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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.100 by root, Fri Jun 1 06:00:40 2007 UTC vs.
Revision 1.186 by root, Thu Jul 14 22:36:17 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		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
		19
		20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	#ifdef _WIN32
		28
		29	# define EIO_STRUCT_DIRENT Direntry_t
		30	# undef malloc
		31	# undef free
		32
		33	// perl overrides all those nice win32 functions
		34	# undef open
		35	# undef read
		36	# undef write
		37	# undef send
		38	# undef recv
		39	# undef stat
		40	# undef fstat
		41	# define lstat stat
		42	# undef truncate
		43	# undef ftruncate
		44	# undef open
		45	# undef close
		46	# undef unlink
		47	# undef rmdir
		48	# undef rename
		49	# undef lseek
		50
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54
		55	#else
		56
		57	# include <sys/time.h>
		58	# include <sys/select.h>
		59	# include <unistd.h>
23	#include <utime.h>	60	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	61	# include <signal.h>
31	# elif __hpux	62	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	63
33	# elif __solaris /* not yet */	64	#endif
34	# include <sys/sendfile.h>	65
		66	/* perl stupidly overrides readdir and maybe others */
		67	/* with thread-unsafe versions, imagine that :( */
		68	#undef readdir
		69	#undef opendir
		70	#undef closedir
		71
		72	#define EIO_STRUCT_STAT Stat_t
		73
		74	/* use NV for 32 bit perls as it allows larger offsets */
		75	#if IVSIZE >= 8
		76	# define VAL64 IV
		77	# define SvVAL64 SvIV
		78	# define newSVval64 newSViv
		79	#else
		80	# define VAL64 NV
		81	# define SvVAL64 SvNV
		82	# define newSVval64 newSVnv
		83	#endif
		84
		85	/*****************************************************************************/
		86
		87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
		91	#endif
		92
		93	#define expect_false(expr) expect ((expr) != 0, 0)
		94	#define expect_true(expr) expect ((expr) != 0, 1)
		95
		96	/*****************************************************************************/
		97
		98	typedef SV SV8; /* byte-sv, used for argument-checking */
		99	typedef int aio_rfd; /* read file desriptor */
		100	typedef int aio_wfd; /* write file descriptor */
		101
		102	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		103
		104	#define EIO_REQ_MEMBERS \
		105	SV *callback; \
		106	SV *sv1, *sv2; \
		107	STRLEN stroffset; \
		108	SV *self;
		109
		110	#define EIO_NO_WRAPPERS 1
		111
		112	#include "libeio/config.h"
		113	#include "libeio/eio.h"
		114
		115	/* Linux/others */
		116	#ifndef O_ASYNC
		117	# define O_ASYNC 0
		118	#endif
		119	#ifndef O_DIRECT
		120	# define O_DIRECT 0
		121	#endif
		122	#ifndef O_NOATIME
		123	# define O_NOATIME 0
		124	#endif
		125
		126	/* POSIX */
		127	#ifndef O_CLOEXEC
		128	# define O_CLOEXEC 0
		129	#endif
		130	#ifndef O_NOFOLLOW
		131	# define O_NOFOLLOW 0
		132	#endif
		133	#ifndef O_NOCTTY
		134	# define O_NOCTTY 0
		135	#endif
		136	#ifndef O_NONBLOCK
		137	# define O_NONBLOCK 0
		138	#endif
		139	#ifndef O_EXEC
		140	# define O_EXEC 0
		141	#endif
		142	#ifndef O_SEARCH
		143	# define O_SEARCH 0
		144	#endif
		145	#ifndef O_DIRECTORY
		146	# define O_DIRECTORY 0
		147	#endif
		148	#ifndef O_DSYNC
		149	# define O_DSYNC 0
		150	#endif
		151	#ifndef O_RSYNC
		152	# define O_RSYNC 0
		153	#endif
		154	#ifndef O_SYNC
		155	# define O_SYNC 0
		156	#endif
		157	#ifndef O_TTY_INIT
		158	# define O_TTY_INIT 0
		159	#endif
		160
		161	#ifndef POSIX_FADV_NORMAL
		162	# define POSIX_FADV_NORMAL 0
		163	#endif
		164	#ifndef POSIX_FADV_SEQUENTIAL
		165	# define POSIX_FADV_SEQUENTIAL 0
		166	#endif
		167	#ifndef POSIX_FADV_RANDOM
		168	# define POSIX_FADV_RANDOM 0
		169	#endif
		170	#ifndef POSIX_FADV_NOREUSE
		171	# define POSIX_FADV_NOREUSE 0
		172	#endif
		173	#ifndef POSIX_FADV_WILLNEED
		174	# define POSIX_FADV_WILLNEED 0
		175	#endif
		176	#ifndef POSIX_FADV_DONTNEED
		177	# define POSIX_FADV_DONTNEED 0
		178	#endif
		179
		180	#if !HAVE_POSIX_FADVISE
		181	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		182	#endif
		183
		184	#ifndef POSIX_MADV_NORMAL
		185	# define POSIX_MADV_NORMAL 0
		186	#endif
		187	#ifndef POSIX_MADV_SEQUENTIAL
		188	# define POSIX_MADV_SEQUENTIAL 0
		189	#endif
		190	#ifndef POSIX_MADV_RANDOM
		191	# define POSIX_MADV_RANDOM 0
		192	#endif
		193	#ifndef POSIX_MADV_WILLNEED
		194	# define POSIX_MADV_WILLNEED 0
		195	#endif
		196	#ifndef POSIX_MADV_DONTNEED
		197	# define POSIX_MADV_DONTNEED 0
		198	#endif
		199
		200	#if !HAVE_POSIX_MADVISE
		201	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		202	#endif
		203
		204	#ifndef PROT_NONE
		205	# define PROT_NONE 0
		206	#endif
		207	#ifndef PROT_READ
		208	# define PROT_READ 0
		209	#endif
		210	#ifndef PROT_WRITE
		211	# define PROT_READ 0
		212	#endif
		213	#ifndef PROT_EXEC
		214	# define PROT_EXEC 0
		215	#endif
		216
		217	#ifndef ST_NODEV
		218	# define ST_NODEV 0
		219	#endif
		220	#ifndef ST_NOEXEC
		221	# define ST_NOEXEC 0
		222	#endif
		223	#ifndef ST_SYNCHRONOUS
		224	# define ST_SYNCHRONOUS 0
		225	#endif
		226	#ifndef ST_MANDLOCK
		227	# define ST_MANDLOCK 0
		228	#endif
		229	#ifndef ST_WRITE
		230	# define ST_WRITE 0
		231	#endif
		232	#ifndef ST_APPEND
		233	# define ST_APPEND 0
		234	#endif
		235	#ifndef ST_IMMUTABLE
		236	# define ST_IMMUTABLE 0
		237	#endif
		238	#ifndef ST_NOATIME
		239	# define ST_NOATIME 0
		240	#endif
		241	#ifndef ST_NODIRATIME
		242	# define ST_NODIRATIME 0
		243	#endif
		244	#ifndef ST_RELATIME
		245	# define ST_RELATIME 0
		246	#endif
		247
		248	#ifndef S_IFIFO
		249	# define S_IFIFO 0
		250	#endif
		251	#ifndef S_IFCHR
		252	# define S_IFCHR 0
		253	#endif
		254	#ifndef S_IFBLK
		255	# define S_IFBLK 0
		256	#endif
		257	#ifndef S_IFLNK
		258	# define S_IFLNK 0
		259	#endif
		260	#ifndef S_IFREG
		261	# define S_IFREG 0
		262	#endif
		263	#ifndef S_IFDIR
		264	# define S_IFDIR 0
		265	#endif
		266	#ifndef S_IFWHT
		267	# define S_IFWHT 0
		268	#endif
		269	#ifndef S_IFSOCK
		270	# define S_IFSOCK 0
		271	#endif
		272
		273	#ifndef MAP_ANONYMOUS
		274	# ifdef MAP_ANON
		275	# define MAP_ANONYMOUS MAP_ANON
35	# else	276	# else
36	# error sendfile support requested but not available	277	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
37	# endif	278	# endif
38	#endif	279	#endif
39		280	#ifndef MAP_HUGETLB
40	/* number of seconds after which idle threads exit */	281	# define MAP_HUGETLB 0
41	#define IDLE_TIMEOUT 10
42
43	/* used for struct dirent, AIX doesn't provide it */
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif	282	#endif
		283	#ifndef MAP_LOCKED
		284	# define MAP_LOCKED 0
		285	#endif
		286	#ifndef MAP_NORESERVE
		287	# define MAP_NORESERVE 0
		288	#endif
		289	#ifndef MAP_POPULATE
		290	# define MAP_POPULATE 0
		291	#endif
		292	#ifndef MAP_NONBLOCK
		293	# define MAP_NONBLOCK 0
		294	#endif
47		295
48	/* buffer size for various temporary buffers */	296	#ifndef makedev
49	#define AIO_BUFSIZE 65536	297	# define makedev(maj,min) (((maj) << 8) | (min))
		298	#endif
		299	#ifndef major
		300	# define major(dev) ((dev) >> 8)
		301	#endif
		302	#ifndef minor
		303	# define minor(dev) ((dev) & 0xff)
		304	#endif
50		305
51	#define dBUF \	306	#ifndef PAGESIZE
52	char *aio_buf; \	307	# define PAGESIZE sysconf (_SC_PAGESIZE)
53	LOCK (wrklock); \	308	#endif
54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
55	UNLOCK (wrklock); \
56	if (!aio_buf) \
57	return -1;
58		309
59	typedef SV SV8; /* byte-sv, used for argument-checking */	310	static int req_invoke (eio_req *req);
		311	#define EIO_FINISH(req) req_invoke (req)
		312	static void req_destroy (eio_req *grp);
		313	#define EIO_DESTROY(req) req_destroy (req)
60		314
61	enum {	315	enum {
62	REQ_QUIT,	316	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
63	REQ_OPEN, REQ_CLOSE,
64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
65	REQ_SENDFILE,
66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
70	REQ_FSYNC, REQ_FDATASYNC,
71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
72	REQ_MKNOD, REQ_READDIR,
73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
74	REQ_GROUP, REQ_NOP,
75	REQ_BUSY,
76	};	317	};
77		318
78	#define AIO_REQ_KLASS "IO::AIO::REQ"	319	#include "libeio/eio.c"
79	#define AIO_GRP_KLASS "IO::AIO::GRP"
80		320
81	typedef struct aio_cb
82	{
83	struct aio_cb *volatile next;
84
85	SV *callback;
86	SV *sv1, *sv2;
87	void *ptr1, *ptr2;
88	off_t offs;
89	size_t size;
90	ssize_t result;
91	double nv1, nv2;
92
93	STRLEN stroffset;
94	int type;
95	int int1, int2, int3;
96	int errorno;
97	mode_t mode; /* open */
98
99	unsigned char flags;
100	unsigned char pri;
101
102	SV *self; /* the perl counterpart of this request, if any */
103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
104	} aio_cb;
105
106	enum {
107	FLAG_CANCELLED = 0x01, /* request was cancelled */
108	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
110	};
111
112	typedef aio_cb *aio_req;	321	typedef eio_req *aio_req;
113	typedef aio_cb *aio_req_ornot;	322	typedef eio_req *aio_req_ornot;
114		323
115	enum {	324	static SV *on_next_submit;
116	PRI_MIN = -4,	325	static int next_pri = EIO_PRI_DEFAULT;
117	PRI_MAX = 4,	326	static int max_outstanding;
118		327
119	DEFAULT_PRI = 0,	328	static s_epipe respipe;
120	PRI_BIAS = -PRI_MIN,
121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
122	};
123		329
124	#define AIO_TICKS ((1000000 + 1023) >> 10)
125
126	static unsigned int max_poll_time = 0;
127	static unsigned int max_poll_reqs = 0;
128
129	/* calculcate time difference in ~1/AIO_TICKS of a second */
130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
131	{
132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
134	}
135
136	static thread_t main_tid;
137	static int main_sig;
138	static int block_sig_level;
139
140	void block_sig ()
141	{
142	sigset_t ss;
143
144	if (block_sig_level++)
145	return;
146
147	if (!main_sig)
148	return;
149
150	sigemptyset (&ss);
151	sigaddset (&ss, main_sig);
152	pthread_sigmask (SIG_BLOCK, &ss, 0);
153	}
154
