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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.108 by root, Thu Oct 4 12:50:35 2007 UTC vs.
Revision 1.173 by root, Mon Sep 13 01:59:05 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_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 ()
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig ()
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready ()
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending ()
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads ()
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb ();
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	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	XPUSHs (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);	545	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	546	SPAGAIN;
		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;
588		552
589	FREETMPS;	553	FREETMPS;
590	LEAVE;	554	LEAVE;
		555
		556	PUTBACK;
591	}	557	}
592		558
593	if (req->grp)
594	{
595	aio_req grp = req->grp;
596
597	/* unlink request */
598	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
599	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
600
601	if (grp->grp_first == req)
602	grp->grp_first = req->grp_next;
603
604	aio_grp_dec (grp);
605	}
606
607	return !SvTRUE (ERRSV);	559	return !!SvTRUE (ERRSV);
608	}	560	}
609		561
610	static void req_destroy (aio_req req)	562	static void req_destroy (aio_req req)
611	{	563	{
612	if (req->self)	564	if (req->self)
…		…
617		569
618	SvREFCNT_dec (req->sv1);	570	SvREFCNT_dec (req->sv1);
619	SvREFCNT_dec (req->sv2);	571	SvREFCNT_dec (req->sv2);
620	SvREFCNT_dec (req->callback);	572	SvREFCNT_dec (req->callback);
621		573
622	if (req->flags & FLAG_PTR2_FREE)
623	free (req->ptr2);
624
625	Safefree (req);	574	Safefree (req);
626	}	575	}
627		576
628	static void req_cancel_subs (aio_req grp)	577	static void req_cancel_subs (aio_req grp)
629	{	578	{
630	aio_req sub;	579	aio_req sub;
631		580
632	if (grp->type != REQ_GROUP)	581	if (grp->type != EIO_GROUP)
633	return;	582	return;
634		583
635	SvREFCNT_dec (grp->sv2);	584	SvREFCNT_dec (grp->sv2);
636	grp->sv2 = 0;	585	grp->sv2 = 0;
637		586
638	for (sub = grp->grp_first; sub; sub = sub->grp_next)	587	eio_grp_cancel (grp);
639	req_cancel (sub);
640	}	588	}
641
642	static void req_cancel (aio_req req)
643	{
644	req->flags |= FLAG_CANCELLED;
645
646	req_cancel_subs (req);
647	}
648
649	#ifdef USE_SOCKETS_AS_HANDLES
650	# define TO_SOCKET(x) (win32_get_osfhandle (x))
651	#else
652	# define TO_SOCKET(x) (x)
653	#endif
654		589
655	static void	590	static void
656	create_respipe ()	591	create_respipe (void)
657	{	592	{
658	int old_readfd = respipe [0];
659
660	if (respipe [1] >= 0)
661	respipe_close (TO_SOCKET (respipe [1]));
662
663	#ifdef _WIN32
664	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
665	#else
666	if (pipe (respipe))	593	if (s_epipe_renew (&respipe))
667	#endif
668	croak ("unable to initialize result pipe");	594	croak ("IO::AIO: unable to initialize result pipe");
669
670	if (old_readfd >= 0)
671	{
672	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
673	croak ("unable to initialize result pipe(2)");
674
675	respipe_close (respipe [0]);
676	respipe [0] = old_readfd;
677	}
678
679	#ifdef _WIN32
680	int arg = 1;
681	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
682	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
683	#else
684	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
685	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
686	#endif
687	croak ("unable to initialize result pipe(3)");
688
689	respipe_osf [0] = TO_SOCKET (respipe [0]);
690	respipe_osf [1] = TO_SOCKET (respipe [1]);
691	}	595	}
692		596
693	X_THREAD_PROC (aio_proc);
694
695	static void start_thread (void)
696	{
697	worker *wrk = calloc (1, sizeof (worker));
698
699	if (!wrk)
700	croak ("unable to allocate worker thread data");
701
702	X_LOCK (wrklock);
703
704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
705	{
706	wrk->prev = &wrk_first;
707	wrk->next = wrk_first.next;
708	wrk_first.next->prev = wrk;
709	wrk_first.next = wrk;
710	++started;
711	}
712	else
713	free (wrk);
714
715	X_UNLOCK (wrklock);
716	}
717
718	static void maybe_start_thread ()
719	{
720	if (get_nthreads () >= wanted)
721	return;
722
723	/* todo: maybe use idle here, but might be less exact */
724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
725	return;
726
727	start_thread ();
728	}
729
730	static void req_send (aio_req req)
731	{
732	block_sig ();
733
734	++nreqs;
735
736	X_LOCK (reqlock);
737	++nready;
738	reqq_push (&req_queue, req);
739	X_COND_SIGNAL (reqwait);
740	X_UNLOCK (reqlock);
741
742	unblock_sig ();
743
744	maybe_start_thread ();
745	}
746
747	static void end_thread (void)
748	{
749	aio_req req;
750
751	Newz (0, req, 1, aio_cb);
752
753	req->type = REQ_QUIT;
754	req->pri = PRI_MAX + PRI_BIAS;
755
756	X_LOCK (reqlock);
757	reqq_push (&req_queue, req);
758	X_COND_SIGNAL (reqwait);
759	X_UNLOCK (reqlock);
760
761	X_LOCK (wrklock);
762	--started;
763	X_UNLOCK (wrklock);
764	}
765
766	static void set_max_idle (int nthreads)
767	{
768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
769	max_idle = nthreads <= 0 ? 1 : nthreads;
770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
771	}
772
773	static void min_parallel (int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void max_parallel (int nthreads)
780	{
781	if (wanted > nthreads)
782	wanted = nthreads;
783
784	while (started > wanted)
785	end_thread ();
786	}
787
788	static void poll_wait ()	597	static void poll_wait (void)
789	{	598	{
790	fd_set rfd;
791
792	while (nreqs)	599	while (eio_nreqs ())
793	{	600	{
794	int size;	601	int size;
795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	602
		603	X_LOCK (reslock);
796	size = res_queue.size;	604	size = res_queue.size;
797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	605	X_UNLOCK (reslock);
798		606
799	if (size)	607	if (size)
800	return;	608	return;
801		609
802	maybe_start_thread ();	610	etp_maybe_start_thread ();
803		611
804	FD_ZERO (&rfd);	612	s_epipe_wait (&respipe);
805	FD_SET (respipe [0], &rfd);
806
807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
808	}	613	}
809	}	614	}
810		615
811	static int poll_cb ()	616	static int poll_cb (void)
812	{	617	{
813	dSP;
814	int count = 0;
815	int maxreqs = max_poll_reqs;
816	int do_croak = 0;
817	struct timeval tv_start, tv_now;
818	aio_req req;
819
820	if (max_poll_time)
821	gettimeofday (&tv_start, 0);
822
823	block_sig ();
824
825	for (;;)	618	for (;;)
826	{	619	{
827	for (;;)	620	int res = eio_poll ();
828	{
829	maybe_start_thread ();
830		621
831	X_LOCK (reslock);	622	if (res > 0)
832	req = reqq_shift (&res_queue);
833
834	if (req)
835	{
836	--npending;
837
838	if (!res_queue.size)
839	{
840	/* read any signals sent by the worker threads */
841	char buf [4];
842	while (respipe_read (respipe [0], buf, 4) == 4)
843	;
844	}
845	}
846
847	X_UNLOCK (reslock);
848
849	if (!req)
850	break;
851
852	--nreqs;
853
854	if (req->type == REQ_GROUP && req->size)
855	{
856	req->int1 = 1; /* mark request as delayed */
857	continue;
858	}
859	else
860	{
861	if (!req_invoke (req))
862	{
863	req_destroy (req);
864	unblock_sig ();
865	croak (0);	623	croak (0);
866	}
867		624
868	count++;	625	if (!max_outstanding || max_outstanding > eio_nreqs ())
869	}	626	return res;
870
871	req_destroy (req);
872
873	if (maxreqs && !--maxreqs)
874	break;
875
876	if (max_poll_time)
877	{
878	gettimeofday (&tv_now, 0);
879
880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
881	break;
882	}
883	}
884
885	if (nreqs <= max_outstanding)
886	break;
887		627
888	poll_wait ();	628	poll_wait ();
889
890	++maxreqs;
891	}	629	}
		630	}
892		631
893	unblock_sig ();	632	static void atfork_child (void)
894	return count;	633	{
		634	create_respipe ();
895	}	635	}
896		636
897	/*****************************************************************************/	637	/*****************************************************************************/
898	/* work around various missing functions */
899		638
900	#if !HAVE_PREADWRITE	639	#if !_POSIX_MAPPED_FILES
901	# define pread aio_pread	640	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
902	# define pwrite aio_pwrite	641	# define munmap(addr,length) (errno = ENOSYS, -1)
903		642	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
904	/*
905	* make our pread/pwrite safe against themselves, but not against
906	* normal read/write by using a mutex. slows down execution a lot,
907	* but that's your problem, not mine.
