1020	REQ_SEND;
1657	}	1021	}
1658		1022
1659	void	1023	void
1660	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1024	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1661	PROTOTYPE: $$$;$
1662	PPCODE:	1025	PPCODE:
1663	{	1026	{
		1027	int fd = s_fileno_croak (fh, 0);
1664	dREQ;	1028	dREQ;
1665		1029
1666	req->type = REQ_READAHEAD;	1030	req->type = EIO_READAHEAD;
1667	req->sv1 = newSVsv (fh);	1031	req->sv1 = newSVsv (fh);
1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1032	req->int1 = fd;
1669	req->offs = SvVAL64 (offset);	1033	req->offs = offset;
1670	req->size = length;	1034	req->size = length;
1671		1035
1672	REQ_SEND;	1036	REQ_SEND;
1673	}	1037	}
1674		1038
1675	void	1039	void
1676	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1040	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1677	ALIAS:	1041	ALIAS:
1678	aio_stat = REQ_STAT	1042	aio_stat = EIO_STAT
1679	aio_lstat = REQ_LSTAT	1043	aio_lstat = EIO_LSTAT
		1044	aio_statvfs = EIO_STATVFS
1680	PPCODE:	1045	PPCODE:
1681	{	1046	{
1682	dREQ;	1047	dREQ;
1683		1048
1684	req->ptr2 = malloc (sizeof (Stat_t));
1685	if (!req->ptr2)
1686	{
1687	req_destroy (req);
1688	croak ("out of memory during aio_stat statdata allocation");
1689	}
1690
1691	req->flags |= FLAG_PTR2_FREE;
1692	req->sv1 = newSVsv (fh_or_path);	1049	req->sv1 = newSVsv (fh_or_path);
1693		1050
1694	if (SvPOK (fh_or_path))	1051	if (SvPOK (req->sv1))
1695	{	1052	{
1696	req->type = ix;	1053	req->type = ix;
1697	req->ptr1 = SvPVbyte_nolen (req->sv1);	1054	req->ptr1 = SvPVbyte_nolen (req->sv1);
1698	}	1055	}
1699	else	1056	else
1700	{	1057	{
1701	req->type = REQ_FSTAT;	1058	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1702	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1059	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1703	}	1060	}
1704		1061
1705	REQ_SEND;	1062	REQ_SEND;
1706	}	1063	}
…		…
1713		1070
1714	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1071	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1715	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1072	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1716	req->sv1 = newSVsv (fh_or_path);	1073	req->sv1 = newSVsv (fh_or_path);
1717		1074
1718	if (SvPOK (fh_or_path))	1075	if (SvPOK (req->sv1))
1719	{	1076	{
1720	req->type = REQ_UTIME;	1077	req->type = EIO_UTIME;
1721	req->ptr1 = SvPVbyte_nolen (req->sv1);	1078	req->ptr1 = SvPVbyte_nolen (req->sv1);
1722	}	1079	}
1723	else	1080	else
1724	{	1081	{
1725	req->type = REQ_FUTIME;	1082	req->type = EIO_FUTIME;
1726	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1083	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1727	}	1084	}
1728		1085
1729	REQ_SEND;	1086	REQ_SEND;
1730	}	1087	}
…		…
1736	dREQ;	1093	dREQ;
1737		1094
1738	req->sv1 = newSVsv (fh_or_path);	1095	req->sv1 = newSVsv (fh_or_path);
1739	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1096	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1740		1097
1741	if (SvPOK (fh_or_path))	1098	if (SvPOK (req->sv1))
1742	{	1099	{
1743	req->type = REQ_TRUNCATE;	1100	req->type = EIO_TRUNCATE;
1744	req->ptr1 = SvPVbyte_nolen (req->sv1);	1101	req->ptr1 = SvPVbyte_nolen (req->sv1);
1745	}	1102	}
1746	else	1103	else
1747	{	1104	{
1748	req->type = REQ_FTRUNCATE;	1105	req->type = EIO_FTRUNCATE;
1749	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1106	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1750	}	1107	}
1751		1108
1752	REQ_SEND;	1109	REQ_SEND;
1753	}	1110	}
1754		1111
1755	void	1112	void
1756	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1113	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1114	ALIAS:
		1115	aio_chmod = EIO_CHMOD
		1116	aio_mkdir = EIO_MKDIR
1757	PPCODE:	1117	PPCODE:
1758	{	1118	{