155	void unblock_sig ()
156	{
157	sigset_t ss;
158
159	if (--block_sig_level)
160	return;
161
162	if (!main_sig)
163	return;
164
165	sigemptyset (&ss);
166	sigaddset (&ss, main_sig);
167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
168	}
169
170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
171
172	static unsigned int started, idle, wanted;
173
174	/* worker threads management */
175	static mutex_t wrklock = MUTEX_INIT;
176
177	typedef struct worker {
178	/* locked by wrklock */
179	struct worker *prev, *next;
180
181	thread_t tid;
182
183	/* locked by reslock, reqlock or wrklock */
184	aio_req req; /* currently processed request */
185	void *dbuf;
186	DIR *dirp;
187	} worker;
188
189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
190
191	static void worker_clear (worker *wrk)
192	{
193	if (wrk->dirp)
194	{
195	closedir (wrk->dirp);
196	wrk->dirp = 0;
197	}
198
199	if (wrk->dbuf)
200	{
201	free (wrk->dbuf);
202	wrk->dbuf = 0;
203	}
204	}
205
206	static void worker_free (worker *wrk)
207	{
208	wrk->next->prev = wrk->prev;
209	wrk->prev->next = wrk->next;
210
211	free (wrk);
212	}
213
214	static volatile unsigned int nreqs, nready, npending;
215	static volatile unsigned int max_idle = 4;
216	static volatile unsigned int max_outstanding = 0xffffffff;
217	static int respipe [2];
218
219	static mutex_t reslock = MUTEX_INIT;
220	static mutex_t reqlock = MUTEX_INIT;
221	static cond_t reqwait = COND_INIT;
222
223	#if WORDACCESS_UNSAFE
224
225	static unsigned int get_nready ()
226	{
227	unsigned int retval;
228
229	LOCK (reqlock);
230	retval = nready;
231	UNLOCK (reqlock);
232
233	return retval;
234	}
235
236	static unsigned int get_npending ()
237	{
238	unsigned int retval;
239
240	LOCK (reslock);
241	retval = npending;
242	UNLOCK (reslock);
243
244	return retval;
245	}
246
247	static unsigned int get_nthreads ()
248	{
249	unsigned int retval;
250
251	LOCK (wrklock);
252	retval = started;
253	UNLOCK (wrklock);
254
255	return retval;
256	}
257
258	#else
259
260	# define get_nready() nready
261	# define get_npending() npending
262	# define get_nthreads() started
263
264	#endif
265
266	/*
267	* a somewhat faster data structure might be nice, but
268	* with 8 priorities this actually needs <20 insns
269	* per shift, the most expensive operation.
270	*/
271	typedef struct {
272	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
273	int size;
274	} reqq;
275
276	static reqq req_queue;
277	static reqq res_queue;
278
279	int reqq_push (reqq *q, aio_req req)
280	{
281	int pri = req->pri;
282	req->next = 0;
283
284	if (q->qe[pri])
285	{
286	q->qe[pri]->next = req;
287	q->qe[pri] = req;
288	}
289	else
290	q->qe[pri] = q->qs[pri] = req;
291
292	return q->size++;
293	}
294
295	aio_req reqq_shift (reqq *q)
296	{
297	int pri;
298
299	if (!q->size)
300	return 0;
301
302	--q->size;
303
304	for (pri = NUM_PRI; pri--; )
305	{
306	aio_req req = q->qs[pri];
307
308	if (req)
309	{
310	if (!(q->qs[pri] = req->next))
311	q->qe[pri] = 0;
312
313	return req;
314	}
315	}
316
317	abort ();
318	}
319
320	static int poll_cb ();
321	static int req_invoke (aio_req req);
322	static void req_free (aio_req req);	330	static void req_destroy (aio_req req);
323	static void req_cancel (aio_req req);	331	static void req_cancel (aio_req req);
324		332
		333	static void want_poll (void)
		334	{
		335	/* write a dummy byte to the pipe so fh becomes ready */
		336	s_epipe_signal (&respipe);
		337	}
		338
		339	static void done_poll (void)
		340	{
		341	/* read any signals sent by the worker threads */
		342	s_epipe_drain (&respipe);
		343	}
		344
325	/* must be called at most once */	345	/* must be called at most once */
326	static SV *req_sv (aio_req req, const char *klass)	346	static SV *req_sv (aio_req req, HV *stash)
327	{	347	{
328	if (!req->self)	348	if (!req->self)
329	{	349	{
330	req->self = (SV *)newHV ();	350	req->self = (SV *)newHV ();
331	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	351	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
332	}	352	}
333		353
334	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	354	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
335	}	355	}
336		356
337	static aio_req SvAIO_REQ (SV *sv)	357	static aio_req SvAIO_REQ (SV *sv)
338	{	358	{
339	MAGIC *mg;	359	MAGIC *mg;
340		360
341	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	361	if (!SvROK (sv)
		362	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		363	&& SvSTASH (SvRV (sv)) != aio_req_stash
		364	&& !sv_derived_from (sv, "IO::AIO::REQ")))
342	croak ("object of class " AIO_REQ_KLASS " expected");	365	croak ("object of class IO::AIO::REQ expected");
343		366
344	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	367	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
345		368
346	return mg ? (aio_req)mg->mg_ptr : 0;	369	return mg ? (aio_req)mg->mg_ptr : 0;
347	}	370	}
348		371
349	static void aio_grp_feed (aio_req grp)	372	static void aio_grp_feed (aio_req grp)
350	{	373	{
351	block_sig ();	374	if (grp->sv2 && SvOK (grp->sv2))
352
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	375	{
355	int old_len = grp->size;
356
357	if (grp->sv2 && SvOK (grp->sv2))
358	{
359	dSP;	376	dSP;
360		377
361	ENTER;	378	ENTER;
362	SAVETMPS;	379	SAVETMPS;
363	PUSHMARK (SP);	380	PUSHMARK (SP);
364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	381	XPUSHs (req_sv (grp, aio_grp_stash));
365	PUTBACK;	382	PUTBACK;
366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
367	SPAGAIN;	384	SPAGAIN;
368	FREETMPS;	385	FREETMPS;
369	LEAVE;	386	LEAVE;
370	}
371
372	/* stop if no progress has been made */
373	if (old_len == grp->size)
374	{
375	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;
377	break;
378	}
379	}	387	}
380
381	unblock_sig ();
382	}	388	}
383		389
384	static void aio_grp_dec (aio_req grp)	390	static void req_submit (eio_req *req)
385	{	391	{
386	--grp->size;	392	eio_submit (req);
387		393
388	/* call feeder, if applicable */	394	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	395	{
394	block_sig ();	396	dSP;
		397	SV *cb = sv_2mortal (on_next_submit);
395		398
396	if (!req_invoke (grp))	399	on_next_submit = 0;
397	{
398	req_free (grp);
399	unblock_sig ();
400	croak (0);
401	}
402		400
403	req_free (grp);	401	PUSHMARK (SP);
404	unblock_sig ();	402	PUTBACK;
		403	call_sv (cb, G_DISCARD | G_EVAL);
405	}	404	}
406	}	405	}
407		406
408	static int req_invoke (aio_req req)	407	static int req_invoke (eio_req *req)
409	{	408	{
410	dSP;
411
412	if (req->flags & FLAG_SV2_RO_OFF)	409	if (req->flags & FLAG_SV2_RO_OFF)
413	SvREADONLY_off (req->sv2);	410	SvREADONLY_off (req->sv2);
414		411
415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	412	if (!EIO_CANCELLED (req) && req->callback)
416	{	413	{
		414	dSP;
		415	static SV *sv_result_cache; /* caches the result integer SV */
		416	SV *sv_result;
		417
417	ENTER;	418	ENTER;
418	SAVETMPS;	419	SAVETMPS;
419	PUSHMARK (SP);	420	PUSHMARK (SP);
420	EXTEND (SP, 1);	421	EXTEND (SP, 1);
421		422
		423	/* do not recreate the result IV from scratch each time */
		424	if (expect_true (sv_result_cache))
		425	{
		426	sv_result = sv_result_cache; sv_result_cache = 0;
		427	SvIV_set (sv_result, req->result);
		428	SvIOK_only (sv_result);
		429	}
		430	else
		431	{
		432	sv_result = newSViv (req->result);
		433	SvREADONLY_on (sv_result);
		434	}
		435
422	switch (req->type)	436	switch (req->type)
423	{	437	{
424	case REQ_READDIR:	438	case EIO_READDIR:
425	{	439	{
426	SV *rv = &PL_sv_undef;	440	SV *rv = &PL_sv_undef;
427		441
428	if (req->result >= 0)	442	if (req->result >= 0)
429	{	443	{
430	int i;	444	int i;
431	char *buf = req->ptr2;	445	char *names = (char *)req->ptr2;
		446	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
432	AV *av = newAV ();	447	AV *av = newAV ();
433		448
434	av_extend (av, req->result - 1);	449	av_extend (av, req->result - 1);
435		450
436	for (i = 0; i < req->result; ++i)	451	for (i = 0; i < req->result; ++i)
437	{	452	{
438	SV *sv = newSVpv (buf, 0);	453	if (req->int1 & EIO_READDIR_DENTS)
		454	{
		455	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
439		456
		457	if (req->int1 & EIO_READDIR_CUSTOM2)
		458	{
		459	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		460	AV *avent = newAV ();
		461
		462	av_extend (avent, 2);
		463
		464	if (!sv_type [ent->type])
		465	{
		466	sv_type [ent->type] = newSViv (ent->type);
		467	SvREADONLY_on (sv_type [ent->type]);
		468	}
		469
		470	av_store (avent, 0, namesv);
		471	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		472	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		473
		474	av_store (av, i, newRV_noinc ((SV *)avent));
		475	}
		476	else
440	av_store (av, i, sv);	477	av_store (av, i, namesv);
		478
		479	++ent;
		480	}
		481	else
		482	{
		483	SV *name = newSVpv (names, 0);
		484	av_store (av, i, name);
441	buf += SvCUR (sv) + 1;	485	names += SvCUR (name) + 1;
		486	}
442	}	487	}
443		488
444	rv = sv_2mortal (newRV_noinc ((SV *)av));	489	rv = sv_2mortal (newRV_noinc ((SV *)av));
445	}	490	}
446		491
447	PUSHs (rv);	492	PUSHs (rv);
		493
		494	if (req->int1 & EIO_READDIR_CUSTOM1)
		495	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
448	}	496	}
449	break;	497	break;
450		498
451	case REQ_OPEN:	499	case EIO_OPEN:
452	{	500	{
453	/* convert fd to fh */	501	/* convert fd to fh */
454	SV *fh;	502	SV *fh = &PL_sv_undef;
455		503
456	PUSHs (sv_2mortal (newSViv (req->result)));	504	if (req->result >= 0)
457	PUTBACK;	505	{
458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	506	GV *gv = (GV *)sv_newmortal ();
459	SPAGAIN;	507	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		508	char sym [64];
		509	int symlen;
		510
		511	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		512	gv_init (gv, aio_stash, sym, symlen, 0);
460		513
461	fh = POPs;	514	symlen = snprintf (
462	PUSHMARK (SP);	515	sym,
		516	sizeof (sym),
		517	"%s&=%d",
		518	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		519	(int)req->result
		520	);
		521
		522	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		523	fh = (SV *)gv;
		524	}
		525
463	XPUSHs (fh);	526	PUSHs (fh);
