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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC vs.
Revision 1.184 by root, Tue Jul 5 20:34:42 2011 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_MEMLOCK_RANGE || _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
		38	# undef send
		39	# undef recv
29	# undef stat	40	# undef stat
30	# undef fstat	41	# undef fstat
31	# define lstat stat	42	# define lstat stat
32	# undef truncate	43	# undef truncate
33	# undef ftruncate	44	# undef ftruncate
…		…
52	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
53	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
54		65
55	#else	66	#else
56		67
57	# include "autoconf/config.h"
58	# include <sys/time.h>	68	# include <sys/time.h>
59	# include <sys/select.h>	69	# include <sys/select.h>
60	# include <unistd.h>	70	# include <unistd.h>
61	# include <utime.h>	71	# include <utime.h>
62	# include <signal.h>	72	# include <signal.h>
63	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
64		74
65	#endif
66
67	#if HAVE_SENDFILE
68	# if __linux
69	# include <sys/sendfile.h>
70	# elif __freebsd
71	# include <sys/socket.h>
72	# include <sys/uio.h>
73	# elif __hpux
74	# include <sys/socket.h>
75	# elif __solaris /* not yet */
76	# include <sys/sendfile.h>
77	# else
78	# error sendfile support requested but not available
79	# endif	75	#endif
80	#endif
81		76
82	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
83	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
84		82
85	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
86	#ifndef NAME_MAX
87	# define NAME_MAX 4096
88	#endif
89
90	/* buffer size for various temporary buffers */
91	#define AIO_BUFSIZE 65536
92		84
93	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
94	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
95	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
96	#else	90	#else
		91	# define VAL64 NV
97	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
98	#endif	94	#endif
99		95
100	#define dBUF \	96	/*****************************************************************************/
101	char *aio_buf; \	97
102	X_LOCK (wrklock); \	98	#if __GNUC__ >= 3
103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
104	X_UNLOCK (wrklock); \	100	#else
105	if (!aio_buf) \	101	# define expect(expr,value) (expr)
106	return -1;	102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
107		108
108	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/config.h"
		124	#include "libeio/eio.h"
		125
		126	/* Linux/others */
		127	#ifndef O_ASYNC
		128	# define O_ASYNC 0
		129	#endif
		130	#ifndef O_DIRECT
		131	# define O_DIRECT 0
		132	#endif
		133	#ifndef O_NOATIME
		134	# define O_NOATIME 0
		135	#endif
		136
		137	/* POSIX */
		138	#ifndef O_CLOEXEC
		139	# define O_CLOEXEC 0
		140	#endif
		141	#ifndef O_NOFOLLOW
		142	# define O_NOFOLLOW 0
		143	#endif
		144	#ifndef O_NOCTTY
		145	# define O_NOCTTY 0
		146	#endif
		147	#ifndef O_NONBLOCK
		148	# define O_NONBLOCK 0
		149	#endif
		150	#ifndef O_EXEC
		151	# define O_EXEC 0
		152	#endif
		153	#ifndef O_SEARCH
		154	# define O_SEARCH 0
		155	#endif
		156	#ifndef O_DIRECTORY
		157	# define O_DIRECTORY 0
		158	#endif
		159	#ifndef O_DSYNC
		160	# define O_DSYNC 0
		161	#endif
		162	#ifndef O_RSYNC
		163	# define O_RSYNC 0
		164	#endif
		165	#ifndef O_SYNC
		166	# define O_SYNC 0
		167	#endif
		168	#ifndef O_TTY_INIT
		169	# define O_TTY_INIT 0
		170	#endif
		171
		172	#ifndef POSIX_FADV_NORMAL
		173	# define POSIX_FADV_NORMAL 0
		174	#endif
		175	#ifndef POSIX_FADV_SEQUENTIAL
		176	# define POSIX_FADV_SEQUENTIAL 0
		177	#endif
		178	#ifndef POSIX_FADV_RANDOM
		179	# define POSIX_FADV_RANDOM 0
		180	#endif
		181	#ifndef POSIX_FADV_NOREUSE
		182	# define POSIX_FADV_NOREUSE 0
		183	#endif
		184	#ifndef POSIX_FADV_WILLNEED
		185	# define POSIX_FADV_WILLNEED 0
		186	#endif
		187	#ifndef POSIX_FADV_DONTNEED
		188	# define POSIX_FADV_DONTNEED 0
		189	#endif
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#ifndef POSIX_MADV_NORMAL
		196	# define POSIX_MADV_NORMAL 0
		197	#endif
		198	#ifndef POSIX_MADV_SEQUENTIAL
		199	# define POSIX_MADV_SEQUENTIAL 0
		200	#endif
		201	#ifndef POSIX_MADV_RANDOM
		202	# define POSIX_MADV_RANDOM 0
		203	#endif
		204	#ifndef POSIX_MADV_WILLNEED
		205	# define POSIX_MADV_WILLNEED 0
		206	#endif
		207	#ifndef POSIX_MADV_DONTNEED
		208	# define POSIX_MADV_DONTNEED 0
		209	#endif
		210
		211	#if !HAVE_POSIX_MADVISE
		212	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		213	#endif
		214
		215	#ifndef PROT_NONE
		216	# define PROT_NONE 0
		217	#endif
		218	#ifndef PROT_READ
		219	# define PROT_READ 0
		220	#endif
		221	#ifndef PROT_WRITE
		222	# define PROT_READ 0
		223	#endif
		224	#ifndef PROT_EXEC
		225	# define PROT_EXEC 0
		226	#endif
		227
		228	#ifndef ST_NODEV
		229	# define ST_NODEV 0
		230	#endif
		231	#ifndef ST_NOEXEC
		232	# define ST_NOEXEC 0
		233	#endif
		234	#ifndef ST_SYNCHRONOUS
		235	# define ST_SYNCHRONOUS 0
		236	#endif
		237	#ifndef ST_MANDLOCK
		238	# define ST_MANDLOCK 0
		239	#endif
		240	#ifndef ST_WRITE
		241	# define ST_WRITE 0
		242	#endif
		243	#ifndef ST_APPEND
		244	# define ST_APPEND 0
		245	#endif
		246	#ifndef ST_IMMUTABLE
		247	# define ST_IMMUTABLE 0
		248	#endif
		249	#ifndef ST_NOATIME
		250	# define ST_NOATIME 0
		251	#endif
		252	#ifndef ST_NODIRATIME
		253	# define ST_NODIRATIME 0
		254	#endif
		255	#ifndef ST_RELATIME
		256	# define ST_RELATIME 0
		257	#endif
		258
		259	#ifndef S_IFIFO
		260	# define S_IFIFO 0
		261	#endif
		262	#ifndef S_IFCHR
		263	# define S_IFCHR 0
		264	#endif
		265	#ifndef S_IFBLK
		266	# define S_IFBLK 0
		267	#endif
		268	#ifndef S_IFLNK
		269	# define S_IFLNK 0
		270	#endif
		271	#ifndef S_IFREG
		272	# define S_IFREG 0
		273	#endif
		274	#ifndef S_IFDIR
		275	# define S_IFDIR 0
		276	#endif
		277	#ifndef S_IFWHT
		278	# define S_IFWHT 0
		279	#endif
		280	#ifndef S_IFSOCK
		281	# define S_IFSOCK 0
		282	#endif
		283
		284	#ifndef MAP_ANONYMOUS
		285	# ifdef MAP_ANON
		286	# define MAP_ANONYMOUS MAP_ANON
		287	# else
		288	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		289	# endif
		290	#endif
		291	#ifndef MAP_HUGETLB
		292	# define MAP_HUGETLB 0
		293	#endif
		294	#ifndef MAP_LOCKED
		295	# define MAP_LOCKED 0
		296	#endif
		297	#ifndef MAP_NORESERVE
		298	# define MAP_NORESERVE 0
		299	#endif
		300	#ifndef MAP_POPULATE
		301	# define MAP_POPULATE 0
		302	#endif
		303	#ifndef MAP_NONBLOCK
		304	# define MAP_NONBLOCK 0
		305	#endif
		306
		307	#ifndef makedev
		308	# define makedev(maj,min) (((maj) << 8) | (min))
		309	#endif
		310	#ifndef major
		311	# define major(dev) ((dev) >> 8)
		312	#endif
		313	#ifndef minor
		314	# define minor(dev) ((dev) & 0xff)
		315	#endif
		316
		317	#ifndef PAGESIZE
		318	# define PAGESIZE sysconf (_SC_PAGESIZE)
		319	#endif
		320
		321	static int req_invoke (eio_req *req);
		322	#define EIO_FINISH(req) req_invoke (req)
		323	static void req_destroy (eio_req *grp);
		324	#define EIO_DESTROY(req) req_destroy (req)
109		325
110	enum {	326	enum {
111	REQ_QUIT,	327	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
112	REQ_OPEN, REQ_CLOSE,
113	REQ_READ, REQ_WRITE,
114	REQ_READAHEAD, REQ_SENDFILE,
115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
116	REQ_TRUNCATE, REQ_FTRUNCATE,
117	REQ_UTIME, REQ_FUTIME,
118	REQ_CHMOD, REQ_FCHMOD,
119	REQ_CHOWN, REQ_FCHOWN,
120	REQ_FSYNC, REQ_FDATASYNC,
121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
122	REQ_MKNOD, REQ_READDIR,
123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
124	REQ_GROUP, REQ_NOP,
125	REQ_BUSY,
126	};	328	};
127		329
128	#define AIO_REQ_KLASS "IO::AIO::REQ"	330	#include "libeio/eio.c"
129	#define AIO_GRP_KLASS "IO::AIO::GRP"
130		331
131	typedef struct aio_cb
132	{
133	struct aio_cb *volatile next;
134
135	SV *callback;
136	SV *sv1, *sv2;
137	void *ptr1, *ptr2;
138	off_t offs;
139	size_t size;
140	ssize_t result;
141	double nv1, nv2;
142
143	STRLEN stroffset;
144	int type;
145	int int1, int2, int3;
146	int errorno;
147	mode_t mode; /* open */
148
149	unsigned char flags;
150	unsigned char pri;
151
152	SV *self; /* the perl counterpart of this request, if any */
153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
154	} aio_cb;
155
156	enum {
157	FLAG_CANCELLED = 0x01, /* request was cancelled */
158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
160	};
161
162	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
163	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
164		334
165	enum {	335	static SV *on_next_submit;
166	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
167	PRI_MAX = 4,	337	static int max_outstanding;
168		338
169	DEFAULT_PRI = 0,	339	static s_epipe respipe;
170	PRI_BIAS = -PRI_MIN,
171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
172	};
173		340
174	#define AIO_TICKS ((1000000 + 1023) >> 10)
175
176	static unsigned int max_poll_time = 0;
177	static unsigned int max_poll_reqs = 0;
178
179	/* calculcate time difference in ~1/AIO_TICKS of a second */
180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
181	{
182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
184	}
185
186	static thread_t main_tid;
187	static int main_sig;
188	static int block_sig_level;
189
190	void block_sig ()
191	{
192	sigset_t ss;
193
194	if (block_sig_level++)
195	return;
196
197	if (!main_sig)
198	return;
199
200	sigemptyset (&ss);
201	sigaddset (&ss, main_sig);
202	pthread_sigmask (SIG_BLOCK, &ss, 0);
203	}
204
205	void unblock_sig ()
206	{
207	sigset_t ss;
208
209	if (--block_sig_level)
210	return;
211
212	if (!main_sig)
213	return;
214
215	sigemptyset (&ss);
216	sigaddset (&ss, main_sig);
217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
218	}
219
220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
221
222	static unsigned int started, idle, wanted;
223
224	/* worker threads management */
225	static mutex_t wrklock = X_MUTEX_INIT;
226
227	typedef struct worker {
228	/* locked by wrklock */
229	struct worker *prev, *next;
230
231	thread_t tid;
232
233	/* locked by reslock, reqlock or wrklock */
234	aio_req req; /* currently processed request */
235	void *dbuf;
236	DIR *dirp;
237	} worker;
238
239	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
240
241	static void worker_clear (worker *wrk)
242	{
243	if (wrk->dirp)
244	{
245	closedir (wrk->dirp);
246	wrk->dirp = 0;
247	}
248
249	if (wrk->dbuf)
250	{
251	free (wrk->dbuf);
252	wrk->dbuf = 0;
253	}
254	}
255
256	static void worker_free (worker *wrk)
257	{
258	wrk->next->prev = wrk->prev;
259	wrk->prev->next = wrk->next;
260
261	free (wrk);
262	}
263
264	static volatile unsigned int nreqs, nready, npending;
265	static volatile unsigned int max_idle = 4;
266	static volatile unsigned int max_outstanding = 0xffffffff;
267	static int respipe [2];
268
269	static mutex_t reslock = X_MUTEX_INIT;
270	static mutex_t reqlock = X_MUTEX_INIT;
271	static cond_t reqwait = X_COND_INIT;
272
273	#if WORDACCESS_UNSAFE
274
275	static unsigned int get_nready ()
276	{
277	unsigned int retval;
278
279	X_LOCK (reqlock);
280	retval = nready;
281	X_UNLOCK (reqlock);
282
283	return retval;
284	}
285
286	static unsigned int get_npending ()
287	{
288	unsigned int retval;
289
290	X_LOCK (reslock);
291	retval = npending;
292	X_UNLOCK (reslock);
293
294	return retval;
295	}
296
297	static unsigned int get_nthreads ()
298	{
299	unsigned int retval;
300
301	X_LOCK (wrklock);
302	retval = started;
303	X_UNLOCK (wrklock);
304
305	return retval;
306	}
307
308	#else
309
310	# define get_nready() nready
311	# define get_npending() npending
312	# define get_nthreads() started
313
314	#endif
315
316	/*
317	* a somewhat faster data structure might be nice, but
318	* with 8 priorities this actually needs <20 insns
319	* per shift, the most expensive operation.