908	*/
909	static mutex_t preadwritelock = X_MUTEX_INIT;
910
911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
912	{
913	ssize_t res;
914	off_t ooffset;
915
916	X_LOCK (preadwritelock);
917	ooffset = lseek (fd, 0, SEEK_CUR);
918	lseek (fd, offset, SEEK_SET);
919	res = read (fd, buf, count);
920	lseek (fd, ooffset, SEEK_SET);
921	X_UNLOCK (preadwritelock);
922
923	return res;
924	}
925
926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
927	{
928	ssize_t res;
929	off_t ooffset;
930
931	X_LOCK (preadwritelock);
932	ooffset = lseek (fd, 0, SEEK_CUR);
933	lseek (fd, offset, SEEK_SET);
934	res = write (fd, buf, count);
935	lseek (fd, offset, SEEK_SET);
936	X_UNLOCK (preadwritelock);
937
938	return res;
939	}
940	#endif
941
942	#ifndef HAVE_FUTIMES
943
944	# define utimes(path,times) aio_utimes (path, times)
945	# define futimes(fd,times) aio_futimes (fd, times)
946
947	int aio_utimes (const char *filename, const struct timeval times[2])
948	{
949	if (times)
950	{
951	struct utimbuf buf;
952
953	buf.actime = times[0].tv_sec;
954	buf.modtime = times[1].tv_sec;
955
956	return utime (filename, &buf);
957	}
958	else
959	return utime (filename, 0);
960	}
961
962	int aio_futimes (int fd, const struct timeval tv[2])
963	{
964	errno = ENOSYS;
965	return -1;
966	}
967
968	#endif
969
970	#if !HAVE_FDATASYNC
971	# define fdatasync fsync
972	#endif
973
974	#if !HAVE_READAHEAD
975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
976
977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
978	{
979	size_t todo = count;
980	dBUF;
981
982	while (todo > 0)
983	{
984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
985
986	pread (fd, aio_buf, len, offset);
987	offset += len;
988	todo -= len;
989	}
990
991	errno = 0;
992	return count;
993	}
994
995	#endif
996
997	#if !HAVE_READDIR_R
998	# define readdir_r aio_readdir_r
999
1000	static mutex_t readdirlock = X_MUTEX_INIT;
1001
1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1003	{
1004	X_DIRENT *e;
1005	int errorno;
1006
1007	X_LOCK (readdirlock);
1008
1009	e = readdir (dirp);
1010	errorno = errno;
1011
1012	if (e)
1013	{
1014	*res = ent;
1015	strcpy (ent->d_name, e->d_name);
1016	}
1017	else
1018	*res = 0;
1019
1020	X_UNLOCK (readdirlock);
1021
1022	errno = errorno;
1023	return e ? 0 : -1;
1024	}
1025	#endif
1026
1027	/* sendfile always needs emulation */
1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1029	{
1030	ssize_t res;
1031
1032	if (!count)
1033	return 0;
1034
1035	#if HAVE_SENDFILE
1036	# if __linux
1037	res = sendfile (ofd, ifd, &offset, count);
1038
1039	# elif __freebsd
1040	/*
1041	* Of course, the freebsd sendfile is a dire hack with no thoughts
1042	* wasted on making it similar to other I/O functions.
1043	*/
1044	{
1045	off_t sbytes;
1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1047
1048	if (res < 0 && sbytes)
1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1050	res = sbytes;
1051	}
1052
1053	# elif __hpux
1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
1055
1056	# elif __solaris
1057	{
1058	struct sendfilevec vec;
1059	size_t sbytes;
1060
1061	vec.sfv_fd = ifd;
1062	vec.sfv_flag = 0;
1063	vec.sfv_off = offset;
1064	vec.sfv_len = count;
1065
1066	res = sendfilev (ofd, &vec, 1, &sbytes);
1067
1068	if (res < 0 && sbytes)
1069	res = sbytes;
1070	}
1071
1072	# endif	643	#endif
1073	#else
1074	res = -1;
1075	errno = ENOSYS;
1076	#endif
1077		644
1078	if (res < 0	645	#define MMAP_MAGIC PERL_MAGIC_ext
1079	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1080	#if __solaris
1081	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1082	#endif
1083	)
1084	)
1085	{
1086	/* emulate sendfile. this is a major pain in the ass */
1087	dBUF;
1088		646
1089	res = 0;	647	static int
		648	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		649	{
		650	int old_errno = errno;
		651	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		652	errno = old_errno;
1090		653
1091	while (count)	654	mg->mg_obj = 0; /* just in case */
1092	{
1093	ssize_t cnt;
1094
1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1096		655
1097	if (cnt <= 0)	656	SvREADONLY_off (sv);
1098	{
1099	if (cnt && !res) res = -1;
1100	break;
1101	}
1102		657
1103	cnt = write (ofd, aio_buf, cnt);	658	if (SvPVX (sv) != mg->mg_ptr)
		659	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1104		660
1105	if (cnt <= 0)	661	SvCUR_set (sv, 0);
1106	{	662	SvPVX (sv) = 0;
1107	if (cnt && !res) res = -1;	663	SvOK_off (sv);
1108	break;
1109	}
1110		664
1111	offset += cnt;
1112	res += cnt;
1113	count -= cnt;
1114	}
1115	}
1116
1117	return res;	665	return 0;
1118	}	666	}
1119		667
1120	/* read a full directory */	668	static MGVTBL mmap_vtbl = {
1121	static void scandir_ (aio_req req, worker *self)	669	0, 0, 0, 0, mmap_free
1122	{	670	};
1123	DIR *dirp;
1124	union
1125	{
1126	X_DIRENT d;
1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1128	} *u;
1129	X_DIRENT *entp;
1130	char *name, *names;
1131	int memlen = 4096;
1132	int memofs = 0;
1133	int res = 0;
1134
1135	X_LOCK (wrklock);
1136	self->dirp = dirp = opendir (req->ptr1);
1137	self->dbuf = u = malloc (sizeof (*u));
1138	req->flags |= FLAG_PTR2_FREE;
1139	req->ptr2 = names = malloc (memlen);
1140	X_UNLOCK (wrklock);
1141
1142	if (dirp && u && names)
1143	for (;;)
1144	{
1145	errno = 0;
1146	readdir_r (dirp, &u->d, &entp);
1147
1148	if (!entp)
1149	break;
1150
1151	name = entp->d_name;
1152
1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1154	{
1155	int len = strlen (name) + 1;
1156
1157	res++;
1158
1159	while (memofs + len > memlen)
1160	{
1161	memlen *= 2;
1162	X_LOCK (wrklock);
1163	req->ptr2 = names = realloc (names, memlen);
1164	X_UNLOCK (wrklock);
1165
1166	if (!names)
1167	break;
1168	}
1169
1170	memcpy (names + memofs, name, len);
1171	memofs += len;
1172	}
1173	}
1174
1175	if (errno)
1176	res = -1;
1177
1178	req->result = res;
1179	}
1180		671
1181	/*****************************************************************************/	672	/*****************************************************************************/
1182		673
1183	X_THREAD_PROC (aio_proc)	674	static SV *
		675	get_cb (SV *cb_sv)
1184	{	676	{
1185	{//D	677	SvGETMAGIC (cb_sv);
1186	aio_req req;	678	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1187	struct timespec ts;
1188	worker *self = (worker *)thr_arg;
1189
1190	/* try to distribute timeouts somewhat randomly */