464	}	527	}
465	break;	528	break;
466		529
		530	case EIO_STATVFS:
		531	case EIO_FSTATVFS:
		532	{
		533	SV *rv = &PL_sv_undef;
		534
		535	if (req->result >= 0)
		536	{
		537	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		538	HV *hv = newHV ();
		539
		540	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		541
		542	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		543	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		544	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		545	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		546	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		547	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		548	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		549	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		550	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		551	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		552	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		553	}
		554
		555	PUSHs (rv);
		556	}
		557
		558	break;
		559
467	case REQ_GROUP:	560	case EIO_GROUP:
468	req->int1 = 2; /* mark group as finished */	561	req->int1 = 2; /* mark group as finished */
469		562
470	if (req->sv1)	563	if (req->sv1)
471	{	564	{
472	int i;	565	int i;
…		…
476	for (i = 0; i <= AvFILL (av); ++i)	569	for (i = 0; i <= AvFILL (av); ++i)
477	PUSHs (*av_fetch (av, i, 0));	570	PUSHs (*av_fetch (av, i, 0));
478	}	571	}
479	break;	572	break;
480		573
481	case REQ_NOP:	574	case EIO_NOP:
482	case REQ_BUSY:	575	case EIO_BUSY:
483	break;	576	break;
484		577
485	case REQ_READLINK:	578	case EIO_READLINK:
		579	case EIO_REALPATH:
486	if (req->result > 0)	580	if (req->result > 0)
487	{	581	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
488	SvCUR_set (req->sv2, req->result);
489	*SvEND (req->sv2) = 0;
490	PUSHs (req->sv2);
491	}
492	break;	582	break;
493		583
494	case REQ_STAT:	584	case EIO_STAT:
495	case REQ_LSTAT:	585	case EIO_LSTAT:
496	case REQ_FSTAT:	586	case EIO_FSTAT:
497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	587	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
498	PL_laststatval = req->result;	588	PL_laststatval = req->result;
499	PL_statcache = *(Stat_t *)(req->ptr2);	589	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
500	PUSHs (sv_2mortal (newSViv (req->result)));	590	PUSHs (sv_result);
501	break;	591	break;
502		592
503	case REQ_READ:	593	case EIO_READ:
		594	{
504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	595	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
505	*SvEND (req->sv2) = 0;	596	*SvEND (req->sv2) = 0;
506	PUSHs (sv_2mortal (newSViv (req->result)));	597	SvPOK_only (req->sv2);
		598	SvSETMAGIC (req->sv2);
		599	PUSHs (sv_result);
		600	}
507	break;	601	break;
508		602
		603	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		604	if (req->result > 0)
		605	SvIV_set (sv_result, 0);
		606	/* FALLTHROUGH */
		607
509	default:	608	default:
510	PUSHs (sv_2mortal (newSViv (req->result)));	609	PUSHs (sv_result);
511	break;	610	break;
512	}	611	}
513		612
514	errno = req->errorno;	613	errno = req->errorno;
515		614
516	PUTBACK;	615	PUTBACK;
517	call_sv (req->callback, G_VOID | G_EVAL);	616	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
518	SPAGAIN;	617	SPAGAIN;
		618
		619	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		620	SvREFCNT_dec (sv_result);
		621	else
		622	sv_result_cache = sv_result;
519		623
520	FREETMPS;	624	FREETMPS;
521	LEAVE;	625	LEAVE;
		626
		627	PUTBACK;
522	}	628	}
523		629
524	if (req->grp)
525	{
526	aio_req grp = req->grp;
527
528	/* unlink request */
529	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
530	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
531
532	if (grp->grp_first == req)
533	grp->grp_first = req->grp_next;
534
535	aio_grp_dec (grp);
536	}
537
538	return !SvTRUE (ERRSV);	630	return !!SvTRUE (ERRSV);
539	}	631	}
540		632
541	static void req_free (aio_req req)	633	static void req_destroy (aio_req req)
542	{	634	{
543	if (req->self)	635	if (req->self)
544	{	636	{
545	sv_unmagic (req->self, PERL_MAGIC_ext);	637	sv_unmagic (req->self, PERL_MAGIC_ext);
546	SvREFCNT_dec (req->self);	638	SvREFCNT_dec (req->self);
…		…
548		640
549	SvREFCNT_dec (req->sv1);	641	SvREFCNT_dec (req->sv1);
550	SvREFCNT_dec (req->sv2);	642	SvREFCNT_dec (req->sv2);
551	SvREFCNT_dec (req->callback);	643	SvREFCNT_dec (req->callback);
552		644
553	if (req->flags & FLAG_PTR2_FREE)
554	free (req->ptr2);
555
556	Safefree (req);	645	Safefree (req);
557	}	646	}
558		647
559	static void req_cancel_subs (aio_req grp)	648	static void req_cancel_subs (aio_req grp)
560	{	649	{
561	aio_req sub;	650	aio_req sub;
562		651
563	if (grp->type != REQ_GROUP)	652	if (grp->type != EIO_GROUP)
564	return;	653	return;
565		654
566	SvREFCNT_dec (grp->sv2);	655	SvREFCNT_dec (grp->sv2);
567	grp->sv2 = 0;	656	grp->sv2 = 0;
568		657
569	for (sub = grp->grp_first; sub; sub = sub->grp_next)	658	eio_grp_cancel (grp);
570	req_cancel (sub);
571	}	659	}
572		660
573	static void req_cancel (aio_req req)	661	static void create_respipe (void)
574	{	662	{
575	req->flags |= FLAG_CANCELLED;	663	if (s_epipe_renew (&respipe))
576		664	croak ("IO::AIO: unable to initialize result pipe");
577	req_cancel_subs (req);
578	}	665	}
579		666
580	static void *aio_proc(void *arg);
581
582	static void start_thread (void)
583	{
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	LOCK (wrklock);
590
591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
592	{
593	wrk->prev = &wrk_first;
594	wrk->next = wrk_first.next;
595	wrk_first.next->prev = wrk;
596	wrk_first.next = wrk;
597	++started;
598	}
599	else
600	free (wrk);
601
602	UNLOCK (wrklock);
603	}
604
605	static void maybe_start_thread ()
606	{
607	if (get_nthreads () >= wanted)
608	return;
609
610	/* todo: maybe use idle here, but might be less exact */
611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
612	return;
613
614	start_thread ();
615	}
616
617	static void req_send (aio_req req)
618	{
619	block_sig ();
620
621	++nreqs;
622
623	LOCK (reqlock);
624	++nready;
625	reqq_push (&req_queue, req);
626	COND_SIGNAL (reqwait);
627	UNLOCK (reqlock);
628
629	unblock_sig ();
630
631	maybe_start_thread ();
632	}
633
634	static void end_thread (void)
635	{
636	aio_req req;
637
638	Newz (0, req, 1, aio_cb);
639
640	req->type = REQ_QUIT;
641	req->pri = PRI_MAX + PRI_BIAS;
642
643	LOCK (reqlock);
644	reqq_push (&req_queue, req);
645	COND_SIGNAL (reqwait);
646	UNLOCK (reqlock);
647
648	LOCK (wrklock);
649	--started;
650	UNLOCK (wrklock);
651	}
652
653	static void set_max_idle (int nthreads)
654	{
655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
656	max_idle = nthreads <= 0 ? 1 : nthreads;
657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
658	}
659
660	static void min_parallel (int nthreads)
661	{
662	if (wanted < nthreads)
663	wanted = nthreads;
664	}
665
666	static void max_parallel (int nthreads)
667	{
668	if (wanted > nthreads)
669	wanted = nthreads;
670
671	while (started > wanted)
672	end_thread ();
673	}
674
675	static void poll_wait ()	667	static void poll_wait (void)
676	{	668	{
677	fd_set rfd;
678
679	while (nreqs)	669	while (eio_nreqs ())
680	{	670	{
681	int size;	671	int size;
682	if (WORDACCESS_UNSAFE) LOCK (reslock);	672
		673	X_LOCK (reslock);
683	size = res_queue.size;	674	size = res_queue.size;
684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	675	X_UNLOCK (reslock);
685		676
686	if (size)	677	if (size)
687	return;	678	return;
688		679
689	maybe_start_thread ();	680	etp_maybe_start_thread ();
690		681
691	FD_ZERO(&rfd);	682	s_epipe_wait (&respipe);
692	FD_SET(respipe [0], &rfd);
693
694	select (respipe [0] + 1, &rfd, 0, 0, 0);
695	}	683	}
696	}	684	}
697		685
698	static int poll_cb ()	686	static int poll_cb (void)
699	{	687	{
700	dSP;
701	int count = 0;
702	int maxreqs = max_poll_reqs;
703	int do_croak = 0;
704	struct timeval tv_start, tv_now;
705	aio_req req;
706
707	if (max_poll_time)
708	gettimeofday (&tv_start, 0);
709
710	block_sig ();
711
712	for (;;)	688	for (;;)
713	{	689	{
714	for (;;)	690	int res = eio_poll ();
715	{
716	maybe_start_thread ();
717		691
718	LOCK (reslock);	692	if (res > 0)
719	req = reqq_shift (&res_queue);
720
721	if (req)
722	{
723	--npending;
724
725	if (!res_queue.size)
726	{
727	/* read any signals sent by the worker threads */
728	char buf [4];
729	while (read (respipe [0], buf, 4) == 4)
730	;
731	}
732	}
733
734	UNLOCK (reslock);
735
736	if (!req)
737	break;
738
739	--nreqs;
740
741	if (req->type == REQ_GROUP && req->size)
742	{
743	req->int1 = 1; /* mark request as delayed */
744	continue;
745	}
746	else
747	{
748	if (!req_invoke (req))
749	{
750	req_free (req);
751	unblock_sig ();
752	croak (0);	693	croak (0);
753	}
754		694
755	count++;	695	if (!max_outstanding || max_outstanding > eio_nreqs ())
756	}	696	return res;
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;
774		697
775	poll_wait ();	698	poll_wait ();
776
777	++maxreqs;
778	}	699	}
779
780	unblock_sig ();
781	return count;
782	}	700	}
783		701
784	static void create_pipe ()	702	static void atfork_child (void)
785	{	703	{
786	if (pipe (respipe))	704	create_respipe ();
787	croak ("unable to initialize result pipe");
788
789	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
790	croak ("cannot set result pipe to nonblocking mode");
791
792	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
793	croak ("cannot set result pipe to nonblocking mode");
794	}	705	}
795		706
796	/*****************************************************************************/	707	/*****************************************************************************/
797	/* work around various missing functions */
798		708
799	#if !HAVE_PREADWRITE	709	#if !_POSIX_MAPPED_FILES
800	# define pread aio_pread	710	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
801	# define pwrite aio_pwrite	711	# define munmap(addr,length) (errno = ENOSYS, -1)
802
803	/*
804	* make our pread/pwrite safe against themselves, but not against
805	* normal read/write by using a mutex. slows down execution a lot,
806	* but that's your problem, not mine.