320	*/
321	typedef struct {
322	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
323	int size;
324	} reqq;
325
326	static reqq req_queue;
327	static reqq res_queue;
328
329	int reqq_push (reqq *q, aio_req req)
330	{
331	int pri = req->pri;
332	req->next = 0;
333
334	if (q->qe[pri])
335	{
336	q->qe[pri]->next = req;
337	q->qe[pri] = req;
338	}
339	else
340	q->qe[pri] = q->qs[pri] = req;
341
342	return q->size++;
343	}
344
345	aio_req reqq_shift (reqq *q)
346	{
347	int pri;
348
349	if (!q->size)
350	return 0;
351
352	--q->size;
353
354	for (pri = NUM_PRI; pri--; )
355	{
356	aio_req req = q->qs[pri];
357
358	if (req)
359	{
360	if (!(q->qs[pri] = req->next))
361	q->qe[pri] = 0;
362
363	return req;
364	}
365	}
366
367	abort ();
368	}
369
370	static int poll_cb ();
371	static int req_invoke (aio_req req);
372	static void req_destroy (aio_req req);	341	static void req_destroy (aio_req req);
373	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
374		343
		344	static void want_poll (void)
		345	{
		346	/* write a dummy byte to the pipe so fh becomes ready */
		347	s_epipe_signal (&respipe);
		348	}
		349
		350	static void done_poll (void)
		351	{
		352	/* read any signals sent by the worker threads */
		353	s_epipe_drain (&respipe);
		354	}
		355
375	/* must be called at most once */	356	/* must be called at most once */
376	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
377	{	358	{
378	if (!req->self)	359	if (!req->self)
379	{	360	{
380	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
381	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
382	}	363	}
383		364
384	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
385	}	366	}
386		367
387	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
388	{	369	{
389	MAGIC *mg;	370	MAGIC *mg;
390		371
391	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	372	if (!SvROK (sv)
		373	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		374	&& SvSTASH (SvRV (sv)) != aio_req_stash
		375	&& !sv_derived_from (sv, "IO::AIO::REQ")))
392	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
393		377
394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
395		379
396	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
397	}	381	}
398		382
399	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
400	{	384	{
401	block_sig ();	385	if (grp->sv2 && SvOK (grp->sv2))
402
403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
404	{	386	{
405	int old_len = grp->size;
406
407	if (grp->sv2 && SvOK (grp->sv2))
408	{
409	dSP;	387	dSP;
410		388
411	ENTER;	389	ENTER;
412	SAVETMPS;	390	SAVETMPS;
413	PUSHMARK (SP);	391	PUSHMARK (SP);
414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
415	PUTBACK;	393	PUTBACK;
416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
417	SPAGAIN;	395	SPAGAIN;
418	FREETMPS;	396	FREETMPS;
419	LEAVE;	397	LEAVE;
420	}
421
422	/* stop if no progress has been made */
423	if (old_len == grp->size)
424	{
425	SvREFCNT_dec (grp->sv2);
426	grp->sv2 = 0;
427	break;
428	}
429	}	398	}
430
431	unblock_sig ();
432	}	399	}
433		400
434	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
435	{	402	{
436	--grp->size;	403	eio_submit (req);
437		404
438	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
439	aio_grp_feed (grp);
440
441	/* finish, if done */
442	if (!grp->size && grp->int1)
443	{	406	{
444	block_sig ();	407	dSP;
		408	SV *cb = sv_2mortal (on_next_submit);
445		409
446	if (!req_invoke (grp))	410	on_next_submit = 0;
447	{
448	req_destroy (grp);
449	unblock_sig ();
450	croak (0);
451	}
452		411
453	req_destroy (grp);	412	PUSHMARK (SP);
454	unblock_sig ();	413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
455	}	415	}
456	}	416	}
457		417
458	static int req_invoke (aio_req req)	418	static int req_invoke (eio_req *req)
459	{	419	{
460	dSP;
461
462	if (req->flags & FLAG_SV2_RO_OFF)	420	if (req->flags & FLAG_SV2_RO_OFF)
463	SvREADONLY_off (req->sv2);	421	SvREADONLY_off (req->sv2);
464		422
465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	423	if (!EIO_CANCELLED (req) && req->callback)
466	{	424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
467	ENTER;	429	ENTER;
468	SAVETMPS;	430	SAVETMPS;
469	PUSHMARK (SP);	431	PUSHMARK (SP);
470	EXTEND (SP, 1);	432	EXTEND (SP, 1);
471		433
		434	/* do not recreate the result IV from scratch each time */
		435	if (expect_true (sv_result_cache))
		436	{
		437	sv_result = sv_result_cache; sv_result_cache = 0;
		438	SvIV_set (sv_result, req->result);
		439	SvIOK_only (sv_result);
		440	}
		441	else
		442	{
		443	sv_result = newSViv (req->result);
		444	SvREADONLY_on (sv_result);
		445	}
		446
472	switch (req->type)	447	switch (req->type)
473	{	448	{
474	case REQ_READDIR:	449	case EIO_READDIR:
475	{	450	{
476	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
477		452
478	if (req->result >= 0)	453	if (req->result >= 0)
479	{	454	{
480	int i;	455	int i;
481	char *buf = req->ptr2;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
482	AV *av = newAV ();	458	AV *av = newAV ();
483		459
484	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
485		461
486	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
487	{	463	{
488	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
489		467
		468	if (req->int1 & EIO_READDIR_CUSTOM2)
		469	{
		470	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		471	AV *avent = newAV ();
		472
		473	av_extend (avent, 2);
		474
		475	if (!sv_type [ent->type])
		476	{
		477	sv_type [ent->type] = newSViv (ent->type);
		478	SvREADONLY_on (sv_type [ent->type]);
		479	}
		480
		481	av_store (avent, 0, namesv);
		482	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		483	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		484
		485	av_store (av, i, newRV_noinc ((SV *)avent));
		486	}
		487	else
490	av_store (av, i, sv);	488	av_store (av, i, namesv);
		489
		490	++ent;
		491	}
		492	else
		493	{
		494	SV *name = newSVpv (names, 0);
		495	av_store (av, i, name);
491	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
492	}	498	}
493		499
494	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
495	}	501	}
496		502
497	PUSHs (rv);	503	PUSHs (rv);
		504
		505	if (req->int1 & EIO_READDIR_CUSTOM1)
		506	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
498	}	507	}
499	break;	508	break;
500		509
501	case REQ_OPEN:	510	case EIO_OPEN:
502	{	511	{
503	/* convert fd to fh */	512	/* convert fd to fh */
504	SV *fh;	513	SV *fh = &PL_sv_undef;
505		514
506	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
507	PUTBACK;	516	{
508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
509	SPAGAIN;	518	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		519	char sym [64];
		520	int symlen;
		521
		522	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		523	gv_init (gv, aio_stash, sym, symlen, 0);
510		524
511	fh = POPs;	525	symlen = snprintf (
512	PUSHMARK (SP);	526	sym,
		527	sizeof (sym),
		528	"%s&=%d",
		529	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		530	(int)req->result
		531	);
		532
		533	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		534	fh = (SV *)gv;
		535	}
		536
513	XPUSHs (fh);	537	PUSHs (fh);
514	}	538	}
515	break;	539	break;
516		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	if (req->result >= 0)
		547	{
		548	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		549	HV *hv = newHV ();
		550
		551	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		552
		553	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		554	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		555	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		556	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		557	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		558	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		559	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		560	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		561	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		562	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		563	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		564	}
		565
		566	PUSHs (rv);
		567	}
		568
		569	break;
		570
517	case REQ_GROUP:	571	case EIO_GROUP:
518	req->int1 = 2; /* mark group as finished */	572	req->int1 = 2; /* mark group as finished */
519		573
520	if (req->sv1)	574	if (req->sv1)
521	{	575	{
522	int i;	576	int i;
…		…
526	for (i = 0; i <= AvFILL (av); ++i)	580	for (i = 0; i <= AvFILL (av); ++i)
527	PUSHs (*av_fetch (av, i, 0));	581	PUSHs (*av_fetch (av, i, 0));