1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1192
1193	for (;;)
1194	{
1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1196
1197	X_LOCK (reqlock);
1198
1199	for (;;)
1200	{
1201	self->req = req = reqq_shift (&req_queue);
1202
1203	if (req)
1204	break;
1205
1206	++idle;
1207
1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1209	== ETIMEDOUT)
1210	{
1211	if (idle > max_idle)
1212	{
1213	--idle;
1214	X_UNLOCK (reqlock);
1215	X_LOCK (wrklock);
1216	--started;
1217	X_UNLOCK (wrklock);
1218	goto quit;
1219	}
1220
1221	/* we are allowed to idle, so do so without any timeout */
1222	X_COND_WAIT (reqwait, reqlock);
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224	}
1225
1226	--idle;
1227	}
1228
1229	--nready;
1230
1231	X_UNLOCK (reqlock);
1232
1233	errno = 0; /* strictly unnecessary */
1234
1235	if (!(req->flags & FLAG_CANCELLED))
1236	switch (req->type)
1237	{
1238	case REQ_READ: req->result = req->offs >= 0
1239	? pread (req->int1, req->ptr1, req->size, req->offs)
1240	: read (req->int1, req->ptr1, req->size); break;
1241	case REQ_WRITE: req->result = req->offs >= 0
1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1243	: write (req->int1, req->ptr1, req->size); break;
1244
1245	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1247
1248	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1249	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1251
1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1258
1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1269
1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
1272	case REQ_READDIR: scandir_ (req, self); break;
1273
1274	case REQ_BUSY:
1275	#ifdef _WIN32
1276	Sleep (req->nv1 * 1000.);
1277	#else
1278	{
1279	struct timeval tv;
1280
1281	tv.tv_sec = req->nv1;
1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1283
1284	req->result = select (0, 0, 0, 0, &tv);
1285	}
1286	#endif
1287	break;
1288
1289	case REQ_UTIME:
1290	case REQ_FUTIME:
1291	{
1292	struct timeval tv[2];
1293	struct timeval *times;
1294
1295	if (req->nv1 != -1. || req->nv2 != -1.)
1296	{
1297	tv[0].tv_sec = req->nv1;
1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1299	tv[1].tv_sec = req->nv2;
1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1301
1302	times = tv;
1303	}
1304	else
1305	times = 0;
1306
1307
1308	req->result = req->type == REQ_FUTIME
1309	? futimes (req->int1, times)
1310	: utimes (req->ptr1, times);
1311	}
1312
1313	case REQ_GROUP:
1314	case REQ_NOP:
1315	break;
1316
1317	case REQ_QUIT:
1318	goto quit;
1319
1320	default:
1321	req->result = -1;
1322	break;
1323	}
1324
1325	req->errorno = errno;
1326
1327	X_LOCK (reslock);
1328
1329	++npending;
1330
1331	if (!reqq_push (&res_queue, req))
1332	{
1333	/* write a dummy byte to the pipe so fh becomes ready */
1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1335
1336	/* optionally signal the main thread asynchronously */
1337	if (main_sig)
1338	pthread_kill (main_tid, main_sig);
1339	}
1340
1341	self->req = 0;
1342	worker_clear (self);
1343
1344	X_UNLOCK (reslock);
1345	}
1346
1347	quit:
1348	X_LOCK (wrklock);
1349	worker_free (self);
1350	X_UNLOCK (wrklock);
1351
1352	return 0;
1353	}//D
1354	}
1355
1356	/*****************************************************************************/
1357
1358	static void atfork_prepare (void)
1359	{
1360	X_LOCK (wrklock);
1361	X_LOCK (reqlock);
1362	X_LOCK (reslock);
1363	#if !HAVE_PREADWRITE
1364	X_LOCK (preadwritelock);
1365	#endif
1366	#if !HAVE_READDIR_R
1367	X_LOCK (readdirlock);
1368	#endif
1369	}
1370
1371	static void atfork_parent (void)
1372	{
1373	#if !HAVE_READDIR_R
1374	X_UNLOCK (readdirlock);
1375	#endif
1376	#if !HAVE_PREADWRITE
1377	X_UNLOCK (preadwritelock);
1378	#endif
1379	X_UNLOCK (reslock);
1380	X_UNLOCK (reqlock);
1381	X_UNLOCK (wrklock);
1382	}
1383
1384	static void atfork_child (void)
1385	{
1386	aio_req prv;
1387
1388	while (prv = reqq_shift (&req_queue))
1389	req_destroy (prv);
1390
1391	while (prv = reqq_shift (&res_queue))
1392	req_destroy (prv);
1393
1394	while (wrk_first.next != &wrk_first)
1395	{
1396	worker *wrk = wrk_first.next;
1397
1398	if (wrk->req)
1399	req_destroy (wrk->req);
1400
1401	worker_clear (wrk);
1402	worker_free (wrk);
1403	}
1404
1405	started = 0;
1406	idle = 0;
1407	nreqs = 0;
1408	nready = 0;
1409	npending = 0;
1410
1411	create_respipe ();
1412
1413	atfork_parent ();
1414	}	679	}
1415		680
1416	#define dREQ \	681	#define dREQ \
		682	SV *cb_cv; \
1417	aio_req req; \	683	aio_req req; \
1418	int req_pri = next_pri; \	684	int req_pri = next_pri; \
1419	next_pri = DEFAULT_PRI + PRI_BIAS; \	685	next_pri = EIO_PRI_DEFAULT; \
1420	\	686	\
1421	if (SvOK (callback) && !SvROK (callback)) \	687	cb_cv = get_cb (callback); \
1422	croak ("callback must be undef or of reference type"); \
1423	\	688	\
1424	Newz (0, req, 1, aio_cb); \	689	Newz (0, req, 1, eio_req); \
1425	if (!req) \	690	if (!req) \
1426	croak ("out of memory during aio_req allocation"); \	691	croak ("out of memory during eio_req allocation"); \
1427	\	692	\
1428	req->callback = newSVsv (callback); \	693	req->callback = SvREFCNT_inc (cb_cv); \
1429	req->pri = req_pri	694	req->pri = req_pri
1430		695
1431	#define REQ_SEND \	696	#define REQ_SEND \
		697	PUTBACK; \
1432	req_send (req); \	698	req_submit (req); \
		699	SPAGAIN; \
1433	\	700	\
1434	if (GIMME_V != G_VOID) \	701	if (GIMME_V != G_VOID) \
1435	XPUSHs (req_sv (req, AIO_REQ_KLASS));	702	XPUSHs (req_sv (req, aio_req_stash));
1436		703
1437	MODULE = IO::AIO PACKAGE = IO::AIO	704	MODULE = IO::AIO PACKAGE = IO::AIO
1438		705
1439	PROTOTYPES: ENABLE	706	PROTOTYPES: ENABLE
1440		707
1441	BOOT:	708	BOOT:
1442	{	709	{
1443	stash = gv_stashpv ("IO::AIO", 1);	710	static const struct {
1444		711	const char *name;
1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	712	IV iv;
1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	713	} *civ, const_iv[] = {
1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	714	# define const_niv(name, value) { # name, (IV) value },
1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	715	# define const_iv(name) { # name, (IV) name },
1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	716	# define const_eio(name) { # name, (IV) EIO_ ## name },
		717	const_iv (EXDEV)
		718	const_iv (ENOSYS)
		719	const_iv (O_RDONLY)
		720	const_iv (O_WRONLY)
		721	const_iv (O_RDWR)
		722	const_iv (O_CREAT)
		723	const_iv (O_TRUNC)