807	*/
808	static mutex_t preadwritelock = MUTEX_INIT;
809
810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
811	{
812	ssize_t res;
813	off_t ooffset;
814
815	LOCK (preadwritelock);
816	ooffset = lseek (fd, 0, SEEK_CUR);
817	lseek (fd, offset, SEEK_SET);
818	res = read (fd, buf, count);
819	lseek (fd, ooffset, SEEK_SET);
820	UNLOCK (preadwritelock);
821
822	return res;
823	}
824
825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
826	{
827	ssize_t res;
828	off_t ooffset;
829
830	LOCK (preadwritelock);
831	ooffset = lseek (fd, 0, SEEK_CUR);
832	lseek (fd, offset, SEEK_SET);
833	res = write (fd, buf, count);
834	lseek (fd, offset, SEEK_SET);
835	UNLOCK (preadwritelock);
836
837	return res;
838	}
839	#endif
840
841	#ifndef HAVE_FUTIMES
842
843	# define utimes(path,times) aio_utimes (path, times)
844	# define futimes(fd,times) aio_futimes (fd, times)
845
846	int aio_utimes (const char *filename, const struct timeval times[2])
847	{
848	if (times)
849	{
850	struct utimbuf buf;
851
852	buf.actime = times[0].tv_sec;
853	buf.modtime = times[1].tv_sec;
854
855	return utime (filename, &buf);
856	}
857	else
858	return utime (filename, 0);
859	}
860
861	int aio_futimes (int fd, const struct timeval tv[2])
862	{
863	errno = ENOSYS;
864	return -1;
865	}
866
867	#endif
868
869	#if !HAVE_FDATASYNC
870	# define fdatasync fsync
871	#endif
872
873	#if !HAVE_READAHEAD
874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
875
876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
877	{
878	dBUF;
879
880	while (count > 0)
881	{
882	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
883
884	pread (fd, aio_buf, len, offset);
885	offset += len;
886	count -= len;
887	}
888
889	errno = 0;
890	}
891
892	#endif
893
894	#if !HAVE_READDIR_R
895	# define readdir_r aio_readdir_r
896
897	static mutex_t readdirlock = MUTEX_INIT;
898
899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
900	{
901	struct dirent *e;
902	int errorno;
903
904	LOCK (readdirlock);
905
906	e = readdir (dirp);
907	errorno = errno;
908
909	if (e)
910	{
911	*res = ent;
912	strcpy (ent->d_name, e->d_name);
913	}
914	else
915	*res = 0;
916
917	UNLOCK (readdirlock);
918
919	errno = errorno;
920	return e ? 0 : -1;
921	}
922	#endif
923
924	/* sendfile always needs emulation */
925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
926	{
927	ssize_t res;
928
929	if (!count)
930	return 0;
931
932	#if HAVE_SENDFILE
933	# if __linux
934	res = sendfile (ofd, ifd, &offset, count);
935
936	# elif __freebsd
937	/*
938	* Of course, the freebsd sendfile is a dire hack with no thoughts
939	* wasted on making it similar to other I/O functions.
940	*/
941	{
942	off_t sbytes;
943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
944
945	if (res < 0 && sbytes)
946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
947	res = sbytes;
948	}
949
950	# elif __hpux
951	res = sendfile (ofd, ifd, offset, count, 0, 0);
952
953	# elif __solaris
954	{
955	struct sendfilevec vec;
956	size_t sbytes;
957
958	vec.sfv_fd = ifd;
959	vec.sfv_flag = 0;
960	vec.sfv_off = offset;
961	vec.sfv_len = count;
962
963	res = sendfilev (ofd, &vec, 1, &sbytes);
964
965	if (res < 0 && sbytes)
966	res = sbytes;
967	}
968
969	# endif	712	#endif
970	#else
971	res = -1;
972	errno = ENOSYS;
973	#endif
974		713
975	if (res < 0	714	#if !_POSIX_MEMORY_PROTECTION
976	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	715	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
977	#if __solaris	716	# define PROT_NONE 0
978	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	717	# define PROT_WRITE 0
		718	# define MAP_PRIVATE 0
		719	# define MAP_SHARED 0
		720	# define MAP_FIXED 0
979	#endif	721	#endif
980	)
981	)
982	{
983	/* emulate sendfile. this is a major pain in the ass */
984	dBUF;
985		722
986	res = 0;	723	#define MMAP_MAGIC PERL_MAGIC_ext
987		724
988	while (count)	725	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
989	{	726	{
990	ssize_t cnt;	727	int old_errno = errno;
991		728	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
992	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	729	errno = old_errno;
993		730
994	if (cnt <= 0)	731	mg->mg_obj = 0; /* just in case */
995	{
996	if (cnt && !res) res = -1;
997	break;
998	}
999		732
1000	cnt = write (ofd, aio_buf, cnt);	733	SvREADONLY_off (sv);
1001		734
1002	if (cnt <= 0)	735	if (SvPVX (sv) != mg->mg_ptr)
1003	{	736	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1004	if (cnt && !res) res = -1;
1005	break;
1006	}
1007		737
1008	offset += cnt;	738	SvCUR_set (sv, 0);
1009	res += cnt;	739	SvPVX (sv) = 0;
1010	count -= cnt;	740	SvOK_off (sv);
1011	}
1012	}
1013		741
1014	return res;	742	return 0;
1015	}	743	}
1016		744
1017	/* read a full directory */	745	static MGVTBL mmap_vtbl = {
1018	static void scandir_ (aio_req req, worker *self)	746	0, 0, 0, 0, mmap_free
1019	{	747	};
1020	DIR *dirp;
1021	union
1022	{
1023	struct dirent d;
1024	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1025	} *u;
1026	struct dirent *entp;
1027	char *name, *names;
1028	int memlen = 4096;
1029	int memofs = 0;
1030	int res = 0;
1031	int errorno;
1032
1033	LOCK (wrklock);
1034	self->dirp = dirp = opendir (req->ptr1);
1035	self->dbuf = u = malloc (sizeof (*u));
1036	req->flags |= FLAG_PTR2_FREE;
1037	req->ptr2 = names = malloc (memlen);
1038	UNLOCK (wrklock);
1039
1040	if (dirp && u && names)
1041	for (;;)
1042	{
1043	errno = 0;
1044	readdir_r (dirp, &u->d, &entp);
1045
1046	if (!entp)
1047	break;
1048
1049	name = entp->d_name;
1050
1051	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1052	{
1053	int len = strlen (name) + 1;
1054
1055	res++;
1056
1057	while (memofs + len > memlen)
1058	{
1059	memlen *= 2;
1060	LOCK (wrklock);
1061	req->ptr2 = names = realloc (names, memlen);
1062	UNLOCK (wrklock);
1063
1064	if (!names)
1065	break;
1066	}
1067
1068	memcpy (names + memofs, name, len);
1069	memofs += len;
1070	}
1071	}
1072
1073	if (errno)
1074	res = -1;
1075
1076	req->result = res;
1077	}
1078		748
1079	/*****************************************************************************/	749	/*****************************************************************************/
1080		750
1081	static void *aio_proc (void *thr_arg)	751	static SV * get_cb (SV *cb_sv)
1082	{	752	{
1083	aio_req req;	753	SvGETMAGIC (cb_sv);
1084	struct timespec ts;	754	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1085	worker *self = (worker *)thr_arg;
1086
1087	/* try to distribute timeouts somewhat evenly */
1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1089	* (1000000000UL / 1024UL);
1090
1091	for (;;)
1092	{
1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1094
1095	LOCK (reqlock);
1096
1097	for (;;)
1098	{
1099	self->req = req = reqq_shift (&req_queue);
1100
1101	if (req)
1102	break;
1103
1104	++idle;
1105
1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1107	== ETIMEDOUT)
1108	{
1109	if (idle > max_idle)
1110	{
1111	--idle;
1112	UNLOCK (reqlock);
1113	LOCK (wrklock);
1114	--started;
1115	UNLOCK (wrklock);
1116	goto quit;
1117	}
1118
1119	/* we are allowed to idle, so do so without any timeout */
1120	COND_WAIT (reqwait, reqlock);
1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1122	}
1123
1124	--idle;
1125	}
1126
1127	--nready;
1128
1129	UNLOCK (reqlock);
1130
1131	errno = 0; /* strictly unnecessary */
1132
1133	if (!(req->flags & FLAG_CANCELLED))
1134	switch (req->type)
1135	{
1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1138
1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1141
1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1145
1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1150
1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1152	case REQ_CLOSE: req->result = close (req->int1); break;
1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1161
1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
1164	case REQ_READDIR: scandir_ (req, self); break;
1165
1166	case REQ_BUSY:
1167	{
1168	struct timeval tv;
1169
1170	tv.tv_sec = req->nv1;
1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1172
1173	req->result = select (0, 0, 0, 0, &tv);
1174	}
1175
1176	case REQ_UTIME:
1177	case REQ_FUTIME:
1178	{
1179	struct timeval tv[2];
1180	struct timeval *times;
1181
1182	if (req->nv1 != -1. || req->nv2 != -1.)