528	}	582	}
529	break;	583	break;
530		584
531	case REQ_NOP:	585	case EIO_NOP:
532	case REQ_BUSY:	586	case EIO_BUSY:
533	break;	587	break;
534		588
535	case REQ_READLINK:	589	case EIO_READLINK:
		590	case EIO_REALPATH:
536	if (req->result > 0)	591	if (req->result > 0)
537	{	592	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
538	SvCUR_set (req->sv2, req->result);
539	*SvEND (req->sv2) = 0;
540	PUSHs (req->sv2);
541	}
542	break;	593	break;
543		594
544	case REQ_STAT:	595	case EIO_STAT:
545	case REQ_LSTAT:	596	case EIO_LSTAT:
546	case REQ_FSTAT:	597	case EIO_FSTAT:
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	598	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;	599	PL_laststatval = req->result;
549	PL_statcache = *(Stat_t *)(req->ptr2);	600	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
550	PUSHs (sv_2mortal (newSViv (req->result)));	601	PUSHs (sv_result);
551	break;	602	break;
552		603
553	case REQ_READ:	604	case EIO_READ:
		605	{
554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	606	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
555	*SvEND (req->sv2) = 0;	607	*SvEND (req->sv2) = 0;
556	PUSHs (sv_2mortal (newSViv (req->result)));	608	SvPOK_only (req->sv2);
		609	SvSETMAGIC (req->sv2);
		610	PUSHs (sv_result);
		611	}
557	break;	612	break;
558		613
		614	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		615	if (req->result > 0)
		616	SvIV_set (sv_result, 0);
		617	/* FALLTHROUGH */
		618
559	default:	619	default:
560	PUSHs (sv_2mortal (newSViv (req->result)));	620	PUSHs (sv_result);
561	break;	621	break;
562	}	622	}
563		623
564	errno = req->errorno;	624	errno = req->errorno;
565		625
566	PUTBACK;	626	PUTBACK;
567	call_sv (req->callback, G_VOID | G_EVAL);	627	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
568	SPAGAIN;	628	SPAGAIN;
		629
		630	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		631	SvREFCNT_dec (sv_result);
		632	else
		633	sv_result_cache = sv_result;
569		634
570	FREETMPS;	635	FREETMPS;
571	LEAVE;	636	LEAVE;
		637
		638	PUTBACK;
572	}	639	}
573		640
574	if (req->grp)
575	{
576	aio_req grp = req->grp;
577
578	/* unlink request */
579	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
580	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
581
582	if (grp->grp_first == req)
583	grp->grp_first = req->grp_next;
584
585	aio_grp_dec (grp);
586	}
587
588	return !SvTRUE (ERRSV);	641	return !!SvTRUE (ERRSV);
589	}	642	}
590		643
591	static void req_destroy (aio_req req)	644	static void req_destroy (aio_req req)
592	{	645	{
593	if (req->self)	646	if (req->self)
…		…
598		651
599	SvREFCNT_dec (req->sv1);	652	SvREFCNT_dec (req->sv1);
600	SvREFCNT_dec (req->sv2);	653	SvREFCNT_dec (req->sv2);
601	SvREFCNT_dec (req->callback);	654	SvREFCNT_dec (req->callback);
602		655
603	if (req->flags & FLAG_PTR2_FREE)
604	free (req->ptr2);
605
606	Safefree (req);	656	Safefree (req);
607	}	657	}
608		658
609	static void req_cancel_subs (aio_req grp)	659	static void req_cancel_subs (aio_req grp)
610	{	660	{
611	aio_req sub;	661	aio_req sub;
612		662
613	if (grp->type != REQ_GROUP)	663	if (grp->type != EIO_GROUP)
614	return;	664	return;
615		665
616	SvREFCNT_dec (grp->sv2);	666	SvREFCNT_dec (grp->sv2);
617	grp->sv2 = 0;	667	grp->sv2 = 0;
618		668
619	for (sub = grp->grp_first; sub; sub = sub->grp_next)	669	eio_grp_cancel (grp);
620	req_cancel (sub);
621	}	670	}
622		671
623	static void req_cancel (aio_req req)	672	static void create_respipe (void)
624	{	673	{
625	req->flags |= FLAG_CANCELLED;	674	if (s_epipe_renew (&respipe))
626		675	croak ("IO::AIO: unable to initialize result pipe");
627	req_cancel_subs (req);
628	}	676	}
629		677
630	X_THREAD_PROC (aio_proc);
631
632	static void start_thread (void)
633	{
634	worker *wrk = calloc (1, sizeof (worker));
635
636	if (!wrk)
637	croak ("unable to allocate worker thread data");
638
639	X_LOCK (wrklock);
640
641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
642	{
643	wrk->prev = &wrk_first;
644	wrk->next = wrk_first.next;
645	wrk_first.next->prev = wrk;
646	wrk_first.next = wrk;
647	++started;
648	}
649	else
650	free (wrk);
651
652	X_UNLOCK (wrklock);
653	}
654
655	static void maybe_start_thread ()
656	{
657	if (get_nthreads () >= wanted)
658	return;
659
660	/* todo: maybe use idle here, but might be less exact */
661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
662	return;
663
664	start_thread ();
665	}
666
667	static void req_send (aio_req req)
668	{
669	block_sig ();
670
671	++nreqs;
672
673	X_LOCK (reqlock);
674	++nready;
675	reqq_push (&req_queue, req);
676	X_COND_SIGNAL (reqwait);
677	X_UNLOCK (reqlock);
678
679	unblock_sig ();
680
681	maybe_start_thread ();
682	}
683
684	static void end_thread (void)
685	{
686	aio_req req;
687
688	Newz (0, req, 1, aio_cb);
689
690	req->type = REQ_QUIT;
691	req->pri = PRI_MAX + PRI_BIAS;
692
693	X_LOCK (reqlock);
694	reqq_push (&req_queue, req);
695	X_COND_SIGNAL (reqwait);
696	X_UNLOCK (reqlock);
697
698	X_LOCK (wrklock);
699	--started;
700	X_UNLOCK (wrklock);
701	}
702
703	static void set_max_idle (int nthreads)
704	{
705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
706	max_idle = nthreads <= 0 ? 1 : nthreads;
707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
708	}
709
710	static void min_parallel (int nthreads)
711	{
712	if (wanted < nthreads)
713	wanted = nthreads;
714	}
715
716	static void max_parallel (int nthreads)
717	{
718	if (wanted > nthreads)
719	wanted = nthreads;
720
721	while (started > wanted)
722	end_thread ();
723	}
724
725	static void poll_wait ()	678	static void poll_wait (void)
726	{	679	{
727	fd_set rfd;
728
729	while (nreqs)	680	while (eio_nreqs ())
730	{	681	{
731	int size;	682	int size;
732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	683
		684	X_LOCK (reslock);
733	size = res_queue.size;	685	size = res_queue.size;
734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	686	X_UNLOCK (reslock);
735		687
736	if (size)	688	if (size)
737	return;	689	return;
738		690
739	maybe_start_thread ();	691	etp_maybe_start_thread ();
740		692
741	FD_ZERO(&rfd);	693	s_epipe_wait (&respipe);
742	FD_SET(respipe [0], &rfd);
743
744	select (respipe [0] + 1, &rfd, 0, 0, 0);
745	}	694	}
746	}	695	}
747		696
748	static int poll_cb ()	697	static int poll_cb (void)
749	{	698	{
750	dSP;
751	int count = 0;
752	int maxreqs = max_poll_reqs;
753	int do_croak = 0;
754	struct timeval tv_start, tv_now;
755	aio_req req;
756
757	if (max_poll_time)
758	gettimeofday (&tv_start, 0);
759
760	block_sig ();
761
762	for (;;)	699	for (;;)
763	{	700	{
764	for (;;)	701	int res = eio_poll ();
765	{
766	maybe_start_thread ();
767		702
768	X_LOCK (reslock);	703	if (res > 0)
769	req = reqq_shift (&res_queue);
770
771	if (req)
772	{
773	--npending;
774
775	if (!res_queue.size)
776	{
777	/* read any signals sent by the worker threads */
778	char buf [4];
779	while (read (respipe [0], buf, 4) == 4)
780	;
781	}
782	}
783
784	X_UNLOCK (reslock);
785
786	if (!req)
787	break;
788
789	--nreqs;
790
791	if (req->type == REQ_GROUP && req->size)
792	{
793	req->int1 = 1; /* mark request as delayed */
794	continue;
795	}
796	else
797	{
798	if (!req_invoke (req))
799	{
800	req_destroy (req);
801	unblock_sig ();
802	croak (0);	704	croak (0);
803	}
804		705
805	count++;	706	if (!max_outstanding || max_outstanding > eio_nreqs ())
806	}	707	return res;
807
808	req_destroy (req);
809
810	if (maxreqs && !--maxreqs)
811	break;
812
813	if (max_poll_time)
814	{
815	gettimeofday (&tv_now, 0);
816
817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
818	break;
819	}
820	}
821
822	if (nreqs <= max_outstanding)
823	break;
824		708
825	poll_wait ();	709	poll_wait ();
826
827	++maxreqs;
828	}	710	}
		711	}
829		712
830	unblock_sig ();	713	static void atfork_child (void)
831	return count;	714	{
		715	create_respipe ();
832	}	716	}
833		717
834	/*****************************************************************************/	718	/*****************************************************************************/
835	/* work around various missing functions */
836		719
837	#if !HAVE_PREADWRITE	720	#if !_POSIX_MAPPED_FILES
838	# define pread aio_pread	721	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
839	# define pwrite aio_pwrite	722	# define munmap(addr,length) (errno = ENOSYS, -1)
840
841	/*
842	* make our pread/pwrite safe against themselves, but not against
843	* normal read/write by using a mutex. slows down execution a lot,
844	* but that's your problem, not mine.