		724	const_iv (O_EXCL)
		725	const_iv (O_APPEND)
1450	#ifdef _WIN32	726	#ifndef _WIN32
1451	X_MUTEX_CHECK (wrklock);	727	const_iv (S_IFIFO)
1452	X_MUTEX_CHECK (reslock);
1453	X_MUTEX_CHECK (reqlock);
1454	X_MUTEX_CHECK (reqwait);
1455	X_MUTEX_CHECK (preadwritelock);
1456	X_MUTEX_CHECK (readdirlock);
1457
1458	X_COND_CHECK (reqwait);
1459	#else
1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1462	#endif	728	#endif
		729	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		730	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		731	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		732	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		733	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		734	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1463		735
		736	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		737	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		738	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		739	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		740	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		741
		742	const_iv (ST_RDONLY)
		743	const_iv (ST_NOSUID)
		744	const_iv (ST_NODEV)
		745	const_iv (ST_NOEXEC)
		746	const_iv (ST_SYNCHRONOUS)
		747	const_iv (ST_MANDLOCK)
		748	const_iv (ST_WRITE)
		749	const_iv (ST_APPEND)
		750	const_iv (ST_IMMUTABLE)
		751	const_iv (ST_NOATIME)
		752	const_iv (ST_NODIRATIME)
		753	const_iv (ST_RELATIME)
		754
		755	const_iv (PROT_NONE)
		756	const_iv (PROT_EXEC)
		757	const_iv (PROT_READ)
		758	const_iv (PROT_WRITE)
		759
		760	/*const_iv (MAP_FIXED)*/
		761	const_iv (MAP_PRIVATE)
		762	const_iv (MAP_SHARED)
		763	const_iv (MAP_ANONYMOUS)
		764
		765	/* linuxish */
		766	const_iv (MAP_HUGETLB)
		767	const_iv (MAP_LOCKED)
		768	const_iv (MAP_NORESERVE)
		769	const_iv (MAP_POPULATE)
		770	const_iv (MAP_NONBLOCK)
		771
		772	const_eio (MCL_FUTURE)
		773	const_eio (MCL_CURRENT)
		774
		775	const_eio (MS_ASYNC)
		776	const_eio (MS_INVALIDATE)
		777	const_eio (MS_SYNC)
		778
		779	const_eio (MT_MODIFY)
		780
		781	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		782	const_eio (SYNC_FILE_RANGE_WRITE)
		783	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		784
		785	const_eio (READDIR_DENTS)
		786	const_eio (READDIR_DIRS_FIRST)
		787	const_eio (READDIR_STAT_ORDER)
		788	const_eio (READDIR_FOUND_UNKNOWN)
		789
		790	const_eio (DT_UNKNOWN)
		791	const_eio (DT_FIFO)
		792	const_eio (DT_CHR)
		793	const_eio (DT_DIR)
		794	const_eio (DT_BLK)
		795	const_eio (DT_REG)
		796	const_eio (DT_LNK)
		797	const_eio (DT_SOCK)
		798	const_eio (DT_WHT)
		799	};
		800
		801	aio_stash = gv_stashpv ("IO::AIO" , 1);
		802	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		803	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		804
		805	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		806	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		807
		808	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		809
1464	create_respipe ();	810	create_respipe ();
1465		811
1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	812	if (eio_init (want_poll, done_poll) < 0)
		813	croak ("IO::AIO: unable to initialise eio library");
		814
		815	/* atfork child called in fifo order, so before eio's handler */
		816	X_THREAD_ATFORK (0, 0, atfork_child);
1467	}	817	}
1468		818
1469	void	819	void
1470	max_poll_reqs (int nreqs)	820	max_poll_reqs (int nreqs)
1471	PROTOTYPE: $	821	PROTOTYPE: $
1472	CODE:	822	CODE:
1473	max_poll_reqs = nreqs;	823	eio_set_max_poll_reqs (nreqs);
1474		824
1475	void	825	void
1476	max_poll_time (double nseconds)	826	max_poll_time (double nseconds)
1477	PROTOTYPE: $	827	PROTOTYPE: $
1478	CODE:	828	CODE:
1479	max_poll_time = nseconds * AIO_TICKS;	829	eio_set_max_poll_time (nseconds);
1480		830
1481	void	831	void
1482	min_parallel (int nthreads)	832	min_parallel (int nthreads)
1483	PROTOTYPE: $	833	PROTOTYPE: $
		834	CODE:
		835	eio_set_min_parallel (nthreads);
1484		836
1485	void	837	void
1486	max_parallel (int nthreads)	838	max_parallel (int nthreads)
1487	PROTOTYPE: $	839	PROTOTYPE: $
		840	CODE:
		841	eio_set_max_parallel (nthreads);
1488		842
1489	void	843	void
1490	max_idle (int nthreads)	844	max_idle (int nthreads)
1491	PROTOTYPE: $	845	PROTOTYPE: $
1492	CODE:	846	CODE:
1493	set_max_idle (nthreads);	847	eio_set_max_idle (nthreads);
1494		848
1495	int	849	void
1496	max_outstanding (int maxreqs)	850	max_outstanding (int maxreqs)
1497	PROTOTYPE: $	851	PROTOTYPE: $
1498	CODE:	852	CODE:
1499	RETVAL = max_outstanding;
1500	max_outstanding = maxreqs;	853	max_outstanding = maxreqs;
1501	OUTPUT:
1502	RETVAL
1503		854
1504	void	855	void
1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	856	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$;$
1507	PPCODE:	857	PPCODE:
1508	{	858	{
1509	dREQ;	859	dREQ;
1510		860
1511	req->type = REQ_OPEN;	861	req->type = EIO_OPEN;
1512	req->sv1 = newSVsv (pathname);	862	req->sv1 = newSVsv (pathname);
1513	req->ptr1 = SvPVbyte_nolen (req->sv1);	863	req->ptr1 = SvPVbyte_nolen (req->sv1);
1514	req->int1 = flags;	864	req->int1 = flags;
1515	req->mode = mode;	865	req->int2 = mode;
1516		866
1517	REQ_SEND;	867	REQ_SEND;
1518	}	868	}
1519		869
1520	void	870	void
1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	871	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1522	PROTOTYPE: $;$
1523	ALIAS:	872	ALIAS:
1524	aio_fsync = REQ_FSYNC	873	aio_fsync = EIO_FSYNC
1525	aio_fdatasync = REQ_FDATASYNC	874	aio_fdatasync = EIO_FDATASYNC
1526	PPCODE:	875	PPCODE:
1527	{	876	{
		877	int fd = s_fileno_croak (fh, 0);
1528	dREQ;	878	dREQ;
1529		879
1530	req->type = ix;	880	req->type = ix;
1531	req->sv1 = newSVsv (fh);	881	req->sv1 = newSVsv (fh);
1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	882	req->int1 = fd;
1533		883
1534	REQ_SEND (req);	884	REQ_SEND (req);
1535	}	885	}
1536		886
1537	void	887	void
		888	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		889	PPCODE:
		890	{
		891	int fd = s_fileno_croak (fh, 0);
		892	dREQ;
		893
		894	req->type = EIO_SYNC_FILE_RANGE;
		895	req->sv1 = newSVsv (fh);
		896	req->int1 = fd;
		897	req->offs = offset;
		898	req->size = nbytes;
		899	req->int2 = flags;
		900
		901	REQ_SEND (req);
		902	}
		903
		904	void
1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)	905	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $;$
1540	PPCODE:	906	PPCODE:
1541	{	907	{