1759	dREQ;	1119	dREQ;
1760		1120
1761	req->mode = mode;	1121	req->int2 = mode;
1762	req->sv1 = newSVsv (fh_or_path);	1122	req->sv1 = newSVsv (fh_or_path);
1763		1123
1764	if (SvPOK (fh_or_path))	1124	if (SvPOK (req->sv1))
1765	{	1125	{
1766	req->type = REQ_CHMOD;	1126	req->type = ix;
1767	req->ptr1 = SvPVbyte_nolen (req->sv1);	1127	req->ptr1 = SvPVbyte_nolen (req->sv1);
1768	}	1128	}
1769	else	1129	else
1770	{	1130	{
1771	req->type = REQ_FCHMOD;	1131	req->type = EIO_FCHMOD;
1772	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1132	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1773	}	1133	}
1774		1134
1775	REQ_SEND;	1135	REQ_SEND;
1776	}	1136	}
…		…
1783		1143
1784	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1144	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1785	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1145	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1786	req->sv1 = newSVsv (fh_or_path);	1146	req->sv1 = newSVsv (fh_or_path);
1787		1147
1788	if (SvPOK (fh_or_path))	1148	if (SvPOK (req->sv1))
1789	{	1149	{
1790	req->type = REQ_CHOWN;	1150	req->type = EIO_CHOWN;
1791	req->ptr1 = SvPVbyte_nolen (req->sv1);	1151	req->ptr1 = SvPVbyte_nolen (req->sv1);
1792	}	1152	}
1793	else	1153	else
1794	{	1154	{
1795	req->type = REQ_FCHOWN;	1155	req->type = EIO_FCHOWN;
1796	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1156	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1797	}	1157	}
1798		1158
1799	REQ_SEND;	1159	REQ_SEND;
1800	}	1160	}
1801		1161
1802	void	1162	void
		1163	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1164	PPCODE:
		1165	{
		1166	dREQ;
		1167
		1168	req->type = EIO_READDIR;
		1169	req->sv1 = newSVsv (pathname);
		1170	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1171	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1172
		1173	if (flags & EIO_READDIR_DENTS)
		1174	req->int1 |= EIO_READDIR_CUSTOM2;
		1175
		1176	REQ_SEND;
		1177	}
		1178
		1179	void
1803	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1180	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1804	ALIAS:	1181	ALIAS:
1805	aio_unlink = REQ_UNLINK	1182	aio_unlink = EIO_UNLINK
1806	aio_rmdir = REQ_RMDIR	1183	aio_rmdir = EIO_RMDIR
1807	aio_readdir = REQ_READDIR	1184	aio_readdir = EIO_READDIR
1808	PPCODE:	1185	PPCODE:
1809	{	1186	{
1810	dREQ;	1187	dREQ;
1811		1188
1812	req->type = ix;	1189	req->type = ix;
…		…
1815		1192
1816	REQ_SEND;	1193	REQ_SEND;
1817	}	1194	}
1818		1195
1819	void	1196	void
1820	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1821	PPCODE:
1822	{
1823	dREQ;
1824
1825	req->type = REQ_MKDIR;
1826	req->sv1 = newSVsv (pathname);
1827	req->ptr1 = SvPVbyte_nolen (req->sv1);
1828	req->mode = mode;
1829
1830	REQ_SEND;
1831	}
1832
1833	void
1834	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1197	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1835	ALIAS:	1198	ALIAS:
1836	aio_link = REQ_LINK	1199	aio_link = EIO_LINK
1837	aio_symlink = REQ_SYMLINK	1200	aio_symlink = EIO_SYMLINK
1838	aio_rename = REQ_RENAME	1201	aio_rename = EIO_RENAME
1839	PPCODE:	1202	PPCODE:
1840	{	1203	{
1841	dREQ;	1204	dREQ;
1842		1205
1843	req->type = ix;	1206	req->type = ix;
1844	req->sv2 = newSVsv (oldpath);	1207	req->sv1 = newSVsv (oldpath);
		1208	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1209	req->sv2 = newSVsv (newpath);
1845	req->ptr2 = SvPVbyte_nolen (req->sv2);	1210	req->ptr2 = SvPVbyte_nolen (req->sv2);
1846	req->sv1 = newSVsv (newpath);
1847	req->ptr1 = SvPVbyte_nolen (req->sv1);
1848		1211
1849	REQ_SEND;	1212	REQ_SEND;
1850	}	1213	}
1851		1214
1852	void	1215	void
1853	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1216	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1854	PPCODE:	1217	PPCODE:
1855	{	1218	{
1856	dREQ;	1219	dREQ;
1857		1220
1858	req->type = REQ_MKNOD;	1221	req->type = EIO_MKNOD;
1859	req->sv1 = newSVsv (pathname);	1222	req->sv1 = newSVsv (pathname);
1860	req->ptr1 = SvPVbyte_nolen (req->sv1);	1223	req->ptr1 = SvPVbyte_nolen (req->sv1);
1861	req->mode = (mode_t)mode;	1224	req->int2 = (mode_t)mode;
1862	req->offs = dev;	1225	req->offs = dev;
1863		1226
1864	REQ_SEND;	1227	REQ_SEND;
1865	}	1228	}
1866		1229
1867	void	1230	void
		1231	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1232	ALIAS:
		1233	aio_mtouch = EIO_MTOUCH
		1234	aio_msync = EIO_MSYNC
		1235	PPCODE:
		1236	{
		1237	STRLEN svlen;
		1238	char *svptr = SvPVbyte (data, svlen);
		1239	UV len = SvUV (length);
		1240
		1241	if (offset < 0)
		1242	offset += svlen;
		1243
		1244	if (offset < 0 || offset > svlen)
		1245	croak ("offset outside of scalar");
		1246
		1247	if (!SvOK (length) || len + offset > svlen)
		1248	len = svlen - offset;
		1249
		1250	{
		1251	dREQ;
		1252
		1253	req->type = ix;
		1254	req->sv2 = SvREFCNT_inc (data);
		1255	req->ptr2 = (char *)svptr + offset;
		1256	req->size = len;
		1257	req->int1 = flags;
		1258
		1259	REQ_SEND;
		1260	}
		1261	}
		1262
		1263	void
		1264	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1265	PPCODE:
		1266	{
		1267	STRLEN svlen;
		1268	char *svptr = SvPVbyte (data, svlen);
		1269	UV len = SvUV (length);
		1270
		1271	if (offset < 0)
		1272	offset += svlen;
		1273
		1274	if (offset < 0 || offset > svlen)
		1275	croak ("offset outside of scalar");
		1276
		1277	if (!SvOK (length) || len + offset > svlen)
		1278	len = svlen - offset;
		1279
		1280	{
		1281	dREQ;
		1282
		1283	req->type = EIO_MLOCK;
		1284	req->sv2 = SvREFCNT_inc (data);
		1285	req->ptr2 = (char *)svptr + offset;
		1286	req->size = len;
		1287
		1288	REQ_SEND;
		1289	}
		1290	}
		1291
		1292	void
		1293	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1294	PPCODE:
		1295	{
		1296	dREQ;
		1297
		1298	req->type = EIO_MLOCKALL;
		1299	req->int1 = flags;
		1300
		1301	REQ_SEND;
		1302	}
		1303
		1304	void
1868	aio_busy (double delay, SV *callback=&PL_sv_undef)	1305	aio_busy (double delay, SV *callback=&PL_sv_undef)
1869	PPCODE:	1306	PPCODE:
1870	{	1307	{
1871	dREQ;	1308	dREQ;
1872		1309
1873	req->type = REQ_BUSY;	1310	req->type = EIO_BUSY;
1874	req->nv1 = delay < 0. ? 0. : delay;	1311	req->nv1 = delay < 0. ? 0. : delay;
1875		1312
1876	REQ_SEND;	1313	REQ_SEND;
1877	}	1314	}
1878		1315
1879	void	1316	void
1880	aio_group (SV *callback=&PL_sv_undef)	1317	aio_group (SV *callback=&PL_sv_undef)
1881	PROTOTYPE: ;$
1882	PPCODE:	1318	PPCODE:
1883	{	1319	{
1884	dREQ;	1320	dREQ;
1885		1321
1886	req->type = REQ_GROUP;	1322	req->type = EIO_GROUP;
1887		1323
1888	req_send (req);	1324	req_submit (req);
1889	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1325	XPUSHs (req_sv (req, aio_grp_stash));
1890	}	1326	}
1891		1327
1892	void	1328	void
1893	aio_nop (SV *callback=&PL_sv_undef)	1329	aio_nop (SV *callback=&PL_sv_undef)
1894	ALIAS:	1330	ALIAS:
1895	aio_nop = REQ_NOP	1331	aio_nop = EIO_NOP
1896	aio_sync = REQ_SYNC	1332	aio_sync = EIO_SYNC
1897	PPCODE:	1333	PPCODE:
1898	{	1334	{
1899	dREQ;	1335	dREQ;
1900		1336
1901	req->type = ix;	1337	req->type = ix;
…		…
1903	REQ_SEND;	1339	REQ_SEND;
1904	}	1340	}
1905		1341
1906	int	1342	int
1907	aioreq_pri (int pri = 0)	1343	aioreq_pri (int pri = 0)
1908	PROTOTYPE: ;$
1909	CODE:	1344	CODE:
1910	RETVAL = next_pri - PRI_BIAS;	1345	RETVAL = next_pri;
1911	if (items > 0)	1346	if (items > 0)
1912	{	1347	{
1913	if (pri < PRI_MIN) pri = PRI_MIN;	1348	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1914	if (pri > PRI_MAX) pri = PRI_MAX;	1349	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1915	next_pri = pri + PRI_BIAS;	1350	next_pri = pri;