845	*/
846	static mutex_t preadwritelock = X_MUTEX_INIT;
847
848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
849	{
850	ssize_t res;
851	off_t ooffset;
852
853	X_LOCK (preadwritelock);
854	ooffset = lseek (fd, 0, SEEK_CUR);
855	lseek (fd, offset, SEEK_SET);
856	res = read (fd, buf, count);
857	lseek (fd, ooffset, SEEK_SET);
858	X_UNLOCK (preadwritelock);
859
860	return res;
861	}
862
863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
864	{
865	ssize_t res;
866	off_t ooffset;
867
868	X_LOCK (preadwritelock);
869	ooffset = lseek (fd, 0, SEEK_CUR);
870	lseek (fd, offset, SEEK_SET);
871	res = write (fd, buf, count);
872	lseek (fd, offset, SEEK_SET);
873	X_UNLOCK (preadwritelock);
874
875	return res;
876	}
877	#endif
878
879	#ifndef HAVE_FUTIMES
880
881	# define utimes(path,times) aio_utimes (path, times)
882	# define futimes(fd,times) aio_futimes (fd, times)
883
884	int aio_utimes (const char *filename, const struct timeval times[2])
885	{
886	if (times)
887	{
888	struct utimbuf buf;
889
890	buf.actime = times[0].tv_sec;
891	buf.modtime = times[1].tv_sec;
892
893	return utime (filename, &buf);
894	}
895	else
896	return utime (filename, 0);
897	}
898
899	int aio_futimes (int fd, const struct timeval tv[2])
900	{
901	errno = ENOSYS;
902	return -1;
903	}
904
905	#endif
906
907	#if !HAVE_FDATASYNC
908	# define fdatasync fsync
909	#endif
910
911	#if !HAVE_READAHEAD
912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
913
914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
915	{
916	size_t todo = count;
917	dBUF;
918
919	while (todo > 0)
920	{
921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
922
923	pread (fd, aio_buf, len, offset);
924	offset += len;
925	todo -= len;
926	}
927
928	errno = 0;
929	return count;
930	}
931
932	#endif
933
934	#if !HAVE_READDIR_R
935	# define readdir_r aio_readdir_r
936
937	static mutex_t readdirlock = X_MUTEX_INIT;
938
939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
940	{
941	X_DIRENT *e;
942	int errorno;
943
944	X_LOCK (readdirlock);
945
946	e = readdir (dirp);
947	errorno = errno;
948
949	if (e)
950	{
951	*res = ent;
952	strcpy (ent->d_name, e->d_name);
953	}
954	else
955	*res = 0;
956
957	X_UNLOCK (readdirlock);
958
959	errno = errorno;
960	return e ? 0 : -1;
961	}
962	#endif
963
964	/* sendfile always needs emulation */
965	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
966	{
967	ssize_t res;
968
969	if (!count)
970	return 0;
971
972	#if HAVE_SENDFILE
973	# if __linux
974	res = sendfile (ofd, ifd, &offset, count);
975
976	# elif __freebsd
977	/*
978	* Of course, the freebsd sendfile is a dire hack with no thoughts
979	* wasted on making it similar to other I/O functions.
980	*/
981	{
982	off_t sbytes;
983	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
984
985	if (res < 0 && sbytes)
986	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
987	res = sbytes;
988	}
989
990	# elif __hpux
991	res = sendfile (ofd, ifd, offset, count, 0, 0);
992
993	# elif __solaris
994	{
995	struct sendfilevec vec;
996	size_t sbytes;
997
998	vec.sfv_fd = ifd;
999	vec.sfv_flag = 0;
1000	vec.sfv_off = offset;
1001	vec.sfv_len = count;
1002
1003	res = sendfilev (ofd, &vec, 1, &sbytes);
1004
1005	if (res < 0 && sbytes)
1006	res = sbytes;
1007	}
1008
1009	# endif	723	#endif
1010	#else
1011	res = -1;
1012	errno = ENOSYS;
1013	#endif
1014		724
1015	if (res < 0	725	#if !_POSIX_MEMORY_PROTECTION
1016	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	726	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1017	#if __solaris	727	# define PROT_NONE 0
1018	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	728	# define PROT_WRITE 0
		729	# define MAP_PRIVATE 0
		730	# define MAP_SHARED 0
		731	# define MAP_FIXED 0
1019	#endif	732	#endif
1020	)
1021	)
1022	{
1023	/* emulate sendfile. this is a major pain in the ass */
1024	dBUF;
1025		733
1026	res = 0;	734	#define MMAP_MAGIC PERL_MAGIC_ext
1027		735
1028	while (count)	736	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
1029	{	737	{
1030	ssize_t cnt;	738	int old_errno = errno;
1031		739	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
1032	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	740	errno = old_errno;
1033		741
1034	if (cnt <= 0)	742	mg->mg_obj = 0; /* just in case */
1035	{
1036	if (cnt && !res) res = -1;
1037	break;
1038	}
1039		743
1040	cnt = write (ofd, aio_buf, cnt);	744	SvREADONLY_off (sv);
1041		745
1042	if (cnt <= 0)	746	if (SvPVX (sv) != mg->mg_ptr)
1043	{	747	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1044	if (cnt && !res) res = -1;
1045	break;
1046	}
1047		748
1048	offset += cnt;	749	SvCUR_set (sv, 0);
1049	res += cnt;	750	SvPVX (sv) = 0;
1050	count -= cnt;	751	SvOK_off (sv);
1051	}
1052	}
1053		752
1054	return res;	753	return 0;
1055	}	754	}
1056		755
1057	/* read a full directory */	756	static MGVTBL mmap_vtbl = {
1058	static void scandir_ (aio_req req, worker *self)	757	0, 0, 0, 0, mmap_free
1059	{	758	};
1060	DIR *dirp;
1061	union
1062	{
1063	X_DIRENT d;
1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1065	} *u;
1066	X_DIRENT *entp;
1067	char *name, *names;
1068	int memlen = 4096;
1069	int memofs = 0;
1070	int res = 0;
1071
1072	X_LOCK (wrklock);
1073	self->dirp = dirp = opendir (req->ptr1);
1074	self->dbuf = u = malloc (sizeof (*u));
1075	req->flags |= FLAG_PTR2_FREE;
1076	req->ptr2 = names = malloc (memlen);
1077	X_UNLOCK (wrklock);
1078
1079	if (dirp && u && names)
1080	for (;;)
1081	{
1082	errno = 0;
1083	readdir_r (dirp, &u->d, &entp);
1084
1085	if (!entp)
1086	break;
1087
1088	name = entp->d_name;
1089
1090	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1091	{
1092	int len = strlen (name) + 1;
1093
1094	res++;
1095
1096	while (memofs + len > memlen)
1097	{
1098	memlen *= 2;
1099	X_LOCK (wrklock);
1100	req->ptr2 = names = realloc (names, memlen);
1101	X_UNLOCK (wrklock);
1102
1103	if (!names)
1104	break;
1105	}
1106
1107	memcpy (names + memofs, name, len);
1108	memofs += len;
1109	}
1110	}
1111
1112	if (errno)
1113	res = -1;
1114
1115	req->result = res;
1116	}
1117		759
1118	/*****************************************************************************/	760	/*****************************************************************************/
1119		761
1120	X_THREAD_PROC (aio_proc)	762	static SV * get_cb (SV *cb_sv)
1121	{	763	{
1122	{//D	764	SvGETMAGIC (cb_sv);
1123	aio_req req;	765	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1124	struct timespec ts;
1125	worker *self = (worker *)thr_arg;
1126
1127	/* try to distribute timeouts somewhat randomly */
1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1129
1130	for (;;)
1131	{
1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1133
1134	X_LOCK (reqlock);
1135
1136	for (;;)
1137	{
1138	self->req = req = reqq_shift (&req_queue);
1139
1140	if (req)
1141	break;
1142
1143	++idle;
1144
1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1146	== ETIMEDOUT)
1147	{
1148	if (idle > max_idle)
1149	{
1150	--idle;
1151	X_UNLOCK (reqlock);
1152	X_LOCK (wrklock);
1153	--started;
1154	X_UNLOCK (wrklock);
1155	goto quit;
1156	}
1157
1158	/* we are allowed to idle, so do so without any timeout */
1159	X_COND_WAIT (reqwait, reqlock);
1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1161	}
1162
1163	--idle;
1164	}
1165
1166	--nready;
1167
1168	X_UNLOCK (reqlock);
1169
1170	errno = 0; /* strictly unnecessary */
1171
1172	if (!(req->flags & FLAG_CANCELLED))
1173	switch (req->type)
1174	{
1175	case REQ_READ: req->result = req->offs >= 0
1176	? pread (req->int1, req->ptr1, req->size, req->offs)
1177	: read (req->int1, req->ptr1, req->size); break;
1178	case REQ_WRITE: req->result = req->offs >= 0
1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1180	: write (req->int1, req->ptr1, req->size); break;
1181
1182	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1184
1185	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1186	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1188
1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1195
1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1197	case REQ_CLOSE: req->result = close (req->int1); break;
1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1206
1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
1209	case REQ_READDIR: scandir_ (req, self); break;
1210
1211	case REQ_BUSY:
1212	#ifdef _WIN32
1213	Sleep (req->nv1 * 1000.);
1214	#else
1215	{
1216	struct timeval tv;
1217
1218	tv.tv_sec = req->nv1;
1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1220
1221	req->result = select (0, 0, 0, 0, &tv);
1222	}
1223	#endif
1224	break;
1225
1226	case REQ_UTIME:
1227	case REQ_FUTIME:
1228	{
1229	struct timeval tv[2];
1230	struct timeval *times;
1231
1232	if (req->nv1 != -1. || req->nv2 != -1.)