1542	PerlIO *io = IoIFP (sv_2io (fh));	908	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
1543	int fd = PerlIO_fileno (io);	909	int fd = s_fileno_croak (fh, 0);
1544
1545	if (fd < 0)
1546	croak ("aio_close called with fd-less filehandle");
1547
1548	PerlIO_binmode (aTHX_ io, 0, 0, 0);
1549
1550	{
1551	dREQ;	910	dREQ;
1552		911
		912	if (close_pipe < 0)
		913	{
		914	int pipefd [2];
		915
		916	if (pipe (pipefd) < 0
		917	|| close (pipefd [1]) < 0
		918	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		919	abort (); /*D*/
		920
		921	close_pipe = pipefd [0];
		922	}
		923
1553	req->type = REQ_CLOSE;	924	req->type = EIO_DUP2;
		925	req->int1 = close_pipe;
1554	req->sv1 = newSVsv (fh);	926	req->sv2 = newSVsv (fh);
1555	req->ptr1 = (void *)io;	927	req->int2 = fd;
1556		928
1557	REQ_SEND (req);	929	REQ_SEND (req);
1558	}
1559	}	930	}
1560		931
1561	void	932	void
1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	933	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1563	ALIAS:	934	ALIAS:
1564	aio_read = REQ_READ	935	aio_read = EIO_READ
1565	aio_write = REQ_WRITE	936	aio_write = EIO_WRITE
1566	PROTOTYPE: $$$$$;$
1567	PPCODE:	937	PPCODE:
1568	{	938	{
1569	STRLEN svlen;	939	STRLEN svlen;
		940	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1570	char *svptr = SvPVbyte (data, svlen);	941	char *svptr = SvPVbyte (data, svlen);
1571	UV len = SvUV (length);	942	UV len = SvUV (length);
1572		943
1573	SvUPGRADE (data, SVt_PV);
1574	SvPOK_on (data);
1575
1576	if (dataoffset < 0)	944	if (dataoffset < 0)
1577	dataoffset += svlen;	945	dataoffset += svlen;
1578		946
1579	if (dataoffset < 0 || dataoffset > svlen)	947	if (dataoffset < 0 || dataoffset > svlen)
1580	croak ("dataoffset outside of data scalar");	948	croak ("dataoffset outside of data scalar");
1581		949
1582	if (ix == REQ_WRITE)	950	if (ix == EIO_WRITE)
1583	{	951	{
1584	/* write: check length and adjust. */	952	/* write: check length and adjust. */
1585	if (!SvOK (length) || len + dataoffset > svlen)	953	if (!SvOK (length) || len + dataoffset > svlen)
1586	len = svlen - dataoffset;	954	len = svlen - dataoffset;
1587	}	955	}
1588	else	956	else
1589	{	957	{
1590	/* read: grow scalar as necessary */	958	/* read: check type and grow scalar as necessary */
		959	SvUPGRADE (data, SVt_PV);
1591	svptr = SvGROW (data, len + dataoffset + 1);	960	svptr = SvGROW (data, len + dataoffset + 1);
1592	}	961	}
1593		962
1594	if (len < 0)
1595	croak ("length must not be negative");
1596
1597	{	963	{
1598	dREQ;	964	dREQ;
1599		965
1600	req->type = ix;	966	req->type = ix;
1601	req->sv1 = newSVsv (fh);	967	req->sv1 = newSVsv (fh);
1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	968	req->int1 = fd;
1603	: IoOFP (sv_2io (fh)));
1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	969	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1605	req->size = len;	970	req->size = len;
1606	req->sv2 = SvREFCNT_inc (data);	971	req->sv2 = SvREFCNT_inc (data);
1607	req->ptr1 = (char *)svptr + dataoffset;	972	req->ptr2 = (char *)svptr + dataoffset;
1608	req->stroffset = dataoffset;	973	req->stroffset = dataoffset;
1609		974
1610	if (!SvREADONLY (data))	975	if (!SvREADONLY (data))
1611	{	976	{
1612	SvREADONLY_on (data);	977	SvREADONLY_on (data);
…		…
1617	}	982	}
1618	}	983	}
1619		984
1620	void	985	void
1621	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	986	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1622	PROTOTYPE: $$;$
1623	PPCODE:	987	PPCODE:
1624	{	988	{
1625	SV *data;	989	SV *data;
1626	dREQ;	990	dREQ;
1627		991
1628	data = newSV (NAME_MAX);
1629	SvPOK_on (data);
1630
1631	req->type = REQ_READLINK;	992	req->type = EIO_READLINK;
1632	req->sv1 = newSVsv (path);	993	req->sv1 = newSVsv (path);
1633	req->ptr2 = SvPVbyte_nolen (req->sv1);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1634	req->sv2 = data;
1635	req->ptr1 = SvPVbyte_nolen (data);
1636		995
1637	REQ_SEND;	996	REQ_SEND;
1638	}	997	}
1639		998
1640	void	999	void
1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1000	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1642	PROTOTYPE: $$$$;$
1643	PPCODE:	1001	PPCODE:
1644	{	1002	{
		1003	int ifd = s_fileno_croak (in_fh , 0);
		1004	int ofd = s_fileno_croak (out_fh, 1);
1645	dREQ;	1005	dREQ;
1646		1006
1647	req->type = REQ_SENDFILE;	1007	req->type = EIO_SENDFILE;
1648	req->sv1 = newSVsv (out_fh);	1008	req->sv1 = newSVsv (out_fh);
1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1009	req->int1 = ofd;
1650	req->sv2 = newSVsv (in_fh);	1010	req->sv2 = newSVsv (in_fh);
1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1011	req->int2 = ifd;
1652	req->offs = SvVAL64 (in_offset);	1012	req->offs = in_offset;
1653	req->size = length;	1013	req->size = length;
1654		1014
1655	REQ_SEND;	1015	REQ_SEND;
1656	}	1016	}
1657		1017
1658	void	1018	void
1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1019	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$;$
1661	PPCODE:	1020	PPCODE:
1662	{	1021	{
		1022	int fd = s_fileno_croak (fh, 0);
1663	dREQ;	1023	dREQ;
1664		1024
1665	req->type = REQ_READAHEAD;	1025	req->type = EIO_READAHEAD;
1666	req->sv1 = newSVsv (fh);	1026	req->sv1 = newSVsv (fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1027	req->int1 = fd;
1668	req->offs = SvVAL64 (offset);	1028	req->offs = offset;
1669	req->size = length;	1029	req->size = length;
1670		1030
1671	REQ_SEND;	1031	REQ_SEND;
1672	}	1032	}
1673		1033
1674	void	1034	void
1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1035	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1676	ALIAS:	1036	ALIAS:
1677	aio_stat = REQ_STAT	1037	aio_stat = EIO_STAT
1678	aio_lstat = REQ_LSTAT	1038	aio_lstat = EIO_LSTAT
		1039	aio_statvfs = EIO_STATVFS
1679	PPCODE:	1040	PPCODE:
1680	{	1041	{
1681	dREQ;	1042	dREQ;
1682		1043
1683	req->ptr2 = malloc (sizeof (Stat_t));
1684	if (!req->ptr2)
1685	{
1686	req_destroy (req);
1687	croak ("out of memory during aio_stat statdata allocation");
1688	}
1689
1690	req->flags |= FLAG_PTR2_FREE;
1691	req->sv1 = newSVsv (fh_or_path);	1044	req->sv1 = newSVsv (fh_or_path);
1692		1045
1693	if (SvPOK (fh_or_path))	1046	if (SvPOK (req->sv1))
1694	{	1047	{
1695	req->type = ix;	1048	req->type = ix;
1696	req->ptr1 = SvPVbyte_nolen (req->sv1);	1049	req->ptr1 = SvPVbyte_nolen (req->sv1);
1697	}	1050	}
1698	else	1051	else
1699	{	1052	{