1916	}	1351	}
1917	OUTPUT:	1352	OUTPUT:
1918	RETVAL	1353	RETVAL
1919		1354
1920	void	1355	void
1921	aioreq_nice (int nice = 0)	1356	aioreq_nice (int nice = 0)
1922	CODE:	1357	CODE:
1923	nice = next_pri - nice;	1358	nice = next_pri - nice;
1924	if (nice < PRI_MIN) nice = PRI_MIN;	1359	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1925	if (nice > PRI_MAX) nice = PRI_MAX;	1360	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1926	next_pri = nice + PRI_BIAS;	1361	next_pri = nice;
1927		1362
1928	void	1363	void
1929	flush ()	1364	flush ()
1930	PROTOTYPE:
1931	CODE:	1365	CODE:
1932	while (nreqs)	1366	while (eio_nreqs ())
1933	{	1367	{
1934	poll_wait ();	1368	poll_wait ();
1935	poll_cb ();	1369	poll_cb ();
1936	}	1370	}
1937		1371
1938	int	1372	int
1939	poll()	1373	poll ()
1940	PROTOTYPE:
1941	CODE:	1374	CODE:
1942	poll_wait ();	1375	poll_wait ();
1943	RETVAL = poll_cb ();	1376	RETVAL = poll_cb ();
1944	OUTPUT:	1377	OUTPUT:
1945	RETVAL	1378	RETVAL
1946		1379
1947	int	1380	int
1948	poll_fileno()	1381	poll_fileno ()
1949	PROTOTYPE:
1950	CODE:	1382	CODE:
1951	RETVAL = respipe [0];	1383	RETVAL = s_epipe_fd (&respipe);
1952	OUTPUT:	1384	OUTPUT:
1953	RETVAL	1385	RETVAL
1954		1386
1955	int	1387	int
1956	poll_cb(...)	1388	poll_cb (...)
1957	PROTOTYPE:	1389	PROTOTYPE:
1958	CODE:	1390	CODE:
1959	RETVAL = poll_cb ();	1391	RETVAL = poll_cb ();
1960	OUTPUT:	1392	OUTPUT:
1961	RETVAL	1393	RETVAL
1962		1394
1963	void	1395	void
1964	poll_wait()	1396	poll_wait ()
1965	PROTOTYPE:
1966	CODE:	1397	CODE:
1967	poll_wait ();	1398	poll_wait ();
1968		1399
1969	void
1970	setsig (int signum = SIGIO)
1971	PROTOTYPE: ;$
1972	CODE:
1973	{
1974	if (block_sig_level)
1975	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1976
1977	X_LOCK (reslock);
1978	main_tid = pthread_self ();
1979	main_sig = signum;
1980	X_UNLOCK (reslock);
1981
1982	if (main_sig && npending)
1983	pthread_kill (main_tid, main_sig);
1984	}
1985
1986	void
1987	aio_block (SV *cb)
1988	PROTOTYPE: &
1989	PPCODE:
1990	{
1991	int count;
1992
1993	block_sig ();
1994	PUSHMARK (SP);
1995	PUTBACK;
1996	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1997	unblock_sig ();
1998
1999	if (SvTRUE (ERRSV))
2000	croak (0);
2001
2002	XSRETURN (count);
2003	}
2004
2005	int	1400	int
2006	nreqs()	1401	nreqs ()
2007	PROTOTYPE:
2008	CODE:	1402	CODE:
2009	RETVAL = nreqs;	1403	RETVAL = eio_nreqs ();
2010	OUTPUT:	1404	OUTPUT:
2011	RETVAL	1405	RETVAL
2012		1406
2013	int	1407	int
2014	nready()	1408	nready ()
2015	PROTOTYPE:
2016	CODE:	1409	CODE:
2017	RETVAL = get_nready ();	1410	RETVAL = eio_nready ();
2018	OUTPUT:	1411	OUTPUT:
2019	RETVAL	1412	RETVAL
2020		1413
2021	int	1414	int
2022	npending()	1415	npending ()
2023	PROTOTYPE:
2024	CODE:	1416	CODE:
2025	RETVAL = get_npending ();	1417	RETVAL = eio_npending ();
2026	OUTPUT:	1418	OUTPUT:
2027	RETVAL	1419	RETVAL
2028		1420
2029	int	1421	int
2030	nthreads()	1422	nthreads ()
2031	PROTOTYPE:
2032	CODE:	1423	CODE:
2033	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1424	RETVAL = eio_nthreads ();
2034	RETVAL = started;
2035	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2036	OUTPUT:	1425	OUTPUT:
2037	RETVAL	1426	RETVAL
2038		1427
		1428	int
		1429	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1430	CODE:
		1431	RETVAL = posix_fadvise (fh, offset, length, advice);
		1432	OUTPUT:
		1433	RETVAL
		1434
		1435	ssize_t
		1436	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1437	CODE:
		1438	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1439	OUTPUT:
		1440	RETVAL
		1441
		1442	void
		1443	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1444	PPCODE:
		1445	sv_unmagic (scalar, MMAP_MAGIC);
		1446	{