1183	{
1184	tv[0].tv_sec = req->nv1;
1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1186	tv[1].tv_sec = req->nv2;
1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1188
1189	times = tv;
1190	}
1191	else
1192	times = 0;
1193
1194
1195	req->result = req->type == REQ_FUTIME
1196	? futimes (req->int1, times)
1197	: utimes (req->ptr1, times);
1198	}
1199
1200	case REQ_GROUP:
1201	case REQ_NOP:
1202	break;
1203
1204	case REQ_QUIT:
1205	goto quit;
1206
1207	default:
1208	req->result = -1;
1209	break;
1210	}
1211
1212	req->errorno = errno;
1213
1214	LOCK (reslock);
1215
1216	++npending;
1217
1218	if (!reqq_push (&res_queue, req))
1219	{
1220	/* write a dummy byte to the pipe so fh becomes ready */
1221	write (respipe [1], &respipe, 1);
1222
1223	/* optionally signal the main thread asynchronously */
1224	if (main_sig)
1225	pthread_kill (main_tid, main_sig);
1226	}
1227
1228	self->req = 0;
1229	worker_clear (self);
1230
1231	UNLOCK (reslock);
1232	}
1233
1234	quit:
1235	LOCK (wrklock);
1236	worker_free (self);
1237	UNLOCK (wrklock);
1238
1239	return 0;
1240	}
1241
1242	/*****************************************************************************/
1243
1244	static void atfork_prepare (void)
1245	{
1246	LOCK (wrklock);
1247	LOCK (reqlock);
1248	LOCK (reslock);
1249	#if !HAVE_PREADWRITE
1250	LOCK (preadwritelock);
1251	#endif
1252	#if !HAVE_READDIR_R
1253	LOCK (readdirlock);
1254	#endif
1255	}
1256
1257	static void atfork_parent (void)
1258	{
1259	#if !HAVE_READDIR_R
1260	UNLOCK (readdirlock);
1261	#endif
1262	#if !HAVE_PREADWRITE
1263	UNLOCK (preadwritelock);
1264	#endif
1265	UNLOCK (reslock);
1266	UNLOCK (reqlock);
1267	UNLOCK (wrklock);
1268	}
1269
1270	static void atfork_child (void)
1271	{
1272	aio_req prv;
1273
1274	while (prv = reqq_shift (&req_queue))
1275	req_free (prv);
1276
1277	while (prv = reqq_shift (&res_queue))
1278	req_free (prv);
1279
1280	while (wrk_first.next != &wrk_first)
1281	{
1282	worker *wrk = wrk_first.next;
1283
1284	if (wrk->req)
1285	req_free (wrk->req);
1286
1287	worker_clear (wrk);
1288	worker_free (wrk);
1289	}
1290
1291	started = 0;
1292	idle = 0;
1293	nreqs = 0;
1294	nready = 0;
1295	npending = 0;
1296
1297	close (respipe [0]);
1298	close (respipe [1]);
1299	create_pipe ();
1300
1301	atfork_parent ();
1302	}	755	}
1303		756
1304	#define dREQ \	757	#define dREQ \
		758	SV *cb_cv; \
1305	aio_req req; \	759	aio_req req; \
1306	int req_pri = next_pri; \	760	int req_pri = next_pri; \
1307	next_pri = DEFAULT_PRI + PRI_BIAS; \	761	next_pri = EIO_PRI_DEFAULT; \
1308	\	762	\
1309	if (SvOK (callback) && !SvROK (callback)) \	763	cb_cv = get_cb (callback); \
1310	croak ("callback must be undef or of reference type"); \
1311	\	764	\
1312	Newz (0, req, 1, aio_cb); \	765	Newz (0, req, 1, eio_req); \
1313	if (!req) \	766	if (!req) \
1314	croak ("out of memory during aio_req allocation"); \	767	croak ("out of memory during eio_req allocation"); \
1315	\	768	\
1316	req->callback = newSVsv (callback); \	769	req->callback = SvREFCNT_inc (cb_cv); \
1317	req->pri = req_pri	770	req->pri = req_pri
1318		771
1319	#define REQ_SEND \	772	#define REQ_SEND \
		773	PUTBACK; \
1320	req_send (req); \	774	req_submit (req); \
		775	SPAGAIN; \
1321	\	776	\
1322	if (GIMME_V != G_VOID) \	777	if (GIMME_V != G_VOID) \
1323	XPUSHs (req_sv (req, AIO_REQ_KLASS));	778	XPUSHs (req_sv (req, aio_req_stash));
1324		779
1325	MODULE = IO::AIO PACKAGE = IO::AIO	780	MODULE = IO::AIO PACKAGE = IO::AIO
1326		781
1327	PROTOTYPES: ENABLE	782	PROTOTYPES: ENABLE
1328		783
1329	BOOT:	784	BOOT:
1330	{	785	{
		786	static const struct {
		787	const char *name;
		788	IV iv;
		789	} *civ, const_iv[] = {
		790	# define const_niv(name, value) { # name, (IV) value },
		791	# define const_iv(name) { # name, (IV) name },
		792	# define const_eio(name) { # name, (IV) EIO_ ## name },
		793	const_iv (EXDEV)
		794	const_iv (ENOSYS)
		795	const_iv (O_RDONLY)
		796	const_iv (O_WRONLY)
		797	const_iv (O_RDWR)
		798	const_iv (O_CREAT)
		799	const_iv (O_TRUNC)
		800	const_iv (O_EXCL)
		801	const_iv (O_APPEND)
		802
		803	const_iv (O_ASYNC)
		804	const_iv (O_DIRECT)
		805	const_iv (O_NOATIME)
		806
		807	const_iv (O_CLOEXEC)
		808	const_iv (O_NOCTTY)
		809	const_iv (O_NOFOLLOW)
		810	const_iv (O_NONBLOCK)
		811	const_iv (O_EXEC)
		812	const_iv (O_SEARCH)
		813	const_iv (O_DIRECTORY)
		814	const_iv (O_DSYNC)
		815	const_iv (O_RSYNC)
		816	const_iv (O_SYNC)
		817	const_iv (O_TTY_INIT)
		818
		819	const_iv (S_IFIFO)
		820	const_iv (S_IFCHR)
		821	const_iv (S_IFBLK)
		822	const_iv (S_IFLNK)
		823	const_iv (S_IFREG)
		824	const_iv (S_IFDIR)
		825	const_iv (S_IFWHT)
		826	const_iv (S_IFSOCK)
		827	const_iv (S_IFMT)
		828
		829	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		830	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		831	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		832	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		833	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		834	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		835
		836	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		837	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		838	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		839	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		840	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		841
		842	const_iv (ST_RDONLY)
		843	const_iv (ST_NOSUID)
		844	const_iv (ST_NODEV)
		845	const_iv (ST_NOEXEC)
		846	const_iv (ST_SYNCHRONOUS)
		847	const_iv (ST_MANDLOCK)
		848	const_iv (ST_WRITE)
		849	const_iv (ST_APPEND)
		850	const_iv (ST_IMMUTABLE)
		851	const_iv (ST_NOATIME)
		852	const_iv (ST_NODIRATIME)
		853	const_iv (ST_RELATIME)
		854
		855	const_iv (PROT_NONE)
		856	const_iv (PROT_EXEC)
		857	const_iv (PROT_READ)
		858	const_iv (PROT_WRITE)
		859
		860	/*const_iv (MAP_FIXED)*/
		861	const_iv (MAP_PRIVATE)
		862	const_iv (MAP_SHARED)
		863	const_iv (MAP_ANONYMOUS)
		864
		865	/* linuxish */
		866	const_iv (MAP_HUGETLB)
		867	const_iv (MAP_LOCKED)
		868	const_iv (MAP_NORESERVE)
		869	const_iv (MAP_POPULATE)
		870	const_iv (MAP_NONBLOCK)
		871
		872	const_eio (MCL_FUTURE)
		873	const_eio (MCL_CURRENT)
		874
		875	const_eio (MS_ASYNC)
		876	const_eio (MS_INVALIDATE)
		877	const_eio (MS_SYNC)
		878
		879	const_eio (MT_MODIFY)
		880
		881	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		882	const_eio (SYNC_FILE_RANGE_WRITE)
		883	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		884
		885	const_eio (FALLOC_FL_KEEP_SIZE)
		886
		887	const_eio (READDIR_DENTS)
		888	const_eio (READDIR_DIRS_FIRST)
		889	const_eio (READDIR_STAT_ORDER)
		890	const_eio (READDIR_FOUND_UNKNOWN)
		891
		892	const_eio (DT_UNKNOWN)
		893	const_eio (DT_FIFO)
		894	const_eio (DT_CHR)
		895	const_eio (DT_DIR)
		896	const_eio (DT_BLK)
		897	const_eio (DT_REG)
		898	const_eio (DT_LNK)
		899	const_eio (DT_SOCK)
		900	const_eio (DT_WHT)
		901	};
		902
1331	HV *stash = gv_stashpv ("IO::AIO", 1);	903	aio_stash = gv_stashpv ("IO::AIO" , 1);
		904	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		905	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1332		906
1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	907	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	908	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1340		909
		910	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		911
1341	create_pipe ();	912	create_respipe ();
1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1343	}
1344		913
		914	if (eio_init (want_poll, done_poll) < 0)
		915	croak ("IO::AIO: unable to initialise eio library");
		916
		917	/* atfork child called in fifo order, so before eio's handler */
		918	X_THREAD_ATFORK (0, 0, atfork_child);
		919	}
		920
1345	void	921	void
1346	max_poll_reqs (int nreqs)	922	max_poll_reqs (unsigned int nreqs)
1347	PROTOTYPE: $	923	PROTOTYPE: $
1348	CODE:	924	CODE:
1349	max_poll_reqs = nreqs;	925	eio_set_max_poll_reqs (nreqs);
1350		926
1351	void	927	void
1352	max_poll_time (double nseconds)	928	max_poll_time (double nseconds)
1353	PROTOTYPE: $	929	PROTOTYPE: $
1354	CODE:	930	CODE:
1355	max_poll_time = nseconds * AIO_TICKS;	931	eio_set_max_poll_time (nseconds);
1356		932
1357	void	933	void
1358	min_parallel (int nthreads)	934	min_parallel (unsigned int nthreads)
1359	PROTOTYPE: $
1360
1361	void
1362	max_parallel (int nthreads)
1363	PROTOTYPE: $
1364
1365	void
1366	max_idle (int nthreads)
1367	PROTOTYPE: $	935	PROTOTYPE: $
1368	CODE:	936	CODE:
1369	set_max_idle (nthreads);	937	eio_set_min_parallel (nthreads);
1370		938
1371	int	939	void
1372	max_outstanding (int maxreqs)	940	max_parallel (unsigned int nthreads)
1373	PROTOTYPE: $	941	PROTOTYPE: $
1374	CODE:	942	CODE:
1375	RETVAL = max_outstanding;	943	eio_set_max_parallel (nthreads);
		944
		945	void
		946	max_idle (unsigned int nthreads)
		947	PROTOTYPE: $
		948	CODE:
		949	eio_set_max_idle (nthreads);
		950
		951	void
		952	idle_timeout (unsigned int seconds)
		953	PROTOTYPE: $
		954	CODE:
		955	eio_set_idle_timeout (seconds);
		956
		957	void
		958	max_outstanding (unsigned int maxreqs)
		959	PROTOTYPE: $
		960	CODE:
1376	max_outstanding = maxreqs;	961	max_outstanding = maxreqs;
1377	OUTPUT:
1378	RETVAL
1379		962
1380	void	963	void
1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	964	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1382	PROTOTYPE: $$$;$
1383	PPCODE:	965	PPCODE:
1384	{	966	{
1385	dREQ;	967	dREQ;
1386		968
1387	req->type = REQ_OPEN;	969	req->type = EIO_OPEN;
1388	req->sv1 = newSVsv (pathname);	970	req->sv1 = newSVsv (pathname);