1233	{
1234	tv[0].tv_sec = req->nv1;
1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1236	tv[1].tv_sec = req->nv2;
1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1238
1239	times = tv;
1240	}
1241	else
1242	times = 0;
1243
1244
1245	req->result = req->type == REQ_FUTIME
1246	? futimes (req->int1, times)
1247	: utimes (req->ptr1, times);
1248	}
1249
1250	case REQ_GROUP:
1251	case REQ_NOP:
1252	break;
1253
1254	case REQ_QUIT:
1255	goto quit;
1256
1257	default:
1258	req->result = -1;
1259	break;
1260	}
1261
1262	req->errorno = errno;
1263
1264	X_LOCK (reslock);
1265
1266	++npending;
1267
1268	if (!reqq_push (&res_queue, req))
1269	{
1270	/* write a dummy byte to the pipe so fh becomes ready */
1271	write (respipe [1], &respipe, 1);
1272
1273	/* optionally signal the main thread asynchronously */
1274	if (main_sig)
1275	pthread_kill (main_tid, main_sig);
1276	}
1277
1278	self->req = 0;
1279	worker_clear (self);
1280
1281	X_UNLOCK (reslock);
1282	}
1283
1284	quit:
1285	X_LOCK (wrklock);
1286	worker_free (self);
1287	X_UNLOCK (wrklock);
1288
1289	return 0;
1290	}//D
1291	}
1292
1293	/*****************************************************************************/
1294
1295	static void atfork_prepare (void)
1296	{
1297	X_LOCK (wrklock);
1298	X_LOCK (reqlock);
1299	X_LOCK (reslock);
1300	#if !HAVE_PREADWRITE
1301	X_LOCK (preadwritelock);
1302	#endif
1303	#if !HAVE_READDIR_R
1304	X_LOCK (readdirlock);
1305	#endif
1306	}
1307
1308	static void atfork_parent (void)
1309	{
1310	#if !HAVE_READDIR_R
1311	X_UNLOCK (readdirlock);
1312	#endif
1313	#if !HAVE_PREADWRITE
1314	X_UNLOCK (preadwritelock);
1315	#endif
1316	X_UNLOCK (reslock);
1317	X_UNLOCK (reqlock);
1318	X_UNLOCK (wrklock);
1319	}
1320
1321	static void atfork_child (void)
1322	{
1323	aio_req prv;
1324
1325	while (prv = reqq_shift (&req_queue))
1326	req_destroy (prv);
1327
1328	while (prv = reqq_shift (&res_queue))
1329	req_destroy (prv);
1330
1331	while (wrk_first.next != &wrk_first)
1332	{
1333	worker *wrk = wrk_first.next;
1334
1335	if (wrk->req)
1336	req_destroy (wrk->req);
1337
1338	worker_clear (wrk);
1339	worker_free (wrk);
1340	}
1341
1342	started = 0;
1343	idle = 0;
1344	nreqs = 0;
1345	nready = 0;
1346	npending = 0;
1347
1348	close (respipe [0]);
1349	close (respipe [1]);
1350
1351	if (!create_pipe (respipe))
1352	croak ("cannot set result pipe to nonblocking mode");
1353
1354	atfork_parent ();
1355	}	766	}
1356		767
1357	#define dREQ \	768	#define dREQ \
		769	SV *cb_cv; \
1358	aio_req req; \	770	aio_req req; \
1359	int req_pri = next_pri; \	771	int req_pri = next_pri; \
1360	next_pri = DEFAULT_PRI + PRI_BIAS; \	772	next_pri = EIO_PRI_DEFAULT; \
1361	\	773	\
1362	if (SvOK (callback) && !SvROK (callback)) \	774	cb_cv = get_cb (callback); \
1363	croak ("callback must be undef or of reference type"); \
1364	\	775	\
1365	Newz (0, req, 1, aio_cb); \	776	Newz (0, req, 1, eio_req); \
1366	if (!req) \	777	if (!req) \
1367	croak ("out of memory during aio_req allocation"); \	778	croak ("out of memory during eio_req allocation"); \
1368	\	779	\
1369	req->callback = newSVsv (callback); \	780	req->callback = SvREFCNT_inc (cb_cv); \
1370	req->pri = req_pri	781	req->pri = req_pri
1371		782
1372	#define REQ_SEND \	783	#define REQ_SEND \
		784	PUTBACK; \
1373	req_send (req); \	785	req_submit (req); \
		786	SPAGAIN; \
1374	\	787	\
1375	if (GIMME_V != G_VOID) \	788	if (GIMME_V != G_VOID) \
1376	XPUSHs (req_sv (req, AIO_REQ_KLASS));	789	XPUSHs (req_sv (req, aio_req_stash));
1377		790
1378	MODULE = IO::AIO PACKAGE = IO::AIO	791	MODULE = IO::AIO PACKAGE = IO::AIO
1379		792
1380	PROTOTYPES: ENABLE	793	PROTOTYPES: ENABLE
1381		794
1382	BOOT:	795	BOOT:
1383	{	796	{
		797	static const struct {
		798	const char *name;
		799	IV iv;
		800	} *civ, const_iv[] = {
		801	# define const_niv(name, value) { # name, (IV) value },
		802	# define const_iv(name) { # name, (IV) name },
		803	# define const_eio(name) { # name, (IV) EIO_ ## name },
		804	const_iv (EXDEV)
		805	const_iv (ENOSYS)
		806	const_iv (O_RDONLY)
		807	const_iv (O_WRONLY)
		808	const_iv (O_RDWR)
		809	const_iv (O_CREAT)
		810	const_iv (O_TRUNC)
		811	const_iv (O_EXCL)
		812	const_iv (O_APPEND)
		813
		814	const_iv (O_ASYNC)
		815	const_iv (O_DIRECT)
		816	const_iv (O_NOATIME)
		817
		818	const_iv (O_CLOEXEC)
		819	const_iv (O_NOCTTY)
		820	const_iv (O_NOFOLLOW)
		821	const_iv (O_NONBLOCK)
		822	const_iv (O_EXEC)
		823	const_iv (O_SEARCH)
		824	const_iv (O_DIRECTORY)
		825	const_iv (O_DSYNC)
		826	const_iv (O_RSYNC)
		827	const_iv (O_SYNC)
		828	const_iv (O_TTY_INIT)
		829
		830	const_iv (S_IFIFO)
		831	const_iv (S_IFCHR)
		832	const_iv (S_IFBLK)
		833	const_iv (S_IFLNK)
		834	const_iv (S_IFREG)
		835	const_iv (S_IFDIR)
		836	const_iv (S_IFWHT)
		837	const_iv (S_IFSOCK)
		838	const_iv (S_IFMT)
		839
		840	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		841	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		842	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		843	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		844	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		845	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		846
		847	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		848	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		849	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		850	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		851	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		852
		853	const_iv (ST_RDONLY)
		854	const_iv (ST_NOSUID)
		855	const_iv (ST_NODEV)
		856	const_iv (ST_NOEXEC)
		857	const_iv (ST_SYNCHRONOUS)
		858	const_iv (ST_MANDLOCK)
		859	const_iv (ST_WRITE)
		860	const_iv (ST_APPEND)
		861	const_iv (ST_IMMUTABLE)
		862	const_iv (ST_NOATIME)
		863	const_iv (ST_NODIRATIME)
		864	const_iv (ST_RELATIME)
		865
		866	const_iv (PROT_NONE)
		867	const_iv (PROT_EXEC)
		868	const_iv (PROT_READ)
		869	const_iv (PROT_WRITE)
		870
		871	/*const_iv (MAP_FIXED)*/
		872	const_iv (MAP_PRIVATE)
		873	const_iv (MAP_SHARED)
		874	const_iv (MAP_ANONYMOUS)
		875
		876	/* linuxish */
		877	const_iv (MAP_HUGETLB)
		878	const_iv (MAP_LOCKED)
		879	const_iv (MAP_NORESERVE)
		880	const_iv (MAP_POPULATE)
		881	const_iv (MAP_NONBLOCK)
		882
		883	const_eio (MCL_FUTURE)
		884	const_eio (MCL_CURRENT)
		885
		886	const_eio (MS_ASYNC)
		887	const_eio (MS_INVALIDATE)
		888	const_eio (MS_SYNC)
		889
		890	const_eio (MT_MODIFY)
		891
		892	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		893	const_eio (SYNC_FILE_RANGE_WRITE)
		894	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		895
		896	const_eio (READDIR_DENTS)
		897	const_eio (READDIR_DIRS_FIRST)
		898	const_eio (READDIR_STAT_ORDER)
		899	const_eio (READDIR_FOUND_UNKNOWN)
		900
		901	const_eio (DT_UNKNOWN)
		902	const_eio (DT_FIFO)
		903	const_eio (DT_CHR)
		904	const_eio (DT_DIR)
		905	const_eio (DT_BLK)
		906	const_eio (DT_REG)
		907	const_eio (DT_LNK)
		908	const_eio (DT_SOCK)
		909	const_eio (DT_WHT)
		910	};
		911
1384	HV *stash = gv_stashpv ("IO::AIO", 1);	912	aio_stash = gv_stashpv ("IO::AIO" , 1);
		913	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		914	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1385		915
1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	916	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	917	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1391	#ifdef _WIN32
1392	X_MUTEX_CHECK (wrklock);
1393	X_MUTEX_CHECK (reslock);
1394	X_MUTEX_CHECK (reqlock);
1395	X_MUTEX_CHECK (reqwait);
1396	X_MUTEX_CHECK (preadwritelock);
1397	X_MUTEX_CHECK (readdirlock);
1398	#else
1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1401	#endif
1402		918
1403	if (!create_pipe (respipe))	919	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1404	croak ("cannot set result pipe to nonblocking mode");
1405		920
1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	921	create_respipe ();
1407	}
1408		922
		923	if (eio_init (want_poll, done_poll) < 0)
		924	croak ("IO::AIO: unable to initialise eio library");
		925
		926	/* atfork child called in fifo order, so before eio's handler */
		927	X_THREAD_ATFORK (0, 0, atfork_child);
		928	}
		929
1409	void	930	void
1410	max_poll_reqs (int nreqs)	931	max_poll_reqs (unsigned int nreqs)
1411	PROTOTYPE: $	932	PROTOTYPE: $
1412	CODE:	933	CODE:
1413	max_poll_reqs = nreqs;	934	eio_set_max_poll_reqs (nreqs);
1414		935
1415	void	936	void
1416	max_poll_time (double nseconds)	937	max_poll_time (double nseconds)
1417	PROTOTYPE: $	938	PROTOTYPE: $
1418	CODE:	939	CODE:
1419	max_poll_time = nseconds * AIO_TICKS;	940	eio_set_max_poll_time (nseconds);
1420		941
1421	void	942	void
1422	min_parallel (int nthreads)	943	min_parallel (unsigned int nthreads)
1423	PROTOTYPE: $
1424
1425	void
1426	max_parallel (int nthreads)
1427	PROTOTYPE: $
1428
1429	void
1430	max_idle (int nthreads)
1431	PROTOTYPE: $	944	PROTOTYPE: $
1432	CODE:	945	CODE:
1433	set_max_idle (nthreads);	946	eio_set_min_parallel (nthreads);
1434		947
1435	int	948	void
1436	max_outstanding (int maxreqs)	949	max_parallel (unsigned int nthreads)
1437	PROTOTYPE: $	950	PROTOTYPE: $
1438	CODE:	951	CODE:
1439	RETVAL = max_outstanding;	952	eio_set_max_parallel (nthreads);
		953
		954	void
		955	max_idle (unsigned int nthreads)
		956	PROTOTYPE: $
		957	CODE:
		958	eio_set_max_idle (nthreads);
		959
		960	void
		961	idle_timeout (unsigned int seconds)
		962	PROTOTYPE: $
		963	CODE:
		964	eio_set_idle_timeout (seconds);
		965
		966	void
		967	max_outstanding (unsigned int maxreqs)
		968	PROTOTYPE: $
		969	CODE:
1440	max_outstanding = maxreqs;	970	max_outstanding = maxreqs;
1441	OUTPUT:
1442	RETVAL
1443		971
1444	void	972	void
1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	973	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1446	PROTOTYPE: $$$;$
1447	PPCODE:	974	PPCODE:
1448	{	975	{
1449	dREQ;	976	dREQ;
1450		977
1451	req->type = REQ_OPEN;	978	req->type = EIO_OPEN;
1452	req->sv1 = newSVsv (pathname);	979	req->sv1 = newSVsv (pathname);
1453	req->ptr1 = SvPVbyte_nolen (req->sv1);	980	req->ptr1 = SvPVbyte_nolen (req->sv1);
1454	req->int1 = flags;	981	req->int1 = flags;
1455	req->mode = mode;	982	req->int2 = mode;
1456		983
1457	REQ_SEND;	984	REQ_SEND;
1458	}	985	}
1459		986
1460	void	987	void
1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)	988	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1462	PROTOTYPE: $;$
1463	ALIAS:	989	ALIAS:
1464	aio_close = REQ_CLOSE
1465	aio_fsync = REQ_FSYNC	990	aio_fsync = EIO_FSYNC
1466	aio_fdatasync = REQ_FDATASYNC	991	aio_fdatasync = EIO_FDATASYNC
1467	PPCODE:	992	PPCODE:
1468	{	993	{
		994	int fd = s_fileno_croak (fh, 0);
1469	dREQ;	995	dREQ;
1470		996
1471	req->type = ix;	997	req->type = ix;
1472	req->sv1 = newSVsv (fh);	998	req->sv1 = newSVsv (fh);
1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	999	req->int1 = fd;
		1000
		1001	REQ_SEND (req);
		1002	}
		1003
		1004	void
		1005	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1006	PPCODE:
		1007	{
		1008	int fd = s_fileno_croak (fh, 0);
		1009	dREQ;
		1010
		1011	req->type = EIO_SYNC_FILE_RANGE;
		1012	req->sv1 = newSVsv (fh);
		1013	req->int1 = fd;
		1014	req->offs = offset;
		1015	req->size = nbytes;
		1016	req->int2 = flags;
		1017
		1018	REQ_SEND (req);
		1019	}
		1020
		1021	void
		1022	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1023	PPCODE:
		1024	{
		1025	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1026	int fd = s_fileno_croak (fh, 0);
		1027	dREQ;
		1028
		1029	if (close_pipe < 0)
		1030	{
		1031	int pipefd [2];
		1032
		1033	if (pipe (pipefd) < 0
		1034	|| close (pipefd [1]) < 0
		1035	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1036	abort (); /*D*/
		1037
		1038	close_pipe = pipefd [0];
		1039	}
		1040
		1041	req->type = EIO_DUP2;
		1042	req->int1 = close_pipe;
		1043	req->sv2 = newSVsv (fh);
		1044	req->int2 = fd;
1474		1045
1475	REQ_SEND (req);	1046	REQ_SEND (req);
1476	}	1047	}
1477		1048
1478	void	1049	void
1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1050	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1480	ALIAS:	1051	ALIAS:
1481	aio_read = REQ_READ	1052	aio_read = EIO_READ
1482	aio_write = REQ_WRITE	1053	aio_write = EIO_WRITE
1483	PROTOTYPE: $$$$$;$
1484	PPCODE:	1054	PPCODE:
1485	{	1055	{
1486	STRLEN svlen;	1056	STRLEN svlen;
		1057	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1487	char *svptr = SvPVbyte (data, svlen);	1058	char *svptr = SvPVbyte (data, svlen);
1488	UV len = SvUV (length);	1059	UV len = SvUV (length);
1489		1060
1490	SvUPGRADE (data, SVt_PV);
1491	SvPOK_on (data);
1492
1493	if (dataoffset < 0)	1061	if (dataoffset < 0)
1494	dataoffset += svlen;	1062	dataoffset += svlen;
1495		1063
1496	if (dataoffset < 0 || dataoffset > svlen)	1064	if (dataoffset < 0 || dataoffset > svlen)
1497	croak ("dataoffset outside of data scalar");	1065	croak ("dataoffset outside of data scalar");
1498		1066
1499	if (ix == REQ_WRITE)	1067	if (ix == EIO_WRITE)
1500	{	1068	{
1501	/* write: check length and adjust. */	1069	/* write: check length and adjust. */
1502	if (!SvOK (length) || len + dataoffset > svlen)	1070	if (!SvOK (length) || len + dataoffset > svlen)
1503	len = svlen - dataoffset;	1071	len = svlen - dataoffset;
1504	}	1072	}
1505	else	1073	else
1506	{	1074	{
1507	/* read: grow scalar as necessary */	1075	/* read: check type and grow scalar as necessary */
		1076	SvUPGRADE (data, SVt_PV);
1508	svptr = SvGROW (data, len + dataoffset + 1);	1077	svptr = SvGROW (data, len + dataoffset + 1);
1509	}	1078	}
1510		1079
1511	if (len < 0)
1512	croak ("length must not be negative");
1513
1514	{	1080	{
1515	dREQ;	1081	dREQ;
1516		1082
1517	req->type = ix;	1083	req->type = ix;
1518	req->sv1 = newSVsv (fh);	1084	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1085	req->int1 = fd;
1520	: IoOFP (sv_2io (fh)));
1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1086	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1522	req->size = len;	1087	req->size = len;
1523	req->sv2 = SvREFCNT_inc (data);	1088	req->sv2 = SvREFCNT_inc (data);
1524	req->ptr1 = (char *)svptr + dataoffset;	1089	req->ptr2 = (char *)svptr + dataoffset;
1525	req->stroffset = dataoffset;	1090	req->stroffset = dataoffset;
1526		1091
1527	if (!SvREADONLY (data))	1092	if (!SvREADONLY (data))
1528	{	1093	{
1529	SvREADONLY_on (data);	1094	SvREADONLY_on (data);
…		…
1534	}	1099	}
1535	}	1100	}
1536		1101
1537	void	1102	void
1538	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1103	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1539	PROTOTYPE: $$;$	1104	ALIAS:
		1105	aio_readlink = EIO_READLINK
		1106	aio_realpath = EIO_REALPATH
1540	PPCODE:	1107	PPCODE:
1541	{	1108	{
1542	SV *data;	1109	SV *data;
1543	dREQ;	1110	dREQ;
1544		1111
1545	data = newSV (NAME_MAX);
1546	SvPOK_on (data);
1547
1548	req->type = REQ_READLINK;	1112	req->type = ix;
1549	req->sv1 = newSVsv (path);	1113	req->sv1 = newSVsv (path);
1550	req->ptr2 = SvPVbyte_nolen (req->sv1);	1114	req->ptr1 = SvPVbyte_nolen (req->sv1);
1551	req->sv2 = data;
1552	req->ptr1 = SvPVbyte_nolen (data);
1553		1115
1554	REQ_SEND;	1116	REQ_SEND;
1555	}	1117	}
1556		1118
1557	void	1119	void
1558	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1120	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1559	PROTOTYPE: $$$$;$
1560	PPCODE:	1121	PPCODE:
1561	{	1122	{
		1123	int ifd = s_fileno_croak (in_fh , 0);
		1124	int ofd = s_fileno_croak (out_fh, 1);
1562	dREQ;	1125	dREQ;
1563		1126
1564	req->type = REQ_SENDFILE;	1127	req->type = EIO_SENDFILE;
1565	req->sv1 = newSVsv (out_fh);	1128	req->sv1 = newSVsv (out_fh);
1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1129	req->int1 = ofd;
1567	req->sv2 = newSVsv (in_fh);	1130	req->sv2 = newSVsv (in_fh);
1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1131	req->int2 = ifd;
1569	req->offs = SvVAL64 (in_offset);	1132	req->offs = in_offset;
1570	req->size = length;	1133	req->size = length;
1571		1134
1572	REQ_SEND;	1135	REQ_SEND;
1573	}	1136	}
1574		1137
1575	void	1138	void
1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1139	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1577	PROTOTYPE: $$$;$
1578	PPCODE:	1140	PPCODE:
1579	{	1141	{
		1142	int fd = s_fileno_croak (fh, 0);
1580	dREQ;	1143	dREQ;
1581		1144
1582	req->type = REQ_READAHEAD;	1145	req->type = EIO_READAHEAD;
1583	req->sv1 = newSVsv (fh);	1146	req->sv1 = newSVsv (fh);
1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1147	req->int1 = fd;
1585	req->offs = SvVAL64 (offset);	1148	req->offs = offset;
1586	req->size = length;	1149	req->size = length;
1587		1150
1588	REQ_SEND;	1151	REQ_SEND;
1589	}	1152	}
1590		1153
1591	void	1154	void
1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1155	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1593	ALIAS:	1156	ALIAS:
1594	aio_stat = REQ_STAT	1157	aio_stat = EIO_STAT
1595	aio_lstat = REQ_LSTAT	1158	aio_lstat = EIO_LSTAT
		1159	aio_statvfs = EIO_STATVFS
1596	PPCODE:	1160	PPCODE:
1597	{	1161	{
1598	dREQ;	1162	dREQ;
1599		1163
1600	req->ptr2 = malloc (sizeof (Stat_t));
1601	if (!req->ptr2)
1602	{
1603	req_destroy (req);
1604	croak ("out of memory during aio_stat statdata allocation");
1605	}
1606
1607	req->flags |= FLAG_PTR2_FREE;
1608	req->sv1 = newSVsv (fh_or_path);	1164	req->sv1 = newSVsv (fh_or_path);
1609		1165
1610	if (SvPOK (fh_or_path))	1166	if (SvPOK (req->sv1))
1611	{	1167	{
1612	req->type = ix;	1168	req->type = ix;
1613	req->ptr1 = SvPVbyte_nolen (req->sv1);	1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
1614	}	1170	}
1615	else	1171	else
1616	{	1172	{
1617	req->type = REQ_FSTAT;	1173	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1174	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1619	}	1175	}
1620		1176
1621	REQ_SEND;	1177	REQ_SEND;
1622	}	1178	}
		1179
		1180	UV
		1181	major (UV dev)
		1182	ALIAS:
		1183	minor = 1
		1184	CODE:
		1185	RETVAL = ix ? major (dev) : minor (dev);
		1186	OUTPUT:
		1187	RETVAL
		1188
		1189	UV
		1190	makedev (UV maj, UV min)
		1191	CODE:
		1192	RETVAL = makedev (maj, min);
		1193	OUTPUT:
		1194	RETVAL
1623		1195
1624	void	1196	void
1625	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1197	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1626	PPCODE:	1198	PPCODE:
1627	{	1199	{
…		…
1629		1201
1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1202	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1203	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1632	req->sv1 = newSVsv (fh_or_path);	1204	req->sv1 = newSVsv (fh_or_path);
1633		1205
1634	if (SvPOK (fh_or_path))	1206	if (SvPOK (req->sv1))
1635	{	1207	{
1636	req->type = REQ_UTIME;	1208	req->type = EIO_UTIME;
1637	req->ptr1 = SvPVbyte_nolen (req->sv1);	1209	req->ptr1 = SvPVbyte_nolen (req->sv1);
1638	}	1210	}
1639	else	1211	else
1640	{	1212	{
1641	req->type = REQ_FUTIME;	1213	req->type = EIO_FUTIME;
1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1214	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1643	}	1215	}
1644		1216
1645	REQ_SEND;	1217	REQ_SEND;
1646	}	1218	}
…		…
1652	dREQ;	1224	dREQ;
1653		1225
1654	req->sv1 = newSVsv (fh_or_path);	1226	req->sv1 = newSVsv (fh_or_path);