		1447	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1448	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1449	if (addr == (void *)-1)
		1450	XSRETURN_NO;
		1451
		1452	sv_force_normal (scalar);
		1453
		1454	/* we store the length in mg_obj, as namlen is I32 :/ */
		1455	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1456	->mg_obj = (SV *)length;
		1457
		1458	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1459
		1460	if (!(prot & PROT_WRITE))
		1461	SvREADONLY_on (scalar);
		1462
		1463	if (SvLEN (scalar))
		1464	Safefree (SvPVX (scalar));
		1465
		1466	SvPVX (scalar) = (char *)addr;
		1467	SvCUR_set (scalar, length);
		1468	SvLEN_set (scalar, 0);
		1469	SvPOK_only (scalar);
		1470
		1471	XSRETURN_YES;
		1472	}
		1473
		1474	void
		1475	munmap (SV *scalar)
		1476	CODE:
		1477	sv_unmagic (scalar, MMAP_MAGIC);
		1478
		1479	int
		1480	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1481	ALIAS:
		1482	mprotect = 1
		1483	CODE:
		1484	{
		1485	STRLEN svlen;
		1486	void *addr = SvPVbyte (scalar, svlen);
		1487	size_t len = SvUV (length);
		1488
		1489	if (offset < 0)
		1490	offset += svlen;
		1491
		1492	if (offset < 0 || offset > svlen)
		1493	croak ("offset outside of scalar");
		1494
		1495	if (!SvOK (length) || len + offset > svlen)
		1496	len = svlen - offset;
		1497
		1498	addr = (void *)(((intptr_t)addr) + offset);
		1499	eio_page_align (&addr, &len);
		1500
		1501	switch (ix)
		1502	{
		1503	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1504	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1505	}
		1506	}
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
		1511	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1512	CODE:
		1513	{
		1514	STRLEN svlen;
		1515	void *addr = SvPVbyte (scalar, svlen);
		1516	size_t len = SvUV (length);
		1517
		1518	if (offset < 0)
		1519	offset += svlen;
		1520
		1521	if (offset < 0 || offset > svlen)
		1522	croak ("offset outside of scalar");
		1523
		1524	if (!SvOK (length) || len + offset > svlen)
		1525	len = svlen - offset;
		1526
		1527	addr = (void *)(((intptr_t)addr) + offset);
		1528	eio_page_align (&addr, &len);
		1529	#if _POSIX_MEMLOCK
		1530	RETVAL = munlock (addr, len);
		1531	#else
		1532	RETVAL = ((errno = ENOSYS), -1);
		1533	#endif
		1534	}
		1535	OUTPUT:
		1536	RETVAL
		1537
		1538	int
		1539	munlockall ()
		1540	CODE:
		1541	#if _POSIX_MEMLOCK
		1542	munlockall ();
		1543	#else
		1544	RETVAL = -1;
		1545	errno = ENOSYS;
		1546	#endif
		1547	OUTPUT:
		1548	RETVAL
		1549
		1550	void _on_next_submit (SV *cb)
		1551	CODE:
		1552	SvREFCNT_dec (on_next_submit);
		1553	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1554
2039	PROTOTYPES: DISABLE	1555	PROTOTYPES: DISABLE
2040		1556
2041	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1557	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2042		1558
2043	void	1559	void
2044	cancel (aio_req_ornot req)	1560	cancel (aio_req_ornot req)
2045	CODE:	1561	CODE:
2046	req_cancel (req);	1562	eio_cancel (req);
2047		1563
2048	void	1564	void
2049	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1565	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2050	CODE:	1566	PPCODE:
		1567	{
		1568	if (GIMME_V != G_VOID)
		1569	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1570
		1571	if (items > 1)
		1572	{
		1573	SV *cb_cv =get_cb (callback);
		1574
2051	SvREFCNT_dec (req->callback);	1575	SvREFCNT_dec (req->callback);
2052	req->callback = newSVsv (callback);	1576	req->callback = SvREFCNT_inc (cb_cv);
		1577	}
		1578	}
2053		1579
2054	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1580	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2055		1581
2056	void	1582	void
2057	add (aio_req grp, ...)	1583	add (aio_req grp, ...)