1700	req->type = REQ_FSTAT;	1053	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1054	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1702	}	1055	}
1703		1056
1704	REQ_SEND;	1057	REQ_SEND;
1705	}	1058	}
…		…
1712		1065
1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1066	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1067	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1715	req->sv1 = newSVsv (fh_or_path);	1068	req->sv1 = newSVsv (fh_or_path);
1716		1069
1717	if (SvPOK (fh_or_path))	1070	if (SvPOK (req->sv1))
1718	{	1071	{
1719	req->type = REQ_UTIME;	1072	req->type = EIO_UTIME;
1720	req->ptr1 = SvPVbyte_nolen (req->sv1);	1073	req->ptr1 = SvPVbyte_nolen (req->sv1);
1721	}	1074	}
1722	else	1075	else
1723	{	1076	{
1724	req->type = REQ_FUTIME;	1077	req->type = EIO_FUTIME;
1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1078	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1726	}	1079	}
1727		1080
1728	REQ_SEND;	1081	REQ_SEND;
1729	}	1082	}
…		…
1735	dREQ;	1088	dREQ;
1736		1089
1737	req->sv1 = newSVsv (fh_or_path);	1090	req->sv1 = newSVsv (fh_or_path);
1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1091	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1739		1092
1740	if (SvPOK (fh_or_path))	1093	if (SvPOK (req->sv1))
1741	{	1094	{
1742	req->type = REQ_TRUNCATE;	1095	req->type = EIO_TRUNCATE;
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);	1096	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	}	1097	}
1745	else	1098	else
1746	{	1099	{
1747	req->type = REQ_FTRUNCATE;	1100	req->type = EIO_FTRUNCATE;
1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1101	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1749	}	1102	}
1750		1103
1751	REQ_SEND;	1104	REQ_SEND;
1752	}	1105	}
1753		1106
1754	void	1107	void
1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1108	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1109	ALIAS:
		1110	aio_chmod = EIO_CHMOD
		1111	aio_mkdir = EIO_MKDIR
1756	PPCODE:	1112	PPCODE:
1757	{	1113	{
1758	dREQ;	1114	dREQ;
1759		1115
1760	req->mode = mode;	1116	req->int2 = mode;
1761	req->sv1 = newSVsv (fh_or_path);	1117	req->sv1 = newSVsv (fh_or_path);
1762		1118
1763	if (SvPOK (fh_or_path))	1119	if (SvPOK (req->sv1))
1764	{	1120	{
1765	req->type = REQ_CHMOD;	1121	req->type = ix;
1766	req->ptr1 = SvPVbyte_nolen (req->sv1);	1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
1767	}	1123	}
1768	else	1124	else
1769	{	1125	{
1770	req->type = REQ_FCHMOD;	1126	req->type = EIO_FCHMOD;
1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1127	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1772	}	1128	}
1773		1129
1774	REQ_SEND;	1130	REQ_SEND;
1775	}	1131	}
…		…
1782		1138
1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1139	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1140	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1785	req->sv1 = newSVsv (fh_or_path);	1141	req->sv1 = newSVsv (fh_or_path);
1786		1142
1787	if (SvPOK (fh_or_path))	1143	if (SvPOK (req->sv1))
1788	{	1144	{
1789	req->type = REQ_CHOWN;	1145	req->type = EIO_CHOWN;
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);	1146	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791	}	1147	}
1792	else	1148	else
1793	{	1149	{
1794	req->type = REQ_FCHOWN;	1150	req->type = EIO_FCHOWN;
1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1151	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1796	}	1152	}
1797		1153
1798	REQ_SEND;	1154	REQ_SEND;
1799	}	1155	}
1800		1156
1801	void	1157	void
		1158	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1159	PPCODE:
		1160	{
		1161	dREQ;
		1162
		1163	req->type = EIO_READDIR;
		1164	req->sv1 = newSVsv (pathname);
		1165	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1166	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1167
		1168	if (flags & EIO_READDIR_DENTS)
		1169	req->int1 |= EIO_READDIR_CUSTOM2;
		1170
		1171	REQ_SEND;
		1172	}
		1173
		1174	void
1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1175	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1803	ALIAS:	1176	ALIAS:
1804	aio_unlink = REQ_UNLINK	1177	aio_unlink = EIO_UNLINK
1805	aio_rmdir = REQ_RMDIR	1178	aio_rmdir = EIO_RMDIR
1806	aio_readdir = REQ_READDIR	1179	aio_readdir = EIO_READDIR
1807	PPCODE:	1180	PPCODE:
1808	{	1181	{
1809	dREQ;	1182	dREQ;
1810		1183
1811	req->type = ix;	1184	req->type = ix;
…		…
1814		1187
1815	REQ_SEND;	1188	REQ_SEND;
1816	}	1189	}
1817		1190
1818	void	1191	void
1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1820	PPCODE:
1821	{
1822	dREQ;
1823
1824	req->type = REQ_MKDIR;
1825	req->sv1 = newSVsv (pathname);
1826	req->ptr1 = SvPVbyte_nolen (req->sv1);
1827	req->mode = mode;
1828
1829	REQ_SEND;
1830	}
1831
1832	void
1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1192	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1834	ALIAS:	1193	ALIAS:
1835	aio_link = REQ_LINK	1194	aio_link = EIO_LINK
1836	aio_symlink = REQ_SYMLINK	1195	aio_symlink = EIO_SYMLINK
1837	aio_rename = REQ_RENAME	1196	aio_rename = EIO_RENAME
1838	PPCODE:	1197	PPCODE:
1839	{	1198	{
1840	dREQ;	1199	dREQ;
1841		1200
1842	req->type = ix;	1201	req->type = ix;
1843	req->sv2 = newSVsv (oldpath);	1202	req->sv1 = newSVsv (oldpath);
		1203	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1204	req->sv2 = newSVsv (newpath);
1844	req->ptr2 = SvPVbyte_nolen (req->sv2);	1205	req->ptr2 = SvPVbyte_nolen (req->sv2);
1845	req->sv1 = newSVsv (newpath);
1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1847		1206
1848	REQ_SEND;	1207	REQ_SEND;
1849	}	1208	}
1850		1209
1851	void	1210	void
1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1211	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1853	PPCODE:	1212	PPCODE:
1854	{	1213	{
1855	dREQ;	1214	dREQ;
1856		1215
1857	req->type = REQ_MKNOD;	1216	req->type = EIO_MKNOD;
1858	req->sv1 = newSVsv (pathname);	1217	req->sv1 = newSVsv (pathname);
1859	req->ptr1 = SvPVbyte_nolen (req->sv1);	1218	req->ptr1 = SvPVbyte_nolen (req->sv1);
1860	req->mode = (mode_t)mode;	1219	req->int2 = (mode_t)mode;
1861	req->offs = dev;	1220	req->offs = dev;
1862		1221
1863	REQ_SEND;	1222	REQ_SEND;
1864	}	1223	}
1865		1224
1866	void	1225	void
		1226	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1227	ALIAS:
		1228	aio_mtouch = EIO_MTOUCH
		1229	aio_msync = EIO_MSYNC
		1230	PPCODE:
		1231	{
		1232	STRLEN svlen;
		1233	char *svptr = SvPVbyte (data, svlen);
		1234	UV len = SvUV (length);
		1235
		1236	if (offset < 0)