1389	req->ptr1 = SvPVbyte_nolen (req->sv1);	971	req->ptr1 = SvPVbyte_nolen (req->sv1);
1390	req->int1 = flags;	972	req->int1 = flags;
1391	req->mode = mode;	973	req->int2 = mode;
1392		974
1393	REQ_SEND;	975	REQ_SEND;
1394	}	976	}
1395		977
1396	void	978	void
1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)	979	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1398	PROTOTYPE: $;$
1399	ALIAS:	980	ALIAS:
1400	aio_close = REQ_CLOSE
1401	aio_fsync = REQ_FSYNC	981	aio_fsync = EIO_FSYNC
1402	aio_fdatasync = REQ_FDATASYNC	982	aio_fdatasync = EIO_FDATASYNC
1403	PPCODE:	983	PPCODE:
1404	{	984	{
		985	int fd = s_fileno_croak (fh, 0);
1405	dREQ;	986	dREQ;
1406		987
1407	req->type = ix;	988	req->type = ix;
1408	req->sv1 = newSVsv (fh);	989	req->sv1 = newSVsv (fh);
1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	990	req->int1 = fd;
1410		991
1411	REQ_SEND (req);	992	REQ_SEND (req);
1412	}	993	}
1413		994
1414	void	995	void
		996	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		997	PPCODE:
		998	{
		999	int fd = s_fileno_croak (fh, 0);
		1000	dREQ;
		1001
		1002	req->type = EIO_SYNC_FILE_RANGE;
		1003	req->sv1 = newSVsv (fh);
		1004	req->int1 = fd;
		1005	req->offs = offset;
		1006	req->size = nbytes;
		1007	req->int2 = flags;
		1008
		1009	REQ_SEND (req);
		1010	}
		1011
		1012	void
		1013	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1014	PPCODE:
		1015	{
		1016	int fd = s_fileno_croak (fh, 0);
		1017	dREQ;
		1018
		1019	req->type = EIO_FALLOCATE;
		1020	req->sv1 = newSVsv (fh);
		1021	req->int1 = fd;
		1022	req->int2 = mode;
		1023	req->offs = offset;
		1024	req->size = len;
		1025
		1026	REQ_SEND (req);
		1027	}
		1028
		1029	void
		1030	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1031	PPCODE:
		1032	{
		1033	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1034	int fd = s_fileno_croak (fh, 0);
		1035	dREQ;
		1036
		1037	if (close_pipe < 0)
		1038	{
		1039	int pipefd [2];
		1040
		1041	if (pipe (pipefd) < 0
		1042	|| close (pipefd [1]) < 0
		1043	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1044	abort (); /*D*/
		1045
		1046	close_pipe = pipefd [0];
		1047	}
		1048
		1049	req->type = EIO_DUP2;
		1050	req->int1 = close_pipe;
		1051	req->sv2 = newSVsv (fh);
		1052	req->int2 = fd;
		1053
		1054	REQ_SEND (req);
		1055	}
		1056
		1057	void
1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)	1058	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1416	ALIAS:	1059	ALIAS:
1417	aio_read = REQ_READ	1060	aio_read = EIO_READ
1418	aio_write = REQ_WRITE	1061	aio_write = EIO_WRITE
1419	PROTOTYPE: $$$$$;$
1420	PPCODE:	1062	PPCODE:
1421	{	1063	{
1422	STRLEN svlen;	1064	STRLEN svlen;
		1065	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1423	char *svptr = SvPVbyte (data, svlen);	1066	char *svptr = SvPVbyte (data, svlen);
1424		1067	UV len = SvUV (length);
1425	SvUPGRADE (data, SVt_PV);
1426	SvPOK_on (data);
1427		1068
1428	if (dataoffset < 0)	1069	if (dataoffset < 0)
1429	dataoffset += svlen;	1070	dataoffset += svlen;
1430		1071
1431	if (dataoffset < 0 || dataoffset > svlen)	1072	if (dataoffset < 0 || dataoffset > svlen)
1432	croak ("data offset outside of string");	1073	croak ("dataoffset outside of data scalar");
1433		1074
1434	if (ix == REQ_WRITE)	1075	if (ix == EIO_WRITE)
1435	{	1076	{
1436	/* write: check length and adjust. */	1077	/* write: check length and adjust. */
1437	if (length < 0 || length + dataoffset > svlen)	1078	if (!SvOK (length) || len + dataoffset > svlen)
1438	length = svlen - dataoffset;	1079	len = svlen - dataoffset;
1439	}	1080	}
1440	else	1081	else
1441	{	1082	{
1442	/* read: grow scalar as necessary */	1083	/* read: check type and grow scalar as necessary */
		1084	SvUPGRADE (data, SVt_PV);
1443	svptr = SvGROW (data, length + dataoffset + 1);	1085	svptr = SvGROW (data, len + dataoffset + 1);
1444	}	1086	}
1445
1446	if (length < 0)
1447	croak ("length must not be negative");
1448		1087
1449	{	1088	{
1450	dREQ;	1089	dREQ;
1451		1090
1452	req->type = ix;	1091	req->type = ix;
1453	req->sv1 = newSVsv (fh);	1092	req->sv1 = newSVsv (fh);
1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1093	req->int1 = fd;
1455	: IoOFP (sv_2io (fh)));	1094	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1456	req->offs = offset;
1457	req->size = length;	1095	req->size = len;
1458	req->sv2 = SvREFCNT_inc (data);	1096	req->sv2 = SvREFCNT_inc (data);
1459	req->ptr1 = (char *)svptr + dataoffset;	1097	req->ptr2 = (char *)svptr + dataoffset;
1460	req->stroffset = dataoffset;	1098	req->stroffset = dataoffset;
1461		1099
1462	if (!SvREADONLY (data))	1100	if (!SvREADONLY (data))
1463	{	1101	{
1464	SvREADONLY_on (data);	1102	SvREADONLY_on (data);
…		…
1469	}	1107	}
1470	}	1108	}
1471		1109
1472	void	1110	void
1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1111	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1474	PROTOTYPE: $$;$	1112	ALIAS:
		1113	aio_readlink = EIO_READLINK
		1114	aio_realpath = EIO_REALPATH
1475	PPCODE:	1115	PPCODE:
1476	{	1116	{
1477	SV *data;	1117	SV *data;
1478	dREQ;	1118	dREQ;
1479		1119
1480	data = newSV (NAME_MAX);
1481	SvPOK_on (data);
1482
1483	req->type = REQ_READLINK;	1120	req->type = ix;
1484	req->sv1 = newSVsv (path);	1121	req->sv1 = newSVsv (path);
1485	req->ptr2 = SvPVbyte_nolen (req->sv1);	1122	req->ptr1 = SvPVbyte_nolen (req->sv1);
1486	req->sv2 = data;
1487	req->ptr1 = SvPVbyte_nolen (data);
1488		1123
1489	REQ_SEND;	1124	REQ_SEND;
1490	}	1125	}
1491		1126
1492	void	1127	void
1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)	1128	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1494	PROTOTYPE: $$$$;$
1495	PPCODE:	1129	PPCODE:
1496	{	1130	{
		1131	int ifd = s_fileno_croak (in_fh , 0);
		1132	int ofd = s_fileno_croak (out_fh, 1);
1497	dREQ;	1133	dREQ;
1498		1134
1499	req->type = REQ_SENDFILE;	1135	req->type = EIO_SENDFILE;
1500	req->sv1 = newSVsv (out_fh);	1136	req->sv1 = newSVsv (out_fh);
1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1137	req->int1 = ofd;
1502	req->sv2 = newSVsv (in_fh);	1138	req->sv2 = newSVsv (in_fh);
1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1139	req->int2 = ifd;
1504	req->offs = in_offset;	1140	req->offs = in_offset;
1505	req->size = length;	1141	req->size = length;
1506		1142
1507	REQ_SEND;	1143	REQ_SEND;
1508	}	1144	}
1509		1145
1510	void	1146	void
1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)	1147	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1512	PROTOTYPE: $$$;$
1513	PPCODE:	1148	PPCODE:
1514	{	1149	{
		1150	int fd = s_fileno_croak (fh, 0);
1515	dREQ;	1151	dREQ;
1516		1152
1517	req->type = REQ_READAHEAD;	1153	req->type = EIO_READAHEAD;
1518	req->sv1 = newSVsv (fh);	1154	req->sv1 = newSVsv (fh);
1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1155	req->int1 = fd;
1520	req->offs = offset;	1156	req->offs = offset;
1521	req->size = length;	1157	req->size = length;
1522		1158
1523	REQ_SEND;	1159	REQ_SEND;
1524	}	1160	}
1525		1161
1526	void	1162	void
1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1163	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1528	ALIAS:	1164	ALIAS:
1529	aio_stat = REQ_STAT	1165	aio_stat = EIO_STAT
1530	aio_lstat = REQ_LSTAT	1166	aio_lstat = EIO_LSTAT
		1167	aio_statvfs = EIO_STATVFS
1531	PPCODE:	1168	PPCODE:
1532	{	1169	{
1533	dREQ;	1170	dREQ;
1534		1171
1535	req->ptr2 = malloc (sizeof (Stat_t));
1536	if (!req->ptr2)
1537	{
1538	req_free (req);
1539	croak ("out of memory during aio_stat statdata allocation");
1540	}
1541
1542	req->flags |= FLAG_PTR2_FREE;
1543	req->sv1 = newSVsv (fh_or_path);	1172	req->sv1 = newSVsv (fh_or_path);
1544		1173
1545	if (SvPOK (fh_or_path))	1174	if (SvPOK (req->sv1))
1546	{	1175	{
1547	req->type = ix;	1176	req->type = ix;
1548	req->ptr1 = SvPVbyte_nolen (req->sv1);	1177	req->ptr1 = SvPVbyte_nolen (req->sv1);
1549	}	1178	}
1550	else	1179	else
1551	{	1180	{
1552	req->type = REQ_FSTAT;	1181	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1182	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1554	}	1183	}
1555		1184
1556	REQ_SEND;	1185	REQ_SEND;
1557	}	1186	}
		1187
		1188	UV
		1189	major (UV dev)
		1190	ALIAS:
		1191	minor = 1
		1192	CODE:
		1193	RETVAL = ix ? major (dev) : minor (dev);
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	UV
		1198	makedev (UV maj, UV min)
		1199	CODE:
		1200	RETVAL = makedev (maj, min);
		1201	OUTPUT:
		1202	RETVAL
1558		1203
1559	void	1204	void
1560	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1205	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1561	PPCODE:	1206	PPCODE:
1562	{	1207	{
…		…
1564		1209
1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1210	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1211	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1567	req->sv1 = newSVsv (fh_or_path);	1212	req->sv1 = newSVsv (fh_or_path);
1568		1213
1569	if (SvPOK (fh_or_path))	1214	if (SvPOK (req->sv1))
1570	{	1215	{
1571	req->type = REQ_UTIME;	1216	req->type = EIO_UTIME;
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1217	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	}	1218	}
1574	else	1219	else
1575	{	1220	{
1576	req->type = REQ_FUTIME;	1221	req->type = EIO_FUTIME;
1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1222	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1578	}	1223	}
1579		1224
1580	REQ_SEND;	1225	REQ_SEND;
1581	}	1226	}
1582		1227
1583	void	1228	void
1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1229	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
1585	PPCODE:	1230	PPCODE:
1586	{	1231	{
1587	dREQ;	1232	dREQ;
1588		1233
1589	req->mode = mode;
1590	req->sv1 = newSVsv (fh_or_path);	1234	req->sv1 = newSVsv (fh_or_path);
		1235	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1591		1236
1592	if (SvPOK (fh_or_path))	1237	if (SvPOK (req->sv1))
1593	{	1238	{
1594	req->type = REQ_CHMOD;	1239	req->type = EIO_TRUNCATE;
1595	req->ptr1 = SvPVbyte_nolen (req->sv1);	1240	req->ptr1 = SvPVbyte_nolen (req->sv1);
1596	}	1241	}
1597	else	1242	else
1598	{	1243	{
1599	req->type = REQ_FCHMOD;	1244	req->type = EIO_FTRUNCATE;
1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1245	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1601	}	1246	}
1602		1247
1603	REQ_SEND;	1248	REQ_SEND;
1604	}	1249	}
1605		1250
1606	void	1251	void
1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1252	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1253	ALIAS:
		1254	aio_chmod = EIO_CHMOD
		1255	aio_mkdir = EIO_MKDIR
1608	PPCODE:	1256	PPCODE:
1609	{	1257	{
1610	dREQ;	1258	dREQ;
1611		1259
1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1260	req->int2 = mode;
1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1614	req->sv1 = newSVsv (fh_or_path);	1261	req->sv1 = newSVsv (fh_or_path);
1615		1262
1616	if (SvPOK (fh_or_path))	1263	if (SvPOK (req->sv1))
1617	{	1264	{
1618	req->type = REQ_CHOWN;	1265	req->type = ix;
1619	req->ptr1 = SvPVbyte_nolen (req->sv1);	1266	req->ptr1 = SvPVbyte_nolen (req->sv1);
1620	}	1267	}
1621	else	1268	else
1622	{	1269	{
1623	req->type = REQ_FCHOWN;	1270	req->type = EIO_FCHMOD;
1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1271	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1625	}	1272	}
1626		1273
1627	REQ_SEND;	1274	REQ_SEND;
1628	}	1275	}
1629		1276
1630	void	1277	void
		1278	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1279	PPCODE:
		1280	{
		1281	dREQ;
		1282
		1283	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1284	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1285	req->sv1 = newSVsv (fh_or_path);
		1286
		1287	if (SvPOK (req->sv1))
		1288	{
		1289	req->type = EIO_CHOWN;
		1290	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1291	}
		1292	else
		1293	{
		1294	req->type = EIO_FCHOWN;
		1295	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1296	}
		1297
		1298	REQ_SEND;
		1299	}
		1300
		1301	void
		1302	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1303	PPCODE:
		1304	{
		1305	dREQ;
		1306
		1307	req->type = EIO_READDIR;
		1308	req->sv1 = newSVsv (pathname);
		1309	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1310	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1311
		1312	if (flags & EIO_READDIR_DENTS)
		1313	req->int1 |= EIO_READDIR_CUSTOM2;
		1314
		1315	REQ_SEND;
		1316	}
		1317
		1318	void
1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1319	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1632	ALIAS:	1320	ALIAS:
1633	aio_unlink = REQ_UNLINK	1321	aio_unlink = EIO_UNLINK
1634	aio_rmdir = REQ_RMDIR	1322	aio_rmdir = EIO_RMDIR
1635	aio_readdir = REQ_READDIR	1323	aio_readdir = EIO_READDIR
1636	PPCODE:	1324	PPCODE:
1637	{	1325	{
1638	dREQ;	1326	dREQ;
1639		1327
1640	req->type = ix;	1328	req->type = ix;
…		…
1643		1331
1644	REQ_SEND;	1332	REQ_SEND;
1645	}	1333	}
1646		1334
1647	void	1335	void
1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1649	PPCODE:
1650	{
1651	dREQ;
1652
1653	req->type = REQ_MKDIR;
1654	req->sv1 = newSVsv (pathname);
1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
1656	req->mode = mode;
1657
1658	REQ_SEND;
1659	}
1660
1661	void
1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1336	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1663	ALIAS:	1337	ALIAS:
1664	aio_link = REQ_LINK	1338	aio_link = EIO_LINK
1665	aio_symlink = REQ_SYMLINK	1339	aio_symlink = EIO_SYMLINK
1666	aio_rename = REQ_RENAME	1340	aio_rename = EIO_RENAME
1667	PPCODE:	1341	PPCODE:
1668	{	1342	{
1669	dREQ;	1343	dREQ;
1670		1344
1671	req->type = ix;	1345	req->type = ix;
1672	req->sv2 = newSVsv (oldpath);	1346	req->sv1 = newSVsv (oldpath);
		1347	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1348	req->sv2 = newSVsv (newpath);
1673	req->ptr2 = SvPVbyte_nolen (req->sv2);	1349	req->ptr2 = SvPVbyte_nolen (req->sv2);
1674	req->sv1 = newSVsv (newpath);
1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1676		1350
1677	REQ_SEND;	1351	REQ_SEND;
1678	}	1352	}
1679		1353
1680	void	1354	void
1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1355	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1682	PPCODE:	1356	PPCODE:
1683	{	1357	{
1684	dREQ;	1358	dREQ;
1685		1359
1686	req->type = REQ_MKNOD;	1360	req->type = EIO_MKNOD;
1687	req->sv1 = newSVsv (pathname);	1361	req->sv1 = newSVsv (pathname);
1688	req->ptr1 = SvPVbyte_nolen (req->sv1);	1362	req->ptr1 = SvPVbyte_nolen (req->sv1);
1689	req->mode = (mode_t)mode;	1363	req->int2 = (mode_t)mode;
1690	req->offs = dev;	1364	req->offs = dev;
1691		1365
1692	REQ_SEND;	1366	REQ_SEND;
1693	}	1367	}
1694		1368
1695	void	1369	void
		1370	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1371	ALIAS:
		1372	aio_mtouch = EIO_MTOUCH
		1373	aio_msync = EIO_MSYNC
		1374	PPCODE:
		1375	{
		1376	STRLEN svlen;
		1377	char *svptr = SvPVbyte (data, svlen);
		1378	UV len = SvUV (length);
		1379
		1380	if (offset < 0)
		1381	offset += svlen;
		1382
		1383	if (offset < 0 || offset > svlen)
		1384	croak ("offset outside of scalar");
		1385
		1386	if (!SvOK (length) || len + offset > svlen)
		1387	len = svlen - offset;
		1388
		1389	{
		1390	dREQ;
		1391
		1392	req->type = ix;
		1393	req->sv2 = SvREFCNT_inc (data);
		1394	req->ptr2 = (char *)svptr + offset;
		1395	req->size = len;
		1396	req->int1 = flags;
		1397
		1398	REQ_SEND;
		1399	}
		1400	}
		1401
		1402	void
		1403	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1404	PPCODE:
		1405	{
		1406	STRLEN svlen;
		1407	char *svptr = SvPVbyte (data, svlen);
		1408	UV len = SvUV (length);
		1409
		1410	if (offset < 0)
		1411	offset += svlen;
		1412
		1413	if (offset < 0 || offset > svlen)
		1414	croak ("offset outside of scalar");
		1415
		1416	if (!SvOK (length) || len + offset > svlen)
		1417	len = svlen - offset;
		1418
		1419	{
		1420	dREQ;
		1421
		1422	req->type = EIO_MLOCK;
		1423	req->sv2 = SvREFCNT_inc (data);
		1424	req->ptr2 = (char *)svptr + offset;
		1425	req->size = len;
		1426
		1427	REQ_SEND;
		1428	}
		1429	}
		1430
		1431	void
		1432	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1433	PPCODE:
		1434	{
		1435	dREQ;
		1436
		1437	req->type = EIO_MLOCKALL;
		1438	req->int1 = flags;
		1439
		1440	REQ_SEND;
		1441	}
		1442
		1443	void
1696	aio_busy (double delay, SV *callback=&PL_sv_undef)	1444	aio_busy (double delay, SV *callback=&PL_sv_undef)
1697	PPCODE:	1445	PPCODE:
1698	{	1446	{
1699	dREQ;	1447	dREQ;
1700		1448
1701	req->type = REQ_BUSY;	1449	req->type = EIO_BUSY;
1702	req->nv1 = delay < 0. ? 0. : delay;	1450	req->nv1 = delay < 0. ? 0. : delay;
1703		1451
1704	REQ_SEND;	1452	REQ_SEND;
1705	}	1453	}
1706		1454
1707	void	1455	void
1708	aio_group (SV *callback=&PL_sv_undef)	1456	aio_group (SV *callback=&PL_sv_undef)
1709	PROTOTYPE: ;$
1710	PPCODE:	1457	PPCODE:
1711	{	1458	{
1712	dREQ;	1459	dREQ;
1713		1460
1714	req->type = REQ_GROUP;	1461	req->type = EIO_GROUP;
1715		1462
1716	req_send (req);	1463	req_submit (req);
1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1464	XPUSHs (req_sv (req, aio_grp_stash));
1718	}	1465	}
1719		1466
1720	void	1467	void
1721	aio_nop (SV *callback=&PL_sv_undef)	1468	aio_nop (SV *callback=&PL_sv_undef)
		1469	ALIAS:
		1470	aio_nop = EIO_NOP
		1471	aio_sync = EIO_SYNC
1722	PPCODE:	1472	PPCODE:
1723	{	1473	{
1724	dREQ;	1474	dREQ;
1725		1475
1726	req->type = REQ_NOP;	1476	req->type = ix;
1727		1477
1728	REQ_SEND;	1478	REQ_SEND;
1729	}	1479	}
1730		1480
1731	int	1481	int
1732	aioreq_pri (int pri = 0)	1482	aioreq_pri (int pri = 0)
1733	PROTOTYPE: ;$
1734	CODE:	1483	CODE:
1735	RETVAL = next_pri - PRI_BIAS;	1484	RETVAL = next_pri;
1736	if (items > 0)	1485	if (items > 0)
1737	{	1486	{
1738	if (pri < PRI_MIN) pri = PRI_MIN;	1487	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1739	if (pri > PRI_MAX) pri = PRI_MAX;	1488	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1740	next_pri = pri + PRI_BIAS;	1489	next_pri = pri;
1741	}	1490	}
1742	OUTPUT:	1491	OUTPUT:
1743	RETVAL	1492	RETVAL
1744		1493
1745	void	1494	void
1746	aioreq_nice (int nice = 0)	1495	aioreq_nice (int nice = 0)
1747	CODE:	1496	CODE:
1748	nice = next_pri - nice;	1497	nice = next_pri - nice;
1749	if (nice < PRI_MIN) nice = PRI_MIN;	1498	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1750	if (nice > PRI_MAX) nice = PRI_MAX;	1499	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1751	next_pri = nice + PRI_BIAS;	1500	next_pri = nice;
1752		1501
1753	void	1502	void
1754	flush ()	1503	flush ()
1755	PROTOTYPE:
1756	CODE:	1504	CODE:
1757	while (nreqs)	1505	while (eio_nreqs ())
1758	{	1506	{
1759	poll_wait ();	1507	poll_wait ();
1760	poll_cb ();	1508	poll_cb ();
1761	}	1509	}
1762		1510
1763	int	1511	int
1764	poll()	1512	poll ()
1765	PROTOTYPE:
1766	CODE:	1513	CODE:
1767	poll_wait ();	1514	poll_wait ();
1768	RETVAL = poll_cb ();	1515	RETVAL = poll_cb ();
1769	OUTPUT:	1516	OUTPUT:
1770	RETVAL	1517	RETVAL
1771		1518
1772	int	1519	int
1773	poll_fileno()	1520	poll_fileno ()
1774	PROTOTYPE:
1775	CODE:	1521	CODE:
1776	RETVAL = respipe [0];	1522	RETVAL = s_epipe_fd (&respipe);
1777	OUTPUT:	1523	OUTPUT:
1778	RETVAL	1524	RETVAL
1779		1525
1780	int	1526	int
1781	poll_cb(...)	1527	poll_cb (...)