2058	PPCODE:	1584	PPCODE:
2059	{	1585	{
2060	int i;	1586	int i;
2061	aio_req req;
2062
2063	if (main_sig && !block_sig_level)
2064	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2065		1587
2066	if (grp->int1 == 2)	1588	if (grp->int1 == 2)
2067	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1589	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2068		1590
2069	for (i = 1; i < items; ++i )	1591	for (i = 1; i < items; ++i )
2070	{	1592	{
		1593	aio_req req;
		1594
2071	if (GIMME_V != G_VOID)	1595	if (GIMME_V != G_VOID)
2072	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1596	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2073		1597
2074	req = SvAIO_REQ (ST (i));	1598	req = SvAIO_REQ (ST (i));
2075		1599
2076	if (req)	1600	if (req)
2077	{	1601	eio_grp_add (grp, req);
2078	++grp->size;
2079	req->grp = grp;
2080
2081	req->grp_prev = 0;
2082	req->grp_next = grp->grp_first;
2083
2084	if (grp->grp_first)
2085	grp->grp_first->grp_prev = req;
2086
2087	grp->grp_first = req;
2088	}
2089	}	1602	}
2090	}	1603	}
2091		1604
2092	void	1605	void
2093	cancel_subs (aio_req_ornot req)	1606	cancel_subs (aio_req_ornot req)
…		…
2102	AV *av;	1615	AV *av;
2103		1616
2104	grp->errorno = errno;	1617	grp->errorno = errno;
2105		1618
2106	av = newAV ();	1619	av = newAV ();
		1620	av_extend (av, items - 1);
2107		1621
2108	for (i = 1; i < items; ++i )	1622	for (i = 1; i < items; ++i )
2109	av_push (av, newSVsv (ST (i)));	1623	av_push (av, newSVsv (ST (i)));
2110		1624
2111	SvREFCNT_dec (grp->sv1);	1625	SvREFCNT_dec (grp->sv1);
…		…
2118	grp->errorno = errorno;	1632	grp->errorno = errorno;
2119		1633
2120	void	1634	void
2121	limit (aio_req grp, int limit)	1635	limit (aio_req grp, int limit)
2122	CODE:	1636	CODE:
2123	grp->int2 = limit;	1637	eio_grp_limit (grp, limit);
2124	aio_grp_feed (grp);
2125		1638
2126	void	1639	void
2127	feed (aio_req grp, SV *callback=&PL_sv_undef)	1640	feed (aio_req grp, SV *callback=&PL_sv_undef)
2128	CODE:	1641	CODE:
2129	{	1642	{
2130	SvREFCNT_dec (grp->sv2);	1643	SvREFCNT_dec (grp->sv2);
2131	grp->sv2 = newSVsv (callback);	1644	grp->sv2 = newSVsv (callback);
		1645	grp->feed = aio_grp_feed;
2132		1646
2133	if (grp->int2 <= 0)	1647	if (grp->int2 <= 0)
2134	grp->int2 = 2;	1648	grp->int2 = 2;
2135		1649
2136	aio_grp_feed (grp);	1650	eio_grp_limit (grp, grp->int2);
2137	}	1651	}
2138		1652

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