1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1227	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1656		1228
1657	if (SvPOK (fh_or_path))	1229	if (SvPOK (req->sv1))
1658	{	1230	{
1659	req->type = REQ_TRUNCATE;	1231	req->type = EIO_TRUNCATE;
1660	req->ptr1 = SvPVbyte_nolen (req->sv1);	1232	req->ptr1 = SvPVbyte_nolen (req->sv1);
1661	}	1233	}
1662	else	1234	else
1663	{	1235	{
1664	req->type = REQ_FTRUNCATE;	1236	req->type = EIO_FTRUNCATE;
1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1237	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1666	}	1238	}
1667		1239
1668	REQ_SEND;	1240	REQ_SEND;
1669	}	1241	}
1670		1242
1671	void	1243	void
1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1244	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1245	ALIAS:
		1246	aio_chmod = EIO_CHMOD
		1247	aio_mkdir = EIO_MKDIR
1673	PPCODE:	1248	PPCODE:
1674	{	1249	{
1675	dREQ;	1250	dREQ;
1676		1251
1677	req->mode = mode;	1252	req->int2 = mode;
1678	req->sv1 = newSVsv (fh_or_path);	1253	req->sv1 = newSVsv (fh_or_path);
1679		1254
1680	if (SvPOK (fh_or_path))	1255	if (SvPOK (req->sv1))
1681	{	1256	{
1682	req->type = REQ_CHMOD;	1257	req->type = ix;
1683	req->ptr1 = SvPVbyte_nolen (req->sv1);	1258	req->ptr1 = SvPVbyte_nolen (req->sv1);
1684	}	1259	}
1685	else	1260	else
1686	{	1261	{
1687	req->type = REQ_FCHMOD;	1262	req->type = EIO_FCHMOD;
1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1263	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1689	}	1264	}
1690		1265
1691	REQ_SEND;	1266	REQ_SEND;
1692	}	1267	}
…		…
1699		1274
1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1275	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1276	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1702	req->sv1 = newSVsv (fh_or_path);	1277	req->sv1 = newSVsv (fh_or_path);
1703		1278
1704	if (SvPOK (fh_or_path))	1279	if (SvPOK (req->sv1))
1705	{	1280	{
1706	req->type = REQ_CHOWN;	1281	req->type = EIO_CHOWN;
1707	req->ptr1 = SvPVbyte_nolen (req->sv1);	1282	req->ptr1 = SvPVbyte_nolen (req->sv1);
1708	}	1283	}
1709	else	1284	else
1710	{	1285	{
1711	req->type = REQ_FCHOWN;	1286	req->type = EIO_FCHOWN;
1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1287	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1713	}	1288	}
1714		1289
1715	REQ_SEND;	1290	REQ_SEND;
1716	}	1291	}
1717		1292
1718	void	1293	void
		1294	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1295	PPCODE:
		1296	{
		1297	dREQ;
		1298
		1299	req->type = EIO_READDIR;
		1300	req->sv1 = newSVsv (pathname);
		1301	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1302	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1303
		1304	if (flags & EIO_READDIR_DENTS)
		1305	req->int1 |= EIO_READDIR_CUSTOM2;
		1306
		1307	REQ_SEND;
		1308	}
		1309
		1310	void
1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1311	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1720	ALIAS:	1312	ALIAS:
1721	aio_unlink = REQ_UNLINK	1313	aio_unlink = EIO_UNLINK
1722	aio_rmdir = REQ_RMDIR	1314	aio_rmdir = EIO_RMDIR
1723	aio_readdir = REQ_READDIR	1315	aio_readdir = EIO_READDIR
1724	PPCODE:	1316	PPCODE:
1725	{	1317	{
1726	dREQ;	1318	dREQ;
1727		1319
1728	req->type = ix;	1320	req->type = ix;
…		…
1731		1323
1732	REQ_SEND;	1324	REQ_SEND;
1733	}	1325	}
1734		1326
1735	void	1327	void
1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1737	PPCODE:
1738	{
1739	dREQ;
1740
1741	req->type = REQ_MKDIR;
1742	req->sv1 = newSVsv (pathname);
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	req->mode = mode;
1745
1746	REQ_SEND;
1747	}
1748
1749	void
1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1328	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1751	ALIAS:	1329	ALIAS:
1752	aio_link = REQ_LINK	1330	aio_link = EIO_LINK
1753	aio_symlink = REQ_SYMLINK	1331	aio_symlink = EIO_SYMLINK
1754	aio_rename = REQ_RENAME	1332	aio_rename = EIO_RENAME
1755	PPCODE:	1333	PPCODE:
1756	{	1334	{
1757	dREQ;	1335	dREQ;
1758		1336
1759	req->type = ix;	1337	req->type = ix;
1760	req->sv2 = newSVsv (oldpath);	1338	req->sv1 = newSVsv (oldpath);
		1339	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1340	req->sv2 = newSVsv (newpath);
1761	req->ptr2 = SvPVbyte_nolen (req->sv2);	1341	req->ptr2 = SvPVbyte_nolen (req->sv2);
1762	req->sv1 = newSVsv (newpath);
1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1764		1342
1765	REQ_SEND;	1343	REQ_SEND;
1766	}	1344	}
1767		1345
1768	void	1346	void
1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1347	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1770	PPCODE:	1348	PPCODE:
1771	{	1349	{
1772	dREQ;	1350	dREQ;
1773		1351
1774	req->type = REQ_MKNOD;	1352	req->type = EIO_MKNOD;
1775	req->sv1 = newSVsv (pathname);	1353	req->sv1 = newSVsv (pathname);
1776	req->ptr1 = SvPVbyte_nolen (req->sv1);	1354	req->ptr1 = SvPVbyte_nolen (req->sv1);
1777	req->mode = (mode_t)mode;	1355	req->int2 = (mode_t)mode;
1778	req->offs = dev;	1356	req->offs = dev;
1779		1357
1780	REQ_SEND;	1358	REQ_SEND;
1781	}	1359	}
1782		1360
1783	void	1361	void
		1362	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1363	ALIAS:
		1364	aio_mtouch = EIO_MTOUCH
		1365	aio_msync = EIO_MSYNC
		1366	PPCODE:
		1367	{
		1368	STRLEN svlen;
		1369	char *svptr = SvPVbyte (data, svlen);
		1370	UV len = SvUV (length);
		1371
		1372	if (offset < 0)
		1373	offset += svlen;
		1374
		1375	if (offset < 0 || offset > svlen)
		1376	croak ("offset outside of scalar");
		1377
		1378	if (!SvOK (length) || len + offset > svlen)
		1379	len = svlen - offset;
		1380
		1381	{
		1382	dREQ;
		1383
		1384	req->type = ix;
		1385	req->sv2 = SvREFCNT_inc (data);
		1386	req->ptr2 = (char *)svptr + offset;
		1387	req->size = len;
		1388	req->int1 = flags;
		1389
		1390	REQ_SEND;
		1391	}
		1392	}
		1393
		1394	void
		1395	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1396	PPCODE:
		1397	{
		1398	STRLEN svlen;
		1399	char *svptr = SvPVbyte (data, svlen);
		1400	UV len = SvUV (length);
		1401
		1402	if (offset < 0)
		1403	offset += svlen;
		1404
		1405	if (offset < 0 || offset > svlen)
		1406	croak ("offset outside of scalar");
		1407
		1408	if (!SvOK (length) || len + offset > svlen)
		1409	len = svlen - offset;
		1410
		1411	{
		1412	dREQ;
		1413
		1414	req->type = EIO_MLOCK;
		1415	req->sv2 = SvREFCNT_inc (data);
		1416	req->ptr2 = (char *)svptr + offset;
		1417	req->size = len;
		1418
		1419	REQ_SEND;
		1420	}
		1421	}
		1422
		1423	void
		1424	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1425	PPCODE:
		1426	{
		1427	dREQ;
		1428
		1429	req->type = EIO_MLOCKALL;
		1430	req->int1 = flags;
		1431
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
1784	aio_busy (double delay, SV *callback=&PL_sv_undef)	1436	aio_busy (double delay, SV *callback=&PL_sv_undef)
1785	PPCODE:	1437	PPCODE:
1786	{	1438	{
1787	dREQ;	1439	dREQ;
1788		1440
1789	req->type = REQ_BUSY;	1441	req->type = EIO_BUSY;
1790	req->nv1 = delay < 0. ? 0. : delay;	1442	req->nv1 = delay < 0. ? 0. : delay;
1791		1443
1792	REQ_SEND;	1444	REQ_SEND;
1793	}	1445	}
1794		1446
1795	void	1447	void
1796	aio_group (SV *callback=&PL_sv_undef)	1448	aio_group (SV *callback=&PL_sv_undef)
1797	PROTOTYPE: ;$
1798	PPCODE:	1449	PPCODE:
1799	{	1450	{
1800	dREQ;	1451	dREQ;
1801		1452
1802	req->type = REQ_GROUP;	1453	req->type = EIO_GROUP;
1803		1454
1804	req_send (req);	1455	req_submit (req);
1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1456	XPUSHs (req_sv (req, aio_grp_stash));
1806	}	1457	}
1807		1458
1808	void	1459	void
1809	aio_nop (SV *callback=&PL_sv_undef)	1460	aio_nop (SV *callback=&PL_sv_undef)
		1461	ALIAS:
		1462	aio_nop = EIO_NOP
		1463	aio_sync = EIO_SYNC
1810	PPCODE:	1464	PPCODE:
1811	{	1465	{
1812	dREQ;	1466	dREQ;
1813		1467
1814	req->type = REQ_NOP;	1468	req->type = ix;
1815		1469
1816	REQ_SEND;	1470	REQ_SEND;
1817	}	1471	}
1818		1472
1819	int	1473	int
1820	aioreq_pri (int pri = 0)	1474	aioreq_pri (int pri = 0)
1821	PROTOTYPE: ;$
1822	CODE:	1475	CODE:
1823	RETVAL = next_pri - PRI_BIAS;	1476	RETVAL = next_pri;
1824	if (items > 0)	1477	if (items > 0)
1825	{	1478	{
1826	if (pri < PRI_MIN) pri = PRI_MIN;	1479	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1827	if (pri > PRI_MAX) pri = PRI_MAX;	1480	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1828	next_pri = pri + PRI_BIAS;	1481	next_pri = pri;
1829	}	1482	}
1830	OUTPUT:	1483	OUTPUT:
1831	RETVAL	1484	RETVAL
1832		1485
1833	void	1486	void
1834	aioreq_nice (int nice = 0)	1487	aioreq_nice (int nice = 0)
1835	CODE:	1488	CODE:
1836	nice = next_pri - nice;	1489	nice = next_pri - nice;
1837	if (nice < PRI_MIN) nice = PRI_MIN;	1490	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1838	if (nice > PRI_MAX) nice = PRI_MAX;	1491	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1839	next_pri = nice + PRI_BIAS;	1492	next_pri = nice;
1840		1493
1841	void	1494	void
1842	flush ()	1495	flush ()
1843	PROTOTYPE:
1844	CODE:	1496	CODE:
1845	while (nreqs)	1497	while (eio_nreqs ())
1846	{	1498	{
1847	poll_wait ();	1499	poll_wait ();
1848	poll_cb ();	1500	poll_cb ();
1849	}	1501	}
1850		1502
1851	int	1503	int
1852	poll()	1504	poll ()
1853	PROTOTYPE:
1854	CODE:	1505	CODE:
1855	poll_wait ();	1506	poll_wait ();
1856	RETVAL = poll_cb ();	1507	RETVAL = poll_cb ();
1857	OUTPUT:	1508	OUTPUT:
1858	RETVAL	1509	RETVAL
1859		1510
1860	int	1511	int
1861	poll_fileno()	1512	poll_fileno ()
1862	PROTOTYPE:
1863	CODE:	1513	CODE:
1864	RETVAL = respipe [0];	1514	RETVAL = s_epipe_fd (&respipe);
1865	OUTPUT:	1515	OUTPUT:
1866	RETVAL	1516	RETVAL
1867		1517
1868	int	1518	int
1869	poll_cb(...)	1519	poll_cb (...)