1782	PROTOTYPE:	1528	PROTOTYPE:
1783	CODE:	1529	CODE:
1784	RETVAL = poll_cb ();	1530	RETVAL = poll_cb ();
1785	OUTPUT:	1531	OUTPUT:
1786	RETVAL	1532	RETVAL
1787		1533
1788	void	1534	void
1789	poll_wait()	1535	poll_wait ()
1790	PROTOTYPE:
1791	CODE:	1536	CODE:
1792	poll_wait ();	1537	poll_wait ();
1793		1538
1794	void
1795	setsig (int signum = SIGIO)
1796	PROTOTYPE: ;$
1797	CODE:
1798	{
1799	if (block_sig_level)
1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1801
1802	LOCK (reslock);
1803	main_tid = pthread_self ();
1804	main_sig = signum;
1805	UNLOCK (reslock);
1806
1807	if (main_sig && npending)
1808	pthread_kill (main_tid, main_sig);
1809	}
1810
1811	void
1812	aio_block (SV *cb)
1813	PROTOTYPE: &
1814	PPCODE:
1815	{
1816	int count;
1817
1818	block_sig ();
1819	PUSHMARK (SP);
1820	PUTBACK;
1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1822	SPAGAIN;
1823	unblock_sig ();
1824
1825	if (SvTRUE (ERRSV))
1826	croak (0);
1827
1828	XSRETURN (count);
1829	}
1830
1831	int	1539	int
1832	nreqs()	1540	nreqs ()
1833	PROTOTYPE:
1834	CODE:	1541	CODE:
1835	RETVAL = nreqs;	1542	RETVAL = eio_nreqs ();
1836	OUTPUT:	1543	OUTPUT:
1837	RETVAL	1544	RETVAL
1838		1545
1839	int	1546	int
1840	nready()	1547	nready ()
1841	PROTOTYPE:
1842	CODE:	1548	CODE:
1843	RETVAL = get_nready ();	1549	RETVAL = eio_nready ();
1844	OUTPUT:	1550	OUTPUT:
1845	RETVAL	1551	RETVAL
1846		1552
1847	int	1553	int
1848	npending()	1554	npending ()
1849	PROTOTYPE:
1850	CODE:	1555	CODE:
1851	RETVAL = get_npending ();	1556	RETVAL = eio_npending ();
1852	OUTPUT:	1557	OUTPUT:
1853	RETVAL	1558	RETVAL
1854		1559
1855	int	1560	int
1856	nthreads()	1561	nthreads ()
1857	PROTOTYPE:
1858	CODE:	1562	CODE:
1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1563	RETVAL = eio_nthreads ();
1860	RETVAL = started;
1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1862	OUTPUT:	1564	OUTPUT:
1863	RETVAL	1565	RETVAL
1864		1566
		1567	int
		1568	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1569	CODE:
		1570	RETVAL = posix_fadvise (fh, offset, length, advice);
		1571	OUTPUT:
		1572	RETVAL
		1573
		1574	ssize_t
		1575	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1576	CODE:
		1577	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1578	OUTPUT:
		1579	RETVAL
		1580
		1581	void
		1582	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1583	PPCODE:
		1584	sv_unmagic (scalar, MMAP_MAGIC);
		1585	{
		1586	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1587	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1588	if (addr == (void *)-1)
		1589	XSRETURN_NO;
		1590
		1591	sv_force_normal (scalar);
		1592
		1593	/* we store the length in mg_obj, as namlen is I32 :/ */
		1594	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1595	->mg_obj = (SV *)length;
		1596
		1597	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1598
		1599	if (!(prot & PROT_WRITE))
		1600	SvREADONLY_on (scalar);
		1601
		1602	if (SvLEN (scalar))
		1603	Safefree (SvPVX (scalar));
		1604
		1605	SvPVX (scalar) = (char *)addr;
		1606	SvCUR_set (scalar, length);
		1607	SvLEN_set (scalar, 0);
		1608	SvPOK_only (scalar);
		1609
		1610	XSRETURN_YES;
		1611	}
		1612
		1613	void
		1614	munmap (SV *scalar)
		1615	CODE:
		1616	sv_unmagic (scalar, MMAP_MAGIC);
		1617
		1618	int
		1619	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1620	ALIAS:
		1621	mprotect = 1
		1622	CODE:
		1623	{
		1624	STRLEN svlen;
		1625	void *addr = SvPVbyte (scalar, svlen);
		1626	size_t len = SvUV (length);
		1627
		1628	if (offset < 0)
		1629	offset += svlen;
		1630
		1631	if (offset < 0 || offset > svlen)
		1632	croak ("offset outside of scalar");
		1633
		1634	if (!SvOK (length) || len + offset > svlen)
		1635	len = svlen - offset;
		1636
		1637	addr = (void *)(((intptr_t)addr) + offset);
		1638	eio_page_align (&addr, &len);
		1639
		1640	switch (ix)
		1641	{
		1642	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1643	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1644	}
		1645	}
		1646	OUTPUT:
		1647	RETVAL
		1648
		1649	int
		1650	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1651	CODE:
		1652	{
		1653	STRLEN svlen;
		1654	void *addr = SvPVbyte (scalar, svlen);
		1655	size_t len = SvUV (length);
		1656
		1657	if (offset < 0)
		1658	offset += svlen;
		1659
		1660	if (offset < 0 || offset > svlen)
		1661	croak ("offset outside of scalar");
		1662
		1663	if (!SvOK (length) || len + offset > svlen)
		1664	len = svlen - offset;
		1665
		1666	addr = (void *)(((intptr_t)addr) + offset);
		1667	eio_page_align (&addr, &len);
		1668	#if _POSIX_MEMLOCK_RANGE
		1669	RETVAL = munlock (addr, len);
		1670	#else
		1671	RETVAL = ((errno = ENOSYS), -1);
		1672	#endif
		1673	}
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	int
		1678	munlockall ()
		1679	CODE:
		1680	#if _POSIX_MEMLOCK
		1681	munlockall ();
		1682	#else
		1683	RETVAL = -1;
		1684	errno = ENOSYS;
		1685	#endif
		1686	OUTPUT:
		1687	RETVAL
		1688
		1689	void _on_next_submit (SV *cb)
		1690	CODE:
		1691	SvREFCNT_dec (on_next_submit);
		1692	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1693
1865	PROTOTYPES: DISABLE	1694	PROTOTYPES: DISABLE
1866		1695
1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1696	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1868		1697
1869	void	1698	void
1870	cancel (aio_req_ornot req)	1699	cancel (aio_req_ornot req)
1871	CODE:	1700	CODE:
1872	req_cancel (req);	1701	eio_cancel (req);
1873		1702
1874	void	1703	void
1875	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1704	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1876	CODE:	1705	PPCODE:
		1706	{
		1707	if (GIMME_V != G_VOID)
		1708	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1709
		1710	if (items > 1)
		1711	{
		1712	SV *cb_cv =get_cb (callback);
		1713
1877	SvREFCNT_dec (req->callback);	1714	SvREFCNT_dec (req->callback);
1878	req->callback = newSVsv (callback);	1715	req->callback = SvREFCNT_inc (cb_cv);
		1716	}
		1717	}
1879		1718
1880	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1719	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1881		1720
1882	void	1721	void
1883	add (aio_req grp, ...)	1722	add (aio_req grp, ...)
1884	PPCODE:	1723	PPCODE:
1885	{	1724	{
1886	int i;	1725	int i;
1887	aio_req req;
1888
1889	if (main_sig && !block_sig_level)
1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1891		1726
1892	if (grp->int1 == 2)	1727	if (grp->int1 == 2)
1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1728	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1894		1729
1895	for (i = 1; i < items; ++i )	1730	for (i = 1; i < items; ++i )
1896	{	1731	{
		1732	aio_req req;
		1733
1897	if (GIMME_V != G_VOID)	1734	if (GIMME_V != G_VOID)
1898	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1735	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1899		1736
1900	req = SvAIO_REQ (ST (i));	1737	req = SvAIO_REQ (ST (i));
1901		1738
1902	if (req)	1739	if (req)
1903	{	1740	eio_grp_add (grp, req);
1904	++grp->size;
1905	req->grp = grp;
1906
1907	req->grp_prev = 0;
1908	req->grp_next = grp->grp_first;
1909
1910	if (grp->grp_first)
1911	grp->grp_first->grp_prev = req;
1912
1913	grp->grp_first = req;
1914	}
1915	}	1741	}
1916	}	1742	}
1917		1743
1918	void	1744	void
1919	cancel_subs (aio_req_ornot req)	1745	cancel_subs (aio_req_ornot req)
…		…
1928	AV *av;	1754	AV *av;
1929		1755
1930	grp->errorno = errno;	1756	grp->errorno = errno;
1931		1757
1932	av = newAV ();	1758	av = newAV ();
		1759	av_extend (av, items - 1);
1933		1760
1934	for (i = 1; i < items; ++i )	1761	for (i = 1; i < items; ++i )
1935	av_push (av, newSVsv (ST (i)));	1762	av_push (av, newSVsv (ST (i)));
1936		1763
1937	SvREFCNT_dec (grp->sv1);	1764	SvREFCNT_dec (grp->sv1);
…		…
1944	grp->errorno = errorno;	1771	grp->errorno = errorno;
1945		1772
1946	void	1773	void
1947	limit (aio_req grp, int limit)	1774	limit (aio_req grp, int limit)
1948	CODE:	1775	CODE:
1949	grp->int2 = limit;	1776	eio_grp_limit (grp, limit);
1950	aio_grp_feed (grp);
1951		1777
1952	void	1778	void
1953	feed (aio_req grp, SV *callback=&PL_sv_undef)	1779	feed (aio_req grp, SV *callback=&PL_sv_undef)
1954	CODE:	1780	CODE:
1955	{	1781	{
1956	SvREFCNT_dec (grp->sv2);	1782	SvREFCNT_dec (grp->sv2);
1957	grp->sv2 = newSVsv (callback);	1783	grp->sv2 = newSVsv (callback);
		1784	grp->feed = aio_grp_feed;
1958		1785
1959	if (grp->int2 <= 0)	1786	if (grp->int2 <= 0)
1960	grp->int2 = 2;	1787	grp->int2 = 2;
1961		1788
1962	aio_grp_feed (grp);	1789	eio_grp_limit (grp, grp->int2);
1963	}	1790	}
1964		1791

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