		1237	offset += svlen;
		1238
		1239	if (offset < 0 || offset > svlen)
		1240	croak ("offset outside of scalar");
		1241
		1242	if (!SvOK (length) || len + offset > svlen)
		1243	len = svlen - offset;
		1244
		1245	{
		1246	dREQ;
		1247
		1248	req->type = ix;
		1249	req->sv2 = SvREFCNT_inc (data);
		1250	req->ptr2 = (char *)svptr + offset;
		1251	req->size = len;
		1252	req->int1 = flags;
		1253
		1254	REQ_SEND;
		1255	}
		1256	}
		1257
		1258	void
		1259	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1260	PPCODE:
		1261	{
		1262	STRLEN svlen;
		1263	char *svptr = SvPVbyte (data, svlen);
		1264	UV len = SvUV (length);
		1265
		1266	if (offset < 0)
		1267	offset += svlen;
		1268
		1269	if (offset < 0 || offset > svlen)
		1270	croak ("offset outside of scalar");
		1271
		1272	if (!SvOK (length) || len + offset > svlen)
		1273	len = svlen - offset;
		1274
		1275	{
		1276	dREQ;
		1277
		1278	req->type = EIO_MLOCK;
		1279	req->sv2 = SvREFCNT_inc (data);
		1280	req->ptr2 = (char *)svptr + offset;
		1281	req->size = len;
		1282
		1283	REQ_SEND;
		1284	}
		1285	}
		1286
		1287	void
		1288	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1289	PPCODE:
		1290	{
		1291	dREQ;
		1292
		1293	req->type = EIO_MLOCKALL;
		1294	req->int1 = flags;
		1295
		1296	REQ_SEND;
		1297	}
		1298
		1299	void
1867	aio_busy (double delay, SV *callback=&PL_sv_undef)	1300	aio_busy (double delay, SV *callback=&PL_sv_undef)
1868	PPCODE:	1301	PPCODE:
1869	{	1302	{
1870	dREQ;	1303	dREQ;
1871		1304
1872	req->type = REQ_BUSY;	1305	req->type = EIO_BUSY;
1873	req->nv1 = delay < 0. ? 0. : delay;	1306	req->nv1 = delay < 0. ? 0. : delay;
1874		1307
1875	REQ_SEND;	1308	REQ_SEND;
1876	}	1309	}
1877		1310
1878	void	1311	void
1879	aio_group (SV *callback=&PL_sv_undef)	1312	aio_group (SV *callback=&PL_sv_undef)
1880	PROTOTYPE: ;$
1881	PPCODE:	1313	PPCODE:
1882	{	1314	{
1883	dREQ;	1315	dREQ;
1884		1316
1885	req->type = REQ_GROUP;	1317	req->type = EIO_GROUP;
1886		1318
1887	req_send (req);	1319	req_submit (req);
1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1320	XPUSHs (req_sv (req, aio_grp_stash));
1889	}	1321	}
1890		1322
1891	void	1323	void
1892	aio_nop (SV *callback=&PL_sv_undef)	1324	aio_nop (SV *callback=&PL_sv_undef)
		1325	ALIAS:
		1326	aio_nop = EIO_NOP
		1327	aio_sync = EIO_SYNC
1893	PPCODE:	1328	PPCODE:
1894	{	1329	{
1895	dREQ;	1330	dREQ;
1896		1331
1897	req->type = REQ_NOP;	1332	req->type = ix;
1898		1333
1899	REQ_SEND;	1334	REQ_SEND;
1900	}	1335	}
1901		1336
1902	int	1337	int
1903	aioreq_pri (int pri = 0)	1338	aioreq_pri (int pri = 0)
1904	PROTOTYPE: ;$
1905	CODE:	1339	CODE:
1906	RETVAL = next_pri - PRI_BIAS;	1340	RETVAL = next_pri;
1907	if (items > 0)	1341	if (items > 0)
1908	{	1342	{
1909	if (pri < PRI_MIN) pri = PRI_MIN;	1343	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1910	if (pri > PRI_MAX) pri = PRI_MAX;	1344	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1911	next_pri = pri + PRI_BIAS;	1345	next_pri = pri;
1912	}	1346	}
1913	OUTPUT:	1347	OUTPUT:
1914	RETVAL	1348	RETVAL
1915		1349
1916	void	1350	void
1917	aioreq_nice (int nice = 0)	1351	aioreq_nice (int nice = 0)
1918	CODE:	1352	CODE:
1919	nice = next_pri - nice;	1353	nice = next_pri - nice;
1920	if (nice < PRI_MIN) nice = PRI_MIN;	1354	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1921	if (nice > PRI_MAX) nice = PRI_MAX;	1355	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1922	next_pri = nice + PRI_BIAS;	1356	next_pri = nice;
1923		1357
1924	void	1358	void
1925	flush ()	1359	flush ()
1926	PROTOTYPE:
1927	CODE:	1360	CODE:
1928	while (nreqs)	1361	while (eio_nreqs ())
1929	{	1362	{
1930	poll_wait ();	1363	poll_wait ();
1931	poll_cb ();	1364	poll_cb ();
1932	}	1365	}
1933		1366
1934	int	1367	int
1935	poll()	1368	poll ()
1936	PROTOTYPE:
1937	CODE:	1369	CODE:
1938	poll_wait ();	1370	poll_wait ();
1939	RETVAL = poll_cb ();	1371	RETVAL = poll_cb ();
1940	OUTPUT:	1372	OUTPUT:
1941	RETVAL	1373	RETVAL
1942		1374
1943	int	1375	int
1944	poll_fileno()	1376	poll_fileno ()
1945	PROTOTYPE:
1946	CODE:	1377	CODE:
1947	RETVAL = respipe [0];	1378	RETVAL = s_epipe_fd (&respipe);
1948	OUTPUT:	1379	OUTPUT:
1949	RETVAL	1380	RETVAL
1950		1381
1951	int	1382	int
1952	poll_cb(...)	1383	poll_cb (...)
1953	PROTOTYPE:	1384	PROTOTYPE:
1954	CODE:	1385	CODE:
1955	RETVAL = poll_cb ();	1386	RETVAL = poll_cb ();
1956	OUTPUT:	1387	OUTPUT:
1957	RETVAL	1388	RETVAL
1958		1389
1959	void	1390	void
1960	poll_wait()	1391	poll_wait ()
1961	PROTOTYPE:
1962	CODE:	1392	CODE:
1963	poll_wait ();	1393	poll_wait ();
1964		1394
1965	void
1966	setsig (int signum = SIGIO)
1967	PROTOTYPE: ;$
1968	CODE:
1969	{
1970	if (block_sig_level)
1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1972
1973	X_LOCK (reslock);
1974	main_tid = pthread_self ();
1975	main_sig = signum;
1976	X_UNLOCK (reslock);
1977
1978	if (main_sig && npending)
1979	pthread_kill (main_tid, main_sig);
1980	}
1981
1982	void
1983	aio_block (SV *cb)
1984	PROTOTYPE: &
1985	PPCODE:
1986	{
1987	int count;
1988
1989	block_sig ();
1990	PUSHMARK (SP);
1991	PUTBACK;
1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1993	SPAGAIN;
1994	unblock_sig ();
1995
1996	if (SvTRUE (ERRSV))
1997	croak (0);
1998
1999	XSRETURN (count);
2000	}
2001
2002	int	1395	int
2003	nreqs()	1396	nreqs ()
2004	PROTOTYPE:
2005	CODE:	1397	CODE:
2006	RETVAL = nreqs;	1398	RETVAL = eio_nreqs ();
2007	OUTPUT:	1399	OUTPUT:
2008	RETVAL	1400	RETVAL
2009		1401
2010	int	1402	int
2011	nready()	1403	nready ()
2012	PROTOTYPE:
2013	CODE:	1404	CODE:
2014	RETVAL = get_nready ();	1405	RETVAL = eio_nready ();
2015	OUTPUT:	1406	OUTPUT:
2016	RETVAL	1407	RETVAL
2017		1408
2018	int	1409	int
2019	npending()	1410	npending ()
2020	PROTOTYPE:
2021	CODE:	1411	CODE:
2022	RETVAL = get_npending ();	1412	RETVAL = eio_npending ();
2023	OUTPUT:	1413	OUTPUT:
2024	RETVAL	1414	RETVAL
2025		1415
2026	int	1416	int
2027	nthreads()	1417	nthreads ()
2028	PROTOTYPE:
2029	CODE:	1418	CODE:
2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1419	RETVAL = eio_nthreads ();
2031	RETVAL = started;
2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2033	OUTPUT:	1420	OUTPUT:
2034	RETVAL	1421	RETVAL
2035		1422
		1423	int
		1424	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1425	CODE:
		1426	RETVAL = posix_fadvise (fh, offset, length, advice);
		1427	OUTPUT:
		1428	RETVAL
		1429
		1430	ssize_t
		1431	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1432	CODE:
		1433	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1434	OUTPUT:
		1435	RETVAL
		1436
		1437	void
		1438	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1439	PPCODE:
		1440	sv_unmagic (scalar, MMAP_MAGIC);
		1441	{
		1442	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1443	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1444	if (addr == (void *)-1)
		1445	XSRETURN_NO;
		1446
		1447	sv_force_normal (scalar);
		1448
		1449	/* we store the length in mg_obj, as namlen is I32 :/ */
		1450	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1451	->mg_obj = (SV *)length;
		1452
		1453	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1454
		1455	if (!(prot & PROT_WRITE))
		1456	SvREADONLY_on (scalar);
		1457
		1458	if (SvLEN (scalar))
		1459	Safefree (SvPVX (scalar));
		1460
		1461	SvPVX (scalar) = (char *)addr;
		1462	SvCUR_set (scalar, length);
		1463	SvLEN_set (scalar, 0);
		1464	SvPOK_only (scalar);
		1465
		1466	XSRETURN_YES;
		1467	}
		1468
		1469	void
		1470	munmap (SV *scalar)
		1471	CODE:
		1472	sv_unmagic (scalar, MMAP_MAGIC);
		1473
		1474	int
		1475	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1476	ALIAS:
		1477	mprotect = 1
		1478	CODE:
		1479	{
		1480	STRLEN svlen;
		1481	void *addr = SvPVbyte (scalar, svlen);
		1482	size_t len = SvUV (length);
		1483
		1484	if (offset < 0)
		1485	offset += svlen;
		1486
		1487	if (offset < 0 || offset > svlen)
		1488	croak ("offset outside of scalar");
		1489
		1490	if (!SvOK (length) || len + offset > svlen)
		1491	len = svlen - offset;
		1492
		1493	addr = (void *)(((intptr_t)addr) + offset);
		1494	eio_page_align (&addr, &len);
		1495
		1496	switch (ix)
		1497	{
		1498	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1499	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1500	}
		1501	}
		1502	OUTPUT:
		1503	RETVAL
		1504
		1505	int
		1506	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1507	CODE:
		1508	{
		1509	STRLEN svlen;
		1510	void *addr = SvPVbyte (scalar, svlen);
		1511	size_t len = SvUV (length);
		1512
		1513	if (offset < 0)
		1514	offset += svlen;
		1515
		1516	if (offset < 0 || offset > svlen)
		1517	croak ("offset outside of scalar");
		1518
		1519	if (!SvOK (length) || len + offset > svlen)
		1520	len = svlen - offset;
		1521
		1522	addr = (void *)(((intptr_t)addr) + offset);
		1523	eio_page_align (&addr, &len);
		1524	#if _POSIX_MEMLOCK
		1525	RETVAL = munlock (addr, len);
		1526	#else
		1527	RETVAL = ((errno = ENOSYS), -1);
		1528	#endif
		1529	}
		1530	OUTPUT:
		1531	RETVAL
		1532
		1533	int
		1534	munlockall ()
		1535	CODE:
		1536	#if _POSIX_MEMLOCK
		1537	munlockall ();
		1538	#else
		1539	RETVAL = -1;
		1540	errno = ENOSYS;
		1541	#endif
		1542	OUTPUT:
		1543	RETVAL
		1544
		1545	void _on_next_submit (SV *cb)
		1546	CODE:
		1547	SvREFCNT_dec (on_next_submit);
		1548	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1549
2036	PROTOTYPES: DISABLE	1550	PROTOTYPES: DISABLE
2037		1551
2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1552	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2039		1553
2040	void	1554	void
2041	cancel (aio_req_ornot req)	1555	cancel (aio_req_ornot req)
2042	CODE:	1556	CODE:
2043	req_cancel (req);	1557	eio_cancel (req);
2044		1558
2045	void	1559	void
2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1560	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2047	CODE:	1561	PPCODE:
		1562	{
		1563	if (GIMME_V != G_VOID)
		1564	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1565
		1566	if (items > 1)
		1567	{
		1568	SV *cb_cv =get_cb (callback);
		1569
2048	SvREFCNT_dec (req->callback);	1570	SvREFCNT_dec (req->callback);
2049	req->callback = newSVsv (callback);	1571	req->callback = SvREFCNT_inc (cb_cv);
		1572	}
		1573	}
2050		1574
2051	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1575	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2052		1576
2053	void	1577	void
2054	add (aio_req grp, ...)	1578	add (aio_req grp, ...)
2055	PPCODE:	1579	PPCODE:
2056	{	1580	{
2057	int i;	1581	int i;
2058	aio_req req;
2059
2060	if (main_sig && !block_sig_level)
2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2062		1582
2063	if (grp->int1 == 2)	1583	if (grp->int1 == 2)
2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1584	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2065		1585
2066	for (i = 1; i < items; ++i )	1586	for (i = 1; i < items; ++i )
2067	{	1587	{
		1588	aio_req req;
		1589
2068	if (GIMME_V != G_VOID)	1590	if (GIMME_V != G_VOID)
2069	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1591	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2070		1592
2071	req = SvAIO_REQ (ST (i));	1593	req = SvAIO_REQ (ST (i));
2072		1594
2073	if (req)	1595	if (req)
2074	{	1596	eio_grp_add (grp, req);
2075	++grp->size;
2076	req->grp = grp;
2077
2078	req->grp_prev = 0;
2079	req->grp_next = grp->grp_first;
2080
2081	if (grp->grp_first)
2082	grp->grp_first->grp_prev = req;
2083
2084	grp->grp_first = req;
2085	}
2086	}	1597	}
2087	}	1598	}
2088		1599
2089	void	1600	void
2090	cancel_subs (aio_req_ornot req)	1601	cancel_subs (aio_req_ornot req)
…		…
2099	AV *av;	1610	AV *av;
2100		1611
2101	grp->errorno = errno;	1612	grp->errorno = errno;
2102		1613
2103	av = newAV ();	1614	av = newAV ();
		1615	av_extend (av, items - 1);
2104		1616
2105	for (i = 1; i < items; ++i )	1617	for (i = 1; i < items; ++i )
2106	av_push (av, newSVsv (ST (i)));	1618	av_push (av, newSVsv (ST (i)));
2107		1619
2108	SvREFCNT_dec (grp->sv1);	1620	SvREFCNT_dec (grp->sv1);
…		…
2115	grp->errorno = errorno;	1627	grp->errorno = errorno;
2116		1628
2117	void	1629	void
2118	limit (aio_req grp, int limit)	1630	limit (aio_req grp, int limit)
2119	CODE:	1631	CODE:
2120	grp->int2 = limit;	1632	eio_grp_limit (grp, limit);
2121	aio_grp_feed (grp);
2122		1633
2123	void	1634	void
2124	feed (aio_req grp, SV *callback=&PL_sv_undef)	1635	feed (aio_req grp, SV *callback=&PL_sv_undef)
2125	CODE:	1636	CODE:
2126	{	1637	{
2127	SvREFCNT_dec (grp->sv2);	1638	SvREFCNT_dec (grp->sv2);
2128	grp->sv2 = newSVsv (callback);	1639	grp->sv2 = newSVsv (callback);
		1640	grp->feed = aio_grp_feed;
2129		1641
2130	if (grp->int2 <= 0)	1642	if (grp->int2 <= 0)
2131	grp->int2 = 2;	1643	grp->int2 = 2;
2132		1644
2133	aio_grp_feed (grp);	1645	eio_grp_limit (grp, grp->int2);
2134	}	1646	}
2135		1647

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