1870	PROTOTYPE:	1520	PROTOTYPE:
1871	CODE:	1521	CODE:
1872	RETVAL = poll_cb ();	1522	RETVAL = poll_cb ();
1873	OUTPUT:	1523	OUTPUT:
1874	RETVAL	1524	RETVAL
1875		1525
1876	void	1526	void
1877	poll_wait()	1527	poll_wait ()
1878	PROTOTYPE:
1879	CODE:	1528	CODE:
1880	poll_wait ();	1529	poll_wait ();
1881		1530
1882	void
1883	setsig (int signum = SIGIO)
1884	PROTOTYPE: ;$
1885	CODE:
1886	{
1887	if (block_sig_level)
1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1889
1890	X_LOCK (reslock);
1891	main_tid = pthread_self ();
1892	main_sig = signum;
1893	X_UNLOCK (reslock);
1894
1895	if (main_sig && npending)
1896	pthread_kill (main_tid, main_sig);
1897	}
1898
1899	void
1900	aio_block (SV *cb)
1901	PROTOTYPE: &
1902	PPCODE:
1903	{
1904	int count;
1905
1906	block_sig ();
1907	PUSHMARK (SP);
1908	PUTBACK;
1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1910	SPAGAIN;
1911	unblock_sig ();
1912
1913	if (SvTRUE (ERRSV))
1914	croak (0);
1915
1916	XSRETURN (count);
1917	}
1918
1919	int	1531	int
1920	nreqs()	1532	nreqs ()
1921	PROTOTYPE:
1922	CODE:	1533	CODE:
1923	RETVAL = nreqs;	1534	RETVAL = eio_nreqs ();
1924	OUTPUT:	1535	OUTPUT:
1925	RETVAL	1536	RETVAL
1926		1537
1927	int	1538	int
1928	nready()	1539	nready ()
1929	PROTOTYPE:
1930	CODE:	1540	CODE:
1931	RETVAL = get_nready ();	1541	RETVAL = eio_nready ();
1932	OUTPUT:	1542	OUTPUT:
1933	RETVAL	1543	RETVAL
1934		1544
1935	int	1545	int
1936	npending()	1546	npending ()
1937	PROTOTYPE:
1938	CODE:	1547	CODE:
1939	RETVAL = get_npending ();	1548	RETVAL = eio_npending ();
1940	OUTPUT:	1549	OUTPUT:
1941	RETVAL	1550	RETVAL
1942		1551
1943	int	1552	int
1944	nthreads()	1553	nthreads ()
1945	PROTOTYPE:
1946	CODE:	1554	CODE:
1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1555	RETVAL = eio_nthreads ();
1948	RETVAL = started;
1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1950	OUTPUT:	1556	OUTPUT:
1951	RETVAL	1557	RETVAL
1952		1558
		1559	int
		1560	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1561	CODE:
		1562	RETVAL = posix_fadvise (fh, offset, length, advice);
		1563	OUTPUT:
		1564	RETVAL
		1565
		1566	ssize_t
		1567	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1568	CODE:
		1569	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1570	OUTPUT:
		1571	RETVAL
		1572
		1573	void
		1574	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1575	PPCODE:
		1576	sv_unmagic (scalar, MMAP_MAGIC);
		1577	{
		1578	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1579	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1580	if (addr == (void *)-1)
		1581	XSRETURN_NO;
		1582
		1583	sv_force_normal (scalar);
		1584
		1585	/* we store the length in mg_obj, as namlen is I32 :/ */
		1586	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1587	->mg_obj = (SV *)length;
		1588
		1589	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1590
		1591	if (!(prot & PROT_WRITE))
		1592	SvREADONLY_on (scalar);
		1593
		1594	if (SvLEN (scalar))
		1595	Safefree (SvPVX (scalar));
		1596
		1597	SvPVX (scalar) = (char *)addr;
		1598	SvCUR_set (scalar, length);
		1599	SvLEN_set (scalar, 0);
		1600	SvPOK_only (scalar);
		1601
		1602	XSRETURN_YES;
		1603	}
		1604
		1605	void
		1606	munmap (SV *scalar)
		1607	CODE:
		1608	sv_unmagic (scalar, MMAP_MAGIC);
		1609
		1610	int
		1611	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1612	ALIAS:
		1613	mprotect = 1
		1614	CODE:
		1615	{
		1616	STRLEN svlen;
		1617	void *addr = SvPVbyte (scalar, svlen);
		1618	size_t len = SvUV (length);
		1619
		1620	if (offset < 0)
		1621	offset += svlen;
		1622
		1623	if (offset < 0 || offset > svlen)
		1624	croak ("offset outside of scalar");
		1625
		1626	if (!SvOK (length) || len + offset > svlen)
		1627	len = svlen - offset;
		1628
		1629	addr = (void *)(((intptr_t)addr) + offset);
		1630	eio_page_align (&addr, &len);
		1631
		1632	switch (ix)
		1633	{
		1634	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1635	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1636	}
		1637	}
		1638	OUTPUT:
		1639	RETVAL
		1640
		1641	int
		1642	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1643	CODE:
		1644	{
		1645	STRLEN svlen;
		1646	void *addr = SvPVbyte (scalar, svlen);
		1647	size_t len = SvUV (length);
		1648
		1649	if (offset < 0)
		1650	offset += svlen;
		1651
		1652	if (offset < 0 || offset > svlen)
		1653	croak ("offset outside of scalar");
		1654
		1655	if (!SvOK (length) || len + offset > svlen)
		1656	len = svlen - offset;
		1657
		1658	addr = (void *)(((intptr_t)addr) + offset);
		1659	eio_page_align (&addr, &len);
		1660	#if _POSIX_MEMLOCK_RANGE
		1661	RETVAL = munlock (addr, len);
		1662	#else
		1663	RETVAL = ((errno = ENOSYS), -1);
		1664	#endif
		1665	}
		1666	OUTPUT:
		1667	RETVAL
		1668
		1669	int
		1670	munlockall ()
		1671	CODE:
		1672	#if _POSIX_MEMLOCK
		1673	munlockall ();
		1674	#else
		1675	RETVAL = -1;
		1676	errno = ENOSYS;
		1677	#endif
		1678	OUTPUT:
		1679	RETVAL
		1680
		1681	void _on_next_submit (SV *cb)
		1682	CODE:
		1683	SvREFCNT_dec (on_next_submit);
		1684	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1685
1953	PROTOTYPES: DISABLE	1686	PROTOTYPES: DISABLE
1954		1687
1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1688	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1956		1689
1957	void	1690	void
1958	cancel (aio_req_ornot req)	1691	cancel (aio_req_ornot req)
1959	CODE:	1692	CODE:
1960	req_cancel (req);	1693	eio_cancel (req);
1961		1694
1962	void	1695	void
1963	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1696	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1964	CODE:	1697	PPCODE:
		1698	{
		1699	if (GIMME_V != G_VOID)
		1700	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1701
		1702	if (items > 1)
		1703	{
		1704	SV *cb_cv =get_cb (callback);
		1705
1965	SvREFCNT_dec (req->callback);	1706	SvREFCNT_dec (req->callback);
1966	req->callback = newSVsv (callback);	1707	req->callback = SvREFCNT_inc (cb_cv);
		1708	}
		1709	}
1967		1710
1968	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1711	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1969		1712
1970	void	1713	void
1971	add (aio_req grp, ...)	1714	add (aio_req grp, ...)
1972	PPCODE:	1715	PPCODE:
1973	{	1716	{
1974	int i;	1717	int i;
1975	aio_req req;
1976
1977	if (main_sig && !block_sig_level)
1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1979		1718
1980	if (grp->int1 == 2)	1719	if (grp->int1 == 2)
1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1720	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1982		1721
1983	for (i = 1; i < items; ++i )	1722	for (i = 1; i < items; ++i )
1984	{	1723	{
		1724	aio_req req;
		1725
1985	if (GIMME_V != G_VOID)	1726	if (GIMME_V != G_VOID)
1986	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1727	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1987		1728
1988	req = SvAIO_REQ (ST (i));	1729	req = SvAIO_REQ (ST (i));
1989		1730
1990	if (req)	1731	if (req)
1991	{	1732	eio_grp_add (grp, req);
1992	++grp->size;
1993	req->grp = grp;
1994
1995	req->grp_prev = 0;
1996	req->grp_next = grp->grp_first;
1997
1998	if (grp->grp_first)
1999	grp->grp_first->grp_prev = req;
2000
2001	grp->grp_first = req;
2002	}
2003	}	1733	}
2004	}	1734	}
2005		1735
2006	void	1736	void
2007	cancel_subs (aio_req_ornot req)	1737	cancel_subs (aio_req_ornot req)
…		…
2016	AV *av;	1746	AV *av;
2017		1747
2018	grp->errorno = errno;	1748	grp->errorno = errno;
2019		1749
2020	av = newAV ();	1750	av = newAV ();
		1751	av_extend (av, items - 1);
2021		1752
2022	for (i = 1; i < items; ++i )	1753	for (i = 1; i < items; ++i )
2023	av_push (av, newSVsv (ST (i)));	1754	av_push (av, newSVsv (ST (i)));
2024		1755
2025	SvREFCNT_dec (grp->sv1);	1756	SvREFCNT_dec (grp->sv1);
…		…
2032	grp->errorno = errorno;	1763	grp->errorno = errorno;
2033		1764
2034	void	1765	void
2035	limit (aio_req grp, int limit)	1766	limit (aio_req grp, int limit)
2036	CODE:	1767	CODE:
2037	grp->int2 = limit;	1768	eio_grp_limit (grp, limit);
2038	aio_grp_feed (grp);
2039		1769
2040	void	1770	void
2041	feed (aio_req grp, SV *callback=&PL_sv_undef)	1771	feed (aio_req grp, SV *callback=&PL_sv_undef)
2042	CODE:	1772	CODE:
2043	{	1773	{
2044	SvREFCNT_dec (grp->sv2);	1774	SvREFCNT_dec (grp->sv2);
2045	grp->sv2 = newSVsv (callback);	1775	grp->sv2 = newSVsv (callback);
		1776	grp->feed = aio_grp_feed;
2046		1777
2047	if (grp->int2 <= 0)	1778	if (grp->int2 <= 0)
2048	grp->int2 = 2;	1779	grp->int2 = 2;
2049		1780
2050	aio_grp_feed (grp);	1781	eio_grp_limit (grp, grp->int2);
2051	}	1782	}
2052		1783

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